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linux/drivers/gpu/drm/i915/intel_display.c
Chris Wilson 98a2f41167 drm/i915: Allow disabling error capture 
We currently capture the GPU state after we detect a hang. This is vital
for us to both triage and debug hangs in the wild (post-mortem
debugging). However, it comes at the cost of running some potentially
dangerous code (since it has to make very few assumption about the state
of the driver) that is quite resource intensive.

This patch introduces both a method to disable error capture at runtime
(for users who hit bugs at runtime and need a workaround) and to disable
error capture at compiletime (for realtime users who want to minimise
any possible latency, and never require error capture, saving ~30k of
code). The cost is that we now have to be wary of (and test!) a kconfig
flag and a module parameter. The effect of the module parameter is easy
to verify through code inspection and runtime testing, but a kconfig flag
needs regular compile checking.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Acked-by: Jani Nikula <jani.nikula@linux.intel.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch
Link: http://patchwork.freedesktop.org/patch/msgid/20161012090522.367-2-chris@chris-wilson.co.uk
2016-10-12 12:00:32 +01:00

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/*
* Copyright © 2006-2007 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Authors:
* Eric Anholt <eric@anholt.net>
*/
#include <linux/dmi.h>
#include <linux/module.h>
#include <linux/input.h>
#include <linux/i2c.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/vgaarb.h>
#include <drm/drm_edid.h>
#include <drm/drmP.h>
#include "intel_drv.h"
#include "intel_frontbuffer.h"
#include <drm/i915_drm.h>
#include "i915_drv.h"
#include "i915_gem_dmabuf.h"
#include "intel_dsi.h"
#include "i915_trace.h"
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_dp_helper.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_plane_helper.h>
#include <drm/drm_rect.h>
#include <linux/dma_remapping.h>
#include <linux/reservation.h>
static bool is_mmio_work(struct intel_flip_work *work)
{
return work->mmio_work.func;
}
/* Primary plane formats for gen <= 3 */
static const uint32_t i8xx_primary_formats[] = {
DRM_FORMAT_C8,
DRM_FORMAT_RGB565,
DRM_FORMAT_XRGB1555,
DRM_FORMAT_XRGB8888,
};
/* Primary plane formats for gen >= 4 */
static const uint32_t i965_primary_formats[] = {
DRM_FORMAT_C8,
DRM_FORMAT_RGB565,
DRM_FORMAT_XRGB8888,
DRM_FORMAT_XBGR8888,
DRM_FORMAT_XRGB2101010,
DRM_FORMAT_XBGR2101010,
};
static const uint32_t skl_primary_formats[] = {
DRM_FORMAT_C8,
DRM_FORMAT_RGB565,
DRM_FORMAT_XRGB8888,
DRM_FORMAT_XBGR8888,
DRM_FORMAT_ARGB8888,
DRM_FORMAT_ABGR8888,
DRM_FORMAT_XRGB2101010,
DRM_FORMAT_XBGR2101010,
DRM_FORMAT_YUYV,
DRM_FORMAT_YVYU,
DRM_FORMAT_UYVY,
DRM_FORMAT_VYUY,
};
/* Cursor formats */
static const uint32_t intel_cursor_formats[] = {
DRM_FORMAT_ARGB8888,
};
static void i9xx_crtc_clock_get(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config);
static void ironlake_pch_clock_get(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config);
static int intel_framebuffer_init(struct drm_device *dev,
struct intel_framebuffer *ifb,
struct drm_mode_fb_cmd2 *mode_cmd,
struct drm_i915_gem_object *obj);
static void i9xx_set_pipeconf(struct intel_crtc *intel_crtc);
static void intel_set_pipe_timings(struct intel_crtc *intel_crtc);
static void intel_set_pipe_src_size(struct intel_crtc *intel_crtc);
static void intel_cpu_transcoder_set_m_n(struct intel_crtc *crtc,
struct intel_link_m_n *m_n,
struct intel_link_m_n *m2_n2);
static void ironlake_set_pipeconf(struct drm_crtc *crtc);
static void haswell_set_pipeconf(struct drm_crtc *crtc);
static void haswell_set_pipemisc(struct drm_crtc *crtc);
static void vlv_prepare_pll(struct intel_crtc *crtc,
const struct intel_crtc_state *pipe_config);
static void chv_prepare_pll(struct intel_crtc *crtc,
const struct intel_crtc_state *pipe_config);
static void intel_begin_crtc_commit(struct drm_crtc *, struct drm_crtc_state *);
static void intel_finish_crtc_commit(struct drm_crtc *, struct drm_crtc_state *);
static void skl_init_scalers(struct drm_device *dev, struct intel_crtc *intel_crtc,
struct intel_crtc_state *crtc_state);
static void skylake_pfit_enable(struct intel_crtc *crtc);
static void ironlake_pfit_disable(struct intel_crtc *crtc, bool force);
static void ironlake_pfit_enable(struct intel_crtc *crtc);
static void intel_modeset_setup_hw_state(struct drm_device *dev);
static void intel_pre_disable_primary_noatomic(struct drm_crtc *crtc);
static int ilk_max_pixel_rate(struct drm_atomic_state *state);
static int bxt_calc_cdclk(int max_pixclk);
struct intel_limit {
struct {
int min, max;
} dot, vco, n, m, m1, m2, p, p1;
struct {
int dot_limit;
int p2_slow, p2_fast;
} p2;
};
/* returns HPLL frequency in kHz */
static int valleyview_get_vco(struct drm_i915_private *dev_priv)
{
int hpll_freq, vco_freq[] = { 800, 1600, 2000, 2400 };
/* Obtain SKU information */
mutex_lock(&dev_priv->sb_lock);
hpll_freq = vlv_cck_read(dev_priv, CCK_FUSE_REG) &
CCK_FUSE_HPLL_FREQ_MASK;
mutex_unlock(&dev_priv->sb_lock);
return vco_freq[hpll_freq] * 1000;
}
int vlv_get_cck_clock(struct drm_i915_private *dev_priv,
const char *name, u32 reg, int ref_freq)
{
u32 val;
int divider;
mutex_lock(&dev_priv->sb_lock);
val = vlv_cck_read(dev_priv, reg);
mutex_unlock(&dev_priv->sb_lock);
divider = val & CCK_FREQUENCY_VALUES;
WARN((val & CCK_FREQUENCY_STATUS) !=
(divider << CCK_FREQUENCY_STATUS_SHIFT),
"%s change in progress\n", name);
return DIV_ROUND_CLOSEST(ref_freq << 1, divider + 1);
}
static int vlv_get_cck_clock_hpll(struct drm_i915_private *dev_priv,
const char *name, u32 reg)
{
if (dev_priv->hpll_freq == 0)
dev_priv->hpll_freq = valleyview_get_vco(dev_priv);
return vlv_get_cck_clock(dev_priv, name, reg,
dev_priv->hpll_freq);
}
static int
intel_pch_rawclk(struct drm_i915_private *dev_priv)
{
return (I915_READ(PCH_RAWCLK_FREQ) & RAWCLK_FREQ_MASK) * 1000;
}
static int
intel_vlv_hrawclk(struct drm_i915_private *dev_priv)
{
/* RAWCLK_FREQ_VLV register updated from power well code */
return vlv_get_cck_clock_hpll(dev_priv, "hrawclk",
CCK_DISPLAY_REF_CLOCK_CONTROL);
}
static int
intel_g4x_hrawclk(struct drm_i915_private *dev_priv)
{
uint32_t clkcfg;
/* hrawclock is 1/4 the FSB frequency */
clkcfg = I915_READ(CLKCFG);
switch (clkcfg & CLKCFG_FSB_MASK) {
case CLKCFG_FSB_400:
return 100000;
case CLKCFG_FSB_533:
return 133333;
case CLKCFG_FSB_667:
return 166667;
case CLKCFG_FSB_800:
return 200000;
case CLKCFG_FSB_1067:
return 266667;
case CLKCFG_FSB_1333:
return 333333;
/* these two are just a guess; one of them might be right */
case CLKCFG_FSB_1600:
case CLKCFG_FSB_1600_ALT:
return 400000;
default:
return 133333;
}
}
void intel_update_rawclk(struct drm_i915_private *dev_priv)
{
if (HAS_PCH_SPLIT(dev_priv))
dev_priv->rawclk_freq = intel_pch_rawclk(dev_priv);
else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
dev_priv->rawclk_freq = intel_vlv_hrawclk(dev_priv);
else if (IS_G4X(dev_priv) || IS_PINEVIEW(dev_priv))
dev_priv->rawclk_freq = intel_g4x_hrawclk(dev_priv);
else
return; /* no rawclk on other platforms, or no need to know it */
DRM_DEBUG_DRIVER("rawclk rate: %d kHz\n", dev_priv->rawclk_freq);
}
static void intel_update_czclk(struct drm_i915_private *dev_priv)
{
if (!(IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)))
return;
dev_priv->czclk_freq = vlv_get_cck_clock_hpll(dev_priv, "czclk",
CCK_CZ_CLOCK_CONTROL);
DRM_DEBUG_DRIVER("CZ clock rate: %d kHz\n", dev_priv->czclk_freq);
}
static inline u32 /* units of 100MHz */
intel_fdi_link_freq(struct drm_i915_private *dev_priv,
const struct intel_crtc_state *pipe_config)
{
if (HAS_DDI(dev_priv))
return pipe_config->port_clock; /* SPLL */
else if (IS_GEN5(dev_priv))
return ((I915_READ(FDI_PLL_BIOS_0) & FDI_PLL_FB_CLOCK_MASK) + 2) * 10000;
else
return 270000;
}
static const struct intel_limit intel_limits_i8xx_dac = {
.dot = { .min = 25000, .max = 350000 },
.vco = { .min = 908000, .max = 1512000 },
.n = { .min = 2, .max = 16 },
.m = { .min = 96, .max = 140 },
.m1 = { .min = 18, .max = 26 },
.m2 = { .min = 6, .max = 16 },
.p = { .min = 4, .max = 128 },
.p1 = { .min = 2, .max = 33 },
.p2 = { .dot_limit = 165000,
.p2_slow = 4, .p2_fast = 2 },
};
static const struct intel_limit intel_limits_i8xx_dvo = {
.dot = { .min = 25000, .max = 350000 },
.vco = { .min = 908000, .max = 1512000 },
.n = { .min = 2, .max = 16 },
.m = { .min = 96, .max = 140 },
.m1 = { .min = 18, .max = 26 },
.m2 = { .min = 6, .max = 16 },
.p = { .min = 4, .max = 128 },
.p1 = { .min = 2, .max = 33 },
.p2 = { .dot_limit = 165000,
.p2_slow = 4, .p2_fast = 4 },
};
static const struct intel_limit intel_limits_i8xx_lvds = {
.dot = { .min = 25000, .max = 350000 },
.vco = { .min = 908000, .max = 1512000 },
.n = { .min = 2, .max = 16 },
.m = { .min = 96, .max = 140 },
.m1 = { .min = 18, .max = 26 },
.m2 = { .min = 6, .max = 16 },
.p = { .min = 4, .max = 128 },
.p1 = { .min = 1, .max = 6 },
.p2 = { .dot_limit = 165000,
.p2_slow = 14, .p2_fast = 7 },
};
static const struct intel_limit intel_limits_i9xx_sdvo = {
.dot = { .min = 20000, .max = 400000 },
.vco = { .min = 1400000, .max = 2800000 },
.n = { .min = 1, .max = 6 },
.m = { .min = 70, .max = 120 },
.m1 = { .min = 8, .max = 18 },
.m2 = { .min = 3, .max = 7 },
.p = { .min = 5, .max = 80 },
.p1 = { .min = 1, .max = 8 },
.p2 = { .dot_limit = 200000,
.p2_slow = 10, .p2_fast = 5 },
};
static const struct intel_limit intel_limits_i9xx_lvds = {
.dot = { .min = 20000, .max = 400000 },
.vco = { .min = 1400000, .max = 2800000 },
.n = { .min = 1, .max = 6 },
.m = { .min = 70, .max = 120 },
.m1 = { .min = 8, .max = 18 },
.m2 = { .min = 3, .max = 7 },
.p = { .min = 7, .max = 98 },
.p1 = { .min = 1, .max = 8 },
.p2 = { .dot_limit = 112000,
.p2_slow = 14, .p2_fast = 7 },
};
static const struct intel_limit intel_limits_g4x_sdvo = {
.dot = { .min = 25000, .max = 270000 },
.vco = { .min = 1750000, .max = 3500000},
.n = { .min = 1, .max = 4 },
.m = { .min = 104, .max = 138 },
.m1 = { .min = 17, .max = 23 },
.m2 = { .min = 5, .max = 11 },
.p = { .min = 10, .max = 30 },
.p1 = { .min = 1, .max = 3},
.p2 = { .dot_limit = 270000,
.p2_slow = 10,
.p2_fast = 10
},
};
static const struct intel_limit intel_limits_g4x_hdmi = {
.dot = { .min = 22000, .max = 400000 },
.vco = { .min = 1750000, .max = 3500000},
.n = { .min = 1, .max = 4 },
.m = { .min = 104, .max = 138 },
.m1 = { .min = 16, .max = 23 },
.m2 = { .min = 5, .max = 11 },
.p = { .min = 5, .max = 80 },
.p1 = { .min = 1, .max = 8},
.p2 = { .dot_limit = 165000,
.p2_slow = 10, .p2_fast = 5 },
};
static const struct intel_limit intel_limits_g4x_single_channel_lvds = {
.dot = { .min = 20000, .max = 115000 },
.vco = { .min = 1750000, .max = 3500000 },
.n = { .min = 1, .max = 3 },
.m = { .min = 104, .max = 138 },
.m1 = { .min = 17, .max = 23 },
.m2 = { .min = 5, .max = 11 },
.p = { .min = 28, .max = 112 },
.p1 = { .min = 2, .max = 8 },
.p2 = { .dot_limit = 0,
.p2_slow = 14, .p2_fast = 14
},
};
static const struct intel_limit intel_limits_g4x_dual_channel_lvds = {
.dot = { .min = 80000, .max = 224000 },
.vco = { .min = 1750000, .max = 3500000 },
.n = { .min = 1, .max = 3 },
.m = { .min = 104, .max = 138 },
.m1 = { .min = 17, .max = 23 },
.m2 = { .min = 5, .max = 11 },
.p = { .min = 14, .max = 42 },
.p1 = { .min = 2, .max = 6 },
.p2 = { .dot_limit = 0,
.p2_slow = 7, .p2_fast = 7
},
};
static const struct intel_limit intel_limits_pineview_sdvo = {
.dot = { .min = 20000, .max = 400000},
.vco = { .min = 1700000, .max = 3500000 },
/* Pineview's Ncounter is a ring counter */
.n = { .min = 3, .max = 6 },
.m = { .min = 2, .max = 256 },
/* Pineview only has one combined m divider, which we treat as m2. */
.m1 = { .min = 0, .max = 0 },
.m2 = { .min = 0, .max = 254 },
.p = { .min = 5, .max = 80 },
.p1 = { .min = 1, .max = 8 },
.p2 = { .dot_limit = 200000,
.p2_slow = 10, .p2_fast = 5 },
};
static const struct intel_limit intel_limits_pineview_lvds = {
.dot = { .min = 20000, .max = 400000 },
.vco = { .min = 1700000, .max = 3500000 },
.n = { .min = 3, .max = 6 },
.m = { .min = 2, .max = 256 },
.m1 = { .min = 0, .max = 0 },
.m2 = { .min = 0, .max = 254 },
.p = { .min = 7, .max = 112 },
.p1 = { .min = 1, .max = 8 },
.p2 = { .dot_limit = 112000,
.p2_slow = 14, .p2_fast = 14 },
};
/* Ironlake / Sandybridge
*
* We calculate clock using (register_value + 2) for N/M1/M2, so here
* the range value for them is (actual_value - 2).
*/
static const struct intel_limit intel_limits_ironlake_dac = {
.dot = { .min = 25000, .max = 350000 },
.vco = { .min = 1760000, .max = 3510000 },
.n = { .min = 1, .max = 5 },
.m = { .min = 79, .max = 127 },
.m1 = { .min = 12, .max = 22 },
.m2 = { .min = 5, .max = 9 },
.p = { .min = 5, .max = 80 },
.p1 = { .min = 1, .max = 8 },
.p2 = { .dot_limit = 225000,
.p2_slow = 10, .p2_fast = 5 },
};
static const struct intel_limit intel_limits_ironlake_single_lvds = {
.dot = { .min = 25000, .max = 350000 },
.vco = { .min = 1760000, .max = 3510000 },
.n = { .min = 1, .max = 3 },
.m = { .min = 79, .max = 118 },
.m1 = { .min = 12, .max = 22 },
.m2 = { .min = 5, .max = 9 },
.p = { .min = 28, .max = 112 },
.p1 = { .min = 2, .max = 8 },
.p2 = { .dot_limit = 225000,
.p2_slow = 14, .p2_fast = 14 },
};
static const struct intel_limit intel_limits_ironlake_dual_lvds = {
.dot = { .min = 25000, .max = 350000 },
.vco = { .min = 1760000, .max = 3510000 },
.n = { .min = 1, .max = 3 },
.m = { .min = 79, .max = 127 },
.m1 = { .min = 12, .max = 22 },
.m2 = { .min = 5, .max = 9 },
.p = { .min = 14, .max = 56 },
.p1 = { .min = 2, .max = 8 },
.p2 = { .dot_limit = 225000,
.p2_slow = 7, .p2_fast = 7 },
};
/* LVDS 100mhz refclk limits. */
static const struct intel_limit intel_limits_ironlake_single_lvds_100m = {
.dot = { .min = 25000, .max = 350000 },
.vco = { .min = 1760000, .max = 3510000 },
.n = { .min = 1, .max = 2 },
.m = { .min = 79, .max = 126 },
.m1 = { .min = 12, .max = 22 },
.m2 = { .min = 5, .max = 9 },
.p = { .min = 28, .max = 112 },
.p1 = { .min = 2, .max = 8 },
.p2 = { .dot_limit = 225000,
.p2_slow = 14, .p2_fast = 14 },
};
static const struct intel_limit intel_limits_ironlake_dual_lvds_100m = {
.dot = { .min = 25000, .max = 350000 },
.vco = { .min = 1760000, .max = 3510000 },
.n = { .min = 1, .max = 3 },
.m = { .min = 79, .max = 126 },
.m1 = { .min = 12, .max = 22 },
.m2 = { .min = 5, .max = 9 },
.p = { .min = 14, .max = 42 },
.p1 = { .min = 2, .max = 6 },
.p2 = { .dot_limit = 225000,
.p2_slow = 7, .p2_fast = 7 },
};
static const struct intel_limit intel_limits_vlv = {
/*
* These are the data rate limits (measured in fast clocks)
* since those are the strictest limits we have. The fast
* clock and actual rate limits are more relaxed, so checking
* them would make no difference.
*/
.dot = { .min = 25000 * 5, .max = 270000 * 5 },
.vco = { .min = 4000000, .max = 6000000 },
.n = { .min = 1, .max = 7 },
.m1 = { .min = 2, .max = 3 },
.m2 = { .min = 11, .max = 156 },
.p1 = { .min = 2, .max = 3 },
.p2 = { .p2_slow = 2, .p2_fast = 20 }, /* slow=min, fast=max */
};
static const struct intel_limit intel_limits_chv = {
/*
* These are the data rate limits (measured in fast clocks)
* since those are the strictest limits we have. The fast
* clock and actual rate limits are more relaxed, so checking
* them would make no difference.
*/
.dot = { .min = 25000 * 5, .max = 540000 * 5},
.vco = { .min = 4800000, .max = 6480000 },
.n = { .min = 1, .max = 1 },
.m1 = { .min = 2, .max = 2 },
.m2 = { .min = 24 << 22, .max = 175 << 22 },
.p1 = { .min = 2, .max = 4 },
.p2 = { .p2_slow = 1, .p2_fast = 14 },
};
static const struct intel_limit intel_limits_bxt = {
/* FIXME: find real dot limits */
.dot = { .min = 0, .max = INT_MAX },
.vco = { .min = 4800000, .max = 6700000 },
.n = { .min = 1, .max = 1 },
.m1 = { .min = 2, .max = 2 },
/* FIXME: find real m2 limits */
.m2 = { .min = 2 << 22, .max = 255 << 22 },
.p1 = { .min = 2, .max = 4 },
.p2 = { .p2_slow = 1, .p2_fast = 20 },
};
static bool
needs_modeset(struct drm_crtc_state *state)
{
return drm_atomic_crtc_needs_modeset(state);
}
/*
* Platform specific helpers to calculate the port PLL loopback- (clock.m),
* and post-divider (clock.p) values, pre- (clock.vco) and post-divided fast
* (clock.dot) clock rates. This fast dot clock is fed to the port's IO logic.
* The helpers' return value is the rate of the clock that is fed to the
* display engine's pipe which can be the above fast dot clock rate or a
* divided-down version of it.
*/
/* m1 is reserved as 0 in Pineview, n is a ring counter */
static int pnv_calc_dpll_params(int refclk, struct dpll *clock)
{
clock->m = clock->m2 + 2;
clock->p = clock->p1 * clock->p2;
if (WARN_ON(clock->n == 0 || clock->p == 0))
return 0;
clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
return clock->dot;
}
static uint32_t i9xx_dpll_compute_m(struct dpll *dpll)
{
return 5 * (dpll->m1 + 2) + (dpll->m2 + 2);
}
static int i9xx_calc_dpll_params(int refclk, struct dpll *clock)
{
clock->m = i9xx_dpll_compute_m(clock);
clock->p = clock->p1 * clock->p2;
if (WARN_ON(clock->n + 2 == 0 || clock->p == 0))
return 0;
clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n + 2);
clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
return clock->dot;
}
static int vlv_calc_dpll_params(int refclk, struct dpll *clock)
{
clock->m = clock->m1 * clock->m2;
clock->p = clock->p1 * clock->p2;
if (WARN_ON(clock->n == 0 || clock->p == 0))
return 0;
clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
return clock->dot / 5;
}
int chv_calc_dpll_params(int refclk, struct dpll *clock)
{
clock->m = clock->m1 * clock->m2;
clock->p = clock->p1 * clock->p2;
if (WARN_ON(clock->n == 0 || clock->p == 0))
return 0;
clock->vco = DIV_ROUND_CLOSEST_ULL((uint64_t)refclk * clock->m,
clock->n << 22);
clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
return clock->dot / 5;
}
#define INTELPllInvalid(s) do { /* DRM_DEBUG(s); */ return false; } while (0)
/**
* Returns whether the given set of divisors are valid for a given refclk with
* the given connectors.
*/
static bool intel_PLL_is_valid(struct drm_device *dev,
const struct intel_limit *limit,
const struct dpll *clock)
{
if (clock->n < limit->n.min || limit->n.max < clock->n)
INTELPllInvalid("n out of range\n");
if (clock->p1 < limit->p1.min || limit->p1.max < clock->p1)
INTELPllInvalid("p1 out of range\n");
if (clock->m2 < limit->m2.min || limit->m2.max < clock->m2)
INTELPllInvalid("m2 out of range\n");
if (clock->m1 < limit->m1.min || limit->m1.max < clock->m1)
INTELPllInvalid("m1 out of range\n");
if (!IS_PINEVIEW(dev) && !IS_VALLEYVIEW(dev) &&
!IS_CHERRYVIEW(dev) && !IS_BROXTON(dev))
if (clock->m1 <= clock->m2)
INTELPllInvalid("m1 <= m2\n");
if (!IS_VALLEYVIEW(dev) && !IS_CHERRYVIEW(dev) && !IS_BROXTON(dev)) {
if (clock->p < limit->p.min || limit->p.max < clock->p)
INTELPllInvalid("p out of range\n");
if (clock->m < limit->m.min || limit->m.max < clock->m)
INTELPllInvalid("m out of range\n");
}
if (clock->vco < limit->vco.min || limit->vco.max < clock->vco)
INTELPllInvalid("vco out of range\n");
/* XXX: We may need to be checking "Dot clock" depending on the multiplier,
* connector, etc., rather than just a single range.
*/
if (clock->dot < limit->dot.min || limit->dot.max < clock->dot)
INTELPllInvalid("dot out of range\n");
return true;
}
static int
i9xx_select_p2_div(const struct intel_limit *limit,
const struct intel_crtc_state *crtc_state,
int target)
{
struct drm_device *dev = crtc_state->base.crtc->dev;
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
/*
* For LVDS just rely on its current settings for dual-channel.
* We haven't figured out how to reliably set up different
* single/dual channel state, if we even can.
*/
if (intel_is_dual_link_lvds(dev))
return limit->p2.p2_fast;
else
return limit->p2.p2_slow;
} else {
if (target < limit->p2.dot_limit)
return limit->p2.p2_slow;
else
return limit->p2.p2_fast;
}
}
/*
* Returns a set of divisors for the desired target clock with the given
* refclk, or FALSE. The returned values represent the clock equation:
* reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
*
* Target and reference clocks are specified in kHz.
*
* If match_clock is provided, then best_clock P divider must match the P
* divider from @match_clock used for LVDS downclocking.
*/
static bool
i9xx_find_best_dpll(const struct intel_limit *limit,
struct intel_crtc_state *crtc_state,
int target, int refclk, struct dpll *match_clock,
struct dpll *best_clock)
{
struct drm_device *dev = crtc_state->base.crtc->dev;
struct dpll clock;
int err = target;
memset(best_clock, 0, sizeof(*best_clock));
clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
clock.m1++) {
for (clock.m2 = limit->m2.min;
clock.m2 <= limit->m2.max; clock.m2++) {
if (clock.m2 >= clock.m1)
break;
for (clock.n = limit->n.min;
clock.n <= limit->n.max; clock.n++) {
for (clock.p1 = limit->p1.min;
clock.p1 <= limit->p1.max; clock.p1++) {
int this_err;
i9xx_calc_dpll_params(refclk, &clock);
if (!intel_PLL_is_valid(dev, limit,
&clock))
continue;
if (match_clock &&
clock.p != match_clock->p)
continue;
this_err = abs(clock.dot - target);
if (this_err < err) {
*best_clock = clock;
err = this_err;
}
}
}
}
}
return (err != target);
}
/*
* Returns a set of divisors for the desired target clock with the given
* refclk, or FALSE. The returned values represent the clock equation:
* reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
*
* Target and reference clocks are specified in kHz.
*
* If match_clock is provided, then best_clock P divider must match the P
* divider from @match_clock used for LVDS downclocking.
*/
static bool
pnv_find_best_dpll(const struct intel_limit *limit,
struct intel_crtc_state *crtc_state,
int target, int refclk, struct dpll *match_clock,
struct dpll *best_clock)
{
struct drm_device *dev = crtc_state->base.crtc->dev;
struct dpll clock;
int err = target;
memset(best_clock, 0, sizeof(*best_clock));
clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
clock.m1++) {
for (clock.m2 = limit->m2.min;
clock.m2 <= limit->m2.max; clock.m2++) {
for (clock.n = limit->n.min;
clock.n <= limit->n.max; clock.n++) {
for (clock.p1 = limit->p1.min;
clock.p1 <= limit->p1.max; clock.p1++) {
int this_err;
pnv_calc_dpll_params(refclk, &clock);
if (!intel_PLL_is_valid(dev, limit,
&clock))
continue;
if (match_clock &&
clock.p != match_clock->p)
continue;
this_err = abs(clock.dot - target);
if (this_err < err) {
*best_clock = clock;
err = this_err;
}
}
}
}
}
return (err != target);
}
/*
* Returns a set of divisors for the desired target clock with the given
* refclk, or FALSE. The returned values represent the clock equation:
* reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
*
* Target and reference clocks are specified in kHz.
*
* If match_clock is provided, then best_clock P divider must match the P
* divider from @match_clock used for LVDS downclocking.
*/
static bool
g4x_find_best_dpll(const struct intel_limit *limit,
struct intel_crtc_state *crtc_state,
int target, int refclk, struct dpll *match_clock,
struct dpll *best_clock)
{
struct drm_device *dev = crtc_state->base.crtc->dev;
struct dpll clock;
int max_n;
bool found = false;
/* approximately equals target * 0.00585 */
int err_most = (target >> 8) + (target >> 9);
memset(best_clock, 0, sizeof(*best_clock));
clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
max_n = limit->n.max;
/* based on hardware requirement, prefer smaller n to precision */
for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
/* based on hardware requirement, prefere larger m1,m2 */
for (clock.m1 = limit->m1.max;
clock.m1 >= limit->m1.min; clock.m1--) {
for (clock.m2 = limit->m2.max;
clock.m2 >= limit->m2.min; clock.m2--) {
for (clock.p1 = limit->p1.max;
clock.p1 >= limit->p1.min; clock.p1--) {
int this_err;
i9xx_calc_dpll_params(refclk, &clock);
if (!intel_PLL_is_valid(dev, limit,
&clock))
continue;
this_err = abs(clock.dot - target);
if (this_err < err_most) {
*best_clock = clock;
err_most = this_err;
max_n = clock.n;
found = true;
}
}
}
}
}
return found;
}
/*
* Check if the calculated PLL configuration is more optimal compared to the
* best configuration and error found so far. Return the calculated error.
*/
static bool vlv_PLL_is_optimal(struct drm_device *dev, int target_freq,
const struct dpll *calculated_clock,
const struct dpll *best_clock,
unsigned int best_error_ppm,
unsigned int *error_ppm)
{
/*
* For CHV ignore the error and consider only the P value.
* Prefer a bigger P value based on HW requirements.
*/
if (IS_CHERRYVIEW(dev)) {
*error_ppm = 0;
return calculated_clock->p > best_clock->p;
}
if (WARN_ON_ONCE(!target_freq))
return false;
*error_ppm = div_u64(1000000ULL *
abs(target_freq - calculated_clock->dot),
target_freq);
/*
* Prefer a better P value over a better (smaller) error if the error
* is small. Ensure this preference for future configurations too by
* setting the error to 0.
*/
if (*error_ppm < 100 && calculated_clock->p > best_clock->p) {
*error_ppm = 0;
return true;
}
return *error_ppm + 10 < best_error_ppm;
}
/*
* Returns a set of divisors for the desired target clock with the given
* refclk, or FALSE. The returned values represent the clock equation:
* reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
*/
static bool
vlv_find_best_dpll(const struct intel_limit *limit,
struct intel_crtc_state *crtc_state,
int target, int refclk, struct dpll *match_clock,
struct dpll *best_clock)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_device *dev = crtc->base.dev;
struct dpll clock;
unsigned int bestppm = 1000000;
/* min update 19.2 MHz */
int max_n = min(limit->n.max, refclk / 19200);
bool found = false;
target *= 5; /* fast clock */
memset(best_clock, 0, sizeof(*best_clock));
/* based on hardware requirement, prefer smaller n to precision */
for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
for (clock.p2 = limit->p2.p2_fast; clock.p2 >= limit->p2.p2_slow;
clock.p2 -= clock.p2 > 10 ? 2 : 1) {
clock.p = clock.p1 * clock.p2;
/* based on hardware requirement, prefer bigger m1,m2 values */
for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max; clock.m1++) {
unsigned int ppm;
clock.m2 = DIV_ROUND_CLOSEST(target * clock.p * clock.n,
refclk * clock.m1);
vlv_calc_dpll_params(refclk, &clock);
if (!intel_PLL_is_valid(dev, limit,
&clock))
continue;
if (!vlv_PLL_is_optimal(dev, target,
&clock,
best_clock,
bestppm, &ppm))
continue;
*best_clock = clock;
bestppm = ppm;
found = true;
}
}
}
}
return found;
}
/*
* Returns a set of divisors for the desired target clock with the given
* refclk, or FALSE. The returned values represent the clock equation:
* reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
*/
static bool
chv_find_best_dpll(const struct intel_limit *limit,
struct intel_crtc_state *crtc_state,
int target, int refclk, struct dpll *match_clock,
struct dpll *best_clock)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_device *dev = crtc->base.dev;
unsigned int best_error_ppm;
struct dpll clock;
uint64_t m2;
int found = false;
memset(best_clock, 0, sizeof(*best_clock));
best_error_ppm = 1000000;
/*
* Based on hardware doc, the n always set to 1, and m1 always
* set to 2. If requires to support 200Mhz refclk, we need to
* revisit this because n may not 1 anymore.
*/
clock.n = 1, clock.m1 = 2;
target *= 5; /* fast clock */
for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
for (clock.p2 = limit->p2.p2_fast;
clock.p2 >= limit->p2.p2_slow;
clock.p2 -= clock.p2 > 10 ? 2 : 1) {
unsigned int error_ppm;
clock.p = clock.p1 * clock.p2;
m2 = DIV_ROUND_CLOSEST_ULL(((uint64_t)target * clock.p *
clock.n) << 22, refclk * clock.m1);
if (m2 > INT_MAX/clock.m1)
continue;
clock.m2 = m2;
chv_calc_dpll_params(refclk, &clock);
if (!intel_PLL_is_valid(dev, limit, &clock))
continue;
if (!vlv_PLL_is_optimal(dev, target, &clock, best_clock,
best_error_ppm, &error_ppm))
continue;
*best_clock = clock;
best_error_ppm = error_ppm;
found = true;
}
}
return found;
}
bool bxt_find_best_dpll(struct intel_crtc_state *crtc_state, int target_clock,
struct dpll *best_clock)
{
int refclk = 100000;
const struct intel_limit *limit = &intel_limits_bxt;
return chv_find_best_dpll(limit, crtc_state,
target_clock, refclk, NULL, best_clock);
}
bool intel_crtc_active(struct drm_crtc *crtc)
{
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
/* Be paranoid as we can arrive here with only partial
* state retrieved from the hardware during setup.
*
* We can ditch the adjusted_mode.crtc_clock check as soon
* as Haswell has gained clock readout/fastboot support.
*
* We can ditch the crtc->primary->fb check as soon as we can
* properly reconstruct framebuffers.
*
* FIXME: The intel_crtc->active here should be switched to
* crtc->state->active once we have proper CRTC states wired up
* for atomic.
*/
return intel_crtc->active && crtc->primary->state->fb &&
intel_crtc->config->base.adjusted_mode.crtc_clock;
}
enum transcoder intel_pipe_to_cpu_transcoder(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
return intel_crtc->config->cpu_transcoder;
}
static bool pipe_dsl_stopped(struct drm_device *dev, enum pipe pipe)
{
struct drm_i915_private *dev_priv = to_i915(dev);
i915_reg_t reg = PIPEDSL(pipe);
u32 line1, line2;
u32 line_mask;
if (IS_GEN2(dev))
line_mask = DSL_LINEMASK_GEN2;
else
line_mask = DSL_LINEMASK_GEN3;
line1 = I915_READ(reg) & line_mask;
msleep(5);
line2 = I915_READ(reg) & line_mask;
return line1 == line2;
}
/*
* intel_wait_for_pipe_off - wait for pipe to turn off
* @crtc: crtc whose pipe to wait for
*
* After disabling a pipe, we can't wait for vblank in the usual way,
* spinning on the vblank interrupt status bit, since we won't actually
* see an interrupt when the pipe is disabled.
*
* On Gen4 and above:
* wait for the pipe register state bit to turn off
*
* Otherwise:
* wait for the display line value to settle (it usually
* ends up stopping at the start of the next frame).
*
*/
static void intel_wait_for_pipe_off(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
enum pipe pipe = crtc->pipe;
if (INTEL_INFO(dev)->gen >= 4) {
i915_reg_t reg = PIPECONF(cpu_transcoder);
/* Wait for the Pipe State to go off */
if (intel_wait_for_register(dev_priv,
reg, I965_PIPECONF_ACTIVE, 0,
100))
WARN(1, "pipe_off wait timed out\n");
} else {
/* Wait for the display line to settle */
if (wait_for(pipe_dsl_stopped(dev, pipe), 100))
WARN(1, "pipe_off wait timed out\n");
}
}
/* Only for pre-ILK configs */
void assert_pll(struct drm_i915_private *dev_priv,
enum pipe pipe, bool state)
{
u32 val;
bool cur_state;
val = I915_READ(DPLL(pipe));
cur_state = !!(val & DPLL_VCO_ENABLE);
I915_STATE_WARN(cur_state != state,
"PLL state assertion failure (expected %s, current %s)\n",
onoff(state), onoff(cur_state));
}
/* XXX: the dsi pll is shared between MIPI DSI ports */
void assert_dsi_pll(struct drm_i915_private *dev_priv, bool state)
{
u32 val;
bool cur_state;
mutex_lock(&dev_priv->sb_lock);
val = vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_CONTROL);
mutex_unlock(&dev_priv->sb_lock);
cur_state = val & DSI_PLL_VCO_EN;
I915_STATE_WARN(cur_state != state,
"DSI PLL state assertion failure (expected %s, current %s)\n",
onoff(state), onoff(cur_state));
}
static void assert_fdi_tx(struct drm_i915_private *dev_priv,
enum pipe pipe, bool state)
{
bool cur_state;
enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
pipe);
if (HAS_DDI(dev_priv)) {
/* DDI does not have a specific FDI_TX register */
u32 val = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
cur_state = !!(val & TRANS_DDI_FUNC_ENABLE);
} else {
u32 val = I915_READ(FDI_TX_CTL(pipe));
cur_state = !!(val & FDI_TX_ENABLE);
}
I915_STATE_WARN(cur_state != state,
"FDI TX state assertion failure (expected %s, current %s)\n",
onoff(state), onoff(cur_state));
}
#define assert_fdi_tx_enabled(d, p) assert_fdi_tx(d, p, true)
#define assert_fdi_tx_disabled(d, p) assert_fdi_tx(d, p, false)
static void assert_fdi_rx(struct drm_i915_private *dev_priv,
enum pipe pipe, bool state)
{
u32 val;
bool cur_state;
val = I915_READ(FDI_RX_CTL(pipe));
cur_state = !!(val & FDI_RX_ENABLE);
I915_STATE_WARN(cur_state != state,
"FDI RX state assertion failure (expected %s, current %s)\n",
onoff(state), onoff(cur_state));
}
#define assert_fdi_rx_enabled(d, p) assert_fdi_rx(d, p, true)
#define assert_fdi_rx_disabled(d, p) assert_fdi_rx(d, p, false)
static void assert_fdi_tx_pll_enabled(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
u32 val;
/* ILK FDI PLL is always enabled */
if (IS_GEN5(dev_priv))
return;
/* On Haswell, DDI ports are responsible for the FDI PLL setup */
if (HAS_DDI(dev_priv))
return;
val = I915_READ(FDI_TX_CTL(pipe));
I915_STATE_WARN(!(val & FDI_TX_PLL_ENABLE), "FDI TX PLL assertion failure, should be active but is disabled\n");
}
void assert_fdi_rx_pll(struct drm_i915_private *dev_priv,
enum pipe pipe, bool state)
{
u32 val;
bool cur_state;
val = I915_READ(FDI_RX_CTL(pipe));
cur_state = !!(val & FDI_RX_PLL_ENABLE);
I915_STATE_WARN(cur_state != state,
"FDI RX PLL assertion failure (expected %s, current %s)\n",
onoff(state), onoff(cur_state));
}
void assert_panel_unlocked(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
struct drm_device *dev = &dev_priv->drm;
i915_reg_t pp_reg;
u32 val;
enum pipe panel_pipe = PIPE_A;
bool locked = true;
if (WARN_ON(HAS_DDI(dev)))
return;
if (HAS_PCH_SPLIT(dev)) {
u32 port_sel;
pp_reg = PP_CONTROL(0);
port_sel = I915_READ(PP_ON_DELAYS(0)) & PANEL_PORT_SELECT_MASK;
if (port_sel == PANEL_PORT_SELECT_LVDS &&
I915_READ(PCH_LVDS) & LVDS_PIPEB_SELECT)
panel_pipe = PIPE_B;
/* XXX: else fix for eDP */
} else if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) {
/* presumably write lock depends on pipe, not port select */
pp_reg = PP_CONTROL(pipe);
panel_pipe = pipe;
} else {
pp_reg = PP_CONTROL(0);
if (I915_READ(LVDS) & LVDS_PIPEB_SELECT)
panel_pipe = PIPE_B;
}
val = I915_READ(pp_reg);
if (!(val & PANEL_POWER_ON) ||
((val & PANEL_UNLOCK_MASK) == PANEL_UNLOCK_REGS))
locked = false;
I915_STATE_WARN(panel_pipe == pipe && locked,
"panel assertion failure, pipe %c regs locked\n",
pipe_name(pipe));
}
static void assert_cursor(struct drm_i915_private *dev_priv,
enum pipe pipe, bool state)
{
struct drm_device *dev = &dev_priv->drm;
bool cur_state;
if (IS_845G(dev) || IS_I865G(dev))
cur_state = I915_READ(CURCNTR(PIPE_A)) & CURSOR_ENABLE;
else
cur_state = I915_READ(CURCNTR(pipe)) & CURSOR_MODE;
I915_STATE_WARN(cur_state != state,
"cursor on pipe %c assertion failure (expected %s, current %s)\n",
pipe_name(pipe), onoff(state), onoff(cur_state));
}
#define assert_cursor_enabled(d, p) assert_cursor(d, p, true)
#define assert_cursor_disabled(d, p) assert_cursor(d, p, false)
void assert_pipe(struct drm_i915_private *dev_priv,
enum pipe pipe, bool state)
{
bool cur_state;
enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
pipe);
enum intel_display_power_domain power_domain;
/* if we need the pipe quirk it must be always on */
if ((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
(pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
state = true;
power_domain = POWER_DOMAIN_TRANSCODER(cpu_transcoder);
if (intel_display_power_get_if_enabled(dev_priv, power_domain)) {
u32 val = I915_READ(PIPECONF(cpu_transcoder));
cur_state = !!(val & PIPECONF_ENABLE);
intel_display_power_put(dev_priv, power_domain);
} else {
cur_state = false;
}
I915_STATE_WARN(cur_state != state,
"pipe %c assertion failure (expected %s, current %s)\n",
pipe_name(pipe), onoff(state), onoff(cur_state));
}
static void assert_plane(struct drm_i915_private *dev_priv,
enum plane plane, bool state)
{
u32 val;
bool cur_state;
val = I915_READ(DSPCNTR(plane));
cur_state = !!(val & DISPLAY_PLANE_ENABLE);
I915_STATE_WARN(cur_state != state,
"plane %c assertion failure (expected %s, current %s)\n",
plane_name(plane), onoff(state), onoff(cur_state));
}
#define assert_plane_enabled(d, p) assert_plane(d, p, true)
#define assert_plane_disabled(d, p) assert_plane(d, p, false)
static void assert_planes_disabled(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
struct drm_device *dev = &dev_priv->drm;
int i;
/* Primary planes are fixed to pipes on gen4+ */
if (INTEL_INFO(dev)->gen >= 4) {
u32 val = I915_READ(DSPCNTR(pipe));
I915_STATE_WARN(val & DISPLAY_PLANE_ENABLE,
"plane %c assertion failure, should be disabled but not\n",
plane_name(pipe));
return;
}
/* Need to check both planes against the pipe */
for_each_pipe(dev_priv, i) {
u32 val = I915_READ(DSPCNTR(i));
enum pipe cur_pipe = (val & DISPPLANE_SEL_PIPE_MASK) >>
DISPPLANE_SEL_PIPE_SHIFT;
I915_STATE_WARN((val & DISPLAY_PLANE_ENABLE) && pipe == cur_pipe,
"plane %c assertion failure, should be off on pipe %c but is still active\n",
plane_name(i), pipe_name(pipe));
}
}
static void assert_sprites_disabled(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
struct drm_device *dev = &dev_priv->drm;
int sprite;
if (INTEL_INFO(dev)->gen >= 9) {
for_each_sprite(dev_priv, pipe, sprite) {
u32 val = I915_READ(PLANE_CTL(pipe, sprite));
I915_STATE_WARN(val & PLANE_CTL_ENABLE,
"plane %d assertion failure, should be off on pipe %c but is still active\n",
sprite, pipe_name(pipe));
}
} else if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) {
for_each_sprite(dev_priv, pipe, sprite) {
u32 val = I915_READ(SPCNTR(pipe, sprite));
I915_STATE_WARN(val & SP_ENABLE,
"sprite %c assertion failure, should be off on pipe %c but is still active\n",
sprite_name(pipe, sprite), pipe_name(pipe));
}
} else if (INTEL_INFO(dev)->gen >= 7) {
u32 val = I915_READ(SPRCTL(pipe));
I915_STATE_WARN(val & SPRITE_ENABLE,
"sprite %c assertion failure, should be off on pipe %c but is still active\n",
plane_name(pipe), pipe_name(pipe));
} else if (INTEL_INFO(dev)->gen >= 5) {
u32 val = I915_READ(DVSCNTR(pipe));
I915_STATE_WARN(val & DVS_ENABLE,
"sprite %c assertion failure, should be off on pipe %c but is still active\n",
plane_name(pipe), pipe_name(pipe));
}
}
static void assert_vblank_disabled(struct drm_crtc *crtc)
{
if (I915_STATE_WARN_ON(drm_crtc_vblank_get(crtc) == 0))
drm_crtc_vblank_put(crtc);
}
void assert_pch_transcoder_disabled(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
u32 val;
bool enabled;
val = I915_READ(PCH_TRANSCONF(pipe));
enabled = !!(val & TRANS_ENABLE);
I915_STATE_WARN(enabled,
"transcoder assertion failed, should be off on pipe %c but is still active\n",
pipe_name(pipe));
}
static bool dp_pipe_enabled(struct drm_i915_private *dev_priv,
enum pipe pipe, u32 port_sel, u32 val)
{
if ((val & DP_PORT_EN) == 0)
return false;
if (HAS_PCH_CPT(dev_priv)) {
u32 trans_dp_ctl = I915_READ(TRANS_DP_CTL(pipe));
if ((trans_dp_ctl & TRANS_DP_PORT_SEL_MASK) != port_sel)
return false;
} else if (IS_CHERRYVIEW(dev_priv)) {
if ((val & DP_PIPE_MASK_CHV) != DP_PIPE_SELECT_CHV(pipe))
return false;
} else {
if ((val & DP_PIPE_MASK) != (pipe << 30))
return false;
}
return true;
}
static bool hdmi_pipe_enabled(struct drm_i915_private *dev_priv,
enum pipe pipe, u32 val)
{
if ((val & SDVO_ENABLE) == 0)
return false;
if (HAS_PCH_CPT(dev_priv)) {
if ((val & SDVO_PIPE_SEL_MASK_CPT) != SDVO_PIPE_SEL_CPT(pipe))
return false;
} else if (IS_CHERRYVIEW(dev_priv)) {
if ((val & SDVO_PIPE_SEL_MASK_CHV) != SDVO_PIPE_SEL_CHV(pipe))
return false;
} else {
if ((val & SDVO_PIPE_SEL_MASK) != SDVO_PIPE_SEL(pipe))
return false;
}
return true;
}
static bool lvds_pipe_enabled(struct drm_i915_private *dev_priv,
enum pipe pipe, u32 val)
{
if ((val & LVDS_PORT_EN) == 0)
return false;
if (HAS_PCH_CPT(dev_priv)) {
if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
return false;
} else {
if ((val & LVDS_PIPE_MASK) != LVDS_PIPE(pipe))
return false;
}
return true;
}
static bool adpa_pipe_enabled(struct drm_i915_private *dev_priv,
enum pipe pipe, u32 val)
{
if ((val & ADPA_DAC_ENABLE) == 0)
return false;
if (HAS_PCH_CPT(dev_priv)) {
if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
return false;
} else {
if ((val & ADPA_PIPE_SELECT_MASK) != ADPA_PIPE_SELECT(pipe))
return false;
}
return true;
}
static void assert_pch_dp_disabled(struct drm_i915_private *dev_priv,
enum pipe pipe, i915_reg_t reg,
u32 port_sel)
{
u32 val = I915_READ(reg);
I915_STATE_WARN(dp_pipe_enabled(dev_priv, pipe, port_sel, val),
"PCH DP (0x%08x) enabled on transcoder %c, should be disabled\n",
i915_mmio_reg_offset(reg), pipe_name(pipe));
I915_STATE_WARN(HAS_PCH_IBX(dev_priv) && (val & DP_PORT_EN) == 0
&& (val & DP_PIPEB_SELECT),
"IBX PCH dp port still using transcoder B\n");
}
static void assert_pch_hdmi_disabled(struct drm_i915_private *dev_priv,
enum pipe pipe, i915_reg_t reg)
{
u32 val = I915_READ(reg);
I915_STATE_WARN(hdmi_pipe_enabled(dev_priv, pipe, val),
"PCH HDMI (0x%08x) enabled on transcoder %c, should be disabled\n",
i915_mmio_reg_offset(reg), pipe_name(pipe));
I915_STATE_WARN(HAS_PCH_IBX(dev_priv) && (val & SDVO_ENABLE) == 0
&& (val & SDVO_PIPE_B_SELECT),
"IBX PCH hdmi port still using transcoder B\n");
}
static void assert_pch_ports_disabled(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
u32 val;
assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_B, TRANS_DP_PORT_SEL_B);
assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_C, TRANS_DP_PORT_SEL_C);
assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_D, TRANS_DP_PORT_SEL_D);
val = I915_READ(PCH_ADPA);
I915_STATE_WARN(adpa_pipe_enabled(dev_priv, pipe, val),
"PCH VGA enabled on transcoder %c, should be disabled\n",
pipe_name(pipe));
val = I915_READ(PCH_LVDS);
I915_STATE_WARN(lvds_pipe_enabled(dev_priv, pipe, val),
"PCH LVDS enabled on transcoder %c, should be disabled\n",
pipe_name(pipe));
assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMIB);
assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMIC);
assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMID);
}
static void _vlv_enable_pll(struct intel_crtc *crtc,
const struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
I915_WRITE(DPLL(pipe), pipe_config->dpll_hw_state.dpll);
POSTING_READ(DPLL(pipe));
udelay(150);
if (intel_wait_for_register(dev_priv,
DPLL(pipe),
DPLL_LOCK_VLV,
DPLL_LOCK_VLV,
1))
DRM_ERROR("DPLL %d failed to lock\n", pipe);
}
static void vlv_enable_pll(struct intel_crtc *crtc,
const struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
assert_pipe_disabled(dev_priv, pipe);
/* PLL is protected by panel, make sure we can write it */
assert_panel_unlocked(dev_priv, pipe);
if (pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE)
_vlv_enable_pll(crtc, pipe_config);
I915_WRITE(DPLL_MD(pipe), pipe_config->dpll_hw_state.dpll_md);
POSTING_READ(DPLL_MD(pipe));
}
static void _chv_enable_pll(struct intel_crtc *crtc,
const struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
enum dpio_channel port = vlv_pipe_to_channel(pipe);
u32 tmp;
mutex_lock(&dev_priv->sb_lock);
/* Enable back the 10bit clock to display controller */
tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
tmp |= DPIO_DCLKP_EN;
vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), tmp);
mutex_unlock(&dev_priv->sb_lock);
/*
* Need to wait > 100ns between dclkp clock enable bit and PLL enable.
*/
udelay(1);
/* Enable PLL */
I915_WRITE(DPLL(pipe), pipe_config->dpll_hw_state.dpll);
/* Check PLL is locked */
if (intel_wait_for_register(dev_priv,
DPLL(pipe), DPLL_LOCK_VLV, DPLL_LOCK_VLV,
1))
DRM_ERROR("PLL %d failed to lock\n", pipe);
}
static void chv_enable_pll(struct intel_crtc *crtc,
const struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
assert_pipe_disabled(dev_priv, pipe);
/* PLL is protected by panel, make sure we can write it */
assert_panel_unlocked(dev_priv, pipe);
if (pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE)
_chv_enable_pll(crtc, pipe_config);
if (pipe != PIPE_A) {
/*
* WaPixelRepeatModeFixForC0:chv
*
* DPLLCMD is AWOL. Use chicken bits to propagate
* the value from DPLLBMD to either pipe B or C.
*/
I915_WRITE(CBR4_VLV, pipe == PIPE_B ? CBR_DPLLBMD_PIPE_B : CBR_DPLLBMD_PIPE_C);
I915_WRITE(DPLL_MD(PIPE_B), pipe_config->dpll_hw_state.dpll_md);
I915_WRITE(CBR4_VLV, 0);
dev_priv->chv_dpll_md[pipe] = pipe_config->dpll_hw_state.dpll_md;
/*
* DPLLB VGA mode also seems to cause problems.
* We should always have it disabled.
*/
WARN_ON((I915_READ(DPLL(PIPE_B)) & DPLL_VGA_MODE_DIS) == 0);
} else {
I915_WRITE(DPLL_MD(pipe), pipe_config->dpll_hw_state.dpll_md);
POSTING_READ(DPLL_MD(pipe));
}
}
static int intel_num_dvo_pipes(struct drm_device *dev)
{
struct intel_crtc *crtc;
int count = 0;
for_each_intel_crtc(dev, crtc) {
count += crtc->base.state->active &&
intel_crtc_has_type(crtc->config, INTEL_OUTPUT_DVO);
}
return count;
}
static void i9xx_enable_pll(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
i915_reg_t reg = DPLL(crtc->pipe);
u32 dpll = crtc->config->dpll_hw_state.dpll;
assert_pipe_disabled(dev_priv, crtc->pipe);
/* PLL is protected by panel, make sure we can write it */
if (IS_MOBILE(dev) && !IS_I830(dev))
assert_panel_unlocked(dev_priv, crtc->pipe);
/* Enable DVO 2x clock on both PLLs if necessary */
if (IS_I830(dev) && intel_num_dvo_pipes(dev) > 0) {
/*
* It appears to be important that we don't enable this
* for the current pipe before otherwise configuring the
* PLL. No idea how this should be handled if multiple
* DVO outputs are enabled simultaneosly.
*/
dpll |= DPLL_DVO_2X_MODE;
I915_WRITE(DPLL(!crtc->pipe),
I915_READ(DPLL(!crtc->pipe)) | DPLL_DVO_2X_MODE);
}
/*
* Apparently we need to have VGA mode enabled prior to changing
* the P1/P2 dividers. Otherwise the DPLL will keep using the old
* dividers, even though the register value does change.
*/
I915_WRITE(reg, 0);
I915_WRITE(reg, dpll);
/* Wait for the clocks to stabilize. */
POSTING_READ(reg);
udelay(150);
if (INTEL_INFO(dev)->gen >= 4) {
I915_WRITE(DPLL_MD(crtc->pipe),
crtc->config->dpll_hw_state.dpll_md);
} else {
/* The pixel multiplier can only be updated once the
* DPLL is enabled and the clocks are stable.
*
* So write it again.
*/
I915_WRITE(reg, dpll);
}
/* We do this three times for luck */
I915_WRITE(reg, dpll);
POSTING_READ(reg);
udelay(150); /* wait for warmup */
I915_WRITE(reg, dpll);
POSTING_READ(reg);
udelay(150); /* wait for warmup */
I915_WRITE(reg, dpll);
POSTING_READ(reg);
udelay(150); /* wait for warmup */
}
/**
* i9xx_disable_pll - disable a PLL
* @dev_priv: i915 private structure
* @pipe: pipe PLL to disable
*
* Disable the PLL for @pipe, making sure the pipe is off first.
*
* Note! This is for pre-ILK only.
*/
static void i9xx_disable_pll(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe = crtc->pipe;
/* Disable DVO 2x clock on both PLLs if necessary */
if (IS_I830(dev) &&
intel_crtc_has_type(crtc->config, INTEL_OUTPUT_DVO) &&
!intel_num_dvo_pipes(dev)) {
I915_WRITE(DPLL(PIPE_B),
I915_READ(DPLL(PIPE_B)) & ~DPLL_DVO_2X_MODE);
I915_WRITE(DPLL(PIPE_A),
I915_READ(DPLL(PIPE_A)) & ~DPLL_DVO_2X_MODE);
}
/* Don't disable pipe or pipe PLLs if needed */
if ((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
(pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
return;
/* Make sure the pipe isn't still relying on us */
assert_pipe_disabled(dev_priv, pipe);
I915_WRITE(DPLL(pipe), DPLL_VGA_MODE_DIS);
POSTING_READ(DPLL(pipe));
}
static void vlv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
{
u32 val;
/* Make sure the pipe isn't still relying on us */
assert_pipe_disabled(dev_priv, pipe);
val = DPLL_INTEGRATED_REF_CLK_VLV |
DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
if (pipe != PIPE_A)
val |= DPLL_INTEGRATED_CRI_CLK_VLV;
I915_WRITE(DPLL(pipe), val);
POSTING_READ(DPLL(pipe));
}
static void chv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
{
enum dpio_channel port = vlv_pipe_to_channel(pipe);
u32 val;
/* Make sure the pipe isn't still relying on us */
assert_pipe_disabled(dev_priv, pipe);
val = DPLL_SSC_REF_CLK_CHV |
DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
if (pipe != PIPE_A)
val |= DPLL_INTEGRATED_CRI_CLK_VLV;
I915_WRITE(DPLL(pipe), val);
POSTING_READ(DPLL(pipe));
mutex_lock(&dev_priv->sb_lock);
/* Disable 10bit clock to display controller */
val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
val &= ~DPIO_DCLKP_EN;
vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), val);
mutex_unlock(&dev_priv->sb_lock);
}
void vlv_wait_port_ready(struct drm_i915_private *dev_priv,
struct intel_digital_port *dport,
unsigned int expected_mask)
{
u32 port_mask;
i915_reg_t dpll_reg;
switch (dport->port) {
case PORT_B:
port_mask = DPLL_PORTB_READY_MASK;
dpll_reg = DPLL(0);
break;
case PORT_C:
port_mask = DPLL_PORTC_READY_MASK;
dpll_reg = DPLL(0);
expected_mask <<= 4;
break;
case PORT_D:
port_mask = DPLL_PORTD_READY_MASK;
dpll_reg = DPIO_PHY_STATUS;
break;
default:
BUG();
}
if (intel_wait_for_register(dev_priv,
dpll_reg, port_mask, expected_mask,
1000))
WARN(1, "timed out waiting for port %c ready: got 0x%x, expected 0x%x\n",
port_name(dport->port), I915_READ(dpll_reg) & port_mask, expected_mask);
}
static void ironlake_enable_pch_transcoder(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
struct drm_device *dev = &dev_priv->drm;
struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
i915_reg_t reg;
uint32_t val, pipeconf_val;
/* Make sure PCH DPLL is enabled */
assert_shared_dpll_enabled(dev_priv, intel_crtc->config->shared_dpll);
/* FDI must be feeding us bits for PCH ports */
assert_fdi_tx_enabled(dev_priv, pipe);
assert_fdi_rx_enabled(dev_priv, pipe);
if (HAS_PCH_CPT(dev)) {
/* Workaround: Set the timing override bit before enabling the
* pch transcoder. */
reg = TRANS_CHICKEN2(pipe);
val = I915_READ(reg);
val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
I915_WRITE(reg, val);
}
reg = PCH_TRANSCONF(pipe);
val = I915_READ(reg);
pipeconf_val = I915_READ(PIPECONF(pipe));
if (HAS_PCH_IBX(dev_priv)) {
/*
* Make the BPC in transcoder be consistent with
* that in pipeconf reg. For HDMI we must use 8bpc
* here for both 8bpc and 12bpc.
*/
val &= ~PIPECONF_BPC_MASK;
if (intel_crtc_has_type(intel_crtc->config, INTEL_OUTPUT_HDMI))
val |= PIPECONF_8BPC;
else
val |= pipeconf_val & PIPECONF_BPC_MASK;
}
val &= ~TRANS_INTERLACE_MASK;
if ((pipeconf_val & PIPECONF_INTERLACE_MASK) == PIPECONF_INTERLACED_ILK)
if (HAS_PCH_IBX(dev_priv) &&
intel_crtc_has_type(intel_crtc->config, INTEL_OUTPUT_SDVO))
val |= TRANS_LEGACY_INTERLACED_ILK;
else
val |= TRANS_INTERLACED;
else
val |= TRANS_PROGRESSIVE;
I915_WRITE(reg, val | TRANS_ENABLE);
if (intel_wait_for_register(dev_priv,
reg, TRANS_STATE_ENABLE, TRANS_STATE_ENABLE,
100))
DRM_ERROR("failed to enable transcoder %c\n", pipe_name(pipe));
}
static void lpt_enable_pch_transcoder(struct drm_i915_private *dev_priv,
enum transcoder cpu_transcoder)
{
u32 val, pipeconf_val;
/* FDI must be feeding us bits for PCH ports */
assert_fdi_tx_enabled(dev_priv, (enum pipe) cpu_transcoder);
assert_fdi_rx_enabled(dev_priv, TRANSCODER_A);
/* Workaround: set timing override bit. */
val = I915_READ(TRANS_CHICKEN2(PIPE_A));
val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
I915_WRITE(TRANS_CHICKEN2(PIPE_A), val);
val = TRANS_ENABLE;
pipeconf_val = I915_READ(PIPECONF(cpu_transcoder));
if ((pipeconf_val & PIPECONF_INTERLACE_MASK_HSW) ==
PIPECONF_INTERLACED_ILK)
val |= TRANS_INTERLACED;
else
val |= TRANS_PROGRESSIVE;
I915_WRITE(LPT_TRANSCONF, val);
if (intel_wait_for_register(dev_priv,
LPT_TRANSCONF,
TRANS_STATE_ENABLE,
TRANS_STATE_ENABLE,
100))
DRM_ERROR("Failed to enable PCH transcoder\n");
}
static void ironlake_disable_pch_transcoder(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
struct drm_device *dev = &dev_priv->drm;
i915_reg_t reg;
uint32_t val;
/* FDI relies on the transcoder */
assert_fdi_tx_disabled(dev_priv, pipe);
assert_fdi_rx_disabled(dev_priv, pipe);
/* Ports must be off as well */
assert_pch_ports_disabled(dev_priv, pipe);
reg = PCH_TRANSCONF(pipe);
val = I915_READ(reg);
val &= ~TRANS_ENABLE;
I915_WRITE(reg, val);
/* wait for PCH transcoder off, transcoder state */
if (intel_wait_for_register(dev_priv,
reg, TRANS_STATE_ENABLE, 0,
50))
DRM_ERROR("failed to disable transcoder %c\n", pipe_name(pipe));
if (HAS_PCH_CPT(dev)) {
/* Workaround: Clear the timing override chicken bit again. */
reg = TRANS_CHICKEN2(pipe);
val = I915_READ(reg);
val &= ~TRANS_CHICKEN2_TIMING_OVERRIDE;
I915_WRITE(reg, val);
}
}
void lpt_disable_pch_transcoder(struct drm_i915_private *dev_priv)
{
u32 val;
val = I915_READ(LPT_TRANSCONF);
val &= ~TRANS_ENABLE;
I915_WRITE(LPT_TRANSCONF, val);
/* wait for PCH transcoder off, transcoder state */
if (intel_wait_for_register(dev_priv,
LPT_TRANSCONF, TRANS_STATE_ENABLE, 0,
50))
DRM_ERROR("Failed to disable PCH transcoder\n");
/* Workaround: clear timing override bit. */
val = I915_READ(TRANS_CHICKEN2(PIPE_A));
val &= ~TRANS_CHICKEN2_TIMING_OVERRIDE;
I915_WRITE(TRANS_CHICKEN2(PIPE_A), val);
}
/**
* intel_enable_pipe - enable a pipe, asserting requirements
* @crtc: crtc responsible for the pipe
*
* Enable @crtc's pipe, making sure that various hardware specific requirements
* are met, if applicable, e.g. PLL enabled, LVDS pairs enabled, etc.
*/
static void intel_enable_pipe(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe = crtc->pipe;
enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
enum pipe pch_transcoder;
i915_reg_t reg;
u32 val;
DRM_DEBUG_KMS("enabling pipe %c\n", pipe_name(pipe));
assert_planes_disabled(dev_priv, pipe);
assert_cursor_disabled(dev_priv, pipe);
assert_sprites_disabled(dev_priv, pipe);
if (HAS_PCH_LPT(dev_priv))
pch_transcoder = TRANSCODER_A;
else
pch_transcoder = pipe;
/*
* A pipe without a PLL won't actually be able to drive bits from
* a plane. On ILK+ the pipe PLLs are integrated, so we don't
* need the check.
*/
if (HAS_GMCH_DISPLAY(dev_priv)) {
if (intel_crtc_has_type(crtc->config, INTEL_OUTPUT_DSI))
assert_dsi_pll_enabled(dev_priv);
else
assert_pll_enabled(dev_priv, pipe);
} else {
if (crtc->config->has_pch_encoder) {
/* if driving the PCH, we need FDI enabled */
assert_fdi_rx_pll_enabled(dev_priv, pch_transcoder);
assert_fdi_tx_pll_enabled(dev_priv,
(enum pipe) cpu_transcoder);
}
/* FIXME: assert CPU port conditions for SNB+ */
}
reg = PIPECONF(cpu_transcoder);
val = I915_READ(reg);
if (val & PIPECONF_ENABLE) {
WARN_ON(!((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
(pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE)));
return;
}
I915_WRITE(reg, val | PIPECONF_ENABLE);
POSTING_READ(reg);
/*
* Until the pipe starts DSL will read as 0, which would cause
* an apparent vblank timestamp jump, which messes up also the
* frame count when it's derived from the timestamps. So let's
* wait for the pipe to start properly before we call
* drm_crtc_vblank_on()
*/
if (dev->max_vblank_count == 0 &&
wait_for(intel_get_crtc_scanline(crtc) != crtc->scanline_offset, 50))
DRM_ERROR("pipe %c didn't start\n", pipe_name(pipe));
}
/**
* intel_disable_pipe - disable a pipe, asserting requirements
* @crtc: crtc whose pipes is to be disabled
*
* Disable the pipe of @crtc, making sure that various hardware
* specific requirements are met, if applicable, e.g. plane
* disabled, panel fitter off, etc.
*
* Will wait until the pipe has shut down before returning.
*/
static void intel_disable_pipe(struct intel_crtc *crtc)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
enum pipe pipe = crtc->pipe;
i915_reg_t reg;
u32 val;
DRM_DEBUG_KMS("disabling pipe %c\n", pipe_name(pipe));
/*
* Make sure planes won't keep trying to pump pixels to us,
* or we might hang the display.
*/
assert_planes_disabled(dev_priv, pipe);
assert_cursor_disabled(dev_priv, pipe);
assert_sprites_disabled(dev_priv, pipe);
reg = PIPECONF(cpu_transcoder);
val = I915_READ(reg);
if ((val & PIPECONF_ENABLE) == 0)
return;
/*
* Double wide has implications for planes
* so best keep it disabled when not needed.
