LXR linux/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
  42static struct snd_soc_card bf5xx_ad193x;
  43
  44static 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
  70static 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
  93static 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
 100static struct platform_device *bfxx_ad193x_snd_device;
 101
 102static 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
 119static void __exit bf5xx_ad193x_exit(void)
 120{
 121        platform_device_unregister(bfxx_ad193x_snd_device);
 122}
 123
 124module_init(bf5xx_ad193x_init);
 125module_exit(bf5xx_ad193x_exit);
 126
 127/* Module information */
 128MODULE_AUTHOR("Barry Song");
 129MODULE_DESCRIPTION("ALSA SoC AD193X board driver");
 130MODULE_LICENSE("GPL");
 131
 132