1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
|
/*
* SoC audio for HP iPAQ hx4700
*
* Copyright (c) 2009 Philipp Zabel
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
*/
#include <linux/module.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <sound/core.h>
#include <sound/jack.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <mach/hx4700.h>
#include <asm/mach-types.h>
#include "pxa2xx-i2s.h"
#include "../codecs/ak4641.h"
static struct snd_soc_jack hs_jack;
/* Headphones jack detection DAPM pin */
static struct snd_soc_jack_pin hs_jack_pin[] = {
{
.pin = "Headphone Jack",
.mask = SND_JACK_HEADPHONE,
},
{
.pin = "Speaker",
/* disable speaker when hp jack is inserted */
.mask = SND_JACK_HEADPHONE,
.invert = 1,
},
};
/* Headphones jack detection GPIO */
static struct snd_soc_jack_gpio hs_jack_gpio = {
.gpio = GPIO75_HX4700_EARPHONE_nDET,
.invert = true,
.name = "hp-gpio",
.report = SND_JACK_HEADPHONE,
.debounce_time = 200,
};
/*
* iPAQ hx4700 uses I2S for capture and playback.
*/
static int hx4700_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
int ret = 0;
/* set codec DAI configuration */
ret = snd_soc_dai_set_fmt(codec_dai,
SND_SOC_DAIFMT_MSB | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS);
if (ret < 0)
return ret;
/* set cpu DAI configuration */
ret = snd_soc_dai_set_fmt(cpu_dai,
SND_SOC_DAIFMT_MSB | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS);
if (ret < 0)
return ret;
/* set the I2S system clock as output */
ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
SND_SOC_CLOCK_OUT);
if (ret < 0)
return ret;
/* inform codec driver about clock freq *
* (PXA I2S always uses divider 256) */
ret = snd_soc_dai_set_sysclk(codec_dai, 0, 256 * params_rate(params),
SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
return 0;
}
static struct snd_soc_ops hx4700_ops = {
.hw_params = hx4700_hw_params,
};
static int hx4700_spk_power(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *k, int event)
{
gpio_set_value(GPIO107_HX4700_SPK_nSD, !!SND_SOC_DAPM_EVENT_ON(event));
return 0;
}
static int hx4700_hp_power(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *k, int event)
{
gpio_set_value(GPIO92_HX4700_HP_DRIVER, !!SND_SOC_DAPM_EVENT_ON(event));
return 0;
}
/* hx4700 machine dapm widgets */
static const struct snd_soc_dapm_widget hx4700_dapm_widgets[] = {
SND_SOC_DAPM_HP("Headphone Jack", hx4700_hp_power),
SND_SOC_DAPM_SPK("Speaker", hx4700_spk_power),
SND_SOC_DAPM_MIC("Built-in Microphone", NULL),
};
/* hx4700 machine audio_map */
static const struct snd_soc_dapm_route hx4700_audio_map[] = {
/* Headphone connected to LOUT, ROUT */
{"Headphone Jack", NULL, "LOUT"},
{"Headphone Jack", NULL, "ROUT"},
/* Speaker connected to MOUT2 */
{"Speaker", NULL, "MOUT2"},
/* Microphone connected to MICIN */
{"MICIN", NULL, "Built-in Microphone"},
{"AIN", NULL, "MICOUT"},
};
/*
* Logic for a ak4641 as connected on a HP iPAQ hx4700
*/
static int hx4700_ak4641_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_codec *codec = rtd->codec;
struct snd_soc_dapm_context *dapm = &codec->dapm;
int err;
/* NC codec pins */
/* FIXME: is anything connected here? */
snd_soc_dapm_nc_pin(dapm, "MOUT1");
snd_soc_dapm_nc_pin(dapm, "MICEXT");
snd_soc_dapm_nc_pin(dapm, "AUX");
/* Jack detection API stuff */
err = snd_soc_jack_new(codec, "Headphone Jack",
SND_JACK_HEADPHONE, &hs_jack);
if (err)
return err;
err = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pin),
hs_jack_pin);
if (err)
return err;
err = snd_soc_jack_add_gpios(&hs_jack, 1, &hs_jack_gpio);
return err;
}
/* hx4700 digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link hx4700_dai = {
.name = "ak4641",
.stream_name = "AK4641",
.cpu_dai_name = "pxa2xx-i2s",
.codec_dai_name = "ak4641-hifi",
.platform_name = "pxa-pcm-audio",
.codec_name = "ak4641.0-0012",
.init = hx4700_ak4641_init,
.ops = &hx4700_ops,
};
/* hx4700 audio machine driver */
static struct snd_soc_card snd_soc_card_hx4700 = {
.name = "iPAQ hx4700",
.dai_link = &hx4700_dai,
.num_links = 1,
.dapm_widgets = hx4700_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(hx4700_dapm_widgets),
.dapm_routes = hx4700_audio_map,
.num_dapm_routes = ARRAY_SIZE(hx4700_audio_map),
};
static struct gpio hx4700_audio_gpios[] = {
{ GPIO107_HX4700_SPK_nSD, GPIOF_OUT_INIT_HIGH, "SPK_POWER" },
{ GPIO92_HX4700_HP_DRIVER, GPIOF_OUT_INIT_LOW, "EP_POWER" },
};
static int __devinit hx4700_audio_probe(struct platform_device *pdev)
{
int ret;
if (!machine_is_h4700())
return -ENODEV;
ret = gpio_request_array(hx4700_audio_gpios,
ARRAY_SIZE(hx4700_audio_gpios));
if (ret)
return ret;
snd_soc_card_hx4700.dev = &pdev->dev;
ret = snd_soc_register_card(&snd_soc_card_hx4700);
if (ret)
gpio_free_array(hx4700_audio_gpios,
ARRAY_SIZE(hx4700_audio_gpios));
return ret;
}
static int __devexit hx4700_audio_remove(struct platform_device *pdev)
{
snd_soc_jack_free_gpios(&hs_jack, 1, &hs_jack_gpio);
snd_soc_unregister_card(&snd_soc_card_hx4700);
gpio_set_value(GPIO92_HX4700_HP_DRIVER, 0);
gpio_set_value(GPIO107_HX4700_SPK_nSD, 0);
gpio_free_array(hx4700_audio_gpios, ARRAY_SIZE(hx4700_audio_gpios));
return 0;
}
static struct platform_driver hx4700_audio_driver = {
.driver = {
.name = "hx4700-audio",
.owner = THIS_MODULE,
.pm = &snd_soc_pm_ops,
},
.probe = hx4700_audio_probe,
.remove = __devexit_p(hx4700_audio_remove),
};
static int __init hx4700_modinit(void)
{
return platform_driver_register(&hx4700_audio_driver);
}
module_init(hx4700_modinit);
static void __exit hx4700_modexit(void)
{
platform_driver_unregister(&hx4700_audio_driver);
}
module_exit(hx4700_modexit);
MODULE_AUTHOR("Philipp Zabel");
MODULE_DESCRIPTION("ALSA SoC iPAQ hx4700");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:hx4700-audio");
|
