2 * Bluetooth Wacom Tablet support
4 * Copyright (c) 1999 Andreas Gal
5 * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
6 * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
7 * Copyright (c) 2006-2007 Jiri Kosina
8 * Copyright (c) 2007 Paul Walmsley
9 * Copyright (c) 2008 Jiri Slaby <jirislaby@gmail.com>
10 * Copyright (c) 2006 Andrew Zabolotny <zap@homelink.ru>
11 * Copyright (c) 2009 Bastien Nocera <hadess@hadess.net>
12 * Copyright (c) 2011 Przemysław Firszt <przemo@firszt.eu>
16 * This program is free software; you can redistribute it and/or modify it
17 * under the terms of the GNU General Public License as published by the Free
18 * Software Foundation; either version 2 of the License, or (at your option)
22 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
24 #include <linux/device.h>
25 #include <linux/hid.h>
26 #include <linux/module.h>
27 #include <linux/slab.h>
28 #ifdef CONFIG_HID_WACOM_POWER_SUPPLY
29 #include <linux/power_supply.h>
34 #define PAD_DEVICE_ID 0x0F
43 unsigned char high_speed
;
44 #ifdef CONFIG_HID_WACOM_POWER_SUPPLY
46 struct power_supply battery
;
47 struct power_supply ac
;
51 #ifdef CONFIG_HID_WACOM_POWER_SUPPLY
52 /*percent of battery capacity, 0 means AC online*/
53 static unsigned short batcap
[8] = { 1, 15, 25, 35, 50, 70, 100, 0 };
55 static enum power_supply_property wacom_battery_props
[] = {
56 POWER_SUPPLY_PROP_PRESENT
,
57 POWER_SUPPLY_PROP_CAPACITY
,
58 POWER_SUPPLY_PROP_SCOPE
,
61 static enum power_supply_property wacom_ac_props
[] = {
62 POWER_SUPPLY_PROP_PRESENT
,
63 POWER_SUPPLY_PROP_ONLINE
,
64 POWER_SUPPLY_PROP_SCOPE
,
67 static int wacom_battery_get_property(struct power_supply
*psy
,
68 enum power_supply_property psp
,
69 union power_supply_propval
*val
)
71 struct wacom_data
*wdata
= container_of(psy
,
72 struct wacom_data
, battery
);
73 int power_state
= batcap
[wdata
->battery_capacity
];
77 case POWER_SUPPLY_PROP_PRESENT
:
80 case POWER_SUPPLY_PROP_SCOPE
:
81 val
->intval
= POWER_SUPPLY_SCOPE_DEVICE
;
83 case POWER_SUPPLY_PROP_CAPACITY
:
84 /* show 100% battery capacity when charging */
88 val
->intval
= power_state
;
97 static int wacom_ac_get_property(struct power_supply
*psy
,
98 enum power_supply_property psp
,
99 union power_supply_propval
*val
)
101 struct wacom_data
*wdata
= container_of(psy
, struct wacom_data
, ac
);
102 int power_state
= batcap
[wdata
->battery_capacity
];
106 case POWER_SUPPLY_PROP_PRESENT
:
108 case POWER_SUPPLY_PROP_ONLINE
:
109 if (power_state
== 0)
114 case POWER_SUPPLY_PROP_SCOPE
:
115 val
->intval
= POWER_SUPPLY_SCOPE_DEVICE
;
125 static void wacom_set_features(struct hid_device
*hdev
)
130 /*set high speed, tablet mode*/
133 ret
= hdev
->hid_output_raw_report(hdev
, rep_data
, 2,
138 static void wacom_poke(struct hid_device
*hdev
, u8 speed
)
140 struct wacom_data
*wdata
= hid_get_drvdata(hdev
);
144 rep_data
[0] = 0x03 ; rep_data
[1] = 0x00;
147 ret
= hdev
->hid_output_raw_report(hdev
, rep_data
, 2,
149 } while (ret
< 0 && limit
-- > 0);
160 ret
= hdev
->hid_output_raw_report(hdev
, rep_data
, 2,
162 } while (ret
< 0 && limit
-- > 0);
165 wdata
->high_speed
= speed
;
171 * Note that if the raw queries fail, it's not a hard failure and it
172 * is safe to continue
174 hid_warn(hdev
, "failed to poke device, command %d, err %d\n",
179 static ssize_t
wacom_show_speed(struct device
*dev
,
