/* * Logitech PS/2++ mouse driver * * Copyright (c) 1999-2003 Vojtech Pavlik <vojtech@suse.cz> * Copyright (c) 2003 Eric Wong <eric@yhbt.net> * * 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 "psmouse.h"#include "logips2pp.h"/* Logitech mouse types */#define PS2PP_KIND_WHEEL	1#define PS2PP_KIND_MX		2#define PS2PP_KIND_TP3		3/* Logitech mouse features */#define PS2PP_WHEEL		0x01#define PS2PP_HWHEEL		0x02#define PS2PP_SIDE_BTN		0x04#define PS2PP_EXTRA_BTN		0x08#define PS2PP_TASK_BTN		0x10#define PS2PP_NAV_BTN		0x20struct ps2pp_info {	const int model;	unsigned const int kind;	unsigned const int features;};/* * Process a PS2++ or PS2T++ packet. */static psmouse_ret_t ps2pp_process_byte(struct psmouse *psmouse, struct pt_regs *regs){	struct input_dev *dev = &psmouse->dev;	unsigned char *packet = psmouse->packet;	if (psmouse->pktcnt < 3)		return PSMOUSE_GOOD_DATA;/* * Full packet accumulated, process it */	input_regs(dev, regs);	if ((packet[0] & 0x48) == 0x48 && (packet[1] & 0x02) == 0x02) {		/* Logitech extended packet */		switch ((packet[1] >> 4) | (packet[0] & 0x30)) {			case 0x0d: /* Mouse extra info */				input_report_rel(dev, packet[2] & 0x80 ? REL_HWHEEL : REL_WHEEL,					(int) (packet[2] & 8) - (int) (packet[2] & 7));				input_report_key(dev, BTN_SIDE, (packet[2] >> 4) & 1);				input_report_key(dev, BTN_EXTRA, (packet[2] >> 5) & 1);				break;			case 0x0e: /* buttons 4, 5, 6, 7, 8, 9, 10 info */				input_report_key(dev, BTN_SIDE, (packet[2]) & 1);				input_report_key(dev, BTN_EXTRA, (packet[2] >> 1) & 1);				input_report_key(dev, BTN_BACK, (packet[2] >> 3) & 1);				input_report_key(dev, BTN_FORWARD, (packet[2] >> 4) & 1);				input_report_key(dev, BTN_TASK, (packet[2] >> 2) & 1);				break;			case 0x0f: /* TouchPad extra info */				input_report_rel(dev, packet[2] & 0x08 ? REL_HWHEEL : REL_WHEEL,					(int) ((packet[2] >> 4) & 8) - (int) ((packet[2] >> 4) & 7));				packet[0] = packet[2] | 0x08;				break;#ifdef DEBUG			default:				printk(KERN_WARNING "psmouse.c: Received PS2++ packet #%x, but don't know how to handle.\n",					(packet[1] >> 4) | (packet[0] & 0x30));#endif		}	} else {		/* Standard PS/2 motion data */		input_report_rel(dev, REL_X, packet[1] ? (int) packet[1] - (int) ((packet[0] << 4) & 0x100) : 0);		input_report_rel(dev, REL_Y, packet[2] ? (int) ((packet[0] << 3) & 0x100) - (int) packet[2] : 0);	}	input_report_key(dev, BTN_LEFT,    packet[0]       & 1);	input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1);	input_report_key(dev, BTN_RIGHT,  (packet[0] >> 1) & 1);	input_sync(dev);	return PSMOUSE_FULL_PACKET;}/* * ps2pp_cmd() sends a PS2++ command, sliced into two bit * pieces through the SETRES command. This is needed to send extended * commands to mice on notebooks that try to understand the PS/2 protocol * Ugly. */static int ps2pp_cmd(struct psmouse *psmouse, unsigned char *param, unsigned char command){	if (psmouse_sliced_command(psmouse, command))		return -1;	if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_POLL))		return -1;	return 0;}/* * SmartScroll / CruiseControl for some newer Logitech mice Defaults to * enabled if we do nothing to it. Of course I put this in because I want it * disabled :P * 1 - enabled (if previously disabled, also default) * 0 - disabled */static void ps2pp_set_smartscroll(struct psmouse *psmouse, unsigned int smartscroll){	struct ps2dev *ps2dev = &psmouse->ps2dev;	unsigned char param[4];	if (smartscroll > 1)		smartscroll = 1;	ps2pp_cmd(psmouse, param, 0x32);	param[0] = 0;	ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);	ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);	ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);	param[0] = smartscroll;	ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);}static ssize_t psmouse_attr_show_smartscroll(struct psmouse *psmouse, char *buf){	return sprintf(buf, "%d\n", psmouse->smartscroll ? 