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 /* 885 * packet-fmt b7 b6 b5 b4 b3 b2 b1 b0 886 * Byte0 TWO & MULTI L 1 R M 1 Y0-2 Y0-1 Y0-0 887 * Byte0 NEW L 1 X1-5 1 1 Y0-2 Y0-1 Y0-0 888 * Byte1 Y0-10 Y0-9 Y0-8 Y0-7 Y0-6 Y0-5 Y0-4 Y0-3 889 * Byte2 X0-11 1 X0-10 X0-9 X0-8 X0-7 X0-6 X0-5 890 * Byte3 X1-11 1 X0-4 X0-3 1 X0-2 X0-1 X0-0 891 * Byte4 TWO X1-10 TWO X1-9 X1-8 X1-7 X1-6 X1-5 X1-4 892 * Byte4 MULTI X1-10 TWO X1-9 X1-8 X1-7 X1-6 Y1-5 1 893 * Byte4 NEW X1-10 TWO X1-9 X1-8 X1-7 X1-6 0 0 894 * Byte5 TWO & NEW Y1-10 0 Y1-9 Y1-8 Y1-7 Y1-6 Y1-5 Y1-4 895 * Byte5 MULTI Y1-10 0 Y1-9 Y1-8 Y1-7 Y1-6 F-1 F-0 896 * L: Left button 897 * R / M: Non-clickpads: Right / Middle button 898 * Clickpads: When > 2 fingers are down, and some fingers 899 * are in the button area, then the 2 coordinates reported 900 * are for fingers outside the button area and these report 901 * extra fingers being present in the right / left button 902 * area. Note these fingers are not added to the F field! 903 * so if a TWO packet is received and R = 1 then there are 904 * 3 fingers down, etc. 905 * TWO: 1: Two touches present, byte 0/4/5 are in TWO fmt 906 * 0: If byte 4 bit 0 is 1, then byte 0/4/5 are in MULTI fmt 907 * otherwise byte 0 bit 4 must be set and byte 0/4/5 are 908 * in NEW fmt 909 * F: Number of fingers - 3, 0 means 3 fingers, 1 means 4 ... 910 */ 911 912 mt[0].x = ((pkt[2] & 0x80) << 4); 913 mt[0].x |= ((pkt[2] & 0x3F) << 5); 914 mt[0].x |= ((pkt[3] & 0x30) >> 1); 915 mt[0].x |= (pkt[3] & 0x07); 916 mt[0].y = (pkt[1] << 3) | (pkt[0] & 0x07); 917 918 mt[1].x = ((pkt[3] & 0x80) << 4); 919 mt[1].x |= ((pkt[4] & 0x80) << 3); 920 mt[1].x |= ((pkt[4] & 0x3F) << 4); 921 mt[1].y = ((pkt[5] & 0x80) << 3); 922 mt[1].y |= ((pkt[5] & 0x3F) << 4); 923 924 switch (pkt_id) { 925 case V7_PACKET_ID_TWO: 926 mt[1].x &= ~0x000F; 927 mt[1].y |= 0x000F; 928 break; 929 930 case V7_PACKET_ID_MULTI: 931 mt[1].x &= ~0x003F; 932 mt[1].y &= ~0x0020; 933 mt[1].y |= ((pkt[4] & 0x02) << 4); 934 mt[1].y |= 0x001F; 935 break; 936 937 case V7_PACKET_ID_NEW: 938 mt[1].x &= ~0x003F; 939 mt[1].x |= (pkt[0] & 0x20); 940 mt[1].y |= 0x000F; 941 break; 942 } 943 944 mt[0].y = 0x7FF - mt[0].y; 945 mt[1].y = 0x7FF - mt[1].y; 946 } 947 948 static int alps_get_mt_count(struct input_mt_pos *mt) 949 { 950 int i, fingers = 0; 951 952 for (i = 0; i < MAX_TOUCHES; i++) { 953 if (mt[i].x != 0 || mt[i].y != 0) 954 fingers++; 955 } 956 957 return fingers; 958 } 959 960 static int alps_decode_packet_v7(struct alps_fields *f, 961 unsigned char *p, 962 struct psmouse *psmouse) 963 { 964 struct alps_data *priv = psmouse->private; 965 unsigned char pkt_id; 966 967 pkt_id = alps_get_packet_id_v7(p); 968 if (pkt_id == V7_PACKET_ID_IDLE) 969 return 0; 970 if (pkt_id == V7_PACKET_ID_UNKNOWN) 971 return -1; 972 /* 973 * NEW packets are send to indicate a discontinuity in the finger 974 * coordinate reporting. Specifically a finger may have moved from 975 * slot 0 to 1 or vice versa. INPUT_MT_TRACK takes care of this for 976 * us. 977 * 978 * NEW packets have 3 problems: 979 * 1) They do not contain middle / right button info (on non clickpads) 980 * this can be worked around by preserving the old button state 981 * 2) They do not contain an accurate fingercount, and they are 982 * typically send when the number of fingers changes. We cannot use 983 * the old finger count as that may mismatch with the amount of 984 * touch coordinates we've available in the NEW packet 985 * 3) Their x data for the second touch is inaccurate leading to 986 * a possible jump of the x coordinate by 16 units when the first 987 * non NEW packet comes in 988 * Since problems 2 & 3 cannot be worked around, just ignore them. 989 */ 990 if (pkt_id == V7_PACKET_ID_NEW) 991 return 1; 992 993 alps_get_finger_coordinate_v7(f->mt, p, pkt_id); 994 995 if (pkt_id == V7_PACKET_ID_TWO) 996 f->fingers = alps_get_mt_count(f->mt); 997 else /* pkt_id == V7_PACKET_ID_MULTI */ 998 f->fingers = 3 + (p[5] & 0x03); 999 1000 f->left = (p[0] & 0x80) >> 7; 1001 if (priv->flags & ALPS_BUTTONPAD) { 1002 if (p[0] & 0x20) 1003 f->fingers++; 1004 if (p[0] & 0x10) 1005 f->fingers++; 1006 } else { 1007 f->right = (p[0] & 0x20) >> 5; 1008 f->middle = (p[0] & 0x10) >> 4; 1009 } 1010 1011 /* Sometimes a single touch is reported in mt[1] rather then mt[0] */ 1012 if (f->fingers == 1 && f->mt[0].x == 0 && f->mt[0].y == 0) { 1013 f->mt[0].x = f->mt[1].x; 1014 f->mt[0].y = f->mt[1].y; 1015 f->mt[1].x = 0; 1016 f->mt[1].y = 0; 1017 } 1018 1019 return 0; 1020 } 1021 1022 static void alps_process_trackstick_packet_v7(struct psmouse *psmouse) 1023 { 1024 struct alps_data *priv = psmouse->private; 1025 unsigned char *packet = psmouse->packet; 1026 struct input_dev *dev2 = priv->dev2; 1027 int x, y, z, left, right, middle; 1028 1029 /* 1030 * b7 b6 b5 b4 b3 b2 b1 b0 1031 * Byte0 0 1 0 0 1 0 0 0 1032 * Byte1 1 1 * * 1 M R L 1033 * Byte2 X7 1 X5 X4 X3 X2 X1 X0 1034 * Byte3 Z6 1 Y6 X6 1 Y2 Y1 Y0 1035 * Byte4 Y7 0 Y5 Y4 Y3 1 1 0 1036 * Byte5 T&P 0 Z5 Z4 Z3 Z2 Z1 Z0 1037 * M / R / L: Middle / Right / Left button 1038 */ 1039 1040 x = ((packet[2] & 0xbf)) | ((packet[3] & 0x10) << 2); 1041 y = (packet[3] & 0x07) | (packet[4] & 0xb8) | 1042 ((packet[3] & 0x20) << 1); 1043 z = (packet[5] & 0x3f) | ((packet[3] & 0x80) >> 1); 1044 1045 left = (packet[1] & 0x01); 1046 right = (packet[1] & 0x02) >> 1; 1047 middle = (packet[1] & 0x04) >> 2; 1048 1049 /* Divide 2 since trackpoint's speed is too fast */ 1050 input_report_rel(dev2, REL_X, (char)x / 2); 1051 input_report_rel(dev2, REL_Y, -((char)y / 2)); 1052 1053 input_report_key(dev2, BTN_LEFT, left); 1054 input_report_key(dev2, BTN_RIGHT, right); 1055 input_report_key(dev2, BTN_MIDDLE, middle); 1056 1057 input_sync(dev2); 1058 } 1059 1060 static void alps_process_touchpad_packet_v7(struct psmouse *psmouse) 1061 { 1062 struct alps_data *priv = psmouse->private; 1063 struct input_dev *dev = psmouse->dev; 1064 struct alps_fields *f = &priv->f; 1065 1066 memset(f, 0, sizeof(*f)); 1067 1068 if (priv->decode_fields(f, psmouse->packet, psmouse)) 1069 return; 1070 1071 alps_report_mt_data(psmouse, alps_get_mt_count(f->mt)); 1072 1073 input_mt_report_finger_count(dev, f->fingers); 