1 /* 2 * ALPS touchpad PS/2 mouse driver 3 * 4 * Copyright (c) 2003 Neil Brown <neilb@cse.unsw.edu.au> 5 * Copyright (c) 2003-2005 Peter Osterlund <petero2@telia.com> 6 * Copyright (c) 2004 Dmitry Torokhov <dtor@mail.ru> 7 * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz> 8 * Copyright (c) 2009 Sebastian Kapfer <sebastian_kapfer@gmx.net> 9 * 10 * ALPS detection, tap switching and status querying info is taken from 11 * tpconfig utility (by C. Scott Ananian and Bruce Kall). 12 * 13 * This program is free software; you can redistribute it and/or modify it 14 * under the terms of the GNU General Public License version 2 as published by 15 * the Free Software Foundation. 16 */ 17 18 #include <linux/slab.h> 19 #include <linux/input.h> 20 #include <linux/input/mt.h> 21 #include <linux/serio.h> 22 #include <linux/libps2.h> 23 #include <linux/dmi.h> 24 25 #include "psmouse.h" 26 #include "alps.h" 27 28 /* 29 * Definitions for ALPS version 3 and 4 command mode protocol 30 */ 31 #define ALPS_CMD_NIBBLE_10 0x01f2 32 33 #define ALPS_REG_BASE_RUSHMORE 0xc2c0 34 #define ALPS_REG_BASE_V7 0xc2c0 35 #define ALPS_REG_BASE_PINNACLE 0x0000 36 37 static const struct alps_nibble_commands alps_v3_nibble_commands[] = { 38 { PSMOUSE_CMD_SETPOLL, 0x00 }, /* 0 */ 39 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */ 40 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */ 41 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */ 42 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */ 43 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */ 44 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */ 45 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */ 46 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */ 47 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */ 48 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */ 49 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */ 50 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */ 51 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */ 52 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */ 53 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 54 }; 55 56 static const struct alps_nibble_commands alps_v4_nibble_commands[] = { 57 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */ 58 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */ 59 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */ 60 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */ 61 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */ 62 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */ 63 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */ 64 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */ 65 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */ 66 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */ 67 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */ 68 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */ 69 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */ 70 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */ 71 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */ 72 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 73 }; 74 75 static const struct alps_nibble_commands alps_v6_nibble_commands[] = { 76 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */ 77 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 1 */ 78 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 2 */ 79 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 3 */ 80 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 4 */ 81 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 5 */ 82 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 6 */ 83 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 7 */ 84 { PSMOUSE_CMD_GETID, 0x00 }, /* 8 */ 85 { PSMOUSE_CMD_GETINFO, 0x00 }, /* 9 */ 86 { PSMOUSE_CMD_SETRES, 0x00 }, /* a */ 87 { PSMOUSE_CMD_SETRES, 0x01 }, /* b */ 88 { PSMOUSE_CMD_SETRES, 0x02 }, /* c */ 89 { PSMOUSE_CMD_SETRES, 0x03 }, /* d */ 90 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* e */ 91 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 92 }; 93 94 95 #define ALPS_DUALPOINT 0x02 /* touchpad has trackstick */ 96 #define ALPS_PASS 0x04 /* device has a pass-through port */ 97 98 #define ALPS_WHEEL 0x08 /* hardware wheel present */ 99 #define ALPS_FW_BK_1 0x10 /* front & back buttons present */ 100 #define ALPS_FW_BK_2 0x20 /* front & back buttons present */ 101 #define ALPS_FOUR_BUTTONS 0x40 /* 4 direction button present */ 102 #define ALPS_PS2_INTERLEAVED 0x80 /* 3-byte PS/2 packet interleaved with 103 6-byte ALPS packet */ 104 #define ALPS_STICK_BITS 0x100 /* separate stick button bits */ 105 #define ALPS_BUTTONPAD 0x200 /* device is a clickpad */ 106 #define ALPS_DUALPOINT_WITH_PRESSURE 0x400 /* device can report trackpoint pressure */ 107 108 static const struct alps_model_info alps_model_data[] = { 109 { { 0x32, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Toshiba Salellite Pro M10 */ 110 { { 0x33, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V1, 0x88, 0xf8, 0 } }, /* UMAX-530T */ 111 { { 0x53, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 112 { { 0x53, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 113 { { 0x60, 0x03, 0xc8 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, /* HP ze1115 */ 114 { { 0x63, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 115 { { 0x63, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 116 { { 0x63, 0x02, 0x28 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Fujitsu Siemens S6010 */ 117 { { 0x63, 0x02, 0x3c }, 0x00, { ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL } }, /* Toshiba Satellite S2400-103 */ 118 { { 0x63, 0x02, 0x50 }, 0x00, { ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 } }, /* NEC Versa L320 */ 119 { { 0x63, 0x02, 0x64 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 120 { { 0x63, 0x03, 0xc8 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D800 */ 121 { { 0x73, 0x00, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT } }, /* ThinkPad R61 8918-5QG */ 122 { { 0x73, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 123 { { 0x73, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Ahtec Laptop */ 124 125 /* 126 * XXX This entry is suspicious. First byte has zero lower nibble, 127 * which is what a normal mouse would report. Also, the value 0x0e 128 * isn't valid per PS/2 spec. 129 */ 130 { { 0x20, 0x02, 0x0e }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, 131 132 { { 0x22, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, 133 { { 0x22, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D600 */ 134 /* Dell Latitude E5500, E6400, E6500, Precision M4400 */ 135 { { 0x62, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xcf, 0xcf, 136 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, 137 { { 0x73, 0x00, 0x14 }, 0x00, { ALPS_PROTO_V6, 0xff, 0xff, ALPS_DUALPOINT } }, /* Dell XT2 */ 138 { { 0x73, 0x02, 0x50 }, 0x00, { ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS } }, /* Dell Vostro 1400 */ 139 { { 0x52, 0x01, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff, 140 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, /* Toshiba Tecra A11-11L */ 141 }; 142 143 static const struct alps_protocol_info alps_v3_protocol_data = { 144 ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT 145 }; 146 147 static const struct alps_protocol_info alps_v3_rushmore_data = { 148 ALPS_PROTO_V3_RUSHMORE, 0x8f, 0x8f, ALPS_DUALPOINT 149 }; 150 151 static const struct alps_protocol_info alps_v4_protocol_data = { 152 ALPS_PROTO_V4, 0x8f, 0x8f, 0 153 }; 154 155 static const struct alps_protocol_info alps_v5_protocol_data = { 156 ALPS_PROTO_V5, 0xc8, 0xd8, 0 157 }; 158 159 static const struct alps_protocol_info alps_v7_protocol_data = { 160 ALPS_PROTO_V7, 0x48, 0x48, ALPS_DUALPOINT 161 }; 162 163 static const struct alps_protocol_info alps_v8_protocol_data = { 164 ALPS_PROTO_V8, 0x18, 0x18, 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/alps.txt */ 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] & 0x7c) >> 2; 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); 596 597 /* 598 * Most ALPS models report the trackstick buttons in the touchpad 599 * packets, but a few report them here. No reliable way has been 600 * found to differentiate between the models upfront, so we enable 601 * the quirk in response to seeing a button press in the trackstick 602 * packet. 603 */ 604 left = packet[3] & 0x01; 605 right = packet[3] & 0x02; 606 middle = packet[3] & 0x04; 607 608 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) && 609 (left || right || middle)) 610 priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS; 611 612 if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) { 613 input_report_key(dev, BTN_LEFT, left); 614 input_report_key(dev, BTN_RIGHT, right); 615 input_report_key(dev, BTN_MIDDLE, middle); 616 } 617 618 input_sync(dev); 619 return; 620 } 621 622 static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p) 623 { 624 f->left = !!(p[3] & 0x01); 625 f->right = !!(p[3] & 0x02); 626 f->middle = !!(p[3] & 0x04); 627 628 f->ts_left = !!(p[3] & 0x10); 629 f->ts_right = !!(p[3] & 0x20); 630 f->ts_middle = !!(p[3] & 0x40); 631 } 632 633 static int alps_decode_pinnacle(struct alps_fields *f, unsigned char *p, 634 struct psmouse *psmouse) 635 { 636 f->first_mp = !!(p[4] & 0x40); 637 f->is_mp = !!(p[0] & 0x40); 638 639 if (f->is_mp) { 640 f->fingers = (p[5] & 0x3) + 1; 641 f->x_map = ((p[4] & 0x7e) << 8) | 642 ((p[1] & 0x7f) << 2) | 643 ((p[0] & 0x30) >> 4); 644 f->y_map = ((p[3] & 0x70) << 4) | 645 ((p[2] & 0x7f) << 1) | 646 (p[4] & 0x01); 647 } else { 648 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | 649 ((p[0] & 0x30) >> 4); 650 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); 651 f->pressure = p[5] & 0x7f; 652 653 alps_decode_buttons_v3(f, p); 654 } 655 656 return 0; 657 } 658 659 static int alps_decode_rushmore(struct alps_fields *f, unsigned char *p, 660 struct psmouse *psmouse) 661 { 662 f->first_mp = !!(p[4] & 0x40); 663 f->is_mp = !!