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 24 #include "psmouse.h" 25 #include "alps.h" 26 27 /* 28 * Definitions for ALPS version 3 and 4 command mode protocol 29 */ 30 #define ALPS_CMD_NIBBLE_10 0x01f2 31 32 #define ALPS_REG_BASE_RUSHMORE 0xc2c0 33 #define ALPS_REG_BASE_PINNACLE 0x0000 34 35 static const struct alps_nibble_commands alps_v3_nibble_commands[] = { 36 { PSMOUSE_CMD_SETPOLL, 0x00 }, /* 0 */ 37 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */ 38 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */ 39 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */ 40 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */ 41 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */ 42 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */ 43 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */ 44 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */ 45 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */ 46 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */ 47 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */ 48 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */ 49 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */ 50 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */ 51 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 52 }; 53 54 static const struct alps_nibble_commands alps_v4_nibble_commands[] = { 55 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */ 56 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */ 57 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */ 58 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */ 59 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */ 60 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */ 61 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */ 62 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */ 63 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */ 64 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */ 65 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */ 66 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */ 67 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */ 68 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */ 69 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */ 70 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 71 }; 72 73 static const struct alps_nibble_commands alps_v6_nibble_commands[] = { 74 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */ 75 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 1 */ 76 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 2 */ 77 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 3 */ 78 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 4 */ 79 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 5 */ 80 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 6 */ 81 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 7 */ 82 { PSMOUSE_CMD_GETID, 0x00 }, /* 8 */ 83 { PSMOUSE_CMD_GETINFO, 0x00 }, /* 9 */ 84 { PSMOUSE_CMD_SETRES, 0x00 }, /* a */ 85 { PSMOUSE_CMD_SETRES, 0x01 }, /* b */ 86 { PSMOUSE_CMD_SETRES, 0x02 }, /* c */ 87 { PSMOUSE_CMD_SETRES, 0x03 }, /* d */ 88 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* e */ 89 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 90 }; 91 92 93 #define ALPS_DUALPOINT 0x02 /* touchpad has trackstick */ 94 #define ALPS_PASS 0x04 /* device has a pass-through port */ 95 96 #define ALPS_WHEEL 0x08 /* hardware wheel present */ 97 #define ALPS_FW_BK_1 0x10 /* front & back buttons present */ 98 #define ALPS_FW_BK_2 0x20 /* front & back buttons present */ 99 #define ALPS_FOUR_BUTTONS 0x40 /* 4 direction button present */ 100 #define ALPS_PS2_INTERLEAVED 0x80 /* 3-byte PS/2 packet interleaved with 101 6-byte ALPS packet */ 102 #define ALPS_IS_RUSHMORE 0x100 /* device is a rushmore */ 103 #define ALPS_BUTTONPAD 0x200 /* device is a clickpad */ 104 105 static const struct alps_model_info alps_model_data[] = { 106 { { 0x32, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Toshiba Salellite Pro M10 */ 107 { { 0x33, 0x02, 0x0a }, 0x00, ALPS_PROTO_V1, 0x88, 0xf8, 0 }, /* UMAX-530T */ 108 { { 0x53, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, 109 { { 0x53, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, 110 { { 0x60, 0x03, 0xc8 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, /* HP ze1115 */ 111 { { 0x63, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, 112 { { 0x63, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, 113 { { 0x63, 0x02, 0x28 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Fujitsu Siemens S6010 */ 114 { { 0x63, 0x02, 0x3c }, 0x00, ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL }, /* Toshiba Satellite S2400-103 */ 115 { { 0x63, 0x02, 0x50 }, 0x00, ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 }, /* NEC Versa L320 */ 116 { { 0x63, 0x02, 0x64 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, 117 { { 0x63, 0x03, 0xc8 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D800 */ 118 { { 0x73, 0x00, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT }, /* ThinkPad R61 8918-5QG */ 119 { { 0x73, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, 120 { { 0x73, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Ahtec Laptop */ 121 { { 0x20, 0x02, 0x0e }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* XXX */ 122 { { 0x22, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, 123 { { 0x22, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D600 */ 124 /* Dell Latitude E5500, E6400, E6500, Precision M4400 */ 125 { { 0x62, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xcf, 0xcf, 126 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED }, 127 { { 0x73, 0x00, 0x14 }, 0x00, ALPS_PROTO_V6, 0xff, 0xff, ALPS_DUALPOINT }, /* Dell XT2 */ 128 { { 0x73, 0x02, 0x50 }, 0x00, ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS }, /* Dell Vostro 1400 */ 129 { { 0x52, 0x01, 0x14 }, 0x00, ALPS_PROTO_V2, 0xff, 0xff, 130 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED }, /* Toshiba Tecra A11-11L */ 131 { { 0x73, 0x02, 0x64 }, 0x8a, ALPS_PROTO_V4, 0x8f, 0x8f, 0 }, 132 }; 133 134 static void alps_set_abs_params_st(struct alps_data *priv, 135 struct input_dev *dev1); 136 static void alps_set_abs_params_mt(struct alps_data *priv, 137 struct input_dev *dev1); 138 139 /* 140 * XXX - this entry is suspicious. First byte has zero lower nibble, 141 * which is what a normal mouse would report. Also, the value 0x0e 142 * isn't valid per PS/2 spec. 143 */ 144 145 /* Packet formats are described in Documentation/input/alps.txt */ 146 147 static bool alps_is_valid_first_byte(struct alps_data *priv, 148 unsigned char data) 149 { 150 return (data & priv->mask0) == priv->byte0; 151 } 152 153 static void alps_report_buttons(struct psmouse *psmouse, 154 struct input_dev *dev1, struct input_dev *dev2, 155 int left, int right, int middle) 156 { 157 struct input_dev *dev; 158 159 /* 160 * If shared button has already been reported on the 161 * other device (dev2) then this event should be also 162 * sent through that device. 163 */ 164 dev = test_bit(BTN_LEFT, dev2->key) ? dev2 : dev1; 165 input_report_key(dev, BTN_LEFT, left); 166 167 dev = test_bit(BTN_RIGHT, dev2->key) ? dev2 : dev1; 168 input_report_key(dev, BTN_RIGHT, right); 169 170 dev = test_bit(BTN_MIDDLE, dev2->key) ? dev2 : dev1; 171 input_report_key(dev, BTN_MIDDLE, middle); 172 173 /* 174 * Sync the _other_ device now, we'll do the first 175 * device later once we report the rest of the events. 176 */ 177 input_sync(dev2); 178 } 179 180 static void alps_process_packet_v1_v2(struct psmouse *psmouse) 181 { 182 struct alps_data *priv = psmouse->private; 183 unsigned char *packet = psmouse->packet; 184 struct input_dev *dev = psmouse->dev; 185 struct input_dev *dev2 = priv->dev2; 186 int x, y, z, ges, fin, left, right, middle; 187 int back = 0, forward = 0; 188 189 if (priv->proto_version == ALPS_PROTO_V1) { 190 left = packet[2] & 0x10; 191 right = packet[2] & 0x08; 192 middle = 0; 193 x = packet[1] | ((packet[0] & 0x07) << 7); 194 y = packet[4] | ((packet[3] & 0x07) << 7); 195 z = packet[5]; 196 } else { 197 left = packet[3] & 1; 198 right = packet[3] & 2; 199 middle = packet[3] & 4; 200 x = packet[1] | ((packet[2] & 0x78) << (7 - 3)); 201 y = packet[4] | ((packet[3] & 0x70) << (7 - 4)); 202 z = packet[5]; 203 } 204 205 if (priv->flags & ALPS_FW_BK_1) { 206 back = packet[0] & 0x10; 207 forward = packet[2] & 4; 208 } 209 210 if (priv->flags & ALPS_FW_BK_2) { 211 back = packet[3] & 4; 212 forward = packet[2] & 4; 213 if ((middle = forward && back)) 214 forward = back = 0; 215 } 216 217 ges = packet[2] & 1; 218 fin = packet[2] & 2; 219 220 if ((priv->flags & ALPS_DUALPOINT) && z == 127) { 221 input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x)); 222 input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y)); 223 224 alps_report_buttons(psmouse, dev2, dev, left, right, middle); 225 226 input_sync(dev2); 227 return; 228 } 229 230 alps_report_buttons(psmouse, dev, dev2, left, right, middle); 231 232 /* Convert hardware tap to a reasonable Z value */ 233 if (ges && !fin) 234 z = 40; 235 236 /* 237 * A "tap and drag" operation is reported by the hardware as a transition 238 * from (!fin && ges) to (fin && ges). This should be translated to the 239 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually. 