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authorPeter Ujfalusi <peter.ujfalusi@nokia.com>2009-12-31 10:30:23 +0200
committerMark Brown <broonie@opensource.wolfsonmicro.com>2009-12-31 11:54:28 +0000
commitadcb8bc02d86259c117a03b54e9918e5ad3121af (patch)
tree76d3a1fc20d5c59f7433c55635ac507eaa8990be /sound/soc/codecs/tlv320dac33.c
parent28e05d987028023b09652bfe3ac597de6dba5e60 (diff)
downloadop-kernel-dev-adcb8bc02d86259c117a03b54e9918e5ad3121af.zip
op-kernel-dev-adcb8bc02d86259c117a03b54e9918e5ad3121af.tar.gz
ASoC: tlv320dac33: Safety check for codec slave mode
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>
Diffstat (limited to 'sound/soc/codecs/tlv320dac33.c')
-rw-r--r--sound/soc/codecs/tlv320dac33.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/sound/soc/codecs/tlv320dac33.c b/sound/soc/codecs/tlv320dac33.c
index bc35f3f..3ef3255 100644
--- a/sound/soc/codecs/tlv320dac33.c
+++ b/sound/soc/codecs/tlv320dac33.c
@@ -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;
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