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 */ 102 103 static const struct alps_model_info alps_model_data[] = { 104 { { 0x32, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Toshiba Salellite Pro M10 */ 105 { { 0x33, 0x02, 0x0a }, 0x00, ALPS_PROTO_V1, 0x88, 0xf8, 0 }, /* UMAX-530T */ 106 { { 0x53, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, 107 { { 0x53, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, 108 { { 0x60, 0x03, 0xc8 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, /* HP ze1115 */ 109 { { 0x63, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, 110 { { 0x63, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, 111 { { 0x63, 0x02, 0x28 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Fujitsu Siemens S6010 */ 112 { { 0x63, 0x02, 0x3c }, 0x00, ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL }, /* Toshiba Satellite S2400-103 */ 113 { { 0x63, 0x02, 0x50 }, 0x00, ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 }, /* NEC Versa L320 */ 114 { { 0x63, 0x02, 0x64 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, 115 { { 0x63, 0x03, 0xc8 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D800 */ 116 { { 0x73, 0x00, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT }, /* ThinkPad R61 8918-5QG */ 117 { { 0x73, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, 118 { { 0x73, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Ahtec Laptop */ 119 { { 0x20, 0x02, 0x0e }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* XXX */ 120 { { 0x22, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, 121 { { 0x22, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D600 */ 122 /* Dell Latitude E5500, E6400, E6500, Precision M4400 */ 123 { { 0x62, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xcf, 0xcf, 124 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED }, 125 { { 0x73, 0x00, 0x14 }, 0x00, ALPS_PROTO_V6, 0xff, 0xff, ALPS_DUALPOINT }, /* Dell XT2 */ 126 { { 0x73, 0x02, 0x50 }, 0x00, ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS }, /* Dell Vostro 1400 */ 127 { { 0x52, 0x01, 0x14 }, 0x00, ALPS_PROTO_V2, 0xff, 0xff, 128 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED }, /* Toshiba Tecra A11-11L */ 129 { { 0x73, 0x02, 0x64 }, 0x8a, ALPS_PROTO_V4, 0x8f, 0x8f, 0 }, 130 }; 131 132 static void alps_set_abs_params_st(struct alps_data *priv, 133 struct input_dev *dev1); 134 static void alps_set_abs_params_mt(struct alps_data *priv, 135 struct input_dev *dev1); 136 137 /* 138 * XXX - this entry is suspicious. First byte has zero lower nibble, 139 * which is what a normal mouse would report. Also, the value 0x0e 140 * isn't valid per PS/2 spec. 141 */ 142 143 /* Packet formats are described in Documentation/input/alps.txt */ 144 145 static bool alps_is_valid_first_byte(struct alps_data *priv, 146 unsigned char data) 147 { 148 return (data & priv->mask0) == priv->byte0; 149 } 150 151 static void alps_report_buttons(struct psmouse *psmouse, 152 struct input_dev *dev1, struct input_dev *dev2, 153 int left, int right, int middle) 154 { 155 struct input_dev *dev; 156 157 /* 158 * If shared button has already been reported on the 159 * other device (dev2) then this event should be also 160 * sent through that device. 161 */ 162 dev = test_bit(BTN_LEFT, dev2->key) ? dev2 : dev1; 163 input_report_key(dev, BTN_LEFT, left); 164 165 dev = test_bit(BTN_RIGHT, dev2->key) ? dev2 : dev1; 166 input_report_key(dev, BTN_RIGHT, right); 167 168 dev = test_bit(BTN_MIDDLE, dev2->key) ? dev2 : dev1; 169 input_report_key(dev, BTN_MIDDLE, middle); 170 171 /* 172 * Sync the _other_ device now, we'll do the first 173 * device later once we report the rest of the events. 174 */ 175 input_sync(dev2); 176 } 177 178 static void alps_process_packet_v1_v2(struct psmouse *psmouse) 179 { 180 struct alps_data *priv = psmouse->private; 181 unsigned char *packet = psmouse->packet; 182 struct input_dev *dev = psmouse->dev; 183 struct input_dev *dev2 = priv->dev2; 184 int x, y, z, ges, fin, left, right, middle; 185 int back = 0, forward = 0; 186 187 if (priv->proto_version == ALPS_PROTO_V1) { 188 left = packet[2] & 0x10; 189 right = packet[2] & 0x08; 190 middle = 0; 191 x = packet[1] | ((packet[0] & 0x07) << 7); 192 y = packet[4] | ((packet[3] & 0x07) << 7); 193 z = packet[5]; 194 } else { 195 left = packet[3] & 1; 196 right = packet[3] & 2; 197 middle = packet[3] & 4; 198 x = packet[1] | ((packet[2] & 0x78) << (7 - 3)); 199 y = packet[4] | ((packet[3] & 0x70) << (7 - 4)); 200 z = packet[5]; 201 } 202 203 if (priv->flags & ALPS_FW_BK_1) { 204 back = packet[0] & 0x10; 205 forward = packet[2] & 4; 206 } 207 208 if (priv->flags & ALPS_FW_BK_2) { 209 back = packet[3] & 4; 210 forward = packet[2] & 4; 211 if ((middle = forward && back)) 212 forward = back = 0; 213 } 214 215 ges = packet[2] & 1; 216 fin = packet[2] & 2; 217 218 if ((priv->flags & ALPS_DUALPOINT) && z == 127) { 219 input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x)); 220 input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y)); 221 222 alps_report_buttons(psmouse, dev2, dev, left, right, middle); 223 224 input_sync(dev2); 225 return; 226 } 227 228 alps_report_buttons(psmouse, dev, dev2, left, right, middle); 229 230 /* Convert hardware tap to a reasonable Z value */ 231 if (ges && !fin) 232 z = 40; 233 234 /* 235 * A "tap and drag" operation is reported by the hardware as a transition 236 * from (!fin && ges) to (fin && ges). This should be translated to the 237 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually. 238 */ 239 if (ges && fin && !priv->prev_fin) { 240 input_report_abs(dev, ABS_X, x); 241 input_report_abs(dev, ABS_Y, y); 242 input_report_abs(dev, ABS_PRESSURE, 0); 243 input_report_key(dev, BTN_TOOL_FINGER, 0); 244 input_sync(dev); 245 } 246 priv->prev_fin = fin; 247 248 if (z > 30) 249 input_report_key(dev, BTN_TOUCH, 1); 250 if (z < 25) 251 input_report_key(dev, BTN_TOUCH, 0); 252 253 if (z > 0) { 254 input_report_abs(dev, ABS_X, x); 255 input_report_abs(dev, ABS_Y, y); 256 } 257 258 input_report_abs(dev, ABS_PRESSURE, z); 259 input_report_key(dev, BTN_TOOL_FINGER, z > 0); 260 261 if (priv->flags & ALPS_WHEEL) 262 input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07)); 263 264 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 265 input_report_key(dev, BTN_FORWARD, forward); 266 input_report_key(dev, BTN_BACK, back); 267 } 268 269 if (priv->flags & ALPS_FOUR_BUTTONS) { 270 input_report_key(dev, BTN_0, packet[2] & 4); 271 input_report_key(dev, BTN_1, packet[0] & 0x10); 272 input_report_key(dev, BTN_2, packet[3] & 4); 273 input_report_key(dev, BTN_3, packet[0] & 0x20); 274 } 275 276 input_sync(dev); 277 } 278 279 /* 280 * Process bitmap data from v3 and v4 protocols. Returns the number of 281 * fingers detected. A return value of 0 means at least one of the 282 * bitmaps was empty. 283 * 284 * The bitmaps don't have enough data to track fingers, so this function 285 * only generates points representing a bounding box of all contacts. 286 * These points are returned in x1, y1, x2, and y2 when the return value 287 * is greater than 0. 