Linux Manuals session 9

snd_soc_component_update_bits_async – Perform asynchronous read/modify/write cycle Synopsis int snd_soc_component_update_bits_async(struct snd_soc_component *component, unsigned int reg, unsigned int mask, unsigned int val); Arguments component Component to update reg Register to update mask Mask that specifies which bits to update val New value for the bits specified by mask Description This function is similar to snd_soc_component_update_bits, but the…

snd_soc_component_update_bits – Perform read/modify/write cycle Synopsis int snd_soc_component_update_bits(struct snd_soc_component *component, unsigned int reg, unsigned int mask, unsigned int val); Arguments component Component to update reg Register to update mask Mask that specifies which bits to update val New value for the bits specified by mask Return 1 if the operation was successful and the value…

snd_soc_component_to_platform – Casts a component to the platform it is embedded in Synopsis struct snd_soc_platform *snd_soc_component_to_platform(struct snd_soc_component *component); Arguments component The component to cast to a platform Description This function must only be used on components that are known to be platforms. Otherwise the behavior is undefined. Copyright

snd_soc_component_to_codec – Casts a component to the CODEC it is embedded in Synopsis struct snd_soc_codec *snd_soc_component_to_codec(struct snd_soc_component *component); Arguments component The component to cast to a CODEC Description This function must only be used on components that are known to be CODECs. Otherwise the behavior is undefined. Copyright

snd_soc_component_test_bits – Test register for change Synopsis int snd_soc_component_test_bits(struct snd_soc_component *component, unsigned int reg, unsigned int mask, unsigned int value); Arguments component component reg Register to test mask Mask that specifies which bits to test value Value to test against Description Tests a register with a new value and checks if the new value is…

snd_soc_component_read – Read register value Synopsis int snd_soc_component_read(struct snd_soc_component *component, unsigned int reg, unsigned int *val); Arguments component Component to read from reg Register to read val Pointer to where the read value is stored Return 0 on success, a negative error code otherwise. Copyright

snd_soc_component_init_regmap – Initialize regmap instance for the component Synopsis void snd_soc_component_init_regmap(struct snd_soc_component *component, struct regmap *regmap); Arguments component The component for which to initialize the regmap instance regmap The regmap instance that should be used by the component Description This function allows deferred assignment of the regmap instance that is associated with the component. Only…

snd_soc_component_get_dapm – Returns the DAPM context associated with a component Synopsis struct snd_soc_dapm_context *snd_soc_component_get_dapm(struct snd_soc_component *component); Arguments component The component for which to get the DAPM context Copyright

snd_soc_component_exit_regmap – De-initialize regmap instance for the component Synopsis void snd_soc_component_exit_regmap(struct snd_soc_component *component); Arguments component The component for which to de-initialize the regmap instance Description Calls regmap_exit on the regmap instance associated to the component and removes the regmap instance from the component. This function should only be used if snd_soc_component_init_regmap was used to initialize…

snd_soc_component_async_complete – Ensure asynchronous I/O has completed Synopsis void snd_soc_component_async_complete(struct snd_soc_component *component); Arguments component Component for which to wait Description This function blocks until all asynchronous I/O which has previously been scheduled using snd_soc_component_update_bits_async has completed. Copyright

snd_soc_codec_set_sysclk – configure CODEC system or master clock. Synopsis int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id, int source, unsigned int freq, int dir); Arguments codec CODEC clk_id DAI specific clock ID source Source for the clock freq new clock frequency in Hz dir new clock direction – input/output. Description Configures the CODEC master (MCLK) or system…

snd_soc_codec_init_regmap – Initialize regmap instance for the CODEC Synopsis void snd_soc_codec_init_regmap(struct snd_soc_codec *codec, struct regmap *regmap); Arguments codec The CODEC for which to initialize the regmap instance regmap The regmap instance that should be used by the CODEC Description This function allows deferred assignment of the regmap instance that is associated with the CODEC. Only…

snd_soc_codec_init_bias_level – Initialize CODEC DAPM bias level Synopsis void snd_soc_codec_init_bias_level(struct snd_soc_codec *codec, enum snd_soc_bias_level level); Arguments codec The CODEC for which to initialize the DAPM bias level level The DAPM level to initialize to Description Initializes the CODEC DAPM bias level. See snd_soc_dapm_init_bias_level. Copyright

snd_soc_codec_get_dapm – Returns the DAPM context for the CODEC Synopsis struct snd_soc_dapm_context *snd_soc_codec_get_dapm(struct snd_soc_codec *codec); Arguments codec The CODEC for which to get the DAPM context Note Use this function instead of directly accessing the CODEC’s dapm field Copyright

snd_soc_codec_get_bias_level – Get current CODEC DAPM bias level Synopsis enum snd_soc_bias_level snd_soc_codec_get_bias_level(struct snd_soc_codec * codec); Arguments codec The CODEC for which to get the DAPM bias level Return The current DAPM bias level of the CODEC. Copyright

snd_soc_codec_force_bias_level – Set the CODEC DAPM bias level Synopsis int snd_soc_codec_force_bias_level(struct snd_soc_codec *codec, enum snd_soc_bias_level level); Arguments codec The CODEC for which to set the level level The level to set to Description Forces the CODEC bias level to a specific state. See snd_soc_dapm_force_bias_level. Copyright

snd_soc_codec_exit_regmap – De-initialize regmap instance for the CODEC Synopsis void snd_soc_codec_exit_regmap(struct snd_soc_codec *codec); Arguments codec The CODEC for which to de-initialize the regmap instance Description Calls regmap_exit on the regmap instance associated to the CODEC and removes the regmap instance from the CODEC. This function should only be used if snd_soc_codec_init_regmap was used to initialize…

snd_soc_cnew – create new control Synopsis struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, void *data, const char *long_name, const char *prefix); Arguments _template control template data control private data long_name control long name prefix control name prefix Description Create a new mixer control from a template control. Returns 0 for success, else error. Copyright

snd_soc_card_jack_new – Create a new jack Synopsis int snd_soc_card_jack_new(struct snd_soc_card *card, const char *id, int type, struct snd_soc_jack *jack, struct snd_soc_jack_pin *pins, unsigned int num_pins); Arguments card ASoC card id an identifying string for this jack type a bitmask of enum snd_jack_type values that can be detected by this jack jack structure to use for…

snd_soc_cache_sync – Sync the register cache with the hardware Synopsis int snd_soc_cache_sync(struct snd_soc_codec *codec); Arguments codec CODEC to sync Note This function will call regcache_sync Copyright