1 /* 2 * ALPS touchpad PS/2 mouse driver 3 * 4 * Copyright (c) 2003 Neil Brown <neilb@cse.unsw.edu.au> 5 * Copyright (c) 2003-2005 Peter Osterlund <petero2@telia.com> 6 * Copyright (c) 2004 Dmitry Torokhov <dtor@mail.ru> 7 * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz> 8 * Copyright (c) 2009 Sebastian Kapfer <sebastian_kapfer@gmx.net> 9 * 10 * ALPS detection, tap switching and status querying info is taken from 11 * tpconfig utility (by C. Scott Ananian and Bruce Kall). 12 * 13 * This program is free software; you can redistribute it and/or modify it 14 * under the terms of the GNU General Public License version 2 as published by 15 * the Free Software Foundation. 16 */ 17 18 #include <linux/slab.h> 19 #include <linux/input.h> 20 #include <linux/input/mt.h> 21 #include <linux/serio.h> 22 #include <linux/libps2.h> 23 24 #include "psmouse.h" 25 #include "alps.h" 26 27 /* 28 * Definitions for ALPS version 3 and 4 command mode protocol 29 */ 30 #define ALPS_CMD_NIBBLE_10 0x01f2 31 32 #define ALPS_REG_BASE_RUSHMORE 0xc2c0 33 #define ALPS_REG_BASE_PINNACLE 0x0000 34 35 static const struct alps_nibble_commands alps_v3_nibble_commands[] = { 36 { PSMOUSE_CMD_SETPOLL, 0x00 }, /* 0 */ 37 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */ 38 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */ 39 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */ 40 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */ 41 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */ 42 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */ 43 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */ 44 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */ 45 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */ 46 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */ 47 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */ 48 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */ 49 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */ 50 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */ 51 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 52 }; 53 54 static const struct alps_nibble_commands alps_v4_nibble_commands[] = { 55 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */ 56 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */ 57 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */ 58 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */ 59 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */ 60 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */ 61 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */ 62 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */ 63 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */ 64 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */ 65 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */ 66 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */ 67 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */ 68 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */ 69 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */ 70 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 71 }; 72 73 static const struct alps_nibble_commands alps_v6_nibble_commands[] = { 74 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */ 75 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 1 */ 76 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 2 */ 77 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 3 */ 78 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 4 */ 79 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 5 */ 80 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 6 */ 81 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 7 */ 82 { PSMOUSE_CMD_GETID, 0x00 }, /* 8 */ 83 { PSMOUSE_CMD_GETINFO, 0x00 }, /* 9 */ 84 { PSMOUSE_CMD_SETRES, 0x00 }, /* a */ 85 { PSMOUSE_CMD_SETRES, 0x01 }, /* b */ 86 { PSMOUSE_CMD_SETRES, 0x02 }, /* c */ 87 { PSMOUSE_CMD_SETRES, 0x03 }, /* d */ 88 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* e */ 89 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 90 }; 91 92 93 #define ALPS_DUALPOINT 0x02 /* touchpad has trackstick */ 94 #define ALPS_PASS 0x04 /* device has a pass-through port */ 95 96 #define ALPS_WHEEL 0x08 /* hardware wheel present */ 97 #define ALPS_FW_BK_1 0x10 /* front & back buttons present */ 98 #define ALPS_FW_BK_2 0x20 /* front & back buttons present */ 99 #define ALPS_FOUR_BUTTONS 0x40 /* 4 direction button present */ 100 #define ALPS_PS2_INTERLEAVED 0x80 /* 3-byte PS/2 packet interleaved with 101 6-byte ALPS packet */ 102 #define ALPS_BUTTONPAD 0x200 /* device is a clickpad */ 103 104 static const struct alps_model_info alps_model_data[] = { 105 { { 0x32, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Toshiba Salellite Pro M10 */ 106 { { 0x33, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V1, 0x88, 0xf8, 0 } }, /* UMAX-530T */ 107 { { 0x53, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 108 { { 0x53, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 109 { { 0x60, 0x03, 0xc8 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, /* HP ze1115 */ 110 { { 0x63, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 111 { { 0x63, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 112 { { 0x63, 0x02, 0x28 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Fujitsu Siemens S6010 */ 113 { { 0x63, 0x02, 0x3c }, 0x00, { ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL } }, /* Toshiba Satellite S2400-103 */ 114 { { 0x63, 0x02, 0x50 }, 0x00, { ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 } }, /* NEC Versa L320 */ 115 { { 0x63, 0x02, 0x64 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 116 { { 0x63, 0x03, 0xc8 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D800 */ 117 { { 0x73, 0x00, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT } }, /* ThinkPad R61 8918-5QG */ 118 { { 0x73, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 119 { { 0x73, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Ahtec Laptop */ 120 121 /* 122 * XXX This entry is suspicious. First byte has zero lower nibble, 123 * which is what a normal mouse would report. Also, the value 0x0e 124 * isn't valid per PS/2 spec. 125 */ 126 { { 0x20, 0x02, 0x0e }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, 127 128 { { 0x22, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, 129 { { 0x22, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D600 */ 130 /* Dell Latitude E5500, E6400, E6500, Precision M4400 */ 131 { { 0x62, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xcf, 0xcf, 132 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, 133 { { 0x73, 0x00, 0x14 }, 0x00, { ALPS_PROTO_V6, 0xff, 0xff, ALPS_DUALPOINT } }, /* Dell XT2 */ 134 { { 0x73, 0x02, 0x50 }, 0x00, { ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS } }, /* Dell Vostro 1400 */ 135 { { 0x52, 0x01, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff, 136 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, /* Toshiba Tecra A11-11L */ 137 { { 0x73, 0x02, 0x64 }, 0x8a, { ALPS_PROTO_V4, 0x8f, 0x8f, 0 } }, 138 }; 139 140 static const struct alps_protocol_info alps_v3_protocol_data = { 141 ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT 142 }; 143 144 static const struct alps_protocol_info alps_v3_rushmore_data = { 145 ALPS_PROTO_V3_RUSHMORE, 0x8f, 0x8f, ALPS_DUALPOINT 146 }; 147 148 static const struct alps_protocol_info alps_v5_protocol_data = { 149 ALPS_PROTO_V5, 0xc8, 0xd8, 0 150 }; 151 152 static const struct alps_protocol_info alps_v7_protocol_data = { 153 ALPS_PROTO_V7, 0x48, 0x48, ALPS_DUALPOINT 154 }; 155 156 static const struct alps_protocol_info alps_v8_protocol_data = { 157 ALPS_PROTO_V8, 0x18, 0x18, 0 158 }; 159 160 static void alps_set_abs_params_st(struct alps_data *priv, 161 struct input_dev *dev1); 162 static void alps_set_abs_params_semi_mt(struct alps_data *priv, 163 struct input_dev *dev1); 164 static void alps_set_abs_params_v7(struct alps_data *priv, 165 struct input_dev *dev1); 166 static void alps_set_abs_params_ss4_v2(struct alps_data *priv, 167 struct input_dev *dev1); 168 169 /* Packet formats are described in Documentation/input/alps.txt */ 170 171 static bool alps_is_valid_first_byte(struct alps_data *priv, 172 unsigned char data) 173 { 174 return (data & priv->mask0) == priv->byte0; 175 } 176 177 static void alps_report_buttons(struct input_dev *dev1, struct input_dev *dev2, 178 int left, int right, int middle) 179 { 180 struct input_dev *dev; 181 182 /* 183 * If shared button has already been reported on the 184 * other device (dev2) then this event should be also 185 * sent through that device. 186 */ 187 dev = (dev2 && test_bit(BTN_LEFT, dev2->key)) ? dev2 : dev1; 188 input_report_key(dev, BTN_LEFT, left); 189 190 dev = (dev2 && test_bit(BTN_RIGHT, dev2->key)) ? dev2 : dev1; 191 input_report_key(dev, BTN_RIGHT, right); 192 193 dev = (dev2 && test_bit(BTN_MIDDLE, dev2->key)) ? dev2 : dev1; 194 input_report_key(dev, BTN_MIDDLE, middle); 195 196 /* 197 * Sync the _other_ device now, we'll do the first 198 * device later once we report the rest of the events. 199 */ 200 if (dev2) 201 input_sync(dev2); 202 } 203 204 static void alps_process_packet_v1_v2(struct psmouse *psmouse) 205 { 206 struct alps_data *priv = psmouse->private; 207 unsigned char *packet = psmouse->packet; 208 struct input_dev *dev = psmouse->dev; 209 struct input_dev *dev2 = priv->dev2; 210 int x, y, z, ges, fin, left, right, middle; 211 int back = 0, forward = 0; 212 213 if (priv->proto_version == ALPS_PROTO_V1) { 214 left = packet[2] & 0x10; 215 right = packet[2] & 0x08; 216 middle = 0; 217 x = packet[1] | ((packet[0] & 0x07) << 7); 218 y = packet[4] | ((packet[3] & 0x07) << 7); 219 z = packet[5]; 220 } else { 221 left = packet[3] & 1; 222 right = packet[3] & 2; 223 middle = packet[3] & 4; 224 x = packet[1] | ((packet[2] & 0x78) << (7 - 3)); 225 y = packet[4] | ((packet[3] & 0x70) << (7 - 4)); 226 z = packet[5]; 227 } 228 229 if (priv->flags & ALPS_FW_BK_1) { 230 back = packet[0] & 0x10; 231 forward = packet[2] & 4; 232 } 233 234 if (priv->flags & ALPS_FW_BK_2) { 235 back = packet[3] & 4; 236 forward = packet[2] & 4; 237 if ((middle = forward && back)) 238 forward = back = 0; 239 } 240 241 ges = packet[2] & 1; 242 fin = packet[2] & 2; 243 244 if ((priv->flags & ALPS_DUALPOINT) && z == 127) { 245 input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x)); 246 input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y)); 247 248 alps_report_buttons(dev2, dev, left, right, middle); 249 250 input_sync(dev2); 251 return; 252 } 253 254 /* Non interleaved V2 dualpoint has separate stick button bits */ 255 if (priv->proto_version == ALPS_PROTO_V2 && 256 priv->flags == (ALPS_PASS | ALPS_DUALPOINT)) { 257 left |= packet[0] & 1; 258 right |= packet[0] & 2; 259 middle |= packet[0] & 4; 260 } 261 262 alps_report_buttons(dev, dev2, left, right, middle); 263 264 /* Convert hardware tap to a reasonable Z value */ 265 if (ges && !fin) 266 z = 40; 267 268 /* 269 * A "tap and drag" operation is reported by the hardware as a transition 270 * from (!fin && ges) to (fin && ges). This should be translated to the 271 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually. 