linux/sound/soc/pxa/tosa.c
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   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 *  Revision history
  16 *    30th Nov 2005   Initial version.
  17 *
  18 * GPIO's
  19 *  1 - Jack Insertion
  20 *  5 - Hookswitch (headset answer/hang up switch)
  21 *
  22 */
  23
  24#include <linux/module.h>
  25#include <linux/moduleparam.h>
  26#include <linux/device.h>
  27
  28#include <sound/driver.h>
  29#include <sound/core.h>
  30#include <sound/pcm.h>
  31#include <sound/soc.h>
  32#include <sound/soc-dapm.h>
  33
  34#include <asm/mach-types.h>
  35#include <asm/hardware/tmio.h>
  36#include <asm/arch/pxa-regs.h>
  37#include <asm/arch/hardware.h>
  38#include <asm/arch/audio.h>
  39#include <asm/arch/tosa.h>
  40
  41#include "../codecs/wm9712.h"
  42#include "pxa2xx-pcm.h"
  43#include "pxa2xx-ac97.h"
  44
  45static struct snd_soc_machine tosa;
  46
  47#define TOSA_HP        0
  48#define TOSA_MIC_INT   1
  49#define TOSA_HEADSET   2
  50#define TOSA_HP_OFF    3
  51#define TOSA_SPK_ON    0
  52#define TOSA_SPK_OFF   1
  53
  54static int tosa_jack_func;
  55static int tosa_spk_func;
  56
  57static void tosa_ext_control(struct snd_soc_codec *codec)
  58{
  59        int spk = 0, mic_int = 0, hp = 0, hs = 0;
  60
  61        /* set up jack connection */
  62        switch (tosa_jack_func) {
  63        case TOSA_HP:
  64                hp = 1;
  65                break;
  66        case TOSA_MIC_INT:
  67                mic_int = 1;
  68                break;
  69        case TOSA_HEADSET:
  70                hs = 1;
  71                break;
  72        }
  73
  74        if (tosa_spk_func == TOSA_SPK_ON)
  75                spk = 1;
  76
  77        snd_soc_dapm_set_endpoint(codec, "Speaker", spk);
  78        snd_soc_dapm_set_endpoint(codec, "Mic (Internal)", mic_int);
  79        snd_soc_dapm_set_endpoint(codec, "Headphone Jack", hp);
  80        snd_soc_dapm_set_endpoint(codec, "Headset Jack", hs);
  81        snd_soc_dapm_sync_endpoints(codec);
  82}
  83
  84static int tosa_startup(struct snd_pcm_substream *substream)
  85{
  86        struct snd_soc_pcm_runtime *rtd = substream->private_data;
  87        struct snd_soc_codec *codec = rtd->socdev->codec;
  88
  89        /* check the jack status at stream startup */
  90        tosa_ext_control(codec);
  91        return 0;
  92}
  93
  94static struct snd_soc_ops tosa_ops = {
  95        .startup = tosa_startup,
  96};
  97
  98static int tosa_get_jack(struct snd_kcontrol *kcontrol,
  99        struct snd_ctl_elem_value *ucontrol)
 100{
 101        ucontrol->value.integer.value[0] = tosa_jack_func;
 102        return 0;
 103}
 104
 105static int tosa_set_jack(struct snd_kcontrol *kcontrol,
 106        struct snd_ctl_elem_value *ucontrol)
 107{
 108        struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 109
 110        if (tosa_jack_func == ucontrol->value.integer.value[0])
 111                return 0;
 112
 113        tosa_jack_func = ucontrol->value.integer.value[0];
 114        tosa_ext_control(codec);
 115        return 1;
 116}
 117
 118static int tosa_get_spk(struct snd_kcontrol *kcontrol,
 119        struct snd_ctl_elem_value *ucontrol)
 120{
 121        ucontrol->value.integer.value[0] = tosa_spk_func;
 122        return 0;
 123}
 124
 125static int tosa_set_spk(struct snd_kcontrol *kcontrol,
 126        struct snd_ctl_elem_value *ucontrol)
 127{
 128        struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 129
 130        if (tosa_spk_func == ucontrol->value.integer.value[0])
 131                return 0;
 132
 133        tosa_spk_func = ucontrol->value.integer.value[0];
 134        tosa_ext_control(codec);
 135        return 1;
 136}
 137
 138/* tosa dapm event handlers */
 139static int tosa_hp_event(struct snd_soc_dapm_widget *w, int event)
 140{
 141        if (SND_SOC_DAPM_EVENT_ON(event))
 142                set_tc6393_gpio(&tc6393_device.dev,TOSA_TC6393_L_MUTE);
 143        else
 144                reset_tc6393_gpio(&tc6393_device.dev,TOSA_TC6393_L_MUTE);
 145        return 0;
 146}
 147
 148/* tosa machine dapm widgets */
 149static const struct snd_soc_dapm_widget tosa_dapm_widgets[] = {
 150SND_SOC_DAPM_HP("Headphone Jack", tosa_hp_event),
 151SND_SOC_DAPM_HP("Headset Jack", NULL),
 152SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
 153SND_SOC_DAPM_SPK("Speaker", NULL),
 154};
 155
