target/linux/at91/patches-5.15/192-ASoC-codecs-ad193x-add-support-for-96kHz-and-192kHz-.patch

   1 From 1c906a59a60887e1b997ebab63f19f33a1c69a3e Mon Sep 17 00:00:00 2001
   2 From: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
   3 Date: Tue, 3 Aug 2021 13:48:25 +0300
   4 Subject: [PATCH 192/247] ASoC: codecs: ad193x: add support for 96kHz and
   5  192kHz playback rates
   6
   7 ad193x devices support 96KHz and 192KHz sampling rates, when PLL/MCLK is
   8 referenced to 48kHz.
   9 Tested on ad1934.
  10
  11 Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
  12 Link: https://lore.kernel.org/r/20210803104825.2198335-1-codrin.ciubotariu@microchip.com
  13 Signed-off-by: Mark Brown <broonie@kernel.org>
  14 ---
  15  sound/soc/codecs/ad193x.c | 30 ++++++++++++++++++++++++++++--
  16  sound/soc/codecs/ad193x.h |  4 ++++
  17  2 files changed, 32 insertions(+), 2 deletions(-)
  18
  19 --- a/sound/soc/codecs/ad193x.c
  20 +++ b/sound/soc/codecs/ad193x.c
  21 @@ -316,6 +316,13 @@ static int ad193x_hw_params(struct snd_p
  22         int word_len = 0, master_rate = 0;
  23         struct snd_soc_component *component = dai->component;
  24         struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(component);
  25 +       bool is_playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
  26 +       u8 dacc0;
  27 +
  28 +       dev_dbg(dai->dev, "%s() rate=%u format=%#x width=%u channels=%u\n",
  29 +               __func__, params_rate(params), params_format(params),
  30 +               params_width(params), params_channels(params));
  31 +
  32
  33         /* bit size */
  34         switch (params_width(params)) {
  35 @@ -346,6 +353,25 @@ static int ad193x_hw_params(struct snd_p
  36                 break;
  37         }
  38
  39 +       if (is_playback) {
  40 +               switch (params_rate(params)) {
  41 +               case 48000:
  42 +                       dacc0 = AD193X_DAC_SR_48;
  43 +                       break;
  44 +               case 96000:
  45 +                       dacc0 = AD193X_DAC_SR_96;
  46 +                       break;
  47 +               case 192000:
  48 +                       dacc0 = AD193X_DAC_SR_192;
  49 +                       break;
  50 +               default:
  51 +                       dev_err(dai->dev, "invalid sampling rate: %d\n", params_rate(params));
  52 +                       return -EINVAL;
  53 +               }
  54 +
  55 +               regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL0, AD193X_DAC_SR_MASK, dacc0);
  56 +       }
  57 +
  58         regmap_update_bits(ad193x->regmap, AD193X_PLL_CLK_CTRL0,
  59                             AD193X_PLL_INPUT_MASK, master_rate);
  60
  61 @@ -385,7 +411,7 @@ static struct snd_soc_dai_driver ad193x_
  62                 .stream_name = "Playback",
  63                 .channels_min = 2,
  64                 .channels_max = 8,
  65 -               .rates = SNDRV_PCM_RATE_48000,
  66 +               .rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000,
  67                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
  68                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
  69         },
  70 @@ -407,7 +433,7 @@ static struct snd_soc_dai_driver ad193x_
  71                 .stream_name = "Playback",
  72                 .channels_min = 2,
  73                 .channels_max = 8,
  74 -               .rates = SNDRV_PCM_RATE_48000,
  75 +               .rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000,
  76                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
  77                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
  78         },
  79 --- a/sound/soc/codecs/ad193x.h
  80 +++ b/sound/soc/codecs/ad193x.h
  81 @@ -37,6 +37,10 @@ int ad193x_probe(struct device *dev, str
  82  #define AD193X_PLL_CLK_SRC_MCLK        (1 << 1)
  83  #define AD193X_DAC_CTRL0        0x02
  84  #define AD193X_DAC_POWERDOWN           0x01
  85 +#define AD193X_DAC_SR_MASK           0x06
  86 +#define AD193X_DAC_SR_48       (0 << 1)
  87 +#define AD193X_DAC_SR_96       (1 << 1)
  88 +#define AD193X_DAC_SR_192      (2 << 1)
  89  #define AD193X_DAC_SERFMT_MASK         0xC0
  90  #define AD193X_DAC_SERFMT_STEREO       (0 << 6)
  91  #define AD193X_DAC_SERFMT_TDM          (1 << 6)