1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
371 lines
9.1 KiB
C
371 lines
9.1 KiB
C
/*
|
|
* $Id: sermouse.c,v 1.17 2002/03/13 10:03:43 vojtech Exp $
|
|
*
|
|
* Copyright (c) 1999-2001 Vojtech Pavlik
|
|
*/
|
|
|
|
/*
|
|
* Serial mouse 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/module.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/input.h>
|
|
#include <linux/config.h>
|
|
#include <linux/serio.h>
|
|
#include <linux/init.h>
|
|
|
|
#define DRIVER_DESC "Serial mouse driver"
|
|
|
|
MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static char *sermouse_protocols[] = { "None", "Mouse Systems Mouse", "Sun Mouse", "Microsoft Mouse",
|
|
"Logitech M+ Mouse", "Microsoft MZ Mouse", "Logitech MZ+ Mouse",
|
|
"Logitech MZ++ Mouse"};
|
|
|
|
struct sermouse {
|
|
struct input_dev dev;
|
|
signed char buf[8];
|
|
unsigned char count;
|
|
unsigned char type;
|
|
unsigned long last;
|
|
char phys[32];
|
|
};
|
|
|
|
/*
|
|
* sermouse_process_msc() analyzes the incoming MSC/Sun bytestream and
|
|
* applies some prediction to the data, resulting in 96 updates per
|
|
* second, which is as good as a PS/2 or USB mouse.
|
|
*/
|
|
|
|
static void sermouse_process_msc(struct sermouse *sermouse, signed char data, struct pt_regs *regs)
|
|
{
|
|
struct input_dev *dev = &sermouse->dev;
|
|
signed char *buf = sermouse->buf;
|
|
|
|
input_regs(dev, regs);
|
|
|
|
switch (sermouse->count) {
|
|
|
|
case 0:
|
|
if ((data & 0xf8) != 0x80) return;
|
|
input_report_key(dev, BTN_LEFT, !(data & 4));
|
|
input_report_key(dev, BTN_RIGHT, !(data & 1));
|
|
input_report_key(dev, BTN_MIDDLE, !(data & 2));
|
|
break;
|
|
|
|
case 1:
|
|
case 3:
|
|
input_report_rel(dev, REL_X, data / 2);
|
|
input_report_rel(dev, REL_Y, -buf[1]);
|
|
buf[0] = data - data / 2;
|
|
break;
|
|
|
|
case 2:
|
|
case 4:
|
|
input_report_rel(dev, REL_X, buf[0]);
|
|
input_report_rel(dev, REL_Y, buf[1] - data);
|
|
buf[1] = data / 2;
|
|
break;
|
|
}
|
|
|
|
input_sync(dev);
|
|
|
|
if (++sermouse->count == (5 - ((sermouse->type == SERIO_SUN) << 1)))
|
|
sermouse->count = 0;
|
|
}
|
|
|
|
/*
|
|
* sermouse_process_ms() anlyzes the incoming MS(Z/+/++) bytestream and
|
|
* generates events. With prediction it gets 80 updates/sec, assuming
|
|
* standard 3-byte packets and 1200 bps.
