target/linux/layerscape/patches-5.4/801-audio-0021-ASoC-fsl_sai-handle-slave-mode-per-TX-RX-direction.patch

   1 From 06d8069b308a1655e0c248b6bd556e63d9b38099 Mon Sep 17 00:00:00 2001
   2 From: Viorel Suman <viorel.suman@nxp.com>
   3 Date: Wed, 3 May 2017 10:16:02 +0300
   4 Subject: [PATCH] ASoC: fsl_sai: handle slave mode per TX/RX direction
   5
   6 The SAI interface can be a clock supplier or consummer
   7 as function of stream direction, ie when interacting
   8 with I2S XTOR. Removed FSL_SAI_RFR define as it is now
   9 referred as FSL_SAI_RFR0.
  10
  11 Signed-off-by: Viorel Suman <viorel.suman@nxp.com>
  12 ---
  13  sound/soc/fsl/fsl_sai.c | 18 +++++++++---------
  14  sound/soc/fsl/fsl_sai.h |  3 +--
  15  2 files changed, 10 insertions(+), 11 deletions(-)
  16
  17 --- a/sound/soc/fsl/fsl_sai.c
  18 +++ b/sound/soc/fsl/fsl_sai.c
  19 @@ -300,7 +300,7 @@ static int fsl_sai_set_dai_fmt_tr(struct
  20                 return -EINVAL;
  21         }
  22
  23 -       sai->is_slave_mode = false;
  24 +       sai->slave_mode[tx] = false;
  25
  26         /* DAI clock master masks */
  27         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
  28 @@ -310,7 +310,7 @@ static int fsl_sai_set_dai_fmt_tr(struct
  29                 sai->is_slave_mode = false;
  30                 break;
  31         case SND_SOC_DAIFMT_CBM_CFM:
  32 -               sai->is_slave_mode = true;
  33 +               sai->slave_mode[tx] = true;
  34                 break;
  35         case SND_SOC_DAIFMT_CBS_CFM:
  36                 val_cr2 |= FSL_SAI_CR2_BCD_MSTR;
  37 @@ -318,7 +318,7 @@ static int fsl_sai_set_dai_fmt_tr(struct
  38                 break;
  39         case SND_SOC_DAIFMT_CBM_CFS:
  40                 val_cr4 |= FSL_SAI_CR4_FSD_MSTR;
  41 -               sai->is_slave_mode = true;
  42 +               sai->slave_mode[tx] = true;
  43                 break;
  44         default:
  45                 return -EINVAL;
  46 @@ -359,7 +359,7 @@ static int fsl_sai_set_bclk(struct snd_s
  47         int ret = 0;
  48
  49         /* Don't apply to slave mode */
  50 -       if (sai->is_slave_mode)
  51 +       if (sai->slave_mode[tx])
  52                 return 0;
  53
  54         for (id = 0; id < FSL_SAI_MCLK_MAX; id++) {
  55 @@ -454,7 +454,7 @@ static int fsl_sai_hw_params(struct snd_
  56         if (sai->slot_width)
  57                 slot_width = sai->slot_width;
  58
  59 -       if (!sai->is_slave_mode) {
  60 +       if (!sai->slave_mode[tx]) {
  61                 ret = fsl_sai_set_bclk(cpu_dai, tx,
  62                                 slots * slot_width * params_rate(params));
  63                 if (ret)
  64 @@ -490,7 +490,7 @@ static int fsl_sai_hw_params(struct snd_
  65          * error.
  66          */
  67
  68 -       if (!sai->is_slave_mode) {
  69 +       if (!sai->slave_mode[tx]) {
  70                 if (!sai->synchronous[TX] && sai->synchronous[RX] && !tx) {
  71                         regmap_update_bits(sai->regmap, FSL_SAI_TCR4,
  72                                 FSL_SAI_CR4_SYWD_MASK | FSL_SAI_CR4_FRSZ_MASK,
  73 @@ -519,7 +519,7 @@ static int fsl_sai_hw_params(struct snd_
  74          * error.
  75          */
  76
  77 -       if (!sai->is_slave_mode) {
  78 +       if (!sai->slave_mode[tx]) {
  79                 if (!sai->synchronous[TX] && sai->synchronous[RX] && !tx) {
  80                         regmap_update_bits(sai->regmap, FSL_SAI_TCR4,
  81                                 FSL_SAI_CR4_SYWD_MASK | FSL_SAI_CR4_FRSZ_MASK,
  82 @@ -577,7 +577,7 @@ static int fsl_sai_hw_free(struct snd_pc
  83         struct fsl_sai *sai = snd_soc_dai_get_drvdata(cpu_dai);
  84         bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
  85
  86 -       if (!sai->is_slave_mode &&
  87 +       if (!sai->slave_mode[tx] &&
  88                         sai->mclk_streams & BIT(substream->stream)) {
  89                 clk_disable_unprepare(sai->mclk_clk[sai->mclk_id[tx]]);
  90                 sai->mclk_streams &= ~BIT(substream->stream);
  91 @@ -672,7 +672,7 @@ static int fsl_sai_trigger(struct snd_pc
  92                          * This is a hardware bug, and will be fix in the
  93                          * next sai version.
  94                          */
  95 -                       if (!sai->is_slave_mode) {
  96 +                       if (!sai->slave_mode[tx]) {
  97                                 /* Software Reset for both Tx and Rx */
  98                                 regmap_write(sai->regmap,
  99                                              FSL_SAI_TCSR, FSL_SAI_CSR_SR);
 100 --- a/sound/soc/fsl/fsl_sai.h
 101 +++ b/sound/soc/fsl/fsl_sai.h
 102 @@ -37,7 +37,6 @@
 103  #define FSL_SAI_RDR1    0xa4 /* SAI Receive Data */
 104  #define FSL_SAI_RFR0    0xc0 /* SAI Receive FIFO */
 105  #define FSL_SAI_RFR1    0xc4 /* SAI Receive FIFO */
 106 -#define FSL_SAI_RFR    0xc0 /* SAI Receive FIFO */
 107  #define FSL_SAI_RMR    0xe0 /* SAI Receive Mask */
 108
 109  #define FSL_SAI_xCSR(tx)       (tx ? FSL_SAI_TCSR : FSL_SAI_RCSR)
 110 @@ -158,7 +157,7 @@ struct fsl_sai {
 111         struct clk *bus_clk;
 112         struct clk *mclk_clk[FSL_SAI_MCLK_MAX];
 113
 114 -       bool is_slave_mode;
 115 +       bool slave_mode[2];
 116         bool is_lsb_first;
 117         bool is_dsp_mode;
 118         bool sai_on_imx;