240 */ 241 if (ges && fin && !priv->prev_fin) { 242 input_report_abs(dev, ABS_X, x); 243 input_report_abs(dev, ABS_Y, y); 244 input_report_abs(dev, ABS_PRESSURE, 0); 245 input_report_key(dev, BTN_TOOL_FINGER, 0); 246 input_sync(dev); 247 } 248 priv->prev_fin = fin; 249 250 if (z > 30) 251 input_report_key(dev, BTN_TOUCH, 1); 252 if (z < 25) 253 input_report_key(dev, BTN_TOUCH, 0); 254 255 if (z > 0) { 256 input_report_abs(dev, ABS_X, x); 257 input_report_abs(dev, ABS_Y, y); 258 } 259 260 input_report_abs(dev, ABS_PRESSURE, z); 261 input_report_key(dev, BTN_TOOL_FINGER, z > 0); 262 263 if (priv->flags & ALPS_WHEEL) 264 input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07)); 265 266 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 267 input_report_key(dev, BTN_FORWARD, forward); 268 input_report_key(dev, BTN_BACK, back); 269 } 270 271 if (priv->flags & ALPS_FOUR_BUTTONS) { 272 input_report_key(dev, BTN_0, packet[2] & 4); 273 input_report_key(dev, BTN_1, packet[0] & 0x10); 274 input_report_key(dev, BTN_2, packet[3] & 4); 275 input_report_key(dev, BTN_3, packet[0] & 0x20); 276 } 277 278 input_sync(dev); 279 } 280 281 /* 282 * Process bitmap data for V5 protocols. Return value is null. 283 * 284 * The bitmaps don't have enough data to track fingers, so this function 285 * only generates points representing a bounding box of at most two contacts. 286 * These two points are returned in fields->mt. 287 */ 288 static void alps_process_bitmap_dolphin(struct alps_data *priv, 289 struct alps_fields *fields) 290 { 291 int box_middle_x, box_middle_y; 292 unsigned int x_map, y_map; 293 unsigned char start_bit, end_bit; 294 unsigned char x_msb, x_lsb, y_msb, y_lsb; 295 296 x_map = fields->x_map; 297 y_map = fields->y_map; 298 299 if (!x_map || !y_map) 300 return; 301 302 /* Get Most-significant and Least-significant bit */ 303 x_msb = fls(x_map); 304 x_lsb = ffs(x_map); 305 y_msb = fls(y_map); 306 y_lsb = ffs(y_map); 307 308 /* Most-significant bit should never exceed max sensor line number */ 309 if (x_msb > priv->x_bits || y_msb > priv->y_bits) 310 return; 311 312 if (fields->fingers > 1) { 313 start_bit = priv->x_bits - x_msb; 314 end_bit = priv->x_bits - x_lsb; 315 box_middle_x = (priv->x_max * (start_bit + end_bit)) / 316 (2 * (priv->x_bits - 1)); 317 318 start_bit = y_lsb - 1; 319 end_bit = y_msb - 1; 320 box_middle_y = (priv->y_max * (start_bit + end_bit)) / 321 (2 * (priv->y_bits - 1)); 322 fields->mt[0] = fields->st; 323 fields->mt[1].x = 2 * box_middle_x - fields->mt[0].x; 324 fields->mt[1].y = 2 * box_middle_y - fields->mt[0].y; 325 } 326 } 327 328 static void alps_get_bitmap_points(unsigned int map, 329 struct alps_bitmap_point *low, 330 struct alps_bitmap_point *high, 331 int *fingers) 332 { 333 struct alps_bitmap_point *point; 334 int i, bit, prev_bit = 0; 335 336 point = low; 337 for (i = 0; map != 0; i++, map >>= 1) { 338 bit = map & 1; 339 if (bit) { 340 if (!prev_bit) { 341 point->start_bit = i; 342 point->num_bits = 0; 343 (*fingers)++; 344 } 345 point->num_bits++; 346 } else { 347 if (prev_bit) 348 point = high; 349 } 350 prev_bit = bit; 351 } 352 } 353 354 /* 355 * Process bitmap data from v3 and v4 protocols. Returns the number of 356 * fingers detected. A return value of 0 means at least one of the 357 * bitmaps was empty. 358 * 359 * The bitmaps don't have enough data to track fingers, so this function 360 * only generates points representing a bounding box of all contacts. 361 * These points are returned in fields->mt when the return value 362 * is greater than 0. 363 */ 364 static int alps_process_bitmap(struct alps_data *priv, 365 struct alps_fields *fields) 366 { 367 int i, fingers_x = 0, fingers_y = 0, fingers; 368 struct alps_bitmap_point x_low = {0,}, x_high = {0,}; 369 struct alps_bitmap_point y_low = {0,}, y_high = {0,}; 370 371 if (!fields->x_map || !fields->y_map) 372 return 0; 373 374 alps_get_bitmap_points(fields->x_map, &x_low, &x_high, &fingers_x); 375 alps_get_bitmap_points(fields->y_map, &y_low, &y_high, &fingers_y); 376 377 /* 378 * Fingers can overlap, so we use the maximum count of fingers 379 * on either axis as the finger count. 380 */ 381 fingers = max(fingers_x, fingers_y); 382 383 /* 384 * If an axis reports only a single contact, we have overlapping or 385 * adjacent fingers. Divide the single contact between the two points. 386 */ 387 if (fingers_x == 1) { 388 i = (x_low.num_bits - 1) / 2; 389 x_low.num_bits = x_low.num_bits - i; 390 x_high.start_bit = x_low.start_bit + i; 391 x_high.num_bits = max(i, 1); 392 } 393 if (fingers_y == 1) { 394 i = (y_low.num_bits - 1) / 2; 395 y_low.num_bits = y_low.num_bits - i; 396 y_high.start_bit = y_low.start_bit + i; 397 y_high.num_bits = max(i, 1); 398 } 399 400 fields->mt[0].x = 401 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) / 402 (2 * (priv->x_bits - 1)); 403 fields->mt[0].y = 404 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) / 405 (2 * (priv->y_bits - 1)); 406 407 fields->mt[1].x = 408 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) / 409 (2 * (priv->x_bits - 1)); 410 fields->mt[1].y = 411 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) / 412 (2 * (priv->y_bits - 1)); 413 414 /* y-bitmap order is reversed, except on rushmore */ 415 if (!(priv->flags & ALPS_IS_RUSHMORE)) { 416 fields->mt[0].y = priv->y_max - fields->mt[0].y; 417 fields->mt[1].y = priv->y_max - fields->mt[1].y; 418 } 419 420 return fingers; 421 } 422 423 static void alps_set_slot(struct input_dev *dev, int slot, int x, int y) 424 { 425 input_mt_slot(dev, slot); 426 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); 427 input_report_abs(dev, ABS_MT_POSITION_X, x); 428 input_report_abs(dev, ABS_MT_POSITION_Y, y); 429 } 430 431 static void alps_report_mt_data(struct psmouse *psmouse, int n) 432 { 433 struct alps_data *priv = psmouse->private; 434 struct input_dev *dev = psmouse->dev; 435 struct alps_fields *f = &priv->f; 436 int i, slot[MAX_TOUCHES]; 437 438 input_mt_assign_slots(dev, slot, f->mt, n); 439 for (i = 0; i < n; i++) 440 alps_set_slot(dev, slot[i], f->mt[i].x, f->mt[i].y); 441 442 input_mt_sync_frame(dev); 443 } 444 445 static void alps_report_semi_mt_data(struct psmouse *psmouse, int fingers) 446 { 447 struct alps_data *priv = psmouse->private; 448 struct input_dev *dev = psmouse->dev; 449 struct alps_fields *f = &priv->f; 450 451 /* Use st data when we don't have mt data */ 452 if (fingers < 2) { 453 f->mt[0].x = f->st.x; 454 f->mt[0].y = f->st.y; 455 fingers = f->pressure > 0 ? 1 : 0; 456 } 457 458 alps_report_mt_data(psmouse, (fingers <= 2) ? fingers : 2); 459 460 input_mt_report_finger_count(dev, fingers); 461 462 input_report_key(dev, BTN_LEFT, f->left); 463 input_report_key(dev, BTN_RIGHT, f->right); 464 input_report_key(dev, BTN_MIDDLE, f->middle); 465 466 input_report_abs(dev, ABS_PRESSURE, f->pressure); 467 468 input_sync(dev); 469 } 470 471 static void alps_process_trackstick_packet_v3(struct psmouse *psmouse) 472 { 473 struct alps_data *priv = psmouse->private; 474 unsigned char *packet = psmouse->packet; 475 struct input_dev *dev = priv->dev2; 476 int x, y, z, left, right, middle; 477 478 /* Sanity check packet */ 479 if (!(packet[0] & 0x40)) { 480 psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n"); 481 return; 482 } 483 484 /* 485 * There's a special packet that seems to indicate the end 486 * of a stream of trackstick data. Filter these out. 487 */ 488 if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f) 489 return; 490 491 x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f)); 492 y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f)); 493 z = (packet[4] & 0x7c) >> 2; 494 495 /* 496 * The x and y values tend to be quite large, and when used 497 * alone the trackstick is difficult to use. Scale them down 498 * to compensate. 499 */ 500 x /= 8; 501 y /= 8; 502 503 input_report_rel(dev, REL_X, x); 504 input_report_rel(dev, REL_Y, -y); 505 506 /* 507 * Most ALPS models report the trackstick buttons in the touchpad 508 * packets, but a few report them here. No reliable way has been 509 * found to differentiate between the models upfront, so we enable 510 * the quirk in response to seeing a button press in the trackstick 511 * packet. 512 */ 513 left = packet[3] & 0x01; 514 right = packet[3] & 0x02; 515 middle = packet[3] & 0x04; 516 517 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) && 518 (left || right || middle)) 519 priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS; 520 521 if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) { 522 input_report_key(dev, BTN_LEFT, left); 523 input_report_key(dev, BTN_RIGHT, right); 524 input_report_key(dev, BTN_MIDDLE, middle); 525 } 526 527 input_sync(dev); 528 return; 529 } 530 531 static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p) 532 { 533 f->left = !!(p[3] & 0x01); 534 f->right = !!(p[3] & 0x02); 535 f->middle = !!(p[3] & 0x04); 536 537 f->ts_left = !!(p[3] & 0x10); 538 f->ts_right = !!(p[3] & 0x20); 539 f->ts_middle = !!(p[3] & 0x40); 540 } 541 542 static int alps_decode_pinnacle(struct alps_fields *f, unsigned char *p, 543 struct psmouse *psmouse) 544 { 545 f->first_mp = !!(p[4] & 0x40); 546 f->is_mp = !!