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"
17 /* defines to get HID report descriptor */
18 #define HID_DEVICET_HID (USB_TYPE_CLASS | 0x01)
19 #define HID_DEVICET_REPORT (USB_TYPE_CLASS | 0x02)
20 #define HID_USAGE_UNDEFINED 0x00
21 #define HID_USAGE_PAGE 0x05
22 #define HID_USAGE_PAGE_DIGITIZER 0x0d
23 #define HID_USAGE_PAGE_DESKTOP 0x01
24 #define HID_USAGE 0x09
25 #define HID_USAGE_X 0x30
26 #define HID_USAGE_Y 0x31
27 #define HID_USAGE_X_TILT 0x3d
28 #define HID_USAGE_Y_TILT 0x3e
29 #define HID_USAGE_FINGER 0x22
30 #define HID_USAGE_STYLUS 0x20
31 #define HID_USAGE_CONTACTMAX 0x55
32 #define HID_COLLECTION 0xa1
33 #define HID_COLLECTION_LOGICAL 0x02
34 #define HID_COLLECTION_END 0xc0
42 struct hid_descriptor
{
43 struct usb_descriptor_header header
;
48 __le16 wDescriptorLength
;
49 } __attribute__ ((packed
));
51 /* defines to get/set USB message */
52 #define USB_REQ_GET_REPORT 0x01
53 #define USB_REQ_SET_REPORT 0x09
55 #define WAC_HID_FEATURE_REPORT 0x03
56 #define WAC_MSG_RETRIES 5
58 #define WAC_CMD_LED_CONTROL 0x20
59 #define WAC_CMD_ICON_START 0x21
60 #define WAC_CMD_ICON_XFER 0x23
61 #define WAC_CMD_RETRIES 10
63 static int wacom_get_report(struct usb_interface
*intf
, u8 type
, u8 id
,
64 void *buf
, size_t size
, unsigned int retries
)
66 struct usb_device
*dev
= interface_to_usbdev(intf
);
70 retval
= usb_control_msg(dev
, usb_rcvctrlpipe(dev
, 0),
72 USB_DIR_IN
| USB_TYPE_CLASS
|
75 intf
->altsetting
[0].desc
.bInterfaceNumber
,
77 } while ((retval
== -ETIMEDOUT
|| retval
== -EPIPE
) && --retries
);
82 static int wacom_set_report(struct usb_interface
*intf
, u8 type
, u8 id
,
83 void *buf
, size_t size
, unsigned int retries
)
85 struct usb_device
*dev
= interface_to_usbdev(intf
);
89 retval
= usb_control_msg(dev
, usb_sndctrlpipe(dev
, 0),
91 USB_TYPE_CLASS
| USB_RECIP_INTERFACE
,
93 intf
->altsetting
[0].desc
.bInterfaceNumber
,
95 } while ((retval
== -ETIMEDOUT
|| retval
== -EPIPE
) && --retries
);
100 static void wacom_sys_irq(struct urb
*urb
)
102 struct wacom
*wacom
= urb
->context
;
103 struct device
*dev
= &wacom
->intf
->dev
;
106 switch (urb
->status
) {
113 /* this urb is terminated, clean up */
114 dev_dbg(dev
, "%s - urb shutting down with status: %d\n",
115 __func__
, urb
->status
);
118 dev_dbg(dev
, "%s - nonzero urb status received: %d\n",
119 __func__
, urb
->status
);
123 wacom_wac_irq(&wacom
->wacom_wac
, urb
->actual_length
);
126 usb_mark_last_busy(wacom
->usbdev
);
127 retval
= usb_submit_urb(urb
, GFP_ATOMIC
);
129 dev_err(dev
, "%s - usb_submit_urb failed with result %d\n",
133 static int wacom_open(struct input_dev
*dev
)
135 struct wacom
*wacom
= input_get_drvdata(dev
);
138 if (usb_autopm_get_interface(wacom
->intf
) < 0)
141 mutex_lock(&wacom
->lock
);
143 if (usb_submit_urb(wacom
->irq
, GFP_KERNEL
)) {
149 wacom
->intf
->needs_remote_wakeup
= 1;
152 mutex_unlock(&wacom
->lock
);
153 usb_autopm_put_interface(wacom
->intf
);
157 static void wacom_close(struct input_dev
*dev
)
159 struct wacom
*wacom
= input_get_drvdata(dev
);
162 autopm_error
= usb_autopm_get_interface(wacom
->intf
);
164 mutex_lock(&wacom
->lock
);
165 usb_kill_urb(wacom
->irq
);
167 wacom
->intf
->needs_remote_wakeup
= 0;
168 mutex_unlock(&wacom
->lock
);
171 usb_autopm_put_interface(wacom
->intf
);
175 * Calculate the resolution of the X or Y axis, given appropriate HID data.
