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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/sound/soc/sh/sh7760-ac97.c
10817 views
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/*

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 * Generic AC97 sound support for SH7760

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 *

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 * (c) 2007 Manuel Lauss

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 *

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 * Licensed under the GPLv2.

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 */

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#include <linux/module.h>

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#include <linux/moduleparam.h>

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#include <linux/platform_device.h>

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#include <sound/core.h>

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#include <sound/pcm.h>

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#include <sound/soc.h>

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#include <asm/io.h>

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#define IPSEL 0xFE400034

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/* platform specific structs can be declared here */

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extern struct snd_soc_dai_driver sh4_hac_dai[2];

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extern struct snd_soc_platform_driver sh7760_soc_platform;

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static int machine_init(struct snd_soc_pcm_runtime *rtd)

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{

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	snd_soc_dapm_sync(&rtd->codec->dapm);

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	return 0;

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}

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static struct snd_soc_dai_link sh7760_ac97_dai = {

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	.name = "AC97",

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	.stream_name = "AC97 HiFi",

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	.cpu_dai_name = "hac-dai.0",	/* HAC0 */

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	.codec_dai_name = "ac97-hifi",

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	.platform_name = "sh7760-pcm-audio",

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	.codec_name = "ac97-codec",

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	.init = machine_init,

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	.ops = NULL,

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};

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static struct snd_soc_card sh7760_ac97_soc_machine  = {

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	.name = "SH7760 AC97",

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	.dai_link = &sh7760_ac97_dai,

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	.num_links = 1,

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};

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static struct platform_device *sh7760_ac97_snd_device;

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static int __init sh7760_ac97_init(void)

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{

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	int ret;

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	unsigned short ipsel;

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	/* enable both AC97 controllers in pinmux reg */

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	ipsel = __raw_readw(IPSEL);

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	__raw_writew(ipsel | (3 << 10), IPSEL);

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	ret = -ENOMEM;

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	sh7760_ac97_snd_device = platform_device_alloc("soc-audio", -1);

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	if (!sh7760_ac97_snd_device)

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		goto out;

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	platform_set_drvdata(sh7760_ac97_snd_device,

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			     &sh7760_ac97_soc_machine);

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	ret = platform_device_add(sh7760_ac97_snd_device);

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	if (ret)

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		platform_device_put(sh7760_ac97_snd_device);

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out:

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	return ret;

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}

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static void __exit sh7760_ac97_exit(void)

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{

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	platform_device_unregister(sh7760_ac97_snd_device);

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}

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module_init(sh7760_ac97_init);

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module_exit(sh7760_ac97_exit);

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MODULE_LICENSE("GPL");

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MODULE_DESCRIPTION("Generic SH7760 AC97 sound machine");

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MODULE_AUTHOR("Manuel Lauss <[email protected]>");

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