sound/soc/sh/fsi-ak4642.c

   1 /*
   2  * FSI-AK464x sound support for ms7724se
   3  *
   4  * Copyright (C) 2009 Renesas Solutions Corp.
   5  * Kuninori Morimoto <morimoto.kuninori@renesas.com>
   6  *
   7  * This file is subject to the terms and conditions of the GNU General Public
   8  * License.  See the file "COPYING" in the main directory of this archive
   9  * for more details.
  10  */
  11
  12 #include <linux/platform_device.h>
  13 #include <linux/module.h>
  14 #include <sound/sh_fsi.h>
  15
  16 struct fsi_ak4642_data {
  17         const char *name;
  18         const char *card;
  19         const char *cpu_dai;
  20         const char *codec;
  21         const char *platform;
  22         int id;
  23 };
  24
  25 static int fsi_ak4642_dai_init(struct snd_soc_pcm_runtime *rtd)
  26 {
  27         struct snd_soc_dai *codec = rtd->codec_dai;
  28         struct snd_soc_dai *cpu = rtd->cpu_dai;
  29         int ret;
  30
  31         ret = snd_soc_dai_set_fmt(codec, SND_SOC_DAIFMT_LEFT_J |
  32                                          SND_SOC_DAIFMT_CBM_CFM);
  33         if (ret < 0)
  34                 return ret;
  35
  36         ret = snd_soc_dai_set_sysclk(codec, 0, 11289600, 0);
  37         if (ret < 0)
  38                 return ret;
  39
  40         ret = snd_soc_dai_set_fmt(cpu, SND_SOC_DAIFMT_LEFT_J |
  41                                        SND_SOC_DAIFMT_CBS_CFS);
  42
  43         return ret;
  44 }
  45
  46 static struct snd_soc_dai_link fsi_dai_link = {
  47         .codec_dai_name = "ak4642-hifi",
  48         .init           = fsi_ak4642_dai_init,
  49 };
  50
  51 static struct snd_soc_card fsi_soc_card  = {
  52         .owner          = THIS_MODULE,
  53         .dai_link       = &fsi_dai_link,
  54         .num_links      = 1,
  55 };
  56
  57 static struct platform_device *fsi_snd_device;
  58
  59 static int fsi_ak4642_probe(struct platform_device *pdev)
  60 {
  61         int ret = -ENOMEM;
  62         struct fsi_ak4642_info *pinfo = pdev->dev.platform_data;
  63
  64         if (!pinfo) {
  65                 dev_err(&pdev->dev, "no info for fsi ak4642\n");
  66                 goto out;
  67         }
  68
  69         fsi_snd_device = platform_device_alloc("soc-audio", pinfo->id);
  70         if (!fsi_snd_device)
  71                 goto out;
  72
  73         fsi_dai_link.name               = pinfo->name;
  74         fsi_dai_link.stream_name        = pinfo->name;
  75         fsi_dai_link.cpu_dai_name       = pinfo->cpu_dai;
  76         fsi_dai_link.platform_name      = pinfo->platform;
  77         fsi_dai_link.codec_name         = pinfo->codec;
  78         fsi_soc_card.name               = pinfo->card;
  79
  80         platform_set_drvdata(fsi_snd_device, &fsi_soc_card);
  81         ret = platform_device_add(fsi_snd_device);
  82
  83         if (ret)
  84                 platform_device_put(fsi_snd_device);
  85
  86 out:
  87         return ret;
  88 }
  89
  90 static int fsi_ak4642_remove(struct platform_device *pdev)
  91 {
  92         platform_device_unregister(fsi_snd_device);
  93         return 0;
  94 }
  95
  96 static struct platform_driver fsi_ak4642 = {
  97         .driver = {
  98                 .name   = "fsi-ak4642-audio",
  99         },
 100         .probe          = fsi_ak4642_probe,
 101         .remove         = fsi_ak4642_remove,
 102 };
 103
 104 module_platform_driver(fsi_ak4642);
 105
 106 MODULE_LICENSE("GPL");
 107 MODULE_DESCRIPTION("Generic SH4 FSI-AK4642 sound card");
 108 MODULE_AUTHOR("Kuninori Morimoto <morimoto.kuninori@renesas.com>");