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 --- include/sound/soc.h | 4 ++++ 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 982e63e..e8447be 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 1cb1446..60a22a6 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