1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * ALPS touchpad PS/2 mouse driver 4 * 5 * Copyright (c) 2003 Neil Brown <neilb@cse.unsw.edu.au> 6 * Copyright (c) 2003-2005 Peter Osterlund <petero2@telia.com> 7 * Copyright (c) 2004 Dmitry Torokhov <dtor@mail.ru> 8 * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz> 9 * Copyright (c) 2009 Sebastian Kapfer <sebastian_kapfer@gmx.net> 10 * 11 * ALPS detection, tap switching and status querying info is taken from 12 * tpconfig utility (by C. Scott Ananian and Bruce Kall). 13 */ 14 15 #include <linux/slab.h> 16 #include <linux/input.h> 17 #include <linux/input/mt.h> 18 #include <linux/serio.h> 19 #include <linux/libps2.h> 20 #include <linux/dmi.h> 21 22 #include "psmouse.h" 23 #include "alps.h" 24 #include "trackpoint.h" 25 26 /* 27 * Definitions for ALPS version 3 and 4 command mode protocol 28 */ 29 #define ALPS_CMD_NIBBLE_10 0x01f2 30 31 #define ALPS_REG_BASE_RUSHMORE 0xc2c0 32 #define ALPS_REG_BASE_V7 0xc2c0 33 #define ALPS_REG_BASE_PINNACLE 0x0000 34 35 static const struct alps_nibble_commands alps_v3_nibble_commands[] = { 36 { PSMOUSE_CMD_SETPOLL, 0x00 }, /* 0 */ 37 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */ 38 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */ 39 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */ 40 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */ 41 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */ 42 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */ 43 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */ 44 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */ 45 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */ 46 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */ 47 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */ 48 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */ 49 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */ 50 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */ 51 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 52 }; 53 54 static const struct alps_nibble_commands alps_v4_nibble_commands[] = { 55 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */ 56 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */ 57 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */ 58 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */ 59 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */ 60 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */ 61 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */ 62 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */ 63 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */ 64 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */ 65 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */ 66 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */ 67 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */ 68 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */ 69 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */ 70 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 71 }; 72 73 static const struct alps_nibble_commands alps_v6_nibble_commands[] = { 74 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */ 75 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 1 */ 76 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 2 */ 77 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 3 */ 78 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 4 */ 79 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 5 */ 80 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 6 */ 81 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 7 */ 82 { PSMOUSE_CMD_GETID, 0x00 }, /* 8 */ 83 { PSMOUSE_CMD_GETINFO, 0x00 }, /* 9 */ 84 { PSMOUSE_CMD_SETRES, 0x00 }, /* a */ 85 { PSMOUSE_CMD_SETRES, 0x01 }, /* b */ 86 { PSMOUSE_CMD_SETRES, 0x02 }, /* c */ 87 { PSMOUSE_CMD_SETRES, 0x03 }, /* d */ 88 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* e */ 89 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 90 }; 91 92 93 #define ALPS_DUALPOINT 0x02 /* touchpad has trackstick */ 94 #define ALPS_PASS 0x04 /* device has a pass-through port */ 95 96 #define ALPS_WHEEL 0x08 /* hardware wheel present */ 97 #define ALPS_FW_BK_1 0x10 /* front & back buttons present */ 98 #define ALPS_FW_BK_2 0x20 /* front & back buttons present */ 99 #define ALPS_FOUR_BUTTONS 0x40 /* 4 direction button present */ 100 #define ALPS_PS2_INTERLEAVED 0x80 /* 3-byte PS/2 packet interleaved with 101 6-byte ALPS packet */ 102 #define ALPS_STICK_BITS 0x100 /* separate stick button bits */ 103 #define ALPS_BUTTONPAD 0x200 /* device is a clickpad */ 104 #define ALPS_DUALPOINT_WITH_PRESSURE 0x400 /* device can report trackpoint pressure */ 105 106 static const struct alps_model_info alps_model_data[] = { 107 /* 108 * XXX This entry is suspicious. First byte has zero lower nibble, 109 * which is what a normal mouse would report. Also, the value 0x0e 110 * isn't valid per PS/2 spec. 111 */ 112 { { 0x20, 0x02, 0x0e }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, 113 114 { { 0x22, 0x02, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, 115 { { 0x22, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D600 */ 116 { { 0x32, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Toshiba Salellite Pro M10 */ 117 { { 0x33, 0x02, 0x0a }, { ALPS_PROTO_V1, 0x88, 0xf8, 0 } }, /* UMAX-530T */ 118 { { 0x52, 0x01, 0x14 }, { ALPS_PROTO_V2, 0xff, 0xff, 119 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, /* Toshiba Tecra A11-11L */ 120 { { 0x53, 0x02, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 121 { { 0x53, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 122 { { 0x60, 0x03, 0xc8 }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, /* HP ze1115 */ 123 { { 0x62, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xcf, 0xcf, 124 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, /* Dell Latitude E5500, E6400, E6500, Precision M4400 */ 125 { { 0x63, 0x02, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 126 { { 0x63, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 127 { { 0x63, 0x02, 0x28 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Fujitsu Siemens S6010 */ 128 { { 0x63, 0x02, 0x3c }, { ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL } }, /* Toshiba Satellite S2400-103 */ 129 { { 0x63, 0x02, 0x50 }, { ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 } }, /* NEC Versa L320 */ 130 { { 0x63, 0x02, 0x64 }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 131 { { 0x63, 0x03, 0xc8 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D800 */ 132 { { 0x73, 0x00, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT } }, /* ThinkPad R61 8918-5QG */ 133 { { 0x73, 0x00, 0x14 }, { ALPS_PROTO_V6, 0xff, 0xff, ALPS_DUALPOINT } }, /* Dell XT2 */ 134 { { 0x73, 0x02, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 135 { { 0x73, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Ahtec Laptop */ 136 { { 0x73, 0x02, 0x50 }, { ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS } }, /* Dell Vostro 1400 */ 137 }; 138 139 static const struct alps_protocol_info alps_v3_protocol_data = { 140 ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT | ALPS_DUALPOINT_WITH_PRESSURE 141 }; 142 143 static const struct alps_protocol_info alps_v3_rushmore_data = { 144 ALPS_PROTO_V3_RUSHMORE, 0x8f, 0x8f, ALPS_DUALPOINT | ALPS_DUALPOINT_WITH_PRESSURE 145 }; 146 147 static const struct alps_protocol_info alps_v4_protocol_data = { 148 ALPS_PROTO_V4, 0x8f, 0x8f, 0 149 }; 150 151 static const struct alps_protocol_info alps_v5_protocol_data = { 152 ALPS_PROTO_V5, 0xc8, 0xd8, 0 153 }; 154 155 static const struct alps_protocol_info alps_v7_protocol_data = { 156 ALPS_PROTO_V7, 0x48, 0x48, ALPS_DUALPOINT | ALPS_DUALPOINT_WITH_PRESSURE 157 }; 158 159 static const struct alps_protocol_info alps_v8_protocol_data = { 160 ALPS_PROTO_V8, 0x18, 0x18, 0 161 }; 162 163 static const struct alps_protocol_info alps_v9_protocol_data = { 164 ALPS_PROTO_V9, 0xc8, 0xc8, 0 165 }; 166 167 /* 168 * Some v2 models report the stick buttons in separate bits 169 */ 170 static const struct dmi_system_id alps_dmi_has_separate_stick_buttons[] = { 171 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 172 { 173 /* Extrapolated from other entries */ 174 .matches = { 175 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 176 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D420"), 177 }, 178 }, 179 { 180 /* Reported-by: Hans de Bruin <jmdebruin@xmsnet.nl> */ 181 .matches = { 182 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 183 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D430"), 184 }, 185 }, 186 { 187 /* Reported-by: Hans de Goede <hdegoede@redhat.com> */ 188 .matches = { 189 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 190 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D620"), 191 }, 192 }, 193 { 194 /* Extrapolated from other entries */ 195 .matches = { 196 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 197 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D630"), 198 }, 199 }, 200 #endif 201 { } 202 }; 203 204 static void alps_set_abs_params_st(struct alps_data *priv, 205 struct input_dev *dev1); 206 static void alps_set_abs_params_semi_mt(struct alps_data *priv, 207 struct input_dev *dev1); 208 static void alps_set_abs_params_v7(struct alps_data *priv, 209 struct input_dev *dev1); 210 static void alps_set_abs_params_ss4_v2(struct alps_data *priv, 211 struct input_dev *dev1); 212 213 /* Packet formats are described in Documentation/input/devices/alps.rst */ 214 215 static bool alps_is_valid_first_byte(struct alps_data *priv, 216 unsigned char data) 217 { 218 return (data & priv->mask0) == priv->byte0; 219 } 220 221 static void alps_report_buttons(struct input_dev *dev1, struct input_dev *dev2, 222 int left, int right, int middle) 223 { 224 struct input_dev *dev; 225 226 /* 227 * If shared button has already been reported on the 228 * other device (dev2) then this event should be also 229 * sent through that device. 230 */ 231 dev = (dev2 && test_bit(BTN_LEFT, dev2->key)) ? dev2 : dev1; 232 input_report_key(dev, BTN_LEFT, left); 233 234 dev = (dev2 && test_bit(BTN_RIGHT, dev2->key)) ? dev2 : dev1; 235 input_report_key(dev, BTN_RIGHT, right); 236 237 dev = (dev2 && test_bit(BTN_MIDDLE, dev2->key)) ? dev2 : dev1; 238 input_report_key(dev, BTN_MIDDLE, middle); 239 240 /* 241 * Sync the _other_ device now, we'll do the first 242 * device later once we report the rest of the events. 243 */ 244 if (dev2) 245 input_sync(dev2); 246 } 247 248 static void alps_process_packet_v1_v2(struct psmouse *psmouse) 249 { 250 struct alps_data *priv = psmouse->private; 251 unsigned char *packet = psmouse->packet; 252 struct input_dev *dev = psmouse->dev; 253 struct input_dev *dev2 = priv->dev2; 254 int x, y, z, ges, fin, left, right, middle; 255 int back = 0, forward = 0; 256 257 if (priv->proto_version == ALPS_PROTO_V1) { 258 left = packet[2] & 0x10; 259 right = packet[2] & 0x08; 260 middle = 0; 261 x = packet[1] | ((packet[0] & 0x07) << 7); 262 y = packet[4] | ((packet[3] & 0x07) << 7); 263 z = packet[5]; 264 } else { 265 left = packet[3] & 1; 266 right = packet[3] & 2; 267 middle = packet[3] & 4; 268 x = packet[1] | ((packet[2] & 0x78) << (7 - 3)); 269 y = packet[4] | ((packet[3] & 0x70) << (7 - 4)); 270 z = packet[5]; 271 } 272 273 if (priv->flags & ALPS_FW_BK_1) { 274 back = packet[0] & 0x10; 275 forward = packet[2] & 4; 276 } 277 278 if (priv->flags & ALPS_FW_BK_2) { 279 back = packet[3] & 4; 280 forward = packet[2] & 4; 281 if ((middle = forward && back)) 282 forward = back = 0; 283 } 284 285 ges = packet[2] & 1; 286 fin = packet[2] & 2; 287 288 if ((priv->flags & ALPS_DUALPOINT) && z == 127) { 289 input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x)); 290 input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y)); 291 292 alps_report_buttons(dev2, dev, left, right, middle); 293 294 input_sync(dev2); 295 return; 296 } 297 298 /* Some models have separate stick button bits */ 299 if (priv->flags & ALPS_STICK_BITS) { 300 left |= packet[0] & 1; 301 right |= packet[0] & 2; 302 middle |= packet[0] & 4; 303 } 304 305 alps_report_buttons(dev, dev2, left, right, middle); 306 307 /* Convert hardware tap to a reasonable Z value */ 308 if (ges && !fin) 309 z = 40; 310 311 /* 312 * A "tap and drag" operation is reported by the hardware as a transition 313 * from (!fin && ges) to (fin && ges). This should be translated to the 314 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually. 