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 for V5 protocols. Return value is null. 281 * 282 * The bitmaps don't have enough data to track fingers, so this function 283 * only generates points representing a bounding box of at most two contacts. 284 * These two points are returned in x1, y1, x2, and y2. 285 */ 286 static void alps_process_bitmap_dolphin(struct alps_data *priv, 287 struct alps_fields *fields, 288 int *x1, int *y1, int *x2, int *y2) 289 { 290 int box_middle_x, box_middle_y; 291 unsigned int x_map, y_map; 292 unsigned char start_bit, end_bit; 293 unsigned char x_msb, x_lsb, y_msb, y_lsb; 294 295 x_map = fields->x_map; 296 y_map = fields->y_map; 297 298 if (!x_map || !y_map) 299 return; 300 301 /* Get Most-significant and Least-significant bit */ 302 x_msb = fls(x_map); 303 x_lsb = ffs(x_map); 304 y_msb = fls(y_map); 305 y_lsb = ffs(y_map); 306 307 /* Most-significant bit should never exceed max sensor line number */ 308 if (x_msb > priv->x_bits || y_msb > priv->y_bits) 309 return; 310 311 *x1 = *y1 = *x2 = *y2 = 0; 312 313 if (fields->fingers > 1) { 314 start_bit = priv->x_bits - x_msb; 315 end_bit = priv->x_bits - x_lsb; 316 box_middle_x = (priv->x_max * (start_bit + end_bit)) / 317 (2 * (priv->x_bits - 1)); 318 319 start_bit = y_lsb - 1; 320 end_bit = y_msb - 1; 321 box_middle_y = (priv->y_max * (start_bit + end_bit)) / 322 (2 * (priv->y_bits - 1)); 323 *x1 = fields->x; 324 *y1 = fields->y; 325 *x2 = 2 * box_middle_x - *x1; 326 *y2 = 2 * box_middle_y - *y1; 327 } 328 } 329 330 /* 331 * Process bitmap data from v3 and v4 protocols. Returns the number of 332 * fingers detected. A return value of 0 means at least one of the 333 * bitmaps was empty. 334 * 335 * The bitmaps don't have enough data to track fingers, so this function 336 * only generates points representing a bounding box of all contacts. 337 * These points are returned in x1, y1, x2, and y2 when the return value 338 * is greater than 0. 339 */ 340 static int alps_process_bitmap(struct alps_data *priv, 341 unsigned int x_map, unsigned int y_map, 342 int *x1, int *y1, int *x2, int *y2) 343 { 344 struct alps_bitmap_point { 345 int start_bit; 346 int num_bits; 347 }; 348 349 int fingers_x = 0, fingers_y = 0, fingers; 350 int i, bit, prev_bit; 351 struct alps_bitmap_point x_low = {0,}, x_high = {0,}; 352 struct alps_bitmap_point y_low = {0,}, y_high = {0,}; 353 struct alps_bitmap_point *point; 354 355 if (!x_map || !y_map) 356 return 0; 357 358 *x1 = *y1 = *x2 = *y2 = 0; 359 360 prev_bit = 0; 361 point = &x_low; 362 for (i = 0; x_map != 0; i++, x_map >>= 1) { 363 bit = x_map & 1; 364 if (bit) { 365 if (!prev_bit) { 366 point->start_bit = i; 367 fingers_x++; 368 } 369 point->num_bits++; 370 } else { 371 if (prev_bit) 372 point = &x_high; 373 else 374 point->num_bits = 0; 375 } 376 prev_bit = bit; 377 } 378 379 /* 380 * y bitmap is reversed for what we need (lower positions are in 381 * higher bits), so we process from the top end. 382 */ 383 y_map = y_map << (sizeof(y_map) * BITS_PER_BYTE - priv->y_bits); 384 prev_bit = 0; 385 point = &y_low; 386 for (i = 0; y_map != 0; i++, y_map <<= 1) { 387 bit = y_map & (1 << (sizeof(y_map) * BITS_PER_BYTE - 1)); 388 if (bit) { 389 if (!prev_bit) { 390 point->start_bit = i; 391 fingers_y++; 392 } 393 point->num_bits++; 394 } else { 395 if (prev_bit) 396 point = &y_high; 397 else 398 point->num_bits = 0; 399 } 400 prev_bit = bit; 401 } 402 403 /* 404 * Fingers can overlap, so we use the maximum count of fingers 405 * on either axis as the finger count. 406 */ 407 fingers = max(fingers_x, fingers_y); 408 409 /* 410 * If total fingers is > 1 but either axis reports only a single 411 * contact, we have overlapping or adjacent fingers. For the 412 * purposes of creating a bounding box, divide the single contact 413 * (roughly) equally between the two points. 414 */ 415 if (fingers > 1) { 416 if (fingers_x == 1) { 417 i = x_low.num_bits / 2; 418 x_low.num_bits = x_low.num_bits - i; 419 x_high.start_bit = x_low.start_bit + i; 420 x_high.num_bits = max(i, 1); 421 } else if (fingers_y == 1) { 422 i = y_low.num_bits / 2; 423 y_low.num_bits = y_low.num_bits - i; 424 y_high.start_bit = y_low.start_bit + i; 425 y_high.num_bits = max(i, 1); 426 } 427 } 428 429 *x1 = (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) / 430 (2 * (priv->x_bits - 1)); 431 *y1 = (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) / 432 (2 * (priv->y_bits - 1)); 433 434 if (fingers > 1) { 435 *x2 = (priv->x_max * 436 (2 * x_high.start_bit + x_high.num_bits - 1)) / 437 (2 * (priv->x_bits - 1)); 438 *y2 = (priv->y_max * 439 (2 * y_high.start_bit + y_high.num_bits - 1)) / 440 (2 * (priv->y_bits - 1)); 441 } 442 443 return fingers; 444 } 445 446 static void alps_set_slot(struct input_dev *dev, int slot, bool active, 447 int x, int y) 448 { 449 input_mt_slot(dev, slot); 450 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active); 451 if (active) { 452 input_report_abs(dev, ABS_MT_POSITION_X, x); 453 input_report_abs(dev, ABS_MT_POSITION_Y, y); 454 } 455 } 456 457 static void alps_report_semi_mt_data(struct input_dev *dev, int num_fingers, 458 int x1, int y1, int x2, int y2) 459 { 460 alps_set_slot(dev, 0, num_fingers != 0, x1, y1); 461 alps_set_slot(dev, 1, num_fingers == 2, x2, y2); 462 } 463 464 static void alps_process_trackstick_packet_v3(struct psmouse *psmouse) 465 { 466 struct alps_data *priv = psmouse->private; 467 unsigned char *packet = psmouse->packet; 468 struct input_dev *dev = priv->dev2; 469 int x, y, z, left, right, middle; 470 471 /* Sanity check packet */ 472 if (!(packet[0] & 0x40)) { 473 psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n"); 474 return; 475 } 476 477 /* 478 * There's a special packet that seems to indicate the end 479 * of a stream of trackstick data. Filter these out. 480 */ 481 if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f) 482 return; 483 484 x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f)); 485 y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f)); 486 z = (packet[4] & 0x7c) >> 2; 487 488 /* 489 * The x and y values tend to be quite large, and when used 490 * alone the trackstick is difficult to use. Scale them down 491 * to compensate. 492 */ 493 x /= 8; 494 y /= 8; 495 496 input_report_rel(dev, REL_X, x); 497 input_report_rel(dev, REL_Y, -y); 498 499 /* 500 * Most ALPS models report the trackstick buttons in the touchpad 501 * packets, but a few report them here. No reliable way has been 502 * found to differentiate between the models upfront, so we enable 503 * the quirk in response to seeing a button press in the trackstick 504 * packet. 505 */ 506 left = packet[3] & 0x01; 507 right = packet[3] & 0x02; 508 middle = packet[3] & 0x04; 509 510 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) && 511 (left || right || middle)) 512 priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS; 513 514 if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) { 515 input_report_key(dev, BTN_LEFT, left); 516 input_report_key(dev, BTN_RIGHT, right); 517 input_report_key(dev, BTN_MIDDLE, middle); 518 } 519 520 input_sync(dev); 521 return; 522 } 523 524 static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p) 525 { 526 f->left = !!