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Input: alps - document stick behavior for protocol V2
[deliverable/linux.git] / drivers / input / mouse / elantech.c
CommitLineData
2a0bd75e 1/*
3f8c0df4 2 * Elantech Touchpad driver (v6)
2a0bd75e 3 *
3f8c0df4 4 * Copyright (C) 2007-2009 Arjan Opmeer <arjan@opmeer.net>
2a0bd75e
AO		 5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published
8 * by the Free Software Foundation.
9 *
10 * Trademarks are the property of their respective owners.
11 */
12
13#include <linux/delay.h>
36189cc3 14#include <linux/dmi.h>
5a0e3ad6 15#include <linux/slab.h>
2a0bd75e
AO		 16#include <linux/module.h>
17#include <linux/input.h>
89eec4d7 18#include <linux/input/mt.h>
2a0bd75e
AO		 19#include <linux/serio.h>
20#include <linux/libps2.h>
a2418fc4 21#include <asm/unaligned.h>
2a0bd75e
AO		 22#include "psmouse.h"
23#include "elantech.h"
24
d4ae84a8
DT		 25#define elantech_debug(fmt, ...) \
26 do { \
27 if (etd->debug) \
b5d21704
DT		 28 psmouse_printk(KERN_DEBUG, psmouse, \
29 fmt, ##__VA_ARGS__); \
2a0bd75e
AO		 30 } while (0)
31
32/*
33 * Send a Synaptics style sliced query command
34 */
35static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c,
36 unsigned char *param)
37{
38 if (psmouse_sliced_command(psmouse, c) ||
39 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) {
b5d21704 40 psmouse_err(psmouse, "%s query 0x%02x failed.\n", __func__, c);
2a0bd75e
AO		 41 return -1;
42 }
43
44 return 0;
45}
46
b56b92a9
JD		 47/*
48 * V3 and later support this fast command
49 */
50static int elantech_send_cmd(struct psmouse *psmouse, unsigned char c,
51 unsigned char *param)
52{
53 struct ps2dev *ps2dev = &psmouse->ps2dev;
54
55 if (ps2_command(ps2dev, NULL, ETP_PS2_CUSTOM_COMMAND) ||
56 ps2_command(ps2dev, NULL, c) ||
57 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) {
58 psmouse_err(psmouse, "%s query 0x%02x failed.\n", __func__, c);
59 return -1;
60 }
61
62 return 0;
63}
64
2a0bd75e
AO		 65/*
66 * A retrying version of ps2_command
67 */
68static int elantech_ps2_command(struct psmouse *psmouse,
69 unsigned char *param, int command)
70{
71 struct ps2dev *ps2dev = &psmouse->ps2dev;
72 struct elantech_data *etd = psmouse->private;
73 int rc;
74 int tries = ETP_PS2_COMMAND_TRIES;
75
76 do {
77 rc = ps2_command(ps2dev, param, command);
78 if (rc == 0)
79 break;
80 tries--;
d4ae84a8
DT		 81 elantech_debug("retrying ps2 command 0x%02x (%d).\n",
82 command, tries);
2a0bd75e
AO		 83 msleep(ETP_PS2_COMMAND_DELAY);
84 } while (tries > 0);
85
86 if (rc)
b5d21704 87 psmouse_err(psmouse, "ps2 command 0x%02x failed.\n", command);
2a0bd75e
AO		 88
89 return rc;
90}
91
92/*
93 * Send an Elantech style special command to read a value from a register
94 */
95static int elantech_read_reg(struct psmouse *psmouse, unsigned char reg,
96 unsigned char *val)
97{
98 struct elantech_data *etd = psmouse->private;
99 unsigned char param[3];
100 int rc = 0;
101
1dc6edec 102 if (reg < 0x07 || reg > 0x26)
2a0bd75e
AO		 103 return -1;
104
105 if (reg > 0x11 && reg < 0x20)
106 return -1;
107
108 switch (etd->hw_version) {
109 case 1:
110 if (psmouse_sliced_command(psmouse, ETP_REGISTER_READ) ||
111 psmouse_sliced_command(psmouse, reg) ||
112 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) {
113 rc = -1;
114 }
115 break;
116
117 case 2:
118 if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
119 elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READ) ||
120 elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
121 elantech_ps2_command(psmouse, NULL, reg) ||
122 elantech_ps2_command(psmouse, param, PSMOUSE_CMD_GETINFO)) {
123 rc = -1;
124 }
125 break;
28f49616 126
1dc6edec 127 case 3 ... 4:
28f49616
JD		 128 if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
129 elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READWRITE) ||
130 elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
131 elantech_ps2_command(psmouse, NULL, reg) ||
132 elantech_ps2_command(psmouse, param, PSMOUSE_CMD_GETINFO)) {
133 rc = -1;
134 }
135 break;
2a0bd75e
AO		 136 }
137
138 if (rc)
b5d21704 139 psmouse_err(psmouse, "failed to read register 0x%02x.\n", reg);
1dc6edec 140 else if (etd->hw_version != 4)
2a0bd75e 141 *val = param[0];
1dc6edec
JD		 142 else
143 *val = param[1];
2a0bd75e
AO		 144
145 return rc;
146}
147
148/*
149 * Send an Elantech style special command to write a register with a value
150 */
151static int elantech_write_reg(struct psmouse *psmouse, unsigned char reg,
152 unsigned char val)
153{
154 struct elantech_data *etd = psmouse->private;
155 int rc = 0;
156
1dc6edec 157 if (reg < 0x07 || reg > 0x26)
2a0bd75e
AO		 158 return -1;
159
160 if (reg > 0x11 && reg < 0x20)
161 return -1;
162
163 switch (etd->hw_version) {
164 case 1:
165 if (psmouse_sliced_command(psmouse, ETP_REGISTER_WRITE) ||
166 psmouse_sliced_command(psmouse, reg) ||
167 psmouse_sliced_command(psmouse, val) ||
168 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11)) {
169 rc = -1;
170 }
171 break;
172
173 case 2:
174 if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
175 elantech_ps2_command(psmouse, NULL, ETP_REGISTER_WRITE) ||
176 elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
177 elantech_ps2_command(psmouse, NULL, reg) ||
178 elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
179 elantech_ps2_command(psmouse, NULL, val) ||
180 elantech_ps2_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11)) {
181 rc = -1;
182 }
183 break;
28f49616
JD		 184
185 case 3:
186 if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
187 elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READWRITE) ||
188 elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
189 elantech_ps2_command(psmouse, NULL, reg) ||
190 elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
191 elantech_ps2_command(psmouse, NULL, val) ||
192 elantech_ps2_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11)) {
193 rc = -1;
194 }
195 break;
1dc6edec
JD		 196
197 case 4:
198 if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
199 elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READWRITE) ||
200 elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
201 elantech_ps2_command(psmouse, NULL, reg) ||
202 elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
203 elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READWRITE) ||
204 elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
205 elantech_ps2_command(psmouse, NULL, val) ||
206 elantech_ps2_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11)) {
207 rc = -1;
208 }
209 break;
2a0bd75e
AO		 210 }
211
212 if (rc)
b5d21704
DT		 213 psmouse_err(psmouse,
214 "failed to write register 0x%02x with value 0x%02x.\n",
215 reg, val);
2a0bd75e
AO		 216
217 return rc;
218}
219
220/*
221 * Dump a complete mouse movement packet to the syslog
222 */