272 */ 273 if (ges && fin && !priv->prev_fin) { 274 input_report_abs(dev, ABS_X, x); 275 input_report_abs(dev, ABS_Y, y); 276 input_report_abs(dev, ABS_PRESSURE, 0); 277 input_report_key(dev, BTN_TOOL_FINGER, 0); 278 input_sync(dev); 279 } 280 priv->prev_fin = fin; 281 282 if (z > 30) 283 input_report_key(dev, BTN_TOUCH, 1); 284 if (z < 25) 285 input_report_key(dev, BTN_TOUCH, 0); 286 287 if (z > 0) { 288 input_report_abs(dev, ABS_X, x); 289 input_report_abs(dev, ABS_Y, y); 290 } 291 292 input_report_abs(dev, ABS_PRESSURE, z); 293 input_report_key(dev, BTN_TOOL_FINGER, z > 0); 294 295 if (priv->flags & ALPS_WHEEL) 296 input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07)); 297 298 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 299 input_report_key(dev, BTN_FORWARD, forward); 300 input_report_key(dev, BTN_BACK, back); 301 } 302 303 if (priv->flags & ALPS_FOUR_BUTTONS) { 304 input_report_key(dev, BTN_0, packet[2] & 4); 305 input_report_key(dev, BTN_1, packet[0] & 0x10); 306 input_report_key(dev, BTN_2, packet[3] & 4); 307 input_report_key(dev, BTN_3, packet[0] & 0x20); 308 } 309 310 input_sync(dev); 311 } 312 313 static void alps_get_bitmap_points(unsigned int map, 314 struct alps_bitmap_point *low, 315 struct alps_bitmap_point *high, 316 int *fingers) 317 { 318 struct alps_bitmap_point *point; 319 int i, bit, prev_bit = 0; 320 321 point = low; 322 for (i = 0; map != 0; i++, map >>= 1) { 323 bit = map & 1; 324 if (bit) { 325 if (!prev_bit) { 326 point->start_bit = i; 327 point->num_bits = 0; 328 (*fingers)++; 329 } 330 point->num_bits++; 331 } else { 332 if (prev_bit) 333 point = high; 334 } 335 prev_bit = bit; 336 } 337 } 338 339 /* 340 * Process bitmap data from semi-mt protocols. Returns the number of 341 * fingers detected. A return value of 0 means at least one of the 342 * bitmaps was empty. 343 * 344 * The bitmaps don't have enough data to track fingers, so this function 345 * only generates points representing a bounding box of all contacts. 346 * These points are returned in fields->mt when the return value 347 * is greater than 0. 348 */ 349 static int alps_process_bitmap(struct alps_data *priv, 350 struct alps_fields *fields) 351 { 352 int i, fingers_x = 0, fingers_y = 0, fingers, closest; 353 struct alps_bitmap_point x_low = {0,}, x_high = {0,}; 354 struct alps_bitmap_point y_low = {0,}, y_high = {0,}; 355 struct input_mt_pos corner[4]; 356 357 if (!fields->x_map || !fields->y_map) 358 return 0; 359 360 alps_get_bitmap_points(fields->x_map, &x_low, &x_high, &fingers_x); 361 alps_get_bitmap_points(fields->y_map, &y_low, &y_high, &fingers_y); 362 363 /* 364 * Fingers can overlap, so we use the maximum count of fingers 365 * on either axis as the finger count. 366 */ 367 fingers = max(fingers_x, fingers_y); 368 369 /* 370 * If an axis reports only a single contact, we have overlapping or 371 * adjacent fingers. Divide the single contact between the two points. 372 */ 373 if (fingers_x == 1) { 374 i = (x_low.num_bits - 1) / 2; 375 x_low.num_bits = x_low.num_bits - i; 376 x_high.start_bit = x_low.start_bit + i; 377 x_high.num_bits = max(i, 1); 378 } 379 if (fingers_y == 1) { 380 i = (y_low.num_bits - 1) / 2; 381 y_low.num_bits = y_low.num_bits - i; 382 y_high.start_bit = y_low.start_bit + i; 383 y_high.num_bits = max(i, 1); 384 } 385 386 /* top-left corner */ 387 corner[0].x = 388 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) / 389 (2 * (priv->x_bits - 1)); 390 corner[0].y = 391 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) / 392 (2 * (priv->y_bits - 1)); 393 394 /* top-right corner */ 395 corner[1].x = 396 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) / 397 (2 * (priv->x_bits - 1)); 398 corner[1].y = 399 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) / 400 (2 * (priv->y_bits - 1)); 401 402 /* bottom-right corner */ 403 corner[2].x = 404 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) / 405 (2 * (priv->x_bits - 1)); 406 corner[2].y = 407 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) / 408 (2 * (priv->y_bits - 1)); 409 410 /* bottom-left corner */ 411 corner[3].x = 412 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) / 413 (2 * (priv->x_bits - 1)); 414 corner[3].y = 415 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) / 416 (2 * (priv->y_bits - 1)); 417 418 /* x-bitmap order is reversed on v5 touchpads */ 419 if (priv->proto_version == ALPS_PROTO_V5) { 420 for (i = 0; i < 4; i++) 421 corner[i].x = priv->x_max - corner[i].x; 422 } 423 424 /* y-bitmap order is reversed on v3 and v4 touchpads */ 425 if (priv->proto_version == ALPS_PROTO_V3 || 426 priv->proto_version == ALPS_PROTO_V4) { 427 for (i = 0; i < 4; i++) 428 corner[i].y = priv->y_max - corner[i].y; 429 } 430 431 /* 432 * We only select a corner for the second touch once per 2 finger 433 * touch sequence to avoid the chosen corner (and thus the coordinates) 434 * jumping around when the first touch is in the middle. 435 */ 436 if (priv->second_touch == -1) { 437 /* Find corner closest to our st coordinates */ 438 closest = 0x7fffffff; 439 for (i = 0; i < 4; i++) { 440 int dx = fields->st.x - corner[i].x; 441 int dy = fields->st.y - corner[i].y; 442 int distance = dx * dx + dy * dy; 443 444 if (distance < closest) { 445 priv->second_touch = i; 446 closest = distance; 447 } 448 } 449 /* And select the opposite corner to use for the 2nd touch */ 450 priv->second_touch = (priv->second_touch + 2) % 4; 451 } 452 453 fields->mt[0] = fields->st; 454 fields->mt[1] = corner[priv->second_touch]; 455 456 return fingers; 457 } 458 459 static void alps_set_slot(struct input_dev *dev, int slot, int x, int y) 460 { 461 input_mt_slot(dev, slot); 462 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); 463 input_report_abs(dev, ABS_MT_POSITION_X, x); 464 input_report_abs(dev, ABS_MT_POSITION_Y, y); 465 } 466 467 static void alps_report_mt_data(struct psmouse *psmouse, int n) 468 { 469 struct alps_data *priv = psmouse->private; 470 struct input_dev *dev = psmouse->dev; 471 struct alps_fields *f = &priv->f; 472 int i, slot[MAX_TOUCHES]; 473 474 input_mt_assign_slots(dev, slot, f->mt, n, 0); 475 for (i = 0; i < n; i++) 476 alps_set_slot(dev, slot[i], f->mt[i].x, f->mt[i].y); 477 478 input_mt_sync_frame(dev); 479 } 480 481 static void alps_report_semi_mt_data(struct psmouse *psmouse, int fingers) 482 { 483 struct alps_data *priv = psmouse->private; 484 struct input_dev *dev = psmouse->dev; 485 struct alps_fields *f = &priv->f; 486 487 /* Use st data when we don't have mt data */ 488 if (fingers < 2) { 489 f->mt[0].x = f->st.x; 490 f->mt[0].y = f->st.y; 491 fingers = f->pressure > 0 ? 1 : 0; 492 priv->second_touch = -1; 493 } 494 495 if (fingers >= 1) 496 alps_set_slot(dev, 0, f->mt[0].x, f->mt[0].y); 497 if (fingers >= 2) 498 alps_set_slot(dev, 1, f->mt[1].x, f->mt[1].y); 499 input_mt_sync_frame(dev); 500 501 input_mt_report_finger_count(dev, fingers); 502 503 input_report_key(dev, BTN_LEFT, f->left); 504 input_report_key(dev, BTN_RIGHT, f->right); 505 input_report_key(dev, BTN_MIDDLE, f->middle); 506 507 input_report_abs(dev, ABS_PRESSURE, f->pressure); 508 509 input_sync(dev); 510 } 511 512 static void alps_process_trackstick_packet_v3(struct psmouse *psmouse) 513 { 514 struct alps_data *priv = psmouse->private; 515 unsigned char *packet = psmouse->packet; 516 struct input_dev *dev = priv->dev2; 517 int x, y, z, left, right, middle; 518 519 /* It should be a DualPoint when received trackstick packet */ 520 if (!(priv->flags & ALPS_DUALPOINT)) { 521 psmouse_warn(psmouse, 522 "Rejected trackstick packet from non DualPoint device"); 523 return; 524 } 525 526 /* Sanity check packet */ 527 if (!(packet[0] & 0x40)) { 528 psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n"); 529 return; 530 } 531 532 /* 533 * There's a special packet that seems to indicate the end 534 * of a stream of trackstick data. Filter these out. 535 */ 536 if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f) 537 return; 538 539 x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f)); 540 y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f)); 541 z = (packet[4] & 0x7c) >> 2; 542 543 /* 544 * The x and y values tend to be quite large, and when used 545 * alone the trackstick is difficult to use. Scale them down 546 * to compensate. 547 */ 548 x /= 8; 549 y /= 8; 550 551 input_report_rel(dev, REL_X, x); 552 input_report_rel(dev, REL_Y, -y); 553 554 /* 555 * Most ALPS models report the trackstick buttons in the touchpad 556 * packets, but a few report them here. No reliable way has been 557 * found to differentiate between the models upfront, so we enable 558 * the quirk in response to seeing a button press in the trackstick 559 * packet. 560 */ 561 left = packet[3] & 0x01; 562 right = packet[3] & 0x02; 563 middle = packet[3] & 0x04; 564 565 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) && 566 (left || right || middle)) 567 priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS; 568 569 if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) { 570 input_report_key(dev, BTN_LEFT, left); 571 input_report_key(dev, BTN_RIGHT, right); 572 input_report_key(dev, BTN_MIDDLE, middle); 573 } 574 575 input_sync(dev); 576 return; 577 } 578 579 static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p) 580 { 581 f->left = !!(p[3] & 0x01); 582 f->right = !!(p[3] & 0x02); 583 f->middle = !!(p[3] & 0x04); 584 585 f->ts_left = !!(p[3] & 0x10); 586 f->ts_right = !!(p[3] & 0x20); 587 f->ts_middle = !!(p[3] & 0x40); 588 } 589 590 static int alps_decode_pinnacle(struct alps_fields *f, unsigned char *p, 591 struct psmouse *psmouse) 592 { 593 f->first_mp = !!(p[4] & 0x40); 594 f->is_mp = !!(p[0] & 0x40); 595 596 if (f->is_mp) { 597 f->fingers = (p[5] & 0x3) + 1; 598 f->x_map = ((p[4] & 0x7e) << 8) | 599 ((p[1] & 0x7f) << 2) | 600 ((p[0] & 0x30) >> 4); 601 f->y_map = ((p[3] & 0x70) << 4) | 602 ((p[2] & 0x7f) << 1) | 603 (p[4] & 0x01); 604 } else { 605 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | 606 ((p[0] & 0x30) >> 4); 607 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); 608 f->pressure = p[5] & 0x7f; 609 610 alps_decode_buttons_v3(f, p); 611 } 612 613 return 0; 614 } 615 616 static int alps_decode_rushmore(struct alps_fields *f, unsigned char *p, 617 struct psmouse *psmouse) 618 { 619 f->first_mp = !!(p[4] & 0x40); 620 f->is_mp = !!(p[5] & 0x40); 621 622 if (f->is_mp) { 623 f->fingers = max((p[5] & 0x3), ((p[5] >> 2) & 0x3)) + 1; 624 f->x_map = ((p[5] & 0x10) << 11) | 625 ((p[4] & 0x7e) << 8) | 626 ((p[1] & 0x7f) << 2) | 627 ((p[0] & 0x30) >> 4); 628 f->y_map = ((p[5] & 0x20) << 6) | 629 ((p[3] & 0x70) << 4) | 630 ((p[2] & 0x7f) << 1) | 631 (p[4] & 0x01); 632 } else { 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 } 640 641 return 0; 642 } 643 644 static int alps_decode_dolphin(struct alps_fields *f, unsigned char *p, 645 struct psmouse *psmouse) 646 { 647 u64 palm_data = 0; 648 struct alps_data *priv = psmouse->private; 649 650 f->first_mp = !!(p[0] & 0x02); 651 f->is_mp = !!(p[0] & 0x20); 652 653 if (!f->is_mp) { 654 f->st.x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7)); 655 f->st.y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3)); 656 f->pressure = (p[0] & 4) ? 