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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_card *card = widget->dapm->card;
 85         struct snd_soc_pcm_runtime *rtd;
 86         struct snd_soc_codec *codec;
 87 
 88         rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
 89         codec = rtd->codec;
 90         return rear_amp_power(codec, SND_SOC_DAPM_EVENT_ON(event));
 91 }
 92 
 93 /* mioa701 machine dapm widgets */
 94 static const struct snd_soc_dapm_widget mioa701_dapm_widgets[] = {
 95         SND_SOC_DAPM_SPK("Front Speaker", NULL),
 96         SND_SOC_DAPM_SPK("Rear Speaker", rear_amp_event),
 97         SND_SOC_DAPM_MIC("Headset", NULL),
 98         SND_SOC_DAPM_LINE("GSM Line Out", NULL),
 99         SND_SOC_DAPM_LINE("GSM Line In", NULL),
100         SND_SOC_DAPM_MIC("Headset Mic", NULL),
101         SND_SOC_DAPM_MIC("Front Mic", NULL),
102 };
103 
104 static const struct snd_soc_dapm_route audio_map[] = {
105         /* Call Mic */
106         {"Mic Bias", NULL, "Front Mic"},
107         {"MIC1", NULL, "Mic Bias"},
108 
109         /* Headset Mic */
110         {"LINEL", NULL, "Headset Mic"},
111         {"LINER", NULL, "Headset Mic"},
112 
113         /* GSM Module */
114         {"MONOIN", NULL, "GSM Line Out"},
115         {"PCBEEP", NULL, "GSM Line Out"},
116         {"GSM Line In", NULL, "MONO"},
117 
118         /* headphone connected to HPL, HPR */
119         {"Headset", NULL, "HPL"},
120         {"Headset", NULL, "HPR"},
121 
122         /* front speaker connected to HPL, OUT3 */
123         {"Front Speaker", NULL, "HPL"},
124         {"Front Speaker", NULL, "OUT3"},
125 
126         /* rear speaker connected to SPKL, SPKR */
127         {"Rear Speaker", NULL, "SPKL"},
128         {"Rear Speaker", NULL, "SPKR"},
129 };
130 
131 static int mioa701_wm9713_init(struct snd_soc_pcm_runtime *rtd)
132 {
133         struct snd_soc_codec *codec = rtd->codec;
134 
135         /* Prepare GPIO8 for rear speaker amplifier */
136         snd_soc_update_bits(codec, AC97_GPIO_CFG, 0x100, 0x100);
137 
138         /* Prepare MIC input */
139         snd_soc_update_bits(codec, AC97_3D_CONTROL, 0xc000, 0xc000);
140 
141         return 0;
142 }
143 
144 static struct snd_soc_ops mioa701_ops;
145 
146 static struct snd_soc_dai_link mioa701_dai[] = {
147         {
148                 .name = "AC97",
149                 .stream_name = "AC97 HiFi",
150                 .cpu_dai_name = "pxa2xx-ac97",
151                 .codec_dai_name = "wm9713-hifi",
152                 .codec_name = "wm9713-codec",
153                 .init = mioa701_wm9713_init,
154                 .platform_name = "pxa-pcm-audio",
155                 .ops = &mioa701_ops,
156         },
157         {
158                 .name = "AC97 Aux",
159                 .stream_name = "AC97 Aux",
160                 .cpu_dai_name = "pxa2xx-ac97-aux",
161                 .codec_dai_name ="wm9713-aux",
162                 .codec_name = "wm9713-codec",
163                 .platform_name = "pxa-pcm-audio",
164                 .ops = &mioa701_ops,
165         },
166 };
167 
168 static struct snd_soc_card mioa701 = {
169         .name = "MioA701",
170         .owner = THIS_MODULE,
171         .dai_link = mioa701_dai,
172         .num_links = ARRAY_SIZE(mioa701_dai),
173 
174         .dapm_widgets = mioa701_dapm_widgets,
175         .num_dapm_widgets = ARRAY_SIZE(mioa701_dapm_widgets),
176         .dapm_routes = audio_map,
177         .num_dapm_routes = ARRAY_SIZE(audio_map),
178 };
179 
180 static int mioa701_wm9713_probe(struct platform_device *pdev)
181 {
182         int rc;
183 
184         if (!machine_is_mioa701())
185                 return -ENODEV;
186 
187         mioa701.dev = &pdev->dev;
188         rc = devm_snd_soc_register_card(&pdev->dev, &mioa701);
189         if (!rc)
190                 dev_warn(&pdev->dev, "Be warned that incorrect mixers/muxes setup will"
191                          "lead to overheating and possible destruction of your device."
192                          " Do not use without a good knowledge of mio's board design!\n");
193         return rc;
194 }
195 
196 static struct platform_driver mioa701_wm9713_driver = {
197         .probe          = mioa701_wm9713_probe,
198         .driver         = {
199                 .name           = "mioa701-wm9713",
200                 .pm     = &snd_soc_pm_ops,
201         },
202 };
203 
204 module_platform_driver(mioa701_wm9713_driver);
205 
206 /* Module information */
207 MODULE_AUTHOR("Robert Jarzmik (rjarzmik@free.fr)");
208 MODULE_DESCRIPTION("ALSA SoC WM9713 MIO A701");
209 MODULE_LICENSE("GPL");
210 MODULE_ALIAS("platform:mioa701-wm9713");
211 

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