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#include <linux/dmi.h> 24 25#include "psmouse.h" 26#include "alps.h" 27 28/* 29 * Definitions for ALPS version 3 and 4 command mode protocol 30 */ 31#define ALPS_CMD_NIBBLE_10 0x01f2 32 33#define ALPS_REG_BASE_RUSHMORE 0xc2c0 34#define ALPS_REG_BASE_PINNACLE 0x0000 35 36static const struct alps_nibble_commands alps_v3_nibble_commands[] = { 37 { PSMOUSE_CMD_SETPOLL, 0x00 }, /* 0 */ 38 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */ 39 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */ 40 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */ 41 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */ 42 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */ 43 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */ 44 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */ 45 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */ 46 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */ 47 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */ 48 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */ 49 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */ 50 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */ 51 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */ 52 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 53}; 54 55static const struct alps_nibble_commands alps_v4_nibble_commands[] = { 56 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */ 57 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */ 58 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */ 59 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */ 60 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */ 61 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */ 62 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */ 63 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */ 64 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */ 65 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */ 66 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */ 67 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */ 68 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */ 69 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */ 70 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */ 71 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 72}; 73 74static const struct alps_nibble_commands alps_v6_nibble_commands[] = { 75 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */ 76 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 1 */ 77 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 2 */ 78 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 3 */ 79 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 4 */ 80 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 5 */ 81 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 6 */ 82 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 7 */ 83 { PSMOUSE_CMD_GETID, 0x00 }, /* 8 */ 84 { PSMOUSE_CMD_GETINFO, 0x00 }, /* 9 */ 85 { PSMOUSE_CMD_SETRES, 0x00 }, /* a */ 86 { PSMOUSE_CMD_SETRES, 0x01 }, /* b */ 87 { PSMOUSE_CMD_SETRES, 0x02 }, /* c */ 88 { PSMOUSE_CMD_SETRES, 0x03 }, /* d */ 89 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* e */ 90 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 91}; 92 93 94#define ALPS_DUALPOINT 0x02 /* touchpad has trackstick */ 95#define ALPS_PASS 0x04 /* device has a pass-through port */ 96 97#define ALPS_WHEEL 0x08 /* hardware wheel present */ 98#define ALPS_FW_BK_1 0x10 /* front & back buttons present */ 99#define ALPS_FW_BK_2 0x20 /* front & back buttons present */ 100#define ALPS_FOUR_BUTTONS 0x40 /* 4 direction button present */ 101#define ALPS_PS2_INTERLEAVED 0x80 /* 3-byte PS/2 packet interleaved with 102 6-byte ALPS packet */ 103#define ALPS_STICK_BITS 0x100 /* separate stick button bits */ 104#define ALPS_BUTTONPAD 0x200 /* device is a clickpad */ 105 106static const struct alps_model_info alps_model_data[] = { 107 { { 0x32, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Toshiba Salellite Pro M10 */ 108 { { 0x33, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V1, 0x88, 0xf8, 0 } }, /* UMAX-530T */ 109 { { 0x53, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 110 { { 0x53, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 111 { { 0x60, 0x03, 0xc8 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, /* HP ze1115 */ 112 { { 0x63, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 113 { { 0x63, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 114 { { 0x63, 0x02, 0x28 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Fujitsu Siemens S6010 */ 115 { { 0x63, 0x02, 0x3c }, 0x00, { ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL } }, /* Toshiba Satellite S2400-103 */ 116 { { 0x63, 0x02, 0x50 }, 0x00, { ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 } }, /* NEC Versa L320 */ 117 { { 0x63, 0x02, 0x64 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 118 { { 0x63, 0x03, 0xc8 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D800 */ 119 { { 0x73, 0x00, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT } }, /* ThinkPad R61 8918-5QG */ 120 { { 0x73, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 121 { { 0x73, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Ahtec Laptop */ 122 123 /* 124 * XXX This entry is suspicious. First byte has zero lower nibble, 125 * which is what a normal mouse would report. Also, the value 0x0e 126 * isn't valid per PS/2 spec. 127 */ 128 { { 0x20, 0x02, 0x0e }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, 129 130 { { 0x22, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, 131 { { 0x22, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D600 */ 132 /* Dell Latitude E5500, E6400, E6500, Precision M4400 */ 133 { { 0x62, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xcf, 0xcf, 134 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, 135 { { 0x73, 0x00, 0x14 }, 0x00, { ALPS_PROTO_V6, 0xff, 0xff, ALPS_DUALPOINT } }, /* Dell XT2 */ 136 { { 0x73, 0x02, 0x50 }, 0x00, { ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS } }, /* Dell Vostro 1400 */ 137 { { 0x52, 0x01, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff, 138 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, /* Toshiba Tecra A11-11L */ 139 { { 0x73, 0x02, 0x64 }, 0x8a, { ALPS_PROTO_V4, 0x8f, 0x8f, 0 } }, 140}; 141 142static const struct alps_protocol_info alps_v3_protocol_data = { 143 ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT 144}; 145 146static const struct alps_protocol_info alps_v3_rushmore_data = { 147 ALPS_PROTO_V3_RUSHMORE, 0x8f, 0x8f, ALPS_DUALPOINT 148}; 149 150static const struct alps_protocol_info alps_v5_protocol_data = { 151 ALPS_PROTO_V5, 0xc8, 0xd8, 0 152}; 153 154static const struct alps_protocol_info alps_v7_protocol_data = { 155 ALPS_PROTO_V7, 0x48, 0x48, ALPS_DUALPOINT 156}; 157 158static const struct alps_protocol_info alps_v8_protocol_data = { 159 ALPS_PROTO_V8, 0x18, 0x18, 0 160}; 161 162/* 163 * Some v2 models report the stick buttons in separate bits 164 */ 165static const struct dmi_system_id alps_dmi_has_separate_stick_buttons[] = { 166#if defined(CONFIG_DMI) && defined(CONFIG_X86) 167 { 168 /* Extrapolated from other entries */ 169 .matches = { 170 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 171 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D420"), 172 }, 173 }, 174 { 175 /* Reported-by: Hans de Bruin <jmdebruin@xmsnet.nl> */ 176 .matches = { 177 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 178 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D430"), 179 }, 180 }, 181 { 182 /* Reported-by: Hans de Goede <hdegoede@redhat.com> */ 183 .matches = { 184 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 185 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D620"), 186 }, 187 }, 188 { 189 /* Extrapolated from other entries */ 190 .matches = { 191 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 192 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D630"), 193 }, 194 }, 195#endif 196 { } 197}; 198 199static void alps_set_abs_params_st(struct alps_data *priv, 200 struct input_dev *dev1); 201static void alps_set_abs_params_semi_mt(struct alps_data *priv, 202 struct input_dev *dev1); 203static void alps_set_abs_params_v7(struct alps_data *priv, 204 struct input_dev *dev1); 205static void alps_set_abs_params_ss4_v2(struct alps_data *priv, 206 struct input_dev *dev1); 207 208/* Packet formats are described in Documentation/input/alps.txt */ 209 210static bool alps_is_valid_first_byte(struct alps_data *priv, 211 unsigned char data) 212{ 213 return (data & priv->mask0) == priv->byte0; 214} 215 216static void alps_report_buttons(struct input_dev *dev1, struct input_dev *dev2, 217 int left, int right, int middle) 218{ 219 struct input_dev *dev; 220 221 /* 222 * If shared button has already been reported on the 223 * other device (dev2) then this event should be also 224 * sent through that device. 225 */ 226 dev = (dev2 && test_bit(BTN_LEFT, dev2->key)) ? dev2 : dev1; 227 input_report_key(dev, BTN_LEFT, left); 228 229 dev = (dev2 && test_bit(BTN_RIGHT, dev2->key)) ? dev2 : dev1; 230 input_report_key(dev, BTN_RIGHT, right); 231 232 dev = (dev2 && test_bit(BTN_MIDDLE, dev2->key)) ? dev2 : dev1; 233 input_report_key(dev, BTN_MIDDLE, middle); 234 235 /* 236 * Sync the _other_ device now, we'll do the first 237 * device later once we report the rest of the events. 238 */ 239 if (dev2) 240 input_sync(dev2); 241} 242 243static void alps_process_packet_v1_v2(struct psmouse *psmouse) 244{ 245 struct alps_data *priv = psmouse->private; 246 unsigned char *packet = psmouse->packet; 247 struct input_dev *dev = psmouse->dev; 248 struct input_dev *dev2 = priv->dev2; 249 int x, y, z, ges, fin, left, right, middle; 250 int back = 0, forward = 0; 251 252 if (priv->proto_version == ALPS_PROTO_V1) { 253 left = packet[2] & 0x10; 254 right = packet[2] & 0x08; 255 middle = 0; 256 x = packet[1] | ((packet[0] & 0x07) << 7); 257 y = packet[4] | ((packet[3] & 0x07) << 7); 258 z = packet[5]; 259 } else { 260 left = packet[3] & 1; 261 right = packet[3] & 2; 262 middle = packet[3] & 4; 263 x = packet[1] | ((packet[2] & 0x78) << (7 - 3)); 264 y = packet[4] | ((packet[3] & 0x70) << (7 - 4)); 265 z = packet[5]; 266 } 267 268 if (priv->flags & ALPS_FW_BK_1) { 269 back = packet[0] & 0x10; 270 forward = packet[2] & 4; 271 } 272 273 if (priv->flags & ALPS_FW_BK_2) { 274 back = packet[3] & 4; 275 forward = packet[2] & 4; 276 if ((middle = forward && back)) 277 forward = back = 0; 278 } 279 280 ges = packet[2] & 1; 281 fin = packet[2] & 2; 282 283 if ((priv->flags & ALPS_DUALPOINT) && z == 127) { 284 input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x)); 285 input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y)); 286 287 alps_report_buttons(dev2, dev, left, right, middle); 288 289 input_sync(dev2); 290 return; 291 } 292 293 /* Some models have separate stick button bits */ 294 if (priv->flags & ALPS_STICK_BITS) { 295 left |= packet[0] & 1; 296 right |= packet[0] & 2; 297 middle |= packet[0] & 4; 298 } 299 300 alps_report_buttons(dev, dev2, left, right, middle); 301 302 /* Convert hardware tap to a reasonable Z value */ 303 if (ges && !fin) 304 z = 40; 305 306 /* 307 * A "tap and drag" operation is reported by the hardware as a transition 308 * from (!fin && ges) to (fin && ges). This should be translated to the 309 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually. 