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 #define ALPS_DUALPOINT_WITH_PRESSURE 0x400 /* device can report trackpoint pressure */ 107 108 static const struct alps_model_info alps_model_data[] = { 109 { { 0x32, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Toshiba Salellite Pro M10 */ 110 { { 0x33, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V1, 0x88, 0xf8, 0 } }, /* UMAX-530T */ 111 { { 0x53, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 112 { { 0x53, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 113 { { 0x60, 0x03, 0xc8 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, /* HP ze1115 */ 114 { { 0x63, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 115 { { 0x63, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 116 { { 0x63, 0x02, 0x28 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Fujitsu Siemens S6010 */ 117 { { 0x63, 0x02, 0x3c }, 0x00, { ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL } }, /* Toshiba Satellite S2400-103 */ 118 { { 0x63, 0x02, 0x50 }, 0x00, { ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 } }, /* NEC Versa L320 */ 119 { { 0x63, 0x02, 0x64 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 120 { { 0x63, 0x03, 0xc8 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D800 */ 121 { { 0x73, 0x00, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT } }, /* ThinkPad R61 8918-5QG */ 122 { { 0x73, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 123 { { 0x73, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Ahtec Laptop */ 124 125 /* 126 * XXX This entry is suspicious. First byte has zero lower nibble, 127 * which is what a normal mouse would report. Also, the value 0x0e 128 * isn't valid per PS/2 spec. 129 */ 130 { { 0x20, 0x02, 0x0e }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, 131 132 { { 0x22, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, 133 { { 0x22, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D600 */ 134 /* Dell Latitude E5500, E6400, E6500, Precision M4400 */ 135 { { 0x62, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xcf, 0xcf, 136 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, 137 { { 0x73, 0x00, 0x14 }, 0x00, { ALPS_PROTO_V6, 0xff, 0xff, ALPS_DUALPOINT } }, /* Dell XT2 */ 138 { { 0x73, 0x02, 0x50 }, 0x00, { ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS } }, /* Dell Vostro 1400 */ 139 { { 0x52, 0x01, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff, 140 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, /* Toshiba Tecra A11-11L */ 141 { { 0x73, 0x02, 0x64 }, 0x8a, { ALPS_PROTO_V4, 0x8f, 0x8f, 0 } }, 142 }; 143 144 static const struct alps_protocol_info alps_v3_protocol_data = { 145 ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT 146 }; 147 148 static const struct alps_protocol_info alps_v3_rushmore_data = { 149 ALPS_PROTO_V3_RUSHMORE, 0x8f, 0x8f, ALPS_DUALPOINT 150 }; 151 152 static const struct alps_protocol_info alps_v5_protocol_data = { 153 ALPS_PROTO_V5, 0xc8, 0xd8, 0 154 }; 155 156 static const struct alps_protocol_info alps_v7_protocol_data = { 157 ALPS_PROTO_V7, 0x48, 0x48, ALPS_DUALPOINT 158 }; 159 160 static const struct alps_protocol_info alps_v8_protocol_data = { 161 ALPS_PROTO_V8, 0x18, 0x18, 0 162 }; 163 164 /* 165 * Some v2 models report the stick buttons in separate bits 166 */ 167 static const struct dmi_system_id alps_dmi_has_separate_stick_buttons[] = { 168 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 169 { 170 /* Extrapolated from other entries */ 171 .matches = { 172 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 173 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D420"), 174 }, 175 }, 176 { 177 /* Reported-by: Hans de Bruin <jmdebruin@xmsnet.nl> */ 178 .matches = { 179 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 180 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D430"), 181 }, 182 }, 183 { 184 /* Reported-by: Hans de Goede <hdegoede@redhat.com> */ 185 .matches = { 186 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 187 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D620"), 188 }, 189 }, 190 { 191 /* Extrapolated from other entries */ 192 .matches = { 193 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 194 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D630"), 195 }, 196 }, 197 #endif 198 { } 199 }; 200 201 static void alps_set_abs_params_st(struct alps_data *priv, 202 struct input_dev *dev1); 203 static void alps_set_abs_params_semi_mt(struct alps_data *priv, 204 struct input_dev *dev1); 205 static void alps_set_abs_params_v7(struct alps_data *priv, 206 struct input_dev *dev1); 207 static void alps_set_abs_params_ss4_v2(struct alps_data *priv, 208 struct input_dev *dev1); 209 210 /* Packet formats are described in Documentation/input/alps.txt */ 211 212 static bool alps_is_valid_first_byte(struct alps_data *priv, 213 unsigned char data) 214 { 215 return (data & priv->mask0) == priv->byte0; 216 } 217 218 static void alps_report_buttons(struct input_dev *dev1, struct input_dev *dev2, 219 int left, int right, int middle) 220 { 221 struct input_dev *dev; 222 223 /* 224 * If shared button has already been reported on the 225 * other device (dev2) then this event should be also 226 * sent through that device. 227 */ 228 dev = (dev2 && test_bit(BTN_LEFT, dev2->key)) ? dev2 : dev1; 229 input_report_key(dev, BTN_LEFT, left); 230 231 dev = (dev2 && test_bit(BTN_RIGHT, dev2->key)) ? dev2 : dev1; 232 input_report_key(dev, BTN_RIGHT, right); 233 234 dev = (dev2 && test_bit(BTN_MIDDLE, dev2->key)) ? dev2 : dev1; 235 input_report_key(dev, BTN_MIDDLE, middle); 236 237 /* 238 * Sync the _other_ device now, we'll do the first 239 * device later once we report the rest of the events. 240 */ 241 if (dev2) 242 input_sync(dev2); 243 } 244 245 static void alps_process_packet_v1_v2(struct psmouse *psmouse) 246 { 247 struct alps_data *priv = psmouse->private; 248 unsigned char *packet = psmouse->packet; 249 struct input_dev *dev = psmouse->dev; 250 struct input_dev *dev2 = priv->dev2; 251 int x, y, z, ges, fin, left, right, middle; 252 int back = 0, forward = 0; 253 254 if (priv->proto_version == ALPS_PROTO_V1) { 255 left = packet[2] & 0x10; 256 right = packet[2] & 0x08; 257 middle = 0; 258 x = packet[1] | ((packet[0] & 0x07) << 7); 259 y = packet[4] | ((packet[3] & 0x07) << 7); 260 z = packet[5]; 261 } else { 262 left = packet[3] & 1; 263 right = packet[3] & 2; 264 middle = packet[3] & 4; 265 x = packet[1] | ((packet[2] & 0x78) << (7 - 3)); 266 y = packet[4] | ((packet[3] & 0x70) << (7 - 4)); 267 z = packet[5]; 268 } 269 270 if (priv->flags & ALPS_FW_BK_1) { 271 back = packet[0] & 0x10; 272 forward = packet[2] & 4; 273 } 274 275 if (priv->flags & ALPS_FW_BK_2) { 276 back = packet[3] & 4; 277 forward = packet[2] & 4; 278 if ((middle = forward && back)) 279 forward = back = 0; 280 } 281 282 ges = packet[2] & 1; 283 fin = packet[2] & 2; 284 285 if ((priv->flags & ALPS_DUALPOINT) && z == 127) { 286 input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x)); 287 input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y)); 288 289 alps_report_buttons(dev2, dev, left, right, middle); 290 291 input_sync(dev2); 292 return; 293 } 294 295 /* Some models have separate stick button bits */ 296 if (priv->flags & ALPS_STICK_BITS) { 297 left |= packet[0] & 1; 298 right |= packet[0] & 2; 299 middle |= packet[0] & 4; 300 } 301 302 alps_report_buttons(dev, dev2, left, right, middle); 303 304 /* Convert hardware tap to a reasonable Z value */ 305 if (ges && !fin) 306 z = 40; 307 308 /* 309 * A "tap and drag" operation is reported by the hardware as a transition 310 * from (!fin && ges) to (fin && ges). This should be translated to the 311 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually. 312 */ 313 if (ges && fin && !priv->prev_fin) { 314 input_report_abs(dev, ABS_X, x); 315 input_report_abs(dev, ABS_Y, y); 316 input_report_abs(dev, ABS_PRESSURE, 0); 317 input_report_key(dev, BTN_TOOL_FINGER, 0); 318 input_sync(dev); 319 } 320 priv->prev_fin = fin; 321 322 if (z > 30) 323 input_report_key(dev, BTN_TOUCH, 1); 324 if (z < 25) 325 input_report_key(dev, BTN_TOUCH, 0); 326 327 if (z > 0) { 328 input_report_abs(dev, ABS_X, x); 329 input_report_abs(dev, ABS_Y, y); 330 } 331 332 input_report_abs(dev, ABS_PRESSURE, z); 333 input_report_key(dev, BTN_TOOL_FINGER, z > 0); 334 335 if (priv->flags & ALPS_WHEEL) 336 input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07)); 337 338 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 339 input_report_key(dev, BTN_FORWARD, forward); 340 input_report_key(dev, BTN_BACK, back); 341 } 342 343 if (priv->flags & ALPS_FOUR_BUTTONS) { 344 input_report_key(dev, BTN_0, packet[2] & 4); 345 input_report_key(dev, BTN_1, packet[0] & 0x10); 346 input_report_key(dev, BTN_2, packet[3] & 4); 347 input_report_key(dev, BTN_3, packet[0] & 0x20); 348 } 349 350 input_sync(dev); 351 } 352 353 static void alps_get_bitmap_points(unsigned int map, 354 struct alps_bitmap_point *low, 355 struct alps_bitmap_point *high, 356 int *fingers) 357 { 358 struct alps_bitmap_point *point; 359 int i, bit, prev_bit = 0; 360 361 point = low; 362 for (i = 0; map != 0; i++, map >>= 1) { 363 bit = map & 1; 364 if (bit) { 365 if (!prev_bit) { 366 point->start_bit = i; 367 point->num_bits = 0; 368 (*fingers)++; 369 } 370 point->num_bits++; 371 } else { 372 if (prev_bit) 373 point = high; 374 } 375 prev_bit = bit; 376 } 377 } 378 379 /* 380 * Process bitmap data from semi-mt protocols. Returns the number of 381 * fingers detected. A return value of 0 means at least one of the 382 * bitmaps was empty. 383 * 384 * The bitmaps don't have enough data to track fingers, so this function 385 * only generates points representing a bounding box of all contacts. 386 * These points are returned in fields->mt when the return value 387 * is greater than 0. 388 */ 389 static int alps_process_bitmap(struct alps_data *priv, 390 struct alps_fields *fields) 391 { 392 int i, fingers_x = 0, fingers_y = 0, fingers, closest; 393 struct alps_bitmap_point x_low = {0,}, x_high = {0,}; 394 struct alps_bitmap_point y_low = {0,}, y_high = {0,}; 395 struct input_mt_pos corner[4]; 396 397 if (!fields->x_map || !fields->y_map) 398 return 0; 399 400 alps_get_bitmap_points(fields->x_map, &x_low, &x_high, &fingers_x); 401 alps_get_bitmap_points(fields->y_map, &y_low, &y_high, &fingers_y); 402 403 /* 404 * Fingers can overlap, so we use the maximum count of fingers 405 * on either axis as the finger count. 406 */ 407 fingers = max(fingers_x, fingers_y); 408 409 /* 410 * If an axis reports only a single contact, we have overlapping or 411 * adjacent fingers. Divide the single contact between the two points. 