(p[0] & 0x40); 547 548 f->fingers = (p[5] & 0x3) + 1; 549 f->x_map = ((p[4] & 0x7e) << 8) | 550 ((p[1] & 0x7f) << 2) | 551 ((p[0] & 0x30) >> 4); 552 f->y_map = ((p[3] & 0x70) << 4) | 553 ((p[2] & 0x7f) << 1) | 554 (p[4] & 0x01); 555 556 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | 557 ((p[0] & 0x30) >> 4); 558 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); 559 f->pressure = p[5] & 0x7f; 560 561 alps_decode_buttons_v3(f, p); 562 563 return 0; 564 } 565 566 static int alps_decode_rushmore(struct alps_fields *f, unsigned char *p, 567 struct psmouse *psmouse) 568 { 569 alps_decode_pinnacle(f, p, psmouse); 570 571 /* Rushmore's packet decode has a bit difference with Pinnacle's */ 572 f->is_mp = !!(p[5] & 0x40); 573 f->fingers = max((p[5] & 0x3), ((p[5] >> 2) & 0x3)) + 1; 574 f->x_map |= (p[5] & 0x10) << 11; 575 f->y_map |= (p[5] & 0x20) << 6; 576 577 return 0; 578 } 579 580 static int alps_decode_dolphin(struct alps_fields *f, unsigned char *p, 581 struct psmouse *psmouse) 582 { 583 u64 palm_data = 0; 584 struct alps_data *priv = psmouse->private; 585 586 f->first_mp = !!(p[0] & 0x02); 587 f->is_mp = !!(p[0] & 0x20); 588 589 if (!f->is_mp) { 590 f->st.x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7)); 591 f->st.y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3)); 592 f->pressure = (p[0] & 4) ? 0 : p[5] & 0x7f; 593 alps_decode_buttons_v3(f, p); 594 } else { 595 f->fingers = ((p[0] & 0x6) >> 1 | 596 (p[0] & 0x10) >> 2); 597 598 palm_data = (p[1] & 0x7f) | 599 ((p[2] & 0x7f) << 7) | 600 ((p[4] & 0x7f) << 14) | 601 ((p[5] & 0x7f) << 21) | 602 ((p[3] & 0x07) << 28) | 603 (((u64)p[3] & 0x70) << 27) | 604 (((u64)p[0] & 0x01) << 34); 605 606 /* Y-profile is stored in P(0) to p(n-1), n = y_bits; */ 607 f->y_map = palm_data & (BIT(priv->y_bits) - 1); 608 609 /* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */ 610 f->x_map = (palm_data >> priv->y_bits) & 611 (BIT(priv->x_bits) - 1); 612 } 613 614 return 0; 615 } 616 617 static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse) 618 { 619 struct alps_data *priv = psmouse->private; 620 unsigned char *packet = psmouse->packet; 621 struct input_dev *dev2 = priv->dev2; 622 struct alps_fields *f = &priv->f; 623 int fingers = 0; 624 625 memset(f, 0, sizeof(*f)); 626 627 priv->decode_fields(f, packet, psmouse); 628 629 /* 630 * There's no single feature of touchpad position and bitmap packets 631 * that can be used to distinguish between them. We rely on the fact 632 * that a bitmap packet should always follow a position packet with 633 * bit 6 of packet[4] set. 634 */ 635 if (priv->multi_packet) { 636 /* 637 * Sometimes a position packet will indicate a multi-packet 638 * sequence, but then what follows is another position 639 * packet. Check for this, and when it happens process the 640 * position packet as usual. 641 */ 642 if (f->is_mp) { 643 fingers = f->fingers; 644 if (priv->proto_version == ALPS_PROTO_V3) { 645 if (alps_process_bitmap(priv, f) == 0) 646 fingers = 0; /* Use st data */ 647 648 /* Now process position packet */ 649 priv->decode_fields(f, priv->multi_data, 650 psmouse); 651 } else { 652 /* 653 * Because Dolphin uses position packet's 654 * coordinate data as Pt1 and uses it to 655 * calculate Pt2, so we need to do position 656 * packet decode first. 657 */ 658 priv->decode_fields(f, priv->multi_data, 659 psmouse); 660 661 /* 662 * Since Dolphin's finger number is reliable, 663 * there is no need to compare with bmap_fn. 664 */ 665 alps_process_bitmap_dolphin(priv, f); 666 } 667 } else { 668 priv->multi_packet = 0; 669 } 670 } 671 672 /* 673 * Bit 6 of byte 0 is not usually set in position packets. The only 674 * times it seems to be set is in situations where the data is 675 * suspect anyway, e.g. a palm resting flat on the touchpad. Given 676 * this combined with the fact that this bit is useful for filtering 677 * out misidentified bitmap packets, we reject anything with this 678 * bit set. 679 */ 680 if (f->is_mp) 681 return; 682 683 if (!priv->multi_packet && f->first_mp) { 684 priv->multi_packet = 1; 685 memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); 686 return; 687 } 688 689 priv->multi_packet = 0; 690 691 /* 692 * Sometimes the hardware sends a single packet with z = 0 693 * in the middle of a stream. Real releases generate packets 694 * with x, y, and z all zero, so these seem to be flukes. 695 * Ignore them. 696 */ 697 if (f->st.x && f->st.y && !f->pressure) 698 return; 699 700 alps_report_semi_mt_data(psmouse, fingers); 701 702 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) { 703 input_report_key(dev2, BTN_LEFT, f->ts_left); 704 input_report_key(dev2, BTN_RIGHT, f->ts_right); 705 input_report_key(dev2, BTN_MIDDLE, f->ts_middle); 706 input_sync(dev2); 707 } 708 } 709 710 static void alps_process_packet_v3(struct psmouse *psmouse) 711 { 712 unsigned char *packet = psmouse->packet; 713 714 /* 715 * v3 protocol packets come in three types, two representing 716 * touchpad data and one representing trackstick data. 717 * Trackstick packets seem to be distinguished by always 718 * having 0x3f in the last byte. This value has never been 719 * observed in the last byte of either of the other types 720 * of packets. 721 */ 722 if (packet[5] == 0x3f) { 723 alps_process_trackstick_packet_v3(psmouse); 724 return; 725 } 726 727 alps_process_touchpad_packet_v3_v5(psmouse); 728 } 729 730 static void alps_process_packet_v6(struct psmouse *psmouse) 731 { 732 struct alps_data *priv = psmouse->private; 733 unsigned char *packet = psmouse->packet; 734 struct input_dev *dev = psmouse->dev; 735 struct input_dev *dev2 = priv->dev2; 736 int x, y, z, left, right, middle; 737 738 /* 739 * We can use Byte5 to distinguish if the packet is from Touchpad 740 * or Trackpoint. 741 * Touchpad: 0 - 0x7E 742 * Trackpoint: 0x7F 743 */ 744 if (packet[5] == 0x7F) { 745 /* It should be a DualPoint when received Trackpoint packet */ 746 if (!(priv->flags & ALPS_DUALPOINT)) 747 return; 748 749 /* Trackpoint packet */ 750 x = packet[1] | ((packet[3] & 0x20) << 2); 751 y = packet[2] | ((packet[3] & 0x40) << 1); 752 z = packet[4]; 753 left = packet[3] & 0x01; 754 right = packet[3] & 0x02; 755 middle = packet[3] & 0x04; 756 757 /* To prevent the cursor jump when finger lifted */ 758 if (x == 0x7F && y == 0x7F && z == 0x7F) 759 x = y = z = 0; 760 761 /* Divide 4 since trackpoint's speed is too fast */ 762 input_report_rel(dev2, REL_X, (char)x / 4); 763 input_report_rel(dev2, REL_Y, -((char)y / 4)); 764 765 input_report_key(dev2, BTN_LEFT, left); 766 input_report_key(dev2, BTN_RIGHT, right); 767 input_report_key(dev2, BTN_MIDDLE, middle); 768 769 input_sync(dev2); 770 return; 771 } 772 773 /* Touchpad packet */ 774 x = packet[1] | ((packet[3] & 0x78) << 4); 775 y = packet[2] | ((packet[4] & 0x78) << 4); 776 z = packet[5]; 777 left = packet[3] & 0x01; 778 right = packet[3] & 0x02; 779 780 if (z > 30) 781 input_report_key(dev, BTN_TOUCH, 1); 782 if (z < 25) 783 input_report_key(dev, BTN_TOUCH, 0); 784 785 if (z > 0) { 786 input_report_abs(dev, ABS_X, x); 787 input_report_abs(dev, ABS_Y, y); 788 } 789 790 input_report_abs(dev, ABS_PRESSURE, z); 791 input_report_key(dev, BTN_TOOL_FINGER, z > 0); 792 793 /* v6 touchpad does not have middle button */ 794 input_report_key(dev, BTN_LEFT, left); 795 input_report_key(dev, BTN_RIGHT, right); 796 797 input_sync(dev); 798 } 799 800 static void alps_process_packet_v4(struct psmouse *psmouse) 801 { 802 struct alps_data *priv = psmouse->private; 803 unsigned char *packet = psmouse->packet; 804 struct alps_fields *f = &priv->f; 805 int offset; 806 807 /* 808 * v4 has a 6-byte encoding for bitmap data, but this data is 809 * broken up between 3 normal packets. Use priv->multi_packet to 810 * track our position in the bitmap packet. 811 */ 812 if (packet[6] & 0x40) { 813 /* sync, reset position */ 814 priv->multi_packet = 0; 815 } 816 817 if (WARN_ON_ONCE(priv->multi_packet > 2)) 818 return; 819 820 offset = 2 * priv->multi_packet; 821 priv->multi_data[offset] = packet[6]; 822 priv->multi_data[offset + 1] = packet[7]; 823 824 if (++priv->multi_packet > 2) { 825 priv->multi_packet = 0; 826 827 f->x_map = ((priv->multi_data[2] & 0x1f) << 10) | 828 ((priv->multi_data[3] & 0x60) << 3) | 829 ((priv->multi_data[0] & 0x3f) << 2) | 830 ((priv->multi_data[1] & 0x60) >> 5); 831 f->y_map = ((priv->multi_data[5] & 0x01) << 10) | 832 ((priv->multi_data[3] & 0x1f) << 5) | 833 (priv->multi_data[1] & 0x1f); 834 835 f->fingers = alps_process_bitmap(priv, f); 836 } 837 838 f->left = !!(packet[4] & 0x01); 839 f->right = !!(packet[4] & 0x02); 840 841 f->st.x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) | 842 ((packet[0] & 0x30) >> 4); 843 f->st.y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f); 844 f->pressure = packet[5] & 0x7f; 845 846 alps_report_semi_mt_data(psmouse, f->fingers); 847 } 848 849 static bool alps_is_valid_package_v7(struct psmouse *psmouse) 850 { 851 switch (psmouse->pktcnt) { 852 case 3: 853 return (psmouse->packet[2] & 0x40) == 0x40; 854 case 4: 855 return (psmouse->packet[3] & 0x48) == 0x48; 856 case 6: 857 return (psmouse->packet[5] & 0x40) == 0x00; 858 } 859 return true; 860 } 861 862 static unsigned char alps_get_packet_id_v7(char *byte) 863 { 864 unsigned char packet_id; 865 866 if (byte[4] & 0x40) 867 packet_id = V7_PACKET_ID_TWO; 868 else if (byte[4] & 0x01) 869 packet_id = V7_PACKET_ID_MULTI; 870 else if ((byte[0] & 0x10) && !