1074 1075 input_report_key(dev, BTN_LEFT, f->left); 1076 input_report_key(dev, BTN_RIGHT, f->right); 1077 input_report_key(dev, BTN_MIDDLE, f->middle); 1078 1079 input_sync(dev); 1080 } 1081 1082 static void alps_process_packet_v7(struct psmouse *psmouse) 1083 { 1084 unsigned char *packet = psmouse->packet; 1085 1086 if (packet[0] == 0x48 && (packet[4] & 0x47) == 0x06) 1087 alps_process_trackstick_packet_v7(psmouse); 1088 else 1089 alps_process_touchpad_packet_v7(psmouse); 1090 } 1091 1092 static void alps_report_bare_ps2_packet(struct psmouse *psmouse, 1093 unsigned char packet[], 1094 bool report_buttons) 1095 { 1096 struct alps_data *priv = psmouse->private; 1097 struct input_dev *dev2 = priv->dev2; 1098 1099 if (report_buttons) 1100 alps_report_buttons(psmouse, dev2, psmouse->dev, 1101 packet[0] & 1, packet[0] & 2, packet[0] & 4); 1102 1103 input_report_rel(dev2, REL_X, 1104 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0); 1105 input_report_rel(dev2, REL_Y, 1106 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0); 1107 1108 input_sync(dev2); 1109 } 1110 1111 static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse) 1112 { 1113 struct alps_data *priv = psmouse->private; 1114 1115 if (psmouse->pktcnt < 6) 1116 return PSMOUSE_GOOD_DATA; 1117 1118 if (psmouse->pktcnt == 6) { 1119 /* 1120 * Start a timer to flush the packet if it ends up last 1121 * 6-byte packet in the stream. Timer needs to fire 1122 * psmouse core times out itself. 20 ms should be enough 1123 * to decide if we are getting more data or not. 1124 */ 1125 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20)); 1126 return PSMOUSE_GOOD_DATA; 1127 } 1128 1129 del_timer(&priv->timer); 1130 1131 if (psmouse->packet[6] & 0x80) { 1132 1133 /* 1134 * Highest bit is set - that means we either had 1135 * complete ALPS packet and this is start of the 1136 * next packet or we got garbage. 1137 */ 1138 1139 if (((psmouse->packet[3] | 1140 psmouse->packet[4] | 1141 psmouse->packet[5]) & 0x80) || 1142 (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) { 1143 psmouse_dbg(psmouse, 1144 "refusing packet %4ph (suspected interleaved ps/2)\n", 1145 psmouse->packet + 3); 1146 return PSMOUSE_BAD_DATA; 1147 } 1148 1149 priv->process_packet(psmouse); 1150 1151 /* Continue with the next packet */ 1152 psmouse->packet[0] = psmouse->packet[6]; 1153 psmouse->pktcnt = 1; 1154 1155 } else { 1156 1157 /* 1158 * High bit is 0 - that means that we indeed got a PS/2 1159 * packet in the middle of ALPS packet. 1160 * 1161 * There is also possibility that we got 6-byte ALPS 1162 * packet followed by 3-byte packet from trackpoint. We 1163 * can not distinguish between these 2 scenarios but 1164 * because the latter is unlikely to happen in course of 1165 * normal operation (user would need to press all 1166 * buttons on the pad and start moving trackpoint 1167 * without touching the pad surface) we assume former. 1168 * Even if we are wrong the wost thing that would happen 1169 * the cursor would jump but we should not get protocol 1170 * de-synchronization. 1171 */ 1172 1173 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3], 1174 false); 1175 1176 /* 1177 * Continue with the standard ALPS protocol handling, 1178 * but make sure we won't process it as an interleaved 1179 * packet again, which may happen if all buttons are 1180 * pressed. To avoid this let's reset the 4th bit which 1181 * is normally 1. 1182 */ 1183 psmouse->packet[3] = psmouse->packet[6] & 0xf7; 1184 psmouse->pktcnt = 4; 1185 } 1186 1187 return PSMOUSE_GOOD_DATA; 1188 } 1189 1190 static void alps_flush_packet(unsigned long data) 1191 { 1192 struct psmouse *psmouse = (struct psmouse *)data; 1193 struct alps_data *priv = psmouse->private; 1194 1195 serio_pause_rx(psmouse->ps2dev.serio); 1196 1197 if (psmouse->pktcnt == psmouse->pktsize) { 1198 1199 /* 1200 * We did not any more data in reasonable amount of time. 1201 * Validate the last 3 bytes and process as a standard 1202 * ALPS packet. 1203 */ 1204 if ((psmouse->packet[3] | 1205 psmouse->packet[4] | 1206 psmouse->packet[5]) & 0x80) { 1207 psmouse_dbg(psmouse, 1208 "refusing packet %3ph (suspected interleaved ps/2)\n", 1209 psmouse->packet + 3); 1210 } else { 1211 priv->process_packet(psmouse); 1212 } 1213 psmouse->pktcnt = 0; 1214 } 1215 1216 serio_continue_rx(psmouse->ps2dev.serio); 1217 } 1218 1219 static psmouse_ret_t alps_process_byte(struct psmouse *psmouse) 1220 { 1221 struct alps_data *priv = psmouse->private; 1222 1223 /* 1224 * Check if we are dealing with a bare PS/2 packet, presumably from 1225 * a device connected to the external PS/2 port. Because bare PS/2 1226 * protocol does not have enough constant bits to self-synchronize 1227 * properly we only do this if the device is fully synchronized. 1228 */ 1229 if (!psmouse->out_of_sync_cnt && (psmouse->packet[0] & 0xc8) == 0x08) { 1230 if (psmouse->pktcnt == 3) { 1231 alps_report_bare_ps2_packet(psmouse, psmouse->packet, 1232 true); 1233 return PSMOUSE_FULL_PACKET; 1234 } 1235 return PSMOUSE_GOOD_DATA; 1236 } 1237 1238 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */ 1239 1240 if ((priv->flags & ALPS_PS2_INTERLEAVED) && 1241 psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) { 1242 return alps_handle_interleaved_ps2(psmouse); 1243 } 1244 1245 if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) { 1246 psmouse_dbg(psmouse, 1247 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n", 1248 psmouse->packet[0], priv->mask0, priv->byte0); 1249 return PSMOUSE_BAD_DATA; 1250 } 1251 1252 /* Bytes 2 - pktsize should have 0 in the highest bit */ 1253 if (priv->proto_version < ALPS_PROTO_V5 && 1254 psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize && 1255 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) { 1256 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1257 psmouse->pktcnt - 1, 1258 psmouse->packet[psmouse->pktcnt - 1]); 1259 1260 if (priv->proto_version == ALPS_PROTO_V3 && 1261 psmouse->pktcnt == psmouse->pktsize) { 1262 /* 1263 * Some Dell boxes, such as Latitude E6440 or E7440 1264 * with closed lid, quite often smash last byte of 1265 * otherwise valid packet with 0xff. Given that the 1266 * next