[PATCH 2/2] drm/i915: Skip vblank waits for cursor updates when watermarks dont need updating

Maarten Lankhorst
2017-09-19T12:14:25Z

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
---
drivers/gpu/drm/i915/intel_display.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index a85ca19a0c45..8d051256da1e 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -12538,8 +12538,16 @@ static int intel_atomic_commit(struct drm_device *dev,
* FIXME doing watermarks and fb cleanup from a vblank worker
* (assuming we had any) would solve these problems.
*/
- if (INTEL_GEN(dev_priv) < 9)
- state->legacy_cursor_update = false;
+ if (INTEL_GEN(dev_priv) < 9 && state->legacy_cursor_update) {
+ struct intel_crtc_state *new_crtc_state;
+ struct intel_crtc *crtc;
+ int i;
+
+ for_each_new_intel_crtc_in_state(intel_state, crtc, new_crtc_state, i)
+ if (new_crtc_state->wm.need_postvbl_update ||
+ new_crtc_state->update_wm_post)
+ state->legacy_cursor_update = false;
+ }

ret = intel_atomic_prepare_commit(dev, state);
if (ret) {
--
2.14.1