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> | |
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 | */ | |
35 | static 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 | */ | |
50 | static 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 | */ | |
68 | static 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 | */ | |
95 | static 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 | */ | |
151 | static 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 | 223 | static 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 | */ | |
237 | static 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 |
300 | static 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 */ | |
312 | static 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 | */ | |
325 | static 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 |
407 | static 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 | */ | |
465 | static 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 |
546 | static 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 | ||
565 | static 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 | ||
584 | static 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 | ||
613 | static 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 | ||
654 | static 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 | 677 | static 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 |
701 | static 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 |
713 | static 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 | */ |
745 | static 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 |
781 | static 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 | */ | |
823 | static 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 | ||
bd884149 UDB |
895 | /* |
896 | * This writes the reg_07 value again to the hardware at the end of every | |
897 | * set_rate call because the register loses its value. reg_07 allows setting | |
898 | * absolute mode on v4 hardware | |
899 | */ | |
900 | static void elantech_set_rate_restore_reg_07(struct psmouse *psmouse, | |
901 | unsigned int rate) | |
902 | { | |
903 | struct elantech_data *etd = psmouse->private; | |
904 | ||
905 | etd->original_set_rate(psmouse, rate); | |
906 | if (elantech_write_reg(psmouse, 0x07, etd->reg_07)) | |
907 | psmouse_err(psmouse, "restoring reg_07 failed\n"); | |
908 | } | |
909 | ||
2a0bd75e AO |
910 | /* |
911 | * Put the touchpad into absolute mode | |
912 | */ | |
913 | static int elantech_set_absolute_mode(struct psmouse *psmouse) | |
914 | { | |
915 | struct elantech_data *etd = psmouse->private; | |
916 | unsigned char val; | |
917 | int tries = ETP_READ_BACK_TRIES; | |
918 | int rc = 0; | |
919 | ||
920 | switch (etd->hw_version) { | |
921 | case 1: | |
922 | etd->reg_10 = 0x16; | |
923 | etd->reg_11 = 0x8f; | |
924 | if (elantech_write_reg(psmouse, 0x10, etd->reg_10) || | |
925 | elantech_write_reg(psmouse, 0x11, etd->reg_11)) { | |
926 | rc = -1; | |
927 | } | |
928 | break; | |
929 | ||
930 | case 2: | |
931 | /* Windows driver values */ | |
932 | etd->reg_10 = 0x54; | |
933 | etd->reg_11 = 0x88; /* 0x8a */ | |
934 | etd->reg_21 = 0x60; /* 0x00 */ | |
935 | if (elantech_write_reg(psmouse, 0x10, etd->reg_10) || | |
936 | elantech_write_reg(psmouse, 0x11, etd->reg_11) || | |
937 | elantech_write_reg(psmouse, 0x21, etd->reg_21)) { | |
938 | rc = -1; | |
2a0bd75e | 939 | } |
28f49616 JD |
940 | break; |
941 | ||
942 | case 3: | |
36189cc3 HG |
943 | if (etd->set_hw_resolution) |
944 | etd->reg_10 = 0x0b; | |
945 | else | |
fb4f8f56 | 946 | etd->reg_10 = 0x01; |
36189cc3 | 947 | |
28f49616 JD |
948 | if (elantech_write_reg(psmouse, 0x10, etd->reg_10)) |
949 | rc = -1; | |
950 | ||
951 | break; | |
1dc6edec JD |
952 | |
953 | case 4: | |
954 | etd->reg_07 = 0x01; | |
955 | if (elantech_write_reg(psmouse, 0x07, etd->reg_07)) | |
956 | rc = -1; | |
957 | ||
958 | goto skip_readback_reg_10; /* v4 has no reg 0x10 to read */ | |
b2546df6 AO |
959 | } |
960 | ||
961 | if (rc == 0) { | |
2a0bd75e | 962 | /* |
b2546df6 AO |
963 | * Read back reg 0x10. For hardware version 1 we must make |
964 | * sure the absolute mode bit is set. For hardware version 2 | |
b5d21704 | 965 | * the touchpad is probably initializing and not ready until |
