Commit 461cba2d authored by Peng Li's avatar Peng Li Committed by Dave Airlie

drm/i915: Save/restore HWS_PGA on suspend/resume

It fixes suspend/resume failure of xf86-video-intel dri2
branch. As dri2 branch doesn't call I830DRIResume() to restore
hardware status page anymore, we need to preserve
this register across suspend/resume.
Signed-off-by: default avatarPeng Li <peng.li@intel.com>
Signed-off-by: default avatarEric Anholt <eric@anholt.net>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 52440211
......@@ -150,6 +150,7 @@ typedef struct drm_i915_private {
u32 saveDSPBCNTR;
u32 saveDSPARB;
u32 saveRENDERSTANDBY;
u32 saveHWS;
u32 savePIPEACONF;
u32 savePIPEBCONF;
u32 savePIPEASRC;
......
......@@ -244,6 +244,9 @@ int i915_save_state(struct drm_device *dev)
if (IS_I965G(dev) && IS_MOBILE(dev))
dev_priv->saveRENDERSTANDBY = I915_READ(MCHBAR_RENDER_STANDBY);
/* Hardware status page */
dev_priv->saveHWS = I915_READ(HWS_PGA);
/* Display arbitration control */
dev_priv->saveDSPARB = I915_READ(DSPARB);
......@@ -373,6 +376,9 @@ int i915_restore_state(struct drm_device *dev)
if (IS_I965G(dev) && IS_MOBILE(dev))
I915_WRITE(MCHBAR_RENDER_STANDBY, dev_priv->saveRENDERSTANDBY);
/* Hardware status page */
I915_WRITE(HWS_PGA, dev_priv->saveHWS);
/* Display arbitration */
I915_WRITE(DSPARB, dev_priv->saveDSPARB);
......
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