diff options
| author | John Hsu <KCHSU0@nuvoton.com> | 2019-03-13 16:52:01 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-03-13 15:07:20 +0000 |
| commit | 20b83421e8eea43e28cb7aeea3e3f865f86aa69d (patch) | |
| tree | d7bd101bb7a0ad52341c77c8a28a19c0523edc76 /sound/soc/codecs/nau8810.c | |
| parent | 709a9b8a1f4ff6c34c0a6e6fefb31cfb23b19bf5 (diff) | |
| download | linux-20b83421e8eea43e28cb7aeea3e3f865f86aa69d.tar.bz2 | |
ASoC: nau8810: automatic selecting BCLK in I2S master mode
The driver will select correct BCLK automatically according to
BCLK and FS information in I2S master mode.
Signed-off-by: John Hsu <KCHSU0@nuvoton.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/codecs/nau8810.c')
| -rw-r--r-- | sound/soc/codecs/nau8810.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/sound/soc/codecs/nau8810.c b/sound/soc/codecs/nau8810.c index 39512a78a556..5d300b790f78 100644 --- a/sound/soc/codecs/nau8810.c +++ b/sound/soc/codecs/nau8810.c @@ -667,6 +667,24 @@ static int nau8810_pcm_hw_params(struct snd_pcm_substream *substream, struct snd_soc_component *component = dai->component; struct nau8810 *nau8810 = snd_soc_component_get_drvdata(component); int val_len = 0, val_rate = 0, ret = 0; + unsigned int ctrl_val, bclk_fs, bclk_div; + + /* Select BCLK configuration if the codec as master. */ + regmap_read(nau8810->regmap, NAU8810_REG_CLOCK, &ctrl_val); + if (ctrl_val & NAU8810_CLKIO_MASTER) { + /* get the bclk and fs ratio */ + bclk_fs = snd_soc_params_to_bclk(params) / params_rate(params); + if (bclk_fs <= 32) + bclk_div = NAU8810_BCLKDIV_8; + else if (bclk_fs <= 64) + bclk_div = NAU8810_BCLKDIV_4; + else if (bclk_fs <= 128) + bclk_div = NAU8810_BCLKDIV_2; + else + return -EINVAL; + regmap_update_bits(nau8810->regmap, NAU8810_REG_CLOCK, + NAU8810_BCLKSEL_MASK, bclk_div); + } switch (params_width(params)) { case 16: |