288 */ 289 static int alps_process_bitmap(struct alps_data *priv, 290 unsigned int x_map, unsigned int y_map, 291 int *x1, int *y1, int *x2, int *y2) 292 { 293 struct alps_bitmap_point { 294 int start_bit; 295 int num_bits; 296 }; 297 298 int fingers_x = 0, fingers_y = 0, fingers; 299 int i, bit, prev_bit; 300 struct alps_bitmap_point x_low = {0,}, x_high = {0,}; 301 struct alps_bitmap_point y_low = {0,}, y_high = {0,}; 302 struct alps_bitmap_point *point; 303 304 if (!x_map || !y_map) 305 return 0; 306 307 *x1 = *y1 = *x2 = *y2 = 0; 308 309 prev_bit = 0; 310 point = &x_low; 311 for (i = 0; x_map != 0; i++, x_map >>= 1) { 312 bit = x_map & 1; 313 if (bit) { 314 if (!prev_bit) { 315 point->start_bit = i; 316 fingers_x++; 317 } 318 point->num_bits++; 319 } else { 320 if (prev_bit) 321 point = &x_high; 322 else 323 point->num_bits = 0; 324 } 325 prev_bit = bit; 326 } 327 328 /* 329 * y bitmap is reversed for what we need (lower positions are in 330 * higher bits), so we process from the top end. 331 */ 332 y_map = y_map << (sizeof(y_map) * BITS_PER_BYTE - priv->y_bits); 333 prev_bit = 0; 334 point = &y_low; 335 for (i = 0; y_map != 0; i++, y_map <<= 1) { 336 bit = y_map & (1 << (sizeof(y_map) * BITS_PER_BYTE - 1)); 337 if (bit) { 338 if (!prev_bit) { 339 point->start_bit = i; 340 fingers_y++; 341 } 342 point->num_bits++; 343 } else { 344 if (prev_bit) 345 point = &y_high; 346 else 347 point->num_bits = 0; 348 } 349 prev_bit = bit; 350 } 351 352 /* 353 * Fingers can overlap, so we use the maximum count of fingers 354 * on either axis as the finger count. 355 */ 356 fingers = max(fingers_x, fingers_y); 357 358 /* 359 * If total fingers is > 1 but either axis reports only a single 360 * contact, we have overlapping or adjacent fingers. For the 361 * purposes of creating a bounding box, divide the single contact 362 * (roughly) equally between the two points. 363 */ 364 if (fingers > 1) { 365 if (fingers_x == 1) { 366 i = x_low.num_bits / 2; 367 x_low.num_bits = x_low.num_bits - i; 368 x_high.start_bit = x_low.start_bit + i; 369 x_high.num_bits = max(i, 1); 370 } else if (fingers_y == 1) { 371 i = y_low.num_bits / 2; 372 y_low.num_bits = y_low.num_bits - i; 373 y_high.start_bit = y_low.start_bit + i; 374 y_high.num_bits = max(i, 1); 375 } 376 } 377 378 *x1 = (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) / 379 (2 * (priv->x_bits - 1)); 380 *y1 = (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) / 381 (2 * (priv->y_bits - 1)); 382 383 if (fingers > 1) { 384 *x2 = (priv->x_max * 385 (2 * x_high.start_bit + x_high.num_bits - 1)) / 386 (2 * (priv->x_bits - 1)); 387 *y2 = (priv->y_max * 388 (2 * y_high.start_bit + y_high.num_bits - 1)) / 389 (2 * (priv->y_bits - 1)); 390 } 391 392 return fingers; 393 } 394 395 static void alps_set_slot(struct input_dev *dev, int slot, bool active, 396 int x, int y) 397 { 398 input_mt_slot(dev, slot); 399 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active); 400 if (active) { 401 input_report_abs(dev, ABS_MT_POSITION_X, x); 402 input_report_abs(dev, ABS_MT_POSITION_Y, y); 403 } 404 } 405 406 static void alps_report_semi_mt_data(struct input_dev *dev, int num_fingers, 407 int x1, int y1, int x2, int y2) 408 { 409 alps_set_slot(dev, 0, num_fingers != 0, x1, y1); 410 alps_set_slot(dev, 1, num_fingers == 2, x2, y2); 411 } 412 413 static void alps_process_trackstick_packet_v3(struct psmouse *psmouse) 414 { 415 struct alps_data *priv = psmouse->private; 416 unsigned char *packet = psmouse->packet; 417 struct input_dev *dev = priv->dev2; 418 int x, y, z, left, right, middle; 419 420 /* Sanity check packet */ 421 if (!(packet[0] & 0x40)) { 422 psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n"); 423 return; 424 } 425 426 /* 427 * There's a special packet that seems to indicate the end 428 * of a stream of trackstick data. Filter these out. 429 */ 430 if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f) 431 return; 432 433 x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f)); 434 y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f)); 435 z = (packet[4] & 0x7c) >> 2; 436 437 /* 438 * The x and y values tend to be quite large, and when used 439 * alone the trackstick is difficult to use. Scale them down 440 * to compensate. 441 */ 442 x /= 8; 443 y /= 8; 444 445 input_report_rel(dev, REL_X, x); 446 input_report_rel(dev, REL_Y, -y); 447 448 /* 449 * Most ALPS models report the trackstick buttons in the touchpad 450 * packets, but a few report them here. No reliable way has been 451 * found to differentiate between the models upfront, so we enable 452 * the quirk in response to seeing a button press in the trackstick 453 * packet. 454 */ 455 left = packet[3] & 0x01; 456 right = packet[3] & 0x02; 457 middle = packet[3] & 0x04; 458 459 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) && 460 (left || right || middle)) 461 priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS; 462 463 if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) { 464 input_report_key(dev, BTN_LEFT, left); 465 input_report_key(dev, BTN_RIGHT, right); 466 input_report_key(dev, BTN_MIDDLE, middle); 467 } 468 469 input_sync(dev); 470 return; 471 } 472 473 static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p) 474 { 475 f->left = !!(p[3] & 0x01); 476 f->right = !!(p[3] & 0x02); 477 f->middle = !!(p[3] & 0x04); 478 479 f->ts_left = !!(p[3] & 0x10); 480 f->ts_right = !!(p[3] & 0x20); 481 f->ts_middle = !!(p[3] & 0x40); 482 } 483 484 static void alps_decode_pinnacle(struct alps_fields *f, unsigned char *p) 485 { 486 f->first_mp = !!(p[4] & 0x40); 487 f->is_mp = !!(p[0] & 0x40); 488 489 f->fingers = (p[5] & 0x3) + 1; 490 f->x_map = ((p[4] & 0x7e) << 8) | 491 ((p[1] & 0x7f) << 2) | 492 ((p[0] & 0x30) >> 4); 493 f->y_map = ((p[3] & 0x70) << 4) | 494 ((p[2] & 0x7f) << 1) | 495 (p[4] & 0x01); 496 497 f->x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | 498 ((p[0] & 0x30) >> 4); 499 f->y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); 500 f->z = p[5] & 0x7f; 501 502 alps_decode_buttons_v3(f, p); 503 } 504 505 static void alps_decode_rushmore(struct alps_fields *f, unsigned char *p) 506 { 507 alps_decode_pinnacle(f, p); 508 509 f->x_map |= (p[5] & 0x10) << 11; 510 f->y_map |= (p[5] & 0x20) << 6; 511 } 512 513 static void alps_decode_dolphin(struct alps_fields *f, unsigned char *p) 514 { 515 f->first_mp = !!(p[0] & 0x02); 516 f->is_mp = !!(p[0] & 0x20); 517 518 f->fingers = ((p[0] & 0x6) >> 1 | 519 (p[0] & 0x10) >> 2); 520 f->x_map = ((p[2] & 0x60) >> 5) | 521 ((p[4] & 0x7f) << 2) | 522 ((p[5] & 0x7f) << 9) | 523 ((p[3] & 0x07) << 16) | 524 ((p[3] & 0x70) << 15) | 525 ((p[0] & 0x01) << 22); 526 f->y_map = (p[1] & 0x7f) | 527 ((p[2] & 0x1f) << 7); 528 529 f->x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7)); 530 f->y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3)); 531 f->z = (p[0] & 4) ? 0 : p[5] & 0x7f; 532 533 alps_decode_buttons_v3(f, p); 534 } 535 536 static void alps_process_touchpad_packet_v3(struct psmouse *psmouse) 537 { 538 struct alps_data *priv = psmouse->private; 539 unsigned char *packet = psmouse->packet; 540 struct input_dev *dev = psmouse->dev; 541 struct input_dev *dev2 = priv->dev2; 542 int x1 = 0, y1 = 0, x2 = 0, y2 = 0; 543 int fingers = 0, bmap_fingers; 544 struct alps_fields f; 545 546 priv->decode_fields(&f, packet); 547 548 /* 549 * There's no single feature of touchpad position and bitmap packets 550 * that can be used to distinguish between them. We rely on the fact 551 * that a bitmap packet should always follow a position packet with 552 * bit 6 of packet[4] set. 553 */ 554 if (priv->multi_packet) { 555 /* 556 * Sometimes a position packet will indicate a multi-packet 557 * sequence, but then what follows is another position 558 * packet. Check for this, and when it happens process the 559 * position packet as usual. 