b2546df6 | 966 | * we read back the value we just wrote. |
2a0bd75e AO |
967 | */ |
968 | do { | |
969 | rc = elantech_read_reg(psmouse, 0x10, &val); | |
970 | if (rc == 0) | |
971 | break; | |
972 | tries--; | |
d4ae84a8 | 973 | elantech_debug("retrying read (%d).\n", tries); |
2a0bd75e AO |
974 | msleep(ETP_READ_BACK_DELAY); |
975 | } while (tries > 0); | |
b2546df6 AO |
976 | |
977 | if (rc) { | |
b5d21704 DT |
978 | psmouse_err(psmouse, |
979 | "failed to read back register 0x10.\n"); | |
b2546df6 AO |
980 | } else if (etd->hw_version == 1 && |
981 | !(val & ETP_R10_ABSOLUTE_MODE)) { | |
b5d21704 DT |
982 | psmouse_err(psmouse, |
983 | "touchpad refuses to switch to absolute mode.\n"); | |
b2546df6 AO |
984 | rc = -1; |
985 | } | |
2a0bd75e AO |
986 | } |
987 | ||
1dc6edec | 988 | skip_readback_reg_10: |
2a0bd75e | 989 | if (rc) |
b5d21704 | 990 | psmouse_err(psmouse, "failed to initialise registers.\n"); |
2a0bd75e AO |
991 | |
992 | return rc; | |
993 | } | |
994 | ||
28f49616 JD |
995 | static int elantech_set_range(struct psmouse *psmouse, |
996 | unsigned int *x_min, unsigned int *y_min, | |
1dc6edec JD |
997 | unsigned int *x_max, unsigned int *y_max, |
998 | unsigned int *width) | |
230282a7 JD |
999 | { |
1000 | struct elantech_data *etd = psmouse->private; | |
28f49616 | 1001 | unsigned char param[3]; |
1dc6edec | 1002 | unsigned char traces; |
230282a7 JD |
1003 | |
1004 | switch (etd->hw_version) { | |
1005 | case 1: | |
1006 | *x_min = ETP_XMIN_V1; | |
1007 | *y_min = ETP_YMIN_V1; | |
1008 | *x_max = ETP_XMAX_V1; | |
1009 | *y_max = ETP_YMAX_V1; | |
1010 | break; | |
1011 | ||
1012 | case 2: | |
1013 | if (etd->fw_version == 0x020800 || | |
1014 | etd->fw_version == 0x020b00 || | |
1015 | etd->fw_version == 0x020030) { | |
1016 | *x_min = ETP_XMIN_V2; | |
1017 | *y_min = ETP_YMIN_V2; | |
1018 | *x_max = ETP_XMAX_V2; | |
1019 | *y_max = ETP_YMAX_V2; | |
1020 | } else { | |
84a90b61 JD |
1021 | int i; |
1022 | int fixed_dpi; | |
1023 | ||
230282a7 JD |
1024 | i = (etd->fw_version > 0x020800 && |
1025 | etd->fw_version < 0x020900) ? 1 : 2; | |
84a90b61 | 1026 | |
b56b92a9 | 1027 | if (etd->send_cmd(psmouse, ETP_FW_ID_QUERY, param)) |
84a90b61 JD |
1028 | return -1; |
1029 | ||
1030 | fixed_dpi = param[1] & 0x10; | |
1031 | ||
1032 | if (((etd->fw_version >> 16) == 0x14) && fixed_dpi) { | |
b56b92a9 | 1033 | if (etd->send_cmd(psmouse, ETP_SAMPLE_QUERY, param)) |
84a90b61 JD |
1034 | return -1; |
1035 | ||
1036 | *x_max = (etd->capabilities[1] - i) * param[1] / 2; | |
1037 | *y_max = (etd->capabilities[2] - i) * param[2] / 2; | |
1038 | } else if (etd->fw_version == 0x040216) { | |
1039 | *x_max = 819; | |
1040 | *y_max = 405; | |
1041 | } else if (etd->fw_version == 0x040219 || etd->fw_version == 0x040215) { | |
1042 | *x_max = 900; | |
1043 | *y_max = 500; | |
1044 | } else { | |
1045 | *x_max = (etd->capabilities[1] - i) * 64; | |
1046 | *y_max = (etd->capabilities[2] - i) * 64; | |
1047 | } | |
230282a7 JD |
1048 | } |
1049 | break; | |
28f49616 JD |
1050 | |
1051 | case 3: | |
b56b92a9 | 1052 | if (etd->send_cmd(psmouse, ETP_FW_ID_QUERY, param)) |
28f49616 JD |
1053 | return -1; |
1054 | ||
1055 | *x_max = (0x0f & param[0]) << 8 | param[1]; | |
1056 | *y_max = (0xf0 & param[0]) << 4 | param[2]; | |
1057 | break; | |
1dc6edec JD |
1058 | |
1059 | case 4: | |
b56b92a9 | 1060 | if (etd->send_cmd(psmouse, ETP_FW_ID_QUERY, param)) |
1dc6edec JD |
1061 | return -1; |
1062 | ||
1063 | *x_max = (0x0f & param[0]) << 8 | param[1]; | |
1064 | *y_max = (0xf0 & param[0]) << 4 | param[2]; | |
1065 | traces = etd->capabilities[1]; | |
1066 | if ((traces < 2) || (traces > *x_max)) | |
1067 | return -1; | |
1068 | ||
1069 | *width = *x_max / (traces - 1); | |
1070 | break; | |
230282a7 | 1071 | } |
28f49616 JD |
1072 | |
1073 | return 0; | |
230282a7 JD |
1074 | } |
1075 | ||
3d95fd6a JD |
1076 | /* |
1077 | * (value from firmware) * 10 + 790 = dpi | |
1078 | * we also have to convert dpi to dots/mm (*10/254 to avoid floating point) | |
1079 | */ | |
1080 | static unsigned int elantech_convert_res(unsigned int val) | |
1081 | { | |
1082 | return (val * 10 + 790) * 10 / 254; | |
1083 | } | |
1084 | ||
1085 | static int elantech_get_resolution_v4(struct psmouse *psmouse, | |
