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->dapm->card->rtd[0].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
 131         /* Prepare GPIO8 for rear speaker amplifier */
 132         snd_soc_update_bits(codec, AC97_GPIO_CFG, 0x100, 0x100);
 133
 134         /* Prepare MIC input */
 135         snd_soc_update_bits(codec, AC97_3D_CONTROL, 0xc000, 0xc000);
 136
 137         return 0;
 138 }
 139
 140 static struct snd_soc_ops mioa701_ops;
 141
 142 static struct snd_soc_dai_link mioa701_dai[] = {
 143         {
 144                 .name = "AC97",
 145                 .stream_name = "AC97 HiFi",
 146                 .cpu_dai_name = "pxa2xx-ac97",
 147                 .codec_dai_name = "wm9713-hifi",
 148                 .codec_name = "wm9713-codec",
 149                 .init = mioa701_wm9713_init,
 150                 .platform_name = "pxa-pcm-audio",
 151                 .ops = &mioa701_ops,
 152         },
 153         {
 154                 .name = "AC97 Aux",
 155                 .stream_name = "AC97 Aux",
 156                 .cpu_dai_name = "pxa2xx-ac97-aux",
 157                 .codec_dai_name ="wm9713-aux",
 158                 .codec_name = "wm9713-codec",
 159                 .platform_name = "pxa-pcm-audio",
 160                 .ops = &mioa701_ops,
 161         },
 162 };
 163
 164 static struct snd_soc_card mioa701 = {
 165         .name = "MioA701",
 166         .owner = THIS_MODULE,
 167         .dai_link = mioa701_dai,
 168         .num_links = ARRAY_SIZE(mioa701_dai),
 169
 170         .dapm_widgets = mioa701_dapm_widgets,
 171         .num_dapm_widgets = ARRAY_SIZE(mioa701_dapm_widgets),
 172         .dapm_routes = audio_map,
 173         .num_dapm_routes = ARRAY_SIZE(audio_map),
 174 };
 175
 176 static int mioa701_wm9713_probe(struct platform_device *pdev)
 177 {
 178         int rc;
 179
 180         if (!machine_is_mioa701())
 181                 return -ENODEV;
 182
 183         mioa701.dev = &pdev->dev;
 184         rc = devm_snd_soc_register_card(&pdev->dev, &mioa701);
 185         if (!rc)
 186                 dev_warn(&pdev->dev, "Be warned that incorrect mixers/muxes setup will"
 187                          "lead to overheating and possible destruction of your device."
 188                          " Do not use without a good knowledge of mio's board design!\n");
 189         return rc;
 190 }
 191
 192 static struct platform_driver mioa701_wm9713_driver = {
 193         .probe          = mioa701_wm9713_probe,
 194         .driver         = {
 195                 .name           = "mioa701-wm9713",
 196                 .pm     = &snd_soc_pm_ops,
 197         },
 198 };
 199
 200 module_platform_driver(mioa701_wm9713_driver);
 201
 202 /* Module information */
 203 MODULE_AUTHOR("Robert Jarzmik (rjarzmik@free.fr)");
 204 MODULE_DESCRIPTION("ALSA SoC WM9713 MIO A701");
 205 MODULE_LICENSE("GPL");