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_V7 0xc2c0 35 #define ALPS_REG_BASE_PINNACLE 0x0000 36 37 static const struct alps_nibble_commands alps_v3_nibble_commands[] = { 38 { PSMOUSE_CMD_SETPOLL, 0x00 }, /* 0 */ 39 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */ 40 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */ 41 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */ 42 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */ 43 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */ 44 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */ 45 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */ 46 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */ 47 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */ 48 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */ 49 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */ 50 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */ 51 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */ 52 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */ 53 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 54 }; 55 56 static const struct alps_nibble_commands alps_v4_nibble_commands[] = { 57 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */ 58 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */ 59 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */ 60 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */ 61 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */ 62 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */ 63 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */ 64 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */ 65 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */ 66 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */ 67 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */ 68 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */ 69 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */ 70 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */ 71 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */ 72 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 73 }; 74 75 static const struct alps_nibble_commands alps_v6_nibble_commands[] = { 76 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */ 77 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 1 */ 78 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 2 */ 79 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 3 */ 80 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 4 */ 81 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 5 */ 82 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 6 */ 83 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 7 */ 84 { PSMOUSE_CMD_GETID, 0x00 }, /* 8 */ 85 { PSMOUSE_CMD_GETINFO, 0x00 }, /* 9 */ 86 { PSMOUSE_CMD_SETRES, 0x00 }, /* a */ 87 { PSMOUSE_CMD_SETRES, 0x01 }, /* b */ 88 { PSMOUSE_CMD_SETRES, 0x02 }, /* c */ 89 { PSMOUSE_CMD_SETRES, 0x03 }, /* d */ 90 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* e */ 91 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 92 }; 93 94 95 #define ALPS_DUALPOINT 0x02 /* touchpad has trackstick */ 96 #define ALPS_PASS 0x04 /* device has a pass-through port */ 97 98 #define ALPS_WHEEL 0x08 /* hardware wheel present */ 99 #define ALPS_FW_BK_1 0x10 /* front & back buttons present */ 100 #define ALPS_FW_BK_2 0x20 /* front & back buttons present */ 101 #define ALPS_FOUR_BUTTONS 0x40 /* 4 direction button present */ 102 #define ALPS_PS2_INTERLEAVED 0x80 /* 3-byte PS/2 packet interleaved with 103 6-byte ALPS packet */ 104 #define ALPS_STICK_BITS 0x100 /* separate stick button bits */ 105 #define ALPS_BUTTONPAD 0x200 /* device is a clickpad */ 106 #define ALPS_DUALPOINT_WITH_PRESSURE 0x400 /* device can report trackpoint pressure */ 107 108 static const struct alps_model_info alps_model_data[] = { 109 /* 110 * XXX This entry is suspicious. First byte has zero lower nibble, 111 * which is what a normal mouse would report. Also, the value 0x0e 112 * isn't valid per PS/2 spec. 113 */ 114 { { 0x20, 0x02, 0x0e }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, 115 116 { { 0x22, 0x02, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, 117 { { 0x22, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D600 */ 118 { { 0x32, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Toshiba Salellite Pro M10 */ 119 { { 0x33, 0x02, 0x0a }, { ALPS_PROTO_V1, 0x88, 0xf8, 0 } }, /* UMAX-530T */ 120 { { 0x52, 0x01, 0x14 }, { ALPS_PROTO_V2, 0xff, 0xff, 121 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, /* Toshiba Tecra A11-11L */ 122 { { 0x53, 0x02, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 123 { { 0x53, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 124 { { 0x60, 0x03, 0xc8 }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, /* HP ze1115 */ 125 { { 0x62, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xcf, 0xcf, 126 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, /* Dell Latitude E5500, E6400, E6500, Precision M4400 */ 127 { { 0x63, 0x02, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 128 { { 0x63, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 129 { { 0x63, 0x02, 0x28 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Fujitsu Siemens S6010 */ 130 { { 0x63, 0x02, 0x3c }, { ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL } }, /* Toshiba Satellite S2400-103 */ 131 { { 0x63, 0x02, 0x50 }, { ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 } }, /* NEC Versa L320 */ 132 { { 0x63, 0x02, 0x64 }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 133 { { 0x63, 0x03, 0xc8 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D800 */ 134 { { 0x73, 0x00, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT } }, /* ThinkPad R61 8918-5QG */ 135 { { 0x73, 0x00, 0x14 }, { ALPS_PROTO_V6, 0xff, 0xff, ALPS_DUALPOINT } }, /* Dell XT2 */ 136 { { 0x73, 0x02, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 137 { { 0x73, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Ahtec Laptop */ 138 { { 0x73, 0x02, 0x50 }, { ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS } }, /* Dell Vostro 1400 */ 139 }; 140 141 static const struct alps_protocol_info alps_v3_protocol_data = { 142 ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT 143 }; 144 145 static const struct alps_protocol_info alps_v3_rushmore_data = { 146 ALPS_PROTO_V3_RUSHMORE, 0x8f, 0x8f, ALPS_DUALPOINT 147 }; 148 149 static const struct alps_protocol_info alps_v4_protocol_data = { 150 ALPS_PROTO_V4, 0x8f, 0x8f, 0 151 }; 152 153 static const struct alps_protocol_info alps_v5_protocol_data = { 154 ALPS_PROTO_V5, 0xc8, 0xd8, 0 155 }; 156 157 static const struct alps_protocol_info alps_v7_protocol_data = { 158 ALPS_PROTO_V7, 0x48, 0x48, ALPS_DUALPOINT 159 }; 160 161 static const struct alps_protocol_info alps_v8_protocol_data = { 162 ALPS_PROTO_V8, 0x18, 0x18, 0 163 }; 164 165 static const struct alps_protocol_info alps_v9_protocol_data = { 166 ALPS_PROTO_V9, 0xc8, 0xc8, 0 167 }; 168 169 /* 170 * Some v2 models report the stick buttons in separate bits 171 */ 172 static const struct dmi_system_id alps_dmi_has_separate_stick_buttons[] = { 173 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 174 { 175 /* Extrapolated from other entries */ 176 .matches = { 177 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 178 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D420"), 179 }, 180 }, 181 { 182 /* Reported-by: Hans de Bruin <jmdebruin@xmsnet.nl> */ 183 .matches = { 184 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 185 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D430"), 186 }, 187 }, 188 { 189 /* Reported-by: Hans de Goede <hdegoede@redhat.com> */ 190 .matches = { 191 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 192 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D620"), 193 }, 194 }, 195 { 196 /* Extrapolated from other entries */ 197 .matches = { 198 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 199 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D630"), 200 }, 201 }, 202 #endif 203 { } 204 }; 205 206 static void alps_set_abs_params_st(struct alps_data *priv, 207 struct input_dev *dev1); 208 static void alps_set_abs_params_semi_mt(struct alps_data *priv, 209 struct input_dev *dev1); 210 static void alps_set_abs_params_v7(struct alps_data *priv, 211 struct input_dev *dev1); 212 static void alps_set_abs_params_ss4_v2(struct alps_data *priv, 213 struct input_dev *dev1); 214 215 /* Packet formats are described in Documentation/input/alps.txt */ 216 217 static bool alps_is_valid_first_byte(struct alps_data *priv, 218 unsigned char data) 219 { 220 return (data & priv->mask0) == priv->byte0; 221 } 222 223 static void alps_report_buttons(struct input_dev *dev1, struct input_dev *dev2, 224 int left, int right, int middle) 225 { 226 struct input_dev *dev; 227 228 /* 229 * If shared button has already been reported on the 230 * other device (dev2) then this event should be also 231 * sent through that device. 232 */ 233 dev = (dev2 && test_bit(BTN_LEFT, dev2->key)) ? dev2 : dev1; 234 input_report_key(dev, BTN_LEFT, left); 235 236 dev = (dev2 && test_bit(BTN_RIGHT, dev2->key)) ? dev2 : dev1; 237 input_report_key(dev, BTN_RIGHT, right); 238 239 dev = (dev2 && test_bit(BTN_MIDDLE, dev2->key)) ? dev2 : dev1; 240 input_report_key(dev, BTN_MIDDLE, middle); 241 242 /* 243 * Sync the _other_ device now, we'll do the first 244 * device later once we report the rest of the events. 245 */ 246 if (dev2) 247 input_sync(dev2); 248 } 249 250 static void alps_process_packet_v1_v2(struct psmouse *psmouse) 251 { 252 struct alps_data *priv = psmouse->private; 253 unsigned char *packet = psmouse->packet; 254 struct input_dev *dev = psmouse->dev; 255 struct input_dev *dev2 = priv->dev2; 256 int x, y, z, ges, fin, left, right, middle; 257 int back = 0, forward = 0; 258 259 if (priv->proto_version == ALPS_PROTO_V1) { 260 left = packet[2] & 0x10; 261 right = packet[2] & 0x08; 262 middle = 0; 263 x = packet[1] | ((packet[0] & 0x07) << 7); 264 y = packet[4] | ((packet[3] & 0x07) << 7); 265 z = packet[5]; 266 } else { 267 left = packet[3] & 1; 268 right = packet[3] & 2; 269 middle = packet[3] & 4; 270 x = packet[1] | ((packet[2] & 0x78) << (7 - 3)); 271 y = packet[4] | ((packet[3] & 0x70) << (7 - 4)); 272 z = packet[5]; 273 } 274 275 if (priv->flags & ALPS_FW_BK_1) { 276 back = packet[0] & 0x10; 277 forward = packet[2] & 4; 278 } 279 280 if (priv->flags & ALPS_FW_BK_2) { 281 back = packet[3] & 4; 282 forward = packet[2] & 4; 283 if ((middle = forward && back)) 284 forward = back = 0; 285 } 286 287 ges = packet[2] & 1; 288 fin = packet[2] & 2; 289 290 if ((priv->flags & ALPS_DUALPOINT) && z == 127) { 291 input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x)); 292 input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y)); 293 294 alps_report_buttons(dev2, dev, left, right, middle); 295 296 input_sync(dev2); 297 return; 298 } 299 300 /* Some models have separate stick button bits */ 301 if (priv->flags & ALPS_STICK_BITS) { 302 left |= packet[0] & 1; 303 right |= packet[0] & 2; 304 middle |= packet[0] & 4; 305 } 306 307 alps_report_buttons(dev, dev2, left, right, middle); 308 309 /* Convert hardware tap to a reasonable Z value */ 310 if (ges && !fin) 311 z = 40; 312 313 /* 314 * A "tap and drag" operation is reported by the hardware as a transition 315 * from (!fin && ges) to (fin && ges). This should be translated to the 316 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually. 