sound/soc/pxa/e800_wm9712.c

   1 /*
   2  * e800-wm9712.c  --  SoC audio for e800
   3  *
   4  * Copyright 2007 (c) Ian Molton <spyro@f2s.com>
   5  *
   6  *  This program is free software; you can redistribute  it and/or modify it
   7  *  under  the terms of  the GNU General  Public License as published by the
   8  *  Free Software Foundation; version 2 ONLY.
   9  *
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/gpio.h>
  15
  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/audio.h>
  22 #include <mach/eseries-gpio.h>
  23
  24 static int e800_spk_amp_event(struct snd_soc_dapm_widget *w,
  25                                 struct snd_kcontrol *kcontrol, int event)
  26 {
  27         if (event & SND_SOC_DAPM_PRE_PMU)
  28                 gpio_set_value(GPIO_E800_SPK_AMP_ON, 1);
  29         else if (event & SND_SOC_DAPM_POST_PMD)
  30                 gpio_set_value(GPIO_E800_SPK_AMP_ON, 0);
  31
  32         return 0;
  33 }
  34
  35 static int e800_hp_amp_event(struct snd_soc_dapm_widget *w,
  36                                 struct snd_kcontrol *kcontrol, int event)
  37 {
  38         if (event & SND_SOC_DAPM_PRE_PMU)
  39                 gpio_set_value(GPIO_E800_HP_AMP_OFF, 0);
  40         else if (event & SND_SOC_DAPM_POST_PMD)
  41                 gpio_set_value(GPIO_E800_HP_AMP_OFF, 1);
  42
  43         return 0;
  44 }
  45
  46 static const struct snd_soc_dapm_widget e800_dapm_widgets[] = {
  47         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  48         SND_SOC_DAPM_MIC("Mic (Internal1)", NULL),
  49         SND_SOC_DAPM_MIC("Mic (Internal2)", NULL),
  50         SND_SOC_DAPM_SPK("Speaker", NULL),
  51         SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  52                         e800_hp_amp_event, SND_SOC_DAPM_PRE_PMU |
  53                         SND_SOC_DAPM_POST_PMD),
  54         SND_SOC_DAPM_PGA_E("Speaker Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  55                         e800_spk_amp_event, SND_SOC_DAPM_PRE_PMU |
  56                         SND_SOC_DAPM_POST_PMD),
  57 };
  58
  59 static const struct snd_soc_dapm_route audio_map[] = {
  60         {"Headphone Jack", NULL, "HPOUTL"},
  61         {"Headphone Jack", NULL, "HPOUTR"},
  62         {"Headphone Jack", NULL, "Headphone Amp"},
  63
  64         {"Speaker Amp", NULL, "MONOOUT"},
  65         {"Speaker", NULL, "Speaker Amp"},
  66
  67         {"MIC1", NULL, "Mic (Internal1)"},
  68         {"MIC2", NULL, "Mic (Internal2)"},
  69 };
  70
  71 static struct snd_soc_dai_link e800_dai[] = {
  72         {
  73                 .name = "AC97",
  74                 .stream_name = "AC97 HiFi",
  75                 .cpu_dai_name = "pxa2xx-ac97",
  76                 .codec_dai_name = "wm9712-hifi",
  77                 .platform_name = "pxa-pcm-audio",
  78                 .codec_name = "wm9712-codec",
  79         },
  80         {
  81                 .name = "AC97 Aux",
  82                 .stream_name = "AC97 Aux",
  83                 .cpu_dai_name = "pxa2xx-ac97-aux",
  84                 .codec_dai_name = "wm9712-aux",
  85                 .platform_name = "pxa-pcm-audio",
  86                 .codec_name = "wm9712-codec",
  87         },
  88 };
  89
  90 static struct snd_soc_card e800 = {
  91         .name = "Toshiba e800",
  92         .owner = THIS_MODULE,
  93         .dai_link = e800_dai,
  94         .num_links = ARRAY_SIZE(e800_dai),
  95
  96         .dapm_widgets = e800_dapm_widgets,
  97         .num_dapm_widgets = ARRAY_SIZE(e800_dapm_widgets),
  98         .dapm_routes = audio_map,
  99         .num_dapm_routes = ARRAY_SIZE(audio_map),
 100 };
 101
 102 static struct gpio e800_audio_gpios[] = {
 103         { GPIO_E800_SPK_AMP_ON, GPIOF_OUT_INIT_HIGH, "Headphone amp" },
 104         { GPIO_E800_HP_AMP_OFF, GPIOF_OUT_INIT_HIGH, "Speaker amp" },
 105 };
 106
 107 static int e800_probe(struct platform_device *pdev)
 108 {
 109         struct snd_soc_card *card = &e800;
 110         int ret;
 111
 112         ret = gpio_request_array(e800_audio_gpios,
 113                                  ARRAY_SIZE(e800_audio_gpios));
 114         if (ret)
 115                 return ret;
 116
 117         card->dev = &pdev->dev;
 118
 119         ret = devm_snd_soc_register_card(&pdev->dev, card);
 120         if (ret) {
 121                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 122                         ret);
 123                 gpio_free_array(e800_audio_gpios, ARRAY_SIZE(e800_audio_gpios));
 124         }
 125         return ret;
 126 }
 127
 128 static int e800_remove(struct platform_device *pdev)
 129 {
 130         gpio_free_array(e800_audio_gpios, ARRAY_SIZE(e800_audio_gpios));
 131         return 0;
 132 }
 133
 134 static struct platform_driver e800_driver = {
 135         .driver         = {
 136                 .name   = "e800-audio",
 137                 .pm     = &snd_soc_pm_ops,
 138         },
 139         .probe          = e800_probe,
 140         .remove         = e800_remove,
 141 };
 142
 143 module_platform_driver(e800_driver);
 144
 145 /* Module information */
 146 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
 147 MODULE_DESCRIPTION("ALSA SoC driver for e800");
 148 MODULE_LICENSE("GPL v2");
 149 MODULE_ALIAS("platform:e800-audio");