1 /* 2 * ALPS touchpad PS/2 mouse driver 3 * 4 * Copyright (c) 2003 Neil Brown <neilb@cse.unsw.edu.au> 5 * Copyright (c) 2003-2005 Peter Osterlund <petero2@telia.com> 6 * Copyright (c) 2004 Dmitry Torokhov <dtor@mail.ru> 7 * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz> 8 * Copyright (c) 2009 Sebastian Kapfer <sebastian_kapfer@gmx.net> 9 * 10 * ALPS detection, tap switching and status querying info is taken from 11 * tpconfig utility (by C. Scott Ananian and Bruce Kall). 12 * 13 * This program is free software; you can redistribute it and/or modify it 14 * under the terms of the GNU General Public License version 2 as published by 15 * the Free Software Foundation. 16 */ 17 18 #include <linux/slab.h> 19 #include <linux/input.h> 20 #include <linux/input/mt.h> 21 #include <linux/serio.h> 22 #include <linux/libps2.h> 23 24 #include "psmouse.h" 25 #include "alps.h" 26 27 /* 28 * Definitions for ALPS version 3 and 4 command mode protocol 29 */ 30 #define ALPS_CMD_NIBBLE_10 0x01f2 31 32 #define ALPS_REG_BASE_RUSHMORE 0xc2c0 33 #define ALPS_REG_BASE_PINNACLE 0x0000 34 35 static const struct alps_nibble_commands alps_v3_nibble_commands[] = { 36 { PSMOUSE_CMD_SETPOLL, 0x00 }, /* 0 */ 37 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */ 38 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */ 39 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */ 40 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */ 41 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */ 42 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */ 43 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */ 44 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */ 45 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */ 46 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */ 47 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */ 48 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */ 49 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */ 50 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */ 51 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 52 }; 53 54 static const struct alps_nibble_commands alps_v4_nibble_commands[] = { 55 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */ 56 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */ 57 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */ 58 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */ 59 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */ 60 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */ 61 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */ 62 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */ 63 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */ 64 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */ 65 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */ 66 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */ 67 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */ 68 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */ 69 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */ 70 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 71 }; 72 73 static const struct alps_nibble_commands alps_v6_nibble_commands[] = { 74 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */ 75 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 1 */ 76 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 2 */ 77 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 3 */ 78 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 4 */ 79 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 5 */ 80 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 6 */ 81 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 7 */ 82 { PSMOUSE_CMD_GETID, 0x00 }, /* 8 */ 83 { PSMOUSE_CMD_GETINFO, 0x00 }, /* 9 */ 84 { PSMOUSE_CMD_SETRES, 0x00 }, /* a */ 85 { PSMOUSE_CMD_SETRES, 0x01 }, /* b */ 86 { PSMOUSE_CMD_SETRES, 0x02 }, /* c */ 87 { PSMOUSE_CMD_SETRES, 0x03 }, /* d */ 88 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* e */ 89 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 90 }; 91 92 93 #define ALPS_DUALPOINT 0x02 /* touchpad has trackstick */ 94 #define ALPS_PASS 0x04 /* device has a pass-through port */ 95 96 #define ALPS_WHEEL 0x08 /* hardware wheel present */ 97 #define ALPS_FW_BK_1 0x10 /* front & back buttons present */ 98 #define ALPS_FW_BK_2 0x20 /* front & back buttons present */ 99 #define ALPS_FOUR_BUTTONS 0x40 /* 4 direction button present */ 100 #define ALPS_PS2_INTERLEAVED 0x80 /* 3-byte PS/2 packet interleaved with 101 6-byte ALPS packet */ 102 #define ALPS_BUTTONPAD 0x200 /* device is a clickpad */ 103 104 static const struct alps_model_info alps_model_data[] = { 105 { { 0x32, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Toshiba Salellite Pro M10 */ 106 { { 0x33, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V1, 0x88, 0xf8, 0 } }, /* UMAX-530T */ 107 { { 0x53, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 108 { { 0x53, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 109 { { 0x60, 0x03, 0xc8 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, /* HP ze1115 */ 110 { { 0x63, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 111 { { 0x63, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 112 { { 0x63, 0x02, 0x28 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Fujitsu Siemens S6010 */ 113 { { 0x63, 0x02, 0x3c }, 0x00, { ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL } }, /* Toshiba Satellite S2400-103 */ 114 { { 0x63, 0x02, 0x50 }, 0x00, { ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 } }, /* NEC Versa L320 */ 115 { { 0x63, 0x02, 0x64 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 116 { { 0x63, 0x03, 0xc8 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D800 */ 117 { { 0x73, 0x00, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT } }, /* ThinkPad R61 8918-5QG */ 118 { { 0x73, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 119 { { 0x73, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Ahtec Laptop */ 120 121 /* 122 * XXX This entry is suspicious. First byte has zero lower nibble, 123 * which is what a normal mouse would report. Also, the value 0x0e 124 * isn't valid per PS/2 spec. 125 */ 126 { { 0x20, 0x02, 0x0e }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, 127 128 { { 0x22, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, 129 { { 0x22, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D600 */ 130 /* Dell Latitude E5500, E6400, E6500, Precision M4400 */ 131 { { 0x62, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xcf, 0xcf, 132 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, 133 { { 0x73, 0x00, 0x14 }, 0x00, { ALPS_PROTO_V6, 0xff, 0xff, ALPS_DUALPOINT } }, /* Dell XT2 */ 134 { { 0x73, 0x02, 0x50 }, 0x00, { ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS } }, /* Dell Vostro 1400 */ 135 { { 0x52, 0x01, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff, 136 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, /* Toshiba Tecra A11-11L */ 137 { { 0x73, 0x02, 0x64 }, 0x8a, { ALPS_PROTO_V4, 0x8f, 0x8f, 0 } }, 138 }; 139 140 static const struct alps_protocol_info alps_v3_protocol_data = { 141 ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT 142 }; 143 144 static const struct alps_protocol_info alps_v3_rushmore_data = { 145 ALPS_PROTO_V3_RUSHMORE, 0x8f, 0x8f, ALPS_DUALPOINT 146 }; 147 148 static const struct alps_protocol_info alps_v5_protocol_data = { 149 ALPS_PROTO_V5, 0xc8, 0xd8, 0 150 }; 151 152 static const struct alps_protocol_info alps_v7_protocol_data = { 153 ALPS_PROTO_V7, 0x48, 0x48, ALPS_DUALPOINT 154 }; 155 156 static void alps_set_abs_params_st(struct alps_data *priv, 157 struct input_dev *dev1); 158 static void alps_set_abs_params_mt(struct alps_data *priv, 159 struct input_dev *dev1); 160 161 /* Packet formats are described in Documentation/input/alps.txt */ 162 163 static bool alps_is_valid_first_byte(struct alps_data *priv, 164 unsigned char data) 165 { 166 return (data & priv->mask0) == priv->byte0; 167 } 168 169 static void alps_report_buttons(struct input_dev *dev1, struct input_dev *dev2, 170 int left, int right, int middle) 171 { 172 struct input_dev *dev; 173 174 /* 175 * If shared button has already been reported on the 176 * other device (dev2) then this event should be also 177 * sent through that device. 178 */ 179 dev = (dev2 && test_bit(BTN_LEFT, dev2->key)) ? dev2 : dev1; 180 input_report_key(dev, BTN_LEFT, left); 181 182 dev = (dev2 && test_bit(BTN_RIGHT, dev2->key)) ? dev2 : dev1; 183 input_report_key(dev, BTN_RIGHT, right); 184 185 dev = (dev2 && test_bit(BTN_MIDDLE, dev2->key)) ? dev2 : dev1; 186 input_report_key(dev, BTN_MIDDLE, middle); 187 188 /* 189 * Sync the _other_ device now, we'll do the first 190 * device later once we report the rest of the events. 191 */ 192 if (dev2) 193 input_sync(dev2); 194 } 195 196 static void alps_process_packet_v1_v2(struct psmouse *psmouse) 197 { 198 struct alps_data *priv = psmouse->private; 199 unsigned char *packet = psmouse->packet; 200 struct input_dev *dev = psmouse->dev; 201 struct input_dev *dev2 = priv->dev2; 202 int x, y, z, ges, fin, left, right, middle; 203 int back = 0, forward = 0; 204 205 if (priv->proto_version == ALPS_PROTO_V1) { 206 left = packet[2] & 0x10; 207 right = packet[2] & 0x08; 208 middle = 0; 209 x = packet[1] | ((packet[0] & 0x07) << 7); 210 y = packet[4] | ((packet[3] & 0x07) << 7); 211 z = packet[5]; 212 } else { 213 left = packet[3] & 1; 214 right = packet[3] & 2; 215 middle = packet[3] & 4; 216 x = packet[1] | ((packet[2] & 0x78) << (7 - 3)); 217 y = packet[4] | ((packet[3] & 0x70) << (7 - 4)); 218 z = packet[5]; 219 } 220 221 if (priv->flags & ALPS_FW_BK_1) { 222 back = packet[0] & 0x10; 223 forward = packet[2] & 4; 224 } 225 226 if (priv->flags & ALPS_FW_BK_2) { 227 back = packet[3] & 4; 228 forward = packet[2] & 4; 229 if ((middle = forward && back)) 230 forward = back = 0; 231 } 232 233 ges = packet[2] & 1; 234 fin = packet[2] & 2; 235 236 if ((priv->flags & ALPS_DUALPOINT) && z == 127) { 237 input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x)); 238 input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y)); 239 240 alps_report_buttons(dev2, dev, left, right, middle); 241 242 input_sync(dev2); 243 return; 244 } 245 246 alps_report_buttons(dev, dev2, left, right, middle); 247 248 /* Convert hardware tap to a reasonable Z value */ 249 if (ges && !fin) 250 z = 40; 251 252 /* 253 * A "tap and drag" operation is reported by the hardware as a transition 254 * from (!fin && ges) to (fin && ges). This should be translated to the 255 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually. 