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_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} 350 351/* 352 * Process bitmap data for V5 protocols. Return value is null. 353 * 354 * The bitmaps don't have enough data to track fingers, so this function 355 * only generates points representing a bounding box of at most two contacts. 356 * These two points are returned in fields->mt. 357 */ 358static void alps_process_bitmap_dolphin(struct alps_data *priv, 359 struct alps_fields *fields) 360{ 361 int box_middle_x, box_middle_y; 362 unsigned int x_map, y_map; 363 unsigned char start_bit, end_bit; 364 unsigned char x_msb, x_lsb, y_msb, y_lsb; 365 366 x_map = fields->x_map; 367 y_map = fields->y_map; 368 369 if (!x_map || !y_map) 370 return; 371 372 /* Get Most-significant and Least-significant bit */ 373 x_msb = fls(x_map); 374 x_lsb = ffs(x_map); 375 y_msb = fls(y_map); 376 y_lsb = ffs(y_map); 377 378 /* Most-significant bit should never exceed max sensor line number */ 379 if (x_msb > priv->x_bits || y_msb > priv->y_bits) 380 return; 381 382 if (fields->fingers > 1) { 383 start_bit = priv->x_bits - x_msb; 384 end_bit = priv->x_bits - x_lsb; 385 box_middle_x = (priv->x_max * (start_bit + end_bit)) / 386 (2 * (priv->x_bits - 1)); 387 388 start_bit = y_lsb - 1; 389 end_bit = y_msb - 1; 390 box_middle_y = (priv->y_max * (start_bit + end_bit)) / 391 (2 * (priv->y_bits - 1)); 392 fields->mt[0] = fields->st; 393 fields->mt[1].x = 2 * box_middle_x - fields->mt[0].x; 394 fields->mt[1].y = 2 * box_middle_y - fields->mt[0].y; 395 } 396} 397 398static void alps_get_bitmap_points(unsigned int map, 399 struct alps_bitmap_point *low, 400 struct alps_bitmap_point *high, 401 int *fingers) 402{ 403 struct alps_bitmap_point *point; 404 int i, bit, prev_bit = 0; 405 406 point = low; 407 for (i = 0; map != 0; i++, map >>= 1) { 408 bit = map & 1; 409 if (bit) { 410 if (!prev_bit) { 411 point->start_bit = i; 412 point->num_bits = 0; 413 (*fingers)++; 414 } 415 point->num_bits++; 416 } else { 417 if (prev_bit) 418 point = high; 419 } 420 prev_bit = bit; 421 } 422} 423 424/* 425 * Process bitmap data from v3 and v4 protocols. Returns the number of 426 * fingers detected. A return value of 0 means at least one of the 427 * bitmaps was empty. 428 * 429 * The bitmaps don't have enough data to track fingers, so this function 430 * only generates points representing a bounding box of all contacts. 431 * These points are returned in fields->mt when the return value 432 * is greater than 0. 433 */ 434static int alps_process_bitmap(struct alps_data *priv, 435 struct alps_fields *fields) 436{ 437 int i, fingers_x = 0, fingers_y = 0, fingers; 438 struct alps_bitmap_point x_low = {0,}, x_high = {0,}; 439 struct alps_bitmap_point y_low = {0,}, y_high = {0,}; 440 441 if (!fields->x_map || !fields->y_map) 442 return 0; 443 444 alps_get_bitmap_points(fields->x_map, &x_low, &x_high, &fingers_x); 445 alps_get_bitmap_points(fields->y_map, &y_low, &y_high, &fingers_y); 446 447 /* 448 * Fingers can overlap, so we use the maximum count of fingers 449 * on either axis as the finger count. 450 */ 451 fingers = max(fingers_x, fingers_y); 452 453 /* 454 * If an axis reports only a single contact, we have overlapping or 455 * adjacent fingers. Divide the single contact between the two points. 456 */ 457 if (fingers_x == 1) { 458 i = (x_low.num_bits - 1) / 2; 459 x_low.num_bits = x_low.num_bits - i; 460 x_high.start_bit = x_low.start_bit + i; 461 x_high.num_bits = max(i, 1); 462 } 463 if (fingers_y == 1) { 464 i = (y_low.num_bits - 1) / 2; 465 y_low.num_bits = y_low.num_bits - i; 466 y_high.start_bit = y_low.start_bit + i; 467 y_high.num_bits = max(i, 1); 468 } 469 470 fields->mt[0].x = 471 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) / 472 (2 * (priv->x_bits - 1)); 473 fields->mt[0].y = 474 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) / 475 (2 * (priv->y_bits - 1)); 476 477 fields->mt[1].x = 478 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) / 479 (2 * (priv->x_bits - 1)); 480 fields->mt[1].y = 481 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) / 482 (2 * (priv->y_bits - 1)); 483 484 /* y-bitmap order is reversed, except on rushmore */ 485 if (priv->proto_version != ALPS_PROTO_V3_RUSHMORE) { 486 fields->mt[0].y = priv->y_max - fields->mt[0].y; 487 fields->mt[1].y = priv->y_max - fields->mt[1].y; 488 } 489 490 return fingers; 491} 492 493static void alps_set_slot(struct input_dev *dev, int slot, int x, int y) 494{ 495 input_mt_slot(dev, slot); 496 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); 497 input_report_abs(dev, ABS_MT_POSITION_X, x); 498 input_report_abs(dev, ABS_MT_POSITION_Y, y); 499} 500 501static void alps_report_mt_data(struct psmouse *psmouse, int n) 502{ 503 struct alps_data *priv = psmouse->private; 504 struct input_dev *dev = psmouse->dev; 505 struct alps_fields *f = &priv->f; 506 int i, slot[MAX_TOUCHES]; 507 508 input_mt_assign_slots(dev, slot, f->mt, n, 0); 509 for (i = 0; i < n; i++) 510 alps_set_slot(dev, slot[i], f->mt[i].x, f->mt[i].y); 511 512 input_mt_sync_frame(dev); 513} 514 515static void alps_report_semi_mt_data(struct psmouse *psmouse, int fingers) 516{ 517 struct alps_data *priv = psmouse->private; 518 struct input_dev *dev = psmouse->dev; 519 struct alps_fields *f = &priv->f; 520 521 /* Use st data when we don't have mt data */ 522 if (fingers < 2) { 523 f->mt[0].x = f->st.x; 524 f->mt[0].y = f->st.y; 525 fingers = f->pressure > 0 ? 1 : 0; 526 } 527 528 alps_report_mt_data(psmouse, (fingers <= 2) ? fingers : 2); 529 530 input_mt_report_finger_count(dev, fingers); 531 532 input_report_key(dev, BTN_LEFT, f->left); 533 input_report_key(dev, BTN_RIGHT, f->right); 534 input_report_key(dev, BTN_MIDDLE, f->middle); 535 536 input_report_abs(dev, ABS_PRESSURE, f->pressure); 537 538 input_sync(dev); 539} 540 541static void alps_process_trackstick_packet_v3(struct psmouse *psmouse) 542{ 543 struct alps_data *priv = psmouse->private; 544 unsigned char *packet = psmouse->packet; 545 struct input_dev *dev = priv->dev2; 546 int x, y, z, left, right, middle; 547 548 /* It should be a DualPoint when received trackstick packet */ 549 if (!(priv->flags & ALPS_DUALPOINT)) { 550 psmouse_warn(psmouse, 551 "Rejected trackstick packet from non DualPoint device"); 552 return; 553 } 554 555 /* Sanity check packet */ 556 if (!(packet[0] & 0x40)) { 557 psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n"); 558 return; 559 } 560 561 /* 562 * There's a special packet that seems to indicate the end 563 * of a stream of trackstick data. Filter these out. 564 */ 565 if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f) 566 return; 567 568 x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f)); 569 y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f)); 570 z = (packet[4] & 0x7c) >> 2; 571 572 /* 573 * The x and y values tend to be quite large, and when used 574 * alone the trackstick is difficult to use. Scale them down 575 * to compensate. 576 */ 577 x /= 8; 578 y /= 8; 579 580 input_report_rel(dev, REL_X, x); 581 input_report_rel(dev, REL_Y, -y); 582 583 /* 584 * Most ALPS models report the trackstick buttons in the touchpad 585 * packets, but a few report them here. No reliable way has been 586 * found to differentiate between the models upfront, so we enable 587 * the quirk in response to seeing a button press in the trackstick 588 * packet. 589 */ 590 left = packet[3] & 0x01; 591 right = packet[3] & 0x02; 592 middle = packet[3] & 0x04; 593 594 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) && 595 (left || right || middle)) 596 priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS; 597 598 if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) { 599 input_report_key(dev, BTN_LEFT, left); 600 input_report_key(dev, BTN_RIGHT, right); 601 input_report_key(dev, BTN_MIDDLE, middle); 602 } 603 604 input_sync(dev); 605 return; 606} 607 608static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p) 609{ 610 f->left = !!(p[3] & 0x01); 611 f->right = !!(p[3] & 0x02); 612 f->middle = !!(p[3] & 0x04); 613 614 f->ts_left = !!(p[3] & 0x10); 615 f->ts_right = !!(p[3] & 0x20); 616 f->ts_middle = !!(p[3] & 0x40); 617} 618 619static int alps_decode_pinnacle(struct alps_fields *f, unsigned char *p, 620 struct psmouse *psmouse) 621{ 622 f->first_mp = !!(p[4] & 0x40); 623 f->is_mp = !!(p[0] & 0x40); 624 625 f->fingers = (p[5] & 0x3) + 1; 626 f->x_map = ((p[4] & 0x7e) << 8) | 627 ((p[1] & 0x7f) << 2) | 628 ((p[0] & 0x30) >> 4); 629 f->y_map = ((p[3] & 0x70) << 4) | 630 ((p[2] & 0x7f) << 1) | 631 (p[4] & 0x01); 632 633 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | 634 ((p[0] & 0x30) >> 4); 635 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); 636 f->pressure = p[5] & 0x7f; 637 638 alps_decode_buttons_v3(f, p); 639 640 return 0; 641} 642 643static int alps_decode_rushmore(struct alps_fields *f, unsigned char *p, 644 struct psmouse *psmouse) 645{ 646 alps_decode_pinnacle(f, p, psmouse); 647 648 /* Rushmore's packet decode has a bit difference with Pinnacle's */ 649 f->is_mp = !!(p[5] & 0x40); 650 f->fingers = max((p[5] & 0x3), ((p[5] >> 2) & 0x3)) + 1; 651 f->x_map |= (p[5] & 0x10) << 11; 652 f->y_map |= (p[5] & 0x20) << 6; 653 654 return 0; 655} 656 657static int alps_decode_dolphin(struct alps_fields *f, unsigned char *p, 658 struct psmouse *psmouse) 659{ 660 u64 palm_data = 0; 661 struct alps_data *priv = psmouse->private; 662 663 f->first_mp = !!(p[0] & 0x02); 664 f->is_mp = !!(p[0] & 0x20); 665 666 if (!f->is_mp) { 667 f->st.x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7)); 668 f->st.y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3)); 669 f->pressure = (p[0] & 4) ? 