kernel/2.6.29.6-aldebaran-rt/sound/soc/blackfin/bf5xx-ad1980.c

   1 /*
   2  * File:         sound/soc/blackfin/bf5xx-ad1980.c
   3  * Author:       Cliff Cai <Cliff.Cai@analog.com>
   4  *
   5  * Created:      Tue June 06 2008
   6  * Description:  Board driver for AD1980/1 audio codec
   7  *
   8  * Modified:
   9  *               Copyright 2008 Analog Devices Inc.
  10  *
  11  * Bugs:         Enter bugs at http://blackfin.uclinux.org/
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 2 of the License, or
  16  * (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, see the file COPYING, or write
  25  * to the Free Software Foundation, Inc.,
  26  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  27  */
  28
  29 #include <linux/module.h>
  30 #include <linux/moduleparam.h>
  31 #include <linux/device.h>
  32 #include <asm/dma.h>
  33
  34 #include <sound/core.h>
  35 #include <sound/pcm.h>
  36 #include <sound/soc.h>
  37
  38 #include <linux/gpio.h>
  39 #include <asm/portmux.h>
  40
  41 #include "../codecs/ad1980.h"
  42 #include "bf5xx-sport.h"
  43 #include "bf5xx-ac97-pcm.h"
  44 #include "bf5xx-ac97.h"
  45
  46 static struct snd_soc_card bf5xx_board;
  47
  48 static int bf5xx_board_startup(struct snd_pcm_substream *substream)
  49 {
  50         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  51         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
  52
  53         pr_debug("%s enter\n", __func__);
  54         cpu_dai->private_data = sport_handle;
  55         return 0;
  56 }
  57
  58 static struct snd_soc_ops bf5xx_board_ops = {
  59         .startup = bf5xx_board_startup,
  60 };
  61
  62 static struct snd_soc_dai_link bf5xx_board_dai = {
  63         .name = "AC97",
  64         .stream_name = "AC97 HiFi",
  65         .cpu_dai = &bfin_ac97_dai,
  66         .codec_dai = &ad1980_dai,
  67         .ops = &bf5xx_board_ops,
  68 };
  69
  70 static struct snd_soc_card bf5xx_board = {
  71         .name = "bf5xx-board",
  72         .platform = &bf5xx_ac97_soc_platform,
  73         .dai_link = &bf5xx_board_dai,
  74         .num_links = 1,
  75 };
  76
  77 static struct snd_soc_device bf5xx_board_snd_devdata = {
  78         .card = &bf5xx_board,
  79         .codec_dev = &soc_codec_dev_ad1980,
  80 };
  81
  82 static struct platform_device *bf5xx_board_snd_device;
  83
  84 static int __init bf5xx_board_init(void)
  85 {
  86         int ret;
  87
  88         bf5xx_board_snd_device = platform_device_alloc("soc-audio", -1);
  89         if (!bf5xx_board_snd_device)
  90                 return -ENOMEM;
  91
  92         platform_set_drvdata(bf5xx_board_snd_device, &bf5xx_board_snd_devdata);
  93         bf5xx_board_snd_devdata.dev = &bf5xx_board_snd_device->dev;
  94         ret = platform_device_add(bf5xx_board_snd_device);
  95
  96         if (ret)
  97                 platform_device_put(bf5xx_board_snd_device);
  98
  99         return ret;
 100 }
 101
 102 static void __exit bf5xx_board_exit(void)
 103 {
 104         platform_device_unregister(bf5xx_board_snd_device);
 105 }
 106
 107 module_init(bf5xx_board_init);
 108 module_exit(bf5xx_board_exit);
 109
 110 /* Module information */
 111 MODULE_AUTHOR("Cliff Cai");
 112 MODULE_DESCRIPTION("ALSA SoC AD1980/1 BF5xx board");
 113 MODULE_LICENSE("GPL");