1 /*
2 * $Id: keybdev.c,v 1.3 2000/05/28 17:31:36 vojtech Exp $
3 *
4 * Copyright (c) 1999-2000 Vojtech Pavlik
5 *
6 * Input driver to keyboard driver binding.
7 *
8 * Sponsored by SuSE
9 */
10
11 /*
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 *
26 * Should you need to contact me, the author, you can do so either by
27 * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
28 * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
29 */
30
31 #include <linux/config.h>
32 #include <linux/kbd_ll.h>
33 #include <linux/input.h>
34 #include <linux/malloc.h>
35 #include <linux/init.h>
36 #include <linux/module.h>
37 #include <linux/kbd_kern.h>
38
39 #if defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(__alpha__) || defined(__mips__)
40
41 static int x86_sysrq_alt = 0;
42
43 static unsigned short x86_keycodes[256] =
44 { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
45 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
46 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
47 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
48 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
49 80, 81, 82, 83, 43, 85, 86, 87, 88,115,119,120,121,375,123, 90,
50 284,285,309,298,312, 91,327,328,329,331,333,335,336,337,338,339,
51 367,294,293,286,350, 92,334,512,116,377,109,111,373,347,348,349,
52 360, 93, 94, 95, 98,376,100,101,357,316,354,304,289,102,351,355,
53 103,104,105,275,281,272,306,106,274,107,288,364,358,363,362,361,
54 291,108,381,290,287,292,279,305,280, 99,112,257,258,113,270,114,
55 118,117,125,374,379,259,260,261,262,263,264,265,266,267,268,269,
56 271,273,276,277,278,282,283,295,296,297,299,300,301,302,303,307,
57 308,310,313,314,315,317,318,319,320,321,322,323,324,325,326,330,
58 332,340,341,342,343,344,345,346,356,359,365,368,369,370,371,372 };
59
60 static int emulate_raw(unsigned int keycode, int down)
61 {
62 if (keycode > 255 || !x86_keycodes[keycode])
63 return -1;
64
65 if (keycode == KEY_PAUSE) {
66 handle_scancode(0xe1, 1);
67 handle_scancode(0x1d, down);
68 handle_scancode(0x45, down);
69 return 0;
70 }
71
72 if (keycode == KEY_SYSRQ && x86_sysrq_alt) {
73 handle_scancode(0x54, down);
74 return 0;
75 }
76
77 if (x86_keycodes[keycode] & 0x100)
78 handle_scancode(0xe0, 1);
79
80 handle_scancode(x86_keycodes[keycode] & 0x7f, down);
81
82 if (keycode == KEY_SYSRQ) {
83 handle_scancode(0xe0, 1);
84 handle_scancode(0x37, down);
85 }
86
87 if (keycode == KEY_LEFTALT || keycode == KEY_RIGHTALT)
88 x86_sysrq_alt = down;
89
90 return 0;
91 }
92
93 #elif defined(CONFIG_ADB_KEYBOARD)
94
95 static unsigned char mac_keycodes[128] =
96 { 0, 53, 18, 19, 20, 21, 23, 22, 26, 28, 25, 29, 27, 24, 51, 48,
97 12, 13, 14, 15, 17, 16, 32, 34, 31, 35, 33, 30, 36, 54,128, 1,
98 2, 3, 5, 4, 38, 40, 37, 41, 39, 50, 56, 42, 6, 7, 8, 9,
99 11, 45, 46, 43, 47, 44,123, 67, 58, 49, 57,122,120, 99,118, 96,
100 97, 98,100,101,109, 71,107, 89, 91, 92, 78, 86, 87, 88, 69, 83,
101 84, 85, 82, 65, 42, 0, 10,103,111, 0, 0, 0, 0, 0, 0, 0,
102 76,125, 75,105,124, 0,115, 62,116, 59, 60,119, 61,121,114,117,
103 0, 0, 0, 0,127, 81, 0,113, 0, 0, 0, 0, 0, 55, 55 };
104
105 static int emulate_raw(unsigned int keycode, int down)
106 {
107 if (keycode > 127 || !mac_keycodes[keycode])
108 return -1;
109
110 handle_scancode(mac_keycodes[keycode] & 0x7f, down);
111
112 return 0;
113 }
114
115 #endif
116
117 static struct input_handler keybdev_handler;
118
119 void keybdev_ledfunc(unsigned int led)
120 {
121 struct input_handle *handle;
122
123 for (handle = keybdev_handler.handle; handle; handle = handle->hnext) {
124
125 input_event(handle->dev, EV_LED, LED_SCROLLL, !!(led & 0x01));
126 input_event(handle->dev, EV_LED, LED_NUML, !!(led & 0x02));
127 input_event(handle->dev, EV_LED, LED_CAPSL, !!(led & 0x04));
128
129 }
130 }
131
132 void keybdev_event(struct input_handle *handle, unsigned int type, unsigned int code, int down)
133 {
134 if (type != EV_KEY) return;
135
136 if (emulate_raw(code, down))
137 printk(KERN_WARNING "keyboard.c: can't emulate rawmode for keycode %d\n", code);
138
139 tasklet_schedule(&keyboard_tasklet);
140 }
141
142 static struct input_handle *keybdev_connect(struct input_handler *handler, struct input_dev *dev)
143 {
144 struct input_handle *handle;
145 int i;
146
147 if (!test_bit(EV_KEY, dev->evbit))
148 return NULL;
149
150 for (i = KEY_RESERVED; i < BTN_MISC; i++)
151 if (test_bit(i, dev->keybit)) break;
152
153 if (i == BTN_MISC)
154 return NULL;
155
156 if (!(handle = kmalloc(sizeof(struct input_handle), GFP_KERNEL)))
157 return NULL;
158 memset(handle, 0, sizeof(struct input_handle));
159
160 handle->dev = dev;
161 handle->handler = handler;
162
163 input_open_device(handle);
164
165 printk(KERN_INFO "keybdev.c: Adding keyboard: input%d\n", dev->number);
166
167 return handle;
168 }
169
170 static void keybdev_disconnect(struct input_handle *handle)
171 {
172 printk(KERN_INFO "keybdev.c: Removing keyboard: input%d\n", handle->dev->number);
173 input_close_device(handle);
174 kfree(handle);
175 }
176
177 static struct input_handler keybdev_handler = {
178 event: keybdev_event,
179 connect: keybdev_connect,
180 disconnect: keybdev_disconnect,
181 };
182
183 static int __init keybdev_init(void)
184 {
185 input_register_handler(&keybdev_handler);
186 kbd_ledfunc = keybdev_ledfunc;
187 return 0;
188 }
189
190 static void __exit keybdev_exit(void)
191 {
192 kbd_ledfunc = NULL;
193 input_unregister_handler(&keybdev_handler);
194 }
195
196 module_init(keybdev_init);
197 module_exit(keybdev_exit);
198
199 MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
200 MODULE_DESCRIPTION("Input driver to keyboard driver binding");
201
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