linux/drivers/gpu/drm/i915/intel_ddi.c

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/*
* Copyright © 2012 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:
* Eugeni Dodonov <eugeni.dodonov@intel.com>
*
*/
#include "i915_drv.h"
#include "intel_drv.h"
/* HDMI/DVI modes ignore everything but the last 2 items. So we share
* them for both DP and FDI transports, allowing those ports to
* automatically adapt to HDMI connections as well
*/
static const u32 hsw_ddi_translations_dp[] = {
0x00FFFFFF, 0x0006000E, /* DP parameters */
0x00D75FFF, 0x0005000A,
0x00C30FFF, 0x00040006,
0x80AAAFFF, 0x000B0000,
0x00FFFFFF, 0x0005000A,
0x00D75FFF, 0x000C0004,
0x80C30FFF, 0x000B0000,
0x00FFFFFF, 0x00040006,
0x80D75FFF, 0x000B0000,
0x00FFFFFF, 0x00040006 /* HDMI parameters */
};
static const u32 hsw_ddi_translations_fdi[] = {
0x00FFFFFF, 0x0007000E, /* FDI parameters */
0x00D75FFF, 0x000F000A,
0x00C30FFF, 0x00060006,
0x00AAAFFF, 0x001E0000,
0x00FFFFFF, 0x000F000A,
0x00D75FFF, 0x00160004,
0x00C30FFF, 0x001E0000,
0x00FFFFFF, 0x00060006,
0x00D75FFF, 0x001E0000,
0x00FFFFFF, 0x00040006 /* HDMI parameters */
};
static enum port intel_ddi_get_encoder_port(struct intel_encoder *intel_encoder)
{
struct drm_encoder *encoder = &intel_encoder->base;
int type = intel_encoder->type;
if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP ||
type == INTEL_OUTPUT_HDMI || type == INTEL_OUTPUT_UNKNOWN) {
struct intel_digital_port *intel_dig_port =
enc_to_dig_port(encoder);
return intel_dig_port->port;
} else if (type == INTEL_OUTPUT_ANALOG) {
return PORT_E;
} else {
DRM_ERROR("Invalid DDI encoder type %d\n", type);
BUG();
}
}
/* On Haswell, DDI port buffers must be programmed with correct values
* in advance. The buffer values are different for FDI and DP modes,
* but the HDMI/DVI fields are shared among those. So we program the DDI
* in either FDI or DP modes only, as HDMI connections will work with both
* of those
*/
void intel_prepare_ddi_buffers(struct drm_device *dev, enum port port, bool use_fdi_mode)
{
struct drm_i915_private *dev_priv = dev->dev_private;
u32 reg;
int i;
const u32 *ddi_translations = ((use_fdi_mode) ?
hsw_ddi_translations_fdi :
hsw_ddi_translations_dp);
DRM_DEBUG_DRIVER("Initializing DDI buffers for port %c in %s mode\n",
port_name(port),
use_fdi_mode ? "FDI" : "DP");
WARN((use_fdi_mode && (port != PORT_E)),
"Programming port %c in FDI mode, this probably will not work.\n",
port_name(port));
for (i=0, reg=DDI_BUF_TRANS(port); i < ARRAY_SIZE(hsw_ddi_translations_fdi); i++) {
I915_WRITE(reg, ddi_translations[i]);
reg += 4;
}
}
/* Program DDI buffers translations for DP. By default, program ports A-D in DP
* mode and port E for FDI.
*/
void intel_prepare_ddi(struct drm_device *dev)
{
int port;
if (IS_HASWELL(dev)) {
for (port = PORT_A; port < PORT_E; port++)
intel_prepare_ddi_buffers(dev, port, false);
/* DDI E is the suggested one to work in FDI mode, so program is as such by
* default. It will have to be re-programmed in case a digital DP output
* will be detected on it
*/
intel_prepare_ddi_buffers(dev, PORT_E, true);
}
}
static const long hsw_ddi_buf_ctl_values[] = {
DDI_BUF_EMP_400MV_0DB_HSW,
DDI_BUF_EMP_400MV_3_5DB_HSW,
DDI_BUF_EMP_400MV_6DB_HSW,
DDI_BUF_EMP_400MV_9_5DB_HSW,
DDI_BUF_EMP_600MV_0DB_HSW,
DDI_BUF_EMP_600MV_3_5DB_HSW,
DDI_BUF_EMP_600MV_6DB_HSW,
DDI_BUF_EMP_800MV_0DB_HSW,
DDI_BUF_EMP_800MV_3_5DB_HSW
};
/* Starting with Haswell, different DDI ports can work in FDI mode for
* connection to the PCH-located connectors. For this, it is necessary to train
* both the DDI port and PCH receiver for the desired DDI buffer settings.
*
* The recommended port to work in FDI mode is DDI E, which we use here. Also,
* please note that when FDI mode is active on DDI E, it shares 2 lines with
* DDI A (which is used for eDP)
*/
void hsw_fdi_link_train(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
drm/i915: fix Haswell FDI link training code This commit makes hsw_fdi_link_train responsible for implementing everything described in the "Enable and train FDI" section from the Hawell CRT mode set sequence documentation. We completely rewrite hsw_fdi_link_train to match the documentation and we also call it in the right place. This patch was initially sent as a series of tiny patches fixing every little problem of the function, but since there were too many patches fixing the same function it got a little difficult to get the "big picture" of how the function would be in the end, so here we amended all the patches into a single big patch fixing the whole function. Problems we fixed: 1 - Train Haswell FDI at the right time. We need to train the FDI before enabling the pipes and planes, so we're moving the call from lpt_pch_enable to haswell_crtc_enable directly. We are also removing ironlake_fdi_pll_enable since the PLL enablement on Haswell is completely different and is also done during the link training steps. 2 - Use the right FDI_RX_CTL register on Haswell There is only one PCH transcoder, so it's always _FDI_RXA_CTL. Using "pipe" here is wrong. 3 - Don't rely on DDI_BUF_CTL previous values Just set the bits we want, everything else is zero. Also POSTING_READ the register before sleeping. 4 - Program the FDI RX TUSIZE register on hsw_fdi_link_train According to the mode set sequence documentation, this is the right place. According to the FDI_RX_TUSIZE register description, this is the value we should set. Also remove the code that sets this register from the old location: lpt_pch_enable. 5 - Properly program FDI_RX_MISC pwrdn lane values on HSW 6 - Wait only 35us for the FDI link training First we wait 30us for the FDI receiver lane calibration, then we wait 5us for the FDI auto training time. 7 - Remove an useless indentation level on hsw_fdi_link_train We already "break" when the link training succeeds. 8 - Disable FDI_RX_ENABLE, not FDI_RX_PLL_ENABLE When we fail the training. 9 - Change Haswell FDI link training error messages We shouldn't call DRM_ERROR when still looping through voltage levels since this is expected and not really a failure. So in this commit we adjust the error path to only DRM_ERROR when we really fail after trying everything. While at it, replace DRM_DEBUG_DRIVER with DRM_DEBUG_KMS since it's what we use everywhere. 10 - Try each voltage twice at hsw_fdi_link_train Now with Daniel Vetter's suggestion to use "/2" instead of ">>1". Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> [danvet: Applied tiny bikesheds: - mention in comment that we test each voltage/emphasis level twice - realing arguments of the only untouched reg write, it spilled over the 80 char limit ...] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-11-01 23:00:59 +00:00
u32 temp, i, rx_ctl_val;
drm/i915: fix Haswell FDI link training code This commit makes hsw_fdi_link_train responsible for implementing everything described in the "Enable and train FDI" section from the Hawell CRT mode set sequence documentation. We completely rewrite hsw_fdi_link_train to match the documentation and we also call it in the right place. This patch was initially sent as a series of tiny patches fixing every little problem of the function, but since there were too many patches fixing the same function it got a little difficult to get the "big picture" of how the function would be in the end, so here we amended all the patches into a single big patch fixing the whole function. Problems we fixed: 1 - Train Haswell FDI at the right time. We need to train the FDI before enabling the pipes and planes, so we're moving the call from lpt_pch_enable to haswell_crtc_enable directly. We are also removing ironlake_fdi_pll_enable since the PLL enablement on Haswell is completely different and is also done during the link training steps. 2 - Use the right FDI_RX_CTL register on Haswell There is only one PCH transcoder, so it's always _FDI_RXA_CTL. Using "pipe" here is wrong. 3 - Don't rely on DDI_BUF_CTL previous values Just set the bits we want, everything else is zero. Also POSTING_READ the register before sleeping. 4 - Program the FDI RX TUSIZE register on hsw_fdi_link_train According to the mode set sequence documentation, this is the right place. According to the FDI_RX_TUSIZE register description, this is the value we should set. Also remove the code that sets this register from the old location: lpt_pch_enable. 5 - Properly program FDI_RX_MISC pwrdn lane values on HSW 6 - Wait only 35us for the FDI link training First we wait 30us for the FDI receiver lane calibration, then we wait 5us for the FDI auto training time. 7 - Remove an useless indentation level on hsw_fdi_link_train We already "break" when the link training succeeds. 8 - Disable FDI_RX_ENABLE, not FDI_RX_PLL_ENABLE When we fail the training. 9 - Change Haswell FDI link training error messages We shouldn't call DRM_ERROR when still looping through voltage levels since this is expected and not really a failure. So in this commit we adjust the error path to only DRM_ERROR when we really fail after trying everything. While at it, replace DRM_DEBUG_DRIVER with DRM_DEBUG_KMS since it's what we use everywhere. 10 - Try each voltage twice at hsw_fdi_link_train Now with Daniel Vetter's suggestion to use "/2" instead of ">>1". Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> [danvet: Applied tiny bikesheds: - mention in comment that we test each voltage/emphasis level twice - realing arguments of the only untouched reg write, it spilled over the 80 char limit ...] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-11-01 23:00:59 +00:00
