From: Solomon Chiu Date: Tue, 27 Jul 2021 16:20:30 +0000 (+0800) Subject: drm/amdgpu: Add preferred mode in modeset when freesync video mode's enabled. X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=46dd2965bdd1c5a4f6499c73ff32e636fa8f9769;p=linux.git drm/amdgpu: Add preferred mode in modeset when freesync video mode's enabled. [Why] With kernel module parameter "freesync_video" is enabled, if the mode is changed to preferred mode(the mode with highest rate), then Freesync fails because the preferred mode is treated as one of freesync video mode, and then be configurated as freesync video mode(fixed refresh rate). [How] Skip freesync fixed rate configurating when modeset to preferred mode. Signed-off-by: Solomon Chiu Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- 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 c0ae73b0691c0..afa96c8f721b7 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -9605,7 +9605,12 @@ static int dm_update_crtc_state(struct amdgpu_display_manager *dm, } else if (amdgpu_freesync_vid_mode && aconnector && is_freesync_video_mode(&new_crtc_state->mode, aconnector)) { - set_freesync_fixed_config(dm_new_crtc_state); + struct drm_display_mode *high_mode; + + high_mode = get_highest_refresh_rate_mode(aconnector, false); + if (!drm_mode_equal(&new_crtc_state->mode, high_mode)) { + set_freesync_fixed_config(dm_new_crtc_state); + } } ret = dm_atomic_get_state(state, &dm_state);