560 */ 561 if (f.is_mp) { 562 fingers = f.fingers; 563 bmap_fingers = alps_process_bitmap(priv, 564 f.x_map, f.y_map, 565 &x1, &y1, &x2, &y2); 566 567 /* 568 * We shouldn't report more than one finger if 569 * we don't have two coordinates. 570 */ 571 if (fingers > 1 && bmap_fingers < 2) 572 fingers = bmap_fingers; 573 574 /* Now process position packet */ 575 priv->decode_fields(&f, priv->multi_data); 576 } else { 577 priv->multi_packet = 0; 578 } 579 } 580 581 /* 582 * Bit 6 of byte 0 is not usually set in position packets. The only 583 * times it seems to be set is in situations where the data is 584 * suspect anyway, e.g. a palm resting flat on the touchpad. Given 585 * this combined with the fact that this bit is useful for filtering 586 * out misidentified bitmap packets, we reject anything with this 587 * bit set. 588 */ 589 if (f.is_mp) 590 return; 591 592 if (!priv->multi_packet && f.first_mp) { 593 priv->multi_packet = 1; 594 memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); 595 return; 596 } 597 598 priv->multi_packet = 0; 599 600 /* 601 * Sometimes the hardware sends a single packet with z = 0 602 * in the middle of a stream. Real releases generate packets 603 * with x, y, and z all zero, so these seem to be flukes. 604 * Ignore them. 605 */ 606 if (f.x && f.y && !f.z) 607 return; 608 609 /* 610 * If we don't have MT data or the bitmaps were empty, we have 611 * to rely on ST data. 612 */ 613 if (!fingers) { 614 x1 = f.x; 615 y1 = f.y; 616 fingers = f.z > 0 ? 1 : 0; 617 } 618 619 if (f.z >= 64) 620 input_report_key(dev, BTN_TOUCH, 1); 621 else 622 input_report_key(dev, BTN_TOUCH, 0); 623 624 alps_report_semi_mt_data(dev, fingers, x1, y1, x2, y2); 625 626 input_mt_report_finger_count(dev, fingers); 627 628 input_report_key(dev, BTN_LEFT, f.left); 629 input_report_key(dev, BTN_RIGHT, f.right); 630 input_report_key(dev, BTN_MIDDLE, f.middle); 631 632 if (f.z > 0) { 633 input_report_abs(dev, ABS_X, f.x); 634 input_report_abs(dev, ABS_Y, f.y); 635 } 636 input_report_abs(dev, ABS_PRESSURE, f.z); 637 638 input_sync(dev); 639 640 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) { 641 input_report_key(dev2, BTN_LEFT, f.ts_left); 642 input_report_key(dev2, BTN_RIGHT, f.ts_right); 643 input_report_key(dev2, BTN_MIDDLE, f.ts_middle); 644 input_sync(dev2); 645 } 646 } 647 648 static void alps_process_packet_v3(struct psmouse *psmouse) 649 { 650 unsigned char *packet = psmouse->packet; 651 652 /* 653 * v3 protocol packets come in three types, two representing 654 * touchpad data and one representing trackstick data. 655 * Trackstick packets seem to be distinguished by always 656 * having 0x3f in the last byte. This value has never been 657 * observed in the last byte of either of the other types 658 * of packets. 659 */ 660 if (packet[5] == 0x3f) { 661 alps_process_trackstick_packet_v3(psmouse); 662 return; 663 } 664 665 alps_process_touchpad_packet_v3(psmouse); 666 } 667 668 static void alps_process_packet_v6(struct psmouse *psmouse) 669 { 670 struct alps_data *priv = psmouse->private; 671 unsigned char *packet = psmouse->packet; 672 struct input_dev *dev = psmouse->dev; 673 struct input_dev *dev2 = priv->dev2; 674 int x, y, z, left, right, middle; 675 676 /* 677 * We can use Byte5 to distinguish if the packet is from Touchpad 678 * or Trackpoint. 679 * Touchpad: 0 - 0x7E 680 * Trackpoint: 0x7F 681 */ 682 if (packet[5] == 0x7F) { 683 /* It should be a DualPoint when received Trackpoint packet */ 684 if (!(priv->flags & ALPS_DUALPOINT)) 685 return; 686 687 /* Trackpoint packet */ 688 x = packet[1] | ((packet[3] & 0x20) << 2); 689 y = packet[2] | ((packet[3] & 0x40) << 1); 690 z = packet[4]; 691 left = packet[3] & 0x01; 692 right = packet[3] & 0x02; 693 middle = packet[3] & 0x04; 694 695 /* To prevent the cursor jump when finger lifted */ 696 if (x == 0x7F && y == 0x7F && z == 0x7F) 697 x = y = z = 0; 698 699 /* Divide 4 since trackpoint's speed is too fast */ 700 input_report_rel(dev2, REL_X, (char)x / 4); 701 input_report_rel(dev2, REL_Y, -((char)y / 4)); 702 703 input_report_key(dev2, BTN_LEFT, left); 704 input_report_key(dev2, BTN_RIGHT, right); 705 input_report_key(dev2, BTN_MIDDLE, middle); 706 707 input_sync(dev2); 708 return; 709 } 710 711 /* Touchpad packet */ 712 x = packet[1] | ((packet[3] & 0x78) << 4); 713 y = packet[2] | ((packet[4] & 0x78) << 4); 714 z = packet[5]; 715 left = packet[3] & 0x01; 716 right = packet[3] & 0x02; 717 718 if (z > 30) 719 input_report_key(dev, BTN_TOUCH, 1); 720 if (z < 25) 721 input_report_key(dev, BTN_TOUCH, 0); 722 723 if (z > 0) { 724 input_report_abs(dev, ABS_X, x); 725 input_report_abs(dev, ABS_Y, y); 726 } 727 728 input_report_abs(dev, ABS_PRESSURE, z); 729 input_report_key(dev, BTN_TOOL_FINGER, z > 0); 730 731 /* v6 touchpad does not have middle button */ 732 input_report_key(dev, BTN_LEFT, left); 733 input_report_key(dev, BTN_RIGHT, right); 734 735 input_sync(dev); 736 } 737 738 static void alps_process_packet_v4(struct psmouse *psmouse) 739 { 740 struct alps_data *priv = psmouse->private; 741 unsigned char *packet = psmouse->packet; 742 struct input_dev *dev = psmouse->dev; 743 int offset; 744 int x, y, z; 745 int left, right; 746 int x1, y1, x2, y2; 747 int fingers = 0; 748 unsigned int x_bitmap, y_bitmap; 749 750 /* 751 * v4 has a 6-byte encoding for bitmap data, but this data is 752 * broken up between 3 normal packets. Use priv->multi_packet to 753 * track our position in the bitmap packet. 754 */ 755 if (packet[6] & 0x40) { 756 /* sync, reset position */ 757 priv->multi_packet = 0; 758 } 759 760 if (WARN_ON_ONCE(priv->multi_packet > 2)) 761 return; 762 763 offset = 2 * priv->multi_packet; 764 priv->multi_data[offset] = packet[6]; 765 priv->multi_data[offset + 1] = packet[7]; 766 767 if (++priv->multi_packet > 2) { 768 priv->multi_packet = 0; 769 770 x_bitmap = ((priv->multi_data[2] & 0x1f) << 10) | 771 ((priv->multi_data[3] & 0x60) << 3) | 772 ((priv->multi_data[0] & 0x3f) << 2) | 773 ((priv->multi_data[1] & 0x60) >> 5); 774 y_bitmap = ((priv->multi_data[5] & 0x01) << 10) | 775 ((priv->multi_data[3] & 0x1f) << 5) | 776 (priv->multi_data[1] & 0x1f); 777 778 fingers = alps_process_bitmap(priv, x_bitmap, y_bitmap, 779 &x1, &y1, &x2, &y2); 780 781 /* Store MT data.*/ 782 priv->fingers = fingers; 783 priv->x1 = x1; 784 priv->x2 = x2; 785 priv->y1 = y1; 786 priv->y2 = y2; 787 } 788 789 left = packet[4] & 0x01; 790 right = packet[4] & 0x02; 791 792 x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) | 793 ((packet[0] & 0x30) >> 4); 794 y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f); 795 z = packet[5] & 0x7f; 796 797 /* 798 * If there were no contacts in the bitmap, use ST 799 * points in MT reports. 800 * If there were two contacts or more, report MT data. 801 */ 802 if (priv->fingers < 2) { 803 x1 = x; 804 y1 = y; 805 fingers = z > 0 ? 