1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * drivers/input/tablet/wacom_sys.c
5 * USB Wacom tablet support - system specific code
11 #include "wacom_wac.h"
13 #include <linux/input/mt.h>
15 #define WAC_MSG_RETRIES 5
16 #define WAC_CMD_RETRIES 10
18 #define DEV_ATTR_RW_PERM (S_IRUGO | S_IWUSR | S_IWGRP)
19 #define DEV_ATTR_WO_PERM (S_IWUSR | S_IWGRP)
20 #define DEV_ATTR_RO_PERM (S_IRUSR | S_IRGRP)
22 static int wacom_get_report(struct hid_device
*hdev
, u8 type
, u8
*buf
,
23 size_t size
, unsigned int retries
)
28 retval
= hid_hw_raw_request(hdev
, buf
[0], buf
, size
, type
,
30 } while ((retval
== -ETIMEDOUT
|| retval
== -EAGAIN
) && --retries
);
33 hid_err(hdev
, "wacom_get_report: ran out of retries "
34 "(last error = %d)\n", retval
);
39 static int wacom_set_report(struct hid_device
*hdev
, u8 type
, u8
*buf
,
40 size_t size
, unsigned int retries
)
45 retval
= hid_hw_raw_request(hdev
, buf
[0], buf
, size
, type
,
47 } while ((retval
== -ETIMEDOUT
|| retval
== -EAGAIN
) && --retries
);
50 hid_err(hdev
, "wacom_set_report: ran out of retries "
51 "(last error = %d)\n", retval
);
56 static void wacom_wac_queue_insert(struct hid_device
*hdev
,
57 struct kfifo_rec_ptr_2
*fifo
,
58 u8
*raw_data
, int size
)
62 while (kfifo_avail(fifo
) < size
) {
64 hid_warn(hdev
, "%s: kfifo has filled, starting to drop events\n", __func__
);
70 kfifo_in(fifo
, raw_data
, size
);
73 static void wacom_wac_queue_flush(struct hid_device
*hdev
,
74 struct kfifo_rec_ptr_2
*fifo
)
76 while (!kfifo_is_empty(fifo
)) {
77 u8 buf
[WACOM_PKGLEN_MAX
];
81 size
= kfifo_out(fifo
, buf
, sizeof(buf
));
82 err
= hid_report_raw_event(hdev
, HID_INPUT_REPORT
, buf
, size
, false);
84 hid_warn(hdev
, "%s: unable to flush event due to error %d\n",
90 static int wacom_wac_pen_serial_enforce(struct hid_device
*hdev
,
91 struct hid_report
*report
, u8
*raw_data
, int report_size
)
93 struct wacom
*wacom
= hid_get_drvdata(hdev
);
94 struct wacom_wac
*wacom_wac
= &wacom
->wacom_wac
;
95 struct wacom_features
*features
= &wacom_wac
->features
;
100 if (wacom_wac
->serial
[0] || !(features
->quirks
& WACOM_QUIRK_TOOLSERIAL
))
103 /* Queue events which have invalid tool type or serial number */
104 for (i
= 0; i
< report
->maxfield
; i
++) {
105 for (j
= 0; j
< report
->field
[i
]->maxusage
; j
++) {
106 struct hid_field
*field
= report
->field
[i
];
107 struct hid_usage
*usage
= &field
->usage
[j
];
108 unsigned int equivalent_usage
= wacom_equivalent_usage(usage
->hid
);
113 if (equivalent_usage
!= HID_DG_INRANGE
&&
114 equivalent_usage
!= HID_DG_TOOLSERIALNUMBER
&&
115 equivalent_usage
!= WACOM_HID_WD_SERIALHI
&&
116 equivalent_usage
!= WACOM_HID_WD_TOOLTYPE
)
119 offset
= field
->report_offset
;
120 size
= field
->report_size
;
121 value
= hid_field_extract(hdev
, raw_data
+1, offset
+ j
* size
, size
);
123 /* If we go out of range, we need to flush the queue ASAP */
124 if (equivalent_usage
== HID_DG_INRANGE
)
129 switch (equivalent_usage
) {
130 case HID_DG_TOOLSERIALNUMBER
:
131 wacom_wac
->serial
[0] = value
;
134 case WACOM_HID_WD_SERIALHI
:
135 wacom_wac
->serial
[0] |= ((__u64
)value
) << 32;
138 case WACOM_HID_WD_TOOLTYPE
:
139 wacom_wac
->id
[0] = value
;
150 wacom_wac_queue_flush(hdev
, wacom_wac
->pen_fifo
);
152 wacom_wac_queue_insert(hdev
, wacom_wac
->pen_fifo
,
153 raw_data
, report_size
);
155 return insert
&& !flush
;
158 static int wacom_raw_event(struct hid_device
*hdev
, struct hid_report
*report
,
159 u8
*raw_data
, int size
)
161 struct wacom
*wacom
= hid_get_drvdata(hdev
);
163 if (size
> WACOM_PKGLEN_MAX
)
166 if (wacom_wac_pen_serial_enforce(hdev
, report
, raw_data
, size
))
169 memcpy(wacom
->wacom_wac
.data
, raw_data
, size
);
171 wacom_wac_irq(&wacom
->wacom_wac
, size
);
176 static int wacom_open(struct input_dev
*dev
)
178 struct wacom
*wacom
= input_get_drvdata(dev
);
180 return hid_hw_open(wacom
->hdev
);
183 static void wacom_close(struct input_dev
*dev
)
185 struct wacom
*wacom
= input_get_drvdata(dev
);
188 * wacom->hdev should never be null, but surprisingly, I had the case
189 * once while unplugging the Wacom Wireless Receiver.
192 hid_hw_close(wacom
->hdev
);
196 * Calculate the resolution of the X or Y axis using hidinput_calc_abs_res.
198 static int wacom_calc_hid_res(int logical_extents
, int physical_extents
,
199 unsigned unit
, int exponent
)
201 struct hid_field field
= {
202 .logical_maximum
= logical_extents
,
203 .physical_maximum
= physical_extents
,
205 .unit_exponent
= exponent
,
208 return hidinput_calc_abs_res(&field
, ABS_X
);
211 static void wacom_hid_usage_quirk(struct hid_device
*hdev
,
212 struct hid_field
*field
, struct hid_usage
*usage
)
214 struct wacom
*wacom
= hid_get_drvdata(hdev
);
215 struct wacom_features
*features
= &wacom
->wacom_wac
.features
;
216 unsigned int equivalent_usage
= wacom_equivalent_usage(usage
->hid
);
219 * The Dell Canvas 27 needs to be switched to its vendor-defined
220 * report to provide the best resolution.
222 if (hdev
->vendor
== USB_VENDOR_ID_WACOM
&&
223 hdev
->product
== 0x4200 &&
224 field
->application
== HID_UP_MSVENDOR
) {
225 wacom
->wacom_wac
.mode_report
= field
->report
->id
;
226 wacom
->wacom_wac
.mode_value
= 2;
230 * ISDv4 devices which predate HID's adoption of the
231 * HID_DG_BARELSWITCH2 usage use 0x000D0000 in its
232 * position instead. We can accurately detect if a
233 * usage with that value should be HID_DG_BARRELSWITCH2
234 * based on the surrounding usages, which have remained
235 * constant across generations.
237 if (features
->type
== HID_GENERIC
&&
238 usage
->hid
== 0x000D0000 &&
239 field
->application
== HID_DG_PEN
&&
240 field
->physical
== HID_DG_STYLUS
) {
241 int i
= usage
->usage_index
;
243 if (i
-4 >= 0 && i
+1 < field
->maxusage
&&
244 field
->usage
[i
-4].hid
== HID_DG_TIPSWITCH
&&
245 field
->usage
[i
-3].hid
== HID_DG_BARRELSWITCH
&&
246 field
->usage
[i
-2].hid
== HID_DG_ERASER
&&
247 field
->usage
[i
-1].hid
== HID_DG_INVERT
&&
248 field
->usage
[i
+1].hid
== HID_DG_INRANGE
) {
249 usage
->hid
= HID_DG_BARRELSWITCH2
;
254 * Wacom's AES devices use different vendor-defined usages to
255 * report serial number information compared to their branded
256 * hardware. The usages are also sometimes ill-defined and do
257 * not have the correct logical min/max values set. Lets patch
258 * the descriptor to use the branded usage convention and fix
261 if (usage
->hid
== WACOM_HID_WT_SERIALNUMBER
&&
262 field
->report_size
== 16 &&
263 field
->index
+ 2 < field
->report
->maxfield
) {
264 struct hid_field
*a
= field
->report
->field
[field
->index
+ 1];
265 struct hid_field
*b
= field
->report
->field
[field
->index
+ 2];
267 if (a
->maxusage
> 0 &&
268 a
->usage
[0].hid
== HID_DG_TOOLSERIALNUMBER
&&
269 a
->report_size
== 32 &&
271 b
->usage
[0].hid
== 0xFF000000 &&
272 b
->report_size
== 8) {
273 features
->quirks
|= WACOM_QUIRK_AESPEN
;
274 usage
->hid
= WACOM_HID_WD_TOOLTYPE
;
275 field
->logical_minimum
= S16_MIN
;
276 field
->logical_maximum
= S16_MAX
;
277 a
->logical_minimum
= S32_MIN
;
278 a
->logical_maximum
= S32_MAX
;
279 b
->usage
[0].hid
= WACOM_HID_WD_SERIALHI
;
280 b
->logical_minimum
= 0;
281 b
->logical_maximum
= U8_MAX
;
285 /* 2nd-generation Intuos Pro Large has incorrect Y maximum */
286 if (hdev
->vendor
== USB_VENDOR_ID_WACOM
&&
287 hdev
->product
== 0x0358 &&
288 WACOM_PEN_FIELD(field
) &&
289 equivalent_usage
== HID_GD_Y
) {
290 field
->logical_maximum
= 43200;
294 static void wacom_feature_mapping(struct hid_device
*hdev
,
295 struct hid_field
*field
, struct hid_usage
*usage
)
297 struct wacom
*wacom
= hid_get_drvdata(hdev
);
298 struct wacom_features
*features
= &wacom
->wacom_wac
.features
;
299 struct hid_data
*hid_data
= &wacom
->wacom_wac
.hid_data
;
300 unsigned int equivalent_usage
= wacom_equivalent_usage(usage
->hid
);
305 wacom_hid_usage_quirk(hdev
, field
, usage
);
307 switch (equivalent_usage
) {
308 case WACOM_HID_WD_TOUCH_RING_SETTING
:
309 wacom
->generic_has_leds
= true;
311 case HID_DG_CONTACTMAX
:
312 /* leave touch_max as is if predefined */
313 if (!features
->touch_max
) {
315 n
= hid_report_len(field
->report
);
316 data
= hid_alloc_report_buf(field
->report
, GFP_KERNEL
);
319 data
[0] = field
->report
->id
;
320 ret
= wacom_get_report(hdev
, HID_FEATURE_REPORT
,
321 data
, n
, WAC_CMD_RETRIES
);
322 if (ret
== n
&& features
->type
== HID_GENERIC
) {
323 ret
= hid_report_raw_event(hdev
,
324 HID_FEATURE_REPORT
, data
, n
, 0);
325 } else if (ret
== 2 && features
->type
!= HID_GENERIC
) {
326 features
->touch_max
= data
[1];
328 features
->touch_max
= 16;
329 hid_warn(hdev
, "wacom_feature_mapping: "
330 "could not get HID_DG_CONTACTMAX, "
331 "defaulting to %d\n",
332 features
->touch_max
);
337 case HID_DG_INPUTMODE
:
338 /* Ignore if value index is out of bounds. */
339 if (usage
->usage_index
>= field
->report_count
) {
340 dev_err(&hdev
->dev
, "HID_DG_INPUTMODE out of range\n");
344 hid_data
->inputmode
= field
->report
->id
;
345 hid_data
->inputmode_index
= usage
->usage_index
;
348 case HID_UP_DIGITIZER
:
349 if (field
->report
->id
== 0x0B &&
350 (field
->application
== WACOM_HID_G9_PEN
||
351 field
->application
== WACOM_HID_G11_PEN
)) {
352 wacom
->wacom_wac
.mode_report
= field
->report
->id
;
353 wacom
->wacom_wac
.mode_value
= 0;
357 case WACOM_HID_WD_DATAMODE
:
358 wacom
->wacom_wac
.mode_report
= field
->report
->id
;
359 wacom
->wacom_wac
.mode_value
= 2;
362 case WACOM_HID_UP_G9
:
363 case WACOM_HID_UP_G11
:
364 if (field
->report
->id
== 0x03 &&
365 (field
->application
== WACOM_HID_G9_TOUCHSCREEN
||
366 field
->application
== WACOM_HID_G11_TOUCHSCREEN
)) {
367 wacom
->wacom_wac
.mode_report
= field
->report
->id
;
368 wacom
->wacom_wac
.mode_value
= 0;
371 case WACOM_HID_WD_OFFSETLEFT
:
372 case WACOM_HID_WD_OFFSETTOP
:
373 case WACOM_HID_WD_OFFSETRIGHT
:
374 case WACOM_HID_WD_OFFSETBOTTOM
:
376 n
= hid_report_len(field
->report
);
377 data
= hid_alloc_report_buf(field
->report
, GFP_KERNEL
);
380 data
[0] = field
->report
->id
;
381 ret
= wacom_get_report(hdev
, HID_FEATURE_REPORT
,
382 data
, n
, WAC_CMD_RETRIES
);
384 ret
= hid_report_raw_event(hdev
, HID_FEATURE_REPORT
,
387 hid_warn(hdev
, "%s: could not retrieve sensor offsets\n",
396 * Interface Descriptor of wacom devices can be incomplete and
397 * inconsistent so wacom_features table is used to store stylus
398 * device's packet lengths, various maximum values, and tablet
399 * resolution based on product ID's.
