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 #include <linux/dmi.h> 24 25 #include "psmouse.h" 26 #include "alps.h" 27 28 /* 29 * Definitions for ALPS version 3 and 4 command mode protocol 30 */ 31 #define ALPS_CMD_NIBBLE_10 0x01f2 32 33 #define ALPS_REG_BASE_RUSHMORE 0xc2c0 34 #define ALPS_REG_BASE_V7 0xc2c0 35 #define ALPS_REG_BASE_PINNACLE 0x0000 36 37 static const struct alps_nibble_commands alps_v3_nibble_commands[] = { 38 { PSMOUSE_CMD_SETPOLL, 0x00 }, /* 0 */ 39 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */ 40 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */ 41 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */ 42 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */ 43 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */ 44 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */ 45 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */ 46 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */ 47 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */ 48 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */ 49 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */ 50 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */ 51 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */ 52 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */ 53 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 54 }; 55 56 static const struct alps_nibble_commands alps_v4_nibble_commands[] = { 57 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */ 58 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */ 59 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */ 60 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */ 61 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */ 62 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */ 63 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */ 64 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */ 65 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */ 66 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */ 67 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */ 68 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */ 69 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */ 70 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */ 71 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */ 72 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 73 }; 74 75 static const struct alps_nibble_commands alps_v6_nibble_commands[] = { 76 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */ 77 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 1 */ 78 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 2 */ 79 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 3 */ 80 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 4 */ 81 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 5 */ 82 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 6 */ 83 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 7 */ 84 { PSMOUSE_CMD_GETID, 0x00 }, /* 8 */ 85 { PSMOUSE_CMD_GETINFO, 0x00 }, /* 9 */ 86 { PSMOUSE_CMD_SETRES, 0x00 }, /* a */ 87 { PSMOUSE_CMD_SETRES, 0x01 }, /* b */ 88 { PSMOUSE_CMD_SETRES, 0x02 }, /* c */ 89 { PSMOUSE_CMD_SETRES, 0x03 }, /* d */ 90 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* e */ 91 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 92 }; 93 94 95 #define ALPS_DUALPOINT 0x02 /* touchpad has trackstick */ 96 #define ALPS_PASS 0x04 /* device has a pass-through port */ 97 98 #define ALPS_WHEEL 0x08 /* hardware wheel present */ 99 #define ALPS_FW_BK_1 0x10 /* front & back buttons present */ 100 #define ALPS_FW_BK_2 0x20 /* front & back buttons present */ 101 #define ALPS_FOUR_BUTTONS 0x40 /* 4 direction button present */ 102 #define ALPS_PS2_INTERLEAVED 0x80 /* 3-byte PS/2 packet interleaved with 103 6-byte ALPS packet */ 104 #define ALPS_STICK_BITS 0x100 /* separate stick button bits */ 105 #define ALPS_BUTTONPAD 0x200 /* device is a clickpad */ 106 107 static const struct alps_model_info alps_model_data[] = { 108 { { 0x32, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Toshiba Salellite Pro M10 */ 109 { { 0x33, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V1, 0x88, 0xf8, 0 } }, /* UMAX-530T */ 110 { { 0x53, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 111 { { 0x53, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 112 { { 0x60, 0x03, 0xc8 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, /* HP ze1115 */ 113 { { 0x63, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 114 { { 0x63, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 115 { { 0x63, 0x02, 0x28 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Fujitsu Siemens S6010 */ 116 { { 0x63, 0x02, 0x3c }, 0x00, { ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL } }, /* Toshiba Satellite S2400-103 */ 117 { { 0x63, 0x02, 0x50 }, 0x00, { ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 } }, /* NEC Versa L320 */ 118 { { 0x63, 0x02, 0x64 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 119 { { 0x63, 0x03, 0xc8 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D800 */ 120 { { 0x73, 0x00, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT } }, /* ThinkPad R61 8918-5QG */ 121 { { 0x73, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 122 { { 0x73, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Ahtec Laptop */ 123 124 /* 125 * XXX This entry is suspicious. First byte has zero lower nibble, 126 * which is what a normal mouse would report. Also, the value 0x0e 127 * isn't valid per PS/2 spec. 128 */ 129 { { 0x20, 0x02, 0x0e }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, 130 131 { { 0x22, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, 132 { { 0x22, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D600 */ 133 /* Dell Latitude E5500, E6400, E6500, Precision M4400 */ 134 { { 0x62, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xcf, 0xcf, 135 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, 136 { { 0x73, 0x00, 0x14 }, 0x00, { ALPS_PROTO_V6, 0xff, 0xff, ALPS_DUALPOINT } }, /* Dell XT2 */ 137 { { 0x73, 0x02, 0x50 }, 0x00, { ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS } }, /* Dell Vostro 1400 */ 138 { { 0x52, 0x01, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff, 139 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, /* Toshiba Tecra A11-11L */ 140 { { 0x73, 0x02, 0x64 }, 0x8a, { ALPS_PROTO_V4, 0x8f, 0x8f, 0 } }, 141 }; 142 143 static const struct alps_protocol_info alps_v3_protocol_data = { 144 ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT 145 }; 146 147 static const struct alps_protocol_info alps_v3_rushmore_data = { 148 ALPS_PROTO_V3_RUSHMORE, 0x8f, 0x8f, ALPS_DUALPOINT 149 }; 150 151 static const struct alps_protocol_info alps_v5_protocol_data = { 152 ALPS_PROTO_V5, 0xc8, 0xd8, 0 153 }; 154 155 static const struct alps_protocol_info alps_v7_protocol_data = { 156 ALPS_PROTO_V7, 0x48, 0x48, ALPS_DUALPOINT 157 }; 158 159 static const struct alps_protocol_info alps_v8_protocol_data = { 160 ALPS_PROTO_V8, 0x18, 0x18, 0 161 }; 162 163 /* 164 * Some v2 models report the stick buttons in separate bits 165 */ 166 static const struct dmi_system_id alps_dmi_has_separate_stick_buttons[] = { 167 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 168 { 169 /* Extrapolated from other entries */ 170 .matches = { 171 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 172 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D420"), 173 }, 174 }, 175 { 176 /* Reported-by: Hans de Bruin <jmdebruin@xmsnet.nl> */ 177 .matches = { 178 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 179 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D430"), 180 }, 181 }, 182 { 183 /* Reported-by: Hans de Goede <hdegoede@redhat.com> */ 184 .matches = { 185 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 186 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D620"), 187 }, 188 }, 189 { 190 /* Extrapolated from other entries */ 191 .matches = { 192 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 193 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D630"), 194 }, 195 }, 196 #endif 197 { } 198 }; 199 200 static void alps_set_abs_params_st(struct alps_data *priv, 201 struct input_dev *dev1); 202 static void alps_set_abs_params_semi_mt(struct alps_data *priv, 203 struct input_dev *dev1); 204 static void alps_set_abs_params_v7(struct alps_data *priv, 205 struct input_dev *dev1); 206 static void alps_set_abs_params_ss4_v2(struct alps_data *priv, 207 struct input_dev *dev1); 208 209 /* Packet formats are described in Documentation/input/alps.txt */ 210 211 static bool alps_is_valid_first_byte(struct alps_data *priv, 212 unsigned char data) 213 { 214 return (data & priv->mask0) == priv->byte0; 215 } 216 217 static void alps_report_buttons(struct input_dev *dev1, struct input_dev *dev2, 218 int left, int right, int middle) 219 { 220 struct input_dev *dev; 221 222 /* 223 * If shared button has already been reported on the 224 * other device (dev2) then this event should be also 225 * sent through that device. 226 */ 227 dev = (dev2 && test_bit(BTN_LEFT, dev2->key)) ? dev2 : dev1; 228 input_report_key(dev, BTN_LEFT, left); 229 230 dev = (dev2 && test_bit(BTN_RIGHT, dev2->key)) ? dev2 : dev1; 231 input_report_key(dev, BTN_RIGHT, right); 232 233 dev = (dev2 && test_bit(BTN_MIDDLE, dev2->key)) ? dev2 : dev1; 234 input_report_key(dev, BTN_MIDDLE, middle); 235 236 /* 237 * Sync the _other_ device now, we'll do the first 238 * device later once we report the rest of the events. 239 */ 240 if (dev2) 241 input_sync(dev2); 242 } 243 244 static void alps_process_packet_v1_v2(struct psmouse *psmouse) 245 { 246 struct alps_data *priv = psmouse->private; 247 unsigned char *packet = psmouse->packet; 248 struct input_dev *dev = psmouse->dev; 249 struct input_dev *dev2 = priv->dev2; 250 int x, y, z, ges, fin, left, right, middle; 251 int back = 0, forward = 0; 252 253 if (priv->proto_version == ALPS_PROTO_V1) { 254 left = packet[2] & 0x10; 255 right = packet[2] & 0x08; 256 middle = 0; 257 x = packet[1] | ((packet[0] & 0x07) << 7); 258 y = packet[4] | ((packet[3] & 0x07) << 7); 259 z = packet[5]; 260 } else { 261 left = packet[3] & 1; 262 right = packet[3] & 2; 263 middle = packet[3] & 4; 264 x = packet[1] | ((packet[2] & 0x78) << (7 - 3)); 265 y = packet[4] | ((packet[3] & 0x70) << (7 - 4)); 266 z = packet[5]; 267 } 268 269 if (priv->flags & ALPS_FW_BK_1) { 270 back = packet[0] & 0x10; 271 forward = packet[2] & 4; 272 } 273 274 if (priv->flags & ALPS_FW_BK_2) { 275 back = packet[3] & 4; 276 forward = packet[2] & 4; 277 if ((middle = forward && back)) 278 forward = back = 0; 279 } 280 281 ges = packet[2] & 1; 282 fin = packet[2] & 2; 283 284 if ((priv->flags & ALPS_DUALPOINT) && z == 127) { 285 input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x)); 286 input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y)); 287 288 alps_report_buttons(dev2, dev, left, right, middle); 289 290 input_sync(dev2); 291 return; 292 } 293 294 /* Some models have separate stick button bits */ 295 if (priv->flags & ALPS_STICK_BITS) { 296 left |= packet[0] & 1; 297 right |= packet[0] & 2; 298 middle |= packet[0] & 4; 299 } 300 301 alps_report_buttons(dev, dev2, left, right, middle); 302 303 /* Convert hardware tap to a reasonable Z value */ 304 if (ges && !fin) 305 z = 40; 306 307 /* 308 * A "tap and drag" operation is reported by the hardware as a transition 309 * from (!fin && ges) to (fin && ges). This should be translated to the 310 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually. 