2 * Elantech Touchpad driver (v6)
4 * Copyright (C) 2007-2009 Arjan Opmeer <arjan@opmeer.net>
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.
10 * Trademarks are the property of their respective owners.
13 #include <linux/delay.h>
14 #include <linux/slab.h>
15 #include <linux/module.h>
16 #include <linux/input.h>
17 #include <linux/serio.h>
18 #include <linux/libps2.h>
22 #define elantech_debug(format, arg...) \
25 printk(KERN_DEBUG format, ##arg); \
29 * Send a Synaptics style sliced query command
31 static int synaptics_send_cmd(struct psmouse
*psmouse
, unsigned char c
,
34 if (psmouse_sliced_command(psmouse
, c
) ||
35 ps2_command(&psmouse
->ps2dev
, param
, PSMOUSE_CMD_GETINFO
)) {
36 pr_err("elantech.c: synaptics_send_cmd query 0x%02x failed.\n", c
);
44 * A retrying version of ps2_command
46 static int elantech_ps2_command(struct psmouse
*psmouse
,
47 unsigned char *param
, int command
)
49 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
50 struct elantech_data
*etd
= psmouse
->private;
52 int tries
= ETP_PS2_COMMAND_TRIES
;
55 rc
= ps2_command(ps2dev
, param
, command
);
59 elantech_debug("elantech.c: retrying ps2 command 0x%02x (%d).\n",
61 msleep(ETP_PS2_COMMAND_DELAY
);
65 pr_err("elantech.c: ps2 command 0x%02x failed.\n", command
);
71 * Send an Elantech style special command to read a value from a register
73 static int elantech_read_reg(struct psmouse
*psmouse
, unsigned char reg
,
76 struct elantech_data
*etd
= psmouse
->private;
77 unsigned char param
[3];
80 if (reg
< 0x10 || reg
> 0x26)
83 if (reg
> 0x11 && reg
< 0x20)
86 switch (etd
->hw_version
) {
88 if (psmouse_sliced_command(psmouse
, ETP_REGISTER_READ
) ||
89 psmouse_sliced_command(psmouse
, reg
) ||
90 ps2_command(&psmouse
->ps2dev
, param
, PSMOUSE_CMD_GETINFO
)) {
96 if (elantech_ps2_command(psmouse
, NULL
, ETP_PS2_CUSTOM_COMMAND
) ||
97 elantech_ps2_command(psmouse
, NULL
, ETP_REGISTER_READ
) ||
98 elantech_ps2_command(psmouse
, NULL
, ETP_PS2_CUSTOM_COMMAND
) ||
99 elantech_ps2_command(psmouse
, NULL
, reg
) ||
100 elantech_ps2_command(psmouse
, param
, PSMOUSE_CMD_GETINFO
)) {
107 pr_err("elantech.c: failed to read register 0x%02x.\n", reg
);
115 * Send an Elantech style special command to write a register with a value
117 static int elantech_write_reg(struct psmouse
*psmouse
, unsigned char reg
,
120 struct elantech_data
*etd
= psmouse
->private;
123 if (reg
< 0x10 || reg
> 0x26)
126 if (reg
> 0x11 && reg
< 0x20)
129 switch (etd
->hw_version
) {
131 if (psmouse_sliced_command(psmouse
, ETP_REGISTER_WRITE
) ||
132 psmouse_sliced_command(psmouse
, reg
) ||
133 psmouse_sliced_command(psmouse
, val
) ||
134 ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
)) {
140 if (elantech_ps2_command(psmouse
, NULL
, ETP_PS2_CUSTOM_COMMAND
) ||
141 elantech_ps2_command(psmouse
, NULL
, ETP_REGISTER_WRITE
) ||
142 elantech_ps2_command(psmouse
, NULL
, ETP_PS2_CUSTOM_COMMAND
) ||
143 elantech_ps2_command(psmouse
, NULL
, reg
) ||
144 elantech_ps2_command(psmouse
, NULL
, ETP_PS2_CUSTOM_COMMAND
) ||
145 elantech_ps2_command(psmouse
, NULL
, val
