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/serio.h>
34 #define DRIVER_DESC "Newton keyboard driver"
36 MODULE_AUTHOR("Justin Cormack <j.cormack@doc.ic.ac.uk>");
37 MODULE_DESCRIPTION(DRIVER_DESC);
38 MODULE_LICENSE("GPL");
41 #define NKBD_PRESS 0x80
43 static unsigned char nkbd_keycode[128] = {
44 KEY_A, KEY_S, KEY_D, KEY_F, KEY_H, KEY_G, KEY_Z, KEY_X,
45 KEY_C, KEY_V, 0, KEY_B, KEY_Q, KEY_W, KEY_E, KEY_R,
46 KEY_Y, KEY_T, KEY_1, KEY_2, KEY_3, KEY_4, KEY_6, KEY_5,
47 KEY_EQUAL, KEY_9, KEY_7, KEY_MINUS, KEY_8, KEY_0, KEY_RIGHTBRACE, KEY_O,
48 KEY_U, KEY_LEFTBRACE, KEY_I, KEY_P, KEY_ENTER, KEY_L, KEY_J, KEY_APOSTROPHE,
49 KEY_K, KEY_SEMICOLON, KEY_BACKSLASH, KEY_COMMA, KEY_SLASH, KEY_N, KEY_M, KEY_DOT,
50 KEY_TAB, KEY_SPACE, KEY_GRAVE, KEY_DELETE, 0, 0, 0, KEY_LEFTMETA,
51 KEY_LEFTSHIFT, KEY_CAPSLOCK, KEY_LEFTALT, KEY_LEFTCTRL, KEY_RIGHTSHIFT, 0, 0, 0,
52 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 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,
56 KEY_LEFT, KEY_RIGHT, KEY_DOWN, KEY_UP, 0
60 unsigned char keycode[128];
61 struct input_dev *dev;
66 static irqreturn_t nkbd_interrupt(struct serio *serio,
67 unsigned char data, unsigned int flags)
69 struct nkbd *nkbd = serio_get_drvdata(serio);
71 /* invalid scan codes are probably the init sequence, so we ignore them */
72 if (nkbd->keycode[data & NKBD_KEY]) {
73 input_report_key(nkbd->dev, nkbd->keycode[data & NKBD_KEY], data & NKBD_PRESS);
74 input_sync(nkbd->dev);
77 else if (data == 0xe7) /* end of init sequence */
78 printk(KERN_INFO "input: %s on %s\n", nkbd->dev->name, serio->phys);
83 static int nkbd_connect(struct serio *serio, struct serio_driver *drv)
86 struct input_dev *input_dev;
90 nkbd = kzalloc(sizeof(struct nkbd), GFP_KERNEL);
91 input_dev = input_allocate_device();
92 if (!nkbd || !input_dev)
96 nkbd->dev = input_dev;
97 snprintf(nkbd->phys, sizeof(nkbd->phys), "%s/input0", serio->phys);
98 memcpy(nkbd->keycode, nkbd_keycode, sizeof(nkbd->keycode));
100 input_dev->name = "Newton Keyboard";
101 input_dev->phys = nkbd->phys;
102 input_dev->id.bustype = BUS_RS232;
103 input_dev->id.vendor = SERIO_NEWTON;
104 input_dev->id.product = 0x0001;
105 input_dev->id.version = 0x0100;
106 input_dev->dev.parent = &serio->dev;
108 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
109 input_dev->keycode = nkbd->keycode;
110 input_dev->keycodesize = sizeof(unsigned char);
111 input_dev->keycodemax = ARRAY_SIZE(nkbd_keycode);
112 for (i = 0; i < 128; i++)
113 set_bit(nkbd->keycode[i], input_dev->keybit);
114 clear_bit(0, input_dev->keybit);
116 serio_set_drvdata(serio, nkbd);
118 err = serio_open(serio, drv);
122 err = input_register_device(nkbd->dev);
128 fail3: serio_close(serio);
129 fail2: serio_set_drvdata(serio, NULL);
130 fail1: input_free_device(input_dev);
135 static void nkbd_disconnect(struct serio *serio)
137 struct nkbd *nkbd = serio_get_drvdata(serio);
140 serio_set_drvdata(serio, NULL);
141 input_unregister_device(nkbd->dev);
145 static struct serio_device_id nkbd_serio_ids[] = {
148 .proto = SERIO_NEWTON,
155 MODULE_DEVICE_TABLE(serio, nkbd_serio_ids);
157 static struct serio_driver nkbd_drv = {
161 .description = DRIVER_DESC,
162 .id_table = nkbd_serio_ids,
163 .interrupt = nkbd_interrupt,
164 .connect = nkbd_connect,
165 .disconnect = nkbd_disconnect,
168 module_serio_driver(nkbd_drv);