*/
if (crtc->config->double_wide)
val &= ~PIPECONF_DOUBLE_WIDE;
/* Don't disable pipe or pipe PLLs if needed */
if (!(pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) &&
!(pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
val &= ~PIPECONF_ENABLE;
I915_WRITE(reg, val);
if ((val & PIPECONF_ENABLE) == 0)
intel_wait_for_pipe_off(crtc);
}
static unsigned int intel_tile_size(const struct drm_i915_private *dev_priv)
{
return IS_GEN2(dev_priv) ? 2048 : 4096;
}
static unsigned int intel_tile_width_bytes(const struct drm_i915_private *dev_priv,
uint64_t fb_modifier, unsigned int cpp)
{
switch (fb_modifier) {
case DRM_FORMAT_MOD_NONE:
return cpp;
case I915_FORMAT_MOD_X_TILED:
if (IS_GEN2(dev_priv))
return 128;
else
return 512;
case I915_FORMAT_MOD_Y_TILED:
if (IS_GEN2(dev_priv) || HAS_128_BYTE_Y_TILING(dev_priv))
return 128;
else
return 512;
case I915_FORMAT_MOD_Yf_TILED:
switch (cpp) {
case 1:
return 64;
case 2:
case 4:
return 128;
case 8:
case 16:
return 256;
default:
MISSING_CASE(cpp);
return cpp;
}
break;
default:
MISSING_CASE(fb_modifier);
return cpp;
}
}
unsigned int intel_tile_height(const struct drm_i915_private *dev_priv,
uint64_t fb_modifier, unsigned int cpp)
{
if (fb_modifier == DRM_FORMAT_MOD_NONE)
return 1;
else
return intel_tile_size(dev_priv) /
intel_tile_width_bytes(dev_priv, fb_modifier, cpp);
}
/* Return the tile dimensions in pixel units */
static void intel_tile_dims(const struct drm_i915_private *dev_priv,
unsigned int *tile_width,
unsigned int *tile_height,
uint64_t fb_modifier,
unsigned int cpp)
{
unsigned int tile_width_bytes =
intel_tile_width_bytes(dev_priv, fb_modifier, cpp);
*tile_width = tile_width_bytes / cpp;
*tile_height = intel_tile_size(dev_priv) / tile_width_bytes;
}
unsigned int
intel_fb_align_height(struct drm_device *dev, unsigned int height,
uint32_t pixel_format, uint64_t fb_modifier)
{
unsigned int cpp = drm_format_plane_cpp(pixel_format, 0);
unsigned int tile_height = intel_tile_height(to_i915(dev), fb_modifier, cpp);
return ALIGN(height, tile_height);
}
unsigned int intel_rotation_info_size(const struct intel_rotation_info *rot_info)
{
unsigned int size = 0;
int i;
for (i = 0 ; i < ARRAY_SIZE(rot_info->plane); i++)
size += rot_info->plane[i].width * rot_info->plane[i].height;
return size;
}
static void
intel_fill_fb_ggtt_view(struct i915_ggtt_view *view,
const struct drm_framebuffer *fb,
unsigned int rotation)
{
if (intel_rotation_90_or_270(rotation)) {
*view = i915_ggtt_view_rotated;
view->params.rotated = to_intel_framebuffer(fb)->rot_info;
} else {
*view = i915_ggtt_view_normal;
}
}
static unsigned int intel_linear_alignment(const struct drm_i915_private *dev_priv)
{
if (INTEL_INFO(dev_priv)->gen >= 9)
return 256 * 1024;
else if (IS_BROADWATER(dev_priv) || IS_CRESTLINE(dev_priv) ||
IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
return 128 * 1024;
else if (INTEL_INFO(dev_priv)->gen >= 4)
return 4 * 1024;
else
return 0;
}
static unsigned int intel_surf_alignment(const struct drm_i915_private *dev_priv,
uint64_t fb_modifier)
{
switch (fb_modifier) {
case DRM_FORMAT_MOD_NONE:
return intel_linear_alignment(dev_priv);
case I915_FORMAT_MOD_X_TILED:
if (INTEL_INFO(dev_priv)->gen >= 9)
return 256 * 1024;
return 0;
case I915_FORMAT_MOD_Y_TILED:
case I915_FORMAT_MOD_Yf_TILED:
return 1 * 1024 * 1024;
default:
MISSING_CASE(fb_modifier);
return 0;
}
}
struct i915_vma *
intel_pin_and_fence_fb_obj(struct drm_framebuffer *fb, unsigned int rotation)
{
struct drm_device *dev = fb->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_i915_gem_object *obj = intel_fb_obj(fb);
struct i915_ggtt_view view;
struct i915_vma *vma;
u32 alignment;
WARN_ON(!mutex_is_locked(&dev->struct_mutex));
alignment = intel_surf_alignment(dev_priv, fb->modifier[0]);
intel_fill_fb_ggtt_view(&view, fb, rotation);
/* Note that the w/a also requires 64 PTE of padding following the
* bo. We currently fill all unused PTE with the shadow page and so
* we should always have valid PTE following the scanout preventing
* the VT-d warning.
*/
if (intel_scanout_needs_vtd_wa(dev_priv) && alignment < 256 * 1024)
alignment = 256 * 1024;
/*
* Global gtt pte registers are special registers which actually forward
* writes to a chunk of system memory. Which means that there is no risk
* that the register values disappear as soon as we call
* intel_runtime_pm_put(), so it is correct to wrap only the
* pin/unpin/fence and not more.
*/
intel_runtime_pm_get(dev_priv);
vma = i915_gem_object_pin_to_display_plane(obj, alignment, &view);
if (IS_ERR(vma))
goto err;
if (i915_vma_is_map_and_fenceable(vma)) {
/* Install a fence for tiled scan-out. Pre-i965 always needs a
* fence, whereas 965+ only requires a fence if using
* framebuffer compression. For simplicity, we always, when
* possible, install a fence as the cost is not that onerous.
*
* If we fail to fence the tiled scanout, then either the
* modeset will reject the change (which is highly unlikely as
* the affected systems, all but one, do not have unmappable
* space) or we will not be able to enable full powersaving
* techniques (also likely not to apply due to various limits
* FBC and the like impose on the size of the buffer, which
* presumably we violated anyway with this unmappable buffer).
* Anyway, it is presumably better to stumble onwards with
* something and try to run the system in a "less than optimal"
* mode that matches the user configuration.
*/
if (i915_vma_get_fence(vma) == 0)
i915_vma_pin_fence(vma);
}
err:
intel_runtime_pm_put(dev_priv);
return vma;
}
void intel_unpin_fb_obj(struct drm_framebuffer *fb, unsigned int rotation)
{
struct drm_i915_gem_object *obj = intel_fb_obj(fb);
struct i915_ggtt_view view;
struct i915_vma *vma;
WARN_ON(!mutex_is_locked(&obj->base.dev->struct_mutex));
intel_fill_fb_ggtt_view(&view, fb, rotation);
vma = i915_gem_object_to_ggtt(obj, &view);
i915_vma_unpin_fence(vma);
i915_gem_object_unpin_from_display_plane(vma);
}
static int intel_fb_pitch(const struct drm_framebuffer *fb, int plane,
unsigned int rotation)
{
if (intel_rotation_90_or_270(rotation))
return to_intel_framebuffer(fb)->rotated[plane].pitch;
else
return fb->pitches[plane];
}
/*
* Convert the x/y offsets into a linear offset.
* Only valid with 0/180 degree rotation, which is fine since linear
* offset is only used with linear buffers on pre-hsw and tiled buffers
* with gen2/3, and 90/270 degree rotations isn't supported on any of them.
*/
u32 intel_fb_xy_to_linear(int x, int y,
const struct intel_plane_state *state,
int plane)
{
const struct drm_framebuffer *fb = state->base.fb;
unsigned int cpp = drm_format_plane_cpp(fb->pixel_format, plane);
unsigned int pitch = fb->pitches[plane];
return y * pitch + x * cpp;
}
/*
* Add the x/y offsets derived from fb->offsets[] to the user
* specified plane src x/y offsets. The resulting x/y offsets
* specify the start of scanout from the beginning of the gtt mapping.
*/
void intel_add_fb_offsets(int *x, int *y,
const struct intel_plane_state *state,
int plane)
{
const struct intel_framebuffer *intel_fb = to_intel_framebuffer(state->base.fb);
unsigned int rotation = state->base.rotation;
if (intel_rotation_90_or_270(rotation)) {
*x += intel_fb->rotated[plane].x;
*y += intel_fb->rotated[plane].y;
} else {
*x += intel_fb->normal[plane].x;
*y += intel_fb->normal[plane].y;
}
}
/*
* Input tile dimensions and pitch must already be
* rotated to match x and y, and in pixel units.
*/
static u32 _intel_adjust_tile_offset(int *x, int *y,
unsigned int tile_width,
unsigned int tile_height,
unsigned int tile_size,
unsigned int pitch_tiles,
u32 old_offset,
u32 new_offset)
{
unsigned int pitch_pixels = pitch_tiles * tile_width;
unsigned int tiles;
WARN_ON(old_offset & (tile_size - 1));
WARN_ON(new_offset & (tile_size - 1));
WARN_ON(new_offset > old_offset);
tiles = (old_offset - new_offset) / tile_size;
*y += tiles / pitch_tiles * tile_height;
*x += tiles % pitch_tiles * tile_width;
/* minimize x in case it got needlessly big */
*y += *x / pitch_pixels * tile_height;
*x %= pitch_pixels;
return new_offset;
}
/*
* Adjust the tile offset by moving the difference into
* the x/y offsets.
*/
static u32 intel_adjust_tile_offset(int *x, int *y,
const struct intel_plane_state *state, int plane,
u32 old_offset, u32 new_offset)
{
const struct drm_i915_private *dev_priv = to_i915(state->base.plane->dev);
const struct drm_framebuffer *fb = state->base.fb;
unsigned int cpp = drm_format_plane_cpp(fb->pixel_format, plane);
unsigned int rotation = state->base.rotation;
unsigned int pitch = intel_fb_pitch(fb, plane, rotation);
WARN_ON(new_offset > old_offset);
if (fb->modifier[plane] != DRM_FORMAT_MOD_NONE) {
unsigned int tile_size, tile_width, tile_height;
unsigned int pitch_tiles;
tile_size = intel_tile_size(dev_priv);
intel_tile_dims(dev_priv, &tile_width, &tile_height,
fb->modifier[plane], cpp);
if (intel_rotation_90_or_270(rotation)) {
pitch_tiles = pitch / tile_height;
swap(tile_width, tile_height);
} else {
pitch_tiles = pitch / (tile_width * cpp);
}
_intel_adjust_tile_offset(x, y, tile_width, tile_height,
tile_size, pitch_tiles,
old_offset, new_offset);
} else {
old_offset += *y * pitch + *x * cpp;
*y = (old_offset - new_offset) / pitch;
*x = ((old_offset - new_offset) - *y * pitch) / cpp;
}
return new_offset;
}
/*
* Computes the linear offset to the base tile and adjusts
* x, y. bytes per pixel is assumed to be a power-of-two.
*
* In the 90/270 rotated case, x and y are assumed
* to be already rotated to match the rotated GTT view, and
* pitch is the tile_height aligned framebuffer height.
*
* This function is used when computing the derived information
* under intel_framebuffer, so using any of that information
* here is not allowed. Anything under drm_framebuffer can be
* used. This is why the user has to pass in the pitch since it
* is specified in the rotated orientation.
*/
static u32 _intel_compute_tile_offset(const struct drm_i915_private *dev_priv,
int *x, int *y,
const struct drm_framebuffer *fb, int plane,
unsigned int pitch,
unsigned int rotation,
u32 alignment)
{
uint64_t fb_modifier = fb->modifier[plane];
unsigned int cpp = drm_format_plane_cpp(fb->pixel_format, plane);
u32 offset, offset_aligned;
if (alignment)
alignment--;
if (fb_modifier != DRM_FORMAT_MOD_NONE) {
unsigned int tile_size, tile_width, tile_height;
unsigned int tile_rows, tiles, pitch_tiles;
tile_size = intel_tile_size(dev_priv);
intel_tile_dims(dev_priv, &tile_width, &tile_height,
fb_modifier, cpp);
if (intel_rotation_90_or_270(rotation)) {
pitch_tiles = pitch / tile_height;
swap(tile_width, tile_height);
} else {
pitch_tiles = pitch / (tile_width * cpp);
}
tile_rows = *y / tile_height;
*y %= tile_height;
tiles = *x / tile_width;
*x %= tile_width;
offset = (tile_rows * pitch_tiles + tiles) * tile_size;
offset_aligned = offset & ~alignment;
_intel_adjust_tile_offset(x, y, tile_width, tile_height,
tile_size, pitch_tiles,
offset, offset_aligned);
} else {
offset = *y * pitch + *x * cpp;
offset_aligned = offset & ~alignment;
*y = (offset & alignment) / pitch;
*x = ((offset & alignment) - *y * pitch) / cpp;
}
return offset_aligned;
}
u32 intel_compute_tile_offset(int *x, int *y,
const struct intel_plane_state *state,
int plane)
{
const struct drm_i915_private *dev_priv = to_i915(state->base.plane->dev);
const struct drm_framebuffer *fb = state->base.fb;
unsigned int rotation = state->base.rotation;
int pitch = intel_fb_pitch(fb, plane, rotation);
u32 alignment;
/* AUX_DIST needs only 4K alignment */
if (fb->pixel_format == DRM_FORMAT_NV12 && plane == 1)
alignment = 4096;
else
alignment = intel_surf_alignment(dev_priv, fb->modifier[plane]);
return _intel_compute_tile_offset(dev_priv, x, y, fb, plane, pitch,
rotation, alignment);
}
/* Convert the fb->offset[] linear offset into x/y offsets */
static void intel_fb_offset_to_xy(int *x, int *y,
const struct drm_framebuffer *fb, int plane)
{
unsigned int cpp = drm_format_plane_cpp(fb->pixel_format, plane);
unsigned int pitch = fb->pitches[plane];
u32 linear_offset = fb->offsets[plane];
*y = linear_offset / pitch;
*x = linear_offset % pitch / cpp;
}
static unsigned int intel_fb_modifier_to_tiling(uint64_t fb_modifier)
{
switch (fb_modifier) {
case I915_FORMAT_MOD_X_TILED:
return I915_TILING_X;
case I915_FORMAT_MOD_Y_TILED:
return I915_TILING_Y;
default:
return I915_TILING_NONE;
}
}
static int
intel_fill_fb_info(struct drm_i915_private *dev_priv,
struct drm_framebuffer *fb)
{
struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
struct intel_rotation_info *rot_info = &intel_fb->rot_info;
u32 gtt_offset_rotated = 0;
unsigned int max_size = 0;
uint32_t format = fb->pixel_format;
int i, num_planes = drm_format_num_planes(format);
unsigned int tile_size = intel_tile_size(dev_priv);
for (i = 0; i < num_planes; i++) {
unsigned int width, height;
unsigned int cpp, size;
u32 offset;
int x, y;
cpp = drm_format_plane_cpp(format, i);
width = drm_format_plane_width(fb->width, format, i);
height = drm_format_plane_height(fb->height, format, i);
intel_fb_offset_to_xy(&x, &y, fb, i);
/*
* The fence (if used) is aligned to the start of the object
* so having the framebuffer wrap around across the edge of the
* fenced region doesn't really work. We have no API to configure
* the fence start offset within the object (nor could we probably
* on gen2/3). So it's just easier if we just require that the
* fb layout agrees with the fence layout. We already check that the
* fb stride matches the fence stride elsewhere.
*/
if (i915_gem_object_is_tiled(intel_fb->obj) &&
(x + width) * cpp > fb->pitches[i]) {
DRM_DEBUG("bad fb plane %d offset: 0x%x\n",
i, fb->offsets[i]);
return -EINVAL;
}
/*
* First pixel of the framebuffer from
* the start of the normal gtt mapping.
*/
intel_fb->normal[i].x = x;
intel_fb->normal[i].y = y;
offset = _intel_compute_tile_offset(dev_priv, &x, &y,
fb, 0, fb->pitches[i],
DRM_ROTATE_0, tile_size);
offset /= tile_size;
if (fb->modifier[i] != DRM_FORMAT_MOD_NONE) {
unsigned int tile_width, tile_height;
unsigned int pitch_tiles;
struct drm_rect r;
intel_tile_dims(dev_priv, &tile_width, &tile_height,
fb->modifier[i], cpp);
rot_info->plane[i].offset = offset;
rot_info->plane[i].stride = DIV_ROUND_UP(fb->pitches[i], tile_width * cpp);
rot_info->plane[i].width = DIV_ROUND_UP(x + width, tile_width);
rot_info->plane[i].height = DIV_ROUND_UP(y + height, tile_height);
intel_fb->rotated[i].pitch =
rot_info->plane[i].height * tile_height;
/* how many tiles does this plane need */
size = rot_info->plane[i].stride * rot_info->plane[i].height;
/*
* If the plane isn't horizontally tile aligned,
* we need one more tile.
*/
if (x != 0)
size++;
/* rotate the x/y offsets to match the GTT view */
r.x1 = x;
r.y1 = y;
r.x2 = x + width;
r.y2 = y + height;
drm_rect_rotate(&r,
rot_info->plane[i].width * tile_width,
rot_info->plane[i].height * tile_height,
DRM_ROTATE_270);
x = r.x1;
y = r.y1;
/* rotate the tile dimensions to match the GTT view */
pitch_tiles = intel_fb->rotated[i].pitch / tile_height;
swap(tile_width, tile_height);
/*
* We only keep the x/y offsets, so push all of the
* gtt offset into the x/y offsets.
*/
_intel_adjust_tile_offset(&x, &y, tile_size,
tile_width, tile_height, pitch_tiles,
gtt_offset_rotated * tile_size, 0);
gtt_offset_rotated += rot_info->plane[i].width * rot_info->plane[i].height;
/*
* First pixel of the framebuffer from
* the start of the rotated gtt mapping.
*/
intel_fb->rotated[i].x = x;
intel_fb->rotated[i].y = y;
} else {
size = DIV_ROUND_UP((y + height) * fb->pitches[i] +
x * cpp, tile_size);
}
/* how many tiles in total needed in the bo */
max_size = max(max_size, offset + size);
}
if (max_size * tile_size > to_intel_framebuffer(fb)->obj->base.size) {
DRM_DEBUG("fb too big for bo (need %u bytes, have %zu bytes)\n",
max_size * tile_size, to_intel_framebuffer(fb)->obj->base.size);
return -EINVAL;
}
return 0;
}
static int i9xx_format_to_fourcc(int format)
{
switch (format) {
case DISPPLANE_8BPP:
return DRM_FORMAT_C8;
case DISPPLANE_BGRX555:
return DRM_FORMAT_XRGB1555;
case DISPPLANE_BGRX565:
return DRM_FORMAT_RGB565;
default:
case DISPPLANE_BGRX888:
return DRM_FORMAT_XRGB8888;
case DISPPLANE_RGBX888:
return DRM_FORMAT_XBGR8888;
case DISPPLANE_BGRX101010:
return DRM_FORMAT_XRGB2101010;
case DISPPLANE_RGBX101010:
return DRM_FORMAT_XBGR2101010;
}
}
static int skl_format_to_fourcc(int format, bool rgb_order, bool alpha)
{
switch (format) {
case PLANE_CTL_FORMAT_RGB_565:
return DRM_FORMAT_RGB565;
default:
case PLANE_CTL_FORMAT_XRGB_8888:
if (rgb_order) {
if (alpha)
return DRM_FORMAT_ABGR8888;
else
return DRM_FORMAT_XBGR8888;
} else {
if (alpha)
return DRM_FORMAT_ARGB8888;
else
return DRM_FORMAT_XRGB8888;
}
case PLANE_CTL_FORMAT_XRGB_2101010:
if (rgb_order)
return DRM_FORMAT_XBGR2101010;
else
return DRM_FORMAT_XRGB2101010;
}
}
static bool
intel_alloc_initial_plane_obj(struct intel_crtc *crtc,
struct intel_initial_plane_config *plane_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct i915_ggtt *ggtt = &dev_priv->ggtt;
struct drm_i915_gem_object *obj = NULL;
struct drm_mode_fb_cmd2 mode_cmd = { 0 };
struct drm_framebuffer *fb = &plane_config->fb->base;
u32 base_aligned = round_down(plane_config->base, PAGE_SIZE);
u32 size_aligned = round_up(plane_config->base + plane_config->size,
PAGE_SIZE);
size_aligned -= base_aligned;
if (plane_config->size == 0)
return false;
/* If the FB is too big, just don't use it since fbdev is not very
* important and we should probably use that space with FBC or other
* features. */
if (size_aligned * 2 > ggtt->stolen_usable_size)
return false;
mutex_lock(&dev->struct_mutex);
obj = i915_gem_object_create_stolen_for_preallocated(dev,
base_aligned,
base_aligned,
size_aligned);
if (!obj) {
mutex_unlock(&dev->struct_mutex);
return false;
}
if (plane_config->tiling == I915_TILING_X)
obj->tiling_and_stride = fb->pitches[0] | I915_TILING_X;
mode_cmd.pixel_format = fb->pixel_format;
mode_cmd.width = fb->width;
mode_cmd.height = fb->height;
mode_cmd.pitches[0] = fb->pitches[0];
mode_cmd.modifier[0] = fb->modifier[0];
mode_cmd.flags = DRM_MODE_FB_MODIFIERS;
if (intel_framebuffer_init(dev, to_intel_framebuffer(fb),
&mode_cmd, obj)) {
DRM_DEBUG_KMS("intel fb init failed\n");
goto out_unref_obj;
}
mutex_unlock(&dev->struct_mutex);
DRM_DEBUG_KMS("initial plane fb obj %p\n", obj);
return true;
out_unref_obj:
i915_gem_object_put(obj);
mutex_unlock(&dev->struct_mutex);
return false;
}
/* Update plane->state->fb to match plane->fb after driver-internal updates */
static void
update_state_fb(struct drm_plane *plane)
{
if (plane->fb == plane->state->fb)
return;
if (plane->state->fb)
drm_framebuffer_unreference(plane->state->fb);
plane->state->fb = plane->fb;
if (plane->state->fb)
drm_framebuffer_reference(plane->state->fb);
}
static void
intel_find_initial_plane_obj(struct intel_crtc *intel_crtc,
struct intel_initial_plane_config *plane_config)
{
struct drm_device *dev = intel_crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_crtc *c;
struct intel_crtc *i;
struct drm_i915_gem_object *obj;
struct drm_plane *primary = intel_crtc->base.primary;
struct drm_plane_state *plane_state = primary->state;
struct drm_crtc_state *crtc_state = intel_crtc->base.state;
struct intel_plane *intel_plane = to_intel_plane(primary);
struct intel_plane_state *intel_state =
to_intel_plane_state(plane_state);
struct drm_framebuffer *fb;
if (!plane_config->fb)
return;
if (intel_alloc_initial_plane_obj(intel_crtc, plane_config)) {
fb = &plane_config->fb->base;
goto valid_fb;
}
kfree(plane_config->fb);
/*
* Failed to alloc the obj, check to see if we should share
* an fb with another CRTC instead
*/
for_each_crtc(dev, c) {
i = to_intel_crtc(c);
if (c == &intel_crtc->base)
continue;
if (!i->active)
continue;
fb = c->primary->fb;
if (!fb)
continue;
obj = intel_fb_obj(fb);
if (i915_gem_object_ggtt_offset(obj, NULL) == plane_config->base) {
drm_framebuffer_reference(fb);
goto valid_fb;
}
}
/*
* We've failed to reconstruct the BIOS FB. Current display state
* indicates that the primary plane is visible, but has a NULL FB,
* which will lead to problems later if we don't fix it up. The
* simplest solution is to just disable the primary plane now and
* pretend the BIOS never had it enabled.
*/
to_intel_plane_state(plane_state)->base.visible = false;
crtc_state->plane_mask &= ~(1 << drm_plane_index(primary));
intel_pre_disable_primary_noatomic(&intel_crtc->base);
intel_plane->disable_plane(primary, &intel_crtc->base);
return;
valid_fb:
plane_state->src_x = 0;
plane_state->src_y = 0;
plane_state->src_w = fb->width << 16;
plane_state->src_h = fb->height << 16;
plane_state->crtc_x = 0;
plane_state->crtc_y = 0;
plane_state->crtc_w = fb->width;
plane_state->crtc_h = fb->height;
intel_state->base.src.x1 = plane_state->src_x;
intel_state->base.src.y1 = plane_state->src_y;
intel_state->base.src.x2 = plane_state->src_x + plane_state->src_w;
intel_state->base.src.y2 = plane_state->src_y + plane_state->src_h;
intel_state->base.dst.x1 = plane_state->crtc_x;
intel_state->base.dst.y1 = plane_state->crtc_y;
intel_state->base.dst.x2 = plane_state->crtc_x + plane_state->crtc_w;
intel_state->base.dst.y2 = plane_state->crtc_y + plane_state->crtc_h;
obj = intel_fb_obj(fb);
if (i915_gem_object_is_tiled(obj))
dev_priv->preserve_bios_swizzle = true;
drm_framebuffer_reference(fb);
primary->fb = primary->state->fb = fb;
primary->crtc = primary->state->crtc = &intel_crtc->base;
intel_crtc->base.state->plane_mask |= (1 << drm_plane_index(primary));
atomic_or(to_intel_plane(primary)->frontbuffer_bit,
&obj->frontbuffer_bits);
}
static int skl_max_plane_width(const struct drm_framebuffer *fb, int plane,
unsigned int rotation)
{
int cpp = drm_format_plane_cpp(fb->pixel_format, plane);
switch (fb->modifier[plane]) {
case DRM_FORMAT_MOD_NONE:
case I915_FORMAT_MOD_X_TILED:
switch (cpp) {
case 8:
return 4096;
case 4:
case 2:
case 1:
return 8192;
default:
MISSING_CASE(cpp);
break;
}
break;
case I915_FORMAT_MOD_Y_TILED:
case I915_FORMAT_MOD_Yf_TILED:
switch (cpp) {
case 8:
return 2048;
case 4:
return 4096;
case 2:
case 1:
return 8192;
default:
MISSING_CASE(cpp);
break;
}
break;
default:
MISSING_CASE(fb->modifier[plane]);
}
return 2048;
}
static int skl_check_main_surface(struct intel_plane_state *plane_state)
{
const struct drm_i915_private *dev_priv = to_i915(plane_state->base.plane->dev);
const struct drm_framebuffer *fb = plane_state->base.fb;
unsigned int rotation = plane_state->base.rotation;
int x = plane_state->base.src.x1 >> 16;
int y = plane_state->base.src.y1 >> 16;
int w = drm_rect_width(&plane_state->base.src) >> 16;
int h = drm_rect_height(&plane_state->base.src) >> 16;
int max_width = skl_max_plane_width(fb, 0, rotation);
int max_height = 4096;
u32 alignment, offset, aux_offset = plane_state->aux.offset;
if (w > max_width || h > max_height) {
DRM_DEBUG_KMS("requested Y/RGB source size %dx%d too big (limit %dx%d)\n",
w, h, max_width, max_height);
return -EINVAL;
}
intel_add_fb_offsets(&x, &y, plane_state, 0);
offset = intel_compute_tile_offset(&x, &y, plane_state, 0);
alignment = intel_surf_alignment(dev_priv, fb->modifier[0]);
/*
* AUX surface offset is specified as the distance from the
* main surface offset, and it must be non-negative. Make
* sure that is what we will get.
*/
if (offset > aux_offset)
offset = intel_adjust_tile_offset(&x, &y, plane_state, 0,
offset, aux_offset & ~(alignment - 1));
/*
* When using an X-tiled surface, the plane blows up
* if the x offset + width exceed the stride.
*
* TODO: linear and Y-tiled seem fine, Yf untested,
*/
if (fb->modifier[0] == I915_FORMAT_MOD_X_TILED) {
int cpp = drm_format_plane_cpp(fb->pixel_format, 0);
while ((x + w) * cpp > fb->pitches[0]) {
if (offset == 0) {
DRM_DEBUG_KMS("Unable to find suitable display surface offset\n");
return -EINVAL;
}
offset = intel_adjust_tile_offset(&x, &y, plane_state, 0,
offset, offset - alignment);
}
}
plane_state->main.offset = offset;
plane_state->main.x = x;
plane_state->main.y = y;
return 0;
}
static int skl_check_nv12_aux_surface(struct intel_plane_state *plane_state)
{
const struct drm_framebuffer *fb = plane_state->base.fb;
unsigned int rotation = plane_state->base.rotation;
int max_width = skl_max_plane_width(fb, 1, rotation);
int max_height = 4096;
int x = plane_state->base.src.x1 >> 17;
int y = plane_state->base.src.y1 >> 17;
int w = drm_rect_width(&plane_state->base.src) >> 17;
int h = drm_rect_height(&plane_state->base.src) >> 17;
u32 offset;
intel_add_fb_offsets(&x, &y, plane_state, 1);
offset = intel_compute_tile_offset(&x, &y, plane_state, 1);
/* FIXME not quite sure how/if these apply to the chroma plane */
if (w > max_width || h > max_height) {
DRM_DEBUG_KMS("CbCr source size %dx%d too big (limit %dx%d)\n",
w, h, max_width, max_height);
return -EINVAL;
}
plane_state->aux.offset = offset;
plane_state->aux.x = x;
plane_state->aux.y = y;
return 0;
}
int skl_check_plane_surface(struct intel_plane_state *plane_state)
{
const struct drm_framebuffer *fb = plane_state->base.fb;
unsigned int rotation = plane_state->base.rotation;
int ret;
/* Rotate src coordinates to match rotated GTT view */
if (intel_rotation_90_or_270(rotation))
drm_rect_rotate(&plane_state->base.src,
fb->width, fb->height, DRM_ROTATE_270);
/*
* Handle the AUX surface first since
* the main surface setup depends on it.
*/
if (fb->pixel_format == DRM_FORMAT_NV12) {
ret = skl_check_nv12_aux_surface(plane_state);
if (ret)
return ret;
} else {
plane_state->aux.offset = ~0xfff;
plane_state->aux.x = 0;
plane_state->aux.y = 0;
}
ret = skl_check_main_surface(plane_state);
if (ret)
return ret;
return 0;
}
static void i9xx_update_primary_plane(struct drm_plane *primary,
const struct intel_crtc_state *crtc_state,
const struct intel_plane_state *plane_state)
{
struct drm_device *dev = primary->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_framebuffer *fb = plane_state->base.fb;
struct drm_i915_gem_object *obj = intel_fb_obj(fb);
int plane = intel_crtc->plane;
u32 linear_offset;
u32 dspcntr;
i915_reg_t reg = DSPCNTR(plane);
unsigned int rotation = plane_state->base.rotation;
int x = plane_state->base.src.x1 >> 16;
int y = plane_state->base.src.y1 >> 16;
dspcntr = DISPPLANE_GAMMA_ENABLE;
dspcntr |= DISPLAY_PLANE_ENABLE;
if (INTEL_INFO(dev)->gen < 4) {
if (intel_crtc->pipe == PIPE_B)
dspcntr |= DISPPLANE_SEL_PIPE_B;
/* pipesrc and dspsize control the size that is scaled from,
* which should always be the user's requested size.
*/
I915_WRITE(DSPSIZE(plane),
((crtc_state->pipe_src_h - 1) << 16) |
(crtc_state->pipe_src_w - 1));
I915_WRITE(DSPPOS(plane), 0);
} else if (IS_CHERRYVIEW(dev) && plane == PLANE_B) {
I915_WRITE(PRIMSIZE(plane),
((crtc_state->pipe_src_h - 1) << 16) |
(crtc_state->pipe_src_w - 1));
I915_WRITE(PRIMPOS(plane), 0);
I915_WRITE(PRIMCNSTALPHA(plane), 0);
}
switch (fb->pixel_format) {
case DRM_FORMAT_C8:
dspcntr |= DISPPLANE_8BPP;
break;
case DRM_FORMAT_XRGB1555:
dspcntr |= DISPPLANE_BGRX555;
break;
case DRM_FORMAT_RGB565:
dspcntr |= DISPPLANE_BGRX565;
break;
case DRM_FORMAT_XRGB8888:
dspcntr |= DISPPLANE_BGRX888;
break;
case DRM_FORMAT_XBGR8888:
dspcntr |= DISPPLANE_RGBX888;
break;
case DRM_FORMAT_XRGB2101010:
dspcntr |= DISPPLANE_BGRX101010;
break;
case DRM_FORMAT_XBGR2101010:
dspcntr |= DISPPLANE_RGBX101010;
break;
default:
BUG();
}
if (INTEL_GEN(dev_priv) >= 4 &&
fb->modifier[0] == I915_FORMAT_MOD_X_TILED)
dspcntr |= DISPPLANE_TILED;
if (IS_G4X(dev))
dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
intel_add_fb_offsets(&x, &y, plane_state, 0);
if (INTEL_INFO(dev)->gen >= 4)
intel_crtc->dspaddr_offset =
intel_compute_tile_offset(&x, &y, plane_state, 0);
if (rotation == DRM_ROTATE_180) {
dspcntr |= DISPPLANE_ROTATE_180;
x += (crtc_state->pipe_src_w - 1);
y += (crtc_state->pipe_src_h - 1);
}
linear_offset = intel_fb_xy_to_linear(x, y, plane_state, 0);
if (INTEL_INFO(dev)->gen < 4)
intel_crtc->dspaddr_offset = linear_offset;
intel_crtc->adjusted_x = x;
intel_crtc->adjusted_y = y;
I915_WRITE(reg, dspcntr);
I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
if (INTEL_INFO(dev)->gen >= 4) {
I915_WRITE(DSPSURF(plane),
intel_fb_gtt_offset(fb, rotation) +
intel_crtc->dspaddr_offset);
I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
I915_WRITE(DSPLINOFF(plane), linear_offset);
} else
I915_WRITE(DSPADDR(plane), i915_gem_object_ggtt_offset(obj, NULL) + linear_offset);
POSTING_READ(reg);
}
static void i9xx_disable_primary_plane(struct drm_plane *primary,
struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int plane = intel_crtc->plane;
I915_WRITE(DSPCNTR(plane), 0);
if (INTEL_INFO(dev_priv)->gen >= 4)
I915_WRITE(DSPSURF(plane), 0);
else
I915_WRITE(DSPADDR(plane), 0);
POSTING_READ(DSPCNTR(plane));
}
static void ironlake_update_primary_plane(struct drm_plane *primary,
const struct intel_crtc_state *crtc_state,
const struct intel_plane_state *plane_state)
{
struct drm_device *dev = primary->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_framebuffer *fb = plane_state->base.fb;
int plane = intel_crtc->plane;
u32 linear_offset;
u32 dspcntr;
i915_reg_t reg = DSPCNTR(plane);
unsigned int rotation = plane_state->base.rotation;
int x = plane_state->base.src.x1 >> 16;
int y = plane_state->base.src.y1 >> 16;
dspcntr = DISPPLANE_GAMMA_ENABLE;
dspcntr |= DISPLAY_PLANE_ENABLE;
if (IS_HASWELL(dev) || IS_BROADWELL(dev))
dspcntr |= DISPPLANE_PIPE_CSC_ENABLE;
switch (fb->pixel_format) {
case DRM_FORMAT_C8:
dspcntr |= DISPPLANE_8BPP;
break;
case DRM_FORMAT_RGB565:
dspcntr |= DISPPLANE_BGRX565;
break;
case DRM_FORMAT_XRGB8888:
dspcntr |= DISPPLANE_BGRX888;
break;
case DRM_FORMAT_XBGR8888:
dspcntr |= DISPPLANE_RGBX888;
break;
case DRM_FORMAT_XRGB2101010:
dspcntr |= DISPPLANE_BGRX101010;
break;
case DRM_FORMAT_XBGR2101010:
dspcntr |= DISPPLANE_RGBX101010;
break;
default:
BUG();
}
if (fb->modifier[0] == I915_FORMAT_MOD_X_TILED)
dspcntr |= DISPPLANE_TILED;
if (!IS_HASWELL(dev) && !IS_BROADWELL(dev))
dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
intel_add_fb_offsets(&x, &y, plane_state, 0);
intel_crtc->dspaddr_offset =
intel_compute_tile_offset(&x, &y, plane_state, 0);
if (rotation == DRM_ROTATE_180) {
dspcntr |= DISPPLANE_ROTATE_180;
if (!IS_HASWELL(dev) && !IS_BROADWELL(dev)) {
x += (crtc_state->pipe_src_w - 1);
y += (crtc_state->pipe_src_h - 1);
}
}
linear_offset = intel_fb_xy_to_linear(x, y, plane_state, 0);
intel_crtc->adjusted_x = x;
intel_crtc->adjusted_y = y;
I915_WRITE(reg, dspcntr);
I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
I915_WRITE(DSPSURF(plane),
intel_fb_gtt_offset(fb, rotation) +
intel_crtc->dspaddr_offset);
if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
I915_WRITE(DSPOFFSET(plane), (y << 16) | x);
} else {
I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
I915_WRITE(DSPLINOFF(plane), linear_offset);
}
POSTING_READ(reg);
}
u32 intel_fb_stride_alignment(const struct drm_i915_private *dev_priv,
uint64_t fb_modifier, uint32_t pixel_format)
{
if (fb_modifier == DRM_FORMAT_MOD_NONE) {
return 64;
} else {
int cpp = drm_format_plane_cpp(pixel_format, 0);
return intel_tile_width_bytes(dev_priv, fb_modifier, cpp);
}
}
u32 intel_fb_gtt_offset(struct drm_framebuffer *fb,
unsigned int rotation)
{
struct drm_i915_gem_object *obj = intel_fb_obj(fb);
struct i915_ggtt_view view;
struct i915_vma *vma;
intel_fill_fb_ggtt_view(&view, fb, rotation);
vma = i915_gem_object_to_ggtt(obj, &view);
if (WARN(!vma, "ggtt vma for display object not found! (view=%u)\n",
view.type))
return -1;
return i915_ggtt_offset(vma);
}
static void skl_detach_scaler(struct intel_crtc *intel_crtc, int id)
{
struct drm_device *dev = intel_crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
I915_WRITE(SKL_PS_CTRL(intel_crtc->pipe, id), 0);
I915_WRITE(SKL_PS_WIN_POS(intel_crtc->pipe, id), 0);
I915_WRITE(SKL_PS_WIN_SZ(intel_crtc->pipe, id), 0);
}
/*
* This function detaches (aka. unbinds) unused scalers in hardware
*/
static void skl_detach_scalers(struct intel_crtc *intel_crtc)
{
struct intel_crtc_scaler_state *scaler_state;
int i;
scaler_state = &intel_crtc->config->scaler_state;
/* loop through and disable scalers that aren't in use */
for (i = 0; i < intel_crtc->num_scalers; i++) {
if (!scaler_state->scalers[i].in_use)
skl_detach_scaler(intel_crtc, i);
}
}
u32 skl_plane_stride(const struct drm_framebuffer *fb, int plane,
unsigned int rotation)
{
const struct drm_i915_private *dev_priv = to_i915(fb->dev);
u32 stride = intel_fb_pitch(fb, plane, rotation);
/*
* The stride is either expressed as a multiple of 64 bytes chunks for
* linear buffers or in number of tiles for tiled buffers.
*/
if (intel_rotation_90_or_270(rotation)) {
int cpp = drm_format_plane_cpp(fb->pixel_format, plane);
stride /= intel_tile_height(dev_priv, fb->modifier[0], cpp);
} else {
stride /= intel_fb_stride_alignment(dev_priv, fb->modifier[0],
fb->pixel_format);
}
return stride;
}
u32 skl_plane_ctl_format(uint32_t pixel_format)
{
switch (pixel_format) {
case DRM_FORMAT_C8:
return PLANE_CTL_FORMAT_INDEXED;
case DRM_FORMAT_RGB565:
return PLANE_CTL_FORMAT_RGB_565;
case DRM_FORMAT_XBGR8888:
return PLANE_CTL_FORMAT_XRGB_8888 | PLANE_CTL_ORDER_RGBX;
case DRM_FORMAT_XRGB8888:
return PLANE_CTL_FORMAT_XRGB_8888;
/*
* XXX: For ARBG/ABGR formats we default to expecting scanout buffers
* to be already pre-multiplied. We need to add a knob (or a different
* DRM_FORMAT) for user-space to configure that.
*/
case DRM_FORMAT_ABGR8888:
return PLANE_CTL_FORMAT_XRGB_8888 | PLANE_CTL_ORDER_RGBX |
PLANE_CTL_ALPHA_SW_PREMULTIPLY;
case DRM_FORMAT_ARGB8888:
return PLANE_CTL_FORMAT_XRGB_8888 |
PLANE_CTL_ALPHA_SW_PREMULTIPLY;
case DRM_FORMAT_XRGB2101010:
return PLANE_CTL_FORMAT_XRGB_2101010;
case DRM_FORMAT_XBGR2101010:
return PLANE_CTL_ORDER_RGBX | PLANE_CTL_FORMAT_XRGB_2101010;
case DRM_FORMAT_YUYV:
return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_YUYV;
case DRM_FORMAT_YVYU:
return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_YVYU;
case DRM_FORMAT_UYVY:
return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_UYVY;
case DRM_FORMAT_VYUY:
return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_VYUY;
default:
MISSING_CASE(pixel_format);
}
return 0;
}
u32 skl_plane_ctl_tiling(uint64_t fb_modifier)
{
switch (fb_modifier) {
case DRM_FORMAT_MOD_NONE:
break;
case I915_FORMAT_MOD_X_TILED:
return PLANE_CTL_TILED_X;
case I915_FORMAT_MOD_Y_TILED:
return PLANE_CTL_TILED_Y;
case I915_FORMAT_MOD_Yf_TILED:
return PLANE_CTL_TILED_YF;
default:
MISSING_CASE(fb_modifier);
}
return 0;
}
u32 skl_plane_ctl_rotation(unsigned int rotation)
{
switch (rotation) {
case DRM_ROTATE_0:
break;
/*
* DRM_ROTATE_ is counter clockwise to stay compatible with Xrandr
* while i915 HW rotation is clockwise, thats why this swapping.
*/
case DRM_ROTATE_90:
return PLANE_CTL_ROTATE_270;
case DRM_ROTATE_180:
return PLANE_CTL_ROTATE_180;
case DRM_ROTATE_270:
return PLANE_CTL_ROTATE_90;
default:
MISSING_CASE(rotation);
}
return 0;
}
static void skylake_update_primary_plane(struct drm_plane *plane,
const struct intel_crtc_state *crtc_state,
const struct intel_plane_state *plane_state)
{
struct drm_device *dev = plane->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_framebuffer *fb = plane_state->base.fb;
const struct skl_wm_values *wm = &dev_priv->wm.skl_results;
int pipe = intel_crtc->pipe;
u32 plane_ctl;
unsigned int rotation = plane_state->base.rotation;
u32 stride = skl_plane_stride(fb, 0, rotation);
u32 surf_addr = plane_state->main.offset;
int scaler_id = plane_state->scaler_id;
int src_x = plane_state->main.x;
int src_y = plane_state->main.y;
int src_w = drm_rect_width(&plane_state->base.src) >> 16;
int src_h = drm_rect_height(&plane_state->base.src) >> 16;
int dst_x = plane_state->base.dst.x1;
int dst_y = plane_state->base.dst.y1;
int dst_w = drm_rect_width(&plane_state->base.dst);
int dst_h = drm_rect_height(&plane_state->base.dst);
plane_ctl = PLANE_CTL_ENABLE |
PLANE_CTL_PIPE_GAMMA_ENABLE |
PLANE_CTL_PIPE_CSC_ENABLE;
plane_ctl |= skl_plane_ctl_format(fb->pixel_format);
plane_ctl |= skl_plane_ctl_tiling(fb->modifier[0]);
plane_ctl |= PLANE_CTL_PLANE_GAMMA_DISABLE;
plane_ctl |= skl_plane_ctl_rotation(rotation);
/* Sizes are 0 based */
src_w--;
src_h--;
dst_w--;
dst_h--;
intel_crtc->dspaddr_offset = surf_addr;
intel_crtc->adjusted_x = src_x;
intel_crtc->adjusted_y = src_y;
if (wm->dirty_pipes & drm_crtc_mask(&intel_crtc->base))
skl_write_plane_wm(intel_crtc, wm, 0);
I915_WRITE(PLANE_CTL(pipe, 0), plane_ctl);
I915_WRITE(PLANE_OFFSET(pipe, 0), (src_y << 16) | src_x);
I915_WRITE(PLANE_STRIDE(pipe, 0), stride);
I915_WRITE(PLANE_SIZE(pipe, 0), (src_h << 16) | src_w);
if (scaler_id >= 0) {
uint32_t ps_ctrl = 0;
WARN_ON(!dst_w || !dst_h);
ps_ctrl = PS_SCALER_EN | PS_PLANE_SEL(0) |
crtc_state->scaler_state.scalers[scaler_id].mode;
I915_WRITE(SKL_PS_CTRL(pipe, scaler_id), ps_ctrl);
I915_WRITE(SKL_PS_PWR_GATE(pipe, scaler_id), 0);
I915_WRITE(SKL_PS_WIN_POS(pipe, scaler_id), (dst_x << 16) | dst_y);
I915_WRITE(SKL_PS_WIN_SZ(pipe, scaler_id), (dst_w << 16) | dst_h);
I915_WRITE(PLANE_POS(pipe, 0), 0);
} else {
I915_WRITE(PLANE_POS(pipe, 0), (dst_y << 16) | dst_x);
}
I915_WRITE(PLANE_SURF(pipe, 0),
intel_fb_gtt_offset(fb, rotation) + surf_addr);
POSTING_READ(PLANE_SURF(pipe, 0));
}
static void skylake_disable_primary_plane(struct drm_plane *primary,
struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
/*
* We only populate skl_results on watermark updates, and if the
* plane's visiblity isn't actually changing neither is its watermarks.
*/
if (!crtc->primary->state->visible)
skl_write_plane_wm(intel_crtc, &dev_priv->wm.skl_results, 0);
I915_WRITE(PLANE_CTL(pipe, 0), 0);
I915_WRITE(PLANE_SURF(pipe, 0), 0);
POSTING_READ(PLANE_SURF(pipe, 0));
}
/* Assume fb object is pinned & idle & fenced and just update base pointers */
static int
intel_pipe_set_base_atomic(struct drm_crtc *crtc, struct drm_framebuffer *fb,
int x, int y, enum mode_set_atomic state)
{
/* Support for kgdboc is disabled, this needs a major rework. */
DRM_ERROR("legacy panic handler not supported any more.\n");
return -ENODEV;
}
static void intel_complete_page_flips(struct drm_i915_private *dev_priv)
{
struct intel_crtc *crtc;
for_each_intel_crtc(&dev_priv->drm, crtc)
intel_finish_page_flip_cs(dev_priv, crtc->pipe);
}
static void intel_update_primary_planes(struct drm_device *dev)
{
struct drm_crtc *crtc;
for_each_crtc(dev, crtc) {
struct intel_plane *plane = to_intel_plane(crtc->primary);
struct intel_plane_state *plane_state =
to_intel_plane_state(plane->base.state);
if (plane_state->base.visible)
plane->update_plane(&plane->base,
to_intel_crtc_state(crtc->state),
plane_state);
}
}
static int
__intel_display_resume(struct drm_device *dev,
struct drm_atomic_state *state)
{
struct drm_crtc_state *crtc_state;
struct drm_crtc *crtc;
int i, ret;
intel_modeset_setup_hw_state(dev);
i915_redisable_vga(dev);
if (!state)
return 0;
for_each_crtc_in_state(state, crtc, crtc_state, i) {
/*
* Force recalculation even if we restore
* current state. With fast modeset this may not result
* in a modeset when the state is compatible.
*/
crtc_state->mode_changed = true;
}
/* ignore any reset values/BIOS leftovers in the WM registers */
to_intel_atomic_state(state)->skip_intermediate_wm = true;
ret = drm_atomic_commit(state);
WARN_ON(ret == -EDEADLK);
return ret;
}
static bool gpu_reset_clobbers_display(struct drm_i915_private *dev_priv)
{
return intel_has_gpu_reset(dev_priv) &&
INTEL_GEN(dev_priv) < 5 && !IS_G4X(dev_priv);
}
void intel_prepare_reset(struct drm_i915_private *dev_priv)
{
struct drm_device *dev = &dev_priv->drm;
struct drm_modeset_acquire_ctx *ctx = &dev_priv->reset_ctx;
struct drm_atomic_state *state;
int ret;
/*
* Need mode_config.mutex so that we don't
* trample ongoing ->detect() and whatnot.
*/
mutex_lock(&dev->mode_config.mutex);
drm_modeset_acquire_init(ctx, 0);
while (1) {
ret = drm_modeset_lock_all_ctx(dev, ctx);
if (ret != -EDEADLK)
break;
drm_modeset_backoff(ctx);
}
/* reset doesn't touch the display, but flips might get nuked anyway, */
if (!i915.force_reset_modeset_test &&
!gpu_reset_clobbers_display(dev_priv))
return;
/*
* Disabling the crtcs gracefully seems nicer. Also the
* g33 docs say we should at least disable all the planes.
*/
state = drm_atomic_helper_duplicate_state(dev, ctx);
if (IS_ERR(state)) {
ret = PTR_ERR(state);
state = NULL;
DRM_ERROR("Duplicating state failed with %i\n", ret);
goto err;
}
ret = drm_atomic_helper_disable_all(dev, ctx);
if (ret) {
DRM_ERROR("Suspending crtc's failed with %i\n", ret);
goto err;
}
dev_priv->modeset_restore_state = state;
state->acquire_ctx = ctx;
return;
err:
drm_atomic_state_free(state);
}
void intel_finish_reset(struct drm_i915_private *dev_priv)
{
struct drm_device *dev = &dev_priv->drm;
struct drm_modeset_acquire_ctx *ctx = &dev_priv->reset_ctx;
struct drm_atomic_state *state = dev_priv->modeset_restore_state;
int ret;
/*
* Flips in the rings will be nuked by the reset,
* so complete all pending flips so that user space
* will get its events and not get stuck.
*/
intel_complete_page_flips(dev_priv);
dev_priv->modeset_restore_state = NULL;
/* reset doesn't touch the display */
if (!gpu_reset_clobbers_display(dev_priv)) {
if (!state) {
/*
* Flips in the rings have been nuked by the reset,
* so update the base address of all primary
* planes to the the last fb to make sure we're
* showing the correct fb after a reset.
*
* FIXME: Atomic will make this obsolete since we won't schedule
* CS-based flips (which might get lost in gpu resets) any more.
*/
intel_update_primary_planes(dev);
} else {
ret = __intel_display_resume(dev, state);
if (ret)
DRM_ERROR("Restoring old state failed with %i\n", ret);
}
} else {
/*
* The display has been reset as well,
* so need a full re-initialization.
*/
intel_runtime_pm_disable_interrupts(dev_priv);
intel_runtime_pm_enable_interrupts(dev_priv);
intel_pps_unlock_regs_wa(dev_priv);
intel_modeset_init_hw(dev);
spin_lock_irq(&dev_priv->irq_lock);
if (dev_priv->display.hpd_irq_setup)
dev_priv->display.hpd_irq_setup(dev_priv);
spin_unlock_irq(&dev_priv->irq_lock);
ret = __intel_display_resume(dev, state);
if (ret)
DRM_ERROR("Restoring old state failed with %i\n", ret);
intel_hpd_init(dev_priv);
}
drm_modeset_drop_locks(ctx);
drm_modeset_acquire_fini(ctx);
mutex_unlock(&dev->mode_config.mutex);
}
static bool abort_flip_on_reset(struct intel_crtc *crtc)
{
struct i915_gpu_error *error = &to_i915(crtc->base.dev)->gpu_error;
if (i915_reset_in_progress(error))
return true;
if (crtc->reset_count != i915_reset_count(error))
return true;
return false;
}
static bool intel_crtc_has_pending_flip(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
bool pending;
if (abort_flip_on_reset(intel_crtc))
return false;
spin_lock_irq(&dev->event_lock);
pending = to_intel_crtc(crtc)->flip_work != NULL;
spin_unlock_irq(&dev->event_lock);
return pending;
}
static void intel_update_pipe_config(struct intel_crtc *crtc,
struct intel_crtc_state *old_crtc_state)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc_state *pipe_config =
to_intel_crtc_state(crtc->base.state);
/* drm_atomic_helper_update_legacy_modeset_state might not be called. */
crtc->base.mode = crtc->base.state->mode;
DRM_DEBUG_KMS("Updating pipe size %ix%i -> %ix%i\n",
old_crtc_state->pipe_src_w, old_crtc_state->pipe_src_h,
pipe_config->pipe_src_w, pipe_config->pipe_src_h);
/*
* Update pipe size and adjust fitter if needed: the reason for this is
* that in compute_mode_changes we check the native mode (not the pfit
* mode) to see if we can flip rather than do a full mode set. In the
* fastboot case, we'll flip, but if we don't update the pipesrc and
* pfit state, we'll end up with a big fb scanned out into the wrong
* sized surface.
*/
I915_WRITE(PIPESRC(crtc->pipe),
((pipe_config->pipe_src_w - 1) << 16) |
(pipe_config->pipe_src_h - 1));
/* on skylake this is done by detaching scalers */
if (INTEL_INFO(dev)->gen >= 9) {
skl_detach_scalers(crtc);
if (pipe_config->pch_pfit.enabled)
skylake_pfit_enable(crtc);
} else if (HAS_PCH_SPLIT(dev)) {
if (pipe_config->pch_pfit.enabled)
ironlake_pfit_enable(crtc);
else if (old_crtc_state->pch_pfit.enabled)
ironlake_pfit_disable(crtc, true);
}
}
static void intel_fdi_normal_train(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
i915_reg_t reg;
u32 temp;
/* enable normal train */
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
if (IS_IVYBRIDGE(dev)) {
temp &= ~FDI_LINK_TRAIN_NONE_IVB;
temp |= FDI_LINK_TRAIN_NONE_IVB | FDI_TX_ENHANCE_FRAME_ENABLE;
} else {
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_NONE | FDI_TX_ENHANCE_FRAME_ENABLE;
}
I915_WRITE(reg, temp);
reg = FDI_RX_CTL(pipe);
temp = I915_READ(reg);
if (HAS_PCH_CPT(dev)) {
temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
temp |= FDI_LINK_TRAIN_NORMAL_CPT;
} else {
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_NONE;
}
I915_WRITE(reg, temp | FDI_RX_ENHANCE_FRAME_ENABLE);
/* wait one idle pattern time */
POSTING_READ(reg);
udelay(1000);
/* IVB wants error correction enabled */
if (IS_IVYBRIDGE(dev))
I915_WRITE(reg, I915_READ(reg) | FDI_FS_ERRC_ENABLE |
FDI_FE_ERRC_ENABLE);
}
/* The FDI link training functions for ILK/Ibexpeak. */
static void ironlake_fdi_link_train(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
i915_reg_t reg;
u32 temp, tries;
/* FDI needs bits from pipe first */
assert_pipe_enabled(dev_priv, pipe);
/* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
for train result */
reg = FDI_RX_IMR(pipe);
temp = I915_READ(reg);
temp &= ~FDI_RX_SYMBOL_LOCK;
temp &= ~FDI_RX_BIT_LOCK;
I915_WRITE(reg, temp);
I915_READ(reg);
udelay(150);
/* enable CPU FDI TX and PCH FDI RX */
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~FDI_DP_PORT_WIDTH_MASK;
temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_1;
I915_WRITE(reg, temp | FDI_TX_ENABLE);
reg = FDI_RX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_1;
I915_WRITE(reg, temp | FDI_RX_ENABLE);
POSTING_READ(reg);
udelay(150);
/* Ironlake workaround, enable clock pointer after FDI enable*/
I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR |
FDI_RX_PHASE_SYNC_POINTER_EN);
reg = FDI_RX_IIR(pipe);
for (tries = 0; tries < 5; tries++) {
temp = I915_READ(reg);
DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
if ((temp & FDI_RX_BIT_LOCK)) {
DRM_DEBUG_KMS("FDI train 1 done.\n");
I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
break;
}
}
if (tries == 5)
DRM_ERROR("FDI train 1 fail!\n");
/* Train 2 */
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_2;
I915_WRITE(reg, temp);
reg = FDI_RX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_2;
I915_WRITE(reg, temp);
POSTING_READ(reg);
udelay(150);
reg = FDI_RX_IIR(pipe);
for (tries = 0; tries < 5; tries++) {
temp = I915_READ(reg);
DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
if (temp & FDI_RX_SYMBOL_LOCK) {
I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
DRM_DEBUG_KMS("FDI train 2 done.\n");
break;
}
}
if (tries == 5)
DRM_ERROR("FDI train 2 fail!\n");
DRM_DEBUG_KMS("FDI train done\n");
}
static const int snb_b_fdi_train_param[] = {
FDI_LINK_TRAIN_400MV_0DB_SNB_B,
FDI_LINK_TRAIN_400MV_6DB_SNB_B,
FDI_LINK_TRAIN_600MV_3_5DB_SNB_B,
FDI_LINK_TRAIN_800MV_0DB_SNB_B,
};
/* The FDI link training functions for SNB/Cougarpoint. */
static void gen6_fdi_link_train(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
i915_reg_t reg;
u32 temp, i, retry;
/* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
for train result */
reg = FDI_RX_IMR(pipe);
temp = I915_READ(reg);
temp &= ~FDI_RX_SYMBOL_LOCK;
temp &= ~FDI_RX_BIT_LOCK;
I915_WRITE(reg, temp);
POSTING_READ(reg);
udelay(150);
/* enable CPU FDI TX and PCH FDI RX */
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~FDI_DP_PORT_WIDTH_MASK;
temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_1;
temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
/* SNB-B */
temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
I915_WRITE(reg, temp | FDI_TX_ENABLE);
I915_WRITE(FDI_RX_MISC(pipe),
FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
reg = FDI_RX_CTL(pipe);
temp = I915_READ(reg);
if (HAS_PCH_CPT(dev)) {
temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
} else {
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_1;
}
I915_WRITE(reg, temp | FDI_RX_ENABLE);
POSTING_READ(reg);
udelay(150);
for (i = 0; i < 4; i++) {
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
temp |= snb_b_fdi_train_param[i];
I915_WRITE(reg, temp);
POSTING_READ(reg);
udelay(500);
for (retry = 0; retry < 5; retry++) {
reg = FDI_RX_IIR(pipe);
temp = I915_READ(reg);
DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
if (temp & FDI_RX_BIT_LOCK) {
I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
DRM_DEBUG_KMS("FDI train 1 done.\n");
break;
}
udelay(50);
}
if (retry < 5)
break;
}
if (i == 4)
DRM_ERROR("FDI train 1 fail!\n");
/* Train 2 */
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_2;
if (IS_GEN6(dev)) {
temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
/* SNB-B */
temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
}
I915_WRITE(reg, temp);
reg = FDI_RX_CTL(pipe);
temp = I915_READ(reg);
if (HAS_PCH_CPT(dev)) {
temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
} else {
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_2;
}
I915_WRITE(reg, temp);
POSTING_READ(reg);
udelay(150);
for (i = 0; i < 4; i++) {
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
temp |= snb_b_fdi_train_param[i];
I915_WRITE(reg, temp);
POSTING_READ(reg);
udelay(500);
for (retry = 0; retry < 5; retry++) {
reg = FDI_RX_IIR(pipe);
temp = I915_READ(reg);
DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
if (temp & FDI_RX_SYMBOL_LOCK) {
I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
DRM_DEBUG_KMS("FDI train 2 done.\n");
break;
}
udelay(50);
}
if (retry < 5)
break;
}
if (i == 4)
DRM_ERROR("FDI train 2 fail!\n");
DRM_DEBUG_KMS("FDI train done.\n");
}
/* Manual link training for Ivy Bridge A0 parts */
static void ivb_manual_fdi_link_train(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
i915_reg_t reg;
u32 temp, i, j;
/* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
for train result */
reg = FDI_RX_IMR(pipe);
temp = I915_READ(reg);
temp &= ~FDI_RX_SYMBOL_LOCK;
temp &= ~FDI_RX_BIT_LOCK;
I915_WRITE(reg, temp);
POSTING_READ(reg);
udelay(150);
DRM_DEBUG_KMS("FDI_RX_IIR before link train 0x%x\n",
I915_READ(FDI_RX_IIR(pipe)));
/* Try each vswing and preemphasis setting twice before moving on */
for (j = 0; j < ARRAY_SIZE(snb_b_fdi_train_param) * 2; j++) {
/* disable first in case we need to retry */
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~(FDI_LINK_TRAIN_AUTO | FDI_LINK_TRAIN_NONE_IVB);
temp &= ~FDI_TX_ENABLE;
I915_WRITE(reg, temp);
reg = FDI_RX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~FDI_LINK_TRAIN_AUTO;
temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
temp &= ~FDI_RX_ENABLE;
I915_WRITE(reg, temp);
/* enable CPU FDI TX and PCH FDI RX */
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~FDI_DP_PORT_WIDTH_MASK;
temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
temp |= FDI_LINK_TRAIN_PATTERN_1_IVB;
temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
temp |= snb_b_fdi_train_param[j/2];
temp |= FDI_COMPOSITE_SYNC;
I915_WRITE(reg, temp | FDI_TX_ENABLE);
I915_WRITE(FDI_RX_MISC(pipe),
FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
reg = FDI_RX_CTL(pipe);
temp = I915_READ(reg);
temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
temp |= FDI_COMPOSITE_SYNC;
I915_WRITE(reg, temp | FDI_RX_ENABLE);
POSTING_READ(reg);
udelay(1); /* should be 0.5us */
for (i = 0; i < 4; i++) {
reg = FDI_RX_IIR(pipe);
temp = I915_READ(reg);
DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
if (temp & FDI_RX_BIT_LOCK ||
(I915_READ(reg) & FDI_RX_BIT_LOCK)) {
I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
DRM_DEBUG_KMS("FDI train 1 done, level %i.\n",
i);
break;
}
udelay(1); /* should be 0.5us */
}
if (i == 4) {
DRM_DEBUG_KMS("FDI train 1 fail on vswing %d\n", j / 2);
continue;
}
/* Train 2 */
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~FDI_LINK_TRAIN_NONE_IVB;
temp |= FDI_LINK_TRAIN_PATTERN_2_IVB;
I915_WRITE(reg, temp);
reg = FDI_RX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
I915_WRITE(reg, temp);
POSTING_READ(reg);
udelay(2); /* should be 1.5us */
for (i = 0; i < 4; i++) {
reg = FDI_RX_IIR(pipe);
temp = I915_READ(reg);
DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
if (temp & FDI_RX_SYMBOL_LOCK ||
(I915_READ(reg) & FDI_RX_SYMBOL_LOCK)) {
I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
DRM_DEBUG_KMS("FDI train 2 done, level %i.\n",
i);
goto train_done;
}
udelay(2); /* should be 1.5us */
}
if (i == 4)
DRM_DEBUG_KMS("FDI train 2 fail on vswing %d\n", j / 2);
}
train_done:
DRM_DEBUG_KMS("FDI train done.\n");
}
static void ironlake_fdi_pll_enable(struct intel_crtc *intel_crtc)
{
struct drm_device *dev = intel_crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
int pipe = intel_crtc->pipe;
i915_reg_t reg;
u32 temp;
/* enable PCH FDI RX PLL, wait warmup plus DMI latency */
reg = FDI_RX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~(FDI_DP_PORT_WIDTH_MASK | (0x7 << 16));
temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
I915_WRITE(reg, temp | FDI_RX_PLL_ENABLE);
POSTING_READ(reg);
udelay(200);
/* Switch from Rawclk to PCDclk */
temp = I915_READ(reg);
I915_WRITE(reg, temp | FDI_PCDCLK);
POSTING_READ(reg);
udelay(200);
/* Enable CPU FDI TX PLL, always on for Ironlake */
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
if ((temp & FDI_TX_PLL_ENABLE) == 0) {
I915_WRITE(reg, temp | FDI_TX_PLL_ENABLE);
POSTING_READ(reg);
udelay(100);
}
}
static void ironlake_fdi_pll_disable(struct intel_crtc *intel_crtc)
{
struct drm_device *dev = intel_crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
int pipe = intel_crtc->pipe;
i915_reg_t reg;
u32 temp;
/* Switch from PCDclk to Rawclk */
reg = FDI_RX_CTL(pipe);
temp = I915_READ(reg);
I915_WRITE(reg, temp & ~FDI_PCDCLK);
/* Disable CPU FDI TX PLL */
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
I915_WRITE(reg, temp & ~FDI_TX_PLL_ENABLE);
POSTING_READ(reg);
udelay(100);
reg = FDI_RX_CTL(pipe);
temp = I915_READ(reg);
I915_WRITE(reg, temp & ~FDI_RX_PLL_ENABLE);
/* Wait for the clocks to turn off. */
POSTING_READ(reg);
udelay(100);
}
static void ironlake_fdi_disable(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
i915_reg_t reg;
u32 temp;
/* disable CPU FDI tx and PCH FDI rx */
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
I915_WRITE(reg, temp & ~FDI_TX_ENABLE);
POSTING_READ(reg);
reg = FDI_RX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~(0x7 << 16);
temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
I915_WRITE(reg, temp & ~FDI_RX_ENABLE);
POSTING_READ(reg);
udelay(100);
/* Ironlake workaround, disable clock pointer after downing FDI */
if (HAS_PCH_IBX(dev))
I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
/* still set train pattern 1 */
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_1;
I915_WRITE(reg, temp);
reg = FDI_RX_CTL(pipe);
temp = I915_READ(reg);
if (HAS_PCH_CPT(dev)) {
temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
} else {
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_1;
}
/* BPC in FDI rx is consistent with that in PIPECONF */
temp &= ~(0x07 << 16);
temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
I915_WRITE(reg, temp);
POSTING_READ(reg);
udelay(100);
}
bool intel_has_pending_fb_unpin(struct drm_device *dev)
{
struct intel_crtc *crtc;
/* Note that we don't need to be called with mode_config.lock here
* as our list of CRTC objects is static for the lifetime of the
* device and so cannot disappear as we iterate. Similarly, we can
* happily treat the predicates as racy, atomic checks as userspace
* cannot claim and pin a new fb without at least acquring the
* struct_mutex and so serialising with us.
*/
for_each_intel_crtc(dev, crtc) {
if (atomic_read(&crtc->unpin_work_count) == 0)
continue;
if (crtc->flip_work)
intel_wait_for_vblank(dev, crtc->pipe);
return true;
}
return false;
}
static void page_flip_completed(struct intel_crtc *intel_crtc)
{
struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev);
struct intel_flip_work *work = intel_crtc->flip_work;
intel_crtc->flip_work = NULL;
if (work->event)
drm_crtc_send_vblank_event(&intel_crtc->base, work->event);
drm_crtc_vblank_put(&intel_crtc->base);
wake_up_all(&dev_priv->pending_flip_queue);
queue_work(dev_priv->wq, &work->unpin_work);
trace_i915_flip_complete(intel_crtc->plane,
work->pending_flip_obj);
}
static int intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
long ret;
WARN_ON(waitqueue_active(&dev_priv->pending_flip_queue));
ret = wait_event_interruptible_timeout(
dev_priv->pending_flip_queue,
!intel_crtc_has_pending_flip(crtc),
60*HZ);
if (ret < 0)
return ret;
if (ret == 0) {
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_flip_work *work;
spin_lock_irq(&dev->event_lock);
work = intel_crtc->flip_work;
if (work && !is_mmio_work(work)) {
WARN_ONCE(1, "Removing stuck page flip\n");
page_flip_completed(intel_crtc);
}
spin_unlock_irq(&dev->event_lock);
}
return 0;
}
void lpt_disable_iclkip(struct drm_i915_private *dev_priv)
{
u32 temp;
I915_WRITE(PIXCLK_GATE, PIXCLK_GATE_GATE);
mutex_lock(&dev_priv->sb_lock);
temp = intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK);
temp |= SBI_SSCCTL_DISABLE;
intel_sbi_write(dev_priv, SBI_SSCCTL6, temp, SBI_ICLK);
mutex_unlock(&dev_priv->sb_lock);
}
/* Program iCLKIP clock to the desired frequency */
static void lpt_program_iclkip(struct drm_crtc *crtc)
{
struct drm_i915_private *dev_priv = to_i915(crtc->dev);
int clock = to_intel_crtc(crtc)->config->base.adjusted_mode.crtc_clock;
u32 divsel, phaseinc, auxdiv, phasedir = 0;
u32 temp;
lpt_disable_iclkip(dev_priv);
/* The iCLK virtual clock root frequency is in MHz,
* but the adjusted_mode->crtc_clock in in KHz. To get the
* divisors, it is necessary to divide one by another, so we
* convert the virtual clock precision to KHz here for higher
* precision.