(p[5] & 0x40); 664 665 if (f->is_mp) { 666 f->fingers = max((p[5] & 0x3), ((p[5] >> 2) & 0x3)) + 1; 667 f->x_map = ((p[5] & 0x10) << 11) | 668 ((p[4] & 0x7e) << 8) | 669 ((p[1] & 0x7f) << 2) | 670 ((p[0] & 0x30) >> 4); 671 f->y_map = ((p[5] & 0x20) << 6) | 672 ((p[3] & 0x70) << 4) | 673 ((p[2] & 0x7f) << 1) | 674 (p[4] & 0x01); 675 } else { 676 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | 677 ((p[0] & 0x30) >> 4); 678 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); 679 f->pressure = p[5] & 0x7f; 680 681 alps_decode_buttons_v3(f, p); 682 } 683 684 return 0; 685 } 686 687 static int alps_decode_dolphin(struct alps_fields *f, unsigned char *p, 688 struct psmouse *psmouse) 689 { 690 u64 palm_data = 0; 691 struct alps_data *priv = psmouse->private; 692 693 f->first_mp = !!(p[0] & 0x02); 694 f->is_mp = !!(p[0] & 0x20); 695 696 if (!f->is_mp) { 697 f->st.x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7)); 698 f->st.y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3)); 699 f->pressure = (p[0] & 4) ? 0 : p[5] & 0x7f; 700 alps_decode_buttons_v3(f, p); 701 } else { 702 f->fingers = ((p[0] & 0x6) >> 1 | 703 (p[0] & 0x10) >> 2); 704 705 palm_data = (p[1] & 0x7f) | 706 ((p[2] & 0x7f) << 7) | 707 ((p[4] & 0x7f) << 14) | 708 ((p[5] & 0x7f) << 21) | 709 ((p[3] & 0x07) << 28) | 710 (((u64)p[3] & 0x70) << 27) | 711 (((u64)p[0] & 0x01) << 34); 712 713 /* Y-profile is stored in P(0) to p(n-1), n = y_bits; */ 714 f->y_map = palm_data & (BIT(priv->y_bits) - 1); 715 716 /* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */ 717 f->x_map = (palm_data >> priv->y_bits) & 718 (BIT(priv->x_bits) - 1); 719 } 720 721 return 0; 722 } 723 724 static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse) 725 { 726 struct alps_data *priv = psmouse->private; 727 unsigned char *packet = psmouse->packet; 728 struct input_dev *dev2 = priv->dev2; 729 struct alps_fields *f = &priv->f; 730 int fingers = 0; 731 732 memset(f, 0, sizeof(*f)); 733 734 priv->decode_fields(f, packet, psmouse); 735 736 /* 737 * There's no single feature of touchpad position and bitmap packets 738 * that can be used to distinguish between them. We rely on the fact 739 * that a bitmap packet should always follow a position packet with 740 * bit 6 of packet[4] set. 741 */ 742 if (priv->multi_packet) { 743 /* 744 * Sometimes a position packet will indicate a multi-packet 745 * sequence, but then what follows is another position 746 * packet. Check for this, and when it happens process the 747 * position packet as usual. 748 */ 749 if (f->is_mp) { 750 fingers = f->fingers; 751 /* 752 * Bitmap processing uses position packet's coordinate 753 * data, so we need to do decode it first. 754 */ 755 priv->decode_fields(f, priv->multi_data, psmouse); 756 if (alps_process_bitmap(priv, f) == 0) 757 fingers = 0; /* Use st data */ 758 } else { 759 priv->multi_packet = 0; 760 } 761 } 762 763 /* 764 * Bit 6 of byte 0 is not usually set in position packets. The only 765 * times it seems to be set is in situations where the data is 766 * suspect anyway, e.g. a palm resting flat on the touchpad. Given 767 * this combined with the fact that this bit is useful for filtering 768 * out misidentified bitmap packets, we reject anything with this 769 * bit set. 770 */ 771 if (f->is_mp) 772 return; 773 774 if (!priv->multi_packet && f->first_mp) { 775 priv->multi_packet = 1; 776 memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); 777 return; 778 } 779 780 priv->multi_packet = 0; 781 782 /* 783 * Sometimes the hardware sends a single packet with z = 0 784 * in the middle of a stream. Real releases generate packets 785 * with x, y, and z all zero, so these seem to be flukes. 786 * Ignore them. 787 */ 788 if (f->st.x && f->st.y && !f->pressure) 789 return; 790 791 alps_report_semi_mt_data(psmouse, fingers); 792 793 if ((priv->flags & ALPS_DUALPOINT) && 794 !(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) { 795 input_report_key(dev2, BTN_LEFT, f->ts_left); 796 input_report_key(dev2, BTN_RIGHT, f->ts_right); 797 input_report_key(dev2, BTN_MIDDLE, f->ts_middle); 798 input_sync(dev2); 799 } 800 } 801 802 static void alps_process_packet_v3(struct psmouse *psmouse) 803 { 804 unsigned char *packet = psmouse->packet; 805 806 /* 807 * v3 protocol packets come in three types, two representing 808 * touchpad data and one representing trackstick data. 809 * Trackstick packets seem to be distinguished by always 810 * having 0x3f in the last byte. This value has never been 811 * observed in the last byte of either of the other types 812 * of packets. 813 */ 814 if (packet[5] == 0x3f) { 815 alps_process_trackstick_packet_v3(psmouse); 816 return; 817 } 818 819 alps_process_touchpad_packet_v3_v5(psmouse); 820 } 821 822 static void alps_process_packet_v6(struct psmouse *psmouse) 823 { 824 struct alps_data *priv = psmouse->private; 825 unsigned char *packet = psmouse->packet; 826 struct input_dev *dev = psmouse->dev; 827 struct input_dev *dev2 = priv->dev2; 828 int x, y, z, left, right, middle; 829 830 /* 831 * We can use Byte5 to distinguish if the packet is from Touchpad 832 * or Trackpoint. 833 * Touchpad: 0 - 0x7E 834 * Trackpoint: 0x7F 835 */ 836 if (packet[5] == 0x7F) { 837 /* It should be a DualPoint when received Trackpoint packet */ 838 if (!(priv->flags & ALPS_DUALPOINT)) { 839 psmouse_warn(psmouse, 840 "Rejected trackstick packet from non DualPoint device"); 841 return; 842 } 843 844 /* Trackpoint packet */ 845 x = packet[1] | ((packet[3] & 0x20) << 2); 846 y = packet[2] | ((packet[3] & 0x40) << 1); 847 z = packet[4]; 848 left = packet[3] & 0x01; 849 right = packet[3] & 0x02; 850 middle = packet[3] & 0x04; 851 852 /* To prevent the cursor jump when finger lifted */ 853 if (x == 0x7F && y == 0x7F && z == 0x7F) 854 x = y = z = 0; 855 856 /* Divide 4 since trackpoint's speed is too fast */ 857 input_report_rel(dev2, REL_X, (char)x / 4); 858 input_report_rel(dev2, REL_Y, -((char)y / 4)); 859 860 input_report_key(dev2, BTN_LEFT, left); 861 input_report_key(dev2, BTN_RIGHT, right); 862 input_report_key(dev2, BTN_MIDDLE, middle); 863 864 input_sync(dev2); 865 return; 866 } 867 868 /* Touchpad packet */ 869 x = packet[1] | ((packet[3] & 0x78) << 4); 870 y = packet[2] | ((packet[4] & 0x78) << 4); 871 z = packet[5]; 872 left = packet[3] & 0x01; 873 right = packet[3] & 0x02; 874 875 if (z > 30) 876 input_report_key(dev, BTN_TOUCH, 1); 877 if (z < 25) 878 input_report_key(dev, BTN_TOUCH, 0); 879 880 if (z > 0) { 881 input_report_abs(dev, ABS_X, x); 882 input_report_abs(dev, ABS_Y, y); 883 } 884 885 input_report_abs(dev, ABS_PRESSURE, z); 886 input_report_key(dev, BTN_TOOL_FINGER, z > 0); 887 888 /* v6 touchpad does not have middle button */ 889 input_report_key(dev, BTN_LEFT, left); 890 input_report_key(dev, BTN_RIGHT, right); 891 892 input_sync(dev); 893 } 894 895 static void alps_process_packet_v4(struct psmouse *psmouse) 896 { 897 struct alps_data *priv = psmouse->private; 898 unsigned char *packet = psmouse->packet; 899 struct alps_fields *f = &priv->f; 900 int offset; 901 902 /* 903 * v4 has a 6-byte encoding for bitmap data, but this data is 904 * broken up between 3 normal packets. Use priv->multi_packet to 905 * track our position in the bitmap packet. 906 */ 907 if (packet[6] & 0x40) { 908 /* sync, reset position */ 909 priv->multi_packet = 0; 910 } 911 912 if (WARN_ON_ONCE(priv->multi_packet > 2)) 913 return; 914 915 offset = 2 * priv->multi_packet; 916 priv->multi_data[offset] = packet[6]; 917 priv->multi_data[offset + 1] = packet[7]; 918 919 f->left = !!(packet[4] & 0x01); 920 f->right = !!(packet[4] & 0x02); 921 922 f->st.x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) | 923 ((packet[0] & 0x30) >> 4); 924 f->st.y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f); 925 f->pressure = packet[5] & 0x7f; 926 927 if (++priv->multi_packet > 2) { 928 priv->multi_packet = 0; 929 930 f->x_map = ((priv->multi_data[2] & 0x1f) << 10) | 931 ((priv->multi_data[3] & 0x60) << 3) | 932 ((priv->multi_data[0] & 0x3f) << 2) | 933 ((priv->multi_data[1] & 0x60) >> 5); 934 f->y_map = ((priv->multi_data[5] & 0x01) << 10) | 935 ((priv->multi_data[3] & 0x1f) << 5) | 936 (priv->multi_data[1] & 0x1f); 937 938 f->fingers = alps_process_bitmap(priv, f); 939 } 940 941 alps_report_semi_mt_data(psmouse, f->fingers); 942 } 943 944 static bool alps_is_valid_package_v7(struct psmouse *psmouse) 945 { 946 switch (psmouse->pktcnt) { 947 case 3: 948 return (psmouse->packet[2] & 0x40) == 0x40; 949 case 4: 950 return (psmouse->packet[3] & 0x48) == 0x48; 951 case 6: 952 return (psmouse->packet[5] & 0x40) == 0x00; 953 } 954 return true; 955 } 956 957 static unsigned char alps_get_packet_id_v7(char *byte) 958 { 959 unsigned char packet_id; 960 961 if (byte[4] & 0x40) 962 packet_id = V7_PACKET_ID_TWO; 963 else if (byte[4] & 0x01) 964 packet_id = V7_PACKET_ID_MULTI; 965 else if ((byte[0] & 0x10) && !(byte[4] & 0x43)) 966 packet_id = V7_PACKET_ID_NEW; 967 else if (byte[1] == 0x00 && byte[4] == 0x00) 968 packet_id = V7_PACKET_ID_IDLE; 969 else 970 packet_id = V7_PACKET_ID_UNKNOWN; 971 972 return packet_id; 973 } 974 975 static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt, 976 unsigned char *pkt, 977 unsigned char pkt_id) 978 { 979 mt[0].x = ((pkt[2] & 0x80) << 4); 980 mt[0].x |= ((pkt[2] & 0x3F) << 5); 981 mt[0].x |= ((pkt[3] & 0x30) >> 1); 982 mt[0].x |= (pkt[3] & 0x07); 983 mt[0].y = (pkt[1] << 3) | (pkt[0] & 0x07); 984 985 mt[1].x = ((pkt[3] & 0x80) << 4); 986 mt[1].x |= ((pkt[4] & 0x80) << 3); 987 mt[1].x |= ((pkt[4] & 0x3F) << 4); 988 mt[1].y = ((pkt[5] & 0x80) << 3); 989 mt[1].y |= ((pkt[5] & 0x3F) << 4); 990 991 switch (pkt_id) { 992 case V7_PACKET_ID_TWO: 993 mt[1].x &= ~0x000F; 994 mt[1].y |= 0x000F; 995 /* Detect false-postive touches where x & y report max value */ 996 if (mt[1].y == 0x7ff && mt[1].x == 0xff0) { 997 mt[1].x = 0; 998 /* y gets set to 0 at the end of this function */ 999 } 1000 break; 1001 1002 case V7_PACKET_ID_MULTI: 1003 mt[1].x &= ~0x003F; 1004 mt[1].y &= ~0x0020; 1005 mt[1].y |= ((pkt[4] & 0x02) << 4); 1006 mt[1].y |= 0x001F; 1007 break; 1008 1009 case V7_PACKET_ID_NEW: 1010 mt[1].x &= ~0x003F; 1011 mt[1].x |= (pkt[0] & 0x20); 1012 mt[1].y |= 0x000F; 1013 break; 1014 } 1015 1016 mt[0].y = 0x7FF - mt[0].y; 1017 mt[1].y = 0x7FF - mt[1].y; 1018 } 1019 1020 static int alps_get_mt_count(struct input_mt_pos *mt) 1021 { 1022 int i, fingers = 0; 1023 1024 for (i = 0; i < MAX_TOUCHES; i++) { 1025 if (mt[i].x != 0 || mt[i].y != 0) 1026 fingers++; 1027 } 1028 1029 return fingers; 1030 } 1031 1032 static int alps_decode_packet_v7(struct alps_fields *f, 1033 unsigned char *p, 1034 struct psmouse *psmouse) 1035 { 1036 struct alps_data *priv = psmouse->private; 1037 unsigned char pkt_id; 1038 1039 pkt_id = alps_get_packet_id_v7(p); 1040 