(p[3] & 0x01); 527 f->right = !!(p[3] & 0x02); 528 f->middle = !!(p[3] & 0x04); 529 530 f->ts_left = !!(p[3] & 0x10); 531 f->ts_right = !!(p[3] & 0x20); 532 f->ts_middle = !!(p[3] & 0x40); 533 } 534 535 static void alps_decode_pinnacle(struct alps_fields *f, unsigned char *p, 536 struct psmouse *psmouse) 537 { 538 f->first_mp = !!(p[4] & 0x40); 539 f->is_mp = !!(p[0] & 0x40); 540 541 f->fingers = (p[5] & 0x3) + 1; 542 f->x_map = ((p[4] & 0x7e) << 8) | 543 ((p[1] & 0x7f) << 2) | 544 ((p[0] & 0x30) >> 4); 545 f->y_map = ((p[3] & 0x70) << 4) | 546 ((p[2] & 0x7f) << 1) | 547 (p[4] & 0x01); 548 549 f->x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | 550 ((p[0] & 0x30) >> 4); 551 f->y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); 552 f->z = p[5] & 0x7f; 553 554 alps_decode_buttons_v3(f, p); 555 } 556 557 static void alps_decode_rushmore(struct alps_fields *f, unsigned char *p, 558 struct psmouse *psmouse) 559 { 560 alps_decode_pinnacle(f, p, psmouse); 561 562 f->x_map |= (p[5] & 0x10) << 11; 563 f->y_map |= (p[5] & 0x20) << 6; 564 } 565 566 static void alps_decode_dolphin(struct alps_fields *f, unsigned char *p, 567 struct psmouse *psmouse) 568 { 569 u64 palm_data = 0; 570 struct alps_data *priv = psmouse->private; 571 572 f->first_mp = !!(p[0] & 0x02); 573 f->is_mp = !!(p[0] & 0x20); 574 575 if (!f->is_mp) { 576 f->x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7)); 577 f->y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3)); 578 f->z = (p[0] & 4) ? 0 : p[5] & 0x7f; 579 alps_decode_buttons_v3(f, p); 580 } else { 581 f->fingers = ((p[0] & 0x6) >> 1 | 582 (p[0] & 0x10) >> 2); 583 584 palm_data = (p[1] & 0x7f) | 585 ((p[2] & 0x7f) << 7) | 586 ((p[4] & 0x7f) << 14) | 587 ((p[5] & 0x7f) << 21) | 588 ((p[3] & 0x07) << 28) | 589 (((u64)p[3] & 0x70) << 27) | 590 (((u64)p[0] & 0x01) << 34); 591 592 /* Y-profile is stored in P(0) to p(n-1), n = y_bits; */ 593 f->y_map = palm_data & (BIT(priv->y_bits) - 1); 594 595 /* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */ 596 f->x_map = (palm_data >> priv->y_bits) & 597 (BIT(priv->x_bits) - 1); 598 } 599 } 600 601 static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse) 602 { 603 struct alps_data *priv = psmouse->private; 604 unsigned char *packet = psmouse->packet; 605 struct input_dev *dev = psmouse->dev; 606 struct input_dev *dev2 = priv->dev2; 607 int x1 = 0, y1 = 0, x2 = 0, y2 = 0; 608 int fingers = 0, bmap_fn; 609 struct alps_fields f = {0}; 610 611 priv->decode_fields(&f, packet, psmouse); 612 613 /* 614 * There's no single feature of touchpad position and bitmap packets 615 * that can be used to distinguish between them. We rely on the fact 616 * that a bitmap packet should always follow a position packet with 617 * bit 6 of packet[4] set. 618 */ 619 if (priv->multi_packet) { 620 /* 621 * Sometimes a position packet will indicate a multi-packet 622 * sequence, but then what follows is another position 623 * packet. Check for this, and when it happens process the 624 * position packet as usual. 625 */ 626 if (f.is_mp) { 627 fingers = f.fingers; 628 if (priv->proto_version == ALPS_PROTO_V3) { 629 bmap_fn = alps_process_bitmap(priv, f.x_map, 630 f.y_map, &x1, &y1, 631 &x2, &y2); 632 633 /* 634 * We shouldn't report more than one finger if 635 * we don't have two coordinates. 636 */ 637 if (fingers > 1 && bmap_fn < 2) 638 fingers = bmap_fn; 639 640 /* Now process position packet */ 641 priv->decode_fields(&f, priv->multi_data, 642 psmouse); 643 } else { 644 /* 645 * Because Dolphin uses position packet's 646 * coordinate data as Pt1 and uses it to 647 * calculate Pt2, so we need to do position 648 * packet decode first. 649 */ 650 priv->decode_fields(&f, priv->multi_data, 651 psmouse); 652 653 /* 654 * Since Dolphin's finger number is reliable, 655 * there is no need to compare with bmap_fn. 656 */ 657 alps_process_bitmap_dolphin(priv, &f, &x1, &y1, 658 &x2, &y2); 659 } 660 } else { 661 priv->multi_packet = 0; 662 } 663 } 664 665 /* 666 * Bit 6 of byte 0 is not usually set in position packets. The only 667 * times it seems to be set is in situations where the data is 668 * suspect anyway, e.g. a palm resting flat on the touchpad. Given 669 * this combined with the fact that this bit is useful for filtering 670 * out misidentified bitmap packets, we reject anything with this 671 * bit set. 672 */ 673 if (f.is_mp) 674 return; 675 676 if (!priv->multi_packet && f.first_mp) { 677 priv->multi_packet = 1; 678 memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); 679 return; 680 } 681 682 priv->multi_packet = 0; 683 684 /* 685 * Sometimes the hardware sends a single packet with z = 0 686 * in the middle of a stream. Real releases generate packets 687 * with x, y, and z all zero, so these seem to be flukes. 688 * Ignore them. 689 */ 690 if (f.x && f.y && !f.z) 691 return; 692 693 /* 694 * If we don't have MT data or the bitmaps were empty, we have 695 * to rely on ST data. 696 */ 697 if (!fingers) { 698 x1 = f.x; 699 y1 = f.y; 700 fingers = f.z > 0 ? 1 : 0; 701 } 702 703 if (f.z >= 64) 704 input_report_key(dev, BTN_TOUCH, 1); 705 else 706 input_report_key(dev, BTN_TOUCH, 0); 707 708 alps_report_semi_mt_data(dev, fingers, x1, y1, x2, y2); 709 710 input_mt_report_finger_count(dev, fingers); 711 712 input_report_key(dev, BTN_LEFT, f.left); 713 input_report_key(dev, BTN_RIGHT, f.right); 714 input_report_key(dev, BTN_MIDDLE, f.middle); 715 716 if (f.z > 0) { 717 input_report_abs(dev, ABS_X, f.x); 718 input_report_abs(dev, ABS_Y, f.y); 719 } 720 input_report_abs(dev, ABS_PRESSURE, f.z); 721 722 input_sync(dev); 723 724 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) { 725 input_report_key(dev2, BTN_LEFT, f.ts_left); 726 input_report_key(dev2, BTN_RIGHT, f.ts_right); 727 input_report_key(dev2, BTN_MIDDLE, f.ts_middle); 728 input_sync(dev2); 729 } 730 } 731 732 static void alps_process_packet_v3(struct psmouse *psmouse) 733 { 734 unsigned char *packet = psmouse->packet; 735 736 /* 737 * v3 protocol packets come in three types, two representing 738 * touchpad data and one representing trackstick data. 739 * Trackstick packets seem to be distinguished by always 740 * having 0x3f in the last byte. This value has never been 741 * observed in the last byte of either of the other types 742 * of packets. 743 */ 744 if (packet[5] == 0x3f) { 745 alps_process_trackstick_packet_v3(psmouse); 746 return; 747 } 748 749 alps_process_touchpad_packet_v3_v5(psmouse); 750 } 751 752 static void alps_process_packet_v6(struct psmouse *psmouse) 753 { 754 struct alps_data *priv = psmouse->private; 755 unsigned char *packet = psmouse->packet; 756 struct input_dev *dev = psmouse->dev; 757 struct input_dev *dev2 = priv->dev2; 758 int x, y, z, left, right, middle; 759 760 /* 761 * We can use Byte5 to distinguish if the packet is from Touchpad 762 * or Trackpoint. 