1086 | unsigned int *x_res, | |
1087 | unsigned int *y_res) | |
1088 | { | |
1089 | unsigned char param[3]; | |
1090 | ||
1091 | if (elantech_send_cmd(psmouse, ETP_RESOLUTION_QUERY, param)) | |
1092 | return -1; | |
1093 | ||
1094 | *x_res = elantech_convert_res(param[1] & 0x0f); | |
1095 | *y_res = elantech_convert_res((param[1] & 0xf0) >> 4); | |
1096 | ||
1097 | return 0; | |
1098 | } | |
1099 | ||
c15bdfd5 HG |
1100 | /* |
1101 | * Advertise INPUT_PROP_BUTTONPAD for clickpads. The testing of bit 12 in | |
1102 | * fw_version for this is based on the following fw_version & caps table: | |
1103 | * | |
1104 | * Laptop-model: fw_version: caps: buttons: | |
1105 | * Acer S3 0x461f00 10, 13, 0e clickpad | |
1106 | * Acer S7-392 0x581f01 50, 17, 0d clickpad | |
1107 | * Acer V5-131 0x461f02 01, 16, 0c clickpad | |
1108 | * Acer V5-551 0x461f00 ? clickpad | |
1109 | * Asus K53SV 0x450f01 78, 15, 0c 2 hw buttons | |
1110 | * Asus G46VW 0x460f02 00, 18, 0c 2 hw buttons | |
1111 | * Asus G750JX 0x360f00 00, 16, 0c 2 hw buttons | |
bd884149 UDB |
1112 | * Asus TP500LN 0x381f17 10, 14, 0e clickpad |
1113 | * Asus X750JN 0x381f17 10, 14, 0e clickpad | |
c15bdfd5 HG |
1114 | * Asus UX31 0x361f00 20, 15, 0e clickpad |
1115 | * Asus UX32VD 0x361f02 00, 15, 0e clickpad | |
1116 | * Avatar AVIU-145A2 0x361f00 ? clickpad | |
47c1ffb2 RK |
1117 | * Fujitsu LIFEBOOK E544 0x470f00 d0, 12, 09 2 hw buttons |
1118 | * Fujitsu LIFEBOOK E554 0x570f01 40, 14, 0c 2 hw buttons | |
a2418fc4 | 1119 | * Fujitsu H730 0x570f00 c0, 14, 0c 3 hw buttons (**) |
c15bdfd5 HG |
1120 | * Gigabyte U2442 0x450f01 58, 17, 0c 2 hw buttons |
1121 | * Lenovo L430 0x350f02 b9, 15, 0c 2 hw buttons (*) | |
a2418fc4 | 1122 | * Lenovo L530 0x350f02 b9, 15, 0c 2 hw buttons (*) |
c15bdfd5 HG |
1123 | * Samsung NF210 0x150b00 78, 14, 0a 2 hw buttons |
1124 | * Samsung NP770Z5E 0x575f01 10, 15, 0f clickpad | |
1125 | * Samsung NP700Z5B 0x361f06 21, 15, 0f clickpad | |
1126 | * Samsung NP900X3E-A02 0x575f03 ? clickpad | |
1127 | * Samsung NP-QX410 0x851b00 19, 14, 0c clickpad | |
1128 | * Samsung RC512 0x450f00 08, 15, 0c 2 hw buttons | |
1129 | * Samsung RF710 0x450f00 ? 2 hw buttons | |
1130 | * System76 Pangolin 0x250f01 ? 2 hw buttons | |
1131 | * (*) + 3 trackpoint buttons | |
a2418fc4 UDB |
1132 | * (**) + 0 trackpoint buttons |
1133 | * Note: Lenovo L430 and Lenovo L430 have the same fw_version/caps | |
c15bdfd5 HG |
1134 | */ |
1135 | static void elantech_set_buttonpad_prop(struct psmouse *psmouse) | |
1136 | { | |
1137 | struct input_dev *dev = psmouse->dev; | |
1138 | struct elantech_data *etd = psmouse->private; | |
1139 | ||
1140 | if (etd->fw_version & 0x001000) { | |
1141 | __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); | |
1142 | __clear_bit(BTN_RIGHT, dev->keybit); | |
1143 | } | |
1144 | } | |
1145 | ||
f386474e UDB |
1146 | /* |
1147 | * Some hw_version 4 models do have a middle button | |
1148 | */ | |
1149 | static const struct dmi_system_id elantech_dmi_has_middle_button[] = { | |
1150 | #if defined(CONFIG_DMI) && defined(CONFIG_X86) | |
1151 | { | |
1152 | /* Fujitsu H730 has a middle button */ | |
1153 | .matches = { | |
1154 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
1155 | DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H730"), | |
1156 | }, | |
1157 | }, | |
1158 | #endif | |
1159 | { } | |
1160 | }; | |
1161 | ||
2a0bd75e AO |
1162 | /* |
1163 | * Set the appropriate event bits for the input subsystem | |
1164 | */ | |
28f49616 | 1165 | static int elantech_set_input_params(struct psmouse *psmouse) |
2a0bd75e AO |
1166 | { |
1167 | struct input_dev *dev = psmouse->dev; | |
1168 | struct elantech_data *etd = psmouse->private; | |
1dc6edec | 1169 | unsigned int x_min = 0, y_min = 0, x_max = 0, y_max = 0, width = 0; |
3d95fd6a | 1170 | unsigned int x_res = 0, y_res = 0; |
230282a7 | 1171 | |
1dc6edec | 1172 | if (elantech_set_range(psmouse, &x_min, &y_min, &x_max, &y_max, &width)) |
28f49616 | 1173 | return -1; |
2a0bd75e | 1174 | |
e3dde4fb | 1175 | __set_bit(INPUT_PROP_POINTER, dev->propbit); |
2a0bd75e AO |
1176 | __set_bit(EV_KEY, dev->evbit); |
1177 | __set_bit(EV_ABS, dev->evbit); | |
c7a1f3cc | 1178 | __clear_bit(EV_REL, dev->evbit); |
2a0bd75e AO |
1179 | |
1180 | __set_bit(BTN_LEFT, dev->keybit); | |
