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 { { 0x73, 0x02, 0x64 }, 0x8a, { ALPS_PROTO_V4, 0x8f, 0x8f, 0 } }, 142 }; 143 144 static const struct alps_protocol_info alps_v3_protocol_data = { 145 ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT 146 }; 147 148 static const struct alps_protocol_info alps_v3_rushmore_data = { 149 ALPS_PROTO_V3_RUSHMORE, 0x8f, 0x8f, ALPS_DUALPOINT 150 }; 151 152 static const struct alps_protocol_info alps_v5_protocol_data = { 153 ALPS_PROTO_V5, 0xc8, 0xd8, 0 154 }; 155 156 static const struct alps_protocol_info alps_v7_protocol_data = { 157 ALPS_PROTO_V7, 0x48, 0x48, ALPS_DUALPOINT 158 }; 159 160 static const struct alps_protocol_info alps_v8_protocol_data = { 161 ALPS_PROTO_V8, 0x18, 0x18, 0 162 }; 163 164 /* 165 * Some v2 models report the stick buttons in separate bits 166 */ 167 static const struct dmi_system_id alps_dmi_has_separate_stick_buttons[] = { 168 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 169 { 170 /* Extrapolated from other entries */ 171 .matches = { 172 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 173 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D420"), 174 }, 175 }, 176 { 177 /* Reported-by: Hans de Bruin <jmdebruin@xmsnet.nl> */ 178 .matches = { 179 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 180 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D430"), 181 }, 182 }, 183 { 184 /* Reported-by: Hans de Goede <hdegoede@redhat.com> */ 185 .matches = { 186 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 187 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D620"), 188 }, 189 }, 190 { 191 /* Extrapolated from other entries */ 192 .matches = { 193 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 194 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D630"), 195 }, 196 }, 197 #endif 198 { } 199 }; 200 201 static void alps_set_abs_params_st(struct alps_data *priv, 202 struct input_dev *dev1); 203 static void alps_set_abs_params_semi_mt(struct alps_data *priv, 204 struct input_dev *dev1); 205 static void alps_set_abs_params_v7(struct alps_data *priv, 206 struct input_dev *dev1); 207 static void alps_set_abs_params_ss4_v2(struct alps_data *priv, 208 struct input_dev *dev1); 209 210 /* Packet formats are described in Documentation/input/alps.txt */ 211 212 static bool alps_is_valid_first_byte(struct alps_data *priv, 213 unsigned char data) 214 { 215 return (data & priv->mask0) == priv->byte0; 216 } 217 218 static void alps_report_buttons(struct input_dev *dev1, struct input_dev *dev2, 219 int left, int right, int middle) 220 { 221 struct input_dev *dev; 222 223 /* 224 * If shared button has already been reported on the 225 * other device (dev2) then this event should be also 226 * sent through that device. 227 */ 228 dev = (dev2 && test_bit(BTN_LEFT, dev2->key)) ? dev2 : dev1; 229 input_report_key(dev, BTN_LEFT, left); 230 231 dev = (dev2 && test_bit(BTN_RIGHT, dev2->key)) ? dev2 : dev1; 232 input_report_key(dev, BTN_RIGHT, right); 233 234 dev = (dev2 && test_bit(BTN_MIDDLE, dev2->key)) ? dev2 : dev1; 235 input_report_key(dev, BTN_MIDDLE, middle); 236 237 /* 238 * Sync the _other_ device now, we'll do the first 239 * device later once we report the rest of the events. 240 */ 241 if (dev2) 242 input_sync(dev2); 243 } 244 245 static void alps_process_packet_v1_v2(struct psmouse *psmouse) 246 { 247 struct alps_data *priv = psmouse->private; 248 unsigned char *packet = psmouse->packet; 249 struct input_dev *dev = psmouse->dev; 250 struct input_dev *dev2 = priv->dev2; 251 int x, y, z, ges, fin, left, right, middle; 252 int back = 0, forward = 0; 253 254 if (priv->proto_version == ALPS_PROTO_V1) { 255 left = packet[2] & 0x10; 256 right = packet[2] & 0x08; 257 middle = 0; 258 x = packet[1] | ((packet[0] & 0x07) << 7); 259 y = packet[4] | ((packet[3] & 0x07) << 7); 260 z = packet[5]; 261 } else { 262 left = packet[3] & 1; 263 right = packet[3] & 2; 264 middle = packet[3] & 4; 265 x = packet[1] | ((packet[2] & 0x78) << (7 - 3)); 266 y = packet[4] | ((packet[3] & 0x70) << (7 - 4)); 267 z = packet[5]; 268 } 269 270 if (priv->flags & ALPS_FW_BK_1) { 271 back = packet[0] & 0x10; 272 forward = packet[2] & 4; 273 } 274 275 if (priv->flags & ALPS_FW_BK_2) { 276 back = packet[3] & 4; 277 forward = packet[2] & 4; 278 if ((middle = forward && back)) 279 forward = back = 0; 280 } 281 282 ges = packet[2] & 1; 283 fin = packet[2] & 2; 284 285 if ((priv->flags & ALPS_DUALPOINT) && z == 127) { 286 input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x)); 287 input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y)); 288 289 alps_report_buttons(dev2, dev, left, right, middle); 290 291 input_sync(dev2); 292 return; 293 } 294 295 /* Some models have separate stick button bits */ 296 if (priv->flags & ALPS_STICK_BITS) { 297 left |= packet[0] & 1; 298 right |= packet[0] & 2; 299 middle |= packet[0] & 4; 300 } 301 302 alps_report_buttons(dev, dev2, left, right, middle); 303 304 /* Convert hardware tap to a reasonable Z value */ 305 if (ges && !fin) 306 z = 40; 307 308 /* 309 * A "tap and drag" operation is reported by the hardware as a transition 310 * from (!fin && ges) to (fin && ges). This should be translated to the 311 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually. 312 */ 313 if (ges && fin && !priv->prev_fin) { 314 input_report_abs(dev, ABS_X, x); 315 input_report_abs(dev, ABS_Y, y); 316 input_report_abs(dev, ABS_PRESSURE, 0); 317 input_report_key(dev, BTN_TOOL_FINGER, 0); 318 input_sync(dev); 319 } 320 priv->prev_fin = fin; 321 322 if (z > 30) 323 input_report_key(dev, BTN_TOUCH, 1); 324 if (z < 25) 325 input_report_key(dev, BTN_TOUCH, 0); 326 327 if (z > 0) { 328 input_report_abs(dev, ABS_X, x); 329 input_report_abs(dev, ABS_Y, y); 330 } 331 332 input_report_abs(dev, ABS_PRESSURE, z); 333 input_report_key(dev, BTN_TOOL_FINGER, z > 0); 334 335 if (priv->flags & ALPS_WHEEL) 336 input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07)); 337 338 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 339 input_report_key(dev, BTN_FORWARD, forward); 340 input_report_key(dev, BTN_BACK, back); 341 } 342 343 if (priv->flags & ALPS_FOUR_BUTTONS) { 344 input_report_key(dev, BTN_0, packet[2] & 4); 345 input_report_key(dev, BTN_1, packet[0] & 0x10); 346 input_report_key(dev, BTN_2, packet[3] & 4); 347 input_report_key(dev, BTN_3, packet[0] & 0x20); 348 } 349 350 input_sync(dev); 351 } 352 353 static void alps_get_bitmap_points(unsigned int map, 354 struct alps_bitmap_point *low, 355 struct alps_bitmap_point *high, 356 int *fingers) 357 { 358 struct alps_bitmap_point *point; 359 int i, bit, prev_bit = 0; 360 361 point = low; 362 for (i = 0; map != 0; i++, map >>= 1) { 363 bit = map & 1; 364 if (bit) { 365 if (!prev_bit) { 366 point->start_bit = i; 367 point->num_bits = 0; 368 (*fingers)++; 369 } 370 point->num_bits++; 371 } else { 372 if (prev_bit) 373 point = high; 374 } 375 prev_bit = bit; 376 } 377 } 378 379 /* 380 * Process bitmap data from semi-mt protocols. Returns the number of 381 * fingers detected. A return value of 0 means at least one of the 382 * bitmaps was empty. 383 * 384 * The bitmaps don't have enough data to track fingers, so this function 385 * only generates points representing a bounding box of all contacts. 386 * These points are returned in fields->mt when the return value 387 * is greater than 0. 388 */ 389 static int alps_process_bitmap(struct alps_data *priv, 390 struct alps_fields *fields) 391 { 392 int i, fingers_x = 0, fingers_y = 0, fingers, closest; 393 struct alps_bitmap_point x_low = {0,}, x_high = {0,}; 394 struct alps_bitmap_point y_low = {0,}, y_high = {0,}; 395 struct input_mt_pos corner[4]; 396 397 if (!fields->x_map || !fields->y_map) 398 return 0; 399 400 alps_get_bitmap_points(fields->x_map, &x_low, &x_high, &fingers_x); 401 alps_get_bitmap_points(fields->y_map, &y_low, &y_high, &fingers_y); 402 403 /* 404 * Fingers can overlap, so we use the maximum count of fingers 405 * on either axis as the finger count. 406 */ 407 fingers = max(fingers_x, fingers_y); 408 409 /* 410 * If an axis reports only a single contact, we have overlapping or 411 * adjacent fingers. Divide the single contact between the two points. 412 */ 413 if (fingers_x == 1) { 414 i = (x_low.num_bits - 1) / 2; 415 x_low.num_bits = x_low.num_bits - i; 416 x_high.start_bit = x_low.start_bit + i; 417 x_high.num_bits = max(i, 1); 418 } 419 if (fingers_y == 1) { 420 i = (y_low.num_bits - 1) / 2; 421 y_low.num_bits = y_low.num_bits - i; 422 y_high.start_bit = y_low.start_bit + i; 423 y_high.num_bits = max(i, 1); 424 } 425 426 /* top-left corner */ 427 corner[0].x = 428 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) / 429 (2 * (priv->x_bits - 1)); 430 corner[0].y = 431 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) / 432 (2 * (priv->y_bits - 1)); 433 434 /* top-right corner */ 435 corner[1].x = 436 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) / 437 (2 * (priv->x_bits - 1)); 438 corner[1].y = 439 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) / 440 (2 * (priv->y_bits - 1)); 441 442 /* bottom-right corner */ 443 corner[2].x = 444 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) / 445 (2 * (priv->x_bits - 1)); 446 corner[2].y = 447 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) / 448 (2 * (priv->y_bits - 1)); 449 450 /* bottom-left corner */ 451 corner[3].x = 452 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) / 453 (2 * (priv->x_bits - 1)); 454 corner[3].y = 455 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) / 456 (2 * (priv->y_bits - 1)); 457 458 /* x-bitmap order is reversed on v5 touchpads */ 459 if (priv->proto_version == ALPS_PROTO_V5) { 460 for (i = 0; i < 4; i++) 461 corner[i].x = priv->x_max - corner[i].x; 462 } 463 464 /* y-bitmap order is reversed on v3 and v4 touchpads */ 465 if (priv->proto_version == ALPS_PROTO_V3 || 466 priv->proto_version == ALPS_PROTO_V4) { 467 for (i = 0; i < 4; i++) 468 corner[i].y = priv->y_max - corner[i].y; 469 } 470 471 /* 472 * We only select a corner for the second touch once per 2 finger 473 * touch sequence to avoid the chosen corner (and thus the coordinates) 474 * jumping around when the first touch is in the middle. 475 */ 476 if (priv->second_touch == -1) { 477 /* Find corner closest to our st coordinates */ 478 closest = 0x7fffffff; 479 for (i = 0; i < 4; i++) { 480 int dx = fields->st.x - corner[i].x; 481 int dy = fields->st.y - corner[i].y; 482 int distance = dx * dx + dy * dy; 483 484 if (distance < closest) { 485 priv->second_touch = i; 486 closest = distance; 487 } 488 } 489 /* And select the opposite corner to use for the 2nd touch */ 490 priv->second_touch = (priv->second_touch + 2) % 4; 491 } 492 493 fields->mt[0] = fields->st; 494 fields->mt[1] = corner[priv->second_touch]; 495 496 return fingers; 497 } 498 499 static void alps_set_slot(struct input_dev *dev, int slot, int x, int y) 500 { 501 input_mt_slot(dev, slot); 502 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); 503 input_report_abs(dev, ABS_MT_POSITION_X, x); 504 input_report_abs(dev, ABS_MT_POSITION_Y, y); 505 } 506 507 static void alps_report_mt_data(struct psmouse *psmouse, int n) 508 { 509 struct alps_data *priv = psmouse->private; 510 struct input_dev *dev = psmouse->dev; 511 struct alps_fields *f = &priv->f; 512 int i, slot[MAX_TOUCHES]; 513 514 input_mt_assign_slots(dev, slot, f->mt, n, 0); 515 for (i = 0; i < n; i++) 516 alps_set_slot(dev, slot[i], f->mt[i].x, f->mt[i].y); 517 518 input_mt_sync_frame(dev); 519 } 520 521 static void alps_report_semi_mt_data(struct psmouse *psmouse, int fingers) 522 { 523 struct alps_data *priv = psmouse->private; 524 struct input_dev *dev = psmouse->dev; 525 struct alps_fields *f = &priv->f; 526 527 /* Use st data when we don't have mt data */ 528 if (fingers < 2) { 529 f->mt[0].x = f->st.x; 530 f->mt[0].y = f->st.y; 531 fingers = f->pressure > 0 ? 