Commit 239c9706 authored by Dimitris Papastamos's avatar Dimitris Papastamos Committed by Mark Brown
Browse files

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: default avatarDimitris Papastamos <dp@opensource.wolfsonmicro.com>
Acked-by: default avatarLiam Girdwood <lrg@ti.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 8020454c

include/sound/soc.h

+4 −0
Original line number Diff line number Diff line
@@ -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);

sound/soc/soc-core.c

+36 −0
Original line number Diff line number Diff line
@@ -2146,6 +2146,42 @@ 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