LXR linux/sound/soc/pxa/mioa701

   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/soc-dapm.h>
  54#include <sound/initval.h>
  55#include <sound/ac97_codec.h>
  56
  57#include "pxa2xx-pcm.h"
  58#include "pxa2xx-ac97.h"
  59#include "../codecs/wm9713.h"
  60
  61#define ARRAY_AND_SIZE(x)       (x), ARRAY_SIZE(x)
  62
  63#define AC97_GPIO_PULL          0x58
  64
  65/* Use GPIO8 for rear speaker amplifier */
  66static int rear_amp_power(struct snd_soc_codec *codec, int power)
  67{
  68        unsigned short reg;
  69
  70        if (power) {
  71                reg = snd_soc_read(codec, AC97_GPIO_CFG);
  72                snd_soc_write(codec, AC97_GPIO_CFG, reg | 0x0100);
  73                reg = snd_soc_read(codec, AC97_GPIO_PULL);
  74                snd_soc_write(codec, AC97_GPIO_PULL, reg | (1<<15));
  75        } else {
  76                reg = snd_soc_read(codec, AC97_GPIO_CFG);
  77                snd_soc_write(codec, AC97_GPIO_CFG, reg & ~0x0100);
  78                reg = snd_soc_read(codec, AC97_GPIO_PULL);
  79                snd_soc_write(codec, AC97_GPIO_PULL, reg & ~(1<<15));
  80        }
  81
  82        return 0;
  83}
  84
  85static int rear_amp_event(struct snd_soc_dapm_widget *widget,
  86                          struct snd_kcontrol *kctl, int event)
  87{
  88        struct snd_soc_codec *codec = widget->codec;
  89
  90        return rear_amp_power(codec, SND_SOC_DAPM_EVENT_ON(event));
  91}
  92
  93/* mioa701 machine dapm widgets */
  94static const struct snd_soc_dapm_widget mioa701_dapm_widgets[] = {
  95        SND_SOC_DAPM_SPK("Front Speaker", NULL),
  96        SND_SOC_DAPM_SPK("Rear Speaker", rear_amp_event),
  97        SND_SOC_DAPM_MIC("Headset", NULL),
  98        SND_SOC_DAPM_LINE("GSM Line Out", NULL),
  99        SND_SOC_DAPM_LINE("GSM Line In", NULL),
 100        SND_SOC_DAPM_MIC("Headset Mic", NULL),
 101        SND_SOC_DAPM_MIC("Front Mic", NULL),
 102};
 103
 104static const struct snd_soc_dapm_route audio_map[] = {
 105        /* Call Mic */
 106        {"Mic Bias", NULL, "Front Mic"},
 107        {"MIC1", NULL, "Mic Bias"},
 108
 109        /* Headset Mic */
 110        {"LINEL", NULL, "Headset Mic"},
 111        {"LINER", NULL, "Headset Mic"},
 112
 113        /* GSM Module */
 114        {"MONOIN", NULL, "GSM Line Out"},
 115        {"PCBEEP", NULL, "GSM Line Out"},
 116        {"GSM Line In", NULL, "MONO"},
 117
 118        /* headphone connected to HPL, HPR */
 119        {"Headset", NULL, "HPL"},
 120        {"Headset", NULL, "HPR"},
 121
 122        /* front speaker connected to HPL, OUT3 */
 123        {"Front Speaker", NULL, "HPL"},
 124        {"Front Speaker", NULL, "OUT3"},
 125
 126        /* rear speaker connected to SPKL, SPKR */
 127        {"Rear Speaker", NULL, "SPKL"},
 128        {"Rear Speaker", NULL, "SPKR"},
 129};
 130
 131static int mioa701_wm9713_init(struct snd_soc_codec *codec)
 132{
 133        unsigned short reg;
 134
 135        /* Add mioa701 specific widgets */
 136        snd_soc_dapm_new_controls(codec, ARRAY_AND_SIZE(mioa701_dapm_widgets));
 137
 138        /* Set up mioa701 specific audio path audio_mapnects */
 139        snd_soc_dapm_add_routes(codec, ARRAY_AND_SIZE(audio_map));
 140
 141        /* Prepare GPIO8 for rear speaker amplifier */
 142        reg = codec->read(codec, AC97_GPIO_CFG);
 143        codec->write(codec, AC97_GPIO_CFG, reg | 0x0100);
 144
 145        /* Prepare MIC input */
 146        reg = codec->read(codec, AC97_3D_CONTROL);
 147        codec->write(codec, AC97_3D_CONTROL, reg | 0xc000);
