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(val: ipsel | (3 << 10), IPSEL);
45
46 ret = -ENOMEM;
47 sh7760_ac97_snd_device = platform_device_alloc(name: "soc-audio", id: -1);
48 if (!sh7760_ac97_snd_device)
49 goto out;
50
51 platform_set_drvdata(pdev: sh7760_ac97_snd_device,
52 data: &sh7760_ac97_soc_machine);
53 ret = platform_device_add(pdev: sh7760_ac97_snd_device);
54
55 if (ret)
56 platform_device_put(pdev: 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>");
73

source code of linux/sound/soc/renesas/sh7760-ac97.c