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Commit 28d6d175 authored by Lars-Peter Clausen's avatar Lars-Peter Clausen Committed by Mark Brown
Browse files

ASoC: Add helper function to cast component back to CODEC 



Add a helper function to cast back from a component struct to the CODEC struct
it is embedded in. This is useful in situations where we know that a certain
component is a CODEC and want to get access to some CODEC specific properties.

Signed-off-by: default avatarLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent 5c1d5f09

include/sound/soc.h

+13 −0
Original line number Diff line number Diff line
@@ -1104,6 +1104,19 @@ struct soc_enum { 
	const unsigned int *values;

};



/**

 * snd_soc_component_to_codec() - Casts a component to the CODEC it is embedded in

 * @component: The component to cast to a CODEC

 *

 * This function must only be used on components that are known to be CODECs.

 * Otherwise the behavior is undefined.

 */

static inline struct snd_soc_codec *snd_soc_component_to_codec(

	struct snd_soc_component *component)

{

	return container_of(component, struct snd_soc_codec, component);

}



/* codec IO */

unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg);

unsigned int snd_soc_write(struct snd_soc_codec *codec,