412 */ 413 if (fingers_x == 1) { 414 i = (x_low.num_bits - 1) / 2; 415 x_low.num_bits = x_low.num_bits - i; 416 x_high.start_bit = x_low.start_bit + i; 417 x_high.num_bits = max(i, 1); 418 } 419 if (fingers_y == 1) { 420 i = (y_low.num_bits - 1) / 2; 421 y_low.num_bits = y_low.num_bits - i; 422 y_high.start_bit = y_low.start_bit + i; 423 y_high.num_bits = max(i, 1); 424 } 425 426 /* top-left corner */ 427 corner[0].x = 428 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) / 429 (2 * (priv->x_bits - 1)); 430 corner[0].y = 431 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) / 432 (2 * (priv->y_bits - 1)); 433 434 /* top-right corner */ 435 corner[1].x = 436 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) / 437 (2 * (priv->x_bits - 1)); 438 corner[1].y = 439 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) / 440 (2 * (priv->y_bits - 1)); 441 442 /* bottom-right corner */ 443 corner[2].x = 444 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) / 445 (2 * (priv->x_bits - 1)); 446 corner[2].y = 447 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) / 448 (2 * (priv->y_bits - 1)); 449 450 /* bottom-left corner */ 451 corner[3].x = 452 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) / 453 (2 * (priv->x_bits - 1)); 454 corner[3].y = 455 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) / 456 (2 * (priv->y_bits - 1)); 457 458 /* x-bitmap order is reversed on v5 touchpads */ 459 if (priv->proto_version == ALPS_PROTO_V5) { 460 for (i = 0; i < 4; i++) 461 corner[i].x = priv->x_max - corner[i].x; 462 } 463 464 /* y-bitmap order is reversed on v3 and v4 touchpads */ 465 if (priv->proto_version == ALPS_PROTO_V3 || 466 priv->proto_version == ALPS_PROTO_V4) { 467 for (i = 0; i < 4; i++) 468 corner[i].y = priv->y_max - corner[i].y; 469 } 470 471 /* 472 * We only select a corner for the second touch once per 2 finger 473 * touch sequence to avoid the chosen corner (and thus the coordinates) 474 * jumping around when the first touch is in the middle. 475 */ 476 if (priv->second_touch == -1) { 477 /* Find corner closest to our st coordinates */ 478 closest = 0x7fffffff; 479 for (i = 0; i < 4; i++) { 480 int dx = fields->st.x - corner[i].x; 481 int dy = fields->st.y - corner[i].y; 482 int distance = dx * dx + dy * dy; 483 484 if (distance < closest) { 485 priv->second_touch = i; 486 closest = distance; 487 } 488 } 489 /* And select the opposite corner to use for the 2nd touch */ 490 priv->second_touch = (priv->second_touch + 2) % 4; 491 } 492 493 fields->mt[0] = fields->st; 494 fields->mt[1] = corner[priv->second_touch]; 495 496 return fingers; 497 } 498 499 static void alps_set_slot(struct input_dev *dev, int slot, int x, int y) 500 { 501 input_mt_slot(dev, slot); 502 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); 503 input_report_abs(dev, ABS_MT_POSITION_X, x); 504 input_report_abs(dev, ABS_MT_POSITION_Y, y); 505 } 506 507 static void alps_report_mt_data(struct psmouse *psmouse, int n) 508 { 509 struct alps_data *priv = psmouse->private; 510 struct input_dev *dev = psmouse->dev; 511 struct alps_fields *f = &priv->f; 512 int i, slot[MAX_TOUCHES]; 513 514 input_mt_assign_slots(dev, slot, f->mt, n, 0); 515 for (i = 0; i < n; i++) 516 alps_set_slot(dev, slot[i], f->mt[i].x, f->mt[i].y); 517 518 input_mt_sync_frame(dev); 519 } 520 521 static void alps_report_semi_mt_data(struct psmouse *psmouse, int fingers) 522 { 523 struct alps_data *priv = psmouse->private; 524 struct input_dev *dev = psmouse->dev; 525 struct alps_fields *f = &priv->f; 526 527 /* Use st data when we don't have mt data */ 528 if (fingers < 2) { 529 f->mt[0].x = f->st.x; 530 f->mt[0].y = f->st.y; 531 fingers = f->pressure > 0 ? 1 : 0; 532 priv->second_touch = -1; 533 } 534 535 if (fingers >= 1) 536 alps_set_slot(dev, 0, f->mt[0].x, f->mt[0].y); 537 if (fingers >= 2) 538 alps_set_slot(dev, 1, f->mt[1].x, f->mt[1].y); 539 input_mt_sync_frame(dev); 540 541 input_mt_report_finger_count(dev, fingers); 542 543 input_report_key(dev, BTN_LEFT, f->left); 544 input_report_key(dev, BTN_RIGHT, f->right); 545 input_report_key(dev, BTN_MIDDLE, f->middle); 546 547 input_report_abs(dev, ABS_PRESSURE, f->pressure); 548 549 input_sync(dev); 550 } 551 552 static void alps_process_trackstick_packet_v3(struct psmouse *psmouse) 553 { 554 struct alps_data *priv = psmouse->private; 555 unsigned char *packet = psmouse->packet; 556 struct input_dev *dev = priv->dev2; 557 int x, y, z, left, right, middle; 558 559 /* It should be a DualPoint when received trackstick packet */ 560 if (!(priv->flags & ALPS_DUALPOINT)) { 561 psmouse_warn(psmouse, 562 "Rejected trackstick packet from non DualPoint device"); 563 return; 564 } 565 566 /* Sanity check packet */ 567 if (!(packet[0] & 0x40)) { 568 psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n"); 569 return; 570 } 571 572 /* 573 * There's a special packet that seems to indicate the end 574 * of a stream of trackstick data. Filter these out. 575 */ 576 if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f) 577 return; 578 579 x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f)); 580 y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f)); 581 z = (packet[4] & 0x7c) >> 2; 582 583 /* 584 * The x and y values tend to be quite large, and when used 585 * alone the trackstick is difficult to use. Scale them down 586 * to compensate. 587 */ 588 x /= 8; 589 y /= 8; 590 591 input_report_rel(dev, REL_X, x); 592 input_report_rel(dev, REL_Y, -y); 593 594 /* 595 * Most ALPS models report the trackstick buttons in the touchpad 596 * packets, but a few report them here. No reliable way has been 597 * found to differentiate between the models upfront, so we enable 598 * the quirk in response to seeing a button press in the trackstick 599 * packet. 600 */ 601 left = packet[3] & 0x01; 602 right = packet[3] & 0x02; 603 middle = packet[3] & 0x04; 604 605 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) && 606 (left || right || middle)) 607 priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS; 608 609 if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) { 610 input_report_key(dev, BTN_LEFT, left); 611 input_report_key(dev, BTN_RIGHT, right); 612 input_report_key(dev, BTN_MIDDLE, middle); 613 } 614 615 input_sync(dev); 616 return; 617 } 618 619 static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p) 620 { 621 f->left = !!(p[3] & 0x01); 622 f->right = !!(p[3] & 0x02); 623 f->middle = !!(p[3] & 0x04); 624 625 f->ts_left = !!(p[3] & 0x10); 626 f->ts_right = !!(p[3] & 0x20); 627 f->ts_middle = !!(p[3] & 0x40); 628 } 629 630 static int alps_decode_pinnacle(struct alps_fields *f, unsigned char *p, 631 struct psmouse *psmouse) 632 { 633 f->first_mp = !!(p[4] & 0x40); 634 f->is_mp = !!(p[0] & 0x40); 635 636 if (f->is_mp) { 637 f->fingers = (p[5] & 0x3) + 1; 638 f->x_map = ((p[4] & 0x7e) << 8) | 639 ((p[1] & 0x7f) << 2) | 640 ((p[0] & 0x30) >> 4); 641 f->y_map = ((p[3] & 0x70) << 4) | 642 ((p[2] & 0x7f) << 1) | 643 (p[4] & 0x01); 644 } else { 645 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | 646 ((p[0] & 0x30) >> 4); 647 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); 648 f->pressure = p[5] & 0x7f; 649 650 alps_decode_buttons_v3(f, p); 651 } 652 653 return 0; 654 } 655 656 static int alps_decode_rushmore(struct alps_fields *f, unsigned char *p, 657 struct psmouse *psmouse) 658 { 659 f->first_mp = !!(p[4] & 0x40); 660 f->is_mp = !!(p[5] & 0x40); 661 662 if (f->is_mp) { 663 f->fingers = max((p[5] & 0x3), ((p[5] >> 2) & 0x3)) + 1; 664 f->x_map = ((p[5] & 0x10) << 11) | 665 ((p[4] & 0x7e) << 8) | 666 ((p[1] & 0x7f) << 2) | 667 ((p[0] & 0x30) >> 4); 668 f->y_map = ((p[5] & 0x20) << 6) | 669 ((p[3] & 0x70) << 4) | 670 ((p[2] & 0x7f) << 1) | 671 (p[4] & 0x01); 672 } else { 673 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | 674 ((p[0] & 0x30) >> 4); 675 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); 676 f->pressure = p[5] & 0x7f; 677 678 alps_decode_buttons_v3(f, p); 679 } 680 681 return 0; 682 } 683 684 static int alps_decode_dolphin(struct alps_fields *f, unsigned char *p, 685 struct psmouse *psmouse) 686 { 687 u64 palm_data = 0; 688 struct alps_data *priv = psmouse->private; 689 690 f->first_mp = !!(p[0] & 0x02); 691 f->is_mp = !!(p[0] & 0x20); 692 693 if (!f->is_mp) { 694 f->st.x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7)); 695 f->st.y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3)); 696 f->pressure = (p[0] & 4) ? 0 : p[5] & 0x7f; 697 alps_decode_buttons_v3(f, p); 698 } else { 699 f->fingers = ((p[0] & 0x6) >> 1 | 700 (p[0] & 0x10) >> 2); 701 702 palm_data = (p[1] & 0x7f) | 703 ((p[2] & 0x7f) << 7) | 704 ((p[4] & 0x7f) << 14) | 705 ((p[5] & 0x7f) << 21) | 706 ((p[3] & 0x07) << 28) | 707 (((u64)p[3] & 0x70) << 27) | 708 (((u64)p[0] & 0x01) << 34); 709 710 /* Y-profile is stored in P(0) to p(n-1), n = y_bits; */ 711 f->y_map = palm_data & (BIT(priv->y_bits) - 1); 712 713 /* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */ 714 f->x_map = (palm_data >> priv->y_bits) & 715 (BIT(priv->x_bits) - 1); 716 } 717 718 return 0; 719 } 720 721 static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse) 722 { 723 struct alps_data *priv = psmouse->private; 724 unsigned char *packet = psmouse->packet; 725 struct input_dev *dev2 = priv->dev2; 726 struct alps_fields *f = &priv->f; 727 int fingers = 0; 728 729 memset(f, 0, sizeof(*f)); 730 731 priv->decode_fields(f, packet, psmouse); 732 733 /* 734 * There's no single feature of touchpad position and bitmap packets 735 * that can be used to distinguish between them. We rely on the fact 736 * that a bitmap packet should always follow a position packet with 737 * bit 6 of packet[4] set. 738 */ 739 if (priv->multi_packet) { 740 /* 741 * Sometimes a position packet will indicate a multi-packet 742 * sequence, but then what follows is another position 743 * packet. Check for this, and when it happens process the 744 * position packet as usual. 745 */ 746 if (f->is_mp) { 747 fingers = f->fingers; 748 /* 749 * Bitmap processing uses position packet's coordinate 750 * data, so we need to do decode it first. 751 */ 752 priv->decode_fields(f, priv->multi_data, psmouse); 753 if (alps_process_bitmap(priv, f) == 0) 754 fingers = 0; /* Use st data */ 755 } else { 756 priv->multi_packet = 0; 757 } 758 } 759 760 /* 761 * Bit 6 of byte 0 is not usually set in position packets. The only 762 * times it seems to be set is in situations where the data is 763 * suspect anyway, e.g. a palm resting flat on the touchpad. Given 764 * this combined with the fact that this bit is useful for filtering 765 * out misidentified bitmap packets, we reject anything with this 766 * bit set. 767 */ 768 if (f->is_mp) 769 return; 770 771 if (!priv->multi_packet && f->first_mp) { 772 priv->multi_packet = 1; 773 memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); 774 return; 775 } 776 777 priv->multi_packet = 0; 778 779 /* 780 * Sometimes the hardware sends a single packet with z = 0 781 * in the middle of a stream. Real releases generate packets 782 * with x, y, and z all zero, so these seem to be flukes. 783 * Ignore them. 784 */ 785 if (f->st.x && f->st.y && !f->pressure) 786 return; 787 788 alps_report_semi_mt_data(psmouse, fingers); 789 790 if ((priv->flags & ALPS_DUALPOINT) && 791 !(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) { 792 input_report_key(dev2, BTN_LEFT, f->ts_left); 793 input_report_key(dev2, BTN_RIGHT, f->ts_right); 794 input_report_key(dev2, BTN_MIDDLE, f->ts_middle); 795 input_sync(dev2); 796 } 797 } 798 799 static void alps_process_packet_v3(struct psmouse *psmouse) 800 { 801 unsigned char *packet = psmouse->packet; 802 803 /* 804 * v3 protocol packets come in three types, two representing 805 * touchpad data and one representing trackstick data. 806 * Trackstick packets seem to be distinguished by always 807 * having 0x3f in the last byte. This value has never been 808 * observed in the last byte of either of the other types 809 * of packets. 