(byte[4] & 0x43)) 871 packet_id = V7_PACKET_ID_NEW; 872 else if (byte[1] == 0x00 && byte[4] == 0x00) 873 packet_id = V7_PACKET_ID_IDLE; 874 else 875 packet_id = V7_PACKET_ID_UNKNOWN; 876 877 return packet_id; 878 } 879 880 static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt, 881 unsigned char *pkt, 882 unsigned char pkt_id) 883 { 884 mt[0].x = ((pkt[2] & 0x80) << 4); 885 mt[0].x |= ((pkt[2] & 0x3F) << 5); 886 mt[0].x |= ((pkt[3] & 0x30) >> 1); 887 mt[0].x |= (pkt[3] & 0x07); 888 mt[0].y = (pkt[1] << 3) | (pkt[0] & 0x07); 889 890 mt[1].x = ((pkt[3] & 0x80) << 4); 891 mt[1].x |= ((pkt[4] & 0x80) << 3); 892 mt[1].x |= ((pkt[4] & 0x3F) << 4); 893 mt[1].y = ((pkt[5] & 0x80) << 3); 894 mt[1].y |= ((pkt[5] & 0x3F) << 4); 895 896 switch (pkt_id) { 897 case V7_PACKET_ID_TWO: 898 mt[1].x &= ~0x000F; 899 mt[1].y |= 0x000F; 900 break; 901 902 case V7_PACKET_ID_MULTI: 903 mt[1].x &= ~0x003F; 904 mt[1].y &= ~0x0020; 905 mt[1].y |= ((pkt[4] & 0x02) << 4); 906 mt[1].y |= 0x001F; 907 break; 908 909 case V7_PACKET_ID_NEW: 910 mt[1].x &= ~0x003F; 911 mt[1].x |= (pkt[0] & 0x20); 912 mt[1].y |= 0x000F; 913 break; 914 } 915 916 mt[0].y = 0x7FF - mt[0].y; 917 mt[1].y = 0x7FF - mt[1].y; 918 } 919 920 static int alps_get_mt_count(struct input_mt_pos *mt) 921 { 922 int i; 923 924 for (i = 0; i < MAX_TOUCHES && mt[i].x != 0 && mt[i].y != 0; i++) 925 /* empty */; 926 927 return i; 928 } 929 930 static int alps_decode_packet_v7(struct alps_fields *f, 931 unsigned char *p, 932 struct psmouse *psmouse) 933 { 934 unsigned char pkt_id; 935 936 pkt_id = alps_get_packet_id_v7(p); 937 if (pkt_id == V7_PACKET_ID_IDLE) 938 return 0; 939 if (pkt_id == V7_PACKET_ID_UNKNOWN) 940 return -1; 941 942 alps_get_finger_coordinate_v7(f->mt, p, pkt_id); 943 944 if (pkt_id == V7_PACKET_ID_TWO || pkt_id == V7_PACKET_ID_MULTI) { 945 f->left = (p[0] & 0x80) >> 7; 946 f->right = (p[0] & 0x20) >> 5; 947 f->middle = (p[0] & 0x10) >> 4; 948 } 949 950 if (pkt_id == V7_PACKET_ID_TWO) 951 f->fingers = alps_get_mt_count(f->mt); 952 else if (pkt_id == V7_PACKET_ID_MULTI) 953 f->fingers = 3 + (p[5] & 0x03); 954 955 return 0; 956 } 957 958 static void alps_process_trackstick_packet_v7(struct psmouse *psmouse) 959 { 960 struct alps_data *priv = psmouse->private; 961 unsigned char *packet = psmouse->packet; 962 struct input_dev *dev2 = priv->dev2; 963 int x, y, z, left, right, middle; 964 965 /* 966 * b7 b6 b5 b4 b3 b2 b1 b0 967 * Byte0 0 1 0 0 1 0 0 0 968 * Byte1 1 1 * * 1 M R L 969 * Byte2 X7 1 X5 X4 X3 X2 X1 X0 970 * Byte3 Z6 1 Y6 X6 1 Y2 Y1 Y0 971 * Byte4 Y7 0 Y5 Y4 Y3 1 1 0 972 * Byte5 T&P 0 Z5 Z4 Z3 Z2 Z1 Z0 973 * M / R / L: Middle / Right / Left button 974 */ 975 976 x = ((packet[2] & 0xbf)) | ((packet[3] & 0x10) << 2); 977 y = (packet[3] & 0x07) | (packet[4] & 0xb8) | 978 ((packet[3] & 0x20) << 1); 979 z = (packet[5] & 0x3f) | ((packet[3] & 0x80) >> 1); 980 981 left = (packet[1] & 0x01); 982 right = (packet[1] & 0x02) >> 1; 983 middle = (packet[1] & 0x04) >> 2; 984 985 /* Divide 2 since trackpoint's speed is too fast */ 986 input_report_rel(dev2, REL_X, (char)x / 2); 987 input_report_rel(dev2, REL_Y, -((char)y / 2)); 988 989 input_report_key(dev2, BTN_LEFT, left); 990 input_report_key(dev2, BTN_RIGHT, right); 991 input_report_key(dev2, BTN_MIDDLE, middle); 992 993 input_sync(dev2); 994 } 995 996 static void alps_process_touchpad_packet_v7(struct psmouse *psmouse) 997 { 998 struct alps_data *priv = psmouse->private; 999 struct input_dev *dev = psmouse->dev; 1000 struct alps_fields *f = &priv->f; 1001 1002 memset(f, 0, sizeof(*f)); 1003 1004 if (priv->decode_fields(f, psmouse->packet, psmouse)) 1005 return; 1006 1007 alps_report_mt_data(psmouse, alps_get_mt_count(f->mt)); 1008 1009 input_mt_report_finger_count(dev, f->fingers); 1010 1011 input_report_key(dev, BTN_LEFT, f->left); 1012 input_report_key(dev, BTN_RIGHT, f->right); 1013 input_report_key(dev, BTN_MIDDLE, f->middle); 1014 1015 input_sync(dev); 1016 } 1017 1018 static void alps_process_packet_v7(struct psmouse *psmouse) 1019 { 1020 unsigned char *packet = psmouse->packet; 1021 1022 if (packet[0] == 0x48 && (packet[4] & 0x47) == 0x06) 1023 alps_process_trackstick_packet_v7(psmouse); 1024 else 1025 alps_process_touchpad_packet_v7(psmouse); 1026 } 1027 1028 static void alps_report_bare_ps2_packet(struct psmouse *psmouse, 1029 unsigned char packet[], 1030 bool report_buttons) 1031 { 1032 struct alps_data *priv = psmouse->private; 1033 struct input_dev *dev2 = priv->dev2; 1034 1035 if (report_buttons) 1036 alps_report_buttons(psmouse, dev2, psmouse->dev, 1037 packet[0] & 1, packet[0] & 2, packet[0] & 4); 1038 1039 input_report_rel(dev2, REL_X, 1040 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0); 1041 input_report_rel(dev2, REL_Y, 1042 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0); 1043 1044 input_sync(dev2); 1045 } 1046 1047 static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse) 1048 { 1049 struct alps_data *priv = psmouse->private; 1050 1051 if (psmouse->pktcnt < 6) 1052 return PSMOUSE_GOOD_DATA; 1053 1054 if (psmouse->pktcnt == 6) { 1055 /* 1056 * Start a timer to flush the packet if it ends up last 1057 * 6-byte packet in the stream. Timer needs to fire 1058 * psmouse core times out itself. 20 ms should be enough 1059 * to decide if we are getting more data or not. 1060 */ 1061 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20)); 1062 return PSMOUSE_GOOD_DATA; 1063 } 1064 1065 del_timer(&priv->timer); 1066 1067 if (psmouse->packet[6] & 0x80) { 1068 1069 /* 1070 * Highest bit is set - that means we either had 1071 * complete ALPS packet and this is start of the 1072 * next packet or we got garbage. 1073 */ 1074 1075 if (((psmouse->packet[3] | 1076 psmouse->packet[4] | 1077 psmouse->packet[5]) & 0x80) || 1078 (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) { 1079 psmouse_dbg(psmouse, 1080 "refusing packet %4ph (suspected interleaved ps/2)\n", 1081 psmouse->packet + 3); 1082 return PSMOUSE_BAD_DATA; 1083 } 1084 1085 priv->process_packet(psmouse); 1086 1087 /* Continue with the next packet */ 1088 psmouse->packet[0] = psmouse->packet[6]; 1089 psmouse->pktcnt = 1; 1090 1091 } else { 1092 1093 /* 1094 * High bit is 0 - that means that we indeed got a PS/2 1095 * packet in the middle of ALPS packet. 1096 * 1097 * There is also possibility that we got 6-byte ALPS 1098 * packet followed by 3-byte packet from trackpoint. We 1099 * can not distinguish between these 2 scenarios but 1100 * because the latter is unlikely to happen in course of 1101 * normal operation (user would need to press all 1102 * buttons on the pad and start moving trackpoint 1103 * without touching the pad surface) we assume former. 1104 * Even if we are wrong the wost thing that would happen 1105 * the cursor would jump but we should not get protocol 1106 * de-synchronization. 1107 */ 1108 1109 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3], 1110 false); 1111 1112 /* 1113 * Continue with the standard ALPS protocol handling, 1114 * but make sure we won't process it as an interleaved 1115 * packet again, which may happen if all buttons are 1116 * pressed. To avoid this let's reset the 4th bit which 1117 * is normally 1. 1118 */ 1119 psmouse->packet[3] = psmouse->packet[6] & 0xf7; 1120 psmouse->pktcnt = 4; 1121 } 1122 1123 return PSMOUSE_GOOD_DATA; 1124 } 1125 1126 static void alps_flush_packet(unsigned long data) 1127 { 1128 struct psmouse *psmouse = (struct psmouse *)data; 1129 struct alps_data *priv = psmouse->private; 1130 1131 serio_pause_rx(psmouse->ps2dev.serio); 1132 1133 if (psmouse->pktcnt == psmouse->pktsize) { 1134 1135 /* 1136 * We did not any more data in reasonable amount of time. 1137 * Validate the last 3 bytes and process as a standard 1138 * ALPS packet. 1139 */ 1140 if ((psmouse->packet[3] | 1141 psmouse->packet[4] | 1142 psmouse->packet[5]) & 0x80) { 1143 psmouse_dbg(psmouse, 1144 "refusing packet %3ph (suspected interleaved ps/2)\n", 1145 psmouse->packet + 3); 1146 } else { 1147 priv->process_packet(psmouse); 1148 } 1149 psmouse->pktcnt = 0; 1150 } 1151 1152 serio_continue_rx(psmouse->ps2dev.serio); 1153 } 1154 1155 static psmouse_ret_t alps_process_byte(struct psmouse *psmouse) 1156 { 1157 struct alps_data *priv = psmouse->private; 1158 1159 /* 1160 * Check if we are dealing with a bare PS/2 packet, presumably from 1161 * a device connected to the external PS/2 port. Because bare PS/2 1162 * protocol does not have enough constant bits to self-synchronize 1163 * properly we only do this if the device is fully synchronized. 