projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| f2390880 KM |
1 | /* |
| 2 | * ASoC simple sound card support | |
| 3 | * | |
| 4 | * Copyright (C) 2012 Renesas Solutions Corp. | |
| 5 | * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | |
| 6 | * | |
| 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. | |
| 10 | */ | |
| 11 | ||
| 12 | #include <linux/platform_device.h> | |
| 13 | #include <linux/module.h> | |
| 14 | #include <sound/simple_card.h> | |
| 15 | ||
| 16 | #define asoc_simple_get_card_info(p) \ | |
| 17 | container_of(p->dai_link, struct asoc_simple_card_info, snd_link) | |
| 18 | ||
| 19 | static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd) | |
| 20 | { | |
| 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; | |
| 27 | int ret; | |
| 28 | ||
| 29 | if (codec_daifmt) { | |
| 30 | ret = snd_soc_dai_set_fmt(codec, codec_daifmt); | |
| 31 | if (ret < 0) | |
| 32 | return ret; | |
| 33 | } | |
| 34 | ||
| 35 | if (iinfo->sysclk) { | |
| 36 | ret = snd_soc_dai_set_sysclk(codec, 0, iinfo->sysclk, 0); | |
| 37 | if (ret < 0) | |
| 38 | return ret; | |
| 39 | } | |
| 40 | ||
| 41 | if (cpu_daifmt) { | |
| 42 | ret = snd_soc_dai_set_fmt(cpu, cpu_daifmt); | |
| 43 | if (ret < 0) | |
| 44 | return ret; | |
| 45 | } | |
| 46 | ||
| 47 | return 0; | |
| 48 | } | |
| 49 | ||
| 50 | static int asoc_simple_card_probe(struct platform_device *pdev) | |
| 51 | { | |
| 52 | struct asoc_simple_card_info *cinfo = pdev->dev.platform_data; | |
| f89983ef | 53 | struct device *dev = &pdev->dev; |
| f2390880 KM |
54 | |
| 55 | if (!cinfo) { | |
| f89983ef | 56 | dev_err(dev, "no info for asoc-simple-card\n"); |
| f2390880 KM |
57 | return -EINVAL; |
| 58 | } | |
| 59 | ||
| 60 | if (!cinfo->name || | |
| 61 | !cinfo->card || | |
| 62 | !cinfo->cpu_dai || | |
| 63 | !cinfo->codec || | |
| 64 | !cinfo->platform || | |
| 65 | !cinfo->codec_dai) { | |
| f89983ef | 66 | dev_err(dev, "insufficient asoc_simple_card_info settings\n"); |
| f2390880 KM |
67 | return -EINVAL; |
| 68 | } | |
| 69 | ||
| 70 | /* | |
| 71 | * init snd_soc_dai_link | |
| 72 | */ | |
| 73 | cinfo->snd_link.name = cinfo->name; | |
| 74 | cinfo->snd_link.stream_name = cinfo->name; | |
| 75 | cinfo->snd_link.cpu_dai_name = cinfo->cpu_dai; | |
| 76 | cinfo->snd_link.platform_name = cinfo->platform; | |
| 77 | cinfo->snd_link.codec_name = cinfo->codec; | |
| 78 | cinfo->snd_link.codec_dai_name = cinfo->codec_dai; | |
| 79 | ||
| 80 | /* enable snd_link.init if cinfo has settings */ | |
| 81 | if (cinfo->init) | |
| 82 | cinfo->snd_link.init = asoc_simple_card_dai_init; | |
| 83 | ||
| 84 | /* | |
| 85 | * init snd_soc_card | |
| 86 | */ | |
| 87 | cinfo->snd_card.name = cinfo->card; | |
| 88 | cinfo->snd_card.owner = THIS_MODULE; | |
| 89 | cinfo->snd_card.dai_link = &cinfo->snd_link; | |
| 90 | cinfo->snd_card.num_links = 1; | |
| 91 | cinfo->snd_card.dev = &pdev->dev; | |
| 92 | ||
| 93 | return snd_soc_register_card(&cinfo->snd_card); | |
| 94 | } | |
| 95 | ||
| 96 | static int asoc_simple_card_remove(struct platform_device *pdev) | |
| 97 | { | |
| 98 | struct asoc_simple_card_info *cinfo = pdev->dev.platform_data; | |
| 99 | ||
| 100 | return snd_soc_unregister_card(&cinfo->snd_card); | |
| 101 | } | |
| 102 | ||
| 103 | static struct platform_driver asoc_simple_card = { | |
| 104 | .driver = { | |
| 105 | .name = "asoc-simple-card", | |
| 106 | }, | |
| 107 | .probe = asoc_simple_card_probe, | |
| 108 | .remove = asoc_simple_card_remove, | |
| 109 | }; | |
| 110 | ||
| 111 | module_platform_driver(asoc_simple_card); | |
| 112 | ||
| 113 | MODULE_LICENSE("GPL"); | |
| 114 | MODULE_DESCRIPTION("ASoC Simple Sound Card"); | |
| 115 | MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); |