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drm/i915: Don't call intel_update_fbc from intel_crtc_cursor_set 

Commit 74dff282 exposed this unnecessary call by causing a change in
the failure path on i965 where framebuffer compression will be turned
on and off on every cursor update. If you don't have the xf86-video-intel
fix to avoid the blinking cursor effect, this is very slow.

Symptoms were a far more noticeable cursor blink with every cursor image
change combined with severe slowdown for animated cursors.

Signed-off-by: Brian Rogers <brian@xyzw.org>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Brian Rogers 2009-09-28 15:41:08 -07:00 committed by Eric Anholt
parent 17d857be64
commit 4781f20f29
1 changed files with 0 additions and 4 deletions
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4
drivers/gpu/drm/i915/intel_display.c
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@ -3095,7 +3095,6 @@ static int intel_crtc_cursor_set(struct drm_crtc *crtc,
struct drm_gem_object *bo;
struct drm_i915_gem_object *obj_priv;
int pipe = intel_crtc->pipe;
int plane = intel_crtc->plane;
uint32_t control = (pipe == 0) ? CURACNTR : CURBCNTR;
uint32_t base = (pipe == 0) ? CURABASE : CURBBASE;
uint32_t temp = I915_READ(control);
@ -3182,9 +3181,6 @@ static int intel_crtc_cursor_set(struct drm_crtc *crtc,
drm_gem_object_unreference(intel_crtc->cursor_bo);
}
if ((IS_I965G(dev) || plane == 0))
intel_update_fbc(crtc, &crtc->mode);
mutex_unlock(&dev->struct_mutex);
intel_crtc->cursor_addr = addr;