alps.c 81.1 KB
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/*
 * ALPS touchpad PS/2 mouse driver
 *
 * Copyright (c) 2003 Neil Brown <neilb@cse.unsw.edu.au>
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 * Copyright (c) 2003-2005 Peter Osterlund <petero2@telia.com>
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 * Copyright (c) 2004 Dmitry Torokhov <dtor@mail.ru>
 * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
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 * Copyright (c) 2009 Sebastian Kapfer <sebastian_kapfer@gmx.net>
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 *
 * ALPS detection, tap switching and status querying info is taken from
 * tpconfig utility (by C. Scott Ananian and Bruce Kall).
 *
 * 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.
 */

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#include <linux/slab.h>
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#include <linux/input.h>
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#include <linux/input/mt.h>
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#include <linux/serio.h>
#include <linux/libps2.h>
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#include <linux/dmi.h>
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#include "psmouse.h"
#include "alps.h"

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/*
 * Definitions for ALPS version 3 and 4 command mode protocol
 */
#define ALPS_CMD_NIBBLE_10	0x01f2

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#define ALPS_REG_BASE_RUSHMORE	0xc2c0
#define ALPS_REG_BASE_PINNACLE	0x0000

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static const struct alps_nibble_commands alps_v3_nibble_commands[] = {
	{ PSMOUSE_CMD_SETPOLL,		0x00 }, /* 0 */
	{ PSMOUSE_CMD_RESET_DIS,	0x00 }, /* 1 */
	{ PSMOUSE_CMD_SETSCALE21,	0x00 }, /* 2 */
	{ PSMOUSE_CMD_SETRATE,		0x0a }, /* 3 */
	{ PSMOUSE_CMD_SETRATE,		0x14 }, /* 4 */
	{ PSMOUSE_CMD_SETRATE,		0x28 }, /* 5 */
	{ PSMOUSE_CMD_SETRATE,		0x3c }, /* 6 */
	{ PSMOUSE_CMD_SETRATE,		0x50 }, /* 7 */
	{ PSMOUSE_CMD_SETRATE,		0x64 }, /* 8 */
	{ PSMOUSE_CMD_SETRATE,		0xc8 }, /* 9 */
	{ ALPS_CMD_NIBBLE_10,		0x00 }, /* a */
	{ PSMOUSE_CMD_SETRES,		0x00 }, /* b */
	{ PSMOUSE_CMD_SETRES,		0x01 }, /* c */
	{ PSMOUSE_CMD_SETRES,		0x02 }, /* d */
	{ PSMOUSE_CMD_SETRES,		0x03 }, /* e */
	{ PSMOUSE_CMD_SETSCALE11,	0x00 }, /* f */
};

static const struct alps_nibble_commands alps_v4_nibble_commands[] = {
	{ PSMOUSE_CMD_ENABLE,		0x00 }, /* 0 */
	{ PSMOUSE_CMD_RESET_DIS,	0x00 }, /* 1 */
	{ PSMOUSE_CMD_SETSCALE21,	0x00 }, /* 2 */
	{ PSMOUSE_CMD_SETRATE,		0x0a }, /* 3 */
	{ PSMOUSE_CMD_SETRATE,		0x14 }, /* 4 */
	{ PSMOUSE_CMD_SETRATE,		0x28 }, /* 5 */
	{ PSMOUSE_CMD_SETRATE,		0x3c }, /* 6 */
	{ PSMOUSE_CMD_SETRATE,		0x50 }, /* 7 */
	{ PSMOUSE_CMD_SETRATE,		0x64 }, /* 8 */
	{ PSMOUSE_CMD_SETRATE,		0xc8 }, /* 9 */
	{ ALPS_CMD_NIBBLE_10,		0x00 }, /* a */
	{ PSMOUSE_CMD_SETRES,		0x00 }, /* b */
	{ PSMOUSE_CMD_SETRES,		0x01 }, /* c */
	{ PSMOUSE_CMD_SETRES,		0x02 }, /* d */
	{ PSMOUSE_CMD_SETRES,		0x03 }, /* e */
	{ PSMOUSE_CMD_SETSCALE11,	0x00 }, /* f */
};

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static const struct alps_nibble_commands alps_v6_nibble_commands[] = {
	{ PSMOUSE_CMD_ENABLE,		0x00 }, /* 0 */
	{ PSMOUSE_CMD_SETRATE,		0x0a }, /* 1 */
	{ PSMOUSE_CMD_SETRATE,		0x14 }, /* 2 */
	{ PSMOUSE_CMD_SETRATE,		0x28 }, /* 3 */
	{ PSMOUSE_CMD_SETRATE,		0x3c }, /* 4 */
	{ PSMOUSE_CMD_SETRATE,		0x50 }, /* 5 */
	{ PSMOUSE_CMD_SETRATE,		0x64 }, /* 6 */
	{ PSMOUSE_CMD_SETRATE,		0xc8 }, /* 7 */
	{ PSMOUSE_CMD_GETID,		0x00 }, /* 8 */
	{ PSMOUSE_CMD_GETINFO,		0x00 }, /* 9 */
	{ PSMOUSE_CMD_SETRES,		0x00 }, /* a */
	{ PSMOUSE_CMD_SETRES,		0x01 }, /* b */
	{ PSMOUSE_CMD_SETRES,		0x02 }, /* c */
	{ PSMOUSE_CMD_SETRES,		0x03 }, /* d */
	{ PSMOUSE_CMD_SETSCALE21,	0x00 }, /* e */
	{ PSMOUSE_CMD_SETSCALE11,	0x00 }, /* f */
};

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#define ALPS_DUALPOINT		0x02	/* touchpad has trackstick */
#define ALPS_PASS		0x04	/* device has a pass-through port */

#define ALPS_WHEEL		0x08	/* hardware wheel present */
#define ALPS_FW_BK_1		0x10	/* front & back buttons present */
#define ALPS_FW_BK_2		0x20	/* front & back buttons present */
#define ALPS_FOUR_BUTTONS	0x40	/* 4 direction button present */
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#define ALPS_PS2_INTERLEAVED	0x80	/* 3-byte PS/2 packet interleaved with
					   6-byte ALPS packet */
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#define ALPS_DELL		0x100	/* device is a Dell laptop */
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#define ALPS_BUTTONPAD		0x200	/* device is a clickpad */
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static const struct alps_model_info alps_model_data[] = {
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	{ { 0x32, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } },	/* Toshiba Salellite Pro M10 */
	{ { 0x33, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V1, 0x88, 0xf8, 0 } },				/* UMAX-530T */
	{ { 0x53, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
	{ { 0x53, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
	{ { 0x60, 0x03, 0xc8 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },				/* HP ze1115 */
	{ { 0x63, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
	{ { 0x63, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
	{ { 0x63, 0x02, 0x28 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } },		/* Fujitsu Siemens S6010 */
	{ { 0x63, 0x02, 0x3c }, 0x00, { ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL } },		/* Toshiba Satellite S2400-103 */
	{ { 0x63, 0x02, 0x50 }, 0x00, { ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 } },		/* NEC Versa L320 */
	{ { 0x63, 0x02, 0x64 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
	{ { 0x63, 0x03, 0xc8 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } },	/* Dell Latitude D800 */
	{ { 0x73, 0x00, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT } },		/* ThinkPad R61 8918-5QG */
	{ { 0x73, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
	{ { 0x73, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } },		/* Ahtec Laptop */
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	/*
	 * XXX This entry is suspicious. First byte has zero lower nibble,
	 * which is what a normal mouse would report. Also, the value 0x0e
	 * isn't valid per PS/2 spec.
	 */
	{ { 0x20, 0x02, 0x0e }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } },

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	{ { 0x22, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } },
	{ { 0x22, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT } },	/* Dell Latitude D600 */
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	/* Dell Latitude E5500, E6400, E6500, Precision M4400 */
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	{ { 0x62, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xcf, 0xcf,
		ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } },
	{ { 0x73, 0x00, 0x14 }, 0x00, { ALPS_PROTO_V6, 0xff, 0xff, ALPS_DUALPOINT } },		/* Dell XT2 */
	{ { 0x73, 0x02, 0x50 }, 0x00, { ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS } },	/* Dell Vostro 1400 */
	{ { 0x52, 0x01, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff,
		ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } },				/* Toshiba Tecra A11-11L */
	{ { 0x73, 0x02, 0x64 }, 0x8a, { ALPS_PROTO_V4, 0x8f, 0x8f, 0 } },
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};

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static const struct alps_protocol_info alps_v3_protocol_data = {
	ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT
};

static const struct alps_protocol_info alps_v3_rushmore_data = {
	ALPS_PROTO_V3_RUSHMORE, 0x8f, 0x8f, ALPS_DUALPOINT
};

static const struct alps_protocol_info alps_v5_protocol_data = {
	ALPS_PROTO_V5, 0xc8, 0xd8, 0
};

static const struct alps_protocol_info alps_v7_protocol_data = {
	ALPS_PROTO_V7, 0x48, 0x48, ALPS_DUALPOINT
};

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static const struct alps_protocol_info alps_v8_protocol_data = {
	ALPS_PROTO_V8, 0x18, 0x18, 0
};

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static void alps_set_abs_params_st(struct alps_data *priv,
				   struct input_dev *dev1);
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static void alps_set_abs_params_semi_mt(struct alps_data *priv,
					struct input_dev *dev1);
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static void alps_set_abs_params_v7(struct alps_data *priv,
				   struct input_dev *dev1);
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static void alps_set_abs_params_ss4_v2(struct alps_data *priv,
				       struct input_dev *dev1);
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/* Packet formats are described in Documentation/input/alps.txt */
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static bool alps_is_valid_first_byte(struct alps_data *priv,
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				     unsigned char data)
{
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	return (data & priv->mask0) == priv->byte0;
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}

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static void alps_report_buttons(struct input_dev *dev1, struct input_dev *dev2,
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				int left, int right, int middle)
{
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	struct input_dev *dev;

	/*
	 * If shared button has already been reported on the
	 * other device (dev2) then this event should be also
	 * sent through that device.
	 */
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	dev = (dev2 && test_bit(BTN_LEFT, dev2->key)) ? dev2 : dev1;
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	input_report_key(dev, BTN_LEFT, left);

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	dev = (dev2 && test_bit(BTN_RIGHT, dev2->key)) ? dev2 : dev1;
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	input_report_key(dev, BTN_RIGHT, right);

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	dev = (dev2 && test_bit(BTN_MIDDLE, dev2->key)) ? dev2 : dev1;
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	input_report_key(dev, BTN_MIDDLE, middle);

	/*
	 * Sync the _other_ device now, we'll do the first
	 * device later once we report the rest of the events.
	 */
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	if (dev2)
		input_sync(dev2);
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}

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static void alps_process_packet_v1_v2(struct psmouse *psmouse)
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{
	struct alps_data *priv = psmouse->private;
	unsigned char *packet = psmouse->packet;
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	struct input_dev *dev = psmouse->dev;
	struct input_dev *dev2 = priv->dev2;
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	int x, y, z, ges, fin, left, right, middle;
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	int back = 0, forward = 0;
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	if (priv->proto_version == ALPS_PROTO_V1) {
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		left = packet[2] & 0x10;
		right = packet[2] & 0x08;
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		middle = 0;
		x = packet[1] | ((packet[0] & 0x07) << 7);
		y = packet[4] | ((packet[3] & 0x07) << 7);
		z = packet[5];
	} else {
		left = packet[3] & 1;
		right = packet[3] & 2;
		middle = packet[3] & 4;
		x = packet[1] | ((packet[2] & 0x78) << (7 - 3));
		y = packet[4] | ((packet[3] & 0x70) << (7 - 4));
		z = packet[5];
	}

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	if (priv->flags & ALPS_FW_BK_1) {
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		back = packet[0] & 0x10;
		forward = packet[2] & 4;
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	}

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	if (priv->flags & ALPS_FW_BK_2) {
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		back = packet[3] & 4;
		forward = packet[2] & 4;
		if ((middle = forward && back))
			forward = back = 0;
	}

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	ges = packet[2] & 1;
	fin = packet[2] & 2;

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	if ((priv->flags & ALPS_DUALPOINT) && z == 127) {
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		input_report_rel(dev2, REL_X,  (x > 383 ? (x - 768) : x));
		input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y));
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		alps_report_buttons(dev2, dev, left, right, middle);
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		input_sync(dev2);
		return;
	}

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	/* Dell non interleaved V2 dualpoint has separate stick button bits */
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	if (priv->proto_version == ALPS_PROTO_V2 &&
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	    priv->flags == (ALPS_DELL | ALPS_PASS | ALPS_DUALPOINT)) {
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		left |= packet[0] & 1;
		right |= packet[0] & 2;
		middle |= packet[0] & 4;
	}