f386474e UDB |
1181 | if (dmi_check_system(elantech_dmi_has_middle_button)) |
1182 | __set_bit(BTN_MIDDLE, dev->keybit); | |
2a0bd75e AO |
1183 | __set_bit(BTN_RIGHT, dev->keybit); |
1184 | ||
1185 | __set_bit(BTN_TOUCH, dev->keybit); | |
1186 | __set_bit(BTN_TOOL_FINGER, dev->keybit); | |
1187 | __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); | |
1188 | __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit); | |
1189 | ||
1190 | switch (etd->hw_version) { | |
1191 | case 1: | |
1192 | /* Rocker button */ | |
504e8bee | 1193 | if (etd->fw_version < 0x020000 && |
230282a7 | 1194 | (etd->capabilities[0] & ETP_CAP_HAS_ROCKER)) { |
2a0bd75e AO |
1195 | __set_bit(BTN_FORWARD, dev->keybit); |
1196 | __set_bit(BTN_BACK, dev->keybit); | |
1197 | } | |
230282a7 JD |
1198 | input_set_abs_params(dev, ABS_X, x_min, x_max, 0, 0); |
1199 | input_set_abs_params(dev, ABS_Y, y_min, y_max, 0, 0); | |
2a0bd75e AO |
1200 | break; |
1201 | ||
1202 | case 2: | |
22462d9f | 1203 | __set_bit(BTN_TOOL_QUADTAP, dev->keybit); |
28f49616 JD |
1204 | __set_bit(INPUT_PROP_SEMI_MT, dev->propbit); |
1205 | /* fall through */ | |
1206 | case 3: | |
c15bdfd5 HG |
1207 | if (etd->hw_version == 3) |
1208 | elantech_set_buttonpad_prop(psmouse); | |
230282a7 JD |
1209 | input_set_abs_params(dev, ABS_X, x_min, x_max, 0, 0); |
1210 | input_set_abs_params(dev, ABS_Y, y_min, y_max, 0, 0); | |
f941c705 ÉP |
1211 | if (etd->reports_pressure) { |
1212 | input_set_abs_params(dev, ABS_PRESSURE, ETP_PMIN_V2, | |
1213 | ETP_PMAX_V2, 0, 0); | |
1214 | input_set_abs_params(dev, ABS_TOOL_WIDTH, ETP_WMIN_V2, | |
1215 | ETP_WMAX_V2, 0, 0); | |
1216 | } | |
b4adbbef | 1217 | input_mt_init_slots(dev, 2, 0); |
230282a7 JD |
1218 | input_set_abs_params(dev, ABS_MT_POSITION_X, x_min, x_max, 0, 0); |
1219 | input_set_abs_params(dev, ABS_MT_POSITION_Y, y_min, y_max, 0, 0); | |
2a0bd75e | 1220 | break; |
1dc6edec JD |
1221 | |
1222 | case 4: | |
3d95fd6a JD |
1223 | if (elantech_get_resolution_v4(psmouse, &x_res, &y_res)) { |
1224 | /* | |
1225 | * if query failed, print a warning and leave the values | |
1226 | * zero to resemble synaptics.c behavior. | |
1227 | */ | |
1228 | psmouse_warn(psmouse, "couldn't query resolution data.\n"); | |
1229 | } | |
c15bdfd5 | 1230 | elantech_set_buttonpad_prop(psmouse); |
1dc6edec JD |
1231 | __set_bit(BTN_TOOL_QUADTAP, dev->keybit); |
1232 | /* For X to recognize me as touchpad. */ | |
1233 | input_set_abs_params(dev, ABS_X, x_min, x_max, 0, 0); | |
1234 | input_set_abs_params(dev, ABS_Y, y_min, y_max, 0, 0); | |
3d95fd6a JD |
1235 | input_abs_set_res(dev, ABS_X, x_res); |
1236 | input_abs_set_res(dev, ABS_Y, y_res); | |
1dc6edec JD |
1237 | /* |
1238 | * range of pressure and width is the same as v2, | |
1239 | * report ABS_PRESSURE, ABS_TOOL_WIDTH for compatibility. | |
1240 | */ | |
1241 | input_set_abs_params(dev, ABS_PRESSURE, ETP_PMIN_V2, | |
1242 | ETP_PMAX_V2, 0, 0); | |
1243 | input_set_abs_params(dev, ABS_TOOL_WIDTH, ETP_WMIN_V2, | |
1244 | ETP_WMAX_V2, 0, 0); | |
1245 | /* Multitouch capable pad, up to 5 fingers. */ | |
b4adbbef | 1246 | input_mt_init_slots(dev, ETP_MAX_FINGERS, 0); |
1dc6edec JD |
1247 | input_set_abs_params(dev, ABS_MT_POSITION_X, x_min, x_max, 0, 0); |
1248 | input_set_abs_params(dev, ABS_MT_POSITION_Y, y_min, y_max, 0, 0); | |
3d95fd6a JD |
1249 | input_abs_set_res(dev, ABS_MT_POSITION_X, x_res); |
1250 | input_abs_set_res(dev, ABS_MT_POSITION_Y, y_res); | |
1dc6edec JD |
1251 | input_set_abs_params(dev, ABS_MT_PRESSURE, ETP_PMIN_V2, |
1252 | ETP_PMAX_V2, 0, 0); | |
1253 | /* | |
1254 | * The firmware reports how many trace lines the finger spans, | |
1255 | * convert to surface unit as Protocol-B requires. | |
1256 | */ | |
1257 | input_set_abs_params(dev, ABS_MT_TOUCH_MAJOR, 0, | |
1258 | ETP_WMAX_V2 * width, 0, 0); | |
1259 | break; | |
2a0bd75e | 1260 | } |
230282a7 JD |
1261 | |
1262 | etd->y_max = y_max; | |
1dc6edec | 1263 | etd->width = width; |
28f49616 JD |
1264 | |
1265 | return 0; | |
2a0bd75e AO |
1266 | } |
1267 | ||
1268 | struct elantech_attr_data { | |
1269 | size_t field_offset; | |
1270 | unsigned char reg; | |
1271 | }; | |
1272 | ||
1273 | /* | |
1274 | * Display a register value by reading a sysfs entry | |
1275 | */ | |
