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v3.15
   1/*
   2 * ALPS touchpad PS/2 mouse driver
   3 *
   4 * Copyright (c) 2003 Neil Brown <neilb@cse.unsw.edu.au>
   5 * Copyright (c) 2003-2005 Peter Osterlund <petero2@telia.com>
   6 * Copyright (c) 2004 Dmitry Torokhov <dtor@mail.ru>
   7 * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
   8 * Copyright (c) 2009 Sebastian Kapfer <sebastian_kapfer@gmx.net>
   9 *
  10 * ALPS detection, tap switching and status querying info is taken from
  11 * tpconfig utility (by C. Scott Ananian and Bruce Kall).
  12 *
  13 * This program is free software; you can redistribute it and/or modify it
  14 * under the terms of the GNU General Public License version 2 as published by
  15 * the Free Software Foundation.
  16 */
  17
  18#include <linux/slab.h>
  19#include <linux/input.h>
  20#include <linux/input/mt.h>
  21#include <linux/serio.h>
  22#include <linux/libps2.h>
  23
  24#include "psmouse.h"
  25#include "alps.h"
  26
  27/*
  28 * Definitions for ALPS version 3 and 4 command mode protocol
  29 */
  30#define ALPS_CMD_NIBBLE_10	0x01f2
  31
  32#define ALPS_REG_BASE_RUSHMORE	0xc2c0
  33#define ALPS_REG_BASE_PINNACLE	0x0000
  34
  35static const struct alps_nibble_commands alps_v3_nibble_commands[] = {
  36	{ PSMOUSE_CMD_SETPOLL,		0x00 }, /* 0 */
  37	{ PSMOUSE_CMD_RESET_DIS,	0x00 }, /* 1 */
  38	{ PSMOUSE_CMD_SETSCALE21,	0x00 }, /* 2 */
  39	{ PSMOUSE_CMD_SETRATE,		0x0a }, /* 3 */
  40	{ PSMOUSE_CMD_SETRATE,		0x14 }, /* 4 */
  41	{ PSMOUSE_CMD_SETRATE,		0x28 }, /* 5 */
  42	{ PSMOUSE_CMD_SETRATE,		0x3c }, /* 6 */
  43	{ PSMOUSE_CMD_SETRATE,		0x50 }, /* 7 */
  44	{ PSMOUSE_CMD_SETRATE,		0x64 }, /* 8 */
  45	{ PSMOUSE_CMD_SETRATE,		0xc8 }, /* 9 */
  46	{ ALPS_CMD_NIBBLE_10,		0x00 }, /* a */
  47	{ PSMOUSE_CMD_SETRES,		0x00 }, /* b */
  48	{ PSMOUSE_CMD_SETRES,		0x01 }, /* c */
  49	{ PSMOUSE_CMD_SETRES,		0x02 }, /* d */
  50	{ PSMOUSE_CMD_SETRES,		0x03 }, /* e */
  51	{ PSMOUSE_CMD_SETSCALE11,	0x00 }, /* f */
  52};
  53
  54static const struct alps_nibble_commands alps_v4_nibble_commands[] = {
  55	{ PSMOUSE_CMD_ENABLE,		0x00 }, /* 0 */
  56	{ PSMOUSE_CMD_RESET_DIS,	0x00 }, /* 1 */
  57	{ PSMOUSE_CMD_SETSCALE21,	0x00 }, /* 2 */
  58	{ PSMOUSE_CMD_SETRATE,		0x0a }, /* 3 */
  59	{ PSMOUSE_CMD_SETRATE,		0x14 }, /* 4 */
  60	{ PSMOUSE_CMD_SETRATE,		0x28 }, /* 5 */
  61	{ PSMOUSE_CMD_SETRATE,		0x3c }, /* 6 */
  62	{ PSMOUSE_CMD_SETRATE,		0x50 }, /* 7 */
  63	{ PSMOUSE_CMD_SETRATE,		0x64 }, /* 8 */
  64	{ PSMOUSE_CMD_SETRATE,		0xc8 }, /* 9 */
  65	{ ALPS_CMD_NIBBLE_10,		0x00 }, /* a */
  66	{ PSMOUSE_CMD_SETRES,		0x00 }, /* b */
  67	{ PSMOUSE_CMD_SETRES,		0x01 }, /* c */
  68	{ PSMOUSE_CMD_SETRES,		0x02 }, /* d */
  69	{ PSMOUSE_CMD_SETRES,		0x03 }, /* e */
  70	{ PSMOUSE_CMD_SETSCALE11,	0x00 }, /* f */
  71};
  72
  73static const struct alps_nibble_commands alps_v6_nibble_commands[] = {
  74	{ PSMOUSE_CMD_ENABLE,		0x00 }, /* 0 */
  75	{ PSMOUSE_CMD_SETRATE,		0x0a }, /* 1 */
  76	{ PSMOUSE_CMD_SETRATE,		0x14 }, /* 2 */
  77	{ PSMOUSE_CMD_SETRATE,		0x28 }, /* 3 */
  78	{ PSMOUSE_CMD_SETRATE,		0x3c }, /* 4 */
  79	{ PSMOUSE_CMD_SETRATE,		0x50 }, /* 5 */
  80	{ PSMOUSE_CMD_SETRATE,		0x64 }, /* 6 */
  81	{ PSMOUSE_CMD_SETRATE,		0xc8 }, /* 7 */
  82	{ PSMOUSE_CMD_GETID,		0x00 }, /* 8 */
  83	{ PSMOUSE_CMD_GETINFO,		0x00 }, /* 9 */
  84	{ PSMOUSE_CMD_SETRES,		0x00 }, /* a */
  85	{ PSMOUSE_CMD_SETRES,		0x01 }, /* b */
  86	{ PSMOUSE_CMD_SETRES,		0x02 }, /* c */
  87	{ PSMOUSE_CMD_SETRES,		0x03 }, /* d */
  88	{ PSMOUSE_CMD_SETSCALE21,	0x00 }, /* e */
  89	{ PSMOUSE_CMD_SETSCALE11,	0x00 }, /* f */
  90};
  91
  92
 
  93#define ALPS_DUALPOINT		0x02	/* touchpad has trackstick */
  94#define ALPS_PASS		0x04	/* device has a pass-through port */
  95
  96#define ALPS_WHEEL		0x08	/* hardware wheel present */
  97#define ALPS_FW_BK_1		0x10	/* front & back buttons present */
  98#define ALPS_FW_BK_2		0x20	/* front & back buttons present */
  99#define ALPS_FOUR_BUTTONS	0x40	/* 4 direction button present */
 100#define ALPS_PS2_INTERLEAVED	0x80	/* 3-byte PS/2 packet interleaved with
 101					   6-byte ALPS packet */
 102
 103static const struct alps_model_info alps_model_data[] = {
 104	{ { 0x32, 0x02, 0x14 },	0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT },	/* Toshiba Salellite Pro M10 */
 105	{ { 0x33, 0x02, 0x0a },	0x00, ALPS_PROTO_V1, 0x88, 0xf8, 0 },				/* UMAX-530T */
 106	{ { 0x53, 0x02, 0x0a },	0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
 107	{ { 0x53, 0x02, 0x14 },	0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
 108	{ { 0x60, 0x03, 0xc8 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },				/* HP ze1115 */
 109	{ { 0x63, 0x02, 0x0a },	0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
 110	{ { 0x63, 0x02, 0x14 },	0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
 111	{ { 0x63, 0x02, 0x28 },	0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 },		/* Fujitsu Siemens S6010 */
 112	{ { 0x63, 0x02, 0x3c },	0x00, ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL },			/* Toshiba Satellite S2400-103 */
 113	{ { 0x63, 0x02, 0x50 },	0x00, ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 },		/* NEC Versa L320 */
 114	{ { 0x63, 0x02, 0x64 },	0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
 115	{ { 0x63, 0x03, 0xc8 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT },	/* Dell Latitude D800 */
 116	{ { 0x73, 0x00, 0x0a },	0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT },		/* ThinkPad R61 8918-5QG */
 117	{ { 0x73, 0x02, 0x0a },	0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
 118	{ { 0x73, 0x02, 0x14 },	0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 },		/* Ahtec Laptop */
 119	{ { 0x20, 0x02, 0x0e },	0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT },	/* XXX */
 120	{ { 0x22, 0x02, 0x0a },	0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT },
 121	{ { 0x22, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT },	/* Dell Latitude D600 */
 122	/* Dell Latitude E5500, E6400, E6500, Precision M4400 */
 123	{ { 0x62, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xcf, 0xcf,
 124		ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED },
 125	{ { 0x73, 0x00, 0x14 }, 0x00, ALPS_PROTO_V6, 0xff, 0xff, ALPS_DUALPOINT },		/* Dell XT2 */
 126	{ { 0x73, 0x02, 0x50 }, 0x00, ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS },		/* Dell Vostro 1400 */
 127	{ { 0x52, 0x01, 0x14 }, 0x00, ALPS_PROTO_V2, 0xff, 0xff,
 128		ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED },				/* Toshiba Tecra A11-11L */
 129	{ { 0x73, 0x02, 0x64 },	0x8a, ALPS_PROTO_V4, 0x8f, 0x8f, 0 },
 130};
 131
 132static void alps_set_abs_params_st(struct alps_data *priv,
 133				   struct input_dev *dev1);
 134static void alps_set_abs_params_mt(struct alps_data *priv,
 135				   struct input_dev *dev1);
 136
 137/*
 138 * XXX - this entry is suspicious. First byte has zero lower nibble,
 139 * which is what a normal mouse would report. Also, the value 0x0e
 140 * isn't valid per PS/2 spec.
 141 */
 142
 143/* Packet formats are described in Documentation/input/alps.txt */
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 144
 145static bool alps_is_valid_first_byte(struct alps_data *priv,
 146				     unsigned char data)
 147{
 148	return (data & priv->mask0) == priv->byte0;
 149}
 150
 151static void alps_report_buttons(struct psmouse *psmouse,
 152				struct input_dev *dev1, struct input_dev *dev2,
 153				int left, int right, int middle)
 154{
 155	struct input_dev *dev;
 156
 157	/*
 158	 * If shared button has already been reported on the
 159	 * other device (dev2) then this event should be also
 160	 * sent through that device.
 161	 */
 162	dev = test_bit(BTN_LEFT, dev2->key) ? dev2 : dev1;
 163	input_report_key(dev, BTN_LEFT, left);
 164
 165	dev = test_bit(BTN_RIGHT, dev2->key) ? dev2 : dev1;
 166	input_report_key(dev, BTN_RIGHT, right);
 167
 168	dev = test_bit(BTN_MIDDLE, dev2->key) ? dev2 : dev1;
 169	input_report_key(dev, BTN_MIDDLE, middle);
 170
 171	/*
 172	 * Sync the _other_ device now, we'll do the first
 173	 * device later once we report the rest of the events.
 174	 */
 175	input_sync(dev2);
 176}
 177
 178static void alps_process_packet_v1_v2(struct psmouse *psmouse)
 179{
 180	struct alps_data *priv = psmouse->private;
 
