1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * Wacom protocol 4 serial tablet driver |
4 | * |
5 | * Copyright 2014 Hans de Goede <hdegoede@redhat.com> |
6 | * Copyright 2011-2012 Julian Squires <julian@cipht.net> |
7 | * |
8 | * Many thanks to Bill Seremetis, without whom PenPartner support |
9 | * would not have been possible. Thanks to Patrick Mahoney. |
10 | * |
11 | * This driver was developed with reference to much code written by others, |
12 | * particularly: |
13 | * - elo, gunze drivers by Vojtech Pavlik <vojtech@ucw.cz>; |
14 | * - wacom_w8001 driver by Jaya Kumar <jayakumar.lkml@gmail.com>; |
15 | * - the USB wacom input driver, credited to many people |
16 | * (see drivers/input/tablet/wacom.h); |
17 | * - new and old versions of linuxwacom / xf86-input-wacom credited to |
18 | * Frederic Lepied, France. <Lepied@XFree86.org> and |
19 | * Ping Cheng, Wacom. <pingc@wacom.com>; |
20 | * - and xf86wacom.c (a presumably ancient version of the linuxwacom code), |
21 | * by Frederic Lepied and Raph Levien <raph@gtk.org>. |
22 | * |
23 | * To do: |
24 | * - support pad buttons; (requires access to a model with pad buttons) |
25 | * - support (protocol 4-style) tilt (requires access to a > 1.4 rom model) |
26 | */ |
27 | |
28 | /* |
29 | * Wacom serial protocol 4 documentation taken from linuxwacom-0.9.9 code, |
30 | * protocol 4 uses 7 or 9 byte of data in the following format: |
31 | * |
32 | * Byte 1 |
33 | * bit 7 Sync bit always 1 |
34 | * bit 6 Pointing device detected |
35 | * bit 5 Cursor = 0 / Stylus = 1 |
36 | * bit 4 Reserved |
37 | * bit 3 1 if a button on the pointing device has been pressed |
38 | * bit 2 P0 (optional) |
39 | * bit 1 X15 |
40 | * bit 0 X14 |
41 | * |
42 | * Byte 2 |
43 | * bit 7 Always 0 |
44 | * bits 6-0 = X13 - X7 |
45 | * |
46 | * Byte 3 |
47 | * bit 7 Always 0 |
48 | * bits 6-0 = X6 - X0 |
49 | * |
50 | * Byte 4 |
51 | * bit 7 Always 0 |
52 | * bit 6 B3 |
53 | * bit 5 B2 |
54 | * bit 4 B1 |
55 | * bit 3 B0 |
56 | * bit 2 P1 (optional) |
57 | * bit 1 Y15 |
58 | * bit 0 Y14 |
59 | * |
60 | * Byte 5 |
61 | * bit 7 Always 0 |
62 | * bits 6-0 = Y13 - Y7 |
63 | * |
64 | * Byte 6 |
65 | * bit 7 Always 0 |
66 | * bits 6-0 = Y6 - Y0 |
67 | * |
68 | * Byte 7 |
69 | * bit 7 Always 0 |
70 | * bit 6 Sign of pressure data; or wheel-rel for cursor tool |
71 | * bit 5 P7; or REL1 for cursor tool |
72 | * bit 4 P6; or REL0 for cursor tool |
73 | * bit 3 P5 |
74 | * bit 2 P4 |
75 | * bit 1 P3 |
76 | * bit 0 P2 |
77 | * |
78 | * byte 8 and 9 are optional and present only |
79 | * in tilt mode. |
80 | * |
81 | * Byte 8 |
82 | * bit 7 Always 0 |
83 | * bit 6 Sign of tilt X |
84 | * bit 5 Xt6 |
85 | * bit 4 Xt5 |
86 | * bit 3 Xt4 |
87 | * bit 2 Xt3 |
88 | * bit 1 Xt2 |
89 | * bit 0 Xt1 |
90 | * |
91 | * Byte 9 |
92 | * bit 7 Always 0 |
93 | * bit 6 Sign of tilt Y |
94 | * bit 5 Yt6 |
95 | * bit 4 Yt5 |
