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
30 #include <asm/mach-types.h>
31 #include <mach/tosa.h>
32 #include <mach/audio.h>
33
34 #include "../codecs/wm9712.h"
35 #include "pxa2xx-ac97.h"
36
37 #define TOSA_HP 0
38 #define TOSA_MIC_INT 1
39 #define TOSA_HEADSET 2
40 #define TOSA_HP_OFF 3
41 #define TOSA_SPK_ON 0
42 #define TOSA_SPK_OFF 1
43
44 static int tosa_jack_func;
45 static int tosa_spk_func;
46
tosa_ext_control(struct snd_soc_codec * codec)47 static void tosa_ext_control(struct snd_soc_codec *codec)
48 {
49 struct snd_soc_dapm_context *dapm = &codec->dapm;
50
51 /* set up jack connection */
52 switch (tosa_jack_func) {
53 case TOSA_HP:
54 snd_soc_dapm_disable_pin(dapm, "Mic (Internal)");
55 snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
56 snd_soc_dapm_disable_pin(dapm, "Headset Jack");
57 break;
58 case TOSA_MIC_INT:
59 snd_soc_dapm_enable_pin(dapm, "Mic (Internal)");
60 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
61 snd_soc_dapm_disable_pin(dapm, "Headset Jack");
62 break;
63 case TOSA_HEADSET:
64 snd_soc_dapm_disable_pin(dapm, "Mic (Internal)");
65 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
66 snd_soc_dapm_enable_pin(dapm, "Headset Jack");
67 break;
68 }
69
70 if (tosa_spk_func == TOSA_SPK_ON)
71 snd_soc_dapm_enable_pin(dapm, "Speaker");
72 else
73 snd_soc_dapm_disable_pin(dapm, "Speaker");
74
75 snd_soc_dapm_sync(dapm);
76 }
77
tosa_startup(struct snd_pcm_substream * substream)78 static int tosa_startup(struct snd_pcm_substream *substream)
79 {
80 struct snd_soc_pcm_runtime *rtd = substream->private_data;
81 struct snd_soc_codec *codec = rtd->codec;
82
83 mutex_lock(&codec->mutex);
84
85 /* check the jack status at stream startup */
86 tosa_ext_control(codec);
87
88 mutex_unlock(&codec->mutex);
89
90 return 0;
91 }
92
93 static struct snd_soc_ops tosa_ops = {
94 .startup = tosa_startup,
95 };
96
tosa_get_jack(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)97 static int tosa_get_jack(struct snd_kcontrol *kcontrol,
98 struct snd_ctl_elem_value *ucontrol)
99 {
100 ucontrol->value.integer.value[0] = tosa_jack_func;
101 return 0;
102 }
103
tosa_set_jack(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)104 static int tosa_set_jack(struct snd_kcontrol *kcontrol,
105 struct snd_ctl_elem_value *ucontrol)
106 {
107 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
108
109 if (tosa_jack_func == ucontrol->value.integer.value[0])
110 return 0;
111
112 tosa_jack_func = ucontrol->value.integer.value[0];
113 tosa_ext_control(codec);
114 return 1;
115 }
116
tosa_get_spk(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)117 static int tosa_get_spk(struct snd_kcontrol *kcontrol,
118 struct snd_ctl_elem_value *ucontrol)
119 {
120 ucontrol->value.integer.value[0] = tosa_spk_func;
121 return 0;
122 }
123
tosa_set_spk(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)124 static int tosa_set_spk(struct snd_kcontrol *kcontrol,
125 struct snd_ctl_elem_value *ucontrol)
126 {
127 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
128
129 if (tosa_spk_func == ucontrol->value.integer.value[0])
130 return 0;
131
132 tosa_spk_func = ucontrol->value.integer.value[0];
133 tosa_ext_control(codec);
134 return 1;
135 }
136
137 /* tosa dapm event handlers */
tosa_hp_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * k,int event)138 static int tosa_hp_event(struct snd_soc_dapm_widget *w,
139 struct snd_kcontrol *k, int event)
140 {
141 gpio_set_value(TOSA_GPIO_L_MUTE, SND_SOC_DAPM_EVENT_ON(event) ? 1 :0);
142 return 0;
143 }
144
145 /* tosa machine dapm widgets */
146 static const struct snd_soc_dapm_widget tosa_dapm_widgets[] = {
147 SND_SOC_DAPM_HP("Headphone Jack", tosa_hp_event),
148 SND_SOC_DAPM_HP("Headset Jack", NULL),
149 SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
150 SND_SOC_DAPM_SPK("Speaker", NULL),
151 };
152
