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 | 16 | #include <linux/module.h> |
21c48dbd | 17 | #include <linux/i2c.h> |
2a0bd75e | 18 | #include <linux/input.h> |
89eec4d7 | 19 | #include <linux/input/mt.h> |
21c48dbd | 20 | #include <linux/platform_device.h> |
2a0bd75e AO |
21 | #include <linux/serio.h> |
22 | #include <linux/libps2.h> | |
a2418fc4 | 23 | #include <asm/unaligned.h> |
2a0bd75e AO |
24 | #include "psmouse.h" |
25 | #include "elantech.h" | |
21c48dbd | 26 | #include "elan_i2c.h" |
2a0bd75e | 27 | |
d4ae84a8 DT |
28 | #define elantech_debug(fmt, ...) \ |
29 | do { \ | |
f0787592 | 30 | if (etd->info.debug) \ |
b5d21704 DT |
31 | psmouse_printk(KERN_DEBUG, psmouse, \ |
32 | fmt, ##__VA_ARGS__); \ | |
2a0bd75e AO |
33 | } while (0) |
34 | ||
35 | /* | |
36 | * Send a Synaptics style sliced query command | |
37 | */ | |
38 | static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, | |
39 | unsigned char *param) | |
40 | { | |
08be954b | 41 | if (ps2_sliced_command(&psmouse->ps2dev, c) || |
2a0bd75e | 42 | ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) { |
b5d21704 | 43 | psmouse_err(psmouse, "%s query 0x%02x failed.\n", __func__, c); |
2a0bd75e AO |
44 | return -1; |
45 | } | |
46 | ||
47 | return 0; | |
48 | } | |
49 | ||
b56b92a9 JD |
50 | /* |
51 | * V3 and later support this fast command | |
52 | */ | |
53 | static int elantech_send_cmd(struct psmouse *psmouse, unsigned char c, | |
54 | unsigned char *param) | |
55 | { | |
56 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
57 | ||
58 | if (ps2_command(ps2dev, NULL, ETP_PS2_CUSTOM_COMMAND) || | |
59 | ps2_command(ps2dev, NULL, c) || | |
60 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) { | |
61 | psmouse_err(psmouse, "%s query 0x%02x failed.\n", __func__, c); | |
62 | return -1; | |
63 | } | |
64 | ||
65 | return 0; | |
66 | } | |
67 | ||
2a0bd75e AO |
68 | /* |
69 | * A retrying version of ps2_command | |
70 | */ | |
71 | static int elantech_ps2_command(struct psmouse *psmouse, | |
72 | unsigned char *param, int command) | |
73 | { | |
74 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
75 | struct elantech_data *etd = psmouse->private; | |
76 | int rc; | |
77 | int tries = ETP_PS2_COMMAND_TRIES; | |
78 | ||
79 | do { | |
80 | rc = ps2_command(ps2dev, param, command); | |
81 | if (rc == 0) | |
82 | break; | |
83 | tries--; | |
d4ae84a8 DT |
84 | elantech_debug("retrying ps2 command 0x%02x (%d).\n", |
85 | command, tries); | |
2a0bd75e AO |
86 | msleep(ETP_PS2_COMMAND_DELAY); |
87 | } while (tries > 0); | |
88 | ||
89 | if (rc) | |
b5d21704 | 90 | psmouse_err(psmouse, "ps2 command 0x%02x failed.\n", command); |
2a0bd75e AO |
91 | |
92 | return rc; | |
93 | } | |
94 | ||
95 | /* | |
96 | * Send an Elantech style special command to read a value from a register | |
97 | */ | |
98 | static int elantech_read_reg(struct psmouse *psmouse, unsigned char reg, | |
99 | unsigned char *val) | |
100 | { | |
101 | struct elantech_data *etd = psmouse->private; | |
102 | unsigned char param[3]; | |
103 | int rc = 0; | |
104 | ||
1dc6edec | 105 | if (reg < 0x07 || reg > 0x26) |
2a0bd75e AO |
106 | return -1; |
107 | ||
108 | if (reg > 0x11 && reg < 0x20) | |
109 | return -1; | |
110 | ||
f0787592 | 111 | switch (etd->info.hw_version) { |
2a0bd75e | 112 | case 1: |
08be954b DT |
113 | if (ps2_sliced_command(&psmouse->ps2dev, ETP_REGISTER_READ) || |
114 | ps2_sliced_command(&psmouse->ps2dev, reg) || | |
2a0bd75e AO |
115 | ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) { |
116 | rc = -1; | |
117 | } | |
118 | break; | |
119 | ||
120 | case 2: | |
121 | if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) || | |
122 | elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READ) || | |
123 | elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) || | |
124 | elantech_ps2_command(psmouse, NULL, reg) || | |
125 | elantech_ps2_command(psmouse, param, PSMOUSE_CMD_GETINFO)) { | |
126 | rc = -1; | |
127 | } | |
128 | break; | |
28f49616 | 129 | |
1dc6edec | 130 | case 3 ... 4: |
28f49616 JD |
131 | if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) || |
132 | elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READWRITE) || | |
133 | elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) || | |
134 | elantech_ps2_command(psmouse, NULL, reg) || | |
135 | elantech_ps2_command(psmouse, param, PSMOUSE_CMD_GETINFO)) { | |
136 | rc = -1; | |
137 | } | |
138 | break; | |
2a0bd75e AO |
139 | } |
140 | ||
141 | if (rc) | |
b5d21704 | 142 | psmouse_err(psmouse, "failed to read register 0x%02x.\n", reg); |
f0787592 | 143 | else if (etd->info.hw_version != 4) |
2a0bd75e | 144 | *val = param[0]; |
1dc6edec JD |
145 | else |
146 | *val = param[1]; | |
2a0bd75e AO |
147 | |
148 | return rc; | |
149 | } | |
150 | ||
151 | /* | |
152 | * Send an Elantech style special command to write a register with a value | |
153 | */ | |
154 | static int elantech_write_reg(struct psmouse *psmouse, unsigned char reg, | |
155 | unsigned char val) | |
156 | { | |
157 | struct elantech_data *etd = psmouse->private; | |
158 | int rc = 0; | |
159 | ||
1dc6edec | 160 | if (reg < 0x07 || reg > 0x26) |
2a0bd75e AO |
161 | return -1; |
162 | ||
163 | if (reg > 0x11 && reg < 0x20) | |
164 | return -1; | |
165 | ||
f0787592 | 166 | switch (etd->info.hw_version) { |
2a0bd75e | 167 | case 1: |
08be954b DT |
168 | if (ps2_sliced_command(&psmouse->ps2dev, ETP_REGISTER_WRITE) || |
169 | ps2_sliced_command(&psmouse->ps2dev, reg) || | |
170 | ps2_sliced_command(&psmouse->ps2dev, val) || | |
2a0bd75e AO |
171 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11)) { |
172 | rc = -1; | |
173 | } | |
174 | break; | |
175 | ||
176 | case 2: | |
177 | if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) || | |
178 | elantech_ps2_command(psmouse, NULL, ETP_REGISTER_WRITE) || | |
179 | elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) || | |
180 | elantech_ps2_command(psmouse, NULL, reg) || | |
181 | elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) || | |
182 | elantech_ps2_command(psmouse, NULL, val) || | |
183 | elantech_ps2_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11)) { | |
184 | rc = -1; | |
185 | } | |
186 | break; | |
28f49616 JD |
187 | |
188 | case 3: | |
189 | if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) || | |
190 | elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READWRITE) || | |
191 | elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) || | |
192 | elantech_ps2_command(psmouse, NULL, reg) || | |
193 | elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) || | |
194 | elantech_ps2_command(psmouse, NULL, val) || | |
195 | elantech_ps2_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11)) { | |
196 | rc = -1; | |
197 | } | |
198 | break; | |
1dc6edec JD |
199 | |
200 | case 4: | |
201 | if (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, reg) || | |
205 | elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) || | |
206 | elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READWRITE) || | |
207 | elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) || | |
208 | elantech_ps2_command(psmouse, NULL, val) || | |
209 | elantech_ps2_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11)) { | |
210 | rc = -1; | |
211 | } | |
212 | break; | |
2a0bd75e AO |
213 | } |
214 | ||
215 | if (rc) | |
b5d21704 DT |
216 | psmouse_err(psmouse, |
217 | "failed to write register 0x%02x with value 0x%02x.\n", | |
218 | reg, val); | |
2a0bd75e AO |
219 | |
220 | return rc; | |
221 | } | |
222 | ||
223 | /* | |
224 | * Dump a complete mouse movement packet to the syslog | |
225 | */ | |
b5d21704 | 226 | static void elantech_packet_dump(struct psmouse *psmouse) |
2a0bd75e | 227 | { |
014420fe BT |
228 | psmouse_printk(KERN_DEBUG, psmouse, "PS/2 packet [%*ph]\n", |
229 | psmouse->pktsize, psmouse->packet); | |
2a0bd75e AO |
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 | ||
f0787592 | 243 | if (etd->info.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 | ||
f0787592 | 258 | if (etd->info.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); | |
1ef85805 DT |
285 | |
286 | psmouse_report_standard_buttons(dev, packet[0]); | |
2a0bd75e | 287 | |
f0787592 BT |
288 | if (etd->info.fw_version < 0x020000 && |
289 | (etd->info.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); | |
3c0213d1 | 317 | elantech_set_slot(dev, 1, num_fingers >= 2, x2, y2); |
89eec4d7 ÉP |
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); |
1ef85805 | 396 | psmouse_report_standard_buttons(dev, packet[0]); |
f0787592 | 397 | if (etd->info.reports_pressure) { |
f941c705 ÉP |
398 | input_report_abs(dev, ABS_PRESSURE, pres); |
399 | input_report_abs(dev, ABS_TOOL_WIDTH, width); | |
400 | } | |
2a0bd75e AO |
401 | |
402 | input_sync(dev); | |
403 | } | |
404 | ||
a2418fc4 UDB |
405 | static void elantech_report_trackpoint(struct psmouse *psmouse, |
