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linux/drivers/gpu/drm/meson/meson_overlay.c
Koen Kooi 42843dc2d5 drm/meson: Add implicit fencing support for primary and overlay planes 
Suggested by Qiang Yu <yuq825@gmail.com> to fix tearing artefacts in the
Kodi GUI.

Suggested-by: Qiang Yu <yuq825@gmail.com>
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
[narmstrong: added Suggested-by tag]
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1542621759-26413-1-git-send-email-koen@dominion.thruhere.net
2018-11-21 12:20:53 +01:00

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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2018 BayLibre, SAS
* Author: Neil Armstrong <narmstrong@baylibre.com>
* Copyright (C) 2015 Amlogic, Inc. All rights reserved.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/bitfield.h>
#include <linux/platform_device.h>
#include <drm/drmP.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_plane_helper.h>
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_rect.h>
#include "meson_overlay.h"
#include "meson_vpp.h"
#include "meson_viu.h"
#include "meson_canvas.h"
#include "meson_registers.h"
/* VD1_IF0_GEN_REG */
#define VD_URGENT_CHROMA BIT(28)
#define VD_URGENT_LUMA BIT(27)
#define VD_HOLD_LINES(lines) FIELD_PREP(GENMASK(24, 19), lines)
#define VD_DEMUX_MODE_RGB BIT(16)
#define VD_BYTES_PER_PIXEL(val) FIELD_PREP(GENMASK(15, 14), val)
#define VD_CHRO_RPT_LASTL_CTRL BIT(6)
#define VD_LITTLE_ENDIAN BIT(4)
#define VD_SEPARATE_EN BIT(1)
#define VD_ENABLE BIT(0)
/* VD1_IF0_CANVAS0 */
#define CANVAS_ADDR2(addr) FIELD_PREP(GENMASK(23, 16), addr)
#define CANVAS_ADDR1(addr) FIELD_PREP(GENMASK(15, 8), addr)
#define CANVAS_ADDR0(addr) FIELD_PREP(GENMASK(7, 0), addr)
/* VD1_IF0_LUMA_X0 VD1_IF0_CHROMA_X0 */
#define VD_X_START(value) FIELD_PREP(GENMASK(14, 0), value)
#define VD_X_END(value) FIELD_PREP(GENMASK(30, 16), value)
/* VD1_IF0_LUMA_Y0 VD1_IF0_CHROMA_Y0 */
#define VD_Y_START(value) FIELD_PREP(GENMASK(12, 0), value)
#define VD_Y_END(value) FIELD_PREP(GENMASK(28, 16), value)
/* VD1_IF0_GEN_REG2 */
#define VD_COLOR_MAP(value) FIELD_PREP(GENMASK(1, 0), value)
/* VIU_VD1_FMT_CTRL */
#define VD_HORZ_Y_C_RATIO(value) FIELD_PREP(GENMASK(22, 21), value)
#define VD_HORZ_FMT_EN BIT(20)
#define VD_VERT_RPT_LINE0 BIT(16)
#define VD_VERT_INITIAL_PHASE(value) FIELD_PREP(GENMASK(11, 8), value)
#define VD_VERT_PHASE_STEP(value) FIELD_PREP(GENMASK(7, 1), value)
#define VD_VERT_FMT_EN BIT(0)
/* VPP_POSTBLEND_VD1_H_START_END */
#define VD_H_END(value) FIELD_PREP(GENMASK(11, 0), value)
#define VD_H_START(value) FIELD_PREP(GENMASK(27, 16), value)
/* VPP_POSTBLEND_VD1_V_START_END */
#define VD_V_END(value) FIELD_PREP(GENMASK(11, 0), value)
#define VD_V_START(value) FIELD_PREP(GENMASK(27, 16), value)
/* VPP_BLEND_VD2_V_START_END */
