tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1// SPDX-License-Identifier: GPL-2.0
2//
3// Generic AC97 sound support for SH7760
4//
5// (c) 2007 Manuel Lauss
6
7#include <linux/module.h>
8#include <linux/moduleparam.h>
9#include <linux/platform_device.h>
10#include <sound/core.h>
11#include <sound/pcm.h>
12#include <sound/soc.h>
13#include <asm/io.h>
14
15#define IPSEL 0xFE400034
16
17static struct snd_soc_dai_link sh7760_ac97_dai = {
18 .name = "AC97",
19 .stream_name = "AC97 HiFi",
20 .cpu_dai_name = "hac-dai.0", /* HAC0 */
21 .codec_dai_name = "ac97-hifi",
22 .platform_name = "sh7760-pcm-audio",
23 .codec_name = "ac97-codec",
24 .ops = NULL,
25};
26
27static struct snd_soc_card sh7760_ac97_soc_machine = {
28 .name = "SH7760 AC97",
29 .owner = THIS_MODULE,
30 .dai_link = &sh7760_ac97_dai,
31 .num_links = 1,
32};
33
34static struct platform_device *sh7760_ac97_snd_device;
35
36static int __init sh7760_ac97_init(void)
37{
38 int ret;
39 unsigned short ipsel;
40
41 /* enable both AC97 controllers in pinmux reg */
42 ipsel = __raw_readw(IPSEL);
43 __raw_writew(ipsel | (3 << 10), IPSEL);
44
45 ret = -ENOMEM;
46 sh7760_ac97_snd_device = platform_device_alloc("soc-audio", -1);
47 if (!sh7760_ac97_snd_device)
48 goto out;
49
50 platform_set_drvdata(sh7760_ac97_snd_device,
51 &sh7760_ac97_soc_machine);
52 ret = platform_device_add(sh7760_ac97_snd_device);
53
54 if (ret)
55 platform_device_put(sh7760_ac97_snd_device);
56
57out:
58 return ret;
59}
60
61static void __exit sh7760_ac97_exit(void)
62{
63 platform_device_unregister(sh7760_ac97_snd_device);
64}
65
66module_init(sh7760_ac97_init);
67module_exit(sh7760_ac97_exit);
68
69MODULE_LICENSE("GPL v2");
70MODULE_DESCRIPTION("Generic SH7760 AC97 sound machine");
71MODULE_AUTHOR("Manuel Lauss <mano@roarinelk.homelinux.net>");