Re: [PATCH] Synaptics TouchPad driver for 2.5.70

[Peter Osterlund <petero2@telia.com>]

Vojtech Pavlik <vojtech@ucw.cz> writes:

> On Wed, Jun 11, 2003 at 08:16:13PM +0200, Peter Osterlund wrote:
> 
> > The w value is somewhat special and not really a real axis. According
> > to the Synaptics TouchPad Interfacing Guide
> > (http://www.synaptics.com/decaf/utilities/ACF126.pdf), W is defined as
> > follows:
> > 
> > Value		Needed capability	Interpretation
> > W = 0		capMultiFinger		Two fingers on the pad.
> > W = 1		capMultiFinger		Three or more fingers on the pad.
> > W = 2		capPen			Pen (instead of finger) on the pad.
> > W = 3		Reserved.
> > W = 4-7		capPalmDetect		Finger of normal width.
> > W = 8-14	capPalmDetect		Very wide finger or palm.
> > W = 15		capPalmDetect		Maximum reportable width; extremely
> > 					wide contact.
> > 
> > Is there a better way than using ABS_MISC to pass the W information to
> > user space?
> 
> We should probably add an EV_MSC, MSC_GESTURE event type for this.
> That'll be the cleanest solution.

Here is a new patch that sends ABS_ events to user space. I haven't
modified the XFree86 driver to handle this format yet, but I used
/dev/input/event* to verify that the driver generates correct data.


diff -u -r -N --exclude='.*' --exclude='*.o' --exclude='*~' ../../linus/main/linux/drivers/input/mouse/Kconfig linux/drivers/input/mouse/Kconfig
--- ../../linus/main/linux/drivers/input/mouse/Kconfig	Sat Jun  7 21:40:38 2003
+++ linux/drivers/input/mouse/Kconfig	Wed Jun 11 22:56:41 2003
@@ -28,6 +28,19 @@
 	  The module will be called psmouse. If you want to compile it as a
 	  module, say M here and read <file:Documentation/modules.txt>.
 
+config MOUSE_PS2_SYNAPTICS
+	bool "Synaptics TouchPad"
+	default n
+	depends on INPUT && INPUT_MOUSE && SERIO && MOUSE_PS2
+	---help---
+	  Say Y here if you have a Synaptics TouchPad connected to your system.
+	  This touchpad is found on many modern laptop computers.
+	  Note that you also need a user space driver to interpret the data
+	  generated by the kernel. A compatible driver for XFree86 is available
+	  from http://...
+
+	  If unsure, say Y.
+
 config MOUSE_SERIAL
 	tristate "Serial mouse"
 	depends on INPUT && INPUT_MOUSE && SERIO
diff -u -r -N --exclude='.*' --exclude='*.o' --exclude='*~' ../../linus/main/linux/drivers/input/mouse/psmouse.c linux/drivers/input/mouse/psmouse.c
--- ../../linus/main/linux/drivers/input/mouse/psmouse.c	Sat Jun  7 21:40:38 2003
+++ linux/drivers/input/mouse/psmouse.c	Wed Jun 11 23:05:25 2003
@@ -41,6 +41,7 @@
 #define PSMOUSE_RET_NAK		0xfe
 
 struct psmouse {
+	void *private;
 	struct input_dev dev;
 	struct serio *serio;
 	char *vendor;
@@ -65,8 +66,11 @@
 #define PSMOUSE_GENPS	4
 #define PSMOUSE_IMPS	5
 #define PSMOUSE_IMEX	6
+#define PSMOUSE_SYNAPTICS 7
 
-static char *psmouse_protocols[] = { "None", "PS/2", "PS2++", "PS2T++", "GenPS/2", "ImPS/2", "ImExPS/2" };
+#include "synaptics.c"
+
+static char *psmouse_protocols[] = { "None", "PS/2", "PS2++", "PS2T++", "GenPS/2", "ImPS/2", "ImExPS/2", "Synaptics"};
 
 /*
  * psmouse_process_packet() anlyzes the PS/2 mouse packet contents and
@@ -209,6 +213,16 @@
 		goto out;
 	}
 
