diff options
Diffstat (limited to 'sound/soc/fsl/fsl_sai.c')
| -rw-r--r-- | sound/soc/fsl/fsl_sai.c | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c index 9661602b53c5..d232c8f53061 100644 --- a/sound/soc/fsl/fsl_sai.c +++ b/sound/soc/fsl/fsl_sai.c @@ -808,6 +808,8 @@ static int fsl_sai_hw_free(struct snd_pcm_substream *substream, struct fsl_sai *sai = snd_soc_dai_get_drvdata(cpu_dai); bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; unsigned int ofs = sai->soc_data->reg_offset; + int adir = tx ? RX : TX; + int dir = tx ? TX : RX; /* Clear xMR to avoid channel swap with mclk_with_tere enabled case */ regmap_write(sai->regmap, FSL_SAI_xMR(tx), 0); @@ -815,10 +817,29 @@ static int fsl_sai_hw_free(struct snd_pcm_substream *substream, regmap_update_bits(sai->regmap, FSL_SAI_xCR3(tx, ofs), FSL_SAI_CR3_TRCE_MASK, 0); - if (!sai->is_consumer_mode[tx] && - sai->mclk_streams & BIT(substream->stream)) { - clk_disable_unprepare(sai->mclk_clk[sai->mclk_id[tx]]); - sai->mclk_streams &= ~BIT(substream->stream); + if (!sai->is_consumer_mode[tx]) { + bool adir_active = !!(sai->mclk_streams & BIT(!substream->stream)); + /* + * If opposite stream provides clocks for synchronous mode and + * it is inactive, Clear BYP and BCI + */ + if (fsl_sai_dir_is_synced(sai, adir) && !adir_active) + regmap_update_bits(sai->regmap, FSL_SAI_xCR2(!tx, ofs), + FSL_SAI_CR2_BCI | FSL_SAI_CR2_BYP, 0); + /* + * Clear BYP and BCI of current stream if either of: + * 1. current stream doesn't provide clocks for synchronous mode + * 2. current stream provides clocks for synchronous mode but no + * more stream is active. + */ + if (!fsl_sai_dir_is_synced(sai, dir) || !adir_active) + regmap_update_bits(sai->regmap, FSL_SAI_xCR2(tx, ofs), + FSL_SAI_CR2_BCI | FSL_SAI_CR2_BYP, 0); + + if (sai->mclk_streams & BIT(substream->stream)) { + clk_disable_unprepare(sai->mclk_clk[sai->mclk_id[tx]]); + sai->mclk_streams &= ~BIT(substream->stream); + } } return 0; |