diff options
| author | Dimitris Papastamos <dp@opensource.wolfsonmicro.com> | 2011-03-24 13:45:17 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-03-26 17:45:16 +0000 |
| commit | 8020454c9a1ec5ac5801805896b5f69d0c573e17 (patch) | |
| tree | 60141172b88a90a0f31d9412d338d65c2d9c4f00 /sound/soc/soc-cache.c | |
| parent | acd61451e55ea5848a6ab50d39a103e146fcf7ba (diff) | |
| download | lwn-8020454c9a1ec5ac5801805896b5f69d0c573e17.tar.gz lwn-8020454c9a1ec5ac5801805896b5f69d0c573e17.zip | |
ASoC: Add default snd_soc_default_writable_register() callback
By using struct snd_soc_reg_access for the read/write/vol attributes
of the registers, we provide callbacks that automatically determine whether
a given register is readable/writable or volatile.
Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/soc-cache.c')
| -rw-r--r-- | sound/soc/soc-cache.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/sound/soc/soc-cache.c b/sound/soc/soc-cache.c index 258c3b2098b5..1210a6f70a90 100644 --- a/sound/soc/soc-cache.c +++ b/sound/soc/soc-cache.c @@ -1449,3 +1449,17 @@ int snd_soc_default_readable_register(struct snd_soc_codec *codec, return codec->driver->reg_access_default[index].read; } EXPORT_SYMBOL_GPL(snd_soc_default_readable_register); + +int snd_soc_default_writable_register(struct snd_soc_codec *codec, + unsigned int reg) +{ + int index; + + if (reg >= codec->driver->reg_cache_size) + return 1; + index = snd_soc_get_reg_access_index(codec, reg); + if (index < 0) + return 0; + return codec->driver->reg_access_default[index].write; +} +EXPORT_SYMBOL_GPL(snd_soc_default_writable_register); |