if (pkt_id == V7_PACKET_ID_IDLE) 1041 return 0; 1042 if (pkt_id == V7_PACKET_ID_UNKNOWN) 1043 return -1; 1044 /* 1045 * NEW packets are send to indicate a discontinuity in the finger 1046 * coordinate reporting. Specifically a finger may have moved from 1047 * slot 0 to 1 or vice versa. INPUT_MT_TRACK takes care of this for 1048 * us. 1049 * 1050 * NEW packets have 3 problems: 1051 * 1) They do not contain middle / right button info (on non clickpads) 1052 * this can be worked around by preserving the old button state 1053 * 2) They do not contain an accurate fingercount, and they are 1054 * typically send when the number of fingers changes. We cannot use 1055 * the old finger count as that may mismatch with the amount of 1056 * touch coordinates we've available in the NEW packet 1057 * 3) Their x data for the second touch is inaccurate leading to 1058 * a possible jump of the x coordinate by 16 units when the first 1059 * non NEW packet comes in 1060 * Since problems 2 & 3 cannot be worked around, just ignore them. 1061 */ 1062 if (pkt_id == V7_PACKET_ID_NEW) 1063 return 1; 1064 1065 alps_get_finger_coordinate_v7(f->mt, p, pkt_id); 1066 1067 if (pkt_id == V7_PACKET_ID_TWO) 1068 f->fingers = alps_get_mt_count(f->mt); 1069 else /* pkt_id == V7_PACKET_ID_MULTI */ 1070 f->fingers = 3 + (p[5] & 0x03); 1071 1072 f->left = (p[0] & 0x80) >> 7; 1073 if (priv->flags & ALPS_BUTTONPAD) { 1074 if (p[0] & 0x20) 1075 f->fingers++; 1076 if (p[0] & 0x10) 1077 f->fingers++; 1078 } else { 1079 f->right = (p[0] & 0x20) >> 5; 1080 f->middle = (p[0] & 0x10) >> 4; 1081 } 1082 1083 /* Sometimes a single touch is reported in mt[1] rather then mt[0] */ 1084 if (f->fingers == 1 && f->mt[0].x == 0 && f->mt[0].y == 0) { 1085 f->mt[0].x = f->mt[1].x; 1086 f->mt[0].y = f->mt[1].y; 1087 f->mt[1].x = 0; 1088 f->mt[1].y = 0; 1089 } 1090 1091 return 0; 1092 } 1093 1094 static void alps_process_trackstick_packet_v7(struct psmouse *psmouse) 1095 { 1096 struct alps_data *priv = psmouse->private; 1097 unsigned char *packet = psmouse->packet; 1098 struct input_dev *dev2 = priv->dev2; 1099 int x, y, z, left, right, middle; 1100 1101 /* It should be a DualPoint when received trackstick packet */ 1102 if (!(priv->flags & ALPS_DUALPOINT)) { 1103 psmouse_warn(psmouse, 1104 "Rejected trackstick packet from non DualPoint device"); 1105 return; 1106 } 1107 1108 x = ((packet[2] & 0xbf)) | ((packet[3] & 0x10) << 2); 1109 y = (packet[3] & 0x07) | (packet[4] & 0xb8) | 1110 ((packet[3] & 0x20) << 1); 1111 z = (packet[5] & 0x3f) | ((packet[3] & 0x80) >> 1); 1112 1113 left = (packet[1] & 0x01); 1114 right = (packet[1] & 0x02) >> 1; 1115 middle = (packet[1] & 0x04) >> 2; 1116 1117 input_report_rel(dev2, REL_X, (char)x); 1118 input_report_rel(dev2, REL_Y, -((char)y)); 1119 1120 input_report_key(dev2, BTN_LEFT, left); 1121 input_report_key(dev2, BTN_RIGHT, right); 1122 input_report_key(dev2, BTN_MIDDLE, middle); 1123 1124 input_sync(dev2); 1125 } 1126 1127 static void alps_process_touchpad_packet_v7(struct psmouse *psmouse) 1128 { 1129 struct alps_data *priv = psmouse->private; 1130 struct input_dev *dev = psmouse->dev; 1131 struct alps_fields *f = &priv->f; 1132 1133 memset(f, 0, sizeof(*f)); 1134 1135 if (priv->decode_fields(f, psmouse->packet, psmouse)) 1136 return; 1137 1138 alps_report_mt_data(psmouse, alps_get_mt_count(f->mt)); 1139 1140 input_mt_report_finger_count(dev, f->fingers); 1141 1142 input_report_key(dev, BTN_LEFT, f->left); 1143 input_report_key(dev, BTN_RIGHT, f->right); 1144 input_report_key(dev, BTN_MIDDLE, f->middle); 1145 1146 input_sync(dev); 1147 } 1148 1149 static void alps_process_packet_v7(struct psmouse *psmouse) 1150 { 1151 unsigned char *packet = psmouse->packet; 1152 1153 if (packet[0] == 0x48 && (packet[4] & 0x47) == 0x06) 1154 alps_process_trackstick_packet_v7(psmouse); 1155 else 1156 alps_process_touchpad_packet_v7(psmouse); 1157 } 1158 1159 static enum SS4_PACKET_ID alps_get_pkt_id_ss4_v2(unsigned char *byte) 1160 { 1161 enum SS4_PACKET_ID pkt_id = SS4_PACKET_ID_IDLE; 1162 1163 switch (byte[3] & 0x30) { 1164 case 0x00: 1165 if (SS4_IS_IDLE_V2(byte)) { 1166 pkt_id = SS4_PACKET_ID_IDLE; 1167 } else { 1168 pkt_id = SS4_PACKET_ID_ONE; 1169 } 1170 break; 1171 case 0x10: 1172 /* two-finger finger positions */ 1173 pkt_id = SS4_PACKET_ID_TWO; 1174 break; 1175 case 0x20: 1176 /* stick pointer */ 1177 pkt_id = SS4_PACKET_ID_STICK; 1178 break; 1179 case 0x30: 1180 /* third and fourth finger positions */ 1181 pkt_id = SS4_PACKET_ID_MULTI; 1182 break; 1183 } 1184 1185 return pkt_id; 1186 } 1187 1188 static int alps_decode_ss4_v2(struct alps_fields *f, 1189 unsigned char *p, struct psmouse *psmouse) 1190 { 1191 struct alps_data *priv = psmouse->private; 1192 enum SS4_PACKET_ID pkt_id; 1193 unsigned int no_data_x, no_data_y; 1194 1195 pkt_id = alps_get_pkt_id_ss4_v2(p); 1196 1197 /* Current packet is 1Finger coordinate packet */ 1198 switch (pkt_id) { 1199 case SS4_PACKET_ID_ONE: 1200 f->mt[0].x = SS4_1F_X_V2(p); 1201 f->mt[0].y = SS4_1F_Y_V2(p); 1202 f->pressure = ((SS4_1F_Z_V2(p)) * 2) & 0x7f; 1203 /* 1204 * When a button is held the device will give us events 1205 * with x, y, and pressure of 0. This causes annoying jumps 1206 * if a touch is released while the button is held. 1207 * Handle this by claiming zero contacts. 1208 */ 1209 f->fingers = f->pressure > 0 ? 1 : 0; 1210 f->first_mp = 0; 1211 f->is_mp = 0; 1212 break; 1213 1214 case SS4_PACKET_ID_TWO: 1215 if (priv->flags & ALPS_BUTTONPAD) { 1216 f->mt[0].x = SS4_BTL_MF_X_V2(p, 0); 1217 f->mt[0].y = SS4_BTL_MF_Y_V2(p, 0); 1218 f->mt[1].x = SS4_BTL_MF_X_V2(p, 1); 1219 f->mt[1].y = SS4_BTL_MF_Y_V2(p, 1); 1220 } else { 1221 f->mt[0].x = SS4_STD_MF_X_V2(p, 0); 1222 f->mt[0].y = SS4_STD_MF_Y_V2(p, 0); 1223 f->mt[1].x = SS4_STD_MF_X_V2(p, 1); 1224 f->mt[1].y = SS4_STD_MF_Y_V2(p, 1); 1225 } 1226 f->pressure = SS4_MF_Z_V2(p, 0) ? 0x30 : 0; 1227 1228 if (SS4_IS_MF_CONTINUE(p)) { 1229 f->first_mp = 1; 1230 } else { 1231 f->fingers = 2; 1232 f->first_mp = 0; 1233 } 1234 f->is_mp = 0; 1235 1236 break; 1237 1238 case SS4_PACKET_ID_MULTI: 1239 if (priv->flags & ALPS_BUTTONPAD) { 1240 f->mt[2].x = SS4_BTL_MF_X_V2(p, 0); 1241 f->mt[2].y = SS4_BTL_MF_Y_V2(p, 0); 1242 f->mt[3].x = SS4_BTL_MF_X_V2(p, 1); 1243 f->mt[3].y = SS4_BTL_MF_Y_V2(p, 1); 1244 no_data_x = SS4_MFPACKET_NO_AX_BL; 1245 no_data_y = SS4_MFPACKET_NO_AY_BL; 1246 } else { 1247 f->mt[2].x = SS4_STD_MF_X_V2(p, 0); 1248 f->mt[2].y = SS4_STD_MF_Y_V2(p, 0); 1249 f->mt[3].x = SS4_STD_MF_X_V2(p, 1); 1250 f->mt[3].y = SS4_STD_MF_Y_V2(p, 1); 1251 no_data_x = SS4_MFPACKET_NO_AX; 1252 no_data_y = SS4_MFPACKET_NO_AY; 1253 } 1254 1255 f->first_mp = 0; 1256 f->is_mp = 1; 1257 1258 if (SS4_IS_5F_DETECTED(p)) { 1259 f->fingers = 5; 1260 } else if (f->mt[3].x == no_data_x && 1261 f->mt[3].y == no_data_y) { 1262 f->mt[3].x = 0; 1263 f->mt[3].y = 0; 1264 f->fingers = 3; 1265 } else { 1266 f->fingers = 4; 1267 } 1268 break; 1269 1270 case SS4_PACKET_ID_STICK: 1271 /* 1272 * x, y, and pressure are decoded in 1273 * alps_process_packet_ss4_v2() 1274 */ 1275 f->first_mp = 0; 1276 f->is_mp = 0; 1277 break; 1278 1279 case SS4_PACKET_ID_IDLE: 1280 default: 1281 memset(f, 0, sizeof(struct alps_fields)); 1282 break; 1283 } 1284 1285 /* handle buttons */ 1286 if (pkt_id == SS4_PACKET_ID_STICK) { 1287 f->ts_left = !!(SS4_BTN_V2(p) & 0x01); 1288 if (!(priv->flags & ALPS_BUTTONPAD)) { 1289 f->ts_right = !!(SS4_BTN_V2(p) & 0x02); 1290 f->ts_middle = !!(SS4_BTN_V2(p) & 0x04); 1291 } 1292 } else { 1293 f->left = !!(SS4_BTN_V2(p) & 0x01); 1294 if (!(priv->flags & ALPS_BUTTONPAD)) { 1295 f->right = !!(SS4_BTN_V2(p) & 0x02); 1296 f->middle = !!(SS4_BTN_V2(p) & 0x04); 1297 } 1298 } 1299 1300 return 0; 1301 } 1302 1303 static void alps_process_packet_ss4_v2(struct psmouse *psmouse) 1304 { 1305 struct alps_data *priv = psmouse->private; 1306 unsigned char *packet = psmouse->packet; 1307 struct input_dev *dev = psmouse->dev; 1308 struct input_dev *dev2 = priv->dev2; 1309 struct alps_fields *f = &priv->f; 1310 1311 memset(f, 0, sizeof(struct alps_fields)); 1312 priv->decode_fields(f, packet, psmouse); 1313 if (priv->multi_packet) { 1314 /* 1315 * Sometimes the first packet will indicate a multi-packet 1316 * sequence, but sometimes the next multi-packet would not 1317 * come. Check for this, and when it happens process the 1318 * position packet as usual. 1319 */ 1320 if (f->is_mp) { 1321 /* Now process the 1st packet */ 1322 priv->decode_fields(f, priv->multi_data, psmouse); 1323 } else { 1324 priv->multi_packet = 0; 1325 } 1326 } 1327 1328 /* 1329 * "f.is_mp" would always be '0' after merging the 1st and 2nd packet. 1330 * When it is set, it means 2nd packet comes without 1st packet come. 1331 */ 1332 if (f->is_mp) 1333 return; 1334 1335 /* Save the first packet */ 1336 if (!priv->multi_packet && f->first_mp) { 1337 priv->multi_packet = 1; 1338 memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); 1339 return; 1340 } 1341 1342 priv->multi_packet = 0; 1343 1344 /* Report trackstick */ 1345 if (alps_get_pkt_id_ss4_v2(packet) == SS4_PACKET_ID_STICK) { 1346 if (!