[net-next-2.6.git] / drivers / input / mouse / synaptics.c

/*
 * Synaptics TouchPad PS/2 mouse driver
 *
 *   2003 Dmitry Torokhov <dtor@mail.ru>
 *     Added support for pass-through port. Special thanks to Peter Berg Larsen
 *     for explaining various Synaptics quirks.
 *
 *   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.
 */

#include <linux/module.h>
#include <linux/input.h>
#include <linux/serio.h>
#include <linux/libps2.h>
#include "psmouse.h"
#include "synaptics.h"

/*
 * The x/y limits are taken from the Synaptics TouchPad interfacing Guide,
 * section 2.3.2, which says that they should be valid regardless of the
 * actual size of the sensor.
 */
#define XMIN_NOMINAL 1472
#define XMAX_NOMINAL 5472
#define YMIN_NOMINAL 1408
#define YMAX_NOMINAL 4448

/*****************************************************************************
 *	Synaptics communications functions
 ****************************************************************************/

/*
 * 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 (psmouse_sliced_command(psmouse, c))
		return -1;
	if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
		return -1;
	return 0;
}

/*
 * Set the synaptics touchpad mode byte by special commands
 */
static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode)
{
	unsigned char param[1];

	if (psmouse_sliced_command(psmouse, mode))
		return -1;
	param[0] = SYN_PS_SET_MODE2;
	if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE))
		return -1;
	return 0;
}

/*
 * Read the model-id bytes from the touchpad
 * see also SYN_MODEL_* macros
 */
static int synaptics_model_id(struct psmouse *psmouse)
{
	struct synaptics_data *priv = psmouse->private;
	unsigned char mi[3];

	if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi))
		return -1;
	priv->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)
{
	struct synaptics_data *priv = psmouse->private;
	unsigned char cap[3];

	if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
		return -1;
	priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2];
	priv->ext_cap = 0;
	if (!SYN_CAP_VALID(priv->capabilities))
		return -1;

	/*
	 * Unless capExtended is set the rest of the flags should be ignored
	 */
	if (!SYN_CAP_EXTENDED(priv->capabilities))
		priv->capabilities = 0;

	if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
		if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
			printk(KERN_ERR "Synaptics claims to have extended capabilities,"
			       " but I'm not able to read them.");
		} else {
			priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2];

			/*
			 * if nExtBtn is greater than 8 it should be considered
			 * invalid and treated as 0
			 */
			if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8)
				priv->ext_cap &= 0xff0fff;
		}
	}
	return 0;
}

/*
 * Identify Touchpad
 * See also the SYN_ID_* macros
 */
static int synaptics_identify(struct psmouse *psmouse)
{
	struct synaptics_data *priv = psmouse->private;
	unsigned char id[3];

	if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
		return -1;
	priv->identity = (id[0]<<16) | (id[1]<<8) | id[2];
	if (SYN_ID_IS_SYNAPTICS(priv->identity))
		return 0;
	return -1;
}

static int synaptics_query_hardware(struct psmouse *psmouse)
{
	int retries = 0;

	while ((retries++ < 3) && psmouse_reset(psmouse))
		printk(KERN_ERR "synaptics reset failed\n");

	if (synaptics_identify(psmouse))
		return -1;
	if (synaptics_model_id(psmouse))
		return -1;
	if (synaptics_capability(psmouse))
		return -1;

	return 0;
}

static int synaptics_set_absolute_mode(struct psmouse *psmouse)
{
	struct synaptics_data *priv = psmouse->private;

	priv->mode = SYN_BIT_ABSOLUTE_MODE;
	if (SYN_ID_MAJOR(priv->identity) >= 4)
		priv->mode |= SYN_BIT_DISABLE_GESTURE;
	if (SYN_CAP_EXTENDED(priv->capabilities))
		priv->mode |= SYN_BIT_W_MODE;

	if (synaptics_mode_cmd(psmouse, priv->mode))
		return -1;

	return 0;
}

static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
{
	struct synaptics_data *priv = psmouse->private;

	if (rate >= 80) {
		priv->mode |= SYN_BIT_HIGH_RATE;
		psmouse->rate = 80;
	} else {
		priv->mode &= ~SYN_BIT_HIGH_RATE;
		psmouse->rate = 40;
	}

	synaptics_mode_cmd(psmouse, priv->mode);
}

/*****************************************************************************
 *	Synaptics pass-through PS/2 port support
 ****************************************************************************/
static int synaptics_pt_write(struct serio *serio, unsigned char c)
{
	struct psmouse *parent = serio_get_drvdata(serio->parent);
	char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */

	if (psmouse_sliced_command(parent, c))
		return -1;
	if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
		return -1;
	return 0;
}

static inline int synaptics_is_pt_packet(unsigned char *buf)
{
	return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
}

static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
{
	struct psmouse *child = serio_get_drvdata(ptport);

	if (child && child->state == PSMOUSE_ACTIVATED) {
		serio_interrupt(ptport, packet[1], 0);
		serio_interrupt(ptport, packet[4], 0);
		serio_interrupt(ptport, packet[5], 0);
		if (child->pktsize == 4)
			serio_interrupt(ptport, packet[2], 0);
	} else
		serio_interrupt(ptport, packet[1], 0);
}

static void synaptics_pt_activate(struct psmouse *psmouse)
{
	struct serio *ptport = psmouse->ps2dev.serio->child;
	struct psmouse *child = serio_get_drvdata(ptport);
	struct synaptics_data *priv = psmouse->private;

