target/linux/mediatek/patches-6.1/860-v6.7-09-ASoC-mediatek-mt7986-add-sample-rate-checker.patch

   1 From 4e229f4264f4be7a6a554487714c0913ef59cf7f Mon Sep 17 00:00:00 2001
   2 From: Maso Huang <maso.huang@mediatek.com>
   3 Date: Tue, 24 Oct 2023 11:50:19 +0800
   4 Subject: [PATCH 9/9] ASoC: mediatek: mt7986: add sample rate checker
   5
   6 mt7986 only supports 8/12/16/24/32/48/96/192 kHz
   7
   8 Signed-off-by: Maso Huang <maso.huang@mediatek.com>
   9 Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
  10 Link: https://lore.kernel.org/r/20231024035019.11732-4-maso.huang@mediatek.com
  11 Signed-off-by: Mark Brown <broonie@kernel.org>
  12 ---
  13  sound/soc/mediatek/mt7986/mt7986-dai-etdm.c | 23 +++++++++++++++++----
  14  1 file changed, 19 insertions(+), 4 deletions(-)
  15
  16 --- a/sound/soc/mediatek/mt7986/mt7986-dai-etdm.c
  17 +++ b/sound/soc/mediatek/mt7986/mt7986-dai-etdm.c
  18 @@ -237,12 +237,27 @@ static int mtk_dai_etdm_hw_params(struct
  19                                   struct snd_pcm_hw_params *params,
  20                                   struct snd_soc_dai *dai)
  21  {
  22 +       unsigned int rate = params_rate(params);
  23         struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
  24
  25 -       mtk_dai_etdm_config(afe, params, dai, SNDRV_PCM_STREAM_PLAYBACK);
  26 -       mtk_dai_etdm_config(afe, params, dai, SNDRV_PCM_STREAM_CAPTURE);
  27 -
  28 -       return 0;
  29 +       switch (rate) {
  30 +       case 8000:
  31 +       case 12000:
  32 +       case 16000:
  33 +       case 24000:
  34 +       case 32000:
  35 +       case 48000:
  36 +       case 96000:
  37 +       case 192000:
  38 +               mtk_dai_etdm_config(afe, params, dai, SNDRV_PCM_STREAM_PLAYBACK);
  39 +               mtk_dai_etdm_config(afe, params, dai, SNDRV_PCM_STREAM_CAPTURE);
  40 +               return 0;
  41 +       default:
  42 +               dev_err(afe->dev,
  43 +                       "Sample rate %d invalid. Supported rates: 8/12/16/24/32/48/96/192 kHz\n",
  44 +                       rate);
  45 +               return -EINVAL;
  46 +       }
  47  }
  48
  49  static int mtk_dai_etdm_trigger(struct snd_pcm_substream *substream, int cmd,