1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * USB Wacom tablet support - system specific code |
4 | */ |
5 | |
6 | #include "wacom_wac.h" |
7 | #include "wacom.h" |
8 | #include <linux/input/mt.h> |
9 | |
10 | #define WAC_MSG_RETRIES 5 |
11 | #define WAC_CMD_RETRIES 10 |
12 | |
13 | #define DEV_ATTR_RW_PERM (S_IRUGO | S_IWUSR | S_IWGRP) |
14 | #define DEV_ATTR_WO_PERM (S_IWUSR | S_IWGRP) |
15 | #define DEV_ATTR_RO_PERM (S_IRUSR | S_IRGRP) |
16 | |
17 | static int wacom_get_report(struct hid_device *hdev, u8 type, u8 *buf, |
18 | size_t size, unsigned int retries) |
19 | { |
20 | int retval; |
21 | |
22 | do { |
23 | retval = hid_hw_raw_request(hdev, reportnum: buf[0], buf, len: size, rtype: type, |
24 | reqtype: HID_REQ_GET_REPORT); |
25 | } while ((retval == -ETIMEDOUT || retval == -EAGAIN) && --retries); |
26 | |
27 | if (retval < 0) |
28 | hid_err(hdev, "wacom_get_report: ran out of retries " |
29 | "(last error = %d)\n" , retval); |
30 | |
31 | return retval; |
32 | } |
33 | |
34 | static int wacom_set_report(struct hid_device *hdev, u8 type, u8 *buf, |
35 | size_t size, unsigned int retries) |
36 | { |
37 | int retval; |
38 | |
39 | do { |
40 | retval = hid_hw_raw_request(hdev, reportnum: buf[0], buf, len: size, rtype: type, |
41 | reqtype: HID_REQ_SET_REPORT); |
42 | } while ((retval == -ETIMEDOUT || retval == -EAGAIN) && --retries); |
43 | |
44 | if (retval < 0) |
45 | hid_err(hdev, "wacom_set_report: ran out of retries " |
46 | "(last error = %d)\n" , retval); |
47 | |
48 | return retval; |
49 | } |
50 | |
51 | static void wacom_wac_queue_insert(struct hid_device *hdev, |
52 | struct kfifo_rec_ptr_2 *fifo, |
53 | u8 *raw_data, int size) |
54 | { |
55 | bool warned = false; |
56 | |
57 | while (kfifo_avail(fifo) < size) { |
58 | if (!warned) |
59 | hid_warn(hdev, "%s: kfifo has filled, starting to drop events\n" , __func__); |
60 | warned = true; |
61 | |
62 | kfifo_skip(fifo); |
63 | } |
64 | |
65 | kfifo_in(fifo, raw_data, size); |
66 | } |
67 | |
68 | static void wacom_wac_queue_flush(struct hid_device *hdev, |
69 | struct kfifo_rec_ptr_2 *fifo) |
70 | { |
71 | while (!kfifo_is_empty(fifo)) { |
72 | u8 buf[WACOM_PKGLEN_MAX]; |
73 | int size; |
74 | int err; |
75 | |
76 | size = kfifo_out(fifo, buf, sizeof(buf)); |
77 | err = hid_report_raw_event(hid: hdev, type: HID_INPUT_REPORT, data: buf, size, interrupt: false); |
78 | if (err) { |
79 | hid_warn(hdev, "%s: unable to flush event due to error %d\n" , |
80 | __func__, err); |
81 | } |
82 | } |
83 | } |
84 | |
85 | static int wacom_wac_pen_serial_enforce(struct hid_device *hdev, |
86 | struct hid_report *report, u8 *raw_data, int report_size) |
87 | { |
88 | struct wacom *wacom = hid_get_drvdata(hdev); |
89 | struct wacom_wac *wacom_wac = &wacom->wacom_wac; |
90 | struct wacom_features *features = &wacom_wac->features; |
91 | bool flush = false; |
92 | bool insert = false; |
93 | int i, j; |
94 | |
95 | if (wacom_wac->serial[0] || !(features->quirks & WACOM_QUIRK_TOOLSERIAL)) |
96 | return 0; |
97 | |
98 | /* Queue events which have invalid tool type or serial number */ |
99 | for (i = 0; i < report->maxfield; i++) { |
100 | for (j = 0; j < report->field[i]->maxusage; j++) { |
101 | struct hid_field *field = report->field[i]; |
102 | struct hid_usage *usage = &field->usage[j]; |
103 | unsigned int equivalent_usage = wacom_equivalent_usage(usage: usage->hid); |
104 | unsigned int offset; |
105 | unsigned int size; |
106 | unsigned int value; |
107 | |
108 | if (equivalent_usage != HID_DG_INRANGE && |
109 | equivalent_usage != HID_DG_TOOLSERIALNUMBER && |
110 | equivalent_usage != WACOM_HID_WD_SERIALHI && |
111 | equivalent_usage != WACOM_HID_WD_TOOLTYPE) |
112 | continue; |
113 | |
114 | offset = field->report_offset; |
115 | size = field->report_size; |
116 | value = hid_field_extract(hid: hdev, report: raw_data+1, offset: offset + j * size, n: size); |
117 | |
118 | /* If we go out of range, we need to flush the queue ASAP */ |
119 | if (equivalent_usage == HID_DG_INRANGE) |
120 | value = !value; |
121 | |
122 | if (value) { |
123 | flush = true; |
124 | switch (equivalent_usage) { |
125 | case HID_DG_TOOLSERIALNUMBER: |
126 | wacom_wac->serial[0] = value; |
127 | break; |
128 | |
129 | case WACOM_HID_WD_SERIALHI: |
130 | wacom_wac->serial[0] |= ((__u64)value) << 32; |
131 | break; |
132 | |
133 | case WACOM_HID_WD_TOOLTYPE: |
134 | wacom_wac->id[0] = value; |
135 | break; |
136 | } |
137 | } |
138 | else { |
139 | insert = true; |
140 | } |
141 | } |
142 | } |
143 | |
144 | if (flush) |
145 | wacom_wac_queue_flush(hdev, fifo: wacom_wac->pen_fifo); |
146 | else if (insert) |
147 | wacom_wac_queue_insert(hdev, fifo: wacom_wac->pen_fifo, |
148 | raw_data, size: report_size); |
149 | |
150 | return insert && !flush; |
151 | } |
152 | |
153 | static int wacom_raw_event(struct hid_device *hdev, struct hid_report *report, |
154 | u8 *raw_data, int size) |
155 | { |
156 | struct wacom *wacom = hid_get_drvdata(hdev); |
157 | |
158 | if (wacom->wacom_wac.features.type == BOOTLOADER) |
159 | return 0; |
160 | |
161 | if (size > WACOM_PKGLEN_MAX) |
162 | return 1; |
163 | |
164 | if (wacom_wac_pen_serial_enforce(hdev, report, raw_data, report_size: size)) |
165 | return -1; |
166 | |
167 | memcpy(wacom->wacom_wac.data, raw_data, size); |
168 | |
169 | wacom_wac_irq(wacom_wac: &wacom->wacom_wac, len: size); |
170 | |
171 | return 0; |
172 | } |
173 | |
174 | static int wacom_open(struct input_dev *dev) |
175 | { |
176 | struct wacom *wacom = input_get_drvdata(dev); |
177 | |
178 | return hid_hw_open(hdev: wacom->hdev); |
179 | } |
180 | |
181 | static void wacom_close(struct input_dev *dev) |
182 | { |
183 | struct wacom *wacom = input_get_drvdata(dev); |
184 | |
185 | /* |
186 | * wacom->hdev should never be null, but surprisingly, I had the case |
187 | * once while unplugging the Wacom Wireless Receiver. |
188 | */ |
189 | if (wacom->hdev) |
190 | hid_hw_close(hdev: wacom->hdev); |
191 | } |
192 | |
193 | /* |
194 | * Calculate the resolution of the X or Y axis using hidinput_calc_abs_res. |
195 | */ |
196 | static int wacom_calc_hid_res(int logical_extents, int physical_extents, |
197 | unsigned unit, int exponent) |
198 | { |
199 | struct hid_field field = { |
200 | .logical_maximum = logical_extents, |
201 | .physical_maximum = physical_extents, |
202 | .unit = unit, |
203 | .unit_exponent = exponent, |
204 | }; |
205 | |
206 | return hidinput_calc_abs_res(field: &field, ABS_X); |
207 | } |
208 | |
209 | static void wacom_hid_usage_quirk(struct hid_device *hdev, |
210 | struct hid_field *field, struct hid_usage *usage) |
211 | { |
212 | struct wacom *wacom = hid_get_drvdata(hdev); |
213 | struct wacom_features *features = &wacom->wacom_wac.features; |
214 | unsigned int equivalent_usage = wacom_equivalent_usage(usage: usage->hid); |
215 | |
216 | /* |
217 | * The Dell Canvas 27 needs to be switched to its vendor-defined |
218 | * report to provide the best resolution. |
219 | */ |
220 | if (hdev->vendor == USB_VENDOR_ID_WACOM && |
221 | hdev->product == 0x4200 && |
222 | field->application == HID_UP_MSVENDOR) { |
223 | wacom->wacom_wac.mode_report = field->report->id; |
224 | wacom->wacom_wac.mode_value = 2; |
225 | } |
226 | |
227 | /* |
228 | * ISDv4 devices which predate HID's adoption of the |
229 | * HID_DG_BARELSWITCH2 usage use 0x000D0000 in its |
230 | * position instead. We can accurately detect if a |
231 | * usage with that value should be HID_DG_BARRELSWITCH2 |
232 | * based on the surrounding usages, which have remained |
233 | * constant across generations. |
234 | */ |
235 | if (features->type == HID_GENERIC && |
236 | usage->hid == 0x000D0000 && |
237 | field->application == HID_DG_PEN && |
238 | field->physical == HID_DG_STYLUS) { |
239 | int i = usage->usage_index; |
240 | |
241 | if (i-4 >= 0 && i+1 < field->maxusage && |
242 | field->usage[i-4].hid == HID_DG_TIPSWITCH && |
243 | field->usage[i-3].hid == HID_DG_BARRELSWITCH && |
244 | field->usage[i-2].hid == HID_DG_ERASER && |
245 | field->usage[i-1].hid == HID_DG_INVERT && |
246 | field->usage[i+1].hid == HID_DG_INRANGE) { |
247 | usage->hid = HID_DG_BARRELSWITCH2; |
248 | } |
249 | } |
250 | |
251 | /* |
252 | * Wacom's AES devices use different vendor-defined usages to |
253 | * report serial number information compared to their branded |
254 | * hardware. The usages are also sometimes ill-defined and do |
255 | * not have the correct logical min/max values set. Lets patch |
256 | * the descriptor to use the branded usage convention and fix |
257 | * the errors. |
258 | */ |
259 | if (usage->hid == WACOM_HID_WT_SERIALNUMBER && |
260 | field->report_size == 16 && |
261 | field->index + 2 < field->report->maxfield) { |
262 | struct hid_field *a = field->report->field[field->index + 1]; |
263 | struct hid_field *b = field->report->field[field->index + 2]; |
264 | |
265 | if (a->maxusage > 0 && |
266 | a->usage[0].hid == HID_DG_TOOLSERIALNUMBER && |
267 | a->report_size == 32 && |
268 | b->maxusage > 0 && |
269 | b->usage[0].hid == 0xFF000000 && |
270 | b->report_size == 8) { |
271 | features->quirks |= WACOM_QUIRK_AESPEN; |
272 | usage->hid = WACOM_HID_WD_TOOLTYPE; |
273 | field->logical_minimum = S16_MIN; |
274 | field->logical_maximum = S16_MAX; |
275 | a->logical_minimum = S32_MIN; |
276 | a->logical_maximum = S32_MAX; |
277 | b->usage[0].hid = WACOM_HID_WD_SERIALHI; |
278 | b->logical_minimum = 0; |
279 | b->logical_maximum = U8_MAX; |
280 | } |
281 | } |
282 | |
283 | /* 2nd-generation Intuos Pro Large has incorrect Y maximum */ |
284 | if (hdev->vendor == USB_VENDOR_ID_WACOM && |
285 | hdev->product == 0x0358 && |
286 | WACOM_PEN_FIELD(field) && |
287 | equivalent_usage == HID_GD_Y) { |
288 | field->logical_maximum = 43200; |
289 | } |
290 | } |
291 | |
292 | static void wacom_feature_mapping(struct hid_device *hdev, |
293 | struct hid_field *field, struct hid_usage *usage) |
294 | { |
295 | struct wacom *wacom = hid_get_drvdata(hdev); |
296 | struct wacom_features *features = &wacom->wacom_wac.features; |
297 | struct hid_data *hid_data = &wacom->wacom_wac.hid_data; |
298 | unsigned int equivalent_usage = wacom_equivalent_usage(usage: usage->hid); |
299 | u8 *data; |
300 | int ret; |
301 | u32 n; |
302 | |
303 | wacom_hid_usage_quirk(hdev, field, usage); |
304 | |
305 | switch (equivalent_usage) { |
306 | case WACOM_HID_WD_TOUCH_RING_SETTING: |
307 | wacom->generic_has_leds = true; |
308 | break; |
309 | case HID_DG_CONTACTMAX: |
310 | /* leave touch_max as is if predefined */ |
311 | if (!features->touch_max) { |
312 | /* read manually */ |
313 | n = hid_report_len(report: field->report); |
314 | data = hid_alloc_report_buf(report: field->report, GFP_KERNEL); |
315 | if (!data) |
316 | break; |
317 | data[0] = field->report->id; |
318 | ret = wacom_get_report(hdev, type: HID_FEATURE_REPORT, |
319 | buf: data, size: n, WAC_CMD_RETRIES); |
320 | if (ret == n && features->type == HID_GENERIC) { |
321 | ret = hid_report_raw_event(hid: hdev, |
322 | type: HID_FEATURE_REPORT, data, size: n, interrupt: 0); |
323 | } else if (ret == 2 && features->type != HID_GENERIC) { |
324 | features->touch_max = data[1]; |
325 | } else { |
326 | features->touch_max = 16; |
327 | hid_warn(hdev, "wacom_feature_mapping: " |
328 | "could not get HID_DG_CONTACTMAX, " |
329 | "defaulting to %d\n" , |
330 | features->touch_max); |
331 | } |
332 | kfree(objp: data); |
333 | } |
334 | break; |
335 | case HID_DG_INPUTMODE: |
336 | /* Ignore if value index is out of bounds. */ |
337 | if (usage->usage_index >= field->report_count) { |
338 | dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n" ); |
339 | break; |
340 | } |
341 | |
342 | hid_data->inputmode = field->report->id; |
343 | hid_data->inputmode_index = usage->usage_index; |
344 | break; |
345 | |
346 | case HID_UP_DIGITIZER: |
347 | if (field->report->id == 0x0B && |
348 | (field->application == WACOM_HID_G9_PEN || |
349 | field->application == WACOM_HID_G11_PEN)) { |
350 | wacom->wacom_wac.mode_report = field->report->id; |
351 | wacom->wacom_wac.mode_value = 0; |
352 | } |
353 | break; |
354 | |
355 | case WACOM_HID_WD_DATAMODE: |
356 | wacom->wacom_wac.mode_report = field->report->id; |
357 | wacom->wacom_wac.mode_value = 2; |