315 */ 316 if (ges && fin && !priv->prev_fin) { 317 input_report_abs(dev, ABS_X, x); 318 input_report_abs(dev, ABS_Y, y); 319 input_report_abs(dev, ABS_PRESSURE, 0); 320 input_report_key(dev, BTN_TOOL_FINGER, 0); 321 input_sync(dev); 322 } 323 priv->prev_fin = fin; 324 325 if (z > 30) 326 input_report_key(dev, BTN_TOUCH, 1); 327 if (z < 25) 328 input_report_key(dev, BTN_TOUCH, 0); 329 330 if (z > 0) { 331 input_report_abs(dev, ABS_X, x); 332 input_report_abs(dev, ABS_Y, y); 333 } 334 335 input_report_abs(dev, ABS_PRESSURE, z); 336 input_report_key(dev, BTN_TOOL_FINGER, z > 0); 337 338 if (priv->flags & ALPS_WHEEL) 339 input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07)); 340 341 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 342 input_report_key(dev, BTN_FORWARD, forward); 343 input_report_key(dev, BTN_BACK, back); 344 } 345 346 if (priv->flags & ALPS_FOUR_BUTTONS) { 347 input_report_key(dev, BTN_0, packet[2] & 4); 348 input_report_key(dev, BTN_1, packet[0] & 0x10); 349 input_report_key(dev, BTN_2, packet[3] & 4); 350 input_report_key(dev, BTN_3, packet[0] & 0x20); 351 } 352 353 input_sync(dev); 354 } 355 356 static void alps_get_bitmap_points(unsigned int map, 357 struct alps_bitmap_point *low, 358 struct alps_bitmap_point *high, 359 int *fingers) 360 { 361 struct alps_bitmap_point *point; 362 int i, bit, prev_bit = 0; 363 364 point = low; 365 for (i = 0; map != 0; i++, map >>= 1) { 366 bit = map & 1; 367 if (bit) { 368 if (!prev_bit) { 369 point->start_bit = i; 370 point->num_bits = 0; 371 (*fingers)++; 372 } 373 point->num_bits++; 374 } else { 375 if (prev_bit) 376 point = high; 377 } 378 prev_bit = bit; 379 } 380 } 381 382 /* 383 * Process bitmap data from semi-mt protocols. Returns the number of 384 * fingers detected. A return value of 0 means at least one of the 385 * bitmaps was empty. 386 * 387 * The bitmaps don't have enough data to track fingers, so this function 388 * only generates points representing a bounding box of all contacts. 389 * These points are returned in fields->mt when the return value 390 * is greater than 0. 391 */ 392 static int alps_process_bitmap(struct alps_data *priv, 393 struct alps_fields *fields) 394 { 395 int i, fingers_x = 0, fingers_y = 0, fingers, closest; 396 struct alps_bitmap_point x_low = {0,}, x_high = {0,}; 397 struct alps_bitmap_point y_low = {0,}, y_high = {0,}; 398 struct input_mt_pos corner[4]; 399 400 if (!fields->x_map || !fields->y_map) 401 return 0; 402 403 alps_get_bitmap_points(fields->x_map, &x_low, &x_high, &fingers_x); 404 alps_get_bitmap_points(fields->y_map, &y_low, &y_high, &fingers_y); 405 406 /* 407 * Fingers can overlap, so we use the maximum count of fingers 408 * on either axis as the finger count. 409 */ 410 fingers = max(fingers_x, fingers_y); 411 412 /* 413 * If an axis reports only a single contact, we have overlapping or 414 * adjacent fingers. Divide the single contact between the two points. 415 */ 416 if (fingers_x == 1) { 417 i = (x_low.num_bits - 1) / 2; 418 x_low.num_bits = x_low.num_bits - i; 419 x_high.start_bit = x_low.start_bit + i; 420 x_high.num_bits = max(i, 1); 421 } 422 if (fingers_y == 1) { 423 i = (y_low.num_bits - 1) / 2; 424 y_low.num_bits = y_low.num_bits - i; 425 y_high.start_bit = y_low.start_bit + i; 426 y_high.num_bits = max(i, 1); 427 } 428 429 /* top-left corner */ 430 corner[0].x = 431 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) / 432 (2 * (priv->x_bits - 1)); 433 corner[0].y = 434 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) / 435 (2 * (priv->y_bits - 1)); 436 437 /* top-right corner */ 438 corner[1].x = 439 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) / 440 (2 * (priv->x_bits - 1)); 441 corner[1].y = 442 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) / 443 (2 * (priv->y_bits - 1)); 444 445 /* bottom-right corner */ 446 corner[2].x = 447 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) / 448 (2 * (priv->x_bits - 1)); 449 corner[2].y = 450 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) / 451 (2 * (priv->y_bits - 1)); 452 453 /* bottom-left corner */ 454 corner[3].x = 455 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) / 456 (2 * (priv->x_bits - 1)); 457 corner[3].y = 458 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) / 459 (2 * (priv->y_bits - 1)); 460 461 /* x-bitmap order is reversed on v5 touchpads */ 462 if (priv->proto_version == ALPS_PROTO_V5) { 463 for (i = 0; i < 4; i++) 464 corner[i].x = priv->x_max - corner[i].x; 465 } 466 467 /* y-bitmap order is reversed on v3 and v4 touchpads */ 468 if (priv->proto_version == ALPS_PROTO_V3 || 469 priv->proto_version == ALPS_PROTO_V4) { 470 for (i = 0; i < 4; i++) 471 corner[i].y = priv->y_max - corner[i].y; 472 } 473 474 /* 475 * We only select a corner for the second touch once per 2 finger 476 * touch sequence to avoid the chosen corner (and thus the coordinates) 477 * jumping around when the first touch is in the middle. 478 */ 479 if (priv->second_touch == -1) { 480 /* Find corner closest to our st coordinates */ 481 closest = 0x7fffffff; 482 for (i = 0; i < 4; i++) { 483 int dx = fields->st.x - corner[i].x; 484 int dy = fields->st.y - corner[i].y; 485 int distance = dx * dx + dy * dy; 486 487 if (distance < closest) { 488 priv->second_touch = i; 489 closest = distance; 490 } 491 } 492 /* And select the opposite corner to use for the 2nd touch */ 493 priv->second_touch = (priv->second_touch + 2) % 4; 494 } 495 496 fields->mt[0] = fields->st; 497 fields->mt[1] = corner[priv->second_touch]; 498 499 return fingers; 500 } 501 502 static void alps_set_slot(struct input_dev *dev, int slot, int x, int y) 503 { 504 input_mt_slot(dev, slot); 505 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); 506 input_report_abs(dev, ABS_MT_POSITION_X, x); 507 input_report_abs(dev, ABS_MT_POSITION_Y, y); 508 } 509 510 static void alps_report_mt_data(struct psmouse *psmouse, int n) 511 { 512 struct alps_data *priv = psmouse->private; 513 struct input_dev *dev = psmouse->dev; 514 struct alps_fields *f = &priv->f; 515 int i, slot[MAX_TOUCHES]; 516 517 input_mt_assign_slots(dev, slot, f->mt, n, 0); 518 for (i = 0; i < n; i++) 519 alps_set_slot(dev, slot[i], f->mt[i].x, f->mt[i].y); 520 521 input_mt_sync_frame(dev); 522 } 523 524 static void alps_report_semi_mt_data(struct psmouse *psmouse, int fingers) 525 { 526 struct alps_data *priv = psmouse->private; 527 struct input_dev *dev = psmouse->dev; 528 struct alps_fields *f = &priv->f; 529 530 /* Use st data when we don't have mt data */ 531 if (fingers < 2) { 532 f->mt[0].x = f->st.x; 533 f->mt[0].y = f->st.y; 534 fingers = f->pressure > 0 ? 1 : 0; 535 priv->second_touch = -1; 536 } 537 538 if (fingers >= 1) 539 alps_set_slot(dev, 0, f->mt[0].x, f->mt[0].y); 540 if (fingers >= 2) 541 alps_set_slot(dev, 1, f->mt[1].x, f->mt[1].y); 542 input_mt_sync_frame(dev); 543 544 input_mt_report_finger_count(dev, fingers); 545 546 input_report_key(dev, BTN_LEFT, f->left); 547 input_report_key(dev, BTN_RIGHT, f->right); 548 input_report_key(dev, BTN_MIDDLE, f->middle); 549 550 input_report_abs(dev, ABS_PRESSURE, f->pressure); 551 552 input_sync(dev); 553 } 554 555 static void alps_process_trackstick_packet_v3(struct psmouse *psmouse) 556 { 557 struct alps_data *priv = psmouse->private; 558 unsigned char *packet = psmouse->packet; 559 struct input_dev *dev = priv->dev2; 560 int x, y, z, left, right, middle; 561 562 /* It should be a DualPoint when received trackstick packet */ 563 if (!(priv->flags & ALPS_DUALPOINT)) { 564 psmouse_warn(psmouse, 565 "Rejected trackstick packet from non DualPoint device"); 566 return; 567 } 568 569 /* Sanity check packet */ 570 if (!(packet[0] & 0x40)) { 571 psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n"); 572 return; 573 } 574 575 /* 576 * There's a special packet that seems to indicate the end 577 * of a stream of trackstick data. Filter these out. 578 */ 579 if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f) 580 return; 581 582 x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f)); 583 y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f)); 584 z = packet[4] & 0x7f; 585 586 /* 587 * The x and y values tend to be quite large, and when used 588 * alone the trackstick is difficult to use. Scale them down 589 * to compensate. 590 */ 591 x /= 8; 592 y /= 8; 593 594 input_report_rel(dev, REL_X, x); 595 input_report_rel(dev, REL_Y, -y); 596 input_report_abs(dev, ABS_PRESSURE, z); 597 598 /* 599 * Most ALPS models report the trackstick buttons in the touchpad 600 * packets, but a few report them here. No reliable way has been 601 * found to differentiate between the models upfront, so we enable 602 * the quirk in response to seeing a button press in the trackstick 603 * packet. 604 */ 605 left = packet[3] & 0x01; 606 right = packet[3] & 0x02; 607 middle = packet[3] & 0x04; 608 609 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) && 610 (left || right || middle)) 611 priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS; 612 613 if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) { 614 input_report_key(dev, BTN_LEFT, left); 615 input_report_key(dev, BTN_RIGHT, right); 616 input_report_key(dev, BTN_MIDDLE, middle); 617 } 618 619 input_sync(dev); 620 return; 621 } 622 623 static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p) 624 { 625 f->left = !!(p[3] & 0x01); 626 f->right = !!(p[3] & 0x02); 627 f->middle = !!(p[3] & 0x04); 628 629 f->ts_left = !!(p[3] & 0x10); 630 f->ts_right = !!(p[3] & 0x20); 631 f->ts_middle = !!(p[3] & 0x40); 632 } 633 634 static int alps_decode_pinnacle(struct alps_fields *f, unsigned char *p, 635 struct psmouse *psmouse) 636 { 637 f->first_mp = !!(p[4] & 0x40); 638 f->is_mp = !!(p[0] & 0x40); 639 640 if (f->is_mp) { 641 f->fingers = (p[5] & 0x3) + 1; 642 f->x_map = ((p[4] & 0x7e) << 8) | 643 ((p[1] & 0x7f) << 2) | 644 ((p[0] & 0x30) >> 4); 645 f->y_map = ((p[3] & 0x70) << 4) | 646 ((p[2] & 0x7f) << 1) | 647 (p[4] & 0x01); 648 } else { 649 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | 650 ((p[0] & 0x30) >> 4); 651 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); 652 f->pressure = p[5] & 0x7f; 653 654 alps_decode_buttons_v3(f, p); 655 } 656 657 return 0; 658 } 659 660 static int alps_decode_rushmore(struct alps_fields *f, unsigned char *p, 661 struct psmouse *psmouse) 662 { 663 f->first_mp = !!(p[4] & 0x40); 664 f->is_mp = !!(p[5] & 0x40); 665 666 if (f->is_mp) { 667 f->fingers = max((p[5] & 0x3), ((p[5] >> 2) & 0x3)) + 1; 668 f->x_map = ((p[5] & 0x10) << 11) | 669 ((p[4] & 0x7e) << 8) | 670 ((p[1] & 0x7f) << 2) | 671 ((p[0] & 0x30) >> 4); 672 f->y_map = ((p[5] & 0x20) << 6) | 673 ((p[3] & 0x70) << 4) | 674 ((p[2] & 0x7f) << 1) | 675 (p[4] & 0x01); 676 } else { 677 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | 678 ((p[0] & 0x30) >> 4); 679 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); 680 f->pressure = p[5] & 0x7f; 681 682 alps_decode_buttons_v3(f, p); 683 } 684 685 return 0; 686 } 687 688 static int alps_decode_dolphin(struct alps_fields *f, unsigned char *p, 689 struct psmouse *psmouse) 690 { 691 u64 palm_data = 0; 692 struct alps_data *priv = psmouse->private; 693 694 f->first_mp = !!(p[0] & 0x02); 695 f->is_mp = !!(p[0] & 0x20); 696 697 if (!f->is_mp) { 698 f->st.x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7)); 699 f->st.y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3)); 700 f->pressure = (p[0] & 4) ? 0 : p[5] & 0x7f; 701 alps_decode_buttons_v3(f, p); 702 } else { 703 f->fingers = ((p[0] & 0x6) >> 1 | 704 (p[0] & 0x10) >> 2); 705 706 palm_data = (p[1] & 0x7f) | 707 ((p[2] & 0x7f) << 7) | 708 ((p[4] & 0x7f) << 14) | 709 ((p[5] & 0x7f) << 21) | 710 ((p[3] & 0x07) << 28) | 711 (((u64)p[3] & 0x70) << 27) | 712 (((u64)p[0] & 0x01) << 34); 713 714 /* Y-profile is stored in P(0) to p(n-1), n = y_bits; */ 715 f->y_map = palm_data & (BIT(priv->y_bits) - 1); 716 717 /* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */ 718 f->x_map = (palm_data >> priv->y_bits) & 719 (BIT(priv->x_bits) - 1); 720 } 721 722 return 0; 723 } 724 725 static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse) 726 { 727 struct alps_data *priv = psmouse->private; 728 unsigned char *packet = psmouse->packet; 729 struct input_dev *dev2 = priv->dev2; 730 struct alps_fields *f = &priv->f; 731 int fingers = 0; 732 733 memset(f, 0, sizeof(*f)); 734 735 priv->decode_fields(f, packet, psmouse); 736 737 /* 738 * There's no single feature of touchpad position and bitmap packets 739 * that can be used to distinguish between them. We rely on the fact 740 * that a bitmap packet should always follow a position packet with 741 * bit 6 of packet[4] set. 742 */ 743 if (priv->multi_packet) { 744 /* 745 * Sometimes a position packet will indicate a multi-packet 746 * sequence, but then what follows is another position 747 * packet. Check for this, and when it happens process the 748 * position packet as usual. 