2 * Apple Onboard Audio definitions
4 * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
6 * GPL v2, can be found in COPYING.
12 #include <linux/module.h>
13 #include <sound/core.h>
14 #include <sound/asound.h>
15 #include <sound/control.h>
17 #include "soundbus/soundbus.h"
19 #define MAX_CODEC_NAME_LEN 32
22 char name
[MAX_CODEC_NAME_LEN
];
26 /* called when the fabric wants to init this codec.
27 * Do alsa card manipulations from here. */
28 int (*init
)(struct aoa_codec
*codec
);
30 /* called when the fabric is done with the codec.
31 * The alsa card will be cleaned up so don't bother. */
32 void (*exit
)(struct aoa_codec
*codec
);
34 /* May be NULL, but can be used by the fabric.
35 * Refcounting is the codec driver's responsibility */
36 struct device_node
*node
;
38 /* assigned by fabric before init() is called, points
39 * to the soundbus device. Cannot be NULL. */
40 struct soundbus_dev
*soundbus_dev
;
42 /* assigned by the fabric before init() is called, points
43 * to the fabric's gpio runtime record for the relevant
45 struct gpio_runtime
*gpio
;
47 /* assigned by the fabric before init() is called, contains
48 * a codec specific bitmask of what outputs and inputs are
49 * actually connected */
52 /* data the fabric can associate with this structure */
56 struct list_head list
;
57 struct aoa_fabric
*fabric
;
60 /* return 0 on success */
62 aoa_codec_register(struct aoa_codec
*codec
);
64 aoa_codec_unregister(struct aoa_codec
*codec
);
66 #define MAX_LAYOUT_NAME_LEN 32
69 char name
[MAX_LAYOUT_NAME_LEN
];
73 /* once codecs register, they are passed here after.
74 * They are of course not initialised, since the
75 * fabric is responsible for initialising some fields
76 * in the codec structure! */
77 int (*found_codec
)(struct aoa_codec
*codec
);
78 /* called for each codec when it is removed,
79 * also in the case that aoa_fabric_unregister
80 * is called and all codecs are removed
82 * Also called if found_codec returned 0 but
83 * the codec couldn't initialise. */
84 void (*remove_codec
)(struct aoa_codec
*codec
);
85 /* If found_codec returned 0, and the codec
86 * could be initialised, this is called. */
87 void (*attached_codec
)(struct aoa_codec
*codec
);
90 /* return 0 on success, -EEXIST if another fabric is
91 * registered, -EALREADY if the same fabric is registered.
92 * Passing NULL can be used to test for the presence
93 * of another fabric, if -EALREADY is returned there is
94 * no other fabric present.
95 * In the case that the function returns -EALREADY
96 * and the fabric passed is not NULL, all codecs
97 * that are not assigned yet are passed to the fabric
98 * again for reconsideration. */
100 aoa_fabric_register(struct aoa_fabric
*fabric
, struct device
*dev
);
102 /* it is vital to call this when the fabric exits!
103 * When calling, the remove_codec will be called
104 * for all codecs, unless it is NULL. */
106 aoa_fabric_unregister(struct aoa_fabric
*fabric
);
108 /* if for some reason you want to get rid of a codec
109 * before the fabric is removed, use this.
110 * Note that remove_codec is called for it! */
112 aoa_fabric_unlink_codec(struct aoa_codec
*codec
);
114 /* alsa help methods */
116 struct snd_card
*alsa_card
;
119 extern int aoa_snd_device_new(snd_device_type_t type
,
120 void * device_data
, struct snd_device_ops
* ops
);
121 extern struct snd_card
*aoa_get_card(void);
122 extern int aoa_snd_ctl_add(struct snd_kcontrol
* control
);
125 extern struct gpio_methods
*pmf_gpio_methods
;
126 extern struct gpio_methods
*ftr_gpio_methods
;
127 /* extern struct gpio_methods *map_gpio_methods; */
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