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ASoC: SOF: pcm: Set the PCM device name for HDMI #5557

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Merged
ujfalusi merged 1 commit into from
Oct 27, 2025
Merged

ASoC: SOF: pcm: Set the PCM device name for HDMI #5557

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18 changes: 18 additions & 0 deletions sound/soc/sof/pcm.c
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Original file line number Diff line number Diff line change
Expand Up @@ -672,6 +672,24 @@ static int sof_pcm_new(struct snd_soc_component *component,
snd_pcm_set_managed_buffer(pcm->streams[stream].substream,
SNDRV_DMA_TYPE_DEV_SG, sdev->dev,
0, le32_to_cpu(caps->buffer_size_max));

/* Set the PCM device name for HDMI playback */
if (!strncmp(pcm->id, "HDMI", 4)) {
int hdmi_idx;

/*
* Make sure that the name is in"HDMI<SPACE>x" format as this is
* expected by user space.
* See alsa-lib's __snd_pcm_info_eld_fixup_check() which is
* guarding the __snd_pcm_info_eld_fixup() in
* snd_ctl_hw_pcm_info() and snd_pcm_hw_info() library functions
*/
if (sscanf(pcm->id, "HDMI%d", &hdmi_idx) == 1)
snprintf(pcm->name, sizeof(pcm->name), "HDMI %d",
hdmi_idx);
else
strscpy(pcm->name, pcm->id, sizeof(pcm->name));
}
capture:
stream = SNDRV_PCM_STREAM_CAPTURE;

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