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| author | renpanpan <renpanpan@kylinos.cn> | 2026-11-02 17:49:29 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-11-04 12:45:42 -0500 |
| commit | 0de95c96655c8a12df62e47871016f49e5cd8618 (patch) | |
| tree | c75ba87217e32f8e8a59801c56e25d63b661e5a5 /tools/lib/python | |
| parent | 5b3717a14ef602c961a4abeb2ce8039f0394bebb (diff) | |
drm/amdgpu: Only enable HDMI audio if display supports it
The amdgpu legacy DCE audio path (dce_v6/v8/v10) unconditionally calls
audio_enable(pin, true) at the end of afmt_setmode(), regardless of
whether the connected display advertises audio support in its EDID.
This causes a phantom HDMI audio output to appear for displays that
have no audio capability (no basic audio bit, no Audio Data Block in
EDID), because the GPU sets the AUDIO_ENABLED register bit, which
drives the HDA codec's ELDV pin sense, making the codec report the
jack as audio-available.
The radeon, nouveau, and dw-hdmi drivers all gate audio enablement on
display_info.has_audio. Apply the same check to amdgpu's DCE
afmt_setmode functions.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: renpanpan <renpanpan@kylinos.cn>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 842a45c68e0355eea47796551c8761c0c77e8ce0)
Cc: stable@vger.kernel.org
Diffstat (limited to 'tools/lib/python')
0 files changed, 0 insertions, 0 deletions