1 : 0; 806 } else { 807 fingers = priv->fingers; 808 x1 = priv->x1; 809 x2 = priv->x2; 810 y1 = priv->y1; 811 y2 = priv->y2; 812 } 813 814 if (z >= 64) 815 input_report_key(dev, BTN_TOUCH, 1); 816 else 817 input_report_key(dev, BTN_TOUCH, 0); 818 819 alps_report_semi_mt_data(dev, fingers, x1, y1, x2, y2); 820 821 input_mt_report_finger_count(dev, fingers); 822 823 input_report_key(dev, BTN_LEFT, left); 824 input_report_key(dev, BTN_RIGHT, right); 825 826 if (z > 0) { 827 input_report_abs(dev, ABS_X, x); 828 input_report_abs(dev, ABS_Y, y); 829 } 830 input_report_abs(dev, ABS_PRESSURE, z); 831 832 input_sync(dev); 833 } 834 835 static void alps_report_bare_ps2_packet(struct psmouse *psmouse, 836 unsigned char packet[], 837 bool report_buttons) 838 { 839 struct alps_data *priv = psmouse->private; 840 struct input_dev *dev2 = priv->dev2; 841 842 if (report_buttons) 843 alps_report_buttons(psmouse, dev2, psmouse->dev, 844 packet[0] & 1, packet[0] & 2, packet[0] & 4); 845 846 input_report_rel(dev2, REL_X, 847 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0); 848 input_report_rel(dev2, REL_Y, 849 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0); 850 851 input_sync(dev2); 852 } 853 854 static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse) 855 { 856 struct alps_data *priv = psmouse->private; 857 858 if (psmouse->pktcnt < 6) 859 return PSMOUSE_GOOD_DATA; 860 861 if (psmouse->pktcnt == 6) { 862 /* 863 * Start a timer to flush the packet if it ends up last 864 * 6-byte packet in the stream. Timer needs to fire 865 * psmouse core times out itself. 20 ms should be enough 866 * to decide if we are getting more data or not. 867 */ 868 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20)); 869 return PSMOUSE_GOOD_DATA; 870 } 871 872 del_timer(&priv->timer); 873 874 if (psmouse->packet[6] & 0x80) { 875 876 /* 877 * Highest bit is set - that means we either had 878 * complete ALPS packet and this is start of the 879 * next packet or we got garbage. 880 */ 881 882 if (((psmouse->packet[3] | 883 psmouse->packet[4] | 884 psmouse->packet[5]) & 0x80) || 885 (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) { 886 psmouse_dbg(psmouse, 887 "refusing packet %4ph (suspected interleaved ps/2)\n", 888 psmouse->packet + 3); 889 return PSMOUSE_BAD_DATA; 890 } 891 892 priv->process_packet(psmouse); 893 894 /* Continue with the next packet */ 895 psmouse->packet[0] = psmouse->packet[6]; 896 psmouse->pktcnt = 1; 897 898 } else { 899 900 /* 901 * High bit is 0 - that means that we indeed got a PS/2 902 * packet in the middle of ALPS packet. 903 * 904 * There is also possibility that we got 6-byte ALPS 905 * packet followed by 3-byte packet from trackpoint. We 906 * can not distinguish between these 2 scenarios but 907 * because the latter is unlikely to happen in course of 908 * normal operation (user would need to press all 909 * buttons on the pad and start moving trackpoint 910 * without touching the pad surface) we assume former. 911 * Even if we are wrong the wost thing that would happen 912 * the cursor would jump but we should not get protocol 913 * de-synchronization. 914 */ 915 916 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3], 917 false); 918 919 /* 920 * Continue with the standard ALPS protocol handling, 921 * but make sure we won't process it as an interleaved 922 * packet again, which may happen if all buttons are 923 * pressed. To avoid this let's reset the 4th bit which 924 * is normally 1. 925 */ 926 psmouse->packet[3] = psmouse->packet[6] & 0xf7; 927 psmouse->pktcnt = 4; 928 } 929 930 return PSMOUSE_GOOD_DATA; 931 } 932 933 static void alps_flush_packet(unsigned long data) 934 { 935 struct psmouse *psmouse = (struct psmouse *)data; 936 struct alps_data *priv = psmouse->private; 937 938 serio_pause_rx(psmouse->ps2dev.serio); 939 940 if (psmouse->pktcnt == psmouse->pktsize) { 941 942 /* 943 * We did not any more data in reasonable amount of time. 944 * Validate the last 3 bytes and process as a standard 945 * ALPS packet. 946 */ 947 if ((psmouse->packet[3] | 948 psmouse->packet[4] | 949 psmouse->packet[5]) & 0x80) { 950 psmouse_dbg(psmouse, 951 "refusing packet %3ph (suspected interleaved ps/2)\n", 952 psmouse->packet + 3); 953 } else { 954 priv->process_packet(psmouse); 955 } 956 psmouse->pktcnt = 0; 957 } 958 959 serio_continue_rx(psmouse->ps2dev.serio); 960 } 961 962 static psmouse_ret_t alps_process_byte(struct psmouse *psmouse) 963 { 964 struct alps_data *priv = psmouse->private; 965 966 if ((psmouse->packet[0] & 0xc8) == 0x08) { /* PS/2 packet */ 967 if (psmouse->pktcnt == 3) { 968 alps_report_bare_ps2_packet(psmouse, psmouse->packet, 969 true); 970 return PSMOUSE_FULL_PACKET; 971 } 972 return PSMOUSE_GOOD_DATA; 973 } 974 975 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */ 976 977 if ((priv->flags & ALPS_PS2_INTERLEAVED) && 978 psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) { 979 return alps_handle_interleaved_ps2(psmouse); 980 } 981 982 if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) { 983 psmouse_dbg(psmouse, 984 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n", 985 psmouse->packet[0], priv->mask0, priv->byte0); 986 return PSMOUSE_BAD_DATA; 987 } 988 989 /* Bytes 2 - pktsize should have 0 in the highest bit */ 990 if ((priv->proto_version < ALPS_PROTO_V5) && 991 psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize && 992 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) { 993 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 994 psmouse->pktcnt - 1, 995 psmouse->packet[psmouse->pktcnt - 1]); 996 return PSMOUSE_BAD_DATA; 997 } 998 999 if (psmouse->pktcnt == psmouse->pktsize) { 1000 priv->process_packet(psmouse); 1001 return PSMOUSE_FULL_PACKET; 1002 } 1003 1004 return PSMOUSE_GOOD_DATA; 1005 } 1006 1007 static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble) 1008 { 1009 struct ps2dev *ps2dev = &psmouse->ps2dev; 1010 struct alps_data *priv = psmouse->private; 1011 int command; 1012 unsigned char *param; 1013 unsigned char dummy[4]; 1014 1015 BUG_ON(nibble > 0xf); 1016 1017 command = priv->nibble_commands[nibble].command; 1018 param = (command & 0x0f00) ? 1019 dummy : (unsigned char *)&priv->nibble_commands[nibble].data; 1020 1021 if (ps2_command(ps2dev, param, command)) 1022 return -1; 1023 1024 return 0; 1025 } 1026 1027 static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr) 1028 { 1029 struct ps2dev *ps2dev = &psmouse->ps2dev; 1030 struct alps_data *priv = psmouse->private; 1031 int i, nibble; 1032 1033 if (ps2_command(ps2dev, NULL, priv->addr_command)) 1034 return -1; 1035 1036 for (i = 12; i >= 0; i -= 4) { 1037 nibble = (addr >> i) & 0xf; 1038 if (alps_command_mode_send_nibble(psmouse, nibble)) 1039 return -1; 1040 } 1041 1042 return 0; 1043 } 1044 1045 static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1046 { 1047 struct ps2dev *ps2dev = &psmouse->ps2dev; 1048 unsigned char param[4]; 1049 1050 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1051 return -1; 1052 1053 /* 1054 * The address being read is returned in the first two bytes 1055 * of the result. Check that this address matches the expected 1056 * address. 