/*
|
* Apple Onboard Audio definitions
|
*
|
* Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
|
*
|
* GPL v2, can be found in COPYING.
|
*/
|
|
#ifndef __AOA_H
|
#define __AOA_H
|
#include <asm/prom.h>
|
#include <linux/module.h>
|
#include <sound/core.h>
|
#include <sound/asound.h>
|
#include <sound/control.h>
|
#include "aoa-gpio.h"
|
#include "soundbus/soundbus.h"
|
|
#define MAX_CODEC_NAME_LEN 32
|
|
struct aoa_codec {
|
char name[MAX_CODEC_NAME_LEN];
|
|
struct module *owner;
|
|
/* called when the fabric wants to init this codec.
|
* Do alsa card manipulations from here. */
|
int (*init)(struct aoa_codec *codec);
|
|
/* called when the fabric is done with the codec.
|
* The alsa card will be cleaned up so don't bother. */
|
void (*exit)(struct aoa_codec *codec);
|
|
/* May be NULL, but can be used by the fabric.
|
* Refcounting is the codec driver's responsibility */
|
struct device_node *node;
|
|
/* assigned by fabric before init() is called, points
|
* to the soundbus device. Cannot be NULL. */
|
struct soundbus_dev *soundbus_dev;
|
|
/* assigned by the fabric before init() is called, points
|
* to the fabric's gpio runtime record for the relevant
|
* device. */
|
struct gpio_runtime *gpio;
|
|
/* assigned by the fabric before init() is called, contains
|
* a codec specific bitmask of what outputs and inputs are
|
* actually connected */
|
u32 connected;
|
|
/* data the fabric can associate with this structure */
|
void *fabric_data;
|
|
/* private! */
|
struct list_head list;
|
struct aoa_fabric *fabric;
|
};
|
|
/* return 0 on success */
|
extern int
|
aoa_codec_register(struct aoa_codec *codec);
|
extern void
|
aoa_codec_unregister(struct aoa_codec *codec);
|
|
#define MAX_LAYOUT_NAME_LEN 32
|
|
struct aoa_fabric {
|
char name[MAX_LAYOUT_NAME_LEN];
|
|
struct module *owner;
|
|
/* once codecs register, they are passed here after.
|
* They are of course not initialised, since the
|
* fabric is responsible for initialising some fields
|
* in the codec structure! */
|
int (*found_codec)(struct aoa_codec *codec);
|
/* called for each codec when it is removed,
|
* also in the case that aoa_fabric_unregister
|
* is called and all codecs are removed
|
* from this fabric.
|
* Also called if found_codec returned 0 but
|
* the codec couldn't initialise. */
|
void (*remove_codec)(struct aoa_codec *codec);
|
/* If found_codec returned 0, and the codec
|
* could be initialised, this is called. */
|
void (*attached_codec)(struct aoa_codec *codec);
|
};
|
|
/* return 0 on success, -EEXIST if another fabric is
|
* registered, -EALREADY if the same fabric is registered.
|
* Passing NULL can be used to test for the presence
|
* of another fabric, if -EALREADY is returned there is
|
* no other fabric present.
|
* In the case that the function returns -EALREADY
|
* and the fabric passed is not NULL, all codecs
|
* that are not assigned yet are passed to the fabric
|
* again for reconsideration. */
|
extern int
|
aoa_fabric_register(struct aoa_fabric *fabric, struct device *dev);
|
|
/* it is vital to call this when the fabric exits!
|
* When calling, the remove_codec will be called
|
* for all codecs, unless it is NULL. */
|
extern void
|
aoa_fabric_unregister(struct aoa_fabric *fabric);
|
|
/* if for some reason you want to get rid of a codec
|
* before the fabric is removed, use this.
|
* Note that remove_codec is called for it! */
|
extern void
|
aoa_fabric_unlink_codec(struct aoa_codec *codec);
|
|
/* alsa help methods */
|
struct aoa_card {
|
struct snd_card *alsa_card;
|
};
|
|
extern int aoa_snd_device_new(enum snd_device_type type,
|
void * device_data, struct snd_device_ops * ops);
|
extern struct snd_card *aoa_get_card(void);
|
extern int aoa_snd_ctl_add(struct snd_kcontrol* control);
|
|
/* GPIO stuff */
|
extern struct gpio_methods *pmf_gpio_methods;
|
extern struct gpio_methods *ftr_gpio_methods;
|
/* extern struct gpio_methods *map_gpio_methods; */
|
|
#endif /* __AOA_H */
|
