2 * drivers/input/tablet/wacom_sys.c
4 * USB Wacom tablet support - system specific code
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
14 #include "wacom_wac.h"
16 #include <linux/input/mt.h>
18 #define WAC_MSG_RETRIES 5
19 #define WAC_CMD_RETRIES 10
21 #define DEV_ATTR_RW_PERM (S_IRUGO | S_IWUSR | S_IWGRP)
22 #define DEV_ATTR_WO_PERM (S_IWUSR | S_IWGRP)
23 #define DEV_ATTR_RO_PERM (S_IRUSR | S_IRGRP)
25 static int wacom_get_report(struct hid_device
*hdev
, u8 type
, u8
*buf
,
26 size_t size
, unsigned int retries
)
31 retval
= hid_hw_raw_request(hdev
, buf
[0], buf
, size
, type
,
33 } while ((retval
== -ETIMEDOUT
|| retval
== -EAGAIN
) && --retries
);
36 hid_err(hdev
, "wacom_get_report: ran out of retries "
37 "(last error = %d)\n", retval
);
42 static int wacom_set_report(struct hid_device
*hdev
, u8 type
, u8
*buf
,
43 size_t size
, unsigned int retries
)
48 retval
= hid_hw_raw_request(hdev
, buf
[0], buf
, size
, type
,
50 } while ((retval
== -ETIMEDOUT
|| retval
== -EAGAIN
) && --retries
);
53 hid_err(hdev
, "wacom_set_report: ran out of retries "
54 "(last error = %d)\n", retval
);
59 static int wacom_raw_event(struct hid_device
*hdev
, struct hid_report
*report
,
60 u8
*raw_data
, int size
)
62 struct wacom
*wacom
= hid_get_drvdata(hdev
);
64 if (size
> WACOM_PKGLEN_MAX
)
67 memcpy(wacom
->wacom_wac
.data
, raw_data
, size
);
69 wacom_wac_irq(&wacom
->wacom_wac
, size
);
74 static int wacom_open(struct input_dev
*dev
)
76 struct wacom
*wacom
= input_get_drvdata(dev
);
78 return hid_hw_open(wacom
->hdev
);
81 static void wacom_close(struct input_dev
*dev
)
83 struct wacom
*wacom
= input_get_drvdata(dev
);
86 * wacom->hdev should never be null, but surprisingly, I had the case
87 * once while unplugging the Wacom Wireless Receiver.
90 hid_hw_close(wacom
->hdev
);
94 * Calculate the resolution of the X or Y axis using hidinput_calc_abs_res.
96 static int wacom_calc_hid_res(int logical_extents
, int physical_extents
,
97 unsigned unit
, int exponent
)
99 struct hid_field field
= {
100 .logical_maximum
= logical_extents
,
101 .physical_maximum
= physical_extents
,
103 .unit_exponent
= exponent
,
106 return hidinput_calc_abs_res(&field
, ABS_X
);
109 static void wacom_feature_mapping(struct hid_device
*hdev
,
110 struct hid_field
*field
, struct hid_usage
*usage
)
112 struct wacom
*wacom
= hid_get_drvdata(hdev
);
113 struct wacom_features
*features
= &wacom
->wacom_wac
.features
;
114 struct hid_data
*hid_data
= &wacom
->wacom_wac
.hid_data
;
115 unsigned int equivalent_usage
= wacom_equivalent_usage(usage
->hid
);
120 switch (equivalent_usage
) {
121 case HID_DG_CONTACTMAX
:
122 /* leave touch_max as is if predefined */
123 if (!features
->touch_max
) {
125 data
= kzalloc(2, GFP_KERNEL
);
128 data
[0] = field
->report
->id
;
129 ret
= wacom_get_report(hdev
, HID_FEATURE_REPORT
,
130 data
, 2, WAC_CMD_RETRIES
);
132 features
->touch_max
= data
[1];
134 features
->touch_max
= 16;
135 hid_warn(hdev
, "wacom_feature_mapping: "
136 "could not get HID_DG_CONTACTMAX, "
137 "defaulting to %d\n",
138 features
->touch_max
);
143 case HID_DG_INPUTMODE
:
144 /* Ignore if value index is out of bounds. */
145 if (usage
->usage_index
>= field
->report_count
) {
146 dev_err(&hdev
->dev
, "HID_DG_INPUTMODE out of range\n");
150 hid_data
->inputmode
= field
->report
->id
;
151 hid_data
->inputmode_index
= usage
->usage_index
;
154 case HID_UP_DIGITIZER
:
155 if (field
->report
->id
== 0x0B &&
156 (field
->application
== WACOM_HID_G9_PEN
||
157 field
->application
== WACOM_HID_G11_PEN
)) {
158 wacom
->wacom_wac
.mode_report
= field
->report
->id
;
159 wacom
->wacom_wac
.mode_value
= 0;
163 case WACOM_HID_WD_DATAMODE
:
164 wacom
->wacom_wac
.mode_report
= field
->report
->id
;
165 wacom
->wacom_wac
.mode_value
= 2;
168 case WACOM_HID_UP_G9
:
169 case WACOM_HID_UP_G11
:
170 if (field
->report
->id
== 0x03 &&
171 (field
->application
== WACOM_HID_G9_TOUCHSCREEN
||
172 field
->application
== WACOM_HID_G11_TOUCHSCREEN
)) {
173 wacom
->wacom_wac
.mode_report
= field
->report
->id
;
174 wacom
->wacom_wac
.mode_value
= 0;
177 case WACOM_HID_WD_OFFSETLEFT
:
178 case WACOM_HID_WD_OFFSETTOP
:
179 case WACOM_HID_WD_OFFSETRIGHT
:
180 case WACOM_HID_WD_OFFSETBOTTOM
:
182 n
= hid_report_len(field
->report
);
183 data
= hid_alloc_report_buf(field
->report
, GFP_KERNEL
);
186 data
[0] = field
->report
->id
;
187 ret
= wacom_get_report(hdev
, HID_FEATURE_REPORT
,
188 data
, n
, WAC_CMD_RETRIES
);
190 ret
= hid_report_raw_event(hdev
, HID_FEATURE_REPORT
,
193 hid_warn(hdev
, "%s: could not retrieve sensor offsets\n",
200 if (hdev
->vendor
== USB_VENDOR_ID_WACOM
&&
201 hdev
->product
== 0x4200 /* Dell Canvas 27 */ &&
202 field
->application
== HID_UP_MSVENDOR
) {
203 wacom
->wacom_wac
.mode_report
= field
->report
->id
;
204 wacom
->wacom_wac
.mode_value
= 2;
209 * Interface Descriptor of wacom devices can be incomplete and
210 * inconsistent so wacom_features table is used to store stylus
211 * device's packet lengths, various maximum values, and tablet
212 * resolution based on product ID's.
214 * For devices that contain 2 interfaces, wacom_features table is
215 * inaccurate for the touch interface. Since the Interface Descriptor
216 * for touch interfaces has pretty complete data, this function exists
217 * to query tablet for this missing information instead of hard coding in
218 * an additional table.
220 * A typical Interface Descriptor for a stylus will contain a
221 * boot mouse application collection that is not of interest and this
222 * function will ignore it.
224 * It also contains a digitizer application collection that also is not
225 * of interest since any information it contains would be duplicate
226 * of what is in wacom_features. Usually it defines a report of an array
227 * of bytes that could be used as max length of the stylus packet returned.
228 * If it happens to define a Digitizer-Stylus Physical Collection then
229 * the X and Y logical values contain valid data but it is ignored.
231 * A typical Interface Descriptor for a touch interface will contain a
232 * Digitizer-Finger Physical Collection which will define both logical
233 * X/Y maximum as well as the physical size of tablet. Since touch
234 * interfaces haven't supported pressure or distance, this is enough
235 * information to override invalid values in the wacom_features table.
237 * Intuos5 touch interface and 3rd gen Bamboo Touch do not contain useful
238 * data. We deal with them after returning from this function.
240 static void wacom_usage_mapping(struct hid_device
*hdev
,
241 struct hid_field
*field
, struct hid_usage
*usage
)
243 struct wacom
*wacom
= hid_get_drvdata(hdev
);
244 struct wacom_features
*features
= &wacom
->wacom_wac
.features
;
245 bool finger
= WACOM_FINGER_FIELD(field
);
246 bool pen
= WACOM_PEN_FIELD(field
);
249 * Requiring Stylus Usage will ignore boot mouse
250 * X/Y values and some cases of invalid Digitizer X/Y
251 * values commonly reported.
254 features
->device_type
|= WACOM_DEVICETYPE_PEN
;
256 features
->device_type
|= WACOM_DEVICETYPE_TOUCH
;
261 * Bamboo models do not support HID_DG_CONTACTMAX.
262 * And, Bamboo Pen only descriptor contains touch.
264 if (features
->type
> BAMBOO_PT
) {
265 /* ISDv4 touch devices at least supports one touch point */
266 if (finger
&& !features
->touch_max
)
267 features
->touch_max
= 1;
271 * ISDv4 devices which predate HID's adoption of the
272 * HID_DG_BARELSWITCH2 usage use 0x000D0000 in its
273 * position instead. We can accurately detect if a
274 * usage with that value should be HID_DG_BARRELSWITCH2
275 * based on the surrounding usages, which have remained
276 * constant across generations.