1057 */ 1058 if (addr != ((param[0] << 8) | param[1])) 1059 return -1; 1060 1061 return param[2]; 1062 } 1063 1064 static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1065 { 1066 if (alps_command_mode_set_addr(psmouse, addr)) 1067 return -1; 1068 return __alps_command_mode_read_reg(psmouse, addr); 1069 } 1070 1071 static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value) 1072 { 1073 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf)) 1074 return -1; 1075 if (alps_command_mode_send_nibble(psmouse, value & 0xf)) 1076 return -1; 1077 return 0; 1078 } 1079 1080 static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr, 1081 u8 value) 1082 { 1083 if (alps_command_mode_set_addr(psmouse, addr)) 1084 return -1; 1085 return __alps_command_mode_write_reg(psmouse, value); 1086 } 1087 1088 static int alps_rpt_cmd(struct psmouse *psmouse, int init_command, 1089 int repeated_command, unsigned char *param) 1090 { 1091 struct ps2dev *ps2dev = &psmouse->ps2dev; 1092 1093 param[0] = 0; 1094 if (init_command && ps2_command(ps2dev, param, init_command)) 1095 return -EIO; 1096 1097 if (ps2_command(ps2dev, NULL, repeated_command) || 1098 ps2_command(ps2dev, NULL, repeated_command) || 1099 ps2_command(ps2dev, NULL, repeated_command)) 1100 return -EIO; 1101 1102 param[0] = param[1] = param[2] = 0xff; 1103 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1104 return -EIO; 1105 1106 psmouse_dbg(psmouse, "%2.2X report: %3ph\n", 1107 repeated_command, param); 1108 return 0; 1109 } 1110 1111 static int alps_enter_command_mode(struct psmouse *psmouse) 1112 { 1113 unsigned char param[4]; 1114 1115 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) { 1116 psmouse_err(psmouse, "failed to enter command mode\n"); 1117 return -1; 1118 } 1119 1120 if ((param[0] != 0x88 || (param[1] != 0x07 && param[1] != 0x08)) && 1121 param[0] != 0x73) { 1122 psmouse_dbg(psmouse, 1123 "unknown response while entering command mode\n"); 1124 return -1; 1125 } 1126 return 0; 1127 } 1128 1129 static inline int alps_exit_command_mode(struct psmouse *psmouse) 1130 { 1131 struct ps2dev *ps2dev = &psmouse->ps2dev; 1132 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) 1133 return -1; 1134 return 0; 1135 } 1136 1137 /* 1138 * For DualPoint devices select the device that should respond to 1139 * subsequent commands. It looks like glidepad is behind stickpointer, 1140 * I'd thought it would be other way around... 1141 */ 1142 static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable) 1143 { 1144 struct ps2dev *ps2dev = &psmouse->ps2dev; 1145 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11; 1146 1147 if (ps2_command(ps2dev, NULL, cmd) || 1148 ps2_command(ps2dev, NULL, cmd) || 1149 ps2_command(ps2dev, NULL, cmd) || 1150 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1151 return -1; 1152 1153 /* we may get 3 more bytes, just ignore them */ 1154 ps2_drain(ps2dev, 3, 100); 1155 1156 return 0; 1157 } 1158 1159 static int alps_absolute_mode_v1_v2(struct psmouse *psmouse) 1160 { 1161 struct ps2dev *ps2dev = &psmouse->ps2dev; 1162 1163 /* Try ALPS magic knock - 4 disable before enable */ 1164 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1165 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1166 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1167 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1168 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) 1169 return -1; 1170 1171 /* 1172 * Switch mouse to poll (remote) mode so motion data will not 1173 * get in our way 1174 */ 1175 return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL); 1176 } 1177 1178 static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word) 1179 { 1180 int i, nibble; 1181 1182 /* 1183 * b0-b11 are valid bits, send sequence is inverse. 1184 * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1 1185 */ 1186 for (i = 0; i <= 8; i += 4) { 1187 nibble = (word >> i) & 0xf; 1188 if (alps_command_mode_send_nibble(psmouse, nibble)) 1189 return -1; 1190 } 1191 1192 return 0; 1193 } 1194 1195 static int alps_monitor_mode_write_reg(struct psmouse *psmouse, 1196 u16 addr, u16 value) 1197 { 1198 struct ps2dev *ps2dev = &psmouse->ps2dev; 1199 1200 /* 0x0A0 is the command to write the word */ 1201 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) || 1202 alps_monitor_mode_send_word(psmouse, 0x0A0) || 1203 alps_monitor_mode_send_word(psmouse, addr) || 1204 alps_monitor_mode_send_word(psmouse, value) || 1205 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1206 return -1; 1207 1208 return 0; 1209 } 1210 1211 static int alps_monitor_mode(struct psmouse *psmouse, bool enable) 1212 { 1213 struct ps2dev *ps2dev = &psmouse->ps2dev; 1214 1215 if (enable) { 1216 /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */ 1217 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 1218 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) || 1219 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1220 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1221 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1222 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1223 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1224 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO)) 1225 return -1; 1226 } else { 1227 /* EC to exit monitor mode */ 1228 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP)) 1229 return -1; 1230 } 1231 1232 return 0; 1233 } 1234 1235 static int alps_absolute_mode_v6(struct psmouse *psmouse) 1236 { 1237 u16 reg_val = 0x181; 1238 int ret = -1; 1239 1240 /* enter monitor mode, to write the register */ 1241 if (alps_monitor_mode(psmouse, true)) 1242 return -1; 1243 1244 ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val); 1245 1246 if (alps_monitor_mode(psmouse, false)) 1247 ret = -1; 1248 1249 return ret; 1250 } 1251 1252 static int alps_get_status(struct psmouse *psmouse, char *param) 1253 { 1254 /* Get status: 0xF5 0xF5 0xF5 0xE9 */ 1255 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param)) 1256 return -1; 1257 1258 return 0; 1259 } 1260 1261 /* 1262 * Turn touchpad tapping on or off. The sequences are: 1263 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable, 1264 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable. 1265 * My guess that 0xE9 (GetInfo) is here as a sync point. 1266 * For models that also have stickpointer (DualPoints) its tapping 1267 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but 1268 * we don't fiddle with it. 1269 */ 1270 static int alps_tap_mode(struct psmouse *psmouse, int enable) 1271 { 1272 struct ps2dev *ps2dev = &psmouse->ps2dev; 1273 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES; 1274 unsigned char tap_arg = enable ? 0x0A : 0x00; 1275 unsigned char param[4]; 1276 1277 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) || 1278 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1279 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1280 ps2_command(ps2dev, &tap_arg, cmd)) 1281 return -1; 1282 1283 if (alps_get_status(psmouse, param)) 1284 return -1; 1285 1286 return 0; 1287 } 1288 1289 /* 1290 * alps_poll() - poll the touchpad for current motion packet. 1291 * Used in resync. 