317 */ 318 if (ges && fin && !priv->prev_fin) { 319 input_report_abs(dev, ABS_X, x); 320 input_report_abs(dev, ABS_Y, y); 321 input_report_abs(dev, ABS_PRESSURE, 0); 322 input_report_key(dev, BTN_TOOL_FINGER, 0); 323 input_sync(dev); 324 } 325 priv->prev_fin = fin; 326 327 if (z > 30) 328 input_report_key(dev, BTN_TOUCH, 1); 329 if (z < 25) 330 input_report_key(dev, BTN_TOUCH, 0); 331 332 if (z > 0) { 333 input_report_abs(dev, ABS_X, x); 334 input_report_abs(dev, ABS_Y, y); 335 } 336 337 input_report_abs(dev, ABS_PRESSURE, z); 338 input_report_key(dev, BTN_TOOL_FINGER, z > 0); 339 340 if (priv->flags & ALPS_WHEEL) 341 input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07)); 342 343 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 344 input_report_key(dev, BTN_FORWARD, forward); 345 input_report_key(dev, BTN_BACK, back); 346 } 347 348 if (priv->flags & ALPS_FOUR_BUTTONS) { 349 input_report_key(dev, BTN_0, packet[2] & 4); 350 input_report_key(dev, BTN_1, packet[0] & 0x10); 351 input_report_key(dev, BTN_2, packet[3] & 4); 352 input_report_key(dev, BTN_3, packet[0] & 0x20); 353 } 354 355 input_sync(dev); 356 } 357 358 static void alps_get_bitmap_points(unsigned int map, 359 struct alps_bitmap_point *low, 360 struct alps_bitmap_point *high, 361 int *fingers) 362 { 363 struct alps_bitmap_point *point; 364 int i, bit, prev_bit = 0; 365 366 point = low; 367 for (i = 0; map != 0; i++, map >>= 1) { 368 bit = map & 1; 369 if (bit) { 370 if (!prev_bit) { 371 point->start_bit = i; 372 point->num_bits = 0; 373 (*fingers)++; 374 } 375 point->num_bits++; 376 } else { 377 if (prev_bit) 378 point = high; 379 } 380 prev_bit = bit; 381 } 382 } 383 384 /* 385 * Process bitmap data from semi-mt protocols. Returns the number of 386 * fingers detected. A return value of 0 means at least one of the 387 * bitmaps was empty. 388 * 389 * The bitmaps don't have enough data to track fingers, so this function 390 * only generates points representing a bounding box of all contacts. 391 * These points are returned in fields->mt when the return value 392 * is greater than 0. 393 */ 394 static int alps_process_bitmap(struct alps_data *priv, 395 struct alps_fields *fields) 396 { 397 int i, fingers_x = 0, fingers_y = 0, fingers, closest; 398 struct alps_bitmap_point x_low = {0,}, x_high = {0,}; 399 struct alps_bitmap_point y_low = {0,}, y_high = {0,}; 400 struct input_mt_pos corner[4]; 401 402 if (!fields->x_map || !fields->y_map) 403 return 0; 404 405 alps_get_bitmap_points(fields->x_map, &x_low, &x_high, &fingers_x); 406 alps_get_bitmap_points(fields->y_map, &y_low, &y_high, &fingers_y); 407 408 /* 409 * Fingers can overlap, so we use the maximum count of fingers 410 * on either axis as the finger count. 411 */ 412 fingers = max(fingers_x, fingers_y); 413 414 /* 415 * If an axis reports only a single contact, we have overlapping or 416 * adjacent fingers. Divide the single contact between the two points. 417 */ 418 if (fingers_x == 1) { 419 i = (x_low.num_bits - 1) / 2; 420 x_low.num_bits = x_low.num_bits - i; 421 x_high.start_bit = x_low.start_bit + i; 422 x_high.num_bits = max(i, 1); 423 } 424 if (fingers_y == 1) { 425 i = (y_low.num_bits - 1) / 2; 426 y_low.num_bits = y_low.num_bits - i; 427 y_high.start_bit = y_low.start_bit + i; 428 y_high.num_bits = max(i, 1); 429 } 430 431 /* top-left corner */ 432 corner[0].x = 433 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) / 434 (2 * (priv->x_bits - 1)); 435 corner[0].y = 436 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) / 437 (2 * (priv->y_bits - 1)); 438 439 /* top-right corner */ 440 corner[1].x = 441 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) / 442 (2 * (priv->x_bits - 1)); 443 corner[1].y = 444 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) / 445 (2 * (priv->y_bits - 1)); 446 447 /* bottom-right corner */ 448 corner[2].x = 449 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) / 450 (2 * (priv->x_bits - 1)); 451 corner[2].y = 452 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) / 453 (2 * (priv->y_bits - 1)); 454 455 /* bottom-left corner */ 456 corner[3].x = 457 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) / 458 (2 * (priv->x_bits - 1)); 459 corner[3].y = 460 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) / 461 (2 * (priv->y_bits - 1)); 462 463 /* x-bitmap order is reversed on v5 touchpads */ 464 if (priv->proto_version == ALPS_PROTO_V5) { 465 for (i = 0; i < 4; i++) 466 corner[i].x = priv->x_max - corner[i].x; 467 } 468 469 /* y-bitmap order is reversed on v3 and v4 touchpads */ 470 if (priv->proto_version == ALPS_PROTO_V3 || 471 priv->proto_version == ALPS_PROTO_V4) { 472 for (i = 0; i < 4; i++) 473 corner[i].y = priv->y_max - corner[i].y; 474 } 475 476 /* 477 * We only select a corner for the second touch once per 2 finger 478 * touch sequence to avoid the chosen corner (and thus the coordinates) 479 * jumping around when the first touch is in the middle. 480 */ 481 if (priv->second_touch == -1) { 482 /* Find corner closest to our st coordinates */ 483 closest = 0x7fffffff; 484 for (i = 0; i < 4; i++) { 485 int dx = fields->st.x - corner[i].x; 486 int dy = fields->st.y - corner[i].y; 487 int distance = dx * dx + dy * dy; 488 489 if (distance < closest) { 490 priv->second_touch = i; 491 closest = distance; 492 } 493 } 494 /* And select the opposite corner to use for the 2nd touch */ 495 priv->second_touch = (priv->second_touch + 2) % 4; 496 } 497 498 fields->mt[0] = fields->st; 499 fields->mt[1] = corner[priv->second_touch]; 500 501 return fingers; 502 } 503 504 static void alps_set_slot(struct input_dev *dev, int slot, int x, int y) 505 { 506 input_mt_slot(dev, slot); 507 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); 508 input_report_abs(dev, ABS_MT_POSITION_X, x); 509 input_report_abs(dev, ABS_MT_POSITION_Y, y); 510 } 511 512 static void alps_report_mt_data(struct psmouse *psmouse, int n) 513 { 514 struct alps_data *priv = psmouse->private; 515 struct input_dev *dev = psmouse->dev; 516 struct alps_fields *f = &priv->f; 517 int i, slot[MAX_TOUCHES]; 518 519 input_mt_assign_slots(dev, slot, f->mt, n, 0); 520 for (i = 0; i < n; i++) 521 alps_set_slot(dev, slot[i], f->mt[i].x, f->mt[i].y); 522 523 input_mt_sync_frame(dev); 524 } 525 526 static void alps_report_semi_mt_data(struct psmouse *psmouse, int fingers) 527 { 528 struct alps_data *priv = psmouse->private; 529 struct input_dev *dev = psmouse->dev; 530 struct alps_fields *f = &priv->f; 531 532 /* Use st data when we don't have mt data */ 533 if (fingers < 2) { 534 f->mt[0].x = f->st.x; 535 f->mt[0].y = f->st.y; 536 fingers = f->pressure > 0 ? 1 : 0; 537 priv->second_touch = -1; 538 } 539 540 if (fingers >= 1) 541 alps_set_slot(dev, 0, f->mt[0].x, f->mt[0].y); 542 if (fingers >= 2) 543 alps_set_slot(dev, 1, f->mt[1].x, f->mt[1].y); 544 input_mt_sync_frame(dev); 545 546 input_mt_report_finger_count(dev, fingers); 547 548 input_report_key(dev, BTN_LEFT, f->left); 549 input_report_key(dev, BTN_RIGHT, f->right); 550 input_report_key(dev, BTN_MIDDLE, f->middle); 551 552 input_report_abs(dev, ABS_PRESSURE, f->pressure); 553 554 input_sync(dev); 555 } 556 557 static void alps_process_trackstick_packet_v3(struct psmouse *psmouse) 558 { 559 struct alps_data *priv = psmouse->private; 560 unsigned char *packet = psmouse->packet; 561 struct input_dev *dev = priv->dev2; 562 int x, y, z, left, right, middle; 563 564 /* It should be a DualPoint when received trackstick packet */ 565 if (!(priv->flags & ALPS_DUALPOINT)) { 566 psmouse_warn(psmouse, 567 "Rejected trackstick packet from non DualPoint device"); 568 return; 569 } 570 571 /* Sanity check packet */ 572 if (!(packet[0] & 0x40)) { 573 psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n"); 574 return; 575 } 576 577 /* 578 * There's a special packet that seems to indicate the end 579 * of a stream of trackstick data. Filter these out. 580 */ 581 if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f) 582 return; 583 584 x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f)); 585 y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f)); 586 z = (packet[4] & 0x7c) >> 2; 587 588 /* 589 * The x and y values tend to be quite large, and when used 590 * alone the trackstick is difficult to use. Scale them down 591 * to compensate. 592 */ 593 x /= 8; 594 y /= 8; 595 596 input_report_rel(dev, REL_X, x); 597 input_report_rel(dev, REL_Y, -y); 598 599 /* 600 * Most ALPS models report the trackstick buttons in the touchpad 601 * packets, but a few report them here. No reliable way has been 602 * found to differentiate between the models upfront, so we enable 603 * the quirk in response to seeing a button press in the trackstick 604 * packet. 605 */ 606 left = packet[3] & 0x01; 607 right = packet[3] & 0x02; 608 middle = packet[3] & 0x04; 609 610 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) && 611 (left || right || middle)) 612 priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS; 613 614 if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) { 615 input_report_key(dev, BTN_LEFT, left); 616 input_report_key(dev, BTN_RIGHT, right); 617 input_report_key(dev, BTN_MIDDLE, middle); 618 } 619 620 input_sync(dev); 621 return; 622 } 623 624 static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p) 625 { 626 f->left = !!(p[3] & 0x01); 627 f->right = !!(p[3] & 0x02); 628 f->middle = !!(p[3] & 0x04); 629 630 f->ts_left = !!(p[3] & 0x10); 631 f->ts_right = !!(p[3] & 0x20); 632 f->ts_middle = !!(p[3] & 0x40); 633 } 634 635 static int alps_decode_pinnacle(struct alps_fields *f, unsigned char *p, 636 struct psmouse *psmouse) 637 { 638 f->first_mp = !!(p[4] & 0x40); 639 f->is_mp = !!(p[0] & 0x40); 640 641 if (f->is_mp) { 642 f->fingers = (p[5] & 0x3) + 1; 643 f->x_map = ((p[4] & 0x7e) << 8) | 644 ((p[1] & 0x7f) << 2) | 645 ((p[0] & 0x30) >> 4); 646 f->y_map = ((p[3] & 0x70) << 4) | 647 ((p[2] & 0x7f) << 1) | 648 (p[4] & 0x01); 649 } else { 650 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | 651 ((p[0] & 0x30) >> 4); 652 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); 653 f->pressure = p[5] & 0x7f; 654 655 alps_decode_buttons_v3(f, p); 656 } 657 658 return 0; 659 } 660 661 static int alps_decode_rushmore(struct alps_fields *f, unsigned char *p, 662 struct psmouse *psmouse) 663 { 664 f->first_mp = !!(p[4] & 0x40); 665 f->is_mp = !!(p[5] & 0x40); 666 667 if (f->is_mp) { 668 f->fingers = max((p[5] & 0x3), ((p[5] >> 2) & 0x3)) + 1; 669 f->x_map = ((p[5] & 0x10) << 11) | 670 ((p[4] & 0x7e) << 8) | 671 ((p[1] & 0x7f) << 2) | 672 ((p[0] & 0x30) >> 4); 673 f->y_map = ((p[5] & 0x20) << 6) | 674 ((p[3] & 0x70) << 4) | 675 ((p[2] & 0x7f) << 1) | 676 (p[4] & 0x01); 677 } else { 678 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | 679 ((p[0] & 0x30) >> 4); 680 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); 681 f->pressure = p[5] & 0x7f; 682 683 alps_decode_buttons_v3(f, p); 684 } 685 686 return 0; 687 } 688 689 static int alps_decode_dolphin(struct alps_fields *f, unsigned char *p, 690 struct psmouse *psmouse) 691 { 692 u64 palm_data = 0; 693 struct alps_data *priv = psmouse->private; 694 695 f->first_mp = !!(p[0] & 0x02); 696 f->is_mp = !!(p[0] & 0x20); 697 698 if (!f->is_mp) { 699 f->st.x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7)); 700 f->st.y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3)); 701 f->pressure = (p[0] & 4) ? 0 : p[5] & 0x7f; 702 alps_decode_buttons_v3(f, p); 703 } else { 704 f->fingers = ((p[0] & 0x6) >> 1 | 705 (p[0] & 0x10) >> 2); 706 707 palm_data = (p[1] & 0x7f) | 708 ((p[2] & 0x7f) << 7) | 709 ((p[4] & 0x7f) << 14) | 710 ((p[5] & 0x7f) << 21) | 711 ((p[3] & 0x07) << 28) | 712 (((u64)p[3] & 0x70) << 27) | 713 (((u64)p[0] & 0x01) << 34); 714 715 /* Y-profile is stored in P(0) to p(n-1), n = y_bits; */ 716 f->y_map = palm_data & (BIT(priv->y_bits) - 1); 717 718 /* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */ 719 f->x_map = (palm_data >> priv->y_bits) & 720 (BIT(priv->x_bits) - 1); 721 } 722 723 return 0; 724 } 725 726 static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse) 727 { 728 struct alps_data *priv = psmouse->private; 729 unsigned char *packet = psmouse->packet; 730 struct input_dev *dev2 = priv->dev2; 731 struct alps_fields *f = &priv->f; 732 int fingers = 0; 733 734 memset(f, 0, sizeof(*f)); 735 736 priv->decode_fields(f, packet, psmouse); 737 738 /* 739 * There's no single feature of touchpad position and bitmap packets 740 * that can be used to distinguish between them. We rely on the fact 741 * that a bitmap packet should always follow a position packet with 742 * bit 6 of packet[4] set. 743 */ 744 if (priv->multi_packet) { 745 /* 746 * Sometimes a position packet will indicate a multi-packet 747 * sequence, but then what follows is another position 748 * packet. Check for this, and when it happens process the 749 * position packet as usual. 