358 | break; |
359 | |
360 | case WACOM_HID_UP_G9: |
361 | case WACOM_HID_UP_G11: |
362 | if (field->report->id == 0x03 && |
363 | (field->application == WACOM_HID_G9_TOUCHSCREEN || |
364 | field->application == WACOM_HID_G11_TOUCHSCREEN)) { |
365 | wacom->wacom_wac.mode_report = field->report->id; |
366 | wacom->wacom_wac.mode_value = 0; |
367 | } |
368 | break; |
369 | case WACOM_HID_WD_OFFSETLEFT: |
370 | case WACOM_HID_WD_OFFSETTOP: |
371 | case WACOM_HID_WD_OFFSETRIGHT: |
372 | case WACOM_HID_WD_OFFSETBOTTOM: |
373 | /* read manually */ |
374 | n = hid_report_len(report: field->report); |
375 | data = hid_alloc_report_buf(report: field->report, GFP_KERNEL); |
376 | if (!data) |
377 | break; |
378 | data[0] = field->report->id; |
379 | ret = wacom_get_report(hdev, type: HID_FEATURE_REPORT, |
380 | buf: data, size: n, WAC_CMD_RETRIES); |
381 | if (ret == n) { |
382 | ret = hid_report_raw_event(hid: hdev, type: HID_FEATURE_REPORT, |
383 | data, size: n, interrupt: 0); |
384 | } else { |
385 | hid_warn(hdev, "%s: could not retrieve sensor offsets\n" , |
386 | __func__); |
387 | } |
388 | kfree(objp: data); |
389 | break; |
390 | } |
391 | } |
392 | |
393 | /* |
394 | * Interface Descriptor of wacom devices can be incomplete and |
395 | * inconsistent so wacom_features table is used to store stylus |
396 | * device's packet lengths, various maximum values, and tablet |
397 | * resolution based on product ID's. |
398 | * |
399 | * For devices that contain 2 interfaces, wacom_features table is |
400 | * inaccurate for the touch interface. Since the Interface Descriptor |
401 | * for touch interfaces has pretty complete data, this function exists |
402 | * to query tablet for this missing information instead of hard coding in |
403 | * an additional table. |
404 | * |
405 | * A typical Interface Descriptor for a stylus will contain a |
406 | * boot mouse application collection that is not of interest and this |
407 | * function will ignore it. |
408 | * |
409 | * It also contains a digitizer application collection that also is not |
410 | * of interest since any information it contains would be duplicate |
411 | * of what is in wacom_features. Usually it defines a report of an array |
412 | * of bytes that could be used as max length of the stylus packet returned. |
413 | * If it happens to define a Digitizer-Stylus Physical Collection then |
414 | * the X and Y logical values contain valid data but it is ignored. |
415 | * |
416 | * A typical Interface Descriptor for a touch interface will contain a |
417 | * Digitizer-Finger Physical Collection which will define both logical |
418 | * X/Y maximum as well as the physical size of tablet. Since touch |
419 | * interfaces haven't supported pressure or distance, this is enough |
420 | * information to override invalid values in the wacom_features table. |
421 | * |
422 | * Intuos5 touch interface and 3rd gen Bamboo Touch do not contain useful |
423 | * data. We deal with them after returning from this function. |
424 | */ |
425 | static void wacom_usage_mapping(struct hid_device *hdev, |
426 | struct hid_field *field, struct hid_usage *usage) |
427 | { |
428 | struct wacom *wacom = hid_get_drvdata(hdev); |
429 | struct wacom_features *features = &wacom->wacom_wac.features; |
430 | bool finger = WACOM_FINGER_FIELD(field); |
431 | bool pen = WACOM_PEN_FIELD(field); |
432 | unsigned equivalent_usage = wacom_equivalent_usage(usage: usage->hid); |
433 | |
434 | /* |
435 | * Requiring Stylus Usage will ignore boot mouse |
436 | * X/Y values and some cases of invalid Digitizer X/Y |
437 | * values commonly reported. |
438 | */ |
439 | if (pen) |
440 | features->device_type |= WACOM_DEVICETYPE_PEN; |
441 | else if (finger) |
442 | features->device_type |= WACOM_DEVICETYPE_TOUCH; |
443 | else |
444 | return; |
445 | |
446 | wacom_hid_usage_quirk(hdev, field, usage); |
447 | |
448 | switch (equivalent_usage) { |
449 | case HID_GD_X: |
450 | features->x_max = field->logical_maximum; |
451 | if (finger) { |
452 | features->x_phy = field->physical_maximum; |
453 | if ((features->type != BAMBOO_PT) && |
454 | (features->type != BAMBOO_TOUCH)) { |
455 | features->unit = field->unit; |
456 | features->unitExpo = field->unit_exponent; |
457 | } |
458 | } |
459 | break; |
460 | case HID_GD_Y: |
461 | features->y_max = field->logical_maximum; |
462 | if (finger) { |
463 | features->y_phy = field->physical_maximum; |
464 | if ((features->type != BAMBOO_PT) && |
465 | (features->type != BAMBOO_TOUCH)) { |
466 | features->unit = field->unit; |
467 | features->unitExpo = field->unit_exponent; |
468 | } |
469 | } |
470 | break; |
471 | case HID_DG_TIPPRESSURE: |
472 | if (pen) |
473 | features->pressure_max = field->logical_maximum; |
474 | break; |
475 | } |
476 | |
477 | if (features->type == HID_GENERIC) |
478 | wacom_wac_usage_mapping(hdev, field, usage); |
479 | } |
480 | |
481 | static void wacom_post_parse_hid(struct hid_device *hdev, |
482 | struct wacom_features *features) |
483 | { |
484 | struct wacom *wacom = hid_get_drvdata(hdev); |
485 | struct wacom_wac *wacom_wac = &wacom->wacom_wac; |
486 | |
487 | if (features->type == HID_GENERIC) { |
488 | /* Any last-minute generic device setup */ |
489 | if (wacom_wac->has_mode_change) { |
490 | if (wacom_wac->is_direct_mode) |
491 | features->device_type |= WACOM_DEVICETYPE_DIRECT; |
492 | else |
493 | features->device_type &= ~WACOM_DEVICETYPE_DIRECT; |
494 | } |
495 | |
496 | if (features->touch_max > 1) { |
497 | if (features->device_type & WACOM_DEVICETYPE_DIRECT) |
498 | input_mt_init_slots(dev: wacom_wac->touch_input, |
499 | num_slots: wacom_wac->features.touch_max, |
500 | INPUT_MT_DIRECT); |
501 | else |
502 | input_mt_init_slots(dev: wacom_wac->touch_input, |
503 | num_slots: wacom_wac->features.touch_max, |
504 | INPUT_MT_POINTER); |
505 | } |
506 | } |
507 | } |
508 | |
509 | static void wacom_parse_hid(struct hid_device *hdev, |
510 | struct wacom_features *features) |
511 | { |
512 | struct hid_report_enum *rep_enum; |
513 | struct hid_report *hreport; |
514 | int i, j; |
515 | |
516 | /* check features first */ |
517 | rep_enum = &hdev->report_enum[HID_FEATURE_REPORT]; |
518 | list_for_each_entry(hreport, &rep_enum->report_list, list) { |
519 | for (i = 0; i < hreport->maxfield; i++) { |
520 | /* Ignore if report count is out of bounds. */ |
521 | if (hreport->field[i]->report_count < 1) |
522 | continue; |
523 | |
524 | for (j = 0; j < hreport->field[i]->maxusage; j++) { |
525 | wacom_feature_mapping(hdev, field: hreport->field[i], |
526 | usage: hreport->field[i]->usage + j); |
527 | } |
528 | } |
529 | } |
530 | |
531 | /* now check the input usages */ |
532 | rep_enum = &hdev->report_enum[HID_INPUT_REPORT]; |
533 | list_for_each_entry(hreport, &rep_enum->report_list, list) { |
534 | |
535 | if (!hreport->maxfield) |
536 | continue; |
537 | |
538 | for (i = 0; i < hreport->maxfield; i++) |
539 | for (j = 0; j < hreport->field[i]->maxusage; j++) |
540 | wacom_usage_mapping(hdev, field: hreport->field[i], |
541 | usage: hreport->field[i]->usage + j); |
542 | } |
543 | |
544 | wacom_post_parse_hid(hdev, features); |
545 | } |
546 | |
547 | static int wacom_hid_set_device_mode(struct hid_device *hdev) |
548 | { |
549 | struct wacom *wacom = hid_get_drvdata(hdev); |
550 | struct hid_data *hid_data = &wacom->wacom_wac.hid_data; |
551 | struct hid_report *r; |
552 | struct hid_report_enum *re; |
553 | |
554 | if (hid_data->inputmode < 0) |
555 | return 0; |
556 | |
557 | re = &(hdev->report_enum[HID_FEATURE_REPORT]); |
558 | r = re->report_id_hash[hid_data->inputmode]; |
559 | if (r) { |
560 | r->field[0]->value[hid_data->inputmode_index] = 2; |
561 | hid_hw_request(hdev, report: r, reqtype: HID_REQ_SET_REPORT); |
562 | } |
563 | return 0; |
564 | } |
565 | |
566 | static int wacom_set_device_mode(struct hid_device *hdev, |
567 | struct wacom_wac *wacom_wac) |
568 | { |
569 | u8 *rep_data; |
570 | struct hid_report *r; |
571 | struct hid_report_enum *re; |
572 | u32 length; |
573 | int error = -ENOMEM, limit = 0; |
574 | |
575 | if (wacom_wac->mode_report < 0) |
576 | return 0; |
577 | |
578 | re = &(hdev->report_enum[HID_FEATURE_REPORT]); |
579 | r = re->report_id_hash[wacom_wac->mode_report]; |
580 | if (!r) |
581 | return -EINVAL; |
582 | |
583 | rep_data = hid_alloc_report_buf(report: r, GFP_KERNEL); |
584 | if (!rep_data) |
585 | return -ENOMEM; |
586 | |
587 | length = hid_report_len(report: r); |
588 | |
589 | do { |
590 | rep_data[0] = wacom_wac->mode_report; |
591 | rep_data[1] = wacom_wac->mode_value; |
592 | |
593 | error = wacom_set_report(hdev, type: HID_FEATURE_REPORT, buf: rep_data, |
594 | size: length, retries: 1); |
595 | if (error >= 0) |
596 | error = wacom_get_report(hdev, type: HID_FEATURE_REPORT, |
597 | buf: rep_data, size: length, retries: 1); |
598 | } while (error >= 0 && |
599 | rep_data[1] != wacom_wac->mode_report && |
600 | limit++ < WAC_MSG_RETRIES); |
601 | |
602 | kfree(objp: rep_data); |
603 | |
604 | return error < 0 ? error : 0; |
605 | } |
606 | |
607 | static int wacom_bt_query_tablet_data(struct hid_device *hdev, u8 speed, |
608 | struct wacom_features *features) |
609 | { |
610 | struct wacom *wacom = hid_get_drvdata(hdev); |
611 | int ret; |
612 | u8 rep_data[2]; |
613 | |
614 | switch (features->type) { |
615 | case GRAPHIRE_BT: |
616 | rep_data[0] = 0x03; |
617 | rep_data[1] = 0x00; |
618 | ret = wacom_set_report(hdev, type: HID_FEATURE_REPORT, buf: rep_data, size: 2, |
619 | retries: 3); |
620 | |
621 | if (ret >= 0) { |
622 | rep_data[0] = speed == 0 ? 0x05 : 0x06; |
623 | rep_data[1] = 0x00; |
624 | |
625 | ret = wacom_set_report(hdev, type: HID_FEATURE_REPORT, |
626 | buf: rep_data, size: 2, retries: 3); |
627 | |
628 | if (ret >= 0) { |
629 | wacom->wacom_wac.bt_high_speed = speed; |
630 | return 0; |
631 | } |
632 | } |
633 | |
634 | /* |
635 | * Note that if the raw queries fail, it's not a hard failure |
636 | * and it is safe to continue |
637 | */ |
638 | hid_warn(hdev, "failed to poke device, command %d, err %d\n" , |
639 | rep_data[0], ret); |
640 | break; |
641 | case INTUOS4WL: |
642 | if (speed == 1) |
643 | wacom->wacom_wac.bt_features &= ~0x20; |
644 | else |
645 | wacom->wacom_wac.bt_features |= 0x20; |
646 | |
647 | rep_data[0] = 0x03; |
648 | rep_data[1] = wacom->wacom_wac.bt_features; |
649 | |
650 | ret = wacom_set_report(hdev, type: HID_FEATURE_REPORT, buf: rep_data, size: 2, |
651 | retries: 1); |
652 | if (ret >= 0) |
653 | wacom->wacom_wac.bt_high_speed = speed; |
654 | break; |
655 | } |
656 | |
657 | return 0; |
658 | } |
659 | |
660 | /* |
661 | * Switch the tablet into its most-capable mode. Wacom tablets are |
662 | * typically configured to power-up in a mode which sends mouse-like |
663 | * reports to the OS. To get absolute position, pressure data, etc. |
664 | * from the tablet, it is necessary to switch the tablet out of this |
665 | * mode and into one which sends the full range of tablet data. |
666 | */ |
667 | static int _wacom_query_tablet_data(struct wacom *wacom) |
668 | { |
669 | struct hid_device *hdev = wacom->hdev; |
670 | struct wacom_wac *wacom_wac = &wacom->wacom_wac; |
671 | struct wacom_features *features = &wacom_wac->features; |
672 | |
673 | if (hdev->bus == BUS_BLUETOOTH) |
674 | return wacom_bt_query_tablet_data(hdev, speed: 1, features); |
675 | |
676 | if (features->type != HID_GENERIC) { |
677 | if (features->device_type & WACOM_DEVICETYPE_TOUCH) { |
678 | if (features->type > TABLETPC) { |
679 | /* MT Tablet PC touch */ |
680 | wacom_wac->mode_report = 3; |
681 | wacom_wac->mode_value = 4; |
682 | } else if (features->type == WACOM_24HDT) { |
683 | wacom_wac->mode_report = 18; |
684 | wacom_wac->mode_value = 2; |
685 | } else if (features->type == WACOM_27QHDT) { |
686 | wacom_wac->mode_report = 131; |
687 | wacom_wac->mode_value = 2; |
688 | } else if (features->type == BAMBOO_PAD) { |
689 | wacom_wac->mode_report = 2; |
690 | wacom_wac->mode_value = 2; |
691 | } |
692 | } else if (features->device_type & WACOM_DEVICETYPE_PEN) { |
693 | if (features->type <= BAMBOO_PT) { |
694 | wacom_wac->mode_report = 2; |
695 | wacom_wac->mode_value = 2; |
696 | } |
697 | } |
698 | } |
699 | |