*/
for (auxdiv = 0; auxdiv < 2; auxdiv++) {
u32 iclk_virtual_root_freq = 172800 * 1000;
u32 iclk_pi_range = 64;
u32 desired_divisor;
desired_divisor = DIV_ROUND_CLOSEST(iclk_virtual_root_freq,
clock << auxdiv);
divsel = (desired_divisor / iclk_pi_range) - 2;
phaseinc = desired_divisor % iclk_pi_range;
/*
* Near 20MHz is a corner case which is
* out of range for the 7-bit divisor
*/
if (divsel <= 0x7f)
break;
}
/* This should not happen with any sane values */
WARN_ON(SBI_SSCDIVINTPHASE_DIVSEL(divsel) &
~SBI_SSCDIVINTPHASE_DIVSEL_MASK);
WARN_ON(SBI_SSCDIVINTPHASE_DIR(phasedir) &
~SBI_SSCDIVINTPHASE_INCVAL_MASK);
DRM_DEBUG_KMS("iCLKIP clock: found settings for %dKHz refresh rate: auxdiv=%x, divsel=%x, phasedir=%x, phaseinc=%x\n",
clock,
auxdiv,
divsel,
phasedir,
phaseinc);
mutex_lock(&dev_priv->sb_lock);
/* Program SSCDIVINTPHASE6 */
temp = intel_sbi_read(dev_priv, SBI_SSCDIVINTPHASE6, SBI_ICLK);
temp &= ~SBI_SSCDIVINTPHASE_DIVSEL_MASK;
temp |= SBI_SSCDIVINTPHASE_DIVSEL(divsel);
temp &= ~SBI_SSCDIVINTPHASE_INCVAL_MASK;
temp |= SBI_SSCDIVINTPHASE_INCVAL(phaseinc);
temp |= SBI_SSCDIVINTPHASE_DIR(phasedir);
temp |= SBI_SSCDIVINTPHASE_PROPAGATE;
intel_sbi_write(dev_priv, SBI_SSCDIVINTPHASE6, temp, SBI_ICLK);
/* Program SSCAUXDIV */
temp = intel_sbi_read(dev_priv, SBI_SSCAUXDIV6, SBI_ICLK);
temp &= ~SBI_SSCAUXDIV_FINALDIV2SEL(1);
temp |= SBI_SSCAUXDIV_FINALDIV2SEL(auxdiv);
intel_sbi_write(dev_priv, SBI_SSCAUXDIV6, temp, SBI_ICLK);
/* Enable modulator and associated divider */
temp = intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK);
temp &= ~SBI_SSCCTL_DISABLE;
intel_sbi_write(dev_priv, SBI_SSCCTL6, temp, SBI_ICLK);
mutex_unlock(&dev_priv->sb_lock);
/* Wait for initialization time */
udelay(24);
I915_WRITE(PIXCLK_GATE, PIXCLK_GATE_UNGATE);
}
int lpt_get_iclkip(struct drm_i915_private *dev_priv)
{
u32 divsel, phaseinc, auxdiv;
u32 iclk_virtual_root_freq = 172800 * 1000;
u32 iclk_pi_range = 64;
u32 desired_divisor;
u32 temp;
if ((I915_READ(PIXCLK_GATE) & PIXCLK_GATE_UNGATE) == 0)
return 0;
mutex_lock(&dev_priv->sb_lock);
temp = intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK);
if (temp & SBI_SSCCTL_DISABLE) {
mutex_unlock(&dev_priv->sb_lock);
return 0;
}
temp = intel_sbi_read(dev_priv, SBI_SSCDIVINTPHASE6, SBI_ICLK);
divsel = (temp & SBI_SSCDIVINTPHASE_DIVSEL_MASK) >>
SBI_SSCDIVINTPHASE_DIVSEL_SHIFT;
phaseinc = (temp & SBI_SSCDIVINTPHASE_INCVAL_MASK) >>
SBI_SSCDIVINTPHASE_INCVAL_SHIFT;
temp = intel_sbi_read(dev_priv, SBI_SSCAUXDIV6, SBI_ICLK);
auxdiv = (temp & SBI_SSCAUXDIV_FINALDIV2SEL_MASK) >>
SBI_SSCAUXDIV_FINALDIV2SEL_SHIFT;
mutex_unlock(&dev_priv->sb_lock);
desired_divisor = (divsel + 2) * iclk_pi_range + phaseinc;
return DIV_ROUND_CLOSEST(iclk_virtual_root_freq,
desired_divisor << auxdiv);
}
static void ironlake_pch_transcoder_set_timings(struct intel_crtc *crtc,
enum pipe pch_transcoder)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
I915_WRITE(PCH_TRANS_HTOTAL(pch_transcoder),
I915_READ(HTOTAL(cpu_transcoder)));
I915_WRITE(PCH_TRANS_HBLANK(pch_transcoder),
I915_READ(HBLANK(cpu_transcoder)));
I915_WRITE(PCH_TRANS_HSYNC(pch_transcoder),
I915_READ(HSYNC(cpu_transcoder)));
I915_WRITE(PCH_TRANS_VTOTAL(pch_transcoder),
I915_READ(VTOTAL(cpu_transcoder)));
I915_WRITE(PCH_TRANS_VBLANK(pch_transcoder),
I915_READ(VBLANK(cpu_transcoder)));
I915_WRITE(PCH_TRANS_VSYNC(pch_transcoder),
I915_READ(VSYNC(cpu_transcoder)));
I915_WRITE(PCH_TRANS_VSYNCSHIFT(pch_transcoder),
I915_READ(VSYNCSHIFT(cpu_transcoder)));
}
static void cpt_set_fdi_bc_bifurcation(struct drm_device *dev, bool enable)
{
struct drm_i915_private *dev_priv = to_i915(dev);
uint32_t temp;
temp = I915_READ(SOUTH_CHICKEN1);
if (!!(temp & FDI_BC_BIFURCATION_SELECT) == enable)
return;
WARN_ON(I915_READ(FDI_RX_CTL(PIPE_B)) & FDI_RX_ENABLE);
WARN_ON(I915_READ(FDI_RX_CTL(PIPE_C)) & FDI_RX_ENABLE);
temp &= ~FDI_BC_BIFURCATION_SELECT;
if (enable)
temp |= FDI_BC_BIFURCATION_SELECT;
DRM_DEBUG_KMS("%sabling fdi C rx\n", enable ? "en" : "dis");
I915_WRITE(SOUTH_CHICKEN1, temp);
POSTING_READ(SOUTH_CHICKEN1);
}
static void ivybridge_update_fdi_bc_bifurcation(struct intel_crtc *intel_crtc)
{
struct drm_device *dev = intel_crtc->base.dev;
switch (intel_crtc->pipe) {
case PIPE_A:
break;
case PIPE_B:
if (intel_crtc->config->fdi_lanes > 2)
cpt_set_fdi_bc_bifurcation(dev, false);
else
cpt_set_fdi_bc_bifurcation(dev, true);
break;
case PIPE_C:
cpt_set_fdi_bc_bifurcation(dev, true);
break;
default:
BUG();
}
}
/* Return which DP Port should be selected for Transcoder DP control */
static enum port
intel_trans_dp_port_sel(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct intel_encoder *encoder;
for_each_encoder_on_crtc(dev, crtc, encoder) {
if (encoder->type == INTEL_OUTPUT_DP ||
encoder->type == INTEL_OUTPUT_EDP)
return enc_to_dig_port(&encoder->base)->port;
}
return -1;
}
/*
* Enable PCH resources required for PCH ports:
* - PCH PLLs
* - FDI training & RX/TX
* - update transcoder timings
* - DP transcoding bits
* - transcoder
*/
static void ironlake_pch_enable(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
u32 temp;
assert_pch_transcoder_disabled(dev_priv, pipe);
if (IS_IVYBRIDGE(dev))
ivybridge_update_fdi_bc_bifurcation(intel_crtc);
/* Write the TU size bits before fdi link training, so that error
* detection works. */
I915_WRITE(FDI_RX_TUSIZE1(pipe),
I915_READ(PIPE_DATA_M1(pipe)) & TU_SIZE_MASK);
/* For PCH output, training FDI link */
dev_priv->display.fdi_link_train(crtc);
/* We need to program the right clock selection before writing the pixel
* mutliplier into the DPLL. */
if (HAS_PCH_CPT(dev)) {
u32 sel;
temp = I915_READ(PCH_DPLL_SEL);
temp |= TRANS_DPLL_ENABLE(pipe);
sel = TRANS_DPLLB_SEL(pipe);
if (intel_crtc->config->shared_dpll ==
intel_get_shared_dpll_by_id(dev_priv, DPLL_ID_PCH_PLL_B))
temp |= sel;
else
temp &= ~sel;
I915_WRITE(PCH_DPLL_SEL, temp);
}
/* XXX: pch pll's can be enabled any time before we enable the PCH
* transcoder, and we actually should do this to not upset any PCH
* transcoder that already use the clock when we share it.
*
* Note that enable_shared_dpll tries to do the right thing, but
* get_shared_dpll unconditionally resets the pll - we need that to have
* the right LVDS enable sequence. */
intel_enable_shared_dpll(intel_crtc);
/* set transcoder timing, panel must allow it */
assert_panel_unlocked(dev_priv, pipe);
ironlake_pch_transcoder_set_timings(intel_crtc, pipe);
intel_fdi_normal_train(crtc);
/* For PCH DP, enable TRANS_DP_CTL */
if (HAS_PCH_CPT(dev) && intel_crtc_has_dp_encoder(intel_crtc->config)) {
const struct drm_display_mode *adjusted_mode =
&intel_crtc->config->base.adjusted_mode;
u32 bpc = (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) >> 5;
i915_reg_t reg = TRANS_DP_CTL(pipe);
temp = I915_READ(reg);
temp &= ~(TRANS_DP_PORT_SEL_MASK |
TRANS_DP_SYNC_MASK |
TRANS_DP_BPC_MASK);
temp |= TRANS_DP_OUTPUT_ENABLE;
temp |= bpc << 9; /* same format but at 11:9 */
if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
temp |= TRANS_DP_HSYNC_ACTIVE_HIGH;
if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
temp |= TRANS_DP_VSYNC_ACTIVE_HIGH;
switch (intel_trans_dp_port_sel(crtc)) {
case PORT_B:
temp |= TRANS_DP_PORT_SEL_B;
break;
case PORT_C:
temp |= TRANS_DP_PORT_SEL_C;
break;
case PORT_D:
temp |= TRANS_DP_PORT_SEL_D;
break;
default:
BUG();
}
I915_WRITE(reg, temp);
}
ironlake_enable_pch_transcoder(dev_priv, pipe);
}
static void lpt_pch_enable(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
assert_pch_transcoder_disabled(dev_priv, TRANSCODER_A);
lpt_program_iclkip(crtc);
/* Set transcoder timing. */
ironlake_pch_transcoder_set_timings(intel_crtc, PIPE_A);
lpt_enable_pch_transcoder(dev_priv, cpu_transcoder);
}
static void cpt_verify_modeset(struct drm_device *dev, int pipe)
{
struct drm_i915_private *dev_priv = to_i915(dev);
i915_reg_t dslreg = PIPEDSL(pipe);
u32 temp;
temp = I915_READ(dslreg);
udelay(500);
if (wait_for(I915_READ(dslreg) != temp, 5)) {
if (wait_for(I915_READ(dslreg) != temp, 5))
DRM_ERROR("mode set failed: pipe %c stuck\n", pipe_name(pipe));
}
}
static int
skl_update_scaler(struct intel_crtc_state *crtc_state, bool force_detach,
unsigned scaler_user, int *scaler_id, unsigned int rotation,
int src_w, int src_h, int dst_w, int dst_h)
{
struct intel_crtc_scaler_state *scaler_state =
&crtc_state->scaler_state;
struct intel_crtc *intel_crtc =
to_intel_crtc(crtc_state->base.crtc);
int need_scaling;
need_scaling = intel_rotation_90_or_270(rotation) ?
(src_h != dst_w || src_w != dst_h):
(src_w != dst_w || src_h != dst_h);
/*
* if plane is being disabled or scaler is no more required or force detach
* - free scaler binded to this plane/crtc
* - in order to do this, update crtc->scaler_usage
*
* Here scaler state in crtc_state is set free so that
* scaler can be assigned to other user. Actual register
* update to free the scaler is done in plane/panel-fit programming.
* For this purpose crtc/plane_state->scaler_id isn't reset here.
*/
if (force_detach || !need_scaling) {
if (*scaler_id >= 0) {
scaler_state->scaler_users &= ~(1 << scaler_user);
scaler_state->scalers[*scaler_id].in_use = 0;
DRM_DEBUG_KMS("scaler_user index %u.%u: "
"Staged freeing scaler id %d scaler_users = 0x%x\n",
intel_crtc->pipe, scaler_user, *scaler_id,
scaler_state->scaler_users);
*scaler_id = -1;
}
return 0;
}
/* range checks */
if (src_w < SKL_MIN_SRC_W || src_h < SKL_MIN_SRC_H ||
dst_w < SKL_MIN_DST_W || dst_h < SKL_MIN_DST_H ||
src_w > SKL_MAX_SRC_W || src_h > SKL_MAX_SRC_H ||
dst_w > SKL_MAX_DST_W || dst_h > SKL_MAX_DST_H) {
DRM_DEBUG_KMS("scaler_user index %u.%u: src %ux%u dst %ux%u "
"size is out of scaler range\n",
intel_crtc->pipe, scaler_user, src_w, src_h, dst_w, dst_h);
return -EINVAL;
}
/* mark this plane as a scaler user in crtc_state */
scaler_state->scaler_users |= (1 << scaler_user);
DRM_DEBUG_KMS("scaler_user index %u.%u: "
"staged scaling request for %ux%u->%ux%u scaler_users = 0x%x\n",
intel_crtc->pipe, scaler_user, src_w, src_h, dst_w, dst_h,
scaler_state->scaler_users);
return 0;
}
/**
* skl_update_scaler_crtc - Stages update to scaler state for a given crtc.
*
* @state: crtc's scaler state
*
* Return
* 0 - scaler_usage updated successfully
* error - requested scaling cannot be supported or other error condition
*/
int skl_update_scaler_crtc(struct intel_crtc_state *state)
{
struct intel_crtc *intel_crtc = to_intel_crtc(state->base.crtc);
const struct drm_display_mode *adjusted_mode = &state->base.adjusted_mode;
DRM_DEBUG_KMS("Updating scaler for [CRTC:%d:%s] scaler_user index %u.%u\n",
intel_crtc->base.base.id, intel_crtc->base.name,
intel_crtc->pipe, SKL_CRTC_INDEX);
return skl_update_scaler(state, !state->base.active, SKL_CRTC_INDEX,
&state->scaler_state.scaler_id, DRM_ROTATE_0,
state->pipe_src_w, state->pipe_src_h,
adjusted_mode->crtc_hdisplay, adjusted_mode->crtc_vdisplay);
}
/**
* skl_update_scaler_plane - Stages update to scaler state for a given plane.
*
* @state: crtc's scaler state
* @plane_state: atomic plane state to update
*
* Return
* 0 - scaler_usage updated successfully
* error - requested scaling cannot be supported or other error condition
*/
static int skl_update_scaler_plane(struct intel_crtc_state *crtc_state,
struct intel_plane_state *plane_state)
{
struct intel_crtc *intel_crtc = to_intel_crtc(crtc_state->base.crtc);
struct intel_plane *intel_plane =
to_intel_plane(plane_state->base.plane);
struct drm_framebuffer *fb = plane_state->base.fb;
int ret;
bool force_detach = !fb || !plane_state->base.visible;
DRM_DEBUG_KMS("Updating scaler for [PLANE:%d:%s] scaler_user index %u.%u\n",
intel_plane->base.base.id, intel_plane->base.name,
intel_crtc->pipe, drm_plane_index(&intel_plane->base));
ret = skl_update_scaler(crtc_state, force_detach,
drm_plane_index(&intel_plane->base),
&plane_state->scaler_id,
plane_state->base.rotation,
drm_rect_width(&plane_state->base.src) >> 16,
drm_rect_height(&plane_state->base.src) >> 16,
drm_rect_width(&plane_state->base.dst),
drm_rect_height(&plane_state->base.dst));
if (ret || plane_state->scaler_id < 0)
return ret;
/* check colorkey */
if (plane_state->ckey.flags != I915_SET_COLORKEY_NONE) {
DRM_DEBUG_KMS("[PLANE:%d:%s] scaling with color key not allowed",
intel_plane->base.base.id,
intel_plane->base.name);
return -EINVAL;
}
/* Check src format */
switch (fb->pixel_format) {
case DRM_FORMAT_RGB565:
case DRM_FORMAT_XBGR8888:
case DRM_FORMAT_XRGB8888:
case DRM_FORMAT_ABGR8888:
case DRM_FORMAT_ARGB8888:
case DRM_FORMAT_XRGB2101010:
case DRM_FORMAT_XBGR2101010:
case DRM_FORMAT_YUYV:
case DRM_FORMAT_YVYU:
case DRM_FORMAT_UYVY:
case DRM_FORMAT_VYUY:
break;
default:
DRM_DEBUG_KMS("[PLANE:%d:%s] FB:%d unsupported scaling format 0x%x\n",
intel_plane->base.base.id, intel_plane->base.name,
fb->base.id, fb->pixel_format);
return -EINVAL;
}
return 0;
}
static void skylake_scaler_disable(struct intel_crtc *crtc)
{
int i;
for (i = 0; i < crtc->num_scalers; i++)
skl_detach_scaler(crtc, i);
}
static void skylake_pfit_enable(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
int pipe = crtc->pipe;
struct intel_crtc_scaler_state *scaler_state =
&crtc->config->scaler_state;
DRM_DEBUG_KMS("for crtc_state = %p\n", crtc->config);
if (crtc->config->pch_pfit.enabled) {
int id;
if (WARN_ON(crtc->config->scaler_state.scaler_id < 0)) {
DRM_ERROR("Requesting pfit without getting a scaler first\n");
return;
}
id = scaler_state->scaler_id;
I915_WRITE(SKL_PS_CTRL(pipe, id), PS_SCALER_EN |
PS_FILTER_MEDIUM | scaler_state->scalers[id].mode);
I915_WRITE(SKL_PS_WIN_POS(pipe, id), crtc->config->pch_pfit.pos);
I915_WRITE(SKL_PS_WIN_SZ(pipe, id), crtc->config->pch_pfit.size);
DRM_DEBUG_KMS("for crtc_state = %p scaler_id = %d\n", crtc->config, id);
}
}
static void ironlake_pfit_enable(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
int pipe = crtc->pipe;
if (crtc->config->pch_pfit.enabled) {
/* Force use of hard-coded filter coefficients
* as some pre-programmed values are broken,
* e.g. x201.
*/
if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev))
I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3 |
PF_PIPE_SEL_IVB(pipe));
else
I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3);
I915_WRITE(PF_WIN_POS(pipe), crtc->config->pch_pfit.pos);
I915_WRITE(PF_WIN_SZ(pipe), crtc->config->pch_pfit.size);
}
}
void hsw_enable_ips(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
if (!crtc->config->ips_enabled)
return;
/*
* We can only enable IPS after we enable a plane and wait for a vblank
* This function is called from post_plane_update, which is run after
* a vblank wait.
*/
assert_plane_enabled(dev_priv, crtc->plane);
if (IS_BROADWELL(dev)) {
mutex_lock(&dev_priv->rps.hw_lock);
WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0xc0000000));
mutex_unlock(&dev_priv->rps.hw_lock);
/* Quoting Art Runyan: "its not safe to expect any particular
* value in IPS_CTL bit 31 after enabling IPS through the
* mailbox." Moreover, the mailbox may return a bogus state,
* so we need to just enable it and continue on.
*/
} else {
I915_WRITE(IPS_CTL, IPS_ENABLE);
/* The bit only becomes 1 in the next vblank, so this wait here
* is essentially intel_wait_for_vblank. If we don't have this
* and don't wait for vblanks until the end of crtc_enable, then
* the HW state readout code will complain that the expected
* IPS_CTL value is not the one we read. */
if (intel_wait_for_register(dev_priv,
IPS_CTL, IPS_ENABLE, IPS_ENABLE,
50))
DRM_ERROR("Timed out waiting for IPS enable\n");
}
}
void hsw_disable_ips(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
if (!crtc->config->ips_enabled)
return;
assert_plane_enabled(dev_priv, crtc->plane);
if (IS_BROADWELL(dev)) {
mutex_lock(&dev_priv->rps.hw_lock);
WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0));
mutex_unlock(&dev_priv->rps.hw_lock);
/* wait for pcode to finish disabling IPS, which may take up to 42ms */
if (intel_wait_for_register(dev_priv,
IPS_CTL, IPS_ENABLE, 0,
42))
DRM_ERROR("Timed out waiting for IPS disable\n");
} else {
I915_WRITE(IPS_CTL, 0);
POSTING_READ(IPS_CTL);
}
/* We need to wait for a vblank before we can disable the plane. */
intel_wait_for_vblank(dev, crtc->pipe);
}
static void intel_crtc_dpms_overlay_disable(struct intel_crtc *intel_crtc)
{
if (intel_crtc->overlay) {
struct drm_device *dev = intel_crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
mutex_lock(&dev->struct_mutex);
dev_priv->mm.interruptible = false;
(void) intel_overlay_switch_off(intel_crtc->overlay);
dev_priv->mm.interruptible = true;
mutex_unlock(&dev->struct_mutex);
}
/* Let userspace switch the overlay on again. In most cases userspace
* has to recompute where to put it anyway.
*/
}
/**
* intel_post_enable_primary - Perform operations after enabling primary plane
* @crtc: the CRTC whose primary plane was just enabled
*
* Performs potentially sleeping operations that must be done after the primary
* plane is enabled, such as updating FBC and IPS. Note that this may be
* called due to an explicit primary plane update, or due to an implicit
* re-enable that is caused when a sprite plane is updated to no longer
* completely hide the primary plane.
*/
static void
intel_post_enable_primary(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
/*
* FIXME IPS should be fine as long as one plane is
* enabled, but in practice it seems to have problems
* when going from primary only to sprite only and vice
* versa.
*/
hsw_enable_ips(intel_crtc);
/*
* Gen2 reports pipe underruns whenever all planes are disabled.
* So don't enable underrun reporting before at least some planes
* are enabled.
* FIXME: Need to fix the logic to work when we turn off all planes
* but leave the pipe running.
*/
if (IS_GEN2(dev))
intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
/* Underruns don't always raise interrupts, so check manually. */
intel_check_cpu_fifo_underruns(dev_priv);
intel_check_pch_fifo_underruns(dev_priv);
}
/* FIXME move all this to pre_plane_update() with proper state tracking */
static void
intel_pre_disable_primary(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
/*
* Gen2 reports pipe underruns whenever all planes are disabled.
* So diasble underrun reporting before all the planes get disabled.
* FIXME: Need to fix the logic to work when we turn off all planes
* but leave the pipe running.
*/
if (IS_GEN2(dev))
intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
/*
* FIXME IPS should be fine as long as one plane is
* enabled, but in practice it seems to have problems
* when going from primary only to sprite only and vice
* versa.
*/
hsw_disable_ips(intel_crtc);
}
/* FIXME get rid of this and use pre_plane_update */
static void
intel_pre_disable_primary_noatomic(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
intel_pre_disable_primary(crtc);
/*
* Vblank time updates from the shadow to live plane control register
* are blocked if the memory self-refresh mode is active at that
* moment. So to make sure the plane gets truly disabled, disable
* first the self-refresh mode. The self-refresh enable bit in turn
* will be checked/applied by the HW only at the next frame start
* event which is after the vblank start event, so we need to have a
* wait-for-vblank between disabling the plane and the pipe.
*/
if (HAS_GMCH_DISPLAY(dev)) {
intel_set_memory_cxsr(dev_priv, false);
dev_priv->wm.vlv.cxsr = false;
intel_wait_for_vblank(dev, pipe);
}
}
static void intel_post_plane_update(struct intel_crtc_state *old_crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->base.crtc);
struct drm_atomic_state *old_state = old_crtc_state->base.state;
struct intel_crtc_state *pipe_config =
to_intel_crtc_state(crtc->base.state);
struct drm_plane *primary = crtc->base.primary;
struct drm_plane_state *old_pri_state =
drm_atomic_get_existing_plane_state(old_state, primary);
intel_frontbuffer_flip(to_i915(crtc->base.dev), pipe_config->fb_bits);
crtc->wm.cxsr_allowed = true;
if (pipe_config->update_wm_post && pipe_config->base.active)
intel_update_watermarks(&crtc->base);
if (old_pri_state) {
struct intel_plane_state *primary_state =
to_intel_plane_state(primary->state);
struct intel_plane_state *old_primary_state =
to_intel_plane_state(old_pri_state);
intel_fbc_post_update(crtc);
if (primary_state->base.visible &&
(needs_modeset(&pipe_config->base) ||
!old_primary_state->base.visible))
intel_post_enable_primary(&crtc->base);
}
}
static void intel_pre_plane_update(struct intel_crtc_state *old_crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->base.crtc);
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc_state *pipe_config =
to_intel_crtc_state(crtc->base.state);
struct drm_atomic_state *old_state = old_crtc_state->base.state;
struct drm_plane *primary = crtc->base.primary;
struct drm_plane_state *old_pri_state =
drm_atomic_get_existing_plane_state(old_state, primary);
bool modeset = needs_modeset(&pipe_config->base);
if (old_pri_state) {
struct intel_plane_state *primary_state =
to_intel_plane_state(primary->state);
struct intel_plane_state *old_primary_state =
to_intel_plane_state(old_pri_state);
intel_fbc_pre_update(crtc, pipe_config, primary_state);
if (old_primary_state->base.visible &&
(modeset || !primary_state->base.visible))
intel_pre_disable_primary(&crtc->base);
}
if (pipe_config->disable_cxsr && HAS_GMCH_DISPLAY(dev)) {
crtc->wm.cxsr_allowed = false;
/*
* Vblank time updates from the shadow to live plane control register
* are blocked if the memory self-refresh mode is active at that
* moment. So to make sure the plane gets truly disabled, disable
* first the self-refresh mode. The self-refresh enable bit in turn
* will be checked/applied by the HW only at the next frame start
* event which is after the vblank start event, so we need to have a
* wait-for-vblank between disabling the plane and the pipe.
*/
if (old_crtc_state->base.active) {
intel_set_memory_cxsr(dev_priv, false);
dev_priv->wm.vlv.cxsr = false;
intel_wait_for_vblank(dev, crtc->pipe);
}
}
/*
* IVB workaround: must disable low power watermarks for at least
* one frame before enabling scaling. LP watermarks can be re-enabled
* when scaling is disabled.
*
* WaCxSRDisabledForSpriteScaling:ivb
*/
if (pipe_config->disable_lp_wm) {
ilk_disable_lp_wm(dev);
intel_wait_for_vblank(dev, crtc->pipe);
}
/*
* If we're doing a modeset, we're done. No need to do any pre-vblank
* watermark programming here.
*/
if (needs_modeset(&pipe_config->base))
return;
/*
* For platforms that support atomic watermarks, program the
* 'intermediate' watermarks immediately. On pre-gen9 platforms, these
* will be the intermediate values that are safe for both pre- and
* post- vblank; when vblank happens, the 'active' values will be set
* to the final 'target' values and we'll do this again to get the
* optimal watermarks. For gen9+ platforms, the values we program here
* will be the final target values which will get automatically latched
* at vblank time; no further programming will be necessary.
*
* If a platform hasn't been transitioned to atomic watermarks yet,
* we'll continue to update watermarks the old way, if flags tell
* us to.
*/
if (dev_priv->display.initial_watermarks != NULL)
dev_priv->display.initial_watermarks(pipe_config);
else if (pipe_config->update_wm_pre)
intel_update_watermarks(&crtc->base);
}
static void intel_crtc_disable_planes(struct drm_crtc *crtc, unsigned plane_mask)
{
struct drm_device *dev = crtc->dev;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct drm_plane *p;
int pipe = intel_crtc->pipe;
intel_crtc_dpms_overlay_disable(intel_crtc);
drm_for_each_plane_mask(p, dev, plane_mask)
to_intel_plane(p)->disable_plane(p, crtc);
/*
* FIXME: Once we grow proper nuclear flip support out of this we need
* to compute the mask of flip planes precisely. For the time being
* consider this a flip to a NULL plane.
*/
intel_frontbuffer_flip(to_i915(dev), INTEL_FRONTBUFFER_ALL_MASK(pipe));
}
static void intel_encoders_pre_pll_enable(struct drm_crtc *crtc,
struct intel_crtc_state *crtc_state,
struct drm_atomic_state *old_state)
{
struct drm_connector_state *old_conn_state;
struct drm_connector *conn;
int i;
for_each_connector_in_state(old_state, conn, old_conn_state, i) {
struct drm_connector_state *conn_state = conn->state;
struct intel_encoder *encoder =
to_intel_encoder(conn_state->best_encoder);
if (conn_state->crtc != crtc)
continue;
if (encoder->pre_pll_enable)
encoder->pre_pll_enable(encoder, crtc_state, conn_state);
}
}
static void intel_encoders_pre_enable(struct drm_crtc *crtc,
struct intel_crtc_state *crtc_state,
struct drm_atomic_state *old_state)
{
struct drm_connector_state *old_conn_state;
struct drm_connector *conn;
int i;
for_each_connector_in_state(old_state, conn, old_conn_state, i) {
struct drm_connector_state *conn_state = conn->state;
struct intel_encoder *encoder =
to_intel_encoder(conn_state->best_encoder);
if (conn_state->crtc != crtc)
continue;
if (encoder->pre_enable)
encoder->pre_enable(encoder, crtc_state, conn_state);
}
}
static void intel_encoders_enable(struct drm_crtc *crtc,
struct intel_crtc_state *crtc_state,
struct drm_atomic_state *old_state)
{
struct drm_connector_state *old_conn_state;
struct drm_connector *conn;
int i;
for_each_connector_in_state(old_state, conn, old_conn_state, i) {
struct drm_connector_state *conn_state = conn->state;
struct intel_encoder *encoder =
to_intel_encoder(conn_state->best_encoder);
if (conn_state->crtc != crtc)
continue;
encoder->enable(encoder, crtc_state, conn_state);
intel_opregion_notify_encoder(encoder, true);
}
}
static void intel_encoders_disable(struct drm_crtc *crtc,
struct intel_crtc_state *old_crtc_state,
struct drm_atomic_state *old_state)
{
struct drm_connector_state *old_conn_state;
struct drm_connector *conn;
int i;
for_each_connector_in_state(old_state, conn, old_conn_state, i) {
struct intel_encoder *encoder =
to_intel_encoder(old_conn_state->best_encoder);
if (old_conn_state->crtc != crtc)
continue;
intel_opregion_notify_encoder(encoder, false);
encoder->disable(encoder, old_crtc_state, old_conn_state);
}
}
static void intel_encoders_post_disable(struct drm_crtc *crtc,
struct intel_crtc_state *old_crtc_state,
struct drm_atomic_state *old_state)
{
struct drm_connector_state *old_conn_state;
struct drm_connector *conn;
int i;
for_each_connector_in_state(old_state, conn, old_conn_state, i) {
struct intel_encoder *encoder =
to_intel_encoder(old_conn_state->best_encoder);
if (old_conn_state->crtc != crtc)
continue;
if (encoder->post_disable)
encoder->post_disable(encoder, old_crtc_state, old_conn_state);
}
}
static void intel_encoders_post_pll_disable(struct drm_crtc *crtc,
struct intel_crtc_state *old_crtc_state,
struct drm_atomic_state *old_state)
{
struct drm_connector_state *old_conn_state;
struct drm_connector *conn;
int i;
for_each_connector_in_state(old_state, conn, old_conn_state, i) {
struct intel_encoder *encoder =
to_intel_encoder(old_conn_state->best_encoder);
if (old_conn_state->crtc != crtc)
continue;
if (encoder->post_pll_disable)
encoder->post_pll_disable(encoder, old_crtc_state, old_conn_state);
}
}
static void ironlake_crtc_enable(struct intel_crtc_state *pipe_config,
struct drm_atomic_state *old_state)
{
struct drm_crtc *crtc = pipe_config->base.crtc;
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
if (WARN_ON(intel_crtc->active))
return;
/*
* Sometimes spurious CPU pipe underruns happen during FDI
* training, at least with VGA+HDMI cloning. Suppress them.
*
* On ILK we get an occasional spurious CPU pipe underruns
* between eDP port A enable and vdd enable. Also PCH port
* enable seems to result in the occasional CPU pipe underrun.
*
* Spurious PCH underruns also occur during PCH enabling.
*/
if (intel_crtc->config->has_pch_encoder || IS_GEN5(dev_priv))
intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
if (intel_crtc->config->has_pch_encoder)
intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, false);
if (intel_crtc->config->has_pch_encoder)
intel_prepare_shared_dpll(intel_crtc);
if (intel_crtc_has_dp_encoder(intel_crtc->config))
intel_dp_set_m_n(intel_crtc, M1_N1);
intel_set_pipe_timings(intel_crtc);
intel_set_pipe_src_size(intel_crtc);
if (intel_crtc->config->has_pch_encoder) {
intel_cpu_transcoder_set_m_n(intel_crtc,
&intel_crtc->config->fdi_m_n, NULL);
}
ironlake_set_pipeconf(crtc);
intel_crtc->active = true;
intel_encoders_pre_enable(crtc, pipe_config, old_state);
if (intel_crtc->config->has_pch_encoder) {
/* Note: FDI PLL enabling _must_ be done before we enable the
* cpu pipes, hence this is separate from all the other fdi/pch
* enabling. */
ironlake_fdi_pll_enable(intel_crtc);
} else {
assert_fdi_tx_disabled(dev_priv, pipe);
assert_fdi_rx_disabled(dev_priv, pipe);
}
ironlake_pfit_enable(intel_crtc);
/*
* On ILK+ LUT must be loaded before the pipe is running but with
* clocks enabled
*/
intel_color_load_luts(&pipe_config->base);
if (dev_priv->display.initial_watermarks != NULL)
dev_priv->display.initial_watermarks(intel_crtc->config);
intel_enable_pipe(intel_crtc);
if (intel_crtc->config->has_pch_encoder)
ironlake_pch_enable(crtc);
assert_vblank_disabled(crtc);
drm_crtc_vblank_on(crtc);
intel_encoders_enable(crtc, pipe_config, old_state);
if (HAS_PCH_CPT(dev))
cpt_verify_modeset(dev, intel_crtc->pipe);
/* Must wait for vblank to avoid spurious PCH FIFO underruns */
if (intel_crtc->config->has_pch_encoder)
intel_wait_for_vblank(dev, pipe);
intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, true);
}
/* IPS only exists on ULT machines and is tied to pipe A. */
static bool hsw_crtc_supports_ips(struct intel_crtc *crtc)
{
return HAS_IPS(crtc->base.dev) && crtc->pipe == PIPE_A;
}
static void haswell_crtc_enable(struct intel_crtc_state *pipe_config,
struct drm_atomic_state *old_state)
{
struct drm_crtc *crtc = pipe_config->base.crtc;
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe, hsw_workaround_pipe;
enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
if (WARN_ON(intel_crtc->active))
return;
if (intel_crtc->config->has_pch_encoder)
intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
false);
intel_encoders_pre_pll_enable(crtc, pipe_config, old_state);
if (intel_crtc->config->shared_dpll)
intel_enable_shared_dpll(intel_crtc);
if (intel_crtc_has_dp_encoder(intel_crtc->config))
intel_dp_set_m_n(intel_crtc, M1_N1);
if (!transcoder_is_dsi(cpu_transcoder))
intel_set_pipe_timings(intel_crtc);
intel_set_pipe_src_size(intel_crtc);
if (cpu_transcoder != TRANSCODER_EDP &&
!transcoder_is_dsi(cpu_transcoder)) {
I915_WRITE(PIPE_MULT(cpu_transcoder),
intel_crtc->config->pixel_multiplier - 1);
}
if (intel_crtc->config->has_pch_encoder) {
intel_cpu_transcoder_set_m_n(intel_crtc,
&intel_crtc->config->fdi_m_n, NULL);
}
if (!transcoder_is_dsi(cpu_transcoder))
haswell_set_pipeconf(crtc);
haswell_set_pipemisc(crtc);
intel_color_set_csc(&pipe_config->base);
intel_crtc->active = true;
if (intel_crtc->config->has_pch_encoder)
intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
else
intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
intel_encoders_pre_enable(crtc, pipe_config, old_state);
if (intel_crtc->config->has_pch_encoder)
dev_priv->display.fdi_link_train(crtc);
if (!transcoder_is_dsi(cpu_transcoder))
intel_ddi_enable_pipe_clock(intel_crtc);
if (INTEL_INFO(dev)->gen >= 9)
skylake_pfit_enable(intel_crtc);
else
ironlake_pfit_enable(intel_crtc);
/*
* On ILK+ LUT must be loaded before the pipe is running but with
* clocks enabled
*/
intel_color_load_luts(&pipe_config->base);
intel_ddi_set_pipe_settings(crtc);
if (!transcoder_is_dsi(cpu_transcoder))
intel_ddi_enable_transcoder_func(crtc);
if (dev_priv->display.initial_watermarks != NULL)
dev_priv->display.initial_watermarks(pipe_config);
else
intel_update_watermarks(crtc);
/* XXX: Do the pipe assertions at the right place for BXT DSI. */
if (!transcoder_is_dsi(cpu_transcoder))
intel_enable_pipe(intel_crtc);
if (intel_crtc->config->has_pch_encoder)
lpt_pch_enable(crtc);
if (intel_crtc->config->dp_encoder_is_mst)
intel_ddi_set_vc_payload_alloc(crtc, true);
assert_vblank_disabled(crtc);
drm_crtc_vblank_on(crtc);
intel_encoders_enable(crtc, pipe_config, old_state);
if (intel_crtc->config->has_pch_encoder) {
intel_wait_for_vblank(dev, pipe);
intel_wait_for_vblank(dev, pipe);
intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
true);
}
/* If we change the relative order between pipe/planes enabling, we need
* to change the workaround. */
hsw_workaround_pipe = pipe_config->hsw_workaround_pipe;
if (IS_HASWELL(dev) && hsw_workaround_pipe != INVALID_PIPE) {
intel_wait_for_vblank(dev, hsw_workaround_pipe);
intel_wait_for_vblank(dev, hsw_workaround_pipe);
}
}
static void ironlake_pfit_disable(struct intel_crtc *crtc, bool force)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
int pipe = crtc->pipe;
/* To avoid upsetting the power well on haswell only disable the pfit if
* it's in use. The hw state code will make sure we get this right. */
if (force || crtc->config->pch_pfit.enabled) {
I915_WRITE(PF_CTL(pipe), 0);
I915_WRITE(PF_WIN_POS(pipe), 0);
I915_WRITE(PF_WIN_SZ(pipe), 0);
}
}
static void ironlake_crtc_disable(struct intel_crtc_state *old_crtc_state,
struct drm_atomic_state *old_state)
{
struct drm_crtc *crtc = old_crtc_state->base.crtc;
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
/*
* Sometimes spurious CPU pipe underruns happen when the
* pipe is already disabled, but FDI RX/TX is still enabled.
* Happens at least with VGA+HDMI cloning. Suppress them.
*/
if (intel_crtc->config->has_pch_encoder) {
intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, false);
}
intel_encoders_disable(crtc, old_crtc_state, old_state);
drm_crtc_vblank_off(crtc);
assert_vblank_disabled(crtc);
intel_disable_pipe(intel_crtc);
ironlake_pfit_disable(intel_crtc, false);
if (intel_crtc->config->has_pch_encoder)
ironlake_fdi_disable(crtc);
intel_encoders_post_disable(crtc, old_crtc_state, old_state);
if (intel_crtc->config->has_pch_encoder) {
ironlake_disable_pch_transcoder(dev_priv, pipe);
if (HAS_PCH_CPT(dev)) {
i915_reg_t reg;
u32 temp;
/* disable TRANS_DP_CTL */
reg = TRANS_DP_CTL(pipe);
temp = I915_READ(reg);
temp &= ~(TRANS_DP_OUTPUT_ENABLE |
TRANS_DP_PORT_SEL_MASK);
temp |= TRANS_DP_PORT_SEL_NONE;
I915_WRITE(reg, temp);
/* disable DPLL_SEL */
temp = I915_READ(PCH_DPLL_SEL);
temp &= ~(TRANS_DPLL_ENABLE(pipe) | TRANS_DPLLB_SEL(pipe));
I915_WRITE(PCH_DPLL_SEL, temp);
}
ironlake_fdi_pll_disable(intel_crtc);
}
intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, true);
}
static void haswell_crtc_disable(struct intel_crtc_state *old_crtc_state,
struct drm_atomic_state *old_state)
{
struct drm_crtc *crtc = old_crtc_state->base.crtc;
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
if (intel_crtc->config->has_pch_encoder)
intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
false);
intel_encoders_disable(crtc, old_crtc_state, old_state);
drm_crtc_vblank_off(crtc);
assert_vblank_disabled(crtc);
/* XXX: Do the pipe assertions at the right place for BXT DSI. */
if (!transcoder_is_dsi(cpu_transcoder))
intel_disable_pipe(intel_crtc);
if (intel_crtc->config->dp_encoder_is_mst)
intel_ddi_set_vc_payload_alloc(crtc, false);
if (!transcoder_is_dsi(cpu_transcoder))
intel_ddi_disable_transcoder_func(dev_priv, cpu_transcoder);
if (INTEL_INFO(dev)->gen >= 9)
skylake_scaler_disable(intel_crtc);
else
ironlake_pfit_disable(intel_crtc, false);
if (!transcoder_is_dsi(cpu_transcoder))
intel_ddi_disable_pipe_clock(intel_crtc);
intel_encoders_post_disable(crtc, old_crtc_state, old_state);
if (old_crtc_state->has_pch_encoder)
intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
true);
}
static void i9xx_pfit_enable(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc_state *pipe_config = crtc->config;
if (!pipe_config->gmch_pfit.control)
return;
/*
* The panel fitter should only be adjusted whilst the pipe is disabled,
* according to register description and PRM.
*/
WARN_ON(I915_READ(PFIT_CONTROL) & PFIT_ENABLE);
assert_pipe_disabled(dev_priv, crtc->pipe);
I915_WRITE(PFIT_PGM_RATIOS, pipe_config->gmch_pfit.pgm_ratios);
I915_WRITE(PFIT_CONTROL, pipe_config->gmch_pfit.control);
/* Border color in case we don't scale up to the full screen. Black by
* default, change to something else for debugging. */
I915_WRITE(BCLRPAT(crtc->pipe), 0);
}
static enum intel_display_power_domain port_to_power_domain(enum port port)
{
switch (port) {
case PORT_A:
return POWER_DOMAIN_PORT_DDI_A_LANES;
case PORT_B:
return POWER_DOMAIN_PORT_DDI_B_LANES;
case PORT_C:
return POWER_DOMAIN_PORT_DDI_C_LANES;
case PORT_D:
return POWER_DOMAIN_PORT_DDI_D_LANES;
case PORT_E:
return POWER_DOMAIN_PORT_DDI_E_LANES;
default:
MISSING_CASE(port);
return POWER_DOMAIN_PORT_OTHER;
}
}
static enum intel_display_power_domain port_to_aux_power_domain(enum port port)
{
switch (port) {
case PORT_A:
return POWER_DOMAIN_AUX_A;
case PORT_B:
return POWER_DOMAIN_AUX_B;
case PORT_C:
return POWER_DOMAIN_AUX_C;
case PORT_D:
return POWER_DOMAIN_AUX_D;
case PORT_E:
/* FIXME: Check VBT for actual wiring of PORT E */
return POWER_DOMAIN_AUX_D;
default:
MISSING_CASE(port);
return POWER_DOMAIN_AUX_A;
}
}
enum intel_display_power_domain
intel_display_port_power_domain(struct intel_encoder *intel_encoder)
{
struct drm_device *dev = intel_encoder->base.dev;
struct intel_digital_port *intel_dig_port;
switch (intel_encoder->type) {
case INTEL_OUTPUT_UNKNOWN:
/* Only DDI platforms should ever use this output type */
WARN_ON_ONCE(!HAS_DDI(dev));
case INTEL_OUTPUT_DP:
case INTEL_OUTPUT_HDMI:
case INTEL_OUTPUT_EDP:
intel_dig_port = enc_to_dig_port(&intel_encoder->base);
return port_to_power_domain(intel_dig_port->port);
case INTEL_OUTPUT_DP_MST:
intel_dig_port = enc_to_mst(&intel_encoder->base)->primary;
return port_to_power_domain(intel_dig_port->port);
case INTEL_OUTPUT_ANALOG:
return POWER_DOMAIN_PORT_CRT;
case INTEL_OUTPUT_DSI:
return POWER_DOMAIN_PORT_DSI;
default:
return POWER_DOMAIN_PORT_OTHER;
}
}
enum intel_display_power_domain
intel_display_port_aux_power_domain(struct intel_encoder *intel_encoder)
{
struct drm_device *dev = intel_encoder->base.dev;
struct intel_digital_port *intel_dig_port;
switch (intel_encoder->type) {
case INTEL_OUTPUT_UNKNOWN:
case INTEL_OUTPUT_HDMI:
/*
* Only DDI platforms should ever use these output types.
* We can get here after the HDMI detect code has already set
* the type of the shared encoder. Since we can't be sure
* what's the status of the given connectors, play safe and
* run the DP detection too.
*/
WARN_ON_ONCE(!HAS_DDI(dev));
case INTEL_OUTPUT_DP:
case INTEL_OUTPUT_EDP:
intel_dig_port = enc_to_dig_port(&intel_encoder->base);
return port_to_aux_power_domain(intel_dig_port->port);
case INTEL_OUTPUT_DP_MST:
intel_dig_port = enc_to_mst(&intel_encoder->base)->primary;
return port_to_aux_power_domain(intel_dig_port->port);
default:
MISSING_CASE(intel_encoder->type);
return POWER_DOMAIN_AUX_A;
}
}
static unsigned long get_crtc_power_domains(struct drm_crtc *crtc,
struct intel_crtc_state *crtc_state)
{
struct drm_device *dev = crtc->dev;
struct drm_encoder *encoder;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
enum pipe pipe = intel_crtc->pipe;
unsigned long mask;
enum transcoder transcoder = crtc_state->cpu_transcoder;
if (!crtc_state->base.active)
return 0;
mask = BIT(POWER_DOMAIN_PIPE(pipe));
mask |= BIT(POWER_DOMAIN_TRANSCODER(transcoder));
if (crtc_state->pch_pfit.enabled ||
crtc_state->pch_pfit.force_thru)
mask |= BIT(POWER_DOMAIN_PIPE_PANEL_FITTER(pipe));
drm_for_each_encoder_mask(encoder, dev, crtc_state->base.encoder_mask) {
struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
mask |= BIT(intel_display_port_power_domain(intel_encoder));
}
if (crtc_state->shared_dpll)
mask |= BIT(POWER_DOMAIN_PLLS);
return mask;
}
static unsigned long
modeset_get_crtc_power_domains(struct drm_crtc *crtc,
struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(crtc->dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
enum intel_display_power_domain domain;
unsigned long domains, new_domains, old_domains;
old_domains = intel_crtc->enabled_power_domains;
intel_crtc->enabled_power_domains = new_domains =
get_crtc_power_domains(crtc, crtc_state);
domains = new_domains & ~old_domains;
for_each_power_domain(domain, domains)
intel_display_power_get(dev_priv, domain);
return old_domains & ~new_domains;
}
static void modeset_put_power_domains(struct drm_i915_private *dev_priv,
unsigned long domains)
{
enum intel_display_power_domain domain;
for_each_power_domain(domain, domains)
intel_display_power_put(dev_priv, domain);
}
static int intel_compute_max_dotclk(struct drm_i915_private *dev_priv)
{
int max_cdclk_freq = dev_priv->max_cdclk_freq;
if (INTEL_INFO(dev_priv)->gen >= 9 ||
IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
return max_cdclk_freq;
else if (IS_CHERRYVIEW(dev_priv))
return max_cdclk_freq*95/100;
else if (INTEL_INFO(dev_priv)->gen < 4)
return 2*max_cdclk_freq*90/100;
else
return max_cdclk_freq*90/100;
}
static int skl_calc_cdclk(int max_pixclk, int vco);
static void intel_update_max_cdclk(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) {
u32 limit = I915_READ(SKL_DFSM) & SKL_DFSM_CDCLK_LIMIT_MASK;
int max_cdclk, vco;
vco = dev_priv->skl_preferred_vco_freq;
WARN_ON(vco != 8100000 && vco != 8640000);
/*
* Use the lower (vco 8640) cdclk values as a
* first guess. skl_calc_cdclk() will correct it
* if the preferred vco is 8100 instead.
*/
if (limit == SKL_DFSM_CDCLK_LIMIT_675)
max_cdclk = 617143;
else if (limit == SKL_DFSM_CDCLK_LIMIT_540)
max_cdclk = 540000;
else if (limit == SKL_DFSM_CDCLK_LIMIT_450)
max_cdclk = 432000;
else
max_cdclk = 308571;
dev_priv->max_cdclk_freq = skl_calc_cdclk(max_cdclk, vco);
} else if (IS_BROXTON(dev)) {
dev_priv->max_cdclk_freq = 624000;
} else if (IS_BROADWELL(dev)) {
/*
* FIXME with extra cooling we can allow
* 540 MHz for ULX and 675 Mhz for ULT.
* How can we know if extra cooling is
* available? PCI ID, VTB, something else?
*/
if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT)
dev_priv->max_cdclk_freq = 450000;
else if (IS_BDW_ULX(dev))
dev_priv->max_cdclk_freq = 450000;
else if (IS_BDW_ULT(dev))
dev_priv->max_cdclk_freq = 540000;
else
dev_priv->max_cdclk_freq = 675000;
} else if (IS_CHERRYVIEW(dev)) {
dev_priv->max_cdclk_freq = 320000;
} else if (IS_VALLEYVIEW(dev)) {
dev_priv->max_cdclk_freq = 400000;
} else {
/* otherwise assume cdclk is fixed */
dev_priv->max_cdclk_freq = dev_priv->cdclk_freq;
}
dev_priv->max_dotclk_freq = intel_compute_max_dotclk(dev_priv);
DRM_DEBUG_DRIVER("Max CD clock rate: %d kHz\n",
dev_priv->max_cdclk_freq);
DRM_DEBUG_DRIVER("Max dotclock rate: %d kHz\n",
dev_priv->max_dotclk_freq);
}
static void intel_update_cdclk(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
dev_priv->cdclk_freq = dev_priv->display.get_display_clock_speed(dev);
if (INTEL_GEN(dev_priv) >= 9)
DRM_DEBUG_DRIVER("Current CD clock rate: %d kHz, VCO: %d kHz, ref: %d kHz\n",
dev_priv->cdclk_freq, dev_priv->cdclk_pll.vco,
dev_priv->cdclk_pll.ref);
else
DRM_DEBUG_DRIVER("Current CD clock rate: %d kHz\n",
dev_priv->cdclk_freq);
/*
* 9:0 CMBUS [sic] CDCLK frequency (cdfreq):
* Programmng [sic] note: bit[9:2] should be programmed to the number
* of cdclk that generates 4MHz reference clock freq which is used to
* generate GMBus clock. This will vary with the cdclk freq.
*/
if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
I915_WRITE(GMBUSFREQ_VLV, DIV_ROUND_UP(dev_priv->cdclk_freq, 1000));
}
/* convert from kHz to .1 fixpoint MHz with -1MHz offset */
static int skl_cdclk_decimal(int cdclk)
{
return DIV_ROUND_CLOSEST(cdclk - 1000, 500);
}
static int bxt_de_pll_vco(struct drm_i915_private *dev_priv, int cdclk)
{
int ratio;
if (cdclk == dev_priv->cdclk_pll.ref)
return 0;
switch (cdclk) {
default:
MISSING_CASE(cdclk);
case 144000:
case 288000:
case 384000:
case 576000:
ratio = 60;
break;
case 624000:
ratio = 65;
break;
}
return dev_priv->cdclk_pll.ref * ratio;
}
static void bxt_de_pll_disable(struct drm_i915_private *dev_priv)
{
I915_WRITE(BXT_DE_PLL_ENABLE, 0);
/* Timeout 200us */
if (intel_wait_for_register(dev_priv,
BXT_DE_PLL_ENABLE, BXT_DE_PLL_LOCK, 0,
1))
DRM_ERROR("timeout waiting for DE PLL unlock\n");
dev_priv->cdclk_pll.vco = 0;
}
static void bxt_de_pll_enable(struct drm_i915_private *dev_priv, int vco)
{
int ratio = DIV_ROUND_CLOSEST(vco, dev_priv->cdclk_pll.ref);
u32 val;
val = I915_READ(BXT_DE_PLL_CTL);
val &= ~BXT_DE_PLL_RATIO_MASK;
val |= BXT_DE_PLL_RATIO(ratio);
I915_WRITE(BXT_DE_PLL_CTL, val);
I915_WRITE(BXT_DE_PLL_ENABLE, BXT_DE_PLL_PLL_ENABLE);
/* Timeout 200us */
if (intel_wait_for_register(dev_priv,
BXT_DE_PLL_ENABLE,
BXT_DE_PLL_LOCK,
BXT_DE_PLL_LOCK,
1))
DRM_ERROR("timeout waiting for DE PLL lock\n");
dev_priv->cdclk_pll.vco = vco;
}
static void bxt_set_cdclk(struct drm_i915_private *dev_priv, int cdclk)
{
u32 val, divider;
int vco, ret;
vco = bxt_de_pll_vco(dev_priv, cdclk);
DRM_DEBUG_DRIVER("Changing CDCLK to %d kHz (VCO %d kHz)\n", cdclk, vco);
/* cdclk = vco / 2 / div{1,1.5,2,4} */
switch (DIV_ROUND_CLOSEST(vco, cdclk)) {
case 8:
divider = BXT_CDCLK_CD2X_DIV_SEL_4;
break;
case 4:
divider = BXT_CDCLK_CD2X_DIV_SEL_2;
break;
case 3:
divider = BXT_CDCLK_CD2X_DIV_SEL_1_5;
break;
case 2:
divider = BXT_CDCLK_CD2X_DIV_SEL_1;
break;
default:
WARN_ON(cdclk != dev_priv->cdclk_pll.ref);
WARN_ON(vco != 0);
divider = BXT_CDCLK_CD2X_DIV_SEL_1;
break;
}
/* Inform power controller of upcoming frequency change */
mutex_lock(&dev_priv->rps.hw_lock);
ret = sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ,
0x80000000);
mutex_unlock(&dev_priv->rps.hw_lock);
if (ret) {
DRM_ERROR("PCode CDCLK freq change notify failed (err %d, freq %d)\n",
ret, cdclk);
return;
}
if (dev_priv->cdclk_pll.vco != 0 &&
dev_priv->cdclk_pll.vco != vco)
bxt_de_pll_disable(dev_priv);
if (dev_priv->cdclk_pll.vco != vco)
bxt_de_pll_enable(dev_priv, vco);
val = divider | skl_cdclk_decimal(cdclk);
/*
* FIXME if only the cd2x divider needs changing, it could be done
* without shutting off the pipe (if only one pipe is active).
*/
val |= BXT_CDCLK_CD2X_PIPE_NONE;
/*
* Disable SSA Precharge when CD clock frequency < 500 MHz,
* enable otherwise.
*/
if (cdclk >= 500000)
val |= BXT_CDCLK_SSA_PRECHARGE_ENABLE;
I915_WRITE(CDCLK_CTL, val);
mutex_lock(&dev_priv->rps.hw_lock);
ret = sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ,
DIV_ROUND_UP(cdclk, 25000));
mutex_unlock(&dev_priv->rps.hw_lock);
if (ret) {
DRM_ERROR("PCode CDCLK freq set failed, (err %d, freq %d)\n",
ret, cdclk);
return;
}
intel_update_cdclk(&dev_priv->drm);
}
static void bxt_sanitize_cdclk(struct drm_i915_private *dev_priv)
{
u32 cdctl, expected;
intel_update_cdclk(&dev_priv->drm);
if (dev_priv->cdclk_pll.vco == 0 ||
dev_priv->cdclk_freq == dev_priv->cdclk_pll.ref)
goto sanitize;
/* DPLL okay; verify the cdclock
*
* Some BIOS versions leave an incorrect decimal frequency value and
* set reserved MBZ bits in CDCLK_CTL at least during exiting from S4,
* so sanitize this register.
*/
cdctl = I915_READ(CDCLK_CTL);
/*
* Let's ignore the pipe field, since BIOS could have configured the
* dividers both synching to an active pipe, or asynchronously
* (PIPE_NONE).
*/
cdctl &= ~BXT_CDCLK_CD2X_PIPE_NONE;
expected = (cdctl & BXT_CDCLK_CD2X_DIV_SEL_MASK) |
skl_cdclk_decimal(dev_priv->cdclk_freq);
/*
* Disable SSA Precharge when CD clock frequency < 500 MHz,
* enable otherwise.
*/
if (dev_priv->cdclk_freq >= 500000)
expected |= BXT_CDCLK_SSA_PRECHARGE_ENABLE;
if (cdctl == expected)
/* All well; nothing to sanitize */
return;
sanitize:
DRM_DEBUG_KMS("Sanitizing cdclk programmed by pre-os\n");
/* force cdclk programming */
dev_priv->cdclk_freq = 0;
/* force full PLL disable + enable */
dev_priv->cdclk_pll.vco = -1;
}
void bxt_init_cdclk(struct drm_i915_private *dev_priv)
{
bxt_sanitize_cdclk(dev_priv);
if (dev_priv->cdclk_freq != 0 && dev_priv->cdclk_pll.vco != 0)
return;
/*
* FIXME:
* - The initial CDCLK needs to be read from VBT.
* Need to make this change after VBT has changes for BXT.
*/
bxt_set_cdclk(dev_priv, bxt_calc_cdclk(0));
}
void bxt_uninit_cdclk(struct drm_i915_private *dev_priv)
{
bxt_set_cdclk(dev_priv, dev_priv->cdclk_pll.ref);
}
static int skl_calc_cdclk(int max_pixclk, int vco)
{
if (vco == 8640000) {
if (max_pixclk > 540000)
return 617143;
else if (max_pixclk > 432000)
return 540000;
else if (max_pixclk > 308571)
return 432000;
else
return 308571;
} else {
if (max_pixclk > 540000)
return 675000;
else if (max_pixclk > 450000)
return 540000;
else if (max_pixclk > 337500)
return 450000;
else
return 337500;
}
}
static void
skl_dpll0_update(struct drm_i915_private *dev_priv)
{
u32 val;
dev_priv->cdclk_pll.ref = 24000;
dev_priv->cdclk_pll.vco = 0;
val = I915_READ(LCPLL1_CTL);
if ((val & LCPLL_PLL_ENABLE) == 0)
return;
if (WARN_ON((val & LCPLL_PLL_LOCK) == 0))
return;
val = I915_READ(DPLL_CTRL1);
if (WARN_ON((val & (DPLL_CTRL1_HDMI_MODE(SKL_DPLL0) |
DPLL_CTRL1_SSC(SKL_DPLL0) |
DPLL_CTRL1_OVERRIDE(SKL_DPLL0))) !=
DPLL_CTRL1_OVERRIDE(SKL_DPLL0)))
return;
switch (val & DPLL_CTRL1_LINK_RATE_MASK(SKL_DPLL0)) {
case DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_810, SKL_DPLL0):
case DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1350, SKL_DPLL0):
case DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1620, SKL_DPLL0):
case DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_2700, SKL_DPLL0):
dev_priv->cdclk_pll.vco = 8100000;
break;
case DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1080, SKL_DPLL0):
case DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_2160, SKL_DPLL0):
dev_priv->cdclk_pll.vco = 8640000;
break;
default:
MISSING_CASE(val & DPLL_CTRL1_LINK_RATE_MASK(SKL_DPLL0));
break;
}
}
void skl_set_preferred_cdclk_vco(struct drm_i915_private *dev_priv, int vco)
{
bool changed = dev_priv->skl_preferred_vco_freq != vco;
dev_priv->skl_preferred_vco_freq = vco;
if (changed)
intel_update_max_cdclk(&dev_priv->drm);
}
static void
skl_dpll0_enable(struct drm_i915_private *dev_priv, int vco)
{
int min_cdclk = skl_calc_cdclk(0, vco);
u32 val;
WARN_ON(vco != 8100000 && vco != 8640000);
/* select the minimum CDCLK before enabling DPLL 0 */
val = CDCLK_FREQ_337_308 | skl_cdclk_decimal(min_cdclk);
I915_WRITE(CDCLK_CTL, val);
POSTING_READ(CDCLK_CTL);
/*
* We always enable DPLL0 with the lowest link rate possible, but still
* taking into account the VCO required to operate the eDP panel at the
* desired frequency. The usual DP link rates operate with a VCO of
* 8100 while the eDP 1.4 alternate link rates need a VCO of 8640.
* The modeset code is responsible for the selection of the exact link
* rate later on, with the constraint of choosing a frequency that
* works with vco.
*/
val = I915_READ(DPLL_CTRL1);
val &= ~(DPLL_CTRL1_HDMI_MODE(SKL_DPLL0) | DPLL_CTRL1_SSC(SKL_DPLL0) |
DPLL_CTRL1_LINK_RATE_MASK(SKL_DPLL0));
val |= DPLL_CTRL1_OVERRIDE(SKL_DPLL0);
if (vco == 8640000)
val |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1080,
SKL_DPLL0);
else
val |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_810,
SKL_DPLL0);
I915_WRITE(DPLL_CTRL1, val);
POSTING_READ(DPLL_CTRL1);
I915_WRITE(LCPLL1_CTL, I915_READ(LCPLL1_CTL) | LCPLL_PLL_ENABLE);
if (intel_wait_for_register(dev_priv,
LCPLL1_CTL, LCPLL_PLL_LOCK, LCPLL_PLL_LOCK,
5))
DRM_ERROR("DPLL0 not locked\n");
dev_priv->cdclk_pll.vco = vco;
/* We'll want to keep using the current vco from now on. */
skl_set_preferred_cdclk_vco(dev_priv, vco);
}
static void
skl_dpll0_disable(struct drm_i915_private *dev_priv)
{
I915_WRITE(LCPLL1_CTL, I915_READ(LCPLL1_CTL) & ~LCPLL_PLL_ENABLE);
if (intel_wait_for_register(dev_priv,
LCPLL1_CTL, LCPLL_PLL_LOCK, 0,
1))
DRM_ERROR("Couldn't disable DPLL0\n");
dev_priv->cdclk_pll.vco = 0;
}
static bool skl_cdclk_pcu_ready(struct drm_i915_private *dev_priv)
{
int ret;
u32 val;
/* inform PCU we want to change CDCLK */
val = SKL_CDCLK_PREPARE_FOR_CHANGE;
mutex_lock(&dev_priv->rps.hw_lock);
ret = sandybridge_pcode_read(dev_priv, SKL_PCODE_CDCLK_CONTROL, &val);
mutex_unlock(&dev_priv->rps.hw_lock);
return ret == 0 && (val & SKL_CDCLK_READY_FOR_CHANGE);
}
static bool skl_cdclk_wait_for_pcu_ready(struct drm_i915_private *dev_priv)
{
return _wait_for(skl_cdclk_pcu_ready(dev_priv), 3000, 10) == 0;
}
static void skl_set_cdclk(struct drm_i915_private *dev_priv, int cdclk, int vco)
{
struct drm_device *dev = &dev_priv->drm;
u32 freq_select, pcu_ack;
WARN_ON((cdclk == 24000) != (vco == 0));
DRM_DEBUG_DRIVER("Changing CDCLK to %d kHz (VCO %d kHz)\n", cdclk, vco);
if (!skl_cdclk_wait_for_pcu_ready(dev_priv)) {
DRM_ERROR("failed to inform PCU about cdclk change\n");
return;
}
/* set CDCLK_CTL */
switch (cdclk) {
case 450000:
case 432000:
freq_select = CDCLK_FREQ_450_432;
pcu_ack = 1;
break;
case 540000:
freq_select = CDCLK_FREQ_540;
pcu_ack = 2;
break;
case 308571:
case 337500:
default:
freq_select = CDCLK_FREQ_337_308;
pcu_ack = 0;
break;
case 617143:
case 675000:
freq_select = CDCLK_FREQ_675_617;
pcu_ack = 3;
break;
}
if (dev_priv->cdclk_pll.vco != 0 &&
dev_priv->cdclk_pll.vco != vco)
skl_dpll0_disable(dev_priv);
if (dev_priv->cdclk_pll.vco != vco)
skl_dpll0_enable(dev_priv, vco);
I915_WRITE(CDCLK_CTL, freq_select | skl_cdclk_decimal(cdclk));
POSTING_READ(CDCLK_CTL);
/* inform PCU of the change */
mutex_lock(&dev_priv->rps.hw_lock);
sandybridge_pcode_write(dev_priv, SKL_PCODE_CDCLK_CONTROL, pcu_ack);
mutex_unlock(&dev_priv->rps.hw_lock);
intel_update_cdclk(dev);
}
static void skl_sanitize_cdclk(struct drm_i915_private *dev_priv);
void skl_uninit_cdclk(struct drm_i915_private *dev_priv)
{
skl_set_cdclk(dev_priv, dev_priv->cdclk_pll.ref, 0);
}
void skl_init_cdclk(struct drm_i915_private *dev_priv)
{
int cdclk, vco;
skl_sanitize_cdclk(dev_priv);
if (dev_priv->cdclk_freq != 0 && dev_priv->cdclk_pll.vco != 0) {
/*
* Use the current vco as our initial
* guess as to what the preferred vco is.
*/
if (dev_priv->skl_preferred_vco_freq == 0)
skl_set_preferred_cdclk_vco(dev_priv,
dev_priv->cdclk_pll.vco);
return;
}
vco = dev_priv->skl_preferred_vco_freq;
if (vco == 0)
vco = 8100000;
cdclk = skl_calc_cdclk(0, vco);
skl_set_cdclk(dev_priv, cdclk, vco);
}
static void skl_sanitize_cdclk(struct drm_i915_private *dev_priv)
{
uint32_t cdctl, expected;
/*
* check if the pre-os intialized the display
* There is SWF18 scratchpad register defined which is set by the
* pre-os which can be used by the OS drivers to check the status
*/
if ((I915_READ(SWF_ILK(0x18)) & 0x00FFFFFF) == 0)
goto sanitize;
intel_update_cdclk(&dev_priv->drm);
/* Is PLL enabled and locked ? */
if (dev_priv->cdclk_pll.vco == 0 ||
dev_priv->cdclk_freq == dev_priv->cdclk_pll.ref)
goto sanitize;
/* DPLL okay; verify the cdclock
*
* Noticed in some instances that the freq selection is correct but
* decimal part is programmed wrong from BIOS where pre-os does not
* enable display. Verify the same as well.
*/
cdctl = I915_READ(CDCLK_CTL);
expected = (cdctl & CDCLK_FREQ_SEL_MASK) |
skl_cdclk_decimal(dev_priv->cdclk_freq);
if (cdctl == expected)
/* All well; nothing to sanitize */
return;
sanitize:
DRM_DEBUG_KMS("Sanitizing cdclk programmed by pre-os\n");
/* force cdclk programming */
dev_priv->cdclk_freq = 0;
/* force full PLL disable + enable */
dev_priv->cdclk_pll.vco = -1;
}
/* Adjust CDclk dividers to allow high res or save power if possible */
static void valleyview_set_cdclk(struct drm_device *dev, int cdclk)
{
struct drm_i915_private *dev_priv = to_i915(dev);
u32 val, cmd;
WARN_ON(dev_priv->display.get_display_clock_speed(dev)
!= dev_priv->cdclk_freq);
if (cdclk >= 320000) /* jump to highest voltage for 400MHz too */
cmd = 2;
else if (cdclk == 266667)
cmd = 1;
else
cmd = 0;
mutex_lock(&dev_priv->rps.hw_lock);
val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
val &= ~DSPFREQGUAR_MASK;
val |= (cmd << DSPFREQGUAR_SHIFT);
vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val);
if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) &
DSPFREQSTAT_MASK) == (cmd << DSPFREQSTAT_SHIFT),
50)) {
DRM_ERROR("timed out waiting for CDclk change\n");
}
mutex_unlock(&dev_priv->rps.hw_lock);
mutex_lock(&dev_priv->sb_lock);
if (cdclk == 400000) {
u32 divider;
divider = DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, cdclk) - 1;
/* adjust cdclk divider */
val = vlv_cck_read(dev_priv, CCK_DISPLAY_CLOCK_CONTROL);
val &= ~CCK_FREQUENCY_VALUES;
val |= divider;
vlv_cck_write(dev_priv, CCK_DISPLAY_CLOCK_CONTROL, val);
if (wait_for((vlv_cck_read(dev_priv, CCK_DISPLAY_CLOCK_CONTROL) &
CCK_FREQUENCY_STATUS) == (divider << CCK_FREQUENCY_STATUS_SHIFT),
50))
DRM_ERROR("timed out waiting for CDclk change\n");
}
/* adjust self-refresh exit latency value */
val = vlv_bunit_read(dev_priv, BUNIT_REG_BISOC);
val &= ~0x7f;
/*
* For high bandwidth configs, we set a higher latency in the bunit
* so that the core display fetch happens in time to avoid underruns.
