Commit | Line | Data |
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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
2a0bd75e | 2 | /* |
3f8c0df4 | 3 | * Elantech Touchpad driver (v6) |
2a0bd75e | 4 | * |
3f8c0df4 | 5 | * Copyright (C) 2007-2009 Arjan Opmeer <arjan@opmeer.net> |
2a0bd75e | 6 | * |
2a0bd75e AO |
7 | * Trademarks are the property of their respective owners. |
8 | */ | |
9 | ||
10 | #include <linux/delay.h> | |
36189cc3 | 11 | #include <linux/dmi.h> |
5a0e3ad6 | 12 | #include <linux/slab.h> |
2a0bd75e | 13 | #include <linux/module.h> |
21c48dbd | 14 | #include <linux/i2c.h> |
2a0bd75e | 15 | #include <linux/input.h> |
89eec4d7 | 16 | #include <linux/input/mt.h> |
21c48dbd | 17 | #include <linux/platform_device.h> |
2a0bd75e AO |
18 | #include <linux/serio.h> |
19 | #include <linux/libps2.h> | |
a2418fc4 | 20 | #include <asm/unaligned.h> |
2a0bd75e AO |
21 | #include "psmouse.h" |
22 | #include "elantech.h" | |
21c48dbd | 23 | #include "elan_i2c.h" |
2a0bd75e | 24 | |
d4ae84a8 DT |
25 | #define elantech_debug(fmt, ...) \ |
26 | do { \ | |
f0787592 | 27 | if (etd->info.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 | { | |
08be954b | 38 | if (ps2_sliced_command(&psmouse->ps2dev, c) || |
2a0bd75e | 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 | ||
f0787592 | 108 | switch (etd->info.hw_version) { |
2a0bd75e | 109 | case 1: |
08be954b DT |
110 | if (ps2_sliced_command(&psmouse->ps2dev, ETP_REGISTER_READ) || |
111 | ps2_sliced_command(&psmouse->ps2dev, reg) || | |
2a0bd75e AO |
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); |
f0787592 | 140 | else if (etd->info.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 | ||
f0787592 | 163 | switch (etd->info.hw_version) { |
2a0bd75e | 164 | case 1: |
08be954b DT |
165 | if (ps2_sliced_command(&psmouse->ps2dev, ETP_REGISTER_WRITE) || |
166 | ps2_sliced_command(&psmouse->ps2dev, reg) || | |
167 | ps2_sliced_command(&psmouse->ps2dev, val) || | |
2a0bd75e AO |
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 | 224 | { |
014420fe BT |
225 | psmouse_printk(KERN_DEBUG, psmouse, "PS/2 packet [%*ph]\n", |
226 | psmouse->pktsize, psmouse->packet); | |
2a0bd75e AO |
227 | } |
228 | ||
88463497 BT |
229 | /* |
230 | * Advertise INPUT_PROP_BUTTONPAD for clickpads. The testing of bit 12 in | |
231 | * fw_version for this is based on the following fw_version & caps table: | |
232 | * | |
233 | * Laptop-model: fw_version: caps: buttons: | |
234 | * Acer S3 0x461f00 10, 13, 0e clickpad | |
235 | * Acer S7-392 0x581f01 50, 17, 0d clickpad | |
236 | * Acer V5-131 0x461f02 01, 16, 0c clickpad | |
237 | * Acer V5-551 0x461f00 ? clickpad | |
238 | * Asus K53SV 0x450f01 78, 15, 0c 2 hw buttons | |
239 | * Asus G46VW 0x460f02 00, 18, 0c 2 hw buttons | |
240 | * Asus G750JX 0x360f00 00, 16, 0c 2 hw buttons | |
241 | * Asus TP500LN 0x381f17 10, 14, 0e clickpad | |
242 | * Asus X750JN 0x381f17 10, 14, 0e clickpad | |
243 | * Asus UX31 0x361f00 20, 15, 0e clickpad | |
244 | * Asus UX32VD 0x361f02 00, 15, 0e clickpad | |
245 | * Avatar AVIU-145A2 0x361f00 ? clickpad | |
246 | * Fujitsu CELSIUS H760 0x570f02 40, 14, 0c 3 hw buttons (**) | |
247 | * Fujitsu CELSIUS H780 0x5d0f02 41, 16, 0d 3 hw buttons (**) | |
248 | * Fujitsu LIFEBOOK E544 0x470f00 d0, 12, 09 2 hw buttons | |
249 | * Fujitsu LIFEBOOK E546 0x470f00 50, 12, 09 2 hw buttons | |
250 | * Fujitsu LIFEBOOK E547 0x470f00 50, 12, 09 2 hw buttons | |
251 | * Fujitsu LIFEBOOK E554 0x570f01 40, 14, 0c 2 hw buttons | |
252 | * Fujitsu LIFEBOOK E557 0x570f01 40, 14, 0c 2 hw buttons | |
253 | * Fujitsu T725 0x470f01 05, 12, 09 2 hw buttons | |
254 | * Fujitsu H730 0x570f00 c0, 14, 0c 3 hw buttons (**) | |
255 | * Gigabyte U2442 0x450f01 58, 17, 0c 2 hw buttons | |
256 | * Lenovo L430 0x350f02 b9, 15, 0c 2 hw buttons (*) | |
257 | * Lenovo L530 0x350f02 b9, 15, 0c 2 hw buttons (*) | |
258 | * Samsung NF210 0x150b00 78, 14, 0a 2 hw buttons | |
259 | * Samsung NP770Z5E 0x575f01 10, 15, 0f clickpad | |
260 | * Samsung NP700Z5B 0x361f06 21, 15, 0f clickpad | |
261 | * Samsung NP900X3E-A02 0x575f03 ? clickpad | |
262 | * Samsung NP-QX410 0x851b00 19, 14, 0c clickpad | |
263 | * Samsung RC512 0x450f00 08, 15, 0c 2 hw buttons | |
264 | * Samsung RF710 0x450f00 ? 2 hw buttons | |
265 | * System76 Pangolin 0x250f01 ? 2 hw buttons | |
266 | * (*) + 3 trackpoint buttons | |
267 | * (**) + 0 trackpoint buttons | |
268 | * Note: Lenovo L430 and Lenovo L530 have the same fw_version/caps | |
269 | */ | |
270 | static inline int elantech_is_buttonpad(struct elantech_device_info *info) | |
271 | { | |
272 | return info->fw_version & 0x001000; | |
273 | } | |
274 | ||
2a0bd75e AO |
275 | /* |
276 | * Interpret complete data packets and report absolute mode input events for | |
277 | * hardware version 1. (4 byte packets) | |
278 | */ | |
279 | static void elantech_report_absolute_v1(struct psmouse *psmouse) | |
280 | { | |
281 | struct input_dev *dev = psmouse->dev; | |
282 | struct elantech_data *etd = psmouse->private; | |
283 | unsigned char *packet = psmouse->packet; | |
284 | int fingers; | |
285 | ||
f0787592 | 286 | if (etd->info.fw_version < 0x020000) { |
e938fbfd FR |
287 | /* |
288 | * byte 0: D U p1 p2 1 p3 R L | |
289 | * byte 1: f 0 th tw x9 x8 y9 y8 | |
290 | */ | |
2a0bd75e AO |
291 | fingers = ((packet[1] & 0x80) >> 7) + |
292 | ((packet[1] & 0x30) >> 4); | |
293 | } else { | |
e938fbfd FR |
294 | /* |
295 | * byte 0: n1 n0 p2 p1 1 p3 R L | |
296 | * byte 1: 0 0 0 0 x9 x8 y9 y8 | |
297 | */ | |
2a0bd75e AO |
298 | fingers = (packet[0] & 0xc0) >> 6; |
299 | } | |
300 | ||
f0787592 | 301 | if (etd->info.jumpy_cursor) { |
7f29f17b ÉP |
302 | if (fingers != 1) { |
303 | etd->single_finger_reports = 0; | |
304 | } else if (etd->single_finger_reports < 2) { | |
305 | /* Discard first 2 reports of one finger, bogus */ | |
306 | etd->single_finger_reports++; | |
d4ae84a8 | 307 | elantech_debug("discarding packet\n"); |
7f29f17b | 308 | return; |
3f8c0df4 AO |
309 | } |
310 | } | |
311 | ||
2a0bd75e AO |
312 | input_report_key(dev, BTN_TOUCH, fingers != 0); |
313 | ||
e938fbfd FR |
314 | /* |
315 | * byte 2: x7 x6 x5 x4 x3 x2 x1 x0 | |
316 | * byte 3: y7 y6 y5 y4 y3 y2 y1 y0 | |
317 | */ | |
2a0bd75e AO |
318 | if (fingers) { |
319 | input_report_abs(dev, ABS_X, | |
320 | ((packet[1] & 0x0c) << 6) | packet[2]); | |
e938fbfd | 321 | input_report_abs(dev, ABS_Y, |
230282a7 | 322 | etd->y_max - (((packet[1] & 0x03) << 8) | packet[3])); |
2a0bd75e AO |
323 | } |
324 | ||
325 | input_report_key(dev, BTN_TOOL_FINGER, fingers == 1); | |
326 | input_report_key(dev, BTN_TOOL_DOUBLETAP, fingers == 2); | |
327 | input_report_key(dev, BTN_TOOL_TRIPLETAP, fingers == 3); | |
1ef85805 DT |
328 | |
329 | psmouse_report_standard_buttons(dev, packet[0]); | |
2a0bd75e | 330 | |
f0787592 BT |
331 | if (etd->info.fw_version < 0x020000 && |
332 | (etd->info.capabilities[0] & ETP_CAP_HAS_ROCKER)) { | |
2a0bd75e AO |
333 | /* rocker up */ |
334 | input_report_key(dev, BTN_FORWARD, packet[0] & 0x40); | |
335 | /* rocker down */ | |
336 | input_report_key(dev, BTN_BACK, packet[0] & 0x80); | |
337 | } | |
338 | ||
339 | input_sync(dev); | |
340 | } | |
341 | ||
89eec4d7 ÉP |
342 | static void elantech_set_slot(struct input_dev *dev, int slot, bool active, |
343 | unsigned int x, unsigned int y) | |
344 | { | |
345 | input_mt_slot(dev, slot); | |
346 | input_mt_report_slot_state(dev, MT_TOOL_FINGER, active); | |
347 | if (active) { | |
348 | input_report_abs(dev, ABS_MT_POSITION_X, x); | |
349 | input_report_abs(dev, ABS_MT_POSITION_Y, y); | |
350 | } | |
351 | } | |
352 | ||
353 | /* x1 < x2 and y1 < y2 when two fingers, x = y = 0 when not pressed */ | |
354 | static void elantech_report_semi_mt_data(struct input_dev *dev, | |
355 | unsigned int num_fingers, | |
356 | unsigned int x1, unsigned int y1, | |
357 | unsigned int x2, unsigned int y2) | |
358 | { | |
359 | elantech_set_slot(dev, 0, num_fingers != 0, x1, y1); | |
3c0213d1 | 360 | elantech_set_slot(dev, 1, num_fingers >= 2, x2, y2); |
89eec4d7 ÉP |
361 | } |
362 | ||
2a0bd75e AO |
363 | /* |
364 | * Interpret complete data packets and report absolute mode input events for | |
365 | * hardware version 2. (6 byte packets) | |
366 | */ | |
367 | static void elantech_report_absolute_v2(struct psmouse *psmouse) | |
368 | { | |
f941c705 | 369 | struct elantech_data *etd = psmouse->private; |
2a0bd75e AO |
370 | struct input_dev *dev = psmouse->dev; |
371 | unsigned char *packet = psmouse->packet; | |
461a7917 JD |
372 | unsigned int fingers, x1 = 0, y1 = 0, x2 = 0, y2 = 0; |
373 | unsigned int width = 0, pres = 0; | |
2a0bd75e AO |
374 | |
375 | /* byte 0: n1 n0 . . . . R L */ | |
376 | fingers = (packet[0] & 0xc0) >> 6; | |
2a0bd75e AO |
377 | |
378 | switch (fingers) { | |
22462d9f ÉP |
379 | case 3: |
380 | /* | |
381 | * Same as one finger, except report of more than 3 fingers: | |
382 | * byte 3: n4 . w1 w0 . . . . | |
383 | */ | |
384 | if (packet[3] & 0x80) | |
385 | fingers = 4; | |
17a4ed55 | 386 | /* fall through */ |
2a0bd75e | 387 | case 1: |
e938fbfd | 388 | /* |
