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 | ALPS_DUALPOINT_WITH_PRESSURE 143 }; 144 145 static const struct alps_protocol_info alps_v3_rushmore_data = { 146 ALPS_PROTO_V3_RUSHMORE, 0x8f, 0x8f, ALPS_DUALPOINT | ALPS_DUALPOINT_WITH_PRESSURE 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 | ALPS_DUALPOINT_WITH_PRESSURE 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; 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 input_report_abs(dev, ABS_PRESSURE, z); 599 600 /* 601 * Most ALPS models report the trackstick buttons in the touchpad 602 * packets, but a few report them here. No reliable way has been 603 * found to differentiate between the models upfront, so we enable 604 * the quirk in response to seeing a button press in the trackstick 605 * packet. 606 */ 607 left = packet[3] & 0x01; 608 right = packet[3] & 0x02; 609 middle = packet[3] & 0x04; 610 611 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) && 612 (left || right || middle)) 613 priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS; 614 615 if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) { 616 input_report_key(dev, BTN_LEFT, left); 617 input_report_key(dev, BTN_RIGHT, right); 618 input_report_key(dev, BTN_MIDDLE, middle); 619 } 620 621 input_sync(dev); 622 return; 623 } 624 625 static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p) 626 { 627 f->left = !!(p[3] & 0x01); 628 f->right = !!(p[3] & 0x02); 629 f->middle = !!(p[3] & 0x04); 630 631 f->ts_left = !!(p[3] & 0x10); 632 f->ts_right = !!(p[3] & 0x20); 633 f->ts_middle = !!(p[3] & 0x40); 634 } 635 636 static int alps_decode_pinnacle(struct alps_fields *f, unsigned char *p, 637 struct psmouse *psmouse) 638 { 639 f->first_mp = !!(p[4] & 0x40); 640 f->is_mp = !!(p[0] & 0x40); 641 642 if (f->is_mp) { 643 f->fingers = (p[5] & 0x3) + 1; 644 f->x_map = ((p[4] & 0x7e) << 8) | 645 ((p[1] & 0x7f) << 2) | 646 ((p[0] & 0x30) >> 4); 647 f->y_map = ((p[3] & 0x70) << 4) | 648 ((p[2] & 0x7f) << 1) | 649 (p[4] & 0x01); 650 } else { 651 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | 652 ((p[0] & 0x30) >> 4); 653 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); 654 f->pressure = p[5] & 0x7f; 655 656 alps_decode_buttons_v3(f, p); 657 } 658 659 return 0; 660 } 661 662 static int alps_decode_rushmore(struct alps_fields *f, unsigned char *p, 663 struct psmouse *psmouse) 664 { 665 f->first_mp = !!(p[4] & 0x40); 666 f->is_mp = !!(p[5] & 0x40); 667 668 if (f->is_mp) { 669 f->fingers = max((p[5] & 0x3), ((p[5] >> 2) & 0x3)) + 1; 670 f->x_map = ((p[5] & 0x10) << 11) | 671 ((p[4] & 0x7e) << 8) | 672 ((p[1] & 0x7f) << 2) | 673 ((p[0] & 0x30) >> 4); 674 f->y_map = ((p[5] & 0x20) << 6) | 675 ((p[3] & 0x70) << 4) | 676 ((p[2] & 0x7f) << 1) | 677 (p[4] & 0x01); 678 } else { 679 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | 680 ((p[0] & 0x30) >> 4); 681 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); 682 f->pressure = p[5] & 0x7f; 683 684 alps_decode_buttons_v3(f, p); 685 } 686 687 return 0; 688 } 689 690 static int alps_decode_dolphin(struct alps_fields *f, unsigned char *p, 691 struct psmouse *psmouse) 692 { 693 u64 palm_data = 0; 694 struct alps_data *priv = psmouse->private; 695 696 f->first_mp = !!(p[0] & 0x02); 697 f->is_mp = !!(p[0] & 0x20); 698 699 if (!f->is_mp) { 700 f->st.x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7)); 701 f->st.y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3)); 702 f->pressure = (p[0] & 4) ? 0 : p[5] & 0x7f; 703 alps_decode_buttons_v3(f, p); 704 } else { 705 f->fingers = ((p[0] & 0x6) >> 1 | 706 (p[0] & 0x10) >> 2); 707 708 palm_data = (p[1] & 0x7f) | 709 ((p[2] & 0x7f) << 7) | 710 ((p[4] & 0x7f) << 14) | 711 ((p[5] & 0x7f) << 21) | 712 ((p[3] & 0x07) << 28) | 713 (((u64)p[3] & 0x70) << 27) | 714 (((u64)p[0] & 0x01) << 34); 715 716 /* Y-profile is stored in P(0) to p(n-1), n = y_bits; */ 717 f->y_map = palm_data & (BIT(priv->y_bits) - 1); 718 719 /* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */ 720 f->x_map = (palm_data >> priv->y_bits) & 721 (BIT(priv->x_bits) - 1); 722 } 723 724 return 0; 725 } 726 727 static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse) 728 { 729 struct alps_data *priv = psmouse->private; 730 unsigned char *packet = psmouse->packet; 731 struct input_dev *dev2 = priv->dev2; 732 struct alps_fields *f = &priv->f; 733 int fingers = 0; 734 735 memset(f, 0, sizeof(*f)); 736 737 priv->decode_fields(f, packet, psmouse); 738 739 /* 740 * There's no single feature of touchpad position and bitmap packets 741 * that can be used to distinguish between them. We rely on the fact 742 * that a bitmap packet should always follow a position packet with 743 * bit 6 of packet[4] set. 744 */ 745 if (priv->multi_packet) { 746 /* 747 * Sometimes a position packet will indicate a multi-packet 748 * sequence, but then what follows is another position 749 * packet. Check for this, and when it happens process the 750 * position packet as usual. 751 */ 752 if (f->is_mp) { 753 fingers = f->fingers; 754 /* 755 * Bitmap processing uses position packet's coordinate 756 * data, so we need to do decode it first. 757 */ 758 priv->decode_fields(f, priv->multi_data, psmouse); 759 if (alps_process_bitmap(priv, f) == 0) 760 fingers = 0; /* Use st data */ 761 } else { 762 priv->multi_packet = 0; 763 } 764 } 765 766 /* 767 * Bit 6 of byte 0 is not usually set in position packets. The only 768 * times it seems to be set is in situations where the data is 769 * suspect anyway, e.g. a palm resting flat on the touchpad. Given 770 * this combined with the fact that this bit is useful for filtering 771 * out misidentified bitmap packets, we reject anything with this 772 * bit set. 773 */ 774 if (f->is_mp) 775 return; 776 777 if (!priv->multi_packet && f->first_mp) { 778 priv->multi_packet = 1; 779 memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); 780 return; 781 } 782 783 priv->multi_packet = 0; 784 785 /* 786 * Sometimes the hardware sends a single packet with z = 0 787 * in the middle of a stream. Real releases generate packets 788 * with x, y, and z all zero, so these seem to be flukes. 789 * Ignore them. 790 */ 791 if (f->st.x && f->st.y && !f->pressure) 792 return; 793 794 alps_report_semi_mt_data(psmouse, fingers); 795 796 if ((priv->flags & ALPS_DUALPOINT) && 797 !(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) { 798 input_report_key(dev2, BTN_LEFT, f->ts_left); 799 input_report_key(dev2, BTN_RIGHT, f->ts_right); 800 input_report_key(dev2, BTN_MIDDLE, f->ts_middle); 801 input_sync(dev2); 802 } 803 } 804 805 static void alps_process_packet_v3(struct psmouse *psmouse) 806 { 807 unsigned char *packet = psmouse->packet; 808 809 /* 810 * v3 protocol packets come in three types, two representing 811 * touchpad data and one representing trackstick data. 812 * Trackstick packets seem to be distinguished by always 813 * having 0x3f in the last byte. This value has never been 814 * observed in the last byte of either of the other types 815 * of packets. 816 */ 817 if (packet[5] == 0x3f) { 818 alps_process_trackstick_packet_v3(psmouse); 819 return; 820 } 821 822 alps_process_touchpad_packet_v3_v5(psmouse); 823 } 824 825 static void alps_process_packet_v6(struct psmouse *psmouse) 826 { 827 struct alps_data *priv = psmouse->private; 828 unsigned char *packet = psmouse->packet; 829 struct input_dev *dev = psmouse->dev; 830 struct input_dev *dev2 = priv->dev2; 831 int x, y, z; 832 833 /* 834 * We can use Byte5 to distinguish if the packet is from Touchpad 835 * or Trackpoint. 836 * Touchpad: 0 - 0x7E 837 * Trackpoint: 0x7F 838 */ 839 if (packet[5] == 0x7F) { 840 /* It should be a DualPoint when received Trackpoint packet */ 841 if (!(priv->flags & ALPS_DUALPOINT)) { 842 psmouse_warn(psmouse, 843 "Rejected trackstick packet from non DualPoint device"); 844 return; 845 } 846 847 /* Trackpoint packet */ 848 x = packet[1] | ((packet[3] & 0x20) << 2); 849 y = packet[2] | ((packet[3] & 0x40) << 1); 850 z = packet[4]; 851 852 /* To prevent the cursor jump when finger lifted */ 853 if (x == 0x7F && y == 0x7F && z == 0x7F) 854 x = y = z = 0; 855 856 /* Divide 4 since trackpoint's speed is too fast */ 857 input_report_rel(dev2, REL_X, (char)x / 4); 858 input_report_rel(dev2, REL_Y, -((char)y / 4)); 859 860 psmouse_report_standard_buttons(dev2, packet[3]); 861 862 input_sync(dev2); 863 return; 864 } 865 866 /* Touchpad packet */ 867 x = packet[1] | ((packet[3] & 0x78) << 4); 868 y = packet[2] | ((packet[4] & 0x78) << 4); 869 z = packet[5]; 870 871 if (z > 30) 872 input_report_key(dev, BTN_TOUCH, 1); 873 if (z < 25) 874 input_report_key(dev, BTN_TOUCH, 0); 875 876 if (z > 0) { 877 input_report_abs(dev, ABS_X, x); 878 input_report_abs(dev, ABS_Y, y); 879 } 880 881 input_report_abs(dev, ABS_PRESSURE, z); 882 input_report_key(dev, BTN_TOOL_FINGER, z > 0); 883 884 /* v6 touchpad does not have middle button */ 885 packet[3] &= ~BIT(2); 886 psmouse_report_standard_buttons(dev2, packet[3]); 887 888 input_sync(dev); 889 } 890 891 static void alps_process_packet_v4(struct psmouse *psmouse) 892 { 893 struct alps_data *priv = psmouse->private; 894 unsigned char *packet = psmouse->packet; 895 struct alps_fields *f = &priv->f; 896 int offset; 897 898 /* 899 * v4 has a 6-byte encoding for bitmap data, but this data is 900 * broken up between 3 normal packets. Use priv->multi_packet to 901 * track our position in the bitmap packet. 902 */ 903 if (packet[6] & 0x40) { 904 /* sync, reset position */ 905 priv->multi_packet = 0; 906 } 907 908 if (WARN_ON_ONCE(priv->multi_packet > 2)) 909 return; 910 911 offset = 2 * priv->multi_packet; 912 priv->multi_data[offset] = packet[6]; 913 priv->multi_data[offset + 1] = packet[7]; 914 915 f->left = !!