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
17SND_SOC_DAILINK_DEFS(ac97,
18	DAILINK_COMP_ARRAY(COMP_CPU("hac-dai.0")),	/* HAC0 */
19	DAILINK_COMP_ARRAY(COMP_CODEC("ac97-codec", "ac97-hifi")),
20	DAILINK_COMP_ARRAY(COMP_PLATFORM("sh7760-pcm-audio")));
21
22static struct snd_soc_dai_link sh7760_ac97_dai = {
23	.name = "AC97",
24	.stream_name = "AC97 HiFi",
25	SND_SOC_DAILINK_REG(ac97),
26};
27
28static struct snd_soc_card sh7760_ac97_soc_machine  = {
29	.name = "SH7760 AC97",
30	.owner = THIS_MODULE,
31	.dai_link = &sh7760_ac97_dai,
32	.num_links = 1,
33};
34
35static struct platform_device *sh7760_ac97_snd_device;
36
37static int __init sh7760_ac97_init(void)
38{
39	int ret;
40	unsigned short ipsel;
41
42	/* enable both AC97 controllers in pinmux reg */
43	ipsel = __raw_readw(IPSEL);
44	__raw_writew(ipsel | (3 << 10), IPSEL);
45
46	ret = -ENOMEM;
47	sh7760_ac97_snd_device = platform_device_alloc("soc-audio", -1);
48	if (!sh7760_ac97_snd_device)
49		goto out;
50
51	platform_set_drvdata(sh7760_ac97_snd_device,
52			     &sh7760_ac97_soc_machine);
53	ret = platform_device_add(sh7760_ac97_snd_device);
54
55	if (ret)
56		platform_device_put(sh7760_ac97_snd_device);
57
58out:
59	return ret;
60}
61
62static void __exit sh7760_ac97_exit(void)
63{
64	platform_device_unregister(sh7760_ac97_snd_device);
65}
66
67module_init(sh7760_ac97_init);
68module_exit(sh7760_ac97_exit);
69
70MODULE_LICENSE("GPL v2");
71MODULE_DESCRIPTION("Generic SH7760 AC97 sound machine");
72MODULE_AUTHOR("Manuel Lauss <mano@roarinelk.homelinux.net>");