0 : p[5] & 0x7f; 670 alps_decode_buttons_v3(f, p); 671 } else { 672 f->fingers = ((p[0] & 0x6) >> 1 | 673 (p[0] & 0x10) >> 2); 674 675 palm_data = (p[1] & 0x7f) | 676 ((p[2] & 0x7f) << 7) | 677 ((p[4] & 0x7f) << 14) | 678 ((p[5] & 0x7f) << 21) | 679 ((p[3] & 0x07) << 28) | 680 (((u64)p[3] & 0x70) << 27) | 681 (((u64)p[0] & 0x01) << 34); 682 683 /* Y-profile is stored in P(0) to p(n-1), n = y_bits; */ 684 f->y_map = palm_data & (BIT(priv->y_bits) - 1); 685 686 /* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */ 687 f->x_map = (palm_data >> priv->y_bits) & 688 (BIT(priv->x_bits) - 1); 689 } 690 691 return 0; 692} 693 694static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse) 695{ 696 struct alps_data *priv = psmouse->private; 697 unsigned char *packet = psmouse->packet; 698 struct input_dev *dev2 = priv->dev2; 699 struct alps_fields *f = &priv->f; 700 int fingers = 0; 701 702 memset(f, 0, sizeof(*f)); 703 704 priv->decode_fields(f, packet, psmouse); 705 706 /* 707 * There's no single feature of touchpad position and bitmap packets 708 * that can be used to distinguish between them. We rely on the fact 709 * that a bitmap packet should always follow a position packet with 710 * bit 6 of packet[4] set. 711 */ 712 if (priv->multi_packet) { 713 /* 714 * Sometimes a position packet will indicate a multi-packet 715 * sequence, but then what follows is another position 716 * packet. Check for this, and when it happens process the 717 * position packet as usual. 718 */ 719 if (f->is_mp) { 720 fingers = f->fingers; 721 if (priv->proto_version == ALPS_PROTO_V3 || 722 priv->proto_version == ALPS_PROTO_V3_RUSHMORE) { 723 if (alps_process_bitmap(priv, f) == 0) 724 fingers = 0; /* Use st data */ 725 726 /* Now process position packet */ 727 priv->decode_fields(f, priv->multi_data, 728 psmouse); 729 } else { 730 /* 731 * Because Dolphin uses position packet's 732 * coordinate data as Pt1 and uses it to 733 * calculate Pt2, so we need to do position 734 * packet decode first. 735 */ 736 priv->decode_fields(f, priv->multi_data, 737 psmouse); 738 739 /* 740 * Since Dolphin's finger number is reliable, 741 * there is no need to compare with bmap_fn. 742 */ 743 alps_process_bitmap_dolphin(priv, f); 744 } 745 } else { 746 priv->multi_packet = 0; 747 } 748 } 749 750 /* 751 * Bit 6 of byte 0 is not usually set in position packets. The only 752 * times it seems to be set is in situations where the data is 753 * suspect anyway, e.g. a palm resting flat on the touchpad. Given 754 * this combined with the fact that this bit is useful for filtering 755 * out misidentified bitmap packets, we reject anything with this 756 * bit set. 757 */ 758 if (f->is_mp) 759 return; 760 761 if (!priv->multi_packet && f->first_mp) { 762 priv->multi_packet = 1; 763 memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); 764 return; 765 } 766 767 priv->multi_packet = 0; 768 769 /* 770 * Sometimes the hardware sends a single packet with z = 0 771 * in the middle of a stream. Real releases generate packets 772 * with x, y, and z all zero, so these seem to be flukes. 773 * Ignore them. 774 */ 775 if (f->st.x && f->st.y && !f->pressure) 776 return; 777 778 alps_report_semi_mt_data(psmouse, fingers); 779 780 if ((priv->flags & ALPS_DUALPOINT) && 781 !(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) { 782 input_report_key(dev2, BTN_LEFT, f->ts_left); 783 input_report_key(dev2, BTN_RIGHT, f->ts_right); 784 input_report_key(dev2, BTN_MIDDLE, f->ts_middle); 785 input_sync(dev2); 786 } 787} 788 789static void alps_process_packet_v3(struct psmouse *psmouse) 790{ 791 unsigned char *packet = psmouse->packet; 792 793 /* 794 * v3 protocol packets come in three types, two representing 795 * touchpad data and one representing trackstick data. 796 * Trackstick packets seem to be distinguished by always 797 * having 0x3f in the last byte. This value has never been 798 * observed in the last byte of either of the other types 799 * of packets. 800 */ 801 if (packet[5] == 0x3f) { 802 alps_process_trackstick_packet_v3(psmouse); 803 return; 804 } 805 806 alps_process_touchpad_packet_v3_v5(psmouse); 807} 808 809static void alps_process_packet_v6(struct psmouse *psmouse) 810{ 811 struct alps_data *priv = psmouse->private; 812 unsigned char *packet = psmouse->packet; 813 struct input_dev *dev = psmouse->dev; 814 struct input_dev *dev2 = priv->dev2; 815 int x, y, z, left, right, middle; 816 817 /* 818 * We can use Byte5 to distinguish if the packet is from Touchpad 819 * or Trackpoint. 820 * Touchpad: 0 - 0x7E 821 * Trackpoint: 0x7F 822 */ 823 if (packet[5] == 0x7F) { 824 /* It should be a DualPoint when received Trackpoint packet */ 825 if (!(priv->flags & ALPS_DUALPOINT)) { 826 psmouse_warn(psmouse, 827 "Rejected trackstick packet from non DualPoint device"); 828 return; 829 } 830 831 /* Trackpoint packet */ 832 x = packet[1] | ((packet[3] & 0x20) << 2); 833 y = packet[2] | ((packet[3] & 0x40) << 1); 834 z = packet[4]; 835 left = packet[3] & 0x01; 836 right = packet[3] & 0x02; 837 middle = packet[3] & 0x04; 838 839 /* To prevent the cursor jump when finger lifted */ 840 if (x == 0x7F && y == 0x7F && z == 0x7F) 841 x = y = z = 0; 842 843 /* Divide 4 since trackpoint's speed is too fast */ 844 input_report_rel(dev2, REL_X, (char)x / 4); 845 input_report_rel(dev2, REL_Y, -((char)y / 4)); 846 847 input_report_key(dev2, BTN_LEFT, left); 848 input_report_key(dev2, BTN_RIGHT, right); 849 input_report_key(dev2, BTN_MIDDLE, middle); 850 851 input_sync(dev2); 852 return; 853 } 854 855 /* Touchpad packet */ 856 x = packet[1] | ((packet[3] & 0x78) << 4); 857 y = packet[2] | ((packet[4] & 0x78) << 4); 858 z = packet[5]; 859 left = packet[3] & 0x01; 860 right = packet[3] & 0x02; 861 862 if (z > 30) 863 input_report_key(dev, BTN_TOUCH, 1); 864 if (z < 25) 865 input_report_key(dev, BTN_TOUCH, 0); 866 867 if (z > 0) { 868 input_report_abs(dev, ABS_X, x); 869 input_report_abs(dev, ABS_Y, y); 870 } 871 872 input_report_abs(dev, ABS_PRESSURE, z); 873 input_report_key(dev, BTN_TOOL_FINGER, z > 0); 874 875 /* v6 touchpad does not have middle button */ 876 input_report_key(dev, BTN_LEFT, left); 877 input_report_key(dev, BTN_RIGHT, right); 878 879 input_sync(dev); 880} 881 882static void alps_process_packet_v4(struct psmouse *psmouse) 883{ 884 struct alps_data *priv = psmouse->private; 885 unsigned char *packet = psmouse->packet; 886 struct alps_fields *f = &priv->f; 887 int offset; 888 889 /* 890 * v4 has a 6-byte encoding for bitmap data, but this data is 891 * broken up between 3 normal packets. Use priv->multi_packet to 892 * track our position in the bitmap packet. 893 */ 894 if (packet[6] & 0x40) { 895 /* sync, reset position */ 896 priv->multi_packet = 0; 897 } 898 899 if (WARN_ON_ONCE(priv->multi_packet > 2)) 900 return; 901 902 offset = 2 * priv->multi_packet; 903 priv->multi_data[offset] = packet[6]; 904 priv->multi_data[offset + 1] = packet[7]; 905 906 if (++priv->multi_packet > 2) { 907 priv->multi_packet = 0; 908 909 f->x_map = ((priv->multi_data[2] & 0x1f) << 10) | 910 ((priv->multi_data[3] & 0x60) << 3) | 911 ((priv->multi_data[0] & 0x3f) << 2) | 912 ((priv->multi_data[1] & 0x60) >> 5); 913 f->y_map = ((priv->multi_data[5] & 0x01) << 10) | 914 ((priv->multi_data[3] & 0x1f) << 5) | 915 (priv->multi_data[1] & 0x1f); 916 917 f->fingers = alps_process_bitmap(priv, f); 918 } 919 920 f->left = !!(packet[4] & 0x01); 921 f->right = !!(packet[4] & 0x02); 922 923 f->st.x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) | 924 ((packet[0] & 0x30) >> 4); 925 f->st.y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f); 926 f->pressure = packet[5] & 0x7f; 927 928 alps_report_semi_mt_data(psmouse, f->fingers); 929} 930 931static bool alps_is_valid_package_v7(struct psmouse *psmouse) 932{ 933 switch (psmouse->pktcnt) { 934 case 3: 935 return (psmouse->packet[2] & 0x40) == 0x40; 936 case 4: 937 return (psmouse->packet[3] & 0x48) == 0x48; 938 case 6: 939 return (psmouse->packet[5] & 0x40) == 0x00; 940 } 941 return true; 942} 943 944static unsigned char alps_get_packet_id_v7(char *byte) 945{ 946 unsigned char packet_id; 947 948 if (byte[4] & 0x40) 949 packet_id = V7_PACKET_ID_TWO; 950 else if (byte[4] & 0x01) 951 packet_id = V7_PACKET_ID_MULTI; 952 else if ((byte[0] & 0x10) && !(byte[4] & 0x43)) 953 packet_id = V7_PACKET_ID_NEW; 954 else if (byte[1] == 0x00 && byte[4] == 0x00) 955 packet_id = V7_PACKET_ID_IDLE; 956 else 957 packet_id = V7_PACKET_ID_UNKNOWN; 958 959 return packet_id; 960} 961 962static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt, 963 unsigned char *pkt, 964 unsigned char pkt_id) 965{ 966 mt[0].x = ((pkt[2] & 0x80) << 4); 967 mt[0].x |= ((pkt[2] & 0x3F) << 5); 968 mt[0].x |= ((pkt[3] & 0x30) >> 1); 969 mt[0].x |= (pkt[3] & 0x07); 970 mt[0].y = (pkt[1] << 3) | (pkt[0] & 0x07); 971 972 mt[1].x = ((pkt[3] & 0x80) << 4); 973 mt[1].x |= ((pkt[4] & 0x80) << 3); 974 mt[1].x |= ((pkt[4] & 0x3F) << 4); 975 mt[1].y = ((pkt[5] & 0x80) << 3); 976 mt[1].y |= ((pkt[5] & 0x3F) << 4); 977 978 switch (pkt_id) { 979 case V7_PACKET_ID_TWO: 980 mt[1].x &= ~0x000F; 981 mt[1].y |= 0x000F; 982 /* Detect false-postive touches where x & y report max value */ 983 if (mt[1].y == 0x7ff && mt[1].x == 0xff0) { 984 mt[1].x = 0; 985 /* y gets set to 0 at the end of this function */ 986 } 987 break; 988 989 case V7_PACKET_ID_MULTI: 990 mt[1].x &= ~0x003F; 991 mt[1].y &= ~0x0020; 992 mt[1].y |= ((pkt[4] & 0x02) << 4); 993 mt[1].y |= 0x001F; 994 break; 995 996 case V7_PACKET_ID_NEW: 997 mt[1].x &= ~0x003F; 998 mt[1].x |= (pkt[0] & 0x20); 999 mt[1].y |= 0x000F; 1000 break; 1001 } 1002 1003 mt[0].y = 0x7FF - mt[0].y; 1004 mt[1].y = 0x7FF - mt[1].y; 1005} 1006 1007static int alps_get_mt_count(struct input_mt_pos *mt) 1008{ 1009 int i, fingers = 0; 1010 1011 for (i = 0; i < MAX_TOUCHES; i++) { 1012 if (mt[i].x != 0 || mt[i].y != 0) 1013 fingers++; 1014 } 1015 1016 return fingers; 1017} 1018 1019static int alps_decode_packet_v7(struct alps_fields *f, 1020 unsigned char *p, 1021 struct psmouse *psmouse) 1022{ 1023 struct alps_data *priv = psmouse->private; 1024 unsigned char pkt_id; 1025 1026 pkt_id = alps_get_packet_id_v7(p); 1027 if (pkt_id == V7_PACKET_ID_IDLE) 1028 return 0; 1029 if (pkt_id == V7_PACKET_ID_UNKNOWN) 1030 return -1; 1031 /* 1032 * NEW packets are send