0 : p[5] & 0x7f; 657 alps_decode_buttons_v3(f, p); 658 } else { 659 f->fingers = ((p[0] & 0x6) >> 1 | 660 (p[0] & 0x10) >> 2); 661 662 palm_data = (p[1] & 0x7f) | 663 ((p[2] & 0x7f) << 7) | 664 ((p[4] & 0x7f) << 14) | 665 ((p[5] & 0x7f) << 21) | 666 ((p[3] & 0x07) << 28) | 667 (((u64)p[3] & 0x70) << 27) | 668 (((u64)p[0] & 0x01) << 34); 669 670 /* Y-profile is stored in P(0) to p(n-1), n = y_bits; */ 671 f->y_map = palm_data & (BIT(priv->y_bits) - 1); 672 673 /* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */ 674 f->x_map = (palm_data >> priv->y_bits) & 675 (BIT(priv->x_bits) - 1); 676 } 677 678 return 0; 679 } 680 681 static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse) 682 { 683 struct alps_data *priv = psmouse->private; 684 unsigned char *packet = psmouse->packet; 685 struct input_dev *dev2 = priv->dev2; 686 struct alps_fields *f = &priv->f; 687 int fingers = 0; 688 689 memset(f, 0, sizeof(*f)); 690 691 priv->decode_fields(f, packet, psmouse); 692 693 /* 694 * There's no single feature of touchpad position and bitmap packets 695 * that can be used to distinguish between them. We rely on the fact 696 * that a bitmap packet should always follow a position packet with 697 * bit 6 of packet[4] set. 698 */ 699 if (priv->multi_packet) { 700 /* 701 * Sometimes a position packet will indicate a multi-packet 702 * sequence, but then what follows is another position 703 * packet. Check for this, and when it happens process the 704 * position packet as usual. 705 */ 706 if (f->is_mp) { 707 fingers = f->fingers; 708 /* 709 * Bitmap processing uses position packet's coordinate 710 * data, so we need to do decode it first. 711 */ 712 priv->decode_fields(f, priv->multi_data, psmouse); 713 if (alps_process_bitmap(priv, f) == 0) 714 fingers = 0; /* Use st data */ 715 } else { 716 priv->multi_packet = 0; 717 } 718 } 719 720 /* 721 * Bit 6 of byte 0 is not usually set in position packets. The only 722 * times it seems to be set is in situations where the data is 723 * suspect anyway, e.g. a palm resting flat on the touchpad. Given 724 * this combined with the fact that this bit is useful for filtering 725 * out misidentified bitmap packets, we reject anything with this 726 * bit set. 727 */ 728 if (f->is_mp) 729 return; 730 731 if (!priv->multi_packet && f->first_mp) { 732 priv->multi_packet = 1; 733 memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); 734 return; 735 } 736 737 priv->multi_packet = 0; 738 739 /* 740 * Sometimes the hardware sends a single packet with z = 0 741 * in the middle of a stream. Real releases generate packets 742 * with x, y, and z all zero, so these seem to be flukes. 743 * Ignore them. 744 */ 745 if (f->st.x && f->st.y && !f->pressure) 746 return; 747 748 alps_report_semi_mt_data(psmouse, fingers); 749 750 if ((priv->flags & ALPS_DUALPOINT) && 751 !(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) { 752 input_report_key(dev2, BTN_LEFT, f->ts_left); 753 input_report_key(dev2, BTN_RIGHT, f->ts_right); 754 input_report_key(dev2, BTN_MIDDLE, f->ts_middle); 755 input_sync(dev2); 756 } 757 } 758 759 static void alps_process_packet_v3(struct psmouse *psmouse) 760 { 761 unsigned char *packet = psmouse->packet; 762 763 /* 764 * v3 protocol packets come in three types, two representing 765 * touchpad data and one representing trackstick data. 766 * Trackstick packets seem to be distinguished by always 767 * having 0x3f in the last byte. This value has never been 768 * observed in the last byte of either of the other types 769 * of packets. 770 */ 771 if (packet[5] == 0x3f) { 772 alps_process_trackstick_packet_v3(psmouse); 773 return; 774 } 775 776 alps_process_touchpad_packet_v3_v5(psmouse); 777 } 778 779 static void alps_process_packet_v6(struct psmouse *psmouse) 780 { 781 struct alps_data *priv = psmouse->private; 782 unsigned char *packet = psmouse->packet; 783 struct input_dev *dev = psmouse->dev; 784 struct input_dev *dev2 = priv->dev2; 785 int x, y, z, left, right, middle; 786 787 /* 788 * We can use Byte5 to distinguish if the packet is from Touchpad 789 * or Trackpoint. 790 * Touchpad: 0 - 0x7E 791 * Trackpoint: 0x7F 792 */ 793 if (packet[5] == 0x7F) { 794 /* It should be a DualPoint when received Trackpoint packet */ 795 if (!(priv->flags & ALPS_DUALPOINT)) { 796 psmouse_warn(psmouse, 797 "Rejected trackstick packet from non DualPoint device"); 798 return; 799 } 800 801 /* Trackpoint packet */ 802 x = packet[1] | ((packet[3] & 0x20) << 2); 803 y = packet[2] | ((packet[3] & 0x40) << 1); 804 z = packet[4]; 805 left = packet[3] & 0x01; 806 right = packet[3] & 0x02; 807 middle = packet[3] & 0x04; 808 809 /* To prevent the cursor jump when finger lifted */ 810 if (x == 0x7F && y == 0x7F && z == 0x7F) 811 x = y = z = 0; 812 813 /* Divide 4 since trackpoint's speed is too fast */ 814 input_report_rel(dev2, REL_X, (char)x / 4); 815 input_report_rel(dev2, REL_Y, -((char)y / 4)); 816 817 input_report_key(dev2, BTN_LEFT, left); 818 input_report_key(dev2, BTN_RIGHT, right); 819 input_report_key(dev2, BTN_MIDDLE, middle); 820 821 input_sync(dev2); 822 return; 823 } 824 825 /* Touchpad packet */ 826 x = packet[1] | ((packet[3] & 0x78) << 4); 827 y = packet[2] | ((packet[4] & 0x78) << 4); 828 z = packet[5]; 829 left = packet[3] & 0x01; 830 right = packet[3] & 0x02; 831 832 if (z > 30) 833 input_report_key(dev, BTN_TOUCH, 1); 834 if (z < 25) 835 input_report_key(dev, BTN_TOUCH, 0); 836 837 if (z > 0) { 838 input_report_abs(dev, ABS_X, x); 839 input_report_abs(dev, ABS_Y, y); 840 } 841 842 input_report_abs(dev, ABS_PRESSURE, z); 843 input_report_key(dev, BTN_TOOL_FINGER, z > 0); 844 845 /* v6 touchpad does not have middle button */ 846 input_report_key(dev, BTN_LEFT, left); 847 input_report_key(dev, BTN_RIGHT, right); 848 849 input_sync(dev); 850 } 851 852 static void alps_process_packet_v4(struct psmouse *psmouse) 853 { 854 struct alps_data *priv = psmouse->private; 855 unsigned char *packet = psmouse->packet; 856 struct alps_fields *f = &priv->f; 857 int offset; 858 859 /* 860 * v4 has a 6-byte encoding for bitmap data, but this data is 861 * broken up between 3 normal packets. Use priv->multi_packet to 862 * track our position in the bitmap packet. 863 */ 864 if (packet[6] & 0x40) { 865 /* sync, reset position */ 866 priv->multi_packet = 0; 867 } 868 869 if (WARN_ON_ONCE(priv->multi_packet > 2)) 870 return; 871 872 offset = 2 * priv->multi_packet; 873 priv->multi_data[offset] = packet[6]; 874 priv->multi_data[offset + 1] = packet[7]; 875 876 f->left = !!(packet[4] & 0x01); 877 f->right = !!(packet[4] & 0x02); 878 879 f->st.x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) | 880 ((packet[0] & 0x30) >> 4); 881 f->st.y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f); 882 f->pressure = packet[5] & 0x7f; 883 884 if (++priv->multi_packet > 2) { 885 priv->multi_packet = 0; 886 887 f->x_map = ((priv->multi_data[2] & 0x1f) << 10) | 888 ((priv->multi_data[3] & 0x60) << 3) | 889 ((priv->multi_data[0] & 0x3f) << 2) | 890 ((priv->multi_data[1] & 0x60) >> 5); 891 f->y_map = ((priv->multi_data[5] & 0x01) << 10) | 892 ((priv->multi_data[3] & 0x1f) << 5) | 893 (priv->multi_data[1] & 0x1f); 894 895 f->fingers = alps_process_bitmap(priv, f); 896 } 897 898 alps_report_semi_mt_data(psmouse, f->fingers); 899 } 900 901 static bool alps_is_valid_package_v7(struct psmouse *psmouse) 902 { 903 switch (psmouse->pktcnt) { 904 case 3: 905 return (psmouse->packet[2] & 0x40) == 0x40; 906 case 4: 907 return (psmouse->packet[3] & 0x48) == 0x48; 908 case 6: 909 return (psmouse->packet[5] & 0x40) == 0x00; 910 } 911 return true; 912 } 913 914 static unsigned char alps_get_packet_id_v7(char *byte) 915 { 916 unsigned char packet_id; 917 918 if (byte[4] & 0x40) 919 packet_id = V7_PACKET_ID_TWO; 920 else if (byte[4] & 0x01) 921 packet_id = V7_PACKET_ID_MULTI; 922 else if ((byte[0] & 0x10) && !(byte[4] & 0x43)) 923 packet_id = V7_PACKET_ID_NEW; 924 else if (byte[1] == 0x00 && byte[4] == 0x00) 925 packet_id = V7_PACKET_ID_IDLE; 926 else 927 packet_id = V7_PACKET_ID_UNKNOWN; 928 929 return packet_id; 930 } 931 932 static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt, 933 unsigned char *pkt, 934 unsigned char pkt_id) 935 { 936 mt[0].x = ((pkt[2] & 0x80) << 4); 937 mt[0].x |= ((pkt[2] & 0x3F) << 5); 938 mt[0].x |= ((pkt[3] & 0x30) >> 1); 939 mt[0].x |= (pkt[3] & 0x07); 940 mt[0].y = (pkt[1] << 3) | (pkt[0] & 0x07); 941 942 mt[1].x = ((pkt[3] & 0x80) << 4); 943 mt[1].x |= ((pkt[4] & 0x80) << 3); 944 mt[1].x |= ((pkt[4] & 0x3F) << 4); 945 mt[1].y = ((pkt[5] & 0x80) << 3); 946 mt[1].y |= ((pkt[5] & 0x3F) << 4); 947 948 switch (pkt_id) { 949 case V7_PACKET_ID_TWO: 950 mt[1].x &= ~0x000F; 951 mt[1].y |= 0x000F; 952 /* Detect false-postive touches where x & y report max value */ 953 if (mt[1].y == 0x7ff && mt[1].x == 0xff0) { 954 mt[1].x = 0; 955 /* y gets set to 0 at the end of this function */ 956 } 957 break; 958 959 case V7_PACKET_ID_MULTI: 960 mt[1].x &= ~0x003F; 961 mt[1].y &= ~0x0020; 962 mt[1].y |= ((pkt[4] & 0x02) << 4); 963 mt[1].y |= 0x001F; 964 break; 965 966 case V7_PACKET_ID_NEW: 967 mt[1].x &= ~0x003F; 968 mt[1].x |= (pkt[0] & 0x20); 969 mt[1].y |= 0x000F; 970 break; 971 } 972 973 mt[0].y = 0x7FF - mt[0].y; 974 mt[1].y = 0x7FF - mt[1].y; 975 } 976 977 static int alps_get_mt_count(struct input_mt_pos *mt) 978 { 979 int i, fingers = 0; 980 981 for (i = 0; i < MAX_TOUCHES; i++) { 982 if (mt[i].x != 0 || mt[i].y != 0) 983 fingers++; 984 } 985 986 return fingers; 987 } 988 989 static int alps_decode_packet_v7(struct alps_fields *f, 990 unsigned char *p, 991 struct psmouse *psmouse) 992 { 993 struct alps_data *priv = psmouse->private; 994 unsigned char pkt_id; 995 996 pkt_id = alps_get_packet_id_v7(p); 997 if (pkt_id == V7_PACKET_ID_IDLE) 998 return 0; 999 if (pkt_id == V7_PACKET_ID_UNKNOWN) 1000 return -1; 1001 /* 1002 * NEW packets are send to indicate a discontinuity in the finger 1003 * coordinate reporting. Specifically a finger may have moved from 1004 * slot 0 to 1 or vice versa. INPUT_MT_TRACK takes care of this for 1005 * us. 1006 * 1007 * NEW packets have 3 problems: 1008 * 1) They do not contain middle / right button info (on non clickpads) 1009 * this can be worked around by preserving the old button state 1010 * 2) They do not contain an accurate fingercount, and they are 1011 * typically send when the number of fingers changes. We cannot use 1012 * the old finger count as that may mismatch with the amount of 1013 * touch coordinates we've available in the NEW packet 1014 * 3) Their x data for the second touch is inaccurate leading to 1015 * a possible jump of the x coordinate by 16 units when the first 1016 * non NEW packet comes in 1017 * Since problems 2 & 3 cannot be worked around, just ignore them. 1018 */ 1019 if (pkt_id == V7_PACKET_ID_NEW) 1020 return 1; 1021 1022 alps_get_finger_coordinate_v7(f->mt, p, pkt_id); 1023 1024 if (pkt_id == V7_PACKET_ID_TWO) 1025 f->fingers = alps_get_mt_count(f->mt); 1026 else /* pkt_id == V7_PACKET_ID_MULTI */ 1027 f->fingers = 3 + (p[5] & 0x03); 1028 1029 f->left = (p[0] & 0x80) >> 7; 1030 if (priv->flags & ALPS_BUTTONPAD) { 1031 if (p[0] & 0x20) 1032 f->fingers++; 1033 if (p[0] & 0x10) 1034 f->fingers++; 1035 } else { 1036 f->right = (p[0] & 0x20) >> 5; 1037 f->middle = (p[0] & 0x10) >> 4; 1038 } 1039 1040 /* Sometimes a single touch is reported in mt[1] rather then mt[0] */ 1041 if (f->fingers == 1 && f->mt[0].x == 0 && f->mt[0].y == 0) { 1042 f->mt[0].x = f->mt[1].x; 1043 f->mt[0].y = f->mt[1].y; 1044 f->mt[1].x = 0; 1045 f->mt[1].y = 0; 1046 } 1047 1048 return 0; 1049 } 1050 1051 static void alps_process_trackstick_packet_v7(struct psmouse *psmouse) 1052 { 1053 struct alps_data *priv = psmouse->private; 1054 unsigned char *packet = psmouse->packet; 1055 struct input_dev *dev2 = priv->dev2; 1056 int x, y, z, left, right, middle; 1057 1058 /* It should be a DualPoint when received trackstick packet */ 1059 if (!