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