700 | wacom_set_device_mode(hdev, wacom_wac); |
701 | |
702 | if (features->type == HID_GENERIC) |
703 | return wacom_hid_set_device_mode(hdev); |
704 | |
705 | return 0; |
706 | } |
707 | |
708 | static void wacom_retrieve_hid_descriptor(struct hid_device *hdev, |
709 | struct wacom_features *features) |
710 | { |
711 | struct wacom *wacom = hid_get_drvdata(hdev); |
712 | struct usb_interface *intf = wacom->intf; |
713 | |
714 | /* default features */ |
715 | features->x_fuzz = 4; |
716 | features->y_fuzz = 4; |
717 | features->pressure_fuzz = 0; |
718 | features->distance_fuzz = 1; |
719 | features->tilt_fuzz = 1; |
720 | |
721 | /* |
722 | * The wireless device HID is basic and layout conflicts with |
723 | * other tablets (monitor and touch interface can look like pen). |
724 | * Skip the query for this type and modify defaults based on |
725 | * interface number. |
726 | */ |
727 | if (features->type == WIRELESS && intf) { |
728 | if (intf->cur_altsetting->desc.bInterfaceNumber == 0) |
729 | features->device_type = WACOM_DEVICETYPE_WL_MONITOR; |
730 | else |
731 | features->device_type = WACOM_DEVICETYPE_NONE; |
732 | return; |
733 | } |
734 | |
735 | wacom_parse_hid(hdev, features); |
736 | } |
737 | |
738 | struct wacom_hdev_data { |
739 | struct list_head list; |
740 | struct kref kref; |
741 | struct hid_device *dev; |
742 | struct wacom_shared shared; |
743 | }; |
744 | |
745 | static LIST_HEAD(wacom_udev_list); |
746 | static DEFINE_MUTEX(wacom_udev_list_lock); |
747 | |
748 | static bool wacom_are_sibling(struct hid_device *hdev, |
749 | struct hid_device *sibling) |
750 | { |
751 | struct wacom *wacom = hid_get_drvdata(hdev); |
752 | struct wacom_features *features = &wacom->wacom_wac.features; |
753 | struct wacom *sibling_wacom = hid_get_drvdata(hdev: sibling); |
754 | struct wacom_features *sibling_features = &sibling_wacom->wacom_wac.features; |
755 | __u32 oVid = features->oVid ? features->oVid : hdev->vendor; |
756 | __u32 oPid = features->oPid ? features->oPid : hdev->product; |
757 | |
758 | /* The defined oVid/oPid must match that of the sibling */ |
759 | if (features->oVid != HID_ANY_ID && sibling->vendor != oVid) |
760 | return false; |
761 | if (features->oPid != HID_ANY_ID && sibling->product != oPid) |
762 | return false; |
763 | |
764 | /* |
765 | * Devices with the same VID/PID must share the same physical |
766 | * device path, while those with different VID/PID must share |
767 | * the same physical parent device path. |
768 | */ |
769 | if (hdev->vendor == sibling->vendor && hdev->product == sibling->product) { |
770 | if (!hid_compare_device_paths(hdev_a: hdev, hdev_b: sibling, separator: '/')) |
771 | return false; |
772 | } else { |
773 | if (!hid_compare_device_paths(hdev_a: hdev, hdev_b: sibling, separator: '.')) |
774 | return false; |
775 | } |
776 | |
777 | /* Skip the remaining heuristics unless you are a HID_GENERIC device */ |
778 | if (features->type != HID_GENERIC) |
779 | return true; |
780 | |
781 | /* |
782 | * Direct-input devices may not be siblings of indirect-input |
783 | * devices. |
784 | */ |
785 | if ((features->device_type & WACOM_DEVICETYPE_DIRECT) && |
786 | !(sibling_features->device_type & WACOM_DEVICETYPE_DIRECT)) |
787 | return false; |
788 | |
789 | /* |
790 | * Indirect-input devices may not be siblings of direct-input |
791 | * devices. |
792 | */ |
793 | if (!(features->device_type & WACOM_DEVICETYPE_DIRECT) && |
794 | (sibling_features->device_type & WACOM_DEVICETYPE_DIRECT)) |
795 | return false; |
796 | |
797 | /* Pen devices may only be siblings of touch devices */ |
798 | if ((features->device_type & WACOM_DEVICETYPE_PEN) && |
799 | !(sibling_features->device_type & WACOM_DEVICETYPE_TOUCH)) |
800 | return false; |
801 | |
802 | /* Touch devices may only be siblings of pen devices */ |
803 | if ((features->device_type & WACOM_DEVICETYPE_TOUCH) && |
804 | !(sibling_features->device_type & WACOM_DEVICETYPE_PEN)) |
805 | return false; |
806 | |
807 | /* |
808 | * No reason could be found for these two devices to NOT be |
809 | * siblings, so there's a good chance they ARE siblings |
810 | */ |
811 | return true; |
812 | } |
813 | |
814 | static struct wacom_hdev_data *wacom_get_hdev_data(struct hid_device *hdev) |
815 | { |
816 | struct wacom_hdev_data *data; |
817 | |
818 | /* Try to find an already-probed interface from the same device */ |
819 | list_for_each_entry(data, &wacom_udev_list, list) { |
820 | if (hid_compare_device_paths(hdev_a: hdev, hdev_b: data->dev, separator: '/')) { |
821 | kref_get(kref: &data->kref); |
822 | return data; |
823 | } |
824 | } |
825 | |
826 | /* Fallback to finding devices that appear to be "siblings" */ |
827 | list_for_each_entry(data, &wacom_udev_list, list) { |
828 | if (wacom_are_sibling(hdev, sibling: data->dev)) { |
829 | kref_get(kref: &data->kref); |
830 | return data; |
831 | } |
832 | } |
833 | |
834 | return NULL; |
835 | } |
836 | |
837 | static void wacom_release_shared_data(struct kref *kref) |
838 | { |
839 | struct wacom_hdev_data *data = |
840 | container_of(kref, struct wacom_hdev_data, kref); |
841 | |
842 | mutex_lock(&wacom_udev_list_lock); |
843 | list_del(entry: &data->list); |
844 | mutex_unlock(lock: &wacom_udev_list_lock); |
845 | |
846 | kfree(objp: data); |
847 | } |
848 | |
849 | static void wacom_remove_shared_data(void *res) |
850 | { |
851 | struct wacom *wacom = res; |
852 | struct wacom_hdev_data *data; |
853 | struct wacom_wac *wacom_wac = &wacom->wacom_wac; |
854 | |
855 | if (wacom_wac->shared) { |
856 | data = container_of(wacom_wac->shared, struct wacom_hdev_data, |
857 | shared); |
858 | |
859 | if (wacom_wac->shared->touch == wacom->hdev) |
860 | wacom_wac->shared->touch = NULL; |
861 | else if (wacom_wac->shared->pen == wacom->hdev) |
862 | wacom_wac->shared->pen = NULL; |
863 | |
864 | kref_put(kref: &data->kref, release: wacom_release_shared_data); |
865 | wacom_wac->shared = NULL; |
866 | } |
867 | } |
868 | |
869 | static int wacom_add_shared_data(struct hid_device *hdev) |
870 | { |
871 | struct wacom *wacom = hid_get_drvdata(hdev); |
872 | struct wacom_wac *wacom_wac = &wacom->wacom_wac; |
873 | struct wacom_hdev_data *data; |
874 | int retval = 0; |
875 | |
876 | mutex_lock(&wacom_udev_list_lock); |
877 | |
878 | data = wacom_get_hdev_data(hdev); |
879 | if (!data) { |
880 | data = kzalloc(size: sizeof(struct wacom_hdev_data), GFP_KERNEL); |
881 | if (!data) { |
882 | mutex_unlock(lock: &wacom_udev_list_lock); |
883 | return -ENOMEM; |
884 | } |
885 | |
886 | kref_init(kref: &data->kref); |
887 | data->dev = hdev; |
888 | list_add_tail(new: &data->list, head: &wacom_udev_list); |
889 | } |
890 | |
891 | mutex_unlock(lock: &wacom_udev_list_lock); |
892 | |
893 | wacom_wac->shared = &data->shared; |
894 | |
895 | retval = devm_add_action_or_reset(&hdev->dev, wacom_remove_shared_data, wacom); |
896 | if (retval) |
897 | return retval; |
898 | |
899 | if (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH) |
900 | wacom_wac->shared->touch = hdev; |
901 | else if (wacom_wac->features.device_type & WACOM_DEVICETYPE_PEN) |
902 | wacom_wac->shared->pen = hdev; |
903 | |
904 | return retval; |
905 | } |
906 | |
907 | static int wacom_led_control(struct wacom *wacom) |
908 | { |
909 | unsigned char *buf; |
910 | int retval; |
911 | unsigned char report_id = WAC_CMD_LED_CONTROL; |
912 | int buf_size = 9; |
913 | |
914 | if (!wacom->led.groups) |
915 | return -ENOTSUPP; |
916 | |
917 | if (wacom->wacom_wac.features.type == REMOTE) |
918 | return -ENOTSUPP; |
919 | |
920 | if (wacom->wacom_wac.pid) { /* wireless connected */ |
921 | report_id = WAC_CMD_WL_LED_CONTROL; |
922 | buf_size = 13; |
923 | } |
924 | else if (wacom->wacom_wac.features.type == INTUOSP2_BT) { |
925 | report_id = WAC_CMD_WL_INTUOSP2; |
926 | buf_size = 51; |
927 | } |
928 | buf = kzalloc(size: buf_size, GFP_KERNEL); |
929 | if (!buf) |
930 | return -ENOMEM; |
931 | |
932 | if (wacom->wacom_wac.features.type == HID_GENERIC) { |
933 | buf[0] = WAC_CMD_LED_CONTROL_GENERIC; |
934 | buf[1] = wacom->led.llv; |
935 | buf[2] = wacom->led.groups[0].select & 0x03; |
936 | |
937 | } else if ((wacom->wacom_wac.features.type >= INTUOS5S && |
938 | wacom->wacom_wac.features.type <= INTUOSPL)) { |
939 | /* |
940 | * Touch Ring and crop mark LED luminance may take on |
941 | * one of four values: |
942 | * 0 = Low; 1 = Medium; 2 = High; 3 = Off |
943 | */ |
944 | int ring_led = wacom->led.groups[0].select & 0x03; |
945 | int ring_lum = (((wacom->led.llv & 0x60) >> 5) - 1) & 0x03; |
946 | int crop_lum = 0; |
947 | unsigned char led_bits = (crop_lum << 4) | (ring_lum << 2) | (ring_led); |
948 | |
949 | buf[0] = report_id; |
950 | if (wacom->wacom_wac.pid) { |
951 | wacom_get_report(hdev: wacom->hdev, type: HID_FEATURE_REPORT, |
952 | buf, size: buf_size, WAC_CMD_RETRIES); |
953 | buf[0] = report_id; |
954 | buf[4] = led_bits; |
955 | } else |
956 | buf[1] = led_bits; |
957 | } |
958 | else if (wacom->wacom_wac.features.type == INTUOSP2_BT) { |
959 | buf[0] = report_id; |
960 | buf[4] = 100; // Power Connection LED (ORANGE) |
961 | buf[5] = 100; // BT Connection LED (BLUE) |
962 | buf[6] = 100; // Paper Mode (RED?) |
963 | buf[7] = 100; // Paper Mode (GREEN?) |
964 | buf[8] = 100; // Paper Mode (BLUE?) |
965 | buf[9] = wacom->led.llv; |
966 | buf[10] = wacom->led.groups[0].select & 0x03; |
967 | } |
968 | else { |
969 | int led = wacom->led.groups[0].select | 0x4; |
970 | |
971 | if (wacom->wacom_wac.features.type == WACOM_21UX2 || |
972 | wacom->wacom_wac.features.type == WACOM_24HD) |
973 | led |= (wacom->led.groups[1].select << 4) | 0x40; |
974 | |
975 | buf[0] = report_id; |
976 | buf[1] = led; |
977 | buf[2] = wacom->led.llv; |
978 | buf[3] = wacom->led.hlv; |
979 | buf[4] = wacom->led.img_lum; |
980 | } |
981 | |
982 | retval = wacom_set_report(hdev: wacom->hdev, type: HID_FEATURE_REPORT, buf, size: buf_size, |
983 | WAC_CMD_RETRIES); |
984 | kfree(objp: buf); |
985 | |
986 | return retval; |
987 | } |
988 | |
989 | static int wacom_led_putimage(struct wacom *wacom, int button_id, u8 xfer_id, |
990 | const unsigned len, const void *img) |
991 | { |
992 | unsigned char *buf; |
993 | int i, retval; |
994 | const unsigned chunk_len = len / 4; /* 4 chunks are needed to be sent */ |
995 | |
996 | buf = kzalloc(size: chunk_len + 3 , GFP_KERNEL); |
997 | if (!buf) |
998 | return -ENOMEM; |
999 | |
1000 | /* Send 'start' command */ |
1001 | buf[0] = WAC_CMD_ICON_START; |
1002 | buf[1] = 1; |
1003 | retval = wacom_set_report(hdev: wacom->hdev, type: HID_FEATURE_REPORT, buf, size: 2, |
1004 | WAC_CMD_RETRIES); |
1005 | if (retval < 0) |
1006 | goto out; |
1007 | |
1008 | buf[0] = xfer_id; |
1009 | buf[1] = button_id & 0x07; |
1010 | for (i = 0; i < 4; i++) { |
1011 | buf[2] = i; |
1012 | memcpy(buf + 3, img + i * chunk_len, chunk_len); |
1013 | |
1014 | retval = wacom_set_report(hdev: wacom->hdev, type: HID_FEATURE_REPORT, |
1015 | buf, size: chunk_len + 3, WAC_CMD_RETRIES); |
1016 | if (retval < 0) |
1017 | break; |
1018 | } |
1019 | |
1020 | /* Send 'stop' */ |
1021 | buf[0] = WAC_CMD_ICON_START; |
1022 | buf[1] = 0; |
1023 | wacom_set_report(hdev: wacom->hdev, type: HID_FEATURE_REPORT, buf, size: 2, |
1024 | WAC_CMD_RETRIES); |
1025 | |
1026 | out: |
1027 | kfree(objp: buf); |
1028 | return retval; |
1029 | } |
1030 | |
1031 | static ssize_t wacom_led_select_store(struct device *dev, int set_id, |
1032 | const char *buf, size_t count) |
1033 | { |
1034 | struct hid_device *hdev = to_hid_device(dev); |
1035 | struct wacom *wacom = hid_get_drvdata(hdev); |
1036 | unsigned int id; |
1037 | int err; |
1038 | |
1039 | err = kstrtouint(s: buf, base: 10, res: &id); |
1040 | if (err) |
1041 | return err; |
1042 | |
1043 | mutex_lock(&wacom->lock); |
1044 | |
1045 | wacom->led.groups[set_id].select = id & 0x3; |
1046 | err = wacom_led_control(wacom); |
1047 | |
1048 | mutex_unlock(lock: &wacom->lock); |
1049 | |
1050 | return err < 0 ? err : count; |
1051 | } |
1052 | |
1053 | #define DEVICE_LED_SELECT_ATTR(SET_ID) \ |
1054 | static ssize_t wacom_led##SET_ID##_select_store(struct device *dev, \ |
1055 | struct device_attribute *attr, const char *buf, size_t count) \ |
1056 | { \ |
1057 | return wacom_led_select_store(dev, SET_ID, buf, count); \ |