to indicate a discontinuity in the finger 1033 * coordinate reporting. Specifically a finger may have moved from 1034 * slot 0 to 1 or vice versa. INPUT_MT_TRACK takes care of this for 1035 * us. 1036 * 1037 * NEW packets have 3 problems: 1038 * 1) They do not contain middle / right button info (on non clickpads) 1039 * this can be worked around by preserving the old button state 1040 * 2) They do not contain an accurate fingercount, and they are 1041 * typically send when the number of fingers changes. We cannot use 1042 * the old finger count as that may mismatch with the amount of 1043 * touch coordinates we've available in the NEW packet 1044 * 3) Their x data for the second touch is inaccurate leading to 1045 * a possible jump of the x coordinate by 16 units when the first 1046 * non NEW packet comes in 1047 * Since problems 2 & 3 cannot be worked around, just ignore them. 1048 */ 1049 if (pkt_id == V7_PACKET_ID_NEW) 1050 return 1; 1051 1052 alps_get_finger_coordinate_v7(f->mt, p, pkt_id); 1053 1054 if (pkt_id == V7_PACKET_ID_TWO) 1055 f->fingers = alps_get_mt_count(f->mt); 1056 else /* pkt_id == V7_PACKET_ID_MULTI */ 1057 f->fingers = 3 + (p[5] & 0x03); 1058 1059 f->left = (p[0] & 0x80) >> 7; 1060 if (priv->flags & ALPS_BUTTONPAD) { 1061 if (p[0] & 0x20) 1062 f->fingers++; 1063 if (p[0] & 0x10) 1064 f->fingers++; 1065 } else { 1066 f->right = (p[0] & 0x20) >> 5; 1067 f->middle = (p[0] & 0x10) >> 4; 1068 } 1069 1070 /* Sometimes a single touch is reported in mt[1] rather then mt[0] */ 1071 if (f->fingers == 1 && f->mt[0].x == 0 && f->mt[0].y == 0) { 1072 f->mt[0].x = f->mt[1].x; 1073 f->mt[0].y = f->mt[1].y; 1074 f->mt[1].x = 0; 1075 f->mt[1].y = 0; 1076 } 1077 1078 return 0; 1079} 1080 1081static void alps_process_trackstick_packet_v7(struct psmouse *psmouse) 1082{ 1083 struct alps_data *priv = psmouse->private; 1084 unsigned char *packet = psmouse->packet; 1085 struct input_dev *dev2 = priv->dev2; 1086 int x, y, z, left, right, middle; 1087 1088 /* It should be a DualPoint when received trackstick packet */ 1089 if (!(priv->flags & ALPS_DUALPOINT)) { 1090 psmouse_warn(psmouse, 1091 "Rejected trackstick packet from non DualPoint device"); 1092 return; 1093 } 1094 1095 x = ((packet[2] & 0xbf)) | ((packet[3] & 0x10) << 2); 1096 y = (packet[3] & 0x07) | (packet[4] & 0xb8) | 1097 ((packet[3] & 0x20) << 1); 1098 z = (packet[5] & 0x3f) | ((packet[3] & 0x80) >> 1); 1099 1100 left = (packet[1] & 0x01); 1101 right = (packet[1] & 0x02) >> 1; 1102 middle = (packet[1] & 0x04) >> 2; 1103 1104 input_report_rel(dev2, REL_X, (char)x); 1105 input_report_rel(dev2, REL_Y, -((char)y)); 1106 1107 input_report_key(dev2, BTN_LEFT, left); 1108 input_report_key(dev2, BTN_RIGHT, right); 1109 input_report_key(dev2, BTN_MIDDLE, middle); 1110 1111 input_sync(dev2); 1112} 1113 1114static void alps_process_touchpad_packet_v7(struct psmouse *psmouse) 1115{ 1116 struct alps_data *priv = psmouse->private; 1117 struct input_dev *dev = psmouse->dev; 1118 struct alps_fields *f = &priv->f; 1119 1120 memset(f, 0, sizeof(*f)); 1121 1122 if (priv->decode_fields(f, psmouse->packet, psmouse)) 1123 return; 1124 1125 alps_report_mt_data(psmouse, alps_get_mt_count(f->mt)); 1126 1127 input_mt_report_finger_count(dev, f->fingers); 1128 1129 input_report_key(dev, BTN_LEFT, f->left); 1130 input_report_key(dev, BTN_RIGHT, f->right); 1131 input_report_key(dev, BTN_MIDDLE, f->middle); 1132 1133 input_sync(dev); 1134} 1135 1136static void alps_process_packet_v7(struct psmouse *psmouse) 1137{ 1138 unsigned char *packet = psmouse->packet; 1139 1140 if (packet[0] == 0x48 && (packet[4] & 0x47) == 0x06) 1141 alps_process_trackstick_packet_v7(psmouse); 1142 else 1143 alps_process_touchpad_packet_v7(psmouse); 1144} 1145 1146static unsigned char alps_get_pkt_id_ss4_v2(unsigned char *byte) 1147{ 1148 unsigned char pkt_id = SS4_PACKET_ID_IDLE; 1149 1150 if (byte[0] == 0x18 && byte[1] == 0x10 && byte[2] == 0x00 && 1151 (byte[3] & 0x88) == 0x08 && byte[4] == 0x10 && byte[5] == 0x00) { 1152 pkt_id = SS4_PACKET_ID_IDLE; 1153 } else if (!(byte[3] & 0x10)) { 1154 pkt_id = SS4_PACKET_ID_ONE; 1155 } else if (!(byte[3] & 0x20)) { 1156 pkt_id = SS4_PACKET_ID_TWO; 1157 } else { 1158 pkt_id = SS4_PACKET_ID_MULTI; 1159 } 1160 1161 return pkt_id; 1162} 1163 1164static int alps_decode_ss4_v2(struct alps_fields *f, 1165 unsigned char *p, struct psmouse *psmouse) 1166{ 1167 struct alps_data *priv = psmouse->private; 1168 unsigned char pkt_id; 1169 unsigned int no_data_x, no_data_y; 1170 1171 pkt_id = alps_get_pkt_id_ss4_v2(p); 1172 1173 /* Current packet is 1Finger coordinate packet */ 1174 switch (pkt_id) { 1175 case SS4_PACKET_ID_ONE: 1176 f->mt[0].x = SS4_1F_X_V2(p); 1177 f->mt[0].y = SS4_1F_Y_V2(p); 1178 f->pressure = ((SS4_1F_Z_V2(p)) * 2) & 0x7f; 1179 f->fingers = 1; 1180 f->first_mp = 0; 1181 f->is_mp = 0; 1182 break; 1183 1184 case SS4_PACKET_ID_TWO: 1185 if (priv->flags & ALPS_BUTTONPAD) { 1186 f->mt[0].x = SS4_BTL_MF_X_V2(p, 0); 1187 f->mt[0].y = SS4_BTL_MF_Y_V2(p, 0); 1188 f->mt[1].x = SS4_BTL_MF_X_V2(p, 1); 1189 f->mt[1].y = SS4_BTL_MF_Y_V2(p, 1); 1190 } else { 1191 f->mt[0].x = SS4_STD_MF_X_V2(p, 0); 1192 f->mt[0].y = SS4_STD_MF_Y_V2(p, 0); 1193 f->mt[1].x = SS4_STD_MF_X_V2(p, 1); 1194 f->mt[1].y = SS4_STD_MF_Y_V2(p, 1); 1195 } 1196 f->pressure = SS4_MF_Z_V2(p, 0) ? 0x30 : 0; 1197 1198 if (SS4_IS_MF_CONTINUE(p)) { 1199 f->first_mp = 1; 1200 } else { 1201 f->fingers = 2; 1202 f->first_mp = 0; 1203 } 1204 f->is_mp = 0; 1205 1206 break; 1207 1208 case SS4_PACKET_ID_MULTI: 1209 if (priv->flags & ALPS_BUTTONPAD) { 1210 f->mt[2].x = SS4_BTL_MF_X_V2(p, 0); 1211 f->mt[2].y = SS4_BTL_MF_Y_V2(p, 0); 1212 f->mt[3].x = SS4_BTL_MF_X_V2(p, 1); 1213 f->mt[3].y = SS4_BTL_MF_Y_V2(p, 1); 1214 no_data_x = SS4_MFPACKET_NO_AX_BL; 1215 no_data_y = SS4_MFPACKET_NO_AY_BL; 1216 } else { 1217 f->mt[2].x = SS4_STD_MF_X_V2(p, 0); 1218 f->mt[2].y = SS4_STD_MF_Y_V2(p, 0); 1219 f->mt[3].x = SS4_STD_MF_X_V2(p, 1); 1220 f->mt[3].y = SS4_STD_MF_Y_V2(p, 1); 1221 no_data_x = SS4_MFPACKET_NO_AX; 1222 no_data_y = SS4_MFPACKET_NO_AY; 1223 } 1224 1225 f->first_mp = 0; 1226 f->is_mp = 1; 1227 1228 if (SS4_IS_5F_DETECTED(p)) { 1229 f->fingers = 5; 1230 } else if (f->mt[3].x == no_data_x && 1231 f->mt[3].y == no_data_y) { 1232 f->mt[3].x = 0; 1233 f->mt[3].y = 0; 1234 f->fingers = 3; 1235 } else { 1236 f->fingers = 4; 1237 } 1238 break; 1239 1240 case SS4_PACKET_ID_IDLE: 1241 default: 1242 memset(f, 0, sizeof(struct alps_fields)); 1243 break; 1244 } 1245 1246 f->left = !!(SS4_BTN_V2(p) & 0x01); 1247 if (!(priv->flags & ALPS_BUTTONPAD)) { 1248 f->right = !!(SS4_BTN_V2(p) & 0x02); 1249 f->middle = !!(SS4_BTN_V2(p) & 0x04); 1250 } 1251 1252 return 0; 1253} 1254 1255static void alps_process_packet_ss4_v2(struct psmouse *psmouse) 1256{ 1257 struct alps_data *priv = psmouse->private; 1258 unsigned char *packet = psmouse->packet; 1259 struct input_dev *dev = psmouse->dev; 1260 struct alps_fields *f = &priv->f; 1261 1262 memset(f, 0, sizeof(struct alps_fields)); 1263 priv->decode_fields(f, packet, psmouse); 1264 if (priv->multi_packet) { 1265 /* 1266 * Sometimes the first packet will indicate a multi-packet 1267 * sequence, but sometimes the next multi-packet would not 1268 * come. Check for this, and when it happens process the 1269 * position packet as usual. 1270 */ 1271 if (f->is_mp) { 1272 /* Now process the 1st packet */ 1273 priv->decode_fields(f, priv->multi_data, psmouse); 1274 } else { 1275 priv->multi_packet = 0; 1276 } 1277 } 1278 1279 /* 1280 * "f.is_mp" would always be '0' after merging the 1st and 2nd packet. 1281 * When it is set, it means 2nd packet comes without 1st packet come. 1282 */ 1283 if (f->is_mp) 1284 return; 1285 1286 /* Save the first packet */ 1287 if (!priv->multi_packet && f->first_mp) { 1288 priv->multi_packet = 1; 1289 memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); 1290 return; 1291 } 1292 1293 priv->multi_packet = 0; 1294 1295 alps_report_mt_data(psmouse, (f->fingers <= 4) ? f->fingers : 4); 1296 1297 input_mt_report_finger_count(dev, f->fingers); 1298 1299 input_report_key(dev, BTN_LEFT, f->left); 1300 input_report_key(dev, BTN_RIGHT, f->right); 1301 input_report_key(dev, BTN_MIDDLE, f->middle); 1302 1303 input_report_abs(dev, ABS_PRESSURE, f->pressure); 1304 input_sync(dev); 1305} 1306 1307static bool alps_is_valid_package_ss4_v2(struct psmouse *psmouse) 1308{ 1309 if (psmouse->pktcnt == 4 && ((psmouse->packet[3] & 0x08) != 0x08)) 1310 return false; 1311 if (psmouse->pktcnt == 6 && ((psmouse->packet[5] & 0x10) != 0x0)) 1312 return false; 1313 return true; 1314} 1315 1316static DEFINE_MUTEX(alps_mutex); 1317 1318static void alps_register_bare_ps2_mouse(struct work_struct *work) 1319{ 1320 struct alps_data *priv = 1321 container_of(work, struct alps_data, dev3_register_work.work); 1322 struct psmouse *psmouse = priv->psmouse; 1323 struct input_dev *dev3; 1324 int error = 0; 1325 1326 mutex_lock(&alps_mutex); 1327 1328 if (priv->dev3) 1329 goto out; 1330 1331 dev3 = input_allocate_device(); 1332 if (!dev3) { 1333 psmouse_err(psmouse, "failed to allocate secondary device\n"); 1334 error = -ENOMEM; 1335 goto out; 1336 } 1337 1338 snprintf(priv->phys3, sizeof(priv->phys3), "%s/%s", 1339 psmouse->ps2dev.serio->phys, 1340 (priv->dev2 ? "input2" : "input1")); 1341 dev3->phys = priv->phys3; 1342 1343 /* 1344 * format of input device name is: "protocol vendor name" 1345 * see function psmouse_switch_protocol() in psmouse-base.c 1346 */ 1347 dev3->name = "PS/2 ALPS Mouse"; 1348 1349 dev3->id.bustype = BUS_I8042; 1350 dev3->id.vendor = 0x0002; 1351 dev3->id.product = PSMOUSE_PS2; 1352 dev3->id.version = 0x0000; 1353 dev3->dev.parent = &psmouse->ps2dev.serio->dev; 1354 1355 input_set_capability(dev3, EV_REL, REL_X); 1356 input_set_capability(dev3, EV_REL, REL_Y); 1357 input_set_capability(dev3, EV_KEY, BTN_LEFT); 1358 input_set_capability(dev3, EV_KEY, BTN_RIGHT); 1359 input_set_capability(dev3, EV_KEY, BTN_MIDDLE); 1360 1361 __set_bit(INPUT_PROP_POINTER, dev3->propbit); 1362 1363 error = input_register_device(dev3); 1364 if (error) { 1365 psmouse_err(psmouse, 1366 "failed to register secondary device: %d\n", 1367 error); 1368 input_free_device(dev3); 1369 goto out; 1370 } 1371 1372 priv->dev3 = dev3; 1373 1374out: 1375 /* 1376 * Save the error code so that we can detect that we 1377 * already tried to create the device. 