180 struct device_attribute
183 struct wacom_data
*wdata
= dev_get_drvdata(dev
);
185 return snprintf(buf
, PAGE_SIZE
, "%i\n", wdata
->high_speed
);
188 static ssize_t
wacom_store_speed(struct device
*dev
,
189 struct device_attribute
*attr
,
190 const char *buf
, size_t count
)
192 struct hid_device
*hdev
= container_of(dev
, struct hid_device
, dev
);
195 if (sscanf(buf
, "%1d", &new_speed
) != 1)
198 if (new_speed
== 0 || new_speed
== 1) {
199 wacom_poke(hdev
, new_speed
);
200 return strnlen(buf
, PAGE_SIZE
);
205 static DEVICE_ATTR(speed
, S_IRUGO
| S_IWUSR
| S_IWGRP
,
206 wacom_show_speed
, wacom_store_speed
);
208 static int wacom_gr_parse_report(struct hid_device
*hdev
,
209 struct wacom_data
*wdata
,
210 struct input_dev
*input
, unsigned char *data
)
215 /* Get X & Y positions */
216 x
= le16_to_cpu(*(__le16
*) &data
[2]);
217 y
= le16_to_cpu(*(__le16
*) &data
[4]);
219 /* Get current tool identifier */
220 if (data
[1] & 0x90) { /* If pen is in the in/active area */
221 switch ((data
[1] >> 5) & 3) {
227 tool
= BTN_TOOL_RUBBER
;
230 case 2: /* Mouse with wheel */
231 case 3: /* Mouse without wheel */
232 tool
= BTN_TOOL_MOUSE
;
236 /* Reset tool if out of active tablet area */
237 if (!(data
[1] & 0x10))
241 /* If tool changed, notify input subsystem */
242 if (wdata
->tool
!= tool
) {
244 /* Completely reset old tool state */
245 if (wdata
->tool
== BTN_TOOL_MOUSE
) {
246 input_report_key(input
, BTN_LEFT
, 0);
247 input_report_key(input
, BTN_RIGHT
, 0);
248 input_report_key(input
, BTN_MIDDLE
, 0);
249 input_report_abs(input
, ABS_DISTANCE
,
250 input_abs_get_max(input
, ABS_DISTANCE
));
252 input_report_key(input
, BTN_TOUCH
, 0);
253 input_report_key(input
, BTN_STYLUS
, 0);
254 input_report_key(input
, BTN_STYLUS2
, 0);
255 input_report_abs(input
, ABS_PRESSURE
, 0);
257 input_report_key(input
, wdata
->tool
, 0);
262 input_report_key(input
, tool
, 1);
266 input_report_abs(input
, ABS_X
, x
);
267 input_report_abs(input
, ABS_Y
, y
);
269 switch ((data
[1] >> 5) & 3) {
270 case 2: /* Mouse with wheel */
271 input_report_key(input
, BTN_MIDDLE
, data
[1] & 0x04);
272 rw
= (data
[6] & 0x01) ? -1 :
273 (data
[6] & 0x02) ? 1 : 0;
274 input_report_rel(input
, REL_WHEEL
, rw
);
277 case 3: /* Mouse without wheel */
278 input_report_key(input
, BTN_LEFT
, data
[1] & 0x01);
279 input_report_key(input
, BTN_RIGHT
, data
[1] & 0x02);
280 /* Compute distance between mouse and tablet */
281 rw
= 44 - (data
[6] >> 2);
286 input_report_abs(input
, ABS_DISTANCE
, rw
);
290 input_report_abs(input
, ABS_PRESSURE
,
291 data
[6] | (((__u16
) (data
[1] & 0x08)) << 5));
292 input_report_key(input
, BTN_TOUCH
, data
[1] & 0x01);
293 input_report_key(input
, BTN_STYLUS
, data
[1] & 0x02);
294 input_report_key(input
, BTN_STYLUS2
, (tool
== BTN_TOOL_PEN
) && data
[1] & 0x04);
301 /* Report the state of the two buttons at the top of the tablet
302 * as two extra fingerpad keys (buttons 4 & 5). */
304 if (rw
!= wdata
->butstate
) {
305 wdata
->butstate
= rw
;
306 input_report_key(input
, BTN_0
, rw
& 0x02);
307 input_report_key(input
, BTN_1
, rw
& 0x01);
308 input_report_key(input
, BTN_TOOL_FINGER
, 0xf0);
309 input_event(input
, EV_MSC
, MSC_SERIAL
, 0xf0);
313 #ifdef CONFIG_HID_WACOM_POWER_SUPPLY
314 /* Store current battery capacity */
315 rw
= (data
[7] >> 2 & 0x07);
316 if (rw
!= wdata