1058 | } \ |
1059 | static ssize_t wacom_led##SET_ID##_select_show(struct device *dev, \ |
1060 | struct device_attribute *attr, char *buf) \ |
1061 | { \ |
1062 | struct hid_device *hdev = to_hid_device(dev);\ |
1063 | struct wacom *wacom = hid_get_drvdata(hdev); \ |
1064 | return scnprintf(buf, PAGE_SIZE, "%d\n", \ |
1065 | wacom->led.groups[SET_ID].select); \ |
1066 | } \ |
1067 | static DEVICE_ATTR(status_led##SET_ID##_select, DEV_ATTR_RW_PERM, \ |
1068 | wacom_led##SET_ID##_select_show, \ |
1069 | wacom_led##SET_ID##_select_store) |
1070 | |
1071 | DEVICE_LED_SELECT_ATTR(0); |
1072 | DEVICE_LED_SELECT_ATTR(1); |
1073 | |
1074 | static ssize_t wacom_luminance_store(struct wacom *wacom, u8 *dest, |
1075 | const char *buf, size_t count) |
1076 | { |
1077 | unsigned int value; |
1078 | int err; |
1079 | |
1080 | err = kstrtouint(s: buf, base: 10, res: &value); |
1081 | if (err) |
1082 | return err; |
1083 | |
1084 | mutex_lock(&wacom->lock); |
1085 | |
1086 | *dest = value & 0x7f; |
1087 | err = wacom_led_control(wacom); |
1088 | |
1089 | mutex_unlock(lock: &wacom->lock); |
1090 | |
1091 | return err < 0 ? err : count; |
1092 | } |
1093 | |
1094 | #define DEVICE_LUMINANCE_ATTR(name, field) \ |
1095 | static ssize_t wacom_##name##_luminance_store(struct device *dev, \ |
1096 | struct device_attribute *attr, const char *buf, size_t count) \ |
1097 | { \ |
1098 | struct hid_device *hdev = to_hid_device(dev);\ |
1099 | struct wacom *wacom = hid_get_drvdata(hdev); \ |
1100 | \ |
1101 | return wacom_luminance_store(wacom, &wacom->led.field, \ |
1102 | buf, count); \ |
1103 | } \ |
1104 | static ssize_t wacom_##name##_luminance_show(struct device *dev, \ |
1105 | struct device_attribute *attr, char *buf) \ |
1106 | { \ |
1107 | struct wacom *wacom = dev_get_drvdata(dev); \ |
1108 | return scnprintf(buf, PAGE_SIZE, "%d\n", wacom->led.field); \ |
1109 | } \ |
1110 | static DEVICE_ATTR(name##_luminance, DEV_ATTR_RW_PERM, \ |
1111 | wacom_##name##_luminance_show, \ |
1112 | wacom_##name##_luminance_store) |
1113 | |
1114 | DEVICE_LUMINANCE_ATTR(status0, llv); |
1115 | DEVICE_LUMINANCE_ATTR(status1, hlv); |
1116 | DEVICE_LUMINANCE_ATTR(buttons, img_lum); |
1117 | |
1118 | static ssize_t wacom_button_image_store(struct device *dev, int button_id, |
1119 | const char *buf, size_t count) |
1120 | { |
1121 | struct hid_device *hdev = to_hid_device(dev); |
1122 | struct wacom *wacom = hid_get_drvdata(hdev); |
1123 | int err; |
1124 | unsigned len; |
1125 | u8 xfer_id; |
1126 | |
1127 | if (hdev->bus == BUS_BLUETOOTH) { |
1128 | len = 256; |
1129 | xfer_id = WAC_CMD_ICON_BT_XFER; |
1130 | } else { |
1131 | len = 1024; |
1132 | xfer_id = WAC_CMD_ICON_XFER; |
1133 | } |
1134 | |
1135 | if (count != len) |
1136 | return -EINVAL; |
1137 | |
1138 | mutex_lock(&wacom->lock); |
1139 | |
1140 | err = wacom_led_putimage(wacom, button_id, xfer_id, len, img: buf); |
1141 | |
1142 | mutex_unlock(lock: &wacom->lock); |
1143 | |
1144 | return err < 0 ? err : count; |
1145 | } |
1146 | |
1147 | #define DEVICE_BTNIMG_ATTR(BUTTON_ID) \ |
1148 | static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev, \ |
1149 | struct device_attribute *attr, const char *buf, size_t count) \ |
1150 | { \ |
1151 | return wacom_button_image_store(dev, BUTTON_ID, buf, count); \ |
1152 | } \ |
1153 | static DEVICE_ATTR(button##BUTTON_ID##_rawimg, DEV_ATTR_WO_PERM, \ |
1154 | NULL, wacom_btnimg##BUTTON_ID##_store) |
1155 | |
1156 | DEVICE_BTNIMG_ATTR(0); |
1157 | DEVICE_BTNIMG_ATTR(1); |
1158 | DEVICE_BTNIMG_ATTR(2); |
1159 | DEVICE_BTNIMG_ATTR(3); |
1160 | DEVICE_BTNIMG_ATTR(4); |
1161 | DEVICE_BTNIMG_ATTR(5); |
1162 | DEVICE_BTNIMG_ATTR(6); |
1163 | DEVICE_BTNIMG_ATTR(7); |
1164 | |
1165 | static struct attribute *cintiq_led_attrs[] = { |
1166 | &dev_attr_status_led0_select.attr, |
1167 | &dev_attr_status_led1_select.attr, |
1168 | NULL |
1169 | }; |
1170 | |
1171 | static const struct attribute_group cintiq_led_attr_group = { |
1172 | .name = "wacom_led" , |
1173 | .attrs = cintiq_led_attrs, |
1174 | }; |
1175 | |
1176 | static struct attribute *intuos4_led_attrs[] = { |
1177 | &dev_attr_status0_luminance.attr, |
1178 | &dev_attr_status1_luminance.attr, |
1179 | &dev_attr_status_led0_select.attr, |
1180 | &dev_attr_buttons_luminance.attr, |
1181 | &dev_attr_button0_rawimg.attr, |
1182 | &dev_attr_button1_rawimg.attr, |
1183 | &dev_attr_button2_rawimg.attr, |
1184 | &dev_attr_button3_rawimg.attr, |
1185 | &dev_attr_button4_rawimg.attr, |
1186 | &dev_attr_button5_rawimg.attr, |
1187 | &dev_attr_button6_rawimg.attr, |
1188 | &dev_attr_button7_rawimg.attr, |
1189 | NULL |
1190 | }; |
1191 | |
1192 | static const struct attribute_group intuos4_led_attr_group = { |
1193 | .name = "wacom_led" , |
1194 | .attrs = intuos4_led_attrs, |
1195 | }; |
1196 | |
1197 | static struct attribute *intuos5_led_attrs[] = { |
1198 | &dev_attr_status0_luminance.attr, |
1199 | &dev_attr_status_led0_select.attr, |
1200 | NULL |
1201 | }; |
1202 | |
1203 | static const struct attribute_group intuos5_led_attr_group = { |
1204 | .name = "wacom_led" , |
1205 | .attrs = intuos5_led_attrs, |
1206 | }; |
1207 | |
1208 | static struct attribute *generic_led_attrs[] = { |
1209 | &dev_attr_status0_luminance.attr, |
1210 | &dev_attr_status_led0_select.attr, |
1211 | NULL |
1212 | }; |
1213 | |
1214 | static const struct attribute_group generic_led_attr_group = { |
1215 | .name = "wacom_led" , |
1216 | .attrs = generic_led_attrs, |
1217 | }; |
1218 | |
1219 | struct wacom_sysfs_group_devres { |
1220 | const struct attribute_group *group; |
1221 | struct kobject *root; |
1222 | }; |
1223 | |
1224 | static void wacom_devm_sysfs_group_release(struct device *dev, void *res) |
1225 | { |
1226 | struct wacom_sysfs_group_devres *devres = res; |
1227 | struct kobject *kobj = devres->root; |
1228 | |
1229 | dev_dbg(dev, "%s: dropping reference to %s\n" , |
1230 | __func__, devres->group->name); |
1231 | sysfs_remove_group(kobj, grp: devres->group); |
1232 | } |
1233 | |
1234 | static int __wacom_devm_sysfs_create_group(struct wacom *wacom, |
1235 | struct kobject *root, |
1236 | const struct attribute_group *group) |
1237 | { |
1238 | struct wacom_sysfs_group_devres *devres; |
1239 | int error; |
1240 | |
1241 | devres = devres_alloc(wacom_devm_sysfs_group_release, |
1242 | sizeof(struct wacom_sysfs_group_devres), |
1243 | GFP_KERNEL); |
1244 | if (!devres) |
1245 | return -ENOMEM; |
1246 | |
1247 | devres->group = group; |
1248 | devres->root = root; |
1249 | |
1250 | error = sysfs_create_group(kobj: devres->root, grp: group); |
1251 | if (error) { |
1252 | devres_free(res: devres); |
1253 | return error; |
1254 | } |
1255 | |
1256 | devres_add(dev: &wacom->hdev->dev, res: devres); |
1257 | |
1258 | return 0; |
1259 | } |
1260 | |
1261 | static int wacom_devm_sysfs_create_group(struct wacom *wacom, |
1262 | const struct attribute_group *group) |
1263 | { |
1264 | return __wacom_devm_sysfs_create_group(wacom, root: &wacom->hdev->dev.kobj, |
1265 | group); |
1266 | } |
1267 | |
1268 | static void wacom_devm_kfifo_release(struct device *dev, void *res) |
1269 | { |
1270 | struct kfifo_rec_ptr_2 *devres = res; |
1271 | |
1272 | kfifo_free(devres); |
1273 | } |
1274 | |
1275 | static int wacom_devm_kfifo_alloc(struct wacom *wacom) |
1276 | { |
1277 | struct wacom_wac *wacom_wac = &wacom->wacom_wac; |
1278 | struct kfifo_rec_ptr_2 *pen_fifo; |
1279 | int error; |
1280 | |
1281 | pen_fifo = devres_alloc(wacom_devm_kfifo_release, |
1282 | sizeof(struct kfifo_rec_ptr_2), |
1283 | GFP_KERNEL); |
1284 | |
1285 | if (!pen_fifo) |
1286 | return -ENOMEM; |
1287 | |
1288 | error = kfifo_alloc(pen_fifo, WACOM_PKGLEN_MAX, GFP_KERNEL); |
1289 | if (error) { |
1290 | devres_free(res: pen_fifo); |
1291 | return error; |
1292 | } |
1293 | |
1294 | devres_add(dev: &wacom->hdev->dev, res: pen_fifo); |
1295 | wacom_wac->pen_fifo = pen_fifo; |
1296 | |
1297 | return 0; |
1298 | } |
1299 | |
1300 | enum led_brightness wacom_leds_brightness_get(struct wacom_led *led) |
1301 | { |
1302 | struct wacom *wacom = led->wacom; |
1303 | |
1304 | if (wacom->led.max_hlv) |
1305 | return led->hlv * LED_FULL / wacom->led.max_hlv; |
1306 | |
1307 | if (wacom->led.max_llv) |
1308 | return led->llv * LED_FULL / wacom->led.max_llv; |
1309 | |
1310 | /* device doesn't support brightness tuning */ |
1311 | return LED_FULL; |
1312 | } |
1313 | |
1314 | static enum led_brightness __wacom_led_brightness_get(struct led_classdev *cdev) |
1315 | { |
1316 | struct wacom_led *led = container_of(cdev, struct wacom_led, cdev); |
1317 | struct wacom *wacom = led->wacom; |
1318 | |
1319 | if (wacom->led.groups[led->group].select != led->id) |
1320 | return LED_OFF; |
1321 | |
1322 | return wacom_leds_brightness_get(led); |
1323 | } |
1324 | |
1325 | static int wacom_led_brightness_set(struct led_classdev *cdev, |
1326 | enum led_brightness brightness) |
1327 | { |
1328 | struct wacom_led *led = container_of(cdev, struct wacom_led, cdev); |
1329 | struct wacom *wacom = led->wacom; |
1330 | int error; |
1331 | |
1332 | mutex_lock(&wacom->lock); |
1333 | |
1334 | if (!wacom->led.groups || (brightness == LED_OFF && |
1335 | wacom->led.groups[led->group].select != led->id)) { |
1336 | error = 0; |
1337 | goto out; |
1338 | } |
1339 | |
1340 | led->llv = wacom->led.llv = wacom->led.max_llv * brightness / LED_FULL; |
1341 | led->hlv = wacom->led.hlv = wacom->led.max_hlv * brightness / LED_FULL; |
1342 | |
1343 | wacom->led.groups[led->group].select = led->id; |
1344 | |
1345 | error = wacom_led_control(wacom); |
1346 | |
1347 | out: |
1348 | mutex_unlock(lock: &wacom->lock); |
1349 | |
1350 | return error; |
1351 | } |
1352 | |
1353 | static void wacom_led_readonly_brightness_set(struct led_classdev *cdev, |
1354 | enum led_brightness brightness) |
1355 | { |
1356 | } |
1357 | |
1358 | static int wacom_led_register_one(struct device *dev, struct wacom *wacom, |
1359 | struct wacom_led *led, unsigned int group, |
1360 | unsigned int id, bool read_only) |
1361 | { |
1362 | int error; |
1363 | char *name; |
1364 | |
1365 | name = devm_kasprintf(dev, GFP_KERNEL, |
1366 | fmt: "%s::wacom-%d.%d" , |
1367 | dev_name(dev), |
1368 | group, |
1369 | id); |
1370 | if (!name) |
1371 | return -ENOMEM; |
1372 | |
1373 | if (!read_only) { |
1374 | led->trigger.name = name; |
1375 | error = devm_led_trigger_register(dev, trigger: &led->trigger); |
1376 | if (error) { |
1377 | hid_err(wacom->hdev, |
1378 | "failed to register LED trigger %s: %d\n" , |
1379 | led->cdev.name, error); |
1380 | return error; |
1381 | } |
1382 | } |
1383 | |
1384 | led->group = group; |
1385 | led->id = id; |
1386 | led->wacom = wacom; |
1387 | led->llv = wacom->led.llv; |
1388 | led->hlv = wacom->led.hlv; |
1389 | led->cdev.name = name; |
1390 | led->cdev.max_brightness = LED_FULL; |
1391 | led->cdev.flags = LED_HW_PLUGGABLE; |
1392 | led->cdev.brightness_get = __wacom_led_brightness_get; |
1393 | if (!read_only) { |
1394 | led->cdev.brightness_set_blocking = wacom_led_brightness_set; |
1395 | led->cdev.default_trigger = led->cdev.name; |
1396 | } else { |
1397 | led->cdev.brightness_set = wacom_led_readonly_brightness_set; |
1398 | } |
1399 | |
1400 | error = devm_led_classdev_register(parent: dev, led_cdev: &led->cdev); |
1401 | if (error) { |
1402 | hid_err(wacom->hdev, |
1403 | "failed to register LED %s: %d\n" , |
1404 | led->cdev.name, error); |
1405 | led->cdev.name = NULL; |
1406 | return error; |
1407 | } |
1408 | |
1409 | return 0; |
1410 | } |
1411 | |
1412 | static void wacom_led_groups_release_one(void *data) |
1413 | { |
1414 | struct wacom_group_leds *group = data; |
1415 | |
1416 | devres_release_group(dev: group->dev, id: group); |
1417 | } |
1418 | |
1419 | static int wacom_led_groups_alloc_and_register_one(struct device *dev, |
1420 | struct wacom *wacom, |
1421 | int group_id, int count, |
1422 | bool read_only) |
1423 | { |
1424 | struct wacom_led *leds; |
1425 | int i, error; |
1426 | |
1427 | if (group_id >= wacom->led.count || count <= 0) |
1428 | return -EINVAL; |
1429 | |
1430 | if (!devres_open_group(dev, id: &wacom->led.groups[group_id], GFP_KERNEL)) |
1431 | return -ENOMEM; |
1432 | |
1433 | leds = devm_kcalloc(dev, n: count, size: sizeof(struct wacom_led), GFP_KERNEL); |