96 | * bit 3 Yt4 |
97 | * bit 2 Yt3 |
98 | * bit 1 Yt2 |
99 | * bit 0 Yt1 |
100 | */ |
101 | |
102 | #include <linux/completion.h> |
103 | #include <linux/init.h> |
104 | #include <linux/input.h> |
105 | #include <linux/interrupt.h> |
106 | #include <linux/kernel.h> |
107 | #include <linux/module.h> |
108 | #include <linux/serio.h> |
109 | #include <linux/slab.h> |
110 | #include <linux/string.h> |
111 | |
112 | MODULE_AUTHOR("Julian Squires <julian@cipht.net>, Hans de Goede <hdegoede@redhat.com>" ); |
113 | MODULE_DESCRIPTION("Wacom protocol 4 serial tablet driver" ); |
114 | MODULE_LICENSE("GPL" ); |
115 | |
116 | #define REQUEST_MODEL_AND_ROM_VERSION "~#" |
117 | #define REQUEST_MAX_COORDINATES "~C\r" |
118 | #define REQUEST_CONFIGURATION_STRING "~R\r" |
119 | #define REQUEST_RESET_TO_PROTOCOL_IV "\r#" |
120 | /* |
121 | * Note: sending "\r$\r" causes at least the Digitizer II to send |
122 | * packets in ASCII instead of binary. "\r#" seems to undo that. |
123 | */ |
124 | |
125 | #define COMMAND_START_SENDING_PACKETS "ST\r" |
126 | #define COMMAND_STOP_SENDING_PACKETS "SP\r" |
127 | #define COMMAND_MULTI_MODE_INPUT "MU1\r" |
128 | #define COMMAND_ORIGIN_IN_UPPER_LEFT "OC1\r" |
129 | #define COMMAND_ENABLE_ALL_MACRO_BUTTONS "~M0\r" |
130 | #define COMMAND_DISABLE_GROUP_1_MACRO_BUTTONS "~M1\r" |
131 | #define COMMAND_TRANSMIT_AT_MAX_RATE "IT0\r" |
132 | #define COMMAND_DISABLE_INCREMENTAL_MODE "IN0\r" |
133 | #define COMMAND_ENABLE_CONTINUOUS_MODE "SR\r" |
134 | #define COMMAND_ENABLE_PRESSURE_MODE "PH1\r" |
135 | #define COMMAND_Z_FILTER "ZF1\r" |
136 | |
137 | /* Note that this is a protocol 4 packet without tilt information. */ |
138 | #define PACKET_LENGTH 7 |
139 | #define DATA_SIZE 32 |
140 | |
141 | /* flags */ |
142 | #define F_COVERS_SCREEN 0x01 |
143 | #define F_HAS_STYLUS2 0x02 |
144 | #define F_HAS_SCROLLWHEEL 0x04 |
145 | |
146 | /* device IDs */ |
147 | #define STYLUS_DEVICE_ID 0x02 |
148 | #define CURSOR_DEVICE_ID 0x06 |
149 | #define ERASER_DEVICE_ID 0x0A |
150 | |
151 | enum { STYLUS = 1, ERASER, CURSOR }; |
152 | |
153 | static const struct { |
154 | int device_id; |
155 | int input_id; |
156 | } tools[] = { |
157 | { 0, 0 }, |
158 | { STYLUS_DEVICE_ID, BTN_TOOL_PEN }, |
159 | { ERASER_DEVICE_ID, BTN_TOOL_RUBBER }, |
160 | { CURSOR_DEVICE_ID, BTN_TOOL_MOUSE }, |
161 | }; |
162 | |
163 | struct wacom { |
164 | struct input_dev *dev; |
165 | struct completion cmd_done; |
166 | int result; |
167 | u8 expect; |
168 | u8 eraser_mask; |
169 | unsigned int ; |
170 | unsigned int flags; |
171 | unsigned int res_x, res_y; |
172 | unsigned int max_x, max_y; |
173 | unsigned int tool; |
174 | unsigned int idx; |
175 | u8 data[DATA_SIZE]; |
176 | char phys[32]; |
177 | }; |
178 | |
179 | enum { |
180 | MODEL_CINTIQ = 0x504C, /* PL */ |
181 | MODEL_CINTIQ2 = 0x4454, /* DT */ |
182 | MODEL_DIGITIZER_II = 0x5544, /* UD */ |
