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ASoC: stm32: sai: fix oversampling mode

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Set OSR bit if mclk/fs ratio is 512.

Signed-off-by: Olivier Moysan <olivier.moysan@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Olivier Moysan 2019-02-28 14:19:24 +01:00 committed by Mark Brown
parent 26f98e82dd
commit 71d9537fad
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GPG key ID: 24D68B725D5487D0
1 changed files with 9 additions and 3 deletions
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12
sound/soc/stm/stm32_sai_sub.c
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@ -913,7 +913,7 @@ static int stm32_sai_configure_clock(struct snd_soc_dai *cpu_dai,
struct snd_pcm_hw_params *params) struct snd_pcm_hw_params *params)
{ {
struct stm32_sai_sub_data *sai = snd_soc_dai_get_drvdata(cpu_dai); struct stm32_sai_sub_data *sai = snd_soc_dai_get_drvdata(cpu_dai);
int div = 0; int div = 0, cr1 = 0;
int sai_clk_rate, mclk_ratio, den; int sai_clk_rate, mclk_ratio, den;
unsigned int rate = params_rate(params); unsigned int rate = params_rate(params);
@ -958,13 +958,19 @@ static int stm32_sai_configure_clock(struct snd_soc_dai *cpu_dai,
} else { } else {
if (sai->mclk_rate) { if (sai->mclk_rate) {
mclk_ratio = sai->mclk_rate / rate; mclk_ratio = sai->mclk_rate / rate;
if ((mclk_ratio != 512) && if (mclk_ratio == 512) {
(mclk_ratio != 256)) { cr1 = SAI_XCR1_OSR;
} else if (mclk_ratio != 256) {
dev_err(cpu_dai->dev, dev_err(cpu_dai->dev,
"Wrong mclk ratio %d\n", "Wrong mclk ratio %d\n",
mclk_ratio); mclk_ratio);
return -EINVAL; return -EINVAL;
} }
regmap_update_bits(sai->regmap,
STM_SAI_CR1_REGX,
SAI_XCR1_OSR, cr1);
div = stm32_sai_get_clk_div(sai, sai_clk_rate, div = stm32_sai_get_clk_div(sai, sai_clk_rate,
sai->mclk_rate); sai->mclk_rate);
if (div < 0) if (div < 0)