(packet[4] & 0x01); 916 f->right = !!(packet[4] & 0x02); 917 918 f->st.x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) | 919 ((packet[0] & 0x30) >> 4); 920 f->st.y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f); 921 f->pressure = packet[5] & 0x7f; 922 923 if (++priv->multi_packet > 2) { 924 priv->multi_packet = 0; 925 926 f->x_map = ((priv->multi_data[2] & 0x1f) << 10) | 927 ((priv->multi_data[3] & 0x60) << 3) | 928 ((priv->multi_data[0] & 0x3f) << 2) | 929 ((priv->multi_data[1] & 0x60) >> 5); 930 f->y_map = ((priv->multi_data[5] & 0x01) << 10) | 931 ((priv->multi_data[3] & 0x1f) << 5) | 932 (priv->multi_data[1] & 0x1f); 933 934 f->fingers = alps_process_bitmap(priv, f); 935 } 936 937 alps_report_semi_mt_data(psmouse, f->fingers); 938 } 939 940 static bool alps_is_valid_package_v7(struct psmouse *psmouse) 941 { 942 switch (psmouse->pktcnt) { 943 case 3: 944 return (psmouse->packet[2] & 0x40) == 0x40; 945 case 4: 946 return (psmouse->packet[3] & 0x48) == 0x48; 947 case 6: 948 return (psmouse->packet[5] & 0x40) == 0x00; 949 } 950 return true; 951 } 952 953 static unsigned char alps_get_packet_id_v7(char *byte) 954 { 955 unsigned char packet_id; 956 957 if (byte[4] & 0x40) 958 packet_id = V7_PACKET_ID_TWO; 959 else if (byte[4] & 0x01) 960 packet_id = V7_PACKET_ID_MULTI; 961 else if ((byte[0] & 0x10) && !(byte[4] & 0x43)) 962 packet_id = V7_PACKET_ID_NEW; 963 else if (byte[1] == 0x00 && byte[4] == 0x00) 964 packet_id = V7_PACKET_ID_IDLE; 965 else 966 packet_id = V7_PACKET_ID_UNKNOWN; 967 968 return packet_id; 969 } 970 971 static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt, 972 unsigned char *pkt, 973 unsigned char pkt_id) 974 { 975 mt[0].x = ((pkt[2] & 0x80) << 4); 976 mt[0].x |= ((pkt[2] & 0x3F) << 5); 977 mt[0].x |= ((pkt[3] & 0x30) >> 1); 978 mt[0].x |= (pkt[3] & 0x07); 979 mt[0].y = (pkt[1] << 3) | (pkt[0] & 0x07); 980 981 mt[1].x = ((pkt[3] & 0x80) << 4); 982 mt[1].x |= ((pkt[4] & 0x80) << 3); 983 mt[1].x |= ((pkt[4] & 0x3F) << 4); 984 mt[1].y = ((pkt[5] & 0x80) << 3); 985 mt[1].y |= ((pkt[5] & 0x3F) << 4); 986 987 switch (pkt_id) { 988 case V7_PACKET_ID_TWO: 989 mt[1].x &= ~0x000F; 990 mt[1].y |= 0x000F; 991 /* Detect false-postive touches where x & y report max value */ 992 if (mt[1].y == 0x7ff && mt[1].x == 0xff0) { 993 mt[1].x = 0; 994 /* y gets set to 0 at the end of this function */ 995 } 996 break; 997 998 case V7_PACKET_ID_MULTI: 999 mt[1].x &= ~0x003F; 1000 mt[1].y &= ~0x0020; 1001 mt[1].y |= ((pkt[4] & 0x02) << 4); 1002 mt[1].y |= 0x001F; 1003 break; 1004 1005 case V7_PACKET_ID_NEW: 1006 mt[1].x &= ~0x003F; 1007 mt[1].x |= (pkt[0] & 0x20); 1008 mt[1].y |= 0x000F; 1009 break; 1010 } 1011 1012 mt[0].y = 0x7FF - mt[0].y; 1013 mt[1].y = 0x7FF - mt[1].y; 1014 } 1015 1016 static int alps_get_mt_count(struct input_mt_pos *mt) 1017 { 1018 int i, fingers = 0; 1019 1020 for (i = 0; i < MAX_TOUCHES; i++) { 1021 if (mt[i].x != 0 || mt[i].y != 0) 1022 fingers++; 1023 } 1024 1025 return fingers; 1026 } 1027 1028 static int alps_decode_packet_v7(struct alps_fields *f, 1029 unsigned char *p, 1030 struct psmouse *psmouse) 1031 { 1032 struct alps_data *priv = psmouse->private; 1033 unsigned char pkt_id; 1034 1035 pkt_id = alps_get_packet_id_v7(p); 1036 if (pkt_id == V7_PACKET_ID_IDLE) 1037 return 0; 1038 if (pkt_id == V7_PACKET_ID_UNKNOWN) 1039 return -1; 1040 /* 1041 * NEW packets are send to indicate a discontinuity in the finger 1042 * coordinate reporting. Specifically a finger may have moved from 1043 * slot 0 to 1 or vice versa. INPUT_MT_TRACK takes care of this for 1044 * us. 1045 * 1046 * NEW packets have 3 problems: 1047 * 1) They do not contain middle / right button info (on non clickpads) 1048 * this can be worked around by preserving the old button state 1049 * 2) They do not contain an accurate fingercount, and they are 1050 * typically send when the number of fingers changes. We cannot use 1051 * the old finger count as that may mismatch with the amount of 1052 * touch coordinates we've available in the NEW packet 1053 * 3) Their x data for the second touch is inaccurate leading to 1054 * a possible jump of the x coordinate by 16 units when the first 1055 * non NEW packet comes in 1056 * Since problems 2 & 3 cannot be worked around, just ignore them. 1057 */ 1058 if (pkt_id == V7_PACKET_ID_NEW) 1059 return 1; 1060 1061 alps_get_finger_coordinate_v7(f->mt, p, pkt_id); 1062 1063 if (pkt_id == V7_PACKET_ID_TWO) 1064 f->fingers = alps_get_mt_count(f->mt); 1065 else /* pkt_id == V7_PACKET_ID_MULTI */ 1066 f->fingers = 3 + (p[5] & 0x03); 1067 1068 f->left = (p[0] & 0x80) >> 7; 1069 if (priv->flags & ALPS_BUTTONPAD) { 1070 if (p[0] & 0x20) 1071 f->fingers++; 1072 if (p[0] & 0x10) 1073 f->fingers++; 1074 } else { 1075 f->right = (p[0] & 0x20) >> 5; 1076 f->middle = (p[0] & 0x10) >> 4; 1077 } 1078 1079 /* Sometimes a single touch is reported in mt[1] rather then mt[0] */ 1080 if (f->fingers == 1 && f->mt[0].x == 0 && f->mt[0].y == 0) { 1081 f->mt[0].x = f->mt[1].x; 1082 f->mt[0].y = f->mt[1].y; 1083 f->mt[1].x = 0; 1084 f->mt[1].y = 0; 1085 } 1086 1087 return 0; 1088 } 1089 1090 static void alps_process_trackstick_packet_v7(struct psmouse *psmouse) 1091 { 1092 struct alps_data *priv = psmouse->private; 1093 unsigned char *packet = psmouse->packet; 1094 struct input_dev *dev2 = priv->dev2; 1095 int x, y, z; 1096 1097 /* It should be a DualPoint when received trackstick packet */ 1098 if (!(priv->flags & ALPS_DUALPOINT)) { 1099 psmouse_warn(psmouse, 1100 "Rejected trackstick packet from non DualPoint device"); 1101 return; 1102 } 1103 1104 x = ((packet[2] & 0xbf)) | ((packet[3] & 0x10) << 2); 1105 y = (packet[3] & 0x07) | (packet[4] & 0xb8) | 1106 ((packet[3] & 0x20) << 1); 1107 z = (packet[5] & 0x3f) | ((packet[3] & 0x80) >> 1); 1108 1109 input_report_rel(dev2, REL_X, (char)x); 1110 input_report_rel(dev2, REL_Y, -((char)y)); 1111 input_report_abs(dev2, ABS_PRESSURE, z); 1112 1113 psmouse_report_standard_buttons(dev2, packet[1]); 1114 1115 input_sync(dev2); 1116 } 1117 1118 static void alps_process_touchpad_packet_v7(struct psmouse *psmouse) 1119 { 1120 struct alps_data *priv = psmouse->private; 1121 struct input_dev *dev = psmouse->dev; 1122 struct alps_fields *f = &priv->f; 1123 1124 memset(f, 0, sizeof(*f)); 1125 1126 if (priv->decode_fields(f, psmouse->packet, psmouse)) 1127 return; 1128 1129 alps_report_mt_data(psmouse, alps_get_mt_count(f->mt)); 1130 1131 input_mt_report_finger_count(dev, f->fingers); 1132 1133 input_report_key(dev, BTN_LEFT, f->left); 1134 input_report_key(dev, BTN_RIGHT, f->right); 1135 input_report_key(dev, BTN_MIDDLE, f->middle); 1136 1137 input_sync(dev); 1138 } 1139 1140 static void alps_process_packet_v7(struct psmouse *psmouse) 1141 { 1142 unsigned char *packet = psmouse->packet; 1143 1144 if (packet[0] == 0x48 && (packet[4] & 0x47) == 0x06) 1145 alps_process_trackstick_packet_v7(psmouse); 1146 else 1147 alps_process_touchpad_packet_v7(psmouse); 1148 } 1149 1150 static enum SS4_PACKET_ID alps_get_pkt_id_ss4_v2(unsigned char *byte) 1151 { 1152 enum SS4_PACKET_ID pkt_id = SS4_PACKET_ID_IDLE; 1153 1154 switch (byte[3] & 0x30) { 1155 case 0x00: 1156 if (SS4_IS_IDLE_V2(byte)) { 1157 pkt_id = SS4_PACKET_ID_IDLE; 1158 } else { 1159 pkt_id = SS4_PACKET_ID_ONE; 1160 } 1161 break; 1162 case 0x10: 1163 /* two-finger finger positions */ 1164 pkt_id = SS4_PACKET_ID_TWO; 1165 break; 1166 case 0x20: 1167 /* stick pointer */ 1168 pkt_id = SS4_PACKET_ID_STICK; 1169 break; 1170 case 0x30: 1171 /* third and fourth finger positions */ 1172 pkt_id = SS4_PACKET_ID_MULTI; 1173 break; 1174 } 1175 1176 return pkt_id; 1177 } 1178 1179 static int alps_decode_ss4_v2(struct alps_fields *f, 1180 unsigned char *p, struct psmouse *psmouse) 1181 { 1182 struct alps_data *priv = psmouse->private; 1183 enum SS4_PACKET_ID pkt_id; 1184 unsigned int no_data_x, no_data_y; 1185 1186 pkt_id = alps_get_pkt_id_ss4_v2(p); 1187 1188 /* Current packet is 1Finger coordinate packet */ 1189 switch (pkt_id) { 1190 case SS4_PACKET_ID_ONE: 1191 f->mt[0].x = SS4_1F_X_V2(p); 1192 f->mt[0].y = SS4_1F_Y_V2(p); 1193 f->pressure = ((SS4_1F_Z_V2(p)) * 2) & 0x7f; 1194 /* 1195 * When a button is held the device will give us events 1196 * with x, y, and pressure of 0. This causes annoying jumps 1197 * if a touch is released while the button is held. 1198 * Handle this by claiming zero contacts. 1199 */ 1200 f->fingers = f->pressure > 0 ? 1 : 0; 1201 f->first_mp = 0; 1202 f->is_mp = 0; 1203 break; 1204 1205 case SS4_PACKET_ID_TWO: 1206 if (priv->flags & ALPS_BUTTONPAD) { 1207 if (IS_SS4PLUS_DEV(priv->dev_id)) { 1208 f->mt[0].x = SS4_PLUS_BTL_MF_X_V2(p, 0); 1209 f->mt[1].x = SS4_PLUS_BTL_MF_X_V2(p, 1); 1210 } else { 1211 f->mt[0].x = SS4_BTL_MF_X_V2(p, 0); 1212 f->mt[1].x = SS4_BTL_MF_X_V2(p, 1); 1213 } 1214 f->mt[0].y = SS4_BTL_MF_Y_V2(p, 0); 1215 f->mt[1].y = SS4_BTL_MF_Y_V2(p, 1); 1216 } else { 1217 if (IS_SS4PLUS_DEV(priv->dev_id)) { 1218 f->mt[0].x = SS4_PLUS_STD_MF_X_V2(p, 0); 1219 f->mt[1].x = SS4_PLUS_STD_MF_X_V2(p, 1); 1220 } else { 1221 f->mt[0].x = SS4_STD_MF_X_V2(p, 0); 1222 f->mt[1].x = SS4_STD_MF_X_V2(p, 1); 1223 } 1224 f->mt[0].y = SS4_STD_MF_Y_V2(p, 0); 1225 f->mt[1].y = SS4_STD_MF_Y_V2(p, 1); 1226 } 1227 f->pressure = SS4_MF_Z_V2(p, 0) ? 