This is a note to let you know that I've just added the patch titled
drm/amd/display: Enable fast plane updates on DCN3.2 and above
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-enable-fast-plane-updates-on-dcn3.2-and-above.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 <stable@xxxxxxxxxxxxxxx> know about it.
>From 435f5b369657cffee4b04db1f5805b48599f4dbe Mon Sep 17 00:00:00 2001
From: Tianci Yin <tianci.yin@xxxxxxx>
Date: Wed, 1 Nov 2023 09:47:13 +0800
Subject: drm/amd/display: Enable fast plane updates on DCN3.2 and above
From: Tianci Yin <tianci.yin@xxxxxxx>
commit 435f5b369657cffee4b04db1f5805b48599f4dbe upstream.
[WHY]
When cursor moves across screen boarder, lag cursor observed,
since subvp settings need to sync up with vblank that causes
cursor updates being delayed.
[HOW]
Enable fast plane updates on DCN3.2 to fix it.
Cc: Mario Limonciello <mario.limonciello@xxxxxxx>
Cc: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@xxxxxxx>
Acked-by: Alex Hung <alex.hung@xxxxxxx>
Signed-off-by: Tianci Yin <tianci.yin@xxxxxxx>
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 8 ++++----
1 file changed, 4 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
@@ -9541,14 +9541,14 @@ static bool should_reset_plane(struct dr
struct drm_plane *other;
struct drm_plane_state *old_other_state, *new_other_state;
struct drm_crtc_state *new_crtc_state;
+ struct amdgpu_device *adev = drm_to_adev(plane->dev);
int i;
/*
- * TODO: Remove this hack once the checks below are sufficient
- * enough to determine when we need to reset all the planes on
- * the stream.
+ * TODO: Remove this hack for all asics once it proves that the
+ * fast updates works fine on DCN3.2+.
*/
- if (state->allow_modeset)
+ if (adev->ip_versions[DCE_HWIP][0] < IP_VERSION(3, 2, 0) && state->allow_modeset)
return true;
/* Exit early if we know that we're adding or removing the plane. */
Patches currently in stable-queue which might be from tianci.yin@xxxxxxx are
queue-6.6/drm-amd-display-enable-fast-plane-updates-on-dcn3.2-and-above.patch
