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 "../codecs/wm9713.h"
  57
  58#define AC97_GPIO_PULL          0x58
  59
  60/* Use GPIO8 for rear speaker amplifier */
  61static int rear_amp_power(struct snd_soc_component *component, int power)
  62{
  63        unsigned short reg;
  64
  65        if (power) {
  66                reg = snd_soc_component_read32(component, AC97_GPIO_CFG);
  67                snd_soc_component_write(component, AC97_GPIO_CFG, reg | 0x0100);
  68                reg = snd_soc_component_read32(component, AC97_GPIO_PULL);
  69                snd_soc_component_write(component, AC97_GPIO_PULL, reg | (1<<15));
  70        } else {
  71                reg = snd_soc_component_read32(component, AC97_GPIO_CFG);
  72                snd_soc_component_write(component, AC97_GPIO_CFG, reg & ~0x0100);
  73                reg = snd_soc_component_read32(component, AC97_GPIO_PULL);
  74                snd_soc_component_write(component, AC97_GPIO_PULL, reg & ~(1<<15));
  75        }
  76
  77        return 0;
  78}
  79
  80static int rear_amp_event(struct snd_soc_dapm_widget *widget,
  81                          struct snd_kcontrol *kctl, int event)
  82{
  83        struct snd_soc_card *card = widget->dapm->card;
  84        struct snd_soc_pcm_runtime *rtd;
  85        struct snd_soc_component *component;
  86
  87        rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
  88        component = rtd->codec_dai->component;
  89        return rear_amp_power(component, SND_SOC_DAPM_EVENT_ON(event));
  90}
  91
  92/* mioa701 machine dapm widgets */
  93static const struct snd_soc_dapm_widget mioa701_dapm_widgets[] = {
  94        SND_SOC_DAPM_SPK("Front Speaker", NULL),
  95        SND_SOC_DAPM_SPK("Rear Speaker", rear_amp_event),
  96        SND_SOC_DAPM_MIC("Headset", NULL),
  97        SND_SOC_DAPM_LINE("GSM Line Out", NULL),
  98        SND_SOC_DAPM_LINE("GSM Line In", NULL),
  99        SND_SOC_DAPM_MIC("Headset Mic", NULL),
 100        SND_SOC_DAPM_MIC("Front Mic", NULL),
 101};
 102
 103static const struct snd_soc_dapm_route audio_map[] = {
 104        /* Call Mic */
 105        {"Mic Bias", NULL, "Front Mic"},
 106        {"MIC1", NULL, "Mic Bias"},
 107
 108        /* Headset Mic */
 109        {"LINEL", NULL, "Headset Mic"},
 110        {"LINER", NULL, "Headset Mic"},
 111
 112        /* GSM Module */
 113        {"MONOIN", NULL, "GSM Line Out"},
 114        {"PCBEEP", NULL, "GSM Line Out"},
 115        {"GSM Line In", NULL, "MONO"},
 116
 117        /* headphone connected to HPL, HPR */
 118        {"Headset", NULL, "HPL"},
 119        {"Headset", NULL, "HPR"},
 120
 121        /* front speaker connected to HPL, OUT3 */
 122        {"Front Speaker", NULL, "HPL"},
 123        {"Front Speaker", NULL, "OUT3"},
 124
 125        /* rear speaker connected to SPKL, SPKR */
 126        {"Rear Speaker", NULL, "SPKL"},
 127        {"Rear Speaker", NULL, "SPKR"},
 128};
 129
 130static int mioa701_wm9713_init(struct snd_soc_pcm_runtime *rtd)
 131{
 132        struct snd_soc_component *component = rtd->codec_dai->component;
 133
 134        /* Prepare GPIO8 for rear speaker amplifier */
 135        snd_soc_component_update_bits(component, AC97_GPIO_CFG, 0x100, 0x100);
 136
 137        /* Prepare MIC input */
 138        snd_soc_component_update_bits(component, AC97_3D_CONTROL, 0xc000, 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 = devm_snd_soc_register_card(&pdev->dev, &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 struct platform_driver mioa701_wm9713_driver = {
 196        .probe          = mioa701_wm9713_probe,
 197        .driver         = {
 198                .name           = "mioa701-wm9713",
 199                .pm     = &snd_soc_pm_ops,
 200        },
 201};
 202
 203module_platform_driver(mioa701_wm9713_driver);
 204
 205/* Module information */
 206MODULE_AUTHOR("Robert Jarzmik (rjarzmik@free.fr)");
 207MODULE_DESCRIPTION("ALSA SoC WM9713 MIO A701");
 208MODULE_LICENSE("GPL");
 209MODULE_ALIAS("platform:mioa701-wm9713");
 210