/* Set the FDI_RX_MISC pwrdn lanes and the 2 workarounds listed at the
* mode set "sequence for CRT port" document:
* - TP1 to TP2 time with the default value
* - FDI delay to 90h
*/
I915_WRITE(_FDI_RXA_MISC, FDI_RX_PWRDN_LANE1_VAL(2) |
FDI_RX_PWRDN_LANE0_VAL(2) |
FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
/* Enable the PCH Receiver FDI PLL */
rx_ctl_val = FDI_RX_PLL_ENABLE | FDI_RX_ENHANCE_FRAME_ENABLE |
((intel_crtc->fdi_lanes - 1) << 19);
I915_WRITE(_FDI_RXA_CTL, rx_ctl_val);
POSTING_READ(_FDI_RXA_CTL);
udelay(220);
/* Switch from Rawclk to PCDclk */
rx_ctl_val |= FDI_PCDCLK;
I915_WRITE(_FDI_RXA_CTL, rx_ctl_val);
/* Configure Port Clock Select */
I915_WRITE(PORT_CLK_SEL(PORT_E), intel_crtc->ddi_pll_sel);
/* Start the training iterating through available voltages and emphasis,
* testing each value twice. */
for (i = 0; i < ARRAY_SIZE(hsw_ddi_buf_ctl_values) * 2; i++) {
/* Configure DP_TP_CTL with auto-training */
I915_WRITE(DP_TP_CTL(PORT_E),
DP_TP_CTL_FDI_AUTOTRAIN |
DP_TP_CTL_ENHANCED_FRAME_ENABLE |
DP_TP_CTL_LINK_TRAIN_PAT1 |
DP_TP_CTL_ENABLE);
/* Configure and enable DDI_BUF_CTL for DDI E with next voltage */
I915_WRITE(DDI_BUF_CTL(PORT_E),
drm/i915: fix Haswell FDI link training code This commit makes hsw_fdi_link_train responsible for implementing everything described in the "Enable and train FDI" section from the Hawell CRT mode set sequence documentation. We completely rewrite hsw_fdi_link_train to match the documentation and we also call it in the right place. This patch was initially sent as a series of tiny patches fixing every little problem of the function, but since there were too many patches fixing the same function it got a little difficult to get the "big picture" of how the function would be in the end, so here we amended all the patches into a single big patch fixing the whole function. Problems we fixed: 1 - Train Haswell FDI at the right time. We need to train the FDI before enabling the pipes and planes, so we're moving the call from lpt_pch_enable to haswell_crtc_enable directly. We are also removing ironlake_fdi_pll_enable since the PLL enablement on Haswell is completely different and is also done during the link training steps. 2 - Use the right FDI_RX_CTL register on Haswell There is only one PCH transcoder, so it's always _FDI_RXA_CTL. Using "pipe" here is wrong. 3 - Don't rely on DDI_BUF_CTL previous values Just set the bits we want, everything else is zero. Also POSTING_READ the register before sleeping. 4 - Program the FDI RX TUSIZE register on hsw_fdi_link_train According to the mode set sequence documentation, this is the right place. According to the FDI_RX_TUSIZE register description, this is the value we should set. Also remove the code that sets this register from the old location: lpt_pch_enable. 5 - Properly program FDI_RX_MISC pwrdn lane values on HSW 6 - Wait only 35us for the FDI link training First we wait 30us for the FDI receiver lane calibration, then we wait 5us for the FDI auto training time. 7 - Remove an useless indentation level on hsw_fdi_link_train We already "break" when the link training succeeds. 8 - Disable FDI_RX_ENABLE, not FDI_RX_PLL_ENABLE When we fail the training. 9 - Change Haswell FDI link training error messages We shouldn't call DRM_ERROR when still looping through voltage levels since this is expected and not really a failure. So in this commit we adjust the error path to only DRM_ERROR when we really fail after trying everything. While at it, replace DRM_DEBUG_DRIVER with DRM_DEBUG_KMS since it's what we use everywhere. 10 - Try each voltage twice at hsw_fdi_link_train Now with Daniel Vetter's suggestion to use "/2" instead of ">>1". Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> [danvet: Applied tiny bikesheds: - mention in comment that we test each voltage/emphasis level twice - realing arguments of the only untouched reg write, it spilled over the 80 char limit ...] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-11-01 23:00:59 +00:00
DDI_BUF_CTL_ENABLE |
((intel_crtc->fdi_lanes - 1) << 1) |
hsw_ddi_buf_ctl_values[i / 2]);
POSTING_READ(DDI_BUF_CTL(PORT_E));
udelay(600);
drm/i915: fix Haswell FDI link training code This commit makes hsw_fdi_link_train responsible for implementing everything described in the "Enable and train FDI" section from the Hawell CRT mode set sequence documentation. We completely rewrite hsw_fdi_link_train to match the documentation and we also call it in the right place. This patch was initially sent as a series of tiny patches fixing every little problem of the function, but since there were too many patches fixing the same function it got a little difficult to get the "big picture" of how the function would be in the end, so here we amended all the patches into a single big patch fixing the whole function. Problems we fixed: 1 - Train Haswell FDI at the right time. We need to train the FDI before enabling the pipes and planes, so we're moving the call from lpt_pch_enable to haswell_crtc_enable directly. We are also removing ironlake_fdi_pll_enable since the PLL enablement on Haswell is completely different and is also done during the link training steps. 2 - Use the right FDI_RX_CTL register on Haswell There is only one PCH transcoder, so it's always _FDI_RXA_CTL. Using "pipe" here is wrong. 3 - Don't rely on DDI_BUF_CTL previous values Just set the bits we want, everything else is zero. Also POSTING_READ the register before sleeping. 4 - Program the FDI RX TUSIZE register on hsw_fdi_link_train According to the mode set sequence documentation, this is the right place. According to the FDI_RX_TUSIZE register description, this is the value we should set. Also remove the code that sets this register from the old location: lpt_pch_enable. 5 - Properly program FDI_RX_MISC pwrdn lane values on HSW 6 - Wait only 35us for the FDI link training First we wait 30us for the FDI receiver lane calibration, then we wait 5us for the FDI auto training time. 7 - Remove an useless indentation level on hsw_fdi_link_train We already "break" when the link training succeeds. 8 - Disable FDI_RX_ENABLE, not FDI_RX_PLL_ENABLE When we fail the training. 9 - Change Haswell FDI link training error messages We shouldn't call DRM_ERROR when still looping through voltage levels since this is expected and not really a failure. So in this commit we adjust the error path to only DRM_ERROR when we really fail after trying everything. While at it, replace DRM_DEBUG_DRIVER with DRM_DEBUG_KMS since it's what we use everywhere. 10 - Try each voltage twice at hsw_fdi_link_train Now with Daniel Vetter's suggestion to use "/2" instead of ">>1". Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> [danvet: Applied tiny bikesheds: - mention in comment that we test each voltage/emphasis level twice - realing arguments of the only untouched reg write, it spilled over the 80 char limit ...] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-11-01 23:00:59 +00:00
/* Program PCH FDI Receiver TU */
I915_WRITE(_FDI_RXA_TUSIZE1, TU_SIZE(64));
/* Enable PCH FDI Receiver with auto-training */
