Commit 7f2b5237 authored by Melissa Wen's avatar Melissa Wen Committed by Alex Deucher
Browse files

drm/amd/display: restore invalid MSA timing check for freesync 

This restores the original behavior that gets min/max freq from EDID and
only set DP/eDP connector as freesync capable if "sink device is capable
of rendering incoming video stream without MSA timing parameters", i.e.,
`allow_invalid_MSA_timing_params` is true. The condition was mistakenly
removed by 0159f88a ("drm/amd/display: remove redundant freesync
parser for DP").

CC: Mario Limonciello <mario.limonciello@amd.com>
CC: Alex Hung <alex.hung@amd.com>
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/3915


Fixes: 0159f88a ("drm/amd/display: remove redundant freesync parser for DP")
Reviewed-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarMelissa Wen <mwen@igalia.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
parent 9078a5bf

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

+8 −4
Original line number Diff line number Diff line
@@ -12326,10 +12326,14 @@ void amdgpu_dm_update_freesync_caps(struct drm_connector *connector, 


	if (edid && (sink->sink_signal == SIGNAL_TYPE_DISPLAY_PORT ||

		     sink->sink_signal == SIGNAL_TYPE_EDP)) {

		if (amdgpu_dm_connector->dc_link &&

		    amdgpu_dm_connector->dc_link->dpcd_caps.allow_invalid_MSA_timing_param) {

			amdgpu_dm_connector->min_vfreq = connector->display_info.monitor_range.min_vfreq;

			amdgpu_dm_connector->max_vfreq = connector->display_info.monitor_range.max_vfreq;

			if (amdgpu_dm_connector->max_vfreq - amdgpu_dm_connector->min_vfreq > 10)

				freesync_capable = true;

		}



		parse_amd_vsdb(amdgpu_dm_connector, edid, &vsdb_info);



		if (vsdb_info.replay_mode) {