patch-2.2.18 linux/drivers/usb/wacom.c

• Lines: 335
• Date: Wed Sep 27 12:08:21 2000
• Orig file: v2.2.17/drivers/usb/wacom.c
• Orig date: Thu Jan 1 01:00:00 1970

diff -u --new-file --recursive --exclude-from /usr/src/exclude v2.2.17/drivers/usb/wacom.c linux/drivers/usb/wacom.c
@@ -0,0 +1,334 @@
+/*
+ * $Id: wacom.c,v 1.9 2000/05/29 09:01:52 vojtech Exp $
+ *
+ *  Copyright (c) 2000 Vojtech Pavlik		<vojtech@suse.cz>
+ *  Copyright (c) 2000 Andreas Bach Aaen	<abach@stofanet.dk>
+ *  Copyright (c) 2000 Clifford Wolf		<clifford@clifford.at>
+ *  Copyright (c) 2000 Sam Mosel		<sam.mosel@computer.org>
+ *
+ *  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
+ */
+
+/*
+ * 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 <linux/init.h>
+#include <linux/usb.h>
+
+MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
+MODULE_DESCRIPTION("USB Wacom Graphire and Wacom Intuos tablet driver");
+
+/*
+ * Wacom Graphire packet:
+ *
+ * byte 0: report ID (2)
+ * byte 1: bit7		pointer in range
+ *	   bit5-6	pointer type 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 / touch
+ * 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).
+ *
+ * Wacom Intuos status packet:
+ *
+ * byte 0: report ID (2)
+ * byte 1: bit7		1 - sync bit 
+ *	   bit6		pointer in range
+ *	   bit5		pointer type report
+ *	   bit4		0 ?
+ *	   bit3		0 ?
+ *	   bit2		pen button2
+ *	   bit1		pen button1
+ *	   bit0		0 ?
+ * byte 2: X high bits
+ * byte 3: X low bits
+ * byte 4: Y high bits
+ * byte 5: Y low bits
+ * byte 6: bits 0-7: pressure	(bits 2-9)
+ * byte 7: bits 6-7: pressure	(bits 0-1)
+ * byte 7: bits 0-5: X tilt	(bits 1-6)
+ * byte 8: bit    7: X tilt	(bit  0)
+ * byte 8: bits 0-6: Y tilt	(bits 0-6)
+ * byte 9: bits 4-7: distance
+ */
+
+#define USB_VENDOR_ID_WACOM	0x056a
+
+struct wacom_features {
+	char *name;
+	int idProduct;
+	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 urb irq;
+	struct wacom_features *features;
+	int tool;
+	int open;
+};
+
+static void wacom_graphire_irq(struct urb *urb)
+{
+	struct wacom *wacom = urb->context;
+	unsigned char *data = wacom->data;
+	struct input_dev *dev = &wacom->dev;
+
+	if (urb->status) return;
+
+	if (data[0] != 2)
+		dbg("received unknown report #%d", data[0]);
+
+	if ( data[1] & 0x80 ) {
+		input_report_abs(dev, ABS_X, data[2] | ((__u32)data[3] << 8));
+		input_report_abs(dev, ABS_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]);
+			return;
+	}
+
+	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);
+}
+
+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;
+
+	if (urb->status) return;
+
+	if (data[0] != 2)
+		dbg("received unknown report #%d", data[0]);
+
+	if (((data[1] >> 5) & 0x3) == 0x2) {				/* Enter report */
+
+		switch (((__u32)data[2] << 4) | (data[3] >> 4)) {