763 * Touchpad: 0 - 0x7E 764 * Trackpoint: 0x7F 765 */ 766 if (packet[5] == 0x7F) { 767 /* It should be a DualPoint when received Trackpoint packet */ 768 if (!(priv->flags & ALPS_DUALPOINT)) 769 return; 770 771 /* Trackpoint packet */ 772 x = packet[1] | ((packet[3] & 0x20) << 2); 773 y = packet[2] | ((packet[3] & 0x40) << 1); 774 z = packet[4]; 775 left = packet[3] & 0x01; 776 right = packet[3] & 0x02; 777 middle = packet[3] & 0x04; 778 779 /* To prevent the cursor jump when finger lifted */ 780 if (x == 0x7F && y == 0x7F && z == 0x7F) 781 x = y = z = 0; 782 783 /* Divide 4 since trackpoint's speed is too fast */ 784 input_report_rel(dev2, REL_X, (char)x / 4); 785 input_report_rel(dev2, REL_Y, -((char)y / 4)); 786 787 input_report_key(dev2, BTN_LEFT, left); 788 input_report_key(dev2, BTN_RIGHT, right); 789 input_report_key(dev2, BTN_MIDDLE, middle); 790 791 input_sync(dev2); 792 return; 793 } 794 795 /* Touchpad packet */ 796 x = packet[1] | ((packet[3] & 0x78) << 4); 797 y = packet[2] | ((packet[4] & 0x78) << 4); 798 z = packet[5]; 799 left = packet[3] & 0x01; 800 right = packet[3] & 0x02; 801 802 if (z > 30) 803 input_report_key(dev, BTN_TOUCH, 1); 804 if (z < 25) 805 input_report_key(dev, BTN_TOUCH, 0); 806 807 if (z > 0) { 808 input_report_abs(dev, ABS_X, x); 809 input_report_abs(dev, ABS_Y, y); 810 } 811 812 input_report_abs(dev, ABS_PRESSURE, z); 813 input_report_key(dev, BTN_TOOL_FINGER, z > 0); 814 815 /* v6 touchpad does not have middle button */ 816 input_report_key(dev, BTN_LEFT, left); 817 input_report_key(dev, BTN_RIGHT, right); 818 819 input_sync(dev); 820 } 821 822 static void alps_process_packet_v4(struct psmouse *psmouse) 823 { 824 struct alps_data *priv = psmouse->private; 825 unsigned char *packet = psmouse->packet; 826 struct input_dev *dev = psmouse->dev; 827 int offset; 828 int x, y, z; 829 int left, right; 830 int x1, y1, x2, y2; 831 int fingers = 0; 832 unsigned int x_bitmap, y_bitmap; 833 834 /* 835 * v4 has a 6-byte encoding for bitmap data, but this data is 836 * broken up between 3 normal packets. Use priv->multi_packet to 837 * track our position in the bitmap packet. 838 */ 839 if (packet[6] & 0x40) { 840 /* sync, reset position */ 841 priv->multi_packet = 0; 842 } 843 844 if (WARN_ON_ONCE(priv->multi_packet > 2)) 845 return; 846 847 offset = 2 * priv->multi_packet; 848 priv->multi_data[offset] = packet[6]; 849 priv->multi_data[offset + 1] = packet[7]; 850 851 if (++priv->multi_packet > 2) { 852 priv->multi_packet = 0; 853 854 x_bitmap = ((priv->multi_data[2] & 0x1f) << 10) | 855 ((priv->multi_data[3] & 0x60) << 3) | 856 ((priv->multi_data[0] & 0x3f) << 2) | 857 ((priv->multi_data[1] & 0x60) >> 5); 858 y_bitmap = ((priv->multi_data[5] & 0x01) << 10) | 859 ((priv->multi_data[3] & 0x1f) << 5) | 860 (priv->multi_data[1] & 0x1f); 861 862 fingers = alps_process_bitmap(priv, x_bitmap, y_bitmap, 863 &x1, &y1, &x2, &y2); 864 865 /* Store MT data.*/ 866 priv->fingers = fingers; 867 priv->x1 = x1; 868 priv->x2 = x2; 869 priv->y1 = y1; 870 priv->y2 = y2; 871 } 872 873 left = packet[4] & 0x01; 874 right = packet[4] & 0x02; 875 876 x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) | 877 ((packet[0] & 0x30) >> 4); 878 y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f); 879 z = packet[5] & 0x7f; 880 881 /* 882 * If there were no contacts in the bitmap, use ST 883 * points in MT reports. 884 * If there were two contacts or more, report MT data. 885 */ 886 if (priv->fingers < 2) { 887 x1 = x; 888 y1 = y; 889 fingers = z > 0 ? 1 : 0; 890 } else { 891 fingers = priv->fingers; 892 x1 = priv->x1; 893 x2 = priv->x2; 894 y1 = priv->y1; 895 y2 = priv->y2; 896 } 897 898 if (z >= 64) 899 input_report_key(dev, BTN_TOUCH, 1); 900 else 901 input_report_key(dev, BTN_TOUCH, 0); 902 903 alps_report_semi_mt_data(dev, fingers, x1, y1, x2, y2); 904 905 input_mt_report_finger_count(dev, fingers); 906 907 input_report_key(dev, BTN_LEFT, left); 908 input_report_key(dev, BTN_RIGHT, right); 909 910 if (z > 0) { 911 input_report_abs(dev, ABS_X, x); 912 input_report_abs(dev, ABS_Y, y); 913 } 914 input_report_abs(dev, ABS_PRESSURE, z); 915 916 input_sync(dev); 917 } 918 919 static void alps_report_bare_ps2_packet(struct psmouse *psmouse, 920 unsigned char packet[], 921 bool report_buttons) 922 { 923 struct alps_data *priv = psmouse->private; 924 struct input_dev *dev2 = priv->dev2; 925 926 if (report_buttons) 927 alps_report_buttons(psmouse, dev2, psmouse->dev, 928 packet[0] & 1, packet[0] & 2, packet[0] & 4); 929 930 input_report_rel(dev2, REL_X, 931 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0); 932 input_report_rel(dev2, REL_Y, 933 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0); 934 935 input_sync(dev2); 936 } 937 938 static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse) 939 { 940 struct alps_data *priv = psmouse->private; 941 942 if (psmouse->pktcnt < 6) 943 return PSMOUSE_GOOD_DATA; 944 945 if (psmouse->pktcnt == 6) { 946 /* 947 * Start a timer to flush the packet if it ends up last 948 * 6-byte packet in the stream. Timer needs to fire 949 * psmouse core times out itself. 20 ms should be enough 950 * to decide if we are getting more data or not. 951 */ 952 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20)); 953 return PSMOUSE_GOOD_DATA; 954 } 955 956 del_timer(&priv->timer); 957 958 if (psmouse->packet[6] & 0x80) { 959 960 /* 961 * Highest bit is set - that means we either had 962 * complete ALPS packet and this is start of the 963 * next packet or we got garbage. 964 */ 965 966 if (((psmouse->packet[3] | 967 psmouse->packet[4] | 968 psmouse->packet[5]) & 0x80) || 969 (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) { 970 psmouse_dbg(psmouse, 971 "refusing packet %4ph (suspected interleaved ps/2)\n", 972 psmouse->packet + 3); 973 return PSMOUSE_BAD_DATA; 974 } 975 976 priv->process_packet(psmouse); 977 978 /* Continue with the next packet */ 979 psmouse->packet[0] = psmouse->packet[6]; 980 psmouse->pktcnt = 1; 981 982 } else { 983 984 /* 985 * High bit is 0 - that means that we indeed got a PS/2 986 * packet in the middle of ALPS packet. 987 * 988 * There is also possibility that we got 6-byte ALPS 989 * packet followed by 3-byte packet from trackpoint. We 990 * can not distinguish between these 2 scenarios but 991 * because the latter is unlikely to happen in course of 992 * normal operation (user would need to press all 993 * buttons on the pad and start moving trackpoint 994 * without touching the pad surface) we assume former. 995 * Even if we are wrong the wost thing that would happen 996 * the cursor would jump but we should not get protocol 997 * de-synchronization. 998 */ 999 1000 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3], 1001 false); 1002 1003 /* 1004 * Continue with the standard ALPS protocol handling, 1005 * but make sure we won't process it as an interleaved 1006 * packet again, which may happen if all buttons are 1007 * pressed. To avoid this let's reset the 4th bit which 1008 * is normally 1. 