810 */ 811 if (packet[5] == 0x3f) { 812 alps_process_trackstick_packet_v3(psmouse); 813 return; 814 } 815 816 alps_process_touchpad_packet_v3_v5(psmouse); 817 } 818 819 static void alps_process_packet_v6(struct psmouse *psmouse) 820 { 821 struct alps_data *priv = psmouse->private; 822 unsigned char *packet = psmouse->packet; 823 struct input_dev *dev = psmouse->dev; 824 struct input_dev *dev2 = priv->dev2; 825 int x, y, z, left, right, middle; 826 827 /* 828 * We can use Byte5 to distinguish if the packet is from Touchpad 829 * or Trackpoint. 830 * Touchpad: 0 - 0x7E 831 * Trackpoint: 0x7F 832 */ 833 if (packet[5] == 0x7F) { 834 /* It should be a DualPoint when received Trackpoint packet */ 835 if (!(priv->flags & ALPS_DUALPOINT)) { 836 psmouse_warn(psmouse, 837 "Rejected trackstick packet from non DualPoint device"); 838 return; 839 } 840 841 /* Trackpoint packet */ 842 x = packet[1] | ((packet[3] & 0x20) << 2); 843 y = packet[2] | ((packet[3] & 0x40) << 1); 844 z = packet[4]; 845 left = packet[3] & 0x01; 846 right = packet[3] & 0x02; 847 middle = packet[3] & 0x04; 848 849 /* To prevent the cursor jump when finger lifted */ 850 if (x == 0x7F && y == 0x7F && z == 0x7F) 851 x = y = z = 0; 852 853 /* Divide 4 since trackpoint's speed is too fast */ 854 input_report_rel(dev2, REL_X, (char)x / 4); 855 input_report_rel(dev2, REL_Y, -((char)y / 4)); 856 857 input_report_key(dev2, BTN_LEFT, left); 858 input_report_key(dev2, BTN_RIGHT, right); 859 input_report_key(dev2, BTN_MIDDLE, middle); 860 861 input_sync(dev2); 862 return; 863 } 864 865 /* Touchpad packet */ 866 x = packet[1] | ((packet[3] & 0x78) << 4); 867 y = packet[2] | ((packet[4] & 0x78) << 4); 868 z = packet[5]; 869 left = packet[3] & 0x01; 870 right = packet[3] & 0x02; 871 872 if (z > 30) 873 input_report_key(dev, BTN_TOUCH, 1); 874 if (z < 25) 875 input_report_key(dev, BTN_TOUCH, 0); 876 877 if (z > 0) { 878 input_report_abs(dev, ABS_X, x); 879 input_report_abs(dev, ABS_Y, y); 880 } 881 882 input_report_abs(dev, ABS_PRESSURE, z); 883 input_report_key(dev, BTN_TOOL_FINGER, z > 0); 884 885 /* v6 touchpad does not have middle button */ 886 input_report_key(dev, BTN_LEFT, left); 887 input_report_key(dev, BTN_RIGHT, right); 888 889 input_sync(dev); 890 } 891 892 static void alps_process_packet_v4(struct psmouse *psmouse) 893 { 894 struct alps_data *priv = psmouse->private; 895 unsigned char *packet = psmouse->packet; 896 struct alps_fields *f = &priv->f; 897 int offset; 898 899 /* 900 * v4 has a 6-byte encoding for bitmap data, but this data is 901 * broken up between 3 normal packets. Use priv->multi_packet to 902 * track our position in the bitmap packet. 903 */ 904 if (packet[6] & 0x40) { 905 /* sync, reset position */ 906 priv->multi_packet = 0; 907 } 908 909 if (WARN_ON_ONCE(priv->multi_packet > 2)) 910 return; 911 912 offset = 2 * priv->multi_packet; 913 priv->multi_data[offset] = packet[6]; 914 priv->multi_data[offset + 1] = packet[7]; 915 916 f->left = !!(packet[4] & 0x01); 917 f->right = !!(packet[4] & 0x02); 918 919 f->st.x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) | 920 ((packet[0] & 0x30) >> 4); 921 f->st.y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f); 922 f->pressure = packet[5] & 0x7f; 923 924 if (++priv->multi_packet > 2) { 925 priv->multi_packet = 0; 926 927 f->x_map = ((priv->multi_data[2] & 0x1f) << 10) | 928 ((priv->multi_data[3] & 0x60) << 3) | 929 ((priv->multi_data[0] & 0x3f) << 2) | 930 ((priv->multi_data[1] & 0x60) >> 5); 931 f->y_map = ((priv->multi_data[5] & 0x01) << 10) | 932 ((priv->multi_data[3] & 0x1f) << 5) | 933 (priv->multi_data[1] & 0x1f); 934 935 f->fingers = alps_process_bitmap(priv, f); 936 } 937 938 alps_report_semi_mt_data(psmouse, f->fingers); 939 } 940 941 static bool alps_is_valid_package_v7(struct psmouse *psmouse) 942 { 943 switch (psmouse->pktcnt) { 944 case 3: 945 return (psmouse->packet[2] & 0x40) == 0x40; 946 case 4: 947 return (psmouse->packet[3] & 0x48) == 0x48; 948 case 6: 949 return (psmouse->packet[5] & 0x40) == 0x00; 950 } 951 return true; 952 } 953 954 static unsigned char alps_get_packet_id_v7(char *byte) 955 { 956 unsigned char packet_id; 957 958 if (byte[4] & 0x40) 959 packet_id = V7_PACKET_ID_TWO; 960 else if (byte[4] & 0x01) 961 packet_id = V7_PACKET_ID_MULTI; 962 else if ((byte[0] & 0x10) && !(byte[4] & 0x43)) 963 packet_id = V7_PACKET_ID_NEW; 964 else if (byte[1] == 0x00 && byte[4] == 0x00) 965 packet_id = V7_PACKET_ID_IDLE; 966 else 967 packet_id = V7_PACKET_ID_UNKNOWN; 968 969 return packet_id; 970 } 971 972 static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt, 973 unsigned char *pkt, 974 unsigned char pkt_id) 975 { 976 mt[0].x = ((pkt[2] & 0x80) << 4); 977 mt[0].x |= ((pkt[2] & 0x3F) << 5); 978 mt[0].x |= ((pkt[3] & 0x30) >> 1); 979 mt[0].x |= (pkt[3] & 0x07); 980 mt[0].y = (pkt[1] << 3) | (pkt[0] & 0x07); 981 982 mt[1].x = ((pkt[3] & 0x80) << 4); 983 mt[1].x |= ((pkt[4] & 0x80) << 3); 984 mt[1].x |= ((pkt[4] & 0x3F) << 4); 985 mt[1].y = ((pkt[5] & 0x80) << 3); 986 mt[1].y |= ((pkt[5] & 0x3F) << 4); 987 988 switch (pkt_id) { 989 case V7_PACKET_ID_TWO: 990 mt[1].x &= ~0x000F; 991 mt[1].y |= 0x000F; 992 /* Detect false-postive touches where x & y report max value */ 993 if (mt[1].y == 0x7ff && mt[1].x == 0xff0) { 994 mt[1].x = 0; 995 /* y gets set to 0 at the end of this function */ 996 } 997 break; 998 999 case V7_PACKET_ID_MULTI: 1000 mt[1].x &= ~0x003F; 1001 mt[1].y &= ~0x0020; 1002 mt[1].y |= ((pkt[4] & 0x02) << 4); 1003 mt[1].y |= 0x001F; 1004 break; 1005 1006 case V7_PACKET_ID_NEW: 1007 mt[1].x &= ~0x003F; 1008 mt[1].x |= (pkt[0] & 0x20); 1009 mt[1].y |= 0x000F; 1010 break; 1011 } 1012 1013 mt[0].y = 0x7FF - mt[0].y; 1014 mt[1].y = 0x7FF - mt[1].y; 1015 } 1016 1017 static int alps_get_mt_count(struct input_mt_pos *mt) 1018 { 1019 int i, fingers = 0; 1020 1021 for (i = 0; i < MAX_TOUCHES; i++) { 1022 if (mt[i].x != 0 || mt[i].y != 0) 1023 fingers++; 1024 } 1025 1026 return fingers; 1027 } 1028 1029 static int alps_decode_packet_v7(struct alps_fields *f, 1030 unsigned char *p, 1031 struct psmouse *psmouse) 1032 { 1033 struct alps_data *priv = psmouse->private; 1034 unsigned char pkt_id; 1035 1036 pkt_id = alps_get_packet_id_v7(p); 1037 if (pkt_id == V7_PACKET_ID_IDLE) 1038 return 0; 1039 if (pkt_id == V7_PACKET_ID_UNKNOWN) 1040 return -1; 1041 /* 1042 * NEW packets are send to indicate a discontinuity in the finger 1043 * coordinate reporting. Specifically a finger may have moved from 1044 * slot 0 to 1 or vice versa. INPUT_MT_TRACK takes care of this for 1045 * us. 1046 * 1047 * NEW packets have 3 problems: 1048 * 1) They do not contain middle / right button info (on non clickpads) 1049 * this can be worked around by preserving the old button state 1050 * 2) They do not contain an accurate fingercount, and they are 1051 * typically send when the number of fingers changes. We cannot use 1052 * the old finger count as that may mismatch with the amount of 1053 * touch coordinates we've available in the NEW packet 1054 * 3) Their x data for the second touch is inaccurate leading to 1055 * a possible jump of the x coordinate by 16 units when the first 1056 * non NEW packet comes in 1057 * Since problems 2 & 3 cannot be worked around, just ignore them. 1058 */ 1059 if (pkt_id == V7_PACKET_ID_NEW) 1060 return 1; 1061 1062 alps_get_finger_coordinate_v7(f->mt, p, pkt_id); 1063 1064 if (pkt_id == V7_PACKET_ID_TWO) 1065 f->fingers = alps_get_mt_count(f->mt); 1066 else /* pkt_id == V7_PACKET_ID_MULTI */ 1067 f->fingers = 3 + (p[5] & 0x03); 1068 1069 f->left = (p[0] & 0x80) >> 7; 1070 if (priv->flags & ALPS_BUTTONPAD) { 1071 if (p[0] & 0x20) 1072 f->fingers++; 1073 if (p[0] & 0x10) 1074 f->fingers++; 1075 } else { 1076 f->right = (p[0] & 0x20) >> 5; 1077 f->middle = (p[0] & 0x10) >> 4; 1078 } 1079 1080 /* Sometimes a single touch is reported in mt[1] rather then mt[0] */ 1081 if (f->fingers == 1 && f->mt[0].x == 0 && f->mt[0].y == 0) { 1082 f->mt[0].x = f->mt[1].x; 1083 f->mt[0].y = f->mt[1].y; 1084 f->mt[1].x = 0; 1085 f->mt[1].y = 0; 1086 } 1087 1088 return 0; 1089 } 1090 1091 static void alps_process_trackstick_packet_v7(struct psmouse *psmouse) 1092 { 1093 struct alps_data *priv = psmouse->private; 1094 unsigned char *packet = psmouse->packet; 1095 struct input_dev *dev2 = priv->dev2; 1096 int x, y, z, left, right, middle; 1097 1098 /* It should be a DualPoint when received trackstick packet */ 1099 if (!(priv->flags & ALPS_DUALPOINT)) { 1100 psmouse_warn(psmouse, 1101 "Rejected trackstick packet from non DualPoint device"); 1102 return; 1103 } 1104 1105 x = ((packet[2] & 0xbf)) | ((packet[3] & 0x10) << 2); 1106 y = (packet[3] & 0x07) | (packet[4] & 0xb8) | 1107 ((packet[3] & 0x20) << 1); 1108 z = (packet[5] & 0x3f) | ((packet[3] & 0x80) >> 1); 1109 1110 left = (packet[1] & 0x01); 1111 right = (packet[1] & 0x02) >> 1; 1112 middle = (packet[1] & 0x04) >> 2; 1113 1114 input_report_rel(dev2, REL_X, (char)x); 1115 input_report_rel(dev2, REL_Y, -((char)y)); 1116 1117 input_report_key(dev2, BTN_LEFT, left); 1118 input_report_key(dev2, BTN_RIGHT, right); 1119 input_report_key(dev2, BTN_MIDDLE, middle); 1120 1121 input_sync(dev2); 1122 } 1123 1124 static void alps_process_touchpad_packet_v7(struct psmouse *psmouse) 1125 { 1126 struct alps_data *priv = psmouse->private; 1127 struct input_dev *dev = psmouse->dev; 1128 struct alps_fields *f = &priv->f; 1129 1130 memset(f, 0, sizeof(*f)); 1131 1132 if (priv->decode_fields(f, psmouse->packet, psmouse)) 1133 return; 1134 1135 alps_report_mt_data(psmouse, alps_get_mt_count(f->mt)); 1136 1137 input_mt_report_finger_count(dev, f->fingers); 1138 1139 input_report_key(dev, BTN_LEFT, f->left); 1140 input_report_key(dev, BTN_RIGHT, f->right); 1141 input_report_key(dev, BTN_MIDDLE, f->middle); 1142 1143 input_sync(dev); 1144 } 1145 1146 static void alps_process_packet_v7(struct psmouse *psmouse) 1147 { 1148 unsigned char *packet = psmouse->packet; 1149 1150 if (packet[0] == 0x48 && (packet[4] & 0x47) == 0x06) 1151 alps_process_trackstick_packet_v7(psmouse); 1152 else 1153 alps_process_touchpad_packet_v7(psmouse); 1154 } 1155 1156 static unsigned char alps_get_pkt_id_ss4_v2(unsigned char *byte) 1157 { 1158 unsigned char pkt_id = SS4_PACKET_ID_IDLE; 1159 1160 switch (byte[3] & 0x30) { 1161 case 0x00: 1162 if (byte[0] == 0x18 && byte[1] == 0x10 && byte[2] == 0x00 && 1163 (byte[3] & 0x88) == 0x08 && byte[4] == 0x10 && 1164 byte[5] == 0x00) { 1165 pkt_id = SS4_PACKET_ID_IDLE; 1166 } else { 1167 pkt_id = SS4_PACKET_ID_ONE; 1168 } 1169 break; 1170 case 0x10: 1171 /* two-finger finger positions */ 1172 pkt_id = SS4_PACKET_ID_TWO; 1173 break; 1174 case 0x20: 1175 /* stick pointer */ 1176 pkt_id = SS4_PACKET_ID_STICK; 1177 break; 1178 case 0x30: 1179 /* third and fourth finger positions */ 1180 pkt_id = SS4_PACKET_ID_MULTI; 1181 break; 1182 } 1183 1184 return pkt_id; 1185 } 1186 1187 static int alps_decode_ss4_v2(struct alps_fields *f, 1188 unsigned char *p, struct psmouse *psmouse) 1189 { 1190 struct alps_data *priv = psmouse->private; 1191 unsigned char pkt_id; 1192 unsigned int no_data_x, no_data_y; 1193 1194 pkt_id = alps_get_pkt_id_ss4_v2(p); 1195 1196 /* Current packet is 1Finger coordinate packet */ 1197 switch (pkt_id) { 1198 case SS4_PACKET_ID_ONE: 1199 f->mt[0].x = SS4_1F_X_V2(p); 1200 f->mt[0].y = SS4_1F_Y_V2(p); 1201 f->pressure = ((SS4_1F_Z_V2(p)) * 2) & 0x7f; 1202 /* 1203 * When a button is held the device will give us events 1204 * with x, y, and pressure of 0. This causes annoying jumps 1205 * if a touch is released while the button is held. 1206 * Handle this by claiming zero contacts. 