0x30 : 0; 1228 1229 if (SS4_IS_MF_CONTINUE(p)) { 1230 f->first_mp = 1; 1231 } else { 1232 f->fingers = 2; 1233 f->first_mp = 0; 1234 } 1235 f->is_mp = 0; 1236 1237 break; 1238 1239 case SS4_PACKET_ID_MULTI: 1240 if (priv->flags & ALPS_BUTTONPAD) { 1241 if (IS_SS4PLUS_DEV(priv->dev_id)) { 1242 f->mt[2].x = SS4_PLUS_BTL_MF_X_V2(p, 0); 1243 f->mt[3].x = SS4_PLUS_BTL_MF_X_V2(p, 1); 1244 no_data_x = SS4_PLUS_MFPACKET_NO_AX_BL; 1245 } else { 1246 f->mt[2].x = SS4_BTL_MF_X_V2(p, 0); 1247 f->mt[3].x = SS4_BTL_MF_X_V2(p, 1); 1248 no_data_x = SS4_MFPACKET_NO_AX_BL; 1249 } 1250 no_data_y = SS4_MFPACKET_NO_AY_BL; 1251 1252 f->mt[2].y = SS4_BTL_MF_Y_V2(p, 0); 1253 f->mt[3].y = SS4_BTL_MF_Y_V2(p, 1); 1254 } else { 1255 if (IS_SS4PLUS_DEV(priv->dev_id)) { 1256 f->mt[2].x = SS4_PLUS_STD_MF_X_V2(p, 0); 1257 f->mt[3].x = SS4_PLUS_STD_MF_X_V2(p, 1); 1258 no_data_x = SS4_PLUS_MFPACKET_NO_AX; 1259 } else { 1260 f->mt[2].x = SS4_STD_MF_X_V2(p, 0); 1261 f->mt[3].x = SS4_STD_MF_X_V2(p, 1); 1262 no_data_x = SS4_MFPACKET_NO_AX; 1263 } 1264 no_data_y = SS4_MFPACKET_NO_AY; 1265 1266 f->mt[2].y = SS4_STD_MF_Y_V2(p, 0); 1267 f->mt[3].y = SS4_STD_MF_Y_V2(p, 1); 1268 } 1269 1270 f->first_mp = 0; 1271 f->is_mp = 1; 1272 1273 if (SS4_IS_5F_DETECTED(p)) { 1274 f->fingers = 5; 1275 } else if (f->mt[3].x == no_data_x && 1276 f->mt[3].y == no_data_y) { 1277 f->mt[3].x = 0; 1278 f->mt[3].y = 0; 1279 f->fingers = 3; 1280 } else { 1281 f->fingers = 4; 1282 } 1283 break; 1284 1285 case SS4_PACKET_ID_STICK: 1286 /* 1287 * x, y, and pressure are decoded in 1288 * alps_process_packet_ss4_v2() 1289 */ 1290 f->first_mp = 0; 1291 f->is_mp = 0; 1292 break; 1293 1294 case SS4_PACKET_ID_IDLE: 1295 default: 1296 memset(f, 0, sizeof(struct alps_fields)); 1297 break; 1298 } 1299 1300 /* handle buttons */ 1301 if (pkt_id == SS4_PACKET_ID_STICK) { 1302 f->ts_left = !!(SS4_BTN_V2(p) & 0x01); 1303 f->ts_right = !!(SS4_BTN_V2(p) & 0x02); 1304 f->ts_middle = !!(SS4_BTN_V2(p) & 0x04); 1305 } else { 1306 f->left = !!(SS4_BTN_V2(p) & 0x01); 1307 if (!(priv->flags & ALPS_BUTTONPAD)) { 1308 f->right = !!(SS4_BTN_V2(p) & 0x02); 1309 f->middle = !!(SS4_BTN_V2(p) & 0x04); 1310 } 1311 } 1312 1313 return 0; 1314 } 1315 1316 static void alps_process_packet_ss4_v2(struct psmouse *psmouse) 1317 { 1318 struct alps_data *priv = psmouse->private; 1319 unsigned char *packet = psmouse->packet; 1320 struct input_dev *dev = psmouse->dev; 1321 struct input_dev *dev2 = priv->dev2; 1322 struct alps_fields *f = &priv->f; 1323 1324 memset(f, 0, sizeof(struct alps_fields)); 1325 priv->decode_fields(f, packet, psmouse); 1326 if (priv->multi_packet) { 1327 /* 1328 * Sometimes the first packet will indicate a multi-packet 1329 * sequence, but sometimes the next multi-packet would not 1330 * come. Check for this, and when it happens process the 1331 * position packet as usual. 1332 */ 1333 if (f->is_mp) { 1334 /* Now process the 1st packet */ 1335 priv->decode_fields(f, priv->multi_data, psmouse); 1336 } else { 1337 priv->multi_packet = 0; 1338 } 1339 } 1340 1341 /* 1342 * "f.is_mp" would always be '0' after merging the 1st and 2nd packet. 1343 * When it is set, it means 2nd packet comes without 1st packet come. 1344 */ 1345 if (f->is_mp) 1346 return; 1347 1348 /* Save the first packet */ 1349 if (!priv->multi_packet && f->first_mp) { 1350 priv->multi_packet = 1; 1351 memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); 1352 return; 1353 } 1354 1355 priv->multi_packet = 0; 1356 1357 /* Report trackstick */ 1358 if (alps_get_pkt_id_ss4_v2(packet) == SS4_PACKET_ID_STICK) { 1359 if (!(priv->flags & ALPS_DUALPOINT)) { 1360 psmouse_warn(psmouse, 1361 "Rejected trackstick packet from non DualPoint device"); 1362 return; 1363 } 1364 1365 input_report_rel(dev2, REL_X, SS4_TS_X_V2(packet)); 1366 input_report_rel(dev2, REL_Y, SS4_TS_Y_V2(packet)); 1367 input_report_abs(dev2, ABS_PRESSURE, SS4_TS_Z_V2(packet)); 1368 1369 input_report_key(dev2, BTN_LEFT, f->ts_left); 1370 input_report_key(dev2, BTN_RIGHT, f->ts_right); 1371 input_report_key(dev2, BTN_MIDDLE, f->ts_middle); 1372 1373 input_sync(dev2); 1374 return; 1375 } 1376 1377 /* Report touchpad */ 1378 alps_report_mt_data(psmouse, (f->fingers <= 4) ? f->fingers : 4); 1379 1380 input_mt_report_finger_count(dev, f->fingers); 1381 1382 input_report_key(dev, BTN_LEFT, f->left); 1383 input_report_key(dev, BTN_RIGHT, f->right); 1384 input_report_key(dev, BTN_MIDDLE, f->middle); 1385 1386 input_report_abs(dev, ABS_PRESSURE, f->pressure); 1387 input_sync(dev); 1388 } 1389 1390 static bool alps_is_valid_package_ss4_v2(struct psmouse *psmouse) 1391 { 1392 if (psmouse->pktcnt == 4 && ((psmouse->packet[3] & 0x08) != 0x08)) 1393 return false; 1394 if (psmouse->pktcnt == 6 && ((psmouse->packet[5] & 0x10) != 0x0)) 1395 return false; 1396 return true; 1397 } 1398 1399 static DEFINE_MUTEX(alps_mutex); 1400 1401 static void alps_register_bare_ps2_mouse(struct work_struct *work) 1402 { 1403 struct alps_data *priv = 1404 container_of(work, struct alps_data, dev3_register_work.work); 1405 struct psmouse *psmouse = priv->psmouse; 1406 struct input_dev *dev3; 1407 int error = 0; 1408 1409 mutex_lock(&alps_mutex); 1410 1411 if (priv->dev3) 1412 goto out; 1413 1414 dev3 = input_allocate_device(); 1415 if (!dev3) { 1416 psmouse_err(psmouse, "failed to allocate secondary device\n"); 1417 error = -ENOMEM; 1418 goto out; 1419 } 1420 1421 snprintf(priv->phys3, sizeof(priv->phys3), "%s/%s", 1422 psmouse->ps2dev.serio->phys, 1423 (priv->dev2 ? "input2" : "input1")); 1424 dev3->phys = priv->phys3; 1425 1426 /* 1427 * format of input device name is: "protocol vendor name" 1428 * see function psmouse_switch_protocol() in psmouse-base.c 1429 */ 1430 dev3->name = "PS/2 ALPS Mouse"; 1431 1432 dev3->id.bustype = BUS_I8042; 1433 dev3->id.vendor = 0x0002; 1434 dev3->id.product = PSMOUSE_PS2; 1435 dev3->id.version = 0x0000; 1436 dev3->dev.parent = &psmouse->ps2dev.serio->dev; 1437 1438 input_set_capability(dev3, EV_REL, REL_X); 1439 input_set_capability(dev3, EV_REL, REL_Y); 1440 input_set_capability(dev3, EV_KEY, BTN_LEFT); 1441 input_set_capability(dev3, EV_KEY, BTN_RIGHT); 1442 input_set_capability(dev3, EV_KEY, BTN_MIDDLE); 1443 1444 __set_bit(INPUT_PROP_POINTER, dev3->propbit); 1445 1446 error = input_register_device(dev3); 1447 if (error) { 1448 psmouse_err(psmouse, 1449 "failed to register secondary device: %d\n", 1450 error); 1451 input_free_device(dev3); 1452 goto out; 1453 } 1454 1455 priv->dev3 = dev3; 1456 1457 out: 1458 /* 1459 * Save the error code so that we can detect that we 1460 * already tried to create the device. 1461 */ 1462 if (error) 1463 priv->dev3 = ERR_PTR(error); 1464 1465 mutex_unlock(&alps_mutex); 1466 } 1467 1468 static void alps_report_bare_ps2_packet(struct psmouse *psmouse, 1469 unsigned char packet[], 1470 bool report_buttons) 1471 { 1472 struct alps_data *priv = psmouse->private; 1473 struct input_dev *dev, *dev2 = NULL; 1474 1475 /* Figure out which device to use to report the bare packet */ 1476 if (priv->proto_version == ALPS_PROTO_V2 && 1477 (priv->flags & ALPS_DUALPOINT)) { 1478 /* On V2 devices the DualPoint Stick reports bare packets */ 1479 dev = priv->dev2; 1480 dev2 = psmouse->dev; 1481 } else if (unlikely(IS_ERR_OR_NULL(priv->dev3))) { 1482 /* Register dev3 mouse if we received PS/2 packet first time */ 1483 if (!IS_ERR(priv->dev3)) 1484 psmouse_queue_work(psmouse, &priv->dev3_register_work, 1485 0); 1486 return; 1487 } else { 1488 dev = priv->dev3; 1489 } 1490 1491 if (report_buttons) 1492 alps_report_buttons(dev, dev2, 1493 packet[0] & 1, packet[0] & 2, packet[0] & 4); 1494 1495 psmouse_report_standard_motion(dev, packet); 1496 1497 input_sync(dev); 1498 } 1499 1500 static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse) 1501 { 1502 struct alps_data *priv = psmouse->private; 1503 1504 if (psmouse->pktcnt < 6) 1505 return PSMOUSE_GOOD_DATA; 1506 1507 if (psmouse->pktcnt == 6) { 1508 /* 1509 * Start a timer to flush the packet if it ends up last 1510 * 6-byte packet in the stream. Timer needs to fire 1511 * psmouse core times out itself. 20 ms should be enough 1512 * to decide if we are getting more data or not. 1513 */ 1514 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20)); 1515 return PSMOUSE_GOOD_DATA; 1516 } 1517 1518 del_timer(&priv->timer); 1519 1520 if (psmouse->packet[6] & 0x80) { 1521 1522 /* 1523 * Highest bit is set - that means we either had 1524 * complete ALPS packet and this is start of the 1525 * next packet or we got garbage. 1526 */ 1527 1528 if (((psmouse->packet[3] | 1529 psmouse->packet[4] | 1530 psmouse->packet[5]) & 0x80) || 1531 (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) { 1532 psmouse_dbg(psmouse, 1533 "refusing packet %4ph (suspected interleaved ps/2)\n", 1534 psmouse->packet + 3); 1535 return PSMOUSE_BAD_DATA; 1536 } 1537 1538 priv->process_packet(psmouse); 1539 1540 /* Continue with the next packet */ 1541 psmouse->packet[0] = psmouse->packet[6]; 1542 psmouse->pktcnt = 1; 1543 1544 } else { 1545 1546 /* 1547 * High bit is 0 - that means that we indeed got a PS/2 1548 * packet in the middle of ALPS packet. 1549 * 1550 * There is also possibility that we got 6-byte ALPS 1551 * packet followed by 3-byte packet from trackpoint. We 1552 * can not distinguish between these 2 scenarios but 1553 * because the latter is unlikely to happen in course of 1554 * normal operation (user would need to press all 1555 * buttons on the pad and start moving trackpoint 1556 * without touching the pad surface) we assume former. 1557 * Even if we are wrong the wost thing that would happen 1558 * the cursor would jump but we should not get protocol 1559 * de-synchronization. 1560 */ 1561 1562 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3], 1563 false); 1564 1565 /* 1566 * Continue with the standard ALPS protocol handling, 1567 * but make sure we won't process it as an interleaved 1568 * packet again, which may happen if all buttons are 1569 * pressed. To avoid this let's reset the 4th bit which 1570 * is normally 1. 