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drm/amd/display: Don't adjust VRR unnecessarily

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[why]
Do not need to spend time reprogramming DRR if there were no updates to
the parameters.

[how]
Compare the current stream state to the requested one to determine if an
update is required.

In amdgpu_dm the timing_changed flag is set but never used so can remove it.
Similarly, the stream update for VRR is done after dc_commit and should
not update its adjust field until after the update is completed.  The
adjust field is managed by dc_stream_adjust_vmin_vmax and should not be
manually updated in amdgpu_dm.

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Pavle Kotarac <Pavle.Kotarac@amd.com>
Signed-off-by: Aric Cyr <aric.cyr@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Aric Cyr
2022-08-26 17:53:34 -04:00
committed by Alex Deucher
parent 4bd09d7481
commit 34955a1e79
3 changed files with 3 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@@ -7370,11 +7370,6 @@ static void update_freesync_state_on_stream(
&vrr_infopacket,
pack_sdp_v1_3);
new_crtc_state->freesync_timing_changed |=
(memcmp(&acrtc->dm_irq_params.vrr_params.adjust,
&vrr_params.adjust,
sizeof(vrr_params.adjust)) != 0);
new_crtc_state->freesync_vrr_info_changed |=
(memcmp(&new_crtc_state->vrr_infopacket,
&vrr_infopacket,
@@ -7383,7 +7378,6 @@ static void update_freesync_state_on_stream(
acrtc->dm_irq_params.vrr_params = vrr_params;
new_crtc_state->vrr_infopacket = vrr_infopacket;
new_stream->adjust = acrtc->dm_irq_params.vrr_params.adjust;
new_stream->vrr_infopacket = vrr_infopacket;
if (new_crtc_state->freesync_vrr_info_changed)
@@ -7446,10 +7440,6 @@ static void update_stream_irq_parameters(
new_stream,
&config, &vrr_params);
new_crtc_state->freesync_timing_changed |=
(memcmp(&acrtc->dm_irq_params.vrr_params.adjust,
&vrr_params.adjust, sizeof(vrr_params.adjust)) != 0);
new_crtc_state->freesync_config = config;
/* Copy state for access from DM IRQ handler */
acrtc->dm_irq_params.freesync_config = config;