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ASoC: SOF: pcm: Set the PCM device name for HDMI

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User space (alsa-lib) uses the PCM device name to detect HDMI devices, the
name is expected to be in form of 'HDMI'+<space>+number.
The PCM device name is not configured in ASoC, only the PCM id is set based
on the loaded topology.

Detect the HDMI PCM playback devices and configure the name to help user
space to handle HDMI PCMs correctly.

aplay -l | grep HDMI (Audio capable monitor connected)
Before the change:
card 0: sofhdadsp [sof-hda-dsp], device 3: HDMI1 (*) []
card 0: sofhdadsp [sof-hda-dsp], device 4: HDMI2 (*) []
card 0: sofhdadsp [sof-hda-dsp], device 5: HDMI3 (*) []

after the change:
card 0: sofhdadsp [sof-hda-dsp], device 3: HDMI1 (*) [DELL P1917S]
card 0: sofhdadsp [sof-hda-dsp], device 4: HDMI2 (*) [HDMI 2]
card 0: sofhdadsp [sof-hda-dsp], device 5: HDMI3 (*) [HDMI 3]

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://patch.msgid.link/20251029105134.1342-1-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Peter Ujfalusi 2025-10-29 12:51:34 +02:00 • committed by Mark Brown
commit 541aecd343
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