1571 */ 1572 psmouse->packet[3] = psmouse->packet[6] & 0xf7; 1573 psmouse->pktcnt = 4; 1574 } 1575 1576 return PSMOUSE_GOOD_DATA; 1577 } 1578 1579 static void alps_flush_packet(struct timer_list *t) 1580 { 1581 struct alps_data *priv = from_timer(priv, t, timer); 1582 struct psmouse *psmouse = priv->psmouse; 1583 1584 serio_pause_rx(psmouse->ps2dev.serio); 1585 1586 if (psmouse->pktcnt == psmouse->pktsize) { 1587 1588 /* 1589 * We did not any more data in reasonable amount of time. 1590 * Validate the last 3 bytes and process as a standard 1591 * ALPS packet. 1592 */ 1593 if ((psmouse->packet[3] | 1594 psmouse->packet[4] | 1595 psmouse->packet[5]) & 0x80) { 1596 psmouse_dbg(psmouse, 1597 "refusing packet %3ph (suspected interleaved ps/2)\n", 1598 psmouse->packet + 3); 1599 } else { 1600 priv->process_packet(psmouse); 1601 } 1602 psmouse->pktcnt = 0; 1603 } 1604 1605 serio_continue_rx(psmouse->ps2dev.serio); 1606 } 1607 1608 static psmouse_ret_t alps_process_byte(struct psmouse *psmouse) 1609 { 1610 struct alps_data *priv = psmouse->private; 1611 1612 /* 1613 * Check if we are dealing with a bare PS/2 packet, presumably from 1614 * a device connected to the external PS/2 port. Because bare PS/2 1615 * protocol does not have enough constant bits to self-synchronize 1616 * properly we only do this if the device is fully synchronized. 1617 * Can not distinguish V8's first byte from PS/2 packet's 1618 */ 1619 if (priv->proto_version != ALPS_PROTO_V8 && 1620 !psmouse->out_of_sync_cnt && 1621 (psmouse->packet[0] & 0xc8) == 0x08) { 1622 1623 if (psmouse->pktcnt == 3) { 1624 alps_report_bare_ps2_packet(psmouse, psmouse->packet, 1625 true); 1626 return PSMOUSE_FULL_PACKET; 1627 } 1628 return PSMOUSE_GOOD_DATA; 1629 } 1630 1631 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */ 1632 1633 if ((priv->flags & ALPS_PS2_INTERLEAVED) && 1634 psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) { 1635 return alps_handle_interleaved_ps2(psmouse); 1636 } 1637 1638 if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) { 1639 psmouse_dbg(psmouse, 1640 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n", 1641 psmouse->packet[0], priv->mask0, priv->byte0); 1642 return PSMOUSE_BAD_DATA; 1643 } 1644 1645 /* Bytes 2 - pktsize should have 0 in the highest bit */ 1646 if (priv->proto_version < ALPS_PROTO_V5 && 1647 psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize && 1648 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) { 1649 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1650 psmouse->pktcnt - 1, 1651 psmouse->packet[psmouse->pktcnt - 1]); 1652 1653 if (priv->proto_version == ALPS_PROTO_V3_RUSHMORE && 1654 psmouse->pktcnt == psmouse->pktsize) { 1655 /* 1656 * Some Dell boxes, such as Latitude E6440 or E7440 1657 * with closed lid, quite often smash last byte of 1658 * otherwise valid packet with 0xff. Given that the 1659 * next packet is very likely to be valid let's 1660 * report PSMOUSE_FULL_PACKET but not process data, 1661 * rather than reporting PSMOUSE_BAD_DATA and 1662 * filling the logs. 1663 */ 1664 return PSMOUSE_FULL_PACKET; 1665 } 1666 1667 return PSMOUSE_BAD_DATA; 1668 } 1669 1670 if ((priv->proto_version == ALPS_PROTO_V7 && 1671 !alps_is_valid_package_v7(psmouse)) || 1672 (priv->proto_version == ALPS_PROTO_V8 && 1673 !alps_is_valid_package_ss4_v2(psmouse))) { 1674 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1675 psmouse->pktcnt - 1, 1676 psmouse->packet[psmouse->pktcnt - 1]); 1677 return PSMOUSE_BAD_DATA; 1678 } 1679 1680 if (psmouse->pktcnt == psmouse->pktsize) { 1681 priv->process_packet(psmouse); 1682 return PSMOUSE_FULL_PACKET; 1683 } 1684 1685 return PSMOUSE_GOOD_DATA; 1686 } 1687 1688 static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble) 1689 { 1690 struct ps2dev *ps2dev = &psmouse->ps2dev; 1691 struct alps_data *priv = psmouse->private; 1692 int command; 1693 unsigned char *param; 1694 unsigned char dummy[4]; 1695 1696 BUG_ON(nibble > 0xf); 1697 1698 command = priv->nibble_commands[nibble].command; 1699 param = (command & 0x0f00) ? 1700 dummy : (unsigned char *)&priv->nibble_commands[nibble].data; 1701 1702 if (ps2_command(ps2dev, param, command)) 1703 return -1; 1704 1705 return 0; 1706 } 1707 1708 static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr) 1709 { 1710 struct ps2dev *ps2dev = &psmouse->ps2dev; 1711 struct alps_data *priv = psmouse->private; 1712 int i, nibble; 1713 1714 if (ps2_command(ps2dev, NULL, priv->addr_command)) 1715 return -1; 1716 1717 for (i = 12; i >= 0; i -= 4) { 1718 nibble = (addr >> i) & 0xf; 1719 if (alps_command_mode_send_nibble(psmouse, nibble)) 1720 return -1; 1721 } 1722 1723 return 0; 1724 } 1725 1726 static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1727 { 1728 struct ps2dev *ps2dev = &psmouse->ps2dev; 1729 unsigned char param[4]; 1730 1731 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1732 return -1; 1733 1734 /* 1735 * The address being read is returned in the first two bytes 1736 * of the result. Check that this address matches the expected 1737 * address. 1738 */ 1739 if (addr != ((param[0] << 8) | param[1])) 1740 return -1; 1741 1742 return param[2]; 1743 } 1744 1745 static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1746 { 1747 if (alps_command_mode_set_addr(psmouse, addr)) 1748 return -1; 1749 return __alps_command_mode_read_reg(psmouse, addr); 1750 } 1751 1752 static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value) 1753 { 1754 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf)) 1755 return -1; 1756 if (alps_command_mode_send_nibble(psmouse, value & 0xf)) 1757 return -1; 1758 return 0; 1759 } 1760 1761 static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr, 1762 u8 value) 1763 { 1764 if (alps_command_mode_set_addr(psmouse, addr)) 1765 return -1; 1766 return __alps_command_mode_write_reg(psmouse, value); 1767 } 1768 1769 static int alps_rpt_cmd(struct psmouse *psmouse, int init_command, 1770 int repeated_command, unsigned char *param) 1771 { 1772 struct ps2dev *ps2dev = &psmouse->ps2dev; 1773 1774 param[0] = 0; 1775 if (init_command && ps2_command(ps2dev, param, init_command)) 1776 return -EIO; 1777 1778 if (ps2_command(ps2dev, NULL, repeated_command) || 1779 ps2_command(ps2dev, NULL, repeated_command) || 1780 ps2_command(ps2dev, NULL, repeated_command)) 1781 return -EIO; 1782 1783 param[0] = param[1] = param[2] = 0xff; 1784 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1785 return -EIO; 1786 1787 psmouse_dbg(psmouse, "%2.2X report: %3ph\n", 1788 repeated_command, param); 1789 return 0; 1790 } 1791 1792 static bool alps_check_valid_firmware_id(unsigned char id[]) 1793 { 1794 if (id[0] == 0x73) 1795 return true; 1796 1797 if (id[0] == 0x88 && 1798 (id[1] == 0x07 || 1799 id[1] == 0x08 || 1800 (id[1] & 0xf0) == 0xb0 || 1801 (id[1] & 0xf0) == 0xc0)) { 1802 return true; 1803 } 1804 1805 return false; 1806 } 1807 1808 static int alps_enter_command_mode(struct psmouse *psmouse) 1809 { 1810 unsigned char param[4]; 1811 1812 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) { 1813 psmouse_err(psmouse, "failed to enter command mode\n"); 1814 return -1; 1815 } 1816 1817 if (!alps_check_valid_firmware_id(param)) { 1818 psmouse_dbg(psmouse, 1819 "unknown response while entering command mode\n"); 1820 return -1; 1821 } 1822 return 0; 1823 } 1824 1825 static inline int alps_exit_command_mode(struct psmouse *psmouse) 1826 { 1827 struct ps2dev *ps2dev = &psmouse->ps2dev; 1828 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) 1829 return -1; 1830 return 0; 1831 } 1832 1833 /* 1834 * For DualPoint devices select the device that should respond to 1835 * subsequent commands. It looks like glidepad is behind stickpointer, 1836 * I'd thought it would be other way around... 1837 */ 1838 static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable) 1839 { 1840 struct ps2dev *ps2dev = &psmouse->ps2dev; 1841 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11; 1842 1843 if (ps2_command(ps2dev, NULL, cmd) || 1844 ps2_command(ps2dev, NULL, cmd) || 1845 ps2_command(ps2dev, NULL, cmd) || 1846 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1847 return -1; 1848 1849 /* we may get 3 more bytes, just ignore them */ 1850 ps2_drain(ps2dev, 3, 100); 1851 1852 return 0; 1853 } 1854 1855 static int alps_absolute_mode_v1_v2(struct psmouse *psmouse) 1856 { 1857 struct ps2dev *ps2dev = &psmouse->ps2dev; 1858 1859 /* Try ALPS magic knock - 4 disable before enable */ 1860 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1861 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1862 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1863 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1864 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) 1865 return -1; 1866 1867 /* 1868 * Switch mouse to poll (remote) mode so motion data will not 1869 * get in our way 1870 */ 1871 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL); 1872 } 1873 1874 static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word) 1875 { 1876 int i, nibble; 1877 1878 /* 1879 * b0-b11 are valid bits, send sequence is inverse. 