AcoSail/kernel_optimize_test
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ASoC: S3C I2S LRCLK polarity option.

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1) Explicitly set LRCLK polarity for I2S Vs LSM/MSB modes.
2) Convert from numerical to bit-field values for BCLK selection.
3) Use proper error checking for return value from clk_get

Signed-off-by: Jassi <jassi.brar@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Jassi 2009-09-15 19:02:38 +09:00 committed by Mark Brown
parent 472df3cbae
commit fd5ad654e6
1 changed files with 29 additions and 1 deletions
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30
sound/soc/s3c24xx/s3c-i2s-v2.c
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@ -308,12 +308,15 @@ static int s3c2412_i2s_set_fmt(struct snd_soc_dai *cpu_dai,
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_RIGHT_J:
iismod |= S3C2412_IISMOD_LR_RLOW;
iismod |= S3C2412_IISMOD_SDF_MSB;
break;
case SND_SOC_DAIFMT_LEFT_J:
iismod |= S3C2412_IISMOD_LR_RLOW;
iismod |= S3C2412_IISMOD_SDF_LSB;
break;
case SND_SOC_DAIFMT_I2S:
iismod &= ~S3C2412_IISMOD_LR_RLOW;
iismod |= S3C2412_IISMOD_SDF_IIS;
break;
default:
@ -463,6 +466,31 @@ static int s3c2412_i2s_set_clkdiv(struct snd_soc_dai *cpu_dai,
switch (div_id) {
case S3C_I2SV2_DIV_BCLK:
if (div > 3) {
/* convert value to bit field */
switch (div) {
case 16:
div = S3C2412_IISMOD_BCLK_16FS;
break;
case 32:
div = S3C2412_IISMOD_BCLK_32FS;
break;
case 24:
div = S3C2412_IISMOD_BCLK_24FS;
break;
case 48:
div = S3C2412_IISMOD_BCLK_48FS;
break;
default:
return -EINVAL;
}
}
reg = readl(i2s->regs + S3C2412_IISMOD);
reg &= ~S3C2412_IISMOD_BCLK_MASK;
writel(reg | div, i2s->regs + S3C2412_IISMOD);
@ -622,7 +650,7 @@ int s3c_i2sv2_probe(struct platform_device *pdev,
}
i2s->iis_pclk = clk_get(dev, "iis");
if (i2s->iis_pclk == NULL) {
if (IS_ERR(i2s->iis_pclk)) {
dev_err(dev, "failed to get iis_clock\n");
iounmap(i2s->regs);
return -ENOENT;