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1 | /* |
2 | * Apple Onboard Audio definitions |
3 | * |
4 | * Copyright 2006 Johannes Berg <johannes@sipsolutions.net> |
5 | * |
6 | * GPL v2, can be found in COPYING. |
7 | */ |
8 | |
9 | #ifndef __AOA_H |
10 | #define __AOA_H |
11 | #include <asm/prom.h> |
12 | #include <linux/module.h> |
13 | #include <sound/core.h> |
14 | #include <sound/asound.h> |
15 | #include <sound/control.h> |
16 | #include "aoa-gpio.h" |
17 | #include "soundbus/soundbus.h" |
18 | |
19 | #define MAX_CODEC_NAME_LEN 32 |
20 | |
21 | struct aoa_codec { |
22 | char name[MAX_CODEC_NAME_LEN]; |
23 | |
24 | struct module *owner; |
25 | |
26 | /* called when the fabric wants to init this codec. |
27 | * Do alsa card manipulations from here. */ |
28 | int (*init)(struct aoa_codec *codec); |
29 | |
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); |
33 | |
34 | /* May be NULL, but can be used by the fabric. |
35 | * Refcounting is the codec driver's responsibility */ |
36 | struct device_node *node; |
37 | |
38 | /* assigned by fabric before init() is called, points |
39 | * to the soundbus device. Cannot be NULL. */ |
40 | struct soundbus_dev *soundbus_dev; |
41 | |
42 | /* assigned by the fabric before init() is called, points |
43 | * to the fabric's gpio runtime record for the relevant |
44 | * device. */ |
45 | struct gpio_runtime *gpio; |
46 | |
47 | /* assigned by the fabric before init() is called, contains |
48 | * a codec specific bitmask of what outputs and inputs are |
49 | * actually connected */ |
50 | u32 connected; |
51 | |
52 | /* data the fabric can associate with this structure */ |
53 | void *fabric_data; |
54 | |
55 | /* private! */ |
56 | struct list_head list; |
57 | struct aoa_fabric *fabric; |
58 | }; |
59 | |
60 | /* return 0 on success */ |
61 | extern int |
62 | aoa_codec_register(struct aoa_codec *codec); |
63 | extern void |
64 | aoa_codec_unregister(struct aoa_codec *codec); |
65 | |
66 | #define MAX_LAYOUT_NAME_LEN 32 |
67 | |
68 | struct aoa_fabric { |
69 | char name[MAX_LAYOUT_NAME_LEN]; |
70 | |
71 | struct module *owner; |
72 | |
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 |
81 | * from this fabric. |
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); |
88 | }; |
89 | |
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. */ |
99 | extern int |
100 | aoa_fabric_register(struct aoa_fabric *fabric, struct device *dev); |
101 | |
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. */ |
105 | extern void |
106 | aoa_fabric_unregister(struct aoa_fabric *fabric); |
107 | |
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! */ |
111 | extern void |
112 | aoa_fabric_unlink_codec(struct aoa_codec *codec); |
113 | |
114 | /* alsa help methods */ |
115 | struct aoa_card { |
116 | struct snd_card *alsa_card; |
117 | }; |
118 | |
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); |
123 | |
124 | /* GPIO stuff */ |
125 | extern struct gpio_methods *pmf_gpio_methods; |
126 | extern struct gpio_methods *ftr_gpio_methods; |
127 | /* extern struct gpio_methods *map_gpio_methods; */ |
128 | |
129 | #endif /* __AOA_H */ |
130 |
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