1292 */ 1293 static int alps_poll(struct psmouse *psmouse) 1294 { 1295 struct alps_data *priv = psmouse->private; 1296 unsigned char buf[sizeof(psmouse->packet)]; 1297 bool poll_failed; 1298 1299 if (priv->flags & ALPS_PASS) 1300 alps_passthrough_mode_v2(psmouse, true); 1301 1302 poll_failed = ps2_command(&psmouse->ps2dev, buf, 1303 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0; 1304 1305 if (priv->flags & ALPS_PASS) 1306 alps_passthrough_mode_v2(psmouse, false); 1307 1308 if (poll_failed || (buf[0] & priv->mask0) != priv->byte0) 1309 return -1; 1310 1311 if ((psmouse->badbyte & 0xc8) == 0x08) { 1312 /* 1313 * Poll the track stick ... 1314 */ 1315 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8))) 1316 return -1; 1317 } 1318 1319 memcpy(psmouse->packet, buf, sizeof(buf)); 1320 return 0; 1321 } 1322 1323 static int alps_hw_init_v1_v2(struct psmouse *psmouse) 1324 { 1325 struct alps_data *priv = psmouse->private; 1326 1327 if ((priv->flags & ALPS_PASS) && 1328 alps_passthrough_mode_v2(psmouse, true)) { 1329 return -1; 1330 } 1331 1332 if (alps_tap_mode(psmouse, true)) { 1333 psmouse_warn(psmouse, "Failed to enable hardware tapping\n"); 1334 return -1; 1335 } 1336 1337 if (alps_absolute_mode_v1_v2(psmouse)) { 1338 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 1339 return -1; 1340 } 1341 1342 if ((priv->flags & ALPS_PASS) && 1343 alps_passthrough_mode_v2(psmouse, false)) { 1344 return -1; 1345 } 1346 1347 /* ALPS needs stream mode, otherwise it won't report any data */ 1348 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) { 1349 psmouse_err(psmouse, "Failed to enable stream mode\n"); 1350 return -1; 1351 } 1352 1353 return 0; 1354 } 1355 1356 static int alps_hw_init_v6(struct psmouse *psmouse) 1357 { 1358 unsigned char param[2] = {0xC8, 0x14}; 1359 1360 /* Enter passthrough mode to let trackpoint enter 6byte raw mode */ 1361 if (alps_passthrough_mode_v2(psmouse, true)) 1362 return -1; 1363 1364 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1365 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1366 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1367 ps2_command(&psmouse->ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 1368 ps2_command(&psmouse->ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 1369 return -1; 1370 1371 if (alps_passthrough_mode_v2(psmouse, false)) 1372 return -1; 1373 1374 if (alps_absolute_mode_v6(psmouse)) { 1375 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 1376 return -1; 1377 } 1378 1379 return 0; 1380 } 1381 1382 /* 1383 * Enable or disable passthrough mode to the trackstick. 1384 */ 1385 static int alps_passthrough_mode_v3(struct psmouse *psmouse, 1386 int reg_base, bool enable) 1387 { 1388 int reg_val, ret = -1; 1389 1390 if (alps_enter_command_mode(psmouse)) 1391 return -1; 1392 1393 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008); 1394 if (reg_val == -1) 1395 goto error; 1396 1397 if (enable) 1398 reg_val |= 0x01; 1399 else 1400 reg_val &= ~0x01; 1401 1402 ret = __alps_command_mode_write_reg(psmouse, reg_val); 1403 1404 error: 1405 if (alps_exit_command_mode(psmouse)) 1406 ret = -1; 1407 return ret; 1408 } 1409 1410 /* Must be in command mode when calling this function */ 1411 static int alps_absolute_mode_v3(struct psmouse *psmouse) 1412 { 1413 int reg_val; 1414 1415 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 1416 if (reg_val == -1) 1417 return -1; 1418 1419 reg_val |= 0x06; 1420 if (__alps_command_mode_write_reg(psmouse, reg_val)) 1421 return -1; 1422 1423 return 0; 1424 } 1425 1426 static int alps_probe_trackstick_v3(struct psmouse *psmouse, int reg_base) 1427 { 1428 int ret = -EIO, reg_val; 1429 1430 if (alps_enter_command_mode(psmouse)) 1431 goto error; 1432 1433 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08); 1434 if (reg_val == -1) 1435 goto error; 1436 1437 /* bit 7: trackstick is present */ 1438 ret = reg_val & 0x80 ? 0 : -ENODEV; 1439 1440 error: 1441 alps_exit_command_mode(psmouse); 1442 return ret; 1443 } 1444 1445 static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base) 1446 { 1447 struct ps2dev *ps2dev = &psmouse->ps2dev; 1448 int ret = 0; 1449 unsigned char param[4]; 1450 1451 if (alps_passthrough_mode_v3(psmouse, reg_base, true)) 1452 return -EIO; 1453 1454 /* 1455 * E7 report for the trackstick 1456 * 1457 * There have been reports of failures to seem to trace back 1458 * to the above trackstick check failing. When these occur 1459 * this E7 report fails, so when that happens we continue 1460 * with the assumption that there isn't a trackstick after 1461 * all. 1462 */ 1463 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) { 1464 psmouse_warn(psmouse, "trackstick E7 report failed\n"); 1465 ret = -ENODEV; 1466 } else { 1467 psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param); 1468 1469 /* 1470 * Not sure what this does, but it is absolutely 1471 * essential. Without it, the touchpad does not 1472 * work at all and the trackstick just emits normal 1473 * PS/2 packets. 1474 */ 1475 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1476 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1477 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1478 alps_command_mode_send_nibble(psmouse, 0x9) || 1479 alps_command_mode_send_nibble(psmouse, 0x4)) { 1480 psmouse_err(psmouse, 1481 "Error sending magic E6 sequence\n"); 1482 ret = -EIO; 1483 goto error; 1484 } 1485 1486 /* 1487 * This ensures the trackstick packets are in the format 1488 * supported by this driver. If bit 1 isn't set the packet 1489 * format is different. 1490 */ 1491 if (alps_enter_command_mode(psmouse) || 1492 alps_command_mode_write_reg(psmouse, 1493 reg_base + 0x08, 0x82) || 1494 alps_exit_command_mode(psmouse)) 1495 ret = -EIO; 1496 } 1497 1498 error: 1499 if (alps_passthrough_mode_v3(psmouse, reg_base, false)) 1500 ret = -EIO; 1501 1502 return ret; 1503 } 1504 1505 static int alps_hw_init_v3(struct psmouse *psmouse) 1506 { 1507 struct ps2dev *ps2dev = &psmouse->ps2dev; 1508 int reg_val; 1509 unsigned char param[4]; 1510 1511 reg_val = alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE); 1512 if (reg_val == -EIO) 1513 goto error; 1514 1515 if (reg_val == 0 && 1516 alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO) 1517 goto error; 1518 1519 if (alps_enter_command_mode(psmouse) || 1520 alps_absolute_mode_v3(psmouse)) { 1521 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 1522 goto error; 1523 } 1524 1525 reg_val = alps_command_mode_read_reg(psmouse, 0x0006); 1526 if (reg_val == -1) 1527 goto error; 1528 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 1529 goto error; 1530 1531 reg_val = alps_command_mode_read_reg(psmouse, 0x0007); 1532 if (reg_val == -1) 1533 goto error; 1534 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 1535 goto error; 1536 1537 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1) 1538 goto error; 1539 if (__alps_command_mode_write_reg(psmouse, 0x04)) 1540 goto error; 1541 1542 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1) 1543 goto error; 1544 if (__alps_command_mode_write_reg(psmouse, 0x03)) 1545 goto error; 1546 1547 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1) 1548 goto error; 1549 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03)) 1550 goto error; 1551 1552 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1) 1553 goto error; 1554 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04)) 1555 goto error; 1556 1557 alps_exit_command_mode(psmouse); 1558 1559 /* Set rate and enable data reporting */ 1560 param[0] = 