wacom.c

S3C2440ARM9开发板的USB驱动程序

/*
 * $Id: wacom.c,v 1.1.1.1 2004/03/25 05:51:21 laputa Exp $
 *
 *  Copyright (c) 2000-2001 Vojtech Pavlik	<[e-mail]>
 *  Copyright (c) 2000 Andreas Bach Aaen	<[e-mail]>
 *  Copyright (c) 2000 Clifford Wolf		<[e-mail]>
 *  Copyright (c) 2000 Sam Mosel		<[e-mail]>
 *  Copyright (c) 2000 James E. Blair		<[e-mail]>
 *  Copyright (c) 2000 Daniel Egger		<[e-mail]>
 *  Copyright (c) 2001 Frederic Lepied		<[e-mail]>
 *
 *  USB Wacom Graphire and Wacom Intuos tablet support
 *
 *  Sponsored by SuSE
 *
 *  ChangeLog:
 *      v0.1 (vp)  - Initial release
 *      v0.2 (aba) - Support for all buttons / combinations
 *      v0.3 (vp)  - Support for Intuos added
 *	v0.4 (sm)  - Support for more Intuos models, menustrip
 *			relative mode, proximity.
 *	v0.5 (vp)  - Big cleanup, nifty features removed,
 * 			they belong in userspace
 *	v1.8 (vp)  - Submit URB only when operating, moved to CVS,
 *			use input_report_key instead of report_btn and
 *			other cleanups
 *	v1.11 (vp) - Add URB ->dev setting for new kernels
 *	v1.11 (jb) - Add support for the 4D Mouse & Lens
 *	v1.12 (de) - Add support for two more inking pen IDs
 *	v1.14 (vp) - Use new USB device id probing scheme.
 *		     Fix Wacom Graphire mouse wheel
 *	v1.18 (vp) - Fix mouse wheel direction
 *		     Make mouse relative
 *      v1.20 (fl) - Report tool id for Intuos devices
 *                 - Multi tools support
 *                 - Corrected Intuos protocol decoding (airbrush, 4D mouse, lens cursor...)
 *                 - Add PL models support
 *		   - Fix Wacom Graphire mouse wheel again
 *	v1.21 (vp) - Removed protocol descriptions
 *		   - Added MISC_SERIAL for tool serial numbers
 *	      (gb) - Identify version on module load.
 *    v1.21.1 (fl) - added Graphire2 support
 *    v1.21.2 (fl) - added Intuos2 support
 *                 - added all the PL ids
 *    v1.21.3 (fl) - added another eraser id from Neil Okamoto
 *                 - added smooth filter for Graphire from Peri Hankey
 *                 - added PenPartner support from Olaf van Es
 *                 - new tool ids from Ole Martin Bjoerndalen
 */

/*
 * 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 <[e-mail]>, or by paper mail:
 * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
 */

#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 "v1.21.3"
#define DRIVER_AUTHOR "Vojtech Pavlik <[e-mail]>"
#define DRIVER_DESC "USB Wacom Graphire and Wacom Intuos tablet driver"

MODULE_AUTHOR( DRIVER_AUTHOR );
MODULE_DESCRIPTION( DRIVER_DESC );
MODULE_LICENSE("GPL");

#define USB_VENDOR_ID_WACOM	0x056a

struct wacom_features {
	char *name;
	int pktlen;
	int x_max;
	int y_max;
	int pressure_max;
	int distance_max;
	void (*irq)(struct urb *urb);
	unsigned long evbit;
	unsigned long absbit;
	unsigned long relbit;
	unsigned long btnbit;
	unsigned long digibit;
};

struct wacom {
	signed char data[10];
	struct input_dev dev;
	struct usb_device *usbdev;
	struct urb irq;
	struct wacom_features *features;
	int tool[2];
	int open;
	__u32 serial[2];
};

static void wacom_pl_irq(struct urb *urb)
{
	struct wacom *wacom = urb->context;
	unsigned char *data = wacom->data;
	struct input_dev *dev = &wacom->dev;
	int prox;

	if (urb->status) return;

	if (data[0] != 2) {
		printk(KERN_ERR "wacom_pl_irq: received unknown report #%d\n", data[0]);
		return;
	}
	
	prox = data[1] & 0x20;
	
	input_report_key(dev, BTN_TOOL_PEN, prox);
	
	if (prox) {
		int pressure = (data[4] & 0x04) >> 2 | ((__u32)(data[7] & 0x7f) << 1);

		input_report_abs(dev, ABS_X, data[3] | ((__u32)data[2] << 8) | ((__u32)(data[1] & 0x03) << 16));
		input_report_abs(dev, ABS_Y, data[6] | ((__u32)data[5] << 8) | ((__u32)(data[4] & 0x03) << 8));
		input_report_abs(dev, ABS_PRESSURE, (data[7] & 0x80) ? (255 - pressure) : (pressure + 255));
		input_report_key(dev, BTN_TOUCH, data[4] & 0x08);
		input_report_key(dev, BTN_STYLUS, data[4] & 0x10);
		input_report_key(dev, BTN_STYLUS2, data[4] & 0x20);
	}
	