+	if (psmouse->pktcnt == 1 && psmouse->type == PSMOUSE_SYNAPTICS) {
+		/*
+		 * The synaptics driver has its own resync logic,
+		 * so it needs to receive all bytes one at a time.
+		 */
+		synaptics_process_byte(psmouse, regs);
+		psmouse->pktcnt = 0;
+		goto out;
+	}
+
 	if (psmouse->pktcnt == 1 && psmouse->packet[0] == PSMOUSE_RET_BAT) {
 		serio_rescan(serio);
 		goto out;
@@ -343,12 +357,12 @@
        psmouse_command(psmouse, param, PSMOUSE_CMD_GETINFO);
 
        if (param[1] == 0x47) {
-               /* We could do more here. But it's sufficient just
-                  to stop the subsequent probes from screwing the
-                  thing up. */
-               psmouse->vendor = "Synaptics";
-               psmouse->name = "TouchPad";
-               return PSMOUSE_PS2;
+		int type = PSMOUSE_PS2;
+		psmouse->vendor = "Synaptics";
+		psmouse->name = "TouchPad";
+		if (synaptics_init(psmouse) == 0)
+			type = PSMOUSE_SYNAPTICS;
+		return type;
        }
 
 /*
@@ -598,6 +612,7 @@
 	struct psmouse *psmouse = serio->private;
 	input_unregister_device(&psmouse->dev);
 	serio_close(serio);
+	synaptics_disconnect(psmouse);
 	kfree(psmouse);
 }
 