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	alps_report_buttons(dev, dev2, left, right, middle);
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	/* Convert hardware tap to a reasonable Z value */
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	if (ges && !fin)
		z = 40;
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	/*
	 * A "tap and drag" operation is reported by the hardware as a transition
	 * from (!fin && ges) to (fin && ges). This should be translated to the
	 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually.
	 */
	if (ges && fin && !priv->prev_fin) {
		input_report_abs(dev, ABS_X, x);
		input_report_abs(dev, ABS_Y, y);
		input_report_abs(dev, ABS_PRESSURE, 0);
		input_report_key(dev, BTN_TOOL_FINGER, 0);
		input_sync(dev);
	}
	priv->prev_fin = fin;

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	if (z > 30)
		input_report_key(dev, BTN_TOUCH, 1);
	if (z < 25)
		input_report_key(dev, BTN_TOUCH, 0);
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	if (z > 0) {
		input_report_abs(dev, ABS_X, x);
		input_report_abs(dev, ABS_Y, y);
	}

	input_report_abs(dev, ABS_PRESSURE, z);
	input_report_key(dev, BTN_TOOL_FINGER, z > 0);

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	if (priv->flags & ALPS_WHEEL)
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		input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07));
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	if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
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		input_report_key(dev, BTN_FORWARD, forward);
		input_report_key(dev, BTN_BACK, back);
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	}

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	if (priv->flags & ALPS_FOUR_BUTTONS) {
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		input_report_key(dev, BTN_0, packet[2] & 4);
		input_report_key(dev, BTN_1, packet[0] & 0x10);
		input_report_key(dev, BTN_2, packet[3] & 4);
		input_report_key(dev, BTN_3, packet[0] & 0x20);
	}

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	input_sync(dev);
}

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static void alps_get_bitmap_points(unsigned int map,
				   struct alps_bitmap_point *low,
				   struct alps_bitmap_point *high,
				   int *fingers)
{
	struct alps_bitmap_point *point;
	int i, bit, prev_bit = 0;

	point = low;
	for (i = 0; map != 0; i++, map >>= 1) {
		bit = map & 1;
		if (bit) {
			if (!prev_bit) {
				point->start_bit = i;
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				point->num_bits = 0;
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				(*fingers)++;
			}
			point->num_bits++;
		} else {
			if (prev_bit)
				point = high;
		}
		prev_bit = bit;
	}
}

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/*
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 * Process bitmap data from semi-mt protocols. Returns the number of
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 * fingers detected. A return value of 0 means at least one of the
 * bitmaps was empty.
 *
 * The bitmaps don't have enough data to track fingers, so this function
 * only generates points representing a bounding box of all contacts.
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 * These points are returned in fields->mt when the return value
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 * is greater than 0.
 */
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static int alps_process_bitmap(struct alps_data *priv,
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			       struct alps_fields *fields)
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{
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	int i, fingers_x = 0, fingers_y = 0, fingers, closest;
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	struct alps_bitmap_point x_low = {0,}, x_high = {0,};
	struct alps_bitmap_point y_low = {0,}, y_high = {0,};
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	struct input_mt_pos corner[4];
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	if (!fields->x_map || !fields->y_map)
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		return 0;

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	alps_get_bitmap_points(fields->x_map, &x_low, &x_high, &fingers_x);
	alps_get_bitmap_points(fields->y_map, &y_low, &y_high, &fingers_y);
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	/*
	 * Fingers can overlap, so we use the maximum count of fingers
	 * on either axis as the finger count.
	 */
	fingers = max(fingers_x, fingers_y);

	/*
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	 * If an axis reports only a single contact, we have overlapping or
	 * adjacent fingers. Divide the single contact between the two points.
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	 */
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	if (fingers_x == 1) {
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		i = (x_low.num_bits - 1) / 2;
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		x_low.num_bits = x_low.num_bits - i;
		x_high.start_bit = x_low.start_bit + i;
		x_high.num_bits = max(i, 1);
	}
	if (fingers_y == 1) {
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		i = (y_low.num_bits - 1) / 2;
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		y_low.num_bits = y_low.num_bits - i;
		y_high.start_bit = y_low.start_bit + i;
		y_high.num_bits = max(i, 1);
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	}

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	/* top-left corner */
	corner[0].x =
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		(priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) /
		(2 * (priv->x_bits - 1));
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	corner[0].y =
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		(priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) /
		(2 * (priv->y_bits - 1));
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	/* top-right corner */
	corner[1].x =
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		(priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) /
		(2 * (priv->x_bits - 1));
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	corner[1].y =
		(priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) /
		(2 * (priv->y_bits - 1));

	/* bottom-right corner */
	corner[2].x =
		(priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) /
		(2 * (priv->x_bits - 1));
	corner[2].y =
		(priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) /
		(2 * (priv->y_bits - 1));

	/* bottom-left corner */
	corner[3].x =
		(priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) /
		(2 * (priv->x_bits - 1));
	corner[3].y =
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		(priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) /
		(2 * (priv->y_bits - 1));
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	/* x-bitmap order is reversed on v5 touchpads  */
	if (priv->proto_version == ALPS_PROTO_V5) {
		for (i = 0; i < 4; i++)
			corner[i].x = priv->x_max - corner[i].x;
	}

	/* y-bitmap order is reversed on v3 and v4 touchpads  */
	if (priv->proto_version == ALPS_PROTO_V3 ||
	    priv->proto_version == ALPS_PROTO_V4) {
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		for (i = 0; i < 4; i++)
			corner[i].y = priv->y_max - corner[i].y;
	}

	/*
	 * We only select a corner for the second touch once per 2 finger
	 * touch sequence to avoid the chosen corner (and thus the coordinates)
	 * jumping around when the first touch is in the middle.
	 */
	if (priv->second_touch == -1) {
		/* Find corner closest to our st coordinates */
		closest = 0x7fffffff;
		for (i = 0; i < 4; i++) {
			int dx = fields->st.x - corner[i].x;
			int dy = fields->st.y - corner[i].y;
			int distance = dx * dx + dy * dy;

			if (distance < closest) {
				priv->second_touch = i;
				closest = distance;
			}
		}
		/* And select the opposite corner to use for the 2nd touch */
		priv->second_touch = (priv->second_touch + 2) % 4;
453 454
	}

455 456 457
	fields->mt[0] = fields->st;
	fields->mt[1] = corner[priv->second_touch];

458 459 460
	return fingers;
}

461
static void alps_set_slot(struct input_dev *dev, int slot, int x, int y)
462 463
{
	input_mt_slot(dev, slot);
464 465 466
	input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
	input_report_abs(dev, ABS_MT_POSITION_X, x);
	input_report_abs(dev, ABS_MT_POSITION_Y, y);
467 468
}

469
static void alps_report_mt_data(struct psmouse *psmouse, int n)
470
{
471 472 473
	struct alps_data *priv = psmouse->private;
	struct input_dev *dev = psmouse->dev;
	struct alps_fields *f = &priv->f;
474 475
	int i, slot[MAX_TOUCHES];

476
	input_mt_assign_slots(dev, slot, f->mt, n, 0);
477 478
	for (i = 0; i < n; i++)
		alps_set_slot(dev, slot[i], f->mt[i].x, f->mt[i].y);
479

480
	input_mt_sync_frame(dev);
481 482
}

483 484 485 486 487 488 489 490 491 492 493
static void alps_report_semi_mt_data(struct psmouse *psmouse, int fingers)
{
	struct alps_data *priv = psmouse->private;
	struct input_dev *dev = psmouse->dev;
	struct alps_fields *f = &priv->f;

	/* Use st data when we don't have mt data */
	if (fingers < 2) {
		f->mt[0].x = f->st.x;
		f->mt[0].y = f->st.y;
		fingers = f->pressure > 0 ? 1 : 0;
494
		priv->second_touch = -1;
495 496
	}

497 498 499 500 501
	if (fingers >= 1)
		alps_set_slot(dev, 0, f->mt[0].x, f->mt[0].y);
	if (fingers >= 2)
		alps_set_slot(dev, 1, f->mt[1].x, f->mt[1].y);
	input_mt_sync_frame(dev);
502 503 504 505 506 507 508 509 510 511 512 513

	input_mt_report_finger_count(dev, fingers);

	input_report_key(dev, BTN_LEFT, f->left);
	input_report_key(dev, BTN_RIGHT, f->right);
	input_report_key(dev, BTN_MIDDLE, f->middle);

	input_report_abs(dev, ABS_PRESSURE, f->pressure);

	input_sync(dev);
}

514 515 516 517 518 519 520
static void alps_process_trackstick_packet_v3(struct psmouse *psmouse)
{
	struct alps_data *priv = psmouse->private;
	unsigned char *packet = psmouse->packet;
	struct input_dev *dev = priv->dev2;
	int x, y, z, left, right, middle;

521 522 523 524 525 526 527
	/* It should be a DualPoint when received trackstick packet */
	if (!(priv->flags & ALPS_DUALPOINT)) {
		psmouse_warn(psmouse,
			     "Rejected trackstick packet from non DualPoint device");
		return;
	}

528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580
	/* Sanity check packet */
	if (!(packet[0] & 0x40)) {
		psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n");
		return;
	}

	/*
	 * There's a special packet that seems to indicate the end
	 * of a stream of trackstick data. Filter these out.
	 */
	if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f)
		return;

	x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f));
	y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f));
	z = (packet[4] & 0x7c) >> 2;

	/*
	 * The x and y values tend to be quite large, and when used
	 * alone the trackstick is difficult to use. Scale them down
	 * to compensate.
	 */
	x /= 8;
	y /= 8;

	input_report_rel(dev, REL_X, x);
	input_report_rel(dev, REL_Y, -y);

	/*
	 * Most ALPS models report the trackstick buttons in the touchpad
	 * packets, but a few report them here. No reliable way has been
	 * found to differentiate between the models upfront, so we enable
	 * the quirk in response to seeing a button press in the trackstick
	 * packet.
	 */
	left = packet[3] & 0x01;
	right = packet[3] & 0x02;
	middle = packet[3] & 0x04;

	if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) &&
	    (left || right || middle))
		priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS;

	if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) {
		input_report_key(dev, BTN_LEFT, left);
		input_report_key(dev, BTN_RIGHT, right);
		input_report_key(dev, BTN_MIDDLE, middle);
	}

	input_sync(dev);
	return;
}

581 582 583 584 585 586 587 588 589 590 591
static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p)
{
	f->left = !!(p[3] & 0x01);
	f->right = !!(p[3] & 0x02);
	f->middle = !!(p[3] & 0x04);

	f->ts_left = !!(p[3] & 0x10);
	f->ts_right = !!(p[3] & 0x20);
	f->ts_middle = !!(p[3] & 0x40);
}

592
static int alps_decode_pinnacle(struct alps_fields *f, unsigned char *p,
593
				 struct psmouse *psmouse)
594 595 596 597
{
	f->first_mp = !!(p[4] & 0x40);
	f->is_mp = !!(p[0] & 0x40);

598 599 600 601 602 603 604 605 606 607 608 609 610
	if (f->is_mp) {
		f->fingers = (p[5] & 0x3) + 1;
		f->x_map = ((p[4] & 0x7e) << 8) |
			   ((p[1] & 0x7f) << 2) |
			   ((p[0] & 0x30) >> 4);
		f->y_map = ((p[3] & 0x70) << 4) |
			   ((p[2] & 0x7f) << 1) |
			   (p[4] & 0x01);
	} else {
		f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) |
		       ((p[0] & 0x30) >> 4);
		f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f);
		f->pressure = p[5] & 0x7f;
611

612 613
		alps_decode_buttons_v3(f, p);
	}
614 615

	return 0;
616 617
}

618
static int alps_decode_rushmore(struct alps_fields *f, unsigned char *p,
619
				 struct psmouse *psmouse)
620
{
621
	f->first_mp = !!(p[4] & 0x40);
622
	f->is_mp = !!(p[5] & 0x40);
623

624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641
	if (f->is_mp) {
		f->fingers = max((p[5] & 0x3), ((p[5] >> 2) & 0x3)) + 1;
		f->x_map = ((p[5] & 0x10) << 11) |
			   ((p[4] & 0x7e) << 8) |
			   ((p[1] & 0x7f) << 2) |
			   ((p[0] & 0x30) >> 4);
		f->y_map = ((p[5] & 0x20) << 6) |
			   ((p[3] & 0x70) << 4) |
			   ((p[2] & 0x7f) << 1) |
			   (p[4] & 0x01);
	} else {
		f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) |
		       ((p[0] & 0x30) >> 4);
		f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f);
		f->pressure = p[5] & 0x7f;

		alps_decode_buttons_v3(f, p);
	}
642 643

	return 0;
644 645
}

646
static int alps_decode_dolphin(struct alps_fields *f, unsigned char *p,
647
				struct psmouse *psmouse)
648
{
649 650 651
	u64 palm_data = 0;
	struct alps_data *priv = psmouse->private;

652 653 654
	f->first_mp = !!(p[0] & 0x02);
	f->is_mp = !!(p[0] & 0x20);

