sound/soc/pxa/e750_wm9705.c

   1 /*
   2  * e750-wm9705.c  --  SoC audio for e750
   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 <mach/audio.h>
  21 #include <mach/eseries-gpio.h>
  22
  23 #include <asm/mach-types.h>
  24
  25 static int e750_spk_amp_event(struct snd_soc_dapm_widget *w,
  26                                 struct snd_kcontrol *kcontrol, int event)
  27 {
  28         if (event & SND_SOC_DAPM_PRE_PMU)
  29                 gpio_set_value(GPIO_E750_SPK_AMP_OFF, 0);
  30         else if (event & SND_SOC_DAPM_POST_PMD)
  31                 gpio_set_value(GPIO_E750_SPK_AMP_OFF, 1);
  32
  33         return 0;
  34 }
  35
  36 static int e750_hp_amp_event(struct snd_soc_dapm_widget *w,
  37                                 struct snd_kcontrol *kcontrol, int event)
  38 {
  39         if (event & SND_SOC_DAPM_PRE_PMU)
  40                 gpio_set_value(GPIO_E750_HP_AMP_OFF, 0);
  41         else if (event & SND_SOC_DAPM_POST_PMD)
  42                 gpio_set_value(GPIO_E750_HP_AMP_OFF, 1);
  43
  44         return 0;
  45 }
  46
  47 static const struct snd_soc_dapm_widget e750_dapm_widgets[] = {
  48         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  49         SND_SOC_DAPM_SPK("Speaker", NULL),
  50         SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
  51         SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  52                         e750_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                         e750_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 Amp", NULL, "HPOUTL"},
  61         {"Headphone Amp", NULL, "HPOUTR"},
  62         {"Headphone Jack", NULL, "Headphone Amp"},
  63
  64         {"Speaker Amp", NULL, "MONOOUT"},
  65         {"Speaker", NULL, "Speaker Amp"},
  66
  67         {"MIC1", NULL, "Mic (Internal)"},
  68 };
  69
  70 static struct snd_soc_dai_link e750_dai[] = {
  71         {
  72                 .name = "AC97",
  73                 .stream_name = "AC97 HiFi",
  74                 .cpu_dai_name = "pxa2xx-ac97",
  75                 .codec_dai_name = "wm9705-hifi",
  76                 .platform_name = "pxa-pcm-audio",
  77                 .codec_name = "wm9705-codec",
  78                 /* use ops to check startup state */
  79         },
  80         {
  81                 .name = "AC97 Aux",
  82                 .stream_name = "AC97 Aux",
  83                 .cpu_dai_name = "pxa2xx-ac97-aux",
  84                 .codec_dai_name = "wm9705-aux",
  85                 .platform_name = "pxa-pcm-audio",
  86                 .codec_name = "wm9705-codec",
  87         },
  88 };
  89
  90 static struct snd_soc_card e750 = {
  91         .name = "Toshiba e750",
  92         .owner = THIS_MODULE,
  93         .dai_link = e750_dai,
  94         .num_links = ARRAY_SIZE(e750_dai),
  95
  96         .dapm_widgets = e750_dapm_widgets,
  97         .num_dapm_widgets = ARRAY_SIZE(e750_dapm_widgets),
  98         .dapm_routes = audio_map,
  99         .num_dapm_routes = ARRAY_SIZE(audio_map),
 100         .fully_routed = true,
 101 };
 102
 103 static struct gpio e750_audio_gpios[] = {
 104         { GPIO_E750_HP_AMP_OFF, GPIOF_OUT_INIT_HIGH, "Headphone amp" },
 105         { GPIO_E750_SPK_AMP_OFF, GPIOF_OUT_INIT_HIGH, "Speaker amp" },
 106 };
 107
 108 static int e750_probe(struct platform_device *pdev)
 109 {
 110         struct snd_soc_card *card = &e750;
 111         int ret;
 112
 113         ret = gpio_request_array(e750_audio_gpios,
 114                                  ARRAY_SIZE(e750_audio_gpios));
 115         if (ret)
 116                 return ret;
 117
 118         card->dev = &pdev->dev;
 119
 120         ret = devm_snd_soc_register_card(&pdev->dev, card);
 121         if (ret) {
 122                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 123                         ret);
 124                 gpio_free_array(e750_audio_gpios, ARRAY_SIZE(e750_audio_gpios));
 125         }
 126         return ret;
 127 }
 128
 129 static int e750_remove(struct platform_device *pdev)
 130 {
 131         gpio_free_array(e750_audio_gpios, ARRAY_SIZE(e750_audio_gpios));
 132         return 0;
 133 }
 134
 135 static struct platform_driver e750_driver = {
 136         .driver         = {
 137                 .name   = "e750-audio",
 138                 .pm     = &snd_soc_pm_ops,
 139         },
 140         .probe          = e750_probe,
 141         .remove         = e750_remove,
 142 };
 143
 144 module_platform_driver(e750_driver);
 145
 146 /* Module information */
 147 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
 148 MODULE_DESCRIPTION("ALSA SoC driver for e750");
 149 MODULE_LICENSE("GPL v2");
 150 MODULE_ALIAS("platform:e750-audio");