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-pcm.h"
  37 #include "pxa2xx-ac97.h"
  38
  39 static struct snd_soc_card tosa;
  40
  41 #define TOSA_HP        0
  42 #define TOSA_MIC_INT   1
  43 #define TOSA_HEADSET   2
  44 #define TOSA_HP_OFF    3
  45 #define TOSA_SPK_ON    0
  46 #define TOSA_SPK_OFF   1
  47
  48 static int tosa_jack_func;
  49 static int tosa_spk_func;
  50
  51 static void tosa_ext_control(struct snd_soc_codec *codec)
  52 {
  53         /* set up jack connection */
  54         switch (tosa_jack_func) {
  55         case TOSA_HP:
  56                 snd_soc_dapm_disable_pin(codec, "Mic (Internal)");
  57                 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
  58                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  59                 break;
  60         case TOSA_MIC_INT:
  61                 snd_soc_dapm_enable_pin(codec, "Mic (Internal)");
  62                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  63                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  64                 break;
  65         case TOSA_HEADSET:
  66                 snd_soc_dapm_disable_pin(codec, "Mic (Internal)");
  67                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  68                 snd_soc_dapm_enable_pin(codec, "Headset Jack");
  69                 break;
  70         }
  71
  72         if (tosa_spk_func == TOSA_SPK_ON)
  73                 snd_soc_dapm_enable_pin(codec, "Speaker");
  74         else
  75                 snd_soc_dapm_disable_pin(codec, "Speaker");
  76
  77         snd_soc_dapm_sync(codec);
  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->socdev->card->codec;
  84
  85         /* check the jack status at stream startup */
  86         tosa_ext_control(codec);
  87         return 0;
  88 }
  89
  90 static struct snd_soc_ops tosa_ops = {
  91         .startup = tosa_startup,
  92 };
  93
  94 static int tosa_get_jack(struct snd_kcontrol *kcontrol,
  95         struct snd_ctl_elem_value *ucontrol)
  96 {
  97         ucontrol->value.integer.value[0] = tosa_jack_func;
  98         return 0;
  99 }
 100
 101 static int tosa_set_jack(struct snd_kcontrol *kcontrol,
 102         struct snd_ctl_elem_value *ucontrol)
 103 {
 104         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 105
 106         if (tosa_jack_func == ucontrol->value.integer.value[0])
 107                 return 0;
 108
 109         tosa_jack_func = ucontrol->value.integer.value[0];
 110         tosa_ext_control(codec);
 111         return 1;
 112 }
 113
 114 static int tosa_get_spk(struct snd_kcontrol *kcontrol,
 115         struct snd_ctl_elem_value *ucontrol)
 116 {
 117         ucontrol->value.integer.value[0] = tosa_spk_func;
 118         return 0;
 119 }
 120
 121 static int tosa_set_spk(struct snd_kcontrol *kcontrol,
 122         struct snd_ctl_elem_value *ucontrol)
 123 {
 124         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 125
 126         if (tosa_spk_func == ucontrol->value.integer.value[0])
 127                 return 0;
 128
 129         tosa_spk_func = ucontrol->value.integer.value[0];
 130         tosa_ext_control(codec);
 131         return 1;
 132 }
 133
 134 /* tosa dapm event handlers */
 135 static int tosa_hp_event(struct snd_soc_dapm_widget *w,
 136         struct snd_kcontrol *k, int event)
 137 {
 138         gpio_set_value(TOSA_GPIO_L_MUTE, SND_SOC_DAPM_EVENT_ON(event) ? 1 :0);
 139         return 0;
 140 }
 141
 142 /* tosa machine dapm widgets */
 143 static const struct snd_soc_dapm_widget tosa_dapm_widgets[] = {
 144 SND_SOC_DAPM_HP("Headphone Jack", tosa_hp_event),
 145 SND_SOC_DAPM_HP("Headset Jack", NULL),
