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
  30 #include <asm/mach-types.h>
  31 #include <mach/tosa.h>
  32 #include <mach/audio.h>
  33
  34 #include "../codecs/wm9712.h"
  35 #include "pxa2xx-ac97.h"
  36
  37 static struct snd_soc_card tosa;
  38
  39 #define TOSA_HP        0
  40 #define TOSA_MIC_INT   1
  41 #define TOSA_HEADSET   2
  42 #define TOSA_HP_OFF    3
  43 #define TOSA_SPK_ON    0
  44 #define TOSA_SPK_OFF   1
  45
  46 static int tosa_jack_func;
  47 static int tosa_spk_func;
  48
  49 static void tosa_ext_control(struct snd_soc_codec *codec)
  50 {
  51         struct snd_soc_dapm_context *dapm = &codec->dapm;
  52
  53         /* set up jack connection */
  54         switch (tosa_jack_func) {
  55         case TOSA_HP:
  56                 snd_soc_dapm_disable_pin(dapm, "Mic (Internal)");
  57                 snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
  58                 snd_soc_dapm_disable_pin(dapm, "Headset Jack");
  59                 break;
  60         case TOSA_MIC_INT:
  61                 snd_soc_dapm_enable_pin(dapm, "Mic (Internal)");
  62                 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
  63                 snd_soc_dapm_disable_pin(dapm, "Headset Jack");
  64                 break;
  65         case TOSA_HEADSET:
  66                 snd_soc_dapm_disable_pin(dapm, "Mic (Internal)");
  67                 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
  68                 snd_soc_dapm_enable_pin(dapm, "Headset Jack");
  69                 break;
  70         }
  71
  72         if (tosa_spk_func == TOSA_SPK_ON)
  73                 snd_soc_dapm_enable_pin(dapm, "Speaker");
  74         else
  75                 snd_soc_dapm_disable_pin(dapm, "Speaker");
  76
  77         snd_soc_dapm_sync(dapm);
  78 }
  79
  80 static int tosa_startup(struct snd_pcm_substream *substream)
  81 {
  82         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  83         struct snd_soc_codec *codec = rtd->codec;
  84
  85         mutex_lock(&codec->mutex);
  86
  87         /* check the jack status at stream startup */
  88         tosa_ext_control(codec);
  89
  90         mutex_unlock(&codec->mutex);
  91
  92         return 0;
  93 }
  94
  95 static struct snd_soc_ops tosa_ops = {
  96         .startup = tosa_startup,
  97 };
  98
  99 static int tosa_get_jack(struct snd_kcontrol *kcontrol,
 100         struct snd_ctl_elem_value *ucontrol)
 101 {
 102         ucontrol->value.integer.value[0] = tosa_jack_func;
 103         return 0;
 104 }
 105
 106 static int tosa_set_jack(struct snd_kcontrol *kcontrol,
 107         struct snd_ctl_elem_value *ucontrol)
 108 {
 109         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 110
 111         if (tosa_jack_func == ucontrol->value.integer.value[0])
 112                 return 0;
 113
 114         tosa_jack_func = ucontrol->value.integer.value[0];
 115         tosa_ext_control(codec);
 116         return 1;
 117 }
 118
 119 static int tosa_get_spk(struct snd_kcontrol *kcontrol,
 120         struct snd_ctl_elem_value *ucontrol)
 121 {
 122         ucontrol->value.integer.value[0] = tosa_spk_func;
 123         return 0;
 124 }
 125
 126 static int tosa_set_spk(struct snd_kcontrol *kcontrol,
 127         struct snd_ctl_elem_value *ucontrol)
 128 {
 129         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 130
 131         if (tosa_spk_func == ucontrol->value.integer.value[0])
 132                 return 0;
 133
 134         tosa_spk_func = ucontrol->value.integer.value[0];
 135         tosa_ext_control(codec);
 136         return 1;
 137 }
 138
 139 /* tosa dapm event handlers */
 140 static int tosa_hp_event(struct snd_soc_dapm_widget *w,
 141         struct snd_kcontrol *k, int event)
 142 {
 143         gpio_set_value(TOSA_GPIO_L_MUTE, SND_SOC_DAPM_EVENT_ON(event) ? 1 :0);
 144         return 0;
 145 }
 146
 147 /* tosa machine dapm widgets */
 148 static const struct snd_soc_dapm_widget tosa_dapm_widgets[] = {
 149 SND_SOC_DAPM_HP("Headphone Jack", tosa_hp_event),
 150 SND_SOC_DAPM_HP("Headset Jack", NULL),
 151 SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
 152 SND_SOC_DAPM_SPK("Speaker", NULL),
 153 };
 154
 155 /* tosa audio map */
 156 static const struct snd_soc_dapm_route audio_map[] = {