311 */ 312 if (ges && fin && !priv->prev_fin) { 313 input_report_abs(dev, ABS_X, x); 314 input_report_abs(dev, ABS_Y, y); 315 input_report_abs(dev, ABS_PRESSURE, 0); 316 input_report_key(dev, BTN_TOOL_FINGER, 0); 317 input_sync(dev); 318 } 319 priv->prev_fin = fin; 320 321 if (z > 30) 322 input_report_key(dev, BTN_TOUCH, 1); 323 if (z < 25) 324 input_report_key(dev, BTN_TOUCH, 0); 325 326 if (z > 0) { 327 input_report_abs(dev, ABS_X, x); 328 input_report_abs(dev, ABS_Y, y); 329 } 330 331 input_report_abs(dev, ABS_PRESSURE, z); 332 input_report_key(dev, BTN_TOOL_FINGER, z > 0); 333 334 if (priv->flags & ALPS_WHEEL) 335 input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07)); 336 337 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 338 input_report_key(dev, BTN_FORWARD, forward); 339 input_report_key(dev, BTN_BACK, back); 340 } 341 342 if (priv->flags & ALPS_FOUR_BUTTONS) { 343 input_report_key(dev, BTN_0, packet[2] & 4); 344 input_report_key(dev, BTN_1, packet[0] & 0x10); 345 input_report_key(dev, BTN_2, packet[3] & 4); 346 input_report_key(dev, BTN_3, packet[0] & 0x20); 347 } 348 349 input_sync(dev); 350 } 351 352 static void alps_get_bitmap_points(unsigned int map, 353 struct alps_bitmap_point *low, 354 struct alps_bitmap_point *high, 355 int *fingers) 356 { 357 struct alps_bitmap_point *point; 358 int i, bit, prev_bit = 0; 359 360 point = low; 361 for (i = 0; map != 0; i++, map >>= 1) { 362 bit = map & 1; 363 if (bit) { 364 if (!prev_bit) { 365 point->start_bit = i; 366 point->num_bits = 0; 367 (*fingers)++; 368 } 369 point->num_bits++; 370 } else { 371 if (prev_bit) 372 point = high; 373 } 374 prev_bit = bit; 375 } 376 } 377 378 /* 379 * Process bitmap data from semi-mt protocols. Returns the number of 380 * fingers detected. A return value of 0 means at least one of the 381 * bitmaps was empty. 382 * 383 * The bitmaps don't have enough data to track fingers, so this function 384 * only generates points representing a bounding box of all contacts. 385 * These points are returned in fields->mt when the return value 386 * is greater than 0. 387 */ 388 static int alps_process_bitmap(struct alps_data *priv, 389 struct alps_fields *fields) 390 { 391 int i, fingers_x = 0, fingers_y = 0, fingers, closest; 392 struct alps_bitmap_point x_low = {0,}, x_high = {0,}; 393 struct alps_bitmap_point y_low = {0,}, y_high = {0,}; 394 struct input_mt_pos corner[4]; 395 396 if (!fields->x_map || !fields->y_map) 397 return 0; 398 399 alps_get_bitmap_points(fields->x_map, &x_low, &x_high, &fingers_x); 400 alps_get_bitmap_points(fields->y_map, &y_low, &y_high, &fingers_y); 401 402 /* 403 * Fingers can overlap, so we use the maximum count of fingers 404 * on either axis as the finger count. 405 */ 406 fingers = max(fingers_x, fingers_y); 407 408 /* 409 * If an axis reports only a single contact, we have overlapping or 410 * adjacent fingers. Divide the single contact between the two points. 411 */ 412 if (fingers_x == 1) { 413 i = (x_low.num_bits - 1) / 2; 414 x_low.num_bits = x_low.num_bits - i; 415 x_high.start_bit = x_low.start_bit + i; 416 x_high.num_bits = max(i, 1); 417 } 418 if (fingers_y == 1) { 419 i = (y_low.num_bits - 1) / 2; 420 y_low.num_bits = y_low.num_bits - i; 421 y_high.start_bit = y_low.start_bit + i; 422 y_high.num_bits = max(i, 1); 423 } 424 425 /* top-left corner */ 426 corner[0].x = 427 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) / 428 (2 * (priv->x_bits - 1)); 429 corner[0].y = 430 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) / 431 (2 * (priv->y_bits - 1)); 432 433 /* top-right corner */ 434 corner[1].x = 435 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) / 436 (2 * (priv->x_bits - 1)); 437 corner[1].y = 438 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) / 439 (2 * (priv->y_bits - 1)); 440 441 /* bottom-right corner */ 442 corner[2].x = 443 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) / 444 (2 * (priv->x_bits - 1)); 445 corner[2].y = 446 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) / 447 (2 * (priv->y_bits - 1)); 448 449 /* bottom-left corner */ 450 corner[3].x = 451 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) / 452 (2 * (priv->x_bits - 1)); 453 corner[3].y = 454 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) / 455 (2 * (priv->y_bits - 1)); 456 457 /* x-bitmap order is reversed on v5 touchpads */ 458 if (priv->proto_version == ALPS_PROTO_V5) { 459 for (i = 0; i < 4; i++) 460 corner[i].x = priv->x_max - corner[i].x; 461 } 462 463 /* y-bitmap order is reversed on v3 and v4 touchpads */ 464 if (priv->proto_version == ALPS_PROTO_V3 || 465 priv->proto_version == ALPS_PROTO_V4) { 466 for (i = 0; i < 4; i++) 467 corner[i].y = priv->y_max - corner[i].y; 468 } 469 470 /* 471 * We only select a corner for the second touch once per 2 finger 472 * touch sequence to avoid the chosen corner (and thus the coordinates) 473 * jumping around when the first touch is in the middle. 474 */ 475 if (priv->second_touch == -1) { 476 /* Find corner closest to our st coordinates */ 477 closest = 0x7fffffff; 478 for (i = 0; i < 4; i++) { 479 int dx = fields->st.x - corner[i].x; 480 int dy = fields->st.y - corner[i].y; 481 int distance = dx * dx + dy * dy; 482 483 if (distance < closest) { 484 priv->second_touch = i; 485 closest = distance; 486 } 487 } 488 /* And select the opposite corner to use for the 2nd touch */ 489 priv->second_touch = (priv->second_touch + 2) % 4; 490 } 491 492 fields->mt[0] = fields->st; 493 fields->mt[1] = corner[priv->second_touch]; 494 495 return fingers; 496 } 497 498 static void alps_set_slot(struct input_dev *dev, int slot, int x, int y) 499 { 500 input_mt_slot(dev, slot); 501 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); 502 input_report_abs(dev, ABS_MT_POSITION_X, x); 503 input_report_abs(dev, ABS_MT_POSITION_Y, y); 504 } 505 506 static void alps_report_mt_data(struct psmouse *psmouse, int n) 507 { 508 struct alps_data *priv = psmouse->private; 509 struct input_dev *dev = psmouse->dev; 510 struct alps_fields *f = &priv->f; 511 int i, slot[MAX_TOUCHES]; 512 513 input_mt_assign_slots(dev, slot, f->mt, n, 0); 514 for (i = 0; i < n; i++) 515 alps_set_slot(dev, slot[i], f->mt[i].x, f->mt[i].y); 516 517 input_mt_sync_frame(dev); 518 } 519 520 static void alps_report_semi_mt_data(struct psmouse *psmouse, int fingers) 521 { 522 struct alps_data *priv = psmouse->private; 523 struct input_dev *dev = psmouse->dev; 524 struct alps_fields *f = &priv->f; 525 526 /* Use st data when we don't have mt data */ 527 if (fingers < 2) { 528 f->mt[0].x = f->st.x; 529 f->mt[0].y = f->st.y; 530 fingers = f->pressure > 0 ? 1 : 0; 531 priv->second_touch = -1; 532 } 533 534 if (fingers >= 1) 535 alps_set_slot(dev, 0, f->mt[0].x, f->mt[0].y); 536 if (fingers >= 2) 537 alps_set_slot(dev, 1, f->mt[1].x, f->mt[1].y); 538 input_mt_sync_frame(dev); 539 540 input_mt_report_finger_count(dev, fingers); 541 542 input_report_key(dev, BTN_LEFT, f->left); 543 input_report_key(dev, BTN_RIGHT, f->right); 544 input_report_key(dev, BTN_MIDDLE, f->middle); 545 546 input_report_abs(dev, ABS_PRESSURE, f->pressure); 547 548 input_sync(dev); 549 } 550 551 static void alps_process_trackstick_packet_v3(struct psmouse *psmouse) 552 { 553 struct alps_data *priv = psmouse->private; 554 unsigned char *packet = psmouse->packet; 555 struct input_dev *dev = priv->dev2; 556 int x, y, z, left, right, middle; 557 558 /* It should be a DualPoint when received trackstick packet */ 559 if (!(priv->flags & ALPS_DUALPOINT)) { 560 psmouse_warn(psmouse, 561 "Rejected trackstick packet from non DualPoint device"); 562 return; 563 } 564 565 /* Sanity check packet */ 566 if (!(packet[0] & 0x40)) { 567 psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n"); 568 return; 569 } 570 571 /* 572 * There's a special packet that seems to indicate the end 573 * of a stream of trackstick data. Filter these out. 574 */ 575 if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f) 576 return; 577 578 x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f)); 579 y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f)); 580 z = (packet[4] & 0x7c) >> 2; 581 582 /* 583 * The x and y values tend to be quite large, and when used 584 * alone the trackstick is difficult to use. Scale them down 585 * to compensate. 586 */ 587 x /= 8; 588 y /= 8; 589 590 input_report_rel(dev, REL_X, x); 591 input_report_rel(dev, REL_Y, -y); 592 593 /* 594 * Most ALPS models report the trackstick buttons in the touchpad 595 * packets, but a few report them here. No reliable way has been 596 * found to differentiate between the models upfront, so we enable 597 * the quirk in response to seeing a button press in the trackstick 598 * packet. 599 */ 600 left = packet[3] & 0x01; 601 right = packet[3] & 0x02; 602 middle = packet[3] & 0x04; 603 604 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) && 605 (left || right || middle)) 606 priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS; 607 608 if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) { 609 input_report_key(dev, BTN_LEFT, left); 610 input_report_key(dev, BTN_RIGHT, right); 611 input_report_key(dev, BTN_MIDDLE, middle); 612 } 613 614 input_sync(dev); 615 return; 616 } 617 618 static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p) 619 { 620 f->left = !!(p[3] & 0x01); 621 f->right = !!(p[3] & 0x02); 622 f->middle = !!(p[3] & 0x04); 623 624 f->ts_left = !!(p[3] & 0x10); 625 f->ts_right = !!(p[3] & 0x20); 626 f->ts_middle = !!(p[3] & 0x40); 627 } 628 629 static int alps_decode_pinnacle(struct alps_fields *f, unsigned char *p, 630 struct psmouse *psmouse) 631 { 632 f->first_mp = !!(p[4] & 0x40); 633 f->is_mp = !!(p[0] & 0x40); 634 635 if (f->is_mp) { 636 f->fingers = (p[5] & 0x3) + 1; 637 f->x_map = ((p[4] & 0x7e) << 8) | 638 ((p[1] & 0x7f) << 2) | 639 ((p[0] & 0x30) >> 4); 640 f->y_map = ((p[3] & 0x70) << 4) | 641 ((p[2] & 0x7f) << 1) | 642 (p[4] & 0x01); 643 } else { 644 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | 645 ((p[0] & 0x30) >> 4); 646 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); 647 f->pressure = p[5] & 0x7f; 648 649 alps_decode_buttons_v3(f, p); 650 } 651 652 return 0; 653 } 654 655 static int alps_decode_rushmore(struct alps_fields *f, unsigned char *p, 656 struct psmouse *psmouse) 657 { 658 f->first_mp = !!(p[4] & 0x40); 659 f->is_mp = !!(p[5] & 0x40); 660 661 if (f->is_mp) { 662 f->fingers = max((p[5] & 0x3), ((p[5] >> 2) & 0x3)) + 1; 663 f->x_map = ((p[5] & 0x10) << 11) | 664 ((p[4] & 0x7e) << 8) | 665 ((p[1] & 0x7f) << 2) | 666 ((p[0] & 0x30) >> 4); 667 f->y_map = ((p[5] & 0x20) << 6) | 668 ((p[3] & 0x70) << 4) | 669 ((p[2] & 0x7f) << 1) | 670 (p[4] & 0x01); 671 } else { 672 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | 673 ((p[0] & 0x30) >> 4); 674 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); 675 f->pressure = p[5] & 0x7f; 676 677 alps_decode_buttons_v3(f, p); 678 } 679 680 return 0; 681 } 682 683 static int alps_decode_dolphin(struct alps_fields *f, unsigned char *p, 684 struct psmouse *psmouse) 685 { 686 u64 palm_data = 0; 687 struct alps_data *priv = psmouse->private; 688 689 f->first_mp = !!(p[0] & 0x02); 690 f->is_mp = !!(p[0] & 0x20); 691 692 if (!f->is_mp) { 693 f->st.x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7)); 694 f->st.y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3)); 695 f->pressure = (p[0] & 4) ? 