1 : 0; 532 priv->second_touch = -1; 533 } 534 535 if (fingers >= 1) 536 alps_set_slot(dev, 0, f->mt[0].x, f->mt[0].y); 537 if (fingers >= 2) 538 alps_set_slot(dev, 1, f->mt[1].x, f->mt[1].y); 539 input_mt_sync_frame(dev); 540 541 input_mt_report_finger_count(dev, fingers); 542 543 input_report_key(dev, BTN_LEFT, f->left); 544 input_report_key(dev, BTN_RIGHT, f->right); 545 input_report_key(dev, BTN_MIDDLE, f->middle); 546 547 input_report_abs(dev, ABS_PRESSURE, f->pressure); 548 549 input_sync(dev); 550 } 551 552 static void alps_process_trackstick_packet_v3(struct psmouse *psmouse) 553 { 554 struct alps_data *priv = psmouse->private; 555 unsigned char *packet = psmouse->packet; 556 struct input_dev *dev = priv->dev2; 557 int x, y, z, left, right, middle; 558 559 /* It should be a DualPoint when received trackstick packet */ 560 if (!(priv->flags & ALPS_DUALPOINT)) { 561 psmouse_warn(psmouse, 562 "Rejected trackstick packet from non DualPoint device"); 563 return; 564 } 565 566 /* Sanity check packet */ 567 if (!(packet[0] & 0x40)) { 568 psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n"); 569 return; 570 } 571 572 /* 573 * There's a special packet that seems to indicate the end 574 * of a stream of trackstick data. Filter these out. 575 */ 576 if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f) 577 return; 578 579 x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f)); 580 y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f)); 581 z = (packet[4] & 0x7c) >> 2; 582 583 /* 584 * The x and y values tend to be quite large, and when used 585 * alone the trackstick is difficult to use. Scale them down 586 * to compensate. 587 */ 588 x /= 8; 589 y /= 8; 590 591 input_report_rel(dev, REL_X, x); 592 input_report_rel(dev, REL_Y, -y); 593 594 /* 595 * Most ALPS models report the trackstick buttons in the touchpad 596 * packets, but a few report them here. No reliable way has been 597 * found to differentiate between the models upfront, so we enable 598 * the quirk in response to seeing a button press in the trackstick 599 * packet. 600 */ 601 left = packet[3] & 0x01; 602 right = packet[3] & 0x02; 603 middle = packet[3] & 0x04; 604 605 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) && 606 (left || right || middle)) 607 priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS; 608 609 if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) { 610 input_report_key(dev, BTN_LEFT, left); 611 input_report_key(dev, BTN_RIGHT, right); 612 input_report_key(dev, BTN_MIDDLE, middle); 613 } 614 615 input_sync(dev); 616 return; 617 } 618 619 static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p) 620 { 621 f->left = !!(p[3] & 0x01); 622 f->right = !!(p[3] & 0x02); 623 f->middle = !!(p[3] & 0x04); 624 625 f->ts_left = !!(p[3] & 0x10); 626 f->ts_right = !!(p[3] & 0x20); 627 f->ts_middle = !!(p[3] & 0x40); 628 } 629 630 static int alps_decode_pinnacle(struct alps_fields *f, unsigned char *p, 631 struct psmouse *psmouse) 632 { 633 f->first_mp = !!(p[4] & 0x40); 634 f->is_mp = !!(p[0] & 0x40); 635 636 if (f->is_mp) { 637 f->fingers = (p[5] & 0x3) + 1; 638 f->x_map = ((p[4] & 0x7e) << 8) | 639 ((p[1] & 0x7f) << 2) | 640 ((p[0] & 0x30) >> 4); 641 f->y_map = ((p[3] & 0x70) << 4) | 642 ((p[2] & 0x7f) << 1) | 643 (p[4] & 0x01); 644 } else { 645 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | 646 ((p[0] & 0x30) >> 4); 647 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); 648 f->pressure = p[5] & 0x7f; 649 650 alps_decode_buttons_v3(f, p); 651 } 652 653 return 0; 654 } 655 656 static int alps_decode_rushmore(struct alps_fields *f, unsigned char *p, 657 struct psmouse *psmouse) 658 { 659 f->first_mp = !!(p[4] & 0x40); 660 f->is_mp = !!(p[5] & 0x40); 661 662 if (f->is_mp) { 663 f->fingers = max((p[5] & 0x3), ((p[5] >> 2) & 0x3)) + 1; 664 f->x_map = ((p[5] & 0x10) << 11) | 665 ((p[4] & 0x7e) << 8) | 666 ((p[1] & 0x7f) << 2) | 667 ((p[0] & 0x30) >> 4); 668 f->y_map = ((p[5] & 0x20) << 6) | 669 ((p[3] & 0x70) << 4) | 670 ((p[2] & 0x7f) << 1) | 671 (p[4] & 0x01); 672 } else { 673 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | 674 ((p[0] & 0x30) >> 4); 675 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); 676 f->pressure = p[5] & 0x7f; 677 678 alps_decode_buttons_v3(f, p); 679 } 680 681 return 0; 682 } 683 684 static int alps_decode_dolphin(struct alps_fields *f, unsigned char *p, 685 struct psmouse *psmouse) 686 { 687 u64 palm_data = 0; 688 struct alps_data *priv = psmouse->private; 689 690 f->first_mp = !!(p[0] & 0x02); 691 f->is_mp = !!(p[0] & 0x20); 692 693 if (!f->is_mp) { 694 f->st.x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7)); 695 f->st.y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3)); 696 f->pressure = (p[0] & 4) ? 0 : p[5] & 0x7f; 697 alps_decode_buttons_v3(f, p); 698 } else { 699 f->fingers = ((p[0] & 0x6) >> 1 | 700 (p[0] & 0x10) >> 2); 701 702 palm_data = (p[1] & 0x7f) | 703 ((p[2] & 0x7f) << 7) | 704 ((p[4] & 0x7f) << 14) | 705 ((p[5] & 0x7f) << 21) | 706 ((p[3] & 0x07) << 28) | 707 (((u64)p[3] & 0x70) << 27) | 708 (((u64)p[0] & 0x01) << 34); 709 710 /* Y-profile is stored in P(0) to p(n-1), n = y_bits; */ 711 f->y_map = palm_data & (BIT(priv->y_bits) - 1); 712 713 /* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */ 714 f->x_map = (palm_data >> priv->y_bits) & 715 (BIT(priv->x_bits) - 1); 716 } 717 718 return 0; 719 } 720 721 static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse) 722 { 723 struct alps_data *priv = psmouse->private; 724 unsigned char *packet = psmouse->packet; 725 struct input_dev *dev2 = priv->dev2; 726 struct alps_fields *f = &priv->f; 727 int fingers = 0; 728 729 memset(f, 0, sizeof(*f)); 730 731 priv->decode_fields(f, packet, psmouse); 732 733 /* 734 * There's no single feature of touchpad position and bitmap packets 735 * that can be used to distinguish between them. We rely on the fact 736 * that a bitmap packet should always follow a position packet with 737 * bit 6 of packet[4] set. 738 */ 739 if (priv->multi_packet) { 740 /* 741 * Sometimes a position packet will indicate a multi-packet 742 * sequence, but then what follows is another position 743 * packet. Check for this, and when it happens process the 744 * position packet as usual. 745 */ 746 if (f->is_mp) { 747 fingers = f->fingers; 748 /* 749 * Bitmap processing uses position packet's coordinate 750 * data, so we need to do decode it first. 751 */ 752 priv->decode_fields(f, priv->multi_data, psmouse); 753 if (alps_process_bitmap(priv, f) == 0) 754 fingers = 0; /* Use st data */ 755 } else { 756 priv->multi_packet = 0; 757 } 758 } 759 760 /* 761 * Bit 6 of byte 0 is not usually set in position packets. The only 762 * times it seems to be set is in situations where the data is 763 * suspect anyway, e.g. a palm resting flat on the touchpad. Given 764 * this combined with the fact that this bit is useful for filtering 765 * out misidentified bitmap packets, we reject anything with this 766 * bit set. 767 */ 768 if (f->is_mp) 769 return; 770 771 if (!priv->multi_packet && f->first_mp) { 772 priv->multi_packet = 1; 773 memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); 774 return; 775 } 776 777 priv->multi_packet = 0; 778 779 /* 780 * Sometimes the hardware sends a single packet with z = 0 781 * in the middle of a stream. Real releases generate packets 782 * with x, y, and z all zero, so these seem to be flukes. 783 * Ignore them. 784 */ 785 if (f->st.x && f->st.y && !f->pressure) 786 return; 787 788 alps_report_semi_mt_data(psmouse, fingers); 789 790 if ((priv->flags & ALPS_DUALPOINT) && 791 !(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) { 792 input_report_key(dev2, BTN_LEFT, f->ts_left); 793 input_report_key(dev2, BTN_RIGHT, f->ts_right); 794 input_report_key(dev2, BTN_MIDDLE, f->ts_middle); 795 input_sync(dev2); 796 } 797 } 798 799 static void alps_process_packet_v3(struct psmouse *psmouse) 800 { 801 unsigned char *packet = psmouse->packet; 802 803 /* 804 * v3 protocol packets come in three types, two representing 805 * touchpad data and one representing trackstick data. 806 * Trackstick packets seem to be distinguished by always 807 * having 0x3f in the last byte. This value has never been 808 * observed in the last byte of either of the other types 809 * of packets. 810 */ 811 if (packet[5] == 0x3f) { 812 alps_process_trackstick_packet_v3(psmouse); 813 return; 814 } 815 816 alps_process_touchpad_packet_v3_v5(psmouse); 817 } 818 819 static void alps_process_packet_v6(struct psmouse *psmouse) 820 { 821 struct alps_data *priv = psmouse->private; 822 unsigned char *packet = psmouse->packet; 823 struct input_dev *dev = psmouse->dev; 824 struct input_dev *dev2 = priv->dev2; 825 int x, y, z, left, right, middle; 826 827 /* 828 * We can use Byte5 to distinguish if the packet is from Touchpad 829 * or Trackpoint. 830 * Touchpad: 0 - 0x7E 831 * Trackpoint: 0x7F 832 */ 833 if (packet[5] == 0x7F) { 834 /* It should be a DualPoint when received Trackpoint packet */ 835 if (!(priv->flags & ALPS_DUALPOINT)) { 836 psmouse_warn(psmouse, 837 "Rejected trackstick packet from non DualPoint device"); 838 return; 839 } 840 841 /* Trackpoint packet */ 842 x = packet[1] | ((packet[3] & 0x20) << 2); 843 y = packet[2] | ((packet[3] & 0x40) << 1); 844 z = packet[4]; 845 left = packet[3] & 0x01; 846 right = packet[3] & 0x02; 847 middle = packet[3] & 0x04; 848 849 /* To prevent the cursor jump when finger lifted */ 850 if (x == 0x7F && y == 0x7F && z == 0x7F) 851 x = y = z = 0; 852 853 /* Divide 4 since trackpoint's speed is too fast */ 854 input_report_rel(dev2, REL_X, (char)x / 4); 855 input_report_rel(dev2, REL_Y, -((char)y / 4)); 856 857 input_report_key(dev2, BTN_LEFT, left); 858 input_report_key(dev2, BTN_RIGHT, right); 859 input_report_key(dev2, BTN_MIDDLE, middle); 860 861 input_sync(dev2); 862 return; 863 } 864 865 /* Touchpad packet */ 866 x = packet[1] | ((packet[3] & 0x78) << 4); 867 y = packet[2] | ((packet[4] & 0x78) << 4); 868 z = packet[5]; 869 left = packet[3] & 0x01; 870 right = packet[3] & 0x02; 871 872 if (z > 30) 873 input_report_key(dev, BTN_TOUCH, 1); 874 if (z < 25) 875 input_report_key(dev, BTN_TOUCH, 0); 876 877 if (z > 0) { 878 input_report_abs(dev, ABS_X, x); 879 input_report_abs(dev, ABS_Y, y); 880 } 881 882 input_report_abs(dev, ABS_PRESSURE, z); 883 input_report_key(dev, BTN_TOOL_FINGER, z > 0); 884 885 /* v6 touchpad does not have middle button */ 886 input_report_key(dev, BTN_LEFT, left); 887 input_report_key(dev, BTN_RIGHT, right); 888 889 input_sync(dev); 890 } 891 892 static void alps_process_packet_v4(struct psmouse *psmouse) 893 { 894 struct alps_data *priv = psmouse->private; 895 unsigned char *packet = psmouse->packet; 896 struct alps_fields *f = &priv->f; 897 int offset; 898 899 /* 900 * v4 has a 6-byte encoding for bitmap data, but this data is 901 * broken up between 3 normal packets. Use priv->multi_packet to 902 * track our position in the bitmap packet. 