1207 */ 1208 f->fingers = f->pressure > 0 ? 1 : 0; 1209 f->first_mp = 0; 1210 f->is_mp = 0; 1211 break; 1212 1213 case SS4_PACKET_ID_TWO: 1214 if (priv->flags & ALPS_BUTTONPAD) { 1215 f->mt[0].x = SS4_BTL_MF_X_V2(p, 0); 1216 f->mt[0].y = SS4_BTL_MF_Y_V2(p, 0); 1217 f->mt[1].x = SS4_BTL_MF_X_V2(p, 1); 1218 f->mt[1].y = SS4_BTL_MF_Y_V2(p, 1); 1219 } else { 1220 f->mt[0].x = SS4_STD_MF_X_V2(p, 0); 1221 f->mt[0].y = SS4_STD_MF_Y_V2(p, 0); 1222 f->mt[1].x = SS4_STD_MF_X_V2(p, 1); 1223 f->mt[1].y = SS4_STD_MF_Y_V2(p, 1); 1224 } 1225 f->pressure = SS4_MF_Z_V2(p, 0) ? 0x30 : 0; 1226 1227 if (SS4_IS_MF_CONTINUE(p)) { 1228 f->first_mp = 1; 1229 } else { 1230 f->fingers = 2; 1231 f->first_mp = 0; 1232 } 1233 f->is_mp = 0; 1234 1235 break; 1236 1237 case SS4_PACKET_ID_MULTI: 1238 if (priv->flags & ALPS_BUTTONPAD) { 1239 f->mt[2].x = SS4_BTL_MF_X_V2(p, 0); 1240 f->mt[2].y = SS4_BTL_MF_Y_V2(p, 0); 1241 f->mt[3].x = SS4_BTL_MF_X_V2(p, 1); 1242 f->mt[3].y = SS4_BTL_MF_Y_V2(p, 1); 1243 no_data_x = SS4_MFPACKET_NO_AX_BL; 1244 no_data_y = SS4_MFPACKET_NO_AY_BL; 1245 } else { 1246 f->mt[2].x = SS4_STD_MF_X_V2(p, 0); 1247 f->mt[2].y = SS4_STD_MF_Y_V2(p, 0); 1248 f->mt[3].x = SS4_STD_MF_X_V2(p, 1); 1249 f->mt[3].y = SS4_STD_MF_Y_V2(p, 1); 1250 no_data_x = SS4_MFPACKET_NO_AX; 1251 no_data_y = SS4_MFPACKET_NO_AY; 1252 } 1253 1254 f->first_mp = 0; 1255 f->is_mp = 1; 1256 1257 if (SS4_IS_5F_DETECTED(p)) { 1258 f->fingers = 5; 1259 } else if (f->mt[3].x == no_data_x && 1260 f->mt[3].y == no_data_y) { 1261 f->mt[3].x = 0; 1262 f->mt[3].y = 0; 1263 f->fingers = 3; 1264 } else { 1265 f->fingers = 4; 1266 } 1267 break; 1268 1269 case SS4_PACKET_ID_STICK: 1270 if (!(priv->flags & ALPS_DUALPOINT)) { 1271 psmouse_warn(psmouse, 1272 "Rejected trackstick packet from non DualPoint device"); 1273 } else { 1274 int x = (s8)(((p[0] & 1) << 7) | (p[1] & 0x7f)); 1275 int y = (s8)(((p[3] & 1) << 7) | (p[2] & 0x7f)); 1276 int pressure = (s8)(p[4] & 0x7f); 1277 1278 input_report_rel(priv->dev2, REL_X, x); 1279 input_report_rel(priv->dev2, REL_Y, -y); 1280 input_report_abs(priv->dev2, ABS_PRESSURE, pressure); 1281 } 1282 break; 1283 1284 case SS4_PACKET_ID_IDLE: 1285 default: 1286 memset(f, 0, sizeof(struct alps_fields)); 1287 break; 1288 } 1289 1290 /* handle buttons */ 1291 if (pkt_id == SS4_PACKET_ID_STICK) { 1292 f->ts_left = !!(SS4_BTN_V2(p) & 0x01); 1293 if (!(priv->flags & ALPS_BUTTONPAD)) { 1294 f->ts_right = !!(SS4_BTN_V2(p) & 0x02); 1295 f->ts_middle = !!(SS4_BTN_V2(p) & 0x04); 1296 } 1297 } else { 1298 f->left = !!(SS4_BTN_V2(p) & 0x01); 1299 if (!(priv->flags & ALPS_BUTTONPAD)) { 1300 f->right = !!(SS4_BTN_V2(p) & 0x02); 1301 f->middle = !!(SS4_BTN_V2(p) & 0x04); 1302 } 1303 } 1304 1305 return 0; 1306 } 1307 1308 static void alps_process_packet_ss4_v2(struct psmouse *psmouse) 1309 { 1310 struct alps_data *priv = psmouse->private; 1311 unsigned char *packet = psmouse->packet; 1312 struct input_dev *dev = psmouse->dev; 1313 struct input_dev *dev2 = priv->dev2; 1314 struct alps_fields *f = &priv->f; 1315 1316 memset(f, 0, sizeof(struct alps_fields)); 1317 priv->decode_fields(f, packet, psmouse); 1318 if (priv->multi_packet) { 1319 /* 1320 * Sometimes the first packet will indicate a multi-packet 1321 * sequence, but sometimes the next multi-packet would not 1322 * come. Check for this, and when it happens process the 1323 * position packet as usual. 1324 */ 1325 if (f->is_mp) { 1326 /* Now process the 1st packet */ 1327 priv->decode_fields(f, priv->multi_data, psmouse); 1328 } else { 1329 priv->multi_packet = 0; 1330 } 1331 } 1332 1333 /* 1334 * "f.is_mp" would always be '0' after merging the 1st and 2nd packet. 1335 * When it is set, it means 2nd packet comes without 1st packet come. 1336 */ 1337 if (f->is_mp) 1338 return; 1339 1340 /* Save the first packet */ 1341 if (!priv->multi_packet && f->first_mp) { 1342 priv->multi_packet = 1; 1343 memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); 1344 return; 1345 } 1346 1347 priv->multi_packet = 0; 1348 1349 alps_report_mt_data(psmouse, (f->fingers <= 4) ? f->fingers : 4); 1350 1351 input_mt_report_finger_count(dev, f->fingers); 1352 1353 input_report_key(dev, BTN_LEFT, f->left); 1354 input_report_key(dev, BTN_RIGHT, f->right); 1355 input_report_key(dev, BTN_MIDDLE, f->middle); 1356 1357 input_report_abs(dev, ABS_PRESSURE, f->pressure); 1358 input_sync(dev); 1359 1360 if (priv->flags & ALPS_DUALPOINT) { 1361 input_report_key(dev2, BTN_LEFT, f->ts_left); 1362 input_report_key(dev2, BTN_RIGHT, f->ts_right); 1363 input_report_key(dev2, BTN_MIDDLE, f->ts_middle); 1364 input_sync(dev2); 1365 } 1366 } 1367 1368 static bool alps_is_valid_package_ss4_v2(struct psmouse *psmouse) 1369 { 1370 if (psmouse->pktcnt == 4 && ((psmouse->packet[3] & 0x08) != 0x08)) 1371 return false; 1372 if (psmouse->pktcnt == 6 && ((psmouse->packet[5] & 0x10) != 0x0)) 1373 return false; 1374 return true; 1375 } 1376 1377 static DEFINE_MUTEX(alps_mutex); 1378 1379 static void alps_register_bare_ps2_mouse(struct work_struct *work) 1380 { 1381 struct alps_data *priv = 1382 container_of(work, struct alps_data, dev3_register_work.work); 1383 struct psmouse *psmouse = priv->psmouse; 1384 struct input_dev *dev3; 1385 int error = 0; 1386 1387 mutex_lock(&alps_mutex); 1388 1389 if (priv->dev3) 1390 goto out; 1391 1392 dev3 = input_allocate_device(); 1393 if (!dev3) { 1394 psmouse_err(psmouse, "failed to allocate secondary device\n"); 1395 error = -ENOMEM; 1396 goto out; 1397 } 1398 1399 snprintf(priv->phys3, sizeof(priv->phys3), "%s/%s", 1400 psmouse->ps2dev.serio->phys, 1401 (priv->dev2 ? "input2" : "input1")); 1402 dev3->phys = priv->phys3; 1403 1404 /* 1405 * format of input device name is: "protocol vendor name" 1406 * see function psmouse_switch_protocol() in psmouse-base.c 1407 */ 1408 dev3->name = "PS/2 ALPS Mouse"; 1409 1410 dev3->id.bustype = BUS_I8042; 1411 dev3->id.vendor = 0x0002; 1412 dev3->id.product = PSMOUSE_PS2; 1413 dev3->id.version = 0x0000; 1414 dev3->dev.parent = &psmouse->ps2dev.serio->dev; 1415 1416 input_set_capability(dev3, EV_REL, REL_X); 1417 input_set_capability(dev3, EV_REL, REL_Y); 1418 input_set_capability(dev3, EV_KEY, BTN_LEFT); 1419 input_set_capability(dev3, EV_KEY, BTN_RIGHT); 1420 input_set_capability(dev3, EV_KEY, BTN_MIDDLE); 1421 1422 __set_bit(INPUT_PROP_POINTER, dev3->propbit); 1423 1424 error = input_register_device(dev3); 1425 if (error) { 1426 psmouse_err(psmouse, 1427 "failed to register secondary device: %d\n", 1428 error); 1429 input_free_device(dev3); 1430 goto out; 1431 } 1432 1433 priv->dev3 = dev3; 1434 1435 out: 1436 /* 1437 * Save the error code so that we can detect that we 1438 * already tried to create the device. 1439 */ 1440 if (error) 1441 priv->dev3 = ERR_PTR(error); 1442 1443 mutex_unlock(&alps_mutex); 1444 } 1445 1446 static void alps_report_bare_ps2_packet(struct psmouse *psmouse, 1447 unsigned char packet[], 1448 bool report_buttons) 1449 { 1450 struct alps_data *priv = psmouse->private; 1451 struct input_dev *dev, *dev2 = NULL; 1452 1453 /* Figure out which device to use to report the bare packet */ 1454 if (priv->proto_version == ALPS_PROTO_V2 && 1455 (priv->flags & ALPS_DUALPOINT)) { 1456 /* On V2 devices the DualPoint Stick reports bare packets */ 1457 dev = priv->dev2; 1458 dev2 = psmouse->dev; 1459 } else if (unlikely(IS_ERR_OR_NULL(priv->dev3))) { 1460 /* Register dev3 mouse if we received PS/2 packet first time */ 1461 if (!IS_ERR(priv->dev3)) 1462 psmouse_queue_work(psmouse, &priv->dev3_register_work, 1463 0); 1464 return; 1465 } else { 1466 dev = priv->dev3; 1467 } 1468 1469 if (report_buttons) 1470 alps_report_buttons(dev, dev2, 1471 packet[0] & 1, packet[0] & 2, packet[0] & 4); 1472 1473 input_report_rel(dev, REL_X, 1474 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0); 1475 input_report_rel(dev, REL_Y, 1476 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0); 1477 1478 input_sync(dev); 1479 } 1480 1481 static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse) 1482 { 1483 struct alps_data *priv = psmouse->private; 1484 1485 if (psmouse->pktcnt < 6) 1486 return PSMOUSE_GOOD_DATA; 1487 1488 if (psmouse->pktcnt == 6) { 1489 /* 1490 * Start a timer to flush the packet if it ends up last 1491 * 6-byte packet in the stream. Timer needs to fire 1492 * psmouse core times out itself. 20 ms should be enough 1493 * to decide if we are getting more data or not. 1494 */ 1495 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20)); 1496 return PSMOUSE_GOOD_DATA; 1497 } 1498 1499 del_timer(&priv->timer); 1500 1501 if (psmouse->packet[6] & 0x80) { 1502 1503 /* 1504 * Highest bit is set - that means we either had 1505 * complete ALPS packet and this is start of the 1506 * next packet or we got garbage. 1507 */ 1508 1509 if (((psmouse->packet[3] | 1510 psmouse->packet[4] | 1511 psmouse->packet[5]) & 0x80) || 1512 (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) { 1513 psmouse_dbg(psmouse, 1514 "refusing packet %4ph (suspected interleaved ps/2)\n", 1515 psmouse->packet + 3); 1516 return PSMOUSE_BAD_DATA; 1517 } 1518 1519 priv->process_packet(psmouse); 1520 1521 /* Continue with the next packet */ 1522 psmouse->packet[0] = psmouse->packet[6]; 1523 psmouse->pktcnt = 1; 1524 1525 } else { 1526 1527 /* 1528 * High bit is 0 - that means that we indeed got a PS/2 1529 * packet in the middle of ALPS packet. 1530 * 1531 * There is also possibility that we got 6-byte ALPS 1532 * packet followed by 3-byte packet from trackpoint. We 1533 * can not distinguish between these 2 scenarios but 1534 * because the latter is unlikely to happen in course of 1535 * normal operation (user would need to press all 1536 * buttons on the pad and start moving trackpoint 1537 * without touching the pad surface) we assume former. 1538 * Even if we are wrong the wost thing that would happen 1539 * the cursor would jump but we should not get protocol 1540 * de-synchronization. 1541 */ 1542 1543 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3], 1544 false); 1545 1546 /* 1547 * Continue with the standard ALPS protocol handling, 1548 * but make sure we won't process it as an interleaved 1549 * packet again, which may happen if all buttons are 1550 * pressed. To avoid this let's reset the 4th bit which 1551 * is normally 1. 1552 */ 1553 psmouse->packet[3] = psmouse->packet[6] & 0xf7; 1554 psmouse->pktcnt = 4; 1555 } 1556 1557 return PSMOUSE_GOOD_DATA; 1558 } 1559 1560 static void alps_flush_packet(unsigned long data) 1561 { 1562 struct psmouse *psmouse = (struct psmouse *)data; 1563 struct alps_data *priv = psmouse->private; 1564 1565 serio_pause_rx(psmouse->ps2dev.serio); 1566 1567 if (psmouse->pktcnt == psmouse->pktsize) { 1568 1569 /* 1570 * We did not any more data in reasonable amount of time. 1571 * Validate the last 3 bytes and process as a standard 1572 * ALPS packet. 1573 */ 1574 if ((psmouse->packet[3] | 1575 psmouse->packet[4] | 1576 psmouse->packet[5]) & 0x80) { 1577 psmouse_dbg(psmouse, 1578 "refusing packet %3ph (suspected interleaved ps/2)\n", 1579 psmouse->packet + 3); 1580 } else { 1581 priv->process_packet(psmouse); 1582 } 1583 psmouse->pktcnt = 0; 1584 } 1585 1586 serio_continue_rx(psmouse->ps2dev.serio); 1587 } 1588 1589 static psmouse_ret_t alps_process_byte(struct psmouse *psmouse) 1590 { 1591 struct alps_data *priv = psmouse->private; 1592 1593 /* 1594 * Check if we are dealing with a bare PS/2 packet, presumably from 1595 * a device connected to the external PS/2 port. Because bare PS/2 1596 * protocol does not have enough constant bits to self-synchronize 1597 * properly we only do this if the device is fully synchronized. 