(priv->flags & ALPS_DUALPOINT)) { 1060 psmouse_warn(psmouse, 1061 "Rejected trackstick packet from non DualPoint device"); 1062 return; 1063 } 1064 1065 x = ((packet[2] & 0xbf)) | ((packet[3] & 0x10) << 2); 1066 y = (packet[3] & 0x07) | (packet[4] & 0xb8) | 1067 ((packet[3] & 0x20) << 1); 1068 z = (packet[5] & 0x3f) | ((packet[3] & 0x80) >> 1); 1069 1070 left = (packet[1] & 0x01); 1071 right = (packet[1] & 0x02) >> 1; 1072 middle = (packet[1] & 0x04) >> 2; 1073 1074 input_report_rel(dev2, REL_X, (char)x); 1075 input_report_rel(dev2, REL_Y, -((char)y)); 1076 1077 input_report_key(dev2, BTN_LEFT, left); 1078 input_report_key(dev2, BTN_RIGHT, right); 1079 input_report_key(dev2, BTN_MIDDLE, middle); 1080 1081 input_sync(dev2); 1082 } 1083 1084 static void alps_process_touchpad_packet_v7(struct psmouse *psmouse) 1085 { 1086 struct alps_data *priv = psmouse->private; 1087 struct input_dev *dev = psmouse->dev; 1088 struct alps_fields *f = &priv->f; 1089 1090 memset(f, 0, sizeof(*f)); 1091 1092 if (priv->decode_fields(f, psmouse->packet, psmouse)) 1093 return; 1094 1095 alps_report_mt_data(psmouse, alps_get_mt_count(f->mt)); 1096 1097 input_mt_report_finger_count(dev, f->fingers); 1098 1099 input_report_key(dev, BTN_LEFT, f->left); 1100 input_report_key(dev, BTN_RIGHT, f->right); 1101 input_report_key(dev, BTN_MIDDLE, f->middle); 1102 1103 input_sync(dev); 1104 } 1105 1106 static void alps_process_packet_v7(struct psmouse *psmouse) 1107 { 1108 unsigned char *packet = psmouse->packet; 1109 1110 if (packet[0] == 0x48 && (packet[4] & 0x47) == 0x06) 1111 alps_process_trackstick_packet_v7(psmouse); 1112 else 1113 alps_process_touchpad_packet_v7(psmouse); 1114 } 1115 1116 static unsigned char alps_get_pkt_id_ss4_v2(unsigned char *byte) 1117 { 1118 unsigned char pkt_id = SS4_PACKET_ID_IDLE; 1119 1120 if (byte[0] == 0x18 && byte[1] == 0x10 && byte[2] == 0x00 && 1121 (byte[3] & 0x88) == 0x08 && byte[4] == 0x10 && byte[5] == 0x00) { 1122 pkt_id = SS4_PACKET_ID_IDLE; 1123 } else if (!(byte[3] & 0x10)) { 1124 pkt_id = SS4_PACKET_ID_ONE; 1125 } else if (!(byte[3] & 0x20)) { 1126 pkt_id = SS4_PACKET_ID_TWO; 1127 } else { 1128 pkt_id = SS4_PACKET_ID_MULTI; 1129 } 1130 1131 return pkt_id; 1132 } 1133 1134 static int alps_decode_ss4_v2(struct alps_fields *f, 1135 unsigned char *p, struct psmouse *psmouse) 1136 { 1137 struct alps_data *priv = psmouse->private; 1138 unsigned char pkt_id; 1139 unsigned int no_data_x, no_data_y; 1140 1141 pkt_id = alps_get_pkt_id_ss4_v2(p); 1142 1143 /* Current packet is 1Finger coordinate packet */ 1144 switch (pkt_id) { 1145 case SS4_PACKET_ID_ONE: 1146 f->mt[0].x = SS4_1F_X_V2(p); 1147 f->mt[0].y = SS4_1F_Y_V2(p); 1148 f->pressure = ((SS4_1F_Z_V2(p)) * 2) & 0x7f; 1149 f->fingers = 1; 1150 f->first_mp = 0; 1151 f->is_mp = 0; 1152 break; 1153 1154 case SS4_PACKET_ID_TWO: 1155 if (priv->flags & ALPS_BUTTONPAD) { 1156 f->mt[0].x = SS4_BTL_MF_X_V2(p, 0); 1157 f->mt[0].y = SS4_BTL_MF_Y_V2(p, 0); 1158 f->mt[1].x = SS4_BTL_MF_X_V2(p, 1); 1159 f->mt[1].y = SS4_BTL_MF_Y_V2(p, 1); 1160 } else { 1161 f->mt[0].x = SS4_STD_MF_X_V2(p, 0); 1162 f->mt[0].y = SS4_STD_MF_Y_V2(p, 0); 1163 f->mt[1].x = SS4_STD_MF_X_V2(p, 1); 1164 f->mt[1].y = SS4_STD_MF_Y_V2(p, 1); 1165 } 1166 f->pressure = SS4_MF_Z_V2(p, 0) ? 0x30 : 0; 1167 1168 if (SS4_IS_MF_CONTINUE(p)) { 1169 f->first_mp = 1; 1170 } else { 1171 f->fingers = 2; 1172 f->first_mp = 0; 1173 } 1174 f->is_mp = 0; 1175 1176 break; 1177 1178 case SS4_PACKET_ID_MULTI: 1179 if (priv->flags & ALPS_BUTTONPAD) { 1180 f->mt[2].x = SS4_BTL_MF_X_V2(p, 0); 1181 f->mt[2].y = SS4_BTL_MF_Y_V2(p, 0); 1182 f->mt[3].x = SS4_BTL_MF_X_V2(p, 1); 1183 f->mt[3].y = SS4_BTL_MF_Y_V2(p, 1); 1184 no_data_x = SS4_MFPACKET_NO_AX_BL; 1185 no_data_y = SS4_MFPACKET_NO_AY_BL; 1186 } else { 1187 f->mt[2].x = SS4_STD_MF_X_V2(p, 0); 1188 f->mt[2].y = SS4_STD_MF_Y_V2(p, 0); 1189 f->mt[3].x = SS4_STD_MF_X_V2(p, 1); 1190 f->mt[3].y = SS4_STD_MF_Y_V2(p, 1); 1191 no_data_x = SS4_MFPACKET_NO_AX; 1192 no_data_y = SS4_MFPACKET_NO_AY; 1193 } 1194 1195 f->first_mp = 0; 1196 f->is_mp = 1; 1197 1198 if (SS4_IS_5F_DETECTED(p)) { 1199 f->fingers = 5; 1200 } else if (f->mt[3].x == no_data_x && 1201 f->mt[3].y == no_data_y) { 1202 f->mt[3].x = 0; 1203 f->mt[3].y = 0; 1204 f->fingers = 3; 1205 } else { 1206 f->fingers = 4; 1207 } 1208 break; 1209 1210 case SS4_PACKET_ID_IDLE: 1211 default: 1212 memset(f, 0, sizeof(struct alps_fields)); 1213 break; 1214 } 1215 1216 f->left = !!(SS4_BTN_V2(p) & 0x01); 1217 if (!(priv->flags & ALPS_BUTTONPAD)) { 1218 f->right = !!(SS4_BTN_V2(p) & 0x02); 1219 f->middle = !!(SS4_BTN_V2(p) & 0x04); 1220 } 1221 1222 return 0; 1223 } 1224 1225 static void alps_process_packet_ss4_v2(struct psmouse *psmouse) 1226 { 1227 struct alps_data *priv = psmouse->private; 1228 unsigned char *packet = psmouse->packet; 1229 struct input_dev *dev = psmouse->dev; 1230 struct alps_fields *f = &priv->f; 1231 1232 memset(f, 0, sizeof(struct alps_fields)); 1233 priv->decode_fields(f, packet, psmouse); 1234 if (priv->multi_packet) { 1235 /* 1236 * Sometimes the first packet will indicate a multi-packet 1237 * sequence, but sometimes the next multi-packet would not 1238 * come. Check for this, and when it happens process the 1239 * position packet as usual. 1240 */ 1241 if (f->is_mp) { 1242 /* Now process the 1st packet */ 1243 priv->decode_fields(f, priv->multi_data, psmouse); 1244 } else { 1245 priv->multi_packet = 0; 1246 } 1247 } 1248 1249 /* 1250 * "f.is_mp" would always be '0' after merging the 1st and 2nd packet. 1251 * When it is set, it means 2nd packet comes without 1st packet come. 1252 */ 1253 if (f->is_mp) 1254 return; 1255 1256 /* Save the first packet */ 1257 if (!priv->multi_packet && f->first_mp) { 1258 priv->multi_packet = 1; 1259 memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); 1260 return; 1261 } 1262 1263 priv->multi_packet = 0; 1264 1265 alps_report_mt_data(psmouse, (f->fingers <= 4) ? f->fingers : 4); 1266 1267 input_mt_report_finger_count(dev, f->fingers); 1268 1269 input_report_key(dev, BTN_LEFT, f->left); 1270 input_report_key(dev, BTN_RIGHT, f->right); 1271 input_report_key(dev, BTN_MIDDLE, f->middle); 1272 1273 input_report_abs(dev, ABS_PRESSURE, f->pressure); 1274 input_sync(dev); 1275 } 1276 1277 static bool alps_is_valid_package_ss4_v2(struct psmouse *psmouse) 1278 { 1279 if (psmouse->pktcnt == 4 && ((psmouse->packet[3] & 0x08) != 0x08)) 1280 return false; 1281 if (psmouse->pktcnt == 6 && ((psmouse->packet[5] & 0x10) != 0x0)) 1282 return false; 1283 return true; 1284 } 1285 1286 static DEFINE_MUTEX(alps_mutex); 1287 1288 static void alps_register_bare_ps2_mouse(struct work_struct *work) 1289 { 1290 struct alps_data *priv = 1291 container_of(work, struct alps_data, dev3_register_work.work); 1292 struct psmouse *psmouse = priv->psmouse; 1293 struct input_dev *dev3; 1294 int error = 0; 1295 1296 mutex_lock(&alps_mutex); 1297 1298 if (priv->dev3) 1299 goto out; 1300 1301 dev3 = input_allocate_device(); 1302 if (!dev3) { 1303 psmouse_err(psmouse, "failed to allocate secondary device\n"); 1304 error = -ENOMEM; 1305 goto out; 1306 } 1307 1308 snprintf(priv->phys3, sizeof(priv->phys3), "%s/%s", 1309 psmouse->ps2dev.serio->phys, 1310 (priv->dev2 ? "input2" : "input1")); 1311 dev3->phys = priv->phys3; 1312 1313 /* 1314 * format of input device name is: "protocol vendor name" 1315 * see function psmouse_switch_protocol() in psmouse-base.c 1316 */ 1317 dev3->name = "PS/2 ALPS Mouse"; 1318 1319 dev3->id.bustype = BUS_I8042; 1320 dev3->id.vendor = 0x0002; 1321 dev3->id.product = PSMOUSE_PS2; 1322 dev3->id.version = 0x0000; 1323 dev3->dev.parent = &psmouse->ps2dev.serio->dev; 1324 1325 input_set_capability(dev3, EV_REL, REL_X); 1326 input_set_capability(dev3, EV_REL, REL_Y); 1327 input_set_capability(dev3, EV_KEY, BTN_LEFT); 1328 input_set_capability(dev3, EV_KEY, BTN_RIGHT); 1329 input_set_capability(dev3, EV_KEY, BTN_MIDDLE); 1330 1331 __set_bit(INPUT_PROP_POINTER, dev3->propbit); 1332 1333 error = input_register_device(dev3); 1334 if (error) { 1335 psmouse_err(psmouse, 1336 "failed to register secondary device: %d\n", 1337 error); 1338 input_free_device(dev3); 1339 goto out; 1340 } 1341 1342 priv->dev3 = dev3; 1343 1344 out: 1345 /* 1346 * Save the error code so that we can detect that we 1347 * already tried to create the device. 1348 */ 1349 if (error) 1350 priv->dev3 = ERR_PTR(error); 1351 1352 mutex_unlock(&alps_mutex); 1353 } 1354 1355 static void alps_report_bare_ps2_packet(struct psmouse *psmouse, 1356 unsigned char packet[], 1357 bool report_buttons) 1358 { 1359 struct alps_data *priv = psmouse->private; 1360 struct input_dev *dev, *dev2 = NULL; 1361 1362 /* Figure out which device to use to report the bare packet */ 1363 if (priv->proto_version == ALPS_PROTO_V2 && 1364 (priv->flags & ALPS_DUALPOINT)) { 1365 /* On V2 devices the DualPoint Stick reports bare packets */ 1366 dev = priv->dev2; 1367 dev2 = psmouse->dev; 1368 } else if (unlikely(IS_ERR_OR_NULL(priv->dev3))) { 1369 /* Register dev3 mouse if we received PS/2 packet first time */ 1370 if (!IS_ERR(priv->dev3)) 1371 psmouse_queue_work(psmouse, &priv->dev3_register_work, 1372 0); 1373 return; 1374 } else { 1375 dev = priv->dev3; 1376 } 1377 1378 if (report_buttons) 1379 alps_report_buttons(dev, dev2, 1380 packet[0] & 1, packet[0] & 2, packet[0] & 4); 1381 1382 input_report_rel(dev, REL_X, 1383 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0); 1384 input_report_rel(dev, REL_Y, 1385 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0); 1386 1387 input_sync(dev); 1388 } 1389 1390 static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse) 1391 { 1392 struct alps_data *priv = psmouse->private; 1393 1394 if (psmouse->pktcnt < 6) 1395 return PSMOUSE_GOOD_DATA; 1396 1397 if (psmouse->pktcnt == 6) { 1398 /* 1399 * Start a timer to flush the packet if it ends up last 1400 * 6-byte packet in the stream. Timer needs to fire 1401 * psmouse core times out itself. 20 ms should be enough 1402 * to decide if we are getting more data or not. 1403 */ 1404 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20)); 1405 return PSMOUSE_GOOD_DATA; 1406 } 1407 1408 del_timer(&priv->timer); 1409 1410 if (psmouse->packet[6] & 0x80) { 1411 1412 /* 1413 * Highest bit is set - that means we either had 1414 * complete ALPS packet and this is start of the 1415 * next packet or we got garbage. 1416 */ 1417 1418 if (((psmouse->packet[3] | 1419 psmouse->packet[4] | 1420 psmouse->packet[5]) & 0x80) || 1421 (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) { 1422 psmouse_dbg(psmouse, 1423 "refusing packet %4ph (suspected interleaved ps/2)\n", 1424 psmouse->packet + 3); 1425 return PSMOUSE_BAD_DATA; 1426 } 1427 1428 priv->process_packet(psmouse); 1429 1430 /* Continue with the next packet */ 1431 psmouse->packet[0] = psmouse->packet[6]; 1432 psmouse->pktcnt = 1; 1433 1434 } else { 1435 1436 /* 1437 * High bit is 0 - that means that we indeed got a PS/2 1438 * packet in the middle of ALPS packet. 1439 * 1440 * There is also possibility that we got 6-byte ALPS 1441 * packet followed by 3-byte packet from trackpoint. We 1442 * can not distinguish between these 2 scenarios but 1443 * because the latter is unlikely to happen in course of 1444 * normal operation (user would need to press all 1445 * buttons on the pad and start moving trackpoint 1446 * without touching the pad surface) we assume former. 1447 * Even if we are wrong the wost thing that would happen 1448 * the cursor would jump but we should not get protocol 1449 * de-synchronization. 1450 */ 1451 1452 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3], 1453 false); 1454 1455 /* 1456 * Continue with the standard ALPS protocol handling, 1457 * but make sure we won't process it as an interleaved 1458 * packet again, which may happen if all buttons are 1459 * pressed. To avoid this let's reset the 4th bit which 1460 * is normally 1. 