	/* adjust the touchpad to child's choice of protocol */
	if (child) {
		if (child->pktsize == 4)
			priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
		else
			priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;

		if (synaptics_mode_cmd(psmouse, priv->mode))
			printk(KERN_INFO "synaptics: failed to switch guest protocol\n");
	}
}

static void synaptics_pt_create(struct psmouse *psmouse)
{
	struct serio *serio;

	serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
	if (!serio) {
		printk(KERN_ERR "synaptics: not enough memory to allocate pass-through port\n");
		return;
	}

	serio->id.type = SERIO_PS_PSTHRU;
	strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
	strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
	serio->write = synaptics_pt_write;
	serio->parent = psmouse->ps2dev.serio;

	psmouse->pt_activate = synaptics_pt_activate;

	printk(KERN_INFO "serio: %s port at %s\n", serio->name, psmouse->phys);
	serio_register_port(serio);
}

/*****************************************************************************
 *	Functions to interpret the absolute mode packets
 ****************************************************************************/

static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw)
{
	memset(hw, 0, sizeof(struct synaptics_hw_state));

	if (SYN_MODEL_NEWABS(priv->model_id)) {
		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] & 0x02) ? 1 : 0;

		if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
			hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
			if (hw->w == 2)
				hw->scroll = (signed char)(buf[1]);
		}

		if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
			hw->up   = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
			hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
		}

		if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
		    ((buf[0] ^ buf[3]) & 0x02)) {
			switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
			default:
				/*
				 * if nExtBtn is greater than 8 it should be
				 * considered invalid and treated as 0
				 */
				break;
			case 8:
				hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
				hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
			case 6:
				hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
				hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
			case 4:
				hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
				hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
			case 2:
				hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
				hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
			}
		}
	} else {
		hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
		hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);

		hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
		hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));

		hw->left  = (buf[0] & 0x01) ? 1 : 0;
		hw->right = (buf[0] & 0x02) ? 1 : 0;
	}
}

/*
 *  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;
	int num_fingers;
	int finger_width;
	int i;

	synaptics_parse_hw_state(psmouse->packet, priv, &hw);

	if (hw.scroll) {
		priv->scroll += hw.scroll;

		while (priv->scroll >= 4) {
			input_report_key(dev, BTN_BACK, !hw.down);
			input_sync(dev);
			input_report_key(dev, BTN_BACK, hw.down);
			input_sync(dev);
			priv->scroll -= 4;
		}
		while (priv->scroll <= -4) {
			input_report_key(dev, BTN_FORWARD, !hw.up);
			input_sync(dev);
			input_report_key(dev, BTN_FORWARD, hw.up);
			input_sync(dev);
			priv->scroll += 4;
		}
		return;
	}

	if (hw.z > 0) {
		num_fingers = 1;
		finger_width = 5;
		if (SYN_CAP_EXTENDED(priv->capabilities)) {
			switch (hw.w) {
			case 0 ... 1:
				if (SYN_CAP_MULTIFINGER(priv->capabilities))
					num_fingers = hw.w + 2;
				break;
			case 2:
				if (SYN_MODEL_PEN(priv->model_id))
					;   /* Nothing, treat a pen as a single finger */
				break;
			case 4 ... 15:
				if (SYN_CAP_PALMDETECT(priv->capabilities))
					finger_width = hw.w;
				break;
			}
		}
	} else {
		num_fingers = 0;
		finger_width = 0;
	}

	/* Post events
	 * BTN_TOUCH has to be first as mousedev relies on it when doing
	 * absolute -> relative conversion
	 */
	if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
	if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);

	if (hw.z > 0) {
		input_report_abs(dev, ABS_X, hw.x);
		input_report_abs(dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - hw.y);
	}
	input_report_abs(dev, ABS_PRESSURE, hw.z);

	input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
	input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
	input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
	input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);

	input_report_key(dev, BTN_LEFT, hw.left);
	input_report_key(dev, BTN_RIGHT, hw.right);

	if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
		input_report_key(dev, BTN_MIDDLE, hw.middle);

	if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
		input_report_key(dev, BTN_FORWARD, hw.up);
		input_report_key(dev, BTN_BACK, hw.down);
	}

	for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
		input_report_key(dev, BTN_0 + i, hw.ext_buttons & (1 << i));

	input_sync(dev);
}

static int synaptics_validate_byte(unsigned char packet[], int idx, unsigned char pkt_type)
{
	static const unsigned char newabs_mask[]	= { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
	static const unsigned char newabs_rel_mask[]	= { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
	static const unsigned char newabs_rslt[]	= { 0x80, 0x00, 0x00, 0xC0, 0x00 };
	static const unsigned char oldabs_mask[]	= { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
	static const unsigned char oldabs_rslt[]	= { 0xC0, 0x00, 0x00, 0x80, 0x00 };

