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/audio.h>
  34
  35 #include "../codecs/wm9712.h"
  36 #include "pxa2xx-ac97.h"
  37
  38 static struct snd_soc_card tosa;
  39
  40 #define TOSA_HP        0
  41 #define TOSA_MIC_INT   1
  42 #define TOSA_HEADSET   2
  43 #define TOSA_HP_OFF    3
  44 #define TOSA_SPK_ON    0
  45 #define TOSA_SPK_OFF   1
  46
  47 static int tosa_jack_func;
  48 static int tosa_spk_func;
  49
  50 static void tosa_ext_control(struct snd_soc_codec *codec)
  51 {
  52         /* set up jack connection */
  53         switch (tosa_jack_func) {
  54         case TOSA_HP:
  55                 snd_soc_dapm_disable_pin(codec, "Mic (Internal)");
  56                 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
  57                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  58                 break;
  59         case TOSA_MIC_INT:
  60                 snd_soc_dapm_enable_pin(codec, "Mic (Internal)");
  61                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  62                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  63                 break;
  64         case TOSA_HEADSET:
  65                 snd_soc_dapm_disable_pin(codec, "Mic (Internal)");
  66                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  67                 snd_soc_dapm_enable_pin(codec, "Headset Jack");
  68                 break;
  69         }
  70
  71         if (tosa_spk_func == TOSA_SPK_ON)
  72                 snd_soc_dapm_enable_pin(codec, "Speaker");
  73         else
  74                 snd_soc_dapm_disable_pin(codec, "Speaker");
  75
  76         snd_soc_dapm_sync(codec);
  77 }
  78
  79 static int tosa_startup(struct snd_pcm_substream *substream)
  80 {
  81         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  82         struct snd_soc_codec *codec = rtd->codec;
  83
  84         mutex_lock(&codec->mutex);
  85
  86         /* check the jack status at stream startup */
  87         tosa_ext_control(codec);
  88
  89         mutex_unlock(&codec->mutex);
  90
  91         return 0;
  92 }
  93
  94 static struct snd_soc_ops tosa_ops = {
  95         .startup = tosa_startup,
  96 };
  97
  98 static int tosa_get_jack(struct snd_kcontrol *kcontrol,
  99         struct snd_ctl_elem_value *ucontrol)
 100 {
 101         ucontrol->value.integer.value[0] = tosa_jack_func;
 102         return 0;
 103 }
 104
 105 static int tosa_set_jack(struct snd_kcontrol *kcontrol,
 106         struct snd_ctl_elem_value *ucontrol)
 107 {
 108         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 109
 110         if (tosa_jack_func == ucontrol->value.integer.value[0])
 111                 return 0;
 112
 113         tosa_jack_func = ucontrol->value.integer.value[0];
 114         tosa_ext_control(codec);
 115         return 1;
 116 }
 117
 118 static int tosa_get_spk(struct snd_kcontrol *kcontrol,
 119         struct snd_ctl_elem_value *ucontrol)
 120 {
 121         ucontrol->value.integer.value[0] = tosa_spk_func;
 122         return 0;
 123 }
 124
 125 static int tosa_set_spk(struct snd_kcontrol *kcontrol,
 126         struct snd_ctl_elem_value *ucontrol)
 127 {
 128         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 129
 130         if (tosa_spk_func == ucontrol->value.integer.value[0])
 131                 return 0;
 132
 133         tosa_spk_func = ucontrol->value.integer.value[0];
 134         tosa_ext_control(codec);
 135         return 1;
 136 }
 137
 138 /* tosa dapm event handlers */
 139 static int tosa_hp_event(struct snd_soc_dapm_widget *w,
 140         struct snd_kcontrol *k, int event)
 141 {
 142         gpio_set_value(TOSA_GPIO_L_MUTE, SND_SOC_DAPM_EVENT_ON(event) ? 1 :0);
 143         return 0;
 144 }
 145
 146 /* tosa machine dapm widgets */
 147 static const struct snd_soc_dapm_widget tosa_dapm_widgets[] = {
 148 SND_SOC_DAPM_HP("Headphone Jack", tosa_hp_event),
 149 SND_SOC_DAPM_HP("Headset Jack", NULL),
 150 SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
 151 SND_SOC_DAPM_SPK("Speaker", NULL),
 152 };
 153
 154 /* tosa audio map */
 155 static const struct snd_soc_dapm_route audio_map[] = {
 156
 157         /* headphone connected to HPOUTL, HPOUTR */
 158         {"Headphone Jack", NULL, "HPOUTL"},
 159         {"Headphone Jack", NULL, "HPOUTR"},
 160
 161         /* ext speaker connected to LOUT2, ROUT2 */
 162         {"Speaker", NULL, "LOUT2"},