1461 */ 1462 psmouse->packet[3] = psmouse->packet[6] & 0xf7; 1463 psmouse->pktcnt = 4; 1464 } 1465 1466 return PSMOUSE_GOOD_DATA; 1467 } 1468 1469 static void alps_flush_packet(unsigned long data) 1470 { 1471 struct psmouse *psmouse = (struct psmouse *)data; 1472 struct alps_data *priv = psmouse->private; 1473 1474 serio_pause_rx(psmouse->ps2dev.serio); 1475 1476 if (psmouse->pktcnt == psmouse->pktsize) { 1477 1478 /* 1479 * We did not any more data in reasonable amount of time. 1480 * Validate the last 3 bytes and process as a standard 1481 * ALPS packet. 1482 */ 1483 if ((psmouse->packet[3] | 1484 psmouse->packet[4] | 1485 psmouse->packet[5]) & 0x80) { 1486 psmouse_dbg(psmouse, 1487 "refusing packet %3ph (suspected interleaved ps/2)\n", 1488 psmouse->packet + 3); 1489 } else { 1490 priv->process_packet(psmouse); 1491 } 1492 psmouse->pktcnt = 0; 1493 } 1494 1495 serio_continue_rx(psmouse->ps2dev.serio); 1496 } 1497 1498 static psmouse_ret_t alps_process_byte(struct psmouse *psmouse) 1499 { 1500 struct alps_data *priv = psmouse->private; 1501 1502 /* 1503 * Check if we are dealing with a bare PS/2 packet, presumably from 1504 * a device connected to the external PS/2 port. Because bare PS/2 1505 * protocol does not have enough constant bits to self-synchronize 1506 * properly we only do this if the device is fully synchronized. 1507 * Can not distinguish V8's first byte from PS/2 packet's 1508 */ 1509 if (priv->proto_version != ALPS_PROTO_V8 && 1510 !psmouse->out_of_sync_cnt && 1511 (psmouse->packet[0] & 0xc8) == 0x08) { 1512 1513 if (psmouse->pktcnt == 3) { 1514 alps_report_bare_ps2_packet(psmouse, psmouse->packet, 1515 true); 1516 return PSMOUSE_FULL_PACKET; 1517 } 1518 return PSMOUSE_GOOD_DATA; 1519 } 1520 1521 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */ 1522 1523 if ((priv->flags & ALPS_PS2_INTERLEAVED) && 1524 psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) { 1525 return alps_handle_interleaved_ps2(psmouse); 1526 } 1527 1528 if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) { 1529 psmouse_dbg(psmouse, 1530 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n", 1531 psmouse->packet[0], priv->mask0, priv->byte0); 1532 return PSMOUSE_BAD_DATA; 1533 } 1534 1535 /* Bytes 2 - pktsize should have 0 in the highest bit */ 1536 if (priv->proto_version < ALPS_PROTO_V5 && 1537 psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize && 1538 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) { 1539 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1540 psmouse->pktcnt - 1, 1541 psmouse->packet[psmouse->pktcnt - 1]); 1542 1543 if (priv->proto_version == ALPS_PROTO_V3_RUSHMORE && 1544 psmouse->pktcnt == psmouse->pktsize) { 1545 /* 1546 * Some Dell boxes, such as Latitude E6440 or E7440 1547 * with closed lid, quite often smash last byte of 1548 * otherwise valid packet with 0xff. Given that the 1549 * next packet is very likely to be valid let's 1550 * report PSMOUSE_FULL_PACKET but not process data, 1551 * rather than reporting PSMOUSE_BAD_DATA and 1552 * filling the logs. 1553 */ 1554 return PSMOUSE_FULL_PACKET; 1555 } 1556 1557 return PSMOUSE_BAD_DATA; 1558 } 1559 1560 if ((priv->proto_version == ALPS_PROTO_V7 && 1561 !alps_is_valid_package_v7(psmouse)) || 1562 (priv->proto_version == ALPS_PROTO_V8 && 1563 !alps_is_valid_package_ss4_v2(psmouse))) { 1564 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1565 psmouse->pktcnt - 1, 1566 psmouse->packet[psmouse->pktcnt - 1]); 1567 return PSMOUSE_BAD_DATA; 1568 } 1569 1570 if (psmouse->pktcnt == psmouse->pktsize) { 1571 priv->process_packet(psmouse); 1572 return PSMOUSE_FULL_PACKET; 1573 } 1574 1575 return PSMOUSE_GOOD_DATA; 1576 } 1577 1578 static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble) 1579 { 1580 struct ps2dev *ps2dev = &psmouse->ps2dev; 1581 struct alps_data *priv = psmouse->private; 1582 int command; 1583 unsigned char *param; 1584 unsigned char dummy[4]; 1585 1586 BUG_ON(nibble > 0xf); 1587 1588 command = priv->nibble_commands[nibble].command; 1589 param = (command & 0x0f00) ? 1590 dummy : (unsigned char *)&priv->nibble_commands[nibble].data; 1591 1592 if (ps2_command(ps2dev, param, command)) 1593 return -1; 1594 1595 return 0; 1596 } 1597 1598 static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr) 1599 { 1600 struct ps2dev *ps2dev = &psmouse->ps2dev; 1601 struct alps_data *priv = psmouse->private; 1602 int i, nibble; 1603 1604 if (ps2_command(ps2dev, NULL, priv->addr_command)) 1605 return -1; 1606 1607 for (i = 12; i >= 0; i -= 4) { 1608 nibble = (addr >> i) & 0xf; 1609 if (alps_command_mode_send_nibble(psmouse, nibble)) 1610 return -1; 1611 } 1612 1613 return 0; 1614 } 1615 1616 static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1617 { 1618 struct ps2dev *ps2dev = &psmouse->ps2dev; 1619 unsigned char param[4]; 1620 1621 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1622 return -1; 1623 1624 /* 1625 * The address being read is returned in the first two bytes 1626 * of the result. Check that this address matches the expected 1627 * address. 1628 */ 1629 if (addr != ((param[0] << 8) | param[1])) 1630 return -1; 1631 1632 return param[2]; 1633 } 1634 1635 static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1636 { 1637 if (alps_command_mode_set_addr(psmouse, addr)) 1638 return -1; 1639 return __alps_command_mode_read_reg(psmouse, addr); 1640 } 1641 1642 static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value) 1643 { 1644 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf)) 1645 return -1; 1646 if (alps_command_mode_send_nibble(psmouse, value & 0xf)) 1647 return -1; 1648 return 0; 1649 } 1650 1651 static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr, 1652 u8 value) 1653 { 1654 if (alps_command_mode_set_addr(psmouse, addr)) 1655 return -1; 1656 return __alps_command_mode_write_reg(psmouse, value); 1657 } 1658 1659 static int alps_rpt_cmd(struct psmouse *psmouse, int init_command, 1660 int repeated_command, unsigned char *param) 1661 { 1662 struct ps2dev *ps2dev = &psmouse->ps2dev; 1663 1664 param[0] = 0; 1665 if (init_command && ps2_command(ps2dev, param, init_command)) 1666 return -EIO; 1667 1668 if (ps2_command(ps2dev, NULL, repeated_command) || 1669 ps2_command(ps2dev, NULL, repeated_command) || 1670 ps2_command(ps2dev, NULL, repeated_command)) 1671 return -EIO; 1672 1673 param[0] = param[1] = param[2] = 0xff; 1674 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1675 return -EIO; 1676 1677 psmouse_dbg(psmouse, "%2.2X report: %3ph\n", 1678 repeated_command, param); 1679 return 0; 1680 } 1681 1682 static bool alps_check_valid_firmware_id(unsigned char id[]) 1683 { 1684 if (id[0] == 0x73) 1685 return true; 1686 1687 if (id[0] == 0x88 && 1688 (id[1] == 0x07 || 1689 id[1] == 0x08 || 1690 (id[1] & 0xf0) == 0xb0 || 1691 (id[1] & 0xf0) == 0xc0)) { 1692 return true; 1693 } 1694 1695 return false; 1696 } 1697 1698 static int alps_enter_command_mode(struct psmouse *psmouse) 1699 { 1700 unsigned char param[4]; 1701 1702 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) { 1703 psmouse_err(psmouse, "failed to enter command mode\n"); 1704 return -1; 1705 } 1706 1707 if (!alps_check_valid_firmware_id(param)) { 1708 psmouse_dbg(psmouse, 1709 "unknown response while entering command mode\n"); 1710 return -1; 1711 } 1712 return 0; 1713 } 1714 1715 static inline int alps_exit_command_mode(struct psmouse *psmouse) 1716 { 1717 struct ps2dev *ps2dev = &psmouse->ps2dev; 1718 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) 1719 return -1; 1720 return 0; 1721 } 1722 1723 /* 1724 * For DualPoint devices select the device that should respond to 1725 * subsequent commands. It looks like glidepad is behind stickpointer, 1726 * I'd thought it would be other way around... 1727 */ 1728 static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable) 1729 { 1730 struct ps2dev *ps2dev = &psmouse->ps2dev; 1731 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11; 1732 1733 if (ps2_command(ps2dev, NULL, cmd) || 1734 ps2_command(ps2dev, NULL, cmd) || 1735 ps2_command(ps2dev, NULL, cmd) || 1736 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1737 return -1; 1738 1739 /* we may get 3 more bytes, just ignore them */ 1740 ps2_drain(ps2dev, 3, 100); 1741 1742 return 0; 1743 } 1744 1745 static int alps_absolute_mode_v1_v2(struct psmouse *psmouse) 1746 { 1747 struct ps2dev *ps2dev = &psmouse->ps2dev; 1748 1749 /* Try ALPS magic knock - 4 disable before enable */ 1750 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1751 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1752 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1753 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1754 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) 1755 return -1; 1756 1757 /* 1758 * Switch mouse to poll (remote) mode so motion data will not 1759 * get in our way 1760 */ 1761 return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL); 1762 } 1763 1764 static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word) 1765 { 1766 int i, nibble; 1767 1768 /* 1769 * b0-b11 are valid bits, send sequence is inverse. 1770 * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1 1771 */ 1772 for (i = 0; i <= 8; i += 4) { 1773 nibble = (word >> i) & 0xf; 1774 if (alps_command_mode_send_nibble(psmouse, nibble)) 1775 return -1; 1776 } 1777 1778 return 0; 1779 } 1780 1781 static int alps_monitor_mode_write_reg(struct psmouse *psmouse, 1782 u16 addr, u16 value) 1783 { 1784 struct ps2dev *ps2dev = &psmouse->ps2dev; 1785 1786 /* 0x0A0 is the command to write the word */ 1787 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) || 1788 alps_monitor_mode_send_word(psmouse, 0x0A0) || 1789 alps_monitor_mode_send_word(psmouse, addr) || 1790 alps_monitor_mode_send_word(psmouse, value) || 1791 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1792 return -1; 1793 1794 return 0; 1795 } 1796 1797 static int alps_monitor_mode(struct psmouse *psmouse, bool enable) 1798 { 1799 struct ps2dev *ps2dev = &psmouse->ps2dev; 1800 1801 if (enable) { 1802 /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */ 1803 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 1804 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) || 1805 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1806 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1807 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1808 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1809 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1810 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO)) 1811 return -1; 1812 } else { 1813 /* EC to exit monitor mode */ 1814 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP)) 1815 return -1; 1816 } 1817 1818 return 0; 1819 } 1820 1821 static int alps_absolute_mode_v6(struct psmouse *psmouse) 1822 { 1823 u16 reg_val = 0x181; 1824 int ret = -1; 1825 1826 /* enter monitor mode, to write the register */ 1827 if (alps_monitor_mode(psmouse, true)) 1828 return -1; 1829 1830 ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val); 1831 1832 if (alps_monitor_mode(psmouse, false)) 1833 ret = -1; 1834 1835 return ret; 1836 } 1837 1838 static int alps_get_status(struct psmouse *psmouse, char *param) 1839 { 1840 /* Get status: 0xF5 0xF5 0xF5 0xE9 */ 1841 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param)) 1842 return -1; 1843 1844 return 0; 1845 } 1846 1847 /* 1848 * Turn touchpad tapping on or off. The sequences are: 1849 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable, 1850 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable. 1851 * My guess that 0xE9 (GetInfo) is here as a sync point. 