1598 * Can not distinguish V8's first byte from PS/2 packet's 1599 */ 1600 if (priv->proto_version != ALPS_PROTO_V8 && 1601 !psmouse->out_of_sync_cnt && 1602 (psmouse->packet[0] & 0xc8) == 0x08) { 1603 1604 if (psmouse->pktcnt == 3) { 1605 alps_report_bare_ps2_packet(psmouse, psmouse->packet, 1606 true); 1607 return PSMOUSE_FULL_PACKET; 1608 } 1609 return PSMOUSE_GOOD_DATA; 1610 } 1611 1612 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */ 1613 1614 if ((priv->flags & ALPS_PS2_INTERLEAVED) && 1615 psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) { 1616 return alps_handle_interleaved_ps2(psmouse); 1617 } 1618 1619 if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) { 1620 psmouse_dbg(psmouse, 1621 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n", 1622 psmouse->packet[0], priv->mask0, priv->byte0); 1623 return PSMOUSE_BAD_DATA; 1624 } 1625 1626 /* Bytes 2 - pktsize should have 0 in the highest bit */ 1627 if (priv->proto_version < ALPS_PROTO_V5 && 1628 psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize && 1629 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) { 1630 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1631 psmouse->pktcnt - 1, 1632 psmouse->packet[psmouse->pktcnt - 1]); 1633 1634 if (priv->proto_version == ALPS_PROTO_V3_RUSHMORE && 1635 psmouse->pktcnt == psmouse->pktsize) { 1636 /* 1637 * Some Dell boxes, such as Latitude E6440 or E7440 1638 * with closed lid, quite often smash last byte of 1639 * otherwise valid packet with 0xff. Given that the 1640 * next packet is very likely to be valid let's 1641 * report PSMOUSE_FULL_PACKET but not process data, 1642 * rather than reporting PSMOUSE_BAD_DATA and 1643 * filling the logs. 1644 */ 1645 return PSMOUSE_FULL_PACKET; 1646 } 1647 1648 return PSMOUSE_BAD_DATA; 1649 } 1650 1651 if ((priv->proto_version == ALPS_PROTO_V7 && 1652 !alps_is_valid_package_v7(psmouse)) || 1653 (priv->proto_version == ALPS_PROTO_V8 && 1654 !alps_is_valid_package_ss4_v2(psmouse))) { 1655 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1656 psmouse->pktcnt - 1, 1657 psmouse->packet[psmouse->pktcnt - 1]); 1658 return PSMOUSE_BAD_DATA; 1659 } 1660 1661 if (psmouse->pktcnt == psmouse->pktsize) { 1662 priv->process_packet(psmouse); 1663 return PSMOUSE_FULL_PACKET; 1664 } 1665 1666 return PSMOUSE_GOOD_DATA; 1667 } 1668 1669 static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble) 1670 { 1671 struct ps2dev *ps2dev = &psmouse->ps2dev; 1672 struct alps_data *priv = psmouse->private; 1673 int command; 1674 unsigned char *param; 1675 unsigned char dummy[4]; 1676 1677 BUG_ON(nibble > 0xf); 1678 1679 command = priv->nibble_commands[nibble].command; 1680 param = (command & 0x0f00) ? 1681 dummy : (unsigned char *)&priv->nibble_commands[nibble].data; 1682 1683 if (ps2_command(ps2dev, param, command)) 1684 return -1; 1685 1686 return 0; 1687 } 1688 1689 static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr) 1690 { 1691 struct ps2dev *ps2dev = &psmouse->ps2dev; 1692 struct alps_data *priv = psmouse->private; 1693 int i, nibble; 1694 1695 if (ps2_command(ps2dev, NULL, priv->addr_command)) 1696 return -1; 1697 1698 for (i = 12; i >= 0; i -= 4) { 1699 nibble = (addr >> i) & 0xf; 1700 if (alps_command_mode_send_nibble(psmouse, nibble)) 1701 return -1; 1702 } 1703 1704 return 0; 1705 } 1706 1707 static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1708 { 1709 struct ps2dev *ps2dev = &psmouse->ps2dev; 1710 unsigned char param[4]; 1711 1712 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1713 return -1; 1714 1715 /* 1716 * The address being read is returned in the first two bytes 1717 * of the result. Check that this address matches the expected 1718 * address. 1719 */ 1720 if (addr != ((param[0] << 8) | param[1])) 1721 return -1; 1722 1723 return param[2]; 1724 } 1725 1726 static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 1727 { 1728 if (alps_command_mode_set_addr(psmouse, addr)) 1729 return -1; 1730 return __alps_command_mode_read_reg(psmouse, addr); 1731 } 1732 1733 static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value) 1734 { 1735 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf)) 1736 return -1; 1737 if (alps_command_mode_send_nibble(psmouse, value & 0xf)) 1738 return -1; 1739 return 0; 1740 } 1741 1742 static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr, 1743 u8 value) 1744 { 1745 if (alps_command_mode_set_addr(psmouse, addr)) 1746 return -1; 1747 return __alps_command_mode_write_reg(psmouse, value); 1748 } 1749 1750 static int alps_rpt_cmd(struct psmouse *psmouse, int init_command, 1751 int repeated_command, unsigned char *param) 1752 { 1753 struct ps2dev *ps2dev = &psmouse->ps2dev; 1754 1755 param[0] = 0; 1756 if (init_command && ps2_command(ps2dev, param, init_command)) 1757 return -EIO; 1758 1759 if (ps2_command(ps2dev, NULL, repeated_command) || 1760 ps2_command(ps2dev, NULL, repeated_command) || 1761 ps2_command(ps2dev, NULL, repeated_command)) 1762 return -EIO; 1763 1764 param[0] = param[1] = param[2] = 0xff; 1765 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 1766 return -EIO; 1767 1768 psmouse_dbg(psmouse, "%2.2X report: %3ph\n", 1769 repeated_command, param); 1770 return 0; 1771 } 1772 1773 static bool alps_check_valid_firmware_id(unsigned char id[]) 1774 { 1775 if (id[0] == 0x73) 1776 return true; 1777 1778 if (id[0] == 0x88 && 1779 (id[1] == 0x07 || 1780 id[1] == 0x08 || 1781 (id[1] & 0xf0) == 0xb0 || 1782 (id[1] & 0xf0) == 0xc0)) { 1783 return true; 1784 } 1785 1786 return false; 1787 } 1788 1789 static int alps_enter_command_mode(struct psmouse *psmouse) 1790 { 1791 unsigned char param[4]; 1792 1793 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) { 1794 psmouse_err(psmouse, "failed to enter command mode\n"); 1795 return -1; 1796 } 1797 1798 if (!alps_check_valid_firmware_id(param)) { 1799 psmouse_dbg(psmouse, 1800 "unknown response while entering command mode\n"); 1801 return -1; 1802 } 1803 return 0; 1804 } 1805 1806 static inline int alps_exit_command_mode(struct psmouse *psmouse) 1807 { 1808 struct ps2dev *ps2dev = &psmouse->ps2dev; 1809 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) 1810 return -1; 1811 return 0; 1812 } 1813 1814 /* 1815 * For DualPoint devices select the device that should respond to 1816 * subsequent commands. It looks like glidepad is behind stickpointer, 1817 * I'd thought it would be other way around... 1818 */ 1819 static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable) 1820 { 1821 struct ps2dev *ps2dev = &psmouse->ps2dev; 1822 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11; 1823 1824 if (ps2_command(ps2dev, NULL, cmd) || 1825 ps2_command(ps2dev, NULL, cmd) || 1826 ps2_command(ps2dev, NULL, cmd) || 1827 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1828 return -1; 1829 1830 /* we may get 3 more bytes, just ignore them */ 1831 ps2_drain(ps2dev, 3, 100); 1832 1833 return 0; 1834 } 1835 1836 static int alps_absolute_mode_v1_v2(struct psmouse *psmouse) 1837 { 1838 struct ps2dev *ps2dev = &psmouse->ps2dev; 1839 1840 /* Try ALPS magic knock - 4 disable before enable */ 1841 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1842 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1843 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1844 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1845 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) 1846 return -1; 1847 1848 /* 1849 * Switch mouse to poll (remote) mode so motion data will not 1850 * get in our way 1851 */ 1852 return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL); 1853 } 1854 1855 static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word) 1856 { 1857 int i, nibble; 1858 1859 /* 1860 * b0-b11 are valid bits, send sequence is inverse. 1861 * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1 1862 */ 1863 for (i = 0; i <= 8; i += 4) { 1864 nibble = (word >> i) & 0xf; 1865 if (alps_command_mode_send_nibble(psmouse, nibble)) 1866 return -1; 1867 } 1868 1869 return 0; 1870 } 1871 1872 static int alps_monitor_mode_write_reg(struct psmouse *psmouse, 1873 u16 addr, u16 value) 1874 { 1875 struct ps2dev *ps2dev = &psmouse->ps2dev; 1876 1877 /* 0x0A0 is the command to write the word */ 1878 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) || 1879 alps_monitor_mode_send_word(psmouse, 0x0A0) || 1880 alps_monitor_mode_send_word(psmouse, addr) || 1881 alps_monitor_mode_send_word(psmouse, value) || 1882 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 1883 return -1; 1884 1885 return 0; 1886 } 1887 1888 static int alps_monitor_mode(struct psmouse *psmouse, bool enable) 1889 { 1890 struct ps2dev *ps2dev = &psmouse->ps2dev; 1891 1892 if (enable) { 1893 /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */ 1894 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 1895 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) || 1896 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1897 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1898 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1899 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 1900 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 1901 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO)) 1902 return -1; 1903 } else { 1904 /* EC to exit monitor mode */ 1905 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP)) 1906 return -1; 1907 } 1908 1909 return 0; 1910 } 1911 1912 static int alps_absolute_mode_v6(struct psmouse *psmouse) 1913 { 1914 u16 reg_val = 0x181; 1915 int ret = -1; 1916 1917 /* enter monitor mode, to write the register */ 1918 if (alps_monitor_mode(psmouse, true)) 1919 return -1; 1920 1921 ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val); 1922 1923 if (alps_monitor_mode(psmouse, false)) 1924 ret = -1; 1925 1926 return ret; 1927 } 1928 1929 static int alps_get_status(struct psmouse *psmouse, char *param) 1930 { 1931 /* Get status: 0xF5 0xF5 0xF5 0xE9 */ 1932 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param)) 1933 return -1; 1934 1935 return 0; 1936 } 1937 1938 /* 1939 * Turn touchpad tapping on or off. The sequences are: 1940 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable, 1941 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable. 1942 * My guess that 0xE9 (GetInfo) is here as a sync point. 1943 * For models that also have stickpointer (DualPoints) its tapping 1944 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but 1945 * we don't fiddle with it. 1946 */ 1947 static int alps_tap_mode(struct psmouse *psmouse, int enable) 1948 { 1949 struct ps2dev *ps2dev = &psmouse->ps2dev; 1950 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES; 1951 unsigned char tap_arg = enable ? 0x0A : 0x00; 1952 unsigned char param[4]; 1953 1954 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) || 1955 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1956 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 1957 ps2_command(ps2dev, &tap_arg, cmd)) 1958 return -1; 1959 1960 if (alps_get_status(psmouse, param)) 1961 return -1; 1962 1963 return 0; 1964 } 1965 1966 /* 1967 * alps_poll() - poll the touchpad for current motion packet. 1968 * Used in resync. 