749 */ 750 if (f->is_mp) { 751 fingers = f->fingers; 752 /* 753 * Bitmap processing uses position packet's coordinate 754 * data, so we need to do decode it first. 755 */ 756 priv->decode_fields(f, priv->multi_data, psmouse); 757 if (alps_process_bitmap(priv, f) == 0) 758 fingers = 0; /* Use st data */ 759 } else { 760 priv->multi_packet = 0; 761 } 762 } 763 764 /* 765 * Bit 6 of byte 0 is not usually set in position packets. The only 766 * times it seems to be set is in situations where the data is 767 * suspect anyway, e.g. a palm resting flat on the touchpad. Given 768 * this combined with the fact that this bit is useful for filtering 769 * out misidentified bitmap packets, we reject anything with this 770 * bit set. 771 */ 772 if (f->is_mp) 773 return; 774 775 if (!priv->multi_packet && f->first_mp) { 776 priv->multi_packet = 1; 777 memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); 778 return; 779 } 780 781 priv->multi_packet = 0; 782 783 /* 784 * Sometimes the hardware sends a single packet with z = 0 785 * in the middle of a stream. Real releases generate packets 786 * with x, y, and z all zero, so these seem to be flukes. 787 * Ignore them. 788 */ 789 if (f->st.x && f->st.y && !f->pressure) 790 return; 791 792 alps_report_semi_mt_data(psmouse, fingers); 793 794 if ((priv->flags & ALPS_DUALPOINT) && 795 !(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) { 796 input_report_key(dev2, BTN_LEFT, f->ts_left); 797 input_report_key(dev2, BTN_RIGHT, f->ts_right); 798 input_report_key(dev2, BTN_MIDDLE, f->ts_middle); 799 input_sync(dev2); 800 } 801 } 802 803 static void alps_process_packet_v3(struct psmouse *psmouse) 804 { 805 unsigned char *packet = psmouse->packet; 806 807 /* 808 * v3 protocol packets come in three types, two representing 809 * touchpad data and one representing trackstick data. 810 * Trackstick packets seem to be distinguished by always 811 * having 0x3f in the last byte. This value has never been 812 * observed in the last byte of either of the other types 813 * of packets. 814 */ 815 if (packet[5] == 0x3f) { 816 alps_process_trackstick_packet_v3(psmouse); 817 return; 818 } 819 820 alps_process_touchpad_packet_v3_v5(psmouse); 821 } 822 823 static void alps_process_packet_v6(struct psmouse *psmouse) 824 { 825 struct alps_data *priv = psmouse->private; 826 unsigned char *packet = psmouse->packet; 827 struct input_dev *dev = psmouse->dev; 828 struct input_dev *dev2 = priv->dev2; 829 int x, y, z; 830 831 /* 832 * We can use Byte5 to distinguish if the packet is from Touchpad 833 * or Trackpoint. 834 * Touchpad: 0 - 0x7E 835 * Trackpoint: 0x7F 836 */ 837 if (packet[5] == 0x7F) { 838 /* It should be a DualPoint when received Trackpoint packet */ 839 if (!(priv->flags & ALPS_DUALPOINT)) { 840 psmouse_warn(psmouse, 841 "Rejected trackstick packet from non DualPoint device"); 842 return; 843 } 844 845 /* Trackpoint packet */ 846 x = packet[1] | ((packet[3] & 0x20) << 2); 847 y = packet[2] | ((packet[3] & 0x40) << 1); 848 z = packet[4]; 849 850 /* To prevent the cursor jump when finger lifted */ 851 if (x == 0x7F && y == 0x7F && z == 0x7F) 852 x = y = z = 0; 853 854 /* Divide 4 since trackpoint's speed is too fast */ 855 input_report_rel(dev2, REL_X, (s8)x / 4); 856 input_report_rel(dev2, REL_Y, -((s8)y / 4)); 857 858 psmouse_report_standard_buttons(dev2, packet[3]); 859 860 input_sync(dev2); 861 return; 862 } 863 864 /* Touchpad packet */ 865 x = packet[1] | ((packet[3] & 0x78) << 4); 866 y = packet[2] | ((packet[4] & 0x78) << 4); 867 z = packet[5]; 868 869 if (z > 30) 870 input_report_key(dev, BTN_TOUCH, 1); 871 if (z < 25) 872 input_report_key(dev, BTN_TOUCH, 0); 873 874 if (z > 0) { 875 input_report_abs(dev, ABS_X, x); 876 input_report_abs(dev, ABS_Y, y); 877 } 878 879 input_report_abs(dev, ABS_PRESSURE, z); 880 input_report_key(dev, BTN_TOOL_FINGER, z > 0); 881 882 /* v6 touchpad does not have middle button */ 883 packet[3] &= ~BIT(2); 884 psmouse_report_standard_buttons(dev2, packet[3]); 885 886 input_sync(dev); 887 } 888 889 static void alps_process_packet_v4(struct psmouse *psmouse) 890 { 891 struct alps_data *priv = psmouse->private; 892 unsigned char *packet = psmouse->packet; 893 struct alps_fields *f = &priv->f; 894 int offset; 895 896 /* 897 * v4 has a 6-byte encoding for bitmap data, but this data is 898 * broken up between 3 normal packets. Use priv->multi_packet to 899 * track our position in the bitmap packet. 900 */ 901 if (packet[6] & 0x40) { 902 /* sync, reset position */ 903 priv->multi_packet = 0; 904 } 905 906 if (WARN_ON_ONCE(priv->multi_packet > 2)) 907 return; 908 909 offset = 2 * priv->multi_packet; 910 priv->multi_data[offset] = packet[6]; 911 priv->multi_data[offset + 1] = packet[7]; 912 913 f->left = !!(packet[4] & 0x01); 914 f->right = !!(packet[4] & 0x02); 915 916 f->st.x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) | 917 ((packet[0] & 0x30) >> 4); 918 f->st.y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f); 919 f->pressure = packet[5] & 0x7f; 920 921 if (++priv->multi_packet > 2) { 922 priv->multi_packet = 0; 923 924 f->x_map = ((priv->multi_data[2] & 0x1f) << 10) | 925 ((priv->multi_data[3] & 0x60) << 3) | 926 ((priv->multi_data[0] & 0x3f) << 2) | 927 ((priv->multi_data[1] & 0x60) >> 5); 928 f->y_map = ((priv->multi_data[5] & 0x01) << 10) | 929 ((priv->multi_data[3] & 0x1f) << 5) | 930 (priv->multi_data[1] & 0x1f); 931 932 f->fingers = alps_process_bitmap(priv, f); 933 } 934 935 alps_report_semi_mt_data(psmouse, f->fingers); 936 } 937 938 static bool alps_is_valid_package_v7(struct psmouse *psmouse) 939 { 940 switch (psmouse->pktcnt) { 941 case 3: 942 return (psmouse->packet[2] & 0x40) == 0x40; 943 case 4: 944 return (psmouse->packet[3] & 0x48) == 0x48; 945 case 6: 946 return (psmouse->packet[5] & 0x40) == 0x00; 947 } 948 return true; 949 } 950 951 static unsigned char alps_get_packet_id_v7(char *byte) 952 { 953 unsigned char packet_id; 954 955 if (byte[4] & 0x40) 956 packet_id = V7_PACKET_ID_TWO; 957 else if (byte[4] & 0x01) 958 packet_id = V7_PACKET_ID_MULTI; 959 else if ((byte[0] & 0x10) && !(byte[4] & 0x43)) 960 packet_id = V7_PACKET_ID_NEW; 961 else if (byte[1] == 0x00 && byte[4] == 0x00) 962 packet_id = V7_PACKET_ID_IDLE; 963 else 964 packet_id = V7_PACKET_ID_UNKNOWN; 965 966 return packet_id; 967 } 968 969 static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt, 970 unsigned char *pkt, 971 unsigned char pkt_id) 972 { 973 mt[0].x = ((pkt[2] & 0x80) << 4); 974 mt[0].x |= ((pkt[2] & 0x3F) << 5); 975 mt[0].x |= ((pkt[3] & 0x30) >> 1); 976 mt[0].x |= (pkt[3] & 0x07); 977 mt[0].y = (pkt[1] << 3) | (pkt[0] & 0x07); 978 979 mt[1].x = ((pkt[3] & 0x80) << 4); 980 mt[1].x |= ((pkt[4] & 0x80) << 3); 981 mt[1].x |= ((pkt[4] & 0x3F) << 4); 982 mt[1].y = ((pkt[5] & 0x80) << 3); 983 mt[1].y |= ((pkt[5] & 0x3F) << 4); 984 985 switch (pkt_id) { 986 case V7_PACKET_ID_TWO: 987 mt[1].x &= ~0x000F; 988 mt[1].y |= 0x000F; 989 /* Detect false-positive touches where x & y report max value */ 990 if (mt[1].y == 0x7ff && mt[1].x == 0xff0) { 991 mt[1].x = 0; 992 /* y gets set to 0 at the end of this function */ 993 } 994 break; 995 996 case V7_PACKET_ID_MULTI: 997 mt[1].x &= ~0x003F; 998 mt[1].y &= ~0x0020; 999 mt[1].y |= ((pkt[4] & 0x02) << 4); 1000 mt[1].y |= 0x001F; 1001 break; 1002 1003 case V7_PACKET_ID_NEW: 1004 mt[1].x &= ~0x003F; 1005 mt[1].x |= (pkt[0] & 0x20); 1006 mt[1].y |= 0x000F; 1007 break; 1008 } 1009 1010 mt[0].y = 0x7FF - mt[0].y; 1011 mt[1].y = 0x7FF - mt[1].y; 1012 } 1013 1014 static int alps_get_mt_count(struct input_mt_pos *mt) 1015 { 1016 int i, fingers = 0; 1017 1018 for (i = 0; i < MAX_TOUCHES; i++) { 1019 if (mt[i].x != 0 || mt[i].y != 0) 1020 fingers++; 1021 } 1022 1023 return fingers; 1024 } 1025 1026 static int alps_decode_packet_v7(struct alps_fields *f, 1027 unsigned char *p, 1028 struct psmouse *psmouse) 1029 { 1030 struct alps_data *priv = psmouse->private; 1031 unsigned char pkt_id; 1032 1033 pkt_id = alps_get_packet_id_v7(p); 1034 if (pkt_id == V7_PACKET_ID_IDLE) 1035 return 0; 1036 if (pkt_id == V7_PACKET_ID_UNKNOWN) 1037 return -1; 1038 /* 1039 * NEW packets are send to indicate a discontinuity in the finger 1040 * coordinate reporting. Specifically a finger may have moved from 1041 * slot 0 to 1 or vice versa. INPUT_MT_TRACK takes care of this for 1042 * us. 1043 * 1044 * NEW packets have 3 problems: 1045 * 1) They do not contain middle / right button info (on non clickpads) 1046 * this can be worked around by preserving the old button state 1047 * 2) They do not contain an accurate fingercount, and they are 1048 * typically send when the number of fingers changes. We cannot use 1049 * the old finger count as that may mismatch with the amount of 1050 * touch coordinates we've available in the NEW packet 1051 * 3) Their x data for the second touch is inaccurate leading to 1052 * a possible jump of the x coordinate by 16 units when the first 1053 * non NEW packet comes in 1054 * Since problems 2 & 3 cannot be worked around, just ignore them. 1055 */ 1056 if (pkt_id == V7_PACKET_ID_NEW) 1057 return 1; 1058 1059 alps_get_finger_coordinate_v7(f->mt, p, pkt_id); 1060 1061 if (pkt_id == V7_PACKET_ID_TWO) 1062 f->fingers = alps_get_mt_count(f->mt); 1063 else /* pkt_id == V7_PACKET_ID_MULTI */ 1064 f->fingers = 3 + (p[5] & 0x03); 1065 1066 f->left = (p[0] & 0x80) >> 7; 1067 if (priv->flags & ALPS_BUTTONPAD) { 1068 if (p[0] & 0x20) 1069 f->fingers++; 1070 if (p[0] & 0x10) 1071 f->fingers++; 1072 } else { 1073 f->right = (p[0] & 0x20) >> 5; 1074 f->middle = (p[0] & 0x10) >> 4; 1075 } 1076 1077 /* Sometimes a single touch is reported in mt[1] rather then mt[0] */ 1078 if (f->fingers == 1 && f->mt[0].x == 0 && f->mt[0].y == 0) { 1079 f->mt[0].x = f->mt[1].x; 1080 f->mt[0].y = f->mt[1].y; 1081 f->mt[1].x = 0; 1082 f->mt[1].y = 0; 1083 } 1084 1085 return 0; 1086 } 1087 1088 static void alps_process_trackstick_packet_v7(struct psmouse *psmouse) 1089 { 1090 struct alps_data *priv = psmouse->private; 1091 unsigned char *packet = psmouse->packet; 1092 struct input_dev *dev2 = priv->dev2; 1093 int x, y, z; 1094 1095 /* It should be a DualPoint when received trackstick packet */ 1096 if (!(priv->flags & ALPS_DUALPOINT)) { 1097 psmouse_warn(psmouse, 1098 "Rejected trackstick packet from non DualPoint device"); 1099 return; 1100 } 1101 1102 x = ((packet[2] & 0xbf)) | ((packet[3] & 0x10) << 2); 1103 y = (packet[3] & 0x07) | (packet[4] & 0xb8) | 1104 ((packet[3] & 0x20) << 1); 1105 z = (packet[5] & 0x3f) | ((packet[3] & 0x80) >> 1); 1106 1107 input_report_rel(dev2, REL_X, (s8)x); 1108 input_report_rel(dev2, REL_Y, -((s8)y)); 1109 input_report_abs(dev2, ABS_PRESSURE, z); 1110 1111 psmouse_report_standard_buttons(dev2, packet[1]); 1112 1113 input_sync(dev2); 1114 } 1115 1116 static void alps_process_touchpad_packet_v7(struct psmouse *psmouse) 1117 { 1118 struct alps_data *priv = psmouse->private; 1119 struct input_dev *dev = psmouse->dev; 1120 struct alps_fields *f = &priv->f; 1121 1122 memset(f, 0, sizeof(*f)); 1123 1124 if (priv->decode_fields(f, psmouse->packet, psmouse)) 1125 return; 1126 1127 alps_report_mt_data(psmouse, alps_get_mt_count(f->mt)); 1128 1129 input_mt_report_finger_count(dev, f->fingers); 1130 1131 input_report_key(dev, BTN_LEFT, f->left); 1132 input_report_key(dev, BTN_RIGHT, f->right); 1133 input_report_key(dev, BTN_MIDDLE, f->middle); 1134 1135 input_sync(dev); 1136 } 1137 1138 static void alps_process_packet_v7(struct psmouse *psmouse) 1139 { 1140 unsigned char *packet = psmouse->packet; 1141 1142 if (packet[0] == 0x48 && (packet[4] & 0x47) == 0x06) 1143 alps_process_trackstick_packet_v7(psmouse); 1144 else 1145 alps_process_touchpad_packet_v7(psmouse); 1146 } 1147 1148 static enum SS4_PACKET_ID alps_get_pkt_id_ss4_v2(unsigned char *byte) 1149 { 1150 enum SS4_PACKET_ID pkt_id = SS4_PACKET_ID_IDLE; 1151 1152 switch (byte[3] & 0x30) { 1153 case 0x00: 1154 if (SS4_IS_IDLE_V2(byte)) { 1155 pkt_id = SS4_PACKET_ID_IDLE; 1156 } else { 1157 pkt_id = SS4_PACKET_ID_ONE; 1158 } 1159 break; 1160 case 0x10: 1161 /* two-finger finger positions */ 1162 pkt_id = SS4_PACKET_ID_TWO; 1163 break; 1164 case 0x20: 1165 /* stick pointer */ 1166 pkt_id = SS4_PACKET_ID_STICK; 1167 break; 1168 case 0x30: 1169 /* third and fourth finger positions */ 1170 pkt_id = SS4_PACKET_ID_MULTI; 1171 break; 1172 } 1173 1174 return pkt_id; 1175 } 1176 1177 static int alps_decode_ss4_v2(struct alps_fields *f, 1178 unsigned char *p, struct psmouse *psmouse) 1179 { 1180 struct alps_data *priv = psmouse->private; 1181 enum SS4_PACKET_ID pkt_id; 1182 unsigned int no_data_x, no_data_y; 1183 1184 pkt_id = alps_get_pkt_id_ss4_v2(p); 1185 1186 /* Current packet is 1Finger coordinate packet */ 1187 switch (pkt_id) { 1188 case SS4_PACKET_ID_ONE: 1189 f->mt[0].x = SS4_1F_X_V2(p); 1190 f->mt[0].y = SS4_1F_Y_V2(p); 1191 f->pressure = ((SS4_1F_Z_V2(p)) * 2) & 0x7f; 1192 /* 1193 * When a button is held the device will give us events 1194 * with x, y, and pressure of 0. This causes annoying jumps 1195 * if a touch is released while the button is held. 1196 * Handle this by claiming zero contacts. 