1 /*
2 * tosa.c -- SoC audio for Tosa
3 *
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 *
7 * Authors: Liam Girdwood <lrg@slimlogic.co.uk>
8 * Richard Purdie <richard@openedhand.com>
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 *
15 * GPIO's
16 * 1 - Jack Insertion
17 * 5 - Hookswitch (headset answer/hang up switch)
18 *
19 */
20
21 #include <linux/module.h>
22 #include <linux/moduleparam.h>
23 #include <linux/device.h>
24 #include <linux/gpio.h>
25
26 #include <sound/core.h>
27 #include <sound/pcm.h>
28 #include <sound/soc.h>
29 #include <sound/soc-dapm.h>
30
31 #include <asm/mach-types.h>
32 #include <mach/tosa.h>
33 #include <mach/audio.h>
34
35 #include "../codecs/wm9712.h"
36 #include "pxa2xx-pcm.h"
37 #include "pxa2xx-ac97.h"
38
39 static struct snd_soc_card tosa;
40
41 #define TOSA_HP 0
42 #define TOSA_MIC_INT 1
43 #define TOSA_HEADSET 2
44 #define TOSA_HP_OFF 3
45 #define TOSA_SPK_ON 0
46 #define TOSA_SPK_OFF 1
47
48 static int tosa_jack_func;
49 static int tosa_spk_func;
50
51 static void tosa_ext_control(struct snd_soc_codec *codec)
52 {
53 /* set up jack connection */
54 switch (tosa_jack_func) {
55 case TOSA_HP:
56 snd_soc_dapm_disable_pin(codec, "Mic (Internal)");
57 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
58 snd_soc_dapm_disable_pin(codec, "Headset Jack");
59 break;
60 case TOSA_MIC_INT:
61 snd_soc_dapm_enable_pin(codec, "Mic (Internal)");
62 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
63 snd_soc_dapm_disable_pin(codec, "Headset Jack");
64 break;
65 case TOSA_HEADSET:
66 snd_soc_dapm_disable_pin(codec, "Mic (Internal)");
67 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
68 snd_soc_dapm_enable_pin(codec, "Headset Jack");
69 break;
70 }
71
72 if (tosa_spk_func == TOSA_SPK_ON)
73 snd_soc_dapm_enable_pin(codec, "Speaker");
74 else
75 snd_soc_dapm_disable_pin(codec, "Speaker");
76
77 snd_soc_dapm_sync(codec);
78 }
79
80 static int tosa_startup(struct snd_pcm_substream *substream)
81 {
82 struct snd_soc_pcm_runtime *rtd = substream->private_data;
83 struct snd_soc_codec *codec = rtd->socdev->card->codec;
84
85 /* check the jack status at stream startup */
86 tosa_ext_control(codec);
87 return 0;
88 }
89
90 static struct snd_soc_ops tosa_ops = {
91 .startup = tosa_startup,
92 };
93
94 static int tosa_get_jack(struct snd_kcontrol *kcontrol,
95 struct snd_ctl_elem_value *ucontrol)
96 {
97 ucontrol->value.integer.value[0] = tosa_jack_func;
98 return 0;
99 }
100
101 static int tosa_set_jack(struct snd_kcontrol *kcontrol,
102 struct snd_ctl_elem_value *ucontrol)
103 {
104 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
105
106 if (tosa_jack_func == ucontrol->value.integer.value[0])
107 return 0;
108
109 tosa_jack_func = ucontrol->value.integer.value[0];
110 tosa_ext_control(codec);
111 return 1;
112 }
113
114 static int tosa_get_spk(struct snd_kcontrol *kcontrol,
115 struct snd_ctl_elem_value *ucontrol)
116 {
117 ucontrol->value.integer.value[0] = tosa_spk_func;
118 return 0;
119 }
120
121 static int tosa_set_spk(struct snd_kcontrol *kcontrol,
122 struct snd_ctl_elem_value *ucontrol)
123 {
124 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
125
126 if (tosa_spk_func == ucontrol->value.integer.value[0])
127 return 0;
128
129 tosa_spk_func = ucontrol->value.integer.value[0];
130 tosa_ext_control(codec);
131 return 1;
132 }
133
134 /* tosa dapm event handlers */
135 static int tosa_hp_event(struct snd_soc_dapm_widget *w,
136 struct snd_kcontrol *k, int event)
137 {
138 gpio_set_value(TOSA_GPIO_L_MUTE, SND_SOC_DAPM_EVENT_ON(event) ? 1 :0);
139 return 0;
140 }
141
142 /* tosa machine dapm widgets */
143 static const struct snd_soc_dapm_widget tosa_dapm_widgets[] = {
144 SND_SOC_DAPM_HP("Headphone Jack", tosa_hp_event),
145 SND_SOC_DAPM_HP("Headset Jack", NULL),
146 SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
147 SND_SOC_DAPM_SPK("Speaker", NULL),
148 };
149
150 /* tosa audio map */
151 static const struct snd_soc_dapm_route audio_map[] = {