packet is very likely to be valid let's 1267 * report PSMOUSE_FULL_PACKET but not process data, 1268 * rather than reporting PSMOUSE_BAD_DATA and 1269 * filling the logs. 1270 */ 1271 return PSMOUSE_FULL_PACKET; 1272 } 1273 1274 return PSMOUSE_BAD_DATA; 1275 } 1276 1277 if (priv->proto_version == ALPS_PROTO_V7 && 1278 !alps_is_valid_package_v7(psmouse)) { 1279 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1280 psmouse->pktcnt - 1, 1281 psmouse->packet[psmouse->pktcnt - 1]); 1282 return PSMOUSE_BAD_DATA; 1283 } 1284 1285 if (psmouse->pktcnt == psmouse->pktsize) { 1286 priv->process_packet(psmouse); 1287 return PSMOUSE_FULL_PACKET; 1288 } 1289 1290 return PSMOUSE_GOOD_DATA; 1291 } 1292 1293 static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble) 1294 { 1295 struct ps2dev *ps2dev = &psmouse->ps2dev; 1296 struct alps_data *priv = psmouse->private; 1297 int command; 1298 unsigned char *param; 1299 unsigned char dummy[4]; 1300 1301 BUG_ON(nibble > 0xf); 1302 1303 command = priv->nibble_commands[nibble].command; 1304 param = (command & 0x0f00) ? 1305 dummy : (unsigned char *)&priv->nibble_commands[nibble].data; 1306 1307 if (ps2_command(ps2dev, param, command)) 1308 return -1; 1309 1310 return 0; 1311 } 1312 1313 static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr) 1314 { 1315 struct ps2dev *ps2dev = &psmouse->ps2dev; 1316 struct alps_data *priv = psmouse->private; 1317 int i, nibble; 1318 1319 if (ps2_command(ps2dev, NULL, priv->addr_command)) 1320 return -1; 1321 1322 for (i = 12; i >= 0; i -= 4) { 1323 nibble = (addr >> i) & 0xf; 1324 if (alps_command_mode_send_nibble(psmouse, nibble)) 1325 return -1; 1326 } 1327 1328 return 0; 1329 } 1330 1331 static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1332 { 1333 struct ps2dev *ps2dev = &psmouse->ps2dev; 1334 unsigned char param[4]; 1335 1336 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1337 return -1; 1338 1339 /* 1340 * The address being read is returned in the first two bytes 1341 * of the result. Check that this address matches the expected 1342 * address. 1343 */ 1344 if (addr != ((param[0] << 8) | param[1])) 1345 return -1; 1346 1347 return param[2]; 1348 } 1349 1350 static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1351 { 1352 if (alps_command_mode_set_addr(psmouse, addr)) 1353 return -1; 1354 return __alps_command_mode_read_reg(psmouse, addr); 1355 } 1356 1357 static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value) 1358 { 1359 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf)) 1360 return -1; 1361 if (alps_command_mode_send_nibble(psmouse, value & 0xf)) 1362 return -1; 1363 return 0; 1364 } 1365 1366 static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr, 1367 u8 value) 1368 { 1369 if (alps_command_mode_set_addr(psmouse, addr)) 1370 return -1; 1371 return __alps_command_mode_write_reg(psmouse, value); 1372 } 1373 1374 static int alps_rpt_cmd(struct psmouse *psmouse, int init_command, 1375 int repeated_command, unsigned char *param) 1376 { 1377 struct ps2dev *ps2dev = &psmouse->ps2dev; 1378 1379 param[0] = 0; 1380 if (init_command && ps2_command(ps2dev, param, init_command)) 1381 return -EIO; 1382 1383 if (ps2_command(ps2dev, NULL, repeated_command) || 1384 ps2_command(ps2dev, NULL, repeated_command) || 1385 ps2_command(ps2dev, NULL, repeated_command)) 1386 return -EIO; 1387 1388 param[0] = param[1] = param[2] = 0xff; 1389 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1390 return -EIO; 1391 1392 psmouse_dbg(psmouse, "%2.2X report: %3ph\n", 1393 repeated_command, param); 1394 return 0; 1395 } 1396 1397 static bool alps_check_valid_firmware_id(unsigned char id[]) 1398 { 1399 if (id[0] == 0x73) 1400 return true; 1401 1402 if (id[0] == 0x88 && 1403 (id[1] == 0x07 || 1404 id[1] == 0x08 || 1405 (id[1] & 0xf0) == 0xb0 || 1406 (id[1] & 0xf0) == 0xc0)) { 1407 return true; 1408 } 1409 1410 return false; 1411 } 1412 1413 static int alps_enter_command_mode(struct psmouse *psmouse) 1414 { 1415 unsigned char param[4]; 1416 1417 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) { 1418 psmouse_err(psmouse, "failed to enter command mode\n"); 1419 return -1; 1420 } 1421 1422 if (!alps_check_valid_firmware_id(param)) { 1423 psmouse_dbg(psmouse, 1424 "unknown response while entering command mode\n"); 1425 return -1; 1426 } 1427 return 0; 1428 } 1429 1430 static inline int alps_exit_command_mode(struct psmouse *psmouse) 1431 { 1432 struct ps2dev *ps2dev = &psmouse->ps2dev; 1433 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) 1434 return -1; 1435 return 0; 1436 } 1437 1438 /* 1439 * For DualPoint devices select the device that should respond to 1440 * subsequent commands. It looks like glidepad is behind stickpointer, 1441 * I'd thought it would be other way around... 1442 */ 1443 static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable) 1444 { 1445 struct ps2dev *ps2dev = &psmouse->ps2dev; 1446 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11; 1447 1448 if (ps2_command(ps2dev, NULL, cmd) || 1449 ps2_command(ps2dev, NULL, cmd) || 1450 ps2_command(ps2dev, NULL, cmd) || 1451 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1452 return -1; 1453 1454 /* we may get 3 more bytes, just ignore them */ 1455 ps2_drain(ps2dev, 3, 100); 1456 1457 return 0; 1458 } 1459 1460 static int alps_absolute_mode_v1_v2(struct psmouse *psmouse) 1461 { 1462 struct ps2dev *ps2dev = &psmouse->ps2dev; 1463 1464 /* Try ALPS magic knock - 4 disable before enable */ 1465 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1466 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1467 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1468 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1469 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) 1470 return -1; 1471 1472 /* 1473 * Switch mouse to poll (remote) mode so motion data will not 1474 * get in our way 1475 */ 1476 return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL); 1477 } 1478 1479 static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word) 1480 { 1481 int i, nibble; 1482 1483 /* 1484 * b0-b11 are valid bits, send sequence is inverse. 