sound/soc/pxa/mioa701_wm9713.c

   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-ac97.h"
  58 #include "../codecs/wm9713.h"
  59
  60 #define ARRAY_AND_SIZE(x)       (x), ARRAY_SIZE(x)
  61
  62 #define AC97_GPIO_PULL          0x58
  63
  64 /* Use GPIO8 for rear speaker amplifier */
  65 static int rear_amp_power(struct snd_soc_codec *codec, int power)
  66 {
  67         unsigned short reg;
  68
  69         if (power) {
  70                 reg = snd_soc_read(codec, AC97_GPIO_CFG);
  71                 snd_soc_write(codec, AC97_GPIO_CFG, reg | 0x0100);
  72                 reg = snd_soc_read(codec, AC97_GPIO_PULL);
  73                 snd_soc_write(codec, AC97_GPIO_PULL, reg | (1<<15));
  74         } else {
  75                 reg = snd_soc_read(codec, AC97_GPIO_CFG);
  76                 snd_soc_write(codec, AC97_GPIO_CFG, reg & ~0x0100);
  77                 reg = snd_soc_read(codec, AC97_GPIO_PULL);
  78                 snd_soc_write(codec, AC97_GPIO_PULL, reg & ~(1<<15));
  79         }
  80
  81         return 0;
  82 }
  83
  84 static int rear_amp_event(struct snd_soc_dapm_widget *widget,
  85                           struct snd_kcontrol *kctl, int event)
  86 {
  87         struct snd_soc_codec *codec = widget->codec;
  88
  89         return rear_amp_power(codec, SND_SOC_DAPM_EVENT_ON(event));
  90 }
  91
  92 /* mioa701 machine dapm widgets */
  93 static 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
 103 static 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
 130 static int mioa701_wm9713_init(struct snd_soc_pcm_runtime *rtd)
 131 {
 132         struct snd_soc_codec *codec = rtd->codec;
 133         struct snd_soc_dapm_context *dapm = &codec->dapm;
 134         unsigned short reg;
 135
 136         /* Add mioa701 specific widgets */
 137         snd_soc_dapm_new_controls(dapm, ARRAY_AND_SIZE(mioa701_dapm_widgets));
 138
 139         /* Set up mioa701 specific audio path audio_mapnects */
 140         snd_soc_dapm_add_routes(dapm, ARRAY_AND_SIZE(audio_map));
 141
 142         /* Prepare GPIO8 for rear speaker amplifier */
 143         reg = codec->driver->read(codec, AC97_GPIO_CFG);
 144         codec->driver->write(codec, AC97_GPIO_CFG, reg | 0x0100);
 145
 146         /* Prepare MIC input */
 147         reg = codec->driver->read(codec, AC97_3D_CONTROL);
 148         codec->driver->write(codec, AC97_3D_CONTROL, reg | 0xc000);
 149
 150         snd_soc_dapm_enable_pin(dapm, "Front Speaker");
 151         snd_soc_dapm_enable_pin(dapm, "Rear Speaker");
 152         snd_soc_dapm_enable_pin(dapm, "Front Mic");
 153         snd_soc_dapm_enable_pin(dapm, "GSM Line In");
 154         snd_soc_dapm_enable_pin(dapm, "GSM Line Out");
 155         snd_soc_dapm_sync(dapm);
 156
 157         return 0;
 158 }
 159
 160 static struct snd_soc_ops mioa701_ops;
 161
 162 static struct snd_soc_dai_link mioa701_dai[] = {
 163         {
 164                 .name = "AC97",
 165                 .stream_name = "AC97 HiFi",
 166                 .cpu_dai_name = "pxa-ac97.0",
 167                 .codec_dai_name = "wm9713-hifi",
 168                 .codec_name = "wm9713-codec",
 169                 .init = mioa701_wm9713_init,
 170                 .platform_name = "pxa-pcm-audio",
 171                 .ops = &mioa701_ops,
 172         },
 173         {
 174                 .name = "AC97 Aux",
 175                 .stream_name = "AC97 Aux",
 176                 .cpu_dai_name = "pxa-ac97.1",
 177                 .codec_dai_name ="wm9713-aux",
 178                 .codec_name = "wm9713-codec",
 179                 .platform_name = "pxa-pcm-audio",
 180                 .ops = &mioa701_ops,
 181         },
 182 };
 183
 184 static struct snd_soc_card mioa701 = {
 185         .name = "MioA701",
 186         .dai_link = mioa701_dai,
 187         .num_links = ARRAY_SIZE(mioa701_dai),
 188 };
 189
 190 static struct platform_device *mioa701_snd_device;
 191
 192 static int mioa701_wm9713_probe(struct platform_device *pdev)
 193 {
 194         int ret;
 195
 196         if (!machine_is_mioa701())
 197                 return -ENODEV;
 198
 199         dev_warn(&pdev->dev, "Be warned that incorrect mixers/muxes setup will"
 200                  "lead to overheating and possible destruction of your device."
 201                  "Do not use without a good knowledge of mio's board design!\n");
 202
 203         mioa701_snd_device = platform_device_alloc("soc-audio", -1);
 204         if (!mioa701_snd_device)
 205                 return -ENOMEM;
 206
 207         platform_set_drvdata(mioa701_snd_device, &mioa701);
 208
 209         ret = platform_device_add(mioa701_snd_device);
 210         if (!ret)
 211                 return 0;
 212
 213         platform_device_put(mioa701_snd_device);
 214         return ret;
 215 }
 216
 217 static int __devexit mioa701_wm9713_remove(struct platform_device *pdev)
 218 {
 219         platform_device_unregister(mioa701_snd_device);
 220         return 0;
 221 }
 222
 223 static struct platform_driver mioa701_wm9713_driver = {
 224         .probe          = mioa701_wm9713_probe,
 225         .remove         = __devexit_p(mioa701_wm9713_remove),
 226         .driver         = {
 227                 .name           = "mioa701-wm9713",
 228                 .owner          = THIS_MODULE,
 229         },
 230 };
 231
 232 static int __init mioa701_asoc_init(void)
 233 {
 234         return platform_driver_register(&mioa701_wm9713_driver);
 235 }
 236
 237 static void __exit mioa701_asoc_exit(void)
 238 {
 239         platform_driver_unregister(&mioa701_wm9713_driver);
 240 }
 241
 242 module_init(mioa701_asoc_init);
 243 module_exit(mioa701_asoc_exit);
 244
 245 /* Module information */
 246 MODULE_AUTHOR("Robert Jarzmik (rjarzmik@free.fr)");
 247 MODULE_DESCRIPTION("ALSA SoC WM9713 MIO A701");
 248 MODULE_LICENSE("GPL");