#define VD2_V_END(value) FIELD_PREP(GENMASK(11, 0), value)
#define VD2_V_START(value) FIELD_PREP(GENMASK(27, 16), value)
/* VIU_VD1_FMT_W */
#define VD_V_WIDTH(value) FIELD_PREP(GENMASK(11, 0), value)
#define VD_H_WIDTH(value) FIELD_PREP(GENMASK(27, 16), value)
/* VPP_HSC_REGION12_STARTP VPP_HSC_REGION34_STARTP */
#define VD_REGION24_START(value) FIELD_PREP(GENMASK(11, 0), value)
#define VD_REGION13_END(value) FIELD_PREP(GENMASK(27, 16), value)
struct meson_overlay {
struct drm_plane base;
struct meson_drm *priv;
};
#define to_meson_overlay(x) container_of(x, struct meson_overlay, base)
#define FRAC_16_16(mult, div) (((mult) << 16) / (div))
static int meson_overlay_atomic_check(struct drm_plane *plane,
struct drm_plane_state *state)
{
struct drm_crtc_state *crtc_state;
if (!state->crtc)
return 0;
crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc);
if (IS_ERR(crtc_state))
return PTR_ERR(crtc_state);
return drm_atomic_helper_check_plane_state(state, crtc_state,
FRAC_16_16(1, 5),
FRAC_16_16(5, 1),
true, true);
}
/* Takes a fixed 16.16 number and converts it to integer. */
static inline int64_t fixed16_to_int(int64_t value)
{
return value >> 16;
}
static const uint8_t skip_tab[6] = {
0x24, 0x04, 0x68, 0x48, 0x28, 0x08,
};
static void meson_overlay_get_vertical_phase(unsigned int ratio_y, int *phase,
int *repeat, bool interlace)
{
int offset_in = 0;
int offset_out = 0;
int repeat_skip = 0;
if (!interlace && ratio_y > (1 << 18))
offset_out = (1 * ratio_y) >> 10;
while ((offset_in + (4 << 8)) <= offset_out) {
repeat_skip++;
offset_in += 4 << 8;
}
*phase = (offset_out - offset_in) >> 2;
if (*phase > 0x100)
repeat_skip++;
*phase = *phase & 0xff;
if (repeat_skip > 5)
repeat_skip = 5;
*repeat = skip_tab[repeat_skip];
}
static void meson_overlay_setup_scaler_params(struct meson_drm *priv,
struct drm_plane *plane,
bool interlace_mode)
{
struct drm_crtc_state *crtc_state = priv->crtc->state;
int video_top, video_left, video_width, video_height;
struct drm_plane_state *state = plane->state;
unsigned int vd_start_lines, vd_end_lines;
unsigned int hd_start_lines, hd_end_lines;
unsigned int crtc_height, crtc_width;
unsigned int vsc_startp, vsc_endp;
unsigned int hsc_startp, hsc_endp;
unsigned int crop_top, crop_left;
int vphase, vphase_repeat_skip;
unsigned int ratio_x, ratio_y;
int temp_height, temp_width;
unsigned int w_in, h_in;
int temp, start, end;
if (!crtc_state) {
DRM_ERROR("Invalid crtc_state\n");
return;
}
crtc_height = crtc_state->mode.vdisplay;
crtc_width = crtc_state->mode.hdisplay;
w_in = fixed16_to_int(state->src_w);
h_in = fixed16_to_int(state->src_h);
crop_top = fixed16_to_int(state->src_x);
crop_left = fixed16_to_int(state->src_x);
video_top = state->crtc_y;
video_left = state->crtc_x;
video_width = state->crtc_w;
video_height = state->crtc_h;