diff -u -r -N --exclude='.*' --exclude='*.o' --exclude='*~' ../../linus/main/linux/drivers/input/mouse/synaptics.c linux/drivers/input/mouse/synaptics.c
--- ../../linus/main/linux/drivers/input/mouse/synaptics.c	Thu Jan  1 01:00:00 1970
+++ linux/drivers/input/mouse/synaptics.c	Wed Jun 11 23:04:59 2003
@@ -0,0 +1,400 @@
+/*
+ * Synaptics TouchPad PS/2 mouse driver
+ *
+ *   2003 Peter Osterlund <petero2@telia.com>
+ *     Ported to 2.5 input device infrastructure.
+ *
+ *   Copyright (C) 2001 Stefan Gmeiner <riddlebox@freesurf.ch>
+ *     start merging tpconfig and gpm code to a xfree-input module
+ *     adding some changes and extensions (ex. 3rd and 4th button)
+ *
+ *   Copyright (c) 1997 C. Scott Ananian <cananian@alumni.priceton.edu>
+ *   Copyright (c) 1998-2000 Bruce Kalk <kall@compass.com>
+ *     code for the special synaptics commands (from the tpconfig-source)
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * Trademarks are the property of their respective owners.
+ */
+
+#ifndef CONFIG_MOUSE_PS2_SYNAPTICS
+
+static inline void synaptics_process_byte(struct psmouse *psmouse, struct pt_regs *regs) {}
+static inline int synaptics_init(struct psmouse *psmouse) { return -1; }
+static inline void synaptics_disconnect(struct psmouse *psmouse) {}
+
+#else
+
+#include "synaptics.h"
+
+
+static int psmouse_command(struct psmouse *psmouse, unsigned char *param, int command);
+
+/*****************************************************************************
+ *	Synaptics communications functions
+ ****************************************************************************/
+
+/*
+ * Use the Synaptics extended ps/2 syntax to write a special command byte.
+ * special command: 0xE8 rr 0xE8 ss 0xE8 tt 0xE8 uu where (rr*64)+(ss*16)+(tt*4)+uu
+ *                  is the command. A 0xF3 or 0xE9 must follow (see synaptics_send_cmd
+ *                  and synaptics_set_mode)
+ */
+static int synaptics_special_cmd(struct psmouse *psmouse, unsigned char command)
+{
+	int i;
+
+	if (psmouse_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11))
+		return -1;
+
+	for (i = 6; i >= 0; i -= 2) {
+		unsigned char d = (command >> i) & 3;
+		if (psmouse_command(psmouse, &d, PSMOUSE_CMD_SETRES))
+			return -1;
+	}
+
+	return 0;
+}
+
+/*
+ * Send a command to the synpatics touchpad by special commands
+ */
+static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
+{
+	if (synaptics_special_cmd(psmouse, c))
+		return -1;
+	if (psmouse_command(psmouse, param, PSMOUSE_CMD_GETINFO))
+		return -1;
+	return 0;
+}
+
+/*
+ * Set the synaptics touchpad mode byte by special commands
+ */
+static int synaptics_set_mode(struct psmouse *psmouse, unsigned char mode)
+{
+	unsigned char param[1];
+
+	if (synaptics_special_cmd(psmouse, mode))
+		return -1;
+	param[0] = 0x14;
+	if (psmouse_command(psmouse, param, PSMOUSE_CMD_SETRATE))
+		return -1;
+	return 0;
+}
+
+static int synaptics_reset(struct psmouse *psmouse)
+{
+	unsigned char r[2];
+
+	if (psmouse_command(psmouse, r, PSMOUSE_CMD_RESET_BAT))
+		return -1;
+	if (r[0] == 0xAA && r[1] == 0x00)
+		return 0;
+	return -1;
+}
+
+/*
+ * Read the model-id bytes from the touchpad
+ * see also SYN_MODEL_* macros
+ */
+static int synaptics_model_id(struct psmouse *psmouse, unsigned long int *model_id)
+{
+	unsigned char mi[3];
+
+	if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi))
+		return -1;
+	*model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2];
+	return 0;
+}
+
+/*
+ * Read the capability-bits from the touchpad
+ * see also the SYN_CAP_* macros
+ */
+static int synaptics_capability(struct psmouse *psmouse, unsigned long int *capability)
+{
+	unsigned char cap[3];
+
+	if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
