1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* Apple Onboard Audio Alsa helpers
*
* Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
*/
#include <linux/module.h>
#include "alsa.h"
static int index = -1;
module_param(index, int, 0444);
MODULE_PARM_DESC(index, "index for AOA sound card.");
static struct aoa_card *aoa_card;
int aoa_alsa_init(char *name, struct module *mod, struct device *dev)
{
struct snd_card *alsa_card;
int err;
if (aoa_card)
/* cannot be EEXIST due to usage in aoa_fabric_register */
return -EBUSY;
err = snd_card_new(dev, index, name, mod, sizeof(struct aoa_card),
&alsa_card);
if (err < 0)
return err;
aoa_card = alsa_card->private_data;
aoa_card->alsa_card = alsa_card;
strlcpy(alsa_card->driver, "AppleOnbdAudio", sizeof(alsa_card->driver));
strlcpy(alsa_card->shortname, name, sizeof(alsa_card->shortname));
strlcpy(alsa_card->longname, name, sizeof(alsa_card->longname));
strlcpy(alsa_card->mixername, name, sizeof(alsa_card->mixername));
err = snd_card_register(aoa_card->alsa_card);
if (err < 0) {
printk(KERN_ERR "snd-aoa: couldn't register alsa card\n");
snd_card_free(aoa_card->alsa_card);
aoa_card = NULL;
return err;
}
return 0;
}
struct snd_card *aoa_get_card(void)
{
if (aoa_card)
return aoa_card->alsa_card;
return NULL;
}
EXPORT_SYMBOL_GPL(aoa_get_card);
void aoa_alsa_cleanup(void)
{
if (aoa_card) {
snd_card_free(aoa_card->alsa_card);
aoa_card = NULL;
}
}
int aoa_snd_device_new(enum snd_device_type type,
void * device_data, struct snd_device_ops * ops)
{
struct snd_card *card = aoa_get_card();
int err;
if (!card) return -ENOMEM;
err = snd_device_new(card, type, device_data, ops);
if (err) {
printk(KERN_ERR "snd-aoa: failed to create snd device (%d)\n", err);
return err;
}
err = snd_device_register(card, device_data);
if (err) {
printk(KERN_ERR "snd-aoa: failed to register "
"snd device (%d)\n", err);
printk(KERN_ERR "snd-aoa: have you forgotten the "
"dev_register callback?\n");
snd_device_free(card, device_data);
}
return err;
}
EXPORT_SYMBOL_GPL(aoa_snd_device_new);
int aoa_snd_ctl_add(struct snd_kcontrol* control)
{
int err;
if (!aoa_card) return -ENODEV;
err = snd_ctl_add(aoa_card->alsa_card, control);
if (err)
printk(KERN_ERR "snd-aoa: failed to add alsa control (%d)\n",
err);
return err;
}
EXPORT_SYMBOL_GPL(aoa_snd_ctl_add);
|