1009 */ 1010 psmouse->packet[3] = psmouse->packet[6] & 0xf7; 1011 psmouse->pktcnt = 4; 1012 } 1013 1014 return PSMOUSE_GOOD_DATA; 1015 } 1016 1017 static void alps_flush_packet(unsigned long data) 1018 { 1019 struct psmouse *psmouse = (struct psmouse *)data; 1020 struct alps_data *priv = psmouse->private; 1021 1022 serio_pause_rx(psmouse->ps2dev.serio); 1023 1024 if (psmouse->pktcnt == psmouse->pktsize) { 1025 1026 /* 1027 * We did not any more data in reasonable amount of time. 1028 * Validate the last 3 bytes and process as a standard 1029 * ALPS packet. 1030 */ 1031 if ((psmouse->packet[3] | 1032 psmouse->packet[4] | 1033 psmouse->packet[5]) & 0x80) { 1034 psmouse_dbg(psmouse, 1035 "refusing packet %3ph (suspected interleaved ps/2)\n", 1036 psmouse->packet + 3); 1037 } else { 1038 priv->process_packet(psmouse); 1039 } 1040 psmouse->pktcnt = 0; 1041 } 1042 1043 serio_continue_rx(psmouse->ps2dev.serio); 1044 } 1045 1046 static psmouse_ret_t alps_process_byte(struct psmouse *psmouse) 1047 { 1048 struct alps_data *priv = psmouse->private; 1049 1050 if ((psmouse->packet[0] & 0xc8) == 0x08) { /* PS/2 packet */ 1051 if (psmouse->pktcnt == 3) { 1052 alps_report_bare_ps2_packet(psmouse, psmouse->packet, 1053 true); 1054 return PSMOUSE_FULL_PACKET; 1055 } 1056 return PSMOUSE_GOOD_DATA; 1057 } 1058 1059 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */ 1060 1061 if ((priv->flags & ALPS_PS2_INTERLEAVED) && 1062 psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) { 1063 return alps_handle_interleaved_ps2(psmouse); 1064 } 1065 1066 if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) { 1067 psmouse_dbg(psmouse, 1068 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n", 1069 psmouse->packet[0], priv->mask0, priv->byte0); 1070 return PSMOUSE_BAD_DATA; 1071 } 1072 1073 /* Bytes 2 - pktsize should have 0 in the highest bit */ 1074 if ((priv->proto_version < ALPS_PROTO_V5) && 1075 psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize && 1076 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) { 1077 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1078 psmouse->pktcnt - 1, 1079 psmouse->packet[psmouse->pktcnt - 1]); 1080 return PSMOUSE_BAD_DATA; 1081 } 1082 1083 if (psmouse->pktcnt == psmouse->pktsize) { 1084 priv->process_packet(psmouse); 1085 return PSMOUSE_FULL_PACKET; 1086 } 1087 1088 return PSMOUSE_GOOD_DATA; 1089 } 1090 1091 static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble) 1092 { 1093 struct ps2dev *ps2dev = &psmouse->ps2dev; 1094 struct alps_data *priv = psmouse->private; 1095 int command; 1096 unsigned char *param; 1097 unsigned char dummy[4]; 1098 1099 BUG_ON(nibble > 0xf); 1100 1101 command = priv->nibble_commands[nibble].command; 1102 param = (command & 0x0f00) ? 1103 dummy : (unsigned char *)&priv->nibble_commands[nibble].data; 1104 1105 if (ps2_command(ps2dev, param, command)) 1106 return -1; 1107 1108 return 0; 1109 } 1110 1111 static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr) 1112 { 1113 struct ps2dev *ps2dev = &psmouse->ps2dev; 1114 struct alps_data *priv = psmouse->private; 1115 int i, nibble; 1116 1117 if (ps2_command(ps2dev, NULL, priv->addr_command)) 1118 return -1; 1119 1120 for (i = 12; i >= 0; i -= 4) { 1121 nibble = (addr >> i) & 0xf; 1122 if (alps_command_mode_send_nibble(psmouse, nibble)) 1123 return -1; 1124 } 1125 1126 return 0; 1127 } 1128 1129 static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1130 { 1131 struct ps2dev *ps2dev = &psmouse->ps2dev; 1132 unsigned char param[4]; 1133 1134 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1135 return -1; 1136 1137 /* 1138 * The address being read is returned in the first two bytes 1139 * of the result. Check that this address matches the expected 1140 * address. 1141 */ 1142 if (addr != ((param[0] << 8) | param[1])) 1143 return -1; 1144 1145 return param[2]; 1146 } 1147 1148 static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1149 { 1150 if (alps_command_mode_set_addr(psmouse, addr)) 1151 return -1; 1152 return __alps_command_mode_read_reg(psmouse, addr); 1153 } 1154 1155 static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value) 1156 { 1157 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf)) 1158 return -1; 1159 if (alps_command_mode_send_nibble(psmouse, value & 0xf)) 1160 return -1; 1161 return 0; 1162 } 1163 1164 static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr, 1165 u8 value) 1166 { 1167 if (alps_command_mode_set_addr(psmouse, addr)) 1168 return -1; 1169 return __alps_command_mode_write_reg(psmouse, value); 1170 } 1171 1172 static int alps_rpt_cmd(struct psmouse *psmouse, int init_command, 1173 int repeated_command, unsigned char *param) 1174 { 1175 struct ps2dev *ps2dev = &psmouse->ps2dev; 1176 1177 param[0] = 0; 1178 if (init_command && ps2_command(ps2dev, param, init_command)) 1179 return -EIO; 1180 1181 if (ps2_command(ps2dev, NULL, repeated_command) || 1182 ps2_command(ps2dev, NULL, repeated_command) || 1183 ps2_command(ps2dev, NULL, repeated_command)) 1184 return -EIO; 1185 1186 param[0] = param[1] = param[2] = 0xff; 1187 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1188 return -EIO; 1189 1190 psmouse_dbg(psmouse, "%2.2X report: %3ph\n", 1191 repeated_command, param); 1192 return 0; 1193 } 1194 1195 static int alps_enter_command_mode(struct psmouse *psmouse) 1196 { 1197 unsigned char param[4]; 1198 1199 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) { 1200 psmouse_err(psmouse, "failed to enter command mode\n"); 1201 return -1; 1202 } 1203 1204 if ((param[0] != 0x88 || (param[1] != 0x07 && param[1] != 0x08)) && 1205 param[0] != 0x73) { 1206 psmouse_dbg(psmouse, 1207 "unknown response while entering command mode\n"); 1208 return -1; 1209 } 1210 return 0; 1211 } 1212 1213 static inline int alps_exit_command_mode(struct psmouse *psmouse) 1214 { 1215 struct ps2dev *ps2dev = &psmouse->ps2dev; 1216 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) 1217 return -1; 1218 return 0; 1219 } 1220 1221 /* 1222 * For DualPoint devices select the device that should respond to 1223 * subsequent commands. It looks like glidepad is behind stickpointer, 1224 * I'd thought it would be other way around... 1225 */ 1226 static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable) 1227 { 1228 struct ps2dev *ps2dev = &psmouse->ps2dev; 1229 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11; 1230 1231 if (ps2_command(ps2dev, NULL, cmd) || 1232 ps2_command(ps2dev, NULL, cmd) || 1233 ps2_command(ps2dev, NULL, cmd) || 1234 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1235 return -1; 1236 1237 /* we may get 3 more bytes, just ignore them */ 1238 ps2_drain(ps2dev, 3, 100); 1239 1240 return 0; 1241 } 1242 1243 static int alps_absolute_mode_v1_v2(struct psmouse *psmouse) 1244 { 1245 struct ps2dev *ps2dev = &psmouse->ps2dev; 1246 1247 /* Try ALPS magic knock - 4 disable before enable */ 1248 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1249 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1250 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1251 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1252 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) 1253 return -1; 1254 1255 /* 1256 * Switch mouse to poll (remote) mode so motion data will not 1257 * get in our way 1258 */ 1259 return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL); 1260 } 1261 1262 static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word) 1263 { 1264 int i, nibble; 1265 1266 /* 1267 * b0-b11 are valid bits, send sequence is inverse. 