1197 */ 1198 f->fingers = f->pressure > 0 ? 1 : 0; 1199 f->first_mp = 0; 1200 f->is_mp = 0; 1201 break; 1202 1203 case SS4_PACKET_ID_TWO: 1204 if (priv->flags & ALPS_BUTTONPAD) { 1205 if (IS_SS4PLUS_DEV(priv->dev_id)) { 1206 f->mt[0].x = SS4_PLUS_BTL_MF_X_V2(p, 0); 1207 f->mt[1].x = SS4_PLUS_BTL_MF_X_V2(p, 1); 1208 } else { 1209 f->mt[0].x = SS4_BTL_MF_X_V2(p, 0); 1210 f->mt[1].x = SS4_BTL_MF_X_V2(p, 1); 1211 } 1212 f->mt[0].y = SS4_BTL_MF_Y_V2(p, 0); 1213 f->mt[1].y = SS4_BTL_MF_Y_V2(p, 1); 1214 } else { 1215 if (IS_SS4PLUS_DEV(priv->dev_id)) { 1216 f->mt[0].x = SS4_PLUS_STD_MF_X_V2(p, 0); 1217 f->mt[1].x = SS4_PLUS_STD_MF_X_V2(p, 1); 1218 } else { 1219 f->mt[0].x = SS4_STD_MF_X_V2(p, 0); 1220 f->mt[1].x = SS4_STD_MF_X_V2(p, 1); 1221 } 1222 f->mt[0].y = SS4_STD_MF_Y_V2(p, 0); 1223 f->mt[1].y = SS4_STD_MF_Y_V2(p, 1); 1224 } 1225 f->pressure = SS4_MF_Z_V2(p, 0) ? 0x30 : 0; 1226 1227 if (SS4_IS_MF_CONTINUE(p)) { 1228 f->first_mp = 1; 1229 } else { 1230 f->fingers = 2; 1231 f->first_mp = 0; 1232 } 1233 f->is_mp = 0; 1234 1235 break; 1236 1237 case SS4_PACKET_ID_MULTI: 1238 if (priv->flags & ALPS_BUTTONPAD) { 1239 if (IS_SS4PLUS_DEV(priv->dev_id)) { 1240 f->mt[2].x = SS4_PLUS_BTL_MF_X_V2(p, 0); 1241 f->mt[3].x = SS4_PLUS_BTL_MF_X_V2(p, 1); 1242 no_data_x = SS4_PLUS_MFPACKET_NO_AX_BL; 1243 } else { 1244 f->mt[2].x = SS4_BTL_MF_X_V2(p, 0); 1245 f->mt[3].x = SS4_BTL_MF_X_V2(p, 1); 1246 no_data_x = SS4_MFPACKET_NO_AX_BL; 1247 } 1248 no_data_y = SS4_MFPACKET_NO_AY_BL; 1249 1250 f->mt[2].y = SS4_BTL_MF_Y_V2(p, 0); 1251 f->mt[3].y = SS4_BTL_MF_Y_V2(p, 1); 1252 } else { 1253 if (IS_SS4PLUS_DEV(priv->dev_id)) { 1254 f->mt[2].x = SS4_PLUS_STD_MF_X_V2(p, 0); 1255 f->mt[3].x = SS4_PLUS_STD_MF_X_V2(p, 1); 1256 no_data_x = SS4_PLUS_MFPACKET_NO_AX; 1257 } else { 1258 f->mt[2].x = SS4_STD_MF_X_V2(p, 0); 1259 f->mt[3].x = SS4_STD_MF_X_V2(p, 1); 1260 no_data_x = SS4_MFPACKET_NO_AX; 1261 } 1262 no_data_y = SS4_MFPACKET_NO_AY; 1263 1264 f->mt[2].y = SS4_STD_MF_Y_V2(p, 0); 1265 f->mt[3].y = SS4_STD_MF_Y_V2(p, 1); 1266 } 1267 1268 f->first_mp = 0; 1269 f->is_mp = 1; 1270 1271 if (SS4_IS_5F_DETECTED(p)) { 1272 f->fingers = 5; 1273 } else if (f->mt[3].x == no_data_x && 1274 f->mt[3].y == no_data_y) { 1275 f->mt[3].x = 0; 1276 f->mt[3].y = 0; 1277 f->fingers = 3; 1278 } else { 1279 f->fingers = 4; 1280 } 1281 break; 1282 1283 case SS4_PACKET_ID_STICK: 1284 /* 1285 * x, y, and pressure are decoded in 1286 * alps_process_packet_ss4_v2() 1287 */ 1288 f->first_mp = 0; 1289 f->is_mp = 0; 1290 break; 1291 1292 case SS4_PACKET_ID_IDLE: 1293 default: 1294 memset(f, 0, sizeof(struct alps_fields)); 1295 break; 1296 } 1297 1298 /* handle buttons */ 1299 if (pkt_id == SS4_PACKET_ID_STICK) { 1300 f->ts_left = !!(SS4_BTN_V2(p) & 0x01); 1301 f->ts_right = !!(SS4_BTN_V2(p) & 0x02); 1302 f->ts_middle = !!(SS4_BTN_V2(p) & 0x04); 1303 } else { 1304 f->left = !!(SS4_BTN_V2(p) & 0x01); 1305 if (!(priv->flags & ALPS_BUTTONPAD)) { 1306 f->right = !!(SS4_BTN_V2(p) & 0x02); 1307 f->middle = !!(SS4_BTN_V2(p) & 0x04); 1308 } 1309 } 1310 1311 return 0; 1312 } 1313 1314 static void alps_process_packet_ss4_v2(struct psmouse *psmouse) 1315 { 1316 struct alps_data *priv = psmouse->private; 1317 unsigned char *packet = psmouse->packet; 1318 struct input_dev *dev = psmouse->dev; 1319 struct input_dev *dev2 = priv->dev2; 1320 struct alps_fields *f = &priv->f; 1321 1322 memset(f, 0, sizeof(struct alps_fields)); 1323 priv->decode_fields(f, packet, psmouse); 1324 if (priv->multi_packet) { 1325 /* 1326 * Sometimes the first packet will indicate a multi-packet 1327 * sequence, but sometimes the next multi-packet would not 1328 * come. Check for this, and when it happens process the 1329 * position packet as usual. 1330 */ 1331 if (f->is_mp) { 1332 /* Now process the 1st packet */ 1333 priv->decode_fields(f, priv->multi_data, psmouse); 1334 } else { 1335 priv->multi_packet = 0; 1336 } 1337 } 1338 1339 /* 1340 * "f.is_mp" would always be '0' after merging the 1st and 2nd packet. 1341 * When it is set, it means 2nd packet comes without 1st packet come. 1342 */ 1343 if (f->is_mp) 1344 return; 1345 1346 /* Save the first packet */ 1347 if (!priv->multi_packet && f->first_mp) { 1348 priv->multi_packet = 1; 1349 memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); 1350 return; 1351 } 1352 1353 priv->multi_packet = 0; 1354 1355 /* Report trackstick */ 1356 if (alps_get_pkt_id_ss4_v2(packet) == SS4_PACKET_ID_STICK) { 1357 if (!(priv->flags & ALPS_DUALPOINT)) { 1358 psmouse_warn(psmouse, 1359 "Rejected trackstick packet from non DualPoint device"); 1360 return; 1361 } 1362 1363 input_report_rel(dev2, REL_X, SS4_TS_X_V2(packet)); 1364 input_report_rel(dev2, REL_Y, SS4_TS_Y_V2(packet)); 1365 input_report_abs(dev2, ABS_PRESSURE, SS4_TS_Z_V2(packet)); 1366 1367 input_report_key(dev2, BTN_LEFT, f->ts_left); 1368 input_report_key(dev2, BTN_RIGHT, f->ts_right); 1369 input_report_key(dev2, BTN_MIDDLE, f->ts_middle); 1370 1371 input_sync(dev2); 1372 return; 1373 } 1374 1375 /* Report touchpad */ 1376 alps_report_mt_data(psmouse, (f->fingers <= 4) ? f->fingers : 4); 1377 1378 input_mt_report_finger_count(dev, f->fingers); 1379 1380 input_report_key(dev, BTN_LEFT, f->left); 1381 input_report_key(dev, BTN_RIGHT, f->right); 1382 input_report_key(dev, BTN_MIDDLE, f->middle); 1383 1384 input_report_abs(dev, ABS_PRESSURE, f->pressure); 1385 input_sync(dev); 1386 } 1387 1388 static bool alps_is_valid_package_ss4_v2(struct psmouse *psmouse) 1389 { 1390 if (psmouse->pktcnt == 4 && ((psmouse->packet[3] & 0x08) != 0x08)) 1391 return false; 1392 if (psmouse->pktcnt == 6 && ((psmouse->packet[5] & 0x10) != 0x0)) 1393 return false; 1394 return true; 1395 } 1396 1397 static DEFINE_MUTEX(alps_mutex); 1398 1399 static void alps_register_bare_ps2_mouse(struct work_struct *work) 1400 { 1401 struct alps_data *priv = 1402 container_of(work, struct alps_data, dev3_register_work.work); 1403 struct psmouse *psmouse = priv->psmouse; 1404 struct input_dev *dev3; 1405 int error = 0; 1406 1407 mutex_lock(&alps_mutex); 1408 1409 if (priv->dev3) 1410 goto out; 1411 1412 dev3 = input_allocate_device(); 1413 if (!dev3) { 1414 psmouse_err(psmouse, "failed to allocate secondary device\n"); 1415 error = -ENOMEM; 1416 goto out; 1417 } 1418 1419 snprintf(priv->phys3, sizeof(priv->phys3), "%s/%s", 1420 psmouse->ps2dev.serio->phys, 1421 (priv->dev2 ? "input2" : "input1")); 1422 dev3->phys = priv->phys3; 1423 1424 /* 1425 * format of input device name is: "protocol vendor name" 1426 * see function psmouse_switch_protocol() in psmouse-base.c 1427 */ 1428 dev3->name = "PS/2 ALPS Mouse"; 1429 1430 dev3->id.bustype = BUS_I8042; 1431 dev3->id.vendor = 0x0002; 1432 dev3->id.product = PSMOUSE_PS2; 1433 dev3->id.version = 0x0000; 1434 dev3->dev.parent = &psmouse->ps2dev.serio->dev; 1435 1436 input_set_capability(dev3, EV_REL, REL_X); 1437 input_set_capability(dev3, EV_REL, REL_Y); 1438 input_set_capability(dev3, EV_KEY, BTN_LEFT); 1439 input_set_capability(dev3, EV_KEY, BTN_RIGHT); 1440 input_set_capability(dev3, EV_KEY, BTN_MIDDLE); 1441 1442 __set_bit(INPUT_PROP_POINTER, dev3->propbit); 1443 1444 error = input_register_device(dev3); 1445 if (error) { 1446 psmouse_err(psmouse, 1447 "failed to register secondary device: %d\n", 1448 error); 1449 input_free_device(dev3); 1450 goto out; 1451 } 1452 1453 priv->dev3 = dev3; 1454 1455 out: 1456 /* 1457 * Save the error code so that we can detect that we 1458 * already tried to create the device. 1459 */ 1460 if (error) 1461 priv->dev3 = ERR_PTR(error); 1462 1463 mutex_unlock(&alps_mutex); 1464 } 1465 1466 static void alps_report_bare_ps2_packet(struct psmouse *psmouse, 1467 unsigned char packet[], 1468 bool report_buttons) 1469 { 1470 struct alps_data *priv = psmouse->private; 1471 struct input_dev *dev, *dev2 = NULL; 1472 1473 /* Figure out which device to use to report the bare packet */ 1474 if (priv->proto_version == ALPS_PROTO_V2 && 1475 (priv->flags & ALPS_DUALPOINT)) { 1476 /* On V2 devices the DualPoint Stick reports bare packets */ 1477 dev = priv->dev2; 1478 dev2 = psmouse->dev; 1479 } else if (unlikely(IS_ERR_OR_NULL(priv->dev3))) { 1480 /* Register dev3 mouse if we received PS/2 packet first time */ 1481 if (!IS_ERR(priv->dev3)) 1482 psmouse_queue_work(psmouse, &priv->dev3_register_work, 1483 0); 1484 return; 1485 } else { 1486 dev = priv->dev3; 1487 } 1488 1489 if (report_buttons) 1490 alps_report_buttons(dev, dev2, 1491 packet[0] & 1, packet[0] & 2, packet[0] & 4); 1492 1493 psmouse_report_standard_motion(dev, packet); 1494 1495 input_sync(dev); 1496 } 1497 1498 static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse) 1499 { 1500 struct alps_data *priv = psmouse->private; 1501 1502 if (psmouse->pktcnt < 6) 1503 return PSMOUSE_GOOD_DATA; 1504 1505 if (psmouse->pktcnt == 6) { 1506 /* 1507 * Start a timer to flush the packet if it ends up last 1508 * 6-byte packet in the stream. Timer needs to fire 1509 * psmouse core times out itself. 20 ms should be enough 1510 * to decide if we are getting more data or not. 1511 */ 1512 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20)); 1513 return PSMOUSE_GOOD_DATA; 1514 } 1515 1516 del_timer(&priv->timer); 1517 1518 if (psmouse->packet[6] & 0x80) { 1519 1520 /* 1521 * Highest bit is set - that means we either had 1522 * complete ALPS packet and this is start of the 1523 * next packet or we got garbage. 1524 */ 1525 1526 if (((psmouse->packet[3] | 1527 psmouse->packet[4] | 1528 psmouse->packet[5]) & 0x80) || 1529 (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) { 1530 psmouse_dbg(psmouse, 1531 "refusing packet %4ph (suspected interleaved ps/2)\n", 1532 psmouse->packet + 3); 1533 return PSMOUSE_BAD_DATA; 1534 } 1535 1536 priv->process_packet(psmouse); 1537 1538 /* Continue with the next packet */ 1539 psmouse->packet[0] = psmouse->packet[6]; 1540 psmouse->pktcnt = 1; 1541 1542 } else { 1543 1544 /* 1545 * High bit is 0 - that means that we indeed got a PS/2 1546 * packet in the middle of ALPS packet. 1547 * 1548 * There is also possibility that we got 6-byte ALPS 1549 * packet followed by 3-byte packet from trackpoint. We 1550 * can not distinguish between these 2 scenarios but 1551 * because the latter is unlikely to happen in course of 1552 * normal operation (user would need to press all 1553 * buttons on the pad and start moving trackpoint 1554 * without touching the pad surface) we assume former. 1555 * Even if we are wrong the wost thing that would happen 1556 * the cursor would jump but we should not get protocol 1557 * de-synchronization. 1558 */ 1559 1560 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3], 1561 false); 1562 1563 /* 1564 * Continue with the standard ALPS protocol handling, 1565 * but make sure we won't process it as an interleaved 1566 * packet again, which may happen if all buttons are 1567 * pressed. To avoid this let's reset the 4th bit which 1568 * is normally 1. 