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/*
* graphire.c Version 0.1
*
* Copyright (c) 1999 Vojtech Pavlik
*
* USB Wacom Graphire tablet support
*
* Sponsored by SuSE
*/
/*
* 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@suse.cz>, or by paper mail:
* Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
*/
#include <linux/kernel.h>
#include <linux/malloc.h>
#include <linux/input.h>
#include <linux/module.h>
#include "usb.h"
MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
/*
* Thanks for the following information to: Andreas Bach Aaen <abach@mail1.stofanet.dk>
*
* The input report:
*
* byte 0: report ID (2)
* byte 1: bit7 mouse/pen/rubber near
* bit5-6 0 - pen, 1 - rubber, 2 - mouse
* bit4 1 ?
* bit3 0 ?
* bit2 mouse middle button / pen button2
* bit1 mouse right button / pen button1
* bit0 mouse left button / pen tip / rubber
* byte 2: X low bits
* byte 3: X high bits
* byte 4: Y low bits
* byte 5: Y high bits
* byte 6: pen pressure low bits / mouse wheel
* byte 7: pen presure high bits / mouse distance
*
* There are also two single-byte feature reports (2 and 3).
*/
#define USB_VENDOR_ID_WACOM 0xffff /* FIXME */
#define USB_DEVICE_ID_WACOM_GRAPHIRE 0xffff /* FIXME */
struct graphire {
signed char data[8];
int oldx, oldy;
struct input_dev dev;
struct urb irq;
};
static void graphire_irq(struct urb *urb)
{
struct graphire *graphire = urb->context;
unsigned char *data = graphire->data;
struct input_dev *dev = &graphire->dev;
if (urb->status) return;
if (data[0] != 2)
dbg("received unknown report #%d", data[0]);
input_report_abs(dev, ABS_X, data[2] | ((__u32)data[3] << 8));
input_report_abs(dev, ABS_Y, data[4] | ((__u32)data[5] << 8));
input_report_key(dev, BTN_NEAR, !!(data[1] & 0x80));
switch ((data[1] >> 5) & 3) {
case 0: /* Pen */
input_report_key(dev, BTN_PEN, !!(data[1] & 0x01));
input_report_key(dev, BTN_PEN_SIDE, !!(data[1] & 0x02));
input_report_key(dev, BTN_PEN_SIDE2, !!(data[1] & 0x04));
input_report_abs(dev, ABS_PRESSURE, data[6] | ((__u32)data[7] << 8));
break;
case 1: /* Rubber */
input_report_key(dev, BTN_RUBBER, !!(data[1] & 0x01));
input_report_key(dev, BTN_PEN_SIDE, !!(data[1] & 0x02));
input_report_key(dev, BTN_PEN_SIDE2, !!(data[1] & 0x04));
input_report_abs(dev, ABS_PRESSURE, data[6] | ((__u32)data[7] << 8));
break;
case 2: /* Mouse */
input_report_key(dev, BTN_LEFT, !!(data[0] & 0x01));
input_report_key(dev, BTN_RIGHT, !!(data[0] & 0x02));
input_report_key(dev, BTN_MIDDLE, !!(data[0] & 0x04));
input_report_abs(dev, ABS_DISTANCE, data[7]);
if (data[1] & 0x80) {
input_report_rel(dev, REL_X, dev->abs[ABS_X] - graphire->oldx);
input_report_rel(dev, REL_Y, dev->abs[ABS_Y] - graphire->oldy);
}
input_report_rel(dev, REL_WHEEL, (signed char) data[6]);
break;
}
graphire->oldx = dev->abs[ABS_X];
graphire->oldy = dev->abs[ABS_Y];
}
static void *graphire_probe(struct usb_device *dev, unsigned int ifnum)
{
struct usb_endpoint_descriptor *endpoint;
struct graphire *graphire;
if (dev->descriptor.idVendor != USB_VENDOR_ID_WACOM ||
dev->descriptor.idProduct != USB_DEVICE_ID_WACOM_GRAPHIRE)
return NULL;
endpoint = dev->config[0].interface[ifnum].altsetting[0].endpoint + 0;
if (!(graphire = kmalloc(sizeof(struct graphire), GFP_KERNEL))) return NULL;
memset(graphire, 0, sizeof(struct graphire));
graphire->dev.evbit[0] |= BIT(EV_KEY) | BIT(EV_REL) | BIT(EV_ABS);
graphire->dev.keybit[LONG(BTN_MOUSE)] |= BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
graphire->dev.keybit[LONG(BTN_DIGI)] |= BIT(BTN_PEN) | BIT(BTN_RUBBER);
graphire->dev.keybit[LONG(BTN_DIGI)] |= BIT(BTN_PEN_SIDE) | BIT(BTN_PEN_SIDE2) | BIT(BTN_NEAR);
graphire->dev.relbit[0] |= BIT(REL_X) | BIT(REL_Y) | BIT(REL_WHEEL);
graphire->dev.absbit[0] |= BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE) | BIT(ABS_DISTANCE);
FILL_INT_URB(&graphire->irq, dev, usb_rcvintpipe(dev, endpoint->bEndpointAddress),
graphire->data, 8, graphire_irq, graphire, endpoint->bInterval);
if (usb_submit_urb(&graphire->irq)) {
kfree(graphire);
return NULL;
}
input_register_device(&graphire->dev);
printk(KERN_INFO "input%d: Wacom Graphire USB\n", graphire->dev.number);
return graphire;
}
static void graphire_disconnect(struct usb_device *dev, void *ptr)
{
struct graphire *graphire = ptr;
usb_unlink_urb(&graphire->irq);
input_unregister_device(&graphire->dev);
kfree(graphire);
}
static struct usb_driver graphire_driver = {
name: "graphire",
probe: graphire_probe,
disconnect: graphire_disconnect,
};
#ifdef MODULE
void cleanup_module(void)
{
usb_deregister(&graphire_driver);
}
int init_module(void)
#else
int graphire_init(void)
#endif
{
usb_register(&graphire_driver);
return 0;
}
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