rx_ctl_val |= FDI_RX_ENABLE | FDI_LINK_TRAIN_AUTO;
I915_WRITE(_FDI_RXA_CTL, rx_ctl_val);
POSTING_READ(_FDI_RXA_CTL);
/* Wait for FDI receiver lane calibration */
udelay(30);
/* Unset FDI_RX_MISC pwrdn lanes */
temp = I915_READ(_FDI_RXA_MISC);
temp &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK);
I915_WRITE(_FDI_RXA_MISC, temp);
POSTING_READ(_FDI_RXA_MISC);
/* Wait for FDI auto training time */
udelay(5);
temp = I915_READ(DP_TP_STATUS(PORT_E));
if (temp & DP_TP_STATUS_AUTOTRAIN_DONE) {
drm/i915: fix Haswell FDI link training code This commit makes hsw_fdi_link_train responsible for implementing everything described in the "Enable and train FDI" section from the Hawell CRT mode set sequence documentation. We completely rewrite hsw_fdi_link_train to match the documentation and we also call it in the right place. This patch was initially sent as a series of tiny patches fixing every little problem of the function, but since there were too many patches fixing the same function it got a little difficult to get the "big picture" of how the function would be in the end, so here we amended all the patches into a single big patch fixing the whole function. Problems we fixed: 1 - Train Haswell FDI at the right time. We need to train the FDI before enabling the pipes and planes, so we're moving the call from lpt_pch_enable to haswell_crtc_enable directly. We are also removing ironlake_fdi_pll_enable since the PLL enablement on Haswell is completely different and is also done during the link training steps. 2 - Use the right FDI_RX_CTL register on Haswell There is only one PCH transcoder, so it's always _FDI_RXA_CTL. Using "pipe" here is wrong. 3 - Don't rely on DDI_BUF_CTL previous values Just set the bits we want, everything else is zero. Also POSTING_READ the register before sleeping. 4 - Program the FDI RX TUSIZE register on hsw_fdi_link_train According to the mode set sequence documentation, this is the right place. According to the FDI_RX_TUSIZE register description, this is the value we should set. Also remove the code that sets this register from the old location: lpt_pch_enable. 5 - Properly program FDI_RX_MISC pwrdn lane values on HSW 6 - Wait only 35us for the FDI link training First we wait 30us for the FDI receiver lane calibration, then we wait 5us for the FDI auto training time. 7 - Remove an useless indentation level on hsw_fdi_link_train We already "break" when the link training succeeds. 8 - Disable FDI_RX_ENABLE, not FDI_RX_PLL_ENABLE When we fail the training. 9 - Change Haswell FDI link training error messages We shouldn't call DRM_ERROR when still looping through voltage levels since this is expected and not really a failure. So in this commit we adjust the error path to only DRM_ERROR when we really fail after trying everything. While at it, replace DRM_DEBUG_DRIVER with DRM_DEBUG_KMS since it's what we use everywhere. 10 - Try each voltage twice at hsw_fdi_link_train Now with Daniel Vetter's suggestion to use "/2" instead of ">>1". Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> [danvet: Applied tiny bikesheds: - mention in comment that we test each voltage/emphasis level twice - realing arguments of the only untouched reg write, it spilled over the 80 char limit ...] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-11-01 23:00:59 +00:00
DRM_DEBUG_KMS("FDI link training done on step %d\n", i);
/* Enable normal pixel sending for FDI */
I915_WRITE(DP_TP_CTL(PORT_E),
drm/i915: fix Haswell FDI link training code This commit makes hsw_fdi_link_train responsible for implementing everything described in the "Enable and train FDI" section from the Hawell CRT mode set sequence documentation. We completely rewrite hsw_fdi_link_train to match the documentation and we also call it in the right place. This patch was initially sent as a series of tiny patches fixing every little problem of the function, but since there were too many patches fixing the same function it got a little difficult to get the "big picture" of how the function would be in the end, so here we amended all the patches into a single big patch fixing the whole function. Problems we fixed: 1 - Train Haswell FDI at the right time. We need to train the FDI before enabling the pipes and planes, so we're moving the call from lpt_pch_enable to haswell_crtc_enable directly. We are also removing ironlake_fdi_pll_enable since the PLL enablement on Haswell is completely different and is also done during the link training steps. 2 - Use the right FDI_RX_CTL register on Haswell There is only one PCH transcoder, so it's always _FDI_RXA_CTL. Using "pipe" here is wrong. 3 - Don't rely on DDI_BUF_CTL previous values Just set the bits we want, everything else is zero. Also POSTING_READ the register before sleeping. 4 - Program the FDI RX TUSIZE register on hsw_fdi_link_train According to the mode set sequence documentation, this is the right place. According to the FDI_RX_TUSIZE register description, this is the value we should set. Also remove the code that sets this register from the old location: lpt_pch_enable. 5 - Properly program FDI_RX_MISC pwrdn lane values on HSW 6 - Wait only 35us for the FDI link training First we wait 30us for the FDI receiver lane calibration, then we wait 5us for the FDI auto training time. 7 - Remove an useless indentation level on hsw_fdi_link_train We already "break" when the link training succeeds. 8 - Disable FDI_RX_ENABLE, not FDI_RX_PLL_ENABLE When we fail the training. 9 - Change Haswell FDI link training error messages We shouldn't call DRM_ERROR when still looping through voltage levels since this is expected and not really a failure. So in this commit we adjust the error path to only DRM_ERROR when we really fail after trying everything. While at it, replace DRM_DEBUG_DRIVER with DRM_DEBUG_KMS since it's what we use everywhere. 10 - Try each voltage twice at hsw_fdi_link_train Now with Daniel Vetter's suggestion to use "/2" instead of ">>1". Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> [danvet: Applied tiny bikesheds: - mention in comment that we test each voltage/emphasis level twice - realing arguments of the only untouched reg write, it spilled over the 80 char limit ...] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-11-01 23:00:59 +00:00
DP_TP_CTL_FDI_AUTOTRAIN |
DP_TP_CTL_LINK_TRAIN_NORMAL |
DP_TP_CTL_ENHANCED_FRAME_ENABLE |
DP_TP_CTL_ENABLE);
drm/i915: fix Haswell FDI link training code This commit makes hsw_fdi_link_train responsible for implementing everything described in the "Enable and train FDI" section from the Hawell CRT mode set sequence documentation. We completely rewrite hsw_fdi_link_train to match the documentation and we also call it in the right place. This patch was initially sent as a series of tiny patches fixing every little problem of the function, but since there were too many patches fixing the same function it got a little difficult to get the "big picture" of how the function would be in the end, so here we amended all the patches into a single big patch fixing the whole function. Problems we fixed: 1 - Train Haswell FDI at the right time. We need to train the FDI before enabling the pipes and planes, so we're moving the call from lpt_pch_enable to haswell_crtc_enable directly. We are also removing ironlake_fdi_pll_enable since the PLL enablement on Haswell is completely different and is also done during the link training steps. 2 - Use the right FDI_RX_CTL register on Haswell There is only one PCH transcoder, so it's always _FDI_RXA_CTL. Using "pipe" here is wrong. 3 - Don't rely on DDI_BUF_CTL previous values Just set the bits we want, everything else is zero. Also POSTING_READ the register before sleeping. 4 - Program the FDI RX TUSIZE register on hsw_fdi_link_train According to the mode set sequence documentation, this is the right place. According to the FDI_RX_TUSIZE register description, this is the value we should set. Also remove the code that sets this register from the old location: lpt_pch_enable. 5 - Properly program FDI_RX_MISC pwrdn lane values on HSW 6 - Wait only 35us for the FDI link training First we wait 30us for the FDI receiver lane calibration, then we wait 5us for the FDI auto training time. 7 - Remove an useless indentation level on hsw_fdi_link_train We already "break" when the link training succeeds. 8 - Disable FDI_RX_ENABLE, not FDI_RX_PLL_ENABLE When we fail the training. 9 - Change Haswell FDI link training error messages We shouldn't call DRM_ERROR when still looping through voltage levels since this is expected and not really a failure. So in this commit we adjust the error path to only DRM_ERROR when we really fail after trying everything. While at it, replace DRM_DEBUG_DRIVER with DRM_DEBUG_KMS since it's what we use everywhere. 10 - Try each voltage twice at hsw_fdi_link_train Now with Daniel Vetter's suggestion to use "/2" instead of ">>1". Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> [danvet: Applied tiny bikesheds: - mention in comment that we test each voltage/emphasis level twice - realing arguments of the only untouched reg write, it spilled over the 80 char limit ...] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-11-01 23:00:59 +00:00
