diff options
Diffstat (limited to 'sound/soc/codecs/nau8825.c')
| -rw-r--r-- | sound/soc/codecs/nau8825.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/sound/soc/codecs/nau8825.c b/sound/soc/codecs/nau8825.c index 4576f987a4a5..97fbeba9498f 100644 --- a/sound/soc/codecs/nau8825.c +++ b/sound/soc/codecs/nau8825.c @@ -1231,7 +1231,7 @@ static int nau8825_hw_params(struct snd_pcm_substream *substream, { struct snd_soc_codec *codec = dai->codec; struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec); - unsigned int val_len = 0, osr; + unsigned int val_len = 0, osr, ctrl_val, bclk_fs, bclk_div; nau8825_sema_acquire(nau8825, 3 * HZ); @@ -1261,6 +1261,24 @@ static int nau8825_hw_params(struct snd_pcm_substream *substream, osr_adc_sel[osr].clk_src << NAU8825_CLK_ADC_SRC_SFT); } + /* make BCLK and LRC divde configuration if the codec as master. */ + regmap_read(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2, &ctrl_val); + if (ctrl_val & NAU8825_I2S_MS_MASTER) { + /* get the bclk and fs ratio */ + bclk_fs = snd_soc_params_to_bclk(params) / params_rate(params); + if (bclk_fs <= 32) + bclk_div = 2; + else if (bclk_fs <= 64) + bclk_div = 1; + else if (bclk_fs <= 128) + bclk_div = 0; + else + return -EINVAL; + regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2, + NAU8825_I2S_LRC_DIV_MASK | NAU8825_I2S_BLK_DIV_MASK, + ((bclk_div + 1) << NAU8825_I2S_LRC_DIV_SFT) | bclk_div); + } + switch (params_width(params)) { case 16: val_len |= NAU8825_I2S_DL_16; |