401 * For devices that contain 2 interfaces, wacom_features table is
402 * inaccurate for the touch interface. Since the Interface Descriptor
403 * for touch interfaces has pretty complete data, this function exists
404 * to query tablet for this missing information instead of hard coding in
405 * an additional table.
407 * A typical Interface Descriptor for a stylus will contain a
408 * boot mouse application collection that is not of interest and this
409 * function will ignore it.
411 * It also contains a digitizer application collection that also is not
412 * of interest since any information it contains would be duplicate
413 * of what is in wacom_features. Usually it defines a report of an array
414 * of bytes that could be used as max length of the stylus packet returned.
415 * If it happens to define a Digitizer-Stylus Physical Collection then
416 * the X and Y logical values contain valid data but it is ignored.
418 * A typical Interface Descriptor for a touch interface will contain a
419 * Digitizer-Finger Physical Collection which will define both logical
420 * X/Y maximum as well as the physical size of tablet. Since touch
421 * interfaces haven't supported pressure or distance, this is enough
422 * information to override invalid values in the wacom_features table.
424 * Intuos5 touch interface and 3rd gen Bamboo Touch do not contain useful
425 * data. We deal with them after returning from this function.
427 static void wacom_usage_mapping(struct hid_device
*hdev
,
428 struct hid_field
*field
, struct hid_usage
*usage
)
430 struct wacom
*wacom
= hid_get_drvdata(hdev
);
431 struct wacom_features
*features
= &wacom
->wacom_wac
.features
;
432 bool finger
= WACOM_FINGER_FIELD(field
);
433 bool pen
= WACOM_PEN_FIELD(field
);
434 unsigned equivalent_usage
= wacom_equivalent_usage(usage
->hid
);
437 * Requiring Stylus Usage will ignore boot mouse
438 * X/Y values and some cases of invalid Digitizer X/Y
439 * values commonly reported.
442 features
->device_type
|= WACOM_DEVICETYPE_PEN
;
444 features
->device_type
|= WACOM_DEVICETYPE_TOUCH
;
448 wacom_hid_usage_quirk(hdev
, field
, usage
);
450 switch (equivalent_usage
) {
452 features
->x_max
= field
->logical_maximum
;
454 features
->x_phy
= field
->physical_maximum
;
455 if ((features
->type
!= BAMBOO_PT
) &&
456 (features
->type
!= BAMBOO_TOUCH
)) {
457 features
->unit
= field
->unit
;
458 features
->unitExpo
= field
->unit_exponent
;
463 features
->y_max
= field
->logical_maximum
;
465 features
->y_phy
= field
->physical_maximum
;
466 if ((features
->type
!= BAMBOO_PT
) &&
467 (features
->type
!= BAMBOO_TOUCH
)) {
468 features
->unit
= field
->unit
;
469 features
->unitExpo
= field
->unit_exponent
;
473 case HID_DG_TIPPRESSURE
:
475 features
->pressure_max
= field
->logical_maximum
;
479 if (features
->type
== HID_GENERIC
)
480 wacom_wac_usage_mapping(hdev
, field
, usage
);
483 static void wacom_post_parse_hid(struct hid_device
*hdev
,
484 struct wacom_features
*features
)
486 struct wacom
*wacom
= hid_get_drvdata(hdev
);
487 struct wacom_wac
*wacom_wac
= &wacom
->wacom_wac
;
489 if (features
->type
== HID_GENERIC
) {
490 /* Any last-minute generic device setup */
491 if (wacom_wac
->has_mode_change
) {
492 if (wacom_wac
->is_direct_mode
)
493 features
->device_type
|= WACOM_DEVICETYPE_DIRECT
;
495 features
->device_type
&= ~WACOM_DEVICETYPE_DIRECT
;
498 if (features
->touch_max
> 1) {
499 if (features
->device_type
& WACOM_DEVICETYPE_DIRECT
)
500 input_mt_init_slots(wacom_wac
->touch_input
,
501 wacom_wac
->features
.touch_max
,
504 input_mt_init_slots(wacom_wac
->touch_input
,
505 wacom_wac
->features
.touch_max
,
511 static void wacom_parse_hid(struct hid_device
*hdev
,
512 struct wacom_features
*features
)
514 struct hid_report_enum
*rep_enum
;
515 struct hid_report
*hreport
;
518 /* check features first */
519 rep_enum
= &hdev
->report_enum
[HID_FEATURE_REPORT
];
520 list_for_each_entry(hreport
, &rep_enum
->report_list
, list
) {
521 for (i
= 0; i
< hreport
->maxfield
; i
++) {
522 /* Ignore if report count is out of bounds. */
523 if (hreport
->field
[i
]->report_count
< 1)
526 for (j
= 0; j
< hreport
->field
[i
]->maxusage
; j
++) {
527 wacom_feature_mapping(hdev
, hreport
->field
[i
],
528 hreport
->field
[i
]->usage
+ j
);
533 /* now check the input usages */
534 rep_enum
= &hdev
->report_enum
[HID_INPUT_REPORT
];
535 list_for_each_entry(hreport
, &rep_enum
->report_list
, list
) {
537 if (!hreport
->maxfield
)
540 for (i
= 0; i
< hreport
->maxfield
; i
++)
541 for (j
= 0; j
< hreport
->field
[i
]->maxusage
; j
++)
542 wacom_usage_mapping(hdev
, hreport
->field
[i
],
543 hreport
->field
[i
]->usage
+ j
);
546 wacom_post_parse_hid(hdev
, features
);
549 static int wacom_hid_set_device_mode(struct hid_device
*hdev
)
551 struct wacom
*wacom
= hid_get_drvdata(hdev
);
552 struct hid_data
*hid_data
= &wacom
->wacom_wac
.hid_data
;
553 struct hid_report
*r
;
554 struct hid_report_enum
*re
;
556 if (hid_data
->inputmode
< 0)
559 re
= &(hdev
->report_enum
[HID_FEATURE_REPORT
]);
560 r
= re
->report_id_hash
[hid_data
->inputmode
];
562 r
->field
[0]->value
[hid_data
->inputmode_index
] = 2;
563 hid_hw_request(hdev
, r
, HID_REQ_SET_REPORT
);
568 static int wacom_set_device_mode(struct hid_device
*hdev
,
569 struct wacom_wac
*wacom_wac
)
572 struct hid_report
*r
;
573 struct hid_report_enum
*re
;
575 int error
= -ENOMEM
, limit
= 0;
577 if (wacom_wac
->mode_report
< 0)
580 re
= &(hdev
->report_enum
[HID_FEATURE_REPORT
]);
581 r
= re
->report_id_hash
[wacom_wac
->mode_report
];
585 rep_data
= hid_alloc_report_buf(r
, GFP_KERNEL
);
589 length
= hid_report_len(r
);
592 rep_data
[0] = wacom_wac
->mode_report
;
593 rep_data
[1] = wacom_wac
->mode_value
;
595 error
= wacom_set_report(hdev
, HID_FEATURE_REPORT
, rep_data
,
598 error
= wacom_get_report(hdev
, HID_FEATURE_REPORT
,
599 rep_data
, length
, 1);
600 } while (error
>= 0 &&
601 rep_data
[1] != wacom_wac
->mode_report
&&
602 limit
++ < WAC_MSG_RETRIES
);
606 return error
< 0 ? error
: 0;
609 static int wacom_bt_query_tablet_data(struct hid_device
*hdev
, u8 speed
,
610 struct wacom_features
*features
)
612 struct wacom
*wacom
= hid_get_drvdata(hdev
);
616 switch (features
->type
) {
620 ret
= wacom_set_report(hdev
, HID_FEATURE_REPORT
, rep_data
, 2,
624 rep_data
[0] = speed
== 0 ? 0x05 : 0x06;
627 ret
= wacom_set_report(hdev
, HID_FEATURE_REPORT
,
631 wacom
->wacom_wac
.bt_high_speed
= speed
;
637 * Note that if the raw queries fail, it's not a hard failure
638 * and it is safe to continue
640 hid_warn(hdev
, "failed to poke device, command %d, err %d\n",
645 wacom
->wacom_wac
.bt_features
&= ~0x20;
647 wacom
->wacom_wac
.bt_features
|= 0x20;
650 rep_data
[1] = wacom
->wacom_wac
.bt_features
;
652 ret
= wacom_set_report(hdev
, HID_FEATURE_REPORT
, rep_data
, 2,
655 wacom
->wacom_wac
.bt_high_speed
= speed
;
663 * Switch the tablet into its most-capable mode. Wacom tablets are
664 * typically configured to power-up in a mode which sends mouse-like
665 * reports to the OS. To get absolute position, pressure data, etc.
666 * from the tablet, it is necessary to switch the tablet out of this
667 * mode and into one which sends the full range of tablet data.