	if (idx < 0 || idx > 4)
		return 0;

	switch (pkt_type) {
		case SYN_NEWABS:
		case SYN_NEWABS_RELAXED:
			return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];

		case SYN_NEWABS_STRICT:
			return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];

		case SYN_OLDABS:
			return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];

		default:
			printk(KERN_ERR "synaptics: unknown packet type %d\n", pkt_type);
			return 0;
	}
}

static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
{
	int i;

	for (i = 0; i < 5; i++)
		if (!synaptics_validate_byte(psmouse->packet, i, SYN_NEWABS_STRICT)) {
			printk(KERN_INFO "synaptics: using relaxed packet validation\n");
			return SYN_NEWABS_RELAXED;
		}

	return SYN_NEWABS_STRICT;
}

static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
{
	struct synaptics_data *priv = psmouse->private;

	if (psmouse->pktcnt >= 6) { /* Full packet received */
		if (unlikely(priv->pkt_type == SYN_NEWABS))
			priv->pkt_type = synaptics_detect_pkt_type(psmouse);

		if (SYN_CAP_PASS_THROUGH(priv->capabilities) && synaptics_is_pt_packet(psmouse->packet)) {
			if (psmouse->ps2dev.serio->child)
				synaptics_pass_pt_packet(psmouse->ps2dev.serio->child, psmouse->packet);
		} else
			synaptics_process_packet(psmouse);

		return PSMOUSE_FULL_PACKET;
	}

	return synaptics_validate_byte(psmouse->packet, psmouse->pktcnt - 1, priv->pkt_type) ?
		PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
}

/*****************************************************************************
 *	Driver initialization/cleanup functions
 ****************************************************************************/
static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
{
	int i;

	set_bit(EV_ABS, dev->evbit);
	input_set_abs_params(dev, ABS_X, XMIN_NOMINAL, XMAX_NOMINAL, 0, 0);
	input_set_abs_params(dev, ABS_Y, YMIN_NOMINAL, YMAX_NOMINAL, 0, 0);
	input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
	set_bit(ABS_TOOL_WIDTH, dev->absbit);

	set_bit(EV_KEY, dev->evbit);
	set_bit(BTN_TOUCH, dev->keybit);
	set_bit(BTN_TOOL_FINGER, dev->keybit);
	set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
	set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);

	set_bit(BTN_LEFT, dev->keybit);
	set_bit(BTN_RIGHT, dev->keybit);

	if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
		set_bit(BTN_MIDDLE, dev->keybit);

	if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
	    SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
		set_bit(BTN_FORWARD, dev->keybit);
		set_bit(BTN_BACK, dev->keybit);
	}

	for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
		set_bit(BTN_0 + i, dev->keybit);

	clear_bit(EV_REL, dev->evbit);
	clear_bit(REL_X, dev->relbit);
	clear_bit(REL_Y, dev->relbit);
}

void synaptics_reset(struct psmouse *psmouse)
{
	/* reset touchpad back to relative mode, gestures enabled */
	synaptics_mode_cmd(psmouse, 0);
}

static void synaptics_disconnect(struct psmouse *psmouse)
{
	synaptics_reset(psmouse);
	kfree(psmouse->private);
	psmouse->private = NULL;
}

static int synaptics_reconnect(struct psmouse *psmouse)
{
	struct synaptics_data *priv = psmouse->private;
	struct synaptics_data old_priv = *priv;

	if (synaptics_detect(psmouse, 0))
		return -1;

	if (synaptics_query_hardware(psmouse)) {
		printk(KERN_ERR "Unable to query Synaptics hardware.\n");
		return -1;
	}

	if (old_priv.identity != priv->identity ||
	    old_priv.model_id != priv->model_id ||
	    old_priv.capabilities != priv->capabilities ||
	    old_priv.ext_cap != priv->ext_cap)
		return -1;

	if (synaptics_set_absolute_mode(psmouse)) {
		printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
		return -1;
	}

	return 0;
}

int synaptics_detect(struct psmouse *psmouse, int set_properties)
{
	struct ps2dev *ps2dev = &psmouse->ps2dev;
	unsigned char param[4];

	param[0] = 0;

	ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
	ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
	ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
	ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
	ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);

	if (param[1] != 0x47)
		return -1;

	if (set_properties) {
		psmouse->vendor = "Synaptics";
		psmouse->name = "TouchPad";
	}

	return 0;
}

#if defined(__i386__)
#include <linux/dmi.h>
static struct dmi_system_id toshiba_dmi_table[] = {
	{
		.ident = "Toshiba Satellite",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
			DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
		},
	},
	{
		.ident = "Toshiba Dynabook",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
			DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
		},
	},
	{
		.ident = "Toshiba Portege M300",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
			DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
		},
	},
	{ }
};
#endif

int synaptics_init(struct psmouse *psmouse)
{
	struct synaptics_data *priv;

	psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
	if (!priv)
		return -1;

	if (synaptics_query_hardware(psmouse)) {
		printk(KERN_ERR "Unable to query Synaptics hardware.\n");
		goto init_fail;
	}

