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
|
/*
* Jack Monitoring Interface
*
* Copyright (C) 2009 Samsung Electronics
* Minkyu Kang <mk7.kang@samsung.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/jack.h>
#include <linux/slab.h>
struct jack_data {
struct jack_platform_data *pdata;
};
static struct platform_device *jack_dev;
static void jack_set_data(struct jack_platform_data *pdata,
const char *name, int value)
{
if (!strcmp(name, "usb"))
pdata->usb_online = value;
else if (!strcmp(name, "charger"))
pdata->charger_online = value;
else if (!strcmp(name, "hdmi"))
pdata->hdmi_online = value;
else if (!strcmp(name, "earjack"))
pdata->earjack_online = value;
else if (!strcmp(name, "earkey"))
pdata->earkey_online = value;
else if (!strcmp(name, "ums"))
pdata->ums_online = value;
else if (!strcmp(name, "cdrom"))
pdata->cdrom_online = value;
else if (!strcmp(name, "jig"))
pdata->jig_online = value;
else if (!strcmp(name, "host"))
pdata->host_online = value;
else if (!strcmp(name, "cradle"))
pdata->cradle_online = value;
}
int jack_get_data(const char *name)
{
struct jack_data *jack = platform_get_drvdata(jack_dev);
if (!strcmp(name, "usb"))
return jack->pdata->usb_online;
else if (!strcmp(name, "charger"))
return jack->pdata->charger_online;
else if (!strcmp(name, "hdmi"))
return jack->pdata->hdmi_online;
else if (!strcmp(name, "earjack"))
return jack->pdata->earjack_online;
else if (!strcmp(name, "earkey"))
return jack->pdata->earkey_online;
else if (!strcmp(name, "ums"))
return jack->pdata->ums_online;
else if (!strcmp(name, "cdrom"))
return jack->pdata->cdrom_online;
else if (!strcmp(name, "jig"))
return jack->pdata->jig_online;
else if (!strcmp(name, "host"))
return jack->pdata->host_online;
else if (!strcmp(name, "cradle"))
return jack->pdata->cradle_online;
return -EINVAL;
}
EXPORT_SYMBOL_GPL(jack_get_data);
void jack_event_handler(const char *name, int value)
{
struct jack_data *jack;
char env_str[16];
char *envp[] = { env_str, NULL };
if (!jack_dev) {
printk(KERN_ERR "jack device is not allocated\n");
return;
}
jack = platform_get_drvdata(jack_dev);
jack_set_data(jack->pdata, name, value);
sprintf(env_str, "CHGDET=%s", name);
dev_info(&jack_dev->dev, "jack event %s\n", env_str);
kobject_uevent_env(&jack_dev->dev.kobj, KOBJ_CHANGE, envp);
}
EXPORT_SYMBOL_GPL(jack_event_handler);
#define JACK_OUTPUT(name) \
static ssize_t jack_show_##name(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
struct jack_data *chip = dev_get_drvdata(dev); \
return sprintf(buf, "%d\n", chip->pdata->name); \
} \
static DEVICE_ATTR(name, S_IRUGO, jack_show_##name, NULL);
JACK_OUTPUT(usb_online);
JACK_OUTPUT(charger_online);
JACK_OUTPUT(hdmi_online);
JACK_OUTPUT(earjack_online);
JACK_OUTPUT(earkey_online);
JACK_OUTPUT(jig_online);
JACK_OUTPUT(host_online);
JACK_OUTPUT(cradle_online);
static int jack_device_init(struct jack_data *jack)
{
struct jack_platform_data *pdata = jack->pdata;
int ret;
if (pdata->usb_online != -1)
ret = device_create_file(&jack_dev->dev,
&dev_attr_usb_online);
if (pdata->charger_online != -1)
ret = device_create_file(&jack_dev->dev,
&dev_attr_charger_online);
if (pdata->hdmi_online != -1)
ret = device_create_file(&jack_dev->dev,
&dev_attr_hdmi_online);
if (pdata->earjack_online != -1)
ret = device_create_file(&jack_dev->dev,
&dev_attr_earjack_online);
if (pdata->earkey_online != -1)
ret = device_create_file(&jack_dev->dev,
&dev_attr_earkey_online);
if (pdata->jig_online != -1)
ret = device_create_file(&jack_dev->dev,
&dev_attr_jig_online);
if (pdata->host_online != -1)
ret = device_create_file(&jack_dev->dev,
&dev_attr_host_online);
if (pdata->cradle_online != -1)
ret = device_create_file(&jack_dev->dev,
&dev_attr_cradle_online);
return 0;
}
static int __devinit jack_probe(struct platform_device *pdev)
{
struct jack_platform_data *pdata = pdev->dev.platform_data;
struct jack_data *jack;
jack = kzalloc(sizeof(struct jack_data), GFP_KERNEL);
if (!jack) {
dev_err(&pdev->dev, "failed to allocate driver data\n");
return -ENOMEM;
}
platform_set_drvdata(pdev, jack);
jack_dev = pdev;
jack->pdata = pdata;
jack_device_init(jack);
return 0;
}
static int __devexit jack_remove(struct platform_device *pdev)
{
struct jack_platform_data *pdata = pdev->dev.platform_data;
if (pdata->usb_online != -1)
device_remove_file(&jack_dev->dev, &dev_attr_usb_online);
if (pdata->charger_online != -1)
device_remove_file(&jack_dev->dev, &dev_attr_charger_online);
if (pdata->hdmi_online != -1)
device_remove_file(&jack_dev->dev, &dev_attr_hdmi_online);
if (pdata->earjack_online != -1)
device_remove_file(&jack_dev->dev, &dev_attr_earjack_online);
if (pdata->earkey_online != -1)
device_remove_file(&jack_dev->dev, &dev_attr_earkey_online);
if (pdata->jig_online != -1)
device_remove_file(&jack_dev->dev, &dev_attr_jig_online);
if (pdata->host_online != -1)
device_remove_file(&jack_dev->dev, &dev_attr_host_online);
if (pdata->cradle_online != -1)
device_remove_file(&jack_dev->dev, &dev_attr_cradle_online);
platform_set_drvdata(pdev, NULL);
return 0;
}
static struct platform_driver jack_driver = {
.probe = jack_probe,
.remove = __devexit_p(jack_remove),
.driver = {
.name = "jack",
.owner = THIS_MODULE,
},
};
static int __init jack_init(void)
{
return platform_driver_register(&jack_driver);
}
module_init(jack_init);
static void __exit jack_exit(void)
{
platform_driver_unregister(&jack_driver);
}
module_exit(jack_exit);
MODULE_AUTHOR("Minkyu Kang <mk7.kang@samsung.com>");
MODULE_DESCRIPTION("Jack Monitoring Interface");
MODULE_LICENSE("GPL");
|