+		return -1;
+	*capability = (cap[0]<<16) | (cap[1]<<8) | cap[2];
+	if (SYN_CAP_VALID(*capability))
+		return 0;
+	return -1;
+}
+
+/*
+ * Identify Touchpad
+ * See also the SYN_ID_* macros
+ */
+static int synaptics_identify(struct psmouse *psmouse, unsigned long int *ident)
+{
+	unsigned char id[3];
+
+	if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
+		return -1;
+	*ident = (id[0]<<16) | (id[1]<<8) | id[2];
+	if (SYN_ID_IS_SYNAPTICS(*ident))
+		return 0;
+	return -1;
+}
+
+static int synaptics_enable_device(struct psmouse *psmouse)
+{
+	if (psmouse_command(psmouse, NULL, PSMOUSE_CMD_ENABLE))
+		return -1;
+	return 0;
+}
+
+static void print_ident(struct synaptics_data *priv)
+{
+	printk(KERN_INFO "Synaptics Touchpad, model: %ld\n", SYN_ID_MODEL(priv->identity));
+	printk(KERN_INFO " Firware: %ld.%ld\n", SYN_ID_MAJOR(priv->identity),
+	       SYN_ID_MINOR(priv->identity));
+
+	if (SYN_MODEL_ROT180(priv->model_id))
+		printk(KERN_INFO " 180 degree mounted touchpad\n");
+	if (SYN_MODEL_PORTRAIT(priv->model_id))
+		printk(KERN_INFO " portrait touchpad\n");
+	printk(KERN_INFO " Sensor: %ld\n", SYN_MODEL_SENSOR(priv->model_id));
+	if (SYN_MODEL_NEWABS(priv->model_id))
+		printk(KERN_INFO " new absolute packet format\n");
+	if (SYN_MODEL_PEN(priv->model_id))
+		printk(KERN_INFO " pen detection\n");
+
+	if (SYN_CAP_EXTENDED(priv->capabilities)) {
+		printk(KERN_INFO " Touchpad has extended capability bits\n");
+		if (SYN_CAP_FOUR_BUTTON(priv->capabilities))
+			printk(KERN_INFO " -> four buttons\n");
+		if (SYN_CAP_MULTIFINGER(priv->capabilities))
+			printk(KERN_INFO " -> multifinger detection\n");
+		if (SYN_CAP_PALMDETECT(priv->capabilities))
+			printk(KERN_INFO " -> palm detection\n");
+	}
+}
+
+static int query_hardware(struct psmouse *psmouse)
+{
+	struct synaptics_data *priv = psmouse->private;
+	int retries = 3;
+
+	while ((retries++ <= 3) && synaptics_reset(psmouse))
+		printk(KERN_ERR "synaptics reset failed\n");
+
+	if (synaptics_identify(psmouse, &priv->identity))
+		return -1;
+	if (synaptics_model_id(psmouse, &priv->model_id))
+		return -1;
+	if (synaptics_capability(psmouse, &priv->capabilities))
+		return -1;
+	if (synaptics_set_mode(psmouse, (SYN_BIT_ABSOLUTE_MODE |
+					 SYN_BIT_HIGH_RATE |
+					 SYN_BIT_DISABLE_GESTURE |
+					 SYN_BIT_W_MODE)))
+		return -1;
+
+	synaptics_enable_device(psmouse);
+
+	print_ident(priv);
+
+	return 0;
+}
+
+/*****************************************************************************
+ *	Driver initialization/cleanup functions
+ ****************************************************************************/
+
+static inline void set_abs_params(struct input_dev *dev, int axis, int min, int max, int fuzz, int flat)
+{
+	dev->absmin[axis] = min;
+	dev->absmax[axis] = max;
+	dev->absfuzz[axis] = fuzz;
+	dev->absflat[axis] = flat;
+
+	set_bit(axis, dev->absbit);
+}
+
+static int synaptics_init(struct psmouse *psmouse)
+{
+	struct synaptics_data *priv;
+
+	psmouse->private = priv = kmalloc(sizeof(struct synaptics_data), GFP_KERNEL);
+	if (!priv)
+		return -1;
+	memset(priv, 0, sizeof(struct synaptics_data));
+
+	priv->inSync = 1;
+
+	if (query_hardware(psmouse)) {
+		printk(KERN_ERR "Unable to query/initialize Synaptics hardware.\n");
+		goto init_fail;
+	}
+
+	/*
+	 * The x/y limits are taken from the Synaptics TouchPad interfacing Guide,
+	 * which says that they should be valid regardless of the actual size of
+	 * the senser.
+	 */
+	set_bit(EV_ABS, psmouse->dev.evbit);
+	set_abs_params(&psmouse->dev, ABS_X, 1472, 5472, 0, 0);
+	set_abs_params(&psmouse->dev, ABS_Y, 1408, 4448, 0, 0);
+	set_abs_params(&psmouse->dev, ABS_PRESSURE, 0, 255, 0, 0);
+
+	set_bit(EV_MSC, psmouse->dev.evbit);