0 : p[5] & 0x7f; 696 alps_decode_buttons_v3(f, p); 697 } else { 698 f->fingers = ((p[0] & 0x6) >> 1 | 699 (p[0] & 0x10) >> 2); 700 701 palm_data = (p[1] & 0x7f) | 702 ((p[2] & 0x7f) << 7) | 703 ((p[4] & 0x7f) << 14) | 704 ((p[5] & 0x7f) << 21) | 705 ((p[3] & 0x07) << 28) | 706 (((u64)p[3] & 0x70) << 27) | 707 (((u64)p[0] & 0x01) << 34); 708 709 /* Y-profile is stored in P(0) to p(n-1), n = y_bits; */ 710 f->y_map = palm_data & (BIT(priv->y_bits) - 1); 711 712 /* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */ 713 f->x_map = (palm_data >> priv->y_bits) & 714 (BIT(priv->x_bits) - 1); 715 } 716 717 return 0; 718 } 719 720 static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse) 721 { 722 struct alps_data *priv = psmouse->private; 723 unsigned char *packet = psmouse->packet; 724 struct input_dev *dev2 = priv->dev2; 725 struct alps_fields *f = &priv->f; 726 int fingers = 0; 727 728 memset(f, 0, sizeof(*f)); 729 730 priv->decode_fields(f, packet, psmouse); 731 732 /* 733 * There's no single feature of touchpad position and bitmap packets 734 * that can be used to distinguish between them. We rely on the fact 735 * that a bitmap packet should always follow a position packet with 736 * bit 6 of packet[4] set. 737 */ 738 if (priv->multi_packet) { 739 /* 740 * Sometimes a position packet will indicate a multi-packet 741 * sequence, but then what follows is another position 742 * packet. Check for this, and when it happens process the 743 * position packet as usual. 744 */ 745 if (f->is_mp) { 746 fingers = f->fingers; 747 /* 748 * Bitmap processing uses position packet's coordinate 749 * data, so we need to do decode it first. 750 */ 751 priv->decode_fields(f, priv->multi_data, psmouse); 752 if (alps_process_bitmap(priv, f) == 0) 753 fingers = 0; /* Use st data */ 754 } else { 755 priv->multi_packet = 0; 756 } 757 } 758 759 /* 760 * Bit 6 of byte 0 is not usually set in position packets. The only 761 * times it seems to be set is in situations where the data is 762 * suspect anyway, e.g. a palm resting flat on the touchpad. Given 763 * this combined with the fact that this bit is useful for filtering 764 * out misidentified bitmap packets, we reject anything with this 765 * bit set. 766 */ 767 if (f->is_mp) 768 return; 769 770 if (!priv->multi_packet && f->first_mp) { 771 priv->multi_packet = 1; 772 memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); 773 return; 774 } 775 776 priv->multi_packet = 0; 777 778 /* 779 * Sometimes the hardware sends a single packet with z = 0 780 * in the middle of a stream. Real releases generate packets 781 * with x, y, and z all zero, so these seem to be flukes. 782 * Ignore them. 783 */ 784 if (f->st.x && f->st.y && !f->pressure) 785 return; 786 787 alps_report_semi_mt_data(psmouse, fingers); 788 789 if ((priv->flags & ALPS_DUALPOINT) && 790 !(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) { 791 input_report_key(dev2, BTN_LEFT, f->ts_left); 792 input_report_key(dev2, BTN_RIGHT, f->ts_right); 793 input_report_key(dev2, BTN_MIDDLE, f->ts_middle); 794 input_sync(dev2); 795 } 796 } 797 798 static void alps_process_packet_v3(struct psmouse *psmouse) 799 { 800 unsigned char *packet = psmouse->packet; 801 802 /* 803 * v3 protocol packets come in three types, two representing 804 * touchpad data and one representing trackstick data. 805 * Trackstick packets seem to be distinguished by always 806 * having 0x3f in the last byte. This value has never been 807 * observed in the last byte of either of the other types 808 * of packets. 809 */ 810 if (packet[5] == 0x3f) { 811 alps_process_trackstick_packet_v3(psmouse); 812 return; 813 } 814 815 alps_process_touchpad_packet_v3_v5(psmouse); 816 } 817 818 static void alps_process_packet_v6(struct psmouse *psmouse) 819 { 820 struct alps_data *priv = psmouse->private; 821 unsigned char *packet = psmouse->packet; 822 struct input_dev *dev = psmouse->dev; 823 struct input_dev *dev2 = priv->dev2; 824 int x, y, z, left, right, middle; 825 826 /* 827 * We can use Byte5 to distinguish if the packet is from Touchpad 828 * or Trackpoint. 829 * Touchpad: 0 - 0x7E 830 * Trackpoint: 0x7F 831 */ 832 if (packet[5] == 0x7F) { 833 /* It should be a DualPoint when received Trackpoint packet */ 834 if (!(priv->flags & ALPS_DUALPOINT)) { 835 psmouse_warn(psmouse, 836 "Rejected trackstick packet from non DualPoint device"); 837 return; 838 } 839 840 /* Trackpoint packet */ 841 x = packet[1] | ((packet[3] & 0x20) << 2); 842 y = packet[2] | ((packet[3] & 0x40) << 1); 843 z = packet[4]; 844 left = packet[3] & 0x01; 845 right = packet[3] & 0x02; 846 middle = packet[3] & 0x04; 847 848 /* To prevent the cursor jump when finger lifted */ 849 if (x == 0x7F && y == 0x7F && z == 0x7F) 850 x = y = z = 0; 851 852 /* Divide 4 since trackpoint's speed is too fast */ 853 input_report_rel(dev2, REL_X, (char)x / 4); 854 input_report_rel(dev2, REL_Y, -((char)y / 4)); 855 856 input_report_key(dev2, BTN_LEFT, left); 857 input_report_key(dev2, BTN_RIGHT, right); 858 input_report_key(dev2, BTN_MIDDLE, middle); 859 860 input_sync(dev2); 861 return; 862 } 863 864 /* Touchpad packet */ 865 x = packet[1] | ((packet[3] & 0x78) << 4); 866 y = packet[2] | ((packet[4] & 0x78) << 4); 867 z = packet[5]; 868 left = packet[3] & 0x01; 869 right = packet[3] & 0x02; 870 871 if (z > 30) 872 input_report_key(dev, BTN_TOUCH, 1); 873 if (z < 25) 874 input_report_key(dev, BTN_TOUCH, 0); 875 876 if (z > 0) { 877 input_report_abs(dev, ABS_X, x); 878 input_report_abs(dev, ABS_Y, y); 879 } 880 881 input_report_abs(dev, ABS_PRESSURE, z); 882 input_report_key(dev, BTN_TOOL_FINGER, z > 0); 883 884 /* v6 touchpad does not have middle button */ 885 input_report_key(dev, BTN_LEFT, left); 886 input_report_key(dev, BTN_RIGHT, right); 887 888 input_sync(dev); 889 } 890 891 static void alps_process_packet_v4(struct psmouse *psmouse) 892 { 893 struct alps_data *priv = psmouse->private; 894 unsigned char *packet = psmouse->packet; 895 struct alps_fields *f = &priv->f; 896 int offset; 897 898 /* 899 * v4 has a 6-byte encoding for bitmap data, but this data is 900 * broken up between 3 normal packets. Use priv->multi_packet to 901 * track our position in the bitmap packet. 902 */ 903 if (packet[6] & 0x40) { 904 /* sync, reset position */ 905 priv->multi_packet = 0; 906 } 907 908 if (WARN_ON_ONCE(priv->multi_packet > 2)) 909 return; 910 911 offset = 2 * priv->multi_packet; 912 priv->multi_data[offset] = packet[6]; 913 priv->multi_data[offset + 1] = packet[7]; 914 915 f->left = !!(packet[4] & 0x01); 916 f->right = !!(packet[4] & 0x02); 917 918 f->st.x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) | 919 ((packet[0] & 0x30) >> 4); 920 f->st.y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f); 921 f->pressure = packet[5] & 0x7f; 922 923 if (++priv->multi_packet > 2) { 924 priv->multi_packet = 0; 925 926 f->x_map = ((priv->multi_data[2] & 0x1f) << 10) | 927 ((priv->multi_data[3] & 0x60) << 3) | 928 ((priv->multi_data[0] & 0x3f) << 2) | 929 ((priv->multi_data[1] & 0x60) >> 5); 930 f->y_map = ((priv->multi_data[5] & 0x01) << 10) | 931 ((priv->multi_data[3] & 0x1f) << 5) | 932 (priv->multi_data[1] & 0x1f); 933 934 f->fingers = alps_process_bitmap(priv, f); 935 } 936 937 alps_report_semi_mt_data(psmouse, f->fingers); 938 } 939 940 static bool alps_is_valid_package_v7(struct psmouse *psmouse) 941 { 942 switch (psmouse->pktcnt) { 943 case 3: 944 return (psmouse->packet[2] & 0x40) == 0x40; 945 case 4: 946 return (psmouse->packet[3] & 0x48) == 0x48; 947 case 6: 948 return (psmouse->packet[5] & 0x40) == 0x00; 949 } 950 return true; 951 } 952 953 static unsigned char alps_get_packet_id_v7(char *byte) 954 { 955 unsigned char packet_id; 956 957 if (byte[4] & 0x40) 958 packet_id = V7_PACKET_ID_TWO; 959 else if (byte[4] & 0x01) 960 packet_id = V7_PACKET_ID_MULTI; 961 else if ((byte[0] & 0x10) && !(byte[4] & 0x43)) 962 packet_id = V7_PACKET_ID_NEW; 963 else if (byte[1] == 0x00 && byte[4] == 0x00) 964 packet_id = V7_PACKET_ID_IDLE; 965 else 966 packet_id = V7_PACKET_ID_UNKNOWN; 967 968 return packet_id; 969 } 970 971 static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt, 972 unsigned char *pkt, 973 unsigned char pkt_id) 974 { 975 mt[0].x = ((pkt[2] & 0x80) << 4); 976 mt[0].x |= ((pkt[2] & 0x3F) << 5); 977 mt[0].x |= ((pkt[3] & 0x30) >> 1); 978 mt[0].x |= (pkt[3] & 0x07); 979 mt[0].y = (pkt[1] << 3) | (pkt[0] & 0x07); 980 981 mt[1].x = ((pkt[3] & 0x80) << 4); 982 mt[1].x |= ((pkt[4] & 0x80) << 3); 983 mt[1].x |= ((pkt[4] & 0x3F) << 4); 984 mt[1].y = ((pkt[5] & 0x80) << 3); 985 mt[1].y |= ((pkt[5] & 0x3F) << 4); 986 987 switch (pkt_id) { 988 case V7_PACKET_ID_TWO: 989 mt[1].x &= ~0x000F; 990 mt[1].y |= 0x000F; 991 /* Detect false-postive touches where x & y report max value */ 992 if (mt[1].y == 0x7ff && mt[1].x == 0xff0) { 993 mt[1].x = 0; 994 /* y gets set to 0 at the end of this function */ 995 } 996 break; 997 998 case V7_PACKET_ID_MULTI: 999 mt[1].x &= ~0x003F; 1000 mt[1].y &= ~0x0020; 1001 mt[1].y |= ((pkt[4] & 0x02) << 4); 1002 mt[1].y |= 0x001F; 1003 break; 1004 1005 case V7_PACKET_ID_NEW: 1006 mt[1].x &= ~0x003F; 1007 mt[1].x |= (pkt[0] & 0x20); 1008 mt[1].y |= 0x000F; 1009 break; 1010 } 1011 1012 mt[0].y = 0x7FF - mt[0].y; 1013 mt[1].y = 0x7FF - mt[1].y; 1014 } 1015 1016 static int alps_get_mt_count(struct input_mt_pos *mt) 1017 { 1018 int i, fingers = 0; 1019 1020 for (i = 0; i < MAX_TOUCHES; i++) { 1021 if (mt[i].x != 0 || mt[i].y != 0) 1022 fingers++; 1023 } 1024 1025 return fingers; 1026 } 1027 1028 static int alps_decode_packet_v7(struct alps_fields *f, 1029 unsigned char *p, 1030 struct psmouse *psmouse) 1031 { 1032 struct alps_data *priv = psmouse->private; 1033 unsigned char pkt_id; 1034 1035 pkt_id = alps_get_packet_id_v7(p); 1036 if (pkt_id == V7_PACKET_ID_IDLE) 1037 return 0; 1038 if (pkt_id == V7_PACKET_ID_UNKNOWN) 1039 return -1; 1040 /* 1041 * NEW packets are send to indicate a discontinuity in the finger 1042 * coordinate reporting. Specifically a finger may have moved from 1043 * slot 0 to 1 or vice versa. INPUT_MT_TRACK takes care of this for 1044 * us. 1045 * 1046 * NEW packets have 3 problems: 1047 * 1) They do not contain middle / right button info (on non clickpads) 1048 * this can be worked around by preserving the old button state 1049 * 2) They do not contain an accurate fingercount, and they are 1050 * typically send when the number of fingers changes. We cannot use 1051 * the old finger count as that may mismatch with the amount of 1052 * touch coordinates we've available in the NEW packet 1053 * 3) Their x data for the second touch is inaccurate leading to 1054 * a possible jump of the x coordinate by 16 units when the first 1055 * non NEW packet comes in 1056 * Since problems 2 & 3 cannot be worked around, just ignore them. 1057 */ 1058 if (pkt_id == V7_PACKET_ID_NEW) 1059 return 1; 1060 1061 alps_get_finger_coordinate_v7(f->mt, p, pkt_id); 1062 1063 if (pkt_id == V7_PACKET_ID_TWO) 1064 f->fingers = alps_get_mt_count(f->mt); 1065 else /* pkt_id == V7_PACKET_ID_MULTI */ 1066 f->fingers = 3 + (p[5] & 0x03); 1067 1068 f->left = (p[0] & 0x80) >> 7; 1069 if (priv->flags & ALPS_BUTTONPAD) { 1070 if (p[0] & 0x20) 1071 f->fingers++; 1072 if (p[0] & 0x10) 1073 f->fingers++; 1074 } else { 1075 f->right = (p[0] & 0x20) >> 5; 1076 f->middle = (p[0] & 0x10) >> 4; 1077 } 1078 1079 /* Sometimes a single touch is reported in mt[1] rather then mt[0] */ 1080 if (f->fingers == 1 && f->mt[0].x == 0 && f->mt[0].y == 0) { 1081 f->mt[0].x = f->mt[1].x; 1082 f->mt[0].y = f->mt[1].y; 1083 f->mt[1].x = 0; 1084 f->mt[1].y = 0; 1085 } 1086 1087 return 0; 1088 } 1089 1090 static void alps_process_trackstick_packet_v7(struct psmouse *psmouse) 1091 { 1092 struct alps_data *priv = psmouse->private; 1093 unsigned char *packet = psmouse->packet; 1094 struct input_dev *dev2 = priv->dev2; 1095 int x, y, z, left, right, middle; 1096 1097 /* It should be a DualPoint when received trackstick packet */ 1098 if (!