1164 */ 1165 if (!psmouse->out_of_sync_cnt && (psmouse->packet[0] & 0xc8) == 0x08) { 1166 if (psmouse->pktcnt == 3) { 1167 alps_report_bare_ps2_packet(psmouse, psmouse->packet, 1168 true); 1169 return PSMOUSE_FULL_PACKET; 1170 } 1171 return PSMOUSE_GOOD_DATA; 1172 } 1173 1174 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */ 1175 1176 if ((priv->flags & ALPS_PS2_INTERLEAVED) && 1177 psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) { 1178 return alps_handle_interleaved_ps2(psmouse); 1179 } 1180 1181 if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) { 1182 psmouse_dbg(psmouse, 1183 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n", 1184 psmouse->packet[0], priv->mask0, priv->byte0); 1185 return PSMOUSE_BAD_DATA; 1186 } 1187 1188 /* Bytes 2 - pktsize should have 0 in the highest bit */ 1189 if (priv->proto_version < ALPS_PROTO_V5 && 1190 psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize && 1191 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) { 1192 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1193 psmouse->pktcnt - 1, 1194 psmouse->packet[psmouse->pktcnt - 1]); 1195 1196 if (priv->proto_version == ALPS_PROTO_V3 && 1197 psmouse->pktcnt == psmouse->pktsize) { 1198 /* 1199 * Some Dell boxes, such as Latitude E6440 or E7440 1200 * with closed lid, quite often smash last byte of 1201 * otherwise valid packet with 0xff. Given that the 1202 * next packet is very likely to be valid let's 1203 * report PSMOUSE_FULL_PACKET but not process data, 1204 * rather than reporting PSMOUSE_BAD_DATA and 1205 * filling the logs. 1206 */ 1207 return PSMOUSE_FULL_PACKET; 1208 } 1209 1210 return PSMOUSE_BAD_DATA; 1211 } 1212 1213 if (priv->proto_version == ALPS_PROTO_V7 && 1214 !alps_is_valid_package_v7(psmouse)) { 1215 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1216 psmouse->pktcnt - 1, 1217 psmouse->packet[psmouse->pktcnt - 1]); 1218 return PSMOUSE_BAD_DATA; 1219 } 1220 1221 if (psmouse->pktcnt == psmouse->pktsize) { 1222 priv->process_packet(psmouse); 1223 return PSMOUSE_FULL_PACKET; 1224 } 1225 1226 return PSMOUSE_GOOD_DATA; 1227 } 1228 1229 static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble) 1230 { 1231 struct ps2dev *ps2dev = &psmouse->ps2dev; 1232 struct alps_data *priv = psmouse->private; 1233 int command; 1234 unsigned char *param; 1235 unsigned char dummy[4]; 1236 1237 BUG_ON(nibble > 0xf); 1238 1239 command = priv->nibble_commands[nibble].command; 1240 param = (command & 0x0f00) ? 1241 dummy : (unsigned char *)&priv->nibble_commands[nibble].data; 1242 1243 if (ps2_command(ps2dev, param, command)) 1244 return -1; 1245 1246 return 0; 1247 } 1248 1249 static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr) 1250 { 1251 struct ps2dev *ps2dev = &psmouse->ps2dev; 1252 struct alps_data *priv = psmouse->private; 1253 int i, nibble; 1254 1255 if (ps2_command(ps2dev, NULL, priv->addr_command)) 1256 return -1; 1257 1258 for (i = 12; i >= 0; i -= 4) { 1259 nibble = (addr >> i) & 0xf; 1260 if (alps_command_mode_send_nibble(psmouse, nibble)) 1261 return -1; 1262 } 1263 1264 return 0; 1265 } 1266 1267 static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1268 { 1269 struct ps2dev *ps2dev = &psmouse->ps2dev; 1270 unsigned char param[4]; 1271 1272 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1273 return -1; 1274 1275 /* 1276 * The address being read is returned in the first two bytes 1277 * of the result. Check that this address matches the expected 1278 * address. 1279 */ 1280 if (addr != ((param[0] << 8) | param[1])) 1281 return -1; 1282 1283 return param[2]; 1284 } 1285 1286 static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1287 { 1288 if (alps_command_mode_set_addr(psmouse, addr)) 1289 return -1; 1290 return __alps_command_mode_read_reg(psmouse, addr); 1291 } 1292 1293 static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value) 1294 { 1295 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf)) 1296 return -1; 1297 if (alps_command_mode_send_nibble(psmouse, value & 0xf)) 1298 return -1; 1299 return 0; 1300 } 1301 1302 static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr, 1303 u8 value) 1304 { 1305 if (alps_command_mode_set_addr(psmouse, addr)) 1306 return -1; 1307 return __alps_command_mode_write_reg(psmouse, value); 1308 } 1309 1310 static int alps_rpt_cmd(struct psmouse *psmouse, int init_command, 1311 int repeated_command, unsigned char *param) 1312 { 1313 struct ps2dev *ps2dev = &psmouse->ps2dev; 1314 1315 param[0] = 0; 1316 if (init_command && ps2_command(ps2dev, param, init_command)) 1317 return -EIO; 1318 1319 if (ps2_command(ps2dev, NULL, repeated_command) || 1320 ps2_command(ps2dev, NULL, repeated_command) || 1321 ps2_command(ps2dev, NULL, repeated_command)) 1322 return -EIO; 1323 1324 param[0] = param[1] = param[2] = 0xff; 1325 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1326 return -EIO; 1327 1328 psmouse_dbg(psmouse, "%2.2X report: %3ph\n", 1329 repeated_command, param); 1330 return 0; 1331 } 1332 1333 static bool alps_check_valid_firmware_id(unsigned char id[]) 1334 { 1335 if (id[0] == 0x73) 1336 return true; 1337 1338 if (id[0] == 0x88 && 1339 (id[1] == 0x07 || 1340 id[1] == 0x08 || 1341 (id[1] & 0xf0) == 0xb0 || 1342 (id[1] & 0xf0) == 0xc0)) { 1343 return true; 1344 } 1345 1346 return false; 1347 } 1348 1349 static int alps_enter_command_mode(struct psmouse *psmouse) 1350 { 1351 unsigned char param[4]; 1352 1353 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) { 1354 psmouse_err(psmouse, "failed to enter command mode\n"); 1355 return -1; 1356 } 1357 1358 if (!alps_check_valid_firmware_id(param)) { 1359 psmouse_dbg(psmouse, 1360 "unknown response while entering command mode\n"); 1361 return -1; 1362 } 1363 return 0; 1364 } 1365 1366 static inline int alps_exit_command_mode(struct psmouse *psmouse) 1367 { 1368 struct ps2dev *ps2dev = &psmouse->ps2dev; 1369 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) 1370 return -1; 1371 return 0; 1372 } 1373 1374 /* 1375 * For DualPoint devices select the device that should respond to 1376 * subsequent commands. It looks like glidepad is behind stickpointer, 1377 * I'd thought it would be other way around... 1378 */ 1379 static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable) 1380 { 1381 struct ps2dev *ps2dev = &psmouse->ps2dev; 1382 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11; 1383 1384 if (ps2_command(ps2dev, NULL, cmd) || 1385 ps2_command(ps2dev, NULL, cmd) || 1386 ps2_command(ps2dev, NULL, cmd) || 1387 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1388 return -1; 1389 1390 /* we may get 3 more bytes, just ignore them */ 1391 ps2_drain(ps2dev, 3, 100); 1392 1393 return 0; 1394 } 1395 1396 static int alps_absolute_mode_v1_v2(struct psmouse *psmouse) 1397 { 1398 struct ps2dev *ps2dev = &psmouse->ps2dev; 1399 1400 /* Try ALPS magic knock - 4 disable before enable */ 1401 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1402 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1403 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1404 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1405 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) 1406 return -1; 1407 1408 /* 1409 * Switch mouse to poll (remote) mode so motion data will not 1410 * get in our way 1411 */ 1412 return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL); 1413 } 1414 1415 static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word) 1416 { 1417 int i, nibble; 1418 1419 /* 1420 * b0-b11 are valid bits, send sequence is inverse. 1421 * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1 1422 */ 1423 for (i = 0; i <= 8; i += 4) { 1424 nibble = (word >> i) & 0xf; 1425 if (alps_command_mode_send_nibble(psmouse, nibble)) 1426 return -1; 1427 } 1428 1429 return 0; 1430 } 1431 1432 static int alps_monitor_mode_write_reg(struct psmouse *psmouse, 1433 u16 addr, u16 value) 1434 { 1435 struct ps2dev *ps2dev = &psmouse->ps2dev; 1436 1437 /* 0x0A0 is the command to write the word */ 1438 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) || 1439 alps_monitor_mode_send_word(psmouse, 0x0A0) || 1440 alps_monitor_mode_send_word(psmouse, addr) || 1441 alps_monitor_mode_send_word(psmouse, value) || 1442 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1443 return -1; 1444 1445 return 0; 1446 } 1447 1448 static int alps_monitor_mode(struct psmouse *psmouse, bool enable) 1449 { 1450 struct ps2dev *ps2dev = &psmouse->ps2dev; 1451 1452 if (enable) { 1453 /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */ 1454 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 1455 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) || 1456 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1457 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1458 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1459 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1460 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1461 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO)) 1462 return -1; 1463 } else { 1464 /* EC to exit monitor mode */ 1465 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP)) 1466 return -1; 1467 } 1468 1469 return 0; 1470 } 1471 1472 static int alps_absolute_mode_v6(struct psmouse *psmouse) 1473 { 1474 u16 reg_val = 0x181; 1475 int ret = -1; 1476 1477 /* enter monitor mode, to write the register */ 1478 if (alps_monitor_mode(psmouse, true)) 1479 return -1; 1480 1481 ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val); 1482 1483 if (alps_monitor_mode(psmouse, false)) 1484 ret = -1; 1485 1486 return ret; 1487 } 1488 1489 static int alps_get_status(struct psmouse *psmouse, char *param) 1490 { 1491 /* Get status: 0xF5 0xF5 0xF5 0xE9 */ 1492 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param)) 1493 return -1; 1494 1495 return 0; 1496 } 1497 1498 /* 1499 * Turn touchpad tapping on or off. The sequences are: 1500 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable, 1501 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable. 1502 * My guess that 0xE9 (GetInfo) is here as a sync point. 1503 * For models that also have stickpointer (DualPoints) its tapping 1504 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but 1505 * we don't fiddle with it. 1506 */ 1507 static int alps_tap_mode(struct psmouse *psmouse, int enable) 1508 { 1509 struct ps2dev *ps2dev = &psmouse->ps2dev; 1510 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES; 1511 unsigned char tap_arg = enable ? 