fbui | Framebuffer-based graphical environment |
| download: https://git.y1.nz/archives/fbui.tar.gz | |
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drivers/input/fbui-input.c
1 /*
2 * FBUI input event snagging
3 * Code for relaying input events to FBUI.
4 *
5 * Modification for FBUI by Zachary Smith, copyright (C) 2004.
6 * Based on evbug, which is copyright (c) 1999-2001 Vojtech Pavlik
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 * Should you need to contact me, the author, you can do so either by
23 * e-mail - mail your message to <fbui@comcast.net>.
24 */
25
26 #include <linux/slab.h>
27 #include <linux/module.h>
28 #include <linux/input.h>
29 #include <linux/init.h>
30 #include <linux/device.h>
31 #include <linux/input.h>
32 #include <linux/spinlock.h>
33
34
35
36 MODULE_AUTHOR("Zachary Smith <fbui@comcast.net>");
37 MODULE_DESCRIPTION("Input-driver-event besnagger module");
38 MODULE_LICENSE("GPL");
39
40
41 #ifdef CONFIG_INPUT_FBUI
42
43 static char fbui_input_name[] = "fbui_input";
44
45 static spinlock_t mylock = SPIN_LOCK_UNLOCKED;
46
47 static FBUIInputEventHandler *handler = NULL;
48 static u32 handlerparam = 0;
49
50
51 void fbui_input_register_handler (FBUIInputEventHandler *h, u32 param)
52 {
53 if (h) {
54 handler = h;
55 handlerparam = param;
56 }
57 }
58
59 static void fbui_input_event(struct input_handle *handle, unsigned int type, unsigned int code, int value)
60 {
61 unsigned long flags;
62
63 // printk(KERN_INFO "fbui_input.c: Event. Dev: %s, Type: %d, Code: %d, Value: %d\n", handle->dev->phys, type, code, value);
64
65 if (!handler)
66 return;
67
68 spin_lock_irqsave(&mylock, flags);
69
70 struct input_event e;
71 e.type = type;
72 e.code = code;
73 e.value= value;
74 do_gettimeofday(&e.time);
75 (handler) (handlerparam, &e);
76
77 spin_unlock_irqrestore(&mylock, flags);
78 }
79
80 static struct input_handle *fbui_input_connect(struct input_handler *handler, struct input_dev *dev, struct input_device_id *id)
81 {
82 struct input_handle *handle;
83
84 if (!(handle = kmalloc(sizeof(struct input_handle), GFP_KERNEL)))
85 return NULL;
86 memset(handle, 0, sizeof(struct input_handle));
87
88 handle->dev = dev;
89 handle->handler = handler;
90 handle->name = fbui_input_name;
91
92 input_open_device(handle);
93
94 return handle;
95 }
96
97 static void fbui_input_disconnect(struct input_handle *handle)
98 {
99 input_close_device(handle);
100 kfree(handle);
101 }
102
103 static struct input_device_id fbui_input_ids[] = {
104 { .driver_info = 1 }, /* Matches all devices */
105 { }, /* Terminating zero entry */
106 };
107
108 MODULE_DEVICE_TABLE(input, fbui_input_ids);
109
110 static struct input_handler fbui_input_handler = {
111 .event = fbui_input_event,
112 .connect = fbui_input_connect,
113 .disconnect = fbui_input_disconnect,
114 .name = "fbui_input",
115 .id_table = fbui_input_ids,
116 };
117
118 int __init fbui_input_init(void)
119 {
120 handler = NULL;
121
122 printk(KERN_INFO "FBUI input module: initializing\n");
123
124 input_register_handler(&fbui_input_handler);
125 return 0;
126 }
127
128 void __exit fbui_input_exit(void)
129 {
130 handler = NULL;
131
132 input_unregister_handler(&fbui_input_handler);
133 }
134
135 EXPORT_SYMBOL(fbui_input_register_handler);
136
137 module_init(fbui_input_init);
138 module_exit(fbui_input_exit);
139
140 #endif
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