669 static int _wacom_query_tablet_data(struct wacom
*wacom
)
671 struct hid_device
*hdev
= wacom
->hdev
;
672 struct wacom_wac
*wacom_wac
= &wacom
->wacom_wac
;
673 struct wacom_features
*features
= &wacom_wac
->features
;
675 if (hdev
->bus
== BUS_BLUETOOTH
)
676 return wacom_bt_query_tablet_data(hdev
, 1, features
);
678 if (features
->type
!= HID_GENERIC
) {
679 if (features
->device_type
& WACOM_DEVICETYPE_TOUCH
) {
680 if (features
->type
> TABLETPC
) {
681 /* MT Tablet PC touch */
682 wacom_wac
->mode_report
= 3;
683 wacom_wac
->mode_value
= 4;
684 } else if (features
->type
== WACOM_24HDT
) {
685 wacom_wac
->mode_report
= 18;
686 wacom_wac
->mode_value
= 2;
687 } else if (features
->type
== WACOM_27QHDT
) {
688 wacom_wac
->mode_report
= 131;
689 wacom_wac
->mode_value
= 2;
690 } else if (features
->type
== BAMBOO_PAD
) {
691 wacom_wac
->mode_report
= 2;
692 wacom_wac
->mode_value
= 2;
694 } else if (features
->device_type
& WACOM_DEVICETYPE_PEN
) {
695 if (features
->type
<= BAMBOO_PT
) {
696 wacom_wac
->mode_report
= 2;
697 wacom_wac
->mode_value
= 2;
702 wacom_set_device_mode(hdev
, wacom_wac
);
704 if (features
->type
== HID_GENERIC
)
705 return wacom_hid_set_device_mode(hdev
);
710 static void wacom_retrieve_hid_descriptor(struct hid_device
*hdev
,
711 struct wacom_features
*features
)
713 struct wacom
*wacom
= hid_get_drvdata(hdev
);
714 struct usb_interface
*intf
= wacom
->intf
;
716 /* default features */
717 features
->x_fuzz
= 4;
718 features
->y_fuzz
= 4;
719 features
->pressure_fuzz
= 0;
720 features
->distance_fuzz
= 1;
721 features
->tilt_fuzz
= 1;
724 * The wireless device HID is basic and layout conflicts with
725 * other tablets (monitor and touch interface can look like pen).
726 * Skip the query for this type and modify defaults based on
729 if (features
->type
== WIRELESS
) {
730 if (intf
->cur_altsetting
->desc
.bInterfaceNumber
== 0)
731 features
->device_type
= WACOM_DEVICETYPE_WL_MONITOR
;
733 features
->device_type
= WACOM_DEVICETYPE_NONE
;
737 wacom_parse_hid(hdev
, features
);
740 struct wacom_hdev_data
{
741 struct list_head list
;
743 struct hid_device
*dev
;
744 struct wacom_shared shared
;
747 static LIST_HEAD(wacom_udev_list
);
748 static DEFINE_MUTEX(wacom_udev_list_lock
);
750 static bool wacom_are_sibling(struct hid_device
*hdev
,
751 struct hid_device
*sibling
)
753 struct wacom
*wacom
= hid_get_drvdata(hdev
);
754 struct wacom_features
*features
= &wacom
->wacom_wac
.features
;
755 struct wacom
*sibling_wacom
= hid_get_drvdata(sibling
);
756 struct wacom_features
*sibling_features
= &sibling_wacom
->wacom_wac
.features
;
757 __u32 oVid
= features
->oVid
? features
->oVid
: hdev
->vendor
;
758 __u32 oPid
= features
->oPid
? features
->oPid
: hdev
->product
;
760 /* The defined oVid/oPid must match that of the sibling */
761 if (features
->oVid
!= HID_ANY_ID
&& sibling
->vendor
!= oVid
)
763 if (features
->oPid
!= HID_ANY_ID
&& sibling
->product
!= oPid
)
767 * Devices with the same VID/PID must share the same physical
768 * device path, while those with different VID/PID must share
769 * the same physical parent device path.
771 if (hdev
->vendor
== sibling
->vendor
&& hdev
->product
== sibling
->product
) {
772 if (!hid_compare_device_paths(hdev
, sibling
, '/'))
775 if (!hid_compare_device_paths(hdev
, sibling
, '.'))
779 /* Skip the remaining heuristics unless you are a HID_GENERIC device */
780 if (features
->type
!= HID_GENERIC
)
784 * Direct-input devices may not be siblings of indirect-input
787 if ((features
->device_type
& WACOM_DEVICETYPE_DIRECT
) &&
788 !(sibling_features
->device_type
& WACOM_DEVICETYPE_DIRECT
))
792 * Indirect-input devices may not be siblings of direct-input
795 if (!(features
->device_type
& WACOM_DEVICETYPE_DIRECT
) &&
796 (sibling_features
->device_type
& WACOM_DEVICETYPE_DIRECT
))
799 /* Pen devices may only be siblings of touch devices */
800 if ((features
->device_type
& WACOM_DEVICETYPE_PEN
) &&
801 !(sibling_features
->device_type
& WACOM_DEVICETYPE_TOUCH
))
804 /* Touch devices may only be siblings of pen devices */
805 if ((features
->device_type
& WACOM_DEVICETYPE_TOUCH
) &&
806 !(sibling_features
->device_type
& WACOM_DEVICETYPE_PEN
))
810 * No reason could be found for these two devices to NOT be
811 * siblings, so there's a good chance they ARE siblings
816 static struct wacom_hdev_data
*wacom_get_hdev_data(struct hid_device
*hdev
)
818 struct wacom_hdev_data
*data
;
820 /* Try to find an already-probed interface from the same device */
821 list_for_each_entry(data
, &wacom_udev_list
, list
) {
822 if (hid_compare_device_paths(hdev
, data
->dev
, '/')) {
823 kref_get(&data
->kref
);
828 /* Fallback to finding devices that appear to be "siblings" */
829 list_for_each_entry(data
, &wacom_udev_list
, list
) {
830 if (wacom_are_sibling(hdev
, data
->dev
)) {
831 kref_get(&data
->kref
);
839 static void wacom_release_shared_data(struct kref
*kref
)
841 struct wacom_hdev_data
*data
=
842 container_of(kref
, struct wacom_hdev_data
, kref
);
844 mutex_lock(&wacom_udev_list_lock
);
845 list_del(&data
->list
);
846 mutex_unlock(&wacom_udev_list_lock
);
851 static void wacom_remove_shared_data(void *res
)
853 struct wacom
*wacom
= res
;
854 struct wacom_hdev_data
*data
;
855 struct wacom_wac
*wacom_wac
= &wacom
->wacom_wac
;
857 if (wacom_wac
->shared
) {
858 data
= container_of(wacom_wac
->shared
, struct wacom_hdev_data
,
861 if (wacom_wac
->shared
->touch
== wacom
->hdev
)
862 wacom_wac
->shared
->touch
= NULL
;
863 else if (wacom_wac
->shared
->pen
== wacom
->hdev
)
864 wacom_wac
->shared
->pen
= NULL
;
866 kref_put(&data
->kref
, wacom_release_shared_data
);
867 wacom_wac
->shared
= NULL
;
871 static int wacom_add_shared_data(struct hid_device
*hdev
)
873 struct wacom
*wacom
= hid_get_drvdata(hdev
);
874 struct wacom_wac
*wacom_wac
= &wacom
->wacom_wac
;
875 struct wacom_hdev_data
*data
;
878 mutex_lock(&wacom_udev_list_lock
);
880 data
= wacom_get_hdev_data(hdev
);
882 data
= kzalloc(sizeof(struct wacom_hdev_data
), GFP_KERNEL
);
888 kref_init(&data
->kref
);
890 list_add_tail(&data
->list
, &wacom_udev_list
);
893 wacom_wac
->shared
= &data
->shared
;
895 retval
= devm_add_action(&hdev
->dev
, wacom_remove_shared_data
, wacom
);
897 mutex_unlock(&wacom_udev_list_lock
);
898 wacom_remove_shared_data(wacom
);
902 if (wacom_wac
->features
.device_type
& WACOM_DEVICETYPE_TOUCH
)
903 wacom_wac
->shared
->touch
= hdev
;
904 else if (wacom_wac
->features
.device_type
& WACOM_DEVICETYPE_PEN
)
905 wacom_wac
->shared
->pen
= hdev
;
908 mutex_unlock(&wacom_udev_list_lock
);
912 static int wacom_led_control(struct wacom
*wacom
)
916 unsigned char report_id
= WAC_CMD_LED_CONTROL
;
919 if (!wacom
->led
.groups
)
922 if (wacom
->wacom_wac
.features
.type
== REMOTE
)
925 if (wacom
->wacom_wac
.pid
) { /* wireless connected */
926 report_id
= WAC_CMD_WL_LED_CONTROL
;
929 else if (wacom
->wacom_wac
.features
.type
== INTUOSP2_BT
) {
930 report_id
= WAC_CMD_WL_INTUOSP2
;
933 buf
= kzalloc(buf_size
, GFP_KERNEL
);
937 if (wacom
->wacom_wac
.features
.type
== HID_GENERIC
) {
938 buf
[0] = WAC_CMD_LED_CONTROL_GENERIC
;
939 buf
[1] = wacom
->led
.llv
;
940 buf
[2] = wacom
->led
.groups
[0].select
& 0x03;
942 } else if ((wacom
->wacom_wac
.features
.type
>= INTUOS5S
&&
943 wacom
->wacom_wac
.features
.type
<= INTUOSPL
)) {
945 * Touch Ring and crop mark LED luminance may take on
946 * one of four values:
947 * 0 = Low; 1 = Medium; 2 = High; 3 = Off
949 int ring_led
= wacom
->led
.groups
[0].select
& 0x03;
950 int ring_lum
= (((wacom
->led
.llv
& 0x60) >> 5) - 1) & 0x03;
952 unsigned char led_bits
= (crop_lum
<< 4) | (ring_lum
<< 2) | (ring_led
);
955 if (wacom
->wacom_wac
.pid
) {
956 wacom_get_report(wacom
->hdev
, HID_FEATURE_REPORT
,
957 buf
, buf_size
, WAC_CMD_RETRIES
);
963 else if (wacom
->wacom_wac
.features
.type
== INTUOSP2_BT
) {
965 buf
[4] = 100; // Power Connection LED (ORANGE)
966 buf
[5] = 100; // BT Connection LED (BLUE)
967 buf
[6] = 100; // Paper Mode (RED?)
968 buf
[7] = 100; // Paper Mode (GREEN?)
969 buf
[8] = 100; // Paper Mode (BLUE?)
