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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: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@linaro.org>
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@ -1104,6 +1104,19 @@ struct soc_enum {
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const unsigned int *values;
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};
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/**
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* snd_soc_component_to_codec() - Casts a component to the CODEC it is embedded in
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* @component: The component to cast to a CODEC
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*
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* This function must only be used on components that are known to be CODECs.
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* Otherwise the behavior is undefined.
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*/
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static inline struct snd_soc_codec *snd_soc_component_to_codec(
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struct snd_soc_component *component)
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{
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return container_of(component, struct snd_soc_codec, component);
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}
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/* codec IO */
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unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg);
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unsigned int snd_soc_write(struct snd_soc_codec *codec,
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