DRM_DEBUG("crtc_width %d crtc_height %d interlace %d\n",
crtc_width, crtc_height, interlace_mode);
DRM_DEBUG("w_in %d h_in %d crop_top %d crop_left %d\n",
w_in, h_in, crop_top, crop_left);
DRM_DEBUG("video top %d left %d width %d height %d\n",
video_top, video_left, video_width, video_height);
ratio_x = (w_in << 18) / video_width;
ratio_y = (h_in << 18) / video_height;
if (ratio_x * video_width < (w_in << 18))
ratio_x++;
DRM_DEBUG("ratio x 0x%x y 0x%x\n", ratio_x, ratio_y);
meson_overlay_get_vertical_phase(ratio_y, &vphase, &vphase_repeat_skip,
interlace_mode);
DRM_DEBUG("vphase 0x%x skip %d\n", vphase, vphase_repeat_skip);
/* Vertical */
start = video_top + video_height / 2 - ((h_in << 17) / ratio_y);
end = (h_in << 18) / ratio_y + start - 1;
if (video_top < 0 && start < 0)
vd_start_lines = (-(start) * ratio_y) >> 18;
else if (start < video_top)
vd_start_lines = ((video_top - start) * ratio_y) >> 18;
else
vd_start_lines = 0;
if (video_top < 0)
temp_height = min_t(unsigned int,
video_top + video_height - 1,
crtc_height - 1);
else
temp_height = min_t(unsigned int,
video_top + video_height - 1,
crtc_height - 1) - video_top + 1;
temp = vd_start_lines + (temp_height * ratio_y >> 18);
vd_end_lines = (temp <= (h_in - 1)) ? temp : (h_in - 1);
vd_start_lines += crop_left;
vd_end_lines += crop_left;
/*
* TOFIX: Input frames are handled and scaled like progressive frames,
* proper handling of interlaced field input frames need to be figured
* out using the proper framebuffer flags set by userspace.
*/
if (interlace_mode) {
start >>= 1;
end >>= 1;
}
vsc_startp = max_t(int, start,
max_t(int, 0, video_top));
vsc_endp = min_t(int, end,
min_t(int, crtc_height - 1,
video_top + video_height - 1));
DRM_DEBUG("vsc startp %d endp %d start_lines %d end_lines %d\n",
vsc_startp, vsc_endp, vd_start_lines, vd_end_lines);
/* Horizontal */
start = video_left + video_width / 2 - ((w_in << 17) / ratio_x);
end = (w_in << 18) / ratio_x + start - 1;
if (video_left < 0 && start < 0)
hd_start_lines = (-(start) * ratio_x) >> 18;
else if (start < video_left)
hd_start_lines = ((video_left - start) * ratio_x) >> 18;
else
hd_start_lines = 0;
if (video_left < 0)
temp_width = min_t(unsigned int,
video_left + video_width - 1,
crtc_width - 1);
else
temp_width = min_t(unsigned int,
video_left + video_width - 1,
crtc_width - 1) - video_left + 1;
temp = hd_start_lines + (temp_width * ratio_x >> 18);
hd_end_lines = (temp <= (w_in - 1)) ? temp : (w_in - 1);
priv->viu.vpp_line_in_length = hd_end_lines - hd_start_lines + 1;
hsc_startp = max_t(int, start, max_t(int, 0, video_left));
hsc_endp = min_t(int, end, min_t(int, crtc_width - 1,
video_left + video_width - 1));
hd_start_lines += crop_top;
hd_end_lines += crop_top;
DRM_DEBUG("hsc startp %d endp %d start_lines %d end_lines %d\n",
