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         /* check the jack status at stream startup */
  85         tosa_ext_control(codec);
  86         return 0;
  87 }
  88
  89 static struct snd_soc_ops tosa_ops = {
  90         .startup = tosa_startup,
  91 };
  92
  93 static int tosa_get_jack(struct snd_kcontrol *kcontrol,
  94         struct snd_ctl_elem_value *ucontrol)
  95 {
  96         ucontrol->value.integer.value[0] = tosa_jack_func;
  97         return 0;
  98 }
  99
 100 static int tosa_set_jack(struct snd_kcontrol *kcontrol,
 101         struct snd_ctl_elem_value *ucontrol)
 102 {
 103         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 104
 105         if (tosa_jack_func == ucontrol->value.integer.value[0])
 106                 return 0;
 107
 108         tosa_jack_func = ucontrol->value.integer.value[0];
 109         tosa_ext_control(codec);
 110         return 1;
 111 }
 112
 113 static int tosa_get_spk(struct snd_kcontrol *kcontrol,
 114         struct snd_ctl_elem_value *ucontrol)
 115 {
 116         ucontrol->value.integer.value[0] = tosa_spk_func;
 117         return 0;
 118 }
 119
 120 static int tosa_set_spk(struct snd_kcontrol *kcontrol,
 121         struct snd_ctl_elem_value *ucontrol)
 122 {
 123         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 124
 125         if (tosa_spk_func == ucontrol->value.integer.value[0])
 126                 return 0;
 127
 128         tosa_spk_func = ucontrol->value.integer.value[0];
 129         tosa_ext_control(codec);
 130         return 1;
 131 }
 132
 133 /* tosa dapm event handlers */
 134 static int tosa_hp_event(struct snd_soc_dapm_widget *w,
 135         struct snd_kcontrol *k, int event)
 136 {
 137         gpio_set_value(TOSA_GPIO_L_MUTE, SND_SOC_DAPM_EVENT_ON(event) ? 1 :0);
 138         return 0;
 139 }
 140
 141 /* tosa machine dapm widgets */
 142 static const struct snd_soc_dapm_widget tosa_dapm_widgets[] = {
 143 SND_SOC_DAPM_HP("Headphone Jack", tosa_hp_event),
 144 SND_SOC_DAPM_HP("Headset Jack", NULL),
 145 SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
 146 SND_SOC_DAPM_SPK("Speaker", NULL),
 147 };
 148
 149 /* tosa audio map */
 150 static const struct snd_soc_dapm_route audio_map[] = {
 151
 152         /* headphone connected to HPOUTL, HPOUTR */
 153         {"Headphone Jack", NULL, "HPOUTL"},
 154         {"Headphone Jack", NULL, "HPOUTR"},
 155
 156         /* ext speaker connected to LOUT2, ROUT2 */
 157         {"Speaker", NULL, "LOUT2"},
 158         {"Speaker", NULL, "ROUT2"},
 159
 160         /* internal mic is connected to mic1, mic2 differential - with bias */
 161         {"MIC1", NULL, "Mic Bias"},
 162         {"MIC2", NULL, "Mic Bias"},
 163         {"Mic Bias", NULL, "Mic (Internal)"},
 164
 165         /* headset is connected to HPOUTR, and LINEINR with bias */
 166         {"Headset Jack", NULL, "HPOUTR"},
 167         {"LINEINR", NULL, "Mic Bias"},
 168         {"Mic Bias", NULL, "Headset Jack"},
 169 };
 170
 171 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
 172         "Off"};
 173 static const char *spk_function[] = {"On", "Off"};
 174 static const struct soc_enum tosa_enum[] = {
 175         SOC_ENUM_SINGLE_EXT(5, jack_function),
 176         SOC_ENUM_SINGLE_EXT(2, spk_function),
 177 };
 178
 179 static const struct snd_kcontrol_new tosa_controls[] = {
 180         SOC_ENUM_EXT("Jack Function", tosa_enum[0], tosa_get_jack,
 181                 tosa_set_jack),
 182         SOC_ENUM_EXT("Speaker Function", tosa_enum[1], tosa_get_spk,
 183                 tosa_set_spk),
 184 };
 185
 186 static int tosa_ac97_init(struct snd_soc_pcm_runtime *rtd)
 187 {
 188         struct snd_soc_codec *codec = rtd->codec;
 189         int err;
 190
 191         snd_soc_dapm_nc_pin(codec, "OUT3");
 192         snd_soc_dapm_nc_pin(codec, "MONOOUT");
 193
 194         /* add tosa specific controls */
 195         err = snd_soc_add_controls(codec, tosa_controls,
 196                                 ARRAY_SIZE(tosa_controls));
 197         if (err < 0)
 198                 return err;
 199
 200         /* add tosa specific widgets */
 201         snd_soc_dapm_new_controls(codec, tosa_dapm_widgets,
 202                                   ARRAY_SIZE(tosa_dapm_widgets));
 203
 204         /* set up tosa specific audio path audio_map */
 205         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 206
 207         snd_soc_dapm_sync(codec);
 208         return 0;
 209 }
 210
 211 static struct snd_soc_dai_link tosa_dai[] = {
 212 {
 213         .name = "AC97",
 214         .stream_name = "AC97 HiFi",
 215         .cpu_dai_name = "pxa-ac97.0",
 216         .codec_dai_name = "wm9712-hifi",
 217         .platform_name = "pxa-pcm-audio",
 218         .codec_name = "wm9712-codec",
 219         .init = tosa_ac97_init,
 220         .ops = &tosa_ops,
 221 },
 222 {
 223         .name = "AC97 Aux",
 224         .stream_name = "AC97 Aux",
 225         .cpu_dai_name = "pxa-ac97.1",
 226         .codec_dai_name = "wm9712-aux",
 227         .platform_name = "pxa-pcm-audio",
 228         .codec_name = "wm9712-codec",
 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         .dai_link = tosa_dai,
 256         .num_links = ARRAY_SIZE(tosa_dai),
 257         .probe = tosa_probe,
 258         .remove = tosa_remove,
 259 };
 260
 261 static struct platform_device *tosa_snd_device;
 262
 263 static int __init tosa_init(void)
 264 {
 265         int ret;
 266
 267         if (!machine_is_tosa())
 268                 return -ENODEV;
 269
 270         tosa_snd_device = platform_device_alloc("soc-audio", -1);
 271         if (!tosa_snd_device) {
 272                 ret = -ENOMEM;
 273                 goto err_alloc;
 274         }
 275
 276         platform_set_drvdata(tosa_snd_device, &tosa);
 277         ret = platform_device_add(tosa_snd_device);
 278
 279         if (!ret)
 280                 return 0;
 281
 282         platform_device_put(tosa_snd_device);
 283
 284 err_alloc:
 285         return ret;
 286 }
 287
 288 static void __exit tosa_exit(void)
 289 {
 290         platform_device_unregister(tosa_snd_device);
 291 }
 292
 293 module_init(tosa_init);
 294 module_exit(tosa_exit);
 295
 296 /* Module information */
 297 MODULE_AUTHOR("Richard Purdie");
 298 MODULE_DESCRIPTION("ALSA SoC Tosa");
 299 MODULE_LICENSE("GPL");