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/*
* ASoC simple sound card support
*
* Copyright (C) 2012 Renesas Solutions Corp.
* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/platform_device.h>
#include <linux/module.h>
#include <sound/simple_card.h>
#define asoc_simple_get_card_info(p) \
container_of(p->dai_link, struct asoc_simple_card_info, snd_link)
static int __asoc_simple_card_dai_init(struct snd_soc_dai *dai,
struct asoc_simple_dai *set,
unsigned int daifmt)
{
int ret = 0;
daifmt |= set->fmt;
if (!ret && daifmt)
ret = snd_soc_dai_set_fmt(dai, daifmt);
if (!ret && set->sysclk)
ret = snd_soc_dai_set_sysclk(dai, 0, set->sysclk, 0);
return ret;
}
static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd)
{
struct asoc_simple_card_info *info = asoc_simple_get_card_info(rtd);
struct snd_soc_dai *codec = rtd->codec_dai;
struct snd_soc_dai *cpu = rtd->cpu_dai;
unsigned int daifmt = info->daifmt;
int ret;
ret = __asoc_simple_card_dai_init(codec, &info->codec_dai, daifmt);
if (ret < 0)
return ret;
ret = __asoc_simple_card_dai_init(cpu, &info->cpu_dai, daifmt);
if (ret < 0)
return ret;
return 0;
}
static int asoc_simple_card_probe(struct platform_device *pdev)
{
struct asoc_simple_card_info *cinfo = pdev->dev.platform_data;
struct device *dev = &pdev->dev;
if (!cinfo) {
dev_err(dev, "no info for asoc-simple-card\n");
return -EINVAL;
}
if (!cinfo->name ||
!cinfo->card ||
!cinfo->codec ||
!cinfo->platform ||
!cinfo->cpu_dai.name ||
!cinfo->codec_dai.name) {
dev_err(dev, "insufficient asoc_simple_card_info settings\n");
return -EINVAL;
}
/*
* init snd_soc_dai_link
*/
cinfo->snd_link.name = cinfo->name;
cinfo->snd_link.stream_name = cinfo->name;
cinfo->snd_link.cpu_dai_name = cinfo->cpu_dai.name;
cinfo->snd_link.platform_name = cinfo->platform;
cinfo->snd_link.codec_name = cinfo->codec;
cinfo->snd_link.codec_dai_name = cinfo->codec_dai.name;
cinfo->snd_link.init = asoc_simple_card_dai_init;
/*
* init snd_soc_card
*/
cinfo->snd_card.name = cinfo->card;
cinfo->snd_card.owner = THIS_MODULE;
cinfo->snd_card.dai_link = &cinfo->snd_link;
cinfo->snd_card.num_links = 1;
cinfo->snd_card.dev = &pdev->dev;
return snd_soc_register_card(&cinfo->snd_card);
}
static int asoc_simple_card_remove(struct platform_device *pdev)
{
struct asoc_simple_card_info *cinfo = pdev->dev.platform_data;
return snd_soc_unregister_card(&cinfo->snd_card);
}
static struct platform_driver asoc_simple_card = {
.driver = {
.name = "asoc-simple-card",
.owner = THIS_MODULE,
},
.probe = asoc_simple_card_probe,
.remove = asoc_simple_card_remove,
};
module_platform_driver(asoc_simple_card);
MODULE_ALIAS("platform:asoc-simple-card");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("ASoC Simple Sound Card");
MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
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