sound/soc/pxa/e740_wm9705.c

   1 /*
   2  * e740-wm9705.c  --  SoC audio for e740
   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
  29 #define E740_AUDIO_OUT 1
  30 #define E740_AUDIO_IN  2
  31
  32 static int e740_audio_power;
  33
  34 static void e740_sync_audio_power(int status)
  35 {
  36         gpio_set_value(GPIO_E740_WM9705_nAVDD2, !status);
  37         gpio_set_value(GPIO_E740_AMP_ON, (status & E740_AUDIO_OUT) ? 1 : 0);
  38         gpio_set_value(GPIO_E740_MIC_ON, (status & E740_AUDIO_IN) ? 1 : 0);
  39 }
  40
  41 static int e740_mic_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                 e740_audio_power |= E740_AUDIO_IN;
  46         else if (event & SND_SOC_DAPM_POST_PMD)
  47                 e740_audio_power &= ~E740_AUDIO_IN;
  48
  49         e740_sync_audio_power(e740_audio_power);
  50
  51         return 0;
  52 }
  53
  54 static int e740_output_amp_event(struct snd_soc_dapm_widget *w,
  55                                 struct snd_kcontrol *kcontrol, int event)
  56 {
  57         if (event & SND_SOC_DAPM_PRE_PMU)
  58                 e740_audio_power |= E740_AUDIO_OUT;
  59         else if (event & SND_SOC_DAPM_POST_PMD)
  60                 e740_audio_power &= ~E740_AUDIO_OUT;
  61
  62         e740_sync_audio_power(e740_audio_power);
  63
  64         return 0;
  65 }
  66
  67 static const struct snd_soc_dapm_widget e740_dapm_widgets[] = {
  68         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  69         SND_SOC_DAPM_SPK("Speaker", NULL),
  70         SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
  71         SND_SOC_DAPM_PGA_E("Output Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  72                         e740_output_amp_event, SND_SOC_DAPM_PRE_PMU |
  73                         SND_SOC_DAPM_POST_PMD),
  74         SND_SOC_DAPM_PGA_E("Mic Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  75                         e740_mic_amp_event, SND_SOC_DAPM_PRE_PMU |
  76                         SND_SOC_DAPM_POST_PMD),
  77 };
  78
  79 static const struct snd_soc_dapm_route audio_map[] = {
  80         {"Output Amp", NULL, "LOUT"},
  81         {"Output Amp", NULL, "ROUT"},
  82         {"Output Amp", NULL, "MONOOUT"},
  83
  84         {"Speaker", NULL, "Output Amp"},
  85         {"Headphone Jack", NULL, "Output Amp"},
  86
  87         {"MIC1", NULL, "Mic Amp"},
  88         {"Mic Amp", NULL, "Mic (Internal)"},
  89 };
  90
  91 static int e740_ac97_init(struct snd_soc_pcm_runtime *rtd)
  92 {
  93         struct snd_soc_codec *codec = rtd->codec;
  94         struct snd_soc_dapm_context *dapm = &codec->dapm;
  95
  96         snd_soc_dapm_nc_pin(dapm, "HPOUTL");
  97         snd_soc_dapm_nc_pin(dapm, "HPOUTR");
  98         snd_soc_dapm_nc_pin(dapm, "PHONE");
  99         snd_soc_dapm_nc_pin(dapm, "LINEINL");
 100         snd_soc_dapm_nc_pin(dapm, "LINEINR");
 101         snd_soc_dapm_nc_pin(dapm, "CDINL");
 102         snd_soc_dapm_nc_pin(dapm, "CDINR");
 103         snd_soc_dapm_nc_pin(dapm, "PCBEEP");
 104         snd_soc_dapm_nc_pin(dapm, "MIC2");
 105
 106         snd_soc_dapm_new_controls(dapm, e740_dapm_widgets,
 107                                         ARRAY_SIZE(e740_dapm_widgets));
 108
 109         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 110
 111         return 0;
 112 }
 113
 114 static struct snd_soc_dai_link e740_dai[] = {
 115         {
 116                 .name = "AC97",
 117                 .stream_name = "AC97 HiFi",
 118                 .cpu_dai_name = "pxa2xx-ac97",
 119                 .codec_dai_name = "wm9705-hifi",
 120                 .platform_name = "pxa-pcm-audio",
 121                 .codec_name = "wm9705-codec",
 122                 .init = e740_ac97_init,
 123         },
 124         {
 125                 .name = "AC97 Aux",
 126                 .stream_name = "AC97 Aux",
 127                 .cpu_dai_name = "pxa2xx-ac97-aux",
 128                 .codec_dai_name = "wm9705-aux",
 129                 .platform_name = "pxa-pcm-audio",
 130                 .codec_name = "wm9705-codec",
 131         },
 132 };
 133
 134 static struct snd_soc_card e740 = {
 135         .name = "Toshiba e740",
 136         .dai_link = e740_dai,
 137         .num_links = ARRAY_SIZE(e740_dai),
 138 };
 139
 140 static struct platform_device *e740_snd_device;
 141
 142 static int __init e740_init(void)
 143 {
 144         int ret;
 145
 146         if (!machine_is_e740())
 147                 return -ENODEV;
 148
 149         ret = gpio_request(GPIO_E740_MIC_ON,  "Mic amp");
 150         if (ret)
 151                 return ret;
 152
 153         ret = gpio_request(GPIO_E740_AMP_ON, "Output amp");
 154         if (ret)
 155                 goto free_mic_amp_gpio;
 156
 157         ret = gpio_request(GPIO_E740_WM9705_nAVDD2, "Audio power");
 158         if (ret)
 159                 goto free_op_amp_gpio;
 160
 161         /* Disable audio */
 162         ret = gpio_direction_output(GPIO_E740_MIC_ON, 0);
 163         if (ret)
 164                 goto free_apwr_gpio;
 165         ret = gpio_direction_output(GPIO_E740_AMP_ON, 0);
 166         if (ret)
 167                 goto free_apwr_gpio;
 168         ret = gpio_direction_output(GPIO_E740_WM9705_nAVDD2, 1);
 169         if (ret)
 170                 goto free_apwr_gpio;
 171
 172         e740_snd_device = platform_device_alloc("soc-audio", -1);
 173         if (!e740_snd_device) {
 174                 ret = -ENOMEM;
 175                 goto free_apwr_gpio;
 176         }
 177
 178         platform_set_drvdata(e740_snd_device, &e740);
 179         ret = platform_device_add(e740_snd_device);
 180
 181         if (!ret)
 182                 return 0;
 183
 184 /* Fail gracefully */
 185         platform_device_put(e740_snd_device);
 186 free_apwr_gpio:
 187         gpio_free(GPIO_E740_WM9705_nAVDD2);
 188 free_op_amp_gpio:
 189         gpio_free(GPIO_E740_AMP_ON);
 190 free_mic_amp_gpio:
 191         gpio_free(GPIO_E740_MIC_ON);
 192
 193         return ret;
 194 }
 195
 196 static void __exit e740_exit(void)
 197 {
 198         platform_device_unregister(e740_snd_device);
 199         gpio_free(GPIO_E740_WM9705_nAVDD2);
 200         gpio_free(GPIO_E740_AMP_ON);
 201         gpio_free(GPIO_E740_MIC_ON);
 202 }
 203
 204 module_init(e740_init);
 205 module_exit(e740_exit);
 206
 207 /* Module information */
 208 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
 209 MODULE_DESCRIPTION("ALSA SoC driver for e740");
 210 MODULE_LICENSE("GPL v2");