b5d21704 223static void elantech_packet_dump(struct psmouse *psmouse)
2a0bd75e
AO		 224{
225 int i;
226
b5d21704
DT		 227 psmouse_printk(KERN_DEBUG, psmouse, "PS/2 packet [");
228 for (i = 0; i < psmouse->pktsize; i++)
229 printk("%s0x%02x ", i ? ", " : " ", psmouse->packet[i]);
2a0bd75e
AO		 230 printk("]\n");
231}
232
233/*
234 * Interpret complete data packets and report absolute mode input events for
235 * hardware version 1. (4 byte packets)
236 */
237static void elantech_report_absolute_v1(struct psmouse *psmouse)
238{
239 struct input_dev *dev = psmouse->dev;
240 struct elantech_data *etd = psmouse->private;
241 unsigned char *packet = psmouse->packet;
242 int fingers;
243
504e8bee 244 if (etd->fw_version < 0x020000) {
e938fbfd
FR		 245 /*
246 * byte 0: D U p1 p2 1 p3 R L
247 * byte 1: f 0 th tw x9 x8 y9 y8
248 */
2a0bd75e
AO		 249 fingers = ((packet[1] & 0x80) >> 7) +
250 ((packet[1] & 0x30) >> 4);
251 } else {
e938fbfd
FR		 252 /*
253 * byte 0: n1 n0 p2 p1 1 p3 R L
254 * byte 1: 0 0 0 0 x9 x8 y9 y8
255 */
2a0bd75e
AO		 256 fingers = (packet[0] & 0xc0) >> 6;
257 }
258
3f8c0df4 259 if (etd->jumpy_cursor) {
7f29f17b
ÉP		 260 if (fingers != 1) {
261 etd->single_finger_reports = 0;
262 } else if (etd->single_finger_reports < 2) {
263 /* Discard first 2 reports of one finger, bogus */
264 etd->single_finger_reports++;
d4ae84a8 265 elantech_debug("discarding packet\n");
7f29f17b 266 return;
3f8c0df4
AO		 267 }
268 }
269
2a0bd75e
AO		 270 input_report_key(dev, BTN_TOUCH, fingers != 0);
271
e938fbfd
FR		 272 /*
273 * byte 2: x7 x6 x5 x4 x3 x2 x1 x0
274 * byte 3: y7 y6 y5 y4 y3 y2 y1 y0
275 */
2a0bd75e
AO		 276 if (fingers) {
277 input_report_abs(dev, ABS_X,
278 ((packet[1] & 0x0c) << 6) | packet[2]);
e938fbfd 279 input_report_abs(dev, ABS_Y,
230282a7 280 etd->y_max - (((packet[1] & 0x03) << 8) | packet[3]));
2a0bd75e
AO		 281 }
282
283 input_report_key(dev, BTN_TOOL_FINGER, fingers == 1);
284 input_report_key(dev, BTN_TOOL_DOUBLETAP, fingers == 2);
285 input_report_key(dev, BTN_TOOL_TRIPLETAP, fingers == 3);
286 input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
287 input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
288
504e8bee 289 if (etd->fw_version < 0x020000 &&
230282a7 290 (etd->capabilities[0] & ETP_CAP_HAS_ROCKER)) {
2a0bd75e
AO		 291 /* rocker up */
292 input_report_key(dev, BTN_FORWARD, packet[0] & 0x40);
293 /* rocker down */
294 input_report_key(dev, BTN_BACK, packet[0] & 0x80);
295 }
296
297 input_sync(dev);
298}
299
89eec4d7
ÉP		 300static void elantech_set_slot(struct input_dev *dev, int slot, bool active,
301 unsigned int x, unsigned int y)
302{
303 input_mt_slot(dev, slot);
304 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
305 if (active) {
306 input_report_abs(dev, ABS_MT_POSITION_X, x);
307 input_report_abs(dev, ABS_MT_POSITION_Y, y);
308 }
309}
310
311/* x1 < x2 and y1 < y2 when two fingers, x = y = 0 when not pressed */
312static void elantech_report_semi_mt_data(struct input_dev *dev,
313 unsigned int num_fingers,
314 unsigned int x1, unsigned int y1,
315 unsigned int x2, unsigned int y2)
316{
317 elantech_set_slot(dev, 0, num_fingers != 0, x1, y1);
318 elantech_set_slot(dev, 1, num_fingers == 2, x2, y2);
319}
320
2a0bd75e
AO		 321/*
322 * Interpret complete data packets and report absolute mode input events for
323 * hardware version 2. (6 byte packets)
324 */
325static void elantech_report_absolute_v2(struct psmouse *psmouse)
326{
f941c705 327 struct elantech_data *etd = psmouse->private;
2a0bd75e
AO		 328 struct input_dev *dev = psmouse->dev;
329 unsigned char *packet = psmouse->packet;
461a7917
JD		 330 unsigned int fingers, x1 = 0, y1 = 0, x2 = 0, y2 = 0;
331 unsigned int width = 0, pres = 0;
2a0bd75e
AO		 332
333 /* byte 0: n1 n0 . . . . R L */
334 fingers = (packet[0] & 0xc0) >> 6;
2a0bd75e
AO		 335
336 switch (fingers) {
22462d9f
ÉP		 337 case 3:
338 /*
339 * Same as one finger, except report of more than 3 fingers:
340 * byte 3: n4 . w1 w0 . . . .
341 */
342 if (packet[3] & 0x80)
343 fingers = 4;
344 /* pass through... */
2a0bd75e 345 case 1:
e938fbfd 346 /*
11559619 347 * byte 1: . . . . x11 x10 x9 x8
e938fbfd
FR		 348 * byte 2: x7 x6 x5 x4 x4 x2 x1 x0
349 */
11559619 350 x1 = ((packet[1] & 0x0f) << 8) | packet[2];
e938fbfd 351 /*
11559619 352 * byte 4: . . . . y11 y10 y9 y8
e938fbfd
FR		 353 * byte 5: y7 y6 y5 y4 y3 y2 y1 y0
354 */
230282a7 355 y1 = etd->y_max - (((packet[4] & 0x0f) << 8) | packet[5]);
89eec4d7 356
f941c705
ÉP		 357 pres = (packet[1] & 0xf0) | ((packet[4] & 0xf0) >> 4);
358 width = ((packet[0] & 0x30) >> 2) | ((packet[3] & 0x30) >> 4);
2a0bd75e
AO		 359 break;
360
361 case 2:
e938fbfd
FR		 362 /*
363 * The coordinate of each finger is reported separately
364 * with a lower resolution for two finger touches:
365 * byte 0: . . ay8 ax8 . . . .
366 * byte 1: ax7 ax6 ax5 ax4 ax3 ax2 ax1 ax0
367 */
461a7917 368 x1 = (((packet[0] & 0x10) << 4) | packet[1]) << 2;
2a0bd75e 369 /* byte 2: ay7 ay6 ay5 ay4 ay3 ay2 ay1 ay0 */
230282a7 370 y1 = etd->y_max -
461a7917 371 ((((packet[0] & 0x20) << 3) | packet[2]) << 2);
e938fbfd
FR		 372 /*
373 * byte 3: . . by8 bx8 . . . .
374 * byte 4: bx7 bx6 bx5 bx4 bx3 bx2 bx1 bx0
375 */
461a7917 376 x2 = (((packet[3] & 0x10) << 4) | packet[4]) << 2;
2a0bd75e 377 /* byte 5: by7 by8 by5 by4 by3 by2 by1 by0 */
230282a7 378 y2 = etd->y_max -
461a7917 379 ((((packet[3] & 0x20) << 3) | packet[5]) << 2);
f941c705
ÉP		 380
381 /* Unknown so just report sensible values */
382 pres = 127;
383 width = 7;
2a0bd75e
AO		 384 break;
385 }
386
461a7917
JD		 387 input_report_key(dev, BTN_TOUCH, fingers != 0);
388 if (fingers != 0) {
389 input_report_abs(dev, ABS_X, x1);
390 input_report_abs(dev, ABS_Y, y1);
391 }
89eec4d7 392 elantech_report_semi_mt_data(dev, fingers, x1, y1, x2, y2);
2a0bd75e
AO		 393 input_report_key(dev, BTN_TOOL_FINGER, fingers == 1);
394 input_report_key(dev, BTN_TOOL_DOUBLETAP, fingers == 2);
395 input_report_key(dev, BTN_TOOL_TRIPLETAP, fingers == 3);
22462d9f 396 input_report_key(dev, BTN_TOOL_QUADTAP, fingers == 4);
2a0bd75e
AO		 397 input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
398 input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
f941c705
ÉP		 399 if (etd->reports_pressure) {
400 input_report_abs(dev, ABS_PRESSURE, pres);
401 input_report_abs(dev, ABS_TOOL_WIDTH, width);
402 }
2a0bd75e
AO		 403
404 input_sync(dev);
405}
406
a2418fc4
UDB		 407static void elantech_report_trackpoint(struct psmouse *psmouse,
408 int packet_type)
409{
410 /*
411 * byte 0: 0 0 sx sy 0 M R L
412 * byte 1:~sx 0 0 0 0 0 0 0
413 * byte 2:~sy 0 0 0 0 0 0 0
414 * byte 3: 0 0 ~sy ~sx 0 1 1 0
415 * byte 4: x7 x6 x5 x4 x3 x2 x1 x0
416 * byte 5: y7 y6 y5 y4 y3 y2 y1 y0
417 *
418 * x and y are written in two's complement spread
419 * over 9 bits with sx/sy the relative top bit and
420 * x7..x0 and y7..y0 the lower bits.