183 | MODEL_GRAPHIRE = 0x4554, /* ET */ |
184 | MODEL_PENPARTNER = 0x4354, /* CT */ |
185 | MODEL_ARTPAD_II = 0x4B54, /* KT */ |
186 | }; |
187 | |
188 | static void wacom_handle_model_response(struct wacom *wacom) |
189 | { |
190 | int major_v, minor_v, r = 0; |
191 | char *p; |
192 | |
193 | p = strrchr(wacom->data, 'V'); |
194 | if (p) |
195 | r = sscanf(p + 1, "%u.%u" , &major_v, &minor_v); |
196 | if (r != 2) |
197 | major_v = minor_v = 0; |
198 | |
199 | switch (wacom->data[2] << 8 | wacom->data[3]) { |
200 | case MODEL_CINTIQ: /* UNTESTED */ |
201 | case MODEL_CINTIQ2: |
202 | if ((wacom->data[2] << 8 | wacom->data[3]) == MODEL_CINTIQ) { |
203 | wacom->dev->name = "Wacom Cintiq" ; |
204 | wacom->dev->id.version = MODEL_CINTIQ; |
205 | } else { |
206 | wacom->dev->name = "Wacom Cintiq II" ; |
207 | wacom->dev->id.version = MODEL_CINTIQ2; |
208 | } |
209 | wacom->res_x = 508; |
210 | wacom->res_y = 508; |
211 | |
212 | switch (wacom->data[5] << 8 | wacom->data[6]) { |
213 | case 0x3731: /* PL-710 */ |
214 | wacom->res_x = 2540; |
215 | wacom->res_y = 2540; |
216 | fallthrough; |
217 | case 0x3535: /* PL-550 */ |
218 | case 0x3830: /* PL-800 */ |
219 | wacom->extra_z_bits = 2; |
220 | } |
221 | |
222 | wacom->flags = F_COVERS_SCREEN; |
223 | break; |
224 | |
225 | case MODEL_PENPARTNER: |
226 | wacom->dev->name = "Wacom Penpartner" ; |
227 | wacom->dev->id.version = MODEL_PENPARTNER; |
228 | wacom->res_x = 1000; |
229 | wacom->res_y = 1000; |
230 | break; |
231 | |
232 | case MODEL_GRAPHIRE: |
233 | wacom->dev->name = "Wacom Graphire" ; |
234 | wacom->dev->id.version = MODEL_GRAPHIRE; |
235 | wacom->res_x = 1016; |
236 | wacom->res_y = 1016; |
237 | wacom->max_x = 5103; |
238 | wacom->max_y = 3711; |
239 | wacom->extra_z_bits = 2; |
240 | wacom->eraser_mask = 0x08; |
241 | wacom->flags = F_HAS_STYLUS2 | F_HAS_SCROLLWHEEL; |
242 | break; |
243 | |
244 | case MODEL_ARTPAD_II: |
245 | case MODEL_DIGITIZER_II: |
246 | wacom->dev->name = "Wacom Digitizer II" ; |
247 | wacom->dev->id.version = MODEL_DIGITIZER_II; |
248 | if (major_v == 1 && minor_v <= 2) |
249 | wacom->extra_z_bits = 0; /* UNTESTED */ |
250 | break; |
251 | |
252 | default: |
253 | dev_err(&wacom->dev->dev, "Unsupported Wacom model %s\n" , |
254 | wacom->data); |
255 | wacom->result = -ENODEV; |
256 | return; |
257 | } |
258 | |
259 | dev_info(&wacom->dev->dev, "%s tablet, version %u.%u\n" , |
260 | wacom->dev->name, major_v, minor_v); |
261 | } |
262 | |
263 | static void wacom_handle_configuration_response(struct wacom *wacom) |
264 | { |
265 | int r, skip; |
266 | |
267 | dev_dbg(&wacom->dev->dev, "Configuration string: %s\n" , wacom->data); |
268 | r = sscanf(wacom->data, "~R%x,%u,%u,%u,%u" , &skip, &skip, &skip, |
269 | &wacom->res_x, &wacom->res_y); |
270 | if (r != 5) |
271 | dev_warn(&wacom->dev->dev, "could not get resolution\n" ); |
272 | } |
273 | |
