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