linux/sound/soc/pxa/mioa701_wm9713.c
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   1/*
   2 * Handles the Mitac mioa701 SoC system
   3 *
   4 * Copyright (C) 2008 Robert Jarzmik
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation in version 2 of the License.
   9 *
  10 * This program is distributed in the hope that it will be useful,
  11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 * GNU General Public License for more details.
  14 *
  15 * You should have received a copy of the GNU General Public License
  16 * along with this program; if not, write to the Free Software
  17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18 *
  19 * This is a little schema of the sound interconnections :
  20 *
  21 *    Sagem X200                 Wolfson WM9713
  22 *    +--------+             +-------------------+      Rear Speaker
  23 *    |        |             |                   |           /-+
  24 *    |        +--->----->---+MONOIN         SPKL+--->----+-+  |
  25 *    |  GSM   |             |                   |        | |  |
  26 *    |        +--->----->---+PCBEEP         SPKR+--->----+-+  |
  27 *    |  CHIP  |             |                   |           \-+
  28 *    |        +---<-----<---+MONO               |
  29 *    |        |             |                   |      Front Speaker
  30 *    +--------+             |                   |           /-+
  31 *                           |                HPL+--->----+-+  |
  32 *                           |                   |        | |  |
  33 *                           |               OUT3+--->----+-+  |
  34 *                           |                   |           \-+
  35 *                           |                   |
  36 *                           |                   |     Front Micro
  37 *                           |                   |         +
  38 *                           |               MIC1+-----<--+o+
  39 *                           |                   |         +
  40 *                           +-------------------+        ---
  41 */
  42
  43#include <linux/module.h>
  44#include <linux/moduleparam.h>
  45#include <linux/platform_device.h>
  46
  47#include <asm/mach-types.h>
  48#include <mach/audio.h>
  49
  50#include <sound/core.h>
  51#include <sound/pcm.h>
  52#include <sound/soc.h>
  53#include <sound/initval.h>
  54#include <sound/ac97_codec.h>
  55
  56#include "pxa2xx-ac97.h"
  57#include "../codecs/wm9713.h"
  58
  59#define AC97_GPIO_PULL          0x58
  60
  61/* Use GPIO8 for rear speaker amplifier */
  62static int rear_amp_power(struct snd_soc_codec *codec, int power)
  63{
  64        unsigned short reg;
  65
  66        if (power) {
  67                reg = snd_soc_read(codec, AC97_GPIO_CFG);
  68                snd_soc_write(codec, AC97_GPIO_CFG, reg | 0x0100);
  69                reg = snd_soc_read(codec, AC97_GPIO_PULL);
  70                snd_soc_write(codec, AC97_GPIO_PULL, reg | (1<<15));
  71        } else {
  72                reg = snd_soc_read(codec, AC97_GPIO_CFG);
  73                snd_soc_write(codec, AC97_GPIO_CFG, reg & ~0x0100);
  74                reg = snd_soc_read(codec, AC97_GPIO_PULL);
  75                snd_soc_write(codec, AC97_GPIO_PULL, reg & ~(1<<15));
  76        }
  77
  78        return 0;
  79}
  80
  81static int rear_amp_event(struct snd_soc_dapm_widget *widget,
  82                          struct snd_kcontrol *kctl, int event)
  83{
  84        struct snd_soc_codec *codec = widget->codec;
  85
  86        return rear_amp_power(codec, SND_SOC_DAPM_EVENT_ON(event));
  87}
  88
  89/* mioa701 machine dapm widgets */
  90static const struct snd_soc_dapm_widget mioa701_dapm_widgets[] = {
  91        SND_SOC_DAPM_SPK("Front Speaker", NULL),
  92        SND_SOC_DAPM_SPK("Rear Speaker", rear_amp_event),
  93        SND_SOC_DAPM_MIC("Headset", NULL),
  94        SND_SOC_DAPM_LINE("GSM Line Out", NULL),
  95        SND_SOC_DAPM_LINE("GSM Line In", NULL),
  96        SND_SOC_DAPM_MIC("Headset Mic", NULL),
  97        SND_SOC_DAPM_MIC("Front Mic", NULL),
  98};
  99
 100static const struct snd_soc_dapm_route audio_map[] = {