 181	unsigned char *packet = psmouse->packet;
 182	struct input_dev *dev = psmouse->dev;
 183	struct input_dev *dev2 = priv->dev2;
 184	int x, y, z, ges, fin, left, right, middle;
 185	int back = 0, forward = 0;
 186
 187	if (priv->proto_version == ALPS_PROTO_V1) {
 188		left = packet[2] & 0x10;
 189		right = packet[2] & 0x08;
 190		middle = 0;
 191		x = packet[1] | ((packet[0] & 0x07) << 7);
 192		y = packet[4] | ((packet[3] & 0x07) << 7);
 193		z = packet[5];
 194	} else {
 195		left = packet[3] & 1;
 196		right = packet[3] & 2;
 197		middle = packet[3] & 4;
 198		x = packet[1] | ((packet[2] & 0x78) << (7 - 3));
 199		y = packet[4] | ((packet[3] & 0x70) << (7 - 4));
 200		z = packet[5];
 201	}
 202
 203	if (priv->flags & ALPS_FW_BK_1) {
 204		back = packet[0] & 0x10;
 205		forward = packet[2] & 4;
 206	}
 207
 208	if (priv->flags & ALPS_FW_BK_2) {
 209		back = packet[3] & 4;
 210		forward = packet[2] & 4;
 211		if ((middle = forward && back))
 212			forward = back = 0;
 213	}
 214
 215	ges = packet[2] & 1;
 216	fin = packet[2] & 2;
 217
 218	if ((priv->flags & ALPS_DUALPOINT) && z == 127) {
 219		input_report_rel(dev2, REL_X,  (x > 383 ? (x - 768) : x));
 220		input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y));
 221
 222		alps_report_buttons(psmouse, dev2, dev, left, right, middle);
 223
 224		input_sync(dev2);
 225		return;
 226	}
 227
 228	alps_report_buttons(psmouse, dev, dev2, left, right, middle);
 229
 230	/* Convert hardware tap to a reasonable Z value */
 231	if (ges && !fin)
 232		z = 40;
 233
 234	/*
 235	 * A "tap and drag" operation is reported by the hardware as a transition
 236	 * from (!fin && ges) to (fin && ges). This should be translated to the
 237	 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually.
 238	 */
 239	if (ges && fin && !priv->prev_fin) {
 240		input_report_abs(dev, ABS_X, x);
 241		input_report_abs(dev, ABS_Y, y);
 242		input_report_abs(dev, ABS_PRESSURE, 0);
 243		input_report_key(dev, BTN_TOOL_FINGER, 0);
 244		input_sync(dev);
 245	}
 246	priv->prev_fin = fin;
 247
 248	if (z > 30)
 249		input_report_key(dev, BTN_TOUCH, 1);
 250	if (z < 25)
 251		input_report_key(dev, BTN_TOUCH, 0);
 252
 253	if (z > 0) {
 254		input_report_abs(dev, ABS_X, x);
 255		input_report_abs(dev, ABS_Y, y);
 256	}
 257
 258	input_report_abs(dev, ABS_PRESSURE, z);
 259	input_report_key(dev, BTN_TOOL_FINGER, z > 0);
 260
 261	if (priv->flags & ALPS_WHEEL)
 262		input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07));
 263
 264	if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
 265		input_report_key(dev, BTN_FORWARD, forward);
 266		input_report_key(dev, BTN_BACK, back);
 267	}
 268
 269	if (priv->flags & ALPS_FOUR_BUTTONS) {
 270		input_report_key(dev, BTN_0, packet[2] & 4);
 271		input_report_key(dev, BTN_1, packet[0] & 0x10);
 272		input_report_key(dev, BTN_2, packet[3] & 4);
 273		input_report_key(dev, BTN_3, packet[0] & 0x20);
 274	}
 275
 276	input_sync(dev);
 277}
 278
 279/*
 280 * Process bitmap data for V5 protocols. Return value is null.
 281 *
 282 * The bitmaps don't have enough data to track fingers, so this function
 283 * only generates points representing a bounding box of at most two contacts.
 284 * These two points are returned in x1, y1, x2, and y2.
 285 */
 286static void alps_process_bitmap_dolphin(struct alps_data *priv,
 287					struct alps_fields *fields,
 288					int *x1, int *y1, int *x2, int *y2)
 289{
 290	int box_middle_x, box_middle_y;
 291	unsigned int x_map, y_map;
 292	unsigned char start_bit, end_bit;
 293	unsigned char x_msb, x_lsb, y_msb, y_lsb;
 294
 295	x_map = fields->x_map;
 296	y_map = fields->y_map;
 297
 298	if (!x_map || !y_map)
 299		return;
 300
 301	/* Get Most-significant and Least-significant bit */
 302	x_msb = fls(x_map);
 303	x_lsb = ffs(x_map);
 304	y_msb = fls(y_map);
 305	y_lsb = ffs(y_map);
 306
 307	/* Most-significant bit should never exceed max sensor line number */
 308	if (x_msb > priv->x_bits || y_msb > priv->y_bits)
 309		return;
 310
 311	*x1 = *y1 = *x2 = *y2 = 0;
 312
 313	if (fields->fingers > 1) {
 314		start_bit = priv->x_bits - x_msb;
 315		end_bit = priv->x_bits - x_lsb;
 316		box_middle_x = (priv->x_max * (start_bit + end_bit)) /
 317				(2 * (priv->x_bits - 1));
 318
 319		start_bit = y_lsb - 1;
 320		end_bit = y_msb - 1;
 321		box_middle_y = (priv->y_max * (start_bit + end_bit)) /
 322				(2 * (priv->y_bits - 1));
 323		*x1 = fields->x;
 324		*y1 = fields->y;
 325		*x2 = 2 * box_middle_x - *x1;
 326		*y2 = 2 * box_middle_y - *y1;
 327	}
 328}
 329
 330/*
 331 * Process bitmap data from v3 and v4 protocols. Returns the number of
 332 * fingers detected. A return value of 0 means at least one of the
 333 * bitmaps was empty.
 334 *
 335 * The bitmaps don't have enough data to track fingers, so this function
 336 * only generates points representing a bounding box of all contacts.
 337 * These points are returned in x1, y1, x2, and y2 when the return value
 338 * is greater than 0.
 339 */
 340static int alps_process_bitmap(struct alps_data *priv,
 341			       unsigned int x_map, unsigned int y_map,
 342			       int *x1, int *y1, int *x2, int *y2)
 343{
 344	struct alps_bitmap_point {
 345		int start_bit;
 346		int num_bits;
 347	};
 348
 349	int fingers_x = 0, fingers_y = 0, fingers;
 350	int i, bit, prev_bit;
 351	struct alps_bitmap_point x_low = {0,}, x_high = {0,};
 352	struct alps_bitmap_point y_low = {0,}, y_high = {0,};
 353	struct alps_bitmap_point *point;
 354
 355	if (!x_map || !y_map)
 356		return 0;
 357
 358	*x1 = *y1 = *x2 = *y2 = 0;
 359
 360	prev_bit = 0;
 361	point = &x_low;
 362	for (i = 0; x_map != 0; i++, x_map >>= 1) {
 363		bit = x_map & 1;
 364		if (bit) {
 365			if (!prev_bit) {
 366				point->start_bit = i;
 367				fingers_x++;
 368			}
 369			point->num_bits++;
 370		} else {
 371			if (prev_bit)
 372				point = &x_high;
 373			else
 374				point->num_bits = 0;
 375		}
 376		prev_bit = bit;
 377	}
 378
 379	/*
 380	 * y bitmap is reversed for what we need (lower positions are in
 381	 * higher bits), so we process from the top end.
 382	 */
 383	y_map = y_map << (sizeof(y_map) * BITS_PER_BYTE - priv->y_bits);
 384	prev_bit = 0;
 385	point = &y_low;
 386	for (i = 0; y_map != 0; i++, y_map <<= 1) {
 387		bit = y_map & (1 << (sizeof(y_map) * BITS_PER_BYTE - 1));
 388		if (bit) {
 389			if (!prev_bit) {
 390				point->start_bit = i;
 391				fingers_y++;
 392			}
 393			point->num_bits++;
 394		} else {
 395			if (prev_bit)
 396				point = &y_high;
 397			else
 398				point->num_bits = 0;
 399		}
 400		prev_bit = bit;
 401	}
 402
 403	/*
 404	 * Fingers can overlap, so we use the maximum count of fingers
 405	 * on either axis as the finger count.
 406	 */
 407	fingers = max(fingers_x, fingers_y);
 408
 409	/*
 410	 * If total fingers is > 1 but either axis reports only a single
 411	 * contact, we have overlapping or adjacent fingers. For the
 412	 * purposes of creating a bounding box, divide the single contact
 413	 * (roughly) equally between the two points.
 414	 */
 415	if (fingers > 1) {
 416		if (fingers_x == 1) {
 417			i = x_low.num_bits / 2;
 418			x_low.num_bits = x_low.num_bits - i;
 419			x_high.start_bit = x_low.start_bit + i;
 420			x_high.num_bits = max(i, 1);
 421		} else if (fingers_y == 1) {
 422			i = y_low.num_bits / 2;
 423			y_low.num_bits = y_low.num_bits - i;
 424			y_high.start_bit = y_low.start_bit + i;
 425			y_high.num_bits = max(i, 1);
 426		}
 427	}
 428
 429	*x1 = (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) /
 430	      (2 * (priv->x_bits - 1));
 431	*y1 = (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) /
 432	      (2 * (priv->y_bits - 1));
 433
 434	if (fingers > 1) {
 435		*x2 = (priv->x_max *
 436		       (2 * x_high.start_bit + x_high.num_bits - 1)) /
 437		      (2 * (priv->x_bits - 1));
 438		*y2 = (priv->y_max *
 439		       (2 * y_high.start_bit + y_high.num_bits - 1)) /
 440		      (2 * (priv->y_bits - 1));
 441	}
 442
 443	return fingers;
 444}
 445
 446static void alps_set_slot(struct input_dev *dev, int slot, bool active,
 447			  int x, int y)
 448{
 449	input_mt_slot(dev, slot);
 450	input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
 451	if (active) {
 452		input_report_abs(dev, ABS_MT_POSITION_X, x);
 453		input_report_abs(dev, ABS_MT_POSITION_Y, y);
 454	}
 455}
 456
 457static void alps_report_semi_mt_data(struct input_dev *dev, int num_fingers,
 458				     int x1, int y1, int x2, int y2)
 459{
 460	alps_set_slot(dev, 0, num_fingers != 0, x1, y1);
 461	alps_set_slot(dev, 1, num_fingers == 2, x2, y2);
 462}
 463
 464static void alps_process_trackstick_packet_v3(struct psmouse *psmouse)
 465{
 466	struct alps_data *priv = psmouse->private;
 467	unsigned char *packet = psmouse->packet;
 468	struct input_dev *dev = priv->dev2;
 469	int x, y, z, left, right, middle;
 470
 471	/* Sanity check packet */
 472	if (!(packet[0] & 0x40)) {
 473		psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n");
 474		return;
 475	}
 476
 477	/*
 478	 * There's a special packet that seems to indicate the end
 479	 * of a stream of trackstick data. Filter these out.
 480	 */
 481	if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f)
 482		return;
 483
 484	x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f));
 485	y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f));
 486	z = (packet[4] & 0x7c) >> 2;
 487
 488	/*
 489	 * The x and y values tend to be quite large, and when used
 490	 * alone the trackstick is difficult to use. Scale them down
 491	 * to compensate.
 492	 */
 493	x /= 8;
 494	y /= 8;
 495
 496	input_report_rel(dev, REL_X, x);
 497	input_report_rel(dev, REL_Y, -y);
 498
 499	/*
 500	 * Most ALPS models report the trackstick buttons in the touchpad
 501	 * packets, but a few report them here. No reliable way has been
 502	 * found to differentiate between the models upfront, so we enable
 503	 * the quirk in response to seeing a button press in the trackstick
 504	 * packet.
 505	 */
 506	left = packet[3] & 0x01;
 507	right = packet[3] & 0x02;
 508	middle = packet[3] & 0x04;
 509
 510	if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) &&
 511	    (left || right || middle))
 512		priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS;
 513
 514	if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) {
 515		input_report_key(dev, BTN_LEFT, left);
 516		input_report_key(dev, BTN_RIGHT, right);
 517		input_report_key(dev, BTN_MIDDLE, middle);
 518	}
 519
 520	input_sync(dev);
 521	return;
 522}
 523
 524static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p)
 525{
 526	f->left = !!(p[3] & 0x01);
 527	f->right = !!(p[3] & 0x02);
 528	f->middle = !!(p[3] & 0x04);
 529
 530	f->ts_left = !!(p[3] & 0x10);
 531	f->ts_right = !!(p[3] & 0x20);
 532	f->ts_middle = !!(p[3] & 0x40);
 533}
 534
 535static void alps_decode_pinnacle(struct alps_fields *f, unsigned char *p,
 536				 struct psmouse *psmouse)
 537{
 538	f->first_mp = !!(p[4] & 0x40);
 539	f->is_mp = !!(p[0] & 0x40);
 540
 541	f->fingers = (p[5] & 0x3) + 1;
 542	f->x_map = ((p[4] & 0x7e) << 8) |
 543		   ((p[1] & 0x7f) << 2) |
 544		   ((p[0] & 0x30) >> 4);
 545	f->y_map = ((p[3] & 0x70) << 4) |
 546		   ((p[2] & 0x7f) << 1) |
 547		   (p[4] & 0x01);
 548
 549	f->x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) |
 550	       ((p[0] & 0x30) >> 4);
 551	f->y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f);
 552	f->z = p[5] & 0x7f;
 553
 554	alps_decode_buttons_v3(f, p);
 555}
 556
 557static void alps_decode_rushmore(struct alps_fields *f, unsigned char *p,
 558				 struct psmouse *psmouse)
 559{
 560	alps_decode_pinnacle(f, p, psmouse);
 561
 562	f->x_map |= (p[5] & 0x10) << 11;
 563	f->y_map |= (p[5] & 0x20) << 6;
 564}
 565
 566static void alps_decode_dolphin(struct alps_fields *f, unsigned char *p,
 567				struct psmouse *psmouse)
 568{
 569	u64 palm_data = 0;
 570	struct alps_data *priv = psmouse->private;
 571
 572	f->first_mp = !!(p[0] & 0x02);
 573	f->is_mp = !!(p[0] & 0x20);
 574
 575	if (!f->is_mp) {
 576		f->x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7));
 577		f->y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3));
 578		f->z = (p[0] & 4) ? 0 : p[5] & 0x7f;
 579		alps_decode_buttons_v3(f, p);
 580	} else {
 581		f->fingers = ((p[0] & 0x6) >> 1 |
 582		     (p[0] & 0x10) >> 2);
 583
 584		palm_data = (p[1] & 0x7f) |
 585			    ((p[2] & 0x7f) << 7) |
 586			    ((p[4] & 0x7f) << 14) |
 587			    ((p[5] & 0x7f) << 21) |
 588			    ((p[3] & 0x07) << 28) |
 589			    (((u64)p[3] & 0x70) << 27) |
 590			    (((u64)p[0] & 0x01) << 34);
 591
 592		/* Y-profile is stored in P(0) to p(n-1), n = y_bits; */
 593		f->y_map = palm_data & (BIT(priv->y_bits) - 1);
 594
 595		/* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */
 596		f->x_map = (palm_data >> priv->y_bits) &
 597			   (BIT(priv->x_bits) - 1);
 598	}
 599}
 600
 601static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse)
 602{
 603	struct alps_data *priv = psmouse->private;
 604	unsigned char *packet = psmouse->packet;
 605	struct input_dev *dev = psmouse->dev;
 606	struct input_dev *dev2 = priv->dev2;
 607	int x1 = 0, y1 = 0, x2 = 0, y2 = 0;
 608	int fingers = 0, bmap_fn;
 609	struct alps_fields f = {0};
 610
 611	priv->decode_fields(&f, packet, psmouse);
 612
 613	/*
 614	 * There's no single feature of touchpad position and bitmap packets
 615	 * that can be used to distinguish between them. We rely on the fact
 616	 * that a bitmap packet should always follow a position packet with
 617	 * bit 6 of packet[4] set.
 618	 */
 619	if (priv->multi_packet) {
 620		/*
 621		 * Sometimes a position packet will indicate a multi-packet
 622		 * sequence, but then what follows is another position
 623		 * packet. Check for this, and when it happens process the
 624		 * position packet as usual.
 625		 */
 626		if (f.is_mp) {
 627			fingers = f.fingers;
 628			if (priv->proto_version == ALPS_PROTO_V3) {
 629				bmap_fn = alps_process_bitmap(priv, f.x_map,
 630							      f.y_map, &x1, &y1,
 631							      &x2, &y2);
 632
 633				/*
 634				 * We shouldn't report more than one finger if
 635				 * we don't have two coordinates.
 636				 */
 637				if (fingers > 1 && bmap_fn < 2)
 638					fingers = bmap_fn;
 639
 640				/* Now process position packet */
 641				priv->decode_fields(&f, priv->multi_data,
 642						    psmouse);
 643			} else {
 644				/*
 645				 * Because Dolphin uses position packet's
 646				 * coordinate data as Pt1 and uses it to
 647				 * calculate Pt2, so we need to do position
 648				 * packet decode first.
 649				 */
 650				priv->decode_fields(&f, priv->multi_data,
 651						    psmouse);
 652
 653				/*
 654				 * Since Dolphin's finger number is reliable,
 655				 * there is no need to compare with bmap_fn.
 656				 */
 657				alps_process_bitmap_dolphin(priv, &f, &x1, &y1,
 658							    &x2, &y2);
 659			}
 660		} else {
 661			priv->multi_packet = 0;
 662		}
 663	}
 664
 665	/*
 666	 * Bit 6 of byte 0 is not usually set in position packets. The only
 667	 * times it seems to be set is in situations where the data is
 668	 * suspect anyway, e.g. a palm resting flat on the touchpad. Given
 669	 * this combined with the fact that this bit is useful for filtering
 670	 * out misidentified bitmap packets, we reject anything with this
 671	 * bit set.
 672	 */
 673	if (f.is_mp)
 674		return;
 675
 676	if (!priv->multi_packet && f.first_mp) {
 677		priv->multi_packet = 1;
 678		memcpy(priv->multi_data, packet, sizeof(priv->multi_data));
 679		return;
 680	}
 681
 682	priv->multi_packet = 0;
 683
 684	/*
 685	 * Sometimes the hardware sends a single packet with z = 0
 686	 * in the middle of a stream. Real releases generate packets
 687	 * with x, y, and z all zero, so these seem to be flukes.
 688	 * Ignore them.
 689	 */
 690	if (f.x && f.y && !f.z)
 691		return;
 692
 693	/*
 694	 * If we don't have MT data or the bitmaps were empty, we have
 695	 * to rely on ST data.
 696	 */
 697	if (!fingers) {
 698		x1 = f.x;
 699		y1 = f.y;
 700		fingers = f.z > 0 ? 1 : 0;
 701	}
 702
 703	if (f.z >= 64)
 704		input_report_key(dev, BTN_TOUCH, 1);
 705	else
 706		input_report_key(dev, BTN_TOUCH, 0);
 707
 708	alps_report_semi_mt_data(dev, fingers, x1, y1, x2, y2);
 709
 710	input_mt_report_finger_count(dev, fingers);
 711
 712	input_report_key(dev, BTN_LEFT, f.left);
 713	input_report_key(dev, BTN_RIGHT, f.right);
 714	input_report_key(dev, BTN_MIDDLE, f.middle);
 715
 716	if (f.z > 0) {
 717		input_report_abs(dev, ABS_X, f.x);
 718		input_report_abs(dev, ABS_Y, f.y);
 719	}
 720	input_report_abs(dev, ABS_PRESSURE, f.z);
 721
 722	input_sync(dev);
 723
 724	if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) {
 725		input_report_key(dev2, BTN_LEFT, f.ts_left);
 726		input_report_key(dev2, BTN_RIGHT, f.ts_right);
 727		input_report_key(dev2, BTN_MIDDLE, f.ts_middle);
 728		input_sync(dev2);
 729	}
 730}
 731
 732static void alps_process_packet_v3(struct psmouse *psmouse)
 733{
 734	unsigned char *packet = psmouse->packet;
 735
 736	/*
 737	 * v3 protocol packets come in three types, two representing
 738	 * touchpad data and one representing trackstick data.
 739	 * Trackstick packets seem to be distinguished by always
 740	 * having 0x3f in the last byte. This value has never been
 741	 * observed in the last byte of either of the other types
 742	 * of packets.
 743	 */
 744	if (packet[5] == 0x3f) {
 745		alps_process_trackstick_packet_v3(psmouse);
 746		return;
 747	}
 748
 749	alps_process_touchpad_packet_v3_v5(psmouse);
 750}
 751
 752static void alps_process_packet_v6(struct psmouse *psmouse)
 753{
 754	struct alps_data *priv = psmouse->private;
 755	unsigned char *packet = psmouse->packet;
 756	struct input_dev *dev = psmouse->dev;
 757	struct input_dev *dev2 = priv->dev2;
 758	int x, y, z, left, right, middle;
 759
 760	/*
 761	 * We can use Byte5 to distinguish if the packet is from Touchpad
 762	 * or Trackpoint.
 763	 * Touchpad:	0 - 0x7E
 764	 * Trackpoint:	0x7F
 765	 */
 766	if (packet[5] == 0x7F) {
 767		/* It should be a DualPoint when received Trackpoint packet */
 768		if (!(priv->flags & ALPS_DUALPOINT))
 769			return;
 770
 771		/* Trackpoint packet */
 772		x = packet[1] | ((packet[3] & 0x20) << 2);
 773		y = packet[2] | ((packet[3] & 0x40) << 1);
 774		z = packet[4];
 775		left = packet[3] & 0x01;
 776		right = packet[3] & 0x02;
 777		middle = packet[3] & 0x04;
 778
 779		/* To prevent the cursor jump when finger lifted */
 780		if (x == 0x7F && y == 0x7F && z == 0x7F)
 781			x = y = z = 0;
 782
 783		/* Divide 4 since trackpoint's speed is too fast */
 784		input_report_rel(dev2, REL_X, (char)x / 4);
 785		input_report_rel(dev2, REL_Y, -((char)y / 4));
 786
 787		input_report_key(dev2, BTN_LEFT, left);
 788		input_report_key(dev2, BTN_RIGHT, right);
 789		input_report_key(dev2, BTN_MIDDLE, middle);
 790
 791		input_sync(dev2);
 792		return;
 793	}
 794
 795	/* Touchpad packet */
 796	x = packet[1] | ((packet[3] & 0x78) << 4);
 797	y = packet[2] | ((packet[4] & 0x78) << 4);
 798	z = packet[5];
 799	left = packet[3] & 0x01;
 800	right = packet[3] & 0x02;
 801
 802	if (z > 30)
 803		input_report_key(dev, BTN_TOUCH, 1);
 804	if (z < 25)
 805		input_report_key(dev, BTN_TOUCH, 0);
 806
 807	if (z > 0) {
 808		input_report_abs(dev, ABS_X, x);
 809		input_report_abs(dev, ABS_Y, y);
 810	}
 811
 812	input_report_abs(dev, ABS_PRESSURE, z);
 813	input_report_key(dev, BTN_TOOL_FINGER, z > 0);
 814
 815	/* v6 touchpad does not have middle button */
 816	input_report_key(dev, BTN_LEFT, left);
 817	input_report_key(dev, BTN_RIGHT, right);
 818
 819	input_sync(dev);
 820}
 821
 822static void alps_process_packet_v4(struct psmouse *psmouse)
 823{
 824	struct alps_data *priv = psmouse->private;
 825	unsigned char *packet = psmouse->packet;
 826	struct input_dev *dev = psmouse->dev;
 827	int offset;
 828	int x, y, z;
 829	int left, right;
 830	int x1, y1, x2, y2;
 831	int fingers = 0;
 832	unsigned int x_bitmap, y_bitmap;
 833
 834	/*
 835	 * v4 has a 6-byte encoding for bitmap data, but this data is
 836	 * broken up between 3 normal packets. Use priv->multi_packet to
 837	 * track our position in the bitmap packet.
 838	 */
 839	if (packet[6] & 0x40) {
 840		/* sync, reset position */
 841		priv->multi_packet = 0;
 842	}
 843
 844	if (WARN_ON_ONCE(priv->multi_packet > 2))
 845		return;
 846
 847	offset = 2 * priv->multi_packet;
 848	priv->multi_data[offset] = packet[6];
 849	priv->multi_data[offset + 1] = packet[7];
 850
 851	if (++priv->multi_packet > 2) {
 852		priv->multi_packet = 0;
 853
 854		x_bitmap = ((priv->multi_data[2] & 0x1f) << 10) |
 855			   ((priv->multi_data[3] & 0x60) << 3) |
 856			   ((priv->multi_data[0] & 0x3f) << 2) |
 857			   ((priv->multi_data[1] & 0x60) >> 5);
 858		y_bitmap = ((priv->multi_data[5] & 0x01) << 10) |
 859			   ((priv->multi_data[3] & 0x1f) << 5) |
 860			    (priv->multi_data[1] & 0x1f);
 861
 862		fingers = alps_process_bitmap(priv, x_bitmap, y_bitmap,
 863					      &x1, &y1, &x2, &y2);
 864
 865		/* Store MT data.*/
 866		priv->fingers = fingers;
 867		priv->x1 = x1;
 868		priv->x2 = x2;
 869		priv->y1 = y1;
 870		priv->y2 = y2;
 871	}
 872
 873	left = packet[4] & 0x01;
 874	right = packet[4] & 0x02;
 875
 876	x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) |
 877	    ((packet[0] & 0x30) >> 4);
 878	y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f);
 879	z = packet[5] & 0x7f;
 880
 881	/*
 882	 * If there were no contacts in the bitmap, use ST
 883	 * points in MT reports.
 884	 * If there were two contacts or more, report MT data.
 885	 */
 886	if (priv->fingers < 2) {
 887		x1 = x;
 888		y1 = y;
 889		fingers = z > 0 ? 1 : 0;
 890	} else {
 891		fingers = priv->fingers;
 892		x1 = priv->x1;
 893		x2 = priv->x2;
 894		y1 = priv->y1;
 895		y2 = priv->y2;
 896	}
 897
 898	if (z >= 64)
 899		input_report_key(dev, BTN_TOUCH, 1);
 900	else
 901		input_report_key(dev, BTN_TOUCH, 0);
 902
 903	alps_report_semi_mt_data(dev, fingers, x1, y1, x2, y2);
 904
 905	input_mt_report_finger_count(dev, fingers);
 906
 907	input_report_key(dev, BTN_LEFT, left);
 908	input_report_key(dev, BTN_RIGHT, right);
 909
 910	if (z > 0) {
 911		input_report_abs(dev, ABS_X, x);
 912		input_report_abs(dev, ABS_Y, y);
 913	}
 914	input_report_abs(dev, ABS_PRESSURE, z);
 915
 916	input_sync(dev);
 917}
 918
 919static void alps_report_bare_ps2_packet(struct psmouse *psmouse,
 920					unsigned char packet[],
 921					bool report_buttons)
 922{
 923	struct alps_data *priv = psmouse->private;
 924	struct input_dev *dev2 = priv->dev2;
 925
 926	if (report_buttons)
 927		alps_report_buttons(psmouse, dev2, psmouse->dev,
 928				packet[0] & 1, packet[0] & 2, packet[0] & 4);
 929
 930	input_report_rel(dev2, REL_X,
 931		packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0);
 932	input_report_rel(dev2, REL_Y,
 933		packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0);
 934
 935	input_sync(dev2);
 936}
 937
 938static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse)
 939{
 940	struct alps_data *priv = psmouse->private;
 941
 942	if (psmouse->pktcnt < 6)
 943		return PSMOUSE_GOOD_DATA;
 944
 945	if (psmouse->pktcnt == 6) {
 946		/*
 947		 * Start a timer to flush the packet if it ends up last
 948		 * 6-byte packet in the stream. Timer needs to fire
 949		 * psmouse core times out itself. 20 ms should be enough
 950		 * to decide if we are getting more data or not.
 951		 */
 952		mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20));
 953		return PSMOUSE_GOOD_DATA;
 954	}
 955
 956	del_timer(&priv->timer);
 957
 958	if (psmouse->packet[6] & 0x80) {
 959
 960		/*
 961		 * Highest bit is set - that means we either had
 962		 * complete ALPS packet and this is start of the
 963		 * next packet or we got garbage.
 964		 */
 965
 966		if (((psmouse->packet[3] |
 967		      psmouse->packet[4] |
 968		      psmouse->packet[5]) & 0x80) ||
 969		    (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) {
 970			psmouse_dbg(psmouse,
 971				    "refusing packet %4ph (suspected interleaved ps/2)\n",
 972				    psmouse->packet + 3);
 
