mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-05 14:40:12 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/atomic-helper: support more than one write fence in drm_gem_plane_helper_prepare_fb

Browse Source 
Use dma_resv_get_singleton() here to eventually get more than one write
fence as single fence.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20220321135856.1331-13-christian.koenig@amd.com
This commit is contained in:
Christian König
2021-11-04 15:18:46 +01:00
parent 644704740b
commit c382df714a
1 changed files with 7 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/gpu/drm/drm_gem_atomic_helper.c
View File

@@ -143,25 +143,21 @@
*/
int drm_gem_plane_helper_prepare_fb(struct drm_plane *plane, struct drm_plane_state *state)
{
struct dma_resv_iter cursor;
struct drm_gem_object *obj;
struct dma_fence *fence;
int ret;
if (!state->fb)
return 0;
obj = drm_gem_fb_get_obj(state->fb, 0);
dma_resv_iter_begin(&cursor, obj->resv, false);
dma_resv_for_each_fence_unlocked(&cursor, fence) {
/* TODO: Currently there should be only one write fence, so this
* here works fine. But drm_atomic_set_fence_for_plane() should
* be changed to be able to handle more fences in general for
* multiple BOs per fb anyway. */
dma_fence_get(fence);
break;
}
dma_resv_iter_end(&cursor);
ret = dma_resv_get_singleton(obj->resv, false, &fence);
if (ret)
return ret;
/* TODO: drm_atomic_set_fence_for_plane() should be changed to be able
* to handle more fences in general for multiple BOs per fb.
*/
drm_atomic_set_fence_for_plane(state, fence);
return 0;
}