310 */ 311 if (ges && fin && !priv->prev_fin) { 312 input_report_abs(dev, ABS_X, x); 313 input_report_abs(dev, ABS_Y, y); 314 input_report_abs(dev, ABS_PRESSURE, 0); 315 input_report_key(dev, BTN_TOOL_FINGER, 0); 316 input_sync(dev); 317 } 318 priv->prev_fin = fin; 319 320 if (z > 30) 321 input_report_key(dev, BTN_TOUCH, 1); 322 if (z < 25) 323 input_report_key(dev, BTN_TOUCH, 0); 324 325 if (z > 0) { 326 input_report_abs(dev, ABS_X, x); 327 input_report_abs(dev, ABS_Y, y); 328 } 329 330 input_report_abs(dev, ABS_PRESSURE, z); 331 input_report_key(dev, BTN_TOOL_FINGER, z > 0); 332 333 if (priv->flags & ALPS_WHEEL) 334 input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07)); 335 336 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 337 input_report_key(dev, BTN_FORWARD, forward); 338 input_report_key(dev, BTN_BACK, back); 339 } 340 341 if (priv->flags & ALPS_FOUR_BUTTONS) { 342 input_report_key(dev, BTN_0, packet[2] & 4); 343 input_report_key(dev, BTN_1, packet[0] & 0x10); 344 input_report_key(dev, BTN_2, packet[3] & 4); 345 input_report_key(dev, BTN_3, packet[0] & 0x20); 346 } 347 348 input_sync(dev); 349} 350 351static void alps_get_bitmap_points(unsigned int map, 352 struct alps_bitmap_point *low, 353 struct alps_bitmap_point *high, 354 int *fingers) 355{ 356 struct alps_bitmap_point *point; 357 int i, bit, prev_bit = 0; 358 359 point = low; 360 for (i = 0; map != 0; i++, map >>= 1) { 361 bit = map & 1; 362 if (bit) { 363 if (!prev_bit) { 364 point->start_bit = i; 365 point->num_bits = 0; 366 (*fingers)++; 367 } 368 point->num_bits++; 369 } else { 370 if (prev_bit) 371 point = high; 372 } 373 prev_bit = bit; 374 } 375} 376 377/* 378 * Process bitmap data from semi-mt protocols. Returns the number of 379 * fingers detected. A return value of 0 means at least one of the 380 * bitmaps was empty. 381 * 382 * The bitmaps don't have enough data to track fingers, so this function 383 * only generates points representing a bounding box of all contacts. 384 * These points are returned in fields->mt when the return value 385 * is greater than 0. 386 */ 387static int alps_process_bitmap(struct alps_data *priv, 388 struct alps_fields *fields) 389{ 390 int i, fingers_x = 0, fingers_y = 0, fingers, closest; 391 struct alps_bitmap_point x_low = {0,}, x_high = {0,}; 392 struct alps_bitmap_point y_low = {0,}, y_high = {0,}; 393 struct input_mt_pos corner[4]; 394 395 if (!fields->x_map || !fields->y_map) 396 return 0; 397 398 alps_get_bitmap_points(fields->x_map, &x_low, &x_high, &fingers_x); 399 alps_get_bitmap_points(fields->y_map, &y_low, &y_high, &fingers_y); 400 401 /* 402 * Fingers can overlap, so we use the maximum count of fingers 403 * on either axis as the finger count. 404 */ 405 fingers = max(fingers_x, fingers_y); 406 407 /* 408 * If an axis reports only a single contact, we have overlapping or 409 * adjacent fingers. Divide the single contact between the two points. 410 */ 411 if (fingers_x == 1) { 412 i = (x_low.num_bits - 1) / 2; 413 x_low.num_bits = x_low.num_bits - i; 414 x_high.start_bit = x_low.start_bit + i; 415 x_high.num_bits = max(i, 1); 416 } 417 if (fingers_y == 1) { 418 i = (y_low.num_bits - 1) / 2; 419 y_low.num_bits = y_low.num_bits - i; 420 y_high.start_bit = y_low.start_bit + i; 421 y_high.num_bits = max(i, 1); 422 } 423 424 /* top-left corner */ 425 corner[0].x = 426 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) / 427 (2 * (priv->x_bits - 1)); 428 corner[0].y = 429 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) / 430 (2 * (priv->y_bits - 1)); 431 432 /* top-right corner */ 433 corner[1].x = 434 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) / 435 (2 * (priv->x_bits - 1)); 436 corner[1].y = 437 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) / 438 (2 * (priv->y_bits - 1)); 439 440 /* bottom-right corner */ 441 corner[2].x = 442 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) / 443 (2 * (priv->x_bits - 1)); 444 corner[2].y = 445 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) / 446 (2 * (priv->y_bits - 1)); 447 448 /* bottom-left corner */ 449 corner[3].x = 450 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) / 451 (2 * (priv->x_bits - 1)); 452 corner[3].y = 453 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) / 454 (2 * (priv->y_bits - 1)); 455 456 /* x-bitmap order is reversed on v5 touchpads */ 457 if (priv->proto_version == ALPS_PROTO_V5) { 458 for (i = 0; i < 4; i++) 459 corner[i].x = priv->x_max - corner[i].x; 460 } 461 462 /* y-bitmap order is reversed on v3 and v4 touchpads */ 463 if (priv->proto_version == ALPS_PROTO_V3 || 464 priv->proto_version == ALPS_PROTO_V4) { 465 for (i = 0; i < 4; i++) 466 corner[i].y = priv->y_max - corner[i].y; 467 } 468 469 /* 470 * We only select a corner for the second touch once per 2 finger 471 * touch sequence to avoid the chosen corner (and thus the coordinates) 472 * jumping around when the first touch is in the middle. 473 */ 474 if (priv->second_touch == -1) { 475 /* Find corner closest to our st coordinates */ 476 closest = 0x7fffffff; 477 for (i = 0; i < 4; i++) { 478 int dx = fields->st.x - corner[i].x; 479 int dy = fields->st.y - corner[i].y; 480 int distance = dx * dx + dy * dy; 481 482 if (distance < closest) { 483 priv->second_touch = i; 484 closest = distance; 485 } 486 } 487 /* And select the opposite corner to use for the 2nd touch */ 488 priv->second_touch = (priv->second_touch + 2) % 4; 489 } 490 491 fields->mt[0] = fields->st; 492 fields->mt[1] = corner[priv->second_touch]; 493 494 return fingers; 495} 496 497static void alps_set_slot(struct input_dev *dev, int slot, int x, int y) 498{ 499 input_mt_slot(dev, slot); 500 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); 501 input_report_abs(dev, ABS_MT_POSITION_X, x); 502 input_report_abs(dev, ABS_MT_POSITION_Y, y); 503} 504 505static void alps_report_mt_data(struct psmouse *psmouse, int n) 506{ 507 struct alps_data *priv = psmouse->private; 508 struct input_dev *dev = psmouse->dev; 509 struct alps_fields *f = &priv->f; 510 int i, slot[MAX_TOUCHES]; 511 512 input_mt_assign_slots(dev, slot, f->mt, n, 0); 513 for (i = 0; i < n; i++) 514 alps_set_slot(dev, slot[i], f->mt[i].x, f->mt[i].y); 515 516 input_mt_sync_frame(dev); 517} 518 519static void alps_report_semi_mt_data(struct psmouse *psmouse, int fingers) 520{ 521 struct alps_data *priv = psmouse->private; 522 struct input_dev *dev = psmouse->dev; 523 struct alps_fields *f = &priv->f; 524 525 /* Use st data when we don't have mt data */ 526 if (fingers < 2) { 527 f->mt[0].x = f->st.x; 528 f->mt[0].y = f->st.y; 529 fingers = f->pressure > 0 ? 1 : 0; 530 priv->second_touch = -1; 531 } 532 533 if (fingers >= 1) 534 alps_set_slot(dev, 0, f->mt[0].x, f->mt[0].y); 535 if (fingers >= 2) 536 alps_set_slot(dev, 1, f->mt[1].x, f->mt[1].y); 537 input_mt_sync_frame(dev); 538 539 input_mt_report_finger_count(dev, fingers); 540 541 input_report_key(dev, BTN_LEFT, f->left); 542 input_report_key(dev, BTN_RIGHT, f->right); 543 input_report_key(dev, BTN_MIDDLE, f->middle); 544 545 input_report_abs(dev, ABS_PRESSURE, f->pressure); 546 547 input_sync(dev); 548} 549 550static void alps_process_trackstick_packet_v3(struct psmouse *psmouse) 551{ 552 struct alps_data *priv = psmouse->private; 553 unsigned char *packet = psmouse->packet; 554 struct input_dev *dev = priv->dev2; 555 int x, y, z, left, right, middle; 556 557 /* It should be a DualPoint when received trackstick packet */ 558 if (!(priv->flags & ALPS_DUALPOINT)) { 559 psmouse_warn(psmouse, 560 "Rejected trackstick packet from non DualPoint device"); 561 return; 562 } 563 564 /* Sanity check packet */ 565 if (!(packet[0] & 0x40)) { 566 psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n"); 567 return; 568 } 569 570 /* 571 * There's a special packet that seems to indicate the end 572 * of a stream of trackstick data. Filter these out. 573 */ 574 if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f) 575 return; 576 577 x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f)); 578 y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f)); 579 z = (packet[4] & 0x7c) >> 2; 580 581 /* 582 * The x and y values tend to be quite large, and when used 583 * alone the trackstick is difficult to use. Scale them down 584 * to compensate. 585 */ 586 x /= 8; 587 y /= 8; 588 589 input_report_rel(dev, REL_X, x); 590 input_report_rel(dev, REL_Y, -y); 591 592 /* 593 * Most ALPS models report the trackstick buttons in the touchpad 594 * packets, but a few report them here. No reliable way has been 595 * found to differentiate between the models upfront, so we enable 596 * the quirk in response to seeing a button press in the trackstick 597 * packet. 598 */ 599 left = packet[3] & 0x01; 600 right = packet[3] & 0x02; 601 middle = packet[3] & 0x04; 602 603 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) && 604 (left || right || middle)) 605 priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS; 606 607 if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) { 608 input_report_key(dev, BTN_LEFT, left); 609 input_report_key(dev, BTN_RIGHT, right); 610 input_report_key(dev, BTN_MIDDLE, middle); 611 } 612 613 input_sync(dev); 614 return; 615} 616 617static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p) 618{ 619 f->left = !!(p[3] & 0x01); 620 f->right = !!(p[3] & 0x02); 621 f->middle = !!(p[3] & 0x04); 622 623 f->ts_left = !!(p[3] & 0x10); 624 f->ts_right = !!(p[3] & 0x20); 625 f->ts_middle = !!(p[3] & 0x40); 626} 627 628static int alps_decode_pinnacle(struct alps_fields *f, unsigned char *p, 629 struct psmouse *psmouse) 630{ 631 f->first_mp = !!(p[4] & 0x40); 632 f->is_mp = !!(p[0] & 0x40); 633 634 if (f->is_mp) { 635 f->fingers = (p[5] & 0x3) + 1; 636 f->x_map = ((p[4] & 0x7e) << 8) | 637 ((p[1] & 0x7f) << 2) | 638 ((p[0] & 0x30) >> 4); 639 f->y_map = ((p[3] & 0x70) << 4) | 640 ((p[2] & 0x7f) << 1) | 641 (p[4] & 0x01); 642 } else { 643 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | 644 ((p[0] & 0x30) >> 4); 645 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); 646 f->pressure = p[5] & 0x7f; 647 648 alps_decode_buttons_v3(f, p); 649 } 650 651 return 0; 652} 653 654static int alps_decode_rushmore(struct alps_fields *f, unsigned char *p, 655 struct psmouse *psmouse) 656{ 657 f->first_mp = !!(p[4] & 0x40); 658 f->is_mp = !!(p[5] & 0x40); 659 660 if (f->is_mp) { 661 f->fingers = max((p[5] & 0x3), ((p[5] >> 2) & 0x3)) + 1; 662 f->x_map = ((p[5] & 0x10) << 11) | 663 ((p[4] & 0x7e) << 8) | 664 ((p[1] & 0x7f) << 2) | 665 ((p[0] & 0x30) >> 4); 666 f->y_map = ((p[5] & 0x20) << 6) | 667 ((p[3] & 0x70) << 4) | 668 ((p[2] & 0x7f) << 1) | 669 (p[4] & 0x01); 670 } else { 671 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | 672 ((p[0] & 0x30) >> 4); 673 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); 674 f->pressure = p[5] & 0x7f; 675 676 alps_decode_buttons_v3(f, p); 677 } 678 679 return 0; 680} 681 682static int alps_decode_dolphin(struct alps_fields *f, unsigned char *p, 683 struct psmouse *psmouse) 684{ 685 u64 palm_data = 0; 686 struct alps_data *priv = psmouse->private; 687 688 f->first_mp = !!(p[0] & 0x02); 689 f->is_mp = !!(p[0] & 0x20); 690 691 if (!f->is_mp) { 692 f->st.x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7)); 693 f->st.y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3)); 694 f->pressure = (p[0] & 4) ? 