->battery_capacity
)
317 wdata
->battery_capacity
= rw
;
322 static void wacom_i4_parse_button_report(struct wacom_data
*wdata
,
323 struct input_dev
*input
, unsigned char *data
)
329 new_whlstate
= data
[1];
330 if (new_whlstate
!= wdata
->whlstate
) {
331 wdata
->whlstate
= new_whlstate
;
332 if (new_whlstate
& 0x80) {
333 input_report_key(input
, BTN_TOUCH
, 1);
334 input_report_abs(input
, ABS_WHEEL
, (new_whlstate
& 0x7f));
335 input_report_key(input
, BTN_TOOL_FINGER
, 1);
337 input_report_key(input
, BTN_TOUCH
, 0);
338 input_report_abs(input
, ABS_WHEEL
, 0);
339 input_report_key(input
, BTN_TOOL_FINGER
, 0);
344 new_butstate
= (data
[3] << 1) | (data
[2] & 0x01);
345 if (new_butstate
!= wdata
->butstate
) {
346 wdata
->butstate
= new_butstate
;
347 input_report_key(input
, BTN_0
, new_butstate
& 0x001);
348 input_report_key(input
, BTN_1
, new_butstate
& 0x002);
349 input_report_key(input
, BTN_2
, new_butstate
& 0x004);
350 input_report_key(input
, BTN_3
, new_butstate
& 0x008);
351 input_report_key(input
, BTN_4
, new_butstate
& 0x010);
352 input_report_key(input
, BTN_5
, new_butstate
& 0x020);
353 input_report_key(input
, BTN_6
, new_butstate
& 0x040);
354 input_report_key(input
, BTN_7
, new_butstate
& 0x080);
355 input_report_key(input
, BTN_8
, new_butstate
& 0x100);
356 input_report_key(input
, BTN_TOOL_FINGER
, 1);
361 input_report_abs(input
, ABS_MISC
, PAD_DEVICE_ID
);
362 input_event(input
, EV_MSC
, MSC_SERIAL
, 0xffffffff);
367 static void wacom_i4_parse_pen_report(struct wacom_data
*wdata
,
368 struct input_dev
*input
, unsigned char *data
)
370 __u16 x
, y
, pressure
;
374 case 0x80: /* Out of proximity report */
375 input_report_key(input
, BTN_TOUCH
, 0);
376 input_report_abs(input
, ABS_PRESSURE
, 0);
377 input_report_key(input
, BTN_STYLUS
, 0);
378 input_report_key(input
, BTN_STYLUS2
, 0);
379 input_report_key(input
, wdata
->tool
, 0);
380 input_report_abs(input
, ABS_MISC
, 0);
381 input_event(input
, EV_MSC
, MSC_SERIAL
, wdata
->serial
);
385 case 0xC2: /* Tool report */
386 wdata
->id
= ((data
[2] << 4) | (data
[3] >> 4) |
387 ((data
[7] & 0x0f) << 20) |
388 ((data
[8] & 0xf0) << 12));
389 wdata
->serial
= ((data
[3] & 0x0f) << 28) +
390 (data
[4] << 20) + (data
[5] << 12) +
391 (data
[6] << 4) + (data
[7] >> 4);
395 wdata
->tool
= BTN_TOOL_PEN
;
398 wdata
->tool
= BTN_TOOL_RUBBER
;
402 default: /* Position/pressure report */
403 x
= data
[2] << 9 | data
[3] << 1 | ((data
[9] & 0x02) >> 1);
404 y
= data
[4] << 9 | data
[5] << 1 | (data
[9] & 0x01);
405 pressure
= (data
[6] << 3) | ((data
[7] & 0xC0) >> 5)
407 distance
= (data
[9] >> 2) & 0x3f;
409 input_report_key(input
, BTN_TOUCH
, pressure
> 1);
411 input_report_key(input
, BTN_STYLUS
, data
[1] & 0x02);
412 input_report_key(input
, BTN_STYLUS2
, data
[1] & 0x04);
413 input_report_key(input
, wdata
->tool
, 1);
414 input_report_abs(input
, ABS_X
, x
);
415 input_report_abs(input
, ABS_Y
, y
);
416 input_report_abs(input
, ABS_PRESSURE
, pressure
);
417 input_report_abs(input
, ABS_DISTANCE
, distance
);
418 input_report_abs(input
, ABS_MISC
, wdata
->id
);
419 input_event(input
, EV_MSC
, MSC_SERIAL
, wdata
->serial
);
420 input_report_key(input
, wdata
->tool
, 1);
428 static void wacom_i4_parse_report(struct hid_device
*hdev
,
429 struct wacom_data
*wdata
,
430 struct input_dev
*input
, unsigned char *data