1378 */ 1379 if (error) 1380 priv->dev3 = ERR_PTR(error); 1381 1382 mutex_unlock(&alps_mutex); 1383} 1384 1385static void alps_report_bare_ps2_packet(struct psmouse *psmouse, 1386 unsigned char packet[], 1387 bool report_buttons) 1388{ 1389 struct alps_data *priv = psmouse->private; 1390 struct input_dev *dev, *dev2 = NULL; 1391 1392 /* Figure out which device to use to report the bare packet */ 1393 if (priv->proto_version == ALPS_PROTO_V2 && 1394 (priv->flags & ALPS_DUALPOINT)) { 1395 /* On V2 devices the DualPoint Stick reports bare packets */ 1396 dev = priv->dev2; 1397 dev2 = psmouse->dev; 1398 } else if (unlikely(IS_ERR_OR_NULL(priv->dev3))) { 1399 /* Register dev3 mouse if we received PS/2 packet first time */ 1400 if (!IS_ERR(priv->dev3)) 1401 psmouse_queue_work(psmouse, &priv->dev3_register_work, 1402 0); 1403 return; 1404 } else { 1405 dev = priv->dev3; 1406 } 1407 1408 if (report_buttons) 1409 alps_report_buttons(dev, dev2, 1410 packet[0] & 1, packet[0] & 2, packet[0] & 4); 1411 1412 input_report_rel(dev, REL_X, 1413 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0); 1414 input_report_rel(dev, REL_Y, 1415 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0); 1416 1417 input_sync(dev); 1418} 1419 1420static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse) 1421{ 1422 struct alps_data *priv = psmouse->private; 1423 1424 if (psmouse->pktcnt < 6) 1425 return PSMOUSE_GOOD_DATA; 1426 1427 if (psmouse->pktcnt == 6) { 1428 /* 1429 * Start a timer to flush the packet if it ends up last 1430 * 6-byte packet in the stream. Timer needs to fire 1431 * psmouse core times out itself. 20 ms should be enough 1432 * to decide if we are getting more data or not. 1433 */ 1434 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20)); 1435 return PSMOUSE_GOOD_DATA; 1436 } 1437 1438 del_timer(&priv->timer); 1439 1440 if (psmouse->packet[6] & 0x80) { 1441 1442 /* 1443 * Highest bit is set - that means we either had 1444 * complete ALPS packet and this is start of the 1445 * next packet or we got garbage. 1446 */ 1447 1448 if (((psmouse->packet[3] | 1449 psmouse->packet[4] | 1450 psmouse->packet[5]) & 0x80) || 1451 (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) { 1452 psmouse_dbg(psmouse, 1453 "refusing packet %4ph (suspected interleaved ps/2)\n", 1454 psmouse->packet + 3); 1455 return PSMOUSE_BAD_DATA; 1456 } 1457 1458 priv->process_packet(psmouse); 1459 1460 /* Continue with the next packet */ 1461 psmouse->packet[0] = psmouse->packet[6]; 1462 psmouse->pktcnt = 1; 1463 1464 } else { 1465 1466 /* 1467 * High bit is 0 - that means that we indeed got a PS/2 1468 * packet in the middle of ALPS packet. 1469 * 1470 * There is also possibility that we got 6-byte ALPS 1471 * packet followed by 3-byte packet from trackpoint. We 1472 * can not distinguish between these 2 scenarios but 1473 * because the latter is unlikely to happen in course of 1474 * normal operation (user would need to press all 1475 * buttons on the pad and start moving trackpoint 1476 * without touching the pad surface) we assume former. 1477 * Even if we are wrong the wost thing that would happen 1478 * the cursor would jump but we should not get protocol 1479 * de-synchronization. 1480 */ 1481 1482 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3], 1483 false); 1484 1485 /* 1486 * Continue with the standard ALPS protocol handling, 1487 * but make sure we won't process it as an interleaved 1488 * packet again, which may happen if all buttons are 1489 * pressed. To avoid this let's reset the 4th bit which 1490 * is normally 1. 1491 */ 1492 psmouse->packet[3] = psmouse->packet[6] & 0xf7; 1493 psmouse->pktcnt = 4; 1494 } 1495 1496 return PSMOUSE_GOOD_DATA; 1497} 1498 1499static void alps_flush_packet(unsigned long data) 1500{ 1501 struct psmouse *psmouse = (struct psmouse *)data; 1502 struct alps_data *priv = psmouse->private; 1503 1504 serio_pause_rx(psmouse->ps2dev.serio); 1505 1506 if (psmouse->pktcnt == psmouse->pktsize) { 1507 1508 /* 1509 * We did not any more data in reasonable amount of time. 1510 * Validate the last 3 bytes and process as a standard 1511 * ALPS packet. 1512 */ 1513 if ((psmouse->packet[3] | 1514 psmouse->packet[4] | 1515 psmouse->packet[5]) & 0x80) { 1516 psmouse_dbg(psmouse, 1517 "refusing packet %3ph (suspected interleaved ps/2)\n", 1518 psmouse->packet + 3); 1519 } else { 1520 priv->process_packet(psmouse); 1521 } 1522 psmouse->pktcnt = 0; 1523 } 1524 1525 serio_continue_rx(psmouse->ps2dev.serio); 1526} 1527 1528static psmouse_ret_t alps_process_byte(struct psmouse *psmouse) 1529{ 1530 struct alps_data *priv = psmouse->private; 1531 1532 /* 1533 * Check if we are dealing with a bare PS/2 packet, presumably from 1534 * a device connected to the external PS/2 port. Because bare PS/2 1535 * protocol does not have enough constant bits to self-synchronize 1536 * properly we only do this if the device is fully synchronized. 1537 * Can not distinguish V8's first byte from PS/2 packet's 1538 */ 1539 if (priv->proto_version != ALPS_PROTO_V8 && 1540 !psmouse->out_of_sync_cnt && 1541 (psmouse->packet[0] & 0xc8) == 0x08) { 1542 1543 if (psmouse->pktcnt == 3) { 1544 alps_report_bare_ps2_packet(psmouse, psmouse->packet, 1545 true); 1546 return PSMOUSE_FULL_PACKET; 1547 } 1548 return PSMOUSE_GOOD_DATA; 1549 } 1550 1551 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */ 1552 1553 if ((priv->flags & ALPS_PS2_INTERLEAVED) && 1554 psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) { 1555 return alps_handle_interleaved_ps2(psmouse); 1556 } 1557 1558 if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) { 1559 psmouse_dbg(psmouse, 1560 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n", 1561 psmouse->packet[0], priv->mask0, priv->byte0); 1562 return PSMOUSE_BAD_DATA; 1563 } 1564 1565 /* Bytes 2 - pktsize should have 0 in the highest bit */ 1566 if (priv->proto_version < ALPS_PROTO_V5 && 1567 psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize && 1568 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) { 1569 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1570 psmouse->pktcnt - 1, 1571 psmouse->packet[psmouse->pktcnt - 1]); 1572 1573 if (priv->proto_version == ALPS_PROTO_V3_RUSHMORE && 1574 psmouse->pktcnt == psmouse->pktsize) { 1575 /* 1576 * Some Dell boxes, such as Latitude E6440 or E7440 1577 * with closed lid, quite often smash last byte of 1578 * otherwise valid packet with 0xff. Given that the 1579 * next packet is very likely to be valid let's 1580 * report PSMOUSE_FULL_PACKET but not process data, 1581 * rather than reporting PSMOUSE_BAD_DATA and 1582 * filling the logs. 1583 */ 1584 return PSMOUSE_FULL_PACKET; 1585 } 1586 1587 return PSMOUSE_BAD_DATA; 1588 } 1589 1590 if ((priv->proto_version == ALPS_PROTO_V7 && 1591 !alps_is_valid_package_v7(psmouse)) || 1592 (priv->proto_version == ALPS_PROTO_V8 && 1593 !alps_is_valid_package_ss4_v2(psmouse))) { 1594 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1595 psmouse->pktcnt - 1, 1596 psmouse->packet[psmouse->pktcnt - 1]); 1597 return PSMOUSE_BAD_DATA; 1598 } 1599 1600 if (psmouse->pktcnt == psmouse->pktsize) { 1601 priv->process_packet(psmouse); 1602 return PSMOUSE_FULL_PACKET; 1603 } 1604 1605 return PSMOUSE_GOOD_DATA; 1606} 1607 1608static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble) 1609{ 1610 struct ps2dev *ps2dev = &psmouse->ps2dev; 1611 struct alps_data *priv = psmouse->private; 1612 int command; 1613 unsigned char *param; 1614 unsigned char dummy[4]; 1615 1616 BUG_ON(nibble > 0xf); 1617 1618 command = priv->nibble_commands[nibble].command; 1619 param = (command & 0x0f00) ? 1620 dummy : (unsigned char *)&priv->nibble_commands[nibble].data; 1621 1622 if (ps2_command(ps2dev, param, command)) 1623 return -1; 1624 1625 return 0; 1626} 1627 1628static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr) 1629{ 1630 struct ps2dev *ps2dev = &psmouse->ps2dev; 1631 struct alps_data *priv = psmouse->private; 1632 int i, nibble; 1633 1634 if (ps2_command(ps2dev, NULL, priv->addr_command)) 1635 return -1; 1636 1637 for (i = 12; i >= 0; i -= 4) { 1638 nibble = (addr >> i) & 0xf; 1639 if (alps_command_mode_send_nibble(psmouse, nibble)) 1640 return -1; 1641 } 1642 1643 return 0; 1644} 1645 1646static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1647{ 1648 struct ps2dev *ps2dev = &psmouse->ps2dev; 1649 unsigned char param[4]; 1650 1651 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1652 return -1; 1653 1654 /* 1655 * The address being read is returned in the first two bytes 1656 * of the result. Check that this address matches the expected 1657 * address. 