11559619 | 389 | * byte 1: . . . . x11 x10 x9 x8 |
e938fbfd FR |
390 | * byte 2: x7 x6 x5 x4 x4 x2 x1 x0 |
391 | */ | |
11559619 | 392 | x1 = ((packet[1] & 0x0f) << 8) | packet[2]; |
e938fbfd | 393 | /* |
11559619 | 394 | * byte 4: . . . . y11 y10 y9 y8 |
e938fbfd FR |
395 | * byte 5: y7 y6 y5 y4 y3 y2 y1 y0 |
396 | */ | |
230282a7 | 397 | y1 = etd->y_max - (((packet[4] & 0x0f) << 8) | packet[5]); |
89eec4d7 | 398 | |
f941c705 ÉP |
399 | pres = (packet[1] & 0xf0) | ((packet[4] & 0xf0) >> 4); |
400 | width = ((packet[0] & 0x30) >> 2) | ((packet[3] & 0x30) >> 4); | |
2a0bd75e AO |
401 | break; |
402 | ||
403 | case 2: | |
e938fbfd FR |
404 | /* |
405 | * The coordinate of each finger is reported separately | |
406 | * with a lower resolution for two finger touches: | |
407 | * byte 0: . . ay8 ax8 . . . . | |
408 | * byte 1: ax7 ax6 ax5 ax4 ax3 ax2 ax1 ax0 | |
409 | */ | |
461a7917 | 410 | x1 = (((packet[0] & 0x10) << 4) | packet[1]) << 2; |
2a0bd75e | 411 | /* byte 2: ay7 ay6 ay5 ay4 ay3 ay2 ay1 ay0 */ |
230282a7 | 412 | y1 = etd->y_max - |
461a7917 | 413 | ((((packet[0] & 0x20) << 3) | packet[2]) << 2); |
e938fbfd FR |
414 | /* |
415 | * byte 3: . . by8 bx8 . . . . | |
416 | * byte 4: bx7 bx6 bx5 bx4 bx3 bx2 bx1 bx0 | |
417 | */ | |
461a7917 | 418 | x2 = (((packet[3] & 0x10) << 4) | packet[4]) << 2; |
2a0bd75e | 419 | /* byte 5: by7 by8 by5 by4 by3 by2 by1 by0 */ |
230282a7 | 420 | y2 = etd->y_max - |
461a7917 | 421 | ((((packet[3] & 0x20) << 3) | packet[5]) << 2); |
f941c705 ÉP |
422 | |
423 | /* Unknown so just report sensible values */ | |
424 | pres = 127; | |
425 | width = 7; | |
2a0bd75e AO |
426 | break; |
427 | } | |
428 | ||
461a7917 JD |
429 | input_report_key(dev, BTN_TOUCH, fingers != 0); |
430 | if (fingers != 0) { | |
431 | input_report_abs(dev, ABS_X, x1); | |
432 | input_report_abs(dev, ABS_Y, y1); | |
433 | } | |
89eec4d7 | 434 | elantech_report_semi_mt_data(dev, fingers, x1, y1, x2, y2); |
2a0bd75e AO |
435 | input_report_key(dev, BTN_TOOL_FINGER, fingers == 1); |
436 | input_report_key(dev, BTN_TOOL_DOUBLETAP, fingers == 2); | |
437 | input_report_key(dev, BTN_TOOL_TRIPLETAP, fingers == 3); | |
22462d9f | 438 | input_report_key(dev, BTN_TOOL_QUADTAP, fingers == 4); |
1ef85805 | 439 | psmouse_report_standard_buttons(dev, packet[0]); |
f0787592 | 440 | if (etd->info.reports_pressure) { |
f941c705 ÉP |
441 | input_report_abs(dev, ABS_PRESSURE, pres); |
442 | input_report_abs(dev, ABS_TOOL_WIDTH, width); | |
443 | } | |
2a0bd75e AO |
444 | |
445 | input_sync(dev); | |
446 | } | |
447 | ||
a2418fc4 UDB |
448 | static void elantech_report_trackpoint(struct psmouse *psmouse, |
449 | int packet_type) | |
450 | { | |
451 | /* | |
452 | * byte 0: 0 0 sx sy 0 M R L | |
453 | * byte 1:~sx 0 0 0 0 0 0 0 | |
454 | * byte 2:~sy 0 0 0 0 0 0 0 | |
455 | * byte 3: 0 0 ~sy ~sx 0 1 1 0 | |
456 | * byte 4: x7 x6 x5 x4 x3 x2 x1 x0 | |
457 | * byte 5: y7 y6 y5 y4 y3 y2 y1 y0 | |
458 | * | |
459 | * x and y are written in two's complement spread | |
460 | * over 9 bits with sx/sy the relative top bit and | |
461 | * x7..x0 and y7..y0 the lower bits. | |
462 | * The sign of y is opposite to what the input driver | |
463 | * expects for a relative movement | |
464 | */ | |
465 | ||
466 | struct elantech_data *etd = psmouse->private; | |
467 | struct input_dev *tp_dev = etd->tp_dev; | |
468 | unsigned char *packet = psmouse->packet; | |
469 | int x, y; | |
470 | u32 t; | |
471 | ||
a2418fc4 UDB |
472 | t = get_unaligned_le32(&packet[0]); |
473 | ||
474 | switch (t & ~7U) { | |
475 | case 0x06000030U: | |
476 | case 0x16008020U: | |
477 | case 0x26800010U: | |
478 | case 0x36808000U: | |
479 | x = packet[4] - (int)((packet[1]^0x80) << 1); | |
480 | y = (int)((packet[2]^0x80) << 1) - packet[5]; | |
481 | ||
1ef85805 | 482 | psmouse_report_standard_buttons(tp_dev, packet[0]); |
a2418fc4 UDB |
483 | |
484 | input_report_rel(tp_dev, REL_X, x); | |
485 | input_report_rel(tp_dev, REL_Y, y); | |
486 | ||
487 | input_sync(tp_dev); | |
488 | ||
489 | break; | |
490 | ||
491 | default: | |
492 | /* Dump unexpected packet sequences if debug=1 (default) */ | |
f0787592 | 493 | if (etd->info.debug == 1) |
a2418fc4 UDB |
494 | elantech_packet_dump(psmouse); |
495 | ||
496 | break; | |
497 | } | |
498 | } | |
499 | ||
28f49616 JD |
500 | /* |
501 | * Interpret complete data packets and report absolute mode input events for | |
502 | * hardware version 3. (12 byte packets for two fingers) | |
503 | */ | |
504 | static void elantech_report_absolute_v3(struct psmouse *psmouse, | |
505 | int packet_type) | |
506 | { | |
507 | struct input_dev *dev = psmouse->dev; | |
508 | struct elantech_data *etd = psmouse->private; | |
509 | unsigned char *packet = psmouse->packet; | |
510 | unsigned int fingers = 0, x1 = 0, y1 = 0, x2 = 0, y2 = 0; | |
511 | unsigned int width = 0, pres = 0; | |
512 | ||
513 | /* byte 0: n1 n0 . . . . R L */ | |
514 | fingers = (packet[0] & 0xc0) >> 6; | |
515 | ||
516 | switch (fingers) { | |
517 | case 3: | |
518 | case 1: | |
519 | /* | |
520 | * byte 1: . . . . x11 x10 x9 x8 | |
521 | * byte 2: x7 x6 x5 x4 x4 x2 x1 x0 | |
522 | */ | |
523 | x1 = ((packet[1] & 0x0f) << 8) | packet[2]; | |
524 | /* | |
525 | * byte 4: . . . . y11 y10 y9 y8 | |
526 | * byte 5: y7 y6 y5 y4 y3 y2 y1 y0 | |
527 | */ | |
528 | y1 = etd->y_max - (((packet[4] & 0x0f) << 8) | packet[5]); | |
529 | break; | |
530 | ||
531 | case 2: | |
532 | if (packet_type == PACKET_V3_HEAD) { | |
533 | /* | |
534 | * byte 1: . . . . ax11 ax10 ax9 ax8 | |
535 | * byte 2: ax7 ax6 ax5 ax4 ax3 ax2 ax1 ax0 | |
536 | */ | |
1dc6edec | 537 | etd->mt[0].x = ((packet[1] & 0x0f) << 8) | packet[2]; |
28f49616 JD |
538 | /* |
539 | * byte 4: . . . . ay11 ay10 ay9 ay8 | |
540 | * byte 5: ay7 ay6 ay5 ay4 ay3 ay2 ay1 ay0 | |
541 | */ | |
1dc6edec | 542 | etd->mt[0].y = etd->y_max - |
28f49616 JD |
543 | (((packet[4] & 0x0f) << 8) | packet[5]); |
544 | /* | |
545 | * wait for next packet | |
546 | */ | |
547 | return; | |
548 | } | |
549 | ||
550 | /* packet_type == PACKET_V3_TAIL */ | |
1dc6edec JD |
551 | x1 = etd->mt[0].x; |
552 | y1 = etd->mt[0].y; | |
28f49616 JD |
553 | x2 = ((packet[1] & 0x0f) << 8) | packet[2]; |
554 | y2 = etd->y_max - (((packet[4] & 0x0f) << 8) | packet[5]); | |
555 | break; | |
556 | } | |
557 | ||
558 | pres = (packet[1] & 0xf0) | ((packet[4] & 0xf0) >> 4); | |
559 | width = ((packet[0] & 0x30) >> 2) | ((packet[3] & 0x30) >> 4); | |
560 | ||
561 | input_report_key(dev, BTN_TOUCH, fingers != 0); | |
562 | if (fingers != 0) { | |
563 | input_report_abs(dev, ABS_X, x1); | |
564 | input_report_abs(dev, ABS_Y, y1); | |
565 | } | |
566 | elantech_report_semi_mt_data(dev, fingers, x1, y1, x2, y2); | |
567 | input_report_key(dev, BTN_TOOL_FINGER, fingers == 1); | |
568 | input_report_key(dev, BTN_TOOL_DOUBLETAP, fingers == 2); | |
569 | input_report_key(dev, BTN_TOOL_TRIPLETAP, fingers == 3); | |
cd9e83e2 HG |
570 | |
571 | /* For clickpads map both buttons to BTN_LEFT */ | |
88463497 | 572 | if (elantech_is_buttonpad(&etd->info)) |
cd9e83e2 | 573 | input_report_key(dev, BTN_LEFT, packet[0] & 0x03); |
1ef85805 DT |
574 | else |
575 | psmouse_report_standard_buttons(dev, packet[0]); | |
cd9e83e2 | 576 | |
28f49616 JD |
577 | input_report_abs(dev, ABS_PRESSURE, pres); |
578 | input_report_abs(dev, ABS_TOOL_WIDTH, width); | |
579 | ||
580 | input_sync(dev); | |
581 | } | |
582 | ||
1dc6edec JD |
583 | static void elantech_input_sync_v4(struct psmouse *psmouse) |
584 | { | |
585 | struct input_dev *dev = psmouse->dev; | |
cd9e83e2 | 586 | struct elantech_data *etd = psmouse->private; |
1dc6edec JD |
587 | unsigned char *packet = psmouse->packet; |
588 | ||
cd9e83e2 | 589 | /* For clickpads map both buttons to BTN_LEFT */ |
88463497 | 590 | if (elantech_is_buttonpad(&etd->info)) |
cd9e83e2 | 591 | input_report_key(dev, BTN_LEFT, packet[0] & 0x03); |
1ef85805 DT |
592 | else |
593 | psmouse_report_standard_buttons(dev, packet[0]); | |
cd9e83e2 | 594 | |
1dc6edec JD |
595 | input_mt_report_pointer_emulation(dev, true); |
596 | input_sync(dev); | |
597 | } | |
598 | ||
599 | static void process_packet_status_v4(struct psmouse *psmouse) | |
600 | { | |
601 | struct input_dev *dev = psmouse->dev; | |
602 | unsigned char *packet = psmouse->packet; | |
603 | unsigned fingers; | |
604 | int i; | |
605 | ||
606 | /* notify finger state change */ | |
607 | fingers = packet[1] & 0x1f; | |
608 | for (i = 0; i < ETP_MAX_FINGERS; i++) { | |
609 | if ((fingers & (1 << i)) == 0) { | |
610 | input_mt_slot(dev, i); | |
611 | input_mt_report_slot_state(dev, MT_TOOL_FINGER, false); | |
612 | } | |
613 | } | |
614 | ||
615 | elantech_input_sync_v4(psmouse); | |
616 | } | |
617 | ||
618 | static void process_packet_head_v4(struct psmouse *psmouse) | |
619 | { | |
620 | struct input_dev *dev = psmouse->dev; | |
621 | struct elantech_data *etd = psmouse->private; | |
622 | unsigned char *packet = psmouse->packet; | |
623 | int id = ((packet[3] & 0xe0) >> 5) - 1; | |
624 | int pres, traces; | |
625 | ||
626 | if (id < 0) | |
627 | return; | |
628 | ||
