diff options
| author | Dimitris Papastamos <dp@opensource.wolfsonmicro.com> | 2011-03-24 13:45:18 (GMT) |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-03-26 17:45:27 (GMT) |
| commit | 239c970626b9d9c7449de751d91f9a9da1018b85 (patch) | |
| tree | 7d62c863ab856e5d8e1098a2f4eb984e859fcea3 | |
| parent | 8020454c9a1ec5ac5801805896b5f69d0c573e17 (diff) | |
| download | linux-239c970626b9d9c7449de751d91f9a9da1018b85.tar.xz | |
ASoC: Add snd_soc_codec_{readable,writable}_register()
Provide the top level ASoC core functions for indicating whether
a given register is readable or writable.
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>
| -rw-r--r-- | include/sound/soc.h | 4 | ||||
| -rw-r--r-- | sound/soc/soc-core.c | 36 |
2 files changed, 40 insertions, 0 deletions
diff --git a/include/sound/soc.h b/include/sound/soc.h index e208357..2720a9f 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -278,6 +278,10 @@ int snd_soc_register_codec(struct device *dev, void snd_soc_unregister_codec(struct device *dev); int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, unsigned int reg); +int snd_soc_codec_readable_register(struct snd_soc_codec *codec, + unsigned int reg); +int snd_soc_codec_writable_register(struct snd_soc_codec *codec, + unsigned int reg); int snd_soc_codec_set_cache_io(struct snd_soc_codec *codec, int addr_bits, int data_bits, enum snd_soc_control_type control); diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 074a0c6..5ae70a10 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -2147,6 +2147,42 @@ int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register); /** + * snd_soc_codec_readable_register: Report if a register is readable. + * + * @codec: CODEC to query. + * @reg: Register to query. + * + * Boolean function indicating if a CODEC register is readable. + */ +int snd_soc_codec_readable_register(struct snd_soc_codec *codec, + unsigned int reg) +{ + if (codec->readable_register) + return codec->readable_register(codec, reg); + else + return 0; +} +EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register); + +/** + * snd_soc_codec_writable_register: Report if a register is writable. + * + * @codec: CODEC to query. + * @reg: Register to query. + * + * Boolean function indicating if a CODEC register is writable. + */ +int snd_soc_codec_writable_register(struct snd_soc_codec *codec, + unsigned int reg) +{ + if (codec->writable_register) + return codec->writable_register(codec, reg); + else + return 0; +} +EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register); + +/** * snd_soc_new_ac97_codec - initailise AC97 device * @codec: audio codec * @ops: AC97 bus operations |