1852 * For models that also have stickpointer (DualPoints) its tapping 1853 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but 1854 * we don't fiddle with it. 1855 */ 1856 static int alps_tap_mode(struct psmouse *psmouse, int enable) 1857 { 1858 struct ps2dev *ps2dev = &psmouse->ps2dev; 1859 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES; 1860 unsigned char tap_arg = enable ? 0x0A : 0x00; 1861 unsigned char param[4]; 1862 1863 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) || 1864 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1865 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1866 ps2_command(ps2dev, &tap_arg, cmd)) 1867 return -1; 1868 1869 if (alps_get_status(psmouse, param)) 1870 return -1; 1871 1872 return 0; 1873 } 1874 1875 /* 1876 * alps_poll() - poll the touchpad for current motion packet. 1877 * Used in resync. 1878 */ 1879 static int alps_poll(struct psmouse *psmouse) 1880 { 1881 struct alps_data *priv = psmouse->private; 1882 unsigned char buf[sizeof(psmouse->packet)]; 1883 bool poll_failed; 1884 1885 if (priv->flags & ALPS_PASS) 1886 alps_passthrough_mode_v2(psmouse, true); 1887 1888 poll_failed = ps2_command(&psmouse->ps2dev, buf, 1889 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0; 1890 1891 if (priv->flags & ALPS_PASS) 1892 alps_passthrough_mode_v2(psmouse, false); 1893 1894 if (poll_failed || (buf[0] & priv->mask0) != priv->byte0) 1895 return -1; 1896 1897 if ((psmouse->badbyte & 0xc8) == 0x08) { 1898 /* 1899 * Poll the track stick ... 1900 */ 1901 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8))) 1902 return -1; 1903 } 1904 1905 memcpy(psmouse->packet, buf, sizeof(buf)); 1906 return 0; 1907 } 1908 1909 static int alps_hw_init_v1_v2(struct psmouse *psmouse) 1910 { 1911 struct alps_data *priv = psmouse->private; 1912 1913 if ((priv->flags & ALPS_PASS) && 1914 alps_passthrough_mode_v2(psmouse, true)) { 1915 return -1; 1916 } 1917 1918 if (alps_tap_mode(psmouse, true)) { 1919 psmouse_warn(psmouse, "Failed to enable hardware tapping\n"); 1920 return -1; 1921 } 1922 1923 if (alps_absolute_mode_v1_v2(psmouse)) { 1924 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 1925 return -1; 1926 } 1927 1928 if ((priv->flags & ALPS_PASS) && 1929 alps_passthrough_mode_v2(psmouse, false)) { 1930 return -1; 1931 } 1932 1933 /* ALPS needs stream mode, otherwise it won't report any data */ 1934 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) { 1935 psmouse_err(psmouse, "Failed to enable stream mode\n"); 1936 return -1; 1937 } 1938 1939 return 0; 1940 } 1941 1942 static int alps_hw_init_v6(struct psmouse *psmouse) 1943 { 1944 unsigned char param[2] = {0xC8, 0x14}; 1945 1946 /* Enter passthrough mode to let trackpoint enter 6byte raw mode */ 1947 if (alps_passthrough_mode_v2(psmouse, true)) 1948 return -1; 1949 1950 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1951 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1952 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1953 ps2_command(&psmouse->ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 1954 ps2_command(&psmouse->ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 1955 return -1; 1956 1957 if (alps_passthrough_mode_v2(psmouse, false)) 1958 return -1; 1959 1960 if (alps_absolute_mode_v6(psmouse)) { 1961 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 1962 return -1; 1963 } 1964 1965 return 0; 1966 } 1967 1968 /* 1969 * Enable or disable passthrough mode to the trackstick. 1970 */ 1971 static int alps_passthrough_mode_v3(struct psmouse *psmouse, 1972 int reg_base, bool enable) 1973 { 1974 int reg_val, ret = -1; 1975 1976 if (alps_enter_command_mode(psmouse)) 1977 return -1; 1978 1979 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008); 1980 if (reg_val == -1) 1981 goto error; 1982 1983 if (enable) 1984 reg_val |= 0x01; 1985 else 1986 reg_val &= ~0x01; 1987 1988 ret = __alps_command_mode_write_reg(psmouse, reg_val); 1989 1990 error: 1991 if (alps_exit_command_mode(psmouse)) 1992 ret = -1; 1993 return ret; 1994 } 1995 1996 /* Must be in command mode when calling this function */ 1997 static int alps_absolute_mode_v3(struct psmouse *psmouse) 1998 { 1999 int reg_val; 2000 2001 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 2002 if (reg_val == -1) 2003 return -1; 2004 2005 reg_val |= 0x06; 2006 if (__alps_command_mode_write_reg(psmouse, reg_val)) 2007 return -1; 2008 2009 return 0; 2010 } 2011 2012 static int alps_probe_trackstick_v3(struct psmouse *psmouse, int reg_base) 2013 { 2014 int ret = -EIO, reg_val; 2015 2016 if (alps_enter_command_mode(psmouse)) 2017 goto error; 2018 2019 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08); 2020 if (reg_val == -1) 2021 goto error; 2022 2023 /* bit 7: trackstick is present */ 2024 ret = reg_val & 0x80 ? 0 : -ENODEV; 2025 2026 error: 2027 alps_exit_command_mode(psmouse); 2028 return ret; 2029 } 2030 2031 static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base) 2032 { 2033 struct ps2dev *ps2dev = &psmouse->ps2dev; 2034 int ret = 0; 2035 unsigned char param[4]; 2036 2037 if (alps_passthrough_mode_v3(psmouse, reg_base, true)) 2038 return -EIO; 2039 2040 /* 2041 * E7 report for the trackstick 2042 * 2043 * There have been reports of failures to seem to trace back 2044 * to the above trackstick check failing. When these occur 2045 * this E7 report fails, so when that happens we continue 2046 * with the assumption that there isn't a trackstick after 2047 * all. 2048 */ 2049 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) { 2050 psmouse_warn(psmouse, "Failed to initialize trackstick (E7 report failed)\n"); 2051 ret = -ENODEV; 2052 } else { 2053 psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param); 2054 2055 /* 2056 * Not sure what this does, but it is absolutely 2057 * essential. Without it, the touchpad does not 2058 * work at all and the trackstick just emits normal 2059 * PS/2 packets. 2060 */ 2061 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2062 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2063 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2064 alps_command_mode_send_nibble(psmouse, 0x9) || 2065 alps_command_mode_send_nibble(psmouse, 0x4)) { 2066 psmouse_err(psmouse, 2067 "Error sending magic E6 sequence\n"); 2068 ret = -EIO; 2069 goto error; 2070 } 2071 2072 /* 2073 * This ensures the trackstick packets are in the format 2074 * supported by this driver. If bit 1 isn't set the packet 2075 * format is different. 2076 */ 2077 if (alps_enter_command_mode(psmouse) || 2078 alps_command_mode_write_reg(psmouse, 2079 reg_base + 0x08, 0x82) || 2080 alps_exit_command_mode(psmouse)) 2081 ret = -EIO; 2082 } 2083 2084 error: 2085 if (alps_passthrough_mode_v3(psmouse, reg_base, false)) 2086 ret = -EIO; 2087 2088 return ret; 2089 } 2090 2091 static int alps_hw_init_v3(struct psmouse *psmouse) 2092 { 2093 struct ps2dev *ps2dev = &psmouse->ps2dev; 2094 int reg_val; 2095 unsigned char param[4]; 2096 2097 reg_val = alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE); 2098 if (reg_val == -EIO) 2099 goto error; 2100 2101 if (reg_val == 0 && 2102 alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO) 2103 goto error; 2104 2105 if (alps_enter_command_mode(psmouse) || 2106 alps_absolute_mode_v3(psmouse)) { 2107 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 2108 goto error; 2109 } 2110 2111 reg_val = alps_command_mode_read_reg(psmouse, 0x0006); 2112 if (reg_val == -1) 2113 goto error; 2114 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 2115 goto error; 2116 2117 reg_val = alps_command_mode_read_reg(psmouse, 0x0007); 2118 if (reg_val == -1) 2119 goto error; 2120 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 2121 goto error; 2122 2123 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1) 2124 goto error; 2125 if (__alps_command_mode_write_reg(psmouse, 0x04)) 2126 goto error; 2127 2128 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1) 2129 goto error; 2130 if (__alps_command_mode_write_reg(psmouse, 0x03)) 2131 goto error; 2132 2133 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1) 2134 goto error; 2135 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03)) 2136 goto error; 2137 2138 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1) 2139 goto error; 2140 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04)) 2141 goto error; 2142 2143 alps_exit_command_mode(psmouse); 2144 2145 /* Set rate and enable data reporting */ 2146 param[0] = 0x64; 2147 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 2148 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 2149 psmouse_err(psmouse, "Failed to enable data reporting\n"); 2150 return -1; 2151 } 2152 2153 return 0; 2154 2155 error: 2156 /* 2157 * Leaving the touchpad in command mode will essentially render 2158 * it unusable until the machine reboots, so exit it here just 2159 * to be safe 2160 */ 2161 alps_exit_command_mode(psmouse); 2162 return -1; 2163 } 2164 2165 static int alps_get_v3_v7_resolution(struct psmouse *psmouse, int reg_pitch) 2166 { 2167 int reg, x_pitch, y_pitch, x_electrode, y_electrode, x_phys, y_phys; 2168 struct alps_data *priv = psmouse->private; 2169 2170 reg = alps_command_mode_read_reg(psmouse, reg_pitch); 2171 if (reg < 0) 2172 return reg; 2173 2174 x_pitch = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ 2175 x_pitch = 50 + 2 * x_pitch; /* In 0.1 mm units */ 2176 2177 y_pitch = (char)reg >> 4; /* sign extend upper 4 bits */ 2178 y_pitch = 36 + 2 * y_pitch; /* In 0.1 mm units */ 2179 2180 reg = alps_command_mode_read_reg(psmouse, reg_pitch + 1); 2181 if (reg < 0) 2182 return reg; 2183 2184 x_electrode = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ 2185 x_electrode = 17 + x_electrode; 2186 2187 y_electrode = (char)reg >> 4; /* sign extend upper 4 bits */ 2188 y_electrode = 13 + y_electrode; 2189 2190 x_phys = x_pitch * (x_electrode - 1); /* In 0.1 mm units */ 2191 y_phys = y_pitch * (y_electrode - 1); /* In 0.1 mm units */ 2192 2193 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ 2194 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ 2195 2196 psmouse_dbg(psmouse, 2197 "pitch %dx%d num-electrodes %dx%d physical size %dx%d mm res %dx%d\n", 2198 x_pitch, y_pitch, x_electrode, y_electrode, 2199 x_phys / 10, y_phys / 10, priv->x_res, priv->y_res); 2200 2201 return 0; 2202 } 2203 2204 static int alps_hw_init_rushmore_v3(struct psmouse *psmouse) 2205 { 2206 struct alps_data *priv = psmouse->private; 2207 struct ps2dev *ps2dev = &psmouse->ps2dev; 2208 int reg_val, ret = -1; 2209 2210 if (priv->flags & ALPS_DUALPOINT) { 2211 reg_val = alps_setup_trackstick_v3(psmouse, 2212 ALPS_REG_BASE_RUSHMORE); 2213 if (reg_val == -EIO) 2214 goto error; 2215 } 2216 2217 if (alps_enter_command_mode(psmouse) || 2218 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 || 2219 alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00)) 2220 goto error; 2221 2222 if (alps_get_v3_v7_resolution(psmouse, 0xc2da)) 2223 goto error; 2224 2225 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6); 2226 if (reg_val == -1) 2227 goto error; 2228 if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd)) 2229 goto error; 2230 2231 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 2232 goto error; 2233 2234 /* enter absolute mode */ 2235 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 2236 if (reg_val == -1) 2237 goto error; 2238 