0 : p[5] & 0x7f; 695 alps_decode_buttons_v3(f, p); 696 } else { 697 f->fingers = ((p[0] & 0x6) >> 1 | 698 (p[0] & 0x10) >> 2); 699 700 palm_data = (p[1] & 0x7f) | 701 ((p[2] & 0x7f) << 7) | 702 ((p[4] & 0x7f) << 14) | 703 ((p[5] & 0x7f) << 21) | 704 ((p[3] & 0x07) << 28) | 705 (((u64)p[3] & 0x70) << 27) | 706 (((u64)p[0] & 0x01) << 34); 707 708 /* Y-profile is stored in P(0) to p(n-1), n = y_bits; */ 709 f->y_map = palm_data & (BIT(priv->y_bits) - 1); 710 711 /* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */ 712 f->x_map = (palm_data >> priv->y_bits) & 713 (BIT(priv->x_bits) - 1); 714 } 715 716 return 0; 717} 718 719static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse) 720{ 721 struct alps_data *priv = psmouse->private; 722 unsigned char *packet = psmouse->packet; 723 struct input_dev *dev2 = priv->dev2; 724 struct alps_fields *f = &priv->f; 725 int fingers = 0; 726 727 memset(f, 0, sizeof(*f)); 728 729 priv->decode_fields(f, packet, psmouse); 730 731 /* 732 * There's no single feature of touchpad position and bitmap packets 733 * that can be used to distinguish between them. We rely on the fact 734 * that a bitmap packet should always follow a position packet with 735 * bit 6 of packet[4] set. 736 */ 737 if (priv->multi_packet) { 738 /* 739 * Sometimes a position packet will indicate a multi-packet 740 * sequence, but then what follows is another position 741 * packet. Check for this, and when it happens process the 742 * position packet as usual. 743 */ 744 if (f->is_mp) { 745 fingers = f->fingers; 746 /* 747 * Bitmap processing uses position packet's coordinate 748 * data, so we need to do decode it first. 749 */ 750 priv->decode_fields(f, priv->multi_data, psmouse); 751 if (alps_process_bitmap(priv, f) == 0) 752 fingers = 0; /* Use st data */ 753 } else { 754 priv->multi_packet = 0; 755 } 756 } 757 758 /* 759 * Bit 6 of byte 0 is not usually set in position packets. The only 760 * times it seems to be set is in situations where the data is 761 * suspect anyway, e.g. a palm resting flat on the touchpad. Given 762 * this combined with the fact that this bit is useful for filtering 763 * out misidentified bitmap packets, we reject anything with this 764 * bit set. 765 */ 766 if (f->is_mp) 767 return; 768 769 if (!priv->multi_packet && f->first_mp) { 770 priv->multi_packet = 1; 771 memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); 772 return; 773 } 774 775 priv->multi_packet = 0; 776 777 /* 778 * Sometimes the hardware sends a single packet with z = 0 779 * in the middle of a stream. Real releases generate packets 780 * with x, y, and z all zero, so these seem to be flukes. 781 * Ignore them. 782 */ 783 if (f->st.x && f->st.y && !f->pressure) 784 return; 785 786 alps_report_semi_mt_data(psmouse, fingers); 787 788 if ((priv->flags & ALPS_DUALPOINT) && 789 !(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) { 790 input_report_key(dev2, BTN_LEFT, f->ts_left); 791 input_report_key(dev2, BTN_RIGHT, f->ts_right); 792 input_report_key(dev2, BTN_MIDDLE, f->ts_middle); 793 input_sync(dev2); 794 } 795} 796 797static void alps_process_packet_v3(struct psmouse *psmouse) 798{ 799 unsigned char *packet = psmouse->packet; 800 801 /* 802 * v3 protocol packets come in three types, two representing 803 * touchpad data and one representing trackstick data. 804 * Trackstick packets seem to be distinguished by always 805 * having 0x3f in the last byte. This value has never been 806 * observed in the last byte of either of the other types 807 * of packets. 808 */ 809 if (packet[5] == 0x3f) { 810 alps_process_trackstick_packet_v3(psmouse); 811 return; 812 } 813 814 alps_process_touchpad_packet_v3_v5(psmouse); 815} 816 817static void alps_process_packet_v6(struct psmouse *psmouse) 818{ 819 struct alps_data *priv = psmouse->private; 820 unsigned char *packet = psmouse->packet; 821 struct input_dev *dev = psmouse->dev; 822 struct input_dev *dev2 = priv->dev2; 823 int x, y, z, left, right, middle; 824 825 /* 826 * We can use Byte5 to distinguish if the packet is from Touchpad 827 * or Trackpoint. 828 * Touchpad: 0 - 0x7E 829 * Trackpoint: 0x7F 830 */ 831 if (packet[5] == 0x7F) { 832 /* It should be a DualPoint when received Trackpoint packet */ 833 if (!(priv->flags & ALPS_DUALPOINT)) { 834 psmouse_warn(psmouse, 835 "Rejected trackstick packet from non DualPoint device"); 836 return; 837 } 838 839 /* Trackpoint packet */ 840 x = packet[1] | ((packet[3] & 0x20) << 2); 841 y = packet[2] | ((packet[3] & 0x40) << 1); 842 z = packet[4]; 843 left = packet[3] & 0x01; 844 right = packet[3] & 0x02; 845 middle = packet[3] & 0x04; 846 847 /* To prevent the cursor jump when finger lifted */ 848 if (x == 0x7F && y == 0x7F && z == 0x7F) 849 x = y = z = 0; 850 851 /* Divide 4 since trackpoint's speed is too fast */ 852 input_report_rel(dev2, REL_X, (char)x / 4); 853 input_report_rel(dev2, REL_Y, -((char)y / 4)); 854 855 input_report_key(dev2, BTN_LEFT, left); 856 input_report_key(dev2, BTN_RIGHT, right); 857 input_report_key(dev2, BTN_MIDDLE, middle); 858 859 input_sync(dev2); 860 return; 861 } 862 863 /* Touchpad packet */ 864 x = packet[1] | ((packet[3] & 0x78) << 4); 865 y = packet[2] | ((packet[4] & 0x78) << 4); 866 z = packet[5]; 867 left = packet[3] & 0x01; 868 right = packet[3] & 0x02; 869 870 if (z > 30) 871 input_report_key(dev, BTN_TOUCH, 1); 872 if (z < 25) 873 input_report_key(dev, BTN_TOUCH, 0); 874 875 if (z > 0) { 876 input_report_abs(dev, ABS_X, x); 877 input_report_abs(dev, ABS_Y, y); 878 } 879 880 input_report_abs(dev, ABS_PRESSURE, z); 881 input_report_key(dev, BTN_TOOL_FINGER, z > 0); 882 883 /* v6 touchpad does not have middle button */ 884 input_report_key(dev, BTN_LEFT, left); 885 input_report_key(dev, BTN_RIGHT, right); 886 887 input_sync(dev); 888} 889 890static void alps_process_packet_v4(struct psmouse *psmouse) 891{ 892 struct alps_data *priv = psmouse->private; 893 unsigned char *packet = psmouse->packet; 894 struct alps_fields *f = &priv->f; 895 int offset; 896 897 /* 898 * v4 has a 6-byte encoding for bitmap data, but this data is 899 * broken up between 3 normal packets. Use priv->multi_packet to 900 * track our position in the bitmap packet. 901 */ 902 if (packet[6] & 0x40) { 903 /* sync, reset position */ 904 priv->multi_packet = 0; 905 } 906 907 if (WARN_ON_ONCE(priv->multi_packet > 2)) 908 return; 909 910 offset = 2 * priv->multi_packet; 911 priv->multi_data[offset] = packet[6]; 912 priv->multi_data[offset + 1] = packet[7]; 913 914 f->left = !!(packet[4] & 0x01); 915 f->right = !!(packet[4] & 0x02); 916 917 f->st.x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) | 918 ((packet[0] & 0x30) >> 4); 919 f->st.y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f); 920 f->pressure = packet[5] & 0x7f; 921 922 if (++priv->multi_packet > 2) { 923 priv->multi_packet = 0; 924 925 f->x_map = ((priv->multi_data[2] & 0x1f) << 10) | 926 ((priv->multi_data[3] & 0x60) << 3) | 927 ((priv->multi_data[0] & 0x3f) << 2) | 928 ((priv->multi_data[1] & 0x60) >> 5); 929 f->y_map = ((priv->multi_data[5] & 0x01) << 10) | 930 ((priv->multi_data[3] & 0x1f) << 5) | 931 (priv->multi_data[1] & 0x1f); 932 933 f->fingers = alps_process_bitmap(priv, f); 934 } 935 936 alps_report_semi_mt_data(psmouse, f->fingers); 937} 938 939static bool alps_is_valid_package_v7(struct psmouse *psmouse) 940{ 941 switch (psmouse->pktcnt) { 942 case 3: 943 return (psmouse->packet[2] & 0x40) == 0x40; 944 case 4: 945 return (psmouse->packet[3] & 0x48) == 0x48; 946 case 6: 947 return (psmouse->packet[5] & 0x40) == 0x00; 948 } 949 return true; 950} 951 952static unsigned char alps_get_packet_id_v7(char *byte) 953{ 954 unsigned char packet_id; 955 956 if (byte[4] & 0x40) 957 packet_id = V7_PACKET_ID_TWO; 958 else if (byte[4] & 0x01) 959 packet_id = V7_PACKET_ID_MULTI; 960 else if ((byte[0] & 0x10) && !(byte[4] & 0x43)) 961 packet_id = V7_PACKET_ID_NEW; 962 else if (byte[1] == 0x00 && byte[4] == 0x00) 963 packet_id = V7_PACKET_ID_IDLE; 964 else 965 packet_id = V7_PACKET_ID_UNKNOWN; 966 967 return packet_id; 968} 969 970static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt, 971 unsigned char *pkt, 972 unsigned char pkt_id) 973{ 974 mt[0].x = ((pkt[2] & 0x80) << 4); 975 mt[0].x |= ((pkt[2] & 0x3F) << 5); 976 mt[0].x |= ((pkt[3] & 0x30) >> 1); 977 mt[0].x |= (pkt[3] & 0x07); 978 mt[0].y = (pkt[1] << 3) | (pkt[0] & 0x07); 979 980 mt[1].x = ((pkt[3] & 0x80) << 4); 981 mt[1].x |= ((pkt[4] & 0x80) << 3); 982 mt[1].x |= ((pkt[4] & 0x3F) << 4); 983 mt[1].y = ((pkt[5] & 0x80) << 3); 984 mt[1].y |= ((pkt[5] & 0x3F) << 4); 985 986 switch (pkt_id) { 987 case V7_PACKET_ID_TWO: 988 mt[1].x &= ~0x000F; 989 mt[1].y |= 0x000F; 990 /* Detect false-postive touches where x & y report max value */ 991 if (mt[1].y == 0x7ff && mt[1].x == 0xff0) { 992 mt[1].x = 0; 993 /* y gets set to 0 at the end of this function */ 994 } 995 break; 996 997 case V7_PACKET_ID_MULTI: 998 mt[1].x &= ~0x003F; 999 mt[1].y &= ~0x0020; 1000 mt[1].y |= ((pkt[4] & 0x02) << 4); 1001 mt[1].y |= 0x001F; 1002 break; 1003 1004 case V7_PACKET_ID_NEW: 1005 mt[1].x &= ~0x003F; 1006 mt[1].x |= (pkt[0] & 0x20); 1007 mt[1].y |= 0x000F; 1008 break; 1009 } 1010 1011 mt[0].y = 0x7FF - mt[0].y; 1012 mt[1].y = 0x7FF - mt[1].y; 1013} 1014 1015static int alps_get_mt_count(struct input_mt_pos *mt) 1016{ 1017 int i, fingers = 0; 1018 1019 for (i = 0; i < MAX_TOUCHES; i++) { 1020 if (mt[i].x != 0 || mt[i].y != 0) 1021 fingers++; 1022 } 1023 1024 return fingers; 1025} 1026 1027static int alps_decode_packet_v7(struct alps_fields *f, 1028 unsigned char *p, 1029 struct psmouse *psmouse) 1030{ 1031 struct alps_data *priv = psmouse->private; 1032 unsigned char pkt_id; 1033 1034 pkt_id = alps_get_packet_id_v7(p); 1035 if (pkt_id == V7_PACKET_ID_IDLE) 1036 return 0; 1037 if (pkt_id == V7_PACKET_ID_UNKNOWN) 1038 return -1; 1039 /* 1040 * NEW packets are send to indicate a discontinuity in the finger 1041 * coordinate reporting. Specifically a finger may have moved from 1042 * slot 0 to 1 or vice versa. INPUT_MT_TRACK takes care of this for 1043 * us. 1044 * 1045 * NEW packets have 3 problems: 1046 * 1) They do not contain middle / right button info (on non clickpads) 1047 * this can be worked around by preserving the old button state 1048 * 2) They do not contain an accurate fingercount, and they are 1049 * typically send when the number of fingers changes. We cannot use 1050 * the old finger count as that may mismatch with the amount of 1051 * touch coordinates we've available in the NEW packet 1052 * 3) Their x data for the second touch is inaccurate leading to 1053 * a possible jump of the x coordinate by 16 units when the first 1054 * non NEW packet comes in 1055 * Since problems 2 & 3 cannot be worked around, just ignore them. 1056 */ 1057 if (pkt_id == V7_PACKET_ID_NEW) 1058 return 1; 1059 1060 alps_get_finger_coordinate_v7(f->mt, p, pkt_id); 1061 1062 if (pkt_id == V7_PACKET_ID_TWO) 1063 f->fingers = alps_get_mt_count(f->mt); 1064 else /* pkt_id == V7_PACKET_ID_MULTI */ 1065 f->fingers = 3 + (p[5] & 0x03); 1066 1067 f->left = (p[0] & 0x80) >> 7; 1068 if (priv->flags & ALPS_BUTTONPAD) { 1069 if (p[0] & 0x20) 1070 f->fingers++; 1071 if (p[0] & 0x10) 1072 f->fingers++; 1073 } else { 1074 f->right = (p[0] & 0x20) >> 5; 1075 f->middle = (p[0] & 0x10) >> 4; 1076 } 1077 1078 /* Sometimes a single touch is reported in mt[1] rather then mt[0] */ 1079 if (f->fingers == 1 && f->mt[0].x == 0 && f->mt[0].y == 0) { 1080 f->mt[0].x = f->mt[1].x; 1081 f->mt[0].y = f->mt[1].y; 1082 f->mt[1].x = 0; 1083 f->mt[1].y = 0; 1084 } 1085 1086 return 0; 1087} 1088 1089static void alps_process_trackstick_packet_v7(struct psmouse *psmouse) 1090{ 1091 struct alps_data *priv = psmouse->private; 1092 unsigned char *packet = psmouse->packet; 1093 struct input_dev *dev2 = priv->dev2; 1094 int x, y, z, left, right, middle; 1095 1096 /* It should be a DualPoint when received trackstick packet */ 1097 if (!