421 * The sign of y is opposite to what the input driver
422 * expects for a relative movement
423 */
424
425 struct elantech_data *etd = psmouse->private;
426 struct input_dev *tp_dev = etd->tp_dev;
427 unsigned char *packet = psmouse->packet;
428 int x, y;
429 u32 t;
430
a2418fc4
UDB		 431 t = get_unaligned_le32(&packet[0]);
432
433 switch (t & ~7U) {
434 case 0x06000030U:
435 case 0x16008020U:
436 case 0x26800010U:
437 case 0x36808000U:
438 x = packet[4] - (int)((packet[1]^0x80) << 1);
439 y = (int)((packet[2]^0x80) << 1) - packet[5];
440
441 input_report_key(tp_dev, BTN_LEFT, packet[0] & 0x01);
442 input_report_key(tp_dev, BTN_RIGHT, packet[0] & 0x02);
443 input_report_key(tp_dev, BTN_MIDDLE, packet[0] & 0x04);
444
445 input_report_rel(tp_dev, REL_X, x);
446 input_report_rel(tp_dev, REL_Y, y);
447
448 input_sync(tp_dev);
449
450 break;
451
452 default:
453 /* Dump unexpected packet sequences if debug=1 (default) */
454 if (etd->debug == 1)
455 elantech_packet_dump(psmouse);
456
457 break;
458 }
459}
460
28f49616
JD		 461/*
462 * Interpret complete data packets and report absolute mode input events for
463 * hardware version 3. (12 byte packets for two fingers)
464 */
465static void elantech_report_absolute_v3(struct psmouse *psmouse,
466 int packet_type)
467{
468 struct input_dev *dev = psmouse->dev;
469 struct elantech_data *etd = psmouse->private;
470 unsigned char *packet = psmouse->packet;
471 unsigned int fingers = 0, x1 = 0, y1 = 0, x2 = 0, y2 = 0;
472 unsigned int width = 0, pres = 0;
473
474 /* byte 0: n1 n0 . . . . R L */
475 fingers = (packet[0] & 0xc0) >> 6;
476
477 switch (fingers) {
478 case 3:
479 case 1:
480 /*
481 * byte 1: . . . . x11 x10 x9 x8
482 * byte 2: x7 x6 x5 x4 x4 x2 x1 x0
483 */
484 x1 = ((packet[1] & 0x0f) << 8) | packet[2];
485 /*
486 * byte 4: . . . . y11 y10 y9 y8
487 * byte 5: y7 y6 y5 y4 y3 y2 y1 y0
488 */
489 y1 = etd->y_max - (((packet[4] & 0x0f) << 8) | packet[5]);
490 break;
491
492 case 2:
493 if (packet_type == PACKET_V3_HEAD) {
494 /*
495 * byte 1: . . . . ax11 ax10 ax9 ax8
496 * byte 2: ax7 ax6 ax5 ax4 ax3 ax2 ax1 ax0
497 */
1dc6edec 498 etd->mt[0].x = ((packet[1] & 0x0f) << 8) | packet[2];
28f49616
JD		 499 /*
500 * byte 4: . . . . ay11 ay10 ay9 ay8
501 * byte 5: ay7 ay6 ay5 ay4 ay3 ay2 ay1 ay0
502 */
1dc6edec 503 etd->mt[0].y = etd->y_max -
28f49616
JD		 504 (((packet[4] & 0x0f) << 8) | packet[5]);
505 /*
506 * wait for next packet
507 */
508 return;
509 }
510
511 /* packet_type == PACKET_V3_TAIL */
1dc6edec
JD		 512 x1 = etd->mt[0].x;
513 y1 = etd->mt[0].y;
28f49616
JD		 514 x2 = ((packet[1] & 0x0f) << 8) | packet[2];
515 y2 = etd->y_max - (((packet[4] & 0x0f) << 8) | packet[5]);
516 break;
517 }
518
519 pres = (packet[1] & 0xf0) | ((packet[4] & 0xf0) >> 4);
520 width = ((packet[0] & 0x30) >> 2) | ((packet[3] & 0x30) >> 4);
521
522 input_report_key(dev, BTN_TOUCH, fingers != 0);
523 if (fingers != 0) {
524 input_report_abs(dev, ABS_X, x1);
525 input_report_abs(dev, ABS_Y, y1);
526 }
527 elantech_report_semi_mt_data(dev, fingers, x1, y1, x2, y2);
528 input_report_key(dev, BTN_TOOL_FINGER, fingers == 1);
529 input_report_key(dev, BTN_TOOL_DOUBLETAP, fingers == 2);
530 input_report_key(dev, BTN_TOOL_TRIPLETAP, fingers == 3);
cd9e83e2
HG		 531
532 /* For clickpads map both buttons to BTN_LEFT */
533 if (etd->fw_version & 0x001000) {
534 input_report_key(dev, BTN_LEFT, packet[0] & 0x03);
535 } else {
536 input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
537 input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
538 }
539
28f49616
JD		 540 input_report_abs(dev, ABS_PRESSURE, pres);
541 input_report_abs(dev, ABS_TOOL_WIDTH, width);
542
543 input_sync(dev);
544}
545
1dc6edec
JD		 546static void elantech_input_sync_v4(struct psmouse *psmouse)
547{
548 struct input_dev *dev = psmouse->dev;
cd9e83e2 549 struct elantech_data *etd = psmouse->private;
1dc6edec
JD		 550 unsigned char *packet = psmouse->packet;
551
cd9e83e2
HG		 552 /* For clickpads map both buttons to BTN_LEFT */
553 if (etd->fw_version & 0x001000) {
554 input_report_key(dev, BTN_LEFT, packet[0] & 0x03);
555 } else {
556 input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
557 input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
f386474e 558 input_report_key(dev, BTN_MIDDLE, packet[0] & 0x04);
cd9e83e2
HG		 559 }
560
1dc6edec
JD		 561 input_mt_report_pointer_emulation(dev, true);
562 input_sync(dev);
563}
564
565static void process_packet_status_v4(struct psmouse *psmouse)
566{
567 struct input_dev *dev = psmouse->dev;
568 unsigned char *packet = psmouse->packet;
569 unsigned fingers;
570 int i;
571
572 /* notify finger state change */
573 fingers = packet[1] & 0x1f;
574 for (i = 0; i < ETP_MAX_FINGERS; i++) {
575 if ((fingers & (1 << i)) == 0) {
576 input_mt_slot(dev, i);
577 input_mt_report_slot_state(dev, MT_TOOL_FINGER, false);
578 }
579 }
580
581 elantech_input_sync_v4(psmouse);
582}
583
584static void process_packet_head_v4(struct psmouse *psmouse)
585{
586 struct input_dev *dev = psmouse->dev;
587 struct elantech_data *etd = psmouse->private;
588 unsigned char *packet = psmouse->packet;
589 int id = ((packet[3] & 0xe0) >> 5) - 1;
590 int pres, traces;
591
592 if (id < 0)
593 return;
594
595 etd->mt[id].x = ((packet[1] & 0x0f) << 8) | packet[2];
596 etd->mt[id].y = etd->y_max - (((packet[4] & 0x0f) << 8) | packet[5]);
597 pres = (packet[1] & 0xf0) | ((packet[4] & 0xf0) >> 4);
598 traces = (packet[0] & 0xf0) >> 4;
599
600 input_mt_slot(dev, id);
601 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
602
603 input_report_abs(dev, ABS_MT_POSITION_X, etd->mt[id].x);
604 input_report_abs(dev, ABS_MT_POSITION_Y, etd->mt[id].y);
605 input_report_abs(dev, ABS_MT_PRESSURE, pres);
606 input_report_abs(dev, ABS_MT_TOUCH_MAJOR, traces * etd->width);
607 /* report this for backwards compatibility */
608 input_report_abs(dev, ABS_TOOL_WIDTH, traces);
609
610 elantech_input_sync_v4(psmouse);
611}
612
613static void process_packet_motion_v4(struct psmouse *psmouse)
614{
615 struct input_dev *dev = psmouse->dev;
616 struct elantech_data *etd = psmouse->private;
617 unsigned char *packet = psmouse->packet;
618 int weight, delta_x1 = 0, delta_y1 = 0, delta_x2 = 0, delta_y2 = 0;
619 int id, sid;
620
621 id = ((packet[0] & 0xe0) >> 5) - 1;
622 if (id < 0)
623 return;
624
625 sid = ((packet[3] & 0xe0) >> 5) - 1;
626 weight = (packet[0] & 0x10) ? ETP_WEIGHT_VALUE : 1;
627 /*
628 * Motion packets give us the delta of x, y values of specific fingers,
629 * but in two's complement. Let the compiler do the conversion for us.
630 * Also _enlarge_ the numbers to int, in case of overflow.
631 */
632 delta_x1 = (signed char)packet[1];
633 delta_y1 = (signed char)packet[2];
634 delta_x2 = (signed char)packet[4];
635 delta_y2 = (signed char)packet[5];
636
637 etd->mt[id].x += delta_x1 * weight;
638 etd->mt[id].y -= delta_y1 * weight;
639 input_mt_slot(dev, id);
640 input_report_abs(dev, ABS_MT_POSITION_X, etd->mt[id].x);
641 input_report_abs(dev, ABS_MT_POSITION_Y, etd->mt[id].y);
642
643 if (sid >= 0) {
644 etd->mt[sid].x += delta_x2 * weight;
645 etd->mt[sid].y -= delta_y2 * weight;
646 input_mt_slot(dev, sid);
647 input_report_abs(dev, ABS_MT_POSITION_X, etd->mt[sid].x);
648 input_report_abs(dev, ABS_MT_POSITION_Y, etd->mt[sid].y);
649 }
650
651 elantech_input_sync_v4(psmouse);
652}
653
654static void elantech_report_absolute_v4(struct psmouse *psmouse,
655 int packet_type)
656{
657 switch (packet_type) {
658 case PACKET_V4_STATUS:
659 process_packet_status_v4(psmouse);
660 break;
661
662 case PACKET_V4_HEAD:
663 process_packet_head_v4(psmouse);
664 break;
665
666 case PACKET_V4_MOTION:
667 process_packet_motion_v4(psmouse);
668 break;
669
670 case PACKET_UNKNOWN:
671 default:
672 /* impossible to get here */
673 break;
674 }
675}
676
7894f21b 677static int elantech_packet_check_v1(struct psmouse *psmouse)
2a0bd75e
AO		 678{
679 struct elantech_data *etd = psmouse->private;
680 unsigned char *packet = psmouse->packet;
681 unsigned char p1, p2, p3;
682
683 /* Parity bits are placed differently */
504e8bee 684 if (etd->fw_version < 0x020000) {
2a0bd75e
AO		 685 /* byte 0: D U p1 p2 1 p3 R L */
686 p1 = (packet[0] & 0x20) >> 5;
687 p2 = (packet[0] & 0x10) >> 4;
688 } else {
689 /* byte 0: n1 n0 p2 p1 1 p3 R L */
690 p1 = (packet[0] & 0x10) >> 4;
691 p2 = (packet[0] & 0x20) >> 5;
692 }
693
694 p3 = (packet[0] & 0x04) >> 2;
695
696 return etd->parity[packet[1]] == p1 &&
697 etd->parity[packet[2]] == p2 &&
698 etd->parity[packet[3]] == p3;
699}
700
84a90b61
JD		 701static int elantech_debounce_check_v2(struct psmouse *psmouse)
702{
703 /*
704 * When we encounter packet that matches this exactly, it means the
705 * hardware is in debounce status. Just ignore the whole packet.