1485 * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1 1486 */ 1487 for (i = 0; i <= 8; i += 4) { 1488 nibble = (word >> i) & 0xf; 1489 if (alps_command_mode_send_nibble(psmouse, nibble)) 1490 return -1; 1491 } 1492 1493 return 0; 1494 } 1495 1496 static int alps_monitor_mode_write_reg(struct psmouse *psmouse, 1497 u16 addr, u16 value) 1498 { 1499 struct ps2dev *ps2dev = &psmouse->ps2dev; 1500 1501 /* 0x0A0 is the command to write the word */ 1502 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) || 1503 alps_monitor_mode_send_word(psmouse, 0x0A0) || 1504 alps_monitor_mode_send_word(psmouse, addr) || 1505 alps_monitor_mode_send_word(psmouse, value) || 1506 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1507 return -1; 1508 1509 return 0; 1510 } 1511 1512 static int alps_monitor_mode(struct psmouse *psmouse, bool enable) 1513 { 1514 struct ps2dev *ps2dev = &psmouse->ps2dev; 1515 1516 if (enable) { 1517 /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */ 1518 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 1519 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) || 1520 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1521 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1522 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1523 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1524 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1525 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO)) 1526 return -1; 1527 } else { 1528 /* EC to exit monitor mode */ 1529 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP)) 1530 return -1; 1531 } 1532 1533 return 0; 1534 } 1535 1536 static int alps_absolute_mode_v6(struct psmouse *psmouse) 1537 { 1538 u16 reg_val = 0x181; 1539 int ret = -1; 1540 1541 /* enter monitor mode, to write the register */ 1542 if (alps_monitor_mode(psmouse, true)) 1543 return -1; 1544 1545 ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val); 1546 1547 if (alps_monitor_mode(psmouse, false)) 1548 ret = -1; 1549 1550 return ret; 1551 } 1552 1553 static int alps_get_status(struct psmouse *psmouse, char *param) 1554 { 1555 /* Get status: 0xF5 0xF5 0xF5 0xE9 */ 1556 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param)) 1557 return -1; 1558 1559 return 0; 1560 } 1561 1562 /* 1563 * Turn touchpad tapping on or off. The sequences are: 1564 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable, 1565 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable. 1566 * My guess that 0xE9 (GetInfo) is here as a sync point. 1567 * For models that also have stickpointer (DualPoints) its tapping 1568 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but 1569 * we don't fiddle with it. 1570 */ 1571 static int alps_tap_mode(struct psmouse *psmouse, int enable) 1572 { 1573 struct ps2dev *ps2dev = &psmouse->ps2dev; 1574 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES; 1575 unsigned char tap_arg = enable ? 0x0A : 0x00; 1576 unsigned char param[4]; 1577 1578 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) || 1579 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1580 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1581 ps2_command(ps2dev, &tap_arg, cmd)) 1582 return -1; 1583 1584 if (alps_get_status(psmouse, param)) 1585 return -1; 1586 1587 return 0; 1588 } 1589 1590 /* 1591 * alps_poll() - poll the touchpad for current motion packet. 1592 * Used in resync. 1593 */ 1594 static int alps_poll(struct psmouse *psmouse) 1595 { 1596 struct alps_data *priv = psmouse->private; 1597 unsigned char buf[sizeof(psmouse->packet)]; 1598 bool poll_failed; 1599 1600 if (priv->flags & ALPS_PASS) 1601 alps_passthrough_mode_v2(psmouse, true); 1602 1603 poll_failed = ps2_command(&psmouse->ps2dev, buf, 1604 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0; 1605 1606 if (priv->flags & ALPS_PASS) 1607 alps_passthrough_mode_v2(psmouse, false); 1608 1609 if (poll_failed || (buf[0] & priv->mask0) != priv->byte0) 1610 return -1; 1611 1612 if ((psmouse->badbyte & 0xc8) == 0x08) { 1613 /* 1614 * Poll the track stick ... 1615 */ 1616 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8))) 1617 return -1; 1618 } 1619 1620 memcpy(psmouse->packet, buf, sizeof(buf)); 1621 return 0; 1622 } 1623 1624 static int alps_hw_init_v1_v2(struct psmouse *psmouse) 1625 { 1626 struct alps_data *priv = psmouse->private; 1627 1628 if ((priv->flags & ALPS_PASS) && 1629 alps_passthrough_mode_v2(psmouse, true)) { 1630 return -1; 1631 } 1632 1633 if (alps_tap_mode(psmouse, true)) { 1634 psmouse_warn(psmouse, "Failed to enable hardware tapping\n"); 1635 return -1; 1636 } 1637 1638 if (alps_absolute_mode_v1_v2(psmouse)) { 1639 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 1640 return -1; 1641 } 1642 1643 if ((priv->flags & ALPS_PASS) && 1644 alps_passthrough_mode_v2(psmouse, false)) { 1645 return -1; 1646 } 1647 1648 /* ALPS needs stream mode, otherwise it won't report any data */ 1649 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) { 1650 psmouse_err(psmouse, "Failed to enable stream mode\n"); 1651 return -1; 1652 } 1653 1654 return 0; 1655 } 1656 1657 static int alps_hw_init_v6(struct psmouse *psmouse) 1658 { 1659 unsigned char param[2] = {0xC8, 0x14}; 1660 1661 /* Enter passthrough mode to let trackpoint enter 6byte raw mode */ 1662 if (alps_passthrough_mode_v2(psmouse, true)) 1663 return -1; 1664 1665 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1666 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1667 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1668 ps2_command(&psmouse->ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 1669 ps2_command(&psmouse->ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 1670 return -1; 1671 1672 if (alps_passthrough_mode_v2(psmouse, false)) 1673 return -1; 1674 1675 if (alps_absolute_mode_v6(psmouse)) { 1676 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 1677 return -1; 1678 } 1679 1680 return 0; 1681 } 1682 1683 /* 1684 * Enable or disable passthrough mode to the trackstick. 