1969 */ 1970 static int alps_poll(struct psmouse *psmouse) 1971 { 1972 struct alps_data *priv = psmouse->private; 1973 unsigned char buf[sizeof(psmouse->packet)]; 1974 bool poll_failed; 1975 1976 if (priv->flags & ALPS_PASS) 1977 alps_passthrough_mode_v2(psmouse, true); 1978 1979 poll_failed = ps2_command(&psmouse->ps2dev, buf, 1980 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0; 1981 1982 if (priv->flags & ALPS_PASS) 1983 alps_passthrough_mode_v2(psmouse, false); 1984 1985 if (poll_failed || (buf[0] & priv->mask0) != priv->byte0) 1986 return -1; 1987 1988 if ((psmouse->badbyte & 0xc8) == 0x08) { 1989 /* 1990 * Poll the track stick ... 1991 */ 1992 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8))) 1993 return -1; 1994 } 1995 1996 memcpy(psmouse->packet, buf, sizeof(buf)); 1997 return 0; 1998 } 1999 2000 static int alps_hw_init_v1_v2(struct psmouse *psmouse) 2001 { 2002 struct alps_data *priv = psmouse->private; 2003 2004 if ((priv->flags & ALPS_PASS) && 2005 alps_passthrough_mode_v2(psmouse, true)) { 2006 return -1; 2007 } 2008 2009 if (alps_tap_mode(psmouse, true)) { 2010 psmouse_warn(psmouse, "Failed to enable hardware tapping\n"); 2011 return -1; 2012 } 2013 2014 if (alps_absolute_mode_v1_v2(psmouse)) { 2015 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 2016 return -1; 2017 } 2018 2019 if ((priv->flags & ALPS_PASS) && 2020 alps_passthrough_mode_v2(psmouse, false)) { 2021 return -1; 2022 } 2023 2024 /* ALPS needs stream mode, otherwise it won't report any data */ 2025 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) { 2026 psmouse_err(psmouse, "Failed to enable stream mode\n"); 2027 return -1; 2028 } 2029 2030 return 0; 2031 } 2032 2033 static int alps_hw_init_v6(struct psmouse *psmouse) 2034 { 2035 unsigned char param[2] = {0xC8, 0x14}; 2036 2037 /* Enter passthrough mode to let trackpoint enter 6byte raw mode */ 2038 if (alps_passthrough_mode_v2(psmouse, true)) 2039 return -1; 2040 2041 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2042 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2043 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2044 ps2_command(&psmouse->ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2045 ps2_command(&psmouse->ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 2046 return -1; 2047 2048 if (alps_passthrough_mode_v2(psmouse, false)) 2049 return -1; 2050 2051 if (alps_absolute_mode_v6(psmouse)) { 2052 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 2053 return -1; 2054 } 2055 2056 return 0; 2057 } 2058 2059 /* 2060 * Enable or disable passthrough mode to the trackstick. 2061 */ 2062 static int alps_passthrough_mode_v3(struct psmouse *psmouse, 2063 int reg_base, bool enable) 2064 { 2065 int reg_val, ret = -1; 2066 2067 if (alps_enter_command_mode(psmouse)) 2068 return -1; 2069 2070 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008); 2071 if (reg_val == -1) 2072 goto error; 2073 2074 if (enable) 2075 reg_val |= 0x01; 2076 else 2077 reg_val &= ~0x01; 2078 2079 ret = __alps_command_mode_write_reg(psmouse, reg_val); 2080 2081 error: 2082 if (alps_exit_command_mode(psmouse)) 2083 ret = -1; 2084 return ret; 2085 } 2086 2087 /* Must be in command mode when calling this function */ 2088 static int alps_absolute_mode_v3(struct psmouse *psmouse) 2089 { 2090 int reg_val; 2091 2092 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 2093 if (reg_val == -1) 2094 return -1; 2095 2096 reg_val |= 0x06; 2097 if (__alps_command_mode_write_reg(psmouse, reg_val)) 2098 return -1; 2099 2100 return 0; 2101 } 2102 2103 static int alps_probe_trackstick_v3_v7(struct psmouse *psmouse, int reg_base) 2104 { 2105 int ret = -EIO, reg_val; 2106 2107 if (alps_enter_command_mode(psmouse)) 2108 goto error; 2109 2110 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08); 2111 if (reg_val == -1) 2112 goto error; 2113 2114 /* bit 7: trackstick is present */ 2115 ret = reg_val & 0x80 ? 0 : -ENODEV; 2116 2117 error: 2118 alps_exit_command_mode(psmouse); 2119 return ret; 2120 } 2121 2122 static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base) 2123 { 2124 struct ps2dev *ps2dev = &psmouse->ps2dev; 2125 int ret = 0; 2126 unsigned char param[4]; 2127 2128 if (alps_passthrough_mode_v3(psmouse, reg_base, true)) 2129 return -EIO; 2130 2131 /* 2132 * E7 report for the trackstick 2133 * 2134 * There have been reports of failures to seem to trace back 2135 * to the above trackstick check failing. When these occur 2136 * this E7 report fails, so when that happens we continue 2137 * with the assumption that there isn't a trackstick after 2138 * all. 2139 */ 2140 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) { 2141 psmouse_warn(psmouse, "Failed to initialize trackstick (E7 report failed)\n"); 2142 ret = -ENODEV; 2143 } else { 2144 psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param); 2145 2146 /* 2147 * Not sure what this does, but it is absolutely 2148 * essential. Without it, the touchpad does not 2149 * work at all and the trackstick just emits normal 2150 * PS/2 packets. 2151 */ 2152 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2153 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2154 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 2155 alps_command_mode_send_nibble(psmouse, 0x9) || 2156 alps_command_mode_send_nibble(psmouse, 0x4)) { 2157 psmouse_err(psmouse, 2158 "Error sending magic E6 sequence\n"); 2159 ret = -EIO; 2160 goto error; 2161 } 2162 2163 /* 2164 * This ensures the trackstick packets are in the format 2165 * supported by this driver. If bit 1 isn't set the packet 2166 * format is different. 2167 */ 2168 if (alps_enter_command_mode(psmouse) || 2169 alps_command_mode_write_reg(psmouse, 2170 reg_base + 0x08, 0x82) || 2171 alps_exit_command_mode(psmouse)) 2172 ret = -EIO; 2173 } 2174 2175 error: 2176 if (alps_passthrough_mode_v3(psmouse, reg_base, false)) 2177 ret = -EIO; 2178 2179 return ret; 2180 } 2181 2182 static int alps_hw_init_v3(struct psmouse *psmouse) 2183 { 2184 struct alps_data *priv = psmouse->private; 2185 struct ps2dev *ps2dev = &psmouse->ps2dev; 2186 int reg_val; 2187 unsigned char param[4]; 2188 2189 if ((priv->flags & ALPS_DUALPOINT) && 2190 alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO) 2191 goto error; 2192 2193 if (alps_enter_command_mode(psmouse) || 2194 alps_absolute_mode_v3(psmouse)) { 2195 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 2196 goto error; 2197 } 2198 2199 reg_val = alps_command_mode_read_reg(psmouse, 0x0006); 2200 if (reg_val == -1) 2201 goto error; 2202 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 2203 goto error; 2204 2205 reg_val = alps_command_mode_read_reg(psmouse, 0x0007); 2206 if (reg_val == -1) 2207 goto error; 2208 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 2209 goto error; 2210 2211 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1) 2212 goto error; 2213 if (__alps_command_mode_write_reg(psmouse, 0x04)) 2214 goto error; 2215 2216 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1) 2217 goto error; 2218 if (__alps_command_mode_write_reg(psmouse, 0x03)) 2219 goto error; 2220 2221 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1) 2222 goto error; 2223 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03)) 2224 goto error; 2225 2226 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1) 2227 goto error; 2228 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04)) 2229 goto error; 2230 2231 alps_exit_command_mode(psmouse); 2232 2233 /* Set rate and enable data reporting */ 2234 param[0] = 0x64; 2235 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 2236 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 2237 psmouse_err(psmouse, "Failed to enable data reporting\n"); 2238 return -1; 2239 } 2240 2241 return 0; 2242 2243 error: 2244 /* 2245 * Leaving the touchpad in command mode will essentially render 2246 * it unusable until the machine reboots, so exit it here just 2247 * to be safe 2248 */ 2249 alps_exit_command_mode(psmouse); 2250 return -1; 2251 } 2252 2253 static int alps_get_v3_v7_resolution(struct psmouse *psmouse, int reg_pitch) 2254 { 2255 int reg, x_pitch, y_pitch, x_electrode, y_electrode, x_phys, y_phys; 2256 struct alps_data *priv = psmouse->private; 2257 2258 reg = alps_command_mode_read_reg(psmouse, reg_pitch); 2259 if (reg < 0) 2260 return reg; 2261 2262 x_pitch = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ 2263 x_pitch = 50 + 2 * x_pitch; /* In 0.1 mm units */ 2264 2265 y_pitch = (char)reg >> 4; /* sign extend upper 4 bits */ 2266 y_pitch = 36 + 2 * y_pitch; /* In 0.1 mm units */ 2267 2268 reg = alps_command_mode_read_reg(psmouse, reg_pitch + 1); 2269 if (reg < 0) 2270 return reg; 2271 2272 x_electrode = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ 2273 x_electrode = 17 + x_electrode; 2274 2275 y_electrode = (char)reg >> 4; /* sign extend upper 4 bits */ 2276 y_electrode = 13 + y_electrode; 2277 2278 x_phys = x_pitch * (x_electrode - 1); /* In 0.1 mm units */ 2279 y_phys = y_pitch * (y_electrode - 1); /* In 0.1 mm units */ 2280 2281 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ 2282 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ 2283 2284 psmouse_dbg(psmouse, 2285 "pitch %dx%d num-electrodes %dx%d physical size %dx%d mm res %dx%d\n", 2286 x_pitch, y_pitch, x_electrode, y_electrode, 2287 x_phys / 10, y_phys / 10, priv->x_res, priv->y_res); 2288 2289 return 0; 2290 } 2291 2292 static int alps_hw_init_rushmore_v3(struct psmouse *psmouse) 2293 { 2294 struct alps_data *priv = psmouse->private; 2295 struct ps2dev *ps2dev = &psmouse->ps2dev; 2296 int reg_val, ret = -1; 2297 2298 if (priv->flags & ALPS_DUALPOINT) { 2299 reg_val = alps_setup_trackstick_v3(psmouse, 2300 ALPS_REG_BASE_RUSHMORE); 2301 if (reg_val == -EIO) 2302 goto error; 2303 } 2304 2305 if (alps_enter_command_mode(psmouse) || 2306 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 || 2307 alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00)) 2308 goto error; 2309 2310 if (alps_get_v3_v7_resolution(psmouse, 0xc2da)) 2311 goto error; 2312 2313 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6); 2314 if (reg_val == -1) 2315 goto error; 2316 if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd)) 2317 goto error; 2318 2319 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 2320 goto error; 2321 2322 /* enter absolute mode */ 2323 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 2324 if (reg_val == -1) 2325 goto error; 2326 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 2327 goto error; 2328 2329 alps_exit_command_mode(psmouse); 2330 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2331 2332 error: 2333 alps_exit_command_mode(psmouse); 2334 return ret; 2335 } 2336 2337 /* Must be in command mode when calling this function */ 2338 static int alps_absolute_mode_v4(struct psmouse *psmouse) 2339 { 2340 int reg_val; 2341 2342 reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 2343 if (reg_val == -1) 2344 return -1; 2345 2346 reg_val |= 0x02; 2347 if (__alps_command_mode_write_reg(psmouse, reg_val)) 2348 return -1; 2349 2350 return 0; 2351 } 2352 2353 static int alps_hw_init_v4(struct psmouse *psmouse) 2354 { 2355 struct ps2dev *ps2dev = &psmouse->ps2dev; 2356 unsigned char param[4]; 2357 2358 if (alps_enter_command_mode(psmouse)) 2359 goto error; 2360 2361 if (alps_absolute_mode_v4(psmouse)) { 2362 psmouse_err(psmouse, "Failed to enter absolute mode\n"); 2363 goto error; 2364 } 2365 2366 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c)) 2367 goto error; 2368 2369 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03)) 2370 goto error; 2371 2372 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03)) 2373 goto error; 2374 2375 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15)) 2376 goto error; 2377 2378 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01)) 2379 goto error; 2380 2381 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03)) 2382 goto error; 2383 2384 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03)) 2385 goto error; 2386 2387 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03)) 2388 goto error; 2389 2390 alps_exit_command_mode(psmouse); 2391 2392 /* 2393 * This sequence changes the output from a 9-byte to an 2394 * 8-byte format. All the same data seems to be present, 2395 * just in a more compact format. 