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Subject[PATCH v2 3/3] ASoC: mediatek: mt7986: add sample rate checker
Date
mt7986 only supports 8/12/16/24/32/48/96/192 kHz

Signed-off-by: Maso Huang <maso.huang@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
sound/soc/mediatek/mt7986/mt7986-dai-etdm.c | 23 +++++++++++++++++----
1 file changed, 19 insertions(+), 4 deletions(-)

diff --git a/sound/soc/mediatek/mt7986/mt7986-dai-etdm.c b/sound/soc/mediatek/mt7986/mt7986-dai-etdm.c
index e523d33846fe..d57971413a04 100644
--- a/sound/soc/mediatek/mt7986/mt7986-dai-etdm.c
+++ b/sound/soc/mediatek/mt7986/mt7986-dai-etdm.c
@@ -237,12 +237,27 @@ static int mtk_dai_etdm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
+ unsigned int rate = params_rate(params);
struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);

- mtk_dai_etdm_config(afe, params, dai, SNDRV_PCM_STREAM_PLAYBACK);
- mtk_dai_etdm_config(afe, params, dai, SNDRV_PCM_STREAM_CAPTURE);
-
- return 0;
+ switch (rate) {
+ case 8000:
+ case 12000:
+ case 16000:
+ case 24000:
+ case 32000:
+ case 48000:
+ case 96000:
+ case 192000:
+ mtk_dai_etdm_config(afe, params, dai, SNDRV_PCM_STREAM_PLAYBACK);
+ mtk_dai_etdm_config(afe, params, dai, SNDRV_PCM_STREAM_CAPTURE);
+ return 0;
+ default:
+ dev_err(afe->dev,
+ "Sample rate %d invalid. Supported rates: 8/12/16/24/32/48/96/192 kHz\n",
+ rate);
+ return -EINVAL;
+ }
}

static int mtk_dai_etdm_trigger(struct snd_pcm_substream *substream, int cmd,
--
2.18.0
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