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 #include <sound/soc-dapm.h>
  20
  21 #include <asm/mach-types.h>
  22 #include <mach/audio.h>
  23 #include <mach/eseries-gpio.h>
  24
  25 #include "../codecs/wm9712.h"
  26 #include "pxa2xx-pcm.h"
  27 #include "pxa2xx-ac97.h"
  28
  29 static int e800_spk_amp_event(struct snd_soc_dapm_widget *w,
  30                                 struct snd_kcontrol *kcontrol, int event)
  31 {
  32         if (event & SND_SOC_DAPM_PRE_PMU)
  33                 gpio_set_value(GPIO_E800_SPK_AMP_ON, 1);
  34         else if (event & SND_SOC_DAPM_POST_PMD)
  35                 gpio_set_value(GPIO_E800_SPK_AMP_ON, 0);
  36
  37         return 0;
  38 }
  39
  40 static int e800_hp_amp_event(struct snd_soc_dapm_widget *w,
  41                                 struct snd_kcontrol *kcontrol, int event)
  42 {
  43         if (event & SND_SOC_DAPM_PRE_PMU)
  44                 gpio_set_value(GPIO_E800_HP_AMP_OFF, 0);
  45         else if (event & SND_SOC_DAPM_POST_PMD)
  46                 gpio_set_value(GPIO_E800_HP_AMP_OFF, 1);
  47
  48         return 0;
  49 }
  50
  51 static const struct snd_soc_dapm_widget e800_dapm_widgets[] = {
  52         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  53         SND_SOC_DAPM_MIC("Mic (Internal1)", NULL),
  54         SND_SOC_DAPM_MIC("Mic (Internal2)", NULL),
  55         SND_SOC_DAPM_SPK("Speaker", NULL),
  56         SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  57                         e800_hp_amp_event, SND_SOC_DAPM_PRE_PMU |
  58                         SND_SOC_DAPM_POST_PMD),
  59         SND_SOC_DAPM_PGA_E("Speaker Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  60                         e800_spk_amp_event, SND_SOC_DAPM_PRE_PMU |
  61                         SND_SOC_DAPM_POST_PMD),
  62 };
  63
  64 static const struct snd_soc_dapm_route audio_map[] = {
  65         {"Headphone Jack", NULL, "HPOUTL"},
  66         {"Headphone Jack", NULL, "HPOUTR"},
  67         {"Headphone Jack", NULL, "Headphone Amp"},
  68
  69         {"Speaker Amp", NULL, "MONOOUT"},
  70         {"Speaker", NULL, "Speaker Amp"},
  71
  72         {"MIC1", NULL, "Mic (Internal1)"},
  73         {"MIC2", NULL, "Mic (Internal2)"},
  74 };
  75
  76 static int e800_ac97_init(struct snd_soc_codec *codec)
  77 {
  78         snd_soc_dapm_new_controls(codec, e800_dapm_widgets,
  79                                         ARRAY_SIZE(e800_dapm_widgets));
  80
  81         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
  82         snd_soc_dapm_sync(codec);
  83
  84         return 0;
  85 }
  86
  87 static struct snd_soc_dai_link e800_dai[] = {
  88         {
  89                 .name = "AC97",
  90                 .stream_name = "AC97 HiFi",
  91                 .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
  92                 .codec_dai = &wm9712_dai[WM9712_DAI_AC97_HIFI],
  93                 .init = e800_ac97_init,
  94         },
  95         {
  96                 .name = "AC97 Aux",
  97                 .stream_name = "AC97 Aux",
  98                 .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
  99                 .codec_dai = &wm9712_dai[WM9712_DAI_AC97_AUX],
 100         },
 101 };
 102
 103 static struct snd_soc_card e800 = {
 104         .name = "Toshiba e800",
 105         .platform = &pxa2xx_soc_platform,
 106         .dai_link = e800_dai,
 107         .num_links = ARRAY_SIZE(e800_dai),
 108 };
 109
 110 static struct snd_soc_device e800_snd_devdata = {
 111         .card = &e800,
 112         .codec_dev = &soc_codec_dev_wm9712,
 113 };
 114
 115 static struct platform_device *e800_snd_device;
 116
 117 static int __init e800_init(void)
 118 {
 119         int ret;
 120
 121         if (!machine_is_e800())
 122                 return -ENODEV;
 123
 124         ret = gpio_request(GPIO_E800_HP_AMP_OFF,  "Headphone amp");
 125         if (ret)
 126                 return ret;
 127
 128         ret = gpio_request(GPIO_E800_SPK_AMP_ON, "Speaker amp");
 129         if (ret)
 130                 goto free_hp_amp_gpio;
 131
 132         ret = gpio_direction_output(GPIO_E800_HP_AMP_OFF, 1);
 133         if (ret)
 134                 goto free_spk_amp_gpio;
 135
 136         ret = gpio_direction_output(GPIO_E800_SPK_AMP_ON, 1);
 137         if (ret)
 138                 goto free_spk_amp_gpio;
 139
 140         e800_snd_device = platform_device_alloc("soc-audio", -1);
 141         if (!e800_snd_device)
 142                 return -ENOMEM;
 143
 144         platform_set_drvdata(e800_snd_device, &e800_snd_devdata);
 145         e800_snd_devdata.dev = &e800_snd_device->dev;
 146         ret = platform_device_add(e800_snd_device);
 147
 148         if (!ret)
 149                 return 0;
 150
 151 /* Fail gracefully */
 152         platform_device_put(e800_snd_device);
 153 free_spk_amp_gpio:
 154         gpio_free(GPIO_E800_SPK_AMP_ON);
 155 free_hp_amp_gpio:
 156         gpio_free(GPIO_E800_HP_AMP_OFF);
 157
 158         return ret;
 159 }
 160
 161 static void __exit e800_exit(void)
 162 {
 163         platform_device_unregister(e800_snd_device);
 164         gpio_free(GPIO_E800_SPK_AMP_ON);
 165         gpio_free(GPIO_E800_HP_AMP_OFF);
 166 }
 167
 168 module_init(e800_init);
 169 module_exit(e800_exit);
 170
 171 /* Module information */
 172 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
 173 MODULE_DESCRIPTION("ALSA SoC driver for e800");
 174 MODULE_LICENSE("GPL v2");