1880 * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1 1881 */ 1882 for (i = 0; i <= 8; i += 4) { 1883 nibble = (word >> i) & 0xf; 1884 if (alps_command_mode_send_nibble(psmouse, nibble)) 1885 return -1; 1886 } 1887 1888 return 0; 1889 } 1890 1891 static int alps_monitor_mode_write_reg(struct psmouse *psmouse, 1892 u16 addr, u16 value) 1893 { 1894 struct ps2dev *ps2dev = &psmouse->ps2dev; 1895 1896 /* 0x0A0 is the command to write the word */ 1897 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) || 1898 alps_monitor_mode_send_word(psmouse, 0x0A0) || 1899 alps_monitor_mode_send_word(psmouse, addr) || 1900 alps_monitor_mode_send_word(psmouse, value) || 1901 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1902 return -1; 1903 1904 return 0; 1905 } 1906 1907 static int alps_monitor_mode(struct psmouse *psmouse, bool enable) 1908 { 1909 struct ps2dev *ps2dev = &psmouse->ps2dev; 1910 1911 if (enable) { 1912 /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */ 1913 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 1914 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) || 1915 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1916 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1917 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1918 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1919 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1920 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO)) 1921 return -1; 1922 } else { 1923 /* EC to exit monitor mode */ 1924 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP)) 1925 return -1; 1926 } 1927 1928 return 0; 1929 } 1930 1931 static int alps_absolute_mode_v6(struct psmouse *psmouse) 1932 { 1933 u16 reg_val = 0x181; 1934 int ret = -1; 1935 1936 /* enter monitor mode, to write the register */ 1937 if (alps_monitor_mode(psmouse, true)) 1938 return -1; 1939 1940 ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val); 1941 1942 if (alps_monitor_mode(psmouse, false)) 1943 ret = -1; 1944 1945 return ret; 1946 } 1947 1948 static int alps_get_status(struct psmouse *psmouse, char *param) 1949 { 1950 /* Get status: 0xF5 0xF5 0xF5 0xE9 */ 1951 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param)) 1952 return -1; 1953 1954 return 0; 1955 } 1956 1957 /* 1958 * Turn touchpad tapping on or off. The sequences are: 1959 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable, 1960 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable. 1961 * My guess that 0xE9 (GetInfo) is here as a sync point. 1962 * For models that also have stickpointer (DualPoints) its tapping 1963 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but 1964 * we don't fiddle with it. 1965 */ 1966 static int alps_tap_mode(struct psmouse *psmouse, int enable) 1967 { 1968 struct ps2dev *ps2dev = &psmouse->ps2dev; 1969 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES; 1970 unsigned char tap_arg = enable ? 0x0A : 0x00; 1971 unsigned char param[4]; 1972 1973 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) || 1974 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1975 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1976 ps2_command(ps2dev, &tap_arg, cmd)) 1977 return -1; 1978 1979 if (alps_get_status(psmouse, param)) 1980 return -1; 1981 1982 return 0; 1983 } 1984 1985 /* 1986 * alps_poll() - poll the touchpad for current motion packet. 1987 * Used in resync. 1988 */ 1989 static int alps_poll(struct psmouse *psmouse) 1990 { 1991 struct alps_data *priv = psmouse->private; 1992 unsigned char buf[sizeof(psmouse->packet)]; 1993 bool poll_failed; 1994 1995 if (priv->flags & ALPS_PASS) 1996 alps_passthrough_mode_v2(psmouse, true); 1997 1998 poll_failed = ps2_command(&psmouse->ps2dev, buf, 1999 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0; 2000 2001 if (priv->flags & ALPS_PASS) 2002 alps_passthrough_mode_v2(psmouse, false); 2003 2004 if (poll_failed || (buf[0] & priv->mask0) != priv->byte0) 2005 return -1; 2006 2007 if ((psmouse->badbyte & 0xc8) == 0x08) { 2008 /* 2009 * Poll the track stick ... 2010 */ 2011 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8))) 2012 return -1; 2013 } 2014 2015 memcpy(psmouse->packet, buf, sizeof(buf)); 2016 return 0; 2017 } 2018 2019 static int alps_hw_init_v1_v2(struct psmouse *psmouse) 2020 { 2021 struct alps_data *priv = psmouse->private; 2022 2023 if ((priv->flags & ALPS_PASS) && 2024 alps_passthrough_mode_v2(psmouse, true)) { 2025 return -1; 2026 } 2027 2028 if (alps_tap_mode(psmouse, true)) { 2029 psmouse_warn(psmouse, "Failed to enable hardware tapping\n"); 2030 return -1; 2031 } 2032 2033 if (alps_absolute_mode_v1_v2(psmouse)) { 2034 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 2035 return -1; 2036 } 2037 2038 if ((priv->flags & ALPS_PASS) && 2039 alps_passthrough_mode_v2(psmouse, false)) { 2040 return -1; 2041 } 2042 2043 /* ALPS needs stream mode, otherwise it won't report any data */ 2044 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) { 2045 psmouse_err(psmouse, "Failed to enable stream mode\n"); 2046 return -1; 2047 } 2048 2049 return 0; 2050 } 2051 2052 static int alps_hw_init_v6(struct psmouse *psmouse) 2053 { 2054 unsigned char param[2] = {0xC8, 0x14}; 2055 2056 /* Enter passthrough mode to let trackpoint enter 6byte raw mode */ 2057 if (alps_passthrough_mode_v2(psmouse, true)) 2058 return -1; 2059 2060 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2061 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2062 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2063 ps2_command(&psmouse->ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2064 ps2_command(&psmouse->ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 2065 return -1; 2066 2067 if (alps_passthrough_mode_v2(psmouse, false)) 2068 return -1; 2069 2070 if (alps_absolute_mode_v6(psmouse)) { 2071 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 2072 return -1; 2073 } 2074 2075 return 0; 2076 } 2077 2078 /* 2079 * Enable or disable passthrough mode to the trackstick. 2080 */ 2081 static int alps_passthrough_mode_v3(struct psmouse *psmouse, 2082 int reg_base, bool enable) 2083 { 2084 int reg_val, ret = -1; 2085 2086 if (alps_enter_command_mode(psmouse)) 2087 return -1; 2088 2089 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008); 2090 if (reg_val == -1) 2091 goto error; 2092 2093 if (enable) 2094 reg_val |= 0x01; 2095 else 2096 reg_val &= ~0x01; 2097 2098 ret = __alps_command_mode_write_reg(psmouse, reg_val); 2099 2100 error: 2101 if (alps_exit_command_mode(psmouse)) 2102 ret = -1; 2103 return ret; 2104 } 2105 2106 /* Must be in command mode when calling this function */ 2107 static int alps_absolute_mode_v3(struct psmouse *psmouse) 2108 { 2109 int reg_val; 2110 2111 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 2112 if (reg_val == -1) 2113 return -1; 2114 2115 reg_val |= 0x06; 2116 if (__alps_command_mode_write_reg(psmouse, reg_val)) 2117 return -1; 2118 2119 return 0; 2120 } 2121 2122 static int alps_probe_trackstick_v3_v7(struct psmouse *psmouse, int reg_base) 2123 { 2124 int ret = -EIO, reg_val; 2125 2126 if (alps_enter_command_mode(psmouse)) 2127 goto error; 2128 2129 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08); 2130 if (reg_val == -1) 2131 goto error; 2132 2133 /* bit 7: trackstick is present */ 2134 ret = reg_val & 0x80 ? 0 : -ENODEV; 2135 2136 error: 2137 alps_exit_command_mode(psmouse); 2138 return ret; 2139 } 2140 2141 static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base) 2142 { 2143 struct ps2dev *ps2dev = &psmouse->ps2dev; 2144 int ret = 0; 2145 unsigned char param[4]; 2146 2147 if (alps_passthrough_mode_v3(psmouse, reg_base, true)) 2148 return -EIO; 2149 2150 /* 2151 * E7 report for the trackstick 2152 * 2153 * There have been reports of failures to seem to trace back 2154 * to the above trackstick check failing. When these occur 2155 * this E7 report fails, so when that happens we continue 2156 * with the assumption that there isn't a trackstick after 2157 * all. 2158 */ 2159 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) { 2160 psmouse_warn(psmouse, "Failed to initialize trackstick (E7 report failed)\n"); 2161 ret = -ENODEV; 2162 } else { 2163 psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param); 2164 2165 /* 2166 * Not sure what this does, but it is absolutely 2167 * essential. Without it, the touchpad does not 2168 * work at all and the trackstick just emits normal 2169 * PS/2 packets. 2170 */ 2171 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2172 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2173 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2174 alps_command_mode_send_nibble(psmouse, 0x9) || 2175 alps_command_mode_send_nibble(psmouse, 0x4)) { 2176 psmouse_err(psmouse, 2177 "Error sending magic E6 sequence\n"); 2178 ret = -EIO; 2179 goto error; 2180 } 2181 2182 /* 2183 * This ensures the trackstick packets are in the format 2184 * supported by this driver. If bit 1 isn't set the packet 2185 * format is different. 