 973			return PSMOUSE_BAD_DATA;
 974		}
 975
 976		priv->process_packet(psmouse);
 977
 978		/* Continue with the next packet */
 979		psmouse->packet[0] = psmouse->packet[6];
 980		psmouse->pktcnt = 1;
 981
 982	} else {
 983
 984		/*
 985		 * High bit is 0 - that means that we indeed got a PS/2
 986		 * packet in the middle of ALPS packet.
 987		 *
 988		 * There is also possibility that we got 6-byte ALPS
 989		 * packet followed  by 3-byte packet from trackpoint. We
 990		 * can not distinguish between these 2 scenarios but
 991		 * because the latter is unlikely to happen in course of
 992		 * normal operation (user would need to press all
 993		 * buttons on the pad and start moving trackpoint
 994		 * without touching the pad surface) we assume former.
 995		 * Even if we are wrong the wost thing that would happen
 996		 * the cursor would jump but we should not get protocol
 997		 * de-synchronization.
 998		 */
 999
1000		alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3],
1001					    false);
1002
1003		/*
1004		 * Continue with the standard ALPS protocol handling,
1005		 * but make sure we won't process it as an interleaved
1006		 * packet again, which may happen if all buttons are
1007		 * pressed. To avoid this let's reset the 4th bit which
1008		 * is normally 1.
1009		 */
1010		psmouse->packet[3] = psmouse->packet[6] & 0xf7;
1011		psmouse->pktcnt = 4;
1012	}
1013
1014	return PSMOUSE_GOOD_DATA;
1015}
1016
1017static void alps_flush_packet(unsigned long data)
1018{
1019	struct psmouse *psmouse = (struct psmouse *)data;
1020	struct alps_data *priv = psmouse->private;
1021
1022	serio_pause_rx(psmouse->ps2dev.serio);
1023
1024	if (psmouse->pktcnt == psmouse->pktsize) {
1025
1026		/*
1027		 * We did not any more data in reasonable amount of time.
1028		 * Validate the last 3 bytes and process as a standard
1029		 * ALPS packet.
1030		 */
1031		if ((psmouse->packet[3] |
1032		     psmouse->packet[4] |
1033		     psmouse->packet[5]) & 0x80) {
1034			psmouse_dbg(psmouse,
1035				    "refusing packet %3ph (suspected interleaved ps/2)\n",
1036				    psmouse->packet + 3);
 
