2 * ASoC simple sound card support
4 * Copyright (C) 2012 Renesas Solutions Corp.
5 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
12 #include <linux/platform_device.h>
13 #include <linux/module.h>
14 #include <sound/simple_card.h>
16 #define asoc_simple_get_card_info(p) \
17 container_of(p->dai_link, struct asoc_simple_card_info, snd_link)
19 static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd)
21 struct asoc_simple_card_info *cinfo = asoc_simple_get_card_info(rtd);
22 struct asoc_simple_dai_init_info *iinfo = cinfo->init;
23 struct snd_soc_dai *codec = rtd->codec_dai;
24 struct snd_soc_dai *cpu = rtd->cpu_dai;
25 unsigned int cpu_daifmt = iinfo->fmt | iinfo->cpu_daifmt;
26 unsigned int codec_daifmt = iinfo->fmt | iinfo->codec_daifmt;
30 ret = snd_soc_dai_set_fmt(codec, codec_daifmt);
36 ret = snd_soc_dai_set_sysclk(codec, 0, iinfo->sysclk, 0);
42 ret = snd_soc_dai_set_fmt(cpu, cpu_daifmt);
50 static int asoc_simple_card_probe(struct platform_device *pdev)
52 struct asoc_simple_card_info *cinfo = pdev->dev.platform_data;
55 dev_err(&pdev->dev, "no info for asoc-simple-card\n");
65 dev_err(&pdev->dev, "insufficient asoc_simple_card_info settings\n");
70 * init snd_soc_dai_link
72 cinfo->snd_link.name = cinfo->name;
73 cinfo->snd_link.stream_name = cinfo->name;
74 cinfo->snd_link.cpu_dai_name = cinfo->cpu_dai;
75 cinfo->snd_link.platform_name = cinfo->platform;
76 cinfo->snd_link.codec_name = cinfo->codec;
77 cinfo->snd_link.codec_dai_name = cinfo->codec_dai;
79 /* enable snd_link.init if cinfo has settings */
81 cinfo->snd_link.init = asoc_simple_card_dai_init;
86 cinfo->snd_card.name = cinfo->card;
87 cinfo->snd_card.owner = THIS_MODULE;
88 cinfo->snd_card.dai_link = &cinfo->snd_link;
89 cinfo->snd_card.num_links = 1;
90 cinfo->snd_card.dev = &pdev->dev;
92 return snd_soc_register_card(&cinfo->snd_card);
95 static int asoc_simple_card_remove(struct platform_device *pdev)
97 struct asoc_simple_card_info *cinfo = pdev->dev.platform_data;
99 return snd_soc_unregister_card(&cinfo->snd_card);
102 static struct platform_driver asoc_simple_card = {
104 .name = "asoc-simple-card",
106 .probe = asoc_simple_card_probe,
107 .remove = asoc_simple_card_remove,
110 module_platform_driver(asoc_simple_card);
112 MODULE_LICENSE("GPL");
113 MODULE_DESCRIPTION("ASoC Simple Sound Card");
114 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");