903 */ 904 if (packet[6] & 0x40) { 905 /* sync, reset position */ 906 priv->multi_packet = 0; 907 } 908 909 if (WARN_ON_ONCE(priv->multi_packet > 2)) 910 return; 911 912 offset = 2 * priv->multi_packet; 913 priv->multi_data[offset] = packet[6]; 914 priv->multi_data[offset + 1] = packet[7]; 915 916 f->left = !!(packet[4] & 0x01); 917 f->right = !!(packet[4] & 0x02); 918 919 f->st.x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) | 920 ((packet[0] & 0x30) >> 4); 921 f->st.y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f); 922 f->pressure = packet[5] & 0x7f; 923 924 if (++priv->multi_packet > 2) { 925 priv->multi_packet = 0; 926 927 f->x_map = ((priv->multi_data[2] & 0x1f) << 10) | 928 ((priv->multi_data[3] & 0x60) << 3) | 929 ((priv->multi_data[0] & 0x3f) << 2) | 930 ((priv->multi_data[1] & 0x60) >> 5); 931 f->y_map = ((priv->multi_data[5] & 0x01) << 10) | 932 ((priv->multi_data[3] & 0x1f) << 5) | 933 (priv->multi_data[1] & 0x1f); 934 935 f->fingers = alps_process_bitmap(priv, f); 936 } 937 938 alps_report_semi_mt_data(psmouse, f->fingers); 939 } 940 941 static bool alps_is_valid_package_v7(struct psmouse *psmouse) 942 { 943 switch (psmouse->pktcnt) { 944 case 3: 945 return (psmouse->packet[2] & 0x40) == 0x40; 946 case 4: 947 return (psmouse->packet[3] & 0x48) == 0x48; 948 case 6: 949 return (psmouse->packet[5] & 0x40) == 0x00; 950 } 951 return true; 952 } 953 954 static unsigned char alps_get_packet_id_v7(char *byte) 955 { 956 unsigned char packet_id; 957 958 if (byte[4] & 0x40) 959 packet_id = V7_PACKET_ID_TWO; 960 else if (byte[4] & 0x01) 961 packet_id = V7_PACKET_ID_MULTI; 962 else if ((byte[0] & 0x10) && !(byte[4] & 0x43)) 963 packet_id = V7_PACKET_ID_NEW; 964 else if (byte[1] == 0x00 && byte[4] == 0x00) 965 packet_id = V7_PACKET_ID_IDLE; 966 else 967 packet_id = V7_PACKET_ID_UNKNOWN; 968 969 return packet_id; 970 } 971 972 static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt, 973 unsigned char *pkt, 974 unsigned char pkt_id) 975 { 976 mt[0].x = ((pkt[2] & 0x80) << 4); 977 mt[0].x |= ((pkt[2] & 0x3F) << 5); 978 mt[0].x |= ((pkt[3] & 0x30) >> 1); 979 mt[0].x |= (pkt[3] & 0x07); 980 mt[0].y = (pkt[1] << 3) | (pkt[0] & 0x07); 981 982 mt[1].x = ((pkt[3] & 0x80) << 4); 983 mt[1].x |= ((pkt[4] & 0x80) << 3); 984 mt[1].x |= ((pkt[4] & 0x3F) << 4); 985 mt[1].y = ((pkt[5] & 0x80) << 3); 986 mt[1].y |= ((pkt[5] & 0x3F) << 4); 987 988 switch (pkt_id) { 989 case V7_PACKET_ID_TWO: 990 mt[1].x &= ~0x000F; 991 mt[1].y |= 0x000F; 992 /* Detect false-postive touches where x & y report max value */ 993 if (mt[1].y == 0x7ff && mt[1].x == 0xff0) { 994 mt[1].x = 0; 995 /* y gets set to 0 at the end of this function */ 996 } 997 break; 998 999 case V7_PACKET_ID_MULTI: 1000 mt[1].x &= ~0x003F; 1001 mt[1].y &= ~0x0020; 1002 mt[1].y |= ((pkt[4] & 0x02) << 4); 1003 mt[1].y |= 0x001F; 1004 break; 1005 1006 case V7_PACKET_ID_NEW: 1007 mt[1].x &= ~0x003F; 1008 mt[1].x |= (pkt[0] & 0x20); 1009 mt[1].y |= 0x000F; 1010 break; 1011 } 1012 1013 mt[0].y = 0x7FF - mt[0].y; 1014 mt[1].y = 0x7FF - mt[1].y; 1015 } 1016 1017 static int alps_get_mt_count(struct input_mt_pos *mt) 1018 { 1019 int i, fingers = 0; 1020 1021 for (i = 0; i < MAX_TOUCHES; i++) { 1022 if (mt[i].x != 0 || mt[i].y != 0) 1023 fingers++; 1024 } 1025 1026 return fingers; 1027 } 1028 1029 static int alps_decode_packet_v7(struct alps_fields *f, 1030 unsigned char *p, 1031 struct psmouse *psmouse) 1032 { 1033 struct alps_data *priv = psmouse->private; 1034 unsigned char pkt_id; 1035 1036 pkt_id = alps_get_packet_id_v7(p); 1037 if (pkt_id == V7_PACKET_ID_IDLE) 1038 return 0; 1039 if (pkt_id == V7_PACKET_ID_UNKNOWN) 1040 return -1; 1041 /* 1042 * NEW packets are send to indicate a discontinuity in the finger 1043 * coordinate reporting. Specifically a finger may have moved from 1044 * slot 0 to 1 or vice versa. INPUT_MT_TRACK takes care of this for 1045 * us. 1046 * 1047 * NEW packets have 3 problems: 1048 * 1) They do not contain middle / right button info (on non clickpads) 1049 * this can be worked around by preserving the old button state 1050 * 2) They do not contain an accurate fingercount, and they are 1051 * typically send when the number of fingers changes. We cannot use 1052 * the old finger count as that may mismatch with the amount of 1053 * touch coordinates we've available in the NEW packet 1054 * 3) Their x data for the second touch is inaccurate leading to 1055 * a possible jump of the x coordinate by 16 units when the first 1056 * non NEW packet comes in 1057 * Since problems 2 & 3 cannot be worked around, just ignore them. 1058 */ 1059 if (pkt_id == V7_PACKET_ID_NEW) 1060 return 1; 1061 1062 alps_get_finger_coordinate_v7(f->mt, p, pkt_id); 1063 1064 if (pkt_id == V7_PACKET_ID_TWO) 1065 f->fingers = alps_get_mt_count(f->mt); 1066 else /* pkt_id == V7_PACKET_ID_MULTI */ 1067 f->fingers = 3 + (p[5] & 0x03); 1068 1069 f->left = (p[0] & 0x80) >> 7; 1070 if (priv->flags & ALPS_BUTTONPAD) { 1071 if (p[0] & 0x20) 1072 f->fingers++; 1073 if (p[0] & 0x10) 1074 f->fingers++; 1075 } else { 1076 f->right = (p[0] & 0x20) >> 5; 1077 f->middle = (p[0] & 0x10) >> 4; 1078 } 1079 1080 /* Sometimes a single touch is reported in mt[1] rather then mt[0] */ 1081 if (f->fingers == 1 && f->mt[0].x == 0 && f->mt[0].y == 0) { 1082 f->mt[0].x = f->mt[1].x; 1083 f->mt[0].y = f->mt[1].y; 1084 f->mt[1].x = 0; 1085 f->mt[1].y = 0; 1086 } 1087 1088 return 0; 1089 } 1090 1091 static void alps_process_trackstick_packet_v7(struct psmouse *psmouse) 1092 { 1093 struct alps_data *priv = psmouse->private; 1094 unsigned char *packet = psmouse->packet; 1095 struct input_dev *dev2 = priv->dev2; 1096 int x, y, z, left, right, middle; 1097 1098 /* It should be a DualPoint when received trackstick packet */ 1099 if (!(priv->flags & ALPS_DUALPOINT)) { 1100 psmouse_warn(psmouse, 1101 "Rejected trackstick packet from non DualPoint device"); 1102 return; 1103 } 1104 1105 x = ((packet[2] & 0xbf)) | ((packet[3] & 0x10) << 2); 1106 y = (packet[3] & 0x07) | (packet[4] & 0xb8) | 1107 ((packet[3] & 0x20) << 1); 1108 z = (packet[5] & 0x3f) | ((packet[3] & 0x80) >> 1); 1109 1110 left = (packet[1] & 0x01); 1111 right = (packet[1] & 0x02) >> 1; 1112 middle = (packet[1] & 0x04) >> 2; 1113 1114 input_report_rel(dev2, REL_X, (char)x); 1115 input_report_rel(dev2, REL_Y, -((char)y)); 1116 1117 input_report_key(dev2, BTN_LEFT, left); 1118 input_report_key(dev2, BTN_RIGHT, right); 1119 input_report_key(dev2, BTN_MIDDLE, middle); 1120 1121 input_sync(dev2); 1122 } 1123 1124 static void alps_process_touchpad_packet_v7(struct psmouse *psmouse) 1125 { 1126 struct alps_data *priv = psmouse->private; 1127 struct input_dev *dev = psmouse->dev; 1128 struct alps_fields *f = &priv->f; 1129 1130 memset(f, 0, sizeof(*f)); 1131 1132 if (priv->decode_fields(f, psmouse->packet, psmouse)) 1133 return; 1134 1135 alps_report_mt_data(psmouse, alps_get_mt_count(f->mt)); 1136 1137 input_mt_report_finger_count(dev, f->fingers); 1138 1139 input_report_key(dev, BTN_LEFT, f->left); 1140 input_report_key(dev, BTN_RIGHT, f->right); 1141 input_report_key(dev, BTN_MIDDLE, f->middle); 1142 1143 input_sync(dev); 1144 } 1145 1146 static void alps_process_packet_v7(struct psmouse *psmouse) 1147 { 1148 unsigned char *packet = psmouse->packet; 1149 1150 if (packet[0] == 0x48 && (packet[4] & 0x47) == 0x06) 1151 alps_process_trackstick_packet_v7(psmouse); 1152 else 1153 alps_process_touchpad_packet_v7(psmouse); 1154 } 1155 1156 static enum SS4_PACKET_ID alps_get_pkt_id_ss4_v2(unsigned char *byte) 1157 { 1158 enum SS4_PACKET_ID pkt_id = SS4_PACKET_ID_IDLE; 1159 1160 switch (byte[3] & 0x30) { 1161 case 0x00: 1162 if (SS4_IS_IDLE_V2(byte)) { 1163 pkt_id = SS4_PACKET_ID_IDLE; 1164 } else { 1165 pkt_id = SS4_PACKET_ID_ONE; 1166 } 1167 break; 1168 case 0x10: 1169 /* two-finger finger positions */ 1170 pkt_id = SS4_PACKET_ID_TWO; 1171 break; 1172 case 0x20: 1173 /* stick pointer */ 1174 pkt_id = SS4_PACKET_ID_STICK; 1175 break; 1176 case 0x30: 1177 /* third and fourth finger positions */ 1178 pkt_id = SS4_PACKET_ID_MULTI; 1179 break; 1180 } 1181 1182 return pkt_id; 1183 } 1184 1185 static int alps_decode_ss4_v2(struct alps_fields *f, 1186 unsigned char *p, struct psmouse *psmouse) 1187 { 1188 struct alps_data *priv = psmouse->private; 1189 enum SS4_PACKET_ID pkt_id; 1190 unsigned int no_data_x, no_data_y; 1191 1192 pkt_id = alps_get_pkt_id_ss4_v2(p); 1193 1194 /* Current packet is 1Finger coordinate packet */ 1195 switch (pkt_id) { 1196 case SS4_PACKET_ID_ONE: 1197 f->mt[0].x = SS4_1F_X_V2(p); 1198 f->mt[0].y = SS4_1F_Y_V2(p); 1199 f->pressure = ((SS4_1F_Z_V2(p)) * 2) & 0x7f; 1200 /* 1201 * When a button is held the device will give us events 1202 * with x, y, and pressure of 0. This causes annoying jumps 1203 * if a touch is released while the button is held. 1204 * Handle this by claiming zero contacts. 1205 */ 1206 f->fingers = f->pressure > 0 ? 1 : 0; 1207 f->first_mp = 0; 1208 f->is_mp = 0; 1209 break; 1210 1211 case SS4_PACKET_ID_TWO: 1212 if (priv->flags & ALPS_BUTTONPAD) { 1213 f->mt[0].x = SS4_BTL_MF_X_V2(p, 0); 1214 f->mt[0].y = SS4_BTL_MF_Y_V2(p, 0); 1215 f->mt[1].x = SS4_BTL_MF_X_V2(p, 1); 1216 f->mt[1].y = SS4_BTL_MF_Y_V2(p, 1); 1217 } else { 1218 f->mt[0].x = SS4_STD_MF_X_V2(p, 0); 1219 f->mt[0].y = SS4_STD_MF_Y_V2(p, 0); 1220 f->mt[1].x = SS4_STD_MF_X_V2(p, 1); 1221 f->mt[1].y = SS4_STD_MF_Y_V2(p, 1); 1222 } 1223 f->pressure = SS4_MF_Z_V2(p, 0) ? 0x30 : 0; 1224 1225 if (SS4_IS_MF_CONTINUE(p)) { 1226 f->first_mp = 1; 1227 } else { 1228 f->fingers = 2; 1229 f->first_mp = 0; 1230 } 1231 f->is_mp = 0; 1232 1233 break; 1234 1235 case SS4_PACKET_ID_MULTI: 1236 if (priv->flags & ALPS_BUTTONPAD) { 1237 f->mt[2].x = SS4_BTL_MF_X_V2(p, 0); 1238 f->mt[2].y = SS4_BTL_MF_Y_V2(p, 0); 1239 f->mt[3].x = SS4_BTL_MF_X_V2(p, 1); 1240 f->mt[3].y = SS4_BTL_MF_Y_V2(p, 1); 1241 no_data_x = SS4_MFPACKET_NO_AX_BL; 1242 no_data_y = SS4_MFPACKET_NO_AY_BL; 1243 } else { 1244 f->mt[2].x = SS4_STD_MF_X_V2(p, 0); 1245 f->mt[2].y = SS4_STD_MF_Y_V2(p, 0); 1246 f->mt[3].x = SS4_STD_MF_X_V2(p, 1); 1247 f->mt[3].y = SS4_STD_MF_Y_V2(p, 1); 1248 no_data_x = SS4_MFPACKET_NO_AX; 1249 no_data_y = SS4_MFPACKET_NO_AY; 1250 } 1251 1252 f->first_mp = 0; 1253 f->is_mp = 1; 1254 1255 if (SS4_IS_5F_DETECTED(p)) { 1256 f->fingers = 5; 1257 } else if (f->mt[3].x == no_data_x && 1258 f->mt[3].y == no_data_y) { 1259 f->mt[3].x = 0; 1260 f->mt[3].y = 0; 1261 f->fingers = 3; 1262 } else { 1263 f->fingers = 4; 1264 } 1265 break; 1266 1267 case SS4_PACKET_ID_STICK: 1268 /* 1269 * x, y, and pressure are decoded in 1270 * alps_process_packet_ss4_v2() 1271 */ 1272 f->first_mp = 0; 1273 f->is_mp = 0; 1274 break; 1275 1276 case SS4_PACKET_ID_IDLE: 1277 default: 1278 memset(f, 0, sizeof(struct alps_fields)); 1279 break; 1280 } 1281 1282 /* handle buttons */ 1283 if (pkt_id == SS4_PACKET_ID_STICK) { 1284 f->ts_left = !!