278 if (features
->type
== HID_GENERIC
&&
279 usage
->hid
== 0x000D0000 &&
280 field
->application
== HID_DG_PEN
&&
281 field
->physical
== HID_DG_STYLUS
) {
282 int i
= usage
->usage_index
;
284 if (i
-4 >= 0 && i
+1 < field
->maxusage
&&
285 field
->usage
[i
-4].hid
== HID_DG_TIPSWITCH
&&
286 field
->usage
[i
-3].hid
== HID_DG_BARRELSWITCH
&&
287 field
->usage
[i
-2].hid
== HID_DG_ERASER
&&
288 field
->usage
[i
-1].hid
== HID_DG_INVERT
&&
289 field
->usage
[i
+1].hid
== HID_DG_INRANGE
) {
290 usage
->hid
= HID_DG_BARRELSWITCH2
;
294 switch (usage
->hid
) {
296 features
->x_max
= field
->logical_maximum
;
298 features
->x_phy
= field
->physical_maximum
;
299 if ((features
->type
!= BAMBOO_PT
) &&
300 (features
->type
!= BAMBOO_TOUCH
)) {
301 features
->unit
= field
->unit
;
302 features
->unitExpo
= field
->unit_exponent
;
307 features
->y_max
= field
->logical_maximum
;
309 features
->y_phy
= field
->physical_maximum
;
310 if ((features
->type
!= BAMBOO_PT
) &&
311 (features
->type
!= BAMBOO_TOUCH
)) {
312 features
->unit
= field
->unit
;
313 features
->unitExpo
= field
->unit_exponent
;
317 case HID_DG_TIPPRESSURE
:
319 features
->pressure_max
= field
->logical_maximum
;
323 if (features
->type
== HID_GENERIC
)
324 wacom_wac_usage_mapping(hdev
, field
, usage
);
327 static void wacom_post_parse_hid(struct hid_device
*hdev
,
328 struct wacom_features
*features
)
330 struct wacom
*wacom
= hid_get_drvdata(hdev
);
331 struct wacom_wac
*wacom_wac
= &wacom
->wacom_wac
;
333 if (features
->type
== HID_GENERIC
) {
334 /* Any last-minute generic device setup */
335 if (wacom_wac
->has_mode_change
) {
336 if (wacom_wac
->is_direct_mode
)
337 features
->device_type
|= WACOM_DEVICETYPE_DIRECT
;
339 features
->device_type
&= ~WACOM_DEVICETYPE_DIRECT
;
342 if (features
->touch_max
> 1) {
343 if (features
->device_type
& WACOM_DEVICETYPE_DIRECT
)
344 input_mt_init_slots(wacom_wac
->touch_input
,
345 wacom_wac
->features
.touch_max
,
348 input_mt_init_slots(wacom_wac
->touch_input
,
349 wacom_wac
->features
.touch_max
,
355 static void wacom_parse_hid(struct hid_device
*hdev
,
356 struct wacom_features
*features
)
358 struct hid_report_enum
*rep_enum
;
359 struct hid_report
*hreport
;
362 /* check features first */
363 rep_enum
= &hdev
->report_enum
[HID_FEATURE_REPORT
];
364 list_for_each_entry(hreport
, &rep_enum
->report_list
, list
) {
365 for (i
= 0; i
< hreport
->maxfield
; i
++) {
366 /* Ignore if report count is out of bounds. */
367 if (hreport
->field
[i
]->report_count
< 1)
370 for (j
= 0; j
< hreport
->field
[i
]->maxusage
; j
++) {
371 wacom_feature_mapping(hdev
, hreport
->field
[i
],
372 hreport
->field
[i
]->usage
+ j
);
377 /* now check the input usages */
378 rep_enum
= &hdev
->report_enum
[HID_INPUT_REPORT
];
379 list_for_each_entry(hreport
, &rep_enum
->report_list
, list
) {
381 if (!hreport
->maxfield
)
384 for (i
= 0; i
< hreport
->maxfield
; i
++)
385 for (j
= 0; j
< hreport
->field
[i
]->maxusage
; j
++)
386 wacom_usage_mapping(hdev
, hreport
->field
[i
],
387 hreport
->field
[i
]->usage
+ j
);
390 wacom_post_parse_hid(hdev
, features
);
393 static int wacom_hid_set_device_mode(struct hid_device
*hdev
)
395 struct wacom
*wacom
= hid_get_drvdata(hdev
);
396 struct hid_data
*hid_data
= &wacom
->wacom_wac
.hid_data
;
397 struct hid_report
*r
;
398 struct hid_report_enum
*re
;
400 if (hid_data
->inputmode
< 0)
403 re
= &(hdev
->report_enum
[HID_FEATURE_REPORT
]);
404 r
= re
->report_id_hash
[hid_data
->inputmode
];
406 r
->field
[0]->value
[hid_data
->inputmode_index
] = 2;
407 hid_hw_request(hdev
, r
, HID_REQ_SET_REPORT
);
412 static int wacom_set_device_mode(struct hid_device
*hdev
,
413 struct wacom_wac
*wacom_wac
)
416 struct hid_report
*r
;
417 struct hid_report_enum
*re
;
419 int error
= -ENOMEM
, limit
= 0;
421 if (wacom_wac
->mode_report
< 0)
424 re
= &(hdev
->report_enum
[HID_FEATURE_REPORT
]);
425 r
= re
->report_id_hash
[wacom_wac
->mode_report
];
429 rep_data
= hid_alloc_report_buf(r
, GFP_KERNEL
);
433 length
= hid_report_len(r
);
436 rep_data
[0] = wacom_wac
->mode_report
;
437 rep_data
[1] = wacom_wac
->mode_value
;
439 error
= wacom_set_report(hdev
, HID_FEATURE_REPORT
, rep_data
,
442 error
= wacom_get_report(hdev
, HID_FEATURE_REPORT
,
443 rep_data
, length
, 1);
444 } while (error
>= 0 &&
445 rep_data
[1] != wacom_wac
->mode_report
&&
446 limit
++ < WAC_MSG_RETRIES
);
450 return error
< 0 ? error
: 0;
453 static int wacom_bt_query_tablet_data(struct hid_device
*hdev
, u8 speed
,
454 struct wacom_features
*features
)
456 struct wacom
*wacom
= hid_get_drvdata(hdev
);
460 switch (features
->type
) {
464 ret
= wacom_set_report(hdev
, HID_FEATURE_REPORT
, rep_data
, 2,
468 rep_data
[0] = speed
== 0 ? 0x05 : 0x06;
471 ret
= wacom_set_report(hdev
, HID_FEATURE_REPORT
,
475 wacom
->wacom_wac
.bt_high_speed
= speed
;
481 * Note that if the raw queries fail, it's not a hard failure
482 * and it is safe to continue
484 hid_warn(hdev
, "failed to poke device, command %d, err %d\n",
489 wacom
->wacom_wac
.bt_features
&= ~0x20;
491 wacom
->wacom_wac
.bt_features
|= 0x20;
494 rep_data
[1] = wacom
->wacom_wac
.bt_features
;
496 ret
= wacom_set_report(hdev
, HID_FEATURE_REPORT
, rep_data
, 2,
499 wacom
->wacom_wac
.bt_high_speed
= speed
;
507 * Switch the tablet into its most-capable mode. Wacom tablets are
508 * typically configured to power-up in a mode which sends mouse-like
509 * reports to the OS. To get absolute position, pressure data, etc.
510 * from the tablet, it is necessary to switch the tablet out of this
511 * mode and into one which sends the full range of tablet data.
513 static int _wacom_query_tablet_data(struct wacom
*wacom
)
515 struct hid_device
*hdev
= wacom
->hdev
;
516 struct wacom_wac
*wacom_wac
= &wacom
->wacom_wac
;
517 struct wacom_features
*features
= &wacom_wac
->features
;
519 if (hdev
->bus
== BUS_BLUETOOTH
)
520 return wacom_bt_query_tablet_data(hdev
, 1, features
);
522 if (features
->type
!= HID_GENERIC
) {
523 if (features
->device_type
& WACOM_DEVICETYPE_TOUCH
) {
524 if (features
->type
> TABLETPC
) {
525 /* MT Tablet PC touch */
526 wacom_wac
->mode_report
= 3;
527 wacom_wac
->mode_value
= 4;
528 } else if (features
->type
== WACOM_24HDT
) {
529 wacom_wac
->mode_report
= 18;
530 wacom_wac
->mode_value
= 2;
531 } else if (features
->type
== WACOM_27QHDT
) {
532 wacom_wac
->mode_report
= 131;
533 wacom_wac
->mode_value
= 2;
534 } else if (features
->type
== BAMBOO_PAD
) {
535 wacom_wac
->mode_report
= 2;
536 wacom_wac
->mode_value
= 2;
538 } else if (features
->device_type
& WACOM_DEVICETYPE_PEN
) {
539 if (features
->type
<= BAMBOO_PT
) {
540 wacom_wac
->mode_report
= 2;
541 wacom_wac
->mode_value
= 2;
546 wacom_set_device_mode(hdev
, wacom_wac
);
548 if (features
->type
== HID_GENERIC
)
549 return wacom_hid_set_device_mode(hdev
);
554 static void wacom_retrieve_hid_descriptor(struct hid_device
*hdev
,
555 struct wacom_features
*features
)
557 struct wacom
*wacom
= hid_get_drvdata(hdev
);
558 struct usb_interface
*intf
= wacom
->intf
;
560 /* default features */
561 features
->x_fuzz
= 4;
562 features
->y_fuzz
= 4;
563 features
->pressure_fuzz
= 0;
564 features
->distance_fuzz
= 1;
565 features
->tilt_fuzz
= 1;
568 * The wireless device HID is basic and layout conflicts with
569 * other tablets (monitor and touch interface can look like pen).
570 * Skip the query for this type and modify defaults based on
573 if (features
->type
== WIRELESS
) {
574 if (intf
->cur_altsetting
->desc
.bInterfaceNumber
== 0)
575 features
->device_type
= WACOM_DEVICETYPE_WL_MONITOR
;
577 features
->device_type
= WACOM_DEVICETYPE_NONE
;
581 wacom_parse_hid(hdev
, features
);
584 struct wacom_hdev_data
{
585 struct list_head list
;
587 struct hid_device
*dev
;
588 struct wacom_shared shared
;
591 static LIST_HEAD(wacom_udev_list
);
592 static DEFINE_MUTEX(wacom_udev_list_lock
);
594 static bool compare_device_paths(struct hid_device
*hdev_a
,
595 struct hid_device
*hdev_b
, char separator
)
597 int n1
= strrchr(hdev_a
->phys
, separator
) - hdev_a
->phys
;
598 int n2
= strrchr(hdev_b
->phys
, separator
) - hdev_b
->phys
;
600 if (n1
!= n2
|| n1
<= 0 || n2
<= 0)
603 return !strncmp(hdev_a
->phys
, hdev_b
->phys
, n1
);
606 static bool wacom_are_sibling(struct hid_device
*hdev
,
607 struct hid_device
*sibling
)
609 struct wacom
*wacom
= hid_get_drvdata(hdev
);
610 struct wacom_features
*features
= &wacom
->wacom_wac
.features
;
611 struct wacom
*sibling_wacom
= hid_get_drvdata(sibling
);
612 struct wacom_features
*sibling_features
= &sibling_wacom
->wacom_wac
.features
;
613 __u32 oVid
= features
->oVid
? features
->oVid
: hdev
->vendor
;
614 __u32 oPid
= features
->oPid
? features
->oPid
: hdev
->product
;
616 /* The defined oVid/oPid must match that of the sibling */
617 if (features
->oVid
!= HID_ANY_ID
&& sibling
->vendor
!= oVid
)
619 if (features
->oPid
!= HID_ANY_ID
&& sibling
->product
!= oPid
)
623 * Devices with the same VID/PID must share the same physical
624 * device path, while those with different VID/PID must share
625 * the same physical parent device path.
627 if (hdev
->vendor
== sibling
->vendor
&& hdev
->product
== sibling
->product
) {
628 if (!compare_device_paths(hdev
, sibling
, '/'))
631 if (!compare_device_paths(hdev
, sibling
, '.'))
