diff options
| author | Peter Ujfalusi <peter.ujfalusi@nokia.com> | 2009-06-01 15:06:40 +0400 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2009-06-02 02:46:08 +0400 |
| commit | eaf1ac8bb58888e0773c0b81dfedb9d7c0123a1d (patch) | |
| tree | a12e7bf7e9a4d1b8a71444aaf70d5c4423b1fd31 /sound/soc | |
| parent | 16a30fbb0d3aa4ee829a2dd3d0e314e2b5ae96a9 (diff) | |
| download | linux-eaf1ac8bb58888e0773c0b81dfedb9d7c0123a1d.tar.xz | |
ASoC: TWL4030: Check the interface format for 4 channel mode
In addition to the operating mode check, also check the
codec's interface format in case of four channel mode.
If the codec is not in TDM (DSP_A) mode, return with error.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc')
| -rw-r--r-- | sound/soc/codecs/twl4030.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/sound/soc/codecs/twl4030.c b/sound/soc/codecs/twl4030.c index df474a5dd357..c53c7cabbd27 100644 --- a/sound/soc/codecs/twl4030.c +++ b/sound/soc/codecs/twl4030.c @@ -1608,9 +1608,15 @@ static int twl4030_hw_params(struct snd_pcm_substream *substream, /* If the substream has 4 channel, do the necessary setup */ if (params_channels(params) == 4) { - /* Safety check: are we in the correct operating mode? */ - if ((twl4030_read_reg_cache(codec, TWL4030_REG_CODEC_MODE) & - TWL4030_OPTION_1)) + u8 format, mode; + + format = twl4030_read_reg_cache(codec, TWL4030_REG_AUDIO_IF); + mode = twl4030_read_reg_cache(codec, TWL4030_REG_CODEC_MODE); + + /* Safety check: are we in the correct operating mode and + * the interface is in TDM mode? */ + if ((mode & TWL4030_OPTION_1) && + ((format & TWL4030_AIF_FORMAT) == TWL4030_AIF_FORMAT_TDM)) twl4030_tdm_enable(codec, substream->stream, 1); else return -EINVAL; |