*/
if (cdclk == 400000)
val |= 4500 / 250; /* 4.5 usec */
else
val |= 3000 / 250; /* 3.0 usec */
vlv_bunit_write(dev_priv, BUNIT_REG_BISOC, val);
mutex_unlock(&dev_priv->sb_lock);
intel_update_cdclk(dev);
}
static void cherryview_set_cdclk(struct drm_device *dev, int cdclk)
{
struct drm_i915_private *dev_priv = to_i915(dev);
u32 val, cmd;
WARN_ON(dev_priv->display.get_display_clock_speed(dev)
!= dev_priv->cdclk_freq);
switch (cdclk) {
case 333333:
case 320000:
case 266667:
case 200000:
break;
default:
MISSING_CASE(cdclk);
return;
}
/*
* Specs are full of misinformation, but testing on actual
* hardware has shown that we just need to write the desired
* CCK divider into the Punit register.
*/
cmd = DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, cdclk) - 1;
mutex_lock(&dev_priv->rps.hw_lock);
val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
val &= ~DSPFREQGUAR_MASK_CHV;
val |= (cmd << DSPFREQGUAR_SHIFT_CHV);
vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val);
if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) &
DSPFREQSTAT_MASK_CHV) == (cmd << DSPFREQSTAT_SHIFT_CHV),
50)) {
DRM_ERROR("timed out waiting for CDclk change\n");
}
mutex_unlock(&dev_priv->rps.hw_lock);
intel_update_cdclk(dev);
}
static int valleyview_calc_cdclk(struct drm_i915_private *dev_priv,
int max_pixclk)
{
int freq_320 = (dev_priv->hpll_freq << 1) % 320000 != 0 ? 333333 : 320000;
int limit = IS_CHERRYVIEW(dev_priv) ? 95 : 90;
/*
* Really only a few cases to deal with, as only 4 CDclks are supported:
* 200MHz
* 267MHz
* 320/333MHz (depends on HPLL freq)
* 400MHz (VLV only)
* So we check to see whether we're above 90% (VLV) or 95% (CHV)
* of the lower bin and adjust if needed.
*
* We seem to get an unstable or solid color picture at 200MHz.
* Not sure what's wrong. For now use 200MHz only when all pipes
* are off.
*/
if (!IS_CHERRYVIEW(dev_priv) &&
max_pixclk > freq_320*limit/100)
return 400000;
else if (max_pixclk > 266667*limit/100)
return freq_320;
else if (max_pixclk > 0)
return 266667;
else
return 200000;
}
static int bxt_calc_cdclk(int max_pixclk)
{
if (max_pixclk > 576000)
return 624000;
else if (max_pixclk > 384000)
return 576000;
else if (max_pixclk > 288000)
return 384000;
else if (max_pixclk > 144000)
return 288000;
else
return 144000;
}
/* Compute the max pixel clock for new configuration. */
static int intel_mode_max_pixclk(struct drm_device *dev,
struct drm_atomic_state *state)
{
struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_crtc *crtc;
struct drm_crtc_state *crtc_state;
unsigned max_pixclk = 0, i;
enum pipe pipe;
memcpy(intel_state->min_pixclk, dev_priv->min_pixclk,
sizeof(intel_state->min_pixclk));
for_each_crtc_in_state(state, crtc, crtc_state, i) {
int pixclk = 0;
if (crtc_state->enable)
pixclk = crtc_state->adjusted_mode.crtc_clock;
intel_state->min_pixclk[i] = pixclk;
}
for_each_pipe(dev_priv, pipe)
max_pixclk = max(intel_state->min_pixclk[pipe], max_pixclk);
return max_pixclk;
}
static int valleyview_modeset_calc_cdclk(struct drm_atomic_state *state)
{
struct drm_device *dev = state->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
int max_pixclk = intel_mode_max_pixclk(dev, state);
struct intel_atomic_state *intel_state =
to_intel_atomic_state(state);
intel_state->cdclk = intel_state->dev_cdclk =
valleyview_calc_cdclk(dev_priv, max_pixclk);
if (!intel_state->active_crtcs)
intel_state->dev_cdclk = valleyview_calc_cdclk(dev_priv, 0);
return 0;
}
static int bxt_modeset_calc_cdclk(struct drm_atomic_state *state)
{
int max_pixclk = ilk_max_pixel_rate(state);
struct intel_atomic_state *intel_state =
to_intel_atomic_state(state);
intel_state->cdclk = intel_state->dev_cdclk =
bxt_calc_cdclk(max_pixclk);
if (!intel_state->active_crtcs)
intel_state->dev_cdclk = bxt_calc_cdclk(0);
return 0;
}
static void vlv_program_pfi_credits(struct drm_i915_private *dev_priv)
{
unsigned int credits, default_credits;
if (IS_CHERRYVIEW(dev_priv))
default_credits = PFI_CREDIT(12);
else
default_credits = PFI_CREDIT(8);
if (dev_priv->cdclk_freq >= dev_priv->czclk_freq) {
/* CHV suggested value is 31 or 63 */
if (IS_CHERRYVIEW(dev_priv))
credits = PFI_CREDIT_63;
else
credits = PFI_CREDIT(15);
} else {
credits = default_credits;
}
/*
* WA - write default credits before re-programming
* FIXME: should we also set the resend bit here?
*/
I915_WRITE(GCI_CONTROL, VGA_FAST_MODE_DISABLE |
default_credits);
I915_WRITE(GCI_CONTROL, VGA_FAST_MODE_DISABLE |
credits | PFI_CREDIT_RESEND);
/*
* FIXME is this guaranteed to clear
* immediately or should we poll for it?
*/
WARN_ON(I915_READ(GCI_CONTROL) & PFI_CREDIT_RESEND);
}
static void valleyview_modeset_commit_cdclk(struct drm_atomic_state *old_state)
{
struct drm_device *dev = old_state->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_atomic_state *old_intel_state =
to_intel_atomic_state(old_state);
unsigned req_cdclk = old_intel_state->dev_cdclk;
/*
* FIXME: We can end up here with all power domains off, yet
* with a CDCLK frequency other than the minimum. To account
* for this take the PIPE-A power domain, which covers the HW
* blocks needed for the following programming. This can be
* removed once it's guaranteed that we get here either with
* the minimum CDCLK set, or the required power domains
* enabled.
*/
intel_display_power_get(dev_priv, POWER_DOMAIN_PIPE_A);
if (IS_CHERRYVIEW(dev))
cherryview_set_cdclk(dev, req_cdclk);
else
valleyview_set_cdclk(dev, req_cdclk);
vlv_program_pfi_credits(dev_priv);
intel_display_power_put(dev_priv, POWER_DOMAIN_PIPE_A);
}
static void valleyview_crtc_enable(struct intel_crtc_state *pipe_config,
struct drm_atomic_state *old_state)
{
struct drm_crtc *crtc = pipe_config->base.crtc;
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
if (WARN_ON(intel_crtc->active))
return;
if (intel_crtc_has_dp_encoder(intel_crtc->config))
intel_dp_set_m_n(intel_crtc, M1_N1);
intel_set_pipe_timings(intel_crtc);
intel_set_pipe_src_size(intel_crtc);
if (IS_CHERRYVIEW(dev) && pipe == PIPE_B) {
struct drm_i915_private *dev_priv = to_i915(dev);
I915_WRITE(CHV_BLEND(pipe), CHV_BLEND_LEGACY);
I915_WRITE(CHV_CANVAS(pipe), 0);
}
i9xx_set_pipeconf(intel_crtc);
intel_crtc->active = true;
intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
intel_encoders_pre_pll_enable(crtc, pipe_config, old_state);
if (IS_CHERRYVIEW(dev)) {
chv_prepare_pll(intel_crtc, intel_crtc->config);
chv_enable_pll(intel_crtc, intel_crtc->config);
} else {
vlv_prepare_pll(intel_crtc, intel_crtc->config);
vlv_enable_pll(intel_crtc, intel_crtc->config);
}
intel_encoders_pre_enable(crtc, pipe_config, old_state);
i9xx_pfit_enable(intel_crtc);
intel_color_load_luts(&pipe_config->base);
intel_update_watermarks(crtc);
intel_enable_pipe(intel_crtc);
assert_vblank_disabled(crtc);
drm_crtc_vblank_on(crtc);
intel_encoders_enable(crtc, pipe_config, old_state);
}
static void i9xx_set_pll_dividers(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
I915_WRITE(FP0(crtc->pipe), crtc->config->dpll_hw_state.fp0);
I915_WRITE(FP1(crtc->pipe), crtc->config->dpll_hw_state.fp1);
}
static void i9xx_crtc_enable(struct intel_crtc_state *pipe_config,
struct drm_atomic_state *old_state)
{
struct drm_crtc *crtc = pipe_config->base.crtc;
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
enum pipe pipe = intel_crtc->pipe;
if (WARN_ON(intel_crtc->active))
return;
i9xx_set_pll_dividers(intel_crtc);
if (intel_crtc_has_dp_encoder(intel_crtc->config))
intel_dp_set_m_n(intel_crtc, M1_N1);
intel_set_pipe_timings(intel_crtc);
intel_set_pipe_src_size(intel_crtc);
i9xx_set_pipeconf(intel_crtc);
intel_crtc->active = true;
if (!IS_GEN2(dev))
intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
intel_encoders_pre_enable(crtc, pipe_config, old_state);
i9xx_enable_pll(intel_crtc);
i9xx_pfit_enable(intel_crtc);
intel_color_load_luts(&pipe_config->base);
intel_update_watermarks(crtc);
intel_enable_pipe(intel_crtc);
assert_vblank_disabled(crtc);
drm_crtc_vblank_on(crtc);
intel_encoders_enable(crtc, pipe_config, old_state);
}
static void i9xx_pfit_disable(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
if (!crtc->config->gmch_pfit.control)
return;
assert_pipe_disabled(dev_priv, crtc->pipe);
DRM_DEBUG_DRIVER("disabling pfit, current: 0x%08x\n",
I915_READ(PFIT_CONTROL));
I915_WRITE(PFIT_CONTROL, 0);
}
static void i9xx_crtc_disable(struct intel_crtc_state *old_crtc_state,
struct drm_atomic_state *old_state)
{
struct drm_crtc *crtc = old_crtc_state->base.crtc;
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
/*
* On gen2 planes are double buffered but the pipe isn't, so we must
* wait for planes to fully turn off before disabling the pipe.
*/
if (IS_GEN2(dev))
intel_wait_for_vblank(dev, pipe);
intel_encoders_disable(crtc, old_crtc_state, old_state);
drm_crtc_vblank_off(crtc);
assert_vblank_disabled(crtc);
intel_disable_pipe(intel_crtc);
i9xx_pfit_disable(intel_crtc);
intel_encoders_post_disable(crtc, old_crtc_state, old_state);
if (!intel_crtc_has_type(intel_crtc->config, INTEL_OUTPUT_DSI)) {
if (IS_CHERRYVIEW(dev))
chv_disable_pll(dev_priv, pipe);
else if (IS_VALLEYVIEW(dev))
vlv_disable_pll(dev_priv, pipe);
else
i9xx_disable_pll(intel_crtc);
}
intel_encoders_post_pll_disable(crtc, old_crtc_state, old_state);
if (!IS_GEN2(dev))
intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
}
static void intel_crtc_disable_noatomic(struct drm_crtc *crtc)
{
struct intel_encoder *encoder;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->dev);
enum intel_display_power_domain domain;
unsigned long domains;
struct drm_atomic_state *state;
struct intel_crtc_state *crtc_state;
int ret;
if (!intel_crtc->active)
return;
if (to_intel_plane_state(crtc->primary->state)->base.visible) {
WARN_ON(intel_crtc->flip_work);
intel_pre_disable_primary_noatomic(crtc);
intel_crtc_disable_planes(crtc, 1 << drm_plane_index(crtc->primary));
to_intel_plane_state(crtc->primary->state)->base.visible = false;
}
state = drm_atomic_state_alloc(crtc->dev);
state->acquire_ctx = crtc->dev->mode_config.acquire_ctx;
/* Everything's already locked, -EDEADLK can't happen. */
crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
ret = drm_atomic_add_affected_connectors(state, crtc);
WARN_ON(IS_ERR(crtc_state) || ret);
dev_priv->display.crtc_disable(crtc_state, state);
drm_atomic_state_free(state);
DRM_DEBUG_KMS("[CRTC:%d:%s] hw state adjusted, was enabled, now disabled\n",
crtc->base.id, crtc->name);
WARN_ON(drm_atomic_set_mode_for_crtc(crtc->state, NULL) < 0);
crtc->state->active = false;
intel_crtc->active = false;
crtc->enabled = false;
crtc->state->connector_mask = 0;
crtc->state->encoder_mask = 0;
for_each_encoder_on_crtc(crtc->dev, crtc, encoder)
encoder->base.crtc = NULL;
intel_fbc_disable(intel_crtc);
intel_update_watermarks(crtc);
intel_disable_shared_dpll(intel_crtc);
domains = intel_crtc->enabled_power_domains;
for_each_power_domain(domain, domains)
intel_display_power_put(dev_priv, domain);
intel_crtc->enabled_power_domains = 0;
dev_priv->active_crtcs &= ~(1 << intel_crtc->pipe);
dev_priv->min_pixclk[intel_crtc->pipe] = 0;
}
/*
* turn all crtc's off, but do not adjust state
* This has to be paired with a call to intel_modeset_setup_hw_state.
*/
int intel_display_suspend(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_atomic_state *state;
int ret;
state = drm_atomic_helper_suspend(dev);
ret = PTR_ERR_OR_ZERO(state);
if (ret)
DRM_ERROR("Suspending crtc's failed with %i\n", ret);
else
dev_priv->modeset_restore_state = state;
return ret;
}
void intel_encoder_destroy(struct drm_encoder *encoder)
{
struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
drm_encoder_cleanup(encoder);
kfree(intel_encoder);
}
/* Cross check the actual hw state with our own modeset state tracking (and it's
* internal consistency). */
static void intel_connector_verify_state(struct intel_connector *connector)
{
struct drm_crtc *crtc = connector->base.state->crtc;
DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
connector->base.base.id,
connector->base.name);
if (connector->get_hw_state(connector)) {
struct intel_encoder *encoder = connector->encoder;
struct drm_connector_state *conn_state = connector->base.state;
I915_STATE_WARN(!crtc,
"connector enabled without attached crtc\n");
if (!crtc)
return;
I915_STATE_WARN(!crtc->state->active,
"connector is active, but attached crtc isn't\n");
if (!encoder || encoder->type == INTEL_OUTPUT_DP_MST)
return;
I915_STATE_WARN(conn_state->best_encoder != &encoder->base,
"atomic encoder doesn't match attached encoder\n");
I915_STATE_WARN(conn_state->crtc != encoder->base.crtc,
"attached encoder crtc differs from connector crtc\n");
} else {
I915_STATE_WARN(crtc && crtc->state->active,
"attached crtc is active, but connector isn't\n");
I915_STATE_WARN(!crtc && connector->base.state->best_encoder,
"best encoder set without crtc!\n");
}
}
int intel_connector_init(struct intel_connector *connector)
{
drm_atomic_helper_connector_reset(&connector->base);
if (!connector->base.state)
return -ENOMEM;
return 0;
}
struct intel_connector *intel_connector_alloc(void)
{
struct intel_connector *connector;
connector = kzalloc(sizeof *connector, GFP_KERNEL);
if (!connector)
return NULL;
if (intel_connector_init(connector) < 0) {
kfree(connector);
return NULL;
}
return connector;
}
/* Simple connector->get_hw_state implementation for encoders that support only
* one connector and no cloning and hence the encoder state determines the state
* of the connector. */
bool intel_connector_get_hw_state(struct intel_connector *connector)
{
enum pipe pipe = 0;
struct intel_encoder *encoder = connector->encoder;
return encoder->get_hw_state(encoder, &pipe);
}
static int pipe_required_fdi_lanes(struct intel_crtc_state *crtc_state)
{
if (crtc_state->base.enable && crtc_state->has_pch_encoder)
return crtc_state->fdi_lanes;
return 0;
}
static int ironlake_check_fdi_lanes(struct drm_device *dev, enum pipe pipe,
struct intel_crtc_state *pipe_config)
{
struct drm_atomic_state *state = pipe_config->base.state;
struct intel_crtc *other_crtc;
struct intel_crtc_state *other_crtc_state;
DRM_DEBUG_KMS("checking fdi config on pipe %c, lanes %i\n",
pipe_name(pipe), pipe_config->fdi_lanes);
if (pipe_config->fdi_lanes > 4) {
DRM_DEBUG_KMS("invalid fdi lane config on pipe %c: %i lanes\n",
pipe_name(pipe), pipe_config->fdi_lanes);
return -EINVAL;
}
if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
if (pipe_config->fdi_lanes > 2) {
DRM_DEBUG_KMS("only 2 lanes on haswell, required: %i lanes\n",
pipe_config->fdi_lanes);
return -EINVAL;
} else {
return 0;
}
}
if (INTEL_INFO(dev)->num_pipes == 2)
return 0;
/* Ivybridge 3 pipe is really complicated */
switch (pipe) {
case PIPE_A:
return 0;
case PIPE_B:
if (pipe_config->fdi_lanes <= 2)
return 0;
other_crtc = to_intel_crtc(intel_get_crtc_for_pipe(dev, PIPE_C));
other_crtc_state =
intel_atomic_get_crtc_state(state, other_crtc);
if (IS_ERR(other_crtc_state))
return PTR_ERR(other_crtc_state);
if (pipe_required_fdi_lanes(other_crtc_state) > 0) {
DRM_DEBUG_KMS("invalid shared fdi lane config on pipe %c: %i lanes\n",
pipe_name(pipe), pipe_config->fdi_lanes);
return -EINVAL;
}
return 0;
case PIPE_C:
if (pipe_config->fdi_lanes > 2) {
DRM_DEBUG_KMS("only 2 lanes on pipe %c: required %i lanes\n",
pipe_name(pipe), pipe_config->fdi_lanes);
return -EINVAL;
}
other_crtc = to_intel_crtc(intel_get_crtc_for_pipe(dev, PIPE_B));
other_crtc_state =
intel_atomic_get_crtc_state(state, other_crtc);
if (IS_ERR(other_crtc_state))
return PTR_ERR(other_crtc_state);
if (pipe_required_fdi_lanes(other_crtc_state) > 2) {
DRM_DEBUG_KMS("fdi link B uses too many lanes to enable link C\n");
return -EINVAL;
}
return 0;
default:
BUG();
}
}
#define RETRY 1
static int ironlake_fdi_compute_config(struct intel_crtc *intel_crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = intel_crtc->base.dev;
const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
int lane, link_bw, fdi_dotclock, ret;
bool needs_recompute = false;
retry:
/* FDI is a binary signal running at ~2.7GHz, encoding
* each output octet as 10 bits. The actual frequency
* is stored as a divider into a 100MHz clock, and the
* mode pixel clock is stored in units of 1KHz.
* Hence the bw of each lane in terms of the mode signal
* is:
*/
link_bw = intel_fdi_link_freq(to_i915(dev), pipe_config);
fdi_dotclock = adjusted_mode->crtc_clock;
lane = ironlake_get_lanes_required(fdi_dotclock, link_bw,
pipe_config->pipe_bpp);
pipe_config->fdi_lanes = lane;
intel_link_compute_m_n(pipe_config->pipe_bpp, lane, fdi_dotclock,
link_bw, &pipe_config->fdi_m_n);
ret = ironlake_check_fdi_lanes(dev, intel_crtc->pipe, pipe_config);
if (ret == -EINVAL && pipe_config->pipe_bpp > 6*3) {
pipe_config->pipe_bpp -= 2*3;
DRM_DEBUG_KMS("fdi link bw constraint, reducing pipe bpp to %i\n",
pipe_config->pipe_bpp);
needs_recompute = true;
pipe_config->bw_constrained = true;
goto retry;
}
if (needs_recompute)
return RETRY;
return ret;
}
static bool pipe_config_supports_ips(struct drm_i915_private *dev_priv,
struct intel_crtc_state *pipe_config)
{
if (pipe_config->pipe_bpp > 24)
return false;
/* HSW can handle pixel rate up to cdclk? */
if (IS_HASWELL(dev_priv))
return true;
/*
* We compare against max which means we must take
* the increased cdclk requirement into account when
* calculating the new cdclk.
*
* Should measure whether using a lower cdclk w/o IPS
*/
return ilk_pipe_pixel_rate(pipe_config) <=
dev_priv->max_cdclk_freq * 95 / 100;
}
static void hsw_compute_ips_config(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
pipe_config->ips_enabled = i915.enable_ips &&
hsw_crtc_supports_ips(crtc) &&
pipe_config_supports_ips(dev_priv, pipe_config);
}
static bool intel_crtc_supports_double_wide(const struct intel_crtc *crtc)
{
const struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
/* GDG double wide on either pipe, otherwise pipe A only */
return INTEL_INFO(dev_priv)->gen < 4 &&
(crtc->pipe == PIPE_A || IS_I915G(dev_priv));
}
static int intel_crtc_compute_config(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
int clock_limit = dev_priv->max_dotclk_freq;
if (INTEL_INFO(dev)->gen < 4) {
clock_limit = dev_priv->max_cdclk_freq * 9 / 10;
/*
* Enable double wide mode when the dot clock
* is > 90% of the (display) core speed.
*/
if (intel_crtc_supports_double_wide(crtc) &&
adjusted_mode->crtc_clock > clock_limit) {
clock_limit = dev_priv->max_dotclk_freq;
pipe_config->double_wide = true;
}
}
if (adjusted_mode->crtc_clock > clock_limit) {
DRM_DEBUG_KMS("requested pixel clock (%d kHz) too high (max: %d kHz, double wide: %s)\n",
adjusted_mode->crtc_clock, clock_limit,
yesno(pipe_config->double_wide));
return -EINVAL;
}
/*
* Pipe horizontal size must be even in:
* - DVO ganged mode
* - LVDS dual channel mode
* - Double wide pipe
*/
if ((intel_crtc_has_type(pipe_config, INTEL_OUTPUT_LVDS) &&
intel_is_dual_link_lvds(dev)) || pipe_config->double_wide)
pipe_config->pipe_src_w &= ~1;
/* Cantiga+ cannot handle modes with a hsync front porch of 0.
* WaPruneModeWithIncorrectHsyncOffset:ctg,elk,ilk,snb,ivb,vlv,hsw.
*/
if ((INTEL_INFO(dev)->gen > 4 || IS_G4X(dev)) &&
adjusted_mode->crtc_hsync_start == adjusted_mode->crtc_hdisplay)
return -EINVAL;
if (HAS_IPS(dev))
hsw_compute_ips_config(crtc, pipe_config);
if (pipe_config->has_pch_encoder)
return ironlake_fdi_compute_config(crtc, pipe_config);
return 0;
}
static int skylake_get_display_clock_speed(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
uint32_t cdctl;
skl_dpll0_update(dev_priv);
if (dev_priv->cdclk_pll.vco == 0)
return dev_priv->cdclk_pll.ref;
cdctl = I915_READ(CDCLK_CTL);
if (dev_priv->cdclk_pll.vco == 8640000) {
switch (cdctl & CDCLK_FREQ_SEL_MASK) {
case CDCLK_FREQ_450_432:
return 432000;
case CDCLK_FREQ_337_308:
return 308571;
case CDCLK_FREQ_540:
return 540000;
case CDCLK_FREQ_675_617:
return 617143;
default:
MISSING_CASE(cdctl & CDCLK_FREQ_SEL_MASK);
}
} else {
switch (cdctl & CDCLK_FREQ_SEL_MASK) {
case CDCLK_FREQ_450_432:
return 450000;
case CDCLK_FREQ_337_308:
return 337500;
case CDCLK_FREQ_540:
return 540000;
case CDCLK_FREQ_675_617:
return 675000;
default:
MISSING_CASE(cdctl & CDCLK_FREQ_SEL_MASK);
}
}
return dev_priv->cdclk_pll.ref;
}
static void bxt_de_pll_update(struct drm_i915_private *dev_priv)
{
u32 val;
dev_priv->cdclk_pll.ref = 19200;
dev_priv->cdclk_pll.vco = 0;
val = I915_READ(BXT_DE_PLL_ENABLE);
if ((val & BXT_DE_PLL_PLL_ENABLE) == 0)
return;
if (WARN_ON((val & BXT_DE_PLL_LOCK) == 0))
return;
val = I915_READ(BXT_DE_PLL_CTL);
dev_priv->cdclk_pll.vco = (val & BXT_DE_PLL_RATIO_MASK) *
dev_priv->cdclk_pll.ref;
}
static int broxton_get_display_clock_speed(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
u32 divider;
int div, vco;
bxt_de_pll_update(dev_priv);
vco = dev_priv->cdclk_pll.vco;
if (vco == 0)
return dev_priv->cdclk_pll.ref;
divider = I915_READ(CDCLK_CTL) & BXT_CDCLK_CD2X_DIV_SEL_MASK;
switch (divider) {
case BXT_CDCLK_CD2X_DIV_SEL_1:
div = 2;
break;
case BXT_CDCLK_CD2X_DIV_SEL_1_5:
div = 3;
break;
case BXT_CDCLK_CD2X_DIV_SEL_2:
div = 4;
break;
case BXT_CDCLK_CD2X_DIV_SEL_4:
div = 8;
break;
default:
MISSING_CASE(divider);
return dev_priv->cdclk_pll.ref;
}
return DIV_ROUND_CLOSEST(vco, div);
}
static int broadwell_get_display_clock_speed(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
uint32_t lcpll = I915_READ(LCPLL_CTL);
uint32_t freq = lcpll & LCPLL_CLK_FREQ_MASK;
if (lcpll & LCPLL_CD_SOURCE_FCLK)
return 800000;
else if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT)
return 450000;
else if (freq == LCPLL_CLK_FREQ_450)
return 450000;
else if (freq == LCPLL_CLK_FREQ_54O_BDW)
return 540000;
else if (freq == LCPLL_CLK_FREQ_337_5_BDW)
return 337500;
else
return 675000;
}
static int haswell_get_display_clock_speed(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
uint32_t lcpll = I915_READ(LCPLL_CTL);
uint32_t freq = lcpll & LCPLL_CLK_FREQ_MASK;
if (lcpll & LCPLL_CD_SOURCE_FCLK)
return 800000;
else if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT)
return 450000;
else if (freq == LCPLL_CLK_FREQ_450)
return 450000;
else if (IS_HSW_ULT(dev))
return 337500;
else
return 540000;
}
static int valleyview_get_display_clock_speed(struct drm_device *dev)
{
return vlv_get_cck_clock_hpll(to_i915(dev), "cdclk",
CCK_DISPLAY_CLOCK_CONTROL);
}
static int ilk_get_display_clock_speed(struct drm_device *dev)
{
return 450000;
}
static int i945_get_display_clock_speed(struct drm_device *dev)
{
return 400000;
}
static int i915_get_display_clock_speed(struct drm_device *dev)
{
return 333333;
}
static int i9xx_misc_get_display_clock_speed(struct drm_device *dev)
{
return 200000;
}
static int pnv_get_display_clock_speed(struct drm_device *dev)
{
struct pci_dev *pdev = dev->pdev;
u16 gcfgc = 0;
pci_read_config_word(pdev, GCFGC, &gcfgc);
switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
case GC_DISPLAY_CLOCK_267_MHZ_PNV:
return 266667;
case GC_DISPLAY_CLOCK_333_MHZ_PNV:
return 333333;
case GC_DISPLAY_CLOCK_444_MHZ_PNV:
return 444444;
case GC_DISPLAY_CLOCK_200_MHZ_PNV:
return 200000;
default:
DRM_ERROR("Unknown pnv display core clock 0x%04x\n", gcfgc);
case GC_DISPLAY_CLOCK_133_MHZ_PNV:
return 133333;
case GC_DISPLAY_CLOCK_167_MHZ_PNV:
return 166667;
}
}
static int i915gm_get_display_clock_speed(struct drm_device *dev)
{
struct pci_dev *pdev = dev->pdev;
u16 gcfgc = 0;
pci_read_config_word(pdev, GCFGC, &gcfgc);
if (gcfgc & GC_LOW_FREQUENCY_ENABLE)
return 133333;
else {
switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
case GC_DISPLAY_CLOCK_333_MHZ:
return 333333;
default:
case GC_DISPLAY_CLOCK_190_200_MHZ:
return 190000;
}
}
}
static int i865_get_display_clock_speed(struct drm_device *dev)
{
return 266667;
}
static int i85x_get_display_clock_speed(struct drm_device *dev)
{
struct pci_dev *pdev = dev->pdev;
u16 hpllcc = 0;
/*
* 852GM/852GMV only supports 133 MHz and the HPLLCC
* encoding is different :(
* FIXME is this the right way to detect 852GM/852GMV?
*/
if (pdev->revision == 0x1)
return 133333;
pci_bus_read_config_word(pdev->bus,
PCI_DEVFN(0, 3), HPLLCC, &hpllcc);
/* Assume that the hardware is in the high speed state. This
* should be the default.
*/
switch (hpllcc & GC_CLOCK_CONTROL_MASK) {
case GC_CLOCK_133_200:
case GC_CLOCK_133_200_2:
case GC_CLOCK_100_200:
return 200000;
case GC_CLOCK_166_250:
return 250000;
case GC_CLOCK_100_133:
return 133333;
case GC_CLOCK_133_266:
case GC_CLOCK_133_266_2:
case GC_CLOCK_166_266:
return 266667;
}
/* Shouldn't happen */
return 0;
}
static int i830_get_display_clock_speed(struct drm_device *dev)
{
return 133333;
}
static unsigned int intel_hpll_vco(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
static const unsigned int blb_vco[8] = {
[0] = 3200000,
[1] = 4000000,
[2] = 5333333,
[3] = 4800000,
[4] = 6400000,
};
static const unsigned int pnv_vco[8] = {
[0] = 3200000,
[1] = 4000000,
[2] = 5333333,
[3] = 4800000,
[4] = 2666667,
};
static const unsigned int cl_vco[8] = {
[0] = 3200000,
[1] = 4000000,
[2] = 5333333,
[3] = 6400000,
[4] = 3333333,
[5] = 3566667,
[6] = 4266667,
};
static const unsigned int elk_vco[8] = {
[0] = 3200000,
[1] = 4000000,
[2] = 5333333,
[3] = 4800000,
};
static const unsigned int ctg_vco[8] = {
[0] = 3200000,
[1] = 4000000,
[2] = 5333333,
[3] = 6400000,
[4] = 2666667,
[5] = 4266667,
};
const unsigned int *vco_table;
unsigned int vco;
uint8_t tmp = 0;
/* FIXME other chipsets? */
if (IS_GM45(dev))
vco_table = ctg_vco;
else if (IS_G4X(dev))
vco_table = elk_vco;
else if (IS_CRESTLINE(dev))
vco_table = cl_vco;
else if (IS_PINEVIEW(dev))
vco_table = pnv_vco;
else if (IS_G33(dev))
vco_table = blb_vco;
else
return 0;
tmp = I915_READ(IS_MOBILE(dev) ? HPLLVCO_MOBILE : HPLLVCO);
vco = vco_table[tmp & 0x7];
if (vco == 0)
DRM_ERROR("Bad HPLL VCO (HPLLVCO=0x%02x)\n", tmp);
else
DRM_DEBUG_KMS("HPLL VCO %u kHz\n", vco);
return vco;
}
static int gm45_get_display_clock_speed(struct drm_device *dev)
{
struct pci_dev *pdev = dev->pdev;
unsigned int cdclk_sel, vco = intel_hpll_vco(dev);
uint16_t tmp = 0;
pci_read_config_word(pdev, GCFGC, &tmp);
cdclk_sel = (tmp >> 12) & 0x1;
switch (vco) {
case 2666667:
case 4000000:
case 5333333:
return cdclk_sel ? 333333 : 222222;
case 3200000:
return cdclk_sel ? 320000 : 228571;
default:
DRM_ERROR("Unable to determine CDCLK. HPLL VCO=%u, CFGC=0x%04x\n", vco, tmp);
return 222222;
}
}
static int i965gm_get_display_clock_speed(struct drm_device *dev)
{
struct pci_dev *pdev = dev->pdev;
static const uint8_t div_3200[] = { 16, 10, 8 };
static const uint8_t div_4000[] = { 20, 12, 10 };
static const uint8_t div_5333[] = { 24, 16, 14 };
const uint8_t *div_table;
unsigned int cdclk_sel, vco = intel_hpll_vco(dev);
uint16_t tmp = 0;
pci_read_config_word(pdev, GCFGC, &tmp);
cdclk_sel = ((tmp >> 8) & 0x1f) - 1;
if (cdclk_sel >= ARRAY_SIZE(div_3200))
goto fail;
switch (vco) {
case 3200000:
div_table = div_3200;
break;
case 4000000:
div_table = div_4000;
break;
case 5333333:
div_table = div_5333;
break;
default:
goto fail;
}
return DIV_ROUND_CLOSEST(vco, div_table[cdclk_sel]);
fail:
DRM_ERROR("Unable to determine CDCLK. HPLL VCO=%u kHz, CFGC=0x%04x\n", vco, tmp);
return 200000;
}
static int g33_get_display_clock_speed(struct drm_device *dev)
{
struct pci_dev *pdev = dev->pdev;
static const uint8_t div_3200[] = { 12, 10, 8, 7, 5, 16 };
static const uint8_t div_4000[] = { 14, 12, 10, 8, 6, 20 };
static const uint8_t div_4800[] = { 20, 14, 12, 10, 8, 24 };
static const uint8_t div_5333[] = { 20, 16, 12, 12, 8, 28 };
const uint8_t *div_table;
unsigned int cdclk_sel, vco = intel_hpll_vco(dev);
uint16_t tmp = 0;
pci_read_config_word(pdev, GCFGC, &tmp);
cdclk_sel = (tmp >> 4) & 0x7;
if (cdclk_sel >= ARRAY_SIZE(div_3200))
goto fail;
switch (vco) {
case 3200000:
div_table = div_3200;
break;
case 4000000:
div_table = div_4000;
break;
case 4800000:
div_table = div_4800;
break;
case 5333333:
div_table = div_5333;
break;
default:
goto fail;
}
return DIV_ROUND_CLOSEST(vco, div_table[cdclk_sel]);
fail:
DRM_ERROR("Unable to determine CDCLK. HPLL VCO=%u kHz, CFGC=0x%08x\n", vco, tmp);
return 190476;
}
static void
intel_reduce_m_n_ratio(uint32_t *num, uint32_t *den)
{
while (*num > DATA_LINK_M_N_MASK ||
*den > DATA_LINK_M_N_MASK) {
*num >>= 1;
*den >>= 1;
}
}
static void compute_m_n(unsigned int m, unsigned int n,
uint32_t *ret_m, uint32_t *ret_n)
{
*ret_n = min_t(unsigned int, roundup_pow_of_two(n), DATA_LINK_N_MAX);
*ret_m = div_u64((uint64_t) m * *ret_n, n);
intel_reduce_m_n_ratio(ret_m, ret_n);
}
void
intel_link_compute_m_n(int bits_per_pixel, int nlanes,
int pixel_clock, int link_clock,
struct intel_link_m_n *m_n)
{
m_n->tu = 64;
compute_m_n(bits_per_pixel * pixel_clock,
link_clock * nlanes * 8,
&m_n->gmch_m, &m_n->gmch_n);
compute_m_n(pixel_clock, link_clock,
&m_n->link_m, &m_n->link_n);
}
static inline bool intel_panel_use_ssc(struct drm_i915_private *dev_priv)
{
if (i915.panel_use_ssc >= 0)
return i915.panel_use_ssc != 0;
return dev_priv->vbt.lvds_use_ssc
&& !(dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE);
}
static uint32_t pnv_dpll_compute_fp(struct dpll *dpll)
{
return (1 << dpll->n) << 16 | dpll->m2;
}
static uint32_t i9xx_dpll_compute_fp(struct dpll *dpll)
{
return dpll->n << 16 | dpll->m1 << 8 | dpll->m2;
}
static void i9xx_update_pll_dividers(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state,
struct dpll *reduced_clock)
{
struct drm_device *dev = crtc->base.dev;
u32 fp, fp2 = 0;
if (IS_PINEVIEW(dev)) {
fp = pnv_dpll_compute_fp(&crtc_state->dpll);
if (reduced_clock)
fp2 = pnv_dpll_compute_fp(reduced_clock);
} else {
fp = i9xx_dpll_compute_fp(&crtc_state->dpll);
if (reduced_clock)
fp2 = i9xx_dpll_compute_fp(reduced_clock);
}
crtc_state->dpll_hw_state.fp0 = fp;
crtc->lowfreq_avail = false;
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
reduced_clock) {
crtc_state->dpll_hw_state.fp1 = fp2;
crtc->lowfreq_avail = true;
} else {
crtc_state->dpll_hw_state.fp1 = fp;
}
}
static void vlv_pllb_recal_opamp(struct drm_i915_private *dev_priv, enum pipe
pipe)
{
u32 reg_val;
/*
* PLLB opamp always calibrates to max value of 0x3f, force enable it
* and set it to a reasonable value instead.
*/
reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));
reg_val &= 0xffffff00;
reg_val |= 0x00000030;
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val);
reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13);
reg_val &= 0x8cffffff;
reg_val = 0x8c000000;
vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));
reg_val &= 0xffffff00;
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val);
reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13);
reg_val &= 0x00ffffff;
reg_val |= 0xb0000000;
vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
}
static void intel_pch_transcoder_set_m_n(struct intel_crtc *crtc,
struct intel_link_m_n *m_n)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
int pipe = crtc->pipe;
I915_WRITE(PCH_TRANS_DATA_M1(pipe), TU_SIZE(m_n->tu) | m_n->gmch_m);
I915_WRITE(PCH_TRANS_DATA_N1(pipe), m_n->gmch_n);
I915_WRITE(PCH_TRANS_LINK_M1(pipe), m_n->link_m);
I915_WRITE(PCH_TRANS_LINK_N1(pipe), m_n->link_n);
}
static void intel_cpu_transcoder_set_m_n(struct intel_crtc *crtc,
struct intel_link_m_n *m_n,
struct intel_link_m_n *m2_n2)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
int pipe = crtc->pipe;
enum transcoder transcoder = crtc->config->cpu_transcoder;
if (INTEL_INFO(dev)->gen >= 5) {
I915_WRITE(PIPE_DATA_M1(transcoder), TU_SIZE(m_n->tu) | m_n->gmch_m);
I915_WRITE(PIPE_DATA_N1(transcoder), m_n->gmch_n);
I915_WRITE(PIPE_LINK_M1(transcoder), m_n->link_m);
I915_WRITE(PIPE_LINK_N1(transcoder), m_n->link_n);
/* M2_N2 registers to be set only for gen < 8 (M2_N2 available
* for gen < 8) and if DRRS is supported (to make sure the
* registers are not unnecessarily accessed).
*/
if (m2_n2 && (IS_CHERRYVIEW(dev) || INTEL_INFO(dev)->gen < 8) &&
crtc->config->has_drrs) {
I915_WRITE(PIPE_DATA_M2(transcoder),
TU_SIZE(m2_n2->tu) | m2_n2->gmch_m);
I915_WRITE(PIPE_DATA_N2(transcoder), m2_n2->gmch_n);
I915_WRITE(PIPE_LINK_M2(transcoder), m2_n2->link_m);
I915_WRITE(PIPE_LINK_N2(transcoder), m2_n2->link_n);
}
} else {
I915_WRITE(PIPE_DATA_M_G4X(pipe), TU_SIZE(m_n->tu) | m_n->gmch_m);
I915_WRITE(PIPE_DATA_N_G4X(pipe), m_n->gmch_n);
I915_WRITE(PIPE_LINK_M_G4X(pipe), m_n->link_m);
I915_WRITE(PIPE_LINK_N_G4X(pipe), m_n->link_n);
}
}
void intel_dp_set_m_n(struct intel_crtc *crtc, enum link_m_n_set m_n)
{
struct intel_link_m_n *dp_m_n, *dp_m2_n2 = NULL;
if (m_n == M1_N1) {
dp_m_n = &crtc->config->dp_m_n;
dp_m2_n2 = &crtc->config->dp_m2_n2;
} else if (m_n == M2_N2) {
/*
* M2_N2 registers are not supported. Hence m2_n2 divider value
* needs to be programmed into M1_N1.
*/
dp_m_n = &crtc->config->dp_m2_n2;
} else {
DRM_ERROR("Unsupported divider value\n");
return;
}
if (crtc->config->has_pch_encoder)
intel_pch_transcoder_set_m_n(crtc, &crtc->config->dp_m_n);
else
intel_cpu_transcoder_set_m_n(crtc, dp_m_n, dp_m2_n2);
}
static void vlv_compute_dpll(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
pipe_config->dpll_hw_state.dpll = DPLL_INTEGRATED_REF_CLK_VLV |
DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
if (crtc->pipe != PIPE_A)
pipe_config->dpll_hw_state.dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
/* DPLL not used with DSI, but still need the rest set up */
if (!intel_crtc_has_type(pipe_config, INTEL_OUTPUT_DSI))
pipe_config->dpll_hw_state.dpll |= DPLL_VCO_ENABLE |
DPLL_EXT_BUFFER_ENABLE_VLV;
pipe_config->dpll_hw_state.dpll_md =
(pipe_config->pixel_multiplier - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
}
static void chv_compute_dpll(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
pipe_config->dpll_hw_state.dpll = DPLL_SSC_REF_CLK_CHV |
DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
if (crtc->pipe != PIPE_A)
pipe_config->dpll_hw_state.dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
/* DPLL not used with DSI, but still need the rest set up */
if (!intel_crtc_has_type(pipe_config, INTEL_OUTPUT_DSI))
pipe_config->dpll_hw_state.dpll |= DPLL_VCO_ENABLE;
pipe_config->dpll_hw_state.dpll_md =
(pipe_config->pixel_multiplier - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
}
static void vlv_prepare_pll(struct intel_crtc *crtc,
const struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe = crtc->pipe;
u32 mdiv;
u32 bestn, bestm1, bestm2, bestp1, bestp2;
u32 coreclk, reg_val;
/* Enable Refclk */
I915_WRITE(DPLL(pipe),
pipe_config->dpll_hw_state.dpll &
~(DPLL_VCO_ENABLE | DPLL_EXT_BUFFER_ENABLE_VLV));
/* No need to actually set up the DPLL with DSI */
if ((pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0)
return;
mutex_lock(&dev_priv->sb_lock);
bestn = pipe_config->dpll.n;
bestm1 = pipe_config->dpll.m1;
bestm2 = pipe_config->dpll.m2;
bestp1 = pipe_config->dpll.p1;
bestp2 = pipe_config->dpll.p2;
/* See eDP HDMI DPIO driver vbios notes doc */
/* PLL B needs special handling */
if (pipe == PIPE_B)
vlv_pllb_recal_opamp(dev_priv, pipe);
/* Set up Tx target for periodic Rcomp update */
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9_BCAST, 0x0100000f);
/* Disable target IRef on PLL */
reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW8(pipe));
reg_val &= 0x00ffffff;
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW8(pipe), reg_val);
/* Disable fast lock */
vlv_dpio_write(dev_priv, pipe, VLV_CMN_DW0, 0x610);
/* Set idtafcrecal before PLL is enabled */
mdiv = ((bestm1 << DPIO_M1DIV_SHIFT) | (bestm2 & DPIO_M2DIV_MASK));
mdiv |= ((bestp1 << DPIO_P1_SHIFT) | (bestp2 << DPIO_P2_SHIFT));
mdiv |= ((bestn << DPIO_N_SHIFT));
mdiv |= (1 << DPIO_K_SHIFT);
/*
* Post divider depends on pixel clock rate, DAC vs digital (and LVDS,
* but we don't support that).
* Note: don't use the DAC post divider as it seems unstable.
*/
mdiv |= (DPIO_POST_DIV_HDMIDP << DPIO_POST_DIV_SHIFT);
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv);
mdiv |= DPIO_ENABLE_CALIBRATION;
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv);
/* Set HBR and RBR LPF coefficients */
if (pipe_config->port_clock == 162000 ||
intel_crtc_has_type(crtc->config, INTEL_OUTPUT_ANALOG) ||
intel_crtc_has_type(crtc->config, INTEL_OUTPUT_HDMI))
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe),
0x009f0003);
else
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe),
0x00d0000f);
if (intel_crtc_has_dp_encoder(pipe_config)) {
/* Use SSC source */
if (pipe == PIPE_A)
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
0x0df40000);
else
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
0x0df70000);
} else { /* HDMI or VGA */
/* Use bend source */
if (pipe == PIPE_A)
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
0x0df70000);
else
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
0x0df40000);
}
coreclk = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW7(pipe));
coreclk = (coreclk & 0x0000ff00) | 0x01c00000;
if (intel_crtc_has_dp_encoder(crtc->config))
coreclk |= 0x01000000;
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW7(pipe), coreclk);
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW11(pipe), 0x87871000);
mutex_unlock(&dev_priv->sb_lock);
}
static void chv_prepare_pll(struct intel_crtc *crtc,
const struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe = crtc->pipe;
enum dpio_channel port = vlv_pipe_to_channel(pipe);
u32 loopfilter, tribuf_calcntr;
u32 bestn, bestm1, bestm2, bestp1, bestp2, bestm2_frac;
u32 dpio_val;
int vco;
/* Enable Refclk and SSC */
I915_WRITE(DPLL(pipe),
pipe_config->dpll_hw_state.dpll & ~DPLL_VCO_ENABLE);
/* No need to actually set up the DPLL with DSI */
if ((pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0)
return;
bestn = pipe_config->dpll.n;
bestm2_frac = pipe_config->dpll.m2 & 0x3fffff;
bestm1 = pipe_config->dpll.m1;
bestm2 = pipe_config->dpll.m2 >> 22;
bestp1 = pipe_config->dpll.p1;
bestp2 = pipe_config->dpll.p2;
vco = pipe_config->dpll.vco;
dpio_val = 0;
loopfilter = 0;
mutex_lock(&dev_priv->sb_lock);
/* p1 and p2 divider */
vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW13(port),
5 << DPIO_CHV_S1_DIV_SHIFT |
bestp1 << DPIO_CHV_P1_DIV_SHIFT |
bestp2 << DPIO_CHV_P2_DIV_SHIFT |
1 << DPIO_CHV_K_DIV_SHIFT);
/* Feedback post-divider - m2 */
vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW0(port), bestm2);
/* Feedback refclk divider - n and m1 */
vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW1(port),
DPIO_CHV_M1_DIV_BY_2 |
1 << DPIO_CHV_N_DIV_SHIFT);
/* M2 fraction division */
vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW2(port), bestm2_frac);
/* M2 fraction division enable */
dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW3(port));
dpio_val &= ~(DPIO_CHV_FEEDFWD_GAIN_MASK | DPIO_CHV_FRAC_DIV_EN);
dpio_val |= (2 << DPIO_CHV_FEEDFWD_GAIN_SHIFT);
if (bestm2_frac)
dpio_val |= DPIO_CHV_FRAC_DIV_EN;
vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW3(port), dpio_val);
/* Program digital lock detect threshold */
dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW9(port));
dpio_val &= ~(DPIO_CHV_INT_LOCK_THRESHOLD_MASK |
DPIO_CHV_INT_LOCK_THRESHOLD_SEL_COARSE);
dpio_val |= (0x5 << DPIO_CHV_INT_LOCK_THRESHOLD_SHIFT);
if (!bestm2_frac)
dpio_val |= DPIO_CHV_INT_LOCK_THRESHOLD_SEL_COARSE;
vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW9(port), dpio_val);
/* Loop filter */
if (vco == 5400000) {
loopfilter |= (0x3 << DPIO_CHV_PROP_COEFF_SHIFT);
loopfilter |= (0x8 << DPIO_CHV_INT_COEFF_SHIFT);
loopfilter |= (0x1 << DPIO_CHV_GAIN_CTRL_SHIFT);
tribuf_calcntr = 0x9;
} else if (vco <= 6200000) {
loopfilter |= (0x5 << DPIO_CHV_PROP_COEFF_SHIFT);
loopfilter |= (0xB << DPIO_CHV_INT_COEFF_SHIFT);
loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
tribuf_calcntr = 0x9;
} else if (vco <= 6480000) {
loopfilter |= (0x4 << DPIO_CHV_PROP_COEFF_SHIFT);
loopfilter |= (0x9 << DPIO_CHV_INT_COEFF_SHIFT);
loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
tribuf_calcntr = 0x8;
} else {
/* Not supported. Apply the same limits as in the max case */
loopfilter |= (0x4 << DPIO_CHV_PROP_COEFF_SHIFT);
loopfilter |= (0x9 << DPIO_CHV_INT_COEFF_SHIFT);
loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
tribuf_calcntr = 0;
}
vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW6(port), loopfilter);
dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW8(port));
dpio_val &= ~DPIO_CHV_TDC_TARGET_CNT_MASK;
dpio_val |= (tribuf_calcntr << DPIO_CHV_TDC_TARGET_CNT_SHIFT);
vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW8(port), dpio_val);
/* AFC Recal */
vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port),
vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port)) |
DPIO_AFC_RECAL);
mutex_unlock(&dev_priv->sb_lock);
}
/**
* vlv_force_pll_on - forcibly enable just the PLL
* @dev_priv: i915 private structure
* @pipe: pipe PLL to enable
* @dpll: PLL configuration
*
* Enable the PLL for @pipe using the supplied @dpll config. To be used
* in cases where we need the PLL enabled even when @pipe is not going to
* be enabled.
*/
int vlv_force_pll_on(struct drm_device *dev, enum pipe pipe,
const struct dpll *dpll)
{
struct intel_crtc *crtc =
to_intel_crtc(intel_get_crtc_for_pipe(dev, pipe));
struct intel_crtc_state *pipe_config;
pipe_config = kzalloc(sizeof(*pipe_config), GFP_KERNEL);
if (!pipe_config)
return -ENOMEM;
pipe_config->base.crtc = &crtc->base;
pipe_config->pixel_multiplier = 1;
pipe_config->dpll = *dpll;
if (IS_CHERRYVIEW(dev)) {
chv_compute_dpll(crtc, pipe_config);
chv_prepare_pll(crtc, pipe_config);
chv_enable_pll(crtc, pipe_config);
} else {
vlv_compute_dpll(crtc, pipe_config);
vlv_prepare_pll(crtc, pipe_config);
vlv_enable_pll(crtc, pipe_config);
}
kfree(pipe_config);
return 0;
}
/**
* vlv_force_pll_off - forcibly disable just the PLL
* @dev_priv: i915 private structure
* @pipe: pipe PLL to disable
*
* Disable the PLL for @pipe. To be used in cases where we need
* the PLL enabled even when @pipe is not going to be enabled.
*/
void vlv_force_pll_off(struct drm_device *dev, enum pipe pipe)
{
if (IS_CHERRYVIEW(dev))
chv_disable_pll(to_i915(dev), pipe);
else
vlv_disable_pll(to_i915(dev), pipe);
}
static void i9xx_compute_dpll(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state,
struct dpll *reduced_clock)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
u32 dpll;
struct dpll *clock = &crtc_state->dpll;
i9xx_update_pll_dividers(crtc, crtc_state, reduced_clock);
dpll = DPLL_VGA_MODE_DIS;
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS))
dpll |= DPLLB_MODE_LVDS;
else
dpll |= DPLLB_MODE_DAC_SERIAL;
if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) {
dpll |= (crtc_state->pixel_multiplier - 1)
<< SDVO_MULTIPLIER_SHIFT_HIRES;
}
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO) ||
intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
dpll |= DPLL_SDVO_HIGH_SPEED;
if (intel_crtc_has_dp_encoder(crtc_state))
dpll |= DPLL_SDVO_HIGH_SPEED;
/* compute bitmask from p1 value */
if (IS_PINEVIEW(dev))
dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW;
else {
dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
if (IS_G4X(dev) && reduced_clock)
dpll |= (1 << (reduced_clock->p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
}
switch (clock->p2) {
case 5:
dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
break;
case 7:
dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
break;
case 10:
dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
break;
case 14:
dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
break;
}
if (INTEL_INFO(dev)->gen >= 4)
dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
if (crtc_state->sdvo_tv_clock)
dpll |= PLL_REF_INPUT_TVCLKINBC;
else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
intel_panel_use_ssc(dev_priv))
dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
else
dpll |= PLL_REF_INPUT_DREFCLK;
dpll |= DPLL_VCO_ENABLE;
crtc_state->dpll_hw_state.dpll = dpll;
if (INTEL_INFO(dev)->gen >= 4) {
u32 dpll_md = (crtc_state->pixel_multiplier - 1)
<< DPLL_MD_UDI_MULTIPLIER_SHIFT;
crtc_state->dpll_hw_state.dpll_md = dpll_md;
}
}
static void i8xx_compute_dpll(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state,
struct dpll *reduced_clock)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
u32 dpll;
struct dpll *clock = &crtc_state->dpll;
i9xx_update_pll_dividers(crtc, crtc_state, reduced_clock);
dpll = DPLL_VGA_MODE_DIS;
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
} else {
if (clock->p1 == 2)
dpll |= PLL_P1_DIVIDE_BY_TWO;
else
dpll |= (clock->p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
if (clock->p2 == 4)
dpll |= PLL_P2_DIVIDE_BY_4;
}
if (!IS_I830(dev) && intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DVO))
dpll |= DPLL_DVO_2X_MODE;
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
intel_panel_use_ssc(dev_priv))
dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
else
dpll |= PLL_REF_INPUT_DREFCLK;
dpll |= DPLL_VCO_ENABLE;
crtc_state->dpll_hw_state.dpll = dpll;
}
static void intel_set_pipe_timings(struct intel_crtc *intel_crtc)
{
struct drm_device *dev = intel_crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe = intel_crtc->pipe;
enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
const struct drm_display_mode *adjusted_mode = &intel_crtc->config->base.adjusted_mode;
uint32_t crtc_vtotal, crtc_vblank_end;
int vsyncshift = 0;
/* We need to be careful not to changed the adjusted mode, for otherwise
* the hw state checker will get angry at the mismatch. */
crtc_vtotal = adjusted_mode->crtc_vtotal;
crtc_vblank_end = adjusted_mode->crtc_vblank_end;
if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
/* the chip adds 2 halflines automatically */
crtc_vtotal -= 1;
crtc_vblank_end -= 1;
if (intel_crtc_has_type(intel_crtc->config, INTEL_OUTPUT_SDVO))
vsyncshift = (adjusted_mode->crtc_htotal - 1) / 2;
else
vsyncshift = adjusted_mode->crtc_hsync_start -
adjusted_mode->crtc_htotal / 2;
if (vsyncshift < 0)
vsyncshift += adjusted_mode->crtc_htotal;
}
if (INTEL_INFO(dev)->gen > 3)
I915_WRITE(VSYNCSHIFT(cpu_transcoder), vsyncshift);
I915_WRITE(HTOTAL(cpu_transcoder),
(adjusted_mode->crtc_hdisplay - 1) |
((adjusted_mode->crtc_htotal - 1) << 16));
I915_WRITE(HBLANK(cpu_transcoder),
(adjusted_mode->crtc_hblank_start - 1) |
((adjusted_mode->crtc_hblank_end - 1) << 16));
I915_WRITE(HSYNC(cpu_transcoder),
(adjusted_mode->crtc_hsync_start - 1) |
((adjusted_mode->crtc_hsync_end - 1) << 16));
I915_WRITE(VTOTAL(cpu_transcoder),
(adjusted_mode->crtc_vdisplay - 1) |
((crtc_vtotal - 1) << 16));
I915_WRITE(VBLANK(cpu_transcoder),
(adjusted_mode->crtc_vblank_start - 1) |
((crtc_vblank_end - 1) << 16));
I915_WRITE(VSYNC(cpu_transcoder),
(adjusted_mode->crtc_vsync_start - 1) |
((adjusted_mode->crtc_vsync_end - 1) << 16));
/* Workaround: when the EDP input selection is B, the VTOTAL_B must be
* programmed with the VTOTAL_EDP value. Same for VTOTAL_C. This is
* documented on the DDI_FUNC_CTL register description, EDP Input Select
* bits. */
if (IS_HASWELL(dev) && cpu_transcoder == TRANSCODER_EDP &&
(pipe == PIPE_B || pipe == PIPE_C))
I915_WRITE(VTOTAL(pipe), I915_READ(VTOTAL(cpu_transcoder)));
}
static void intel_set_pipe_src_size(struct intel_crtc *intel_crtc)
{
struct drm_device *dev = intel_crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe = intel_crtc->pipe;
/* pipesrc controls the size that is scaled from, which should
* always be the user's requested size.
*/
I915_WRITE(PIPESRC(pipe),
((intel_crtc->config->pipe_src_w - 1) << 16) |
(intel_crtc->config->pipe_src_h - 1));
}
static void intel_get_pipe_timings(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
uint32_t tmp;
tmp = I915_READ(HTOTAL(cpu_transcoder));
pipe_config->base.adjusted_mode.crtc_hdisplay = (tmp & 0xffff) + 1;
pipe_config->base.adjusted_mode.crtc_htotal = ((tmp >> 16) & 0xffff) + 1;
tmp = I915_READ(HBLANK(cpu_transcoder));
pipe_config->base.adjusted_mode.crtc_hblank_start = (tmp & 0xffff) + 1;
pipe_config->base.adjusted_mode.crtc_hblank_end = ((tmp >> 16) & 0xffff) + 1;
tmp = I915_READ(HSYNC(cpu_transcoder));
pipe_config->base.adjusted_mode.crtc_hsync_start = (tmp & 0xffff) + 1;
pipe_config->base.adjusted_mode.crtc_hsync_end = ((tmp >> 16) & 0xffff) + 1;
tmp = I915_READ(VTOTAL(cpu_transcoder));
pipe_config->base.adjusted_mode.crtc_vdisplay = (tmp & 0xffff) + 1;
pipe_config->base.adjusted_mode.crtc_vtotal = ((tmp >> 16) & 0xffff) + 1;
tmp = I915_READ(VBLANK(cpu_transcoder));
pipe_config->base.adjusted_mode.crtc_vblank_start = (tmp & 0xffff) + 1;
pipe_config->base.adjusted_mode.crtc_vblank_end = ((tmp >> 16) & 0xffff) + 1;
tmp = I915_READ(VSYNC(cpu_transcoder));
pipe_config->base.adjusted_mode.crtc_vsync_start = (tmp & 0xffff) + 1;
pipe_config->base.adjusted_mode.crtc_vsync_end = ((tmp >> 16) & 0xffff) + 1;
if (I915_READ(PIPECONF(cpu_transcoder)) & PIPECONF_INTERLACE_MASK) {
pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_INTERLACE;
pipe_config->base.adjusted_mode.crtc_vtotal += 1;
pipe_config->base.adjusted_mode.crtc_vblank_end += 1;
}
}
static void intel_get_pipe_src_size(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
u32 tmp;
tmp = I915_READ(PIPESRC(crtc->pipe));
pipe_config->pipe_src_h = (tmp & 0xffff) + 1;
pipe_config->pipe_src_w = ((tmp >> 16) & 0xffff) + 1;
pipe_config->base.mode.vdisplay = pipe_config->pipe_src_h;
pipe_config->base.mode.hdisplay = pipe_config->pipe_src_w;
}
void intel_mode_from_pipe_config(struct drm_display_mode *mode,
struct intel_crtc_state *pipe_config)
{
mode->hdisplay = pipe_config->base.adjusted_mode.crtc_hdisplay;
mode->htotal = pipe_config->base.adjusted_mode.crtc_htotal;
mode->hsync_start = pipe_config->base.adjusted_mode.crtc_hsync_start;
mode->hsync_end = pipe_config->base.adjusted_mode.crtc_hsync_end;
mode->vdisplay = pipe_config->base.adjusted_mode.crtc_vdisplay;
mode->vtotal = pipe_config->base.adjusted_mode.crtc_vtotal;
mode->vsync_start = pipe_config->base.adjusted_mode.crtc_vsync_start;
mode->vsync_end = pipe_config->base.adjusted_mode.crtc_vsync_end;
mode->flags = pipe_config->base.adjusted_mode.flags;
mode->type = DRM_MODE_TYPE_DRIVER;
mode->clock = pipe_config->base.adjusted_mode.crtc_clock;
mode->flags |= pipe_config->base.adjusted_mode.flags;
mode->hsync = drm_mode_hsync(mode);
mode->vrefresh = drm_mode_vrefresh(mode);
drm_mode_set_name(mode);
}
static void i9xx_set_pipeconf(struct intel_crtc *intel_crtc)
{
struct drm_device *dev = intel_crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
uint32_t pipeconf;
pipeconf = 0;
if ((intel_crtc->pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
(intel_crtc->pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
pipeconf |= I915_READ(PIPECONF(intel_crtc->pipe)) & PIPECONF_ENABLE;
if (intel_crtc->config->double_wide)
pipeconf |= PIPECONF_DOUBLE_WIDE;
/* only g4x and later have fancy bpc/dither controls */
if (IS_G4X(dev) || IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) {
/* Bspec claims that we can't use dithering for 30bpp pipes. */
if (intel_crtc->config->dither && intel_crtc->config->pipe_bpp != 30)
pipeconf |= PIPECONF_DITHER_EN |
PIPECONF_DITHER_TYPE_SP;
switch (intel_crtc->config->pipe_bpp) {
case 18:
pipeconf |= PIPECONF_6BPC;
break;
case 24:
pipeconf |= PIPECONF_8BPC;
break;
case 30:
pipeconf |= PIPECONF_10BPC;
break;
default:
/* Case prevented by intel_choose_pipe_bpp_dither. */
BUG();
}
}
if (HAS_PIPE_CXSR(dev)) {
if (intel_crtc->lowfreq_avail) {
DRM_DEBUG_KMS("enabling CxSR downclocking\n");
pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
} else {
DRM_DEBUG_KMS("disabling CxSR downclocking\n");
}
}
if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) {
if (INTEL_INFO(dev)->gen < 4 ||
intel_crtc_has_type(intel_crtc->config, INTEL_OUTPUT_SDVO))
pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
else
pipeconf |= PIPECONF_INTERLACE_W_SYNC_SHIFT;
} else
pipeconf |= PIPECONF_PROGRESSIVE;
if ((IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) &&
intel_crtc->config->limited_color_range)
pipeconf |= PIPECONF_COLOR_RANGE_SELECT;
I915_WRITE(PIPECONF(intel_crtc->pipe), pipeconf);
POSTING_READ(PIPECONF(intel_crtc->pipe));
}
static int i8xx_crtc_compute_clock(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
const struct intel_limit *limit;
int refclk = 48000;
memset(&crtc_state->dpll_hw_state, 0,
sizeof(crtc_state->dpll_hw_state));
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
if (intel_panel_use_ssc(dev_priv)) {
refclk = dev_priv->vbt.lvds_ssc_freq;
DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
}
limit = &intel_limits_i8xx_lvds;
} else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DVO)) {
limit = &intel_limits_i8xx_dvo;
} else {
limit = &intel_limits_i8xx_dac;
}
if (!crtc_state->clock_set &&
!i9xx_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
refclk, NULL, &crtc_state->dpll)) {
DRM_ERROR("Couldn't find PLL settings for mode!\n");
return -EINVAL;
}
i8xx_compute_dpll(crtc, crtc_state, NULL);
return 0;
}
static int g4x_crtc_compute_clock(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
const struct intel_limit *limit;
int refclk = 96000;
memset(&crtc_state->dpll_hw_state, 0,
sizeof(crtc_state->dpll_hw_state));
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
if (intel_panel_use_ssc(dev_priv)) {
refclk = dev_priv->vbt.lvds_ssc_freq;
DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
}
if (intel_is_dual_link_lvds(dev))
limit = &intel_limits_g4x_dual_channel_lvds;
else
limit = &intel_limits_g4x_single_channel_lvds;
} else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI) ||
intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG)) {
limit = &intel_limits_g4x_hdmi;
} else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO)) {
limit = &intel_limits_g4x_sdvo;
} else {
/* The option is for other outputs */
limit = &intel_limits_i9xx_sdvo;
}
if (!crtc_state->clock_set &&
!g4x_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
refclk, NULL, &crtc_state->dpll)) {
DRM_ERROR("Couldn't find PLL settings for mode!\n");
return -EINVAL;
}
i9xx_compute_dpll(crtc, crtc_state, NULL);
return 0;
}
static int pnv_crtc_compute_clock(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
const struct intel_limit *limit;
int refclk = 96000;
memset(&crtc_state->dpll_hw_state, 0,
sizeof(crtc_state->dpll_hw_state));
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
if (intel_panel_use_ssc(dev_priv)) {
refclk = dev_priv->vbt.lvds_ssc_freq;
DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
}
limit = &intel_limits_pineview_lvds;
} else {
limit = &intel_limits_pineview_sdvo;
}
if (!crtc_state->clock_set &&
!pnv_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
refclk, NULL, &crtc_state->dpll)) {
DRM_ERROR("Couldn't find PLL settings for mode!\n");
return -EINVAL;
}
i9xx_compute_dpll(crtc, crtc_state, NULL);
return 0;
}
static int i9xx_crtc_compute_clock(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
const struct intel_limit *limit;
int refclk = 96000;
memset(&crtc_state->dpll_hw_state, 0,
sizeof(crtc_state->dpll_hw_state));
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
if (intel_panel_use_ssc(dev_priv)) {
refclk = dev_priv->vbt.lvds_ssc_freq;
DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
}
limit = &intel_limits_i9xx_lvds;
} else {
limit = &intel_limits_i9xx_sdvo;
}
if (!crtc_state->clock_set &&
!i9xx_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
refclk, NULL, &crtc_state->dpll)) {
DRM_ERROR("Couldn't find PLL settings for mode!\n");
return -EINVAL;
}
i9xx_compute_dpll(crtc, crtc_state, NULL);
return 0;
}
static int chv_crtc_compute_clock(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state)
{
int refclk = 100000;
const struct intel_limit *limit = &intel_limits_chv;
memset(&crtc_state->dpll_hw_state, 0,
sizeof(crtc_state->dpll_hw_state));
if (!crtc_state->clock_set &&
!chv_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
refclk, NULL, &crtc_state->dpll)) {
DRM_ERROR("Couldn't find PLL settings for mode!\n");
return -EINVAL;
}
chv_compute_dpll(crtc, crtc_state);
return 0;
}
static int vlv_crtc_compute_clock(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state)
{
int refclk = 100000;
const struct intel_limit *limit = &intel_limits_vlv;
memset(&crtc_state->dpll_hw_state, 0,
sizeof(crtc_state->dpll_hw_state));
if (!crtc_state->clock_set &&
!vlv_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
refclk, NULL, &crtc_state->dpll)) {
DRM_ERROR("Couldn't find PLL settings for mode!\n");
return -EINVAL;
}
vlv_compute_dpll(crtc, crtc_state);
return 0;
}
static void i9xx_get_pfit_config(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
uint32_t tmp;
if (INTEL_INFO(dev)->gen <= 3 && (IS_I830(dev) || !IS_MOBILE(dev)))
return;
tmp = I915_READ(PFIT_CONTROL);
if (!(tmp & PFIT_ENABLE))
return;
/* Check whether the pfit is attached to our pipe. */
if (INTEL_INFO(dev)->gen < 4) {
if (crtc->pipe != PIPE_B)
return;
} else {
if ((tmp & PFIT_PIPE_MASK) != (crtc->pipe << PFIT_PIPE_SHIFT))
return;
}
pipe_config->gmch_pfit.control = tmp;
pipe_config->gmch_pfit.pgm_ratios = I915_READ(PFIT_PGM_RATIOS);
}
static void vlv_crtc_clock_get(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
int pipe = pipe_config->cpu_transcoder;
struct dpll clock;
u32 mdiv;
int refclk = 100000;
/* In case of DSI, DPLL will not be used */
if ((pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0)
return;
mutex_lock(&dev_priv->sb_lock);
mdiv = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW3(pipe));
mutex_unlock(&dev_priv->sb_lock);
clock.m1 = (mdiv >> DPIO_M1DIV_SHIFT) & 7;
clock.m2 = mdiv & DPIO_M2DIV_MASK;
clock.n = (mdiv >> DPIO_N_SHIFT) & 0xf;
clock.p1 = (mdiv >> DPIO_P1_SHIFT) & 7;
clock.p2 = (mdiv >> DPIO_P2_SHIFT) & 0x1f;
pipe_config->port_clock = vlv_calc_dpll_params(refclk, &clock);
}
static void
i9xx_get_initial_plane_config(struct intel_crtc *crtc,
struct intel_initial_plane_config *plane_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
u32 val, base, offset;
int pipe = crtc->pipe, plane = crtc->plane;
int fourcc, pixel_format;
unsigned int aligned_height;
struct drm_framebuffer *fb;
struct intel_framebuffer *intel_fb;
val = I915_READ(DSPCNTR(plane));
if (!(val & DISPLAY_PLANE_ENABLE))
return;
intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
if (!intel_fb) {
DRM_DEBUG_KMS("failed to alloc fb\n");
return;
}
fb = &intel_fb->base;
if (INTEL_INFO(dev)->gen >= 4) {
if (val & DISPPLANE_TILED) {
plane_config->tiling = I915_TILING_X;
fb->modifier[0] = I915_FORMAT_MOD_X_TILED;
}
}
pixel_format = val & DISPPLANE_PIXFORMAT_MASK;
fourcc = i9xx_format_to_fourcc(pixel_format);
fb->pixel_format = fourcc;
fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8;
if (INTEL_INFO(dev)->gen >= 4) {
if (plane_config->tiling)
offset = I915_READ(DSPTILEOFF(plane));
else
offset = I915_READ(DSPLINOFF(plane));
base = I915_READ(DSPSURF(plane)) & 0xfffff000;
} else {
base = I915_READ(DSPADDR(plane));
}
plane_config->base = base;
val = I915_READ(PIPESRC(pipe));
fb->width = ((val >> 16) & 0xfff) + 1;
fb->height = ((val >> 0) & 0xfff) + 1;
val = I915_READ(DSPSTRIDE(pipe));
fb->pitches[0] = val & 0xffffffc0;
aligned_height = intel_fb_align_height(dev, fb->height,
fb->pixel_format,
fb->modifier[0]);
plane_config->size = fb->pitches[0] * aligned_height;
DRM_DEBUG_KMS("pipe/plane %c/%d with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
pipe_name(pipe), plane, fb->width, fb->height,
fb->bits_per_pixel, base, fb->pitches[0],
plane_config->size);
plane_config->fb = intel_fb;
}
static void chv_crtc_clock_get(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
int pipe = pipe_config->cpu_transcoder;
enum dpio_channel port = vlv_pipe_to_channel(pipe);
struct dpll clock;
u32 cmn_dw13, pll_dw0, pll_dw1, pll_dw2, pll_dw3;
int refclk = 100000;
/* In case of DSI, DPLL will not be used */
if ((pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0)
return;
mutex_lock(&dev_priv->sb_lock);
cmn_dw13 = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW13(port));
pll_dw0 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW0(port));
pll_dw1 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW1(port));
pll_dw2 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW2(port));
pll_dw3 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW3(port));
mutex_unlock(&dev_priv->sb_lock);
clock.m1 = (pll_dw1 & 0x7) == DPIO_CHV_M1_DIV_BY_2 ? 2 : 0;
clock.m2 = (pll_dw0 & 0xff) << 22;
if (pll_dw3 & DPIO_CHV_FRAC_DIV_EN)
clock.m2 |= pll_dw2 & 0x3fffff;
clock.n = (pll_dw1 >> DPIO_CHV_N_DIV_SHIFT) & 0xf;
clock.p1 = (cmn_dw13 >> DPIO_CHV_P1_DIV_SHIFT) & 0x7;
clock.p2 = (cmn_dw13 >> DPIO_CHV_P2_DIV_SHIFT) & 0x1f;
pipe_config->port_clock = chv_calc_dpll_params(refclk, &clock);
}
static bool i9xx_get_pipe_config(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum intel_display_power_domain power_domain;
uint32_t tmp;
bool ret;
power_domain = POWER_DOMAIN_PIPE(crtc->pipe);
if (!intel_display_power_get_if_enabled(dev_priv, power_domain))
return false;
pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
pipe_config->shared_dpll = NULL;
ret = false;
tmp = I915_READ(PIPECONF(crtc->pipe));
if (!(tmp & PIPECONF_ENABLE))
goto out;
if (IS_G4X(dev) || IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) {
switch (tmp & PIPECONF_BPC_MASK) {
case PIPECONF_6BPC:
pipe_config->pipe_bpp = 18;
break;
case PIPECONF_8BPC:
pipe_config->pipe_bpp = 24;
break;
case PIPECONF_10BPC:
pipe_config->pipe_bpp = 30;
break;
default:
break;
}
}
if ((IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) &&
(tmp & PIPECONF_COLOR_RANGE_SELECT))
pipe_config->limited_color_range = true;
if (INTEL_INFO(dev)->gen < 4)
pipe_config->double_wide = tmp & PIPECONF_DOUBLE_WIDE;
intel_get_pipe_timings(crtc, pipe_config);
intel_get_pipe_src_size(crtc, pipe_config);
i9xx_get_pfit_config(crtc, pipe_config);
if (INTEL_INFO(dev)->gen >= 4) {
/* No way to read it out on pipes B and C */
if (IS_CHERRYVIEW(dev) && crtc->pipe != PIPE_A)
tmp = dev_priv->chv_dpll_md[crtc->pipe];
else
tmp = I915_READ(DPLL_MD(crtc->pipe));
pipe_config->pixel_multiplier =
((tmp & DPLL_MD_UDI_MULTIPLIER_MASK)
>> DPLL_MD_UDI_MULTIPLIER_SHIFT) + 1;
pipe_config->dpll_hw_state.dpll_md = tmp;
} else if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) {
tmp = I915_READ(DPLL(crtc->pipe));
pipe_config->pixel_multiplier =
((tmp & SDVO_MULTIPLIER_MASK)
>> SDVO_MULTIPLIER_SHIFT_HIRES) + 1;
} else {
/* Note that on i915G/GM the pixel multiplier is in the sdvo
* port and will be fixed up in the encoder->get_config
* function. */
pipe_config->pixel_multiplier = 1;
}
pipe_config->dpll_hw_state.dpll = I915_READ(DPLL(crtc->pipe));
if (!IS_VALLEYVIEW(dev) && !IS_CHERRYVIEW(dev)) {
/*
* DPLL_DVO_2X_MODE must be enabled for both DPLLs
* on 830. Filter it out here so that we don't
* report errors due to that.