1569 */ 1570 psmouse->packet[3] = psmouse->packet[6] & 0xf7; 1571 psmouse->pktcnt = 4; 1572 } 1573 1574 return PSMOUSE_GOOD_DATA; 1575 } 1576 1577 static void alps_flush_packet(struct timer_list *t) 1578 { 1579 struct alps_data *priv = from_timer(priv, t, timer); 1580 struct psmouse *psmouse = priv->psmouse; 1581 1582 serio_pause_rx(psmouse->ps2dev.serio); 1583 1584 if (psmouse->pktcnt == psmouse->pktsize) { 1585 1586 /* 1587 * We did not any more data in reasonable amount of time. 1588 * Validate the last 3 bytes and process as a standard 1589 * ALPS packet. 1590 */ 1591 if ((psmouse->packet[3] | 1592 psmouse->packet[4] | 1593 psmouse->packet[5]) & 0x80) { 1594 psmouse_dbg(psmouse, 1595 "refusing packet %3ph (suspected interleaved ps/2)\n", 1596 psmouse->packet + 3); 1597 } else { 1598 priv->process_packet(psmouse); 1599 } 1600 psmouse->pktcnt = 0; 1601 } 1602 1603 serio_continue_rx(psmouse->ps2dev.serio); 1604 } 1605 1606 static psmouse_ret_t alps_process_byte(struct psmouse *psmouse) 1607 { 1608 struct alps_data *priv = psmouse->private; 1609 1610 /* 1611 * Check if we are dealing with a bare PS/2 packet, presumably from 1612 * a device connected to the external PS/2 port. Because bare PS/2 1613 * protocol does not have enough constant bits to self-synchronize 1614 * properly we only do this if the device is fully synchronized. 1615 * Can not distinguish V8's first byte from PS/2 packet's 1616 */ 1617 if (priv->proto_version != ALPS_PROTO_V8 && 1618 !psmouse->out_of_sync_cnt && 1619 (psmouse->packet[0] & 0xc8) == 0x08) { 1620 1621 if (psmouse->pktcnt == 3) { 1622 alps_report_bare_ps2_packet(psmouse, psmouse->packet, 1623 true); 1624 return PSMOUSE_FULL_PACKET; 1625 } 1626 return PSMOUSE_GOOD_DATA; 1627 } 1628 1629 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */ 1630 1631 if ((priv->flags & ALPS_PS2_INTERLEAVED) && 1632 psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) { 1633 return alps_handle_interleaved_ps2(psmouse); 1634 } 1635 1636 if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) { 1637 psmouse_dbg(psmouse, 1638 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n", 1639 psmouse->packet[0], priv->mask0, priv->byte0); 1640 return PSMOUSE_BAD_DATA; 1641 } 1642 1643 /* Bytes 2 - pktsize should have 0 in the highest bit */ 1644 if (priv->proto_version < ALPS_PROTO_V5 && 1645 psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize && 1646 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) { 1647 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1648 psmouse->pktcnt - 1, 1649 psmouse->packet[psmouse->pktcnt - 1]); 1650 1651 if (priv->proto_version == ALPS_PROTO_V3_RUSHMORE && 1652 psmouse->pktcnt == psmouse->pktsize) { 1653 /* 1654 * Some Dell boxes, such as Latitude E6440 or E7440 1655 * with closed lid, quite often smash last byte of 1656 * otherwise valid packet with 0xff. Given that the 1657 * next packet is very likely to be valid let's 1658 * report PSMOUSE_FULL_PACKET but not process data, 1659 * rather than reporting PSMOUSE_BAD_DATA and 1660 * filling the logs. 1661 */ 1662 return PSMOUSE_FULL_PACKET; 1663 } 1664 1665 return PSMOUSE_BAD_DATA; 1666 } 1667 1668 if ((priv->proto_version == ALPS_PROTO_V7 && 1669 !alps_is_valid_package_v7(psmouse)) || 1670 (priv->proto_version == ALPS_PROTO_V8 && 1671 !alps_is_valid_package_ss4_v2(psmouse))) { 1672 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1673 psmouse->pktcnt - 1, 1674 psmouse->packet[psmouse->pktcnt - 1]); 1675 return PSMOUSE_BAD_DATA; 1676 } 1677 1678 if (psmouse->pktcnt == psmouse->pktsize) { 1679 priv->process_packet(psmouse); 1680 return PSMOUSE_FULL_PACKET; 1681 } 1682 1683 return PSMOUSE_GOOD_DATA; 1684 } 1685 1686 static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble) 1687 { 1688 struct ps2dev *ps2dev = &psmouse->ps2dev; 1689 struct alps_data *priv = psmouse->private; 1690 int command; 1691 unsigned char *param; 1692 unsigned char dummy[4]; 1693 1694 BUG_ON(nibble > 0xf); 1695 1696 command = priv->nibble_commands[nibble].command; 1697 param = (command & 0x0f00) ? 1698 dummy : (unsigned char *)&priv->nibble_commands[nibble].data; 1699 1700 if (ps2_command(ps2dev, param, command)) 1701 return -1; 1702 1703 return 0; 1704 } 1705 1706 static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr) 1707 { 1708 struct ps2dev *ps2dev = &psmouse->ps2dev; 1709 struct alps_data *priv = psmouse->private; 1710 int i, nibble; 1711 1712 if (ps2_command(ps2dev, NULL, priv->addr_command)) 1713 return -1; 1714 1715 for (i = 12; i >= 0; i -= 4) { 1716 nibble = (addr >> i) & 0xf; 1717 if (alps_command_mode_send_nibble(psmouse, nibble)) 1718 return -1; 1719 } 1720 1721 return 0; 1722 } 1723 1724 static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1725 { 1726 struct ps2dev *ps2dev = &psmouse->ps2dev; 1727 unsigned char param[4]; 1728 1729 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1730 return -1; 1731 1732 /* 1733 * The address being read is returned in the first two bytes 1734 * of the result. Check that this address matches the expected 1735 * address. 1736 */ 1737 if (addr != ((param[0] << 8) | param[1])) 1738 return -1; 1739 1740 return param[2]; 1741 } 1742 1743 static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1744 { 1745 if (alps_command_mode_set_addr(psmouse, addr)) 1746 return -1; 1747 return __alps_command_mode_read_reg(psmouse, addr); 1748 } 1749 1750 static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value) 1751 { 1752 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf)) 1753 return -1; 1754 if (alps_command_mode_send_nibble(psmouse, value & 0xf)) 1755 return -1; 1756 return 0; 1757 } 1758 1759 static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr, 1760 u8 value) 1761 { 1762 if (alps_command_mode_set_addr(psmouse, addr)) 1763 return -1; 1764 return __alps_command_mode_write_reg(psmouse, value); 1765 } 1766 1767 static int alps_rpt_cmd(struct psmouse *psmouse, int init_command, 1768 int repeated_command, unsigned char *param) 1769 { 1770 struct ps2dev *ps2dev = &psmouse->ps2dev; 1771 1772 param[0] = 0; 1773 if (init_command && ps2_command(ps2dev, param, init_command)) 1774 return -EIO; 1775 1776 if (ps2_command(ps2dev, NULL, repeated_command) || 1777 ps2_command(ps2dev, NULL, repeated_command) || 1778 ps2_command(ps2dev, NULL, repeated_command)) 1779 return -EIO; 1780 1781 param[0] = param[1] = param[2] = 0xff; 1782 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1783 return -EIO; 1784 1785 psmouse_dbg(psmouse, "%2.2X report: %3ph\n", 1786 repeated_command, param); 1787 return 0; 1788 } 1789 1790 static bool alps_check_valid_firmware_id(unsigned char id[]) 1791 { 1792 if (id[0] == 0x73) 1793 return true; 1794 1795 if (id[0] == 0x88 && 1796 (id[1] == 0x07 || 1797 id[1] == 0x08 || 1798 (id[1] & 0xf0) == 0xb0 || 1799 (id[1] & 0xf0) == 0xc0)) { 1800 return true; 1801 } 1802 1803 return false; 1804 } 1805 1806 static int alps_enter_command_mode(struct psmouse *psmouse) 1807 { 1808 unsigned char param[4]; 1809 1810 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) { 1811 psmouse_err(psmouse, "failed to enter command mode\n"); 1812 return -1; 1813 } 1814 1815 if (!alps_check_valid_firmware_id(param)) { 1816 psmouse_dbg(psmouse, 1817 "unknown response while entering command mode\n"); 1818 return -1; 1819 } 1820 return 0; 1821 } 1822 1823 static inline int alps_exit_command_mode(struct psmouse *psmouse) 1824 { 1825 struct ps2dev *ps2dev = &psmouse->ps2dev; 1826 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) 1827 return -1; 1828 return 0; 1829 } 1830 1831 /* 1832 * For DualPoint devices select the device that should respond to 1833 * subsequent commands. It looks like glidepad is behind stickpointer, 1834 * I'd thought it would be other way around... 1835 */ 1836 static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable) 1837 { 1838 struct ps2dev *ps2dev = &psmouse->ps2dev; 1839 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11; 1840 1841 if (ps2_command(ps2dev, NULL, cmd) || 1842 ps2_command(ps2dev, NULL, cmd) || 1843 ps2_command(ps2dev, NULL, cmd) || 1844 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1845 return -1; 1846 1847 /* we may get 3 more bytes, just ignore them */ 1848 ps2_drain(ps2dev, 3, 100); 1849 1850 return 0; 1851 } 1852 1853 static int alps_absolute_mode_v1_v2(struct psmouse *psmouse) 1854 { 1855 struct ps2dev *ps2dev = &psmouse->ps2dev; 1856 1857 /* Try ALPS magic knock - 4 disable before enable */ 1858 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1859 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1860 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1861 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1862 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) 1863 return -1; 1864 1865 /* 1866 * Switch mouse to poll (remote) mode so motion data will not 1867 * get in our way 1868 */ 1869 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL); 1870 } 1871 1872 static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word) 1873 { 1874 int i, nibble; 1875 1876 /* 1877 * b0-b11 are valid bits, send sequence is inverse. 1878 * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1 1879 */ 1880 for (i = 0; i <= 8; i += 4) { 1881 nibble = (word >> i) & 0xf; 1882 if (alps_command_mode_send_nibble(psmouse, nibble)) 1883 return -1; 1884 } 1885 1886 return 0; 1887 } 1888 1889 static int alps_monitor_mode_write_reg(struct psmouse *psmouse, 1890 u16 addr, u16 value) 1891 { 1892 struct ps2dev *ps2dev = &psmouse->ps2dev; 1893 1894 /* 0x0A0 is the command to write the word */ 1895 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) || 1896 alps_monitor_mode_send_word(psmouse, 0x0A0) || 1897 alps_monitor_mode_send_word(psmouse, addr) || 1898 alps_monitor_mode_send_word(psmouse, value) || 1899 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1900 return -1; 1901 1902 return 0; 1903 } 1904 1905 static int alps_monitor_mode(struct psmouse *psmouse, bool enable) 1906 { 1907 struct ps2dev *ps2dev = &psmouse->ps2dev; 1908 1909 if (enable) { 1910 /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */ 1911 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 1912 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) || 1913 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1914 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1915 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1916 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1917 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1918 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO)) 1919 return -1; 1920 } else { 1921 /* EC to exit monitor mode */ 1922 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP)) 1923 return -1; 1924 } 1925 1926 return 0; 1927 } 1928 1929 static int alps_absolute_mode_v6(struct psmouse *psmouse) 1930 { 1931 u16 reg_val = 0x181; 1932 int ret; 1933 1934 /* enter monitor mode, to write the register */ 1935 if (alps_monitor_mode(psmouse, true)) 1936 return -1; 1937 1938 ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val); 1939 1940 if (alps_monitor_mode(psmouse, false)) 1941 ret = -1; 1942 1943 return ret; 1944 } 1945 1946 static int alps_get_status(struct psmouse *psmouse, char *param) 1947 { 1948 /* Get status: 0xF5 0xF5 0xF5 0xE9 */ 1949 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param)) 1950 return -1; 1951 1952 return 0; 1953 } 1954 1955 /* 1956 * Turn touchpad tapping on or off. The sequences are: 1957 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable, 1958 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable. 1959 * My guess that 0xE9 (GetInfo) is here as a sync point. 1960 * For models that also have stickpointer (DualPoints) its tapping 1961 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but 1962 * we don't fiddle with it. 1963 */ 1964 static int alps_tap_mode(struct psmouse *psmouse, int enable) 1965 { 1966 struct ps2dev *ps2dev = &psmouse->ps2dev; 1967 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES; 1968 unsigned char tap_arg = enable ? 0x0A : 0x00; 1969 unsigned char param[4]; 1970 1971 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) || 1972 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1973 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1974 ps2_command(ps2dev, &tap_arg, cmd)) 1975 return -1; 1976 1977 if (alps_get_status(psmouse, param)) 1978 return -1; 1979 1980 return 0; 1981 } 1982 1983 /* 1984 * alps_poll() - poll the touchpad for current motion packet. 1985 * Used in resync. 