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| author | Armin Reese <armin.c.reese@intel.com> | 2012-03-30 16:20:16 -0700 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-04-17 17:54:51 +0200 |
| commit | 446f254566ea8911c9e19c7bc8a162fc0e53cf31 (patch) | |
| tree | 22c60cf8cf85a7e87676780faeca086dafbb2596 /drivers/gpu/drm/i915/intel_sprite.c | |
| parent | 83de97c885b633ab6d12346a406911fadeb85f8c (diff) | |
| download | blackbird-obmc-linux-446f254566ea8911c9e19c7bc8a162fc0e53cf31.tar.gz blackbird-obmc-linux-446f254566ea8911c9e19c7bc8a162fc0e53cf31.zip | |
drm/i915: Mask reserved bits in display/sprite address registers
The purpose of this patch is to avoid zeroing the lower 12 reserved bits
of surface base address registers (framebuffer & sprite). There are bits
in that range that may occasionally be set by BIOS or by other components.
Signed-off-by: Armin Reese <armin.c.reese@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_sprite.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_sprite.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c index 987800a0234f..fbf03b996587 100644 --- a/drivers/gpu/drm/i915/intel_sprite.c +++ b/drivers/gpu/drm/i915/intel_sprite.c @@ -133,7 +133,7 @@ ivb_update_plane(struct drm_plane *plane, struct drm_framebuffer *fb, I915_WRITE(SPRSIZE(pipe), (crtc_h << 16) | crtc_w); I915_WRITE(SPRSCALE(pipe), sprscale); I915_WRITE(SPRCTL(pipe), sprctl); - I915_WRITE(SPRSURF(pipe), obj->gtt_offset); + I915_MODIFY_DISPBASE(SPRSURF(pipe), obj->gtt_offset); POSTING_READ(SPRSURF(pipe)); } @@ -149,7 +149,7 @@ ivb_disable_plane(struct drm_plane *plane) /* Can't leave the scaler enabled... */ I915_WRITE(SPRSCALE(pipe), 0); /* Activate double buffered register update */ - I915_WRITE(SPRSURF(pipe), 0); + I915_MODIFY_DISPBASE(SPRSURF(pipe), 0); POSTING_READ(SPRSURF(pipe)); } @@ -291,7 +291,7 @@ ilk_update_plane(struct drm_plane *plane, struct drm_framebuffer *fb, I915_WRITE(DVSSIZE(pipe), (crtc_h << 16) | crtc_w); I915_WRITE(DVSSCALE(pipe), dvsscale); I915_WRITE(DVSCNTR(pipe), dvscntr); - I915_WRITE(DVSSURF(pipe), obj->gtt_offset); + I915_MODIFY_DISPBASE(DVSSURF(pipe), obj->gtt_offset); POSTING_READ(DVSSURF(pipe)); } @@ -307,7 +307,7 @@ ilk_disable_plane(struct drm_plane *plane) /* Disable the scaler */ I915_WRITE(DVSSCALE(pipe), 0); /* Flush double buffered register updates */ - I915_WRITE(DVSSURF(pipe), 0); + I915_MODIFY_DISPBASE(DVSSURF(pipe), 0); POSTING_READ(DVSSURF(pipe)); } |