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 2239 goto error; 2240 2241 alps_exit_command_mode(psmouse); 2242 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2243 2244 error: 2245 alps_exit_command_mode(psmouse); 2246 return ret; 2247 } 2248 2249 /* Must be in command mode when calling this function */ 2250 static int alps_absolute_mode_v4(struct psmouse *psmouse) 2251 { 2252 int reg_val; 2253 2254 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 2255 if (reg_val == -1) 2256 return -1; 2257 2258 reg_val |= 0x02; 2259 if (__alps_command_mode_write_reg(psmouse, reg_val)) 2260 return -1; 2261 2262 return 0; 2263 } 2264 2265 static int alps_hw_init_v4(struct psmouse *psmouse) 2266 { 2267 struct ps2dev *ps2dev = &psmouse->ps2dev; 2268 unsigned char param[4]; 2269 2270 if (alps_enter_command_mode(psmouse)) 2271 goto error; 2272 2273 if (alps_absolute_mode_v4(psmouse)) { 2274 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 2275 goto error; 2276 } 2277 2278 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c)) 2279 goto error; 2280 2281 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03)) 2282 goto error; 2283 2284 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03)) 2285 goto error; 2286 2287 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15)) 2288 goto error; 2289 2290 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01)) 2291 goto error; 2292 2293 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03)) 2294 goto error; 2295 2296 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03)) 2297 goto error; 2298 2299 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03)) 2300 goto error; 2301 2302 alps_exit_command_mode(psmouse); 2303 2304 /* 2305 * This sequence changes the output from a 9-byte to an 2306 * 8-byte format. All the same data seems to be present, 2307 * just in a more compact format. 2308 */ 2309 param[0] = 0xc8; 2310 param[1] = 0x64; 2311 param[2] = 0x50; 2312 if (ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2313 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE) || 2314 ps2_command(ps2dev, ¶m[2], PSMOUSE_CMD_SETRATE) || 2315 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) 2316 return -1; 2317 2318 /* Set rate and enable data reporting */ 2319 param[0] = 0x64; 2320 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 2321 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 2322 psmouse_err(psmouse, "Failed to enable data reporting\n"); 2323 return -1; 2324 } 2325 2326 return 0; 2327 2328 error: 2329 /* 2330 * Leaving the touchpad in command mode will essentially render 2331 * it unusable until the machine reboots, so exit it here just 2332 * to be safe 2333 */ 2334 alps_exit_command_mode(psmouse); 2335 return -1; 2336 } 2337 2338 static int alps_get_otp_values_ss4_v2(struct psmouse *psmouse, 2339 unsigned char index, unsigned char otp[]) 2340 { 2341 struct ps2dev *ps2dev = &psmouse->ps2dev; 2342 2343 switch (index) { 2344 case 0: 2345 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2346 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2347 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) 2348 return -1; 2349 2350 break; 2351 2352 case 1: 2353 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2354 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2355 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) 2356 return -1; 2357 2358 break; 2359 } 2360 2361 return 0; 2362 } 2363 2364 static int alps_update_device_area_ss4_v2(unsigned char otp[][4], 2365 struct alps_data *priv) 2366 { 2367 int num_x_electrode; 2368 int num_y_electrode; 2369 int x_pitch, y_pitch, x_phys, y_phys; 2370 2371 num_x_electrode = SS4_NUMSENSOR_XOFFSET + (otp[1][0] & 0x0F); 2372 num_y_electrode = SS4_NUMSENSOR_YOFFSET + ((otp[1][0] >> 4) & 0x0F); 2373 2374 priv->x_max = (num_x_electrode - 1) * SS4_COUNT_PER_ELECTRODE; 2375 priv->y_max = (num_y_electrode - 1) * SS4_COUNT_PER_ELECTRODE; 2376 2377 x_pitch = ((otp[1][2] >> 2) & 0x07) + SS4_MIN_PITCH_MM; 2378 y_pitch = ((otp[1][2] >> 5) & 0x07) + SS4_MIN_PITCH_MM; 2379 2380 x_phys = x_pitch * (num_x_electrode - 1); /* In 0.1 mm units */ 2381 y_phys = y_pitch * (num_y_electrode - 1); /* In 0.1 mm units */ 2382 2383 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ 2384 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ 2385 2386 return 0; 2387 } 2388 2389 static int alps_update_btn_info_ss4_v2(unsigned char otp[][4], 2390 struct alps_data *priv) 2391 { 2392 unsigned char is_btnless; 2393 2394 is_btnless = (otp[1][1] >> 3) & 0x01; 2395 2396 if (is_btnless) 2397 priv->flags |= ALPS_BUTTONPAD; 2398 2399 return 0; 2400 } 2401 2402 static int alps_set_defaults_ss4_v2(struct psmouse *psmouse, 2403 struct alps_data *priv) 2404 { 2405 unsigned char otp[2][4]; 2406 2407 memset(otp, 0, sizeof(otp)); 2408 2409 if (alps_get_otp_values_ss4_v2(psmouse, 0, &otp[0][0]) || 2410 alps_get_otp_values_ss4_v2(psmouse, 1, &otp[1][0])) 2411 return -1; 2412 2413 alps_update_device_area_ss4_v2(otp, priv); 2414 2415 alps_update_btn_info_ss4_v2(otp, priv); 2416 2417 return 0; 2418 } 2419 2420 static int alps_dolphin_get_device_area(struct psmouse *psmouse, 2421 struct alps_data *priv) 2422 { 2423 struct ps2dev *ps2dev = &psmouse->ps2dev; 2424 unsigned char param[4] = {0}; 2425 int num_x_electrode, num_y_electrode; 2426 2427 if (alps_enter_command_mode(psmouse)) 2428 return -1; 2429 2430 param[0] = 0x0a; 2431 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 2432 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2433 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2434 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2435 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE)) 2436 return -1; 2437 2438 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 2439 return -1; 2440 2441 /* 2442 * Dolphin's sensor line number is not fixed. It can be calculated 2443 * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET. 2444 * Further more, we can get device's x_max and y_max by multiplying 2445 * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE. 2446 * 2447 * e.g. When we get register's sensor_x = 11 & sensor_y = 8, 2448 * real sensor line number X = 11 + 8 = 19, and 2449 * real sensor line number Y = 8 + 1 = 9. 2450 * So, x_max = (19 - 1) * 64 = 1152, and 2451 * y_max = (9 - 1) * 64 = 512. 2452 */ 2453 num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F); 2454 num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F); 2455 priv->x_bits = num_x_electrode; 2456 priv->y_bits = num_y_electrode; 2457 priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2458 priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2459 2460 if (alps_exit_command_mode(psmouse)) 2461 return -1; 2462 2463 return 0; 2464 } 2465 2466 static int alps_hw_init_dolphin_v1(struct psmouse *psmouse) 2467 { 2468 struct ps2dev *ps2dev = &psmouse->ps2dev; 2469 unsigned char param[2]; 2470 2471 /* This is dolphin "v1" as empirically defined by florin9doi */ 2472 param[0] = 0x64; 2473 param[1] = 0x28; 2474 2475 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2476 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2477 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 2478 return -1; 2479 2480 return 0; 2481 } 2482 2483 static int alps_hw_init_v7(struct psmouse *psmouse) 2484 { 2485 struct ps2dev *ps2dev = &psmouse->ps2dev; 2486 int reg_val, ret = -1; 2487 2488 if (alps_enter_command_mode(psmouse) || 2489 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1) 2490 goto error; 2491 2492 if (alps_get_v3_v7_resolution(psmouse, 0xc397)) 2493 goto error; 2494 2495 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 2496 goto error; 2497 2498 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 2499 if (reg_val == -1) 2500 goto error; 2501 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 2502 goto error; 2503 2504 alps_exit_command_mode(psmouse); 2505 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2506 2507 error: 2508 alps_exit_command_mode(psmouse); 2509 return ret; 2510 } 2511 2512 static int alps_hw_init_ss4_v2(struct psmouse *psmouse) 2513 { 2514 struct ps2dev *ps2dev = &psmouse->ps2dev; 2515 char param[2] = {0x64, 0x28}; 2516 int ret = -1; 2517 2518 /* enter absolute mode */ 2519 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2520 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2521 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2522 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) { 2523 goto error; 2524 } 2525 2526 /* T.B.D. Decread noise packet number, delete in the future */ 2527 if (alps_exit_command_mode(psmouse) || 2528 alps_enter_command_mode(psmouse) || 2529 alps_command_mode_write_reg(psmouse, 0x001D, 0x20)) { 2530 goto error; 2531 } 2532 alps_exit_command_mode(psmouse); 2533 2534 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2535 2536 error: 2537 alps_exit_command_mode(psmouse); 2538 return ret; 2539 } 2540 2541 static int alps_set_protocol(struct psmouse *psmouse, 2542 struct alps_data *priv, 2543 const struct alps_protocol_info *protocol) 2544 { 2545 psmouse->private = priv; 2546 2547 setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse); 2548 2549 priv->proto_version = protocol->version; 2550 priv->byte0 = protocol->byte0; 2551 priv->mask0 = protocol->mask0; 2552 priv->flags = protocol->flags; 2553 2554 priv->x_max = 2000; 2555 priv->y_max = 1400; 2556 priv->x_bits = 15; 2557 priv->y_bits = 11; 2558 2559 switch (priv->proto_version) { 2560 case ALPS_PROTO_V1: 2561 case ALPS_PROTO_V2: 2562 priv->hw_init = alps_hw_init_v1_v2; 2563 priv->process_packet = alps_process_packet_v1_v2; 2564 priv->set_abs_params = alps_set_abs_params_st; 2565 priv->x_max = 1023; 2566 priv->y_max = 767; 2567 break; 2568 2569 case ALPS_PROTO_V3: 2570 priv->hw_init = alps_hw_init_v3; 2571 priv->process_packet = alps_process_packet_v3; 2572 priv->set_abs_params = alps_set_abs_params_semi_mt; 2573 priv->decode_fields = alps_decode_pinnacle; 2574 priv->nibble_commands = alps_v3_nibble_commands; 2575 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2576 break; 2577 2578 case ALPS_PROTO_V3_RUSHMORE: 2579 priv->hw_init = alps_hw_init_rushmore_v3; 2580 priv->process_packet = alps_process_packet_v3; 2581 priv->set_abs_params = alps_set_abs_params_semi_mt; 2582 priv->decode_fields = alps_decode_rushmore; 2583 priv->nibble_commands = alps_v3_nibble_commands; 2584 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2585 priv->x_bits = 16; 2586 priv->y_bits = 12; 2587 2588 if (alps_probe_trackstick_v3(psmouse, 2589 ALPS_REG_BASE_RUSHMORE) < 0) 2590 priv->flags &= ~ALPS_DUALPOINT; 2591 2592 break; 2593 2594 case ALPS_PROTO_V4: 2595 priv->hw_init = alps_hw_init_v4; 2596 priv->process_packet = alps_process_packet_v4; 2597 priv->set_abs_params = alps_set_abs_params_semi_mt; 2598 priv->nibble_commands = alps_v4_nibble_commands; 2599 priv->addr_command = PSMOUSE_CMD_DISABLE; 2600 break; 2601 2602 case ALPS_PROTO_V5: 2603 priv->hw_init = alps_hw_init_dolphin_v1; 2604 priv->process_packet = alps_process_touchpad_packet_v3_v5; 2605 priv->decode_fields = alps_decode_dolphin; 2606 priv->set_abs_params = alps_set_abs_params_semi_mt; 2607 priv->nibble_commands = alps_v3_nibble_commands; 2608 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2609 priv->x_bits = 23; 2610 priv->y_bits = 12; 2611 2612 if (alps_dolphin_get_device_area(psmouse, priv)) 2613 return -EIO; 2614 2615 break; 2616 2617 case ALPS_PROTO_V6: 2618 priv->hw_init = alps_hw_init_v6; 2619 priv->process_packet = alps_process_packet_v6; 2620 