diff options
| author | Jani Nikula <jani.nikula@intel.com> | 2014-11-12 16:25:42 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-11-14 10:29:27 +0100 |
| commit | f7faa1ef175d34d600df6eb21d16b596088a608e (patch) | |
| tree | 299811df7e80c0ab7957ff547828fd20d3443916 /drivers/gpu/drm/i915/i915_suspend.c | |
| parent | 5ea13be5badca78a11921b864db380274279c8b9 (diff) | |
drm/i915: don't save/restore panel fitter registers
AFAICT i9xx_pfit_disable() on the GMCH display crtc disable path in
i9xx_crtc_disable() will always disable the panel fitter by writing 0 to
PFIT_CONTROL. The register save will always save/restore 0. Also we
completely recompue both in intel_gmch_panel_fitting so there's no way
we depend upon leftover bits.
Move the PFIT_CONTROL and PFIT_PGM_RATIOS save/restore to UMS
code. While at it, save/restore them both under the same conditions.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
[danvet: Make it a bit clearer that we nowhere depend upon these
bits.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_suspend.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_suspend.c | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c index 26b6bf9261ca..df2b7f18a679 100644 --- a/drivers/gpu/drm/i915/i915_suspend.c +++ b/drivers/gpu/drm/i915/i915_suspend.c @@ -208,23 +208,17 @@ 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.savePFIT_PGM_RATIOS = I915_READ(PFIT_PGM_RATIOS); - dev_priv->regfile.saveBLC_HIST_CTL = I915_READ(VLV_BLC_HIST_CTL(PIPE_A)); dev_priv->regfile.saveBLC_HIST_CTL_B = I915_READ(VLV_BLC_HIST_CTL(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_HIST_CTL = I915_READ(BLC_HIST_CTL); if (IS_MOBILE(dev) && !IS_I830(dev)) dev_priv->regfile.saveLVDS = I915_READ(LVDS); } - if (!IS_I830(dev) && !IS_845G(dev) && !HAS_PCH_SPLIT(dev)) - dev_priv->regfile.savePFIT_CONTROL = I915_READ(PFIT_CONTROL); - if (HAS_PCH_SPLIT(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); @@ -263,9 +257,6 @@ static void i915_restore_display(struct drm_device *dev) 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); - if (HAS_PCH_SPLIT(dev)) { I915_WRITE(PCH_PP_ON_DELAYS, dev_priv->regfile.savePP_ON_DELAYS); I915_WRITE(PCH_PP_OFF_DELAYS, dev_priv->regfile.savePP_OFF_DELAYS); @@ -277,7 +268,6 @@ static void i915_restore_display(struct drm_device *dev) I915_WRITE(VLV_BLC_HIST_CTL(PIPE_B), dev_priv->regfile.saveBLC_HIST_CTL); } else { - I915_WRITE(PFIT_PGM_RATIOS, dev_priv->regfile.savePFIT_PGM_RATIOS); 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); |