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 #include "../codecs/wm9705.h"
  26 #include "pxa2xx-ac97.h"
  27
  28 static int e750_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_E750_SPK_AMP_OFF, 0);
  33         else if (event & SND_SOC_DAPM_POST_PMD)
  34                 gpio_set_value(GPIO_E750_SPK_AMP_OFF, 1);
  35
  36         return 0;
  37 }
  38
  39 static int e750_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_E750_HP_AMP_OFF, 0);
  44         else if (event & SND_SOC_DAPM_POST_PMD)
  45                 gpio_set_value(GPIO_E750_HP_AMP_OFF, 1);
  46
  47         return 0;
  48 }
  49
  50 static const struct snd_soc_dapm_widget e750_dapm_widgets[] = {
  51         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  52         SND_SOC_DAPM_SPK("Speaker", NULL),
  53         SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
  54         SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  55                         e750_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                         e750_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 Amp", NULL, "HPOUTL"},
  64         {"Headphone Amp", NULL, "HPOUTR"},
  65         {"Headphone Jack", NULL, "Headphone Amp"},
  66
  67         {"Speaker Amp", NULL, "MONOOUT"},
  68         {"Speaker", NULL, "Speaker Amp"},
  69
  70         {"MIC1", NULL, "Mic (Internal)"},
  71 };
  72
  73 static int e750_ac97_init(struct snd_soc_pcm_runtime *rtd)
  74 {
  75         struct snd_soc_codec *codec = rtd->codec;
  76         struct snd_soc_dapm_context *dapm = &codec->dapm;
  77
  78         snd_soc_dapm_nc_pin(dapm, "LOUT");
  79         snd_soc_dapm_nc_pin(dapm, "ROUT");
  80         snd_soc_dapm_nc_pin(dapm, "PHONE");
  81         snd_soc_dapm_nc_pin(dapm, "LINEINL");
  82         snd_soc_dapm_nc_pin(dapm, "LINEINR");
  83         snd_soc_dapm_nc_pin(dapm, "CDINL");
  84         snd_soc_dapm_nc_pin(dapm, "CDINR");
  85         snd_soc_dapm_nc_pin(dapm, "PCBEEP");
  86         snd_soc_dapm_nc_pin(dapm, "MIC2");
  87
  88         snd_soc_dapm_new_controls(dapm, e750_dapm_widgets,
  89                                         ARRAY_SIZE(e750_dapm_widgets));
  90
  91         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
  92
  93         return 0;
  94 }
  95
  96 static struct snd_soc_dai_link e750_dai[] = {
  97         {
  98                 .name = "AC97",
  99                 .stream_name = "AC97 HiFi",
 100                 .cpu_dai_name = "pxa2xx-ac97",
 101                 .codec_dai_name = "wm9705-hifi",
 102                 .platform_name = "pxa-pcm-audio",
 103                 .codec_name = "wm9705-codec",
 104                 .init = e750_ac97_init,
 105                 /* use ops to check startup state */
 106         },
 107         {
 108                 .name = "AC97 Aux",
 109                 .stream_name = "AC97 Aux",
 110                 .cpu_dai_name = "pxa2xx-ac97-aux",
 111                 .codec_dai_name ="wm9705-aux",
 112                 .platform_name = "pxa-pcm-audio",
 113                 .codec_name = "wm9705-codec",
 114         },
 115 };
 116
 117 static struct snd_soc_card e750 = {
 118         .name = "Toshiba e750",
 119         .dai_link = e750_dai,
 120         .num_links = ARRAY_SIZE(e750_dai),
 121 };
 122
 123 static struct platform_device *e750_snd_device;
 124
 125 static int __init e750_init(void)
 126 {
 127         int ret;
 128
 129         if (!machine_is_e750())
 130                 return -ENODEV;
 131
 132         ret = gpio_request(GPIO_E750_HP_AMP_OFF,  "Headphone amp");
 133         if (ret)
 134                 return ret;
 135
 136         ret = gpio_request(GPIO_E750_SPK_AMP_OFF, "Speaker amp");
 137         if (ret)
 138                 goto free_hp_amp_gpio;
 139
 140         ret = gpio_direction_output(GPIO_E750_HP_AMP_OFF, 1);
 141         if (ret)
 142                 goto free_spk_amp_gpio;
 143
 144         ret = gpio_direction_output(GPIO_E750_SPK_AMP_OFF, 1);
 145         if (ret)
 146                 goto free_spk_amp_gpio;
 147
 148         e750_snd_device = platform_device_alloc("soc-audio", -1);
 149         if (!e750_snd_device) {
 150                 ret = -ENOMEM;
 151                 goto free_spk_amp_gpio;
 152         }
 153
 154         platform_set_drvdata(e750_snd_device, &e750);
 155         ret = platform_device_add(e750_snd_device);
 156
 157         if (!ret)
 158                 return 0;
 159
 160 /* Fail gracefully */
 161         platform_device_put(e750_snd_device);
 162 free_spk_amp_gpio:
 163         gpio_free(GPIO_E750_SPK_AMP_OFF);
 164 free_hp_amp_gpio:
 165         gpio_free(GPIO_E750_HP_AMP_OFF);
 166
 167         return ret;
 168 }
 169
 170 static void __exit e750_exit(void)
 171 {
 172         platform_device_unregister(e750_snd_device);
 173         gpio_free(GPIO_E750_SPK_AMP_OFF);
 174         gpio_free(GPIO_E750_HP_AMP_OFF);
 175 }
 176
 177 module_init(e750_init);
 178 module_exit(e750_exit);
 179
 180 /* Module information */
 181 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
 182 MODULE_DESCRIPTION("ALSA SoC driver for e750");
 183 MODULE_LICENSE("GPL v2");