2 * Copyright (c) 2000 Justin Cormack
6 * Newton keyboard driver for Linux
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 * Should you need to contact me, the author, you can do so either by
25 * e-mail - mail your message to <j.cormack@doc.ic.ac.uk>, or by paper mail:
26 * Justin Cormack, 68 Dartmouth Park Road, London NW5 1SN, UK.
29 #include <linux/slab.h>
30 #include <linux/module.h>
31 #include <linux/input.h>
32 #include <linux/init.h>
33 #include <linux/serio.h>
35 #define DRIVER_DESC "Newton keyboard driver"
37 MODULE_AUTHOR("Justin Cormack <j.cormack@doc.ic.ac.uk>");
38 MODULE_DESCRIPTION(DRIVER_DESC);
39 MODULE_LICENSE("GPL");
42 #define NKBD_PRESS 0x80
44 static unsigned char nkbd_keycode[128] = {
45 KEY_A, KEY_S, KEY_D, KEY_F, KEY_H, KEY_G, KEY_Z, KEY_X,
46 KEY_C, KEY_V, 0, KEY_B, KEY_Q, KEY_W, KEY_E, KEY_R,
47 KEY_Y, KEY_T, KEY_1, KEY_2, KEY_3, KEY_4, KEY_6, KEY_5,
48 KEY_EQUAL, KEY_9, KEY_7, KEY_MINUS, KEY_8, KEY_0, KEY_RIGHTBRACE, KEY_O,
49 KEY_U, KEY_LEFTBRACE, KEY_I, KEY_P, KEY_ENTER, KEY_L, KEY_J, KEY_APOSTROPHE,
50 KEY_K, KEY_SEMICOLON, KEY_BACKSLASH, KEY_COMMA, KEY_SLASH, KEY_N, KEY_M, KEY_DOT,
51 KEY_TAB, KEY_SPACE, KEY_GRAVE, KEY_DELETE, 0, 0, 0, KEY_LEFTMETA,
52 KEY_LEFTSHIFT, KEY_CAPSLOCK, KEY_LEFTALT, KEY_LEFTCTRL, KEY_RIGHTSHIFT, 0, 0, 0,
53 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
54 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
55 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
56 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
57 KEY_LEFT, KEY_RIGHT, KEY_DOWN, KEY_UP, 0
61 unsigned char keycode[128];
62 struct input_dev *dev;
67 static irqreturn_t nkbd_interrupt(struct serio *serio,
68 unsigned char data, unsigned int flags, struct pt_regs *regs)
70 struct nkbd *nkbd = serio_get_drvdata(serio);
72 /* invalid scan codes are probably the init sequence, so we ignore them */
73 if (nkbd->keycode[data & NKBD_KEY]) {
74 input_regs(nkbd->dev, regs);
75 input_report_key(nkbd->dev, nkbd->keycode[data & NKBD_KEY], data & NKBD_PRESS);
76 input_sync(nkbd->dev);
79 else if (data == 0xe7) /* end of init sequence */
80 printk(KERN_INFO "input: %s on %s\n", nkbd->dev->name, serio->phys);
85 static int nkbd_connect(struct serio *serio, struct serio_driver *drv)
88 struct input_dev *input_dev;
92 nkbd = kzalloc(sizeof(struct nkbd), GFP_KERNEL);
93 input_dev = input_allocate_device();
94 if (!nkbd || !input_dev)
98 nkbd->dev = input_dev;
99 sprintf(nkbd->phys, "%s/input0", serio->phys);
100 memcpy(nkbd->keycode, nkbd_keycode, sizeof(nkbd->keycode));
102 input_dev->name = "Newton Keyboard";
103 input_dev->phys = nkbd->phys;
104 input_dev->id.bustype = BUS_RS232;
105 input_dev->id.vendor = SERIO_NEWTON;
106 input_dev->id.product = 0x0001;
107 input_dev->id.version = 0x0100;
108 input_dev->cdev.dev = &serio->dev;
109 input_dev->private = nkbd;
111 input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
112 input_dev->keycode = nkbd->keycode;
113 input_dev->keycodesize = sizeof(unsigned char);
114 input_dev->keycodemax = ARRAY_SIZE(nkbd_keycode);
115 for (i = 0; i < 128; i++)
116 set_bit(nkbd->keycode[i], input_dev->keybit);
117 clear_bit(0, input_dev->keybit);
119 serio_set_drvdata(serio, nkbd);
121 err = serio_open(serio, drv);
125 input_register_device(nkbd->dev);
128 fail: serio_set_drvdata(serio, NULL);
129 input_free_device(input_dev);
134 static void nkbd_disconnect(struct serio *serio)
136 struct nkbd *nkbd = serio_get_drvdata(serio);
139 serio_set_drvdata(serio, NULL);
140 input_unregister_device(nkbd->dev);
144 static struct serio_device_id nkbd_serio_ids[] = {
147 .proto = SERIO_NEWTON,
154 MODULE_DEVICE_TABLE(serio, nkbd_serio_ids);
156 static struct serio_driver nkbd_drv = {
160 .description = DRIVER_DESC,
161 .id_table = nkbd_serio_ids,
162 .interrupt = nkbd_interrupt,
163 .connect = nkbd_connect,
164 .disconnect = nkbd_disconnect,
167 static int __init nkbd_init(void)
169 serio_register_driver(&nkbd_drv);
173 static void __exit nkbd_exit(void)
175 serio_unregister_driver(&nkbd_drv);
178 module_init(nkbd_init);
179 module_exit(nkbd_exit);