1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Apple Onboard Audio definitions
5 * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
11 #include <linux/module.h>
12 #include <sound/core.h>
13 #include <sound/asound.h>
14 #include <sound/control.h>
16 #include "soundbus/soundbus.h"
18 #define MAX_CODEC_NAME_LEN 32
21 char name[MAX_CODEC_NAME_LEN];
25 /* called when the fabric wants to init this codec.
26 * Do alsa card manipulations from here. */
27 int (*init)(struct aoa_codec *codec);
29 /* called when the fabric is done with the codec.
30 * The alsa card will be cleaned up so don't bother. */
31 void (*exit)(struct aoa_codec *codec);
33 /* May be NULL, but can be used by the fabric.
34 * Refcounting is the codec driver's responsibility */
35 struct device_node *node;
37 /* assigned by fabric before init() is called, points
38 * to the soundbus device. Cannot be NULL. */
39 struct soundbus_dev *soundbus_dev;
41 /* assigned by the fabric before init() is called, points
42 * to the fabric's gpio runtime record for the relevant
44 struct gpio_runtime *gpio;
46 /* assigned by the fabric before init() is called, contains
47 * a codec specific bitmask of what outputs and inputs are
48 * actually connected */
51 /* data the fabric can associate with this structure */
55 struct list_head list;
56 struct aoa_fabric *fabric;
59 /* return 0 on success */
61 aoa_codec_register(struct aoa_codec *codec);
63 aoa_codec_unregister(struct aoa_codec *codec);
65 #define MAX_LAYOUT_NAME_LEN 32
68 char name[MAX_LAYOUT_NAME_LEN];
72 /* once codecs register, they are passed here after.
73 * They are of course not initialised, since the
74 * fabric is responsible for initialising some fields
75 * in the codec structure! */
76 int (*found_codec)(struct aoa_codec *codec);
77 /* called for each codec when it is removed,
78 * also in the case that aoa_fabric_unregister
79 * is called and all codecs are removed
81 * Also called if found_codec returned 0 but
82 * the codec couldn't initialise. */
83 void (*remove_codec)(struct aoa_codec *codec);
84 /* If found_codec returned 0, and the codec
85 * could be initialised, this is called. */
86 void (*attached_codec)(struct aoa_codec *codec);
89 /* return 0 on success, -EEXIST if another fabric is
90 * registered, -EALREADY if the same fabric is registered.
91 * Passing NULL can be used to test for the presence
92 * of another fabric, if -EALREADY is returned there is
93 * no other fabric present.
94 * In the case that the function returns -EALREADY
95 * and the fabric passed is not NULL, all codecs
96 * that are not assigned yet are passed to the fabric
97 * again for reconsideration. */
99 aoa_fabric_register(struct aoa_fabric *fabric, struct device *dev);
101 /* it is vital to call this when the fabric exits!
102 * When calling, the remove_codec will be called
103 * for all codecs, unless it is NULL. */
105 aoa_fabric_unregister(struct aoa_fabric *fabric);
107 /* if for some reason you want to get rid of a codec
108 * before the fabric is removed, use this.
109 * Note that remove_codec is called for it! */
111 aoa_fabric_unlink_codec(struct aoa_codec *codec);
113 /* alsa help methods */
115 struct snd_card *alsa_card;
118 extern int aoa_snd_device_new(enum snd_device_type type,
119 void *device_data, const struct snd_device_ops *ops);
120 extern struct snd_card *aoa_get_card(void);
121 extern int aoa_snd_ctl_add(struct snd_kcontrol* control);
124 extern struct gpio_methods *pmf_gpio_methods;
125 extern struct gpio_methods *ftr_gpio_methods;
126 /* extern struct gpio_methods *map_gpio_methods; */