1276 | static ssize_t elantech_show_int_attr(struct psmouse *psmouse, void *data, | |
1277 | char *buf) | |
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; | |
1282 | int rc = 0; | |
1283 | ||
1284 | if (attr->reg) | |
1285 | rc = elantech_read_reg(psmouse, attr->reg, reg); | |
1286 | ||
1287 | return sprintf(buf, "0x%02x\n", (attr->reg && rc) ? -1 : *reg); | |
1288 | } | |
1289 | ||
1290 | /* | |
1291 | * Write a register value by writing a sysfs entry | |
1292 | */ | |
1293 | static ssize_t elantech_set_int_attr(struct psmouse *psmouse, | |
1294 | void *data, const char *buf, size_t count) | |
1295 | { | |
1296 | struct elantech_data *etd = psmouse->private; | |
1297 | struct elantech_attr_data *attr = data; | |
1298 | unsigned char *reg = (unsigned char *) etd + attr->field_offset; | |
76496e7a | 1299 | unsigned char value; |
2a0bd75e AO |
1300 | int err; |
1301 | ||
76496e7a | 1302 | err = kstrtou8(buf, 16, &value); |
2a0bd75e AO |
1303 | if (err) |
1304 | return err; | |
1305 | ||
2a0bd75e AO |
1306 | /* Do we need to preserve some bits for version 2 hardware too? */ |
1307 | if (etd->hw_version == 1) { | |
1308 | if (attr->reg == 0x10) | |
1309 | /* Force absolute mode always on */ | |
1310 | value |= ETP_R10_ABSOLUTE_MODE; | |
1311 | else if (attr->reg == 0x11) | |
1312 | /* Force 4 byte mode always on */ | |
1313 | value |= ETP_R11_4_BYTE_MODE; | |
1314 | } | |
1315 | ||
1316 | if (!attr->reg || elantech_write_reg(psmouse, attr->reg, value) == 0) | |
1317 | *reg = value; | |
1318 | ||
1319 | return count; | |
1320 | } | |
1321 | ||
1322 | #define ELANTECH_INT_ATTR(_name, _register) \ | |
1323 | static struct elantech_attr_data elantech_attr_##_name = { \ | |
1324 | .field_offset = offsetof(struct elantech_data, _name), \ | |
1325 | .reg = _register, \ | |
1326 | }; \ | |
1327 | PSMOUSE_DEFINE_ATTR(_name, S_IWUSR | S_IRUGO, \ | |
1328 | &elantech_attr_##_name, \ | |
1329 | elantech_show_int_attr, \ | |
1330 | elantech_set_int_attr) | |
1331 | ||
1dc6edec | 1332 | ELANTECH_INT_ATTR(reg_07, 0x07); |
2a0bd75e AO |
1333 | ELANTECH_INT_ATTR(reg_10, 0x10); |
1334 | ELANTECH_INT_ATTR(reg_11, 0x11); | |
1335 | ELANTECH_INT_ATTR(reg_20, 0x20); | |
1336 | ELANTECH_INT_ATTR(reg_21, 0x21); | |
1337 | ELANTECH_INT_ATTR(reg_22, 0x22); | |
1338 | ELANTECH_INT_ATTR(reg_23, 0x23); | |
1339 | ELANTECH_INT_ATTR(reg_24, 0x24); | |
1340 | ELANTECH_INT_ATTR(reg_25, 0x25); | |
1341 | ELANTECH_INT_ATTR(reg_26, 0x26); | |
1342 | ELANTECH_INT_ATTR(debug, 0); | |
1343 | ELANTECH_INT_ATTR(paritycheck, 0); | |
2d9eb81f | 1344 | ELANTECH_INT_ATTR(crc_enabled, 0); |
2a0bd75e AO |
1345 | |
1346 | static struct attribute *elantech_attrs[] = { | |
1dc6edec | 1347 | &psmouse_attr_reg_07.dattr.attr, |
2a0bd75e AO |
1348 | &psmouse_attr_reg_10.dattr.attr, |
1349 | &psmouse_attr_reg_11.dattr.attr, | |
1350 | &psmouse_attr_reg_20.dattr.attr, | |
1351 | &psmouse_attr_reg_21.dattr.attr, | |
1352 | &psmouse_attr_reg_22.dattr.attr, | |
1353 | &psmouse_attr_reg_23.dattr.attr, | |
1354 | &psmouse_attr_reg_24.dattr.attr, | |
1355 | &psmouse_attr_reg_25.dattr.attr, | |
1356 | &psmouse_attr_reg_26.dattr.attr, | |
1357 | &psmouse_attr_debug.dattr.attr, | |
1358 | &psmouse_attr_paritycheck.dattr.attr, | |
2d9eb81f | 1359 | &psmouse_attr_crc_enabled.dattr.attr, |
2a0bd75e AO |
1360 | NULL |
1361 | }; | |
1362 | ||
1363 | static struct attribute_group elantech_attr_group = { | |
1364 | .attrs = elantech_attrs, | |
1365 | }; | |
1366 | ||
a083632e DT |
1367 | static bool elantech_is_signature_valid(const unsigned char *param) |
1368 | { | |
1369 | static const unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10 }; | |
1370 | int i; | |
1371 | ||
1372 | if (param[0] == 0) | |
1373 | return false; | |
1374 | ||
1375 | if (param[1] == 0) | |
1376 | return true; | |
1377 | ||
271329b3 HG |
1378 | /* |
1379 | * Some models have a revision higher then 20. Meaning param[2] may | |
1380 | * be 10 or 20, skip the rates check for these. | |
1381 | */ | |
1382 | if (param[0] == 0x46 && (param[1] & 0xef) == 0x0f && param[2] < 40) | |
1383 | return true; | |
1384 | ||
a083632e DT |
1385 | for (i = 0; i < ARRAY_SIZE(rates); i++) |
1386 | if (param[2] == rates[i]) | |
1387 | return false; | |
1388 | ||
1389 | return true; | |
1390 | } | |
1391 | ||
2a0bd75e AO |