706 */
707 const u8 debounce_packet[] = { 0x84, 0xff, 0xff, 0x02, 0xff, 0xff };
708 unsigned char *packet = psmouse->packet;
709
710 return !memcmp(packet, debounce_packet, sizeof(debounce_packet));
711}
712
7894f21b
JD		 713static int elantech_packet_check_v2(struct psmouse *psmouse)
714{
715 struct elantech_data *etd = psmouse->private;
716 unsigned char *packet = psmouse->packet;
717
718 /*
719 * V2 hardware has two flavors. Older ones that do not report pressure,
720 * and newer ones that reports pressure and width. With newer ones, all
721 * packets (1, 2, 3 finger touch) have the same constant bits. With
722 * older ones, 1/3 finger touch packets and 2 finger touch packets
723 * have different constant bits.
724 * With all three cases, if the constant bits are not exactly what I
725 * expected, I consider them invalid.
726 */
727 if (etd->reports_pressure)
728 return (packet[0] & 0x0c) == 0x04 &&
729 (packet[3] & 0x0f) == 0x02;
730
731 if ((packet[0] & 0xc0) == 0x80)
732 return (packet[0] & 0x0c) == 0x0c &&
733 (packet[3] & 0x0e) == 0x08;
734
735 return (packet[0] & 0x3c) == 0x3c &&
736 (packet[1] & 0xf0) == 0x00 &&
737 (packet[3] & 0x3e) == 0x38 &&
738 (packet[4] & 0xf0) == 0x00;
739}
740
28f49616
JD		 741/*
742 * We check the constant bits to determine what packet type we get,
1dc6edec 743 * so packet checking is mandatory for v3 and later hardware.
28f49616
JD		 744 */
745static int elantech_packet_check_v3(struct psmouse *psmouse)
746{
acc0444b 747 struct elantech_data *etd = psmouse->private;
28f49616
JD		 748 const u8 debounce_packet[] = { 0xc4, 0xff, 0xff, 0x02, 0xff, 0xff };
749 unsigned char *packet = psmouse->packet;
750
751 /*
752 * check debounce first, it has the same signature in byte 0
753 * and byte 3 as PACKET_V3_HEAD.
754 */
755 if (!memcmp(packet, debounce_packet, sizeof(debounce_packet)))
756 return PACKET_DEBOUNCE;
757
acc0444b
MD		 758 /*
759 * If the hardware flag 'crc_enabled' is set the packets have
760 * different signatures.
761 */
762 if (etd->crc_enabled) {
763 if ((packet[3] & 0x09) == 0x08)
764 return PACKET_V3_HEAD;
765
766 if ((packet[3] & 0x09) == 0x09)
767 return PACKET_V3_TAIL;
768 } else {
769 if ((packet[0] & 0x0c) == 0x04 && (packet[3] & 0xcf) == 0x02)
770 return PACKET_V3_HEAD;
28f49616 771
acc0444b
MD		 772 if ((packet[0] & 0x0c) == 0x0c && (packet[3] & 0xce) == 0x0c)
773 return PACKET_V3_TAIL;
a2418fc4
UDB		 774 if ((packet[3] & 0x0f) == 0x06)
775 return PACKET_TRACKPOINT;
acc0444b 776 }
28f49616
JD		 777
778 return PACKET_UNKNOWN;
779}
780
1dc6edec
JD		 781static int elantech_packet_check_v4(struct psmouse *psmouse)
782{
acc0444b 783 struct elantech_data *etd = psmouse->private;
1dc6edec 784 unsigned char *packet = psmouse->packet;
9eebed7d 785 unsigned char packet_type = packet[3] & 0x03;
acc0444b
MD		 786 bool sanity_check;
787
d0ab5478 788 if (etd->tp_dev && (packet[3] & 0x0f) == 0x06)
caeb0d37
UDB		 789 return PACKET_TRACKPOINT;
790
acc0444b
MD		 791 /*
792 * Sanity check based on the constant bits of a packet.
793 * The constant bits change depending on the value of
794 * the hardware flag 'crc_enabled' but are the same for
795 * every packet, regardless of the type.
796 */
797 if (etd->crc_enabled)
798 sanity_check = ((packet[3] & 0x08) == 0x00);
799 else
800 sanity_check = ((packet[0] & 0x0c) == 0x04 &&
801 (packet[3] & 0x1c) == 0x10);
802
803 if (!sanity_check)
804 return PACKET_UNKNOWN;
1dc6edec 805
9eebed7d
MD		 806 switch (packet_type) {
807 case 0:
808 return PACKET_V4_STATUS;
809
810 case 1:
1dc6edec
JD		 811 return PACKET_V4_HEAD;
812
9eebed7d 813 case 2:
1dc6edec 814 return PACKET_V4_MOTION;
9eebed7d 815 }
1dc6edec
JD		 816
817 return PACKET_UNKNOWN;
818}
819
2a0bd75e
AO		 820/*
821 * Process byte stream from mouse and handle complete packets
822 */
823static psmouse_ret_t elantech_process_byte(struct psmouse *psmouse)
824{
825 struct elantech_data *etd = psmouse->private;
28f49616 826 int packet_type;
2a0bd75e
AO		 827
828 if (psmouse->pktcnt < psmouse->pktsize)
829 return PSMOUSE_GOOD_DATA;
830
831 if (etd->debug > 1)
b5d21704 832 elantech_packet_dump(psmouse);
2a0bd75e
AO		 833
834 switch (etd->hw_version) {
835 case 1:
7894f21b 836 if (etd->paritycheck && !elantech_packet_check_v1(psmouse))
2a0bd75e
AO		 837 return PSMOUSE_BAD_DATA;
838
839 elantech_report_absolute_v1(psmouse);
840 break;
841
842 case 2:
84a90b61
JD		 843 /* ignore debounce */
844 if (elantech_debounce_check_v2(psmouse))
845 return PSMOUSE_FULL_PACKET;
846
7894f21b
JD		 847 if (etd->paritycheck && !elantech_packet_check_v2(psmouse))
848 return PSMOUSE_BAD_DATA;
849
2a0bd75e
AO		 850 elantech_report_absolute_v2(psmouse);
851 break;
28f49616
JD		 852
853 case 3:
854 packet_type = elantech_packet_check_v3(psmouse);
a2418fc4
UDB		 855 switch (packet_type) {
856 case PACKET_UNKNOWN:
28f49616
JD		 857 return PSMOUSE_BAD_DATA;
858
a2418fc4
UDB		 859 case PACKET_DEBOUNCE:
860 /* ignore debounce */
861 break;
862
863 case PACKET_TRACKPOINT:
864 elantech_report_trackpoint(psmouse, packet_type);
865 break;
866
867 default:
868 elantech_report_absolute_v3(psmouse, packet_type);
869 break;
870 }
871
28f49616 872 break;
1dc6edec
JD		 873
874 case 4:
875 packet_type = elantech_packet_check_v4(psmouse);
caeb0d37
UDB		 876 switch (packet_type) {
877 case PACKET_UNKNOWN:
1dc6edec
JD		 878 return PSMOUSE_BAD_DATA;
879
caeb0d37
UDB		 880 case PACKET_TRACKPOINT:
881 elantech_report_trackpoint(psmouse, packet_type);
882 break;
883
884 default:
885 elantech_report_absolute_v4(psmouse, packet_type);
886 break;
887 }
888
1dc6edec 889 break;
2a0bd75e
AO		 890 }
891
892 return PSMOUSE_FULL_PACKET;
893}
894
895/*
896 * Put the touchpad into absolute mode
897 */
898static int elantech_set_absolute_mode(struct psmouse *psmouse)
899{
900 struct elantech_data *etd = psmouse->private;
901 unsigned char val;
902 int tries = ETP_READ_BACK_TRIES;
903 int rc = 0;
904
905 switch (etd->hw_version) {
906 case 1:
907 etd->reg_10 = 0x16;
908 etd->reg_11 = 0x8f;
909 if (elantech_write_reg(psmouse, 0x10, etd->reg_10) ||
910 elantech_write_reg(psmouse, 0x11, etd->reg_11)) {
911 rc = -1;
912 }
913 break;
914
915 case 2:
916 /* Windows driver values */
917 etd->reg_10 = 0x54;
918 etd->reg_11 = 0x88; /* 0x8a */
919 etd->reg_21 = 0x60; /* 0x00 */
920 if (elantech_write_reg(psmouse, 0x10, etd->reg_10) ||
921 elantech_write_reg(psmouse, 0x11, etd->reg_11) ||
922 elantech_write_reg(psmouse, 0x21, etd->reg_21)) {
923 rc = -1;
2a0bd75e 924 }
28f49616
JD		 925 break;
926
927 case 3:
36189cc3
HG		 928 if (etd->set_hw_resolution)
929 etd->reg_10 = 0x0b;
930 else
fb4f8f56 931 etd->reg_10 = 0x01;
36189cc3 932
28f49616
JD		 933 if (elantech_write_reg(psmouse, 0x10, etd->reg_10))
934 rc = -1;
935
936 break;
1dc6edec
JD		 937
938 case 4:
939 etd->reg_07 = 0x01;
940 if (elantech_write_reg(psmouse, 0x07, etd->reg_07))
941 rc = -1;
942
943 goto skip_readback_reg_10; /* v4 has no reg 0x10 to read */
b2546df6
AO		 944 }
945
946 if (rc == 0) {
2a0bd75e 947 /*
b2546df6
AO		 948 * Read back reg 0x10. For hardware version 1 we must make
949 * sure the absolute mode bit is set. For hardware version 2
b5d21704 950 * the touchpad is probably initializing and not ready until
b2546df6 951 * we read back the value we just wrote.