(priv->flags & ALPS_DUALPOINT)) { 1099 psmouse_warn(psmouse, 1100 "Rejected trackstick packet from non DualPoint device"); 1101 return; 1102 } 1103 1104 x = ((packet[2] & 0xbf)) | ((packet[3] & 0x10) << 2); 1105 y = (packet[3] & 0x07) | (packet[4] & 0xb8) | 1106 ((packet[3] & 0x20) << 1); 1107 z = (packet[5] & 0x3f) | ((packet[3] & 0x80) >> 1); 1108 1109 left = (packet[1] & 0x01); 1110 right = (packet[1] & 0x02) >> 1; 1111 middle = (packet[1] & 0x04) >> 2; 1112 1113 input_report_rel(dev2, REL_X, (char)x); 1114 input_report_rel(dev2, REL_Y, -((char)y)); 1115 1116 input_report_key(dev2, BTN_LEFT, left); 1117 input_report_key(dev2, BTN_RIGHT, right); 1118 input_report_key(dev2, BTN_MIDDLE, middle); 1119 1120 input_sync(dev2); 1121 } 1122 1123 static void alps_process_touchpad_packet_v7(struct psmouse *psmouse) 1124 { 1125 struct alps_data *priv = psmouse->private; 1126 struct input_dev *dev = psmouse->dev; 1127 struct alps_fields *f = &priv->f; 1128 1129 memset(f, 0, sizeof(*f)); 1130 1131 if (priv->decode_fields(f, psmouse->packet, psmouse)) 1132 return; 1133 1134 alps_report_mt_data(psmouse, alps_get_mt_count(f->mt)); 1135 1136 input_mt_report_finger_count(dev, f->fingers); 1137 1138 input_report_key(dev, BTN_LEFT, f->left); 1139 input_report_key(dev, BTN_RIGHT, f->right); 1140 input_report_key(dev, BTN_MIDDLE, f->middle); 1141 1142 input_sync(dev); 1143 } 1144 1145 static void alps_process_packet_v7(struct psmouse *psmouse) 1146 { 1147 unsigned char *packet = psmouse->packet; 1148 1149 if (packet[0] == 0x48 && (packet[4] & 0x47) == 0x06) 1150 alps_process_trackstick_packet_v7(psmouse); 1151 else 1152 alps_process_touchpad_packet_v7(psmouse); 1153 } 1154 1155 static unsigned char alps_get_pkt_id_ss4_v2(unsigned char *byte) 1156 { 1157 unsigned char pkt_id = SS4_PACKET_ID_IDLE; 1158 1159 if (byte[0] == 0x18 && byte[1] == 0x10 && byte[2] == 0x00 && 1160 (byte[3] & 0x88) == 0x08 && byte[4] == 0x10 && byte[5] == 0x00) { 1161 pkt_id = SS4_PACKET_ID_IDLE; 1162 } else if (!(byte[3] & 0x10)) { 1163 pkt_id = SS4_PACKET_ID_ONE; 1164 } else if (!(byte[3] & 0x20)) { 1165 pkt_id = SS4_PACKET_ID_TWO; 1166 } else { 1167 pkt_id = SS4_PACKET_ID_MULTI; 1168 } 1169 1170 return pkt_id; 1171 } 1172 1173 static int alps_decode_ss4_v2(struct alps_fields *f, 1174 unsigned char *p, struct psmouse *psmouse) 1175 { 1176 struct alps_data *priv = psmouse->private; 1177 unsigned char pkt_id; 1178 unsigned int no_data_x, no_data_y; 1179 1180 pkt_id = alps_get_pkt_id_ss4_v2(p); 1181 1182 /* Current packet is 1Finger coordinate packet */ 1183 switch (pkt_id) { 1184 case SS4_PACKET_ID_ONE: 1185 f->mt[0].x = SS4_1F_X_V2(p); 1186 f->mt[0].y = SS4_1F_Y_V2(p); 1187 f->pressure = ((SS4_1F_Z_V2(p)) * 2) & 0x7f; 1188 f->fingers = 1; 1189 f->first_mp = 0; 1190 f->is_mp = 0; 1191 break; 1192 1193 case SS4_PACKET_ID_TWO: 1194 if (priv->flags & ALPS_BUTTONPAD) { 1195 f->mt[0].x = SS4_BTL_MF_X_V2(p, 0); 1196 f->mt[0].y = SS4_BTL_MF_Y_V2(p, 0); 1197 f->mt[1].x = SS4_BTL_MF_X_V2(p, 1); 1198 f->mt[1].y = SS4_BTL_MF_Y_V2(p, 1); 1199 } else { 1200 f->mt[0].x = SS4_STD_MF_X_V2(p, 0); 1201 f->mt[0].y = SS4_STD_MF_Y_V2(p, 0); 1202 f->mt[1].x = SS4_STD_MF_X_V2(p, 1); 1203 f->mt[1].y = SS4_STD_MF_Y_V2(p, 1); 1204 } 1205 f->pressure = SS4_MF_Z_V2(p, 0) ? 0x30 : 0; 1206 1207 if (SS4_IS_MF_CONTINUE(p)) { 1208 f->first_mp = 1; 1209 } else { 1210 f->fingers = 2; 1211 f->first_mp = 0; 1212 } 1213 f->is_mp = 0; 1214 1215 break; 1216 1217 case SS4_PACKET_ID_MULTI: 1218 if (priv->flags & ALPS_BUTTONPAD) { 1219 f->mt[2].x = SS4_BTL_MF_X_V2(p, 0); 1220 f->mt[2].y = SS4_BTL_MF_Y_V2(p, 0); 1221 f->mt[3].x = SS4_BTL_MF_X_V2(p, 1); 1222 f->mt[3].y = SS4_BTL_MF_Y_V2(p, 1); 1223 no_data_x = SS4_MFPACKET_NO_AX_BL; 1224 no_data_y = SS4_MFPACKET_NO_AY_BL; 1225 } else { 1226 f->mt[2].x = SS4_STD_MF_X_V2(p, 0); 1227 f->mt[2].y = SS4_STD_MF_Y_V2(p, 0); 1228 f->mt[3].x = SS4_STD_MF_X_V2(p, 1); 1229 f->mt[3].y = SS4_STD_MF_Y_V2(p, 1); 1230 no_data_x = SS4_MFPACKET_NO_AX; 1231 no_data_y = SS4_MFPACKET_NO_AY; 1232 } 1233 1234 f->first_mp = 0; 1235 f->is_mp = 1; 1236 1237 if (SS4_IS_5F_DETECTED(p)) { 1238 f->fingers = 5; 1239 } else if (f->mt[3].x == no_data_x && 1240 f->mt[3].y == no_data_y) { 1241 f->mt[3].x = 0; 1242 f->mt[3].y = 0; 1243 f->fingers = 3; 1244 } else { 1245 f->fingers = 4; 1246 } 1247 break; 1248 1249 case SS4_PACKET_ID_IDLE: 1250 default: 1251 memset(f, 0, sizeof(struct alps_fields)); 1252 break; 1253 } 1254 1255 f->left = !!(SS4_BTN_V2(p) & 0x01); 1256 if (!(priv->flags & ALPS_BUTTONPAD)) { 1257 f->right = !!(SS4_BTN_V2(p) & 0x02); 1258 f->middle = !!(SS4_BTN_V2(p) & 0x04); 1259 } 1260 1261 return 0; 1262 } 1263 1264 static void alps_process_packet_ss4_v2(struct psmouse *psmouse) 1265 { 1266 struct alps_data *priv = psmouse->private; 1267 unsigned char *packet = psmouse->packet; 1268 struct input_dev *dev = psmouse->dev; 1269 struct alps_fields *f = &priv->f; 1270 1271 memset(f, 0, sizeof(struct alps_fields)); 1272 priv->decode_fields(f, packet, psmouse); 1273 if (priv->multi_packet) { 1274 /* 1275 * Sometimes the first packet will indicate a multi-packet 1276 * sequence, but sometimes the next multi-packet would not 1277 * come. Check for this, and when it happens process the 1278 * position packet as usual. 1279 */ 1280 if (f->is_mp) { 1281 /* Now process the 1st packet */ 1282 priv->decode_fields(f, priv->multi_data, psmouse); 1283 } else { 1284 priv->multi_packet = 0; 1285 } 1286 } 1287 1288 /* 1289 * "f.is_mp" would always be '0' after merging the 1st and 2nd packet. 1290 * When it is set, it means 2nd packet comes without 1st packet come. 1291 */ 1292 if (f->is_mp) 1293 return; 1294 1295 /* Save the first packet */ 1296 if (!priv->multi_packet && f->first_mp) { 1297 priv->multi_packet = 1; 1298 memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); 1299 return; 1300 } 1301 1302 priv->multi_packet = 0; 1303 1304 alps_report_mt_data(psmouse, (f->fingers <= 4) ? f->fingers : 4); 1305 1306 input_mt_report_finger_count(dev, f->fingers); 1307 1308 input_report_key(dev, BTN_LEFT, f->left); 1309 input_report_key(dev, BTN_RIGHT, f->right); 1310 input_report_key(dev, BTN_MIDDLE, f->middle); 1311 1312 input_report_abs(dev, ABS_PRESSURE, f->pressure); 1313 input_sync(dev); 1314 } 1315 1316 static bool alps_is_valid_package_ss4_v2(struct psmouse *psmouse) 1317 { 1318 if (psmouse->pktcnt == 4 && ((psmouse->packet[3] & 0x08) != 0x08)) 1319 return false; 1320 if (psmouse->pktcnt == 6 && ((psmouse->packet[5] & 0x10) != 0x0)) 1321 return false; 1322 return true; 1323 } 1324 1325 static DEFINE_MUTEX(alps_mutex); 1326 1327 static void alps_register_bare_ps2_mouse(struct work_struct *work) 1328 { 1329 struct alps_data *priv = 1330 container_of(work, struct alps_data, dev3_register_work.work); 1331 struct psmouse *psmouse = priv->psmouse; 1332 struct input_dev *dev3; 1333 int error = 0; 1334 1335 mutex_lock(&alps_mutex); 1336 1337 if (priv->dev3) 1338 goto out; 1339 1340 dev3 = input_allocate_device(); 1341 if (!dev3) { 1342 psmouse_err(psmouse, "failed to allocate secondary device\n"); 1343 error = -ENOMEM; 1344 goto out; 1345 } 1346 1347 snprintf(priv->phys3, sizeof(priv->phys3), "%s/%s", 1348 psmouse->ps2dev.serio->phys, 1349 (priv->dev2 ? "input2" : "input1")); 1350 dev3->phys = priv->phys3; 1351 1352 /* 1353 * format of input device name is: "protocol vendor name" 1354 * see function psmouse_switch_protocol() in psmouse-base.c 1355 */ 1356 dev3->name = "PS/2 ALPS Mouse"; 1357 1358 dev3->id.bustype = BUS_I8042; 1359 dev3->id.vendor = 0x0002; 1360 dev3->id.product = PSMOUSE_PS2; 1361 dev3->id.version = 0x0000; 1362 dev3->dev.parent = &psmouse->ps2dev.serio->dev; 1363 1364 input_set_capability(dev3, EV_REL, REL_X); 1365 input_set_capability(dev3, EV_REL, REL_Y); 1366 input_set_capability(dev3, EV_KEY, BTN_LEFT); 1367 input_set_capability(dev3, EV_KEY, BTN_RIGHT); 1368 input_set_capability(dev3, EV_KEY, BTN_MIDDLE); 1369 1370 __set_bit(INPUT_PROP_POINTER, dev3->propbit); 1371 1372 error = input_register_device(dev3); 1373 if (error) { 1374 psmouse_err(psmouse, 1375 "failed to register secondary device: %d\n", 1376 error); 1377 input_free_device(dev3); 1378 goto out; 1379 } 1380 1381 priv->dev3 = dev3; 1382 1383 out: 1384 /* 1385 * Save the error code so that we can detect that we 1386 * already tried to create the device. 1387 */ 1388 if (error) 1389 priv->dev3 = ERR_PTR(error); 1390 1391 mutex_unlock(&alps_mutex); 1392 } 1393 1394 static void alps_report_bare_ps2_packet(struct psmouse *psmouse, 1395 unsigned char packet[], 1396 bool report_buttons) 1397 { 1398 struct alps_data *priv = psmouse->private; 1399 struct input_dev *dev, *dev2 = NULL; 1400 1401 /* Figure out which device to use to report the bare packet */ 1402 if (priv->proto_version == ALPS_PROTO_V2 && 1403 (priv->flags & ALPS_DUALPOINT)) { 1404 /* On V2 devices the DualPoint Stick reports bare packets */ 1405 dev = priv->dev2; 1406 dev2 = psmouse->dev; 1407 } else if (unlikely(IS_ERR_OR_NULL(priv->dev3))) { 1408 /* Register dev3 mouse if we received PS/2 packet first time */ 1409 if (!IS_ERR(priv->dev3)) 1410 psmouse_queue_work(psmouse, &priv->dev3_register_work, 1411 0); 1412 return; 1413 } else { 1414 dev = priv->dev3; 1415 } 1416 1417 if (report_buttons) 1418 alps_report_buttons(dev, dev2, 1419 packet[0] & 1, packet[0] & 2, packet[0] & 4); 1420 1421 input_report_rel(dev, REL_X, 1422 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0); 1423 input_report_rel(dev, REL_Y, 1424 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0); 1425 1426 input_sync(dev); 1427 } 1428 1429 static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse) 1430 { 1431 struct alps_data *priv = psmouse->private; 1432 1433 if (psmouse->pktcnt < 6) 1434 return PSMOUSE_GOOD_DATA; 1435 1436 if (psmouse->pktcnt == 6) { 1437 /* 1438 * Start a timer to flush the packet if it ends up last 1439 * 6-byte packet in the stream. Timer needs to fire 1440 * psmouse core times out itself. 20 ms should be enough 1441 * to decide if we are getting more data or not. 1442 */ 1443 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20)); 1444 return PSMOUSE_GOOD_DATA; 1445 } 1446 1447 del_timer(&priv->timer); 1448 1449 if (psmouse->packet[6] & 0x80) { 1450 1451 /* 1452 * Highest bit is set - that means we either had 1453 * complete ALPS packet and this is start of the 1454 * next packet or we got garbage. 1455 */ 1456 1457 if (((psmouse->packet[3] | 1458 psmouse->packet[4] | 1459 psmouse->packet[5]) & 0x80) || 1460 (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) { 1461 psmouse_dbg(psmouse, 1462 "refusing packet %4ph (suspected interleaved ps/2)\n", 1463 psmouse->packet + 3); 1464 return PSMOUSE_BAD_DATA; 1465 } 1466 1467 priv->process_packet(psmouse); 1468 1469 /* Continue with the next packet */ 1470 psmouse->packet[0] = psmouse->packet[6]; 1471 psmouse->pktcnt = 1; 1472 1473 } else { 1474 1475 /* 1476 * High bit is 0 - that means that we indeed got a PS/2 1477 * packet in the middle of ALPS packet. 1478 * 1479 * There is also possibility that we got 6-byte ALPS 1480 * packet followed by 3-byte packet from trackpoint. We 1481 * can not distinguish between these 2 scenarios but 1482 * because the latter is unlikely to happen in course of 1483 * normal operation (user would need to press all 1484 * buttons on the pad and start moving trackpoint 1485 * without touching the pad surface) we assume former. 1486 * Even if we are wrong the wost thing that would happen 1487 * the cursor would jump but we should not get protocol 1488 * de-synchronization. 