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 #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
  31 #define E740_AUDIO_OUT 1
  32 #define E740_AUDIO_IN  2
  33
  34 static int e740_audio_power;
  35
  36 static void e740_sync_audio_power(int status)
  37 {
  38         gpio_set_value(GPIO_E740_WM9705_nAVDD2, !status);
  39         gpio_set_value(GPIO_E740_AMP_ON, (status & E740_AUDIO_OUT) ? 1 : 0);
  40         gpio_set_value(GPIO_E740_MIC_ON, (status & E740_AUDIO_IN) ? 1 : 0);
  41 }
  42
  43 static int e740_mic_amp_event(struct snd_soc_dapm_widget *w,
  44                                 struct snd_kcontrol *kcontrol, int event)
  45 {
  46         if (event & SND_SOC_DAPM_PRE_PMU)
  47                 e740_audio_power |= E740_AUDIO_IN;
  48         else if (event & SND_SOC_DAPM_POST_PMD)
  49                 e740_audio_power &= ~E740_AUDIO_IN;
  50
  51         e740_sync_audio_power(e740_audio_power);
  52
  53         return 0;
  54 }
  55
  56 static int e740_output_amp_event(struct snd_soc_dapm_widget *w,
  57                                 struct snd_kcontrol *kcontrol, int event)
  58 {
  59         if (event & SND_SOC_DAPM_PRE_PMU)
  60                 e740_audio_power |= E740_AUDIO_OUT;
  61         else if (event & SND_SOC_DAPM_POST_PMD)
  62                 e740_audio_power &= ~E740_AUDIO_OUT;
  63
  64         e740_sync_audio_power(e740_audio_power);
  65
  66         return 0;
  67 }
  68
  69 static const struct snd_soc_dapm_widget e740_dapm_widgets[] = {
  70         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  71         SND_SOC_DAPM_SPK("Speaker", NULL),
  72         SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
  73         SND_SOC_DAPM_PGA_E("Output Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  74                         e740_output_amp_event, SND_SOC_DAPM_PRE_PMU |
  75                         SND_SOC_DAPM_POST_PMD),
  76         SND_SOC_DAPM_PGA_E("Mic Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  77                         e740_mic_amp_event, SND_SOC_DAPM_PRE_PMU |
  78                         SND_SOC_DAPM_POST_PMD),
  79 };
  80
  81 static const struct snd_soc_dapm_route audio_map[] = {
  82         {"Output Amp", NULL, "LOUT"},
  83         {"Output Amp", NULL, "ROUT"},
  84         {"Output Amp", NULL, "MONOOUT"},
  85
  86         {"Speaker", NULL, "Output Amp"},
  87         {"Headphone Jack", NULL, "Output Amp"},
  88
  89         {"MIC1", NULL, "Mic Amp"},
  90         {"Mic Amp", NULL, "Mic (Internal)"},
  91 };
  92
  93 static int e740_ac97_init(struct snd_soc_codec *codec)
  94 {
  95         snd_soc_dapm_nc_pin(codec, "HPOUTL");
  96         snd_soc_dapm_nc_pin(codec, "HPOUTR");
  97         snd_soc_dapm_nc_pin(codec, "PHONE");
  98         snd_soc_dapm_nc_pin(codec, "LINEINL");
  99         snd_soc_dapm_nc_pin(codec, "LINEINR");
 100         snd_soc_dapm_nc_pin(codec, "CDINL");
 101         snd_soc_dapm_nc_pin(codec, "CDINR");
 102         snd_soc_dapm_nc_pin(codec, "PCBEEP");
 103         snd_soc_dapm_nc_pin(codec, "MIC2");
 104
 105         snd_soc_dapm_new_controls(codec, e740_dapm_widgets,
 106                                         ARRAY_SIZE(e740_dapm_widgets));
 107
 108         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 109
 110         snd_soc_dapm_sync(codec);
 111
 112         return 0;
 113 }
 114
 115 static struct snd_soc_dai_link e740_dai[] = {
 116         {
 117                 .name = "AC97",
 118                 .stream_name = "AC97 HiFi",
 119                 .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
 120                 .codec_dai = &wm9705_dai[WM9705_DAI_AC97_HIFI],
 121                 .init = e740_ac97_init,
 122         },
 123         {
 124                 .name = "AC97 Aux",
 125                 .stream_name = "AC97 Aux",
 126                 .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
 127                 .codec_dai = &wm9705_dai[WM9705_DAI_AC97_AUX],
 128         },
 129 };
 130
 131 static struct snd_soc_card e740 = {
 132         .name = "Toshiba e740",
 133         .platform = &pxa2xx_soc_platform,
 134         .dai_link = e740_dai,
 135         .num_links = ARRAY_SIZE(e740_dai),
 136 };
 137
 138 static struct snd_soc_device e740_snd_devdata = {
 139         .card = &e740,
 140         .codec_dev = &soc_codec_dev_wm9705,
 141 };
 142
 143 static struct platform_device *e740_snd_device;
 144
 145 static int __init e740_init(void)
 146 {
 147         int ret;
 148
 149         if (!machine_is_e740())
 150                 return -ENODEV;
 151
 152         ret = gpio_request(GPIO_E740_MIC_ON,  "Mic amp");
 153         if (ret)
 154                 return ret;
 155
 156         ret = gpio_request(GPIO_E740_AMP_ON, "Output amp");
 157         if (ret)
 158                 goto free_mic_amp_gpio;
 159
 160         ret = gpio_request(GPIO_E740_WM9705_nAVDD2, "Audio power");
 161         if (ret)
 162                 goto free_op_amp_gpio;
 163
 164         /* Disable audio */
 165         ret = gpio_direction_output(GPIO_E740_MIC_ON, 0);
 166         if (ret)
 167                 goto free_apwr_gpio;
 168         ret = gpio_direction_output(GPIO_E740_AMP_ON, 0);
 169         if (ret)
 170                 goto free_apwr_gpio;
 171         ret = gpio_direction_output(GPIO_E740_WM9705_nAVDD2, 1);
 172         if (ret)
 173                 goto free_apwr_gpio;
 174
 175         e740_snd_device = platform_device_alloc("soc-audio", -1);
 176         if (!e740_snd_device) {
 177                 ret = -ENOMEM;
 178                 goto free_apwr_gpio;
 179         }
 180
 181         platform_set_drvdata(e740_snd_device, &e740_snd_devdata);
 182         e740_snd_devdata.dev = &e740_snd_device->dev;
 183         ret = platform_device_add(e740_snd_device);
 184
 185         if (!ret)
 186                 return 0;
 187
 188 /* Fail gracefully */
 189         platform_device_put(e740_snd_device);
 190 free_apwr_gpio:
 191         gpio_free(GPIO_E740_WM9705_nAVDD2);
 192 free_op_amp_gpio:
 193         gpio_free(GPIO_E740_AMP_ON);
 194 free_mic_amp_gpio:
 195         gpio_free(GPIO_E740_MIC_ON);
 196
 197         return ret;
 198 }
 199
 200 static void __exit e740_exit(void)
 201 {
 202         platform_device_unregister(e740_snd_device);
 203 }
 204
 205 module_init(e740_init);
 206 module_exit(e740_exit);
 207
 208 /* Module information */
 209 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
 210 MODULE_DESCRIPTION("ALSA SoC driver for e740");
 211 MODULE_LICENSE("GPL v2");