return;
}
drm/i915: fix Haswell FDI link training code This commit makes hsw_fdi_link_train responsible for implementing everything described in the "Enable and train FDI" section from the Hawell CRT mode set sequence documentation. We completely rewrite hsw_fdi_link_train to match the documentation and we also call it in the right place. This patch was initially sent as a series of tiny patches fixing every little problem of the function, but since there were too many patches fixing the same function it got a little difficult to get the "big picture" of how the function would be in the end, so here we amended all the patches into a single big patch fixing the whole function. Problems we fixed: 1 - Train Haswell FDI at the right time. We need to train the FDI before enabling the pipes and planes, so we're moving the call from lpt_pch_enable to haswell_crtc_enable directly. We are also removing ironlake_fdi_pll_enable since the PLL enablement on Haswell is completely different and is also done during the link training steps. 2 - Use the right FDI_RX_CTL register on Haswell There is only one PCH transcoder, so it's always _FDI_RXA_CTL. Using "pipe" here is wrong. 3 - Don't rely on DDI_BUF_CTL previous values Just set the bits we want, everything else is zero. Also POSTING_READ the register before sleeping. 4 - Program the FDI RX TUSIZE register on hsw_fdi_link_train According to the mode set sequence documentation, this is the right place. According to the FDI_RX_TUSIZE register description, this is the value we should set. Also remove the code that sets this register from the old location: lpt_pch_enable. 5 - Properly program FDI_RX_MISC pwrdn lane values on HSW 6 - Wait only 35us for the FDI link training First we wait 30us for the FDI receiver lane calibration, then we wait 5us for the FDI auto training time. 7 - Remove an useless indentation level on hsw_fdi_link_train We already "break" when the link training succeeds. 8 - Disable FDI_RX_ENABLE, not FDI_RX_PLL_ENABLE When we fail the training. 9 - Change Haswell FDI link training error messages We shouldn't call DRM_ERROR when still looping through voltage levels since this is expected and not really a failure. So in this commit we adjust the error path to only DRM_ERROR when we really fail after trying everything. While at it, replace DRM_DEBUG_DRIVER with DRM_DEBUG_KMS since it's what we use everywhere. 10 - Try each voltage twice at hsw_fdi_link_train Now with Daniel Vetter's suggestion to use "/2" instead of ">>1". Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> [danvet: Applied tiny bikesheds: - mention in comment that we test each voltage/emphasis level twice - realing arguments of the only untouched reg write, it spilled over the 80 char limit ...] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-11-01 23:00:59 +00:00
/* Disable DP_TP_CTL and FDI_RX_CTL and retry */
I915_WRITE(DP_TP_CTL(PORT_E),
I915_READ(DP_TP_CTL(PORT_E)) & ~DP_TP_CTL_ENABLE);
rx_ctl_val &= ~FDI_RX_ENABLE;
I915_WRITE(_FDI_RXA_CTL, rx_ctl_val);
/* Reset FDI_RX_MISC pwrdn lanes */
temp = I915_READ(_FDI_RXA_MISC);
temp &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK);
temp |= FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2);
I915_WRITE(_FDI_RXA_MISC, temp);
}
drm/i915: fix Haswell FDI link training code This commit makes hsw_fdi_link_train responsible for implementing everything described in the "Enable and train FDI" section from the Hawell CRT mode set sequence documentation. We completely rewrite hsw_fdi_link_train to match the documentation and we also call it in the right place. This patch was initially sent as a series of tiny patches fixing every little problem of the function, but since there were too many patches fixing the same function it got a little difficult to get the "big picture" of how the function would be in the end, so here we amended all the patches into a single big patch fixing the whole function. Problems we fixed: 1 - Train Haswell FDI at the right time. We need to train the FDI before enabling the pipes and planes, so we're moving the call from lpt_pch_enable to haswell_crtc_enable directly. We are also removing ironlake_fdi_pll_enable since the PLL enablement on Haswell is completely different and is also done during the link training steps. 2 - Use the right FDI_RX_CTL register on Haswell There is only one PCH transcoder, so it's always _FDI_RXA_CTL. Using "pipe" here is wrong. 3 - Don't rely on DDI_BUF_CTL previous values Just set the bits we want, everything else is zero. Also POSTING_READ the register before sleeping. 4 - Program the FDI RX TUSIZE register on hsw_fdi_link_train According to the mode set sequence documentation, this is the right place. According to the FDI_RX_TUSIZE register description, this is the value we should set. Also remove the code that sets this register from the old location: lpt_pch_enable. 5 - Properly program FDI_RX_MISC pwrdn lane values on HSW 6 - Wait only 35us for the FDI link training First we wait 30us for the FDI receiver lane calibration, then we wait 5us for the FDI auto training time. 7 - Remove an useless indentation level on hsw_fdi_link_train We already "break" when the link training succeeds. 8 - Disable FDI_RX_ENABLE, not FDI_RX_PLL_ENABLE When we fail the training. 9 - Change Haswell FDI link training error messages We shouldn't call DRM_ERROR when still looping through voltage levels since this is expected and not really a failure. So in this commit we adjust the error path to only DRM_ERROR when we really fail after trying everything. While at it, replace DRM_DEBUG_DRIVER with DRM_DEBUG_KMS since it's what we use everywhere. 10 - Try each voltage twice at hsw_fdi_link_train Now with Daniel Vetter's suggestion to use "/2" instead of ">>1". Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> [danvet: Applied tiny bikesheds: - mention in comment that we test each voltage/emphasis level twice - realing arguments of the only untouched reg write, it spilled over the 80 char limit ...] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-11-01 23:00:59 +00:00
DRM_ERROR("FDI link training failed!\n");
}
/* WRPLL clock dividers */
struct wrpll_tmds_clock {
u32 clock;
u16 p; /* Post divider */
u16 n2; /* Feedback divider */
u16 r2; /* Reference divider */
};
/* Table of matching values for WRPLL clocks programming for each frequency.
* The code assumes this table is sorted. */
static const struct wrpll_tmds_clock wrpll_tmds_clock_table[] = {
{19750, 38, 25, 18},
{20000, 48, 32, 18},
{21000, 36, 21, 15},
{21912, 42, 29, 17},
{22000, 36, 22, 15},
{23000, 36, 23, 15},
{23500, 40, 40, 23},
{23750, 26, 16, 14},
{24000, 36, 24, 15},
{25000, 36, 25, 15},
{25175, 26, 40, 33},
{25200, 30, 21, 15},
{26000, 36, 26, 15},
{27000, 30, 21, 14},
{27027, 18, 100, 111},
{27500, 30, 29, 19},
{28000, 34, 30, 17},
{28320, 26, 30, 22},
{28322, 32, 42, 25},
{28750, 24, 23, 18},
{29000, 30, 29, 18},
{29750, 32, 30, 17},
{30000, 30, 25, 15},
{30750, 30, 41, 24},
{31000, 30, 31, 18},
{31500, 30, 28, 16},
{32000, 30, 32, 18},
{32500, 28, 32, 19},
{33000, 24, 22, 15},
{34000, 28, 30, 17},
{35000, 26, 32, 19},
{35500, 24, 30, 19},
{36000, 26, 26, 15},
{36750, 26, 46, 26},
{37000, 24, 23, 14},
{37762, 22, 40, 26},
{37800, 20, 21, 15},
{38000, 24, 27, 16},
{38250, 24, 34, 20},
{39000, 24, 26, 15},
{40000, 24, 32, 18},
{40500, 20, 21, 14},
{40541, 22, 147, 89},
{40750, 18, 19, 14},