(SS4_BTN_V2(p) & 0x01); 1285 if (!(priv->flags & ALPS_BUTTONPAD)) { 1286 f->ts_right = !!(SS4_BTN_V2(p) & 0x02); 1287 f->ts_middle = !!(SS4_BTN_V2(p) & 0x04); 1288 } 1289 } else { 1290 f->left = !!(SS4_BTN_V2(p) & 0x01); 1291 if (!(priv->flags & ALPS_BUTTONPAD)) { 1292 f->right = !!(SS4_BTN_V2(p) & 0x02); 1293 f->middle = !!(SS4_BTN_V2(p) & 0x04); 1294 } 1295 } 1296 1297 return 0; 1298 } 1299 1300 static void alps_process_packet_ss4_v2(struct psmouse *psmouse) 1301 { 1302 struct alps_data *priv = psmouse->private; 1303 unsigned char *packet = psmouse->packet; 1304 struct input_dev *dev = psmouse->dev; 1305 struct input_dev *dev2 = priv->dev2; 1306 struct alps_fields *f = &priv->f; 1307 1308 memset(f, 0, sizeof(struct alps_fields)); 1309 priv->decode_fields(f, packet, psmouse); 1310 if (priv->multi_packet) { 1311 /* 1312 * Sometimes the first packet will indicate a multi-packet 1313 * sequence, but sometimes the next multi-packet would not 1314 * come. Check for this, and when it happens process the 1315 * position packet as usual. 1316 */ 1317 if (f->is_mp) { 1318 /* Now process the 1st packet */ 1319 priv->decode_fields(f, priv->multi_data, psmouse); 1320 } else { 1321 priv->multi_packet = 0; 1322 } 1323 } 1324 1325 /* 1326 * "f.is_mp" would always be '0' after merging the 1st and 2nd packet. 1327 * When it is set, it means 2nd packet comes without 1st packet come. 1328 */ 1329 if (f->is_mp) 1330 return; 1331 1332 /* Save the first packet */ 1333 if (!priv->multi_packet && f->first_mp) { 1334 priv->multi_packet = 1; 1335 memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); 1336 return; 1337 } 1338 1339 priv->multi_packet = 0; 1340 1341 /* Report trackstick */ 1342 if (alps_get_pkt_id_ss4_v2(packet) == SS4_PACKET_ID_STICK) { 1343 if (!(priv->flags & ALPS_DUALPOINT)) { 1344 psmouse_warn(psmouse, 1345 "Rejected trackstick packet from non DualPoint device"); 1346 return; 1347 } 1348 1349 input_report_rel(dev2, REL_X, SS4_TS_X_V2(packet)); 1350 input_report_rel(dev2, REL_Y, SS4_TS_Y_V2(packet)); 1351 input_report_abs(dev2, ABS_PRESSURE, SS4_TS_Z_V2(packet)); 1352 1353 input_report_key(dev2, BTN_LEFT, f->ts_left); 1354 input_report_key(dev2, BTN_RIGHT, f->ts_right); 1355 input_report_key(dev2, BTN_MIDDLE, f->ts_middle); 1356 1357 input_sync(dev2); 1358 return; 1359 } 1360 1361 /* Report touchpad */ 1362 alps_report_mt_data(psmouse, (f->fingers <= 4) ? f->fingers : 4); 1363 1364 input_mt_report_finger_count(dev, f->fingers); 1365 1366 input_report_key(dev, BTN_LEFT, f->left); 1367 input_report_key(dev, BTN_RIGHT, f->right); 1368 input_report_key(dev, BTN_MIDDLE, f->middle); 1369 1370 input_report_abs(dev, ABS_PRESSURE, f->pressure); 1371 input_sync(dev); 1372 } 1373 1374 static bool alps_is_valid_package_ss4_v2(struct psmouse *psmouse) 1375 { 1376 if (psmouse->pktcnt == 4 && ((psmouse->packet[3] & 0x08) != 0x08)) 1377 return false; 1378 if (psmouse->pktcnt == 6 && ((psmouse->packet[5] & 0x10) != 0x0)) 1379 return false; 1380 return true; 1381 } 1382 1383 static DEFINE_MUTEX(alps_mutex); 1384 1385 static void alps_register_bare_ps2_mouse(struct work_struct *work) 1386 { 1387 struct alps_data *priv = 1388 container_of(work, struct alps_data, dev3_register_work.work); 1389 struct psmouse *psmouse = priv->psmouse; 1390 struct input_dev *dev3; 1391 int error = 0; 1392 1393 mutex_lock(&alps_mutex); 1394 1395 if (priv->dev3) 1396 goto out; 1397 1398 dev3 = input_allocate_device(); 1399 if (!dev3) { 1400 psmouse_err(psmouse, "failed to allocate secondary device\n"); 1401 error = -ENOMEM; 1402 goto out; 1403 } 1404 1405 snprintf(priv->phys3, sizeof(priv->phys3), "%s/%s", 1406 psmouse->ps2dev.serio->phys, 1407 (priv->dev2 ? "input2" : "input1")); 1408 dev3->phys = priv->phys3; 1409 1410 /* 1411 * format of input device name is: "protocol vendor name" 1412 * see function psmouse_switch_protocol() in psmouse-base.c 1413 */ 1414 dev3->name = "PS/2 ALPS Mouse"; 1415 1416 dev3->id.bustype = BUS_I8042; 1417 dev3->id.vendor = 0x0002; 1418 dev3->id.product = PSMOUSE_PS2; 1419 dev3->id.version = 0x0000; 1420 dev3->dev.parent = &psmouse->ps2dev.serio->dev; 1421 1422 input_set_capability(dev3, EV_REL, REL_X); 1423 input_set_capability(dev3, EV_REL, REL_Y); 1424 input_set_capability(dev3, EV_KEY, BTN_LEFT); 1425 input_set_capability(dev3, EV_KEY, BTN_RIGHT); 1426 input_set_capability(dev3, EV_KEY, BTN_MIDDLE); 1427 1428 __set_bit(INPUT_PROP_POINTER, dev3->propbit); 1429 1430 error = input_register_device(dev3); 1431 if (error) { 1432 psmouse_err(psmouse, 1433 "failed to register secondary device: %d\n", 1434 error); 1435 input_free_device(dev3); 1436 goto out; 1437 } 1438 1439 priv->dev3 = dev3; 1440 1441 out: 1442 /* 1443 * Save the error code so that we can detect that we 1444 * already tried to create the device. 1445 */ 1446 if (error) 1447 priv->dev3 = ERR_PTR(error); 1448 1449 mutex_unlock(&alps_mutex); 1450 } 1451 1452 static void alps_report_bare_ps2_packet(struct psmouse *psmouse, 1453 unsigned char packet[], 1454 bool report_buttons) 1455 { 1456 struct alps_data *priv = psmouse->private; 1457 struct input_dev *dev, *dev2 = NULL; 1458 1459 /* Figure out which device to use to report the bare packet */ 1460 if (priv->proto_version == ALPS_PROTO_V2 && 1461 (priv->flags & ALPS_DUALPOINT)) { 1462 /* On V2 devices the DualPoint Stick reports bare packets */ 1463 dev = priv->dev2; 1464 dev2 = psmouse->dev; 1465 } else if (unlikely(IS_ERR_OR_NULL(priv->dev3))) { 1466 /* Register dev3 mouse if we received PS/2 packet first time */ 1467 if (!IS_ERR(priv->dev3)) 1468 psmouse_queue_work(psmouse, &priv->dev3_register_work, 1469 0); 1470 return; 1471 } else { 1472 dev = priv->dev3; 1473 } 1474 1475 if (report_buttons) 1476 alps_report_buttons(dev, dev2, 1477 packet[0] & 1, packet[0] & 2, packet[0] & 4); 1478 1479 input_report_rel(dev, REL_X, 1480 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0); 1481 input_report_rel(dev, REL_Y, 1482 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0); 1483 1484 input_sync(dev); 1485 } 1486 1487 static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse) 1488 { 1489 struct alps_data *priv = psmouse->private; 1490 1491 if (psmouse->pktcnt < 6) 1492 return PSMOUSE_GOOD_DATA; 1493 1494 if (psmouse->pktcnt == 6) { 1495 /* 1496 * Start a timer to flush the packet if it ends up last 1497 * 6-byte packet in the stream. Timer needs to fire 1498 * psmouse core times out itself. 20 ms should be enough 1499 * to decide if we are getting more data or not. 1500 */ 1501 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20)); 1502 return PSMOUSE_GOOD_DATA; 1503 } 1504 1505 del_timer(&priv->timer); 1506 1507 if (psmouse->packet[6] & 0x80) { 1508 1509 /* 1510 * Highest bit is set - that means we either had 1511 * complete ALPS packet and this is start of the 1512 * next packet or we got garbage. 1513 */ 1514 1515 if (((psmouse->packet[3] | 1516 psmouse->packet[4] | 1517 psmouse->packet[5]) & 0x80) || 1518 (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) { 1519 psmouse_dbg(psmouse, 1520 "refusing packet %4ph (suspected interleaved ps/2)\n", 1521 psmouse->packet + 3); 1522 return PSMOUSE_BAD_DATA; 1523 } 1524 1525 priv->process_packet(psmouse); 1526 1527 /* Continue with the next packet */ 1528 psmouse->packet[0] = psmouse->packet[6]; 1529 psmouse->pktcnt = 1; 1530 1531 } else { 1532 1533 /* 1534 * High bit is 0 - that means that we indeed got a PS/2 1535 * packet in the middle of ALPS packet. 1536 * 1537 * There is also possibility that we got 6-byte ALPS 1538 * packet followed by 3-byte packet from trackpoint. We 1539 * can not distinguish between these 2 scenarios but 1540 * because the latter is unlikely to happen in course of 1541 * normal operation (user would need to press all 1542 * buttons on the pad and start moving trackpoint 1543 * without touching the pad surface) we assume former. 1544 * Even if we are wrong the wost thing that would happen 1545 * the cursor would jump but we should not get protocol 1546 * de-synchronization. 1547 */ 1548 1549 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3], 1550 false); 1551 1552 /* 1553 * Continue with the standard ALPS protocol handling, 1554 * but make sure we won't process it as an interleaved 1555 * packet again, which may happen if all buttons are 1556 * pressed. To avoid this let's reset the 4th bit which 1557 * is normally 1. 1558 */ 1559 psmouse->packet[3] = psmouse->packet[6] & 0xf7; 1560 psmouse->pktcnt = 4; 1561 } 1562 1563 return PSMOUSE_GOOD_DATA; 1564 } 1565 1566 static void alps_flush_packet(unsigned long data) 1567 { 1568 struct psmouse *psmouse = (struct psmouse *)data; 1569 struct alps_data *priv = psmouse->private; 1570 1571 serio_pause_rx(psmouse->ps2dev.serio); 1572 1573 if (psmouse->pktcnt == psmouse->pktsize) { 1574 1575 /* 1576 * We did not any more data in reasonable amount of time. 1577 * Validate the last 3 bytes and process as a standard 1578 * ALPS packet. 1579 */ 1580 if ((psmouse->packet[3] | 1581 psmouse->packet[4] | 1582 psmouse->packet[5]) & 0x80) { 1583 psmouse_dbg(psmouse, 1584 "refusing packet %3ph (suspected interleaved ps/2)\n", 1585 psmouse->packet + 3); 1586 } else { 1587 priv->process_packet(psmouse); 1588 } 1589 psmouse->pktcnt = 0; 1590 } 1591 1592 serio_continue_rx(psmouse->ps2dev.serio); 1593 } 1594 1595 static psmouse_ret_t alps_process_byte(struct psmouse *psmouse) 1596 { 1597 struct alps_data *priv = psmouse->private; 1598 1599 /* 1600 * Check if we are dealing with a bare PS/2 packet, presumably from 1601 * a device connected to the external PS/2 port. Because bare PS/2 1602 * protocol does not have enough constant bits to self-synchronize 1603 * properly we only do this if the device is fully synchronized. 