	if (synaptics_set_absolute_mode(psmouse)) {
		printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
		goto init_fail;
	}

	priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;

	printk(KERN_INFO "Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx\n",
		SYN_ID_MODEL(priv->identity),
		SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
		priv->model_id, priv->capabilities, priv->ext_cap);

	set_input_params(psmouse->dev, priv);

	psmouse->protocol_handler = synaptics_process_byte;
	psmouse->set_rate = synaptics_set_rate;
	psmouse->disconnect = synaptics_disconnect;
	psmouse->reconnect = synaptics_reconnect;
	psmouse->pktsize = 6;
	/* Synaptics can usually stay in sync without extra help */
	psmouse->resync_time = 0;

	if (SYN_CAP_PASS_THROUGH(priv->capabilities))
		synaptics_pt_create(psmouse);

#if defined(__i386__)
	/*
	 * Toshiba's KBC seems to have trouble handling data from
	 * Synaptics as full rate, switch to lower rate which is roughly
	 * thye same as rate of standard PS/2 mouse.
	 */
	if (psmouse->rate >= 80 && dmi_check_system(toshiba_dmi_table)) {
		printk(KERN_INFO "synaptics: Toshiba %s detected, limiting rate to 40pps.\n",
			dmi_get_system_info(DMI_PRODUCT_NAME));
		psmouse->rate = 40;
	}
#endif

	return 0;