970 buf
[9] = wacom
->led
.llv
;
971 buf
[10] = wacom
->led
.groups
[0].select
& 0x03;
974 int led
= wacom
->led
.groups
[0].select
| 0x4;
976 if (wacom
->wacom_wac
.features
.type
== WACOM_21UX2
||
977 wacom
->wacom_wac
.features
.type
== WACOM_24HD
)
978 led
|= (wacom
->led
.groups
[1].select
<< 4) | 0x40;
982 buf
[2] = wacom
->led
.llv
;
983 buf
[3] = wacom
->led
.hlv
;
984 buf
[4] = wacom
->led
.img_lum
;
987 retval
= wacom_set_report(wacom
->hdev
, HID_FEATURE_REPORT
, buf
, buf_size
,
994 static int wacom_led_putimage(struct wacom
*wacom
, int button_id
, u8 xfer_id
,
995 const unsigned len
, const void *img
)
999 const unsigned chunk_len
= len
/ 4; /* 4 chunks are needed to be sent */
1001 buf
= kzalloc(chunk_len
+ 3 , GFP_KERNEL
);
1005 /* Send 'start' command */
1006 buf
[0] = WAC_CMD_ICON_START
;
1008 retval
= wacom_set_report(wacom
->hdev
, HID_FEATURE_REPORT
, buf
, 2,
1014 buf
[1] = button_id
& 0x07;
1015 for (i
= 0; i
< 4; i
++) {
1017 memcpy(buf
+ 3, img
+ i
* chunk_len
, chunk_len
);
1019 retval
= wacom_set_report(wacom
->hdev
, HID_FEATURE_REPORT
,
1020 buf
, chunk_len
+ 3, WAC_CMD_RETRIES
);
1026 buf
[0] = WAC_CMD_ICON_START
;
1028 wacom_set_report(wacom
->hdev
, HID_FEATURE_REPORT
, buf
, 2,
1036 static ssize_t
wacom_led_select_store(struct device
*dev
, int set_id
,
1037 const char *buf
, size_t count
)
1039 struct hid_device
*hdev
= to_hid_device(dev
);
1040 struct wacom
*wacom
= hid_get_drvdata(hdev
);
1044 err
= kstrtouint(buf
, 10, &id
);
1048 mutex_lock(&wacom
->lock
);
1050 wacom
->led
.groups
[set_id
].select
= id
& 0x3;
1051 err
= wacom_led_control(wacom
);
1053 mutex_unlock(&wacom
->lock
);
1055 return err
< 0 ? err
: count
;
1058 #define DEVICE_LED_SELECT_ATTR(SET_ID) \
1059 static ssize_t wacom_led##SET_ID##_select_store(struct device *dev, \
1060 struct device_attribute *attr, const char *buf, size_t count) \
1062 return wacom_led_select_store(dev, SET_ID, buf, count); \
1064 static ssize_t wacom_led##SET_ID##_select_show(struct device *dev, \
1065 struct device_attribute *attr, char *buf) \
1067 struct hid_device *hdev = to_hid_device(dev);\
1068 struct wacom *wacom = hid_get_drvdata(hdev); \
1069 return scnprintf(buf, PAGE_SIZE, "%d\n", \
1070 wacom->led.groups[SET_ID].select); \
1072 static DEVICE_ATTR(status_led##SET_ID##_select, DEV_ATTR_RW_PERM, \
1073 wacom_led##SET_ID##_select_show, \
1074 wacom_led##SET_ID##_select_store)
1076 DEVICE_LED_SELECT_ATTR(0);
1077 DEVICE_LED_SELECT_ATTR(1);
1079 static ssize_t
wacom_luminance_store(struct wacom
*wacom
, u8
*dest
,
1080 const char *buf
, size_t count
)
1085 err
= kstrtouint(buf
, 10, &value
);
1089 mutex_lock(&wacom
->lock
);
1091 *dest
= value
& 0x7f;
1092 err
= wacom_led_control(wacom
);
1094 mutex_unlock(&wacom
->lock
);
1096 return err
< 0 ? err
: count
;
1099 #define DEVICE_LUMINANCE_ATTR(name, field) \
1100 static ssize_t wacom_##name##_luminance_store(struct device *dev, \
1101 struct device_attribute *attr, const char *buf, size_t count) \
1103 struct hid_device *hdev = to_hid_device(dev);\
1104 struct wacom *wacom = hid_get_drvdata(hdev); \
1106 return wacom_luminance_store(wacom, &wacom->led.field, \
1109 static ssize_t wacom_##name##_luminance_show(struct device *dev, \
1110 struct device_attribute *attr, char *buf) \
1112 struct wacom *wacom = dev_get_drvdata(dev); \
1113 return scnprintf(buf, PAGE_SIZE, "%d\n", wacom->led.field); \
1115 static DEVICE_ATTR(name##_luminance, DEV_ATTR_RW_PERM, \
1116 wacom_##name##_luminance_show, \
1117 wacom_##name##_luminance_store)
1119 DEVICE_LUMINANCE_ATTR(status0
, llv
);
1120 DEVICE_LUMINANCE_ATTR(status1
, hlv
);
1121 DEVICE_LUMINANCE_ATTR(buttons
, img_lum
);
1123 static ssize_t
wacom_button_image_store(struct device
*dev
, int button_id
,
1124 const char *buf
, size_t count
)
1126 struct hid_device
*hdev
= to_hid_device(dev
);
1127 struct wacom
*wacom
= hid_get_drvdata(hdev
);
1132 if (hdev
->bus
== BUS_BLUETOOTH
) {
1134 xfer_id
= WAC_CMD_ICON_BT_XFER
;
1137 xfer_id
= WAC_CMD_ICON_XFER
;
1143 mutex_lock(&wacom
->lock
);
1145 err
= wacom_led_putimage(wacom
, button_id
, xfer_id
, len
, buf
);
1147 mutex_unlock(&wacom
->lock
);
1149 return err
< 0 ? err
: count
;
1152 #define DEVICE_BTNIMG_ATTR(BUTTON_ID) \
1153 static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev, \
1154 struct device_attribute *attr, const char *buf, size_t count) \
1156 return wacom_button_image_store(dev, BUTTON_ID, buf, count); \
1158 static DEVICE_ATTR(button##BUTTON_ID##_rawimg, DEV_ATTR_WO_PERM, \
1159 NULL, wacom_btnimg##BUTTON_ID##_store)
1161 DEVICE_BTNIMG_ATTR(0);
1162 DEVICE_BTNIMG_ATTR(1);
1163 DEVICE_BTNIMG_ATTR(2);
1164 DEVICE_BTNIMG_ATTR(3);
1165 DEVICE_BTNIMG_ATTR(4);
1166 DEVICE_BTNIMG_ATTR(5);
1167 DEVICE_BTNIMG_ATTR(6);
1168 DEVICE_BTNIMG_ATTR(7);
1170 static struct attribute
*cintiq_led_attrs
[] = {
1171 &dev_attr_status_led0_select
.attr
,
1172 &dev_attr_status_led1_select
.attr
,
1176 static const struct attribute_group cintiq_led_attr_group
= {
1177 .name
= "wacom_led",
1178 .attrs
= cintiq_led_attrs
,
1181 static struct attribute
*intuos4_led_attrs
[] = {
1182 &dev_attr_status0_luminance
.attr
,
1183 &dev_attr_status1_luminance
.attr
,
1184 &dev_attr_status_led0_select
.attr
,
1185 &dev_attr_buttons_luminance
.attr
,
1186 &dev_attr_button0_rawimg
.attr
,
1187 &dev_attr_button1_rawimg
.attr
,
1188 &dev_attr_button2_rawimg
.attr
,
1189 &dev_attr_button3_rawimg
.attr
,
1190 &dev_attr_button4_rawimg
.attr
,
1191 &dev_attr_button5_rawimg
.attr
,
1192 &dev_attr_button6_rawimg
.attr
,
1193 &dev_attr_button7_rawimg
.attr
,
1197 static const struct attribute_group intuos4_led_attr_group
= {
1198 .name
= "wacom_led",
1199 .attrs
= intuos4_led_attrs
,
1202 static struct attribute
*intuos5_led_attrs
[] = {
1203 &dev_attr_status0_luminance
.attr
,
1204 &dev_attr_status_led0_select
.attr
,
1208 static const struct attribute_group intuos5_led_attr_group
= {
1209 .name
= "wacom_led",
1210 .attrs
= intuos5_led_attrs
,
1213 static struct attribute
*generic_led_attrs
[] = {
1214 &dev_attr_status0_luminance
.attr
,
1215 &dev_attr_status_led0_select
.attr
,
1219 static const struct attribute_group generic_led_attr_group
= {
1220 .name
= "wacom_led",
1221 .attrs
= generic_led_attrs
,
1224 struct wacom_sysfs_group_devres
{
1225 const struct attribute_group
*group
;
1226 struct kobject
*root
;
1229 static void wacom_devm_sysfs_group_release(struct device
*dev
, void *res
)
1231 struct wacom_sysfs_group_devres
*devres
= res
;
1232 struct kobject
*kobj
= devres
->root
;
1234 dev_dbg(dev
, "%s: dropping reference to %s\n",
1235 __func__
, devres
->group
->name
);
1236 sysfs_remove_group(kobj
, devres
->group
);
1239 static int __wacom_devm_sysfs_create_group(struct wacom
*wacom
,
1240 struct kobject
*root
,
1241 const struct attribute_group
*group
)
1243 struct wacom_sysfs_group_devres
*devres
;
1246 devres
= devres_alloc(wacom_devm_sysfs_group_release
,
1247 sizeof(struct wacom_sysfs_group_devres
),
1252 devres
->group
= group
;
1253 devres
->root
= root
;
1255 error
= sysfs_create_group(devres
->root
, group
);
1257 devres_free(devres
);
1261 devres_add(&wacom
->hdev
->dev
, devres
);
1266 static int wacom_devm_sysfs_create_group(struct wacom
*wacom
,
1267 const struct attribute_group
*group
)
1269 return __wacom_devm_sysfs_create_group(wacom
, &wacom
->hdev
->dev
.kobj
,
1273 static void wacom_devm_kfifo_release(struct device
*dev
, void *res
)
1275 struct kfifo_rec_ptr_2
*devres
= res
;
1280 static int wacom_devm_kfifo_alloc(struct wacom
*wacom
)
1282 struct wacom_wac
*wacom_wac
= &wacom
->wacom_wac
;
1283 struct kfifo_rec_ptr_2
*pen_fifo
;
1286 pen_fifo
= devres_alloc(wacom_devm_kfifo_release
,
1287 sizeof(struct kfifo_rec_ptr_2
),
1293 error
= kfifo_alloc(pen_fifo
, WACOM_PKGLEN_MAX
, GFP_KERNEL
);
1295 devres_free(pen_fifo
);
1299 devres_add(&wacom
->hdev
->dev
, pen_fifo
);
1300 wacom_wac
->pen_fifo
= pen_fifo
;
1305 enum led_brightness
wacom_leds_brightness_get(struct wacom_led
*led
)
1307 struct wacom
*wacom
= led
->wacom
;
1309 if (wacom
->led
.max_hlv
)
1310 return led
->hlv
* LED_FULL
/ wacom
->led
.max_hlv
;
1312 if (wacom
->led
.max_llv
)
1313 return led
->llv
* LED_FULL
/ wacom
->led
.max_llv
;
1315 /* device doesn't support brightness tuning */
1319 static enum led_brightness
__wacom_led_brightness_get(struct led_classdev
*cdev
)
1321 struct wacom_led
*led
= container_of(cdev
, struct wacom_led
, cdev
);
1322 struct wacom
*wacom
= led
->wacom
;
1324 if (wacom
->led
.groups
[led
->group
].select
!= led
->id
)
1327 return wacom_leds_brightness_get(led
);
1330 static int wacom_led_brightness_set(struct led_classdev
*cdev
,
1331 enum led_brightness brightness
)
1333 struct wacom_led
*led
= container_of(cdev
, struct wacom_led
, cdev
);
1334 struct wacom
*wacom
= led
->wacom
;
1337 mutex_lock(&wacom
->lock
);
1339 if (!wacom
->led
.groups
|| (brightness
== LED_OFF
&&
1340 wacom
->led
.groups
[led
->group
].select
!= led
->id
)) {
1345 led
->llv
= wacom
->led
.llv
= wacom
->led
.max_llv
* brightness
/ LED_FULL
;
1346 led
->hlv
= wacom
->led
.hlv
= wacom
->led
.max_hlv
* brightness
/ LED_FULL
;
1348 wacom
->led
.groups
[led
->group
].select
= led
->id
;
1350 error
= wacom_led_control(wacom
);
1353 mutex_unlock(&wacom
->lock
);
1358 static void wacom_led_readonly_brightness_set(struct led_classdev
*cdev
,
1359 enum led_brightness brightness
)
1363 static int wacom_led_register_one(struct device
*dev
, struct wacom
*wacom
,
1364 struct wacom_led
*led
, unsigned int group
,
1365 unsigned int id
, bool read_only
)
1370 name
= devm_kasprintf(dev
, GFP_KERNEL
,
1379 led
->trigger
.name
= name
;
1380 error
= devm_led_trigger_register(dev
, &led
->trigger
);
1382 hid_err(wacom
->hdev
,
1383 "failed to register LED trigger %s: %d\n",
1384 led
->cdev
.name
, error
);
1392 led
->llv
= wacom
->led
.llv
;
1393 led
->hlv
= wacom
->led
.hlv
;
1394 led
->cdev
.name
= name
;
1395 led
->cdev
.max_brightness
= LED_FULL
;
1396 led
->cdev
.flags
= LED_HW_PLUGGABLE
;
1397 led
->cdev
.brightness_get
= __wacom_led_brightness_get
;
1399 led
->cdev
.brightness_set_blocking
= wacom_led_brightness_set
;
1400 led
->cdev
.default_trigger
= led
->cdev
.name
;
1402 led
->cdev
.brightness_set
= wacom_led_readonly_brightness_set
;
1405 error
= devm_led_classdev_register(dev
, &led
->cdev
);
1407 hid_err(wacom
->hdev
,
1408 "failed to register LED %s: %d\n",
1409 led
->cdev
.name
, error
);
1410 led
->cdev
.name
= NULL
;
1417 static void wacom_led_groups_release_one(void *data
)
1419 struct wacom_group_leds
*group
= data
;
1421 devres_release_group(group
->dev
, group
);
1424 static int wacom_led_groups_alloc_and_register_one(struct device
*dev
,
1425 struct wacom
*wacom
,
1426 int group_id
, int count
,
1429 struct wacom_led
*leds
;
1432 if (group_id
>= wacom
->led
.count
|| count
<= 0)
1435 if (!devres_open_group(dev
, &wacom
->led
.groups
[group_id
], GFP_KERNEL
))
1438 leds
= devm_kcalloc(dev
, count
, sizeof(struct wacom_led
), GFP_KERNEL
);
1444 wacom
->led
.groups
[group_id
].leds
= leds
;
1445 wacom
->led
.groups
[group_id
].count
= count
;
1447 for (i
= 0; i
< count
; i
++) {
1448 error
= wacom_led_register_one(dev
, wacom
, &leds
[i
],
1449 group_id
, i
, read_only
);
1454 wacom
->led
.groups
[group_id
].dev
= dev
;
1456 devres_close_group(dev
, &wacom
->led
.groups
[group_id
]);
1459 * There is a bug (?) in devm_led_classdev_register() in which its
1460 * increments the refcount of the parent. If the parent is an input
1461 * device, that means the ref count never reaches 0 when
1462 * devm_input_device_release() gets called.