1658 */ 1659 if (addr != ((param[0] << 8) | param[1])) 1660 return -1; 1661 1662 return param[2]; 1663} 1664 1665static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1666{ 1667 if (alps_command_mode_set_addr(psmouse, addr)) 1668 return -1; 1669 return __alps_command_mode_read_reg(psmouse, addr); 1670} 1671 1672static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value) 1673{ 1674 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf)) 1675 return -1; 1676 if (alps_command_mode_send_nibble(psmouse, value & 0xf)) 1677 return -1; 1678 return 0; 1679} 1680 1681static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr, 1682 u8 value) 1683{ 1684 if (alps_command_mode_set_addr(psmouse, addr)) 1685 return -1; 1686 return __alps_command_mode_write_reg(psmouse, value); 1687} 1688 1689static int alps_rpt_cmd(struct psmouse *psmouse, int init_command, 1690 int repeated_command, unsigned char *param) 1691{ 1692 struct ps2dev *ps2dev = &psmouse->ps2dev; 1693 1694 param[0] = 0; 1695 if (init_command && ps2_command(ps2dev, param, init_command)) 1696 return -EIO; 1697 1698 if (ps2_command(ps2dev, NULL, repeated_command) || 1699 ps2_command(ps2dev, NULL, repeated_command) || 1700 ps2_command(ps2dev, NULL, repeated_command)) 1701 return -EIO; 1702 1703 param[0] = param[1] = param[2] = 0xff; 1704 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1705 return -EIO; 1706 1707 psmouse_dbg(psmouse, "%2.2X report: %3ph\n", 1708 repeated_command, param); 1709 return 0; 1710} 1711 1712static bool alps_check_valid_firmware_id(unsigned char id[]) 1713{ 1714 if (id[0] == 0x73) 1715 return true; 1716 1717 if (id[0] == 0x88 && 1718 (id[1] == 0x07 || 1719 id[1] == 0x08 || 1720 (id[1] & 0xf0) == 0xb0 || 1721 (id[1] & 0xf0) == 0xc0)) { 1722 return true; 1723 } 1724 1725 return false; 1726} 1727 1728static int alps_enter_command_mode(struct psmouse *psmouse) 1729{ 1730 unsigned char param[4]; 1731 1732 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) { 1733 psmouse_err(psmouse, "failed to enter command mode\n"); 1734 return -1; 1735 } 1736 1737 if (!alps_check_valid_firmware_id(param)) { 1738 psmouse_dbg(psmouse, 1739 "unknown response while entering command mode\n"); 1740 return -1; 1741 } 1742 return 0; 1743} 1744 1745static inline int alps_exit_command_mode(struct psmouse *psmouse) 1746{ 1747 struct ps2dev *ps2dev = &psmouse->ps2dev; 1748 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) 1749 return -1; 1750 return 0; 1751} 1752 1753/* 1754 * For DualPoint devices select the device that should respond to 1755 * subsequent commands. It looks like glidepad is behind stickpointer, 1756 * I'd thought it would be other way around... 1757 */ 1758static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable) 1759{ 1760 struct ps2dev *ps2dev = &psmouse->ps2dev; 1761 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11; 1762 1763 if (ps2_command(ps2dev, NULL, cmd) || 1764 ps2_command(ps2dev, NULL, cmd) || 1765 ps2_command(ps2dev, NULL, cmd) || 1766 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1767 return -1; 1768 1769 /* we may get 3 more bytes, just ignore them */ 1770 ps2_drain(ps2dev, 3, 100); 1771 1772 return 0; 1773} 1774 1775static int alps_absolute_mode_v1_v2(struct psmouse *psmouse) 1776{ 1777 struct ps2dev *ps2dev = &psmouse->ps2dev; 1778 1779 /* Try ALPS magic knock - 4 disable before enable */ 1780 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1781 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1782 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1783 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1784 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) 1785 return -1; 1786 1787 /* 1788 * Switch mouse to poll (remote) mode so motion data will not 1789 * get in our way 1790 */ 1791 return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL); 1792} 1793 1794static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word) 1795{ 1796 int i, nibble; 1797 1798 /* 1799 * b0-b11 are valid bits, send sequence is inverse. 1800 * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1 1801 */ 1802 for (i = 0; i <= 8; i += 4) { 1803 nibble = (word >> i) & 0xf; 1804 if (alps_command_mode_send_nibble(psmouse, nibble)) 1805 return -1; 1806 } 1807 1808 return 0; 1809} 1810 1811static int alps_monitor_mode_write_reg(struct psmouse *psmouse, 1812 u16 addr, u16 value) 1813{ 1814 struct ps2dev *ps2dev = &psmouse->ps2dev; 1815 1816 /* 0x0A0 is the command to write the word */ 1817 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) || 1818 alps_monitor_mode_send_word(psmouse, 0x0A0) || 1819 alps_monitor_mode_send_word(psmouse, addr) || 1820 alps_monitor_mode_send_word(psmouse, value) || 1821 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1822 return -1; 1823 1824 return 0; 1825} 1826 1827static int alps_monitor_mode(struct psmouse *psmouse, bool enable) 1828{ 1829 struct ps2dev *ps2dev = &psmouse->ps2dev; 1830 1831 if (enable) { 1832 /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */ 1833 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 1834 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) || 1835 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1836 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1837 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1838 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1839 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1840 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO)) 1841 return -1; 1842 } else { 1843 /* EC to exit monitor mode */ 1844 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP)) 1845 return -1; 1846 } 1847 1848 return 0; 1849} 1850 1851static int alps_absolute_mode_v6(struct psmouse *psmouse) 1852{ 1853 u16 reg_val = 0x181; 1854 int ret = -1; 1855 1856 /* enter monitor mode, to write the register */ 1857 if (alps_monitor_mode(psmouse, true)) 1858 return -1; 1859 1860 ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val); 1861 1862 if (alps_monitor_mode(psmouse, false)) 1863 ret = -1; 1864 1865 return ret; 1866} 1867 1868static int alps_get_status(struct psmouse *psmouse, char *param) 1869{ 1870 /* Get status: 0xF5 0xF5 0xF5 0xE9 */ 1871 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param)) 1872 return -1; 1873 1874 return 0; 1875} 1876 1877/* 1878 * Turn touchpad tapping on or off. The sequences are: 1879 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable, 1880 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable. 1881 * My guess that 0xE9 (GetInfo) is here as a sync point. 1882 * For models that also have stickpointer (DualPoints) its tapping 1883 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but 1884 * we don't fiddle with it. 1885 */ 1886static int alps_tap_mode(struct psmouse *psmouse, int enable) 1887{ 1888 struct ps2dev *ps2dev = &psmouse->ps2dev; 1889 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES; 1890 unsigned char tap_arg = enable ? 0x0A : 0x00; 1891 unsigned char param[4]; 1892 1893 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) || 1894 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1895 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1896 ps2_command(ps2dev, &tap_arg, cmd)) 1897 return -1; 1898 1899 if (alps_get_status(psmouse, param)) 1900 return -1; 1901 1902 return 0; 1903} 1904 1905/* 1906 * alps_poll() - poll the touchpad for current motion packet. 1907 * Used in resync. 1908 */ 1909static int alps_poll(struct psmouse *psmouse) 1910{ 1911 struct alps_data *priv = psmouse->private; 1912 unsigned char buf[sizeof(psmouse->packet)]; 1913 bool poll_failed; 1914 1915 if (priv->flags & ALPS_PASS) 1916 alps_passthrough_mode_v2(psmouse, true); 1917 1918 poll_failed = ps2_command(&psmouse->ps2dev, buf, 1919 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0; 1920 1921 if (priv->flags & ALPS_PASS) 1922 alps_passthrough_mode_v2(psmouse, false); 1923 1924 if (poll_failed || (buf[0] & priv->mask0) != priv->byte0) 1925 return -1; 1926 1927 if ((psmouse->badbyte & 0xc8) == 0x08) { 1928/* 1929 * Poll the track stick ... 1930 */ 1931 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8))) 1932 return -1; 1933 } 1934 1935 memcpy(psmouse->packet, buf, sizeof(buf)); 1936 return 0; 1937} 1938 1939static int alps_hw_init_v1_v2(struct psmouse *psmouse) 1940{ 1941 struct alps_data *priv = psmouse->private; 1942 1943 if ((priv->flags & ALPS_PASS) && 1944 alps_passthrough_mode_v2(psmouse, true)) { 1945 return -1; 1946 } 1947 1948 if (alps_tap_mode(psmouse, true)) { 1949 psmouse_warn(psmouse, "Failed to enable hardware tapping\n"); 1950 return -1; 1951 } 1952 1953 if (alps_absolute_mode_v1_v2(psmouse)) { 1954 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 1955 return -1; 1956 } 1957 1958 if ((priv->flags & ALPS_PASS) && 1959 alps_passthrough_mode_v2(psmouse, false)) { 1960 return -1; 1961 } 1962 1963 /* ALPS needs stream mode, otherwise it won't report any data */ 1964 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) { 1965 psmouse_err(psmouse, "Failed to enable stream mode\n"); 1966 return -1; 1967 } 1968 1969 return 0; 1970} 1971 1972static int alps_hw_init_v6(struct psmouse *psmouse) 1973{ 1974 unsigned char param[2] = {0xC8, 0x14}; 1975 1976 /* Enter passthrough mode to let trackpoint enter 6byte raw mode */ 1977 if (alps_passthrough_mode_v2(psmouse, true)) 1978 return -1; 1979 1980 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1981 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1982 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1983 ps2_command(&psmouse->ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 1984 ps2_command(&psmouse->ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 1985 return -1; 1986 1987 if (alps_passthrough_mode_v2(psmouse, false)) 1988 return -1; 1989 1990 if (alps_absolute_mode_v6(psmouse)) { 1991 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 1992 return -1; 1993 } 1994 1995 return 0; 1996} 1997 1998/* 1999 * Enable or disable passthrough mode to the trackstick. 2000 */ 2001static int alps_passthrough_mode_v3(struct psmouse *psmouse, 2002 int reg_base, bool enable) 2003{ 2004 int reg_val, ret = -1; 2005 2006 if (alps_enter_command_mode(psmouse)) 2007 return -1; 2008 2009 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008); 2010 if (reg_val == -1) 2011 goto error; 2012 2013 if (enable) 2014 reg_val |= 0x01; 2015 else 2016 reg_val &= ~0x01; 2017 2018 ret = __alps_command_mode_write_reg(psmouse, reg_val); 2019 2020error: 2021 if (alps_exit_command_mode(psmouse)) 2022 ret = -1; 2023 return ret; 2024} 2025 2026/* Must be in command mode when calling this function */ 2027static int alps_absolute_mode_v3(struct psmouse *psmouse) 2028{ 2029 int reg_val; 2030 2031 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 2032 if (reg_val == -1) 2033 return -1; 2034 2035 reg_val |= 0x06; 2036 if (__alps_command_mode_write_reg(psmouse, reg_val)) 2037 return -1; 2038 2039 return 0; 2040} 2041 2042static int alps_probe_trackstick_v3(struct psmouse *psmouse, int reg_base) 2043{ 2044 int ret = -EIO, reg_val; 2045 2046 if (alps_enter_command_mode(psmouse)) 2047 goto error; 2048 2049 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08); 2050 if (reg_val == -1) 2051 goto error; 2052 2053 /* bit 7: trackstick is present */ 2054 ret = reg_val & 0x80 ? 