(priv->flags & ALPS_DUALPOINT)) { 1347 psmouse_warn(psmouse, 1348 "Rejected trackstick packet from non DualPoint device"); 1349 return; 1350 } 1351 1352 input_report_rel(dev2, REL_X, SS4_TS_X_V2(packet)); 1353 input_report_rel(dev2, REL_Y, SS4_TS_Y_V2(packet)); 1354 input_report_abs(dev2, ABS_PRESSURE, SS4_TS_Z_V2(packet)); 1355 1356 input_report_key(dev2, BTN_LEFT, f->ts_left); 1357 input_report_key(dev2, BTN_RIGHT, f->ts_right); 1358 input_report_key(dev2, BTN_MIDDLE, f->ts_middle); 1359 1360 input_sync(dev2); 1361 return; 1362 } 1363 1364 /* Report touchpad */ 1365 alps_report_mt_data(psmouse, (f->fingers <= 4) ? f->fingers : 4); 1366 1367 input_mt_report_finger_count(dev, f->fingers); 1368 1369 input_report_key(dev, BTN_LEFT, f->left); 1370 input_report_key(dev, BTN_RIGHT, f->right); 1371 input_report_key(dev, BTN_MIDDLE, f->middle); 1372 1373 input_report_abs(dev, ABS_PRESSURE, f->pressure); 1374 input_sync(dev); 1375 } 1376 1377 static bool alps_is_valid_package_ss4_v2(struct psmouse *psmouse) 1378 { 1379 if (psmouse->pktcnt == 4 && ((psmouse->packet[3] & 0x08) != 0x08)) 1380 return false; 1381 if (psmouse->pktcnt == 6 && ((psmouse->packet[5] & 0x10) != 0x0)) 1382 return false; 1383 return true; 1384 } 1385 1386 static DEFINE_MUTEX(alps_mutex); 1387 1388 static void alps_register_bare_ps2_mouse(struct work_struct *work) 1389 { 1390 struct alps_data *priv = 1391 container_of(work, struct alps_data, dev3_register_work.work); 1392 struct psmouse *psmouse = priv->psmouse; 1393 struct input_dev *dev3; 1394 int error = 0; 1395 1396 mutex_lock(&alps_mutex); 1397 1398 if (priv->dev3) 1399 goto out; 1400 1401 dev3 = input_allocate_device(); 1402 if (!dev3) { 1403 psmouse_err(psmouse, "failed to allocate secondary device\n"); 1404 error = -ENOMEM; 1405 goto out; 1406 } 1407 1408 snprintf(priv->phys3, sizeof(priv->phys3), "%s/%s", 1409 psmouse->ps2dev.serio->phys, 1410 (priv->dev2 ? "input2" : "input1")); 1411 dev3->phys = priv->phys3; 1412 1413 /* 1414 * format of input device name is: "protocol vendor name" 1415 * see function psmouse_switch_protocol() in psmouse-base.c 1416 */ 1417 dev3->name = "PS/2 ALPS Mouse"; 1418 1419 dev3->id.bustype = BUS_I8042; 1420 dev3->id.vendor = 0x0002; 1421 dev3->id.product = PSMOUSE_PS2; 1422 dev3->id.version = 0x0000; 1423 dev3->dev.parent = &psmouse->ps2dev.serio->dev; 1424 1425 input_set_capability(dev3, EV_REL, REL_X); 1426 input_set_capability(dev3, EV_REL, REL_Y); 1427 input_set_capability(dev3, EV_KEY, BTN_LEFT); 1428 input_set_capability(dev3, EV_KEY, BTN_RIGHT); 1429 input_set_capability(dev3, EV_KEY, BTN_MIDDLE); 1430 1431 __set_bit(INPUT_PROP_POINTER, dev3->propbit); 1432 1433 error = input_register_device(dev3); 1434 if (error) { 1435 psmouse_err(psmouse, 1436 "failed to register secondary device: %d\n", 1437 error); 1438 input_free_device(dev3); 1439 goto out; 1440 } 1441 1442 priv->dev3 = dev3; 1443 1444 out: 1445 /* 1446 * Save the error code so that we can detect that we 1447 * already tried to create the device. 1448 */ 1449 if (error) 1450 priv->dev3 = ERR_PTR(error); 1451 1452 mutex_unlock(&alps_mutex); 1453 } 1454 1455 static void alps_report_bare_ps2_packet(struct psmouse *psmouse, 1456 unsigned char packet[], 1457 bool report_buttons) 1458 { 1459 struct alps_data *priv = psmouse->private; 1460 struct input_dev *dev, *dev2 = NULL; 1461 1462 /* Figure out which device to use to report the bare packet */ 1463 if (priv->proto_version == ALPS_PROTO_V2 && 1464 (priv->flags & ALPS_DUALPOINT)) { 1465 /* On V2 devices the DualPoint Stick reports bare packets */ 1466 dev = priv->dev2; 1467 dev2 = psmouse->dev; 1468 } else if (unlikely(IS_ERR_OR_NULL(priv->dev3))) { 1469 /* Register dev3 mouse if we received PS/2 packet first time */ 1470 if (!IS_ERR(priv->dev3)) 1471 psmouse_queue_work(psmouse, &priv->dev3_register_work, 1472 0); 1473 return; 1474 } else { 1475 dev = priv->dev3; 1476 } 1477 1478 if (report_buttons) 1479 alps_report_buttons(dev, dev2, 1480 packet[0] & 1, packet[0] & 2, packet[0] & 4); 1481 1482 input_report_rel(dev, REL_X, 1483 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0); 1484 input_report_rel(dev, REL_Y, 1485 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0); 1486 1487 input_sync(dev); 1488 } 1489 1490 static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse) 1491 { 1492 struct alps_data *priv = psmouse->private; 1493 1494 if (psmouse->pktcnt < 6) 1495 return PSMOUSE_GOOD_DATA; 1496 1497 if (psmouse->pktcnt == 6) { 1498 /* 1499 * Start a timer to flush the packet if it ends up last 1500 * 6-byte packet in the stream. Timer needs to fire 1501 * psmouse core times out itself. 20 ms should be enough 1502 * to decide if we are getting more data or not. 1503 */ 1504 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20)); 1505 return PSMOUSE_GOOD_DATA; 1506 } 1507 1508 del_timer(&priv->timer); 1509 1510 if (psmouse->packet[6] & 0x80) { 1511 1512 /* 1513 * Highest bit is set - that means we either had 1514 * complete ALPS packet and this is start of the 1515 * next packet or we got garbage. 1516 */ 1517 1518 if (((psmouse->packet[3] | 1519 psmouse->packet[4] | 1520 psmouse->packet[5]) & 0x80) || 1521 (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) { 1522 psmouse_dbg(psmouse, 1523 "refusing packet %4ph (suspected interleaved ps/2)\n", 1524 psmouse->packet + 3); 1525 return PSMOUSE_BAD_DATA; 1526 } 1527 1528 priv->process_packet(psmouse); 1529 1530 /* Continue with the next packet */ 1531 psmouse->packet[0] = psmouse->packet[6]; 1532 psmouse->pktcnt = 1; 1533 1534 } else { 1535 1536 /* 1537 * High bit is 0 - that means that we indeed got a PS/2 1538 * packet in the middle of ALPS packet. 1539 * 1540 * There is also possibility that we got 6-byte ALPS 1541 * packet followed by 3-byte packet from trackpoint. We 1542 * can not distinguish between these 2 scenarios but 1543 * because the latter is unlikely to happen in course of 1544 * normal operation (user would need to press all 1545 * buttons on the pad and start moving trackpoint 1546 * without touching the pad surface) we assume former. 1547 * Even if we are wrong the wost thing that would happen 1548 * the cursor would jump but we should not get protocol 1549 * de-synchronization. 1550 */ 1551 1552 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3], 1553 false); 1554 1555 /* 1556 * Continue with the standard ALPS protocol handling, 1557 * but make sure we won't process it as an interleaved 1558 * packet again, which may happen if all buttons are 1559 * pressed. To avoid this let's reset the 4th bit which 1560 * is normally 1. 1561 */ 1562 psmouse->packet[3] = psmouse->packet[6] & 0xf7; 1563 psmouse->pktcnt = 4; 1564 } 1565 1566 return PSMOUSE_GOOD_DATA; 1567 } 1568 1569 static void alps_flush_packet(unsigned long data) 1570 { 1571 struct psmouse *psmouse = (struct psmouse *)data; 1572 struct alps_data *priv = psmouse->private; 1573 1574 serio_pause_rx(psmouse->ps2dev.serio); 1575 1576 if (psmouse->pktcnt == psmouse->pktsize) { 1577 1578 /* 1579 * We did not any more data in reasonable amount of time. 1580 * Validate the last 3 bytes and process as a standard 1581 * ALPS packet. 1582 */ 1583 if ((psmouse->packet[3] | 1584 psmouse->packet[4] | 1585 psmouse->packet[5]) & 0x80) { 1586 psmouse_dbg(psmouse, 1587 "refusing packet %3ph (suspected interleaved ps/2)\n", 1588 psmouse->packet + 3); 1589 } else { 1590 priv->process_packet(psmouse); 1591 } 1592 psmouse->pktcnt = 0; 1593 } 1594 1595 serio_continue_rx(psmouse->ps2dev.serio); 1596 } 1597 1598 static psmouse_ret_t alps_process_byte(struct psmouse *psmouse) 1599 { 1600 struct alps_data *priv = psmouse->private; 1601 1602 /* 1603 * Check if we are dealing with a bare PS/2 packet, presumably from 1604 * a device connected to the external PS/2 port. Because bare PS/2 1605 * protocol does not have enough constant bits to self-synchronize 1606 * properly we only do this if the device is fully synchronized. 1607 * Can not distinguish V8's first byte from PS/2 packet's 1608 */ 1609 if (priv->proto_version != ALPS_PROTO_V8 && 1610 !psmouse->out_of_sync_cnt && 1611 (psmouse->packet[0] & 0xc8) == 0x08) { 1612 1613 if (psmouse->pktcnt == 3) { 1614 alps_report_bare_ps2_packet(psmouse, psmouse->packet, 1615 true); 1616 return PSMOUSE_FULL_PACKET; 1617 } 1618 return PSMOUSE_GOOD_DATA; 1619 } 1620 1621 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */ 1622 1623 if ((priv->flags & ALPS_PS2_INTERLEAVED) && 1624 psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) { 1625 return alps_handle_interleaved_ps2(psmouse); 1626 } 1627 1628 if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) { 1629 psmouse_dbg(psmouse, 1630 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n", 1631 psmouse->packet[0], priv->mask0, priv->byte0); 1632 return PSMOUSE_BAD_DATA; 1633 } 1634 1635 /* Bytes 2 - pktsize should have 0 in the highest bit */ 1636 if (priv->proto_version < ALPS_PROTO_V5 && 1637 psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize && 1638 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) { 1639 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1640 psmouse->pktcnt - 1, 1641 psmouse->packet[psmouse->pktcnt - 1]); 1642 1643 if (priv->proto_version == ALPS_PROTO_V3_RUSHMORE && 1644 psmouse->pktcnt == psmouse->pktsize) { 1645 /* 1646 * Some Dell boxes, such as Latitude E6440 or E7440 1647 * with closed lid, quite often smash last byte of 1648 * otherwise valid packet with 0xff. Given that the 1649 * next packet is very likely to be valid let's 1650 * report PSMOUSE_FULL_PACKET but not process data, 1651 * rather than reporting PSMOUSE_BAD_DATA and 1652 * filling the logs. 1653 */ 1654 return PSMOUSE_FULL_PACKET; 1655 } 1656 1657 return PSMOUSE_BAD_DATA; 1658 } 1659 1660 if ((priv->proto_version == ALPS_PROTO_V7 && 1661 !alps_is_valid_package_v7(psmouse)) || 1662 (priv->proto_version == ALPS_PROTO_V8 && 1663 !alps_is_valid_package_ss4_v2(psmouse))) { 1664 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1665 psmouse->pktcnt - 1, 1666 psmouse->packet[psmouse->pktcnt - 1]); 1667 return PSMOUSE_BAD_DATA; 1668 } 1669 1670 if (psmouse->pktcnt == psmouse->pktsize) { 1671 priv->process_packet(psmouse); 1672 return PSMOUSE_FULL_PACKET; 1673 } 1674 1675 return PSMOUSE_GOOD_DATA; 1676 } 1677 1678 static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble) 1679 { 1680 struct ps2dev *ps2dev = &psmouse->ps2dev; 1681 struct alps_data *priv = psmouse->private; 1682 int command; 1683 unsigned char *param; 1684 unsigned char dummy[4]; 1685 1686 BUG_ON(nibble > 0xf); 1687 1688 command = priv->nibble_commands[nibble].command; 1689 param = (command & 0x0f00) ? 1690 dummy : (unsigned char *)&priv->nibble_commands[nibble].data; 1691 1692 if (ps2_command(ps2dev, param, command)) 1693 return -1; 1694 1695 return 0; 1696 } 1697 1698 static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr) 1699 { 1700 struct ps2dev *ps2dev = &psmouse->ps2dev; 1701 struct alps_data *priv = psmouse->private; 1702 int i, nibble; 1703 1704 if (ps2_command(ps2dev, NULL, priv->addr_command)) 1705 return -1; 1706 1707 for (i = 12; i >= 0; i -= 4) { 1708 nibble = (addr >> i) & 0xf; 1709 if (alps_command_mode_send_nibble(psmouse, nibble)) 1710 return -1; 1711 } 1712 1713 return 0; 1714 } 1715 1716 static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1717 { 1718 struct ps2dev *ps2dev = &psmouse->ps2dev; 1719 unsigned char param[4]; 1720 1721 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1722 return -1; 1723 1724 /* 1725 * The address being read is returned in the first two bytes 1726 * of the result. Check that this address matches the expected 1727 * address. 