1434 | if (!leds) { |
1435 | error = -ENOMEM; |
1436 | goto err; |
1437 | } |
1438 | |
1439 | wacom->led.groups[group_id].leds = leds; |
1440 | wacom->led.groups[group_id].count = count; |
1441 | |
1442 | for (i = 0; i < count; i++) { |
1443 | error = wacom_led_register_one(dev, wacom, led: &leds[i], |
1444 | group: group_id, id: i, read_only); |
1445 | if (error) |
1446 | goto err; |
1447 | } |
1448 | |
1449 | wacom->led.groups[group_id].dev = dev; |
1450 | |
1451 | devres_close_group(dev, id: &wacom->led.groups[group_id]); |
1452 | |
1453 | /* |
1454 | * There is a bug (?) in devm_led_classdev_register() in which its |
1455 | * increments the refcount of the parent. If the parent is an input |
1456 | * device, that means the ref count never reaches 0 when |
1457 | * devm_input_device_release() gets called. |
1458 | * This means that the LEDs are still there after disconnect. |
1459 | * Manually force the release of the group so that the leds are released |
1460 | * once we are done using them. |
1461 | */ |
1462 | error = devm_add_action_or_reset(&wacom->hdev->dev, |
1463 | wacom_led_groups_release_one, |
1464 | &wacom->led.groups[group_id]); |
1465 | if (error) |
1466 | return error; |
1467 | |
1468 | return 0; |
1469 | |
1470 | err: |
1471 | devres_release_group(dev, id: &wacom->led.groups[group_id]); |
1472 | return error; |
1473 | } |
1474 | |
1475 | struct wacom_led *wacom_led_find(struct wacom *wacom, unsigned int group_id, |
1476 | unsigned int id) |
1477 | { |
1478 | struct wacom_group_leds *group; |
1479 | |
1480 | if (group_id >= wacom->led.count) |
1481 | return NULL; |
1482 | |
1483 | group = &wacom->led.groups[group_id]; |
1484 | |
1485 | if (!group->leds) |
1486 | return NULL; |
1487 | |
1488 | id %= group->count; |
1489 | |
1490 | return &group->leds[id]; |
1491 | } |
1492 | |
1493 | /* |
1494 | * wacom_led_next: gives the next available led with a wacom trigger. |
1495 | * |
1496 | * returns the next available struct wacom_led which has its default trigger |
1497 | * or the current one if none is available. |
1498 | */ |
1499 | struct wacom_led *wacom_led_next(struct wacom *wacom, struct wacom_led *cur) |
1500 | { |
1501 | struct wacom_led *next_led; |
1502 | int group, next; |
1503 | |
1504 | if (!wacom || !cur) |
1505 | return NULL; |
1506 | |
1507 | group = cur->group; |
1508 | next = cur->id; |
1509 | |
1510 | do { |
1511 | next_led = wacom_led_find(wacom, group_id: group, id: ++next); |
1512 | if (!next_led || next_led == cur) |
1513 | return next_led; |
1514 | } while (next_led->cdev.trigger != &next_led->trigger); |
1515 | |
1516 | return next_led; |
1517 | } |
1518 | |
1519 | static void wacom_led_groups_release(void *data) |
1520 | { |
1521 | struct wacom *wacom = data; |
1522 | |
1523 | wacom->led.groups = NULL; |
1524 | wacom->led.count = 0; |
1525 | } |
1526 | |
1527 | static int wacom_led_groups_allocate(struct wacom *wacom, int count) |
1528 | { |
1529 | struct device *dev = &wacom->hdev->dev; |
1530 | struct wacom_group_leds *groups; |
1531 | int error; |
1532 | |
1533 | groups = devm_kcalloc(dev, n: count, size: sizeof(struct wacom_group_leds), |
1534 | GFP_KERNEL); |
1535 | if (!groups) |
1536 | return -ENOMEM; |
1537 | |
1538 | error = devm_add_action_or_reset(dev, wacom_led_groups_release, wacom); |
1539 | if (error) |
1540 | return error; |
1541 | |
1542 | wacom->led.groups = groups; |
1543 | wacom->led.count = count; |
1544 | |
1545 | return 0; |
1546 | } |
1547 | |
1548 | static int wacom_leds_alloc_and_register(struct wacom *wacom, int group_count, |
1549 | int led_per_group, bool read_only) |
1550 | { |
1551 | struct device *dev; |
1552 | int i, error; |
1553 | |
1554 | if (!wacom->wacom_wac.pad_input) |
1555 | return -EINVAL; |
1556 | |
1557 | dev = &wacom->wacom_wac.pad_input->dev; |
1558 | |
1559 | error = wacom_led_groups_allocate(wacom, count: group_count); |
1560 | if (error) |
1561 | return error; |
1562 | |
1563 | for (i = 0; i < group_count; i++) { |
1564 | error = wacom_led_groups_alloc_and_register_one(dev, wacom, group_id: i, |
1565 | count: led_per_group, |
1566 | read_only); |
1567 | if (error) |
1568 | return error; |
1569 | } |
1570 | |
1571 | return 0; |
1572 | } |
1573 | |
1574 | int wacom_initialize_leds(struct wacom *wacom) |
1575 | { |
1576 | int error; |
1577 | |
1578 | if (!(wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD)) |
1579 | return 0; |
1580 | |
1581 | /* Initialize default values */ |
1582 | switch (wacom->wacom_wac.features.type) { |
1583 | case HID_GENERIC: |
1584 | if (!wacom->generic_has_leds) |
1585 | return 0; |
1586 | wacom->led.llv = 100; |
1587 | wacom->led.max_llv = 100; |
1588 | |
1589 | error = wacom_leds_alloc_and_register(wacom, group_count: 1, led_per_group: 4, read_only: false); |
1590 | if (error) { |
1591 | hid_err(wacom->hdev, |
1592 | "cannot create leds err: %d\n" , error); |
1593 | return error; |
1594 | } |
1595 | |
1596 | error = wacom_devm_sysfs_create_group(wacom, |
1597 | group: &generic_led_attr_group); |
1598 | break; |
1599 | |
1600 | case INTUOS4S: |
1601 | case INTUOS4: |
1602 | case INTUOS4WL: |
1603 | case INTUOS4L: |
1604 | wacom->led.llv = 10; |
1605 | wacom->led.hlv = 20; |
1606 | wacom->led.max_llv = 127; |
1607 | wacom->led.max_hlv = 127; |
1608 | wacom->led.img_lum = 10; |
1609 | |
1610 | error = wacom_leds_alloc_and_register(wacom, group_count: 1, led_per_group: 4, read_only: false); |
1611 | if (error) { |
1612 | hid_err(wacom->hdev, |
1613 | "cannot create leds err: %d\n" , error); |
1614 | return error; |
1615 | } |
1616 | |
1617 | error = wacom_devm_sysfs_create_group(wacom, |
1618 | group: &intuos4_led_attr_group); |
1619 | break; |
1620 | |
1621 | case WACOM_24HD: |
1622 | case WACOM_21UX2: |
1623 | wacom->led.llv = 0; |
1624 | wacom->led.hlv = 0; |
1625 | wacom->led.img_lum = 0; |
1626 | |
1627 | error = wacom_leds_alloc_and_register(wacom, group_count: 2, led_per_group: 4, read_only: false); |
1628 | if (error) { |
1629 | hid_err(wacom->hdev, |
1630 | "cannot create leds err: %d\n" , error); |
1631 | return error; |
1632 | } |
1633 | |
1634 | error = wacom_devm_sysfs_create_group(wacom, |
1635 | group: &cintiq_led_attr_group); |
1636 | break; |
1637 | |
1638 | case INTUOS5S: |
1639 | case INTUOS5: |
1640 | case INTUOS5L: |
1641 | case INTUOSPS: |
1642 | case INTUOSPM: |
1643 | case INTUOSPL: |
1644 | wacom->led.llv = 32; |
1645 | wacom->led.max_llv = 96; |
1646 | |
1647 | error = wacom_leds_alloc_and_register(wacom, group_count: 1, led_per_group: 4, read_only: false); |
1648 | if (error) { |
1649 | hid_err(wacom->hdev, |
1650 | "cannot create leds err: %d\n" , error); |
1651 | return error; |
1652 | } |
1653 | |
1654 | error = wacom_devm_sysfs_create_group(wacom, |
1655 | group: &intuos5_led_attr_group); |
1656 | break; |
1657 | |
1658 | case INTUOSP2_BT: |
1659 | wacom->led.llv = 50; |
1660 | wacom->led.max_llv = 100; |
1661 | error = wacom_leds_alloc_and_register(wacom, group_count: 1, led_per_group: 4, read_only: false); |
1662 | if (error) { |
1663 | hid_err(wacom->hdev, |
1664 | "cannot create leds err: %d\n" , error); |
1665 | return error; |
1666 | } |
1667 | return 0; |
1668 | |
1669 | case REMOTE: |
1670 | wacom->led.llv = 255; |
1671 | wacom->led.max_llv = 255; |
1672 | error = wacom_led_groups_allocate(wacom, count: 5); |
1673 | if (error) { |
1674 | hid_err(wacom->hdev, |
1675 | "cannot create leds err: %d\n" , error); |
1676 | return error; |
1677 | } |
1678 | return 0; |
1679 | |
1680 | default: |
1681 | return 0; |
1682 | } |
1683 | |
1684 | if (error) { |
1685 | hid_err(wacom->hdev, |
1686 | "cannot create sysfs group err: %d\n" , error); |
1687 | return error; |
1688 | } |
1689 | |
1690 | return 0; |
1691 | } |
1692 | |
1693 | static void wacom_init_work(struct work_struct *work) |
1694 | { |
1695 | struct wacom *wacom = container_of(work, struct wacom, init_work.work); |
1696 | |
1697 | _wacom_query_tablet_data(wacom); |
1698 | wacom_led_control(wacom); |
1699 | } |
1700 | |
1701 | static void wacom_query_tablet_data(struct wacom *wacom) |
1702 | { |
1703 | schedule_delayed_work(dwork: &wacom->init_work, delay: msecs_to_jiffies(m: 1000)); |
1704 | } |
1705 | |
1706 | static enum power_supply_property wacom_battery_props[] = { |
1707 | POWER_SUPPLY_PROP_MODEL_NAME, |
1708 | POWER_SUPPLY_PROP_PRESENT, |
1709 | POWER_SUPPLY_PROP_STATUS, |
1710 | POWER_SUPPLY_PROP_SCOPE, |
1711 | POWER_SUPPLY_PROP_CAPACITY |
1712 | }; |
1713 | |
1714 | static int wacom_battery_get_property(struct power_supply *psy, |
1715 | enum power_supply_property psp, |
1716 | union power_supply_propval *val) |
1717 | { |
1718 | struct wacom_battery *battery = power_supply_get_drvdata(psy); |
1719 | int ret = 0; |
1720 | |
1721 | switch (psp) { |
1722 | case POWER_SUPPLY_PROP_MODEL_NAME: |
1723 | val->strval = battery->wacom->wacom_wac.name; |
1724 | break; |
1725 | case POWER_SUPPLY_PROP_PRESENT: |
1726 | val->intval = battery->bat_connected; |
1727 | break; |
1728 | case POWER_SUPPLY_PROP_SCOPE: |
1729 | val->intval = POWER_SUPPLY_SCOPE_DEVICE; |
1730 | break; |
1731 | case POWER_SUPPLY_PROP_CAPACITY: |
1732 | val->intval = battery->battery_capacity; |
1733 | break; |
1734 | case POWER_SUPPLY_PROP_STATUS: |
1735 | if (battery->bat_status != WACOM_POWER_SUPPLY_STATUS_AUTO) |
1736 | val->intval = battery->bat_status; |
1737 | else if (battery->bat_charging) |
1738 | val->intval = POWER_SUPPLY_STATUS_CHARGING; |
1739 | else if (battery->battery_capacity == 100 && |
1740 | battery->ps_connected) |
1741 | val->intval = POWER_SUPPLY_STATUS_FULL; |
1742 | else if (battery->ps_connected) |
1743 | val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; |
1744 | else |
1745 | val->intval = POWER_SUPPLY_STATUS_DISCHARGING; |
1746 | break; |
1747 | default: |
1748 | ret = -EINVAL; |
1749 | break; |
1750 | } |
1751 | |
1752 | return ret; |
1753 | } |
1754 | |
1755 | static int __wacom_initialize_battery(struct wacom *wacom, |
1756 | struct wacom_battery *battery) |
1757 | { |
1758 | static atomic_t battery_no = ATOMIC_INIT(0); |
1759 | struct device *dev = &wacom->hdev->dev; |
1760 | struct power_supply_config psy_cfg = { .drv_data = battery, }; |
1761 | struct power_supply *ps_bat; |
1762 | struct power_supply_desc *bat_desc = &battery->bat_desc; |
1763 | unsigned long n; |
1764 | int error; |
1765 | |
1766 | if (!devres_open_group(dev, id: bat_desc, GFP_KERNEL)) |
1767 | return -ENOMEM; |
1768 | |
1769 | battery->wacom = wacom; |
1770 | |
1771 | n = atomic_inc_return(v: &battery_no) - 1; |
1772 | |
1773 | bat_desc->properties = wacom_battery_props; |
1774 | bat_desc->num_properties = ARRAY_SIZE(wacom_battery_props); |
1775 | bat_desc->get_property = wacom_battery_get_property; |
1776 | sprintf(buf: battery->bat_name, fmt: "wacom_battery_%ld" , n); |
1777 | bat_desc->name = battery->bat_name; |
1778 | bat_desc->type = POWER_SUPPLY_TYPE_BATTERY; |
1779 | bat_desc->use_for_apm = 0; |
1780 | |
1781 | ps_bat = devm_power_supply_register(parent: dev, desc: bat_desc, cfg: &psy_cfg); |
1782 | if (IS_ERR(ptr: ps_bat)) { |
1783 | error = PTR_ERR(ptr: ps_bat); |
1784 | goto err; |
1785 | } |
1786 | |
1787 | power_supply_powers(psy: ps_bat, dev: &wacom->hdev->dev); |
1788 | |
1789 | battery->battery = ps_bat; |
1790 | |
1791 | devres_close_group(dev, id: bat_desc); |
1792 | return 0; |
1793 | |
1794 | err: |
1795 | devres_release_group(dev, id: bat_desc); |
1796 | return error; |
1797 | } |
1798 | |
1799 | static int wacom_initialize_battery(struct wacom *wacom) |
1800 | { |
1801 | if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) |
1802 | return __wacom_initialize_battery(wacom, battery: &wacom->battery); |
1803 | |
1804 | return 0; |
1805 | } |
1806 | |
1807 | static void wacom_destroy_battery(struct wacom *wacom) |
1808 | { |
1809 | if (wacom->battery.battery) { |
1810 | devres_release_group(dev: &wacom->hdev->dev, |
1811 | id: &wacom->battery.bat_desc); |
1812 | wacom->battery.battery = NULL; |
1813 | } |
1814 | } |
1815 | |
1816 | static ssize_t wacom_show_speed(struct device *dev, |
1817 | struct device_attribute |
1818 | *attr, char *buf) |
1819 | { |
1820 | struct hid_device *hdev = to_hid_device(dev); |
1821 | struct wacom *wacom = hid_get_drvdata(hdev); |
1822 | |