1685 */ 1686 static int alps_passthrough_mode_v3(struct psmouse *psmouse, 1687 int reg_base, bool enable) 1688 { 1689 int reg_val, ret = -1; 1690 1691 if (alps_enter_command_mode(psmouse)) 1692 return -1; 1693 1694 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008); 1695 if (reg_val == -1) 1696 goto error; 1697 1698 if (enable) 1699 reg_val |= 0x01; 1700 else 1701 reg_val &= ~0x01; 1702 1703 ret = __alps_command_mode_write_reg(psmouse, reg_val); 1704 1705 error: 1706 if (alps_exit_command_mode(psmouse)) 1707 ret = -1; 1708 return ret; 1709 } 1710 1711 /* Must be in command mode when calling this function */ 1712 static int alps_absolute_mode_v3(struct psmouse *psmouse) 1713 { 1714 int reg_val; 1715 1716 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 1717 if (reg_val == -1) 1718 return -1; 1719 1720 reg_val |= 0x06; 1721 if (__alps_command_mode_write_reg(psmouse, reg_val)) 1722 return -1; 1723 1724 return 0; 1725 } 1726 1727 static int alps_probe_trackstick_v3(struct psmouse *psmouse, int reg_base) 1728 { 1729 int ret = -EIO, reg_val; 1730 1731 if (alps_enter_command_mode(psmouse)) 1732 goto error; 1733 1734 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08); 1735 if (reg_val == -1) 1736 goto error; 1737 1738 /* bit 7: trackstick is present */ 1739 ret = reg_val & 0x80 ? 0 : -ENODEV; 1740 1741 error: 1742 alps_exit_command_mode(psmouse); 1743 return ret; 1744 } 1745 1746 static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base) 1747 { 1748 struct ps2dev *ps2dev = &psmouse->ps2dev; 1749 int ret = 0; 1750 unsigned char param[4]; 1751 1752 if (alps_passthrough_mode_v3(psmouse, reg_base, true)) 1753 return -EIO; 1754 1755 /* 1756 * E7 report for the trackstick 1757 * 1758 * There have been reports of failures to seem to trace back 1759 * to the above trackstick check failing. When these occur 1760 * this E7 report fails, so when that happens we continue 1761 * with the assumption that there isn't a trackstick after 1762 * all. 1763 */ 1764 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) { 1765 psmouse_warn(psmouse, "trackstick E7 report failed\n"); 1766 ret = -ENODEV; 1767 } else { 1768 psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param); 1769 1770 /* 1771 * Not sure what this does, but it is absolutely 1772 * essential. Without it, the touchpad does not 1773 * work at all and the trackstick just emits normal 1774 * PS/2 packets. 1775 */ 1776 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1777 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1778 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1779 alps_command_mode_send_nibble(psmouse, 0x9) || 1780 alps_command_mode_send_nibble(psmouse, 0x4)) { 1781 psmouse_err(psmouse, 1782 "Error sending magic E6 sequence\n"); 1783 ret = -EIO; 1784 goto error; 1785 } 1786 1787 /* 1788 * This ensures the trackstick packets are in the format 1789 * supported by this driver. If bit 1 isn't set the packet 1790 * format is different. 1791 */ 1792 if (alps_enter_command_mode(psmouse) || 1793 alps_command_mode_write_reg(psmouse, 1794 reg_base + 0x08, 0x82) || 1795 alps_exit_command_mode(psmouse)) 1796 ret = -EIO; 1797 } 1798 1799 error: 1800 if (alps_passthrough_mode_v3(psmouse, reg_base, false)) 1801 ret = -EIO; 1802 1803 return ret; 1804 } 1805 1806 static int alps_hw_init_v3(struct psmouse *psmouse) 1807 { 1808 struct ps2dev *ps2dev = &psmouse->ps2dev; 1809 int reg_val; 1810 unsigned char param[4]; 1811 1812 reg_val = alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE); 1813 if (reg_val == -EIO) 1814 goto error; 1815 1816 if (reg_val == 0 && 1817 alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO) 1818 goto error; 1819 1820 if (alps_enter_command_mode(psmouse) || 1821 alps_absolute_mode_v3(psmouse)) { 1822 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 1823 goto error; 1824 } 1825 1826 reg_val = alps_command_mode_read_reg(psmouse, 0x0006); 1827 if (reg_val == -1) 1828 goto error; 1829 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 1830 goto error; 1831 1832 reg_val = alps_command_mode_read_reg(psmouse, 0x0007); 1833 if (reg_val == -1) 1834 goto error; 1835 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 1836 goto error; 1837 1838 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1) 1839 goto error; 1840 if (__alps_command_mode_write_reg(psmouse, 0x04)) 1841 goto error; 1842 1843 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1) 1844 goto error; 1845 if (__alps_command_mode_write_reg(psmouse, 0x03)) 1846 goto error; 1847 1848 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1) 1849 goto error; 1850 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03)) 1851 goto error; 1852 1853 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1) 1854 goto error; 1855 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04)) 1856 goto error; 1857 1858 alps_exit_command_mode(psmouse); 1859 1860 /* Set rate and enable data reporting */ 1861 param[0] = 0x64; 1862 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 1863 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 1864 psmouse_err(psmouse, "Failed to enable data reporting\n"); 1865 return -1; 1866 } 1867 1868 return 0; 1869 1870 error: 1871 /* 1872 * Leaving the touchpad in command mode will essentially render 1873 * it unusable until the machine reboots, so exit it here just 1874 * to be safe 1875 */ 1876 alps_exit_command_mode(psmouse); 1877 return -1; 1878 } 1879 1880 static int alps_get_v3_v7_resolution(struct psmouse *psmouse, int reg_pitch) 1881 { 1882 int reg, x_pitch, y_pitch, x_electrode, y_electrode, x_phys, y_phys; 1883 struct alps_data *priv = psmouse->private; 1884 1885 reg = alps_command_mode_read_reg(psmouse, reg_pitch); 1886 if (reg < 0) 1887 return reg; 1888 1889 x_pitch = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ 1890 x_pitch = 50 + 2 * x_pitch; /* In 0.1 mm units */ 1891 1892 y_pitch = (char)reg >> 4; /* sign extend upper 4 bits */ 1893 y_pitch = 36 + 2 * y_pitch; /* In 0.1 mm units */ 1894 1895 reg = alps_command_mode_read_reg(psmouse, reg_pitch + 1); 1896 if (reg < 0) 1897 return reg; 1898 1899 x_electrode = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ 1900 x_electrode = 17 + x_electrode; 1901 1902 y_electrode = (char)reg >> 4; /* sign extend upper 4 bits */ 1903 y_electrode = 13 + y_electrode; 1904 1905 x_phys = x_pitch * (x_electrode - 1); /* In 0.1 mm units */ 1906 y_phys = y_pitch * (y_electrode - 1); /* In 0.1 mm units */ 1907 1908 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ 1909 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ 1910 1911 psmouse_dbg(psmouse, 1912 "pitch %dx%d num-electrodes %dx%d physical size %dx%d mm res %dx%d\n", 1913 x_pitch, y_pitch, x_electrode, y_electrode, 1914 x_phys / 10, y_phys / 10, priv->x_res, priv->y_res); 1915 1916 return 0; 1917 } 1918 1919 static int alps_hw_init_rushmore_v3(struct psmouse *psmouse) 1920 { 1921 struct alps_data *priv = psmouse->private; 1922 struct ps2dev *ps2dev = &psmouse->ps2dev; 1923 int reg_val, ret = -1; 1924 1925 if (priv->flags & ALPS_DUALPOINT) { 1926 reg_val = alps_setup_trackstick_v3(psmouse, 1927 ALPS_REG_BASE_RUSHMORE); 1928 if (reg_val == -EIO) 1929 goto error; 1930 if (reg_val == -ENODEV) 1931 priv->flags &= ~ALPS_DUALPOINT; 1932 } 1933 1934 if (alps_enter_command_mode(psmouse) || 1935 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 || 1936 alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00)) 1937 goto error; 1938 1939 if (alps_get_v3_v7_resolution(psmouse, 0xc2da)) 1940 goto error; 1941 1942 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6); 1943 if (reg_val == -1) 1944 goto error; 1945 if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd)) 1946 goto error; 1947 1948 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 1949 goto error; 1950 1951 /* enter absolute mode */ 1952 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 1953 if (reg_val == -1) 1954 goto error; 1955 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 1956 goto error; 1957 1958 alps_exit_command_mode(psmouse); 1959 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 1960 1961 error: 1962 alps_exit_command_mode(psmouse); 1963 return ret; 1964 } 1965 1966 /* Must be in command mode when calling this function */ 1967 static int alps_absolute_mode_v4(struct psmouse *psmouse) 1968 { 1969 int reg_val; 1970 1971 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 1972 if (reg_val == -1) 1973 return -1; 1974 1975 reg_val |= 0x02; 1976 if (__alps_command_mode_write_reg(psmouse, reg_val)) 1977 return -1; 1978 1979 return 0; 1980 } 1981 1982 static int alps_hw_init_v4(struct psmouse *psmouse) 1983 { 1984 struct ps2dev *ps2dev = &psmouse->ps2dev; 1985 unsigned char param[4]; 1986 1987 if (alps_enter_command_mode(psmouse)) 1988 goto error; 1989 1990 if (alps_absolute_mode_v4(psmouse)) { 1991 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 1992 goto error; 1993 } 1994 1995 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c)) 1996 goto error; 1997 1998 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03)) 1999 goto error; 2000 2001 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03)) 2002 goto error; 2003 2004 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15)) 2005 goto error; 2006 2007 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01)) 2008 goto error; 2009 2010 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03)) 2011 goto error; 2012 2013 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03)) 2014 goto error; 2015 2016 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03)) 2017 goto error; 2018 2019 alps_exit_command_mode(psmouse); 2020 2021 /* 2022 * This sequence changes the output from a 9-byte to an 2023 * 8-byte format. All the same data seems to be present, 2024 * just in a more compact format. 2025 */ 2026 param[0] = 0xc8; 2027 param[1] = 0x64; 2028 param[2] = 0x50; 2029 if (ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2030 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE) || 2031 ps2_command(ps2dev, ¶m[2], PSMOUSE_CMD_SETRATE) || 2032 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) 2033 return -1; 2034 2035 /* Set rate and enable data reporting */ 2036 param[0] = 0x64; 2037 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 2038 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 2039 psmouse_err(psmouse, "Failed to enable data reporting\n"); 2040 return -1; 2041 } 2042 2043 return 0; 2044 2045 error: 2046 /* 2047 * Leaving the touchpad in command mode will essentially render 2048 * it unusable until the machine reboots, so exit it here just 2049 * to be safe 2050 */ 2051 alps_exit_command_mode(psmouse); 2052 return -1; 2053 } 2054 2055 static int alps_dolphin_get_device_area(struct psmouse *psmouse, 2056 struct alps_data *priv) 2057 { 2058 struct ps2dev *ps2dev = &psmouse->ps2dev; 2059 unsigned char param[4] = {0}; 2060 int num_x_electrode, num_y_electrode; 2061 2062 if (alps_enter_command_mode(psmouse)) 2063 return -1; 2064 2065 param[0] = 0x0a; 2066 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 2067 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2068 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2069 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2070 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE)) 2071 return -1; 2072 2073 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 2074 return -1; 2075 2076 /* 2077 * Dolphin's sensor line number is not fixed. It can be calculated 2078 * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET. 2079 * Further more, we can get device's x_max and y_max by multiplying 2080 * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE. 2081 * 2082 * e.g. When we get register's sensor_x = 11 & sensor_y = 8, 2083 * real sensor line number X = 11 + 8 = 19, and 2084 * real sensor line number Y = 8 + 1 = 9. 2085 * So, x_max = (19 - 1) * 64 = 1152, and 2086 * y_max = (9 - 1) * 64 = 512. 