256 */ 257 if (ges && fin && !priv->prev_fin) { 258 input_report_abs(dev, ABS_X, x); 259 input_report_abs(dev, ABS_Y, y); 260 input_report_abs(dev, ABS_PRESSURE, 0); 261 input_report_key(dev, BTN_TOOL_FINGER, 0); 262 input_sync(dev); 263 } 264 priv->prev_fin = fin; 265 266 if (z > 30) 267 input_report_key(dev, BTN_TOUCH, 1); 268 if (z < 25) 269 input_report_key(dev, BTN_TOUCH, 0); 270 271 if (z > 0) { 272 input_report_abs(dev, ABS_X, x); 273 input_report_abs(dev, ABS_Y, y); 274 } 275 276 input_report_abs(dev, ABS_PRESSURE, z); 277 input_report_key(dev, BTN_TOOL_FINGER, z > 0); 278 279 if (priv->flags & ALPS_WHEEL) 280 input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07)); 281 282 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 283 input_report_key(dev, BTN_FORWARD, forward); 284 input_report_key(dev, BTN_BACK, back); 285 } 286 287 if (priv->flags & ALPS_FOUR_BUTTONS) { 288 input_report_key(dev, BTN_0, packet[2] & 4); 289 input_report_key(dev, BTN_1, packet[0] & 0x10); 290 input_report_key(dev, BTN_2, packet[3] & 4); 291 input_report_key(dev, BTN_3, packet[0] & 0x20); 292 } 293 294 input_sync(dev); 295 } 296 297 /* 298 * Process bitmap data for V5 protocols. Return value is null. 299 * 300 * The bitmaps don't have enough data to track fingers, so this function 301 * only generates points representing a bounding box of at most two contacts. 302 * These two points are returned in fields->mt. 303 */ 304 static void alps_process_bitmap_dolphin(struct alps_data *priv, 305 struct alps_fields *fields) 306 { 307 int box_middle_x, box_middle_y; 308 unsigned int x_map, y_map; 309 unsigned char start_bit, end_bit; 310 unsigned char x_msb, x_lsb, y_msb, y_lsb; 311 312 x_map = fields->x_map; 313 y_map = fields->y_map; 314 315 if (!x_map || !y_map) 316 return; 317 318 /* Get Most-significant and Least-significant bit */ 319 x_msb = fls(x_map); 320 x_lsb = ffs(x_map); 321 y_msb = fls(y_map); 322 y_lsb = ffs(y_map); 323 324 /* Most-significant bit should never exceed max sensor line number */ 325 if (x_msb > priv->x_bits || y_msb > priv->y_bits) 326 return; 327 328 if (fields->fingers > 1) { 329 start_bit = priv->x_bits - x_msb; 330 end_bit = priv->x_bits - x_lsb; 331 box_middle_x = (priv->x_max * (start_bit + end_bit)) / 332 (2 * (priv->x_bits - 1)); 333 334 start_bit = y_lsb - 1; 335 end_bit = y_msb - 1; 336 box_middle_y = (priv->y_max * (start_bit + end_bit)) / 337 (2 * (priv->y_bits - 1)); 338 fields->mt[0] = fields->st; 339 fields->mt[1].x = 2 * box_middle_x - fields->mt[0].x; 340 fields->mt[1].y = 2 * box_middle_y - fields->mt[0].y; 341 } 342 } 343 344 static void alps_get_bitmap_points(unsigned int map, 345 struct alps_bitmap_point *low, 346 struct alps_bitmap_point *high, 347 int *fingers) 348 { 349 struct alps_bitmap_point *point; 350 int i, bit, prev_bit = 0; 351 352 point = low; 353 for (i = 0; map != 0; i++, map >>= 1) { 354 bit = map & 1; 355 if (bit) { 356 if (!prev_bit) { 357 point->start_bit = i; 358 point->num_bits = 0; 359 (*fingers)++; 360 } 361 point->num_bits++; 362 } else { 363 if (prev_bit) 364 point = high; 365 } 366 prev_bit = bit; 367 } 368 } 369 370 /* 371 * Process bitmap data from v3 and v4 protocols. Returns the number of 372 * fingers detected. A return value of 0 means at least one of the 373 * bitmaps was empty. 374 * 375 * The bitmaps don't have enough data to track fingers, so this function 376 * only generates points representing a bounding box of all contacts. 377 * These points are returned in fields->mt when the return value 378 * is greater than 0. 379 */ 380 static int alps_process_bitmap(struct alps_data *priv, 381 struct alps_fields *fields) 382 { 383 int i, fingers_x = 0, fingers_y = 0, fingers; 384 struct alps_bitmap_point x_low = {0,}, x_high = {0,}; 385 struct alps_bitmap_point y_low = {0,}, y_high = {0,}; 386 387 if (!fields->x_map || !fields->y_map) 388 return 0; 389 390 alps_get_bitmap_points(fields->x_map, &x_low, &x_high, &fingers_x); 391 alps_get_bitmap_points(fields->y_map, &y_low, &y_high, &fingers_y); 392 393 /* 394 * Fingers can overlap, so we use the maximum count of fingers 395 * on either axis as the finger count. 396 */ 397 fingers = max(fingers_x, fingers_y); 398 399 /* 400 * If an axis reports only a single contact, we have overlapping or 401 * adjacent fingers. Divide the single contact between the two points. 402 */ 403 if (fingers_x == 1) { 404 i = (x_low.num_bits - 1) / 2; 405 x_low.num_bits = x_low.num_bits - i; 406 x_high.start_bit = x_low.start_bit + i; 407 x_high.num_bits = max(i, 1); 408 } 409 if (fingers_y == 1) { 410 i = (y_low.num_bits - 1) / 2; 411 y_low.num_bits = y_low.num_bits - i; 412 y_high.start_bit = y_low.start_bit + i; 413 y_high.num_bits = max(i, 1); 414 } 415 416 fields->mt[0].x = 417 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) / 418 (2 * (priv->x_bits - 1)); 419 fields->mt[0].y = 420 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) / 421 (2 * (priv->y_bits - 1)); 422 423 fields->mt[1].x = 424 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) / 425 (2 * (priv->x_bits - 1)); 426 fields->mt[1].y = 427 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) / 428 (2 * (priv->y_bits - 1)); 429 430 /* y-bitmap order is reversed, except on rushmore */ 431 if (priv->proto_version != ALPS_PROTO_V3_RUSHMORE) { 432 fields->mt[0].y = priv->y_max - fields->mt[0].y; 433 fields->mt[1].y = priv->y_max - fields->mt[1].y; 434 } 435 436 return fingers; 437 } 438 439 static void alps_set_slot(struct input_dev *dev, int slot, int x, int y) 440 { 441 input_mt_slot(dev, slot); 442 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); 443 input_report_abs(dev, ABS_MT_POSITION_X, x); 444 input_report_abs(dev, ABS_MT_POSITION_Y, y); 445 } 446 447 static void alps_report_mt_data(struct psmouse *psmouse, int n) 448 { 449 struct alps_data *priv = psmouse->private; 450 struct input_dev *dev = psmouse->dev; 451 struct alps_fields *f = &priv->f; 452 int i, slot[MAX_TOUCHES]; 453 454 input_mt_assign_slots(dev, slot, f->mt, n, 0); 455 for (i = 0; i < n; i++) 456 alps_set_slot(dev, slot[i], f->mt[i].x, f->mt[i].y); 457 458 input_mt_sync_frame(dev); 459 } 460 461 static void alps_report_semi_mt_data(struct psmouse *psmouse, int fingers) 462 { 463 struct alps_data *priv = psmouse->private; 464 struct input_dev *dev = psmouse->dev; 465 struct alps_fields *f = &priv->f; 466 467 /* Use st data when we don't have mt data */ 468 if (fingers < 2) { 469 f->mt[0].x = f->st.x; 470 f->mt[0].y = f->st.y; 471 fingers = f->pressure > 0 ? 1 : 0; 472 } 473 474 alps_report_mt_data(psmouse, (fingers <= 2) ? fingers : 2); 475 476 input_mt_report_finger_count(dev, fingers); 477 478 input_report_key(dev, BTN_LEFT, f->left); 479 input_report_key(dev, BTN_RIGHT, f->right); 480 input_report_key(dev, BTN_MIDDLE, f->middle); 481 482 input_report_abs(dev, ABS_PRESSURE, f->pressure); 483 484 input_sync(dev); 485 } 486 487 static void alps_process_trackstick_packet_v3(struct psmouse *psmouse) 488 { 489 struct alps_data *priv = psmouse->private; 490 unsigned char *packet = psmouse->packet; 491 struct input_dev *dev = priv->dev2; 492 int x, y, z, left, right, middle; 493 494 /* It should be a DualPoint when received trackstick packet */ 495 if (!(priv->flags & ALPS_DUALPOINT)) { 496 psmouse_warn(psmouse, 497 "Rejected trackstick packet from non DualPoint device"); 498 return; 499 } 500 501 /* Sanity check packet */ 502 if (!(packet[0] & 0x40)) { 503 psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n"); 504 return; 505 } 506 507 /* 508 * There's a special packet that seems to indicate the end 509 * of a stream of trackstick data. Filter these out. 510 */ 511 if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f) 512 return; 513 514 x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f)); 515 y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f)); 516 z = (packet[4] & 0x7c) >> 2; 517 518 /* 519 * The x and y values tend to be quite large, and when used 520 * alone the trackstick is difficult to use. Scale them down 521 * to compensate. 522 */ 523 x /= 8; 524 y /= 8; 525 526 input_report_rel(dev, REL_X, x); 527 input_report_rel(dev, REL_Y, -y); 528 529 /* 530 * Most ALPS models report the trackstick buttons in the touchpad 531 * packets, but a few report them here. No reliable way has been 532 * found to differentiate between the models upfront, so we enable 533 * the quirk in response to seeing a button press in the trackstick 534 * packet. 535 */ 536 left = packet[3] & 0x01; 537 right = packet[3] & 0x02; 538 middle = packet[3] & 0x04; 539 540 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) && 541 (left || right || middle)) 542 priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS; 543 544 if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) { 545 input_report_key(dev, BTN_LEFT, left); 546 input_report_key(dev, BTN_RIGHT, right); 547 input_report_key(dev, BTN_MIDDLE, middle); 548 } 549 550 input_sync(dev); 551 return; 552 } 553 554 static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p) 555 { 556 f->left = !!(p[3] & 0x01); 557 f->right = !!(p[3] & 0x02); 558 f->middle = !!(p[3] & 0x04); 559 560 f->ts_left = !!(p[3] & 0x10); 561 f->ts_right = !!(p[3] & 0x20); 562 f->ts_middle = !!(p[3] & 0x40); 563 } 564 565 static int alps_decode_pinnacle(struct alps_fields *f, unsigned char *p, 566 struct psmouse *psmouse) 567 { 568 f->first_mp = !!(p[4] & 0x40); 569 f->is_mp = !!(p[0] & 0x40); 570 571 f->fingers = (p[5] & 0x3) + 1; 572 f->x_map = ((p[4] & 0x7e) << 8) | 573 ((p[1] & 0x7f) << 2) | 574 ((p[0] & 0x30) >> 4); 575 f->y_map = ((p[3] & 0x70) << 4) | 576 ((p[2] & 0x7f) << 1) | 577 (p[4] & 0x01); 578 579 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | 580 ((p[0] & 0x30) >> 4); 581 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); 582 f->pressure = p[5] & 0x7f; 583 584 alps_decode_buttons_v3(f, p); 585 586 return 0; 587 } 588 589 static int alps_decode_rushmore(struct alps_fields *f, unsigned char *p, 590 struct psmouse *psmouse) 591 { 592 alps_decode_pinnacle(f, p, psmouse); 593 594 /* Rushmore's packet decode has a bit difference with Pinnacle's */ 595 f->is_mp = !!