629 | etd->mt[id].x = ((packet[1] & 0x0f) << 8) | packet[2]; | |
630 | etd->mt[id].y = etd->y_max - (((packet[4] & 0x0f) << 8) | packet[5]); | |
631 | pres = (packet[1] & 0xf0) | ((packet[4] & 0xf0) >> 4); | |
632 | traces = (packet[0] & 0xf0) >> 4; | |
633 | ||
634 | input_mt_slot(dev, id); | |
635 | input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); | |
636 | ||
637 | input_report_abs(dev, ABS_MT_POSITION_X, etd->mt[id].x); | |
638 | input_report_abs(dev, ABS_MT_POSITION_Y, etd->mt[id].y); | |
639 | input_report_abs(dev, ABS_MT_PRESSURE, pres); | |
640 | input_report_abs(dev, ABS_MT_TOUCH_MAJOR, traces * etd->width); | |
641 | /* report this for backwards compatibility */ | |
642 | input_report_abs(dev, ABS_TOOL_WIDTH, traces); | |
643 | ||
644 | elantech_input_sync_v4(psmouse); | |
645 | } | |
646 | ||
647 | static void process_packet_motion_v4(struct psmouse *psmouse) | |
648 | { | |
649 | struct input_dev *dev = psmouse->dev; | |
650 | struct elantech_data *etd = psmouse->private; | |
651 | unsigned char *packet = psmouse->packet; | |
652 | int weight, delta_x1 = 0, delta_y1 = 0, delta_x2 = 0, delta_y2 = 0; | |
653 | int id, sid; | |
654 | ||
655 | id = ((packet[0] & 0xe0) >> 5) - 1; | |
656 | if (id < 0) | |
657 | return; | |
658 | ||
659 | sid = ((packet[3] & 0xe0) >> 5) - 1; | |
660 | weight = (packet[0] & 0x10) ? ETP_WEIGHT_VALUE : 1; | |
661 | /* | |
662 | * Motion packets give us the delta of x, y values of specific fingers, | |
663 | * but in two's complement. Let the compiler do the conversion for us. | |
664 | * Also _enlarge_ the numbers to int, in case of overflow. | |
665 | */ | |
666 | delta_x1 = (signed char)packet[1]; | |
667 | delta_y1 = (signed char)packet[2]; | |
668 | delta_x2 = (signed char)packet[4]; | |
669 | delta_y2 = (signed char)packet[5]; | |
670 | ||
671 | etd->mt[id].x += delta_x1 * weight; | |
672 | etd->mt[id].y -= delta_y1 * weight; | |
673 | input_mt_slot(dev, id); | |
674 | input_report_abs(dev, ABS_MT_POSITION_X, etd->mt[id].x); | |
675 | input_report_abs(dev, ABS_MT_POSITION_Y, etd->mt[id].y); | |
676 | ||
677 | if (sid >= 0) { | |
678 | etd->mt[sid].x += delta_x2 * weight; | |
679 | etd->mt[sid].y -= delta_y2 * weight; | |
680 | input_mt_slot(dev, sid); | |
681 | input_report_abs(dev, ABS_MT_POSITION_X, etd->mt[sid].x); | |
682 | input_report_abs(dev, ABS_MT_POSITION_Y, etd->mt[sid].y); | |
683 | } | |
684 | ||
685 | elantech_input_sync_v4(psmouse); | |
686 | } | |
687 | ||
688 | static void elantech_report_absolute_v4(struct psmouse *psmouse, | |
689 | int packet_type) | |
690 | { | |
691 | switch (packet_type) { | |
692 | case PACKET_V4_STATUS: | |
693 | process_packet_status_v4(psmouse); | |
694 | break; | |
695 | ||
696 | case PACKET_V4_HEAD: | |
697 | process_packet_head_v4(psmouse); | |
698 | break; | |
699 | ||
700 | case PACKET_V4_MOTION: | |
701 | process_packet_motion_v4(psmouse); | |
702 | break; | |
703 | ||
704 | case PACKET_UNKNOWN: | |
705 | default: | |
706 | /* impossible to get here */ | |
707 | break; | |
708 | } | |
709 | } | |
710 | ||
7894f21b | 711 | static int elantech_packet_check_v1(struct psmouse *psmouse) |
2a0bd75e AO |
712 | { |
713 | struct elantech_data *etd = psmouse->private; | |
714 | unsigned char *packet = psmouse->packet; | |
715 | unsigned char p1, p2, p3; | |
716 | ||
717 | /* Parity bits are placed differently */ | |
f0787592 | 718 | if (etd->info.fw_version < 0x020000) { |
2a0bd75e AO |
719 | /* byte 0: D U p1 p2 1 p3 R L */ |
720 | p1 = (packet[0] & 0x20) >> 5; | |
721 | p2 = (packet[0] & 0x10) >> 4; | |
722 | } else { | |
723 | /* byte 0: n1 n0 p2 p1 1 p3 R L */ | |
724 | p1 = (packet[0] & 0x10) >> 4; | |
725 | p2 = (packet[0] & 0x20) >> 5; | |
726 | } | |
727 | ||
728 | p3 = (packet[0] & 0x04) >> 2; | |
729 | ||
730 | return etd->parity[packet[1]] == p1 && | |
731 | etd->parity[packet[2]] == p2 && | |
732 | etd->parity[packet[3]] == p3; | |
733 | } | |
734 | ||
84a90b61 JD |
735 | static int elantech_debounce_check_v2(struct psmouse *psmouse) |
736 | { | |
737 | /* | |
738 | * When we encounter packet that matches this exactly, it means the | |
739 | * hardware is in debounce status. Just ignore the whole packet. | |
740 | */ | |
4f1b461d CIK |
741 | static const u8 debounce_packet[] = { |
742 | 0x84, 0xff, 0xff, 0x02, 0xff, 0xff | |
743 | }; | |
84a90b61 JD |
744 | unsigned char *packet = psmouse->packet; |
745 | ||
746 | return !memcmp(packet, debounce_packet, sizeof(debounce_packet)); | |
747 | } | |
748 | ||
7894f21b JD |
749 | static int elantech_packet_check_v2(struct psmouse *psmouse) |
750 | { | |
751 | struct elantech_data *etd = psmouse->private; | |
752 | unsigned char *packet = psmouse->packet; | |
753 | ||
754 | /* | |
755 | * V2 hardware has two flavors. Older ones that do not report pressure, | |
756 | * and newer ones that reports pressure and width. With newer ones, all | |
757 | * packets (1, 2, 3 finger touch) have the same constant bits. With | |
758 | * older ones, 1/3 finger touch packets and 2 finger touch packets | |
759 | * have different constant bits. | |
760 | * With all three cases, if the constant bits are not exactly what I | |
761 | * expected, I consider them invalid. | |
762 | */ | |
f0787592 | 763 | if (etd->info.reports_pressure) |
7894f21b JD |
764 | return (packet[0] & 0x0c) == 0x04 && |
765 | (packet[3] & 0x0f) == 0x02; | |
766 | ||
767 | if ((packet[0] & 0xc0) == 0x80) | |
768 | return (packet[0] & 0x0c) == 0x0c && | |
769 | (packet[3] & 0x0e) == 0x08; | |
770 | ||
771 | return (packet[0] & 0x3c) == 0x3c && | |
772 | (packet[1] & 0xf0) == 0x00 && | |
773 | (packet[3] & 0x3e) == 0x38 && | |
774 | (packet[4] & 0xf0) == 0x00; | |
775 | } | |
776 | ||
28f49616 JD |
777 | /* |
778 | * We check the constant bits to determine what packet type we get, | |
1dc6edec | 779 | * so packet checking is mandatory for v3 and later hardware. |
28f49616 JD |
780 | */ |
781 | static int elantech_packet_check_v3(struct psmouse *psmouse) | |
782 | { | |
acc0444b | 783 | struct elantech_data *etd = psmouse->private; |
4f1b461d CIK |
784 | static const u8 debounce_packet[] = { |
785 | 0xc4, 0xff, 0xff, 0x02, 0xff, 0xff | |
786 | }; | |
28f49616 JD |
787 | unsigned char *packet = psmouse->packet; |
788 | ||
789 | /* | |
790 | * check debounce first, it has the same signature in byte 0 | |
791 | * and byte 3 as PACKET_V3_HEAD. | |
792 | */ | |
793 | if (!memcmp(packet, debounce_packet, sizeof(debounce_packet))) | |
794 | return PACKET_DEBOUNCE; | |
795 | ||
acc0444b MD |
796 | /* |
797 | * If the hardware flag 'crc_enabled' is set the packets have | |
798 | * different signatures. | |
799 | */ | |
f0787592 | 800 | if (etd->info.crc_enabled) { |
acc0444b MD |
801 | if ((packet[3] & 0x09) == 0x08) |
802 | return PACKET_V3_HEAD; | |
803 | ||
804 | if ((packet[3] & 0x09) == 0x09) | |
805 | return PACKET_V3_TAIL; | |
806 | } else { | |
807 | if ((packet[0] & 0x0c) == 0x04 && (packet[3] & 0xcf) == 0x02) | |
808 | return PACKET_V3_HEAD; | |
28f49616 | 809 | |
acc0444b MD |
810 | if ((packet[0] & 0x0c) == 0x0c && (packet[3] & 0xce) == 0x0c) |
811 | return PACKET_V3_TAIL; | |
a2418fc4 UDB |
812 | if ((packet[3] & 0x0f) == 0x06) |
813 | return PACKET_TRACKPOINT; | |
acc0444b | 814 | } |
28f49616 JD |
815 | |
816 | return PACKET_UNKNOWN; | |
817 | } | |
818 | ||
1dc6edec JD |
819 | static int elantech_packet_check_v4(struct psmouse *psmouse) |
820 | { | |
acc0444b | 821 | struct elantech_data *etd = psmouse->private; |
1dc6edec | 822 | unsigned char *packet = psmouse->packet; |
9eebed7d | 823 | unsigned char packet_type = packet[3] & 0x03; |
6b30c73e | 824 | unsigned int ic_version; |
acc0444b MD |
825 | bool sanity_check; |
826 | ||
d0ab5478 | 827 | if (etd->tp_dev && (packet[3] & 0x0f) == 0x06) |
caeb0d37 UDB |
828 | return PACKET_TRACKPOINT; |
829 | ||
6b30c73e | 830 | /* This represents the version of IC body. */ |
f0787592 | 831 | ic_version = (etd->info.fw_version & 0x0f0000) >> 16; |
6b30c73e | 832 | |
acc0444b MD |
833 | /* |
834 | * Sanity check based on the constant bits of a packet. | |
835 | * The constant bits change depending on the value of | |
6b30c73e DL |
836 | * the hardware flag 'crc_enabled' and the version of |
837 | * the IC body, but are the same for every packet, | |
838 | * regardless of the type. | |
acc0444b | 839 | */ |
f0787592 | 840 | if (etd->info.crc_enabled) |
acc0444b | 841 | sanity_check = ((packet[3] & 0x08) == 0x00); |
f0787592 | 842 | else if (ic_version == 7 && etd->info.samples[1] == 0x2A) |
6b30c73e | 843 | sanity_check = ((packet[3] & 0x1c) == 0x10); |
acc0444b | 844 | else |
e0ae2519 | 845 | sanity_check = ((packet[0] & 0x08) == 0x00 && |
acc0444b MD |
846 | (packet[3] & 0x1c) == 0x10); |
847 | ||
848 | if (!sanity_check) | |
849 | return PACKET_UNKNOWN; | |
1dc6edec | 850 | |
9eebed7d MD |
851 | switch (packet_type) { |
852 | case 0: | |
853 | return PACKET_V4_STATUS; | |
854 | ||
855 | case 1: | |
1dc6edec JD |
856 | return PACKET_V4_HEAD; |
857 | ||
9eebed7d | 858 | case 2: |
1dc6edec | 859 | return PACKET_V4_MOTION; |
9eebed7d | 860 | } |
1dc6edec JD |
861 | |
862 | return PACKET_UNKNOWN; | |
