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