 101        /* Call Mic */
 102        {"Mic Bias", NULL, "Front Mic"},
 103        {"MIC1", NULL, "Mic Bias"},
 104
 105        /* Headset Mic */
 106        {"LINEL", NULL, "Headset Mic"},
 107        {"LINER", NULL, "Headset Mic"},
 108
 109        /* GSM Module */
 110        {"MONOIN", NULL, "GSM Line Out"},
 111        {"PCBEEP", NULL, "GSM Line Out"},
 112        {"GSM Line In", NULL, "MONO"},
 113
 114        /* headphone connected to HPL, HPR */
 115        {"Headset", NULL, "HPL"},
 116        {"Headset", NULL, "HPR"},
 117
 118        /* front speaker connected to HPL, OUT3 */
 119        {"Front Speaker", NULL, "HPL"},
 120        {"Front Speaker", NULL, "OUT3"},
 121
 122        /* rear speaker connected to SPKL, SPKR */
 123        {"Rear Speaker", NULL, "SPKL"},
 124        {"Rear Speaker", NULL, "SPKR"},
 125};
 126
 127static int mioa701_wm9713_init(struct snd_soc_pcm_runtime *rtd)
 128{
 129        struct snd_soc_codec *codec = rtd->codec;
 130        unsigned short reg;
 131
 132        /* Prepare GPIO8 for rear speaker amplifier */
 133        reg = codec->driver->read(codec, AC97_GPIO_CFG);
 134        codec->driver->write(codec, AC97_GPIO_CFG, reg | 0x0100);
 135
 136        /* Prepare MIC input */
 137        reg = codec->driver->read(codec, AC97_3D_CONTROL);
 138        codec->driver->write(codec, AC97_3D_CONTROL, reg | 0xc000);
 139
 140        return 0;
 141}
 142
 143static struct snd_soc_ops mioa701_ops;
 144
 145static struct snd_soc_dai_link mioa701_dai[] = {
 146        {
 147                .name = "AC97",
 148                .stream_name = "AC97 HiFi",
 149                .cpu_dai_name = "pxa2xx-ac97",
 150                .codec_dai_name = "wm9713-hifi",
 151                .codec_name = "wm9713-codec",
 152                .init = mioa701_wm9713_init,
 153                .platform_name = "pxa-pcm-audio",
 154                .ops = &mioa701_ops,
 155        },
 156        {
 157                .name = "AC97 Aux",
 158                .stream_name = "AC97 Aux",
 159                .cpu_dai_name = "pxa2xx-ac97-aux",
 160                .codec_dai_name ="wm9713-aux",
 161                .codec_name = "wm9713-codec",
 162                .platform_name = "pxa-pcm-audio",
 163                .ops = &mioa701_ops,
 164        },
 165};
 166
 167static struct snd_soc_card mioa701 = {
 168        .name = "MioA701",
 169        .owner = THIS_MODULE,
 170        .dai_link = mioa701_dai,
 171        .num_links = ARRAY_SIZE(mioa701_dai),
 172
 173        .dapm_widgets = mioa701_dapm_widgets,
 174        .num_dapm_widgets = ARRAY_SIZE(mioa701_dapm_widgets),
 175        .dapm_routes = audio_map,
 176        .num_dapm_routes = ARRAY_SIZE(audio_map),
 177};
 178
 179static int mioa701_wm9713_probe(struct platform_device *pdev)
 180{
 181        int rc;
 182
 183        if (!machine_is_mioa701())
 184                return -ENODEV;
 185
 186        mioa701.dev = &pdev->dev;
 187        rc =  snd_soc_register_card(&mioa701);
 188        if (!rc)
 189                dev_warn(&pdev->dev, "Be warned that incorrect mixers/muxes setup will"
 190                         "lead to overheating and possible destruction of your device."
 191                         " Do not use without a good knowledge of mio's board design!\n");
 192        return rc;
 193}
 194
 195static int mioa701_wm9713_remove(struct platform_device *pdev)
 196{
 197        struct snd_soc_card *card = platform_get_drvdata(pdev);
 198
 199        snd_soc_unregister_card(card);
 200        return 0;
 201}
 202
 203static struct platform_driver mioa701_wm9713_driver = {
 204        .probe          = mioa701_wm9713_probe,
 205        .remove         = mioa701_wm9713_remove,
 206        .driver         = {
 207                .name           = "mioa701-wm9713",
 208                .owner          = THIS_MODULE,
 209                .pm     = &snd_soc_pm_ops,
 210        },
 211};
 212
 213module_platform_driver(mioa701_wm9713_driver);
 214
 215/* Module information */
 216MODULE_AUTHOR("Robert Jarzmik (rjarzmik@free.fr)");
 217MODULE_DESCRIPTION("ALSA SoC WM9713 MIO A701");
 218MODULE_LICENSE("GPL");
 219