863 | } | |
864 | ||
2a0bd75e AO |
865 | /* |
866 | * Process byte stream from mouse and handle complete packets | |
867 | */ | |
868 | static psmouse_ret_t elantech_process_byte(struct psmouse *psmouse) | |
869 | { | |
870 | struct elantech_data *etd = psmouse->private; | |
28f49616 | 871 | int packet_type; |
2a0bd75e AO |
872 | |
873 | if (psmouse->pktcnt < psmouse->pktsize) | |
874 | return PSMOUSE_GOOD_DATA; | |
875 | ||
f0787592 | 876 | if (etd->info.debug > 1) |
b5d21704 | 877 | elantech_packet_dump(psmouse); |
2a0bd75e | 878 | |
f0787592 | 879 | switch (etd->info.hw_version) { |
2a0bd75e | 880 | case 1: |
f0787592 | 881 | if (etd->info.paritycheck && !elantech_packet_check_v1(psmouse)) |
2a0bd75e AO |
882 | return PSMOUSE_BAD_DATA; |
883 | ||
884 | elantech_report_absolute_v1(psmouse); | |
885 | break; | |
886 | ||
887 | case 2: | |
84a90b61 JD |
888 | /* ignore debounce */ |
889 | if (elantech_debounce_check_v2(psmouse)) | |
890 | return PSMOUSE_FULL_PACKET; | |
891 | ||
f0787592 | 892 | if (etd->info.paritycheck && !elantech_packet_check_v2(psmouse)) |
7894f21b JD |
893 | return PSMOUSE_BAD_DATA; |
894 | ||
2a0bd75e AO |
895 | elantech_report_absolute_v2(psmouse); |
896 | break; | |
28f49616 JD |
897 | |
898 | case 3: | |
899 | packet_type = elantech_packet_check_v3(psmouse); | |
a2418fc4 UDB |
900 | switch (packet_type) { |
901 | case PACKET_UNKNOWN: | |
28f49616 JD |
902 | return PSMOUSE_BAD_DATA; |
903 | ||
a2418fc4 UDB |
904 | case PACKET_DEBOUNCE: |
905 | /* ignore debounce */ | |
906 | break; | |
907 | ||
908 | case PACKET_TRACKPOINT: | |
909 | elantech_report_trackpoint(psmouse, packet_type); | |
910 | break; | |
911 | ||
912 | default: | |
913 | elantech_report_absolute_v3(psmouse, packet_type); | |
914 | break; | |
915 | } | |
916 | ||
28f49616 | 917 | break; |
1dc6edec JD |
918 | |
919 | case 4: | |
920 | packet_type = elantech_packet_check_v4(psmouse); | |
caeb0d37 UDB |
921 | switch (packet_type) { |
922 | case PACKET_UNKNOWN: | |
1dc6edec JD |
923 | return PSMOUSE_BAD_DATA; |
924 | ||
caeb0d37 UDB |
925 | case PACKET_TRACKPOINT: |
926 | elantech_report_trackpoint(psmouse, packet_type); | |
927 | break; | |
928 | ||
929 | default: | |
930 | elantech_report_absolute_v4(psmouse, packet_type); | |
931 | break; | |
932 | } | |
933 | ||
1dc6edec | 934 | break; |
2a0bd75e AO |
935 | } |
936 | ||
937 | return PSMOUSE_FULL_PACKET; | |
938 | } | |
939 | ||
bd884149 UDB |
940 | /* |
941 | * This writes the reg_07 value again to the hardware at the end of every | |
942 | * set_rate call because the register loses its value. reg_07 allows setting | |
943 | * absolute mode on v4 hardware | |
944 | */ | |
945 | static void elantech_set_rate_restore_reg_07(struct psmouse *psmouse, | |
946 | unsigned int rate) | |
947 | { | |
948 | struct elantech_data *etd = psmouse->private; | |
949 | ||
950 | etd->original_set_rate(psmouse, rate); | |
951 | if (elantech_write_reg(psmouse, 0x07, etd->reg_07)) | |
952 | psmouse_err(psmouse, "restoring reg_07 failed\n"); | |
953 | } | |
954 | ||
2a0bd75e AO |
955 | /* |
956 | * Put the touchpad into absolute mode | |
957 | */ | |
958 | static int elantech_set_absolute_mode(struct psmouse *psmouse) | |
959 | { | |
960 | struct elantech_data *etd = psmouse->private; | |
961 | unsigned char val; | |
962 | int tries = ETP_READ_BACK_TRIES; | |
963 | int rc = 0; | |
964 | ||
f0787592 | 965 | switch (etd->info.hw_version) { |
2a0bd75e AO |
966 | case 1: |
967 | etd->reg_10 = 0x16; | |
968 | etd->reg_11 = 0x8f; | |
969 | if (elantech_write_reg(psmouse, 0x10, etd->reg_10) || | |
970 | elantech_write_reg(psmouse, 0x11, etd->reg_11)) { | |
971 | rc = -1; | |
972 | } | |
973 | break; | |
974 | ||
975 | case 2: | |
976 | /* Windows driver values */ | |
977 | etd->reg_10 = 0x54; | |
978 | etd->reg_11 = 0x88; /* 0x8a */ | |
979 | etd->reg_21 = 0x60; /* 0x00 */ | |
980 | if (elantech_write_reg(psmouse, 0x10, etd->reg_10) || | |
981 | elantech_write_reg(psmouse, 0x11, etd->reg_11) || | |
982 | elantech_write_reg(psmouse, 0x21, etd->reg_21)) { | |
983 | rc = -1; | |
2a0bd75e | 984 | } |
28f49616 JD |
985 | break; |
986 | ||
987 | case 3: | |
f0787592 | 988 | if (etd->info.set_hw_resolution) |
36189cc3 HG |
989 | etd->reg_10 = 0x0b; |
990 | else | |
fb4f8f56 | 991 | etd->reg_10 = 0x01; |
36189cc3 | 992 | |
28f49616 JD |
993 | if (elantech_write_reg(psmouse, 0x10, etd->reg_10)) |
994 | rc = -1; | |
995 | ||
996 | break; | |
1dc6edec JD |
997 | |
998 | case 4: | |
999 | etd->reg_07 = 0x01; | |
1000 | if (elantech_write_reg(psmouse, 0x07, etd->reg_07)) | |
1001 | rc = -1; | |
1002 | ||
1003 | goto skip_readback_reg_10; /* v4 has no reg 0x10 to read */ | |
b2546df6 AO |
1004 | } |
1005 | ||
1006 | if (rc == 0) { | |
2a0bd75e | 1007 | /* |
b2546df6 AO |
1008 | * Read back reg 0x10. For hardware version 1 we must make |
1009 | * sure the absolute mode bit is set. For hardware version 2 | |
b5d21704 | 1010 | * the touchpad is probably initializing and not ready until |
b2546df6 | 1011 | * we read back the value we just wrote. |
2a0bd75e AO |
1012 | */ |
1013 | do { | |
1014 | rc = elantech_read_reg(psmouse, 0x10, &val); | |
1015 | if (rc == 0) | |
1016 | break; | |
1017 | tries--; | |
d4ae84a8 | 1018 | elantech_debug("retrying read (%d).\n", tries); |
2a0bd75e AO |
1019 | msleep(ETP_READ_BACK_DELAY); |
1020 | } while (tries > 0); | |
b2546df6 AO |
1021 | |
1022 | if (rc) { | |
b5d21704 DT |
1023 | psmouse_err(psmouse, |
1024 | "failed to read back register 0x10.\n"); | |
f0787592 | 1025 | } else if (etd->info.hw_version == 1 && |
b2546df6 | 1026 | !(val & ETP_R10_ABSOLUTE_MODE)) { |
b5d21704 DT |
1027 | psmouse_err(psmouse, |
1028 | "touchpad refuses to switch to absolute mode.\n"); | |
b2546df6 AO |
1029 | rc = -1; |
1030 | } | |
2a0bd75e AO |
1031 | } |
1032 | ||
1dc6edec | 1033 | skip_readback_reg_10: |
2a0bd75e | 1034 | if (rc) |
b5d21704 | 1035 | psmouse_err(psmouse, "failed to initialise registers.\n"); |
2a0bd75e AO |
1036 | |
1037 | return rc; | |
1038 | } | |
1039 | ||
3d95fd6a JD |
1040 | /* |
1041 | * (value from firmware) * 10 + 790 = dpi | |
1042 | * we also have to convert dpi to dots/mm (*10/254 to avoid floating point) | |
1043 | */ | |
1044 | static unsigned int elantech_convert_res(unsigned int val) | |
1045 | { | |
1046 | return (val * 10 + 790) * 10 / 254; | |
1047 | } | |
1048 | ||
1049 | static int elantech_get_resolution_v4(struct psmouse *psmouse, | |
1050 | unsigned int *x_res, | |
21c48dbd BT |
1051 | unsigned int *y_res, |
1052 | unsigned int *bus) | |
3d95fd6a JD |
1053 | { |
1054 | unsigned char param[3]; | |
1055 | ||
1056 | if (elantech_send_cmd(psmouse, ETP_RESOLUTION_QUERY, param)) | |
1057 | return -1; | |
1058 | ||
1059 | *x_res = elantech_convert_res(param[1] & 0x0f); | |
1060 | *y_res = elantech_convert_res((param[1] & 0xf0) >> 4); | |
21c48dbd | 1061 | *bus = param[2]; |
3d95fd6a JD |
1062 | |
1063 | return 0; | |
1064 | } | |
1065 | ||
c15bdfd5 HG |
1066 | static void elantech_set_buttonpad_prop(struct psmouse *psmouse) |
1067 | { | |
1068 | struct input_dev *dev = psmouse->dev; | |
1069 | struct elantech_data *etd = psmouse->private; | |
1070 | ||
88463497 | 1071 | if (elantech_is_buttonpad(&etd->info)) { |
c15bdfd5 HG |
1072 | __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); |
1073 | __clear_bit(BTN_RIGHT, dev->keybit); | |
1074 | } | |
1075 | } | |
1076 | ||
f386474e UDB |
1077 | /* |
1078 | * Some hw_version 4 models do have a middle button | |
1079 | */ | |
1080 | static const struct dmi_system_id elantech_dmi_has_middle_button[] = { | |
1081 | #if defined(CONFIG_DMI) && defined(CONFIG_X86) | |
1082 | { | |
1083 | /* Fujitsu H730 has a middle button */ | |
1084 | .matches = { | |
1085 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
1086 | DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H730"), | |
1087 | }, | |
1088 | }, | |
f9a703a5 MK |
1089 | { |
1090 | /* Fujitsu H760 also has a middle button */ | |
1091 | .matches = { | |
1092 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
1093 | DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H760"), | |
1094 | }, | |
1095 | }, | |
e8b22d0a MK |
1096 | { |
1097 | /* Fujitsu H780 also has a middle button */ | |
1098 | .matches = { | |
1099 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
1100 | DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H780"), | |
1101 | }, | |
1102 | }, | |
f386474e UDB |
1103 | #endif |
1104 | { } | |
1105 | }; | |
1106 | ||
2a0bd75e AO |
1107 | /* |
1108 | * Set the appropriate event bits for the input subsystem | |
1109 | */ | |
28f49616 | 1110 | static int elantech_set_input_params(struct psmouse *psmouse) |
2a0bd75e AO |
1111 | { |
1112 | struct input_dev *dev = psmouse->dev; | |
1113 | struct elantech_data *etd = psmouse->private; | |
f0787592 | 1114 | struct elantech_device_info *info = &etd->info; |
37548659 BT |
1115 | unsigned int x_min = info->x_min, y_min = info->y_min, |
1116 | x_max = info->x_max, y_max = info->y_max, | |
1117 | width = info->width; | |
2a0bd75e | 1118 | |
e3dde4fb | 1119 | __set_bit(INPUT_PROP_POINTER, dev->propbit); |
