/** * struct drm_audio_component_ops - Ops implemented by DRM driver, called by hda driver
*/ struct drm_audio_component_ops { /** * @owner: drm module to pin down
*/ struct module *owner; /** * @get_power: get the POWER_DOMAIN_AUDIO power well * * Request the power well to be turned on. * * Returns a wakeref cookie to be passed back to the corresponding * call to @put_power.
*/ unsignedlong (*get_power)(struct device *); /** * @put_power: put the POWER_DOMAIN_AUDIO power well * * Allow the power well to be turned off.
*/ void (*put_power)(struct device *, unsignedlong); /** * @codec_wake_override: Enable/disable codec wake signal
*/ void (*codec_wake_override)(struct device *, bool enable); /** * @get_cdclk_freq: Get the Core Display Clock in kHz
*/ int (*get_cdclk_freq)(struct device *); /** * @sync_audio_rate: set n/cts based on the sample rate * * Called from audio driver. After audio driver sets the * sample rate, it will call this function to set n/cts
*/ int (*sync_audio_rate)(struct device *, int port, int pipe, int rate); /** * @get_eld: fill the audio state and ELD bytes for the given port * * Called from audio driver to get the HDMI/DP audio state of the given * digital port, and also fetch ELD bytes to the given pointer. * * It returns the byte size of the original ELD (not the actually * copied size), zero for an invalid ELD, or a negative error code. * * Note that the returned size may be over @max_bytes. Then it * implies that only a part of ELD has been copied to the buffer.
*/ int (*get_eld)(struct device *, int port, int pipe, bool *enabled, unsignedchar *buf, int max_bytes);
};
/** * struct drm_audio_component_audio_ops - Ops implemented by hda driver, called by DRM driver
*/ struct drm_audio_component_audio_ops { /** * @audio_ptr: Pointer to be used in call to pin_eld_notify
*/ void *audio_ptr; /** * @pin_eld_notify: Notify the HDA driver that pin sense and/or ELD information has changed * * Called when the DRM driver has set up audio pipeline or has just * begun to tear it down. This allows the HDA driver to update its * status accordingly (even when the HDA controller is in power save * mode).
*/ void (*pin_eld_notify)(void *audio_ptr, int port, int pipe); /** * @pin2port: Check and convert from pin node to port number * * Called by HDA driver to check and convert from the pin widget node * number to a port number in the graphics side.
*/ int (*pin2port)(void *audio_ptr, int pin); /** * @master_bind: (Optional) component master bind callback * * Called at binding master component, for HDA codec-specific * handling of dynamic binding.
*/ int (*master_bind)(struct device *dev, struct drm_audio_component *); /** * @master_unbind: (Optional) component master unbind callback * * Called at unbinding master component, for HDA codec-specific * handling of dynamic unbinding.
*/ void (*master_unbind)(struct device *dev, struct drm_audio_component *);
};
/** * struct drm_audio_component - Used for direct communication between DRM and hda drivers
*/ struct drm_audio_component { /** * @dev: DRM device, used as parameter for ops
*/ struct device *dev; /** * @ops: Ops implemented by DRM driver, called by hda driver
*/ conststruct drm_audio_component_ops *ops; /** * @audio_ops: Ops implemented by hda driver, called by DRM driver
*/ conststruct drm_audio_component_audio_ops *audio_ops; /** * @master_bind_complete: completion held during component master binding
*/ struct completion master_bind_complete;
};
#endif/* _DRM_AUDIO_COMPONENT_H_ */
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