1037		} else {
1038			priv->process_packet(psmouse);
1039		}
1040		psmouse->pktcnt = 0;
1041	}
1042
1043	serio_continue_rx(psmouse->ps2dev.serio);
1044}
1045
1046static psmouse_ret_t alps_process_byte(struct psmouse *psmouse)
1047{
1048	struct alps_data *priv = psmouse->private;
 
1049
1050	if ((psmouse->packet[0] & 0xc8) == 0x08) { /* PS/2 packet */
1051		if (psmouse->pktcnt == 3) {
1052			alps_report_bare_ps2_packet(psmouse, psmouse->packet,
1053						    true);
1054			return PSMOUSE_FULL_PACKET;
1055		}
1056		return PSMOUSE_GOOD_DATA;
1057	}
1058
1059	/* Check for PS/2 packet stuffed in the middle of ALPS packet. */
1060
1061	if ((priv->flags & ALPS_PS2_INTERLEAVED) &&
1062	    psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) {
1063		return alps_handle_interleaved_ps2(psmouse);
1064	}
1065
1066	if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) {
1067		psmouse_dbg(psmouse,
1068			    "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n",
1069			    psmouse->packet[0], priv->mask0, priv->byte0);
1070		return PSMOUSE_BAD_DATA;
1071	}
1072
1073	/* Bytes 2 - pktsize should have 0 in the highest bit */
1074	if ((priv->proto_version < ALPS_PROTO_V5) &&
1075	    psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize &&
1076	    (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) {
1077		psmouse_dbg(psmouse, "refusing packet[%i] = %x\n",
1078			    psmouse->pktcnt - 1,
1079			    psmouse->packet[psmouse->pktcnt - 1]);
1080		return PSMOUSE_BAD_DATA;
1081	}
1082
1083	if (psmouse->pktcnt == psmouse->pktsize) {
1084		priv->process_packet(psmouse);
1085		return PSMOUSE_FULL_PACKET;
1086	}
1087
1088	return PSMOUSE_GOOD_DATA;
1089}
1090
1091static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble)
1092{
1093	struct ps2dev *ps2dev = &psmouse->ps2dev;
1094	struct alps_data *priv = psmouse->private;
1095	int command;
1096	unsigned char *param;
1097	unsigned char dummy[4];
1098
1099	BUG_ON(nibble > 0xf);
1100
1101	command = priv->nibble_commands[nibble].command;
1102	param = (command & 0x0f00) ?
1103		dummy : (unsigned char *)&priv->nibble_commands[nibble].data;
1104
1105	if (ps2_command(ps2dev, param, command))
1106		return -1;
1107
1108	return 0;
1109}
1110
1111static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr)
1112{
1113	struct ps2dev *ps2dev = &psmouse->ps2dev;
1114	struct alps_data *priv = psmouse->private;
1115	int i, nibble;
1116
1117	if (ps2_command(ps2dev, NULL, priv->addr_command))
1118		return -1;
1119
1120	for (i = 12; i >= 0; i -= 4) {
1121		nibble = (addr >> i) & 0xf;
1122		if (alps_command_mode_send_nibble(psmouse, nibble))
1123			return -1;
1124	}
1125
1126	return 0;
1127}
1128
1129static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
1130{
1131	struct ps2dev *ps2dev = &psmouse->ps2dev;
 
1132	unsigned char param[4];
1133
1134	if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
1135		return -1;
1136
1137	/*
1138	 * The address being read is returned in the first two bytes
1139	 * of the result. Check that this address matches the expected
1140	 * address.
1141	 */
1142	if (addr != ((param[0] << 8) | param[1]))
1143		return -1;
1144
1145	return param[2];
1146}
1147
1148static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
1149{
1150	if (alps_command_mode_set_addr(psmouse, addr))
1151		return -1;
1152	return __alps_command_mode_read_reg(psmouse, addr);
1153}
1154
1155static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value)
1156{
1157	if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf))
1158		return -1;
1159	if (alps_command_mode_send_nibble(psmouse, value & 0xf))
1160		return -1;
1161	return 0;
1162}
1163
1164static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr,
1165				       u8 value)
1166{
1167	if (alps_command_mode_set_addr(psmouse, addr))
1168		return -1;
1169	return __alps_command_mode_write_reg(psmouse, value);
1170}
1171
1172static int alps_rpt_cmd(struct psmouse *psmouse, int init_command,
1173			int repeated_command, unsigned char *param)
1174{
1175	struct ps2dev *ps2dev = &psmouse->ps2dev;
1176
 
 
 
 
1177	param[0] = 0;
1178	if (init_command && ps2_command(ps2dev, param, init_command))
1179		return -EIO;
1180
1181	if (ps2_command(ps2dev,  NULL, repeated_command) ||
1182	    ps2_command(ps2dev,  NULL, repeated_command) ||
1183	    ps2_command(ps2dev,  NULL, repeated_command))
1184		return -EIO;
1185
1186	param[0] = param[1] = param[2] = 0xff;
1187	if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
1188		return -EIO;
1189
1190	psmouse_dbg(psmouse, "%2.2X report: %3ph\n",
1191		    repeated_command, param);
1192	return 0;
1193}
1194
1195static int alps_enter_command_mode(struct psmouse *psmouse)
1196{
1197	unsigned char param[4];
1198
1199	if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) {
1200		psmouse_err(psmouse, "failed to enter command mode\n");
1201		return -1;
 
1202	}
1203
1204	if ((param[0] != 0x88 || (param[1] != 0x07 && param[1] != 0x08)) &&
1205	    param[0] != 0x73) {
1206		psmouse_dbg(psmouse,
1207			    "unknown response while entering command mode\n");
1208		return -1;
1209	}
1210	return 0;
1211}
1212
1213static inline int alps_exit_command_mode(struct psmouse *psmouse)
1214{
1215	struct ps2dev *ps2dev = &psmouse->ps2dev;
1216	if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM))
1217		return -1;
1218	return 0;
1219}
1220
1221/*
1222 * For DualPoint devices select the device that should respond to
1223 * subsequent commands. It looks like glidepad is behind stickpointer,
1224 * I'd thought it would be other way around...
1225 */
1226static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable)
1227{
1228	struct ps2dev *ps2dev = &psmouse->ps2dev;
1229	int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11;
1230
1231	if (ps2_command(ps2dev, NULL, cmd) ||
1232	    ps2_command(ps2dev, NULL, cmd) ||
1233	    ps2_command(ps2dev, NULL, cmd) ||
1234	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1235		return -1;
1236
1237	/* we may get 3 more bytes, just ignore them */
1238	ps2_drain(ps2dev, 3, 100);
1239
1240	return 0;
1241}
1242
1243static int alps_absolute_mode_v1_v2(struct psmouse *psmouse)
1244{
1245	struct ps2dev *ps2dev = &psmouse->ps2dev;
1246
1247	/* Try ALPS magic knock - 4 disable before enable */
1248	if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1249	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1250	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1251	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1252	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE))
1253		return -1;
1254
1255	/*
1256	 * Switch mouse to poll (remote) mode so motion data will not
1257	 * get in our way
1258	 */
1259	return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL);
1260}
1261
1262static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word)
1263{
1264	int i, nibble;
1265
1266	/*
1267	 * b0-b11 are valid bits, send sequence is inverse.
1268	 * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1
1269	 */
1270	for (i = 0; i <= 8; i += 4) {
1271		nibble = (word >> i) & 0xf;
1272		if (alps_command_mode_send_nibble(psmouse, nibble))
1273			return -1;
1274	}
1275
1276	return 0;
1277}
1278
1279static int alps_monitor_mode_write_reg(struct psmouse *psmouse,
1280				       u16 addr, u16 value)
1281{
1282	struct ps2dev *ps2dev = &psmouse->ps2dev;
1283
1284	/* 0x0A0 is the command to write the word */
1285	if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) ||
1286	    alps_monitor_mode_send_word(psmouse, 0x0A0) ||
1287	    alps_monitor_mode_send_word(psmouse, addr) ||
1288	    alps_monitor_mode_send_word(psmouse, value) ||
1289	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1290		return -1;
1291
1292	return 0;
1293}
1294
1295static int alps_monitor_mode(struct psmouse *psmouse, bool enable)
1296{
1297	struct ps2dev *ps2dev = &psmouse->ps2dev;
1298
1299	if (enable) {
1300		/* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */
1301		if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
1302		    ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) ||
1303		    ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1304		    ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1305		    ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
1306		    ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1307		    ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
1308		    ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO))
1309			return -1;
1310	} else {
1311		/* EC to exit monitor mode */
1312		if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP))
1313			return -1;
1314	}
1315
1316	return 0;
1317}
1318
1319static int alps_absolute_mode_v6(struct psmouse *psmouse)
1320{
1321	u16 reg_val = 0x181;
1322	int ret = -1;
1323
1324	/* enter monitor mode, to write the register */
1325	if (alps_monitor_mode(psmouse, true))
1326		return -1;
1327
1328	ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val);
1329
1330	if (alps_monitor_mode(psmouse, false))
1331		ret = -1;
1332
1333	return ret;
1334}
1335
1336static int alps_get_status(struct psmouse *psmouse, char *param)
1337{
1338	/* Get status: 0xF5 0xF5 0xF5 0xE9 */
1339	if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param))
 
 
 
1340		return -1;
1341
 
 
1342	return 0;
1343}
1344
1345/*
1346 * Turn touchpad tapping on or off. The sequences are:
1347 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable,
1348 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable.
1349 * My guess that 0xE9 (GetInfo) is here as a sync point.
1350 * For models that also have stickpointer (DualPoints) its tapping
1351 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but
1352 * we don't fiddle with it.
1353 */
1354static int alps_tap_mode(struct psmouse *psmouse, int enable)
1355{
1356	struct ps2dev *ps2dev = &psmouse->ps2dev;
1357	int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES;
1358	unsigned char tap_arg = enable ? 0x0A : 0x00;
1359	unsigned char param[4];
1360
1361	if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) ||
1362	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1363	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1364	    ps2_command(ps2dev, &tap_arg, cmd))
1365		return -1;
1366
1367	if (alps_get_status(psmouse, param))
1368		return -1;
1369
1370	return 0;
1371}
1372
1373/*
1374 * alps_poll() - poll the touchpad for current motion packet.
1375 * Used in resync.
1376 */
1377static int alps_poll(struct psmouse *psmouse)
1378{
1379	struct alps_data *priv = psmouse->private;
1380	unsigned char buf[sizeof(psmouse->packet)];
1381	bool poll_failed;
1382
1383	if (priv->flags & ALPS_PASS)
1384		alps_passthrough_mode_v2(psmouse, true);
1385
1386	poll_failed = ps2_command(&psmouse->ps2dev, buf,
1387				  PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0;
1388
1389	if (priv->flags & ALPS_PASS)
1390		alps_passthrough_mode_v2(psmouse, false);
1391
1392	if (poll_failed || (buf[0] & priv->mask0) != priv->byte0)
1393		return -1;
1394
1395	if ((psmouse->badbyte & 0xc8) == 0x08) {
1396/*
1397 * Poll the track stick ...
1398 */
1399		if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8)))
1400			return -1;
1401	}
1402
1403	memcpy(psmouse->packet, buf, sizeof(buf));
1404	return 0;
1405}
1406
1407static int alps_hw_init_v1_v2(struct psmouse *psmouse)
1408{
1409	struct alps_data *priv = psmouse->private;
 
