130 lines
3.8 KiB
C
130 lines
3.8 KiB
C
// SPDX-License-Identifier: MIT
|
|
// Copyright © 2014 Intel Corporation
|
|
|
|
#ifndef _DRM_AUDIO_COMPONENT_H_
|
|
#define _DRM_AUDIO_COMPONENT_H_
|
|
|
|
#include <linux/completion.h>
|
|
#include <linux/types.h>
|
|
|
|
struct drm_audio_component;
|
|
struct device;
|
|
|
|
/**
|
|
* 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.
|
|
*/
|
|
unsigned long (*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 *, unsigned long);
|
|
/**
|
|
* @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,
|
|
unsigned char *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
|
|
*/
|
|
const struct drm_audio_component_ops *ops;
|
|
/**
|
|
* @audio_ops: Ops implemented by hda driver, called by DRM driver
|
|
*/
|
|
const struct 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_ */
|