274 | static void wacom_handle_coordinates_response(struct wacom *wacom) |
275 | { |
276 | int r; |
277 | |
278 | dev_dbg(&wacom->dev->dev, "Coordinates string: %s\n" , wacom->data); |
279 | r = sscanf(wacom->data, "~C%u,%u" , &wacom->max_x, &wacom->max_y); |
280 | if (r != 2) |
281 | dev_warn(&wacom->dev->dev, "could not get max coordinates\n" ); |
282 | } |
283 | |
284 | static void wacom_handle_response(struct wacom *wacom) |
285 | { |
286 | if (wacom->data[0] != '~' || wacom->data[1] != wacom->expect) { |
287 | dev_err(&wacom->dev->dev, |
288 | "Wacom got an unexpected response: %s\n" , wacom->data); |
289 | wacom->result = -EIO; |
290 | } else { |
291 | wacom->result = 0; |
292 | |
293 | switch (wacom->data[1]) { |
294 | case '#': |
295 | wacom_handle_model_response(wacom); |
296 | break; |
297 | case 'R': |
298 | wacom_handle_configuration_response(wacom); |
299 | break; |
300 | case 'C': |
301 | wacom_handle_coordinates_response(wacom); |
302 | break; |
303 | } |
304 | } |
305 | |
306 | complete(&wacom->cmd_done); |
307 | } |
308 | |
309 | static void wacom_handle_packet(struct wacom *wacom) |
310 | { |
311 | u8 in_proximity_p, stylus_p, button; |
312 | unsigned int tool; |
313 | int x, y, z; |
314 | |
315 | in_proximity_p = wacom->data[0] & 0x40; |
316 | stylus_p = wacom->data[0] & 0x20; |
317 | button = (wacom->data[3] & 0x78) >> 3; |
318 | x = (wacom->data[0] & 3) << 14 | wacom->data[1]<<7 | wacom->data[2]; |
319 | y = (wacom->data[3] & 3) << 14 | wacom->data[4]<<7 | wacom->data[5]; |
320 | |
321 | if (in_proximity_p && stylus_p) { |
322 | z = wacom->data[6] & 0x7f; |
323 | if (wacom->extra_z_bits >= 1) |
324 | z = z << 1 | (wacom->data[3] & 0x4) >> 2; |
325 | if (wacom->extra_z_bits > 1) |
326 | z = z << 1 | (wacom->data[0] & 0x4) >> 2; |
327 | z = z ^ (0x40 << wacom->extra_z_bits); |
328 | } else { |
329 | z = -1; |
330 | } |
331 | |
332 | if (stylus_p) |
333 | tool = (button & wacom->eraser_mask) ? ERASER : STYLUS; |
334 | else |
335 | tool = CURSOR; |
336 | |
337 | if (tool != wacom->tool && wacom->tool != 0) { |
338 | input_report_key(dev: wacom->dev, code: tools[wacom->tool].input_id, value: 0); |
339 | input_sync(dev: wacom->dev); |
340 | } |
341 | wacom->tool = tool; |
342 | |
343 | input_report_key(dev: wacom->dev, code: tools[tool].input_id, value: in_proximity_p); |
344 | input_report_abs(dev: wacom->dev, ABS_MISC, |
345 | value: in_proximity_p ? tools[tool].device_id : 0); |
346 | input_report_abs(dev: wacom->dev, ABS_X, value: x); |
347 | input_report_abs(dev: wacom->dev, ABS_Y, value: y); |
348 | input_report_abs(dev: wacom->dev, ABS_PRESSURE, value: z); |
349 | if (stylus_p) { |
350 | input_report_key(dev: wacom->dev, BTN_TOUCH, value: button & 1); |
351 | input_report_key(dev: wacom->dev, BTN_STYLUS, value: button & 2); |
352 | input_report_key(dev: wacom->dev, BTN_STYLUS2, value: button & 4); |
