drm/amd/display: Fix timing not changning when freesync video is enabled

[Why&How]
Switching between certain modes that are freesync video modes and those
are not freesync video modes result in timing not changing as seen by
the monitor due to incorrect timing being driven.

The issue is fixed by ensuring that when a non freesync video mode is
set, we reset the freesync status on the crtc.

Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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 ff0085c455e368b28d5ed236e7aac302c03993f2..bbe4486fda42447f58f6665e4b64070335b384a5 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -9073,6 +9073,13 @@ static int dm_update_crtc_state(struct amdgpu_display_manager *dm,
                if (!dm_old_crtc_state->stream)
                        goto skip_modeset;
 
+               /* Unset freesync video if it was active before */
+               if (dm_old_crtc_state->freesync_config.state == VRR_STATE_ACTIVE_FIXED) {
+                       dm_new_crtc_state->freesync_config.state = VRR_STATE_INACTIVE;
+                       dm_new_crtc_state->freesync_config.fixed_refresh_in_uhz = 0;
+               }
+
+               /* Now check if we should set freesync video mode */
                if (amdgpu_freesync_vid_mode && dm_new_crtc_state->stream &&
                    is_timing_unchanged_for_freesync(new_crtc_state,
                                                     old_crtc_state)) {