1604 * Can not distinguish V8's first byte from PS/2 packet's 1605 */ 1606 if (priv->proto_version != ALPS_PROTO_V8 && 1607 !psmouse->out_of_sync_cnt && 1608 (psmouse->packet[0] & 0xc8) == 0x08) { 1609 1610 if (psmouse->pktcnt == 3) { 1611 alps_report_bare_ps2_packet(psmouse, psmouse->packet, 1612 true); 1613 return PSMOUSE_FULL_PACKET; 1614 } 1615 return PSMOUSE_GOOD_DATA; 1616 } 1617 1618 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */ 1619 1620 if ((priv->flags & ALPS_PS2_INTERLEAVED) && 1621 psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) { 1622 return alps_handle_interleaved_ps2(psmouse); 1623 } 1624 1625 if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) { 1626 psmouse_dbg(psmouse, 1627 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n", 1628 psmouse->packet[0], priv->mask0, priv->byte0); 1629 return PSMOUSE_BAD_DATA; 1630 } 1631 1632 /* Bytes 2 - pktsize should have 0 in the highest bit */ 1633 if (priv->proto_version < ALPS_PROTO_V5 && 1634 psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize && 1635 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) { 1636 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1637 psmouse->pktcnt - 1, 1638 psmouse->packet[psmouse->pktcnt - 1]); 1639 1640 if (priv->proto_version == ALPS_PROTO_V3_RUSHMORE && 1641 psmouse->pktcnt == psmouse->pktsize) { 1642 /* 1643 * Some Dell boxes, such as Latitude E6440 or E7440 1644 * with closed lid, quite often smash last byte of 1645 * otherwise valid packet with 0xff. Given that the 1646 * next packet is very likely to be valid let's 1647 * report PSMOUSE_FULL_PACKET but not process data, 1648 * rather than reporting PSMOUSE_BAD_DATA and 1649 * filling the logs. 1650 */ 1651 return PSMOUSE_FULL_PACKET; 1652 } 1653 1654 return PSMOUSE_BAD_DATA; 1655 } 1656 1657 if ((priv->proto_version == ALPS_PROTO_V7 && 1658 !alps_is_valid_package_v7(psmouse)) || 1659 (priv->proto_version == ALPS_PROTO_V8 && 1660 !alps_is_valid_package_ss4_v2(psmouse))) { 1661 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1662 psmouse->pktcnt - 1, 1663 psmouse->packet[psmouse->pktcnt - 1]); 1664 return PSMOUSE_BAD_DATA; 1665 } 1666 1667 if (psmouse->pktcnt == psmouse->pktsize) { 1668 priv->process_packet(psmouse); 1669 return PSMOUSE_FULL_PACKET; 1670 } 1671 1672 return PSMOUSE_GOOD_DATA; 1673 } 1674 1675 static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble) 1676 { 1677 struct ps2dev *ps2dev = &psmouse->ps2dev; 1678 struct alps_data *priv = psmouse->private; 1679 int command; 1680 unsigned char *param; 1681 unsigned char dummy[4]; 1682 1683 BUG_ON(nibble > 0xf); 1684 1685 command = priv->nibble_commands[nibble].command; 1686 param = (command & 0x0f00) ? 1687 dummy : (unsigned char *)&priv->nibble_commands[nibble].data; 1688 1689 if (ps2_command(ps2dev, param, command)) 1690 return -1; 1691 1692 return 0; 1693 } 1694 1695 static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr) 1696 { 1697 struct ps2dev *ps2dev = &psmouse->ps2dev; 1698 struct alps_data *priv = psmouse->private; 1699 int i, nibble; 1700 1701 if (ps2_command(ps2dev, NULL, priv->addr_command)) 1702 return -1; 1703 1704 for (i = 12; i >= 0; i -= 4) { 1705 nibble = (addr >> i) & 0xf; 1706 if (alps_command_mode_send_nibble(psmouse, nibble)) 1707 return -1; 1708 } 1709 1710 return 0; 1711 } 1712 1713 static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1714 { 1715 struct ps2dev *ps2dev = &psmouse->ps2dev; 1716 unsigned char param[4]; 1717 1718 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1719 return -1; 1720 1721 /* 1722 * The address being read is returned in the first two bytes 1723 * of the result. Check that this address matches the expected 1724 * address. 1725 */ 1726 if (addr != ((param[0] << 8) | param[1])) 1727 return -1; 1728 1729 return param[2]; 1730 } 1731 1732 static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1733 { 1734 if (alps_command_mode_set_addr(psmouse, addr)) 1735 return -1; 1736 return __alps_command_mode_read_reg(psmouse, addr); 1737 } 1738 1739 static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value) 1740 { 1741 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf)) 1742 return -1; 1743 if (alps_command_mode_send_nibble(psmouse, value & 0xf)) 1744 return -1; 1745 return 0; 1746 } 1747 1748 static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr, 1749 u8 value) 1750 { 1751 if (alps_command_mode_set_addr(psmouse, addr)) 1752 return -1; 1753 return __alps_command_mode_write_reg(psmouse, value); 1754 } 1755 1756 static int alps_rpt_cmd(struct psmouse *psmouse, int init_command, 1757 int repeated_command, unsigned char *param) 1758 { 1759 struct ps2dev *ps2dev = &psmouse->ps2dev; 1760 1761 param[0] = 0; 1762 if (init_command && ps2_command(ps2dev, param, init_command)) 1763 return -EIO; 1764 1765 if (ps2_command(ps2dev, NULL, repeated_command) || 1766 ps2_command(ps2dev, NULL, repeated_command) || 1767 ps2_command(ps2dev, NULL, repeated_command)) 1768 return -EIO; 1769 1770 param[0] = param[1] = param[2] = 0xff; 1771 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1772 return -EIO; 1773 1774 psmouse_dbg(psmouse, "%2.2X report: %3ph\n", 1775 repeated_command, param); 1776 return 0; 1777 } 1778 1779 static bool alps_check_valid_firmware_id(unsigned char id[]) 1780 { 1781 if (id[0] == 0x73) 1782 return true; 1783 1784 if (id[0] == 0x88 && 1785 (id[1] == 0x07 || 1786 id[1] == 0x08 || 1787 (id[1] & 0xf0) == 0xb0 || 1788 (id[1] & 0xf0) == 0xc0)) { 1789 return true; 1790 } 1791 1792 return false; 1793 } 1794 1795 static int alps_enter_command_mode(struct psmouse *psmouse) 1796 { 1797 unsigned char param[4]; 1798 1799 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) { 1800 psmouse_err(psmouse, "failed to enter command mode\n"); 1801 return -1; 1802 } 1803 1804 if (!alps_check_valid_firmware_id(param)) { 1805 psmouse_dbg(psmouse, 1806 "unknown response while entering command mode\n"); 1807 return -1; 1808 } 1809 return 0; 1810 } 1811 1812 static inline int alps_exit_command_mode(struct psmouse *psmouse) 1813 { 1814 struct ps2dev *ps2dev = &psmouse->ps2dev; 1815 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) 1816 return -1; 1817 return 0; 1818 } 1819 1820 /* 1821 * For DualPoint devices select the device that should respond to 1822 * subsequent commands. It looks like glidepad is behind stickpointer, 1823 * I'd thought it would be other way around... 1824 */ 1825 static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable) 1826 { 1827 struct ps2dev *ps2dev = &psmouse->ps2dev; 1828 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11; 1829 1830 if (ps2_command(ps2dev, NULL, cmd) || 1831 ps2_command(ps2dev, NULL, cmd) || 1832 ps2_command(ps2dev, NULL, cmd) || 1833 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1834 return -1; 1835 1836 /* we may get 3 more bytes, just ignore them */ 1837 ps2_drain(ps2dev, 3, 100); 1838 1839 return 0; 1840 } 1841 1842 static int alps_absolute_mode_v1_v2(struct psmouse *psmouse) 1843 { 1844 struct ps2dev *ps2dev = &psmouse->ps2dev; 1845 1846 /* Try ALPS magic knock - 4 disable before enable */ 1847 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1848 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1849 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1850 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1851 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) 1852 return -1; 1853 1854 /* 1855 * Switch mouse to poll (remote) mode so motion data will not 1856 * get in our way 1857 */ 1858 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL); 1859 } 1860 1861 static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word) 1862 { 1863 int i, nibble; 1864 1865 /* 1866 * b0-b11 are valid bits, send sequence is inverse. 1867 * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1 1868 */ 1869 for (i = 0; i <= 8; i += 4) { 1870 nibble = (word >> i) & 0xf; 1871 if (alps_command_mode_send_nibble(psmouse, nibble)) 1872 return -1; 1873 } 1874 1875 return 0; 1876 } 1877 1878 static int alps_monitor_mode_write_reg(struct psmouse *psmouse, 1879 u16 addr, u16 value) 1880 { 1881 struct ps2dev *ps2dev = &psmouse->ps2dev; 1882 1883 /* 0x0A0 is the command to write the word */ 1884 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) || 1885 alps_monitor_mode_send_word(psmouse, 0x0A0) || 1886 alps_monitor_mode_send_word(psmouse, addr) || 1887 alps_monitor_mode_send_word(psmouse, value) || 1888 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1889 return -1; 1890 1891 return 0; 1892 } 1893 1894 static int alps_monitor_mode(struct psmouse *psmouse, bool enable) 1895 { 1896 struct ps2dev *ps2dev = &psmouse->ps2dev; 1897 1898 if (enable) { 1899 /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */ 1900 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 1901 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) || 1902 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1903 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1904 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1905 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1906 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1907 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO)) 1908 return -1; 1909 } else { 1910 /* EC to exit monitor mode */ 1911 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP)) 1912 return -1; 1913 } 1914 1915 return 0; 1916 } 1917 1918 static int alps_absolute_mode_v6(struct psmouse *psmouse) 1919 { 1920 u16 reg_val = 0x181; 1921 int ret = -1; 1922 1923 /* enter monitor mode, to write the register */ 1924 if (alps_monitor_mode(psmouse, true)) 1925 return -1; 1926 1927 ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val); 1928 1929 if (alps_monitor_mode(psmouse, false)) 1930 ret = -1; 1931 1932 return ret; 1933 } 1934 1935 static int alps_get_status(struct psmouse *psmouse, char *param) 1936 { 1937 /* Get status: 0xF5 0xF5 0xF5 0xE9 */ 1938 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param)) 1939 return -1; 1940 1941 return 0; 1942 } 1943 1944 /* 1945 * Turn touchpad tapping on or off. The sequences are: 1946 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable, 1947 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable. 1948 * My guess that 0xE9 (GetInfo) is here as a sync point. 1949 * For models that also have stickpointer (DualPoints) its tapping 1950 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but 1951 * we don't fiddle with it. 1952 */ 1953 static int alps_tap_mode(struct psmouse *psmouse, int enable) 1954 { 1955 struct ps2dev *ps2dev = &psmouse->ps2dev; 1956 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES; 1957 unsigned char tap_arg = enable ? 0x0A : 0x00; 1958 unsigned char param[4]; 1959 1960 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) || 1961 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1962 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1963 ps2_command(ps2dev, &tap_arg, cmd)) 1964 return -1; 1965 1966 if (alps_get_status(psmouse, param)) 1967 return -1; 1968 1969 return 0; 1970 } 1971 1972 /* 1973 * alps_poll() - poll the touchpad for current motion packet. 1974 * Used in resync. 1975 */ 1976 static int alps_poll(struct psmouse *psmouse) 1977 { 1978 struct alps_data *priv = psmouse->private; 1979 unsigned char buf[sizeof(psmouse->packet)]; 1980 bool poll_failed; 1981 1982 if (priv->flags & ALPS_PASS) 1983 alps_passthrough_mode_v2(psmouse, true); 1984 1985 poll_failed = ps2_command(&psmouse->ps2dev, buf, 1986 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0; 1987 1988 if (priv->flags & ALPS_PASS) 1989 alps_passthrough_mode_v2(psmouse, false); 1990 1991 if (poll_failed || (buf[0] & priv->mask0) != priv->byte0) 1992 return -1; 1993 1994 if ((psmouse->badbyte & 0xc8) == 0x08) { 1995 /* 1996 * Poll the track stick ... 