(p[5] & 0x40); 596 f->fingers = max((p[5] & 0x3), ((p[5] >> 2) & 0x3)) + 1; 597 f->x_map |= (p[5] & 0x10) << 11; 598 f->y_map |= (p[5] & 0x20) << 6; 599 600 return 0; 601 } 602 603 static int alps_decode_dolphin(struct alps_fields *f, unsigned char *p, 604 struct psmouse *psmouse) 605 { 606 u64 palm_data = 0; 607 struct alps_data *priv = psmouse->private; 608 609 f->first_mp = !!(p[0] & 0x02); 610 f->is_mp = !!(p[0] & 0x20); 611 612 if (!f->is_mp) { 613 f->st.x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7)); 614 f->st.y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3)); 615 f->pressure = (p[0] & 4) ? 0 : p[5] & 0x7f; 616 alps_decode_buttons_v3(f, p); 617 } else { 618 f->fingers = ((p[0] & 0x6) >> 1 | 619 (p[0] & 0x10) >> 2); 620 621 palm_data = (p[1] & 0x7f) | 622 ((p[2] & 0x7f) << 7) | 623 ((p[4] & 0x7f) << 14) | 624 ((p[5] & 0x7f) << 21) | 625 ((p[3] & 0x07) << 28) | 626 (((u64)p[3] & 0x70) << 27) | 627 (((u64)p[0] & 0x01) << 34); 628 629 /* Y-profile is stored in P(0) to p(n-1), n = y_bits; */ 630 f->y_map = palm_data & (BIT(priv->y_bits) - 1); 631 632 /* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */ 633 f->x_map = (palm_data >> priv->y_bits) & 634 (BIT(priv->x_bits) - 1); 635 } 636 637 return 0; 638 } 639 640 static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse) 641 { 642 struct alps_data *priv = psmouse->private; 643 unsigned char *packet = psmouse->packet; 644 struct input_dev *dev2 = priv->dev2; 645 struct alps_fields *f = &priv->f; 646 int fingers = 0; 647 648 memset(f, 0, sizeof(*f)); 649 650 priv->decode_fields(f, packet, psmouse); 651 652 /* 653 * There's no single feature of touchpad position and bitmap packets 654 * that can be used to distinguish between them. We rely on the fact 655 * that a bitmap packet should always follow a position packet with 656 * bit 6 of packet[4] set. 657 */ 658 if (priv->multi_packet) { 659 /* 660 * Sometimes a position packet will indicate a multi-packet 661 * sequence, but then what follows is another position 662 * packet. Check for this, and when it happens process the 663 * position packet as usual. 664 */ 665 if (f->is_mp) { 666 fingers = f->fingers; 667 if (priv->proto_version == ALPS_PROTO_V3 || 668 priv->proto_version == ALPS_PROTO_V3_RUSHMORE) { 669 if (alps_process_bitmap(priv, f) == 0) 670 fingers = 0; /* Use st data */ 671 672 /* Now process position packet */ 673 priv->decode_fields(f, priv->multi_data, 674 psmouse); 675 } else { 676 /* 677 * Because Dolphin uses position packet's 678 * coordinate data as Pt1 and uses it to 679 * calculate Pt2, so we need to do position 680 * packet decode first. 681 */ 682 priv->decode_fields(f, priv->multi_data, 683 psmouse); 684 685 /* 686 * Since Dolphin's finger number is reliable, 687 * there is no need to compare with bmap_fn. 688 */ 689 alps_process_bitmap_dolphin(priv, f); 690 } 691 } else { 692 priv->multi_packet = 0; 693 } 694 } 695 696 /* 697 * Bit 6 of byte 0 is not usually set in position packets. The only 698 * times it seems to be set is in situations where the data is 699 * suspect anyway, e.g. a palm resting flat on the touchpad. Given 700 * this combined with the fact that this bit is useful for filtering 701 * out misidentified bitmap packets, we reject anything with this 702 * bit set. 703 */ 704 if (f->is_mp) 705 return; 706 707 if (!priv->multi_packet && f->first_mp) { 708 priv->multi_packet = 1; 709 memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); 710 return; 711 } 712 713 priv->multi_packet = 0; 714 715 /* 716 * Sometimes the hardware sends a single packet with z = 0 717 * in the middle of a stream. Real releases generate packets 718 * with x, y, and z all zero, so these seem to be flukes. 719 * Ignore them. 720 */ 721 if (f->st.x && f->st.y && !f->pressure) 722 return; 723 724 alps_report_semi_mt_data(psmouse, fingers); 725 726 if ((priv->flags & ALPS_DUALPOINT) && 727 !(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) { 728 input_report_key(dev2, BTN_LEFT, f->ts_left); 729 input_report_key(dev2, BTN_RIGHT, f->ts_right); 730 input_report_key(dev2, BTN_MIDDLE, f->ts_middle); 731 input_sync(dev2); 732 } 733 } 734 735 static void alps_process_packet_v3(struct psmouse *psmouse) 736 { 737 unsigned char *packet = psmouse->packet; 738 739 /* 740 * v3 protocol packets come in three types, two representing 741 * touchpad data and one representing trackstick data. 742 * Trackstick packets seem to be distinguished by always 743 * having 0x3f in the last byte. This value has never been 744 * observed in the last byte of either of the other types 745 * of packets. 746 */ 747 if (packet[5] == 0x3f) { 748 alps_process_trackstick_packet_v3(psmouse); 749 return; 750 } 751 752 alps_process_touchpad_packet_v3_v5(psmouse); 753 } 754 755 static void alps_process_packet_v6(struct psmouse *psmouse) 756 { 757 struct alps_data *priv = psmouse->private; 758 unsigned char *packet = psmouse->packet; 759 struct input_dev *dev = psmouse->dev; 760 struct input_dev *dev2 = priv->dev2; 761 int x, y, z, left, right, middle; 762 763 /* 764 * We can use Byte5 to distinguish if the packet is from Touchpad 765 * or Trackpoint. 766 * Touchpad: 0 - 0x7E 767 * Trackpoint: 0x7F 768 */ 769 if (packet[5] == 0x7F) { 770 /* It should be a DualPoint when received Trackpoint packet */ 771 if (!(priv->flags & ALPS_DUALPOINT)) { 772 psmouse_warn(psmouse, 773 "Rejected trackstick packet from non DualPoint device"); 774 return; 775 } 776 777 /* Trackpoint packet */ 778 x = packet[1] | ((packet[3] & 0x20) << 2); 779 y = packet[2] | ((packet[3] & 0x40) << 1); 780 z = packet[4]; 781 left = packet[3] & 0x01; 782 right = packet[3] & 0x02; 783 middle = packet[3] & 0x04; 784 785 /* To prevent the cursor jump when finger lifted */ 786 if (x == 0x7F && y == 0x7F && z == 0x7F) 787 x = y = z = 0; 788 789 /* Divide 4 since trackpoint's speed is too fast */ 790 input_report_rel(dev2, REL_X, (char)x / 4); 791 input_report_rel(dev2, REL_Y, -((char)y / 4)); 792 793 input_report_key(dev2, BTN_LEFT, left); 794 input_report_key(dev2, BTN_RIGHT, right); 795 input_report_key(dev2, BTN_MIDDLE, middle); 796 797 input_sync(dev2); 798 return; 799 } 800 801 /* Touchpad packet */ 802 x = packet[1] | ((packet[3] & 0x78) << 4); 803 y = packet[2] | ((packet[4] & 0x78) << 4); 804 z = packet[5]; 805 left = packet[3] & 0x01; 806 right = packet[3] & 0x02; 807 808 if (z > 30) 809 input_report_key(dev, BTN_TOUCH, 1); 810 if (z < 25) 811 input_report_key(dev, BTN_TOUCH, 0); 812 813 if (z > 0) { 814 input_report_abs(dev, ABS_X, x); 815 input_report_abs(dev, ABS_Y, y); 816 } 817 818 input_report_abs(dev, ABS_PRESSURE, z); 819 input_report_key(dev, BTN_TOOL_FINGER, z > 0); 820 821 /* v6 touchpad does not have middle button */ 822 input_report_key(dev, BTN_LEFT, left); 823 input_report_key(dev, BTN_RIGHT, right); 824 825 input_sync(dev); 826 } 827 828 static void alps_process_packet_v4(struct psmouse *psmouse) 829 { 830 struct alps_data *priv = psmouse->private; 831 unsigned char *packet = psmouse->packet; 832 struct alps_fields *f = &priv->f; 833 int offset; 834 835 /* 836 * v4 has a 6-byte encoding for bitmap data, but this data is 837 * broken up between 3 normal packets. Use priv->multi_packet to 838 * track our position in the bitmap packet. 839 */ 840 if (packet[6] & 0x40) { 841 /* sync, reset position */ 842 priv->multi_packet = 0; 843 } 844 845 if (WARN_ON_ONCE(priv->multi_packet > 2)) 846 return; 847 848 offset = 2 * priv->multi_packet; 849 priv->multi_data[offset] = packet[6]; 850 priv->multi_data[offset + 1] = packet[7]; 851 852 if (++priv->multi_packet > 2) { 853 priv->multi_packet = 0; 854 855 f->x_map = ((priv->multi_data[2] & 0x1f) << 10) | 856 ((priv->multi_data[3] & 0x60) << 3) | 857 ((priv->multi_data[0] & 0x3f) << 2) | 858 ((priv->multi_data[1] & 0x60) >> 5); 859 f->y_map = ((priv->multi_data[5] & 0x01) << 10) | 860 ((priv->multi_data[3] & 0x1f) << 5) | 861 (priv->multi_data[1] & 0x1f); 862 863 f->fingers = alps_process_bitmap(priv, f); 864 } 865 866 f->left = !!(packet[4] & 0x01); 867 f->right = !!(packet[4] & 0x02); 868 869 f->st.x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) | 870 ((packet[0] & 0x30) >> 4); 871 f->st.y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f); 872 f->pressure = packet[5] & 0x7f; 873 874 alps_report_semi_mt_data(psmouse, f->fingers); 875 } 876 877 static bool alps_is_valid_package_v7(struct psmouse *psmouse) 878 { 879 switch (psmouse->pktcnt) { 880 case 3: 881 return (psmouse->packet[2] & 0x40) == 0x40; 882 case 4: 883 return (psmouse->packet[3] & 0x48) == 0x48; 884 case 6: 885 return (psmouse->packet[5] & 0x40) == 0x00; 886 } 887 return true; 888 } 889 890 static unsigned char alps_get_packet_id_v7(char *byte) 891 { 892 unsigned char packet_id; 893 894 if (byte[4] & 0x40) 895 packet_id = V7_PACKET_ID_TWO; 896 else if (byte[4] & 0x01) 897 packet_id = V7_PACKET_ID_MULTI; 898 else if ((byte[0] & 0x10) && !