(priv->flags & ALPS_DUALPOINT)) { 1098 psmouse_warn(psmouse, 1099 "Rejected trackstick packet from non DualPoint device"); 1100 return; 1101 } 1102 1103 x = ((packet[2] & 0xbf)) | ((packet[3] & 0x10) << 2); 1104 y = (packet[3] & 0x07) | (packet[4] & 0xb8) | 1105 ((packet[3] & 0x20) << 1); 1106 z = (packet[5] & 0x3f) | ((packet[3] & 0x80) >> 1); 1107 1108 left = (packet[1] & 0x01); 1109 right = (packet[1] & 0x02) >> 1; 1110 middle = (packet[1] & 0x04) >> 2; 1111 1112 input_report_rel(dev2, REL_X, (char)x); 1113 input_report_rel(dev2, REL_Y, -((char)y)); 1114 1115 input_report_key(dev2, BTN_LEFT, left); 1116 input_report_key(dev2, BTN_RIGHT, right); 1117 input_report_key(dev2, BTN_MIDDLE, middle); 1118 1119 input_sync(dev2); 1120} 1121 1122static void alps_process_touchpad_packet_v7(struct psmouse *psmouse) 1123{ 1124 struct alps_data *priv = psmouse->private; 1125 struct input_dev *dev = psmouse->dev; 1126 struct alps_fields *f = &priv->f; 1127 1128 memset(f, 0, sizeof(*f)); 1129 1130 if (priv->decode_fields(f, psmouse->packet, psmouse)) 1131 return; 1132 1133 alps_report_mt_data(psmouse, alps_get_mt_count(f->mt)); 1134 1135 input_mt_report_finger_count(dev, f->fingers); 1136 1137 input_report_key(dev, BTN_LEFT, f->left); 1138 input_report_key(dev, BTN_RIGHT, f->right); 1139 input_report_key(dev, BTN_MIDDLE, f->middle); 1140 1141 input_sync(dev); 1142} 1143 1144static void alps_process_packet_v7(struct psmouse *psmouse) 1145{ 1146 unsigned char *packet = psmouse->packet; 1147 1148 if (packet[0] == 0x48 && (packet[4] & 0x47) == 0x06) 1149 alps_process_trackstick_packet_v7(psmouse); 1150 else 1151 alps_process_touchpad_packet_v7(psmouse); 1152} 1153 1154static unsigned char alps_get_pkt_id_ss4_v2(unsigned char *byte) 1155{ 1156 unsigned char pkt_id = SS4_PACKET_ID_IDLE; 1157 1158 if (byte[0] == 0x18 && byte[1] == 0x10 && byte[2] == 0x00 && 1159 (byte[3] & 0x88) == 0x08 && byte[4] == 0x10 && byte[5] == 0x00) { 1160 pkt_id = SS4_PACKET_ID_IDLE; 1161 } else if (!(byte[3] & 0x10)) { 1162 pkt_id = SS4_PACKET_ID_ONE; 1163 } else if (!(byte[3] & 0x20)) { 1164 pkt_id = SS4_PACKET_ID_TWO; 1165 } else { 1166 pkt_id = SS4_PACKET_ID_MULTI; 1167 } 1168 1169 return pkt_id; 1170} 1171 1172static int alps_decode_ss4_v2(struct alps_fields *f, 1173 unsigned char *p, struct psmouse *psmouse) 1174{ 1175 struct alps_data *priv = psmouse->private; 1176 unsigned char pkt_id; 1177 unsigned int no_data_x, no_data_y; 1178 1179 pkt_id = alps_get_pkt_id_ss4_v2(p); 1180 1181 /* Current packet is 1Finger coordinate packet */ 1182 switch (pkt_id) { 1183 case SS4_PACKET_ID_ONE: 1184 f->mt[0].x = SS4_1F_X_V2(p); 1185 f->mt[0].y = SS4_1F_Y_V2(p); 1186 f->pressure = ((SS4_1F_Z_V2(p)) * 2) & 0x7f; 1187 f->fingers = 1; 1188 f->first_mp = 0; 1189 f->is_mp = 0; 1190 break; 1191 1192 case SS4_PACKET_ID_TWO: 1193 if (priv->flags & ALPS_BUTTONPAD) { 1194 f->mt[0].x = SS4_BTL_MF_X_V2(p, 0); 1195 f->mt[0].y = SS4_BTL_MF_Y_V2(p, 0); 1196 f->mt[1].x = SS4_BTL_MF_X_V2(p, 1); 1197 f->mt[1].y = SS4_BTL_MF_Y_V2(p, 1); 1198 } else { 1199 f->mt[0].x = SS4_STD_MF_X_V2(p, 0); 1200 f->mt[0].y = SS4_STD_MF_Y_V2(p, 0); 1201 f->mt[1].x = SS4_STD_MF_X_V2(p, 1); 1202 f->mt[1].y = SS4_STD_MF_Y_V2(p, 1); 1203 } 1204 f->pressure = SS4_MF_Z_V2(p, 0) ? 0x30 : 0; 1205 1206 if (SS4_IS_MF_CONTINUE(p)) { 1207 f->first_mp = 1; 1208 } else { 1209 f->fingers = 2; 1210 f->first_mp = 0; 1211 } 1212 f->is_mp = 0; 1213 1214 break; 1215 1216 case SS4_PACKET_ID_MULTI: 1217 if (priv->flags & ALPS_BUTTONPAD) { 1218 f->mt[2].x = SS4_BTL_MF_X_V2(p, 0); 1219 f->mt[2].y = SS4_BTL_MF_Y_V2(p, 0); 1220 f->mt[3].x = SS4_BTL_MF_X_V2(p, 1); 1221 f->mt[3].y = SS4_BTL_MF_Y_V2(p, 1); 1222 no_data_x = SS4_MFPACKET_NO_AX_BL; 1223 no_data_y = SS4_MFPACKET_NO_AY_BL; 1224 } else { 1225 f->mt[2].x = SS4_STD_MF_X_V2(p, 0); 1226 f->mt[2].y = SS4_STD_MF_Y_V2(p, 0); 1227 f->mt[3].x = SS4_STD_MF_X_V2(p, 1); 1228 f->mt[3].y = SS4_STD_MF_Y_V2(p, 1); 1229 no_data_x = SS4_MFPACKET_NO_AX; 1230 no_data_y = SS4_MFPACKET_NO_AY; 1231 } 1232 1233 f->first_mp = 0; 1234 f->is_mp = 1; 1235 1236 if (SS4_IS_5F_DETECTED(p)) { 1237 f->fingers = 5; 1238 } else if (f->mt[3].x == no_data_x && 1239 f->mt[3].y == no_data_y) { 1240 f->mt[3].x = 0; 1241 f->mt[3].y = 0; 1242 f->fingers = 3; 1243 } else { 1244 f->fingers = 4; 1245 } 1246 break; 1247 1248 case SS4_PACKET_ID_IDLE: 1249 default: 1250 memset(f, 0, sizeof(struct alps_fields)); 1251 break; 1252 } 1253 1254 f->left = !!(SS4_BTN_V2(p) & 0x01); 1255 if (!(priv->flags & ALPS_BUTTONPAD)) { 1256 f->right = !!(SS4_BTN_V2(p) & 0x02); 1257 f->middle = !!(SS4_BTN_V2(p) & 0x04); 1258 } 1259 1260 return 0; 1261} 1262 1263static void alps_process_packet_ss4_v2(struct psmouse *psmouse) 1264{ 1265 struct alps_data *priv = psmouse->private; 1266 unsigned char *packet = psmouse->packet; 1267 struct input_dev *dev = psmouse->dev; 1268 struct alps_fields *f = &priv->f; 1269 1270 memset(f, 0, sizeof(struct alps_fields)); 1271 priv->decode_fields(f, packet, psmouse); 1272 if (priv->multi_packet) { 1273 /* 1274 * Sometimes the first packet will indicate a multi-packet 1275 * sequence, but sometimes the next multi-packet would not 1276 * come. Check for this, and when it happens process the 1277 * position packet as usual. 1278 */ 1279 if (f->is_mp) { 1280 /* Now process the 1st packet */ 1281 priv->decode_fields(f, priv->multi_data, psmouse); 1282 } else { 1283 priv->multi_packet = 0; 1284 } 1285 } 1286 1287 /* 1288 * "f.is_mp" would always be '0' after merging the 1st and 2nd packet. 1289 * When it is set, it means 2nd packet comes without 1st packet come. 1290 */ 1291 if (f->is_mp) 1292 return; 1293 1294 /* Save the first packet */ 1295 if (!priv->multi_packet && f->first_mp) { 1296 priv->multi_packet = 1; 1297 memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); 1298 return; 1299 } 1300 1301 priv->multi_packet = 0; 1302 1303 alps_report_mt_data(psmouse, (f->fingers <= 4) ? f->fingers : 4); 1304 1305 input_mt_report_finger_count(dev, f->fingers); 1306 1307 input_report_key(dev, BTN_LEFT, f->left); 1308 input_report_key(dev, BTN_RIGHT, f->right); 1309 input_report_key(dev, BTN_MIDDLE, f->middle); 1310 1311 input_report_abs(dev, ABS_PRESSURE, f->pressure); 1312 input_sync(dev); 1313} 1314 1315static bool alps_is_valid_package_ss4_v2(struct psmouse *psmouse) 1316{ 1317 if (psmouse->pktcnt == 4 && ((psmouse->packet[3] & 0x08) != 0x08)) 1318 return false; 1319 if (psmouse->pktcnt == 6 && ((psmouse->packet[5] & 0x10) != 0x0)) 1320 return false; 1321 return true; 1322} 1323 1324static DEFINE_MUTEX(alps_mutex); 1325 1326static void alps_register_bare_ps2_mouse(struct work_struct *work) 1327{ 1328 struct alps_data *priv = 1329 container_of(work, struct alps_data, dev3_register_work.work); 1330 struct psmouse *psmouse = priv->psmouse; 1331 struct input_dev *dev3; 1332 int error = 0; 1333 1334 mutex_lock(&alps_mutex); 1335 1336 if (priv->dev3) 1337 goto out; 1338 1339 dev3 = input_allocate_device(); 1340 if (!dev3) { 1341 psmouse_err(psmouse, "failed to allocate secondary device\n"); 1342 error = -ENOMEM; 1343 goto out; 1344 } 1345 1346 snprintf(priv->phys3, sizeof(priv->phys3), "%s/%s", 1347 psmouse->ps2dev.serio->phys, 1348 (priv->dev2 ? "input2" : "input1")); 1349 dev3->phys = priv->phys3; 1350 1351 /* 1352 * format of input device name is: "protocol vendor name" 1353 * see function psmouse_switch_protocol() in psmouse-base.c 1354 */ 1355 dev3->name = "PS/2 ALPS Mouse"; 1356 1357 dev3->id.bustype = BUS_I8042; 1358 dev3->id.vendor = 0x0002; 1359 dev3->id.product = PSMOUSE_PS2; 1360 dev3->id.version = 0x0000; 1361 dev3->dev.parent = &psmouse->ps2dev.serio->dev; 1362 1363 input_set_capability(dev3, EV_REL, REL_X); 1364 input_set_capability(dev3, EV_REL, REL_Y); 1365 input_set_capability(dev3, EV_KEY, BTN_LEFT); 1366 input_set_capability(dev3, EV_KEY, BTN_RIGHT); 1367 input_set_capability(dev3, EV_KEY, BTN_MIDDLE); 1368 1369 __set_bit(INPUT_PROP_POINTER, dev3->propbit); 1370 1371 error = input_register_device(dev3); 1372 if (error) { 1373 psmouse_err(psmouse, 1374 "failed to register secondary device: %d\n", 1375 error); 1376 input_free_device(dev3); 1377 goto out; 1378 } 1379 1380 priv->dev3 = dev3; 1381 1382out: 1383 /* 1384 * Save the error code so that we can detect that we 1385 * already tried to create the device. 1386 */ 1387 if (error) 1388 priv->dev3 = ERR_PTR(error); 1389 1390 mutex_unlock(&alps_mutex); 1391} 1392 1393static void alps_report_bare_ps2_packet(struct psmouse *psmouse, 1394 unsigned char packet[], 1395 bool report_buttons) 1396{ 1397 struct alps_data *priv = psmouse->private; 1398 struct input_dev *dev, *dev2 = NULL; 1399 1400 /* Figure out which device to use to report the bare packet */ 1401 if (priv->proto_version == ALPS_PROTO_V2 && 1402 (priv->flags & ALPS_DUALPOINT)) { 1403 /* On V2 devices the DualPoint Stick reports bare packets */ 1404 dev = priv->dev2; 1405 dev2 = psmouse->dev; 1406 } else if (unlikely(IS_ERR_OR_NULL(priv->dev3))) { 1407 /* Register dev3 mouse if we received PS/2 packet first time */ 1408 if (!IS_ERR(priv->dev3)) 1409 psmouse_queue_work(psmouse, &priv->dev3_register_work, 1410 0); 1411 return; 1412 } else { 1413 dev = priv->dev3; 1414 } 1415 1416 if (report_buttons) 1417 alps_report_buttons(dev, dev2, 1418 packet[0] & 1, packet[0] & 2, packet[0] & 4); 1419 1420 input_report_rel(dev, REL_X, 1421 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0); 1422 input_report_rel(dev, REL_Y, 1423 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0); 1424 1425 input_sync(dev); 1426} 1427 1428static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse) 1429{ 1430 struct alps_data *priv = psmouse->private; 1431 1432 if (psmouse->pktcnt < 6) 1433 return PSMOUSE_GOOD_DATA; 1434 1435 if (psmouse->pktcnt == 6) { 1436 /* 1437 * Start a timer to flush the packet if it ends up last 1438 * 6-byte packet in the stream. Timer needs to fire 1439 * psmouse core times out itself. 20 ms should be enough 1440 * to decide if we are getting more data or not. 1441 */ 1442 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20)); 1443 return PSMOUSE_GOOD_DATA; 1444 } 1445 1446 del_timer(&priv->timer); 1447 1448 if (psmouse->packet[6] & 0x80) { 1449 1450 /* 1451 * Highest bit is set - that means we either had 1452 * complete ALPS packet and this is start of the 1453 * next packet or we got garbage. 1454 */ 1455 1456 if (((psmouse->packet[3] | 1457 psmouse->packet[4] | 1458 psmouse->packet[5]) & 0x80) || 1459 (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) { 1460 psmouse_dbg(psmouse, 1461 "refusing packet %4ph (suspected interleaved ps/2)\n", 1462 psmouse->packet + 3); 1463 return PSMOUSE_BAD_DATA; 1464 } 1465 1466 priv->process_packet(psmouse); 1467 1468 /* Continue with the next packet */ 1469 psmouse->packet[0] = psmouse->packet[6]; 1470 psmouse->pktcnt = 1; 1471 1472 } else { 1473 1474 /* 1475 * High bit is 0 - that means that we indeed got a PS/2 1476 * packet in the middle of ALPS packet. 1477 * 1478 * There is also possibility that we got 6-byte ALPS 1479 * packet followed by 3-byte packet from trackpoint. We 1480 * can not distinguish between these 2 scenarios but 1481 * because the latter is unlikely to happen in course of 1482 * normal operation (user would need to press all 1483 * buttons on the pad and start moving trackpoint 1484 * without touching the pad surface) we assume former. 1485 * Even if we are wrong the wost thing that would happen 1486 * the cursor would jump but we should not get protocol 1487 * de-synchronization. 