1728 */ 1729 if (addr != ((param[0] << 8) | param[1])) 1730 return -1; 1731 1732 return param[2]; 1733 } 1734 1735 static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1736 { 1737 if (alps_command_mode_set_addr(psmouse, addr)) 1738 return -1; 1739 return __alps_command_mode_read_reg(psmouse, addr); 1740 } 1741 1742 static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value) 1743 { 1744 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf)) 1745 return -1; 1746 if (alps_command_mode_send_nibble(psmouse, value & 0xf)) 1747 return -1; 1748 return 0; 1749 } 1750 1751 static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr, 1752 u8 value) 1753 { 1754 if (alps_command_mode_set_addr(psmouse, addr)) 1755 return -1; 1756 return __alps_command_mode_write_reg(psmouse, value); 1757 } 1758 1759 static int alps_rpt_cmd(struct psmouse *psmouse, int init_command, 1760 int repeated_command, unsigned char *param) 1761 { 1762 struct ps2dev *ps2dev = &psmouse->ps2dev; 1763 1764 param[0] = 0; 1765 if (init_command && ps2_command(ps2dev, param, init_command)) 1766 return -EIO; 1767 1768 if (ps2_command(ps2dev, NULL, repeated_command) || 1769 ps2_command(ps2dev, NULL, repeated_command) || 1770 ps2_command(ps2dev, NULL, repeated_command)) 1771 return -EIO; 1772 1773 param[0] = param[1] = param[2] = 0xff; 1774 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1775 return -EIO; 1776 1777 psmouse_dbg(psmouse, "%2.2X report: %3ph\n", 1778 repeated_command, param); 1779 return 0; 1780 } 1781 1782 static bool alps_check_valid_firmware_id(unsigned char id[]) 1783 { 1784 if (id[0] == 0x73) 1785 return true; 1786 1787 if (id[0] == 0x88 && 1788 (id[1] == 0x07 || 1789 id[1] == 0x08 || 1790 (id[1] & 0xf0) == 0xb0 || 1791 (id[1] & 0xf0) == 0xc0)) { 1792 return true; 1793 } 1794 1795 return false; 1796 } 1797 1798 static int alps_enter_command_mode(struct psmouse *psmouse) 1799 { 1800 unsigned char param[4]; 1801 1802 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) { 1803 psmouse_err(psmouse, "failed to enter command mode\n"); 1804 return -1; 1805 } 1806 1807 if (!alps_check_valid_firmware_id(param)) { 1808 psmouse_dbg(psmouse, 1809 "unknown response while entering command mode\n"); 1810 return -1; 1811 } 1812 return 0; 1813 } 1814 1815 static inline int alps_exit_command_mode(struct psmouse *psmouse) 1816 { 1817 struct ps2dev *ps2dev = &psmouse->ps2dev; 1818 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) 1819 return -1; 1820 return 0; 1821 } 1822 1823 /* 1824 * For DualPoint devices select the device that should respond to 1825 * subsequent commands. It looks like glidepad is behind stickpointer, 1826 * I'd thought it would be other way around... 1827 */ 1828 static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable) 1829 { 1830 struct ps2dev *ps2dev = &psmouse->ps2dev; 1831 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11; 1832 1833 if (ps2_command(ps2dev, NULL, cmd) || 1834 ps2_command(ps2dev, NULL, cmd) || 1835 ps2_command(ps2dev, NULL, cmd) || 1836 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1837 return -1; 1838 1839 /* we may get 3 more bytes, just ignore them */ 1840 ps2_drain(ps2dev, 3, 100); 1841 1842 return 0; 1843 } 1844 1845 static int alps_absolute_mode_v1_v2(struct psmouse *psmouse) 1846 { 1847 struct ps2dev *ps2dev = &psmouse->ps2dev; 1848 1849 /* Try ALPS magic knock - 4 disable before enable */ 1850 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1851 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1852 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1853 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1854 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) 1855 return -1; 1856 1857 /* 1858 * Switch mouse to poll (remote) mode so motion data will not 1859 * get in our way 1860 */ 1861 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL); 1862 } 1863 1864 static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word) 1865 { 1866 int i, nibble; 1867 1868 /* 1869 * b0-b11 are valid bits, send sequence is inverse. 1870 * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1 1871 */ 1872 for (i = 0; i <= 8; i += 4) { 1873 nibble = (word >> i) & 0xf; 1874 if (alps_command_mode_send_nibble(psmouse, nibble)) 1875 return -1; 1876 } 1877 1878 return 0; 1879 } 1880 1881 static int alps_monitor_mode_write_reg(struct psmouse *psmouse, 1882 u16 addr, u16 value) 1883 { 1884 struct ps2dev *ps2dev = &psmouse->ps2dev; 1885 1886 /* 0x0A0 is the command to write the word */ 1887 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) || 1888 alps_monitor_mode_send_word(psmouse, 0x0A0) || 1889 alps_monitor_mode_send_word(psmouse, addr) || 1890 alps_monitor_mode_send_word(psmouse, value) || 1891 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1892 return -1; 1893 1894 return 0; 1895 } 1896 1897 static int alps_monitor_mode(struct psmouse *psmouse, bool enable) 1898 { 1899 struct ps2dev *ps2dev = &psmouse->ps2dev; 1900 1901 if (enable) { 1902 /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */ 1903 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 1904 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) || 1905 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1906 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1907 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1908 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1909 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1910 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO)) 1911 return -1; 1912 } else { 1913 /* EC to exit monitor mode */ 1914 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP)) 1915 return -1; 1916 } 1917 1918 return 0; 1919 } 1920 1921 static int alps_absolute_mode_v6(struct psmouse *psmouse) 1922 { 1923 u16 reg_val = 0x181; 1924 int ret = -1; 1925 1926 /* enter monitor mode, to write the register */ 1927 if (alps_monitor_mode(psmouse, true)) 1928 return -1; 1929 1930 ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val); 1931 1932 if (alps_monitor_mode(psmouse, false)) 1933 ret = -1; 1934 1935 return ret; 1936 } 1937 1938 static int alps_get_status(struct psmouse *psmouse, char *param) 1939 { 1940 /* Get status: 0xF5 0xF5 0xF5 0xE9 */ 1941 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param)) 1942 return -1; 1943 1944 return 0; 1945 } 1946 1947 /* 1948 * Turn touchpad tapping on or off. The sequences are: 1949 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable, 1950 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable. 1951 * My guess that 0xE9 (GetInfo) is here as a sync point. 1952 * For models that also have stickpointer (DualPoints) its tapping 1953 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but 1954 * we don't fiddle with it. 1955 */ 1956 static int alps_tap_mode(struct psmouse *psmouse, int enable) 1957 { 1958 struct ps2dev *ps2dev = &psmouse->ps2dev; 1959 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES; 1960 unsigned char tap_arg = enable ? 0x0A : 0x00; 1961 unsigned char param[4]; 1962 1963 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) || 1964 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1965 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1966 ps2_command(ps2dev, &tap_arg, cmd)) 1967 return -1; 1968 1969 if (alps_get_status(psmouse, param)) 1970 return -1; 1971 1972 return 0; 1973 } 1974 1975 /* 1976 * alps_poll() - poll the touchpad for current motion packet. 1977 * Used in resync. 1978 */ 1979 static int alps_poll(struct psmouse *psmouse) 1980 { 1981 struct alps_data *priv = psmouse->private; 1982 unsigned char buf[sizeof(psmouse->packet)]; 1983 bool poll_failed; 1984 1985 if (priv->flags & ALPS_PASS) 1986 alps_passthrough_mode_v2(psmouse, true); 1987 1988 poll_failed = ps2_command(&psmouse->ps2dev, buf, 1989 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0; 1990 1991 if (priv->flags & ALPS_PASS) 1992 alps_passthrough_mode_v2(psmouse, false); 1993 1994 if (poll_failed || (buf[0] & priv->mask0) != priv->byte0) 1995 return -1; 1996 1997 if ((psmouse->badbyte & 0xc8) == 0x08) { 1998 /* 1999 * Poll the track stick ... 2000 */ 2001 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8))) 2002 return -1; 2003 } 2004 2005 memcpy(psmouse->packet, buf, sizeof(buf)); 2006 return 0; 2007 } 2008 2009 static int alps_hw_init_v1_v2(struct psmouse *psmouse) 2010 { 2011 struct alps_data *priv = psmouse->private; 2012 2013 if ((priv->flags & ALPS_PASS) && 2014 alps_passthrough_mode_v2(psmouse, true)) { 2015 return -1; 2016 } 2017 2018 if (alps_tap_mode(psmouse, true)) { 2019 psmouse_warn(psmouse, "Failed to enable hardware tapping\n"); 2020 return -1; 2021 } 2022 2023 if (alps_absolute_mode_v1_v2(psmouse)) { 2024 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 2025 return -1; 2026 } 2027 2028 if ((priv->flags & ALPS_PASS) && 2029 alps_passthrough_mode_v2(psmouse, false)) { 2030 return -1; 2031 } 2032 2033 /* ALPS needs stream mode, otherwise it won't report any data */ 2034 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) { 2035 psmouse_err(psmouse, "Failed to enable stream mode\n"); 2036 return -1; 2037 } 2038 2039 return 0; 2040 } 2041 2042 static int alps_hw_init_v6(struct psmouse *psmouse) 2043 { 2044 unsigned char param[2] = {0xC8, 0x14}; 2045 2046 /* Enter passthrough mode to let trackpoint enter 6byte raw mode */ 2047 if (alps_passthrough_mode_v2(psmouse, true)) 2048 return -1; 2049 2050 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2051 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2052 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2053 ps2_command(&psmouse->ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2054 ps2_command(&psmouse->ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 2055 return -1; 2056 2057 if (alps_passthrough_mode_v2(psmouse, false)) 2058 return -1; 2059 2060 if (alps_absolute_mode_v6(psmouse)) { 2061 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 2062 return -1; 2063 } 2064 2065 return 0; 2066 } 2067 2068 /* 2069 * Enable or disable passthrough mode to the trackstick. 