1463 * This means that the LEDs are still there after disconnect.
1464 * Manually force the release of the group so that the leds are released
1465 * once we are done using them.
1467 error
= devm_add_action_or_reset(&wacom
->hdev
->dev
,
1468 wacom_led_groups_release_one
,
1469 &wacom
->led
.groups
[group_id
]);
1476 devres_release_group(dev
, &wacom
->led
.groups
[group_id
]);
1480 struct wacom_led
*wacom_led_find(struct wacom
*wacom
, unsigned int group_id
,
1483 struct wacom_group_leds
*group
;
1485 if (group_id
>= wacom
->led
.count
)
1488 group
= &wacom
->led
.groups
[group_id
];
1495 return &group
->leds
[id
];
1499 * wacom_led_next: gives the next available led with a wacom trigger.
1501 * returns the next available struct wacom_led which has its default trigger
1502 * or the current one if none is available.
1504 struct wacom_led
*wacom_led_next(struct wacom
*wacom
, struct wacom_led
*cur
)
1506 struct wacom_led
*next_led
;
1516 next_led
= wacom_led_find(wacom
, group
, ++next
);
1517 if (!next_led
|| next_led
== cur
)
1519 } while (next_led
->cdev
.trigger
!= &next_led
->trigger
);
1524 static void wacom_led_groups_release(void *data
)
1526 struct wacom
*wacom
= data
;
1528 wacom
->led
.groups
= NULL
;
1529 wacom
->led
.count
= 0;
1532 static int wacom_led_groups_allocate(struct wacom
*wacom
, int count
)
1534 struct device
*dev
= &wacom
->hdev
->dev
;
1535 struct wacom_group_leds
*groups
;
1538 groups
= devm_kcalloc(dev
, count
, sizeof(struct wacom_group_leds
),
1543 error
= devm_add_action_or_reset(dev
, wacom_led_groups_release
, wacom
);
1547 wacom
->led
.groups
= groups
;
1548 wacom
->led
.count
= count
;
1553 static int wacom_leds_alloc_and_register(struct wacom
*wacom
, int group_count
,
1554 int led_per_group
, bool read_only
)
1559 if (!wacom
->wacom_wac
.pad_input
)
1562 dev
= &wacom
->wacom_wac
.pad_input
->dev
;
1564 error
= wacom_led_groups_allocate(wacom
, group_count
);
1568 for (i
= 0; i
< group_count
; i
++) {
1569 error
= wacom_led_groups_alloc_and_register_one(dev
, wacom
, i
,
1579 int wacom_initialize_leds(struct wacom
*wacom
)
1583 if (!(wacom
->wacom_wac
.features
.device_type
& WACOM_DEVICETYPE_PAD
))
1586 /* Initialize default values */
1587 switch (wacom
->wacom_wac
.features
.type
) {
1589 if (!wacom
->generic_has_leds
)
1591 wacom
->led
.llv
= 100;
1592 wacom
->led
.max_llv
= 100;
1594 error
= wacom_leds_alloc_and_register(wacom
, 1, 4, false);
1596 hid_err(wacom
->hdev
,
1597 "cannot create leds err: %d\n", error
);
1601 error
= wacom_devm_sysfs_create_group(wacom
,
1602 &generic_led_attr_group
);
1609 wacom
->led
.llv
= 10;
1610 wacom
->led
.hlv
= 20;
1611 wacom
->led
.max_llv
= 127;
1612 wacom
->led
.max_hlv
= 127;
1613 wacom
->led
.img_lum
= 10;
1615 error
= wacom_leds_alloc_and_register(wacom
, 1, 4, false);
1617 hid_err(wacom
->hdev
,
1618 "cannot create leds err: %d\n", error
);
1622 error
= wacom_devm_sysfs_create_group(wacom
,
1623 &intuos4_led_attr_group
);
1630 wacom
->led
.img_lum
= 0;
1632 error
= wacom_leds_alloc_and_register(wacom
, 2, 4, false);
1634 hid_err(wacom
->hdev
,
1635 "cannot create leds err: %d\n", error
);
1639 error
= wacom_devm_sysfs_create_group(wacom
,
1640 &cintiq_led_attr_group
);
1649 wacom
->led
.llv
= 32;
1650 wacom
->led
.max_llv
= 96;
1652 error
= wacom_leds_alloc_and_register(wacom
, 1, 4, false);
1654 hid_err(wacom
->hdev
,
1655 "cannot create leds err: %d\n", error
);
1659 error
= wacom_devm_sysfs_create_group(wacom
,
1660 &intuos5_led_attr_group
);
1664 wacom
->led
.llv
= 50;
1665 wacom
->led
.max_llv
= 100;
1666 error
= wacom_leds_alloc_and_register(wacom
, 1, 4, false);
1668 hid_err(wacom
->hdev
,
1669 "cannot create leds err: %d\n", error
);
1675 wacom
->led
.llv
= 255;
1676 wacom
->led
.max_llv
= 255;
1677 error
= wacom_led_groups_allocate(wacom
, 5);
1679 hid_err(wacom
->hdev
,
1680 "cannot create leds err: %d\n", error
);
1690 hid_err(wacom
->hdev
,
1691 "cannot create sysfs group err: %d\n", error
);
1698 static void wacom_init_work(struct work_struct
*work
)
1700 struct wacom
*wacom
= container_of(work
, struct wacom
, init_work
.work
);
1702 _wacom_query_tablet_data(wacom
);
1703 wacom_led_control(wacom
);
1706 static void wacom_query_tablet_data(struct wacom
*wacom
)
1708 schedule_delayed_work(&wacom
->init_work
, msecs_to_jiffies(1000));
1711 static enum power_supply_property wacom_battery_props
[] = {
1712 POWER_SUPPLY_PROP_MODEL_NAME
,
1713 POWER_SUPPLY_PROP_PRESENT
,
1714 POWER_SUPPLY_PROP_STATUS
,
1715 POWER_SUPPLY_PROP_SCOPE
,
1716 POWER_SUPPLY_PROP_CAPACITY
1719 static int wacom_battery_get_property(struct power_supply
*psy
,
1720 enum power_supply_property psp
,
1721 union power_supply_propval
*val
)
1723 struct wacom_battery
*battery
= power_supply_get_drvdata(psy
);
1727 case POWER_SUPPLY_PROP_MODEL_NAME
:
1728 val
->strval
= battery
->wacom
->wacom_wac
.name
;
1730 case POWER_SUPPLY_PROP_PRESENT
:
1731 val
->intval
= battery
->bat_connected
;
1733 case POWER_SUPPLY_PROP_SCOPE
:
1734 val
->intval
= POWER_SUPPLY_SCOPE_DEVICE
;
1736 case POWER_SUPPLY_PROP_CAPACITY
:
1737 val
->intval
= battery
->battery_capacity
;
1739 case POWER_SUPPLY_PROP_STATUS
:
1740 if (battery
->bat_status
!= WACOM_POWER_SUPPLY_STATUS_AUTO
)
1741 val
->intval
= battery
->bat_status
;
1742 else if (battery
->bat_charging
)
1743 val
->intval
= POWER_SUPPLY_STATUS_CHARGING
;
1744 else if (battery
->battery_capacity
== 100 &&
1745 battery
->ps_connected
)
1746 val
->intval
= POWER_SUPPLY_STATUS_FULL
;
1747 else if (battery
->ps_connected
)
1748 val
->intval
= POWER_SUPPLY_STATUS_NOT_CHARGING
;
1750 val
->intval
= POWER_SUPPLY_STATUS_DISCHARGING
;
1760 static int __wacom_initialize_battery(struct wacom
*wacom
,
1761 struct wacom_battery
*battery
)
1763 static atomic_t battery_no
= ATOMIC_INIT(0);
1764 struct device
*dev
= &wacom
->hdev
->dev
;
1765 struct power_supply_config psy_cfg
= { .drv_data
= battery
, };
1766 struct power_supply
*ps_bat
;
1767 struct power_supply_desc
*bat_desc
= &battery
->bat_desc
;
1771 if (!devres_open_group(dev
, bat_desc
, GFP_KERNEL
))
1774 battery
->wacom
= wacom
;
1776 n
= atomic_inc_return(&battery_no
) - 1;
1778 bat_desc
->properties
= wacom_battery_props
;
1779 bat_desc
->num_properties
= ARRAY_SIZE(wacom_battery_props
);
1780 bat_desc
->get_property
= wacom_battery_get_property
;
1781 sprintf(battery
->bat_name
, "wacom_battery_%ld", n
);
1782 bat_desc
->name
= battery
->bat_name
;
1783 bat_desc
->type
= POWER_SUPPLY_TYPE_USB
;
1784 bat_desc
->use_for_apm
= 0;
1786 ps_bat
= devm_power_supply_register(dev
, bat_desc
, &psy_cfg
);
1787 if (IS_ERR(ps_bat
)) {
1788 error
= PTR_ERR(ps_bat
);
1792 power_supply_powers(ps_bat
, &wacom
->hdev
->dev
);
1794 battery
->battery
= ps_bat
;
1796 devres_close_group(dev
, bat_desc
);
1800 devres_release_group(dev
, bat_desc
);
1804 static int wacom_initialize_battery(struct wacom
*wacom
)
1806 if (wacom
->wacom_wac
.features
.quirks
& WACOM_QUIRK_BATTERY
)
1807 return __wacom_initialize_battery(wacom
, &wacom
->battery
);
1812 static void wacom_destroy_battery(struct wacom
*wacom
)
1814 if (wacom
->battery
.battery
) {
1815 devres_release_group(&wacom
->hdev
->dev
,
1816 &wacom
->battery
.bat_desc
);
1817 wacom
->battery
.battery
= NULL
;
1821 static ssize_t
wacom_show_speed(struct device
*dev
,
1822 struct device_attribute
1825 struct hid_device
*hdev
= to_hid_device(dev
);
1826 struct wacom
*wacom
= hid_get_drvdata(hdev
);
1828 return snprintf(buf
, PAGE_SIZE
, "%i\n", wacom
->wacom_wac
.bt_high_speed
);
1831 static ssize_t
wacom_store_speed(struct device
*dev
,
1832 struct device_attribute
*attr
,
1833 const char *buf
, size_t count
)
1835 struct hid_device
*hdev
= to_hid_device(dev
