From 809186360954360c4cb4d7a96616db4625c846fd Mon Sep 17 00:00:00 2001
From: Aric Cyr <aric.cyr@amd.com>
Date: Fri, 26 Aug 2022 17:53:34 -0400
Subject: drm/amd/display: Don't adjust VRR unnecessarily
Git-commit: 34955a1e797d074e72d0ac6a514d934d8fe80da1
Patch-mainline: v6.1-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225 jsc#PED-2849
[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>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 10 ----------
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 1 -
drivers/gpu/drm/amd/display/dc/core/dc.c | 3 +++
3 files changed, 3 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index ce670ab61ad8..23d2a5c12545 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -7360,11 +7360,6 @@ 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,
@@ -7373,7 +7368,6 @@ 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)
@@ -7436,10 +7430,6 @@ 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;
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
index b44faaad9b0b..b5ce15c43bcc 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
@@ -681,7 +681,6 @@ struct dm_crtc_state {
int crc_skip_count;
- bool freesync_timing_changed;
bool freesync_vrr_info_changed;
bool dsc_force_changed;
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 9860bf38c547..7481801c6d7c 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -401,6 +401,9 @@ bool dc_stream_adjust_vmin_vmax(struct dc *dc,
{
int i;
+ if (memcmp(adjust, &stream->adjust, sizeof(struct dc_crtc_timing_adjust)) == 0)
+ return true;
+
stream->adjust.v_total_max = adjust->v_total_max;
stream->adjust.v_total_mid = adjust->v_total_mid;
stream->adjust.v_total_mid_frame_num = adjust->v_total_mid_frame_num;
--
2.38.1