406 | int packet_type) | |
407 | { | |
408 | /* | |
409 | * byte 0: 0 0 sx sy 0 M R L | |
410 | * byte 1:~sx 0 0 0 0 0 0 0 | |
411 | * byte 2:~sy 0 0 0 0 0 0 0 | |
412 | * byte 3: 0 0 ~sy ~sx 0 1 1 0 | |
413 | * byte 4: x7 x6 x5 x4 x3 x2 x1 x0 | |
414 | * byte 5: y7 y6 y5 y4 y3 y2 y1 y0 | |
415 | * | |
416 | * x and y are written in two's complement spread | |
417 | * over 9 bits with sx/sy the relative top bit and | |
418 | * x7..x0 and y7..y0 the lower bits. | |
419 | * The sign of y is opposite to what the input driver | |
420 | * expects for a relative movement | |
421 | */ | |
422 | ||
423 | struct elantech_data *etd = psmouse->private; | |
424 | struct input_dev *tp_dev = etd->tp_dev; | |
425 | unsigned char *packet = psmouse->packet; | |
426 | int x, y; | |
427 | u32 t; | |
428 | ||
a2418fc4 UDB |
429 | t = get_unaligned_le32(&packet[0]); |
430 | ||
431 | switch (t & ~7U) { | |
432 | case 0x06000030U: | |
433 | case 0x16008020U: | |
434 | case 0x26800010U: | |
435 | case 0x36808000U: | |
436 | x = packet[4] - (int)((packet[1]^0x80) << 1); | |
437 | y = (int)((packet[2]^0x80) << 1) - packet[5]; | |
438 | ||
1ef85805 | 439 | psmouse_report_standard_buttons(tp_dev, packet[0]); |
a2418fc4 UDB |
440 | |
441 | input_report_rel(tp_dev, REL_X, x); | |
442 | input_report_rel(tp_dev, REL_Y, y); | |
443 | ||
444 | input_sync(tp_dev); | |
445 | ||
446 | break; | |
447 | ||
448 | default: | |
449 | /* Dump unexpected packet sequences if debug=1 (default) */ | |
f0787592 | 450 | if (etd->info.debug == 1) |
a2418fc4 UDB |
451 | elantech_packet_dump(psmouse); |
452 | ||
453 | break; | |
454 | } | |
455 | } | |
456 | ||
28f49616 JD |
457 | /* |
458 | * Interpret complete data packets and report absolute mode input events for | |
459 | * hardware version 3. (12 byte packets for two fingers) | |
460 | */ | |
461 | static void elantech_report_absolute_v3(struct psmouse *psmouse, | |
462 | int packet_type) | |
463 | { | |
464 | struct input_dev *dev = psmouse->dev; | |
465 | struct elantech_data *etd = psmouse->private; | |
466 | unsigned char *packet = psmouse->packet; | |
467 | unsigned int fingers = 0, x1 = 0, y1 = 0, x2 = 0, y2 = 0; | |
468 | unsigned int width = 0, pres = 0; | |
469 | ||
470 | /* byte 0: n1 n0 . . . . R L */ | |
471 | fingers = (packet[0] & 0xc0) >> 6; | |
472 | ||
473 | switch (fingers) { | |
474 | case 3: | |
475 | case 1: | |
476 | /* | |
477 | * byte 1: . . . . x11 x10 x9 x8 | |
478 | * byte 2: x7 x6 x5 x4 x4 x2 x1 x0 | |
479 | */ | |
480 | x1 = ((packet[1] & 0x0f) << 8) | packet[2]; | |
481 | /* | |
482 | * byte 4: . . . . y11 y10 y9 y8 | |
483 | * byte 5: y7 y6 y5 y4 y3 y2 y1 y0 | |
484 | */ | |
485 | y1 = etd->y_max - (((packet[4] & 0x0f) << 8) | packet[5]); | |
486 | break; | |
487 | ||
488 | case 2: | |
489 | if (packet_type == PACKET_V3_HEAD) { | |
490 | /* | |
491 | * byte 1: . . . . ax11 ax10 ax9 ax8 | |
492 | * byte 2: ax7 ax6 ax5 ax4 ax3 ax2 ax1 ax0 | |
493 | */ | |
1dc6edec | 494 | etd->mt[0].x = ((packet[1] & 0x0f) << 8) | packet[2]; |
28f49616 JD |
495 | /* |
496 | * byte 4: . . . . ay11 ay10 ay9 ay8 | |
497 | * byte 5: ay7 ay6 ay5 ay4 ay3 ay2 ay1 ay0 | |
498 | */ | |
1dc6edec | 499 | etd->mt[0].y = etd->y_max - |
28f49616 JD |
500 | (((packet[4] & 0x0f) << 8) | packet[5]); |
501 | /* | |
502 | * wait for next packet | |
503 | */ | |
504 | return; | |
505 | } | |
506 | ||
507 | /* packet_type == PACKET_V3_TAIL */ | |
1dc6edec JD |
508 | x1 = etd->mt[0].x; |
509 | y1 = etd->mt[0].y; | |
28f49616 JD |
510 | x2 = ((packet[1] & 0x0f) << 8) | packet[2]; |
511 | y2 = etd->y_max - (((packet[4] & 0x0f) << 8) | packet[5]); | |
512 | break; | |
513 | } | |
514 | ||
515 | pres = (packet[1] & 0xf0) | ((packet[4] & 0xf0) >> 4); | |
516 | width = ((packet[0] & 0x30) >> 2) | ((packet[3] & 0x30) >> 4); | |
517 | ||
518 | input_report_key(dev, BTN_TOUCH, fingers != 0); | |
519 | if (fingers != 0) { | |
520 | input_report_abs(dev, ABS_X, x1); | |
521 | input_report_abs(dev, ABS_Y, y1); | |
522 | } | |
523 | elantech_report_semi_mt_data(dev, fingers, x1, y1, x2, y2); | |
524 | input_report_key(dev, BTN_TOOL_FINGER, fingers == 1); | |
525 | input_report_key(dev, BTN_TOOL_DOUBLETAP, fingers == 2); | |
526 | input_report_key(dev, BTN_TOOL_TRIPLETAP, fingers == 3); | |
cd9e83e2 HG |
527 | |
528 | /* For clickpads map both buttons to BTN_LEFT */ | |
f0787592 | 529 | if (etd->info.fw_version & 0x001000) |
cd9e83e2 | 530 | input_report_key(dev, BTN_LEFT, packet[0] & 0x03); |
1ef85805 DT |
531 | else |
532 | psmouse_report_standard_buttons(dev, packet[0]); | |
cd9e83e2 | 533 | |
28f49616 JD |
534 | input_report_abs(dev, ABS_PRESSURE, pres); |
535 | input_report_abs(dev, ABS_TOOL_WIDTH, width); | |
536 | ||
537 | input_sync(dev); | |
538 | } | |
539 | ||
1dc6edec JD |
540 | static void elantech_input_sync_v4(struct psmouse *psmouse) |
541 | { | |
542 | struct input_dev *dev = psmouse->dev; | |
cd9e83e2 | 543 | struct elantech_data *etd = psmouse->private; |
1dc6edec JD |
544 | unsigned char *packet = psmouse->packet; |
545 | ||
cd9e83e2 | 546 | /* For clickpads map both buttons to BTN_LEFT */ |
f0787592 | 547 | if (etd->info.fw_version & 0x001000) |
cd9e83e2 | 548 | input_report_key(dev, BTN_LEFT, packet[0] & 0x03); |
1ef85805 DT |
549 | else |
550 | psmouse_report_standard_buttons(dev, packet[0]); | |
cd9e83e2 | 551 | |
1dc6edec JD |
552 | input_mt_report_pointer_emulation(dev, true); |
553 | input_sync(dev); | |
554 | } | |
555 | ||
556 | static void process_packet_status_v4(struct psmouse *psmouse) | |
557 | { | |
558 | struct input_dev *dev = psmouse->dev; | |
559 | unsigned char *packet = psmouse->packet; | |
560 | unsigned fingers; | |
561 | int i; | |
562 | ||
563 | /* notify finger state change */ | |
564 | fingers = packet[1] & 0x1f; | |
565 | for (i = 0; i < ETP_MAX_FINGERS; i++) { | |
566 | if ((fingers & (1 << i)) == 0) { | |
567 | input_mt_slot(dev, i); | |
568 | input_mt_report_slot_state(dev, MT_TOOL_FINGER, false); | |
569 | } | |
570 | } | |
571 | ||
572 | elantech_input_sync_v4(psmouse); | |
573 | } | |
574 | ||
575 | static void process_packet_head_v4(struct psmouse *psmouse) | |
576 | { | |
577 | struct input_dev *dev = psmouse->dev; | |
578 | struct elantech_data *etd = psmouse->private; | |
579 | unsigned char *packet = psmouse->packet; | |
580 | int id = ((packet[3] & 0xe0) >> 5) - 1; | |
581 | int pres, traces; | |
582 | ||
583 | if (id < 0) | |
584 | return; | |
585 | ||
586 | etd->mt[id].x = ((packet[1] & 0x0f) << 8) | packet[2]; | |
587 | etd->mt[id].y = etd->y_max - (((packet[4] & 0x0f) << 8) | packet[5]); | |
588 | pres = (packet[1] & 0xf0) | ((packet[4] & 0xf0) >> 4); | |
589 | traces = (packet[0] & 0xf0) >> 4; | |
590 | ||
591 | input_mt_slot(dev, id); | |
592 | input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); | |
593 | ||
594 | input_report_abs(dev, ABS_MT_POSITION_X, etd->mt[id].x); | |
595 | input_report_abs(dev, ABS_MT_POSITION_Y, etd->mt[id].y); | |
596 | input_report_abs(dev, ABS_MT_PRESSURE, pres); | |
597 | input_report_abs(dev, ABS_MT_TOUCH_MAJOR, traces * etd->width); | |
598 | /* report this for backwards compatibility */ | |
599 | input_report_abs(dev, ABS_TOOL_WIDTH, traces); | |
600 | ||
601 | elantech_input_sync_v4(psmouse); | |
602 | } | |
603 | ||
604 | static void process_packet_motion_v4(struct psmouse *psmouse) | |
605 | { | |
606 | struct input_dev *dev = psmouse->dev; | |
607 | struct elantech_data *etd = psmouse->private; | |
608 | unsigned char *packet = psmouse->packet; | |
609 | int weight, delta_x1 = 0, delta_y1 = 0, delta_x2 = 0, delta_y2 = 0; | |
610 | int id, sid; | |
611 | ||
612 | id = ((packet[0] & 0xe0) >> 5) - 1; | |
613 | if (id < 0) | |
614 | return; | |
615 | ||
616 | sid = ((packet[3] & 0xe0) >> 5) - 1; | |
617 | weight = (packet[0] & 0x10) ? ETP_WEIGHT_VALUE : 1; | |
618 | /* | |
619 | * Motion packets give us the delta of x, y values of specific fingers, | |
620 | * but in two's complement. Let the compiler do the conversion for us. | |
621 | * Also _enlarge_ the numbers to int, in case of overflow. | |
622 | */ | |
623 | delta_x1 = (signed char)packet[1]; | |
624 | delta_y1 = (signed char)packet[2]; | |
625 | delta_x2 = (signed char)packet[4]; | |
626 | delta_y2 = (signed char)packet[5]; | |
627 | ||
628 | etd->mt[id].x += delta_x1 * weight; | |
629 | etd->mt[id].y -= delta_y1 * weight; | |
630 | input_mt_slot(dev, id); | |
631 | input_report_abs(dev, ABS_MT_POSITION_X, etd->mt[id].x); | |
632 | input_report_abs(dev, ABS_MT_POSITION_Y, etd->mt[id].y); | |
633 | ||
634 | if (sid >= 0) { | |
635 | etd->mt[sid].x += delta_x2 * weight; | |
636 | etd->mt[sid].y -= delta_y2 * weight; | |
637 | input_mt_slot(dev, sid); | |
638 | input_report_abs(dev, ABS_MT_POSITION_X, etd->mt[sid].x); | |
639 | input_report_abs(dev, ABS_MT_POSITION_Y, etd->mt[sid].y); | |
640 | } | |
641 | ||
642 | elantech_input_sync_v4(psmouse); | |
643 | } | |
644 | ||