655
	if (!f->is_mp) {
656 657 658
		f->st.x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7));
		f->st.y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3));
		f->pressure = (p[0] & 4) ? 0 : p[5] & 0x7f;
659 660 661
		alps_decode_buttons_v3(f, p);
	} else {
		f->fingers = ((p[0] & 0x6) >> 1 |
662 663
		     (p[0] & 0x10) >> 2);

664 665 666 667 668 669 670 671 672 673 674 675 676 677 678
		palm_data = (p[1] & 0x7f) |
			    ((p[2] & 0x7f) << 7) |
			    ((p[4] & 0x7f) << 14) |
			    ((p[5] & 0x7f) << 21) |
			    ((p[3] & 0x07) << 28) |
			    (((u64)p[3] & 0x70) << 27) |
			    (((u64)p[0] & 0x01) << 34);

		/* Y-profile is stored in P(0) to p(n-1), n = y_bits; */
		f->y_map = palm_data & (BIT(priv->y_bits) - 1);

		/* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */
		f->x_map = (palm_data >> priv->y_bits) &
			   (BIT(priv->x_bits) - 1);
	}
679 680

	return 0;
681 682
}

683
static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse)
684 685 686 687
{
	struct alps_data *priv = psmouse->private;
	unsigned char *packet = psmouse->packet;
	struct input_dev *dev2 = priv->dev2;
688 689 690 691
	struct alps_fields *f = &priv->f;
	int fingers = 0;

	memset(f, 0, sizeof(*f));
692

693
	priv->decode_fields(f, packet, psmouse);
694 695

	/*
696 697 698 699
	 * There's no single feature of touchpad position and bitmap packets
	 * that can be used to distinguish between them. We rely on the fact
	 * that a bitmap packet should always follow a position packet with
	 * bit 6 of packet[4] set.
700 701 702 703 704 705 706 707
	 */
	if (priv->multi_packet) {
		/*
		 * Sometimes a position packet will indicate a multi-packet
		 * sequence, but then what follows is another position
		 * packet. Check for this, and when it happens process the
		 * position packet as usual.
		 */
708 709
		if (f->is_mp) {
			fingers = f->fingers;
710 711 712 713 714
			/*
			 * Bitmap processing uses position packet's coordinate
			 * data, so we need to do decode it first.
			 */
			priv->decode_fields(f, priv->multi_data, psmouse);
715 716
			if (alps_process_bitmap(priv, f) == 0)
				fingers = 0; /* Use st data */
717 718
		} else {
			priv->multi_packet = 0;
719 720 721
		}
	}

722 723 724 725 726 727 728 729
	/*
	 * Bit 6 of byte 0 is not usually set in position packets. The only
	 * times it seems to be set is in situations where the data is
	 * suspect anyway, e.g. a palm resting flat on the touchpad. Given
	 * this combined with the fact that this bit is useful for filtering
	 * out misidentified bitmap packets, we reject anything with this
	 * bit set.
	 */
730
	if (f->is_mp)
731 732
		return;

733
	if (!priv->multi_packet && f->first_mp) {
734
		priv->multi_packet = 1;
735 736 737 738 739
		memcpy(priv->multi_data, packet, sizeof(priv->multi_data));
		return;
	}

	priv->multi_packet = 0;
740 741 742 743 744 745 746

	/*
	 * Sometimes the hardware sends a single packet with z = 0
	 * in the middle of a stream. Real releases generate packets
	 * with x, y, and z all zero, so these seem to be flukes.
	 * Ignore them.
	 */
747
	if (f->st.x && f->st.y && !f->pressure)
748 749
		return;

750
	alps_report_semi_mt_data(psmouse, fingers);
751

752 753
	if ((priv->flags & ALPS_DUALPOINT) &&
	    !(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) {
754 755 756
		input_report_key(dev2, BTN_LEFT, f->ts_left);
		input_report_key(dev2, BTN_RIGHT, f->ts_right);
		input_report_key(dev2, BTN_MIDDLE, f->ts_middle);
757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777
		input_sync(dev2);
	}
}

static void alps_process_packet_v3(struct psmouse *psmouse)
{
	unsigned char *packet = psmouse->packet;

	/*
	 * v3 protocol packets come in three types, two representing
	 * touchpad data and one representing trackstick data.
	 * Trackstick packets seem to be distinguished by always
	 * having 0x3f in the last byte. This value has never been
	 * observed in the last byte of either of the other types
	 * of packets.
	 */
	if (packet[5] == 0x3f) {
		alps_process_trackstick_packet_v3(psmouse);
		return;
	}

778
	alps_process_touchpad_packet_v3_v5(psmouse);
779 780
}

781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796
static void alps_process_packet_v6(struct psmouse *psmouse)
{
	struct alps_data *priv = psmouse->private;
	unsigned char *packet = psmouse->packet;
	struct input_dev *dev = psmouse->dev;
	struct input_dev *dev2 = priv->dev2;
	int x, y, z, left, right, middle;

	/*
	 * We can use Byte5 to distinguish if the packet is from Touchpad
	 * or Trackpoint.
	 * Touchpad:	0 - 0x7E
	 * Trackpoint:	0x7F
	 */
	if (packet[5] == 0x7F) {
		/* It should be a DualPoint when received Trackpoint packet */
797 798 799
		if (!(priv->flags & ALPS_DUALPOINT)) {
			psmouse_warn(psmouse,
				     "Rejected trackstick packet from non DualPoint device");
800
			return;
801
		}
802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853

		/* Trackpoint packet */
		x = packet[1] | ((packet[3] & 0x20) << 2);
		y = packet[2] | ((packet[3] & 0x40) << 1);
		z = packet[4];
		left = packet[3] & 0x01;
		right = packet[3] & 0x02;
		middle = packet[3] & 0x04;

		/* To prevent the cursor jump when finger lifted */
		if (x == 0x7F && y == 0x7F && z == 0x7F)
			x = y = z = 0;

		/* Divide 4 since trackpoint's speed is too fast */
		input_report_rel(dev2, REL_X, (char)x / 4);
		input_report_rel(dev2, REL_Y, -((char)y / 4));

		input_report_key(dev2, BTN_LEFT, left);
		input_report_key(dev2, BTN_RIGHT, right);
		input_report_key(dev2, BTN_MIDDLE, middle);

		input_sync(dev2);
		return;
	}

	/* Touchpad packet */
	x = packet[1] | ((packet[3] & 0x78) << 4);
	y = packet[2] | ((packet[4] & 0x78) << 4);
	z = packet[5];
	left = packet[3] & 0x01;
	right = packet[3] & 0x02;

	if (z > 30)
		input_report_key(dev, BTN_TOUCH, 1);
	if (z < 25)
		input_report_key(dev, BTN_TOUCH, 0);

	if (z > 0) {
		input_report_abs(dev, ABS_X, x);
		input_report_abs(dev, ABS_Y, y);
	}

	input_report_abs(dev, ABS_PRESSURE, z);
	input_report_key(dev, BTN_TOOL_FINGER, z > 0);

	/* v6 touchpad does not have middle button */
	input_report_key(dev, BTN_LEFT, left);
	input_report_key(dev, BTN_RIGHT, right);

	input_sync(dev);
}

854 855
static void alps_process_packet_v4(struct psmouse *psmouse)
{
856
	struct alps_data *priv = psmouse->private;
857
	unsigned char *packet = psmouse->packet;
858
	struct alps_fields *f = &priv->f;
859
	int offset;
860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877

	/*
	 * v4 has a 6-byte encoding for bitmap data, but this data is
	 * broken up between 3 normal packets. Use priv->multi_packet to
	 * track our position in the bitmap packet.
	 */
	if (packet[6] & 0x40) {
		/* sync, reset position */
		priv->multi_packet = 0;
	}

	if (WARN_ON_ONCE(priv->multi_packet > 2))
		return;

	offset = 2 * priv->multi_packet;
	priv->multi_data[offset] = packet[6];
	priv->multi_data[offset + 1] = packet[7];

878 879 880 881 882 883 884 885
	f->left = !!(packet[4] & 0x01);
	f->right = !!(packet[4] & 0x02);

	f->st.x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) |
		  ((packet[0] & 0x30) >> 4);
	f->st.y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f);
	f->pressure = packet[5] & 0x7f;

886 887 888
	if (++priv->multi_packet > 2) {
		priv->multi_packet = 0;

889
		f->x_map = ((priv->multi_data[2] & 0x1f) << 10) |
890 891 892
			   ((priv->multi_data[3] & 0x60) << 3) |
			   ((priv->multi_data[0] & 0x3f) << 2) |
			   ((priv->multi_data[1] & 0x60) >> 5);
893
		f->y_map = ((priv->multi_data[5] & 0x01) << 10) |
894 895 896
			   ((priv->multi_data[3] & 0x1f) << 5) |
			    (priv->multi_data[1] & 0x1f);

897
		f->fingers = alps_process_bitmap(priv, f);
898
	}
899

900
	alps_report_semi_mt_data(psmouse, f->fingers);
901 902
}

903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953
static bool alps_is_valid_package_v7(struct psmouse *psmouse)
{
	switch (psmouse->pktcnt) {
	case 3:
		return (psmouse->packet[2] & 0x40) == 0x40;
	case 4:
		return (psmouse->packet[3] & 0x48) == 0x48;
	case 6:
		return (psmouse->packet[5] & 0x40) == 0x00;
	}
	return true;
}

static unsigned char alps_get_packet_id_v7(char *byte)
{
	unsigned char packet_id;

	if (byte[4] & 0x40)
		packet_id = V7_PACKET_ID_TWO;
	else if (byte[4] & 0x01)
		packet_id = V7_PACKET_ID_MULTI;
	else if ((byte[0] & 0x10) && !(byte[4] & 0x43))
		packet_id = V7_PACKET_ID_NEW;
	else if (byte[1] == 0x00 && byte[4] == 0x00)
		packet_id = V7_PACKET_ID_IDLE;
	else
		packet_id = V7_PACKET_ID_UNKNOWN;

	return packet_id;
}

static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt,
					  unsigned char *pkt,
					  unsigned char pkt_id)
{
	mt[0].x = ((pkt[2] & 0x80) << 4);
	mt[0].x |= ((pkt[2] & 0x3F) << 5);
	mt[0].x |= ((pkt[3] & 0x30) >> 1);
	mt[0].x |= (pkt[3] & 0x07);
	mt[0].y = (pkt[1] << 3) | (pkt[0] & 0x07);

	mt[1].x = ((pkt[3] & 0x80) << 4);
	mt[1].x |= ((pkt[4] & 0x80) << 3);
	mt[1].x |= ((pkt[4] & 0x3F) << 4);
	mt[1].y = ((pkt[5] & 0x80) << 3);
	mt[1].y |= ((pkt[5] & 0x3F) << 4);

	switch (pkt_id) {
	case V7_PACKET_ID_TWO:
		mt[1].x &= ~0x000F;
		mt[1].y |= 0x000F;
954 955 956 957 958
		/* Detect false-postive touches where x & y report max value */
		if (mt[1].y == 0x7ff && mt[1].x == 0xff0) {
			mt[1].x = 0;
			/* y gets set to 0 at the end of this function */
		}
959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980
		break;

	case V7_PACKET_ID_MULTI:
		mt[1].x &= ~0x003F;
		mt[1].y &= ~0x0020;
		mt[1].y |= ((pkt[4] & 0x02) << 4);
		mt[1].y |= 0x001F;
		break;

	case V7_PACKET_ID_NEW:
		mt[1].x &= ~0x003F;
		mt[1].x |= (pkt[0] & 0x20);
		mt[1].y |= 0x000F;
		break;
	}

	mt[0].y = 0x7FF - mt[0].y;
	mt[1].y = 0x7FF - mt[1].y;
}

static int alps_get_mt_count(struct input_mt_pos *mt)
{
981
	int i, fingers = 0;
982

983 984 985 986
	for (i = 0; i < MAX_TOUCHES; i++) {
		if (mt[i].x != 0 || mt[i].y != 0)
			fingers++;
	}
987

988
	return fingers;
989 990 991 992 993 994
}

static int alps_decode_packet_v7(struct alps_fields *f,
				  unsigned char *p,
				  struct psmouse *psmouse)
{
995
	struct alps_data *priv = psmouse->private;
996 997 998 999 1000 1001 1002
	unsigned char pkt_id;

	pkt_id = alps_get_packet_id_v7(p);
	if (pkt_id == V7_PACKET_ID_IDLE)
		return 0;
	if (pkt_id == V7_PACKET_ID_UNKNOWN)
		return -1;
1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022
	/*
	 * NEW packets are send to indicate a discontinuity in the finger
	 * coordinate reporting. Specifically a finger may have moved from
	 * slot 0 to 1 or vice versa. INPUT_MT_TRACK takes care of this for
	 * us.
	 *
	 * NEW packets have 3 problems:
	 * 1) They do not contain middle / right button info (on non clickpads)
	 *    this can be worked around by preserving the old button state
	 * 2) They do not contain an accurate fingercount, and they are
	 *    typically send when the number of fingers changes. We cannot use
	 *    the old finger count as that may mismatch with the amount of
	 *    touch coordinates we've available in the NEW packet
	 * 3) Their x data for the second touch is inaccurate leading to
	 *    a possible jump of the x coordinate by 16 units when the first
	 *    non NEW packet comes in
	 * Since problems 2 & 3 cannot be worked around, just ignore them.
	 */
	if (pkt_id == V7_PACKET_ID_NEW)
		return 1;
1023 1024 1025 1026 1027

	alps_get_finger_coordinate_v7(f->mt, p, pkt_id);

	if (pkt_id == V7_PACKET_ID_TWO)
		f->fingers = alps_get_mt_count(f->mt);
1028
	else /* pkt_id == V7_PACKET_ID_MULTI */
1029 1030
		f->fingers = 3 + (p[5] & 0x03);

