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drm/amd/display: Allow pflips from a framebuffer to itself 

[Why]
IGT expects that pageflips can be triggered with the same
framebuffer before and after the commit

[How]
Expand the definition of pageflip to include any change
with an old framebuffer and a new framebuffer, even if they're
the same

Signed-off-by: David Francis <David.Francis@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
David Francis 2019-02-06 14:01:29 -05:00 committed by Alex Deucher
parent 0d579c7e25
commit 34bafd27e3
1 changed files with 4 additions and 5 deletions
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9
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
View File

@ -4695,7 +4695,7 @@ static void amdgpu_dm_commit_planes(struct drm_atomic_state *state,
struct drm_crtc_state *new_crtc_state;
struct drm_framebuffer *fb = new_plane_state->fb;
struct amdgpu_framebuffer *afb = to_amdgpu_framebuffer(fb);
bool framebuffer_changed;
bool plane_needs_flip;
struct dc_plane_state *dc_plane;
struct dm_plane_state *dm_new_plane_state = to_dm_plane_state(new_plane_state);
@ -4712,12 +4712,11 @@ static void amdgpu_dm_commit_planes(struct drm_atomic_state *state,
dc_plane = dm_new_plane_state->dc_state;
framebuffer_changed = old_plane_state->fb &&
old_plane_state->fb != new_plane_state->fb;
plane_needs_flip = old_plane_state->fb && new_plane_state->fb;
pflip_present = pflip_present || framebuffer_changed;
pflip_present = pflip_present || plane_needs_flip;
if (framebuffer_changed) {
if (plane_needs_flip) {
/*
* TODO This might fail and hence better not used, wait
* explicitly on fences instead