 146 SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
 147 SND_SOC_DAPM_SPK("Speaker", NULL),
 148 };
 149
 150 /* tosa audio map */
 151 static const struct snd_soc_dapm_route audio_map[] = {
 152
 153         /* headphone connected to HPOUTL, HPOUTR */
 154         {"Headphone Jack", NULL, "HPOUTL"},
 155         {"Headphone Jack", NULL, "HPOUTR"},
 156
 157         /* ext speaker connected to LOUT2, ROUT2 */
 158         {"Speaker", NULL, "LOUT2"},
 159         {"Speaker", NULL, "ROUT2"},
 160
 161         /* internal mic is connected to mic1, mic2 differential - with bias */
 162         {"MIC1", NULL, "Mic Bias"},
 163         {"MIC2", NULL, "Mic Bias"},
 164         {"Mic Bias", NULL, "Mic (Internal)"},
 165
 166         /* headset is connected to HPOUTR, and LINEINR with bias */
 167         {"Headset Jack", NULL, "HPOUTR"},
 168         {"LINEINR", NULL, "Mic Bias"},
 169         {"Mic Bias", NULL, "Headset Jack"},
 170 };
 171
 172 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
 173         "Off"};
 174 static const char *spk_function[] = {"On", "Off"};
 175 static const struct soc_enum tosa_enum[] = {
 176         SOC_ENUM_SINGLE_EXT(5, jack_function),
 177         SOC_ENUM_SINGLE_EXT(2, spk_function),
 178 };
 179
 180 static const struct snd_kcontrol_new tosa_controls[] = {
 181         SOC_ENUM_EXT("Jack Function", tosa_enum[0], tosa_get_jack,
 182                 tosa_set_jack),
 183         SOC_ENUM_EXT("Speaker Function", tosa_enum[1], tosa_get_spk,
 184                 tosa_set_spk),
 185 };
 186
 187 static int tosa_ac97_init(struct snd_soc_codec *codec)
 188 {
 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 = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
 216         .codec_dai = &wm9712_dai[WM9712_DAI_AC97_HIFI],
 217         .init = tosa_ac97_init,
 218         .ops = &tosa_ops,
 219 },
 220 {
 221         .name = "AC97 Aux",
 222         .stream_name = "AC97 Aux",
 223         .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
 224         .codec_dai = &wm9712_dai[WM9712_DAI_AC97_AUX],
 225         .ops = &tosa_ops,
 226 },
 227 };
 228
 229 static int tosa_probe(struct platform_device *dev)
 230 {
 231         int ret;
 232
 233         ret = gpio_request(TOSA_GPIO_L_MUTE, "Headphone Jack");
 234         if (ret)
 235                 return ret;
 236         ret = gpio_direction_output(TOSA_GPIO_L_MUTE, 0);
 237         if (ret)
 238                 gpio_free(TOSA_GPIO_L_MUTE);
 239
 240         return ret;
 241 }
 242
 243 static int tosa_remove(struct platform_device *dev)
 244 {
 245         gpio_free(TOSA_GPIO_L_MUTE);
 246         return 0;
 247 }
 248
 249 static struct snd_soc_card tosa = {
 250         .name = "Tosa",
 251         .platform = &pxa2xx_soc_platform,
 252         .dai_link = tosa_dai,
 253         .num_links = ARRAY_SIZE(tosa_dai),
 254         .probe = tosa_probe,
 255         .remove = tosa_remove,
 256 };
 257
 258 static struct snd_soc_device tosa_snd_devdata = {
 259         .card = &tosa,
 260         .codec_dev = &soc_codec_dev_wm9712,
 261 };
 262
 263 static struct platform_device *tosa_snd_device;
 264
 265 static int __init tosa_init(void)
 266 {
 267         int ret;
 268
 269         if (!machine_is_tosa())
 270                 return -ENODEV;
 271
 272         tosa_snd_device = platform_device_alloc("soc-audio", -1);
 273         if (!tosa_snd_device) {
 274                 ret = -ENOMEM;
 275                 goto err_alloc;
 276         }
 277
 278         platform_set_drvdata(tosa_snd_device, &tosa_snd_devdata);
 279         tosa_snd_devdata.dev = &tosa_snd_device->dev;
 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");