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Diffstat (limited to 'drivers/input/keyboard/xtkbd.c')
-rw-r--r--drivers/input/keyboard/xtkbd.c188
1 files changed, 188 insertions, 0 deletions
diff --git a/drivers/input/keyboard/xtkbd.c b/drivers/input/keyboard/xtkbd.c
new file mode 100644
index 000000000000..19eaec7789d1
--- /dev/null
+++ b/drivers/input/keyboard/xtkbd.c
@@ -0,0 +1,188 @@
1/*
2 * $Id: xtkbd.c,v 1.11 2001/09/25 10:12:07 vojtech Exp $
3 *
4 * Copyright (c) 1999-2001 Vojtech Pavlik
5 */
6
7/*
8 * XT keyboard driver for Linux
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@ucw.cz>, or by paper mail:
28 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
29 */
30
31#include <linux/slab.h>
32#include <linux/module.h>
33#include <linux/input.h>
34#include <linux/init.h>
35#include <linux/serio.h>
36
37#define DRIVER_DESC "XT keyboard driver"
38
39MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
40MODULE_DESCRIPTION(DRIVER_DESC);
41MODULE_LICENSE("GPL");
42
43#define XTKBD_EMUL0 0xe0
44#define XTKBD_EMUL1 0xe1
45#define XTKBD_KEY 0x7f
46#define XTKBD_RELEASE 0x80
47
48static unsigned char xtkbd_keycode[256] = {
49 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
50 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
51 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
52 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
53 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
54 80, 81, 82, 83, 0, 0, 0, 87, 88, 0, 0, 0, 0, 0, 0, 0,
55 0, 0, 0, 0, 0, 87, 88, 0, 0, 0, 0,110,111,103,108,105,
56 106
57};
58
59static char *xtkbd_name = "XT Keyboard";
60
61struct xtkbd {
62 unsigned char keycode[256];
63 struct input_dev dev;
64 struct serio *serio;
65 char phys[32];
66};
67
68static irqreturn_t xtkbd_interrupt(struct serio *serio,
69 unsigned char data, unsigned int flags, struct pt_regs *regs)
70{
71 struct xtkbd *xtkbd = serio_get_drvdata(serio);
72
73 switch (data) {
74 case XTKBD_EMUL0:
75 case XTKBD_EMUL1:
76 break;
77 default:
78
79 if (xtkbd->keycode[data & XTKBD_KEY]) {
80 input_regs(&xtkbd->dev, regs);
81 input_report_key(&xtkbd->dev, xtkbd->keycode[data & XTKBD_KEY], !(data & XTKBD_RELEASE));
82 input_sync(&xtkbd->dev);
83 } else {
84 printk(KERN_WARNING "xtkbd.c: Unknown key (scancode %#x) %s.\n",
85 data & XTKBD_KEY, data & XTKBD_RELEASE ? "released" : "pressed");
86 }
87 }
88 return IRQ_HANDLED;
89}
90
91static int xtkbd_connect(struct serio *serio, struct serio_driver *drv)
92{
93 struct xtkbd *xtkbd;
94 int i;
95 int err;
96
97 if (!(xtkbd = kmalloc(sizeof(struct xtkbd), GFP_KERNEL)))
98 return -ENOMEM;
99
100 memset(xtkbd, 0, sizeof(struct xtkbd));
101
102 xtkbd->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
103
104 xtkbd->serio = serio;
105
106 init_input_dev(&xtkbd->dev);
107 xtkbd->dev.keycode = xtkbd->keycode;
108 xtkbd->dev.keycodesize = sizeof(unsigned char);
109 xtkbd->dev.keycodemax = ARRAY_SIZE(xtkbd_keycode);
110 xtkbd->dev.private = xtkbd;
111
112 serio_set_drvdata(serio, xtkbd);
113
114 err = serio_open(serio, drv);
115 if (err) {
116 serio_set_drvdata(serio, NULL);
117 kfree(xtkbd);
118 return err;
119 }
120
121 memcpy(xtkbd->keycode, xtkbd_keycode, sizeof(xtkbd->keycode));
122 for (i = 0; i < 255; i++)
123 set_bit(xtkbd->keycode[i], xtkbd->dev.keybit);
124 clear_bit(0, xtkbd->dev.keybit);
125
126 sprintf(xtkbd->phys, "%s/input0", serio->phys);
127
128 xtkbd->dev.name = xtkbd_name;
129 xtkbd->dev.phys = xtkbd->phys;
130 xtkbd->dev.id.bustype = BUS_XTKBD;
131 xtkbd->dev.id.vendor = 0x0001;
132 xtkbd->dev.id.product = 0x0001;
133 xtkbd->dev.id.version = 0x0100;
134 xtkbd->dev.dev = &serio->dev;
135
136 input_register_device(&xtkbd->dev);
137
138 printk(KERN_INFO "input: %s on %s\n", xtkbd_name, serio->phys);
139
140 return 0;
141}
142
143static void xtkbd_disconnect(struct serio *serio)
144{
145 struct xtkbd *xtkbd = serio_get_drvdata(serio);
146
147 input_unregister_device(&xtkbd->dev);
148 serio_close(serio);
149 serio_set_drvdata(serio, NULL);
150 kfree(xtkbd);
151}
152
153static struct serio_device_id xtkbd_serio_ids[] = {
154 {
155 .type = SERIO_XT,
156 .proto = SERIO_ANY,
157 .id = SERIO_ANY,
158 .extra = SERIO_ANY,
159 },
160 { 0 }
161};
162
163MODULE_DEVICE_TABLE(serio, xtkbd_serio_ids);
164
165static struct serio_driver xtkbd_drv = {
166 .driver = {
167 .name = "xtkbd",
168 },
169 .description = DRIVER_DESC,
170 .id_table = xtkbd_serio_ids,
171 .interrupt = xtkbd_interrupt,
172 .connect = xtkbd_connect,
173 .disconnect = xtkbd_disconnect,
174};
175
176static int __init xtkbd_init(void)
177{
178 serio_register_driver(&xtkbd_drv);
179 return 0;
180}
181
182static void __exit xtkbd_exit(void)
183{
184 serio_unregister_driver(&xtkbd_drv);
185}
186
187module_init(xtkbd_init);
188module_exit(xtkbd_exit);