aiptek.c
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上传日期:2013-04-10
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- /*
- * Native support for the Aiptek 8000U
- *
- * Copyright (c) 2001 Chris Atenasio <chris@crud.net>
- *
- * based on wacom.c by
- * Vojtech Pavlik <vojtech@suse.cz>
- * Andreas Bach Aaen <abach@stofanet.dk>
- * Clifford Wolf <clifford@clifford.at>
- * Sam Mosel <sam.mosel@computer.org>
- * James E. Blair <corvus@gnu.org>
- * Daniel Egger <egger@suse.de>
- *
- *
- * Many thanks to Oliver Kuechemann for his support.
- *
- * ChangeLog:
- * v0.1 - Initial release
- * v0.2 - Hack to get around fake event 28's.
- * v0.3 - Make URB dynamic (Bryan W. Headley, Jun-8-2002)
- */
- /*
- * 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
- */
- #include <linux/kernel.h>
- #include <linux/slab.h>
- #include <linux/input.h>
- #include <linux/module.h>
- #include <linux/init.h>
- #include <linux/usb.h>
- /*
- * Version Information
- */
- #define DRIVER_VERSION "v0.3"
- #define DRIVER_AUTHOR "Chris Atenasio <chris@crud.net>"
- #define DRIVER_DESC "USB Aiptek 6000U/8000U tablet driver (Linux 2.4.x)"
- MODULE_AUTHOR(DRIVER_AUTHOR);
- MODULE_DESCRIPTION(DRIVER_DESC);
- MODULE_LICENSE("GPL");
- /*
- * Aiptek status packet:
- *
- * bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0
- * byte0 0 0 0 0 0 0 1 0
- * byte1 X7 X6 X5 X4 X3 X2 X1 X0
- * byte2 X15 X14 X13 X12 X11 X10 X9 X8
- * byte3 Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0
- * byte4 Y15 Y14 Y13 Y12 Y11 Y10 Y9 Y8
- * byte5 * * * BS2 BS1 Tip DV IR
- * byte6 P7 P6 P5 P4 P3 P2 P1 P0
- * byte7 P15 P14 P13 P12 P11 P10 P9 P8
- *
- * IR: In Range = Proximity on
- * DV = Data Valid
- *
- *
- * Command Summary:
- *
- * Command/Data Description Return Bytes Return Value
- * 0x10/0x00 SwitchToMouse 0
- * 0x10/0x01 SwitchToTablet 0
- * 0x18/0x04 Resolution500LPI 0
- * 0x17/0x00 FilterOn 0
- * 0x12/0xFF AutoGainOn 0
- * 0x01/0x00 GetXExtension 2 MaxX
- * 0x01/0x01 GetYExtension 2 MaxY
- * 0x02/0x00 GetModelCode 2 ModelCode = LOBYTE
- * 0x03/0x00 GetODMCode 2 ODMCode
- * 0x08/0x00 GetPressureLevels 2 =512
- * 0x04/0x00 GetFirmwareVersion 2 Firmware Version
- *
- *
- * To initialize the tablet:
- *
- * (1) Send command Resolution500LPI
- * (2) Option Commands (GetXExtension, GetYExtension)
- * (3) Send command SwitchToTablet
- */
- #define USB_VENDOR_ID_AIPTEK 0x08ca
- struct aiptek_features {
- char *name;
- int pktlen;
- int x_max;
- int y_max;
- int pressure_min;
- int pressure_max;
- void (*irq) (struct urb * urb);
- unsigned long evbit;
- unsigned long absbit;
- unsigned long relbit;
- unsigned long btnbit;
- unsigned long digibit;
- };
- struct aiptek {
- signed char data[10];
- struct input_dev dev;
- struct usb_device *usbdev;
- struct urb *irq;
- struct aiptek_features *features;
- int tool;
- int open;
- };
- static void
- aiptek_irq(struct urb *urb)
- {
- struct aiptek *aiptek = urb->context;
- unsigned char *data = aiptek->data;
- struct input_dev *dev = &aiptek->dev;
- int x;
- int y;
- int pressure;
- int proximity;
- if (urb->status)
- return;
- if ((data[0] & 2) == 0) {
- dbg("received unknown report #%d", data[0]);
- }
- proximity = data[5] & 0x01;
- input_report_key(dev, BTN_TOOL_PEN, proximity);
- x = ((__u32) data[1]) | ((__u32) data[2] << 8);
- y = ((__u32) data[3]) | ((__u32) data[4] << 8);
- pressure = ((__u32) data[6]) | ((__u32) data[7] << 8);
- pressure -= aiptek->features->pressure_min;
- if (pressure < 0) {
- pressure = 0;
- }
- if (proximity) {
- input_report_abs(dev, ABS_X, x);
- input_report_abs(dev, ABS_Y, y);
- input_report_abs(dev, ABS_PRESSURE, pressure);
- input_report_key(dev, BTN_TOUCH, data[5] & 0x04);
- input_report_key(dev, BTN_STYLUS, data[5] & 0x08);
- input_report_key(dev, BTN_STYLUS2, data[5] & 0x10);
- }
- }
- struct aiptek_features aiptek_features[] = {
- {"Aiptek 6000U/8000U",