(byte[4] & 0x43)) 899 packet_id = V7_PACKET_ID_NEW; 900 else if (byte[1] == 0x00 && byte[4] == 0x00) 901 packet_id = V7_PACKET_ID_IDLE; 902 else 903 packet_id = V7_PACKET_ID_UNKNOWN; 904 905 return packet_id; 906 } 907 908 static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt, 909 unsigned char *pkt, 910 unsigned char pkt_id) 911 { 912 mt[0].x = ((pkt[2] & 0x80) << 4); 913 mt[0].x |= ((pkt[2] & 0x3F) << 5); 914 mt[0].x |= ((pkt[3] & 0x30) >> 1); 915 mt[0].x |= (pkt[3] & 0x07); 916 mt[0].y = (pkt[1] << 3) | (pkt[0] & 0x07); 917 918 mt[1].x = ((pkt[3] & 0x80) << 4); 919 mt[1].x |= ((pkt[4] & 0x80) << 3); 920 mt[1].x |= ((pkt[4] & 0x3F) << 4); 921 mt[1].y = ((pkt[5] & 0x80) << 3); 922 mt[1].y |= ((pkt[5] & 0x3F) << 4); 923 924 switch (pkt_id) { 925 case V7_PACKET_ID_TWO: 926 mt[1].x &= ~0x000F; 927 mt[1].y |= 0x000F; 928 break; 929 930 case V7_PACKET_ID_MULTI: 931 mt[1].x &= ~0x003F; 932 mt[1].y &= ~0x0020; 933 mt[1].y |= ((pkt[4] & 0x02) << 4); 934 mt[1].y |= 0x001F; 935 break; 936 937 case V7_PACKET_ID_NEW: 938 mt[1].x &= ~0x003F; 939 mt[1].x |= (pkt[0] & 0x20); 940 mt[1].y |= 0x000F; 941 break; 942 } 943 944 mt[0].y = 0x7FF - mt[0].y; 945 mt[1].y = 0x7FF - mt[1].y; 946 } 947 948 static int alps_get_mt_count(struct input_mt_pos *mt) 949 { 950 int i, fingers = 0; 951 952 for (i = 0; i < MAX_TOUCHES; i++) { 953 if (mt[i].x != 0 || mt[i].y != 0) 954 fingers++; 955 } 956 957 return fingers; 958 } 959 960 static int alps_decode_packet_v7(struct alps_fields *f, 961 unsigned char *p, 962 struct psmouse *psmouse) 963 { 964 struct alps_data *priv = psmouse->private; 965 unsigned char pkt_id; 966 967 pkt_id = alps_get_packet_id_v7(p); 968 if (pkt_id == V7_PACKET_ID_IDLE) 969 return 0; 970 if (pkt_id == V7_PACKET_ID_UNKNOWN) 971 return -1; 972 /* 973 * NEW packets are send to indicate a discontinuity in the finger 974 * coordinate reporting. Specifically a finger may have moved from 975 * slot 0 to 1 or vice versa. INPUT_MT_TRACK takes care of this for 976 * us. 977 * 978 * NEW packets have 3 problems: 979 * 1) They do not contain middle / right button info (on non clickpads) 980 * this can be worked around by preserving the old button state 981 * 2) They do not contain an accurate fingercount, and they are 982 * typically send when the number of fingers changes. We cannot use 983 * the old finger count as that may mismatch with the amount of 984 * touch coordinates we've available in the NEW packet 985 * 3) Their x data for the second touch is inaccurate leading to 986 * a possible jump of the x coordinate by 16 units when the first 987 * non NEW packet comes in 988 * Since problems 2 & 3 cannot be worked around, just ignore them. 989 */ 990 if (pkt_id == V7_PACKET_ID_NEW) 991 return 1; 992 993 alps_get_finger_coordinate_v7(f->mt, p, pkt_id); 994 995 if (pkt_id == V7_PACKET_ID_TWO) 996 f->fingers = alps_get_mt_count(f->mt); 997 else /* pkt_id == V7_PACKET_ID_MULTI */ 998 f->fingers = 3 + (p[5] & 0x03); 999 1000 f->left = (p[0] & 0x80) >> 7; 1001 if (priv->flags & ALPS_BUTTONPAD) { 1002 if (p[0] & 0x20) 1003 f->fingers++; 1004 if (p[0] & 0x10) 1005 f->fingers++; 1006 } else { 1007 f->right = (p[0] & 0x20) >> 5; 1008 f->middle = (p[0] & 0x10) >> 4; 1009 } 1010 1011 /* Sometimes a single touch is reported in mt[1] rather then mt[0] */ 1012 if (f->fingers == 1 && f->mt[0].x == 0 && f->mt[0].y == 0) { 1013 f->mt[0].x = f->mt[1].x; 1014 f->mt[0].y = f->mt[1].y; 1015 f->mt[1].x = 0; 1016 f->mt[1].y = 0; 1017 } 1018 1019 return 0; 1020 } 1021 1022 static void alps_process_trackstick_packet_v7(struct psmouse *psmouse) 1023 { 1024 struct alps_data *priv = psmouse->private; 1025 unsigned char *packet = psmouse->packet; 1026 struct input_dev *dev2 = priv->dev2; 1027 int x, y, z, left, right, middle; 1028 1029 /* It should be a DualPoint when received trackstick packet */ 1030 if (!(priv->flags & ALPS_DUALPOINT)) { 1031 psmouse_warn(psmouse, 1032 "Rejected trackstick packet from non DualPoint device"); 1033 return; 1034 } 1035 1036 x = ((packet[2] & 0xbf)) | ((packet[3] & 0x10) << 2); 1037 y = (packet[3] & 0x07) | (packet[4] & 0xb8) | 1038 ((packet[3] & 0x20) << 1); 1039 z = (packet[5] & 0x3f) | ((packet[3] & 0x80) >> 1); 1040 1041 left = (packet[1] & 0x01); 1042 right = (packet[1] & 0x02) >> 1; 1043 middle = (packet[1] & 0x04) >> 2; 1044 1045 /* Divide 2 since trackpoint's speed is too fast */ 1046 input_report_rel(dev2, REL_X, (char)x / 2); 1047 input_report_rel(dev2, REL_Y, -((char)y / 2)); 1048 1049 input_report_key(dev2, BTN_LEFT, left); 1050 input_report_key(dev2, BTN_RIGHT, right); 1051 input_report_key(dev2, BTN_MIDDLE, middle); 1052 1053 input_sync(dev2); 1054 } 1055 1056 static void alps_process_touchpad_packet_v7(struct psmouse *psmouse) 1057 { 1058 struct alps_data *priv = psmouse->private; 1059 struct input_dev *dev = psmouse->dev; 1060 struct alps_fields *f = &priv->f; 1061 1062 memset(f, 0, sizeof(*f)); 1063 1064 if (priv->decode_fields(f, psmouse->packet, psmouse)) 1065 return; 1066 1067 alps_report_mt_data(psmouse, alps_get_mt_count(f->mt)); 1068 1069 input_mt_report_finger_count(dev, f->fingers); 1070 1071 input_report_key(dev, BTN_LEFT, f->left); 1072 input_report_key(dev, BTN_RIGHT, f->right); 1073 input_report_key(dev, BTN_MIDDLE, f->middle); 1074 1075 input_sync(dev); 1076 } 1077 1078 static void alps_process_packet_v7(struct psmouse *psmouse) 1079 { 1080 unsigned char *packet = psmouse->packet; 1081 1082 if (packet[0] == 0x48 && (packet[4] & 0x47) == 0x06) 1083 alps_process_trackstick_packet_v7(psmouse); 1084 else 1085 alps_process_touchpad_packet_v7(psmouse); 1086 } 1087 1088 static DEFINE_MUTEX(alps_mutex); 1089 1090 static void alps_register_bare_ps2_mouse(struct work_struct *work) 1091 { 1092 struct alps_data *priv = 1093 container_of(work, struct alps_data, dev3_register_work.work); 1094 struct psmouse *psmouse = priv->psmouse; 1095 struct input_dev *dev3; 1096 int error = 0; 1097 1098 mutex_lock(&alps_mutex); 1099 1100 if (priv->dev3) 1101 goto out; 1102 1103 dev3 = input_allocate_device(); 1104 if (!dev3) { 1105 psmouse_err(psmouse, "failed to allocate secondary device\n"); 1106 error = -ENOMEM; 1107 goto out; 1108 } 1109 1110 snprintf(priv->phys3, sizeof(priv->phys3), "%s/%s", 1111 psmouse->ps2dev.serio->phys, 1112 (priv->dev2 ? "input2" : "input1")); 1113 dev3->phys = priv->phys3; 1114 1115 /* 1116 * format of input device name is: "protocol vendor name" 1117 * see function psmouse_switch_protocol() in psmouse-base.c 1118 */ 1119 dev3->name = "PS/2 ALPS Mouse"; 1120 1121 dev3->id.bustype = BUS_I8042; 1122 dev3->id.vendor = 0x0002; 1123 dev3->id.product = PSMOUSE_PS2; 1124 dev3->id.version = 0x0000; 1125 dev3->dev.parent = &psmouse->ps2dev.serio->dev; 1126 1127 input_set_capability(dev3, EV_REL, REL_X); 1128 input_set_capability(dev3, EV_REL, REL_Y); 1129 input_set_capability(dev3, EV_KEY, BTN_LEFT); 1130 input_set_capability(dev3, EV_KEY, BTN_RIGHT); 1131 input_set_capability(dev3, EV_KEY, BTN_MIDDLE); 1132 1133 __set_bit(INPUT_PROP_POINTER, dev3->propbit); 1134 1135 error = input_register_device(dev3); 1136 if (error) { 1137 psmouse_err(psmouse, 1138 "failed to register secondary device: %d\n", 1139 error); 1140 input_free_device(dev3); 1141 goto out; 1142 } 1143 1144 priv->dev3 = dev3; 1145 1146 out: 1147 /* 1148 * Save the error code so that we can detect that we 1149 * already tried to create the device. 1150 */ 1151 if (error) 1152 priv->dev3 = ERR_PTR(error); 1153 1154 mutex_unlock(&alps_mutex); 1155 } 1156 1157 static void alps_report_bare_ps2_packet(struct psmouse *psmouse, 1158 unsigned char packet[], 1159 bool report_buttons) 1160 { 1161 struct alps_data *priv = psmouse->private; 1162 struct input_dev *dev; 1163 1164 /* Figure out which device to use to report the bare packet */ 1165 if (priv->proto_version == ALPS_PROTO_V2 && 1166 (priv->flags & ALPS_DUALPOINT)) { 1167 /* On V2 devices the DualPoint Stick reports bare packets */ 1168 dev = priv->dev2; 1169 } else if (unlikely(IS_ERR_OR_NULL(priv->dev3))) { 1170 /* Register dev3 mouse if we received PS/2 packet first time */ 1171 if (!IS_ERR(priv->dev3)) 1172 psmouse_queue_work(psmouse, &priv->dev3_register_work, 1173 0); 1174 return; 1175 } else { 1176 dev = priv->dev3; 1177 } 1178 1179 if (report_buttons) 1180 alps_report_buttons(dev, NULL, 1181 packet[0] & 1, packet[0] & 2, packet[0] & 4); 1182 1183 input_report_rel(dev, REL_X, 1184 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0); 1185 input_report_rel(dev, REL_Y, 1186 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0); 1187 1188 input_sync(dev); 1189 } 1190 1191 static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse) 1192 { 1193 struct alps_data *priv = psmouse->private; 1194 1195 if (psmouse->pktcnt < 6) 1196 return PSMOUSE_GOOD_DATA; 1197 1198 if (psmouse->pktcnt == 6) { 1199 /* 1200 * Start a timer to flush the packet if it ends up last 1201 * 6-byte packet in the stream. Timer needs to fire 1202 * psmouse core times out itself. 20 ms should be enough 1203 * to decide if we are getting more data or not. 1204 */ 1205 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20)); 1206 return PSMOUSE_GOOD_DATA; 1207 } 1208 1209 del_timer(&priv->timer); 1210 1211 if (psmouse->packet[6] & 0x80) { 1212 1213 /* 1214 * Highest bit is set - that means we either had 1215 * complete ALPS packet and this is start of the 1216 * next packet or we got garbage. 1217 */ 1218 1219 if (((psmouse->packet[3] | 1220 psmouse->packet[4] | 1221 psmouse->packet[5]) & 0x80) || 1222 (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) { 1223 psmouse_dbg(psmouse, 1224 "refusing packet %4ph (suspected interleaved ps/2)\n", 1225 psmouse->packet + 3); 1226 return PSMOUSE_BAD_DATA; 1227 } 1228 1229 priv->process_packet(psmouse); 1230 1231 /* Continue with the next packet */ 1232 psmouse->packet[0] = psmouse->packet[6]; 1233 psmouse->pktcnt = 1; 1234 1235 } else { 1236 1237 /* 1238 * High bit is 0 - that means that we indeed got a PS/2 1239 * packet in the middle of ALPS packet. 1240 * 1241 * There is also possibility that we got 6-byte ALPS 1242 * packet followed by 3-byte packet from trackpoint. We 1243 * can not distinguish between these 2 scenarios but 1244 * because the latter is unlikely to happen in course of 1245 * normal operation (user would need to press all 1246 * buttons on the pad and start moving trackpoint 1247 * without touching the pad surface) we assume former. 1248 * Even if we are wrong the wost thing that would happen 1249 * the cursor would jump but we should not get protocol 1250 * de-synchronization. 1251 */ 1252 1253 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3], 1254 false); 1255 1256 /* 1257 * Continue with the standard ALPS protocol handling, 1258 * but make sure we won't process it as an interleaved 1259 * packet again, which may happen if all buttons are 1260 * pressed. To avoid this let's reset the 4th bit which 1261 * is normally 1. 1262 */ 1263 psmouse->packet[3] = psmouse->packet[6] & 0xf7; 1264 psmouse->pktcnt = 4; 1265 } 1266 1267 return PSMOUSE_GOOD_DATA; 1268 } 1269 1270 static void alps_flush_packet(unsigned long data) 1271 { 1272 struct psmouse *psmouse = (struct psmouse *)data; 1273 struct alps_data *priv = psmouse->private; 1274 1275 serio_pause_rx(psmouse->ps2dev.serio); 1276 1277 if (psmouse->pktcnt == psmouse->pktsize) { 1278 1279 /* 1280 * We did not any more data in reasonable amount of time. 1281 * Validate the last 3 bytes and process as a standard 1282 * ALPS packet. 