1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041
	f->left = (p[0] & 0x80) >> 7;
	if (priv->flags & ALPS_BUTTONPAD) {
		if (p[0] & 0x20)
			f->fingers++;
		if (p[0] & 0x10)
			f->fingers++;
	} else {
		f->right = (p[0] & 0x20) >> 5;
		f->middle = (p[0] & 0x10) >> 4;
	}

1042 1043 1044 1045 1046 1047 1048 1049
	/* Sometimes a single touch is reported in mt[1] rather then mt[0] */
	if (f->fingers == 1 && f->mt[0].x == 0 && f->mt[0].y == 0) {
		f->mt[0].x = f->mt[1].x;
		f->mt[0].y = f->mt[1].y;
		f->mt[1].x = 0;
		f->mt[1].y = 0;
	}

1050 1051 1052 1053 1054 1055 1056 1057 1058 1059
	return 0;
}

static void alps_process_trackstick_packet_v7(struct psmouse *psmouse)
{
	struct alps_data *priv = psmouse->private;
	unsigned char *packet = psmouse->packet;
	struct input_dev *dev2 = priv->dev2;
	int x, y, z, left, right, middle;

1060 1061 1062 1063 1064 1065 1066
	/* It should be a DualPoint when received trackstick packet */
	if (!(priv->flags & ALPS_DUALPOINT)) {
		psmouse_warn(psmouse,
			     "Rejected trackstick packet from non DualPoint device");
		return;
	}

1067 1068 1069 1070 1071 1072 1073 1074 1075
	x = ((packet[2] & 0xbf)) | ((packet[3] & 0x10) << 2);
	y = (packet[3] & 0x07) | (packet[4] & 0xb8) |
	    ((packet[3] & 0x20) << 1);
	z = (packet[5] & 0x3f) | ((packet[3] & 0x80) >> 1);

	left = (packet[1] & 0x01);
	right = (packet[1] & 0x02) >> 1;
	middle = (packet[1] & 0x04) >> 2;

1076 1077
	input_report_rel(dev2, REL_X, (char)x);
	input_report_rel(dev2, REL_Y, -((char)y));
1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117

	input_report_key(dev2, BTN_LEFT, left);
	input_report_key(dev2, BTN_RIGHT, right);
	input_report_key(dev2, BTN_MIDDLE, middle);

	input_sync(dev2);
}

static void alps_process_touchpad_packet_v7(struct psmouse *psmouse)
{
	struct alps_data *priv = psmouse->private;
	struct input_dev *dev = psmouse->dev;
	struct alps_fields *f = &priv->f;

	memset(f, 0, sizeof(*f));

	if (priv->decode_fields(f, psmouse->packet, psmouse))
		return;

	alps_report_mt_data(psmouse, alps_get_mt_count(f->mt));

	input_mt_report_finger_count(dev, f->fingers);

	input_report_key(dev, BTN_LEFT, f->left);
	input_report_key(dev, BTN_RIGHT, f->right);
	input_report_key(dev, BTN_MIDDLE, f->middle);

	input_sync(dev);
}

static void alps_process_packet_v7(struct psmouse *psmouse)
{
	unsigned char *packet = psmouse->packet;

	if (packet[0] == 0x48 && (packet[4] & 0x47) == 0x06)
		alps_process_trackstick_packet_v7(psmouse);
	else
		alps_process_touchpad_packet_v7(psmouse);
}

1118
static unsigned char alps_get_pkt_id_ss4_v2(unsigned char *byte)
1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287
{
	unsigned char pkt_id = SS4_PACKET_ID_IDLE;

	if (byte[0] == 0x18 && byte[1] == 0x10 && byte[2] == 0x00 &&
	    (byte[3] & 0x88) == 0x08 && byte[4] == 0x10 && byte[5] == 0x00) {
		pkt_id = SS4_PACKET_ID_IDLE;
	} else if (!(byte[3] & 0x10)) {
		pkt_id = SS4_PACKET_ID_ONE;
	} else if (!(byte[3] & 0x20)) {
		pkt_id = SS4_PACKET_ID_TWO;
	} else {
		pkt_id = SS4_PACKET_ID_MULTI;
	}

	return pkt_id;
}

static int alps_decode_ss4_v2(struct alps_fields *f,
			      unsigned char *p, struct psmouse *psmouse)
{
	struct alps_data *priv = psmouse->private;
	unsigned char pkt_id;
	unsigned int no_data_x, no_data_y;

	pkt_id = alps_get_pkt_id_ss4_v2(p);

	/* Current packet is 1Finger coordinate packet */
	switch (pkt_id) {
	case SS4_PACKET_ID_ONE:
		f->mt[0].x = SS4_1F_X_V2(p);
		f->mt[0].y = SS4_1F_Y_V2(p);
		f->pressure = ((SS4_1F_Z_V2(p)) * 2) & 0x7f;
		f->fingers = 1;
		f->first_mp = 0;
		f->is_mp = 0;
		break;

	case SS4_PACKET_ID_TWO:
		if (priv->flags & ALPS_BUTTONPAD) {
			f->mt[0].x = SS4_BTL_MF_X_V2(p, 0);
			f->mt[0].y = SS4_BTL_MF_Y_V2(p, 0);
			f->mt[1].x = SS4_BTL_MF_X_V2(p, 1);
			f->mt[1].y = SS4_BTL_MF_Y_V2(p, 1);
		} else {
			f->mt[0].x = SS4_STD_MF_X_V2(p, 0);
			f->mt[0].y = SS4_STD_MF_Y_V2(p, 0);
			f->mt[1].x = SS4_STD_MF_X_V2(p, 1);
			f->mt[1].y = SS4_STD_MF_Y_V2(p, 1);
		}
		f->pressure = SS4_MF_Z_V2(p, 0) ? 0x30 : 0;

		if (SS4_IS_MF_CONTINUE(p)) {
			f->first_mp = 1;
		} else {
			f->fingers = 2;
			f->first_mp = 0;
		}
		f->is_mp = 0;

		break;

	case SS4_PACKET_ID_MULTI:
		if (priv->flags & ALPS_BUTTONPAD) {
			f->mt[2].x = SS4_BTL_MF_X_V2(p, 0);
			f->mt[2].y = SS4_BTL_MF_Y_V2(p, 0);
			f->mt[3].x = SS4_BTL_MF_X_V2(p, 1);
			f->mt[3].y = SS4_BTL_MF_Y_V2(p, 1);
			no_data_x = SS4_MFPACKET_NO_AX_BL;
			no_data_y = SS4_MFPACKET_NO_AY_BL;
		} else {
			f->mt[2].x = SS4_STD_MF_X_V2(p, 0);
			f->mt[2].y = SS4_STD_MF_Y_V2(p, 0);
			f->mt[3].x = SS4_STD_MF_X_V2(p, 1);
			f->mt[3].y = SS4_STD_MF_Y_V2(p, 1);
			no_data_x = SS4_MFPACKET_NO_AX;
			no_data_y = SS4_MFPACKET_NO_AY;
		}

		f->first_mp = 0;
		f->is_mp = 1;

		if (SS4_IS_5F_DETECTED(p)) {
			f->fingers = 5;
		} else if (f->mt[3].x == no_data_x &&
			     f->mt[3].y == no_data_y) {
			f->mt[3].x = 0;
			f->mt[3].y = 0;
			f->fingers = 3;
		} else {
			f->fingers = 4;
		}
		break;

	case SS4_PACKET_ID_IDLE:
	default:
		memset(f, 0, sizeof(struct alps_fields));
		break;
	}

	f->left = !!(SS4_BTN_V2(p) & 0x01);
	if (!(priv->flags & ALPS_BUTTONPAD)) {
		f->right = !!(SS4_BTN_V2(p) & 0x02);
		f->middle = !!(SS4_BTN_V2(p) & 0x04);
	}

	return 0;
}

static void alps_process_packet_ss4_v2(struct psmouse *psmouse)
{
	struct alps_data *priv = psmouse->private;
	unsigned char *packet = psmouse->packet;
	struct input_dev *dev = psmouse->dev;
	struct alps_fields *f = &priv->f;

	memset(f, 0, sizeof(struct alps_fields));
	priv->decode_fields(f, packet, psmouse);
	if (priv->multi_packet) {
		/*
		 * Sometimes the first packet will indicate a multi-packet
		 * sequence, but sometimes the next multi-packet would not
		 * come. Check for this, and when it happens process the
		 * position packet as usual.
		 */
		if (f->is_mp) {
			/* Now process the 1st packet */
			priv->decode_fields(f, priv->multi_data, psmouse);
		} else {
			priv->multi_packet = 0;
		}
	}

	/*
	 * "f.is_mp" would always be '0' after merging the 1st and 2nd packet.
	 * When it is set, it means 2nd packet comes without 1st packet come.
	 */
	if (f->is_mp)
		return;

	/* Save the first packet */
	if (!priv->multi_packet && f->first_mp) {
		priv->multi_packet = 1;
		memcpy(priv->multi_data, packet, sizeof(priv->multi_data));
		return;
	}

	priv->multi_packet = 0;

	alps_report_mt_data(psmouse, (f->fingers <= 4) ? f->fingers : 4);

	input_mt_report_finger_count(dev, f->fingers);

	input_report_key(dev, BTN_LEFT, f->left);
	input_report_key(dev, BTN_RIGHT, f->right);
	input_report_key(dev, BTN_MIDDLE, f->middle);

	input_report_abs(dev, ABS_PRESSURE, f->pressure);
	input_sync(dev);
}

static bool alps_is_valid_package_ss4_v2(struct psmouse *psmouse)
{
	if (psmouse->pktcnt == 4 && ((psmouse->packet[3] & 0x08) != 0x08))
		return false;
	if (psmouse->pktcnt == 6 && ((psmouse->packet[5] & 0x10) != 0x0))
		return false;
	return true;
}

1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356
static DEFINE_MUTEX(alps_mutex);

static void alps_register_bare_ps2_mouse(struct work_struct *work)
{
	struct alps_data *priv =
		container_of(work, struct alps_data, dev3_register_work.work);
	struct psmouse *psmouse = priv->psmouse;
	struct input_dev *dev3;
	int error = 0;

	mutex_lock(&alps_mutex);

	if (priv->dev3)
		goto out;

	dev3 = input_allocate_device();
	if (!dev3) {
		psmouse_err(psmouse, "failed to allocate secondary device\n");
		error = -ENOMEM;
		goto out;
	}

	snprintf(priv->phys3, sizeof(priv->phys3), "%s/%s",
		 psmouse->ps2dev.serio->phys,
		 (priv->dev2 ? "input2" : "input1"));
	dev3->phys = priv->phys3;

	/*
	 * format of input device name is: "protocol vendor name"
	 * see function psmouse_switch_protocol() in psmouse-base.c
	 */
	dev3->name = "PS/2 ALPS Mouse";

	dev3->id.bustype = BUS_I8042;
	dev3->id.vendor  = 0x0002;
	dev3->id.product = PSMOUSE_PS2;
	dev3->id.version = 0x0000;
	dev3->dev.parent = &psmouse->ps2dev.serio->dev;

	input_set_capability(dev3, EV_REL, REL_X);
	input_set_capability(dev3, EV_REL, REL_Y);
	input_set_capability(dev3, EV_KEY, BTN_LEFT);
	input_set_capability(dev3, EV_KEY, BTN_RIGHT);
	input_set_capability(dev3, EV_KEY, BTN_MIDDLE);

	__set_bit(INPUT_PROP_POINTER, dev3->propbit);

	error = input_register_device(dev3);
	if (error) {
		psmouse_err(psmouse,
			    "failed to register secondary device: %d\n",
			    error);
		input_free_device(dev3);
		goto out;
	}

	priv->dev3 = dev3;

out:
	/*
	 * Save the error code so that we can detect that we
	 * already tried to create the device.
	 */
	if (error)
		priv->dev3 = ERR_PTR(error);

	mutex_unlock(&alps_mutex);
}

1357
static void alps_report_bare_ps2_packet(struct psmouse *psmouse,
1358 1359 1360
					unsigned char packet[],
					bool report_buttons)
{
1361
	struct alps_data *priv = psmouse->private;
1362
	struct input_dev *dev, *dev2 = NULL;
1363