) ||
146 elantech_ps2_command(psmouse
, NULL
, PSMOUSE_CMD_SETSCALE11
)) {
153 pr_err("elantech.c: failed to write register 0x%02x with value 0x%02x.\n",
160 * Dump a complete mouse movement packet to the syslog
162 static void elantech_packet_dump(unsigned char *packet
, int size
)
166 printk(KERN_DEBUG
"elantech.c: PS/2 packet [");
167 for (i
= 0; i
< size
; i
++)
168 printk("%s0x%02x ", (i
) ? ", " : " ", packet
[i
]);
173 * Interpret complete data packets and report absolute mode input events for
174 * hardware version 1. (4 byte packets)
176 static void elantech_report_absolute_v1(struct psmouse
*psmouse
)
178 struct input_dev
*dev
= psmouse
->dev
;
179 struct elantech_data
*etd
= psmouse
->private;
180 unsigned char *packet
= psmouse
->packet
;
182 static int old_fingers
;
184 if (etd
->fw_version_maj
== 0x01) {
185 /* byte 0: D U p1 p2 1 p3 R L
186 byte 1: f 0 th tw x9 x8 y9 y8 */
187 fingers
= ((packet
[1] & 0x80) >> 7) +
188 ((packet
[1] & 0x30) >> 4);
190 /* byte 0: n1 n0 p2 p1 1 p3 R L
191 byte 1: 0 0 0 0 x9 x8 y9 y8 */
192 fingers
= (packet
[0] & 0xc0) >> 6;
195 if (etd
->jumpy_cursor
) {
196 /* Discard packets that are likely to have bogus coordinates */
197 if (fingers
> old_fingers
) {
198 elantech_debug("elantech.c: discarding packet\n");
199 goto discard_packet_v1
;
203 input_report_key(dev
, BTN_TOUCH
, fingers
!= 0);
205 /* byte 2: x7 x6 x5 x4 x3 x2 x1 x0
206 byte 3: y7 y6 y5 y4 y3 y2 y1 y0 */
208 input_report_abs(dev
, ABS_X
,
209 ((packet
[1] & 0x0c) << 6) | packet
[2]);
210 input_report_abs(dev
, ABS_Y
, ETP_YMAX_V1
-
211 (((packet
[1] & 0x03) << 8) | packet
[3]));
214 input_report_key(dev
, BTN_TOOL_FINGER
, fingers
== 1);
215 input_report_key(dev
, BTN_TOOL_DOUBLETAP
, fingers
== 2);
216 input_report_key(dev
, BTN_TOOL_TRIPLETAP
, fingers
== 3);
217 input_report_key(dev
, BTN_LEFT
, packet
[0] & 0x01);
218 input_report_key(dev
, BTN_RIGHT
, packet
[0] & 0x02);
220 if ((etd
->fw_version_maj
== 0x01) &&
221 (etd
->capabilities
& ETP_CAP_HAS_ROCKER
)) {
223 input_report_key(dev
, BTN_FORWARD
, packet
[0] & 0x40);
225 input_report_key(dev
, BTN_BACK
, packet
[0] & 0x80);
231 old_fingers
= fingers
;
235 * Interpret complete data packets and report absolute mode input events for
236 * hardware version 2. (6 byte packets)
238 static void elantech_report_absolute_v2(struct psmouse
*psmouse
)
240 struct input_dev
*dev
= psmouse
->dev
;
241 unsigned char *packet
= psmouse
->packet
;
242 int fingers
, x1
, y1
, x2
, y2
;
244 /* byte 0: n1 n0 . . . . R L */
245 fingers
= (packet
[0] & 0xc0) >> 6;
246 input_report_key(dev
, BTN_TOUCH
, fingers
!= 0);
250 /* byte 1: x15 x14 x13 x12 x11 x10 x9 x8
251 byte 2: x7 x6 x5 x4 x4 x2 x1 x0 */
252 input_report_abs(dev
, ABS_X
, (packet
[1] << 8) | packet
[2]);
253 /* byte 4: y15 y14 y13 y12 y11 y10 y8 y8
254 byte 5: y7 y6 y5 y4 y3 y2 y1 y0 */
255 input_report_abs(dev
, ABS_Y
, ETP_YMAX_V2
-
256 ((packet
[4] << 8) | packet
[5]));
260 /* The coordinate of each finger is reported separately with
261 a lower resolution for two finger touches */
262 /* byte 0: . . ay8 ax8 . . . .