1488 */ 1489 1490 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3], 1491 false); 1492 1493 /* 1494 * Continue with the standard ALPS protocol handling, 1495 * but make sure we won't process it as an interleaved 1496 * packet again, which may happen if all buttons are 1497 * pressed. To avoid this let's reset the 4th bit which 1498 * is normally 1. 1499 */ 1500 psmouse->packet[3] = psmouse->packet[6] & 0xf7; 1501 psmouse->pktcnt = 4; 1502 } 1503 1504 return PSMOUSE_GOOD_DATA; 1505} 1506 1507static void alps_flush_packet(unsigned long data) 1508{ 1509 struct psmouse *psmouse = (struct psmouse *)data; 1510 struct alps_data *priv = psmouse->private; 1511 1512 serio_pause_rx(psmouse->ps2dev.serio); 1513 1514 if (psmouse->pktcnt == psmouse->pktsize) { 1515 1516 /* 1517 * We did not any more data in reasonable amount of time. 1518 * Validate the last 3 bytes and process as a standard 1519 * ALPS packet. 1520 */ 1521 if ((psmouse->packet[3] | 1522 psmouse->packet[4] | 1523 psmouse->packet[5]) & 0x80) { 1524 psmouse_dbg(psmouse, 1525 "refusing packet %3ph (suspected interleaved ps/2)\n", 1526 psmouse->packet + 3); 1527 } else { 1528 priv->process_packet(psmouse); 1529 } 1530 psmouse->pktcnt = 0; 1531 } 1532 1533 serio_continue_rx(psmouse->ps2dev.serio); 1534} 1535 1536static psmouse_ret_t alps_process_byte(struct psmouse *psmouse) 1537{ 1538 struct alps_data *priv = psmouse->private; 1539 1540 /* 1541 * Check if we are dealing with a bare PS/2 packet, presumably from 1542 * a device connected to the external PS/2 port. Because bare PS/2 1543 * protocol does not have enough constant bits to self-synchronize 1544 * properly we only do this if the device is fully synchronized. 1545 * Can not distinguish V8's first byte from PS/2 packet's 1546 */ 1547 if (priv->proto_version != ALPS_PROTO_V8 && 1548 !psmouse->out_of_sync_cnt && 1549 (psmouse->packet[0] & 0xc8) == 0x08) { 1550 1551 if (psmouse->pktcnt == 3) { 1552 alps_report_bare_ps2_packet(psmouse, psmouse->packet, 1553 true); 1554 return PSMOUSE_FULL_PACKET; 1555 } 1556 return PSMOUSE_GOOD_DATA; 1557 } 1558 1559 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */ 1560 1561 if ((priv->flags & ALPS_PS2_INTERLEAVED) && 1562 psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) { 1563 return alps_handle_interleaved_ps2(psmouse); 1564 } 1565 1566 if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) { 1567 psmouse_dbg(psmouse, 1568 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n", 1569 psmouse->packet[0], priv->mask0, priv->byte0); 1570 return PSMOUSE_BAD_DATA; 1571 } 1572 1573 /* Bytes 2 - pktsize should have 0 in the highest bit */ 1574 if (priv->proto_version < ALPS_PROTO_V5 && 1575 psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize && 1576 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) { 1577 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1578 psmouse->pktcnt - 1, 1579 psmouse->packet[psmouse->pktcnt - 1]); 1580 1581 if (priv->proto_version == ALPS_PROTO_V3_RUSHMORE && 1582 psmouse->pktcnt == psmouse->pktsize) { 1583 /* 1584 * Some Dell boxes, such as Latitude E6440 or E7440 1585 * with closed lid, quite often smash last byte of 1586 * otherwise valid packet with 0xff. Given that the 1587 * next packet is very likely to be valid let's 1588 * report PSMOUSE_FULL_PACKET but not process data, 1589 * rather than reporting PSMOUSE_BAD_DATA and 1590 * filling the logs. 1591 */ 1592 return PSMOUSE_FULL_PACKET; 1593 } 1594 1595 return PSMOUSE_BAD_DATA; 1596 } 1597 1598 if ((priv->proto_version == ALPS_PROTO_V7 && 1599 !alps_is_valid_package_v7(psmouse)) || 1600 (priv->proto_version == ALPS_PROTO_V8 && 1601 !alps_is_valid_package_ss4_v2(psmouse))) { 1602 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1603 psmouse->pktcnt - 1, 1604 psmouse->packet[psmouse->pktcnt - 1]); 1605 return PSMOUSE_BAD_DATA; 1606 } 1607 1608 if (psmouse->pktcnt == psmouse->pktsize) { 1609 priv->process_packet(psmouse); 1610 return PSMOUSE_FULL_PACKET; 1611 } 1612 1613 return PSMOUSE_GOOD_DATA; 1614} 1615 1616static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble) 1617{ 1618 struct ps2dev *ps2dev = &psmouse->ps2dev; 1619 struct alps_data *priv = psmouse->private; 1620 int command; 1621 unsigned char *param; 1622 unsigned char dummy[4]; 1623 1624 BUG_ON(nibble > 0xf); 1625 1626 command = priv->nibble_commands[nibble].command; 1627 param = (command & 0x0f00) ? 1628 dummy : (unsigned char *)&priv->nibble_commands[nibble].data; 1629 1630 if (ps2_command(ps2dev, param, command)) 1631 return -1; 1632 1633 return 0; 1634} 1635 1636static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr) 1637{ 1638 struct ps2dev *ps2dev = &psmouse->ps2dev; 1639 struct alps_data *priv = psmouse->private; 1640 int i, nibble; 1641 1642 if (ps2_command(ps2dev, NULL, priv->addr_command)) 1643 return -1; 1644 1645 for (i = 12; i >= 0; i -= 4) { 1646 nibble = (addr >> i) & 0xf; 1647 if (alps_command_mode_send_nibble(psmouse, nibble)) 1648 return -1; 1649 } 1650 1651 return 0; 1652} 1653 1654static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1655{ 1656 struct ps2dev *ps2dev = &psmouse->ps2dev; 1657 unsigned char param[4]; 1658 1659 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1660 return -1; 1661 1662 /* 1663 * The address being read is returned in the first two bytes 1664 * of the result. Check that this address matches the expected 1665 * address. 1666 */ 1667 if (addr != ((param[0] << 8) | param[1])) 1668 return -1; 1669 1670 return param[2]; 1671} 1672 1673static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1674{ 1675 if (alps_command_mode_set_addr(psmouse, addr)) 1676 return -1; 1677 return __alps_command_mode_read_reg(psmouse, addr); 1678} 1679 1680static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value) 1681{ 1682 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf)) 1683 return -1; 1684 if (alps_command_mode_send_nibble(psmouse, value & 0xf)) 1685 return -1; 1686 return 0; 1687} 1688 1689static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr, 1690 u8 value) 1691{ 1692 if (alps_command_mode_set_addr(psmouse, addr)) 1693 return -1; 1694 return __alps_command_mode_write_reg(psmouse, value); 1695} 1696 1697static int alps_rpt_cmd(struct psmouse *psmouse, int init_command, 1698 int repeated_command, unsigned char *param) 1699{ 1700 struct ps2dev *ps2dev = &psmouse->ps2dev; 1701 1702 param[0] = 0; 1703 if (init_command && ps2_command(ps2dev, param, init_command)) 1704 return -EIO; 1705 1706 if (ps2_command(ps2dev, NULL, repeated_command) || 1707 ps2_command(ps2dev, NULL, repeated_command) || 1708 ps2_command(ps2dev, NULL, repeated_command)) 1709 return -EIO; 1710 1711 param[0] = param[1] = param[2] = 0xff; 1712 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1713 return -EIO; 1714 1715 psmouse_dbg(psmouse, "%2.2X report: %3ph\n", 1716 repeated_command, param); 1717 return 0; 1718} 1719 1720static bool alps_check_valid_firmware_id(unsigned char id[]) 1721{ 1722 if (id[0] == 0x73) 1723 return true; 1724 1725 if (id[0] == 0x88 && 1726 (id[1] == 0x07 || 1727 id[1] == 0x08 || 1728 (id[1] & 0xf0) == 0xb0 || 1729 (id[1] & 0xf0) == 0xc0)) { 1730 return true; 1731 } 1732 1733 return false; 1734} 1735 1736static int alps_enter_command_mode(struct psmouse *psmouse) 1737{ 1738 unsigned char param[4]; 1739 1740 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) { 1741 psmouse_err(psmouse, "failed to enter command mode\n"); 1742 return -1; 1743 } 1744 1745 if (!alps_check_valid_firmware_id(param)) { 1746 psmouse_dbg(psmouse, 1747 "unknown response while entering command mode\n"); 1748 return -1; 1749 } 1750 return 0; 1751} 1752 1753static inline int alps_exit_command_mode(struct psmouse *psmouse) 1754{ 1755 struct ps2dev *ps2dev = &psmouse->ps2dev; 1756 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) 1757 return -1; 1758 return 0; 1759} 1760 1761/* 1762 * For DualPoint devices select the device that should respond to 1763 * subsequent commands. It looks like glidepad is behind stickpointer, 1764 * I'd thought it would be other way around... 1765 */ 1766static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable) 1767{ 1768 struct ps2dev *ps2dev = &psmouse->ps2dev; 1769 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11; 1770 1771 if (ps2_command(ps2dev, NULL, cmd) || 1772 ps2_command(ps2dev, NULL, cmd) || 1773 ps2_command(ps2dev, NULL, cmd) || 1774 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1775 return -1; 1776 1777 /* we may get 3 more bytes, just ignore them */ 1778 ps2_drain(ps2dev, 3, 100); 1779 1780 return 0; 1781} 1782 1783static int alps_absolute_mode_v1_v2(struct psmouse *psmouse) 1784{ 1785 struct ps2dev *ps2dev = &psmouse->ps2dev; 1786 1787 /* Try ALPS magic knock - 4 disable before enable */ 1788 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1789 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1790 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1791 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1792 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) 1793 return -1; 1794 1795 /* 1796 * Switch mouse to poll (remote) mode so motion data will not 1797 * get in our way 1798 */ 1799 return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL); 1800} 1801 1802static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word) 1803{ 1804 int i, nibble; 1805 1806 /* 1807 * b0-b11 are valid bits, send sequence is inverse. 1808 * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1 1809 */ 1810 for (i = 0; i <= 8; i += 4) { 1811 nibble = (word >> i) & 0xf; 1812 if (alps_command_mode_send_nibble(psmouse, nibble)) 1813 return -1; 1814 } 1815 1816 return 0; 1817} 1818 1819static int alps_monitor_mode_write_reg(struct psmouse *psmouse, 1820 u16 addr, u16 value) 1821{ 1822 struct ps2dev *ps2dev = &psmouse->ps2dev; 1823 1824 /* 0x0A0 is the command to write the word */ 1825 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) || 1826 alps_monitor_mode_send_word(psmouse, 0x0A0) || 1827 alps_monitor_mode_send_word(psmouse, addr) || 1828 alps_monitor_mode_send_word(psmouse, value) || 1829 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1830 return -1; 1831 1832 return 0; 1833} 1834 1835static int alps_monitor_mode(struct psmouse *psmouse, bool enable) 1836{ 1837 struct ps2dev *ps2dev = &psmouse->ps2dev; 1838 1839 if (enable) { 1840 /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */ 1841 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 1842 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) || 1843 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1844 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1845 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1846 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1847 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1848 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO)) 1849 return -1; 1850 } else { 1851 /* EC to exit monitor mode */ 1852 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP)) 1853 return -1; 1854 } 1855 1856 return 0; 1857} 1858 1859static int alps_absolute_mode_v6(struct psmouse *psmouse) 1860{ 1861 u16 reg_val = 0x181; 1862 int ret = -1; 1863 1864 /* enter monitor mode, to write the register */ 1865 if (alps_monitor_mode(psmouse, true)) 1866 return -1; 1867 1868 ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val); 1869 1870 if (alps_monitor_mode(psmouse, false)) 1871 ret = -1; 1872 1873 return ret; 1874} 1875 1876static int alps_get_status(struct psmouse *psmouse, char *param) 1877{ 1878 /* Get status: 0xF5 0xF5 0xF5 0xE9 */ 1879 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param)) 1880 return -1; 1881 1882 return 0; 1883} 1884 1885/* 1886 * Turn touchpad tapping on or off. The sequences are: 1887 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable, 1888 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable. 1889 * My guess that 0xE9 (GetInfo) is here as a sync point. 