1268 * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1 1269 */ 1270 for (i = 0; i <= 8; i += 4) { 1271 nibble = (word >> i) & 0xf; 1272 if (alps_command_mode_send_nibble(psmouse, nibble)) 1273 return -1; 1274 } 1275 1276 return 0; 1277 } 1278 1279 static int alps_monitor_mode_write_reg(struct psmouse *psmouse, 1280 u16 addr, u16 value) 1281 { 1282 struct ps2dev *ps2dev = &psmouse->ps2dev; 1283 1284 /* 0x0A0 is the command to write the word */ 1285 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) || 1286 alps_monitor_mode_send_word(psmouse, 0x0A0) || 1287 alps_monitor_mode_send_word(psmouse, addr) || 1288 alps_monitor_mode_send_word(psmouse, value) || 1289 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1290 return -1; 1291 1292 return 0; 1293 } 1294 1295 static int alps_monitor_mode(struct psmouse *psmouse, bool enable) 1296 { 1297 struct ps2dev *ps2dev = &psmouse->ps2dev; 1298 1299 if (enable) { 1300 /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */ 1301 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 1302 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) || 1303 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1304 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1305 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1306 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1307 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1308 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO)) 1309 return -1; 1310 } else { 1311 /* EC to exit monitor mode */ 1312 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP)) 1313 return -1; 1314 } 1315 1316 return 0; 1317 } 1318 1319 static int alps_absolute_mode_v6(struct psmouse *psmouse) 1320 { 1321 u16 reg_val = 0x181; 1322 int ret = -1; 1323 1324 /* enter monitor mode, to write the register */ 1325 if (alps_monitor_mode(psmouse, true)) 1326 return -1; 1327 1328 ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val); 1329 1330 if (alps_monitor_mode(psmouse, false)) 1331 ret = -1; 1332 1333 return ret; 1334 } 1335 1336 static int alps_get_status(struct psmouse *psmouse, char *param) 1337 { 1338 /* Get status: 0xF5 0xF5 0xF5 0xE9 */ 1339 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param)) 1340 return -1; 1341 1342 return 0; 1343 } 1344 1345 /* 1346 * Turn touchpad tapping on or off. The sequences are: 1347 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable, 1348 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable. 1349 * My guess that 0xE9 (GetInfo) is here as a sync point. 1350 * For models that also have stickpointer (DualPoints) its tapping 1351 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but 1352 * we don't fiddle with it. 1353 */ 1354 static int alps_tap_mode(struct psmouse *psmouse, int enable) 1355 { 1356 struct ps2dev *ps2dev = &psmouse->ps2dev; 1357 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES; 1358 unsigned char tap_arg = enable ? 0x0A : 0x00; 1359 unsigned char param[4]; 1360 1361 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) || 1362 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1363 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1364 ps2_command(ps2dev, &tap_arg, cmd)) 1365 return -1; 1366 1367 if (alps_get_status(psmouse, param)) 1368 return -1; 1369 1370 return 0; 1371 } 1372 1373 /* 1374 * alps_poll() - poll the touchpad for current motion packet. 1375 * Used in resync. 1376 */ 1377 static int alps_poll(struct psmouse *psmouse) 1378 { 1379 struct alps_data *priv = psmouse->private; 1380 unsigned char buf[sizeof(psmouse->packet)]; 1381 bool poll_failed; 1382 1383 if (priv->flags & ALPS_PASS) 1384 alps_passthrough_mode_v2(psmouse, true); 1385 1386 poll_failed = ps2_command(&psmouse->ps2dev, buf, 1387 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0; 1388 1389 if (priv->flags & ALPS_PASS) 1390 alps_passthrough_mode_v2(psmouse, false); 1391 1392 if (poll_failed || (buf[0] & priv->mask0) != priv->byte0) 1393 return -1; 1394 1395 if ((psmouse->badbyte & 0xc8) == 0x08) { 1396 /* 1397 * Poll the track stick ... 1398 */ 1399 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8))) 1400 return -1; 1401 } 1402 1403 memcpy(psmouse->packet, buf, sizeof(buf)); 1404 return 0; 1405 } 1406 1407 static int alps_hw_init_v1_v2(struct psmouse *psmouse) 1408 { 1409 struct alps_data *priv = psmouse->private; 1410 1411 if ((priv->flags & ALPS_PASS) && 1412 alps_passthrough_mode_v2(psmouse, true)) { 1413 return -1; 1414 } 1415 1416 if (alps_tap_mode(psmouse, true)) { 1417 psmouse_warn(psmouse, "Failed to enable hardware tapping\n"); 1418 return -1; 1419 } 1420 1421 if (alps_absolute_mode_v1_v2(psmouse)) { 1422 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 1423 return -1; 1424 } 1425 1426 if ((priv->flags & ALPS_PASS) && 1427 alps_passthrough_mode_v2(psmouse, false)) { 1428 return -1; 1429 } 1430 1431 /* ALPS needs stream mode, otherwise it won't report any data */ 1432 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) { 1433 psmouse_err(psmouse, "Failed to enable stream mode\n"); 1434 return -1; 1435 } 1436 1437 return 0; 1438 } 1439 1440 static int alps_hw_init_v6(struct psmouse *psmouse) 1441 { 1442 unsigned char param[2] = {0xC8, 0x14}; 1443 1444 /* Enter passthrough mode to let trackpoint enter 6byte raw mode */ 1445 if (alps_passthrough_mode_v2(psmouse, true)) 1446 return -1; 1447 1448 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1449 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1450 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1451 ps2_command(&psmouse->ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 1452 ps2_command(&psmouse->ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 1453 return -1; 1454 1455 if (alps_passthrough_mode_v2(psmouse, false)) 1456 return -1; 1457 1458 if (alps_absolute_mode_v6(psmouse)) { 1459 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 1460 return -1; 1461 } 1462 1463 return 0; 1464 } 1465 1466 /* 1467 * Enable or disable passthrough mode to the trackstick. 