0 : -ENODEV; 2055 2056error: 2057 alps_exit_command_mode(psmouse); 2058 return ret; 2059} 2060 2061static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base) 2062{ 2063 struct ps2dev *ps2dev = &psmouse->ps2dev; 2064 int ret = 0; 2065 unsigned char param[4]; 2066 2067 if (alps_passthrough_mode_v3(psmouse, reg_base, true)) 2068 return -EIO; 2069 2070 /* 2071 * E7 report for the trackstick 2072 * 2073 * There have been reports of failures to seem to trace back 2074 * to the above trackstick check failing. When these occur 2075 * this E7 report fails, so when that happens we continue 2076 * with the assumption that there isn't a trackstick after 2077 * all. 2078 */ 2079 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) { 2080 psmouse_warn(psmouse, "Failed to initialize trackstick (E7 report failed)\n"); 2081 ret = -ENODEV; 2082 } else { 2083 psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param); 2084 2085 /* 2086 * Not sure what this does, but it is absolutely 2087 * essential. Without it, the touchpad does not 2088 * work at all and the trackstick just emits normal 2089 * PS/2 packets. 2090 */ 2091 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2092 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2093 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2094 alps_command_mode_send_nibble(psmouse, 0x9) || 2095 alps_command_mode_send_nibble(psmouse, 0x4)) { 2096 psmouse_err(psmouse, 2097 "Error sending magic E6 sequence\n"); 2098 ret = -EIO; 2099 goto error; 2100 } 2101 2102 /* 2103 * This ensures the trackstick packets are in the format 2104 * supported by this driver. If bit 1 isn't set the packet 2105 * format is different. 2106 */ 2107 if (alps_enter_command_mode(psmouse) || 2108 alps_command_mode_write_reg(psmouse, 2109 reg_base + 0x08, 0x82) || 2110 alps_exit_command_mode(psmouse)) 2111 ret = -EIO; 2112 } 2113 2114error: 2115 if (alps_passthrough_mode_v3(psmouse, reg_base, false)) 2116 ret = -EIO; 2117 2118 return ret; 2119} 2120 2121static int alps_hw_init_v3(struct psmouse *psmouse) 2122{ 2123 struct ps2dev *ps2dev = &psmouse->ps2dev; 2124 int reg_val; 2125 unsigned char param[4]; 2126 2127 reg_val = alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE); 2128 if (reg_val == -EIO) 2129 goto error; 2130 2131 if (reg_val == 0 && 2132 alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO) 2133 goto error; 2134 2135 if (alps_enter_command_mode(psmouse) || 2136 alps_absolute_mode_v3(psmouse)) { 2137 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 2138 goto error; 2139 } 2140 2141 reg_val = alps_command_mode_read_reg(psmouse, 0x0006); 2142 if (reg_val == -1) 2143 goto error; 2144 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 2145 goto error; 2146 2147 reg_val = alps_command_mode_read_reg(psmouse, 0x0007); 2148 if (reg_val == -1) 2149 goto error; 2150 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 2151 goto error; 2152 2153 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1) 2154 goto error; 2155 if (__alps_command_mode_write_reg(psmouse, 0x04)) 2156 goto error; 2157 2158 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1) 2159 goto error; 2160 if (__alps_command_mode_write_reg(psmouse, 0x03)) 2161 goto error; 2162 2163 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1) 2164 goto error; 2165 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03)) 2166 goto error; 2167 2168 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1) 2169 goto error; 2170 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04)) 2171 goto error; 2172 2173 alps_exit_command_mode(psmouse); 2174 2175 /* Set rate and enable data reporting */ 2176 param[0] = 0x64; 2177 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 2178 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 2179 psmouse_err(psmouse, "Failed to enable data reporting\n"); 2180 return -1; 2181 } 2182 2183 return 0; 2184 2185error: 2186 /* 2187 * Leaving the touchpad in command mode will essentially render 2188 * it unusable until the machine reboots, so exit it here just 2189 * to be safe 2190 */ 2191 alps_exit_command_mode(psmouse); 2192 return -1; 2193} 2194 2195static int alps_get_v3_v7_resolution(struct psmouse *psmouse, int reg_pitch) 2196{ 2197 int reg, x_pitch, y_pitch, x_electrode, y_electrode, x_phys, y_phys; 2198 struct alps_data *priv = psmouse->private; 2199 2200 reg = alps_command_mode_read_reg(psmouse, reg_pitch); 2201 if (reg < 0) 2202 return reg; 2203 2204 x_pitch = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ 2205 x_pitch = 50 + 2 * x_pitch; /* In 0.1 mm units */ 2206 2207 y_pitch = (char)reg >> 4; /* sign extend upper 4 bits */ 2208 y_pitch = 36 + 2 * y_pitch; /* In 0.1 mm units */ 2209 2210 reg = alps_command_mode_read_reg(psmouse, reg_pitch + 1); 2211 if (reg < 0) 2212 return reg; 2213 2214 x_electrode = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ 2215 x_electrode = 17 + x_electrode; 2216 2217 y_electrode = (char)reg >> 4; /* sign extend upper 4 bits */ 2218 y_electrode = 13 + y_electrode; 2219 2220 x_phys = x_pitch * (x_electrode - 1); /* In 0.1 mm units */ 2221 y_phys = y_pitch * (y_electrode - 1); /* In 0.1 mm units */ 2222 2223 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ 2224 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ 2225 2226 psmouse_dbg(psmouse, 2227 "pitch %dx%d num-electrodes %dx%d physical size %dx%d mm res %dx%d\n", 2228 x_pitch, y_pitch, x_electrode, y_electrode, 2229 x_phys / 10, y_phys / 10, priv->x_res, priv->y_res); 2230 2231 return 0; 2232} 2233 2234static int alps_hw_init_rushmore_v3(struct psmouse *psmouse) 2235{ 2236 struct alps_data *priv = psmouse->private; 2237 struct ps2dev *ps2dev = &psmouse->ps2dev; 2238 int reg_val, ret = -1; 2239 2240 if (priv->flags & ALPS_DUALPOINT) { 2241 reg_val = alps_setup_trackstick_v3(psmouse, 2242 ALPS_REG_BASE_RUSHMORE); 2243 if (reg_val == -EIO) 2244 goto error; 2245 } 2246 2247 if (alps_enter_command_mode(psmouse) || 2248 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 || 2249 alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00)) 2250 goto error; 2251 2252 if (alps_get_v3_v7_resolution(psmouse, 0xc2da)) 2253 goto error; 2254 2255 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6); 2256 if (reg_val == -1) 2257 goto error; 2258 if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd)) 2259 goto error; 2260 2261 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 2262 goto error; 2263 2264 /* enter absolute mode */ 2265 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 2266 if (reg_val == -1) 2267 goto error; 2268 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 2269 goto error; 2270 2271 alps_exit_command_mode(psmouse); 2272 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2273 2274error: 2275 alps_exit_command_mode(psmouse); 2276 return ret; 2277} 2278 2279/* Must be in command mode when calling this function */ 2280static int alps_absolute_mode_v4(struct psmouse *psmouse) 2281{ 2282 int reg_val; 2283 2284 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 2285 if (reg_val == -1) 2286 return -1; 2287 2288 reg_val |= 0x02; 2289 if (__alps_command_mode_write_reg(psmouse, reg_val)) 2290 return -1; 2291 2292 return 0; 2293} 2294 2295static int alps_hw_init_v4(struct psmouse *psmouse) 2296{ 2297 struct ps2dev *ps2dev = &psmouse->ps2dev; 2298 unsigned char param[4]; 2299 2300 if (alps_enter_command_mode(psmouse)) 2301 goto error; 2302 2303 if (alps_absolute_mode_v4(psmouse)) { 2304 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 2305 goto error; 2306 } 2307 2308 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c)) 2309 goto error; 2310 2311 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03)) 2312 goto error; 2313 2314 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03)) 2315 goto error; 2316 2317 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15)) 2318 goto error; 2319 2320 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01)) 2321 goto error; 2322 2323 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03)) 2324 goto error; 2325 2326 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03)) 2327 goto error; 2328 2329 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03)) 2330 goto error; 2331 2332 alps_exit_command_mode(psmouse); 2333 2334 /* 2335 * This sequence changes the output from a 9-byte to an 2336 * 8-byte format. All the same data seems to be present, 2337 * just in a more compact format. 