kernel/2.6.29.6-aldebaran-rt/sound/soc/pxa/tosa.c

   1 /*
   2  * tosa.c  --  SoC audio for Tosa
   3  *
   4  * Copyright 2005 Wolfson Microelectronics PLC.
   5  * Copyright 2005 Openedhand Ltd.
   6  *
   7  * Authors: Liam Girdwood <lrg@slimlogic.co.uk>
   8  *          Richard Purdie <richard@openedhand.com>
   9  *
  10  *  This program is free software; you can redistribute  it and/or modify it
  11  *  under  the terms of  the GNU General  Public License as published by the
  12  *  Free Software Foundation;  either version 2 of the  License, or (at your
  13  *  option) any later version.
  14  *
  15  * GPIO's
  16  *  1 - Jack Insertion
  17  *  5 - Hookswitch (headset answer/hang up switch)
  18  *
  19  */
  20
  21 #include <linux/module.h>
  22 #include <linux/moduleparam.h>
  23 #include <linux/device.h>
  24 #include <linux/gpio.h>
  25
  26 #include <sound/core.h>
  27 #include <sound/pcm.h>
  28 #include <sound/soc.h>
  29 #include <sound/soc-dapm.h>
  30
  31 #include <asm/mach-types.h>
  32 #include <mach/tosa.h>
  33 #include <mach/pxa-regs.h>
  34 #include <mach/hardware.h>
  35 #include <mach/audio.h>
  36
  37 #include "../codecs/wm9712.h"
  38 #include "pxa2xx-pcm.h"
  39 #include "pxa2xx-ac97.h"
  40
  41 static struct snd_soc_card tosa;
  42
  43 #define TOSA_HP        0
  44 #define TOSA_MIC_INT   1
  45 #define TOSA_HEADSET   2
  46 #define TOSA_HP_OFF    3
  47 #define TOSA_SPK_ON    0
  48 #define TOSA_SPK_OFF   1
  49
  50 static int tosa_jack_func;
  51 static int tosa_spk_func;
  52
  53 static void tosa_ext_control(struct snd_soc_codec *codec)
  54 {
  55         /* set up jack connection */
  56         switch (tosa_jack_func) {
  57         case TOSA_HP:
  58                 snd_soc_dapm_disable_pin(codec, "Mic (Internal)");
  59                 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
  60                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  61                 break;
  62         case TOSA_MIC_INT:
  63                 snd_soc_dapm_enable_pin(codec, "Mic (Internal)");
  64                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  65                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  66                 break;
  67         case TOSA_HEADSET:
  68                 snd_soc_dapm_disable_pin(codec, "Mic (Internal)");
  69                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  70                 snd_soc_dapm_enable_pin(codec, "Headset Jack");
  71                 break;
  72         }
  73
  74         if (tosa_spk_func == TOSA_SPK_ON)
  75                 snd_soc_dapm_enable_pin(codec, "Speaker");
  76         else
  77                 snd_soc_dapm_disable_pin(codec, "Speaker");
  78
  79         snd_soc_dapm_sync(codec);
  80 }
  81
  82 static int tosa_startup(struct snd_pcm_substream *substream)
  83 {
  84         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  85         struct snd_soc_codec *codec = rtd->socdev->codec;
  86
  87         /* check the jack status at stream startup */
  88         tosa_ext_control(codec);
  89         return 0;
  90 }
  91
  92 static struct snd_soc_ops tosa_ops = {
  93         .startup = tosa_startup,
  94 };
  95
  96 static int tosa_get_jack(struct snd_kcontrol *kcontrol,
  97         struct snd_ctl_elem_value *ucontrol)
  98 {
  99         ucontrol->value.integer.value[0] = tosa_jack_func;
 100         return 0;
 101 }
 102
 103 static int tosa_set_jack(struct snd_kcontrol *kcontrol,
 104         struct snd_ctl_elem_value *ucontrol)
 105 {
 106         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 107
 108         if (tosa_jack_func == ucontrol->value.integer.value[0])
 109                 return 0;
 110
 111         tosa_jack_func = ucontrol->value.integer.value[0];
 112         tosa_ext_control(codec);
 113         return 1;
 114 }
 115
 116 static int tosa_get_spk(struct snd_kcontrol *kcontrol,
 117         struct snd_ctl_elem_value *ucontrol)
 118 {
 119         ucontrol->value.integer.value[0] = tosa_spk_func;
 120         return 0;
 121 }
 122
 123 static int tosa_set_spk(struct snd_kcontrol *kcontrol,
 124         struct snd_ctl_elem_value *ucontrol)
 125 {
 126         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 127
 128         if (tosa_spk_func == ucontrol->value.integer.value[0])
 129                 return 0;
 130
 131         tosa_spk_func = ucontrol->value.integer.value[0];
 132         tosa_ext_control(codec);
 133         return 1;
 134 }
 135
 136 /* tosa dapm event handlers */
 137 static int tosa_hp_event(struct snd_soc_dapm_widget *w,
 138         struct snd_kcontrol *k, int event)
 139 {
 140         gpio_set_value(TOSA_GPIO_L_MUTE, SND_SOC_DAPM_EVENT_ON(event) ? 1 :0);
 141         return 0;
 142 }
 143
 144 /* tosa machine dapm widgets */
 145 static const struct snd_soc_dapm_widget tosa_dapm_widgets[] = {
 146 SND_SOC_DAPM_HP("Headphone Jack", tosa_hp_event),
 147 SND_SOC_DAPM_HP("Headset Jack", NULL),
 148 SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