1392 | /* |
1393 | * Use magic knock to detect Elantech touchpad | |
1394 | */ | |
b7802c5c | 1395 | int elantech_detect(struct psmouse *psmouse, bool set_properties) |
2a0bd75e AO |
1396 | { |
1397 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
1398 | unsigned char param[3]; | |
1399 | ||
1400 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); | |
1401 | ||
1402 | if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || | |
1403 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || | |
1404 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || | |
1405 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || | |
1406 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) { | |
b5d21704 | 1407 | psmouse_dbg(psmouse, "sending Elantech magic knock failed.\n"); |
2a0bd75e AO |
1408 | return -1; |
1409 | } | |
1410 | ||
1411 | /* | |
1412 | * Report this in case there are Elantech models that use a different | |
1413 | * set of magic numbers | |
1414 | */ | |
28f49616 JD |
1415 | if (param[0] != 0x3c || param[1] != 0x03 || |
1416 | (param[2] != 0xc8 && param[2] != 0x00)) { | |
b5d21704 DT |
1417 | psmouse_dbg(psmouse, |
1418 | "unexpected magic knock result 0x%02x, 0x%02x, 0x%02x.\n", | |
1419 | param[0], param[1], param[2]); | |
9ab7b25e AO |
1420 | return -1; |
1421 | } | |
1422 | ||
1423 | /* | |
1424 | * Query touchpad's firmware version and see if it reports known | |
1425 | * value to avoid mis-detection. Logitech mice are known to respond | |
1426 | * to Elantech magic knock and there might be more. | |
1427 | */ | |
1428 | if (synaptics_send_cmd(psmouse, ETP_FW_VERSION_QUERY, param)) { | |
b5d21704 | 1429 | psmouse_dbg(psmouse, "failed to query firmware version.\n"); |
9ab7b25e AO |
1430 | return -1; |
1431 | } | |
1432 | ||
b5d21704 DT |
1433 | psmouse_dbg(psmouse, |
1434 | "Elantech version query result 0x%02x, 0x%02x, 0x%02x.\n", | |
1435 | param[0], param[1], param[2]); | |
9ab7b25e | 1436 | |
a083632e | 1437 | if (!elantech_is_signature_valid(param)) { |
b5d21704 DT |
1438 | psmouse_dbg(psmouse, |
1439 | "Probably not a real Elantech touchpad. Aborting.\n"); | |
4af61e90 | 1440 | return -1; |
2a0bd75e AO |
1441 | } |
1442 | ||
1443 | if (set_properties) { | |
1444 | psmouse->vendor = "Elantech"; | |
1445 | psmouse->name = "Touchpad"; | |
1446 | } | |
1447 | ||
1448 | return 0; | |
1449 | } | |
1450 | ||
1451 | /* | |
1452 | * Clean up sysfs entries when disconnecting | |
1453 | */ | |
1454 | static void elantech_disconnect(struct psmouse *psmouse) | |
1455 | { | |
a2418fc4 UDB |
1456 | struct elantech_data *etd = psmouse->private; |
1457 | ||
1458 | if (etd->tp_dev) | |
1459 | input_unregister_device(etd->tp_dev); | |
2a0bd75e AO |
1460 | sysfs_remove_group(&psmouse->ps2dev.serio->dev.kobj, |
1461 | &elantech_attr_group); | |
1462 | kfree(psmouse->private); | |
1463 | psmouse->private = NULL; | |
1464 | } | |
1465 | ||
1466 | /* | |
1467 | * Put the touchpad back into absolute mode when reconnecting | |
1468 | */ | |
1469 | static int elantech_reconnect(struct psmouse *psmouse) | |
1470 | { | |
a67ada7a JD |
1471 | psmouse_reset(psmouse); |
1472 | ||
2a0bd75e AO |
1473 | if (elantech_detect(psmouse, 0)) |
1474 | return -1; | |
1475 | ||
1476 | if (elantech_set_absolute_mode(psmouse)) { | |
b5d21704 DT |
1477 | psmouse_err(psmouse, |
1478 | "failed to put touchpad back into absolute mode.\n"); | |
2a0bd75e AO |
1479 | return -1; |
1480 | } | |
1481 | ||
1482 | return 0; | |
1483 | } | |
1484 | ||
0dc15879 UDB |
1485 | /* |
1486 | * Some hw_version 4 models do not work with crc_disabled | |
1487 | */ | |
1488 | static const struct dmi_system_id elantech_dmi_force_crc_enabled[] = { | |
1489 | #if defined(CONFIG_DMI) && defined(CONFIG_X86) | |
1490 | { | |
1491 | /* Fujitsu H730 does not work with crc_enabled == 0 */ | |
1492 | .matches = { | |
1493 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
1494 | DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H730"), | |
1495 | }, | |
1496 | }, | |
47c1ffb2 RK |
1497 | { |
1498 | /* Fujitsu LIFEBOOK E554 does not work with crc_enabled == 0 */ | |
1499 | .matches = { | |
1500 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
1501 | DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E554"), | |
1502 | }, | |