2a0bd75e
AO		 952 */
953 do {
954 rc = elantech_read_reg(psmouse, 0x10, &val);
955 if (rc == 0)
956 break;
957 tries--;
d4ae84a8 958 elantech_debug("retrying read (%d).\n", tries);
2a0bd75e
AO		 959 msleep(ETP_READ_BACK_DELAY);
960 } while (tries > 0);
b2546df6
AO		 961
962 if (rc) {
b5d21704
DT		 963 psmouse_err(psmouse,
964 "failed to read back register 0x10.\n");
b2546df6
AO		 965 } else if (etd->hw_version == 1 &&
966 !(val & ETP_R10_ABSOLUTE_MODE)) {
b5d21704
DT		 967 psmouse_err(psmouse,
968 "touchpad refuses to switch to absolute mode.\n");
b2546df6
AO		 969 rc = -1;
970 }
2a0bd75e
AO		 971 }
972
1dc6edec 973 skip_readback_reg_10:
2a0bd75e 974 if (rc)
b5d21704 975 psmouse_err(psmouse, "failed to initialise registers.\n");
2a0bd75e
AO		 976
977 return rc;
978}
979
28f49616
JD		 980static int elantech_set_range(struct psmouse *psmouse,
981 unsigned int *x_min, unsigned int *y_min,
1dc6edec
JD		 982 unsigned int *x_max, unsigned int *y_max,
983 unsigned int *width)
230282a7
JD		 984{
985 struct elantech_data *etd = psmouse->private;
28f49616 986 unsigned char param[3];
1dc6edec 987 unsigned char traces;
230282a7
JD		 988
989 switch (etd->hw_version) {
990 case 1:
991 *x_min = ETP_XMIN_V1;
992 *y_min = ETP_YMIN_V1;
993 *x_max = ETP_XMAX_V1;
994 *y_max = ETP_YMAX_V1;
995 break;
996
997 case 2:
998 if (etd->fw_version == 0x020800 ||
999 etd->fw_version == 0x020b00 ||
1000 etd->fw_version == 0x020030) {
1001 *x_min = ETP_XMIN_V2;
1002 *y_min = ETP_YMIN_V2;
1003 *x_max = ETP_XMAX_V2;
1004 *y_max = ETP_YMAX_V2;
1005 } else {
84a90b61
JD		 1006 int i;
1007 int fixed_dpi;
1008
230282a7
JD		 1009 i = (etd->fw_version > 0x020800 &&
1010 etd->fw_version < 0x020900) ? 1 : 2;
84a90b61 1011
b56b92a9 1012 if (etd->send_cmd(psmouse, ETP_FW_ID_QUERY, param))
84a90b61
JD		 1013 return -1;
1014
1015 fixed_dpi = param[1] & 0x10;
1016
1017 if (((etd->fw_version >> 16) == 0x14) && fixed_dpi) {
b56b92a9 1018 if (etd->send_cmd(psmouse, ETP_SAMPLE_QUERY, param))
84a90b61
JD		 1019 return -1;
1020
1021 *x_max = (etd->capabilities[1] - i) * param[1] / 2;
1022 *y_max = (etd->capabilities[2] - i) * param[2] / 2;
1023 } else if (etd->fw_version == 0x040216) {
1024 *x_max = 819;
1025 *y_max = 405;
1026 } else if (etd->fw_version == 0x040219 || etd->fw_version == 0x040215) {
1027 *x_max = 900;
1028 *y_max = 500;
1029 } else {
1030 *x_max = (etd->capabilities[1] - i) * 64;
1031 *y_max = (etd->capabilities[2] - i) * 64;
1032 }
230282a7
JD		 1033 }
1034 break;
28f49616
JD		 1035
1036 case 3:
b56b92a9 1037 if (etd->send_cmd(psmouse, ETP_FW_ID_QUERY, param))
28f49616
JD		 1038 return -1;
1039
1040 *x_max = (0x0f & param[0]) << 8 | param[1];
1041 *y_max = (0xf0 & param[0]) << 4 | param[2];
1042 break;
1dc6edec
JD		 1043
1044 case 4:
b56b92a9 1045 if (etd->send_cmd(psmouse, ETP_FW_ID_QUERY, param))
1dc6edec
JD		 1046 return -1;
1047
1048 *x_max = (0x0f & param[0]) << 8 | param[1];
1049 *y_max = (0xf0 & param[0]) << 4 | param[2];
1050 traces = etd->capabilities[1];
1051 if ((traces < 2) || (traces > *x_max))
1052 return -1;
1053
1054 *width = *x_max / (traces - 1);
1055 break;
230282a7 1056 }
28f49616
JD		 1057
1058 return 0;
230282a7
JD		 1059}
1060
3d95fd6a
JD		 1061/*
1062 * (value from firmware) * 10 + 790 = dpi
1063 * we also have to convert dpi to dots/mm (*10/254 to avoid floating point)
1064 */
1065static unsigned int elantech_convert_res(unsigned int val)
1066{
1067 return (val * 10 + 790) * 10 / 254;
1068}
1069
1070static int elantech_get_resolution_v4(struct psmouse *psmouse,
1071 unsigned int *x_res,
1072 unsigned int *y_res)
1073{
1074 unsigned char param[3];
1075
1076 if (elantech_send_cmd(psmouse, ETP_RESOLUTION_QUERY, param))
1077 return -1;
1078
1079 *x_res = elantech_convert_res(param[1] & 0x0f);
1080 *y_res = elantech_convert_res((param[1] & 0xf0) >> 4);
1081
1082 return 0;
1083}
1084
c15bdfd5
HG		 1085/*
1086 * Advertise INPUT_PROP_BUTTONPAD for clickpads. The testing of bit 12 in
1087 * fw_version for this is based on the following fw_version & caps table:
1088 *
1089 * Laptop-model: fw_version: caps: buttons:
1090 * Acer S3 0x461f00 10, 13, 0e clickpad
1091 * Acer S7-392 0x581f01 50, 17, 0d clickpad
1092 * Acer V5-131 0x461f02 01, 16, 0c clickpad
1093 * Acer V5-551 0x461f00 ? clickpad
1094 * Asus K53SV 0x450f01 78, 15, 0c 2 hw buttons
1095 * Asus G46VW 0x460f02 00, 18, 0c 2 hw buttons
1096 * Asus G750JX 0x360f00 00, 16, 0c 2 hw buttons
1097 * Asus UX31 0x361f00 20, 15, 0e clickpad
1098 * Asus UX32VD 0x361f02 00, 15, 0e clickpad
1099 * Avatar AVIU-145A2 0x361f00 ? clickpad
47c1ffb2
RK		 1100 * Fujitsu LIFEBOOK E544 0x470f00 d0, 12, 09 2 hw buttons
1101 * Fujitsu LIFEBOOK E554 0x570f01 40, 14, 0c 2 hw buttons
a2418fc4 1102 * Fujitsu H730 0x570f00 c0, 14, 0c 3 hw buttons (**)
c15bdfd5
HG		 1103 * Gigabyte U2442 0x450f01 58, 17, 0c 2 hw buttons
1104 * Lenovo L430 0x350f02 b9, 15, 0c 2 hw buttons (*)
a2418fc4 1105 * Lenovo L530 0x350f02 b9, 15, 0c 2 hw buttons (*)
c15bdfd5
HG		 1106 * Samsung NF210 0x150b00 78, 14, 0a 2 hw buttons
1107 * Samsung NP770Z5E 0x575f01 10, 15, 0f clickpad
1108 * Samsung NP700Z5B 0x361f06 21, 15, 0f clickpad
1109 * Samsung NP900X3E-A02 0x575f03 ? clickpad
1110 * Samsung NP-QX410 0x851b00 19, 14, 0c clickpad