1489 */ 1490 1491 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3], 1492 false); 1493 1494 /* 1495 * Continue with the standard ALPS protocol handling, 1496 * but make sure we won't process it as an interleaved 1497 * packet again, which may happen if all buttons are 1498 * pressed. To avoid this let's reset the 4th bit which 1499 * is normally 1. 1500 */ 1501 psmouse->packet[3] = psmouse->packet[6] & 0xf7; 1502 psmouse->pktcnt = 4; 1503 } 1504 1505 return PSMOUSE_GOOD_DATA; 1506 } 1507 1508 static void alps_flush_packet(unsigned long data) 1509 { 1510 struct psmouse *psmouse = (struct psmouse *)data; 1511 struct alps_data *priv = psmouse->private; 1512 1513 serio_pause_rx(psmouse->ps2dev.serio); 1514 1515 if (psmouse->pktcnt == psmouse->pktsize) { 1516 1517 /* 1518 * We did not any more data in reasonable amount of time. 1519 * Validate the last 3 bytes and process as a standard 1520 * ALPS packet. 1521 */ 1522 if ((psmouse->packet[3] | 1523 psmouse->packet[4] | 1524 psmouse->packet[5]) & 0x80) { 1525 psmouse_dbg(psmouse, 1526 "refusing packet %3ph (suspected interleaved ps/2)\n", 1527 psmouse->packet + 3); 1528 } else { 1529 priv->process_packet(psmouse); 1530 } 1531 psmouse->pktcnt = 0; 1532 } 1533 1534 serio_continue_rx(psmouse->ps2dev.serio); 1535 } 1536 1537 static psmouse_ret_t alps_process_byte(struct psmouse *psmouse) 1538 { 1539 struct alps_data *priv = psmouse->private; 1540 1541 /* 1542 * Check if we are dealing with a bare PS/2 packet, presumably from 1543 * a device connected to the external PS/2 port. Because bare PS/2 1544 * protocol does not have enough constant bits to self-synchronize 1545 * properly we only do this if the device is fully synchronized. 1546 * Can not distinguish V8's first byte from PS/2 packet's 1547 */ 1548 if (priv->proto_version != ALPS_PROTO_V8 && 1549 !psmouse->out_of_sync_cnt && 1550 (psmouse->packet[0] & 0xc8) == 0x08) { 1551 1552 if (psmouse->pktcnt == 3) { 1553 alps_report_bare_ps2_packet(psmouse, psmouse->packet, 1554 true); 1555 return PSMOUSE_FULL_PACKET; 1556 } 1557 return PSMOUSE_GOOD_DATA; 1558 } 1559 1560 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */ 1561 1562 if ((priv->flags & ALPS_PS2_INTERLEAVED) && 1563 psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) { 1564 return alps_handle_interleaved_ps2(psmouse); 1565 } 1566 1567 if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) { 1568 psmouse_dbg(psmouse, 1569 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n", 1570 psmouse->packet[0], priv->mask0, priv->byte0); 1571 return PSMOUSE_BAD_DATA; 1572 } 1573 1574 /* Bytes 2 - pktsize should have 0 in the highest bit */ 1575 if (priv->proto_version < ALPS_PROTO_V5 && 1576 psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize && 1577 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) { 1578 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1579 psmouse->pktcnt - 1, 1580 psmouse->packet[psmouse->pktcnt - 1]); 1581 1582 if (priv->proto_version == ALPS_PROTO_V3_RUSHMORE && 1583 psmouse->pktcnt == psmouse->pktsize) { 1584 /* 1585 * Some Dell boxes, such as Latitude E6440 or E7440 1586 * with closed lid, quite often smash last byte of 1587 * otherwise valid packet with 0xff. Given that the 1588 * next packet is very likely to be valid let's 1589 * report PSMOUSE_FULL_PACKET but not process data, 1590 * rather than reporting PSMOUSE_BAD_DATA and 1591 * filling the logs. 1592 */ 1593 return PSMOUSE_FULL_PACKET; 1594 } 1595 1596 return PSMOUSE_BAD_DATA; 1597 } 1598 1599 if ((priv->proto_version == ALPS_PROTO_V7 && 1600 !alps_is_valid_package_v7(psmouse)) || 1601 (priv->proto_version == ALPS_PROTO_V8 && 1602 !alps_is_valid_package_ss4_v2(psmouse))) { 1603 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1604 psmouse->pktcnt - 1, 1605 psmouse->packet[psmouse->pktcnt - 1]); 1606 return PSMOUSE_BAD_DATA; 1607 } 1608 1609 if (psmouse->pktcnt == psmouse->pktsize) { 1610 priv->process_packet(psmouse); 1611 return PSMOUSE_FULL_PACKET; 1612 } 1613 1614 return PSMOUSE_GOOD_DATA; 1615 } 1616 1617 static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble) 1618 { 1619 struct ps2dev *ps2dev = &psmouse->ps2dev; 1620 struct alps_data *priv = psmouse->private; 1621 int command; 1622 unsigned char *param; 1623 unsigned char dummy[4]; 1624 1625 BUG_ON(nibble > 0xf); 1626 1627 command = priv->nibble_commands[nibble].command; 1628 param = (command & 0x0f00) ? 1629 dummy : (unsigned char *)&priv->nibble_commands[nibble].data; 1630 1631 if (ps2_command(ps2dev, param, command)) 1632 return -1; 1633 1634 return 0; 1635 } 1636 1637 static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr) 1638 { 1639 struct ps2dev *ps2dev = &psmouse->ps2dev; 1640 struct alps_data *priv = psmouse->private; 1641 int i, nibble; 1642 1643 if (ps2_command(ps2dev, NULL, priv->addr_command)) 1644 return -1; 1645 1646 for (i = 12; i >= 0; i -= 4) { 1647 nibble = (addr >> i) & 0xf; 1648 if (alps_command_mode_send_nibble(psmouse, nibble)) 1649 return -1; 1650 } 1651 1652 return 0; 1653 } 1654 1655 static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1656 { 1657 struct ps2dev *ps2dev = &psmouse->ps2dev; 1658 unsigned char param[4]; 1659 1660 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1661 return -1; 1662 1663 /* 1664 * The address being read is returned in the first two bytes 1665 * of the result. Check that this address matches the expected 1666 * address. 1667 */ 1668 if (addr != ((param[0] << 8) | param[1])) 1669 return -1; 1670 1671 return param[2]; 1672 } 1673 1674 static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1675 { 1676 if (alps_command_mode_set_addr(psmouse, addr)) 1677 return -1; 1678 return __alps_command_mode_read_reg(psmouse, addr); 1679 } 1680 1681 static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value) 1682 { 1683 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf)) 1684 return -1; 1685 if (alps_command_mode_send_nibble(psmouse, value & 0xf)) 1686 return -1; 1687 return 0; 1688 } 1689 1690 static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr, 1691 u8 value) 1692 { 1693 if (alps_command_mode_set_addr(psmouse, addr)) 1694 return -1; 1695 return __alps_command_mode_write_reg(psmouse, value); 1696 } 1697 1698 static int alps_rpt_cmd(struct psmouse *psmouse, int init_command, 1699 int repeated_command, unsigned char *param) 1700 { 1701 struct ps2dev *ps2dev = &psmouse->ps2dev; 1702 1703 param[0] = 0; 1704 if (init_command && ps2_command(ps2dev, param, init_command)) 1705 return -EIO; 1706 1707 if (ps2_command(ps2dev, NULL, repeated_command) || 1708 ps2_command(ps2dev, NULL, repeated_command) || 1709 ps2_command(ps2dev, NULL, repeated_command)) 1710 return -EIO; 1711 1712 param[0] = param[1] = param[2] = 0xff; 1713 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1714 return -EIO; 1715 1716 psmouse_dbg(psmouse, "%2.2X report: %3ph\n", 1717 repeated_command, param); 1718 return 0; 1719 } 1720 1721 static bool alps_check_valid_firmware_id(unsigned char id[]) 1722 { 1723 if (id[0] == 0x73) 1724 return true; 1725 1726 if (id[0] == 0x88 && 1727 (id[1] == 0x07 || 1728 id[1] == 0x08 || 1729 (id[1] & 0xf0) == 0xb0 || 1730 (id[1] & 0xf0) == 0xc0)) { 1731 return true; 1732 } 1733 1734 return false; 1735 } 1736 1737 static int alps_enter_command_mode(struct psmouse *psmouse) 1738 { 1739 unsigned char param[4]; 1740 1741 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) { 1742 psmouse_err(psmouse, "failed to enter command mode\n"); 1743 return -1; 1744 } 1745 1746 if (!alps_check_valid_firmware_id(param)) { 1747 psmouse_dbg(psmouse, 1748 "unknown response while entering command mode\n"); 1749 return -1; 1750 } 1751 return 0; 1752 } 1753 1754 static inline int alps_exit_command_mode(struct psmouse *psmouse) 1755 { 1756 struct ps2dev *ps2dev = &psmouse->ps2dev; 1757 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) 1758 return -1; 1759 return 0; 1760 } 1761 1762 /* 1763 * For DualPoint devices select the device that should respond to 1764 * subsequent commands. It looks like glidepad is behind stickpointer, 1765 * I'd thought it would be other way around... 1766 */ 1767 static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable) 1768 { 1769 struct ps2dev *ps2dev = &psmouse->ps2dev; 1770 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11; 1771 1772 if (ps2_command(ps2dev, NULL, cmd) || 1773 ps2_command(ps2dev, NULL, cmd) || 1774 ps2_command(ps2dev, NULL, cmd) || 1775 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1776 return -1; 1777 1778 /* we may get 3 more bytes, just ignore them */ 1779 ps2_drain(ps2dev, 3, 100); 1780 1781 return 0; 1782 } 1783 1784 static int alps_absolute_mode_v1_v2(struct psmouse *psmouse) 1785 { 1786 struct ps2dev *ps2dev = &psmouse->ps2dev; 1787 1788 /* Try ALPS magic knock - 4 disable before enable */ 1789 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1790 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1791 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1792 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1793 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) 1794 return -1; 1795 1796 /* 1797 * Switch mouse to poll (remote) mode so motion data will not 1798 * get in our way 1799 */ 1800 return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL); 1801 } 1802 1803 static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word) 1804 { 1805 int i, nibble; 1806 1807 /* 1808 * b0-b11 are valid bits, send sequence is inverse. 1809 * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1 1810 */ 1811 for (i = 0; i <= 8; i += 4) { 1812 nibble = (word >> i) & 0xf; 1813 if (alps_command_mode_send_nibble(psmouse, nibble)) 1814 return -1; 1815 } 1816 1817 return 0; 1818 } 1819 1820 static int alps_monitor_mode_write_reg(struct psmouse *psmouse, 1821 u16 addr, u16 value) 1822 { 1823 struct ps2dev *ps2dev = &psmouse->ps2dev; 1824 1825 /* 0x0A0 is the command to write the word */ 1826 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) || 1827 alps_monitor_mode_send_word(psmouse, 0x0A0) || 1828 alps_monitor_mode_send_word(psmouse, addr) || 1829 alps_monitor_mode_send_word(psmouse, value) || 1830 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1831 return -1; 1832 1833 return 0; 1834 } 1835 1836 static int alps_monitor_mode(struct psmouse *psmouse, bool enable) 1837 { 1838 struct ps2dev *ps2dev = &psmouse->ps2dev; 1839 1840 if (enable) { 1841 /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */ 1842 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 1843 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) || 1844 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1845 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1846 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1847 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1848 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1849 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO)) 1850 return -1; 1851 } else { 1852 /* EC to exit monitor mode */ 1853 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP)) 1854 return -1; 1855 } 1856 1857 return 0; 1858 } 1859 1860 static int alps_absolute_mode_v6(struct psmouse *psmouse) 1861 { 1862 u16 reg_val = 0x181; 1863 int ret = -1; 1864 1865 /* enter monitor mode, to write the register */ 1866 if (alps_monitor_mode(psmouse, true)) 1867 return -1; 1868 1869 ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val); 1870 1871 if (alps_monitor_mode(psmouse, false)) 1872 ret = -1; 1873 1874 return ret; 1875 } 1876 1877 static int alps_get_status(struct psmouse *psmouse, char *param) 1878 { 1879 /* Get status: 0xF5 0xF5 0xF5 0xE9 */ 1880 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param)) 1881 return -1; 1882 1883 return 0; 1884 } 1885 1886 /* 1887 * Turn touchpad tapping on or off. The sequences are: 1888 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable, 1889 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable. 1890 * My guess that 0xE9 (GetInfo) is here as a sync point. 