263 byte 1: ax7 ax6 ax5 ax4 ax3 ax2 ax1 ax0 */
264 x1
= ((packet
[0] & 0x10) << 4) | packet
[1];
265 /* byte 2: ay7 ay6 ay5 ay4 ay3 ay2 ay1 ay0 */
266 y1
= ETP_2FT_YMAX
- (((packet
[0] & 0x20) << 3) | packet
[2]);
267 /* byte 3: . . by8 bx8 . . . .
268 byte 4: bx7 bx6 bx5 bx4 bx3 bx2 bx1 bx0 */
269 x2
= ((packet
[3] & 0x10) << 4) | packet
[4];
270 /* byte 5: by7 by8 by5 by4 by3 by2 by1 by0 */
271 y2
= ETP_2FT_YMAX
- (((packet
[3] & 0x20) << 3) | packet
[5]);
272 /* For compatibility with the X Synaptics driver scale up one
273 coordinate and report as ordinary mouse movent */
274 input_report_abs(dev
, ABS_X
, x1
<< 2);
275 input_report_abs(dev
, ABS_Y
, y1
<< 2);
276 /* For compatibility with the proprietary X Elantech driver
277 report both coordinates as hat coordinates */
278 input_report_abs(dev
, ABS_HAT0X
, x1
);
279 input_report_abs(dev
, ABS_HAT0Y
, y1
);
280 input_report_abs(dev
, ABS_HAT1X
, x2
);
281 input_report_abs(dev
, ABS_HAT1Y
, y2
);
285 input_report_key(dev
, BTN_TOOL_FINGER
, fingers
== 1);
286 input_report_key(dev
, BTN_TOOL_DOUBLETAP
, fingers
== 2);
287 input_report_key(dev
, BTN_TOOL_TRIPLETAP
, fingers
== 3);
288 input_report_key(dev
, BTN_LEFT
, packet
[0] & 0x01);
289 input_report_key(dev
, BTN_RIGHT
, packet
[0] & 0x02);
294 static int elantech_check_parity_v1(struct psmouse
*psmouse
)
296 struct elantech_data
*etd
= psmouse
->private;
297 unsigned char *packet
= psmouse
->packet
;
298 unsigned char p1
, p2
, p3
;
300 /* Parity bits are placed differently */
301 if (etd
->fw_version_maj
== 0x01) {
302 /* byte 0: D U p1 p2 1 p3 R L */
303 p1
= (packet
[0] & 0x20) >> 5;
304 p2
= (packet
[0] & 0x10) >> 4;
306 /* byte 0: n1 n0 p2 p1 1 p3 R L */
307 p1
= (packet
[0] & 0x10) >> 4;
308 p2
= (packet
[0] & 0x20) >> 5;
311 p3
= (packet
[0] & 0x04) >> 2;
313 return etd
->parity
[packet
[1]] == p1
&&
314 etd
->parity
[packet
[2]] == p2
&&
315 etd
->parity
[packet
[3]] == p3
;
319 * Process byte stream from mouse and handle complete packets
321 static psmouse_ret_t
elantech_process_byte(struct psmouse
*psmouse
)
323 struct elantech_data
*etd
= psmouse
->private;
325 if (psmouse
->pktcnt
< psmouse
->pktsize
)
326 return PSMOUSE_GOOD_DATA
;
329 elantech_packet_dump(psmouse
->packet
, psmouse
->pktsize
);
331 switch (etd
->hw_version
) {
333 if (etd
->paritycheck
&& !elantech_check_parity_v1(psmouse
))
334 return PSMOUSE_BAD_DATA
;
336 elantech_report_absolute_v1(psmouse
);
340 /* We don't know how to check parity in protocol v2 */
341 elantech_report_absolute_v2(psmouse
);
345 return PSMOUSE_FULL_PACKET
;
349 * Put the touchpad into absolute mode
351 static int elantech_set_absolute_mode(struct psmouse
*psmouse
)
353 struct elantech_data
*etd
= psmouse
->private;
355 int tries
= ETP_READ_BACK_TRIES
;
358 switch (etd
->hw_version
) {
362 if (elantech_write_reg(psmouse
, 0x10, etd
->reg_10
) ||
363 elantech_write_reg(psmouse
, 0x11, etd
->reg_11
)) {
369 /* Windows driver values */
371 etd
->reg_11
= 0x88; /* 0x8a */
372 etd
->reg_21
= 0x60; /* 0x00 */
373 if (elantech_write_reg(psmouse
, 0x10, etd
->reg_10
) ||
374 elantech_write_reg(psmouse
, 0x11, etd
->reg_11
) ||
375 elantech_write_reg(psmouse
, 0x21, etd
->reg_21
)) {
383 * Read back reg 0x10. For hardware version 1 we must make
384 * sure the absolute mode bit is set. For hardware version 2
385 * the touchpad is probably initalising and not ready until
386 * we read back the value we just wrote.
