sound/soc/ep93xx/snappercl15.c

   1 /*
   2  * snappercl15.c -- SoC audio for Bluewater Systems Snapper CL15 module
   3  *
   4  * Copyright (C) 2008 Bluewater Systems Ltd
   5  * Author: Ryan Mallon <ryan@bluewatersys.com>
   6  *
   7  *  This program is free software; you can redistribute  it and/or modify it
   8  *  under  the terms of  the GNU General  Public License as published by the
   9  *  Free Software Foundation;  either version 2 of the  License, or (at your
  10  *  option) any later version.
  11  *
  12  */
  13
  14 #include <linux/platform_device.h>
  15 #include <sound/core.h>
  16 #include <sound/pcm.h>
  17 #include <sound/soc.h>
  18 #include <sound/soc-dapm.h>
  19
  20 #include <asm/mach-types.h>
  21 #include <mach/hardware.h>
  22
  23 #include "../codecs/tlv320aic23.h"
  24 #include "ep93xx-pcm.h"
  25
  26 #define CODEC_CLOCK 5644800
  27
  28 static int snappercl15_hw_params(struct snd_pcm_substream *substream,
  29                                  struct snd_pcm_hw_params *params)
  30 {
  31         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  32         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  33         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  34         int err;
  35
  36         err = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
  37                                   SND_SOC_DAIFMT_NB_IF |
  38                                   SND_SOC_DAIFMT_CBS_CFS);
  39
  40         err = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
  41                                   SND_SOC_DAIFMT_NB_IF |
  42                                   SND_SOC_DAIFMT_CBS_CFS);
  43         if (err)
  44                 return err;
  45
  46         err = snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK,
  47                                      SND_SOC_CLOCK_IN);
  48         if (err)
  49                 return err;
  50
  51         err = snd_soc_dai_set_sysclk(cpu_dai, 0, CODEC_CLOCK,
  52                                      SND_SOC_CLOCK_OUT);
  53         if (err)
  54                 return err;
  55
  56         return 0;
  57 }
  58
  59 static struct snd_soc_ops snappercl15_ops = {
  60         .hw_params      = snappercl15_hw_params,
  61 };
  62
  63 static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
  64         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  65         SND_SOC_DAPM_LINE("Line In", NULL),
  66         SND_SOC_DAPM_MIC("Mic Jack", NULL),
  67 };
  68
  69 static const struct snd_soc_dapm_route audio_map[] = {
  70         {"Headphone Jack", NULL, "LHPOUT"},
  71         {"Headphone Jack", NULL, "RHPOUT"},
  72
  73         {"LLINEIN", NULL, "Line In"},
  74         {"RLINEIN", NULL, "Line In"},
  75
  76         {"MICIN", NULL, "Mic Jack"},
  77 };
  78
  79 static int snappercl15_tlv320aic23_init(struct snd_soc_pcm_runtime *rtd)
  80 {
  81         struct snd_soc_codec *codec = rtd->codec;
  82         struct snd_soc_dapm_context *dapm = &codec->dapm;
  83
  84         snd_soc_dapm_new_controls(dapm, tlv320aic23_dapm_widgets,
  85                                   ARRAY_SIZE(tlv320aic23_dapm_widgets));
  86
  87         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
  88         return 0;
  89 }
  90
  91 static struct snd_soc_dai_link snappercl15_dai = {
  92         .name           = "tlv320aic23",
  93         .stream_name    = "AIC23",
  94         .cpu_dai_name   = "ep93xx-i2s",
  95         .codec_dai_name = "tlv320aic23-hifi",
  96         .codec_name     = "tlv320aic23-codec.0-001a",
  97         .platform_name  =  "ep93xx-pcm-audio",
  98         .init           = snappercl15_tlv320aic23_init,
  99         .ops            = &snappercl15_ops,
 100 };
 101
 102 static struct snd_soc_card snd_soc_snappercl15 = {
 103         .name           = "Snapper CL15",
 104         .dai_link       = &snappercl15_dai,
 105         .num_links      = 1,
 106 };
 107
 108 static struct platform_device *snappercl15_snd_device;
 109
 110 static int __init snappercl15_init(void)
 111 {
 112         int ret;
 113
 114         if (!machine_is_snapper_cl15())
 115                 return -ENODEV;
 116
 117         ret = ep93xx_i2s_acquire(EP93XX_SYSCON_DEVCFG_I2SONAC97,
 118                                  EP93XX_SYSCON_I2SCLKDIV_ORIDE |
 119                                  EP93XX_SYSCON_I2SCLKDIV_SPOL);
 120         if (ret)
 121                 return ret;
 122
 123         snappercl15_snd_device = platform_device_alloc("soc-audio", -1);
 124         if (!snappercl15_snd_device)
 125                 return -ENOMEM;
 126
 127         platform_set_drvdata(snappercl15_snd_device, &snd_soc_snappercl15);
 128         ret = platform_device_add(snappercl15_snd_device);
 129         if (ret)
 130                 platform_device_put(snappercl15_snd_device);
 131
 132         return ret;
 133 }
 134
 135 static void __exit snappercl15_exit(void)
 136 {
 137         platform_device_unregister(snappercl15_snd_device);
 138         ep93xx_i2s_release();
 139 }
 140
 141 module_init(snappercl15_init);
 142 module_exit(snappercl15_exit);
 143
 144 MODULE_AUTHOR("Ryan Mallon <ryan@bluewatersys.com>");
 145 MODULE_DESCRIPTION("ALSA SoC Snapper CL15");
 146 MODULE_LICENSE("GPL");
 147