target/linux/layerscape/patches-5.4/801-audio-0035-MLK-16929-1-ASoC-fsl_sai-add-bitclk_freq.patch

   1 From d40566a2e9aa3c40be313b1fba9d5435c58ffd79 Mon Sep 17 00:00:00 2001
   2 From: Shengjiu Wang <shengjiu.wang@nxp.com>
   3 Date: Thu, 23 Nov 2017 13:32:13 +0800
   4 Subject: [PATCH] MLK-16929-1: ASoC: fsl_sai: add bitclk_freq
   5
   6 Allow set SAI bit clock frequency trough snd_soc_dai_set_sysclk
   7 function call on machine sound drivers.
   8
   9 Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
  10 Signed-off-by: Adrian Alonso <adrian.alonso@nxp.com>
  11 ---
  12  sound/soc/fsl/fsl_sai.c | 9 ++++++++-
  13  sound/soc/fsl/fsl_sai.h | 1 +
  14  2 files changed, 9 insertions(+), 1 deletion(-)
  15
  16 --- a/sound/soc/fsl/fsl_sai.c
  17 +++ b/sound/soc/fsl/fsl_sai.c
  18 @@ -233,11 +233,14 @@ static int fsl_sai_set_dai_sysclk_tr(str
  19  static int fsl_sai_set_dai_sysclk(struct snd_soc_dai *cpu_dai,
  20                 int clk_id, unsigned int freq, int dir)
  21  {
  22 +       struct fsl_sai *sai = snd_soc_dai_get_drvdata(cpu_dai);
  23         int ret;
  24
  25         if (dir == SND_SOC_CLOCK_IN)
  26                 return 0;
  27
  28 +       sai->bitclk_freq = freq;
  29 +
  30         ret = fsl_sai_set_dai_sysclk_tr(cpu_dai, clk_id, freq,
  31                                         FSL_FMT_TRANSMITTER);
  32         if (ret) {
  33 @@ -499,7 +502,11 @@ static int fsl_sai_hw_params(struct snd_
  34                 slot_width = sai->slot_width;
  35
  36         if (!sai->slave_mode[tx]) {
  37 -               ret = fsl_sai_set_bclk(cpu_dai, tx,
  38 +               if (sai->bitclk_freq)
  39 +                       ret = fsl_sai_set_bclk(cpu_dai, tx,
  40 +                                       sai->bitclk_freq);
  41 +               else
  42 +                       ret = fsl_sai_set_bclk(cpu_dai, tx,
  43                                 slots * slot_width * params_rate(params));
  44                 if (ret)
  45                         return ret;
  46 --- a/sound/soc/fsl/fsl_sai.h
  47 +++ b/sound/soc/fsl/fsl_sai.h
  48 @@ -181,6 +181,7 @@ struct fsl_sai {
  49         unsigned int mclk_streams;
  50         unsigned int slots;
  51         unsigned int slot_width;
  52 +       unsigned int bitclk_freq;
  53
  54         struct snd_dmaengine_dai_dma_data dma_params_rx;
  55         struct snd_dmaengine_dai_dma_data dma_params_tx;