hsc_startp, hsc_endp, hd_start_lines, hd_end_lines);
priv->viu.vpp_vsc_start_phase_step = ratio_y << 6;
priv->viu.vpp_vsc_ini_phase = vphase << 8;
priv->viu.vpp_vsc_phase_ctrl = (1 << 13) | (4 << 8) |
vphase_repeat_skip;
priv->viu.vd1_if0_luma_x0 = VD_X_START(hd_start_lines) |
VD_X_END(hd_end_lines);
priv->viu.vd1_if0_chroma_x0 = VD_X_START(hd_start_lines >> 1) |
VD_X_END(hd_end_lines >> 1);
priv->viu.viu_vd1_fmt_w =
VD_H_WIDTH(hd_end_lines - hd_start_lines + 1) |
VD_V_WIDTH(hd_end_lines/2 - hd_start_lines/2 + 1);
priv->viu.vd1_if0_luma_y0 = VD_Y_START(vd_start_lines) |
VD_Y_END(vd_end_lines);
priv->viu.vd1_if0_chroma_y0 = VD_Y_START(vd_start_lines >> 1) |
VD_Y_END(vd_end_lines >> 1);
priv->viu.vpp_pic_in_height = h_in;
priv->viu.vpp_postblend_vd1_h_start_end = VD_H_START(hsc_startp) |
VD_H_END(hsc_endp);
priv->viu.vpp_blend_vd2_h_start_end = VD_H_START(hd_start_lines) |
VD_H_END(hd_end_lines);
priv->viu.vpp_hsc_region12_startp = VD_REGION13_END(0) |
VD_REGION24_START(hsc_startp);
priv->viu.vpp_hsc_region34_startp =
VD_REGION13_END(hsc_startp) |
VD_REGION24_START(hsc_endp - hsc_startp);
priv->viu.vpp_hsc_region4_endp = hsc_endp - hsc_startp;
priv->viu.vpp_hsc_start_phase_step = ratio_x << 6;
priv->viu.vpp_hsc_region1_phase_slope = 0;
priv->viu.vpp_hsc_region3_phase_slope = 0;
priv->viu.vpp_hsc_phase_ctrl = (1 << 21) | (4 << 16);
priv->viu.vpp_line_in_length = hd_end_lines - hd_start_lines + 1;
priv->viu.vpp_preblend_h_size = hd_end_lines - hd_start_lines + 1;
priv->viu.vpp_postblend_vd1_v_start_end = VD_V_START(vsc_startp) |
VD_V_END(vsc_endp);
priv->viu.vpp_blend_vd2_v_start_end =
VD2_V_START((vd_end_lines + 1) >> 1) |
VD2_V_END(vd_end_lines);
priv->viu.vpp_vsc_region12_startp = 0;
priv->viu.vpp_vsc_region34_startp =
VD_REGION13_END(vsc_endp - vsc_startp) |
VD_REGION24_START(vsc_endp - vsc_startp);
priv->viu.vpp_vsc_region4_endp = vsc_endp - vsc_startp;
priv->viu.vpp_vsc_start_phase_step = ratio_y << 6;
}
static void meson_overlay_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct meson_overlay *meson_overlay = to_meson_overlay(plane);
struct drm_plane_state *state = plane->state;
struct drm_framebuffer *fb = state->fb;
struct meson_drm *priv = meson_overlay->priv;
struct drm_gem_cma_object *gem;
unsigned long flags;
bool interlace_mode;
DRM_DEBUG_DRIVER("\n");
/* Fallback is canvas provider is not available */
if (!priv->canvas) {
priv->canvas_id_vd1_0 = MESON_CANVAS_ID_VD1_0;
priv->canvas_id_vd1_1 = MESON_CANVAS_ID_VD1_1;
priv->canvas_id_vd1_2 = MESON_CANVAS_ID_VD1_2;
}
interlace_mode = state->crtc->mode.flags & DRM_MODE_FLAG_INTERLACE;
spin_lock_irqsave(&priv->drm->event_lock, flags);
priv->viu.vd1_if0_gen_reg = VD_URGENT_CHROMA |
VD_URGENT_LUMA |
VD_HOLD_LINES(9) |
VD_CHRO_RPT_LASTL_CTRL |
VD_ENABLE;
/* Setup scaler params */
meson_overlay_setup_scaler_params(priv, plane, interlace_mode);
