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
   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 #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 int __devinit snappercl15_probe(struct platform_device *pdev)
 109 {
 110         struct snd_soc_card *card = &snd_soc_snappercl15;
 111         int ret;
 112
 113         ret = ep93xx_i2s_acquire(EP93XX_SYSCON_DEVCFG_I2SONAC97,
 114                                  EP93XX_SYSCON_I2SCLKDIV_ORIDE |
 115                                  EP93XX_SYSCON_I2SCLKDIV_SPOL);
 116         if (ret)
 117                 return ret;
 118
 119         card->dev = &pdev->dev;
 120
 121         ret = snd_soc_register_card(card);
 122         if (ret) {
 123                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 124                         ret);
 125                 ep93xx_i2s_release();
 126         }
 127
 128         return ret;
 129 }
 130
 131 static int __devexit snappercl15_remove(struct platform_device *pdev)
 132 {
 133         struct snd_soc_card *card = platform_get_drvdata(pdev);
 134
 135         snd_soc_unregister_card(card);
 136         ep93xx_i2s_release();
 137
 138         return 0;
 139 }
 140
 141 static struct platform_driver snappercl15_driver = {
 142         .driver         = {
 143                 .name   = "snappercl15-audio",
 144                 .owner  = THIS_MODULE,
 145         },
 146         .probe          = snappercl15_probe,
 147         .remove         = __devexit_p(snappercl15_remove),
 148 };
 149
 150 static int __init snappercl15_init(void)
 151 {
 152         return platform_driver_register(&snappercl15_driver);
 153 }
 154
 155 static void __exit snappercl15_exit(void)
 156 {
 157         platform_driver_unregister(&snappercl15_driver);
 158 }
 159
 160 module_init(snappercl15_init);
 161 module_exit(snappercl15_exit);
 162
 163 MODULE_AUTHOR("Ryan Mallon");
 164 MODULE_DESCRIPTION("ALSA SoC Snapper CL15");
 165 MODULE_LICENSE("GPL");
 166 MODULE_ALIAS("platform:snappercl15-audio");