summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/i915/i915_suspend.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu/drm/i915/i915_suspend.c')
-rw-r--r--drivers/gpu/drm/i915/i915_suspend.c15
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c
index 2135f21ea458..41f0fdecfbdc 100644
--- a/drivers/gpu/drm/i915/i915_suspend.c
+++ b/drivers/gpu/drm/i915/i915_suspend.c
@@ -209,7 +209,8 @@ static void i915_save_display(struct drm_device *dev)
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);
- dev_priv->regfile.saveLVDS = I915_READ(PCH_LVDS);
+ if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
+ dev_priv->regfile.saveLVDS = I915_READ(PCH_LVDS);
} else {
dev_priv->regfile.savePP_CONTROL = I915_READ(PP_CONTROL);
dev_priv->regfile.savePFIT_PGM_RATIOS = I915_READ(PFIT_PGM_RATIOS);
@@ -255,6 +256,7 @@ static void i915_save_display(struct drm_device *dev)
static void i915_restore_display(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 mask = 0xffffffff;
/* Display arbitration */
if (INTEL_INFO(dev)->gen <= 4)
@@ -267,10 +269,13 @@ static void i915_restore_display(struct drm_device *dev)
if (INTEL_INFO(dev)->gen >= 4 && !HAS_PCH_SPLIT(dev))
I915_WRITE(BLC_PWM_CTL2, dev_priv->regfile.saveBLC_PWM_CTL2);
- if (HAS_PCH_SPLIT(dev)) {
- I915_WRITE(PCH_LVDS, dev_priv->regfile.saveLVDS);
- } else if (IS_MOBILE(dev) && !IS_I830(dev))
- I915_WRITE(LVDS, dev_priv->regfile.saveLVDS);
+ if (drm_core_check_feature(dev, DRIVER_MODESET))
+ mask = ~LVDS_PORT_EN;
+
+ if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
+ I915_WRITE(PCH_LVDS, dev_priv->regfile.saveLVDS & mask);
+ else if (INTEL_INFO(dev)->gen <= 4 && IS_MOBILE(dev) && !IS_I830(dev))
+ I915_WRITE(LVDS, dev_priv->regfile.saveLVDS & mask);
if (!IS_I830(dev) && !IS_845G(dev) && !HAS_PCH_SPLIT(dev))
I915_WRITE(PFIT_CONTROL, dev_priv->regfile.savePFIT_CONTROL);