target/linux/layerscape/patches-5.4/801-audio-0013-MLK-10611-1-ASoC-fsl-sai-Just-one-device-can-playbac.patch

   1 From 0ab3461b68ccc1d4ffb37dbc7f2e57adc8aed0fb Mon Sep 17 00:00:00 2001
   2 From: Zidan Wang <zidan.wang@freescale.com>
   3 Date: Fri, 10 Apr 2015 09:52:36 +0800
   4 Subject: [PATCH] MLK-10611-1 ASoC: fsl-sai: Just one device can
   5  playback(captrue) when using the same SAI
   6
   7 Just one device can playback(captrue) when using the same SAI.
   8
   9 Signed-off-by: Zidan Wang <zidan.wang@freescale.com>
  10 (cherry picked from commit 7981a488c4da440db21f0544b519b44636a0cabb)
  11 ---
  12  sound/soc/fsl/fsl_sai.c | 10 ++++++++++
  13  sound/soc/fsl/fsl_sai.h |  1 +
  14  2 files changed, 11 insertions(+)
  15
  16 --- a/sound/soc/fsl/fsl_sai.c
  17 +++ b/sound/soc/fsl/fsl_sai.c
  18 @@ -605,6 +605,11 @@ static int fsl_sai_startup(struct snd_pc
  19         bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
  20         int ret;
  21
  22 +       if (sai->is_stream_opened[tx])
  23 +               return -EBUSY;
  24 +       else
  25 +               sai->is_stream_opened[tx] = true;
  26 +
  27         regmap_update_bits(sai->regmap, FSL_SAI_xCR3(tx), FSL_SAI_CR3_TRCE,
  28                            FSL_SAI_CR3_TRCE);
  29
  30 @@ -621,6 +626,11 @@ static void fsl_sai_shutdown(struct snd_
  31         bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
  32
  33         regmap_update_bits(sai->regmap, FSL_SAI_xCR3(tx), FSL_SAI_CR3_TRCE, 0);
  34 +
  35 +       if (sai->is_stream_opened[tx]) {
  36 +               regmap_update_bits(sai->regmap, FSL_SAI_xCR3(tx), FSL_SAI_CR3_TRCE, 0);
  37 +               sai->is_stream_opened[tx] = false;
  38 +       }
  39  }
  40
  41  static const struct snd_soc_dai_ops fsl_sai_pcm_dai_ops = {
  42 --- a/sound/soc/fsl/fsl_sai.h
  43 +++ b/sound/soc/fsl/fsl_sai.h
  44 @@ -137,6 +137,7 @@ struct fsl_sai {
  45         bool is_dsp_mode;
  46         bool sai_on_imx;
  47         bool synchronous[2];
  48 +       bool is_stream_opened[2];
  49
  50         unsigned int mclk_id[2];
  51         unsigned int mclk_streams;