release/src-rt-6.x.4708/linux/linux-2.6.36/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 #include <sound/soc-dapm.h>
  20
  21 #include <mach/audio.h>
  22 #include <mach/eseries-gpio.h>
  23
  24 #include <asm/mach-types.h>
  25
  26 #include "../codecs/wm9705.h"
  27 #include "pxa2xx-pcm.h"
  28 #include "pxa2xx-ac97.h"
  29
  30 static int e750_spk_amp_event(struct snd_soc_dapm_widget *w,
  31                                 struct snd_kcontrol *kcontrol, int event)
  32 {
  33         if (event & SND_SOC_DAPM_PRE_PMU)
  34                 gpio_set_value(GPIO_E750_SPK_AMP_OFF, 0);
  35         else if (event & SND_SOC_DAPM_POST_PMD)
  36                 gpio_set_value(GPIO_E750_SPK_AMP_OFF, 1);
  37
  38         return 0;
  39 }
  40
  41 static int e750_hp_amp_event(struct snd_soc_dapm_widget *w,
  42                                 struct snd_kcontrol *kcontrol, int event)
  43 {
  44         if (event & SND_SOC_DAPM_PRE_PMU)
  45                 gpio_set_value(GPIO_E750_HP_AMP_OFF, 0);
  46         else if (event & SND_SOC_DAPM_POST_PMD)
  47                 gpio_set_value(GPIO_E750_HP_AMP_OFF, 1);
  48
  49         return 0;
  50 }
  51
  52 static const struct snd_soc_dapm_widget e750_dapm_widgets[] = {
  53         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  54         SND_SOC_DAPM_SPK("Speaker", NULL),
  55         SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
  56         SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  57                         e750_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                         e750_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 Amp", NULL, "HPOUTL"},
  66         {"Headphone Amp", NULL, "HPOUTR"},
  67         {"Headphone Jack", NULL, "Headphone Amp"},
  68
  69         {"Speaker Amp", NULL, "MONOOUT"},
  70         {"Speaker", NULL, "Speaker Amp"},
  71
  72         {"MIC1", NULL, "Mic (Internal)"},
  73 };
  74
  75 static int e750_ac97_init(struct snd_soc_codec *codec)
  76 {
  77         snd_soc_dapm_nc_pin(codec, "LOUT");
  78         snd_soc_dapm_nc_pin(codec, "ROUT");
  79         snd_soc_dapm_nc_pin(codec, "PHONE");
  80         snd_soc_dapm_nc_pin(codec, "LINEINL");
  81         snd_soc_dapm_nc_pin(codec, "LINEINR");
  82         snd_soc_dapm_nc_pin(codec, "CDINL");
  83         snd_soc_dapm_nc_pin(codec, "CDINR");
  84         snd_soc_dapm_nc_pin(codec, "PCBEEP");
  85         snd_soc_dapm_nc_pin(codec, "MIC2");
  86
  87         snd_soc_dapm_new_controls(codec, e750_dapm_widgets,
  88                                         ARRAY_SIZE(e750_dapm_widgets));
  89
  90         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
  91
  92         snd_soc_dapm_sync(codec);
  93
  94         return 0;
  95 }
  96
  97 static struct snd_soc_dai_link e750_dai[] = {
  98         {
  99                 .name = "AC97",
 100                 .stream_name = "AC97 HiFi",
 101                 .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
 102                 .codec_dai = &wm9705_dai[WM9705_DAI_AC97_HIFI],
 103                 .init = e750_ac97_init,
 104                 /* use ops to check startup state */
 105         },
 106         {
 107                 .name = "AC97 Aux",
 108                 .stream_name = "AC97 Aux",
 109                 .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
 110                 .codec_dai = &wm9705_dai[WM9705_DAI_AC97_AUX],
 111         },
 112 };
 113
 114 static struct snd_soc_card e750 = {
 115         .name = "Toshiba e750",
 116         .platform = &pxa2xx_soc_platform,
 117         .dai_link = e750_dai,
 118         .num_links = ARRAY_SIZE(e750_dai),
 119 };
 120
 121 static struct snd_soc_device e750_snd_devdata = {
 122         .card = &e750,
 123         .codec_dev = &soc_codec_dev_wm9705,
 124 };
 125
 126 static struct platform_device *e750_snd_device;
 127
 128 static int __init e750_init(void)
 129 {
 130         int ret;
 131
 132         if (!machine_is_e750())
 133                 return -ENODEV;
 134
 135         ret = gpio_request(GPIO_E750_HP_AMP_OFF,  "Headphone amp");
 136         if (ret)
 137                 return ret;
 138
 139         ret = gpio_request(GPIO_E750_SPK_AMP_OFF, "Speaker amp");
 140         if (ret)
 141                 goto free_hp_amp_gpio;
 142
 143         ret = gpio_direction_output(GPIO_E750_HP_AMP_OFF, 1);
 144         if (ret)
 145                 goto free_spk_amp_gpio;
 146
 147         ret = gpio_direction_output(GPIO_E750_SPK_AMP_OFF, 1);
 148         if (ret)
 149                 goto free_spk_amp_gpio;
 150
 151         e750_snd_device = platform_device_alloc("soc-audio", -1);
 152         if (!e750_snd_device) {
 153                 ret = -ENOMEM;
 154                 goto free_spk_amp_gpio;
 155         }
 156
 157         platform_set_drvdata(e750_snd_device, &e750_snd_devdata);
 158         e750_snd_devdata.dev = &e750_snd_device->dev;
 159         ret = platform_device_add(e750_snd_device);
 160
 161         if (!ret)
 162                 return 0;
 163
 164 /* Fail gracefully */
 165         platform_device_put(e750_snd_device);
 166 free_spk_amp_gpio:
 167         gpio_free(GPIO_E750_SPK_AMP_OFF);
 168 free_hp_amp_gpio:
 169         gpio_free(GPIO_E750_HP_AMP_OFF);
 170
 171         return ret;
 172 }
 173
 174 static void __exit e750_exit(void)
 175 {
 176         platform_device_unregister(e750_snd_device);
 177         gpio_free(GPIO_E750_SPK_AMP_OFF);
 178         gpio_free(GPIO_E750_HP_AMP_OFF);
 179 }
 180
 181 module_init(e750_init);
 182 module_exit(e750_exit);
 183
 184 /* Module information */
 185 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
 186 MODULE_DESCRIPTION("ALSA SoC driver for e750");
 187 MODULE_LICENSE("GPL v2");