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 "../codecs/wm9712.h"
  25 #include "pxa2xx-ac97.h"
  26
  27 static int e800_spk_amp_event(struct snd_soc_dapm_widget *w,
  28                                 struct snd_kcontrol *kcontrol, int event)
  29 {
  30         if (event & SND_SOC_DAPM_PRE_PMU)
  31                 gpio_set_value(GPIO_E800_SPK_AMP_ON, 1);
  32         else if (event & SND_SOC_DAPM_POST_PMD)
  33                 gpio_set_value(GPIO_E800_SPK_AMP_ON, 0);
  34
  35         return 0;
  36 }
  37
  38 static int e800_hp_amp_event(struct snd_soc_dapm_widget *w,
  39                                 struct snd_kcontrol *kcontrol, int event)
  40 {
  41         if (event & SND_SOC_DAPM_PRE_PMU)
  42                 gpio_set_value(GPIO_E800_HP_AMP_OFF, 0);
  43         else if (event & SND_SOC_DAPM_POST_PMD)
  44                 gpio_set_value(GPIO_E800_HP_AMP_OFF, 1);
  45
  46         return 0;
  47 }
  48
  49 static const struct snd_soc_dapm_widget e800_dapm_widgets[] = {
  50         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  51         SND_SOC_DAPM_MIC("Mic (Internal1)", NULL),
  52         SND_SOC_DAPM_MIC("Mic (Internal2)", NULL),
  53         SND_SOC_DAPM_SPK("Speaker", NULL),
  54         SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  55                         e800_hp_amp_event, SND_SOC_DAPM_PRE_PMU |
  56                         SND_SOC_DAPM_POST_PMD),
  57         SND_SOC_DAPM_PGA_E("Speaker Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  58                         e800_spk_amp_event, SND_SOC_DAPM_PRE_PMU |
  59                         SND_SOC_DAPM_POST_PMD),
  60 };
  61
  62 static const struct snd_soc_dapm_route audio_map[] = {
  63         {"Headphone Jack", NULL, "HPOUTL"},
  64         {"Headphone Jack", NULL, "HPOUTR"},
  65         {"Headphone Jack", NULL, "Headphone Amp"},
  66
  67         {"Speaker Amp", NULL, "MONOOUT"},
  68         {"Speaker", NULL, "Speaker Amp"},
  69
  70         {"MIC1", NULL, "Mic (Internal1)"},
  71         {"MIC2", NULL, "Mic (Internal2)"},
  72 };
  73
  74 static int e800_ac97_init(struct snd_soc_pcm_runtime *rtd)
  75 {
  76         struct snd_soc_codec *codec = rtd->codec;
  77         struct snd_soc_dapm_context *dapm = &codec->dapm;
  78
  79         snd_soc_dapm_new_controls(dapm, e800_dapm_widgets,
  80                                         ARRAY_SIZE(e800_dapm_widgets));
  81
  82         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
  83         snd_soc_dapm_sync(dapm);
  84
  85         return 0;
  86 }
  87
  88 static struct snd_soc_dai_link e800_dai[] = {
  89         {
  90                 .name = "AC97",
  91                 .stream_name = "AC97 HiFi",
  92                 .cpu_dai_name = "pxa-ac97.0",
  93                 .codec_dai_name = "wm9712-hifi",
  94                 .platform_name = "pxa-pcm-audio",
  95                 .codec_name = "wm9712-codec",
  96                 .init = e800_ac97_init,
  97         },
  98         {
  99                 .name = "AC97 Aux",
 100                 .stream_name = "AC97 Aux",
 101                 .cpu_dai_name = "pxa-ac97.1",
 102                 .codec_dai_name ="wm9712-aux",
 103                 .platform_name = "pxa-pcm-audio",
 104                 .codec_name = "wm9712-codec",
 105         },
 106 };
 107
 108 static struct snd_soc_card e800 = {
 109         .name = "Toshiba e800",
 110         .dai_link = e800_dai,
 111         .num_links = ARRAY_SIZE(e800_dai),
 112 };
 113
 114 static struct platform_device *e800_snd_device;
 115
 116 static int __init e800_init(void)
 117 {
 118         int ret;
 119
 120         if (!machine_is_e800())
 121                 return -ENODEV;
 122
 123         ret = gpio_request(GPIO_E800_HP_AMP_OFF,  "Headphone amp");
 124         if (ret)
 125                 return ret;
 126
 127         ret = gpio_request(GPIO_E800_SPK_AMP_ON, "Speaker amp");
 128         if (ret)
 129                 goto free_hp_amp_gpio;
 130
 131         ret = gpio_direction_output(GPIO_E800_HP_AMP_OFF, 1);
 132         if (ret)
 133                 goto free_spk_amp_gpio;
 134
 135         ret = gpio_direction_output(GPIO_E800_SPK_AMP_ON, 1);
 136         if (ret)
 137                 goto free_spk_amp_gpio;
 138
 139         e800_snd_device = platform_device_alloc("soc-audio", -1);
 140         if (!e800_snd_device)
 141                 return -ENOMEM;
 142
 143         platform_set_drvdata(e800_snd_device, &e800);
 144         ret = platform_device_add(e800_snd_device);
 145
 146         if (!ret)
 147                 return 0;
 148
 149 /* Fail gracefully */
 150         platform_device_put(e800_snd_device);
 151 free_spk_amp_gpio:
 152         gpio_free(GPIO_E800_SPK_AMP_ON);
 153 free_hp_amp_gpio:
 154         gpio_free(GPIO_E800_HP_AMP_OFF);
 155
 156         return ret;
 157 }
 158
 159 static void __exit e800_exit(void)
 160 {
 161         platform_device_unregister(e800_snd_device);
 162         gpio_free(GPIO_E800_SPK_AMP_ON);
 163         gpio_free(GPIO_E800_HP_AMP_OFF);
 164 }
 165
 166 module_init(e800_init);
 167 module_exit(e800_exit);
 168
 169 /* Module information */
 170 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
 171 MODULE_DESCRIPTION("ALSA SoC driver for e800");
 172 MODULE_LICENSE("GPL v2");