2338 */ 2339 param[0] = 0xc8; 2340 param[1] = 0x64; 2341 param[2] = 0x50; 2342 if (ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2343 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE) || 2344 ps2_command(ps2dev, ¶m[2], PSMOUSE_CMD_SETRATE) || 2345 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) 2346 return -1; 2347 2348 /* Set rate and enable data reporting */ 2349 param[0] = 0x64; 2350 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 2351 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 2352 psmouse_err(psmouse, "Failed to enable data reporting\n"); 2353 return -1; 2354 } 2355 2356 return 0; 2357 2358error: 2359 /* 2360 * Leaving the touchpad in command mode will essentially render 2361 * it unusable until the machine reboots, so exit it here just 2362 * to be safe 2363 */ 2364 alps_exit_command_mode(psmouse); 2365 return -1; 2366} 2367 2368static int alps_get_otp_values_ss4_v2(struct psmouse *psmouse, 2369 unsigned char index, unsigned char otp[]) 2370{ 2371 struct ps2dev *ps2dev = &psmouse->ps2dev; 2372 2373 switch (index) { 2374 case 0: 2375 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2376 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2377 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) 2378 return -1; 2379 2380 break; 2381 2382 case 1: 2383 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2384 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2385 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) 2386 return -1; 2387 2388 break; 2389 } 2390 2391 return 0; 2392} 2393 2394static int alps_update_device_area_ss4_v2(unsigned char otp[][4], 2395 struct alps_data *priv) 2396{ 2397 int num_x_electrode; 2398 int num_y_electrode; 2399 int x_pitch, y_pitch, x_phys, y_phys; 2400 2401 num_x_electrode = SS4_NUMSENSOR_XOFFSET + (otp[1][0] & 0x0F); 2402 num_y_electrode = SS4_NUMSENSOR_YOFFSET + ((otp[1][0] >> 4) & 0x0F); 2403 2404 priv->x_max = (num_x_electrode - 1) * SS4_COUNT_PER_ELECTRODE; 2405 priv->y_max = (num_y_electrode - 1) * SS4_COUNT_PER_ELECTRODE; 2406 2407 x_pitch = ((otp[1][2] >> 2) & 0x07) + SS4_MIN_PITCH_MM; 2408 y_pitch = ((otp[1][2] >> 5) & 0x07) + SS4_MIN_PITCH_MM; 2409 2410 x_phys = x_pitch * (num_x_electrode - 1); /* In 0.1 mm units */ 2411 y_phys = y_pitch * (num_y_electrode - 1); /* In 0.1 mm units */ 2412 2413 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ 2414 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ 2415 2416 return 0; 2417} 2418 2419static int alps_update_btn_info_ss4_v2(unsigned char otp[][4], 2420 struct alps_data *priv) 2421{ 2422 unsigned char is_btnless; 2423 2424 is_btnless = (otp[1][1] >> 3) & 0x01; 2425 2426 if (is_btnless) 2427 priv->flags |= ALPS_BUTTONPAD; 2428 2429 return 0; 2430} 2431 2432static int alps_set_defaults_ss4_v2(struct psmouse *psmouse, 2433 struct alps_data *priv) 2434{ 2435 unsigned char otp[2][4]; 2436 2437 memset(otp, 0, sizeof(otp)); 2438 2439 if (alps_get_otp_values_ss4_v2(psmouse, 0, &otp[0][0]) || 2440 alps_get_otp_values_ss4_v2(psmouse, 1, &otp[1][0])) 2441 return -1; 2442 2443 alps_update_device_area_ss4_v2(otp, priv); 2444 2445 alps_update_btn_info_ss4_v2(otp, priv); 2446 2447 return 0; 2448} 2449 2450static int alps_dolphin_get_device_area(struct psmouse *psmouse, 2451 struct alps_data *priv) 2452{ 2453 struct ps2dev *ps2dev = &psmouse->ps2dev; 2454 unsigned char param[4] = {0}; 2455 int num_x_electrode, num_y_electrode; 2456 2457 if (alps_enter_command_mode(psmouse)) 2458 return -1; 2459 2460 param[0] = 0x0a; 2461 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 2462 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2463 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2464 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2465 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE)) 2466 return -1; 2467 2468 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 2469 return -1; 2470 2471 /* 2472 * Dolphin's sensor line number is not fixed. It can be calculated 2473 * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET. 2474 * Further more, we can get device's x_max and y_max by multiplying 2475 * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE. 2476 * 2477 * e.g. When we get register's sensor_x = 11 & sensor_y = 8, 2478 * real sensor line number X = 11 + 8 = 19, and 2479 * real sensor line number Y = 8 + 1 = 9. 2480 * So, x_max = (19 - 1) * 64 = 1152, and 2481 * y_max = (9 - 1) * 64 = 512. 2482 */ 2483 num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F); 2484 num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F); 2485 priv->x_bits = num_x_electrode; 2486 priv->y_bits = num_y_electrode; 2487 priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2488 priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2489 2490 if (alps_exit_command_mode(psmouse)) 2491 return -1; 2492 2493 return 0; 2494} 2495 2496static int alps_hw_init_dolphin_v1(struct psmouse *psmouse) 2497{ 2498 struct ps2dev *ps2dev = &psmouse->ps2dev; 2499 unsigned char param[2]; 2500 2501 /* This is dolphin "v1" as empirically defined by florin9doi */ 2502 param[0] = 0x64; 2503 param[1] = 0x28; 2504 2505 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2506 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2507 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 2508 return -1; 2509 2510 return 0; 2511} 2512 2513static int alps_hw_init_v7(struct psmouse *psmouse) 2514{ 2515 struct ps2dev *ps2dev = &psmouse->ps2dev; 2516 int reg_val, ret = -1; 2517 2518 if (alps_enter_command_mode(psmouse) || 2519 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1) 2520 goto error; 2521 2522 if (alps_get_v3_v7_resolution(psmouse, 0xc397)) 2523 goto error; 2524 2525 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 2526 goto error; 2527 2528 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 2529 if (reg_val == -1) 2530 goto error; 2531 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 2532 goto error; 2533 2534 alps_exit_command_mode(psmouse); 2535 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2536 2537error: 2538 alps_exit_command_mode(psmouse); 2539 return ret; 2540} 2541 2542static int alps_hw_init_ss4_v2(struct psmouse *psmouse) 2543{ 2544 struct ps2dev *ps2dev = &psmouse->ps2dev; 2545 char param[2] = {0x64, 0x28}; 2546 int ret = -1; 2547 2548 /* enter absolute mode */ 2549 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2550 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2551 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2552 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) { 2553 goto error; 2554 } 2555 2556 /* T.B.D. Decread noise packet number, delete in the future */ 2557 if (alps_exit_command_mode(psmouse) || 2558 alps_enter_command_mode(psmouse) || 2559 alps_command_mode_write_reg(psmouse, 0x001D, 0x20)) { 2560 goto error; 2561 } 2562 alps_exit_command_mode(psmouse); 2563 2564 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2565 2566error: 2567 alps_exit_command_mode(psmouse); 2568 return ret; 2569} 2570 2571static int alps_set_protocol(struct psmouse *psmouse, 2572 struct alps_data *priv, 2573 const struct alps_protocol_info *protocol) 2574{ 2575 psmouse->private = priv; 2576 2577 setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse); 2578 2579 priv->proto_version = protocol->version; 2580 priv->byte0 = protocol->byte0; 2581 priv->mask0 = protocol->mask0; 2582 priv->flags = protocol->flags; 2583 2584 priv->x_max = 2000; 2585 priv->y_max = 1400; 2586 priv->x_bits = 15; 2587 priv->y_bits = 11; 2588 2589 switch (priv->proto_version) { 2590 case ALPS_PROTO_V1: 2591 case ALPS_PROTO_V2: 2592 priv->hw_init = alps_hw_init_v1_v2; 2593 priv->process_packet = alps_process_packet_v1_v2; 2594 priv->set_abs_params = alps_set_abs_params_st; 2595 priv->x_max = 1023; 2596 priv->y_max = 767; 2597 if (dmi_check_system(alps_dmi_has_separate_stick_buttons)) 2598 priv->flags |= ALPS_STICK_BITS; 2599 break; 2600 2601 case ALPS_PROTO_V3: 2602 priv->hw_init = alps_hw_init_v3; 2603 priv->process_packet = alps_process_packet_v3; 2604 priv->set_abs_params = alps_set_abs_params_mt; 2605 priv->decode_fields = alps_decode_pinnacle; 2606 priv->nibble_commands = alps_v3_nibble_commands; 2607 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2608 break; 2609 2610 case ALPS_PROTO_V3_RUSHMORE: 2611 priv->hw_init = alps_hw_init_rushmore_v3; 2612 priv->process_packet = alps_process_packet_v3; 2613 priv->set_abs_params = alps_set_abs_params_mt; 2614 priv->decode_fields = alps_decode_rushmore; 2615 priv->nibble_commands = alps_v3_nibble_commands; 2616 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2617 priv->x_bits = 16; 2618 priv->y_bits = 12; 2619 2620 if (alps_probe_trackstick_v3(psmouse, 2621 ALPS_REG_BASE_RUSHMORE) < 0) 2622 priv->flags &= ~ALPS_DUALPOINT; 2623 2624 break; 2625 2626 case ALPS_PROTO_V4: 2627 priv->hw_init = alps_hw_init_v4; 2628 priv->process_packet = alps_process_packet_v4; 2629 priv->set_abs_params = alps_set_abs_params_mt; 2630 priv->nibble_commands = alps_v4_nibble_commands; 2631 priv->addr_command = PSMOUSE_CMD_DISABLE; 2632 break; 2633 2634 case ALPS_PROTO_V5: 2635 priv->hw_init = alps_hw_init_dolphin_v1; 2636 priv->process_packet = alps_process_touchpad_packet_v3_v5; 2637 priv->decode_fields = alps_decode_dolphin; 2638 priv->set_abs_params = alps_set_abs_params_mt; 2639 priv->nibble_commands = alps_v3_nibble_commands; 2640 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2641 priv->x_bits = 23; 2642 priv->y_bits = 12; 2643 2644 if (alps_dolphin_get_device_area(psmouse, priv)) 2645 return -EIO; 2646 2647 break; 2648 2649 case ALPS_PROTO_V6: 2650 priv->hw_init = alps_hw_init_v6; 2651 priv->process_packet = alps_process_packet_v6; 2652 priv->set_abs_params = alps_set_abs_params_st; 2653 priv->nibble_commands = alps_v6_nibble_commands; 2654 priv->x_max = 2047; 2655 priv->y_max = 1535; 2656 break; 2657 2658 case ALPS_PROTO_V7: 2659 priv->hw_init = alps_hw_init_v7; 2660 priv->process_packet = alps_process_packet_v7; 2661 priv->decode_fields = alps_decode_packet_v7; 2662 priv->set_abs_params = alps_set_abs_params_v7; 2663 priv->nibble_commands = alps_v3_nibble_commands; 2664 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2665 priv->x_max = 0xfff; 2666 priv->y_max = 0x7ff; 2667 2668 if (priv->fw_ver[1] != 0xba) 2669 priv->flags |= ALPS_BUTTONPAD; 2670 2671 break; 2672 2673 case ALPS_PROTO_V8: 2674 priv->hw_init = alps_hw_init_ss4_v2; 2675 priv->process_packet = alps_process_packet_ss4_v2; 2676 priv->decode_fields = alps_decode_ss4_v2; 2677 priv->set_abs_params = alps_set_abs_params_ss4_v2; 2678 priv->nibble_commands = alps_v3_nibble_commands; 2679 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2680 2681 if (alps_set_defaults_ss4_v2(psmouse, priv)) 2682 return -EIO; 2683 2684 break; 2685 } 2686 2687 return 0; 2688} 2689 2690static const struct alps_protocol_info *alps_match_table(unsigned char *e7, 2691 unsigned char *ec) 2692{ 2693 const struct alps_model_info *model; 2694 int i; 2695 2696 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) { 2697 model = &alps_model_data[i]; 2698 2699 if (!memcmp(e7, model->signature, sizeof(model->signature)) && 2700 (!model->command_mode_resp || 2701 model->command_mode_resp == ec[2])) { 2702 2703 return &model->protocol_info; 2704 } 2705 } 2706 2707 return NULL; 2708} 2709 2710static int alps_identify(struct psmouse *psmouse, struct alps_data *priv) 2711{ 2712 const struct alps_protocol_info *protocol; 2713 unsigned char e6[4], e7[4], ec[4]; 2714 int error; 2715 2716 /* 2717 * First try "E6 report". 