 148
 149        snd_soc_dapm_enable_pin(codec, "Front Speaker");
 150        snd_soc_dapm_enable_pin(codec, "Rear Speaker");
 151        snd_soc_dapm_enable_pin(codec, "Front Mic");
 152        snd_soc_dapm_enable_pin(codec, "GSM Line In");
 153        snd_soc_dapm_enable_pin(codec, "GSM Line Out");
 154        snd_soc_dapm_sync(codec);
 155
 156        return 0;
 157}
 158
 159static struct snd_soc_ops mioa701_ops;
 160
 161static struct snd_soc_dai_link mioa701_dai[] = {
 162        {
 163                .name = "AC97",
 164                .stream_name = "AC97 HiFi",
 165                .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
 166                .codec_dai = &wm9713_dai[WM9713_DAI_AC97_HIFI],
 167                .init = mioa701_wm9713_init,
 168                .ops = &mioa701_ops,
 169        },
 170        {
 171                .name = "AC97 Aux",
 172                .stream_name = "AC97 Aux",
 173                .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
 174                .codec_dai = &wm9713_dai[WM9713_DAI_AC97_AUX],
 175                .ops = &mioa701_ops,
 176        },
 177};
 178
 179static struct snd_soc_card mioa701 = {
 180        .name = "MioA701",
 181        .platform = &pxa2xx_soc_platform,
 182        .dai_link = mioa701_dai,
 183        .num_links = ARRAY_SIZE(mioa701_dai),
 184};
 185
 186static struct snd_soc_device mioa701_snd_devdata = {
 187        .card = &mioa701,
 188        .codec_dev = &soc_codec_dev_wm9713,
 189};
 190
 191static struct platform_device *mioa701_snd_device;
 192
 193static int mioa701_wm9713_probe(struct platform_device *pdev)
 194{
 195        int ret;
 196
 197        if (!machine_is_mioa701())
 198                return -ENODEV;
 199
 200        dev_warn(&pdev->dev, "Be warned that incorrect mixers/muxes setup will"
 201                 "lead to overheating and possible destruction of your device."
 202                 "Do not use without a good knowledge of mio's board design!\n");
 203
 204        mioa701_snd_device = platform_device_alloc("soc-audio", -1);
 205        if (!mioa701_snd_device)
 206                return -ENOMEM;
 207
 208        platform_set_drvdata(mioa701_snd_device, &mioa701_snd_devdata);
 209        mioa701_snd_devdata.dev = &mioa701_snd_device->dev;
 210
 211        ret = platform_device_add(mioa701_snd_device);
 212        if (!ret)
 213                return 0;
 214
 215        platform_device_put(mioa701_snd_device);
 216        return ret;
 217}
 218
 219static int __devexit mioa701_wm9713_remove(struct platform_device *pdev)
 220{
 221        platform_device_unregister(mioa701_snd_device);
 222        return 0;
 223}
 224
 225static struct platform_driver mioa701_wm9713_driver = {
 226        .probe          = mioa701_wm9713_probe,
 227        .remove         = __devexit_p(mioa701_wm9713_remove),
 228        .driver         = {
 229                .name           = "mioa701-wm9713",
 230                .owner          = THIS_MODULE,
 231        },
 232};
 233
 234static int __init mioa701_asoc_init(void)
 235{
 236        return platform_driver_register(&mioa701_wm9713_driver);
 237}
 238
 239static void __exit mioa701_asoc_exit(void)
 240{
 241        platform_driver_unregister(&mioa701_wm9713_driver);
 242}
 243
 244module_init(mioa701_asoc_init);
 245module_exit(mioa701_asoc_exit);
 246
 247/* Module information */
 248MODULE_AUTHOR("Robert Jarzmik (rjarzmik@free.fr)");
 249MODULE_DESCRIPTION("ALSA SoC WM9713 MIO A701");
 250MODULE_LICENSE("GPL");
 251