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| author | Takashi Iwai <tiwai@suse.de> | 2011-07-05 07:33:06 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2011-07-05 07:33:06 +0200 |
| commit | 63bc9750167ac765827470aa5aed1e79aeaaad9e (patch) | |
| tree | f9e352364314f2bcb4e450a148f7ee95b2313c70 /sound/soc/codecs/tlv320aic26.c | |
| parent | 53dea36c70c1857149a8c447224e3936eb8b5339 (diff) | |
| parent | 9fb352b18b11124ed1ddebc0d74ebbd7ba8defd7 (diff) | |
| download | talos-op-linux-63bc9750167ac765827470aa5aed1e79aeaaad9e.tar.gz talos-op-linux-63bc9750167ac765827470aa5aed1e79aeaaad9e.zip | |
Merge branch 'for-3.0' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/asoc-2.6 into fix/asoc
Diffstat (limited to 'sound/soc/codecs/tlv320aic26.c')
| -rw-r--r-- | sound/soc/codecs/tlv320aic26.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/sound/soc/codecs/tlv320aic26.c b/sound/soc/codecs/tlv320aic26.c index e2a7608d3944..7859bdcc93db 100644 --- a/sound/soc/codecs/tlv320aic26.c +++ b/sound/soc/codecs/tlv320aic26.c @@ -161,10 +161,18 @@ static int aic26_hw_params(struct snd_pcm_substream *substream, dev_dbg(&aic26->spi->dev, "bad format\n"); return -EINVAL; } - /* Configure PLL */ + /** + * Configure PLL + * fsref = (mclk * PLLM) / 2048 + * where PLLM = J.DDDD (DDDD register ranges from 0 to 9999, decimal) + */ pval = 1; - jval = (fsref == 44100) ? 7 : 8; - dval = (fsref == 44100) ? 5264 : 1920; + /* compute J portion of multiplier */ + jval = fsref / (aic26->mclk / 2048); + /* compute fractional DDDD component of multiplier */ + dval = fsref - (jval * (aic26->mclk / 2048)); + dval = (10000 * dval) / (aic26->mclk / 2048); + dev_dbg(&aic26->spi->dev, "Setting PLLM to %d.%04d\n", jval, dval); qval = 0; reg = 0x8000 | qval << 11 | pval << 8 | jval << 2; aic26_reg_write(codec, AIC26_REG_PLL_PROG1, reg); |