1986 */ 1987 static int alps_poll(struct psmouse *psmouse) 1988 { 1989 struct alps_data *priv = psmouse->private; 1990 unsigned char buf[sizeof(psmouse->packet)]; 1991 bool poll_failed; 1992 1993 if (priv->flags & ALPS_PASS) 1994 alps_passthrough_mode_v2(psmouse, true); 1995 1996 poll_failed = ps2_command(&psmouse->ps2dev, buf, 1997 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0; 1998 1999 if (priv->flags & ALPS_PASS) 2000 alps_passthrough_mode_v2(psmouse, false); 2001 2002 if (poll_failed || (buf[0] & priv->mask0) != priv->byte0) 2003 return -1; 2004 2005 if ((psmouse->badbyte & 0xc8) == 0x08) { 2006 /* 2007 * Poll the track stick ... 2008 */ 2009 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8))) 2010 return -1; 2011 } 2012 2013 memcpy(psmouse->packet, buf, sizeof(buf)); 2014 return 0; 2015 } 2016 2017 static int alps_hw_init_v1_v2(struct psmouse *psmouse) 2018 { 2019 struct alps_data *priv = psmouse->private; 2020 2021 if ((priv->flags & ALPS_PASS) && 2022 alps_passthrough_mode_v2(psmouse, true)) { 2023 return -1; 2024 } 2025 2026 if (alps_tap_mode(psmouse, true)) { 2027 psmouse_warn(psmouse, "Failed to enable hardware tapping\n"); 2028 return -1; 2029 } 2030 2031 if (alps_absolute_mode_v1_v2(psmouse)) { 2032 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 2033 return -1; 2034 } 2035 2036 if ((priv->flags & ALPS_PASS) && 2037 alps_passthrough_mode_v2(psmouse, false)) { 2038 return -1; 2039 } 2040 2041 /* ALPS needs stream mode, otherwise it won't report any data */ 2042 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) { 2043 psmouse_err(psmouse, "Failed to enable stream mode\n"); 2044 return -1; 2045 } 2046 2047 return 0; 2048 } 2049 2050 /* Must be in passthrough mode when calling this function */ 2051 static int alps_trackstick_enter_extended_mode_v3_v6(struct psmouse *psmouse) 2052 { 2053 unsigned char param[2] = {0xC8, 0x14}; 2054 2055 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2056 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2057 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2058 ps2_command(&psmouse->ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2059 ps2_command(&psmouse->ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 2060 return -1; 2061 2062 return 0; 2063 } 2064 2065 static int alps_hw_init_v6(struct psmouse *psmouse) 2066 { 2067 int ret; 2068 2069 /* Enter passthrough mode to let trackpoint enter 6byte raw mode */ 2070 if (alps_passthrough_mode_v2(psmouse, true)) 2071 return -1; 2072 2073 ret = alps_trackstick_enter_extended_mode_v3_v6(psmouse); 2074 2075 if (alps_passthrough_mode_v2(psmouse, false)) 2076 return -1; 2077 2078 if (ret) 2079 return ret; 2080 2081 if (alps_absolute_mode_v6(psmouse)) { 2082 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 2083 return -1; 2084 } 2085 2086 return 0; 2087 } 2088 2089 /* 2090 * Enable or disable passthrough mode to the trackstick. 2091 */ 2092 static int alps_passthrough_mode_v3(struct psmouse *psmouse, 2093 int reg_base, bool enable) 2094 { 2095 int reg_val, ret = -1; 2096 2097 if (alps_enter_command_mode(psmouse)) 2098 return -1; 2099 2100 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008); 2101 if (reg_val == -1) 2102 goto error; 2103 2104 if (enable) 2105 reg_val |= 0x01; 2106 else 2107 reg_val &= ~0x01; 2108 2109 ret = __alps_command_mode_write_reg(psmouse, reg_val); 2110 2111 error: 2112 if (alps_exit_command_mode(psmouse)) 2113 ret = -1; 2114 return ret; 2115 } 2116 2117 /* Must be in command mode when calling this function */ 2118 static int alps_absolute_mode_v3(struct psmouse *psmouse) 2119 { 2120 int reg_val; 2121 2122 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 2123 if (reg_val == -1) 2124 return -1; 2125 2126 reg_val |= 0x06; 2127 if (__alps_command_mode_write_reg(psmouse, reg_val)) 2128 return -1; 2129 2130 return 0; 2131 } 2132 2133 static int alps_probe_trackstick_v3_v7(struct psmouse *psmouse, int reg_base) 2134 { 2135 int ret = -EIO, reg_val; 2136 2137 if (alps_enter_command_mode(psmouse)) 2138 goto error; 2139 2140 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08); 2141 if (reg_val == -1) 2142 goto error; 2143 2144 /* bit 7: trackstick is present */ 2145 ret = reg_val & 0x80 ? 0 : -ENODEV; 2146 2147 error: 2148 alps_exit_command_mode(psmouse); 2149 return ret; 2150 } 2151 2152 static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base) 2153 { 2154 int ret = 0; 2155 int reg_val; 2156 unsigned char param[4]; 2157 2158 /* 2159 * We need to configure trackstick to report data for touchpad in 2160 * extended format. And also we need to tell touchpad to expect data 2161 * from trackstick in extended format. Without this configuration 2162 * trackstick packets sent from touchpad are in basic format which is 2163 * different from what we expect. 2164 */ 2165 2166 if (alps_passthrough_mode_v3(psmouse, reg_base, true)) 2167 return -EIO; 2168 2169 /* 2170 * E7 report for the trackstick 2171 * 2172 * There have been reports of failures to seem to trace back 2173 * to the above trackstick check failing. When these occur 2174 * this E7 report fails, so when that happens we continue 2175 * with the assumption that there isn't a trackstick after 2176 * all. 2177 */ 2178 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) { 2179 psmouse_warn(psmouse, "Failed to initialize trackstick (E7 report failed)\n"); 2180 ret = -ENODEV; 2181 } else { 2182 psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param); 2183 if (alps_trackstick_enter_extended_mode_v3_v6(psmouse)) { 2184 psmouse_err(psmouse, "Failed to enter into trackstick extended mode\n"); 2185 ret = -EIO; 2186 } 2187 } 2188 2189 if (alps_passthrough_mode_v3(psmouse, reg_base, false)) 2190 return -EIO; 2191 2192 if (ret) 2193 return ret; 2194 2195 if (alps_enter_command_mode(psmouse)) 2196 return -EIO; 2197 2198 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08); 2199 if (reg_val == -1) { 2200 ret = -EIO; 2201 } else { 2202 /* 2203 * Tell touchpad that trackstick is now in extended mode. 2204 * If bit 1 isn't set the packet format is different. 2205 */ 2206 reg_val |= BIT(1); 2207 if (__alps_command_mode_write_reg(psmouse, reg_val)) 2208 ret = -EIO; 2209 } 2210 2211 if (alps_exit_command_mode(psmouse)) 2212 return -EIO; 2213 2214 return ret; 2215 } 2216 2217 static int alps_hw_init_v3(struct psmouse *psmouse) 2218 { 2219 struct alps_data *priv = psmouse->private; 2220 struct ps2dev *ps2dev = &psmouse->ps2dev; 2221 int reg_val; 2222 unsigned char param[4]; 2223 2224 if ((priv->flags & ALPS_DUALPOINT) && 2225 alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO) 2226 goto error; 2227 2228 if (alps_enter_command_mode(psmouse) || 2229 alps_absolute_mode_v3(psmouse)) { 2230 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 2231 goto error; 2232 } 2233 2234 reg_val = alps_command_mode_read_reg(psmouse, 0x0006); 2235 if (reg_val == -1) 2236 goto error; 2237 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 2238 goto error; 2239 2240 reg_val = alps_command_mode_read_reg(psmouse, 0x0007); 2241 if (reg_val == -1) 2242 goto error; 2243 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 2244 goto error; 2245 2246 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1) 2247 goto error; 2248 if (__alps_command_mode_write_reg(psmouse, 0x04)) 2249 goto error; 2250 2251 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1) 2252 goto error; 2253 if (__alps_command_mode_write_reg(psmouse, 0x03)) 2254 goto error; 2255 2256 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1) 2257 goto error; 2258 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03)) 2259 goto error; 2260 2261 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1) 2262 goto error; 2263 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04)) 2264 goto error; 2265 2266 alps_exit_command_mode(psmouse); 2267 2268 /* Set rate and enable data reporting */ 2269 param[0] = 0x64; 2270 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 2271 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 2272 psmouse_err(psmouse, "Failed to enable data reporting\n"); 2273 return -1; 2274 } 2275 2276 return 0; 2277 2278 error: 2279 /* 2280 * Leaving the touchpad in command mode will essentially render 2281 * it unusable until the machine reboots, so exit it here just 2282 * to be safe 2283 */ 2284 alps_exit_command_mode(psmouse); 2285 return -1; 2286 } 2287 2288 static int alps_get_v3_v7_resolution(struct psmouse *psmouse, int reg_pitch) 2289 { 2290 int reg, x_pitch, y_pitch, x_electrode, y_electrode, x_phys, y_phys; 2291 struct alps_data *priv = psmouse->private; 2292 2293 reg = alps_command_mode_read_reg(psmouse, reg_pitch); 2294 if (reg < 0) 2295 return reg; 2296 2297 x_pitch = (s8)(reg << 4) >> 4; /* sign extend lower 4 bits */ 2298 x_pitch = 50 + 2 * x_pitch; /* In 0.1 mm units */ 2299 2300 y_pitch = (s8)reg >> 4; /* sign extend upper 4 bits */ 2301 y_pitch = 36 + 2 * y_pitch; /* In 0.1 mm units */ 2302 2303 reg = alps_command_mode_read_reg(psmouse, reg_pitch + 1); 2304 if (reg < 0) 2305 return reg; 2306 2307 x_electrode = (s8)(reg << 4) >> 4; /* sign extend lower 4 bits */ 2308 x_electrode = 17 + x_electrode; 2309 2310 y_electrode = (s8)reg >> 4; /* sign extend upper 4 bits */ 2311 y_electrode = 13 + y_electrode; 2312 2313 x_phys = x_pitch * (x_electrode - 1); /* In 0.1 mm units */ 2314 y_phys = y_pitch * (y_electrode - 1); /* In 0.1 mm units */ 2315 2316 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ 2317 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ 2318 2319 psmouse_dbg(psmouse, 2320 "pitch %dx%d num-electrodes %dx%d physical size %dx%d mm res %dx%d\n", 2321 x_pitch, y_pitch, x_electrode, y_electrode, 2322 x_phys / 10, y_phys / 10, priv->x_res, priv->y_res); 2323 2324 return 0; 2325 } 2326 2327 static int alps_hw_init_rushmore_v3(struct psmouse *psmouse) 2328 { 2329 struct alps_data *priv = psmouse->private; 2330 struct ps2dev *ps2dev = &psmouse->ps2dev; 2331 int reg_val, ret = -1; 2332 2333 if (priv->flags & ALPS_DUALPOINT) { 2334 reg_val = alps_setup_trackstick_v3(psmouse, 2335 ALPS_REG_BASE_RUSHMORE); 2336 if (reg_val == -EIO) 2337 goto error; 2338 } 2339 2340 if (alps_enter_command_mode(psmouse) || 2341 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 || 2342 alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00)) 2343 goto error; 2344 2345 if (alps_get_v3_v7_resolution(psmouse, 0xc2da)) 2346 goto error; 2347 2348 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6); 2349 if (reg_val == -1) 2350 goto error; 2351 if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd)) 2352 goto error; 2353 2354 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 2355 goto error; 2356 2357 /* enter absolute mode */ 2358 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 2359 if (reg_val == -1) 2360 goto error; 2361 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 2362 goto error; 2363 2364 alps_exit_command_mode(psmouse); 2365 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2366 2367 error: 2368 alps_exit_command_mode(psmouse); 2369 return ret; 2370 } 2371 2372 /* Must be in command mode when calling this function */ 2373 static int alps_absolute_mode_v4(struct psmouse *psmouse) 2374 { 2375 int reg_val; 2376 2377 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 2378 if (reg_val == -1) 2379 return -1; 2380 2381 reg_val |= 0x02; 2382 if (__alps_command_mode_write_reg(psmouse, reg_val)) 2383 return -1; 2384 2385 return 0; 2386 } 2387 2388 static int alps_hw_init_v4(struct psmouse *psmouse) 2389 { 2390 struct ps2dev *ps2dev = &psmouse->ps2dev; 2391 unsigned char param[4]; 2392 2393 if (alps_enter_command_mode(psmouse)) 2394 goto error; 2395 2396 if (alps_absolute_mode_v4(psmouse)) { 2397 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 2398 goto error; 2399 } 2400 2401 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c)) 2402 goto error; 2403 2404 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03)) 2405 goto error; 2406 2407 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03)) 2408 goto error; 2409 2410 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15)) 2411 goto error; 2412 2413 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01)) 2414 goto error; 2415 2416 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03)) 2417 goto error; 2418 2419 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03)) 2420 goto error; 2421 2422 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03)) 2423 goto error; 2424 2425 alps_exit_command_mode(psmouse); 2426 2427 /* 2428 * This sequence changes the output from a 9-byte to an 2429 * 8-byte format. All the same data seems to be present, 2430 * just in a more compact format. 