1890 * For models that also have stickpointer (DualPoints) its tapping 1891 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but 1892 * we don't fiddle with it. 1893 */ 1894static int alps_tap_mode(struct psmouse *psmouse, int enable) 1895{ 1896 struct ps2dev *ps2dev = &psmouse->ps2dev; 1897 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES; 1898 unsigned char tap_arg = enable ? 0x0A : 0x00; 1899 unsigned char param[4]; 1900 1901 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) || 1902 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1903 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1904 ps2_command(ps2dev, &tap_arg, cmd)) 1905 return -1; 1906 1907 if (alps_get_status(psmouse, param)) 1908 return -1; 1909 1910 return 0; 1911} 1912 1913/* 1914 * alps_poll() - poll the touchpad for current motion packet. 1915 * Used in resync. 1916 */ 1917static int alps_poll(struct psmouse *psmouse) 1918{ 1919 struct alps_data *priv = psmouse->private; 1920 unsigned char buf[sizeof(psmouse->packet)]; 1921 bool poll_failed; 1922 1923 if (priv->flags & ALPS_PASS) 1924 alps_passthrough_mode_v2(psmouse, true); 1925 1926 poll_failed = ps2_command(&psmouse->ps2dev, buf, 1927 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0; 1928 1929 if (priv->flags & ALPS_PASS) 1930 alps_passthrough_mode_v2(psmouse, false); 1931 1932 if (poll_failed || (buf[0] & priv->mask0) != priv->byte0) 1933 return -1; 1934 1935 if ((psmouse->badbyte & 0xc8) == 0x08) { 1936/* 1937 * Poll the track stick ... 1938 */ 1939 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8))) 1940 return -1; 1941 } 1942 1943 memcpy(psmouse->packet, buf, sizeof(buf)); 1944 return 0; 1945} 1946 1947static int alps_hw_init_v1_v2(struct psmouse *psmouse) 1948{ 1949 struct alps_data *priv = psmouse->private; 1950 1951 if ((priv->flags & ALPS_PASS) && 1952 alps_passthrough_mode_v2(psmouse, true)) { 1953 return -1; 1954 } 1955 1956 if (alps_tap_mode(psmouse, true)) { 1957 psmouse_warn(psmouse, "Failed to enable hardware tapping\n"); 1958 return -1; 1959 } 1960 1961 if (alps_absolute_mode_v1_v2(psmouse)) { 1962 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 1963 return -1; 1964 } 1965 1966 if ((priv->flags & ALPS_PASS) && 1967 alps_passthrough_mode_v2(psmouse, false)) { 1968 return -1; 1969 } 1970 1971 /* ALPS needs stream mode, otherwise it won't report any data */ 1972 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) { 1973 psmouse_err(psmouse, "Failed to enable stream mode\n"); 1974 return -1; 1975 } 1976 1977 return 0; 1978} 1979 1980static int alps_hw_init_v6(struct psmouse *psmouse) 1981{ 1982 unsigned char param[2] = {0xC8, 0x14}; 1983 1984 /* Enter passthrough mode to let trackpoint enter 6byte raw mode */ 1985 if (alps_passthrough_mode_v2(psmouse, true)) 1986 return -1; 1987 1988 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1989 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1990 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1991 ps2_command(&psmouse->ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 1992 ps2_command(&psmouse->ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 1993 return -1; 1994 1995 if (alps_passthrough_mode_v2(psmouse, false)) 1996 return -1; 1997 1998 if (alps_absolute_mode_v6(psmouse)) { 1999 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 2000 return -1; 2001 } 2002 2003 return 0; 2004} 2005 2006/* 2007 * Enable or disable passthrough mode to the trackstick. 2008 */ 2009static int alps_passthrough_mode_v3(struct psmouse *psmouse, 2010 int reg_base, bool enable) 2011{ 2012 int reg_val, ret = -1; 2013 2014 if (alps_enter_command_mode(psmouse)) 2015 return -1; 2016 2017 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008); 2018 if (reg_val == -1) 2019 goto error; 2020 2021 if (enable) 2022 reg_val |= 0x01; 2023 else 2024 reg_val &= ~0x01; 2025 2026 ret = __alps_command_mode_write_reg(psmouse, reg_val); 2027 2028error: 2029 if (alps_exit_command_mode(psmouse)) 2030 ret = -1; 2031 return ret; 2032} 2033 2034/* Must be in command mode when calling this function */ 2035static int alps_absolute_mode_v3(struct psmouse *psmouse) 2036{ 2037 int reg_val; 2038 2039 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 2040 if (reg_val == -1) 2041 return -1; 2042 2043 reg_val |= 0x06; 2044 if (__alps_command_mode_write_reg(psmouse, reg_val)) 2045 return -1; 2046 2047 return 0; 2048} 2049 2050static int alps_probe_trackstick_v3(struct psmouse *psmouse, int reg_base) 2051{ 2052 int ret = -EIO, reg_val; 2053 2054 if (alps_enter_command_mode(psmouse)) 2055 goto error; 2056 2057 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08); 2058 if (reg_val == -1) 2059 goto error; 2060 2061 /* bit 7: trackstick is present */ 2062 ret = reg_val & 0x80 ? 0 : -ENODEV; 2063 2064error: 2065 alps_exit_command_mode(psmouse); 2066 return ret; 2067} 2068 2069static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base) 2070{ 2071 struct ps2dev *ps2dev = &psmouse->ps2dev; 2072 int ret = 0; 2073 unsigned char param[4]; 2074 2075 if (alps_passthrough_mode_v3(psmouse, reg_base, true)) 2076 return -EIO; 2077 2078 /* 2079 * E7 report for the trackstick 2080 * 2081 * There have been reports of failures to seem to trace back 2082 * to the above trackstick check failing. When these occur 2083 * this E7 report fails, so when that happens we continue 2084 * with the assumption that there isn't a trackstick after 2085 * all. 2086 */ 2087 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) { 2088 psmouse_warn(psmouse, "Failed to initialize trackstick (E7 report failed)\n"); 2089 ret = -ENODEV; 2090 } else { 2091 psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param); 2092 2093 /* 2094 * Not sure what this does, but it is absolutely 2095 * essential. Without it, the touchpad does not 2096 * work at all and the trackstick just emits normal 2097 * PS/2 packets. 2098 */ 2099 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2100 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2101 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2102 alps_command_mode_send_nibble(psmouse, 0x9) || 2103 alps_command_mode_send_nibble(psmouse, 0x4)) { 2104 psmouse_err(psmouse, 2105 "Error sending magic E6 sequence\n"); 2106 ret = -EIO; 2107 goto error; 2108 } 2109 2110 /* 2111 * This ensures the trackstick packets are in the format 2112 * supported by this driver. If bit 1 isn't set the packet 2113 * format is different. 2114 */ 2115 if (alps_enter_command_mode(psmouse) || 2116 alps_command_mode_write_reg(psmouse, 2117 reg_base + 0x08, 0x82) || 2118 alps_exit_command_mode(psmouse)) 2119 ret = -EIO; 2120 } 2121 2122error: 2123 if (alps_passthrough_mode_v3(psmouse, reg_base, false)) 2124 ret = -EIO; 2125 2126 return ret; 2127} 2128 2129static int alps_hw_init_v3(struct psmouse *psmouse) 2130{ 2131 struct ps2dev *ps2dev = &psmouse->ps2dev; 2132 int reg_val; 2133 unsigned char param[4]; 2134 2135 reg_val = alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE); 2136 if (reg_val == -EIO) 2137 goto error; 2138 2139 if (reg_val == 0 && 2140 alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO) 2141 goto error; 2142 2143 if (alps_enter_command_mode(psmouse) || 2144 alps_absolute_mode_v3(psmouse)) { 2145 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 2146 goto error; 2147 } 2148 2149 reg_val = alps_command_mode_read_reg(psmouse, 0x0006); 2150 if (reg_val == -1) 2151 goto error; 2152 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 2153 goto error; 2154 2155 reg_val = alps_command_mode_read_reg(psmouse, 0x0007); 2156 if (reg_val == -1) 2157 goto error; 2158 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 2159 goto error; 2160 2161 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1) 2162 goto error; 2163 if (__alps_command_mode_write_reg(psmouse, 0x04)) 2164 goto error; 2165 2166 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1) 2167 goto error; 2168 if (__alps_command_mode_write_reg(psmouse, 0x03)) 2169 goto error; 2170 2171 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1) 2172 goto error; 2173 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03)) 2174 goto error; 2175 2176 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1) 2177 goto error; 2178 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04)) 2179 goto error; 2180 2181 alps_exit_command_mode(psmouse); 2182 2183 /* Set rate and enable data reporting */ 2184 param[0] = 0x64; 2185 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 2186 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 2187 psmouse_err(psmouse, "Failed to enable data reporting\n"); 2188 return -1; 2189 } 2190 2191 return 0; 2192 2193error: 2194 /* 2195 * Leaving the touchpad in command mode will essentially render 2196 * it unusable until the machine reboots, so exit it here just 2197 * to be safe 2198 */ 2199 alps_exit_command_mode(psmouse); 2200 return -1; 2201} 2202 2203static int alps_get_v3_v7_resolution(struct psmouse *psmouse, int reg_pitch) 2204{ 2205 int reg, x_pitch, y_pitch, x_electrode, y_electrode, x_phys, y_phys; 2206 struct alps_data *priv = psmouse->private; 2207 2208 reg = alps_command_mode_read_reg(psmouse, reg_pitch); 2209 if (reg < 0) 2210 return reg; 2211 2212 x_pitch = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ 2213 x_pitch = 50 + 2 * x_pitch; /* In 0.1 mm units */ 2214 2215 y_pitch = (char)reg >> 4; /* sign extend upper 4 bits */ 2216 y_pitch = 36 + 2 * y_pitch; /* In 0.1 mm units */ 2217 2218 reg = alps_command_mode_read_reg(psmouse, reg_pitch + 1); 2219 if (reg < 0) 2220 return reg; 2221 2222 x_electrode = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ 2223 x_electrode = 17 + x_electrode; 2224 2225 y_electrode = (char)reg >> 4; /* sign extend upper 4 bits */ 2226 y_electrode = 13 + y_electrode; 2227 2228 x_phys = x_pitch * (x_electrode - 1); /* In 0.1 mm units */ 2229 y_phys = y_pitch * (y_electrode - 1); /* In 0.1 mm units */ 2230 2231 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ 2232 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ 2233 2234 psmouse_dbg(psmouse, 2235 "pitch %dx%d num-electrodes %dx%d physical size %dx%d mm res %dx%d\n", 2236 x_pitch, y_pitch, x_electrode, y_electrode, 2237 x_phys / 10, y_phys / 10, priv->x_res, priv->y_res); 2238 2239 return 0; 2240} 2241 2242static int alps_hw_init_rushmore_v3(struct psmouse *psmouse) 2243{ 2244 struct alps_data *priv = psmouse->private; 2245 struct ps2dev *ps2dev = &psmouse->ps2dev; 2246 int reg_val, ret = -1; 2247 2248 if (priv->flags & ALPS_DUALPOINT) { 2249 reg_val = alps_setup_trackstick_v3(psmouse, 2250 ALPS_REG_BASE_RUSHMORE); 2251 if (reg_val == -EIO) 2252 goto error; 2253 } 2254 2255 if (alps_enter_command_mode(psmouse) || 2256 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 || 2257 alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00)) 2258 goto error; 2259 2260 if (alps_get_v3_v7_resolution(psmouse, 0xc2da)) 2261 goto error; 2262 2263 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6); 2264 if (reg_val == -1) 2265 goto error; 2266 if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd)) 2267 goto error; 2268 2269 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 2270 goto error; 2271 2272 /* enter absolute mode */ 2273 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 