750 */ 751 if (f->is_mp) { 752 fingers = f->fingers; 753 /* 754 * Bitmap processing uses position packet's coordinate 755 * data, so we need to do decode it first. 756 */ 757 priv->decode_fields(f, priv->multi_data, psmouse); 758 if (alps_process_bitmap(priv, f) == 0) 759 fingers = 0; /* Use st data */ 760 } else { 761 priv->multi_packet = 0; 762 } 763 } 764 765 /* 766 * Bit 6 of byte 0 is not usually set in position packets. The only 767 * times it seems to be set is in situations where the data is 768 * suspect anyway, e.g. a palm resting flat on the touchpad. Given 769 * this combined with the fact that this bit is useful for filtering 770 * out misidentified bitmap packets, we reject anything with this 771 * bit set. 772 */ 773 if (f->is_mp) 774 return; 775 776 if (!priv->multi_packet && f->first_mp) { 777 priv->multi_packet = 1; 778 memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); 779 return; 780 } 781 782 priv->multi_packet = 0; 783 784 /* 785 * Sometimes the hardware sends a single packet with z = 0 786 * in the middle of a stream. Real releases generate packets 787 * with x, y, and z all zero, so these seem to be flukes. 788 * Ignore them. 789 */ 790 if (f->st.x && f->st.y && !f->pressure) 791 return; 792 793 alps_report_semi_mt_data(psmouse, fingers); 794 795 if ((priv->flags & ALPS_DUALPOINT) && 796 !(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) { 797 input_report_key(dev2, BTN_LEFT, f->ts_left); 798 input_report_key(dev2, BTN_RIGHT, f->ts_right); 799 input_report_key(dev2, BTN_MIDDLE, f->ts_middle); 800 input_sync(dev2); 801 } 802 } 803 804 static void alps_process_packet_v3(struct psmouse *psmouse) 805 { 806 unsigned char *packet = psmouse->packet; 807 808 /* 809 * v3 protocol packets come in three types, two representing 810 * touchpad data and one representing trackstick data. 811 * Trackstick packets seem to be distinguished by always 812 * having 0x3f in the last byte. This value has never been 813 * observed in the last byte of either of the other types 814 * of packets. 815 */ 816 if (packet[5] == 0x3f) { 817 alps_process_trackstick_packet_v3(psmouse); 818 return; 819 } 820 821 alps_process_touchpad_packet_v3_v5(psmouse); 822 } 823 824 static void alps_process_packet_v6(struct psmouse *psmouse) 825 { 826 struct alps_data *priv = psmouse->private; 827 unsigned char *packet = psmouse->packet; 828 struct input_dev *dev = psmouse->dev; 829 struct input_dev *dev2 = priv->dev2; 830 int x, y, z, left, right, middle; 831 832 /* 833 * We can use Byte5 to distinguish if the packet is from Touchpad 834 * or Trackpoint. 835 * Touchpad: 0 - 0x7E 836 * Trackpoint: 0x7F 837 */ 838 if (packet[5] == 0x7F) { 839 /* It should be a DualPoint when received Trackpoint packet */ 840 if (!(priv->flags & ALPS_DUALPOINT)) { 841 psmouse_warn(psmouse, 842 "Rejected trackstick packet from non DualPoint device"); 843 return; 844 } 845 846 /* Trackpoint packet */ 847 x = packet[1] | ((packet[3] & 0x20) << 2); 848 y = packet[2] | ((packet[3] & 0x40) << 1); 849 z = packet[4]; 850 left = packet[3] & 0x01; 851 right = packet[3] & 0x02; 852 middle = packet[3] & 0x04; 853 854 /* To prevent the cursor jump when finger lifted */ 855 if (x == 0x7F && y == 0x7F && z == 0x7F) 856 x = y = z = 0; 857 858 /* Divide 4 since trackpoint's speed is too fast */ 859 input_report_rel(dev2, REL_X, (char)x / 4); 860 input_report_rel(dev2, REL_Y, -((char)y / 4)); 861 862 input_report_key(dev2, BTN_LEFT, left); 863 input_report_key(dev2, BTN_RIGHT, right); 864 input_report_key(dev2, BTN_MIDDLE, middle); 865 866 input_sync(dev2); 867 return; 868 } 869 870 /* Touchpad packet */ 871 x = packet[1] | ((packet[3] & 0x78) << 4); 872 y = packet[2] | ((packet[4] & 0x78) << 4); 873 z = packet[5]; 874 left = packet[3] & 0x01; 875 right = packet[3] & 0x02; 876 877 if (z > 30) 878 input_report_key(dev, BTN_TOUCH, 1); 879 if (z < 25) 880 input_report_key(dev, BTN_TOUCH, 0); 881 882 if (z > 0) { 883 input_report_abs(dev, ABS_X, x); 884 input_report_abs(dev, ABS_Y, y); 885 } 886 887 input_report_abs(dev, ABS_PRESSURE, z); 888 input_report_key(dev, BTN_TOOL_FINGER, z > 0); 889 890 /* v6 touchpad does not have middle button */ 891 input_report_key(dev, BTN_LEFT, left); 892 input_report_key(dev, BTN_RIGHT, right); 893 894 input_sync(dev); 895 } 896 897 static void alps_process_packet_v4(struct psmouse *psmouse) 898 { 899 struct alps_data *priv = psmouse->private; 900 unsigned char *packet = psmouse->packet; 901 struct alps_fields *f = &priv->f; 902 int offset; 903 904 /* 905 * v4 has a 6-byte encoding for bitmap data, but this data is 906 * broken up between 3 normal packets. Use priv->multi_packet to 907 * track our position in the bitmap packet. 908 */ 909 if (packet[6] & 0x40) { 910 /* sync, reset position */ 911 priv->multi_packet = 0; 912 } 913 914 if (WARN_ON_ONCE(priv->multi_packet > 2)) 915 return; 916 917 offset = 2 * priv->multi_packet; 918 priv->multi_data[offset] = packet[6]; 919 priv->multi_data[offset + 1] = packet[7]; 920 921 f->left = !!(packet[4] & 0x01); 922 f->right = !!(packet[4] & 0x02); 923 924 f->st.x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) | 925 ((packet[0] & 0x30) >> 4); 926 f->st.y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f); 927 f->pressure = packet[5] & 0x7f; 928 929 if (++priv->multi_packet > 2) { 930 priv->multi_packet = 0; 931 932 f->x_map = ((priv->multi_data[2] & 0x1f) << 10) | 933 ((priv->multi_data[3] & 0x60) << 3) | 934 ((priv->multi_data[0] & 0x3f) << 2) | 935 ((priv->multi_data[1] & 0x60) >> 5); 936 f->y_map = ((priv->multi_data[5] & 0x01) << 10) | 937 ((priv->multi_data[3] & 0x1f) << 5) | 938 (priv->multi_data[1] & 0x1f); 939 940 f->fingers = alps_process_bitmap(priv, f); 941 } 942 943 alps_report_semi_mt_data(psmouse, f->fingers); 944 } 945 946 static bool alps_is_valid_package_v7(struct psmouse *psmouse) 947 { 948 switch (psmouse->pktcnt) { 949 case 3: 950 return (psmouse->packet[2] & 0x40) == 0x40; 951 case 4: 952 return (psmouse->packet[3] & 0x48) == 0x48; 953 case 6: 954 return (psmouse->packet[5] & 0x40) == 0x00; 955 } 956 return true; 957 } 958 959 static unsigned char alps_get_packet_id_v7(char *byte) 960 { 961 unsigned char packet_id; 962 963 if (byte[4] & 0x40) 964 packet_id = V7_PACKET_ID_TWO; 965 else if (byte[4] & 0x01) 966 packet_id = V7_PACKET_ID_MULTI; 967 else if ((byte[0] & 0x10) && !(byte[4] & 0x43)) 968 packet_id = V7_PACKET_ID_NEW; 969 else if (byte[1] == 0x00 && byte[4] == 0x00) 970 packet_id = V7_PACKET_ID_IDLE; 971 else 972 packet_id = V7_PACKET_ID_UNKNOWN; 973 974 return packet_id; 975 } 976 977 static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt, 978 unsigned char *pkt, 979 unsigned char pkt_id) 980 { 981 mt[0].x = ((pkt[2] & 0x80) << 4); 982 mt[0].x |= ((pkt[2] & 0x3F) << 5); 983 mt[0].x |= ((pkt[3] & 0x30) >> 1); 984 mt[0].x |= (pkt[3] & 0x07); 985 mt[0].y = (pkt[1] << 3) | (pkt[0] & 0x07); 986 987 mt[1].x = ((pkt[3] & 0x80) << 4); 988 mt[1].x |= ((pkt[4] & 0x80) << 3); 989 mt[1].x |= ((pkt[4] & 0x3F) << 4); 990 mt[1].y = ((pkt[5] & 0x80) << 3); 991 mt[1].y |= ((pkt[5] & 0x3F) << 4); 992 993 switch (pkt_id) { 994 case V7_PACKET_ID_TWO: 995 mt[1].x &= ~0x000F; 996 mt[1].y |= 0x000F; 997 /* Detect false-postive touches where x & y report max value */ 998 if (mt[1].y == 0x7ff && mt[1].x == 0xff0) { 999 mt[1].x = 0; 1000 /* y gets set to 0 at the end of this function */ 1001 } 1002 break; 1003 1004 case V7_PACKET_ID_MULTI: 1005 mt[1].x &= ~0x003F; 1006 mt[1].y &= ~0x0020; 1007 mt[1].y |= ((pkt[4] & 0x02) << 4); 1008 mt[1].y |= 0x001F; 1009 break; 1010 1011 case V7_PACKET_ID_NEW: 1012 mt[1].x &= ~0x003F; 1013 mt[1].x |= (pkt[0] & 0x20); 1014 mt[1].y |= 0x000F; 1015 break; 1016 } 1017 1018 mt[0].y = 0x7FF - mt[0].y; 1019 mt[1].y = 0x7FF - mt[1].y; 1020 } 1021 1022 static int alps_get_mt_count(struct input_mt_pos *mt) 1023 { 1024 int i, fingers = 0; 1025 1026 for (i = 0; i < MAX_TOUCHES; i++) { 1027 if (mt[i].x != 0 || mt[i].y != 0) 1028 fingers++; 1029 } 1030 1031 return fingers; 1032 } 1033 1034 static int alps_decode_packet_v7(struct alps_fields *f, 1035 unsigned char *p, 1036 struct psmouse *psmouse) 1037 { 1038 struct alps_data *priv = psmouse->private; 1039 unsigned char pkt_id; 1040 1041 pkt_id = alps_get_packet_id_v7(p); 1042 if (pkt_id == V7_PACKET_ID_IDLE) 1043 return 0; 1044 if (pkt_id == V7_PACKET_ID_UNKNOWN) 1045 return -1; 1046 /* 1047 * NEW packets are send to indicate a discontinuity in the finger 1048 * coordinate reporting. Specifically a finger may have moved from 1049 * slot 0 to 1 or vice versa. INPUT_MT_TRACK takes care of this for 1050 * us. 1051 * 1052 * NEW packets have 3 problems: 1053 * 1) They do not contain middle / right button info (on non clickpads) 1054 * this can be worked around by preserving the old button state 1055 * 2) They do not contain an accurate fingercount, and they are 1056 * typically send when the number of fingers changes. We cannot use 1057 * the old finger count as that may mismatch with the amount of 1058 * touch coordinates we've available in the NEW packet 1059 * 3) Their x data for the second touch is inaccurate leading to 1060 * a possible jump of the x coordinate by 16 units when the first 1061 * non NEW packet comes in 1062 * Since problems 2 & 3 cannot be worked around, just ignore them. 1063 */ 1064 if (pkt_id == V7_PACKET_ID_NEW) 1065 return 1; 1066 1067 alps_get_finger_coordinate_v7(f->mt, p, pkt_id); 1068 1069 if (pkt_id == V7_PACKET_ID_TWO) 1070 f->fingers = alps_get_mt_count(f->mt); 1071 else /* pkt_id == V7_PACKET_ID_MULTI */ 1072 f->fingers = 3 + (p[5] & 0x03); 1073 1074 f->left = (p[0] & 0x80) >> 7; 1075 if (priv->flags & ALPS_BUTTONPAD) { 1076 if (p[0] & 0x20) 1077 f->fingers++; 1078 if (p[0] & 0x10) 1079 f->fingers++; 1080 } else { 1081 f->right = (p[0] & 0x20) >> 5; 1082 f->middle = (p[0] & 0x10) >> 4; 1083 } 1084 1085 /* Sometimes a single touch is reported in mt[1] rather then mt[0] */ 1086 if (f->fingers == 1 && f->mt[0].x == 0 && f->mt[0].y == 0) { 1087 f->mt[0].x = f->mt[1].x; 1088 f->mt[0].y = f->mt[1].y; 1089 f->mt[1].x = 0; 1090 f->mt[1].y = 0; 1091 } 1092 1093 return 0; 1094 } 1095 1096 static void alps_process_trackstick_packet_v7(struct psmouse *psmouse) 1097 { 1098 struct alps_data *priv = psmouse->private; 1099 unsigned char *packet = psmouse->packet; 1100 struct input_dev *dev2 = priv->dev2; 1101 int x, y, z, left, right, middle; 1102 1103 /* It should be a DualPoint when received trackstick packet */ 1104 if (!