diff options
| author | Daniel Mack <zonque@gmail.com> | 2013-03-07 01:22:16 +0400 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2013-03-07 06:37:38 +0400 |
| commit | b692a436e1dc7227f2b7cf447797c3dc6ece5c29 (patch) | |
| tree | ad011568ff8a232bbd1c1bff8ccc10cc55402d9e /sound/soc/codecs/ak4104.c | |
| parent | b0ec761b99291f3c0f28ac370f94c145ec806095 (diff) | |
| download | linux-b692a436e1dc7227f2b7cf447797c3dc6ece5c29.tar.xz | |
ASoC: ak4104: correct tranceiver enable handling
Move the enabling of the TX diode to hw_params() and disable it again in
hw_free(). This way, the diode is only switched on as long as it needs
to be.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/codecs/ak4104.c')
| -rw-r--r-- | sound/soc/codecs/ak4104.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/sound/soc/codecs/ak4104.c b/sound/soc/codecs/ak4104.c index 58f390d3ea7a..c7cfdf957e4d 100644 --- a/sound/soc/codecs/ak4104.c +++ b/sound/soc/codecs/ak4104.c @@ -93,7 +93,7 @@ static int ak4104_hw_params(struct snd_pcm_substream *substream, { struct snd_soc_codec *codec = dai->codec; struct ak4104_private *ak4104 = snd_soc_codec_get_drvdata(codec); - int val = 0; + int ret, val = 0; /* set the IEC958 bits: consumer mode, no copyright bit */ val |= IEC958_AES0_CON_NOT_COPYRIGHT; @@ -134,11 +134,33 @@ static int ak4104_hw_params(struct snd_pcm_substream *substream, return -EINVAL; } - return regmap_write(ak4104->regmap, AK4104_REG_CHN_STATUS(3), val); + ret = regmap_write(ak4104->regmap, AK4104_REG_CHN_STATUS(3), val); + if (ret < 0) + return ret; + + /* enable transmitter */ + ret = regmap_update_bits(ak4104->regmap, AK4104_REG_TX, + AK4104_TX_TXE, AK4104_TX_TXE); + if (ret < 0) + return ret; + + return 0; +} + +static int ak4104_hw_free(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct snd_soc_codec *codec = dai->codec; + struct ak4104_private *ak4104 = snd_soc_codec_get_drvdata(codec); + + /* disable transmitter */ + return regmap_update_bits(ak4104->regmap, AK4104_REG_TX, + AK4104_TX_TXE, 0); } static const struct snd_soc_dai_ops ak4101_dai_ops = { .hw_params = ak4104_hw_params, + .hw_free = ak4104_hw_free, .set_fmt = ak4104_set_dai_fmt, }; |