645 | static void elantech_report_absolute_v4(struct psmouse *psmouse, | |
646 | int packet_type) | |
647 | { | |
648 | switch (packet_type) { | |
649 | case PACKET_V4_STATUS: | |
650 | process_packet_status_v4(psmouse); | |
651 | break; | |
652 | ||
653 | case PACKET_V4_HEAD: | |
654 | process_packet_head_v4(psmouse); | |
655 | break; | |
656 | ||
657 | case PACKET_V4_MOTION: | |
658 | process_packet_motion_v4(psmouse); | |
659 | break; | |
660 | ||
661 | case PACKET_UNKNOWN: | |
662 | default: | |
663 | /* impossible to get here */ | |
664 | break; | |
665 | } | |
666 | } | |
667 | ||
7894f21b | 668 | static int elantech_packet_check_v1(struct psmouse *psmouse) |
2a0bd75e AO |
669 | { |
670 | struct elantech_data *etd = psmouse->private; | |
671 | unsigned char *packet = psmouse->packet; | |
672 | unsigned char p1, p2, p3; | |
673 | ||
674 | /* Parity bits are placed differently */ | |
f0787592 | 675 | if (etd->info.fw_version < 0x020000) { |
2a0bd75e AO |
676 | /* byte 0: D U p1 p2 1 p3 R L */ |
677 | p1 = (packet[0] & 0x20) >> 5; | |
678 | p2 = (packet[0] & 0x10) >> 4; | |
679 | } else { | |
680 | /* byte 0: n1 n0 p2 p1 1 p3 R L */ | |
681 | p1 = (packet[0] & 0x10) >> 4; | |
682 | p2 = (packet[0] & 0x20) >> 5; | |
683 | } | |
684 | ||
685 | p3 = (packet[0] & 0x04) >> 2; | |
686 | ||
687 | return etd->parity[packet[1]] == p1 && | |
688 | etd->parity[packet[2]] == p2 && | |
689 | etd->parity[packet[3]] == p3; | |
690 | } | |
691 | ||
84a90b61 JD |
692 | static int elantech_debounce_check_v2(struct psmouse *psmouse) |
693 | { | |
694 | /* | |
695 | * When we encounter packet that matches this exactly, it means the | |
696 | * hardware is in debounce status. Just ignore the whole packet. | |
697 | */ | |
4f1b461d CIK |
698 | static const u8 debounce_packet[] = { |
699 | 0x84, 0xff, 0xff, 0x02, 0xff, 0xff | |
700 | }; | |
84a90b61 JD |
701 | unsigned char *packet = psmouse->packet; |
702 | ||
703 | return !memcmp(packet, debounce_packet, sizeof(debounce_packet)); | |
704 | } | |
705 | ||
7894f21b JD |
706 | static int elantech_packet_check_v2(struct psmouse *psmouse) |
707 | { | |
708 | struct elantech_data *etd = psmouse->private; | |
709 | unsigned char *packet = psmouse->packet; | |
710 | ||
711 | /* | |
712 | * V2 hardware has two flavors. Older ones that do not report pressure, | |
713 | * and newer ones that reports pressure and width. With newer ones, all | |
714 | * packets (1, 2, 3 finger touch) have the same constant bits. With | |
715 | * older ones, 1/3 finger touch packets and 2 finger touch packets | |
716 | * have different constant bits. | |
717 | * With all three cases, if the constant bits are not exactly what I | |
718 | * expected, I consider them invalid. | |
719 | */ | |
f0787592 | 720 | if (etd->info.reports_pressure) |
7894f21b JD |
721 | return (packet[0] & 0x0c) == 0x04 && |
722 | (packet[3] & 0x0f) == 0x02; | |
723 | ||
724 | if ((packet[0] & 0xc0) == 0x80) | |
725 | return (packet[0] & 0x0c) == 0x0c && | |
726 | (packet[3] & 0x0e) == 0x08; | |
727 | ||
728 | return (packet[0] & 0x3c) == 0x3c && | |
729 | (packet[1] & 0xf0) == 0x00 && | |
730 | (packet[3] & 0x3e) == 0x38 && | |
731 | (packet[4] & 0xf0) == 0x00; | |
732 | } | |
733 | ||
28f49616 JD |
734 | /* |
735 | * We check the constant bits to determine what packet type we get, | |
1dc6edec | 736 | * so packet checking is mandatory for v3 and later hardware. |
28f49616 JD |
737 | */ |
738 | static int elantech_packet_check_v3(struct psmouse *psmouse) | |
739 | { | |
acc0444b | 740 | struct elantech_data *etd = psmouse->private; |
4f1b461d CIK |
741 | static const u8 debounce_packet[] = { |
742 | 0xc4, 0xff, 0xff, 0x02, 0xff, 0xff | |
743 | }; | |
28f49616 JD |
744 | unsigned char *packet = psmouse->packet; |
745 | ||
746 | /* | |
747 | * check debounce first, it has the same signature in byte 0 | |
748 | * and byte 3 as PACKET_V3_HEAD. | |
749 | */ | |
750 | if (!memcmp(packet, debounce_packet, sizeof(debounce_packet))) | |
751 | return PACKET_DEBOUNCE; | |
752 | ||
acc0444b MD |
753 | /* |
754 | * If the hardware flag 'crc_enabled' is set the packets have | |
755 | * different signatures. | |
756 | */ | |
f0787592 | 757 | if (etd->info.crc_enabled) { |
acc0444b MD |
758 | if ((packet[3] & 0x09) == 0x08) |
759 | return PACKET_V3_HEAD; | |
760 | ||
761 | if ((packet[3] & 0x09) == 0x09) | |
762 | return PACKET_V3_TAIL; | |
763 | } else { | |
764 | if ((packet[0] & 0x0c) == 0x04 && (packet[3] & 0xcf) == 0x02) | |
765 | return PACKET_V3_HEAD; | |
28f49616 | 766 | |
acc0444b MD |
767 | if ((packet[0] & 0x0c) == 0x0c && (packet[3] & 0xce) == 0x0c) |
768 | return PACKET_V3_TAIL; | |
a2418fc4 UDB |
769 | if ((packet[3] & 0x0f) == 0x06) |
770 | return PACKET_TRACKPOINT; | |
acc0444b | 771 | } |
28f49616 JD |
772 | |
773 | return PACKET_UNKNOWN; | |
774 | } | |
775 | ||
1dc6edec JD |
776 | static int elantech_packet_check_v4(struct psmouse *psmouse) |
777 | { | |
acc0444b | 778 | struct elantech_data *etd = psmouse->private; |
1dc6edec | 779 | unsigned char *packet = psmouse->packet; |
9eebed7d | 780 | unsigned char packet_type = packet[3] & 0x03; |
6b30c73e | 781 | unsigned int ic_version; |
acc0444b MD |
782 | bool sanity_check; |
783 | ||
d0ab5478 | 784 | if (etd->tp_dev && (packet[3] & 0x0f) == 0x06) |
caeb0d37 UDB |
785 | return PACKET_TRACKPOINT; |
786 | ||
6b30c73e | 787 | /* This represents the version of IC body. */ |
f0787592 | 788 | ic_version = (etd->info.fw_version & 0x0f0000) >> 16; |
6b30c73e | 789 | |
acc0444b MD |
790 | /* |
791 | * Sanity check based on the constant bits of a packet. | |
792 | * The constant bits change depending on the value of | |
6b30c73e DL |
793 | * the hardware flag 'crc_enabled' and the version of |
794 | * the IC body, but are the same for every packet, | |
795 | * regardless of the type. | |
acc0444b | 796 | */ |
f0787592 | 797 | if (etd->info.crc_enabled) |
acc0444b | 798 | sanity_check = ((packet[3] & 0x08) == 0x00); |
f0787592 | 799 | else if (ic_version == 7 && etd->info.samples[1] == 0x2A) |
6b30c73e | 800 | sanity_check = ((packet[3] & 0x1c) == 0x10); |
acc0444b MD |
801 | else |
802 | sanity_check = ((packet[0] & 0x0c) == 0x04 && | |
803 | (packet[3] & 0x1c) == 0x10); | |
804 | ||
805 | if (!sanity_check) | |
806 | return PACKET_UNKNOWN; | |
1dc6edec | 807 | |
9eebed7d MD |
808 | switch (packet_type) { |
809 | case 0: | |
810 | return PACKET_V4_STATUS; | |
811 | ||
812 | case 1: | |
1dc6edec JD |
813 | return PACKET_V4_HEAD; |
814 | ||
9eebed7d | 815 | case 2: |
1dc6edec | 816 | return PACKET_V4_MOTION; |
9eebed7d | 817 | } |
1dc6edec JD |
818 | |
819 | return PACKET_UNKNOWN; | |
820 | } | |
821 | ||
2a0bd75e AO |
822 | /* |
823 | * Process byte stream from mouse and handle complete packets | |
824 | */ | |
825 | static psmouse_ret_t elantech_process_byte(struct psmouse *psmouse) | |
826 | { | |
827 | struct elantech_data *etd = psmouse->private; | |
28f49616 | 828 | int packet_type; |
2a0bd75e AO |
829 | |
830 | if (psmouse->pktcnt < psmouse->pktsize) | |
831 | return PSMOUSE_GOOD_DATA; | |
832 | ||
f0787592 | 833 | if (etd->info.debug > 1) |
b5d21704 | 834 | elantech_packet_dump(psmouse); |
2a0bd75e | 835 | |
f0787592 | 836 | switch (etd->info.hw_version) { |
2a0bd75e | 837 | case 1: |
f0787592 | 838 | if (etd->info.paritycheck && !elantech_packet_check_v1(psmouse)) |
2a0bd75e AO |
839 | return PSMOUSE_BAD_DATA; |
840 | ||
841 | elantech_report_absolute_v1(psmouse); | |
842 | break; | |
843 | ||
844 | case 2: | |
84a90b61 JD |
845 | /* ignore debounce */ |
846 | if (elantech_debounce_check_v2(psmouse)) | |
847 | return PSMOUSE_FULL_PACKET; | |
848 | ||
f0787592 | 849 | if (etd->info.paritycheck && !elantech_packet_check_v2(psmouse)) |
7894f21b JD |
850 | return PSMOUSE_BAD_DATA; |
851 | ||
2a0bd75e AO |
852 | elantech_report_absolute_v2(psmouse); |
853 | break; | |
28f49616 JD |
854 | |
855 | case 3: | |
856 | packet_type = elantech_packet_check_v3(psmouse); | |
a2418fc4 UDB |
857 | switch (packet_type) { |
858 | case PACKET_UNKNOWN: | |
28f49616 JD |
859 | return PSMOUSE_BAD_DATA; |
860 | ||
a2418fc4 UDB |
861 | case PACKET_DEBOUNCE: |
862 | /* ignore debounce */ | |
863 | break; | |
864 | ||
865 | case PACKET_TRACKPOINT: | |
866 | elantech_report_trackpoint(psmouse, packet_type); | |
867 | break; | |
868 | ||
869 | default: | |
870 | elantech_report_absolute_v3(psmouse, packet_type); | |
871 | break; | |
872 | } | |
873 | ||
28f49616 | 874 | break; |
1dc6edec JD |
875 | |
876 | case 4: | |
877 | packet_type = elantech_packet_check_v4(psmouse); | |
caeb0d37 UDB |
878 | switch (packet_type) { |
879 | case PACKET_UNKNOWN: | |
1dc6edec JD |
880 | return PSMOUSE_BAD_DATA; |
881 | ||
caeb0d37 UDB |
882 | case PACKET_TRACKPOINT: |
883 | elantech_report_trackpoint(psmouse, packet_type); | |
884 | break; | |
885 | ||
886 | default: | |
887 | elantech_report_absolute_v4(psmouse, packet_type); | |
888 | break; | |
889 | } | |
890 | ||
