target/linux/brcm2708/patches-4.19/950-0342-ASoC-tlv320aic32x4-Break-out-clock-setting-into-sepa.patch

   1 From 95b3311cbcd29e07af1ee96b6b37c9089567bcff Mon Sep 17 00:00:00 2001
   2 From: Annaliese McDermond <nh6z@nh6z.net>
   3 Date: Mon, 18 Mar 2019 20:37:44 -0700
   4 Subject: [PATCH] ASoC: tlv320aic32x4: Break out clock setting into
   5  separate function
   6
   7 commit bf31cbfbe25001036e1e096b1c260bf871766ea5 upstream.
   8
   9 Break the clock setting logic out from the main hw_params.  It's
  10 rather large and unweildy and makes for a large function.  This
  11 also better enables some of the following changes to the clock
  12 tree access in the driver.
  13
  14 Signed-off-by: Annaliese McDermond <nh6z@nh6z.net>
  15 Signed-off-by: Mark Brown <broonie@kernel.org>
  16 ---
  17  sound/soc/codecs/tlv320aic32x4.c | 26 ++++++++++++++++++--------
  18  1 file changed, 18 insertions(+), 8 deletions(-)
  19
  20 --- a/sound/soc/codecs/tlv320aic32x4.c
  21 +++ b/sound/soc/codecs/tlv320aic32x4.c
  22 @@ -698,17 +698,13 @@ static int aic32x4_set_dai_fmt(struct sn
  23         return 0;
  24  }
  25
  26 -static int aic32x4_hw_params(struct snd_pcm_substream *substream,
  27 -                            struct snd_pcm_hw_params *params,
  28 -                            struct snd_soc_dai *dai)
  29 +static int aic32x4_setup_clocks(struct snd_soc_component *component,
  30 +                               unsigned int sample_rate,
  31 +                               unsigned int parent_rate)
  32  {
  33 -       struct snd_soc_component *component = dai->component;
  34 -       struct aic32x4_priv *aic32x4 = snd_soc_component_get_drvdata(component);
  35 -       u8 iface1_reg = 0;
  36 -       u8 dacsetup_reg = 0;
  37         int i;
  38
  39 -       i = aic32x4_get_divs(aic32x4->sysclk, params_rate(params));
  40 +       i = aic32x4_get_divs(parent_rate, sample_rate);
  41         if (i < 0) {
  42                 printk(KERN_ERR "aic32x4: sampling rate not supported\n");
  43                 return i;
  44 @@ -765,6 +761,20 @@ static int aic32x4_hw_params(struct snd_
  45         snd_soc_component_update_bits(component, AIC32X4_BCLKN,
  46                             AIC32X4_BCLK_MASK, aic32x4_divs[i].blck_N);
  47
  48 +       return 0;
  49 +}
  50 +
  51 +static int aic32x4_hw_params(struct snd_pcm_substream *substream,
  52 +                            struct snd_pcm_hw_params *params,
  53 +                            struct snd_soc_dai *dai)
  54 +{
  55 +       struct snd_soc_component *component = dai->component;
  56 +       struct aic32x4_priv *aic32x4 = snd_soc_component_get_drvdata(component);
  57 +       u8 iface1_reg = 0;
  58 +       u8 dacsetup_reg = 0;
  59 +
  60 +       aic32x4_setup_clocks(component, params_rate(params), aic32x4->sysclk);
  61 +
  62         switch (params_width(params)) {
  63         case 16:
  64                 iface1_reg |= (AIC32X4_WORD_LEN_16BITS <<