Re: [PATCH RESEND v9 2/2] drm/amdgpu: Enable async flip on overlay planes

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Hi Harry, thanks for the reply!

Em 11/11/2024 18:10, Harry Wentland escreveu:
On 2024-11-01 14:23, André Almeida wrote:
amdgpu can handle async flips on overlay planes, so allow it for atomic
async checks.

Signed-off-by: André Almeida <andrealmeid@xxxxxxxxxx>
---
  drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c | 3 +--
  1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
index 495e3cd70426db0182cb2811bc6d5d09f52f8a4b..4c6aed5ca777d76245f5f2865046f0f598be342a 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
@@ -1266,8 +1266,7 @@ static int amdgpu_dm_plane_atomic_async_check(struct drm_plane *plane,
  	struct drm_plane_state *new_plane_state;
  	struct dm_crtc_state *dm_new_crtc_state;
- /* Only support async updates on cursor planes. */
-	if (plane->type != DRM_PLANE_TYPE_CURSOR)
+	if (plane->type != DRM_PLANE_TYPE_CURSOR && plane->type != DRM_PLANE_TYPE_OVERLAY)

This wouldn't just be called for flips, though, but could also be
called for updates on a plane, right? Those could cause for problems.


I see, I think you are right and can be called from a non-flip commmit.

There's also nothing special about OVERLAY vs PRIMARY planes, other
than that amdgpu needs a PRIMARY plane, IIRC. So updates on PRIMARY
planes should also work (or not).


Right, the PRIMARY plane type is already supported for every DRM driver in the API so I didn't explicitly added it here.

Maybe this should check that we're actually dealing with a simple
flip, i.e., a simple surface address update.


Right, that makes sense to me, thanks!

Harry

  		return -EINVAL;
new_plane_state = drm_atomic_get_new_plane_state(state, plane);






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