|
|
*/
|
|
|
|
static void sermouse_process_ms(struct sermouse *sermouse, signed char data, struct pt_regs *regs)
|
|
{
|
|
struct input_dev *dev = &sermouse->dev;
|
|
signed char *buf = sermouse->buf;
|
|
|
|
if (data & 0x40) sermouse->count = 0;
|
|
|
|
input_regs(dev, regs);
|
|
|
|
switch (sermouse->count) {
|
|
|
|
case 0:
|
|
buf[1] = data;
|
|
input_report_key(dev, BTN_LEFT, (data >> 5) & 1);
|
|
input_report_key(dev, BTN_RIGHT, (data >> 4) & 1);
|
|
break;
|
|
|
|
case 1:
|
|
buf[2] = data;
|
|
data = (signed char) (((buf[1] << 6) & 0xc0) | (data & 0x3f));
|
|
input_report_rel(dev, REL_X, data / 2);
|
|
input_report_rel(dev, REL_Y, buf[4]);
|
|
buf[3] = data - data / 2;
|
|
break;
|
|
|
|
case 2:
|
|
/* Guessing the state of the middle button on 3-button MS-protocol mice - ugly. */
|
|
if ((sermouse->type == SERIO_MS) && !data && !buf[2] && !((buf[0] & 0xf0) ^ buf[1]))
|
|
input_report_key(dev, BTN_MIDDLE, !test_bit(BTN_MIDDLE, dev->key));
|
|
buf[0] = buf[1];
|
|
|
|
data = (signed char) (((buf[1] << 4) & 0xc0) | (data & 0x3f));
|
|
input_report_rel(dev, REL_X, buf[3]);
|
|
input_report_rel(dev, REL_Y, data - buf[4]);
|
|
buf[4] = data / 2;
|
|
break;
|
|
|
|
case 3:
|
|
|
|
switch (sermouse->type) {
|
|
|
|
case SERIO_MS:
|
|
sermouse->type = SERIO_MP;
|
|
|
|
case SERIO_MP:
|
|
if ((data >> 2) & 3) break; /* M++ Wireless Extension packet. */
|
|
input_report_key(dev, BTN_MIDDLE, (data >> 5) & 1);
|
|
input_report_key(dev, BTN_SIDE, (data >> 4) & 1);
|
|
break;
|
|
|
|
case SERIO_MZP:
|
|
case SERIO_MZPP:
|
|
input_report_key(dev, BTN_SIDE, (data >> 5) & 1);
|
|
|
|
case SERIO_MZ:
|
|
input_report_key(dev, BTN_MIDDLE, (data >> 4) & 1);
|
|
input_report_rel(dev, REL_WHEEL, (data & 8) - (data & 7));
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
case 4:
|
|
case 6: /* MZ++ packet type. We can get these bytes for M++ too but we ignore them later. */
|
|
buf[1] = (data >> 2) & 0x0f;
|
|
break;
|
|
|
|
case 5:
|
|
case 7: /* Ignore anything besides MZ++ */
|
|
if (sermouse->type != SERIO_MZPP) break;
|
|
|
|
switch (buf[1]) {
|
|
|
|
case 1: /* Extra mouse info */
|
|
|
|
input_report_key(dev, BTN_SIDE, (data >> 4) & 1);
|
|
input_report_key(dev, BTN_EXTRA, (data >> 5) & 1);
|
|
input_report_rel(dev, data & 0x80 ? REL_HWHEEL : REL_WHEEL, (data & 7) - (data & 8));
|
|
|
|
break;
|
|
|
|
default: /* We don't decode anything else yet. */
|
|
|
|
printk(KERN_WARNING
|
|
"sermouse.c: Received MZ++ packet %x, don't know how to handle.\n", buf[1]);
|
|
break;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
input_sync(dev);
|
|
|
|
sermouse->count++;
|
|
}
|
|
|
|
/*
|
|
* sermouse_interrupt() handles incoming characters, either gathering them into
|
|
* packets or passing them to the command routine as command output.
|
|
*/
|
|
|
|
static irqreturn_t sermouse_interrupt(struct serio *serio,
|
|
unsigned char data, unsigned int flags, struct pt_regs *regs)
|
|
{
|
|
struct sermouse *sermouse = serio_get_drvdata(serio);
|
|
|
|
if (time_after(jiffies, sermouse->last + HZ/10)) sermouse->count = 0;
|
|
sermouse->last = jiffies;
|
|
|
|
if (sermouse->type > SERIO_SUN)
|
|
sermouse_process_ms(sermouse, data, regs);
|
|
else
|
|
sermouse_process_msc(sermouse, data, regs);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/*
|
|
* sermouse_disconnect() cleans up after we don't want talk
|
|
* to the mouse anymore.
|
|
*/
|
|
|
|
static void sermouse_disconnect(struct serio *serio)
|
|
{
|
|
struct sermouse *sermouse = serio_get_drvdata(serio);
|
|
|
|
input_unregister_device(&sermouse->dev);
|
|
serio_close(serio);
|
|
serio_set_drvdata(serio, NULL);
|
|
kfree(sermouse);
|
|
}
|
|
|
|
/*
|
|
* sermouse_connect() is a callback form the serio module when
|
|
* an unhandled serio port is found.