1dc6edec | 891 | break; |
2a0bd75e AO |
892 | } |
893 | ||
894 | return PSMOUSE_FULL_PACKET; | |
895 | } | |
896 | ||
bd884149 UDB |
897 | /* |
898 | * This writes the reg_07 value again to the hardware at the end of every | |
899 | * set_rate call because the register loses its value. reg_07 allows setting | |
900 | * absolute mode on v4 hardware | |
901 | */ | |
902 | static void elantech_set_rate_restore_reg_07(struct psmouse *psmouse, | |
903 | unsigned int rate) | |
904 | { | |
905 | struct elantech_data *etd = psmouse->private; | |
906 | ||
907 | etd->original_set_rate(psmouse, rate); | |
908 | if (elantech_write_reg(psmouse, 0x07, etd->reg_07)) | |
909 | psmouse_err(psmouse, "restoring reg_07 failed\n"); | |
910 | } | |
911 | ||
2a0bd75e AO |
912 | /* |
913 | * Put the touchpad into absolute mode | |
914 | */ | |
915 | static int elantech_set_absolute_mode(struct psmouse *psmouse) | |
916 | { | |
917 | struct elantech_data *etd = psmouse->private; | |
918 | unsigned char val; | |
919 | int tries = ETP_READ_BACK_TRIES; | |
920 | int rc = 0; | |
921 | ||
f0787592 | 922 | switch (etd->info.hw_version) { |
2a0bd75e AO |
923 | case 1: |
924 | etd->reg_10 = 0x16; | |
925 | etd->reg_11 = 0x8f; | |
926 | if (elantech_write_reg(psmouse, 0x10, etd->reg_10) || | |
927 | elantech_write_reg(psmouse, 0x11, etd->reg_11)) { | |
928 | rc = -1; | |
929 | } | |
930 | break; | |
931 | ||
932 | case 2: | |
933 | /* Windows driver values */ | |
934 | etd->reg_10 = 0x54; | |
935 | etd->reg_11 = 0x88; /* 0x8a */ | |
936 | etd->reg_21 = 0x60; /* 0x00 */ | |
937 | if (elantech_write_reg(psmouse, 0x10, etd->reg_10) || | |
938 | elantech_write_reg(psmouse, 0x11, etd->reg_11) || | |
939 | elantech_write_reg(psmouse, 0x21, etd->reg_21)) { | |
940 | rc = -1; | |
2a0bd75e | 941 | } |
28f49616 JD |
942 | break; |
943 | ||
944 | case 3: | |
f0787592 | 945 | if (etd->info.set_hw_resolution) |
36189cc3 HG |
946 | etd->reg_10 = 0x0b; |
947 | else | |
fb4f8f56 | 948 | etd->reg_10 = 0x01; |
36189cc3 | 949 | |
28f49616 JD |
950 | if (elantech_write_reg(psmouse, 0x10, etd->reg_10)) |
951 | rc = -1; | |
952 | ||
953 | break; | |
1dc6edec JD |
954 | |
955 | case 4: | |
956 | etd->reg_07 = 0x01; | |
957 | if (elantech_write_reg(psmouse, 0x07, etd->reg_07)) | |
958 | rc = -1; | |
959 | ||
960 | goto skip_readback_reg_10; /* v4 has no reg 0x10 to read */ | |
b2546df6 AO |
961 | } |
962 | ||
963 | if (rc == 0) { | |
2a0bd75e | 964 | /* |
b2546df6 AO |
965 | * Read back reg 0x10. For hardware version 1 we must make |
966 | * sure the absolute mode bit is set. For hardware version 2 | |
b5d21704 | 967 | * the touchpad is probably initializing and not ready until |
b2546df6 | 968 | * we read back the value we just wrote. |
2a0bd75e AO |
969 | */ |
970 | do { | |
971 | rc = elantech_read_reg(psmouse, 0x10, &val); | |
972 | if (rc == 0) | |
973 | break; | |
974 | tries--; | |
d4ae84a8 | 975 | elantech_debug("retrying read (%d).\n", tries); |
2a0bd75e AO |
976 | msleep(ETP_READ_BACK_DELAY); |
977 | } while (tries > 0); | |
b2546df6 AO |
978 | |
979 | if (rc) { | |
b5d21704 DT |
980 | psmouse_err(psmouse, |
981 | "failed to read back register 0x10.\n"); | |
f0787592 | 982 | } else if (etd->info.hw_version == 1 && |
b2546df6 | 983 | !(val & ETP_R10_ABSOLUTE_MODE)) { |
b5d21704 DT |
984 | psmouse_err(psmouse, |
985 | "touchpad refuses to switch to absolute mode.\n"); | |
b2546df6 AO |
986 | rc = -1; |
987 | } | |
2a0bd75e AO |
988 | } |
989 | ||
1dc6edec | 990 | skip_readback_reg_10: |
2a0bd75e | 991 | if (rc) |
b5d21704 | 992 | psmouse_err(psmouse, "failed to initialise registers.\n"); |
2a0bd75e AO |
993 | |
994 | return rc; | |
995 | } | |
996 | ||
28f49616 JD |
997 | static int elantech_set_range(struct psmouse *psmouse, |
998 | unsigned int *x_min, unsigned int *y_min, | |
1dc6edec JD |
999 | unsigned int *x_max, unsigned int *y_max, |
1000 | unsigned int *width) | |
230282a7 JD |
1001 | { |
1002 | struct elantech_data *etd = psmouse->private; | |
f0787592 | 1003 | struct elantech_device_info *info = &etd->info; |
28f49616 | 1004 | unsigned char param[3]; |
1dc6edec | 1005 | unsigned char traces; |
230282a7 | 1006 | |
f0787592 | 1007 | switch (info->hw_version) { |
230282a7 JD |
1008 | case 1: |
1009 | *x_min = ETP_XMIN_V1; | |
1010 | *y_min = ETP_YMIN_V1; | |
1011 | *x_max = ETP_XMAX_V1; | |
1012 | *y_max = ETP_YMAX_V1; | |
1013 | break; | |
1014 | ||
1015 | case 2: | |
f0787592 BT |
1016 | if (info->fw_version == 0x020800 || |
1017 | info->fw_version == 0x020b00 || | |
1018 | info->fw_version == 0x020030) { | |
230282a7 JD |
1019 | *x_min = ETP_XMIN_V2; |
1020 | *y_min = ETP_YMIN_V2; | |
1021 | *x_max = ETP_XMAX_V2; | |
1022 | *y_max = ETP_YMAX_V2; | |
1023 | } else { | |
84a90b61 JD |
1024 | int i; |
1025 | int fixed_dpi; | |
1026 | ||
f0787592 BT |
1027 | i = (info->fw_version > 0x020800 && |
1028 | info->fw_version < 0x020900) ? 1 : 2; | |
84a90b61 | 1029 | |
f0787592 | 1030 | if (info->send_cmd(psmouse, ETP_FW_ID_QUERY, param)) |
84a90b61 JD |
1031 | return -1; |
1032 | ||
1033 | fixed_dpi = param[1] & 0x10; | |
1034 | ||
f0787592 BT |
1035 | if (((info->fw_version >> 16) == 0x14) && fixed_dpi) { |
1036 | if (info->send_cmd(psmouse, ETP_SAMPLE_QUERY, param)) | |
84a90b61 JD |
1037 | return -1; |
1038 | ||
f0787592 BT |
1039 | *x_max = (info->capabilities[1] - i) * param[1] / 2; |
1040 | *y_max = (info->capabilities[2] - i) * param[2] / 2; | |
1041 | } else if (info->fw_version == 0x040216) { | |
84a90b61 JD |
1042 | *x_max = 819; |
1043 | *y_max = 405; | |
f0787592 | 1044 | } else if (info->fw_version == 0x040219 || info->fw_version == 0x040215) { |
84a90b61 JD |
1045 | *x_max = 900; |
1046 | *y_max = 500; | |
1047 | } else { | |
f0787592 BT |
1048 | *x_max = (info->capabilities[1] - i) * 64; |
1049 | *y_max = (info->capabilities[2] - i) * 64; | |
84a90b61 | 1050 | } |
230282a7 JD |
1051 | } |
1052 | break; | |
28f49616 JD |
1053 | |
1054 | case 3: | |
f0787592 | 1055 | if (info->send_cmd(psmouse, ETP_FW_ID_QUERY, param)) |
28f49616 JD |
1056 | return -1; |
1057 | ||
1058 | *x_max = (0x0f & param[0]) << 8 | param[1]; | |
1059 | *y_max = (0xf0 & param[0]) << 4 | param[2]; | |
1060 | break; | |
1dc6edec JD |
1061 | |
1062 | case 4: | |
f0787592 | 1063 | if (info->send_cmd(psmouse, ETP_FW_ID_QUERY, param)) |
1dc6edec JD |
1064 | return -1; |
1065 | ||
1066 | *x_max = (0x0f & param[0]) << 8 | param[1]; | |
1067 | *y_max = (0xf0 & param[0]) << 4 | param[2]; | |
f0787592 | 1068 | traces = info->capabilities[1]; |
1dc6edec JD |
1069 | if ((traces < 2) || (traces > *x_max)) |
1070 | return -1; | |
1071 | ||
1072 | *width = *x_max / (traces - 1); | |
1073 | break; | |
230282a7 | 1074 | } |
28f49616 JD |
1075 | |
1076 | return 0; | |
230282a7 JD |
1077 | } |
1078 | ||
3d95fd6a JD |
1079 | /* |
1080 | * (value from firmware) * 10 + 790 = dpi | |
1081 | * we also have to convert dpi to dots/mm (*10/254 to avoid floating point) | |
1082 | */ | |
1083 | static unsigned int elantech_convert_res(unsigned int val) | |
1084 | { | |
1085 | return (val * 10 + 790) * 10 / 254; | |
1086 | } | |
1087 | ||
1088 | static int elantech_get_resolution_v4(struct psmouse *psmouse, | |
1089 | unsigned int *x_res, | |
21c48dbd BT |
1090 | unsigned int *y_res, |
1091 | unsigned int *bus) | |
3d95fd6a JD |
1092 | { |
1093 | unsigned char param[3]; | |
1094 | ||
1095 | if (elantech_send_cmd(psmouse, ETP_RESOLUTION_QUERY, param)) | |
1096 | return -1; | |
1097 | ||
1098 | *x_res = elantech_convert_res(param[1] & 0x0f); | |
1099 | *y_res = elantech_convert_res((param[1] & 0xf0) >> 4); | |
21c48dbd | 1100 | *bus = param[2]; |
3d95fd6a JD |
1101 | |
1102 | return 0; | |
1103 | } | |
1104 | ||
c15bdfd5 HG |
1105 | /* |
1106 | * Advertise INPUT_PROP_BUTTONPAD for clickpads. The testing of bit 12 in | |
1107 | * fw_version for this is based on the following fw_version & caps table: | |
1108 | * | |
1109 | * Laptop-model: fw_version: caps: buttons: | |
1110 | * Acer S3 0x461f00 10, 13, 0e clickpad | |
1111 | * Acer S7-392 0x581f01 50, 17, 0d clickpad | |
1112 | * Acer V5-131 0x461f02 01, 16, 0c clickpad | |
1113 | * Acer V5-551 0x461f00 ? clickpad | |
1114 | * Asus K53SV 0x450f01 78, 15, 0c 2 hw buttons | |
1115 | * Asus G46VW 0x460f02 00, 18, 0c 2 hw buttons | |
1116 | * Asus G750JX 0x360f00 00, 16, 0c 2 hw buttons | |
bd884149 UDB |
1117 | * Asus TP500LN 0x381f17 10, 14, 0e clickpad |
1118 | * Asus X750JN 0x381f17 10, 14, 0e clickpad | |
c15bdfd5 HG |
1119 | * Asus UX31 0x361f00 20, 15, 0e clickpad |
1120 | * Asus UX32VD 0x361f02 00, 15, 0e clickpad | |
1121 | * Avatar AVIU-145A2 0x361f00 ? clickpad | |
47c1ffb2 | 1122 | * Fujitsu LIFEBOOK E544 0x470f00 d0, 12, 09 2 hw buttons |
47eb0c8b | 1123 | * Fujitsu LIFEBOOK E546 0x470f00 50, 12, 09 2 hw buttons |
704de489 | 1124 | * Fujitsu LIFEBOOK E547 0x470f00 50, 12, 09 2 hw buttons |
47c1ffb2 | 1125 | * Fujitsu LIFEBOOK E554 0x570f01 40, 14, 0c 2 hw buttons |