+			case 0x012: wacom->tool = BTN_TOOL_PENCIL;	break;	/* Inking pen */
+			case 0x822:
+			case 0x022: wacom->tool = BTN_TOOL_PEN;		break;	/* Pen */
+			case 0x032: wacom->tool = BTN_TOOL_BRUSH;	break;	/* Stroke pen */
+			case 0x094: wacom->tool = BTN_TOOL_MOUSE;	break;	/* Mouse 4D */
+			case 0x096: wacom->tool = BTN_TOOL_LENS;	break;	/* Lens cursor */
+			case 0x82a:
+			case 0x0fa: wacom->tool = BTN_TOOL_RUBBER;	break;	/* Eraser */
+			case 0x112: wacom->tool = BTN_TOOL_AIRBRUSH;	break;	/* Airbrush */
+			default:    wacom->tool = BTN_TOOL_PEN;		break;	/* Unknown tool */
+		}			
+		input_report_key(dev, wacom->tool, 1);
+		return;
+	}
+
+	if ((data[1] | data[2] | data[3] | data[4] | data[5] |
+	     data[6] | data[7] | data[8] | data[9]) == 0x80) {		/* Exit report */
+		input_report_key(dev, wacom->tool, 0);
+		return;
+	}
+
+	input_report_abs(dev, ABS_X, ((__u32)data[2] << 8) | data[3]);
+	input_report_abs(dev, ABS_Y, ((__u32)data[4] << 8) | data[5]);
+	input_report_abs(dev, ABS_PRESSURE, t = ((__u32)data[6] << 2) | ((data[7] >> 6) & 3));
+	input_report_abs(dev, ABS_DISTANCE, data[9] >> 4);
+	input_report_abs(dev, ABS_TILT_X, ((data[7] << 1) & 0x7e) | (data[8] >> 7));
+	input_report_abs(dev, ABS_TILT_Y, data[8] & 0x7f);
+
+	input_report_key(dev, BTN_STYLUS, data[1] & 2);
+	input_report_key(dev, BTN_STYLUS2, data[1] & 4);
+	input_report_key(dev, BTN_TOUCH, t > 10);
+}
+
+#define WACOM_INTUOS_TOOLS	(BIT(BTN_TOOL_BRUSH) | BIT(BTN_TOOL_PENCIL) | BIT(BTN_TOOL_AIRBRUSH) | BIT(BTN_TOOL_LENS))
+
+struct wacom_features wacom_features[] = {
+	{ "Wacom Graphire",     0x10,  8, 10206,  7422,  511, 32, wacom_graphire_irq,
+		BIT(EV_REL), 0, BIT(REL_WHEEL), BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE), 0 },
+	{ "Wacom Intuos 4x5",   0x20, 10, 12700, 10360, 1023, 15, wacom_intuos_irq,
+		0, BIT(ABS_TILT_X) | BIT(ABS_TILT_Y), 0, 0, WACOM_INTUOS_TOOLS },
+	{ "Wacom Intuos 6x8",   0x21, 10, 20320, 15040, 1023, 15, wacom_intuos_irq,
+		0, BIT(ABS_TILT_X) | BIT(ABS_TILT_Y), 0, 0, WACOM_INTUOS_TOOLS },
+	{ "Wacom Intuos 9x12",  0x22, 10, 30480, 23060, 1023, 15, wacom_intuos_irq,
+		0, BIT(ABS_TILT_X) | BIT(ABS_TILT_Y), 0, 0, WACOM_INTUOS_TOOLS },
+	{ "Wacom Intuos 12x12", 0x23, 10, 30480, 30480, 1023, 15, wacom_intuos_irq,
+		0, BIT(ABS_TILT_X) | BIT(ABS_TILT_Y), 0, 0, WACOM_INTUOS_TOOLS },
+	{ "Wacom Intuos 12x18", 0x24, 10, 47720, 30480, 1023, 15, wacom_intuos_irq,
+		0, BIT(ABS_TILT_X) | BIT(ABS_TILT_Y), 0, 0, WACOM_INTUOS_TOOLS },
+	{ NULL , 0 }
+};
+
+static int wacom_open(struct input_dev *dev)
+{
+	struct wacom *wacom = dev->private;
+
+	if (wacom->open++)
+		return 0;
+
+	if (usb_submit_urb(&wacom->irq))
+		return -EIO;
+
+	return 0;
+}
+
+static void wacom_close(struct input_dev *dev)
+{
+	struct wacom *wacom = dev->private;