1364 1365 1366 1367 1368
	/* Figure out which device to use to report the bare packet */
	if (priv->proto_version == ALPS_PROTO_V2 &&
	    (priv->flags & ALPS_DUALPOINT)) {
		/* On V2 devices the DualPoint Stick reports bare packets */
		dev = priv->dev2;
1369
		dev2 = psmouse->dev;
1370
	} else if (unlikely(IS_ERR_OR_NULL(priv->dev3))) {
1371 1372 1373 1374 1375 1376 1377 1378 1379
		/* Register dev3 mouse if we received PS/2 packet first time */
		if (!IS_ERR(priv->dev3))
			psmouse_queue_work(psmouse, &priv->dev3_register_work,
					   0);
		return;
	} else {
		dev = priv->dev3;
	}

1380
	if (report_buttons)
1381
		alps_report_buttons(dev, dev2,
1382 1383
				packet[0] & 1, packet[0] & 2, packet[0] & 4);

1384
	input_report_rel(dev, REL_X,
1385
		packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0);
1386
	input_report_rel(dev, REL_Y,
1387 1388
		packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0);

1389
	input_sync(dev);
1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422
}

static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse)
{
	struct alps_data *priv = psmouse->private;

	if (psmouse->pktcnt < 6)
		return PSMOUSE_GOOD_DATA;

	if (psmouse->pktcnt == 6) {
		/*
		 * Start a timer to flush the packet if it ends up last
		 * 6-byte packet in the stream. Timer needs to fire
		 * psmouse core times out itself. 20 ms should be enough
		 * to decide if we are getting more data or not.
		 */
		mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20));
		return PSMOUSE_GOOD_DATA;
	}

	del_timer(&priv->timer);

	if (psmouse->packet[6] & 0x80) {

		/*
		 * Highest bit is set - that means we either had
		 * complete ALPS packet and this is start of the
		 * next packet or we got garbage.
		 */

		if (((psmouse->packet[3] |
		      psmouse->packet[4] |
		      psmouse->packet[5]) & 0x80) ||
1423
		    (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) {
1424
			psmouse_dbg(psmouse,
1425 1426
				    "refusing packet %4ph (suspected interleaved ps/2)\n",
				    psmouse->packet + 3);
1427 1428 1429
			return PSMOUSE_BAD_DATA;
		}

1430
		priv->process_packet(psmouse);
1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444

		/* Continue with the next packet */
		psmouse->packet[0] = psmouse->packet[6];
		psmouse->pktcnt = 1;

	} else {

		/*
		 * High bit is 0 - that means that we indeed got a PS/2
		 * packet in the middle of ALPS packet.
		 *
		 * There is also possibility that we got 6-byte ALPS
		 * packet followed  by 3-byte packet from trackpoint. We
		 * can not distinguish between these 2 scenarios but
1445
		 * because the latter is unlikely to happen in course of
1446 1447 1448 1449 1450
		 * normal operation (user would need to press all
		 * buttons on the pad and start moving trackpoint
		 * without touching the pad surface) we assume former.
		 * Even if we are wrong the wost thing that would happen
		 * the cursor would jump but we should not get protocol
1451
		 * de-synchronization.
1452 1453
		 */

1454 1455
		alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3],
					    false);
1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473

		/*
		 * Continue with the standard ALPS protocol handling,
		 * but make sure we won't process it as an interleaved
		 * packet again, which may happen if all buttons are
		 * pressed. To avoid this let's reset the 4th bit which
		 * is normally 1.
		 */
		psmouse->packet[3] = psmouse->packet[6] & 0xf7;
		psmouse->pktcnt = 4;
	}

	return PSMOUSE_GOOD_DATA;
}

static void alps_flush_packet(unsigned long data)
{
	struct psmouse *psmouse = (struct psmouse *)data;
1474
	struct alps_data *priv = psmouse->private;
1475 1476 1477

	serio_pause_rx(psmouse->ps2dev.serio);

1478
	if (psmouse->pktcnt == psmouse->pktsize) {
1479 1480 1481 1482 1483 1484 1485 1486 1487

		/*
		 * We did not any more data in reasonable amount of time.
		 * Validate the last 3 bytes and process as a standard
		 * ALPS packet.
		 */
		if ((psmouse->packet[3] |
		     psmouse->packet[4] |
		     psmouse->packet[5]) & 0x80) {
1488
			psmouse_dbg(psmouse,
1489 1490
				    "refusing packet %3ph (suspected interleaved ps/2)\n",
				    psmouse->packet + 3);
1491
		} else {
1492
			priv->process_packet(psmouse);
1493 1494 1495 1496 1497 1498 1499
		}
		psmouse->pktcnt = 0;
	}

	serio_continue_rx(psmouse->ps2dev.serio);
}

1500
static psmouse_ret_t alps_process_byte(struct psmouse *psmouse)
L
Linus Torvalds 已提交
1501 1502 1503
{
	struct alps_data *priv = psmouse->private;

1504 1505 1506 1507 1508
	/*
	 * Check if we are dealing with a bare PS/2 packet, presumably from
	 * a device connected to the external PS/2 port. Because bare PS/2
	 * protocol does not have enough constant bits to self-synchronize
	 * properly we only do this if the device is fully synchronized.
1509
	 * Can not distinguish V8's first byte from PS/2 packet's
1510
	 */
1511 1512 1513 1514
	if (priv->proto_version != ALPS_PROTO_V8 &&
	    !psmouse->out_of_sync_cnt &&
	    (psmouse->packet[0] & 0xc8) == 0x08) {

L
Linus Torvalds 已提交
1515
		if (psmouse->pktcnt == 3) {
1516 1517
			alps_report_bare_ps2_packet(psmouse, psmouse->packet,
						    true);
L
Linus Torvalds 已提交
1518 1519 1520 1521 1522
			return PSMOUSE_FULL_PACKET;
		}
		return PSMOUSE_GOOD_DATA;
	}

1523 1524
	/* Check for PS/2 packet stuffed in the middle of ALPS packet. */

1525
	if ((priv->flags & ALPS_PS2_INTERLEAVED) &&
1526 1527 1528 1529
	    psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) {
		return alps_handle_interleaved_ps2(psmouse);
	}

1530
	if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) {
1531 1532
		psmouse_dbg(psmouse,
			    "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n",
1533
			    psmouse->packet[0], priv->mask0, priv->byte0);
L
Linus Torvalds 已提交
1534
		return PSMOUSE_BAD_DATA;
1535
	}
L
Linus Torvalds 已提交
1536

1537
	/* Bytes 2 - pktsize should have 0 in the highest bit */
1538
	if (priv->proto_version < ALPS_PROTO_V5 &&
1539
	    psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize &&
1540
	    (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) {
1541 1542 1543
		psmouse_dbg(psmouse, "refusing packet[%i] = %x\n",
			    psmouse->pktcnt - 1,
			    psmouse->packet[psmouse->pktcnt - 1]);
1544

1545
		if (priv->proto_version == ALPS_PROTO_V3_RUSHMORE &&
1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558
		    psmouse->pktcnt == psmouse->pktsize) {
			/*
			 * Some Dell boxes, such as Latitude E6440 or E7440
			 * with closed lid, quite often smash last byte of
			 * otherwise valid packet with 0xff. Given that the
			 * next packet is very likely to be valid let's
			 * report PSMOUSE_FULL_PACKET but not process data,
			 * rather than reporting PSMOUSE_BAD_DATA and
			 * filling the logs.
			 */
			return PSMOUSE_FULL_PACKET;
		}

L
Linus Torvalds 已提交
1559
		return PSMOUSE_BAD_DATA;
1560
	}
L
Linus Torvalds 已提交
1561

1562 1563 1564 1565
	if ((priv->proto_version == ALPS_PROTO_V7 &&
			!alps_is_valid_package_v7(psmouse)) ||
	    (priv->proto_version == ALPS_PROTO_V8 &&
			!alps_is_valid_package_ss4_v2(psmouse))) {
1566 1567 1568 1569 1570 1571
		psmouse_dbg(psmouse, "refusing packet[%i] = %x\n",
			    psmouse->pktcnt - 1,
			    psmouse->packet[psmouse->pktcnt - 1]);
		return PSMOUSE_BAD_DATA;
	}

1572
	if (psmouse->pktcnt == psmouse->pktsize) {
1573
		priv->process_packet(psmouse);
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Linus Torvalds 已提交
1574 1575 1576 1577 1578 1579
		return PSMOUSE_FULL_PACKET;
	}

	return PSMOUSE_GOOD_DATA;
}

1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660
static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble)
{
	struct ps2dev *ps2dev = &psmouse->ps2dev;
	struct alps_data *priv = psmouse->private;
	int command;
	unsigned char *param;
	unsigned char dummy[4];

	BUG_ON(nibble > 0xf);

	command = priv->nibble_commands[nibble].command;
	param = (command & 0x0f00) ?
		dummy : (unsigned char *)&priv->nibble_commands[nibble].data;

	if (ps2_command(ps2dev, param, command))
		return -1;

	return 0;
}

static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr)
{
	struct ps2dev *ps2dev = &psmouse->ps2dev;
	struct alps_data *priv = psmouse->private;
	int i, nibble;

	if (ps2_command(ps2dev, NULL, priv->addr_command))
		return -1;

	for (i = 12; i >= 0; i -= 4) {
		nibble = (addr >> i) & 0xf;
		if (alps_command_mode_send_nibble(psmouse, nibble))
			return -1;
	}

	return 0;
}

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

	if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
		return -1;

	/*
	 * The address being read is returned in the first two bytes
	 * of the result. Check that this address matches the expected
	 * address.
	 */
	if (addr != ((param[0] << 8) | param[1]))
		return -1;

	return param[2];
}

static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
{
	if (alps_command_mode_set_addr(psmouse, addr))
		return -1;
	return __alps_command_mode_read_reg(psmouse, addr);
}

static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value)
{
	if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf))
		return -1;
	if (alps_command_mode_send_nibble(psmouse, value & 0xf))
		return -1;
	return 0;
}

static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr,
				       u8 value)
{
	if (alps_command_mode_set_addr(psmouse, addr))
		return -1;
	return __alps_command_mode_write_reg(psmouse, value);
}

1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678
static int alps_rpt_cmd(struct psmouse *psmouse, int init_command,
			int repeated_command, unsigned char *param)
{
	struct ps2dev *ps2dev = &psmouse->ps2dev;

	param[0] = 0;
	if (init_command && ps2_command(ps2dev, param, init_command))
		return -EIO;

	if (ps2_command(ps2dev,  NULL, repeated_command) ||
	    ps2_command(ps2dev,  NULL, repeated_command) ||
	    ps2_command(ps2dev,  NULL, repeated_command))
		return -EIO;

	param[0] = param[1] = param[2] = 0xff;
	if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
		return -EIO;

1679 1680
	psmouse_dbg(psmouse, "%2.2X report: %3ph\n",
		    repeated_command, param);
1681 1682 1683
	return 0;
}

1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699
static bool alps_check_valid_firmware_id(unsigned char id[])
{
	if (id[0] == 0x73)
		return true;

	if (id[0] == 0x88 &&
	    (id[1] == 0x07 ||
	     id[1] == 0x08 ||
	     (id[1] & 0xf0) == 0xb0 ||
	     (id[1] & 0xf0) == 0xc0)) {
		return true;
	}

	return false;
}

1700
static int alps_enter_command_mode(struct psmouse *psmouse)
1701 1702 1703
{
	unsigned char param[4];

1704
	if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) {
1705 1706 1707 1708
		psmouse_err(psmouse, "failed to enter command mode\n");
		return -1;
	}

1709
	if (!alps_check_valid_firmware_id(param)) {
1710
		psmouse_dbg(psmouse,
1711
			    "unknown response while entering command mode\n");
1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724
		return -1;
	}
	return 0;
}

static inline int alps_exit_command_mode(struct psmouse *psmouse)
{
	struct ps2dev *ps2dev = &psmouse->ps2dev;
	if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM))
		return -1;
	return 0;
}

L
Linus Torvalds 已提交
1725 1726 1727 1728 1729
/*
 * For DualPoint devices select the device that should respond to
 * subsequent commands. It looks like glidepad is behind stickpointer,
 * I'd thought it would be other way around...
 */
1730
static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable)
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Linus Torvalds 已提交
1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741
{
	struct ps2dev *ps2dev = &psmouse->ps2dev;
	int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11;

	if (ps2_command(ps2dev, NULL, cmd) ||
	    ps2_command(ps2dev, NULL, cmd) ||
	    ps2_command(ps2dev, NULL, cmd) ||
	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
		return -1;

	/* we may get 3 more bytes, just ignore them */
1742
	ps2_drain(ps2dev, 3, 100);
L
Linus Torvalds 已提交
1743 1744 1745 1746

	return 0;
}

1747
static int alps_absolute_mode_v1_v2(struct psmouse *psmouse)
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1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765
{
	struct ps2dev *ps2dev = &psmouse->ps2dev;