 156/* tosa audio map */
 157static const char *audio_map[][3] = {
 158
 159        /* headphone connected to HPOUTL, HPOUTR */
 160        {"Headphone Jack", NULL, "HPOUTL"},
 161        {"Headphone Jack", NULL, "HPOUTR"},
 162
 163        /* ext speaker connected to LOUT2, ROUT2 */
 164        {"Speaker", NULL, "LOUT2"},
 165        {"Speaker", NULL, "ROUT2"},
 166
 167        /* internal mic is connected to mic1, mic2 differential - with bias */
 168        {"MIC1", NULL, "Mic Bias"},
 169        {"MIC2", NULL, "Mic Bias"},
 170        {"Mic Bias", NULL, "Mic (Internal)"},
 171
 172        /* headset is connected to HPOUTR, and LINEINR with bias */
 173        {"Headset Jack", NULL, "HPOUTR"},
 174        {"LINEINR", NULL, "Mic Bias"},
 175        {"Mic Bias", NULL, "Headset Jack"},
 176
 177        {NULL, NULL, NULL},
 178};
 179
 180static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
 181        "Off"};
 182static const char *spk_function[] = {"On", "Off"};
 183static const struct soc_enum tosa_enum[] = {
 184        SOC_ENUM_SINGLE_EXT(5, jack_function),
 185        SOC_ENUM_SINGLE_EXT(2, spk_function),
 186};
 187
 188static const struct snd_kcontrol_new tosa_controls[] = {
 189        SOC_ENUM_EXT("Jack Function", tosa_enum[0], tosa_get_jack,
 190                tosa_set_jack),
 191        SOC_ENUM_EXT("Speaker Function", tosa_enum[1], tosa_get_spk,
 192                tosa_set_spk),
 193};
 194
 195static int tosa_ac97_init(struct snd_soc_codec *codec)
 196{
 197        int i, err;
 198
 199        snd_soc_dapm_set_endpoint(codec, "OUT3", 0);
 200        snd_soc_dapm_set_endpoint(codec, "MONOOUT", 0);
 201
 202        /* add tosa specific controls */
 203        for (i = 0; i < ARRAY_SIZE(tosa_controls); i++) {
 204                err = snd_ctl_add(codec->card,
 205                                snd_soc_cnew(&tosa_controls[i],codec, NULL));
 206                if (err < 0)
 207                        return err;
 208        }
 209
 210        /* add tosa specific widgets */
 211        for (i = 0; i < ARRAY_SIZE(tosa_dapm_widgets); i++) {
 212                snd_soc_dapm_new_control(codec, &tosa_dapm_widgets[i]);
 213        }
 214
 215        /* set up tosa specific audio path audio_map */
 216        for (i = 0; audio_map[i][0] != NULL; i++) {
 217                snd_soc_dapm_connect_input(codec, audio_map[i][0],
 218                        audio_map[i][1], audio_map[i][2]);
 219        }
 220
 221        snd_soc_dapm_sync_endpoints(codec);
 222        return 0;
 223}
 224
 225static struct snd_soc_dai_link tosa_dai[] = {
 226{
 227        .name = "AC97",
 228        .stream_name = "AC97 HiFi",
 229        .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
 230        .codec_dai = &wm9712_dai[WM9712_DAI_AC97_HIFI],
 231        .init = tosa_ac97_init,
 232        .ops = &tosa_ops,
 233},
 234{
 235        .name = "AC97 Aux",
 236        .stream_name = "AC97 Aux",
 237        .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
 238        .codec_dai = &wm9712_dai[WM9712_DAI_AC97_AUX],
 239        .ops = &tosa_ops,
 240},
 241};
 242
 243static struct snd_soc_machine tosa = {
 244        .name = "Tosa",
 245        .dai_link = tosa_dai,
 246        .num_links = ARRAY_SIZE(tosa_dai),
 247};
 248
 249static struct snd_soc_device tosa_snd_devdata = {
 250        .machine = &tosa,
 251        .platform = &pxa2xx_soc_platform,
 252        .codec_dev = &soc_codec_dev_wm9712,
 253};
 254
 255static struct platform_device *tosa_snd_device;
 256
 257static int __init tosa_init(void)
 258{
 259        int ret;
 260
 261        if (!machine_is_tosa())
 262                return -ENODEV;
 263
 264        tosa_snd_device = platform_device_alloc("soc-audio", -1);
 265        if (!tosa_snd_device)
 266                return -ENOMEM;
 267
 268        platform_set_drvdata(tosa_snd_device, &tosa_snd_devdata);
 269        tosa_snd_devdata.dev = &tosa_snd_device->dev;
 270        ret = platform_device_add(tosa_snd_device);
 271
 272        if (ret)
 273                platform_device_put(tosa_snd_device);
 274
 275        return ret;
 276}
 277
 278static void __exit tosa_exit(void)
 279{
 280        platform_device_unregister(tosa_snd_device);
 281}
 282
 283module_init(tosa_init);
 284module_exit(tosa_exit);
 285
 286/* Module information */
 287MODULE_AUTHOR("Richard Purdie");
 288MODULE_DESCRIPTION("ALSA SoC Tosa");
 289MODULE_LICENSE("GPL");
 290