(priv->flags & ALPS_DUALPOINT)) { 1105 psmouse_warn(psmouse, 1106 "Rejected trackstick packet from non DualPoint device"); 1107 return; 1108 } 1109 1110 x = ((packet[2] & 0xbf)) | ((packet[3] & 0x10) << 2); 1111 y = (packet[3] & 0x07) | (packet[4] & 0xb8) | 1112 ((packet[3] & 0x20) << 1); 1113 z = (packet[5] & 0x3f) | ((packet[3] & 0x80) >> 1); 1114 1115 left = (packet[1] & 0x01); 1116 right = (packet[1] & 0x02) >> 1; 1117 middle = (packet[1] & 0x04) >> 2; 1118 1119 input_report_rel(dev2, REL_X, (char)x); 1120 input_report_rel(dev2, REL_Y, -((char)y)); 1121 1122 input_report_key(dev2, BTN_LEFT, left); 1123 input_report_key(dev2, BTN_RIGHT, right); 1124 input_report_key(dev2, BTN_MIDDLE, middle); 1125 1126 input_sync(dev2); 1127 } 1128 1129 static void alps_process_touchpad_packet_v7(struct psmouse *psmouse) 1130 { 1131 struct alps_data *priv = psmouse->private; 1132 struct input_dev *dev = psmouse->dev; 1133 struct alps_fields *f = &priv->f; 1134 1135 memset(f, 0, sizeof(*f)); 1136 1137 if (priv->decode_fields(f, psmouse->packet, psmouse)) 1138 return; 1139 1140 alps_report_mt_data(psmouse, alps_get_mt_count(f->mt)); 1141 1142 input_mt_report_finger_count(dev, f->fingers); 1143 1144 input_report_key(dev, BTN_LEFT, f->left); 1145 input_report_key(dev, BTN_RIGHT, f->right); 1146 input_report_key(dev, BTN_MIDDLE, f->middle); 1147 1148 input_sync(dev); 1149 } 1150 1151 static void alps_process_packet_v7(struct psmouse *psmouse) 1152 { 1153 unsigned char *packet = psmouse->packet; 1154 1155 if (packet[0] == 0x48 && (packet[4] & 0x47) == 0x06) 1156 alps_process_trackstick_packet_v7(psmouse); 1157 else 1158 alps_process_touchpad_packet_v7(psmouse); 1159 } 1160 1161 static enum SS4_PACKET_ID alps_get_pkt_id_ss4_v2(unsigned char *byte) 1162 { 1163 enum SS4_PACKET_ID pkt_id = SS4_PACKET_ID_IDLE; 1164 1165 switch (byte[3] & 0x30) { 1166 case 0x00: 1167 if (SS4_IS_IDLE_V2(byte)) { 1168 pkt_id = SS4_PACKET_ID_IDLE; 1169 } else { 1170 pkt_id = SS4_PACKET_ID_ONE; 1171 } 1172 break; 1173 case 0x10: 1174 /* two-finger finger positions */ 1175 pkt_id = SS4_PACKET_ID_TWO; 1176 break; 1177 case 0x20: 1178 /* stick pointer */ 1179 pkt_id = SS4_PACKET_ID_STICK; 1180 break; 1181 case 0x30: 1182 /* third and fourth finger positions */ 1183 pkt_id = SS4_PACKET_ID_MULTI; 1184 break; 1185 } 1186 1187 return pkt_id; 1188 } 1189 1190 static int alps_decode_ss4_v2(struct alps_fields *f, 1191 unsigned char *p, struct psmouse *psmouse) 1192 { 1193 struct alps_data *priv = psmouse->private; 1194 enum SS4_PACKET_ID pkt_id; 1195 unsigned int no_data_x, no_data_y; 1196 1197 pkt_id = alps_get_pkt_id_ss4_v2(p); 1198 1199 /* Current packet is 1Finger coordinate packet */ 1200 switch (pkt_id) { 1201 case SS4_PACKET_ID_ONE: 1202 f->mt[0].x = SS4_1F_X_V2(p); 1203 f->mt[0].y = SS4_1F_Y_V2(p); 1204 f->pressure = ((SS4_1F_Z_V2(p)) * 2) & 0x7f; 1205 /* 1206 * When a button is held the device will give us events 1207 * with x, y, and pressure of 0. This causes annoying jumps 1208 * if a touch is released while the button is held. 1209 * Handle this by claiming zero contacts. 1210 */ 1211 f->fingers = f->pressure > 0 ? 1 : 0; 1212 f->first_mp = 0; 1213 f->is_mp = 0; 1214 break; 1215 1216 case SS4_PACKET_ID_TWO: 1217 if (priv->flags & ALPS_BUTTONPAD) { 1218 if (IS_SS4PLUS_DEV(priv->dev_id)) { 1219 f->mt[0].x = SS4_PLUS_BTL_MF_X_V2(p, 0); 1220 f->mt[1].x = SS4_PLUS_BTL_MF_X_V2(p, 1); 1221 } else { 1222 f->mt[0].x = SS4_BTL_MF_X_V2(p, 0); 1223 f->mt[1].x = SS4_BTL_MF_X_V2(p, 1); 1224 } 1225 f->mt[0].y = SS4_BTL_MF_Y_V2(p, 0); 1226 f->mt[1].y = SS4_BTL_MF_Y_V2(p, 1); 1227 } else { 1228 if (IS_SS4PLUS_DEV(priv->dev_id)) { 1229 f->mt[0].x = SS4_PLUS_STD_MF_X_V2(p, 0); 1230 f->mt[1].x = SS4_PLUS_STD_MF_X_V2(p, 1); 1231 } else { 1232 f->mt[0].x = SS4_STD_MF_X_V2(p, 0); 1233 f->mt[1].x = SS4_STD_MF_X_V2(p, 1); 1234 } 1235 f->mt[0].y = SS4_STD_MF_Y_V2(p, 0); 1236 f->mt[1].y = SS4_STD_MF_Y_V2(p, 1); 1237 } 1238 f->pressure = SS4_MF_Z_V2(p, 0) ? 0x30 : 0; 1239 1240 if (SS4_IS_MF_CONTINUE(p)) { 1241 f->first_mp = 1; 1242 } else { 1243 f->fingers = 2; 1244 f->first_mp = 0; 1245 } 1246 f->is_mp = 0; 1247 1248 break; 1249 1250 case SS4_PACKET_ID_MULTI: 1251 if (priv->flags & ALPS_BUTTONPAD) { 1252 if (IS_SS4PLUS_DEV(priv->dev_id)) { 1253 f->mt[2].x = SS4_PLUS_BTL_MF_X_V2(p, 0); 1254 f->mt[3].x = SS4_PLUS_BTL_MF_X_V2(p, 1); 1255 no_data_x = SS4_PLUS_MFPACKET_NO_AX_BL; 1256 } else { 1257 f->mt[2].x = SS4_BTL_MF_X_V2(p, 0); 1258 f->mt[3].x = SS4_BTL_MF_X_V2(p, 1); 1259 no_data_x = SS4_MFPACKET_NO_AX_BL; 1260 } 1261 no_data_y = SS4_MFPACKET_NO_AY_BL; 1262 1263 f->mt[2].y = SS4_BTL_MF_Y_V2(p, 0); 1264 f->mt[3].y = SS4_BTL_MF_Y_V2(p, 1); 1265 } else { 1266 if (IS_SS4PLUS_DEV(priv->dev_id)) { 1267 f->mt[2].x = SS4_PLUS_STD_MF_X_V2(p, 0); 1268 f->mt[3].x = SS4_PLUS_STD_MF_X_V2(p, 1); 1269 no_data_x = SS4_PLUS_MFPACKET_NO_AX; 1270 } else { 1271 f->mt[2].x = SS4_STD_MF_X_V2(p, 0); 1272 f->mt[3].x = SS4_STD_MF_X_V2(p, 1); 1273 no_data_x = SS4_MFPACKET_NO_AX; 1274 } 1275 no_data_y = SS4_MFPACKET_NO_AY; 1276 1277 f->mt[2].y = SS4_STD_MF_Y_V2(p, 0); 1278 f->mt[3].y = SS4_STD_MF_Y_V2(p, 1); 1279 } 1280 1281 f->first_mp = 0; 1282 f->is_mp = 1; 1283 1284 if (SS4_IS_5F_DETECTED(p)) { 1285 f->fingers = 5; 1286 } else if (f->mt[3].x == no_data_x && 1287 f->mt[3].y == no_data_y) { 1288 f->mt[3].x = 0; 1289 f->mt[3].y = 0; 1290 f->fingers = 3; 1291 } else { 1292 f->fingers = 4; 1293 } 1294 break; 1295 1296 case SS4_PACKET_ID_STICK: 1297 /* 1298 * x, y, and pressure are decoded in 1299 * alps_process_packet_ss4_v2() 1300 */ 1301 f->first_mp = 0; 1302 f->is_mp = 0; 1303 break; 1304 1305 case SS4_PACKET_ID_IDLE: 1306 default: 1307 memset(f, 0, sizeof(struct alps_fields)); 1308 break; 1309 } 1310 1311 /* handle buttons */ 1312 if (pkt_id == SS4_PACKET_ID_STICK) { 1313 f->ts_left = !!(SS4_BTN_V2(p) & 0x01); 1314 f->ts_right = !!(SS4_BTN_V2(p) & 0x02); 1315 f->ts_middle = !!(SS4_BTN_V2(p) & 0x04); 1316 } else { 1317 f->left = !!(SS4_BTN_V2(p) & 0x01); 1318 if (!(priv->flags & ALPS_BUTTONPAD)) { 1319 f->right = !!(SS4_BTN_V2(p) & 0x02); 1320 f->middle = !!(SS4_BTN_V2(p) & 0x04); 1321 } 1322 } 1323 1324 return 0; 1325 } 1326 1327 static void alps_process_packet_ss4_v2(struct psmouse *psmouse) 1328 { 1329 struct alps_data *priv = psmouse->private; 1330 unsigned char *packet = psmouse->packet; 1331 struct input_dev *dev = psmouse->dev; 1332 struct input_dev *dev2 = priv->dev2; 1333 struct alps_fields *f = &priv->f; 1334 1335 memset(f, 0, sizeof(struct alps_fields)); 1336 priv->decode_fields(f, packet, psmouse); 1337 if (priv->multi_packet) { 1338 /* 1339 * Sometimes the first packet will indicate a multi-packet 1340 * sequence, but sometimes the next multi-packet would not 1341 * come. Check for this, and when it happens process the 1342 * position packet as usual. 1343 */ 1344 if (f->is_mp) { 1345 /* Now process the 1st packet */ 1346 priv->decode_fields(f, priv->multi_data, psmouse); 1347 } else { 1348 priv->multi_packet = 0; 1349 } 1350 } 1351 1352 /* 1353 * "f.is_mp" would always be '0' after merging the 1st and 2nd packet. 1354 * When it is set, it means 2nd packet comes without 1st packet come. 1355 */ 1356 if (f->is_mp) 1357 return; 1358 1359 /* Save the first packet */ 1360 if (!priv->multi_packet && f->first_mp) { 1361 priv->multi_packet = 1; 1362 memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); 1363 return; 1364 } 1365 1366 priv->multi_packet = 0; 1367 1368 /* Report trackstick */ 1369 if (alps_get_pkt_id_ss4_v2(packet) == SS4_PACKET_ID_STICK) { 1370 if (!(priv->flags & ALPS_DUALPOINT)) { 1371 psmouse_warn(psmouse, 1372 "Rejected trackstick packet from non DualPoint device"); 1373 return; 1374 } 1375 1376 input_report_rel(dev2, REL_X, SS4_TS_X_V2(packet)); 1377 input_report_rel(dev2, REL_Y, SS4_TS_Y_V2(packet)); 1378 input_report_abs(dev2, ABS_PRESSURE, SS4_TS_Z_V2(packet)); 1379 1380 input_report_key(dev2, BTN_LEFT, f->ts_left); 1381 input_report_key(dev2, BTN_RIGHT, f->ts_right); 1382 input_report_key(dev2, BTN_MIDDLE, f->ts_middle); 1383 1384 input_sync(dev2); 1385 return; 1386 } 1387 1388 /* Report touchpad */ 1389 alps_report_mt_data(psmouse, (f->fingers <= 4) ? f->fingers : 4); 1390 1391 input_mt_report_finger_count(dev, f->fingers); 1392 1393 input_report_key(dev, BTN_LEFT, f->left); 1394 input_report_key(dev, BTN_RIGHT, f->right); 1395 input_report_key(dev, BTN_MIDDLE, f->middle); 1396 1397 input_report_abs(dev, ABS_PRESSURE, f->pressure); 1398 input_sync(dev); 1399 } 1400 1401 static bool alps_is_valid_package_ss4_v2(struct psmouse *psmouse) 1402 { 1403 if (psmouse->pktcnt == 4 && ((psmouse->packet[3] & 0x08) != 0x08)) 1404 return false; 1405 if (psmouse->pktcnt == 6 && ((psmouse->packet[5] & 0x10) != 0x0)) 1406 return false; 1407 return true; 1408 } 1409 1410 static DEFINE_MUTEX(alps_mutex); 1411 1412 static void alps_register_bare_ps2_mouse(struct work_struct *work) 1413 { 1414 struct alps_data *priv = 1415 container_of(work, struct alps_data, dev3_register_work.work); 1416 struct psmouse *psmouse = priv->psmouse; 1417 struct input_dev *dev3; 1418 int error = 0; 1419 1420 mutex_lock(&alps_mutex); 1421 1422 if (priv->dev3) 1423 goto out; 1424 1425 dev3 = input_allocate_device(); 1426 if (!dev3) { 1427 psmouse_err(psmouse, "failed to allocate secondary device\n"); 1428 error = -ENOMEM; 1429 goto out; 1430 } 1431 1432 snprintf(priv->phys3, sizeof(priv->phys3), "%s/%s", 1433 psmouse->ps2dev.serio->phys, 1434 (priv->dev2 ? "input2" : "input1")); 1435 dev3->phys = priv->phys3; 1436 1437 /* 1438 * format of input device name is: "protocol vendor name" 1439 * see function psmouse_switch_protocol() in psmouse-base.c 1440 */ 1441 dev3->name = "PS/2 ALPS Mouse"; 1442 1443 dev3->id.bustype = BUS_I8042; 1444 dev3->id.vendor = 0x0002; 1445 dev3->id.product = PSMOUSE_PS2; 1446 dev3->id.version = 0x0000; 1447 dev3->dev.parent = &psmouse->ps2dev.serio->dev; 1448 1449 input_set_capability(dev3, EV_REL, REL_X); 1450 input_set_capability(dev3, EV_REL, REL_Y); 1451 input_set_capability(dev3, EV_KEY, BTN_LEFT); 1452 input_set_capability(dev3, EV_KEY, BTN_RIGHT); 1453 input_set_capability(dev3, EV_KEY, BTN_MIDDLE); 1454 1455 __set_bit(INPUT_PROP_POINTER, dev3->propbit); 1456 1457 error = input_register_device(dev3); 1458 if (error) { 1459 psmouse_err(psmouse, 1460 "failed to register secondary device: %d\n", 1461 error); 1462 input_free_device(dev3); 1463 goto out; 1464 } 1465 1466 priv->dev3 = dev3; 1467 1468 out: 1469 /* 1470 * Save the error code so that we can detect that we 1471 * already tried to create the device. 1472 */ 1473 if (error) 1474 priv->dev3 = ERR_PTR(error); 1475 1476 mutex_unlock(&alps_mutex); 1477 } 1478 1479 static void alps_report_bare_ps2_packet(struct psmouse *psmouse, 1480 unsigned char packet[], 1481 bool report_buttons) 1482 { 1483 struct alps_data *priv = psmouse->private; 1484 struct input_dev *dev, *dev2 = NULL; 1485 1486 /* Figure out which device to use to report the bare packet */ 1487 if (priv->proto_version == ALPS_PROTO_V2 && 1488 (priv->flags & ALPS_DUALPOINT)) { 1489 /* On V2 devices the DualPoint Stick reports bare packets */ 1490 dev = priv->dev2; 1491 dev2 = psmouse->dev; 1492 } else if (unlikely(IS_ERR_OR_NULL(priv->dev3))) { 1493 /* Register dev3 mouse if we received PS/2 packet first time */ 1494 if (!IS_ERR(priv->dev3)) 1495 psmouse_queue_work(psmouse, &priv->dev3_register_work, 1496 0); 1497 return; 1498 } else { 1499 dev = priv->dev3; 1500 } 1501 1502 if (report_buttons) 1503 alps_report_buttons(dev, dev2, 1504 packet[0] & 1, packet[0] & 2, packet[0] & 4); 1505 1506 input_report_rel(dev, REL_X, 1507 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0); 1508 input_report_rel(dev, REL_Y, 1509 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0); 1510 1511 input_sync(dev); 1512 } 1513 1514 static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse) 1515 { 1516 struct alps_data *priv = psmouse->private; 1517 1518 if (psmouse->pktcnt < 6) 1519 return PSMOUSE_GOOD_DATA; 1520 1521 if (psmouse->pktcnt == 6) { 1522 /* 1523 * Start a timer to flush the packet if it ends up last 1524 * 6-byte packet in the stream. Timer needs to fire 1525 * psmouse core times out itself. 20 ms should be enough 1526 * to decide if we are getting more data or not. 1527 */ 1528 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20)); 1529 return PSMOUSE_GOOD_DATA; 1530 } 1531 1532 del_timer(&priv->timer); 1533 1534 if (psmouse->packet[6] & 0x80) { 1535 1536 /* 1537 * Highest bit is set - that means we either had 1538 * complete ALPS packet and this is start of the 1539 * next packet or we got garbage. 1540 */ 1541 1542 if (((psmouse->packet[3] | 1543 psmouse->packet[4] | 1544 psmouse->packet[5]) & 0x80) || 1545 (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) { 1546 psmouse_dbg(psmouse, 1547 "refusing packet %4ph (suspected interleaved ps/2)\n", 1548 psmouse->packet + 3); 1549 return PSMOUSE_BAD_DATA; 1550 } 1551 1552 priv->process_packet(psmouse); 1553 1554 /* Continue with the next packet */ 1555 psmouse->packet[0] = psmouse->packet[6]; 1556 psmouse->pktcnt = 1; 1557 1558 } else { 1559 1560 /* 1561 * High bit is 0 - that means that we indeed got a PS/2 1562 * packet in the middle of ALPS packet. 1563 * 1564 * There is also possibility that we got 6-byte ALPS 1565 * packet followed by 3-byte packet from trackpoint. We 1566 * can not distinguish between these 2 scenarios but 1567 * because the latter is unlikely to happen in course of 1568 * normal operation (user would need to press all 1569 * buttons on the pad and start moving trackpoint 1570 * without touching the pad surface) we assume former. 