2186 */ 2187 if (alps_enter_command_mode(psmouse) || 2188 alps_command_mode_write_reg(psmouse, 2189 reg_base + 0x08, 0x82) || 2190 alps_exit_command_mode(psmouse)) 2191 ret = -EIO; 2192 } 2193 2194 error: 2195 if (alps_passthrough_mode_v3(psmouse, reg_base, false)) 2196 ret = -EIO; 2197 2198 return ret; 2199 } 2200 2201 static int alps_hw_init_v3(struct psmouse *psmouse) 2202 { 2203 struct alps_data *priv = psmouse->private; 2204 struct ps2dev *ps2dev = &psmouse->ps2dev; 2205 int reg_val; 2206 unsigned char param[4]; 2207 2208 if ((priv->flags & ALPS_DUALPOINT) && 2209 alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO) 2210 goto error; 2211 2212 if (alps_enter_command_mode(psmouse) || 2213 alps_absolute_mode_v3(psmouse)) { 2214 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 2215 goto error; 2216 } 2217 2218 reg_val = alps_command_mode_read_reg(psmouse, 0x0006); 2219 if (reg_val == -1) 2220 goto error; 2221 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 2222 goto error; 2223 2224 reg_val = alps_command_mode_read_reg(psmouse, 0x0007); 2225 if (reg_val == -1) 2226 goto error; 2227 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 2228 goto error; 2229 2230 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1) 2231 goto error; 2232 if (__alps_command_mode_write_reg(psmouse, 0x04)) 2233 goto error; 2234 2235 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1) 2236 goto error; 2237 if (__alps_command_mode_write_reg(psmouse, 0x03)) 2238 goto error; 2239 2240 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1) 2241 goto error; 2242 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03)) 2243 goto error; 2244 2245 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1) 2246 goto error; 2247 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04)) 2248 goto error; 2249 2250 alps_exit_command_mode(psmouse); 2251 2252 /* Set rate and enable data reporting */ 2253 param[0] = 0x64; 2254 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 2255 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 2256 psmouse_err(psmouse, "Failed to enable data reporting\n"); 2257 return -1; 2258 } 2259 2260 return 0; 2261 2262 error: 2263 /* 2264 * Leaving the touchpad in command mode will essentially render 2265 * it unusable until the machine reboots, so exit it here just 2266 * to be safe 2267 */ 2268 alps_exit_command_mode(psmouse); 2269 return -1; 2270 } 2271 2272 static int alps_get_v3_v7_resolution(struct psmouse *psmouse, int reg_pitch) 2273 { 2274 int reg, x_pitch, y_pitch, x_electrode, y_electrode, x_phys, y_phys; 2275 struct alps_data *priv = psmouse->private; 2276 2277 reg = alps_command_mode_read_reg(psmouse, reg_pitch); 2278 if (reg < 0) 2279 return reg; 2280 2281 x_pitch = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ 2282 x_pitch = 50 + 2 * x_pitch; /* In 0.1 mm units */ 2283 2284 y_pitch = (char)reg >> 4; /* sign extend upper 4 bits */ 2285 y_pitch = 36 + 2 * y_pitch; /* In 0.1 mm units */ 2286 2287 reg = alps_command_mode_read_reg(psmouse, reg_pitch + 1); 2288 if (reg < 0) 2289 return reg; 2290 2291 x_electrode = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ 2292 x_electrode = 17 + x_electrode; 2293 2294 y_electrode = (char)reg >> 4; /* sign extend upper 4 bits */ 2295 y_electrode = 13 + y_electrode; 2296 2297 x_phys = x_pitch * (x_electrode - 1); /* In 0.1 mm units */ 2298 y_phys = y_pitch * (y_electrode - 1); /* In 0.1 mm units */ 2299 2300 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ 2301 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ 2302 2303 psmouse_dbg(psmouse, 2304 "pitch %dx%d num-electrodes %dx%d physical size %dx%d mm res %dx%d\n", 2305 x_pitch, y_pitch, x_electrode, y_electrode, 2306 x_phys / 10, y_phys / 10, priv->x_res, priv->y_res); 2307 2308 return 0; 2309 } 2310 2311 static int alps_hw_init_rushmore_v3(struct psmouse *psmouse) 2312 { 2313 struct alps_data *priv = psmouse->private; 2314 struct ps2dev *ps2dev = &psmouse->ps2dev; 2315 int reg_val, ret = -1; 2316 2317 if (priv->flags & ALPS_DUALPOINT) { 2318 reg_val = alps_setup_trackstick_v3(psmouse, 2319 ALPS_REG_BASE_RUSHMORE); 2320 if (reg_val == -EIO) 2321 goto error; 2322 } 2323 2324 if (alps_enter_command_mode(psmouse) || 2325 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 || 2326 alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00)) 2327 goto error; 2328 2329 if (alps_get_v3_v7_resolution(psmouse, 0xc2da)) 2330 goto error; 2331 2332 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6); 2333 if (reg_val == -1) 2334 goto error; 2335 if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd)) 2336 goto error; 2337 2338 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 2339 goto error; 2340 2341 /* enter absolute mode */ 2342 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 2343 if (reg_val == -1) 2344 goto error; 2345 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 2346 goto error; 2347 2348 alps_exit_command_mode(psmouse); 2349 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2350 2351 error: 2352 alps_exit_command_mode(psmouse); 2353 return ret; 2354 } 2355 2356 /* Must be in command mode when calling this function */ 2357 static int alps_absolute_mode_v4(struct psmouse *psmouse) 2358 { 2359 int reg_val; 2360 2361 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 2362 if (reg_val == -1) 2363 return -1; 2364 2365 reg_val |= 0x02; 2366 if (__alps_command_mode_write_reg(psmouse, reg_val)) 2367 return -1; 2368 2369 return 0; 2370 } 2371 2372 static int alps_hw_init_v4(struct psmouse *psmouse) 2373 { 2374 struct ps2dev *ps2dev = &psmouse->ps2dev; 2375 unsigned char param[4]; 2376 2377 if (alps_enter_command_mode(psmouse)) 2378 goto error; 2379 2380 if (alps_absolute_mode_v4(psmouse)) { 2381 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 2382 goto error; 2383 } 2384 2385 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c)) 2386 goto error; 2387 2388 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03)) 2389 goto error; 2390 2391 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03)) 2392 goto error; 2393 2394 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15)) 2395 goto error; 2396 2397 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01)) 2398 goto error; 2399 2400 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03)) 2401 goto error; 2402 2403 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03)) 2404 goto error; 2405 2406 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03)) 2407 goto error; 2408 2409 alps_exit_command_mode(psmouse); 2410 2411 /* 2412 * This sequence changes the output from a 9-byte to an 2413 * 8-byte format. All the same data seems to be present, 2414 * just in a more compact format. 2415 */ 2416 param[0] = 0xc8; 2417 param[1] = 0x64; 2418 param[2] = 0x50; 2419 if (ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2420 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE) || 2421 ps2_command(ps2dev, ¶m[2], PSMOUSE_CMD_SETRATE) || 2422 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) 2423 return -1; 2424 2425 /* Set rate and enable data reporting */ 2426 param[0] = 0x64; 2427 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 2428 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 2429 psmouse_err(psmouse, "Failed to enable data reporting\n"); 2430 return -1; 2431 } 2432 2433 return 0; 2434 2435 error: 2436 /* 2437 * Leaving the touchpad in command mode will essentially render 2438 * it unusable until the machine reboots, so exit it here just 2439 * to be safe 2440 */ 2441 alps_exit_command_mode(psmouse); 2442 return -1; 2443 } 2444 2445 static int alps_get_otp_values_ss4_v2(struct psmouse *psmouse, 2446 unsigned char index, unsigned char otp[]) 2447 { 2448 struct ps2dev *ps2dev = &psmouse->ps2dev; 2449 2450 switch (index) { 2451 case 0: 2452 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2453 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2454 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) 2455 return -1; 2456 2457 break; 2458 2459 case 1: 2460 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2461 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2462 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) 2463 return -1; 2464 2465 break; 2466 } 2467 2468 return 0; 2469 } 2470 2471 static int alps_update_device_area_ss4_v2(unsigned char otp[][4], 2472 struct alps_data *priv) 2473 { 2474 int num_x_electrode; 2475 int num_y_electrode; 2476 int x_pitch, y_pitch, x_phys, y_phys; 2477 2478 if (IS_SS4PLUS_DEV(priv->dev_id)) { 2479 num_x_electrode = 2480 SS4PLUS_NUMSENSOR_XOFFSET + (otp[0][2] & 0x0F); 2481 num_y_electrode = 2482 SS4PLUS_NUMSENSOR_YOFFSET + ((otp[0][2] >> 4) & 0x0F); 2483 2484 priv->x_max = 2485 (num_x_electrode - 1) * SS4PLUS_COUNT_PER_ELECTRODE; 2486 priv->y_max = 2487 (num_y_electrode - 1) * SS4PLUS_COUNT_PER_ELECTRODE; 2488 2489 x_pitch = (otp[0][1] & 0x0F) + SS4PLUS_MIN_PITCH_MM; 2490 y_pitch = ((otp[0][1] >> 4) & 0x0F) + SS4PLUS_MIN_PITCH_MM; 2491 2492 } else { 2493 num_x_electrode = 2494 SS4_NUMSENSOR_XOFFSET + (otp[1][0] & 0x0F); 2495 num_y_electrode = 2496 SS4_NUMSENSOR_YOFFSET + ((otp[1][0] >> 4) & 0x0F); 2497 2498 priv->x_max = 2499 (num_x_electrode - 1) * SS4_COUNT_PER_ELECTRODE; 2500 priv->y_max = 2501 (num_y_electrode - 1) * SS4_COUNT_PER_ELECTRODE; 2502 2503 x_pitch = ((otp[1][2] >> 2) & 0x07) + SS4_MIN_PITCH_MM; 2504 y_pitch = ((otp[1][2] >> 5) & 0x07) + SS4_MIN_PITCH_MM; 2505 } 2506 2507 x_phys = x_pitch * (num_x_electrode - 1); /* In 0.1 mm units */ 2508 y_phys = y_pitch * (num_y_electrode - 1); /* In 0.1 mm units */ 2509 2510 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ 2511 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ 2512 2513 return 0; 2514 } 2515 2516 static int alps_update_btn_info_ss4_v2(unsigned char otp[][4], 2517 struct alps_data *priv) 2518 { 2519 unsigned char is_btnless; 2520 2521 if (IS_SS4PLUS_DEV(priv->dev_id)) 2522 is_btnless = (otp[1][0] >> 1) & 0x01; 2523 else 2524 is_btnless = (otp[1][1] >> 3) & 0x01; 2525 2526 if (is_btnless) 2527 priv->flags |= ALPS_BUTTONPAD; 2528 2529 return 0; 2530 } 2531 2532 static int alps_update_dual_info_ss4_v2(unsigned char otp[][4], 2533 struct alps_data *priv, 2534 struct psmouse *psmouse) 2535 { 2536 bool is_dual = false; 2537 int reg_val = 0; 2538 struct ps2dev *ps2dev = &psmouse->ps2dev; 2539 2540 if (IS_SS4PLUS_DEV(priv->dev_id)) { 2541 is_dual = (otp[0][0] >> 4) & 0x01; 2542 2543 if (!is_dual) { 2544 /* For support TrackStick of Thinkpad L/E series */ 2545 if (alps_exit_command_mode(psmouse) == 0 && 2546 alps_enter_command_mode(psmouse) == 0) { 2547 reg_val = alps_command_mode_read_reg(psmouse, 2548 0xD7); 2549 } 2550 alps_exit_command_mode(psmouse); 2551 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2552 2553 if (reg_val == 0x0C || reg_val == 0x1D) 2554 is_dual = true; 2555 } 2556 } 2557 2558 if (is_dual) 2559 priv->flags |= ALPS_DUALPOINT | 2560 ALPS_DUALPOINT_WITH_PRESSURE; 2561 2562 return 0; 