priv->viu.vd1_if0_repeat_loop = 0;
priv->viu.vd1_if0_luma0_rpt_pat = interlace_mode ? 8 : 0;
priv->viu.vd1_if0_chroma0_rpt_pat = interlace_mode ? 8 : 0;
priv->viu.vd1_range_map_y = 0;
priv->viu.vd1_range_map_cb = 0;
priv->viu.vd1_range_map_cr = 0;
/* Default values for RGB888/YUV444 */
priv->viu.vd1_if0_gen_reg2 = 0;
priv->viu.viu_vd1_fmt_ctrl = 0;
switch (fb->format->format) {
/* TOFIX DRM_FORMAT_RGB888 should be supported */
case DRM_FORMAT_YUYV:
priv->viu.vd1_if0_gen_reg |= VD_BYTES_PER_PIXEL(1);
priv->viu.vd1_if0_canvas0 =
CANVAS_ADDR2(priv->canvas_id_vd1_0) |
CANVAS_ADDR1(priv->canvas_id_vd1_0) |
CANVAS_ADDR0(priv->canvas_id_vd1_0);
priv->viu.viu_vd1_fmt_ctrl = VD_HORZ_Y_C_RATIO(1) | /* /2 */
VD_HORZ_FMT_EN |
VD_VERT_RPT_LINE0 |
VD_VERT_INITIAL_PHASE(12) |
VD_VERT_PHASE_STEP(16) | /* /2 */
VD_VERT_FMT_EN;
break;
case DRM_FORMAT_NV12:
case DRM_FORMAT_NV21:
priv->viu.vd1_if0_gen_reg |= VD_SEPARATE_EN;
priv->viu.vd1_if0_canvas0 =
CANVAS_ADDR2(priv->canvas_id_vd1_1) |
CANVAS_ADDR1(priv->canvas_id_vd1_1) |
CANVAS_ADDR0(priv->canvas_id_vd1_0);
if (fb->format->format == DRM_FORMAT_NV12)
priv->viu.vd1_if0_gen_reg2 = VD_COLOR_MAP(1);
else
priv->viu.vd1_if0_gen_reg2 = VD_COLOR_MAP(2);
priv->viu.viu_vd1_fmt_ctrl = VD_HORZ_Y_C_RATIO(1) | /* /2 */
VD_HORZ_FMT_EN |
VD_VERT_RPT_LINE0 |
VD_VERT_INITIAL_PHASE(12) |
VD_VERT_PHASE_STEP(8) | /* /4 */
VD_VERT_FMT_EN;
break;
case DRM_FORMAT_YUV444:
case DRM_FORMAT_YUV422:
case DRM_FORMAT_YUV420:
case DRM_FORMAT_YUV411:
case DRM_FORMAT_YUV410:
priv->viu.vd1_if0_gen_reg |= VD_SEPARATE_EN;
priv->viu.vd1_if0_canvas0 =
CANVAS_ADDR2(priv->canvas_id_vd1_2) |
CANVAS_ADDR1(priv->canvas_id_vd1_1) |
CANVAS_ADDR0(priv->canvas_id_vd1_0);
switch (fb->format->format) {
case DRM_FORMAT_YUV422:
priv->viu.viu_vd1_fmt_ctrl =
VD_HORZ_Y_C_RATIO(1) | /* /2 */
VD_HORZ_FMT_EN |
VD_VERT_RPT_LINE0 |
VD_VERT_INITIAL_PHASE(12) |
VD_VERT_PHASE_STEP(16) | /* /2 */
VD_VERT_FMT_EN;
break;
case DRM_FORMAT_YUV420:
priv->viu.viu_vd1_fmt_ctrl =
VD_HORZ_Y_C_RATIO(1) | /* /2 */
VD_HORZ_FMT_EN |
VD_VERT_RPT_LINE0 |
VD_VERT_INITIAL_PHASE(12) |
VD_VERT_PHASE_STEP(8) | /* /4 */
VD_VERT_FMT_EN;
break;
case DRM_FORMAT_YUV411:
priv->viu.viu_vd1_fmt_ctrl =
VD_HORZ_Y_C_RATIO(2) | /* /4 */
VD_HORZ_FMT_EN |
VD_VERT_RPT_LINE0 |
VD_VERT_INITIAL_PHASE(12) |
VD_VERT_PHASE_STEP(16) | /* /2 */
VD_VERT_FMT_EN;
break;
case DRM_FORMAT_YUV410:
priv->viu.viu_vd1_fmt_ctrl =
VD_HORZ_Y_C_RATIO(2) | /* /4 */
VD_HORZ_FMT_EN |
VD_VERT_RPT_LINE0 |
VD_VERT_INITIAL_PHASE(12) |
VD_VERT_PHASE_STEP(8) | /* /4 */
VD_VERT_FMT_EN;
break;
}
break;
}
/* Update Canvas with buffer address */
priv->viu.vd1_planes = drm_format_num_planes(fb->format->format);
switch (priv->viu.vd1_planes) {
case 3:
gem = drm_fb_cma_get_gem_obj(fb, 2);
priv->viu.vd1_addr2 = gem->paddr + fb->offsets[2];