2a0bd75e AO |
1120 | __set_bit(EV_KEY, dev->evbit); |
1121 | __set_bit(EV_ABS, dev->evbit); | |
c7a1f3cc | 1122 | __clear_bit(EV_REL, dev->evbit); |
2a0bd75e AO |
1123 | |
1124 | __set_bit(BTN_LEFT, dev->keybit); | |
fd1cf11f | 1125 | if (info->has_middle_button) |
f386474e | 1126 | __set_bit(BTN_MIDDLE, dev->keybit); |
2a0bd75e AO |
1127 | __set_bit(BTN_RIGHT, dev->keybit); |
1128 | ||
1129 | __set_bit(BTN_TOUCH, dev->keybit); | |
1130 | __set_bit(BTN_TOOL_FINGER, dev->keybit); | |
1131 | __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); | |
1132 | __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit); | |
1133 | ||
f0787592 | 1134 | switch (info->hw_version) { |
2a0bd75e AO |
1135 | case 1: |
1136 | /* Rocker button */ | |
f0787592 BT |
1137 | if (info->fw_version < 0x020000 && |
1138 | (info->capabilities[0] & ETP_CAP_HAS_ROCKER)) { | |
2a0bd75e AO |
1139 | __set_bit(BTN_FORWARD, dev->keybit); |
1140 | __set_bit(BTN_BACK, dev->keybit); | |
1141 | } | |
230282a7 JD |
1142 | input_set_abs_params(dev, ABS_X, x_min, x_max, 0, 0); |
1143 | input_set_abs_params(dev, ABS_Y, y_min, y_max, 0, 0); | |
2a0bd75e AO |
1144 | break; |
1145 | ||
1146 | case 2: | |
22462d9f | 1147 | __set_bit(BTN_TOOL_QUADTAP, dev->keybit); |
28f49616 JD |
1148 | __set_bit(INPUT_PROP_SEMI_MT, dev->propbit); |
1149 | /* fall through */ | |
1150 | case 3: | |
f0787592 | 1151 | if (info->hw_version == 3) |
c15bdfd5 | 1152 | elantech_set_buttonpad_prop(psmouse); |
230282a7 JD |
1153 | input_set_abs_params(dev, ABS_X, x_min, x_max, 0, 0); |
1154 | input_set_abs_params(dev, ABS_Y, y_min, y_max, 0, 0); | |
f0787592 | 1155 | if (info->reports_pressure) { |
f941c705 ÉP |
1156 | input_set_abs_params(dev, ABS_PRESSURE, ETP_PMIN_V2, |
1157 | ETP_PMAX_V2, 0, 0); | |
1158 | input_set_abs_params(dev, ABS_TOOL_WIDTH, ETP_WMIN_V2, | |
1159 | ETP_WMAX_V2, 0, 0); | |
1160 | } | |
6544a1df | 1161 | input_mt_init_slots(dev, 2, INPUT_MT_SEMI_MT); |
230282a7 JD |
1162 | input_set_abs_params(dev, ABS_MT_POSITION_X, x_min, x_max, 0, 0); |
1163 | input_set_abs_params(dev, ABS_MT_POSITION_Y, y_min, y_max, 0, 0); | |
2a0bd75e | 1164 | break; |
1dc6edec JD |
1165 | |
1166 | case 4: | |
c15bdfd5 | 1167 | elantech_set_buttonpad_prop(psmouse); |
1dc6edec JD |
1168 | __set_bit(BTN_TOOL_QUADTAP, dev->keybit); |
1169 | /* For X to recognize me as touchpad. */ | |
1170 | input_set_abs_params(dev, ABS_X, x_min, x_max, 0, 0); | |
1171 | input_set_abs_params(dev, ABS_Y, y_min, y_max, 0, 0); | |
1172 | /* | |
1173 | * range of pressure and width is the same as v2, | |
1174 | * report ABS_PRESSURE, ABS_TOOL_WIDTH for compatibility. | |
1175 | */ | |
1176 | input_set_abs_params(dev, ABS_PRESSURE, ETP_PMIN_V2, | |
1177 | ETP_PMAX_V2, 0, 0); | |
1178 | input_set_abs_params(dev, ABS_TOOL_WIDTH, ETP_WMIN_V2, | |
1179 | ETP_WMAX_V2, 0, 0); | |
1180 | /* Multitouch capable pad, up to 5 fingers. */ | |
b4adbbef | 1181 | input_mt_init_slots(dev, ETP_MAX_FINGERS, 0); |
1dc6edec JD |
1182 | input_set_abs_params(dev, ABS_MT_POSITION_X, x_min, x_max, 0, 0); |
1183 | input_set_abs_params(dev, ABS_MT_POSITION_Y, y_min, y_max, 0, 0); | |
1184 | input_set_abs_params(dev, ABS_MT_PRESSURE, ETP_PMIN_V2, | |
1185 | ETP_PMAX_V2, 0, 0); | |
1186 | /* | |
1187 | * The firmware reports how many trace lines the finger spans, | |
1188 | * convert to surface unit as Protocol-B requires. | |
1189 | */ | |
1190 | input_set_abs_params(dev, ABS_MT_TOUCH_MAJOR, 0, | |
1191 | ETP_WMAX_V2 * width, 0, 0); | |
1192 | break; | |
2a0bd75e | 1193 | } |
230282a7 | 1194 | |
80212ed7 BT |
1195 | input_abs_set_res(dev, ABS_X, info->x_res); |
1196 | input_abs_set_res(dev, ABS_Y, info->y_res); | |
f0787592 | 1197 | if (info->hw_version > 1) { |
80212ed7 BT |
1198 | input_abs_set_res(dev, ABS_MT_POSITION_X, info->x_res); |
1199 | input_abs_set_res(dev, ABS_MT_POSITION_Y, info->y_res); | |
d98399e6 PH |
1200 | } |
1201 | ||
230282a7 | 1202 | etd->y_max = y_max; |
1dc6edec | 1203 | etd->width = width; |
28f49616 JD |
1204 | |
1205 | return 0; | |
2a0bd75e AO |
1206 | } |
1207 | ||
1208 | struct elantech_attr_data { | |
1209 | size_t field_offset; | |
1210 | unsigned char reg; | |
1211 | }; | |
1212 | ||
1213 | /* | |
1214 | * Display a register value by reading a sysfs entry | |
1215 | */ | |
1216 | static ssize_t elantech_show_int_attr(struct psmouse *psmouse, void *data, | |
1217 | char *buf) | |
1218 | { | |
1219 | struct elantech_data *etd = psmouse->private; | |
1220 | struct elantech_attr_data *attr = data; | |
1221 | unsigned char *reg = (unsigned char *) etd + attr->field_offset; | |
1222 | int rc = 0; | |
1223 | ||
1224 | if (attr->reg) | |
1225 | rc = elantech_read_reg(psmouse, attr->reg, reg); | |
1226 | ||
1227 | return sprintf(buf, "0x%02x\n", (attr->reg && rc) ? -1 : *reg); | |
1228 | } | |
1229 | ||
1230 | /* | |
1231 | * Write a register value by writing a sysfs entry | |
1232 | */ | |
1233 | static ssize_t elantech_set_int_attr(struct psmouse *psmouse, | |
1234 | void *data, const char *buf, size_t count) | |
1235 | { | |
1236 | struct elantech_data *etd = psmouse->private; | |
1237 | struct elantech_attr_data *attr = data; | |
1238 | unsigned char *reg = (unsigned char *) etd + attr->field_offset; | |
76496e7a | 1239 | unsigned char value; |
2a0bd75e AO |
1240 | int err; |
1241 | ||
76496e7a | 1242 | err = kstrtou8(buf, 16, &value); |
2a0bd75e AO |
1243 | if (err) |
1244 | return err; | |
1245 | ||
2a0bd75e | 1246 | /* Do we need to preserve some bits for version 2 hardware too? */ |
f0787592 | 1247 | if (etd->info.hw_version == 1) { |
2a0bd75e AO |
1248 | if (attr->reg == 0x10) |
1249 | /* Force absolute mode always on */ | |
1250 | value |= ETP_R10_ABSOLUTE_MODE; | |
1251 | else if (attr->reg == 0x11) | |
1252 | /* Force 4 byte mode always on */ | |
1253 | value |= ETP_R11_4_BYTE_MODE; | |
1254 | } | |
1255 | ||
1256 | if (!attr->reg || elantech_write_reg(psmouse, attr->reg, value) == 0) | |
1257 | *reg = value; | |
1258 | ||
1259 | return count; | |
1260 | } | |
1261 | ||
1262 | #define ELANTECH_INT_ATTR(_name, _register) \ | |
1263 | static struct elantech_attr_data elantech_attr_##_name = { \ | |
1264 | .field_offset = offsetof(struct elantech_data, _name), \ | |
1265 | .reg = _register, \ | |
1266 | }; \ | |
f0787592 | 1267 | PSMOUSE_DEFINE_ATTR(_name, 0644, \ |
2a0bd75e AO |
1268 | &elantech_attr_##_name, \ |
1269 | elantech_show_int_attr, \ | |
1270 | elantech_set_int_attr) | |
1271 | ||
f0787592 BT |
1272 | #define ELANTECH_INFO_ATTR(_name) \ |
1273 | static struct elantech_attr_data elantech_attr_##_name = { \ | |
1274 | .field_offset = offsetof(struct elantech_data, info) + \ | |
1275 | offsetof(struct elantech_device_info, _name), \ | |
1276 | .reg = 0, \ | |
1277 | }; \ | |
1278 | PSMOUSE_DEFINE_ATTR(_name, 0644, \ | |
1279 | &elantech_attr_##_name, \ | |
1280 | elantech_show_int_attr, \ | |
1281 | elantech_set_int_attr) | |
1282 | ||
1dc6edec | 1283 | ELANTECH_INT_ATTR(reg_07, 0x07); |
2a0bd75e AO |
1284 | ELANTECH_INT_ATTR(reg_10, 0x10); |
1285 | ELANTECH_INT_ATTR(reg_11, 0x11); | |
1286 | ELANTECH_INT_ATTR(reg_20, 0x20); | |
1287 | ELANTECH_INT_ATTR(reg_21, 0x21); | |
1288 | ELANTECH_INT_ATTR(reg_22, 0x22); | |
1289 | ELANTECH_INT_ATTR(reg_23, 0x23); | |
1290 | ELANTECH_INT_ATTR(reg_24, 0x24); | |
1291 | ELANTECH_INT_ATTR(reg_25, 0x25); | |
1292 | ELANTECH_INT_ATTR(reg_26, 0x26); | |
f0787592 BT |
1293 | ELANTECH_INFO_ATTR(debug); |
1294 | ELANTECH_INFO_ATTR(paritycheck); | |
1295 | ELANTECH_INFO_ATTR(crc_enabled); | |
2a0bd75e AO |
1296 | |
1297 | static struct attribute *elantech_attrs[] = { | |
1dc6edec | 1298 | &psmouse_attr_reg_07.dattr.attr, |
2a0bd75e AO |
1299 | &psmouse_attr_reg_10.dattr.attr, |
1300 | &psmouse_attr_reg_11.dattr.attr, | |
1301 | &psmouse_attr_reg_20.dattr.attr, | |
1302 | &psmouse_attr_reg_21.dattr.attr, | |
1303 | &psmouse_attr_reg_22.dattr.attr, | |
1304 | &psmouse_attr_reg_23.dattr.attr, | |
1305 | &psmouse_attr_reg_24.dattr.attr, | |
1306 | &psmouse_attr_reg_25.dattr.attr, | |
1307 | &psmouse_attr_reg_26.dattr.attr, | |
1308 | &psmouse_attr_debug.dattr.attr, | |
1309 | &psmouse_attr_paritycheck.dattr.attr, | |
2d9eb81f | 1310 | &psmouse_attr_crc_enabled.dattr.attr, |
2a0bd75e AO |
1311 | NULL |
1312 | }; | |
1313 | ||
57999433 | 1314 | static const struct attribute_group elantech_attr_group = { |
2a0bd75e AO |
1315 | .attrs = elantech_attrs, |
1316 | }; | |
1317 | ||
a083632e DT |
1318 | static bool elantech_is_signature_valid(const unsigned char *param) |
1319 | { | |
1320 | static const unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10 }; | |
1321 | int i; | |
1322 | ||
1323 | if (param[0] == 0) | |
1324 | return false; | |
1325 | ||
1326 | if (param[1] == 0) | |
1327 | return true; | |
1328 | ||
271329b3 | 1329 | /* |
5f0ee9d1 HG |
1330 | * Some hw_version >= 4 models have a revision higher then 20. Meaning |
1331 | * that param[2] may be 10 or 20, skip the rates check for these. | |
271329b3 | 1332 | */ |
5f0ee9d1 HG |
1333 | if ((param[0] & 0x0f) >= 0x06 && (param[1] & 0xaf) == 0x0f && |
1334 | param[2] < 40) | |
271329b3 HG |
1335 | return true; |