1 : 0);}static ssize_t psmouse_attr_set_smartscroll(struct psmouse *psmouse, const char *buf, size_t count){	unsigned long value;	char *rest;	value = simple_strtoul(buf, &rest, 10);	if (*rest || value > 1)		return -EINVAL;	ps2pp_set_smartscroll(psmouse, value);	psmouse->smartscroll = value;	return count;}PSMOUSE_DEFINE_ATTR(smartscroll);/* * Support 800 dpi resolution _only_ if the user wants it (there are good * reasons to not use it even if the mouse supports it, and of course there are * also good reasons to use it, let the user decide). */static void ps2pp_set_resolution(struct psmouse *psmouse, unsigned int resolution){	if (resolution > 400) {		struct ps2dev *ps2dev = &psmouse->ps2dev;		unsigned char param = 3;		ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);		ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);		ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);		ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);		psmouse->resolution = 800;	} else		psmouse_set_resolution(psmouse, resolution);}static void ps2pp_disconnect(struct psmouse *psmouse){	device_remove_file(&psmouse->ps2dev.serio->dev, &psmouse_attr_smartscroll);}static struct ps2pp_info *get_model_info(unsigned char model){	static struct ps2pp_info ps2pp_list[] = {		{ 12,	0,			PS2PP_SIDE_BTN},		{ 13,	0,			0 },		{ 15,	PS2PP_KIND_MX,					/* MX1000 */				PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN |				PS2PP_EXTRA_BTN | PS2PP_NAV_BTN | PS2PP_HWHEEL },		{ 40,	0,			PS2PP_SIDE_BTN },		{ 41,	0,			PS2PP_SIDE_BTN },		{ 42,	0,			PS2PP_SIDE_BTN },		{ 43,	0,			PS2PP_SIDE_BTN },		{ 50,	0,			0 },		{ 51,	0,			0 },		{ 52,	PS2PP_KIND_WHEEL,	PS2PP_SIDE_BTN | PS2PP_WHEEL },		{ 53,	PS2PP_KIND_WHEEL,	PS2PP_WHEEL },		{ 61,	PS2PP_KIND_MX,					/* MX700 */				PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN |				PS2PP_EXTRA_BTN | PS2PP_NAV_BTN },		{ 73,	0,			PS2PP_SIDE_BTN },		{ 75,	PS2PP_KIND_WHEEL,	PS2PP_WHEEL },		{ 76,	PS2PP_KIND_WHEEL,	PS2PP_WHEEL },		{ 80,	PS2PP_KIND_WHEEL,	PS2PP_SIDE_BTN | PS2PP_WHEEL },		{ 81,	PS2PP_KIND_WHEEL,	PS2PP_WHEEL },		{ 83,	PS2PP_KIND_WHEEL,	PS2PP_WHEEL },		{ 88,	PS2PP_KIND_WHEEL,	PS2PP_WHEEL },		{ 96,	0,			0 },		{ 97,	PS2PP_KIND_TP3,		PS2PP_WHEEL | PS2PP_HWHEEL },		{ 100,	PS2PP_KIND_MX,					/* MX510 */				PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN |				PS2PP_EXTRA_BTN | PS2PP_NAV_BTN },		{ 111,  PS2PP_KIND_MX,					/* MX300 */				PS2PP_WHEEL | PS2PP_EXTRA_BTN | PS2PP_TASK_BTN },		{ 112,	PS2PP_KIND_MX,					/* MX500 */				PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN |				PS2PP_EXTRA_BTN | PS2PP_NAV_BTN },		{ 114,	PS2PP_KIND_MX,					/* MX310 */				PS2PP_WHEEL | PS2PP_SIDE_BTN |				PS2PP_TASK_BTN | PS2PP_EXTRA_BTN },		{ }	};	int i;	for (i = 0; ps2pp_list[i].model; i++)		if (model == ps2pp_list[i].model)			return &ps2pp_list[i];	printk(KERN_WARNING "logips2pp: Detected unknown logitech mouse model %d\n", model);	return NULL;}/* * Set up input device's properties based