{41000, 16, 17, 14},
{41500, 22, 44, 26},
{41540, 22, 44, 26},
{42000, 18, 21, 15},
{42500, 22, 45, 26},
{43000, 20, 43, 27},
{43163, 20, 24, 15},
{44000, 18, 22, 15},
{44900, 20, 108, 65},
{45000, 20, 25, 15},
{45250, 20, 52, 31},
{46000, 18, 23, 15},
{46750, 20, 45, 26},
{47000, 20, 40, 23},
{48000, 18, 24, 15},
{49000, 18, 49, 30},
{49500, 16, 22, 15},
{50000, 18, 25, 15},
{50500, 18, 32, 19},
{51000, 18, 34, 20},
{52000, 18, 26, 15},
{52406, 14, 34, 25},
{53000, 16, 22, 14},
{54000, 16, 24, 15},
{54054, 16, 173, 108},
{54500, 14, 24, 17},
{55000, 12, 22, 18},
{56000, 14, 45, 31},
{56250, 16, 25, 15},
{56750, 14, 25, 17},
{57000, 16, 27, 16},
{58000, 16, 43, 25},
{58250, 16, 38, 22},
{58750, 16, 40, 23},
{59000, 14, 26, 17},
{59341, 14, 40, 26},
{59400, 16, 44, 25},
{60000, 16, 32, 18},
{60500, 12, 39, 29},
{61000, 14, 49, 31},
{62000, 14, 37, 23},
{62250, 14, 42, 26},
{63000, 12, 21, 15},
{63500, 14, 28, 17},
{64000, 12, 27, 19},
{65000, 14, 32, 19},
{65250, 12, 29, 20},
{65500, 12, 32, 22},
{66000, 12, 22, 15},
{66667, 14, 38, 22},
{66750, 10, 21, 17},
{67000, 14, 33, 19},
{67750, 14, 58, 33},
{68000, 14, 30, 17},
{68179, 14, 46, 26},
{68250, 14, 46, 26},
{69000, 12, 23, 15},
{70000, 12, 28, 18},
{71000, 12, 30, 19},
{72000, 12, 24, 15},
{73000, 10, 23, 17},
{74000, 12, 23, 14},
{74176, 8, 100, 91},
{74250, 10, 22, 16},
{74481, 12, 43, 26},
{74500, 10, 29, 21},
{75000, 12, 25, 15},
{75250, 10, 39, 28},
{76000, 12, 27, 16},
{77000, 12, 53, 31},
{78000, 12, 26, 15},
{78750, 12, 28, 16},
{79000, 10, 38, 26},
{79500, 10, 28, 19},
{80000, 12, 32, 18},
{81000, 10, 21, 14},
{81081, 6, 100, 111},
{81624, 8, 29, 24},
{82000, 8, 17, 14},
{83000, 10, 40, 26},
{83950, 10, 28, 18},
{84000, 10, 28, 18},
{84750, 6, 16, 17},
{85000, 6, 17, 18},
{85250, 10, 30, 19},
{85750, 10, 27, 17},
{86000, 10, 43, 27},
{87000, 10, 29, 18},
{88000, 10, 44, 27},
{88500, 10, 41, 25},
{89000, 10, 28, 17},
{89012, 6, 90, 91},
{89100, 10, 33, 20},
{90000, 10, 25, 15},
{91000, 10, 32, 19},
{92000, 10, 46, 27},
{93000, 10, 31, 18},
{94000, 10, 40, 23},
{94500, 10, 28, 16},
{95000, 10, 44, 25},
{95654, 10, 39, 22},
{95750, 10, 39, 22},
{96000, 10, 32, 18},
{97000, 8, 23, 16},
{97750, 8, 42, 29},
{98000, 8, 45, 31},
{99000, 8, 22, 15},
{99750, 8, 34, 23},
{100000, 6, 20, 18},
{100500, 6, 19, 17},
{101000, 6, 37, 33},
{101250, 8, 21, 14},
{102000, 6, 17, 15},
{102250, 6, 25, 22},
{103000, 8, 29, 19},
{104000, 8, 37, 24},
{105000, 8, 28, 18},
{106000, 8, 22, 14},
{107000, 8, 46, 29},
{107214, 8, 27, 17},
{108000, 8, 24, 15},
{108108, 8, 173, 108},
{109000, 6, 23, 19},
{110000, 6, 22, 18},
{110013, 6, 22, 18},
{110250, 8, 49, 30},
{110500, 8, 36, 22},
{111000, 8, 23, 14},
{111264, 8, 150, 91},
{111375, 8, 33, 20},
{112000, 8, 63, 38},
{112500, 8, 25, 15},
{113100, 8, 57, 34},
{113309, 8, 42, 25},
{114000, 8, 27, 16},
{115000, 6, 23, 18},
{116000, 8, 43, 25},
{117000, 8, 26, 15},
{117500, 8, 40, 23},
{118000, 6, 38, 29},
{119000, 8, 30, 17},
{119500, 8, 46, 26},
{119651, 8, 39, 22},
{120000, 8, 32, 18},
{121000, 6, 39, 29},
{121250, 6, 31, 23},
{121750, 6, 23, 17},
{122000, 6, 42, 31},
{122614, 6, 30, 22},
{123000, 6, 41, 30},
{123379, 6, 37, 27},
{124000, 6, 51, 37},
{125000, 6, 25, 18},
{125250, 4, 13, 14},
{125750, 4, 27, 29},
{126000, 6, 21, 15},
{127000, 6, 24, 17},
{127250, 6, 41, 29},
{128000, 6, 27, 19},
{129000, 6, 43, 30},
{129859, 4, 25, 26},
{130000, 6, 26, 18},
{130250, 6, 42, 29},
{131000, 6, 32, 22},
{131500, 6, 38, 26},
{131850, 6, 41, 28},
{132000, 6, 22, 15},
{132750, 6, 28, 19},
{133000, 6, 34, 23},
{133330, 6, 37, 25},
{134000, 6, 61, 41},
{135000, 6, 21, 14},
{135250, 6, 167, 111},
{136000, 6, 62, 41},
{137000, 6, 35, 23},
{138000, 6, 23, 15},
{138500, 6, 40, 26},
{138750, 6, 37, 24},
{139000, 6, 34, 22},
{139050, 6, 34, 22},
{139054, 6, 34, 22},
{140000, 6, 28, 18},
{141000, 6, 36, 23},
{141500, 6, 22, 14},
{142000, 6, 30, 19},
{143000, 6, 27, 17},
{143472, 4, 17, 16},
{144000, 6, 24, 15},
{145000, 6, 29, 18},
{146000, 6, 47, 29},
{146250, 6, 26, 16},
{147000, 6, 49, 30},
{147891, 6, 23, 14},
{148000, 6, 23, 14},
{148250, 6, 28, 17},
{148352, 4, 100, 91},
{148500, 6, 33, 20},
{149000, 6, 48, 29},
{150000, 6, 25, 15},
{151000, 4, 19, 17},
{152000, 6, 27, 16},
{152280, 6, 44, 26},
{153000, 6, 34, 20},
{154000, 6, 53, 31},
{155000, 6, 31, 18},
{155250, 6, 50, 29},
{155750, 6, 45, 26},
{156000, 6, 26, 15},
{157000, 6, 61, 35},
{157500, 6, 28, 16},
{158000, 6, 65, 37},
{158250, 6, 44, 25},
{159000, 6, 53, 30},
{159500, 6, 39, 22},
{160000, 6, 32, 18},
{161000, 4, 31, 26},
{162000, 4, 18, 15},
{162162, 4, 131, 109},
{162500, 4, 53, 44},
{163000, 4, 29, 24},
{164000, 4, 17, 14},
{165000, 4, 22, 18},
{166000, 4, 32, 26},
{167000, 4, 26, 21},
{168000, 4, 46, 37},
{169000, 4, 104, 83},
{169128, 4, 64, 51},
{169500, 4, 39, 31},
{170000, 4, 34, 27},
{171000, 4, 19, 15},
{172000, 4, 51, 40},
{172750, 4, 32, 25},
{172800, 4, 32, 25},
{173000, 4, 41, 32},
{174000, 4, 49, 38},
{174787, 4, 22, 17},
{175000, 4, 35, 27},
{176000, 4, 30, 23},
{177000, 4, 38, 29},
{178000, 4, 29, 22},
{178500, 4, 37, 28},
{179000, 4, 53, 40},
{179500, 4, 73, 55},
{180000, 4, 20, 15},
{181000, 4, 55, 41},
{182000, 4, 31, 23},
{183000, 4, 42, 31},
{184000, 4, 30, 22},
{184750, 4, 26, 19},
{185000, 4, 37, 27},
{186000, 4, 51, 37},
{187000, 4, 36, 26},
{188000, 4, 32, 23},
{189000, 4, 21, 15},
{190000, 4, 38, 27},
{190960, 4, 41, 29},
{191000, 4, 41, 29},
{192000, 4, 27, 19},
{192250, 4, 37, 26},
{193000, 4, 20, 14},
{193250, 4, 53, 37},
{194000, 4, 23, 16},
{194208, 4, 23, 16},
{195000, 4, 26, 18},
{196000, 4, 45, 31},
{197000, 4, 35, 24},
{197750, 4, 41, 28},
{198000, 4, 22, 15},
{198500, 4, 25, 17},
{199000, 4, 28, 19},
{200000, 4, 37, 25},
{201000, 4, 61, 41},
{202000, 4, 112, 75},
{202500, 4, 21, 14},
{203000, 4, 146, 97},
{204000, 4, 62, 41},
{204750, 4, 44, 29},
{205000, 4, 38, 25},
{206000, 4, 29, 19},
{207000, 4, 23, 15},
{207500, 4, 40, 26},
{208000, 4, 37, 24},
{208900, 4, 48, 31},
{209000, 4, 48, 31},
{209250, 4, 31, 20},
{210000, 4, 28, 18},
{211000, 4, 25, 16},
{212000, 4, 22, 14},
{213000, 4, 30, 19},
{213750, 4, 38, 24},
{214000, 4, 46, 29},
{214750, 4, 35, 22},
{215000, 4, 43, 27},
{216000, 4, 24, 15},
{217000, 4, 37, 23},
{218000, 4, 42, 26},
{218250, 4, 42, 26},
{218750, 4, 34, 21},
{219000, 4, 47, 29},
{220000, 4, 44, 27},
{220640, 4, 49, 30},
{220750, 4, 36, 22},
{221000, 4, 36, 22},
{222000, 4, 23, 14},
{222525, 4, 28, 17},
{222750, 4, 33, 20},
{227000, 4, 37, 22},
{230250, 4, 29, 17},
{233500, 4, 38, 22},
{235000, 4, 40, 23},
{238000, 4, 30, 17},
{241500, 2, 17, 19},
{245250, 2, 20, 22},
{247750, 2, 22, 24},
{253250, 2, 15, 16},
{256250, 2, 18, 19},
{262500, 2, 31, 32},
{267250, 2, 66, 67},
{268500, 2, 94, 95},
{270000, 2, 14, 14},
{272500, 2, 77, 76},
{273750, 2, 57, 56},
{280750, 2, 24, 23},
{281250, 2, 23, 22},
{286000, 2, 17, 16},
{291750, 2, 26, 24},
{296703, 2, 56, 51},
{297000, 2, 22, 20},
{298000, 2, 21, 19},
};
static void intel_ddi_mode_set(struct drm_encoder *encoder,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
struct drm_crtc *crtc = encoder->crtc;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
int port = intel_ddi_get_encoder_port(intel_encoder);
int pipe = intel_crtc->pipe;
int type = intel_encoder->type;
DRM_DEBUG_KMS("Preparing DDI mode for Haswell on port %c, pipe %c\n",
port_name(port), pipe_name(pipe));
if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP) {
struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
intel_dp->DP = DDI_BUF_CTL_ENABLE | DDI_BUF_EMP_400MV_0DB_HSW;
switch (intel_dp->lane_count) {
case 1:
intel_dp->DP |= DDI_PORT_WIDTH_X1;
break;
case 2:
intel_dp->DP |= DDI_PORT_WIDTH_X2;
break;
case 4:
intel_dp->DP |= DDI_PORT_WIDTH_X4;
break;
default:
intel_dp->DP |= DDI_PORT_WIDTH_X4;
WARN(1, "Unexpected DP lane count %d\n",
intel_dp->lane_count);
break;
}
if (intel_dp->has_audio) {
DRM_DEBUG_DRIVER("DP audio on pipe %c on DDI\n",
pipe_name(intel_crtc->pipe));
/* write eld */
DRM_DEBUG_DRIVER("DP audio: write eld information\n");
intel_write_eld(encoder, adjusted_mode);
}
intel_dp_init_link_config(intel_dp);
} else if (type == INTEL_OUTPUT_HDMI) {
struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
if (intel_hdmi->has_audio) {
/* Proper support for digital audio needs a new logic
* and a new set of registers, so we leave it for future
* patch bombing.
