This is a note to let you know that I've just added the patch titled
drm/amd/display: Handle struct drm_plane_state.ignore_damage_clips
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amd-display-handle-struct-drm_plane_state.ignore_damage_clips.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From ac11060c6d4959e2d4ceada037d2e1e1bfcf6645 Mon Sep 17 00:00:00 2001
From: Thomas Zimmermann <[email protected]>
Date: Wed, 10 Jun 2026 17:18:17 +0200
Subject: drm/amd/display: Handle struct drm_plane_state.ignore_damage_clips
From: Thomas Zimmermann <[email protected]>
commit ac11060c6d4959e2d4ceada037d2e1e1bfcf6645 upstream.
The mode-setting pipeline can disabled damage clippings for a commit
by setting ignore_damage_clips in struct drm_plane_state. The commit
will then do a full display update.
Test the flag in DCN code and do a full update in DCN code if it has
been set.
Commit 35ed38d58257 ("drm: Allow drivers to indicate the damage helpers
to ignore damage clips") introduced ignore_damage_clips to selectively
ignore damage clipping in certain framebuffer changes. This driver does
not do that, but DRM's damage iterator will soon rely on the flag.
Therefore supporting it here as well make sense for consistency.
Signed-off-by: Thomas Zimmermann <[email protected]>
Fixes: 35ed38d58257 ("drm: Allow drivers to indicate the damage helpers to
ignore damage clips")
Cc: Javier Martinez Canillas <[email protected]>
Cc: Thomas Zimmermann <[email protected]>
Cc: Zack Rusin <[email protected]>
Cc: [email protected]
Reviewed-by: Javier Martinez Canillas <[email protected]>
Reviewed-by: Harry Wentland <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
(cherry picked from commit a24019f6480fad5c077b5956eed942c8960323d6)
Cc: <[email protected]> # v6.8+
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -5180,8 +5180,8 @@ static void fill_dc_dirty_rects(struct d
{
struct dm_crtc_state *dm_crtc_state = to_dm_crtc_state(crtc_state);
struct rect *dirty_rects = flip_addrs->dirty_rects;
- u32 num_clips;
- struct drm_mode_rect *clips;
+ u32 num_clips = 0;
+ struct drm_mode_rect *clips = NULL;
bool bb_changed;
bool fb_changed;
u32 i = 0;
@@ -5197,8 +5197,10 @@ static void fill_dc_dirty_rects(struct d
if (new_plane_state->rotation != DRM_MODE_ROTATE_0)
goto ffu;
- num_clips = drm_plane_get_damage_clips_count(new_plane_state);
- clips = drm_plane_get_damage_clips(new_plane_state);
+ if (!new_plane_state->ignore_damage_clips) {
+ num_clips = drm_plane_get_damage_clips_count(new_plane_state);
+ clips = drm_plane_get_damage_clips(new_plane_state);
+ }
if (!dm_crtc_state->mpo_requested) {
if (!num_clips || num_clips > DC_MAX_DIRTY_RECTS)
Patches currently in stable-queue which might be from [email protected] are
queue-6.6/drm-amd-display-handle-struct-drm_plane_state.ignore_damage_clips.patch