)
433 case 0x00: /* Empty report */
435 case 0x02: /* Pen report */
436 wacom_i4_parse_pen_report(wdata
, input
, data
);
438 case 0x03: /* Features Report */
439 wdata
->features
= data
[2];
441 case 0x0C: /* Button report */
442 wacom_i4_parse_button_report(wdata
, input
, data
);
445 hid_err(hdev
, "Unknown report: %d,%d\n", data
[0], data
[1]);
450 static int wacom_raw_event(struct hid_device
*hdev
, struct hid_report
*report
,
451 u8
*raw_data
, int size
)
453 struct wacom_data
*wdata
= hid_get_drvdata(hdev
);
454 struct hid_input
*hidinput
;
455 struct input_dev
*input
;
456 unsigned char *data
= (unsigned char *) raw_data
;
459 if (!(hdev
->claimed
& HID_CLAIMED_INPUT
))
462 hidinput
= list_entry(hdev
->inputs
.next
, struct hid_input
, list
);
463 input
= hidinput
->input
;
465 /* Check if this is a tablet report */
469 switch (hdev
->product
) {
470 case USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH
:
471 return wacom_gr_parse_report(hdev
, wdata
, input
, data
);
473 case USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH
:
478 wacom_i4_parse_report(hdev
, wdata
, input
, data
+ i
);
482 wacom_i4_parse_report(hdev
, wdata
, input
, data
+ i
);
484 wacom_i4_parse_report(hdev
, wdata
, input
, data
+ i
);
487 hid_err(hdev
, "Unknown report: %d,%d size:%d\n",
488 data
[0], data
[1], size
);
495 static int wacom_input_mapped(struct hid_device
*hdev
, struct hid_input
*hi
,
496 struct hid_field
*field
, struct hid_usage
*usage
, unsigned long **bit
,
499 struct input_dev
*input
= hi
->input
;
501 __set_bit(INPUT_PROP_POINTER
, input
->propbit
);
504 input
->evbit
[0] |= BIT(EV_KEY
) | BIT(EV_ABS
) | BIT(EV_REL
);
506 __set_bit(REL_WHEEL
, input
->relbit
);
508 __set_bit(BTN_TOOL_PEN
, input
->keybit
);
509 __set_bit(BTN_TOUCH
, input
->keybit
);
510 __set_bit(BTN_STYLUS
, input
->keybit
);
511 __set_bit(BTN_STYLUS2
, input
->keybit
);
512 __set_bit(BTN_LEFT
, input
->keybit
);
513 __set_bit(BTN_RIGHT
, input
->keybit
);
514 __set_bit(BTN_MIDDLE
, input
->keybit
);
517 input_set_capability(input
, EV_MSC
, MSC_SERIAL
);
519 __set_bit(BTN_0
, input
->keybit
);
520 __set_bit(BTN_1
, input
->keybit
);
521 __set_bit(BTN_TOOL_FINGER
, input
->keybit
);
523 /* Distance, rubber and mouse */
524 __set_bit(BTN_TOOL_RUBBER
, input
->keybit
);
525 __set_bit(BTN_TOOL_MOUSE
, input
->keybit
);
527 switch (hdev
->product
) {
528 case USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH
:
529 input_set_abs_params(input
, ABS_X
, 0, 16704, 4, 0);
530 input_set_abs_params(input
, ABS_Y
, 0, 12064, 4, 0);
531 input_set_abs_params(input
, ABS_PRESSURE
, 0, 511, 0, 0);
532 input_set_abs_params(input
, ABS_DISTANCE
, 0, 32, 0, 0);
534 case USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH
:
535 __set_bit(ABS_WHEEL
, input
->absbit
);
536 __set_bit(ABS_MISC
, input
->absbit
);
537 __set_bit(BTN_2
, input
->keybit
);
538 __set_bit(BTN_3
, input
->keybit
);
539 __set_bit(BTN_4
, input
->keybit
);
540 __set_bit(BTN_5
, input
->keybit
);
541 __set_bit(BTN_6
, input
->keybit
);
542 __set_bit(BTN_7
, input
->keybit
);
543 __set_bit(BTN_8
, input
->keybit
);
544 input_set_abs_params(input
, ABS_WHEEL
, 0, 71, 0, 0);
545 input_set_abs_params(input
, ABS_X
, 0, 40640, 4, 0);
546 input_set_abs_params(input
, ABS_Y
, 0, 25400, 4, 0);
547 input_set_abs_params(input
, ABS_PRESSURE
, 0, 2047, 0, 0);