	input_event(dev, EV_MSC, MSC_SERIAL, 0);
}

static void wacom_penpartner_irq(struct urb *urb)
{
	struct wacom *wacom = urb->context;
	unsigned char *data = wacom->data;
	struct input_dev *dev = &wacom->dev;
	int x, y; 
	char pressure; 
	int leftmb;

	if (urb->status) return;

	x = data[2] << 8 | data[1];
	y = data[4] << 8 | data[3];
	pressure = data[6];
	leftmb = ((pressure > -80) && !(data[5] &20));

	input_report_key(dev, BTN_TOOL_PEN, 1);

	input_report_abs(dev, ABS_X, x);
	input_report_abs(dev, ABS_Y, y);
	input_report_abs(dev, ABS_PRESSURE, pressure+127);
	input_report_key(dev, BTN_LEFT, leftmb);
	input_report_key(dev, BTN_RIGHT, (data[5] & 0x40));
	
	input_event(dev, EV_MSC, MSC_SERIAL, leftmb);
}

static void wacom_graphire_irq(struct urb *urb)
{
	struct wacom *wacom = urb->context;
	unsigned char *data = wacom->data;
	struct input_dev *dev = &wacom->dev;
	int x, y;

	if (urb->status) return;

	if (data[0] != 2) {
		printk(KERN_ERR "wacom_graphire_irq: received unknown report #%d\n", data[0]);
		return;
	}
	
	x = data[2] | ((__u32)data[3] << 8);
	y = data[4] | ((__u32)data[5] << 8);

	switch ((data[1] >> 5) & 3) {

		case 0:	/* Pen */
			input_report_key(dev, BTN_TOOL_PEN, data[1] & 0x80);
			break;

		case 1: /* Rubber */
			input_report_key(dev, BTN_TOOL_RUBBER, data[1] & 0x80);
			break;

		case 2: /* Mouse */
			input_report_key(dev, BTN_TOOL_MOUSE, data[7] > 24);
			input_report_key(dev, BTN_LEFT, data[1] & 0x01);
			input_report_key(dev, BTN_RIGHT, data[1] & 0x02);
			input_report_key(dev, BTN_MIDDLE, data[1] & 0x04);
			input_report_abs(dev, ABS_DISTANCE, data[7]);
			input_report_rel(dev, REL_WHEEL, (signed char) data[6]);

			input_report_abs(dev, ABS_X, x);
			input_report_abs(dev, ABS_Y, y);

			input_event(dev, EV_MSC, MSC_SERIAL, data[1] & 0x01);
			return;
	}

	if (data[1] & 0x80) {
		input_report_abs(dev, ABS_X, x);
		input_report_abs(dev, ABS_Y, y);
	}

	input_report_abs(dev, ABS_PRESSURE, data[6] | ((__u32)data[7] << 8));
	input_report_key(dev, BTN_TOUCH, data[1] & 0x01);
	input_report_key(dev, BTN_STYLUS, data[1] & 0x02);
	input_report_key(dev, BTN_STYLUS2, data[1] & 0x04);

	input_event(dev, EV_MSC, MSC_SERIAL, data[1] & 0x01);
}

static void wacom_intuos_irq(struct urb *urb)
{
	struct wacom *wacom = urb->context;
	unsigned char *data = wacom->data;
	struct input_dev *dev = &wacom->dev;
	unsigned int t;
	int idx;

	if (urb->status) return;

	if (data[0] != 2) {
		printk(KERN_ERR "wacom_intuos_irq: received unknown report #%d\n", data[0]);
		return;
	}
	
	/* tool number */
	idx = data[1] & 0x01;

	if ((data[1] & 0xfc) == 0xc0) {						/* Enter report */

		wacom->serial[idx] = ((__u32)(data[3] & 0x0f) << 4) +		/* serial number of the tool */
			((__u32)data[4] << 16) + ((__u32)data[5] << 12) +
			((__u32)data[6] << 4) + (data[7] >> 4);

		switch (((__u32)data[2] << 4) | (data[3] >> 4)) {
			case 0x832:
			case 0x012: wacom->tool[idx] = BTN_TOOL_PENCIL;		break;	/* Inking pen */
			case 0x822:
		        case 0x852:
			case 0x022: wacom->tool[idx] = BTN_TOOL_PEN;		break;	/* Pen */
			case 0x812:
			case 0x032: wacom->tool[idx] = BTN_TOOL_BRUSH;		break;	/* Stroke pen */
		        case 0x09c:
		        case 0x007:
			case 0x094: wacom->tool[idx] = BTN_TOOL_MOUSE;		break;	/* Mouse 4D */