2070 */ 2071 static int alps_passthrough_mode_v3(struct psmouse *psmouse, 2072 int reg_base, bool enable) 2073 { 2074 int reg_val, ret = -1; 2075 2076 if (alps_enter_command_mode(psmouse)) 2077 return -1; 2078 2079 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008); 2080 if (reg_val == -1) 2081 goto error; 2082 2083 if (enable) 2084 reg_val |= 0x01; 2085 else 2086 reg_val &= ~0x01; 2087 2088 ret = __alps_command_mode_write_reg(psmouse, reg_val); 2089 2090 error: 2091 if (alps_exit_command_mode(psmouse)) 2092 ret = -1; 2093 return ret; 2094 } 2095 2096 /* Must be in command mode when calling this function */ 2097 static int alps_absolute_mode_v3(struct psmouse *psmouse) 2098 { 2099 int reg_val; 2100 2101 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 2102 if (reg_val == -1) 2103 return -1; 2104 2105 reg_val |= 0x06; 2106 if (__alps_command_mode_write_reg(psmouse, reg_val)) 2107 return -1; 2108 2109 return 0; 2110 } 2111 2112 static int alps_probe_trackstick_v3_v7(struct psmouse *psmouse, int reg_base) 2113 { 2114 int ret = -EIO, reg_val; 2115 2116 if (alps_enter_command_mode(psmouse)) 2117 goto error; 2118 2119 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08); 2120 if (reg_val == -1) 2121 goto error; 2122 2123 /* bit 7: trackstick is present */ 2124 ret = reg_val & 0x80 ? 0 : -ENODEV; 2125 2126 error: 2127 alps_exit_command_mode(psmouse); 2128 return ret; 2129 } 2130 2131 static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base) 2132 { 2133 struct ps2dev *ps2dev = &psmouse->ps2dev; 2134 int ret = 0; 2135 unsigned char param[4]; 2136 2137 if (alps_passthrough_mode_v3(psmouse, reg_base, true)) 2138 return -EIO; 2139 2140 /* 2141 * E7 report for the trackstick 2142 * 2143 * There have been reports of failures to seem to trace back 2144 * to the above trackstick check failing. When these occur 2145 * this E7 report fails, so when that happens we continue 2146 * with the assumption that there isn't a trackstick after 2147 * all. 2148 */ 2149 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) { 2150 psmouse_warn(psmouse, "Failed to initialize trackstick (E7 report failed)\n"); 2151 ret = -ENODEV; 2152 } else { 2153 psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param); 2154 2155 /* 2156 * Not sure what this does, but it is absolutely 2157 * essential. Without it, the touchpad does not 2158 * work at all and the trackstick just emits normal 2159 * PS/2 packets. 2160 */ 2161 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2162 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2163 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2164 alps_command_mode_send_nibble(psmouse, 0x9) || 2165 alps_command_mode_send_nibble(psmouse, 0x4)) { 2166 psmouse_err(psmouse, 2167 "Error sending magic E6 sequence\n"); 2168 ret = -EIO; 2169 goto error; 2170 } 2171 2172 /* 2173 * This ensures the trackstick packets are in the format 2174 * supported by this driver. If bit 1 isn't set the packet 2175 * format is different. 2176 */ 2177 if (alps_enter_command_mode(psmouse) || 2178 alps_command_mode_write_reg(psmouse, 2179 reg_base + 0x08, 0x82) || 2180 alps_exit_command_mode(psmouse)) 2181 ret = -EIO; 2182 } 2183 2184 error: 2185 if (alps_passthrough_mode_v3(psmouse, reg_base, false)) 2186 ret = -EIO; 2187 2188 return ret; 2189 } 2190 2191 static int alps_hw_init_v3(struct psmouse *psmouse) 2192 { 2193 struct alps_data *priv = psmouse->private; 2194 struct ps2dev *ps2dev = &psmouse->ps2dev; 2195 int reg_val; 2196 unsigned char param[4]; 2197 2198 if ((priv->flags & ALPS_DUALPOINT) && 2199 alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO) 2200 goto error; 2201 2202 if (alps_enter_command_mode(psmouse) || 2203 alps_absolute_mode_v3(psmouse)) { 2204 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 2205 goto error; 2206 } 2207 2208 reg_val = alps_command_mode_read_reg(psmouse, 0x0006); 2209 if (reg_val == -1) 2210 goto error; 2211 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 2212 goto error; 2213 2214 reg_val = alps_command_mode_read_reg(psmouse, 0x0007); 2215 if (reg_val == -1) 2216 goto error; 2217 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 2218 goto error; 2219 2220 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1) 2221 goto error; 2222 if (__alps_command_mode_write_reg(psmouse, 0x04)) 2223 goto error; 2224 2225 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1) 2226 goto error; 2227 if (__alps_command_mode_write_reg(psmouse, 0x03)) 2228 goto error; 2229 2230 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1) 2231 goto error; 2232 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03)) 2233 goto error; 2234 2235 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1) 2236 goto error; 2237 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04)) 2238 goto error; 2239 2240 alps_exit_command_mode(psmouse); 2241 2242 /* Set rate and enable data reporting */ 2243 param[0] = 0x64; 2244 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 2245 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 2246 psmouse_err(psmouse, "Failed to enable data reporting\n"); 2247 return -1; 2248 } 2249 2250 return 0; 2251 2252 error: 2253 /* 2254 * Leaving the touchpad in command mode will essentially render 2255 * it unusable until the machine reboots, so exit it here just 2256 * to be safe 2257 */ 2258 alps_exit_command_mode(psmouse); 2259 return -1; 2260 } 2261 2262 static int alps_get_v3_v7_resolution(struct psmouse *psmouse, int reg_pitch) 2263 { 2264 int reg, x_pitch, y_pitch, x_electrode, y_electrode, x_phys, y_phys; 2265 struct alps_data *priv = psmouse->private; 2266 2267 reg = alps_command_mode_read_reg(psmouse, reg_pitch); 2268 if (reg < 0) 2269 return reg; 2270 2271 x_pitch = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ 2272 x_pitch = 50 + 2 * x_pitch; /* In 0.1 mm units */ 2273 2274 y_pitch = (char)reg >> 4; /* sign extend upper 4 bits */ 2275 y_pitch = 36 + 2 * y_pitch; /* In 0.1 mm units */ 2276 2277 reg = alps_command_mode_read_reg(psmouse, reg_pitch + 1); 2278 if (reg < 0) 2279 return reg; 2280 2281 x_electrode = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ 2282 x_electrode = 17 + x_electrode; 2283 2284 y_electrode = (char)reg >> 4; /* sign extend upper 4 bits */ 2285 y_electrode = 13 + y_electrode; 2286 2287 x_phys = x_pitch * (x_electrode - 1); /* In 0.1 mm units */ 2288 y_phys = y_pitch * (y_electrode - 1); /* In 0.1 mm units */ 2289 2290 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ 2291 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ 2292 2293 psmouse_dbg(psmouse, 2294 "pitch %dx%d num-electrodes %dx%d physical size %dx%d mm res %dx%d\n", 2295 x_pitch, y_pitch, x_electrode, y_electrode, 2296 x_phys / 10, y_phys / 10, priv->x_res, priv->y_res); 2297 2298 return 0; 2299 } 2300 2301 static int alps_hw_init_rushmore_v3(struct psmouse *psmouse) 2302 { 2303 struct alps_data *priv = psmouse->private; 2304 struct ps2dev *ps2dev = &psmouse->ps2dev; 2305 int reg_val, ret = -1; 2306 2307 if (priv->flags & ALPS_DUALPOINT) { 2308 reg_val = alps_setup_trackstick_v3(psmouse, 2309 ALPS_REG_BASE_RUSHMORE); 2310 if (reg_val == -EIO) 2311 goto error; 2312 } 2313 2314 if (alps_enter_command_mode(psmouse) || 2315 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 || 2316 alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00)) 2317 goto error; 2318 2319 if (alps_get_v3_v7_resolution(psmouse, 0xc2da)) 2320 goto error; 2321 2322 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6); 2323 if (reg_val == -1) 2324 goto error; 2325 if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd)) 2326 goto error; 2327 2328 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 2329 goto error; 2330 2331 /* enter absolute mode */ 2332 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 2333 if (reg_val == -1) 2334 goto error; 2335 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 2336 goto error; 2337 2338 alps_exit_command_mode(psmouse); 2339 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2340 2341 error: 2342 alps_exit_command_mode(psmouse); 2343 return ret; 2344 } 2345 2346 /* Must be in command mode when calling this function */ 2347 static int alps_absolute_mode_v4(struct psmouse *psmouse) 2348 { 2349 int reg_val; 2350 2351 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 2352 if (reg_val == -1) 2353 return -1; 2354 2355 reg_val |= 0x02; 2356 if (__alps_command_mode_write_reg(psmouse, reg_val)) 2357 return -1; 2358 2359 return 0; 2360 } 2361 2362 static int alps_hw_init_v4(struct psmouse *psmouse) 2363 { 2364 struct ps2dev *ps2dev = &psmouse->ps2dev; 2365 unsigned char param[4]; 2366 2367 if (alps_enter_command_mode(psmouse)) 2368 goto error; 2369 2370 if (alps_absolute_mode_v4(psmouse)) { 2371 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 2372 goto error; 2373 } 2374 2375 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c)) 2376 goto error; 2377 2378 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03)) 2379 goto error; 2380 2381 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03)) 2382 goto error; 2383 2384 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15)) 2385 goto error; 2386 2387 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01)) 2388 goto error; 2389 2390 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03)) 2391 goto error; 2392 2393 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03)) 2394 goto error; 2395 2396 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03)) 2397 goto error; 2398 2399 alps_exit_command_mode(psmouse); 2400 2401 /* 2402 * This sequence changes the output from a 9-byte to an 2403 * 8-byte format. All the same data seems to be present, 2404 * just in a more compact format. 