1823 | return sysfs_emit(buf, fmt: "%i\n" , wacom->wacom_wac.bt_high_speed); |
1824 | } |
1825 | |
1826 | static ssize_t wacom_store_speed(struct device *dev, |
1827 | struct device_attribute *attr, |
1828 | const char *buf, size_t count) |
1829 | { |
1830 | struct hid_device *hdev = to_hid_device(dev); |
1831 | struct wacom *wacom = hid_get_drvdata(hdev); |
1832 | u8 new_speed; |
1833 | |
1834 | if (kstrtou8(s: buf, base: 0, res: &new_speed)) |
1835 | return -EINVAL; |
1836 | |
1837 | if (new_speed != 0 && new_speed != 1) |
1838 | return -EINVAL; |
1839 | |
1840 | wacom_bt_query_tablet_data(hdev, speed: new_speed, features: &wacom->wacom_wac.features); |
1841 | |
1842 | return count; |
1843 | } |
1844 | |
1845 | static DEVICE_ATTR(speed, DEV_ATTR_RW_PERM, |
1846 | wacom_show_speed, wacom_store_speed); |
1847 | |
1848 | |
1849 | static ssize_t wacom_show_remote_mode(struct kobject *kobj, |
1850 | struct kobj_attribute *kattr, |
1851 | char *buf, int index) |
1852 | { |
1853 | struct device *dev = kobj_to_dev(kobj->parent); |
1854 | struct hid_device *hdev = to_hid_device(dev); |
1855 | struct wacom *wacom = hid_get_drvdata(hdev); |
1856 | u8 mode; |
1857 | |
1858 | mode = wacom->led.groups[index].select; |
1859 | return sprintf(buf, fmt: "%d\n" , mode < 3 ? mode : -1); |
1860 | } |
1861 | |
1862 | #define DEVICE_EKR_ATTR_GROUP(SET_ID) \ |
1863 | static ssize_t wacom_show_remote##SET_ID##_mode(struct kobject *kobj, \ |
1864 | struct kobj_attribute *kattr, char *buf) \ |
1865 | { \ |
1866 | return wacom_show_remote_mode(kobj, kattr, buf, SET_ID); \ |
1867 | } \ |
1868 | static struct kobj_attribute remote##SET_ID##_mode_attr = { \ |
1869 | .attr = {.name = "remote_mode", \ |
1870 | .mode = DEV_ATTR_RO_PERM}, \ |
1871 | .show = wacom_show_remote##SET_ID##_mode, \ |
1872 | }; \ |
1873 | static struct attribute *remote##SET_ID##_serial_attrs[] = { \ |
1874 | &remote##SET_ID##_mode_attr.attr, \ |
1875 | NULL \ |
1876 | }; \ |
1877 | static const struct attribute_group remote##SET_ID##_serial_group = { \ |
1878 | .name = NULL, \ |
1879 | .attrs = remote##SET_ID##_serial_attrs, \ |
1880 | } |
1881 | |
1882 | DEVICE_EKR_ATTR_GROUP(0); |
1883 | DEVICE_EKR_ATTR_GROUP(1); |
1884 | DEVICE_EKR_ATTR_GROUP(2); |
1885 | DEVICE_EKR_ATTR_GROUP(3); |
1886 | DEVICE_EKR_ATTR_GROUP(4); |
1887 | |
1888 | static int wacom_remote_create_attr_group(struct wacom *wacom, __u32 serial, |
1889 | int index) |
1890 | { |
1891 | int error = 0; |
1892 | struct wacom_remote *remote = wacom->remote; |
1893 | |
1894 | remote->remotes[index].group.name = devm_kasprintf(dev: &wacom->hdev->dev, |
1895 | GFP_KERNEL, |
1896 | fmt: "%d" , serial); |
1897 | if (!remote->remotes[index].group.name) |
1898 | return -ENOMEM; |
1899 | |
1900 | error = __wacom_devm_sysfs_create_group(wacom, root: remote->remote_dir, |
1901 | group: &remote->remotes[index].group); |
1902 | if (error) { |
1903 | remote->remotes[index].group.name = NULL; |
1904 | hid_err(wacom->hdev, |
1905 | "cannot create sysfs group err: %d\n" , error); |
1906 | return error; |
1907 | } |
1908 | |
1909 | return 0; |
1910 | } |
1911 | |
1912 | static int wacom_cmd_unpair_remote(struct wacom *wacom, unsigned char selector) |
1913 | { |
1914 | const size_t buf_size = 2; |
1915 | unsigned char *buf; |
1916 | int retval; |
1917 | |
1918 | buf = kzalloc(size: buf_size, GFP_KERNEL); |
1919 | if (!buf) |
1920 | return -ENOMEM; |
1921 | |
1922 | buf[0] = WAC_CMD_DELETE_PAIRING; |
1923 | buf[1] = selector; |
1924 | |
1925 | retval = wacom_set_report(hdev: wacom->hdev, type: HID_OUTPUT_REPORT, buf, |
1926 | size: buf_size, WAC_CMD_RETRIES); |
1927 | kfree(objp: buf); |
1928 | |
1929 | return retval; |
1930 | } |
1931 | |
1932 | static ssize_t wacom_store_unpair_remote(struct kobject *kobj, |
1933 | struct kobj_attribute *attr, |
1934 | const char *buf, size_t count) |
1935 | { |
1936 | unsigned char selector = 0; |
1937 | struct device *dev = kobj_to_dev(kobj->parent); |
1938 | struct hid_device *hdev = to_hid_device(dev); |
1939 | struct wacom *wacom = hid_get_drvdata(hdev); |
1940 | int err; |
1941 | |
1942 | if (!strncmp(buf, "*\n" , 2)) { |
1943 | selector = WAC_CMD_UNPAIR_ALL; |
1944 | } else { |
1945 | hid_info(wacom->hdev, "remote: unrecognized unpair code: %s\n" , |
1946 | buf); |
1947 | return -1; |
1948 | } |
1949 | |
1950 | mutex_lock(&wacom->lock); |
1951 | |
1952 | err = wacom_cmd_unpair_remote(wacom, selector); |
1953 | mutex_unlock(lock: &wacom->lock); |
1954 | |
1955 | return err < 0 ? err : count; |
1956 | } |
1957 | |
1958 | static struct kobj_attribute unpair_remote_attr = { |
1959 | .attr = {.name = "unpair_remote" , .mode = 0200}, |
1960 | .store = wacom_store_unpair_remote, |
1961 | }; |
1962 | |
1963 | static const struct attribute *remote_unpair_attrs[] = { |
1964 | &unpair_remote_attr.attr, |
1965 | NULL |
1966 | }; |
1967 | |
1968 | static void wacom_remotes_destroy(void *data) |
1969 | { |
1970 | struct wacom *wacom = data; |
1971 | struct wacom_remote *remote = wacom->remote; |
1972 | |
1973 | if (!remote) |
1974 | return; |
1975 | |
1976 | kobject_put(kobj: remote->remote_dir); |
1977 | kfifo_free(&remote->remote_fifo); |
1978 | wacom->remote = NULL; |
1979 | } |
1980 | |
1981 | static int wacom_initialize_remotes(struct wacom *wacom) |
1982 | { |
1983 | int error = 0; |
1984 | struct wacom_remote *remote; |
1985 | int i; |
1986 | |
1987 | if (wacom->wacom_wac.features.type != REMOTE) |
1988 | return 0; |
1989 | |
1990 | remote = devm_kzalloc(dev: &wacom->hdev->dev, size: sizeof(*wacom->remote), |
1991 | GFP_KERNEL); |
1992 | if (!remote) |
1993 | return -ENOMEM; |
1994 | |
1995 | wacom->remote = remote; |
1996 | |
1997 | spin_lock_init(&remote->remote_lock); |
1998 | |
1999 | error = kfifo_alloc(&remote->remote_fifo, |
2000 | 5 * sizeof(struct wacom_remote_work_data), |
2001 | GFP_KERNEL); |
2002 | if (error) { |
2003 | hid_err(wacom->hdev, "failed allocating remote_fifo\n" ); |
2004 | return -ENOMEM; |
2005 | } |
2006 | |
2007 | remote->remotes[0].group = remote0_serial_group; |
2008 | remote->remotes[1].group = remote1_serial_group; |
2009 | remote->remotes[2].group = remote2_serial_group; |
2010 | remote->remotes[3].group = remote3_serial_group; |
2011 | remote->remotes[4].group = remote4_serial_group; |
2012 | |
2013 | remote->remote_dir = kobject_create_and_add(name: "wacom_remote" , |
2014 | parent: &wacom->hdev->dev.kobj); |
2015 | if (!remote->remote_dir) |
2016 | return -ENOMEM; |
2017 | |
2018 | error = sysfs_create_files(kobj: remote->remote_dir, attr: remote_unpair_attrs); |
2019 | |
2020 | if (error) { |
2021 | hid_err(wacom->hdev, |
2022 | "cannot create sysfs group err: %d\n" , error); |
2023 | return error; |
2024 | } |
2025 | |
2026 | for (i = 0; i < WACOM_MAX_REMOTES; i++) { |
2027 | wacom->led.groups[i].select = WACOM_STATUS_UNKNOWN; |
2028 | remote->remotes[i].serial = 0; |
2029 | } |
2030 | |
2031 | error = devm_add_action_or_reset(&wacom->hdev->dev, |
2032 | wacom_remotes_destroy, wacom); |
2033 | if (error) |
2034 | return error; |
2035 | |
2036 | return 0; |
2037 | } |
2038 | |
2039 | static struct input_dev *wacom_allocate_input(struct wacom *wacom) |
2040 | { |
2041 | struct input_dev *input_dev; |
2042 | struct hid_device *hdev = wacom->hdev; |
2043 | struct wacom_wac *wacom_wac = &(wacom->wacom_wac); |
2044 | |
2045 | input_dev = devm_input_allocate_device(&hdev->dev); |
2046 | if (!input_dev) |
2047 | return NULL; |
2048 | |
2049 | input_dev->name = wacom_wac->features.name; |
2050 | input_dev->phys = hdev->phys; |
2051 | input_dev->dev.parent = &hdev->dev; |
2052 | input_dev->open = wacom_open; |
2053 | input_dev->close = wacom_close; |
2054 | input_dev->uniq = hdev->uniq; |
2055 | input_dev->id.bustype = hdev->bus; |
2056 | input_dev->id.vendor = hdev->vendor; |
2057 | input_dev->id.product = wacom_wac->pid ? wacom_wac->pid : hdev->product; |
2058 | input_dev->id.version = hdev->version; |
2059 | input_set_drvdata(dev: input_dev, data: wacom); |
2060 | |
2061 | return input_dev; |
2062 | } |
2063 | |
2064 | static int wacom_allocate_inputs(struct wacom *wacom) |
2065 | { |
2066 | struct wacom_wac *wacom_wac = &(wacom->wacom_wac); |
2067 | |
2068 | wacom_wac->pen_input = wacom_allocate_input(wacom); |
2069 | wacom_wac->touch_input = wacom_allocate_input(wacom); |
2070 | wacom_wac->pad_input = wacom_allocate_input(wacom); |
2071 | if (!wacom_wac->pen_input || |
2072 | !wacom_wac->touch_input || |
2073 | !wacom_wac->pad_input) |
2074 | return -ENOMEM; |
2075 | |
2076 | wacom_wac->pen_input->name = wacom_wac->pen_name; |
2077 | wacom_wac->touch_input->name = wacom_wac->touch_name; |
2078 | wacom_wac->pad_input->name = wacom_wac->pad_name; |
2079 | |
2080 | return 0; |
2081 | } |
2082 | |
2083 | static int wacom_register_inputs(struct wacom *wacom) |
2084 | { |
2085 | struct input_dev *pen_input_dev, *touch_input_dev, *pad_input_dev; |
2086 | struct wacom_wac *wacom_wac = &(wacom->wacom_wac); |
2087 | int error = 0; |
2088 | |
2089 | pen_input_dev = wacom_wac->pen_input; |
2090 | touch_input_dev = wacom_wac->touch_input; |
2091 | pad_input_dev = wacom_wac->pad_input; |
2092 | |
2093 | if (!pen_input_dev || !touch_input_dev || !pad_input_dev) |
2094 | return -EINVAL; |
2095 | |
2096 | error = wacom_setup_pen_input_capabilities(input_dev: pen_input_dev, wacom_wac); |
2097 | if (error) { |
2098 | /* no pen in use on this interface */ |
2099 | input_free_device(dev: pen_input_dev); |
2100 | wacom_wac->pen_input = NULL; |
2101 | pen_input_dev = NULL; |
2102 | } else { |
2103 | error = input_register_device(pen_input_dev); |
2104 | if (error) |
2105 | goto fail; |
2106 | } |
2107 | |
2108 | error = wacom_setup_touch_input_capabilities(input_dev: touch_input_dev, wacom_wac); |
2109 | if (error) { |
2110 | /* no touch in use on this interface */ |
2111 | input_free_device(dev: touch_input_dev); |
2112 | wacom_wac->touch_input = NULL; |
2113 | touch_input_dev = NULL; |
2114 | } else { |
2115 | error = input_register_device(touch_input_dev); |
2116 | if (error) |
2117 | goto fail; |
2118 | } |
2119 | |
2120 | error = wacom_setup_pad_input_capabilities(input_dev: pad_input_dev, wacom_wac); |
2121 | if (error) { |
2122 | /* no pad events using this interface */ |
2123 | input_free_device(dev: pad_input_dev); |
2124 | wacom_wac->pad_input = NULL; |
2125 | pad_input_dev = NULL; |
2126 | } else { |
2127 | error = input_register_device(pad_input_dev); |
2128 | if (error) |
2129 | goto fail; |
2130 | } |
2131 | |
2132 | return 0; |
2133 | |
2134 | fail: |
2135 | wacom_wac->pad_input = NULL; |
2136 | wacom_wac->touch_input = NULL; |
2137 | wacom_wac->pen_input = NULL; |
2138 | return error; |
2139 | } |
2140 | |
2141 | /* |
2142 | * Not all devices report physical dimensions from HID. |
2143 | * Compute the default from hardcoded logical dimension |
2144 | * and resolution before driver overwrites them. |
2145 | */ |
2146 | static void wacom_set_default_phy(struct wacom_features *features) |
2147 | { |
2148 | if (features->x_resolution) { |
2149 | features->x_phy = (features->x_max * 100) / |
2150 | features->x_resolution; |
2151 | features->y_phy = (features->y_max * 100) / |
2152 | features->y_resolution; |
2153 | } |
2154 | } |
2155 | |
2156 | static void wacom_calculate_res(struct wacom_features *features) |
2157 | { |
2158 | /* set unit to "100th of a mm" for devices not reported by HID */ |
2159 | if (!features->unit) { |
2160 | features->unit = 0x11; |
2161 | features->unitExpo = -3; |
2162 | } |
2163 | |
2164 | features->x_resolution = wacom_calc_hid_res(logical_extents: features->x_max, |
2165 | physical_extents: features->x_phy, |
2166 | unit: features->unit, |
2167 | exponent: features->unitExpo); |
2168 | features->y_resolution = wacom_calc_hid_res(logical_extents: features->y_max, |
2169 | physical_extents: features->y_phy, |
2170 | unit: features->unit, |
2171 | exponent: features->unitExpo); |
2172 | } |
2173 | |
2174 | void wacom_battery_work(struct work_struct *work) |
2175 | { |
2176 | struct wacom *wacom = container_of(work, struct wacom, battery_work); |
2177 | |
2178 | if ((wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) && |
2179 | !wacom->battery.battery) { |
2180 | wacom_initialize_battery(wacom); |
2181 | } |