2274 if (reg_val == -1) 2275 goto error; 2276 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 2277 goto error; 2278 2279 alps_exit_command_mode(psmouse); 2280 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2281 2282error: 2283 alps_exit_command_mode(psmouse); 2284 return ret; 2285} 2286 2287/* Must be in command mode when calling this function */ 2288static int alps_absolute_mode_v4(struct psmouse *psmouse) 2289{ 2290 int reg_val; 2291 2292 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 2293 if (reg_val == -1) 2294 return -1; 2295 2296 reg_val |= 0x02; 2297 if (__alps_command_mode_write_reg(psmouse, reg_val)) 2298 return -1; 2299 2300 return 0; 2301} 2302 2303static int alps_hw_init_v4(struct psmouse *psmouse) 2304{ 2305 struct ps2dev *ps2dev = &psmouse->ps2dev; 2306 unsigned char param[4]; 2307 2308 if (alps_enter_command_mode(psmouse)) 2309 goto error; 2310 2311 if (alps_absolute_mode_v4(psmouse)) { 2312 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 2313 goto error; 2314 } 2315 2316 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c)) 2317 goto error; 2318 2319 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03)) 2320 goto error; 2321 2322 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03)) 2323 goto error; 2324 2325 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15)) 2326 goto error; 2327 2328 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01)) 2329 goto error; 2330 2331 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03)) 2332 goto error; 2333 2334 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03)) 2335 goto error; 2336 2337 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03)) 2338 goto error; 2339 2340 alps_exit_command_mode(psmouse); 2341 2342 /* 2343 * This sequence changes the output from a 9-byte to an 2344 * 8-byte format. All the same data seems to be present, 2345 * just in a more compact format. 2346 */ 2347 param[0] = 0xc8; 2348 param[1] = 0x64; 2349 param[2] = 0x50; 2350 if (ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2351 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE) || 2352 ps2_command(ps2dev, ¶m[2], PSMOUSE_CMD_SETRATE) || 2353 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) 2354 return -1; 2355 2356 /* Set rate and enable data reporting */ 2357 param[0] = 0x64; 2358 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 2359 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 2360 psmouse_err(psmouse, "Failed to enable data reporting\n"); 2361 return -1; 2362 } 2363 2364 return 0; 2365 2366error: 2367 /* 2368 * Leaving the touchpad in command mode will essentially render 2369 * it unusable until the machine reboots, so exit it here just 2370 * to be safe 2371 */ 2372 alps_exit_command_mode(psmouse); 2373 return -1; 2374} 2375 2376static int alps_get_otp_values_ss4_v2(struct psmouse *psmouse, 2377 unsigned char index, unsigned char otp[]) 2378{ 2379 struct ps2dev *ps2dev = &psmouse->ps2dev; 2380 2381 switch (index) { 2382 case 0: 2383 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2384 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2385 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) 2386 return -1; 2387 2388 break; 2389 2390 case 1: 2391 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2392 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2393 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) 2394 return -1; 2395 2396 break; 2397 } 2398 2399 return 0; 2400} 2401 2402static int alps_update_device_area_ss4_v2(unsigned char otp[][4], 2403 struct alps_data *priv) 2404{ 2405 int num_x_electrode; 2406 int num_y_electrode; 2407 int x_pitch, y_pitch, x_phys, y_phys; 2408 2409 num_x_electrode = SS4_NUMSENSOR_XOFFSET + (otp[1][0] & 0x0F); 2410 num_y_electrode = SS4_NUMSENSOR_YOFFSET + ((otp[1][0] >> 4) & 0x0F); 2411 2412 priv->x_max = (num_x_electrode - 1) * SS4_COUNT_PER_ELECTRODE; 2413 priv->y_max = (num_y_electrode - 1) * SS4_COUNT_PER_ELECTRODE; 2414 2415 x_pitch = ((otp[1][2] >> 2) & 0x07) + SS4_MIN_PITCH_MM; 2416 y_pitch = ((otp[1][2] >> 5) & 0x07) + SS4_MIN_PITCH_MM; 2417 2418 x_phys = x_pitch * (num_x_electrode - 1); /* In 0.1 mm units */ 2419 y_phys = y_pitch * (num_y_electrode - 1); /* In 0.1 mm units */ 2420 2421 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ 2422 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ 2423 2424 return 0; 2425} 2426 2427static int alps_update_btn_info_ss4_v2(unsigned char otp[][4], 2428 struct alps_data *priv) 2429{ 2430 unsigned char is_btnless; 2431 2432 is_btnless = (otp[1][1] >> 3) & 0x01; 2433 2434 if (is_btnless) 2435 priv->flags |= ALPS_BUTTONPAD; 2436 2437 return 0; 2438} 2439 2440static int alps_set_defaults_ss4_v2(struct psmouse *psmouse, 2441 struct alps_data *priv) 2442{ 2443 unsigned char otp[2][4]; 2444 2445 memset(otp, 0, sizeof(otp)); 2446 2447 if (alps_get_otp_values_ss4_v2(psmouse, 0, &otp[0][0]) || 2448 alps_get_otp_values_ss4_v2(psmouse, 1, &otp[1][0])) 2449 return -1; 2450 2451 alps_update_device_area_ss4_v2(otp, priv); 2452 2453 alps_update_btn_info_ss4_v2(otp, priv); 2454 2455 return 0; 2456} 2457 2458static int alps_dolphin_get_device_area(struct psmouse *psmouse, 2459 struct alps_data *priv) 2460{ 2461 struct ps2dev *ps2dev = &psmouse->ps2dev; 2462 unsigned char param[4] = {0}; 2463 int num_x_electrode, num_y_electrode; 2464 2465 if (alps_enter_command_mode(psmouse)) 2466 return -1; 2467 2468 param[0] = 0x0a; 2469 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 2470 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2471 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2472 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2473 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE)) 2474 return -1; 2475 2476 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 2477 return -1; 2478 2479 /* 2480 * Dolphin's sensor line number is not fixed. It can be calculated 2481 * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET. 2482 * Further more, we can get device's x_max and y_max by multiplying 2483 * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE. 2484 * 2485 * e.g. When we get register's sensor_x = 11 & sensor_y = 8, 2486 * real sensor line number X = 11 + 8 = 19, and 2487 * real sensor line number Y = 8 + 1 = 9. 2488 * So, x_max = (19 - 1) * 64 = 1152, and 2489 * y_max = (9 - 1) * 64 = 512. 2490 */ 2491 num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F); 2492 num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F); 2493 priv->x_bits = num_x_electrode; 2494 priv->y_bits = num_y_electrode; 2495 priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2496 priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2497 2498 if (alps_exit_command_mode(psmouse)) 2499 return -1; 2500 2501 return 0; 2502} 2503 2504static int alps_hw_init_dolphin_v1(struct psmouse *psmouse) 2505{ 2506 struct ps2dev *ps2dev = &psmouse->ps2dev; 2507 unsigned char param[2]; 2508 2509 /* This is dolphin "v1" as empirically defined by florin9doi */ 2510 param[0] = 0x64; 2511 param[1] = 0x28; 2512 2513 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2514 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2515 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 2516 return -1; 2517 2518 return 0; 2519} 2520 2521static int alps_hw_init_v7(struct psmouse *psmouse) 2522{ 2523 struct ps2dev *ps2dev = &psmouse->ps2dev; 2524 int reg_val, ret = -1; 2525 2526 if (alps_enter_command_mode(psmouse) || 2527 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1) 2528 goto error; 2529 2530 if (alps_get_v3_v7_resolution(psmouse, 0xc397)) 2531 goto error; 2532 2533 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 2534 goto error; 2535 2536 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 2537 if (reg_val == -1) 2538 goto error; 2539 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 2540 goto error; 2541 2542 alps_exit_command_mode(psmouse); 2543 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2544 2545error: 2546 alps_exit_command_mode(psmouse); 2547 return ret; 2548} 2549 2550static int alps_hw_init_ss4_v2(struct psmouse *psmouse) 2551{ 2552 struct ps2dev *ps2dev = &psmouse->ps2dev; 2553 char param[2] = {0x64, 0x28}; 2554 int ret = -1; 2555 2556 /* enter absolute mode */ 2557 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2558 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2559 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2560 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) { 2561 goto error; 2562 } 2563 2564 /* T.B.D. Decread noise packet number, delete in the future */ 2565 if (alps_exit_command_mode(psmouse) || 2566 alps_enter_command_mode(psmouse) || 2567 alps_command_mode_write_reg(psmouse, 0x001D, 0x20)) { 2568 goto error; 2569 } 2570 alps_exit_command_mode(psmouse); 2571 2572 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2573 2574error: 2575 alps_exit_command_mode(psmouse); 2576 return ret; 2577} 2578 2579static int alps_set_protocol(struct psmouse *psmouse, 2580 struct alps_data *priv, 2581 const struct alps_protocol_info *protocol) 2582{ 2583 psmouse->private = priv; 2584 2585 setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse); 2586 2587 priv->proto_version = protocol->version; 2588 priv->byte0 = protocol->byte0; 2589 priv->mask0 = protocol->mask0; 2590 priv->flags = protocol->flags; 2591 2592 priv->x_max = 2000; 2593 priv->y_max = 1400; 2594 priv->x_bits = 15; 2595 priv->y_bits = 11; 2596 2597 switch (priv->proto_version) { 2598 case ALPS_PROTO_V1: 2599 case ALPS_PROTO_V2: 2600 priv->hw_init = alps_hw_init_v1_v2; 2601 priv->process_packet = alps_process_packet_v1_v2; 2602 priv->set_abs_params = alps_set_abs_params_st; 2603 priv->x_max = 1023; 2604 priv->y_max = 767; 2605 if (dmi_check_system(alps_dmi_has_separate_stick_buttons)) 2606 priv->flags |= ALPS_STICK_BITS; 2607 break; 2608 2609 case ALPS_PROTO_V3: 2610 priv->hw_init = alps_hw_init_v3; 2611 priv->process_packet = alps_process_packet_v3; 2612 priv->set_abs_params = alps_set_abs_params_semi_mt; 2613 priv->decode_fields = alps_decode_pinnacle; 2614 priv->nibble_commands = alps_v3_nibble_commands; 2615 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2616 break; 2617 2618 case ALPS_PROTO_V3_RUSHMORE: 2619 priv->hw_init = alps_hw_init_rushmore_v3; 2620 priv->process_packet = alps_process_packet_v3; 2621 priv->set_abs_params = alps_set_abs_params_semi_mt; 2622 priv->decode_fields = alps_decode_rushmore; 2623 priv->nibble_commands = alps_v3_nibble_commands; 2624 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2625 priv->x_bits = 16; 2626 priv->y_bits = 12; 2627 2628 if (alps_probe_trackstick_v3(psmouse, 2629 ALPS_REG_BASE_RUSHMORE) < 0) 2630 priv->flags &= ~ALPS_DUALPOINT; 2631 2632 break; 2633 2634 case ALPS_PROTO_V4: 2635 priv->hw_init = alps_hw_init_v4; 2636 priv->process_packet = alps_process_packet_v4; 2637 priv->set_abs_params = alps_set_abs_params_semi_mt; 2638 priv->nibble_commands = alps_v4_nibble_commands; 2639 priv->addr_command = PSMOUSE_CMD_DISABLE; 2640 break; 2641 2642 case ALPS_PROTO_V5: 2643 priv->hw_init = alps_hw_init_dolphin_v1; 2644 priv->process_packet = alps_process_touchpad_packet_v3_v5; 2645 priv->decode_fields = alps_decode_dolphin; 2646 priv->set_abs_params = alps_set_abs_params_semi_mt; 2647 priv->nibble_commands = alps_v3_nibble_commands; 2648 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2649 priv->x_bits = 23; 2650 priv->y_bits = 12; 2651 2652 if (alps_dolphin_get_device_area(psmouse, priv)) 2653 return -EIO; 2654 2655 break; 2656 2657 case ALPS_PROTO_V6: 2658 priv->hw_init = alps_hw_init_v6; 