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ASoC: fsl_spdif: Don't try to round-up for clock divisor calculation

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As commit 6c8ca30eec ("ASoC: fsl_ssi: Don't try to round-up for PM
divisor calculation") mentioned that there's no more need to use a
round up work around to get a better divisor since the clk-divider
driver has been refined a lot.

So this patch applies the same modification to fsl_spdif driver.

Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Nicolin Chen 2015-05-24 01:12:41 -07:00 committed by Mark Brown
parent b787f68c36
commit f490f32617
1 changed files with 4 additions and 6 deletions
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10
sound/soc/fsl/fsl_spdif.c
View file

@ -417,11 +417,9 @@ static int spdif_set_sample_rate(struct snd_pcm_substream *substream,
if (clk != STC_TXCLK_SPDIF_ROOT)
goto clk_set_bypass;
/*
* The S/PDIF block needs a clock of 64 * fs * txclk_df.
* So request 64 * fs * (txclk_df + 1) to get rounded.
*/
ret = clk_set_rate(spdif_priv->txclk[rate], 64 * sample_rate * (txclk_df + 1));
/* The S/PDIF block needs a clock of 64 * fs * txclk_df */
ret = clk_set_rate(spdif_priv->txclk[rate],
64 * sample_rate * txclk_df);
if (ret) {
dev_err(&pdev->dev, "failed to set tx clock rate\n");
return ret;
@ -1060,7 +1058,7 @@ static u32 fsl_spdif_txclk_caldiv(struct fsl_spdif_priv *spdif_priv,
for (sysclk_df = sysclk_dfmin; sysclk_df <= sysclk_dfmax; sysclk_df++) {
for (txclk_df = 1; txclk_df <= 128; txclk_df++) {
rate_ideal = rate[index] * (txclk_df + 1) * 64;
rate_ideal = rate[index] * txclk_df * 64;
if (round)
rate_actual = clk_round_rate(clk, rate_ideal);
else