	/* Try ALPS magic knock - 4 disable before enable */
	if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE))
		return -1;

	/*
	 * Switch mouse to poll (remote) mode so motion data will not
	 * get in our way
	 */
	return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL);
}

1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839
static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word)
{
	int i, nibble;

	/*
	 * b0-b11 are valid bits, send sequence is inverse.
	 * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1
	 */
	for (i = 0; i <= 8; i += 4) {
		nibble = (word >> i) & 0xf;
		if (alps_command_mode_send_nibble(psmouse, nibble))
			return -1;
	}

	return 0;
}

static int alps_monitor_mode_write_reg(struct psmouse *psmouse,
				       u16 addr, u16 value)
{
	struct ps2dev *ps2dev = &psmouse->ps2dev;

	/* 0x0A0 is the command to write the word */
	if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) ||
	    alps_monitor_mode_send_word(psmouse, 0x0A0) ||
	    alps_monitor_mode_send_word(psmouse, addr) ||
	    alps_monitor_mode_send_word(psmouse, value) ||
	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
		return -1;

	return 0;
}

static int alps_monitor_mode(struct psmouse *psmouse, bool enable)
{
	struct ps2dev *ps2dev = &psmouse->ps2dev;

	if (enable) {
		/* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */
		if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
		    ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) ||
		    ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
		    ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
		    ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
		    ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
		    ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
		    ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO))
			return -1;
	} else {
		/* EC to exit monitor mode */
		if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP))
			return -1;
	}

	return 0;
}

static int alps_absolute_mode_v6(struct psmouse *psmouse)
{
	u16 reg_val = 0x181;
	int ret = -1;

	/* enter monitor mode, to write the register */
	if (alps_monitor_mode(psmouse, true))
		return -1;

	ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val);

	if (alps_monitor_mode(psmouse, false))
		ret = -1;

	return ret;
}

L
Linus Torvalds 已提交
1840 1841 1842
static int alps_get_status(struct psmouse *psmouse, char *param)
{
	/* Get status: 0xF5 0xF5 0xF5 0xE9 */
1843
	if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param))
L
Linus Torvalds 已提交
1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876
		return -1;

	return 0;
}

/*
 * Turn touchpad tapping on or off. The sequences are:
 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable,
 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable.
 * My guess that 0xE9 (GetInfo) is here as a sync point.
 * For models that also have stickpointer (DualPoints) its tapping
 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but
 * we don't fiddle with it.
 */
static int alps_tap_mode(struct psmouse *psmouse, int enable)
{
	struct ps2dev *ps2dev = &psmouse->ps2dev;
	int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES;
	unsigned char tap_arg = enable ? 0x0A : 0x00;
	unsigned char param[4];

	if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) ||
	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
	    ps2_command(ps2dev, &tap_arg, cmd))
		return -1;

	if (alps_get_status(psmouse, param))
		return -1;

	return 0;
}

1877 1878 1879 1880 1881 1882 1883
/*
 * alps_poll() - poll the touchpad for current motion packet.
 * Used in resync.
 */
static int alps_poll(struct psmouse *psmouse)
{
	struct alps_data *priv = psmouse->private;
1884
	unsigned char buf[sizeof(psmouse->packet)];
1885
	bool poll_failed;
1886

1887
	if (priv->flags & ALPS_PASS)
1888
		alps_passthrough_mode_v2(psmouse, true);
1889 1890 1891 1892

	poll_failed = ps2_command(&psmouse->ps2dev, buf,
				  PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0;

1893
	if (priv->flags & ALPS_PASS)
1894
		alps_passthrough_mode_v2(psmouse, false);
1895

1896
	if (poll_failed || (buf[0] & priv->mask0) != priv->byte0)
1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910
		return -1;

	if ((psmouse->badbyte & 0xc8) == 0x08) {
/*
 * Poll the track stick ...
 */
		if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8)))
			return -1;
	}

	memcpy(psmouse->packet, buf, sizeof(buf));
	return 0;
}

1911
static int alps_hw_init_v1_v2(struct psmouse *psmouse)
L
Linus Torvalds 已提交
1912 1913
{
	struct alps_data *priv = psmouse->private;
D
Dmitry Torokhov 已提交
1914

1915
	if ((priv->flags & ALPS_PASS) &&
1916
	    alps_passthrough_mode_v2(psmouse, true)) {
L
Linus Torvalds 已提交
1917
		return -1;
1918
	}
L
Linus Torvalds 已提交
1919

1920
	if (alps_tap_mode(psmouse, true)) {
1921
		psmouse_warn(psmouse, "Failed to enable hardware tapping\n");
L
Linus Torvalds 已提交
1922
		return -1;
1923
	}
L
Linus Torvalds 已提交
1924

1925
	if (alps_absolute_mode_v1_v2(psmouse)) {
1926
		psmouse_err(psmouse, "Failed to enable absolute mode\n");
L
Linus Torvalds 已提交
1927 1928 1929
		return -1;
	}

1930
	if ((priv->flags & ALPS_PASS) &&
1931
	    alps_passthrough_mode_v2(psmouse, false)) {
L
Linus Torvalds 已提交
1932
		return -1;
1933
	}
L
Linus Torvalds 已提交
1934

1935 1936
	/* ALPS needs stream mode, otherwise it won't report any data */
	if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) {
1937
		psmouse_err(psmouse, "Failed to enable stream mode\n");
1938 1939 1940 1941 1942 1943
		return -1;
	}

	return 0;
}

1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969
static int alps_hw_init_v6(struct psmouse *psmouse)
{
	unsigned char param[2] = {0xC8, 0x14};

	/* Enter passthrough mode to let trackpoint enter 6byte raw mode */
	if (alps_passthrough_mode_v2(psmouse, true))
		return -1;

	if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
	    ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
	    ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
	    ps2_command(&psmouse->ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
	    ps2_command(&psmouse->ps2dev, &param[1], PSMOUSE_CMD_SETRATE))
		return -1;

	if (alps_passthrough_mode_v2(psmouse, false))
		return -1;

	if (alps_absolute_mode_v6(psmouse)) {
		psmouse_err(psmouse, "Failed to enable absolute mode\n");
		return -1;
	}

	return 0;
}

1970
/*
1971
 * Enable or disable passthrough mode to the trackstick.
1972
 */
1973 1974
static int alps_passthrough_mode_v3(struct psmouse *psmouse,
				    int reg_base, bool enable)
1975
{
1976
	int reg_val, ret = -1;
1977

1978
	if (alps_enter_command_mode(psmouse))
1979 1980
		return -1;

1981 1982 1983 1984
	reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008);
	if (reg_val == -1)
		goto error;

1985 1986 1987 1988 1989
	if (enable)
		reg_val |= 0x01;
	else
		reg_val &= ~0x01;

1990
	ret = __alps_command_mode_write_reg(psmouse, reg_val);
1991

1992 1993 1994 1995
error:
	if (alps_exit_command_mode(psmouse))
		ret = -1;
	return ret;
1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
}

/* Must be in command mode when calling this function */
static int alps_absolute_mode_v3(struct psmouse *psmouse)
{
	int reg_val;

	reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
	if (reg_val == -1)
		return -1;

	reg_val |= 0x06;
	if (__alps_command_mode_write_reg(psmouse, reg_val))
		return -1;

	return 0;
}

2014
static int alps_probe_trackstick_v3(struct psmouse *psmouse, int reg_base)
2015
{
2016
	int ret = -EIO, reg_val;
2017

2018
	if (alps_enter_command_mode(psmouse))
2019 2020
		goto error;

2021
	reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08);
2022 2023
	if (reg_val == -1)
		goto error;
2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051

	/* bit 7: trackstick is present */
	ret = reg_val & 0x80 ? 0 : -ENODEV;

error:
	alps_exit_command_mode(psmouse);
	return ret;
}

static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base)
{
	struct ps2dev *ps2dev = &psmouse->ps2dev;
	int ret = 0;
	unsigned char param[4];

	if (alps_passthrough_mode_v3(psmouse, reg_base, true))
		return -EIO;

	/*
	 * E7 report for the trackstick
	 *
	 * There have been reports of failures to seem to trace back
	 * to the above trackstick check failing. When these occur
	 * this E7 report fails, so when that happens we continue
	 * with the assumption that there isn't a trackstick after
	 * all.
	 */
	if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) {
2052
		psmouse_warn(psmouse, "Failed to initialize trackstick (E7 report failed)\n");
2053 2054
		ret = -ENODEV;
	} else {
2055
		psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param);
2056 2057

		/*
2058 2059 2060 2061
		 * Not sure what this does, but it is absolutely
		 * essential. Without it, the touchpad does not
		 * work at all and the trackstick just emits normal
		 * PS/2 packets.
2062
		 */
2063 2064 2065 2066 2067 2068 2069 2070 2071
		if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
		    ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
		    ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
		    alps_command_mode_send_nibble(psmouse, 0x9) ||
		    alps_command_mode_send_nibble(psmouse, 0x4)) {
			psmouse_err(psmouse,
				    "Error sending magic E6 sequence\n");
			ret = -EIO;
			goto error;
2072 2073
		}

2074 2075 2076 2077 2078
		/*
		 * This ensures the trackstick packets are in the format
		 * supported by this driver. If bit 1 isn't set the packet
		 * format is different.
		 */
2079
		if (alps_enter_command_mode(psmouse) ||
2080 2081 2082 2083
		    alps_command_mode_write_reg(psmouse,
						reg_base + 0x08, 0x82) ||
		    alps_exit_command_mode(psmouse))
			ret = -EIO;
2084 2085
	}

2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101
error:
	if (alps_passthrough_mode_v3(psmouse, reg_base, false))
		ret = -EIO;

	return ret;
}

static int alps_hw_init_v3(struct psmouse *psmouse)
{
	struct ps2dev *ps2dev = &psmouse->ps2dev;
	int reg_val;
	unsigned char param[4];

	reg_val = alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE);
	if (reg_val == -EIO)
		goto error;
2102

2103 2104 2105 2106
	if (reg_val == 0 &&
	    alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO)
		goto error;

2107
	if (alps_enter_command_mode(psmouse) ||
2108
	    alps_absolute_mode_v3(psmouse)) {
2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166
		psmouse_err(psmouse, "Failed to enter absolute mode\n");
		goto error;
	}

	reg_val = alps_command_mode_read_reg(psmouse, 0x0006);
	if (reg_val == -1)
		goto error;
	if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
		goto error;

	reg_val = alps_command_mode_read_reg(psmouse, 0x0007);
	if (reg_val == -1)
		goto error;
	if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
		goto error;

	if (alps_command_mode_read_reg(psmouse, 0x0144) == -1)
		goto error;
	if (__alps_command_mode_write_reg(psmouse, 0x04))
		goto error;

	if (alps_command_mode_read_reg(psmouse, 0x0159) == -1)
		goto error;
	if (__alps_command_mode_write_reg(psmouse, 0x03))
		goto error;

	if (alps_command_mode_read_reg(psmouse, 0x0163) == -1)
		goto error;
	if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03))
		goto error;

	if (alps_command_mode_read_reg(psmouse, 0x0162) == -1)
		goto error;
	if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04))
		goto error;

	alps_exit_command_mode(psmouse);

	/* Set rate and enable data reporting */
	param[0] = 0x64;
	if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
		psmouse_err(psmouse, "Failed to enable data reporting\n");
		return -1;
	}

	return 0;

error:
	/*
	 * Leaving the touchpad in command mode will essentially render
	 * it unusable until the machine reboots, so exit it here just
	 * to be safe
	 */
	alps_exit_command_mode(psmouse);
	return -1;
}

2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205
static int alps_get_v3_v7_resolution(struct psmouse *psmouse, int reg_pitch)
{
	int reg, x_pitch, y_pitch, x_electrode, y_electrode, x_phys, y_phys;
	struct alps_data *priv = psmouse->private;

	reg = alps_command_mode_read_reg(psmouse, reg_pitch);
	if (reg < 0)
		return reg;

	x_pitch = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */
	x_pitch = 50 + 2 * x_pitch; /* In 0.1 mm units */

	y_pitch = (char)reg >> 4; /* sign extend upper 4 bits */
	y_pitch = 36 + 2 * y_pitch; /* In 0.1 mm units */

	reg = alps_command_mode_read_reg(psmouse, reg_pitch + 1);
	if (reg < 0)
		return reg;

	x_electrode = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */
	x_electrode = 17 + x_electrode;

	y_electrode = (char)reg >> 4; /* sign extend upper 4 bits */
	y_electrode = 13 + y_electrode;

	x_phys = x_pitch * (x_electrode - 1); /* In 0.1 mm units */
	y_phys = y_pitch * (y_electrode - 1); /* In 0.1 mm units */

	priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */
	priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */

	psmouse_dbg(psmouse,
		    "pitch %dx%d num-electrodes %dx%d physical size %dx%d mm res %dx%d\n",
		    x_pitch, y_pitch, x_electrode, y_electrode,
		    x_phys / 10, y_phys / 10, priv->x_res, priv->y_res);

	return 0;
}

2206 2207
static int alps_hw_init_rushmore_v3(struct psmouse *psmouse)
{
2208
	struct alps_data *priv = psmouse->private;
2209 2210 2211
	struct ps2dev *ps2dev = &psmouse->ps2dev;
	int reg_val, ret = -1;

