kernel/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 struct snd_soc_dai_link snappercl15_dai = {
  69         .name           = "tlv320aic23",
  70         .stream_name    = "AIC23",
  71         .cpu_dai_name   = "ep93xx-i2s",
  72         .codec_dai_name = "tlv320aic23-hifi",
  73         .codec_name     = "tlv320aic23-codec.0-001a",
  74         .platform_name  = "ep93xx-i2s",
  75         .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_IF |
  76                           SND_SOC_DAIFMT_CBS_CFS,
  77         .ops            = &snappercl15_ops,
  78 };
  79
  80 static struct snd_soc_card snd_soc_snappercl15 = {
  81         .name           = "Snapper CL15",
  82         .owner          = THIS_MODULE,
  83         .dai_link       = &snappercl15_dai,
  84         .num_links      = 1,
  85
  86         .dapm_widgets           = tlv320aic23_dapm_widgets,
  87         .num_dapm_widgets       = ARRAY_SIZE(tlv320aic23_dapm_widgets),
  88         .dapm_routes            = audio_map,
  89         .num_dapm_routes        = ARRAY_SIZE(audio_map),
  90 };
  91
  92 static int snappercl15_probe(struct platform_device *pdev)
  93 {
  94         struct snd_soc_card *card = &snd_soc_snappercl15;
  95         int ret;
  96
  97         ret = ep93xx_i2s_acquire();
  98         if (ret)
  99                 return ret;
 100
 101         card->dev = &pdev->dev;
 102
 103         ret = snd_soc_register_card(card);
 104         if (ret) {
 105                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 106                         ret);
 107                 ep93xx_i2s_release();
 108         }
 109
 110         return ret;
 111 }
 112
 113 static int snappercl15_remove(struct platform_device *pdev)
 114 {
 115         struct snd_soc_card *card = platform_get_drvdata(pdev);
 116
 117         snd_soc_unregister_card(card);
 118         ep93xx_i2s_release();
 119
 120         return 0;
 121 }
 122
 123 static struct platform_driver snappercl15_driver = {
 124         .driver         = {
 125                 .name   = "snappercl15-audio",
 126         },
 127         .probe          = snappercl15_probe,
 128         .remove         = snappercl15_remove,
 129 };
 130
 131 module_platform_driver(snappercl15_driver);
 132
 133 MODULE_AUTHOR("Ryan Mallon");
 134 MODULE_DESCRIPTION("ALSA SoC Snapper CL15");
 135 MODULE_LICENSE("GPL");
 136 MODULE_ALIAS("platform:snappercl15-audio");