1891 * For models that also have stickpointer (DualPoints) its tapping 1892 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but 1893 * we don't fiddle with it. 1894 */ 1895 static int alps_tap_mode(struct psmouse *psmouse, int enable) 1896 { 1897 struct ps2dev *ps2dev = &psmouse->ps2dev; 1898 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES; 1899 unsigned char tap_arg = enable ? 0x0A : 0x00; 1900 unsigned char param[4]; 1901 1902 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) || 1903 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1904 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1905 ps2_command(ps2dev, &tap_arg, cmd)) 1906 return -1; 1907 1908 if (alps_get_status(psmouse, param)) 1909 return -1; 1910 1911 return 0; 1912 } 1913 1914 /* 1915 * alps_poll() - poll the touchpad for current motion packet. 1916 * Used in resync. 1917 */ 1918 static int alps_poll(struct psmouse *psmouse) 1919 { 1920 struct alps_data *priv = psmouse->private; 1921 unsigned char buf[sizeof(psmouse->packet)]; 1922 bool poll_failed; 1923 1924 if (priv->flags & ALPS_PASS) 1925 alps_passthrough_mode_v2(psmouse, true); 1926 1927 poll_failed = ps2_command(&psmouse->ps2dev, buf, 1928 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0; 1929 1930 if (priv->flags & ALPS_PASS) 1931 alps_passthrough_mode_v2(psmouse, false); 1932 1933 if (poll_failed || (buf[0] & priv->mask0) != priv->byte0) 1934 return -1; 1935 1936 if ((psmouse->badbyte & 0xc8) == 0x08) { 1937 /* 1938 * Poll the track stick ... 1939 */ 1940 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8))) 1941 return -1; 1942 } 1943 1944 memcpy(psmouse->packet, buf, sizeof(buf)); 1945 return 0; 1946 } 1947 1948 static int alps_hw_init_v1_v2(struct psmouse *psmouse) 1949 { 1950 struct alps_data *priv = psmouse->private; 1951 1952 if ((priv->flags & ALPS_PASS) && 1953 alps_passthrough_mode_v2(psmouse, true)) { 1954 return -1; 1955 } 1956 1957 if (alps_tap_mode(psmouse, true)) { 1958 psmouse_warn(psmouse, "Failed to enable hardware tapping\n"); 1959 return -1; 1960 } 1961 1962 if (alps_absolute_mode_v1_v2(psmouse)) { 1963 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 1964 return -1; 1965 } 1966 1967 if ((priv->flags & ALPS_PASS) && 1968 alps_passthrough_mode_v2(psmouse, false)) { 1969 return -1; 1970 } 1971 1972 /* ALPS needs stream mode, otherwise it won't report any data */ 1973 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) { 1974 psmouse_err(psmouse, "Failed to enable stream mode\n"); 1975 return -1; 1976 } 1977 1978 return 0; 1979 } 1980 1981 static int alps_hw_init_v6(struct psmouse *psmouse) 1982 { 1983 unsigned char param[2] = {0xC8, 0x14}; 1984 1985 /* Enter passthrough mode to let trackpoint enter 6byte raw mode */ 1986 if (alps_passthrough_mode_v2(psmouse, true)) 1987 return -1; 1988 1989 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1990 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1991 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1992 ps2_command(&psmouse->ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 1993 ps2_command(&psmouse->ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 1994 return -1; 1995 1996 if (alps_passthrough_mode_v2(psmouse, false)) 1997 return -1; 1998 1999 if (alps_absolute_mode_v6(psmouse)) { 2000 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 2001 return -1; 2002 } 2003 2004 return 0; 2005 } 2006 2007 /* 2008 * Enable or disable passthrough mode to the trackstick. 2009 */ 2010 static int alps_passthrough_mode_v3(struct psmouse *psmouse, 2011 int reg_base, bool enable) 2012 { 2013 int reg_val, ret = -1; 2014 2015 if (alps_enter_command_mode(psmouse)) 2016 return -1; 2017 2018 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008); 2019 if (reg_val == -1) 2020 goto error; 2021 2022 if (enable) 2023 reg_val |= 0x01; 2024 else 2025 reg_val &= ~0x01; 2026 2027 ret = __alps_command_mode_write_reg(psmouse, reg_val); 2028 2029 error: 2030 if (alps_exit_command_mode(psmouse)) 2031 ret = -1; 2032 return ret; 2033 } 2034 2035 /* Must be in command mode when calling this function */ 2036 static int alps_absolute_mode_v3(struct psmouse *psmouse) 2037 { 2038 int reg_val; 2039 2040 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 2041 if (reg_val == -1) 2042 return -1; 2043 2044 reg_val |= 0x06; 2045 if (__alps_command_mode_write_reg(psmouse, reg_val)) 2046 return -1; 2047 2048 return 0; 2049 } 2050 2051 static int alps_probe_trackstick_v3_v7(struct psmouse *psmouse, int reg_base) 2052 { 2053 int ret = -EIO, reg_val; 2054 2055 if (alps_enter_command_mode(psmouse)) 2056 goto error; 2057 2058 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08); 2059 if (reg_val == -1) 2060 goto error; 2061 2062 /* bit 7: trackstick is present */ 2063 ret = reg_val & 0x80 ? 0 : -ENODEV; 2064 2065 error: 2066 alps_exit_command_mode(psmouse); 2067 return ret; 2068 } 2069 2070 static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base) 2071 { 2072 struct ps2dev *ps2dev = &psmouse->ps2dev; 2073 int ret = 0; 2074 unsigned char param[4]; 2075 2076 if (alps_passthrough_mode_v3(psmouse, reg_base, true)) 2077 return -EIO; 2078 2079 /* 2080 * E7 report for the trackstick 2081 * 2082 * There have been reports of failures to seem to trace back 2083 * to the above trackstick check failing. When these occur 2084 * this E7 report fails, so when that happens we continue 2085 * with the assumption that there isn't a trackstick after 2086 * all. 2087 */ 2088 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) { 2089 psmouse_warn(psmouse, "Failed to initialize trackstick (E7 report failed)\n"); 2090 ret = -ENODEV; 2091 } else { 2092 psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param); 2093 2094 /* 2095 * Not sure what this does, but it is absolutely 2096 * essential. Without it, the touchpad does not 2097 * work at all and the trackstick just emits normal 2098 * PS/2 packets. 2099 */ 2100 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2101 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2102 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2103 alps_command_mode_send_nibble(psmouse, 0x9) || 2104 alps_command_mode_send_nibble(psmouse, 0x4)) { 2105 psmouse_err(psmouse, 2106 "Error sending magic E6 sequence\n"); 2107 ret = -EIO; 2108 goto error; 2109 } 2110 2111 /* 2112 * This ensures the trackstick packets are in the format 2113 * supported by this driver. If bit 1 isn't set the packet 2114 * format is different. 2115 */ 2116 if (alps_enter_command_mode(psmouse) || 2117 alps_command_mode_write_reg(psmouse, 2118 reg_base + 0x08, 0x82) || 2119 alps_exit_command_mode(psmouse)) 2120 ret = -EIO; 2121 } 2122 2123 error: 2124 if (alps_passthrough_mode_v3(psmouse, reg_base, false)) 2125 ret = -EIO; 2126 2127 return ret; 2128 } 2129 2130 static int alps_hw_init_v3(struct psmouse *psmouse) 2131 { 2132 struct alps_data *priv = psmouse->private; 2133 struct ps2dev *ps2dev = &psmouse->ps2dev; 2134 int reg_val; 2135 unsigned char param[4]; 2136 2137 if ((priv->flags & ALPS_DUALPOINT) && 2138 alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO) 2139 goto error; 2140 2141 if (alps_enter_command_mode(psmouse) || 2142 alps_absolute_mode_v3(psmouse)) { 2143 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 2144 goto error; 2145 } 2146 2147 reg_val = alps_command_mode_read_reg(psmouse, 0x0006); 2148 if (reg_val == -1) 2149 goto error; 2150 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 2151 goto error; 2152 2153 reg_val = alps_command_mode_read_reg(psmouse, 0x0007); 2154 if (reg_val == -1) 2155 goto error; 2156 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 2157 goto error; 2158 2159 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1) 2160 goto error; 2161 if (__alps_command_mode_write_reg(psmouse, 0x04)) 2162 goto error; 2163 2164 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1) 2165 goto error; 2166 if (__alps_command_mode_write_reg(psmouse, 0x03)) 2167 goto error; 2168 2169 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1) 2170 goto error; 2171 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03)) 2172 goto error; 2173 2174 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1) 2175 goto error; 2176 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04)) 2177 goto error; 2178 2179 alps_exit_command_mode(psmouse); 2180 2181 /* Set rate and enable data reporting */ 2182 param[0] = 0x64; 2183 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 2184 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 2185 psmouse_err(psmouse, "Failed to enable data reporting\n"); 2186 return -1; 2187 } 2188 2189 return 0; 2190 2191 error: 2192 /* 2193 * Leaving the touchpad in command mode will essentially render 2194 * it unusable until the machine reboots, so exit it here just 2195 * to be safe 2196 */ 2197 alps_exit_command_mode(psmouse); 2198 return -1; 2199 } 2200 2201 static int alps_get_v3_v7_resolution(struct psmouse *psmouse, int reg_pitch) 2202 { 2203 int reg, x_pitch, y_pitch, x_electrode, y_electrode, x_phys, y_phys; 2204 struct alps_data *priv = psmouse->private; 2205 2206 reg = alps_command_mode_read_reg(psmouse, reg_pitch); 2207 if (reg < 0) 2208 return reg; 2209 2210 x_pitch = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ 2211 x_pitch = 50 + 2 * x_pitch; /* In 0.1 mm units */ 2212 2213 y_pitch = (char)reg >> 4; /* sign extend upper 4 bits */ 2214 y_pitch = 36 + 2 * y_pitch; /* In 0.1 mm units */ 2215 2216 reg = alps_command_mode_read_reg(psmouse, reg_pitch + 1); 2217 if (reg < 0) 2218 return reg; 2219 2220 x_electrode = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ 2221 x_electrode = 17 + x_electrode; 2222 2223 y_electrode = (char)reg >> 4; /* sign extend upper 4 bits */ 2224 y_electrode = 13 + y_electrode; 2225 2226 x_phys = x_pitch * (x_electrode - 1); /* In 0.1 mm units */ 2227 y_phys = y_pitch * (y_electrode - 1); /* In 0.1 mm units */ 2228 2229 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ 2230 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ 2231 2232 psmouse_dbg(psmouse, 2233 "pitch %dx%d num-electrodes %dx%d physical size %dx%d mm res %dx%d\n", 2234 x_pitch, y_pitch, x_electrode, y_electrode, 2235 x_phys / 10, y_phys / 10, priv->x_res, priv->y_res); 2236 2237 return 0; 2238 } 2239 2240 static int alps_hw_init_rushmore_v3(struct psmouse *psmouse) 2241 { 2242 struct alps_data *priv = psmouse->private; 2243 struct ps2dev *ps2dev = &psmouse->ps2dev; 2244 int reg_val, ret = -1; 2245 2246 if (priv->flags & ALPS_DUALPOINT) { 2247 reg_val = alps_setup_trackstick_v3(psmouse, 2248 ALPS_REG_BASE_RUSHMORE); 2249 if (reg_val == -EIO) 2250 goto error; 2251 } 2252 2253 if (alps_enter_command_mode(psmouse) || 2254 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 || 2255 alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00)) 2256 goto error; 2257 2258 if (alps_get_v3_v7_resolution(psmouse, 0xc2da)) 2259 goto error; 2260 2261 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6); 2262 if (reg_val == -1) 2263 goto error; 2264 if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd)) 2265 goto error; 2266 2267 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 2268 goto error; 2269 2270 /* enter absolute mode */ 2271 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 2272 if (reg_val == -1) 2273 goto error; 2274 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 2275 goto error; 2276 2277 alps_exit_command_mode(psmouse); 2278 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2279 2280 error: 2281 alps_exit_command_mode(psmouse); 2282 return ret; 2283 } 2284 2285 /* Must be in command mode when calling this function */ 2286 static int alps_absolute_mode_v4(struct psmouse *psmouse) 2287 { 2288 int reg_val; 2289 2290 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 2291 if (reg_val == -1) 2292 return -1; 2293 2294 reg_val |= 0x02; 2295 if (__alps_command_mode_write_reg(psmouse, reg_val)) 2296 return -1; 2297 2298 return 0; 2299 } 2300 2301 static int alps_hw_init_v4(struct psmouse *psmouse) 2302 { 2303 struct ps2dev *ps2dev = &psmouse->ps2dev; 2304 unsigned char param[4]; 2305 2306 if (alps_enter_command_mode(psmouse)) 2307 goto error; 2308 2309 if (alps_absolute_mode_v4(psmouse)) { 2310 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 2311 goto error; 2312 } 2313 2314 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c)) 2315 goto error; 2316 2317 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03)) 2318 goto error; 2319 2320 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03)) 2321 goto error; 2322 2323 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15)) 2324 goto error; 2325 2326 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01)) 2327 goto error; 2328 2329 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03)) 2330 goto error; 2331 2332 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03)) 2333 goto error; 2334 2335 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03)) 2336 goto error; 2337 2338 alps_exit_command_mode(psmouse); 2339 2340 /* 2341 * This sequence changes the output from a 9-byte to an 2342 * 8-byte format. All the same data seems to be present, 2343 * just in a more compact format. 