0x0A : 0x00; 1512 unsigned char param[4]; 1513 1514 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) || 1515 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1516 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1517 ps2_command(ps2dev, &tap_arg, cmd)) 1518 return -1; 1519 1520 if (alps_get_status(psmouse, param)) 1521 return -1; 1522 1523 return 0; 1524 } 1525 1526 /* 1527 * alps_poll() - poll the touchpad for current motion packet. 1528 * Used in resync. 1529 */ 1530 static int alps_poll(struct psmouse *psmouse) 1531 { 1532 struct alps_data *priv = psmouse->private; 1533 unsigned char buf[sizeof(psmouse->packet)]; 1534 bool poll_failed; 1535 1536 if (priv->flags & ALPS_PASS) 1537 alps_passthrough_mode_v2(psmouse, true); 1538 1539 poll_failed = ps2_command(&psmouse->ps2dev, buf, 1540 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0; 1541 1542 if (priv->flags & ALPS_PASS) 1543 alps_passthrough_mode_v2(psmouse, false); 1544 1545 if (poll_failed || (buf[0] & priv->mask0) != priv->byte0) 1546 return -1; 1547 1548 if ((psmouse->badbyte & 0xc8) == 0x08) { 1549 /* 1550 * Poll the track stick ... 1551 */ 1552 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8))) 1553 return -1; 1554 } 1555 1556 memcpy(psmouse->packet, buf, sizeof(buf)); 1557 return 0; 1558 } 1559 1560 static int alps_hw_init_v1_v2(struct psmouse *psmouse) 1561 { 1562 struct alps_data *priv = psmouse->private; 1563 1564 if ((priv->flags & ALPS_PASS) && 1565 alps_passthrough_mode_v2(psmouse, true)) { 1566 return -1; 1567 } 1568 1569 if (alps_tap_mode(psmouse, true)) { 1570 psmouse_warn(psmouse, "Failed to enable hardware tapping\n"); 1571 return -1; 1572 } 1573 1574 if (alps_absolute_mode_v1_v2(psmouse)) { 1575 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 1576 return -1; 1577 } 1578 1579 if ((priv->flags & ALPS_PASS) && 1580 alps_passthrough_mode_v2(psmouse, false)) { 1581 return -1; 1582 } 1583 1584 /* ALPS needs stream mode, otherwise it won't report any data */ 1585 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) { 1586 psmouse_err(psmouse, "Failed to enable stream mode\n"); 1587 return -1; 1588 } 1589 1590 return 0; 1591 } 1592 1593 static int alps_hw_init_v6(struct psmouse *psmouse) 1594 { 1595 unsigned char param[2] = {0xC8, 0x14}; 1596 1597 /* Enter passthrough mode to let trackpoint enter 6byte raw mode */ 1598 if (alps_passthrough_mode_v2(psmouse, true)) 1599 return -1; 1600 1601 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1602 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1603 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1604 ps2_command(&psmouse->ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 1605 ps2_command(&psmouse->ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 1606 return -1; 1607 1608 if (alps_passthrough_mode_v2(psmouse, false)) 1609 return -1; 1610 1611 if (alps_absolute_mode_v6(psmouse)) { 1612 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 1613 return -1; 1614 } 1615 1616 return 0; 1617 } 1618 1619 /* 1620 * Enable or disable passthrough mode to the trackstick. 1621 */ 1622 static int alps_passthrough_mode_v3(struct psmouse *psmouse, 1623 int reg_base, bool enable) 1624 { 1625 int reg_val, ret = -1; 1626 1627 if (alps_enter_command_mode(psmouse)) 1628 return -1; 1629 1630 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008); 1631 if (reg_val == -1) 1632 goto error; 1633 1634 if (enable) 1635 reg_val |= 0x01; 1636 else 1637 reg_val &= ~0x01; 1638 1639 ret = __alps_command_mode_write_reg(psmouse, reg_val); 1640 1641 error: 1642 if (alps_exit_command_mode(psmouse)) 1643 ret = -1; 1644 return ret; 1645 } 1646 1647 /* Must be in command mode when calling this function */ 1648 static int alps_absolute_mode_v3(struct psmouse *psmouse) 1649 { 1650 int reg_val; 1651 1652 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 1653 if (reg_val == -1) 1654 return -1; 1655 1656 reg_val |= 0x06; 1657 if (__alps_command_mode_write_reg(psmouse, reg_val)) 1658 return -1; 1659 1660 return 0; 1661 } 1662 1663 static int alps_probe_trackstick_v3(struct psmouse *psmouse, int reg_base) 1664 { 1665 int ret = -EIO, reg_val; 1666 1667 if (alps_enter_command_mode(psmouse)) 1668 goto error; 1669 1670 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08); 1671 if (reg_val == -1) 1672 goto error; 1673 1674 /* bit 7: trackstick is present */ 1675 ret = reg_val & 0x80 ? 0 : -ENODEV; 1676 1677 error: 1678 alps_exit_command_mode(psmouse); 1679 return ret; 1680 } 1681 1682 static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base) 1683 { 1684 struct ps2dev *ps2dev = &psmouse->ps2dev; 1685 int ret = 0; 1686 unsigned char param[4]; 1687 1688 if (alps_passthrough_mode_v3(psmouse, reg_base, true)) 1689 return -EIO; 1690 1691 /* 1692 * E7 report for the trackstick 1693 * 1694 * There have been reports of failures to seem to trace back 1695 * to the above trackstick check failing. When these occur 1696 * this E7 report fails, so when that happens we continue 1697 * with the assumption that there isn't a trackstick after 1698 * all. 1699 */ 1700 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) { 1701 psmouse_warn(psmouse, "trackstick E7 report failed\n"); 1702 ret = -ENODEV; 1703 } else { 1704 psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param); 1705 1706 /* 1707 * Not sure what this does, but it is absolutely 1708 * essential. Without it, the touchpad does not 1709 * work at all and the trackstick just emits normal 1710 * PS/2 packets. 1711 */ 1712 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1713 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1714 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1715 alps_command_mode_send_nibble(psmouse, 0x9) || 1716 alps_command_mode_send_nibble(psmouse, 0x4)) { 1717 psmouse_err(psmouse, 1718 "Error sending magic E6 sequence\n"); 1719 ret = -EIO; 1720 goto error; 1721 } 1722 1723 /* 1724 * This ensures the trackstick packets are in the format 1725 * supported by this driver. If bit 1 isn't set the packet 1726 * format is different. 1727 */ 1728 if (alps_enter_command_mode(psmouse) || 1729 alps_command_mode_write_reg(psmouse, 1730 reg_base + 0x08, 0x82) || 1731 alps_exit_command_mode(psmouse)) 1732 ret = -EIO; 1733 } 1734 1735 error: 1736 if (alps_passthrough_mode_v3(psmouse, reg_base, false)) 1737 ret = -EIO; 1738 1739 return ret; 1740 } 1741 1742 static int alps_hw_init_v3(struct psmouse *psmouse) 1743 { 1744 struct ps2dev *ps2dev = &psmouse->ps2dev; 1745 int reg_val; 1746 unsigned char param[4]; 1747 1748 reg_val = alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE); 1749 if (reg_val == -EIO) 1750 goto error; 1751 1752 if (reg_val == 0 && 1753 alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO) 1754 goto error; 1755 1756 if (alps_enter_command_mode(psmouse) || 1757 alps_absolute_mode_v3(psmouse)) { 1758 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 1759 goto error; 1760 } 1761 1762 reg_val = alps_command_mode_read_reg(psmouse, 0x0006); 1763 if (reg_val == -1) 1764 goto error; 1765 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 1766 goto error; 1767 1768 reg_val = alps_command_mode_read_reg(psmouse, 0x0007); 1769 if (reg_val == -1) 1770 goto error; 1771 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 1772 goto error; 1773 1774 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1) 1775 goto error; 1776 if (__alps_command_mode_write_reg(psmouse, 0x04)) 1777 goto error; 1778 1779 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1) 1780 goto error; 1781 if (__alps_command_mode_write_reg(psmouse, 0x03)) 1782 goto error; 1783 1784 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1) 1785 goto error; 1786 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03)) 1787 goto error; 1788 1789 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1) 1790 goto error; 1791 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04)) 1792 goto error; 1793 1794 alps_exit_command_mode(psmouse); 1795 1796 /* Set rate and enable data reporting */ 1797 param[0] = 0x64; 1798 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 1799 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 1800 psmouse_err(psmouse, "Failed to enable data reporting\n"); 1801 return -1; 1802 } 1803 1804 return 0; 1805 1806 error: 1807 /* 1808 * Leaving the touchpad in command mode will essentially render 1809 * it unusable until the machine reboots, so exit it here just 1810 * to be safe 1811 */ 1812 alps_exit_command_mode(psmouse); 1813 return -1; 1814 } 1815 1816 static int alps_get_v3_v7_resolution(struct psmouse *psmouse, int reg_pitch) 1817 { 1818 int reg, x_pitch, y_pitch, x_electrode, y_electrode, x_phys, y_phys; 1819 struct alps_data *priv = psmouse->private; 1820 1821 reg = alps_command_mode_read_reg(psmouse, reg_pitch); 1822 if (reg < 0) 1823 return reg; 1824 1825 x_pitch = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ 1826 x_pitch = 50 + 2 * x_pitch; /* In 0.1 mm units */ 1827 1828 y_pitch = (char)reg >> 4; /* sign extend upper 4 bits */ 1829 y_pitch = 36 + 2 * y_pitch; /* In 0.1 mm units */ 1830 1831 reg = alps_command_mode_read_reg(psmouse, reg_pitch + 1); 1832 if (reg < 0) 1833 return reg; 1834 1835 x_electrode = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ 1836 x_electrode = 17 + x_electrode; 1837 