47eb0c8b | 1126 | * Fujitsu LIFEBOOK E557 0x570f01 40, 14, 0c 2 hw buttons |
6b30c73e | 1127 | * Fujitsu T725 0x470f01 05, 12, 09 2 hw buttons |
a2418fc4 | 1128 | * Fujitsu H730 0x570f00 c0, 14, 0c 3 hw buttons (**) |
c15bdfd5 HG |
1129 | * Gigabyte U2442 0x450f01 58, 17, 0c 2 hw buttons |
1130 | * Lenovo L430 0x350f02 b9, 15, 0c 2 hw buttons (*) | |
a2418fc4 | 1131 | * Lenovo L530 0x350f02 b9, 15, 0c 2 hw buttons (*) |
c15bdfd5 HG |
1132 | * Samsung NF210 0x150b00 78, 14, 0a 2 hw buttons |
1133 | * Samsung NP770Z5E 0x575f01 10, 15, 0f clickpad | |
1134 | * Samsung NP700Z5B 0x361f06 21, 15, 0f clickpad | |
1135 | * Samsung NP900X3E-A02 0x575f03 ? clickpad | |
1136 | * Samsung NP-QX410 0x851b00 19, 14, 0c clickpad | |
1137 | * Samsung RC512 0x450f00 08, 15, 0c 2 hw buttons | |
1138 | * Samsung RF710 0x450f00 ? 2 hw buttons | |
1139 | * System76 Pangolin 0x250f01 ? 2 hw buttons | |
1140 | * (*) + 3 trackpoint buttons | |
a2418fc4 | 1141 | * (**) + 0 trackpoint buttons |
ad3cce06 | 1142 | * Note: Lenovo L430 and Lenovo L530 have the same fw_version/caps |
c15bdfd5 HG |
1143 | */ |
1144 | static void elantech_set_buttonpad_prop(struct psmouse *psmouse) | |
1145 | { | |
1146 | struct input_dev *dev = psmouse->dev; | |
1147 | struct elantech_data *etd = psmouse->private; | |
1148 | ||
f0787592 | 1149 | if (etd->info.fw_version & 0x001000) { |
c15bdfd5 HG |
1150 | __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); |
1151 | __clear_bit(BTN_RIGHT, dev->keybit); | |
1152 | } | |
1153 | } | |
1154 | ||
f386474e UDB |
1155 | /* |
1156 | * Some hw_version 4 models do have a middle button | |
1157 | */ | |
1158 | static const struct dmi_system_id elantech_dmi_has_middle_button[] = { | |
1159 | #if defined(CONFIG_DMI) && defined(CONFIG_X86) | |
1160 | { | |
1161 | /* Fujitsu H730 has a middle button */ | |
1162 | .matches = { | |
1163 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
1164 | DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H730"), | |
1165 | }, | |
1166 | }, | |
f9a703a5 MK |
1167 | { |
1168 | /* Fujitsu H760 also has a middle button */ | |
1169 | .matches = { | |
1170 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
1171 | DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H760"), | |
1172 | }, | |
1173 | }, | |
f386474e UDB |
1174 | #endif |
1175 | { } | |
1176 | }; | |
1177 | ||
24bb555e AM |
1178 | static const char * const middle_button_pnp_ids[] = { |
1179 | "LEN2131", /* ThinkPad P52 w/ NFC */ | |
1180 | "LEN2132", /* ThinkPad P52 */ | |
1181 | NULL | |
1182 | }; | |
1183 | ||
2a0bd75e AO |
1184 | /* |
1185 | * Set the appropriate event bits for the input subsystem | |
1186 | */ | |
28f49616 | 1187 | static int elantech_set_input_params(struct psmouse *psmouse) |
2a0bd75e AO |
1188 | { |
1189 | struct input_dev *dev = psmouse->dev; | |
1190 | struct elantech_data *etd = psmouse->private; | |
f0787592 | 1191 | struct elantech_device_info *info = &etd->info; |
1dc6edec | 1192 | unsigned int x_min = 0, y_min = 0, x_max = 0, y_max = 0, width = 0; |
230282a7 | 1193 | |
1dc6edec | 1194 | if (elantech_set_range(psmouse, &x_min, &y_min, &x_max, &y_max, &width)) |
28f49616 | 1195 | return -1; |
2a0bd75e | 1196 | |
e3dde4fb | 1197 | __set_bit(INPUT_PROP_POINTER, dev->propbit); |
2a0bd75e AO |
1198 | __set_bit(EV_KEY, dev->evbit); |
1199 | __set_bit(EV_ABS, dev->evbit); | |
c7a1f3cc | 1200 | __clear_bit(EV_REL, dev->evbit); |
2a0bd75e AO |
1201 | |
1202 | __set_bit(BTN_LEFT, dev->keybit); | |
24bb555e AM |
1203 | if (dmi_check_system(elantech_dmi_has_middle_button) || |
1204 | psmouse_matches_pnp_id(psmouse, middle_button_pnp_ids)) | |
f386474e | 1205 | __set_bit(BTN_MIDDLE, dev->keybit); |
2a0bd75e AO |
1206 | __set_bit(BTN_RIGHT, dev->keybit); |
1207 | ||
1208 | __set_bit(BTN_TOUCH, dev->keybit); | |
1209 | __set_bit(BTN_TOOL_FINGER, dev->keybit); | |
1210 | __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); | |
1211 | __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit); | |
1212 | ||
f0787592 | 1213 | switch (info->hw_version) { |
2a0bd75e AO |
1214 | case 1: |
1215 | /* Rocker button */ | |
f0787592 BT |
1216 | if (info->fw_version < 0x020000 && |
1217 | (info->capabilities[0] & ETP_CAP_HAS_ROCKER)) { | |
2a0bd75e AO |
1218 | __set_bit(BTN_FORWARD, dev->keybit); |
1219 | __set_bit(BTN_BACK, dev->keybit); | |
1220 | } | |
230282a7 JD |
1221 | input_set_abs_params(dev, ABS_X, x_min, x_max, 0, 0); |
1222 | input_set_abs_params(dev, ABS_Y, y_min, y_max, 0, 0); | |
2a0bd75e AO |
1223 | break; |
1224 | ||
1225 | case 2: | |
22462d9f | 1226 | __set_bit(BTN_TOOL_QUADTAP, dev->keybit); |
28f49616 JD |
1227 | __set_bit(INPUT_PROP_SEMI_MT, dev->propbit); |
1228 | /* fall through */ | |
1229 | case 3: | |
f0787592 | 1230 | if (info->hw_version == 3) |
c15bdfd5 | 1231 | elantech_set_buttonpad_prop(psmouse); |
230282a7 JD |
1232 | input_set_abs_params(dev, ABS_X, x_min, x_max, 0, 0); |
1233 | input_set_abs_params(dev, ABS_Y, y_min, y_max, 0, 0); | |
f0787592 | 1234 | if (info->reports_pressure) { |
f941c705 ÉP |
1235 | input_set_abs_params(dev, ABS_PRESSURE, ETP_PMIN_V2, |
1236 | ETP_PMAX_V2, 0, 0); | |
1237 | input_set_abs_params(dev, ABS_TOOL_WIDTH, ETP_WMIN_V2, | |
1238 | ETP_WMAX_V2, 0, 0); | |
1239 | } | |
6544a1df | 1240 | input_mt_init_slots(dev, 2, INPUT_MT_SEMI_MT); |
230282a7 JD |
1241 | input_set_abs_params(dev, ABS_MT_POSITION_X, x_min, x_max, 0, 0); |
1242 | input_set_abs_params(dev, ABS_MT_POSITION_Y, y_min, y_max, 0, 0); | |
2a0bd75e | 1243 | break; |
1dc6edec JD |
1244 | |
1245 | case 4: | |
c15bdfd5 | 1246 | elantech_set_buttonpad_prop(psmouse); |
1dc6edec JD |
1247 | __set_bit(BTN_TOOL_QUADTAP, dev->keybit); |
1248 | /* For X to recognize me as touchpad. */ | |
1249 | input_set_abs_params(dev, ABS_X, x_min, x_max, 0, 0); | |
1250 | input_set_abs_params(dev, ABS_Y, y_min, y_max, 0, 0); | |
1251 | /* | |
1252 | * range of pressure and width is the same as v2, | |
1253 | * report ABS_PRESSURE, ABS_TOOL_WIDTH for compatibility. | |
1254 | */ | |
1255 | input_set_abs_params(dev, ABS_PRESSURE, ETP_PMIN_V2, | |
1256 | ETP_PMAX_V2, 0, 0); | |
1257 | input_set_abs_params(dev, ABS_TOOL_WIDTH, ETP_WMIN_V2, | |
1258 | ETP_WMAX_V2, 0, 0); | |
1259 | /* Multitouch capable pad, up to 5 fingers. */ | |
b4adbbef | 1260 | input_mt_init_slots(dev, ETP_MAX_FINGERS, 0); |
1dc6edec JD |
1261 | input_set_abs_params(dev, ABS_MT_POSITION_X, x_min, x_max, 0, 0); |
1262 | input_set_abs_params(dev, ABS_MT_POSITION_Y, y_min, y_max, 0, 0); | |
1263 | input_set_abs_params(dev, ABS_MT_PRESSURE, ETP_PMIN_V2, | |
1264 | ETP_PMAX_V2, 0, 0); | |
1265 | /* | |
1266 | * The firmware reports how many trace lines the finger spans, | |
1267 | * convert to surface unit as Protocol-B requires. | |
1268 | */ | |
1269 | input_set_abs_params(dev, ABS_MT_TOUCH_MAJOR, 0, | |
1270 | ETP_WMAX_V2 * width, 0, 0); | |
1271 | break; | |
2a0bd75e | 1272 | } |
230282a7 | 1273 | |
80212ed7 BT |
1274 | input_abs_set_res(dev, ABS_X, info->x_res); |
1275 | input_abs_set_res(dev, ABS_Y, info->y_res); | |
f0787592 | 1276 | if (info->hw_version > 1) { |
80212ed7 BT |
1277 | input_abs_set_res(dev, ABS_MT_POSITION_X, info->x_res); |
1278 | input_abs_set_res(dev, ABS_MT_POSITION_Y, info->y_res); | |
d98399e6 PH |
1279 | } |
1280 | ||
230282a7 | 1281 | etd->y_max = y_max; |
1dc6edec | 1282 | etd->width = width; |
28f49616 JD |
1283 | |
1284 | return 0; | |
2a0bd75e AO |
1285 | } |
1286 | ||
1287 | struct elantech_attr_data { | |
1288 | size_t field_offset; | |
1289 | unsigned char reg; | |
1290 | }; | |
1291 | ||
1292 | /* | |
1293 | * Display a register value by reading a sysfs entry | |
1294 | */ | |
1295 | static ssize_t elantech_show_int_attr(struct psmouse *psmouse, void *data, | |
1296 | char *buf) | |
1297 | { | |
1298 | struct elantech_data *etd = psmouse->private; | |
1299 | struct elantech_attr_data *attr = data; | |
1300 | unsigned char *reg = (unsigned char *) etd + attr->field_offset; | |
1301 | int rc = 0; | |
1302 | ||
1303 | if (attr->reg) | |
1304 | rc = elantech_read_reg(psmouse, attr->reg, reg); | |
1305 | ||
1306 | return sprintf(buf, "0x%02x\n", (attr->reg && rc) ? -1 : *reg); | |
1307 | } | |
1308 | ||
1309 | /* | |
1310 | * Write a register value by writing a sysfs entry | |
1311 | */ | |
1312 | static ssize_t elantech_set_int_attr(struct psmouse *psmouse, | |
1313 | void *data, const char *buf, size_t count) | |
1314 | { | |
1315 | struct elantech_data *etd = psmouse->private; | |
1316 | struct elantech_attr_data *attr = data; | |
1317 | unsigned char *reg = (unsigned char *) etd + attr->field_offset; | |
76496e7a | 1318 | unsigned char value; |
2a0bd75e AO |
1319 | int err; |
1320 | ||
76496e7a | 1321 | err = kstrtou8(buf, 16, &value); |
2a0bd75e AO |
1322 | if (err) |
1323 | return err; | |
1324 | ||
2a0bd75e | 1325 | /* Do we need to preserve some bits for version 2 hardware too? */ |
f0787592 | 1326 | if (etd->info.hw_version == 1) { |
2a0bd75e AO |