0x64; 1561 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 1562 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 1563 psmouse_err(psmouse, "Failed to enable data reporting\n"); 1564 return -1; 1565 } 1566 1567 return 0; 1568 1569 error: 1570 /* 1571 * Leaving the touchpad in command mode will essentially render 1572 * it unusable until the machine reboots, so exit it here just 1573 * to be safe 1574 */ 1575 alps_exit_command_mode(psmouse); 1576 return -1; 1577 } 1578 1579 static int alps_hw_init_rushmore_v3(struct psmouse *psmouse) 1580 { 1581 struct alps_data *priv = psmouse->private; 1582 struct ps2dev *ps2dev = &psmouse->ps2dev; 1583 int reg_val, ret = -1; 1584 1585 if (priv->flags & ALPS_DUALPOINT) { 1586 reg_val = alps_setup_trackstick_v3(psmouse, 1587 ALPS_REG_BASE_RUSHMORE); 1588 if (reg_val == -EIO) 1589 goto error; 1590 if (reg_val == -ENODEV) 1591 priv->flags &= ~ALPS_DUALPOINT; 1592 } 1593 1594 if (alps_enter_command_mode(psmouse) || 1595 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 || 1596 alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00)) 1597 goto error; 1598 1599 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6); 1600 if (reg_val == -1) 1601 goto error; 1602 if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd)) 1603 goto error; 1604 1605 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 1606 goto error; 1607 1608 /* enter absolute mode */ 1609 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 1610 if (reg_val == -1) 1611 goto error; 1612 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 1613 goto error; 1614 1615 alps_exit_command_mode(psmouse); 1616 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 1617 1618 error: 1619 alps_exit_command_mode(psmouse); 1620 return ret; 1621 } 1622 1623 /* Must be in command mode when calling this function */ 1624 static int alps_absolute_mode_v4(struct psmouse *psmouse) 1625 { 1626 int reg_val; 1627 1628 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 1629 if (reg_val == -1) 1630 return -1; 1631 1632 reg_val |= 0x02; 1633 if (__alps_command_mode_write_reg(psmouse, reg_val)) 1634 return -1; 1635 1636 return 0; 1637 } 1638 1639 static int alps_hw_init_v4(struct psmouse *psmouse) 1640 { 1641 struct ps2dev *ps2dev = &psmouse->ps2dev; 1642 unsigned char param[4]; 1643 1644 if (alps_enter_command_mode(psmouse)) 1645 goto error; 1646 1647 if (alps_absolute_mode_v4(psmouse)) { 1648 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 1649 goto error; 1650 } 1651 1652 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c)) 1653 goto error; 1654 1655 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03)) 1656 goto error; 1657 1658 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03)) 1659 goto error; 1660 1661 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15)) 1662 goto error; 1663 1664 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01)) 1665 goto error; 1666 1667 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03)) 1668 goto error; 1669 1670 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03)) 1671 goto error; 1672 1673 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03)) 1674 goto error; 1675 1676 alps_exit_command_mode(psmouse); 1677 1678 /* 1679 * This sequence changes the output from a 9-byte to an 1680 * 8-byte format. All the same data seems to be present, 1681 * just in a more compact format. 1682 */ 1683 param[0] = 0xc8; 1684 param[1] = 0x64; 1685 param[2] = 0x50; 1686 if (ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 1687 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE) || 1688 ps2_command(ps2dev, ¶m[2], PSMOUSE_CMD_SETRATE) || 1689 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) 1690 return -1; 1691 1692 /* Set rate and enable data reporting */ 1693 param[0] = 0x64; 1694 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 1695 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 1696 psmouse_err(psmouse, "Failed to enable data reporting\n"); 1697 return -1; 1698 } 1699 1700 return 0; 1701 1702 error: 1703 /* 1704 * Leaving the touchpad in command mode will essentially render 1705 * it unusable until the machine reboots, so exit it here just 1706 * to be safe 1707 */ 1708 alps_exit_command_mode(psmouse); 1709 return -1; 1710 } 1711 1712 static int alps_hw_init_dolphin_v1(struct psmouse *psmouse) 1713 { 1714 struct ps2dev *ps2dev = &psmouse->ps2dev; 1715 unsigned char param[2]; 1716 1717 /* This is dolphin "v1" as empirically defined by florin9doi */ 1718 param[0] = 0x64; 1719 param[1] = 0x28; 1720 1721 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 1722 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 1723 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 1724 return -1; 1725 1726 return 0; 1727 } 1728 1729 static void alps_set_defaults(struct alps_data *priv) 1730 { 1731 priv->byte0 = 0x8f; 1732 priv->mask0 = 0x8f; 1733 priv->flags = ALPS_DUALPOINT; 1734 1735 priv->x_max = 2000; 1736 priv->y_max = 1400; 1737 priv->x_bits = 15; 1738 priv->y_bits = 11; 1739 1740 switch (priv->proto_version) { 1741 case ALPS_PROTO_V1: 1742 case ALPS_PROTO_V2: 1743 priv->hw_init = alps_hw_init_v1_v2; 1744 priv->process_packet = alps_process_packet_v1_v2; 1745 priv->set_abs_params = alps_set_abs_params_st; 1746 priv->x_max = 1023; 1747 priv->y_max = 767; 1748 break; 1749 case ALPS_PROTO_V3: 1750 priv->hw_init = alps_hw_init_v3; 1751 priv->process_packet = alps_process_packet_v3; 1752 priv->set_abs_params = alps_set_abs_params_mt; 1753 priv->decode_fields = alps_decode_pinnacle; 1754 priv->nibble_commands = alps_v3_nibble_commands; 1755 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 1756 break; 1757 case ALPS_PROTO_V4: 1758 priv->hw_init = alps_hw_init_v4; 1759 priv->process_packet = alps_process_packet_v4; 1760 priv->set_abs_params = alps_set_abs_params_mt; 1761 priv->nibble_commands = alps_v4_nibble_commands; 1762 priv->addr_command = PSMOUSE_CMD_DISABLE; 1763 break; 1764 case ALPS_PROTO_V5: 1765 priv->hw_init = alps_hw_init_dolphin_v1; 1766 priv->process_packet = alps_process_packet_v3; 1767 priv->decode_fields = alps_decode_dolphin; 1768 priv->set_abs_params = alps_set_abs_params_mt; 1769 priv->nibble_commands = alps_v3_nibble_commands; 1770 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 1771 priv->byte0 = 0xc8; 1772 priv->mask0 = 0xc8; 1773 priv->flags = 0; 1774 priv->x_max = 1360; 1775 priv->y_max = 660; 1776 priv->x_bits = 23; 1777 priv->y_bits = 12; 1778 break; 1779 case ALPS_PROTO_V6: 1780 priv->hw_init = alps_hw_init_v6; 1781 priv->process_packet = alps_process_packet_v6; 1782 priv->set_abs_params = alps_set_abs_params_st; 1783 priv->nibble_commands = alps_v6_nibble_commands; 1784 priv->x_max = 2047; 1785 priv->y_max = 1535; 1786 break; 1787 } 1788 } 1789 1790 static int alps_match_table(struct psmouse *psmouse, struct alps_data *priv, 1791 unsigned char *e7, unsigned char *ec) 1792 { 1793 const struct alps_model_info *model; 1794 int i; 1795 1796 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) { 1797 model = &alps_model_data[i]; 1798 1799 if (!memcmp(e7, model->signature, sizeof(model->signature)) && 1800 (!model->command_mode_resp || 1801 model->command_mode_resp == ec[2])) { 1802 1803 priv->proto_version = model->proto_version; 1804 alps_set_defaults(priv); 1805 1806 priv->flags = model->flags; 1807 priv->byte0 = model->byte0; 1808 priv->mask0 = model->mask0; 1809 1810 return 0; 1811 } 1812 } 1813 1814 return -EINVAL; 1815 } 1816 1817 static int alps_identify(struct psmouse *psmouse, struct alps_data *priv) 1818 { 1819 unsigned char e6[4], e7[4], ec[4]; 1820 1821 /* 1822 * First try "E6 report". 