1997 */ 1998 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8))) 1999 return -1; 2000 } 2001 2002 memcpy(psmouse->packet, buf, sizeof(buf)); 2003 return 0; 2004 } 2005 2006 static int alps_hw_init_v1_v2(struct psmouse *psmouse) 2007 { 2008 struct alps_data *priv = psmouse->private; 2009 2010 if ((priv->flags & ALPS_PASS) && 2011 alps_passthrough_mode_v2(psmouse, true)) { 2012 return -1; 2013 } 2014 2015 if (alps_tap_mode(psmouse, true)) { 2016 psmouse_warn(psmouse, "Failed to enable hardware tapping\n"); 2017 return -1; 2018 } 2019 2020 if (alps_absolute_mode_v1_v2(psmouse)) { 2021 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 2022 return -1; 2023 } 2024 2025 if ((priv->flags & ALPS_PASS) && 2026 alps_passthrough_mode_v2(psmouse, false)) { 2027 return -1; 2028 } 2029 2030 /* ALPS needs stream mode, otherwise it won't report any data */ 2031 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) { 2032 psmouse_err(psmouse, "Failed to enable stream mode\n"); 2033 return -1; 2034 } 2035 2036 return 0; 2037 } 2038 2039 static int alps_hw_init_v6(struct psmouse *psmouse) 2040 { 2041 unsigned char param[2] = {0xC8, 0x14}; 2042 2043 /* Enter passthrough mode to let trackpoint enter 6byte raw mode */ 2044 if (alps_passthrough_mode_v2(psmouse, true)) 2045 return -1; 2046 2047 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2048 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2049 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2050 ps2_command(&psmouse->ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2051 ps2_command(&psmouse->ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 2052 return -1; 2053 2054 if (alps_passthrough_mode_v2(psmouse, false)) 2055 return -1; 2056 2057 if (alps_absolute_mode_v6(psmouse)) { 2058 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 2059 return -1; 2060 } 2061 2062 return 0; 2063 } 2064 2065 /* 2066 * Enable or disable passthrough mode to the trackstick. 2067 */ 2068 static int alps_passthrough_mode_v3(struct psmouse *psmouse, 2069 int reg_base, bool enable) 2070 { 2071 int reg_val, ret = -1; 2072 2073 if (alps_enter_command_mode(psmouse)) 2074 return -1; 2075 2076 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008); 2077 if (reg_val == -1) 2078 goto error; 2079 2080 if (enable) 2081 reg_val |= 0x01; 2082 else 2083 reg_val &= ~0x01; 2084 2085 ret = __alps_command_mode_write_reg(psmouse, reg_val); 2086 2087 error: 2088 if (alps_exit_command_mode(psmouse)) 2089 ret = -1; 2090 return ret; 2091 } 2092 2093 /* Must be in command mode when calling this function */ 2094 static int alps_absolute_mode_v3(struct psmouse *psmouse) 2095 { 2096 int reg_val; 2097 2098 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 2099 if (reg_val == -1) 2100 return -1; 2101 2102 reg_val |= 0x06; 2103 if (__alps_command_mode_write_reg(psmouse, reg_val)) 2104 return -1; 2105 2106 return 0; 2107 } 2108 2109 static int alps_probe_trackstick_v3_v7(struct psmouse *psmouse, int reg_base) 2110 { 2111 int ret = -EIO, reg_val; 2112 2113 if (alps_enter_command_mode(psmouse)) 2114 goto error; 2115 2116 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08); 2117 if (reg_val == -1) 2118 goto error; 2119 2120 /* bit 7: trackstick is present */ 2121 ret = reg_val & 0x80 ? 0 : -ENODEV; 2122 2123 error: 2124 alps_exit_command_mode(psmouse); 2125 return ret; 2126 } 2127 2128 static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base) 2129 { 2130 struct ps2dev *ps2dev = &psmouse->ps2dev; 2131 int ret = 0; 2132 unsigned char param[4]; 2133 2134 if (alps_passthrough_mode_v3(psmouse, reg_base, true)) 2135 return -EIO; 2136 2137 /* 2138 * E7 report for the trackstick 2139 * 2140 * There have been reports of failures to seem to trace back 2141 * to the above trackstick check failing. When these occur 2142 * this E7 report fails, so when that happens we continue 2143 * with the assumption that there isn't a trackstick after 2144 * all. 2145 */ 2146 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) { 2147 psmouse_warn(psmouse, "Failed to initialize trackstick (E7 report failed)\n"); 2148 ret = -ENODEV; 2149 } else { 2150 psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param); 2151 2152 /* 2153 * Not sure what this does, but it is absolutely 2154 * essential. Without it, the touchpad does not 2155 * work at all and the trackstick just emits normal 2156 * PS/2 packets. 2157 */ 2158 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2159 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2160 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2161 alps_command_mode_send_nibble(psmouse, 0x9) || 2162 alps_command_mode_send_nibble(psmouse, 0x4)) { 2163 psmouse_err(psmouse, 2164 "Error sending magic E6 sequence\n"); 2165 ret = -EIO; 2166 goto error; 2167 } 2168 2169 /* 2170 * This ensures the trackstick packets are in the format 2171 * supported by this driver. If bit 1 isn't set the packet 2172 * format is different. 2173 */ 2174 if (alps_enter_command_mode(psmouse) || 2175 alps_command_mode_write_reg(psmouse, 2176 reg_base + 0x08, 0x82) || 2177 alps_exit_command_mode(psmouse)) 2178 ret = -EIO; 2179 } 2180 2181 error: 2182 if (alps_passthrough_mode_v3(psmouse, reg_base, false)) 2183 ret = -EIO; 2184 2185 return ret; 2186 } 2187 2188 static int alps_hw_init_v3(struct psmouse *psmouse) 2189 { 2190 struct alps_data *priv = psmouse->private; 2191 struct ps2dev *ps2dev = &psmouse->ps2dev; 2192 int reg_val; 2193 unsigned char param[4]; 2194 2195 if ((priv->flags & ALPS_DUALPOINT) && 2196 alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO) 2197 goto error; 2198 2199 if (alps_enter_command_mode(psmouse) || 2200 alps_absolute_mode_v3(psmouse)) { 2201 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 2202 goto error; 2203 } 2204 2205 reg_val = alps_command_mode_read_reg(psmouse, 0x0006); 2206 if (reg_val == -1) 2207 goto error; 2208 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 2209 goto error; 2210 2211 reg_val = alps_command_mode_read_reg(psmouse, 0x0007); 2212 if (reg_val == -1) 2213 goto error; 2214 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 2215 goto error; 2216 2217 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1) 2218 goto error; 2219 if (__alps_command_mode_write_reg(psmouse, 0x04)) 2220 goto error; 2221 2222 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1) 2223 goto error; 2224 if (__alps_command_mode_write_reg(psmouse, 0x03)) 2225 goto error; 2226 2227 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1) 2228 goto error; 2229 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03)) 2230 goto error; 2231 2232 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1) 2233 goto error; 2234 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04)) 2235 goto error; 2236 2237 alps_exit_command_mode(psmouse); 2238 2239 /* Set rate and enable data reporting */ 2240 param[0] = 0x64; 2241 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 2242 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 2243 psmouse_err(psmouse, "Failed to enable data reporting\n"); 2244 return -1; 2245 } 2246 2247 return 0; 2248 2249 error: 2250 /* 2251 * Leaving the touchpad in command mode will essentially render 2252 * it unusable until the machine reboots, so exit it here just 2253 * to be safe 2254 */ 2255 alps_exit_command_mode(psmouse); 2256 return -1; 2257 } 2258 2259 static int alps_get_v3_v7_resolution(struct psmouse *psmouse, int reg_pitch) 2260 { 2261 int reg, x_pitch, y_pitch, x_electrode, y_electrode, x_phys, y_phys; 2262 struct alps_data *priv = psmouse->private; 2263 2264 reg = alps_command_mode_read_reg(psmouse, reg_pitch); 2265 if (reg < 0) 2266 return reg; 2267 2268 x_pitch = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ 2269 x_pitch = 50 + 2 * x_pitch; /* In 0.1 mm units */ 2270 2271 y_pitch = (char)reg >> 4; /* sign extend upper 4 bits */ 2272 y_pitch = 36 + 2 * y_pitch; /* In 0.1 mm units */ 2273 2274 reg = alps_command_mode_read_reg(psmouse, reg_pitch + 1); 2275 if (reg < 0) 2276 return reg; 2277 2278 x_electrode = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ 2279 x_electrode = 17 + x_electrode; 2280 2281 y_electrode = (char)reg >> 4; /* sign extend upper 4 bits */ 2282 y_electrode = 13 + y_electrode; 2283 2284 x_phys = x_pitch * (x_electrode - 1); /* In 0.1 mm units */ 2285 y_phys = y_pitch * (y_electrode - 1); /* In 0.1 mm units */ 2286 2287 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ 2288 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ 2289 2290 psmouse_dbg(psmouse, 2291 "pitch %dx%d num-electrodes %dx%d physical size %dx%d mm res %dx%d\n", 2292 x_pitch, y_pitch, x_electrode, y_electrode, 2293 x_phys / 10, y_phys / 10, priv->x_res, priv->y_res); 2294 2295 return 0; 2296 } 2297 2298 static int alps_hw_init_rushmore_v3(struct psmouse *psmouse) 2299 { 2300 struct alps_data *priv = psmouse->private; 2301 struct ps2dev *ps2dev = &psmouse->ps2dev; 2302 int reg_val, ret = -1; 2303 2304 if (priv->flags & ALPS_DUALPOINT) { 2305 reg_val = alps_setup_trackstick_v3(psmouse, 2306 ALPS_REG_BASE_RUSHMORE); 2307 if (reg_val == -EIO) 2308 goto error; 2309 } 2310 2311 if (alps_enter_command_mode(psmouse) || 2312 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 || 2313 alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00)) 2314 goto error; 2315 2316 if (alps_get_v3_v7_resolution(psmouse, 0xc2da)) 2317 goto error; 2318 2319 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6); 2320 if (reg_val == -1) 2321 goto error; 2322 if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd)) 2323 goto error; 2324 2325 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 2326 goto error; 2327 2328 /* enter absolute mode */ 2329 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 2330 if (reg_val == -1) 2331 goto error; 2332 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 2333 goto error; 2334 2335 alps_exit_command_mode(psmouse); 2336 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2337 2338 error: 2339 alps_exit_command_mode(psmouse); 2340 return ret; 2341 } 2342 2343 /* Must be in command mode when calling this function */ 2344 static int alps_absolute_mode_v4(struct psmouse *psmouse) 2345 { 2346 int reg_val; 2347 2348 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 2349 if (reg_val == -1) 2350 return -1; 2351 2352 reg_val |= 0x02; 2353 if (__alps_command_mode_write_reg(psmouse, reg_val)) 2354 return -1; 2355 2356 return 0; 2357 } 2358 2359 static int alps_hw_init_v4(struct psmouse *psmouse) 2360 { 2361 struct ps2dev *ps2dev = &psmouse->ps2dev; 2362 unsigned char param[4]; 2363 2364 if (alps_enter_command_mode(psmouse)) 2365 goto error; 2366 2367 if (alps_absolute_mode_v4(psmouse)) { 2368 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 2369 goto error; 2370 } 2371 2372 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c)) 2373 goto error; 2374 2375 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03)) 2376 goto error; 2377 2378 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03)) 2379 goto error; 2380 2381 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15)) 2382 goto error; 2383 2384 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01)) 2385 goto error; 2386 2387 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03)) 2388 goto error; 2389 2390 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03)) 2391 goto error; 2392 2393 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03)) 2394 goto error; 2395 2396 alps_exit_command_mode(psmouse); 2397 2398 /* 2399 * This sequence changes the output from a 9-byte to an 2400 * 8-byte format. All the same data seems to be present, 2401 * just in a more compact format. 