2563 } 2564 2565 static int alps_set_defaults_ss4_v2(struct psmouse *psmouse, 2566 struct alps_data *priv) 2567 { 2568 unsigned char otp[2][4]; 2569 2570 memset(otp, 0, sizeof(otp)); 2571 2572 if (alps_get_otp_values_ss4_v2(psmouse, 1, &otp[1][0]) || 2573 alps_get_otp_values_ss4_v2(psmouse, 0, &otp[0][0])) 2574 return -1; 2575 2576 alps_update_device_area_ss4_v2(otp, priv); 2577 2578 alps_update_btn_info_ss4_v2(otp, priv); 2579 2580 alps_update_dual_info_ss4_v2(otp, priv, psmouse); 2581 2582 return 0; 2583 } 2584 2585 static int alps_dolphin_get_device_area(struct psmouse *psmouse, 2586 struct alps_data *priv) 2587 { 2588 struct ps2dev *ps2dev = &psmouse->ps2dev; 2589 unsigned char param[4] = {0}; 2590 int num_x_electrode, num_y_electrode; 2591 2592 if (alps_enter_command_mode(psmouse)) 2593 return -1; 2594 2595 param[0] = 0x0a; 2596 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 2597 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2598 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2599 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2600 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE)) 2601 return -1; 2602 2603 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 2604 return -1; 2605 2606 /* 2607 * Dolphin's sensor line number is not fixed. It can be calculated 2608 * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET. 2609 * Further more, we can get device's x_max and y_max by multiplying 2610 * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE. 2611 * 2612 * e.g. When we get register's sensor_x = 11 & sensor_y = 8, 2613 * real sensor line number X = 11 + 8 = 19, and 2614 * real sensor line number Y = 8 + 1 = 9. 2615 * So, x_max = (19 - 1) * 64 = 1152, and 2616 * y_max = (9 - 1) * 64 = 512. 2617 */ 2618 num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F); 2619 num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F); 2620 priv->x_bits = num_x_electrode; 2621 priv->y_bits = num_y_electrode; 2622 priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2623 priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2624 2625 if (alps_exit_command_mode(psmouse)) 2626 return -1; 2627 2628 return 0; 2629 } 2630 2631 static int alps_hw_init_dolphin_v1(struct psmouse *psmouse) 2632 { 2633 struct ps2dev *ps2dev = &psmouse->ps2dev; 2634 unsigned char param[2]; 2635 2636 /* This is dolphin "v1" as empirically defined by florin9doi */ 2637 param[0] = 0x64; 2638 param[1] = 0x28; 2639 2640 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2641 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2642 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 2643 return -1; 2644 2645 return 0; 2646 } 2647 2648 static int alps_hw_init_v7(struct psmouse *psmouse) 2649 { 2650 struct ps2dev *ps2dev = &psmouse->ps2dev; 2651 int reg_val, ret = -1; 2652 2653 if (alps_enter_command_mode(psmouse) || 2654 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1) 2655 goto error; 2656 2657 if (alps_get_v3_v7_resolution(psmouse, 0xc397)) 2658 goto error; 2659 2660 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 2661 goto error; 2662 2663 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 2664 if (reg_val == -1) 2665 goto error; 2666 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 2667 goto error; 2668 2669 alps_exit_command_mode(psmouse); 2670 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2671 2672 error: 2673 alps_exit_command_mode(psmouse); 2674 return ret; 2675 } 2676 2677 static int alps_hw_init_ss4_v2(struct psmouse *psmouse) 2678 { 2679 struct ps2dev *ps2dev = &psmouse->ps2dev; 2680 char param[2] = {0x64, 0x28}; 2681 int ret = -1; 2682 2683 /* enter absolute mode */ 2684 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2685 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2686 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2687 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) { 2688 goto error; 2689 } 2690 2691 /* T.B.D. Decread noise packet number, delete in the future */ 2692 if (alps_exit_command_mode(psmouse) || 2693 alps_enter_command_mode(psmouse) || 2694 alps_command_mode_write_reg(psmouse, 0x001D, 0x20)) { 2695 goto error; 2696 } 2697 alps_exit_command_mode(psmouse); 2698 2699 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2700 2701 error: 2702 alps_exit_command_mode(psmouse); 2703 return ret; 2704 } 2705 2706 static int alps_set_protocol(struct psmouse *psmouse, 2707 struct alps_data *priv, 2708 const struct alps_protocol_info *protocol) 2709 { 2710 psmouse->private = priv; 2711 2712 timer_setup(&priv->timer, alps_flush_packet, 0); 2713 2714 priv->proto_version = protocol->version; 2715 priv->byte0 = protocol->byte0; 2716 priv->mask0 = protocol->mask0; 2717 priv->flags = protocol->flags; 2718 2719 priv->x_max = 2000; 2720 priv->y_max = 1400; 2721 priv->x_bits = 15; 2722 priv->y_bits = 11; 2723 2724 switch (priv->proto_version) { 2725 case ALPS_PROTO_V1: 2726 case ALPS_PROTO_V2: 2727 priv->hw_init = alps_hw_init_v1_v2; 2728 priv->process_packet = alps_process_packet_v1_v2; 2729 priv->set_abs_params = alps_set_abs_params_st; 2730 priv->x_max = 1023; 2731 priv->y_max = 767; 2732 if (dmi_check_system(alps_dmi_has_separate_stick_buttons)) 2733 priv->flags |= ALPS_STICK_BITS; 2734 break; 2735 2736 case ALPS_PROTO_V3: 2737 priv->hw_init = alps_hw_init_v3; 2738 priv->process_packet = alps_process_packet_v3; 2739 priv->set_abs_params = alps_set_abs_params_semi_mt; 2740 priv->decode_fields = alps_decode_pinnacle; 2741 priv->nibble_commands = alps_v3_nibble_commands; 2742 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2743 2744 if (alps_probe_trackstick_v3_v7(psmouse, 2745 ALPS_REG_BASE_PINNACLE) < 0) 2746 priv->flags &= ~ALPS_DUALPOINT; 2747 2748 break; 2749 2750 case ALPS_PROTO_V3_RUSHMORE: 2751 priv->hw_init = alps_hw_init_rushmore_v3; 2752 priv->process_packet = alps_process_packet_v3; 2753 priv->set_abs_params = alps_set_abs_params_semi_mt; 2754 priv->decode_fields = alps_decode_rushmore; 2755 priv->nibble_commands = alps_v3_nibble_commands; 2756 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2757 priv->x_bits = 16; 2758 priv->y_bits = 12; 2759 2760 if (alps_probe_trackstick_v3_v7(psmouse, 2761 ALPS_REG_BASE_RUSHMORE) < 0) 2762 priv->flags &= ~ALPS_DUALPOINT; 2763 2764 break; 2765 2766 case ALPS_PROTO_V4: 2767 priv->hw_init = alps_hw_init_v4; 2768 priv->process_packet = alps_process_packet_v4; 2769 priv->set_abs_params = alps_set_abs_params_semi_mt; 2770 priv->nibble_commands = alps_v4_nibble_commands; 2771 priv->addr_command = PSMOUSE_CMD_DISABLE; 2772 break; 2773 2774 case ALPS_PROTO_V5: 2775 priv->hw_init = alps_hw_init_dolphin_v1; 2776 priv->process_packet = alps_process_touchpad_packet_v3_v5; 2777 priv->decode_fields = alps_decode_dolphin; 2778 priv->set_abs_params = alps_set_abs_params_semi_mt; 2779 priv->nibble_commands = alps_v3_nibble_commands; 2780 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2781 priv->x_bits = 23; 2782 priv->y_bits = 12; 2783 2784 if (alps_dolphin_get_device_area(psmouse, priv)) 2785 return -EIO; 2786 2787 break; 2788 2789 case ALPS_PROTO_V6: 2790 priv->hw_init = alps_hw_init_v6; 2791 priv->process_packet = alps_process_packet_v6; 2792 priv->set_abs_params = alps_set_abs_params_st; 2793 priv->nibble_commands = alps_v6_nibble_commands; 2794 priv->x_max = 2047; 2795 priv->y_max = 1535; 2796 break; 2797 2798 case ALPS_PROTO_V7: 2799 priv->hw_init = alps_hw_init_v7; 2800 priv->process_packet = alps_process_packet_v7; 2801 priv->decode_fields = alps_decode_packet_v7; 2802 priv->set_abs_params = alps_set_abs_params_v7; 2803 priv->nibble_commands = alps_v3_nibble_commands; 2804 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2805 priv->x_max = 0xfff; 2806 priv->y_max = 0x7ff; 2807 2808 if (priv->fw_ver[1] != 0xba) 2809 priv->flags |= ALPS_BUTTONPAD; 2810 2811 if (alps_probe_trackstick_v3_v7(psmouse, ALPS_REG_BASE_V7) < 0) 2812 priv->flags &= ~ALPS_DUALPOINT; 2813 2814 break; 2815 2816 case ALPS_PROTO_V8: 2817 priv->hw_init = alps_hw_init_ss4_v2; 2818 priv->process_packet = alps_process_packet_ss4_v2; 2819 priv->decode_fields = alps_decode_ss4_v2; 2820 priv->set_abs_params = alps_set_abs_params_ss4_v2; 2821 priv->nibble_commands = alps_v3_nibble_commands; 2822 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2823 2824 if (alps_set_defaults_ss4_v2(psmouse, priv)) 2825 return -EIO; 2826 2827 break; 2828 } 2829 2830 return 0; 2831 } 2832 2833 static const struct alps_protocol_info *alps_match_table(unsigned char *e7, 2834 unsigned char *ec) 2835 { 2836 const struct alps_model_info *model; 2837 int i; 2838 2839 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) { 2840 model = &alps_model_data[i]; 2841 2842 if (!memcmp(e7, model->signature, sizeof(model->signature))) 2843 return &model->protocol_info; 2844 } 2845 2846 return NULL; 2847 } 2848 2849 static int alps_identify(struct psmouse *psmouse, struct alps_data *priv) 2850 { 2851 const struct alps_protocol_info *protocol; 2852 unsigned char e6[4], e7[4], ec[4]; 2853 int error; 2854 2855 /* 2856 * First try "E6 report". 2857 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed. 2858 * The bits 0-2 of the first byte will be 1s if some buttons are 2859 * pressed. 2860 */ 2861 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2862 PSMOUSE_CMD_SETSCALE11, e6)) 2863 return -EIO; 2864 2865 if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100)) 2866 return -EINVAL; 2867 2868 /* 2869 * Now get the "E7" and "EC" reports. These will uniquely identify 2870 * most ALPS touchpads. 