 init_fail:
	kfree(priv);
	return -1;
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Synaptics TouchPad PS/2 mouse driver
	3	*
	4	* 2003 Dmitry Torokhov <dtor@mail.ru>
	5	* Added support for pass-through port. Special thanks to Peter Berg Larsen
	6	* for explaining various Synaptics quirks.
	7	*
	8	* 2003 Peter Osterlund <petero2@telia.com>
	9	* Ported to 2.5 input device infrastructure.
	10	*
	11	* Copyright (C) 2001 Stefan Gmeiner <riddlebox@freesurf.ch>
	12	* start merging tpconfig and gpm code to a xfree-input module
	13	* adding some changes and extensions (ex. 3rd and 4th button)
	14	*
	15	* Copyright (c) 1997 C. Scott Ananian <cananian@alumni.priceton.edu>
	16	* Copyright (c) 1998-2000 Bruce Kalk <kall@compass.com>
	17	* code for the special synaptics commands (from the tpconfig-source)
	18	*
	19	* This program is free software; you can redistribute it and/or modify it
	20	* under the terms of the GNU General Public License version 2 as published by
	21	* the Free Software Foundation.
	22	*
	23	* Trademarks are the property of their respective owners.
	24	*/
	25
	26	#include <linux/module.h>
	27	#include <linux/input.h>
	28	#include <linux/serio.h>
	29	#include <linux/libps2.h>
	30	#include "psmouse.h"
	31	#include "synaptics.h"
	32
	33	/*
	34	* The x/y limits are taken from the Synaptics TouchPad interfacing Guide,
	35	* section 2.3.2, which says that they should be valid regardless of the
	36	* actual size of the sensor.
	37	*/
	38	#define XMIN_NOMINAL 1472
	39	#define XMAX_NOMINAL 5472
	40	#define YMIN_NOMINAL 1408
	41	#define YMAX_NOMINAL 4448
	42
	43	/*****************************************************************************
	44	* Synaptics communications functions
	45	****************************************************************************/
	46
	47	/*
	48	* Send a command to the synpatics touchpad by special commands
	49	*/
	50	static int synaptics_send_cmd(struct psmouse psmouse, unsigned char c, unsigned char param)
	51	{
	52	if (psmouse_sliced_command(psmouse, c))
	53	return -1;
	54	if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
	55	return -1;
	56	return 0;
	57	}
	58
	59	/*
	60	* Set the synaptics touchpad mode byte by special commands
	61	*/
	62	static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode)
	63	{
	64	unsigned char param[1];
65
66	if (psmouse_sliced_command(psmouse, mode))
67	return -1;
68	param[0] = SYN_PS_SET_MODE2;
69	if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE))
70	return -1;
71	return 0;
72	}
73
74	/*
75	* Read the model-id bytes from the touchpad
76	* see also SYN_MODEL_* macros
77	*/
78	static int synaptics_model_id(struct psmouse *psmouse)
79	{
80	struct synaptics_data *priv = psmouse->private;
81	unsigned char mi[3];
82
83	if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi))
84	return -1;
85	priv->model_id = (mi[0]<<16) \| (mi[1]<<8) \| mi[2];
86	return 0;
87	}
88
89	/*
90	* Read the capability-bits from the touchpad
91	* see also the SYN_CAP_* macros
92	*/
93	static int synaptics_capability(struct psmouse *psmouse)
94	{
95	struct synaptics_data *priv = psmouse->private;
96	unsigned char cap[3];
97
98	if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
99	return -1;
100	priv->capabilities = (cap[0] << 16) \| (cap[1] << 8) \| cap[2];
101	priv->ext_cap = 0;
102	if (!SYN_CAP_VALID(priv->capabilities))
103	return -1;
104
105	/*
106	* Unless capExtended is set the rest of the flags should be ignored
107	*/
108	if (!SYN_CAP_EXTENDED(priv->capabilities))
109	priv->capabilities = 0;
110
111	if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
112	if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
113	printk(KERN_ERR "Synaptics claims to have extended capabilities,"
114	" but I'm not able to read them.");
115	} else {
116	priv->ext_cap = (cap[0] << 16) \| (cap[1] << 8) \| cap[2];
117
118	/*
119	* if nExtBtn is greater than 8 it should be considered
120	* invalid and treated as 0
121	*/
122	if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8)
123	priv->ext_cap &= 0xff0fff;
124	}
125	}
126	return 0;
127	}
128
129	/*
130	* Identify Touchpad
131	* See also the SYN_ID_* macros
132	*/
133	static int synaptics_identify(struct psmouse *psmouse)
134	{
135	struct synaptics_data *priv = psmouse->private;
136	unsigned char id[3];
137
138	if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
139	return -1;
140	priv->identity = (id[0]<<16) \| (id[1]<<8) \| id[2];
141	if (SYN_ID_IS_SYNAPTICS(priv->identity))
142	return 0;
143	return -1;
144	}
145
1da177e4 LT	146	static int synaptics_query_hardware(struct psmouse *psmouse)
	147	{
	148	int retries = 0;
	149
	150	while ((retries++ < 3) && psmouse_reset(psmouse))
	151	printk(KERN_ERR "synaptics reset failed\n");
	152
	153	if (synaptics_identify(psmouse))
	154	return -1;
	155	if (synaptics_model_id(psmouse))
	156	return -1;
	157	if (synaptics_capability(psmouse))
	158	return -1;
	159
	160	return 0;
	161	}
	162
	163	static int synaptics_set_absolute_mode(struct psmouse *psmouse)
	164	{
	165	struct synaptics_data *priv = psmouse->private;
	166
	167	priv->mode = SYN_BIT_ABSOLUTE_MODE;
	168	if (SYN_ID_MAJOR(priv->identity) >= 4)
	169	priv->mode \|= SYN_BIT_DISABLE_GESTURE;
	170	if (SYN_CAP_EXTENDED(priv->capabilities))
	171	priv->mode \|= SYN_BIT_W_MODE;
	172
	173	if (synaptics_mode_cmd(psmouse, priv->mode))
	174	return -1;
	175
	176	return 0;
	177	}
	178