1336 | ||
a083632e DT |
1337 | for (i = 0; i < ARRAY_SIZE(rates); i++) |
1338 | if (param[2] == rates[i]) | |
1339 | return false; | |
1340 | ||
1341 | return true; | |
1342 | } | |
1343 | ||
2a0bd75e AO |
1344 | /* |
1345 | * Use magic knock to detect Elantech touchpad | |
1346 | */ | |
b7802c5c | 1347 | int elantech_detect(struct psmouse *psmouse, bool set_properties) |
2a0bd75e AO |
1348 | { |
1349 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
1350 | unsigned char param[3]; | |
1351 | ||
ad56814f | 1352 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); |
2a0bd75e AO |
1353 | |
1354 | if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || | |
1355 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || | |
1356 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || | |
1357 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || | |
1358 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) { | |
b5d21704 | 1359 | psmouse_dbg(psmouse, "sending Elantech magic knock failed.\n"); |
2a0bd75e AO |
1360 | return -1; |
1361 | } | |
1362 | ||
1363 | /* | |
1364 | * Report this in case there are Elantech models that use a different | |
1365 | * set of magic numbers | |
1366 | */ | |
28f49616 JD |
1367 | if (param[0] != 0x3c || param[1] != 0x03 || |
1368 | (param[2] != 0xc8 && param[2] != 0x00)) { | |
b5d21704 DT |
1369 | psmouse_dbg(psmouse, |
1370 | "unexpected magic knock result 0x%02x, 0x%02x, 0x%02x.\n", | |
1371 | param[0], param[1], param[2]); | |
9ab7b25e AO |
1372 | return -1; |
1373 | } | |
1374 | ||
1375 | /* | |
1376 | * Query touchpad's firmware version and see if it reports known | |
1377 | * value to avoid mis-detection. Logitech mice are known to respond | |
1378 | * to Elantech magic knock and there might be more. | |
1379 | */ | |
1380 | if (synaptics_send_cmd(psmouse, ETP_FW_VERSION_QUERY, param)) { | |
b5d21704 | 1381 | psmouse_dbg(psmouse, "failed to query firmware version.\n"); |
9ab7b25e AO |
1382 | return -1; |
1383 | } | |
1384 | ||
b5d21704 DT |
1385 | psmouse_dbg(psmouse, |
1386 | "Elantech version query result 0x%02x, 0x%02x, 0x%02x.\n", | |
1387 | param[0], param[1], param[2]); | |
9ab7b25e | 1388 | |
a083632e | 1389 | if (!elantech_is_signature_valid(param)) { |
b5d21704 DT |
1390 | psmouse_dbg(psmouse, |
1391 | "Probably not a real Elantech touchpad. Aborting.\n"); | |
4af61e90 | 1392 | return -1; |
2a0bd75e AO |
1393 | } |
1394 | ||
1395 | if (set_properties) { | |
1396 | psmouse->vendor = "Elantech"; | |
1397 | psmouse->name = "Touchpad"; | |
1398 | } | |
1399 | ||
1400 | return 0; | |
1401 | } | |
1402 | ||
1403 | /* | |
1404 | * Clean up sysfs entries when disconnecting | |
1405 | */ | |
1406 | static void elantech_disconnect(struct psmouse *psmouse) | |
1407 | { | |
a2418fc4 UDB |
1408 | struct elantech_data *etd = psmouse->private; |
1409 | ||
21c48dbd BT |
1410 | /* |
1411 | * We might have left a breadcrumb when trying to | |
1412 | * set up SMbus companion. | |
1413 | */ | |
1414 | psmouse_smbus_cleanup(psmouse); | |
1415 | ||
a2418fc4 UDB |
1416 | if (etd->tp_dev) |
1417 | input_unregister_device(etd->tp_dev); | |
2a0bd75e AO |
1418 | sysfs_remove_group(&psmouse->ps2dev.serio->dev.kobj, |
1419 | &elantech_attr_group); | |
1420 | kfree(psmouse->private); | |
1421 | psmouse->private = NULL; | |
1422 | } | |
1423 | ||
1424 | /* | |
1425 | * Put the touchpad back into absolute mode when reconnecting | |
1426 | */ | |
1427 | static int elantech_reconnect(struct psmouse *psmouse) | |
1428 | { | |
a67ada7a JD |
1429 | psmouse_reset(psmouse); |
1430 | ||
2a0bd75e AO |
1431 | if (elantech_detect(psmouse, 0)) |
1432 | return -1; | |
1433 | ||
1434 | if (elantech_set_absolute_mode(psmouse)) { | |
b5d21704 DT |
1435 | psmouse_err(psmouse, |
1436 | "failed to put touchpad back into absolute mode.\n"); | |
2a0bd75e AO |
1437 | return -1; |
1438 | } | |
1439 | ||
1440 | return 0; | |
1441 | } | |
1442 | ||
0dc15879 UDB |
1443 | /* |
1444 | * Some hw_version 4 models do not work with crc_disabled | |
1445 | */ | |
1446 | static const struct dmi_system_id elantech_dmi_force_crc_enabled[] = { | |
1447 | #if defined(CONFIG_DMI) && defined(CONFIG_X86) | |
1448 | { | |
1449 | /* Fujitsu H730 does not work with crc_enabled == 0 */ | |
1450 | .matches = { | |
1451 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
1452 | DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H730"), | |
1453 | }, | |
1454 | }, | |
f9a703a5 MK |
1455 | { |
1456 | /* Fujitsu H760 does not work with crc_enabled == 0 */ | |
1457 | .matches = { | |
1458 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
1459 | DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H760"), | |
1460 | }, | |
1461 | }, | |
62837b3c DT |
1462 | { |
1463 | /* Fujitsu LIFEBOOK E544 does not work with crc_enabled == 0 */ | |
1464 | .matches = { | |
1465 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
1466 | DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E544"), | |
1467 | }, | |
1468 | }, | |
47eb0c8b UDB |
1469 | { |
1470 | /* Fujitsu LIFEBOOK E546 does not work with crc_enabled == 0 */ | |
1471 | .matches = { | |
1472 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
1473 | DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E546"), | |
1474 | }, | |
1475 | }, | |
704de489 TL |
1476 | { |
1477 | /* Fujitsu LIFEBOOK E547 does not work with crc_enabled == 0 */ | |
1478 | .matches = { | |
1479 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
1480 | DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E547"), | |
1481 | }, | |
1482 | }, | |
47c1ffb2 RK |
1483 | { |
1484 | /* Fujitsu LIFEBOOK E554 does not work with crc_enabled == 0 */ | |
1485 | .matches = { | |
1486 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
1487 | DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E554"), | |
1488 | }, | |
1489 | }, | |
1490 | { | |
62837b3c | 1491 | /* Fujitsu LIFEBOOK E556 does not work with crc_enabled == 0 */ |
47c1ffb2 RK |
1492 | .matches = { |
1493 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
62837b3c | 1494 | DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E556"), |
47c1ffb2 RK |
1495 | }, |
1496 | }, | |
47eb0c8b UDB |
1497 | { |
1498 | /* Fujitsu LIFEBOOK E557 does not work with crc_enabled == 0 */ | |
1499 | .matches = { | |
1500 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
1501 | DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E557"), | |
1502 | }, | |
1503 | }, | |
60603950 TI |
1504 | { |
1505 | /* Fujitsu LIFEBOOK U745 does not work with crc_enabled == 0 */ | |
1506 | .matches = { | |
1507 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), | |
1508 | DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK U745"), | |
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 | */ | |
f0787592 | 1535 | static int elantech_set_properties(struct elantech_device_info *info) |
3c8bbb95 | 1536 | { |
3940d618 | 1537 | /* This represents the version of IC body. */ |
f0787592 | 1538 | int ver = (info->fw_version & 0x0f0000) >> 16; |
1dc6edec | 1539 | |
3940d618 | 1540 | /* Early version of Elan touchpads doesn't obey the rule. */ |
f0787592 BT |
1541 | if (info->fw_version < 0x020030 || info->fw_version == 0x020600) |
1542 | info->hw_version = 1; | |
3940d618 JD |
1543 | else { |
1544 | switch (ver) { | |
1545 | case 2: | |
1546 | case 4: | |
f0787592 | 1547 | info->hw_version = 2; |
3940d618 JD |
1548 | break; |
1549 | case 5: | |
f0787592 | 1550 | info->hw_version = 3; |
3940d618 | 1551 | break; |
10d90030 | 1552 | case 6 ... 15: |
f0787592 | 1553 | info->hw_version = 4; |
3940d618 JD |
1554 | break; |
1555 | default: | |
1556 | return -1; | |
1557 | } | |
1558 | } | |
3c8bbb95 | 1559 | |
b56b92a9 | 1560 | /* decide which send_cmd we're gonna use early */ |
f0787592 BT |
1561 | info->send_cmd = info->hw_version >= 3 ? elantech_send_cmd : |
1562 | synaptics_send_cmd; | |
b56b92a9 JD |
1563 | |
1564 | /* Turn on packet checking by default */ | |
f0787592 | 1565 | info->paritycheck = 1; |
3c8bbb95 JD |
1566 | |
1567 | /* | |
1568 | * This firmware suffers from misreporting coordinates when | |
1569 | * a touch action starts causing the mouse cursor or scrolled page | |
1570 | * to jump. Enable a workaround. | |
1571 | */ | |
f0787592 BT |
1572 | info->jumpy_cursor = |
1573 | (info->fw_version == 0x020022 || info->fw_version == 0x020600); | |
3c8bbb95 | 1574 | |
f0787592 | 1575 | if (info->hw_version > 1) { |
3c8bbb95 | 1576 | /* For now show extra debug information */ |
f0787592 | 1577 | info->debug = 1; |
3c8bbb95 | 1578 | |
f0787592 BT |
1579 | if (info->fw_version >= 0x020800) |
1580 | info->reports_pressure = true; | |
3c8bbb95 | 1581 | } |
28f49616 | 1582 | |
acc0444b MD |
1583 | /* |
1584 | * The signatures of v3 and v4 packets change depending on the | |
1585 | * value of this hardware flag. | |
1586 | */ | |
f0787592 BT |
1587 | info->crc_enabled = (info->fw_version & 0x4000) == 0x4000 || |
1588 | dmi_check_system(elantech_dmi_force_crc_enabled); | |
acc0444b | 1589 | |
36189cc3 | 1590 | /* Enable real hardware resolution on hw_version 3 ? */ |