2659 priv->process_packet = alps_process_packet_v6; 2660 priv->set_abs_params = alps_set_abs_params_st; 2661 priv->nibble_commands = alps_v6_nibble_commands; 2662 priv->x_max = 2047; 2663 priv->y_max = 1535; 2664 break; 2665 2666 case ALPS_PROTO_V7: 2667 priv->hw_init = alps_hw_init_v7; 2668 priv->process_packet = alps_process_packet_v7; 2669 priv->decode_fields = alps_decode_packet_v7; 2670 priv->set_abs_params = alps_set_abs_params_v7; 2671 priv->nibble_commands = alps_v3_nibble_commands; 2672 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2673 priv->x_max = 0xfff; 2674 priv->y_max = 0x7ff; 2675 2676 if (priv->fw_ver[1] != 0xba) 2677 priv->flags |= ALPS_BUTTONPAD; 2678 2679 break; 2680 2681 case ALPS_PROTO_V8: 2682 priv->hw_init = alps_hw_init_ss4_v2; 2683 priv->process_packet = alps_process_packet_ss4_v2; 2684 priv->decode_fields = alps_decode_ss4_v2; 2685 priv->set_abs_params = alps_set_abs_params_ss4_v2; 2686 priv->nibble_commands = alps_v3_nibble_commands; 2687 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2688 2689 if (alps_set_defaults_ss4_v2(psmouse, priv)) 2690 return -EIO; 2691 2692 break; 2693 } 2694 2695 return 0; 2696} 2697 2698static const struct alps_protocol_info *alps_match_table(unsigned char *e7, 2699 unsigned char *ec) 2700{ 2701 const struct alps_model_info *model; 2702 int i; 2703 2704 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) { 2705 model = &alps_model_data[i]; 2706 2707 if (!memcmp(e7, model->signature, sizeof(model->signature)) && 2708 (!model->command_mode_resp || 2709 model->command_mode_resp == ec[2])) { 2710 2711 return &model->protocol_info; 2712 } 2713 } 2714 2715 return NULL; 2716} 2717 2718static int alps_identify(struct psmouse *psmouse, struct alps_data *priv) 2719{ 2720 const struct alps_protocol_info *protocol; 2721 unsigned char e6[4], e7[4], ec[4]; 2722 int error; 2723 2724 /* 2725 * First try "E6 report". 2726 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed. 2727 * The bits 0-2 of the first byte will be 1s if some buttons are 2728 * pressed. 2729 */ 2730 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2731 PSMOUSE_CMD_SETSCALE11, e6)) 2732 return -EIO; 2733 2734 if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100)) 2735 return -EINVAL; 2736 2737 /* 2738 * Now get the "E7" and "EC" reports. These will uniquely identify 2739 * most ALPS touchpads. 2740 */ 2741 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2742 PSMOUSE_CMD_SETSCALE21, e7) || 2743 alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2744 PSMOUSE_CMD_RESET_WRAP, ec) || 2745 alps_exit_command_mode(psmouse)) 2746 return -EIO; 2747 2748 protocol = alps_match_table(e7, ec); 2749 if (!protocol) { 2750 if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 && 2751 ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) { 2752 protocol = &alps_v5_protocol_data; 2753 } else if (ec[0] == 0x88 && 2754 ((ec[1] & 0xf0) == 0xb0 || (ec[1] & 0xf0) == 0xc0)) { 2755 protocol = &alps_v7_protocol_data; 2756 } else if (ec[0] == 0x88 && ec[1] == 0x08) { 2757 protocol = &alps_v3_rushmore_data; 2758 } else if (ec[0] == 0x88 && ec[1] == 0x07 && 2759 ec[2] >= 0x90 && ec[2] <= 0x9d) { 2760 protocol = &alps_v3_protocol_data; 2761 } else if (e7[0] == 0x73 && e7[1] == 0x03 && 2762 e7[2] == 0x14 && ec[1] == 0x02) { 2763 protocol = &alps_v8_protocol_data; 2764 } else { 2765 psmouse_dbg(psmouse, 2766 "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec); 2767 return -EINVAL; 2768 } 2769 } 2770 2771 if (priv) { 2772 /* Save the Firmware version */ 2773 memcpy(priv->fw_ver, ec, 3); 2774 error = alps_set_protocol(psmouse, priv, protocol); 2775 if (error) 2776 return error; 2777 } 2778 2779 return 0; 2780} 2781 2782static int alps_reconnect(struct psmouse *psmouse) 2783{ 2784 struct alps_data *priv = psmouse->private; 2785 2786 psmouse_reset(psmouse); 2787 2788 if (alps_identify(psmouse, priv) < 0) 2789 return -1; 2790 2791 return priv->hw_init(psmouse); 2792} 2793 2794static void alps_disconnect(struct psmouse *psmouse) 2795{ 2796 struct alps_data *priv = psmouse->private; 2797 2798 psmouse_reset(psmouse); 2799 del_timer_sync(&priv->timer); 2800 if (priv->dev2) 2801 input_unregister_device(priv->dev2); 2802 if (!IS_ERR_OR_NULL(priv->dev3)) 2803 input_unregister_device(priv->dev3); 2804 kfree(priv); 2805} 2806 2807static void alps_set_abs_params_st(struct alps_data *priv, 2808 struct input_dev *dev1) 2809{ 2810 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0); 2811 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0); 2812 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2813} 2814 2815static void alps_set_abs_params_mt_common(struct alps_data *priv, 2816 struct input_dev *dev1) 2817{ 2818 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0); 2819 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0); 2820 2821 input_abs_set_res(dev1, ABS_MT_POSITION_X, priv->x_res); 2822 input_abs_set_res(dev1, ABS_MT_POSITION_Y, priv->y_res); 2823 2824 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit); 2825 set_bit(BTN_TOOL_QUADTAP, dev1->keybit); 2826} 2827 2828static void alps_set_abs_params_semi_mt(struct alps_data *priv, 2829 struct input_dev *dev1) 2830{ 2831 alps_set_abs_params_mt_common(priv, dev1); 2832 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2833 2834 input_mt_init_slots(dev1, MAX_TOUCHES, 2835 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 2836 INPUT_MT_SEMI_MT); 2837} 2838 2839static void alps_set_abs_params_v7(struct alps_data *priv, 2840 struct input_dev *dev1) 2841{ 2842 alps_set_abs_params_mt_common(priv, dev1); 2843 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2844 2845 input_mt_init_slots(dev1, MAX_TOUCHES, 2846 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 2847 INPUT_MT_TRACK); 2848 2849 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2850} 2851 2852static void alps_set_abs_params_ss4_v2(struct alps_data *priv, 2853 struct input_dev *dev1) 2854{ 2855 alps_set_abs_params_mt_common(priv, dev1); 2856 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2857 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2858 2859 input_mt_init_slots(dev1, MAX_TOUCHES, 2860 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 2861 INPUT_MT_TRACK); 2862} 2863 2864int alps_init(struct psmouse *psmouse) 2865{ 2866 struct alps_data *priv = psmouse->private; 2867 struct input_dev *dev1 = psmouse->dev; 2868 int error; 2869 2870 error = priv->hw_init(psmouse); 2871 if (error) 2872 goto init_fail; 2873 2874 /* 2875 * Undo part of setup done for us by psmouse core since touchpad 2876 * is not a relative device. 2877 */ 2878 __clear_bit(EV_REL, dev1->evbit); 2879 __clear_bit(REL_X, dev1->relbit); 2880 __clear_bit(REL_Y, dev1->relbit); 2881 2882 /* 2883 * Now set up our capabilities. 2884 */ 2885 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY); 2886 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH); 2887 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER); 2888 dev1->keybit[BIT_WORD(BTN_LEFT)] |= 2889 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); 2890 2891 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS); 2892 2893 priv->set_abs_params(priv, dev1); 2894 2895 if (priv->flags & ALPS_WHEEL) { 2896 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL); 2897 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL); 2898 } 2899 2900 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 2901 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD); 2902 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK); 2903 } 2904 2905 if (priv->flags & ALPS_FOUR_BUTTONS) { 2906 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0); 2907 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1); 2908 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2); 2909 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3); 2910 } else if (priv->flags & ALPS_BUTTONPAD) { 2911 set_bit(INPUT_PROP_BUTTONPAD, dev1->propbit); 2912 clear_bit(BTN_RIGHT, dev1->keybit); 2913 } else { 2914 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE); 2915 } 2916 2917 if (priv->flags & ALPS_DUALPOINT) { 2918 struct input_dev *dev2; 2919 2920 dev2 = input_allocate_device(); 2921 if (!dev2) { 2922 psmouse_err(psmouse, 2923 "failed to allocate trackstick device\n"); 2924 error = -ENOMEM; 2925 goto init_fail; 2926 } 2927 2928 snprintf(priv->phys2, sizeof(priv->phys2), "%s/input1", 2929 psmouse->ps2dev.serio->phys); 2930 dev2->phys = priv->phys2; 2931 2932 /* 2933 * format of input device name is: "protocol vendor name" 2934 * see function psmouse_switch_protocol() in psmouse-base.c 2935 */ 2936 dev2->name = "AlpsPS/2 ALPS DualPoint Stick"; 2937 2938 dev2->id.bustype = BUS_I8042; 2939 dev2->id.vendor = 0x0002; 2940 dev2->id.product = PSMOUSE_ALPS; 2941 dev2->id.version = priv->proto_version; 2942 dev2->dev.parent = &psmouse->ps2dev.serio->dev; 2943 2944 input_set_capability(dev2, EV_REL, REL_X); 2945 input_set_capability(dev2, EV_REL, REL_Y); 2946 input_set_capability(dev2, EV_KEY, BTN_LEFT); 2947 input_set_capability(dev2, EV_KEY, BTN_RIGHT); 2948 input_set_capability(dev2, EV_KEY, BTN_MIDDLE); 2949 2950 __set_bit(INPUT_PROP_POINTER, dev2->propbit); 2951 __set_bit(INPUT_PROP_POINTING_STICK, dev2->propbit); 2952 2953 error = input_register_device(dev2); 2954 if (error) { 2955 psmouse_err(psmouse, 2956 "failed to register trackstick device: %d\n", 2957 error); 2958 input_free_device(dev2); 2959 goto init_fail; 2960 } 2961 2962 priv->dev2 = dev2; 2963 } 2964 2965 priv->psmouse = psmouse; 2966 2967 INIT_DELAYED_WORK(&priv->dev3_register_work, 2968 alps_register_bare_ps2_mouse); 2969 2970 psmouse->protocol_handler = alps_process_byte; 2971 psmouse->poll = alps_poll; 2972 psmouse->disconnect = alps_disconnect; 2973 psmouse->reconnect = alps_reconnect; 2974 psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6; 2975 2976 /* We are having trouble resyncing ALPS touchpads so disable it for now */ 2977 psmouse->resync_time = 0; 2978 2979 /* Allow 2 invalid packets without resetting device */ 2980 psmouse->resetafter = psmouse->pktsize * 2; 2981 2982 return 0; 2983 2984init_fail: 2985 psmouse_reset(psmouse); 2986 /* 2987 * Even though we did not allocate psmouse->private we do free 2988 * it here. 2989 */ 2990 kfree(psmouse->private); 2991 psmouse->private = NULL; 2992 return error; 2993} 2994 2995int alps_detect(struct psmouse *psmouse, bool set_properties) 2996{ 2997 struct alps_data *priv; 2998 int error; 2999 3000 error = alps_identify(psmouse, NULL); 3001 if (error) 3002 return error; 3003 3004 /* 3005 * Reset the device to make sure it is fully operational: 3006 * on some laptops, like certain Dell Latitudes, we may 3007 * fail to properly detect presence of trackstick if device 3008 * has not been reset. 3009 */ 3010 psmouse_reset(psmouse); 3011 3012 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL); 3013 if (!priv) 3014 return -ENOMEM; 3015 3016 error = alps_identify(psmouse, priv); 3017 if (error) { 3018 kfree(priv); 3019 return error; 3020 } 3021 3022 if (set_properties) { 3023 psmouse->vendor = "ALPS"; 3024 psmouse->name = priv->flags & ALPS_DUALPOINT ? 3025 "DualPoint TouchPad" : "GlidePoint"; 3026 psmouse->model = priv->proto_version; 3027 } else { 3028 /* 3029 * Destroy alps_data structure we allocated earlier since 3030 * this was just a "trial run". Otherwise we'll keep it 3031 * to be used by alps_init() which has to be called if 3032 * we succeed and set_properties is true. 3033 */ 3034 kfree(priv); 3035 psmouse->private = NULL; 3036 } 3037 3038 return 0; 3039} 3040 3041