+	set_bit(MSC_GESTURE, psmouse->dev.mscbit);
+
+	set_bit(EV_KEY, psmouse->dev.evbit);
+	set_bit(BTN_LEFT, psmouse->dev.keybit);
+	set_bit(BTN_RIGHT, psmouse->dev.keybit);
+	set_bit(BTN_FORWARD, psmouse->dev.keybit);
+	set_bit(BTN_BACK, psmouse->dev.keybit);
+
+	clear_bit(EV_REL, psmouse->dev.evbit);
+	clear_bit(REL_X, psmouse->dev.relbit);
+	clear_bit(REL_Y, psmouse->dev.relbit);
+
+	return 0;
+
+ init_fail:
+	kfree(priv);
+	return -1;
+}
+
+static void synaptics_disconnect(struct psmouse *psmouse)
+{
+	struct synaptics_data *priv = psmouse->private;
+
+	kfree(priv);
+}
+
+/*****************************************************************************
+ *	Functions to interpret the absolute mode packets
+ ****************************************************************************/
+
+static void synaptics_parse_hw_state(struct synaptics_data *priv,
+				     struct synaptics_hw_state *hw)
+{
+	unsigned char *buf = priv->proto_buf;
+
+	hw->x = (((buf[3] & 0x10) << 8) |
+		 ((buf[1] & 0x0f) << 8) |
+		 buf[4]);
+	hw->y = (((buf[3] & 0x20) << 7) |
+		 ((buf[1] & 0xf0) << 4) |
+		 buf[5]);
+
+	hw->z = buf[2];
+	hw->w = (((buf[0] & 0x30) >> 2) |
+		 ((buf[0] & 0x04) >> 1) |
+		 ((buf[3] & 0x04) >> 2));
+
+	hw->left  = (buf[0] & 0x01) ? 1 : 0;
+	hw->right = (buf[0] & 0x2) ? 1 : 0;
+	hw->up    = 0;
+	hw->down  = 0;
+
+	if (SYN_CAP_EXTENDED(priv->capabilities) &&
+	    (SYN_CAP_FOUR_BUTTON(priv->capabilities))) {
+		hw->up = ((buf[3] & 0x01)) ? 1 : 0;
+		if (hw->left)
+			hw->up = !hw->up;
+		hw->down = ((buf[3] & 0x02)) ? 1 : 0;
+		if (hw->right)
+			hw->down = !hw->down;
+	}
+}
+
+/*
+ *  called for each full received packet from the touchpad
+ */
+static void synaptics_process_packet(struct psmouse *psmouse)
+{
+	struct input_dev *dev = &psmouse->dev;
+	struct synaptics_data *priv = psmouse->private;
+	struct synaptics_hw_state hw;
+
+	synaptics_parse_hw_state(priv, &hw);
+
+	if (hw.z > 0) {
+		int w_ok = 0;
+		/*
+		 * Use capability bits to decide if the w value is valid.
+		 * If not, set it to 5, which corresponds to a finger of
+		 * normal width.
+		 */
+		if (SYN_CAP_EXTENDED(priv->capabilities)) {
+			switch (hw.w) {
+			case 0 ... 1:
+				w_ok = SYN_CAP_MULTIFINGER(priv->capabilities);
+				break;
+			case 2:
+				w_ok = SYN_MODEL_PEN(priv->model_id);
+				break;
+			case 4 ... 15:
+				w_ok = SYN_CAP_PALMDETECT(priv->capabilities);
+				break;
+			}
+		}
+		if (!w_ok)
+			hw.w = 5;
+	}
+
+	/* Post events */
+	input_report_abs(dev, ABS_X,        hw.x);
+	input_report_abs(dev, ABS_Y,        hw.y);
+	input_report_abs(dev, ABS_PRESSURE, hw.z);
+
+	if (hw.w != priv->old_w) {
+		input_event(dev, EV_MSC, MSC_GESTURE, hw.w);
+		priv->old_w = hw.w;
+	}
+
+	input_report_key(dev, BTN_LEFT,    hw.left);
+	input_report_key(dev, BTN_RIGHT,   hw.right);
+	input_report_key(dev, BTN_FORWARD, hw.up);
+	input_report_key(dev, BTN_BACK,    hw.down);
+
+	input_sync(dev);
+}
+
+static void synaptics_process_byte(struct psmouse *psmouse, struct pt_regs *regs)
+{
+	struct input_dev *dev = &psmouse->dev;
+	struct synaptics_data *priv = psmouse->private;
+	unsigned char *pBuf = priv->proto_buf;
+	unsigned char u = psmouse->packet[0];
+
+	input_regs(dev, regs);
+
+	pBuf[priv->proto_buf_tail++] = u;
+
+	/* check first byte */
+	if ((priv->proto_buf_tail == 1) && ((u & 0xC8) != 0x80)) {
+		priv->inSync = 0;
+		priv->proto_buf_tail = 0;
+		printk(KERN_WARNING "Synaptics driver lost sync at 1st byte\n");
+		return;
+	}
+
+	/* check 4th byte */
+	if ((priv->proto_buf_tail == 4) && ((u & 0xc8) != 0xc0)) {
+		priv->inSync = 0;
+		priv->proto_buf_tail = 0;
+		printk(KERN_WARNING "Synaptics driver lost sync at 4th byte\n");
+		return;
+	}
+