on the detected mouse model. */static void ps2pp_set_model_properties(struct psmouse *psmouse, struct ps2pp_info *model_info,				       int using_ps2pp){	if (model_info->features & PS2PP_SIDE_BTN)		set_bit(BTN_SIDE, psmouse->dev.keybit);	if (model_info->features & PS2PP_EXTRA_BTN)		set_bit(BTN_EXTRA, psmouse->dev.keybit);	if (model_info->features & PS2PP_TASK_BTN)		set_bit(BTN_TASK, psmouse->dev.keybit);	if (model_info->features & PS2PP_NAV_BTN) {		set_bit(BTN_FORWARD, psmouse->dev.keybit);		set_bit(BTN_BACK, psmouse->dev.keybit);	}	if (model_info->features & PS2PP_WHEEL)		set_bit(REL_WHEEL, psmouse->dev.relbit);	if (model_info->features & PS2PP_HWHEEL)		set_bit(REL_HWHEEL, psmouse->dev.relbit);	switch (model_info->kind) {		case PS2PP_KIND_WHEEL:			psmouse->name = "Wheel Mouse";			break;		case PS2PP_KIND_MX:			psmouse->name = "MX Mouse";			break;		case PS2PP_KIND_TP3:			psmouse->name = "TouchPad 3";			break;		default:			/*			 * Set name to "Mouse" only when using PS2++,			 * otherwise let other protocols define suitable			 * name			 */			if (using_ps2pp)				psmouse->name = "Mouse";			break;	}}/* * Logitech magic init. Detect whether the mouse is a Logitech one * and its exact model and try turning on extended protocol for ones * that support it. */int ps2pp_init(struct psmouse *psmouse, int set_properties){	struct ps2dev *ps2dev = &psmouse->ps2dev;	unsigned char param[4];	unsigned char model, buttons;	struct ps2pp_info *model_info;	int use_ps2pp = 0;	param[0] = 0;	ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);	ps2_command(ps2dev,  NULL, PSMOUSE_CMD_SETSCALE11);	ps2_command(ps2dev,  NULL, PSMOUSE_CMD_SETSCALE11);	ps2_command(ps2dev,  NULL, PSMOUSE_CMD_SETSCALE11);	param[1] = 0;	ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);	if (!param[1])		return -1;	model = ((param[0] >> 4) & 0x07) | ((param[0] << 3) & 0x78);	buttons = param[1];	if ((model_info = get_model_info(model)) != NULL) {/* * Do Logitech PS2++ / PS2T++ magic init. */		if (model == 97) { /* Touch Pad 3 */			/* Unprotect RAM */			param[0] = 0x11; param[1] = 0x04; param[2] = 0x68;			ps2_command(ps2dev, param, 0x30d1);			/* Enable features */			param[0] = 0x11; param[1] = 0x05; param[2] = 0x0b;			ps2_command(ps2dev, param, 0x30d1);			/* Enable PS2++ */			param[0] = 0x11; param[1] = 0x09; param[2] = 0xc3;			ps2_command(ps2dev, param, 0x30d1);			param[0] = 0;			if (!ps2_command(ps2dev, param, 0x13d1) &&			    param[0] == 0x06 && param[1] == 0x00 && param[2] == 0x14) {				use_ps2pp = 1;			}		} else {			param[0] = param[1] = param[2] = 0;			ps2pp_cmd(psmouse, param, 0x39); /* Magic knock */			ps2pp_cmd(psmouse, param, 0xDB);			if ((param[0] & 0x78) == 0x48 &&			    (param[1] & 0xf3) == 0xc2 &&			    (param[2] & 0x03) == ((param[1] >> 2) & 3)) {				ps2pp_set_smartscroll(psmouse, psmouse->smartscroll);				use_ps2pp = 1;			}		}	}	if (set_properties) {		psmouse->vendor = "Logitech";		psmouse->model = model;		if (use_ps2pp) {			psmouse->protocol_handler = ps2pp_process_byte;			psmouse->pktsize = 3;			if (model_info->kind != PS2PP_KIND_TP3) {				psmouse->set_resolution = ps2pp_set_resolution;				psmouse->disconnect = ps2pp_disconnect;				device_create_file(&psmouse->ps2dev.serio->dev, &psmouse_attr_smartscroll);			}		}		if (buttons < 3)			clear_bit(BTN_MIDDLE, psmouse->dev.keybit);		if (model_info)			ps2pp_set_model_properties(psmouse, model_info, use_ps2pp);	}	return use_ps2pp ? 0 : -1;}