1571 * Even if we are wrong the wost thing that would happen 1572 * the cursor would jump but we should not get protocol 1573 * de-synchronization. 1574 */ 1575 1576 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3], 1577 false); 1578 1579 /* 1580 * Continue with the standard ALPS protocol handling, 1581 * but make sure we won't process it as an interleaved 1582 * packet again, which may happen if all buttons are 1583 * pressed. To avoid this let's reset the 4th bit which 1584 * is normally 1. 1585 */ 1586 psmouse->packet[3] = psmouse->packet[6] & 0xf7; 1587 psmouse->pktcnt = 4; 1588 } 1589 1590 return PSMOUSE_GOOD_DATA; 1591 } 1592 1593 static void alps_flush_packet(struct timer_list *t) 1594 { 1595 struct alps_data *priv = from_timer(priv, t, timer); 1596 struct psmouse *psmouse = priv->psmouse; 1597 1598 serio_pause_rx(psmouse->ps2dev.serio); 1599 1600 if (psmouse->pktcnt == psmouse->pktsize) { 1601 1602 /* 1603 * We did not any more data in reasonable amount of time. 1604 * Validate the last 3 bytes and process as a standard 1605 * ALPS packet. 1606 */ 1607 if ((psmouse->packet[3] | 1608 psmouse->packet[4] | 1609 psmouse->packet[5]) & 0x80) { 1610 psmouse_dbg(psmouse, 1611 "refusing packet %3ph (suspected interleaved ps/2)\n", 1612 psmouse->packet + 3); 1613 } else { 1614 priv->process_packet(psmouse); 1615 } 1616 psmouse->pktcnt = 0; 1617 } 1618 1619 serio_continue_rx(psmouse->ps2dev.serio); 1620 } 1621 1622 static psmouse_ret_t alps_process_byte(struct psmouse *psmouse) 1623 { 1624 struct alps_data *priv = psmouse->private; 1625 1626 /* 1627 * Check if we are dealing with a bare PS/2 packet, presumably from 1628 * a device connected to the external PS/2 port. Because bare PS/2 1629 * protocol does not have enough constant bits to self-synchronize 1630 * properly we only do this if the device is fully synchronized. 1631 * Can not distinguish V8's first byte from PS/2 packet's 1632 */ 1633 if (priv->proto_version != ALPS_PROTO_V8 && 1634 !psmouse->out_of_sync_cnt && 1635 (psmouse->packet[0] & 0xc8) == 0x08) { 1636 1637 if (psmouse->pktcnt == 3) { 1638 alps_report_bare_ps2_packet(psmouse, psmouse->packet, 1639 true); 1640 return PSMOUSE_FULL_PACKET; 1641 } 1642 return PSMOUSE_GOOD_DATA; 1643 } 1644 1645 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */ 1646 1647 if ((priv->flags & ALPS_PS2_INTERLEAVED) && 1648 psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) { 1649 return alps_handle_interleaved_ps2(psmouse); 1650 } 1651 1652 if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) { 1653 psmouse_dbg(psmouse, 1654 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n", 1655 psmouse->packet[0], priv->mask0, priv->byte0); 1656 return PSMOUSE_BAD_DATA; 1657 } 1658 1659 /* Bytes 2 - pktsize should have 0 in the highest bit */ 1660 if (priv->proto_version < ALPS_PROTO_V5 && 1661 psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize && 1662 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) { 1663 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1664 psmouse->pktcnt - 1, 1665 psmouse->packet[psmouse->pktcnt - 1]); 1666 1667 if (priv->proto_version == ALPS_PROTO_V3_RUSHMORE && 1668 psmouse->pktcnt == psmouse->pktsize) { 1669 /* 1670 * Some Dell boxes, such as Latitude E6440 or E7440 1671 * with closed lid, quite often smash last byte of 1672 * otherwise valid packet with 0xff. Given that the 1673 * next packet is very likely to be valid let's 1674 * report PSMOUSE_FULL_PACKET but not process data, 1675 * rather than reporting PSMOUSE_BAD_DATA and 1676 * filling the logs. 1677 */ 1678 return PSMOUSE_FULL_PACKET; 1679 } 1680 1681 return PSMOUSE_BAD_DATA; 1682 } 1683 1684 if ((priv->proto_version == ALPS_PROTO_V7 && 1685 !alps_is_valid_package_v7(psmouse)) || 1686 (priv->proto_version == ALPS_PROTO_V8 && 1687 !alps_is_valid_package_ss4_v2(psmouse))) { 1688 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1689 psmouse->pktcnt - 1, 1690 psmouse->packet[psmouse->pktcnt - 1]); 1691 return PSMOUSE_BAD_DATA; 1692 } 1693 1694 if (psmouse->pktcnt == psmouse->pktsize) { 1695 priv->process_packet(psmouse); 1696 return PSMOUSE_FULL_PACKET; 1697 } 1698 1699 return PSMOUSE_GOOD_DATA; 1700 } 1701 1702 static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble) 1703 { 1704 struct ps2dev *ps2dev = &psmouse->ps2dev; 1705 struct alps_data *priv = psmouse->private; 1706 int command; 1707 unsigned char *param; 1708 unsigned char dummy[4]; 1709 1710 BUG_ON(nibble > 0xf); 1711 1712 command = priv->nibble_commands[nibble].command; 1713 param = (command & 0x0f00) ? 1714 dummy : (unsigned char *)&priv->nibble_commands[nibble].data; 1715 1716 if (ps2_command(ps2dev, param, command)) 1717 return -1; 1718 1719 return 0; 1720 } 1721 1722 static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr) 1723 { 1724 struct ps2dev *ps2dev = &psmouse->ps2dev; 1725 struct alps_data *priv = psmouse->private; 1726 int i, nibble; 1727 1728 if (ps2_command(ps2dev, NULL, priv->addr_command)) 1729 return -1; 1730 1731 for (i = 12; i >= 0; i -= 4) { 1732 nibble = (addr >> i) & 0xf; 1733 if (alps_command_mode_send_nibble(psmouse, nibble)) 1734 return -1; 1735 } 1736 1737 return 0; 1738 } 1739 1740 static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1741 { 1742 struct ps2dev *ps2dev = &psmouse->ps2dev; 1743 unsigned char param[4]; 1744 1745 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1746 return -1; 1747 1748 /* 1749 * The address being read is returned in the first two bytes 1750 * of the result. Check that this address matches the expected 1751 * address. 1752 */ 1753 if (addr != ((param[0] << 8) | param[1])) 1754 return -1; 1755 1756 return param[2]; 1757 } 1758 1759 static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1760 { 1761 if (alps_command_mode_set_addr(psmouse, addr)) 1762 return -1; 1763 return __alps_command_mode_read_reg(psmouse, addr); 1764 } 1765 1766 static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value) 1767 { 1768 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf)) 1769 return -1; 1770 if (alps_command_mode_send_nibble(psmouse, value & 0xf)) 1771 return -1; 1772 return 0; 1773 } 1774 1775 static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr, 1776 u8 value) 1777 { 1778 if (alps_command_mode_set_addr(psmouse, addr)) 1779 return -1; 1780 return __alps_command_mode_write_reg(psmouse, value); 1781 } 1782 1783 static int alps_rpt_cmd(struct psmouse *psmouse, int init_command, 1784 int repeated_command, unsigned char *param) 1785 { 1786 struct ps2dev *ps2dev = &psmouse->ps2dev; 1787 1788 param[0] = 0; 1789 if (init_command && ps2_command(ps2dev, param, init_command)) 1790 return -EIO; 1791 1792 if (ps2_command(ps2dev, NULL, repeated_command) || 1793 ps2_command(ps2dev, NULL, repeated_command) || 1794 ps2_command(ps2dev, NULL, repeated_command)) 1795 return -EIO; 1796 1797 param[0] = param[1] = param[2] = 0xff; 1798 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1799 return -EIO; 1800 1801 psmouse_dbg(psmouse, "%2.2X report: %3ph\n", 1802 repeated_command, param); 1803 return 0; 1804 } 1805 1806 static bool alps_check_valid_firmware_id(unsigned char id[]) 1807 { 1808 if (id[0] == 0x73) 1809 return true; 1810 1811 if (id[0] == 0x88 && 1812 (id[1] == 0x07 || 1813 id[1] == 0x08 || 1814 (id[1] & 0xf0) == 0xb0 || 1815 (id[1] & 0xf0) == 0xc0)) { 1816 return true; 1817 } 1818 1819 return false; 1820 } 1821 1822 static int alps_enter_command_mode(struct psmouse *psmouse) 1823 { 1824 unsigned char param[4]; 1825 1826 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) { 1827 psmouse_err(psmouse, "failed to enter command mode\n"); 1828 return -1; 1829 } 1830 1831 if (!alps_check_valid_firmware_id(param)) { 1832 psmouse_dbg(psmouse, 1833 "unknown response while entering command mode\n"); 1834 return -1; 1835 } 1836 return 0; 1837 } 1838 1839 static inline int alps_exit_command_mode(struct psmouse *psmouse) 1840 { 1841 struct ps2dev *ps2dev = &psmouse->ps2dev; 1842 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) 1843 return -1; 1844 return 0; 1845 } 1846 1847 /* 1848 * For DualPoint devices select the device that should respond to 1849 * subsequent commands. It looks like glidepad is behind stickpointer, 1850 * I'd thought it would be other way around... 1851 */ 1852 static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable) 1853 { 1854 struct ps2dev *ps2dev = &psmouse->ps2dev; 1855 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11; 1856 1857 if (ps2_command(ps2dev, NULL, cmd) || 1858 ps2_command(ps2dev, NULL, cmd) || 1859 ps2_command(ps2dev, NULL, cmd) || 1860 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1861 return -1; 1862 1863 /* we may get 3 more bytes, just ignore them */ 1864 ps2_drain(ps2dev, 3, 100); 1865 1866 return 0; 1867 } 1868 1869 static int alps_absolute_mode_v1_v2(struct psmouse *psmouse) 1870 { 1871 struct ps2dev *ps2dev = &psmouse->ps2dev; 1872 1873 /* Try ALPS magic knock - 4 disable before enable */ 1874 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1875 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1876 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1877 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1878 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) 1879 return -1; 1880 1881 /* 1882 * Switch mouse to poll (remote) mode so motion data will not 1883 * get in our way 1884 */ 1885 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL); 1886 } 1887 1888 static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word) 1889 { 1890 int i, nibble; 1891 1892 /* 1893 * b0-b11 are valid bits, send sequence is inverse. 1894 * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1 1895 */ 1896 for (i = 0; i <= 8; i += 4) { 1897 nibble = (word >> i) & 0xf; 1898 if (alps_command_mode_send_nibble(psmouse, nibble)) 1899 return -1; 1900 } 1901 1902 return 0; 1903 } 1904 1905 static int alps_monitor_mode_write_reg(struct psmouse *psmouse, 1906 u16 addr, u16 value) 1907 { 1908 struct ps2dev *ps2dev = &psmouse->ps2dev; 1909 1910 /* 0x0A0 is the command to write the word */ 1911 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) || 1912 alps_monitor_mode_send_word(psmouse, 0x0A0) || 1913 alps_monitor_mode_send_word(psmouse, addr) || 1914 alps_monitor_mode_send_word(psmouse, value) || 1915 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1916 return -1; 1917 1918 return 0; 1919 } 1920 1921 static int alps_monitor_mode(struct psmouse *psmouse, bool enable) 1922 { 1923 struct ps2dev *ps2dev = &psmouse->ps2dev; 1924 1925 if (enable) { 1926 /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */ 1927 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 1928 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) || 1929 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1930 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1931 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1932 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1933 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1934 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO)) 1935 return -1; 1936 } else { 1937 /* EC to exit monitor mode */ 1938 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP)) 1939 return -1; 1940 } 1941 1942 return 0; 1943 } 1944 1945 static int alps_absolute_mode_v6(struct psmouse *psmouse) 1946 { 1947 u16 reg_val = 0x181; 1948 int ret = -1; 1949 1950 /* enter monitor mode, to write the register */ 1951 if (alps_monitor_mode(psmouse, true)) 1952 return -1; 1953 1954 ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val); 1955 1956 if (alps_monitor_mode(psmouse, false)) 1957 ret = -1; 1958 1959 return ret; 1960 } 1961 1962 static int alps_get_status(struct psmouse *psmouse, char *param) 1963 { 1964 /* Get status: 0xF5 0xF5 0xF5 0xE9 */ 1965 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param)) 1966 return -1; 1967 1968 return 0; 1969 } 1970 1971 /* 1972 * Turn touchpad tapping on or off. The sequences are: 1973 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable, 1974 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable. 1975 * My guess that 0xE9 (GetInfo) is here as a sync point. 