f0787592 | 1591 | info->set_hw_resolution = !dmi_check_system(no_hw_res_dmi_table); |
36189cc3 | 1592 | |
28f49616 | 1593 | return 0; |
3c8bbb95 JD |
1594 | } |
1595 | ||
f0787592 BT |
1596 | static int elantech_query_info(struct psmouse *psmouse, |
1597 | struct elantech_device_info *info) | |
2a0bd75e | 1598 | { |
2a0bd75e | 1599 | unsigned char param[3]; |
37548659 | 1600 | unsigned char traces; |
2a0bd75e | 1601 | |
21c48dbd BT |
1602 | memset(info, 0, sizeof(*info)); |
1603 | ||
2a0bd75e | 1604 | /* |
9ab7b25e | 1605 | * Do the version query again so we can store the result |
2a0bd75e AO |
1606 | */ |
1607 | if (synaptics_send_cmd(psmouse, ETP_FW_VERSION_QUERY, param)) { | |
b5d21704 | 1608 | psmouse_err(psmouse, "failed to query firmware version.\n"); |
f0787592 | 1609 | return -EINVAL; |
2a0bd75e | 1610 | } |
f0787592 | 1611 | info->fw_version = (param[0] << 16) | (param[1] << 8) | param[2]; |
28f49616 | 1612 | |
f0787592 | 1613 | if (elantech_set_properties(info)) { |
b5d21704 | 1614 | psmouse_err(psmouse, "unknown hardware version, aborting...\n"); |
f0787592 | 1615 | return -EINVAL; |
28f49616 | 1616 | } |
b5d21704 DT |
1617 | psmouse_info(psmouse, |
1618 | "assuming hardware version %d (with firmware version 0x%02x%02x%02x)\n", | |
f0787592 | 1619 | info->hw_version, param[0], param[1], param[2]); |
2a0bd75e | 1620 | |
f0787592 BT |
1621 | if (info->send_cmd(psmouse, ETP_CAPABILITIES_QUERY, |
1622 | info->capabilities)) { | |
b5d21704 | 1623 | psmouse_err(psmouse, "failed to query capabilities.\n"); |
f0787592 | 1624 | return -EINVAL; |
2a0bd75e | 1625 | } |
b5d21704 DT |
1626 | psmouse_info(psmouse, |
1627 | "Synaptics capabilities query result 0x%02x, 0x%02x, 0x%02x.\n", | |
f0787592 BT |
1628 | info->capabilities[0], info->capabilities[1], |
1629 | info->capabilities[2]); | |
2a0bd75e | 1630 | |
f0787592 BT |
1631 | if (info->hw_version != 1) { |
1632 | if (info->send_cmd(psmouse, ETP_SAMPLE_QUERY, info->samples)) { | |
6b30c73e | 1633 | psmouse_err(psmouse, "failed to query sample data\n"); |
f0787592 | 1634 | return -EINVAL; |
6b30c73e DL |
1635 | } |
1636 | psmouse_info(psmouse, | |
1637 | "Elan sample query result %02x, %02x, %02x\n", | |
f0787592 BT |
1638 | info->samples[0], |
1639 | info->samples[1], | |
1640 | info->samples[2]); | |
6b30c73e DL |
1641 | } |
1642 | ||
f0787592 | 1643 | if (info->samples[1] == 0x74 && info->hw_version == 0x03) { |
d899520b KL |
1644 | /* |
1645 | * This module has a bug which makes absolute mode | |
1646 | * unusable, so let's abort so we'll be using standard | |
1647 | * PS/2 protocol. | |
1648 | */ | |
1649 | psmouse_info(psmouse, | |
1650 | "absolute mode broken, forcing standard PS/2 protocol\n"); | |
f0787592 | 1651 | return -ENODEV; |
d899520b KL |
1652 | } |
1653 | ||
f0787592 BT |
1654 | /* The MSB indicates the presence of the trackpoint */ |
1655 | info->has_trackpoint = (info->capabilities[0] & 0x80) == 0x80; | |
1656 | ||
80212ed7 BT |
1657 | info->x_res = 31; |
1658 | info->y_res = 31; | |
1659 | if (info->hw_version == 4) { | |
1660 | if (elantech_get_resolution_v4(psmouse, | |
1661 | &info->x_res, | |
21c48dbd BT |
1662 | &info->y_res, |
1663 | &info->bus)) { | |
80212ed7 BT |
1664 | psmouse_warn(psmouse, |
1665 | "failed to query resolution data.\n"); | |
1666 | } | |
1667 | } | |
1668 | ||
37548659 BT |
1669 | /* query range information */ |
1670 | switch (info->hw_version) { | |
1671 | case 1: | |
1672 | info->x_min = ETP_XMIN_V1; | |
1673 | info->y_min = ETP_YMIN_V1; | |
1674 | info->x_max = ETP_XMAX_V1; | |
1675 | info->y_max = ETP_YMAX_V1; | |
1676 | break; | |
1677 | ||
1678 | case 2: | |
1679 | if (info->fw_version == 0x020800 || | |
1680 | info->fw_version == 0x020b00 || | |
1681 | info->fw_version == 0x020030) { | |
1682 | info->x_min = ETP_XMIN_V2; | |
1683 | info->y_min = ETP_YMIN_V2; | |
1684 | info->x_max = ETP_XMAX_V2; | |
1685 | info->y_max = ETP_YMAX_V2; | |
1686 | } else { | |
1687 | int i; | |
1688 | int fixed_dpi; | |
1689 | ||
1690 | i = (info->fw_version > 0x020800 && | |
1691 | info->fw_version < 0x020900) ? 1 : 2; | |
1692 | ||
1693 | if (info->send_cmd(psmouse, ETP_FW_ID_QUERY, param)) | |
1694 | return -EINVAL; | |
1695 | ||
1696 | fixed_dpi = param[1] & 0x10; | |
1697 | ||
1698 | if (((info->fw_version >> 16) == 0x14) && fixed_dpi) { | |
1699 | if (info->send_cmd(psmouse, ETP_SAMPLE_QUERY, param)) | |
1700 | return -EINVAL; | |
1701 | ||
1702 | info->x_max = (info->capabilities[1] - i) * param[1] / 2; | |
1703 | info->y_max = (info->capabilities[2] - i) * param[2] / 2; | |
1704 | } else if (info->fw_version == 0x040216) { | |
1705 | info->x_max = 819; | |
1706 | info->y_max = 405; | |
1707 | } else if (info->fw_version == 0x040219 || info->fw_version == 0x040215) { | |
1708 | info->x_max = 900; | |
1709 | info->y_max = 500; | |
1710 | } else { | |
1711 | info->x_max = (info->capabilities[1] - i) * 64; | |
1712 | info->y_max = (info->capabilities[2] - i) * 64; | |
1713 | } | |
1714 | } | |
1715 | break; | |
1716 | ||
1717 | case 3: | |
1718 | if (info->send_cmd(psmouse, ETP_FW_ID_QUERY, param)) | |
1719 | return -EINVAL; | |
1720 | ||
1721 | info->x_max = (0x0f & param[0]) << 8 | param[1]; | |
1722 | info->y_max = (0xf0 & param[0]) << 4 | param[2]; | |
1723 | break; | |
1724 | ||
1725 | case 4: | |
1726 | if (info->send_cmd(psmouse, ETP_FW_ID_QUERY, param)) | |
1727 | return -EINVAL; | |
1728 | ||
1729 | info->x_max = (0x0f & param[0]) << 8 | param[1]; | |
1730 | info->y_max = (0xf0 & param[0]) << 4 | param[2]; | |
1731 | traces = info->capabilities[1]; | |
1732 | if ((traces < 2) || (traces > info->x_max)) | |
1733 | return -EINVAL; | |
1734 | ||
1735 | info->width = info->x_max / (traces - 1); | |
3abcc532 BT |
1736 | |
1737 | /* column number of traces */ | |
1738 | info->x_traces = traces; | |
1739 | ||
1740 | /* row number of traces */ | |
1741 | traces = info->capabilities[2]; | |
1742 | if ((traces >= 2) && (traces <= info->y_max)) | |
1743 | info->y_traces = traces; | |
1744 | ||
37548659 BT |
1745 | break; |
1746 | } | |
1747 | ||
fd1cf11f BT |
1748 | /* check for the middle button: DMI matching or new v4 firmwares */ |
1749 | info->has_middle_button = dmi_check_system(elantech_dmi_has_middle_button) || | |
1750 | (ETP_NEW_IC_SMBUS_HOST_NOTIFY(info->fw_version) && | |
1751 | !elantech_is_buttonpad(info)); | |
1752 | ||
f0787592 BT |
1753 | return 0; |
1754 | } | |
1755 | ||
21c48dbd BT |
1756 | #if defined(CONFIG_MOUSE_PS2_ELANTECH_SMBUS) |
1757 | ||
1758 | /* | |
1759 | * The newest Elantech device can use a secondary bus (over SMBus) which | |
1760 | * provides a better bandwidth and allow a better control of the touchpads. | |
1761 | * This is used to decide if we need to use this bus or not. | |
1762 | */ | |
1763 | enum { | |
1764 | ELANTECH_SMBUS_NOT_SET = -1, | |
1765 | ELANTECH_SMBUS_OFF, | |
1766 | ELANTECH_SMBUS_ON, | |
1767 | }; | |
1768 | ||
1769 | static int elantech_smbus = IS_ENABLED(CONFIG_MOUSE_ELAN_I2C_SMBUS) ? | |
1770 | ELANTECH_SMBUS_NOT_SET : ELANTECH_SMBUS_OFF; | |
1771 | module_param_named(elantech_smbus, elantech_smbus, int, 0644); | |
1772 | MODULE_PARM_DESC(elantech_smbus, "Use a secondary bus for the Elantech device."); | |
1773 | ||
d21ff5d7 BT |
1774 | static const char * const i2c_blacklist_pnp_ids[] = { |
1775 | /* | |
1776 | * These are known to not be working properly as bits are missing | |
1777 | * in elan_i2c. | |
1778 | */ | |
d21ff5d7 BT |
1779 | NULL |
1780 | }; | |
1781 | ||
21c48dbd BT |
1782 | static int elantech_create_smbus(struct psmouse *psmouse, |
1783 | struct elantech_device_info *info, | |
1784 | bool leave_breadcrumbs) | |
1785 | { | |
3abcc532 | 1786 | struct property_entry i2c_props[11] = {}; |
21c48dbd BT |
1787 | struct i2c_board_info smbus_board = { |
1788 | I2C_BOARD_INFO("elan_i2c", 0x15), | |
1789 | .flags = I2C_CLIENT_HOST_NOTIFY, | |
1790 | }; | |
3abcc532 BT |
1791 | unsigned int idx = 0; |
1792 | ||
1793 | smbus_board.properties = i2c_props; | |
1794 | ||
1795 | i2c_props[idx++] = PROPERTY_ENTRY_U32("touchscreen-size-x", | |
1796 | info->x_max + 1); | |
1797 | i2c_props[idx++] = PROPERTY_ENTRY_U32("touchscreen-size-y", | |
1798 | info->y_max + 1); | |
1799 | i2c_props[idx++] = PROPERTY_ENTRY_U32("touchscreen-min-x", | |
1800 | info->x_min); | |
1801 | i2c_props[idx++] = PROPERTY_ENTRY_U32("touchscreen-min-y", | |
1802 | info->y_min); | |
1803 | if (info->x_res) | |
1804 | i2c_props[idx++] = PROPERTY_ENTRY_U32("touchscreen-x-mm", | |
1805 | (info->x_max + 1) / info->x_res); | |
1806 | if (info->y_res) | |
1807 | i2c_props[idx++] = PROPERTY_ENTRY_U32("touchscreen-y-mm", | |
1808 | (info->y_max + 1) / info->y_res); | |
21c48dbd BT |
1809 | |
1810 | if (info->has_trackpoint) | |
3abcc532 BT |
1811 | i2c_props[idx++] = PROPERTY_ENTRY_BOOL("elan,trackpoint"); |
1812 | ||
1813 | if (info->has_middle_button) | |
1814 | i2c_props[idx++] = PROPERTY_ENTRY_BOOL("elan,middle-button"); | |
1815 | ||
1816 | if (info->x_traces) | |
1817 | i2c_props[idx++] = PROPERTY_ENTRY_U32("elan,x_traces", | |
1818 | info->x_traces); | |
1819 | if (info->y_traces) | |
