[Intel-gfx] [PATCH 13/13] drm/i915: do not save/restore backlight registers
Jani Nikula
jani.nikula at intel.com
Fri Nov 8 15:49:05 CET 2013
The backlight enable code now has the smarts to do the right thing.
Signed-off-by: Jani Nikula <jani.nikula at intel.com>
---
drivers/gpu/drm/i915/i915_drv.h | 6 -----
drivers/gpu/drm/i915/i915_suspend.c | 45 -----------------------------------
2 files changed, 51 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 500bab3..6fec21e 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -766,13 +766,7 @@ struct i915_suspend_saved_registers {
u32 saveDSPATILEOFF;
u32 savePFIT_PGM_RATIOS;
u32 saveBLC_HIST_CTL;
- u32 saveBLC_PWM_CTL;
- u32 saveBLC_PWM_CTL2;
u32 saveBLC_HIST_CTL_B;
- u32 saveBLC_PWM_CTL_B;
- u32 saveBLC_PWM_CTL2_B;
- u32 saveBLC_CPU_PWM_CTL;
- u32 saveBLC_CPU_PWM_CTL2;
u32 saveFPB0;
u32 saveFPB1;
u32 saveDPLL_B;
diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c
index eadf8e1..6b8fef7 100644
--- a/drivers/gpu/drm/i915/i915_suspend.c
+++ b/drivers/gpu/drm/i915/i915_suspend.c
@@ -192,7 +192,6 @@ static void i915_restore_vga(struct drm_device *dev)
static void i915_save_display(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
- unsigned long flags;
/* Display arbitration control */
if (INTEL_INFO(dev)->gen <= 4)
@@ -203,46 +202,27 @@ static void i915_save_display(struct drm_device *dev)
if (!drm_core_check_feature(dev, DRIVER_MODESET))
i915_save_display_reg(dev);
- spin_lock_irqsave(&dev_priv->backlight_lock, flags);
-
/* LVDS state */
if (HAS_PCH_SPLIT(dev)) {
dev_priv->regfile.savePP_CONTROL = I915_READ(PCH_PP_CONTROL);
- dev_priv->regfile.saveBLC_PWM_CTL = I915_READ(BLC_PWM_PCH_CTL1);
- dev_priv->regfile.saveBLC_PWM_CTL2 = I915_READ(BLC_PWM_PCH_CTL2);
- dev_priv->regfile.saveBLC_CPU_PWM_CTL = I915_READ(BLC_PWM_CPU_CTL);
- dev_priv->regfile.saveBLC_CPU_PWM_CTL2 = I915_READ(BLC_PWM_CPU_CTL2);
if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
dev_priv->regfile.saveLVDS = I915_READ(PCH_LVDS);
} else if (IS_VALLEYVIEW(dev)) {
dev_priv->regfile.savePP_CONTROL = I915_READ(PP_CONTROL);
dev_priv->regfile.savePFIT_PGM_RATIOS = I915_READ(PFIT_PGM_RATIOS);
- dev_priv->regfile.saveBLC_PWM_CTL =
- I915_READ(VLV_BLC_PWM_CTL(PIPE_A));
dev_priv->regfile.saveBLC_HIST_CTL =
I915_READ(VLV_BLC_HIST_CTL(PIPE_A));
- dev_priv->regfile.saveBLC_PWM_CTL2 =
- I915_READ(VLV_BLC_PWM_CTL2(PIPE_A));
- dev_priv->regfile.saveBLC_PWM_CTL_B =
- I915_READ(VLV_BLC_PWM_CTL(PIPE_B));
dev_priv->regfile.saveBLC_HIST_CTL_B =
I915_READ(VLV_BLC_HIST_CTL(PIPE_B));
- dev_priv->regfile.saveBLC_PWM_CTL2_B =
- I915_READ(VLV_BLC_PWM_CTL2(PIPE_B));
} else {
dev_priv->regfile.savePP_CONTROL = I915_READ(PP_CONTROL);
dev_priv->regfile.savePFIT_PGM_RATIOS = I915_READ(PFIT_PGM_RATIOS);
- dev_priv->regfile.saveBLC_PWM_CTL = I915_READ(BLC_PWM_CTL);
dev_priv->regfile.saveBLC_HIST_CTL = I915_READ(BLC_HIST_CTL);
- if (INTEL_INFO(dev)->gen >= 4)
- dev_priv->regfile.saveBLC_PWM_CTL2 = I915_READ(BLC_PWM_CTL2);
if (IS_MOBILE(dev) && !IS_I830(dev))