1111 * Samsung RC512 0x450f00 08, 15, 0c 2 hw buttons
1112 * Samsung RF710 0x450f00 ? 2 hw buttons
1113 * System76 Pangolin 0x250f01 ? 2 hw buttons
1114 * (*) + 3 trackpoint buttons
a2418fc4
UDB		 1115 * (**) + 0 trackpoint buttons
1116 * Note: Lenovo L430 and Lenovo L430 have the same fw_version/caps
c15bdfd5
HG		 1117 */
1118static void elantech_set_buttonpad_prop(struct psmouse *psmouse)
1119{
1120 struct input_dev *dev = psmouse->dev;
1121 struct elantech_data *etd = psmouse->private;
1122
1123 if (etd->fw_version & 0x001000) {
1124 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
1125 __clear_bit(BTN_RIGHT, dev->keybit);
1126 }
1127}
1128
f386474e
UDB		 1129/*
1130 * Some hw_version 4 models do have a middle button
1131 */
1132static const struct dmi_system_id elantech_dmi_has_middle_button[] = {
1133#if defined(CONFIG_DMI) && defined(CONFIG_X86)
1134 {
1135 /* Fujitsu H730 has a middle button */
1136 .matches = {
1137 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
1138 DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H730"),
1139 },
1140 },
1141#endif
1142 { }
1143};
1144
2a0bd75e
AO		 1145/*
1146 * Set the appropriate event bits for the input subsystem
1147 */
28f49616 1148static int elantech_set_input_params(struct psmouse *psmouse)
2a0bd75e
AO		 1149{
1150 struct input_dev *dev = psmouse->dev;
1151 struct elantech_data *etd = psmouse->private;
1dc6edec 1152 unsigned int x_min = 0, y_min = 0, x_max = 0, y_max = 0, width = 0;
3d95fd6a 1153 unsigned int x_res = 0, y_res = 0;
230282a7 1154
1dc6edec 1155 if (elantech_set_range(psmouse, &x_min, &y_min, &x_max, &y_max, &width))
28f49616 1156 return -1;
2a0bd75e 1157
e3dde4fb 1158 __set_bit(INPUT_PROP_POINTER, dev->propbit);
2a0bd75e
AO		 1159 __set_bit(EV_KEY, dev->evbit);
1160 __set_bit(EV_ABS, dev->evbit);
c7a1f3cc 1161 __clear_bit(EV_REL, dev->evbit);
2a0bd75e
AO		 1162
1163 __set_bit(BTN_LEFT, dev->keybit);
f386474e
UDB		 1164 if (dmi_check_system(elantech_dmi_has_middle_button))
1165 __set_bit(BTN_MIDDLE, dev->keybit);
2a0bd75e
AO		 1166 __set_bit(BTN_RIGHT, dev->keybit);
1167
1168 __set_bit(BTN_TOUCH, dev->keybit);
1169 __set_bit(BTN_TOOL_FINGER, dev->keybit);
1170 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
1171 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
1172
1173 switch (etd->hw_version) {
1174 case 1:
1175 /* Rocker button */
504e8bee 1176 if (etd->fw_version < 0x020000 &&
230282a7 1177 (etd->capabilities[0] & ETP_CAP_HAS_ROCKER)) {
2a0bd75e
AO		 1178 __set_bit(BTN_FORWARD, dev->keybit);
1179 __set_bit(BTN_BACK, dev->keybit);
1180 }
230282a7
JD		 1181 input_set_abs_params(dev, ABS_X, x_min, x_max, 0, 0);
1182 input_set_abs_params(dev, ABS_Y, y_min, y_max, 0, 0);
2a0bd75e
AO		 1183 break;
1184
1185 case 2:
22462d9f 1186 __set_bit(BTN_TOOL_QUADTAP, dev->keybit);
28f49616
JD		 1187 __set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
1188 /* fall through */
1189 case 3:
c15bdfd5
HG		 1190 if (etd->hw_version == 3)
1191 elantech_set_buttonpad_prop(psmouse);
230282a7
JD		 1192 input_set_abs_params(dev, ABS_X, x_min, x_max, 0, 0);
1193 input_set_abs_params(dev, ABS_Y, y_min, y_max, 0, 0);
f941c705
ÉP		 1194 if (etd->reports_pressure) {
1195 input_set_abs_params(dev, ABS_PRESSURE, ETP_PMIN_V2,
1196 ETP_PMAX_V2, 0, 0);
1197 input_set_abs_params(dev, ABS_TOOL_WIDTH, ETP_WMIN_V2,
1198 ETP_WMAX_V2, 0, 0);
1199 }
b4adbbef 1200 input_mt_init_slots(dev, 2, 0);
230282a7
JD		 1201 input_set_abs_params(dev, ABS_MT_POSITION_X, x_min, x_max, 0, 0);
1202 input_set_abs_params(dev, ABS_MT_POSITION_Y, y_min, y_max, 0, 0);
2a0bd75e 1203 break;
1dc6edec
JD		 1204
1205 case 4:
3d95fd6a
JD		 1206 if (elantech_get_resolution_v4(psmouse, &x_res, &y_res)) {
1207 /*
1208 * if query failed, print a warning and leave the values
1209 * zero to resemble synaptics.c behavior.
1210 */
1211 psmouse_warn(psmouse, "couldn't query resolution data.\n");
1212 }
c15bdfd5 1213 elantech_set_buttonpad_prop(psmouse);
1dc6edec
JD		 1214 __set_bit(BTN_TOOL_QUADTAP, dev->keybit);
1215 /* For X to recognize me as touchpad. */
1216 input_set_abs_params(dev, ABS_X, x_min, x_max, 0, 0);
1217 input_set_abs_params(dev, ABS_Y, y_min, y_max, 0, 0);
3d95fd6a
JD		 1218 input_abs_set_res(dev, ABS_X, x_res);
1219 input_abs_set_res(dev, ABS_Y, y_res);
1dc6edec
JD		 1220 /*
1221 * range of pressure and width is the same as v2,
1222 * report ABS_PRESSURE, ABS_TOOL_WIDTH for compatibility.
1223 */
1224 input_set_abs_params(dev, ABS_PRESSURE, ETP_PMIN_V2,
1225 ETP_PMAX_V2, 0, 0);
1226 input_set_abs_params(dev, ABS_TOOL_WIDTH, ETP_WMIN_V2,
1227 ETP_WMAX_V2, 0, 0);
1228 /* Multitouch capable pad, up to 5 fingers. */
b4adbbef 1229 input_mt_init_slots(dev, ETP_MAX_FINGERS, 0);
1dc6edec
JD		 1230 input_set_abs_params(dev, ABS_MT_POSITION_X, x_min, x_max, 0, 0);
1231 input_set_abs_params(dev, ABS_MT_POSITION_Y, y_min, y_max, 0, 0);
3d95fd6a
JD		 1232 input_abs_set_res(dev, ABS_MT_POSITION_X, x_res);
1233 input_abs_set_res(dev, ABS_MT_POSITION_Y, y_res);
1dc6edec
JD		 1234 input_set_abs_params(dev, ABS_MT_PRESSURE, ETP_PMIN_V2,
1235 ETP_PMAX_V2, 0, 0);
1236 /*
1237 * The firmware reports how many trace lines the finger spans,
1238 * convert to surface unit as Protocol-B requires.