389 rc
= elantech_read_reg(psmouse
, 0x10, &val
);
393 elantech_debug("elantech.c: retrying read (%d).\n",
395 msleep(ETP_READ_BACK_DELAY
);
399 pr_err("elantech.c: failed to read back register 0x10.\n");
400 } else if (etd
->hw_version
== 1 &&
401 !(val
& ETP_R10_ABSOLUTE_MODE
)) {
402 pr_err("elantech.c: touchpad refuses "
403 "to switch to absolute mode.\n");
409 pr_err("elantech.c: failed to initialise registers.\n");
415 * Set the appropriate event bits for the input subsystem
417 static void elantech_set_input_params(struct psmouse
*psmouse
)
419 struct input_dev
*dev
= psmouse
->dev
;
420 struct elantech_data
*etd
= psmouse
->private;
422 __set_bit(EV_KEY
, dev
->evbit
);
423 __set_bit(EV_ABS
, dev
->evbit
);
424 __clear_bit(EV_REL
, dev
->evbit
);
426 __set_bit(BTN_LEFT
, dev
->keybit
);
427 __set_bit(BTN_RIGHT
, dev
->keybit
);
429 __set_bit(BTN_TOUCH
, dev
->keybit
);
430 __set_bit(BTN_TOOL_FINGER
, dev
->keybit
);
431 __set_bit(BTN_TOOL_DOUBLETAP
, dev
->keybit
);
432 __set_bit(BTN_TOOL_TRIPLETAP
, dev
->keybit
);
434 switch (etd
->hw_version
) {
437 if ((etd
->fw_version_maj
== 0x01) &&
438 (etd
->capabilities
& ETP_CAP_HAS_ROCKER
)) {
439 __set_bit(BTN_FORWARD
, dev
->keybit
);
440 __set_bit(BTN_BACK
, dev
->keybit
);
442 input_set_abs_params(dev
, ABS_X
, ETP_XMIN_V1
, ETP_XMAX_V1
, 0, 0);
443 input_set_abs_params(dev
, ABS_Y
, ETP_YMIN_V1
, ETP_YMAX_V1
, 0, 0);
447 input_set_abs_params(dev
, ABS_X
, ETP_XMIN_V2
, ETP_XMAX_V2
, 0, 0);
448 input_set_abs_params(dev
, ABS_Y
, ETP_YMIN_V2
, ETP_YMAX_V2
, 0, 0);
449 input_set_abs_params(dev
, ABS_HAT0X
, ETP_2FT_XMIN
, ETP_2FT_XMAX
, 0, 0);
450 input_set_abs_params(dev
, ABS_HAT0Y
, ETP_2FT_YMIN
, ETP_2FT_YMAX
, 0, 0);
451 input_set_abs_params(dev
, ABS_HAT1X
, ETP_2FT_XMIN
, ETP_2FT_XMAX
, 0, 0);
452 input_set_abs_params(dev
, ABS_HAT1Y
, ETP_2FT_YMIN
, ETP_2FT_YMAX
, 0, 0);
457 struct elantech_attr_data
{
463 * Display a register value by reading a sysfs entry
465 static ssize_t
elantech_show_int_attr(struct psmouse
*psmouse
, void *data
,
468 struct elantech_data
*etd
= psmouse
->private;
469 struct elantech_attr_data
*attr
= data
;
470 unsigned char *reg
= (unsigned char *) etd
+ attr
->field_offset
;
474 rc
= elantech_read_reg(psmouse
, attr
->reg
, reg
);
476 return sprintf(buf
, "0x%02x\n", (attr
->reg
&& rc
) ? -1 : *reg
);
480 * Write a register value by writing a sysfs entry
482 static ssize_t
elantech_set_int_attr(struct psmouse
*psmouse
,
483 void *data
, const char *buf
, size_t count
)
485 struct elantech_data
*etd
= psmouse
->private;
486 struct elantech_attr_data
*attr
= data
;
487 unsigned char *reg
= (unsigned char *) etd
+ attr
->field_offset
;
491 err
= strict_strtoul(buf
, 16, &value
);
498 /* Do we need to preserve some bits for version 2 hardware too? */
499 if (etd
