/*
* $Id: sunkbd.c,v 1.14 2001/09/25 10:12:07 vojtech Exp $
*
* Copyright (c) 1999-2001 Vojtech Pavlik
*/
/*
* Sun 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 <vojtech@ucw.cz>, or by paper mail:
* Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
*/
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/serio.h>
#include <linux/workqueue.h>
MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
MODULE_DESCRIPTION("Sun keyboard driver");
MODULE_LICENSE("GPL");
static unsigned char sunkbd_keycode[128] = {
0,128,114,129,115, 59, 60, 68, 61, 87, 62, 88, 63,100, 64, 0,
65, 66, 67, 56,103,119, 99, 70,105,130,131,108,106, 1, 2, 3,
4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 41, 14,110,113, 98, 55,
116,132, 83,133,102, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,
26, 27,111,127, 71, 72, 73, 74,134,135,107, 0, 29, 30, 31, 32,
33, 34, 35, 36, 37, 38, 39, 40, 43, 28, 96, 75, 76, 77, 82,136,
104,137, 69, 42, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54,101,
79, 80, 81, 0, 0, 0,138, 58,125, 57,126,109, 86, 78
};
#define SUNKBD_CMD_RESET 0x1
#define SUNKBD_CMD_BELLON 0x2
#define SUNKBD_CMD_BELLOFF 0x3
#define SUNKBD_CMD_CLICK 0xa
#define SUNKBD_CMD_NOCLICK 0xb
#define SUNKBD_CMD_SETLED 0xe
#define SUNKBD_CMD_LAYOUT 0xf
#define SUNKBD_RET_RESET 0xff
#define SUNKBD_RET_ALLUP 0x7f
#define SUNKBD_RET_LAYOUT 0xfe
#define SUNKBD_LAYOUT_5_MASK 0x20
#define SUNKBD_RELEASE 0x80
#define SUNKBD_KEY 0x7f
/*
* Per-keyboard data.
*/
struct sunkbd {
unsigned char keycode[128];
struct input_dev dev;
struct serio *serio;
struct work_struct tq;
wait_queue_head_t wait;
char name[64];
char phys[32];
char type;
volatile char reset;
volatile char layout;
};
/*
* sunkbd_interrupt() is called by the low level driver when a character
* is received.
*/
static irqreturn_t sunkbd_interrupt(struct serio *serio,
unsigned char data, unsigned int flags, struct pt_regs *regs)
{
struct sunkbd* sunkbd = serio->private;
if (sunkbd->reset <= -1) { /* If cp[i] is 0xff, sunkbd->reset will stay -1. */
sunkbd->reset = data; /* The keyboard sends 0xff 0xff 0xID on powerup */
wake_up_interruptible(&sunkbd->wait);
goto out;
}
if (sunkbd->layout == -1) {
sunkbd->layout = data;
wake_up_interruptible(&sunkbd->wait);
goto out;
}
switch (data) {
case SUNKBD_RET_RESET:
schedule_work(&sunkbd->tq);
sunkbd->reset = -1;
break;
case SUNKBD_RET_LAYOUT:
sunkbd->layout = -1;
break;
case SUNKBD_RET_ALLUP: /* All keys released */
break;
default:
if (sunkbd->keycode[data & SUNKBD_KEY]) {
input_regs(&sunkbd->dev, regs);
input_report_key(&sunkbd->dev, sunkbd->keycode[data & SUNKBD_KEY], !(data & SUNKBD_RELEASE));
input_sync(&sunkbd->dev);
} else {
printk(KERN_WARNING "sunkbd.c: Unknown key (scancode %#x) %s.\n",
data & SUNKBD_KEY, data & SUNKBD_RELEASE ? "released" : "pressed");
}
}
out:
return IRQ_HANDLED;
}
/*
* sunkbd_event() handles events from the input module.
*/
static int sunkbd_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
{
struct sunkbd *sunkbd = dev->private;
switch (type) {
case EV_LED:
sunkbd->serio->write(sunkbd->serio, SUNKBD_CMD_SETLED);
sunkbd->serio->write(sunkbd->serio,
(!!test_bit(LED_CAPSL, dev->led) << 3) | (!!test_bit(LED_SCROLLL, dev->led) << 2) |
(!!test_bit(LED_COMPOSE, dev->led) << 1) | !!test_bit(LED_NUML, dev->led));
return 0;
case EV_SND:
switch (code) {
case SND_CLICK:
sunkbd->serio->write(sunkbd->serio, SUNKBD_CMD_NOCLICK - value);
return 0;
case SND_BELL:
sunkbd->serio->write(sunkbd->serio, SUNKBD_CMD_BELLOFF - value);
return 0;
}
break;
}
return -1;
}
/*
* sunkbd_initialize() checks for a Sun keyboard attached, and determines
* its type.