2344 */ 2345 param[0] = 0xc8; 2346 param[1] = 0x64; 2347 param[2] = 0x50; 2348 if (ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2349 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE) || 2350 ps2_command(ps2dev, ¶m[2], PSMOUSE_CMD_SETRATE) || 2351 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) 2352 return -1; 2353 2354 /* Set rate and enable data reporting */ 2355 param[0] = 0x64; 2356 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 2357 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 2358 psmouse_err(psmouse, "Failed to enable data reporting\n"); 2359 return -1; 2360 } 2361 2362 return 0; 2363 2364 error: 2365 /* 2366 * Leaving the touchpad in command mode will essentially render 2367 * it unusable until the machine reboots, so exit it here just 2368 * to be safe 2369 */ 2370 alps_exit_command_mode(psmouse); 2371 return -1; 2372 } 2373 2374 static int alps_get_otp_values_ss4_v2(struct psmouse *psmouse, 2375 unsigned char index, unsigned char otp[]) 2376 { 2377 struct ps2dev *ps2dev = &psmouse->ps2dev; 2378 2379 switch (index) { 2380 case 0: 2381 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2382 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2383 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) 2384 return -1; 2385 2386 break; 2387 2388 case 1: 2389 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2390 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2391 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) 2392 return -1; 2393 2394 break; 2395 } 2396 2397 return 0; 2398 } 2399 2400 static int alps_update_device_area_ss4_v2(unsigned char otp[][4], 2401 struct alps_data *priv) 2402 { 2403 int num_x_electrode; 2404 int num_y_electrode; 2405 int x_pitch, y_pitch, x_phys, y_phys; 2406 2407 num_x_electrode = SS4_NUMSENSOR_XOFFSET + (otp[1][0] & 0x0F); 2408 num_y_electrode = SS4_NUMSENSOR_YOFFSET + ((otp[1][0] >> 4) & 0x0F); 2409 2410 priv->x_max = (num_x_electrode - 1) * SS4_COUNT_PER_ELECTRODE; 2411 priv->y_max = (num_y_electrode - 1) * SS4_COUNT_PER_ELECTRODE; 2412 2413 x_pitch = ((otp[1][2] >> 2) & 0x07) + SS4_MIN_PITCH_MM; 2414 y_pitch = ((otp[1][2] >> 5) & 0x07) + SS4_MIN_PITCH_MM; 2415 2416 x_phys = x_pitch * (num_x_electrode - 1); /* In 0.1 mm units */ 2417 y_phys = y_pitch * (num_y_electrode - 1); /* In 0.1 mm units */ 2418 2419 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ 2420 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ 2421 2422 return 0; 2423 } 2424 2425 static int alps_update_btn_info_ss4_v2(unsigned char otp[][4], 2426 struct alps_data *priv) 2427 { 2428 unsigned char is_btnless; 2429 2430 is_btnless = (otp[1][1] >> 3) & 0x01; 2431 2432 if (is_btnless) 2433 priv->flags |= ALPS_BUTTONPAD; 2434 2435 return 0; 2436 } 2437 2438 static int alps_set_defaults_ss4_v2(struct psmouse *psmouse, 2439 struct alps_data *priv) 2440 { 2441 unsigned char otp[2][4]; 2442 2443 memset(otp, 0, sizeof(otp)); 2444 2445 if (alps_get_otp_values_ss4_v2(psmouse, 0, &otp[0][0]) || 2446 alps_get_otp_values_ss4_v2(psmouse, 1, &otp[1][0])) 2447 return -1; 2448 2449 alps_update_device_area_ss4_v2(otp, priv); 2450 2451 alps_update_btn_info_ss4_v2(otp, priv); 2452 2453 return 0; 2454 } 2455 2456 static int alps_dolphin_get_device_area(struct psmouse *psmouse, 2457 struct alps_data *priv) 2458 { 2459 struct ps2dev *ps2dev = &psmouse->ps2dev; 2460 unsigned char param[4] = {0}; 2461 int num_x_electrode, num_y_electrode; 2462 2463 if (alps_enter_command_mode(psmouse)) 2464 return -1; 2465 2466 param[0] = 0x0a; 2467 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 2468 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2469 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2470 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2471 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE)) 2472 return -1; 2473 2474 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 2475 return -1; 2476 2477 /* 2478 * Dolphin's sensor line number is not fixed. It can be calculated 2479 * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET. 2480 * Further more, we can get device's x_max and y_max by multiplying 2481 * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE. 2482 * 2483 * e.g. When we get register's sensor_x = 11 & sensor_y = 8, 2484 * real sensor line number X = 11 + 8 = 19, and 2485 * real sensor line number Y = 8 + 1 = 9. 2486 * So, x_max = (19 - 1) * 64 = 1152, and 2487 * y_max = (9 - 1) * 64 = 512. 2488 */ 2489 num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F); 2490 num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F); 2491 priv->x_bits = num_x_electrode; 2492 priv->y_bits = num_y_electrode; 2493 priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2494 priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2495 2496 if (alps_exit_command_mode(psmouse)) 2497 return -1; 2498 2499 return 0; 2500 } 2501 2502 static int alps_hw_init_dolphin_v1(struct psmouse *psmouse) 2503 { 2504 struct ps2dev *ps2dev = &psmouse->ps2dev; 2505 unsigned char param[2]; 2506 2507 /* This is dolphin "v1" as empirically defined by florin9doi */ 2508 param[0] = 0x64; 2509 param[1] = 0x28; 2510 2511 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2512 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2513 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 2514 return -1; 2515 2516 return 0; 2517 } 2518 2519 static int alps_hw_init_v7(struct psmouse *psmouse) 2520 { 2521 struct ps2dev *ps2dev = &psmouse->ps2dev; 2522 int reg_val, ret = -1; 2523 2524 if (alps_enter_command_mode(psmouse) || 2525 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1) 2526 goto error; 2527 2528 if (alps_get_v3_v7_resolution(psmouse, 0xc397)) 2529 goto error; 2530 2531 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 2532 goto error; 2533 2534 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 2535 if (reg_val == -1) 2536 goto error; 2537 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 2538 goto error; 2539 2540 alps_exit_command_mode(psmouse); 2541 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2542 2543 error: 2544 alps_exit_command_mode(psmouse); 2545 return ret; 2546 } 2547 2548 static int alps_hw_init_ss4_v2(struct psmouse *psmouse) 2549 { 2550 struct ps2dev *ps2dev = &psmouse->ps2dev; 2551 char param[2] = {0x64, 0x28}; 2552 int ret = -1; 2553 2554 /* enter absolute mode */ 2555 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2556 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2557 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2558 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) { 2559 goto error; 2560 } 2561 2562 /* T.B.D. Decread noise packet number, delete in the future */ 2563 if (alps_exit_command_mode(psmouse) || 2564 alps_enter_command_mode(psmouse) || 2565 alps_command_mode_write_reg(psmouse, 0x001D, 0x20)) { 2566 goto error; 2567 } 2568 alps_exit_command_mode(psmouse); 2569 2570 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2571 2572 error: 2573 alps_exit_command_mode(psmouse); 2574 return ret; 2575 } 2576 2577 static int alps_set_protocol(struct psmouse *psmouse, 2578 struct alps_data *priv, 2579 const struct alps_protocol_info *protocol) 2580 { 2581 psmouse->private = priv; 2582 2583 setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse); 2584 2585 priv->proto_version = protocol->version; 2586 priv->byte0 = protocol->byte0; 2587 priv->mask0 = protocol->mask0; 2588 priv->flags = protocol->flags; 2589 2590 priv->x_max = 2000; 2591 priv->y_max = 1400; 2592 priv->x_bits = 15; 2593 priv->y_bits = 11; 2594 2595 switch (priv->proto_version) { 2596 case ALPS_PROTO_V1: 2597 case ALPS_PROTO_V2: 2598 priv->hw_init = alps_hw_init_v1_v2; 2599 priv->process_packet = alps_process_packet_v1_v2; 2600 priv->set_abs_params = alps_set_abs_params_st; 2601 priv->x_max = 1023; 2602 priv->y_max = 767; 2603 if (dmi_check_system(alps_dmi_has_separate_stick_buttons)) 2604 priv->flags |= ALPS_STICK_BITS; 2605 break; 2606 2607 case ALPS_PROTO_V3: 2608 priv->hw_init = alps_hw_init_v3; 2609 priv->process_packet = alps_process_packet_v3; 2610 priv->set_abs_params = alps_set_abs_params_semi_mt; 2611 priv->decode_fields = alps_decode_pinnacle; 2612 priv->nibble_commands = alps_v3_nibble_commands; 2613 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2614 2615 if (alps_probe_trackstick_v3_v7(psmouse, 2616 ALPS_REG_BASE_PINNACLE) < 0) 2617 priv->flags &= ~ALPS_DUALPOINT; 2618 2619 break; 2620 2621 case ALPS_PROTO_V3_RUSHMORE: 2622 priv->hw_init = alps_hw_init_rushmore_v3; 2623 priv->process_packet = alps_process_packet_v3; 2624 priv->set_abs_params = alps_set_abs_params_semi_mt; 2625 priv->decode_fields = alps_decode_rushmore; 2626 priv->nibble_commands = alps_v3_nibble_commands; 2627 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2628 priv->x_bits = 16; 2629 priv->y_bits = 12; 2630 2631 if (alps_probe_trackstick_v3_v7(psmouse, 2632 ALPS_REG_BASE_RUSHMORE) < 0) 2633 priv->flags &= ~ALPS_DUALPOINT; 2634 2635 break; 2636 2637 case ALPS_PROTO_V4: 2638 priv->hw_init = alps_hw_init_v4; 2639 priv->process_packet = alps_process_packet_v4; 2640 priv->set_abs_params = alps_set_abs_params_semi_mt; 2641 priv->nibble_commands = alps_v4_nibble_commands; 2642 priv->addr_command = PSMOUSE_CMD_DISABLE; 2643 break; 2644 2645 case ALPS_PROTO_V5: 2646 priv->hw_init = alps_hw_init_dolphin_v1; 2647 priv->process_packet = alps_process_touchpad_packet_v3_v5; 2648 priv->decode_fields = alps_decode_dolphin; 2649 priv->set_abs_params = alps_set_abs_params_semi_mt; 2650 priv->nibble_commands = alps_v3_nibble_commands; 2651 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2652 priv->x_bits = 23; 2653 priv->y_bits = 12; 2654 2655 if (alps_dolphin_get_device_area(psmouse, priv)) 2656 return -EIO; 2657 2658 break; 2659 2660 case ALPS_PROTO_V6: 2661 priv->hw_init = alps_hw_init_v6; 2662 priv->process_packet = alps_process_packet_v6; 2663 priv->set_abs_params = alps_set_abs_params_st; 2664 priv->nibble_commands = alps_v6_nibble_commands; 2665 priv->x_max = 2047; 2666 priv->y_max = 1535; 2667 break; 2668 2669 case ALPS_PROTO_V7: 2670 priv->hw_init = alps_hw_init_v7; 2671 priv->process_packet = alps_process_packet_v7; 2672 priv->decode_fields = alps_decode_packet_v7; 2673 priv->set_abs_params = alps_set_abs_params_v7; 2674 priv->nibble_commands = alps_v3_nibble_commands; 2675 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2676 priv->x_max = 0xfff; 2677 priv->y_max = 0x7ff; 2678 2679 if (priv->fw_ver[1] != 0xba) 2680 priv->flags |= ALPS_BUTTONPAD; 2681 2682 if (alps_probe_trackstick_v3_v7(psmouse, ALPS_REG_BASE_V7) < 0) 2683 priv->flags &= ~ALPS_DUALPOINT; 2684 2685 break; 2686 2687 case ALPS_PROTO_V8: 2688 priv->hw_init = alps_hw_init_ss4_v2; 2689 priv->process_packet = alps_process_packet_ss4_v2; 2690 priv->decode_fields = alps_decode_ss4_v2; 2691 priv->set_abs_params = alps_set_abs_params_ss4_v2; 2692 priv->nibble_commands = alps_v3_nibble_commands; 2693 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2694 2695 if (alps_set_defaults_ss4_v2(psmouse, priv)) 2696 return -EIO; 2697 2698 break; 2699 } 2700 2701 return 0; 2702 } 2703 2704 static const struct alps_protocol_info *alps_match_table(unsigned char *e7, 2705 unsigned char *ec) 2706 { 2707 const struct alps_model_info *model; 2708 int i; 2709 2710 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) { 2711 model = &alps_model_data[i]; 2712 2713 if (!memcmp(e7, model->signature, sizeof(model->signature)) && 2714 (!model->command_mode_resp || 2715 model->command_mode_resp == ec[2])) { 2716 2717 return &model->protocol_info; 2718 } 2719 } 2720 2721 return NULL; 2722 } 2723 2724 static int alps_identify(struct psmouse *psmouse, struct alps_data *priv) 2725 { 2726 const struct alps_protocol_info *protocol; 2727 unsigned char e6[4], e7[4], ec[4]; 2728 int error; 2729 2730 /* 2731 * First try "E6 report". 2732 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed. 2733 * The bits 0-2 of the first byte will be 1s if some buttons are 2734 * pressed. 2735 */ 2736 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2737 PSMOUSE_CMD_SETSCALE11, e6)) 2738 return -EIO; 2739 2740 if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100)) 2741 return -EINVAL; 2742 2743 /* 2744 * Now get the "E7" and "EC" reports. These will uniquely identify 2745 * most ALPS touchpads. 2746 */ 2747 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2748 PSMOUSE_CMD_SETSCALE21, e7) || 2749 alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2750 PSMOUSE_CMD_RESET_WRAP, ec) || 2751 alps_exit_command_mode(psmouse)) 2752 return -EIO; 2753 2754 protocol = alps_match_table(e7, ec); 2755 if (!protocol) { 2756 if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 && 2757 ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) { 2758 protocol = &alps_v5_protocol_data; 2759 } else if (ec[0] == 0x88 && 2760 ((ec[1] & 0xf0) == 0xb0 || (ec[1] & 0xf0) == 0xc0)) { 2761 protocol = &alps_v7_protocol_data; 2762 } else if (ec[0] == 0x88 && ec[1] == 0x08) { 2763 protocol = &alps_v3_rushmore_data; 2764 } else if (ec[0] == 0x88 && ec[1] == 0x07 && 2765 ec[2] >= 0x90 && ec[2] <= 0x9d) { 2766 protocol = &alps_v3_protocol_data; 2767 } else if (e7[0] == 0x73 && e7[1] == 0x03 && 2768 e7[2] == 0x14 && ec[1] == 0x02) { 2769 protocol = &alps_v8_protocol_data; 2770 } else { 2771 psmouse_dbg(psmouse, 2772 "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec); 2773 return -EINVAL; 2774 } 2775 } 2776 2777 if (priv) { 2778 /* Save the Firmware version */ 2779 memcpy(priv->fw_ver, ec, 3); 2780 error = alps_set_protocol(psmouse, priv, protocol); 2781 if (error) 2782 return error; 2783 } 2784 2785 return 0; 2786 } 2787 2788 static int alps_reconnect(struct psmouse *psmouse) 2789 { 2790 struct alps_data *priv = psmouse->private; 2791 2792 psmouse_reset(psmouse); 2793 2794 if (alps_identify(psmouse, priv) < 0) 2795 return -1; 2796 2797 return priv->hw_init(psmouse); 2798 } 2799 2800 static void alps_disconnect(struct psmouse *psmouse) 2801 { 2802 struct alps_data *priv = psmouse->private; 2803 2804 psmouse_reset(psmouse); 2805 del_timer_sync(&priv->timer); 2806 if (priv->dev2) 2807 input_unregister_device(priv->dev2); 2808 if (!IS_ERR_OR_NULL(priv->dev3)) 2809 input_unregister_device(priv->dev3); 2810 kfree(priv); 2811 } 2812 2813 static void alps_set_abs_params_st(struct alps_data *priv, 2814 struct input_dev *dev1) 2815 { 2816 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0); 2817 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0); 2818 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2819 } 2820 2821 static void alps_set_abs_params_mt_common(struct alps_data *priv, 2822 struct input_dev *dev1) 2823 { 2824 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0); 2825 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0); 2826 2827 input_abs_set_res(dev1, ABS_MT_POSITION_X, priv->x_res); 2828 input_abs_set_res(dev1, ABS_MT_POSITION_Y, priv->y_res); 2829 2830 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit); 2831 set_bit(BTN_TOOL_QUADTAP, dev1->keybit); 2832 } 2833 2834 static void alps_set_abs_params_semi_mt(struct alps_data *priv, 2835 struct input_dev *dev1) 2836 { 2837 alps_set_abs_params_mt_common(priv, dev1); 2838 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2839 2840 input_mt_init_slots(dev1, MAX_TOUCHES, 2841 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 2842 INPUT_MT_SEMI_MT); 2843 } 2844 2845 static void alps_set_abs_params_v7(struct alps_data *priv, 2846 struct input_dev *dev1) 2847 { 2848 alps_set_abs_params_mt_common(priv, dev1); 2849 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2850 2851 input_mt_init_slots(dev1, MAX_TOUCHES, 2852 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 2853 INPUT_MT_TRACK); 2854 2855 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2856 } 2857 2858 static void alps_set_abs_params_ss4_v2(struct alps_data *priv, 2859 struct input_dev *dev1) 2860 { 2861 alps_set_abs_params_mt_common(priv, dev1); 2862 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2863 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2864 2865 input_mt_init_slots(dev1, MAX_TOUCHES, 2866 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 2867 INPUT_MT_TRACK); 2868 } 2869 2870 int alps_init(struct psmouse *psmouse) 2871 { 2872 struct alps_data *priv = psmouse->private; 2873 struct input_dev *dev1 = psmouse->dev; 2874 int error; 2875 2876 error = priv->hw_init(psmouse); 2877 if (error) 2878 goto init_fail; 2879 2880 /* 2881 * Undo part of setup done for us by psmouse core since touchpad 2882 * is not a relative device. 2883 */ 2884 __clear_bit(EV_REL, dev1->evbit); 2885 __clear_bit(REL_X, dev1->relbit); 2886 __clear_bit(REL_Y, dev1->relbit); 2887 2888 /* 2889 * Now set up our capabilities. 2890 */ 2891 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY); 2892 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH); 2893 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER); 2894 dev1->keybit[BIT_WORD(BTN_LEFT)] |= 2895 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); 2896 2897 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS); 2898 2899 priv->set_abs_params(priv, dev1); 2900 2901 if (priv->flags & ALPS_WHEEL) { 2902 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL); 2903 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL); 2904 } 2905 2906 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 2907 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD); 2908 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK); 2909 } 2910 2911 if (priv->flags & ALPS_FOUR_BUTTONS) { 2912 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0); 2913 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1); 2914 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2); 2915 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3); 2916 } else if (priv->flags & ALPS_BUTTONPAD) { 2917 set_bit(INPUT_PROP_BUTTONPAD, dev1->propbit); 2918 clear_bit(BTN_RIGHT, dev1->keybit); 2919 } else { 2920 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE); 2921 } 2922 2923 if (priv->flags & ALPS_DUALPOINT) { 2924 struct input_dev *dev2; 2925 2926 dev2 = input_allocate_device(); 2927 if (!dev2) { 2928 psmouse_err(psmouse, 2929 "failed to allocate trackstick device\n"); 2930 error = -ENOMEM; 2931 goto init_fail; 2932 } 2933 2934 snprintf(priv->phys2, sizeof(priv->phys2), "%s/input1", 2935 psmouse->ps2dev.serio->phys); 2936 dev2->phys = priv->phys2; 2937 2938 /* 2939 * format of input device name is: "protocol vendor name" 2940 * see function psmouse_switch_protocol() in psmouse-base.c 2941 */ 2942 dev2->name = "AlpsPS/2 ALPS DualPoint Stick"; 2943 2944 dev2->id.bustype = BUS_I8042; 2945 dev2->id.vendor = 0x0002; 2946 dev2->id.product = PSMOUSE_ALPS; 2947 dev2->id.version = priv->proto_version; 2948 dev2->dev.parent = &psmouse->ps2dev.serio->dev; 2949 2950 input_set_capability(dev2, EV_REL, REL_X); 2951 input_set_capability(dev2, EV_REL, REL_Y); 2952 input_set_capability(dev2, EV_KEY, BTN_LEFT); 2953 input_set_capability(dev2, EV_KEY, BTN_RIGHT); 2954 input_set_capability(dev2, EV_KEY, BTN_MIDDLE); 2955 2956 __set_bit(INPUT_PROP_POINTER, dev2->propbit); 2957 __set_bit(INPUT_PROP_POINTING_STICK, dev2->propbit); 2958 2959 error = input_register_device(dev2); 2960 if (error) { 2961 psmouse_err(psmouse, 2962 "failed to register trackstick device: %d\n", 2963 error); 2964 input_free_device(dev2); 2965 goto init_fail; 2966 } 2967 2968 priv->dev2 = dev2; 2969 } 2970 2971 priv->psmouse = psmouse; 2972 2973 INIT_DELAYED_WORK(&priv->dev3_register_work, 2974 alps_register_bare_ps2_mouse); 2975 2976 psmouse->protocol_handler = alps_process_byte; 2977 psmouse->poll = alps_poll; 2978 psmouse->disconnect = alps_disconnect; 2979 psmouse->reconnect = alps_reconnect; 2980 psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6; 2981 2982 /* We are having trouble resyncing ALPS touchpads so disable it for now */ 2983 psmouse->resync_time = 0; 2984 2985 /* Allow 2 invalid packets without resetting device */ 2986 psmouse->resetafter = psmouse->pktsize * 2; 2987 2988 return 0; 2989 2990 init_fail: 2991 psmouse_reset(psmouse); 2992 /* 2993 * Even though we did not allocate psmouse->private we do free 2994 * it here. 2995 */ 2996 kfree(psmouse->private); 2997 psmouse->private = NULL; 2998 return error; 2999 } 3000 3001 int alps_detect(struct psmouse *psmouse, bool set_properties) 3002 { 3003 struct alps_data *priv; 3004 int error; 3005 3006 error = alps_identify(psmouse, NULL); 3007 if (error) 3008 return error; 3009 3010 /* 3011 * Reset the device to make sure it is fully operational: 3012 * on some laptops, like certain Dell Latitudes, we may 3013 * fail to properly detect presence of trackstick if device 3014 * has not been reset. 3015 */ 3016 psmouse_reset(psmouse); 3017 3018 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL); 3019 if (!priv) 3020 return -ENOMEM; 3021 3022 error = alps_identify(psmouse, priv); 3023 if (error) { 3024 kfree(priv); 3025 return error; 3026 } 3027 3028 if (set_properties) { 3029 psmouse->vendor = "ALPS"; 3030 psmouse->name = priv->flags & ALPS_DUALPOINT ? 3031 "DualPoint TouchPad" : "GlidePoint"; 3032 psmouse->model = priv->proto_version; 3033 } else { 3034 /* 3035 * Destroy alps_data structure we allocated earlier since 3036 * this was just a "trial run". Otherwise we'll keep it 3037 * to be used by alps_init() which has to be called if 3038 * we succeed and set_properties is true. 3039 */ 3040 kfree(priv); 3041 psmouse->private = NULL; 3042 } 3043 3044 return 0; 3045 } 3046 3047