1503 | }, | |
1504 | { | |
1505 | /* Fujitsu LIFEBOOK E544 does not work with crc_enabled == 0 */ | |
1506 | .matches = { | |
1507 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
1508 | DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E544"), | |
1509 | }, | |
1510 | }, | |
0dc15879 UDB |
1511 | #endif |
1512 | { } | |
1513 | }; | |
1514 | ||
36189cc3 | 1515 | /* |
fb4f8f56 HG |
1516 | * Some hw_version 3 models go into error state when we try to set |
1517 | * bit 3 and/or bit 1 of r10. | |
36189cc3 HG |
1518 | */ |
1519 | static const struct dmi_system_id no_hw_res_dmi_table[] = { | |
1520 | #if defined(CONFIG_DMI) && defined(CONFIG_X86) | |
1521 | { | |
1522 | /* Gigabyte U2442 */ | |
1523 | .matches = { | |
1524 | DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"), | |
1525 | DMI_MATCH(DMI_PRODUCT_NAME, "U2442"), | |
1526 | }, | |
1527 | }, | |
1528 | #endif | |
1529 | { } | |
1530 | }; | |
1531 | ||
3c8bbb95 JD |
1532 | /* |
1533 | * determine hardware version and set some properties according to it. | |
1534 | */ | |
28f49616 | 1535 | static int elantech_set_properties(struct elantech_data *etd) |
3c8bbb95 | 1536 | { |
3940d618 | 1537 | /* This represents the version of IC body. */ |
1dc6edec JD |
1538 | int ver = (etd->fw_version & 0x0f0000) >> 16; |
1539 | ||
3940d618 | 1540 | /* Early version of Elan touchpads doesn't obey the rule. */ |
3c8bbb95 JD |
1541 | if (etd->fw_version < 0x020030 || etd->fw_version == 0x020600) |
1542 | etd->hw_version = 1; | |
3940d618 JD |
1543 | else { |
1544 | switch (ver) { | |
1545 | case 2: | |
1546 | case 4: | |
1547 | etd->hw_version = 2; | |
1548 | break; | |
1549 | case 5: | |
1550 | etd->hw_version = 3; | |
1551 | break; | |
1552 | case 6: | |
9eebed7d | 1553 | case 7: |
9cb80b96 | 1554 | case 8: |
ae4bedf0 | 1555 | case 9: |
810aa091 S |
1556 | case 10: |
1557 | case 13: | |
3940d618 JD |
1558 | etd->hw_version = 4; |
1559 | break; | |
1560 | default: | |
1561 | return -1; | |
1562 | } | |
1563 | } | |
3c8bbb95 | 1564 | |
b56b92a9 JD |
1565 | /* decide which send_cmd we're gonna use early */ |
1566 | etd->send_cmd = etd->hw_version >= 3 ? elantech_send_cmd : | |
1567 | synaptics_send_cmd; | |
1568 | ||
1569 | /* Turn on packet checking by default */ | |
3c8bbb95 JD |
1570 | etd->paritycheck = 1; |
1571 | ||
1572 | /* | |
1573 | * This firmware suffers from misreporting coordinates when | |
1574 | * a touch action starts causing the mouse cursor or scrolled page | |
1575 | * to jump. Enable a workaround. | |
1576 | */ | |
1577 | etd->jumpy_cursor = | |
1578 | (etd->fw_version == 0x020022 || etd->fw_version == 0x020600); | |
1579 | ||
28f49616 | 1580 | if (etd->hw_version > 1) { |
3c8bbb95 JD |
1581 | /* For now show extra debug information */ |
1582 | etd->debug = 1; | |
1583 | ||
1584 | if (etd->fw_version >= 0x020800) | |
1585 | etd->reports_pressure = true; | |
1586 | } | |
28f49616 | 1587 | |
acc0444b MD |
1588 | /* |
1589 | * The signatures of v3 and v4 packets change depending on the | |
1590 | * value of this hardware flag. | |
1591 | */ | |
0dc15879 UDB |
1592 | etd->crc_enabled = (etd->fw_version & 0x4000) == 0x4000 || |
1593 | dmi_check_system(elantech_dmi_force_crc_enabled); | |
acc0444b | 1594 | |
36189cc3 HG |
1595 | /* Enable real hardware resolution on hw_version 3 ? */ |
1596 | etd->set_hw_resolution = !dmi_check_system(no_hw_res_dmi_table); | |
1597 | ||
28f49616 | 1598 | return 0; |
3c8bbb95 JD |
1599 | } |
1600 | ||
2a0bd75e AO |
1601 | /* |
1602 | * Initialize the touchpad and create sysfs entries | |
1603 | */ | |
1604 | int elantech_init(struct psmouse *psmouse) | |
1605 | { | |
1606 | struct elantech_data *etd; | |
a2418fc4 UDB |
1607 | int i; |
1608 | int error = -EINVAL; | |
2a0bd75e | 1609 | unsigned char param[3]; |
a2418fc4 | 1610 | struct input_dev *tp_dev; |
2a0bd75e | 1611 | |
9ab7b25e | 1612 | psmouse->private = etd = kzalloc(sizeof(struct elantech_data), GFP_KERNEL); |
2a0bd75e | 1613 | if (!etd) |
6792cbbb | 1614 | return -ENOMEM; |
2a0bd75e | 1615 | |
a67ada7a JD |
1616 | psmouse_reset(psmouse); |
1617 | ||
2a0bd75e AO |
1618 | etd->parity[0] = 1; |
1619 | for (i = 1; i < 256; i++) | |
1620 | etd->parity[i] = etd->parity[i & (i - 1)] ^ 1; | |
1621 | ||
1622 | /* | |