*/
if (IS_I830(dev))
pipe_config->dpll_hw_state.dpll &= ~DPLL_DVO_2X_MODE;
pipe_config->dpll_hw_state.fp0 = I915_READ(FP0(crtc->pipe));
pipe_config->dpll_hw_state.fp1 = I915_READ(FP1(crtc->pipe));
} else {
/* Mask out read-only status bits. */
pipe_config->dpll_hw_state.dpll &= ~(DPLL_LOCK_VLV |
DPLL_PORTC_READY_MASK |
DPLL_PORTB_READY_MASK);
}
if (IS_CHERRYVIEW(dev))
chv_crtc_clock_get(crtc, pipe_config);
else if (IS_VALLEYVIEW(dev))
vlv_crtc_clock_get(crtc, pipe_config);
else
i9xx_crtc_clock_get(crtc, pipe_config);
/*
* Normally the dotclock is filled in by the encoder .get_config()
* but in case the pipe is enabled w/o any ports we need a sane
* default.
*/
pipe_config->base.adjusted_mode.crtc_clock =
pipe_config->port_clock / pipe_config->pixel_multiplier;
ret = true;
out:
intel_display_power_put(dev_priv, power_domain);
return ret;
}
static void ironlake_init_pch_refclk(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_encoder *encoder;
int i;
u32 val, final;
bool has_lvds = false;
bool has_cpu_edp = false;
bool has_panel = false;
bool has_ck505 = false;
bool can_ssc = false;
bool using_ssc_source = false;
/* We need to take the global config into account */
for_each_intel_encoder(dev, encoder) {
switch (encoder->type) {
case INTEL_OUTPUT_LVDS:
has_panel = true;
has_lvds = true;
break;
case INTEL_OUTPUT_EDP:
has_panel = true;
if (enc_to_dig_port(&encoder->base)->port == PORT_A)
has_cpu_edp = true;
break;
default:
break;
}
}
if (HAS_PCH_IBX(dev)) {
has_ck505 = dev_priv->vbt.display_clock_mode;
can_ssc = has_ck505;
} else {
has_ck505 = false;
can_ssc = true;
}
/* Check if any DPLLs are using the SSC source */
for (i = 0; i < dev_priv->num_shared_dpll; i++) {
u32 temp = I915_READ(PCH_DPLL(i));
if (!(temp & DPLL_VCO_ENABLE))
continue;
if ((temp & PLL_REF_INPUT_MASK) ==
PLLB_REF_INPUT_SPREADSPECTRUMIN) {
using_ssc_source = true;
break;
}
}
DRM_DEBUG_KMS("has_panel %d has_lvds %d has_ck505 %d using_ssc_source %d\n",
has_panel, has_lvds, has_ck505, using_ssc_source);
/* Ironlake: try to setup display ref clock before DPLL
* enabling. This is only under driver's control after
* PCH B stepping, previous chipset stepping should be
* ignoring this setting.
*/
val = I915_READ(PCH_DREF_CONTROL);
/* As we must carefully and slowly disable/enable each source in turn,
* compute the final state we want first and check if we need to
* make any changes at all.
*/
final = val;
final &= ~DREF_NONSPREAD_SOURCE_MASK;
if (has_ck505)
final |= DREF_NONSPREAD_CK505_ENABLE;
else
final |= DREF_NONSPREAD_SOURCE_ENABLE;
final &= ~DREF_SSC_SOURCE_MASK;
final &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
final &= ~DREF_SSC1_ENABLE;
if (has_panel) {
final |= DREF_SSC_SOURCE_ENABLE;
if (intel_panel_use_ssc(dev_priv) && can_ssc)
final |= DREF_SSC1_ENABLE;
if (has_cpu_edp) {
if (intel_panel_use_ssc(dev_priv) && can_ssc)
final |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
else
final |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
} else
final |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
} else if (using_ssc_source) {
final |= DREF_SSC_SOURCE_ENABLE;
final |= DREF_SSC1_ENABLE;
}
if (final == val)
return;
/* Always enable nonspread source */
val &= ~DREF_NONSPREAD_SOURCE_MASK;
if (has_ck505)
val |= DREF_NONSPREAD_CK505_ENABLE;
else
val |= DREF_NONSPREAD_SOURCE_ENABLE;
if (has_panel) {
val &= ~DREF_SSC_SOURCE_MASK;
val |= DREF_SSC_SOURCE_ENABLE;
/* SSC must be turned on before enabling the CPU output */
if (intel_panel_use_ssc(dev_priv) && can_ssc) {
DRM_DEBUG_KMS("Using SSC on panel\n");
val |= DREF_SSC1_ENABLE;
} else
val &= ~DREF_SSC1_ENABLE;
/* Get SSC going before enabling the outputs */
I915_WRITE(PCH_DREF_CONTROL, val);
POSTING_READ(PCH_DREF_CONTROL);
udelay(200);
val &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
/* Enable CPU source on CPU attached eDP */
if (has_cpu_edp) {
if (intel_panel_use_ssc(dev_priv) && can_ssc) {
DRM_DEBUG_KMS("Using SSC on eDP\n");
val |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
} else
val |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
} else
val |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
I915_WRITE(PCH_DREF_CONTROL, val);
POSTING_READ(PCH_DREF_CONTROL);
udelay(200);
} else {
DRM_DEBUG_KMS("Disabling CPU source output\n");
val &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
/* Turn off CPU output */
val |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
I915_WRITE(PCH_DREF_CONTROL, val);
POSTING_READ(PCH_DREF_CONTROL);
udelay(200);
if (!using_ssc_source) {
DRM_DEBUG_KMS("Disabling SSC source\n");
/* Turn off the SSC source */
val &= ~DREF_SSC_SOURCE_MASK;
val |= DREF_SSC_SOURCE_DISABLE;
/* Turn off SSC1 */
val &= ~DREF_SSC1_ENABLE;
I915_WRITE(PCH_DREF_CONTROL, val);
POSTING_READ(PCH_DREF_CONTROL);
udelay(200);
}
}
BUG_ON(val != final);
}
static void lpt_reset_fdi_mphy(struct drm_i915_private *dev_priv)
{
uint32_t tmp;
tmp = I915_READ(SOUTH_CHICKEN2);
tmp |= FDI_MPHY_IOSFSB_RESET_CTL;
I915_WRITE(SOUTH_CHICKEN2, tmp);
if (wait_for_us(I915_READ(SOUTH_CHICKEN2) &
FDI_MPHY_IOSFSB_RESET_STATUS, 100))
DRM_ERROR("FDI mPHY reset assert timeout\n");
tmp = I915_READ(SOUTH_CHICKEN2);
tmp &= ~FDI_MPHY_IOSFSB_RESET_CTL;
I915_WRITE(SOUTH_CHICKEN2, tmp);
if (wait_for_us((I915_READ(SOUTH_CHICKEN2) &
FDI_MPHY_IOSFSB_RESET_STATUS) == 0, 100))
DRM_ERROR("FDI mPHY reset de-assert timeout\n");
}
/* WaMPhyProgramming:hsw */
static void lpt_program_fdi_mphy(struct drm_i915_private *dev_priv)
{
uint32_t tmp;
tmp = intel_sbi_read(dev_priv, 0x8008, SBI_MPHY);
tmp &= ~(0xFF << 24);
tmp |= (0x12 << 24);
intel_sbi_write(dev_priv, 0x8008, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x2008, SBI_MPHY);
tmp |= (1 << 11);
intel_sbi_write(dev_priv, 0x2008, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x2108, SBI_MPHY);
tmp |= (1 << 11);
intel_sbi_write(dev_priv, 0x2108, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x206C, SBI_MPHY);
tmp |= (1 << 24) | (1 << 21) | (1 << 18);
intel_sbi_write(dev_priv, 0x206C, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x216C, SBI_MPHY);
tmp |= (1 << 24) | (1 << 21) | (1 << 18);
intel_sbi_write(dev_priv, 0x216C, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x2080, SBI_MPHY);
tmp &= ~(7 << 13);
tmp |= (5 << 13);
intel_sbi_write(dev_priv, 0x2080, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x2180, SBI_MPHY);
tmp &= ~(7 << 13);
tmp |= (5 << 13);
intel_sbi_write(dev_priv, 0x2180, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x208C, SBI_MPHY);
tmp &= ~0xFF;
tmp |= 0x1C;
intel_sbi_write(dev_priv, 0x208C, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x218C, SBI_MPHY);
tmp &= ~0xFF;
tmp |= 0x1C;
intel_sbi_write(dev_priv, 0x218C, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x2098, SBI_MPHY);
tmp &= ~(0xFF << 16);
tmp |= (0x1C << 16);
intel_sbi_write(dev_priv, 0x2098, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x2198, SBI_MPHY);
tmp &= ~(0xFF << 16);
tmp |= (0x1C << 16);
intel_sbi_write(dev_priv, 0x2198, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x20C4, SBI_MPHY);
tmp |= (1 << 27);
intel_sbi_write(dev_priv, 0x20C4, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x21C4, SBI_MPHY);
tmp |= (1 << 27);
intel_sbi_write(dev_priv, 0x21C4, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x20EC, SBI_MPHY);
tmp &= ~(0xF << 28);
tmp |= (4 << 28);
intel_sbi_write(dev_priv, 0x20EC, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x21EC, SBI_MPHY);
tmp &= ~(0xF << 28);
tmp |= (4 << 28);
intel_sbi_write(dev_priv, 0x21EC, tmp, SBI_MPHY);
}
/* Implements 3 different sequences from BSpec chapter "Display iCLK
* Programming" based on the parameters passed:
* - Sequence to enable CLKOUT_DP
* - Sequence to enable CLKOUT_DP without spread
* - Sequence to enable CLKOUT_DP for FDI usage and configure PCH FDI I/O
*/
static void lpt_enable_clkout_dp(struct drm_device *dev, bool with_spread,
bool with_fdi)
{
struct drm_i915_private *dev_priv = to_i915(dev);
uint32_t reg, tmp;
if (WARN(with_fdi && !with_spread, "FDI requires downspread\n"))
with_spread = true;
if (WARN(HAS_PCH_LPT_LP(dev) && with_fdi, "LP PCH doesn't have FDI\n"))
with_fdi = false;
mutex_lock(&dev_priv->sb_lock);
tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
tmp &= ~SBI_SSCCTL_DISABLE;
tmp |= SBI_SSCCTL_PATHALT;
intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
udelay(24);
if (with_spread) {
tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
tmp &= ~SBI_SSCCTL_PATHALT;
intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
if (with_fdi) {
lpt_reset_fdi_mphy(dev_priv);
lpt_program_fdi_mphy(dev_priv);
}
}
reg = HAS_PCH_LPT_LP(dev) ? SBI_GEN0 : SBI_DBUFF0;
tmp = intel_sbi_read(dev_priv, reg, SBI_ICLK);
tmp |= SBI_GEN0_CFG_BUFFENABLE_DISABLE;
intel_sbi_write(dev_priv, reg, tmp, SBI_ICLK);
mutex_unlock(&dev_priv->sb_lock);
}
/* Sequence to disable CLKOUT_DP */
static void lpt_disable_clkout_dp(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
uint32_t reg, tmp;
mutex_lock(&dev_priv->sb_lock);
reg = HAS_PCH_LPT_LP(dev) ? SBI_GEN0 : SBI_DBUFF0;
tmp = intel_sbi_read(dev_priv, reg, SBI_ICLK);
tmp &= ~SBI_GEN0_CFG_BUFFENABLE_DISABLE;
intel_sbi_write(dev_priv, reg, tmp, SBI_ICLK);
tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
if (!(tmp & SBI_SSCCTL_DISABLE)) {
if (!(tmp & SBI_SSCCTL_PATHALT)) {
tmp |= SBI_SSCCTL_PATHALT;
intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
udelay(32);
}
tmp |= SBI_SSCCTL_DISABLE;
intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
}
mutex_unlock(&dev_priv->sb_lock);
}
#define BEND_IDX(steps) ((50 + (steps)) / 5)
static const uint16_t sscdivintphase[] = {
[BEND_IDX( 50)] = 0x3B23,
[BEND_IDX( 45)] = 0x3B23,
[BEND_IDX( 40)] = 0x3C23,
[BEND_IDX( 35)] = 0x3C23,
[BEND_IDX( 30)] = 0x3D23,
[BEND_IDX( 25)] = 0x3D23,
[BEND_IDX( 20)] = 0x3E23,
[BEND_IDX( 15)] = 0x3E23,
[BEND_IDX( 10)] = 0x3F23,
[BEND_IDX( 5)] = 0x3F23,
[BEND_IDX( 0)] = 0x0025,
[BEND_IDX( -5)] = 0x0025,
[BEND_IDX(-10)] = 0x0125,
[BEND_IDX(-15)] = 0x0125,
[BEND_IDX(-20)] = 0x0225,
[BEND_IDX(-25)] = 0x0225,
[BEND_IDX(-30)] = 0x0325,
[BEND_IDX(-35)] = 0x0325,
[BEND_IDX(-40)] = 0x0425,
[BEND_IDX(-45)] = 0x0425,
[BEND_IDX(-50)] = 0x0525,
};
/*
* Bend CLKOUT_DP
* steps -50 to 50 inclusive, in steps of 5
* < 0 slow down the clock, > 0 speed up the clock, 0 == no bend (135MHz)
* change in clock period = -(steps / 10) * 5.787 ps
*/
static void lpt_bend_clkout_dp(struct drm_i915_private *dev_priv, int steps)
{
uint32_t tmp;
int idx = BEND_IDX(steps);
if (WARN_ON(steps % 5 != 0))
return;
if (WARN_ON(idx >= ARRAY_SIZE(sscdivintphase)))
return;
mutex_lock(&dev_priv->sb_lock);
if (steps % 10 != 0)
tmp = 0xAAAAAAAB;
else
tmp = 0x00000000;
intel_sbi_write(dev_priv, SBI_SSCDITHPHASE, tmp, SBI_ICLK);
tmp = intel_sbi_read(dev_priv, SBI_SSCDIVINTPHASE, SBI_ICLK);
tmp &= 0xffff0000;
tmp |= sscdivintphase[idx];
intel_sbi_write(dev_priv, SBI_SSCDIVINTPHASE, tmp, SBI_ICLK);
mutex_unlock(&dev_priv->sb_lock);
}
#undef BEND_IDX
static void lpt_init_pch_refclk(struct drm_device *dev)
{
struct intel_encoder *encoder;
bool has_vga = false;
for_each_intel_encoder(dev, encoder) {
switch (encoder->type) {
case INTEL_OUTPUT_ANALOG:
has_vga = true;
break;
default:
break;
}
}
if (has_vga) {
lpt_bend_clkout_dp(to_i915(dev), 0);
lpt_enable_clkout_dp(dev, true, true);
} else {
lpt_disable_clkout_dp(dev);
}
}
/*
* Initialize reference clocks when the driver loads
*/
void intel_init_pch_refclk(struct drm_device *dev)
{
if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
ironlake_init_pch_refclk(dev);
else if (HAS_PCH_LPT(dev))
lpt_init_pch_refclk(dev);
}
static void ironlake_set_pipeconf(struct drm_crtc *crtc)
{
struct drm_i915_private *dev_priv = to_i915(crtc->dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
uint32_t val;
val = 0;
switch (intel_crtc->config->pipe_bpp) {
case 18:
val |= PIPECONF_6BPC;
break;
case 24:
val |= PIPECONF_8BPC;
break;
case 30:
val |= PIPECONF_10BPC;
break;
case 36:
val |= PIPECONF_12BPC;
break;
default:
/* Case prevented by intel_choose_pipe_bpp_dither. */
BUG();
}
if (intel_crtc->config->dither)
val |= (PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP);
if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE)
val |= PIPECONF_INTERLACED_ILK;
else
val |= PIPECONF_PROGRESSIVE;
if (intel_crtc->config->limited_color_range)
val |= PIPECONF_COLOR_RANGE_SELECT;
I915_WRITE(PIPECONF(pipe), val);
POSTING_READ(PIPECONF(pipe));
}
static void haswell_set_pipeconf(struct drm_crtc *crtc)
{
struct drm_i915_private *dev_priv = to_i915(crtc->dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
u32 val = 0;
if (IS_HASWELL(dev_priv) && intel_crtc->config->dither)
val |= (PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP);
if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE)
val |= PIPECONF_INTERLACED_ILK;
else
val |= PIPECONF_PROGRESSIVE;
I915_WRITE(PIPECONF(cpu_transcoder), val);
POSTING_READ(PIPECONF(cpu_transcoder));
}
static void haswell_set_pipemisc(struct drm_crtc *crtc)
{
struct drm_i915_private *dev_priv = to_i915(crtc->dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
if (IS_BROADWELL(dev_priv) || INTEL_INFO(dev_priv)->gen >= 9) {
u32 val = 0;
switch (intel_crtc->config->pipe_bpp) {
case 18:
val |= PIPEMISC_DITHER_6_BPC;
break;
case 24:
val |= PIPEMISC_DITHER_8_BPC;
break;
case 30:
val |= PIPEMISC_DITHER_10_BPC;
break;
case 36:
val |= PIPEMISC_DITHER_12_BPC;
break;
default:
/* Case prevented by pipe_config_set_bpp. */
BUG();
}
if (intel_crtc->config->dither)
val |= PIPEMISC_DITHER_ENABLE | PIPEMISC_DITHER_TYPE_SP;
I915_WRITE(PIPEMISC(intel_crtc->pipe), val);
}
}
int ironlake_get_lanes_required(int target_clock, int link_bw, int bpp)
{
/*
* Account for spread spectrum to avoid
* oversubscribing the link. Max center spread
* is 2.5%; use 5% for safety's sake.
*/
u32 bps = target_clock * bpp * 21 / 20;
return DIV_ROUND_UP(bps, link_bw * 8);
}
static bool ironlake_needs_fb_cb_tune(struct dpll *dpll, int factor)
{
return i9xx_dpll_compute_m(dpll) < factor * dpll->n;
}
static void ironlake_compute_dpll(struct intel_crtc *intel_crtc,
struct intel_crtc_state *crtc_state,
struct dpll *reduced_clock)
{
struct drm_crtc *crtc = &intel_crtc->base;
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
u32 dpll, fp, fp2;
int factor;
/* Enable autotuning of the PLL clock (if permissible) */
factor = 21;
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
if ((intel_panel_use_ssc(dev_priv) &&
dev_priv->vbt.lvds_ssc_freq == 100000) ||
(HAS_PCH_IBX(dev) && intel_is_dual_link_lvds(dev)))
factor = 25;
} else if (crtc_state->sdvo_tv_clock)
factor = 20;
fp = i9xx_dpll_compute_fp(&crtc_state->dpll);
if (ironlake_needs_fb_cb_tune(&crtc_state->dpll, factor))
fp |= FP_CB_TUNE;
if (reduced_clock) {
fp2 = i9xx_dpll_compute_fp(reduced_clock);
if (reduced_clock->m < factor * reduced_clock->n)
fp2 |= FP_CB_TUNE;
} else {
fp2 = fp;
}
dpll = 0;
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS))
dpll |= DPLLB_MODE_LVDS;
else
dpll |= DPLLB_MODE_DAC_SERIAL;
dpll |= (crtc_state->pixel_multiplier - 1)
<< PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO) ||
intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
dpll |= DPLL_SDVO_HIGH_SPEED;
if (intel_crtc_has_dp_encoder(crtc_state))
dpll |= DPLL_SDVO_HIGH_SPEED;
/*
* The high speed IO clock is only really required for
* SDVO/HDMI/DP, but we also enable it for CRT to make it
* possible to share the DPLL between CRT and HDMI. Enabling
* the clock needlessly does no real harm, except use up a
* bit of power potentially.
*
* We'll limit this to IVB with 3 pipes, since it has only two
* DPLLs and so DPLL sharing is the only way to get three pipes
* driving PCH ports at the same time. On SNB we could do this,
* and potentially avoid enabling the second DPLL, but it's not
* clear if it''s a win or loss power wise. No point in doing
* this on ILK at all since it has a fixed DPLL<->pipe mapping.
*/
if (INTEL_INFO(dev_priv)->num_pipes == 3 &&
intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG))
dpll |= DPLL_SDVO_HIGH_SPEED;
/* compute bitmask from p1 value */
dpll |= (1 << (crtc_state->dpll.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
/* also FPA1 */
dpll |= (1 << (crtc_state->dpll.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
switch (crtc_state->dpll.p2) {
case 5:
dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
break;
case 7:
dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
break;
case 10:
dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
break;
case 14:
dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
break;
}
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
intel_panel_use_ssc(dev_priv))
dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
else
dpll |= PLL_REF_INPUT_DREFCLK;
dpll |= DPLL_VCO_ENABLE;
crtc_state->dpll_hw_state.dpll = dpll;
crtc_state->dpll_hw_state.fp0 = fp;
crtc_state->dpll_hw_state.fp1 = fp2;
}
static int ironlake_crtc_compute_clock(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct dpll reduced_clock;
bool has_reduced_clock = false;
struct intel_shared_dpll *pll;
const struct intel_limit *limit;
int refclk = 120000;
memset(&crtc_state->dpll_hw_state, 0,
sizeof(crtc_state->dpll_hw_state));
crtc->lowfreq_avail = false;
/* CPU eDP is the only output that doesn't need a PCH PLL of its own. */
if (!crtc_state->has_pch_encoder)
return 0;
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
if (intel_panel_use_ssc(dev_priv)) {
DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n",
dev_priv->vbt.lvds_ssc_freq);
refclk = dev_priv->vbt.lvds_ssc_freq;
}
if (intel_is_dual_link_lvds(dev)) {
if (refclk == 100000)
limit = &intel_limits_ironlake_dual_lvds_100m;
else
limit = &intel_limits_ironlake_dual_lvds;
} else {
if (refclk == 100000)
limit = &intel_limits_ironlake_single_lvds_100m;
else
limit = &intel_limits_ironlake_single_lvds;
}
} else {
limit = &intel_limits_ironlake_dac;
}
if (!crtc_state->clock_set &&
!g4x_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
refclk, NULL, &crtc_state->dpll)) {
DRM_ERROR("Couldn't find PLL settings for mode!\n");
return -EINVAL;
}
ironlake_compute_dpll(crtc, crtc_state,
has_reduced_clock ? &reduced_clock : NULL);
pll = intel_get_shared_dpll(crtc, crtc_state, NULL);
if (pll == NULL) {
DRM_DEBUG_DRIVER("failed to find PLL for pipe %c\n",
pipe_name(crtc->pipe));
return -EINVAL;
}
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
has_reduced_clock)
crtc->lowfreq_avail = true;
return 0;
}
static void intel_pch_transcoder_get_m_n(struct intel_crtc *crtc,
struct intel_link_m_n *m_n)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe = crtc->pipe;
m_n->link_m = I915_READ(PCH_TRANS_LINK_M1(pipe));
m_n->link_n = I915_READ(PCH_TRANS_LINK_N1(pipe));
m_n->gmch_m = I915_READ(PCH_TRANS_DATA_M1(pipe))
& ~TU_SIZE_MASK;
m_n->gmch_n = I915_READ(PCH_TRANS_DATA_N1(pipe));
m_n->tu = ((I915_READ(PCH_TRANS_DATA_M1(pipe))
& TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
}
static void intel_cpu_transcoder_get_m_n(struct intel_crtc *crtc,
enum transcoder transcoder,
struct intel_link_m_n *m_n,
struct intel_link_m_n *m2_n2)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe = crtc->pipe;
if (INTEL_INFO(dev)->gen >= 5) {
m_n->link_m = I915_READ(PIPE_LINK_M1(transcoder));
m_n->link_n = I915_READ(PIPE_LINK_N1(transcoder));
m_n->gmch_m = I915_READ(PIPE_DATA_M1(transcoder))
& ~TU_SIZE_MASK;
m_n->gmch_n = I915_READ(PIPE_DATA_N1(transcoder));
m_n->tu = ((I915_READ(PIPE_DATA_M1(transcoder))
& TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
/* Read M2_N2 registers only for gen < 8 (M2_N2 available for
* gen < 8) and if DRRS is supported (to make sure the
* registers are not unnecessarily read).
*/
if (m2_n2 && INTEL_INFO(dev)->gen < 8 &&
crtc->config->has_drrs) {
m2_n2->link_m = I915_READ(PIPE_LINK_M2(transcoder));
m2_n2->link_n = I915_READ(PIPE_LINK_N2(transcoder));
m2_n2->gmch_m = I915_READ(PIPE_DATA_M2(transcoder))
& ~TU_SIZE_MASK;
m2_n2->gmch_n = I915_READ(PIPE_DATA_N2(transcoder));
m2_n2->tu = ((I915_READ(PIPE_DATA_M2(transcoder))
& TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
}
} else {
m_n->link_m = I915_READ(PIPE_LINK_M_G4X(pipe));
m_n->link_n = I915_READ(PIPE_LINK_N_G4X(pipe));
m_n->gmch_m = I915_READ(PIPE_DATA_M_G4X(pipe))
& ~TU_SIZE_MASK;
m_n->gmch_n = I915_READ(PIPE_DATA_N_G4X(pipe));
m_n->tu = ((I915_READ(PIPE_DATA_M_G4X(pipe))
& TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
}
}
void intel_dp_get_m_n(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
if (pipe_config->has_pch_encoder)
intel_pch_transcoder_get_m_n(crtc, &pipe_config->dp_m_n);
else
intel_cpu_transcoder_get_m_n(crtc, pipe_config->cpu_transcoder,
&pipe_config->dp_m_n,
&pipe_config->dp_m2_n2);
}
static void ironlake_get_fdi_m_n_config(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
intel_cpu_transcoder_get_m_n(crtc, pipe_config->cpu_transcoder,
&pipe_config->fdi_m_n, NULL);
}
static void skylake_get_pfit_config(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc_scaler_state *scaler_state = &pipe_config->scaler_state;
uint32_t ps_ctrl = 0;
int id = -1;
int i;
/* find scaler attached to this pipe */
for (i = 0; i < crtc->num_scalers; i++) {
ps_ctrl = I915_READ(SKL_PS_CTRL(crtc->pipe, i));
if (ps_ctrl & PS_SCALER_EN && !(ps_ctrl & PS_PLANE_SEL_MASK)) {
id = i;
pipe_config->pch_pfit.enabled = true;
pipe_config->pch_pfit.pos = I915_READ(SKL_PS_WIN_POS(crtc->pipe, i));
pipe_config->pch_pfit.size = I915_READ(SKL_PS_WIN_SZ(crtc->pipe, i));
break;
}
}
scaler_state->scaler_id = id;
if (id >= 0) {
scaler_state->scaler_users |= (1 << SKL_CRTC_INDEX);
} else {
scaler_state->scaler_users &= ~(1 << SKL_CRTC_INDEX);
}
}
static void
skylake_get_initial_plane_config(struct intel_crtc *crtc,
struct intel_initial_plane_config *plane_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
u32 val, base, offset, stride_mult, tiling;
int pipe = crtc->pipe;
int fourcc, pixel_format;
unsigned int aligned_height;
struct drm_framebuffer *fb;
struct intel_framebuffer *intel_fb;
intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
if (!intel_fb) {
DRM_DEBUG_KMS("failed to alloc fb\n");
return;
}
fb = &intel_fb->base;
val = I915_READ(PLANE_CTL(pipe, 0));
if (!(val & PLANE_CTL_ENABLE))
goto error;
pixel_format = val & PLANE_CTL_FORMAT_MASK;
fourcc = skl_format_to_fourcc(pixel_format,
val & PLANE_CTL_ORDER_RGBX,
val & PLANE_CTL_ALPHA_MASK);
fb->pixel_format = fourcc;
fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8;
tiling = val & PLANE_CTL_TILED_MASK;
switch (tiling) {
case PLANE_CTL_TILED_LINEAR:
fb->modifier[0] = DRM_FORMAT_MOD_NONE;
break;
case PLANE_CTL_TILED_X:
plane_config->tiling = I915_TILING_X;
fb->modifier[0] = I915_FORMAT_MOD_X_TILED;
break;
case PLANE_CTL_TILED_Y:
fb->modifier[0] = I915_FORMAT_MOD_Y_TILED;
break;
case PLANE_CTL_TILED_YF:
fb->modifier[0] = I915_FORMAT_MOD_Yf_TILED;
break;
default:
MISSING_CASE(tiling);
goto error;
}
base = I915_READ(PLANE_SURF(pipe, 0)) & 0xfffff000;
plane_config->base = base;
offset = I915_READ(PLANE_OFFSET(pipe, 0));
val = I915_READ(PLANE_SIZE(pipe, 0));
fb->height = ((val >> 16) & 0xfff) + 1;
fb->width = ((val >> 0) & 0x1fff) + 1;
val = I915_READ(PLANE_STRIDE(pipe, 0));
stride_mult = intel_fb_stride_alignment(dev_priv, fb->modifier[0],
fb->pixel_format);
fb->pitches[0] = (val & 0x3ff) * stride_mult;
aligned_height = intel_fb_align_height(dev, fb->height,
fb->pixel_format,
fb->modifier[0]);
plane_config->size = fb->pitches[0] * aligned_height;
DRM_DEBUG_KMS("pipe %c with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
pipe_name(pipe), fb->width, fb->height,
fb->bits_per_pixel, base, fb->pitches[0],
plane_config->size);
plane_config->fb = intel_fb;
return;
error:
kfree(intel_fb);
}
static void ironlake_get_pfit_config(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
uint32_t tmp;
tmp = I915_READ(PF_CTL(crtc->pipe));
if (tmp & PF_ENABLE) {
pipe_config->pch_pfit.enabled = true;
pipe_config->pch_pfit.pos = I915_READ(PF_WIN_POS(crtc->pipe));
pipe_config->pch_pfit.size = I915_READ(PF_WIN_SZ(crtc->pipe));
/* We currently do not free assignements of panel fitters on
* ivb/hsw (since we don't use the higher upscaling modes which
* differentiates them) so just WARN about this case for now. */
if (IS_GEN7(dev)) {
WARN_ON((tmp & PF_PIPE_SEL_MASK_IVB) !=
PF_PIPE_SEL_IVB(crtc->pipe));
}
}
}
static void
ironlake_get_initial_plane_config(struct intel_crtc *crtc,
struct intel_initial_plane_config *plane_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
u32 val, base, offset;
int pipe = crtc->pipe;
int fourcc, pixel_format;
unsigned int aligned_height;
struct drm_framebuffer *fb;
struct intel_framebuffer *intel_fb;
val = I915_READ(DSPCNTR(pipe));
if (!(val & DISPLAY_PLANE_ENABLE))
return;
intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
if (!intel_fb) {
DRM_DEBUG_KMS("failed to alloc fb\n");
return;
}
fb = &intel_fb->base;
if (INTEL_INFO(dev)->gen >= 4) {
if (val & DISPPLANE_TILED) {
plane_config->tiling = I915_TILING_X;
fb->modifier[0] = I915_FORMAT_MOD_X_TILED;
}
}
pixel_format = val & DISPPLANE_PIXFORMAT_MASK;
fourcc = i9xx_format_to_fourcc(pixel_format);
fb->pixel_format = fourcc;
fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8;
base = I915_READ(DSPSURF(pipe)) & 0xfffff000;
if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
offset = I915_READ(DSPOFFSET(pipe));
} else {
if (plane_config->tiling)
offset = I915_READ(DSPTILEOFF(pipe));
else
offset = I915_READ(DSPLINOFF(pipe));
}
plane_config->base = base;
val = I915_READ(PIPESRC(pipe));
fb->width = ((val >> 16) & 0xfff) + 1;
fb->height = ((val >> 0) & 0xfff) + 1;
val = I915_READ(DSPSTRIDE(pipe));
fb->pitches[0] = val & 0xffffffc0;
aligned_height = intel_fb_align_height(dev, fb->height,
fb->pixel_format,
fb->modifier[0]);
plane_config->size = fb->pitches[0] * aligned_height;
DRM_DEBUG_KMS("pipe %c with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
pipe_name(pipe), fb->width, fb->height,
fb->bits_per_pixel, base, fb->pitches[0],
plane_config->size);
plane_config->fb = intel_fb;
}
static bool ironlake_get_pipe_config(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum intel_display_power_domain power_domain;
uint32_t tmp;
bool ret;
power_domain = POWER_DOMAIN_PIPE(crtc->pipe);
if (!intel_display_power_get_if_enabled(dev_priv, power_domain))
return false;
pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
pipe_config->shared_dpll = NULL;
ret = false;
tmp = I915_READ(PIPECONF(crtc->pipe));
if (!(tmp & PIPECONF_ENABLE))
goto out;
switch (tmp & PIPECONF_BPC_MASK) {
case PIPECONF_6BPC:
pipe_config->pipe_bpp = 18;
break;
case PIPECONF_8BPC:
pipe_config->pipe_bpp = 24;
break;
case PIPECONF_10BPC:
pipe_config->pipe_bpp = 30;
break;
case PIPECONF_12BPC:
pipe_config->pipe_bpp = 36;
break;
default:
break;
}
if (tmp & PIPECONF_COLOR_RANGE_SELECT)
pipe_config->limited_color_range = true;
if (I915_READ(PCH_TRANSCONF(crtc->pipe)) & TRANS_ENABLE) {
struct intel_shared_dpll *pll;
enum intel_dpll_id pll_id;
pipe_config->has_pch_encoder = true;
tmp = I915_READ(FDI_RX_CTL(crtc->pipe));
pipe_config->fdi_lanes = ((FDI_DP_PORT_WIDTH_MASK & tmp) >>
FDI_DP_PORT_WIDTH_SHIFT) + 1;
ironlake_get_fdi_m_n_config(crtc, pipe_config);
if (HAS_PCH_IBX(dev_priv)) {
/*
* The pipe->pch transcoder and pch transcoder->pll
* mapping is fixed.
*/
pll_id = (enum intel_dpll_id) crtc->pipe;
} else {
tmp = I915_READ(PCH_DPLL_SEL);
if (tmp & TRANS_DPLLB_SEL(crtc->pipe))
pll_id = DPLL_ID_PCH_PLL_B;
else
pll_id= DPLL_ID_PCH_PLL_A;
}
pipe_config->shared_dpll =
intel_get_shared_dpll_by_id(dev_priv, pll_id);
pll = pipe_config->shared_dpll;
WARN_ON(!pll->funcs.get_hw_state(dev_priv, pll,
&pipe_config->dpll_hw_state));
tmp = pipe_config->dpll_hw_state.dpll;
pipe_config->pixel_multiplier =
((tmp & PLL_REF_SDVO_HDMI_MULTIPLIER_MASK)
>> PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT) + 1;
ironlake_pch_clock_get(crtc, pipe_config);
} else {
pipe_config->pixel_multiplier = 1;
}
intel_get_pipe_timings(crtc, pipe_config);
intel_get_pipe_src_size(crtc, pipe_config);
ironlake_get_pfit_config(crtc, pipe_config);
ret = true;
out:
intel_display_power_put(dev_priv, power_domain);
return ret;
}
static void assert_can_disable_lcpll(struct drm_i915_private *dev_priv)
{
struct drm_device *dev = &dev_priv->drm;
struct intel_crtc *crtc;
for_each_intel_crtc(dev, crtc)
I915_STATE_WARN(crtc->active, "CRTC for pipe %c enabled\n",
pipe_name(crtc->pipe));
I915_STATE_WARN(I915_READ(HSW_PWR_WELL_DRIVER), "Power well on\n");
I915_STATE_WARN(I915_READ(SPLL_CTL) & SPLL_PLL_ENABLE, "SPLL enabled\n");
I915_STATE_WARN(I915_READ(WRPLL_CTL(0)) & WRPLL_PLL_ENABLE, "WRPLL1 enabled\n");
I915_STATE_WARN(I915_READ(WRPLL_CTL(1)) & WRPLL_PLL_ENABLE, "WRPLL2 enabled\n");
I915_STATE_WARN(I915_READ(PP_STATUS(0)) & PP_ON, "Panel power on\n");
I915_STATE_WARN(I915_READ(BLC_PWM_CPU_CTL2) & BLM_PWM_ENABLE,
"CPU PWM1 enabled\n");
if (IS_HASWELL(dev))
I915_STATE_WARN(I915_READ(HSW_BLC_PWM2_CTL) & BLM_PWM_ENABLE,
"CPU PWM2 enabled\n");
I915_STATE_WARN(I915_READ(BLC_PWM_PCH_CTL1) & BLM_PCH_PWM_ENABLE,
"PCH PWM1 enabled\n");
I915_STATE_WARN(I915_READ(UTIL_PIN_CTL) & UTIL_PIN_ENABLE,
"Utility pin enabled\n");
I915_STATE_WARN(I915_READ(PCH_GTC_CTL) & PCH_GTC_ENABLE, "PCH GTC enabled\n");
/*
* In theory we can still leave IRQs enabled, as long as only the HPD
* interrupts remain enabled. We used to check for that, but since it's
* gen-specific and since we only disable LCPLL after we fully disable
* the interrupts, the check below should be enough.
*/
I915_STATE_WARN(intel_irqs_enabled(dev_priv), "IRQs enabled\n");
}
static uint32_t hsw_read_dcomp(struct drm_i915_private *dev_priv)
{
struct drm_device *dev = &dev_priv->drm;
if (IS_HASWELL(dev))
return I915_READ(D_COMP_HSW);
else
return I915_READ(D_COMP_BDW);
}
static void hsw_write_dcomp(struct drm_i915_private *dev_priv, uint32_t val)
{
struct drm_device *dev = &dev_priv->drm;
if (IS_HASWELL(dev)) {
mutex_lock(&dev_priv->rps.hw_lock);
if (sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_D_COMP,
val))
DRM_DEBUG_KMS("Failed to write to D_COMP\n");
mutex_unlock(&dev_priv->rps.hw_lock);
} else {
I915_WRITE(D_COMP_BDW, val);
POSTING_READ(D_COMP_BDW);
}
}
/*
* This function implements pieces of two sequences from BSpec:
* - Sequence for display software to disable LCPLL
* - Sequence for display software to allow package C8+
* The steps implemented here are just the steps that actually touch the LCPLL
* register. Callers should take care of disabling all the display engine
* functions, doing the mode unset, fixing interrupts, etc.
*/
static void hsw_disable_lcpll(struct drm_i915_private *dev_priv,
bool switch_to_fclk, bool allow_power_down)
{
uint32_t val;
assert_can_disable_lcpll(dev_priv);
val = I915_READ(LCPLL_CTL);
if (switch_to_fclk) {
val |= LCPLL_CD_SOURCE_FCLK;
I915_WRITE(LCPLL_CTL, val);
if (wait_for_us(I915_READ(LCPLL_CTL) &
LCPLL_CD_SOURCE_FCLK_DONE, 1))
DRM_ERROR("Switching to FCLK failed\n");
val = I915_READ(LCPLL_CTL);
}
val |= LCPLL_PLL_DISABLE;
I915_WRITE(LCPLL_CTL, val);
POSTING_READ(LCPLL_CTL);
if (intel_wait_for_register(dev_priv, LCPLL_CTL, LCPLL_PLL_LOCK, 0, 1))
DRM_ERROR("LCPLL still locked\n");
val = hsw_read_dcomp(dev_priv);
val |= D_COMP_COMP_DISABLE;
hsw_write_dcomp(dev_priv, val);
ndelay(100);
if (wait_for((hsw_read_dcomp(dev_priv) & D_COMP_RCOMP_IN_PROGRESS) == 0,
1))
DRM_ERROR("D_COMP RCOMP still in progress\n");
if (allow_power_down) {
val = I915_READ(LCPLL_CTL);
val |= LCPLL_POWER_DOWN_ALLOW;
I915_WRITE(LCPLL_CTL, val);
POSTING_READ(LCPLL_CTL);
}
}
/*
* Fully restores LCPLL, disallowing power down and switching back to LCPLL
* source.
*/
static void hsw_restore_lcpll(struct drm_i915_private *dev_priv)
{
uint32_t val;
val = I915_READ(LCPLL_CTL);
if ((val & (LCPLL_PLL_LOCK | LCPLL_PLL_DISABLE | LCPLL_CD_SOURCE_FCLK |
LCPLL_POWER_DOWN_ALLOW)) == LCPLL_PLL_LOCK)
return;
/*
* Make sure we're not on PC8 state before disabling PC8, otherwise
* we'll hang the machine. To prevent PC8 state, just enable force_wake.
*/
intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
if (val & LCPLL_POWER_DOWN_ALLOW) {
val &= ~LCPLL_POWER_DOWN_ALLOW;
I915_WRITE(LCPLL_CTL, val);
POSTING_READ(LCPLL_CTL);
}
val = hsw_read_dcomp(dev_priv);
val |= D_COMP_COMP_FORCE;
val &= ~D_COMP_COMP_DISABLE;
hsw_write_dcomp(dev_priv, val);
val = I915_READ(LCPLL_CTL);
val &= ~LCPLL_PLL_DISABLE;
I915_WRITE(LCPLL_CTL, val);
if (intel_wait_for_register(dev_priv,
LCPLL_CTL, LCPLL_PLL_LOCK, LCPLL_PLL_LOCK,
5))
DRM_ERROR("LCPLL not locked yet\n");
if (val & LCPLL_CD_SOURCE_FCLK) {
val = I915_READ(LCPLL_CTL);
val &= ~LCPLL_CD_SOURCE_FCLK;
I915_WRITE(LCPLL_CTL, val);
if (wait_for_us((I915_READ(LCPLL_CTL) &
LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1))
DRM_ERROR("Switching back to LCPLL failed\n");
}
intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
intel_update_cdclk(&dev_priv->drm);
}
/*
* Package states C8 and deeper are really deep PC states that can only be
* reached when all the devices on the system allow it, so even if the graphics
* device allows PC8+, it doesn't mean the system will actually get to these
* states. Our driver only allows PC8+ when going into runtime PM.
*
* The requirements for PC8+ are that all the outputs are disabled, the power
* well is disabled and most interrupts are disabled, and these are also
* requirements for runtime PM. When these conditions are met, we manually do
* the other conditions: disable the interrupts, clocks and switch LCPLL refclk
* to Fclk. If we're in PC8+ and we get an non-hotplug interrupt, we can hard
* hang the machine.
*
* When we really reach PC8 or deeper states (not just when we allow it) we lose
* the state of some registers, so when we come back from PC8+ we need to
* restore this state. We don't get into PC8+ if we're not in RC6, so we don't
* need to take care of the registers kept by RC6. Notice that this happens even
* if we don't put the device in PCI D3 state (which is what currently happens
* because of the runtime PM support).
*
* For more, read "Display Sequences for Package C8" on the hardware
* documentation.
*/
void hsw_enable_pc8(struct drm_i915_private *dev_priv)
{
struct drm_device *dev = &dev_priv->drm;
uint32_t val;
DRM_DEBUG_KMS("Enabling package C8+\n");
if (HAS_PCH_LPT_LP(dev)) {
val = I915_READ(SOUTH_DSPCLK_GATE_D);
val &= ~PCH_LP_PARTITION_LEVEL_DISABLE;
I915_WRITE(SOUTH_DSPCLK_GATE_D, val);
}
lpt_disable_clkout_dp(dev);
hsw_disable_lcpll(dev_priv, true, true);
}
void hsw_disable_pc8(struct drm_i915_private *dev_priv)
{
struct drm_device *dev = &dev_priv->drm;
uint32_t val;
DRM_DEBUG_KMS("Disabling package C8+\n");
hsw_restore_lcpll(dev_priv);
lpt_init_pch_refclk(dev);
if (HAS_PCH_LPT_LP(dev)) {
val = I915_READ(SOUTH_DSPCLK_GATE_D);
val |= PCH_LP_PARTITION_LEVEL_DISABLE;
I915_WRITE(SOUTH_DSPCLK_GATE_D, val);
}
}
static void bxt_modeset_commit_cdclk(struct drm_atomic_state *old_state)
{
struct drm_device *dev = old_state->dev;
struct intel_atomic_state *old_intel_state =
to_intel_atomic_state(old_state);
unsigned int req_cdclk = old_intel_state->dev_cdclk;
bxt_set_cdclk(to_i915(dev), req_cdclk);
}
/* compute the max rate for new configuration */
static int ilk_max_pixel_rate(struct drm_atomic_state *state)
{
struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
struct drm_i915_private *dev_priv = to_i915(state->dev);
struct drm_crtc *crtc;
struct drm_crtc_state *cstate;
struct intel_crtc_state *crtc_state;
unsigned max_pixel_rate = 0, i;
enum pipe pipe;
memcpy(intel_state->min_pixclk, dev_priv->min_pixclk,
sizeof(intel_state->min_pixclk));
for_each_crtc_in_state(state, crtc, cstate, i) {
int pixel_rate;
crtc_state = to_intel_crtc_state(cstate);
if (!crtc_state->base.enable) {
intel_state->min_pixclk[i] = 0;
continue;
}
pixel_rate = ilk_pipe_pixel_rate(crtc_state);
/* pixel rate mustn't exceed 95% of cdclk with IPS on BDW */
if (IS_BROADWELL(dev_priv) && crtc_state->ips_enabled)
pixel_rate = DIV_ROUND_UP(pixel_rate * 100, 95);
intel_state->min_pixclk[i] = pixel_rate;
}
for_each_pipe(dev_priv, pipe)
max_pixel_rate = max(intel_state->min_pixclk[pipe], max_pixel_rate);
return max_pixel_rate;
}
static void broadwell_set_cdclk(struct drm_device *dev, int cdclk)
{
struct drm_i915_private *dev_priv = to_i915(dev);
uint32_t val, data;
int ret;
if (WARN((I915_READ(LCPLL_CTL) &
(LCPLL_PLL_DISABLE | LCPLL_PLL_LOCK |
LCPLL_CD_CLOCK_DISABLE | LCPLL_ROOT_CD_CLOCK_DISABLE |
LCPLL_CD2X_CLOCK_DISABLE | LCPLL_POWER_DOWN_ALLOW |
LCPLL_CD_SOURCE_FCLK)) != LCPLL_PLL_LOCK,
"trying to change cdclk frequency with cdclk not enabled\n"))
return;
mutex_lock(&dev_priv->rps.hw_lock);
ret = sandybridge_pcode_write(dev_priv,
BDW_PCODE_DISPLAY_FREQ_CHANGE_REQ, 0x0);
mutex_unlock(&dev_priv->rps.hw_lock);
if (ret) {
DRM_ERROR("failed to inform pcode about cdclk change\n");
return;
}
val = I915_READ(LCPLL_CTL);
val |= LCPLL_CD_SOURCE_FCLK;
I915_WRITE(LCPLL_CTL, val);
if (wait_for_us(I915_READ(LCPLL_CTL) &
LCPLL_CD_SOURCE_FCLK_DONE, 1))
DRM_ERROR("Switching to FCLK failed\n");
val = I915_READ(LCPLL_CTL);
val &= ~LCPLL_CLK_FREQ_MASK;
switch (cdclk) {
case 450000:
val |= LCPLL_CLK_FREQ_450;
data = 0;
break;
case 540000:
val |= LCPLL_CLK_FREQ_54O_BDW;
data = 1;
break;
case 337500:
val |= LCPLL_CLK_FREQ_337_5_BDW;
data = 2;
break;
case 675000:
val |= LCPLL_CLK_FREQ_675_BDW;
data = 3;
break;
default:
WARN(1, "invalid cdclk frequency\n");
return;
}
I915_WRITE(LCPLL_CTL, val);
val = I915_READ(LCPLL_CTL);
val &= ~LCPLL_CD_SOURCE_FCLK;
I915_WRITE(LCPLL_CTL, val);
if (wait_for_us((I915_READ(LCPLL_CTL) &
LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1))
DRM_ERROR("Switching back to LCPLL failed\n");
mutex_lock(&dev_priv->rps.hw_lock);
sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ, data);
mutex_unlock(&dev_priv->rps.hw_lock);
I915_WRITE(CDCLK_FREQ, DIV_ROUND_CLOSEST(cdclk, 1000) - 1);
intel_update_cdclk(dev);
WARN(cdclk != dev_priv->cdclk_freq,
"cdclk requested %d kHz but got %d kHz\n",
cdclk, dev_priv->cdclk_freq);
}
static int broadwell_calc_cdclk(int max_pixclk)
{
if (max_pixclk > 540000)
return 675000;
else if (max_pixclk > 450000)
return 540000;
else if (max_pixclk > 337500)
return 450000;
else
return 337500;
}
static int broadwell_modeset_calc_cdclk(struct drm_atomic_state *state)
{
struct drm_i915_private *dev_priv = to_i915(state->dev);
struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
int max_pixclk = ilk_max_pixel_rate(state);
int cdclk;
/*
* FIXME should also account for plane ratio
* once 64bpp pixel formats are supported.
*/
cdclk = broadwell_calc_cdclk(max_pixclk);
if (cdclk > dev_priv->max_cdclk_freq) {
DRM_DEBUG_KMS("requested cdclk (%d kHz) exceeds max (%d kHz)\n",
cdclk, dev_priv->max_cdclk_freq);
return -EINVAL;
}
intel_state->cdclk = intel_state->dev_cdclk = cdclk;
if (!intel_state->active_crtcs)
intel_state->dev_cdclk = broadwell_calc_cdclk(0);
return 0;
}
static void broadwell_modeset_commit_cdclk(struct drm_atomic_state *old_state)
{
struct drm_device *dev = old_state->dev;
struct intel_atomic_state *old_intel_state =
to_intel_atomic_state(old_state);
unsigned req_cdclk = old_intel_state->dev_cdclk;
broadwell_set_cdclk(dev, req_cdclk);
}
static int skl_modeset_calc_cdclk(struct drm_atomic_state *state)
{
struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
struct drm_i915_private *dev_priv = to_i915(state->dev);
const int max_pixclk = ilk_max_pixel_rate(state);
int vco = intel_state->cdclk_pll_vco;
int cdclk;
/*
* FIXME should also account for plane ratio
* once 64bpp pixel formats are supported.
*/
cdclk = skl_calc_cdclk(max_pixclk, vco);
/*
* FIXME move the cdclk caclulation to
* compute_config() so we can fail gracegully.
*/
if (cdclk > dev_priv->max_cdclk_freq) {
DRM_ERROR("requested cdclk (%d kHz) exceeds max (%d kHz)\n",
cdclk, dev_priv->max_cdclk_freq);
cdclk = dev_priv->max_cdclk_freq;
}
intel_state->cdclk = intel_state->dev_cdclk = cdclk;
if (!intel_state->active_crtcs)
intel_state->dev_cdclk = skl_calc_cdclk(0, vco);
return 0;
}
static void skl_modeset_commit_cdclk(struct drm_atomic_state *old_state)
{
struct drm_i915_private *dev_priv = to_i915(old_state->dev);
struct intel_atomic_state *intel_state = to_intel_atomic_state(old_state);
unsigned int req_cdclk = intel_state->dev_cdclk;
unsigned int req_vco = intel_state->cdclk_pll_vco;
skl_set_cdclk(dev_priv, req_cdclk, req_vco);
}
static int haswell_crtc_compute_clock(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state)
{
if (!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI)) {
if (!intel_ddi_pll_select(crtc, crtc_state))
return -EINVAL;
}
crtc->lowfreq_avail = false;
return 0;
}
static void bxt_get_ddi_pll(struct drm_i915_private *dev_priv,
enum port port,
struct intel_crtc_state *pipe_config)
{
enum intel_dpll_id id;
switch (port) {
case PORT_A:
id = DPLL_ID_SKL_DPLL0;
break;
case PORT_B:
id = DPLL_ID_SKL_DPLL1;
break;
case PORT_C:
id = DPLL_ID_SKL_DPLL2;
break;
default:
DRM_ERROR("Incorrect port type\n");
return;
}
pipe_config->shared_dpll = intel_get_shared_dpll_by_id(dev_priv, id);
}
static void skylake_get_ddi_pll(struct drm_i915_private *dev_priv,
enum port port,
struct intel_crtc_state *pipe_config)
{
enum intel_dpll_id id;
u32 temp;
temp = I915_READ(DPLL_CTRL2) & DPLL_CTRL2_DDI_CLK_SEL_MASK(port);
id = temp >> (port * 3 + 1);
if (WARN_ON(id < SKL_DPLL0 || id > SKL_DPLL3))
return;
pipe_config->shared_dpll = intel_get_shared_dpll_by_id(dev_priv, id);
}
static void haswell_get_ddi_pll(struct drm_i915_private *dev_priv,
enum port port,
struct intel_crtc_state *pipe_config)
{
enum intel_dpll_id id;
uint32_t ddi_pll_sel = I915_READ(PORT_CLK_SEL(port));
switch (ddi_pll_sel) {
case PORT_CLK_SEL_WRPLL1:
id = DPLL_ID_WRPLL1;
break;
case PORT_CLK_SEL_WRPLL2:
id = DPLL_ID_WRPLL2;
break;
case PORT_CLK_SEL_SPLL:
id = DPLL_ID_SPLL;
break;
case PORT_CLK_SEL_LCPLL_810:
id = DPLL_ID_LCPLL_810;
break;
case PORT_CLK_SEL_LCPLL_1350:
id = DPLL_ID_LCPLL_1350;
break;
case PORT_CLK_SEL_LCPLL_2700:
id = DPLL_ID_LCPLL_2700;
break;
default:
MISSING_CASE(ddi_pll_sel);
/* fall through */
case PORT_CLK_SEL_NONE:
return;
}
pipe_config->shared_dpll = intel_get_shared_dpll_by_id(dev_priv, id);
}
static bool hsw_get_transcoder_state(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config,
unsigned long *power_domain_mask)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum intel_display_power_domain power_domain;
u32 tmp;
/*
* The pipe->transcoder mapping is fixed with the exception of the eDP
* transcoder handled below.
*/
pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
/*
* XXX: Do intel_display_power_get_if_enabled before reading this (for
* consistency and less surprising code; it's in always on power).
*/
tmp = I915_READ(TRANS_DDI_FUNC_CTL(TRANSCODER_EDP));
if (tmp & TRANS_DDI_FUNC_ENABLE) {
enum pipe trans_edp_pipe;
switch (tmp & TRANS_DDI_EDP_INPUT_MASK) {
default:
WARN(1, "unknown pipe linked to edp transcoder\n");
case TRANS_DDI_EDP_INPUT_A_ONOFF:
case TRANS_DDI_EDP_INPUT_A_ON:
trans_edp_pipe = PIPE_A;
break;
case TRANS_DDI_EDP_INPUT_B_ONOFF:
trans_edp_pipe = PIPE_B;
break;
case TRANS_DDI_EDP_INPUT_C_ONOFF:
trans_edp_pipe = PIPE_C;
break;
}
if (trans_edp_pipe == crtc->pipe)
pipe_config->cpu_transcoder = TRANSCODER_EDP;
}
power_domain = POWER_DOMAIN_TRANSCODER(pipe_config->cpu_transcoder);
if (!intel_display_power_get_if_enabled(dev_priv, power_domain))
return false;
*power_domain_mask |= BIT(power_domain);
tmp = I915_READ(PIPECONF(pipe_config->cpu_transcoder));
return tmp & PIPECONF_ENABLE;
}
static bool bxt_get_dsi_transcoder_state(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config,
unsigned long *power_domain_mask)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum intel_display_power_domain power_domain;
enum port port;
enum transcoder cpu_transcoder;
u32 tmp;
for_each_port_masked(port, BIT(PORT_A) | BIT(PORT_C)) {
if (port == PORT_A)
cpu_transcoder = TRANSCODER_DSI_A;
else
cpu_transcoder = TRANSCODER_DSI_C;
power_domain = POWER_DOMAIN_TRANSCODER(cpu_transcoder);
if (!intel_display_power_get_if_enabled(dev_priv, power_domain))
continue;
*power_domain_mask |= BIT(power_domain);
/*
* The PLL needs to be enabled with a valid divider
* configuration, otherwise accessing DSI registers will hang
* the machine. See BSpec North Display Engine
* registers/MIPI[BXT]. We can break out here early, since we
* need the same DSI PLL to be enabled for both DSI ports.
*/
if (!intel_dsi_pll_is_enabled(dev_priv))
break;
/* XXX: this works for video mode only */
tmp = I915_READ(BXT_MIPI_PORT_CTRL(port));
if (!(tmp & DPI_ENABLE))
continue;
tmp = I915_READ(MIPI_CTRL(port));
if ((tmp & BXT_PIPE_SELECT_MASK) != BXT_PIPE_SELECT(crtc->pipe))
continue;
pipe_config->cpu_transcoder = cpu_transcoder;
break;
}
return transcoder_is_dsi(pipe_config->cpu_transcoder);
}
static void haswell_get_ddi_port_state(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_shared_dpll *pll;
enum port port;
uint32_t tmp;
tmp = I915_READ(TRANS_DDI_FUNC_CTL(pipe_config->cpu_transcoder));
port = (tmp & TRANS_DDI_PORT_MASK) >> TRANS_DDI_PORT_SHIFT;
if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev))
skylake_get_ddi_pll(dev_priv, port, pipe_config);
else if (IS_BROXTON(dev))
bxt_get_ddi_pll(dev_priv, port, pipe_config);
else
haswell_get_ddi_pll(dev_priv, port, pipe_config);
pll = pipe_config->shared_dpll;
if (pll) {
WARN_ON(!pll->funcs.get_hw_state(dev_priv, pll,
&pipe_config->dpll_hw_state));
}
/*
* Haswell has only FDI/PCH transcoder A. It is which is connected to
* DDI E. So just check whether this pipe is wired to DDI E and whether
* the PCH transcoder is on.
*/
if (INTEL_INFO(dev)->gen < 9 &&
(port == PORT_E) && I915_READ(LPT_TRANSCONF) & TRANS_ENABLE) {
pipe_config->has_pch_encoder = true;
tmp = I915_READ(FDI_RX_CTL(PIPE_A));
pipe_config->fdi_lanes = ((FDI_DP_PORT_WIDTH_MASK & tmp) >>
FDI_DP_PORT_WIDTH_SHIFT) + 1;
ironlake_get_fdi_m_n_config(crtc, pipe_config);
}
}
static bool haswell_get_pipe_config(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum intel_display_power_domain power_domain;
unsigned long power_domain_mask;
bool active;
power_domain = POWER_DOMAIN_PIPE(crtc->pipe);
if (!intel_display_power_get_if_enabled(dev_priv, power_domain))
return false;
power_domain_mask = BIT(power_domain);
pipe_config->shared_dpll = NULL;
active = hsw_get_transcoder_state(crtc, pipe_config, &power_domain_mask);
if (IS_BROXTON(dev_priv) &&
bxt_get_dsi_transcoder_state(crtc, pipe_config, &power_domain_mask)) {
WARN_ON(active);
active = true;
}
if (!active)
goto out;
if (!transcoder_is_dsi(pipe_config->cpu_transcoder)) {
haswell_get_ddi_port_state(crtc, pipe_config);
intel_get_pipe_timings(crtc, pipe_config);
}
intel_get_pipe_src_size(crtc, pipe_config);
pipe_config->gamma_mode =
I915_READ(GAMMA_MODE(crtc->pipe)) & GAMMA_MODE_MODE_MASK;
if (INTEL_INFO(dev)->gen >= 9) {
skl_init_scalers(dev, crtc, pipe_config);
}
if (INTEL_INFO(dev)->gen >= 9) {
pipe_config->scaler_state.scaler_id = -1;
pipe_config->scaler_state.scaler_users &= ~(1 << SKL_CRTC_INDEX);
}
power_domain = POWER_DOMAIN_PIPE_PANEL_FITTER(crtc->pipe);
if (intel_display_power_get_if_enabled(dev_priv, power_domain)) {
power_domain_mask |= BIT(power_domain);
if (INTEL_INFO(dev)->gen >= 9)
skylake_get_pfit_config(crtc, pipe_config);
else
ironlake_get_pfit_config(crtc, pipe_config);
}
if (IS_HASWELL(dev))
pipe_config->ips_enabled = hsw_crtc_supports_ips(crtc) &&
(I915_READ(IPS_CTL) & IPS_ENABLE);
if (pipe_config->cpu_transcoder != TRANSCODER_EDP &&
!transcoder_is_dsi(pipe_config->cpu_transcoder)) {
pipe_config->pixel_multiplier =
I915_READ(PIPE_MULT(pipe_config->cpu_transcoder)) + 1;
} else {
pipe_config->pixel_multiplier = 1;
}
out:
for_each_power_domain(power_domain, power_domain_mask)
intel_display_power_put(dev_priv, power_domain);
return active;
}
static void i845_update_cursor(struct drm_crtc *crtc, u32 base,
const struct intel_plane_state *plane_state)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
uint32_t cntl = 0, size = 0;
if (plane_state && plane_state->base.visible) {
unsigned int width = plane_state->base.crtc_w;
unsigned int height = plane_state->base.crtc_h;
unsigned int stride = roundup_pow_of_two(width) * 4;
switch (stride) {
default:
WARN_ONCE(1, "Invalid cursor width/stride, width=%u, stride=%u\n",
width, stride);
stride = 256;
/* fallthrough */
case 256:
case 512:
case 1024:
case 2048:
break;
}
cntl |= CURSOR_ENABLE |
CURSOR_GAMMA_ENABLE |
CURSOR_FORMAT_ARGB |
CURSOR_STRIDE(stride);
size = (height << 12) | width;
}
if (intel_crtc->cursor_cntl != 0 &&
(intel_crtc->cursor_base != base ||
intel_crtc->cursor_size != size ||
intel_crtc->cursor_cntl != cntl)) {
/* On these chipsets we can only modify the base/size/stride
* whilst the cursor is disabled.
