/* * 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#define PS2PP_KIND_TRACKMAN	4 /* 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		0x20 struct ps2pp_info {	u8 model;	u8 kind;	u16 features;}; /* * Process a PS2++ or PS2T++ packet. */ static psmouse_ret_t ps2pp_process_byte(struct psmouse *psmouse){	struct input_dev *dev = psmouse->dev;	unsigned char *packet = psmouse->packet; 	if (psmouse->pktcnt < 3)		return PSMOUSE_GOOD_DATA; /* * Full packet accumulated, process it */ 	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; 		default:			psmouse_dbg(psmouse,				    "Received PS2++ packet #%x, but don't know how to handle.\n",				    (packet[1] >> 4) | (packet[0] & 0x30));			break;		}	} 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 | 0x0300))		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, bool smartscroll){	struct ps2dev *ps2dev = &psmouse->ps2dev;	unsigned char param[4]; 	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 ps2pp_attr_show_smartscroll(struct psmouse *psmouse,					   void *data, char *buf){	return sprintf(buf, "%d\n", psmouse->smartscroll);} static ssize_t ps2pp_attr_set_smartscroll(struct psmouse *psmouse, void *data,					  const char *buf, size_t count){	unsigned int value;	int err; 	err = kstrtouint(buf, 10, &value);	if (err)		return err; 	if (value > 1)		return -EINVAL; 	ps2pp_set_smartscroll(psmouse, value);	psmouse->smartscroll = value;	return count;} PSMOUSE_DEFINE_ATTR(smartscroll, S_IWUSR | S_IRUGO, NULL,			ps2pp_attr_show_smartscroll, ps2pp_attr_set_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.dattr);} static const struct ps2pp_info *get_model_info(unsigned char model){	static const struct ps2pp_info ps2pp_list[] = {		{  1,	0,			0 },	/* Simple 2-button mouse */		{ 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 },		{ 56,	PS2PP_KIND_WHEEL,	PS2PP_SIDE_BTN | PS2PP_WHEEL }, /* Cordless MouseMan Wheel */		{ 61,	PS2PP_KIND_MX,					/* MX700 */				PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN |				PS2PP_EXTRA_BTN | PS2PP_NAV_BTN },		{ 66,	PS2PP_KIND_MX,					/* MX3100 receiver */				PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN |				PS2PP_EXTRA_BTN | PS2PP_NAV_BTN | PS2PP_HWHEEL },		{ 72,	PS2PP_KIND_TRACKMAN,	0 },			/* T-CH11: TrackMan Marble */		{ 73,	PS2PP_KIND_TRACKMAN,	PS2PP_SIDE_BTN },	/* TrackMan FX */		{ 75,	PS2PP_KIND_WHEEL,	PS2PP_WHEEL },		{ 76,	PS2PP_KIND_WHEEL,	PS2PP_WHEEL },		{ 79,	PS2PP_KIND_TRACKMAN,	PS2PP_WHEEL },		/* TrackMan with wheel */		{ 80,	PS2PP_KIND_WHEEL,	PS2PP_SIDE_BTN | PS2PP_WHEEL },		{ 81,	PS2PP_KIND_WHEEL,	PS2PP_WHEEL },		{ 83,	PS2PP_KIND_WHEEL,	PS2PP_WHEEL },		{ 85,	PS2PP_KIND_WHEEL,	PS2PP_WHEEL },		{ 86,	PS2PP_KIND_WHEEL,	PS2PP_WHEEL },		{ 87,	PS2PP_KIND_WHEEL,	PS2PP_WHEEL },		{ 88,	PS2PP_KIND_WHEEL,	PS2PP_WHEEL },		{ 96,	0,			0 },		{ 97,	PS2PP_KIND_TP3,		PS2PP_WHEEL | PS2PP_HWHEEL },		{ 99,	PS2PP_KIND_WHEEL,	PS2PP_WHEEL },		{ 100,	PS2PP_KIND_MX,					/* MX510 */				PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN |				PS2PP_EXTRA_BTN | PS2PP_NAV_BTN },		{ 111,  PS2PP_KIND_MX,	PS2PP_WHEEL | PS2PP_SIDE_BTN },	/* MX300 reports task button as side */		{ 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; i < ARRAY_SIZE(ps2pp_list); i++)		if (model == ps2pp_list[i].model)			return &ps2pp_list[i]; 	return NULL;} /* * Set up input device's properties based on the detected mouse model. */ static void ps2pp_set_model_properties(struct psmouse *psmouse,				       const struct ps2pp_info *model_info,				       bool using_ps2pp){	struct input_dev *input_dev = psmouse->dev; 	if (model_info->features & PS2PP_SIDE_BTN)		__set_bit(BTN_SIDE, input_dev->keybit); 	if (model_info->features & PS2PP_EXTRA_BTN)		__set_bit(BTN_EXTRA, input_dev->keybit); 	if (model_info->features & PS2PP_TASK_BTN)		__set_bit(BTN_TASK, input_dev->keybit); 	if (model_info->features & PS2PP_NAV_BTN) {		__set_bit(BTN_FORWARD, input_dev->keybit);		__set_bit(BTN_BACK, input_dev->keybit);	} 	if (model_info->features & PS2PP_WHEEL)		__set_bit(REL_WHEEL, input_dev->relbit); 	if (model_info->features & PS2PP_HWHEEL)		__set_bit(REL_HWHEEL, input_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; 	case PS2PP_KIND_TRACKMAN:		psmouse->name = "TrackMan";		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_detect(struct psmouse *psmouse, bool set_properties){	struct ps2dev *ps2dev = &psmouse->ps2dev;	unsigned char param[4];	unsigned char model, buttons;	const struct ps2pp_info *model_info;	bool use_ps2pp = false;	int error; 	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); 	model = ((param[0] >> 4) & 0x07) | ((param[0] << 3) & 0x78);	buttons = param[1]; 	if (!model || !buttons)		return -1; 	model_info = get_model_info(model);	if (model_info) { /* * Do Logitech PS2++ / PS2T++ magic init. */		if (model_info->kind == PS2PP_KIND_TP3) { /* 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 = true;			} 		} 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, false);				use_ps2pp = true;			}		} 	} else {		psmouse_warn(psmouse, "Detected unknown Logitech mouse model %d\n", model);	} 	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; 				error = device_create_file(&ps2dev->serio->dev,							   &psmouse_attr_smartscroll.dattr);				if (error) {					psmouse_err(psmouse,						    "failed to create smartscroll sysfs attribute, error: %d\n",						    error);					return -1;				}			}		} 		if (buttons >= 3)			__set_bit(BTN_MIDDLE, psmouse->dev->keybit); 		if (model_info)			ps2pp_set_model_properties(psmouse, model_info, use_ps2pp);	} 	return use_ps2pp ? 0 : -1;}