353 | } else { |
354 | input_report_key(dev: wacom->dev, BTN_LEFT, value: button & 1); |
355 | input_report_key(dev: wacom->dev, BTN_RIGHT, value: button & 2); |
356 | input_report_key(dev: wacom->dev, BTN_MIDDLE, value: button & 4); |
357 | /* handle relative wheel for non-stylus device */ |
358 | z = (wacom->data[6] & 0x30) >> 4; |
359 | if (wacom->data[6] & 0x40) |
360 | z = -z; |
361 | input_report_rel(dev: wacom->dev, REL_WHEEL, value: z); |
362 | } |
363 | input_sync(dev: wacom->dev); |
364 | } |
365 | |
366 | static void wacom_clear_data_buf(struct wacom *wacom) |
367 | { |
368 | memset(wacom->data, 0, DATA_SIZE); |
369 | wacom->idx = 0; |
370 | } |
371 | |
372 | static irqreturn_t wacom_interrupt(struct serio *serio, unsigned char data, |
373 | unsigned int flags) |
374 | { |
375 | struct wacom *wacom = serio_get_drvdata(serio); |
376 | |
377 | if (data & 0x80) |
378 | wacom->idx = 0; |
379 | |
380 | /* |
381 | * We're either expecting a carriage return-terminated ASCII |
382 | * response string, or a seven-byte packet with the MSB set on |
383 | * the first byte. |
384 | * |
385 | * Note however that some tablets (the PenPartner, for |
386 | * example) don't send a carriage return at the end of a |
387 | * command. We handle these by waiting for timeout. |
388 | */ |
389 | if (data == '\r' && !(wacom->data[0] & 0x80)) { |
390 | wacom_handle_response(wacom); |
391 | wacom_clear_data_buf(wacom); |
392 | return IRQ_HANDLED; |
393 | } |
394 | |
395 | /* Leave place for 0 termination */ |
396 | if (wacom->idx > (DATA_SIZE - 2)) { |
397 | dev_dbg(&wacom->dev->dev, |
398 | "throwing away %d bytes of garbage\n" , wacom->idx); |
399 | wacom_clear_data_buf(wacom); |
400 | } |
401 | wacom->data[wacom->idx++] = data; |
402 | |
403 | if (wacom->idx == PACKET_LENGTH && (wacom->data[0] & 0x80)) { |
404 | wacom_handle_packet(wacom); |
405 | wacom_clear_data_buf(wacom); |
406 | } |
407 | |
408 | return IRQ_HANDLED; |
409 | } |
410 | |
411 | static void wacom_disconnect(struct serio *serio) |
412 | { |
413 | struct wacom *wacom = serio_get_drvdata(serio); |
414 | |
415 | serio_close(serio); |
416 | serio_set_drvdata(serio, NULL); |
417 | input_unregister_device(wacom->dev); |
418 | kfree(objp: wacom); |
419 | } |
420 | |
421 | static int wacom_send(struct serio *serio, const u8 *command) |
422 | { |
423 | int err = 0; |
424 | |
425 | for (; !err && *command; command++) |
426 | err = serio_write(serio, data: *command); |
427 | |
428 | return err; |
429 | } |
430 | |
431 | static int wacom_send_setup_string(struct wacom *wacom, struct serio *serio) |
432 | { |
433 | const u8 *cmd; |
434 | |
435 | switch (wacom->dev->id.version) { |
436 | case MODEL_CINTIQ: /* UNTESTED */ |
437 | cmd = COMMAND_ORIGIN_IN_UPPER_LEFT |
438 | COMMAND_TRANSMIT_AT_MAX_RATE |
439 | COMMAND_ENABLE_CONTINUOUS_MODE |
440 | COMMAND_START_SENDING_PACKETS; |
441 | break; |