*/
I915_WRITE(CURCNTR(PIPE_A), 0);
POSTING_READ(CURCNTR(PIPE_A));
intel_crtc->cursor_cntl = 0;
}
if (intel_crtc->cursor_base != base) {
I915_WRITE(CURBASE(PIPE_A), base);
intel_crtc->cursor_base = base;
}
if (intel_crtc->cursor_size != size) {
I915_WRITE(CURSIZE, size);
intel_crtc->cursor_size = size;
}
if (intel_crtc->cursor_cntl != cntl) {
I915_WRITE(CURCNTR(PIPE_A), cntl);
POSTING_READ(CURCNTR(PIPE_A));
intel_crtc->cursor_cntl = cntl;
}
}
static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base,
const struct intel_plane_state *plane_state)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
const struct skl_wm_values *wm = &dev_priv->wm.skl_results;
int pipe = intel_crtc->pipe;
uint32_t cntl = 0;
if (INTEL_GEN(dev_priv) >= 9 && wm->dirty_pipes & drm_crtc_mask(crtc))
skl_write_cursor_wm(intel_crtc, wm);
if (plane_state && plane_state->base.visible) {
cntl = MCURSOR_GAMMA_ENABLE;
switch (plane_state->base.crtc_w) {
case 64:
cntl |= CURSOR_MODE_64_ARGB_AX;
break;
case 128:
cntl |= CURSOR_MODE_128_ARGB_AX;
break;
case 256:
cntl |= CURSOR_MODE_256_ARGB_AX;
break;
default:
MISSING_CASE(plane_state->base.crtc_w);
return;
}
cntl |= pipe << 28; /* Connect to correct pipe */
if (HAS_DDI(dev))
cntl |= CURSOR_PIPE_CSC_ENABLE;
if (plane_state->base.rotation == DRM_ROTATE_180)
cntl |= CURSOR_ROTATE_180;
}
if (intel_crtc->cursor_cntl != cntl) {
I915_WRITE(CURCNTR(pipe), cntl);
POSTING_READ(CURCNTR(pipe));
intel_crtc->cursor_cntl = cntl;
}
/* and commit changes on next vblank */
I915_WRITE(CURBASE(pipe), base);
POSTING_READ(CURBASE(pipe));
intel_crtc->cursor_base = base;
}
/* If no-part of the cursor is visible on the framebuffer, then the GPU may hang... */
static void intel_crtc_update_cursor(struct drm_crtc *crtc,
const struct intel_plane_state *plane_state)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
u32 base = intel_crtc->cursor_addr;
u32 pos = 0;
if (plane_state) {
int x = plane_state->base.crtc_x;
int y = plane_state->base.crtc_y;
if (x < 0) {
pos |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
x = -x;
}
pos |= x << CURSOR_X_SHIFT;
if (y < 0) {
pos |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
y = -y;
}
pos |= y << CURSOR_Y_SHIFT;
/* ILK+ do this automagically */
if (HAS_GMCH_DISPLAY(dev) &&
plane_state->base.rotation == DRM_ROTATE_180) {
base += (plane_state->base.crtc_h *
plane_state->base.crtc_w - 1) * 4;
}
}
I915_WRITE(CURPOS(pipe), pos);
if (IS_845G(dev) || IS_I865G(dev))
i845_update_cursor(crtc, base, plane_state);
else
i9xx_update_cursor(crtc, base, plane_state);
}
static bool cursor_size_ok(struct drm_device *dev,
uint32_t width, uint32_t height)
{
if (width == 0 || height == 0)
return false;
/*
* 845g/865g are special in that they are only limited by
* the width of their cursors, the height is arbitrary up to
* the precision of the register. Everything else requires
* square cursors, limited to a few power-of-two sizes.
*/
if (IS_845G(dev) || IS_I865G(dev)) {
if ((width & 63) != 0)
return false;
if (width > (IS_845G(dev) ? 64 : 512))
return false;
if (height > 1023)
return false;
} else {
switch (width | height) {
case 256:
case 128:
if (IS_GEN2(dev))
return false;
case 64:
break;
default:
return false;
}
}
return true;
}
/* VESA 640x480x72Hz mode to set on the pipe */
static struct drm_display_mode load_detect_mode = {
DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 31500, 640, 664,
704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
};
struct drm_framebuffer *
__intel_framebuffer_create(struct drm_device *dev,
struct drm_mode_fb_cmd2 *mode_cmd,
struct drm_i915_gem_object *obj)
{
struct intel_framebuffer *intel_fb;
int ret;
intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
if (!intel_fb)
return ERR_PTR(-ENOMEM);
ret = intel_framebuffer_init(dev, intel_fb, mode_cmd, obj);
if (ret)
goto err;
return &intel_fb->base;
err:
kfree(intel_fb);
return ERR_PTR(ret);
}
static struct drm_framebuffer *
intel_framebuffer_create(struct drm_device *dev,
struct drm_mode_fb_cmd2 *mode_cmd,
struct drm_i915_gem_object *obj)
{
struct drm_framebuffer *fb;
int ret;
ret = i915_mutex_lock_interruptible(dev);
if (ret)
return ERR_PTR(ret);
fb = __intel_framebuffer_create(dev, mode_cmd, obj);
mutex_unlock(&dev->struct_mutex);
return fb;
}
static u32
intel_framebuffer_pitch_for_width(int width, int bpp)
{
u32 pitch = DIV_ROUND_UP(width * bpp, 8);
return ALIGN(pitch, 64);
}
static u32
intel_framebuffer_size_for_mode(struct drm_display_mode *mode, int bpp)
{
u32 pitch = intel_framebuffer_pitch_for_width(mode->hdisplay, bpp);
return PAGE_ALIGN(pitch * mode->vdisplay);
}
static struct drm_framebuffer *
intel_framebuffer_create_for_mode(struct drm_device *dev,
struct drm_display_mode *mode,
int depth, int bpp)
{
struct drm_framebuffer *fb;
struct drm_i915_gem_object *obj;
struct drm_mode_fb_cmd2 mode_cmd = { 0 };
obj = i915_gem_object_create(dev,
intel_framebuffer_size_for_mode(mode, bpp));
if (IS_ERR(obj))
return ERR_CAST(obj);
mode_cmd.width = mode->hdisplay;
mode_cmd.height = mode->vdisplay;
mode_cmd.pitches[0] = intel_framebuffer_pitch_for_width(mode_cmd.width,
bpp);
mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
fb = intel_framebuffer_create(dev, &mode_cmd, obj);
if (IS_ERR(fb))
i915_gem_object_put_unlocked(obj);
return fb;
}
static struct drm_framebuffer *
mode_fits_in_fbdev(struct drm_device *dev,
struct drm_display_mode *mode)
{
#ifdef CONFIG_DRM_FBDEV_EMULATION
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_i915_gem_object *obj;
struct drm_framebuffer *fb;
if (!dev_priv->fbdev)
return NULL;
if (!dev_priv->fbdev->fb)
return NULL;
obj = dev_priv->fbdev->fb->obj;
BUG_ON(!obj);
fb = &dev_priv->fbdev->fb->base;
if (fb->pitches[0] < intel_framebuffer_pitch_for_width(mode->hdisplay,
fb->bits_per_pixel))
return NULL;
if (obj->base.size < mode->vdisplay * fb->pitches[0])
return NULL;
drm_framebuffer_reference(fb);
return fb;
#else
return NULL;
#endif
}
static int intel_modeset_setup_plane_state(struct drm_atomic_state *state,
struct drm_crtc *crtc,
struct drm_display_mode *mode,
struct drm_framebuffer *fb,
int x, int y)
{
struct drm_plane_state *plane_state;
int hdisplay, vdisplay;
int ret;
plane_state = drm_atomic_get_plane_state(state, crtc->primary);
if (IS_ERR(plane_state))
return PTR_ERR(plane_state);
if (mode)
drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
else
hdisplay = vdisplay = 0;
ret = drm_atomic_set_crtc_for_plane(plane_state, fb ? crtc : NULL);
if (ret)
return ret;
drm_atomic_set_fb_for_plane(plane_state, fb);
plane_state->crtc_x = 0;
plane_state->crtc_y = 0;
plane_state->crtc_w = hdisplay;
plane_state->crtc_h = vdisplay;
plane_state->src_x = x << 16;
plane_state->src_y = y << 16;
plane_state->src_w = hdisplay << 16;
plane_state->src_h = vdisplay << 16;
return 0;
}
bool intel_get_load_detect_pipe(struct drm_connector *connector,
struct drm_display_mode *mode,
struct intel_load_detect_pipe *old,
struct drm_modeset_acquire_ctx *ctx)
{
struct intel_crtc *intel_crtc;
struct intel_encoder *intel_encoder =
intel_attached_encoder(connector);
struct drm_crtc *possible_crtc;
struct drm_encoder *encoder = &intel_encoder->base;
struct drm_crtc *crtc = NULL;
struct drm_device *dev = encoder->dev;
struct drm_framebuffer *fb;
struct drm_mode_config *config = &dev->mode_config;
struct drm_atomic_state *state = NULL, *restore_state = NULL;
struct drm_connector_state *connector_state;
struct intel_crtc_state *crtc_state;
int ret, i = -1;
DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
connector->base.id, connector->name,
encoder->base.id, encoder->name);
old->restore_state = NULL;
retry:
ret = drm_modeset_lock(&config->connection_mutex, ctx);
if (ret)
goto fail;
/*
* Algorithm gets a little messy:
*
* - if the connector already has an assigned crtc, use it (but make
* sure it's on first)
*
* - try to find the first unused crtc that can drive this connector,
* and use that if we find one
*/
/* See if we already have a CRTC for this connector */
if (connector->state->crtc) {
crtc = connector->state->crtc;
ret = drm_modeset_lock(&crtc->mutex, ctx);
if (ret)
goto fail;
/* Make sure the crtc and connector are running */
goto found;
}
/* Find an unused one (if possible) */
for_each_crtc(dev, possible_crtc) {
i++;
if (!(encoder->possible_crtcs & (1 << i)))
continue;
ret = drm_modeset_lock(&possible_crtc->mutex, ctx);
if (ret)
goto fail;
if (possible_crtc->state->enable) {
drm_modeset_unlock(&possible_crtc->mutex);
continue;
}
crtc = possible_crtc;
break;
}
/*
* If we didn't find an unused CRTC, don't use any.
*/
if (!crtc) {
DRM_DEBUG_KMS("no pipe available for load-detect\n");
goto fail;
}
found:
intel_crtc = to_intel_crtc(crtc);
ret = drm_modeset_lock(&crtc->primary->mutex, ctx);
if (ret)
goto fail;
state = drm_atomic_state_alloc(dev);
restore_state = drm_atomic_state_alloc(dev);
if (!state || !restore_state) {
ret = -ENOMEM;
goto fail;
}
state->acquire_ctx = ctx;
restore_state->acquire_ctx = ctx;
connector_state = drm_atomic_get_connector_state(state, connector);
if (IS_ERR(connector_state)) {
ret = PTR_ERR(connector_state);
goto fail;
}
ret = drm_atomic_set_crtc_for_connector(connector_state, crtc);
if (ret)
goto fail;
crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
if (IS_ERR(crtc_state)) {
ret = PTR_ERR(crtc_state);
goto fail;
}
crtc_state->base.active = crtc_state->base.enable = true;
if (!mode)
mode = &load_detect_mode;
/* We need a framebuffer large enough to accommodate all accesses
* that the plane may generate whilst we perform load detection.
* We can not rely on the fbcon either being present (we get called
* during its initialisation to detect all boot displays, or it may
* not even exist) or that it is large enough to satisfy the
* requested mode.
*/
fb = mode_fits_in_fbdev(dev, mode);
if (fb == NULL) {
DRM_DEBUG_KMS("creating tmp fb for load-detection\n");
fb = intel_framebuffer_create_for_mode(dev, mode, 24, 32);
} else
DRM_DEBUG_KMS("reusing fbdev for load-detection framebuffer\n");
if (IS_ERR(fb)) {
DRM_DEBUG_KMS("failed to allocate framebuffer for load-detection\n");
goto fail;
}
ret = intel_modeset_setup_plane_state(state, crtc, mode, fb, 0, 0);
if (ret)
goto fail;
drm_framebuffer_unreference(fb);
ret = drm_atomic_set_mode_for_crtc(&crtc_state->base, mode);
if (ret)
goto fail;
ret = PTR_ERR_OR_ZERO(drm_atomic_get_connector_state(restore_state, connector));
if (!ret)
ret = PTR_ERR_OR_ZERO(drm_atomic_get_crtc_state(restore_state, crtc));
if (!ret)
ret = PTR_ERR_OR_ZERO(drm_atomic_get_plane_state(restore_state, crtc->primary));
if (ret) {
DRM_DEBUG_KMS("Failed to create a copy of old state to restore: %i\n", ret);
goto fail;
}
ret = drm_atomic_commit(state);
if (ret) {
DRM_DEBUG_KMS("failed to set mode on load-detect pipe\n");
goto fail;
}
old->restore_state = restore_state;
/* let the connector get through one full cycle before testing */
intel_wait_for_vblank(dev, intel_crtc->pipe);
return true;
fail:
drm_atomic_state_free(state);
drm_atomic_state_free(restore_state);
restore_state = state = NULL;
if (ret == -EDEADLK) {
drm_modeset_backoff(ctx);
goto retry;
}
return false;
}
void intel_release_load_detect_pipe(struct drm_connector *connector,
struct intel_load_detect_pipe *old,
struct drm_modeset_acquire_ctx *ctx)
{
struct intel_encoder *intel_encoder =
intel_attached_encoder(connector);
struct drm_encoder *encoder = &intel_encoder->base;
struct drm_atomic_state *state = old->restore_state;
int ret;
DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
connector->base.id, connector->name,
encoder->base.id, encoder->name);
if (!state)
return;
ret = drm_atomic_commit(state);
if (ret) {
DRM_DEBUG_KMS("Couldn't release load detect pipe: %i\n", ret);
drm_atomic_state_free(state);
}
}
static int i9xx_pll_refclk(struct drm_device *dev,
const struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(dev);
u32 dpll = pipe_config->dpll_hw_state.dpll;
if ((dpll & PLL_REF_INPUT_MASK) == PLLB_REF_INPUT_SPREADSPECTRUMIN)
return dev_priv->vbt.lvds_ssc_freq;
else if (HAS_PCH_SPLIT(dev))
return 120000;
else if (!IS_GEN2(dev))
return 96000;
else
return 48000;
}
/* Returns the clock of the currently programmed mode of the given pipe. */
static void i9xx_crtc_clock_get(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
int pipe = pipe_config->cpu_transcoder;
u32 dpll = pipe_config->dpll_hw_state.dpll;
u32 fp;
struct dpll clock;
int port_clock;
int refclk = i9xx_pll_refclk(dev, pipe_config);
if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
fp = pipe_config->dpll_hw_state.fp0;
else
fp = pipe_config->dpll_hw_state.fp1;
clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
if (IS_PINEVIEW(dev)) {
clock.n = ffs((fp & FP_N_PINEVIEW_DIV_MASK) >> FP_N_DIV_SHIFT) - 1;
clock.m2 = (fp & FP_M2_PINEVIEW_DIV_MASK) >> FP_M2_DIV_SHIFT;
} else {
clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT;
clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT;
}
if (!IS_GEN2(dev)) {
if (IS_PINEVIEW(dev))
clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_PINEVIEW) >>
DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW);
else
clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >>
DPLL_FPA01_P1_POST_DIV_SHIFT);
switch (dpll & DPLL_MODE_MASK) {
case DPLLB_MODE_DAC_SERIAL:
clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ?
5 : 10;
break;
case DPLLB_MODE_LVDS:
clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ?
7 : 14;
break;
default:
DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed "
"mode\n", (int)(dpll & DPLL_MODE_MASK));
return;
}
if (IS_PINEVIEW(dev))
port_clock = pnv_calc_dpll_params(refclk, &clock);
else
port_clock = i9xx_calc_dpll_params(refclk, &clock);
} else {
u32 lvds = IS_I830(dev) ? 0 : I915_READ(LVDS);
bool is_lvds = (pipe == 1) && (lvds & LVDS_PORT_EN);
if (is_lvds) {
clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >>
DPLL_FPA01_P1_POST_DIV_SHIFT);
if (lvds & LVDS_CLKB_POWER_UP)
clock.p2 = 7;
else
clock.p2 = 14;
} else {
if (dpll & PLL_P1_DIVIDE_BY_TWO)
clock.p1 = 2;
else {
clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >>
DPLL_FPA01_P1_POST_DIV_SHIFT) + 2;
}
if (dpll & PLL_P2_DIVIDE_BY_4)
clock.p2 = 4;
else
clock.p2 = 2;
}
port_clock = i9xx_calc_dpll_params(refclk, &clock);
}
/*
* This value includes pixel_multiplier. We will use
* port_clock to compute adjusted_mode.crtc_clock in the
* encoder's get_config() function.
*/
pipe_config->port_clock = port_clock;
}
int intel_dotclock_calculate(int link_freq,
const struct intel_link_m_n *m_n)
{
/*
* The calculation for the data clock is:
* pixel_clock = ((m/n)*(link_clock * nr_lanes))/bpp
* But we want to avoid losing precison if possible, so:
* pixel_clock = ((m * link_clock * nr_lanes)/(n*bpp))
*
* and the link clock is simpler:
* link_clock = (m * link_clock) / n
*/
if (!m_n->link_n)
return 0;
return div_u64((u64)m_n->link_m * link_freq, m_n->link_n);
}
static void ironlake_pch_clock_get(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
/* read out port_clock from the DPLL */
i9xx_crtc_clock_get(crtc, pipe_config);
/*
* In case there is an active pipe without active ports,
* we may need some idea for the dotclock anyway.
* Calculate one based on the FDI configuration.
*/
pipe_config->base.adjusted_mode.crtc_clock =
intel_dotclock_calculate(intel_fdi_link_freq(dev_priv, pipe_config),
&pipe_config->fdi_m_n);
}
/** Returns the currently programmed mode of the given pipe. */
struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
struct drm_crtc *crtc)
{
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
struct drm_display_mode *mode;
struct intel_crtc_state *pipe_config;
int htot = I915_READ(HTOTAL(cpu_transcoder));
int hsync = I915_READ(HSYNC(cpu_transcoder));
int vtot = I915_READ(VTOTAL(cpu_transcoder));
int vsync = I915_READ(VSYNC(cpu_transcoder));
enum pipe pipe = intel_crtc->pipe;
mode = kzalloc(sizeof(*mode), GFP_KERNEL);
if (!mode)
return NULL;
pipe_config = kzalloc(sizeof(*pipe_config), GFP_KERNEL);
if (!pipe_config) {
kfree(mode);
return NULL;
}
/*
* Construct a pipe_config sufficient for getting the clock info
* back out of crtc_clock_get.
*
* Note, if LVDS ever uses a non-1 pixel multiplier, we'll need
* to use a real value here instead.
*/
pipe_config->cpu_transcoder = (enum transcoder) pipe;
pipe_config->pixel_multiplier = 1;
pipe_config->dpll_hw_state.dpll = I915_READ(DPLL(pipe));
pipe_config->dpll_hw_state.fp0 = I915_READ(FP0(pipe));
pipe_config->dpll_hw_state.fp1 = I915_READ(FP1(pipe));
i9xx_crtc_clock_get(intel_crtc, pipe_config);
mode->clock = pipe_config->port_clock / pipe_config->pixel_multiplier;
mode->hdisplay = (htot & 0xffff) + 1;
mode->htotal = ((htot & 0xffff0000) >> 16) + 1;
mode->hsync_start = (hsync & 0xffff) + 1;
mode->hsync_end = ((hsync & 0xffff0000) >> 16) + 1;
mode->vdisplay = (vtot & 0xffff) + 1;
mode->vtotal = ((vtot & 0xffff0000) >> 16) + 1;
mode->vsync_start = (vsync & 0xffff) + 1;
mode->vsync_end = ((vsync & 0xffff0000) >> 16) + 1;
drm_mode_set_name(mode);
kfree(pipe_config);
return mode;
}
static void intel_crtc_destroy(struct drm_crtc *crtc)
{
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct drm_device *dev = crtc->dev;
struct intel_flip_work *work;
spin_lock_irq(&dev->event_lock);
work = intel_crtc->flip_work;
intel_crtc->flip_work = NULL;
spin_unlock_irq(&dev->event_lock);
if (work) {
cancel_work_sync(&work->mmio_work);
cancel_work_sync(&work->unpin_work);
kfree(work);
}
drm_crtc_cleanup(crtc);
kfree(intel_crtc);
}
static void intel_unpin_work_fn(struct work_struct *__work)
{
struct intel_flip_work *work =
container_of(__work, struct intel_flip_work, unpin_work);
struct intel_crtc *crtc = to_intel_crtc(work->crtc);
struct drm_device *dev = crtc->base.dev;
struct drm_plane *primary = crtc->base.primary;
if (is_mmio_work(work))
flush_work(&work->mmio_work);
mutex_lock(&dev->struct_mutex);
intel_unpin_fb_obj(work->old_fb, primary->state->rotation);
i915_gem_object_put(work->pending_flip_obj);
mutex_unlock(&dev->struct_mutex);
i915_gem_request_put(work->flip_queued_req);
intel_frontbuffer_flip_complete(to_i915(dev),
to_intel_plane(primary)->frontbuffer_bit);
intel_fbc_post_update(crtc);
drm_framebuffer_unreference(work->old_fb);
BUG_ON(atomic_read(&crtc->unpin_work_count) == 0);
atomic_dec(&crtc->unpin_work_count);
kfree(work);
}
/* Is 'a' after or equal to 'b'? */
static bool g4x_flip_count_after_eq(u32 a, u32 b)
{
return !((a - b) & 0x80000000);
}
static bool __pageflip_finished_cs(struct intel_crtc *crtc,
struct intel_flip_work *work)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
if (abort_flip_on_reset(crtc))
return true;
/*
* The relevant registers doen't exist on pre-ctg.
* As the flip done interrupt doesn't trigger for mmio
* flips on gmch platforms, a flip count check isn't
* really needed there. But since ctg has the registers,
* include it in the check anyway.
*/
if (INTEL_INFO(dev)->gen < 5 && !IS_G4X(dev))
return true;
/*
* BDW signals flip done immediately if the plane
* is disabled, even if the plane enable is already
* armed to occur at the next vblank :(
*/
/*
* A DSPSURFLIVE check isn't enough in case the mmio and CS flips
* used the same base address. In that case the mmio flip might
* have completed, but the CS hasn't even executed the flip yet.
*
* A flip count check isn't enough as the CS might have updated
* the base address just after start of vblank, but before we
* managed to process the interrupt. This means we'd complete the
* CS flip too soon.
*
* Combining both checks should get us a good enough result. It may
* still happen that the CS flip has been executed, but has not
* yet actually completed. But in case the base address is the same
* anyway, we don't really care.
*/
return (I915_READ(DSPSURFLIVE(crtc->plane)) & ~0xfff) ==
crtc->flip_work->gtt_offset &&
g4x_flip_count_after_eq(I915_READ(PIPE_FLIPCOUNT_G4X(crtc->pipe)),
crtc->flip_work->flip_count);
}
static bool
__pageflip_finished_mmio(struct intel_crtc *crtc,
struct intel_flip_work *work)
{
/*
* MMIO work completes when vblank is different from
* flip_queued_vblank.
*
* Reset counter value doesn't matter, this is handled by
* i915_wait_request finishing early, so no need to handle
* reset here.
*/
return intel_crtc_get_vblank_counter(crtc) != work->flip_queued_vblank;
}
static bool pageflip_finished(struct intel_crtc *crtc,
struct intel_flip_work *work)
{
if (!atomic_read(&work->pending))
return false;
smp_rmb();
if (is_mmio_work(work))
return __pageflip_finished_mmio(crtc, work);
else
return __pageflip_finished_cs(crtc, work);
}
void intel_finish_page_flip_cs(struct drm_i915_private *dev_priv, int pipe)
{
struct drm_device *dev = &dev_priv->drm;
struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_flip_work *work;
unsigned long flags;
/* Ignore early vblank irqs */
if (!crtc)
return;
/*
* This is called both by irq handlers and the reset code (to complete
* lost pageflips) so needs the full irqsave spinlocks.
*/
spin_lock_irqsave(&dev->event_lock, flags);
work = intel_crtc->flip_work;
if (work != NULL &&
!is_mmio_work(work) &&
pageflip_finished(intel_crtc, work))
page_flip_completed(intel_crtc);
spin_unlock_irqrestore(&dev->event_lock, flags);
}
void intel_finish_page_flip_mmio(struct drm_i915_private *dev_priv, int pipe)
{
struct drm_device *dev = &dev_priv->drm;
struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_flip_work *work;
unsigned long flags;
/* Ignore early vblank irqs */
if (!crtc)
return;
/*
* This is called both by irq handlers and the reset code (to complete
* lost pageflips) so needs the full irqsave spinlocks.
*/
spin_lock_irqsave(&dev->event_lock, flags);
work = intel_crtc->flip_work;
if (work != NULL &&
is_mmio_work(work) &&
pageflip_finished(intel_crtc, work))
page_flip_completed(intel_crtc);
spin_unlock_irqrestore(&dev->event_lock, flags);
}
static inline void intel_mark_page_flip_active(struct intel_crtc *crtc,
struct intel_flip_work *work)
{
work->flip_queued_vblank = intel_crtc_get_vblank_counter(crtc);
/* Ensure that the work item is consistent when activating it ... */
smp_mb__before_atomic();
atomic_set(&work->pending, 1);
}
static int intel_gen2_queue_flip(struct drm_device *dev,
struct drm_crtc *crtc,
struct drm_framebuffer *fb,
struct drm_i915_gem_object *obj,
struct drm_i915_gem_request *req,
uint32_t flags)
{
struct intel_ring *ring = req->ring;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
u32 flip_mask;
int ret;
ret = intel_ring_begin(req, 6);
if (ret)
return ret;
/* Can't queue multiple flips, so wait for the previous
* one to finish before executing the next.
*/
if (intel_crtc->plane)
flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
else
flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
intel_ring_emit(ring, MI_WAIT_FOR_EVENT | flip_mask);
intel_ring_emit(ring, MI_NOOP);
intel_ring_emit(ring, MI_DISPLAY_FLIP |
MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
intel_ring_emit(ring, fb->pitches[0]);
intel_ring_emit(ring, intel_crtc->flip_work->gtt_offset);
intel_ring_emit(ring, 0); /* aux display base address, unused */
return 0;
}
static int intel_gen3_queue_flip(struct drm_device *dev,
struct drm_crtc *crtc,
struct drm_framebuffer *fb,
struct drm_i915_gem_object *obj,
struct drm_i915_gem_request *req,
uint32_t flags)
{
struct intel_ring *ring = req->ring;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
u32 flip_mask;
int ret;
ret = intel_ring_begin(req, 6);
if (ret)
return ret;
if (intel_crtc->plane)
flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
else
flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
intel_ring_emit(ring, MI_WAIT_FOR_EVENT | flip_mask);
intel_ring_emit(ring, MI_NOOP);
intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 |
MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
intel_ring_emit(ring, fb->pitches[0]);
intel_ring_emit(ring, intel_crtc->flip_work->gtt_offset);
intel_ring_emit(ring, MI_NOOP);
return 0;
}
static int intel_gen4_queue_flip(struct drm_device *dev,
struct drm_crtc *crtc,
struct drm_framebuffer *fb,
struct drm_i915_gem_object *obj,
struct drm_i915_gem_request *req,
uint32_t flags)
{
struct intel_ring *ring = req->ring;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
uint32_t pf, pipesrc;
int ret;
ret = intel_ring_begin(req, 4);
if (ret)
return ret;
/* i965+ uses the linear or tiled offsets from the
* Display Registers (which do not change across a page-flip)
* so we need only reprogram the base address.
*/
intel_ring_emit(ring, MI_DISPLAY_FLIP |
MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
intel_ring_emit(ring, fb->pitches[0]);
intel_ring_emit(ring, intel_crtc->flip_work->gtt_offset |
intel_fb_modifier_to_tiling(fb->modifier[0]));
/* XXX Enabling the panel-fitter across page-flip is so far
* untested on non-native modes, so ignore it for now.
* pf = I915_READ(pipe == 0 ? PFA_CTL_1 : PFB_CTL_1) & PF_ENABLE;
*/
pf = 0;
pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
intel_ring_emit(ring, pf | pipesrc);
return 0;
}
static int intel_gen6_queue_flip(struct drm_device *dev,
struct drm_crtc *crtc,
struct drm_framebuffer *fb,
struct drm_i915_gem_object *obj,
struct drm_i915_gem_request *req,
uint32_t flags)
{
struct intel_ring *ring = req->ring;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
uint32_t pf, pipesrc;
int ret;
ret = intel_ring_begin(req, 4);
if (ret)
return ret;
intel_ring_emit(ring, MI_DISPLAY_FLIP |
MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
intel_ring_emit(ring, fb->pitches[0] |
intel_fb_modifier_to_tiling(fb->modifier[0]));
intel_ring_emit(ring, intel_crtc->flip_work->gtt_offset);
/* Contrary to the suggestions in the documentation,
* "Enable Panel Fitter" does not seem to be required when page
* flipping with a non-native mode, and worse causes a normal
* modeset to fail.
* pf = I915_READ(PF_CTL(intel_crtc->pipe)) & PF_ENABLE;
*/
pf = 0;
pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
intel_ring_emit(ring, pf | pipesrc);
return 0;
}
static int intel_gen7_queue_flip(struct drm_device *dev,
struct drm_crtc *crtc,
struct drm_framebuffer *fb,
struct drm_i915_gem_object *obj,
struct drm_i915_gem_request *req,
uint32_t flags)
{
struct intel_ring *ring = req->ring;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
uint32_t plane_bit = 0;
int len, ret;
switch (intel_crtc->plane) {
case PLANE_A:
plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_A;
break;
case PLANE_B:
plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_B;
break;
case PLANE_C:
plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_C;
break;
default:
WARN_ONCE(1, "unknown plane in flip command\n");
return -ENODEV;
}
len = 4;
if (req->engine->id == RCS) {
len += 6;
/*
* On Gen 8, SRM is now taking an extra dword to accommodate
* 48bits addresses, and we need a NOOP for the batch size to
* stay even.
*/
if (IS_GEN8(dev))
len += 2;
}
/*
* BSpec MI_DISPLAY_FLIP for IVB:
* "The full packet must be contained within the same cache line."
*
* Currently the LRI+SRM+MI_DISPLAY_FLIP all fit within the same
* cacheline, if we ever start emitting more commands before
* the MI_DISPLAY_FLIP we may need to first emit everything else,
* then do the cacheline alignment, and finally emit the
* MI_DISPLAY_FLIP.
*/
ret = intel_ring_cacheline_align(req);
if (ret)
return ret;
ret = intel_ring_begin(req, len);
if (ret)
return ret;
/* Unmask the flip-done completion message. Note that the bspec says that
* we should do this for both the BCS and RCS, and that we must not unmask
* more than one flip event at any time (or ensure that one flip message
* can be sent by waiting for flip-done prior to queueing new flips).
* Experimentation says that BCS works despite DERRMR masking all
* flip-done completion events and that unmasking all planes at once
* for the RCS also doesn't appear to drop events. Setting the DERRMR
* to zero does lead to lockups within MI_DISPLAY_FLIP.
*/
if (req->engine->id == RCS) {
intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(1));
intel_ring_emit_reg(ring, DERRMR);
intel_ring_emit(ring, ~(DERRMR_PIPEA_PRI_FLIP_DONE |
DERRMR_PIPEB_PRI_FLIP_DONE |
DERRMR_PIPEC_PRI_FLIP_DONE));
if (IS_GEN8(dev))
intel_ring_emit(ring, MI_STORE_REGISTER_MEM_GEN8 |
MI_SRM_LRM_GLOBAL_GTT);
else
intel_ring_emit(ring, MI_STORE_REGISTER_MEM |
MI_SRM_LRM_GLOBAL_GTT);
intel_ring_emit_reg(ring, DERRMR);
intel_ring_emit(ring,
i915_ggtt_offset(req->engine->scratch) + 256);
if (IS_GEN8(dev)) {
intel_ring_emit(ring, 0);
intel_ring_emit(ring, MI_NOOP);
}
}
intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 | plane_bit);
intel_ring_emit(ring, fb->pitches[0] |
intel_fb_modifier_to_tiling(fb->modifier[0]));
intel_ring_emit(ring, intel_crtc->flip_work->gtt_offset);
intel_ring_emit(ring, (MI_NOOP));
return 0;
}
static bool use_mmio_flip(struct intel_engine_cs *engine,
struct drm_i915_gem_object *obj)
{
struct reservation_object *resv;
/*
* This is not being used for older platforms, because
* non-availability of flip done interrupt forces us to use
* CS flips. Older platforms derive flip done using some clever
* tricks involving the flip_pending status bits and vblank irqs.
* So using MMIO flips there would disrupt this mechanism.
*/
if (engine == NULL)
return true;
if (INTEL_GEN(engine->i915) < 5)
return false;
if (i915.use_mmio_flip < 0)
return false;
else if (i915.use_mmio_flip > 0)
return true;
else if (i915.enable_execlists)
return true;
resv = i915_gem_object_get_dmabuf_resv(obj);
if (resv && !reservation_object_test_signaled_rcu(resv, false))
return true;
return engine != i915_gem_active_get_engine(&obj->last_write,
&obj->base.dev->struct_mutex);
}
static void skl_do_mmio_flip(struct intel_crtc *intel_crtc,
unsigned int rotation,
struct intel_flip_work *work)
{
struct drm_device *dev = intel_crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_framebuffer *fb = intel_crtc->base.primary->fb;
const enum pipe pipe = intel_crtc->pipe;
u32 ctl, stride = skl_plane_stride(fb, 0, rotation);
ctl = I915_READ(PLANE_CTL(pipe, 0));
ctl &= ~PLANE_CTL_TILED_MASK;
switch (fb->modifier[0]) {
case DRM_FORMAT_MOD_NONE:
break;
case I915_FORMAT_MOD_X_TILED:
ctl |= PLANE_CTL_TILED_X;
break;
case I915_FORMAT_MOD_Y_TILED:
ctl |= PLANE_CTL_TILED_Y;
break;
case I915_FORMAT_MOD_Yf_TILED:
ctl |= PLANE_CTL_TILED_YF;
break;
default:
MISSING_CASE(fb->modifier[0]);
}
/*
* Both PLANE_CTL and PLANE_STRIDE are not updated on vblank but on
* PLANE_SURF updates, the update is then guaranteed to be atomic.
*/
I915_WRITE(PLANE_CTL(pipe, 0), ctl);
I915_WRITE(PLANE_STRIDE(pipe, 0), stride);
I915_WRITE(PLANE_SURF(pipe, 0), work->gtt_offset);
POSTING_READ(PLANE_SURF(pipe, 0));
}
static void ilk_do_mmio_flip(struct intel_crtc *intel_crtc,
struct intel_flip_work *work)
{
struct drm_device *dev = intel_crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_framebuffer *fb = intel_crtc->base.primary->fb;
i915_reg_t reg = DSPCNTR(intel_crtc->plane);
u32 dspcntr;
dspcntr = I915_READ(reg);
if (fb->modifier[0] == I915_FORMAT_MOD_X_TILED)
dspcntr |= DISPPLANE_TILED;
else
dspcntr &= ~DISPPLANE_TILED;
I915_WRITE(reg, dspcntr);
I915_WRITE(DSPSURF(intel_crtc->plane), work->gtt_offset);
POSTING_READ(DSPSURF(intel_crtc->plane));
}
static void intel_mmio_flip_work_func(struct work_struct *w)
{
struct intel_flip_work *work =
container_of(w, struct intel_flip_work, mmio_work);
struct intel_crtc *crtc = to_intel_crtc(work->crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
struct intel_framebuffer *intel_fb =
to_intel_framebuffer(crtc->base.primary->fb);
struct drm_i915_gem_object *obj = intel_fb->obj;
struct reservation_object *resv;
if (work->flip_queued_req)
WARN_ON(i915_wait_request(work->flip_queued_req,
0, NULL, NO_WAITBOOST));
/* For framebuffer backed by dmabuf, wait for fence */
resv = i915_gem_object_get_dmabuf_resv(obj);
if (resv)
WARN_ON(reservation_object_wait_timeout_rcu(resv, false, false,
MAX_SCHEDULE_TIMEOUT) < 0);
intel_pipe_update_start(crtc);
if (INTEL_GEN(dev_priv) >= 9)
skl_do_mmio_flip(crtc, work->rotation, work);
else
/* use_mmio_flip() retricts MMIO flips to ilk+ */
ilk_do_mmio_flip(crtc, work);
intel_pipe_update_end(crtc, work);
}
static int intel_default_queue_flip(struct drm_device *dev,
struct drm_crtc *crtc,
struct drm_framebuffer *fb,
struct drm_i915_gem_object *obj,
struct drm_i915_gem_request *req,
uint32_t flags)
{
return -ENODEV;
}
static bool __pageflip_stall_check_cs(struct drm_i915_private *dev_priv,
struct intel_crtc *intel_crtc,
struct intel_flip_work *work)
{
u32 addr, vblank;
if (!atomic_read(&work->pending))
return false;
smp_rmb();
vblank = intel_crtc_get_vblank_counter(intel_crtc);
if (work->flip_ready_vblank == 0) {
if (work->flip_queued_req &&
!i915_gem_request_completed(work->flip_queued_req))
return false;
work->flip_ready_vblank = vblank;
}
if (vblank - work->flip_ready_vblank < 3)
return false;
/* Potential stall - if we see that the flip has happened,
* assume a missed interrupt. */
if (INTEL_GEN(dev_priv) >= 4)
addr = I915_HI_DISPBASE(I915_READ(DSPSURF(intel_crtc->plane)));
else
addr = I915_READ(DSPADDR(intel_crtc->plane));
/* There is a potential issue here with a false positive after a flip
* to the same address. We could address this by checking for a
* non-incrementing frame counter.
*/
return addr == work->gtt_offset;
}
void intel_check_page_flip(struct drm_i915_private *dev_priv, int pipe)
{
struct drm_device *dev = &dev_priv->drm;
struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_flip_work *work;
WARN_ON(!in_interrupt());
if (crtc == NULL)
return;
spin_lock(&dev->event_lock);
work = intel_crtc->flip_work;
if (work != NULL && !is_mmio_work(work) &&
__pageflip_stall_check_cs(dev_priv, intel_crtc, work)) {
WARN_ONCE(1,
"Kicking stuck page flip: queued at %d, now %d\n",
work->flip_queued_vblank, intel_crtc_get_vblank_counter(intel_crtc));
page_flip_completed(intel_crtc);
work = NULL;
}
if (work != NULL && !is_mmio_work(work) &&
intel_crtc_get_vblank_counter(intel_crtc) - work->flip_queued_vblank > 1)
intel_queue_rps_boost_for_request(work->flip_queued_req);
spin_unlock(&dev->event_lock);
}
static int intel_crtc_page_flip(struct drm_crtc *crtc,
struct drm_framebuffer *fb,
struct drm_pending_vblank_event *event,
uint32_t page_flip_flags)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_framebuffer *old_fb = crtc->primary->fb;
struct drm_i915_gem_object *obj = intel_fb_obj(fb);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct drm_plane *primary = crtc->primary;
enum pipe pipe = intel_crtc->pipe;
struct intel_flip_work *work;
struct intel_engine_cs *engine;
bool mmio_flip;
struct drm_i915_gem_request *request;
struct i915_vma *vma;
int ret;
/*
* drm_mode_page_flip_ioctl() should already catch this, but double
* check to be safe. In the future we may enable pageflipping from
* a disabled primary plane.
*/
if (WARN_ON(intel_fb_obj(old_fb) == NULL))
return -EBUSY;
/* Can't change pixel format via MI display flips. */
if (fb->pixel_format != crtc->primary->fb->pixel_format)
return -EINVAL;
/*
* TILEOFF/LINOFF registers can't be changed via MI display flips.
* Note that pitch changes could also affect these register.
*/
if (INTEL_INFO(dev)->gen > 3 &&
(fb->offsets[0] != crtc->primary->fb->offsets[0] ||
fb->pitches[0] != crtc->primary->fb->pitches[0]))
return -EINVAL;
if (i915_terminally_wedged(&dev_priv->gpu_error))
goto out_hang;
work = kzalloc(sizeof(*work), GFP_KERNEL);
if (work == NULL)
return -ENOMEM;
work->event = event;
work->crtc = crtc;
work->old_fb = old_fb;
INIT_WORK(&work->unpin_work, intel_unpin_work_fn);
ret = drm_crtc_vblank_get(crtc);
if (ret)
goto free_work;
/* We borrow the event spin lock for protecting flip_work */
spin_lock_irq(&dev->event_lock);
if (intel_crtc->flip_work) {
/* Before declaring the flip queue wedged, check if
* the hardware completed the operation behind our backs.
*/
if (pageflip_finished(intel_crtc, intel_crtc->flip_work)) {
DRM_DEBUG_DRIVER("flip queue: previous flip completed, continuing\n");
page_flip_completed(intel_crtc);
} else {
DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
spin_unlock_irq(&dev->event_lock);
drm_crtc_vblank_put(crtc);
kfree(work);
return -EBUSY;
}
}
intel_crtc->flip_work = work;
spin_unlock_irq(&dev->event_lock);
if (atomic_read(&intel_crtc->unpin_work_count) >= 2)
flush_workqueue(dev_priv->wq);
/* Reference the objects for the scheduled work. */
drm_framebuffer_reference(work->old_fb);
crtc->primary->fb = fb;
update_state_fb(crtc->primary);
work->pending_flip_obj = i915_gem_object_get(obj);
ret = i915_mutex_lock_interruptible(dev);
if (ret)
goto cleanup;
intel_crtc->reset_count = i915_reset_count(&dev_priv->gpu_error);
if (i915_reset_in_progress_or_wedged(&dev_priv->gpu_error)) {
ret = -EIO;
goto cleanup;
}
atomic_inc(&intel_crtc->unpin_work_count);
if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev))
work->flip_count = I915_READ(PIPE_FLIPCOUNT_G4X(pipe)) + 1;
if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) {
engine = &dev_priv->engine[BCS];
if (fb->modifier[0] != old_fb->modifier[0])
/* vlv: DISPLAY_FLIP fails to change tiling */
engine = NULL;
} else if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev)) {
engine = &dev_priv->engine[BCS];
} else if (INTEL_INFO(dev)->gen >= 7) {
engine = i915_gem_active_get_engine(&obj->last_write,
&obj->base.dev->struct_mutex);
if (engine == NULL || engine->id != RCS)
engine = &dev_priv->engine[BCS];
} else {
engine = &dev_priv->engine[RCS];
}
mmio_flip = use_mmio_flip(engine, obj);
vma = intel_pin_and_fence_fb_obj(fb, primary->state->rotation);
if (IS_ERR(vma)) {
ret = PTR_ERR(vma);
goto cleanup_pending;
}
work->gtt_offset = intel_fb_gtt_offset(fb, primary->state->rotation);
work->gtt_offset += intel_crtc->dspaddr_offset;
work->rotation = crtc->primary->state->rotation;
/*
* There's the potential that the next frame will not be compatible with
* FBC, so we want to call pre_update() before the actual page flip.
* The problem is that pre_update() caches some information about the fb
* object, so we want to do this only after the object is pinned. Let's
* be on the safe side and do this immediately before scheduling the
* flip.
*/
intel_fbc_pre_update(intel_crtc, intel_crtc->config,
to_intel_plane_state(primary->state));
if (mmio_flip) {
INIT_WORK(&work->mmio_work, intel_mmio_flip_work_func);
work->flip_queued_req = i915_gem_active_get(&obj->last_write,
&obj->base.dev->struct_mutex);
queue_work(system_unbound_wq, &work->mmio_work);
} else {
request = i915_gem_request_alloc(engine, engine->last_context);
if (IS_ERR(request)) {
ret = PTR_ERR(request);
goto cleanup_unpin;
}
ret = i915_gem_request_await_object(request, obj, false);
if (ret)
goto cleanup_request;
ret = dev_priv->display.queue_flip(dev, crtc, fb, obj, request,
page_flip_flags);
if (ret)
goto cleanup_request;
intel_mark_page_flip_active(intel_crtc, work);
work->flip_queued_req = i915_gem_request_get(request);
i915_add_request_no_flush(request);
}
i915_gem_track_fb(intel_fb_obj(old_fb), obj,
to_intel_plane(primary)->frontbuffer_bit);
mutex_unlock(&dev->struct_mutex);
intel_frontbuffer_flip_prepare(to_i915(dev),
to_intel_plane(primary)->frontbuffer_bit);
trace_i915_flip_request(intel_crtc->plane, obj);
return 0;
cleanup_request:
i915_add_request_no_flush(request);
cleanup_unpin:
intel_unpin_fb_obj(fb, crtc->primary->state->rotation);
cleanup_pending:
atomic_dec(&intel_crtc->unpin_work_count);
mutex_unlock(&dev->struct_mutex);
cleanup:
crtc->primary->fb = old_fb;
update_state_fb(crtc->primary);
i915_gem_object_put_unlocked(obj);
drm_framebuffer_unreference(work->old_fb);
spin_lock_irq(&dev->event_lock);
intel_crtc->flip_work = NULL;
spin_unlock_irq(&dev->event_lock);
drm_crtc_vblank_put(crtc);
free_work:
kfree(work);
if (ret == -EIO) {
struct drm_atomic_state *state;
struct drm_plane_state *plane_state;
out_hang:
state = drm_atomic_state_alloc(dev);
if (!state)
return -ENOMEM;
state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc);
retry:
plane_state = drm_atomic_get_plane_state(state, primary);
ret = PTR_ERR_OR_ZERO(plane_state);
if (!ret) {
drm_atomic_set_fb_for_plane(plane_state, fb);
ret = drm_atomic_set_crtc_for_plane(plane_state, crtc);
if (!ret)
ret = drm_atomic_commit(state);
}
if (ret == -EDEADLK) {
drm_modeset_backoff(state->acquire_ctx);
drm_atomic_state_clear(state);
goto retry;
}
if (ret)
drm_atomic_state_free(state);
if (ret == 0 && event) {
spin_lock_irq(&dev->event_lock);
drm_crtc_send_vblank_event(crtc, event);
spin_unlock_irq(&dev->event_lock);
}
}
return ret;
}
/**
* intel_wm_need_update - Check whether watermarks need updating
* @plane: drm plane
* @state: new plane state
*
* Check current plane state versus the new one to determine whether
* watermarks need to be recalculated.
*
* Returns true or false.
*/
static bool intel_wm_need_update(struct drm_plane *plane,
struct drm_plane_state *state)
{
struct intel_plane_state *new = to_intel_plane_state(state);
struct intel_plane_state *cur = to_intel_plane_state(plane->state);
/* Update watermarks on tiling or size changes. */
if (new->base.visible != cur->base.visible)
return true;
if (!cur->base.fb || !new->base.fb)
return false;
if (cur->base.fb->modifier[0] != new->base.fb->modifier[0] ||
cur->base.rotation != new->base.rotation ||
drm_rect_width(&new->base.src) != drm_rect_width(&cur->base.src) ||
drm_rect_height(&new->base.src) != drm_rect_height(&cur->base.src) ||
drm_rect_width(&new->base.dst) != drm_rect_width(&cur->base.dst) ||
drm_rect_height(&new->base.dst) != drm_rect_height(&cur->base.dst))
return true;
return false;
}
static bool needs_scaling(struct intel_plane_state *state)
{
int src_w = drm_rect_width(&state->base.src) >> 16;
int src_h = drm_rect_height(&state->base.src) >> 16;
int dst_w = drm_rect_width(&state->base.dst);
int dst_h = drm_rect_height(&state->base.dst);
return (src_w != dst_w || src_h != dst_h);
}
int intel_plane_atomic_calc_changes(struct drm_crtc_state *crtc_state,
struct drm_plane_state *plane_state)
{
struct intel_crtc_state *pipe_config = to_intel_crtc_state(crtc_state);
struct drm_crtc *crtc = crtc_state->crtc;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct drm_plane *plane = plane_state->plane;
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_plane_state *old_plane_state =
to_intel_plane_state(plane->state);
bool mode_changed = needs_modeset(crtc_state);
bool was_crtc_enabled = crtc->state->active;
bool is_crtc_enabled = crtc_state->active;
bool turn_off, turn_on, visible, was_visible;
struct drm_framebuffer *fb = plane_state->fb;
int ret;
if (INTEL_GEN(dev) >= 9 && plane->type != DRM_PLANE_TYPE_CURSOR) {
ret = skl_update_scaler_plane(
to_intel_crtc_state(crtc_state),
to_intel_plane_state(plane_state));
if (ret)
return ret;
}
was_visible = old_plane_state->base.visible;
visible = to_intel_plane_state(plane_state)->base.visible;
if (!was_crtc_enabled && WARN_ON(was_visible))
was_visible = false;
/*
* Visibility is calculated as if the crtc was on, but
* after scaler setup everything depends on it being off
* when the crtc isn't active.
*
* FIXME this is wrong for watermarks. Watermarks should also
* be computed as if the pipe would be active. Perhaps move
* per-plane wm computation to the .check_plane() hook, and
* only combine the results from all planes in the current place?
*/
if (!is_crtc_enabled)
to_intel_plane_state(plane_state)->base.visible = visible = false;
if (!was_visible && !visible)
return 0;
if (fb != old_plane_state->base.fb)
pipe_config->fb_changed = true;
turn_off = was_visible && (!visible || mode_changed);
turn_on = visible && (!was_visible || mode_changed);
DRM_DEBUG_ATOMIC("[CRTC:%d:%s] has [PLANE:%d:%s] with fb %i\n",
intel_crtc->base.base.id,
intel_crtc->base.name,
plane->base.id, plane->name,
fb ? fb->base.id : -1);
DRM_DEBUG_ATOMIC("[PLANE:%d:%s] visible %i -> %i, off %i, on %i, ms %i\n",
plane->base.id, plane->name,
was_visible, visible,
turn_off, turn_on, mode_changed);
if (turn_on) {
pipe_config->update_wm_pre = true;
/* must disable cxsr around plane enable/disable */
if (plane->type != DRM_PLANE_TYPE_CURSOR)
pipe_config->disable_cxsr = true;
} else if (turn_off) {
pipe_config->update_wm_post = true;
/* must disable cxsr around plane enable/disable */
if (plane->type != DRM_PLANE_TYPE_CURSOR)
pipe_config->disable_cxsr = true;
} else if (intel_wm_need_update(plane, plane_state)) {
/* FIXME bollocks */
pipe_config->update_wm_pre = true;
pipe_config->update_wm_post = true;
}
/* Pre-gen9 platforms need two-step watermark updates */
if ((pipe_config->update_wm_pre || pipe_config->update_wm_post) &&
INTEL_INFO(dev)->gen < 9 && dev_priv->display.optimize_watermarks)
to_intel_crtc_state(crtc_state)->wm.need_postvbl_update = true;
if (visible || was_visible)
pipe_config->fb_bits |= to_intel_plane(plane)->frontbuffer_bit;
/*
* WaCxSRDisabledForSpriteScaling:ivb
*
* cstate->update_wm was already set above, so this flag will
* take effect when we commit and program watermarks.
*/
if (plane->type == DRM_PLANE_TYPE_OVERLAY && IS_IVYBRIDGE(dev) &&
needs_scaling(to_intel_plane_state(plane_state)) &&
!needs_scaling(old_plane_state))
pipe_config->disable_lp_wm = true;
return 0;
}
static bool encoders_cloneable(const struct intel_encoder *a,
const struct intel_encoder *b)
{
/* masks could be asymmetric, so check both ways */
return a == b || (a->cloneable & (1 << b->type) &&
b->cloneable & (1 << a->type));
}
static bool check_single_encoder_cloning(struct drm_atomic_state *state,
struct intel_crtc *crtc,
struct intel_encoder *encoder)
{
struct intel_encoder *source_encoder;
struct drm_connector *connector;
struct drm_connector_state *connector_state;
int i;
for_each_connector_in_state(state, connector, connector_state, i) {
if (connector_state->crtc != &crtc->base)
continue;
source_encoder =
to_intel_encoder(connector_state->best_encoder);
if (!encoders_cloneable(encoder, source_encoder))
return false;
}
return true;
}
static int intel_crtc_atomic_check(struct drm_crtc *crtc,
struct drm_crtc_state *crtc_state)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_crtc_state *pipe_config =
to_intel_crtc_state(crtc_state);
struct drm_atomic_state *state = crtc_state->state;
int ret;
bool mode_changed = needs_modeset(crtc_state);
if (mode_changed && !crtc_state->active)
pipe_config->update_wm_post = true;
if (mode_changed && crtc_state->enable &&
dev_priv->display.crtc_compute_clock &&
!WARN_ON(pipe_config->shared_dpll)) {
ret = dev_priv->display.crtc_compute_clock(intel_crtc,
pipe_config);
if (ret)
return ret;
}
if (crtc_state->color_mgmt_changed) {
ret = intel_color_check(crtc, crtc_state);
if (ret)
return ret;
/*
* Changing color management on Intel hardware is
* handled as part of planes update.
*/
crtc_state->planes_changed = true;
}
ret = 0;
if (dev_priv->display.compute_pipe_wm) {
ret = dev_priv->display.compute_pipe_wm(pipe_config);
if (ret) {
DRM_DEBUG_KMS("Target pipe watermarks are invalid\n");
return ret;
}
}
if (dev_priv->display.compute_intermediate_wm &&
!to_intel_atomic_state(state)->skip_intermediate_wm) {
if (WARN_ON(!dev_priv->display.compute_pipe_wm))
return 0;
/*
* Calculate 'intermediate' watermarks that satisfy both the
* old state and the new state. We can program these
* immediately.
*/
ret = dev_priv->display.compute_intermediate_wm(crtc->dev,
intel_crtc,
pipe_config);
if (ret) {
DRM_DEBUG_KMS("No valid intermediate pipe watermarks are possible\n");
return ret;
}
} else if (dev_priv->display.compute_intermediate_wm) {
if (HAS_PCH_SPLIT(dev_priv) && INTEL_GEN(dev_priv) < 9)
pipe_config->wm.ilk.intermediate = pipe_config->wm.ilk.optimal;
}
if (INTEL_INFO(dev)->gen >= 9) {
if (mode_changed)
ret = skl_update_scaler_crtc(pipe_config);
if (!ret)
ret = intel_atomic_setup_scalers(dev, intel_crtc,
pipe_config);
}
return ret;
}
static const struct drm_crtc_helper_funcs intel_helper_funcs = {
.mode_set_base_atomic = intel_pipe_set_base_atomic,
.atomic_begin = intel_begin_crtc_commit,
.atomic_flush = intel_finish_crtc_commit,
.atomic_check = intel_crtc_atomic_check,
};
static void intel_modeset_update_connector_atomic_state(struct drm_device *dev)
{
struct intel_connector *connector;
for_each_intel_connector(dev, connector) {
if (connector->base.state->crtc)
drm_connector_unreference(&connector->base);
if (connector->base.encoder) {
connector->base.state->best_encoder =
connector->base.encoder;
connector->base.state->crtc =
connector->base.encoder->crtc;
drm_connector_reference(&connector->base);
} else {
connector->base.state->best_encoder = NULL;
connector->base.state->crtc = NULL;
}
}
}
static void
connected_sink_compute_bpp(struct intel_connector *connector,
struct intel_crtc_state *pipe_config)
{
const struct drm_display_info *info = &connector->base.display_info;
int bpp = pipe_config->pipe_bpp;
DRM_DEBUG_KMS("[CONNECTOR:%d:%s] checking for sink bpp constrains\n",
connector->base.base.id,
connector->base.name);
/* Don't use an invalid EDID bpc value */
if (info->bpc != 0 && info->bpc * 3 < bpp) {
DRM_DEBUG_KMS("clamping display bpp (was %d) to EDID reported max of %d\n",
bpp, info->bpc * 3);
pipe_config->pipe_bpp = info->bpc * 3;
}
/* Clamp bpp to 8 on screens without EDID 1.4 */
if (info->bpc == 0 && bpp > 24) {
DRM_DEBUG_KMS("clamping display bpp (was %d) to default limit of 24\n",
bpp);
pipe_config->pipe_bpp = 24;
}
}
static int
compute_baseline_pipe_bpp(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_atomic_state *state;
struct drm_connector *connector;
struct drm_connector_state *connector_state;
int bpp, i;
if ((IS_G4X(dev) || IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)))
bpp = 10*3;
else if (INTEL_INFO(dev)->gen >= 5)
bpp = 12*3;
else
bpp = 8*3;
pipe_config->pipe_bpp = bpp;
state = pipe_config->base.state;
/* Clamp display bpp to EDID value */
for_each_connector_in_state(state, connector, connector_state, i) {
if (connector_state->crtc != &crtc->base)
continue;
connected_sink_compute_bpp(to_intel_connector(connector),
pipe_config);
}
return bpp;
}
static void intel_dump_crtc_timings(const struct drm_display_mode *mode)
{
DRM_DEBUG_KMS("crtc timings: %d %d %d %d %d %d %d %d %d, "
"type: 0x%x flags: 0x%x\n",
mode->crtc_clock,
mode->crtc_hdisplay, mode->crtc_hsync_start,
mode->crtc_hsync_end, mode->crtc_htotal,
mode->crtc_vdisplay, mode->crtc_vsync_start,
mode->crtc_vsync_end, mode->crtc_vtotal, mode->type, mode->flags);
}
static void intel_dump_pipe_config(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config,
const char *context)
{
struct drm_device *dev = crtc->base.dev;
struct drm_plane *plane;
struct intel_plane *intel_plane;
struct intel_plane_state *state;
struct drm_framebuffer *fb;
DRM_DEBUG_KMS("[CRTC:%d:%s]%s config %p for pipe %c\n",
crtc->base.base.id, crtc->base.name,
context, pipe_config, pipe_name(crtc->pipe));
DRM_DEBUG_KMS("cpu_transcoder: %s\n", transcoder_name(pipe_config->cpu_transcoder));
DRM_DEBUG_KMS("pipe bpp: %i, dithering: %i\n",
pipe_config->pipe_bpp, pipe_config->dither);
DRM_DEBUG_KMS("fdi/pch: %i, lanes: %i, gmch_m: %u, gmch_n: %u, link_m: %u, link_n: %u, tu: %u\n",
pipe_config->has_pch_encoder,
pipe_config->fdi_lanes,
pipe_config->fdi_m_n.gmch_m, pipe_config->fdi_m_n.gmch_n,
pipe_config->fdi_m_n.link_m, pipe_config->fdi_m_n.link_n,
pipe_config->fdi_m_n.tu);
DRM_DEBUG_KMS("dp: %i, lanes: %i, gmch_m: %u, gmch_n: %u, link_m: %u, link_n: %u, tu: %u\n",
intel_crtc_has_dp_encoder(pipe_config),
pipe_config->lane_count,
pipe_config->dp_m_n.gmch_m, pipe_config->dp_m_n.gmch_n,
pipe_config->dp_m_n.link_m, pipe_config->dp_m_n.link_n,
pipe_config->dp_m_n.tu);
DRM_DEBUG_KMS("dp: %i, lanes: %i, gmch_m2: %u, gmch_n2: %u, link_m2: %u, link_n2: %u, tu2: %u\n",
intel_crtc_has_dp_encoder(pipe_config),
pipe_config->lane_count,
pipe_config->dp_m2_n2.gmch_m,
pipe_config->dp_m2_n2.gmch_n,
pipe_config->dp_m2_n2.link_m,
pipe_config->dp_m2_n2.link_n,
pipe_config->dp_m2_n2.tu);
DRM_DEBUG_KMS("audio: %i, infoframes: %i\n",
pipe_config->has_audio,
pipe_config->has_infoframe);
DRM_DEBUG_KMS("requested mode:\n");
drm_mode_debug_printmodeline(&pipe_config->base.mode);
DRM_DEBUG_KMS("adjusted mode:\n");
drm_mode_debug_printmodeline(&pipe_config->base.adjusted_mode);
intel_dump_crtc_timings(&pipe_config->base.adjusted_mode);
DRM_DEBUG_KMS("port clock: %d\n", pipe_config->port_clock);
DRM_DEBUG_KMS("pipe src size: %dx%d\n",
pipe_config->pipe_src_w, pipe_config->pipe_src_h);
DRM_DEBUG_KMS("num_scalers: %d, scaler_users: 0x%x, scaler_id: %d\n",
crtc->num_scalers,
pipe_config->scaler_state.scaler_users,
pipe_config->scaler_state.scaler_id);
DRM_DEBUG_KMS("gmch pfit: control: 0x%08x, ratios: 0x%08x, lvds border: 0x%08x\n",
pipe_config->gmch_pfit.control,
pipe_config->gmch_pfit.pgm_ratios,
pipe_config->gmch_pfit.lvds_border_bits);
DRM_DEBUG_KMS("pch pfit: pos: 0x%08x, size: 0x%08x, %s\n",
pipe_config->pch_pfit.pos,
pipe_config->pch_pfit.size,
pipe_config->pch_pfit.enabled ? "enabled" : "disabled");
DRM_DEBUG_KMS("ips: %i\n", pipe_config->ips_enabled);
DRM_DEBUG_KMS("double wide: %i\n", pipe_config->double_wide);
if (IS_BROXTON(dev)) {
DRM_DEBUG_KMS("dpll_hw_state: ebb0: 0x%x, ebb4: 0x%x,"
"pll0: 0x%x, pll1: 0x%x, pll2: 0x%x, pll3: 0x%x, "
"pll6: 0x%x, pll8: 0x%x, pll9: 0x%x, pll10: 0x%x, pcsdw12: 0x%x\n",
pipe_config->dpll_hw_state.ebb0,
pipe_config->dpll_hw_state.ebb4,
pipe_config->dpll_hw_state.pll0,
pipe_config->dpll_hw_state.pll1,
pipe_config->dpll_hw_state.pll2,
pipe_config->dpll_hw_state.pll3,
pipe_config->dpll_hw_state.pll6,
pipe_config->dpll_hw_state.pll8,
pipe_config->dpll_hw_state.pll9,
pipe_config->dpll_hw_state.pll10,
pipe_config->dpll_hw_state.pcsdw12);
} else if (IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) {
DRM_DEBUG_KMS("dpll_hw_state: "
"ctrl1: 0x%x, cfgcr1: 0x%x, cfgcr2: 0x%x\n",
pipe_config->dpll_hw_state.ctrl1,
pipe_config->dpll_hw_state.cfgcr1,
pipe_config->dpll_hw_state.cfgcr2);
} else if (HAS_DDI(dev)) {
DRM_DEBUG_KMS("dpll_hw_state: wrpll: 0x%x spll: 0x%x\n",
pipe_config->dpll_hw_state.wrpll,
pipe_config->dpll_hw_state.spll);
} else {
DRM_DEBUG_KMS("dpll_hw_state: dpll: 0x%x, dpll_md: 0x%x, "
"fp0: 0x%x, fp1: 0x%x\n",
pipe_config->dpll_hw_state.dpll,
pipe_config->dpll_hw_state.dpll_md,
pipe_config->dpll_hw_state.fp0,
pipe_config->dpll_hw_state.fp1);
}
DRM_DEBUG_KMS("planes on this crtc\n");
list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
char *format_name;
intel_plane = to_intel_plane(plane);
if (intel_plane->pipe != crtc->pipe)
continue;
state = to_intel_plane_state(plane->state);
fb = state->base.fb;
if (!fb) {
DRM_DEBUG_KMS("[PLANE:%d:%s] disabled, scaler_id = %d\n",
plane->base.id, plane->name, state->scaler_id);
continue;
}
format_name = drm_get_format_name(fb->pixel_format);
DRM_DEBUG_KMS("[PLANE:%d:%s] enabled",
plane->base.id, plane->name);
DRM_DEBUG_KMS("\tFB:%d, fb = %ux%u format = %s",
fb->base.id, fb->width, fb->height, format_name);
DRM_DEBUG_KMS("\tscaler:%d src %dx%d+%d+%d dst %dx%d+%d+%d\n",
state->scaler_id,
state->base.src.x1 >> 16,
state->base.src.y1 >> 16,
drm_rect_width(&state->base.src) >> 16,
drm_rect_height(&state->base.src) >> 16,
state->base.dst.x1, state->base.dst.y1,
drm_rect_width(&state->base.dst),
drm_rect_height(&state->base.dst));
kfree(format_name);
}
}
static bool check_digital_port_conflicts(struct drm_atomic_state *state)
{
struct drm_device *dev = state->dev;
struct drm_connector *connector;
unsigned int used_ports = 0;
unsigned int used_mst_ports = 0;
/*
* Walk the connector list instead of the encoder
* list to detect the problem on ddi platforms
* where there's just one encoder per digital port.
*/
drm_for_each_connector(connector, dev) {
struct drm_connector_state *connector_state;
struct intel_encoder *encoder;
connector_state = drm_atomic_get_existing_connector_state(state, connector);
if (!connector_state)
connector_state = connector->state;
if (!connector_state->best_encoder)
continue;
encoder = to_intel_encoder(connector_state->best_encoder);
WARN_ON(!connector_state->crtc);
switch (encoder->type) {
unsigned int port_mask;
case INTEL_OUTPUT_UNKNOWN:
if (WARN_ON(!HAS_DDI(dev)))
break;
case INTEL_OUTPUT_DP:
case INTEL_OUTPUT_HDMI:
case INTEL_OUTPUT_EDP:
port_mask = 1 << enc_to_dig_port(&encoder->base)->port;
/* the same port mustn't appear more than once */
if (used_ports & port_mask)
return false;
used_ports |= port_mask;
break;
case INTEL_OUTPUT_DP_MST:
used_mst_ports |=
1 << enc_to_mst(&encoder->base)->primary->port;
break;
default:
break;
}
}
/* can't mix MST and SST/HDMI on the same port */
if (used_ports & used_mst_ports)
return false;
return true;
}
static void
clear_intel_crtc_state(struct intel_crtc_state *crtc_state)
{
struct drm_crtc_state tmp_state;
struct intel_crtc_scaler_state scaler_state;
struct intel_dpll_hw_state dpll_hw_state;
struct intel_shared_dpll *shared_dpll;
bool force_thru;
/* FIXME: before the switch to atomic started, a new pipe_config was
* kzalloc'd. Code that depends on any field being zero should be
* fixed, so that the crtc_state can be safely duplicated. For now,
* only fields that are know to not cause problems are preserved. */
tmp_state = crtc_state->base;
scaler_state = crtc_state->scaler_state;
shared_dpll = crtc_state->shared_dpll;
dpll_hw_state = crtc_state->dpll_hw_state;
force_thru = crtc_state->pch_pfit.force_thru;
memset(crtc_state, 0, sizeof *crtc_state);
crtc_state->base = tmp_state;
crtc_state->scaler_state = scaler_state;
crtc_state->shared_dpll = shared_dpll;
crtc_state->dpll_hw_state = dpll_hw_state;
crtc_state->pch_pfit.force_thru = force_thru;
}
static int
intel_modeset_pipe_config(struct drm_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_atomic_state *state = pipe_config->base.state;
struct intel_encoder *encoder;
struct drm_connector *connector;
struct drm_connector_state *connector_state;
int base_bpp, ret = -EINVAL;
int i;
bool retry = true;
clear_intel_crtc_state(pipe_config);
pipe_config->cpu_transcoder =
(enum transcoder) to_intel_crtc(crtc)->pipe;
/*
* Sanitize sync polarity flags based on requested ones. If neither
* positive or negative polarity is requested, treat this as meaning
* negative polarity.
*/
if (!(pipe_config->base.adjusted_mode.flags &
(DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NHSYNC)))
pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_NHSYNC;
if (!(pipe_config->base.adjusted_mode.flags &
(DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_NVSYNC)))
pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_NVSYNC;
base_bpp = compute_baseline_pipe_bpp(to_intel_crtc(crtc),
pipe_config);
if (base_bpp < 0)
goto fail;
/*
* Determine the real pipe dimensions. Note that stereo modes can
* increase the actual pipe size due to the frame doubling and
* insertion of additional space for blanks between the frame. This
* is stored in the crtc timings. We use the requested mode to do this
* computation to clearly distinguish it from the adjusted mode, which
* can be changed by the connectors in the below retry loop.