*/
DRM_DEBUG_DRIVER("HDMI audio on pipe %c on DDI\n",
pipe_name(intel_crtc->pipe));
/* write eld */
DRM_DEBUG_DRIVER("HDMI audio: write eld information\n");
intel_write_eld(encoder, adjusted_mode);
}
intel_hdmi->set_infoframes(encoder, adjusted_mode);
}
}
static struct intel_encoder *
intel_ddi_get_crtc_encoder(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_encoder *intel_encoder, *ret = NULL;
int num_encoders = 0;
for_each_encoder_on_crtc(dev, crtc, intel_encoder) {
ret = intel_encoder;
num_encoders++;
}
if (num_encoders != 1)
WARN(1, "%d encoders on crtc for pipe %d\n", num_encoders,
intel_crtc->pipe);
BUG_ON(ret == NULL);
return ret;
}
void intel_ddi_put_crtc_pll(struct drm_crtc *crtc)
{
struct drm_i915_private *dev_priv = crtc->dev->dev_private;
struct intel_ddi_plls *plls = &dev_priv->ddi_plls;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
uint32_t val;
switch (intel_crtc->ddi_pll_sel) {
case PORT_CLK_SEL_SPLL:
plls->spll_refcount--;
if (plls->spll_refcount == 0) {
DRM_DEBUG_KMS("Disabling SPLL\n");
val = I915_READ(SPLL_CTL);
WARN_ON(!(val & SPLL_PLL_ENABLE));
I915_WRITE(SPLL_CTL, val & ~SPLL_PLL_ENABLE);
POSTING_READ(SPLL_CTL);
}
break;
case PORT_CLK_SEL_WRPLL1:
plls->wrpll1_refcount--;
if (plls->wrpll1_refcount == 0) {
DRM_DEBUG_KMS("Disabling WRPLL 1\n");
val = I915_READ(WRPLL_CTL1);
WARN_ON(!(val & WRPLL_PLL_ENABLE));
I915_WRITE(WRPLL_CTL1, val & ~WRPLL_PLL_ENABLE);
POSTING_READ(WRPLL_CTL1);
}
break;
case PORT_CLK_SEL_WRPLL2:
plls->wrpll2_refcount--;
if (plls->wrpll2_refcount == 0) {
DRM_DEBUG_KMS("Disabling WRPLL 2\n");
val = I915_READ(WRPLL_CTL2);
WARN_ON(!(val & WRPLL_PLL_ENABLE));
I915_WRITE(WRPLL_CTL2, val & ~WRPLL_PLL_ENABLE);
POSTING_READ(WRPLL_CTL2);
}
break;
}
WARN(plls->spll_refcount < 0, "Invalid SPLL refcount\n");
WARN(plls->wrpll1_refcount < 0, "Invalid WRPLL1 refcount\n");
WARN(plls->wrpll2_refcount < 0, "Invalid WRPLL2 refcount\n");
intel_crtc->ddi_pll_sel = PORT_CLK_SEL_NONE;
}
static void intel_ddi_calculate_wrpll(int clock, int *p, int *n2, int *r2)
{
u32 i;
for (i = 0; i < ARRAY_SIZE(wrpll_tmds_clock_table); i++)
if (clock <= wrpll_tmds_clock_table[i].clock)
break;
if (i == ARRAY_SIZE(wrpll_tmds_clock_table))
i--;
*p = wrpll_tmds_clock_table[i].p;
*n2 = wrpll_tmds_clock_table[i].n2;
*r2 = wrpll_tmds_clock_table[i].r2;
if (wrpll_tmds_clock_table[i].clock != clock)
DRM_INFO("WRPLL: using settings for %dKHz on %dKHz mode\n",
wrpll_tmds_clock_table[i].clock, clock);
DRM_DEBUG_KMS("WRPLL: %dKHz refresh rate with p=%d, n2=%d r2=%d\n",
clock, *p, *n2, *r2);
}
bool intel_ddi_pll_mode_set(struct drm_crtc *crtc, int clock)
{
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc);
struct drm_encoder *encoder = &intel_encoder->base;
struct drm_i915_private *dev_priv = crtc->dev->dev_private;
struct intel_ddi_plls *plls = &dev_priv->ddi_plls;
int type = intel_encoder->type;
enum pipe pipe = intel_crtc->pipe;
uint32_t reg, val;
/* TODO: reuse PLLs when possible (compare values) */
intel_ddi_put_crtc_pll(crtc);
if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP) {
struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
switch (intel_dp->link_bw) {
case DP_LINK_BW_1_62:
intel_crtc->ddi_pll_sel = PORT_CLK_SEL_LCPLL_810;
break;
case DP_LINK_BW_2_7:
intel_crtc->ddi_pll_sel = PORT_CLK_SEL_LCPLL_1350;
break;
case DP_LINK_BW_5_4:
intel_crtc->ddi_pll_sel = PORT_CLK_SEL_LCPLL_2700;
break;
default:
DRM_ERROR("Link bandwidth %d unsupported\n",
intel_dp->link_bw);
return false;
}
/* We don't need to turn any PLL on because we'll use LCPLL. */
return true;
} else if (type == INTEL_OUTPUT_HDMI) {
int p, n2, r2;
if (plls->wrpll1_refcount == 0) {
DRM_DEBUG_KMS("Using WRPLL 1 on pipe %c\n",
pipe_name(pipe));
plls->wrpll1_refcount++;
reg = WRPLL_CTL1;
intel_crtc->ddi_pll_sel = PORT_CLK_SEL_WRPLL1;
} else if (plls->wrpll2_refcount == 0) {
DRM_DEBUG_KMS("Using WRPLL 2 on pipe %c\n",
pipe_name(pipe));
plls->wrpll2_refcount++;
reg = WRPLL_CTL2;
intel_crtc->ddi_pll_sel = PORT_CLK_SEL_WRPLL2;
} else {
DRM_ERROR("No WRPLLs available!\n");
return false;
}
WARN(I915_READ(reg) & WRPLL_PLL_ENABLE,
"WRPLL already enabled\n");
intel_ddi_calculate_wrpll(clock, &p, &n2, &r2);
val = WRPLL_PLL_ENABLE | WRPLL_PLL_SELECT_LCPLL_2700 |
WRPLL_DIVIDER_REFERENCE(r2) | WRPLL_DIVIDER_FEEDBACK(n2) |
WRPLL_DIVIDER_POST(p);
} else if (type == INTEL_OUTPUT_ANALOG) {
if (plls->spll_refcount == 0) {
DRM_DEBUG_KMS("Using SPLL on pipe %c\n",
pipe_name(pipe));
plls->spll_refcount++;
reg = SPLL_CTL;
intel_crtc->ddi_pll_sel = PORT_CLK_SEL_SPLL;
}
WARN(I915_READ(reg) & SPLL_PLL_ENABLE,
"SPLL already enabled\n");
val = SPLL_PLL_ENABLE | SPLL_PLL_FREQ_1350MHz | SPLL_PLL_SSC;
} else {
WARN(1, "Invalid DDI encoder type %d\n", type);
return false;
}
I915_WRITE(reg, val);
udelay(20);
return true;
}
void intel_ddi_set_pipe_settings(struct drm_crtc *crtc)
{
struct drm_i915_private *dev_priv = crtc->dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc);
enum transcoder cpu_transcoder = intel_crtc->cpu_transcoder;
int type = intel_encoder->type;
uint32_t temp;
if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP) {
temp = TRANS_MSA_SYNC_CLK;
switch (intel_crtc->bpp) {
case 18:
temp |= TRANS_MSA_6_BPC;
break;
case 24:
temp |= TRANS_MSA_8_BPC;
break;
case 30:
temp |= TRANS_MSA_10_BPC;
break;
case 36:
temp |= TRANS_MSA_12_BPC;
break;
default:
temp |= TRANS_MSA_8_BPC;
WARN(1, "%d bpp unsupported by DDI function\n",
intel_crtc->bpp);
}
I915_WRITE(TRANS_MSA_MISC(cpu_transcoder), temp);
}
}
void intel_ddi_enable_pipe_func(struct drm_crtc *crtc)
{
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc);
struct drm_encoder *encoder = &intel_encoder->base;
struct drm_i915_private *dev_priv = crtc->dev->dev_private;
enum pipe pipe = intel_crtc->pipe;
enum transcoder cpu_transcoder = intel_crtc->cpu_transcoder;
enum port port = intel_ddi_get_encoder_port(intel_encoder);
int type = intel_encoder->type;
uint32_t temp;
/* Enable TRANS_DDI_FUNC_CTL for the pipe to work in HDMI mode */
temp = TRANS_DDI_FUNC_ENABLE;
temp |= TRANS_DDI_SELECT_PORT(port);
switch (intel_crtc->bpp) {
case 18:
temp |= TRANS_DDI_BPC_6;
break;
case 24:
temp |= TRANS_DDI_BPC_8;
break;
case 30:
temp |= TRANS_DDI_BPC_10;
break;
case 36:
temp |= TRANS_DDI_BPC_12;
break;
default:
WARN(1, "%d bpp unsupported by transcoder DDI function\n",
intel_crtc->bpp);
}
if (crtc->mode.flags & DRM_MODE_FLAG_PVSYNC)
temp |= TRANS_DDI_PVSYNC;
if (crtc->mode.flags & DRM_MODE_FLAG_PHSYNC)
temp |= TRANS_DDI_PHSYNC;
if (cpu_transcoder == TRANSCODER_EDP) {
switch (pipe) {
case PIPE_A:
temp |= TRANS_DDI_EDP_INPUT_A_ONOFF;
break;
case PIPE_B:
temp |= TRANS_DDI_EDP_INPUT_B_ONOFF;
break;
case PIPE_C:
temp |= TRANS_DDI_EDP_INPUT_C_ONOFF;
break;
default:
BUG();
break;
}
}
if (type == INTEL_OUTPUT_HDMI) {
struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
if (intel_hdmi->has_hdmi_sink)
temp |= TRANS_DDI_MODE_SELECT_HDMI;
else
temp |= TRANS_DDI_MODE_SELECT_DVI;
} else if (type == INTEL_OUTPUT_ANALOG) {
temp |= TRANS_DDI_MODE_SELECT_FDI;
temp |= (intel_crtc->fdi_lanes - 1) << 1;
} else if (type == INTEL_OUTPUT_DISPLAYPORT ||
type == INTEL_OUTPUT_EDP) {
struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