1283 */ 1284 if ((psmouse->packet[3] | 1285 psmouse->packet[4] | 1286 psmouse->packet[5]) & 0x80) { 1287 psmouse_dbg(psmouse, 1288 "refusing packet %3ph (suspected interleaved ps/2)\n", 1289 psmouse->packet + 3); 1290 } else { 1291 priv->process_packet(psmouse); 1292 } 1293 psmouse->pktcnt = 0; 1294 } 1295 1296 serio_continue_rx(psmouse->ps2dev.serio); 1297 } 1298 1299 static psmouse_ret_t alps_process_byte(struct psmouse *psmouse) 1300 { 1301 struct alps_data *priv = psmouse->private; 1302 1303 /* 1304 * Check if we are dealing with a bare PS/2 packet, presumably from 1305 * a device connected to the external PS/2 port. Because bare PS/2 1306 * protocol does not have enough constant bits to self-synchronize 1307 * properly we only do this if the device is fully synchronized. 1308 */ 1309 if (!psmouse->out_of_sync_cnt && (psmouse->packet[0] & 0xc8) == 0x08) { 1310 if (psmouse->pktcnt == 3) { 1311 alps_report_bare_ps2_packet(psmouse, psmouse->packet, 1312 true); 1313 return PSMOUSE_FULL_PACKET; 1314 } 1315 return PSMOUSE_GOOD_DATA; 1316 } 1317 1318 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */ 1319 1320 if ((priv->flags & ALPS_PS2_INTERLEAVED) && 1321 psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) { 1322 return alps_handle_interleaved_ps2(psmouse); 1323 } 1324 1325 if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) { 1326 psmouse_dbg(psmouse, 1327 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n", 1328 psmouse->packet[0], priv->mask0, priv->byte0); 1329 return PSMOUSE_BAD_DATA; 1330 } 1331 1332 /* Bytes 2 - pktsize should have 0 in the highest bit */ 1333 if (priv->proto_version < ALPS_PROTO_V5 && 1334 psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize && 1335 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) { 1336 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1337 psmouse->pktcnt - 1, 1338 psmouse->packet[psmouse->pktcnt - 1]); 1339 1340 if (priv->proto_version == ALPS_PROTO_V3_RUSHMORE && 1341 psmouse->pktcnt == psmouse->pktsize) { 1342 /* 1343 * Some Dell boxes, such as Latitude E6440 or E7440 1344 * with closed lid, quite often smash last byte of 1345 * otherwise valid packet with 0xff. Given that the 1346 * next packet is very likely to be valid let's 1347 * report PSMOUSE_FULL_PACKET but not process data, 1348 * rather than reporting PSMOUSE_BAD_DATA and 1349 * filling the logs. 1350 */ 1351 return PSMOUSE_FULL_PACKET; 1352 } 1353 1354 return PSMOUSE_BAD_DATA; 1355 } 1356 1357 if (priv->proto_version == ALPS_PROTO_V7 && 1358 !alps_is_valid_package_v7(psmouse)) { 1359 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1360 psmouse->pktcnt - 1, 1361 psmouse->packet[psmouse->pktcnt - 1]); 1362 return PSMOUSE_BAD_DATA; 1363 } 1364 1365 if (psmouse->pktcnt == psmouse->pktsize) { 1366 priv->process_packet(psmouse); 1367 return PSMOUSE_FULL_PACKET; 1368 } 1369 1370 return PSMOUSE_GOOD_DATA; 1371 } 1372 1373 static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble) 1374 { 1375 struct ps2dev *ps2dev = &psmouse->ps2dev; 1376 struct alps_data *priv = psmouse->private; 1377 int command; 1378 unsigned char *param; 1379 unsigned char dummy[4]; 1380 1381 BUG_ON(nibble > 0xf); 1382 1383 command = priv->nibble_commands[nibble].command; 1384 param = (command & 0x0f00) ? 1385 dummy : (unsigned char *)&priv->nibble_commands[nibble].data; 1386 1387 if (ps2_command(ps2dev, param, command)) 1388 return -1; 1389 1390 return 0; 1391 } 1392 1393 static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr) 1394 { 1395 struct ps2dev *ps2dev = &psmouse->ps2dev; 1396 struct alps_data *priv = psmouse->private; 1397 int i, nibble; 1398 1399 if (ps2_command(ps2dev, NULL, priv->addr_command)) 1400 return -1; 1401 1402 for (i = 12; i >= 0; i -= 4) { 1403 nibble = (addr >> i) & 0xf; 1404 if (alps_command_mode_send_nibble(psmouse, nibble)) 1405 return -1; 1406 } 1407 1408 return 0; 1409 } 1410 1411 static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1412 { 1413 struct ps2dev *ps2dev = &psmouse->ps2dev; 1414 unsigned char param[4]; 1415 1416 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1417 return -1; 1418 1419 /* 1420 * The address being read is returned in the first two bytes 1421 * of the result. Check that this address matches the expected 1422 * address. 1423 */ 1424 if (addr != ((param[0] << 8) | param[1])) 1425 return -1; 1426 1427 return param[2]; 1428 } 1429 1430 static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1431 { 1432 if (alps_command_mode_set_addr(psmouse, addr)) 1433 return -1; 1434 return __alps_command_mode_read_reg(psmouse, addr); 1435 } 1436 1437 static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value) 1438 { 1439 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf)) 1440 return -1; 1441 if (alps_command_mode_send_nibble(psmouse, value & 0xf)) 1442 return -1; 1443 return 0; 1444 } 1445 1446 static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr, 1447 u8 value) 1448 { 1449 if (alps_command_mode_set_addr(psmouse, addr)) 1450 return -1; 1451 return __alps_command_mode_write_reg(psmouse, value); 1452 } 1453 1454 static int alps_rpt_cmd(struct psmouse *psmouse, int init_command, 1455 int repeated_command, unsigned char *param) 1456 { 1457 struct ps2dev *ps2dev = &psmouse->ps2dev; 1458 1459 param[0] = 0; 1460 if (init_command && ps2_command(ps2dev, param, init_command)) 1461 return -EIO; 1462 1463 if (ps2_command(ps2dev, NULL, repeated_command) || 1464 ps2_command(ps2dev, NULL, repeated_command) || 1465 ps2_command(ps2dev, NULL, repeated_command)) 1466 return -EIO; 1467 1468 param[0] = param[1] = param[2] = 0xff; 1469 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1470 return -EIO; 1471 1472 psmouse_dbg(psmouse, "%2.2X report: %3ph\n", 1473 repeated_command, param); 1474 return 0; 1475 } 1476 1477 static bool alps_check_valid_firmware_id(unsigned char id[]) 1478 { 1479 if (id[0] == 0x73) 1480 return true; 1481 1482 if (id[0] == 0x88 && 1483 (id[1] == 0x07 || 1484 id[1] == 0x08 || 1485 (id[1] & 0xf0) == 0xb0 || 1486 (id[1] & 0xf0) == 0xc0)) { 1487 return true; 1488 } 1489 1490 return false; 1491 } 1492 1493 static int alps_enter_command_mode(struct psmouse *psmouse) 1494 { 1495 unsigned char param[4]; 1496 1497 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) { 1498 psmouse_err(psmouse, "failed to enter command mode\n"); 1499 return -1; 1500 } 1501 1502 if (!alps_check_valid_firmware_id(param)) { 1503 psmouse_dbg(psmouse, 1504 "unknown response while entering command mode\n"); 1505 return -1; 1506 } 1507 return 0; 1508 } 1509 1510 static inline int alps_exit_command_mode(struct psmouse *psmouse) 1511 { 1512 struct ps2dev *ps2dev = &psmouse->ps2dev; 1513 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) 1514 return -1; 1515 return 0; 1516 } 1517 1518 /* 1519 * For DualPoint devices select the device that should respond to 1520 * subsequent commands. It looks like glidepad is behind stickpointer, 1521 * I'd thought it would be other way around... 1522 */ 1523 static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable) 1524 { 1525 struct ps2dev *ps2dev = &psmouse->ps2dev; 1526 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11; 1527 1528 if (ps2_command(ps2dev, NULL, cmd) || 1529 ps2_command(ps2dev, NULL, cmd) || 1530 ps2_command(ps2dev, NULL, cmd) || 1531 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1532 return -1; 1533 1534 /* we may get 3 more bytes, just ignore them */ 1535 ps2_drain(ps2dev, 3, 100); 1536 1537 return 0; 1538 } 1539 1540 static int alps_absolute_mode_v1_v2(struct psmouse *psmouse) 1541 { 1542 struct ps2dev *ps2dev = &psmouse->ps2dev; 1543 1544 /* Try ALPS magic knock - 4 disable before enable */ 1545 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1546 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1547 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1548 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1549 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) 1550 return -1; 1551 1552 /* 1553 * Switch mouse to poll (remote) mode so motion data will not 1554 * get in our way 1555 */ 1556 return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL); 1557 } 1558 1559 static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word) 1560 { 1561 int i, nibble; 1562 1563 /* 1564 * b0-b11 are valid bits, send sequence is inverse. 1565 * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1 1566 */ 1567 for (i = 0; i <= 8; i += 4) { 1568 nibble = (word >> i) & 0xf; 1569 if (alps_command_mode_send_nibble(psmouse, nibble)) 1570 return -1; 1571 } 1572 1573 return 0; 1574 } 1575 1576 static int alps_monitor_mode_write_reg(struct psmouse *psmouse, 1577 u16 addr, u16 value) 1578 { 1579 struct ps2dev *ps2dev = &psmouse->ps2dev; 1580 1581 /* 0x0A0 is the command to write the word */ 1582 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) || 1583 alps_monitor_mode_send_word(psmouse, 0x0A0) || 1584 alps_monitor_mode_send_word(psmouse, addr) || 1585 alps_monitor_mode_send_word(psmouse, value) || 1586 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1587 return -1; 1588 1589 return 0; 1590 } 1591 1592 static int alps_monitor_mode(struct psmouse *psmouse, bool enable) 1593 { 1594 struct ps2dev *ps2dev = &psmouse->ps2dev; 1595 1596 if (enable) { 1597 /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */ 1598 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 1599 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) || 1600 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1601 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1602 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1603 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1604 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1605 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO)) 1606 return -1; 1607 } else { 1608 /* EC to exit monitor mode */ 1609 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP)) 1610 return -1; 1611 } 1612 1613 return 0; 1614 } 1615 1616 static int alps_absolute_mode_v6(struct psmouse *psmouse) 1617 { 1618 u16 reg_val = 0x181; 1619 int ret = -1; 1620 1621 /* enter monitor mode, to write the register */ 1622 if (alps_monitor_mode(psmouse, true)) 1623 return -1; 1624 1625 ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val); 1626 1627 if (alps_monitor_mode(psmouse, false)) 1628 ret = -1; 1629 1630 return ret; 1631 } 1632 1633 static int alps_get_status(struct psmouse *psmouse, char *param) 1634 { 1635 /* Get status: 0xF5 0xF5 0xF5 0xE9 */ 1636 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param)) 1637 return -1; 1638 1639 return 0; 1640 } 1641 1642 /* 1643 * Turn touchpad tapping on or off. The sequences are: 1644 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable, 1645 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable. 1646 * My guess that 0xE9 (GetInfo) is here as a sync point. 