2182 | else if (!(wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) && |
2183 | wacom->battery.battery) { |
2184 | wacom_destroy_battery(wacom); |
2185 | } |
2186 | } |
2187 | |
2188 | static size_t wacom_compute_pktlen(struct hid_device *hdev) |
2189 | { |
2190 | struct hid_report_enum *report_enum; |
2191 | struct hid_report *report; |
2192 | size_t size = 0; |
2193 | |
2194 | report_enum = hdev->report_enum + HID_INPUT_REPORT; |
2195 | |
2196 | list_for_each_entry(report, &report_enum->report_list, list) { |
2197 | size_t report_size = hid_report_len(report); |
2198 | if (report_size > size) |
2199 | size = report_size; |
2200 | } |
2201 | |
2202 | return size; |
2203 | } |
2204 | |
2205 | static void wacom_update_name(struct wacom *wacom, const char *suffix) |
2206 | { |
2207 | struct wacom_wac *wacom_wac = &wacom->wacom_wac; |
2208 | struct wacom_features *features = &wacom_wac->features; |
2209 | char name[WACOM_NAME_MAX - 20]; /* Leave some room for suffixes */ |
2210 | |
2211 | /* Generic devices name unspecified */ |
2212 | if ((features->type == HID_GENERIC) && !strcmp("Wacom HID" , features->name)) { |
2213 | char *product_name = wacom->hdev->name; |
2214 | |
2215 | if (hid_is_usb(hdev: wacom->hdev)) { |
2216 | struct usb_interface *intf = to_usb_interface(wacom->hdev->dev.parent); |
2217 | struct usb_device *dev = interface_to_usbdev(intf); |
2218 | product_name = dev->product; |
2219 | } |
2220 | |
2221 | if (wacom->hdev->bus == BUS_I2C) { |
2222 | snprintf(buf: name, size: sizeof(name), fmt: "%s %X" , |
2223 | features->name, wacom->hdev->product); |
2224 | } else if (strstr(product_name, "Wacom" ) || |
2225 | strstr(product_name, "wacom" ) || |
2226 | strstr(product_name, "WACOM" )) { |
2227 | if (strscpy(p: name, q: product_name, size: sizeof(name)) < 0) { |
2228 | hid_warn(wacom->hdev, "String overflow while assembling device name" ); |
2229 | } |
2230 | } else { |
2231 | snprintf(buf: name, size: sizeof(name), fmt: "Wacom %s" , product_name); |
2232 | } |
2233 | |
2234 | /* strip out excess whitespaces */ |
2235 | while (1) { |
2236 | char *gap = strstr(name, " " ); |
2237 | if (gap == NULL) |
2238 | break; |
2239 | /* shift everything including the terminator */ |
2240 | memmove(gap, gap+1, strlen(gap)); |
2241 | } |
2242 | |
2243 | /* get rid of trailing whitespace */ |
2244 | if (name[strlen(name)-1] == ' ') |
2245 | name[strlen(name)-1] = '\0'; |
2246 | } else { |
2247 | if (strscpy(p: name, q: features->name, size: sizeof(name)) < 0) { |
2248 | hid_warn(wacom->hdev, "String overflow while assembling device name" ); |
2249 | } |
2250 | } |
2251 | |
2252 | snprintf(buf: wacom_wac->name, size: sizeof(wacom_wac->name), fmt: "%s%s" , |
2253 | name, suffix); |
2254 | |
2255 | /* Append the device type to the name */ |
2256 | snprintf(buf: wacom_wac->pen_name, size: sizeof(wacom_wac->pen_name), |
2257 | fmt: "%s%s Pen" , name, suffix); |
2258 | snprintf(buf: wacom_wac->touch_name, size: sizeof(wacom_wac->touch_name), |
2259 | fmt: "%s%s Finger" , name, suffix); |
2260 | snprintf(buf: wacom_wac->pad_name, size: sizeof(wacom_wac->pad_name), |
2261 | fmt: "%s%s Pad" , name, suffix); |
2262 | } |
2263 | |
2264 | static void wacom_release_resources(struct wacom *wacom) |
2265 | { |
2266 | struct hid_device *hdev = wacom->hdev; |
2267 | |
2268 | if (!wacom->resources) |
2269 | return; |
2270 | |
2271 | devres_release_group(dev: &hdev->dev, id: wacom); |
2272 | |
2273 | wacom->resources = false; |
2274 | |
2275 | wacom->wacom_wac.pen_input = NULL; |
2276 | wacom->wacom_wac.touch_input = NULL; |
2277 | wacom->wacom_wac.pad_input = NULL; |
2278 | } |
2279 | |
2280 | static void wacom_set_shared_values(struct wacom_wac *wacom_wac) |
2281 | { |
2282 | if (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH) { |
2283 | wacom_wac->shared->type = wacom_wac->features.type; |
2284 | wacom_wac->shared->touch_input = wacom_wac->touch_input; |
2285 | } |
2286 | |
2287 | if (wacom_wac->has_mute_touch_switch) { |
2288 | wacom_wac->shared->has_mute_touch_switch = true; |
2289 | /* Hardware touch switch may be off. Wait until |
2290 | * we know the switch state to decide is_touch_on. |
2291 | * Softkey state should be initialized to "on" to |
2292 | * match historic default. |
2293 | */ |
2294 | if (wacom_wac->is_soft_touch_switch) |
2295 | wacom_wac->shared->is_touch_on = true; |
2296 | } |
2297 | |
2298 | if (wacom_wac->shared->has_mute_touch_switch && |
2299 | wacom_wac->shared->touch_input) { |
2300 | set_bit(EV_SW, addr: wacom_wac->shared->touch_input->evbit); |
2301 | input_set_capability(dev: wacom_wac->shared->touch_input, EV_SW, |
2302 | SW_MUTE_DEVICE); |
2303 | } |
2304 | } |
2305 | |
2306 | static int wacom_parse_and_register(struct wacom *wacom, bool wireless) |
2307 | { |
2308 | struct wacom_wac *wacom_wac = &wacom->wacom_wac; |
2309 | struct wacom_features *features = &wacom_wac->features; |
2310 | struct hid_device *hdev = wacom->hdev; |
2311 | int error; |
2312 | unsigned int connect_mask = HID_CONNECT_HIDRAW; |
2313 | |
2314 | features->pktlen = wacom_compute_pktlen(hdev); |
2315 | if (features->pktlen > WACOM_PKGLEN_MAX) |
2316 | return -EINVAL; |
2317 | |
2318 | if (!devres_open_group(dev: &hdev->dev, id: wacom, GFP_KERNEL)) |
2319 | return -ENOMEM; |
2320 | |
2321 | wacom->resources = true; |
2322 | |
2323 | error = wacom_allocate_inputs(wacom); |
2324 | if (error) |
2325 | goto fail; |
2326 | |
2327 | /* |
2328 | * Bamboo Pad has a generic hid handling for the Pen, and we switch it |
2329 | * into debug mode for the touch part. |
2330 | * We ignore the other interfaces. |
2331 | */ |
2332 | if (features->type == BAMBOO_PAD) { |
2333 | if (features->pktlen == WACOM_PKGLEN_PENABLED) { |
2334 | features->type = HID_GENERIC; |
2335 | } else if ((features->pktlen != WACOM_PKGLEN_BPAD_TOUCH) && |
2336 | (features->pktlen != WACOM_PKGLEN_BPAD_TOUCH_USB)) { |
2337 | error = -ENODEV; |
2338 | goto fail; |
2339 | } |
2340 | } |
2341 | |
2342 | /* set the default size in case we do not get them from hid */ |
2343 | wacom_set_default_phy(features); |
2344 | |
2345 | /* Retrieve the physical and logical size for touch devices */ |
2346 | wacom_retrieve_hid_descriptor(hdev, features); |
2347 | wacom_setup_device_quirks(wacom); |
2348 | |
2349 | if (features->device_type == WACOM_DEVICETYPE_NONE && |
2350 | features->type != WIRELESS) { |
2351 | error = features->type == HID_GENERIC ? -ENODEV : 0; |
2352 | |
2353 | dev_warn(&hdev->dev, "Unknown device_type for '%s'. %s." , |
2354 | hdev->name, |
2355 | error ? "Ignoring" : "Assuming pen" ); |
2356 | |
2357 | if (error) |
2358 | goto fail; |
2359 | |
2360 | features->device_type |= WACOM_DEVICETYPE_PEN; |
2361 | } |
2362 | |
2363 | wacom_calculate_res(features); |
2364 | |
2365 | wacom_update_name(wacom, suffix: wireless ? " (WL)" : "" ); |
2366 | |
2367 | /* pen only Bamboo neither support touch nor pad */ |
2368 | if ((features->type == BAMBOO_PEN) && |
2369 | ((features->device_type & WACOM_DEVICETYPE_TOUCH) || |
2370 | (features->device_type & WACOM_DEVICETYPE_PAD))) { |
2371 | error = -ENODEV; |
2372 | goto fail; |
2373 | } |
2374 | |
2375 | error = wacom_add_shared_data(hdev); |
2376 | if (error) |
2377 | goto fail; |
2378 | |
2379 | error = wacom_register_inputs(wacom); |
2380 | if (error) |
2381 | goto fail; |
2382 | |
2383 | if (wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD) { |
2384 | error = wacom_initialize_leds(wacom); |
2385 | if (error) |
2386 | goto fail; |
2387 | |
2388 | error = wacom_initialize_remotes(wacom); |
2389 | if (error) |
2390 | goto fail; |
2391 | } |
2392 | |
2393 | if (features->type == HID_GENERIC) |
2394 | connect_mask |= HID_CONNECT_DRIVER; |
2395 | |
2396 | /* Regular HID work starts now */ |
2397 | error = hid_hw_start(hdev, connect_mask); |
2398 | if (error) { |
2399 | hid_err(hdev, "hw start failed\n" ); |
2400 | goto fail; |
2401 | } |
2402 | |
2403 | if (!wireless) { |
2404 | /* Note that if query fails it is not a hard failure */ |
2405 | wacom_query_tablet_data(wacom); |
2406 | } |
2407 | |
2408 | /* touch only Bamboo doesn't support pen */ |
2409 | if ((features->type == BAMBOO_TOUCH) && |
2410 | (features->device_type & WACOM_DEVICETYPE_PEN)) { |
2411 | cancel_delayed_work_sync(dwork: &wacom->init_work); |
2412 | _wacom_query_tablet_data(wacom); |
2413 | error = -ENODEV; |
2414 | goto fail_quirks; |
2415 | } |
2416 | |
2417 | if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR) { |
2418 | error = hid_hw_open(hdev); |
2419 | if (error) { |
2420 | hid_err(hdev, "hw open failed\n" ); |
2421 | goto fail_quirks; |
2422 | } |
2423 | } |
2424 | |
2425 | wacom_set_shared_values(wacom_wac); |
2426 | devres_close_group(dev: &hdev->dev, id: wacom); |
2427 | |
2428 | return 0; |
2429 | |
2430 | fail_quirks: |
2431 | hid_hw_stop(hdev); |
2432 | fail: |
2433 | wacom_release_resources(wacom); |
2434 | return error; |
2435 | } |
2436 | |
2437 | static void wacom_wireless_work(struct work_struct *work) |
2438 | { |
2439 | struct wacom *wacom = container_of(work, struct wacom, wireless_work); |
2440 | struct usb_device *usbdev = wacom->usbdev; |
2441 | struct wacom_wac *wacom_wac = &wacom->wacom_wac; |
2442 | struct hid_device *hdev1, *hdev2; |
2443 | struct wacom *wacom1, *wacom2; |
2444 | struct wacom_wac *wacom_wac1, *wacom_wac2; |
2445 | int error; |
2446 | |
2447 | /* |
2448 | * Regardless if this is a disconnect or a new tablet, |
2449 | * remove any existing input and battery devices. |
2450 | */ |
2451 | |
2452 | wacom_destroy_battery(wacom); |
2453 | |
2454 | if (!usbdev) |
2455 | return; |
2456 | |
2457 | /* Stylus interface */ |
2458 | hdev1 = usb_get_intfdata(intf: usbdev->config->interface[1]); |
2459 | wacom1 = hid_get_drvdata(hdev: hdev1); |
2460 | wacom_wac1 = &(wacom1->wacom_wac); |
2461 | wacom_release_resources(wacom: wacom1); |
2462 | |
2463 | /* Touch interface */ |
2464 | hdev2 = usb_get_intfdata(intf: usbdev->config->interface[2]); |
2465 | wacom2 = hid_get_drvdata(hdev: hdev2); |
2466 | wacom_wac2 = &(wacom2->wacom_wac); |
2467 | wacom_release_resources(wacom: wacom2); |
2468 | |
2469 | if (wacom_wac->pid == 0) { |
2470 | hid_info(wacom->hdev, "wireless tablet disconnected\n" ); |
2471 | } else { |
2472 | const struct hid_device_id *id = wacom_ids; |
2473 | |
2474 | hid_info(wacom->hdev, "wireless tablet connected with PID %x\n" , |
2475 | wacom_wac->pid); |
2476 | |
2477 | while (id->bus) { |
2478 | if (id->vendor == USB_VENDOR_ID_WACOM && |
2479 | id->product == wacom_wac->pid) |
2480 | break; |
2481 | id++; |
2482 | } |
2483 | |
2484 | if (!id->bus) { |
2485 | hid_info(wacom->hdev, "ignoring unknown PID.\n" ); |
2486 | return; |
2487 | } |
2488 | |
2489 | /* Stylus interface */ |
2490 | wacom_wac1->features = |
2491 | *((struct wacom_features *)id->driver_data); |
2492 | |
2493 | wacom_wac1->pid = wacom_wac->pid; |
2494 | hid_hw_stop(hdev: hdev1); |
2495 | error = wacom_parse_and_register(wacom: wacom1, wireless: true); |
2496 | if (error) |
2497 | goto fail; |
2498 | |
2499 | /* Touch interface */ |
2500 | if (wacom_wac1->features.touch_max || |
2501 | (wacom_wac1->features.type >= INTUOSHT && |
2502 | wacom_wac1->features.type <= BAMBOO_PT)) { |
2503 | wacom_wac2->features = |
2504 | *((struct wacom_features *)id->driver_data); |
2505 | wacom_wac2->pid = wacom_wac->pid; |
2506 | hid_hw_stop(hdev: hdev2); |
2507 | error = wacom_parse_and_register(wacom: wacom2, wireless: true); |
2508 | if (error) |
2509 | goto fail; |
2510 | } |
2511 | |
2512 | if (strscpy(p: wacom_wac->name, q: wacom_wac1->name, |
2513 | size: sizeof(wacom_wac->name)) < 0) { |
2514 | hid_warn(wacom->hdev, "String overflow while assembling device name" ); |
2515 | } |
2516 | } |
2517 | |
2518 | return; |
2519 | |
2520 | fail: |
2521 | wacom_release_resources(wacom: wacom1); |
2522 | wacom_release_resources(wacom: wacom2); |
2523 | return; |
2524 | } |
2525 | |
2526 | static void wacom_remote_destroy_battery(struct wacom *wacom, int index) |
2527 | { |
2528 | struct wacom_remote *remote = wacom->remote; |
2529 | |
2530 | if (remote->remotes[index].battery.battery) { |
2531 | devres_release_group(dev: &wacom->hdev->dev, |
2532 | id: &remote->remotes[index].battery.bat_desc); |
2533 | remote->remotes[index].battery.battery = NULL; |
