target/linux/at91/patches-5.10/192-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 diff --git a/sound/soc/codecs/ad193x.c b/sound/soc/codecs/ad193x.c
  20 index f37ab7eda615..278a55af158b 100644
  21 --- a/sound/soc/codecs/ad193x.c
  22 +++ b/sound/soc/codecs/ad193x.c
  23 @@ -316,6 +316,13 @@ static int ad193x_hw_params(struct snd_pcm_substream *substream,
  24         int word_len = 0, master_rate = 0;
  25         struct snd_soc_component *component = dai->component;
  26         struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(component);
  27 +       bool is_playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
  28 +       u8 dacc0;
  29 +
  30 +       dev_dbg(dai->dev, "%s() rate=%u format=%#x width=%u channels=%u\n",
  31 +               __func__, params_rate(params), params_format(params),
  32 +               params_width(params), params_channels(params));
  33 +
  34
  35         /* bit size */
  36         switch (params_width(params)) {
  37 @@ -346,6 +353,25 @@ static int ad193x_hw_params(struct snd_pcm_substream *substream,
  38                 break;
  39         }
  40
  41 +       if (is_playback) {
  42 +               switch (params_rate(params)) {
  43 +               case 48000:
  44 +                       dacc0 = AD193X_DAC_SR_48;
  45 +                       break;
  46 +               case 96000:
  47 +                       dacc0 = AD193X_DAC_SR_96;
  48 +                       break;
  49 +               case 192000:
  50 +                       dacc0 = AD193X_DAC_SR_192;
  51 +                       break;
  52 +               default:
  53 +                       dev_err(dai->dev, "invalid sampling rate: %d\n", params_rate(params));
  54 +                       return -EINVAL;
  55 +               }
  56 +
  57 +               regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL0, AD193X_DAC_SR_MASK, dacc0);
  58 +       }
  59 +
  60         regmap_update_bits(ad193x->regmap, AD193X_PLL_CLK_CTRL0,
  61                             AD193X_PLL_INPUT_MASK, master_rate);
  62
  63 @@ -385,7 +411,7 @@ static struct snd_soc_dai_driver ad193x_dai = {
  64                 .stream_name = "Playback",
  65                 .channels_min = 2,
  66                 .channels_max = 8,
  67 -               .rates = SNDRV_PCM_RATE_48000,
  68 +               .rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000,
  69                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
  70                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
  71         },
  72 @@ -407,7 +433,7 @@ static struct snd_soc_dai_driver ad193x_no_adc_dai = {
  73                 .stream_name = "Playback",
  74                 .channels_min = 2,
  75                 .channels_max = 8,
  76 -               .rates = SNDRV_PCM_RATE_48000,
  77 +               .rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000,
  78                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
  79                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
  80         },
  81 diff --git a/sound/soc/codecs/ad193x.h b/sound/soc/codecs/ad193x.h
  82 index 377854712c20..61f4648861d5 100644
  83 --- a/sound/soc/codecs/ad193x.h
  84 +++ b/sound/soc/codecs/ad193x.h
  85 @@ -37,6 +37,10 @@ int ad193x_probe(struct device *dev, struct regmap *regmap,
  86  #define AD193X_PLL_CLK_SRC_MCLK        (1 << 1)
  87  #define AD193X_DAC_CTRL0        0x02
  88  #define AD193X_DAC_POWERDOWN           0x01
  89 +#define AD193X_DAC_SR_MASK           0x06
  90 +#define AD193X_DAC_SR_48       (0 << 1)
  91 +#define AD193X_DAC_SR_96       (1 << 1)
  92 +#define AD193X_DAC_SR_192      (2 << 1)
  93  #define AD193X_DAC_SERFMT_MASK         0xC0
  94  #define AD193X_DAC_SERFMT_STEREO       (0 << 6)
  95  #define AD193X_DAC_SERFMT_TDM          (1 << 6)
  96 --
  97 2.32.0
  98