1647 * For models that also have stickpointer (DualPoints) its tapping 1648 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but 1649 * we don't fiddle with it. 1650 */ 1651 static int alps_tap_mode(struct psmouse *psmouse, int enable) 1652 { 1653 struct ps2dev *ps2dev = &psmouse->ps2dev; 1654 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES; 1655 unsigned char tap_arg = enable ? 0x0A : 0x00; 1656 unsigned char param[4]; 1657 1658 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) || 1659 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1660 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1661 ps2_command(ps2dev, &tap_arg, cmd)) 1662 return -1; 1663 1664 if (alps_get_status(psmouse, param)) 1665 return -1; 1666 1667 return 0; 1668 } 1669 1670 /* 1671 * alps_poll() - poll the touchpad for current motion packet. 1672 * Used in resync. 1673 */ 1674 static int alps_poll(struct psmouse *psmouse) 1675 { 1676 struct alps_data *priv = psmouse->private; 1677 unsigned char buf[sizeof(psmouse->packet)]; 1678 bool poll_failed; 1679 1680 if (priv->flags & ALPS_PASS) 1681 alps_passthrough_mode_v2(psmouse, true); 1682 1683 poll_failed = ps2_command(&psmouse->ps2dev, buf, 1684 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0; 1685 1686 if (priv->flags & ALPS_PASS) 1687 alps_passthrough_mode_v2(psmouse, false); 1688 1689 if (poll_failed || (buf[0] & priv->mask0) != priv->byte0) 1690 return -1; 1691 1692 if ((psmouse->badbyte & 0xc8) == 0x08) { 1693 /* 1694 * Poll the track stick ... 1695 */ 1696 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8))) 1697 return -1; 1698 } 1699 1700 memcpy(psmouse->packet, buf, sizeof(buf)); 1701 return 0; 1702 } 1703 1704 static int alps_hw_init_v1_v2(struct psmouse *psmouse) 1705 { 1706 struct alps_data *priv = psmouse->private; 1707 1708 if ((priv->flags & ALPS_PASS) && 1709 alps_passthrough_mode_v2(psmouse, true)) { 1710 return -1; 1711 } 1712 1713 if (alps_tap_mode(psmouse, true)) { 1714 psmouse_warn(psmouse, "Failed to enable hardware tapping\n"); 1715 return -1; 1716 } 1717 1718 if (alps_absolute_mode_v1_v2(psmouse)) { 1719 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 1720 return -1; 1721 } 1722 1723 if ((priv->flags & ALPS_PASS) && 1724 alps_passthrough_mode_v2(psmouse, false)) { 1725 return -1; 1726 } 1727 1728 /* ALPS needs stream mode, otherwise it won't report any data */ 1729 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) { 1730 psmouse_err(psmouse, "Failed to enable stream mode\n"); 1731 return -1; 1732 } 1733 1734 return 0; 1735 } 1736 1737 static int alps_hw_init_v6(struct psmouse *psmouse) 1738 { 1739 unsigned char param[2] = {0xC8, 0x14}; 1740 1741 /* Enter passthrough mode to let trackpoint enter 6byte raw mode */ 1742 if (alps_passthrough_mode_v2(psmouse, true)) 1743 return -1; 1744 1745 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1746 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1747 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1748 ps2_command(&psmouse->ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 1749 ps2_command(&psmouse->ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 1750 return -1; 1751 1752 if (alps_passthrough_mode_v2(psmouse, false)) 1753 return -1; 1754 1755 if (alps_absolute_mode_v6(psmouse)) { 1756 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 1757 return -1; 1758 } 1759 1760 return 0; 1761 } 1762 1763 /* 1764 * Enable or disable passthrough mode to the trackstick. 1765 */ 1766 static int alps_passthrough_mode_v3(struct psmouse *psmouse, 1767 int reg_base, bool enable) 1768 { 1769 int reg_val, ret = -1; 1770 1771 if (alps_enter_command_mode(psmouse)) 1772 return -1; 1773 1774 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008); 1775 if (reg_val == -1) 1776 goto error; 1777 1778 if (enable) 1779 reg_val |= 0x01; 1780 else 1781 reg_val &= ~0x01; 1782 1783 ret = __alps_command_mode_write_reg(psmouse, reg_val); 1784 1785 error: 1786 if (alps_exit_command_mode(psmouse)) 1787 ret = -1; 1788 return ret; 1789 } 1790 1791 /* Must be in command mode when calling this function */ 1792 static int alps_absolute_mode_v3(struct psmouse *psmouse) 1793 { 1794 int reg_val; 1795 1796 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 1797 if (reg_val == -1) 1798 return -1; 1799 1800 reg_val |= 0x06; 1801 if (__alps_command_mode_write_reg(psmouse, reg_val)) 1802 return -1; 1803 1804 return 0; 1805 } 1806 1807 static int alps_probe_trackstick_v3(struct psmouse *psmouse, int reg_base) 1808 { 1809 int ret = -EIO, reg_val; 1810 1811 if (alps_enter_command_mode(psmouse)) 1812 goto error; 1813 1814 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08); 1815 if (reg_val == -1) 1816 goto error; 1817 1818 /* bit 7: trackstick is present */ 1819 ret = reg_val & 0x80 ? 0 : -ENODEV; 1820 1821 error: 1822 alps_exit_command_mode(psmouse); 1823 return ret; 1824 } 1825 1826 static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base) 1827 { 1828 struct ps2dev *ps2dev = &psmouse->ps2dev; 1829 int ret = 0; 1830 unsigned char param[4]; 1831 1832 if (alps_passthrough_mode_v3(psmouse, reg_base, true)) 1833 return -EIO; 1834 1835 /* 1836 * E7 report for the trackstick 1837 * 1838 * There have been reports of failures to seem to trace back 1839 * to the above trackstick check failing. When these occur 1840 * this E7 report fails, so when that happens we continue 1841 * with the assumption that there isn't a trackstick after 1842 * all. 1843 */ 1844 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) { 1845 psmouse_warn(psmouse, "Failed to initialize trackstick (E7 report failed)\n"); 1846 ret = -ENODEV; 1847 } else { 1848 psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param); 1849 1850 /* 1851 * Not sure what this does, but it is absolutely 1852 * essential. Without it, the touchpad does not 1853 * work at all and the trackstick just emits normal 1854 * PS/2 packets. 1855 */ 1856 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1857 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1858 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1859 alps_command_mode_send_nibble(psmouse, 0x9) || 1860 alps_command_mode_send_nibble(psmouse, 0x4)) { 1861 psmouse_err(psmouse, 1862 "Error sending magic E6 sequence\n"); 1863 ret = -EIO; 1864 goto error; 1865 } 1866 1867 /* 1868 * This ensures the trackstick packets are in the format 1869 * supported by this driver. If bit 1 isn't set the packet 1870 * format is different. 1871 */ 1872 if (alps_enter_command_mode(psmouse) || 1873 alps_command_mode_write_reg(psmouse, 1874 reg_base + 0x08, 0x82) || 1875 alps_exit_command_mode(psmouse)) 1876 ret = -EIO; 1877 } 1878 1879 error: 1880 if (alps_passthrough_mode_v3(psmouse, reg_base, false)) 1881 ret = -EIO; 1882 1883 return ret; 1884 } 1885 1886 static int alps_hw_init_v3(struct psmouse *psmouse) 1887 { 1888 struct ps2dev *ps2dev = &psmouse->ps2dev; 1889 int reg_val; 1890 unsigned char param[4]; 1891 1892 reg_val = alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE); 1893 if (reg_val == -EIO) 1894 goto error; 1895 1896 if (reg_val == 0 && 1897 alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO) 1898 goto error; 1899 1900 if (alps_enter_command_mode(psmouse) || 1901 alps_absolute_mode_v3(psmouse)) { 1902 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 1903 goto error; 1904 } 1905 1906 reg_val = alps_command_mode_read_reg(psmouse, 0x0006); 1907 if (reg_val == -1) 1908 goto error; 1909 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 1910 goto error; 1911 1912 reg_val = alps_command_mode_read_reg(psmouse, 0x0007); 1913 if (reg_val == -1) 1914 goto error; 1915 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 1916 goto error; 1917 1918 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1) 1919 goto error; 1920 if (__alps_command_mode_write_reg(psmouse, 0x04)) 1921 goto error; 1922 1923 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1) 1924 goto error; 1925 if (__alps_command_mode_write_reg(psmouse, 0x03)) 1926 goto error; 1927 1928 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1) 1929 goto error; 1930 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03)) 1931 goto error; 1932 1933 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1) 1934 goto error; 1935 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04)) 1936 goto error; 1937 1938 alps_exit_command_mode(psmouse); 1939 1940 /* Set rate and enable data reporting */ 1941 param[0] = 0x64; 1942 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 1943 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 1944 psmouse_err(psmouse, "Failed to enable data reporting\n"); 1945 return -1; 1946 } 1947 1948 return 0; 1949 1950 error: 1951 /* 1952 * Leaving the touchpad in command mode will essentially render 1953 * it unusable until the machine reboots, so exit it here just 1954 * to be safe 1955 */ 1956 alps_exit_command_mode(psmouse); 1957 return -1; 1958 } 1959 1960 static int alps_get_v3_v7_resolution(struct psmouse *psmouse, int reg_pitch) 1961 { 1962 int reg, x_pitch, y_pitch, x_electrode, y_electrode, x_phys, y_phys; 1963 struct alps_data *priv = psmouse->private; 1964 1965 reg = alps_command_mode_read_reg(psmouse, reg_pitch); 1966 if (reg < 0) 1967 return reg; 1968 1969 x_pitch = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ 1970 x_pitch = 50 + 2 * x_pitch; /* In 0.1 