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_dapm_context *dapm)
  48 {
  49
  50         snd_soc_dapm_mutex_lock(dapm);
  51
  52         /* set up jack connection */
  53         switch (tosa_jack_func) {
  54         case TOSA_HP:
  55                 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic (Internal)");
  56                 snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
  57                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
  58                 break;
  59         case TOSA_MIC_INT:
  60                 snd_soc_dapm_enable_pin_unlocked(dapm, "Mic (Internal)");
  61                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
  62                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
  63                 break;
  64         case TOSA_HEADSET:
  65                 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic (Internal)");
  66                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
  67                 snd_soc_dapm_enable_pin_unlocked(dapm, "Headset Jack");
  68                 break;
  69         }
  70
  71         if (tosa_spk_func == TOSA_SPK_ON)
  72                 snd_soc_dapm_enable_pin_unlocked(dapm, "Speaker");
  73         else
  74                 snd_soc_dapm_disable_pin_unlocked(dapm, "Speaker");
  75
  76         snd_soc_dapm_sync_unlocked(dapm);
  77
  78         snd_soc_dapm_mutex_unlock(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
  85         /* check the jack status at stream startup */
  86         tosa_ext_control(&rtd->card->dapm);
  87
  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.enumerated.item[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_card *card = snd_kcontrol_chip(kcontrol);
 106
 107         if (tosa_jack_func == ucontrol->value.enumerated.item[0])
 108                 return 0;
 109
 110         tosa_jack_func = ucontrol->value.enumerated.item[0];
 111         tosa_ext_control(&card->dapm);
 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.enumerated.item[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_card *card = snd_kcontrol_chip(kcontrol);
 126
 127         if (tosa_spk_func == ucontrol->value.enumerated.item[0])
 128                 return 0;
 129
 130         tosa_spk_func = ucontrol->value.enumerated.item[0];
 131         tosa_ext_control(&card->dapm);
 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 struct snd_soc_dai_link tosa_dai[] = {
 189 {
 190         .name = "AC97",
 191         .stream_name = "AC97 HiFi",
 192         .cpu_dai_name = "pxa2xx-ac97",
 193         .codec_dai_name = "wm9712-hifi",
 194         .platform_name = "pxa-pcm-audio",
 195         .codec_name = "wm9712-codec",
 196         .ops = &tosa_ops,
 197 },
 198 {
 199         .name = "AC97 Aux",
 200         .stream_name = "AC97 Aux",
 201         .cpu_dai_name = "pxa2xx-ac97-aux",
 202         .codec_dai_name = "wm9712-aux",
 203         .platform_name = "pxa-pcm-audio",
 204         .codec_name = "wm9712-codec",
 205         .ops = &tosa_ops,
 206 },
 207 };
 208
 209 static struct snd_soc_card tosa = {
 210         .name = "Tosa",
 211         .owner = THIS_MODULE,
 212         .dai_link = tosa_dai,
 213         .num_links = ARRAY_SIZE(tosa_dai),
 214
 215         .controls = tosa_controls,
 216         .num_controls = ARRAY_SIZE(tosa_controls),
 217         .dapm_widgets = tosa_dapm_widgets,
 218         .num_dapm_widgets = ARRAY_SIZE(tosa_dapm_widgets),
 219         .dapm_routes = audio_map,
 220         .num_dapm_routes = ARRAY_SIZE(audio_map),
 221         .fully_routed = true,
 222 };
 223
 224 static int tosa_probe(struct platform_device *pdev)
 225 {
 226         struct snd_soc_card *card = &tosa;
 227         int ret;
 228
 229         ret = gpio_request_one(TOSA_GPIO_L_MUTE, GPIOF_OUT_INIT_LOW,
 230                                "Headphone Jack");
 231         if (ret)
 232                 return ret;
 233
 234         card->dev = &pdev->dev;
 235
 236         ret = devm_snd_soc_register_card(&pdev->dev, card);
 237         if (ret) {
 238                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 239                         ret);
 240                 gpio_free(TOSA_GPIO_L_MUTE);
 241         }
 242         return ret;
 243 }
 244
 245 static int tosa_remove(struct platform_device *pdev)
 246 {
 247         gpio_free(TOSA_GPIO_L_MUTE);
 248         return 0;
 249 }
 250
 251 static struct platform_driver tosa_driver = {
 252         .driver         = {
 253                 .name   = "tosa-audio",
 254                 .pm     = &snd_soc_pm_ops,
 255         },
 256         .probe          = tosa_probe,
 257         .remove         = tosa_remove,
 258 };
 259
 260 module_platform_driver(tosa_driver);
 261
 262 /* Module information */
 263 MODULE_AUTHOR("Richard Purdie");
 264 MODULE_DESCRIPTION("ALSA SoC Tosa");
 265 MODULE_LICENSE("GPL");
 266 MODULE_ALIAS("platform:tosa-audio");