1410
1411	if ((priv->flags & ALPS_PASS) &&
1412	    alps_passthrough_mode_v2(psmouse, true)) {
1413		return -1;
1414	}
1415
1416	if (alps_tap_mode(psmouse, true)) {
1417		psmouse_warn(psmouse, "Failed to enable hardware tapping\n");
1418		return -1;
1419	}
1420
1421	if (alps_absolute_mode_v1_v2(psmouse)) {
1422		psmouse_err(psmouse, "Failed to enable absolute mode\n");
1423		return -1;
1424	}
1425
1426	if ((priv->flags & ALPS_PASS) &&
1427	    alps_passthrough_mode_v2(psmouse, false)) {
1428		return -1;
1429	}
1430
1431	/* ALPS needs stream mode, otherwise it won't report any data */
1432	if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) {
1433		psmouse_err(psmouse, "Failed to enable stream mode\n");
1434		return -1;
1435	}
1436
1437	return 0;
1438}
1439
1440static int alps_hw_init_v6(struct psmouse *psmouse)
1441{
1442	unsigned char param[2] = {0xC8, 0x14};
1443
1444	/* Enter passthrough mode to let trackpoint enter 6byte raw mode */
1445	if (alps_passthrough_mode_v2(psmouse, true))
1446		return -1;
1447
1448	if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1449	    ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1450	    ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1451	    ps2_command(&psmouse->ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
1452	    ps2_command(&psmouse->ps2dev, &param[1], PSMOUSE_CMD_SETRATE))
1453		return -1;
1454
1455	if (alps_passthrough_mode_v2(psmouse, false))
1456		return -1;
1457
1458	if (alps_absolute_mode_v6(psmouse)) {
1459		psmouse_err(psmouse, "Failed to enable absolute mode\n");
1460		return -1;
1461	}
1462
1463	return 0;
1464}
1465
1466/*
1467 * Enable or disable passthrough mode to the trackstick.
1468 */
1469static int alps_passthrough_mode_v3(struct psmouse *psmouse,
1470				    int reg_base, bool enable)
1471{
1472	int reg_val, ret = -1;
1473
1474	if (alps_enter_command_mode(psmouse))
1475		return -1;
1476
1477	reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008);
1478	if (reg_val == -1)
1479		goto error;
1480
1481	if (enable)
1482		reg_val |= 0x01;
1483	else
1484		reg_val &= ~0x01;
1485
1486	ret = __alps_command_mode_write_reg(psmouse, reg_val);
1487
1488error:
1489	if (alps_exit_command_mode(psmouse))
1490		ret = -1;
1491	return ret;
1492}
1493
1494/* Must be in command mode when calling this function */
1495static int alps_absolute_mode_v3(struct psmouse *psmouse)
1496{
1497	int reg_val;
1498
1499	reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
1500	if (reg_val == -1)
1501		return -1;
1502
1503	reg_val |= 0x06;
1504	if (__alps_command_mode_write_reg(psmouse, reg_val))
1505		return -1;
1506
1507	return 0;
1508}
1509
1510static int alps_probe_trackstick_v3(struct psmouse *psmouse, int reg_base)
1511{
1512	int ret = -EIO, reg_val;
1513
1514	if (alps_enter_command_mode(psmouse))
1515		goto error;
1516
1517	reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08);
1518	if (reg_val == -1)
1519		goto error;
1520
1521	/* bit 7: trackstick is present */
1522	ret = reg_val & 0x80 ? 0 : -ENODEV;
1523
1524error:
1525	alps_exit_command_mode(psmouse);
1526	return ret;
1527}
1528
1529static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base)
1530{
1531	struct ps2dev *ps2dev = &psmouse->ps2dev;
1532	int ret = 0;
1533	unsigned char param[4];
1534
1535	if (alps_passthrough_mode_v3(psmouse, reg_base, true))
1536		return -EIO;
1537
1538	/*
1539	 * E7 report for the trackstick
1540	 *
1541	 * There have been reports of failures to seem to trace back
1542	 * to the above trackstick check failing. When these occur
1543	 * this E7 report fails, so when that happens we continue
1544	 * with the assumption that there isn't a trackstick after
1545	 * all.
1546	 */
1547	if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) {
1548		psmouse_warn(psmouse, "trackstick E7 report failed\n");
1549		ret = -ENODEV;
1550	} else {
1551		psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param);
1552
1553		/*
1554		 * Not sure what this does, but it is absolutely
1555		 * essential. Without it, the touchpad does not
1556		 * work at all and the trackstick just emits normal
1557		 * PS/2 packets.
1558		 */
1559		if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1560		    ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1561		    ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1562		    alps_command_mode_send_nibble(psmouse, 0x9) ||
1563		    alps_command_mode_send_nibble(psmouse, 0x4)) {
1564			psmouse_err(psmouse,
1565				    "Error sending magic E6 sequence\n");
1566			ret = -EIO;
1567			goto error;
1568		}
1569
1570		/*
1571		 * This ensures the trackstick packets are in the format
1572		 * supported by this driver. If bit 1 isn't set the packet
1573		 * format is different.
1574		 */
1575		if (alps_enter_command_mode(psmouse) ||
1576		    alps_command_mode_write_reg(psmouse,
1577						reg_base + 0x08, 0x82) ||
1578		    alps_exit_command_mode(psmouse))
1579			ret = -EIO;
1580	}
1581
1582error:
1583	if (alps_passthrough_mode_v3(psmouse, reg_base, false))
1584		ret = -EIO;
1585
1586	return ret;
1587}
1588
1589static int alps_hw_init_v3(struct psmouse *psmouse)
1590{
1591	struct ps2dev *ps2dev = &psmouse->ps2dev;
1592	int reg_val;
1593	unsigned char param[4];
1594
1595	reg_val = alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE);
1596	if (reg_val == -EIO)
1597		goto error;
1598
1599	if (reg_val == 0 &&
1600	    alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO)
1601		goto error;
1602
1603	if (alps_enter_command_mode(psmouse) ||
1604	    alps_absolute_mode_v3(psmouse)) {
1605		psmouse_err(psmouse, "Failed to enter absolute mode\n");
1606		goto error;
1607	}
1608
1609	reg_val = alps_command_mode_read_reg(psmouse, 0x0006);
1610	if (reg_val == -1)
1611		goto error;
1612	if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
1613		goto error;
1614
1615	reg_val = alps_command_mode_read_reg(psmouse, 0x0007);
1616	if (reg_val == -1)
1617		goto error;
1618	if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
1619		goto error;
1620
1621	if (alps_command_mode_read_reg(psmouse, 0x0144) == -1)
1622		goto error;
1623	if (__alps_command_mode_write_reg(psmouse, 0x04))
1624		goto error;
1625
1626	if (alps_command_mode_read_reg(psmouse, 0x0159) == -1)
1627		goto error;
1628	if (__alps_command_mode_write_reg(psmouse, 0x03))
1629		goto error;
1630
1631	if (alps_command_mode_read_reg(psmouse, 0x0163) == -1)
1632		goto error;
1633	if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03))
1634		goto error;
1635
1636	if (alps_command_mode_read_reg(psmouse, 0x0162) == -1)
1637		goto error;
1638	if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04))
1639		goto error;
1640
1641	alps_exit_command_mode(psmouse);
1642
1643	/* Set rate and enable data reporting */
1644	param[0] = 0x64;
1645	if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
1646	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
1647		psmouse_err(psmouse, "Failed to enable data reporting\n");
1648		return -1;
1649	}
1650
1651	return 0;
1652
1653error:
1654	/*
1655	 * Leaving the touchpad in command mode will essentially render
1656	 * it unusable until the machine reboots, so exit it here just
1657	 * to be safe
1658	 */
1659	alps_exit_command_mode(psmouse);
1660	return -1;
1661}
1662
1663static int alps_hw_init_rushmore_v3(struct psmouse *psmouse)
1664{
1665	struct alps_data *priv = psmouse->private;
1666	struct ps2dev *ps2dev = &psmouse->ps2dev;
1667	int reg_val, ret = -1;
1668
1669	if (priv->flags & ALPS_DUALPOINT) {
1670		reg_val = alps_setup_trackstick_v3(psmouse,
1671						   ALPS_REG_BASE_RUSHMORE);
1672		if (reg_val == -EIO)
1673			goto error;
1674		if (reg_val == -ENODEV)
1675			priv->flags &= ~ALPS_DUALPOINT;
1676	}
1677
1678	if (alps_enter_command_mode(psmouse) ||
1679	    alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 ||
1680	    alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00))
1681		goto error;
1682
1683	reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6);
1684	if (reg_val == -1)
1685		goto error;
1686	if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd))
1687		goto error;
1688
1689	if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64))
1690		goto error;
1691
1692	/* enter absolute mode */
1693	reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4);
1694	if (reg_val == -1)
1695		goto error;
1696	if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02))
1697		goto error;
1698
1699	alps_exit_command_mode(psmouse);
1700	return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
1701
1702error:
1703	alps_exit_command_mode(psmouse);
1704	return ret;
1705}
1706
1707/* Must be in command mode when calling this function */
1708static int alps_absolute_mode_v4(struct psmouse *psmouse)
1709{
1710	int reg_val;
1711
1712	reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
1713	if (reg_val == -1)
1714		return -1;
1715
1716	reg_val |= 0x02;
1717	if (__alps_command_mode_write_reg(psmouse, reg_val))
1718		return -1;
1719
1720	return 0;
1721}
1722
1723static int alps_hw_init_v4(struct psmouse *psmouse)
1724{
1725	struct ps2dev *ps2dev = &psmouse->ps2dev;
1726	unsigned char param[4];
1727
1728	if (alps_enter_command_mode(psmouse))
1729		goto error;
1730
1731	if (alps_absolute_mode_v4(psmouse)) {
1732		psmouse_err(psmouse, "Failed to enter absolute mode\n");
1733		goto error;
1734	}
1735
1736	if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c))
1737		goto error;
1738
1739	if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03))
1740		goto error;
1741
1742	if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03))
1743		goto error;
1744
1745	if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15))
1746		goto error;
1747
1748	if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01))
1749		goto error;
1750
1751	if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03))
1752		goto error;
1753
1754	if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03))
1755		goto error;
1756
1757	if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03))
1758		goto error;
1759
1760	alps_exit_command_mode(psmouse);
1761
1762	/*
1763	 * This sequence changes the output from a 9-byte to an
1764	 * 8-byte format. All the same data seems to be present,
1765	 * just in a more compact format.
1766	 */
1767	param[0] = 0xc8;
1768	param[1] = 0x64;
1769	param[2] = 0x50;
1770	if (ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
1771	    ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE) ||
1772	    ps2_command(ps2dev, &param[2], PSMOUSE_CMD_SETRATE) ||
1773	    ps2_command(ps2dev, param, PSMOUSE_CMD_GETID))
1774		return -1;
1775
1776	/* Set rate and enable data reporting */
1777	param[0] = 0x64;
1778	if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
1779	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
1780		psmouse_err(psmouse, "Failed to enable data reporting\n");
1781		return -1;
1782	}
1783
1784	return 0;
1785
1786error:
1787	/*
1788	 * Leaving the touchpad in command mode will essentially render
1789	 * it unusable until the machine reboots, so exit it here just
1790	 * to be safe
1791	 */
1792	alps_exit_command_mode(psmouse);
1793	return -1;
1794}
1795
1796static int alps_dolphin_get_device_area(struct psmouse *psmouse,
1797					struct alps_data *priv)
1798{
1799	struct ps2dev *ps2dev = &psmouse->ps2dev;
1800	unsigned char param[4] = {0};
1801	int num_x_electrode, num_y_electrode;
1802
1803	if (alps_enter_command_mode(psmouse))
1804		return -1;
1805
1806	param[0] = 0x0a;
1807	if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
1808	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
1809	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
1810	    ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
1811	    ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE))
1812		return -1;
1813
1814	if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
1815		return -1;
1816
1817	/*
1818	 * Dolphin's sensor line number is not fixed. It can be calculated
1819	 * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET.
1820	 * Further more, we can get device's x_max and y_max by multiplying
1821	 * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE.
1822	 *
1823	 * e.g. When we get register's sensor_x = 11 & sensor_y = 8,
1824	 *	real sensor line number X = 11 + 8 = 19, and
1825	 *	real sensor line number Y = 8 + 1 = 9.
1826	 *	So, x_max = (19 - 1) * 64 = 1152, and
1827	 *	    y_max = (9 - 1) * 64 = 512.
1828	 */
1829	num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F);
1830	num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F);
1831	priv->x_bits = num_x_electrode;
1832	priv->y_bits = num_y_electrode;
1833	priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE;
1834	priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE;
1835
1836	if (alps_exit_command_mode(psmouse))
1837		return -1;
1838
1839	return 0;
1840}
1841
1842static int alps_hw_init_dolphin_v1(struct psmouse *psmouse)
1843{
1844	struct ps2dev *ps2dev = &psmouse->ps2dev;
1845	unsigned char param[2];
1846
1847	/* This is dolphin "v1" as empirically defined by florin9doi */
1848	param[0] = 0x64;
1849	param[1] = 0x28;
1850
1851	if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
1852	    ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
1853	    ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE))
1854		return -1;
1855
1856	return 0;
1857}
1858
1859static void alps_set_defaults(struct alps_data *priv)
1860{
1861	priv->byte0 = 0x8f;
1862	priv->mask0 = 0x8f;
1863	priv->flags = ALPS_DUALPOINT;
1864
1865	priv->x_max = 2000;
1866	priv->y_max = 1400;
1867	priv->x_bits = 15;
1868	priv->y_bits = 11;
1869
1870	switch (priv->proto_version) {
1871	case ALPS_PROTO_V1:
1872	case ALPS_PROTO_V2:
1873		priv->hw_init = alps_hw_init_v1_v2;
1874		priv->process_packet = alps_process_packet_v1_v2;
1875		priv->set_abs_params = alps_set_abs_params_st;
1876		priv->x_max = 1023;
1877		priv->y_max = 767;
1878		break;
1879	case ALPS_PROTO_V3:
1880		priv->hw_init = alps_hw_init_v3;
1881		priv->process_packet = alps_process_packet_v3;
1882		priv->set_abs_params = alps_set_abs_params_mt;
1883		priv->decode_fields = alps_decode_pinnacle;
1884		priv->nibble_commands = alps_v3_nibble_commands;
1885		priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
1886		break;
1887	case ALPS_PROTO_V4:
1888		priv->hw_init = alps_hw_init_v4;
1889		priv->process_packet = alps_process_packet_v4;
1890		priv->set_abs_params = alps_set_abs_params_mt;
1891		priv->nibble_commands = alps_v4_nibble_commands;
1892		priv->addr_command = PSMOUSE_CMD_DISABLE;
1893		break;
1894	case ALPS_PROTO_V5:
1895		priv->hw_init = alps_hw_init_dolphin_v1;
1896		priv->process_packet = alps_process_touchpad_packet_v3_v5;
1897		priv->decode_fields = alps_decode_dolphin;
1898		priv->set_abs_params = alps_set_abs_params_mt;
1899		priv->nibble_commands = alps_v3_nibble_commands;
1900		priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
1901		priv->byte0 = 0xc8;
1902		priv->mask0 = 0xd8;
1903		priv->flags = 0;
1904		priv->x_max = 1360;
1905		priv->y_max = 660;
1906		priv->x_bits = 23;
1907		priv->y_bits = 12;
1908		break;
1909	case ALPS_PROTO_V6:
1910		priv->hw_init = alps_hw_init_v6;
1911		priv->process_packet = alps_process_packet_v6;
1912		priv->set_abs_params = alps_set_abs_params_st;
1913		priv->nibble_commands = alps_v6_nibble_commands;
1914		priv->x_max = 2047;
1915		priv->y_max = 1535;
1916		break;
1917	}
1918}
1919
1920static int alps_match_table(struct psmouse *psmouse, struct alps_data *priv,
1921			    unsigned char *e7, unsigned char *ec)
1922{
1923	const struct alps_model_info *model;
1924	int i;
1925
1926	for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) {
1927		model = &alps_model_data[i];
1928
1929		if (!memcmp(e7, model->signature, sizeof(model->signature)) &&
1930		    (!model->command_mode_resp ||
1931		     model->command_mode_resp == ec[2])) {
1932
1933			priv->proto_version = model->proto_version;
1934			alps_set_defaults(priv);
1935
1936			priv->flags = model->flags;
1937			priv->byte0 = model->byte0;
1938			priv->mask0 = model->mask0;
1939
1940			return 0;
1941		}
1942	}
1943
1944	return -EINVAL;
1945}
1946
1947static int alps_identify(struct psmouse *psmouse, struct alps_data *priv)
1948{
1949	unsigned char e6[4], e7[4], ec[4];
1950
1951	/*
1952	 * First try "E6 report".
1953	 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed.
1954	 * The bits 0-2 of the first byte will be 1s if some buttons are
1955	 * pressed.
1956	 */
1957	if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
1958			 PSMOUSE_CMD_SETSCALE11, e6))
1959		return -EIO;
1960
1961	if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100))
1962		return -EINVAL;
1963
1964	/*
1965	 * Now get the "E7" and "EC" reports.  These will uniquely identify
1966	 * most ALPS touchpads.
1967	 */
1968	if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
1969			 PSMOUSE_CMD_SETSCALE21, e7) ||
1970	    alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
1971			 PSMOUSE_CMD_RESET_WRAP, ec) ||
1972	    alps_exit_command_mode(psmouse))
1973		return -EIO;
1974
1975	if (alps_match_table(psmouse, priv, e7, ec) == 0) {
1976		return 0;
1977	} else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 &&
1978		   ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) {
1979		priv->proto_version = ALPS_PROTO_V5;
1980		alps_set_defaults(priv);
1981		if (alps_dolphin_get_device_area(psmouse, priv))
1982			return -EIO;
1983		else
1984			return 0;
1985	} else if (ec[0] == 0x88 && ec[1] == 0x08) {
1986		priv->proto_version = ALPS_PROTO_V3;
1987		alps_set_defaults(priv);
1988
1989		priv->hw_init = alps_hw_init_rushmore_v3;
1990		priv->decode_fields = alps_decode_rushmore;
1991		priv->x_bits = 16;
1992		priv->y_bits = 12;
1993
1994		/* hack to make addr_command, nibble_command available */
1995		psmouse->private = priv;
1996
1997		if (alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_RUSHMORE))
1998			priv->flags &= ~ALPS_DUALPOINT;
1999
2000		return 0;
2001	} else if (ec[0] == 0x88 && ec[1] == 0x07 &&
2002		   ec[2] >= 0x90 && ec[2] <= 0x9d) {
2003		priv->proto_version = ALPS_PROTO_V3;
2004		alps_set_defaults(priv);
2005
2006		return 0;
2007	}
2008
2009	psmouse_info(psmouse,
2010		     "Unknown ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec);
2011
2012	return -EINVAL;
2013}
2014
2015static int alps_reconnect(struct psmouse *psmouse)
2016{
2017	struct alps_data *priv = psmouse->private;
2018
2019	psmouse_reset(psmouse);
2020
2021	if (alps_identify(psmouse, priv) < 0)
 
