sound/soc/blackfin/bf5xx-ssm2602.c

   1 /*
   2  * File:         sound/soc/blackfin/bf5xx-ssm2602.c
   3  * Author:       Cliff Cai <Cliff.Cai@analog.com>
   4  *
   5  * Created:      Tue June 06 2008
   6  * Description:  board driver for SSM2602 sound chip
   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
  33 #include <sound/core.h>
  34 #include <sound/pcm.h>
  35 #include <sound/soc.h>
  36 #include <sound/pcm_params.h>
  37
  38 #include <asm/dma.h>
  39 #include <asm/portmux.h>
  40 #include <linux/gpio.h>
  41 #include "../codecs/ssm2602.h"
  42 #include "bf5xx-sport.h"
  43 #include "bf5xx-i2s-pcm.h"
  44
  45 static struct snd_soc_card bf5xx_ssm2602;
  46
  47 static int bf5xx_ssm2602_dai_init(struct snd_soc_pcm_runtime *rtd)
  48 {
  49         /*
  50          * If you are using a crystal source which frequency is not 12MHz
  51          * then modify the below case statement with frequency of the crystal.
  52          *
  53          * If you are using the SPORT to generate clocking then this is
  54          * where to do it.
  55          */
  56         return snd_soc_dai_set_sysclk(rtd->codec_dai, SSM2602_SYSCLK, 12000000,
  57                 SND_SOC_CLOCK_IN);
  58 }
  59
  60 /* CODEC is master for BCLK and LRC in this configuration. */
  61 #define BF5XX_SSM2602_DAIFMT (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | \
  62                                 SND_SOC_DAIFMT_CBM_CFM)
  63
  64 static struct snd_soc_dai_link bf5xx_ssm2602_dai[] = {
  65         {
  66                 .name = "ssm2602",
  67                 .stream_name = "SSM2602",
  68                 .cpu_dai_name = "bfin-i2s.0",
  69                 .codec_dai_name = "ssm2602-hifi",
  70                 .platform_name = "bfin-i2s-pcm-audio",
  71                 .codec_name = "ssm2602.0-001b",
  72                 .init = bf5xx_ssm2602_dai_init,
  73                 .dai_fmt = BF5XX_SSM2602_DAIFMT,
  74         },
  75         {
  76                 .name = "ssm2602",
  77                 .stream_name = "SSM2602",
  78                 .cpu_dai_name = "bfin-i2s.1",
  79                 .codec_dai_name = "ssm2602-hifi",
  80                 .platform_name = "bfin-i2s-pcm-audio",
  81                 .codec_name = "ssm2602.0-001b",
  82                 .init = bf5xx_ssm2602_dai_init,
  83                 .dai_fmt = BF5XX_SSM2602_DAIFMT,
  84         },
  85 };
  86
  87 static struct snd_soc_card bf5xx_ssm2602 = {
  88         .name = "bfin-ssm2602",
  89         .owner = THIS_MODULE,
  90         .dai_link = &bf5xx_ssm2602_dai[CONFIG_SND_BF5XX_SPORT_NUM],
  91         .num_links = 1,
  92 };
  93
  94 static struct platform_device *bf5xx_ssm2602_snd_device;
  95
  96 static int __init bf5xx_ssm2602_init(void)
  97 {
  98         int ret;
  99
 100         pr_debug("%s enter\n", __func__);
 101         bf5xx_ssm2602_snd_device = platform_device_alloc("soc-audio", -1);
 102         if (!bf5xx_ssm2602_snd_device)
 103                 return -ENOMEM;
 104
 105         platform_set_drvdata(bf5xx_ssm2602_snd_device, &bf5xx_ssm2602);
 106         ret = platform_device_add(bf5xx_ssm2602_snd_device);
 107
 108         if (ret)
 109                 platform_device_put(bf5xx_ssm2602_snd_device);
 110
 111         return ret;
 112 }
 113
 114 static void __exit bf5xx_ssm2602_exit(void)
 115 {
 116         pr_debug("%s enter\n", __func__);
 117         platform_device_unregister(bf5xx_ssm2602_snd_device);
 118 }
 119
 120 module_init(bf5xx_ssm2602_init);
 121 module_exit(bf5xx_ssm2602_exit);
 122
 123 /* Module information */
 124 MODULE_AUTHOR("Cliff Cai");
 125 MODULE_DESCRIPTION("ALSA SoC SSM2602 BF527-EZKIT");
 126 MODULE_LICENSE("GPL");
 127