1239 */
1240 input_set_abs_params(dev, ABS_MT_TOUCH_MAJOR, 0,
1241 ETP_WMAX_V2 * width, 0, 0);
1242 break;
2a0bd75e 1243 }
230282a7
JD		 1244
1245 etd->y_max = y_max;
1dc6edec 1246 etd->width = width;
28f49616
JD		 1247
1248 return 0;
2a0bd75e
AO		 1249}
1250
1251struct elantech_attr_data {
1252 size_t field_offset;
1253 unsigned char reg;
1254};
1255
1256/*
1257 * Display a register value by reading a sysfs entry
1258 */
1259static ssize_t elantech_show_int_attr(struct psmouse *psmouse, void *data,
1260 char *buf)
1261{
1262 struct elantech_data *etd = psmouse->private;
1263 struct elantech_attr_data *attr = data;
1264 unsigned char *reg = (unsigned char *) etd + attr->field_offset;
1265 int rc = 0;
1266
1267 if (attr->reg)
1268 rc = elantech_read_reg(psmouse, attr->reg, reg);
1269
1270 return sprintf(buf, "0x%02x\n", (attr->reg && rc) ? -1 : *reg);
1271}
1272
1273/*
1274 * Write a register value by writing a sysfs entry
1275 */
1276static ssize_t elantech_set_int_attr(struct psmouse *psmouse,
1277 void *data, const char *buf, size_t count)
1278{
1279 struct elantech_data *etd = psmouse->private;
1280 struct elantech_attr_data *attr = data;
1281 unsigned char *reg = (unsigned char *) etd + attr->field_offset;
76496e7a 1282 unsigned char value;
2a0bd75e
AO		 1283 int err;
1284
76496e7a 1285 err = kstrtou8(buf, 16, &value);
2a0bd75e
AO		 1286 if (err)
1287 return err;
1288
2a0bd75e
AO		 1289 /* Do we need to preserve some bits for version 2 hardware too? */
1290 if (etd->hw_version == 1) {
1291 if (attr->reg == 0x10)
1292 /* Force absolute mode always on */
1293 value |= ETP_R10_ABSOLUTE_MODE;
1294 else if (attr->reg == 0x11)
1295 /* Force 4 byte mode always on */
1296 value |= ETP_R11_4_BYTE_MODE;
1297 }
1298
1299 if (!attr->reg || elantech_write_reg(psmouse, attr->reg, value) == 0)
1300 *reg = value;
1301
1302 return count;
1303}
1304
1305#define ELANTECH_INT_ATTR(_name, _register) \
1306 static struct elantech_attr_data elantech_attr_##_name = { \
1307 .field_offset = offsetof(struct elantech_data, _name), \
1308 .reg = _register, \
1309 }; \
1310 PSMOUSE_DEFINE_ATTR(_name, S_IWUSR | S_IRUGO, \
1311 &elantech_attr_##_name, \
1312 elantech_show_int_attr, \
1313 elantech_set_int_attr)
1314
1dc6edec 1315ELANTECH_INT_ATTR(reg_07, 0x07);
2a0bd75e
AO		 1316ELANTECH_INT_ATTR(reg_10, 0x10);
1317ELANTECH_INT_ATTR(reg_11, 0x11);
1318ELANTECH_INT_ATTR(reg_20, 0x20);
1319ELANTECH_INT_ATTR(reg_21, 0x21);
1320ELANTECH_INT_ATTR(reg_22, 0x22);
1321ELANTECH_INT_ATTR(reg_23, 0x23);
1322ELANTECH_INT_ATTR(reg_24, 0x24);
1323ELANTECH_INT_ATTR(reg_25, 0x25);
1324ELANTECH_INT_ATTR(reg_26, 0x26);
1325ELANTECH_INT_ATTR(debug, 0);
1326ELANTECH_INT_ATTR(paritycheck, 0);
2d9eb81f 1327ELANTECH_INT_ATTR(crc_enabled, 0);
2a0bd75e
AO		 1328
1329static struct attribute *elantech_attrs[] = {
1dc6edec 1330 &psmouse_attr_reg_07.dattr.attr,
2a0bd75e
AO		 1331 &psmouse_attr_reg_10.dattr.attr,
1332 &psmouse_attr_reg_11.dattr.attr,
1333 &psmouse_attr_reg_20.dattr.attr,
1334 &psmouse_attr_reg_21.dattr.attr,
1335 &psmouse_attr_reg_22.dattr.attr,
1336 &psmouse_attr_reg_23.dattr.attr,
1337 &psmouse_attr_reg_24.dattr.attr,
1338 &psmouse_attr_reg_25.dattr.attr,
1339 &psmouse_attr_reg_26.dattr.attr,
1340 &psmouse_attr_debug.dattr.attr,
1341 &psmouse_attr_paritycheck.dattr.attr,
2d9eb81f 1342 &psmouse_attr_crc_enabled.dattr.attr,
2a0bd75e
AO		 1343 NULL
1344};
1345
1346static struct attribute_group elantech_attr_group = {
1347 .attrs = elantech_attrs,
1348};
1349
a083632e
DT		 1350static bool elantech_is_signature_valid(const unsigned char *param)
1351{
1352 static const unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10 };
1353 int i;
1354
1355 if (param[0] == 0)
1356 return false;
1357
1358 if (param[1] == 0)
1359 return true;
1360
271329b3
HG		 1361 /*
1362 * Some models have a revision higher then 20. Meaning param[2] may
1363 * be 10 or 20, skip the rates check for these.
1364 */
1365 if (param[0] == 0x46 && (param[1] & 0xef) == 0x0f && param[2] < 40)
1366 return true;
1367
a083632e
DT		 1368 for (i = 0; i < ARRAY_SIZE(rates); i++)
1369 if (param[2] == rates[i])
1370 return false;
1371
1372 return true;
1373}
1374
2a0bd75e
AO		 1375/*
1376 * Use magic knock to detect Elantech touchpad
1377 */
b7802c5c 1378int elantech_detect(struct psmouse *psmouse, bool set_properties)
2a0bd75e
AO		 1379{
1380 struct ps2dev *ps2dev = &psmouse->ps2dev;
1381 unsigned char param[3];
1382
1383 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
1384
1385 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1386 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1387 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1388 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1389 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) {
b5d21704 1390 psmouse_dbg(psmouse, "sending Elantech magic knock failed.\n");
2a0bd75e
AO		 1391 return -1;
1392 }
1393
1394 /*
1395 * Report this in case there are Elantech models that use a different
1396 * set of magic numbers
1397 */
28f49616
JD		 1398 if (param[0] != 0x3c || param[1] != 0x03 ||
1399 (param[2] != 0xc8 && param[2] != 0x00)) {
b5d21704
DT		 1400 psmouse_dbg(psmouse,
1401 "unexpected magic knock result 0x%02x, 0x%02x, 0x%02x.\n",
1402 param[0], param[1], param[2]);
9ab7b25e
AO		 1403 return -1;
1404 }
1405
1406 /*
1407 * Query touchpad's firmware version and see if it reports known
1408 * value to avoid mis-detection. Logitech mice are known to respond
1409 * to Elantech magic knock and there might be more.
1410 */
1411 if (synaptics_send_cmd(psmouse, ETP_FW_VERSION_QUERY, param)) {
b5d21704 1412 psmouse_dbg(psmouse, "failed to query firmware version.\n");
9ab7b25e
AO		 1413 return -1;
1414 }
1415
b5d21704
DT		 1416 psmouse_dbg(psmouse,
1417 "Elantech version query result 0x%02x, 0x%02x, 0x%02x.\n",
1418 param[0], param[1], param[2]);
9ab7b25e 1419
a083632e 1420 if (!elantech_is_signature_valid(param)) {
b5d21704
DT		 1421 psmouse_dbg(psmouse,
1422 "Probably not a real Elantech touchpad. Aborting.\n");
4af61e90 1423 return -1;
2a0bd75e
AO		 1424 }
1425
1426 if (set_properties) {
1427 psmouse->vendor = "Elantech";
1428 psmouse->name = "Touchpad";
1429 }
1430
1431 return 0;
1432}
1433
1434/*
1435 * Clean up sysfs entries when disconnecting
1436 */
1437static void elantech_disconnect(struct psmouse *psmouse)
1438{
a2418fc4
UDB		 1439 struct elantech_data *etd = psmouse->private;
1440
1441 if (etd->tp_dev)
1442 input_unregister_device(etd->tp_dev);
2a0bd75e
AO		 1443 sysfs_remove_group(&psmouse->ps2dev.serio->dev.kobj,
1444 &elantech_attr_group);
1445 kfree(psmouse->private);
1446 psmouse->private = NULL;
1447}
1448
1449/*
1450 * Put the touchpad back into absolute mode when reconnecting
1451 */
1452static int elantech_reconnect(struct psmouse *psmouse)
1453{
a67ada7a
JD		 1454 psmouse_reset(psmouse);
1455
2a0bd75e
AO		 1456 if (elantech_detect(psmouse, 0))
1457 return -1;
1458
1459 if (elantech_set_absolute_mode(psmouse)) {
b5d21704
DT		 1460 psmouse_err(psmouse,
1461 "failed to put touchpad back into absolute mode.\n");
2a0bd75e
AO		 1462 return -1;
1463 }
1464
1465 return 0;
1466}
1467
0dc15879
UDB		 1468/*
1469 * Some hw_version 4 models do not work with crc_disabled
1470 */
1471static const struct dmi_system_id elantech_dmi_force_crc_enabled[] = {
1472#if defined(CONFIG_DMI) && defined(CONFIG_X86)
1473 {
1474 /* Fujitsu H730 does not work with crc_enabled == 0 */
1475 .matches = {
1476 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
1477 DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H730"),
1478 },
1479 },
47c1ffb2
RK		 1480 {
1481 /* Fujitsu LIFEBOOK E554 does not work with crc_enabled == 0 */
1482 .matches = {
1483 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
1484 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E554"),
1485 },
1486 },
1487 {
1488 /* Fujitsu LIFEBOOK E544 does not work with crc_enabled == 0 */
1489 .matches = {
1490 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
1491 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E544"),
1492 },
1493 },
0dc15879
UDB		 1494#endif
1495 { }
1496};
1497
36189cc3 1498/*
fb4f8f56
HG		 1499 * Some hw_version 3 models go into error state when we try to set
1500 * bit 3 and/or bit 1 of r10.