priv->set_abs_params = alps_set_abs_params_st; 2621 priv->nibble_commands = alps_v6_nibble_commands; 2622 priv->x_max = 2047; 2623 priv->y_max = 1535; 2624 break; 2625 2626 case ALPS_PROTO_V7: 2627 priv->hw_init = alps_hw_init_v7; 2628 priv->process_packet = alps_process_packet_v7; 2629 priv->decode_fields = alps_decode_packet_v7; 2630 priv->set_abs_params = alps_set_abs_params_v7; 2631 priv->nibble_commands = alps_v3_nibble_commands; 2632 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2633 priv->x_max = 0xfff; 2634 priv->y_max = 0x7ff; 2635 2636 if (priv->fw_ver[1] != 0xba) 2637 priv->flags |= ALPS_BUTTONPAD; 2638 2639 break; 2640 2641 case ALPS_PROTO_V8: 2642 priv->hw_init = alps_hw_init_ss4_v2; 2643 priv->process_packet = alps_process_packet_ss4_v2; 2644 priv->decode_fields = alps_decode_ss4_v2; 2645 priv->set_abs_params = alps_set_abs_params_ss4_v2; 2646 priv->nibble_commands = alps_v3_nibble_commands; 2647 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2648 2649 if (alps_set_defaults_ss4_v2(psmouse, priv)) 2650 return -EIO; 2651 2652 break; 2653 } 2654 2655 return 0; 2656 } 2657 2658 static const struct alps_protocol_info *alps_match_table(unsigned char *e7, 2659 unsigned char *ec) 2660 { 2661 const struct alps_model_info *model; 2662 int i; 2663 2664 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) { 2665 model = &alps_model_data[i]; 2666 2667 if (!memcmp(e7, model->signature, sizeof(model->signature)) && 2668 (!model->command_mode_resp || 2669 model->command_mode_resp == ec[2])) { 2670 2671 return &model->protocol_info; 2672 } 2673 } 2674 2675 return NULL; 2676 } 2677 2678 static int alps_identify(struct psmouse *psmouse, struct alps_data *priv) 2679 { 2680 const struct alps_protocol_info *protocol; 2681 unsigned char e6[4], e7[4], ec[4]; 2682 int error; 2683 2684 /* 2685 * First try "E6 report". 2686 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed. 2687 * The bits 0-2 of the first byte will be 1s if some buttons are 2688 * pressed. 2689 */ 2690 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2691 PSMOUSE_CMD_SETSCALE11, e6)) 2692 return -EIO; 2693 2694 if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100)) 2695 return -EINVAL; 2696 2697 /* 2698 * Now get the "E7" and "EC" reports. These will uniquely identify 2699 * most ALPS touchpads. 2700 */ 2701 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2702 PSMOUSE_CMD_SETSCALE21, e7) || 2703 alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2704 PSMOUSE_CMD_RESET_WRAP, ec) || 2705 alps_exit_command_mode(psmouse)) 2706 return -EIO; 2707 2708 protocol = alps_match_table(e7, ec); 2709 if (!protocol) { 2710 if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 && 2711 ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) { 2712 protocol = &alps_v5_protocol_data; 2713 } else if (ec[0] == 0x88 && 2714 ((ec[1] & 0xf0) == 0xb0 || (ec[1] & 0xf0) == 0xc0)) { 2715 protocol = &alps_v7_protocol_data; 2716 } else if (ec[0] == 0x88 && ec[1] == 0x08) { 2717 protocol = &alps_v3_rushmore_data; 2718 } else if (ec[0] == 0x88 && ec[1] == 0x07 && 2719 ec[2] >= 0x90 && ec[2] <= 0x9d) { 2720 protocol = &alps_v3_protocol_data; 2721 } else if (e7[0] == 0x73 && e7[1] == 0x03 && 2722 e7[2] == 0x14 && ec[1] == 0x02) { 2723 protocol = &alps_v8_protocol_data; 2724 } else { 2725 psmouse_dbg(psmouse, 2726 "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec); 2727 return -EINVAL; 2728 } 2729 } 2730 2731 if (priv) { 2732 /* Save the Firmware version */ 2733 memcpy(priv->fw_ver, ec, 3); 2734 error = alps_set_protocol(psmouse, priv, protocol); 2735 if (error) 2736 return error; 2737 } 2738 2739 return 0; 2740 } 2741 2742 static int alps_reconnect(struct psmouse *psmouse) 2743 { 2744 struct alps_data *priv = psmouse->private; 2745 2746 psmouse_reset(psmouse); 2747 2748 if (alps_identify(psmouse, priv) < 0) 2749 return -1; 2750 2751 return priv->hw_init(psmouse); 2752 } 2753 2754 static void alps_disconnect(struct psmouse *psmouse) 2755 { 2756 struct alps_data *priv = psmouse->private; 2757 2758 psmouse_reset(psmouse); 2759 del_timer_sync(&priv->timer); 2760 if (priv->dev2) 2761 input_unregister_device(priv->dev2); 2762 if (!IS_ERR_OR_NULL(priv->dev3)) 2763 input_unregister_device(priv->dev3); 2764 kfree(priv); 2765 } 2766 2767 static void alps_set_abs_params_st(struct alps_data *priv, 2768 struct input_dev *dev1) 2769 { 2770 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0); 2771 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0); 2772 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2773 } 2774 2775 static void alps_set_abs_params_mt_common(struct alps_data *priv, 2776 struct input_dev *dev1) 2777 { 2778 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0); 2779 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0); 2780 2781 input_abs_set_res(dev1, ABS_MT_POSITION_X, priv->x_res); 2782 input_abs_set_res(dev1, ABS_MT_POSITION_Y, priv->y_res); 2783 2784 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit); 2785 set_bit(BTN_TOOL_QUADTAP, dev1->keybit); 2786 } 2787 2788 static void alps_set_abs_params_semi_mt(struct alps_data *priv, 2789 struct input_dev *dev1) 2790 { 2791 alps_set_abs_params_mt_common(priv, dev1); 2792 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2793 2794 input_mt_init_slots(dev1, MAX_TOUCHES, 2795 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 2796 INPUT_MT_SEMI_MT); 2797 } 2798 2799 static void alps_set_abs_params_v7(struct alps_data *priv, 2800 struct input_dev *dev1) 2801 { 2802 alps_set_abs_params_mt_common(priv, dev1); 2803 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2804 2805 input_mt_init_slots(dev1, MAX_TOUCHES, 2806 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 2807 INPUT_MT_TRACK); 2808 2809 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2810 } 2811 2812 static void alps_set_abs_params_ss4_v2(struct alps_data *priv, 2813 struct input_dev *dev1) 2814 { 2815 alps_set_abs_params_mt_common(priv, dev1); 2816 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2817 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2818 2819 input_mt_init_slots(dev1, MAX_TOUCHES, 2820 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 2821 INPUT_MT_TRACK); 2822 } 2823 2824 int alps_init(struct psmouse *psmouse) 2825 { 2826 struct alps_data *priv = psmouse->private; 2827 struct input_dev *dev1 = psmouse->dev; 2828 int error; 2829 2830 error = priv->hw_init(psmouse); 2831 if (error) 2832 goto init_fail; 2833 2834 /* 2835 * Undo part of setup done for us by psmouse core since touchpad 2836 * is not a relative device. 2837 */ 2838 __clear_bit(EV_REL, dev1->evbit); 2839 __clear_bit(REL_X, dev1->relbit); 2840 __clear_bit(REL_Y, dev1->relbit); 2841 2842 /* 2843 * Now set up our capabilities. 2844 */ 2845 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY); 2846 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH); 2847 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER); 2848 dev1->keybit[BIT_WORD(BTN_LEFT)] |= 2849 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); 2850 2851 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS); 2852 2853 priv->set_abs_params(priv, dev1); 2854 2855 if (priv->flags & ALPS_WHEEL) { 2856 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL); 2857 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL); 2858 } 2859 2860 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 2861 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD); 2862 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK); 2863 } 2864 2865 if (priv->flags & ALPS_FOUR_BUTTONS) { 2866 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0); 2867 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1); 2868 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2); 2869 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3); 2870 } else if (priv->flags & ALPS_BUTTONPAD) { 2871 set_bit(INPUT_PROP_BUTTONPAD, dev1->propbit); 2872 clear_bit(BTN_RIGHT, dev1->keybit); 2873 } else { 2874 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE); 2875 } 2876 2877 if (priv->flags & ALPS_DUALPOINT) { 2878 struct input_dev *dev2; 2879 2880 dev2 = input_allocate_device(); 2881 if (!dev2) { 2882 psmouse_err(psmouse, 2883 "failed to allocate trackstick device\n"); 2884 error = -ENOMEM; 2885 goto init_fail; 2886 } 2887 2888 snprintf(priv->phys2, sizeof(priv->phys2), "%s/input1", 2889 psmouse->ps2dev.serio->phys); 2890 dev2->phys = priv->phys2; 2891 2892 /* 2893 * format of input device name is: "protocol vendor name" 2894 * see function psmouse_switch_protocol() in psmouse-base.c 2895 */ 2896 dev2->name = "AlpsPS/2 ALPS DualPoint Stick"; 2897 2898 dev2->id.bustype = BUS_I8042; 2899 dev2->id.vendor = 0x0002; 2900 dev2->id.product = PSMOUSE_ALPS; 2901 dev2->id.version = priv->proto_version; 2902 dev2->dev.parent = &psmouse->ps2dev.serio->dev; 2903 2904 input_set_capability(dev2, EV_REL, REL_X); 2905 input_set_capability(dev2, EV_REL, REL_Y); 2906 input_set_capability(dev2, EV_KEY, BTN_LEFT); 2907 input_set_capability(dev2, EV_KEY, BTN_RIGHT); 2908 input_set_capability(dev2, EV_KEY, BTN_MIDDLE); 2909 2910 __set_bit(INPUT_PROP_POINTER, dev2->propbit); 2911 __set_bit(INPUT_PROP_POINTING_STICK, dev2->propbit); 2912 2913 error = input_register_device(dev2); 2914 if (error) { 2915 psmouse_err(psmouse, 2916 "failed to register trackstick device: %d\n", 2917 error); 2918 input_free_device(dev2); 2919 goto init_fail; 2920 } 2921 2922 priv->dev2 = dev2; 2923 } 2924 2925 priv->psmouse = psmouse; 2926 2927 INIT_DELAYED_WORK(&priv->dev3_register_work, 2928 alps_register_bare_ps2_mouse); 2929 2930 psmouse->protocol_handler = alps_process_byte; 2931 psmouse->poll = alps_poll; 2932 psmouse->disconnect = alps_disconnect; 2933 psmouse->reconnect = alps_reconnect; 2934 psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6; 2935 2936 /* We are having trouble resyncing ALPS touchpads so disable it for now */ 2937 psmouse->resync_time = 0; 2938 2939 /* Allow 2 invalid packets without resetting device */ 2940 psmouse->resetafter = psmouse->pktsize * 2; 2941 2942 return 0; 2943 2944 init_fail: 2945 psmouse_reset(psmouse); 2946 /* 2947 * Even though we did not allocate psmouse->private we do free 2948 * it here. 2949 */ 2950 kfree(psmouse->private); 2951 psmouse->private = NULL; 2952 return error; 2953 } 2954 2955 int alps_detect(struct psmouse *psmouse, bool set_properties) 2956 { 2957 struct alps_data *priv; 2958 int error; 2959 2960 error = alps_identify(psmouse, NULL); 2961 if (error) 2962 return error; 2963 2964 /* 2965 * Reset the device to make sure it is fully operational: 2966 * on some laptops, like certain Dell Latitudes, we may 2967 * fail to properly detect presence of trackstick if device 2968 * has not been reset. 2969 */ 2970 psmouse_reset(psmouse); 2971 2972 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL); 2973 if (!priv) 2974 return -ENOMEM; 2975 2976 error = alps_identify(psmouse, priv); 2977 if (error) { 2978 kfree(priv); 2979 return error; 2980 } 2981 2982 if (set_properties) { 2983 psmouse->vendor = "ALPS"; 2984 psmouse->name = priv->flags & ALPS_DUALPOINT ? 2985 "DualPoint TouchPad" : "GlidePoint"; 2986 psmouse->model = priv->proto_version; 2987 } else { 2988 /* 2989 * Destroy alps_data structure we allocated earlier since 2990 * this was just a "trial run". Otherwise we'll keep it 2991 * to be used by alps_init() which has to be called if 2992 * we succeed and set_properties is true. 2993 */ 2994 kfree(priv); 2995 psmouse->private = NULL; 2996 } 2997 2998 return 0; 2999 } 3000 3001