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| author | Mark Brown | 2009-07-05 16:12:22 +0200 |
|---|---|---|
| committer | Mark Brown | 2009-07-05 16:12:22 +0200 |
| commit | 096e49d5e6f7bd93395e7ddf7e0239e1644d0505 (patch) | |
| tree | 8247ad9e691171481fa00fd3cb301bb4f03779d8 /sound/soc/soc-core.c | |
| parent | ASoC: DaVinci: i2s, add davinci_i2s_prepare and shutdown (diff) | |
| download | kernel-qcow2-linux-096e49d5e6f7bd93395e7ddf7e0239e1644d0505.tar.gz kernel-qcow2-linux-096e49d5e6f7bd93395e7ddf7e0239e1644d0505.tar.xz kernel-qcow2-linux-096e49d5e6f7bd93395e7ddf7e0239e1644d0505.zip | |
ASoC: Add CODEC volatile register operation
Add a volatile_register() operation to the CODEC structure providing a
standard operation to query if a register is volatile. This will be used
to factor out the register cache I/O operations for the CODECs.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/soc-core.c')
| -rw-r--r-- | sound/soc/soc-core.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index dfc03c0bacb6..8bf49a4e664a 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -1125,6 +1125,23 @@ static int soc_new_pcm(struct snd_soc_device *socdev, return ret; } +/** + * snd_soc_codec_volatile_register: Report if a register is volatile. + * + * @codec: CODEC to query. + * @reg: Register to query. + * + * Boolean function indiciating if a CODEC register is volatile. + */ +int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, int reg) +{ + if (codec->volatile_register) + return codec->volatile_register(reg); + else + return 0; +} +EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register); + /* codec register dump */ static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf) { |