635 /* Skip the remaining heuristics unless you are a HID_GENERIC device */
636 if (features
->type
!= HID_GENERIC
)
640 * Direct-input devices may not be siblings of indirect-input
643 if ((features
->device_type
& WACOM_DEVICETYPE_DIRECT
) &&
644 !(sibling_features
->device_type
& WACOM_DEVICETYPE_DIRECT
))
648 * Indirect-input devices may not be siblings of direct-input
651 if (!(features
->device_type
& WACOM_DEVICETYPE_DIRECT
) &&
652 (sibling_features
->device_type
& WACOM_DEVICETYPE_DIRECT
))
655 /* Pen devices may only be siblings of touch devices */
656 if ((features
->device_type
& WACOM_DEVICETYPE_PEN
) &&
657 !(sibling_features
->device_type
& WACOM_DEVICETYPE_TOUCH
))
660 /* Touch devices may only be siblings of pen devices */
661 if ((features
->device_type
& WACOM_DEVICETYPE_TOUCH
) &&
662 !(sibling_features
->device_type
& WACOM_DEVICETYPE_PEN
))
666 * No reason could be found for these two devices to NOT be
667 * siblings, so there's a good chance they ARE siblings
672 static struct wacom_hdev_data
*wacom_get_hdev_data(struct hid_device
*hdev
)
674 struct wacom_hdev_data
*data
;
676 /* Try to find an already-probed interface from the same device */
677 list_for_each_entry(data
, &wacom_udev_list
, list
) {
678 if (compare_device_paths(hdev
, data
->dev
, '/')) {
679 kref_get(&data
->kref
);
684 /* Fallback to finding devices that appear to be "siblings" */
685 list_for_each_entry(data
, &wacom_udev_list
, list
) {
686 if (wacom_are_sibling(hdev
, data
->dev
)) {
687 kref_get(&data
->kref
);
695 static void wacom_release_shared_data(struct kref
*kref
)
697 struct wacom_hdev_data
*data
=
698 container_of(kref
, struct wacom_hdev_data
, kref
);
700 mutex_lock(&wacom_udev_list_lock
);
701 list_del(&data
->list
);
702 mutex_unlock(&wacom_udev_list_lock
);
707 static void wacom_remove_shared_data(void *res
)
709 struct wacom
*wacom
= res
;
710 struct wacom_hdev_data
*data
;
711 struct wacom_wac
*wacom_wac
= &wacom
->wacom_wac
;
713 if (wacom_wac
->shared
) {
714 data
= container_of(wacom_wac
->shared
, struct wacom_hdev_data
,
717 if (wacom_wac
->shared
->touch
== wacom
->hdev
)
718 wacom_wac
->shared
->touch
= NULL
;
719 else if (wacom_wac
->shared
->pen
== wacom
->hdev
)
720 wacom_wac
->shared
->pen
= NULL
;
722 kref_put(&data
->kref
, wacom_release_shared_data
);
723 wacom_wac
->shared
= NULL
;
727 static int wacom_add_shared_data(struct hid_device
*hdev
)
729 struct wacom
*wacom
= hid_get_drvdata(hdev
);
730 struct wacom_wac
*wacom_wac
= &wacom
->wacom_wac
;
731 struct wacom_hdev_data
*data
;
734 mutex_lock(&wacom_udev_list_lock
);
736 data
= wacom_get_hdev_data(hdev
);
738 data
= kzalloc(sizeof(struct wacom_hdev_data
), GFP_KERNEL
);
744 kref_init(&data
->kref
);
746 list_add_tail(&data
->list
, &wacom_udev_list
);
749 wacom_wac
->shared
= &data
->shared
;
751 retval
= devm_add_action(&hdev
->dev
, wacom_remove_shared_data
, wacom
);
753 mutex_unlock(&wacom_udev_list_lock
);
754 wacom_remove_shared_data(wacom
);
758 if (wacom_wac
->features
.device_type
& WACOM_DEVICETYPE_TOUCH
)
759 wacom_wac
->shared
->touch
= hdev
;
760 else if (wacom_wac
->features
.device_type
& WACOM_DEVICETYPE_PEN
)
761 wacom_wac
->shared
->pen
= hdev
;
764 mutex_unlock(&wacom_udev_list_lock
);
768 static int wacom_led_control(struct wacom
*wacom
)
772 unsigned char report_id
= WAC_CMD_LED_CONTROL
;
775 if (!wacom
->led
.groups
)
778 if (wacom
->wacom_wac
.features
.type
== REMOTE
)
781 if (wacom
->wacom_wac
.pid
) { /* wireless connected */
782 report_id
= WAC_CMD_WL_LED_CONTROL
;
785 else if (wacom
->wacom_wac
.features
.type
== INTUOSP2_BT
) {
786 report_id
= WAC_CMD_WL_INTUOSP2
;
789 buf
= kzalloc(buf_size
, GFP_KERNEL
);
793 if (wacom
->wacom_wac
.features
.type
== HID_GENERIC
) {
794 buf
[0] = WAC_CMD_LED_CONTROL_GENERIC
;
795 buf
[1] = wacom
->led
.llv
;
796 buf
[2] = wacom
->led
.groups
[0].select
& 0x03;
798 } else if ((wacom
->wacom_wac
.features
.type
>= INTUOS5S
&&
799 wacom
->wacom_wac
.features
.type
<= INTUOSPL
)) {
801 * Touch Ring and crop mark LED luminance may take on
802 * one of four values:
803 * 0 = Low; 1 = Medium; 2 = High; 3 = Off
805 int ring_led
= wacom
->led
.groups
[0].select
& 0x03;
806 int ring_lum
= (((wacom
->led
.llv
& 0x60) >> 5) - 1) & 0x03;
808 unsigned char led_bits
= (crop_lum
<< 4) | (ring_lum
<< 2) | (ring_led
);
811 if (wacom
->wacom_wac
.pid
) {
812 wacom_get_report(wacom
->hdev
, HID_FEATURE_REPORT
,
813 buf
, buf_size
, WAC_CMD_RETRIES
);
819 else if (wacom
->wacom_wac
.features
.type
== INTUOSP2_BT
) {
821 buf
[4] = 100; // Power Connection LED (ORANGE)
822 buf
[5] = 100; // BT Connection LED (BLUE)
823 buf
[6] = 100; // Paper Mode (RED?)
824 buf
[7] = 100; // Paper Mode (GREEN?)
825 buf
[8] = 100; // Paper Mode (BLUE?)
826 buf
[9] = wacom
->led
.llv
;
827 buf
[10] = wacom
->led
.groups
[0].select
& 0x03;
830 int led
= wacom
->led
.groups
[0].select
| 0x4;
832 if (wacom
->wacom_wac
.features
.type
== WACOM_21UX2
||
833 wacom
->wacom_wac
.features
.type
== WACOM_24HD
)
834 led
|= (wacom
->led
.groups
[1].select
<< 4) | 0x40;
838 buf
[2] = wacom
->led
.llv
;
839 buf
[3] = wacom
->led
.hlv
;
840 buf
[4] = wacom
->led
.img_lum
;
843 retval
= wacom_set_report(wacom
->hdev
, HID_FEATURE_REPORT
, buf
, buf_size
,
850 static int wacom_led_putimage(struct wacom
*wacom
, int button_id
, u8 xfer_id
,
851 const unsigned len
, const void *img
)
855 const unsigned chunk_len
= len
/ 4; /* 4 chunks are needed to be sent */
857 buf
= kzalloc(chunk_len
+ 3 , GFP_KERNEL
);
861 /* Send 'start' command */
862 buf
[0] = WAC_CMD_ICON_START
;
864 retval
= wacom_set_report(wacom
->hdev
, HID_FEATURE_REPORT
, buf
, 2,
870 buf
[1] = button_id
& 0x07;
871 for (i
= 0; i
< 4; i
++) {
873 memcpy(buf
+ 3, img
+ i
* chunk_len
, chunk_len
);
875 retval
= wacom_set_report(wacom
->hdev
, HID_FEATURE_REPORT
,
876 buf
, chunk_len
+ 3, WAC_CMD_RETRIES
);
882 buf
[0] = WAC_CMD_ICON_START
;
884 wacom_set_report(wacom
->hdev
, HID_FEATURE_REPORT
, buf
, 2,
892 static ssize_t
wacom_led_select_store(struct device
*dev
, int set_id
,
893 const char *buf
, size_t count
)
895 struct hid_device
*hdev
= to_hid_device(dev
);
896 struct wacom
*wacom
= hid_get_drvdata(hdev
);
900 err
= kstrtouint(buf
, 10, &id
);
904 mutex_lock(&wacom
->lock
);
906 wacom
->led
.groups
[set_id
].select
= id
& 0x3;
907 err
= wacom_led_control(wacom
);
909 mutex_unlock(&wacom
->lock
);
911 return err
< 0 ? err
: count
;
914 #define DEVICE_LED_SELECT_ATTR(SET_ID) \
915 static ssize_t wacom_led##SET_ID##_select_store(struct device *dev, \
916 struct device_attribute *attr, const char *buf, size_t count) \
918 return wacom_led_select_store(dev, SET_ID, buf, count); \
920 static ssize_t wacom_led##SET_ID##_select_show(struct device *dev, \
921 struct device_attribute *attr, char *buf) \
923 struct hid_device *hdev = to_hid_device(dev);\
924 struct wacom *wacom = hid_get_drvdata(hdev); \
925 return scnprintf(buf, PAGE_SIZE, "%d\n", \
926 wacom->led.groups[SET_ID].select); \
928 static DEVICE_ATTR(status_led##SET_ID##_select, DEV_ATTR_RW_PERM, \
929 wacom_led##SET_ID##_select_show, \
930 wacom_led##SET_ID##_select_store)
932 DEVICE_LED_SELECT_ATTR(0);
933 DEVICE_LED_SELECT_ATTR(1);
935 static ssize_t
wacom_luminance_store(struct wacom
*wacom
, u8
*dest
,
936 const char *buf
, size_t count
)
941 err
= kstrtouint(buf
, 10, &value
);
945 mutex_lock(&wacom
->lock
);
947 *dest
= value
& 0x7f;
948 err
= wacom_led_control(wacom
);
950 mutex_unlock(&wacom
->lock
);
952 return err
< 0 ? err
: count
;
955 #define DEVICE_LUMINANCE_ATTR(name, field) \
956 static ssize_t wacom_##name##_luminance_store(struct device *dev, \
957 struct device_attribute *attr, const char *buf, size_t count) \
959 struct hid_device *hdev = to_hid_device(dev);\
960 struct wacom *wacom = hid_get_drvdata(hdev); \
962 return wacom_luminance_store(wacom, &wacom->led.field, \
965 static ssize_t wacom_##name##_luminance_show(struct device *dev, \
966 struct device_attribute *attr, char *buf) \
968 struct wacom *wacom = dev_get_drvdata(dev); \
969 return scnprintf(buf, PAGE_SIZE, "%d\n", wacom->led.field); \
971 static DEVICE_ATTR(name##_luminance, DEV_ATTR_RW_PERM, \
972 wacom_##name##_luminance_show, \
973 wacom_##name##_luminance_store)