1468 */ 1469 static int alps_passthrough_mode_v3(struct psmouse *psmouse, 1470 int reg_base, bool enable) 1471 { 1472 int reg_val, ret = -1; 1473 1474 if (alps_enter_command_mode(psmouse)) 1475 return -1; 1476 1477 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008); 1478 if (reg_val == -1) 1479 goto error; 1480 1481 if (enable) 1482 reg_val |= 0x01; 1483 else 1484 reg_val &= ~0x01; 1485 1486 ret = __alps_command_mode_write_reg(psmouse, reg_val); 1487 1488 error: 1489 if (alps_exit_command_mode(psmouse)) 1490 ret = -1; 1491 return ret; 1492 } 1493 1494 /* Must be in command mode when calling this function */ 1495 static int alps_absolute_mode_v3(struct psmouse *psmouse) 1496 { 1497 int reg_val; 1498 1499 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 1500 if (reg_val == -1) 1501 return -1; 1502 1503 reg_val |= 0x06; 1504 if (__alps_command_mode_write_reg(psmouse, reg_val)) 1505 return -1; 1506 1507 return 0; 1508 } 1509 1510 static int alps_probe_trackstick_v3(struct psmouse *psmouse, int reg_base) 1511 { 1512 int ret = -EIO, reg_val; 1513 1514 if (alps_enter_command_mode(psmouse)) 1515 goto error; 1516 1517 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08); 1518 if (reg_val == -1) 1519 goto error; 1520 1521 /* bit 7: trackstick is present */ 1522 ret = reg_val & 0x80 ? 0 : -ENODEV; 1523 1524 error: 1525 alps_exit_command_mode(psmouse); 1526 return ret; 1527 } 1528 1529 static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base) 1530 { 1531 struct ps2dev *ps2dev = &psmouse->ps2dev; 1532 int ret = 0; 1533 unsigned char param[4]; 1534 1535 if (alps_passthrough_mode_v3(psmouse, reg_base, true)) 1536 return -EIO; 1537 1538 /* 1539 * E7 report for the trackstick 1540 * 1541 * There have been reports of failures to seem to trace back 1542 * to the above trackstick check failing. When these occur 1543 * this E7 report fails, so when that happens we continue 1544 * with the assumption that there isn't a trackstick after 1545 * all. 1546 */ 1547 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) { 1548 psmouse_warn(psmouse, "trackstick E7 report failed\n"); 1549 ret = -ENODEV; 1550 } else { 1551 psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param); 1552 1553 /* 1554 * Not sure what this does, but it is absolutely 1555 * essential. Without it, the touchpad does not 1556 * work at all and the trackstick just emits normal 1557 * PS/2 packets. 1558 */ 1559 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1560 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1561 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1562 alps_command_mode_send_nibble(psmouse, 0x9) || 1563 alps_command_mode_send_nibble(psmouse, 0x4)) { 1564 psmouse_err(psmouse, 1565 "Error sending magic E6 sequence\n"); 1566 ret = -EIO; 1567 goto error; 1568 } 1569 1570 /* 1571 * This ensures the trackstick packets are in the format 1572 * supported by this driver. If bit 1 isn't set the packet 1573 * format is different. 1574 */ 1575 if (alps_enter_command_mode(psmouse) || 1576 alps_command_mode_write_reg(psmouse, 1577 reg_base + 0x08, 0x82) || 1578 alps_exit_command_mode(psmouse)) 1579 ret = -EIO; 1580 } 1581 1582 error: 1583 if (alps_passthrough_mode_v3(psmouse, reg_base, false)) 1584 ret = -EIO; 1585 1586 return ret; 1587 } 1588 1589 static int alps_hw_init_v3(struct psmouse *psmouse) 1590 { 1591 struct ps2dev *ps2dev = &psmouse->ps2dev; 1592 int reg_val; 1593 unsigned char param[4]; 1594 1595 reg_val = alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE); 1596 if (reg_val == -EIO) 1597 goto error; 1598 1599 if (reg_val == 0 && 1600 alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO) 1601 goto error; 1602 1603 if (alps_enter_command_mode(psmouse) || 1604 alps_absolute_mode_v3(psmouse)) { 1605 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 1606 goto error; 1607 } 1608 1609 reg_val = alps_command_mode_read_reg(psmouse, 0x0006); 1610 if (reg_val == -1) 1611 goto error; 1612 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 1613 goto error; 1614 1615 reg_val = alps_command_mode_read_reg(psmouse, 0x0007); 1616 if (reg_val == -1) 1617 goto error; 1618 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 1619 goto error; 1620 1621 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1) 1622 goto error; 1623 if (__alps_command_mode_write_reg(psmouse, 0x04)) 1624 goto error; 1625 1626 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1) 1627 goto error; 1628 if (__alps_command_mode_write_reg(psmouse, 0x03)) 1629 goto error; 1630 1631 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1) 1632 goto error; 1633 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03)) 1634 goto error; 1635 1636 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1) 1637 goto error; 1638 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04)) 1639 goto error; 1640 1641 alps_exit_command_mode(psmouse); 1642 1643 /* Set rate and enable data reporting */ 1644 param[0] = 0x64; 1645 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 1646 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 1647 psmouse_err(psmouse, "Failed to enable data reporting\n"); 1648 return -1; 1649 } 1650 1651 return 0; 1652 1653 error: 1654 /* 1655 * Leaving the touchpad in command mode will essentially render 1656 * it unusable until the machine reboots, so exit it here just 1657 * to be safe 1658 */ 1659 alps_exit_command_mode(psmouse); 1660 return -1; 1661 } 1662 1663 static int alps_hw_init_rushmore_v3(struct psmouse *psmouse) 1664 { 1665 struct alps_data *priv = psmouse->private; 1666 struct ps2dev *ps2dev = &psmouse->ps2dev; 1667 int reg_val, ret = -1; 1668 1669 if (priv->flags & ALPS_DUALPOINT) { 1670 reg_val = alps_setup_trackstick_v3(psmouse, 1671 ALPS_REG_BASE_RUSHMORE); 1672 if (reg_val == -EIO) 1673 goto error; 1674 if (reg_val == -ENODEV) 1675 priv->flags &= ~ALPS_DUALPOINT; 1676 } 1677 1678 if (alps_enter_command_mode(psmouse) || 1679 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 || 1680 alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00)) 1681 goto error; 1682 1683 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6); 1684 if (reg_val == -1) 1685 goto error; 1686 if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd)) 1687 goto error; 1688 1689 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 1690 goto error; 1691 1692 /* enter absolute mode */ 1693 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 1694 if (reg_val == -1) 1695 goto error; 1696 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 1697 goto error; 1698 1699 alps_exit_command_mode(psmouse); 1700 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 1701 1702 error: 1703 alps_exit_command_mode(psmouse); 1704 return ret; 1705 } 1706 1707 /* Must be in command mode when calling this function */ 1708 static int alps_absolute_mode_v4(struct psmouse *psmouse) 1709 { 1710 int reg_val; 1711 1712 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 1713 if (reg_val == -1) 1714 return -1; 1715 1716 reg_val |= 0x02; 1717 if (__alps_command_mode_write_reg(psmouse, reg_val)) 1718 return -1; 1719 1720 return 0; 1721 } 1722 1723 static int alps_hw_init_v4(struct psmouse *psmouse) 1724 { 1725 struct ps2dev *ps2dev = &psmouse->ps2dev; 1726 unsigned char param[4]; 1727 1728 if (alps_enter_command_mode(psmouse)) 1729 goto error; 1730 1731 if (alps_absolute_mode_v4(psmouse)) { 1732 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 1733 goto error; 1734 } 1735 1736 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c)) 1737 goto error; 1738 1739 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03)) 1740 goto error; 1741 1742 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03)) 1743 goto error; 1744 1745 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15)) 1746 goto error; 1747 1748 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01)) 1749 goto error; 1750 1751 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03)) 1752 goto error; 1753 1754 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03)) 1755 goto error; 1756 1757 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03)) 1758 goto error; 1759 1760 alps_exit_command_mode(psmouse); 1761 1762 /* 1763 * This sequence changes the output from a 9-byte to an 1764 * 8-byte format. All the same data seems to be present, 1765 * just in a more compact format. 