ASoC: mediatek: mt7986: add sample rate checker

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>
Link: https://lore.kernel.org/r/20231024035019.11732-4-maso.huang@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/mediatek/mt7986/mt7986-dai-etdm.c b/sound/soc/mediatek/mt7986/mt7986-dai-etdm.c
index e523d33846fe0b1eb3e9b3ae6260af98feb6cdf9..d57971413a044fe3f3e2539a876f2ab8ccd639eb 100644 (file)
--- 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,