975 DEVICE_LUMINANCE_ATTR(status0
, llv
);
976 DEVICE_LUMINANCE_ATTR(status1
, hlv
);
977 DEVICE_LUMINANCE_ATTR(buttons
, img_lum
);
979 static ssize_t
wacom_button_image_store(struct device
*dev
, int button_id
,
980 const char *buf
, size_t count
)
982 struct hid_device
*hdev
= to_hid_device(dev
);
983 struct wacom
*wacom
= hid_get_drvdata(hdev
);
988 if (hdev
->bus
== BUS_BLUETOOTH
) {
990 xfer_id
= WAC_CMD_ICON_BT_XFER
;
993 xfer_id
= WAC_CMD_ICON_XFER
;
999 mutex_lock(&wacom
->lock
);
1001 err
= wacom_led_putimage(wacom
, button_id
, xfer_id
, len
, buf
);
1003 mutex_unlock(&wacom
->lock
);
1005 return err
< 0 ? err
: count
;
1008 #define DEVICE_BTNIMG_ATTR(BUTTON_ID) \
1009 static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev, \
1010 struct device_attribute *attr, const char *buf, size_t count) \
1012 return wacom_button_image_store(dev, BUTTON_ID, buf, count); \
1014 static DEVICE_ATTR(button##BUTTON_ID##_rawimg, DEV_ATTR_WO_PERM, \
1015 NULL, wacom_btnimg##BUTTON_ID##_store)
1017 DEVICE_BTNIMG_ATTR(0);
1018 DEVICE_BTNIMG_ATTR(1);
1019 DEVICE_BTNIMG_ATTR(2);
1020 DEVICE_BTNIMG_ATTR(3);
1021 DEVICE_BTNIMG_ATTR(4);
1022 DEVICE_BTNIMG_ATTR(5);
1023 DEVICE_BTNIMG_ATTR(6);
1024 DEVICE_BTNIMG_ATTR(7);
1026 static struct attribute
*cintiq_led_attrs
[] = {
1027 &dev_attr_status_led0_select
.attr
,
1028 &dev_attr_status_led1_select
.attr
,
1032 static struct attribute_group cintiq_led_attr_group
= {
1033 .name
= "wacom_led",
1034 .attrs
= cintiq_led_attrs
,
1037 static struct attribute
*intuos4_led_attrs
[] = {
1038 &dev_attr_status0_luminance
.attr
,
1039 &dev_attr_status1_luminance
.attr
,
1040 &dev_attr_status_led0_select
.attr
,
1041 &dev_attr_buttons_luminance
.attr
,
1042 &dev_attr_button0_rawimg
.attr
,
1043 &dev_attr_button1_rawimg
.attr
,
1044 &dev_attr_button2_rawimg
.attr
,
1045 &dev_attr_button3_rawimg
.attr
,
1046 &dev_attr_button4_rawimg
.attr
,
1047 &dev_attr_button5_rawimg
.attr
,
1048 &dev_attr_button6_rawimg
.attr
,
1049 &dev_attr_button7_rawimg
.attr
,
1053 static struct attribute_group intuos4_led_attr_group
= {
1054 .name
= "wacom_led",
1055 .attrs
= intuos4_led_attrs
,
1058 static struct attribute
*intuos5_led_attrs
[] = {
1059 &dev_attr_status0_luminance
.attr
,
1060 &dev_attr_status_led0_select
.attr
,
1064 static struct attribute_group intuos5_led_attr_group
= {
1065 .name
= "wacom_led",
1066 .attrs
= intuos5_led_attrs
,
1069 static struct attribute
*generic_led_attrs
[] = {
1070 &dev_attr_status0_luminance
.attr
,
1071 &dev_attr_status_led0_select
.attr
,
1075 static struct attribute_group generic_led_attr_group
= {
1076 .name
= "wacom_led",
1077 .attrs
= generic_led_attrs
,
1080 struct wacom_sysfs_group_devres
{
1081 struct attribute_group
*group
;
1082 struct kobject
*root
;
1085 static void wacom_devm_sysfs_group_release(struct device
*dev
, void *res
)
1087 struct wacom_sysfs_group_devres
*devres
= res
;
1088 struct kobject
*kobj
= devres
->root
;
1090 dev_dbg(dev
, "%s: dropping reference to %s\n",
1091 __func__
, devres
->group
->name
);
1092 sysfs_remove_group(kobj
, devres
->group
);
1095 static int __wacom_devm_sysfs_create_group(struct wacom
*wacom
,
1096 struct kobject
*root
,
1097 struct attribute_group
*group
)
1099 struct wacom_sysfs_group_devres
*devres
;
1102 devres
= devres_alloc(wacom_devm_sysfs_group_release
,
1103 sizeof(struct wacom_sysfs_group_devres
),
1108 devres
->group
= group
;
1109 devres
->root
= root
;
1111 error
= sysfs_create_group(devres
->root
, group
);
1115 devres_add(&wacom
->hdev
->dev
, devres
);
1120 static int wacom_devm_sysfs_create_group(struct wacom
*wacom
,
1121 struct attribute_group
*group
)
1123 return __wacom_devm_sysfs_create_group(wacom
, &wacom
->hdev
->dev
.kobj
,
1127 enum led_brightness
wacom_leds_brightness_get(struct wacom_led
*led
)
1129 struct wacom
*wacom
= led
->wacom
;
1131 if (wacom
->led
.max_hlv
)
1132 return led
->hlv
* LED_FULL
/ wacom
->led
.max_hlv
;
1134 if (wacom
->led
.max_llv
)
1135 return led
->llv
* LED_FULL
/ wacom
->led
.max_llv
;
1137 /* device doesn't support brightness tuning */
1141 static enum led_brightness
__wacom_led_brightness_get(struct led_classdev
*cdev
)
1143 struct wacom_led
*led
= container_of(cdev
, struct wacom_led
, cdev
);
1144 struct wacom
*wacom
= led
->wacom
;
1146 if (wacom
->led
.groups
[led
->group
].select
!= led
->id
)
1149 return wacom_leds_brightness_get(led
);
1152 static int wacom_led_brightness_set(struct led_classdev
*cdev
,
1153 enum led_brightness brightness
)
1155 struct wacom_led
*led
= container_of(cdev
, struct wacom_led
, cdev
);
1156 struct wacom
*wacom
= led
->wacom
;
1159 mutex_lock(&wacom
->lock
);
1161 if (!wacom
->led
.groups
|| (brightness
== LED_OFF
&&
1162 wacom
->led
.groups
[led
->group
].select
!= led
->id
)) {
1167 led
->llv
= wacom
->led
.llv
= wacom
->led
.max_llv
* brightness
/ LED_FULL
;
1168 led
->hlv
= wacom
->led
.hlv
= wacom
->led
.max_hlv
* brightness
/ LED_FULL
;
1170 wacom
->led
.groups
[led
->group
].select
= led
->id
;
1172 error
= wacom_led_control(wacom
);
1175 mutex_unlock(&wacom
->lock
);
1180 static void wacom_led_readonly_brightness_set(struct led_classdev
*cdev
,
1181 enum led_brightness brightness
)
1185 static int wacom_led_register_one(struct device
*dev
, struct wacom
*wacom
,
1186 struct wacom_led
*led
, unsigned int group
,
1187 unsigned int id
, bool read_only
)
1192 name
= devm_kasprintf(dev
, GFP_KERNEL
,
1201 led
->trigger
.name
= name
;
1202 error
= devm_led_trigger_register(dev
, &led
->trigger
);
1204 hid_err(wacom
->hdev
,
1205 "failed to register LED trigger %s: %d\n",
1206 led
->cdev
.name
, error
);
1214 led
->llv
= wacom
->led
.llv
;
1215 led
->hlv
= wacom
->led
.hlv
;
1216 led
->cdev
.name
= name
;
1217 led
->cdev
.max_brightness
= LED_FULL
;
1218 led
->cdev
.flags
= LED_HW_PLUGGABLE
;
1219 led
->cdev
.brightness_get
= __wacom_led_brightness_get
;
1221 led
->cdev
.brightness_set_blocking
= wacom_led_brightness_set
;
1222 led
->cdev
.default_trigger
= led
->cdev
.name
;
1224 led
->cdev
.brightness_set
= wacom_led_readonly_brightness_set
;
1227 error
= devm_led_classdev_register(dev
, &led
->cdev
);
1229 hid_err(wacom
->hdev
,
1230 "failed to register LED %s: %d\n",
1231 led
->cdev
.name
, error
);
1232 led
->cdev
.name
= NULL
;
1239 static void wacom_led_groups_release_one(void *data
)
1241 struct wacom_group_leds
*group
= data
;
1243 devres_release_group(group
->dev
, group
);
1246 static int wacom_led_groups_alloc_and_register_one(struct device
*dev
,
1247 struct wacom
*wacom
,
1248 int group_id
, int count
,
1251 struct wacom_led
*leds
;
1254 if (group_id
>= wacom
->led
.count
|| count
<= 0)
1257 if (!devres_open_group(dev
, &wacom
->led
.groups
[group_id
], GFP_KERNEL
))
1260 leds
= devm_kzalloc(dev
, sizeof(struct wacom_led
) * count
, GFP_KERNEL
);
1266 wacom
->led
.groups
[group_id
].leds
= leds
;
1267 wacom
->led
.groups
[group_id
].count
= count
;
1269 for (i
= 0; i
< count
; i
++) {
1270 error
= wacom_led_register_one(dev
, wacom
, &leds
[i
],
1271 group_id
, i
, read_only
);
1276 wacom
->led
.groups
[group_id
].dev
= dev
;
1278 devres_close_group(dev
, &wacom
->led
.groups
[group_id
]);
1281 * There is a bug (?) in devm_led_classdev_register() in which its
1282 * increments the refcount of the parent. If the parent is an input
1283 * device, that means the ref count never reaches 0 when
1284 * devm_input_device_release() gets called.
1285 * This means that the LEDs are still there after disconnect.
1286 * Manually force the release of the group so that the leds are released
1287 * once we are done using them.
1289 error
= devm_add_action_or_reset(&wacom
->hdev
->dev
,
1290 wacom_led_groups_release_one
,
1291 &wacom
->led
.groups
[group_id
]);
1298 devres_release_group(dev
, &wacom
->led
.groups
[group_id
]);
1302 struct wacom_led
*wacom_led_find(struct wacom
*wacom
, unsigned int group_id
,
1305 struct wacom_group_leds
*group
;
1307 if (group_id
>= wacom
->led
.count
)
1310 group
= &wacom
->led
.groups
[group_id
];
1317 return &group
->leds
[id
];
1321 * wacom_led_next: gives the next available led with a wacom trigger.
1323 * returns the next available struct wacom_led which has its default trigger
1324 * or the current one if none is available.
