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