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