This is a note to let you know that I've just added the patch titled
drm/amd/display: Set optimize_pwr_state for DCN31
to the 5.15-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-set-optimize_pwr_state-for-dcn31.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit b82599716deab4c90ff6873216c3e073f05f827a
Author: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
Date: Thu Dec 9 16:05:36 2021 -0500
drm/amd/display: Set optimize_pwr_state for DCN31
[ Upstream commit 33735c1c8d0223170d79dbe166976d9cd7339c7a ]
[Why]
We'll exit optimized power state to do link detection but we won't enter
back into the optimized power state.
This could potentially block s2idle entry depending on the sequencing,
but it also means we're losing some power during the transition period.
[How]
Hook up the handler like DCN21. It was also missed like the
exit_optimized_pwr_state callback.
Fixes: 64b1d0e8d500 ("drm/amd/display: Add DCN3.1 HWSEQ")
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Reviewed-by: Eric Yang <Eric.Yang2@xxxxxxx>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_init.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_init.c
index ac8fb202fd5ee..4e9fe090b770a 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_init.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_init.c
@@ -100,6 +100,7 @@ static const struct hw_sequencer_funcs dcn31_funcs = {
.z10_save_init = dcn31_z10_save_init,
.is_abm_supported = dcn31_is_abm_supported,
.set_disp_pattern_generator = dcn30_set_disp_pattern_generator,
+ .optimize_pwr_state = dcn21_optimize_pwr_state,
.exit_optimized_pwr_state = dcn21_exit_optimized_pwr_state,
.update_visual_confirm_color = dcn20_update_visual_confirm_color,
};
