diff options
Diffstat (limited to 'drivers/usb/graphire.c')
| -rw-r--r-- | drivers/usb/graphire.c | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/drivers/usb/graphire.c b/drivers/usb/graphire.c new file mode 100644 index 000000000..cfda14d5c --- /dev/null +++ b/drivers/usb/graphire.c @@ -0,0 +1,186 @@ +/* + * 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; +} |