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 <liam.girdwood@wolfsonmicro.com>
   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 <asm/arch/tosa.h>
  33 #include <asm/arch/pxa-regs.h>
  34 #include <asm/arch/hardware.h>
  35 #include <asm/arch/audio.h>
  36 #include <asm/arch/tosa.h>
  37
  38 #include "../codecs/wm9712.h"
  39 #include "pxa2xx-pcm.h"
  40 #include "pxa2xx-ac97.h"
  41
  42 static struct snd_soc_machine tosa;
  43
  44 #define TOSA_HP        0
  45 #define TOSA_MIC_INT   1
  46 #define TOSA_HEADSET   2
  47 #define TOSA_HP_OFF    3
  48 #define TOSA_SPK_ON    0
  49 #define TOSA_SPK_OFF   1
  50
  51 static int tosa_jack_func;
  52 static int tosa_spk_func;
  53
  54 static void tosa_ext_control(struct snd_soc_codec *codec)
  55 {
  56         /* set up jack connection */
  57         switch (tosa_jack_func) {
  58         case TOSA_HP:
  59                 snd_soc_dapm_disable_pin(codec, "Mic (Internal)");
  60                 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
  61                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  62                 break;
  63         case TOSA_MIC_INT:
  64                 snd_soc_dapm_enable_pin(codec, "Mic (Internal)");
  65                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  66                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  67                 break;
  68         case TOSA_HEADSET:
  69                 snd_soc_dapm_disable_pin(codec, "Mic (Internal)");
  70                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  71                 snd_soc_dapm_enable_pin(codec, "Headset Jack");
  72                 break;
  73         }
  74
  75         if (tosa_spk_func == TOSA_SPK_ON)
  76                 snd_soc_dapm_enable_pin(codec, "Speaker");
  77         else
  78                 snd_soc_dapm_disable_pin(codec, "Speaker");
  79
  80         snd_soc_dapm_sync(codec);
  81 }
  82
  83 static int tosa_startup(struct snd_pcm_substream *substream)
  84 {
  85         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  86         struct snd_soc_codec *codec = rtd->socdev->codec;
  87
  88         /* check the jack status at stream startup */
  89         tosa_ext_control(codec);
  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_codec *codec)
 191 {
 192         int i, err;
 193
 194         snd_soc_dapm_disable_pin(codec, "OUT3");
 195         snd_soc_dapm_disable_pin(codec, "MONOOUT");
 196
 197         /* add tosa specific controls */
 198         for (i = 0; i < ARRAY_SIZE(tosa_controls); i++) {
 199                 err = snd_ctl_add(codec->card,
 200                                 snd_soc_cnew(&tosa_controls[i],codec, NULL));
 201                 if (err < 0)
 202                         return err;
 203         }
 204
 205         /* add tosa specific widgets */
 206         snd_soc_dapm_new_controls(codec, 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(codec, audio_map, ARRAY_SIZE(audio_map));
 211
 212         snd_soc_dapm_sync(codec);
 213         return 0;
 214 }
 215
 216 static struct snd_soc_dai_link tosa_dai[] = {
 217 {
 218         .name = "AC97",
 219         .stream_name = "AC97 HiFi",
 220         .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
 221         .codec_dai = &wm9712_dai[WM9712_DAI_AC97_HIFI],
 222         .init = tosa_ac97_init,
 223         .ops = &tosa_ops,
 224 },
 225 {
 226         .name = "AC97 Aux",
 227         .stream_name = "AC97 Aux",
 228         .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
 229         .codec_dai = &wm9712_dai[WM9712_DAI_AC97_AUX],
 230         .ops = &tosa_ops,
 231 },
 232 };
 233
 234 static struct snd_soc_machine tosa = {
 235         .name = "Tosa",
 236         .dai_link = tosa_dai,
 237         .num_links = ARRAY_SIZE(tosa_dai),
 238 };
 239
 240 static struct snd_soc_device tosa_snd_devdata = {
 241         .machine = &tosa,
 242         .platform = &pxa2xx_soc_platform,
 243         .codec_dev = &soc_codec_dev_wm9712,
 244 };
 245
 246 static struct platform_device *tosa_snd_device;
 247
 248 static int __init tosa_init(void)
 249 {
 250         int ret;
 251
 252         if (!machine_is_tosa())
 253                 return -ENODEV;
 254
 255         ret = gpio_request(TOSA_GPIO_L_MUTE, "Headphone Jack");
 256         if (ret)
 257                 return ret;
 258         gpio_direction_output(TOSA_GPIO_L_MUTE, 0);
 259
 260         tosa_snd_device = platform_device_alloc("soc-audio", -1);
 261         if (!tosa_snd_device) {
 262                 ret = -ENOMEM;
 263                 goto err_alloc;
 264         }
 265
 266         platform_set_drvdata(tosa_snd_device, &tosa_snd_devdata);
 267         tosa_snd_devdata.dev = &tosa_snd_device->dev;
 268         ret = platform_device_add(tosa_snd_device);
 269
 270         if (!ret)
 271                 return 0;
 272
 273         platform_device_put(tosa_snd_device);
 274
 275 err_alloc:
 276         gpio_free(TOSA_GPIO_L_MUTE);
 277
 278         return ret;
 279 }
 280
 281 static void __exit tosa_exit(void)
 282 {
 283         platform_device_unregister(tosa_snd_device);
 284         gpio_free(TOSA_GPIO_L_MUTE);
 285 }
 286
 287 module_init(tosa_init);
 288 module_exit(tosa_exit);
 289
 290 /* Module information */
 291 MODULE_AUTHOR("Richard Purdie");
 292 MODULE_DESCRIPTION("ALSA SoC Tosa");
 293 MODULE_LICENSE("GPL");