*/
drm_crtc_get_hv_timing(&pipe_config->base.mode,
&pipe_config->pipe_src_w,
&pipe_config->pipe_src_h);
for_each_connector_in_state(state, connector, connector_state, i) {
if (connector_state->crtc != crtc)
continue;
encoder = to_intel_encoder(connector_state->best_encoder);
if (!check_single_encoder_cloning(state, to_intel_crtc(crtc), encoder)) {
DRM_DEBUG_KMS("rejecting invalid cloning configuration\n");
goto fail;
}
/*
* Determine output_types before calling the .compute_config()
* hooks so that the hooks can use this information safely.
*/
pipe_config->output_types |= 1 << encoder->type;
}
encoder_retry:
/* Ensure the port clock defaults are reset when retrying. */
pipe_config->port_clock = 0;
pipe_config->pixel_multiplier = 1;
/* Fill in default crtc timings, allow encoders to overwrite them. */
drm_mode_set_crtcinfo(&pipe_config->base.adjusted_mode,
CRTC_STEREO_DOUBLE);
/* Pass our mode to the connectors and the CRTC to give them a chance to
* adjust it according to limitations or connector properties, and also
* a chance to reject the mode entirely.
*/
for_each_connector_in_state(state, connector, connector_state, i) {
if (connector_state->crtc != crtc)
continue;
encoder = to_intel_encoder(connector_state->best_encoder);
if (!(encoder->compute_config(encoder, pipe_config, connector_state))) {
DRM_DEBUG_KMS("Encoder config failure\n");
goto fail;
}
}
/* Set default port clock if not overwritten by the encoder. Needs to be
* done afterwards in case the encoder adjusts the mode. */
if (!pipe_config->port_clock)
pipe_config->port_clock = pipe_config->base.adjusted_mode.crtc_clock
* pipe_config->pixel_multiplier;
ret = intel_crtc_compute_config(to_intel_crtc(crtc), pipe_config);
if (ret < 0) {
DRM_DEBUG_KMS("CRTC fixup failed\n");
goto fail;
}
if (ret == RETRY) {
if (WARN(!retry, "loop in pipe configuration computation\n")) {
ret = -EINVAL;
goto fail;
}
DRM_DEBUG_KMS("CRTC bw constrained, retrying\n");
retry = false;
goto encoder_retry;
}
/* Dithering seems to not pass-through bits correctly when it should, so
* only enable it on 6bpc panels. */
pipe_config->dither = pipe_config->pipe_bpp == 6*3;
DRM_DEBUG_KMS("hw max bpp: %i, pipe bpp: %i, dithering: %i\n",
base_bpp, pipe_config->pipe_bpp, pipe_config->dither);
fail:
return ret;
}
static void
intel_modeset_update_crtc_state(struct drm_atomic_state *state)
{
struct drm_crtc *crtc;
struct drm_crtc_state *crtc_state;
int i;
/* Double check state. */
for_each_crtc_in_state(state, crtc, crtc_state, i) {
to_intel_crtc(crtc)->config = to_intel_crtc_state(crtc->state);
/* Update hwmode for vblank functions */
if (crtc->state->active)
crtc->hwmode = crtc->state->adjusted_mode;
else
crtc->hwmode.crtc_clock = 0;
/*
* Update legacy state to satisfy fbc code. This can
* be removed when fbc uses the atomic state.
*/
if (drm_atomic_get_existing_plane_state(state, crtc->primary)) {
struct drm_plane_state *plane_state = crtc->primary->state;
crtc->primary->fb = plane_state->fb;
crtc->x = plane_state->src_x >> 16;
crtc->y = plane_state->src_y >> 16;
}
}
}
static bool intel_fuzzy_clock_check(int clock1, int clock2)
{
int diff;
if (clock1 == clock2)
return true;
if (!clock1 || !clock2)
return false;
diff = abs(clock1 - clock2);
if (((((diff + clock1 + clock2) * 100)) / (clock1 + clock2)) < 105)
return true;
return false;
}
static bool
intel_compare_m_n(unsigned int m, unsigned int n,
unsigned int m2, unsigned int n2,
bool exact)
{
if (m == m2 && n == n2)
return true;
if (exact || !m || !n || !m2 || !n2)
return false;
BUILD_BUG_ON(DATA_LINK_M_N_MASK > INT_MAX);
if (n > n2) {
while (n > n2) {
m2 <<= 1;
n2 <<= 1;
}
} else if (n < n2) {
while (n < n2) {
m <<= 1;
n <<= 1;
}
}
if (n != n2)
return false;
return intel_fuzzy_clock_check(m, m2);
}
static bool
intel_compare_link_m_n(const struct intel_link_m_n *m_n,
struct intel_link_m_n *m2_n2,
bool adjust)
{
if (m_n->tu == m2_n2->tu &&
intel_compare_m_n(m_n->gmch_m, m_n->gmch_n,
m2_n2->gmch_m, m2_n2->gmch_n, !adjust) &&
intel_compare_m_n(m_n->link_m, m_n->link_n,
m2_n2->link_m, m2_n2->link_n, !adjust)) {
if (adjust)
*m2_n2 = *m_n;
return true;
}
return false;
}
static bool
intel_pipe_config_compare(struct drm_device *dev,
struct intel_crtc_state *current_config,
struct intel_crtc_state *pipe_config,
bool adjust)
{
bool ret = true;
#define INTEL_ERR_OR_DBG_KMS(fmt, ...) \
do { \
if (!adjust) \
DRM_ERROR(fmt, ##__VA_ARGS__); \
else \
DRM_DEBUG_KMS(fmt, ##__VA_ARGS__); \
} while (0)
#define PIPE_CONF_CHECK_X(name) \
if (current_config->name != pipe_config->name) { \
INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
"(expected 0x%08x, found 0x%08x)\n", \
current_config->name, \
pipe_config->name); \
ret = false; \
}
#define PIPE_CONF_CHECK_I(name) \
if (current_config->name != pipe_config->name) { \
INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
"(expected %i, found %i)\n", \
current_config->name, \
pipe_config->name); \
ret = false; \
}
#define PIPE_CONF_CHECK_P(name) \
if (current_config->name != pipe_config->name) { \
INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
"(expected %p, found %p)\n", \
current_config->name, \
pipe_config->name); \
ret = false; \
}
#define PIPE_CONF_CHECK_M_N(name) \
if (!intel_compare_link_m_n(&current_config->name, \
&pipe_config->name,\
adjust)) { \
INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
"(expected tu %i gmch %i/%i link %i/%i, " \
"found tu %i, gmch %i/%i link %i/%i)\n", \
current_config->name.tu, \
current_config->name.gmch_m, \
current_config->name.gmch_n, \
current_config->name.link_m, \
current_config->name.link_n, \
pipe_config->name.tu, \
pipe_config->name.gmch_m, \
pipe_config->name.gmch_n, \
pipe_config->name.link_m, \
pipe_config->name.link_n); \
ret = false; \
}
/* This is required for BDW+ where there is only one set of registers for
* switching between high and low RR.
* This macro can be used whenever a comparison has to be made between one
* hw state and multiple sw state variables.
*/
#define PIPE_CONF_CHECK_M_N_ALT(name, alt_name) \
if (!intel_compare_link_m_n(&current_config->name, \
&pipe_config->name, adjust) && \
!intel_compare_link_m_n(&current_config->alt_name, \
&pipe_config->name, adjust)) { \
INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
"(expected tu %i gmch %i/%i link %i/%i, " \
"or tu %i gmch %i/%i link %i/%i, " \
"found tu %i, gmch %i/%i link %i/%i)\n", \
current_config->name.tu, \
current_config->name.gmch_m, \
current_config->name.gmch_n, \
current_config->name.link_m, \
current_config->name.link_n, \
current_config->alt_name.tu, \
current_config->alt_name.gmch_m, \
current_config->alt_name.gmch_n, \
current_config->alt_name.link_m, \
current_config->alt_name.link_n, \
pipe_config->name.tu, \
pipe_config->name.gmch_m, \
pipe_config->name.gmch_n, \
pipe_config->name.link_m, \
pipe_config->name.link_n); \
ret = false; \
}
#define PIPE_CONF_CHECK_FLAGS(name, mask) \
if ((current_config->name ^ pipe_config->name) & (mask)) { \
INTEL_ERR_OR_DBG_KMS("mismatch in " #name "(" #mask ") " \
"(expected %i, found %i)\n", \
current_config->name & (mask), \
pipe_config->name & (mask)); \
ret = false; \
}
#define PIPE_CONF_CHECK_CLOCK_FUZZY(name) \
if (!intel_fuzzy_clock_check(current_config->name, pipe_config->name)) { \
INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
"(expected %i, found %i)\n", \
current_config->name, \
pipe_config->name); \
ret = false; \
}
#define PIPE_CONF_QUIRK(quirk) \
((current_config->quirks | pipe_config->quirks) & (quirk))
PIPE_CONF_CHECK_I(cpu_transcoder);
PIPE_CONF_CHECK_I(has_pch_encoder);
PIPE_CONF_CHECK_I(fdi_lanes);
PIPE_CONF_CHECK_M_N(fdi_m_n);
PIPE_CONF_CHECK_I(lane_count);
PIPE_CONF_CHECK_X(lane_lat_optim_mask);
if (INTEL_INFO(dev)->gen < 8) {
PIPE_CONF_CHECK_M_N(dp_m_n);
if (current_config->has_drrs)
PIPE_CONF_CHECK_M_N(dp_m2_n2);
} else
PIPE_CONF_CHECK_M_N_ALT(dp_m_n, dp_m2_n2);
PIPE_CONF_CHECK_X(output_types);
PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hdisplay);
PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_htotal);
PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hblank_start);
PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hblank_end);
PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hsync_start);
PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hsync_end);
PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vdisplay);
PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vtotal);
PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vblank_start);
PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vblank_end);
PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vsync_start);
PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vsync_end);
PIPE_CONF_CHECK_I(pixel_multiplier);
PIPE_CONF_CHECK_I(has_hdmi_sink);
if ((INTEL_INFO(dev)->gen < 8 && !IS_HASWELL(dev)) ||
IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev))
PIPE_CONF_CHECK_I(limited_color_range);
PIPE_CONF_CHECK_I(has_infoframe);
PIPE_CONF_CHECK_I(has_audio);
PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
DRM_MODE_FLAG_INTERLACE);
if (!PIPE_CONF_QUIRK(PIPE_CONFIG_QUIRK_MODE_SYNC_FLAGS)) {
PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
DRM_MODE_FLAG_PHSYNC);
PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
DRM_MODE_FLAG_NHSYNC);
PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
DRM_MODE_FLAG_PVSYNC);
PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
DRM_MODE_FLAG_NVSYNC);
}
PIPE_CONF_CHECK_X(gmch_pfit.control);
/* pfit ratios are autocomputed by the hw on gen4+ */
if (INTEL_INFO(dev)->gen < 4)
PIPE_CONF_CHECK_X(gmch_pfit.pgm_ratios);
PIPE_CONF_CHECK_X(gmch_pfit.lvds_border_bits);
if (!adjust) {
PIPE_CONF_CHECK_I(pipe_src_w);
PIPE_CONF_CHECK_I(pipe_src_h);
PIPE_CONF_CHECK_I(pch_pfit.enabled);
if (current_config->pch_pfit.enabled) {
PIPE_CONF_CHECK_X(pch_pfit.pos);
PIPE_CONF_CHECK_X(pch_pfit.size);
}
PIPE_CONF_CHECK_I(scaler_state.scaler_id);
}
/* BDW+ don't expose a synchronous way to read the state */
if (IS_HASWELL(dev))
PIPE_CONF_CHECK_I(ips_enabled);
PIPE_CONF_CHECK_I(double_wide);
PIPE_CONF_CHECK_P(shared_dpll);
PIPE_CONF_CHECK_X(dpll_hw_state.dpll);
PIPE_CONF_CHECK_X(dpll_hw_state.dpll_md);
PIPE_CONF_CHECK_X(dpll_hw_state.fp0);
PIPE_CONF_CHECK_X(dpll_hw_state.fp1);
PIPE_CONF_CHECK_X(dpll_hw_state.wrpll);
PIPE_CONF_CHECK_X(dpll_hw_state.spll);
PIPE_CONF_CHECK_X(dpll_hw_state.ctrl1);
PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr1);
PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr2);
PIPE_CONF_CHECK_X(dsi_pll.ctrl);
PIPE_CONF_CHECK_X(dsi_pll.div);
if (IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5)
PIPE_CONF_CHECK_I(pipe_bpp);
PIPE_CONF_CHECK_CLOCK_FUZZY(base.adjusted_mode.crtc_clock);
PIPE_CONF_CHECK_CLOCK_FUZZY(port_clock);
#undef PIPE_CONF_CHECK_X
#undef PIPE_CONF_CHECK_I
#undef PIPE_CONF_CHECK_P
#undef PIPE_CONF_CHECK_FLAGS
#undef PIPE_CONF_CHECK_CLOCK_FUZZY
#undef PIPE_CONF_QUIRK
#undef INTEL_ERR_OR_DBG_KMS
return ret;
}
static void intel_pipe_config_sanity_check(struct drm_i915_private *dev_priv,
const struct intel_crtc_state *pipe_config)
{
if (pipe_config->has_pch_encoder) {
int fdi_dotclock = intel_dotclock_calculate(intel_fdi_link_freq(dev_priv, pipe_config),
&pipe_config->fdi_m_n);
int dotclock = pipe_config->base.adjusted_mode.crtc_clock;
/*
* FDI already provided one idea for the dotclock.
* Yell if the encoder disagrees.
*/
WARN(!intel_fuzzy_clock_check(fdi_dotclock, dotclock),
"FDI dotclock and encoder dotclock mismatch, fdi: %i, encoder: %i\n",
fdi_dotclock, dotclock);
}
}
static void verify_wm_state(struct drm_crtc *crtc,
struct drm_crtc_state *new_state)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct skl_ddb_allocation hw_ddb, *sw_ddb;
struct skl_ddb_entry *hw_entry, *sw_entry;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
const enum pipe pipe = intel_crtc->pipe;
int plane;
if (INTEL_INFO(dev)->gen < 9 || !new_state->active)
return;
skl_ddb_get_hw_state(dev_priv, &hw_ddb);
sw_ddb = &dev_priv->wm.skl_hw.ddb;
/* planes */
for_each_plane(dev_priv, pipe, plane) {
hw_entry = &hw_ddb.plane[pipe][plane];
sw_entry = &sw_ddb->plane[pipe][plane];
if (skl_ddb_entry_equal(hw_entry, sw_entry))
continue;
DRM_ERROR("mismatch in DDB state pipe %c plane %d "
"(expected (%u,%u), found (%u,%u))\n",
pipe_name(pipe), plane + 1,
sw_entry->start, sw_entry->end,
hw_entry->start, hw_entry->end);
}
/*
* cursor
* If the cursor plane isn't active, we may not have updated it's ddb
* allocation. In that case since the ddb allocation will be updated
* once the plane becomes visible, we can skip this check
*/
if (intel_crtc->cursor_addr) {
hw_entry = &hw_ddb.plane[pipe][PLANE_CURSOR];
sw_entry = &sw_ddb->plane[pipe][PLANE_CURSOR];
if (!skl_ddb_entry_equal(hw_entry, sw_entry)) {
DRM_ERROR("mismatch in DDB state pipe %c cursor "
"(expected (%u,%u), found (%u,%u))\n",
pipe_name(pipe),
sw_entry->start, sw_entry->end,
hw_entry->start, hw_entry->end);
}
}
}
static void
verify_connector_state(struct drm_device *dev, struct drm_crtc *crtc)
{
struct drm_connector *connector;
drm_for_each_connector(connector, dev) {
struct drm_encoder *encoder = connector->encoder;
struct drm_connector_state *state = connector->state;
if (state->crtc != crtc)
continue;
intel_connector_verify_state(to_intel_connector(connector));
I915_STATE_WARN(state->best_encoder != encoder,
"connector's atomic encoder doesn't match legacy encoder\n");
}
}
static void
verify_encoder_state(struct drm_device *dev)
{
struct intel_encoder *encoder;
struct intel_connector *connector;
for_each_intel_encoder(dev, encoder) {
bool enabled = false;
enum pipe pipe;
DRM_DEBUG_KMS("[ENCODER:%d:%s]\n",
encoder->base.base.id,
encoder->base.name);
for_each_intel_connector(dev, connector) {
if (connector->base.state->best_encoder != &encoder->base)
continue;
enabled = true;
I915_STATE_WARN(connector->base.state->crtc !=
encoder->base.crtc,
"connector's crtc doesn't match encoder crtc\n");
}
I915_STATE_WARN(!!encoder->base.crtc != enabled,
"encoder's enabled state mismatch "
"(expected %i, found %i)\n",
!!encoder->base.crtc, enabled);
if (!encoder->base.crtc) {
bool active;
active = encoder->get_hw_state(encoder, &pipe);
I915_STATE_WARN(active,
"encoder detached but still enabled on pipe %c.\n",
pipe_name(pipe));
}
}
}
static void
verify_crtc_state(struct drm_crtc *crtc,
struct drm_crtc_state *old_crtc_state,
struct drm_crtc_state *new_crtc_state)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_encoder *encoder;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_crtc_state *pipe_config, *sw_config;
struct drm_atomic_state *old_state;
bool active;
old_state = old_crtc_state->state;
__drm_atomic_helper_crtc_destroy_state(old_crtc_state);
pipe_config = to_intel_crtc_state(old_crtc_state);
memset(pipe_config, 0, sizeof(*pipe_config));
pipe_config->base.crtc = crtc;
pipe_config->base.state = old_state;
DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name);
active = dev_priv->display.get_pipe_config(intel_crtc, pipe_config);
/* hw state is inconsistent with the pipe quirk */
if ((intel_crtc->pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
(intel_crtc->pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
active = new_crtc_state->active;
I915_STATE_WARN(new_crtc_state->active != active,
"crtc active state doesn't match with hw state "
"(expected %i, found %i)\n", new_crtc_state->active, active);
I915_STATE_WARN(intel_crtc->active != new_crtc_state->active,
"transitional active state does not match atomic hw state "
"(expected %i, found %i)\n", new_crtc_state->active, intel_crtc->active);
for_each_encoder_on_crtc(dev, crtc, encoder) {
enum pipe pipe;
active = encoder->get_hw_state(encoder, &pipe);
I915_STATE_WARN(active != new_crtc_state->active,
"[ENCODER:%i] active %i with crtc active %i\n",
encoder->base.base.id, active, new_crtc_state->active);
I915_STATE_WARN(active && intel_crtc->pipe != pipe,
"Encoder connected to wrong pipe %c\n",
pipe_name(pipe));
if (active) {
pipe_config->output_types |= 1 << encoder->type;
encoder->get_config(encoder, pipe_config);
}
}
if (!new_crtc_state->active)
return;
intel_pipe_config_sanity_check(dev_priv, pipe_config);
sw_config = to_intel_crtc_state(crtc->state);
if (!intel_pipe_config_compare(dev, sw_config,
pipe_config, false)) {
I915_STATE_WARN(1, "pipe state doesn't match!\n");
intel_dump_pipe_config(intel_crtc, pipe_config,
"[hw state]");
intel_dump_pipe_config(intel_crtc, sw_config,
"[sw state]");
}
}
static void
verify_single_dpll_state(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll,
struct drm_crtc *crtc,
struct drm_crtc_state *new_state)
{
struct intel_dpll_hw_state dpll_hw_state;
unsigned crtc_mask;
bool active;
memset(&dpll_hw_state, 0, sizeof(dpll_hw_state));
DRM_DEBUG_KMS("%s\n", pll->name);
active = pll->funcs.get_hw_state(dev_priv, pll, &dpll_hw_state);
if (!(pll->flags & INTEL_DPLL_ALWAYS_ON)) {
I915_STATE_WARN(!pll->on && pll->active_mask,
"pll in active use but not on in sw tracking\n");
I915_STATE_WARN(pll->on && !pll->active_mask,
"pll is on but not used by any active crtc\n");
I915_STATE_WARN(pll->on != active,
"pll on state mismatch (expected %i, found %i)\n",
pll->on, active);
}
if (!crtc) {
I915_STATE_WARN(pll->active_mask & ~pll->config.crtc_mask,
"more active pll users than references: %x vs %x\n",
pll->active_mask, pll->config.crtc_mask);
return;
}
crtc_mask = 1 << drm_crtc_index(crtc);
if (new_state->active)
I915_STATE_WARN(!(pll->active_mask & crtc_mask),
"pll active mismatch (expected pipe %c in active mask 0x%02x)\n",
pipe_name(drm_crtc_index(crtc)), pll->active_mask);
else
I915_STATE_WARN(pll->active_mask & crtc_mask,
"pll active mismatch (didn't expect pipe %c in active mask 0x%02x)\n",
pipe_name(drm_crtc_index(crtc)), pll->active_mask);
I915_STATE_WARN(!(pll->config.crtc_mask & crtc_mask),
"pll enabled crtcs mismatch (expected 0x%x in 0x%02x)\n",
crtc_mask, pll->config.crtc_mask);
I915_STATE_WARN(pll->on && memcmp(&pll->config.hw_state,
&dpll_hw_state,
sizeof(dpll_hw_state)),
"pll hw state mismatch\n");
}
static void
verify_shared_dpll_state(struct drm_device *dev, struct drm_crtc *crtc,
struct drm_crtc_state *old_crtc_state,
struct drm_crtc_state *new_crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc_state *old_state = to_intel_crtc_state(old_crtc_state);
struct intel_crtc_state *new_state = to_intel_crtc_state(new_crtc_state);
if (new_state->shared_dpll)
verify_single_dpll_state(dev_priv, new_state->shared_dpll, crtc, new_crtc_state);
if (old_state->shared_dpll &&
old_state->shared_dpll != new_state->shared_dpll) {
unsigned crtc_mask = 1 << drm_crtc_index(crtc);
struct intel_shared_dpll *pll = old_state->shared_dpll;
I915_STATE_WARN(pll->active_mask & crtc_mask,
"pll active mismatch (didn't expect pipe %c in active mask)\n",
pipe_name(drm_crtc_index(crtc)));
I915_STATE_WARN(pll->config.crtc_mask & crtc_mask,
"pll enabled crtcs mismatch (found %x in enabled mask)\n",
pipe_name(drm_crtc_index(crtc)));
}
}
static void
intel_modeset_verify_crtc(struct drm_crtc *crtc,
struct drm_crtc_state *old_state,
struct drm_crtc_state *new_state)
{
if (!needs_modeset(new_state) &&
!to_intel_crtc_state(new_state)->update_pipe)
return;
verify_wm_state(crtc, new_state);
verify_connector_state(crtc->dev, crtc);
verify_crtc_state(crtc, old_state, new_state);
verify_shared_dpll_state(crtc->dev, crtc, old_state, new_state);
}
static void
verify_disabled_dpll_state(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
int i;
for (i = 0; i < dev_priv->num_shared_dpll; i++)
verify_single_dpll_state(dev_priv, &dev_priv->shared_dplls[i], NULL, NULL);
}
static void
intel_modeset_verify_disabled(struct drm_device *dev)
{
verify_encoder_state(dev);
verify_connector_state(dev, NULL);
verify_disabled_dpll_state(dev);
}
static void update_scanline_offset(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
/*
* The scanline counter increments at the leading edge of hsync.
*
* On most platforms it starts counting from vtotal-1 on the
* first active line. That means the scanline counter value is
* always one less than what we would expect. Ie. just after
* start of vblank, which also occurs at start of hsync (on the
* last active line), the scanline counter will read vblank_start-1.
*
* On gen2 the scanline counter starts counting from 1 instead
* of vtotal-1, so we have to subtract one (or rather add vtotal-1
* to keep the value positive), instead of adding one.
*
* On HSW+ the behaviour of the scanline counter depends on the output
* type. For DP ports it behaves like most other platforms, but on HDMI
* there's an extra 1 line difference. So we need to add two instead of
* one to the value.
*/
if (IS_GEN2(dev)) {
const struct drm_display_mode *adjusted_mode = &crtc->config->base.adjusted_mode;
int vtotal;
vtotal = adjusted_mode->crtc_vtotal;
if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)
vtotal /= 2;
crtc->scanline_offset = vtotal - 1;
} else if (HAS_DDI(dev) &&
intel_crtc_has_type(crtc->config, INTEL_OUTPUT_HDMI)) {
crtc->scanline_offset = 2;
} else
crtc->scanline_offset = 1;
}
static void intel_modeset_clear_plls(struct drm_atomic_state *state)
{
struct drm_device *dev = state->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_shared_dpll_config *shared_dpll = NULL;
struct drm_crtc *crtc;
struct drm_crtc_state *crtc_state;
int i;
if (!dev_priv->display.crtc_compute_clock)
return;
for_each_crtc_in_state(state, crtc, crtc_state, i) {
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_shared_dpll *old_dpll =
to_intel_crtc_state(crtc->state)->shared_dpll;
if (!needs_modeset(crtc_state))
continue;
to_intel_crtc_state(crtc_state)->shared_dpll = NULL;
if (!old_dpll)
continue;
if (!shared_dpll)
shared_dpll = intel_atomic_get_shared_dpll_state(state);
intel_shared_dpll_config_put(shared_dpll, old_dpll, intel_crtc);
}
}
/*
* This implements the workaround described in the "notes" section of the mode
* set sequence documentation. When going from no pipes or single pipe to
* multiple pipes, and planes are enabled after the pipe, we need to wait at
* least 2 vblanks on the first pipe before enabling planes on the second pipe.
*/
static int haswell_mode_set_planes_workaround(struct drm_atomic_state *state)
{
struct drm_crtc_state *crtc_state;
struct intel_crtc *intel_crtc;
struct drm_crtc *crtc;
struct intel_crtc_state *first_crtc_state = NULL;
struct intel_crtc_state *other_crtc_state = NULL;
enum pipe first_pipe = INVALID_PIPE, enabled_pipe = INVALID_PIPE;
int i;
/* look at all crtc's that are going to be enabled in during modeset */
for_each_crtc_in_state(state, crtc, crtc_state, i) {
intel_crtc = to_intel_crtc(crtc);
if (!crtc_state->active || !needs_modeset(crtc_state))
continue;
if (first_crtc_state) {
other_crtc_state = to_intel_crtc_state(crtc_state);
break;
} else {
first_crtc_state = to_intel_crtc_state(crtc_state);
first_pipe = intel_crtc->pipe;
}
}
/* No workaround needed? */
if (!first_crtc_state)
return 0;
/* w/a possibly needed, check how many crtc's are already enabled. */
for_each_intel_crtc(state->dev, intel_crtc) {
struct intel_crtc_state *pipe_config;
pipe_config = intel_atomic_get_crtc_state(state, intel_crtc);
if (IS_ERR(pipe_config))
return PTR_ERR(pipe_config);
pipe_config->hsw_workaround_pipe = INVALID_PIPE;
if (!pipe_config->base.active ||
needs_modeset(&pipe_config->base))
continue;
/* 2 or more enabled crtcs means no need for w/a */
if (enabled_pipe != INVALID_PIPE)
return 0;
enabled_pipe = intel_crtc->pipe;
}
if (enabled_pipe != INVALID_PIPE)
first_crtc_state->hsw_workaround_pipe = enabled_pipe;
else if (other_crtc_state)
other_crtc_state->hsw_workaround_pipe = first_pipe;
return 0;
}
static int intel_modeset_all_pipes(struct drm_atomic_state *state)
{
struct drm_crtc *crtc;
struct drm_crtc_state *crtc_state;
int ret = 0;
/* add all active pipes to the state */
for_each_crtc(state->dev, crtc) {
crtc_state = drm_atomic_get_crtc_state(state, crtc);
if (IS_ERR(crtc_state))
return PTR_ERR(crtc_state);
if (!crtc_state->active || needs_modeset(crtc_state))
continue;
crtc_state->mode_changed = true;
ret = drm_atomic_add_affected_connectors(state, crtc);
if (ret)
break;
ret = drm_atomic_add_affected_planes(state, crtc);
if (ret)
break;
}
return ret;
}
static int intel_modeset_checks(struct drm_atomic_state *state)
{
struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
struct drm_i915_private *dev_priv = to_i915(state->dev);
struct drm_crtc *crtc;
struct drm_crtc_state *crtc_state;
int ret = 0, i;
if (!check_digital_port_conflicts(state)) {
DRM_DEBUG_KMS("rejecting conflicting digital port configuration\n");
return -EINVAL;
}
intel_state->modeset = true;
intel_state->active_crtcs = dev_priv->active_crtcs;
for_each_crtc_in_state(state, crtc, crtc_state, i) {
if (crtc_state->active)
intel_state->active_crtcs |= 1 << i;
else
intel_state->active_crtcs &= ~(1 << i);
if (crtc_state->active != crtc->state->active)
intel_state->active_pipe_changes |= drm_crtc_mask(crtc);
}
/*
* See if the config requires any additional preparation, e.g.
* to adjust global state with pipes off. We need to do this
* here so we can get the modeset_pipe updated config for the new
* mode set on this crtc. For other crtcs we need to use the
* adjusted_mode bits in the crtc directly.
*/
if (dev_priv->display.modeset_calc_cdclk) {
if (!intel_state->cdclk_pll_vco)
intel_state->cdclk_pll_vco = dev_priv->cdclk_pll.vco;
if (!intel_state->cdclk_pll_vco)
intel_state->cdclk_pll_vco = dev_priv->skl_preferred_vco_freq;
ret = dev_priv->display.modeset_calc_cdclk(state);
if (ret < 0)
return ret;
if (intel_state->dev_cdclk != dev_priv->cdclk_freq ||
intel_state->cdclk_pll_vco != dev_priv->cdclk_pll.vco)
ret = intel_modeset_all_pipes(state);
if (ret < 0)
return ret;
DRM_DEBUG_KMS("New cdclk calculated to be atomic %u, actual %u\n",
intel_state->cdclk, intel_state->dev_cdclk);
} else
to_intel_atomic_state(state)->cdclk = dev_priv->atomic_cdclk_freq;
intel_modeset_clear_plls(state);
if (IS_HASWELL(dev_priv))
return haswell_mode_set_planes_workaround(state);
return 0;
}
/*
* Handle calculation of various watermark data at the end of the atomic check
* phase. The code here should be run after the per-crtc and per-plane 'check'
* handlers to ensure that all derived state has been updated.
*/
static int calc_watermark_data(struct drm_atomic_state *state)
{
struct drm_device *dev = state->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
/* Is there platform-specific watermark information to calculate? */
if (dev_priv->display.compute_global_watermarks)
return dev_priv->display.compute_global_watermarks(state);
return 0;
}
/**
* intel_atomic_check - validate state object
* @dev: drm device
* @state: state to validate
*/
static int intel_atomic_check(struct drm_device *dev,
struct drm_atomic_state *state)
{
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
struct drm_crtc *crtc;
struct drm_crtc_state *crtc_state;
int ret, i;
bool any_ms = false;
ret = drm_atomic_helper_check_modeset(dev, state);
if (ret)
return ret;
for_each_crtc_in_state(state, crtc, crtc_state, i) {
struct intel_crtc_state *pipe_config =
to_intel_crtc_state(crtc_state);
/* Catch I915_MODE_FLAG_INHERITED */
if (crtc_state->mode.private_flags != crtc->state->mode.private_flags)
crtc_state->mode_changed = true;
if (!needs_modeset(crtc_state))
continue;
if (!crtc_state->enable) {
any_ms = true;
continue;
}
/* FIXME: For only active_changed we shouldn't need to do any
* state recomputation at all. */
ret = drm_atomic_add_affected_connectors(state, crtc);
if (ret)
return ret;
ret = intel_modeset_pipe_config(crtc, pipe_config);
if (ret) {
intel_dump_pipe_config(to_intel_crtc(crtc),
pipe_config, "[failed]");
return ret;
}
if (i915.fastboot &&
intel_pipe_config_compare(dev,
to_intel_crtc_state(crtc->state),
pipe_config, true)) {
crtc_state->mode_changed = false;
to_intel_crtc_state(crtc_state)->update_pipe = true;
}
if (needs_modeset(crtc_state))
any_ms = true;
ret = drm_atomic_add_affected_planes(state, crtc);
if (ret)
return ret;
intel_dump_pipe_config(to_intel_crtc(crtc), pipe_config,
needs_modeset(crtc_state) ?
"[modeset]" : "[fastset]");
}
if (any_ms) {
ret = intel_modeset_checks(state);
if (ret)
return ret;
} else
intel_state->cdclk = dev_priv->cdclk_freq;
ret = drm_atomic_helper_check_planes(dev, state);
if (ret)
return ret;
intel_fbc_choose_crtc(dev_priv, state);
return calc_watermark_data(state);
}
static int intel_atomic_prepare_commit(struct drm_device *dev,
struct drm_atomic_state *state,
bool nonblock)
{
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_plane_state *plane_state;
struct drm_crtc_state *crtc_state;
struct drm_plane *plane;
struct drm_crtc *crtc;
int i, ret;
for_each_crtc_in_state(state, crtc, crtc_state, i) {
if (state->legacy_cursor_update)
continue;
ret = intel_crtc_wait_for_pending_flips(crtc);
if (ret)
return ret;
if (atomic_read(&to_intel_crtc(crtc)->unpin_work_count) >= 2)
flush_workqueue(dev_priv->wq);
}
ret = mutex_lock_interruptible(&dev->struct_mutex);
if (ret)
return ret;
ret = drm_atomic_helper_prepare_planes(dev, state);
mutex_unlock(&dev->struct_mutex);
if (!ret && !nonblock) {
for_each_plane_in_state(state, plane, plane_state, i) {
struct intel_plane_state *intel_plane_state =
to_intel_plane_state(plane_state);
if (!intel_plane_state->wait_req)
continue;
ret = i915_wait_request(intel_plane_state->wait_req,
I915_WAIT_INTERRUPTIBLE,
NULL, NULL);
if (ret) {
/* Any hang should be swallowed by the wait */
WARN_ON(ret == -EIO);
mutex_lock(&dev->struct_mutex);
drm_atomic_helper_cleanup_planes(dev, state);
mutex_unlock(&dev->struct_mutex);
break;
}
}
}
return ret;
}
u32 intel_crtc_get_vblank_counter(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
if (!dev->max_vblank_count)
return drm_accurate_vblank_count(&crtc->base);
return dev->driver->get_vblank_counter(dev, crtc->pipe);
}
static void intel_atomic_wait_for_vblanks(struct drm_device *dev,
struct drm_i915_private *dev_priv,
unsigned crtc_mask)
{
unsigned last_vblank_count[I915_MAX_PIPES];
enum pipe pipe;
int ret;
if (!crtc_mask)
return;
for_each_pipe(dev_priv, pipe) {
struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
if (!((1 << pipe) & crtc_mask))
continue;
ret = drm_crtc_vblank_get(crtc);
if (WARN_ON(ret != 0)) {
crtc_mask &= ~(1 << pipe);
continue;
}
last_vblank_count[pipe] = drm_crtc_vblank_count(crtc);
}
for_each_pipe(dev_priv, pipe) {
struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
long lret;
if (!((1 << pipe) & crtc_mask))
continue;
lret = wait_event_timeout(dev->vblank[pipe].queue,
last_vblank_count[pipe] !=
drm_crtc_vblank_count(crtc),
msecs_to_jiffies(50));
WARN(!lret, "pipe %c vblank wait timed out\n", pipe_name(pipe));
drm_crtc_vblank_put(crtc);
}
}
static bool needs_vblank_wait(struct intel_crtc_state *crtc_state)
{
/* fb updated, need to unpin old fb */
if (crtc_state->fb_changed)
return true;
/* wm changes, need vblank before final wm's */
if (crtc_state->update_wm_post)
return true;
/*
* cxsr is re-enabled after vblank.
* This is already handled by crtc_state->update_wm_post,
* but added for clarity.
*/
if (crtc_state->disable_cxsr)
return true;
return false;
}
static void intel_update_crtc(struct drm_crtc *crtc,
struct drm_atomic_state *state,
struct drm_crtc_state *old_crtc_state,
unsigned int *crtc_vblank_mask)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_crtc_state *pipe_config = to_intel_crtc_state(crtc->state);
bool modeset = needs_modeset(crtc->state);
if (modeset) {
update_scanline_offset(intel_crtc);
dev_priv->display.crtc_enable(pipe_config, state);
} else {
intel_pre_plane_update(to_intel_crtc_state(old_crtc_state));
}
if (drm_atomic_get_existing_plane_state(state, crtc->primary)) {
intel_fbc_enable(
intel_crtc, pipe_config,
to_intel_plane_state(crtc->primary->state));
}
drm_atomic_helper_commit_planes_on_crtc(old_crtc_state);
if (needs_vblank_wait(pipe_config))
*crtc_vblank_mask |= drm_crtc_mask(crtc);
}
static void intel_update_crtcs(struct drm_atomic_state *state,
unsigned int *crtc_vblank_mask)
{
struct drm_crtc *crtc;
struct drm_crtc_state *old_crtc_state;
int i;
for_each_crtc_in_state(state, crtc, old_crtc_state, i) {
if (!crtc->state->active)
continue;
intel_update_crtc(crtc, state, old_crtc_state,
crtc_vblank_mask);
}
}
static void skl_update_crtcs(struct drm_atomic_state *state,
unsigned int *crtc_vblank_mask)
{
struct drm_device *dev = state->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
struct drm_crtc *crtc;
struct drm_crtc_state *old_crtc_state;
struct skl_ddb_allocation *new_ddb = &intel_state->wm_results.ddb;
struct skl_ddb_allocation *cur_ddb = &dev_priv->wm.skl_hw.ddb;
unsigned int updated = 0;
bool progress;
enum pipe pipe;
/*
* Whenever the number of active pipes changes, we need to make sure we
* update the pipes in the right order so that their ddb allocations
* never overlap with eachother inbetween CRTC updates. Otherwise we'll
* cause pipe underruns and other bad stuff.
*/
do {
int i;
progress = false;
for_each_crtc_in_state(state, crtc, old_crtc_state, i) {
bool vbl_wait = false;
unsigned int cmask = drm_crtc_mask(crtc);
pipe = to_intel_crtc(crtc)->pipe;
if (updated & cmask || !crtc->state->active)
continue;
if (skl_ddb_allocation_overlaps(state, cur_ddb, new_ddb,
pipe))
continue;
updated |= cmask;
/*
* If this is an already active pipe, it's DDB changed,
* and this isn't the last pipe that needs updating
* then we need to wait for a vblank to pass for the
* new ddb allocation to take effect.
*/
if (!skl_ddb_allocation_equals(cur_ddb, new_ddb, pipe) &&
!crtc->state->active_changed &&
intel_state->wm_results.dirty_pipes != updated)
vbl_wait = true;
intel_update_crtc(crtc, state, old_crtc_state,
crtc_vblank_mask);
if (vbl_wait)
intel_wait_for_vblank(dev, pipe);
progress = true;
}
} while (progress);
}
static void intel_atomic_commit_tail(struct drm_atomic_state *state)
{
struct drm_device *dev = state->dev;
struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_crtc_state *old_crtc_state;
struct drm_crtc *crtc;
struct intel_crtc_state *intel_cstate;
struct drm_plane *plane;
struct drm_plane_state *plane_state;
bool hw_check = intel_state->modeset;
unsigned long put_domains[I915_MAX_PIPES] = {};
unsigned crtc_vblank_mask = 0;
int i, ret;
for_each_plane_in_state(state, plane, plane_state, i) {
struct intel_plane_state *intel_plane_state =
to_intel_plane_state(plane_state);
if (!intel_plane_state->wait_req)
continue;
ret = i915_wait_request(intel_plane_state->wait_req,
0, NULL, NULL);
/* EIO should be eaten, and we can't get interrupted in the
* worker, and blocking commits have waited already. */
WARN_ON(ret);
}
drm_atomic_helper_wait_for_dependencies(state);
if (intel_state->modeset) {
memcpy(dev_priv->min_pixclk, intel_state->min_pixclk,
sizeof(intel_state->min_pixclk));
dev_priv->active_crtcs = intel_state->active_crtcs;
dev_priv->atomic_cdclk_freq = intel_state->cdclk;
intel_display_power_get(dev_priv, POWER_DOMAIN_MODESET);
}
for_each_crtc_in_state(state, crtc, old_crtc_state, i) {
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
if (needs_modeset(crtc->state) ||
to_intel_crtc_state(crtc->state)->update_pipe) {
hw_check = true;
put_domains[to_intel_crtc(crtc)->pipe] =
modeset_get_crtc_power_domains(crtc,
to_intel_crtc_state(crtc->state));
}
if (!needs_modeset(crtc->state))
continue;
intel_pre_plane_update(to_intel_crtc_state(old_crtc_state));
if (old_crtc_state->active) {
intel_crtc_disable_planes(crtc, old_crtc_state->plane_mask);
dev_priv->display.crtc_disable(to_intel_crtc_state(old_crtc_state), state);
intel_crtc->active = false;
intel_fbc_disable(intel_crtc);
intel_disable_shared_dpll(intel_crtc);
/*
* Underruns don't always raise
* interrupts, so check manually.
*/
intel_check_cpu_fifo_underruns(dev_priv);
intel_check_pch_fifo_underruns(dev_priv);
if (!crtc->state->active)
intel_update_watermarks(crtc);
}
}
/* Only after disabling all output pipelines that will be changed can we
* update the the output configuration. */
intel_modeset_update_crtc_state(state);
if (intel_state->modeset) {
drm_atomic_helper_update_legacy_modeset_state(state->dev, state);
if (dev_priv->display.modeset_commit_cdclk &&
(intel_state->dev_cdclk != dev_priv->cdclk_freq ||
intel_state->cdclk_pll_vco != dev_priv->cdclk_pll.vco))
dev_priv->display.modeset_commit_cdclk(state);
/*
* SKL workaround: bspec recommends we disable the SAGV when we
* have more then one pipe enabled
*/
if (!intel_can_enable_sagv(state))
intel_disable_sagv(dev_priv);
intel_modeset_verify_disabled(dev);
}
/* Complete the events for pipes that have now been disabled */
for_each_crtc_in_state(state, crtc, old_crtc_state, i) {
bool modeset = needs_modeset(crtc->state);
/* Complete events for now disable pipes here. */
if (modeset && !crtc->state->active && crtc->state->event) {
spin_lock_irq(&dev->event_lock);
drm_crtc_send_vblank_event(crtc, crtc->state->event);
spin_unlock_irq(&dev->event_lock);
crtc->state->event = NULL;
}
}
/* Now enable the clocks, plane, pipe, and connectors that we set up. */
dev_priv->display.update_crtcs(state, &crtc_vblank_mask);
/* FIXME: We should call drm_atomic_helper_commit_hw_done() here
* already, but still need the state for the delayed optimization. To
* fix this:
* - wrap the optimization/post_plane_update stuff into a per-crtc work.
* - schedule that vblank worker _before_ calling hw_done
* - at the start of commit_tail, cancel it _synchrously
* - switch over to the vblank wait helper in the core after that since
* we don't need out special handling any more.
*/
if (!state->legacy_cursor_update)
intel_atomic_wait_for_vblanks(dev, dev_priv, crtc_vblank_mask);
/*
* Now that the vblank has passed, we can go ahead and program the
* optimal watermarks on platforms that need two-step watermark
* programming.
*
* TODO: Move this (and other cleanup) to an async worker eventually.
*/
for_each_crtc_in_state(state, crtc, old_crtc_state, i) {
intel_cstate = to_intel_crtc_state(crtc->state);
if (dev_priv->display.optimize_watermarks)
dev_priv->display.optimize_watermarks(intel_cstate);
}
for_each_crtc_in_state(state, crtc, old_crtc_state, i) {
intel_post_plane_update(to_intel_crtc_state(old_crtc_state));
if (put_domains[i])
modeset_put_power_domains(dev_priv, put_domains[i]);
intel_modeset_verify_crtc(crtc, old_crtc_state, crtc->state);
}
if (intel_state->modeset && intel_can_enable_sagv(state))
intel_enable_sagv(dev_priv);
drm_atomic_helper_commit_hw_done(state);
if (intel_state->modeset)
intel_display_power_put(dev_priv, POWER_DOMAIN_MODESET);
mutex_lock(&dev->struct_mutex);
drm_atomic_helper_cleanup_planes(dev, state);
mutex_unlock(&dev->struct_mutex);
drm_atomic_helper_commit_cleanup_done(state);
drm_atomic_state_free(state);
/* As one of the primary mmio accessors, KMS has a high likelihood
* of triggering bugs in unclaimed access. After we finish
* modesetting, see if an error has been flagged, and if so
* enable debugging for the next modeset - and hope we catch
* the culprit.
*
* XXX note that we assume display power is on at this point.
* This might hold true now but we need to add pm helper to check
* unclaimed only when the hardware is on, as atomic commits
* can happen also when the device is completely off.
*/
intel_uncore_arm_unclaimed_mmio_detection(dev_priv);
}
static void intel_atomic_commit_work(struct work_struct *work)
{
struct drm_atomic_state *state = container_of(work,
struct drm_atomic_state,
commit_work);
intel_atomic_commit_tail(state);
}
static void intel_atomic_track_fbs(struct drm_atomic_state *state)
{
struct drm_plane_state *old_plane_state;
struct drm_plane *plane;
int i;
for_each_plane_in_state(state, plane, old_plane_state, i)
i915_gem_track_fb(intel_fb_obj(old_plane_state->fb),
intel_fb_obj(plane->state->fb),
to_intel_plane(plane)->frontbuffer_bit);
}
/**
* intel_atomic_commit - commit validated state object
* @dev: DRM device
* @state: the top-level driver state object
* @nonblock: nonblocking commit
*
* This function commits a top-level state object that has been validated
* with drm_atomic_helper_check().
*
* FIXME: Atomic modeset support for i915 is not yet complete. At the moment
* nonblocking commits are only safe for pure plane updates. Everything else
* should work though.
*
* RETURNS
* Zero for success or -errno.
*/
static int intel_atomic_commit(struct drm_device *dev,
struct drm_atomic_state *state,
bool nonblock)
{
struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
struct drm_i915_private *dev_priv = to_i915(dev);
int ret = 0;
if (intel_state->modeset && nonblock) {
DRM_DEBUG_KMS("nonblocking commit for modeset not yet implemented.\n");
return -EINVAL;
}
ret = drm_atomic_helper_setup_commit(state, nonblock);
if (ret)
return ret;
INIT_WORK(&state->commit_work, intel_atomic_commit_work);
ret = intel_atomic_prepare_commit(dev, state, nonblock);
if (ret) {
DRM_DEBUG_ATOMIC("Preparing state failed with %i\n", ret);
return ret;
}
drm_atomic_helper_swap_state(state, true);
dev_priv->wm.distrust_bios_wm = false;
dev_priv->wm.skl_results = intel_state->wm_results;
intel_shared_dpll_commit(state);
intel_atomic_track_fbs(state);
if (nonblock)
queue_work(system_unbound_wq, &state->commit_work);
else
intel_atomic_commit_tail(state);
return 0;
}
void intel_crtc_restore_mode(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_atomic_state *state;
struct drm_crtc_state *crtc_state;
int ret;
state = drm_atomic_state_alloc(dev);
if (!state) {
DRM_DEBUG_KMS("[CRTC:%d:%s] crtc restore failed, out of memory",
crtc->base.id, crtc->name);
return;
}
state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc);
retry:
crtc_state = drm_atomic_get_crtc_state(state, crtc);
ret = PTR_ERR_OR_ZERO(crtc_state);
if (!ret) {
if (!crtc_state->active)
goto out;
crtc_state->mode_changed = true;
ret = drm_atomic_commit(state);
}
if (ret == -EDEADLK) {
drm_atomic_state_clear(state);
drm_modeset_backoff(state->acquire_ctx);
goto retry;
}
if (ret)
out:
drm_atomic_state_free(state);
}
/*
* FIXME: Remove this once i915 is fully DRIVER_ATOMIC by calling
* drm_atomic_helper_legacy_gamma_set() directly.
*/
static int intel_atomic_legacy_gamma_set(struct drm_crtc *crtc,
u16 *red, u16 *green, u16 *blue,
uint32_t size)
{
struct drm_device *dev = crtc->dev;
struct drm_mode_config *config = &dev->mode_config;
struct drm_crtc_state *state;
int ret;
ret = drm_atomic_helper_legacy_gamma_set(crtc, red, green, blue, size);
if (ret)
return ret;
/*
* Make sure we update the legacy properties so this works when
* atomic is not enabled.
*/
state = crtc->state;
drm_object_property_set_value(&crtc->base,
config->degamma_lut_property,
(state->degamma_lut) ?
state->degamma_lut->base.id : 0);
drm_object_property_set_value(&crtc->base,
config->ctm_property,
(state->ctm) ?
state->ctm->base.id : 0);
drm_object_property_set_value(&crtc->base,
config->gamma_lut_property,
(state->gamma_lut) ?
state->gamma_lut->base.id : 0);
return 0;
}
static const struct drm_crtc_funcs intel_crtc_funcs = {
.gamma_set = intel_atomic_legacy_gamma_set,
.set_config = drm_atomic_helper_set_config,
.set_property = drm_atomic_helper_crtc_set_property,
.destroy = intel_crtc_destroy,
.page_flip = intel_crtc_page_flip,
.atomic_duplicate_state = intel_crtc_duplicate_state,
.atomic_destroy_state = intel_crtc_destroy_state,
};
/**
* intel_prepare_plane_fb - Prepare fb for usage on plane
* @plane: drm plane to prepare for
* @fb: framebuffer to prepare for presentation
*
* Prepares a framebuffer for usage on a display plane. Generally this
* involves pinning the underlying object and updating the frontbuffer tracking
* bits. Some older platforms need special physical address handling for
* cursor planes.
*
* Must be called with struct_mutex held.
*
* Returns 0 on success, negative error code on failure.
*/
int
intel_prepare_plane_fb(struct drm_plane *plane,
struct drm_plane_state *new_state)
{
struct drm_device *dev = plane->dev;
struct drm_framebuffer *fb = new_state->fb;
struct drm_i915_gem_object *obj = intel_fb_obj(fb);
struct drm_i915_gem_object *old_obj = intel_fb_obj(plane->state->fb);
struct reservation_object *resv;
int ret = 0;
if (!obj && !old_obj)
return 0;
if (old_obj) {
struct drm_crtc_state *crtc_state =
drm_atomic_get_existing_crtc_state(new_state->state, plane->state->crtc);
/* Big Hammer, we also need to ensure that any pending
* MI_WAIT_FOR_EVENT inside a user batch buffer on the
* current scanout is retired before unpinning the old
* framebuffer. Note that we rely on userspace rendering
* into the buffer attached to the pipe they are waiting
* on. If not, userspace generates a GPU hang with IPEHR
* point to the MI_WAIT_FOR_EVENT.
*
* This should only fail upon a hung GPU, in which case we
* can safely continue.
*/
if (needs_modeset(crtc_state))
ret = i915_gem_object_wait_rendering(old_obj, true);
if (ret) {
/* GPU hangs should have been swallowed by the wait */
WARN_ON(ret == -EIO);
return ret;
}
}
if (!obj)
return 0;
/* For framebuffer backed by dmabuf, wait for fence */
resv = i915_gem_object_get_dmabuf_resv(obj);
if (resv) {
long lret;
lret = reservation_object_wait_timeout_rcu(resv, false, true,
MAX_SCHEDULE_TIMEOUT);
if (lret == -ERESTARTSYS)
return lret;
WARN(lret < 0, "waiting returns %li\n", lret);
}
if (plane->type == DRM_PLANE_TYPE_CURSOR &&
INTEL_INFO(dev)->cursor_needs_physical) {
int align = IS_I830(dev) ? 16 * 1024 : 256;
ret = i915_gem_object_attach_phys(obj, align);
if (ret)
DRM_DEBUG_KMS("failed to attach phys object\n");
} else {
struct i915_vma *vma;
vma = intel_pin_and_fence_fb_obj(fb, new_state->rotation);
if (IS_ERR(vma))
ret = PTR_ERR(vma);
}
if (ret == 0) {
to_intel_plane_state(new_state)->wait_req =
i915_gem_active_get(&obj->last_write,
&obj->base.dev->struct_mutex);
}
return ret;
}
/**
* intel_cleanup_plane_fb - Cleans up an fb after plane use
* @plane: drm plane to clean up for
* @fb: old framebuffer that was on plane
*
* Cleans up a framebuffer that has just been removed from a plane.
*
* Must be called with struct_mutex held.
*/
void
intel_cleanup_plane_fb(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct drm_device *dev = plane->dev;
struct intel_plane_state *old_intel_state;
struct intel_plane_state *intel_state = to_intel_plane_state(plane->state);
struct drm_i915_gem_object *old_obj = intel_fb_obj(old_state->fb);
struct drm_i915_gem_object *obj = intel_fb_obj(plane->state->fb);
old_intel_state = to_intel_plane_state(old_state);
if (!obj && !old_obj)
return;
if (old_obj && (plane->type != DRM_PLANE_TYPE_CURSOR ||
!INTEL_INFO(dev)->cursor_needs_physical))
intel_unpin_fb_obj(old_state->fb, old_state->rotation);
i915_gem_request_assign(&intel_state->wait_req, NULL);
i915_gem_request_assign(&old_intel_state->wait_req, NULL);
}
int
skl_max_scale(struct intel_crtc *intel_crtc, struct intel_crtc_state *crtc_state)
{
int max_scale;
int crtc_clock, cdclk;
if (!intel_crtc || !crtc_state->base.enable)
return DRM_PLANE_HELPER_NO_SCALING;
crtc_clock = crtc_state->base.adjusted_mode.crtc_clock;
cdclk = to_intel_atomic_state(crtc_state->base.state)->cdclk;
if (WARN_ON_ONCE(!crtc_clock || cdclk < crtc_clock))
return DRM_PLANE_HELPER_NO_SCALING;
/*
* skl max scale is lower of:
* close to 3 but not 3, -1 is for that purpose
* or
* cdclk/crtc_clock
*/
max_scale = min((1 << 16) * 3 - 1, (1 << 8) * ((cdclk << 8) / crtc_clock));
return max_scale;
}
static int
intel_check_primary_plane(struct drm_plane *plane,
struct intel_crtc_state *crtc_state,
struct intel_plane_state *state)
{
struct drm_i915_private *dev_priv = to_i915(plane->dev);
struct drm_crtc *crtc = state->base.crtc;
int min_scale = DRM_PLANE_HELPER_NO_SCALING;
int max_scale = DRM_PLANE_HELPER_NO_SCALING;
bool can_position = false;
int ret;
if (INTEL_GEN(dev_priv) >= 9) {
/* use scaler when colorkey is not required */
if (state->ckey.flags == I915_SET_COLORKEY_NONE) {
min_scale = 1;
max_scale = skl_max_scale(to_intel_crtc(crtc), crtc_state);
}
can_position = true;
}
ret = drm_plane_helper_check_state(&state->base,
&state->clip,
min_scale, max_scale,
can_position, true);
if (ret)
return ret;
if (!state->base.fb)
return 0;
if (INTEL_GEN(dev_priv) >= 9) {
ret = skl_check_plane_surface(state);
if (ret)
return ret;
}
return 0;
}
static void intel_begin_crtc_commit(struct drm_crtc *crtc,
struct drm_crtc_state *old_crtc_state)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_crtc_state *old_intel_state =
to_intel_crtc_state(old_crtc_state);
bool modeset = needs_modeset(crtc->state);
enum pipe pipe = intel_crtc->pipe;
/* Perform vblank evasion around commit operation */
intel_pipe_update_start(intel_crtc);
if (modeset)
return;
if (crtc->state->color_mgmt_changed || to_intel_crtc_state(crtc->state)->update_pipe) {
intel_color_set_csc(crtc->state);
intel_color_load_luts(crtc->state);
}
if (to_intel_crtc_state(crtc->state)->update_pipe)
intel_update_pipe_config(intel_crtc, old_intel_state);
else if (INTEL_GEN(dev_priv) >= 9) {
skl_detach_scalers(intel_crtc);
I915_WRITE(PIPE_WM_LINETIME(pipe),
dev_priv->wm.skl_hw.wm_linetime[pipe]);
}
}
static void intel_finish_crtc_commit(struct drm_crtc *crtc,
struct drm_crtc_state *old_crtc_state)
{
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
intel_pipe_update_end(intel_crtc, NULL);
}
/**
* intel_plane_destroy - destroy a plane
* @plane: plane to destroy
*
* Common destruction function for all types of planes (primary, cursor,
* sprite).
*/
void intel_plane_destroy(struct drm_plane *plane)
{
if (!plane)
return;
drm_plane_cleanup(plane);
kfree(to_intel_plane(plane));
}
const struct drm_plane_funcs intel_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = intel_plane_destroy,
.set_property = drm_atomic_helper_plane_set_property,
.atomic_get_property = intel_plane_atomic_get_property,
.atomic_set_property = intel_plane_atomic_set_property,
.atomic_duplicate_state = intel_plane_duplicate_state,
.atomic_destroy_state = intel_plane_destroy_state,
};
static struct drm_plane *intel_primary_plane_create(struct drm_device *dev,
int pipe)
{
struct intel_plane *primary = NULL;
struct intel_plane_state *state = NULL;
const uint32_t *intel_primary_formats;
unsigned int num_formats;
int ret;
primary = kzalloc(sizeof(*primary), GFP_KERNEL);
if (!primary)
goto fail;
state = intel_create_plane_state(&primary->base);
if (!state)
goto fail;
primary->base.state = &state->base;
primary->can_scale = false;
primary->max_downscale = 1;
if (INTEL_INFO(dev)->gen >= 9) {
primary->can_scale = true;
state->scaler_id = -1;
}
primary->pipe = pipe;
primary->plane = pipe;
primary->frontbuffer_bit = INTEL_FRONTBUFFER_PRIMARY(pipe);
primary->check_plane = intel_check_primary_plane;
if (HAS_FBC(dev) && INTEL_INFO(dev)->gen < 4)
primary->plane = !pipe;
if (INTEL_INFO(dev)->gen >= 9) {
intel_primary_formats = skl_primary_formats;
num_formats = ARRAY_SIZE(skl_primary_formats);
primary->update_plane = skylake_update_primary_plane;
primary->disable_plane = skylake_disable_primary_plane;
} else if (HAS_PCH_SPLIT(dev)) {
intel_primary_formats = i965_primary_formats;
num_formats = ARRAY_SIZE(i965_primary_formats);
primary->update_plane = ironlake_update_primary_plane;
primary->disable_plane = i9xx_disable_primary_plane;
} else if (INTEL_INFO(dev)->gen >= 4) {
intel_primary_formats = i965_primary_formats;
num_formats = ARRAY_SIZE(i965_primary_formats);
primary->update_plane = i9xx_update_primary_plane;
primary->disable_plane = i9xx_disable_primary_plane;
} else {
intel_primary_formats = i8xx_primary_formats;
num_formats = ARRAY_SIZE(i8xx_primary_formats);
primary->update_plane = i9xx_update_primary_plane;
primary->disable_plane = i9xx_disable_primary_plane;
}
if (INTEL_INFO(dev)->gen >= 9)
ret = drm_universal_plane_init(dev, &primary->base, 0,
&intel_plane_funcs,
intel_primary_formats, num_formats,
DRM_PLANE_TYPE_PRIMARY,
"plane 1%c", pipe_name(pipe));
else if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev))
ret = drm_universal_plane_init(dev, &primary->base, 0,
&intel_plane_funcs,
intel_primary_formats, num_formats,
DRM_PLANE_TYPE_PRIMARY,
"primary %c", pipe_name(pipe));
else
ret = drm_universal_plane_init(dev, &primary->base, 0,
&intel_plane_funcs,
intel_primary_formats, num_formats,
DRM_PLANE_TYPE_PRIMARY,
"plane %c", plane_name(primary->plane));
if (ret)
goto fail;
if (INTEL_INFO(dev)->gen >= 4)
intel_create_rotation_property(dev, primary);
drm_plane_helper_add(&primary->base, &intel_plane_helper_funcs);
return &primary->base;
fail:
kfree(state);
kfree(primary);
return NULL;
}
void intel_create_rotation_property(struct drm_device *dev, struct intel_plane *plane)
{
if (!dev->mode_config.rotation_property) {
unsigned long flags = DRM_ROTATE_0 |
DRM_ROTATE_180;
if (INTEL_INFO(dev)->gen >= 9)
flags |= DRM_ROTATE_90 | DRM_ROTATE_270;
dev->mode_config.rotation_property =
drm_mode_create_rotation_property(dev, flags);
}
if (dev->mode_config.rotation_property)
drm_object_attach_property(&plane->base.base,
dev->mode_config.rotation_property,
plane->base.state->rotation);
}
static int
intel_check_cursor_plane(struct drm_plane *plane,
struct intel_crtc_state *crtc_state,
struct intel_plane_state *state)
{
struct drm_framebuffer *fb = state->base.fb;
struct drm_i915_gem_object *obj = intel_fb_obj(fb);
enum pipe pipe = to_intel_plane(plane)->pipe;
unsigned stride;
int ret;
ret = drm_plane_helper_check_state(&state->base,
&state->clip,
DRM_PLANE_HELPER_NO_SCALING,
DRM_PLANE_HELPER_NO_SCALING,
true, true);
if (ret)
return ret;
/* if we want to turn off the cursor ignore width and height */
if (!obj)
return 0;
/* Check for which cursor types we support */
if (!cursor_size_ok(plane->dev, state->base.crtc_w, state->base.crtc_h)) {
DRM_DEBUG("Cursor dimension %dx%d not supported\n",
state->base.crtc_w, state->base.crtc_h);
return -EINVAL;
}
stride = roundup_pow_of_two(state->base.crtc_w) * 4;
if (obj->base.size < stride * state->base.crtc_h) {
DRM_DEBUG_KMS("buffer is too small\n");
return -ENOMEM;
}
if (fb->modifier[0] != DRM_FORMAT_MOD_NONE) {
DRM_DEBUG_KMS("cursor cannot be tiled\n");
return -EINVAL;
}
/*
* There's something wrong with the cursor on CHV pipe C.
* If it straddles the left edge of the screen then
* moving it away from the edge or disabling it often
* results in a pipe underrun, and often that can lead to
* dead pipe (constant underrun reported, and it scans
* out just a solid color). To recover from that, the
* display power well must be turned off and on again.
* Refuse the put the cursor into that compromised position.
*/
if (IS_CHERRYVIEW(plane->dev) && pipe == PIPE_C &&
state->base.visible && state->base.crtc_x < 0) {
DRM_DEBUG_KMS("CHV cursor C not allowed to straddle the left screen edge\n");
return -EINVAL;
}
return 0;
}
static void
intel_disable_cursor_plane(struct drm_plane *plane,
struct drm_crtc *crtc)
{
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
intel_crtc->cursor_addr = 0;
intel_crtc_update_cursor(crtc, NULL);
}
static void
intel_update_cursor_plane(struct drm_plane *plane,
const struct intel_crtc_state *crtc_state,
const struct intel_plane_state *state)
{
struct drm_crtc *crtc = crtc_state->base.crtc;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct drm_device *dev = plane->dev;
struct drm_i915_gem_object *obj = intel_fb_obj(state->base.fb);
uint32_t addr;
if (!obj)
addr = 0;
else if (!INTEL_INFO(dev)->cursor_needs_physical)
addr = i915_gem_object_ggtt_offset(obj, NULL);
else
addr = obj->phys_handle->busaddr;
intel_crtc->cursor_addr = addr;
intel_crtc_update_cursor(crtc, state);
}
static struct drm_plane *intel_cursor_plane_create(struct drm_device *dev,
int pipe)
{
struct intel_plane *cursor = NULL;
struct intel_plane_state *state = NULL;
int ret;
cursor = kzalloc(sizeof(*cursor), GFP_KERNEL);
if (!cursor)
goto fail;
state = intel_create_plane_state(&cursor->base);
if (!state)
goto fail;
cursor->base.state = &state->base;
cursor->can_scale = false;
cursor->max_downscale = 1;
cursor->pipe = pipe;
cursor->plane = pipe;
cursor->frontbuffer_bit = INTEL_FRONTBUFFER_CURSOR(pipe);
cursor->check_plane = intel_check_cursor_plane;
cursor->update_plane = intel_update_cursor_plane;
cursor->disable_plane = intel_disable_cursor_plane;
ret = drm_universal_plane_init(dev, &cursor->base, 0,
&intel_plane_funcs,
intel_cursor_formats,
ARRAY_SIZE(intel_cursor_formats),
DRM_PLANE_TYPE_CURSOR,
"cursor %c", pipe_name(pipe));
if (ret)
goto fail;
if (INTEL_INFO(dev)->gen >= 4) {
if (!dev->mode_config.rotation_property)
dev->mode_config.rotation_property =
drm_mode_create_rotation_property(dev,
DRM_ROTATE_0 |
DRM_ROTATE_180);
if (dev->mode_config.rotation_property)
drm_object_attach_property(&cursor->base.base,
dev->mode_config.rotation_property,
state->base.rotation);
}
if (INTEL_INFO(dev)->gen >=9)
state->scaler_id = -1;
drm_plane_helper_add(&cursor->base, &intel_plane_helper_funcs);
return &cursor->base;
fail:
kfree(state);
kfree(cursor);
return NULL;
}
static void skl_init_scalers(struct drm_device *dev, struct intel_crtc *intel_crtc,
struct intel_crtc_state *crtc_state)
{
int i;
struct intel_scaler *intel_scaler;
struct intel_crtc_scaler_state *scaler_state = &crtc_state->scaler_state;
for (i = 0; i < intel_crtc->num_scalers; i++) {
intel_scaler = &scaler_state->scalers[i];
intel_scaler->in_use = 0;
intel_scaler->mode = PS_SCALER_MODE_DYN;
}
scaler_state->scaler_id = -1;
}
static void intel_crtc_init(struct drm_device *dev, int pipe)
{
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc;
struct intel_crtc_state *crtc_state = NULL;
struct drm_plane *primary = NULL;
struct drm_plane *cursor = NULL;
int ret;
intel_crtc = kzalloc(sizeof(*intel_crtc), GFP_KERNEL);
if (intel_crtc == NULL)
return;
crtc_state = kzalloc(sizeof(*crtc_state), GFP_KERNEL);
if (!crtc_state)
goto fail;
intel_crtc->config = crtc_state;
intel_crtc->base.state = &crtc_state->base;
crtc_state->base.crtc = &intel_crtc->base;
/* initialize shared scalers */
if (INTEL_INFO(dev)->gen >= 9) {
if (pipe == PIPE_C)
intel_crtc->num_scalers = 1;
else
intel_crtc->num_scalers = SKL_NUM_SCALERS;
skl_init_scalers(dev, intel_crtc, crtc_state);
}
primary = intel_primary_plane_create(dev, pipe);
if (!primary)
goto fail;
cursor = intel_cursor_plane_create(dev, pipe);
if (!cursor)
goto fail;
ret = drm_crtc_init_with_planes(dev, &intel_crtc->base, primary,
cursor, &intel_crtc_funcs,
"pipe %c", pipe_name(pipe));
if (ret)
goto fail;
/*
* On gen2/3 only plane A can do fbc, but the panel fitter and lvds port
* is hooked to pipe B. Hence we want plane A feeding pipe B.