1820 | i2c_props[idx++] = PROPERTY_ENTRY_U32("elan,y_traces", | |
1821 | info->y_traces); | |
1822 | ||
1823 | if (elantech_is_buttonpad(info)) | |
1824 | i2c_props[idx++] = PROPERTY_ENTRY_BOOL("elan,clickpad"); | |
21c48dbd | 1825 | |
bf232e46 | 1826 | return psmouse_smbus_init(psmouse, &smbus_board, NULL, 0, false, |
21c48dbd BT |
1827 | leave_breadcrumbs); |
1828 | } | |
1829 | ||
1830 | /** | |
1831 | * elantech_setup_smbus - called once the PS/2 devices are enumerated | |
1832 | * and decides to instantiate a SMBus InterTouch device. | |
1833 | */ | |
1834 | static int elantech_setup_smbus(struct psmouse *psmouse, | |
1835 | struct elantech_device_info *info, | |
1836 | bool leave_breadcrumbs) | |
1837 | { | |
1838 | int error; | |
1839 | ||
1840 | if (elantech_smbus == ELANTECH_SMBUS_OFF) | |
1841 | return -ENXIO; | |
1842 | ||
1843 | if (elantech_smbus == ELANTECH_SMBUS_NOT_SET) { | |
1844 | /* | |
d21ff5d7 BT |
1845 | * New ICs are enabled by default, unless mentioned in |
1846 | * i2c_blacklist_pnp_ids. | |
df077237 | 1847 | * Old ICs are up to the user to decide. |
21c48dbd | 1848 | */ |
d21ff5d7 BT |
1849 | if (!ETP_NEW_IC_SMBUS_HOST_NOTIFY(info->fw_version) || |
1850 | psmouse_matches_pnp_id(psmouse, i2c_blacklist_pnp_ids)) | |
df077237 | 1851 | return -ENXIO; |
21c48dbd BT |
1852 | } |
1853 | ||
1854 | psmouse_info(psmouse, "Trying to set up SMBus access\n"); | |
1855 | ||
1856 | error = elantech_create_smbus(psmouse, info, leave_breadcrumbs); | |
1857 | if (error) { | |
1858 | if (error == -EAGAIN) | |
1859 | psmouse_info(psmouse, "SMbus companion is not ready yet\n"); | |
1860 | else | |
1861 | psmouse_err(psmouse, "unable to create intertouch device\n"); | |
1862 | ||
1863 | return error; | |
1864 | } | |
1865 | ||
1866 | return 0; | |
1867 | } | |
1868 | ||
1869 | static bool elantech_use_host_notify(struct psmouse *psmouse, | |
1870 | struct elantech_device_info *info) | |
1871 | { | |
df077237 BT |
1872 | if (ETP_NEW_IC_SMBUS_HOST_NOTIFY(info->fw_version)) |
1873 | return true; | |
1874 | ||
21c48dbd BT |
1875 | switch (info->bus) { |
1876 | case ETP_BUS_PS2_ONLY: | |
1877 | /* expected case */ | |
1878 | break; | |
1879 | case ETP_BUS_SMB_ALERT_ONLY: | |
1880 | /* fall-through */ | |
1881 | case ETP_BUS_PS2_SMB_ALERT: | |
1882 | psmouse_dbg(psmouse, "Ignoring SMBus provider through alert protocol.\n"); | |
1883 | break; | |
1884 | case ETP_BUS_SMB_HST_NTFY_ONLY: | |
1885 | /* fall-through */ | |
1886 | case ETP_BUS_PS2_SMB_HST_NTFY: | |
1887 | return true; | |
1888 | default: | |
1889 | psmouse_dbg(psmouse, | |
1890 | "Ignoring SMBus bus provider %d.\n", | |
1891 | info->bus); | |
1892 | } | |
1893 | ||
1894 | return false; | |
1895 | } | |
1896 | ||
1897 | int elantech_init_smbus(struct psmouse *psmouse) | |
1898 | { | |
1899 | struct elantech_device_info info; | |
1900 | int error = -EINVAL; | |
1901 | ||
1902 | psmouse_reset(psmouse); | |
1903 | ||
1904 | error = elantech_query_info(psmouse, &info); | |
1905 | if (error) | |
1906 | goto init_fail; | |
1907 | ||
1908 | if (info.hw_version < 4) { | |
1909 | error = -ENXIO; | |
1910 | goto init_fail; | |
1911 | } | |
1912 | ||
1913 | return elantech_create_smbus(psmouse, &info, false); | |
1914 | init_fail: | |
1915 | psmouse_reset(psmouse); | |
1916 | return error; | |
1917 | } | |
1918 | #endif /* CONFIG_MOUSE_PS2_ELANTECH_SMBUS */ | |
1919 | ||
f0787592 BT |
1920 | /* |
1921 | * Initialize the touchpad and create sysfs entries | |
1922 | */ | |
1923 | static int elantech_setup_ps2(struct psmouse *psmouse, | |
1924 | struct elantech_device_info *info) | |
1925 | { | |
1926 | struct elantech_data *etd; | |
1927 | int i; | |
21c48dbd | 1928 | int error = -EINVAL; |
f0787592 BT |
1929 | struct input_dev *tp_dev; |
1930 | ||
1931 | psmouse->private = etd = kzalloc(sizeof(*etd), GFP_KERNEL); | |
1932 | if (!etd) | |
1933 | return -ENOMEM; | |
1934 | ||
1935 | etd->info = *info; | |
1936 | ||
1937 | etd->parity[0] = 1; | |
1938 | for (i = 1; i < 256; i++) | |
1939 | etd->parity[i] = etd->parity[i & (i - 1)] ^ 1; | |
1940 | ||
2a0bd75e | 1941 | if (elantech_set_absolute_mode(psmouse)) { |
b5d21704 DT |
1942 | psmouse_err(psmouse, |
1943 | "failed to put touchpad into absolute mode.\n"); | |
2a0bd75e AO |
1944 | goto init_fail; |
1945 | } | |
1946 | ||
f0787592 | 1947 | if (info->fw_version == 0x381f17) { |
bd884149 UDB |
1948 | etd->original_set_rate = psmouse->set_rate; |
1949 | psmouse->set_rate = elantech_set_rate_restore_reg_07; | |
1950 | } | |
1951 | ||
28f49616 | 1952 | if (elantech_set_input_params(psmouse)) { |
b5d21704 | 1953 | psmouse_err(psmouse, "failed to query touchpad range.\n"); |
28f49616 JD |
1954 | goto init_fail; |
1955 | } | |
2a0bd75e AO |
1956 | |
1957 | error = sysfs_create_group(&psmouse->ps2dev.serio->dev.kobj, | |
1958 | &elantech_attr_group); | |
1959 | if (error) { | |
b5d21704 DT |
1960 | psmouse_err(psmouse, |
1961 | "failed to create sysfs attributes, error: %d.\n", | |
1962 | error); | |
2a0bd75e AO |
1963 | goto init_fail; |
1964 | } | |
1965 | ||
f0787592 | 1966 | if (info->has_trackpoint) { |
a2418fc4 UDB |
1967 | tp_dev = input_allocate_device(); |
1968 | ||
1969 | if (!tp_dev) { | |
1970 | error = -ENOMEM; | |
1971 | goto init_fail_tp_alloc; | |
1972 | } | |
1973 | ||
1974 | etd->tp_dev = tp_dev; | |
1975 | snprintf(etd->tp_phys, sizeof(etd->tp_phys), "%s/input1", | |
1976 | psmouse->ps2dev.serio->phys); | |
1977 | tp_dev->phys = etd->tp_phys; | |
9096a45d | 1978 | tp_dev->name = "ETPS/2 Elantech TrackPoint"; |
a2418fc4 UDB |
1979 | tp_dev->id.bustype = BUS_I8042; |
1980 | tp_dev->id.vendor = 0x0002; | |
1981 | tp_dev->id.product = PSMOUSE_ELANTECH; | |
1982 | tp_dev->id.version = 0x0000; | |
1983 | tp_dev->dev.parent = &psmouse->ps2dev.serio->dev; | |
1984 | tp_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); | |
1985 | tp_dev->relbit[BIT_WORD(REL_X)] = | |
1986 | BIT_MASK(REL_X) | BIT_MASK(REL_Y); | |
1987 | tp_dev->keybit[BIT_WORD(BTN_LEFT)] = | |
1988 | BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | | |
1989 | BIT_MASK(BTN_RIGHT); | |
7611392f | 1990 | |
01d4cd5c | 1991 | __set_bit(INPUT_PROP_POINTER, tp_dev->propbit); |
7611392f HG |
1992 | __set_bit(INPUT_PROP_POINTING_STICK, tp_dev->propbit); |
1993 | ||
a2418fc4 UDB |
1994 | error = input_register_device(etd->tp_dev); |
1995 | if (error < 0) | |
1996 | goto init_fail_tp_reg; | |
1997 | } | |
1998 | ||
2a0bd75e AO |
1999 | psmouse->protocol_handler = elantech_process_byte; |
2000 | psmouse->disconnect = elantech_disconnect; | |
2001 | psmouse->reconnect = elantech_reconnect; | |
f0787592 | 2002 | psmouse->pktsize = info->hw_version > 1 ? 6 : 4; |
2a0bd75e AO |
2003 | |
2004 | return 0; | |
a2418fc4 UDB |
2005 | init_fail_tp_reg: |
2006 | input_free_device(tp_dev); | |
2007 | init_fail_tp_alloc: | |
2008 | sysfs_remove_group(&psmouse->ps2dev.serio->dev.kobj, | |
2009 | &elantech_attr_group); | |
2a0bd75e AO |
2010 | init_fail: |
2011 | kfree(etd); | |
a2418fc4 | 2012 | return error; |
2a0bd75e | 2013 | } |
f0787592 | 2014 | |
21c48dbd | 2015 | int elantech_init_ps2(struct psmouse *psmouse) |
f0787592 BT |
2016 | { |
2017 | struct elantech_device_info info; | |
2018 | int error = -EINVAL; | |
2019 | ||
2020 | psmouse_reset(psmouse); | |
2021 | ||
2022 | error = elantech_query_info(psmouse, &info); | |
2023 | if (error) | |
2024 | goto init_fail; | |
2025 | ||
2026 | error = elantech_setup_ps2(psmouse, &info); | |
2027 | if (error) | |
2028 | goto init_fail; | |
2029 | ||
2030 | return 0; | |
2031 | init_fail: | |
2032 | psmouse_reset(psmouse); | |
2033 | return error; | |
2034 | } | |
21c48dbd BT |
2035 | |
2036 | int elantech_init(struct psmouse *psmouse) | |
2037 | { | |
2038 | struct elantech_device_info info; | |
2039 | int error = -EINVAL; | |
2040 | ||
2041 | psmouse_reset(psmouse); | |
2042 | ||
2043 | error = elantech_query_info(psmouse, &info); | |
2044 | if (error) | |
2045 | goto init_fail; | |
2046 | ||
2047 | #if defined(CONFIG_MOUSE_PS2_ELANTECH_SMBUS) | |
2048 | ||
2049 | if (elantech_use_host_notify(psmouse, &info)) { | |
2050 | if (!IS_ENABLED(CONFIG_MOUSE_ELAN_I2C_SMBUS) || | |
2051 | !IS_ENABLED(CONFIG_MOUSE_PS2_ELANTECH_SMBUS)) { | |
2052 | psmouse_warn(psmouse, | |
2053 | "The touchpad can support a better bus than the too old PS/2 protocol. " | |
2054 | "Make sure MOUSE_PS2_ELANTECH_SMBUS and MOUSE_ELAN_I2C_SMBUS are enabled to get a better touchpad experience.\n"); | |
2055 | } | |
2056 | error = elantech_setup_smbus(psmouse, &info, true); | |
2057 | if (!error) | |
2058 | return PSMOUSE_ELANTECH_SMBUS; | |
2059 | } | |
2060 | ||
2061 | #endif /* CONFIG_MOUSE_PS2_ELANTECH_SMBUS */ | |
2062 | ||
2063 | error = elantech_setup_ps2(psmouse, &info); | |
2064 | if (error < 0) { | |
2065 | /* | |
2066 | * Not using any flavor of Elantech support, so clean up | |
2067 | * SMbus breadcrumbs, if any. | |
2068 | */ | |
2069 | psmouse_smbus_cleanup(psmouse); | |
2070 | goto init_fail; | |
2071 | } | |
2072 | ||
2073 | return PSMOUSE_ELANTECH; | |
2074 | init_fail: | |
2075 | psmouse_reset(psmouse); | |
2076 | return error; | |
2077 | } |