	179	static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
	180	{
	181	struct synaptics_data *priv = psmouse->private;
	182
	183	if (rate >= 80) {
	184	priv->mode \|= SYN_BIT_HIGH_RATE;
	185	psmouse->rate = 80;
	186	} else {
	187	priv->mode &= ~SYN_BIT_HIGH_RATE;
	188	psmouse->rate = 40;
	189	}
	190
	191	synaptics_mode_cmd(psmouse, priv->mode);
	192	}
	193
	194	/*****************************************************************************
	195	* Synaptics pass-through PS/2 port support
	196	****************************************************************************/
	197	static int synaptics_pt_write(struct serio *serio, unsigned char c)
	198	{
	199	struct psmouse *parent = serio_get_drvdata(serio->parent);
	200	char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
	201
	202	if (psmouse_sliced_command(parent, c))
	203	return -1;
	204	if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
	205	return -1;
	206	return 0;
	207	}
	208
	209	static inline int synaptics_is_pt_packet(unsigned char *buf)
210	{
211	return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
212	}
213
214	static void synaptics_pass_pt_packet(struct serio ptport, unsigned char packet)
215	{
216	struct psmouse *child = serio_get_drvdata(ptport);
217
218	if (child && child->state == PSMOUSE_ACTIVATED) {
7d12e780 DH	219	serio_interrupt(ptport, packet[1], 0);
	220	serio_interrupt(ptport, packet[4], 0);
	221	serio_interrupt(ptport, packet[5], 0);
33fdfa97	222	if (child->pktsize == 4)
7d12e780	223	serio_interrupt(ptport, packet[2], 0);
1da177e4	224	} else
7d12e780	225	serio_interrupt(ptport, packet[1], 0);
1da177e4 LT	226	}
	227
	228	static void synaptics_pt_activate(struct psmouse *psmouse)
	229	{
	230	struct serio *ptport = psmouse->ps2dev.serio->child;
	231	struct psmouse *child = serio_get_drvdata(ptport);
	232	struct synaptics_data *priv = psmouse->private;
	233
	234	/* adjust the touchpad to child's choice of protocol */
	235	if (child) {
33fdfa97	236	if (child->pktsize == 4)
1da177e4 LT	237	priv->mode \|= SYN_BIT_FOUR_BYTE_CLIENT;
	238	else
	239	priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
	240
	241	if (synaptics_mode_cmd(psmouse, priv->mode))
	242	printk(KERN_INFO "synaptics: failed to switch guest protocol\n");
	243	}
	244	}
	245
	246	static void synaptics_pt_create(struct psmouse *psmouse)
	247	{
	248	struct serio *serio;
	249
b39787a9	250	serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
1da177e4 LT	251	if (!serio) {
	252	printk(KERN_ERR "synaptics: not enough memory to allocate pass-through port\n");
	253	return;
	254	}
	255
1da177e4 LT	256	serio->id.type = SERIO_PS_PSTHRU;
	257	strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
	258	strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
	259	serio->write = synaptics_pt_write;
	260	serio->parent = psmouse->ps2dev.serio;
	261
	262	psmouse->pt_activate = synaptics_pt_activate;
	263
	264	printk(KERN_INFO "serio: %s port at %s\n", serio->name, psmouse->phys);
	265	serio_register_port(serio);
	266	}
	267
	268	/*****************************************************************************
	269	* Functions to interpret the absolute mode packets
	270	****************************************************************************/
	271
	272	static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data priv, struct synaptics_hw_state hw)
	273	{
	274	memset(hw, 0, sizeof(struct synaptics_hw_state));
	275
	276	if (SYN_MODEL_NEWABS(priv->model_id)) {
	277	hw->x = (((buf[3] & 0x10) << 8) \|
	278	((buf[1] & 0x0f) << 8) \|
	279	buf[4]);
	280	hw->y = (((buf[3] & 0x20) << 7) \|
	281	((buf[1] & 0xf0) << 4) \|
	282	buf[5]);
	283
	284	hw->z = buf[2];
	285	hw->w = (((buf[0] & 0x30) >> 2) \|
	286	((buf[0] & 0x04) >> 1) \|
	287	((buf[3] & 0x04) >> 2));
	288
	289	hw->left = (buf[0] & 0x01) ? 1 : 0;
	290	hw->right = (buf[0] & 0x02) ? 1 : 0;
	291
	292	if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
	293	hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
	294	if (hw->w == 2)
	295	hw->scroll = (signed char)(buf[1]);
	296	}
	297
	298	if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
	299	hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
	300	hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
	301	}
	302
	303	if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
	304	((buf[0] ^ buf[3]) & 0x02)) {
	305	switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
	306	default:
	307	/*
	308	* if nExtBtn is greater than 8 it should be
	309	* considered invalid and treated as 0
	310	*/
	311	break;
	312	case 8:
	313	hw->ext_buttons \|= ((buf[5] & 0x08)) ? 0x80 : 0;
	314	hw->ext_buttons \|= ((buf[4] & 0x08)) ? 0x40 : 0;
	315	case 6:
	316	hw->ext_buttons \|= ((buf[5] & 0x04)) ? 0x20 : 0;
	317	hw->ext_buttons \|= ((buf[4] & 0x04)) ? 0x10 : 0;
	318	case 4:
	319	hw->ext_buttons \|= ((buf[5] & 0x02)) ? 0x08 : 0;
320	hw->ext_buttons \|= ((buf[4] & 0x02)) ? 0x04 : 0;
321	case 2:
322	hw->ext_buttons \|= ((buf[5] & 0x01)) ? 0x02 : 0;
323	hw->ext_buttons \|= ((buf[4] & 0x01)) ? 0x01 : 0;
324	}
325	}
326	} else {
327	hw->x = (((buf[1] & 0x1f) << 8) \| buf[2]);
328	hw->y = (((buf[4] & 0x1f) << 8) \| buf[5]);
329
330	hw->z = (((buf[0] & 0x30) << 2) \| (buf[3] & 0x3F));
331	hw->w = (((buf[1] & 0x80) >> 4) \| ((buf[0] & 0x04) >> 1));
332
333	hw->left = (buf[0] & 0x01) ? 1 : 0;
334	hw->right = (buf[0] & 0x02) ? 1 : 0;
335	}
336	}
337
338	/*
