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drm/amd/display: Preserve original aspect ratio in create stream

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[ Upstream commit 79f3e38f60 ]

[Why]
The original picture aspect ratio in mode struct may have chance be
overwritten with wrong aspect ratio data in create_stream_for_sink().
It will create a different VIC output and cause HDMI compliance test
failed.

[How]
Preserve the original picture aspect ratio data during create the
stream.

Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Tom Chung <chiahsuan.chung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Tom Chung 2024-01-30 15:34:08 +08:00 committed by Greg Kroah-Hartman
parent 9e6bb08964
commit 8bf22f8d1d
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@ -6334,7 +6334,9 @@ create_stream_for_sink(struct amdgpu_dm_connector *aconnector,
if (recalculate_timing) {
freesync_mode = get_highest_refresh_rate_mode(aconnector, false);
drm_mode_copy(&saved_mode, &mode);
saved_mode.picture_aspect_ratio = mode.picture_aspect_ratio;
drm_mode_copy(&mode, freesync_mode);
mode.picture_aspect_ratio = saved_mode.picture_aspect_ratio;
} else {
decide_crtc_timing_for_drm_display_mode(
&mode, preferred_mode, scale);