Merge branch 'devel' into next
[linux-2.6] / sound / soc / sh / sh7760-ac97.c
1 /*
2  * Generic AC97 sound support for SH7760
3  *
4  * (c) 2007 Manuel Lauss
5  *
6  * Licensed under the GPLv2.
7  */
8
9 #include <linux/module.h>
10 #include <linux/moduleparam.h>
11 #include <linux/platform_device.h>
12 #include <sound/core.h>
13 #include <sound/pcm.h>
14 #include <sound/soc.h>
15 #include <sound/soc-dapm.h>
16 #include <asm/io.h>
17
18 #include "../codecs/ac97.h"
19
20 #define IPSEL 0xFE400034
21
22 /* platform specific structs can be declared here */
23 extern struct snd_soc_dai sh4_hac_dai[2];
24 extern struct snd_soc_platform sh7760_soc_platform;
25
26 static int machine_init(struct snd_soc_codec *codec)
27 {
28         snd_soc_dapm_sync(codec);
29         return 0;
30 }
31
32 static struct snd_soc_dai_link sh7760_ac97_dai = {
33         .name = "AC97",
34         .stream_name = "AC97 HiFi",
35         .cpu_dai = &sh4_hac_dai[0],     /* HAC0 */
36         .codec_dai = &ac97_dai,
37         .init = machine_init,
38         .ops = NULL,
39 };
40
41 static struct snd_soc_machine sh7760_ac97_soc_machine  = {
42         .name = "SH7760 AC97",
43         .dai_link = &sh7760_ac97_dai,
44         .num_links = 1,
45 };
46
47 static struct snd_soc_device sh7760_ac97_snd_devdata = {
48         .machine = &sh7760_ac97_soc_machine,
49         .platform = &sh7760_soc_platform,
50         .codec_dev = &soc_codec_dev_ac97,
51 };
52
53 static struct platform_device *sh7760_ac97_snd_device;
54
55 static int __init sh7760_ac97_init(void)
56 {
57         int ret;
58         unsigned short ipsel;
59
60         /* enable both AC97 controllers in pinmux reg */
61         ipsel = ctrl_inw(IPSEL);
62         ctrl_outw(ipsel | (3 << 10), IPSEL);
63
64         ret = -ENOMEM;
65         sh7760_ac97_snd_device = platform_device_alloc("soc-audio", -1);
66         if (!sh7760_ac97_snd_device)
67                 goto out;
68
69         platform_set_drvdata(sh7760_ac97_snd_device,
70                              &sh7760_ac97_snd_devdata);
71         sh7760_ac97_snd_devdata.dev = &sh7760_ac97_snd_device->dev;
72         ret = platform_device_add(sh7760_ac97_snd_device);
73
74         if (ret)
75                 platform_device_put(sh7760_ac97_snd_device);
76
77 out:
78         return ret;
79 }
80
81 static void __exit sh7760_ac97_exit(void)
82 {
83         platform_device_unregister(sh7760_ac97_snd_device);
84 }
85
86 module_init(sh7760_ac97_init);
87 module_exit(sh7760_ac97_exit);
88
89 MODULE_LICENSE("GPL");
90 MODULE_DESCRIPTION("Generic SH7760 AC97 sound machine");
91 MODULE_AUTHOR("Manuel Lauss <mano@roarinelk.homelinux.net>");