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Linux/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                 .pm     = &snd_soc_pm_ops,
219         },
220 };
221 
222 module_platform_driver(mioa701_wm9713_driver);
223 
224 /* Module information */
225 MODULE_AUTHOR("Robert Jarzmik (rjarzmik@free.fr)");
226 MODULE_DESCRIPTION("ALSA SoC WM9713 MIO A701");
227 MODULE_LICENSE("GPL");
228 

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