2871 */ 2872 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2873 PSMOUSE_CMD_SETSCALE21, e7) || 2874 alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2875 PSMOUSE_CMD_RESET_WRAP, ec) || 2876 alps_exit_command_mode(psmouse)) 2877 return -EIO; 2878 2879 protocol = alps_match_table(e7, ec); 2880 if (!protocol) { 2881 if (e7[0] == 0x73 && e7[1] == 0x02 && e7[2] == 0x64 && 2882 ec[2] == 0x8a) { 2883 protocol = &alps_v4_protocol_data; 2884 } else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 && 2885 ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) { 2886 protocol = &alps_v5_protocol_data; 2887 } else if (ec[0] == 0x88 && 2888 ((ec[1] & 0xf0) == 0xb0 || (ec[1] & 0xf0) == 0xc0)) { 2889 protocol = &alps_v7_protocol_data; 2890 } else if (ec[0] == 0x88 && ec[1] == 0x08) { 2891 protocol = &alps_v3_rushmore_data; 2892 } else if (ec[0] == 0x88 && ec[1] == 0x07 && 2893 ec[2] >= 0x90 && ec[2] <= 0x9d) { 2894 protocol = &alps_v3_protocol_data; 2895 } else if (e7[0] == 0x73 && e7[1] == 0x03 && 2896 (e7[2] == 0x14 || e7[2] == 0x28)) { 2897 protocol = &alps_v8_protocol_data; 2898 } else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0xc8) { 2899 protocol = &alps_v9_protocol_data; 2900 psmouse_warn(psmouse, 2901 "Unsupported ALPS V9 touchpad: E7=%3ph, EC=%3ph\n", 2902 e7, ec); 2903 return -EINVAL; 2904 } else { 2905 psmouse_dbg(psmouse, 2906 "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec); 2907 return -EINVAL; 2908 } 2909 } 2910 2911 if (priv) { 2912 /* Save Device ID and Firmware version */ 2913 memcpy(priv->dev_id, e7, 3); 2914 memcpy(priv->fw_ver, ec, 3); 2915 error = alps_set_protocol(psmouse, priv, protocol); 2916 if (error) 2917 return error; 2918 } 2919 2920 return 0; 2921 } 2922 2923 static int alps_reconnect(struct psmouse *psmouse) 2924 { 2925 struct alps_data *priv = psmouse->private; 2926 2927 psmouse_reset(psmouse); 2928 2929 if (alps_identify(psmouse, priv) < 0) 2930 return -1; 2931 2932 return priv->hw_init(psmouse); 2933 } 2934 2935 static void alps_disconnect(struct psmouse *psmouse) 2936 { 2937 struct alps_data *priv = psmouse->private; 2938 2939 psmouse_reset(psmouse); 2940 del_timer_sync(&priv->timer); 2941 if (priv->dev2) 2942 input_unregister_device(priv->dev2); 2943 if (!IS_ERR_OR_NULL(priv->dev3)) 2944 input_unregister_device(priv->dev3); 2945 kfree(priv); 2946 } 2947 2948 static void alps_set_abs_params_st(struct alps_data *priv, 2949 struct input_dev *dev1) 2950 { 2951 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0); 2952 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0); 2953 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2954 } 2955 2956 static void alps_set_abs_params_mt_common(struct alps_data *priv, 2957 struct input_dev *dev1) 2958 { 2959 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0); 2960 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0); 2961 2962 input_abs_set_res(dev1, ABS_MT_POSITION_X, priv->x_res); 2963 input_abs_set_res(dev1, ABS_MT_POSITION_Y, priv->y_res); 2964 2965 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit); 2966 set_bit(BTN_TOOL_QUADTAP, dev1->keybit); 2967 } 2968 2969 static void alps_set_abs_params_semi_mt(struct alps_data *priv, 2970 struct input_dev *dev1) 2971 { 2972 alps_set_abs_params_mt_common(priv, dev1); 2973 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2974 2975 input_mt_init_slots(dev1, MAX_TOUCHES, 2976 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 2977 INPUT_MT_SEMI_MT); 2978 } 2979 2980 static void alps_set_abs_params_v7(struct alps_data *priv, 2981 struct input_dev *dev1) 2982 { 2983 alps_set_abs_params_mt_common(priv, dev1); 2984 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2985 2986 input_mt_init_slots(dev1, MAX_TOUCHES, 2987 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 2988 INPUT_MT_TRACK); 2989 2990 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2991 } 2992 2993 static void alps_set_abs_params_ss4_v2(struct alps_data *priv, 2994 struct input_dev *dev1) 2995 { 2996 alps_set_abs_params_mt_common(priv, dev1); 2997 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2998 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2999 3000 input_mt_init_slots(dev1, MAX_TOUCHES, 3001 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 3002 INPUT_MT_TRACK); 3003 } 3004 3005 int alps_init(struct psmouse *psmouse) 3006 { 3007 struct alps_data *priv = psmouse->private; 3008 struct input_dev *dev1 = psmouse->dev; 3009 int error; 3010 3011 error = priv->hw_init(psmouse); 3012 if (error) 3013 goto init_fail; 3014 3015 /* 3016 * Undo part of setup done for us by psmouse core since touchpad 3017 * is not a relative device. 3018 */ 3019 __clear_bit(EV_REL, dev1->evbit); 3020 __clear_bit(REL_X, dev1->relbit); 3021 __clear_bit(REL_Y, dev1->relbit); 3022 3023 /* 3024 * Now set up our capabilities. 3025 */ 3026 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY); 3027 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH); 3028 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER); 3029 dev1->keybit[BIT_WORD(BTN_LEFT)] |= 3030 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); 3031 3032 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS); 3033 3034 priv->set_abs_params(priv, dev1); 3035 3036 if (priv->flags & ALPS_WHEEL) { 3037 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL); 3038 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL); 3039 } 3040 3041 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 3042 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD); 3043 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK); 3044 } 3045 3046 if (priv->flags & ALPS_FOUR_BUTTONS) { 3047 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0); 3048 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1); 3049 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2); 3050 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3); 3051 } else if (priv->flags & ALPS_BUTTONPAD) { 3052 set_bit(INPUT_PROP_BUTTONPAD, dev1->propbit); 3053 clear_bit(BTN_RIGHT, dev1->keybit); 3054 } else { 3055 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE); 3056 } 3057 3058 if (priv->flags & ALPS_DUALPOINT) { 3059 struct input_dev *dev2; 3060 3061 dev2 = input_allocate_device(); 3062 if (!dev2) { 3063 psmouse_err(psmouse, 3064 "failed to allocate trackstick device\n"); 3065 error = -ENOMEM; 3066 goto init_fail; 3067 } 3068 3069 snprintf(priv->phys2, sizeof(priv->phys2), "%s/input1", 3070 psmouse->ps2dev.serio->phys); 3071 dev2->phys = priv->phys2; 3072 3073 /* 3074 * format of input device name is: "protocol vendor name" 3075 * see function psmouse_switch_protocol() in psmouse-base.c 3076 */ 3077 dev2->name = "AlpsPS/2 ALPS DualPoint Stick"; 3078 3079 dev2->id.bustype = BUS_I8042; 3080 dev2->id.vendor = 0x0002; 3081 dev2->id.product = PSMOUSE_ALPS; 3082 dev2->id.version = priv->proto_version; 3083 dev2->dev.parent = &psmouse->ps2dev.serio->dev; 3084 3085 input_set_capability(dev2, EV_REL, REL_X); 3086 input_set_capability(dev2, EV_REL, REL_Y); 3087 if (priv->flags & ALPS_DUALPOINT_WITH_PRESSURE) { 3088 input_set_capability(dev2, EV_ABS, ABS_PRESSURE); 3089 input_set_abs_params(dev2, ABS_PRESSURE, 0, 127, 0, 0); 3090 } 3091 input_set_capability(dev2, EV_KEY, BTN_LEFT); 3092 input_set_capability(dev2, EV_KEY, BTN_RIGHT); 3093 input_set_capability(dev2, EV_KEY, BTN_MIDDLE); 3094 3095 __set_bit(INPUT_PROP_POINTER, dev2->propbit); 3096 __set_bit(INPUT_PROP_POINTING_STICK, dev2->propbit); 3097 3098 error = input_register_device(dev2); 3099 if (error) { 3100 psmouse_err(psmouse, 3101 "failed to register trackstick device: %d\n", 3102 error); 3103 input_free_device(dev2); 3104 goto init_fail; 3105 } 3106 3107 priv->dev2 = dev2; 3108 } 3109 3110 priv->psmouse = psmouse; 3111 3112 INIT_DELAYED_WORK(&priv->dev3_register_work, 3113 alps_register_bare_ps2_mouse); 3114 3115 psmouse->protocol_handler = alps_process_byte; 3116 psmouse->poll = alps_poll; 3117 psmouse->disconnect = alps_disconnect; 3118 psmouse->reconnect = alps_reconnect; 3119 psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6; 3120 3121 /* We are having trouble resyncing ALPS touchpads so disable it for now */ 3122 psmouse->resync_time = 0; 3123 3124 /* Allow 2 invalid packets without resetting device */ 3125 psmouse->resetafter = psmouse->pktsize * 2; 3126 3127 return 0; 3128 3129 init_fail: 3130 psmouse_reset(psmouse); 3131 /* 3132 * Even though we did not allocate psmouse->private we do free 3133 * it here. 3134 */ 3135 kfree(psmouse->private); 3136 psmouse->private = NULL; 3137 return error; 3138 } 3139 3140 int alps_detect(struct psmouse *psmouse, bool set_properties) 3141 { 3142 struct alps_data *priv; 3143 int error; 3144 3145 error = alps_identify(psmouse, NULL); 3146 if (error) 3147 return error; 3148 3149 /* 3150 * Reset the device to make sure it is fully operational: 3151 * on some laptops, like certain Dell Latitudes, we may 3152 * fail to properly detect presence of trackstick if device 3153 * has not been reset. 3154 */ 3155 psmouse_reset(psmouse); 3156 3157 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL); 3158 if (!priv) 3159 return -ENOMEM; 3160 3161 error = alps_identify(psmouse, priv); 3162 if (error) { 3163 kfree(priv); 3164 return error; 3165 } 3166 3167 if (set_properties) { 3168 psmouse->vendor = "ALPS"; 3169 psmouse->name = priv->flags & ALPS_DUALPOINT ? 3170 "DualPoint TouchPad" : "GlidePoint"; 3171 psmouse->model = priv->proto_version; 3172 } else { 3173 /* 3174 * Destroy alps_data structure we allocated earlier since 3175 * this was just a "trial run". Otherwise we'll keep it 3176 * to be used by alps_init() which has to be called if 3177 * we succeed and set_properties is true. 3178 */ 3179 kfree(priv); 3180 psmouse->private = NULL; 3181 } 3182 3183 return 0; 3184 } 3185 3186