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ASoC: tlv320dac33: Safety check for codec slave mode

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The currently available FIFO modes (mode1 and mode7) require master
mode from the codec.
Do not allow the slave configuration when the FIFO is in use.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Peter Ujfalusi 2009-12-31 10:30:23 +02:00 committed by Mark Brown
parent 28e05d9870
commit adcb8bc02d
1 changed files with 6 additions and 1 deletions
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7
sound/soc/codecs/tlv320dac33.c
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@ -993,6 +993,7 @@ static int dac33_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
struct snd_soc_codec *codec = codec_dai->codec;
struct tlv320dac33_priv *dac33 = codec->private_data;
u8 aictrl_a, aictrl_b;
aictrl_a = dac33_read_reg_cache(codec, DAC33_SER_AUDIOIF_CTRL_A);
@ -1005,7 +1006,11 @@ static int dac33_set_dai_fmt(struct snd_soc_dai *codec_dai,
break;
case SND_SOC_DAIFMT_CBS_CFS:
/* Codec Slave */
aictrl_a &= ~(DAC33_MSBCLK | DAC33_MSWCLK);
if (dac33->fifo_mode) {
dev_err(codec->dev, "FIFO mode requires master mode\n");
return -EINVAL;
} else
aictrl_a &= ~(DAC33_MSBCLK | DAC33_MSWCLK);
break;
default:
return -EINVAL;