1976 * For models that also have stickpointer (DualPoints) its tapping 1977 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but 1978 * we don't fiddle with it. 1979 */ 1980 static int alps_tap_mode(struct psmouse *psmouse, int enable) 1981 { 1982 struct ps2dev *ps2dev = &psmouse->ps2dev; 1983 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES; 1984 unsigned char tap_arg = enable ? 0x0A : 0x00; 1985 unsigned char param[4]; 1986 1987 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) || 1988 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1989 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1990 ps2_command(ps2dev, &tap_arg, cmd)) 1991 return -1; 1992 1993 if (alps_get_status(psmouse, param)) 1994 return -1; 1995 1996 return 0; 1997 } 1998 1999 /* 2000 * alps_poll() - poll the touchpad for current motion packet. 2001 * Used in resync. 2002 */ 2003 static int alps_poll(struct psmouse *psmouse) 2004 { 2005 struct alps_data *priv = psmouse->private; 2006 unsigned char buf[sizeof(psmouse->packet)]; 2007 bool poll_failed; 2008 2009 if (priv->flags & ALPS_PASS) 2010 alps_passthrough_mode_v2(psmouse, true); 2011 2012 poll_failed = ps2_command(&psmouse->ps2dev, buf, 2013 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0; 2014 2015 if (priv->flags & ALPS_PASS) 2016 alps_passthrough_mode_v2(psmouse, false); 2017 2018 if (poll_failed || (buf[0] & priv->mask0) != priv->byte0) 2019 return -1; 2020 2021 if ((psmouse->badbyte & 0xc8) == 0x08) { 2022 /* 2023 * Poll the track stick ... 2024 */ 2025 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8))) 2026 return -1; 2027 } 2028 2029 memcpy(psmouse->packet, buf, sizeof(buf)); 2030 return 0; 2031 } 2032 2033 static int alps_hw_init_v1_v2(struct psmouse *psmouse) 2034 { 2035 struct alps_data *priv = psmouse->private; 2036 2037 if ((priv->flags & ALPS_PASS) && 2038 alps_passthrough_mode_v2(psmouse, true)) { 2039 return -1; 2040 } 2041 2042 if (alps_tap_mode(psmouse, true)) { 2043 psmouse_warn(psmouse, "Failed to enable hardware tapping\n"); 2044 return -1; 2045 } 2046 2047 if (alps_absolute_mode_v1_v2(psmouse)) { 2048 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 2049 return -1; 2050 } 2051 2052 if ((priv->flags & ALPS_PASS) && 2053 alps_passthrough_mode_v2(psmouse, false)) { 2054 return -1; 2055 } 2056 2057 /* ALPS needs stream mode, otherwise it won't report any data */ 2058 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) { 2059 psmouse_err(psmouse, "Failed to enable stream mode\n"); 2060 return -1; 2061 } 2062 2063 return 0; 2064 } 2065 2066 static int alps_hw_init_v6(struct psmouse *psmouse) 2067 { 2068 unsigned char param[2] = {0xC8, 0x14}; 2069 2070 /* Enter passthrough mode to let trackpoint enter 6byte raw mode */ 2071 if (alps_passthrough_mode_v2(psmouse, true)) 2072 return -1; 2073 2074 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2075 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2076 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2077 ps2_command(&psmouse->ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2078 ps2_command(&psmouse->ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 2079 return -1; 2080 2081 if (alps_passthrough_mode_v2(psmouse, false)) 2082 return -1; 2083 2084 if (alps_absolute_mode_v6(psmouse)) { 2085 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 2086 return -1; 2087 } 2088 2089 return 0; 2090 } 2091 2092 /* 2093 * Enable or disable passthrough mode to the trackstick. 2094 */ 2095 static int alps_passthrough_mode_v3(struct psmouse *psmouse, 2096 int reg_base, bool enable) 2097 { 2098 int reg_val, ret = -1; 2099 2100 if (alps_enter_command_mode(psmouse)) 2101 return -1; 2102 2103 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008); 2104 if (reg_val == -1) 2105 goto error; 2106 2107 if (enable) 2108 reg_val |= 0x01; 2109 else 2110 reg_val &= ~0x01; 2111 2112 ret = __alps_command_mode_write_reg(psmouse, reg_val); 2113 2114 error: 2115 if (alps_exit_command_mode(psmouse)) 2116 ret = -1; 2117 return ret; 2118 } 2119 2120 /* Must be in command mode when calling this function */ 2121 static int alps_absolute_mode_v3(struct psmouse *psmouse) 2122 { 2123 int reg_val; 2124 2125 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 2126 if (reg_val == -1) 2127 return -1; 2128 2129 reg_val |= 0x06; 2130 if (__alps_command_mode_write_reg(psmouse, reg_val)) 2131 return -1; 2132 2133 return 0; 2134 } 2135 2136 static int alps_probe_trackstick_v3_v7(struct psmouse *psmouse, int reg_base) 2137 { 2138 int ret = -EIO, reg_val; 2139 2140 if (alps_enter_command_mode(psmouse)) 2141 goto error; 2142 2143 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08); 2144 if (reg_val == -1) 2145 goto error; 2146 2147 /* bit 7: trackstick is present */ 2148 ret = reg_val & 0x80 ? 0 : -ENODEV; 2149 2150 error: 2151 alps_exit_command_mode(psmouse); 2152 return ret; 2153 } 2154 2155 static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base) 2156 { 2157 struct ps2dev *ps2dev = &psmouse->ps2dev; 2158 int ret = 0; 2159 unsigned char param[4]; 2160 2161 if (alps_passthrough_mode_v3(psmouse, reg_base, true)) 2162 return -EIO; 2163 2164 /* 2165 * E7 report for the trackstick 2166 * 2167 * There have been reports of failures to seem to trace back 2168 * to the above trackstick check failing. When these occur 2169 * this E7 report fails, so when that happens we continue 2170 * with the assumption that there isn't a trackstick after 2171 * all. 2172 */ 2173 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) { 2174 psmouse_warn(psmouse, "Failed to initialize trackstick (E7 report failed)\n"); 2175 ret = -ENODEV; 2176 } else { 2177 psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param); 2178 2179 /* 2180 * Not sure what this does, but it is absolutely 2181 * essential. Without it, the touchpad does not 2182 * work at all and the trackstick just emits normal 2183 * PS/2 packets. 2184 */ 2185 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2186 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2187 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2188 alps_command_mode_send_nibble(psmouse, 0x9) || 2189 alps_command_mode_send_nibble(psmouse, 0x4)) { 2190 psmouse_err(psmouse, 2191 "Error sending magic E6 sequence\n"); 2192 ret = -EIO; 2193 goto error; 2194 } 2195 2196 /* 2197 * This ensures the trackstick packets are in the format 2198 * supported by this driver. If bit 1 isn't set the packet 2199 * format is different. 2200 */ 2201 if (alps_enter_command_mode(psmouse) || 2202 alps_command_mode_write_reg(psmouse, 2203 reg_base + 0x08, 0x82) || 2204 alps_exit_command_mode(psmouse)) 2205 ret = -EIO; 2206 } 2207 2208 error: 2209 if (alps_passthrough_mode_v3(psmouse, reg_base, false)) 2210 ret = -EIO; 2211 2212 return ret; 2213 } 2214 2215 static int alps_hw_init_v3(struct psmouse *psmouse) 2216 { 2217 struct alps_data *priv = psmouse->private; 2218 struct ps2dev *ps2dev = &psmouse->ps2dev; 2219 int reg_val; 2220 unsigned char param[4]; 2221 2222 if ((priv->flags & ALPS_DUALPOINT) && 2223 alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO) 2224 goto error; 2225 2226 if (alps_enter_command_mode(psmouse) || 2227 alps_absolute_mode_v3(psmouse)) { 2228 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 2229 goto error; 2230 } 2231 2232 reg_val = alps_command_mode_read_reg(psmouse, 0x0006); 2233 if (reg_val == -1) 2234 goto error; 2235 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 2236 goto error; 2237 2238 reg_val = alps_command_mode_read_reg(psmouse, 0x0007); 2239 if (reg_val == -1) 2240 goto error; 2241 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 2242 goto error; 2243 2244 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1) 2245 goto error; 2246 if (__alps_command_mode_write_reg(psmouse, 0x04)) 2247 goto error; 2248 2249 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1) 2250 goto error; 2251 if (__alps_command_mode_write_reg(psmouse, 0x03)) 2252 goto error; 2253 2254 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1) 2255 goto error; 2256 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03)) 2257 goto error; 2258 2259 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1) 2260 goto error; 2261 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04)) 2262 goto error; 2263 2264 alps_exit_command_mode(psmouse); 2265 2266 /* Set rate and enable data reporting */ 2267 param[0] = 0x64; 2268 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 2269 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 2270 psmouse_err(psmouse, "Failed to enable data reporting\n"); 2271 return -1; 2272 } 2273 2274 return 0; 2275 2276 error: 2277 /* 2278 * Leaving the touchpad in command mode will essentially render 2279 * it unusable until the machine reboots, so exit it here just 2280 * to be safe 2281 */ 2282 alps_exit_command_mode(psmouse); 2283 return -1; 2284 } 2285 2286 static int alps_get_v3_v7_resolution(struct psmouse *psmouse, int reg_pitch) 2287 { 2288 int reg, x_pitch, y_pitch, x_electrode, y_electrode, x_phys, y_phys; 2289 struct alps_data *priv = psmouse->private; 2290 2291 reg = alps_command_mode_read_reg(psmouse, reg_pitch); 2292 if (reg < 0) 2293 return reg; 2294 2295 x_pitch = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ 2296 x_pitch = 50 + 2 * x_pitch; /* In 0.1 mm units */ 2297 2298 y_pitch = (char)reg >> 4; /* sign extend upper 4 bits */ 2299 y_pitch = 36 + 2 * y_pitch; /* In 0.1 mm units */ 2300 2301 reg = alps_command_mode_read_reg(psmouse, reg_pitch + 1); 2302 if (reg < 0) 2303 return reg; 2304 2305 x_electrode = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ 2306 x_electrode = 17 + x_electrode; 2307 2308 y_electrode = (char)reg >> 4; /* sign extend upper 4 bits */ 2309 y_electrode = 13 + y_electrode; 2310 2311 x_phys = x_pitch * (x_electrode - 1); /* In 0.1 mm units */ 2312 y_phys = y_pitch * (y_electrode - 1); /* In 0.1 mm units */ 2313 2314 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ 2315 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ 2316 2317 psmouse_dbg(psmouse, 2318 "pitch %dx%d num-electrodes %dx%d physical size %dx%d mm res %dx%d\n", 2319 x_pitch, y_pitch, x_electrode, y_electrode, 2320 x_phys / 10, y_phys / 10, priv->x_res, priv->y_res); 2321 2322 return 0; 2323 } 2324 2325 static int alps_hw_init_rushmore_v3(struct psmouse *psmouse) 2326 { 2327 struct alps_data *priv = psmouse->private; 2328 struct ps2dev *ps2dev = &psmouse->ps2dev; 2329 int reg_val, ret = -1; 2330 2331 if (priv->flags & ALPS_DUALPOINT) { 2332 reg_val = alps_setup_trackstick_v3(psmouse, 2333 ALPS_REG_BASE_RUSHMORE); 2334 if (reg_val == -EIO) 2335 goto error; 2336 } 2337 2338 if (alps_enter_command_mode(psmouse) || 2339 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 || 2340 alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00)) 2341 goto error; 2342 2343 if (alps_get_v3_v7_resolution(psmouse, 0xc2da)) 2344 goto error; 2345 2346 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6); 2347 if (reg_val == -1) 2348 goto error; 2349 if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd)) 2350 goto error; 2351 2352 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 2353 goto error; 2354 2355 /* enter absolute mode */ 2356 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 2357 if (reg_val == -1) 2358 goto error; 2359 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 2360 goto error; 2361 2362 alps_exit_command_mode(psmouse); 2363 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2364 2365 error: 2366 alps_exit_command_mode(psmouse); 2367 return ret; 2368 } 2369 2370 /* Must be in command mode when calling this function */ 2371 static int alps_absolute_mode_v4(struct psmouse *psmouse) 2372 { 2373 int reg_val; 2374 2375 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 2376 if (reg_val == -1) 2377 return -1; 2378 2379 reg_val |= 0x02; 2380 if (__alps_command_mode_write_reg(psmouse, reg_val)) 2381 return -1; 2382 2383 return 0; 2384 } 2385 2386 static int alps_hw_init_v4(struct psmouse *psmouse) 2387 { 2388 struct ps2dev *ps2dev = &psmouse->ps2dev; 2389 unsigned char param[4]; 2390 2391 if (alps_enter_command_mode(psmouse)) 2392 goto error; 2393 2394 if (alps_absolute_mode_v4(psmouse)) { 2395 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 2396 goto error; 2397 } 2398 2399 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c)) 2400 goto error; 2401 2402 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03)) 2403 goto error; 2404 2405 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03)) 2406 goto error; 2407 2408 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15)) 2409 goto error; 2410 2411 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01)) 2412 goto error; 2413 2414 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03)) 2415 goto error; 2416 2417 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03)) 2418 goto error; 2419 2420 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03)) 2421 goto error; 2422 2423 alps_exit_command_mode(psmouse); 2424 2425 /* 2426 * This sequence changes the output from a 9-byte to an 2427 * 8-byte format. All the same data seems to be present, 2428 * just in a more compact format. 