339	* called for each full received packet from the touchpad
340	*/
341	static void synaptics_process_packet(struct psmouse *psmouse)
342	{
2e5b636b	343	struct input_dev *dev = psmouse->dev;
1da177e4 LT	344	struct synaptics_data *priv = psmouse->private;
	345	struct synaptics_hw_state hw;
	346	int num_fingers;
	347	int finger_width;
	348	int i;
	349
	350	synaptics_parse_hw_state(psmouse->packet, priv, &hw);
	351
	352	if (hw.scroll) {
	353	priv->scroll += hw.scroll;
	354
	355	while (priv->scroll >= 4) {
	356	input_report_key(dev, BTN_BACK, !hw.down);
	357	input_sync(dev);
	358	input_report_key(dev, BTN_BACK, hw.down);
	359	input_sync(dev);
	360	priv->scroll -= 4;
	361	}
	362	while (priv->scroll <= -4) {
	363	input_report_key(dev, BTN_FORWARD, !hw.up);
	364	input_sync(dev);
	365	input_report_key(dev, BTN_FORWARD, hw.up);
	366	input_sync(dev);
	367	priv->scroll += 4;
	368	}
	369	return;
	370	}
	371
	372	if (hw.z > 0) {
	373	num_fingers = 1;
	374	finger_width = 5;
	375	if (SYN_CAP_EXTENDED(priv->capabilities)) {
	376	switch (hw.w) {
	377	case 0 ... 1:
	378	if (SYN_CAP_MULTIFINGER(priv->capabilities))
	379	num_fingers = hw.w + 2;
	380	break;
	381	case 2:
	382	if (SYN_MODEL_PEN(priv->model_id))
	383	; /* Nothing, treat a pen as a single finger */
	384	break;
	385	case 4 ... 15:
	386	if (SYN_CAP_PALMDETECT(priv->capabilities))
	387	finger_width = hw.w;
	388	break;
	389	}
	390	}
	391	} else {
	392	num_fingers = 0;
	393	finger_width = 0;
	394	}
	395
	396	/* Post events
	397	* BTN_TOUCH has to be first as mousedev relies on it when doing
	398	* absolute -> relative conversion
	399	*/
	400	if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
	401	if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
	402
	403	if (hw.z > 0) {
	404	input_report_abs(dev, ABS_X, hw.x);
	405	input_report_abs(dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - hw.y);
	406	}
	407	input_report_abs(dev, ABS_PRESSURE, hw.z);
408
409	input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
410	input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
411	input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
412	input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
413
414	input_report_key(dev, BTN_LEFT, hw.left);
415	input_report_key(dev, BTN_RIGHT, hw.right);
416
417	if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
418	input_report_key(dev, BTN_MIDDLE, hw.middle);
419
420	if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
421	input_report_key(dev, BTN_FORWARD, hw.up);
422	input_report_key(dev, BTN_BACK, hw.down);
423	}
424
425	for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
426	input_report_key(dev, BTN_0 + i, hw.ext_buttons & (1 << i));
427
428	input_sync(dev);
429	}
430
431	static int synaptics_validate_byte(unsigned char packet[], int idx, unsigned char pkt_type)
432	{
e38de678 HD	433	static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
	434	static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
	435	static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
	436	static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
	437	static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
1da177e4 LT	438
	439	if (idx < 0 \|\| idx > 4)
	440	return 0;
	441
	442	switch (pkt_type) {
	443	case SYN_NEWABS:
	444	case SYN_NEWABS_RELAXED:
	445	return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
	446
	447	case SYN_NEWABS_STRICT:
	448	return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
	449
	450	case SYN_OLDABS:
	451	return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
	452
	453	default:
	454	printk(KERN_ERR "synaptics: unknown packet type %d\n", pkt_type);
	455	return 0;
	456	}
	457	}
	458
	459	static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
	460	{
	461	int i;
	462
	463	for (i = 0; i < 5; i++)
	464	if (!synaptics_validate_byte(psmouse->packet, i, SYN_NEWABS_STRICT)) {
	465	printk(KERN_INFO "synaptics: using relaxed packet validation\n");
	466	return SYN_NEWABS_RELAXED;
	467	}
	468
	469	return SYN_NEWABS_STRICT;
	470	}
	471
7d12e780	472	static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
1da177e4	473	{
1da177e4 LT	474	struct synaptics_data *priv = psmouse->private;
1da177e4 LT	475
1da177e4 LT	476	if (psmouse->pktcnt >= 6) { /* Full packet received */
	477	if (unlikely(priv->pkt_type == SYN_NEWABS))
	478	priv->pkt_type = synaptics_detect_pkt_type(psmouse);
	479
	480	if (SYN_CAP_PASS_THROUGH(priv->capabilities) && synaptics_is_pt_packet(psmouse->packet)) {
	481	if (psmouse->ps2dev.serio->child)
	482	synaptics_pass_pt_packet(psmouse->ps2dev.serio->child, psmouse->packet);
	483	} else
	484	synaptics_process_packet(psmouse);
	485
	486	return PSMOUSE_FULL_PACKET;
	487	}
	488
	489	return synaptics_validate_byte(psmouse->packet, psmouse->pktcnt - 1, priv->pkt_type) ?
	490	PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
	491	}
	492
	493	/*****************************************************************************
	494	* Driver initialization/cleanup functions
	495	****************************************************************************/
	496	static void set_input_params(struct input_dev dev, struct synaptics_data priv)
	497	{
	498	int i;
	499
	500	set_bit(EV_ABS, dev->evbit);
	501	input_set_abs_params(dev, ABS_X, XMIN_NOMINAL, XMAX_NOMINAL, 0, 0);
	502	input_set_abs_params(dev, ABS_Y, YMIN_NOMINAL, YMAX_NOMINAL, 0, 0);
	503	input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