1327 | if (attr->reg == 0x10) |
1328 | /* Force absolute mode always on */ | |
1329 | value |= ETP_R10_ABSOLUTE_MODE; | |
1330 | else if (attr->reg == 0x11) | |
1331 | /* Force 4 byte mode always on */ | |
1332 | value |= ETP_R11_4_BYTE_MODE; | |
1333 | } | |
1334 | ||
1335 | if (!attr->reg || elantech_write_reg(psmouse, attr->reg, value) == 0) | |
1336 | *reg = value; | |
1337 | ||
1338 | return count; | |
1339 | } | |
1340 | ||
1341 | #define ELANTECH_INT_ATTR(_name, _register) \ | |
1342 | static struct elantech_attr_data elantech_attr_##_name = { \ | |
1343 | .field_offset = offsetof(struct elantech_data, _name), \ | |
1344 | .reg = _register, \ | |
1345 | }; \ | |
f0787592 | 1346 | PSMOUSE_DEFINE_ATTR(_name, 0644, \ |
2a0bd75e AO |
1347 | &elantech_attr_##_name, \ |
1348 | elantech_show_int_attr, \ | |
1349 | elantech_set_int_attr) | |
1350 | ||
f0787592 BT |
1351 | #define ELANTECH_INFO_ATTR(_name) \ |
1352 | static struct elantech_attr_data elantech_attr_##_name = { \ | |
1353 | .field_offset = offsetof(struct elantech_data, info) + \ | |
1354 | offsetof(struct elantech_device_info, _name), \ | |
1355 | .reg = 0, \ | |
1356 | }; \ | |
1357 | PSMOUSE_DEFINE_ATTR(_name, 0644, \ | |
1358 | &elantech_attr_##_name, \ | |
1359 | elantech_show_int_attr, \ | |
1360 | elantech_set_int_attr) | |
1361 | ||
1dc6edec | 1362 | ELANTECH_INT_ATTR(reg_07, 0x07); |
2a0bd75e AO |
1363 | ELANTECH_INT_ATTR(reg_10, 0x10); |
1364 | ELANTECH_INT_ATTR(reg_11, 0x11); | |
1365 | ELANTECH_INT_ATTR(reg_20, 0x20); | |
1366 | ELANTECH_INT_ATTR(reg_21, 0x21); | |
1367 | ELANTECH_INT_ATTR(reg_22, 0x22); | |
1368 | ELANTECH_INT_ATTR(reg_23, 0x23); | |
1369 | ELANTECH_INT_ATTR(reg_24, 0x24); | |
1370 | ELANTECH_INT_ATTR(reg_25, 0x25); | |
1371 | ELANTECH_INT_ATTR(reg_26, 0x26); | |
f0787592 BT |
1372 | ELANTECH_INFO_ATTR(debug); |
1373 | ELANTECH_INFO_ATTR(paritycheck); | |
1374 | ELANTECH_INFO_ATTR(crc_enabled); | |
2a0bd75e AO |
1375 | |
1376 | static struct attribute *elantech_attrs[] = { | |
1dc6edec | 1377 | &psmouse_attr_reg_07.dattr.attr, |
2a0bd75e AO |
1378 | &psmouse_attr_reg_10.dattr.attr, |
1379 | &psmouse_attr_reg_11.dattr.attr, | |
1380 | &psmouse_attr_reg_20.dattr.attr, | |
1381 | &psmouse_attr_reg_21.dattr.attr, | |
1382 | &psmouse_attr_reg_22.dattr.attr, | |
1383 | &psmouse_attr_reg_23.dattr.attr, | |
1384 | &psmouse_attr_reg_24.dattr.attr, | |
1385 | &psmouse_attr_reg_25.dattr.attr, | |
1386 | &psmouse_attr_reg_26.dattr.attr, | |
1387 | &psmouse_attr_debug.dattr.attr, | |
1388 | &psmouse_attr_paritycheck.dattr.attr, | |
2d9eb81f | 1389 | &psmouse_attr_crc_enabled.dattr.attr, |
2a0bd75e AO |
1390 | NULL |
1391 | }; | |
1392 | ||
57999433 | 1393 | static const struct attribute_group elantech_attr_group = { |
2a0bd75e AO |
1394 | .attrs = elantech_attrs, |
1395 | }; | |
1396 | ||
a083632e DT |
1397 | static bool elantech_is_signature_valid(const unsigned char *param) |
1398 | { | |
1399 | static const unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10 }; | |
1400 | int i; | |
1401 | ||
1402 | if (param[0] == 0) | |
1403 | return false; | |
1404 | ||
1405 | if (param[1] == 0) | |
1406 | return true; | |
1407 | ||
271329b3 | 1408 | /* |
5f0ee9d1 HG |
1409 | * Some hw_version >= 4 models have a revision higher then 20. Meaning |
1410 | * that param[2] may be 10 or 20, skip the rates check for these. | |
271329b3 | 1411 | */ |
5f0ee9d1 HG |
1412 | if ((param[0] & 0x0f) >= 0x06 && (param[1] & 0xaf) == 0x0f && |
1413 | param[2] < 40) | |
271329b3 HG |
1414 | return true; |
1415 | ||
a083632e DT |
1416 | for (i = 0; i < ARRAY_SIZE(rates); i++) |
1417 | if (param[2] == rates[i]) | |
1418 | return false; | |
1419 | ||
1420 | return true; | |
1421 | } | |
1422 | ||
2a0bd75e AO |
1423 | /* |
1424 | * Use magic knock to detect Elantech touchpad | |
1425 | */ | |
b7802c5c | 1426 | int elantech_detect(struct psmouse *psmouse, bool set_properties) |
2a0bd75e AO |
1427 | { |
1428 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
1429 | unsigned char param[3]; | |
1430 | ||
ad56814f | 1431 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); |
2a0bd75e AO |
1432 | |
1433 | if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || | |
1434 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || | |
1435 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || | |
1436 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || | |
1437 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) { | |
b5d21704 | 1438 | psmouse_dbg(psmouse, "sending Elantech magic knock failed.\n"); |
2a0bd75e AO |
1439 | return -1; |
1440 | } | |
1441 | ||
1442 | /* | |
1443 | * Report this in case there are Elantech models that use a different | |
1444 | * set of magic numbers | |
1445 | */ | |
28f49616 JD |
1446 | if (param[0] != 0x3c || param[1] != 0x03 || |
1447 | (param[2] != 0xc8 && param[2] != 0x00)) { | |
b5d21704 DT |
1448 | psmouse_dbg(psmouse, |
1449 | "unexpected magic knock result 0x%02x, 0x%02x, 0x%02x.\n", | |
1450 | param[0], param[1], param[2]); | |
9ab7b25e AO |
1451 | return -1; |
1452 | } | |
1453 | ||
1454 | /* | |
1455 | * Query touchpad's firmware version and see if it reports known | |
1456 | * value to avoid mis-detection. Logitech mice are known to respond | |
1457 | * to Elantech magic knock and there might be more. | |
1458 | */ | |
1459 | if (synaptics_send_cmd(psmouse, ETP_FW_VERSION_QUERY, param)) { | |
b5d21704 | 1460 | psmouse_dbg(psmouse, "failed to query firmware version.\n"); |
9ab7b25e AO |
1461 | return -1; |
1462 | } | |
1463 | ||
b5d21704 DT |
1464 | psmouse_dbg(psmouse, |
1465 | "Elantech version query result 0x%02x, 0x%02x, 0x%02x.\n", | |
1466 | param[0], param[1], param[2]); | |
9ab7b25e | 1467 | |
a083632e | 1468 | if (!elantech_is_signature_valid(param)) { |
b5d21704 DT |
1469 | psmouse_dbg(psmouse, |
1470 | "Probably not a real Elantech touchpad. Aborting.\n"); | |
4af61e90 | 1471 | return -1; |
2a0bd75e AO |
1472 | } |
1473 | ||
1474 | if (set_properties) { | |
1475 | psmouse->vendor = "Elantech"; | |
1476 | psmouse->name = "Touchpad"; | |
1477 | } | |
1478 | ||
1479 | return 0; | |
1480 | } | |
1481 | ||
1482 | /* | |
1483 | * Clean up sysfs entries when disconnecting | |
1484 | */ | |
1485 | static void elantech_disconnect(struct psmouse *psmouse) | |
1486 | { | |
a2418fc4 UDB |
1487 | struct elantech_data *etd = psmouse->private; |
1488 | ||
21c48dbd BT |
1489 | /* |
1490 | * We might have left a breadcrumb when trying to | |
1491 | * set up SMbus companion. | |
1492 | */ | |
1493 | psmouse_smbus_cleanup(psmouse); | |
1494 | ||
a2418fc4 UDB |
1495 | if (etd->tp_dev) |
1496 | input_unregister_device(etd->tp_dev); | |
2a0bd75e AO |
1497 | sysfs_remove_group(&psmouse->ps2dev.serio->dev.kobj, |
1498 | &elantech_attr_group); | |
1499 | kfree(psmouse->private); | |
1500 | psmouse->private = NULL; | |
1501 | } | |
1502 | ||
1503 | /* | |
1504 | * Put the touchpad back into absolute mode when reconnecting | |
1505 | */ | |
1506 | static int elantech_reconnect(struct psmouse *psmouse) | |
1507 | { | |
a67ada7a JD |
1508 | psmouse_reset(psmouse); |
1509 | ||
2a0bd75e AO |
1510 | if (elantech_detect(psmouse, 0)) |
1511 | return -1; | |
1512 | ||
1513 | if (elantech_set_absolute_mode(psmouse)) { | |
b5d21704 DT |
1514 | psmouse_err(psmouse, |
1515 | "failed to put touchpad back into absolute mode.\n"); | |
2a0bd75e AO |
1516 | return -1; |
1517 | } | |
1518 | ||
1519 | return 0; | |
1520 | } | |
1521 | ||
0dc15879 UDB |
1522 | /* |
1523 | * Some hw_version 4 models do not work with crc_disabled | |
1524 | */ | |
1525 | static const struct dmi_system_id elantech_dmi_force_crc_enabled[] = { | |
1526 | #if defined(CONFIG_DMI) && defined(CONFIG_X86) | |
1527 | { | |
1528 | /* Fujitsu H730 does not work with crc_enabled == 0 */ | |
1529 | .matches = { | |
1530 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
1531 | DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H730"), | |
1532 | }, | |
1533 | }, | |
f9a703a5 MK |
1534 | { |
1535 | /* Fujitsu H760 does not work with crc_enabled == 0 */ | |
1536 | .matches = { | |
1537 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
1538 | DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H760"), | |
1539 | }, | |
1540 | }, | |
62837b3c DT |
1541 | { |
1542 | /* Fujitsu LIFEBOOK E544 does not work with crc_enabled == 0 */ | |
1543 | .matches = { | |
1544 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
1545 | DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E544"), | |
1546 | }, | |
1547 | }, | |
47eb0c8b UDB |
1548 | { |
1549 | /* Fujitsu LIFEBOOK E546 does not work with crc_enabled == 0 */ | |
1550 | .matches = { | |
1551 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
1552 | DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E546"), | |
1553 | }, | |
1554 | }, | |
704de489 TL |
1555 | { |
1556 | /* Fujitsu LIFEBOOK E547 does not work with crc_enabled == 0 */ | |
1557 | .matches = { | |
