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/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 */
  62 static 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
  81 static 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 */
  90 static 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
 100 static 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
 127 static int mioa701_wm9713_init(struct snd_soc_pcm_runtime *rtd)
 128 {
 129         struct snd_soc_codec *codec = rtd->codec;
 130         struct snd_soc_dapm_context *dapm = &codec->dapm;
 131         unsigned short reg;
 132
 133         /* Add mioa701 specific widgets */
 134         snd_soc_dapm_new_controls(dapm, mioa701_dapm_widgets,
 135                                   ARRAY_SIZE(mioa701_dapm_widgets));
 136
 137         /* Set up mioa701 specific audio path audio_mapnects */
 138         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 139
 140         /* Prepare GPIO8 for rear speaker amplifier */
 141         reg = codec->driver->read(codec, AC97_GPIO_CFG);
 142         codec->driver->write(codec, AC97_GPIO_CFG, reg | 0x0100);
 143
 144         /* Prepare MIC input */
 145         reg = codec->driver->read(codec, AC97_3D_CONTROL);
 146         codec->driver->write(codec, AC97_3D_CONTROL, reg | 0xc000);
 147
 148         snd_soc_dapm_enable_pin(dapm, "Front Speaker");
 149         snd_soc_dapm_enable_pin(dapm, "Rear Speaker");
 150         snd_soc_dapm_enable_pin(dapm, "Front Mic");
 151         snd_soc_dapm_enable_pin(dapm, "GSM Line In");
 152         snd_soc_dapm_enable_pin(dapm, "GSM Line Out");
 153
 154         return 0;
 155 }
 156
 157 static struct snd_soc_ops mioa701_ops;
 158
 159 static struct snd_soc_dai_link mioa701_dai[] = {
 160         {
 161                 .name = "AC97",
 162                 .stream_name = "AC97 HiFi",
 163                 .cpu_dai_name = "pxa2xx-ac97",
 164                 .codec_dai_name = "wm9713-hifi",
 165                 .codec_name = "wm9713-codec",
 166                 .init = mioa701_wm9713_init,
 167                 .platform_name = "pxa-pcm-audio",
 168                 .ops = &mioa701_ops,
 169         },
 170         {
 171                 .name = "AC97 Aux",
 172                 .stream_name = "AC97 Aux",
 173                 .cpu_dai_name = "pxa2xx-ac97-aux",
 174                 .codec_dai_name ="wm9713-aux",
 175                 .codec_name = "wm9713-codec",
 176                 .platform_name = "pxa-pcm-audio",
 177                 .ops = &mioa701_ops,
 178         },
 179 };
 180
 181 static struct snd_soc_card mioa701 = {
 182         .name = "MioA701",
 183         .owner = THIS_MODULE,
 184         .dai_link = mioa701_dai,
 185         .num_links = ARRAY_SIZE(mioa701_dai),
 186 };
 187
 188 static int mioa701_wm9713_probe(struct platform_device *pdev)
 189 {
 190         int rc;
 191
 192         if (!machine_is_mioa701())
 193                 return -ENODEV;
 194
 195         mioa701.dev = &pdev->dev;
 196         rc =  snd_soc_register_card(&mioa701);
 197         if (!rc)
 198                 dev_warn(&pdev->dev, "Be warned that incorrect mixers/muxes setup will"
 199                          "lead to overheating and possible destruction of your device."
 200                          " Do not use without a good knowledge of mio's board design!\n");
 201         return rc;
 202 }
 203
 204 static int mioa701_wm9713_remove(struct platform_device *pdev)
 205 {
 206         struct snd_soc_card *card = platform_get_drvdata(pdev);
 207
 208         snd_soc_unregister_card(card);
 209         return 0;
 210 }
 211
 212 static struct platform_driver mioa701_wm9713_driver = {
 213         .probe          = mioa701_wm9713_probe,
 214         .remove         = mioa701_wm9713_remove,
 215         .driver         = {
 216                 .name           = "mioa701-wm9713",
 217                 .owner          = THIS_MODULE,
 218         },
 219 };
 220
 221 module_platform_driver(mioa701_wm9713_driver);
 222
 223 /* Module information */
 224 MODULE_AUTHOR("Robert Jarzmik (rjarzmik@free.fr)");
 225 MODULE_DESCRIPTION("ALSA SoC WM9713 MIO A701");
 226 MODULE_LICENSE("GPL");