mm units */ 1971 1972 y_pitch = (char)reg >> 4; /* sign extend upper 4 bits */ 1973 y_pitch = 36 + 2 * y_pitch; /* In 0.1 mm units */ 1974 1975 reg = alps_command_mode_read_reg(psmouse, reg_pitch + 1); 1976 if (reg < 0) 1977 return reg; 1978 1979 x_electrode = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ 1980 x_electrode = 17 + x_electrode; 1981 1982 y_electrode = (char)reg >> 4; /* sign extend upper 4 bits */ 1983 y_electrode = 13 + y_electrode; 1984 1985 x_phys = x_pitch * (x_electrode - 1); /* In 0.1 mm units */ 1986 y_phys = y_pitch * (y_electrode - 1); /* In 0.1 mm units */ 1987 1988 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ 1989 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ 1990 1991 psmouse_dbg(psmouse, 1992 "pitch %dx%d num-electrodes %dx%d physical size %dx%d mm res %dx%d\n", 1993 x_pitch, y_pitch, x_electrode, y_electrode, 1994 x_phys / 10, y_phys / 10, priv->x_res, priv->y_res); 1995 1996 return 0; 1997 } 1998 1999 static int alps_hw_init_rushmore_v3(struct psmouse *psmouse) 2000 { 2001 struct alps_data *priv = psmouse->private; 2002 struct ps2dev *ps2dev = &psmouse->ps2dev; 2003 int reg_val, ret = -1; 2004 2005 if (priv->flags & ALPS_DUALPOINT) { 2006 reg_val = alps_setup_trackstick_v3(psmouse, 2007 ALPS_REG_BASE_RUSHMORE); 2008 if (reg_val == -EIO) 2009 goto error; 2010 } 2011 2012 if (alps_enter_command_mode(psmouse) || 2013 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 || 2014 alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00)) 2015 goto error; 2016 2017 if (alps_get_v3_v7_resolution(psmouse, 0xc2da)) 2018 goto error; 2019 2020 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6); 2021 if (reg_val == -1) 2022 goto error; 2023 if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd)) 2024 goto error; 2025 2026 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 2027 goto error; 2028 2029 /* enter absolute mode */ 2030 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 2031 if (reg_val == -1) 2032 goto error; 2033 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 2034 goto error; 2035 2036 alps_exit_command_mode(psmouse); 2037 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2038 2039 error: 2040 alps_exit_command_mode(psmouse); 2041 return ret; 2042 } 2043 2044 /* Must be in command mode when calling this function */ 2045 static int alps_absolute_mode_v4(struct psmouse *psmouse) 2046 { 2047 int reg_val; 2048 2049 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 2050 if (reg_val == -1) 2051 return -1; 2052 2053 reg_val |= 0x02; 2054 if (__alps_command_mode_write_reg(psmouse, reg_val)) 2055 return -1; 2056 2057 return 0; 2058 } 2059 2060 static int alps_hw_init_v4(struct psmouse *psmouse) 2061 { 2062 struct ps2dev *ps2dev = &psmouse->ps2dev; 2063 unsigned char param[4]; 2064 2065 if (alps_enter_command_mode(psmouse)) 2066 goto error; 2067 2068 if (alps_absolute_mode_v4(psmouse)) { 2069 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 2070 goto error; 2071 } 2072 2073 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c)) 2074 goto error; 2075 2076 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03)) 2077 goto error; 2078 2079 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03)) 2080 goto error; 2081 2082 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15)) 2083 goto error; 2084 2085 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01)) 2086 goto error; 2087 2088 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03)) 2089 goto error; 2090 2091 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03)) 2092 goto error; 2093 2094 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03)) 2095 goto error; 2096 2097 alps_exit_command_mode(psmouse); 2098 2099 /* 2100 * This sequence changes the output from a 9-byte to an 2101 * 8-byte format. All the same data seems to be present, 2102 * just in a more compact format. 2103 */ 2104 param[0] = 0xc8; 2105 param[1] = 0x64; 2106 param[2] = 0x50; 2107 if (ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2108 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE) || 2109 ps2_command(ps2dev, ¶m[2], PSMOUSE_CMD_SETRATE) || 2110 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) 2111 return -1; 2112 2113 /* Set rate and enable data reporting */ 2114 param[0] = 0x64; 2115 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 2116 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 2117 psmouse_err(psmouse, "Failed to enable data reporting\n"); 2118 return -1; 2119 } 2120 2121 return 0; 2122 2123 error: 2124 /* 2125 * Leaving the touchpad in command mode will essentially render 2126 * it unusable until the machine reboots, so exit it here just 2127 * to be safe 2128 */ 2129 alps_exit_command_mode(psmouse); 2130 return -1; 2131 } 2132 2133 static int alps_dolphin_get_device_area(struct psmouse *psmouse, 2134 struct alps_data *priv) 2135 { 2136 struct ps2dev *ps2dev = &psmouse->ps2dev; 2137 unsigned char param[4] = {0}; 2138 int num_x_electrode, num_y_electrode; 2139 2140 if (alps_enter_command_mode(psmouse)) 2141 return -1; 2142 2143 param[0] = 0x0a; 2144 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 2145 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2146 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2147 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2148 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE)) 2149 return -1; 2150 2151 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 2152 return -1; 2153 2154 /* 2155 * Dolphin's sensor line number is not fixed. It can be calculated 2156 * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET. 2157 * Further more, we can get device's x_max and y_max by multiplying 2158 * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE. 2159 * 2160 * e.g. When we get register's sensor_x = 11 & sensor_y = 8, 2161 * real sensor line number X = 11 + 8 = 19, and 2162 * real sensor line number Y = 8 + 1 = 9. 2163 * So, x_max = (19 - 1) * 64 = 1152, and 2164 * y_max = (9 - 1) * 64 = 512. 2165 */ 2166 num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F); 2167 num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F); 2168 priv->x_bits = num_x_electrode; 2169 priv->y_bits = num_y_electrode; 2170 priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2171 priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2172 2173 if (alps_exit_command_mode(psmouse)) 2174 return -1; 2175 2176 return 0; 2177 } 2178 2179 static int alps_hw_init_dolphin_v1(struct psmouse *psmouse) 2180 { 2181 struct ps2dev *ps2dev = &psmouse->ps2dev; 2182 unsigned char param[2]; 2183 2184 /* This is dolphin "v1" as empirically defined by florin9doi */ 2185 param[0] = 0x64; 2186 param[1] = 0x28; 2187 2188 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2189 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2190 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 2191 return -1; 2192 2193 return 0; 2194 } 2195 2196 static int alps_hw_init_v7(struct psmouse *psmouse) 2197 { 2198 struct ps2dev *ps2dev = &psmouse->ps2dev; 2199 int reg_val, ret = -1; 2200 2201 if (alps_enter_command_mode(psmouse) || 2202 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1) 2203 goto error; 2204 2205 if (alps_get_v3_v7_resolution(psmouse, 0xc397)) 2206 goto error; 2207 2208 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 2209 goto error; 2210 2211 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 2212 if (reg_val == -1) 2213 goto error; 2214 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 2215 goto error; 2216 2217 alps_exit_command_mode(psmouse); 2218 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2219 2220 error: 2221 alps_exit_command_mode(psmouse); 2222 return ret; 2223 } 2224 2225 static int alps_set_protocol(struct psmouse *psmouse, 2226 struct alps_data *priv, 2227 const struct alps_protocol_info *protocol) 2228 { 2229 psmouse->private = priv; 2230 2231 setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse); 2232 2233 priv->proto_version = protocol->version; 2234 priv->byte0 = protocol->byte0; 2235 priv->mask0 = protocol->mask0; 2236 priv->flags = protocol->flags; 2237 2238 priv->x_max = 2000; 2239 priv->y_max = 1400; 2240 priv->x_bits = 15; 2241 priv->y_bits = 11; 2242 2243 switch (priv->proto_version) { 2244 case ALPS_PROTO_V1: 2245 case ALPS_PROTO_V2: 2246 priv->hw_init = alps_hw_init_v1_v2; 2247 priv->process_packet = alps_process_packet_v1_v2; 2248 priv->set_abs_params = alps_set_abs_params_st; 2249 priv->x_max = 1023; 2250 priv->y_max = 767; 2251 break; 2252 2253 case ALPS_PROTO_V3: 2254 priv->hw_init = alps_hw_init_v3; 2255 priv->process_packet = alps_process_packet_v3; 2256 priv->set_abs_params = alps_set_abs_params_mt; 2257 priv->decode_fields = alps_decode_pinnacle; 2258 priv->nibble_commands = alps_v3_nibble_commands; 2259 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2260 break; 2261 2262 case ALPS_PROTO_V3_RUSHMORE: 2263 priv->hw_init = alps_hw_init_rushmore_v3; 2264 priv->process_packet = alps_process_packet_v3; 2265 priv->set_abs_params = alps_set_abs_params_mt; 2266 priv->decode_fields = alps_decode_rushmore; 2267 priv->nibble_commands = alps_v3_nibble_commands; 2268 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2269 priv->x_bits = 16; 2270 priv->y_bits = 12; 2271 2272 if (alps_probe_trackstick_v3(psmouse, 2273 ALPS_REG_BASE_RUSHMORE) < 0) 2274 priv->flags &= ~ALPS_DUALPOINT; 2275 2276 break; 2277 2278 case ALPS_PROTO_V4: 2279 priv->hw_init = alps_hw_init_v4; 2280 priv->process_packet = alps_process_packet_v4; 2281 priv->set_abs_params = alps_set_abs_params_mt; 2282 priv->nibble_commands = alps_v4_nibble_commands; 2283 priv->addr_command = PSMOUSE_CMD_DISABLE; 2284 break; 2285 2286 case ALPS_PROTO_V5: 2287 priv->hw_init = alps_hw_init_dolphin_v1; 2288 priv->process_packet = alps_process_touchpad_packet_v3_v5; 2289 priv->decode_fields = alps_decode_dolphin; 2290 priv->set_abs_params = alps_set_abs_params_mt; 2291 priv->nibble_commands = alps_v3_nibble_commands; 2292 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2293 priv->x_bits = 23; 2294 priv->y_bits = 12; 2295 2296 if (alps_dolphin_get_device_area(psmouse, priv)) 2297 return -EIO; 2298 2299 break; 2300 2301 case ALPS_PROTO_V6: 2302 priv->hw_init = alps_hw_init_v6; 2303 priv->process_packet = alps_process_packet_v6; 2304 priv->set_abs_params = alps_set_abs_params_st; 2305 priv->nibble_commands = alps_v6_nibble_commands; 2306 priv->x_max = 2047; 2307 priv->y_max = 1535; 2308 break; 2309 2310 case ALPS_PROTO_V7: 2311 priv->hw_init = alps_hw_init_v7; 2312 priv->process_packet = alps_process_packet_v7; 2313 priv->decode_fields = alps_decode_packet_v7; 2314 priv->set_abs_params = alps_set_abs_params_mt; 2315 priv->nibble_commands = alps_v3_nibble_commands; 2316 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2317 priv->x_max = 0xfff; 2318 priv->y_max = 0x7ff; 2319 2320 if (priv->fw_ver[1] != 0xba) 2321 priv->flags |= ALPS_BUTTONPAD; 2322 2323 break; 2324 } 2325 2326 return 0; 2327 } 2328 2329 static const struct alps_protocol_info *alps_match_table(unsigned char *e7, 2330 unsigned char *ec) 2331 { 2332 const struct alps_model_info *model; 2333 int i; 2334 2335 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) { 2336 model = &alps_model_data[i]; 2337 2338 if (!memcmp(e7, model->signature, sizeof(model->signature)) && 2339 (!model->command_mode_resp || 2340 model->command_mode_resp == ec[2])) { 2341 2342 return &model->protocol_info; 2343 } 2344 } 2345 2346 return NULL; 2347 } 2348 2349 static int alps_identify(struct psmouse *psmouse, struct alps_data *priv) 2350 { 2351 const struct alps_protocol_info *protocol; 2352 unsigned char e6[4], e7[4], ec[4]; 2353 int error; 2354 2355 /* 2356 * First try "E6 report". 