2087 */ 2088 num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F); 2089 num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F); 2090 priv->x_bits = num_x_electrode; 2091 priv->y_bits = num_y_electrode; 2092 priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2093 priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2094 2095 if (alps_exit_command_mode(psmouse)) 2096 return -1; 2097 2098 return 0; 2099 } 2100 2101 static int alps_hw_init_dolphin_v1(struct psmouse *psmouse) 2102 { 2103 struct ps2dev *ps2dev = &psmouse->ps2dev; 2104 unsigned char param[2]; 2105 2106 /* This is dolphin "v1" as empirically defined by florin9doi */ 2107 param[0] = 0x64; 2108 param[1] = 0x28; 2109 2110 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2111 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2112 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 2113 return -1; 2114 2115 return 0; 2116 } 2117 2118 static int alps_hw_init_v7(struct psmouse *psmouse) 2119 { 2120 struct ps2dev *ps2dev = &psmouse->ps2dev; 2121 int reg_val, ret = -1; 2122 2123 if (alps_enter_command_mode(psmouse) || 2124 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1) 2125 goto error; 2126 2127 if (alps_get_v3_v7_resolution(psmouse, 0xc397)) 2128 goto error; 2129 2130 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 2131 goto error; 2132 2133 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 2134 if (reg_val == -1) 2135 goto error; 2136 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 2137 goto error; 2138 2139 alps_exit_command_mode(psmouse); 2140 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2141 2142 error: 2143 alps_exit_command_mode(psmouse); 2144 return ret; 2145 } 2146 2147 static void alps_set_defaults(struct alps_data *priv) 2148 { 2149 priv->byte0 = 0x8f; 2150 priv->mask0 = 0x8f; 2151 priv->flags = ALPS_DUALPOINT; 2152 2153 priv->x_max = 2000; 2154 priv->y_max = 1400; 2155 priv->x_bits = 15; 2156 priv->y_bits = 11; 2157 2158 switch (priv->proto_version) { 2159 case ALPS_PROTO_V1: 2160 case ALPS_PROTO_V2: 2161 priv->hw_init = alps_hw_init_v1_v2; 2162 priv->process_packet = alps_process_packet_v1_v2; 2163 priv->set_abs_params = alps_set_abs_params_st; 2164 priv->x_max = 1023; 2165 priv->y_max = 767; 2166 break; 2167 case ALPS_PROTO_V3: 2168 priv->hw_init = alps_hw_init_v3; 2169 priv->process_packet = alps_process_packet_v3; 2170 priv->set_abs_params = alps_set_abs_params_mt; 2171 priv->decode_fields = alps_decode_pinnacle; 2172 priv->nibble_commands = alps_v3_nibble_commands; 2173 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2174 break; 2175 case ALPS_PROTO_V4: 2176 priv->hw_init = alps_hw_init_v4; 2177 priv->process_packet = alps_process_packet_v4; 2178 priv->set_abs_params = alps_set_abs_params_mt; 2179 priv->nibble_commands = alps_v4_nibble_commands; 2180 priv->addr_command = PSMOUSE_CMD_DISABLE; 2181 break; 2182 case ALPS_PROTO_V5: 2183 priv->hw_init = alps_hw_init_dolphin_v1; 2184 priv->process_packet = alps_process_touchpad_packet_v3_v5; 2185 priv->decode_fields = alps_decode_dolphin; 2186 priv->set_abs_params = alps_set_abs_params_mt; 2187 priv->nibble_commands = alps_v3_nibble_commands; 2188 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2189 priv->byte0 = 0xc8; 2190 priv->mask0 = 0xd8; 2191 priv->flags = 0; 2192 priv->x_max = 1360; 2193 priv->y_max = 660; 2194 priv->x_bits = 23; 2195 priv->y_bits = 12; 2196 break; 2197 case ALPS_PROTO_V6: 2198 priv->hw_init = alps_hw_init_v6; 2199 priv->process_packet = alps_process_packet_v6; 2200 priv->set_abs_params = alps_set_abs_params_st; 2201 priv->nibble_commands = alps_v6_nibble_commands; 2202 priv->x_max = 2047; 2203 priv->y_max = 1535; 2204 break; 2205 case ALPS_PROTO_V7: 2206 priv->hw_init = alps_hw_init_v7; 2207 priv->process_packet = alps_process_packet_v7; 2208 priv->decode_fields = alps_decode_packet_v7; 2209 priv->set_abs_params = alps_set_abs_params_mt; 2210 priv->nibble_commands = alps_v3_nibble_commands; 2211 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2212 priv->x_max = 0xfff; 2213 priv->y_max = 0x7ff; 2214 priv->byte0 = 0x48; 2215 priv->mask0 = 0x48; 2216 2217 if (priv->fw_ver[1] != 0xba) 2218 priv->flags |= ALPS_BUTTONPAD; 2219 break; 2220 } 2221 } 2222 2223 static int alps_match_table(struct psmouse *psmouse, struct alps_data *priv, 2224 unsigned char *e7, unsigned char *ec) 2225 { 2226 const struct alps_model_info *model; 2227 int i; 2228 2229 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) { 2230 model = &alps_model_data[i]; 2231 2232 if (!memcmp(e7, model->signature, sizeof(model->signature)) && 2233 (!model->command_mode_resp || 2234 model->command_mode_resp == ec[2])) { 2235 2236 priv->proto_version = model->proto_version; 2237 alps_set_defaults(priv); 2238 2239 priv->flags = model->flags; 2240 priv->byte0 = model->byte0; 2241 priv->mask0 = model->mask0; 2242 2243 return 0; 2244 } 2245 } 2246 2247 return -EINVAL; 2248 } 2249 2250 static int alps_identify(struct psmouse *psmouse, struct alps_data *priv) 2251 { 2252 unsigned char e6[4], e7[4], ec[4]; 2253 2254 /* 2255 * First try "E6 report". 2256 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed. 2257 * The bits 0-2 of the first byte will be 1s if some buttons are 2258 * pressed. 2259 */ 2260 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2261 PSMOUSE_CMD_SETSCALE11, e6)) 2262 return -EIO; 2263 2264 if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100)) 2265 return -EINVAL; 2266 2267 /* 2268 * Now get the "E7" and "EC" reports. These will uniquely identify 2269 * most ALPS touchpads. 2270 */ 2271 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2272 PSMOUSE_CMD_SETSCALE21, e7) || 2273 alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2274 PSMOUSE_CMD_RESET_WRAP, ec) || 2275 alps_exit_command_mode(psmouse)) 2276 return -EIO; 2277 2278 /* Save the Firmware version */ 2279 memcpy(priv->fw_ver, ec, 3); 2280 2281 if (alps_match_table(psmouse, priv, e7, ec) == 0) { 2282 return 0; 2283 } else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 && 2284 ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) { 2285 priv->proto_version = ALPS_PROTO_V5; 2286 alps_set_defaults(priv); 2287 if (alps_dolphin_get_device_area(psmouse, priv)) 2288 return -EIO; 2289 else 2290 return 0; 2291 } else if (ec[0] == 0x88 && 2292 ((ec[1] & 0xf0) == 0xb0 || (ec[1] & 0xf0) == 0xc0)) { 2293 priv->proto_version = ALPS_PROTO_V7; 2294 alps_set_defaults(priv); 2295 2296 return 0; 2297 } else if (ec[0] == 0x88 && ec[1] == 0x08) { 2298 priv->proto_version = ALPS_PROTO_V3; 2299 alps_set_defaults(priv); 2300 2301 priv->hw_init = alps_hw_init_rushmore_v3; 2302 priv->decode_fields = alps_decode_rushmore; 2303 priv->x_bits = 16; 2304 priv->y_bits = 12; 2305 priv->flags |= ALPS_IS_RUSHMORE; 2306 2307 /* hack to make addr_command, nibble_command available */ 2308 