/* * Fujitsu B-series Lifebook PS/2 TouchScreen driver * * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz> * Copyright (c) 2005 Kenan Esau <kenan.esau@conan.de> * * TouchScreen detection, absolute mode setting and packet layout is taken from * Harald Hoyer's description of the device. * * 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. */#include <linux/input.h>#include <linux/serio.h>#include <linux/libps2.h>#include <linux/dmi.h>#include "psmouse.h"#include "lifebook.h"static struct dmi_system_id lifebook_dmi_table[] = {       {               .ident = "Lifebook B",               .matches = {                       DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK B Series"),               },       },       { }};static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse, struct pt_regs *regs){	unsigned char *packet = psmouse->packet;	struct input_dev *dev = &psmouse->dev;	if (psmouse->pktcnt != 3)		return PSMOUSE_GOOD_DATA;	input_regs(dev, regs);	/* calculate X and Y */	if ((packet[0] & 0x08) == 0x00) {		input_report_abs(dev, ABS_X,				 (packet[1] | ((packet[0] & 0x30) << 4)));		input_report_abs(dev, ABS_Y,				 1024 - (packet[2] | ((packet[0] & 0xC0) << 2)));	} else {		input_report_rel(dev, REL_X,				((packet[0] & 0x10) ? packet[1] - 256 : packet[1]));		input_report_rel(dev, REL_Y,				 -(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2]));	}	input_report_key(dev, BTN_LEFT, packet[0] & 0x01);	input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);	input_report_key(dev, BTN_TOUCH, packet[0] & 0x04);	input_sync(dev);	return PSMOUSE_FULL_PACKET;}static int lifebook_absolute_mode(struct psmouse *psmouse){	struct ps2dev *ps2dev = &psmouse->ps2dev;	unsigned char param;	if (psmouse_reset(psmouse))		return -1;	/*	   Enable absolute output -- ps2_command fails always but if	   you leave this call out the touchsreen will never send	   absolute coordinates	*/	param = 0x07;	ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);	return 0;}static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution){	unsigned char params[] = { 0, 1, 2, 2, 3 };	if (resolution == 0 || resolution > 400)		resolution = 400;	ps2_command(&psmouse->ps2dev, &params[resolution / 100], PSMOUSE_CMD_SETRES);	psmouse->resolution = 50 << params[resolution / 100];}static void lifebook_disconnect(struct psmouse *psmouse){	psmouse_reset(psmouse);}int lifebook_detect(struct psmouse *psmouse, int set_properties){        if (!dmi_check_system(lifebook_dmi_table))                return -1;	if (set_properties) {		psmouse->vendor = "Fujitsu";		psmouse->name = "Lifebook TouchScreen";	}        return 0;}int lifebook_init(struct psmouse *psmouse){	if (lifebook_absolute_mode(psmouse))		return -1;	psmouse->dev.evbit[0] = BIT(EV_ABS) | BIT(EV_KEY) | BIT(EV_REL);	psmouse->dev.keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);	psmouse->dev.keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);	psmouse->dev.relbit[0] = BIT(REL_X) | BIT(REL_Y);	input_set_abs_params(&psmouse->dev, ABS_X, 0, 1024, 0, 0);	input_set_abs_params(&psmouse->dev, ABS_Y, 0, 1024, 0, 0);	psmouse->protocol_handler = lifebook_process_byte;	psmouse->set_resolution = lifebook_set_resolution;	psmouse->disconnect = lifebook_disconnect;	psmouse->reconnect  = lifebook_absolute_mode;	psmouse->pktsize = 3;	return 0;}