a4a2992c53
Current simple-card driver calls asoc_simple_card_dai_init() if platform had a asoc_simple_card_dai_init pointer. And, this initialization function works only when platform has an applicable initial value for each dai settings. And basically, almost all sound card requires certain initialization. This means that almost all platform has initialization settings, and driver do nothing if it doesn't have settings. And additionally, current simple-card supports sysclk settings but it was only for codec. In order to abolish deviation between cpu and codec, and in order to simplify processing, this patch adds asoc_simple_dai, and removed pointless struct asoc_simple_dai_init_info which was trigger of calling asoc_simple_card_dai_init(). Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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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