9ab7b25e | 1623 | * Do the version query again so we can store the result |
2a0bd75e AO |
1624 | */ |
1625 | if (synaptics_send_cmd(psmouse, ETP_FW_VERSION_QUERY, param)) { | |
b5d21704 | 1626 | psmouse_err(psmouse, "failed to query firmware version.\n"); |
2a0bd75e AO |
1627 | goto init_fail; |
1628 | } | |
504e8bee | 1629 | etd->fw_version = (param[0] << 16) | (param[1] << 8) | param[2]; |
28f49616 JD |
1630 | |
1631 | if (elantech_set_properties(etd)) { | |
b5d21704 | 1632 | psmouse_err(psmouse, "unknown hardware version, aborting...\n"); |
28f49616 JD |
1633 | goto init_fail; |
1634 | } | |
b5d21704 DT |
1635 | psmouse_info(psmouse, |
1636 | "assuming hardware version %d (with firmware version 0x%02x%02x%02x)\n", | |
1637 | etd->hw_version, param[0], param[1], param[2]); | |
2a0bd75e | 1638 | |
b56b92a9 | 1639 | if (etd->send_cmd(psmouse, ETP_CAPABILITIES_QUERY, |
230282a7 | 1640 | etd->capabilities)) { |
b5d21704 | 1641 | psmouse_err(psmouse, "failed to query capabilities.\n"); |
2a0bd75e AO |
1642 | goto init_fail; |
1643 | } | |
b5d21704 DT |
1644 | psmouse_info(psmouse, |
1645 | "Synaptics capabilities query result 0x%02x, 0x%02x, 0x%02x.\n", | |
1646 | etd->capabilities[0], etd->capabilities[1], | |
1647 | etd->capabilities[2]); | |
2a0bd75e AO |
1648 | |
1649 | if (elantech_set_absolute_mode(psmouse)) { | |
b5d21704 DT |
1650 | psmouse_err(psmouse, |
1651 | "failed to put touchpad into absolute mode.\n"); | |
2a0bd75e AO |
1652 | goto init_fail; |
1653 | } | |
1654 | ||
bd884149 UDB |
1655 | if (etd->fw_version == 0x381f17) { |
1656 | etd->original_set_rate = psmouse->set_rate; | |
1657 | psmouse->set_rate = elantech_set_rate_restore_reg_07; | |
1658 | } | |
1659 | ||
28f49616 | 1660 | if (elantech_set_input_params(psmouse)) { |
b5d21704 | 1661 | psmouse_err(psmouse, "failed to query touchpad range.\n"); |
28f49616 JD |
1662 | goto init_fail; |
1663 | } | |
2a0bd75e AO |
1664 | |
1665 | error = sysfs_create_group(&psmouse->ps2dev.serio->dev.kobj, | |
1666 | &elantech_attr_group); | |
1667 | if (error) { | |
b5d21704 DT |
1668 | psmouse_err(psmouse, |
1669 | "failed to create sysfs attributes, error: %d.\n", | |
1670 | error); | |
2a0bd75e AO |
1671 | goto init_fail; |
1672 | } | |
1673 | ||
a2418fc4 UDB |
1674 | /* The MSB indicates the presence of the trackpoint */ |
1675 | if ((etd->capabilities[0] & 0x80) == 0x80) { | |
1676 | tp_dev = input_allocate_device(); | |
1677 | ||
1678 | if (!tp_dev) { | |
1679 | error = -ENOMEM; | |
1680 | goto init_fail_tp_alloc; | |
1681 | } | |
1682 | ||
1683 | etd->tp_dev = tp_dev; | |
1684 | snprintf(etd->tp_phys, sizeof(etd->tp_phys), "%s/input1", | |
1685 | psmouse->ps2dev.serio->phys); | |
1686 | tp_dev->phys = etd->tp_phys; | |
1687 | tp_dev->name = "Elantech PS/2 TrackPoint"; | |
1688 | tp_dev->id.bustype = BUS_I8042; | |
1689 | tp_dev->id.vendor = 0x0002; | |
1690 | tp_dev->id.product = PSMOUSE_ELANTECH; | |
1691 | tp_dev->id.version = 0x0000; | |
1692 | tp_dev->dev.parent = &psmouse->ps2dev.serio->dev; | |
1693 | tp_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); | |
1694 | tp_dev->relbit[BIT_WORD(REL_X)] = | |
1695 | BIT_MASK(REL_X) | BIT_MASK(REL_Y); | |
1696 | tp_dev->keybit[BIT_WORD(BTN_LEFT)] = | |
1697 | BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | | |
1698 | BIT_MASK(BTN_RIGHT); | |
7611392f | 1699 | |
01d4cd5c | 1700 | __set_bit(INPUT_PROP_POINTER, tp_dev->propbit); |
7611392f HG |
1701 | __set_bit(INPUT_PROP_POINTING_STICK, tp_dev->propbit); |
1702 | ||
a2418fc4 UDB |
1703 | error = input_register_device(etd->tp_dev); |
1704 | if (error < 0) | |
1705 | goto init_fail_tp_reg; | |
1706 | } | |
1707 | ||
2a0bd75e AO |
1708 | psmouse->protocol_handler = elantech_process_byte; |
1709 | psmouse->disconnect = elantech_disconnect; | |
1710 | psmouse->reconnect = elantech_reconnect; | |
28f49616 | 1711 | psmouse->pktsize = etd->hw_version > 1 ? 6 : 4; |
2a0bd75e AO |
1712 | |
1713 | return 0; | |
a2418fc4 UDB |
1714 | init_fail_tp_reg: |
1715 | input_free_device(tp_dev); | |
1716 | init_fail_tp_alloc: | |
1717 | sysfs_remove_group(&psmouse->ps2dev.serio->dev.kobj, | |
1718 | &elantech_attr_group); | |
2a0bd75e | 1719 | init_fail: |
ac84eba2 | 1720 | psmouse_reset(psmouse); |
2a0bd75e | 1721 | kfree(etd); |
a2418fc4 | 1722 | return error; |
2a0bd75e | 1723 | } |