priv->viu.vd1_stride2 = fb->pitches[2];
priv->viu.vd1_height2 =
drm_format_plane_height(fb->height,
fb->format->format, 2);
DRM_DEBUG("plane 2 addr 0x%x stride %d height %d\n",
priv->viu.vd1_addr2,
priv->viu.vd1_stride2,
priv->viu.vd1_height2);
/* fallthrough */
case 2:
gem = drm_fb_cma_get_gem_obj(fb, 1);
priv->viu.vd1_addr1 = gem->paddr + fb->offsets[1];
priv->viu.vd1_stride1 = fb->pitches[1];
priv->viu.vd1_height1 =
drm_format_plane_height(fb->height,
fb->format->format, 1);
DRM_DEBUG("plane 1 addr 0x%x stride %d height %d\n",
priv->viu.vd1_addr1,
priv->viu.vd1_stride1,
priv->viu.vd1_height1);
/* fallthrough */
case 1:
gem = drm_fb_cma_get_gem_obj(fb, 0);
priv->viu.vd1_addr0 = gem->paddr + fb->offsets[0];
priv->viu.vd1_stride0 = fb->pitches[0];
priv->viu.vd1_height0 =
drm_format_plane_height(fb->height,
fb->format->format, 0);
DRM_DEBUG("plane 0 addr 0x%x stride %d height %d\n",
priv->viu.vd1_addr0,
priv->viu.vd1_stride0,
priv->viu.vd1_height0);
}
priv->viu.vd1_enabled = true;
spin_unlock_irqrestore(&priv->drm->event_lock, flags);
DRM_DEBUG_DRIVER("\n");
}
static void meson_overlay_atomic_disable(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct meson_overlay *meson_overlay = to_meson_overlay(plane);
struct meson_drm *priv = meson_overlay->priv;
DRM_DEBUG_DRIVER("\n");
priv->viu.vd1_enabled = false;
/* Disable VD1 */
writel_bits_relaxed(VPP_VD1_POSTBLEND | VPP_VD1_PREBLEND, 0,
priv->io_base + _REG(VPP_MISC));
}
static const struct drm_plane_helper_funcs meson_overlay_helper_funcs = {
.atomic_check = meson_overlay_atomic_check,
.atomic_disable = meson_overlay_atomic_disable,
.atomic_update = meson_overlay_atomic_update,
.prepare_fb = drm_gem_fb_prepare_fb,
};
static const struct drm_plane_funcs meson_overlay_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = drm_plane_cleanup,
.reset = drm_atomic_helper_plane_reset,
.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
};
static const uint32_t supported_drm_formats[] = {
DRM_FORMAT_YUYV,
DRM_FORMAT_NV12,
DRM_FORMAT_NV21,
DRM_FORMAT_YUV444,
DRM_FORMAT_YUV422,
DRM_FORMAT_YUV420,
DRM_FORMAT_YUV411,
DRM_FORMAT_YUV410,
};
int meson_overlay_create(struct meson_drm *priv)
{
struct meson_overlay *meson_overlay;
struct drm_plane *plane;
DRM_DEBUG_DRIVER("\n");
meson_overlay = devm_kzalloc(priv->drm->dev, sizeof(*meson_overlay),
GFP_KERNEL);
if (!meson_overlay)
return -ENOMEM;
meson_overlay->priv = priv;
plane = &meson_overlay->base;
drm_universal_plane_init(priv->drm, plane, 0xFF,
&meson_overlay_funcs,
supported_drm_formats,
ARRAY_SIZE(supported_drm_formats),
NULL,
DRM_PLANE_TYPE_OVERLAY, "meson_overlay_plane");
drm_plane_helper_add(plane, &meson_overlay_helper_funcs);
priv->overlay_plane = plane;
DRM_DEBUG_DRIVER("\n");
return 0;
}
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