1326 struct wacom_led
*wacom_led_next(struct wacom
*wacom
, struct wacom_led
*cur
)
1328 struct wacom_led
*next_led
;
1338 next_led
= wacom_led_find(wacom
, group
, ++next
);
1339 if (!next_led
|| next_led
== cur
)
1341 } while (next_led
->cdev
.trigger
!= &next_led
->trigger
);
1346 static void wacom_led_groups_release(void *data
)
1348 struct wacom
*wacom
= data
;
1350 wacom
->led
.groups
= NULL
;
1351 wacom
->led
.count
= 0;
1354 static int wacom_led_groups_allocate(struct wacom
*wacom
, int count
)
1356 struct device
*dev
= &wacom
->hdev
->dev
;
1357 struct wacom_group_leds
*groups
;
1360 groups
= devm_kzalloc(dev
, sizeof(struct wacom_group_leds
) * count
,
1365 error
= devm_add_action_or_reset(dev
, wacom_led_groups_release
, wacom
);
1369 wacom
->led
.groups
= groups
;
1370 wacom
->led
.count
= count
;
1375 static int wacom_leds_alloc_and_register(struct wacom
*wacom
, int group_count
,
1376 int led_per_group
, bool read_only
)
1381 if (!wacom
->wacom_wac
.pad_input
)
1384 dev
= &wacom
->wacom_wac
.pad_input
->dev
;
1386 error
= wacom_led_groups_allocate(wacom
, group_count
);
1390 for (i
= 0; i
< group_count
; i
++) {
1391 error
= wacom_led_groups_alloc_and_register_one(dev
, wacom
, i
,
1401 int wacom_initialize_leds(struct wacom
*wacom
)
1405 if (!(wacom
->wacom_wac
.features
.device_type
& WACOM_DEVICETYPE_PAD
))
1408 /* Initialize default values */
1409 switch (wacom
->wacom_wac
.features
.type
) {
1411 if (!wacom
->generic_has_leds
)
1413 wacom
->led
.llv
= 100;
1414 wacom
->led
.max_llv
= 100;
1416 error
= wacom_leds_alloc_and_register(wacom
, 1, 4, false);
1418 hid_err(wacom
->hdev
,
1419 "cannot create leds err: %d\n", error
);
1423 error
= wacom_devm_sysfs_create_group(wacom
,
1424 &generic_led_attr_group
);
1431 wacom
->led
.llv
= 10;
1432 wacom
->led
.hlv
= 20;
1433 wacom
->led
.max_llv
= 127;
1434 wacom
->led
.max_hlv
= 127;
1435 wacom
->led
.img_lum
= 10;
1437 error
= wacom_leds_alloc_and_register(wacom
, 1, 4, false);
1439 hid_err(wacom
->hdev
,
1440 "cannot create leds err: %d\n", error
);
1444 error
= wacom_devm_sysfs_create_group(wacom
,
1445 &intuos4_led_attr_group
);
1452 wacom
->led
.img_lum
= 0;
1454 error
= wacom_leds_alloc_and_register(wacom
, 2, 4, false);
1456 hid_err(wacom
->hdev
,
1457 "cannot create leds err: %d\n", error
);
1461 error
= wacom_devm_sysfs_create_group(wacom
,
1462 &cintiq_led_attr_group
);
1471 wacom
->led
.llv
= 32;
1472 wacom
->led
.max_llv
= 96;
1474 error
= wacom_leds_alloc_and_register(wacom
, 1, 4, false);
1476 hid_err(wacom
->hdev
,
1477 "cannot create leds err: %d\n", error
);
1481 error
= wacom_devm_sysfs_create_group(wacom
,
1482 &intuos5_led_attr_group
);
1486 wacom
->led
.llv
= 50;
1487 wacom
->led
.max_llv
= 100;
1488 error
= wacom_leds_alloc_and_register(wacom
, 1, 4, false);
1490 hid_err(wacom
->hdev
,
1491 "cannot create leds err: %d\n", error
);
1497 wacom
->led
.llv
= 255;
1498 wacom
->led
.max_llv
= 255;
1499 error
= wacom_led_groups_allocate(wacom
, 5);
1501 hid_err(wacom
->hdev
,
1502 "cannot create leds err: %d\n", error
);
1512 hid_err(wacom
->hdev
,
1513 "cannot create sysfs group err: %d\n", error
);
1520 static void wacom_init_work(struct work_struct
*work
)
1522 struct wacom
*wacom
= container_of(work
, struct wacom
, init_work
.work
);
1524 _wacom_query_tablet_data(wacom
);
1525 wacom_led_control(wacom
);
1528 static void wacom_query_tablet_data(struct wacom
*wacom
)
1530 schedule_delayed_work(&wacom
->init_work
, msecs_to_jiffies(1000));
1533 static enum power_supply_property wacom_battery_props
[] = {
1534 POWER_SUPPLY_PROP_MODEL_NAME
,
1535 POWER_SUPPLY_PROP_PRESENT
,
1536 POWER_SUPPLY_PROP_STATUS
,
1537 POWER_SUPPLY_PROP_SCOPE
,
1538 POWER_SUPPLY_PROP_CAPACITY
1541 static int wacom_battery_get_property(struct power_supply
*psy
,
1542 enum power_supply_property psp
,
1543 union power_supply_propval
*val
)
1545 struct wacom_battery
*battery
= power_supply_get_drvdata(psy
);
1549 case POWER_SUPPLY_PROP_MODEL_NAME
:
1550 val
->strval
= battery
->wacom
->wacom_wac
.name
;
1552 case POWER_SUPPLY_PROP_PRESENT
:
1553 val
->intval
= battery
->bat_connected
;
1555 case POWER_SUPPLY_PROP_SCOPE
:
1556 val
->intval
= POWER_SUPPLY_SCOPE_DEVICE
;
1558 case POWER_SUPPLY_PROP_CAPACITY
:
1559 val
->intval
= battery
->battery_capacity
;
1561 case POWER_SUPPLY_PROP_STATUS
:
1562 if (battery
->bat_status
!= WACOM_POWER_SUPPLY_STATUS_AUTO
)
1563 val
->intval
= battery
->bat_status
;
1564 else if (battery
->bat_charging
)
1565 val
->intval
= POWER_SUPPLY_STATUS_CHARGING
;
1566 else if (battery
->battery_capacity
== 100 &&
1567 battery
->ps_connected
)
1568 val
->intval
= POWER_SUPPLY_STATUS_FULL
;
1569 else if (battery
->ps_connected
)
1570 val
->intval
= POWER_SUPPLY_STATUS_NOT_CHARGING
;
1572 val
->intval
= POWER_SUPPLY_STATUS_DISCHARGING
;
1582 static int __wacom_initialize_battery(struct wacom
*wacom
,
1583 struct wacom_battery
*battery
)
1585 static atomic_t battery_no
= ATOMIC_INIT(0);
1586 struct device
*dev
= &wacom
->hdev
->dev
;
1587 struct power_supply_config psy_cfg
= { .drv_data
= battery
, };
1588 struct power_supply
*ps_bat
;
1589 struct power_supply_desc
*bat_desc
= &battery
->bat_desc
;
1593 if (!devres_open_group(dev
, bat_desc
, GFP_KERNEL
))
1596 battery
->wacom
= wacom
;
1598 n
= atomic_inc_return(&battery_no
) - 1;
1600 bat_desc
->properties
= wacom_battery_props
;
1601 bat_desc
->num_properties
= ARRAY_SIZE(wacom_battery_props
);
1602 bat_desc
->get_property
= wacom_battery_get_property
;
1603 sprintf(battery
->bat_name
, "wacom_battery_%ld", n
);
1604 bat_desc
->name
= battery
->bat_name
;
1605 bat_desc
->type
= POWER_SUPPLY_TYPE_USB
;
1606 bat_desc
->use_for_apm
= 0;
1608 ps_bat
= devm_power_supply_register(dev
, bat_desc
, &psy_cfg
);
1609 if (IS_ERR(ps_bat
)) {
1610 error
= PTR_ERR(ps_bat
);
1614 power_supply_powers(ps_bat
, &wacom
->hdev
->dev
);
1616 battery
->battery
= ps_bat
;
1618 devres_close_group(dev
, bat_desc
);
1622 devres_release_group(dev
, bat_desc
);
1626 static int wacom_initialize_battery(struct wacom
*wacom
)
1628 if (wacom
->wacom_wac
.features
.quirks
& WACOM_QUIRK_BATTERY
)
1629 return __wacom_initialize_battery(wacom
, &wacom
->battery
);
1634 static void wacom_destroy_battery(struct wacom
*wacom
)
1636 if (wacom
->battery
.battery
) {
1637 devres_release_group(&wacom
->hdev
->dev
,
1638 &wacom
->battery
.bat_desc
);
1639 wacom
->battery
.battery
= NULL
;
1643 static ssize_t
wacom_show_speed(struct device
*dev
,
1644 struct device_attribute
1647 struct hid_device
*hdev
= to_hid_device(dev
);
1648 struct wacom
*wacom
= hid_get_drvdata(hdev
);
1650 return snprintf(buf
, PAGE_SIZE
, "%i\n", wacom
->wacom_wac
.bt_high_speed
);
1653 static ssize_t
wacom_store_speed(struct device
*dev
,
1654 struct device_attribute
*attr
,
1655 const char *buf
, size_t count
)
1657 struct hid_device
*hdev
= to_hid_device(dev
);
1658 struct wacom
*wacom
= hid_get_drvdata(hdev
);
1661 if (kstrtou8(buf
, 0, &new_speed
))
1664 if (new_speed
!= 0 && new_speed
!= 1)
1667 wacom_bt_query_tablet_data(hdev
, new_speed
, &wacom
->wacom_wac
.features
);
1672 static DEVICE_ATTR(speed
, DEV_ATTR_RW_PERM
,
1673 wacom_show_speed
, wacom_store_speed
);
1676 static ssize_t
wacom_show_remote_mode(struct kobject
*kobj
,
1677 struct kobj_attribute