1558 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
1559 | DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E547"), | |
1560 | }, | |
1561 | }, | |
47c1ffb2 RK |
1562 | { |
1563 | /* Fujitsu LIFEBOOK E554 does not work with crc_enabled == 0 */ | |
1564 | .matches = { | |
1565 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
1566 | DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E554"), | |
1567 | }, | |
1568 | }, | |
1569 | { | |
62837b3c | 1570 | /* Fujitsu LIFEBOOK E556 does not work with crc_enabled == 0 */ |
47c1ffb2 RK |
1571 | .matches = { |
1572 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
62837b3c | 1573 | DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E556"), |
47c1ffb2 RK |
1574 | }, |
1575 | }, | |
47eb0c8b UDB |
1576 | { |
1577 | /* Fujitsu LIFEBOOK E557 does not work with crc_enabled == 0 */ | |
1578 | .matches = { | |
1579 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
1580 | DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E557"), | |
1581 | }, | |
1582 | }, | |
60603950 TI |
1583 | { |
1584 | /* Fujitsu LIFEBOOK U745 does not work with crc_enabled == 0 */ | |
1585 | .matches = { | |
1586 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
1587 | DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK U745"), | |
1588 | }, | |
1589 | }, | |
0dc15879 UDB |
1590 | #endif |
1591 | { } | |
1592 | }; | |
1593 | ||
36189cc3 | 1594 | /* |
fb4f8f56 HG |
1595 | * Some hw_version 3 models go into error state when we try to set |
1596 | * bit 3 and/or bit 1 of r10. | |
36189cc3 HG |
1597 | */ |
1598 | static const struct dmi_system_id no_hw_res_dmi_table[] = { | |
1599 | #if defined(CONFIG_DMI) && defined(CONFIG_X86) | |
1600 | { | |
1601 | /* Gigabyte U2442 */ | |
1602 | .matches = { | |
1603 | DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"), | |
1604 | DMI_MATCH(DMI_PRODUCT_NAME, "U2442"), | |
1605 | }, | |
1606 | }, | |
1607 | #endif | |
1608 | { } | |
1609 | }; | |
1610 | ||
3c8bbb95 JD |
1611 | /* |
1612 | * determine hardware version and set some properties according to it. | |
1613 | */ | |
f0787592 | 1614 | static int elantech_set_properties(struct elantech_device_info *info) |
3c8bbb95 | 1615 | { |
3940d618 | 1616 | /* This represents the version of IC body. */ |
f0787592 | 1617 | int ver = (info->fw_version & 0x0f0000) >> 16; |
1dc6edec | 1618 | |
3940d618 | 1619 | /* Early version of Elan touchpads doesn't obey the rule. */ |
f0787592 BT |
1620 | if (info->fw_version < 0x020030 || info->fw_version == 0x020600) |
1621 | info->hw_version = 1; | |
3940d618 JD |
1622 | else { |
1623 | switch (ver) { | |
1624 | case 2: | |
1625 | case 4: | |
f0787592 | 1626 | info->hw_version = 2; |
3940d618 JD |
1627 | break; |
1628 | case 5: | |
f0787592 | 1629 | info->hw_version = 3; |
3940d618 | 1630 | break; |
10d90030 | 1631 | case 6 ... 15: |
f0787592 | 1632 | info->hw_version = 4; |
3940d618 JD |
1633 | break; |
1634 | default: | |
1635 | return -1; | |
1636 | } | |
1637 | } | |
3c8bbb95 | 1638 | |
b56b92a9 | 1639 | /* decide which send_cmd we're gonna use early */ |
f0787592 BT |
1640 | info->send_cmd = info->hw_version >= 3 ? elantech_send_cmd : |
1641 | synaptics_send_cmd; | |
b56b92a9 JD |
1642 | |
1643 | /* Turn on packet checking by default */ | |
f0787592 | 1644 | info->paritycheck = 1; |
3c8bbb95 JD |
1645 | |
1646 | /* | |
1647 | * This firmware suffers from misreporting coordinates when | |
1648 | * a touch action starts causing the mouse cursor or scrolled page | |
1649 | * to jump. Enable a workaround. | |
1650 | */ | |
f0787592 BT |
1651 | info->jumpy_cursor = |
1652 | (info->fw_version == 0x020022 || info->fw_version == 0x020600); | |
3c8bbb95 | 1653 | |
f0787592 | 1654 | if (info->hw_version > 1) { |
3c8bbb95 | 1655 | /* For now show extra debug information */ |
f0787592 | 1656 | info->debug = 1; |
3c8bbb95 | 1657 | |
f0787592 BT |
1658 | if (info->fw_version >= 0x020800) |
1659 | info->reports_pressure = true; | |
3c8bbb95 | 1660 | } |
28f49616 | 1661 | |
acc0444b MD |
1662 | /* |
1663 | * The signatures of v3 and v4 packets change depending on the | |
1664 | * value of this hardware flag. | |
1665 | */ | |
f0787592 BT |
1666 | info->crc_enabled = (info->fw_version & 0x4000) == 0x4000 || |
1667 | dmi_check_system(elantech_dmi_force_crc_enabled); | |
acc0444b | 1668 | |
36189cc3 | 1669 | /* Enable real hardware resolution on hw_version 3 ? */ |
f0787592 | 1670 | info->set_hw_resolution = !dmi_check_system(no_hw_res_dmi_table); |
36189cc3 | 1671 | |
28f49616 | 1672 | return 0; |
3c8bbb95 JD |
1673 | } |
1674 | ||
f0787592 BT |
1675 | static int elantech_query_info(struct psmouse *psmouse, |
1676 | struct elantech_device_info *info) | |
2a0bd75e | 1677 | { |
2a0bd75e | 1678 | unsigned char param[3]; |
2a0bd75e | 1679 | |
21c48dbd BT |
1680 | memset(info, 0, sizeof(*info)); |
1681 | ||
2a0bd75e | 1682 | /* |
9ab7b25e | 1683 | * Do the version query again so we can store the result |
2a0bd75e AO |
1684 | */ |
1685 | if (synaptics_send_cmd(psmouse, ETP_FW_VERSION_QUERY, param)) { | |
b5d21704 | 1686 | psmouse_err(psmouse, "failed to query firmware version.\n"); |
f0787592 | 1687 | return -EINVAL; |
2a0bd75e | 1688 | } |
f0787592 | 1689 | info->fw_version = (param[0] << 16) | (param[1] << 8) | param[2]; |
28f49616 | 1690 | |
f0787592 | 1691 | if (elantech_set_properties(info)) { |
b5d21704 | 1692 | psmouse_err(psmouse, "unknown hardware version, aborting...\n"); |
f0787592 | 1693 | return -EINVAL; |
28f49616 | 1694 | } |
b5d21704 DT |
1695 | psmouse_info(psmouse, |
1696 | "assuming hardware version %d (with firmware version 0x%02x%02x%02x)\n", | |
f0787592 | 1697 | info->hw_version, param[0], param[1], param[2]); |
2a0bd75e | 1698 | |
f0787592 BT |
1699 | if (info->send_cmd(psmouse, ETP_CAPABILITIES_QUERY, |
1700 | info->capabilities)) { | |
b5d21704 | 1701 | psmouse_err(psmouse, "failed to query capabilities.\n"); |
f0787592 | 1702 | return -EINVAL; |
2a0bd75e | 1703 | } |
b5d21704 DT |
1704 | psmouse_info(psmouse, |
1705 | "Synaptics capabilities query result 0x%02x, 0x%02x, 0x%02x.\n", | |
f0787592 BT |
1706 | info->capabilities[0], info->capabilities[1], |
1707 | info->capabilities[2]); | |
2a0bd75e | 1708 | |
f0787592 BT |
1709 | if (info->hw_version != 1) { |
1710 | if (info->send_cmd(psmouse, ETP_SAMPLE_QUERY, info->samples)) { | |
6b30c73e | 1711 | psmouse_err(psmouse, "failed to query sample data\n"); |
f0787592 | 1712 | return -EINVAL; |
6b30c73e DL |
1713 | } |
1714 | psmouse_info(psmouse, | |
1715 | "Elan sample query result %02x, %02x, %02x\n", | |
f0787592 BT |
1716 | info->samples[0], |
1717 | info->samples[1], | |
1718 | info->samples[2]); | |
6b30c73e DL |
1719 | } |
1720 | ||
f0787592 | 1721 | if (info->samples[1] == 0x74 && info->hw_version == 0x03) { |
d899520b KL |
1722 | /* |
1723 | * This module has a bug which makes absolute mode | |
1724 | * unusable, so let's abort so we'll be using standard | |
1725 | * PS/2 protocol. | |
1726 | */ | |
1727 | psmouse_info(psmouse, | |
1728 | "absolute mode broken, forcing standard PS/2 protocol\n"); | |
f0787592 | 1729 | return -ENODEV; |
d899520b KL |
1730 | } |
1731 | ||
f0787592 BT |
1732 | /* The MSB indicates the presence of the trackpoint */ |
1733 | info->has_trackpoint = (info->capabilities[0] & 0x80) == 0x80; | |
1734 | ||
80212ed7 BT |
1735 | info->x_res = 31; |
1736 | info->y_res = 31; | |
1737 | if (info->hw_version == 4) { | |
1738 | if (elantech_get_resolution_v4(psmouse, | |
1739 | &info->x_res, | |
21c48dbd BT |
1740 | &info->y_res, |
1741 | &info->bus)) { | |
80212ed7 BT |
1742 | psmouse_warn(psmouse, |
1743 | "failed to query resolution data.\n"); | |
1744 | } | |
1745 | } | |
1746 | ||
f0787592 BT |
1747 | return 0; |
1748 | } | |
1749 | ||
21c48dbd BT |
1750 | #if defined(CONFIG_MOUSE_PS2_ELANTECH_SMBUS) |
1751 | ||
1752 | /* | |
1753 | * The newest Elantech device can use a secondary bus (over SMBus) which | |
1754 | * provides a better bandwidth and allow a better control of the touchpads. | |
1755 | * This is used to decide if we need to use this bus or not. | |
1756 | */ | |
1757 | enum { | |
1758 | ELANTECH_SMBUS_NOT_SET = -1, | |
1759 | ELANTECH_SMBUS_OFF, | |
1760 | ELANTECH_SMBUS_ON, | |
1761 | }; | |
1762 | ||
1763 | static int elantech_smbus = IS_ENABLED(CONFIG_MOUSE_ELAN_I2C_SMBUS) ? | |
1764 | ELANTECH_SMBUS_NOT_SET : ELANTECH_SMBUS_OFF; | |
1765 | module_param_named(elantech_smbus, elantech_smbus, int, 0644); | |
1766 | MODULE_PARM_DESC(elantech_smbus, "Use a secondary bus for the Elantech device."); | |
1767 | ||
1768 | static int elantech_create_smbus(struct psmouse *psmouse, | |
1769 | struct elantech_device_info *info, | |
1770 | bool leave_breadcrumbs) | |
1771 | { | |
1772 | const struct property_entry i2c_properties[] = { | |
1773 | PROPERTY_ENTRY_BOOL("elan,trackpoint"), | |
1774 | { }, | |
1775 | }; | |
1776 | struct i2c_board_info smbus_board = { | |
