On 9/1/2020 4:53 PM, Ville Syrjälä wrote:
On Fri, Aug 07, 2020 at 03:05:48PM +0530, Karthik B S wrote:
Since the flip done event will be sent in the flip_done_handler,
no need to add the event to the list and delay it for later.
v2: -Moved the async check above vblank_get as it
was causing issues for PSR.
v3: -No need to wait for vblank to pass, as this wait was causing a
16ms delay once every few flips.
v4: -Rebased.
v5: -Rebased.
v6: -Rebased.
Signed-off-by: Karthik B S <karthik.b.s@xxxxxxxxx>
Signed-off-by: Vandita Kulkarni <vandita.kulkarni@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_sprite.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_sprite.c b/drivers/gpu/drm/i915/display/intel_sprite.c
index c26ca029fc0a..2b2d96c59d7f 100644
--- a/drivers/gpu/drm/i915/display/intel_sprite.c
+++ b/drivers/gpu/drm/i915/display/intel_sprite.c
@@ -93,6 +93,9 @@ void intel_pipe_update_start(const struct intel_crtc_state *new_crtc_state)
DEFINE_WAIT(wait);
u32 psr_status;
+ if (new_crtc_state->uapi.async_flip)
+ goto irq_disable;
We shouldn't really need the irq disable at all if we don't do the
vblank evade. And if we only write ctl+surf then atomicity is already
guaranteed by the hw.
Thanks for the review.
Sure, will return directly after this check.
Thanks,
Karthik.B.S
+
vblank_start = adjusted_mode->crtc_vblank_start;
if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)
vblank_start = DIV_ROUND_UP(vblank_start, 2);
@@ -206,7 +209,7 @@ void intel_pipe_update_end(struct intel_crtc_state *new_crtc_state)
* Would be slightly nice to just grab the vblank count and arm the
* event outside of the critical section - the spinlock might spin for a
* while ... */
- if (new_crtc_state->uapi.event) {
+ if (new_crtc_state->uapi.event && !new_crtc_state->uapi.async_flip) {
drm_WARN_ON(&dev_priv->drm,
drm_crtc_vblank_get(&crtc->base) != 0);
@@ -220,6 +223,9 @@ void intel_pipe_update_end(struct intel_crtc_state *new_crtc_state)
local_irq_enable();
+ if (new_crtc_state->uapi.async_flip)
+ return;
+
if (intel_vgpu_active(dev_priv))
return;
--
2.22.0
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