*/
static int sunkbd_initialize(struct sunkbd *sunkbd)
{
sunkbd->reset = -2;
sunkbd->serio->write(sunkbd->serio, SUNKBD_CMD_RESET);
wait_event_interruptible_timeout(sunkbd->wait, sunkbd->reset >= 0, HZ);
if (sunkbd->reset <0)
return -1;
sunkbd->type = sunkbd->reset;
if (sunkbd->type == 4) { /* Type 4 keyboard */
sunkbd->layout = -2;
sunkbd->serio->write(sunkbd->serio, SUNKBD_CMD_LAYOUT);
wait_event_interruptible_timeout(sunkbd->wait, sunkbd->layout >= 0, HZ/4);
if (sunkbd->layout < 0) return -1;
if (sunkbd->layout & SUNKBD_LAYOUT_5_MASK) sunkbd->type = 5;
}
return 0;
}
/*
* sunkbd_reinit() sets leds and beeps to a state the computer remembers they
* were in.
*/
static void sunkbd_reinit(void *data)
{
struct sunkbd *sunkbd = data;
wait_event_interruptible_timeout(sunkbd->wait, sunkbd->reset >= 0, HZ);
sunkbd->serio->write(sunkbd->serio, SUNKBD_CMD_SETLED);
sunkbd->serio->write(sunkbd->serio,
(!!test_bit(LED_CAPSL, sunkbd->dev.led) << 3) | (!!test_bit(LED_SCROLLL, sunkbd->dev.led) << 2) |
(!!test_bit(LED_COMPOSE, sunkbd->dev.led) << 1) | !!test_bit(LED_NUML, sunkbd->dev.led));
sunkbd->serio->write(sunkbd->serio, SUNKBD_CMD_NOCLICK - !!test_bit(SND_CLICK, sunkbd->dev.snd));
sunkbd->serio->write(sunkbd->serio, SUNKBD_CMD_BELLOFF - !!test_bit(SND_BELL, sunkbd->dev.snd));
}
/*
* sunkbd_connect() probes for a Sun keyboard and fills the necessary structures.
*/
static void sunkbd_connect(struct serio *serio, struct serio_dev *dev)
{
struct sunkbd *sunkbd;
int i;
if ((serio->type & SERIO_TYPE) != SERIO_RS232)
return;
if ((serio->type & SERIO_PROTO) && (serio->type & SERIO_PROTO) != SERIO_SUNKBD)
return;
if (!(sunkbd = kmalloc(sizeof(struct sunkbd), GFP_KERNEL)))
return;
memset(sunkbd, 0, sizeof(struct sunkbd));
init_input_dev(&sunkbd->dev);
init_waitqueue_head(&sunkbd->wait);
sunkbd->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_LED) | BIT(EV_SND) | BIT(EV_REP);
sunkbd->dev.ledbit[0] = BIT(LED_CAPSL) | BIT(LED_COMPOSE) | BIT(LED_SCROLLL) | BIT(LED_NUML);
sunkbd->dev.sndbit[0] = BIT(SND_CLICK) | BIT(SND_BELL);
sunkbd->serio = serio;
INIT_WORK(&sunkbd->tq, sunkbd_reinit, sunkbd);
sunkbd->dev.keycode = sunkbd->keycode;
sunkbd->dev.keycodesize = sizeof(unsigned char);
sunkbd->dev.keycodemax = ARRAY_SIZE(sunkbd_keycode);
sunkbd->dev.event = sunkbd_event;
sunkbd->dev.private = sunkbd;
serio->private = sunkbd;
if (serio_open(serio, dev)) {
kfree(sunkbd);
return;
}
if (sunkbd_initialize(sunkbd) < 0) {
serio_close(serio);
kfree(sunkbd);
return;
}
sprintf(sunkbd->name, "Sun Type %d keyboard", sunkbd->type);
memcpy(sunkbd->keycode, sunkbd_keycode, sizeof(sunkbd->keycode));
for (i = 0; i < 128; i++)
set_bit(sunkbd->keycode[i], sunkbd->dev.keybit);
clear_bit(0, sunkbd->dev.keybit);
sprintf(sunkbd->phys, "%s/input0", serio->phys);
sunkbd->dev.name = sunkbd->name;
sunkbd->dev.phys = sunkbd->phys;
sunkbd->dev.id.bustype = BUS_RS232;
sunkbd->dev.id.vendor = SERIO_SUNKBD;
sunkbd->dev.id.product = sunkbd->type;
sunkbd->dev.id.version = 0x0100;
input_register_device(&sunkbd->dev);
printk(KERN_INFO "input: %s on %s\n", sunkbd->name, serio->phys);
}
/*
* sunkbd_disconnect() unregisters and closes behind us.
*/
static void sunkbd_disconnect(struct serio *serio)
{
struct sunkbd *sunkbd = serio->private;
input_unregister_device(&sunkbd->dev);
serio_close(serio);
kfree(sunkbd);
}
static struct serio_dev sunkbd_dev = {
.interrupt = sunkbd_interrupt,
.connect = sunkbd_connect,
.disconnect = sunkbd_disconnect
};
/*
* The functions for insering/removing us as a module.
*/
int __init sunkbd_init(void)
{
serio_register_device(&sunkbd_dev);
return 0;
}
void __exit sunkbd_exit(void)
{
serio_unregister_device(&sunkbd_dev);
}
module_init(sunkbd_init);
module_exit(sunkbd_exit);
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