2022		return -1;
2023
2024	return priv->hw_init(psmouse);
2025}
2026
2027static void alps_disconnect(struct psmouse *psmouse)
2028{
2029	struct alps_data *priv = psmouse->private;
2030
2031	psmouse_reset(psmouse);
2032	del_timer_sync(&priv->timer);
2033	input_unregister_device(priv->dev2);
2034	kfree(priv);
2035}
2036
2037static void alps_set_abs_params_st(struct alps_data *priv,
2038				   struct input_dev *dev1)
2039{
2040	input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0);
2041	input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0);
2042}
2043
2044static void alps_set_abs_params_mt(struct alps_data *priv,
2045				   struct input_dev *dev1)
2046{
2047	set_bit(INPUT_PROP_SEMI_MT, dev1->propbit);
2048	input_mt_init_slots(dev1, 2, 0);
2049	input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0);
2050	input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0);
2051
2052	set_bit(BTN_TOOL_DOUBLETAP, dev1->keybit);
2053	set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit);
2054	set_bit(BTN_TOOL_QUADTAP, dev1->keybit);
2055
2056	input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0);
2057	input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0);
2058}
2059
2060int alps_init(struct psmouse *psmouse)
2061{
2062	struct alps_data *priv;
 
2063	struct input_dev *dev1 = psmouse->dev, *dev2;
 
2064
2065	priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL);
2066	dev2 = input_allocate_device();
2067	if (!priv || !dev2)
2068		goto init_fail;
2069
2070	priv->dev2 = dev2;
2071	setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse);
2072
2073	psmouse->private = priv;
2074
2075	psmouse_reset(psmouse);
2076
2077	if (alps_identify(psmouse, priv) < 0)
2078		goto init_fail;
2079
2080	if (priv->hw_init(psmouse))
 
 
2081		goto init_fail;
2082
2083	/*
2084	 * Undo part of setup done for us by psmouse core since touchpad
2085	 * is not a relative device.
2086	 */
2087	__clear_bit(EV_REL, dev1->evbit);
2088	__clear_bit(REL_X, dev1->relbit);
2089	__clear_bit(REL_Y, dev1->relbit);
2090
2091	/*
2092	 * Now set up our capabilities.
2093	 */
2094	dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY);
2095	dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH);
2096	dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER);
2097	dev1->keybit[BIT_WORD(BTN_LEFT)] |=
2098		BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
2099
2100	dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS);
2101
2102	priv->set_abs_params(priv, dev1);
2103	input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
2104
2105	if (priv->flags & ALPS_WHEEL) {
2106		dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL);
2107		dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL);
2108	}
2109
2110	if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
2111		dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD);
2112		dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK);
2113	}
2114
2115	if (priv->flags & ALPS_FOUR_BUTTONS) {
2116		dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0);
2117		dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1);
2118		dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2);
2119		dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3);
2120	} else {
2121		dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE);
2122	}
2123
2124	snprintf(priv->phys, sizeof(priv->phys), "%s/input1", psmouse->ps2dev.serio->phys);
2125	dev2->phys = priv->phys;
2126	dev2->name = (priv->flags & ALPS_DUALPOINT) ?
2127		     "DualPoint Stick" : "ALPS PS/2 Device";
2128	dev2->id.bustype = BUS_I8042;
2129	dev2->id.vendor  = 0x0002;
2130	dev2->id.product = PSMOUSE_ALPS;
2131	dev2->id.version = 0x0000;
2132	dev2->dev.parent = &psmouse->ps2dev.serio->dev;
2133
2134	dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
2135	dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
2136	dev2->keybit[BIT_WORD(BTN_LEFT)] =
2137		BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
2138
2139	if (input_register_device(priv->dev2))
2140		goto init_fail;
2141
2142	psmouse->protocol_handler = alps_process_byte;
2143	psmouse->poll = alps_poll;
2144	psmouse->disconnect = alps_disconnect;
2145	psmouse->reconnect = alps_reconnect;
2146	psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6;
2147
2148	/* We are having trouble resyncing ALPS touchpads so disable it for now */
2149	psmouse->resync_time = 0;
2150
2151	return 0;
2152
2153init_fail:
2154	psmouse_reset(psmouse);
2155	input_free_device(dev2);
2156	kfree(priv);
2157	psmouse->private = NULL;
2158	return -1;
2159}
2160
2161int alps_detect(struct psmouse *psmouse, bool set_properties)
2162{
2163	struct alps_data dummy;
 
2164
2165	if (alps_identify(psmouse, &dummy) < 0)
 
2166		return -1;
2167
2168	if (set_properties) {
2169		psmouse->vendor = "ALPS";
2170		psmouse->name = dummy.flags & ALPS_DUALPOINT ?
2171				"DualPoint TouchPad" : "GlidePoint";
2172		psmouse->model = dummy.proto_version << 8;
2173	}
2174	return 0;
2175}
2176
v3.1
  1/*
  2 * ALPS touchpad PS/2 mouse driver
  3 *
  4 * Copyright (c) 2003 Neil Brown <neilb@cse.unsw.edu.au>
  5 * Copyright (c) 2003-2005 Peter Osterlund <petero2@telia.com>
  6 * Copyright (c) 2004 Dmitry Torokhov <dtor@mail.ru>
  7 * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
  8 * Copyright (c) 2009 Sebastian Kapfer <sebastian_kapfer@gmx.net>
  9 *
 10 * ALPS detection, tap switching and status querying info is taken from
 11 * tpconfig utility (by C. Scott Ananian and Bruce Kall).
 12 *
 13 * This program is free software; you can redistribute it and/or modify it
 14 * under the terms of the GNU General Public License version 2 as published by
 15 * the Free Software Foundation.
 16 */
 17
 18#include <linux/slab.h>
 19#include <linux/input.h>
 
