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 "pxa2xx-ac97.h"
  35
  36 #define TOSA_HP        0
  37 #define TOSA_MIC_INT   1
  38 #define TOSA_HEADSET   2
  39 #define TOSA_HP_OFF    3
  40 #define TOSA_SPK_ON    0
  41 #define TOSA_SPK_OFF   1
  42
  43 static int tosa_jack_func;
  44 static int tosa_spk_func;
  45
  46 static void tosa_ext_control(struct snd_soc_dapm_context *dapm)
  47 {
  48
  49         snd_soc_dapm_mutex_lock(dapm);
  50
  51         /* set up jack connection */
  52         switch (tosa_jack_func) {
  53         case TOSA_HP:
  54                 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic (Internal)");
  55                 snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
  56                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
  57                 break;
  58         case TOSA_MIC_INT:
  59                 snd_soc_dapm_enable_pin_unlocked(dapm, "Mic (Internal)");
  60                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
  61                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
  62                 break;
  63         case TOSA_HEADSET:
  64                 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic (Internal)");
  65                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
  66                 snd_soc_dapm_enable_pin_unlocked(dapm, "Headset Jack");
  67                 break;
  68         }
  69
  70         if (tosa_spk_func == TOSA_SPK_ON)
  71                 snd_soc_dapm_enable_pin_unlocked(dapm, "Speaker");
  72         else
  73                 snd_soc_dapm_disable_pin_unlocked(dapm, "Speaker");
  74
  75         snd_soc_dapm_sync_unlocked(dapm);
  76
  77         snd_soc_dapm_mutex_unlock(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
  84         /* check the jack status at stream startup */
  85         tosa_ext_control(&rtd->card->dapm);
  86
  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.enumerated.item[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_card *card = snd_kcontrol_chip(kcontrol);
 105
 106         if (tosa_jack_func == ucontrol->value.enumerated.item[0])
 107                 return 0;
 108
 109         tosa_jack_func = ucontrol->value.enumerated.item[0];
 110         tosa_ext_control(&card->dapm);
 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.enumerated.item[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_card *card = snd_kcontrol_chip(kcontrol);
 125
 126         if (tosa_spk_func == ucontrol->value.enumerated.item[0])
 127                 return 0;
 128
 129         tosa_spk_func = ucontrol->value.enumerated.item[0];
 130         tosa_ext_control(&card->dapm);
 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 * const jack_function[] = {"Headphone", "Mic", "Line",
 173         "Headset", "Off"};
 174 static const char * const 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 struct snd_soc_dai_link tosa_dai[] = {
 188 {
 189         .name = "AC97",
 190         .stream_name = "AC97 HiFi",
 191         .cpu_dai_name = "pxa2xx-ac97",
 192         .codec_dai_name = "wm9712-hifi",
 193         .platform_name = "pxa-pcm-audio",
 194         .codec_name = "wm9712-codec",
 195         .ops = &tosa_ops,
 196 },
 197 {
 198         .name = "AC97 Aux",
 199         .stream_name = "AC97 Aux",
 200         .cpu_dai_name = "pxa2xx-ac97-aux",
 201         .codec_dai_name = "wm9712-aux",
 202         .platform_name = "pxa-pcm-audio",
 203         .codec_name = "wm9712-codec",
 204         .ops = &tosa_ops,
 205 },
 206 };
 207
 208 static struct snd_soc_card tosa = {
 209         .name = "Tosa",
 210         .owner = THIS_MODULE,
 211         .dai_link = tosa_dai,
 212         .num_links = ARRAY_SIZE(tosa_dai),
 213
 214         .controls = tosa_controls,
 215         .num_controls = ARRAY_SIZE(tosa_controls),
 216         .dapm_widgets = tosa_dapm_widgets,
 217         .num_dapm_widgets = ARRAY_SIZE(tosa_dapm_widgets),
 218         .dapm_routes = audio_map,
 219         .num_dapm_routes = ARRAY_SIZE(audio_map),
 220         .fully_routed = true,
 221 };
 222
 223 static int tosa_probe(struct platform_device *pdev)
 224 {
 225         struct snd_soc_card *card = &tosa;
 226         int ret;
 227
 228         ret = gpio_request_one(TOSA_GPIO_L_MUTE, GPIOF_OUT_INIT_LOW,
 229                                "Headphone Jack");
 230         if (ret)
 231                 return ret;
 232
 233         card->dev = &pdev->dev;
 234
 235         ret = devm_snd_soc_register_card(&pdev->dev, card);
 236         if (ret) {
 237                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 238                         ret);
 239                 gpio_free(TOSA_GPIO_L_MUTE);
 240         }
 241         return ret;
 242 }
 243
 244 static int tosa_remove(struct platform_device *pdev)
 245 {
 246         gpio_free(TOSA_GPIO_L_MUTE);
 247         return 0;
 248 }
 249
 250 static struct platform_driver tosa_driver = {
 251         .driver         = {
 252                 .name   = "tosa-audio",
 253                 .pm     = &snd_soc_pm_ops,
 254         },
 255         .probe          = tosa_probe,
 256         .remove         = tosa_remove,
 257 };
 258
 259 module_platform_driver(tosa_driver);
 260
 261 /* Module information */
 262 MODULE_AUTHOR("Richard Purdie");
 263 MODULE_DESCRIPTION("ALSA SoC Tosa");
 264 MODULE_LICENSE("GPL");
 265 MODULE_ALIAS("platform:tosa-audio");