|
|
*/
|
|
|
|
static int sermouse_connect(struct serio *serio, struct serio_driver *drv)
|
|
{
|
|
struct sermouse *sermouse;
|
|
unsigned char c;
|
|
int err;
|
|
|
|
if (!serio->id.proto || serio->id.proto > SERIO_MZPP)
|
|
return -ENODEV;
|
|
|
|
if (!(sermouse = kmalloc(sizeof(struct sermouse), GFP_KERNEL)))
|
|
return -ENOMEM;
|
|
|
|
memset(sermouse, 0, sizeof(struct sermouse));
|
|
|
|
init_input_dev(&sermouse->dev);
|
|
sermouse->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
|
|
sermouse->dev.keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT);
|
|
sermouse->dev.relbit[0] = BIT(REL_X) | BIT(REL_Y);
|
|
sermouse->dev.private = sermouse;
|
|
|
|
sermouse->type = serio->id.proto;
|
|
c = serio->id.extra;
|
|
|
|
if (c & 0x01) set_bit(BTN_MIDDLE, sermouse->dev.keybit);
|
|
if (c & 0x02) set_bit(BTN_SIDE, sermouse->dev.keybit);
|
|
if (c & 0x04) set_bit(BTN_EXTRA, sermouse->dev.keybit);
|
|
if (c & 0x10) set_bit(REL_WHEEL, sermouse->dev.relbit);
|
|
if (c & 0x20) set_bit(REL_HWHEEL, sermouse->dev.relbit);
|
|
|
|
sprintf(sermouse->phys, "%s/input0", serio->phys);
|
|
|
|
sermouse->dev.name = sermouse_protocols[sermouse->type];
|
|
sermouse->dev.phys = sermouse->phys;
|
|
sermouse->dev.id.bustype = BUS_RS232;
|
|
sermouse->dev.id.vendor = sermouse->type;
|
|
sermouse->dev.id.product = c;
|
|
sermouse->dev.id.version = 0x0100;
|
|
sermouse->dev.dev = &serio->dev;
|
|
|
|
serio_set_drvdata(serio, sermouse);
|
|
|
|
err = serio_open(serio, drv);
|
|
if (err) {
|
|
serio_set_drvdata(serio, NULL);
|
|
kfree(sermouse);
|
|
return err;
|
|
}
|
|
|
|
input_register_device(&sermouse->dev);
|
|
|
|
printk(KERN_INFO "input: %s on %s\n", sermouse_protocols[sermouse->type], serio->phys);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct serio_device_id sermouse_serio_ids[] = {
|
|
{
|
|
.type = SERIO_RS232,
|
|
.proto = SERIO_MSC,
|
|
.id = SERIO_ANY,
|
|
.extra = SERIO_ANY,
|
|
},
|
|
{
|
|
.type = SERIO_RS232,
|
|
.proto = SERIO_SUN,
|
|
.id = SERIO_ANY,
|
|
.extra = SERIO_ANY,
|
|
},
|
|
{
|
|
.type = SERIO_RS232,
|
|
.proto = SERIO_MS,
|
|
.id = SERIO_ANY,
|
|
.extra = SERIO_ANY,
|
|
},
|
|
{
|
|
.type = SERIO_RS232,
|
|
.proto = SERIO_MP,
|
|
.id = SERIO_ANY,
|
|
.extra = SERIO_ANY,
|
|
},
|
|
{
|
|
.type = SERIO_RS232,
|
|
.proto = SERIO_MZ,
|
|
.id = SERIO_ANY,
|
|
.extra = SERIO_ANY,
|
|
},
|
|
{
|
|
.type = SERIO_RS232,
|
|
.proto = SERIO_MZP,
|
|
.id = SERIO_ANY,
|
|
.extra = SERIO_ANY,
|
|
},
|
|
{
|
|
.type = SERIO_RS232,
|
|
.proto = SERIO_MZPP,
|
|
.id = SERIO_ANY,
|
|
.extra = SERIO_ANY,
|
|
},
|
|
{ 0 }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(serio, sermouse_serio_ids);
|
|
|
|
static struct serio_driver sermouse_drv = {
|
|
.driver = {
|
|
.name = "sermouse",
|
|
},
|
|
.description = DRIVER_DESC,
|
|
.id_table = sermouse_serio_ids,
|
|
.interrupt = sermouse_interrupt,
|
|
.connect = sermouse_connect,
|
|
.disconnect = sermouse_disconnect,
|
|
};
|
|
|
|
static int __init sermouse_init(void)
|
|
{
|
|
serio_register_driver(&sermouse_drv);
|
|
return 0;
|
|
}
|
|
|
|
static void __exit sermouse_exit(void)
|
|
{
|
|
serio_unregister_driver(&sermouse_drv);
|
|
}
|
|
|
|
module_init(sermouse_init);
|
|
module_exit(sermouse_exit);
|