2534 | remote->remotes[index].active_time = 0; |
2535 | } |
2536 | } |
2537 | |
2538 | static void wacom_remote_destroy_one(struct wacom *wacom, unsigned int index) |
2539 | { |
2540 | struct wacom_remote *remote = wacom->remote; |
2541 | u32 serial = remote->remotes[index].serial; |
2542 | int i; |
2543 | unsigned long flags; |
2544 | |
2545 | for (i = 0; i < WACOM_MAX_REMOTES; i++) { |
2546 | if (remote->remotes[i].serial == serial) { |
2547 | |
2548 | spin_lock_irqsave(&remote->remote_lock, flags); |
2549 | remote->remotes[i].registered = false; |
2550 | spin_unlock_irqrestore(lock: &remote->remote_lock, flags); |
2551 | |
2552 | wacom_remote_destroy_battery(wacom, index: i); |
2553 | |
2554 | if (remote->remotes[i].group.name) |
2555 | devres_release_group(dev: &wacom->hdev->dev, |
2556 | id: &remote->remotes[i]); |
2557 | |
2558 | remote->remotes[i].serial = 0; |
2559 | remote->remotes[i].group.name = NULL; |
2560 | wacom->led.groups[i].select = WACOM_STATUS_UNKNOWN; |
2561 | } |
2562 | } |
2563 | } |
2564 | |
2565 | static int wacom_remote_create_one(struct wacom *wacom, u32 serial, |
2566 | unsigned int index) |
2567 | { |
2568 | struct wacom_remote *remote = wacom->remote; |
2569 | struct device *dev = &wacom->hdev->dev; |
2570 | int error, k; |
2571 | |
2572 | /* A remote can pair more than once with an EKR, |
2573 | * check to make sure this serial isn't already paired. |
2574 | */ |
2575 | for (k = 0; k < WACOM_MAX_REMOTES; k++) { |
2576 | if (remote->remotes[k].serial == serial) |
2577 | break; |
2578 | } |
2579 | |
2580 | if (k < WACOM_MAX_REMOTES) { |
2581 | remote->remotes[index].serial = serial; |
2582 | return 0; |
2583 | } |
2584 | |
2585 | if (!devres_open_group(dev, id: &remote->remotes[index], GFP_KERNEL)) |
2586 | return -ENOMEM; |
2587 | |
2588 | error = wacom_remote_create_attr_group(wacom, serial, index); |
2589 | if (error) |
2590 | goto fail; |
2591 | |
2592 | remote->remotes[index].input = wacom_allocate_input(wacom); |
2593 | if (!remote->remotes[index].input) { |
2594 | error = -ENOMEM; |
2595 | goto fail; |
2596 | } |
2597 | remote->remotes[index].input->uniq = remote->remotes[index].group.name; |
2598 | remote->remotes[index].input->name = wacom->wacom_wac.pad_name; |
2599 | |
2600 | if (!remote->remotes[index].input->name) { |
2601 | error = -EINVAL; |
2602 | goto fail; |
2603 | } |
2604 | |
2605 | error = wacom_setup_pad_input_capabilities(input_dev: remote->remotes[index].input, |
2606 | wacom_wac: &wacom->wacom_wac); |
2607 | if (error) |
2608 | goto fail; |
2609 | |
2610 | remote->remotes[index].serial = serial; |
2611 | |
2612 | error = input_register_device(remote->remotes[index].input); |
2613 | if (error) |
2614 | goto fail; |
2615 | |
2616 | error = wacom_led_groups_alloc_and_register_one( |
2617 | dev: &remote->remotes[index].input->dev, |
2618 | wacom, group_id: index, count: 3, read_only: true); |
2619 | if (error) |
2620 | goto fail; |
2621 | |
2622 | remote->remotes[index].registered = true; |
2623 | |
2624 | devres_close_group(dev, id: &remote->remotes[index]); |
2625 | return 0; |
2626 | |
2627 | fail: |
2628 | devres_release_group(dev, id: &remote->remotes[index]); |
2629 | remote->remotes[index].serial = 0; |
2630 | return error; |
2631 | } |
2632 | |
2633 | static int wacom_remote_attach_battery(struct wacom *wacom, int index) |
2634 | { |
2635 | struct wacom_remote *remote = wacom->remote; |
2636 | int error; |
2637 | |
2638 | if (!remote->remotes[index].registered) |
2639 | return 0; |
2640 | |
2641 | if (remote->remotes[index].battery.battery) |
2642 | return 0; |
2643 | |
2644 | if (!remote->remotes[index].active_time) |
2645 | return 0; |
2646 | |
2647 | if (wacom->led.groups[index].select == WACOM_STATUS_UNKNOWN) |
2648 | return 0; |
2649 | |
2650 | error = __wacom_initialize_battery(wacom, |
2651 | battery: &wacom->remote->remotes[index].battery); |
2652 | if (error) |
2653 | return error; |
2654 | |
2655 | return 0; |
2656 | } |
2657 | |
2658 | static void wacom_remote_work(struct work_struct *work) |
2659 | { |
2660 | struct wacom *wacom = container_of(work, struct wacom, remote_work); |
2661 | struct wacom_remote *remote = wacom->remote; |
2662 | ktime_t kt = ktime_get(); |
2663 | struct wacom_remote_work_data remote_work_data; |
2664 | unsigned long flags; |
2665 | unsigned int count; |
2666 | u32 work_serial; |
2667 | int i; |
2668 | |
2669 | spin_lock_irqsave(&remote->remote_lock, flags); |
2670 | |
2671 | count = kfifo_out(&remote->remote_fifo, &remote_work_data, |
2672 | sizeof(remote_work_data)); |
2673 | |
2674 | if (count != sizeof(remote_work_data)) { |
2675 | hid_err(wacom->hdev, |
2676 | "workitem triggered without status available\n" ); |
2677 | spin_unlock_irqrestore(lock: &remote->remote_lock, flags); |
2678 | return; |
2679 | } |
2680 | |
2681 | if (!kfifo_is_empty(&remote->remote_fifo)) |
2682 | wacom_schedule_work(wacom_wac: &wacom->wacom_wac, which: WACOM_WORKER_REMOTE); |
2683 | |
2684 | spin_unlock_irqrestore(lock: &remote->remote_lock, flags); |
2685 | |
2686 | for (i = 0; i < WACOM_MAX_REMOTES; i++) { |
2687 | work_serial = remote_work_data.remote[i].serial; |
2688 | if (work_serial) { |
2689 | |
2690 | if (kt - remote->remotes[i].active_time > WACOM_REMOTE_BATTERY_TIMEOUT |
2691 | && remote->remotes[i].active_time != 0) |
2692 | wacom_remote_destroy_battery(wacom, index: i); |
2693 | |
2694 | if (remote->remotes[i].serial == work_serial) { |
2695 | wacom_remote_attach_battery(wacom, index: i); |
2696 | continue; |
2697 | } |
2698 | |
2699 | if (remote->remotes[i].serial) |
2700 | wacom_remote_destroy_one(wacom, index: i); |
2701 | |
2702 | wacom_remote_create_one(wacom, serial: work_serial, index: i); |
2703 | |
2704 | } else if (remote->remotes[i].serial) { |
2705 | wacom_remote_destroy_one(wacom, index: i); |
2706 | } |
2707 | } |
2708 | } |
2709 | |
2710 | static void wacom_mode_change_work(struct work_struct *work) |
2711 | { |
2712 | struct wacom *wacom = container_of(work, struct wacom, mode_change_work); |
2713 | struct wacom_shared *shared = wacom->wacom_wac.shared; |
2714 | struct wacom *wacom1 = NULL; |
2715 | struct wacom *wacom2 = NULL; |
2716 | bool is_direct = wacom->wacom_wac.is_direct_mode; |
2717 | int error = 0; |
2718 | |
2719 | if (shared->pen) { |
2720 | wacom1 = hid_get_drvdata(hdev: shared->pen); |
2721 | wacom_release_resources(wacom: wacom1); |
2722 | hid_hw_stop(hdev: wacom1->hdev); |
2723 | wacom1->wacom_wac.has_mode_change = true; |
2724 | wacom1->wacom_wac.is_direct_mode = is_direct; |
2725 | } |
2726 | |
2727 | if (shared->touch) { |
2728 | wacom2 = hid_get_drvdata(hdev: shared->touch); |
2729 | wacom_release_resources(wacom: wacom2); |
2730 | hid_hw_stop(hdev: wacom2->hdev); |
2731 | wacom2->wacom_wac.has_mode_change = true; |
2732 | wacom2->wacom_wac.is_direct_mode = is_direct; |
2733 | } |
2734 | |
2735 | if (wacom1) { |
2736 | error = wacom_parse_and_register(wacom: wacom1, wireless: false); |
2737 | if (error) |
2738 | return; |
2739 | } |
2740 | |
2741 | if (wacom2) { |
2742 | error = wacom_parse_and_register(wacom: wacom2, wireless: false); |
2743 | if (error) |
2744 | return; |
2745 | } |
2746 | |
2747 | return; |
2748 | } |
2749 | |
2750 | static int wacom_probe(struct hid_device *hdev, |
2751 | const struct hid_device_id *id) |
2752 | { |
2753 | struct wacom *wacom; |
2754 | struct wacom_wac *wacom_wac; |
2755 | struct wacom_features *features; |
2756 | int error; |
2757 | |
2758 | if (!id->driver_data) |
2759 | return -EINVAL; |
2760 | |
2761 | hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; |
2762 | |
2763 | /* hid-core sets this quirk for the boot interface */ |
2764 | hdev->quirks &= ~HID_QUIRK_NOGET; |
2765 | |
2766 | wacom = devm_kzalloc(dev: &hdev->dev, size: sizeof(struct wacom), GFP_KERNEL); |
2767 | if (!wacom) |
2768 | return -ENOMEM; |
2769 | |
2770 | hid_set_drvdata(hdev, data: wacom); |
2771 | wacom->hdev = hdev; |
2772 | |
2773 | wacom_wac = &wacom->wacom_wac; |
2774 | wacom_wac->features = *((struct wacom_features *)id->driver_data); |
2775 | features = &wacom_wac->features; |
2776 | |
2777 | if (features->check_for_hid_type && features->hid_type != hdev->type) |
2778 | return -ENODEV; |
2779 | |
2780 | error = wacom_devm_kfifo_alloc(wacom); |
2781 | if (error) |
2782 | return error; |
2783 | |
2784 | wacom_wac->hid_data.inputmode = -1; |
2785 | wacom_wac->mode_report = -1; |
2786 | |
2787 | if (hid_is_usb(hdev)) { |
2788 | struct usb_interface *intf = to_usb_interface(hdev->dev.parent); |
2789 | struct usb_device *dev = interface_to_usbdev(intf); |
2790 | |
2791 | wacom->usbdev = dev; |
2792 | wacom->intf = intf; |
2793 | } |
2794 | |
2795 | mutex_init(&wacom->lock); |
2796 | INIT_DELAYED_WORK(&wacom->init_work, wacom_init_work); |
2797 | INIT_WORK(&wacom->wireless_work, wacom_wireless_work); |
2798 | INIT_WORK(&wacom->battery_work, wacom_battery_work); |
2799 | INIT_WORK(&wacom->remote_work, wacom_remote_work); |
2800 | INIT_WORK(&wacom->mode_change_work, wacom_mode_change_work); |
2801 | timer_setup(&wacom->idleprox_timer, &wacom_idleprox_timeout, TIMER_DEFERRABLE); |
2802 | |
2803 | /* ask for the report descriptor to be loaded by HID */ |
2804 | error = hid_parse(hdev); |
2805 | if (error) { |
2806 | hid_err(hdev, "parse failed\n" ); |
2807 | return error; |
2808 | } |
2809 | |
2810 | if (features->type == BOOTLOADER) { |
2811 | hid_warn(hdev, "Using device in hidraw-only mode" ); |
2812 | return hid_hw_start(hdev, HID_CONNECT_HIDRAW); |
2813 | } |
2814 | |
2815 | error = wacom_parse_and_register(wacom, wireless: false); |
2816 | if (error) |
2817 | return error; |
2818 | |
2819 | if (hdev->bus == BUS_BLUETOOTH) { |
2820 | error = device_create_file(device: &hdev->dev, entry: &dev_attr_speed); |
2821 | if (error) |
2822 | hid_warn(hdev, |
2823 | "can't create sysfs speed attribute err: %d\n" , |
2824 | error); |
2825 | } |
2826 | |
2827 | wacom_wac->probe_complete = true; |
2828 | return 0; |
2829 | } |
2830 | |
2831 | static void wacom_remove(struct hid_device *hdev) |
2832 | { |
2833 | struct wacom *wacom = hid_get_drvdata(hdev); |
2834 | struct wacom_wac *wacom_wac = &wacom->wacom_wac; |
2835 | struct wacom_features *features = &wacom_wac->features; |
2836 | |
2837 | if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR) |
2838 | hid_hw_close(hdev); |
2839 | |
2840 | hid_hw_stop(hdev); |
2841 | |
2842 | cancel_delayed_work_sync(dwork: &wacom->init_work); |
2843 | cancel_work_sync(work: &wacom->wireless_work); |
2844 | cancel_work_sync(work: &wacom->battery_work); |
2845 | cancel_work_sync(work: &wacom->remote_work); |
2846 | cancel_work_sync(work: &wacom->mode_change_work); |
2847 | del_timer_sync(timer: &wacom->idleprox_timer); |
2848 | if (hdev->bus == BUS_BLUETOOTH) |
2849 | device_remove_file(dev: &hdev->dev, attr: &dev_attr_speed); |
2850 | |
2851 | /* make sure we don't trigger the LEDs */ |
2852 | wacom_led_groups_release(data: wacom); |
2853 | |
2854 | if (wacom->wacom_wac.features.type != REMOTE) |
2855 | wacom_release_resources(wacom); |
2856 | } |
2857 | |
2858 | #ifdef CONFIG_PM |
2859 | static int wacom_resume(struct hid_device *hdev) |
2860 | { |
2861 | struct wacom *wacom = hid_get_drvdata(hdev); |
2862 | |
2863 | mutex_lock(&wacom->lock); |
2864 | |
2865 | /* switch to wacom mode first */ |
2866 | _wacom_query_tablet_data(wacom); |
2867 | wacom_led_control(wacom); |
2868 | |
2869 | mutex_unlock(lock: &wacom->lock); |
2870 | |
2871 | return 0; |
2872 | } |
2873 | |
2874 | static int wacom_reset_resume(struct hid_device *hdev) |
2875 | { |
2876 | return wacom_resume(hdev); |
2877 | } |
2878 | #endif /* CONFIG_PM */ |
2879 | |
2880 | static struct hid_driver wacom_driver = { |
2881 | .name = "wacom" , |
2882 | .id_table = wacom_ids, |
2883 | .probe = wacom_probe, |
2884 | .remove = wacom_remove, |
2885 | .report = wacom_wac_report, |
2886 | #ifdef CONFIG_PM |
2887 | .resume = wacom_resume, |
2888 | .reset_resume = wacom_reset_resume, |
2889 | #endif |
2890 | .raw_event = wacom_raw_event, |
2891 | }; |
2892 | module_hid_driver(wacom_driver); |
2893 | |
2894 | MODULE_VERSION(DRIVER_VERSION); |
2895 | MODULE_AUTHOR(DRIVER_AUTHOR); |
2896 | MODULE_DESCRIPTION(DRIVER_DESC); |
2897 | MODULE_LICENSE("GPL" ); |
2898 | |