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