442 | |
443 | case MODEL_PENPARTNER: |
444 | cmd = COMMAND_ENABLE_PRESSURE_MODE |
445 | COMMAND_START_SENDING_PACKETS; |
446 | break; |
447 | |
448 | default: |
449 | cmd = COMMAND_MULTI_MODE_INPUT |
450 | COMMAND_ORIGIN_IN_UPPER_LEFT |
451 | COMMAND_ENABLE_ALL_MACRO_BUTTONS |
452 | COMMAND_DISABLE_GROUP_1_MACRO_BUTTONS |
453 | COMMAND_TRANSMIT_AT_MAX_RATE |
454 | COMMAND_DISABLE_INCREMENTAL_MODE |
455 | COMMAND_ENABLE_CONTINUOUS_MODE |
456 | COMMAND_Z_FILTER |
457 | COMMAND_START_SENDING_PACKETS; |
458 | break; |
459 | } |
460 | |
461 | return wacom_send(serio, command: cmd); |
462 | } |
463 | |
464 | static int wacom_send_and_wait(struct wacom *wacom, struct serio *serio, |
465 | const u8 *cmd, const char *desc) |
466 | { |
467 | int err; |
468 | unsigned long u; |
469 | |
470 | wacom->expect = cmd[1]; |
471 | init_completion(x: &wacom->cmd_done); |
472 | |
473 | err = wacom_send(serio, command: cmd); |
474 | if (err) |
475 | return err; |
476 | |
477 | u = wait_for_completion_timeout(x: &wacom->cmd_done, HZ); |
478 | if (u == 0) { |
479 | /* Timeout, process what we've received. */ |
480 | wacom_handle_response(wacom); |
481 | } |
482 | |
483 | wacom->expect = 0; |
484 | return wacom->result; |
485 | } |
486 | |
487 | static int wacom_setup(struct wacom *wacom, struct serio *serio) |
488 | { |
489 | int err; |
490 | |
491 | /* Note that setting the link speed is the job of inputattach. |
492 | * We assume that reset negotiation has already happened, |
493 | * here. */ |
494 | err = wacom_send_and_wait(wacom, serio, REQUEST_MODEL_AND_ROM_VERSION, |
495 | desc: "model and version" ); |
496 | if (err) |
497 | return err; |
498 | |
499 | if (!(wacom->res_x && wacom->res_y)) { |
500 | err = wacom_send_and_wait(wacom, serio, |
501 | REQUEST_CONFIGURATION_STRING, |
502 | desc: "configuration string" ); |
503 | if (err) |
504 | return err; |
505 | } |
506 | |
507 | if (!(wacom->max_x && wacom->max_y)) { |
508 | err = wacom_send_and_wait(wacom, serio, |
509 | REQUEST_MAX_COORDINATES, |
510 | desc: "coordinates string" ); |
511 | if (err) |
512 | return err; |
513 | } |
514 | |
515 | return wacom_send_setup_string(wacom, serio); |
516 | } |
517 | |
518 | static int wacom_connect(struct serio *serio, struct serio_driver *drv) |
519 | { |
520 | struct wacom *wacom; |
521 | struct input_dev *input_dev; |
522 | int err = -ENOMEM; |
523 | |
524 | wacom = kzalloc(size: sizeof(struct wacom), GFP_KERNEL); |
525 | input_dev = input_allocate_device(); |
526 | if (!wacom || !input_dev) |
527 | goto free_device; |
528 | |
529 | wacom->dev = input_dev; |
530 | wacom->extra_z_bits = 1; |
531 | wacom->eraser_mask = 0x04; |
532 | wacom->tool = wacom->idx = 0; |
533 | snprintf(buf: wacom->phys, size: sizeof(wacom->phys), fmt: "%s/input0" , serio->phys); |
534 | input_dev->phys = wacom->phys; |
535 | input_dev->id.bustype = BUS_RS232; |