2212 2213 2214 2215 2216 2217 2218
	if (priv->flags & ALPS_DUALPOINT) {
		reg_val = alps_setup_trackstick_v3(psmouse,
						   ALPS_REG_BASE_RUSHMORE);
		if (reg_val == -EIO)
			goto error;
	}

2219
	if (alps_enter_command_mode(psmouse) ||
2220 2221 2222 2223
	    alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 ||
	    alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00))
		goto error;

2224 2225 2226
	if (alps_get_v3_v7_resolution(psmouse, 0xc2da))
		goto error;

2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250
	reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6);
	if (reg_val == -1)
		goto error;
	if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd))
		goto error;

	if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64))
		goto error;

	/* enter absolute mode */
	reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4);
	if (reg_val == -1)
		goto error;
	if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02))
		goto error;

	alps_exit_command_mode(psmouse);
	return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);

error:
	alps_exit_command_mode(psmouse);
	return ret;
}

2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271
/* Must be in command mode when calling this function */
static int alps_absolute_mode_v4(struct psmouse *psmouse)
{
	int reg_val;

	reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
	if (reg_val == -1)
		return -1;

	reg_val |= 0x02;
	if (__alps_command_mode_write_reg(psmouse, reg_val))
		return -1;

	return 0;
}

static int alps_hw_init_v4(struct psmouse *psmouse)
{
	struct ps2dev *ps2dev = &psmouse->ps2dev;
	unsigned char param[4];

2272
	if (alps_enter_command_mode(psmouse))
2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339
		goto error;

	if (alps_absolute_mode_v4(psmouse)) {
		psmouse_err(psmouse, "Failed to enter absolute mode\n");
		goto error;
	}

	if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c))
		goto error;

	if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03))
		goto error;

	if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03))
		goto error;

	if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15))
		goto error;

	if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01))
		goto error;

	if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03))
		goto error;

	if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03))
		goto error;

	if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03))
		goto error;

	alps_exit_command_mode(psmouse);

	/*
	 * This sequence changes the output from a 9-byte to an
	 * 8-byte format. All the same data seems to be present,
	 * just in a more compact format.
	 */
	param[0] = 0xc8;
	param[1] = 0x64;
	param[2] = 0x50;
	if (ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
	    ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE) ||
	    ps2_command(ps2dev, &param[2], PSMOUSE_CMD_SETRATE) ||
	    ps2_command(ps2dev, param, PSMOUSE_CMD_GETID))
		return -1;

	/* Set rate and enable data reporting */
	param[0] = 0x64;
	if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
		psmouse_err(psmouse, "Failed to enable data reporting\n");
		return -1;
	}

	return 0;

error:
	/*
	 * Leaving the touchpad in command mode will essentially render
	 * it unusable until the machine reboots, so exit it here just
	 * to be safe
	 */
	alps_exit_command_mode(psmouse);
	return -1;
}

2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365
static int alps_get_otp_values_ss4_v2(struct psmouse *psmouse,
				      unsigned char index, unsigned char otp[])
{
	struct ps2dev *ps2dev = &psmouse->ps2dev;

	switch (index) {
	case 0:
		if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)  ||
		    ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)  ||
		    ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO))
			return -1;

		break;

	case 1:
		if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL)  ||
		    ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL)  ||
		    ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO))
			return -1;

		break;
	}

	return 0;
}

2366 2367
static int alps_update_device_area_ss4_v2(unsigned char otp[][4],
					  struct alps_data *priv)
2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390
{
	int num_x_electrode;
	int num_y_electrode;
	int x_pitch, y_pitch, x_phys, y_phys;

	num_x_electrode = SS4_NUMSENSOR_XOFFSET + (otp[1][0] & 0x0F);
	num_y_electrode = SS4_NUMSENSOR_YOFFSET + ((otp[1][0] >> 4) & 0x0F);

	priv->x_max = (num_x_electrode - 1) * SS4_COUNT_PER_ELECTRODE;
	priv->y_max = (num_y_electrode - 1) * SS4_COUNT_PER_ELECTRODE;

	x_pitch = ((otp[1][2] >> 2) & 0x07) + SS4_MIN_PITCH_MM;
	y_pitch = ((otp[1][2] >> 5) & 0x07) + SS4_MIN_PITCH_MM;

	x_phys = x_pitch * (num_x_electrode - 1); /* In 0.1 mm units */
	y_phys = y_pitch * (num_y_electrode - 1); /* In 0.1 mm units */

	priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */
	priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */

	return 0;
}

2391 2392
static int alps_update_btn_info_ss4_v2(unsigned char otp[][4],
				       struct alps_data *priv)
2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421
{
	unsigned char is_btnless;

	is_btnless = (otp[1][1] >> 3) & 0x01;

	if (is_btnless)
		priv->flags |= ALPS_BUTTONPAD;

	return 0;
}

static int alps_set_defaults_ss4_v2(struct psmouse *psmouse,
				    struct alps_data *priv)
{
	unsigned char otp[2][4];

	memset(otp, 0, sizeof(otp));

	if (alps_get_otp_values_ss4_v2(psmouse, 0, &otp[0][0]) ||
	    alps_get_otp_values_ss4_v2(psmouse, 1, &otp[1][0]))
		return -1;

	alps_update_device_area_ss4_v2(otp, priv);

	alps_update_btn_info_ss4_v2(otp, priv);

	return 0;
}

2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467
static int alps_dolphin_get_device_area(struct psmouse *psmouse,
					struct alps_data *priv)
{
	struct ps2dev *ps2dev = &psmouse->ps2dev;
	unsigned char param[4] = {0};
	int num_x_electrode, num_y_electrode;

	if (alps_enter_command_mode(psmouse))
		return -1;

	param[0] = 0x0a;
	if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
	    ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
	    ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE))
		return -1;

	if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
		return -1;

	/*
	 * Dolphin's sensor line number is not fixed. It can be calculated
	 * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET.
	 * Further more, we can get device's x_max and y_max by multiplying
	 * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE.
	 *
	 * e.g. When we get register's sensor_x = 11 & sensor_y = 8,
	 *	real sensor line number X = 11 + 8 = 19, and
	 *	real sensor line number Y = 8 + 1 = 9.
	 *	So, x_max = (19 - 1) * 64 = 1152, and
	 *	    y_max = (9 - 1) * 64 = 512.
	 */
	num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F);
	num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F);
	priv->x_bits = num_x_electrode;
	priv->y_bits = num_y_electrode;
	priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE;
	priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE;

	if (alps_exit_command_mode(psmouse))
		return -1;

	return 0;
}

2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484
static int alps_hw_init_dolphin_v1(struct psmouse *psmouse)
{
	struct ps2dev *ps2dev = &psmouse->ps2dev;
	unsigned char param[2];

	/* This is dolphin "v1" as empirically defined by florin9doi */
	param[0] = 0x64;
	param[1] = 0x28;

	if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
	    ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
	    ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE))
		return -1;

	return 0;
}

2485 2486 2487 2488 2489 2490 2491 2492 2493
static int alps_hw_init_v7(struct psmouse *psmouse)
{
	struct ps2dev *ps2dev = &psmouse->ps2dev;
	int reg_val, ret = -1;

	if (alps_enter_command_mode(psmouse) ||
	    alps_command_mode_read_reg(psmouse, 0xc2d9) == -1)
		goto error;

2494 2495 2496
	if (alps_get_v3_v7_resolution(psmouse, 0xc397))
		goto error;

2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513
	if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64))
		goto error;

	reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4);
	if (reg_val == -1)
		goto error;
	if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02))
		goto error;

	alps_exit_command_mode(psmouse);
	return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);

error:
	alps_exit_command_mode(psmouse);
	return ret;
}

2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542
static int alps_hw_init_ss4_v2(struct psmouse *psmouse)
{
	struct ps2dev *ps2dev = &psmouse->ps2dev;
	char param[2] = {0x64, 0x28};
	int ret = -1;

	/* enter absolute mode */
	if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
	    ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
	    ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE)) {
		goto error;
	}

	/* T.B.D. Decread noise packet number, delete in the future */
	if (alps_exit_command_mode(psmouse) ||
	    alps_enter_command_mode(psmouse) ||
	    alps_command_mode_write_reg(psmouse, 0x001D, 0x20)) {
		goto error;
	}
	alps_exit_command_mode(psmouse);

	return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);

error:
	alps_exit_command_mode(psmouse);
	return ret;
}

2543 2544 2545
static int alps_set_protocol(struct psmouse *psmouse,
			     struct alps_data *priv,
			     const struct alps_protocol_info *protocol)
2546
{
2547 2548 2549 2550 2551 2552 2553 2554
	psmouse->private = priv;

	setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse);

	priv->proto_version = protocol->version;
	priv->byte0 = protocol->byte0;
	priv->mask0 = protocol->mask0;
	priv->flags = protocol->flags;
2555 2556
	if (dmi_name_in_vendors("Dell"))
		priv->flags |= ALPS_DELL;
2557

2558 2559 2560 2561 2562
	priv->x_max = 2000;
	priv->y_max = 1400;
	priv->x_bits = 15;
	priv->y_bits = 11;

2563
	switch (priv->proto_version) {
2564 2565
	case ALPS_PROTO_V1:
	case ALPS_PROTO_V2:
2566 2567 2568
		priv->hw_init = alps_hw_init_v1_v2;
		priv->process_packet = alps_process_packet_v1_v2;
		priv->set_abs_params = alps_set_abs_params_st;
2569 2570
		priv->x_max = 1023;
		priv->y_max = 767;
2571
		break;
2572

2573
	case ALPS_PROTO_V3:
2574 2575
		priv->hw_init = alps_hw_init_v3;
		priv->process_packet = alps_process_packet_v3;
2576
		priv->set_abs_params = alps_set_abs_params_semi_mt;
2577
		priv->decode_fields = alps_decode_pinnacle;
2578 2579
		priv->nibble_commands = alps_v3_nibble_commands;
		priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2580
		break;
2581 2582 2583 2584

	case ALPS_PROTO_V3_RUSHMORE:
		priv->hw_init = alps_hw_init_rushmore_v3;
		priv->process_packet = alps_process_packet_v3;
2585
		priv->set_abs_params = alps_set_abs_params_semi_mt;
2586 2587 2588 2589 2590
		priv->decode_fields = alps_decode_rushmore;
		priv->nibble_commands = alps_v3_nibble_commands;
		priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
		priv->x_bits = 16;
		priv->y_bits = 12;
2591 2592 2593 2594 2595

		if (alps_probe_trackstick_v3(psmouse,
					     ALPS_REG_BASE_RUSHMORE) < 0)
			priv->flags &= ~ALPS_DUALPOINT;

2596 2597
		break;

2598
	case ALPS_PROTO_V4:
2599 2600
		priv->hw_init = alps_hw_init_v4;
		priv->process_packet = alps_process_packet_v4;
2601
		priv->set_abs_params = alps_set_abs_params_semi_mt;
2602 2603
		priv->nibble_commands = alps_v4_nibble_commands;
		priv->addr_command = PSMOUSE_CMD_DISABLE;
2604
		break;
2605

2606 2607
	case ALPS_PROTO_V5:
		priv->hw_init = alps_hw_init_dolphin_v1;
2608
		priv->process_packet = alps_process_touchpad_packet_v3_v5;
2609
		priv->decode_fields = alps_decode_dolphin;
2610
		priv->set_abs_params = alps_set_abs_params_semi_mt;
2611 2612 2613 2614
		priv->nibble_commands = alps_v3_nibble_commands;
		priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
		priv->x_bits = 23;
		priv->y_bits = 12;
2615 2616 2617 2618

		if (alps_dolphin_get_device_area(psmouse, priv))
			return -EIO;

2619
		break;
2620

2621 2622 2623 2624 2625 2626 2627 2628
	case ALPS_PROTO_V6:
		priv->hw_init = alps_hw_init_v6;
		priv->process_packet = alps_process_packet_v6;
		priv->set_abs_params = alps_set_abs_params_st;
		priv->nibble_commands = alps_v6_nibble_commands;
		priv->x_max = 2047;
		priv->y_max = 1535;
		break;
2629