);
1836 struct wacom
*wacom
= hid_get_drvdata(hdev
);
1839 if (kstrtou8(buf
, 0, &new_speed
))
1842 if (new_speed
!= 0 && new_speed
!= 1)
1845 wacom_bt_query_tablet_data(hdev
, new_speed
, &wacom
->wacom_wac
.features
);
1850 static DEVICE_ATTR(speed
, DEV_ATTR_RW_PERM
,
1851 wacom_show_speed
, wacom_store_speed
);
1854 static ssize_t
wacom_show_remote_mode(struct kobject
*kobj
,
1855 struct kobj_attribute
*kattr
,
1856 char *buf
, int index
)
1858 struct device
*dev
= kobj_to_dev(kobj
->parent
);
1859 struct hid_device
*hdev
= to_hid_device(dev
);
1860 struct wacom
*wacom
= hid_get_drvdata(hdev
);
1863 mode
= wacom
->led
.groups
[index
].select
;
1864 return sprintf(buf
, "%d\n", mode
< 3 ? mode
: -1);
1867 #define DEVICE_EKR_ATTR_GROUP(SET_ID) \
1868 static ssize_t wacom_show_remote##SET_ID##_mode(struct kobject *kobj, \
1869 struct kobj_attribute *kattr, char *buf) \
1871 return wacom_show_remote_mode(kobj, kattr, buf, SET_ID); \
1873 static struct kobj_attribute remote##SET_ID##_mode_attr = { \
1874 .attr = {.name = "remote_mode", \
1875 .mode = DEV_ATTR_RO_PERM}, \
1876 .show = wacom_show_remote##SET_ID##_mode, \
1878 static struct attribute *remote##SET_ID##_serial_attrs[] = { \
1879 &remote##SET_ID##_mode_attr.attr, \
1882 static const struct attribute_group remote##SET_ID##_serial_group = { \
1884 .attrs = remote##SET_ID##_serial_attrs, \
1887 DEVICE_EKR_ATTR_GROUP(0);
1888 DEVICE_EKR_ATTR_GROUP(1);
1889 DEVICE_EKR_ATTR_GROUP(2);
1890 DEVICE_EKR_ATTR_GROUP(3);
1891 DEVICE_EKR_ATTR_GROUP(4);
1893 static int wacom_remote_create_attr_group(struct wacom
*wacom
, __u32 serial
,
1897 struct wacom_remote
*remote
= wacom
->remote
;
1899 remote
->remotes
[index
].group
.name
= devm_kasprintf(&wacom
->hdev
->dev
,
1902 if (!remote
->remotes
[index
].group
.name
)
1905 error
= __wacom_devm_sysfs_create_group(wacom
, remote
->remote_dir
,
1906 &remote
->remotes
[index
].group
);
1908 remote
->remotes
[index
].group
.name
= NULL
;
1909 hid_err(wacom
->hdev
,
1910 "cannot create sysfs group err: %d\n", error
);
1917 static int wacom_cmd_unpair_remote(struct wacom
*wacom
, unsigned char selector
)
1919 const size_t buf_size
= 2;
1923 buf
= kzalloc(buf_size
, GFP_KERNEL
);
1927 buf
[0] = WAC_CMD_DELETE_PAIRING
;
1930 retval
= wacom_set_report(wacom
->hdev
, HID_OUTPUT_REPORT
, buf
,
1931 buf_size
, WAC_CMD_RETRIES
);
1937 static ssize_t
wacom_store_unpair_remote(struct kobject
*kobj
,
1938 struct kobj_attribute
*attr
,
1939 const char *buf
, size_t count
)
1941 unsigned char selector
= 0;
1942 struct device
*dev
= kobj_to_dev(kobj
->parent
);
1943 struct hid_device
*hdev
= to_hid_device(dev
);
1944 struct wacom
*wacom
= hid_get_drvdata(hdev
);
1947 if (!strncmp(buf
, "*\n", 2)) {
1948 selector
= WAC_CMD_UNPAIR_ALL
;
1950 hid_info(wacom
->hdev
, "remote: unrecognized unpair code: %s\n",
1955 mutex_lock(&wacom
->lock
);
1957 err
= wacom_cmd_unpair_remote(wacom
, selector
);
1958 mutex_unlock(&wacom
->lock
);
1960 return err
< 0 ? err
: count
;
1963 static struct kobj_attribute unpair_remote_attr
= {
1964 .attr
= {.name
= "unpair_remote", .mode
= 0200},
1965 .store
= wacom_store_unpair_remote
,
1968 static const struct attribute
*remote_unpair_attrs
[] = {
1969 &unpair_remote_attr
.attr
,
1973 static void wacom_remotes_destroy(void *data
)
1975 struct wacom
*wacom
= data
;
1976 struct wacom_remote
*remote
= wacom
->remote
;
1981 kobject_put(remote
->remote_dir
);
1982 kfifo_free(&remote
->remote_fifo
);
1983 wacom
->remote
= NULL
;
1986 static int wacom_initialize_remotes(struct wacom
*wacom
)
1989 struct wacom_remote
*remote
;
1992 if (wacom
->wacom_wac
.features
.type
!= REMOTE
)
1995 remote
= devm_kzalloc(&wacom
->hdev
->dev
, sizeof(*wacom
->remote
),
2000 wacom
->remote
= remote
;
2002 spin_lock_init(&remote
->remote_lock
);
2004 error
= kfifo_alloc(&remote
->remote_fifo
,
2005 5 * sizeof(struct wacom_remote_data
),
2008 hid_err(wacom
->hdev
, "failed allocating remote_fifo\n");
2012 remote
->remotes
[0].group
= remote0_serial_group
;
2013 remote
->remotes
[1].group
= remote1_serial_group
;
2014 remote
->remotes
[2].group
= remote2_serial_group
;
2015 remote
->remotes
[3].group
= remote3_serial_group
;
2016 remote
->remotes
[4].group
= remote4_serial_group
;
2018 remote
->remote_dir
= kobject_create_and_add("wacom_remote",
2019 &wacom
->hdev
->dev
.kobj
);
2020 if (!remote
->remote_dir
)
2023 error
= sysfs_create_files(remote
->remote_dir
, remote_unpair_attrs
);
2026 hid_err(wacom
->hdev
,
2027 "cannot create sysfs group err: %d\n", error
);
2031 for (i
= 0; i
< WACOM_MAX_REMOTES
; i
++) {
2032 wacom
->led
.groups
[i
].select
= WACOM_STATUS_UNKNOWN
;
2033 remote
->remotes
[i
].serial
= 0;
2036 error
= devm_add_action_or_reset(&wacom
->hdev
->dev
,
2037 wacom_remotes_destroy
, wacom
);
2044 static struct input_dev
*wacom_allocate_input(struct wacom
*wacom
)
2046 struct input_dev
*input_dev
;
2047 struct hid_device
*hdev
= wacom
->hdev
;
2048 struct wacom_wac
*wacom_wac
= &(wacom
->wacom_wac
);
2050 input_dev
= devm_input_allocate_device(&hdev
->dev
);
2054 input_dev
->name
= wacom_wac
->features
.name
;
2055 input_dev
->phys
= hdev
->phys
;
2056 input_dev
->dev
.parent
= &hdev
->dev
;
2057 input_dev
->open
= wacom_open
;
2058 input_dev
->close
= wacom_close
;
2059 input_dev
->uniq
= hdev
->uniq
;
2060 input_dev
->id
.bustype
= hdev
->bus
;
2061 input_dev
->id
.vendor
= hdev
->vendor
;
2062 input_dev
->id
.product
= wacom_wac
->pid
? wacom_wac
->pid
: hdev
->product
;
2063 input_dev
->id
.version
= hdev
->version
;
2064 input_set_drvdata(input_dev
, wacom
);
2069 static int wacom_allocate_inputs(struct wacom
*wacom
)
2071 struct wacom_wac
*wacom_wac
= &(wacom
->wacom_wac
);
2073 wacom_wac
->pen_input
= wacom_allocate_input(wacom
);
2074 wacom_wac
->touch_input
= wacom_allocate_input(wacom
);
2075 wacom_wac
->pad_input
= wacom_allocate_input(wacom
);
2076 if (!wacom_wac
->pen_input
||
2077 !wacom_wac
->touch_input
||
2078 !wacom_wac
->pad_input
)
2081 wacom_wac
->pen_input
->name
= wacom_wac
->pen_name
;
2082 wacom_wac
->touch_input
->name
= wacom_wac
->touch_name
;
2083 wacom_wac
->pad_input
->name
= wacom_wac
->pad_name
;
2088 static int wacom_register_inputs(struct wacom
*wacom
)
2090 struct input_dev
*pen_input_dev
, *touch_input_dev
, *pad_input_dev
;
2091 struct wacom_wac
*wacom_wac
= &(wacom
->wacom_wac
);
2094 pen_input_dev
= wacom_wac
->pen_input
;
2095 touch_input_dev
= wacom_wac
->touch_input
;
2096 pad_input_dev
= wacom_wac
->pad_input
;
2098 if (!pen_input_dev
|| !touch_input_dev
|| !pad_input_dev
)
2101 error
= wacom_setup_pen_input_capabilities(pen_input_dev
, wacom_wac
);
2103 /* no pen in use on this interface */
2104 input_free_device(pen_input_dev
);
2105 wacom_wac
->pen_input
= NULL
;
2106 pen_input_dev
= NULL
;
2108 error
= input_register_device(pen_input_dev
);
2113 error
= wacom_setup_touch_input_capabilities(touch_input_dev
, wacom_wac
);
2115 /* no touch in use on this interface */
2116 input_free_device(touch_input_dev
);
2117 wacom_wac
->touch_input
= NULL
;
2118 touch_input_dev
= NULL
;
2120 error
= input_register_device(touch_input_dev
);
2125 error
= wacom_setup_pad_input_capabilities(pad_input_dev
, wacom_wac
);
2127 /* no pad in use on this interface */
2128 input_free_device(pad_input_dev
);
2129 wacom_wac
->pad_input
= NULL
;
2130 pad_input_dev
= NULL
;
2132 error
= input_register_device(pad_input_dev
);
2140 wacom_wac
->pad_input
= NULL
;
2141 wacom_wac
->touch_input
= NULL
;
2142 wacom_wac
->pen_input
= NULL
;
2147 * Not all devices report physical dimensions from HID.
2148 * Compute the default from hardcoded logical dimension
2149 * and resolution before driver overwrites them.