2402 */ 2403 param[0] = 0xc8; 2404 param[1] = 0x64; 2405 param[2] = 0x50; 2406 if (ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2407 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE) || 2408 ps2_command(ps2dev, ¶m[2], PSMOUSE_CMD_SETRATE) || 2409 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) 2410 return -1; 2411 2412 /* Set rate and enable data reporting */ 2413 param[0] = 0x64; 2414 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 2415 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 2416 psmouse_err(psmouse, "Failed to enable data reporting\n"); 2417 return -1; 2418 } 2419 2420 return 0; 2421 2422 error: 2423 /* 2424 * Leaving the touchpad in command mode will essentially render 2425 * it unusable until the machine reboots, so exit it here just 2426 * to be safe 2427 */ 2428 alps_exit_command_mode(psmouse); 2429 return -1; 2430 } 2431 2432 static int alps_get_otp_values_ss4_v2(struct psmouse *psmouse, 2433 unsigned char index, unsigned char otp[]) 2434 { 2435 struct ps2dev *ps2dev = &psmouse->ps2dev; 2436 2437 switch (index) { 2438 case 0: 2439 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2440 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2441 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) 2442 return -1; 2443 2444 break; 2445 2446 case 1: 2447 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2448 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2449 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) 2450 return -1; 2451 2452 break; 2453 } 2454 2455 return 0; 2456 } 2457 2458 static int alps_update_device_area_ss4_v2(unsigned char otp[][4], 2459 struct alps_data *priv) 2460 { 2461 int num_x_electrode; 2462 int num_y_electrode; 2463 int x_pitch, y_pitch, x_phys, y_phys; 2464 2465 num_x_electrode = SS4_NUMSENSOR_XOFFSET + (otp[1][0] & 0x0F); 2466 num_y_electrode = SS4_NUMSENSOR_YOFFSET + ((otp[1][0] >> 4) & 0x0F); 2467 2468 priv->x_max = (num_x_electrode - 1) * SS4_COUNT_PER_ELECTRODE; 2469 priv->y_max = (num_y_electrode - 1) * SS4_COUNT_PER_ELECTRODE; 2470 2471 x_pitch = ((otp[1][2] >> 2) & 0x07) + SS4_MIN_PITCH_MM; 2472 y_pitch = ((otp[1][2] >> 5) & 0x07) + SS4_MIN_PITCH_MM; 2473 2474 x_phys = x_pitch * (num_x_electrode - 1); /* In 0.1 mm units */ 2475 y_phys = y_pitch * (num_y_electrode - 1); /* In 0.1 mm units */ 2476 2477 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ 2478 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ 2479 2480 return 0; 2481 } 2482 2483 static int alps_update_btn_info_ss4_v2(unsigned char otp[][4], 2484 struct alps_data *priv) 2485 { 2486 unsigned char is_btnless; 2487 2488 is_btnless = (otp[1][1] >> 3) & 0x01; 2489 2490 if (is_btnless) 2491 priv->flags |= ALPS_BUTTONPAD; 2492 2493 return 0; 2494 } 2495 2496 static int alps_set_defaults_ss4_v2(struct psmouse *psmouse, 2497 struct alps_data *priv) 2498 { 2499 unsigned char otp[2][4]; 2500 2501 memset(otp, 0, sizeof(otp)); 2502 2503 if (alps_get_otp_values_ss4_v2(psmouse, 0, &otp[0][0]) || 2504 alps_get_otp_values_ss4_v2(psmouse, 1, &otp[1][0])) 2505 return -1; 2506 2507 alps_update_device_area_ss4_v2(otp, priv); 2508 2509 alps_update_btn_info_ss4_v2(otp, priv); 2510 2511 return 0; 2512 } 2513 2514 static int alps_dolphin_get_device_area(struct psmouse *psmouse, 2515 struct alps_data *priv) 2516 { 2517 struct ps2dev *ps2dev = &psmouse->ps2dev; 2518 unsigned char param[4] = {0}; 2519 int num_x_electrode, num_y_electrode; 2520 2521 if (alps_enter_command_mode(psmouse)) 2522 return -1; 2523 2524 param[0] = 0x0a; 2525 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 2526 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2527 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2528 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2529 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE)) 2530 return -1; 2531 2532 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 2533 return -1; 2534 2535 /* 2536 * Dolphin's sensor line number is not fixed. It can be calculated 2537 * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET. 2538 * Further more, we can get device's x_max and y_max by multiplying 2539 * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE. 2540 * 2541 * e.g. When we get register's sensor_x = 11 & sensor_y = 8, 2542 * real sensor line number X = 11 + 8 = 19, and 2543 * real sensor line number Y = 8 + 1 = 9. 2544 * So, x_max = (19 - 1) * 64 = 1152, and 2545 * y_max = (9 - 1) * 64 = 512. 2546 */ 2547 num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F); 2548 num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F); 2549 priv->x_bits = num_x_electrode; 2550 priv->y_bits = num_y_electrode; 2551 priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2552 priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2553 2554 if (alps_exit_command_mode(psmouse)) 2555 return -1; 2556 2557 return 0; 2558 } 2559 2560 static int alps_hw_init_dolphin_v1(struct psmouse *psmouse) 2561 { 2562 struct ps2dev *ps2dev = &psmouse->ps2dev; 2563 unsigned char param[2]; 2564 2565 /* This is dolphin "v1" as empirically defined by florin9doi */ 2566 param[0] = 0x64; 2567 param[1] = 0x28; 2568 2569 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2570 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2571 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 2572 return -1; 2573 2574 return 0; 2575 } 2576 2577 static int alps_hw_init_v7(struct psmouse *psmouse) 2578 { 2579 struct ps2dev *ps2dev = &psmouse->ps2dev; 2580 int reg_val, ret = -1; 2581 2582 if (alps_enter_command_mode(psmouse) || 2583 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1) 2584 goto error; 2585 2586 if (alps_get_v3_v7_resolution(psmouse, 0xc397)) 2587 goto error; 2588 2589 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 2590 goto error; 2591 2592 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 2593 if (reg_val == -1) 2594 goto error; 2595 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 2596 goto error; 2597 2598 alps_exit_command_mode(psmouse); 2599 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2600 2601 error: 2602 alps_exit_command_mode(psmouse); 2603 return ret; 2604 } 2605 2606 static int alps_hw_init_ss4_v2(struct psmouse *psmouse) 2607 { 2608 struct ps2dev *ps2dev = &psmouse->ps2dev; 2609 char param[2] = {0x64, 0x28}; 2610 int ret = -1; 2611 2612 /* enter absolute mode */ 2613 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2614 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2615 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2616 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) { 2617 goto error; 2618 } 2619 2620 /* T.B.D. Decread noise packet number, delete in the future */ 2621 if (alps_exit_command_mode(psmouse) || 2622 alps_enter_command_mode(psmouse) || 2623 alps_command_mode_write_reg(psmouse, 0x001D, 0x20)) { 2624 goto error; 2625 } 2626 alps_exit_command_mode(psmouse); 2627 2628 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2629 2630 error: 2631 alps_exit_command_mode(psmouse); 2632 return ret; 2633 } 2634 2635 static int alps_set_protocol(struct psmouse *psmouse, 2636 struct alps_data *priv, 2637 const struct alps_protocol_info *protocol) 2638 { 2639 psmouse->private = priv; 2640 2641 setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse); 2642 2643 priv->proto_version = protocol->version; 2644 priv->byte0 = protocol->byte0; 2645 priv->mask0 = protocol->mask0; 2646 priv->flags = protocol->flags; 2647 2648 priv->x_max = 2000; 2649 priv->y_max = 1400; 2650 priv->x_bits = 15; 2651 priv->y_bits = 11; 2652 2653 switch (priv->proto_version) { 2654 case ALPS_PROTO_V1: 2655 case ALPS_PROTO_V2: 2656 priv->hw_init = alps_hw_init_v1_v2; 2657 priv->process_packet = alps_process_packet_v1_v2; 2658 priv->set_abs_params = alps_set_abs_params_st; 2659 priv->x_max = 1023; 2660 priv->y_max = 767; 2661 if (dmi_check_system(alps_dmi_has_separate_stick_buttons)) 2662 priv->flags |= ALPS_STICK_BITS; 2663 break; 2664 2665 case ALPS_PROTO_V3: 2666 priv->hw_init = alps_hw_init_v3; 2667 priv->process_packet = alps_process_packet_v3; 2668 priv->set_abs_params = alps_set_abs_params_semi_mt; 2669 priv->decode_fields = alps_decode_pinnacle; 2670 priv->nibble_commands = alps_v3_nibble_commands; 2671 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2672 2673 if (alps_probe_trackstick_v3_v7(psmouse, 2674 ALPS_REG_BASE_PINNACLE) < 0) 2675 priv->flags &= ~ALPS_DUALPOINT; 2676 2677 break; 2678 2679 case ALPS_PROTO_V3_RUSHMORE: 2680 priv->hw_init = alps_hw_init_rushmore_v3; 2681 priv->process_packet = alps_process_packet_v3; 2682 priv->set_abs_params = alps_set_abs_params_semi_mt; 2683 priv->decode_fields = alps_decode_rushmore; 2684 priv->nibble_commands = alps_v3_nibble_commands; 2685 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2686 priv->x_bits = 16; 2687 priv->y_bits = 12; 2688 2689 if (alps_probe_trackstick_v3_v7(psmouse, 2690 ALPS_REG_BASE_RUSHMORE) < 0) 2691 priv->flags &= ~ALPS_DUALPOINT; 2692 2693 break; 2694 2695 case ALPS_PROTO_V4: 2696 priv->hw_init = alps_hw_init_v4; 2697 priv->process_packet = alps_process_packet_v4; 2698 priv->set_abs_params = alps_set_abs_params_semi_mt; 2699 priv->nibble_commands = alps_v4_nibble_commands; 2700 priv->addr_command = PSMOUSE_CMD_DISABLE; 2701 break; 2702 2703 case ALPS_PROTO_V5: 2704 priv->hw_init = alps_hw_init_dolphin_v1; 2705 priv->process_packet = alps_process_touchpad_packet_v3_v5; 2706 priv->decode_fields = alps_decode_dolphin; 2707 priv->set_abs_params = alps_set_abs_params_semi_mt; 2708 priv->nibble_commands = alps_v3_nibble_commands; 2709 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2710 priv->x_bits = 23; 2711 priv->y_bits = 12; 2712 2713 if (alps_dolphin_get_device_area(psmouse, priv)) 2714 return -EIO; 2715 2716 break; 2717 2718 case ALPS_PROTO_V6: 2719 priv->hw_init = alps_hw_init_v6; 2720 priv->process_packet = alps_process_packet_v6; 2721 priv->set_abs_params = alps_set_abs_params_st; 2722 priv->nibble_commands = alps_v6_nibble_commands; 2723 priv->x_max = 2047; 2724 priv->y_max = 1535; 2725 break; 2726 2727 case ALPS_PROTO_V7: 2728 priv->hw_init = alps_hw_init_v7; 2729 priv->process_packet = alps_process_packet_v7; 2730 priv->decode_fields = alps_decode_packet_v7; 2731 priv->set_abs_params = alps_set_abs_params_v7; 2732 priv->nibble_commands = alps_v3_nibble_commands; 2733 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2734 priv->x_max = 0xfff; 2735 priv->y_max = 0x7ff; 2736 2737 if (priv->fw_ver[1] != 0xba) 2738 priv->flags |= ALPS_BUTTONPAD; 2739 2740 if (alps_probe_trackstick_v3_v7(psmouse, ALPS_REG_BASE_V7) < 0) 2741 priv->flags &= ~ALPS_DUALPOINT; 2742 2743 break; 2744 2745 case ALPS_PROTO_V8: 2746 priv->hw_init = alps_hw_init_ss4_v2; 2747 priv->process_packet = alps_process_packet_ss4_v2; 2748 priv->decode_fields = alps_decode_ss4_v2; 2749 priv->set_abs_params = alps_set_abs_params_ss4_v2; 2750 priv->nibble_commands = alps_v3_nibble_commands; 2751 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2752 2753 if (alps_set_defaults_ss4_v2(psmouse, priv)) 2754 return -EIO; 2755 2756 if (priv->fw_ver[1] == 0x1) 2757 priv->flags |= ALPS_DUALPOINT | 2758 ALPS_DUALPOINT_WITH_PRESSURE; 2759 2760 break; 2761 } 2762 2763 return 0; 2764 } 2765 2766 static const struct alps_protocol_info *alps_match_table(unsigned char *e7, 2767 unsigned char *ec) 2768 { 2769 const struct alps_model_info *model; 2770 int i; 2771 2772 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) { 2773 model = &alps_model_data[i]; 2774 2775 if (!memcmp(e7, model->signature, sizeof(model->signature)) && 2776 (!model->command_mode_resp || 2777 model->command_mode_resp == ec[2])) { 2778 2779 return &model->protocol_info; 2780 } 2781 } 2782 2783 return NULL; 2784 } 2785 2786 static int alps_identify(struct psmouse *psmouse, struct alps_data *priv) 2787 { 2788 const struct alps_protocol_info *protocol; 2789 unsigned char e6[4], e7[4], ec[4]; 2790 int error; 2791 2792 /* 2793 * First try "E6 report". 