2405 */ 2406 param[0] = 0xc8; 2407 param[1] = 0x64; 2408 param[2] = 0x50; 2409 if (ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2410 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE) || 2411 ps2_command(ps2dev, ¶m[2], PSMOUSE_CMD_SETRATE) || 2412 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) 2413 return -1; 2414 2415 /* Set rate and enable data reporting */ 2416 param[0] = 0x64; 2417 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 2418 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 2419 psmouse_err(psmouse, "Failed to enable data reporting\n"); 2420 return -1; 2421 } 2422 2423 return 0; 2424 2425 error: 2426 /* 2427 * Leaving the touchpad in command mode will essentially render 2428 * it unusable until the machine reboots, so exit it here just 2429 * to be safe 2430 */ 2431 alps_exit_command_mode(psmouse); 2432 return -1; 2433 } 2434 2435 static int alps_get_otp_values_ss4_v2(struct psmouse *psmouse, 2436 unsigned char index, unsigned char otp[]) 2437 { 2438 struct ps2dev *ps2dev = &psmouse->ps2dev; 2439 2440 switch (index) { 2441 case 0: 2442 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2443 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2444 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) 2445 return -1; 2446 2447 break; 2448 2449 case 1: 2450 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2451 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2452 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) 2453 return -1; 2454 2455 break; 2456 } 2457 2458 return 0; 2459 } 2460 2461 static int alps_update_device_area_ss4_v2(unsigned char otp[][4], 2462 struct alps_data *priv) 2463 { 2464 int num_x_electrode; 2465 int num_y_electrode; 2466 int x_pitch, y_pitch, x_phys, y_phys; 2467 2468 num_x_electrode = SS4_NUMSENSOR_XOFFSET + (otp[1][0] & 0x0F); 2469 num_y_electrode = SS4_NUMSENSOR_YOFFSET + ((otp[1][0] >> 4) & 0x0F); 2470 2471 priv->x_max = (num_x_electrode - 1) * SS4_COUNT_PER_ELECTRODE; 2472 priv->y_max = (num_y_electrode - 1) * SS4_COUNT_PER_ELECTRODE; 2473 2474 x_pitch = ((otp[1][2] >> 2) & 0x07) + SS4_MIN_PITCH_MM; 2475 y_pitch = ((otp[1][2] >> 5) & 0x07) + SS4_MIN_PITCH_MM; 2476 2477 x_phys = x_pitch * (num_x_electrode - 1); /* In 0.1 mm units */ 2478 y_phys = y_pitch * (num_y_electrode - 1); /* In 0.1 mm units */ 2479 2480 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ 2481 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ 2482 2483 return 0; 2484 } 2485 2486 static int alps_update_btn_info_ss4_v2(unsigned char otp[][4], 2487 struct alps_data *priv) 2488 { 2489 unsigned char is_btnless; 2490 2491 is_btnless = (otp[1][1] >> 3) & 0x01; 2492 2493 if (is_btnless) 2494 priv->flags |= ALPS_BUTTONPAD; 2495 2496 return 0; 2497 } 2498 2499 static int alps_set_defaults_ss4_v2(struct psmouse *psmouse, 2500 struct alps_data *priv) 2501 { 2502 unsigned char otp[2][4]; 2503 2504 memset(otp, 0, sizeof(otp)); 2505 2506 if (alps_get_otp_values_ss4_v2(psmouse, 0, &otp[0][0]) || 2507 alps_get_otp_values_ss4_v2(psmouse, 1, &otp[1][0])) 2508 return -1; 2509 2510 alps_update_device_area_ss4_v2(otp, priv); 2511 2512 alps_update_btn_info_ss4_v2(otp, priv); 2513 2514 return 0; 2515 } 2516 2517 static int alps_dolphin_get_device_area(struct psmouse *psmouse, 2518 struct alps_data *priv) 2519 { 2520 struct ps2dev *ps2dev = &psmouse->ps2dev; 2521 unsigned char param[4] = {0}; 2522 int num_x_electrode, num_y_electrode; 2523 2524 if (alps_enter_command_mode(psmouse)) 2525 return -1; 2526 2527 param[0] = 0x0a; 2528 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 2529 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2530 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2531 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2532 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE)) 2533 return -1; 2534 2535 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 2536 return -1; 2537 2538 /* 2539 * Dolphin's sensor line number is not fixed. It can be calculated 2540 * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET. 2541 * Further more, we can get device's x_max and y_max by multiplying 2542 * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE. 2543 * 2544 * e.g. When we get register's sensor_x = 11 & sensor_y = 8, 2545 * real sensor line number X = 11 + 8 = 19, and 2546 * real sensor line number Y = 8 + 1 = 9. 2547 * So, x_max = (19 - 1) * 64 = 1152, and 2548 * y_max = (9 - 1) * 64 = 512. 2549 */ 2550 num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F); 2551 num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F); 2552 priv->x_bits = num_x_electrode; 2553 priv->y_bits = num_y_electrode; 2554 priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2555 priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2556 2557 if (alps_exit_command_mode(psmouse)) 2558 return -1; 2559 2560 return 0; 2561 } 2562 2563 static int alps_hw_init_dolphin_v1(struct psmouse *psmouse) 2564 { 2565 struct ps2dev *ps2dev = &psmouse->ps2dev; 2566 unsigned char param[2]; 2567 2568 /* This is dolphin "v1" as empirically defined by florin9doi */ 2569 param[0] = 0x64; 2570 param[1] = 0x28; 2571 2572 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2573 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2574 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 2575 return -1; 2576 2577 return 0; 2578 } 2579 2580 static int alps_hw_init_v7(struct psmouse *psmouse) 2581 { 2582 struct ps2dev *ps2dev = &psmouse->ps2dev; 2583 int reg_val, ret = -1; 2584 2585 if (alps_enter_command_mode(psmouse) || 2586 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1) 2587 goto error; 2588 2589 if (alps_get_v3_v7_resolution(psmouse, 0xc397)) 2590 goto error; 2591 2592 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 2593 goto error; 2594 2595 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 2596 if (reg_val == -1) 2597 goto error; 2598 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 2599 goto error; 2600 2601 alps_exit_command_mode(psmouse); 2602 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2603 2604 error: 2605 alps_exit_command_mode(psmouse); 2606 return ret; 2607 } 2608 2609 static int alps_hw_init_ss4_v2(struct psmouse *psmouse) 2610 { 2611 struct ps2dev *ps2dev = &psmouse->ps2dev; 2612 char param[2] = {0x64, 0x28}; 2613 int ret = -1; 2614 2615 /* enter absolute mode */ 2616 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2617 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2618 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2619 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) { 2620 goto error; 2621 } 2622 2623 /* T.B.D. Decread noise packet number, delete in the future */ 2624 if (alps_exit_command_mode(psmouse) || 2625 alps_enter_command_mode(psmouse) || 2626 alps_command_mode_write_reg(psmouse, 0x001D, 0x20)) { 2627 goto error; 2628 } 2629 alps_exit_command_mode(psmouse); 2630 2631 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2632 2633 error: 2634 alps_exit_command_mode(psmouse); 2635 return ret; 2636 } 2637 2638 static int alps_set_protocol(struct psmouse *psmouse, 2639 struct alps_data *priv, 2640 const struct alps_protocol_info *protocol) 2641 { 2642 psmouse->private = priv; 2643 2644 setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse); 2645 2646 priv->proto_version = protocol->version; 2647 priv->byte0 = protocol->byte0; 2648 priv->mask0 = protocol->mask0; 2649 priv->flags = protocol->flags; 2650 2651 priv->x_max = 2000; 2652 priv->y_max = 1400; 2653 priv->x_bits = 15; 2654 priv->y_bits = 11; 2655 2656 switch (priv->proto_version) { 2657 case ALPS_PROTO_V1: 2658 case ALPS_PROTO_V2: 2659 priv->hw_init = alps_hw_init_v1_v2; 2660 priv->process_packet = alps_process_packet_v1_v2; 2661 priv->set_abs_params = alps_set_abs_params_st; 2662 priv->x_max = 1023; 2663 priv->y_max = 767; 2664 if (dmi_check_system(alps_dmi_has_separate_stick_buttons)) 2665 priv->flags |= ALPS_STICK_BITS; 2666 break; 2667 2668 case ALPS_PROTO_V3: 2669 priv->hw_init = alps_hw_init_v3; 2670 priv->process_packet = alps_process_packet_v3; 2671 priv->set_abs_params = alps_set_abs_params_semi_mt; 2672 priv->decode_fields = alps_decode_pinnacle; 2673 priv->nibble_commands = alps_v3_nibble_commands; 2674 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2675 2676 if (alps_probe_trackstick_v3_v7(psmouse, 2677 ALPS_REG_BASE_PINNACLE) < 0) 2678 priv->flags &= ~ALPS_DUALPOINT; 2679 2680 break; 2681 2682 case ALPS_PROTO_V3_RUSHMORE: 2683 priv->hw_init = alps_hw_init_rushmore_v3; 2684 priv->process_packet = alps_process_packet_v3; 2685 priv->set_abs_params = alps_set_abs_params_semi_mt; 2686 priv->decode_fields = alps_decode_rushmore; 2687 priv->nibble_commands = alps_v3_nibble_commands; 2688 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2689 priv->x_bits = 16; 2690 priv->y_bits = 12; 2691 2692 if (alps_probe_trackstick_v3_v7(psmouse, 2693 ALPS_REG_BASE_RUSHMORE) < 0) 2694 priv->flags &= ~ALPS_DUALPOINT; 2695 2696 break; 2697 2698 case ALPS_PROTO_V4: 2699 priv->hw_init = alps_hw_init_v4; 2700 priv->process_packet = alps_process_packet_v4; 2701 priv->set_abs_params = alps_set_abs_params_semi_mt; 2702 priv->nibble_commands = alps_v4_nibble_commands; 2703 priv->addr_command = PSMOUSE_CMD_DISABLE; 2704 break; 2705 2706 case ALPS_PROTO_V5: 2707 priv->hw_init = alps_hw_init_dolphin_v1; 2708 priv->process_packet = alps_process_touchpad_packet_v3_v5; 2709 priv->decode_fields = alps_decode_dolphin; 2710 priv->set_abs_params = alps_set_abs_params_semi_mt; 2711 priv->nibble_commands = alps_v3_nibble_commands; 2712 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2713 priv->x_bits = 23; 2714 priv->y_bits = 12; 2715 2716 if (alps_dolphin_get_device_area(psmouse, priv)) 2717 return -EIO; 2718 2719 break; 2720 2721 case ALPS_PROTO_V6: 2722 priv->hw_init = alps_hw_init_v6; 2723 priv->process_packet = alps_process_packet_v6; 2724 priv->set_abs_params = alps_set_abs_params_st; 2725 priv->nibble_commands = alps_v6_nibble_commands; 2726 priv->x_max = 2047; 2727 priv->y_max = 1535; 2728 break; 2729 2730 case ALPS_PROTO_V7: 2731 priv->hw_init = alps_hw_init_v7; 2732 priv->process_packet = alps_process_packet_v7; 2733 priv->decode_fields = alps_decode_packet_v7; 2734 priv->set_abs_params = alps_set_abs_params_v7; 2735 priv->nibble_commands = alps_v3_nibble_commands; 2736 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2737 priv->x_max = 0xfff; 2738 priv->y_max = 0x7ff; 2739 2740 if (priv->fw_ver[1] != 0xba) 2741 priv->flags |= ALPS_BUTTONPAD; 2742 2743 if (alps_probe_trackstick_v3_v7(psmouse, ALPS_REG_BASE_V7) < 0) 2744 priv->flags &= ~ALPS_DUALPOINT; 2745 2746 break; 2747 2748 case ALPS_PROTO_V8: 2749 priv->hw_init = alps_hw_init_ss4_v2; 2750 priv->process_packet = alps_process_packet_ss4_v2; 2751 priv->decode_fields = alps_decode_ss4_v2; 2752 priv->set_abs_params = alps_set_abs_params_ss4_v2; 2753 priv->nibble_commands = alps_v3_nibble_commands; 2754 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2755 2756 if (alps_set_defaults_ss4_v2(psmouse, priv)) 2757 return -EIO; 2758 2759 if (priv->fw_ver[1] == 0x1) 2760 priv->flags |= ALPS_DUALPOINT | 2761 ALPS_DUALPOINT_WITH_PRESSURE; 2762 2763 break; 2764 } 2765 2766 return 0; 2767 } 2768 2769 static const struct alps_protocol_info *alps_match_table(unsigned char *e7, 2770 unsigned char *ec) 2771 { 2772 const struct alps_model_info *model; 2773 int i; 2774 2775 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) { 2776 model = &alps_model_data[i]; 2777 2778 if (!memcmp(e7, model->signature, sizeof(model->signature)) && 2779 (!model->command_mode_resp || 2780 model->command_mode_resp == ec[2])) { 2781 2782 return &model->protocol_info; 2783 } 2784 } 2785 2786 return NULL; 2787 } 2788 2789 static int alps_identify(struct psmouse *psmouse, struct alps_data *priv) 2790 { 2791 const struct alps_protocol_info *protocol; 2792 unsigned char e6[4], e7[4], ec[4]; 2793 int error; 2794 2795 /* 2796 * First try "E6 report". 