*kattr
,
1678 char *buf
, int index
)
1680 struct device
*dev
= kobj_to_dev(kobj
->parent
);
1681 struct hid_device
*hdev
= to_hid_device(dev
);
1682 struct wacom
*wacom
= hid_get_drvdata(hdev
);
1685 mode
= wacom
->led
.groups
[index
].select
;
1686 return sprintf(buf
, "%d\n", mode
< 3 ? mode
: -1);
1689 #define DEVICE_EKR_ATTR_GROUP(SET_ID) \
1690 static ssize_t wacom_show_remote##SET_ID##_mode(struct kobject *kobj, \
1691 struct kobj_attribute *kattr, char *buf) \
1693 return wacom_show_remote_mode(kobj, kattr, buf, SET_ID); \
1695 static struct kobj_attribute remote##SET_ID##_mode_attr = { \
1696 .attr = {.name = "remote_mode", \
1697 .mode = DEV_ATTR_RO_PERM}, \
1698 .show = wacom_show_remote##SET_ID##_mode, \
1700 static struct attribute *remote##SET_ID##_serial_attrs[] = { \
1701 &remote##SET_ID##_mode_attr.attr, \
1704 static struct attribute_group remote##SET_ID##_serial_group = { \
1706 .attrs = remote##SET_ID##_serial_attrs, \
1709 DEVICE_EKR_ATTR_GROUP(0);
1710 DEVICE_EKR_ATTR_GROUP(1);
1711 DEVICE_EKR_ATTR_GROUP(2);
1712 DEVICE_EKR_ATTR_GROUP(3);
1713 DEVICE_EKR_ATTR_GROUP(4);
1715 static int wacom_remote_create_attr_group(struct wacom
*wacom
, __u32 serial
,
1719 struct wacom_remote
*remote
= wacom
->remote
;
1721 remote
->remotes
[index
].group
.name
= devm_kasprintf(&wacom
->hdev
->dev
,
1724 if (!remote
->remotes
[index
].group
.name
)
1727 error
= __wacom_devm_sysfs_create_group(wacom
, remote
->remote_dir
,
1728 &remote
->remotes
[index
].group
);
1730 remote
->remotes
[index
].group
.name
= NULL
;
1731 hid_err(wacom
->hdev
,
1732 "cannot create sysfs group err: %d\n", error
);
1739 static int wacom_cmd_unpair_remote(struct wacom
*wacom
, unsigned char selector
)
1741 const size_t buf_size
= 2;
1745 buf
= kzalloc(buf_size
, GFP_KERNEL
);
1749 buf
[0] = WAC_CMD_DELETE_PAIRING
;
1752 retval
= wacom_set_report(wacom
->hdev
, HID_OUTPUT_REPORT
, buf
,
1753 buf_size
, WAC_CMD_RETRIES
);
1759 static ssize_t
wacom_store_unpair_remote(struct kobject
*kobj
,
1760 struct kobj_attribute
*attr
,
1761 const char *buf
, size_t count
)
1763 unsigned char selector
= 0;
1764 struct device
*dev
= kobj_to_dev(kobj
->parent
);
1765 struct hid_device
*hdev
= to_hid_device(dev
);
1766 struct wacom
*wacom
= hid_get_drvdata(hdev
);
1769 if (!strncmp(buf
, "*\n", 2)) {
1770 selector
= WAC_CMD_UNPAIR_ALL
;
1772 hid_info(wacom
->hdev
, "remote: unrecognized unpair code: %s\n",
1777 mutex_lock(&wacom
->lock
);
1779 err
= wacom_cmd_unpair_remote(wacom
, selector
);
1780 mutex_unlock(&wacom
->lock
);
1782 return err
< 0 ? err
: count
;
1785 static struct kobj_attribute unpair_remote_attr
= {
1786 .attr
= {.name
= "unpair_remote", .mode
= 0200},
1787 .store
= wacom_store_unpair_remote
,
1790 static const struct attribute
*remote_unpair_attrs
[] = {
1791 &unpair_remote_attr
.attr
,
1795 static void wacom_remotes_destroy(void *data
)
1797 struct wacom
*wacom
= data
;
1798 struct wacom_remote
*remote
= wacom
->remote
;
1803 kobject_put(remote
->remote_dir
);
1804 kfifo_free(&remote
->remote_fifo
);
1805 wacom
->remote
= NULL
;
1808 static int wacom_initialize_remotes(struct wacom
*wacom
)
1811 struct wacom_remote
*remote
;
1814 if (wacom
->wacom_wac
.features
.type
!= REMOTE
)
1817 remote
= devm_kzalloc(&wacom
->hdev
->dev
, sizeof(*wacom
->remote
),
1822 wacom
->remote
= remote
;
1824 spin_lock_init(&remote
->remote_lock
);
1826 error
= kfifo_alloc(&remote
->remote_fifo
,
1827 5 * sizeof(struct wacom_remote_data
),
1830 hid_err(wacom
->hdev
, "failed allocating remote_fifo\n");
1834 remote
->remotes
[0].group
= remote0_serial_group
;
1835 remote
->remotes
[1].group
= remote1_serial_group
;
1836 remote
->remotes
[2].group
= remote2_serial_group
;
1837 remote
->remotes
[3].group
= remote3_serial_group
;
1838 remote
->remotes
[4].group
= remote4_serial_group
;
1840 remote
->remote_dir
= kobject_create_and_add("wacom_remote",
1841 &wacom
->hdev
->dev
.kobj
);
1842 if (!remote
->remote_dir
)
1845 error
= sysfs_create_files(remote
->remote_dir
, remote_unpair_attrs
);
1848 hid_err(wacom
->hdev
,
1849 "cannot create sysfs group err: %d\n", error
);
1853 for (i
= 0; i
< WACOM_MAX_REMOTES
; i
++) {
1854 wacom
->led
.groups
[i
].select
= WACOM_STATUS_UNKNOWN
;
1855 remote
->remotes
[i
].serial
= 0;
1858 error
= devm_add_action_or_reset(&wacom
->hdev
->dev
,
1859 wacom_remotes_destroy
, wacom
);
1866 static struct input_dev
*wacom_allocate_input(struct wacom
*wacom
)
1868 struct input_dev
*input_dev
;
1869 struct hid_device
*hdev
= wacom
->hdev
;
1870 struct wacom_wac
*wacom_wac
= &(wacom
->wacom_wac
);
1872 input_dev
= devm_input_allocate_device(&hdev
->dev
);
1876 input_dev
->name
= wacom_wac
->features
.name
;
1877 input_dev
->phys
= hdev
->phys
;
1878 input_dev
->dev
.parent
= &hdev
->dev
;
1879 input_dev
->open
= wacom_open
;
1880 input_dev
->close
= wacom_close
;
1881 input_dev
->uniq
= hdev
->uniq
;
1882 input_dev
->id
.bustype
= hdev
->bus
;
1883 input_dev
->id
.vendor
= hdev
->vendor
;
1884 input_dev
->id
.product
= wacom_wac
->pid
? wacom_wac
->pid
: hdev
->product
;
1885 input_dev
->id
.version
= hdev
->version
;
1886 input_set_drvdata(input_dev
, wacom
);
1891 static int wacom_allocate_inputs(struct wacom
*wacom
)
1893 struct wacom_wac
*wacom_wac
= &(wacom
->wacom_wac
);
1895 wacom_wac
->pen_input
= wacom_allocate_input(wacom
);
1896 wacom_wac
->touch_input
= wacom_allocate_input(wacom
);
1897 wacom_wac
->pad_input
= wacom_allocate_input(wacom
);
1898 if (!wacom_wac
->pen_input
||
1899 !wacom_wac
->touch_input
||
1900 !wacom_wac
->pad_input
)
1903 wacom_wac
->pen_input
->name
= wacom_wac
->pen_name
;
1904 wacom_wac
->touch_input
->name
= wacom_wac
->touch_name
;
1905 wacom_wac
->pad_input
->name
= wacom_wac
->pad_name
;
1910 static int wacom_register_inputs(struct wacom
*wacom
)
1912 struct input_dev
*pen_input_dev
, *touch_input_dev
, *pad_input_dev
;
1913 struct wacom_wac
*wacom_wac
= &(wacom
->wacom_wac
);
1916 pen_input_dev
= wacom_wac
->pen_input
;
1917 touch_input_dev
= wacom_wac
->touch_input
;
1918 pad_input_dev
= wacom_wac
->pad_input
;
1920 if (!pen_input_dev
|| !touch_input_dev
|| !pad_input_dev
)
1923 error
= wacom_setup_pen_input_capabilities(pen_input_dev
, wacom_wac
);
1925 /* no pen in use on this interface */
1926 input_free_device(pen_input_dev
);
1927 wacom_wac
->pen_input
= NULL
;
1928 pen_input_dev
= NULL
;
1930 error
= input_register_device(pen_input_dev
);
1935 error
= wacom_setup_touch_input_capabilities(touch_input_dev
, wacom_wac
);
1937 /* no touch in use on this interface */
1938 input_free_device(touch_input_dev
);
1939 wacom_wac
->touch_input
= NULL
;
1940 touch_input_dev
= NULL
;
1942 error
= input_register_device(touch_input_dev
);
1947 error
= wacom_setup_pad_input_capabilities(pad_input_dev
, wacom_wac
);
1949 /* no pad in use on this interface */
1950 input_free_device(pad_input_dev
);
1951 wacom_wac
->pad_input
= NULL
;
1952 pad_input_dev
= NULL
;
1954 error
= input_register_device(pad_input_dev
);
1962 wacom_wac
->pad_input
= NULL
;
1963 wacom_wac
->touch_input
= NULL
;
1964 wacom_wac
->pen_input
= NULL
;
1969 * Not all devices report physical dimensions from HID.
1970 * Compute the default from hardcoded logical dimension
1971 * and resolution before driver overwrites them.