 20#include <linux/serio.h>
 21#include <linux/libps2.h>
 22
 23#include "psmouse.h"
 24#include "alps.h"
 25
 26#undef DEBUG
 27#ifdef DEBUG
 28#define dbg(format, arg...) printk(KERN_INFO "alps.c: " format "\n", ## arg)
 29#else
 30#define dbg(format, arg...) do {} while (0)
 31#endif
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 32
 33#define ALPS_OLDPROTO		0x01	/* old style input */
 34#define ALPS_DUALPOINT		0x02	/* touchpad has trackstick */
 35#define ALPS_PASS		0x04	/* device has a pass-through port */
 36
 37#define ALPS_WHEEL		0x08	/* hardware wheel present */
 38#define ALPS_FW_BK_1		0x10	/* front & back buttons present */
 39#define ALPS_FW_BK_2		0x20	/* front & back buttons present */
 40#define ALPS_FOUR_BUTTONS	0x40	/* 4 direction button present */
 41#define ALPS_PS2_INTERLEAVED	0x80	/* 3-byte PS/2 packet interleaved with
 42					   6-byte ALPS packet */
 43
 44static const struct alps_model_info alps_model_data[] = {
 45	{ { 0x32, 0x02, 0x14 },	0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Toshiba Salellite Pro M10 */
 46	{ { 0x33, 0x02, 0x0a },	0x88, 0xf8, ALPS_OLDPROTO },		  /* UMAX-530T */
 47	{ { 0x53, 0x02, 0x0a },	0xf8, 0xf8, 0 },
 48	{ { 0x53, 0x02, 0x14 },	0xf8, 0xf8, 0 },
 49	{ { 0x60, 0x03, 0xc8 }, 0xf8, 0xf8, 0 },			  /* HP ze1115 */
 50	{ { 0x63, 0x02, 0x0a },	0xf8, 0xf8, 0 },
 51	{ { 0x63, 0x02, 0x14 },	0xf8, 0xf8, 0 },
 52	{ { 0x63, 0x02, 0x28 },	0xf8, 0xf8, ALPS_FW_BK_2 },		  /* Fujitsu Siemens S6010 */
 53	{ { 0x63, 0x02, 0x3c },	0x8f, 0x8f, ALPS_WHEEL },		  /* Toshiba Satellite S2400-103 */
 54	{ { 0x63, 0x02, 0x50 },	0xef, 0xef, ALPS_FW_BK_1 },		  /* NEC Versa L320 */
 55	{ { 0x63, 0x02, 0x64 },	0xf8, 0xf8, 0 },
 56	{ { 0x63, 0x03, 0xc8 }, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D800 */
 57	{ { 0x73, 0x00, 0x0a },	0xf8, 0xf8, ALPS_DUALPOINT },		  /* ThinkPad R61 8918-5QG */
 58	{ { 0x73, 0x02, 0x0a },	0xf8, 0xf8, 0 },
 59	{ { 0x73, 0x02, 0x14 },	0xf8, 0xf8, ALPS_FW_BK_2 },		  /* Ahtec Laptop */
 60	{ { 0x20, 0x02, 0x0e },	0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* XXX */
 61	{ { 0x22, 0x02, 0x0a },	0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT },
 62	{ { 0x22, 0x02, 0x14 }, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D600 */
 63	/* Dell Latitude E5500, E6400, E6500, Precision M4400 */
 64	{ { 0x62, 0x02, 0x14 }, 0xcf, 0xcf,
 65		ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED },
 66	{ { 0x73, 0x02, 0x50 }, 0xcf, 0xcf, ALPS_FOUR_BUTTONS },	  /* Dell Vostro 1400 */
 67	{ { 0x52, 0x01, 0x14 }, 0xff, 0xff,
 68		ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED },	  /* Toshiba Tecra A11-11L */
 
 
 69};
 70
 
 
 
 
 
 71/*
 72 * XXX - this entry is suspicious. First byte has zero lower nibble,
 73 * which is what a normal mouse would report. Also, the value 0x0e
 74 * isn't valid per PS/2 spec.
 75 */
 76
 77/*
 78 * PS/2 packet format
 79 *
 80 * byte 0:  0    0 YSGN XSGN    1    M    R    L
 81 * byte 1: X7   X6   X5   X4   X3   X2   X1   X0
 82 * byte 2: Y7   Y6   Y5   Y4   Y3   Y2   Y1   Y0
 83 *
 84 * Note that the device never signals overflow condition.
 85 *
 86 * ALPS absolute Mode - new format
 87 *
 88 * byte 0:  1    ?    ?    ?    1    ?    ?    ?
 89 * byte 1:  0   x6   x5   x4   x3   x2   x1   x0
 90 * byte 2:  0  x10   x9   x8   x7    ?  fin  ges
 91 * byte 3:  0   y9   y8   y7    1    M    R    L
 92 * byte 4:  0   y6   y5   y4   y3   y2   y1   y0
 93 * byte 5:  0   z6   z5   z4   z3   z2   z1   z0
 94 *
 95 * Dualpoint device -- interleaved packet format
 96 *
 97 * byte 0:    1    1    0    0    1    1    1    1
 98 * byte 1:    0   x6   x5   x4   x3   x2   x1   x0
 99 * byte 2:    0  x10   x9   x8   x7    0  fin  ges
100 * byte 3:    0    0 YSGN XSGN    1    1    1    1
101 * byte 4:   X7   X6   X5   X4   X3   X2   X1   X0
102 * byte 5:   Y7   Y6   Y5   Y4   Y3   Y2   Y1   Y0
103 * byte 6:    0   y9   y8   y7    1    m    r    l
104 * byte 7:    0   y6   y5   y4   y3   y2   y1   y0
105 * byte 8:    0   z6   z5   z4   z3   z2   z1   z0
106 *
107 * CAPITALS = stick, miniscules = touchpad
108 *
109 * ?'s can have different meanings on different models,
110 * such as wheel rotation, extra buttons, stick buttons
111 * on a dualpoint, etc.
112 */
113
114static bool alps_is_valid_first_byte(const struct alps_model_info *model,
115				     unsigned char data)
116{
117	return (data & model->mask0) == model->byte0;
118}
119
120static void alps_report_buttons(struct psmouse *psmouse,
121				struct input_dev *dev1, struct input_dev *dev2,
122				int left, int right, int middle)
123{
124	struct input_dev *dev;
125
126	/*
127	 * If shared button has already been reported on the
128	 * other device (dev2) then this event should be also
129	 * sent through that device.
130	 */
131	dev = test_bit(BTN_LEFT, dev2->key) ? dev2 : dev1;
132	input_report_key(dev, BTN_LEFT, left);
133
134	dev = test_bit(BTN_RIGHT, dev2->key) ? dev2 : dev1;
135	input_report_key(dev, BTN_RIGHT, right);
136
137	dev = test_bit(BTN_MIDDLE, dev2->key) ? dev2 : dev1;
138	input_report_key(dev, BTN_MIDDLE, middle);
139
140	/*
141	 * Sync the _other_ device now, we'll do the first
142	 * device later once we report the rest of the events.
143	 */
144	input_sync(dev2);
145}
146
147static void alps_process_packet(struct psmouse *psmouse)
148{
149	struct alps_data *priv = psmouse->private;
150	const struct alps_model_info *model = priv->i;
151	unsigned char *packet = psmouse->packet;
152	struct input_dev *dev = psmouse->dev;
153	struct input_dev *dev2 = priv->dev2;
154	int x, y, z, ges, fin, left, right, middle;
155	int back = 0, forward = 0;
156
157	if (model->flags & ALPS_OLDPROTO) {
158		left = packet[2] & 0x10;
159		right = packet[2] & 0x08;
160		middle = 0;
161		x = packet[1] | ((packet[0] & 0x07) << 7);
162		y = packet[4] | ((packet[3] & 0x07) << 7);
163		z = packet[5];
164	} else {
165		left = packet[3] & 1;
166		right = packet[3] & 2;
167		middle = packet[3] & 4;
168		x = packet[1] | ((packet[2] & 0x78) << (7 - 3));
169		y = packet[4] | ((packet[3] & 0x70) << (7 - 4));
170		z = packet[5];
171	}
172
173	if (model->flags & ALPS_FW_BK_1) {
174		back = packet[0] & 0x10;
175		forward = packet[2] & 4;
176	}
177
178	if (model->flags & ALPS_FW_BK_2) {
179		back = packet[3] & 4;
180		forward = packet[2] & 4;
181		if ((middle = forward && back))
182			forward = back = 0;
183	}
184
185	ges = packet[2] & 1;
186	fin = packet[2] & 2;
187
188	if ((model->flags & ALPS_DUALPOINT) && z == 127) {
189		input_report_rel(dev2, REL_X,  (x > 383 ? (x - 768) : x));
190		input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y));
191
192		alps_report_buttons(psmouse, dev2, dev, left, right, middle);
193
194		input_sync(dev2);
195		return;
196	}
197
198	alps_report_buttons(psmouse, dev, dev2, left, right, middle);
199
200	/* Convert hardware tap to a reasonable Z value */
201	if (ges && !fin)
202		z = 40;
203
204	/*
205	 * A "tap and drag" operation is reported by the hardware as a transition
206	 * from (!fin && ges) to (fin && ges). This should be translated to the
207	 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually.
208	 */
209	if (ges && fin && !priv->prev_fin) {
210		input_report_abs(dev, ABS_X, x);
211		input_report_abs(dev, ABS_Y, y);
212		input_report_abs(dev, ABS_PRESSURE, 0);
213		input_report_key(dev, BTN_TOOL_FINGER, 0);
214		input_sync(dev);
215	}
216	priv->prev_fin = fin;
217
218	if (z > 30)
219		input_report_key(dev, BTN_TOUCH, 1);
220	if (z < 25)
221		input_report_key(dev, BTN_TOUCH, 0);
222
223	if (z > 0) {
224		input_report_abs(dev, ABS_X, x);
225		input_report_abs(dev, ABS_Y, y);
226	}
227
228	input_report_abs(dev, ABS_PRESSURE, z);
229	input_report_key(dev, BTN_TOOL_FINGER, z > 0);
230
231	if (model->flags & ALPS_WHEEL)
232		input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07));
233
234	if (model->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
235		input_report_key(dev, BTN_FORWARD, forward);
236		input_report_key(dev, BTN_BACK, back);
237	}
238
239	if (model->flags & ALPS_FOUR_BUTTONS) {
240		input_report_key(dev, BTN_0, packet[2] & 4);
241		input_report_key(dev, BTN_1, packet[0] & 0x10);
242		input_report_key(dev, BTN_2, packet[3] & 4);
243		input_report_key(dev, BTN_3, packet[0] & 0x20);
244	}
245
246	input_sync(dev);
247}
248
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
249static void alps_report_bare_ps2_packet(struct psmouse *psmouse,
250					unsigned char packet[],
251					bool report_buttons)
252{
253	struct alps_data *priv = psmouse->private;
254	struct input_dev *dev2 = priv->dev2;
255
256	if (report_buttons)
257		alps_report_buttons(psmouse, dev2, psmouse->dev,
258				packet[0] & 1, packet[0] & 2, packet[0] & 4);
259
260	input_report_rel(dev2, REL_X,
261		packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0);
262	input_report_rel(dev2, REL_Y,
263		packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0);
264
265	input_sync(dev2);
266}
267
268static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse)
269{
270	struct alps_data *priv = psmouse->private;
271
272	if (psmouse->pktcnt < 6)
273		return PSMOUSE_GOOD_DATA;
274
275	if (psmouse->pktcnt == 6) {
276		/*
277		 * Start a timer to flush the packet if it ends up last
278		 * 6-byte packet in the stream. Timer needs to fire
279		 * psmouse core times out itself. 20 ms should be enough
280		 * to decide if we are getting more data or not.
281		 */
282		mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20));
283		return PSMOUSE_GOOD_DATA;
284	}
285
286	del_timer(&priv->timer);
287
288	if (psmouse->packet[6] & 0x80) {
289
290		/*
291		 * Highest bit is set - that means we either had
292		 * complete ALPS packet and this is start of the
293		 * next packet or we got garbage.
294		 */
295
296		if (((psmouse->packet[3] |
297		      psmouse->packet[4] |
298		      psmouse->packet[5]) & 0x80) ||
299		    (!alps_is_valid_first_byte(priv->i, psmouse->packet[6]))) {
300			dbg("refusing packet %x %x %x %x "
301			    "(suspected interleaved ps/2)\n",
302			    psmouse->packet[3], psmouse->packet[4],
303			    psmouse->packet[5], psmouse->packet[6]);
304			return PSMOUSE_BAD_DATA;
305		}
306
307		alps_process_packet(psmouse);
308
309		/* Continue with the next packet */
310		psmouse->packet[0] = psmouse->packet[6];
311		psmouse->pktcnt = 1;
312
313	} else {
314
315		/*
316		 * High bit is 0 - that means that we indeed got a PS/2
317		 * packet in the middle of ALPS packet.
318		 *
319		 * There is also possibility that we got 6-byte ALPS
320		 * packet followed  by 3-byte packet from trackpoint. We
321		 * can not distinguish between these 2 scenarios but
322		 * becase the latter is unlikely to happen in course of
323		 * normal operation (user would need to press all
324		 * buttons on the pad and start moving trackpoint
325		 * without touching the pad surface) we assume former.
326		 * Even if we are wrong the wost thing that would happen
327		 * the cursor would jump but we should not get protocol
328		 * desynchronization.
329		 */
330
331		alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3],
332					    false);
333
334		/*
335		 * Continue with the standard ALPS protocol handling,
336		 * but make sure we won't process it as an interleaved
337		 * packet again, which may happen if all buttons are
338		 * pressed. To avoid this let's reset the 4th bit which
339		 * is normally 1.
340		 */
341		psmouse->packet[3] = psmouse->packet[6] & 0xf7;
342		psmouse->pktcnt = 4;
343	}
344
345	return PSMOUSE_GOOD_DATA;
346}
347
348static void alps_flush_packet(unsigned long data)
349{
350	struct psmouse *psmouse = (struct psmouse *)data;
 