 163         {"Speaker", NULL, "ROUT2"},
 164
 165         /* internal mic is connected to mic1, mic2 differential - with bias */
 166         {"MIC1", NULL, "Mic Bias"},
 167         {"MIC2", NULL, "Mic Bias"},
 168         {"Mic Bias", NULL, "Mic (Internal)"},
 169
 170         /* headset is connected to HPOUTR, and LINEINR with bias */
 171         {"Headset Jack", NULL, "HPOUTR"},
 172         {"LINEINR", NULL, "Mic Bias"},
 173         {"Mic Bias", NULL, "Headset Jack"},
 174 };
 175
 176 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
 177         "Off"};
 178 static const char *spk_function[] = {"On", "Off"};
 179 static const struct soc_enum tosa_enum[] = {
 180         SOC_ENUM_SINGLE_EXT(5, jack_function),
 181         SOC_ENUM_SINGLE_EXT(2, spk_function),
 182 };
 183
 184 static const struct snd_kcontrol_new tosa_controls[] = {
 185         SOC_ENUM_EXT("Jack Function", tosa_enum[0], tosa_get_jack,
 186                 tosa_set_jack),
 187         SOC_ENUM_EXT("Speaker Function", tosa_enum[1], tosa_get_spk,
 188                 tosa_set_spk),
 189 };
 190
 191 static int tosa_ac97_init(struct snd_soc_pcm_runtime *rtd)
 192 {
 193         struct snd_soc_codec *codec = rtd->codec;
 194         int err;
 195
 196         snd_soc_dapm_nc_pin(codec, "OUT3");
 197         snd_soc_dapm_nc_pin(codec, "MONOOUT");
 198
 199         /* add tosa specific controls */
 200         err = snd_soc_add_controls(codec, tosa_controls,
 201                                 ARRAY_SIZE(tosa_controls));
 202         if (err < 0)
 203                 return err;
 204
 205         /* add tosa specific widgets */
 206         snd_soc_dapm_new_controls(codec, tosa_dapm_widgets,
 207                                   ARRAY_SIZE(tosa_dapm_widgets));
 208
 209         /* set up tosa specific audio path audio_map */
 210         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 211
 212         snd_soc_dapm_sync(codec);
 213         return 0;
 214 }
 215
 216 static struct snd_soc_dai_link tosa_dai[] = {
 217 {
 218         .name = "AC97",
 219         .stream_name = "AC97 HiFi",
 220         .cpu_dai_name = "pxa2xx-ac97",
 221         .codec_dai_name = "wm9712-hifi",
 222         .platform_name = "pxa-pcm-audio",
 223         .codec_name = "wm9712-codec",
 224         .init = tosa_ac97_init,
 225         .ops = &tosa_ops,
 226 },
 227 {
 228         .name = "AC97 Aux",
 229         .stream_name = "AC97 Aux",
 230         .cpu_dai_name = "pxa2xx-ac97-aux",
 231         .codec_dai_name = "wm9712-aux",
 232         .platform_name = "pxa-pcm-audio",
 233         .codec_name = "wm9712-codec",
 234         .ops = &tosa_ops,
 235 },
 236 };
 237
 238 static int tosa_probe(struct platform_device *dev)
 239 {
 240         int ret;
 241
 242         ret = gpio_request(TOSA_GPIO_L_MUTE, "Headphone Jack");
 243         if (ret)
 244                 return ret;
 245         ret = gpio_direction_output(TOSA_GPIO_L_MUTE, 0);
 246         if (ret)
 247                 gpio_free(TOSA_GPIO_L_MUTE);
 248
 249         return ret;
 250 }
 251
 252 static int tosa_remove(struct platform_device *dev)
 253 {
 254         gpio_free(TOSA_GPIO_L_MUTE);
 255         return 0;
 256 }
 257
 258 static struct snd_soc_card tosa = {
 259         .name = "Tosa",
 260         .dai_link = tosa_dai,
 261         .num_links = ARRAY_SIZE(tosa_dai),
 262         .probe = tosa_probe,
 263         .remove = tosa_remove,
 264 };
 265
 266 static struct platform_device *tosa_snd_device;
 267
 268 static int __init tosa_init(void)
 269 {
 270         int ret;
 271
 272         if (!machine_is_tosa())
 273                 return -ENODEV;
 274
 275         tosa_snd_device = platform_device_alloc("soc-audio", -1);
 276         if (!tosa_snd_device) {
 277                 ret = -ENOMEM;
 278                 goto err_alloc;
 279         }
 280
 281         platform_set_drvdata(tosa_snd_device, &tosa);
 282         ret = platform_device_add(tosa_snd_device);
 283
 284         if (!ret)
 285                 return 0;
 286
 287         platform_device_put(tosa_snd_device);
 288
 289 err_alloc:
 290         return ret;
 291 }
 292
 293 static void __exit tosa_exit(void)
 294 {
 295         platform_device_unregister(tosa_snd_device);
 296 }
 297
 298 module_init(tosa_init);
 299 module_exit(tosa_exit);
 300
 301 /* Module information */
 302 MODULE_AUTHOR("Richard Purdie");
 303 MODULE_DESCRIPTION("ALSA SoC Tosa");
 304 MODULE_LICENSE("GPL");