sound/soc/blackfin/bf5xx-ad193x.c

   1 /*
   2  * File:         sound/soc/blackfin/bf5xx-ad193x.c
   3  * Author:       Barry Song <Barry.Song@analog.com>
   4  *
   5  * Created:      Thur June 4 2009
   6  * Description:  Board driver for ad193x sound chip
   7  *
   8  * Bugs:         Enter bugs at http://blackfin.uclinux.org/
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, see the file COPYING, or write
  22  * to the Free Software Foundation, Inc.,
  23  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  24  */
  25
  26 #include <linux/module.h>
  27 #include <linux/moduleparam.h>
  28 #include <linux/device.h>
  29 #include <sound/core.h>
  30 #include <sound/pcm.h>
  31 #include <sound/soc.h>
  32 #include <sound/pcm_params.h>
  33
  34 #include <asm/blackfin.h>
  35 #include <asm/cacheflush.h>
  36 #include <asm/irq.h>
  37 #include <asm/dma.h>
  38 #include <asm/portmux.h>
  39
  40 #include "../codecs/ad193x.h"
  41
  42 static struct snd_soc_card bf5xx_ad193x;
  43
  44 static int bf5xx_ad193x_link_init(struct snd_soc_pcm_runtime *rtd)
  45 {
  46         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  47         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  48         int ret;
  49
  50         /* set the codec system clock for DAC and ADC */
  51         ret = snd_soc_dai_set_sysclk(codec_dai, 0, 24576000, SND_SOC_CLOCK_IN);
  52         if (ret < 0)
  53                 return ret;
  54
  55         /* set codec DAI slots, 8 channels, all channels are enabled */
  56         ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xFF, 0xFF, 8, 32);
  57         if (ret < 0)
  58                 return ret;
  59
  60         ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0xFF, 0xFF, 8, 32);
  61         if (ret < 0)
  62                 return ret;
  63
  64         return 0;
  65 }
  66
  67 #define BF5XX_AD193X_DAIFMT (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_IF | \
  68                                 SND_SOC_DAIFMT_CBM_CFM)
  69
  70 static struct snd_soc_dai_link bf5xx_ad193x_dai[] = {
  71         {
  72                 .name = "ad193x",
  73                 .stream_name = "AD193X",
  74                 .cpu_dai_name = "bfin-i2s.0",
  75                 .codec_dai_name ="ad193x-hifi",
  76                 .platform_name = "bfin-i2s-pcm-audio",
  77                 .codec_name = "spi0.5",
  78                 .dai_fmt = BF5XX_AD193X_DAIFMT,
  79                 .init = bf5xx_ad193x_link_init,
  80         },
  81         {
  82                 .name = "ad193x",
  83                 .stream_name = "AD193X",
  84                 .cpu_dai_name = "bfin-i2s.1",
  85                 .codec_dai_name ="ad193x-hifi",
  86                 .platform_name = "bfin-i2s-pcm-audio",
  87                 .codec_name = "spi0.5",
  88                 .dai_fmt = BF5XX_AD193X_DAIFMT,
  89                 .init = bf5xx_ad193x_link_init,
  90         },
  91 };
  92
  93 static struct snd_soc_card bf5xx_ad193x = {
  94         .name = "bfin-ad193x",
  95         .owner = THIS_MODULE,
  96         .dai_link = &bf5xx_ad193x_dai[CONFIG_SND_BF5XX_SPORT_NUM],
  97         .num_links = 1,
  98 };
  99
 100 static struct platform_device *bfxx_ad193x_snd_device;
 101
 102 static int __init bf5xx_ad193x_init(void)
 103 {
 104         int ret;
 105
 106         bfxx_ad193x_snd_device = platform_device_alloc("soc-audio", -1);
 107         if (!bfxx_ad193x_snd_device)
 108                 return -ENOMEM;
 109
 110         platform_set_drvdata(bfxx_ad193x_snd_device, &bf5xx_ad193x);
 111         ret = platform_device_add(bfxx_ad193x_snd_device);
 112
 113         if (ret)
 114                 platform_device_put(bfxx_ad193x_snd_device);
 115
 116         return ret;
 117 }
 118
 119 static void __exit bf5xx_ad193x_exit(void)
 120 {
 121         platform_device_unregister(bfxx_ad193x_snd_device);
 122 }
 123
 124 module_init(bf5xx_ad193x_init);
 125 module_exit(bf5xx_ad193x_exit);
 126
 127 /* Module information */
 128 MODULE_AUTHOR("Barry Song");
 129 MODULE_DESCRIPTION("ALSA SoC AD193X board driver");
 130 MODULE_LICENSE("GPL");
 131