351
352	serio_pause_rx(psmouse->ps2dev.serio);
353
354	if (psmouse->pktcnt == 6) {
355
356		/*
357		 * We did not any more data in reasonable amount of time.
358		 * Validate the last 3 bytes and process as a standard
359		 * ALPS packet.
360		 */
361		if ((psmouse->packet[3] |
362		     psmouse->packet[4] |
363		     psmouse->packet[5]) & 0x80) {
364			dbg("refusing packet %x %x %x "
365			    "(suspected interleaved ps/2)\n",
366			    psmouse->packet[3], psmouse->packet[4],
367			    psmouse->packet[5]);
368		} else {
369			alps_process_packet(psmouse);
370		}
371		psmouse->pktcnt = 0;
372	}
373
374	serio_continue_rx(psmouse->ps2dev.serio);
375}
376
377static psmouse_ret_t alps_process_byte(struct psmouse *psmouse)
378{
379	struct alps_data *priv = psmouse->private;
380	const struct alps_model_info *model = priv->i;
381
382	if ((psmouse->packet[0] & 0xc8) == 0x08) { /* PS/2 packet */
383		if (psmouse->pktcnt == 3) {
384			alps_report_bare_ps2_packet(psmouse, psmouse->packet,
385						    true);
386			return PSMOUSE_FULL_PACKET;
387		}
388		return PSMOUSE_GOOD_DATA;
389	}
390
391	/* Check for PS/2 packet stuffed in the middle of ALPS packet. */
392
393	if ((model->flags & ALPS_PS2_INTERLEAVED) &&
394	    psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) {
395		return alps_handle_interleaved_ps2(psmouse);
396	}
397
398	if (!alps_is_valid_first_byte(model, psmouse->packet[0])) {
399		dbg("refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n",
400		    psmouse->packet[0], model->mask0, model->byte0);
 
401		return PSMOUSE_BAD_DATA;
402	}
403
404	/* Bytes 2 - 6 should have 0 in the highest bit */
405	if (psmouse->pktcnt >= 2 && psmouse->pktcnt <= 6 &&
 
406	    (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) {
407		dbg("refusing packet[%i] = %x\n",
408		    psmouse->pktcnt - 1, psmouse->packet[psmouse->pktcnt - 1]);
 
409		return PSMOUSE_BAD_DATA;
410	}
411
412	if (psmouse->pktcnt == 6) {
413		alps_process_packet(psmouse);
414		return PSMOUSE_FULL_PACKET;
415	}
416
417	return PSMOUSE_GOOD_DATA;
418}
419
420static const struct alps_model_info *alps_get_model(struct psmouse *psmouse, int *version)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
421{
422	struct ps2dev *ps2dev = &psmouse->ps2dev;
423	static const unsigned char rates[] = { 0, 10, 20, 40, 60, 80, 100, 200 };
424	unsigned char param[4];
425	int i;
 
 
426
427	/*
428	 * First try "E6 report".
429	 * ALPS should return 0,0,10 or 0,0,100
 
430	 */
431	param[0] = 0;
432	if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES) ||
433	    ps2_command(ps2dev,  NULL, PSMOUSE_CMD_SETSCALE11) ||
434	    ps2_command(ps2dev,  NULL, PSMOUSE_CMD_SETSCALE11) ||
435	    ps2_command(ps2dev,  NULL, PSMOUSE_CMD_SETSCALE11))
436		return NULL;
 
 
 
 
 
 
437
438	param[0] = param[1] = param[2] = 0xff;
439	if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
440		return NULL;
 
 
 
 
 
441
442	dbg("E6 report: %2.2x %2.2x %2.2x", param[0], param[1], param[2]);
 
 
 
 
 
 
443
444	if (param[0] != 0 || param[1] != 0 || (param[2] != 10 && param[2] != 100))
445		return NULL;
 
 
446
447	/*
448	 * Now try "E7 report". Allowed responses are in
449	 * alps_model_data[].signature
450	 */
451	param[0] = 0;
452	if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES) ||
453	    ps2_command(ps2dev,  NULL, PSMOUSE_CMD_SETSCALE21) ||
454	    ps2_command(ps2dev,  NULL, PSMOUSE_CMD_SETSCALE21) ||
455	    ps2_command(ps2dev,  NULL, PSMOUSE_CMD_SETSCALE21))
456		return NULL;
 
 
457
458	param[0] = param[1] = param[2] = 0xff;
459	if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
460		return NULL;
461
462	dbg("E7 report: %2.2x %2.2x %2.2x", param[0], param[1], param[2]);
 
 
 
 
 
 
 
463
464	if (version) {
465		for (i = 0; i < ARRAY_SIZE(rates) && param[2] != rates[i]; i++)
466			/* empty */;
467		*version = (param[0] << 8) | (param[1] << 4) | i;
468	}
469
470	for (i = 0; i < ARRAY_SIZE(alps_model_data); i++)
471		if (!memcmp(param, alps_model_data[i].signature,
472			    sizeof(alps_model_data[i].signature)))
473			return alps_model_data + i;
 
 
 
 
474
475	return NULL;
 
 
 
 
 
476}
477
478/*
479 * For DualPoint devices select the device that should respond to
480 * subsequent commands. It looks like glidepad is behind stickpointer,
481 * I'd thought it would be other way around...
482 */
483static int alps_passthrough_mode(struct psmouse *psmouse, bool enable)
484{
485	struct ps2dev *ps2dev = &psmouse->ps2dev;
486	int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11;
487
488	if (ps2_command(ps2dev, NULL, cmd) ||
489	    ps2_command(ps2dev, NULL, cmd) ||
490	    ps2_command(ps2dev, NULL, cmd) ||
491	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
492		return -1;
493
494	/* we may get 3 more bytes, just ignore them */
495	ps2_drain(ps2dev, 3, 100);
496
497	return 0;
498}
499
500static int alps_absolute_mode(struct psmouse *psmouse)
501{
502	struct ps2dev *ps2dev = &psmouse->ps2dev;
503
504	/* Try ALPS magic knock - 4 disable before enable */
505	if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
506	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
507	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
508	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
509	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE))
510		return -1;
511
512	/*
513	 * Switch mouse to poll (remote) mode so motion data will not
514	 * get in our way
515	 */
516	return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL);
517}
518
519static int alps_get_status(struct psmouse *psmouse, char *param)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
520{
521	struct ps2dev *ps2dev = &psmouse->ps2dev;
522
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
523	/* Get status: 0xF5 0xF5 0xF5 0xE9 */
524	if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
525	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
526	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
527	    ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
528		return -1;
529
530	dbg("Status: %2.2x %2.2x %2.2x", param[0], param[1], param[2]);
531
532	return 0;
533}
534
535/*
536 * Turn touchpad tapping on or off. The sequences are:
537 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable,
538 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable.
539 * My guess that 0xE9 (GetInfo) is here as a sync point.
540 * For models that also have stickpointer (DualPoints) its tapping
541 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but
542 * we don't fiddle with it.
543 */
544static int alps_tap_mode(struct psmouse *psmouse, int enable)
545{
546	struct ps2dev *ps2dev = &psmouse->ps2dev;
547	int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES;
548	unsigned char tap_arg = enable ? 0x0A : 0x00;
549	unsigned char param[4];
550
551	if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) ||
552	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
553	    ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
554	    ps2_command(ps2dev, &tap_arg, cmd))
555		return -1;
556
557	if (alps_get_status(psmouse, param))
558		return -1;
559
560	return 0;
561}
562
563/*
564 * alps_poll() - poll the touchpad for current motion packet.
565 * Used in resync.
566 */
567static int alps_poll(struct psmouse *psmouse)
568{
569	struct alps_data *priv = psmouse->private;
570	unsigned char buf[6];
571	bool poll_failed;
572
573	if (priv->i->flags & ALPS_PASS)
574		alps_passthrough_mode(psmouse, true);
575
576	poll_failed = ps2_command(&psmouse->ps2dev, buf,
577				  PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0;
578
579	if (priv->i->flags & ALPS_PASS)
580		alps_passthrough_mode(psmouse, false);
581
582	if (poll_failed || (buf[0] & priv->i->mask0) != priv->i->byte0)
583		return -1;
584
585	if ((psmouse->badbyte & 0xc8) == 0x08) {
586/*
587 * Poll the track stick ...
588 */
589		if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8)))
590			return -1;
591	}
592
593	memcpy(psmouse->packet, buf, sizeof(buf));
594	return 0;
595}
596
597static int alps_hw_init(struct psmouse *psmouse)
598{
599	struct alps_data *priv = psmouse->private;
600	const struct alps_model_info *model = priv->i;
601
602	if ((model->flags & ALPS_PASS) &&
603	    alps_passthrough_mode(psmouse, true)) {
604		return -1;
605	}
606
607	if (alps_tap_mode(psmouse, true)) {
608		printk(KERN_WARNING "alps.c: Failed to enable hardware tapping\n");
609		return -1;
610	}
611
612	if (alps_absolute_mode(psmouse)) {
613		printk(KERN_ERR "alps.c: Failed to enable absolute mode\n");
614		return -1;
615	}
616
617	if ((model->flags & ALPS_PASS) &&
618	    alps_passthrough_mode(psmouse, false)) {
619		return -1;
620	}
621
622	/* ALPS needs stream mode, otherwise it won't report any data */
623	if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) {
624		printk(KERN_ERR "alps.c: Failed to enable stream mode\n");
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
625		return -1;
626	}
627
628	return 0;
629}
630
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
631static int alps_reconnect(struct psmouse *psmouse)
632{
633	const struct alps_model_info *model;
634
635	psmouse_reset(psmouse);
636
637	model = alps_get_model(psmouse, NULL);
638	if (!model)
639		return -1;
640
641	return alps_hw_init(psmouse);
642}
643
644static void alps_disconnect(struct psmouse *psmouse)
645{
646	struct alps_data *priv = psmouse->private;
647
648	psmouse_reset(psmouse);
649	del_timer_sync(&priv->timer);
650	input_unregister_device(priv->dev2);
651	kfree(priv);
652}
653
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
654int alps_init(struct psmouse *psmouse)
655{
656	struct alps_data *priv;
657	const struct alps_model_info *model;
658	struct input_dev *dev1 = psmouse->dev, *dev2;
659	int version;
660
661	priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL);
662	dev2 = input_allocate_device();
663	if (!priv || !dev2)
664		goto init_fail;
665
666	priv->dev2 = dev2;
667	setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse);
668
669	psmouse->private = priv;
670
671	model = alps_get_model(psmouse, &version);
672	if (!model)
 
673		goto init_fail;
674
675	priv->i = model;
676
677	if (alps_hw_init(psmouse))
678		goto init_fail;
679
680	/*
681	 * Undo part of setup done for us by psmouse core since touchpad
682	 * is not a relative device.
683	 */
684	__clear_bit(EV_REL, dev1->evbit);
685	__clear_bit(REL_X, dev1->relbit);
686	__clear_bit(REL_Y, dev1->relbit);
687
688	/*
689	 * Now set up our capabilities.
690	 */
691	dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY);
692	dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH);
693	dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER);
694	dev1->keybit[BIT_WORD(BTN_LEFT)] |=
695		BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
696
697	dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS);
698	input_set_abs_params(dev1, ABS_X, 0, 1023, 0, 0);
699	input_set_abs_params(dev1, ABS_Y, 0, 767, 0, 0);
700	input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
701
702	if (model->flags & ALPS_WHEEL) {
703		dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL);
704		dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL);
705	}
706
707	if (model->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
708		dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD);
709		dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK);
710	}
711
712	if (model->flags & ALPS_FOUR_BUTTONS) {
713		dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0);
714		dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1);
715		dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2);
716		dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3);
717	} else {
718		dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE);
719	}
720
721	snprintf(priv->phys, sizeof(priv->phys), "%s/input1", psmouse->ps2dev.serio->phys);
722	dev2->phys = priv->phys;
723	dev2->name = (model->flags & ALPS_DUALPOINT) ? "DualPoint Stick" : "PS/2 Mouse";
 
724	dev2->id.bustype = BUS_I8042;
725	dev2->id.vendor  = 0x0002;
726	dev2->id.product = PSMOUSE_ALPS;
727	dev2->id.version = 0x0000;
728	dev2->dev.parent = &psmouse->ps2dev.serio->dev;
729
730	dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
731	dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
732	dev2->keybit[BIT_WORD(BTN_LEFT)] =
733		BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
734
735	if (input_register_device(priv->dev2))
736		goto init_fail;
737
738	psmouse->protocol_handler = alps_process_byte;
739	psmouse->poll = alps_poll;
740	psmouse->disconnect = alps_disconnect;
741	psmouse->reconnect = alps_reconnect;
742	psmouse->pktsize = 6;
743
744	/* We are having trouble resyncing ALPS touchpads so disable it for now */
745	psmouse->resync_time = 0;
746
747	return 0;
748
749init_fail:
750	psmouse_reset(psmouse);
751	input_free_device(dev2);
752	kfree(priv);
753	psmouse->private = NULL;
754	return -1;
755}
756
757int alps_detect(struct psmouse *psmouse, bool set_properties)
758{
759	int version;
760	const struct alps_model_info *model;
761
762	model = alps_get_model(psmouse, &version);
763	if (!model)
764		return -1;
765
766	if (set_properties) {
767		psmouse->vendor = "ALPS";
768		psmouse->name = model->flags & ALPS_DUALPOINT ?
769				"DualPoint TouchPad" : "GlidePoint";
770		psmouse->model = version;
771	}
772	return 0;
773}
774