2429 */ 2430 param[0] = 0xc8; 2431 param[1] = 0x64; 2432 param[2] = 0x50; 2433 if (ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2434 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE) || 2435 ps2_command(ps2dev, ¶m[2], PSMOUSE_CMD_SETRATE) || 2436 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) 2437 return -1; 2438 2439 /* Set rate and enable data reporting */ 2440 param[0] = 0x64; 2441 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 2442 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 2443 psmouse_err(psmouse, "Failed to enable data reporting\n"); 2444 return -1; 2445 } 2446 2447 return 0; 2448 2449 error: 2450 /* 2451 * Leaving the touchpad in command mode will essentially render 2452 * it unusable until the machine reboots, so exit it here just 2453 * to be safe 2454 */ 2455 alps_exit_command_mode(psmouse); 2456 return -1; 2457 } 2458 2459 static int alps_get_otp_values_ss4_v2(struct psmouse *psmouse, 2460 unsigned char index, unsigned char otp[]) 2461 { 2462 struct ps2dev *ps2dev = &psmouse->ps2dev; 2463 2464 switch (index) { 2465 case 0: 2466 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2467 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2468 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) 2469 return -1; 2470 2471 break; 2472 2473 case 1: 2474 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2475 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2476 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) 2477 return -1; 2478 2479 break; 2480 } 2481 2482 return 0; 2483 } 2484 2485 static int alps_update_device_area_ss4_v2(unsigned char otp[][4], 2486 struct alps_data *priv) 2487 { 2488 int num_x_electrode; 2489 int num_y_electrode; 2490 int x_pitch, y_pitch, x_phys, y_phys; 2491 2492 if (IS_SS4PLUS_DEV(priv->dev_id)) { 2493 num_x_electrode = 2494 SS4PLUS_NUMSENSOR_XOFFSET + (otp[0][2] & 0x0F); 2495 num_y_electrode = 2496 SS4PLUS_NUMSENSOR_YOFFSET + ((otp[0][2] >> 4) & 0x0F); 2497 2498 priv->x_max = 2499 (num_x_electrode - 1) * SS4PLUS_COUNT_PER_ELECTRODE; 2500 priv->y_max = 2501 (num_y_electrode - 1) * SS4PLUS_COUNT_PER_ELECTRODE; 2502 2503 x_pitch = (otp[0][1] & 0x0F) + SS4PLUS_MIN_PITCH_MM; 2504 y_pitch = ((otp[0][1] >> 4) & 0x0F) + SS4PLUS_MIN_PITCH_MM; 2505 2506 } else { 2507 num_x_electrode = 2508 SS4_NUMSENSOR_XOFFSET + (otp[1][0] & 0x0F); 2509 num_y_electrode = 2510 SS4_NUMSENSOR_YOFFSET + ((otp[1][0] >> 4) & 0x0F); 2511 2512 priv->x_max = 2513 (num_x_electrode - 1) * SS4_COUNT_PER_ELECTRODE; 2514 priv->y_max = 2515 (num_y_electrode - 1) * SS4_COUNT_PER_ELECTRODE; 2516 2517 x_pitch = ((otp[1][2] >> 2) & 0x07) + SS4_MIN_PITCH_MM; 2518 y_pitch = ((otp[1][2] >> 5) & 0x07) + SS4_MIN_PITCH_MM; 2519 } 2520 2521 x_phys = x_pitch * (num_x_electrode - 1); /* In 0.1 mm units */ 2522 y_phys = y_pitch * (num_y_electrode - 1); /* In 0.1 mm units */ 2523 2524 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ 2525 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ 2526 2527 return 0; 2528 } 2529 2530 static int alps_update_btn_info_ss4_v2(unsigned char otp[][4], 2531 struct alps_data *priv) 2532 { 2533 unsigned char is_btnless; 2534 2535 if (IS_SS4PLUS_DEV(priv->dev_id)) 2536 is_btnless = (otp[1][0] >> 1) & 0x01; 2537 else 2538 is_btnless = (otp[1][1] >> 3) & 0x01; 2539 2540 if (is_btnless) 2541 priv->flags |= ALPS_BUTTONPAD; 2542 2543 return 0; 2544 } 2545 2546 static int alps_update_dual_info_ss4_v2(unsigned char otp[][4], 2547 struct alps_data *priv) 2548 { 2549 bool is_dual = false; 2550 2551 if (IS_SS4PLUS_DEV(priv->dev_id)) 2552 is_dual = (otp[0][0] >> 4) & 0x01; 2553 2554 if (is_dual) 2555 priv->flags |= ALPS_DUALPOINT | 2556 ALPS_DUALPOINT_WITH_PRESSURE; 2557 2558 return 0; 2559 } 2560 2561 static int alps_set_defaults_ss4_v2(struct psmouse *psmouse, 2562 struct alps_data *priv) 2563 { 2564 unsigned char otp[2][4]; 2565 2566 memset(otp, 0, sizeof(otp)); 2567 2568 if (alps_get_otp_values_ss4_v2(psmouse, 1, &otp[1][0]) || 2569 alps_get_otp_values_ss4_v2(psmouse, 0, &otp[0][0])) 2570 return -1; 2571 2572 alps_update_device_area_ss4_v2(otp, priv); 2573 2574 alps_update_btn_info_ss4_v2(otp, priv); 2575 2576 alps_update_dual_info_ss4_v2(otp, priv); 2577 2578 return 0; 2579 } 2580 2581 static int alps_dolphin_get_device_area(struct psmouse *psmouse, 2582 struct alps_data *priv) 2583 { 2584 struct ps2dev *ps2dev = &psmouse->ps2dev; 2585 unsigned char param[4] = {0}; 2586 int num_x_electrode, num_y_electrode; 2587 2588 if (alps_enter_command_mode(psmouse)) 2589 return -1; 2590 2591 param[0] = 0x0a; 2592 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 2593 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2594 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2595 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2596 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE)) 2597 return -1; 2598 2599 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 2600 return -1; 2601 2602 /* 2603 * Dolphin's sensor line number is not fixed. It can be calculated 2604 * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET. 2605 * Further more, we can get device's x_max and y_max by multiplying 2606 * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE. 2607 * 2608 * e.g. When we get register's sensor_x = 11 & sensor_y = 8, 2609 * real sensor line number X = 11 + 8 = 19, and 2610 * real sensor line number Y = 8 + 1 = 9. 2611 * So, x_max = (19 - 1) * 64 = 1152, and 2612 * y_max = (9 - 1) * 64 = 512. 2613 */ 2614 num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F); 2615 num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F); 2616 priv->x_bits = num_x_electrode; 2617 priv->y_bits = num_y_electrode; 2618 priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2619 priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2620 2621 if (alps_exit_command_mode(psmouse)) 2622 return -1; 2623 2624 return 0; 2625 } 2626 2627 static int alps_hw_init_dolphin_v1(struct psmouse *psmouse) 2628 { 2629 struct ps2dev *ps2dev = &psmouse->ps2dev; 2630 unsigned char param[2]; 2631 2632 /* This is dolphin "v1" as empirically defined by florin9doi */ 2633 param[0] = 0x64; 2634 param[1] = 0x28; 2635 2636 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2637 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2638 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 2639 return -1; 2640 2641 return 0; 2642 } 2643 2644 static int alps_hw_init_v7(struct psmouse *psmouse) 2645 { 2646 struct ps2dev *ps2dev = &psmouse->ps2dev; 2647 int reg_val, ret = -1; 2648 2649 if (alps_enter_command_mode(psmouse) || 2650 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1) 2651 goto error; 2652 2653 if (alps_get_v3_v7_resolution(psmouse, 0xc397)) 2654 goto error; 2655 2656 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 2657 goto error; 2658 2659 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 2660 if (reg_val == -1) 2661 goto error; 2662 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 2663 goto error; 2664 2665 alps_exit_command_mode(psmouse); 2666 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2667 2668 error: 2669 alps_exit_command_mode(psmouse); 2670 return ret; 2671 } 2672 2673 static int alps_hw_init_ss4_v2(struct psmouse *psmouse) 2674 { 2675 struct ps2dev *ps2dev = &psmouse->ps2dev; 2676 char param[2] = {0x64, 0x28}; 2677 int ret = -1; 2678 2679 /* enter absolute mode */ 2680 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2681 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2682 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2683 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) { 2684 goto error; 2685 } 2686 2687 /* T.B.D. Decread noise packet number, delete in the future */ 2688 if (alps_exit_command_mode(psmouse) || 2689 alps_enter_command_mode(psmouse) || 2690 alps_command_mode_write_reg(psmouse, 0x001D, 0x20)) { 2691 goto error; 2692 } 2693 alps_exit_command_mode(psmouse); 2694 2695 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2696 2697 error: 2698 alps_exit_command_mode(psmouse); 2699 return ret; 2700 } 2701 2702 static int alps_set_protocol(struct psmouse *psmouse, 2703 struct alps_data *priv, 2704 const struct alps_protocol_info *protocol) 2705 { 2706 psmouse->private = priv; 2707 2708 timer_setup(&priv->timer, alps_flush_packet, 0); 2709 2710 priv->proto_version = protocol->version; 2711 priv->byte0 = protocol->byte0; 2712 priv->mask0 = protocol->mask0; 2713 priv->flags = protocol->flags; 2714 2715 priv->x_max = 2000; 2716 priv->y_max = 1400; 2717 priv->x_bits = 15; 2718 priv->y_bits = 11; 2719 2720 switch (priv->proto_version) { 2721 case ALPS_PROTO_V1: 2722 case ALPS_PROTO_V2: 2723 priv->hw_init = alps_hw_init_v1_v2; 2724 priv->process_packet = alps_process_packet_v1_v2; 2725 priv->set_abs_params = alps_set_abs_params_st; 2726 priv->x_max = 1023; 2727 priv->y_max = 767; 2728 if (dmi_check_system(alps_dmi_has_separate_stick_buttons)) 2729 priv->flags |= ALPS_STICK_BITS; 2730 break; 2731 2732 case ALPS_PROTO_V3: 2733 priv->hw_init = alps_hw_init_v3; 2734 priv->process_packet = alps_process_packet_v3; 2735 priv->set_abs_params = alps_set_abs_params_semi_mt; 2736 priv->decode_fields = alps_decode_pinnacle; 2737 priv->nibble_commands = alps_v3_nibble_commands; 2738 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2739 2740 if (alps_probe_trackstick_v3_v7(psmouse, 2741 ALPS_REG_BASE_PINNACLE) < 0) 2742 priv->flags &= ~ALPS_DUALPOINT; 2743 2744 break; 2745 2746 case ALPS_PROTO_V3_RUSHMORE: 2747 priv->hw_init = alps_hw_init_rushmore_v3; 2748 priv->process_packet = alps_process_packet_v3; 2749 priv->set_abs_params = alps_set_abs_params_semi_mt; 2750 priv->decode_fields = alps_decode_rushmore; 2751 priv->nibble_commands = alps_v3_nibble_commands; 2752 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2753 priv->x_bits = 16; 2754 priv->y_bits = 12; 2755 2756 if (alps_probe_trackstick_v3_v7(psmouse, 2757 ALPS_REG_BASE_RUSHMORE) < 0) 2758 priv->flags &= ~ALPS_DUALPOINT; 2759 2760 break; 2761 2762 case ALPS_PROTO_V4: 2763 priv->hw_init = alps_hw_init_v4; 2764 priv->process_packet = alps_process_packet_v4; 2765 priv->set_abs_params = alps_set_abs_params_semi_mt; 2766 priv->nibble_commands = alps_v4_nibble_commands; 2767 priv->addr_command = PSMOUSE_CMD_DISABLE; 2768 break; 2769 2770 case ALPS_PROTO_V5: 2771 priv->hw_init = alps_hw_init_dolphin_v1; 2772 priv->process_packet = alps_process_touchpad_packet_v3_v5; 2773 priv->decode_fields = alps_decode_dolphin; 2774 priv->set_abs_params = alps_set_abs_params_semi_mt; 2775 priv->nibble_commands = alps_v3_nibble_commands; 2776 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2777 priv->x_bits = 23; 2778 priv->y_bits = 12; 2779 2780 if (alps_dolphin_get_device_area(psmouse, priv)) 2781 return -EIO; 2782 2783 break; 2784 2785 case ALPS_PROTO_V6: 2786 priv->hw_init = alps_hw_init_v6; 2787 priv->process_packet = alps_process_packet_v6; 2788 priv->set_abs_params = alps_set_abs_params_st; 