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| author | Peter Rosin <peda@axentia.se> | 2015-02-16 22:02:47 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-02-24 15:14:24 +0100 |
| commit | 5890bd5256bc026c425361fa087dc05c7a24d853 (patch) | |
| tree | 495b557ad562dbc70b28cce9003954c157268265 /sound/soc/codecs/pcm512x.c | |
| parent | Linux 4.0-rc1 (diff) | |
| download | linux-5890bd5256bc026c425361fa087dc05c7a24d853.tar.xz linux-5890bd5256bc026c425361fa087dc05c7a24d853.zip | |
ASoC: pcm512x: Rearrange to not repeat dacsrc_rate / dac_div
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/codecs/pcm512x.c')
| -rw-r--r-- | sound/soc/codecs/pcm512x.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/sound/soc/codecs/pcm512x.c b/sound/soc/codecs/pcm512x.c index 9974f201a08f..f11c76f1acfe 100644 --- a/sound/soc/codecs/pcm512x.c +++ b/sound/soc/codecs/pcm512x.c @@ -863,28 +863,29 @@ static int pcm512x_set_dividers(struct snd_soc_dai *dai, dacsrc_rate = sck_rate; } + osr_div = DIV_ROUND_CLOSEST(dac_rate, osr_rate); + if (osr_div > 128) { + dev_err(dev, "Failed to find OSR divider\n"); + return -EINVAL; + } + dac_div = DIV_ROUND_CLOSEST(dacsrc_rate, dac_rate); if (dac_div > 128) { dev_err(dev, "Failed to find DAC divider\n"); return -EINVAL; } + dac_rate = dacsrc_rate / dac_div; - ncp_div = DIV_ROUND_CLOSEST(dacsrc_rate / dac_div, 1536000); - if (ncp_div > 128 || dacsrc_rate / dac_div / ncp_div > 2048000) { + ncp_div = DIV_ROUND_CLOSEST(dac_rate, 1536000); + if (ncp_div > 128 || dac_rate / ncp_div > 2048000) { /* run NCP no faster than 2048000 Hz, but why? */ - ncp_div = DIV_ROUND_UP(dacsrc_rate / dac_div, 2048000); + ncp_div = DIV_ROUND_UP(dac_rate, 2048000); if (ncp_div > 128) { dev_err(dev, "Failed to find NCP divider\n"); return -EINVAL; } } - osr_div = DIV_ROUND_CLOSEST(dac_rate, osr_rate); - if (osr_div > 128) { - dev_err(dev, "Failed to find OSR divider\n"); - return -EINVAL; - } - idac = mck_rate / (dsp_div * sample_rate); ret = regmap_write(pcm512x->regmap, PCM512x_DSP_CLKDIV, dsp_div - 1); |