36189cc3
HG		 1501 */
1502static const struct dmi_system_id no_hw_res_dmi_table[] = {
1503#if defined(CONFIG_DMI) && defined(CONFIG_X86)
1504 {
1505 /* Gigabyte U2442 */
1506 .matches = {
1507 DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
1508 DMI_MATCH(DMI_PRODUCT_NAME, "U2442"),
1509 },
1510 },
1511#endif
1512 { }
1513};
1514
3c8bbb95
JD		 1515/*
1516 * determine hardware version and set some properties according to it.
1517 */
28f49616 1518static int elantech_set_properties(struct elantech_data *etd)
3c8bbb95 1519{
3940d618 1520 /* This represents the version of IC body. */
1dc6edec
JD		 1521 int ver = (etd->fw_version & 0x0f0000) >> 16;
1522
3940d618 1523 /* Early version of Elan touchpads doesn't obey the rule. */
3c8bbb95
JD		 1524 if (etd->fw_version < 0x020030 || etd->fw_version == 0x020600)
1525 etd->hw_version = 1;
3940d618
JD		 1526 else {
1527 switch (ver) {
1528 case 2:
1529 case 4:
1530 etd->hw_version = 2;
1531 break;
1532 case 5:
1533 etd->hw_version = 3;
1534 break;
1535 case 6:
9eebed7d 1536 case 7:
9cb80b96 1537 case 8:
ae4bedf0 1538 case 9:
810aa091
S		 1539 case 10:
1540 case 13:
3940d618
JD		 1541 etd->hw_version = 4;
1542 break;
1543 default:
1544 return -1;
1545 }
1546 }
3c8bbb95 1547
b56b92a9
JD		 1548 /* decide which send_cmd we're gonna use early */
1549 etd->send_cmd = etd->hw_version >= 3 ? elantech_send_cmd :
1550 synaptics_send_cmd;
1551
1552 /* Turn on packet checking by default */
3c8bbb95
JD		 1553 etd->paritycheck = 1;
1554
1555 /*
1556 * This firmware suffers from misreporting coordinates when
1557 * a touch action starts causing the mouse cursor or scrolled page
1558 * to jump. Enable a workaround.
1559 */
1560 etd->jumpy_cursor =
1561 (etd->fw_version == 0x020022 || etd->fw_version == 0x020600);
1562
28f49616 1563 if (etd->hw_version > 1) {
3c8bbb95
JD		 1564 /* For now show extra debug information */
1565 etd->debug = 1;
1566
1567 if (etd->fw_version >= 0x020800)
1568 etd->reports_pressure = true;
1569 }
28f49616 1570
acc0444b
MD		 1571 /*
1572 * The signatures of v3 and v4 packets change depending on the
1573 * value of this hardware flag.
1574 */
0dc15879
UDB		 1575 etd->crc_enabled = (etd->fw_version & 0x4000) == 0x4000 ||
1576 dmi_check_system(elantech_dmi_force_crc_enabled);
acc0444b 1577
36189cc3
HG		 1578 /* Enable real hardware resolution on hw_version 3 ? */
1579 etd->set_hw_resolution = !dmi_check_system(no_hw_res_dmi_table);
1580
28f49616 1581 return 0;
3c8bbb95
JD		 1582}
1583
2a0bd75e
AO		 1584/*
1585 * Initialize the touchpad and create sysfs entries
1586 */
1587int elantech_init(struct psmouse *psmouse)
1588{
1589 struct elantech_data *etd;
a2418fc4
UDB		 1590 int i;
1591 int error = -EINVAL;
2a0bd75e 1592 unsigned char param[3];
a2418fc4 1593 struct input_dev *tp_dev;
2a0bd75e 1594
9ab7b25e 1595 psmouse->private = etd = kzalloc(sizeof(struct elantech_data), GFP_KERNEL);
2a0bd75e 1596 if (!etd)
6792cbbb 1597 return -ENOMEM;
2a0bd75e 1598
a67ada7a
JD		 1599 psmouse_reset(psmouse);
1600
2a0bd75e
AO		 1601 etd->parity[0] = 1;
1602 for (i = 1; i < 256; i++)
1603 etd->parity[i] = etd->parity[i & (i - 1)] ^ 1;
1604
1605 /*
9ab7b25e 1606 * Do the version query again so we can store the result
2a0bd75e
AO		 1607 */
1608 if (synaptics_send_cmd(psmouse, ETP_FW_VERSION_QUERY, param)) {
b5d21704 1609 psmouse_err(psmouse, "failed to query firmware version.\n");
2a0bd75e
AO		 1610 goto init_fail;
1611 }
504e8bee 1612 etd->fw_version = (param[0] << 16) | (param[1] << 8) | param[2];
28f49616
JD		 1613
1614 if (elantech_set_properties(etd)) {
b5d21704 1615 psmouse_err(psmouse, "unknown hardware version, aborting...\n");
28f49616
JD		 1616 goto init_fail;
1617 }
b5d21704
DT		 1618 psmouse_info(psmouse,
1619 "assuming hardware version %d (with firmware version 0x%02x%02x%02x)\n",
1620 etd->hw_version, param[0], param[1], param[2]);
2a0bd75e 1621
b56b92a9 1622 if (etd->send_cmd(psmouse, ETP_CAPABILITIES_QUERY,
230282a7 1623 etd->capabilities)) {
b5d21704 1624 psmouse_err(psmouse, "failed to query capabilities.\n");
2a0bd75e
AO		 1625 goto init_fail;
1626 }
b5d21704
DT		 1627 psmouse_info(psmouse,
1628 "Synaptics capabilities query result 0x%02x, 0x%02x, 0x%02x.\n",
1629 etd->capabilities[0], etd->capabilities[1],
1630 etd->capabilities[2]);
2a0bd75e
AO		 1631
1632 if (elantech_set_absolute_mode(psmouse)) {
b5d21704
DT		 1633 psmouse_err(psmouse,
1634 "failed to put touchpad into absolute mode.\n");
2a0bd75e
AO		 1635 goto init_fail;
1636 }
1637
28f49616 1638 if (elantech_set_input_params(psmouse)) {
b5d21704 1639 psmouse_err(psmouse, "failed to query touchpad range.\n");
28f49616
JD		 1640 goto init_fail;
1641 }
2a0bd75e
AO		 1642
1643 error = sysfs_create_group(&psmouse->ps2dev.serio->dev.kobj,
1644 &elantech_attr_group);
1645 if (error) {
b5d21704
DT		 1646 psmouse_err(psmouse,
1647 "failed to create sysfs attributes, error: %d.\n",
1648 error);
2a0bd75e
AO		 1649 goto init_fail;
1650 }
1651
a2418fc4
UDB		 1652 /* The MSB indicates the presence of the trackpoint */
1653 if ((etd->capabilities[0] & 0x80) == 0x80) {
1654 tp_dev = input_allocate_device();
1655
1656 if (!tp_dev) {
1657 error = -ENOMEM;
1658 goto init_fail_tp_alloc;
1659 }
1660
1661 etd->tp_dev = tp_dev;
1662 snprintf(etd->tp_phys, sizeof(etd->tp_phys), "%s/input1",
1663 psmouse->ps2dev.serio->phys);
1664 tp_dev->phys = etd->tp_phys;
1665 tp_dev->name = "Elantech PS/2 TrackPoint";
1666 tp_dev->id.bustype = BUS_I8042;
1667 tp_dev->id.vendor = 0x0002;
1668 tp_dev->id.product = PSMOUSE_ELANTECH;
1669 tp_dev->id.version = 0x0000;
1670 tp_dev->dev.parent = &psmouse->ps2dev.serio->dev;
1671 tp_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
1672 tp_dev->relbit[BIT_WORD(REL_X)] =
1673 BIT_MASK(REL_X) | BIT_MASK(REL_Y);
1674 tp_dev->keybit[BIT_WORD(BTN_LEFT)] =
1675 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) |
1676 BIT_MASK(BTN_RIGHT);
7611392f 1677
01d4cd5c 1678 __set_bit(INPUT_PROP_POINTER, tp_dev->propbit);
7611392f
HG		 1679 __set_bit(INPUT_PROP_POINTING_STICK, tp_dev->propbit);
1680
a2418fc4
UDB		 1681 error = input_register_device(etd->tp_dev);
1682 if (error < 0)
1683 goto init_fail_tp_reg;
1684 }
1685
2a0bd75e
AO		 1686 psmouse->protocol_handler = elantech_process_byte;
1687 psmouse->disconnect = elantech_disconnect;
1688 psmouse->reconnect = elantech_reconnect;
28f49616 1689 psmouse->pktsize = etd->hw_version > 1 ? 6 : 4;
2a0bd75e
AO		 1690
1691 return 0;
a2418fc4
UDB		 1692 init_fail_tp_reg:
1693 input_free_device(tp_dev);
1694 init_fail_tp_alloc:
1695 sysfs_remove_group(&psmouse->ps2dev.serio->dev.kobj,
1696 &elantech_attr_group);
2a0bd75e 1697 init_fail:
ac84eba2 1698 psmouse_reset(psmouse);
2a0bd75e 1699 kfree(etd);
a2418fc4 1700 return error;
2a0bd75e 1701}
Linux kernel - Deliverables
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