2789 priv->nibble_commands = alps_v6_nibble_commands; 2790 priv->x_max = 2047; 2791 priv->y_max = 1535; 2792 break; 2793 2794 case ALPS_PROTO_V7: 2795 priv->hw_init = alps_hw_init_v7; 2796 priv->process_packet = alps_process_packet_v7; 2797 priv->decode_fields = alps_decode_packet_v7; 2798 priv->set_abs_params = alps_set_abs_params_v7; 2799 priv->nibble_commands = alps_v3_nibble_commands; 2800 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2801 priv->x_max = 0xfff; 2802 priv->y_max = 0x7ff; 2803 2804 if (priv->fw_ver[1] != 0xba) 2805 priv->flags |= ALPS_BUTTONPAD; 2806 2807 if (alps_probe_trackstick_v3_v7(psmouse, ALPS_REG_BASE_V7) < 0) 2808 priv->flags &= ~ALPS_DUALPOINT; 2809 2810 break; 2811 2812 case ALPS_PROTO_V8: 2813 priv->hw_init = alps_hw_init_ss4_v2; 2814 priv->process_packet = alps_process_packet_ss4_v2; 2815 priv->decode_fields = alps_decode_ss4_v2; 2816 priv->set_abs_params = alps_set_abs_params_ss4_v2; 2817 priv->nibble_commands = alps_v3_nibble_commands; 2818 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2819 2820 if (alps_set_defaults_ss4_v2(psmouse, priv)) 2821 return -EIO; 2822 2823 break; 2824 } 2825 2826 return 0; 2827 } 2828 2829 static const struct alps_protocol_info *alps_match_table(unsigned char *e7, 2830 unsigned char *ec) 2831 { 2832 const struct alps_model_info *model; 2833 int i; 2834 2835 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) { 2836 model = &alps_model_data[i]; 2837 2838 if (!memcmp(e7, model->signature, sizeof(model->signature))) 2839 return &model->protocol_info; 2840 } 2841 2842 return NULL; 2843 } 2844 2845 static int alps_identify(struct psmouse *psmouse, struct alps_data *priv) 2846 { 2847 const struct alps_protocol_info *protocol; 2848 unsigned char e6[4], e7[4], ec[4]; 2849 int error; 2850 2851 /* 2852 * First try "E6 report". 2853 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed. 2854 * The bits 0-2 of the first byte will be 1s if some buttons are 2855 * pressed. 2856 */ 2857 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2858 PSMOUSE_CMD_SETSCALE11, e6)) 2859 return -EIO; 2860 2861 if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100)) 2862 return -EINVAL; 2863 2864 /* 2865 * Now get the "E7" and "EC" reports. These will uniquely identify 2866 * most ALPS touchpads. 2867 */ 2868 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2869 PSMOUSE_CMD_SETSCALE21, e7) || 2870 alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2871 PSMOUSE_CMD_RESET_WRAP, ec) || 2872 alps_exit_command_mode(psmouse)) 2873 return -EIO; 2874 2875 protocol = alps_match_table(e7, ec); 2876 if (!protocol) { 2877 if (e7[0] == 0x73 && e7[1] == 0x02 && e7[2] == 0x64 && 2878 ec[2] == 0x8a) { 2879 protocol = &alps_v4_protocol_data; 2880 } else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 && 2881 ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) { 2882 protocol = &alps_v5_protocol_data; 2883 } else if (ec[0] == 0x88 && 2884 ((ec[1] & 0xf0) == 0xb0 || (ec[1] & 0xf0) == 0xc0)) { 2885 protocol = &alps_v7_protocol_data; 2886 } else if (ec[0] == 0x88 && ec[1] == 0x08) { 2887 protocol = &alps_v3_rushmore_data; 2888 } else if (ec[0] == 0x88 && ec[1] == 0x07 && 2889 ec[2] >= 0x90 && ec[2] <= 0x9d) { 2890 protocol = &alps_v3_protocol_data; 2891 } else if (e7[0] == 0x73 && e7[1] == 0x03 && 2892 (e7[2] == 0x14 || e7[2] == 0x28)) { 2893 protocol = &alps_v8_protocol_data; 2894 } else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0xc8) { 2895 protocol = &alps_v9_protocol_data; 2896 psmouse_warn(psmouse, 2897 "Unsupported ALPS V9 touchpad: E7=%3ph, EC=%3ph\n", 2898 e7, ec); 2899 return -EINVAL; 2900 } else { 2901 psmouse_dbg(psmouse, 2902 "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec); 2903 return -EINVAL; 2904 } 2905 } 2906 2907 if (priv) { 2908 /* Save Device ID and Firmware version */ 2909 memcpy(priv->dev_id, e7, 3); 2910 memcpy(priv->fw_ver, ec, 3); 2911 error = alps_set_protocol(psmouse, priv, protocol); 2912 if (error) 2913 return error; 2914 } 2915 2916 return 0; 2917 } 2918 2919 static int alps_reconnect(struct psmouse *psmouse) 2920 { 2921 struct alps_data *priv = psmouse->private; 2922 2923 psmouse_reset(psmouse); 2924 2925 if (alps_identify(psmouse, priv) < 0) 2926 return -1; 2927 2928 return priv->hw_init(psmouse); 2929 } 2930 2931 static void alps_disconnect(struct psmouse *psmouse) 2932 { 2933 struct alps_data *priv = psmouse->private; 2934 2935 psmouse_reset(psmouse); 2936 del_timer_sync(&priv->timer); 2937 if (priv->dev2) 2938 input_unregister_device(priv->dev2); 2939 if (!IS_ERR_OR_NULL(priv->dev3)) 2940 input_unregister_device(priv->dev3); 2941 kfree(priv); 2942 } 2943 2944 static void alps_set_abs_params_st(struct alps_data *priv, 2945 struct input_dev *dev1) 2946 { 2947 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0); 2948 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0); 2949 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2950 } 2951 2952 static void alps_set_abs_params_mt_common(struct alps_data *priv, 2953 struct input_dev *dev1) 2954 { 2955 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0); 2956 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0); 2957 2958 input_abs_set_res(dev1, ABS_MT_POSITION_X, priv->x_res); 2959 input_abs_set_res(dev1, ABS_MT_POSITION_Y, priv->y_res); 2960 2961 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit); 2962 set_bit(BTN_TOOL_QUADTAP, dev1->keybit); 2963 } 2964 2965 static void alps_set_abs_params_semi_mt(struct alps_data *priv, 2966 struct input_dev *dev1) 2967 { 2968 alps_set_abs_params_mt_common(priv, dev1); 2969 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2970 2971 input_mt_init_slots(dev1, MAX_TOUCHES, 2972 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 2973 INPUT_MT_SEMI_MT); 2974 } 2975 2976 static void alps_set_abs_params_v7(struct alps_data *priv, 2977 struct input_dev *dev1) 2978 { 2979 alps_set_abs_params_mt_common(priv, dev1); 2980 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2981 2982 input_mt_init_slots(dev1, MAX_TOUCHES, 2983 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 2984 INPUT_MT_TRACK); 2985 2986 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2987 } 2988 2989 static void alps_set_abs_params_ss4_v2(struct alps_data *priv, 2990 struct input_dev *dev1) 2991 { 2992 alps_set_abs_params_mt_common(priv, dev1); 2993 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2994 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2995 2996 input_mt_init_slots(dev1, MAX_TOUCHES, 2997 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 2998 INPUT_MT_TRACK); 2999 } 3000 3001 int alps_init(struct psmouse *psmouse) 3002 { 3003 struct alps_data *priv = psmouse->private; 3004 struct input_dev *dev1 = psmouse->dev; 3005 int error; 3006 3007 error = priv->hw_init(psmouse); 3008 if (error) 3009 goto init_fail; 3010 3011 /* 3012 * Undo part of setup done for us by psmouse core since touchpad 3013 * is not a relative device. 3014 */ 3015 __clear_bit(EV_REL, dev1->evbit); 3016 __clear_bit(REL_X, dev1->relbit); 3017 __clear_bit(REL_Y, dev1->relbit); 3018 3019 /* 3020 * Now set up our capabilities. 3021 */ 3022 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY); 3023 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH); 3024 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER); 3025 dev1->keybit[BIT_WORD(BTN_LEFT)] |= 3026 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); 3027 3028 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS); 3029 3030 priv->set_abs_params(priv, dev1); 3031 3032 if (priv->flags & ALPS_WHEEL) { 3033 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL); 3034 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL); 3035 } 3036 3037 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 3038 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD); 3039 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK); 3040 } 3041 3042 if (priv->flags & ALPS_FOUR_BUTTONS) { 3043 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0); 3044 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1); 3045 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2); 3046 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3); 3047 } else if (priv->flags & ALPS_BUTTONPAD) { 3048 set_bit(INPUT_PROP_BUTTONPAD, dev1->propbit); 3049 clear_bit(BTN_RIGHT, dev1->keybit); 3050 } else { 3051 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE); 3052 } 3053 3054 if (priv->flags & ALPS_DUALPOINT) { 3055 struct input_dev *dev2; 3056 3057 dev2 = input_allocate_device(); 3058 if (!dev2) { 3059 psmouse_err(psmouse, 3060 "failed to allocate trackstick device\n"); 3061 error = -ENOMEM; 3062 goto init_fail; 3063 } 3064 3065 snprintf(priv->phys2, sizeof(priv->phys2), "%s/input1", 3066 psmouse->ps2dev.serio->phys); 3067 dev2->phys = priv->phys2; 3068 3069 /* 3070 * format of input device name is: "protocol vendor name" 3071 * see function psmouse_switch_protocol() in psmouse-base.c 3072 */ 3073 dev2->name = "AlpsPS/2 ALPS DualPoint Stick"; 3074 3075 dev2->id.bustype = BUS_I8042; 3076 dev2->id.vendor = 0x0002; 3077 dev2->id.product = PSMOUSE_ALPS; 3078 dev2->id.version = priv->proto_version; 3079 dev2->dev.parent = &psmouse->ps2dev.serio->dev; 3080 3081 input_set_capability(dev2, EV_REL, REL_X); 3082 input_set_capability(dev2, EV_REL, REL_Y); 3083 if (priv->flags & ALPS_DUALPOINT_WITH_PRESSURE) { 3084 input_set_capability(dev2, EV_ABS, ABS_PRESSURE); 3085 input_set_abs_params(dev2, ABS_PRESSURE, 0, 127, 0, 0); 3086 } 3087 input_set_capability(dev2, EV_KEY, BTN_LEFT); 3088 input_set_capability(dev2, EV_KEY, BTN_RIGHT); 3089 input_set_capability(dev2, EV_KEY, BTN_MIDDLE); 3090 3091 __set_bit(INPUT_PROP_POINTER, dev2->propbit); 3092 __set_bit(INPUT_PROP_POINTING_STICK, dev2->propbit); 3093 3094 error = input_register_device(dev2); 3095 if (error) { 3096 psmouse_err(psmouse, 3097 "failed to register trackstick device: %d\n", 3098 error); 3099 input_free_device(dev2); 3100 goto init_fail; 3101 } 3102 3103 priv->dev2 = dev2; 3104 } 3105 3106 priv->psmouse = psmouse; 3107 3108 INIT_DELAYED_WORK(&priv->dev3_register_work, 3109 alps_register_bare_ps2_mouse); 3110 3111 psmouse->protocol_handler = alps_process_byte; 3112 psmouse->poll = alps_poll; 3113 psmouse->disconnect = alps_disconnect; 3114 psmouse->reconnect = alps_reconnect; 3115 psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6; 3116 3117 /* We are having trouble resyncing ALPS touchpads so disable it for now */ 3118 psmouse->resync_time = 0; 3119 3120 /* Allow 2 invalid packets without resetting device */ 3121 psmouse->resetafter = psmouse->pktsize * 2; 3122 3123 return 0; 3124 3125 init_fail: 3126 psmouse_reset(psmouse); 3127 /* 3128 * Even though we did not allocate psmouse->private we do free 3129 * it here. 3130 */ 3131 kfree(psmouse->private); 3132 psmouse->private = NULL; 3133 return error; 3134 } 3135 3136 int alps_detect(struct psmouse *psmouse, bool set_properties) 3137 { 3138 struct alps_data *priv; 3139 int error; 3140 3141 error = alps_identify(psmouse, NULL); 3142 if (error) 3143 return error; 3144 3145 /* 3146 * Reset the device to make sure it is fully operational: 3147 * on some laptops, like certain Dell Latitudes, we may 3148 * fail to properly detect presence of trackstick if device 3149 * has not been reset. 3150 */ 3151 psmouse_reset(psmouse); 3152 3153 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL); 3154 if (!priv) 3155 return -ENOMEM; 3156 3157 error = alps_identify(psmouse, priv); 3158 if (error) { 3159 kfree(priv); 3160 return error; 3161 } 3162 3163 if (set_properties) { 3164 psmouse->vendor = "ALPS"; 3165 psmouse->name = priv->flags & ALPS_DUALPOINT ? 3166 "DualPoint TouchPad" : "GlidePoint"; 3167 psmouse->model = priv->proto_version; 3168 } else { 3169 /* 3170 * Destroy alps_data structure we allocated earlier since 3171 * this was just a "trial run". Otherwise we'll keep it 3172 * to be used by alps_init() which has to be called if 3173 * we succeed and set_properties is true. 3174 */ 3175 kfree(priv); 3176 psmouse->private = NULL; 3177 } 3178 3179 return 0; 3180 } 3181 3182