 157
 158         /* headphone connected to HPOUTL, HPOUTR */
 159         {"Headphone Jack", NULL, "HPOUTL"},
 160         {"Headphone Jack", NULL, "HPOUTR"},
 161
 162         /* ext speaker connected to LOUT2, ROUT2 */
 163         {"Speaker", NULL, "LOUT2"},
 164         {"Speaker", NULL, "ROUT2"},
 165
 166         /* internal mic is connected to mic1, mic2 differential - with bias */
 167         {"MIC1", NULL, "Mic Bias"},
 168         {"MIC2", NULL, "Mic Bias"},
 169         {"Mic Bias", NULL, "Mic (Internal)"},
 170
 171         /* headset is connected to HPOUTR, and LINEINR with bias */
 172         {"Headset Jack", NULL, "HPOUTR"},
 173         {"LINEINR", NULL, "Mic Bias"},
 174         {"Mic Bias", NULL, "Headset Jack"},
 175 };
 176
 177 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
 178         "Off"};
 179 static const char *spk_function[] = {"On", "Off"};
 180 static const struct soc_enum tosa_enum[] = {
 181         SOC_ENUM_SINGLE_EXT(5, jack_function),
 182         SOC_ENUM_SINGLE_EXT(2, spk_function),
 183 };
 184
 185 static const struct snd_kcontrol_new tosa_controls[] = {
 186         SOC_ENUM_EXT("Jack Function", tosa_enum[0], tosa_get_jack,
 187                 tosa_set_jack),
 188         SOC_ENUM_EXT("Speaker Function", tosa_enum[1], tosa_get_spk,
 189                 tosa_set_spk),
 190 };
 191
 192 static int tosa_ac97_init(struct snd_soc_pcm_runtime *rtd)
 193 {
 194         struct snd_soc_codec *codec = rtd->codec;
 195         struct snd_soc_dapm_context *dapm = &codec->dapm;
 196         int err;
 197
 198         snd_soc_dapm_nc_pin(dapm, "OUT3");
 199         snd_soc_dapm_nc_pin(dapm, "MONOOUT");
 200
 201         /* add tosa specific controls */
 202         err = snd_soc_add_controls(codec, tosa_controls,
 203                                 ARRAY_SIZE(tosa_controls));
 204         if (err < 0)
 205                 return err;
 206
 207         /* add tosa specific widgets */
 208         snd_soc_dapm_new_controls(dapm, tosa_dapm_widgets,
 209                                   ARRAY_SIZE(tosa_dapm_widgets));
 210
 211         /* set up tosa specific audio path audio_map */
 212         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 213
 214         snd_soc_dapm_sync(dapm);
 215         return 0;
 216 }
 217
 218 static struct snd_soc_dai_link tosa_dai[] = {
 219 {
 220         .name = "AC97",
 221         .stream_name = "AC97 HiFi",
 222         .cpu_dai_name = "pxa2xx-ac97",
 223         .codec_dai_name = "wm9712-hifi",
 224         .platform_name = "pxa-pcm-audio",
 225         .codec_name = "wm9712-codec",
 226         .init = tosa_ac97_init,
 227         .ops = &tosa_ops,
 228 },
 229 {
 230         .name = "AC97 Aux",
 231         .stream_name = "AC97 Aux",
 232         .cpu_dai_name = "pxa2xx-ac97-aux",
 233         .codec_dai_name = "wm9712-aux",
 234         .platform_name = "pxa-pcm-audio",
 235         .codec_name = "wm9712-codec",
 236         .ops = &tosa_ops,
 237 },
 238 };
 239
 240 static int tosa_probe(struct snd_soc_card *card)
 241 {
 242         int ret;
 243
 244         ret = gpio_request(TOSA_GPIO_L_MUTE, "Headphone Jack");
 245         if (ret)
 246                 return ret;
 247         ret = gpio_direction_output(TOSA_GPIO_L_MUTE, 0);
 248         if (ret)
 249                 gpio_free(TOSA_GPIO_L_MUTE);
 250
 251         return ret;
 252 }
 253
 254 static int tosa_remove(struct snd_soc_card *card)
 255 {
 256         gpio_free(TOSA_GPIO_L_MUTE);
 257         return 0;
 258 }
 259
 260 static struct snd_soc_card tosa = {
 261         .name = "Tosa",
 262         .dai_link = tosa_dai,
 263         .num_links = ARRAY_SIZE(tosa_dai),
 264         .probe = tosa_probe,
 265         .remove = tosa_remove,
 266 };
 267
 268 static struct platform_device *tosa_snd_device;
 269
 270 static int __init tosa_init(void)
 271 {
 272         int ret;
 273
 274         if (!machine_is_tosa())
 275                 return -ENODEV;
 276
 277         tosa_snd_device = platform_device_alloc("soc-audio", -1);
 278         if (!tosa_snd_device) {
 279                 ret = -ENOMEM;
 280                 goto err_alloc;
 281         }
 282
 283         platform_set_drvdata(tosa_snd_device, &tosa);
 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");