temp |= TRANS_DDI_MODE_SELECT_DP_SST;
switch (intel_dp->lane_count) {
case 1:
temp |= TRANS_DDI_PORT_WIDTH_X1;
break;
case 2:
temp |= TRANS_DDI_PORT_WIDTH_X2;
break;
case 4:
temp |= TRANS_DDI_PORT_WIDTH_X4;
break;
default:
temp |= TRANS_DDI_PORT_WIDTH_X4;
WARN(1, "Unsupported lane count %d\n",
intel_dp->lane_count);
}
} else {
WARN(1, "Invalid encoder type %d for pipe %d\n",
intel_encoder->type, pipe);
}
I915_WRITE(TRANS_DDI_FUNC_CTL(cpu_transcoder), temp);
}
void intel_ddi_disable_transcoder_func(struct drm_i915_private *dev_priv,
enum transcoder cpu_transcoder)
{
uint32_t reg = TRANS_DDI_FUNC_CTL(cpu_transcoder);
uint32_t val = I915_READ(reg);
val &= ~(TRANS_DDI_FUNC_ENABLE | TRANS_DDI_PORT_MASK);
val |= TRANS_DDI_PORT_NONE;
I915_WRITE(reg, val);
}
bool intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector)
{
struct drm_device *dev = intel_connector->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_encoder *intel_encoder = intel_connector->encoder;
int type = intel_connector->base.connector_type;
enum port port = intel_ddi_get_encoder_port(intel_encoder);
enum pipe pipe = 0;
enum transcoder cpu_transcoder;
uint32_t tmp;
if (!intel_encoder->get_hw_state(intel_encoder, &pipe))
return false;
if (port == PORT_A)
cpu_transcoder = TRANSCODER_EDP;
else
cpu_transcoder = pipe;
tmp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
switch (tmp & TRANS_DDI_MODE_SELECT_MASK) {
case TRANS_DDI_MODE_SELECT_HDMI:
case TRANS_DDI_MODE_SELECT_DVI:
return (type == DRM_MODE_CONNECTOR_HDMIA);
case TRANS_DDI_MODE_SELECT_DP_SST:
if (type == DRM_MODE_CONNECTOR_eDP)
return true;
case TRANS_DDI_MODE_SELECT_DP_MST:
return (type == DRM_MODE_CONNECTOR_DisplayPort);
case TRANS_DDI_MODE_SELECT_FDI:
return (type == DRM_MODE_CONNECTOR_VGA);
default:
return false;
}
}
bool intel_ddi_get_hw_state(struct intel_encoder *encoder,
enum pipe *pipe)
{
struct drm_device *dev = encoder->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
enum port port = intel_ddi_get_encoder_port(encoder);
u32 tmp;
int i;
tmp = I915_READ(DDI_BUF_CTL(port));
if (!(tmp & DDI_BUF_CTL_ENABLE))
return false;
if (port == PORT_A) {
tmp = I915_READ(TRANS_DDI_FUNC_CTL(TRANSCODER_EDP));
switch (tmp & TRANS_DDI_EDP_INPUT_MASK) {
case TRANS_DDI_EDP_INPUT_A_ON:
case TRANS_DDI_EDP_INPUT_A_ONOFF:
*pipe = PIPE_A;
break;
case TRANS_DDI_EDP_INPUT_B_ONOFF:
*pipe = PIPE_B;
break;
case TRANS_DDI_EDP_INPUT_C_ONOFF:
*pipe = PIPE_C;
break;
}
return true;
} else {
for (i = TRANSCODER_A; i <= TRANSCODER_C; i++) {
tmp = I915_READ(TRANS_DDI_FUNC_CTL(i));
if ((tmp & TRANS_DDI_PORT_MASK)
== TRANS_DDI_SELECT_PORT(port)) {
*pipe = i;
return true;
}
}
}
DRM_DEBUG_KMS("No pipe for ddi port %i found\n", port);
return true;
}
static uint32_t intel_ddi_get_crtc_pll(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
uint32_t temp, ret;
enum port port;
enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
pipe);
int i;
if (cpu_transcoder == TRANSCODER_EDP) {
port = PORT_A;
} else {
temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
temp &= TRANS_DDI_PORT_MASK;
for (i = PORT_B; i <= PORT_E; i++)
if (temp == TRANS_DDI_SELECT_PORT(i))
port = i;
}
ret = I915_READ(PORT_CLK_SEL(port));
DRM_DEBUG_KMS("Pipe %c connected to port %c using clock 0x%08x\n",
pipe_name(pipe), port_name(port), ret);
return ret;
}
void intel_ddi_setup_hw_pll_state(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
enum pipe pipe;
struct intel_crtc *intel_crtc;
for_each_pipe(pipe) {
intel_crtc =
to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
if (!intel_crtc->active)
continue;
intel_crtc->ddi_pll_sel = intel_ddi_get_crtc_pll(dev_priv,
pipe);
switch (intel_crtc->ddi_pll_sel) {
case PORT_CLK_SEL_SPLL:
dev_priv->ddi_plls.spll_refcount++;
break;
case PORT_CLK_SEL_WRPLL1:
dev_priv->ddi_plls.wrpll1_refcount++;
break;
case PORT_CLK_SEL_WRPLL2:
dev_priv->ddi_plls.wrpll2_refcount++;
break;
}
}
}
void intel_ddi_enable_pipe_clock(struct intel_crtc *intel_crtc)
{
struct drm_crtc *crtc = &intel_crtc->base;
struct drm_i915_private *dev_priv = crtc->dev->dev_private;
struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc);
enum port port = intel_ddi_get_encoder_port(intel_encoder);
enum transcoder cpu_transcoder = intel_crtc->cpu_transcoder;
if (cpu_transcoder != TRANSCODER_EDP)
I915_WRITE(TRANS_CLK_SEL(cpu_transcoder),
TRANS_CLK_SEL_PORT(port));
}
void intel_ddi_disable_pipe_clock(struct intel_crtc *intel_crtc)
{
struct drm_i915_private *dev_priv = intel_crtc->base.dev->dev_private;
enum transcoder cpu_transcoder = intel_crtc->cpu_transcoder;
if (cpu_transcoder != TRANSCODER_EDP)
I915_WRITE(TRANS_CLK_SEL(cpu_transcoder),
TRANS_CLK_SEL_DISABLED);
}
static void intel_ddi_pre_enable(struct intel_encoder *intel_encoder)
{
struct drm_encoder *encoder = &intel_encoder->base;
struct drm_crtc *crtc = encoder->crtc;
struct drm_i915_private *dev_priv = encoder->dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
enum port port = intel_ddi_get_encoder_port(intel_encoder);
int type = intel_encoder->type;
if (type == INTEL_OUTPUT_EDP) {
struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
ironlake_edp_panel_vdd_on(intel_dp);
ironlake_edp_panel_on(intel_dp);
ironlake_edp_panel_vdd_off(intel_dp, true);
}
WARN_ON(intel_crtc->ddi_pll_sel == PORT_CLK_SEL_NONE);
I915_WRITE(PORT_CLK_SEL(port), intel_crtc->ddi_pll_sel);
if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP) {
struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON);
intel_dp_start_link_train(intel_dp);
intel_dp_complete_link_train(intel_dp);
}
}
static void intel_wait_ddi_buf_idle(struct drm_i915_private *dev_priv,
enum port port)
{
uint32_t reg = DDI_BUF_CTL(port);
int i;
for (i = 0; i < 8; i++) {
udelay(1);
if (I915_READ(reg) & DDI_BUF_IS_IDLE)
return;
}
DRM_ERROR("Timeout waiting for DDI BUF %c idle bit\n", port_name(port));
}
static void intel_ddi_post_disable(struct intel_encoder *intel_encoder)
{
struct drm_encoder *encoder = &intel_encoder->base;
struct drm_i915_private *dev_priv = encoder->dev->dev_private;
enum port port = intel_ddi_get_encoder_port(intel_encoder);
int type = intel_encoder->type;
uint32_t val;
bool wait = false;
val = I915_READ(DDI_BUF_CTL(port));
if (val & DDI_BUF_CTL_ENABLE) {
val &= ~DDI_BUF_CTL_ENABLE;
I915_WRITE(DDI_BUF_CTL(port), val);
wait = true;
}
val = I915_READ(DP_TP_CTL(port));
val &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK);
val |= DP_TP_CTL_LINK_TRAIN_PAT1;
I915_WRITE(DP_TP_CTL(port), val);
if (wait)
intel_wait_ddi_buf_idle(dev_priv, port);
if (type == INTEL_OUTPUT_EDP) {
struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
ironlake_edp_panel_vdd_on(intel_dp);
ironlake_edp_panel_off(intel_dp);
}
I915_WRITE(PORT_CLK_SEL(port), PORT_CLK_SEL_NONE);
}
static void intel_enable_ddi(struct intel_encoder *intel_encoder)
{
struct drm_encoder *encoder = &intel_encoder->base;
struct drm_device *dev = encoder->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
enum port port = intel_ddi_get_encoder_port(intel_encoder);
int type = intel_encoder->type;
if (type == INTEL_OUTPUT_HDMI) {
/* In HDMI/DVI mode, the port width, and swing/emphasis values
* are ignored so nothing special needs to be done besides
* enabling the port.
