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drm/i915: Kill the 830 MI_OVERLAY_OFF workaround 

Now that we're disabling L2 clock gating MI_OVERLAY_OFF actually works
on 830, so let's use it.

v2: Nuke the unused dev_priv variable

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161222195222.9618-1-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Ville Syrjälä 2016-12-22 21:52:22 +02:00
parent e840fd3108
commit 4c5cfcc301
1 changed files with 6 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/gpu/drm/i915/intel_overlay.c
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@ -407,7 +407,6 @@ static void intel_overlay_off_tail(struct i915_gem_active *active,
/* overlay needs to be disabled in OCMD reg */
static int intel_overlay_off(struct intel_overlay *overlay)
{
struct drm_i915_private *dev_priv = overlay->i915;
struct drm_i915_gem_request *req;
struct intel_ring *ring;
u32 flip_addr = overlay->flip_addr;
@ -432,23 +431,17 @@ static int intel_overlay_off(struct intel_overlay *overlay)
}
ring = req->ring;
/* wait for overlay to go idle */
intel_ring_emit(ring, MI_OVERLAY_FLIP | MI_OVERLAY_CONTINUE);
intel_ring_emit(ring, flip_addr);
intel_ring_emit(ring, MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
/* turn overlay off */
if (IS_I830(dev_priv)) {
/* Workaround: Don't disable the overlay fully, since otherwise
* it dies on the next OVERLAY_ON cmd. */
intel_ring_emit(ring, MI_NOOP);
intel_ring_emit(ring, MI_NOOP);
intel_ring_emit(ring, MI_NOOP);
} else {
intel_ring_emit(ring, MI_OVERLAY_FLIP | MI_OVERLAY_OFF);
intel_ring_emit(ring, flip_addr);
intel_ring_emit(ring,
MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
}
intel_ring_emit(ring, MI_OVERLAY_FLIP | MI_OVERLAY_OFF);
intel_ring_emit(ring, flip_addr);
intel_ring_emit(ring, MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
intel_ring_advance(ring);
intel_overlay_flip_prepare(overlay, NULL);