1973 static void wacom_set_default_phy(struct wacom_features
*features
)
1975 if (features
->x_resolution
) {
1976 features
->x_phy
= (features
->x_max
* 100) /
1977 features
->x_resolution
;
1978 features
->y_phy
= (features
->y_max
* 100) /
1979 features
->y_resolution
;
1983 static void wacom_calculate_res(struct wacom_features
*features
)
1985 /* set unit to "100th of a mm" for devices not reported by HID */
1986 if (!features
->unit
) {
1987 features
->unit
= 0x11;
1988 features
->unitExpo
= -3;
1991 features
->x_resolution
= wacom_calc_hid_res(features
->x_max
,
1994 features
->unitExpo
);
1995 features
->y_resolution
= wacom_calc_hid_res(features
->y_max
,
1998 features
->unitExpo
);
2001 void wacom_battery_work(struct work_struct
*work
)
2003 struct wacom
*wacom
= container_of(work
, struct wacom
, battery_work
);
2005 if ((wacom
->wacom_wac
.features
.quirks
& WACOM_QUIRK_BATTERY
) &&
2006 !wacom
->battery
.battery
) {
2007 wacom_initialize_battery(wacom
);
2009 else if (!(wacom
->wacom_wac
.features
.quirks
& WACOM_QUIRK_BATTERY
) &&
2010 wacom
->battery
.battery
) {
2011 wacom_destroy_battery(wacom
);
2015 static size_t wacom_compute_pktlen(struct hid_device
*hdev
)
2017 struct hid_report_enum
*report_enum
;
2018 struct hid_report
*report
;
2021 report_enum
= hdev
->report_enum
+ HID_INPUT_REPORT
;
2023 list_for_each_entry(report
, &report_enum
->report_list
, list
) {
2024 size_t report_size
= hid_report_len(report
);
2025 if (report_size
> size
)
2032 static void wacom_update_name(struct wacom
*wacom
, const char *suffix
)
2034 struct wacom_wac
*wacom_wac
= &wacom
->wacom_wac
;
2035 struct wacom_features
*features
= &wacom_wac
->features
;
2036 char name
[WACOM_NAME_MAX
];
2038 /* Generic devices name unspecified */
2039 if ((features
->type
== HID_GENERIC
) && !strcmp("Wacom HID", features
->name
)) {
2040 char *product_name
= wacom
->hdev
->name
;
2042 if (hid_is_using_ll_driver(wacom
->hdev
, &usb_hid_driver
)) {
2043 struct usb_interface
*intf
= to_usb_interface(wacom
->hdev
->dev
.parent
);
2044 struct usb_device
*dev
= interface_to_usbdev(intf
);
2045 product_name
= dev
->product
;
2048 if (wacom
->hdev
->bus
== BUS_I2C
) {
2049 snprintf(name
, sizeof(name
), "%s %X",
2050 features
->name
, wacom
->hdev
->product
);
2051 } else if (strstr(product_name
, "Wacom") ||
2052 strstr(product_name
, "wacom") ||
2053 strstr(product_name
, "WACOM")) {
2054 strlcpy(name
, product_name
, sizeof(name
));
2056 snprintf(name
, sizeof(name
), "Wacom %s", product_name
);
2059 /* strip out excess whitespaces */
2061 char *gap
= strstr(name
, " ");
2064 /* shift everything including the terminator */
2065 memmove(gap
, gap
+1, strlen(gap
));
2068 /* get rid of trailing whitespace */
2069 if (name
[strlen(name
)-1] == ' ')
2070 name
[strlen(name
)-1] = '\0';
2072 strlcpy(name
, features
->name
, sizeof(name
));
2075 snprintf(wacom_wac
->name
, sizeof(wacom_wac
->name
), "%s%s",
2078 /* Append the device type to the name */
2079 snprintf(wacom_wac
->pen_name
, sizeof(wacom_wac
->pen_name
),
2080 "%s%s Pen", name
, suffix
);
2081 snprintf(wacom_wac
->touch_name
, sizeof(wacom_wac
->touch_name
),
2082 "%s%s Finger", name
, suffix
);
2083 snprintf(wacom_wac
->pad_name
, sizeof(wacom_wac
->pad_name
),
2084 "%s%s Pad", name
, suffix
);
2087 static void wacom_release_resources(struct wacom
*wacom
)
2089 struct hid_device
*hdev
= wacom
->hdev
;
2091 if (!wacom
->resources
)
2094 devres_release_group(&hdev
->dev
, wacom
);
2096 wacom
->resources
= false;
2098 wacom
->wacom_wac
.pen_input
= NULL
;
2099 wacom
->wacom_wac
.touch_input
= NULL
;
2100 wacom
->wacom_wac
.pad_input
= NULL
;
2103 static void wacom_set_shared_values(struct wacom_wac
*wacom_wac
)
2105 if (wacom_wac
->features
.device_type
& WACOM_DEVICETYPE_TOUCH
) {
2106 wacom_wac
->shared
->type
= wacom_wac
->features
.type
;
2107 wacom_wac
->shared
->touch_input
= wacom_wac
->touch_input
;
2110 if (wacom_wac
->has_mute_touch_switch
) {
2111 wacom_wac
->shared
->has_mute_touch_switch
= true;
2112 wacom_wac
->shared
->is_touch_on
= true;
2115 if (wacom_wac
->shared
->has_mute_touch_switch
&&
2116 wacom_wac
->shared
->touch_input
) {
2117 set_bit(EV_SW
, wacom_wac
->shared
->touch_input
->evbit
);
2118 input_set_capability(wacom_wac
->shared
->touch_input
, EV_SW
,
2123 static int wacom_parse_and_register(struct wacom
*wacom
, bool wireless
)
2125 struct wacom_wac
*wacom_wac
= &wacom
->wacom_wac
;
2126 struct wacom_features
*features
= &wacom_wac
->features
;
2127 struct hid_device
*hdev
= wacom
->hdev
;
2129 unsigned int connect_mask
= HID_CONNECT_HIDRAW
;
2131 features
->pktlen
= wacom_compute_pktlen(hdev
);
2132 if (features
->pktlen
> WACOM_PKGLEN_MAX
)
2135 if (!devres_open_group(&hdev
->dev
, wacom
, GFP_KERNEL
))
2138 wacom
->resources
= true;
2140 error
= wacom_allocate_inputs(wacom
);
2145 * Bamboo Pad has a generic hid handling for the Pen, and we switch it
2146 * into debug mode for the touch part.
2147 * We ignore the other interfaces.
2149 if (features
->type
== BAMBOO_PAD
) {
2150 if (features
->pktlen
== WACOM_PKGLEN_PENABLED
) {
2151 features
->type
= HID_GENERIC
;
2152 } else if ((features
->pktlen
!= WACOM_PKGLEN_BPAD_TOUCH
) &&
2153 (features
->pktlen
!= WACOM_PKGLEN_BPAD_TOUCH_USB
)) {
2159 /* set the default size in case we do not get them from hid */
2160 wacom_set_default_phy(features
);
2162 /* Retrieve the physical and logical size for touch devices */
2163 wacom_retrieve_hid_descriptor(hdev
, features
);
2164 wacom_setup_device_quirks(wacom
);
2166 if (features
->device_type
== WACOM_DEVICETYPE_NONE
&&
2167 features
->type
!= WIRELESS
) {
2168 error
= features
->type
== HID_GENERIC
? -ENODEV
: 0;
2170 dev_warn(&hdev
->dev
, "Unknown device_type for '%s'. %s.",
2172 error
? "Ignoring" : "Assuming pen");
2177 features
->device_type
|= WACOM_DEVICETYPE_PEN
;
2180 wacom_calculate_res(features
);
2182 wacom_update_name(wacom
, wireless
? " (WL)" : "");
2184 /* pen only Bamboo neither support touch nor pad */
2185 if ((features
->type
== BAMBOO_PEN
) &&
2186 ((features
->device_type
& WACOM_DEVICETYPE_TOUCH
) ||
2187 (features
->device_type
& WACOM_DEVICETYPE_PAD
))) {
2192 error
= wacom_add_shared_data(hdev
);
2196 if (!(features
->device_type
& WACOM_DEVICETYPE_WL_MONITOR
) &&
2197 (features
->quirks
& WACOM_QUIRK_BATTERY
)) {
2198 error
= wacom_initialize_battery(wacom
);
2203 error
= wacom_register_inputs(wacom
);
2207 if (wacom
->wacom_wac
.features
.device_type
& WACOM_DEVICETYPE_PAD
) {
2208 error
= wacom_initialize_leds(wacom
);
2212 error
= wacom_initialize_remotes(wacom
);
2217 if (features
->type
== HID_GENERIC
)
2218 connect_mask
|= HID_CONNECT_DRIVER
;
2220 /* Regular HID work starts now */
2221 error
= hid_hw_start(hdev
, connect_mask
);
2223 hid_err(hdev
, "hw start failed\n");
2228 /* Note that if query fails it is not a hard failure */
2229 wacom_query_tablet_data(wacom
);
2232 /* touch only Bamboo doesn't support pen */
2233 if ((features
->type
== BAMBOO_TOUCH
) &&
2234 (features
->device_type
& WACOM_DEVICETYPE_PEN
)) {
2235 cancel_delayed_work_sync(&wacom
->init_work
);
2236 _wacom_query_tablet_data(wacom
);
2241 if (features
->device_type
& WACOM_DEVICETYPE_WL_MONITOR
)
2242 error
= hid_hw_open(hdev
);
2244 wacom_set_shared_values(wacom_wac
);
2245 devres_close_group(&hdev
->dev
, wacom
);
2252 wacom_release_resources(wacom
);
2256 static void wacom_wireless_work(struct work_struct
*work
)
2258 struct wacom
*wacom
= container_of(work
, struct wacom
, wireless_work
);
2259 struct usb_device
*usbdev
= wacom
->usbdev
;
2260 struct wacom_wac
*wacom_wac
= &wacom
->wacom_wac
;
2261 struct hid_device
*hdev1
, *hdev2
;
2262 struct wacom
*wacom1
, *wacom2
;
2263 struct wacom_wac
*wacom_wac1
, *wacom_wac2
;
2267 * Regardless if this is a disconnect or a new tablet,
2268 * remove any existing input and battery devices.
2271 wacom_destroy_battery(wacom
);
2273 /* Stylus interface */
2274 hdev1
= usb_get_intfdata(usbdev
->config
->interface
[1]);
2275 wacom1
= hid_get_drvdata(hdev1
);
2276 wacom_wac1
= &(wacom1
->wacom_wac
);
2277 wacom_release_resources(wacom1
);
2279 /* Touch interface */
2280 hdev2
= usb_get_intfdata(usbdev
->config
->interface
[2]);
2281 wacom2
= hid_get_drvdata(hdev2
);
2282 wacom_wac2
= &(wacom2
->wacom_wac
);
2283 wacom_release_resources(wacom2
);
2285 if (wacom_wac
->pid
== 0) {
2286 hid_info(wacom
->hdev
, "wireless tablet disconnected\n");
2288 const struct hid_device_id
*id
= wacom_ids
;
2290 hid_info(wacom
->hdev
, "wireless tablet connected with PID %x\n",
2294 if (id
->vendor
== USB_VENDOR_ID_WACOM
&&
2295 id
->product
== wacom_wac
->pid
)
2301 hid_info(wacom
->hdev
, "ignoring unknown PID.\n");
2305 /* Stylus interface */
2306 wacom_wac1
->features
=
2307 *((struct wacom_features
*)id
->driver_data
);
2309 wacom_wac1
->pid
= wacom_wac
->pid
;
2311 error
= wacom_parse_and_register(wacom1
, true);
2315 /* Touch interface */
2316 if (wacom_wac1
->features
.touch_max
||
2317 (wacom_wac1
->features
.type
>= INTUOSHT
&&
2318 wacom_wac1
->features
.type
<= BAMBOO_PT
)) {
2319 wacom_wac2
->features
=
2320 *((struct wacom_features
*)id
->driver_data
);
2321 wacom_wac2
->pid
= wacom_wac
->pid
;
2323 error
= wacom_parse_and_register(wacom2
, true);
2328 strlcpy(wacom_wac
->name
, wacom_wac1
->name
,
2329 sizeof(wacom_wac
->name
));
2330 error
= wacom_initialize_battery(wacom
);
2338 wacom_release_resources(wacom1
);
2339 wacom_release_resources(wacom2
);
2343 static void wacom_remote_destroy_one(struct wacom
*wacom
, unsigned int index
)
2345 struct wacom_remote
*remote
= wacom
->remote
;
2346 u32 serial
= remote
->remotes
[index
].serial
;
2348 unsigned long flags
;
2350 spin_lock_irqsave(&remote
->remote_lock
, flags
);
2351 remote
->remotes
[index
].registered
= false;
2352 spin_unlock_irqrestore(&remote
->remote_lock
, flags
);
2354 if (remote
->remotes
[index
].battery
.battery
)
2355 devres_release_group(&wacom
->hdev
->dev
,
2356 &remote
->remotes
[index
].battery
.bat_desc
);
2358 if (remote
->remotes
[index
].group
.name
)
2359 devres_release_group(&wacom
->hdev
->dev
,
2360 &remote
->remotes
[index
]);
2362 for (i
= 0; i
< WACOM_MAX_REMOTES
; i
++) {
2363 if (remote
->remotes
[i
].serial
== serial
) {
2364 remote
->remotes
[i
].serial
= 0;
2365 remote
->remotes
[i
].group
.name
= NULL
;
2366 remote
->remotes
[i
].registered
= false;
2367 remote
->remotes
[i
].battery
.battery
= NULL
;
2368 wacom
->led
.groups
[i
].select
= WACOM_STATUS_UNKNOWN
;
2373 static int wacom_remote_create_one(struct wacom
*wacom
, u32 serial
,
2376 struct wacom_remote
*remote
= wacom
->remote
;
2377 struct device
*dev
= &wacom
->hdev
->dev
;
2380 /* A remote can pair more than once with an EKR,
2381 * check to make sure this serial isn't already paired.