1766 */ 1767 param[0] = 0xc8; 1768 param[1] = 0x64; 1769 param[2] = 0x50; 1770 if (ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 1771 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE) || 1772 ps2_command(ps2dev, ¶m[2], PSMOUSE_CMD_SETRATE) || 1773 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) 1774 return -1; 1775 1776 /* Set rate and enable data reporting */ 1777 param[0] = 0x64; 1778 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 1779 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 1780 psmouse_err(psmouse, "Failed to enable data reporting\n"); 1781 return -1; 1782 } 1783 1784 return 0; 1785 1786 error: 1787 /* 1788 * Leaving the touchpad in command mode will essentially render 1789 * it unusable until the machine reboots, so exit it here just 1790 * to be safe 1791 */ 1792 alps_exit_command_mode(psmouse); 1793 return -1; 1794 } 1795 1796 static int alps_dolphin_get_device_area(struct psmouse *psmouse, 1797 struct alps_data *priv) 1798 { 1799 struct ps2dev *ps2dev = &psmouse->ps2dev; 1800 unsigned char param[4] = {0}; 1801 int num_x_electrode, num_y_electrode; 1802 1803 if (alps_enter_command_mode(psmouse)) 1804 return -1; 1805 1806 param[0] = 0x0a; 1807 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 1808 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 1809 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 1810 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 1811 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE)) 1812 return -1; 1813 1814 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1815 return -1; 1816 1817 /* 1818 * Dolphin's sensor line number is not fixed. It can be calculated 1819 * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET. 1820 * Further more, we can get device's x_max and y_max by multiplying 1821 * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE. 1822 * 1823 * e.g. When we get register's sensor_x = 11 & sensor_y = 8, 1824 * real sensor line number X = 11 + 8 = 19, and 1825 * real sensor line number Y = 8 + 1 = 9. 1826 * So, x_max = (19 - 1) * 64 = 1152, and 1827 * y_max = (9 - 1) * 64 = 512. 1828 */ 1829 num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F); 1830 num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F); 1831 priv->x_bits = num_x_electrode; 1832 priv->y_bits = num_y_electrode; 1833 priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 1834 priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 1835 1836 if (alps_exit_command_mode(psmouse)) 1837 return -1; 1838 1839 return 0; 1840 } 1841 1842 static int alps_hw_init_dolphin_v1(struct psmouse *psmouse) 1843 { 1844 struct ps2dev *ps2dev = &psmouse->ps2dev; 1845 unsigned char param[2]; 1846 1847 /* This is dolphin "v1" as empirically defined by florin9doi */ 1848 param[0] = 0x64; 1849 param[1] = 0x28; 1850 1851 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 1852 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 1853 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 1854 return -1; 1855 1856 return 0; 1857 } 1858 1859 static void alps_set_defaults(struct alps_data *priv) 1860 { 1861 priv->byte0 = 0x8f; 1862 priv->mask0 = 0x8f; 1863 priv->flags = ALPS_DUALPOINT; 1864 1865 priv->x_max = 2000; 1866 priv->y_max = 1400; 1867 priv->x_bits = 15; 1868 priv->y_bits = 11; 1869 1870 switch (priv->proto_version) { 1871 case ALPS_PROTO_V1: 1872 case ALPS_PROTO_V2: 1873 priv->hw_init = alps_hw_init_v1_v2; 1874 priv->process_packet = alps_process_packet_v1_v2; 1875 priv->set_abs_params = alps_set_abs_params_st; 1876 priv->x_max = 1023; 1877 priv->y_max = 767; 1878 break; 1879 case ALPS_PROTO_V3: 1880 priv->hw_init = alps_hw_init_v3; 1881 priv->process_packet = alps_process_packet_v3; 1882 priv->set_abs_params = alps_set_abs_params_mt; 1883 priv->decode_fields = alps_decode_pinnacle; 1884 priv->nibble_commands = alps_v3_nibble_commands; 1885 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 1886 break; 1887 case ALPS_PROTO_V4: 1888 priv->hw_init = alps_hw_init_v4; 1889 priv->process_packet = alps_process_packet_v4; 1890 priv->set_abs_params = alps_set_abs_params_mt; 1891 priv->nibble_commands = alps_v4_nibble_commands; 1892 priv->addr_command = PSMOUSE_CMD_DISABLE; 1893 break; 1894 case ALPS_PROTO_V5: 1895 priv->hw_init = alps_hw_init_dolphin_v1; 1896 priv->process_packet = alps_process_touchpad_packet_v3_v5; 1897 priv->decode_fields = alps_decode_dolphin; 1898 priv->set_abs_params = alps_set_abs_params_mt; 1899 priv->nibble_commands = alps_v3_nibble_commands; 1900 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 1901 priv->byte0 = 0xc8; 1902 priv->mask0 = 0xd8; 1903 priv->flags = 0; 1904 priv->x_max = 1360; 1905 priv->y_max = 660; 1906 priv->x_bits = 23; 1907 priv->y_bits = 12; 1908 break; 1909 case ALPS_PROTO_V6: 1910 priv->hw_init = alps_hw_init_v6; 1911 priv->process_packet = alps_process_packet_v6; 1912 priv->set_abs_params = alps_set_abs_params_st; 1913 priv->nibble_commands = alps_v6_nibble_commands; 1914 priv->x_max = 2047; 1915 priv->y_max = 1535; 1916 break; 1917 } 1918 } 1919 1920 static int alps_match_table(struct psmouse *psmouse, struct alps_data *priv, 1921 unsigned char *e7, unsigned char *ec) 1922 { 1923 const struct alps_model_info *model; 1924 int i; 1925 1926 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) { 1927 model = &alps_model_data[i]; 1928 1929 if (!memcmp(e7, model->signature, sizeof(model->signature)) && 1930 (!model->command_mode_resp || 1931 model->command_mode_resp == ec[2])) { 1932 1933 priv->proto_version = model->proto_version; 1934 alps_set_defaults(priv); 1935 1936 priv->flags = model->flags; 1937 priv->byte0 = model->byte0; 1938 priv->mask0 = model->mask0; 1939 1940 return 0; 1941 } 1942 } 1943 1944 return -EINVAL; 1945 } 1946 1947 static int alps_identify(struct psmouse *psmouse, struct alps_data *priv) 1948 { 1949 unsigned char e6[4], e7[4], ec[4]; 1950 1951 /* 1952 * First try "E6 report". 