dev_priv->regfile.saveLVDS = I915_READ(LVDS);
}
- spin_unlock_irqrestore(&dev_priv->backlight_lock, flags);
-
if (!IS_I830(dev) && !IS_845G(dev) && !HAS_PCH_SPLIT(dev))
dev_priv->regfile.savePFIT_CONTROL = I915_READ(PFIT_CONTROL);
@@ -278,7 +258,6 @@ static void i915_restore_display(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
u32 mask = 0xffffffff;
- unsigned long flags;
/* Display arbitration */
if (INTEL_INFO(dev)->gen <= 4)
@@ -287,12 +266,6 @@ static void i915_restore_display(struct drm_device *dev)
if (!drm_core_check_feature(dev, DRIVER_MODESET))
i915_restore_display_reg(dev);
- spin_lock_irqsave(&dev_priv->backlight_lock, flags);
-
- /* LVDS state */
- if (INTEL_INFO(dev)->gen >= 4 && !HAS_PCH_SPLIT(dev))
- I915_WRITE(BLC_PWM_CTL2, dev_priv->regfile.saveBLC_PWM_CTL2);
-
if (drm_core_check_feature(dev, DRIVER_MODESET))
mask = ~LVDS_PORT_EN;
@@ -305,13 +278,6 @@ static void i915_restore_display(struct drm_device *dev)
I915_WRITE(PFIT_CONTROL, dev_priv->regfile.savePFIT_CONTROL);
if (HAS_PCH_SPLIT(dev)) {
- I915_WRITE(BLC_PWM_PCH_CTL1, dev_priv->regfile.saveBLC_PWM_CTL);
- I915_WRITE(BLC_PWM_PCH_CTL2, dev_priv->regfile.saveBLC_PWM_CTL2);
- /* NOTE: BLC_PWM_CPU_CTL must be written after BLC_PWM_CPU_CTL2;
- * otherwise we get blank eDP screen after S3 on some machines
- */
- I915_WRITE(BLC_PWM_CPU_CTL2, dev_priv->regfile.saveBLC_CPU_PWM_CTL2);
- I915_WRITE(BLC_PWM_CPU_CTL, dev_priv->regfile.saveBLC_CPU_PWM_CTL);
I915_WRITE(PCH_PP_ON_DELAYS, dev_priv->regfile.savePP_ON_DELAYS);
I915_WRITE(PCH_PP_OFF_DELAYS, dev_priv->regfile.savePP_OFF_DELAYS);
I915_WRITE(PCH_PP_DIVISOR, dev_priv->regfile.savePP_DIVISOR);
@@ -319,21 +285,12 @@ static void i915_restore_display(struct drm_device *dev)
I915_WRITE(RSTDBYCTL,
dev_priv->regfile.saveMCHBAR_RENDER_STANDBY);
} else if (IS_VALLEYVIEW(dev)) {
- I915_WRITE(VLV_BLC_PWM_CTL(PIPE_A),
- dev_priv->regfile.saveBLC_PWM_CTL);
I915_WRITE(VLV_BLC_HIST_CTL(PIPE_A),
dev_priv->regfile.saveBLC_HIST_CTL);
- I915_WRITE(VLV_BLC_PWM_CTL2(PIPE_A),
- dev_priv->regfile.saveBLC_PWM_CTL2);
- I915_WRITE(VLV_BLC_PWM_CTL(PIPE_B),
- dev_priv->regfile.saveBLC_PWM_CTL);
I915_WRITE(VLV_BLC_HIST_CTL(PIPE_B),
dev_priv->regfile.saveBLC_HIST_CTL);
- I915_WRITE(VLV_BLC_PWM_CTL2(PIPE_B),
- dev_priv->regfile.saveBLC_PWM_CTL2);
} else {
I915_WRITE(PFIT_PGM_RATIOS, dev_priv->regfile.savePFIT_PGM_RATIOS);
- I915_WRITE(BLC_PWM_CTL, dev_priv->regfile.saveBLC_PWM_CTL);
I915_WRITE(BLC_HIST_CTL, dev_priv->regfile.saveBLC_HIST_CTL);
I915_WRITE(PP_ON_DELAYS, dev_priv->regfile.savePP_ON_DELAYS);
I915_WRITE(PP_OFF_DELAYS, dev_priv->regfile.savePP_OFF_DELAYS);
@@ -341,8 +298,6 @@ static void i915_restore_display(struct drm_device *dev)
I915_WRITE(PP_CONTROL, dev_priv->regfile.savePP_CONTROL);
}
- spin_unlock_irqrestore(&dev_priv->backlight_lock, flags);
-
/* only restore FBC info on the platform that supports FBC*/
intel_disable_fbc(dev);
if (I915_HAS_FBC(dev)) {
--
1.7.10.4
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