2797 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed. 2798 * The bits 0-2 of the first byte will be 1s if some buttons are 2799 * pressed. 2800 */ 2801 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2802 PSMOUSE_CMD_SETSCALE11, e6)) 2803 return -EIO; 2804 2805 if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100)) 2806 return -EINVAL; 2807 2808 /* 2809 * Now get the "E7" and "EC" reports. These will uniquely identify 2810 * most ALPS touchpads. 2811 */ 2812 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2813 PSMOUSE_CMD_SETSCALE21, e7) || 2814 alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2815 PSMOUSE_CMD_RESET_WRAP, ec) || 2816 alps_exit_command_mode(psmouse)) 2817 return -EIO; 2818 2819 protocol = alps_match_table(e7, ec); 2820 if (!protocol) { 2821 if (e7[0] == 0x73 && e7[1] == 0x02 && e7[2] == 0x64 && 2822 ec[2] == 0x8a) { 2823 protocol = &alps_v4_protocol_data; 2824 } else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 && 2825 ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) { 2826 protocol = &alps_v5_protocol_data; 2827 } else if (ec[0] == 0x88 && 2828 ((ec[1] & 0xf0) == 0xb0 || (ec[1] & 0xf0) == 0xc0)) { 2829 protocol = &alps_v7_protocol_data; 2830 } else if (ec[0] == 0x88 && ec[1] == 0x08) { 2831 protocol = &alps_v3_rushmore_data; 2832 } else if (ec[0] == 0x88 && ec[1] == 0x07 && 2833 ec[2] >= 0x90 && ec[2] <= 0x9d) { 2834 protocol = &alps_v3_protocol_data; 2835 } else if (e7[0] == 0x73 && e7[1] == 0x03 && 2836 e7[2] == 0x14 && ec[1] == 0x02) { 2837 protocol = &alps_v8_protocol_data; 2838 } else if (e7[0] == 0x73 && e7[1] == 0x03 && 2839 e7[2] == 0x28 && ec[1] == 0x01) { 2840 protocol = &alps_v8_protocol_data; 2841 } else { 2842 psmouse_dbg(psmouse, 2843 "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec); 2844 return -EINVAL; 2845 } 2846 } 2847 2848 if (priv) { 2849 /* Save the Firmware version */ 2850 memcpy(priv->fw_ver, ec, 3); 2851 error = alps_set_protocol(psmouse, priv, protocol); 2852 if (error) 2853 return error; 2854 } 2855 2856 return 0; 2857 } 2858 2859 static int alps_reconnect(struct psmouse *psmouse) 2860 { 2861 struct alps_data *priv = psmouse->private; 2862 2863 psmouse_reset(psmouse); 2864 2865 if (alps_identify(psmouse, priv) < 0) 2866 return -1; 2867 2868 return priv->hw_init(psmouse); 2869 } 2870 2871 static void alps_disconnect(struct psmouse *psmouse) 2872 { 2873 struct alps_data *priv = psmouse->private; 2874 2875 psmouse_reset(psmouse); 2876 del_timer_sync(&priv->timer); 2877 if (priv->dev2) 2878 input_unregister_device(priv->dev2); 2879 if (!IS_ERR_OR_NULL(priv->dev3)) 2880 input_unregister_device(priv->dev3); 2881 kfree(priv); 2882 } 2883 2884 static void alps_set_abs_params_st(struct alps_data *priv, 2885 struct input_dev *dev1) 2886 { 2887 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0); 2888 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0); 2889 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2890 } 2891 2892 static void alps_set_abs_params_mt_common(struct alps_data *priv, 2893 struct input_dev *dev1) 2894 { 2895 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0); 2896 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0); 2897 2898 input_abs_set_res(dev1, ABS_MT_POSITION_X, priv->x_res); 2899 input_abs_set_res(dev1, ABS_MT_POSITION_Y, priv->y_res); 2900 2901 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit); 2902 set_bit(BTN_TOOL_QUADTAP, dev1->keybit); 2903 } 2904 2905 static void alps_set_abs_params_semi_mt(struct alps_data *priv, 2906 struct input_dev *dev1) 2907 { 2908 alps_set_abs_params_mt_common(priv, dev1); 2909 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2910 2911 input_mt_init_slots(dev1, MAX_TOUCHES, 2912 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 2913 INPUT_MT_SEMI_MT); 2914 } 2915 2916 static void alps_set_abs_params_v7(struct alps_data *priv, 2917 struct input_dev *dev1) 2918 { 2919 alps_set_abs_params_mt_common(priv, dev1); 2920 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2921 2922 input_mt_init_slots(dev1, MAX_TOUCHES, 2923 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 2924 INPUT_MT_TRACK); 2925 2926 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2927 } 2928 2929 static void alps_set_abs_params_ss4_v2(struct alps_data *priv, 2930 struct input_dev *dev1) 2931 { 2932 alps_set_abs_params_mt_common(priv, dev1); 2933 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2934 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2935 2936 input_mt_init_slots(dev1, MAX_TOUCHES, 2937 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 2938 INPUT_MT_TRACK); 2939 } 2940 2941 int alps_init(struct psmouse *psmouse) 2942 { 2943 struct alps_data *priv = psmouse->private; 2944 struct input_dev *dev1 = psmouse->dev; 2945 int error; 2946 2947 error = priv->hw_init(psmouse); 2948 if (error) 2949 goto init_fail; 2950 2951 /* 2952 * Undo part of setup done for us by psmouse core since touchpad 2953 * is not a relative device. 2954 */ 2955 __clear_bit(EV_REL, dev1->evbit); 2956 __clear_bit(REL_X, dev1->relbit); 2957 __clear_bit(REL_Y, dev1->relbit); 2958 2959 /* 2960 * Now set up our capabilities. 2961 */ 2962 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY); 2963 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH); 2964 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER); 2965 dev1->keybit[BIT_WORD(BTN_LEFT)] |= 2966 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); 2967 2968 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS); 2969 2970 priv->set_abs_params(priv, dev1); 2971 2972 if (priv->flags & ALPS_WHEEL) { 2973 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL); 2974 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL); 2975 } 2976 2977 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 2978 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD); 2979 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK); 2980 } 2981 2982 if (priv->flags & ALPS_FOUR_BUTTONS) { 2983 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0); 2984 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1); 2985 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2); 2986 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3); 2987 } else if (priv->flags & ALPS_BUTTONPAD) { 2988 set_bit(INPUT_PROP_BUTTONPAD, dev1->propbit); 2989 clear_bit(BTN_RIGHT, dev1->keybit); 2990 } else { 2991 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE); 2992 } 2993 2994 if (priv->flags & ALPS_DUALPOINT) { 2995 struct input_dev *dev2; 2996 2997 dev2 = input_allocate_device(); 2998 if (!dev2) { 2999 psmouse_err(psmouse, 3000 "failed to allocate trackstick device\n"); 3001 error = -ENOMEM; 3002 goto init_fail; 3003 } 3004 3005 snprintf(priv->phys2, sizeof(priv->phys2), "%s/input1", 3006 psmouse->ps2dev.serio->phys); 3007 dev2->phys = priv->phys2; 3008 3009 /* 3010 * format of input device name is: "protocol vendor name" 3011 * see function psmouse_switch_protocol() in psmouse-base.c 3012 */ 3013 dev2->name = "AlpsPS/2 ALPS DualPoint Stick"; 3014 3015 dev2->id.bustype = BUS_I8042; 3016 dev2->id.vendor = 0x0002; 3017 dev2->id.product = PSMOUSE_ALPS; 3018 dev2->id.version = priv->proto_version; 3019 dev2->dev.parent = &psmouse->ps2dev.serio->dev; 3020 3021 input_set_capability(dev2, EV_REL, REL_X); 3022 input_set_capability(dev2, EV_REL, REL_Y); 3023 if (priv->flags & ALPS_DUALPOINT_WITH_PRESSURE) { 3024 input_set_capability(dev2, EV_ABS, ABS_PRESSURE); 3025 input_set_abs_params(dev2, ABS_PRESSURE, 0, 127, 0, 0); 3026 } 3027 input_set_capability(dev2, EV_KEY, BTN_LEFT); 3028 input_set_capability(dev2, EV_KEY, BTN_RIGHT); 3029 input_set_capability(dev2, EV_KEY, BTN_MIDDLE); 3030 3031 __set_bit(INPUT_PROP_POINTER, dev2->propbit); 3032 __set_bit(INPUT_PROP_POINTING_STICK, dev2->propbit); 3033 3034 error = input_register_device(dev2); 3035 if (error) { 3036 psmouse_err(psmouse, 3037 "failed to register trackstick device: %d\n", 3038 error); 3039 input_free_device(dev2); 3040 goto init_fail; 3041 } 3042 3043 priv->dev2 = dev2; 3044 } 3045 3046 priv->psmouse = psmouse; 3047 3048 INIT_DELAYED_WORK(&priv->dev3_register_work, 3049 alps_register_bare_ps2_mouse); 3050 3051 psmouse->protocol_handler = alps_process_byte; 3052 psmouse->poll = alps_poll; 3053 psmouse->disconnect = alps_disconnect; 3054 psmouse->reconnect = alps_reconnect; 3055 psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6; 3056 3057 /* We are having trouble resyncing ALPS touchpads so disable it for now */ 3058 psmouse->resync_time = 0; 3059 3060 /* Allow 2 invalid packets without resetting device */ 3061 psmouse->resetafter = psmouse->pktsize * 2; 3062 3063 return 0; 3064 3065 init_fail: 3066 psmouse_reset(psmouse); 3067 /* 3068 * Even though we did not allocate psmouse->private we do free 3069 * it here. 3070 */ 3071 kfree(psmouse->private); 3072 psmouse->private = NULL; 3073 return error; 3074 } 3075 3076 int alps_detect(struct psmouse *psmouse, bool set_properties) 3077 { 3078 struct alps_data *priv; 3079 int error; 3080 3081 error = alps_identify(psmouse, NULL); 3082 if (error) 3083 return error; 3084 3085 /* 3086 * Reset the device to make sure it is fully operational: 3087 * on some laptops, like certain Dell Latitudes, we may 3088 * fail to properly detect presence of trackstick if device 3089 * has not been reset. 3090 */ 3091 psmouse_reset(psmouse); 3092 3093 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL); 3094 if (!priv) 3095 return -ENOMEM; 3096 3097 error = alps_identify(psmouse, priv); 3098 if (error) { 3099 kfree(priv); 3100 return error; 3101 } 3102 3103 if (set_properties) { 3104 psmouse->vendor = "ALPS"; 3105 psmouse->name = priv->flags & ALPS_DUALPOINT ? 3106 "DualPoint TouchPad" : "GlidePoint"; 3107 psmouse->model = priv->proto_version; 3108 } else { 3109 /* 3110 * Destroy alps_data structure we allocated earlier since 3111 * this was just a "trial run". Otherwise we'll keep it 3112 * to be used by alps_init() which has to be called if 3113 * we succeed and set_properties is true. 3114 */ 3115 kfree(priv); 3116 psmouse->private = NULL; 3117 } 3118 3119 return 0; 3120 } 3121 3122