target/linux/brcm2708/patches-4.14/950-0117-ASoC-bcm2835-Support-additional-samplerates-up-to-38.patch

   1 From d72ed21ec11a87f1fdc0d58f7af1dada3361d57b Mon Sep 17 00:00:00 2001
   2 From: Matthias Reichl <hias@horus.com>
   3 Date: Sun, 7 May 2017 16:19:54 +0200
   4 Subject: [PATCH 117/454] ASoC: bcm2835: Support additional samplerates up to
   5  384kHz
   6
   7 Sample rates are only restricted by the capabilities of the
   8 clock driver, so use SNDRV_PCM_RATE_CONTINUOUS instead of
   9 SNDRV_PCM_RATE_8000_192000.
  10
  11 Tests (eg with pcm5122) have shown that bcm2835 works fine
  12 in 384kHz/32bit stereo mode, so change the maximum allowed
  13 rate from 192kHz to 384kHz.
  14
  15 Signed-off-by: Matthias Reichl <hias@horus.com>
  16 ---
  17  sound/soc/bcm/bcm2835-i2s.c | 8 ++++++--
  18  1 file changed, 6 insertions(+), 2 deletions(-)
  19
  20 --- a/sound/soc/bcm/bcm2835-i2s.c
  21 +++ b/sound/soc/bcm/bcm2835-i2s.c
  22 @@ -765,7 +765,9 @@ static struct snd_soc_dai_driver bcm2835
  23         .playback = {
  24                 .channels_min = 2,
  25                 .channels_max = 2,
  26 -               .rates =        SNDRV_PCM_RATE_8000_192000,
  27 +               .rates =        SNDRV_PCM_RATE_CONTINUOUS,
  28 +               .rate_min =     8000,
  29 +               .rate_max =     384000,
  30                 .formats =      SNDRV_PCM_FMTBIT_S16_LE
  31                                 | SNDRV_PCM_FMTBIT_S24_LE
  32                                 | SNDRV_PCM_FMTBIT_S32_LE
  33 @@ -773,7 +775,9 @@ static struct snd_soc_dai_driver bcm2835
  34         .capture = {
  35                 .channels_min = 2,
  36                 .channels_max = 2,
  37 -               .rates =        SNDRV_PCM_RATE_8000_192000,
  38 +               .rates =        SNDRV_PCM_RATE_CONTINUOUS,
  39 +               .rate_min =     8000,
  40 +               .rate_max =     384000,
  41                 .formats =      SNDRV_PCM_FMTBIT_S16_LE
  42                                 | SNDRV_PCM_FMTBIT_S24_LE
  43                                 | SNDRV_PCM_FMTBIT_S32_LE