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 "../codecs/wm9713.h"
57 
58 #define AC97_GPIO_PULL		0x58
59 
60 /* Use GPIO8 for rear speaker amplifier */
rear_amp_power(struct snd_soc_component * component,int power)61 static int rear_amp_power(struct snd_soc_component *component, int power)
62 {
63 	unsigned short reg;
64 
65 	if (power) {
66 		reg = snd_soc_component_read32(component, AC97_GPIO_CFG);
67 		snd_soc_component_write(component, AC97_GPIO_CFG, reg | 0x0100);
68 		reg = snd_soc_component_read32(component, AC97_GPIO_PULL);
69 		snd_soc_component_write(component, AC97_GPIO_PULL, reg | (1<<15));
70 	} else {
71 		reg = snd_soc_component_read32(component, AC97_GPIO_CFG);
72 		snd_soc_component_write(component, AC97_GPIO_CFG, reg & ~0x0100);
73 		reg = snd_soc_component_read32(component, AC97_GPIO_PULL);
74 		snd_soc_component_write(component, AC97_GPIO_PULL, reg & ~(1<<15));
75 	}
76 
77 	return 0;
78 }
79 
rear_amp_event(struct snd_soc_dapm_widget * widget,struct snd_kcontrol * kctl,int event)80 static int rear_amp_event(struct snd_soc_dapm_widget *widget,
81 			  struct snd_kcontrol *kctl, int event)
82 {
83 	struct snd_soc_card *card = widget->dapm->card;
84 	struct snd_soc_pcm_runtime *rtd;
85 	struct snd_soc_component *component;
86 
87 	rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
88 	component = rtd->codec_dai->component;
89 	return rear_amp_power(component, 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 
mioa701_wm9713_init(struct snd_soc_pcm_runtime * rtd)130 static int mioa701_wm9713_init(struct snd_soc_pcm_runtime *rtd)
131 {
132 	struct snd_soc_component *component = rtd->codec_dai->component;
133 
134 	/* Prepare GPIO8 for rear speaker amplifier */
135 	snd_soc_component_update_bits(component, AC97_GPIO_CFG, 0x100, 0x100);
136 
137 	/* Prepare MIC input */
138 	snd_soc_component_update_bits(component, AC97_3D_CONTROL, 0xc000, 0xc000);
139 
140 	return 0;
141 }
142 
143 static struct snd_soc_ops mioa701_ops;
144 
145 static struct snd_soc_dai_link mioa701_dai[] = {
146 	{
147 		.name = "AC97",
148 		.stream_name = "AC97 HiFi",
149 		.cpu_dai_name = "pxa2xx-ac97",
150 		.codec_dai_name = "wm9713-hifi",
151 		.codec_name = "wm9713-codec",
152 		.init = mioa701_wm9713_init,
153 		.platform_name = "pxa-pcm-audio",
154 		.ops = &mioa701_ops,
155 	},
156 	{
157 		.name = "AC97 Aux",
158 		.stream_name = "AC97 Aux",
159 		.cpu_dai_name = "pxa2xx-ac97-aux",
160 		.codec_dai_name = "wm9713-aux",
161 		.codec_name = "wm9713-codec",
162 		.platform_name = "pxa-pcm-audio",
163 		.ops = &mioa701_ops,
164 	},
165 };
166 
167 static struct snd_soc_card mioa701 = {
168 	.name = "MioA701",
169 	.owner = THIS_MODULE,
170 	.dai_link = mioa701_dai,
171 	.num_links = ARRAY_SIZE(mioa701_dai),
172 
173 	.dapm_widgets = mioa701_dapm_widgets,
174 	.num_dapm_widgets = ARRAY_SIZE(mioa701_dapm_widgets),
175 	.dapm_routes = audio_map,
176 	.num_dapm_routes = ARRAY_SIZE(audio_map),
177 };
178 
mioa701_wm9713_probe(struct platform_device * pdev)179 static int mioa701_wm9713_probe(struct platform_device *pdev)
180 {
181 	int rc;
182 
183 	if (!machine_is_mioa701())
184 		return -ENODEV;
185 
186 	mioa701.dev = &pdev->dev;
187 	rc = devm_snd_soc_register_card(&pdev->dev, &mioa701);
188 	if (!rc)
189 		dev_warn(&pdev->dev, "Be warned that incorrect mixers/muxes setup will "
190 			 "lead to overheating and possible destruction of your device."
191 			 " Do not use without a good knowledge of mio's board design!\n");
192 	return rc;
193 }
194 
195 static struct platform_driver mioa701_wm9713_driver = {
196 	.probe		= mioa701_wm9713_probe,
197 	.driver		= {
198 		.name		= "mioa701-wm9713",
199 		.pm     = &snd_soc_pm_ops,
200 	},
201 };
202 
203 module_platform_driver(mioa701_wm9713_driver);
204 
205 /* Module information */
206 MODULE_AUTHOR("Robert Jarzmik (rjarzmik@free.fr)");
207 MODULE_DESCRIPTION("ALSA SoC WM9713 MIO A701");
208 MODULE_LICENSE("GPL");
209 MODULE_ALIAS("platform:mioa701-wm9713");
210