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