drm/i915/vlv: don't save panel power sequencer registers on suspend

Don't save the panel power sequencer register on vlv/chv for two simple
reasons. First, these are the wrong registers to save to begin
with. Second, they are not restored anyway.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c
index 043123c..bd8adf2 100644 (file)
--- a/drivers/gpu/drm/i915/i915_suspend.c
+++ b/drivers/gpu/drm/i915/i915_suspend.c
@@ -208,7 +208,6 @@ static void i915_save_display(struct drm_device *dev)
                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_HIST_CTL =
@@ -230,7 +229,7 @@ static void i915_save_display(struct drm_device *dev)
                dev_priv->regfile.savePP_ON_DELAYS = I915_READ(PCH_PP_ON_DELAYS);
                dev_priv->regfile.savePP_OFF_DELAYS = I915_READ(PCH_PP_OFF_DELAYS);
                dev_priv->regfile.savePP_DIVISOR = I915_READ(PCH_PP_DIVISOR);
-       } else {
+       } else if (!IS_VALLEYVIEW(dev)) {
                dev_priv->regfile.savePP_ON_DELAYS = I915_READ(PP_ON_DELAYS);
                dev_priv->regfile.savePP_OFF_DELAYS = I915_READ(PP_OFF_DELAYS);
                dev_priv->regfile.savePP_DIVISOR = I915_READ(PP_DIVISOR);