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