2396 */ 2397 param[0] = 0xc8; 2398 param[1] = 0x64; 2399 param[2] = 0x50; 2400 if (ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2401 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE) || 2402 ps2_command(ps2dev, ¶m[2], PSMOUSE_CMD_SETRATE) || 2403 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) 2404 return -1; 2405 2406 /* Set rate and enable data reporting */ 2407 param[0] = 0x64; 2408 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 2409 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 2410 psmouse_err(psmouse, "Failed to enable data reporting\n"); 2411 return -1; 2412 } 2413 2414 return 0; 2415 2416 error: 2417 /* 2418 * Leaving the touchpad in command mode will essentially render 2419 * it unusable until the machine reboots, so exit it here just 2420 * to be safe 2421 */ 2422 alps_exit_command_mode(psmouse); 2423 return -1; 2424 } 2425 2426 static int alps_get_otp_values_ss4_v2(struct psmouse *psmouse, 2427 unsigned char index, unsigned char otp[]) 2428 { 2429 struct ps2dev *ps2dev = &psmouse->ps2dev; 2430 2431 switch (index) { 2432 case 0: 2433 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2434 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2435 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) 2436 return -1; 2437 2438 break; 2439 2440 case 1: 2441 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2442 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2443 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) 2444 return -1; 2445 2446 break; 2447 } 2448 2449 return 0; 2450 } 2451 2452 static int alps_update_device_area_ss4_v2(unsigned char otp[][4], 2453 struct alps_data *priv) 2454 { 2455 int num_x_electrode; 2456 int num_y_electrode; 2457 int x_pitch, y_pitch, x_phys, y_phys; 2458 2459 num_x_electrode = SS4_NUMSENSOR_XOFFSET + (otp[1][0] & 0x0F); 2460 num_y_electrode = SS4_NUMSENSOR_YOFFSET + ((otp[1][0] >> 4) & 0x0F); 2461 2462 priv->x_max = (num_x_electrode - 1) * SS4_COUNT_PER_ELECTRODE; 2463 priv->y_max = (num_y_electrode - 1) * SS4_COUNT_PER_ELECTRODE; 2464 2465 x_pitch = ((otp[1][2] >> 2) & 0x07) + SS4_MIN_PITCH_MM; 2466 y_pitch = ((otp[1][2] >> 5) & 0x07) + SS4_MIN_PITCH_MM; 2467 2468 x_phys = x_pitch * (num_x_electrode - 1); /* In 0.1 mm units */ 2469 y_phys = y_pitch * (num_y_electrode - 1); /* In 0.1 mm units */ 2470 2471 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ 2472 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ 2473 2474 return 0; 2475 } 2476 2477 static int alps_update_btn_info_ss4_v2(unsigned char otp[][4], 2478 struct alps_data *priv) 2479 { 2480 unsigned char is_btnless; 2481 2482 is_btnless = (otp[1][1] >> 3) & 0x01; 2483 2484 if (is_btnless) 2485 priv->flags |= ALPS_BUTTONPAD; 2486 2487 return 0; 2488 } 2489 2490 static int alps_set_defaults_ss4_v2(struct psmouse *psmouse, 2491 struct alps_data *priv) 2492 { 2493 unsigned char otp[2][4]; 2494 2495 memset(otp, 0, sizeof(otp)); 2496 2497 if (alps_get_otp_values_ss4_v2(psmouse, 0, &otp[0][0]) || 2498 alps_get_otp_values_ss4_v2(psmouse, 1, &otp[1][0])) 2499 return -1; 2500 2501 alps_update_device_area_ss4_v2(otp, priv); 2502 2503 alps_update_btn_info_ss4_v2(otp, priv); 2504 2505 return 0; 2506 } 2507 2508 static int alps_dolphin_get_device_area(struct psmouse *psmouse, 2509 struct alps_data *priv) 2510 { 2511 struct ps2dev *ps2dev = &psmouse->ps2dev; 2512 unsigned char param[4] = {0}; 2513 int num_x_electrode, num_y_electrode; 2514 2515 if (alps_enter_command_mode(psmouse)) 2516 return -1; 2517 2518 param[0] = 0x0a; 2519 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 2520 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2521 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2522 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2523 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE)) 2524 return -1; 2525 2526 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 2527 return -1; 2528 2529 /* 2530 * Dolphin's sensor line number is not fixed. It can be calculated 2531 * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET. 2532 * Further more, we can get device's x_max and y_max by multiplying 2533 * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE. 2534 * 2535 * e.g. When we get register's sensor_x = 11 & sensor_y = 8, 2536 * real sensor line number X = 11 + 8 = 19, and 2537 * real sensor line number Y = 8 + 1 = 9. 2538 * So, x_max = (19 - 1) * 64 = 1152, and 2539 * y_max = (9 - 1) * 64 = 512. 2540 */ 2541 num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F); 2542 num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F); 2543 priv->x_bits = num_x_electrode; 2544 priv->y_bits = num_y_electrode; 2545 priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2546 priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2547 2548 if (alps_exit_command_mode(psmouse)) 2549 return -1; 2550 2551 return 0; 2552 } 2553 2554 static int alps_hw_init_dolphin_v1(struct psmouse *psmouse) 2555 { 2556 struct ps2dev *ps2dev = &psmouse->ps2dev; 2557 unsigned char param[2]; 2558 2559 /* This is dolphin "v1" as empirically defined by florin9doi */ 2560 param[0] = 0x64; 2561 param[1] = 0x28; 2562 2563 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2564 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2565 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 2566 return -1; 2567 2568 return 0; 2569 } 2570 2571 static int alps_hw_init_v7(struct psmouse *psmouse) 2572 { 2573 struct ps2dev *ps2dev = &psmouse->ps2dev; 2574 int reg_val, ret = -1; 2575 2576 if (alps_enter_command_mode(psmouse) || 2577 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1) 2578 goto error; 2579 2580 if (alps_get_v3_v7_resolution(psmouse, 0xc397)) 2581 goto error; 2582 2583 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 2584 goto error; 2585 2586 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 2587 if (reg_val == -1) 2588 goto error; 2589 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 2590 goto error; 2591 2592 alps_exit_command_mode(psmouse); 2593 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2594 2595 error: 2596 alps_exit_command_mode(psmouse); 2597 return ret; 2598 } 2599 2600 static int alps_hw_init_ss4_v2(struct psmouse *psmouse) 2601 { 2602 struct ps2dev *ps2dev = &psmouse->ps2dev; 2603 char param[2] = {0x64, 0x28}; 2604 int ret = -1; 2605 2606 /* enter absolute mode */ 2607 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2608 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 2609 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2610 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) { 2611 goto error; 2612 } 2613 2614 /* T.B.D. Decread noise packet number, delete in the future */ 2615 if (alps_exit_command_mode(psmouse) || 2616 alps_enter_command_mode(psmouse) || 2617 alps_command_mode_write_reg(psmouse, 0x001D, 0x20)) { 2618 goto error; 2619 } 2620 alps_exit_command_mode(psmouse); 2621 2622 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 2623 2624 error: 2625 alps_exit_command_mode(psmouse); 2626 return ret; 2627 } 2628 2629 static int alps_set_protocol(struct psmouse *psmouse, 2630 struct alps_data *priv, 2631 const struct alps_protocol_info *protocol) 2632 { 2633 psmouse->private = priv; 2634 2635 setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse); 2636 2637 priv->proto_version = protocol->version; 2638 priv->byte0 = protocol->byte0; 2639 priv->mask0 = protocol->mask0; 2640 priv->flags = protocol->flags; 2641 2642 priv->x_max = 2000; 2643 priv->y_max = 1400; 2644 priv->x_bits = 15; 2645 priv->y_bits = 11; 2646 2647 switch (priv->proto_version) { 2648 case ALPS_PROTO_V1: 2649 case ALPS_PROTO_V2: 2650 priv->hw_init = alps_hw_init_v1_v2; 2651 priv->process_packet = alps_process_packet_v1_v2; 2652 priv->set_abs_params = alps_set_abs_params_st; 2653 priv->x_max = 1023; 2654 priv->y_max = 767; 2655 if (dmi_check_system(alps_dmi_has_separate_stick_buttons)) 2656 priv->flags |= ALPS_STICK_BITS; 2657 break; 2658 2659 case ALPS_PROTO_V3: 2660 priv->hw_init = alps_hw_init_v3; 2661 priv->process_packet = alps_process_packet_v3; 2662 priv->set_abs_params = alps_set_abs_params_semi_mt; 2663 priv->decode_fields = alps_decode_pinnacle; 2664 priv->nibble_commands = alps_v3_nibble_commands; 2665 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2666 2667 if (alps_probe_trackstick_v3_v7(psmouse, 2668 ALPS_REG_BASE_PINNACLE) < 0) 2669 priv->flags &= ~ALPS_DUALPOINT; 2670 2671 break; 2672 2673 case ALPS_PROTO_V3_RUSHMORE: 2674 priv->hw_init = alps_hw_init_rushmore_v3; 2675 priv->process_packet = alps_process_packet_v3; 2676 priv->set_abs_params = alps_set_abs_params_semi_mt; 2677 priv->decode_fields = alps_decode_rushmore; 2678 priv->nibble_commands = alps_v3_nibble_commands; 2679 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2680 priv->x_bits = 16; 2681 priv->y_bits = 12; 2682 2683 if (alps_probe_trackstick_v3_v7(psmouse, 2684 ALPS_REG_BASE_RUSHMORE) < 0) 2685 priv->flags &= ~ALPS_DUALPOINT; 2686 2687 break; 2688 2689 case ALPS_PROTO_V4: 2690 priv->hw_init = alps_hw_init_v4; 2691 priv->process_packet = alps_process_packet_v4; 2692 priv->set_abs_params = alps_set_abs_params_semi_mt; 2693 priv->nibble_commands = alps_v4_nibble_commands; 2694 priv->addr_command = PSMOUSE_CMD_DISABLE; 2695 break; 2696 2697 case ALPS_PROTO_V5: 2698 priv->hw_init = alps_hw_init_dolphin_v1; 2699 priv->process_packet = alps_process_touchpad_packet_v3_v5; 2700 priv->decode_fields = alps_decode_dolphin; 2701 priv->set_abs_params = alps_set_abs_params_semi_mt; 2702 priv->nibble_commands = alps_v3_nibble_commands; 2703 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2704 priv->x_bits = 23; 2705 priv->y_bits = 12; 2706 2707 if (alps_dolphin_get_device_area(psmouse, priv)) 2708 return -EIO; 2709 2710 break; 2711 2712 case ALPS_PROTO_V6: 2713 priv->hw_init = alps_hw_init_v6; 2714 priv->process_packet = alps_process_packet_v6; 2715 priv->set_abs_params = alps_set_abs_params_st; 2716 priv->nibble_commands = alps_v6_nibble_commands; 2717 priv->x_max = 2047; 2718 priv->y_max = 1535; 2719 break; 2720 2721 case ALPS_PROTO_V7: 2722 priv->hw_init = alps_hw_init_v7; 2723 priv->process_packet = alps_process_packet_v7; 2724 priv->decode_fields = alps_decode_packet_v7; 2725 priv->set_abs_params = alps_set_abs_params_v7; 2726 priv->nibble_commands = alps_v3_nibble_commands; 2727 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2728 priv->x_max = 0xfff; 2729 priv->y_max = 0x7ff; 2730 2731 if (priv->fw_ver[1] != 0xba) 2732 priv->flags |= ALPS_BUTTONPAD; 2733 2734 if (alps_probe_trackstick_v3_v7(psmouse, ALPS_REG_BASE_V7) < 0) 2735 priv->flags &= ~ALPS_DUALPOINT; 2736 2737 break; 2738 2739 case ALPS_PROTO_V8: 2740 priv->hw_init = alps_hw_init_ss4_v2; 2741 priv->process_packet = alps_process_packet_ss4_v2; 2742 priv->decode_fields = alps_decode_ss4_v2; 2743 priv->set_abs_params = alps_set_abs_params_ss4_v2; 2744 priv->nibble_commands = alps_v3_nibble_commands; 2745 priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2746 2747 if (alps_set_defaults_ss4_v2(psmouse, priv)) 2748 return -EIO; 2749 2750 if (priv->fw_ver[1] == 0x1) 2751 priv->flags |= ALPS_DUALPOINT | 2752 ALPS_DUALPOINT_WITH_PRESSURE; 2753 2754 break; 2755 } 2756 2757 return 0; 2758 } 2759 2760 static const struct alps_protocol_info *alps_match_table(unsigned char *e7, 2761 unsigned char *ec) 2762 { 2763 const struct alps_model_info *model; 2764 int i; 2765 2766 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) { 2767 model = &alps_model_data[i]; 2768 2769 if (!memcmp(e7, model->signature, sizeof(model->signature)) && 2770 (!model->command_mode_resp || 2771 model->command_mode_resp == ec[2])) { 2772 2773 return &model->protocol_info; 2774 } 2775 } 2776 2777 return NULL; 2778 } 2779 2780 static int alps_identify(struct psmouse *psmouse, struct alps_data *priv) 2781 { 2782 const struct alps_protocol_info *protocol; 2783 unsigned char e6[4], e7[4], ec[4]; 2784 int error; 2785 2786 /* 2787 * First try "E6 report". 