1838 y_electrode = (char)reg >> 4; /* sign extend upper 4 bits */ 1839 y_electrode = 13 + y_electrode; 1840 1841 x_phys = x_pitch * (x_electrode - 1); /* In 0.1 mm units */ 1842 y_phys = y_pitch * (y_electrode - 1); /* In 0.1 mm units */ 1843 1844 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ 1845 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ 1846 1847 psmouse_dbg(psmouse, 1848 "pitch %dx%d num-electrodes %dx%d physical size %dx%d mm res %dx%d\n", 1849 x_pitch, y_pitch, x_electrode, y_electrode, 1850 x_phys / 10, y_phys / 10, priv->x_res, priv->y_res); 1851 1852 return 0; 1853 } 1854 1855 static int alps_hw_init_rushmore_v3(struct psmouse *psmouse) 1856 { 1857 struct alps_data *priv = psmouse->private; 1858 struct ps2dev *ps2dev = &psmouse->ps2dev; 1859 int reg_val, ret = -1; 1860 1861 if (priv->flags & ALPS_DUALPOINT) { 1862 reg_val = alps_setup_trackstick_v3(psmouse, 1863 ALPS_REG_BASE_RUSHMORE); 1864 if (reg_val == -EIO) 1865 goto error; 1866 if (reg_val == -ENODEV) 1867 priv->flags &= ~ALPS_DUALPOINT; 1868 } 1869 1870 if (alps_enter_command_mode(psmouse) || 1871 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 || 1872 alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00)) 1873 goto error; 1874 1875 if (alps_get_v3_v7_resolution(psmouse, 0xc2da)) 1876 goto error; 1877 1878 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6); 1879 if (reg_val == -1) 1880 goto error; 1881 if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd)) 1882 goto error; 1883 1884 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 1885 goto error; 1886 1887 /* enter absolute mode */ 1888 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 1889 if (reg_val == -1) 1890 goto error; 1891 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 1892 goto error; 1893 1894 alps_exit_command_mode(psmouse); 1895 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 1896 1897 error: 1898 alps_exit_command_mode(psmouse); 1899 return ret; 1900 } 1901 1902 /* Must be in command mode when calling this function */ 1903 static int alps_absolute_mode_v4(struct psmouse *psmouse) 1904 { 1905 int reg_val; 1906 1907 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 1908 if (reg_val == -1) 1909 return -1; 1910 1911 reg_val |= 0x02; 1912 if (__alps_command_mode_write_reg(psmouse, reg_val)) 1913 return -1; 1914 1915 return 0; 1916 } 1917 1918 static int alps_hw_init_v4(struct psmouse *psmouse) 1919 { 1920 struct ps2dev *ps2dev = &psmouse->ps2dev; 1921 unsigned char param[4]; 1922 1923 if (alps_enter_command_mode(psmouse)) 1924 goto error; 1925 1926 if (alps_absolute_mode_v4(psmouse)) { 1927 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 1928 goto error; 1929 } 1930 1931 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c)) 1932 goto error; 1933 1934 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03)) 1935 goto error; 1936 1937 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03)) 1938 goto error; 1939 1940 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15)) 1941 goto error; 1942 1943 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01)) 1944 goto error; 1945 1946 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03)) 1947 goto error; 1948 1949 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03)) 1950 goto error; 1951 1952 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03)) 1953 goto error; 1954 1955 alps_exit_command_mode(psmouse); 1956 1957 /* 1958 * This sequence changes the output from a 9-byte to an 1959 * 8-byte format. All the same data seems to be present, 1960 * just in a more compact format. 1961 */ 1962 param[0] = 0xc8; 1963 param[1] = 0x64; 1964 param[2] = 0x50; 1965 if (ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 1966 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE) || 1967 ps2_command(ps2dev, ¶m[2], PSMOUSE_CMD_SETRATE) || 1968 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) 1969 return -1; 1970 1971 /* Set rate and enable data reporting */ 1972 param[0] = 0x64; 1973 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 1974 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 1975 psmouse_err(psmouse, "Failed to enable data reporting\n"); 1976 return -1; 1977 } 1978 1979 return 0; 1980 1981 error: 1982 /* 1983 * Leaving the touchpad in command mode will essentially render 1984 * it unusable until the machine reboots, so exit it here just 1985 * to be safe 1986 */ 1987 alps_exit_command_mode(psmouse); 1988 return -1; 1989 } 1990 1991 static int alps_dolphin_get_device_area(struct psmouse *psmouse, 1992 struct alps_data *priv) 1993 { 1994 struct ps2dev *ps2dev = &psmouse->ps2dev; 1995 unsigned char param[4] = {0}; 1996 int num_x_electrode, num_y_electrode; 1997 1998 if (alps_enter_command_mode(psmouse)) 1999 return -1; 2000 2001 param[0] = 0x0a; 2002 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 2003 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2004 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2005 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2006 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE)) 2007 return -1; 2008 2009 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 2010 return -1; 2011 2012 /* 2013 * Dolphin's sensor line number is not fixed. It can be calculated 2014 * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET. 2015 * Further more, we can get device's x_max and y_max by multiplying 2016 * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE. 2017 * 2018 * e.g. When we get register's sensor_x = 11 & sensor_y = 8, 2019 * real sensor line number X = 11 + 8 = 19, and 2020 * real sensor line number Y = 8 + 1 = 9. 2021 * So, x_max = (19 - 1) * 64 = 1152, and 2022 * y_max = (9 - 1) * 64 = 512. 2023 */ 2024 num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F); 2025 num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F); 2026 priv->x_bits = num_x_electrode; 2027 priv->y_bits = num_y_electrode; 2028 priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2029 priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2030 2031 if (alps_exit_command_mode(psmouse)) 2032 return -1; 2033 2034 return 0; 2035 } 2036 2037 static int alps_hw_init_dolphin_v1(struct psmouse *psmouse) 2038 { 2039 struct ps2dev *ps2dev = &psmouse->ps2dev; 2040 unsigned char param[2]; 2041 2042 /* This is dolphin "v1" as empirically defined by florin9doi */ 2043 param[0] = 0x64; 2044 param[1] = 0x28; 2045 2046 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2047 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2048 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 2049 return -1; 2050 2051 return 0; 2052 } 2053 2054 static int alps_hw_init_v7(struct psmouse *psmouse) 2055 { 2056 struct ps2dev *ps2dev = &psmouse->ps2dev; 2057 int reg_val, ret = -1; 2058 2059 if (alps_enter_command_mode(psmouse) || 2060 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1) 2061 goto error; 2062 2063 if (alps_get_v3_v7_resolution(psmouse, 0xc397)) 2064 goto error; 2065 2066 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 2067 goto error; 2068 2069 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 2070 if (reg_val == -1) 2071 goto error; 2072 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 2073 goto error; 2074 2075 alps_exit_command_mode(psmouse); 2076 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2077 2078 error: 2079 alps_exit_command_mode(psmouse); 2080 return ret; 2081 } 2082 2083 static void alps_set_defaults(struct alps_data *priv) 2084 { 2085 priv->byte0 = 0x8f; 2086 priv->mask0 = 0x8f; 2087 priv->flags = ALPS_DUALPOINT; 2088 2089 priv->x_max = 2000; 2090 priv->y_max = 1400; 2091 priv->x_bits = 15; 2092 priv->y_bits = 11; 2093 2094 switch (priv->proto_version) { 2095 case ALPS_PROTO_V1: 2096 case ALPS_PROTO_V2: 2097 priv->hw_init = alps_hw_init_v1_v2; 2098 priv->process_packet = alps_process_packet_v1_v2; 2099 priv->set_abs_params = alps_set_abs_params_st; 2100 priv->x_max = 1023; 2101 priv->y_max = 767; 2102 break; 2103 case ALPS_PROTO_V3: 2104 priv->hw_init = alps_hw_init_v3; 2105 priv->process_packet = alps_process_packet_v3; 2106 priv->set_abs_params = alps_set_abs_params_mt; 2107 priv->decode_fields = alps_decode_pinnacle; 2108 priv->nibble_commands = alps_v3_nibble_commands; 2109 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2110 break; 2111 case ALPS_PROTO_V4: 2112 priv->hw_init = alps_hw_init_v4; 2113 priv->process_packet = alps_process_packet_v4; 2114 priv->set_abs_params = alps_set_abs_params_mt; 2115 priv->nibble_commands = alps_v4_nibble_commands; 2116 priv->addr_command = PSMOUSE_CMD_DISABLE; 2117 break; 2118 case ALPS_PROTO_V5: 2119 priv->hw_init = alps_hw_init_dolphin_v1; 2120 priv->process_packet = alps_process_touchpad_packet_v3_v5; 2121 priv->decode_fields = alps_decode_dolphin; 2122 priv->set_abs_params = alps_set_abs_params_mt; 2123 priv->nibble_commands = alps_v3_nibble_commands; 2124 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2125 priv->byte0 = 0xc8; 2126 priv->mask0 = 0xd8; 2127 priv->flags = 0; 2128 priv->x_max = 1360; 2129 priv->y_max = 660; 2130 priv->x_bits = 23; 2131 priv->y_bits = 12; 2132 break; 2133 case ALPS_PROTO_V6: 2134 priv->hw_init = alps_hw_init_v6; 2135 priv->process_packet = alps_process_packet_v6; 2136 priv->set_abs_params = alps_set_abs_params_st; 2137 priv->nibble_commands = alps_v6_nibble_commands; 2138 priv->x_max = 