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/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/i2c.h>
  16 #include <linux/io.h>
  17 #include <sound/core.h>
  18 #include <sound/pcm.h>
  19 #include <sound/soc.h>
  20 #include <sound/soc-dapm.h>
  21
  22 #include <sound/sh_fsi.h>
  23 #include <../sound/soc/codecs/ak4642.h>
  24
  25 static struct snd_soc_dai_link fsi_dai_link = {
  26         .name           = "AK4642",
  27         .stream_name    = "AK4642",
  28         .cpu_dai        = &fsi_soc_dai[0], /* fsi */
  29         .codec_dai      = &ak4642_dai,
  30         .ops            = NULL,
  31 };
  32
  33 static struct snd_soc_card fsi_soc_card  = {
  34         .name           = "FSI",
  35         .platform       = &fsi_soc_platform,
  36         .dai_link       = &fsi_dai_link,
  37         .num_links      = 1,
  38 };
  39
  40 static struct snd_soc_device fsi_snd_devdata = {
  41         .card           = &fsi_soc_card,
  42         .codec_dev      = &soc_codec_dev_ak4642,
  43 };
  44
  45 #define AK4642_BUS 0
  46 #define AK4642_ADR 0x12
  47 static int ak4642_add_i2c_device(void)
  48 {
  49         struct i2c_board_info info;
  50         struct i2c_adapter *adapter;
  51         struct i2c_client *client;
  52
  53         memset(&info, 0, sizeof(struct i2c_board_info));
  54         info.addr = AK4642_ADR;
  55         strlcpy(info.type, "ak4642", I2C_NAME_SIZE);
  56
  57         adapter = i2c_get_adapter(AK4642_BUS);
  58         if (!adapter) {
  59                 printk(KERN_DEBUG "can't get i2c adapter\n");
  60                 return -ENODEV;
  61         }
  62
  63         client = i2c_new_device(adapter, &info);
  64         i2c_put_adapter(adapter);
  65         if (!client) {
  66                 printk(KERN_DEBUG "can't add i2c device\n");
  67                 return -ENODEV;
  68         }
  69
  70         return 0;
  71 }
  72
  73 static struct platform_device *fsi_snd_device;
  74
  75 static int __init fsi_ak4642_init(void)
  76 {
  77         int ret = -ENOMEM;
  78
  79         ak4642_add_i2c_device();
  80
  81         fsi_snd_device = platform_device_alloc("soc-audio", -1);
  82         if (!fsi_snd_device)
  83                 goto out;
  84
  85         platform_set_drvdata(fsi_snd_device,
  86                              &fsi_snd_devdata);
  87         fsi_snd_devdata.dev = &fsi_snd_device->dev;
  88         ret = platform_device_add(fsi_snd_device);
  89
  90         if (ret)
  91                 platform_device_put(fsi_snd_device);
  92
  93 out:
  94         return ret;
  95 }
  96
  97 static void __exit fsi_ak4642_exit(void)
  98 {
  99         platform_device_unregister(fsi_snd_device);
 100 }
 101
 102 module_init(fsi_ak4642_init);
 103 module_exit(fsi_ak4642_exit);
 104
 105 MODULE_LICENSE("GPL");
 106 MODULE_DESCRIPTION("Generic SH4 FSI-AK4642 sound card");
 107 MODULE_AUTHOR("Kuninori Morimoto <morimoto.kuninori@renesas.com>");