2788 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed. 2789 * The bits 0-2 of the first byte will be 1s if some buttons are 2790 * pressed. 2791 */ 2792 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2793 PSMOUSE_CMD_SETSCALE11, e6)) 2794 return -EIO; 2795 2796 if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100)) 2797 return -EINVAL; 2798 2799 /* 2800 * Now get the "E7" and "EC" reports. These will uniquely identify 2801 * most ALPS touchpads. 2802 */ 2803 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2804 PSMOUSE_CMD_SETSCALE21, e7) || 2805 alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2806 PSMOUSE_CMD_RESET_WRAP, ec) || 2807 alps_exit_command_mode(psmouse)) 2808 return -EIO; 2809 2810 protocol = alps_match_table(e7, ec); 2811 if (!protocol) { 2812 if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 && 2813 ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) { 2814 protocol = &alps_v5_protocol_data; 2815 } else if (ec[0] == 0x88 && 2816 ((ec[1] & 0xf0) == 0xb0 || (ec[1] & 0xf0) == 0xc0)) { 2817 protocol = &alps_v7_protocol_data; 2818 } else if (ec[0] == 0x88 && ec[1] == 0x08) { 2819 protocol = &alps_v3_rushmore_data; 2820 } else if (ec[0] == 0x88 && ec[1] == 0x07 && 2821 ec[2] >= 0x90 && ec[2] <= 0x9d) { 2822 protocol = &alps_v3_protocol_data; 2823 } else if (e7[0] == 0x73 && e7[1] == 0x03 && 2824 e7[2] == 0x14 && ec[1] == 0x02) { 2825 protocol = &alps_v8_protocol_data; 2826 } else if (e7[0] == 0x73 && e7[1] == 0x03 && 2827 e7[2] == 0x28 && ec[1] == 0x01) { 2828 protocol = &alps_v8_protocol_data; 2829 } else { 2830 psmouse_dbg(psmouse, 2831 "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec); 2832 return -EINVAL; 2833 } 2834 } 2835 2836 if (priv) { 2837 /* Save the Firmware version */ 2838 memcpy(priv->fw_ver, ec, 3); 2839 error = alps_set_protocol(psmouse, priv, protocol); 2840 if (error) 2841 return error; 2842 } 2843 2844 return 0; 2845 } 2846 2847 static int alps_reconnect(struct psmouse *psmouse) 2848 { 2849 struct alps_data *priv = psmouse->private; 2850 2851 psmouse_reset(psmouse); 2852 2853 if (alps_identify(psmouse, priv) < 0) 2854 return -1; 2855 2856 return priv->hw_init(psmouse); 2857 } 2858 2859 static void alps_disconnect(struct psmouse *psmouse) 2860 { 2861 struct alps_data *priv = psmouse->private; 2862 2863 psmouse_reset(psmouse); 2864 del_timer_sync(&priv->timer); 2865 if (priv->dev2) 2866 input_unregister_device(priv->dev2); 2867 if (!IS_ERR_OR_NULL(priv->dev3)) 2868 input_unregister_device(priv->dev3); 2869 kfree(priv); 2870 } 2871 2872 static void alps_set_abs_params_st(struct alps_data *priv, 2873 struct input_dev *dev1) 2874 { 2875 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0); 2876 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0); 2877 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2878 } 2879 2880 static void alps_set_abs_params_mt_common(struct alps_data *priv, 2881 struct input_dev *dev1) 2882 { 2883 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0); 2884 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0); 2885 2886 input_abs_set_res(dev1, ABS_MT_POSITION_X, priv->x_res); 2887 input_abs_set_res(dev1, ABS_MT_POSITION_Y, priv->y_res); 2888 2889 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit); 2890 set_bit(BTN_TOOL_QUADTAP, dev1->keybit); 2891 } 2892 2893 static void alps_set_abs_params_semi_mt(struct alps_data *priv, 2894 struct input_dev *dev1) 2895 { 2896 alps_set_abs_params_mt_common(priv, dev1); 2897 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2898 2899 input_mt_init_slots(dev1, MAX_TOUCHES, 2900 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 2901 INPUT_MT_SEMI_MT); 2902 } 2903 2904 static void alps_set_abs_params_v7(struct alps_data *priv, 2905 struct input_dev *dev1) 2906 { 2907 alps_set_abs_params_mt_common(priv, dev1); 2908 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2909 2910 input_mt_init_slots(dev1, MAX_TOUCHES, 2911 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 2912 INPUT_MT_TRACK); 2913 2914 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2915 } 2916 2917 static void alps_set_abs_params_ss4_v2(struct alps_data *priv, 2918 struct input_dev *dev1) 2919 { 2920 alps_set_abs_params_mt_common(priv, dev1); 2921 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 2922 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 2923 2924 input_mt_init_slots(dev1, MAX_TOUCHES, 2925 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 2926 INPUT_MT_TRACK); 2927 } 2928 2929 int alps_init(struct psmouse *psmouse) 2930 { 2931 struct alps_data *priv = psmouse->private; 2932 struct input_dev *dev1 = psmouse->dev; 2933 int error; 2934 2935 error = priv->hw_init(psmouse); 2936 if (error) 2937 goto init_fail; 2938 2939 /* 2940 * Undo part of setup done for us by psmouse core since touchpad 2941 * is not a relative device. 2942 */ 2943 __clear_bit(EV_REL, dev1->evbit); 2944 __clear_bit(REL_X, dev1->relbit); 2945 __clear_bit(REL_Y, dev1->relbit); 2946 2947 /* 2948 * Now set up our capabilities. 2949 */ 2950 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY); 2951 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH); 2952 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER); 2953 dev1->keybit[BIT_WORD(BTN_LEFT)] |= 2954 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); 2955 2956 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS); 2957 2958 priv->set_abs_params(priv, dev1); 2959 2960 if (priv->flags & ALPS_WHEEL) { 2961 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL); 2962 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL); 2963 } 2964 2965 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 2966 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD); 2967 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK); 2968 } 2969 2970 if (priv->flags & ALPS_FOUR_BUTTONS) { 2971 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0); 2972 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1); 2973 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2); 2974 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3); 2975 } else if (priv->flags & ALPS_BUTTONPAD) { 2976 set_bit(INPUT_PROP_BUTTONPAD, dev1->propbit); 2977 clear_bit(BTN_RIGHT, dev1->keybit); 2978 } else { 2979 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE); 2980 } 2981 2982 if (priv->flags & ALPS_DUALPOINT) { 2983 struct input_dev *dev2; 2984 2985 dev2 = input_allocate_device(); 2986 if (!dev2) { 2987 psmouse_err(psmouse, 2988 "failed to allocate trackstick device\n"); 2989 error = -ENOMEM; 2990 goto init_fail; 2991 } 2992 2993 snprintf(priv->phys2, sizeof(priv->phys2), "%s/input1", 2994 psmouse->ps2dev.serio->phys); 2995 dev2->phys = priv->phys2; 2996 2997 /* 2998 * format of input device name is: "protocol vendor name" 2999 * see function psmouse_switch_protocol() in psmouse-base.c 3000 */ 3001 dev2->name = "AlpsPS/2 ALPS DualPoint Stick"; 3002 3003 dev2->id.bustype = BUS_I8042; 3004 dev2->id.vendor = 0x0002; 3005 dev2->id.product = PSMOUSE_ALPS; 3006 dev2->id.version = priv->proto_version; 3007 dev2->dev.parent = &psmouse->ps2dev.serio->dev; 3008 3009 input_set_capability(dev2, EV_REL, REL_X); 3010 input_set_capability(dev2, EV_REL, REL_Y); 3011 if (priv->flags & ALPS_DUALPOINT_WITH_PRESSURE) { 3012 input_set_capability(dev2, EV_ABS, ABS_PRESSURE); 3013 input_set_abs_params(dev2, ABS_PRESSURE, 0, 127, 0, 0); 3014 } 3015 input_set_capability(dev2, EV_KEY, BTN_LEFT); 3016 input_set_capability(dev2, EV_KEY, BTN_RIGHT); 3017 input_set_capability(dev2, EV_KEY, BTN_MIDDLE); 3018 3019 __set_bit(INPUT_PROP_POINTER, dev2->propbit); 3020 __set_bit(INPUT_PROP_POINTING_STICK, dev2->propbit); 3021 3022 error = input_register_device(dev2); 3023 if (error) { 3024 psmouse_err(psmouse, 3025 "failed to register trackstick device: %d\n", 3026 error); 3027 input_free_device(dev2); 3028 goto init_fail; 3029 } 3030 3031 priv->dev2 = dev2; 3032 } 3033 3034 priv->psmouse = psmouse; 3035 3036 INIT_DELAYED_WORK(&priv->dev3_register_work, 3037 alps_register_bare_ps2_mouse); 3038 3039 psmouse->protocol_handler = alps_process_byte; 3040 psmouse->poll = alps_poll; 3041 psmouse->disconnect = alps_disconnect; 3042 psmouse->reconnect = alps_reconnect; 3043 psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6; 3044 3045 /* We are having trouble resyncing ALPS touchpads so disable it for now */ 3046 psmouse->resync_time = 0; 3047 3048 /* Allow 2 invalid packets without resetting device */ 3049 psmouse->resetafter = psmouse->pktsize * 2; 3050 3051 return 0; 3052 3053 init_fail: 3054 psmouse_reset(psmouse); 3055 /* 3056 * Even though we did not allocate psmouse->private we do free 3057 * it here. 3058 */ 3059 kfree(psmouse->private); 3060 psmouse->private = NULL; 3061 return error; 3062 } 3063 3064 int alps_detect(struct psmouse *psmouse, bool set_properties) 3065 { 3066 struct alps_data *priv; 3067 int error; 3068 3069 error = alps_identify(psmouse, NULL); 3070 if (error) 3071 return error; 3072 3073 /* 3074 * Reset the device to make sure it is fully operational: 3075 * on some laptops, like certain Dell Latitudes, we may 3076 * fail to properly detect presence of trackstick if device 3077 * has not been reset. 3078 */ 3079 psmouse_reset(psmouse); 3080 3081 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL); 3082 if (!priv) 3083 return -ENOMEM; 3084 3085 error = alps_identify(psmouse, priv); 3086 if (error) { 3087 kfree(priv); 3088 return error; 3089 } 3090 3091 if (set_properties) { 3092 psmouse->vendor = "ALPS"; 3093 psmouse->name = priv->flags & ALPS_DUALPOINT ? 3094 "DualPoint TouchPad" : "GlidePoint"; 3095 psmouse->model = priv->proto_version; 3096 } else { 3097 /* 3098 * Destroy alps_data structure we allocated earlier since 3099 * this was just a "trial run". Otherwise we'll keep it 3100 * to be used by alps_init() which has to be called if 3101 * we succeed and set_properties is true. 3102 */ 3103 kfree(priv); 3104 psmouse->private = NULL; 3105 } 3106 3107 return 0; 3108 } 3109 3110