2431 */ 2432 param[0] = 0xc8; 2433 param[1] = 0x64; 2434 param[2] = 0x50; 2435 if (ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2436 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE) || 2437 ps2_command(ps2dev, ¶m[2], PSMOUSE_CMD_SETRATE) || 2438 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) 2439 return -1; 2440 2441 /* Set rate and enable data reporting */ 2442 param[0] = 0x64; 2443 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 2444 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 2445 psmouse_err(psmouse, "Failed to enable data reporting\n"); 2446 return -1; 2447 } 2448 2449 return 0; 2450 2451 error: 2452 /* 2453 * Leaving the touchpad in command mode will essentially render 2454 * it unusable until the machine reboots, so exit it here just 2455 * to be safe 2456 */ 2457 alps_exit_command_mode(psmouse); 2458 return -1; 2459 } 2460 2461 static int alps_get_otp_values_ss4_v2(struct psmouse *psmouse, 2462 unsigned char index, unsigned char otp[]) 2463 { 2464 struct ps2dev *ps2dev = &psmouse->ps2dev; 2465 2466 switch (index) { 2467 case 0: 2468 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2469 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2470 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) 2471 return -1; 2472 2473 break; 2474 2475 case 1: 2476 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2477 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2478 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) 2479 return -1; 2480 2481 break; 2482 } 2483 2484 return 0; 2485 } 2486 2487 static int alps_update_device_area_ss4_v2(unsigned char otp[][4], 2488 struct alps_data *priv) 2489 { 2490 int num_x_electrode; 2491 int num_y_electrode; 2492 int x_pitch, y_pitch, x_phys, y_phys; 2493 2494 if (IS_SS4PLUS_DEV(priv->dev_id)) { 2495 num_x_electrode = 2496 SS4PLUS_NUMSENSOR_XOFFSET + (otp[0][2] & 0x0F); 2497 num_y_electrode = 2498 SS4PLUS_NUMSENSOR_YOFFSET + ((otp[0][2] >> 4) & 0x0F); 2499 2500 priv->x_max = 2501 (num_x_electrode - 1) * SS4PLUS_COUNT_PER_ELECTRODE; 2502 priv->y_max = 2503 (num_y_electrode - 1) * SS4PLUS_COUNT_PER_ELECTRODE; 2504 2505 x_pitch = (otp[0][1] & 0x0F) + SS4PLUS_MIN_PITCH_MM; 2506 y_pitch = ((otp[0][1] >> 4) & 0x0F) + SS4PLUS_MIN_PITCH_MM; 2507 2508 } else { 2509 num_x_electrode = 2510 SS4_NUMSENSOR_XOFFSET + (otp[1][0] & 0x0F); 2511 num_y_electrode = 2512 SS4_NUMSENSOR_YOFFSET + ((otp[1][0] >> 4) & 0x0F); 2513 2514 priv->x_max = 2515 (num_x_electrode - 1) * SS4_COUNT_PER_ELECTRODE; 2516 priv->y_max = 2517 (num_y_electrode - 1) * SS4_COUNT_PER_ELECTRODE; 2518 2519 x_pitch = ((otp[1][2] >> 2) & 0x07) + SS4_MIN_PITCH_MM; 2520 y_pitch = ((otp[1][2] >> 5) & 0x07) + SS4_MIN_PITCH_MM; 2521 } 2522 2523 x_phys = x_pitch * (num_x_electrode - 1); /* In 0.1 mm units */ 2524 y_phys = y_pitch * (num_y_electrode - 1); /* In 0.1 mm units */ 2525 2526 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ 2527 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ 2528 2529 return 0; 2530 } 2531 2532 static int alps_update_btn_info_ss4_v2(unsigned char otp[][4], 2533 struct alps_data *priv) 2534 { 2535 unsigned char is_btnless; 2536 2537 if (IS_SS4PLUS_DEV(priv->dev_id)) 2538 is_btnless = (otp[1][0] >> 1) & 0x01; 2539 else 2540 is_btnless = (otp[1][1] >> 3) & 0x01; 2541 2542 if (is_btnless) 2543 priv->flags |= ALPS_BUTTONPAD; 2544 2545 return 0; 2546 } 2547 2548 static int alps_update_dual_info_ss4_v2(unsigned char otp[][4], 2549 struct alps_data *priv, 2550 struct psmouse *psmouse) 2551 { 2552 bool is_dual = false; 2553 int reg_val = 0; 2554 struct ps2dev *ps2dev = &psmouse->ps2dev; 2555 2556 if (IS_SS4PLUS_DEV(priv->dev_id)) { 2557 is_dual = (otp[0][0] >> 4) & 0x01; 2558 2559 if (!is_dual) { 2560 /* For support TrackStick of Thinkpad L/E series */ 2561 if (alps_exit_command_mode(psmouse) == 0 && 2562 alps_enter_command_mode(psmouse) == 0) { 2563 reg_val = alps_command_mode_read_reg(psmouse, 2564 0xD7); 2565 } 2566 alps_exit_command_mode(psmouse); 2567 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2568 2569 if (reg_val == 0x0C || reg_val == 0x1D) 2570 is_dual = true; 2571 } 2572 } 2573 2574 if (is_dual) 2575 priv->flags |= ALPS_DUALPOINT | 2576 ALPS_DUALPOINT_WITH_PRESSURE; 2577 2578 return 0; 2579 } 2580 2581 static int alps_set_defaults_ss4_v2(struct psmouse *psmouse, 2582 struct alps_data *priv) 2583 { 2584 unsigned char otp[2][4]; 2585 2586 memset(otp, 0, sizeof(otp)); 2587 2588 if (alps_get_otp_values_ss4_v2(psmouse, 1, &otp[1][0]) || 2589 alps_get_otp_values_ss4_v2(psmouse, 0, &otp[0][0])) 2590 return -1; 2591 2592 alps_update_device_area_ss4_v2(otp, priv); 2593 2594 alps_update_btn_info_ss4_v2(otp, priv); 2595 2596 alps_update_dual_info_ss4_v2(otp, priv, psmouse); 2597 2598 return 0; 2599 } 2600 2601 static int alps_dolphin_get_device_area(struct psmouse *psmouse, 2602 struct alps_data *priv) 2603 { 2604 struct ps2dev *ps2dev = &psmouse->ps2dev; 2605 unsigned char param[4] = {0}; 2606 int num_x_electrode, num_y_electrode; 2607 2608 if (alps_enter_command_mode(psmouse)) 2609 return -1; 2610 2611 param[0] = 0x0a; 2612 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 2613 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2614 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2615 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2616 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE)) 2617 return -1; 2618 2619 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 2620 return -1; 2621 2622 /* 2623 * Dolphin's sensor line number is not fixed. It can be calculated 2624 * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET. 2625 * Further more, we can get device's x_max and y_max by multiplying 2626 * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE. 2627 * 2628 * e.g. When we get register's sensor_x = 11 & sensor_y = 8, 2629 * real sensor line number X = 11 + 8 = 19, and 2630 * real sensor line number Y = 8 + 1 = 9. 2631 * So, x_max = (19 - 1) * 64 = 1152, and 2632 * y_max = (9 - 1) * 64 = 512. 2633 */ 2634 num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F); 2635 num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F); 2636 priv->x_bits = num_x_electrode; 2637 priv->y_bits = num_y_electrode; 2638 priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2639 priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2640 2641 if (alps_exit_command_mode(psmouse)) 2642 return -1; 2643 2644 return 0; 2645 } 2646 2647 static int alps_hw_init_dolphin_v1(struct psmouse *psmouse) 2648 { 2649 struct ps2dev *ps2dev = &psmouse->ps2dev; 2650 unsigned char param[2]; 2651 2652 /* This is dolphin "v1" as empirically defined by florin9doi */ 2653 param[0] = 0x64; 2654 param[1] = 0x28; 2655 2656 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2657 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2658 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 2659 return -1; 2660 2661 return 0; 2662 } 2663 2664 static int alps_hw_init_v7(struct psmouse *psmouse) 2665 { 2666 struct ps2dev *ps2dev = &psmouse->ps2dev; 2667 int reg_val, ret = -1; 2668 2669 if (alps_enter_command_mode(psmouse) || 2670 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1) 2671 goto error; 2672 2673 if (alps_get_v3_v7_resolution(psmouse, 0xc397)) 2674 goto error; 2675 2676 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 2677 goto error; 2678 2679 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 2680 if (reg_val == -1) 2681 goto error; 2682 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 2683 goto error; 2684 2685 alps_exit_command_mode(psmouse); 2686 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2687 2688 error: 2689 alps_exit_command_mode(psmouse); 2690 return ret; 2691 } 2692 2693 static int alps_hw_init_ss4_v2(struct psmouse *psmouse) 2694 { 2695 struct ps2dev *ps2dev = &psmouse->ps2dev; 2696 char param[2] = {0x64, 0x28}; 2697 int ret = -1; 2698 2699 /* enter absolute mode */ 2700 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2701 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2702 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2703 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) { 2704 goto error; 2705 } 2706 2707 /* T.B.D. Decread noise packet number, delete in the future */ 2708 if (alps_exit_command_mode(psmouse) || 2709 alps_enter_command_mode(psmouse) || 2710 alps_command_mode_write_reg(psmouse, 0x001D, 0x20)) { 2711 goto error; 2712 } 2713 alps_exit_command_mode(psmouse); 2714 2715 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2716 2717 error: 2718 alps_exit_command_mode(psmouse); 2719 return ret; 2720 } 2721 2722 static int alps_set_protocol(struct psmouse *psmouse, 2723 struct alps_data *priv, 2724 const struct alps_protocol_info *protocol) 2725 { 2726 psmouse->private = priv; 2727 2728 timer_setup(&priv->timer, alps_flush_packet, 0); 2729 2730 priv->proto_version = protocol->version; 2731 priv->byte0 = protocol->byte0; 2732 priv->mask0 = protocol->mask0; 2733 priv->flags = protocol->flags; 2734 2735 priv->x_max = 2000; 2736 priv->y_max = 1400; 2737 priv->x_bits = 15; 2738 priv->y_bits = 11; 2739 2740 switch (priv->proto_version) { 2741 case ALPS_PROTO_V1: 2742 case ALPS_PROTO_V2: 2743 priv->hw_init = alps_hw_init_v1_v2; 2744 priv->process_packet = alps_process_packet_v1_v2; 2745 priv->set_abs_params = alps_set_abs_params_st; 2746 priv->x_max = 1023; 2747 priv->y_max = 767; 2748 if (dmi_check_system(alps_dmi_has_separate_stick_buttons)) 2749 priv->flags |= ALPS_STICK_BITS; 2750 break; 2751 2752 case ALPS_PROTO_V3: 2753 priv->hw_init = alps_hw_init_v3; 2754 priv->process_packet = alps_process_packet_v3; 2755 priv->set_abs_params = alps_set_abs_params_semi_mt; 2756 priv->decode_fields = alps_decode_pinnacle; 2757 priv->nibble_commands = alps_v3_nibble_commands; 2758 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2759 2760 if (alps_probe_trackstick_v3_v7(psmouse, 2761 ALPS_REG_BASE_PINNACLE) < 0) 2762 priv->flags &= ~ALPS_DUALPOINT; 2763 2764 break; 2765 2766 case ALPS_PROTO_V3_RUSHMORE: 2767 priv->hw_init = alps_hw_init_rushmore_v3; 2768 priv->process_packet = alps_process_packet_v3; 2769 priv->set_abs_params = alps_set_abs_params_semi_mt; 2770 priv->decode_fields = alps_decode_rushmore; 2771 priv->nibble_commands = alps_v3_nibble_commands; 2772 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2773 priv->x_bits = 16; 2774 priv->y_bits = 12; 2775 2776 if (alps_probe_trackstick_v3_v7(psmouse, 2777 ALPS_REG_BASE_RUSHMORE) < 0) 2778 priv->flags &= ~ALPS_DUALPOINT; 2779 2780 break; 2781 2782 case ALPS_PROTO_V4: 2783 priv->hw_init = alps_hw_init_v4; 2784 priv->process_packet = alps_process_packet_v4; 2785 priv->set_abs_params = alps_set_abs_params_semi_mt; 2786 priv->nibble_commands = alps_v4_nibble_commands; 2787 priv->addr_command = PSMOUSE_CMD_DISABLE; 2788 break; 2789 2790 case ALPS_PROTO_V5: 2791 priv->hw_init = alps_hw_init_dolphin_v1; 2792 priv->process_packet = alps_process_touchpad_packet_v3_v5; 2793 priv->decode_fields = alps_decode_dolphin; 2794 priv->set_abs_params = alps_set_abs_params_semi_mt; 2795 priv->nibble_commands = alps_v3_nibble_commands; 2796 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2797 priv->x_bits = 23; 2798 priv->y_bits = 12; 2799 2800 if (alps_dolphin_get_device_area(psmouse, priv)) 2801 return -EIO; 2802 2803 break; 2804 2805 case ALPS_PROTO_V6: 2806 priv->hw_init = alps_hw_init_v6; 2807 priv->process_packet = alps_process_packet_v6; 2808 priv->set_abs_params = alps_set_abs_params_st; 2809 priv->nibble_commands = alps_v6_nibble_commands; 2810 priv->x_max = 2047; 2811 priv->y_max = 1535; 2812 break; 2813 2814 case ALPS_PROTO_V7: 2815 priv->hw_init = alps_hw_init_v7; 2816 priv->process_packet = alps_process_packet_v7; 2817 priv->decode_fields = alps_decode_packet_v7; 2818 priv->set_abs_params = alps_set_abs_params_v7; 2819 priv->nibble_commands = alps_v3_nibble_commands; 2820 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2821 priv->x_max = 0xfff; 2822 priv->y_max = 0x7ff; 2823 2824 if (priv->fw_ver[1] != 0xba) 2825 priv->flags |= ALPS_BUTTONPAD; 2826 2827 if (alps_probe_trackstick_v3_v7(psmouse, ALPS_REG_BASE_V7) < 0) 2828 priv->flags &= ~ALPS_DUALPOINT; 2829 2830 break; 2831 2832 case ALPS_PROTO_V8: 2833 priv->hw_init = alps_hw_init_ss4_v2; 2834 priv->process_packet = alps_process_packet_ss4_v2; 2835 priv->decode_fields = alps_decode_ss4_v2; 2836 priv->set_abs_params = alps_set_abs_params_ss4_v2; 2837 priv->nibble_commands = alps_v3_nibble_commands; 2838 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2839 2840 if (alps_set_defaults_ss4_v2(psmouse, priv)) 2841 return -EIO; 2842 2843 break; 2844 } 2845 2846 return 0; 2847 } 2848 2849 static const struct alps_protocol_info *alps_match_table(unsigned char *e7, 2850 unsigned char *ec) 2851 { 2852 const struct alps_model_info *model; 2853 int i; 2854 2855 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) { 2856 model = &alps_model_data[i]; 2857 2858 if (!memcmp(e7, model->signature, sizeof(model->signature))) 2859 return &model->protocol_info; 2860 } 2861 2862 return NULL; 2863 } 2864 2865 static bool alps_is_cs19_trackpoint(struct psmouse *psmouse) 2866 { 2867 u8 param[2] = { 0 }; 2868 2869 if (ps2_command(&psmouse->ps2dev, 2870 param, MAKE_PS2_CMD(0, 2, TP_READ_ID))) 2871 return false; 2872 2873 /* 2874 * param[0] contains the trackpoint device variant_id while 2875 * param[1] contains the firmware_id. So far all alps 2876 * trackpoint-only devices have their variant_ids equal 2877 * TP_VARIANT_ALPS and their firmware_ids are in 0x20~0x2f range. 