2718 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed. 2719 * The bits 0-2 of the first byte will be 1s if some buttons are 2720 * pressed. 2721 */ 2722 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2723 PSMOUSE_CMD_SETSCALE11, e6)) 2724 return -EIO; 2725 2726 if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100)) 2727 return -EINVAL; 2728 2729 /* 2730 * Now get the "E7" and "EC" reports. These will uniquely identify 2731 * most ALPS touchpads. 2732 */ 2733 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2734 PSMOUSE_CMD_SETSCALE21, e7) || 2735 alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2736 PSMOUSE_CMD_RESET_WRAP, ec) || 2737 alps_exit_command_mode(psmouse)) 2738 return -EIO; 2739 2740 protocol = alps_match_table(e7, ec); 2741 if (!protocol) { 2742 if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 && 2743 ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) { 2744 protocol = &alps_v5_protocol_data; 2745 } else if (ec[0] == 0x88 && 2746 ((ec[1] & 0xf0) == 0xb0 || (ec[1] & 0xf0) == 0xc0)) { 2747 protocol = &alps_v7_protocol_data; 2748 } else if (ec[0] == 0x88 && ec[1] == 0x08) { 2749 protocol = &alps_v3_rushmore_data; 2750 } else if (ec[0] == 0x88 && ec[1] == 0x07 && 2751 ec[2] >= 0x90 && ec[2] <= 0x9d) { 2752 protocol = &alps_v3_protocol_data; 2753 } else if (e7[0] == 0x73 && e7[1] == 0x03 && 2754 e7[2] == 0x14 && ec[1] == 0x02) { 2755 protocol = &alps_v8_protocol_data; 2756 } else { 2757 psmouse_dbg(psmouse, 2758 "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec); 2759 return -EINVAL; 2760 } 2761 } 2762 2763 if (priv) { 2764 /* Save the Firmware version */ 2765 memcpy(priv->fw_ver, ec, 3); 2766 error = alps_set_protocol(psmouse, priv, protocol); 2767 if (error) 2768 return error; 2769 } 2770 2771 return 0; 2772} 2773 2774static int alps_reconnect(struct psmouse *psmouse) 2775{ 2776 struct alps_data *priv = psmouse->private; 2777 2778 psmouse_reset(psmouse); 2779 2780 if (alps_identify(psmouse, priv) < 0) 2781 return -1; 2782 2783 return priv->hw_init(psmouse); 2784} 2785 2786static void alps_disconnect(struct psmouse *psmouse) 2787{ 2788 struct alps_data *priv = psmouse->private; 2789 2790 psmouse_reset(psmouse); 2791 del_timer_sync(&priv->timer); 2792 if (priv->dev2) 2793 input_unregister_device(priv->dev2); 2794 if (!IS_ERR_OR_NULL(priv->dev3)) 2795 input_unregister_device(priv->dev3); 2796 kfree(priv); 2797} 2798 2799static void alps_set_abs_params_st(struct alps_data *priv, 2800 struct input_dev *dev1) 2801{ 2802 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0); 2803 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0); 2804 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2805} 2806 2807static void alps_set_abs_params_mt_common(struct alps_data *priv, 2808 struct input_dev *dev1) 2809{ 2810 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0); 2811 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0); 2812 2813 input_abs_set_res(dev1, ABS_MT_POSITION_X, priv->x_res); 2814 input_abs_set_res(dev1, ABS_MT_POSITION_Y, priv->y_res); 2815 2816 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit); 2817 set_bit(BTN_TOOL_QUADTAP, dev1->keybit); 2818} 2819 2820static void alps_set_abs_params_mt(struct alps_data *priv, 2821 struct input_dev *dev1) 2822{ 2823 alps_set_abs_params_mt_common(priv, dev1); 2824 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2825 2826 input_mt_init_slots(dev1, MAX_TOUCHES, 2827 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 2828 INPUT_MT_TRACK | INPUT_MT_SEMI_MT); 2829} 2830 2831static void alps_set_abs_params_v7(struct alps_data *priv, 2832 struct input_dev *dev1) 2833{ 2834 alps_set_abs_params_mt_common(priv, dev1); 2835 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2836 2837 input_mt_init_slots(dev1, MAX_TOUCHES, 2838 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 2839 INPUT_MT_TRACK); 2840 2841 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2842} 2843 2844static void alps_set_abs_params_ss4_v2(struct alps_data *priv, 2845 struct input_dev *dev1) 2846{ 2847 alps_set_abs_params_mt_common(priv, dev1); 2848 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2849 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2850 2851 input_mt_init_slots(dev1, MAX_TOUCHES, 2852 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 2853 INPUT_MT_TRACK); 2854} 2855 2856int alps_init(struct psmouse *psmouse) 2857{ 2858 struct alps_data *priv = psmouse->private; 2859 struct input_dev *dev1 = psmouse->dev; 2860 int error; 2861 2862 error = priv->hw_init(psmouse); 2863 if (error) 2864 goto init_fail; 2865 2866 /* 2867 * Undo part of setup done for us by psmouse core since touchpad 2868 * is not a relative device. 2869 */ 2870 __clear_bit(EV_REL, dev1->evbit); 2871 __clear_bit(REL_X, dev1->relbit); 2872 __clear_bit(REL_Y, dev1->relbit); 2873 2874 /* 2875 * Now set up our capabilities. 2876 */ 2877 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY); 2878 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH); 2879 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER); 2880 dev1->keybit[BIT_WORD(BTN_LEFT)] |= 2881 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); 2882 2883 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS); 2884 2885 priv->set_abs_params(priv, dev1); 2886 2887 if (priv->flags & ALPS_WHEEL) { 2888 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL); 2889 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL); 2890 } 2891 2892 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 2893 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD); 2894 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK); 2895 } 2896 2897 if (priv->flags & ALPS_FOUR_BUTTONS) { 2898 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0); 2899 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1); 2900 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2); 2901 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3); 2902 } else if (priv->flags & ALPS_BUTTONPAD) { 2903 set_bit(INPUT_PROP_BUTTONPAD, dev1->propbit); 2904 clear_bit(BTN_RIGHT, dev1->keybit); 2905 } else { 2906 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE); 2907 } 2908 2909 if (priv->flags & ALPS_DUALPOINT) { 2910 struct input_dev *dev2; 2911 2912 dev2 = input_allocate_device(); 2913 if (!dev2) { 2914 psmouse_err(psmouse, 2915 "failed to allocate trackstick device\n"); 2916 error = -ENOMEM; 2917 goto init_fail; 2918 } 2919 2920 snprintf(priv->phys2, sizeof(priv->phys2), "%s/input1", 2921 psmouse->ps2dev.serio->phys); 2922 dev2->phys = priv->phys2; 2923 2924 /* 2925 * format of input device name is: "protocol vendor name" 2926 * see function psmouse_switch_protocol() in psmouse-base.c 2927 */ 2928 dev2->name = "AlpsPS/2 ALPS DualPoint Stick"; 2929 2930 dev2->id.bustype = BUS_I8042; 2931 dev2->id.vendor = 0x0002; 2932 dev2->id.product = PSMOUSE_ALPS; 2933 dev2->id.version = priv->proto_version; 2934 dev2->dev.parent = &psmouse->ps2dev.serio->dev; 2935 2936 input_set_capability(dev2, EV_REL, REL_X); 2937 input_set_capability(dev2, EV_REL, REL_Y); 2938 input_set_capability(dev2, EV_KEY, BTN_LEFT); 2939 input_set_capability(dev2, EV_KEY, BTN_RIGHT); 2940 input_set_capability(dev2, EV_KEY, BTN_MIDDLE); 2941 2942 __set_bit(INPUT_PROP_POINTER, dev2->propbit); 2943 __set_bit(INPUT_PROP_POINTING_STICK, dev2->propbit); 2944 2945 error = input_register_device(dev2); 2946 if (error) { 2947 psmouse_err(psmouse, 2948 "failed to register trackstick device: %d\n", 2949 error); 2950 input_free_device(dev2); 2951 goto init_fail; 2952 } 2953 2954 priv->dev2 = dev2; 2955 } 2956 2957 priv->psmouse = psmouse; 2958 2959 INIT_DELAYED_WORK(&priv->dev3_register_work, 2960 alps_register_bare_ps2_mouse); 2961 2962 psmouse->protocol_handler = alps_process_byte; 2963 psmouse->poll = alps_poll; 2964 psmouse->disconnect = alps_disconnect; 2965 psmouse->reconnect = alps_reconnect; 2966 psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6; 2967 2968 /* We are having trouble resyncing ALPS touchpads so disable it for now */ 2969 psmouse->resync_time = 0; 2970 2971 /* Allow 2 invalid packets without resetting device */ 2972 psmouse->resetafter = psmouse->pktsize * 2; 2973 2974 return 0; 2975 2976init_fail: 2977 psmouse_reset(psmouse); 2978 /* 2979 * Even though we did not allocate psmouse->private we do free 2980 * it here. 2981 */ 2982 kfree(psmouse->private); 2983 psmouse->private = NULL; 2984 return error; 2985} 2986 2987int alps_detect(struct psmouse *psmouse, bool set_properties) 2988{ 2989 struct alps_data *priv; 2990 int error; 2991 2992 error = alps_identify(psmouse, NULL); 2993 if (error) 2994 return error; 2995 2996 /* 2997 * Reset the device to make sure it is fully operational: 2998 * on some laptops, like certain Dell Latitudes, we may 2999 * fail to properly detect presence of trackstick if device 3000 * has not been reset. 3001 */ 3002 psmouse_reset(psmouse); 3003 3004 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL); 3005 if (!priv) 3006 return -ENOMEM; 3007 3008 error = alps_identify(psmouse, priv); 3009 if (error) { 3010 kfree(priv); 3011 return error; 3012 } 3013 3014 if (set_properties) { 3015 psmouse->vendor = "ALPS"; 3016 psmouse->name = priv->flags & ALPS_DUALPOINT ? 3017 "DualPoint TouchPad" : "GlidePoint"; 3018 psmouse->model = priv->proto_version; 3019 } else { 3020 /* 3021 * Destroy alps_data structure we allocated earlier since 3022 * this was just a "trial run". Otherwise we'll keep it 3023 * to be used by alps_init() which has to be called if 3024 * we succeed and set_properties is true. 3025 */ 3026 kfree(priv); 3027 psmouse->private = NULL; 3028 } 3029 3030 return 0; 3031} 3032 3033