 149 SND_SOC_DAPM_SPK("Speaker", NULL),
 150 };
 151
 152 /* tosa audio map */
 153 static const struct snd_soc_dapm_route audio_map[] = {
 154
 155         /* headphone connected to HPOUTL, HPOUTR */
 156         {"Headphone Jack", NULL, "HPOUTL"},
 157         {"Headphone Jack", NULL, "HPOUTR"},
 158
 159         /* ext speaker connected to LOUT2, ROUT2 */
 160         {"Speaker", NULL, "LOUT2"},
 161         {"Speaker", NULL, "ROUT2"},
 162
 163         /* internal mic is connected to mic1, mic2 differential - with bias */
 164         {"MIC1", NULL, "Mic Bias"},
 165         {"MIC2", NULL, "Mic Bias"},
 166         {"Mic Bias", NULL, "Mic (Internal)"},
 167
 168         /* headset is connected to HPOUTR, and LINEINR with bias */
 169         {"Headset Jack", NULL, "HPOUTR"},
 170         {"LINEINR", NULL, "Mic Bias"},
 171         {"Mic Bias", NULL, "Headset Jack"},
 172 };
 173
 174 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
 175         "Off"};
 176 static const char *spk_function[] = {"On", "Off"};
 177 static const struct soc_enum tosa_enum[] = {
 178         SOC_ENUM_SINGLE_EXT(5, jack_function),
 179         SOC_ENUM_SINGLE_EXT(2, spk_function),
 180 };
 181
 182 static const struct snd_kcontrol_new tosa_controls[] = {
 183         SOC_ENUM_EXT("Jack Function", tosa_enum[0], tosa_get_jack,
 184                 tosa_set_jack),
 185         SOC_ENUM_EXT("Speaker Function", tosa_enum[1], tosa_get_spk,
 186                 tosa_set_spk),
 187 };
 188
 189 static int tosa_ac97_init(struct snd_soc_codec *codec)
 190 {
 191         int i, err;
 192
 193         snd_soc_dapm_nc_pin(codec, "OUT3");
 194         snd_soc_dapm_nc_pin(codec, "MONOOUT");
 195
 196         /* add tosa specific controls */
 197         for (i = 0; i < ARRAY_SIZE(tosa_controls); i++) {
 198                 err = snd_ctl_add(codec->card,
 199                                 snd_soc_cnew(&tosa_controls[i],codec, NULL));
 200                 if (err < 0)
 201                         return err;
 202         }
 203
 204         /* add tosa specific widgets */
 205         snd_soc_dapm_new_controls(codec, tosa_dapm_widgets,
 206                                   ARRAY_SIZE(tosa_dapm_widgets));
 207
 208         /* set up tosa specific audio path audio_map */
 209         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 210
 211         snd_soc_dapm_sync(codec);
 212         return 0;
 213 }
 214
 215 static struct snd_soc_dai_link tosa_dai[] = {
 216 {
 217         .name = "AC97",
 218         .stream_name = "AC97 HiFi",
 219         .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
 220         .codec_dai = &wm9712_dai[WM9712_DAI_AC97_HIFI],
 221         .init = tosa_ac97_init,
 222         .ops = &tosa_ops,
 223 },
 224 {
 225         .name = "AC97 Aux",
 226         .stream_name = "AC97 Aux",
 227         .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
 228         .codec_dai = &wm9712_dai[WM9712_DAI_AC97_AUX],
 229         .ops = &tosa_ops,
 230 },
 231 };
 232
 233 static int tosa_probe(struct platform_device *dev)
 234 {
 235         int ret;
 236
 237         ret = gpio_request(TOSA_GPIO_L_MUTE, "Headphone Jack");
 238         if (ret)
 239                 return ret;
 240         ret = gpio_direction_output(TOSA_GPIO_L_MUTE, 0);
 241         if (ret)
 242                 gpio_free(TOSA_GPIO_L_MUTE);
 243
 244         return ret;
 245 }
 246
 247 static int tosa_remove(struct platform_device *dev)
 248 {
 249         gpio_free(TOSA_GPIO_L_MUTE);
 250         return 0;
 251 }
 252
 253 static struct snd_soc_card tosa = {
 254         .name = "Tosa",
 255         .platform = &pxa2xx_soc_platform,
 256         .dai_link = tosa_dai,
 257         .num_links = ARRAY_SIZE(tosa_dai),
 258         .probe = tosa_probe,
 259         .remove = tosa_remove,
 260 };
 261
 262 static struct snd_soc_device tosa_snd_devdata = {
 263         .card = &tosa,
 264         .codec_dev = &soc_codec_dev_wm9712,
 265 };
 266
 267 static struct platform_device *tosa_snd_device;
 268
 269 static int __init tosa_init(void)
 270 {
 271         int ret;
 272
 273         if (!machine_is_tosa())
 274                 return -ENODEV;
 275
 276         tosa_snd_device = platform_device_alloc("soc-audio", -1);
 277         if (!tosa_snd_device) {
 278                 ret = -ENOMEM;
 279                 goto err_alloc;
 280         }
 281
 282         platform_set_drvdata(tosa_snd_device, &tosa_snd_devdata);
 283         tosa_snd_devdata.dev = &tosa_snd_device->dev;
 284         ret = platform_device_add(tosa_snd_device);
 285
 286         if (!ret)
 287                 return 0;
 288
 289         platform_device_put(tosa_snd_device);
 290
 291 err_alloc:
 292         return ret;
 293 }
 294
 295 static void __exit tosa_exit(void)
 296 {
 297         platform_device_unregister(tosa_snd_device);
 298 }
 299
 300 module_init(tosa_init);
 301 module_exit(tosa_exit);
 302
 303 /* Module information */
 304 MODULE_AUTHOR("Richard Purdie");
 305 MODULE_DESCRIPTION("ALSA SoC Tosa");
 306 MODULE_LICENSE("GPL");