2630 2631 2632 2633
	case ALPS_PROTO_V7:
		priv->hw_init = alps_hw_init_v7;
		priv->process_packet = alps_process_packet_v7;
		priv->decode_fields = alps_decode_packet_v7;
2634
		priv->set_abs_params = alps_set_abs_params_v7;
2635 2636
		priv->nibble_commands = alps_v3_nibble_commands;
		priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2637 2638
		priv->x_max = 0xfff;
		priv->y_max = 0x7ff;
2639 2640 2641

		if (priv->fw_ver[1] != 0xba)
			priv->flags |= ALPS_BUTTONPAD;
2642

2643
		break;
2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656

	case ALPS_PROTO_V8:
		priv->hw_init = alps_hw_init_ss4_v2;
		priv->process_packet = alps_process_packet_ss4_v2;
		priv->decode_fields = alps_decode_ss4_v2;
		priv->set_abs_params = alps_set_abs_params_ss4_v2;
		priv->nibble_commands = alps_v3_nibble_commands;
		priv->addr_command = PSMOUSE_CMD_RESET_WRAP;

		if (alps_set_defaults_ss4_v2(psmouse, priv))
			return -EIO;

		break;
2657
	}
2658 2659

	return 0;
2660 2661
}

2662 2663
static const struct alps_protocol_info *alps_match_table(unsigned char *e7,
							 unsigned char *ec)
2664
{
2665
	const struct alps_model_info *model;
2666 2667
	int i;

2668 2669 2670 2671 2672 2673 2674
	for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) {
		model = &alps_model_data[i];

		if (!memcmp(e7, model->signature, sizeof(model->signature)) &&
		    (!model->command_mode_resp ||
		     model->command_mode_resp == ec[2])) {

2675
			return &model->protocol_info;
2676 2677 2678
		}
	}

2679
	return NULL;
2680 2681 2682 2683
}

static int alps_identify(struct psmouse *psmouse, struct alps_data *priv)
{
2684
	const struct alps_protocol_info *protocol;
2685
	unsigned char e6[4], e7[4], ec[4];
2686
	int error;
2687

2688 2689 2690 2691 2692 2693
	/*
	 * First try "E6 report".
	 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed.
	 * The bits 0-2 of the first byte will be 1s if some buttons are
	 * pressed.
	 */
2694 2695 2696
	if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
			 PSMOUSE_CMD_SETSCALE11, e6))
		return -EIO;
2697

2698 2699
	if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100))
		return -EINVAL;
2700 2701

	/*
2702 2703
	 * Now get the "E7" and "EC" reports.  These will uniquely identify
	 * most ALPS touchpads.
2704
	 */
2705 2706 2707 2708 2709 2710
	if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
			 PSMOUSE_CMD_SETSCALE21, e7) ||
	    alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
			 PSMOUSE_CMD_RESET_WRAP, ec) ||
	    alps_exit_command_mode(psmouse))
		return -EIO;
2711

2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724
	protocol = alps_match_table(e7, ec);
	if (!protocol) {
		if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 &&
			   ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) {
			protocol = &alps_v5_protocol_data;
		} else if (ec[0] == 0x88 &&
			   ((ec[1] & 0xf0) == 0xb0 || (ec[1] & 0xf0) == 0xc0)) {
			protocol = &alps_v7_protocol_data;
		} else if (ec[0] == 0x88 && ec[1] == 0x08) {
			protocol = &alps_v3_rushmore_data;
		} else if (ec[0] == 0x88 && ec[1] == 0x07 &&
			   ec[2] >= 0x90 && ec[2] <= 0x9d) {
			protocol = &alps_v3_protocol_data;
2725 2726 2727
		} else if (e7[0] == 0x73 && e7[1] == 0x03 &&
			   e7[2] == 0x14 && ec[1] == 0x02) {
			protocol = &alps_v8_protocol_data;
2728 2729 2730 2731 2732
		} else {
			psmouse_dbg(psmouse,
				    "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec);
			return -EINVAL;
		}
2733
	}
2734

2735 2736 2737 2738 2739 2740 2741
	if (priv) {
		/* Save the Firmware version */
		memcpy(priv->fw_ver, ec, 3);
		error = alps_set_protocol(psmouse, priv, protocol);
		if (error)
			return error;
	}
2742

2743
	return 0;
2744 2745
}

2746 2747
static int alps_reconnect(struct psmouse *psmouse)
{
2748
	struct alps_data *priv = psmouse->private;
2749

2750 2751
	psmouse_reset(psmouse);

2752
	if (alps_identify(psmouse, priv) < 0)
2753 2754
		return -1;

2755
	return priv->hw_init(psmouse);
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2756 2757 2758 2759 2760
}

static void alps_disconnect(struct psmouse *psmouse)
{
	struct alps_data *priv = psmouse->private;
2761

L
Linus Torvalds 已提交
2762
	psmouse_reset(psmouse);
2763
	del_timer_sync(&priv->timer);
2764 2765 2766 2767
	if (priv->dev2)
		input_unregister_device(priv->dev2);
	if (!IS_ERR_OR_NULL(priv->dev3))
		input_unregister_device(priv->dev3);
L
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2768 2769 2770
	kfree(priv);
}

2771 2772 2773
static void alps_set_abs_params_st(struct alps_data *priv,
				   struct input_dev *dev1)
{
2774 2775
	input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0);
	input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0);
2776
	input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
2777 2778
}

2779 2780
static void alps_set_abs_params_mt_common(struct alps_data *priv,
					  struct input_dev *dev1)
2781
{
2782 2783
	input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0);
	input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0);
2784

2785 2786 2787
	input_abs_set_res(dev1, ABS_MT_POSITION_X, priv->x_res);
	input_abs_set_res(dev1, ABS_MT_POSITION_Y, priv->y_res);

2788 2789
	set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit);
	set_bit(BTN_TOOL_QUADTAP, dev1->keybit);
2790 2791
}

2792 2793
static void alps_set_abs_params_semi_mt(struct alps_data *priv,
					struct input_dev *dev1)
2794 2795 2796 2797 2798 2799
{
	alps_set_abs_params_mt_common(priv, dev1);
	input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);

	input_mt_init_slots(dev1, MAX_TOUCHES,
			    INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED |
2800
				INPUT_MT_SEMI_MT);
2801 2802 2803 2804 2805 2806
}

static void alps_set_abs_params_v7(struct alps_data *priv,
				   struct input_dev *dev1)
{
	alps_set_abs_params_mt_common(priv, dev1);
2807
	set_bit(BTN_TOOL_QUINTTAP, dev1->keybit);
2808

2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821
	input_mt_init_slots(dev1, MAX_TOUCHES,
			    INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED |
				INPUT_MT_TRACK);

	set_bit(BTN_TOOL_QUINTTAP, dev1->keybit);
}

static void alps_set_abs_params_ss4_v2(struct alps_data *priv,
				       struct input_dev *dev1)
{
	alps_set_abs_params_mt_common(priv, dev1);
	input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
	set_bit(BTN_TOOL_QUINTTAP, dev1->keybit);
2822

2823 2824 2825
	input_mt_init_slots(dev1, MAX_TOUCHES,
			    INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED |
				INPUT_MT_TRACK);
2826 2827
}

L
Linus Torvalds 已提交
2828 2829
int alps_init(struct psmouse *psmouse)
{
2830
	struct alps_data *priv = psmouse->private;
2831
	struct input_dev *dev1 = psmouse->dev;
2832
	int error;
L
Linus Torvalds 已提交
2833

2834 2835
	error = priv->hw_init(psmouse);
	if (error)
L
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2836 2837
		goto init_fail;

2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848
	/*
	 * Undo part of setup done for us by psmouse core since touchpad
	 * is not a relative device.
	 */
	__clear_bit(EV_REL, dev1->evbit);
	__clear_bit(REL_X, dev1->relbit);
	__clear_bit(REL_Y, dev1->relbit);

	/*
	 * Now set up our capabilities.
	 */
2849 2850 2851
	dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY);
	dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH);
	dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER);
2852 2853
	dev1->keybit[BIT_WORD(BTN_LEFT)] |=
		BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
L
Linus Torvalds 已提交
2854

2855
	dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS);
2856

2857
	priv->set_abs_params(priv, dev1);
L
Linus Torvalds 已提交
2858

2859
	if (priv->flags & ALPS_WHEEL) {
2860 2861
		dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL);
		dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL);
L
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2862 2863
	}

2864
	if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
2865 2866
		dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD);
		dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK);
L
Linus Torvalds 已提交
2867 2868
	}

2869
	if (priv->flags & ALPS_FOUR_BUTTONS) {
2870 2871 2872 2873
		dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0);
		dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1);
		dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2);
		dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3);
2874 2875 2876
	} else if (priv->flags & ALPS_BUTTONPAD) {
		set_bit(INPUT_PROP_BUTTONPAD, dev1->propbit);
		clear_bit(BTN_RIGHT, dev1->keybit);
2877 2878 2879 2880
	} else {
		dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE);
	}

2881
	if (priv->flags & ALPS_DUALPOINT) {
2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895
		struct input_dev *dev2;

		dev2 = input_allocate_device();
		if (!dev2) {
			psmouse_err(psmouse,
				    "failed to allocate trackstick device\n");
			error = -ENOMEM;
			goto init_fail;
		}

		snprintf(priv->phys2, sizeof(priv->phys2), "%s/input1",
			 psmouse->ps2dev.serio->phys);
		dev2->phys = priv->phys2;

2896 2897 2898 2899 2900
		/*
		 * format of input device name is: "protocol vendor name"
		 * see function psmouse_switch_protocol() in psmouse-base.c
		 */
		dev2->name = "AlpsPS/2 ALPS DualPoint Stick";
2901 2902 2903

		dev2->id.bustype = BUS_I8042;
		dev2->id.vendor  = 0x0002;
2904 2905
		dev2->id.product = PSMOUSE_ALPS;
		dev2->id.version = priv->proto_version;
2906
		dev2->dev.parent = &psmouse->ps2dev.serio->dev;
L
Linus Torvalds 已提交
2907

2908 2909 2910 2911 2912
		input_set_capability(dev2, EV_REL, REL_X);
		input_set_capability(dev2, EV_REL, REL_Y);
		input_set_capability(dev2, EV_KEY, BTN_LEFT);
		input_set_capability(dev2, EV_KEY, BTN_RIGHT);
		input_set_capability(dev2, EV_KEY, BTN_MIDDLE);
L
Linus Torvalds 已提交
2913

2914
		__set_bit(INPUT_PROP_POINTER, dev2->propbit);
2915 2916
		__set_bit(INPUT_PROP_POINTING_STICK, dev2->propbit);

2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932
		error = input_register_device(dev2);
		if (error) {
			psmouse_err(psmouse,
				    "failed to register trackstick device: %d\n",
				    error);
			input_free_device(dev2);
			goto init_fail;
		}

		priv->dev2 = dev2;
	}

	priv->psmouse = psmouse;

	INIT_DELAYED_WORK(&priv->dev3_register_work,
			  alps_register_bare_ps2_mouse);
L
Linus Torvalds 已提交
2933 2934

	psmouse->protocol_handler = alps_process_byte;
2935
	psmouse->poll = alps_poll;
L
Linus Torvalds 已提交
2936 2937
	psmouse->disconnect = alps_disconnect;
	psmouse->reconnect = alps_reconnect;
2938
	psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6;
L
Linus Torvalds 已提交
2939

2940 2941 2942
	/* We are having trouble resyncing ALPS touchpads so disable it for now */
	psmouse->resync_time = 0;

2943 2944 2945
	/* Allow 2 invalid packets without resetting device */
	psmouse->resetafter = psmouse->pktsize * 2;

L
Linus Torvalds 已提交
2946 2947 2948
	return 0;

init_fail:
2949
	psmouse_reset(psmouse);
2950 2951 2952 2953 2954
	/*
	 * Even though we did not allocate psmouse->private we do free
	 * it here.
	 */
	kfree(psmouse->private);
2955
	psmouse->private = NULL;
2956
	return error;
L
Linus Torvalds 已提交
2957 2958
}

2959
int alps_detect(struct psmouse *psmouse, bool set_properties)
L
Linus Torvalds 已提交
2960
{
2961 2962
	struct alps_data *priv;
	int error;
L
Linus Torvalds 已提交
2963

2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980
	error = alps_identify(psmouse, NULL);
	if (error)
		return error;

	/*
	 * Reset the device to make sure it is fully operational:
	 * on some laptops, like certain Dell Latitudes, we may
	 * fail to properly detect presence of trackstick if device
	 * has not been reset.
	 */
	psmouse_reset(psmouse);

	priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	error = alps_identify(psmouse, priv);
2981 2982
	if (error) {
		kfree(priv);
2983
		return error;
2984
	}
L
Linus Torvalds 已提交
2985 2986 2987

	if (set_properties) {
		psmouse->vendor = "ALPS";
2988
		psmouse->name = priv->flags & ALPS_DUALPOINT ?
2989
				"DualPoint TouchPad" : "GlidePoint";
2990 2991 2992 2993 2994 2995 2996 2997 2998 2999
		psmouse->model = priv->proto_version;
	} else {
		/*
		 * Destroy alps_data structure we allocated earlier since
		 * this was just a "trial run". Otherwise we'll keep it
		 * to be used by alps_init() which has to be called if
		 * we succeed and set_properties is true.
		 */
		kfree(priv);
		psmouse->private = NULL;
L
Linus Torvalds 已提交
3000
	}
3001

L
Linus Torvalds 已提交
3002 3003 3004
	return 0;
}