2357 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed. 2358 * The bits 0-2 of the first byte will be 1s if some buttons are 2359 * pressed. 2360 */ 2361 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2362 PSMOUSE_CMD_SETSCALE11, e6)) 2363 return -EIO; 2364 2365 if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100)) 2366 return -EINVAL; 2367 2368 /* 2369 * Now get the "E7" and "EC" reports. These will uniquely identify 2370 * most ALPS touchpads. 2371 */ 2372 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2373 PSMOUSE_CMD_SETSCALE21, e7) || 2374 alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2375 PSMOUSE_CMD_RESET_WRAP, ec) || 2376 alps_exit_command_mode(psmouse)) 2377 return -EIO; 2378 2379 protocol = alps_match_table(e7, ec); 2380 if (!protocol) { 2381 if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 && 2382 ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) { 2383 protocol = &alps_v5_protocol_data; 2384 } else if (ec[0] == 0x88 && 2385 ((ec[1] & 0xf0) == 0xb0 || (ec[1] & 0xf0) == 0xc0)) { 2386 protocol = &alps_v7_protocol_data; 2387 } else if (ec[0] == 0x88 && ec[1] == 0x08) { 2388 protocol = &alps_v3_rushmore_data; 2389 } else if (ec[0] == 0x88 && ec[1] == 0x07 && 2390 ec[2] >= 0x90 && ec[2] <= 0x9d) { 2391 protocol = &alps_v3_protocol_data; 2392 } else { 2393 psmouse_dbg(psmouse, 2394 "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec); 2395 return -EINVAL; 2396 } 2397 } 2398 2399 if (priv) { 2400 /* Save the Firmware version */ 2401 memcpy(priv->fw_ver, ec, 3); 2402 error = alps_set_protocol(psmouse, priv, protocol); 2403 if (error) 2404 return error; 2405 } 2406 2407 return 0; 2408 } 2409 2410 static int alps_reconnect(struct psmouse *psmouse) 2411 { 2412 struct alps_data *priv = psmouse->private; 2413 2414 psmouse_reset(psmouse); 2415 2416 if (alps_identify(psmouse, priv) < 0) 2417 return -1; 2418 2419 return priv->hw_init(psmouse); 2420 } 2421 2422 static void alps_disconnect(struct psmouse *psmouse) 2423 { 2424 struct alps_data *priv = psmouse->private; 2425 2426 psmouse_reset(psmouse); 2427 del_timer_sync(&priv->timer); 2428 if (priv->dev2) 2429 input_unregister_device(priv->dev2); 2430 if (!IS_ERR_OR_NULL(priv->dev3)) 2431 input_unregister_device(priv->dev3); 2432 kfree(priv); 2433 } 2434 2435 static void alps_set_abs_params_st(struct alps_data *priv, 2436 struct input_dev *dev1) 2437 { 2438 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0); 2439 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0); 2440 } 2441 2442 static void alps_set_abs_params_mt(struct alps_data *priv, 2443 struct input_dev *dev1) 2444 { 2445 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0); 2446 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0); 2447 2448 input_abs_set_res(dev1, ABS_MT_POSITION_X, priv->x_res); 2449 input_abs_set_res(dev1, ABS_MT_POSITION_Y, priv->y_res); 2450 2451 input_mt_init_slots(dev1, MAX_TOUCHES, INPUT_MT_POINTER | 2452 INPUT_MT_DROP_UNUSED | INPUT_MT_TRACK | INPUT_MT_SEMI_MT); 2453 2454 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit); 2455 set_bit(BTN_TOOL_QUADTAP, dev1->keybit); 2456 2457 /* V7 is real multi-touch */ 2458 if (priv->proto_version == ALPS_PROTO_V7) 2459 clear_bit(INPUT_PROP_SEMI_MT, dev1->propbit); 2460 } 2461 2462 int alps_init(struct psmouse *psmouse) 2463 { 2464 struct alps_data *priv = psmouse->private; 2465 struct input_dev *dev1 = psmouse->dev; 2466 int error; 2467 2468 error = priv->hw_init(psmouse); 2469 if (error) 2470 goto init_fail; 2471 2472 /* 2473 * Undo part of setup done for us by psmouse core since touchpad 2474 * is not a relative device. 2475 */ 2476 __clear_bit(EV_REL, dev1->evbit); 2477 __clear_bit(REL_X, dev1->relbit); 2478 __clear_bit(REL_Y, dev1->relbit); 2479 2480 /* 2481 * Now set up our capabilities. 2482 */ 2483 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY); 2484 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH); 2485 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER); 2486 dev1->keybit[BIT_WORD(BTN_LEFT)] |= 2487 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); 2488 2489 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS); 2490 2491 priv->set_abs_params(priv, dev1); 2492 /* No pressure on V7 */ 2493 if (priv->proto_version != ALPS_PROTO_V7) 2494 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2495 2496 if (priv->flags & ALPS_WHEEL) { 2497 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL); 2498 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL); 2499 } 2500 2501 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 2502 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD); 2503 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK); 2504 } 2505 2506 if (priv->flags & ALPS_FOUR_BUTTONS) { 2507 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0); 2508 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1); 2509 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2); 2510 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3); 2511 } else if (priv->flags & ALPS_BUTTONPAD) { 2512 set_bit(INPUT_PROP_BUTTONPAD, dev1->propbit); 2513 clear_bit(BTN_RIGHT, dev1->keybit); 2514 } else { 2515 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE); 2516 } 2517 2518 if (priv->flags & ALPS_DUALPOINT) { 2519 struct input_dev *dev2; 2520 2521 dev2 = input_allocate_device(); 2522 if (!dev2) { 2523 psmouse_err(psmouse, 2524 "failed to allocate trackstick device\n"); 2525 error = -ENOMEM; 2526 goto init_fail; 2527 } 2528 2529 snprintf(priv->phys2, sizeof(priv->phys2), "%s/input1", 2530 psmouse->ps2dev.serio->phys); 2531 dev2->phys = priv->phys2; 2532 2533 /* 2534 * format of input device name is: "protocol vendor name" 2535 * see function psmouse_switch_protocol() in psmouse-base.c 2536 */ 2537 dev2->name = "AlpsPS/2 ALPS DualPoint Stick"; 2538 2539 dev2->id.bustype = BUS_I8042; 2540 dev2->id.vendor = 0x0002; 2541 dev2->id.product = PSMOUSE_ALPS; 2542 dev2->id.version = priv->proto_version; 2543 dev2->dev.parent = &psmouse->ps2dev.serio->dev; 2544 2545 input_set_capability(dev2, EV_REL, REL_X); 2546 input_set_capability(dev2, EV_REL, REL_Y); 2547 input_set_capability(dev2, EV_KEY, BTN_LEFT); 2548 input_set_capability(dev2, EV_KEY, BTN_RIGHT); 2549 input_set_capability(dev2, EV_KEY, BTN_MIDDLE); 2550 2551 __set_bit(INPUT_PROP_POINTER, dev2->propbit); 2552 __set_bit(INPUT_PROP_POINTING_STICK, dev2->propbit); 2553 2554 error = input_register_device(dev2); 2555 if (error) { 2556 psmouse_err(psmouse, 2557 "failed to register trackstick device: %d\n", 2558 error); 2559 input_free_device(dev2); 2560 goto init_fail; 2561 } 2562 2563 priv->dev2 = dev2; 2564 } 2565 2566 priv->psmouse = psmouse; 2567 2568 INIT_DELAYED_WORK(&priv->dev3_register_work, 2569 alps_register_bare_ps2_mouse); 2570 2571 psmouse->protocol_handler = alps_process_byte; 2572 psmouse->poll = alps_poll; 2573 psmouse->disconnect = alps_disconnect; 2574 psmouse->reconnect = alps_reconnect; 2575 psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6; 2576 2577 /* We are having trouble resyncing ALPS touchpads so disable it for now */ 2578 psmouse->resync_time = 0; 2579 2580 /* Allow 2 invalid packets without resetting device */ 2581 psmouse->resetafter = psmouse->pktsize * 2; 2582 2583 return 0; 2584 2585 init_fail: 2586 psmouse_reset(psmouse); 2587 /* 2588 * Even though we did not allocate psmouse->private we do free 2589 * it here. 2590 */ 2591 kfree(psmouse->private); 2592 psmouse->private = NULL; 2593 return error; 2594 } 2595 2596 int alps_detect(struct psmouse *psmouse, bool set_properties) 2597 { 2598 struct alps_data *priv; 2599 int error; 2600 2601 error = alps_identify(psmouse, NULL); 2602 if (error) 2603 return error; 2604 2605 /* 2606 * Reset the device to make sure it is fully operational: 2607 * on some laptops, like certain Dell Latitudes, we may 2608 * fail to properly detect presence of trackstick if device 2609 * has not been reset. 2610 */ 2611 psmouse_reset(psmouse); 2612 2613 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL); 2614 if (!priv) 2615 return -ENOMEM; 2616 2617 error = alps_identify(psmouse, priv); 2618 if (error) { 2619 kfree(priv); 2620 return error; 2621 } 2622 2623 if (set_properties) { 2624 psmouse->vendor = "ALPS"; 2625 psmouse->name = priv->flags & ALPS_DUALPOINT ? 2626 "DualPoint TouchPad" : "GlidePoint"; 2627 psmouse->model = priv->proto_version; 2628 } else { 2629 /* 2630 * Destroy alps_data structure we allocated earlier since 2631 * this was just a "trial run". Otherwise we'll keep it 2632 * to be used by alps_init() which has to be called if 2633 * we succeed and set_properties is true. 2634 */ 2635 kfree(priv); 2636 psmouse->private = NULL; 2637 } 2638 2639 return 0; 2640 } 2641 2642