/*
* 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)
* (kernel 2.5.x variant, June-14-2002)
*/
/*
* 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 2.5.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;
usb_complete_t irq;
unsigned long evbit;
unsigned long absbit;
unsigned long relbit;
unsigned long btnbit;
unsigned long digibit;
};
struct aiptek {
struct input_dev dev;
struct usb_device *usbdev;
struct urb *irq;
struct aiptek_features *features;
int tool;
int open;
signed char *data;
dma_addr_t data_dma;
};
static void
aiptek_irq(struct urb *urb, struct pt_regs *regs)
{
struct aiptek *aiptek = urb->context;
unsigned char *data = aiptek->data;
struct input_dev *dev = &aiptek->dev;
int x;
int y;
int pressure;
int proximity;
int retval;
switch (urb->status) {
case 0:
/* success */
break;
case -ECONNRESET:
case -ENOENT:
case -ESHUTDOWN:
/* this urb is terminated, clean up */
dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
return;
default:
dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
goto exit;
}
if ((data[0] & 2) == 0) {
dbg("received unknown report #%d", data[0]);
}
input_regs(dev, regs);
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);
}
input_sync(dev);
exit:
retval = usb_submit_urb (urb, GFP_ATOMIC);
if (retval)
err ("%s - usb_submit_urb failed with result %d",
__FUNCTION__, retval);
}
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, GFP_KERNEL))
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);
}
#define USB_REQ_SET_REPORT 0x09
static int
usb_set_report(struct usb_device *dev, struct usb_host_interface *inter, unsigned char type,
unsigned char id, void *buf, int size)
{
return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
USB_REQ_SET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
(type << 8) + id, inter->desc.bInterfaceNumber, buf, size, HZ);
}
static void
aiptek_command(struct usb_device *dev, struct usb_host_interface *inter,
unsigned char command, unsigned char data)
{
__u8 buf[3];
buf[0] = 4;
buf[1] = command;
buf[2] = data;
if (usb_set_report(dev, inter, 3, 2, buf, 3) != 3) {
dbg("aiptek_command: 0x%x 0x%x\n", command, data);
}
}
static int
aiptek_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct usb_device *dev = interface_to_usbdev (intf);
struct usb_host_interface *interface = intf->altsetting + 0;
struct usb_endpoint_descriptor *endpoint;
struct aiptek *aiptek;
if (!(aiptek = kmalloc(sizeof (struct aiptek), GFP_KERNEL)))
return -ENOMEM;
memset(aiptek, 0, sizeof (struct aiptek));
aiptek->data = usb_buffer_alloc(dev, 10, SLAB_ATOMIC, &aiptek->data_dma);
if (!aiptek->data) {
kfree(aiptek);
return -ENOMEM;
}
aiptek->irq = usb_alloc_urb(0, GFP_KERNEL);
if (!aiptek->irq) {
usb_buffer_free(dev, 10, aiptek->data, aiptek->data_dma);
kfree(aiptek);
return -ENOMEM;
}
/* Resolution500LPI */
aiptek_command(dev, interface, 0x18, 0x04);
/* SwitchToTablet */
aiptek_command(dev, interface, 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.id.bustype = BUS_USB;
aiptek->dev.id.vendor = dev->descriptor.idVendor;
aiptek->dev.id.product = dev->descriptor.idProduct;
aiptek->dev.id.version = dev->descriptor.bcdDevice;
aiptek->usbdev = dev;
endpoint = &intf->altsetting[0].endpoint[0].desc;
if (aiptek->features->pktlen > 10)
BUG();
usb_fill_int_urb(aiptek->irq, dev,
usb_rcvintpipe(dev, endpoint->bEndpointAddress),
aiptek->data, aiptek->features->pktlen,
aiptek->features->irq, aiptek, endpoint->bInterval);
aiptek->irq->transfer_dma = aiptek->data_dma;
aiptek->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
input_register_device(&aiptek->dev);
printk(KERN_INFO "input: %s on usb%d:%d\n",
aiptek->features->name, dev->bus->busnum, dev->devnum);
usb_set_intfdata(intf, aiptek);
return 0;
}
static void
aiptek_disconnect(struct usb_interface *intf)
{
struct aiptek *aiptek = usb_get_intfdata (intf);
usb_set_intfdata(intf, NULL);
if (aiptek) {
usb_unlink_urb(aiptek->irq);
input_unregister_device(&aiptek->dev);
usb_free_urb(aiptek->irq);
usb_buffer_free(interface_to_usbdev(intf), 10, aiptek->data, aiptek->data_dma);
kfree(aiptek);
}
}
static struct usb_driver aiptek_driver = {
.owner = THIS_MODULE,
.name = "aiptek",
.probe = aiptek_probe,
.disconnect = aiptek_disconnect,
.id_table = aiptek_ids,
};
static int __init
aiptek_init(void)
{
int result = usb_register(&aiptek_driver);
if (result == 0) {
info(DRIVER_VERSION " " DRIVER_AUTHOR);
info(DRIVER_DESC);
}
return result;
}
static void __exit
aiptek_exit(void)
{
usb_deregister(&aiptek_driver);
}
module_init(aiptek_init);
module_exit(aiptek_exit);
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