+
+	if (!--wacom->open)
+		usb_unlink_urb(&wacom->irq);
+}
+
+static void *wacom_probe(struct usb_device *dev, unsigned int ifnum)
+{
+	struct usb_endpoint_descriptor *endpoint;
+	struct wacom *wacom;
+	int i;
+
+	if (dev->descriptor.idVendor != USB_VENDOR_ID_WACOM) return NULL;
+	for (i = 0; wacom_features[i].idProduct && wacom_features[i].idProduct != dev->descriptor.idProduct; i++);
+	if (!wacom_features[i].idProduct) return NULL;
+
+	endpoint = dev->config[0].interface[ifnum].altsetting[0].endpoint + 0;
+
+	if (!(wacom = kmalloc(sizeof(struct wacom), GFP_KERNEL))) return NULL;
+	memset(wacom, 0, sizeof(struct wacom));
+
+	wacom->features = wacom_features + i;
+
+	wacom->dev.evbit[0] |= BIT(EV_KEY) | BIT(EV_ABS) | wacom->features->evbit;
+	wacom->dev.absbit[0] |= BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE) | BIT(ABS_DISTANCE) | wacom->features->absbit;
+	wacom->dev.relbit[0] |= wacom->features->relbit;
+	wacom->dev.keybit[LONG(BTN_LEFT)] |= wacom->features->btnbit;
+	wacom->dev.keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_PEN) | BIT(BTN_TOOL_RUBBER) | BIT(BTN_TOOL_MOUSE) |
+		BIT(BTN_TOUCH) | BIT(BTN_STYLUS) | BIT(BTN_STYLUS2) | wacom->features->digibit;
+
+	wacom->dev.absmax[ABS_X] = wacom->features->x_max;
+	wacom->dev.absmax[ABS_Y] = wacom->features->y_max;
+	wacom->dev.absmax[ABS_PRESSURE] = wacom->features->pressure_max;
+	wacom->dev.absmax[ABS_DISTANCE] = wacom->features->distance_max;
+	wacom->dev.absmax[ABS_TILT_X] = 127;
+	wacom->dev.absmax[ABS_TILT_Y] = 127;
+
+	wacom->dev.private = wacom;
+	wacom->dev.open = wacom_open;
+	wacom->dev.close = wacom_close;
+
+	wacom->dev.name = wacom->features->name;
+	wacom->dev.idbus = BUS_USB;
+	wacom->dev.idvendor = dev->descriptor.idVendor;
+	wacom->dev.idproduct = dev->descriptor.idProduct;
+	wacom->dev.idversion = dev->descriptor.bcdDevice;
+
+	FILL_INT_URB(&wacom->irq, dev, usb_rcvintpipe(dev, endpoint->bEndpointAddress),
+		     wacom->data, wacom->features->pktlen, wacom->features->irq, wacom, endpoint->bInterval);
+
+	input_register_device(&wacom->dev);
+
+	printk(KERN_INFO "input%d: %s on usb%d:%d.%d\n",
+		 wacom->dev.number, wacom->features->name, dev->bus->busnum, dev->devnum, ifnum);
+
+	return wacom;
+}
+
+static void wacom_disconnect(struct usb_device *dev, void *ptr)
+{
+	struct wacom *wacom = ptr;
+	usb_unlink_urb(&wacom->irq);
+	input_unregister_device(&wacom->dev);
+	kfree(wacom);
+}
+
+static struct usb_driver wacom_driver = {
+	name:		"wacom",
+	probe:		wacom_probe,
+	disconnect:	wacom_disconnect,
+};
+
+static int __init wacom_init(void)
+{
+	usb_register(&wacom_driver);
+	return 0;
+}
+
+static void __exit wacom_exit(void)
+{
+	usb_deregister(&wacom_driver);
+}
+
+module_init(wacom_init);
+module_exit(wacom_exit);