2878 */ 2879 return param[0] == TP_VARIANT_ALPS && ((param[1] & 0xf0) == 0x20); 2880 } 2881 2882 static int alps_identify(struct psmouse *psmouse, struct alps_data *priv) 2883 { 2884 const struct alps_protocol_info *protocol; 2885 unsigned char e6[4], e7[4], ec[4]; 2886 int error; 2887 2888 /* 2889 * First try "E6 report". 2890 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed. 2891 * The bits 0-2 of the first byte will be 1s if some buttons are 2892 * pressed. 2893 */ 2894 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2895 PSMOUSE_CMD_SETSCALE11, e6)) 2896 return -EIO; 2897 2898 if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100)) 2899 return -EINVAL; 2900 2901 /* 2902 * Now get the "E7" and "EC" reports. These will uniquely identify 2903 * most ALPS touchpads. 2904 */ 2905 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2906 PSMOUSE_CMD_SETSCALE21, e7) || 2907 alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2908 PSMOUSE_CMD_RESET_WRAP, ec) || 2909 alps_exit_command_mode(psmouse)) 2910 return -EIO; 2911 2912 protocol = alps_match_table(e7, ec); 2913 if (!protocol) { 2914 if (e7[0] == 0x73 && e7[1] == 0x02 && e7[2] == 0x64 && 2915 ec[2] == 0x8a) { 2916 protocol = &alps_v4_protocol_data; 2917 } else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 && 2918 ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) { 2919 protocol = &alps_v5_protocol_data; 2920 } else if (ec[0] == 0x88 && 2921 ((ec[1] & 0xf0) == 0xb0 || (ec[1] & 0xf0) == 0xc0)) { 2922 protocol = &alps_v7_protocol_data; 2923 } else if (ec[0] == 0x88 && ec[1] == 0x08) { 2924 protocol = &alps_v3_rushmore_data; 2925 } else if (ec[0] == 0x88 && ec[1] == 0x07 && 2926 ec[2] >= 0x90 && ec[2] <= 0x9d) { 2927 protocol = &alps_v3_protocol_data; 2928 } else if (e7[0] == 0x73 && e7[1] == 0x03 && 2929 (e7[2] == 0x14 || e7[2] == 0x28)) { 2930 protocol = &alps_v8_protocol_data; 2931 } else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0xc8) { 2932 protocol = &alps_v9_protocol_data; 2933 psmouse_warn(psmouse, 2934 "Unsupported ALPS V9 touchpad: E7=%3ph, EC=%3ph\n", 2935 e7, ec); 2936 return -EINVAL; 2937 } else { 2938 psmouse_dbg(psmouse, 2939 "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec); 2940 return -EINVAL; 2941 } 2942 } 2943 2944 if (priv) { 2945 /* Save Device ID and Firmware version */ 2946 memcpy(priv->dev_id, e7, 3); 2947 memcpy(priv->fw_ver, ec, 3); 2948 error = alps_set_protocol(psmouse, priv, protocol); 2949 if (error) 2950 return error; 2951 } 2952 2953 return 0; 2954 } 2955 2956 static int alps_reconnect(struct psmouse *psmouse) 2957 { 2958 struct alps_data *priv = psmouse->private; 2959 2960 psmouse_reset(psmouse); 2961 2962 if (alps_identify(psmouse, priv) < 0) 2963 return -1; 2964 2965 return priv->hw_init(psmouse); 2966 } 2967 2968 static void alps_disconnect(struct psmouse *psmouse) 2969 { 2970 struct alps_data *priv = psmouse->private; 2971 2972 psmouse_reset(psmouse); 2973 timer_shutdown_sync(&priv->timer); 2974 if (priv->dev2) 2975 input_unregister_device(priv->dev2); 2976 if (!IS_ERR_OR_NULL(priv->dev3)) 2977 input_unregister_device(priv->dev3); 2978 kfree(priv); 2979 } 2980 2981 static void alps_set_abs_params_st(struct alps_data *priv, 2982 struct input_dev *dev1) 2983 { 2984 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0); 2985 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0); 2986 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2987 } 2988 2989 static void alps_set_abs_params_mt_common(struct alps_data *priv, 2990 struct input_dev *dev1) 2991 { 2992 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0); 2993 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0); 2994 2995 input_abs_set_res(dev1, ABS_MT_POSITION_X, priv->x_res); 2996 input_abs_set_res(dev1, ABS_MT_POSITION_Y, priv->y_res); 2997 2998 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit); 2999 set_bit(BTN_TOOL_QUADTAP, dev1->keybit); 3000 } 3001 3002 static void alps_set_abs_params_semi_mt(struct alps_data *priv, 3003 struct input_dev *dev1) 3004 { 3005 alps_set_abs_params_mt_common(priv, dev1); 3006 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 3007 3008 input_mt_init_slots(dev1, MAX_TOUCHES, 3009 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 3010 INPUT_MT_SEMI_MT); 3011 } 3012 3013 static void alps_set_abs_params_v7(struct alps_data *priv, 3014 struct input_dev *dev1) 3015 { 3016 alps_set_abs_params_mt_common(priv, dev1); 3017 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 3018 3019 input_mt_init_slots(dev1, MAX_TOUCHES, 3020 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 3021 INPUT_MT_TRACK); 3022 3023 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 3024 } 3025 3026 static void alps_set_abs_params_ss4_v2(struct alps_data *priv, 3027 struct input_dev *dev1) 3028 { 3029 alps_set_abs_params_mt_common(priv, dev1); 3030 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 3031 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 3032 3033 input_mt_init_slots(dev1, MAX_TOUCHES, 3034 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 3035 INPUT_MT_TRACK); 3036 } 3037 3038 int alps_init(struct psmouse *psmouse) 3039 { 3040 struct alps_data *priv = psmouse->private; 3041 struct input_dev *dev1 = psmouse->dev; 3042 int error; 3043 3044 error = priv->hw_init(psmouse); 3045 if (error) 3046 goto init_fail; 3047 3048 /* 3049 * Undo part of setup done for us by psmouse core since touchpad 3050 * is not a relative device. 3051 */ 3052 __clear_bit(EV_REL, dev1->evbit); 3053 __clear_bit(REL_X, dev1->relbit); 3054 __clear_bit(REL_Y, dev1->relbit); 3055 3056 /* 3057 * Now set up our capabilities. 3058 */ 3059 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY); 3060 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH); 3061 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER); 3062 dev1->keybit[BIT_WORD(BTN_LEFT)] |= 3063 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); 3064 3065 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS); 3066 3067 priv->set_abs_params(priv, dev1); 3068 3069 if (priv->flags & ALPS_WHEEL) { 3070 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL); 3071 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL); 3072 } 3073 3074 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 3075 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD); 3076 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK); 3077 } 3078 3079 if (priv->flags & ALPS_FOUR_BUTTONS) { 3080 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0); 3081 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1); 3082 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2); 3083 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3); 3084 } else if (priv->flags & ALPS_BUTTONPAD) { 3085 set_bit(INPUT_PROP_BUTTONPAD, dev1->propbit); 3086 clear_bit(BTN_RIGHT, dev1->keybit); 3087 } else { 3088 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE); 3089 } 3090 3091 if (priv->flags & ALPS_DUALPOINT) { 3092 struct input_dev *dev2; 3093 3094 dev2 = input_allocate_device(); 3095 if (!dev2) { 3096 psmouse_err(psmouse, 3097 "failed to allocate trackstick device\n"); 3098 error = -ENOMEM; 3099 goto init_fail; 3100 } 3101 3102 snprintf(priv->phys2, sizeof(priv->phys2), "%s/input1", 3103 psmouse->ps2dev.serio->phys); 3104 dev2->phys = priv->phys2; 3105 3106 /* 3107 * format of input device name is: "protocol vendor name" 3108 * see function psmouse_switch_protocol() in psmouse-base.c 3109 */ 3110 dev2->name = "AlpsPS/2 ALPS DualPoint Stick"; 3111 3112 dev2->id.bustype = BUS_I8042; 3113 dev2->id.vendor = 0x0002; 3114 dev2->id.product = PSMOUSE_ALPS; 3115 dev2->id.version = priv->proto_version; 3116 dev2->dev.parent = &psmouse->ps2dev.serio->dev; 3117 3118 input_set_capability(dev2, EV_REL, REL_X); 3119 input_set_capability(dev2, EV_REL, REL_Y); 3120 if (priv->flags & ALPS_DUALPOINT_WITH_PRESSURE) { 3121 input_set_capability(dev2, EV_ABS, ABS_PRESSURE); 3122 input_set_abs_params(dev2, ABS_PRESSURE, 0, 127, 0, 0); 3123 } 3124 input_set_capability(dev2, EV_KEY, BTN_LEFT); 3125 input_set_capability(dev2, EV_KEY, BTN_RIGHT); 3126 input_set_capability(dev2, EV_KEY, BTN_MIDDLE); 3127 3128 __set_bit(INPUT_PROP_POINTER, dev2->propbit); 3129 __set_bit(INPUT_PROP_POINTING_STICK, dev2->propbit); 3130 3131 error = input_register_device(dev2); 3132 if (error) { 3133 psmouse_err(psmouse, 3134 "failed to register trackstick device: %d\n", 3135 error); 3136 input_free_device(dev2); 3137 goto init_fail; 3138 } 3139 3140 priv->dev2 = dev2; 3141 } 3142 3143 priv->psmouse = psmouse; 3144 3145 INIT_DELAYED_WORK(&priv->dev3_register_work, 3146 alps_register_bare_ps2_mouse); 3147 3148 psmouse->protocol_handler = alps_process_byte; 3149 psmouse->poll = alps_poll; 3150 psmouse->disconnect = alps_disconnect; 3151 psmouse->reconnect = alps_reconnect; 3152 psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6; 3153 3154 /* We are having trouble resyncing ALPS touchpads so disable it for now */ 3155 psmouse->resync_time = 0; 3156 3157 /* Allow 2 invalid packets without resetting device */ 3158 psmouse->resetafter = psmouse->pktsize * 2; 3159 3160 return 0; 3161 3162 init_fail: 3163 psmouse_reset(psmouse); 3164 /* 3165 * Even though we did not allocate psmouse->private we do free 3166 * it here. 3167 */ 3168 kfree(psmouse->private); 3169 psmouse->private = NULL; 3170 return error; 3171 } 3172 3173 int alps_detect(struct psmouse *psmouse, bool set_properties) 3174 { 3175 struct alps_data *priv; 3176 int error; 3177 3178 error = alps_identify(psmouse, NULL); 3179 if (error) 3180 return error; 3181 3182 /* 3183 * ALPS cs19 is a trackpoint-only device, and uses different 3184 * protocol than DualPoint ones, so we return -EINVAL here and let 3185 * trackpoint.c drive this device. If the trackpoint driver is not 3186 * enabled, the device will fall back to a bare PS/2 mouse. 3187 * If ps2_command() fails here, we depend on the immediately 3188 * followed psmouse_reset() to reset the device to normal state. 3189 */ 3190 if (alps_is_cs19_trackpoint(psmouse)) { 3191 psmouse_dbg(psmouse, 3192 "ALPS CS19 trackpoint-only device detected, ignoring\n"); 3193 return -EINVAL; 3194 } 3195 3196 /* 3197 * Reset the device to make sure it is fully operational: 3198 * on some laptops, like certain Dell Latitudes, we may 3199 * fail to properly detect presence of trackstick if device 3200 * has not been reset. 3201 */ 3202 psmouse_reset(psmouse); 3203 3204 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL); 3205 if (!priv) 3206 return -ENOMEM; 3207 3208 error = alps_identify(psmouse, priv); 3209 if (error) { 3210 kfree(priv); 3211 return error; 3212 } 3213 3214 if (set_properties) { 3215 psmouse->vendor = "ALPS"; 3216 psmouse->name = priv->flags & ALPS_DUALPOINT ? 3217 "DualPoint TouchPad" : "GlidePoint"; 3218 psmouse->model = priv->proto_version; 3219 } else { 3220 /* 3221 * Destroy alps_data structure we allocated earlier since 3222 * this was just a "trial run". Otherwise we'll keep it 3223 * to be used by alps_init() which has to be called if 3224 * we succeed and set_properties is true. 3225 */ 3226 kfree(priv); 3227 psmouse->private = NULL; 3228 } 3229 3230 return 0; 3231 } 3232 3233