2383 for (k
= 0; k
< WACOM_MAX_REMOTES
; k
++) {
2384 if (remote
->remotes
[k
].serial
== serial
)
2388 if (k
< WACOM_MAX_REMOTES
) {
2389 remote
->remotes
[index
].serial
= serial
;
2393 if (!devres_open_group(dev
, &remote
->remotes
[index
], GFP_KERNEL
))
2396 error
= wacom_remote_create_attr_group(wacom
, serial
, index
);
2400 remote
->remotes
[index
].input
= wacom_allocate_input(wacom
);
2401 if (!remote
->remotes
[index
].input
) {
2405 remote
->remotes
[index
].input
->uniq
= remote
->remotes
[index
].group
.name
;
2406 remote
->remotes
[index
].input
->name
= wacom
->wacom_wac
.pad_name
;
2408 if (!remote
->remotes
[index
].input
->name
) {
2413 error
= wacom_setup_pad_input_capabilities(remote
->remotes
[index
].input
,
2418 remote
->remotes
[index
].serial
= serial
;
2420 error
= input_register_device(remote
->remotes
[index
].input
);
2424 error
= wacom_led_groups_alloc_and_register_one(
2425 &remote
->remotes
[index
].input
->dev
,
2426 wacom
, index
, 3, true);
2430 remote
->remotes
[index
].registered
= true;
2432 devres_close_group(dev
, &remote
->remotes
[index
]);
2436 devres_release_group(dev
, &remote
->remotes
[index
]);
2437 remote
->remotes
[index
].serial
= 0;
2441 static int wacom_remote_attach_battery(struct wacom
*wacom
, int index
)
2443 struct wacom_remote
*remote
= wacom
->remote
;
2446 if (!remote
->remotes
[index
].registered
)
2449 if (remote
->remotes
[index
].battery
.battery
)
2452 if (wacom
->led
.groups
[index
].select
== WACOM_STATUS_UNKNOWN
)
2455 error
= __wacom_initialize_battery(wacom
,
2456 &wacom
->remote
->remotes
[index
].battery
);
2463 static void wacom_remote_work(struct work_struct
*work
)
2465 struct wacom
*wacom
= container_of(work
, struct wacom
, remote_work
);
2466 struct wacom_remote
*remote
= wacom
->remote
;
2467 struct wacom_remote_data data
;
2468 unsigned long flags
;
2473 spin_lock_irqsave(&remote
->remote_lock
, flags
);
2475 count
= kfifo_out(&remote
->remote_fifo
, &data
, sizeof(data
));
2477 if (count
!= sizeof(data
)) {
2478 hid_err(wacom
->hdev
,
2479 "workitem triggered without status available\n");
2480 spin_unlock_irqrestore(&remote
->remote_lock
, flags
);
2484 if (!kfifo_is_empty(&remote
->remote_fifo
))
2485 wacom_schedule_work(&wacom
->wacom_wac
, WACOM_WORKER_REMOTE
);
2487 spin_unlock_irqrestore(&remote
->remote_lock
, flags
);
2489 for (i
= 0; i
< WACOM_MAX_REMOTES
; i
++) {
2490 serial
= data
.remote
[i
].serial
;
2491 if (data
.remote
[i
].connected
) {
2493 if (remote
->remotes
[i
].serial
== serial
) {
2494 wacom_remote_attach_battery(wacom
, i
);
2498 if (remote
->remotes
[i
].serial
)
2499 wacom_remote_destroy_one(wacom
, i
);
2501 wacom_remote_create_one(wacom
, serial
, i
);
2503 } else if (remote
->remotes
[i
].serial
) {
2504 wacom_remote_destroy_one(wacom
, i
);
2509 static void wacom_mode_change_work(struct work_struct
*work
)
2511 struct wacom
*wacom
= container_of(work
, struct wacom
, mode_change_work
);
2512 struct wacom_shared
*shared
= wacom
->wacom_wac
.shared
;
2513 struct wacom
*wacom1
= NULL
;
2514 struct wacom
*wacom2
= NULL
;
2515 bool is_direct
= wacom
->wacom_wac
.is_direct_mode
;
2519 wacom1
= hid_get_drvdata(shared
->pen
);
2520 wacom_release_resources(wacom1
);
2521 hid_hw_stop(wacom1
->hdev
);
2522 wacom1
->wacom_wac
.has_mode_change
= true;
2523 wacom1
->wacom_wac
.is_direct_mode
= is_direct
;
2526 if (shared
->touch
) {
2527 wacom2
= hid_get_drvdata(shared
->touch
);
2528 wacom_release_resources(wacom2
);
2529 hid_hw_stop(wacom2
->hdev
);
2530 wacom2
->wacom_wac
.has_mode_change
= true;
2531 wacom2
->wacom_wac
.is_direct_mode
= is_direct
;
2535 error
= wacom_parse_and_register(wacom1
, false);
2541 error
= wacom_parse_and_register(wacom2
, false);
2549 static int wacom_probe(struct hid_device
*hdev
,
2550 const struct hid_device_id
*id
)
2552 struct usb_interface
*intf
= to_usb_interface(hdev
->dev
.parent
);
2553 struct usb_device
*dev
= interface_to_usbdev(intf
);
2554 struct wacom
*wacom
;
2555 struct wacom_wac
*wacom_wac
;
2556 struct wacom_features
*features
;
2559 if (!id
->driver_data
)
2562 hdev
->quirks
|= HID_QUIRK_NO_INIT_REPORTS
;
2564 /* hid-core sets this quirk for the boot interface */
2565 hdev
->quirks
&= ~HID_QUIRK_NOGET
;
2567 wacom
= devm_kzalloc(&hdev
->dev
, sizeof(struct wacom
), GFP_KERNEL
);
2571 hid_set_drvdata(hdev
, wacom
);
2574 wacom_wac
= &wacom
->wacom_wac
;
2575 wacom_wac
->features
= *((struct wacom_features
*)id
->driver_data
);
2576 features
= &wacom_wac
->features
;
2578 if (features
->check_for_hid_type
&& features
->hid_type
!= hdev
->type
) {
2583 wacom_wac
->hid_data
.inputmode
= -1;
2584 wacom_wac
->mode_report
= -1;
2586 wacom
->usbdev
= dev
;
2588 mutex_init(&wacom
->lock
);
2589 INIT_DELAYED_WORK(&wacom
->init_work
, wacom_init_work
);
2590 INIT_WORK(&wacom
->wireless_work
, wacom_wireless_work
);
2591 INIT_WORK(&wacom
->battery_work
, wacom_battery_work
);
2592 INIT_WORK(&wacom
->remote_work
, wacom_remote_work
);
2593 INIT_WORK(&wacom
->mode_change_work
, wacom_mode_change_work
);
2595 /* ask for the report descriptor to be loaded by HID */
2596 error
= hid_parse(hdev
);
2598 hid_err(hdev
, "parse failed\n");
2602 error
= wacom_parse_and_register(wacom
, false);
2606 if (hdev
->bus
== BUS_BLUETOOTH
) {
2607 error
= device_create_file(&hdev
->dev
, &dev_attr_speed
);
2610 "can't create sysfs speed attribute err: %d\n",
2617 hid_set_drvdata(hdev
, NULL
);
2621 static void wacom_remove(struct hid_device
*hdev
)
2623 struct wacom
*wacom
= hid_get_drvdata(hdev
);
2624 struct wacom_wac
*wacom_wac
= &wacom
->wacom_wac
;
2625 struct wacom_features
*features
= &wacom_wac
->features
;
2627 if (features
->device_type
& WACOM_DEVICETYPE_WL_MONITOR
)
2632 cancel_delayed_work_sync(&wacom
->init_work
);
2633 cancel_work_sync(&wacom
->wireless_work
);
2634 cancel_work_sync(&wacom
->battery_work
);
2635 cancel_work_sync(&wacom
->remote_work
);
2636 cancel_work_sync(&wacom
->mode_change_work
);
2637 if (hdev
->bus
== BUS_BLUETOOTH
)
2638 device_remove_file(&hdev
->dev
, &dev_attr_speed
);
2640 /* make sure we don't trigger the LEDs */
2641 wacom_led_groups_release(wacom
);
2643 if (wacom
->wacom_wac
.features
.type
!= REMOTE
)
2644 wacom_release_resources(wacom
);
2646 hid_set_drvdata(hdev
, NULL
);
2650 static int wacom_resume(struct hid_device
*hdev
)
2652 struct wacom
*wacom
= hid_get_drvdata(hdev
);
2654 mutex_lock(&wacom
->lock
);
2656 /* switch to wacom mode first */
2657 _wacom_query_tablet_data(wacom
);
2658 wacom_led_control(wacom
);
2660 mutex_unlock(&wacom
->lock
);
2665 static int wacom_reset_resume(struct hid_device
*hdev
)
2667 return wacom_resume(hdev
);
2669 #endif /* CONFIG_PM */
2671 static struct hid_driver wacom_driver
= {
2673 .id_table
= wacom_ids
,
2674 .probe
= wacom_probe
,
2675 .remove
= wacom_remove
,
2676 .report
= wacom_wac_report
,
2678 .resume
= wacom_resume
,
2679 .reset_resume
= wacom_reset_resume
,
2681 .raw_event
= wacom_raw_event
,
2683 module_hid_driver(wacom_driver
);
2685 MODULE_VERSION(DRIVER_VERSION
);
2686 MODULE_AUTHOR(DRIVER_AUTHOR
);
2687 MODULE_DESCRIPTION(DRIVER_DESC
);
2688 MODULE_LICENSE("GPL");