1777 | I2C_BOARD_INFO("elan_i2c", 0x15), | |
1778 | .flags = I2C_CLIENT_HOST_NOTIFY, | |
1779 | }; | |
1780 | ||
1781 | if (info->has_trackpoint) | |
1782 | smbus_board.properties = i2c_properties; | |
1783 | ||
bf232e46 | 1784 | return psmouse_smbus_init(psmouse, &smbus_board, NULL, 0, false, |
21c48dbd BT |
1785 | leave_breadcrumbs); |
1786 | } | |
1787 | ||
1788 | /** | |
1789 | * elantech_setup_smbus - called once the PS/2 devices are enumerated | |
1790 | * and decides to instantiate a SMBus InterTouch device. | |
1791 | */ | |
1792 | static int elantech_setup_smbus(struct psmouse *psmouse, | |
1793 | struct elantech_device_info *info, | |
1794 | bool leave_breadcrumbs) | |
1795 | { | |
1796 | int error; | |
1797 | ||
1798 | if (elantech_smbus == ELANTECH_SMBUS_OFF) | |
1799 | return -ENXIO; | |
1800 | ||
1801 | if (elantech_smbus == ELANTECH_SMBUS_NOT_SET) { | |
1802 | /* | |
df077237 BT |
1803 | * New ICs are enabled by default. |
1804 | * Old ICs are up to the user to decide. | |
21c48dbd | 1805 | */ |
df077237 BT |
1806 | if (!ETP_NEW_IC_SMBUS_HOST_NOTIFY(info->fw_version)) |
1807 | return -ENXIO; | |
21c48dbd BT |
1808 | } |
1809 | ||
1810 | psmouse_info(psmouse, "Trying to set up SMBus access\n"); | |
1811 | ||
1812 | error = elantech_create_smbus(psmouse, info, leave_breadcrumbs); | |
1813 | if (error) { | |
1814 | if (error == -EAGAIN) | |
1815 | psmouse_info(psmouse, "SMbus companion is not ready yet\n"); | |
1816 | else | |
1817 | psmouse_err(psmouse, "unable to create intertouch device\n"); | |
1818 | ||
1819 | return error; | |
1820 | } | |
1821 | ||
1822 | return 0; | |
1823 | } | |
1824 | ||
1825 | static bool elantech_use_host_notify(struct psmouse *psmouse, | |
1826 | struct elantech_device_info *info) | |
1827 | { | |
df077237 BT |
1828 | if (ETP_NEW_IC_SMBUS_HOST_NOTIFY(info->fw_version)) |
1829 | return true; | |
1830 | ||
21c48dbd BT |
1831 | switch (info->bus) { |
1832 | case ETP_BUS_PS2_ONLY: | |
1833 | /* expected case */ | |
1834 | break; | |
1835 | case ETP_BUS_SMB_ALERT_ONLY: | |
1836 | /* fall-through */ | |
1837 | case ETP_BUS_PS2_SMB_ALERT: | |
1838 | psmouse_dbg(psmouse, "Ignoring SMBus provider through alert protocol.\n"); | |
1839 | break; | |
1840 | case ETP_BUS_SMB_HST_NTFY_ONLY: | |
1841 | /* fall-through */ | |
1842 | case ETP_BUS_PS2_SMB_HST_NTFY: | |
1843 | return true; | |
1844 | default: | |
1845 | psmouse_dbg(psmouse, | |
1846 | "Ignoring SMBus bus provider %d.\n", | |
1847 | info->bus); | |
1848 | } | |
1849 | ||
1850 | return false; | |
1851 | } | |
1852 | ||
1853 | int elantech_init_smbus(struct psmouse *psmouse) | |
1854 | { | |
1855 | struct elantech_device_info info; | |
1856 | int error = -EINVAL; | |
1857 | ||
1858 | psmouse_reset(psmouse); | |
1859 | ||
1860 | error = elantech_query_info(psmouse, &info); | |
1861 | if (error) | |
1862 | goto init_fail; | |
1863 | ||
1864 | if (info.hw_version < 4) { | |
1865 | error = -ENXIO; | |
1866 | goto init_fail; | |
1867 | } | |
1868 | ||
1869 | return elantech_create_smbus(psmouse, &info, false); | |
1870 | init_fail: | |
1871 | psmouse_reset(psmouse); | |
1872 | return error; | |
1873 | } | |
1874 | #endif /* CONFIG_MOUSE_PS2_ELANTECH_SMBUS */ | |
1875 | ||
f0787592 BT |
1876 | /* |
1877 | * Initialize the touchpad and create sysfs entries | |
1878 | */ | |
1879 | static int elantech_setup_ps2(struct psmouse *psmouse, | |
1880 | struct elantech_device_info *info) | |
1881 | { | |
1882 | struct elantech_data *etd; | |
1883 | int i; | |
21c48dbd | 1884 | int error = -EINVAL; |
f0787592 BT |
1885 | struct input_dev *tp_dev; |
1886 | ||
1887 | psmouse->private = etd = kzalloc(sizeof(*etd), GFP_KERNEL); | |
1888 | if (!etd) | |
1889 | return -ENOMEM; | |
1890 | ||
1891 | etd->info = *info; | |
1892 | ||
1893 | etd->parity[0] = 1; | |
1894 | for (i = 1; i < 256; i++) | |
1895 | etd->parity[i] = etd->parity[i & (i - 1)] ^ 1; | |
1896 | ||
2a0bd75e | 1897 | if (elantech_set_absolute_mode(psmouse)) { |
b5d21704 DT |
1898 | psmouse_err(psmouse, |
1899 | "failed to put touchpad into absolute mode.\n"); | |
2a0bd75e AO |
1900 | goto init_fail; |
1901 | } | |
1902 | ||
f0787592 | 1903 | if (info->fw_version == 0x381f17) { |
bd884149 UDB |
1904 | etd->original_set_rate = psmouse->set_rate; |
1905 | psmouse->set_rate = elantech_set_rate_restore_reg_07; | |
1906 | } | |
1907 | ||
28f49616 | 1908 | if (elantech_set_input_params(psmouse)) { |
b5d21704 | 1909 | psmouse_err(psmouse, "failed to query touchpad range.\n"); |
28f49616 JD |
1910 | goto init_fail; |
1911 | } | |
2a0bd75e AO |
1912 | |
1913 | error = sysfs_create_group(&psmouse->ps2dev.serio->dev.kobj, | |
1914 | &elantech_attr_group); | |
1915 | if (error) { | |
b5d21704 DT |
1916 | psmouse_err(psmouse, |
1917 | "failed to create sysfs attributes, error: %d.\n", | |
1918 | error); | |
2a0bd75e AO |
1919 | goto init_fail; |
1920 | } | |
1921 | ||
f0787592 | 1922 | if (info->has_trackpoint) { |
a2418fc4 UDB |
1923 | tp_dev = input_allocate_device(); |
1924 | ||
1925 | if (!tp_dev) { | |
1926 | error = -ENOMEM; | |
1927 | goto init_fail_tp_alloc; | |
1928 | } | |
1929 | ||
1930 | etd->tp_dev = tp_dev; | |
1931 | snprintf(etd->tp_phys, sizeof(etd->tp_phys), "%s/input1", | |
1932 | psmouse->ps2dev.serio->phys); | |
1933 | tp_dev->phys = etd->tp_phys; | |
9096a45d | 1934 | tp_dev->name = "ETPS/2 Elantech TrackPoint"; |
a2418fc4 UDB |
1935 | tp_dev->id.bustype = BUS_I8042; |
1936 | tp_dev->id.vendor = 0x0002; | |
1937 | tp_dev->id.product = PSMOUSE_ELANTECH; | |
1938 | tp_dev->id.version = 0x0000; | |
1939 | tp_dev->dev.parent = &psmouse->ps2dev.serio->dev; | |
1940 | tp_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); | |
1941 | tp_dev->relbit[BIT_WORD(REL_X)] = | |
1942 | BIT_MASK(REL_X) | BIT_MASK(REL_Y); | |
1943 | tp_dev->keybit[BIT_WORD(BTN_LEFT)] = | |
1944 | BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | | |
1945 | BIT_MASK(BTN_RIGHT); | |
7611392f | 1946 | |
01d4cd5c | 1947 | __set_bit(INPUT_PROP_POINTER, tp_dev->propbit); |
7611392f HG |
1948 | __set_bit(INPUT_PROP_POINTING_STICK, tp_dev->propbit); |
1949 | ||
a2418fc4 UDB |
1950 | error = input_register_device(etd->tp_dev); |
1951 | if (error < 0) | |
1952 | goto init_fail_tp_reg; | |
1953 | } | |
1954 | ||
2a0bd75e AO |
1955 | psmouse->protocol_handler = elantech_process_byte; |
1956 | psmouse->disconnect = elantech_disconnect; | |
1957 | psmouse->reconnect = elantech_reconnect; | |
f0787592 | 1958 | psmouse->pktsize = info->hw_version > 1 ? 6 : 4; |
2a0bd75e AO |
1959 | |
1960 | return 0; | |
a2418fc4 UDB |
1961 | init_fail_tp_reg: |
1962 | input_free_device(tp_dev); | |
1963 | init_fail_tp_alloc: | |
1964 | sysfs_remove_group(&psmouse->ps2dev.serio->dev.kobj, | |
1965 | &elantech_attr_group); | |
2a0bd75e AO |
1966 | init_fail: |
1967 | kfree(etd); | |
a2418fc4 | 1968 | return error; |
2a0bd75e | 1969 | } |
f0787592 | 1970 | |
21c48dbd | 1971 | int elantech_init_ps2(struct psmouse *psmouse) |
f0787592 BT |
1972 | { |
1973 | struct elantech_device_info info; | |
1974 | int error = -EINVAL; | |
1975 | ||
1976 | psmouse_reset(psmouse); | |
1977 | ||
1978 | error = elantech_query_info(psmouse, &info); | |
1979 | if (error) | |
1980 | goto init_fail; | |
1981 | ||
1982 | error = elantech_setup_ps2(psmouse, &info); | |
1983 | if (error) | |
1984 | goto init_fail; | |
1985 | ||
1986 | return 0; | |
1987 | init_fail: | |
1988 | psmouse_reset(psmouse); | |
1989 | return error; | |
1990 | } | |
21c48dbd BT |
1991 | |
1992 | int elantech_init(struct psmouse *psmouse) | |
1993 | { | |
1994 | struct elantech_device_info info; | |
1995 | int error = -EINVAL; | |
1996 | ||
1997 | psmouse_reset(psmouse); | |
1998 | ||
1999 | error = elantech_query_info(psmouse, &info); | |
2000 | if (error) | |
2001 | goto init_fail; | |
2002 | ||
2003 | #if defined(CONFIG_MOUSE_PS2_ELANTECH_SMBUS) | |
2004 | ||
2005 | if (elantech_use_host_notify(psmouse, &info)) { | |
2006 | if (!IS_ENABLED(CONFIG_MOUSE_ELAN_I2C_SMBUS) || | |
2007 | !IS_ENABLED(CONFIG_MOUSE_PS2_ELANTECH_SMBUS)) { | |
2008 | psmouse_warn(psmouse, | |
2009 | "The touchpad can support a better bus than the too old PS/2 protocol. " | |
2010 | "Make sure MOUSE_PS2_ELANTECH_SMBUS and MOUSE_ELAN_I2C_SMBUS are enabled to get a better touchpad experience.\n"); | |
2011 | } | |
2012 | error = elantech_setup_smbus(psmouse, &info, true); | |
2013 | if (!error) | |
2014 | return PSMOUSE_ELANTECH_SMBUS; | |
2015 | } | |
2016 | ||
2017 | #endif /* CONFIG_MOUSE_PS2_ELANTECH_SMBUS */ | |
2018 | ||
2019 | error = elantech_setup_ps2(psmouse, &info); | |
2020 | if (error < 0) { | |
2021 | /* | |
2022 | * Not using any flavor of Elantech support, so clean up | |
2023 | * SMbus breadcrumbs, if any. | |
2024 | */ | |
2025 | psmouse_smbus_cleanup(psmouse); | |
2026 | goto init_fail; | |
2027 | } | |
2028 | ||
2029 | return PSMOUSE_ELANTECH; | |
2030 | init_fail: | |
2031 | psmouse_reset(psmouse); | |
2032 | return error; | |
2033 | } |