/*
* Copyright (c) 2000 Justin Cormack
*/
/*
* Newton keyboard driver for Linux
*/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Should you need to contact me, the author, you can do so either by
* e-mail - mail your message to <j.cormack@doc.ic.ac.uk>, or by paper mail:
* Justin Cormack, 68 Dartmouth Park Road, London NW5 1SN, UK.
*/
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/input.h>
#include <linux/init.h>
#include <linux/serio.h>
#define DRIVER_DESC "Newton keyboard driver"
MODULE_AUTHOR("Justin Cormack <j.cormack@doc.ic.ac.uk>");
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
#define NKBD_KEY 0x7f
#define NKBD_PRESS 0x80
static unsigned char nkbd_keycode[128] = {
KEY_A, KEY_S, KEY_D, KEY_F, KEY_H, KEY_G, KEY_Z, KEY_X,
KEY_C, KEY_V, 0, KEY_B, KEY_Q, KEY_W, KEY_E, KEY_R,
KEY_Y, KEY_T, KEY_1, KEY_2, KEY_3, KEY_4, KEY_6, KEY_5,
KEY_EQUAL, KEY_9, KEY_7, KEY_MINUS, KEY_8, KEY_0, KEY_RIGHTBRACE, KEY_O,
KEY_U, KEY_LEFTBRACE, KEY_I, KEY_P, KEY_ENTER, KEY_L, KEY_J, KEY_APOSTROPHE,
KEY_K, KEY_SEMICOLON, KEY_BACKSLASH, KEY_COMMA, KEY_SLASH, KEY_N, KEY_M, KEY_DOT,
KEY_TAB, KEY_SPACE, KEY_GRAVE, KEY_DELETE, 0, 0, 0, KEY_LEFTMETA,
KEY_LEFTSHIFT, KEY_CAPSLOCK, KEY_LEFTALT, KEY_LEFTCTRL, KEY_RIGHTSHIFT, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
KEY_LEFT, KEY_RIGHT, KEY_DOWN, KEY_UP, 0
};
static char *nkbd_name = "Newton Keyboard";
struct nkbd {
unsigned char keycode[128];
struct input_dev dev;
struct serio *serio;
char phys[32];
};
static irqreturn_t nkbd_interrupt(struct serio *serio,
unsigned char data, unsigned int flags, struct pt_regs *regs)
{
struct nkbd *nkbd = serio_get_drvdata(serio);
/* invalid scan codes are probably the init sequence, so we ignore them */
if (nkbd->keycode[data & NKBD_KEY]) {
input_regs(&nkbd->dev, regs);
input_report_key(&nkbd->dev, nkbd->keycode[data & NKBD_KEY], data & NKBD_PRESS);
input_sync(&nkbd->dev);
}
else if (data == 0xe7) /* end of init sequence */
printk(KERN_INFO "input: %s on %s\n", nkbd_name, serio->phys);
return IRQ_HANDLED;
}
static int nkbd_connect(struct serio *serio, struct serio_driver *drv)
{
struct nkbd *nkbd;
int i;
int err;
if (!(nkbd = kmalloc(sizeof(struct nkbd), GFP_KERNEL)))
return -ENOMEM;
memset(nkbd, 0, sizeof(struct nkbd));
nkbd->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
nkbd->serio = serio;
init_input_dev(&nkbd->dev);
nkbd->dev.keycode = nkbd->keycode;
nkbd->dev.keycodesize = sizeof(unsigned char);
nkbd->dev.keycodemax = ARRAY_SIZE(nkbd_keycode);
nkbd->dev.private = nkbd;
serio_set_drvdata(serio, nkbd);
err = serio_open(serio, drv);
if (err) {
serio_set_drvdata(serio, NULL);
kfree(nkbd);
return err;
}
memcpy(nkbd->keycode, nkbd_keycode, sizeof(nkbd->keycode));
for (i = 0; i < 128; i++)
set_bit(nkbd->keycode[i], nkbd->dev.keybit);
clear_bit(0, nkbd->dev.keybit);
sprintf(nkbd->phys, "%s/input0", serio->phys);
nkbd->dev.name = nkbd_name;
nkbd->dev.phys = nkbd->phys;
nkbd->dev.id.bustype = BUS_RS232;
nkbd->dev.id.vendor = SERIO_NEWTON;
nkbd->dev.id.product = 0x0001;
nkbd->dev.id.version = 0x0100;
nkbd->dev.dev = &serio->dev;
input_register_device(&nkbd->dev);
printk(KERN_INFO "input: %s on %s\n", nkbd_name, serio->phys);
return 0;
}
static void nkbd_disconnect(struct serio *serio)
{
struct nkbd *nkbd = serio_get_drvdata(serio);
input_unregister_device(&nkbd->dev);
serio_close(serio);
serio_set_drvdata(serio, NULL);
kfree(nkbd);
}
static struct serio_device_id nkbd_serio_ids[] = {
{
.type = SERIO_RS232,
.proto = SERIO_NEWTON,
.id = SERIO_ANY,
.extra = SERIO_ANY,
},
{ 0 }
};
MODULE_DEVICE_TABLE(serio, nkbd_serio_ids);
static struct serio_driver nkbd_drv = {
.driver = {
.name = "newtonkbd",
},
.description = DRIVER_DESC,
.id_table = nkbd_serio_ids,
.interrupt = nkbd_interrupt,
.connect = nkbd_connect,
.disconnect = nkbd_disconnect,
};
static int __init nkbd_init(void)
{
serio_register_driver(&nkbd_drv);
return 0;
}
static void __exit nkbd_exit(void)
{
serio_unregister_driver(&nkbd_drv);
}
module_init(nkbd_init);
module_exit(nkbd_exit);