536 | input_dev->id.vendor = SERIO_WACOM_IV; |
537 | input_dev->id.product = serio->id.extra; |
538 | input_dev->dev.parent = &serio->dev; |
539 | |
540 | input_dev->evbit[0] = |
541 | BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS) | BIT_MASK(EV_REL); |
542 | set_bit(ABS_MISC, addr: input_dev->absbit); |
543 | set_bit(BTN_TOOL_PEN, addr: input_dev->keybit); |
544 | set_bit(BTN_TOOL_RUBBER, addr: input_dev->keybit); |
545 | set_bit(BTN_TOOL_MOUSE, addr: input_dev->keybit); |
546 | set_bit(BTN_TOUCH, addr: input_dev->keybit); |
547 | set_bit(BTN_STYLUS, addr: input_dev->keybit); |
548 | set_bit(BTN_LEFT, addr: input_dev->keybit); |
549 | set_bit(BTN_RIGHT, addr: input_dev->keybit); |
550 | set_bit(BTN_MIDDLE, addr: input_dev->keybit); |
551 | |
552 | serio_set_drvdata(serio, data: wacom); |
553 | |
554 | err = serio_open(serio, drv); |
555 | if (err) |
556 | goto free_device; |
557 | |
558 | err = wacom_setup(wacom, serio); |
559 | if (err) |
560 | goto close_serio; |
561 | |
562 | set_bit(INPUT_PROP_DIRECT, addr: input_dev->propbit); |
563 | if (!(wacom->flags & F_COVERS_SCREEN)) |
564 | __set_bit(INPUT_PROP_POINTER, input_dev->propbit); |
565 | |
566 | if (wacom->flags & F_HAS_STYLUS2) |
567 | __set_bit(BTN_STYLUS2, input_dev->keybit); |
568 | |
569 | if (wacom->flags & F_HAS_SCROLLWHEEL) |
570 | __set_bit(REL_WHEEL, input_dev->relbit); |
571 | |
572 | input_abs_set_res(dev: wacom->dev, ABS_X, val: wacom->res_x); |
573 | input_abs_set_res(dev: wacom->dev, ABS_Y, val: wacom->res_y); |
574 | input_set_abs_params(dev: wacom->dev, ABS_X, min: 0, max: wacom->max_x, fuzz: 0, flat: 0); |
575 | input_set_abs_params(dev: wacom->dev, ABS_Y, min: 0, max: wacom->max_y, fuzz: 0, flat: 0); |
576 | input_set_abs_params(dev: wacom->dev, ABS_PRESSURE, min: -1, |
577 | max: (1 << (7 + wacom->extra_z_bits)) - 1, fuzz: 0, flat: 0); |
578 | |
579 | err = input_register_device(wacom->dev); |
580 | if (err) |
581 | goto close_serio; |
582 | |
583 | return 0; |
584 | |
585 | close_serio: |
586 | serio_close(serio); |
587 | free_device: |
588 | serio_set_drvdata(serio, NULL); |
589 | input_free_device(dev: input_dev); |
590 | kfree(objp: wacom); |
591 | return err; |
592 | } |
593 | |
594 | static const struct serio_device_id wacom_serio_ids[] = { |
595 | { |
596 | .type = SERIO_RS232, |
597 | .proto = SERIO_WACOM_IV, |
598 | .id = SERIO_ANY, |
599 | .extra = SERIO_ANY, |
600 | }, |
601 | { 0 } |
602 | }; |
603 | |
604 | MODULE_DEVICE_TABLE(serio, wacom_serio_ids); |
605 | |
606 | static struct serio_driver wacom_drv = { |
607 | .driver = { |
608 | .name = "wacom_serial4" , |
609 | }, |
610 | .description = "Wacom protocol 4 serial tablet driver" , |
611 | .id_table = wacom_serio_ids, |
612 | .interrupt = wacom_interrupt, |
613 | .connect = wacom_connect, |
614 | .disconnect = wacom_disconnect, |
615 | }; |
616 | |
617 | module_serio_driver(wacom_drv); |
618 | |