1823 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed. 1824 * The bits 0-2 of the first byte will be 1s if some buttons are 1825 * pressed. 1826 */ 1827 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 1828 PSMOUSE_CMD_SETSCALE11, e6)) 1829 return -EIO; 1830 1831 if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100)) 1832 return -EINVAL; 1833 1834 /* 1835 * Now get the "E7" and "EC" reports. These will uniquely identify 1836 * most ALPS touchpads. 1837 */ 1838 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 1839 PSMOUSE_CMD_SETSCALE21, e7) || 1840 alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 1841 PSMOUSE_CMD_RESET_WRAP, ec) || 1842 alps_exit_command_mode(psmouse)) 1843 return -EIO; 1844 1845 if (alps_match_table(psmouse, priv, e7, ec) == 0) { 1846 return 0; 1847 } else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 && 1848 ec[0] == 0x73 && ec[1] == 0x01) { 1849 priv->proto_version = ALPS_PROTO_V5; 1850 alps_set_defaults(priv); 1851 1852 return 0; 1853 } else if (ec[0] == 0x88 && ec[1] == 0x08) { 1854 priv->proto_version = ALPS_PROTO_V3; 1855 alps_set_defaults(priv); 1856 1857 priv->hw_init = alps_hw_init_rushmore_v3; 1858 priv->decode_fields = alps_decode_rushmore; 1859 priv->x_bits = 16; 1860 priv->y_bits = 12; 1861 1862 /* hack to make addr_command, nibble_command available */ 1863 psmouse->private = priv; 1864 1865 if (alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_RUSHMORE)) 1866 priv->flags &= ~ALPS_DUALPOINT; 1867 1868 return 0; 1869 } else if (ec[0] == 0x88 && ec[1] == 0x07 && 1870 ec[2] >= 0x90 && ec[2] <= 0x9d) { 1871 priv->proto_version = ALPS_PROTO_V3; 1872 alps_set_defaults(priv); 1873 1874 return 0; 1875 } 1876 1877 psmouse_info(psmouse, 1878 "Unknown ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec); 1879 1880 return -EINVAL; 1881 } 1882 1883 static int alps_reconnect(struct psmouse *psmouse) 1884 { 1885 struct alps_data *priv = psmouse->private; 1886 1887 psmouse_reset(psmouse); 1888 1889 if (alps_identify(psmouse, priv) < 0) 1890 return -1; 1891 1892 return priv->hw_init(psmouse); 1893 } 1894 1895 static void alps_disconnect(struct psmouse *psmouse) 1896 { 1897 struct alps_data *priv = psmouse->private; 1898 1899 psmouse_reset(psmouse); 1900 del_timer_sync(&priv->timer); 1901 input_unregister_device(priv->dev2); 1902 kfree(priv); 1903 } 1904 1905 static void alps_set_abs_params_st(struct alps_data *priv, 1906 struct input_dev *dev1) 1907 { 1908 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0); 1909 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0); 1910 } 1911 1912 static void alps_set_abs_params_mt(struct alps_data *priv, 1913 struct input_dev *dev1) 1914 { 1915 set_bit(INPUT_PROP_SEMI_MT, dev1->propbit); 1916 input_mt_init_slots(dev1, 2, 0); 1917 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0); 1918 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0); 1919 1920 set_bit(BTN_TOOL_DOUBLETAP, dev1->keybit); 1921 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit); 1922 set_bit(BTN_TOOL_QUADTAP, dev1->keybit); 1923 1924 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0); 1925 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0); 1926 } 1927 1928 int alps_init(struct psmouse *psmouse) 1929 { 1930 struct alps_data *priv; 1931 struct input_dev *dev1 = psmouse->dev, *dev2; 1932 1933 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL); 1934 dev2 = input_allocate_device(); 1935 if (!priv || !dev2) 1936 goto init_fail; 1937 1938 priv->dev2 = dev2; 1939 setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse); 1940 1941 psmouse->private = priv; 1942 1943 psmouse_reset(psmouse); 1944 1945 if (alps_identify(psmouse, priv) < 0) 1946 goto init_fail; 1947 1948 if (priv->hw_init(psmouse)) 1949 goto init_fail; 1950 1951 /* 1952 * Undo part of setup done for us by psmouse core since touchpad 1953 * is not a relative device. 1954 */ 1955 __clear_bit(EV_REL, dev1->evbit); 1956 __clear_bit(REL_X, dev1->relbit); 1957 __clear_bit(REL_Y, dev1->relbit); 1958 1959 /* 1960 * Now set up our capabilities. 1961 */ 1962 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY); 1963 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH); 1964 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER); 1965 dev1->keybit[BIT_WORD(BTN_LEFT)] |= 1966 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); 1967 1968 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS); 1969 1970 priv->set_abs_params(priv, dev1); 1971 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 1972 1973 if (priv->flags & ALPS_WHEEL) { 1974 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL); 1975 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL); 1976 } 1977 1978 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 1979 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD); 1980 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK); 1981 } 1982 1983 if (priv->flags & ALPS_FOUR_BUTTONS) { 1984 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0); 1985 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1); 1986 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2); 1987 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3); 1988 } else { 1989 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE); 1990 } 1991 1992 snprintf(priv->phys, sizeof(priv->phys), "%s/input1", psmouse->ps2dev.serio->phys); 1993 dev2->phys = priv->phys; 1994 dev2->name = (priv->flags & ALPS_DUALPOINT) ? 1995 "DualPoint Stick" : "ALPS PS/2 Device"; 1996 dev2->id.bustype = BUS_I8042; 1997 dev2->id.vendor = 0x0002; 1998 dev2->id.product = PSMOUSE_ALPS; 1999 dev2->id.version = 0x0000; 2000 dev2->dev.parent = &psmouse->ps2dev.serio->dev; 2001 2002 dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); 2003 dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); 2004 dev2->keybit[BIT_WORD(BTN_LEFT)] = 2005 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); 2006 2007 if (input_register_device(priv->dev2)) 2008 goto init_fail; 2009 2010 psmouse->protocol_handler = alps_process_byte; 2011 psmouse->poll = alps_poll; 2012 psmouse->disconnect = alps_disconnect; 2013 psmouse->reconnect = alps_reconnect; 2014 psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6; 2015 2016 /* We are having trouble resyncing ALPS touchpads so disable it for now */ 2017 psmouse->resync_time = 0; 2018 2019 return 0; 2020 2021 init_fail: 2022 psmouse_reset(psmouse); 2023 input_free_device(dev2); 2024 kfree(priv); 2025 psmouse->private = NULL; 2026 return -1; 2027 } 2028 2029 int alps_detect(struct psmouse *psmouse, bool set_properties) 2030 { 2031 struct alps_data dummy; 2032 2033 if (alps_identify(psmouse, &dummy) < 0) 2034 return -1; 2035 2036 if (set_properties) { 2037 psmouse->vendor = "ALPS"; 2038 psmouse->name = dummy.flags & ALPS_DUALPOINT ? 2039 "DualPoint TouchPad" : "GlidePoint"; 2040 psmouse->model = dummy.proto_version << 8; 2041 } 2042 return 0; 2043 } 2044 2045