	504	set_bit(ABS_TOOL_WIDTH, dev->absbit);
	505
	506	set_bit(EV_KEY, dev->evbit);
	507	set_bit(BTN_TOUCH, dev->keybit);
	508	set_bit(BTN_TOOL_FINGER, dev->keybit);
	509	set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
	510	set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
	511
	512	set_bit(BTN_LEFT, dev->keybit);
	513	set_bit(BTN_RIGHT, dev->keybit);
	514
	515	if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
	516	set_bit(BTN_MIDDLE, dev->keybit);
	517
	518	if (SYN_CAP_FOUR_BUTTON(priv->capabilities) \|\|
	519	SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
	520	set_bit(BTN_FORWARD, dev->keybit);
	521	set_bit(BTN_BACK, dev->keybit);
	522	}
	523
	524	for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
	525	set_bit(BTN_0 + i, dev->keybit);
	526
	527	clear_bit(EV_REL, dev->evbit);
	528	clear_bit(REL_X, dev->relbit);
	529	clear_bit(REL_Y, dev->relbit);
	530	}
	531
	532	void synaptics_reset(struct psmouse *psmouse)
	533	{
	534	/* reset touchpad back to relative mode, gestures enabled */
	535	synaptics_mode_cmd(psmouse, 0);
	536	}
	537
	538	static void synaptics_disconnect(struct psmouse *psmouse)
	539	{
540	synaptics_reset(psmouse);
541	kfree(psmouse->private);
542	psmouse->private = NULL;
543	}
544
545	static int synaptics_reconnect(struct psmouse *psmouse)
546	{
547	struct synaptics_data *priv = psmouse->private;
548	struct synaptics_data old_priv = *priv;
549
550	if (synaptics_detect(psmouse, 0))
551	return -1;
552
553	if (synaptics_query_hardware(psmouse)) {
554	printk(KERN_ERR "Unable to query Synaptics hardware.\n");
555	return -1;
556	}
557
558	if (old_priv.identity != priv->identity \|\|
559	old_priv.model_id != priv->model_id \|\|
560	old_priv.capabilities != priv->capabilities \|\|
561	old_priv.ext_cap != priv->ext_cap)
562	return -1;
563
564	if (synaptics_set_absolute_mode(psmouse)) {
565	printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
566	return -1;
567	}
568
569	return 0;
570	}
571
572	int synaptics_detect(struct psmouse *psmouse, int set_properties)
573	{
574	struct ps2dev *ps2dev = &psmouse->ps2dev;
575	unsigned char param[4];
576
577	param[0] = 0;
578
579	ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
580	ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
581	ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
582	ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
583	ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
584
585	if (param[1] != 0x47)
586	return -1;
587
588	if (set_properties) {
589	psmouse->vendor = "Synaptics";
590	psmouse->name = "TouchPad";
591	}
592
593	return 0;
594	}
595
596	#if defined(__i386__)
597	#include <linux/dmi.h>
598	static struct dmi_system_id toshiba_dmi_table[] = {
599	{
600	.ident = "Toshiba Satellite",
601	.matches = {
602	DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
53a2670c	603	DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
1da177e4 LT	604	},
1da177e4 LT	605	},
9ba5eaaf SH	606	{
	607	.ident = "Toshiba Dynabook",
	608	.matches = {
	609	DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
53a2670c RT	610	DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
	611	},
	612	},
	613	{
	614	.ident = "Toshiba Portege M300",
	615	.matches = {
	616	DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
	617	DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
9ba5eaaf SH	618	},
9ba5eaaf SH	619	},
1da177e4 LT	620	{ }
	621	};
	622	#endif
	623
	624	int synaptics_init(struct psmouse *psmouse)
	625	{
	626	struct synaptics_data *priv;
	627
b39787a9	628	psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
1da177e4 LT	629	if (!priv)
1da177e4 LT	630	return -1;
1da177e4 LT	631
	632	if (synaptics_query_hardware(psmouse)) {
	633	printk(KERN_ERR "Unable to query Synaptics hardware.\n");
	634	goto init_fail;
	635	}
	636
	637	if (synaptics_set_absolute_mode(psmouse)) {
	638	printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
	639	goto init_fail;
	640	}
	641
	642	priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
	643
409b7506 DT	644	printk(KERN_INFO "Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx\n",
	645	SYN_ID_MODEL(priv->identity),
	646	SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
	647	priv->model_id, priv->capabilities, priv->ext_cap);
	648
2e5b636b	649	set_input_params(psmouse->dev, priv);
1da177e4 LT	650
	651	psmouse->protocol_handler = synaptics_process_byte;
	652	psmouse->set_rate = synaptics_set_rate;
	653	psmouse->disconnect = synaptics_disconnect;
	654	psmouse->reconnect = synaptics_reconnect;
	655	psmouse->pktsize = 6;
f0d5c6f4 DT	656	/* Synaptics can usually stay in sync without extra help */
f0d5c6f4 DT	657	psmouse->resync_time = 0;
1da177e4 LT	658
	659	if (SYN_CAP_PASS_THROUGH(priv->capabilities))
	660	synaptics_pt_create(psmouse);
	661
	662	#if defined(__i386__)
	663	/*
	664	* Toshiba's KBC seems to have trouble handling data from
	665	* Synaptics as full rate, switch to lower rate which is roughly
	666	* thye same as rate of standard PS/2 mouse.
	667	*/
	668	if (psmouse->rate >= 80 && dmi_check_system(toshiba_dmi_table)) {
9ba5eaaf SH	669	printk(KERN_INFO "synaptics: Toshiba %s detected, limiting rate to 40pps.\n",
9ba5eaaf SH	670	dmi_get_system_info(DMI_PRODUCT_NAME));
1da177e4 LT	671	psmouse->rate = 40;
	672	}
	673	#endif
	674
	675	return 0;
	676
	677	init_fail:
	678	kfree(priv);
	679	return -1;
	680	}
	681
	682