2047; 2139 priv->y_max = 1535; 2140 break; 2141 case ALPS_PROTO_V7: 2142 priv->hw_init = alps_hw_init_v7; 2143 priv->process_packet = alps_process_packet_v7; 2144 priv->decode_fields = alps_decode_packet_v7; 2145 priv->set_abs_params = alps_set_abs_params_mt; 2146 priv->nibble_commands = alps_v3_nibble_commands; 2147 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2148 priv->x_max = 0xfff; 2149 priv->y_max = 0x7ff; 2150 priv->byte0 = 0x48; 2151 priv->mask0 = 0x48; 2152 2153 if (priv->fw_ver[1] != 0xba) 2154 priv->flags |= ALPS_BUTTONPAD; 2155 break; 2156 } 2157 } 2158 2159 static int alps_match_table(struct psmouse *psmouse, struct alps_data *priv, 2160 unsigned char *e7, unsigned char *ec) 2161 { 2162 const struct alps_model_info *model; 2163 int i; 2164 2165 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) { 2166 model = &alps_model_data[i]; 2167 2168 if (!memcmp(e7, model->signature, sizeof(model->signature)) && 2169 (!model->command_mode_resp || 2170 model->command_mode_resp == ec[2])) { 2171 2172 priv->proto_version = model->proto_version; 2173 alps_set_defaults(priv); 2174 2175 priv->flags = model->flags; 2176 priv->byte0 = model->byte0; 2177 priv->mask0 = model->mask0; 2178 2179 return 0; 2180 } 2181 } 2182 2183 return -EINVAL; 2184 } 2185 2186 static int alps_identify(struct psmouse *psmouse, struct alps_data *priv) 2187 { 2188 unsigned char e6[4], e7[4], ec[4]; 2189 2190 /* 2191 * First try "E6 report". 2192 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed. 2193 * The bits 0-2 of the first byte will be 1s if some buttons are 2194 * pressed. 2195 */ 2196 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2197 PSMOUSE_CMD_SETSCALE11, e6)) 2198 return -EIO; 2199 2200 if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100)) 2201 return -EINVAL; 2202 2203 /* 2204 * Now get the "E7" and "EC" reports. These will uniquely identify 2205 * most ALPS touchpads. 2206 */ 2207 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2208 PSMOUSE_CMD_SETSCALE21, e7) || 2209 alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2210 PSMOUSE_CMD_RESET_WRAP, ec) || 2211 alps_exit_command_mode(psmouse)) 2212 return -EIO; 2213 2214 /* Save the Firmware version */ 2215 memcpy(priv->fw_ver, ec, 3); 2216 2217 if (alps_match_table(psmouse, priv, e7, ec) == 0) { 2218 return 0; 2219 } else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 && 2220 ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) { 2221 priv->proto_version = ALPS_PROTO_V5; 2222 alps_set_defaults(priv); 2223 if (alps_dolphin_get_device_area(psmouse, priv)) 2224 return -EIO; 2225 else 2226 return 0; 2227 } else if (ec[0] == 0x88 && 2228 ((ec[1] & 0xf0) == 0xb0 || (ec[1] & 0xf0) == 0xc0)) { 2229 priv->proto_version = ALPS_PROTO_V7; 2230 alps_set_defaults(priv); 2231 2232 return 0; 2233 } else if (ec[0] == 0x88 && ec[1] == 0x08) { 2234 priv->proto_version = ALPS_PROTO_V3; 2235 alps_set_defaults(priv); 2236 2237 priv->hw_init = alps_hw_init_rushmore_v3; 2238 priv->decode_fields = alps_decode_rushmore; 2239 priv->x_bits = 16; 2240 priv->y_bits = 12; 2241 priv->flags |= ALPS_IS_RUSHMORE; 2242 2243 /* hack to make addr_command, nibble_command available */ 2244 psmouse->private = priv; 2245 2246 if (alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_RUSHMORE)) 2247 priv->flags &= ~ALPS_DUALPOINT; 2248 2249 return 0; 2250 } else if (ec[0] == 0x88 && ec[1] == 0x07 && 2251 ec[2] >= 0x90 && ec[2] <= 0x9d) { 2252 priv->proto_version = ALPS_PROTO_V3; 2253 alps_set_defaults(priv); 2254 2255 return 0; 2256 } 2257 2258 psmouse_dbg(psmouse, 2259 "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec); 2260 2261 return -EINVAL; 2262 } 2263 2264 static int alps_reconnect(struct psmouse *psmouse) 2265 { 2266 struct alps_data *priv = psmouse->private; 2267 2268 psmouse_reset(psmouse); 2269 2270 if (alps_identify(psmouse, priv) < 0) 2271 return -1; 2272 2273 return priv->hw_init(psmouse); 2274 } 2275 2276 static void alps_disconnect(struct psmouse *psmouse) 2277 { 2278 struct alps_data *priv = psmouse->private; 2279 2280 psmouse_reset(psmouse); 2281 del_timer_sync(&priv->timer); 2282 input_unregister_device(priv->dev2); 2283 kfree(priv); 2284 } 2285 2286 static void alps_set_abs_params_st(struct alps_data *priv, 2287 struct input_dev *dev1) 2288 { 2289 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0); 2290 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0); 2291 } 2292 2293 static void alps_set_abs_params_mt(struct alps_data *priv, 2294 struct input_dev *dev1) 2295 { 2296 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0); 2297 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0); 2298 2299 input_abs_set_res(dev1, ABS_MT_POSITION_X, priv->x_res); 2300 input_abs_set_res(dev1, ABS_MT_POSITION_Y, priv->y_res); 2301 2302 input_mt_init_slots(dev1, MAX_TOUCHES, INPUT_MT_POINTER | 2303 INPUT_MT_DROP_UNUSED | INPUT_MT_TRACK | INPUT_MT_SEMI_MT); 2304 2305 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit); 2306 set_bit(BTN_TOOL_QUADTAP, dev1->keybit); 2307 2308 /* V7 is real multi-touch */ 2309 if (priv->proto_version == ALPS_PROTO_V7) 2310 clear_bit(INPUT_PROP_SEMI_MT, dev1->propbit); 2311 } 2312 2313 int alps_init(struct psmouse *psmouse) 2314 { 2315 struct alps_data *priv; 2316 struct input_dev *dev1 = psmouse->dev, *dev2; 2317 2318 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL); 2319 dev2 = input_allocate_device(); 2320 if (!priv || !dev2) 2321 goto init_fail; 2322 2323 priv->dev2 = dev2; 2324 setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse); 2325 2326 psmouse->private = priv; 2327 2328 psmouse_reset(psmouse); 2329 2330 if (alps_identify(psmouse, priv) < 0) 2331 goto init_fail; 2332 2333 if (priv->hw_init(psmouse)) 2334 goto init_fail; 2335 2336 /* 2337 * Undo part of setup done for us by psmouse core since touchpad 2338 * is not a relative device. 2339 */ 2340 __clear_bit(EV_REL, dev1->evbit); 2341 __clear_bit(REL_X, dev1->relbit); 2342 __clear_bit(REL_Y, dev1->relbit); 2343 2344 /* 2345 * Now set up our capabilities. 2346 */ 2347 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY); 2348 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH); 2349 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER); 2350 dev1->keybit[BIT_WORD(BTN_LEFT)] |= 2351 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); 2352 2353 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS); 2354 2355 priv->set_abs_params(priv, dev1); 2356 /* No pressure on V7 */ 2357 if (priv->proto_version != ALPS_PROTO_V7) 2358 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2359 2360 if (priv->flags & ALPS_WHEEL) { 2361 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL); 2362 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL); 2363 } 2364 2365 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 2366 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD); 2367 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK); 2368 } 2369 2370 if (priv->flags & ALPS_FOUR_BUTTONS) { 2371 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0); 2372 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1); 2373 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2); 2374 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3); 2375 } else if (priv->flags & ALPS_BUTTONPAD) { 2376 set_bit(INPUT_PROP_BUTTONPAD, dev1->propbit); 2377 clear_bit(BTN_RIGHT, dev1->keybit); 2378 } else { 2379 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE); 2380 } 2381 2382 snprintf(priv->phys, sizeof(priv->phys), "%s/input1", psmouse->ps2dev.serio->phys); 2383 dev2->phys = priv->phys; 2384 dev2->name = (priv->flags & ALPS_DUALPOINT) ? 2385 "DualPoint Stick" : "ALPS PS/2 Device"; 2386 dev2->id.bustype = BUS_I8042; 2387 dev2->id.vendor = 0x0002; 2388 dev2->id.product = PSMOUSE_ALPS; 2389 dev2->id.version = 0x0000; 2390 dev2->dev.parent = &psmouse->ps2dev.serio->dev; 2391 2392 dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); 2393 dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); 2394 dev2->keybit[BIT_WORD(BTN_LEFT)] = 2395 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); 2396 2397 __set_bit(INPUT_PROP_POINTER, dev2->propbit); 2398 if (priv->flags & ALPS_DUALPOINT) 2399 __set_bit(INPUT_PROP_POINTING_STICK, dev2->propbit); 2400 2401 if (input_register_device(priv->dev2)) 2402 goto init_fail; 2403 2404 psmouse->protocol_handler = alps_process_byte; 2405 psmouse->poll = alps_poll; 2406 psmouse->disconnect = alps_disconnect; 2407 psmouse->reconnect = alps_reconnect; 2408 psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6; 2409 2410 /* We are having trouble resyncing ALPS touchpads so disable it for now */ 2411 psmouse->resync_time = 0; 2412 2413 /* Allow 2 invalid packets without resetting device */ 2414 psmouse->resetafter = psmouse->pktsize * 2; 2415 2416 return 0; 2417 2418 init_fail: 2419 psmouse_reset(psmouse); 2420 input_free_device(dev2); 2421 kfree(priv); 2422 psmouse->private = NULL; 2423 return -1; 2424 } 2425 2426 int alps_detect(struct psmouse *psmouse, bool set_properties) 2427 { 2428 struct alps_data dummy; 2429 2430 if (alps_identify(psmouse, &dummy) < 0) 2431 return -1; 2432 2433 if (set_properties) { 2434 psmouse->vendor = "ALPS"; 2435 psmouse->name = dummy.flags & ALPS_DUALPOINT ? 2436 "DualPoint TouchPad" : "GlidePoint"; 2437 psmouse->model = dummy.proto_version << 8; 2438 } 2439 return 0; 2440 } 2441 2442