linux/sound/hda/ext/hdac_ext_bus.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 *  hdac-ext-bus.c - HD-audio extended core bus functions.
 *
 *  Copyright (C) 2014-2015 Intel Corp
 *  Author: Jeeja KP <[email protected]>
 *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */

#include <linux/module.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <sound/hdaudio_ext.h>

MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;

/**
 * snd_hdac_ext_bus_init - initialize a HD-audio extended bus
 * @bus: the pointer to HDAC bus object
 * @dev: device pointer
 * @ops: bus verb operators
 * @ext_ops: operators used for ASoC HDA codec drivers
 *
 * Returns 0 if successful, or a negative error code.
 */
int snd_hdac_ext_bus_init(struct hdac_bus *bus, struct device *dev,
			const struct hdac_bus_ops *ops,
			const struct hdac_ext_bus_ops *ext_ops)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * snd_hdac_ext_bus_exit - clean up a HD-audio extended bus
 * @bus: the pointer to HDAC bus object
 */
void snd_hdac_ext_bus_exit(struct hdac_bus *bus)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * snd_hdac_ext_bus_device_remove - remove HD-audio extended codec base devices
 *
 * @bus: the pointer to HDAC bus object
 */
void snd_hdac_ext_bus_device_remove(struct hdac_bus *bus)
{ … }
EXPORT_SYMBOL_GPL(…);
#define dev_to_hdac(dev) …

static inline struct hdac_driver *get_hdrv(struct device *dev)
{ … }

static inline struct hdac_device *get_hdev(struct device *dev)
{ … }

static int hda_ext_drv_probe(struct device *dev)
{ … }

static int hdac_ext_drv_remove(struct device *dev)
{ … }

static void hdac_ext_drv_shutdown(struct device *dev)
{ … }

/**
 * snd_hda_ext_driver_register - register a driver for ext hda devices
 *
 * @drv: ext hda driver structure
 */
int snd_hda_ext_driver_register(struct hdac_driver *drv)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * snd_hda_ext_driver_unregister - unregister a driver for ext hda devices
 *
 * @drv: ext hda driver structure
 */
void snd_hda_ext_driver_unregister(struct hdac_driver *drv)
{ … }
EXPORT_SYMBOL_GPL(…);