->hw_version
== 1) {
500 if (attr
->reg
== 0x10)
501 /* Force absolute mode always on */
502 value
|= ETP_R10_ABSOLUTE_MODE
;
503 else if (attr
->reg
== 0x11)
504 /* Force 4 byte mode always on */
505 value
|= ETP_R11_4_BYTE_MODE
;
508 if (!attr
->reg
|| elantech_write_reg(psmouse
, attr
->reg
, value
) == 0)
514 #define ELANTECH_INT_ATTR(_name, _register) \
515 static struct elantech_attr_data elantech_attr_##_name = { \
516 .field_offset = offsetof(struct elantech_data, _name), \
519 PSMOUSE_DEFINE_ATTR(_name, S_IWUSR | S_IRUGO, \
520 &elantech_attr_##_name, \
521 elantech_show_int_attr, \
522 elantech_set_int_attr)
524 ELANTECH_INT_ATTR(reg_10
, 0x10);
525 ELANTECH_INT_ATTR(reg_11
, 0x11);
526 ELANTECH_INT_ATTR(reg_20
, 0x20);
527 ELANTECH_INT_ATTR(reg_21
, 0x21);
528 ELANTECH_INT_ATTR(reg_22
, 0x22);
529 ELANTECH_INT_ATTR(reg_23
, 0x23);
530 ELANTECH_INT_ATTR(reg_24
, 0x24);
531 ELANTECH_INT_ATTR(reg_25
, 0x25);
532 ELANTECH_INT_ATTR(reg_26
, 0x26);
533 ELANTECH_INT_ATTR(debug
, 0);
534 ELANTECH_INT_ATTR(paritycheck
, 0);
536 static struct attribute
*elantech_attrs
[] = {
537 &psmouse_attr_reg_10
.dattr
.attr
,
538 &psmouse_attr_reg_11
.dattr
.attr
,
539 &psmouse_attr_reg_20
.dattr
.attr
,
540 &psmouse_attr_reg_21
.dattr
.attr
,
541 &psmouse_attr_reg_22
.dattr
.attr
,
542 &psmouse_attr_reg_23
.dattr
.attr
,
543 &psmouse_attr_reg_24
.dattr
.attr
,
544 &psmouse_attr_reg_25
.dattr
.attr
,
545 &psmouse_attr_reg_26
.dattr
.attr
,
546 &psmouse_attr_debug
.dattr
.attr
,
547 &psmouse_attr_paritycheck
.dattr
.attr
,
551 static struct attribute_group elantech_attr_group
= {
552 .attrs
= elantech_attrs
,
556 * Use magic knock to detect Elantech touchpad
558 int elantech_detect(struct psmouse
*psmouse
, bool set_properties
)
560 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
561 unsigned char param
[3];
563 ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_RESET_DIS
);
565 if (ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_DISABLE
) ||
566 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
) ||
567 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
) ||
568 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
) ||
569 ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETINFO
)) {
570 pr_debug("elantech.c: sending Elantech magic knock failed.\n");
575 * Report this in case there are Elantech models that use a different
576 * set of magic numbers
578 if (param
[0] != 0x3c || param
[1] != 0x03 || param
[2] != 0xc8) {
579 pr_debug("elantech.c: "
580 "unexpected magic knock result 0x%02x, 0x%02x, 0x%02x.\n",
581 param
[0], param
[1], param
[2]);
586 * Query touchpad's firmware version and see if it reports known
587 * value to avoid mis-detection. Logitech mice are known to respond
588 * to Elantech magic knock and there might be more.