2151 static void wacom_set_default_phy(struct wacom_features
*features
)
2153 if (features
->x_resolution
) {
2154 features
->x_phy
= (features
->x_max
* 100) /
2155 features
->x_resolution
;
2156 features
->y_phy
= (features
->y_max
* 100) /
2157 features
->y_resolution
;
2161 static void wacom_calculate_res(struct wacom_features
*features
)
2163 /* set unit to "100th of a mm" for devices not reported by HID */
2164 if (!features
->unit
) {
2165 features
->unit
= 0x11;
2166 features
->unitExpo
= -3;
2169 features
->x_resolution
= wacom_calc_hid_res(features
->x_max
,
2172 features
->unitExpo
);
2173 features
->y_resolution
= wacom_calc_hid_res(features
->y_max
,
2176 features
->unitExpo
);
2179 void wacom_battery_work(struct work_struct
*work
)
2181 struct wacom
*wacom
= container_of(work
, struct wacom
, battery_work
);
2183 if ((wacom
->wacom_wac
.features
.quirks
& WACOM_QUIRK_BATTERY
) &&
2184 !wacom
->battery
.battery
) {
2185 wacom_initialize_battery(wacom
);
2187 else if (!(wacom
->wacom_wac
.features
.quirks
& WACOM_QUIRK_BATTERY
) &&
2188 wacom
->battery
.battery
) {
2189 wacom_destroy_battery(wacom
);
2193 static size_t wacom_compute_pktlen(struct hid_device
*hdev
)
2195 struct hid_report_enum
*report_enum
;
2196 struct hid_report
*report
;
2199 report_enum
= hdev
->report_enum
+ HID_INPUT_REPORT
;
2201 list_for_each_entry(report
, &report_enum
->report_list
, list
) {
2202 size_t report_size
= hid_report_len(report
);
2203 if (report_size
> size
)
2210 static void wacom_update_name(struct wacom
*wacom
, const char *suffix
)
2212 struct wacom_wac
*wacom_wac
= &wacom
->wacom_wac
;
2213 struct wacom_features
*features
= &wacom_wac
->features
;
2214 char name
[WACOM_NAME_MAX
- 20]; /* Leave some room for suffixes */
2216 /* Generic devices name unspecified */
2217 if ((features
->type
== HID_GENERIC
) && !strcmp("Wacom HID", features
->name
)) {
2218 char *product_name
= wacom
->hdev
->name
;
2220 if (hid_is_using_ll_driver(wacom
->hdev
, &usb_hid_driver
)) {
2221 struct usb_interface
*intf
= to_usb_interface(wacom
->hdev
->dev
.parent
);
2222 struct usb_device
*dev
= interface_to_usbdev(intf
);
2223 product_name
= dev
->product
;
2226 if (wacom
->hdev
->bus
== BUS_I2C
) {
2227 snprintf(name
, sizeof(name
), "%s %X",
2228 features
->name
, wacom
->hdev
->product
);
2229 } else if (strstr(product_name
, "Wacom") ||
2230 strstr(product_name
, "wacom") ||
2231 strstr(product_name
, "WACOM")) {
2232 strlcpy(name
, product_name
, sizeof(name
));
2234 snprintf(name
, sizeof(name
), "Wacom %s", product_name
);
2237 /* strip out excess whitespaces */
2239 char *gap
= strstr(name
, " ");
2242 /* shift everything including the terminator */
2243 memmove(gap
, gap
+1, strlen(gap
));
2246 /* get rid of trailing whitespace */
2247 if (name
[strlen(name
)-1] == ' ')
2248 name
[strlen(name
)-1] = '\0';
2250 strlcpy(name
, features
->name
, sizeof(name
));
2253 snprintf(wacom_wac
->name
, sizeof(wacom_wac
->name
), "%s%s",
2256 /* Append the device type to the name */
2257 snprintf(wacom_wac
->pen_name
, sizeof(wacom_wac
->pen_name
),
2258 "%s%s Pen", name
, suffix
);
2259 snprintf(wacom_wac
->touch_name
, sizeof(wacom_wac
->touch_name
),
2260 "%s%s Finger", name
, suffix
);
2261 snprintf(wacom_wac
->pad_name
, sizeof(wacom_wac
->pad_name
),
2262 "%s%s Pad", name
, suffix
);
2265 static void wacom_release_resources(struct wacom
*wacom
)
2267 struct hid_device
*hdev
= wacom
->hdev
;
2269 if (!wacom
->resources
)
2272 devres_release_group(&hdev
->dev
, wacom
);
2274 wacom
->resources
= false;
2276 wacom
->wacom_wac
.pen_input
= NULL
;
2277 wacom
->wacom_wac
.touch_input
= NULL
;
2278 wacom
->wacom_wac
.pad_input
= NULL
;
2281 static void wacom_set_shared_values(struct wacom_wac
*wacom_wac
)
2283 if (wacom_wac
->features
.device_type
& WACOM_DEVICETYPE_TOUCH
) {
2284 wacom_wac
->shared
->type
= wacom_wac
->features
.type
;
2285 wacom_wac
->shared
->touch_input
= wacom_wac
->touch_input
;
2288 if (wacom_wac
->has_mute_touch_switch
) {
2289 wacom_wac
->shared
->has_mute_touch_switch
= true;
2290 wacom_wac
->shared
->is_touch_on
= true;
2293 if (wacom_wac
->shared
->has_mute_touch_switch
&&
2294 wacom_wac
->shared
->touch_input
) {
2295 set_bit(EV_SW
, wacom_wac
->shared
->touch_input
->evbit
);
2296 input_set_capability(wacom_wac
->shared
->touch_input
, EV_SW
,
2301 static int wacom_parse_and_register(struct wacom
*wacom
, bool wireless
)
2303 struct wacom_wac
*wacom_wac
= &wacom
->wacom_wac
;
2304 struct wacom_features
*features
= &wacom_wac
->features
;
2305 struct hid_device
*hdev
= wacom
->hdev
;
2307 unsigned int connect_mask
= HID_CONNECT_HIDRAW
;
2309 features
->pktlen
= wacom_compute_pktlen(hdev
);
2310 if (features
->pktlen
> WACOM_PKGLEN_MAX
)
2313 if (!devres_open_group(&hdev
->dev
, wacom
, GFP_KERNEL
))
2316 wacom
->resources
= true;
2318 error
= wacom_allocate_inputs(wacom
);
2323 * Bamboo Pad has a generic hid handling for the Pen, and we switch it
2324 * into debug mode for the touch part.
2325 * We ignore the other interfaces.
2327 if (features
->type
== BAMBOO_PAD
) {
2328 if (features
->pktlen
== WACOM_PKGLEN_PENABLED
) {
2329 features
->type
= HID_GENERIC
;
2330 } else if ((features
->pktlen
!= WACOM_PKGLEN_BPAD_TOUCH
) &&
2331 (features
->pktlen
!= WACOM_PKGLEN_BPAD_TOUCH_USB
)) {
2337 /* set the default size in case we do not get them from hid */
2338 wacom_set_default_phy(features
);
2340 /* Retrieve the physical and logical size for touch devices */
2341 wacom_retrieve_hid_descriptor(hdev
, features
);
2342 wacom_setup_device_quirks(wacom
);
2344 if (features
->device_type
== WACOM_DEVICETYPE_NONE
&&
2345 features
->type
!= WIRELESS
) {
2346 error
= features
->type
== HID_GENERIC
? -ENODEV
: 0;
2348 dev_warn(&hdev
->dev
, "Unknown device_type for '%s'. %s.",
2350 error
? "Ignoring" : "Assuming pen");
2355 features
->device_type
|= WACOM_DEVICETYPE_PEN
;
2358 wacom_calculate_res(features
);
2360 wacom_update_name(wacom
, wireless
? " (WL)" : "");
2362 /* pen only Bamboo neither support touch nor pad */
2363 if ((features
->type
== BAMBOO_PEN
) &&
2364 ((features
->device_type
& WACOM_DEVICETYPE_TOUCH
) ||
2365 (features
->device_type
& WACOM_DEVICETYPE_PAD
))) {
2370 error
= wacom_add_shared_data(hdev
);
2374 if (!(features
->device_type
& WACOM_DEVICETYPE_WL_MONITOR
) &&
2375 (features
->quirks
& WACOM_QUIRK_BATTERY
)) {
2376 error
= wacom_initialize_battery(wacom
);
2381 error
= wacom_register_inputs(wacom
);
2385 if (wacom
->wacom_wac
.features
.device_type
& WACOM_DEVICETYPE_PAD
) {
2386 error
= wacom_initialize_leds(wacom
);
2390 error
= wacom_initialize_remotes(wacom
);
2395 if (features
->type
== HID_GENERIC
)
2396 connect_mask
|= HID_CONNECT_DRIVER
;
2398 /* Regular HID work starts now */
2399 error
= hid_hw_start(hdev
, connect_mask
);
2401 hid_err(hdev
, "hw start failed\n");
2406 /* Note that if query fails it is not a hard failure */
2407 wacom_query_tablet_data(wacom
);
2410 /* touch only Bamboo doesn't support pen */
2411 if ((features
->type
== BAMBOO_TOUCH
) &&
2412 (features
->device_type
& WACOM_DEVICETYPE_PEN
)) {
2413 cancel_delayed_work_sync(&wacom
->init_work
);
2414 _wacom_query_tablet_data(wacom
);
2419 if (features
->device_type
& WACOM_DEVICETYPE_WL_MONITOR
)
2420 error
= hid_hw_open(hdev
);
2422 wacom_set_shared_values(wacom_wac
);
2423 devres_close_group(&hdev
->dev
, wacom
);
2430 wacom_release_resources(wacom
);
2434 static void wacom_wireless_work(struct work_struct
*work
)
2436 struct wacom
*wacom
= container_of(work
, struct wacom
, wireless_work
);
2437 struct usb_device
*usbdev
= wacom
->usbdev
;
2438 struct wacom_wac
*wacom_wac
= &wacom
->wacom_wac
;
2439 struct hid_device
*hdev1
, *hdev2
;
2440 struct wacom
*wacom1
, *wacom2
;
2441 struct wacom_wac
*wacom_wac1
, *wacom_wac2
;
2445 * Regardless if this is a disconnect or a new tablet,
2446 * remove any existing input and battery devices.
