sound/soc/cirrus/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
   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 <linux/module.h>
  16 #include <sound/core.h>
  17 #include <sound/pcm.h>
  18 #include <sound/soc.h>
  19
  20 #include <asm/mach-types.h>
  21 #include <mach/hardware.h>
  22
  23 #include "../codecs/tlv320aic23.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_sysclk(codec_dai, 0, CODEC_CLOCK,
  36                                      SND_SOC_CLOCK_IN);
  37         if (err)
  38                 return err;
  39
  40         err = snd_soc_dai_set_sysclk(cpu_dai, 0, CODEC_CLOCK,
  41                                      SND_SOC_CLOCK_OUT);
  42         if (err)
  43                 return err;
  44
  45         return 0;
  46 }
  47
  48 static struct snd_soc_ops snappercl15_ops = {
  49         .hw_params      = snappercl15_hw_params,
  50 };
  51
  52 static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
  53         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  54         SND_SOC_DAPM_LINE("Line In", NULL),
  55         SND_SOC_DAPM_MIC("Mic Jack", NULL),
  56 };
  57
  58 static const struct snd_soc_dapm_route audio_map[] = {
  59         {"Headphone Jack", NULL, "LHPOUT"},
  60         {"Headphone Jack", NULL, "RHPOUT"},
  61
  62         {"LLINEIN", NULL, "Line In"},
  63         {"RLINEIN", NULL, "Line In"},
  64
  65         {"MICIN", NULL, "Mic Jack"},
  66 };
  67
  68 static int snappercl15_tlv320aic23_init(struct snd_soc_pcm_runtime *rtd)
  69 {
  70         struct snd_soc_codec *codec = rtd->codec;
  71         struct snd_soc_dapm_context *dapm = &codec->dapm;
  72
  73         snd_soc_dapm_new_controls(dapm, tlv320aic23_dapm_widgets,
  74                                   ARRAY_SIZE(tlv320aic23_dapm_widgets));
  75
  76         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
  77         return 0;
  78 }
  79
  80 static struct snd_soc_dai_link snappercl15_dai = {
  81         .name           = "tlv320aic23",
  82         .stream_name    = "AIC23",
  83         .cpu_dai_name   = "ep93xx-i2s",
  84         .codec_dai_name = "tlv320aic23-hifi",
  85         .codec_name     = "tlv320aic23-codec.0-001a",
  86         .platform_name  =  "ep93xx-pcm-audio",
  87         .init           = snappercl15_tlv320aic23_init,
  88         .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_IF |
  89                           SND_SOC_DAIFMT_CBS_CFS,
  90         .ops            = &snappercl15_ops,
  91 };
  92
  93 static struct snd_soc_card snd_soc_snappercl15 = {
  94         .name           = "Snapper CL15",
  95         .owner          = THIS_MODULE,
  96         .dai_link       = &snappercl15_dai,
  97         .num_links      = 1,
  98 };
  99
 100 static int snappercl15_probe(struct platform_device *pdev)
 101 {
 102         struct snd_soc_card *card = &snd_soc_snappercl15;
 103         int ret;
 104
 105         ret = ep93xx_i2s_acquire();
 106         if (ret)
 107                 return ret;
 108
 109         card->dev = &pdev->dev;
 110
 111         ret = snd_soc_register_card(card);
 112         if (ret) {
 113                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 114                         ret);
 115                 ep93xx_i2s_release();
 116         }
 117
 118         return ret;
 119 }
 120
 121 static int snappercl15_remove(struct platform_device *pdev)
 122 {
 123         struct snd_soc_card *card = platform_get_drvdata(pdev);
 124
 125         snd_soc_unregister_card(card);
 126         ep93xx_i2s_release();
 127
 128         return 0;
 129 }
 130
 131 static struct platform_driver snappercl15_driver = {
 132         .driver         = {
 133                 .name   = "snappercl15-audio",
 134                 .owner  = THIS_MODULE,
 135         },
 136         .probe          = snappercl15_probe,
 137         .remove         = snappercl15_remove,
 138 };
 139
 140 module_platform_driver(snappercl15_driver);
 141
 142 MODULE_AUTHOR("Ryan Mallon");
 143 MODULE_DESCRIPTION("ALSA SoC Snapper CL15");
 144 MODULE_LICENSE("GPL");
 145 MODULE_ALIAS("platform:snappercl15-audio");