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