*/
intel_crtc->pipe = pipe;
intel_crtc->plane = pipe;
if (HAS_FBC(dev) && INTEL_INFO(dev)->gen < 4) {
DRM_DEBUG_KMS("swapping pipes & planes for FBC\n");
intel_crtc->plane = !pipe;
}
intel_crtc->cursor_base = ~0;
intel_crtc->cursor_cntl = ~0;
intel_crtc->cursor_size = ~0;
intel_crtc->wm.cxsr_allowed = true;
BUG_ON(pipe >= ARRAY_SIZE(dev_priv->plane_to_crtc_mapping) ||
dev_priv->plane_to_crtc_mapping[intel_crtc->plane] != NULL);
dev_priv->plane_to_crtc_mapping[intel_crtc->plane] = &intel_crtc->base;
dev_priv->pipe_to_crtc_mapping[intel_crtc->pipe] = &intel_crtc->base;
drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs);
intel_color_init(&intel_crtc->base);
WARN_ON(drm_crtc_index(&intel_crtc->base) != intel_crtc->pipe);
return;
fail:
intel_plane_destroy(primary);
intel_plane_destroy(cursor);
kfree(crtc_state);
kfree(intel_crtc);
}
enum pipe intel_get_pipe_from_connector(struct intel_connector *connector)
{
struct drm_encoder *encoder = connector->base.encoder;
struct drm_device *dev = connector->base.dev;
WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
if (!encoder || WARN_ON(!encoder->crtc))
return INVALID_PIPE;
return to_intel_crtc(encoder->crtc)->pipe;
}
int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
struct drm_file *file)
{
struct drm_i915_get_pipe_from_crtc_id *pipe_from_crtc_id = data;
struct drm_crtc *drmmode_crtc;
struct intel_crtc *crtc;
drmmode_crtc = drm_crtc_find(dev, pipe_from_crtc_id->crtc_id);
if (!drmmode_crtc)
return -ENOENT;
crtc = to_intel_crtc(drmmode_crtc);
pipe_from_crtc_id->pipe = crtc->pipe;
return 0;
}
static int intel_encoder_clones(struct intel_encoder *encoder)
{
struct drm_device *dev = encoder->base.dev;
struct intel_encoder *source_encoder;
int index_mask = 0;
int entry = 0;
for_each_intel_encoder(dev, source_encoder) {
if (encoders_cloneable(encoder, source_encoder))
index_mask |= (1 << entry);
entry++;
}
return index_mask;
}
static bool has_edp_a(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
if (!IS_MOBILE(dev))
return false;
if ((I915_READ(DP_A) & DP_DETECTED) == 0)
return false;
if (IS_GEN5(dev) && (I915_READ(FUSE_STRAP) & ILK_eDP_A_DISABLE))
return false;
return true;
}
static bool intel_crt_present(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
if (INTEL_INFO(dev)->gen >= 9)
return false;
if (IS_HSW_ULT(dev) || IS_BDW_ULT(dev))
return false;
if (IS_CHERRYVIEW(dev))
return false;
if (HAS_PCH_LPT_H(dev) && I915_READ(SFUSE_STRAP) & SFUSE_STRAP_CRT_DISABLED)
return false;
/* DDI E can't be used if DDI A requires 4 lanes */
if (HAS_DDI(dev) && I915_READ(DDI_BUF_CTL(PORT_A)) & DDI_A_4_LANES)
return false;
if (!dev_priv->vbt.int_crt_support)
return false;
return true;
}
void intel_pps_unlock_regs_wa(struct drm_i915_private *dev_priv)
{
int pps_num;
int pps_idx;
if (HAS_DDI(dev_priv))
return;
/*
* This w/a is needed at least on CPT/PPT, but to be sure apply it
* everywhere where registers can be write protected.
*/
if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
pps_num = 2;
else
pps_num = 1;
for (pps_idx = 0; pps_idx < pps_num; pps_idx++) {
u32 val = I915_READ(PP_CONTROL(pps_idx));
val = (val & ~PANEL_UNLOCK_MASK) | PANEL_UNLOCK_REGS;
I915_WRITE(PP_CONTROL(pps_idx), val);
}
}
static void intel_pps_init(struct drm_i915_private *dev_priv)
{
if (HAS_PCH_SPLIT(dev_priv) || IS_BROXTON(dev_priv))
dev_priv->pps_mmio_base = PCH_PPS_BASE;
else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
dev_priv->pps_mmio_base = VLV_PPS_BASE;
else
dev_priv->pps_mmio_base = PPS_BASE;
intel_pps_unlock_regs_wa(dev_priv);
}
static void intel_setup_outputs(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_encoder *encoder;
bool dpd_is_edp = false;
intel_pps_init(dev_priv);
/*
* intel_edp_init_connector() depends on this completing first, to
* prevent the registeration of both eDP and LVDS and the incorrect
* sharing of the PPS.
*/
intel_lvds_init(dev);
if (intel_crt_present(dev))
intel_crt_init(dev);
if (IS_BROXTON(dev)) {
/*
* FIXME: Broxton doesn't support port detection via the
* DDI_BUF_CTL_A or SFUSE_STRAP registers, find another way to
* detect the ports.
*/
intel_ddi_init(dev, PORT_A);
intel_ddi_init(dev, PORT_B);
intel_ddi_init(dev, PORT_C);
intel_dsi_init(dev);
} else if (HAS_DDI(dev)) {
int found;
/*
* Haswell uses DDI functions to detect digital outputs.
* On SKL pre-D0 the strap isn't connected, so we assume
* it's there.
*/
found = I915_READ(DDI_BUF_CTL(PORT_A)) & DDI_INIT_DISPLAY_DETECTED;
/* WaIgnoreDDIAStrap: skl */
if (found || IS_SKYLAKE(dev) || IS_KABYLAKE(dev))
intel_ddi_init(dev, PORT_A);
/* DDI B, C and D detection is indicated by the SFUSE_STRAP
* register */
found = I915_READ(SFUSE_STRAP);
if (found & SFUSE_STRAP_DDIB_DETECTED)
intel_ddi_init(dev, PORT_B);
if (found & SFUSE_STRAP_DDIC_DETECTED)
intel_ddi_init(dev, PORT_C);
if (found & SFUSE_STRAP_DDID_DETECTED)
intel_ddi_init(dev, PORT_D);
/*
* On SKL we don't have a way to detect DDI-E so we rely on VBT.
*/
if ((IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) &&
(dev_priv->vbt.ddi_port_info[PORT_E].supports_dp ||
dev_priv->vbt.ddi_port_info[PORT_E].supports_dvi ||
dev_priv->vbt.ddi_port_info[PORT_E].supports_hdmi))
intel_ddi_init(dev, PORT_E);
} else if (HAS_PCH_SPLIT(dev)) {
int found;
dpd_is_edp = intel_dp_is_edp(dev, PORT_D);
if (has_edp_a(dev))
intel_dp_init(dev, DP_A, PORT_A);
if (I915_READ(PCH_HDMIB) & SDVO_DETECTED) {
/* PCH SDVOB multiplex with HDMIB */
found = intel_sdvo_init(dev, PCH_SDVOB, PORT_B);
if (!found)
intel_hdmi_init(dev, PCH_HDMIB, PORT_B);
if (!found && (I915_READ(PCH_DP_B) & DP_DETECTED))
intel_dp_init(dev, PCH_DP_B, PORT_B);
}
if (I915_READ(PCH_HDMIC) & SDVO_DETECTED)
intel_hdmi_init(dev, PCH_HDMIC, PORT_C);
if (!dpd_is_edp && I915_READ(PCH_HDMID) & SDVO_DETECTED)
intel_hdmi_init(dev, PCH_HDMID, PORT_D);
if (I915_READ(PCH_DP_C) & DP_DETECTED)
intel_dp_init(dev, PCH_DP_C, PORT_C);
if (I915_READ(PCH_DP_D) & DP_DETECTED)
intel_dp_init(dev, PCH_DP_D, PORT_D);
} else if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) {
bool has_edp, has_port;
/*
* The DP_DETECTED bit is the latched state of the DDC
* SDA pin at boot. However since eDP doesn't require DDC
* (no way to plug in a DP->HDMI dongle) the DDC pins for
* eDP ports may have been muxed to an alternate function.
* Thus we can't rely on the DP_DETECTED bit alone to detect
* eDP ports. Consult the VBT as well as DP_DETECTED to
* detect eDP ports.
*
* Sadly the straps seem to be missing sometimes even for HDMI
* ports (eg. on Voyo V3 - CHT x7-Z8700), so check both strap
* and VBT for the presence of the port. Additionally we can't
* trust the port type the VBT declares as we've seen at least
* HDMI ports that the VBT claim are DP or eDP.
*/
has_edp = intel_dp_is_edp(dev, PORT_B);
has_port = intel_bios_is_port_present(dev_priv, PORT_B);
if (I915_READ(VLV_DP_B) & DP_DETECTED || has_port)
has_edp &= intel_dp_init(dev, VLV_DP_B, PORT_B);
if ((I915_READ(VLV_HDMIB) & SDVO_DETECTED || has_port) && !has_edp)
intel_hdmi_init(dev, VLV_HDMIB, PORT_B);
has_edp = intel_dp_is_edp(dev, PORT_C);
has_port = intel_bios_is_port_present(dev_priv, PORT_C);
if (I915_READ(VLV_DP_C) & DP_DETECTED || has_port)
has_edp &= intel_dp_init(dev, VLV_DP_C, PORT_C);
if ((I915_READ(VLV_HDMIC) & SDVO_DETECTED || has_port) && !has_edp)
intel_hdmi_init(dev, VLV_HDMIC, PORT_C);
if (IS_CHERRYVIEW(dev)) {
/*
* eDP not supported on port D,
* so no need to worry about it
*/
has_port = intel_bios_is_port_present(dev_priv, PORT_D);
if (I915_READ(CHV_DP_D) & DP_DETECTED || has_port)
intel_dp_init(dev, CHV_DP_D, PORT_D);
if (I915_READ(CHV_HDMID) & SDVO_DETECTED || has_port)
intel_hdmi_init(dev, CHV_HDMID, PORT_D);
}
intel_dsi_init(dev);
} else if (!IS_GEN2(dev) && !IS_PINEVIEW(dev)) {
bool found = false;
if (I915_READ(GEN3_SDVOB) & SDVO_DETECTED) {
DRM_DEBUG_KMS("probing SDVOB\n");
found = intel_sdvo_init(dev, GEN3_SDVOB, PORT_B);
if (!found && IS_G4X(dev)) {
DRM_DEBUG_KMS("probing HDMI on SDVOB\n");
intel_hdmi_init(dev, GEN4_HDMIB, PORT_B);
}
if (!found && IS_G4X(dev))
intel_dp_init(dev, DP_B, PORT_B);
}
/* Before G4X SDVOC doesn't have its own detect register */
if (I915_READ(GEN3_SDVOB) & SDVO_DETECTED) {
DRM_DEBUG_KMS("probing SDVOC\n");
found = intel_sdvo_init(dev, GEN3_SDVOC, PORT_C);
}
if (!found && (I915_READ(GEN3_SDVOC) & SDVO_DETECTED)) {
if (IS_G4X(dev)) {
DRM_DEBUG_KMS("probing HDMI on SDVOC\n");
intel_hdmi_init(dev, GEN4_HDMIC, PORT_C);
}
if (IS_G4X(dev))
intel_dp_init(dev, DP_C, PORT_C);
}
if (IS_G4X(dev) &&
(I915_READ(DP_D) & DP_DETECTED))
intel_dp_init(dev, DP_D, PORT_D);
} else if (IS_GEN2(dev))
intel_dvo_init(dev);
if (SUPPORTS_TV(dev))
intel_tv_init(dev);
intel_psr_init(dev);
for_each_intel_encoder(dev, encoder) {
encoder->base.possible_crtcs = encoder->crtc_mask;
encoder->base.possible_clones =
intel_encoder_clones(encoder);
}
intel_init_pch_refclk(dev);
drm_helper_move_panel_connectors_to_head(dev);
}
static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
{
struct drm_device *dev = fb->dev;
struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
drm_framebuffer_cleanup(fb);
mutex_lock(&dev->struct_mutex);
WARN_ON(!intel_fb->obj->framebuffer_references--);
i915_gem_object_put(intel_fb->obj);
mutex_unlock(&dev->struct_mutex);
kfree(intel_fb);
}
static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb,
struct drm_file *file,
unsigned int *handle)
{
struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
struct drm_i915_gem_object *obj = intel_fb->obj;
if (obj->userptr.mm) {
DRM_DEBUG("attempting to use a userptr for a framebuffer, denied\n");
return -EINVAL;
}
return drm_gem_handle_create(file, &obj->base, handle);
}
static int intel_user_framebuffer_dirty(struct drm_framebuffer *fb,
struct drm_file *file,
unsigned flags, unsigned color,
struct drm_clip_rect *clips,
unsigned num_clips)
{
struct drm_device *dev = fb->dev;
struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
struct drm_i915_gem_object *obj = intel_fb->obj;
mutex_lock(&dev->struct_mutex);
intel_fb_obj_flush(obj, false, ORIGIN_DIRTYFB);
mutex_unlock(&dev->struct_mutex);
return 0;
}
static const struct drm_framebuffer_funcs intel_fb_funcs = {
.destroy = intel_user_framebuffer_destroy,
.create_handle = intel_user_framebuffer_create_handle,
.dirty = intel_user_framebuffer_dirty,
};
static
u32 intel_fb_pitch_limit(struct drm_device *dev, uint64_t fb_modifier,
uint32_t pixel_format)
{
u32 gen = INTEL_INFO(dev)->gen;
if (gen >= 9) {
int cpp = drm_format_plane_cpp(pixel_format, 0);
/* "The stride in bytes must not exceed the of the size of 8K
* pixels and 32K bytes."
*/
return min(8192 * cpp, 32768);
} else if (gen >= 5 && !IS_VALLEYVIEW(dev) && !IS_CHERRYVIEW(dev)) {
return 32*1024;
} else if (gen >= 4) {
if (fb_modifier == I915_FORMAT_MOD_X_TILED)
return 16*1024;
else
return 32*1024;
} else if (gen >= 3) {
if (fb_modifier == I915_FORMAT_MOD_X_TILED)
return 8*1024;
else
return 16*1024;
} else {
/* XXX DSPC is limited to 4k tiled */
return 8*1024;
}
}
static int intel_framebuffer_init(struct drm_device *dev,
struct intel_framebuffer *intel_fb,
struct drm_mode_fb_cmd2 *mode_cmd,
struct drm_i915_gem_object *obj)
{
struct drm_i915_private *dev_priv = to_i915(dev);
unsigned int tiling = i915_gem_object_get_tiling(obj);
int ret;
u32 pitch_limit, stride_alignment;
char *format_name;
WARN_ON(!mutex_is_locked(&dev->struct_mutex));
if (mode_cmd->flags & DRM_MODE_FB_MODIFIERS) {
/*
* If there's a fence, enforce that
* the fb modifier and tiling mode match.
*/
if (tiling != I915_TILING_NONE &&
tiling != intel_fb_modifier_to_tiling(mode_cmd->modifier[0])) {
DRM_DEBUG("tiling_mode doesn't match fb modifier\n");
return -EINVAL;
}
} else {
if (tiling == I915_TILING_X) {
mode_cmd->modifier[0] = I915_FORMAT_MOD_X_TILED;
} else if (tiling == I915_TILING_Y) {
DRM_DEBUG("No Y tiling for legacy addfb\n");
return -EINVAL;
}
}
/* Passed in modifier sanity checking. */
switch (mode_cmd->modifier[0]) {
case I915_FORMAT_MOD_Y_TILED:
case I915_FORMAT_MOD_Yf_TILED:
if (INTEL_INFO(dev)->gen < 9) {
DRM_DEBUG("Unsupported tiling 0x%llx!\n",
mode_cmd->modifier[0]);
return -EINVAL;
}
case DRM_FORMAT_MOD_NONE:
case I915_FORMAT_MOD_X_TILED:
break;
default:
DRM_DEBUG("Unsupported fb modifier 0x%llx!\n",
mode_cmd->modifier[0]);
return -EINVAL;
}
/*
* gen2/3 display engine uses the fence if present,
* so the tiling mode must match the fb modifier exactly.
*/
if (INTEL_INFO(dev_priv)->gen < 4 &&
tiling != intel_fb_modifier_to_tiling(mode_cmd->modifier[0])) {
DRM_DEBUG("tiling_mode must match fb modifier exactly on gen2/3\n");
return -EINVAL;
}
stride_alignment = intel_fb_stride_alignment(dev_priv,
mode_cmd->modifier[0],
mode_cmd->pixel_format);
if (mode_cmd->pitches[0] & (stride_alignment - 1)) {
DRM_DEBUG("pitch (%d) must be at least %u byte aligned\n",
mode_cmd->pitches[0], stride_alignment);
return -EINVAL;
}
pitch_limit = intel_fb_pitch_limit(dev, mode_cmd->modifier[0],
mode_cmd->pixel_format);
if (mode_cmd->pitches[0] > pitch_limit) {
DRM_DEBUG("%s pitch (%u) must be at less than %d\n",
mode_cmd->modifier[0] != DRM_FORMAT_MOD_NONE ?
"tiled" : "linear",
mode_cmd->pitches[0], pitch_limit);
return -EINVAL;
}
/*
* If there's a fence, enforce that
* the fb pitch and fence stride match.
*/
if (tiling != I915_TILING_NONE &&
mode_cmd->pitches[0] != i915_gem_object_get_stride(obj)) {
DRM_DEBUG("pitch (%d) must match tiling stride (%d)\n",
mode_cmd->pitches[0],
i915_gem_object_get_stride(obj));
return -EINVAL;
}
/* Reject formats not supported by any plane early. */
switch (mode_cmd->pixel_format) {
case DRM_FORMAT_C8:
case DRM_FORMAT_RGB565:
case DRM_FORMAT_XRGB8888:
case DRM_FORMAT_ARGB8888:
break;
case DRM_FORMAT_XRGB1555:
if (INTEL_INFO(dev)->gen > 3) {
format_name = drm_get_format_name(mode_cmd->pixel_format);
DRM_DEBUG("unsupported pixel format: %s\n", format_name);
kfree(format_name);
return -EINVAL;
}
break;
case DRM_FORMAT_ABGR8888:
if (!IS_VALLEYVIEW(dev) && !IS_CHERRYVIEW(dev) &&
INTEL_INFO(dev)->gen < 9) {
format_name = drm_get_format_name(mode_cmd->pixel_format);
DRM_DEBUG("unsupported pixel format: %s\n", format_name);
kfree(format_name);
return -EINVAL;
}
break;
case DRM_FORMAT_XBGR8888:
case DRM_FORMAT_XRGB2101010:
case DRM_FORMAT_XBGR2101010:
if (INTEL_INFO(dev)->gen < 4) {
format_name = drm_get_format_name(mode_cmd->pixel_format);
DRM_DEBUG("unsupported pixel format: %s\n", format_name);
kfree(format_name);
return -EINVAL;
}
break;
case DRM_FORMAT_ABGR2101010:
if (!IS_VALLEYVIEW(dev) && !IS_CHERRYVIEW(dev)) {
format_name = drm_get_format_name(mode_cmd->pixel_format);
DRM_DEBUG("unsupported pixel format: %s\n", format_name);
kfree(format_name);
return -EINVAL;
}
break;
case DRM_FORMAT_YUYV:
case DRM_FORMAT_UYVY:
case DRM_FORMAT_YVYU:
case DRM_FORMAT_VYUY:
if (INTEL_INFO(dev)->gen < 5) {
format_name = drm_get_format_name(mode_cmd->pixel_format);
DRM_DEBUG("unsupported pixel format: %s\n", format_name);
kfree(format_name);
return -EINVAL;
}
break;
default:
format_name = drm_get_format_name(mode_cmd->pixel_format);
DRM_DEBUG("unsupported pixel format: %s\n", format_name);
kfree(format_name);
return -EINVAL;
}
/* FIXME need to adjust LINOFF/TILEOFF accordingly. */
if (mode_cmd->offsets[0] != 0)
return -EINVAL;
drm_helper_mode_fill_fb_struct(&intel_fb->base, mode_cmd);
intel_fb->obj = obj;
ret = intel_fill_fb_info(dev_priv, &intel_fb->base);
if (ret)
return ret;
ret = drm_framebuffer_init(dev, &intel_fb->base, &intel_fb_funcs);
if (ret) {
DRM_ERROR("framebuffer init failed %d\n", ret);
return ret;
}
intel_fb->obj->framebuffer_references++;
return 0;
}
static struct drm_framebuffer *
intel_user_framebuffer_create(struct drm_device *dev,
struct drm_file *filp,
const struct drm_mode_fb_cmd2 *user_mode_cmd)
{
struct drm_framebuffer *fb;
struct drm_i915_gem_object *obj;
struct drm_mode_fb_cmd2 mode_cmd = *user_mode_cmd;
obj = i915_gem_object_lookup(filp, mode_cmd.handles[0]);
if (!obj)
return ERR_PTR(-ENOENT);
fb = intel_framebuffer_create(dev, &mode_cmd, obj);
if (IS_ERR(fb))
i915_gem_object_put_unlocked(obj);
return fb;
}
static const struct drm_mode_config_funcs intel_mode_funcs = {
.fb_create = intel_user_framebuffer_create,
.output_poll_changed = intel_fbdev_output_poll_changed,
.atomic_check = intel_atomic_check,
.atomic_commit = intel_atomic_commit,
.atomic_state_alloc = intel_atomic_state_alloc,
.atomic_state_clear = intel_atomic_state_clear,
};
/**
* intel_init_display_hooks - initialize the display modesetting hooks
* @dev_priv: device private
*/
void intel_init_display_hooks(struct drm_i915_private *dev_priv)
{
if (INTEL_INFO(dev_priv)->gen >= 9) {
dev_priv->display.get_pipe_config = haswell_get_pipe_config;
dev_priv->display.get_initial_plane_config =
skylake_get_initial_plane_config;
dev_priv->display.crtc_compute_clock =
haswell_crtc_compute_clock;
dev_priv->display.crtc_enable = haswell_crtc_enable;
dev_priv->display.crtc_disable = haswell_crtc_disable;
} else if (HAS_DDI(dev_priv)) {
dev_priv->display.get_pipe_config = haswell_get_pipe_config;
dev_priv->display.get_initial_plane_config =
ironlake_get_initial_plane_config;
dev_priv->display.crtc_compute_clock =
haswell_crtc_compute_clock;
dev_priv->display.crtc_enable = haswell_crtc_enable;
dev_priv->display.crtc_disable = haswell_crtc_disable;
} else if (HAS_PCH_SPLIT(dev_priv)) {
dev_priv->display.get_pipe_config = ironlake_get_pipe_config;
dev_priv->display.get_initial_plane_config =
ironlake_get_initial_plane_config;
dev_priv->display.crtc_compute_clock =
ironlake_crtc_compute_clock;
dev_priv->display.crtc_enable = ironlake_crtc_enable;
dev_priv->display.crtc_disable = ironlake_crtc_disable;
} else if (IS_CHERRYVIEW(dev_priv)) {
dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
dev_priv->display.get_initial_plane_config =
i9xx_get_initial_plane_config;
dev_priv->display.crtc_compute_clock = chv_crtc_compute_clock;
dev_priv->display.crtc_enable = valleyview_crtc_enable;
dev_priv->display.crtc_disable = i9xx_crtc_disable;
} else if (IS_VALLEYVIEW(dev_priv)) {
dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
dev_priv->display.get_initial_plane_config =
i9xx_get_initial_plane_config;
dev_priv->display.crtc_compute_clock = vlv_crtc_compute_clock;
dev_priv->display.crtc_enable = valleyview_crtc_enable;
dev_priv->display.crtc_disable = i9xx_crtc_disable;
} else if (IS_G4X(dev_priv)) {
dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
dev_priv->display.get_initial_plane_config =
i9xx_get_initial_plane_config;
dev_priv->display.crtc_compute_clock = g4x_crtc_compute_clock;
dev_priv->display.crtc_enable = i9xx_crtc_enable;
dev_priv->display.crtc_disable = i9xx_crtc_disable;
} else if (IS_PINEVIEW(dev_priv)) {
dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
dev_priv->display.get_initial_plane_config =
i9xx_get_initial_plane_config;
dev_priv->display.crtc_compute_clock = pnv_crtc_compute_clock;
dev_priv->display.crtc_enable = i9xx_crtc_enable;
dev_priv->display.crtc_disable = i9xx_crtc_disable;
} else if (!IS_GEN2(dev_priv)) {
dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
dev_priv->display.get_initial_plane_config =
i9xx_get_initial_plane_config;
dev_priv->display.crtc_compute_clock = i9xx_crtc_compute_clock;
dev_priv->display.crtc_enable = i9xx_crtc_enable;
dev_priv->display.crtc_disable = i9xx_crtc_disable;
} else {
dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
dev_priv->display.get_initial_plane_config =
i9xx_get_initial_plane_config;
dev_priv->display.crtc_compute_clock = i8xx_crtc_compute_clock;
dev_priv->display.crtc_enable = i9xx_crtc_enable;
dev_priv->display.crtc_disable = i9xx_crtc_disable;
}
/* Returns the core display clock speed */
if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv))
dev_priv->display.get_display_clock_speed =
skylake_get_display_clock_speed;
else if (IS_BROXTON(dev_priv))
dev_priv->display.get_display_clock_speed =
broxton_get_display_clock_speed;
else if (IS_BROADWELL(dev_priv))
dev_priv->display.get_display_clock_speed =
broadwell_get_display_clock_speed;
else if (IS_HASWELL(dev_priv))
dev_priv->display.get_display_clock_speed =
haswell_get_display_clock_speed;
else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
dev_priv->display.get_display_clock_speed =
valleyview_get_display_clock_speed;
else if (IS_GEN5(dev_priv))
dev_priv->display.get_display_clock_speed =
ilk_get_display_clock_speed;
else if (IS_I945G(dev_priv) || IS_BROADWATER(dev_priv) ||
IS_GEN6(dev_priv) || IS_IVYBRIDGE(dev_priv))
dev_priv->display.get_display_clock_speed =
i945_get_display_clock_speed;
else if (IS_GM45(dev_priv))
dev_priv->display.get_display_clock_speed =
gm45_get_display_clock_speed;
else if (IS_CRESTLINE(dev_priv))
dev_priv->display.get_display_clock_speed =
i965gm_get_display_clock_speed;
else if (IS_PINEVIEW(dev_priv))
dev_priv->display.get_display_clock_speed =
pnv_get_display_clock_speed;
else if (IS_G33(dev_priv) || IS_G4X(dev_priv))
dev_priv->display.get_display_clock_speed =
g33_get_display_clock_speed;
else if (IS_I915G(dev_priv))
dev_priv->display.get_display_clock_speed =
i915_get_display_clock_speed;
else if (IS_I945GM(dev_priv) || IS_845G(dev_priv))
dev_priv->display.get_display_clock_speed =
i9xx_misc_get_display_clock_speed;
else if (IS_I915GM(dev_priv))
dev_priv->display.get_display_clock_speed =
i915gm_get_display_clock_speed;
else if (IS_I865G(dev_priv))
dev_priv->display.get_display_clock_speed =
i865_get_display_clock_speed;
else if (IS_I85X(dev_priv))
dev_priv->display.get_display_clock_speed =
i85x_get_display_clock_speed;
else { /* 830 */
WARN(!IS_I830(dev_priv), "Unknown platform. Assuming 133 MHz CDCLK\n");
dev_priv->display.get_display_clock_speed =
i830_get_display_clock_speed;
}
if (IS_GEN5(dev_priv)) {
dev_priv->display.fdi_link_train = ironlake_fdi_link_train;
} else if (IS_GEN6(dev_priv)) {
dev_priv->display.fdi_link_train = gen6_fdi_link_train;
} else if (IS_IVYBRIDGE(dev_priv)) {
/* FIXME: detect B0+ stepping and use auto training */
dev_priv->display.fdi_link_train = ivb_manual_fdi_link_train;
} else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
dev_priv->display.fdi_link_train = hsw_fdi_link_train;
}
if (IS_BROADWELL(dev_priv)) {
dev_priv->display.modeset_commit_cdclk =
broadwell_modeset_commit_cdclk;
dev_priv->display.modeset_calc_cdclk =
broadwell_modeset_calc_cdclk;
} else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
dev_priv->display.modeset_commit_cdclk =
valleyview_modeset_commit_cdclk;
dev_priv->display.modeset_calc_cdclk =
valleyview_modeset_calc_cdclk;
} else if (IS_BROXTON(dev_priv)) {
dev_priv->display.modeset_commit_cdclk =
bxt_modeset_commit_cdclk;
dev_priv->display.modeset_calc_cdclk =
bxt_modeset_calc_cdclk;
} else if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) {
dev_priv->display.modeset_commit_cdclk =
skl_modeset_commit_cdclk;
dev_priv->display.modeset_calc_cdclk =
skl_modeset_calc_cdclk;
}
if (dev_priv->info.gen >= 9)
dev_priv->display.update_crtcs = skl_update_crtcs;
else
dev_priv->display.update_crtcs = intel_update_crtcs;
switch (INTEL_INFO(dev_priv)->gen) {
case 2:
dev_priv->display.queue_flip = intel_gen2_queue_flip;
break;
case 3:
dev_priv->display.queue_flip = intel_gen3_queue_flip;
break;
case 4:
case 5:
dev_priv->display.queue_flip = intel_gen4_queue_flip;
break;
case 6:
dev_priv->display.queue_flip = intel_gen6_queue_flip;
break;
case 7:
case 8: /* FIXME(BDW): Check that the gen8 RCS flip works. */
dev_priv->display.queue_flip = intel_gen7_queue_flip;
break;
case 9:
/* Drop through - unsupported since execlist only. */
default:
/* Default just returns -ENODEV to indicate unsupported */
dev_priv->display.queue_flip = intel_default_queue_flip;
}
}
/*
* Some BIOSes insist on assuming the GPU's pipe A is enabled at suspend,
* resume, or other times. This quirk makes sure that's the case for
* affected systems.
*/
static void quirk_pipea_force(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
dev_priv->quirks |= QUIRK_PIPEA_FORCE;
DRM_INFO("applying pipe a force quirk\n");
}
static void quirk_pipeb_force(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
dev_priv->quirks |= QUIRK_PIPEB_FORCE;
DRM_INFO("applying pipe b force quirk\n");
}
/*
* Some machines (Lenovo U160) do not work with SSC on LVDS for some reason
*/
static void quirk_ssc_force_disable(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
dev_priv->quirks |= QUIRK_LVDS_SSC_DISABLE;
DRM_INFO("applying lvds SSC disable quirk\n");
}
/*
* A machine (e.g. Acer Aspire 5734Z) may need to invert the panel backlight
* brightness value
*/
static void quirk_invert_brightness(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
dev_priv->quirks |= QUIRK_INVERT_BRIGHTNESS;
DRM_INFO("applying inverted panel brightness quirk\n");
}
/* Some VBT's incorrectly indicate no backlight is present */
static void quirk_backlight_present(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
dev_priv->quirks |= QUIRK_BACKLIGHT_PRESENT;
DRM_INFO("applying backlight present quirk\n");
}
struct intel_quirk {
int device;
int subsystem_vendor;
int subsystem_device;
void (*hook)(struct drm_device *dev);
};
/* For systems that don't have a meaningful PCI subdevice/subvendor ID */
struct intel_dmi_quirk {
void (*hook)(struct drm_device *dev);
const struct dmi_system_id (*dmi_id_list)[];
};
static int intel_dmi_reverse_brightness(const struct dmi_system_id *id)
{
DRM_INFO("Backlight polarity reversed on %s\n", id->ident);
return 1;
}
static const struct intel_dmi_quirk intel_dmi_quirks[] = {
{
.dmi_id_list = &(const struct dmi_system_id[]) {
{
.callback = intel_dmi_reverse_brightness,
.ident = "NCR Corporation",
.matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"),
DMI_MATCH(DMI_PRODUCT_NAME, ""),
},
},
{ } /* terminating entry */
},
.hook = quirk_invert_brightness,
},
};
static struct intel_quirk intel_quirks[] = {
/* Toshiba Protege R-205, S-209 needs pipe A force quirk */
{ 0x2592, 0x1179, 0x0001, quirk_pipea_force },
/* ThinkPad T60 needs pipe A force quirk (bug #16494) */
{ 0x2782, 0x17aa, 0x201a, quirk_pipea_force },
/* 830 needs to leave pipe A & dpll A up */
{ 0x3577, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },
/* 830 needs to leave pipe B & dpll B up */
{ 0x3577, PCI_ANY_ID, PCI_ANY_ID, quirk_pipeb_force },
/* Lenovo U160 cannot use SSC on LVDS */
{ 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable },
/* Sony Vaio Y cannot use SSC on LVDS */
{ 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable },
/* Acer Aspire 5734Z must invert backlight brightness */
{ 0x2a42, 0x1025, 0x0459, quirk_invert_brightness },
/* Acer/eMachines G725 */
{ 0x2a42, 0x1025, 0x0210, quirk_invert_brightness },
/* Acer/eMachines e725 */
{ 0x2a42, 0x1025, 0x0212, quirk_invert_brightness },
/* Acer/Packard Bell NCL20 */
{ 0x2a42, 0x1025, 0x034b, quirk_invert_brightness },
/* Acer Aspire 4736Z */
{ 0x2a42, 0x1025, 0x0260, quirk_invert_brightness },
/* Acer Aspire 5336 */
{ 0x2a42, 0x1025, 0x048a, quirk_invert_brightness },
/* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */
{ 0x0a06, 0x1025, 0x0a11, quirk_backlight_present },
/* Acer C720 Chromebook (Core i3 4005U) */
{ 0x0a16, 0x1025, 0x0a11, quirk_backlight_present },
/* Apple Macbook 2,1 (Core 2 T7400) */
{ 0x27a2, 0x8086, 0x7270, quirk_backlight_present },
/* Apple Macbook 4,1 */
{ 0x2a02, 0x106b, 0x00a1, quirk_backlight_present },
/* Toshiba CB35 Chromebook (Celeron 2955U) */
{ 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },
/* HP Chromebook 14 (Celeron 2955U) */
{ 0x0a06, 0x103c, 0x21ed, quirk_backlight_present },
/* Dell Chromebook 11 */
{ 0x0a06, 0x1028, 0x0a35, quirk_backlight_present },
/* Dell Chromebook 11 (2015 version) */
{ 0x0a16, 0x1028, 0x0a35, quirk_backlight_present },
};
static void intel_init_quirks(struct drm_device *dev)
{
struct pci_dev *d = dev->pdev;
int i;
for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
struct intel_quirk *q = &intel_quirks[i];
if (d->device == q->device &&
(d->subsystem_vendor == q->subsystem_vendor ||
q->subsystem_vendor == PCI_ANY_ID) &&
(d->subsystem_device == q->subsystem_device ||
q->subsystem_device == PCI_ANY_ID))
q->hook(dev);
}
for (i = 0; i < ARRAY_SIZE(intel_dmi_quirks); i++) {
if (dmi_check_system(*intel_dmi_quirks[i].dmi_id_list) != 0)
intel_dmi_quirks[i].hook(dev);
}
}
/* Disable the VGA plane that we never use */
static void i915_disable_vga(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
struct pci_dev *pdev = dev_priv->drm.pdev;
u8 sr1;
i915_reg_t vga_reg = i915_vgacntrl_reg(dev);
/* WaEnableVGAAccessThroughIOPort:ctg,elk,ilk,snb,ivb,vlv,hsw */
vga_get_uninterruptible(pdev, VGA_RSRC_LEGACY_IO);
outb(SR01, VGA_SR_INDEX);
sr1 = inb(VGA_SR_DATA);
outb(sr1 | 1<<5, VGA_SR_DATA);
vga_put(pdev, VGA_RSRC_LEGACY_IO);
udelay(300);
I915_WRITE(vga_reg, VGA_DISP_DISABLE);
POSTING_READ(vga_reg);
}
void intel_modeset_init_hw(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
intel_update_cdclk(dev);
dev_priv->atomic_cdclk_freq = dev_priv->cdclk_freq;
intel_init_clock_gating(dev);
}
/*
* Calculate what we think the watermarks should be for the state we've read
* out of the hardware and then immediately program those watermarks so that
* we ensure the hardware settings match our internal state.
*
* We can calculate what we think WM's should be by creating a duplicate of the
* current state (which was constructed during hardware readout) and running it
* through the atomic check code to calculate new watermark values in the
* state object.
*/
static void sanitize_watermarks(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_atomic_state *state;
struct drm_crtc *crtc;
struct drm_crtc_state *cstate;
struct drm_modeset_acquire_ctx ctx;
int ret;
int i;
/* Only supported on platforms that use atomic watermark design */
if (!dev_priv->display.optimize_watermarks)
return;
/*
* We need to hold connection_mutex before calling duplicate_state so
* that the connector loop is protected.
*/
drm_modeset_acquire_init(&ctx, 0);
retry:
ret = drm_modeset_lock_all_ctx(dev, &ctx);
if (ret == -EDEADLK) {
drm_modeset_backoff(&ctx);
goto retry;
} else if (WARN_ON(ret)) {
goto fail;
}
state = drm_atomic_helper_duplicate_state(dev, &ctx);
if (WARN_ON(IS_ERR(state)))
goto fail;
/*
* Hardware readout is the only time we don't want to calculate
* intermediate watermarks (since we don't trust the current
* watermarks).
*/
to_intel_atomic_state(state)->skip_intermediate_wm = true;
ret = intel_atomic_check(dev, state);
if (ret) {
/*
* If we fail here, it means that the hardware appears to be
* programmed in a way that shouldn't be possible, given our
* understanding of watermark requirements. This might mean a
* mistake in the hardware readout code or a mistake in the
* watermark calculations for a given platform. Raise a WARN
* so that this is noticeable.
*
* If this actually happens, we'll have to just leave the
* BIOS-programmed watermarks untouched and hope for the best.
*/
WARN(true, "Could not determine valid watermarks for inherited state\n");
goto fail;
}
/* Write calculated watermark values back */
for_each_crtc_in_state(state, crtc, cstate, i) {
struct intel_crtc_state *cs = to_intel_crtc_state(cstate);
cs->wm.need_postvbl_update = true;
dev_priv->display.optimize_watermarks(cs);
}
drm_atomic_state_free(state);
fail:
drm_modeset_drop_locks(&ctx);
drm_modeset_acquire_fini(&ctx);
}
void intel_modeset_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
struct i915_ggtt *ggtt = &dev_priv->ggtt;
int sprite, ret;
enum pipe pipe;
struct intel_crtc *crtc;
drm_mode_config_init(dev);
dev->mode_config.min_width = 0;
dev->mode_config.min_height = 0;
dev->mode_config.preferred_depth = 24;
dev->mode_config.prefer_shadow = 1;
dev->mode_config.allow_fb_modifiers = true;
dev->mode_config.funcs = &intel_mode_funcs;
intel_init_quirks(dev);
intel_init_pm(dev);
if (INTEL_INFO(dev)->num_pipes == 0)
return;
/*
* There may be no VBT; and if the BIOS enabled SSC we can
* just keep using it to avoid unnecessary flicker. Whereas if the
* BIOS isn't using it, don't assume it will work even if the VBT
* indicates as much.
*/
if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) {
bool bios_lvds_use_ssc = !!(I915_READ(PCH_DREF_CONTROL) &
DREF_SSC1_ENABLE);
if (dev_priv->vbt.lvds_use_ssc != bios_lvds_use_ssc) {
DRM_DEBUG_KMS("SSC %sabled by BIOS, overriding VBT which says %sabled\n",
bios_lvds_use_ssc ? "en" : "dis",
dev_priv->vbt.lvds_use_ssc ? "en" : "dis");
dev_priv->vbt.lvds_use_ssc = bios_lvds_use_ssc;
}
}
if (IS_GEN2(dev)) {
dev->mode_config.max_width = 2048;
dev->mode_config.max_height = 2048;
} else if (IS_GEN3(dev)) {
dev->mode_config.max_width = 4096;
dev->mode_config.max_height = 4096;
} else {
dev->mode_config.max_width = 8192;
dev->mode_config.max_height = 8192;
}
if (IS_845G(dev) || IS_I865G(dev)) {
dev->mode_config.cursor_width = IS_845G(dev) ? 64 : 512;
dev->mode_config.cursor_height = 1023;
} else if (IS_GEN2(dev)) {
dev->mode_config.cursor_width = GEN2_CURSOR_WIDTH;
dev->mode_config.cursor_height = GEN2_CURSOR_HEIGHT;
} else {
dev->mode_config.cursor_width = MAX_CURSOR_WIDTH;
dev->mode_config.cursor_height = MAX_CURSOR_HEIGHT;
}
dev->mode_config.fb_base = ggtt->mappable_base;
DRM_DEBUG_KMS("%d display pipe%s available.\n",
INTEL_INFO(dev)->num_pipes,
INTEL_INFO(dev)->num_pipes > 1 ? "s" : "");
for_each_pipe(dev_priv, pipe) {
intel_crtc_init(dev, pipe);
for_each_sprite(dev_priv, pipe, sprite) {
ret = intel_plane_init(dev, pipe, sprite);
if (ret)
DRM_DEBUG_KMS("pipe %c sprite %c init failed: %d\n",
pipe_name(pipe), sprite_name(pipe, sprite), ret);
}
}
intel_update_czclk(dev_priv);
intel_update_cdclk(dev);
intel_shared_dpll_init(dev);
if (dev_priv->max_cdclk_freq == 0)
intel_update_max_cdclk(dev);
/* Just disable it once at startup */
i915_disable_vga(dev);
intel_setup_outputs(dev);
drm_modeset_lock_all(dev);
intel_modeset_setup_hw_state(dev);
drm_modeset_unlock_all(dev);
for_each_intel_crtc(dev, crtc) {
struct intel_initial_plane_config plane_config = {};
if (!crtc->active)
continue;
/*
* Note that reserving the BIOS fb up front prevents us
* from stuffing other stolen allocations like the ring
* on top. This prevents some ugliness at boot time, and
* can even allow for smooth boot transitions if the BIOS
* fb is large enough for the active pipe configuration.
*/
dev_priv->display.get_initial_plane_config(crtc,
&plane_config);
/*
* If the fb is shared between multiple heads, we'll
* just get the first one.
*/
intel_find_initial_plane_obj(crtc, &plane_config);
}
/*
* Make sure hardware watermarks really match the state we read out.
* Note that we need to do this after reconstructing the BIOS fb's
* since the watermark calculation done here will use pstate->fb.
*/
sanitize_watermarks(dev);
}
static void intel_enable_pipe_a(struct drm_device *dev)
{
struct intel_connector *connector;
struct drm_connector *crt = NULL;
struct intel_load_detect_pipe load_detect_temp;
struct drm_modeset_acquire_ctx *ctx = dev->mode_config.acquire_ctx;
/* We can't just switch on the pipe A, we need to set things up with a
* proper mode and output configuration. As a gross hack, enable pipe A
* by enabling the load detect pipe once. */
for_each_intel_connector(dev, connector) {
if (connector->encoder->type == INTEL_OUTPUT_ANALOG) {
crt = &connector->base;
break;
}
}
if (!crt)
return;
if (intel_get_load_detect_pipe(crt, NULL, &load_detect_temp, ctx))
intel_release_load_detect_pipe(crt, &load_detect_temp, ctx);
}
static bool
intel_check_plane_mapping(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
u32 val;
if (INTEL_INFO(dev)->num_pipes == 1)
return true;
val = I915_READ(DSPCNTR(!crtc->plane));
if ((val & DISPLAY_PLANE_ENABLE) &&
(!!(val & DISPPLANE_SEL_PIPE_MASK) == crtc->pipe))
return false;
return true;
}
static bool intel_crtc_has_encoders(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
struct intel_encoder *encoder;
for_each_encoder_on_crtc(dev, &crtc->base, encoder)
return true;
return false;
}
static struct intel_connector *intel_encoder_find_connector(struct intel_encoder *encoder)
{
struct drm_device *dev = encoder->base.dev;
struct intel_connector *connector;
for_each_connector_on_encoder(dev, &encoder->base, connector)
return connector;
return NULL;
}
static bool has_pch_trancoder(struct drm_i915_private *dev_priv,
enum transcoder pch_transcoder)
{
return HAS_PCH_IBX(dev_priv) || HAS_PCH_CPT(dev_priv) ||
(HAS_PCH_LPT_H(dev_priv) && pch_transcoder == TRANSCODER_A);
}
static void intel_sanitize_crtc(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
/* Clear any frame start delays used for debugging left by the BIOS */
if (!transcoder_is_dsi(cpu_transcoder)) {
i915_reg_t reg = PIPECONF(cpu_transcoder);
I915_WRITE(reg,
I915_READ(reg) & ~PIPECONF_FRAME_START_DELAY_MASK);
}
/* restore vblank interrupts to correct state */
drm_crtc_vblank_reset(&crtc->base);
if (crtc->active) {
struct intel_plane *plane;
drm_crtc_vblank_on(&crtc->base);
/* Disable everything but the primary plane */
for_each_intel_plane_on_crtc(dev, crtc, plane) {
if (plane->base.type == DRM_PLANE_TYPE_PRIMARY)
continue;
plane->disable_plane(&plane->base, &crtc->base);
}
}
/* We need to sanitize the plane -> pipe mapping first because this will
* disable the crtc (and hence change the state) if it is wrong. Note
* that gen4+ has a fixed plane -> pipe mapping. */
if (INTEL_INFO(dev)->gen < 4 && !intel_check_plane_mapping(crtc)) {
bool plane;
DRM_DEBUG_KMS("[CRTC:%d:%s] wrong plane connection detected!\n",
crtc->base.base.id, crtc->base.name);
/* Pipe has the wrong plane attached and the plane is active.
* Temporarily change the plane mapping and disable everything
* ... */
plane = crtc->plane;
to_intel_plane_state(crtc->base.primary->state)->base.visible = true;
crtc->plane = !plane;
intel_crtc_disable_noatomic(&crtc->base);
crtc->plane = plane;
}
if (dev_priv->quirks & QUIRK_PIPEA_FORCE &&
crtc->pipe == PIPE_A && !crtc->active) {
/* BIOS forgot to enable pipe A, this mostly happens after
* resume. Force-enable the pipe to fix this, the update_dpms
* call below we restore the pipe to the right state, but leave
* the required bits on. */
intel_enable_pipe_a(dev);
}
/* Adjust the state of the output pipe according to whether we
* have active connectors/encoders. */
if (crtc->active && !intel_crtc_has_encoders(crtc))
intel_crtc_disable_noatomic(&crtc->base);
if (crtc->active || HAS_GMCH_DISPLAY(dev)) {
/*
* We start out with underrun reporting disabled to avoid races.
* For correct bookkeeping mark this on active crtcs.
*
* Also on gmch platforms we dont have any hardware bits to
* disable the underrun reporting. Which means we need to start
* out with underrun reporting disabled also on inactive pipes,
* since otherwise we'll complain about the garbage we read when
* e.g. coming up after runtime pm.
*
* No protection against concurrent access is required - at
* worst a fifo underrun happens which also sets this to false.
*/
crtc->cpu_fifo_underrun_disabled = true;
/*
* We track the PCH trancoder underrun reporting state
* within the crtc. With crtc for pipe A housing the underrun
* reporting state for PCH transcoder A, crtc for pipe B housing
* it for PCH transcoder B, etc. LPT-H has only PCH transcoder A,
* and marking underrun reporting as disabled for the non-existing
* PCH transcoders B and C would prevent enabling the south
* error interrupt (see cpt_can_enable_serr_int()).
*/
if (has_pch_trancoder(dev_priv, (enum transcoder)crtc->pipe))
crtc->pch_fifo_underrun_disabled = true;
}
}
static void intel_sanitize_encoder(struct intel_encoder *encoder)
{
struct intel_connector *connector;
/* We need to check both for a crtc link (meaning that the
* encoder is active and trying to read from a pipe) and the
* pipe itself being active. */
bool has_active_crtc = encoder->base.crtc &&
to_intel_crtc(encoder->base.crtc)->active;
connector = intel_encoder_find_connector(encoder);
if (connector && !has_active_crtc) {
DRM_DEBUG_KMS("[ENCODER:%d:%s] has active connectors but no active pipe!\n",
encoder->base.base.id,
encoder->base.name);
/* Connector is active, but has no active pipe. This is
* fallout from our resume register restoring. Disable
* the encoder manually again. */
if (encoder->base.crtc) {
struct drm_crtc_state *crtc_state = encoder->base.crtc->state;
DRM_DEBUG_KMS("[ENCODER:%d:%s] manually disabled\n",
encoder->base.base.id,
encoder->base.name);
encoder->disable(encoder, to_intel_crtc_state(crtc_state), connector->base.state);
if (encoder->post_disable)
encoder->post_disable(encoder, to_intel_crtc_state(crtc_state), connector->base.state);
}
encoder->base.crtc = NULL;
/* Inconsistent output/port/pipe state happens presumably due to
* a bug in one of the get_hw_state functions. Or someplace else
* in our code, like the register restore mess on resume. Clamp
* things to off as a safer default. */
connector->base.dpms = DRM_MODE_DPMS_OFF;
connector->base.encoder = NULL;
}
/* Enabled encoders without active connectors will be fixed in
* the crtc fixup. */
}
void i915_redisable_vga_power_on(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
i915_reg_t vga_reg = i915_vgacntrl_reg(dev);
if (!(I915_READ(vga_reg) & VGA_DISP_DISABLE)) {
DRM_DEBUG_KMS("Something enabled VGA plane, disabling it\n");
i915_disable_vga(dev);
}
}
void i915_redisable_vga(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
/* This function can be called both from intel_modeset_setup_hw_state or
* at a very early point in our resume sequence, where the power well
* structures are not yet restored. Since this function is at a very
* paranoid "someone might have enabled VGA while we were not looking"
* level, just check if the power well is enabled instead of trying to
* follow the "don't touch the power well if we don't need it" policy
* the rest of the driver uses. */
if (!intel_display_power_get_if_enabled(dev_priv, POWER_DOMAIN_VGA))
return;
i915_redisable_vga_power_on(dev);
intel_display_power_put(dev_priv, POWER_DOMAIN_VGA);
}
static bool primary_get_hw_state(struct intel_plane *plane)
{
struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
return I915_READ(DSPCNTR(plane->plane)) & DISPLAY_PLANE_ENABLE;
}
/* FIXME read out full plane state for all planes */
static void readout_plane_state(struct intel_crtc *crtc)
{
struct drm_plane *primary = crtc->base.primary;
struct intel_plane_state *plane_state =
to_intel_plane_state(primary->state);
plane_state->base.visible = crtc->active &&
primary_get_hw_state(to_intel_plane(primary));
if (plane_state->base.visible)
crtc->base.state->plane_mask |= 1 << drm_plane_index(primary);
}
static void intel_modeset_readout_hw_state(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe;
struct intel_crtc *crtc;
struct intel_encoder *encoder;
struct intel_connector *connector;
int i;
dev_priv->active_crtcs = 0;
for_each_intel_crtc(dev, crtc) {
struct intel_crtc_state *crtc_state = crtc->config;
int pixclk = 0;
__drm_atomic_helper_crtc_destroy_state(&crtc_state->base);
memset(crtc_state, 0, sizeof(*crtc_state));
crtc_state->base.crtc = &crtc->base;
crtc_state->base.active = crtc_state->base.enable =
dev_priv->display.get_pipe_config(crtc, crtc_state);
crtc->base.enabled = crtc_state->base.enable;
crtc->active = crtc_state->base.active;
if (crtc_state->base.active) {
dev_priv->active_crtcs |= 1 << crtc->pipe;
if (INTEL_GEN(dev_priv) >= 9 || IS_BROADWELL(dev_priv))
pixclk = ilk_pipe_pixel_rate(crtc_state);
else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
pixclk = crtc_state->base.adjusted_mode.crtc_clock;
else
WARN_ON(dev_priv->display.modeset_calc_cdclk);
/* pixel rate mustn't exceed 95% of cdclk with IPS on BDW */
if (IS_BROADWELL(dev_priv) && crtc_state->ips_enabled)
pixclk = DIV_ROUND_UP(pixclk * 100, 95);
}
dev_priv->min_pixclk[crtc->pipe] = pixclk;
readout_plane_state(crtc);
DRM_DEBUG_KMS("[CRTC:%d:%s] hw state readout: %s\n",
crtc->base.base.id, crtc->base.name,
crtc->active ? "enabled" : "disabled");
}
for (i = 0; i < dev_priv->num_shared_dpll; i++) {
struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
pll->on = pll->funcs.get_hw_state(dev_priv, pll,
&pll->config.hw_state);
pll->config.crtc_mask = 0;
for_each_intel_crtc(dev, crtc) {
if (crtc->active && crtc->config->shared_dpll == pll)
pll->config.crtc_mask |= 1 << crtc->pipe;
}
pll->active_mask = pll->config.crtc_mask;
DRM_DEBUG_KMS("%s hw state readout: crtc_mask 0x%08x, on %i\n",
pll->name, pll->config.crtc_mask, pll->on);
}
for_each_intel_encoder(dev, encoder) {
pipe = 0;
if (encoder->get_hw_state(encoder, &pipe)) {
crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
encoder->base.crtc = &crtc->base;
crtc->config->output_types |= 1 << encoder->type;
encoder->get_config(encoder, crtc->config);
} else {
encoder->base.crtc = NULL;
}
DRM_DEBUG_KMS("[ENCODER:%d:%s] hw state readout: %s, pipe %c\n",
encoder->base.base.id,
encoder->base.name,
encoder->base.crtc ? "enabled" : "disabled",
pipe_name(pipe));
}
for_each_intel_connector(dev, connector) {
if (connector->get_hw_state(connector)) {
connector->base.dpms = DRM_MODE_DPMS_ON;
encoder = connector->encoder;
connector->base.encoder = &encoder->base;
if (encoder->base.crtc &&
encoder->base.crtc->state->active) {
/*
* This has to be done during hardware readout
* because anything calling .crtc_disable may
* rely on the connector_mask being accurate.
*/
encoder->base.crtc->state->connector_mask |=
1 << drm_connector_index(&connector->base);
encoder->base.crtc->state->encoder_mask |=
1 << drm_encoder_index(&encoder->base);
}
} else {
connector->base.dpms = DRM_MODE_DPMS_OFF;
connector->base.encoder = NULL;
}
DRM_DEBUG_KMS("[CONNECTOR:%d:%s] hw state readout: %s\n",
connector->base.base.id,
connector->base.name,
connector->base.encoder ? "enabled" : "disabled");
}
for_each_intel_crtc(dev, crtc) {
crtc->base.hwmode = crtc->config->base.adjusted_mode;
memset(&crtc->base.mode, 0, sizeof(crtc->base.mode));
if (crtc->base.state->active) {
intel_mode_from_pipe_config(&crtc->base.mode, crtc->config);
intel_mode_from_pipe_config(&crtc->base.state->adjusted_mode, crtc->config);
WARN_ON(drm_atomic_set_mode_for_crtc(crtc->base.state, &crtc->base.mode));
/*
* The initial mode needs to be set in order to keep
* the atomic core happy. It wants a valid mode if the
* crtc's enabled, so we do the above call.
*
* At this point some state updated by the connectors
* in their ->detect() callback has not run yet, so
* no recalculation can be done yet.
*
* Even if we could do a recalculation and modeset
* right now it would cause a double modeset if
* fbdev or userspace chooses a different initial mode.
*
* If that happens, someone indicated they wanted a
* mode change, which means it's safe to do a full
* recalculation.
*/
crtc->base.state->mode.private_flags = I915_MODE_FLAG_INHERITED;
drm_calc_timestamping_constants(&crtc->base, &crtc->base.hwmode);
update_scanline_offset(crtc);
}
intel_pipe_config_sanity_check(dev_priv, crtc->config);
}
}
/* Scan out the current hw modeset state,
* and sanitizes it to the current state
*/
static void
intel_modeset_setup_hw_state(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe;
struct intel_crtc *crtc;
struct intel_encoder *encoder;
int i;
intel_modeset_readout_hw_state(dev);
/* HW state is read out, now we need to sanitize this mess. */
for_each_intel_encoder(dev, encoder) {
intel_sanitize_encoder(encoder);
}
for_each_pipe(dev_priv, pipe) {
crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
intel_sanitize_crtc(crtc);
intel_dump_pipe_config(crtc, crtc->config,
"[setup_hw_state]");
}
intel_modeset_update_connector_atomic_state(dev);
for (i = 0; i < dev_priv->num_shared_dpll; i++) {
struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
if (!pll->on || pll->active_mask)
continue;
DRM_DEBUG_KMS("%s enabled but not in use, disabling\n", pll->name);
pll->funcs.disable(dev_priv, pll);
pll->on = false;
}
if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev))
vlv_wm_get_hw_state(dev);
else if (IS_GEN9(dev))
skl_wm_get_hw_state(dev);
else if (HAS_PCH_SPLIT(dev))
ilk_wm_get_hw_state(dev);
for_each_intel_crtc(dev, crtc) {
unsigned long put_domains;
put_domains = modeset_get_crtc_power_domains(&crtc->base, crtc->config);
if (WARN_ON(put_domains))
modeset_put_power_domains(dev_priv, put_domains);
}
intel_display_set_init_power(dev_priv, false);
intel_fbc_init_pipe_state(dev_priv);
}
void intel_display_resume(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_atomic_state *state = dev_priv->modeset_restore_state;
struct drm_modeset_acquire_ctx ctx;
int ret;
dev_priv->modeset_restore_state = NULL;
if (state)
state->acquire_ctx = &ctx;
/*
* This is a cludge because with real atomic modeset mode_config.mutex
* won't be taken. Unfortunately some probed state like
* audio_codec_enable is still protected by mode_config.mutex, so lock
* it here for now.
*/
mutex_lock(&dev->mode_config.mutex);
drm_modeset_acquire_init(&ctx, 0);
while (1) {
ret = drm_modeset_lock_all_ctx(dev, &ctx);
if (ret != -EDEADLK)
break;
drm_modeset_backoff(&ctx);
}
if (!ret)
ret = __intel_display_resume(dev, state);
drm_modeset_drop_locks(&ctx);
drm_modeset_acquire_fini(&ctx);
mutex_unlock(&dev->mode_config.mutex);
if (ret) {
DRM_ERROR("Restoring old state failed with %i\n", ret);
drm_atomic_state_free(state);
}
}
void intel_modeset_gem_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_crtc *c;
struct drm_i915_gem_object *obj;
intel_init_gt_powersave(dev_priv);
intel_modeset_init_hw(dev);
intel_setup_overlay(dev_priv);
/*
* Make sure any fbs we allocated at startup are properly
* pinned & fenced. When we do the allocation it's too early
* for this.
*/
for_each_crtc(dev, c) {
struct i915_vma *vma;
obj = intel_fb_obj(c->primary->fb);
if (obj == NULL)
continue;
mutex_lock(&dev->struct_mutex);
vma = intel_pin_and_fence_fb_obj(c->primary->fb,
c->primary->state->rotation);
mutex_unlock(&dev->struct_mutex);
if (IS_ERR(vma)) {
DRM_ERROR("failed to pin boot fb on pipe %d\n",
to_intel_crtc(c)->pipe);
drm_framebuffer_unreference(c->primary->fb);
c->primary->fb = NULL;
c->primary->crtc = c->primary->state->crtc = NULL;
update_state_fb(c->primary);
c->state->plane_mask &= ~(1 << drm_plane_index(c->primary));
}
}
}
int intel_connector_register(struct drm_connector *connector)
{
struct intel_connector *intel_connector = to_intel_connector(connector);
int ret;
ret = intel_backlight_device_register(intel_connector);
if (ret)
goto err;
return 0;
err:
return ret;
}
void intel_connector_unregister(struct drm_connector *connector)
{
struct intel_connector *intel_connector = to_intel_connector(connector);
intel_backlight_device_unregister(intel_connector);
intel_panel_destroy_backlight(connector);
}
void intel_modeset_cleanup(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
intel_disable_gt_powersave(dev_priv);
/*
* Interrupts and polling as the first thing to avoid creating havoc.
* Too much stuff here (turning of connectors, ...) would
* experience fancy races otherwise.
*/
intel_irq_uninstall(dev_priv);
/*
* Due to the hpd irq storm handling the hotplug work can re-arm the
* poll handlers. Hence disable polling after hpd handling is shut down.
*/
drm_kms_helper_poll_fini(dev);
intel_unregister_dsm_handler();
intel_fbc_global_disable(dev_priv);
/* flush any delayed tasks or pending work */
flush_scheduled_work();
drm_mode_config_cleanup(dev);
intel_cleanup_overlay(dev_priv);
intel_cleanup_gt_powersave(dev_priv);
intel_teardown_gmbus(dev);
}
void intel_connector_attach_encoder(struct intel_connector *connector,
struct intel_encoder *encoder)
{
connector->encoder = encoder;
drm_mode_connector_attach_encoder(&connector->base,
&encoder->base);
}
/*
* set vga decode state - true == enable VGA decode
*/
int intel_modeset_vga_set_state(struct drm_device *dev, bool state)
{
struct drm_i915_private *dev_priv = to_i915(dev);
unsigned reg = INTEL_INFO(dev)->gen >= 6 ? SNB_GMCH_CTRL : INTEL_GMCH_CTRL;
u16 gmch_ctrl;
if (pci_read_config_word(dev_priv->bridge_dev, reg, &gmch_ctrl)) {
DRM_ERROR("failed to read control word\n");
return -EIO;
}
if (!!(gmch_ctrl & INTEL_GMCH_VGA_DISABLE) == !state)
return 0;
if (state)
gmch_ctrl &= ~INTEL_GMCH_VGA_DISABLE;
else
gmch_ctrl |= INTEL_GMCH_VGA_DISABLE;
if (pci_write_config_word(dev_priv->bridge_dev, reg, gmch_ctrl)) {
DRM_ERROR("failed to write control word\n");
return -EIO;
}
return 0;
}
#if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR)
struct intel_display_error_state {
u32 power_well_driver;
int num_transcoders;
struct intel_cursor_error_state {
u32 control;
u32 position;
u32 base;
u32 size;
} cursor[I915_MAX_PIPES];
struct intel_pipe_error_state {
bool power_domain_on;
u32 source;
u32 stat;
} pipe[I915_MAX_PIPES];
struct intel_plane_error_state {
u32 control;
u32 stride;
u32 size;
u32 pos;
u32 addr;
u32 surface;
u32 tile_offset;
} plane[I915_MAX_PIPES];
struct intel_transcoder_error_state {
bool power_domain_on;
enum transcoder cpu_transcoder;
u32 conf;
u32 htotal;
u32 hblank;
u32 hsync;
u32 vtotal;
u32 vblank;
u32 vsync;
} transcoder[4];
};
struct intel_display_error_state *
intel_display_capture_error_state(struct drm_i915_private *dev_priv)
{
struct intel_display_error_state *error;
int transcoders[] = {
TRANSCODER_A,
TRANSCODER_B,
TRANSCODER_C,
TRANSCODER_EDP,
};
int i;
if (INTEL_INFO(dev_priv)->num_pipes == 0)
return NULL;
error = kzalloc(sizeof(*error), GFP_ATOMIC);
if (error == NULL)
return NULL;
if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
error->power_well_driver = I915_READ(HSW_PWR_WELL_DRIVER);
for_each_pipe(dev_priv, i) {
error->pipe[i].power_domain_on =
__intel_display_power_is_enabled(dev_priv,
POWER_DOMAIN_PIPE(i));
if (!error->pipe[i].power_domain_on)
continue;
error->cursor[i].control = I915_READ(CURCNTR(i));
error->cursor[i].position = I915_READ(CURPOS(i));
error->cursor[i].base = I915_READ(CURBASE(i));
error->plane[i].control = I915_READ(DSPCNTR(i));
error->plane[i].stride = I915_READ(DSPSTRIDE(i));
if (INTEL_GEN(dev_priv) <= 3) {
error->plane[i].size = I915_READ(DSPSIZE(i));
error->plane[i].pos = I915_READ(DSPPOS(i));
}
if (INTEL_GEN(dev_priv) <= 7 && !IS_HASWELL(dev_priv))
error->plane[i].addr = I915_READ(DSPADDR(i));
if (INTEL_GEN(dev_priv) >= 4) {
error->plane[i].surface = I915_READ(DSPSURF(i));
error->plane[i].tile_offset = I915_READ(DSPTILEOFF(i));
}
error->pipe[i].source = I915_READ(PIPESRC(i));
if (HAS_GMCH_DISPLAY(dev_priv))
error->pipe[i].stat = I915_READ(PIPESTAT(i));
}
/* Note: this does not include DSI transcoders. */
error->num_transcoders = INTEL_INFO(dev_priv)->num_pipes;
if (HAS_DDI(dev_priv))
error->num_transcoders++; /* Account for eDP. */
for (i = 0; i < error->num_transcoders; i++) {
enum transcoder cpu_transcoder = transcoders[i];
error->transcoder[i].power_domain_on =
__intel_display_power_is_enabled(dev_priv,
POWER_DOMAIN_TRANSCODER(cpu_transcoder));
if (!error->transcoder[i].power_domain_on)
continue;
error->transcoder[i].cpu_transcoder = cpu_transcoder;
error->transcoder[i].conf = I915_READ(PIPECONF(cpu_transcoder));
error->transcoder[i].htotal = I915_READ(HTOTAL(cpu_transcoder));
error->transcoder[i].hblank = I915_READ(HBLANK(cpu_transcoder));
error->transcoder[i].hsync = I915_READ(HSYNC(cpu_transcoder));
error->transcoder[i].vtotal = I915_READ(VTOTAL(cpu_transcoder));
error->transcoder[i].vblank = I915_READ(VBLANK(cpu_transcoder));
error->transcoder[i].vsync = I915_READ(VSYNC(cpu_transcoder));
}
return error;
}
#define err_printf(e, ...) i915_error_printf(e, __VA_ARGS__)
void
intel_display_print_error_state(struct drm_i915_error_state_buf *m,
struct drm_device *dev,
struct intel_display_error_state *error)
{
struct drm_i915_private *dev_priv = to_i915(dev);
int i;
if (!error)
return;
err_printf(m, "Num Pipes: %d\n", INTEL_INFO(dev)->num_pipes);
if (IS_HASWELL(dev) || IS_BROADWELL(dev))
err_printf(m, "PWR_WELL_CTL2: %08x\n",
error->power_well_driver);
for_each_pipe(dev_priv, i) {
err_printf(m, "Pipe [%d]:\n", i);
err_printf(m, " Power: %s\n",
onoff(error->pipe[i].power_domain_on));
err_printf(m, " SRC: %08x\n", error->pipe[i].source);
err_printf(m, " STAT: %08x\n", error->pipe[i].stat);
err_printf(m, "Plane [%d]:\n", i);
err_printf(m, " CNTR: %08x\n", error->plane[i].control);
err_printf(m, " STRIDE: %08x\n", error->plane[i].stride);
if (INTEL_INFO(dev)->gen <= 3) {
err_printf(m, " SIZE: %08x\n", error->plane[i].size);
err_printf(m, " POS: %08x\n", error->plane[i].pos);
}
if (INTEL_INFO(dev)->gen <= 7 && !IS_HASWELL(dev))
err_printf(m, " ADDR: %08x\n", error->plane[i].addr);
if (INTEL_INFO(dev)->gen >= 4) {
err_printf(m, " SURF: %08x\n", error->plane[i].surface);
err_printf(m, " TILEOFF: %08x\n", error->plane[i].tile_offset);
}
err_printf(m, "Cursor [%d]:\n", i);
err_printf(m, " CNTR: %08x\n", error->cursor[i].control);
err_printf(m, " POS: %08x\n", error->cursor[i].position);
err_printf(m, " BASE: %08x\n", error->cursor[i].base);
}
for (i = 0; i < error->num_transcoders; i++) {
err_printf(m, "CPU transcoder: %s\n",
transcoder_name(error->transcoder[i].cpu_transcoder));
err_printf(m, " Power: %s\n",
onoff(error->transcoder[i].power_domain_on));
err_printf(m, " CONF: %08x\n", error->transcoder[i].conf);
err_printf(m, " HTOTAL: %08x\n", error->transcoder[i].htotal);
err_printf(m, " HBLANK: %08x\n", error->transcoder[i].hblank);
err_printf(m, " HSYNC: %08x\n", error->transcoder[i].hsync);
err_printf(m, " VTOTAL: %08x\n", error->transcoder[i].vtotal);
err_printf(m, " VBLANK: %08x\n", error->transcoder[i].vblank);
err_printf(m, " VSYNC: %08x\n", error->transcoder[i].vsync);
}
}
#endif
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