590 if (synaptics_send_cmd(psmouse
, ETP_FW_VERSION_QUERY
, param
)) {
591 pr_debug("elantech.c: failed to query firmware version.\n");
595 pr_debug("elantech.c: Elantech version query result 0x%02x, 0x%02x, 0x%02x.\n",
596 param
[0], param
[1], param
[2]);
598 if (param
[0] == 0 || param
[1] != 0) {
599 pr_debug("elantech.c: Probably not a real Elantech touchpad. Aborting.\n");
603 if (set_properties
) {
604 psmouse
->vendor
= "Elantech";
605 psmouse
->name
= "Touchpad";
612 * Clean up sysfs entries when disconnecting
614 static void elantech_disconnect(struct psmouse
*psmouse
)
616 sysfs_remove_group(&psmouse
->ps2dev
.serio
->dev
.kobj
,
617 &elantech_attr_group
);
618 kfree(psmouse
->private);
619 psmouse
->private = NULL
;
623 * Put the touchpad back into absolute mode when reconnecting
625 static int elantech_reconnect(struct psmouse
*psmouse
)
627 if (elantech_detect(psmouse
, 0))
630 if (elantech_set_absolute_mode(psmouse
)) {
631 pr_err("elantech.c: failed to put touchpad back into absolute mode.\n");
639 * Initialize the touchpad and create sysfs entries
641 int elantech_init(struct psmouse
*psmouse
)
643 struct elantech_data
*etd
;
645 unsigned char param
[3];
647 psmouse
->private = etd
= kzalloc(sizeof(struct elantech_data
), GFP_KERNEL
);
652 for (i
= 1; i
< 256; i
++)
653 etd
->parity
[i
] = etd
->parity
[i
& (i
- 1)] ^ 1;
656 * Do the version query again so we can store the result
658 if (synaptics_send_cmd(psmouse
, ETP_FW_VERSION_QUERY
, param
)) {
659 pr_err("elantech.c: failed to query firmware version.\n");
662 etd
->fw_version_maj
= param
[0];
663 etd
->fw_version_min
= param
[2];
666 * Assume every version greater than this is new EeePC style
667 * hardware with 6 byte packets
669 if (etd
->fw_version_maj
>= 0x02 && etd
->fw_version_min
>= 0x30) {
671 /* For now show extra debug information */
673 /* Don't know how to do parity checking for version 2 */
674 etd
->paritycheck
= 0;
677 etd
->paritycheck
= 1;
679 pr_info("elantech.c: assuming hardware version %d, firmware version %d.%d\n",
680 etd
->hw_version
, etd
->fw_version_maj
, etd
->fw_version_min
);
682 if (synaptics_send_cmd(psmouse
, ETP_CAPABILITIES_QUERY
, param
)) {
683 pr_err("elantech.c: failed to query capabilities.\n");
686 pr_info("elantech.c: Synaptics capabilities query result 0x%02x, 0x%02x, 0x%02x.\n",
687 param
[0], param
[1], param
[2]);
688 etd
->capabilities
= param
[0];
691 * This firmware seems to suffer from misreporting coordinates when
692 * a touch action starts causing the mouse cursor or scrolled page
693 * to jump. Enable a workaround.
695 if (etd
->fw_version_maj
== 0x02 && etd
->fw_version_min
== 0x22) {
696 pr_info("elantech.c: firmware version 2.34 detected, "
697 "enabling jumpy cursor workaround\n");
698 etd
->jumpy_cursor
= 1;
701 if (elantech_set_absolute_mode(psmouse
)) {
702 pr_err("elantech.c: failed to put touchpad into absolute mode.\n");
706 elantech_set_input_params(psmouse
);
708 error
= sysfs_create_group(&psmouse
->ps2dev
.serio
->dev
.kobj
,
709 &elantech_attr_group
);
711 pr_err("elantech.c: failed to create sysfs attributes, error: %d.\n",
716 psmouse
->protocol_handler
= elantech_process_byte
;
717 psmouse
->disconnect
= elantech_disconnect
;
718 psmouse
->reconnect
= elantech_reconnect
;
719 psmouse
->pktsize
= etd
->hw_version
== 2 ? 6 : 4;