psmouse->private = priv; 2309 2310 if (alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_RUSHMORE)) 2311 priv->flags &= ~ALPS_DUALPOINT; 2312 2313 return 0; 2314 } else if (ec[0] == 0x88 && ec[1] == 0x07 && 2315 ec[2] >= 0x90 && ec[2] <= 0x9d) { 2316 priv->proto_version = ALPS_PROTO_V3; 2317 alps_set_defaults(priv); 2318 2319 return 0; 2320 } 2321 2322 psmouse_dbg(psmouse, 2323 "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec); 2324 2325 return -EINVAL; 2326 } 2327 2328 static int alps_reconnect(struct psmouse *psmouse) 2329 { 2330 struct alps_data *priv = psmouse->private; 2331 2332 psmouse_reset(psmouse); 2333 2334 if (alps_identify(psmouse, priv) < 0) 2335 return -1; 2336 2337 return priv->hw_init(psmouse); 2338 } 2339 2340 static void alps_disconnect(struct psmouse *psmouse) 2341 { 2342 struct alps_data *priv = psmouse->private; 2343 2344 psmouse_reset(psmouse); 2345 del_timer_sync(&priv->timer); 2346 input_unregister_device(priv->dev2); 2347 kfree(priv); 2348 } 2349 2350 static void alps_set_abs_params_st(struct alps_data *priv, 2351 struct input_dev *dev1) 2352 { 2353 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0); 2354 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0); 2355 } 2356 2357 static void alps_set_abs_params_mt(struct alps_data *priv, 2358 struct input_dev *dev1) 2359 { 2360 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0); 2361 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0); 2362 2363 input_abs_set_res(dev1, ABS_MT_POSITION_X, priv->x_res); 2364 input_abs_set_res(dev1, ABS_MT_POSITION_Y, priv->y_res); 2365 2366 input_mt_init_slots(dev1, MAX_TOUCHES, INPUT_MT_POINTER | 2367 INPUT_MT_DROP_UNUSED | INPUT_MT_TRACK | INPUT_MT_SEMI_MT); 2368 2369 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit); 2370 set_bit(BTN_TOOL_QUADTAP, dev1->keybit); 2371 2372 /* V7 is real multi-touch */ 2373 if (priv->proto_version == ALPS_PROTO_V7) 2374 clear_bit(INPUT_PROP_SEMI_MT, dev1->propbit); 2375 } 2376 2377 int alps_init(struct psmouse *psmouse) 2378 { 2379 struct alps_data *priv; 2380 struct input_dev *dev1 = psmouse->dev, *dev2; 2381 2382 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL); 2383 dev2 = input_allocate_device(); 2384 if (!priv || !dev2) 2385 goto init_fail; 2386 2387 priv->dev2 = dev2; 2388 setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse); 2389 2390 psmouse->private = priv; 2391 2392 psmouse_reset(psmouse); 2393 2394 if (alps_identify(psmouse, priv) < 0) 2395 goto init_fail; 2396 2397 if (priv->hw_init(psmouse)) 2398 goto init_fail; 2399 2400 /* 2401 * Undo part of setup done for us by psmouse core since touchpad 2402 * is not a relative device. 2403 */ 2404 __clear_bit(EV_REL, dev1->evbit); 2405 __clear_bit(REL_X, dev1->relbit); 2406 __clear_bit(REL_Y, dev1->relbit); 2407 2408 /* 2409 * Now set up our capabilities. 2410 */ 2411 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY); 2412 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH); 2413 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER); 2414 dev1->keybit[BIT_WORD(BTN_LEFT)] |= 2415 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); 2416 2417 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS); 2418 2419 priv->set_abs_params(priv, dev1); 2420 /* No pressure on V7 */ 2421 if (priv->proto_version != ALPS_PROTO_V7) 2422 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2423 2424 if (priv->flags & ALPS_WHEEL) { 2425 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL); 2426 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL); 2427 } 2428 2429 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 2430 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD); 2431 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK); 2432 } 2433 2434 if (priv->flags & ALPS_FOUR_BUTTONS) { 2435 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0); 2436 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1); 2437 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2); 2438 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3); 2439 } else if (priv->flags & ALPS_BUTTONPAD) { 2440 set_bit(INPUT_PROP_BUTTONPAD, dev1->propbit); 2441 clear_bit(BTN_RIGHT, dev1->keybit); 2442 } else { 2443 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE); 2444 } 2445 2446 snprintf(priv->phys, sizeof(priv->phys), "%s/input1", psmouse->ps2dev.serio->phys); 2447 dev2->phys = priv->phys; 2448 dev2->name = (priv->flags & ALPS_DUALPOINT) ? 2449 "DualPoint Stick" : "ALPS PS/2 Device"; 2450 dev2->id.bustype = BUS_I8042; 2451 dev2->id.vendor = 0x0002; 2452 dev2->id.product = PSMOUSE_ALPS; 2453 dev2->id.version = 0x0000; 2454 dev2->dev.parent = &psmouse->ps2dev.serio->dev; 2455 2456 dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); 2457 dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); 2458 dev2->keybit[BIT_WORD(BTN_LEFT)] = 2459 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); 2460 2461 __set_bit(INPUT_PROP_POINTER, dev2->propbit); 2462 if (priv->flags & ALPS_DUALPOINT) 2463 __set_bit(INPUT_PROP_POINTING_STICK, dev2->propbit); 2464 2465 if (input_register_device(priv->dev2)) 2466 goto init_fail; 2467 2468 psmouse->protocol_handler = alps_process_byte; 2469 psmouse->poll = alps_poll; 2470 psmouse->disconnect = alps_disconnect; 2471 psmouse->reconnect = alps_reconnect; 2472 psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6; 2473 2474 /* We are having trouble resyncing ALPS touchpads so disable it for now */ 2475 psmouse->resync_time = 0; 2476 2477 /* Allow 2 invalid packets without resetting device */ 2478 psmouse->resetafter = psmouse->pktsize * 2; 2479 2480 return 0; 2481 2482 init_fail: 2483 psmouse_reset(psmouse); 2484 input_free_device(dev2); 2485 kfree(priv); 2486 psmouse->private = NULL; 2487 return -1; 2488 } 2489 2490 int alps_detect(struct psmouse *psmouse, bool set_properties) 2491 { 2492 struct alps_data dummy; 2493 2494 if (alps_identify(psmouse, &dummy) < 0) 2495 return -1; 2496 2497 if (set_properties) { 2498 psmouse->vendor = "ALPS"; 2499 psmouse->name = dummy.flags & ALPS_DUALPOINT ? 2500 "DualPoint TouchPad" : "GlidePoint"; 2501 psmouse->model = dummy.proto_version << 8; 2502 } 2503 return 0; 2504 } 2505 2506