2449 wacom_destroy_battery(wacom
);
2451 /* Stylus interface */
2452 hdev1
= usb_get_intfdata(usbdev
->config
->interface
[1]);
2453 wacom1
= hid_get_drvdata(hdev1
);
2454 wacom_wac1
= &(wacom1
->wacom_wac
);
2455 wacom_release_resources(wacom1
);
2457 /* Touch interface */
2458 hdev2
= usb_get_intfdata(usbdev
->config
->interface
[2]);
2459 wacom2
= hid_get_drvdata(hdev2
);
2460 wacom_wac2
= &(wacom2
->wacom_wac
);
2461 wacom_release_resources(wacom2
);
2463 if (wacom_wac
->pid
== 0) {
2464 hid_info(wacom
->hdev
, "wireless tablet disconnected\n");
2466 const struct hid_device_id
*id
= wacom_ids
;
2468 hid_info(wacom
->hdev
, "wireless tablet connected with PID %x\n",
2472 if (id
->vendor
== USB_VENDOR_ID_WACOM
&&
2473 id
->product
== wacom_wac
->pid
)
2479 hid_info(wacom
->hdev
, "ignoring unknown PID.\n");
2483 /* Stylus interface */
2484 wacom_wac1
->features
=
2485 *((struct wacom_features
*)id
->driver_data
);
2487 wacom_wac1
->pid
= wacom_wac
->pid
;
2489 error
= wacom_parse_and_register(wacom1
, true);
2493 /* Touch interface */
2494 if (wacom_wac1
->features
.touch_max
||
2495 (wacom_wac1
->features
.type
>= INTUOSHT
&&
2496 wacom_wac1
->features
.type
<= BAMBOO_PT
)) {
2497 wacom_wac2
->features
=
2498 *((struct wacom_features
*)id
->driver_data
);
2499 wacom_wac2
->pid
= wacom_wac
->pid
;
2501 error
= wacom_parse_and_register(wacom2
, true);
2506 strlcpy(wacom_wac
->name
, wacom_wac1
->name
,
2507 sizeof(wacom_wac
->name
));
2508 error
= wacom_initialize_battery(wacom
);
2516 wacom_release_resources(wacom1
);
2517 wacom_release_resources(wacom2
);
2521 static void wacom_remote_destroy_one(struct wacom
*wacom
, unsigned int index
)
2523 struct wacom_remote
*remote
= wacom
->remote
;
2524 u32 serial
= remote
->remotes
[index
].serial
;
2526 unsigned long flags
;
2528 for (i
= 0; i
< WACOM_MAX_REMOTES
; i
++) {
2529 if (remote
->remotes
[i
].serial
== serial
) {
2531 spin_lock_irqsave(&remote
->remote_lock
, flags
);
2532 remote
->remotes
[i
].registered
= false;
2533 spin_unlock_irqrestore(&remote
->remote_lock
, flags
);
2535 if (remote
->remotes
[i
].battery
.battery
)
2536 devres_release_group(&wacom
->hdev
->dev
,
2537 &remote
->remotes
[i
].battery
.bat_desc
);
2539 if (remote
->remotes
[i
].group
.name
)
2540 devres_release_group(&wacom
->hdev
->dev
,
2541 &remote
->remotes
[i
]);
2543 remote
->remotes
[i
].serial
= 0;
2544 remote
->remotes
[i
].group
.name
= NULL
;
2545 remote
->remotes
[i
].battery
.battery
= NULL
;
2546 wacom
->led
.groups
[i
].select
= WACOM_STATUS_UNKNOWN
;
2551 static int wacom_remote_create_one(struct wacom
*wacom
, u32 serial
,
2554 struct wacom_remote
*remote
= wacom
->remote
;
2555 struct device
*dev
= &wacom
->hdev
->dev
;
2558 /* A remote can pair more than once with an EKR,
2559 * check to make sure this serial isn't already paired.
2561 for (k
= 0; k
< WACOM_MAX_REMOTES
; k
++) {
2562 if (remote
->remotes
[k
].serial
== serial
)
2566 if (k
< WACOM_MAX_REMOTES
) {
2567 remote
->remotes
[index
].serial
= serial
;
2571 if (!devres_open_group(dev
, &remote
->remotes
[index
], GFP_KERNEL
))
2574 error
= wacom_remote_create_attr_group(wacom
, serial
, index
);
2578 remote
->remotes
[index
].input
= wacom_allocate_input(wacom
);
2579 if (!remote
->remotes
[index
].input
) {
2583 remote
->remotes
[index
].input
->uniq
= remote
->remotes
[index
].group
.name
;
2584 remote
->remotes
[index
].input
->name
= wacom
->wacom_wac
.pad_name
;
2586 if (!remote
->remotes
[index
].input
->name
) {
2591 error
= wacom_setup_pad_input_capabilities(remote
->remotes
[index
].input
,
2596 remote
->remotes
[index
].serial
= serial
;
2598 error
= input_register_device(remote
->remotes
[index
].input
);
2602 error
= wacom_led_groups_alloc_and_register_one(
2603 &remote
->remotes
[index
].input
->dev
,
2604 wacom
, index
, 3, true);
2608 remote
->remotes
[index
].registered
= true;
2610 devres_close_group(dev
, &remote
->remotes
[index
]);
2614 devres_release_group(dev
, &remote
->remotes
[index
]);
2615 remote
->remotes
[index
].serial
= 0;
2619 static int wacom_remote_attach_battery(struct wacom
*wacom
, int index
)
2621 struct wacom_remote
*remote
= wacom
->remote
;
2624 if (!remote
->remotes
[index
].registered
)
2627 if (remote
->remotes
[index
].battery
.battery
)
2630 if (wacom
->led
.groups
[index
].select
== WACOM_STATUS_UNKNOWN
)
2633 error
= __wacom_initialize_battery(wacom
,
2634 &wacom
->remote
->remotes
[index
].battery
);
2641 static void wacom_remote_work(struct work_struct
*work
)
2643 struct wacom
*wacom
= container_of(work
, struct wacom
, remote_work
);
2644 struct wacom_remote
*remote
= wacom
->remote
;
2645 struct wacom_remote_data data
;
2646 unsigned long flags
;
2651 spin_lock_irqsave(&remote
->remote_lock
, flags
);
2653 count
= kfifo_out(&remote
->remote_fifo
, &data
, sizeof(data
));
2655 if (count
!= sizeof(data
)) {
2656 hid_err(wacom
->hdev
,
2657 "workitem triggered without status available\n");
2658 spin_unlock_irqrestore(&remote
->remote_lock
, flags
);
2662 if (!kfifo_is_empty(&remote
->remote_fifo
))
2663 wacom_schedule_work(&wacom
->wacom_wac
, WACOM_WORKER_REMOTE
);
2665 spin_unlock_irqrestore(&remote
->remote_lock
, flags
);
2667 for (i
= 0; i
< WACOM_MAX_REMOTES
; i
++) {
2668 serial
= data
.remote
[i
].serial
;
2669 if (data
.remote
[i
].connected
) {
2671 if (remote
->remotes
[i
].serial
== serial
) {
2672 wacom_remote_attach_battery(wacom
, i
);
2676 if (remote
->remotes
[i
].serial
)
2677 wacom_remote_destroy_one(wacom
, i
);
2679 wacom_remote_create_one(wacom
, serial
, i
);
2681 } else if (remote
->remotes
[i
].serial
) {
2682 wacom_remote_destroy_one(wacom
, i
);
2687 static void wacom_mode_change_work(struct work_struct
*work
)
2689 struct wacom
*wacom
= container_of(work
, struct wacom
, mode_change_work
);
2690 struct wacom_shared
*shared
= wacom
->wacom_wac
.shared
;
2691 struct wacom
*wacom1
= NULL
;
2692 struct wacom
*wacom2
= NULL
;
2693 bool is_direct
= wacom
->wacom_wac
.is_direct_mode
;
2697 wacom1
= hid_get_drvdata(shared
->pen
);
2698 wacom_release_resources(wacom1
);
2699 hid_hw_stop(wacom1
->hdev
);
2700 wacom1
->wacom_wac
.has_mode_change
= true;
2701 wacom1
->wacom_wac
.is_direct_mode
= is_direct
;
2704 if (shared
->touch
) {
2705 wacom2
= hid_get_drvdata(shared
->touch
);
2706 wacom_release_resources(wacom2
);
2707 hid_hw_stop(wacom2
->hdev
);
2708 wacom2
->wacom_wac
.has_mode_change
= true;
2709 wacom2
->wacom_wac
.is_direct_mode
= is_direct
;
2713 error
= wacom_parse_and_register(wacom1
, false);
2719 error
= wacom_parse_and_register(wacom2
, false);
2727 static int wacom_probe(struct hid_device
*hdev
,
2728 const struct hid_device_id
*id
)
2730 struct usb_interface
*intf
= to_usb_interface(hdev
->dev
.parent
);
2731 struct usb_device
*dev
= interface_to_usbdev(intf
);
2732 struct wacom
*wacom
;
2733 struct wacom_wac
*wacom_wac
;
2734 struct wacom_features
*features
;
2737 if (!id
->driver_data
)
2740 hdev
->quirks
|= HID_QUIRK_NO_INIT_REPORTS
;
2742 /* hid-core sets this quirk for the boot interface */
2743 hdev
->quirks
&= ~HID_QUIRK_NOGET
;
2745 wacom
= devm_kzalloc(&hdev
->dev
, sizeof(struct wacom
), GFP_KERNEL
);
2749 hid_set_drvdata(hdev
, wacom
);
2752 wacom_wac
= &wacom
->wacom_wac
;
2753 wacom_wac
->features
= *((struct wacom_features
*)id
->driver_data
);
2754 features
= &wacom_wac
->features
;
2756 if (features
->check_for_hid_type
&& features
->hid_type
!= hdev
->type
)
2759 error
= wacom_devm_kfifo_alloc(wacom
);
2763 wacom_wac
->hid_data
.inputmode
= -1;
2764 wacom_wac
->mode_report
= -1;
2766 wacom
->usbdev
= dev
;
2768 mutex_init(&wacom
->lock
);
2769 INIT_DELAYED_WORK(&wacom
->init_work
, wacom_init_work
);
2770 INIT_WORK(&wacom
->wireless_work
, wacom_wireless_work
);
2771 INIT_WORK(&wacom
->battery_work
, wacom_battery_work
);
2772 INIT_WORK(&wacom
->remote_work
, wacom_remote_work
);
2773 INIT_WORK(&wacom
->mode_change_work
, wacom_mode_change_work
);
2775 /* ask for the report descriptor to be loaded by HID */
2776 error
= hid_parse(hdev
);
2778 hid_err(hdev
, "parse failed\n");
2782 error
= wacom_parse_and_register(wacom
, false);
2786 if (hdev
->bus
== BUS_BLUETOOTH
) {
2787 error
= device_create_file(&hdev
->dev
, &dev_attr_speed
);
2790 "can't create sysfs speed attribute err: %d\n",
2797 static void wacom_remove(struct hid_device
*hdev
)
2799 struct wacom
*wacom
= hid_get_drvdata(hdev
);
2800 struct wacom_wac
*wacom_wac
= &wacom
->wacom_wac
;
2801 struct wacom_features
*features
= &wacom_wac
->features
;
2803 if (features
->device_type
& WACOM_DEVICETYPE_WL_MONITOR
)
2808 cancel_delayed_work_sync(&wacom
->init_work
);
2809 cancel_work_sync(&wacom
->wireless_work
);
2810 cancel_work_sync(&wacom
->battery_work
);
2811 cancel_work_sync(&wacom
->remote_work
);
2812 cancel_work_sync(&wacom
->mode_change_work
);
2813 if (hdev
->bus
== BUS_BLUETOOTH
)
2814 device_remove_file(&hdev
->dev
, &dev_attr_speed
);
2816 /* make sure we don't trigger the LEDs */
2817 wacom_led_groups_release(wacom
);
2819 if (wacom
->wacom_wac
.features
.type
!= REMOTE
)
2820 wacom_release_resources(wacom
);
2824 static int wacom_resume(struct hid_device
*hdev
)
2826 struct wacom
*wacom
= hid_get_drvdata(hdev
);
2828 mutex_lock(&wacom
->lock
);
2830 /* switch to wacom mode first */
2831 _wacom_query_tablet_data(wacom
);
2832 wacom_led_control(wacom
);
2834 mutex_unlock(&wacom
->lock
);
2839 static int wacom_reset_resume(struct hid_device
*hdev
)
2841 return wacom_resume(hdev
);
2843 #endif /* CONFIG_PM */
2845 static struct hid_driver wacom_driver
= {
2847 .id_table
= wacom_ids
,
2848 .probe
= wacom_probe
,
2849 .remove
= wacom_remove
,
2850 .report
= wacom_wac_report
,
2852 .resume
= wacom_resume
,
2853 .reset_resume
= wacom_reset_resume
,
2855 .raw_event
= wacom_raw_event
,
2857 module_hid_driver(wacom_driver
);
2859 MODULE_VERSION(DRIVER_VERSION
);
2860 MODULE_AUTHOR(DRIVER_AUTHOR
);
2861 MODULE_DESCRIPTION(DRIVER_DESC
);
2862 MODULE_LICENSE("GPL");