+	if (priv->proto_buf_tail >= 6) { /* Full packet received */
+		if (!priv->inSync) {
+			priv->inSync = 1;
+			printk(KERN_NOTICE "Synaptics driver resynced.\n");
+		}
+		synaptics_process_packet(psmouse);
+		priv->proto_buf_tail = 0;
+	}
+}
+
+#endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
diff -u -r -N --exclude='.*' --exclude='*.o' --exclude='*~' ../../linus/main/linux/drivers/input/mouse/synaptics.h linux/drivers/input/mouse/synaptics.h
--- ../../linus/main/linux/drivers/input/mouse/synaptics.h	Thu Jan  1 01:00:00 1970
+++ linux/drivers/input/mouse/synaptics.h	Wed Jun 11 23:04:50 2003
@@ -0,0 +1,90 @@
+/*
+ * Synaptics TouchPad PS/2 mouse driver
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+
+#ifndef _SYNAPTICS_H
+#define _SYNAPTICS_H
+
+/* synaptics queries */
+#define SYN_QUE_IDENTIFY		0x00
+#define SYN_QUE_MODES			0x01
+#define SYN_QUE_CAPABILITIES		0x02
+#define SYN_QUE_MODEL			0x03
+#define SYN_QUE_SERIAL_NUMBER_PREFIX	0x06
+#define SYN_QUE_SERIAL_NUMBER_SUFFIX	0x07
+#define SYN_QUE_RESOLUTION		0x08
+
+/* synatics modes */
+#define SYN_BIT_ABSOLUTE_MODE		(1 << 7)
+#define SYN_BIT_HIGH_RATE		(1 << 6)
+#define SYN_BIT_SLEEP_MODE		(1 << 3)
+#define SYN_BIT_DISABLE_GESTURE		(1 << 2)
+#define SYN_BIT_W_MODE			(1 << 0)
+
+/* synaptics model ID bits */
+#define SYN_MODEL_ROT180(m)		((m) & (1 << 23))
+#define SYN_MODEL_PORTRAIT(m)		((m) & (1 << 22))
+#define SYN_MODEL_SENSOR(m)		(((m) >> 16) & 0x3f)
+#define SYN_MODEL_HARDWARE(m)		(((m) >> 9) & 0x7f)
+#define SYN_MODEL_NEWABS(m)		((m) & (1 << 7))
+#define SYN_MODEL_PEN(m)		((m) & (1 << 6))
+#define SYN_MODEL_SIMPLIC(m)		((m) & (1 << 5))
+#define SYN_MODEL_GEOMETRY(m)		((m) & 0x0f)
+
+/* synaptics capability bits */
+#define SYN_CAP_EXTENDED(c)		((c) & (1 << 23))
+#define SYN_CAP_SLEEP(c)		((c) & (1 << 4))
+#define SYN_CAP_FOUR_BUTTON(c)		((c) & (1 << 3))
+#define SYN_CAP_MULTIFINGER(c)		((c) & (1 << 1))
+#define SYN_CAP_PALMDETECT(c)		((c) & (1 << 0))
+#define SYN_CAP_VALID(c)		((((c) & 0x00ff00) >> 8) == 0x47)
+
+/* synaptics modes query bits */
+#define SYN_MODE_ABSOLUTE(m)		((m) & (1 << 7))
+#define SYN_MODE_RATE(m)		((m) & (1 << 6))
+#define SYN_MODE_BAUD_SLEEP(m)		((m) & (1 << 3))
+#define SYN_MODE_DISABLE_GESTURE(m)	((m) & (1 << 2))
+#define SYN_MODE_PACKSIZE(m)		((m) & (1 << 1))
+#define SYN_MODE_WMODE(m)		((m) & (1 << 0))
+
+/* synaptics identify query bits */
+#define SYN_ID_MODEL(i) 		(((i) >> 4) & 0x0f)
+#define SYN_ID_MAJOR(i) 		((i) & 0x0f)
+#define SYN_ID_MINOR(i) 		(((i) >> 16) & 0xff)
+#define SYN_ID_IS_SYNAPTICS(i)		((((i) >> 8) & 0xff) == 0x47)
+
+
+/*
+ * A structure to describe the state of the touchpad hardware (buttons and pad)
+ */
+struct synaptics_hw_state {
+	int x;
+	int y;
+	int z;
+	int w;
+	int left;
+	int right;
+	int up;
+	int down;
+};
+
+struct synaptics_data {
+	/* Data read from the touchpad */
+	unsigned long int model_id;		/* Model-ID */
+	unsigned long int capabilities; 	/* Capabilities */
+	unsigned long int identity;		/* Identification */
+
+	/* Data for normal processing */
+	unsigned char proto_buf[6];		/* Buffer for Packet */
+	unsigned char last_byte;		/* last received byte */
+	int inSync;				/* Packets in sync */
+	int proto_buf_tail;
+
+	int old_w;				/* Previous w value */
+};
+
+#endif /* _SYNAPTICS_H */
diff -u -r -N --exclude='[ampvc]*' --exclude='*~' ../../linus/main/linux/include/linux/input.h linux/include/linux/input.h
--- ../../linus/main/linux/include/linux/input.h	Sat Jun  7 21:43:09 2003
+++ linux/include/linux/input.h	Wed Jun 11 21:56:04 2003
@@ -523,6 +523,7 @@
 
 #define MSC_SERIAL		0x00
 #define MSC_PULSELED		0x01
+#define MSC_GESTURE		0x02
 #define MSC_MAX			0x07
 
 /*


-- 
Peter Osterlund - petero2@telia.com
http://w1.894.telia.com/~u89404340