OERV-BSP/kernel-spacemit-k1
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k1:audio: add playback_only support

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avoid NULL pointer issue on some playback_only board

Change-Id: I90b75fa27087f3d9f3dfbf490c4008364ca84353
This commit is contained in:
weijinmei
2025-07-31 20:37:04 +08:00
parent e8c154f25e
commit fedb75697d
1 changed files with 8 additions and 1 deletions
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9
sound/soc/spacemit/spacemit-snd-pcm-dma.c
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@@ -1053,6 +1053,7 @@ static int spacemit_snd_pcm_new(struct snd_soc_component *component, struct snd_
struct snd_card *card = rtd->card->snd_card;
struct snd_pcm *pcm = rtd->pcm;
struct snd_pcm_substream *substream;
struct snd_soc_dai_link *dai_link = rtd->dai_link;
pr_debug("%s enter, dev=%s\n", __FUNCTION__, dev_name(rtd->dev));
@@ -1066,12 +1067,18 @@ static int spacemit_snd_pcm_new(struct snd_soc_component *component, struct snd_
pr_err("%s: get dev error\n", __FUNCTION__);
return -1;
}
if (dev->dmadata->dma_id == DMA_HDMI) {
if (dai_link->playback_only) {
chan_num = 1;
pr_debug("%s playback_only, dev=%s\n", __FUNCTION__, dev_name(rtd->dev));
} else if (dai_link->capture_only) {
pr_err("%s not support capture_only, dev=%s\n", __FUNCTION__, dev_name(rtd->dev));
ret = -EINVAL;
return ret;
} else {
chan_num = 2;
}
dev->dmadata[0].stream = SNDRV_PCM_STREAM_PLAYBACK;
dev->dmadata[1].stream = SNDRV_PCM_STREAM_CAPTURE;