[Intel-gfx] [PATCH 2/4] drm/i915: Do vrr push before sampling the freame counter

Ville Syrjala
2021-10-20T22:33:51Z

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

Do the vrr push before we sample the frame counter to
know when the commit has been latched. Doing these in the
wrong order could lead us to complete the flip before it
has actually happened.

Cc: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
drivers/gpu/drm/i915/display/intel_crtc.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_crtc.c b/drivers/gpu/drm/i915/display/intel_crtc.c
index 254e67141a77..0f8b48b6911c 100644
--- a/drivers/gpu/drm/i915/display/intel_crtc.c
+++ b/drivers/gpu/drm/i915/display/intel_crtc.c
@@ -542,6 +542,9 @@ void intel_pipe_update_end(struct intel_crtc_state *new_crtc_state)

trace_intel_pipe_update_end(crtc, end_vbl_count, scanline_end);

+ /* Send VRR Push to terminate Vblank */
+ intel_vrr_send_push(new_crtc_state);
+
/*
* Incase of mipi dsi command mode, we need to set frame update
* request for every commit.
@@ -568,9 +571,6 @@ void intel_pipe_update_end(struct intel_crtc_state *new_crtc_state)

local_irq_enable();

- /* Send VRR Push to terminate Vblank */
- intel_vrr_send_push(new_crtc_state);
-
if (intel_vgpu_active(dev_priv))
return;

--
2.32.0