153 /* tosa audio map */
154 static const struct snd_soc_dapm_route audio_map[] = {
155
156 /* headphone connected to HPOUTL, HPOUTR */
157 {"Headphone Jack", NULL, "HPOUTL"},
158 {"Headphone Jack", NULL, "HPOUTR"},
159
160 /* ext speaker connected to LOUT2, ROUT2 */
161 {"Speaker", NULL, "LOUT2"},
162 {"Speaker", NULL, "ROUT2"},
163
164 /* internal mic is connected to mic1, mic2 differential - with bias */
165 {"MIC1", NULL, "Mic Bias"},
166 {"MIC2", NULL, "Mic Bias"},
167 {"Mic Bias", NULL, "Mic (Internal)"},
168
169 /* headset is connected to HPOUTR, and LINEINR with bias */
170 {"Headset Jack", NULL, "HPOUTR"},
171 {"LINEINR", NULL, "Mic Bias"},
172 {"Mic Bias", NULL, "Headset Jack"},
173 };
174
175 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
176 "Off"};
177 static const char *spk_function[] = {"On", "Off"};
178 static const struct soc_enum tosa_enum[] = {
179 SOC_ENUM_SINGLE_EXT(5, jack_function),
180 SOC_ENUM_SINGLE_EXT(2, spk_function),
181 };
182
183 static const struct snd_kcontrol_new tosa_controls[] = {
184 SOC_ENUM_EXT("Jack Function", tosa_enum[0], tosa_get_jack,
185 tosa_set_jack),
186 SOC_ENUM_EXT("Speaker Function", tosa_enum[1], tosa_get_spk,
187 tosa_set_spk),
188 };
189
tosa_ac97_init(struct snd_soc_pcm_runtime * rtd)190 static int tosa_ac97_init(struct snd_soc_pcm_runtime *rtd)
191 {
192 struct snd_soc_codec *codec = rtd->codec;
193 struct snd_soc_dapm_context *dapm = &codec->dapm;
194 int err;
195
196 snd_soc_dapm_nc_pin(dapm, "OUT3");
197 snd_soc_dapm_nc_pin(dapm, "MONOOUT");
198
199 /* add tosa specific controls */
200 err = snd_soc_add_codec_controls(codec, tosa_controls,
201 ARRAY_SIZE(tosa_controls));
202 if (err < 0)
203 return err;
204
205 /* add tosa specific widgets */
206 snd_soc_dapm_new_controls(dapm, tosa_dapm_widgets,
207 ARRAY_SIZE(tosa_dapm_widgets));
208
209 /* set up tosa specific audio path audio_map */
210 snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
211
212 return 0;
213 }
214
215 static struct snd_soc_dai_link tosa_dai[] = {
216 {
217 .name = "AC97",
218 .stream_name = "AC97 HiFi",
219 .cpu_dai_name = "pxa2xx-ac97",
220 .codec_dai_name = "wm9712-hifi",
221 .platform_name = "pxa-pcm-audio",
222 .codec_name = "wm9712-codec",
223 .init = tosa_ac97_init,
224 .ops = &tosa_ops,
225 },
226 {
227 .name = "AC97 Aux",
228 .stream_name = "AC97 Aux",
229 .cpu_dai_name = "pxa2xx-ac97-aux",
230 .codec_dai_name = "wm9712-aux",
231 .platform_name = "pxa-pcm-audio",
232 .codec_name = "wm9712-codec",
233 .ops = &tosa_ops,
234 },
235 };
236
237 static struct snd_soc_card tosa = {
238 .name = "Tosa",
239 .owner = THIS_MODULE,
240 .dai_link = tosa_dai,
241 .num_links = ARRAY_SIZE(tosa_dai),
242 };
243
tosa_probe(struct platform_device * pdev)244 static int tosa_probe(struct platform_device *pdev)
245 {
246 struct snd_soc_card *card = ⤩
247 int ret;
248
249 ret = gpio_request_one(TOSA_GPIO_L_MUTE, GPIOF_OUT_INIT_LOW,
250 "Headphone Jack");
251 if (ret)
252 return ret;
253
254 card->dev = &pdev->dev;
255
256 ret = snd_soc_register_card(card);
257 if (ret) {
258 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
259 ret);
260 gpio_free(TOSA_GPIO_L_MUTE);
261 }
262 return ret;
263 }
264
tosa_remove(struct platform_device * pdev)265 static int tosa_remove(struct platform_device *pdev)
266 {
267 struct snd_soc_card *card = platform_get_drvdata(pdev);
268
269 gpio_free(TOSA_GPIO_L_MUTE);
270 snd_soc_unregister_card(card);
271 return 0;
272 }
273
274 static struct platform_driver tosa_driver = {
275 .driver = {
276 .name = "tosa-audio",
277 .owner = THIS_MODULE,
278 },
279 .probe = tosa_probe,
280 .remove = tosa_remove,
281 };
282
283 module_platform_driver(tosa_driver);
284
285 /* Module information */
286 MODULE_AUTHOR("Richard Purdie");
287 MODULE_DESCRIPTION("ALSA SoC Tosa");
288 MODULE_LICENSE("GPL");
289 MODULE_ALIAS("platform:tosa-audio");
290