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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
41static int tosa_jack_func;
42static int tosa_spk_func;
43
44static 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
78static 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
88static const struct snd_soc_ops tosa_ops = {
89 .startup = tosa_startup,
90};
91
92static 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
99static 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
112static 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
119static 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 */
133static 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 */
141static const struct snd_soc_dapm_widget tosa_dapm_widgets[] = {
142SND_SOC_DAPM_HP("Headphone Jack", tosa_hp_event),
143SND_SOC_DAPM_HP("Headset Jack", NULL),
144SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
145SND_SOC_DAPM_SPK("Speaker", NULL),
146};
147
148/* tosa audio map */
149static 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
170static const char * const jack_function[] = {"Headphone", "Mic", "Line",
171 "Headset", "Off"};
172static const char * const spk_function[] = {"On", "Off"};
173static const struct soc_enum tosa_enum[] = {
174 SOC_ENUM_SINGLE_EXT(5, jack_function),
175 SOC_ENUM_SINGLE_EXT(2, spk_function),
176};
177
178static 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
185static 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
206static 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
221static 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
242static int tosa_remove(struct platform_device *pdev)
243{
244 gpio_free(TOSA_GPIO_L_MUTE);
245 return 0;
246}
247
248static 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
257module_platform_driver(tosa_driver);
258
259/* Module information */
260MODULE_AUTHOR("Richard Purdie");
261MODULE_DESCRIPTION("ALSA SoC Tosa");
262MODULE_LICENSE("GPL");
263MODULE_ALIAS("platform:tosa-audio");