548 input_set_abs_params(input
, ABS_DISTANCE
, 0, 63, 0, 0);
555 static int wacom_probe(struct hid_device
*hdev
,
556 const struct hid_device_id
*id
)
558 struct wacom_data
*wdata
;
561 wdata
= kzalloc(sizeof(*wdata
), GFP_KERNEL
);
563 hid_err(hdev
, "can't alloc wacom descriptor\n");
567 hid_set_drvdata(hdev
, wdata
);
569 /* Parse the HID report now */
570 ret
= hid_parse(hdev
);
572 hid_err(hdev
, "parse failed\n");
576 ret
= hid_hw_start(hdev
, HID_CONNECT_DEFAULT
);
578 hid_err(hdev
, "hw start failed\n");
582 ret
= device_create_file(&hdev
->dev
, &dev_attr_speed
);
585 "can't create sysfs speed attribute err: %d\n", ret
);
587 switch (hdev
->product
) {
588 case USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH
:
589 /* Set Wacom mode 2 with high reporting speed */
592 case USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH
:
593 sprintf(hdev
->name
, "%s", "Wacom Intuos4 WL");
595 wacom_set_features(hdev
);
599 #ifdef CONFIG_HID_WACOM_POWER_SUPPLY
600 wdata
->battery
.properties
= wacom_battery_props
;
601 wdata
->battery
.num_properties
= ARRAY_SIZE(wacom_battery_props
);
602 wdata
->battery
.get_property
= wacom_battery_get_property
;
603 wdata
->battery
.name
= "wacom_battery";
604 wdata
->battery
.type
= POWER_SUPPLY_TYPE_BATTERY
;
605 wdata
->battery
.use_for_apm
= 0;
608 ret
= power_supply_register(&hdev
->dev
, &wdata
->battery
);
610 hid_warn(hdev
, "can't create sysfs battery attribute, err: %d\n",
615 power_supply_powers(&wdata
->battery
, &hdev
->dev
);
617 wdata
->ac
.properties
= wacom_ac_props
;
618 wdata
->ac
.num_properties
= ARRAY_SIZE(wacom_ac_props
);
619 wdata
->ac
.get_property
= wacom_ac_get_property
;
620 wdata
->ac
.name
= "wacom_ac";
621 wdata
->ac
.type
= POWER_SUPPLY_TYPE_MAINS
;
622 wdata
->ac
.use_for_apm
= 0;
624 ret
= power_supply_register(&hdev
->dev
, &wdata
->ac
);
627 "can't create ac battery attribute, err: %d\n", ret
);
631 power_supply_powers(&wdata
->ac
, &hdev
->dev
);
635 #ifdef CONFIG_HID_WACOM_POWER_SUPPLY
637 power_supply_unregister(&wdata
->battery
);
639 device_remove_file(&hdev
->dev
, &dev_attr_speed
);
647 static void wacom_remove(struct hid_device
*hdev
)
649 #ifdef CONFIG_HID_WACOM_POWER_SUPPLY
650 struct wacom_data
*wdata
= hid_get_drvdata(hdev
);
652 device_remove_file(&hdev
->dev
, &dev_attr_speed
);
655 #ifdef CONFIG_HID_WACOM_POWER_SUPPLY
656 power_supply_unregister(&wdata
->battery
);
657 power_supply_unregister(&wdata
->ac
);
659 kfree(hid_get_drvdata(hdev
));
662 static const struct hid_device_id wacom_devices
[] = {
663 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM
, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH
) },
664 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM
, USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH
) },
668 MODULE_DEVICE_TABLE(hid
, wacom_devices
);
670 static struct hid_driver wacom_driver
= {
672 .id_table
= wacom_devices
,
673 .probe
= wacom_probe
,
674 .remove
= wacom_remove
,
675 .raw_event
= wacom_raw_event
,
676 .input_mapped
= wacom_input_mapped
,
679 static int __init
wacom_init(void)
683 ret
= hid_register_driver(&wacom_driver
);
685 pr_err("can't register wacom driver\n");
689 static void __exit
wacom_exit(void)
691 hid_unregister_driver(&wacom_driver
);
694 module_init(wacom_init
);
695 module_exit(wacom_exit
);
696 MODULE_LICENSE("GPL");