*/
I915_WRITE(DDI_BUF_CTL(port), DDI_BUF_CTL_ENABLE);
} else if (type == INTEL_OUTPUT_EDP) {
struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
ironlake_edp_backlight_on(intel_dp);
}
drm/i915/hdmi: convert to encoder->disable/enable I've picked hdmi as the first encoder to convert because it's rather simple: - no cloning possible - no differences between prepare/commit and dpms off/on switching. A few changes are required to do so: - Split up the dpms code into an enable/disable function and wire it up with the intel encoder. - Noop out the existing encoder prepare/commit functions used by the crtc helper - our crtc enable/disable code now calls back into the encoder enable/disable code at the right spot. - Create new helper functions to handle dpms changes. - Add intel_encoder->connectors_active to better track dpms state. Atm this is unused, but it will be useful to correctly disable the entire display pipe for cloned configurations. Also note that for now this is only useful in the dpms code - thanks to the crtc helper's dpms confusion across a modeset operation we can't (yet) rely on this having a sensible value in all circumstances. - Rip out the encoder helper dpms callback, if this is still getting called somewhere we have a bug. The slight issue with that is that the crtc helper abuses dpms off to disable unused functions. Hence we also need to implement a default encoder disable function to do just that with the new encoder->disable callback. - Note that we drop the cpt modeset verification in the commit callback, too. The right place to do this would be in the crtc's enable function, _after_ all the encoders are set up. But because not all encoders are converted yet, we can't do that. Hence disable this check temporarily as a minor concession to bisectability. v2: Squash the dpms mode to only the supported values - connector->dpms is for internal tracking only, we can hence avoid needless state-changes a bit whithout causing harm. v3: Apply bikeshed to disable|enable_ddi, suggested by Paulo Zanoni. Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-06-30 06:59:56 +00:00
}
static void intel_disable_ddi(struct intel_encoder *intel_encoder)
drm/i915/hdmi: convert to encoder->disable/enable I've picked hdmi as the first encoder to convert because it's rather simple: - no cloning possible - no differences between prepare/commit and dpms off/on switching. A few changes are required to do so: - Split up the dpms code into an enable/disable function and wire it up with the intel encoder. - Noop out the existing encoder prepare/commit functions used by the crtc helper - our crtc enable/disable code now calls back into the encoder enable/disable code at the right spot. - Create new helper functions to handle dpms changes. - Add intel_encoder->connectors_active to better track dpms state. Atm this is unused, but it will be useful to correctly disable the entire display pipe for cloned configurations. Also note that for now this is only useful in the dpms code - thanks to the crtc helper's dpms confusion across a modeset operation we can't (yet) rely on this having a sensible value in all circumstances. - Rip out the encoder helper dpms callback, if this is still getting called somewhere we have a bug. The slight issue with that is that the crtc helper abuses dpms off to disable unused functions. Hence we also need to implement a default encoder disable function to do just that with the new encoder->disable callback. - Note that we drop the cpt modeset verification in the commit callback, too. The right place to do this would be in the crtc's enable function, _after_ all the encoders are set up. But because not all encoders are converted yet, we can't do that. Hence disable this check temporarily as a minor concession to bisectability. v2: Squash the dpms mode to only the supported values - connector->dpms is for internal tracking only, we can hence avoid needless state-changes a bit whithout causing harm. v3: Apply bikeshed to disable|enable_ddi, suggested by Paulo Zanoni. Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-06-30 06:59:56 +00:00
{
struct drm_encoder *encoder = &intel_encoder->base;
int type = intel_encoder->type;
if (type == INTEL_OUTPUT_EDP) {
struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
ironlake_edp_backlight_off(intel_dp);
}
}
int intel_ddi_get_cdclk_freq(struct drm_i915_private *dev_priv)
{
if (I915_READ(HSW_FUSE_STRAP) & HSW_CDCLK_LIMIT)
return 450;
else if ((I915_READ(LCPLL_CTL) & LCPLL_CLK_FREQ_MASK) ==
LCPLL_CLK_FREQ_450)
return 450;
else if (IS_ULT(dev_priv->dev))
return 338;
else
return 540;
}
void intel_ddi_pll_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t val = I915_READ(LCPLL_CTL);
/* The LCPLL register should be turned on by the BIOS. For now let's
* just check its state and print errors in case something is wrong.
* Don't even try to turn it on.
*/
DRM_DEBUG_KMS("CDCLK running at %dMHz\n",
intel_ddi_get_cdclk_freq(dev_priv));
if (val & LCPLL_CD_SOURCE_FCLK)
DRM_ERROR("CDCLK source is not LCPLL\n");
if (val & LCPLL_PLL_DISABLE)
DRM_ERROR("LCPLL is disabled\n");
}
void intel_ddi_prepare_link_retrain(struct drm_encoder *encoder)
{
struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
struct intel_dp *intel_dp = &intel_dig_port->dp;
struct drm_i915_private *dev_priv = encoder->dev->dev_private;
enum port port = intel_dig_port->port;
bool wait;
uint32_t val;
if (I915_READ(DP_TP_CTL(port)) & DP_TP_CTL_ENABLE) {
val = I915_READ(DDI_BUF_CTL(port));
if (val & DDI_BUF_CTL_ENABLE) {
val &= ~DDI_BUF_CTL_ENABLE;
I915_WRITE(DDI_BUF_CTL(port), val);
wait = true;
}
val = I915_READ(DP_TP_CTL(port));
val &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK);
val |= DP_TP_CTL_LINK_TRAIN_PAT1;
I915_WRITE(DP_TP_CTL(port), val);
POSTING_READ(DP_TP_CTL(port));
if (wait)
intel_wait_ddi_buf_idle(dev_priv, port);
}
val = DP_TP_CTL_ENABLE | DP_TP_CTL_MODE_SST |
DP_TP_CTL_LINK_TRAIN_PAT1 | DP_TP_CTL_SCRAMBLE_DISABLE;
if (intel_dp->link_configuration[1] & DP_LANE_COUNT_ENHANCED_FRAME_EN)
val |= DP_TP_CTL_ENHANCED_FRAME_ENABLE;
I915_WRITE(DP_TP_CTL(port), val);
POSTING_READ(DP_TP_CTL(port));
intel_dp->DP |= DDI_BUF_CTL_ENABLE;
I915_WRITE(DDI_BUF_CTL(port), intel_dp->DP);
POSTING_READ(DDI_BUF_CTL(port));
udelay(600);
}
void intel_ddi_fdi_disable(struct drm_crtc *crtc)
{
struct drm_i915_private *dev_priv = crtc->dev->dev_private;
struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc);
uint32_t val;
intel_ddi_post_disable(intel_encoder);
val = I915_READ(_FDI_RXA_CTL);
val &= ~FDI_RX_ENABLE;
I915_WRITE(_FDI_RXA_CTL, val);
val = I915_READ(_FDI_RXA_MISC);
val &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK);
val |= FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2);
I915_WRITE(_FDI_RXA_MISC, val);
val = I915_READ(_FDI_RXA_CTL);
val &= ~FDI_PCDCLK;
I915_WRITE(_FDI_RXA_CTL, val);
val = I915_READ(_FDI_RXA_CTL);
val &= ~FDI_RX_PLL_ENABLE;
I915_WRITE(_FDI_RXA_CTL, val);
}
static void intel_ddi_hot_plug(struct intel_encoder *intel_encoder)
{
struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base);
int type = intel_encoder->type;
if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP)
intel_dp_check_link_status(intel_dp);
}
static void intel_ddi_destroy(struct drm_encoder *encoder)
{
/* HDMI has nothing special to destroy, so we can go with this. */
intel_dp_encoder_destroy(encoder);
}
static bool intel_ddi_mode_fixup(struct drm_encoder *encoder,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
int type = intel_encoder->type;
WARN(type == INTEL_OUTPUT_UNKNOWN, "mode_fixup() on unknown output!\n");
if (type == INTEL_OUTPUT_HDMI)
return intel_hdmi_mode_fixup(encoder, mode, adjusted_mode);
else
return intel_dp_mode_fixup(encoder, mode, adjusted_mode);
}
static const struct drm_encoder_funcs intel_ddi_funcs = {
.destroy = intel_ddi_destroy,
};
static const struct drm_encoder_helper_funcs intel_ddi_helper_funcs = {
.mode_fixup = intel_ddi_mode_fixup,
.mode_set = intel_ddi_mode_set,
.disable = intel_encoder_noop,
};
void intel_ddi_init(struct drm_device *dev, enum port port)
{
struct intel_digital_port *intel_dig_port;
struct intel_encoder *intel_encoder;
struct drm_encoder *encoder;
struct intel_connector *hdmi_connector = NULL;
struct intel_connector *dp_connector = NULL;
intel_dig_port = kzalloc(sizeof(struct intel_digital_port), GFP_KERNEL);
if (!intel_dig_port)
return;
dp_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL);
if (!dp_connector) {
kfree(intel_dig_port);
return;
}
if (port != PORT_A) {
hdmi_connector = kzalloc(sizeof(struct intel_connector),
GFP_KERNEL);
if (!hdmi_connector) {
kfree(dp_connector);
kfree(intel_dig_port);
return;
}
}
intel_encoder = &intel_dig_port->base;
encoder = &intel_encoder->base;
drm_encoder_init(dev, encoder, &intel_ddi_funcs,
DRM_MODE_ENCODER_TMDS);
drm_encoder_helper_add(encoder, &intel_ddi_helper_funcs);
intel_encoder->enable = intel_enable_ddi;
intel_encoder->pre_enable = intel_ddi_pre_enable;
intel_encoder->disable = intel_disable_ddi;
intel_encoder->post_disable = intel_ddi_post_disable;
intel_encoder->get_hw_state = intel_ddi_get_hw_state;
intel_dig_port->port = port;
if (hdmi_connector)
intel_dig_port->hdmi.sdvox_reg = DDI_BUF_CTL(port);
else
intel_dig_port->hdmi.sdvox_reg = 0;
intel_dig_port->dp.output_reg = DDI_BUF_CTL(port);
intel_encoder->type = INTEL_OUTPUT_UNKNOWN;
intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
intel_encoder->cloneable = false;
intel_encoder->hot_plug = intel_ddi_hot_plug;
if (hdmi_connector)
intel_hdmi_init_connector(intel_dig_port, hdmi_connector);
intel_dp_init_connector(intel_dig_port, dp_connector);
}