152
153 /* headphone connected to HPOUTL, HPOUTR */
154 {"Headphone Jack", NULL, "HPOUTL"},
155 {"Headphone Jack", NULL, "HPOUTR"},
156
157 /* ext speaker connected to LOUT2, ROUT2 */
158 {"Speaker", NULL, "LOUT2"},
159 {"Speaker", NULL, "ROUT2"},
160
161 /* internal mic is connected to mic1, mic2 differential - with bias */
162 {"MIC1", NULL, "Mic Bias"},
163 {"MIC2", NULL, "Mic Bias"},
164 {"Mic Bias", NULL, "Mic (Internal)"},
165
166 /* headset is connected to HPOUTR, and LINEINR with bias */
167 {"Headset Jack", NULL, "HPOUTR"},
168 {"LINEINR", NULL, "Mic Bias"},
169 {"Mic Bias", NULL, "Headset Jack"},
170 };
171
172 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
173 "Off"};
174 static const char *spk_function[] = {"On", "Off"};
175 static const struct soc_enum tosa_enum[] = {
176 SOC_ENUM_SINGLE_EXT(5, jack_function),
177 SOC_ENUM_SINGLE_EXT(2, spk_function),
178 };
179
180 static const struct snd_kcontrol_new tosa_controls[] = {
181 SOC_ENUM_EXT("Jack Function", tosa_enum[0], tosa_get_jack,
182 tosa_set_jack),
183 SOC_ENUM_EXT("Speaker Function", tosa_enum[1], tosa_get_spk,
184 tosa_set_spk),
185 };
186
187 static int tosa_ac97_init(struct snd_soc_codec *codec)
188 {
189 int err;
190
191 snd_soc_dapm_nc_pin(codec, "OUT3");
192 snd_soc_dapm_nc_pin(codec, "MONOOUT");
193
194 /* add tosa specific controls */
195 err = snd_soc_add_controls(codec, tosa_controls,
196 ARRAY_SIZE(tosa_controls));
197 if (err < 0)
198 return err;
199
200 /* add tosa specific widgets */
201 snd_soc_dapm_new_controls(codec, tosa_dapm_widgets,
202 ARRAY_SIZE(tosa_dapm_widgets));
203
204 /* set up tosa specific audio path audio_map */
205 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
206
207 snd_soc_dapm_sync(codec);
208 return 0;
209 }
210
211 static struct snd_soc_dai_link tosa_dai[] = {
212 {
213 .name = "AC97",
214 .stream_name = "AC97 HiFi",
215 .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
216 .codec_dai = &wm9712_dai[WM9712_DAI_AC97_HIFI],
217 .init = tosa_ac97_init,
218 .ops = &tosa_ops,
219 },
220 {
221 .name = "AC97 Aux",
222 .stream_name = "AC97 Aux",
223 .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
224 .codec_dai = &wm9712_dai[WM9712_DAI_AC97_AUX],
225 .ops = &tosa_ops,
226 },
227 };
228
229 static int tosa_probe(struct platform_device *dev)
230 {
231 int ret;
232
233 ret = gpio_request(TOSA_GPIO_L_MUTE, "Headphone Jack");
234 if (ret)
235 return ret;
236 ret = gpio_direction_output(TOSA_GPIO_L_MUTE, 0);
237 if (ret)
238 gpio_free(TOSA_GPIO_L_MUTE);
239
240 return ret;
241 }
242
243 static int tosa_remove(struct platform_device *dev)
244 {
245 gpio_free(TOSA_GPIO_L_MUTE);
246 return 0;
247 }
248
249 static struct snd_soc_card tosa = {
250 .name = "Tosa",
251 .platform = &pxa2xx_soc_platform,
252 .dai_link = tosa_dai,
253 .num_links = ARRAY_SIZE(tosa_dai),
254 .probe = tosa_probe,
255 .remove = tosa_remove,
256 };
257
258 static struct snd_soc_device tosa_snd_devdata = {
259 .card = &tosa,
260 .codec_dev = &soc_codec_dev_wm9712,
261 };
262
263 static struct platform_device *tosa_snd_device;
264
265 static int __init tosa_init(void)
266 {
267 int ret;
268
269 if (!machine_is_tosa())
270 return -ENODEV;
271
272 tosa_snd_device = platform_device_alloc("soc-audio", -1);
273 if (!tosa_snd_device) {
274 ret = -ENOMEM;
275 goto err_alloc;
276 }
277
278 platform_set_drvdata(tosa_snd_device, &tosa_snd_devdata);
279 tosa_snd_devdata.dev = &tosa_snd_device->dev;
280 ret = platform_device_add(tosa_snd_device);
281
282 if (!ret)
283 return 0;
284
285 platform_device_put(tosa_snd_device);
286
287 err_alloc:
288 return ret;
289 }
290
291 static void __exit tosa_exit(void)
292 {
293 platform_device_unregister(tosa_snd_device);
294 }
295
296 module_init(tosa_init);
297 module_exit(tosa_exit);
298
299 /* Module information */
300 MODULE_AUTHOR("Richard Purdie");
301 MODULE_DESCRIPTION("ALSA SoC Tosa");
302 MODULE_LICENSE("GPL");
303
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