Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 096e49d5 authored by Mark Brown's avatar Mark Brown
Browse files

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: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent af0adf3e

include/sound/soc.h

+2 −0
Original line number Diff line number Diff line
@@ -191,6 +191,7 @@ int snd_soc_register_platform(struct snd_soc_platform *platform); 
void snd_soc_unregister_platform(struct snd_soc_platform *platform);

int snd_soc_register_codec(struct snd_soc_codec *codec);

void snd_soc_unregister_codec(struct snd_soc_codec *codec);

int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, int reg);



#ifdef CONFIG_PM

int snd_soc_suspend_device(struct device *dev);
@@ -361,6 +362,7 @@ struct snd_soc_codec { 
	int (*write)(struct snd_soc_codec *, unsigned int, unsigned int);

	int (*display_register)(struct snd_soc_codec *, char *,

				size_t, unsigned int);

	int (*volatile_register)(unsigned int);

	hw_write_t hw_write;

	hw_read_t hw_read;

	void *reg_cache;

sound/soc/soc-core.c

+17 −0
Original line number Diff line number Diff line
@@ -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)

{