- 8, 3000, 2250, 26, 511, aiptek_irq, 0, 0, 0, 0},
- {NULL, 0}
- };
- struct usb_device_id aiptek_ids[] = {
- {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x20), driver_info:0},
- {}
- };
- MODULE_DEVICE_TABLE(usb, aiptek_ids);
- static int
- aiptek_open(struct input_dev *dev)
- {
- struct aiptek *aiptek = dev->private;
- if (aiptek->open++)
- return 0;
- aiptek->irq->dev = aiptek->usbdev;
- if (usb_submit_urb(aiptek->irq))
- return -EIO;
- return 0;
- }
- static void
- aiptek_close(struct input_dev *dev)
- {
- struct aiptek *aiptek = dev->private;
- if (!--aiptek->open)
- usb_unlink_urb(aiptek->irq);
- }
- static void
- aiptek_command(struct usb_device *dev, unsigned int ifnum,
- unsigned char command, unsigned char data)
- {
- __u8 buf[3];
- buf[0] = 4;
- buf[1] = command;
- buf[2] = data;
- if (usb_set_report(dev, ifnum, 3, 2, buf, 3) != 3) {
- dbg("aiptek_command: 0x%x 0x%xn", command, data);
- }
- }
- static void*
- aiptek_probe(struct usb_device *dev, unsigned int ifnum,
- const struct usb_device_id *id)
- {
- struct usb_endpoint_descriptor *endpoint;
- struct aiptek *aiptek;
- if (!(aiptek = kmalloc(sizeof (struct aiptek), GFP_KERNEL)))
- return NULL;
- memset(aiptek, 0, sizeof (struct aiptek));
- aiptek->irq = usb_alloc_urb(0);
- if (!aiptek->irq) {
- kfree(aiptek);
- return NULL;
- }
- // Resolution500LPI
- aiptek_command(dev, ifnum, 0x18, 0x04);
- // SwitchToTablet
- aiptek_command(dev, ifnum, 0x10, 0x01);
- aiptek->features = aiptek_features + id->driver_info;
- aiptek->dev.evbit[0] |= BIT(EV_KEY) | BIT(EV_ABS) | BIT(EV_MSC) |
- aiptek->features->evbit;
- aiptek->dev.absbit[0] |= BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE) |
- BIT(ABS_MISC) | aiptek->features->absbit;
- aiptek->dev.relbit[0] |= aiptek->features->relbit;
- aiptek->dev.keybit[LONG(BTN_LEFT)] |= BIT(BTN_LEFT) | BIT(BTN_RIGHT) |
- BIT(BTN_MIDDLE) | aiptek->features->btnbit;
- aiptek->dev.keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_PEN) |
- BIT(BTN_TOOL_MOUSE) | BIT(BTN_TOUCH) |
- BIT(BTN_STYLUS) | BIT(BTN_STYLUS2) | aiptek->features->digibit;
- aiptek->dev.mscbit[0] = BIT(MSC_SERIAL);
- aiptek->dev.absmax[ABS_X] = aiptek->features->x_max;
- aiptek->dev.absmax[ABS_Y] = aiptek->features->y_max;
- aiptek->dev.absmax[ABS_PRESSURE] = aiptek->features->pressure_max -
- aiptek->features->pressure_min;
- aiptek->dev.absfuzz[ABS_X] = 0;
- aiptek->dev.absfuzz[ABS_Y] = 0;
- aiptek->dev.private = aiptek;
- aiptek->dev.open = aiptek_open;
- aiptek->dev.close = aiptek_close;
- aiptek->dev.name = aiptek->features->name;
- aiptek->dev.idbus = BUS_USB;
- aiptek->dev.idvendor = dev->descriptor.idVendor;
- aiptek->dev.idproduct = dev->descriptor.idProduct;
- aiptek->dev.idversion = dev->descriptor.bcdDevice;
- aiptek->usbdev = dev;
- endpoint = dev->config[0].interface[ifnum].altsetting[0].endpoint + 0;
- FILL_INT_URB(aiptek->irq,
- dev,
- usb_rcvintpipe(dev, endpoint->bEndpointAddress),
- aiptek->data,
- aiptek->features->pktlen,
- aiptek->features->irq,
- aiptek,
- endpoint->bInterval);
- input_register_device(&aiptek->dev);
- printk(KERN_INFO "input%d: %s on usb%d:%d.%dn",
- aiptek->dev.number, aiptek->features->name, dev->bus->busnum,
- dev->devnum, ifnum);
- return aiptek;
- }
- static void
- aiptek_disconnect(struct usb_device *dev, void *ptr)
- {
- struct aiptek *aiptek = ptr;
- usb_unlink_urb(aiptek->irq);
- input_unregister_device(&aiptek->dev);
- usb_free_urb(aiptek->irq);
- kfree(aiptek);
- }
- static struct usb_driver aiptek_driver = {
- name:"aiptek",
- probe:aiptek_probe,
- disconnect:aiptek_disconnect,
- id_table:aiptek_ids,
- };
- static int __init
- aiptek_init(void)
- {
- usb_register(&aiptek_driver);
- info(DRIVER_VERSION " " DRIVER_AUTHOR);
- info(DRIVER_DESC);
- return 0;
- }
- static void __exit
- aiptek_exit(void)
- {
- usb_deregister(&aiptek_driver);
- }
- module_init(aiptek_init);
- module_exit(aiptek_exit);