2794 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed. 2795 * The bits 0-2 of the first byte will be 1s if some buttons are 2796 * pressed. 2797 */ 2798 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2799 PSMOUSE_CMD_SETSCALE11, e6)) 2800 return -EIO; 2801 2802 if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100)) 2803 return -EINVAL; 2804 2805 /* 2806 * Now get the "E7" and "EC" reports. These will uniquely identify 2807 * most ALPS touchpads. 2808 */ 2809 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2810 PSMOUSE_CMD_SETSCALE21, e7) || 2811 alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2812 PSMOUSE_CMD_RESET_WRAP, ec) || 2813 alps_exit_command_mode(psmouse)) 2814 return -EIO; 2815 2816 protocol = alps_match_table(e7, ec); 2817 if (!protocol) { 2818 if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 && 2819 ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) { 2820 protocol = &alps_v5_protocol_data; 2821 } else if (ec[0] == 0x88 && 2822 ((ec[1] & 0xf0) == 0xb0 || (ec[1] & 0xf0) == 0xc0)) { 2823 protocol = &alps_v7_protocol_data; 2824 } else if (ec[0] == 0x88 && ec[1] == 0x08) { 2825 protocol = &alps_v3_rushmore_data; 2826 } else if (ec[0] == 0x88 && ec[1] == 0x07 && 2827 ec[2] >= 0x90 && ec[2] <= 0x9d) { 2828 protocol = &alps_v3_protocol_data; 2829 } else if (e7[0] == 0x73 && e7[1] == 0x03 && 2830 e7[2] == 0x14 && ec[1] == 0x02) { 2831 protocol = &alps_v8_protocol_data; 2832 } else if (e7[0] == 0x73 && e7[1] == 0x03 && 2833 e7[2] == 0x28 && ec[1] == 0x01) { 2834 protocol = &alps_v8_protocol_data; 2835 } else { 2836 psmouse_dbg(psmouse, 2837 "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec); 2838 return -EINVAL; 2839 } 2840 } 2841 2842 if (priv) { 2843 /* Save the Firmware version */ 2844 memcpy(priv->fw_ver, ec, 3); 2845 error = alps_set_protocol(psmouse, priv, protocol); 2846 if (error) 2847 return error; 2848 } 2849 2850 return 0; 2851 } 2852 2853 static int alps_reconnect(struct psmouse *psmouse) 2854 { 2855 struct alps_data *priv = psmouse->private; 2856 2857 psmouse_reset(psmouse); 2858 2859 if (alps_identify(psmouse, priv) < 0) 2860 return -1; 2861 2862 return priv->hw_init(psmouse); 2863 } 2864 2865 static void alps_disconnect(struct psmouse *psmouse) 2866 { 2867 struct alps_data *priv = psmouse->private; 2868 2869 psmouse_reset(psmouse); 2870 del_timer_sync(&priv->timer); 2871 if (priv->dev2) 2872 input_unregister_device(priv->dev2); 2873 if (!IS_ERR_OR_NULL(priv->dev3)) 2874 input_unregister_device(priv->dev3); 2875 kfree(priv); 2876 } 2877 2878 static void alps_set_abs_params_st(struct alps_data *priv, 2879 struct input_dev *dev1) 2880 { 2881 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0); 2882 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0); 2883 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2884 } 2885 2886 static void alps_set_abs_params_mt_common(struct alps_data *priv, 2887 struct input_dev *dev1) 2888 { 2889 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0); 2890 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0); 2891 2892 input_abs_set_res(dev1, ABS_MT_POSITION_X, priv->x_res); 2893 input_abs_set_res(dev1, ABS_MT_POSITION_Y, priv->y_res); 2894 2895 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit); 2896 set_bit(BTN_TOOL_QUADTAP, dev1->keybit); 2897 } 2898 2899 static void alps_set_abs_params_semi_mt(struct alps_data *priv, 2900 struct input_dev *dev1) 2901 { 2902 alps_set_abs_params_mt_common(priv, dev1); 2903 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2904 2905 input_mt_init_slots(dev1, MAX_TOUCHES, 2906 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 2907 INPUT_MT_SEMI_MT); 2908 } 2909 2910 static void alps_set_abs_params_v7(struct alps_data *priv, 2911 struct input_dev *dev1) 2912 { 2913 alps_set_abs_params_mt_common(priv, dev1); 2914 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2915 2916 input_mt_init_slots(dev1, MAX_TOUCHES, 2917 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 2918 INPUT_MT_TRACK); 2919 2920 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2921 } 2922 2923 static void alps_set_abs_params_ss4_v2(struct alps_data *priv, 2924 struct input_dev *dev1) 2925 { 2926 alps_set_abs_params_mt_common(priv, dev1); 2927 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2928 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2929 2930 input_mt_init_slots(dev1, MAX_TOUCHES, 2931 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 2932 INPUT_MT_TRACK); 2933 } 2934 2935 int alps_init(struct psmouse *psmouse) 2936 { 2937 struct alps_data *priv = psmouse->private; 2938 struct input_dev *dev1 = psmouse->dev; 2939 int error; 2940 2941 error = priv->hw_init(psmouse); 2942 if (error) 2943 goto init_fail; 2944 2945 /* 2946 * Undo part of setup done for us by psmouse core since touchpad 2947 * is not a relative device. 2948 */ 2949 __clear_bit(EV_REL, dev1->evbit); 2950 __clear_bit(REL_X, dev1->relbit); 2951 __clear_bit(REL_Y, dev1->relbit); 2952 2953 /* 2954 * Now set up our capabilities. 2955 */ 2956 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY); 2957 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH); 2958 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER); 2959 dev1->keybit[BIT_WORD(BTN_LEFT)] |= 2960 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); 2961 2962 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS); 2963 2964 priv->set_abs_params(priv, dev1); 2965 2966 if (priv->flags & ALPS_WHEEL) { 2967 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL); 2968 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL); 2969 } 2970 2971 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 2972 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD); 2973 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK); 2974 } 2975 2976 if (priv->flags & ALPS_FOUR_BUTTONS) { 2977 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0); 2978 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1); 2979 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2); 2980 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3); 2981 } else if (priv->flags & ALPS_BUTTONPAD) { 2982 set_bit(INPUT_PROP_BUTTONPAD, dev1->propbit); 2983 clear_bit(BTN_RIGHT, dev1->keybit); 2984 } else { 2985 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE); 2986 } 2987 2988 if (priv->flags & ALPS_DUALPOINT) { 2989 struct input_dev *dev2; 2990 2991 dev2 = input_allocate_device(); 2992 if (!dev2) { 2993 psmouse_err(psmouse, 2994 "failed to allocate trackstick device\n"); 2995 error = -ENOMEM; 2996 goto init_fail; 2997 } 2998 2999 snprintf(priv->phys2, sizeof(priv->phys2), "%s/input1", 3000 psmouse->ps2dev.serio->phys); 3001 dev2->phys = priv->phys2; 3002 3003 /* 3004 * format of input device name is: "protocol vendor name" 3005 * see function psmouse_switch_protocol() in psmouse-base.c 3006 */ 3007 dev2->name = "AlpsPS/2 ALPS DualPoint Stick"; 3008 3009 dev2->id.bustype = BUS_I8042; 3010 dev2->id.vendor = 0x0002; 3011 dev2->id.product = PSMOUSE_ALPS; 3012 dev2->id.version = priv->proto_version; 3013 dev2->dev.parent = &psmouse->ps2dev.serio->dev; 3014 3015 input_set_capability(dev2, EV_REL, REL_X); 3016 input_set_capability(dev2, EV_REL, REL_Y); 3017 if (priv->flags & ALPS_DUALPOINT_WITH_PRESSURE) { 3018 input_set_capability(dev2, EV_ABS, ABS_PRESSURE); 3019 input_set_abs_params(dev2, ABS_PRESSURE, 0, 127, 0, 0); 3020 } 3021 input_set_capability(dev2, EV_KEY, BTN_LEFT); 3022 input_set_capability(dev2, EV_KEY, BTN_RIGHT); 3023 input_set_capability(dev2, EV_KEY, BTN_MIDDLE); 3024 3025 __set_bit(INPUT_PROP_POINTER, dev2->propbit); 3026 __set_bit(INPUT_PROP_POINTING_STICK, dev2->propbit); 3027 3028 error = input_register_device(dev2); 3029 if (error) { 3030 psmouse_err(psmouse, 3031 "failed to register trackstick device: %d\n", 3032 error); 3033 input_free_device(dev2); 3034 goto init_fail; 3035 } 3036 3037 priv->dev2 = dev2; 3038 } 3039 3040 priv->psmouse = psmouse; 3041 3042 INIT_DELAYED_WORK(&priv->dev3_register_work, 3043 alps_register_bare_ps2_mouse); 3044 3045 psmouse->protocol_handler = alps_process_byte; 3046 psmouse->poll = alps_poll; 3047 psmouse->disconnect = alps_disconnect; 3048 psmouse->reconnect = alps_reconnect; 3049 psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6; 3050 3051 /* We are having trouble resyncing ALPS touchpads so disable it for now */ 3052 psmouse->resync_time = 0; 3053 3054 /* Allow 2 invalid packets without resetting device */ 3055 psmouse->resetafter = psmouse->pktsize * 2; 3056 3057 return 0; 3058 3059 init_fail: 3060 psmouse_reset(psmouse); 3061 /* 3062 * Even though we did not allocate psmouse->private we do free 3063 * it here. 3064 */ 3065 kfree(psmouse->private); 3066 psmouse->private = NULL; 3067 return error; 3068 } 3069 3070 int alps_detect(struct psmouse *psmouse, bool set_properties) 3071 { 3072 struct alps_data *priv; 3073 int error; 3074 3075 error = alps_identify(psmouse, NULL); 3076 if (error) 3077 return error; 3078 3079 /* 3080 * Reset the device to make sure it is fully operational: 3081 * on some laptops, like certain Dell Latitudes, we may 3082 * fail to properly detect presence of trackstick if device 3083 * has not been reset. 3084 */ 3085 psmouse_reset(psmouse); 3086 3087 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL); 3088 if (!priv) 3089 return -ENOMEM; 3090 3091 error = alps_identify(psmouse, priv); 3092 if (error) { 3093 kfree(priv); 3094 return error; 3095 } 3096 3097 if (set_properties) { 3098 psmouse->vendor = "ALPS"; 3099 psmouse->name = priv->flags & ALPS_DUALPOINT ? 3100 "DualPoint TouchPad" : "GlidePoint"; 3101 psmouse->model = priv->proto_version; 3102 } else { 3103 /* 3104 * Destroy alps_data structure we allocated earlier since 3105 * this was just a "trial run". Otherwise we'll keep it 3106 * to be used by alps_init() which has to be called if 3107 * we succeed and set_properties is true. 3108 */ 3109 kfree(priv); 3110 psmouse->private = NULL; 3111 } 3112 3113 return 0; 3114 } 3115 3116