1953 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed. 1954 * The bits 0-2 of the first byte will be 1s if some buttons are 1955 * pressed. 1956 */ 1957 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 1958 PSMOUSE_CMD_SETSCALE11, e6)) 1959 return -EIO; 1960 1961 if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100)) 1962 return -EINVAL; 1963 1964 /* 1965 * Now get the "E7" and "EC" reports. These will uniquely identify 1966 * most ALPS touchpads. 1967 */ 1968 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 1969 PSMOUSE_CMD_SETSCALE21, e7) || 1970 alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 1971 PSMOUSE_CMD_RESET_WRAP, ec) || 1972 alps_exit_command_mode(psmouse)) 1973 return -EIO; 1974 1975 if (alps_match_table(psmouse, priv, e7, ec) == 0) { 1976 return 0; 1977 } else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 && 1978 ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) { 1979 priv->proto_version = ALPS_PROTO_V5; 1980 alps_set_defaults(priv); 1981 if (alps_dolphin_get_device_area(psmouse, priv)) 1982 return -EIO; 1983 else 1984 return 0; 1985 } else if (ec[0] == 0x88 && ec[1] == 0x08) { 1986 priv->proto_version = ALPS_PROTO_V3; 1987 alps_set_defaults(priv); 1988 1989 priv->hw_init = alps_hw_init_rushmore_v3; 1990 priv->decode_fields = alps_decode_rushmore; 1991 priv->x_bits = 16; 1992 priv->y_bits = 12; 1993 1994 /* hack to make addr_command, nibble_command available */ 1995 psmouse->private = priv; 1996 1997 if (alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_RUSHMORE)) 1998 priv->flags &= ~ALPS_DUALPOINT; 1999 2000 return 0; 2001 } else if (ec[0] == 0x88 && ec[1] == 0x07 && 2002 ec[2] >= 0x90 && ec[2] <= 0x9d) { 2003 priv->proto_version = ALPS_PROTO_V3; 2004 alps_set_defaults(priv); 2005 2006 return 0; 2007 } 2008 2009 psmouse_info(psmouse, 2010 "Unknown ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec); 2011 2012 return -EINVAL; 2013 } 2014 2015 static int alps_reconnect(struct psmouse *psmouse) 2016 { 2017 struct alps_data *priv = psmouse->private; 2018 2019 psmouse_reset(psmouse); 2020 2021 if (alps_identify(psmouse, priv) < 0) 2022 return -1; 2023 2024 return priv->hw_init(psmouse); 2025 } 2026 2027 static void alps_disconnect(struct psmouse *psmouse) 2028 { 2029 struct alps_data *priv = psmouse->private; 2030 2031 psmouse_reset(psmouse); 2032 del_timer_sync(&priv->timer); 2033 input_unregister_device(priv->dev2); 2034 kfree(priv); 2035 } 2036 2037 static void alps_set_abs_params_st(struct alps_data *priv, 2038 struct input_dev *dev1) 2039 { 2040 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0); 2041 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0); 2042 } 2043 2044 static void alps_set_abs_params_mt(struct alps_data *priv, 2045 struct input_dev *dev1) 2046 { 2047 set_bit(INPUT_PROP_SEMI_MT, dev1->propbit); 2048 input_mt_init_slots(dev1, 2, 0); 2049 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0); 2050 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0); 2051 2052 set_bit(BTN_TOOL_DOUBLETAP, dev1->keybit); 2053 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit); 2054 set_bit(BTN_TOOL_QUADTAP, dev1->keybit); 2055 2056 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0); 2057 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0); 2058 } 2059 2060 int alps_init(struct psmouse *psmouse) 2061 { 2062 struct alps_data *priv; 2063 struct input_dev *dev1 = psmouse->dev, *dev2; 2064 2065 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL); 2066 dev2 = input_allocate_device(); 2067 if (!priv || !dev2) 2068 goto init_fail; 2069 2070 priv->dev2 = dev2; 2071 setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse); 2072 2073 psmouse->private = priv; 2074 2075 psmouse_reset(psmouse); 2076 2077 if (alps_identify(psmouse, priv) < 0) 2078 goto init_fail; 2079 2080 if (priv->hw_init(psmouse)) 2081 goto init_fail; 2082 2083 /* 2084 * Undo part of setup done for us by psmouse core since touchpad 2085 * is not a relative device. 2086 */ 2087 __clear_bit(EV_REL, dev1->evbit); 2088 __clear_bit(REL_X, dev1->relbit); 2089 __clear_bit(REL_Y, dev1->relbit); 2090 2091 /* 2092 * Now set up our capabilities. 2093 */ 2094 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY); 2095 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH); 2096 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER); 2097 dev1->keybit[BIT_WORD(BTN_LEFT)] |= 2098 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); 2099 2100 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS); 2101 2102 priv->set_abs_params(priv, dev1); 2103 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2104 2105 if (priv->flags & ALPS_WHEEL) { 2106 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL); 2107 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL); 2108 } 2109 2110 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 2111 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD); 2112 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK); 2113 } 2114 2115 if (priv->flags & ALPS_FOUR_BUTTONS) { 2116 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0); 2117 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1); 2118 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2); 2119 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3); 2120 } else { 2121 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE); 2122 } 2123 2124 snprintf(priv->phys, sizeof(priv->phys), "%s/input1", psmouse->ps2dev.serio->phys); 2125 dev2->phys = priv->phys; 2126 dev2->name = (priv->flags & ALPS_DUALPOINT) ? 2127 "DualPoint Stick" : "ALPS PS/2 Device"; 2128 dev2->id.bustype = BUS_I8042; 2129 dev2->id.vendor = 0x0002; 2130 dev2->id.product = PSMOUSE_ALPS; 2131 dev2->id.version = 0x0000; 2132 dev2->dev.parent = &psmouse->ps2dev.serio->dev; 2133 2134 dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); 2135 dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); 2136 dev2->keybit[BIT_WORD(BTN_LEFT)] = 2137 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); 2138 2139 if (input_register_device(priv->dev2)) 2140 goto init_fail; 2141 2142 psmouse->protocol_handler = alps_process_byte; 2143 psmouse->poll = alps_poll; 2144 psmouse->disconnect = alps_disconnect; 2145 psmouse->reconnect = alps_reconnect; 2146 psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6; 2147 2148 /* We are having trouble resyncing ALPS touchpads so disable it for now */ 2149 psmouse->resync_time = 0; 2150 2151 return 0; 2152 2153 init_fail: 2154 psmouse_reset(psmouse); 2155 input_free_device(dev2); 2156 kfree(priv); 2157 psmouse->private = NULL; 2158 return -1; 2159 } 2160 2161 int alps_detect(struct psmouse *psmouse, bool set_properties) 2162 { 2163 struct alps_data dummy; 2164 2165 if (alps_identify(psmouse, &dummy) < 0) 2166 return -1; 2167 2168 if (set_properties) { 2169 psmouse->vendor = "ALPS"; 2170 psmouse->name = dummy.flags & ALPS_DUALPOINT ? 2171 "DualPoint TouchPad" : "GlidePoint"; 2172 psmouse->model = dummy.proto_version << 8; 2173 } 2174 return 0; 2175 } 2176 2177