176 * This function is little more than hidinput_calc_abs_res stripped down.
178 static int wacom_calc_hid_res(int logical_extents
, int physical_extents
,
179 unsigned char unit
, unsigned char exponent
)
181 int prev
, unit_exponent
;
183 /* Check if the extents are sane */
184 if (logical_extents
<= 0 || physical_extents
<= 0)
187 /* Get signed value of nybble-sized twos-compliment exponent */
188 unit_exponent
= exponent
;
189 if (unit_exponent
> 7)
192 /* Convert physical_extents to millimeters */
193 if (unit
== 0x11) { /* If centimeters */
195 } else if (unit
== 0x13) { /* If inches */
196 prev
= physical_extents
;
197 physical_extents
*= 254;
198 if (physical_extents
< prev
)
205 /* Apply negative unit exponent */
206 for (; unit_exponent
< 0; unit_exponent
++) {
207 prev
= logical_extents
;
208 logical_extents
*= 10;
209 if (logical_extents
< prev
)
212 /* Apply positive unit exponent */
213 for (; unit_exponent
> 0; unit_exponent
--) {
214 prev
= physical_extents
;
215 physical_extents
*= 10;
216 if (physical_extents
< prev
)
220 /* Calculate resolution */
221 return logical_extents
/ physical_extents
;
225 * The physical dimension specified by the HID descriptor is likely not in
226 * the "100th of a mm" units expected by wacom_calculate_touch_res. This
227 * function adjusts the value of [xy]_phy based on the unit and exponent
228 * provided by the HID descriptor. If an error occurs durring conversion
229 * (e.g. from the unit being left unspecified) [xy]_phy is not modified.
231 static void wacom_fix_phy_from_hid(struct wacom_features
*features
)
233 int xres
= wacom_calc_hid_res(features
->x_max
, features
->x_phy
,
234 features
->unit
, features
->unitExpo
);
235 int yres
= wacom_calc_hid_res(features
->y_max
, features
->y_phy
,
236 features
->unit
, features
->unitExpo
);
238 if (xres
> 0 && yres
> 0) {
239 features
->x_phy
= (100 * features
->x_max
) / xres
;
240 features
->y_phy
= (100 * features
->y_max
) / yres
;
245 * Static values for max X/Y and resolution of Pen interface is stored in
246 * features. This mean physical size of active area can be computed.
247 * This is useful to do when Pen and Touch have same active area of tablet.
248 * This means for Touch device, we only need to find max X/Y value and we
249 * have enough information to compute resolution of touch.
251 static void wacom_set_phy_from_res(struct wacom_features
*features
)
253 features
->x_phy
= (features
->x_max
* 100) / features
->x_resolution
;
254 features
->y_phy
= (features
->y_max
* 100) / features
->y_resolution
;
257 static int wacom_parse_logical_collection(unsigned char *report
,
258 struct wacom_features
*features
)
262 if (features
->type
== BAMBOO_PT
) {
264 /* Logical collection is only used by 3rd gen Bamboo Touch */
265 features
->pktlen
= WACOM_PKGLEN_BBTOUCH3
;
266 features
->device_type
= BTN_TOOL_FINGER
;
268 wacom_set_phy_from_res(features
);
270 features
->x_max
= features
->y_max
=
271 get_unaligned_le16(&report
[10]);
278 static void wacom_retrieve_report_data(struct usb_interface
*intf
,
279 struct wacom_features
*features
)
282 unsigned char *rep_data
;
284 rep_data
= kmalloc(2, GFP_KERNEL
);
288 result
= wacom_get_report(intf
, WAC_HID_FEATURE_REPORT
,
289 rep_data
[0], rep_data
, 2,
292 if (result
>= 0 && rep_data
[1] > 2)
293 features
->touch_max
= rep_data
[1];
300 * Interface Descriptor of wacom devices can be incomplete and
301 * inconsistent so wacom_features table is used to store stylus
302 * device's packet lengths, various maximum values, and tablet
303 * resolution based on product ID's.
305 * For devices that contain 2 interfaces, wacom_features table is
306 * inaccurate for the touch interface. Since the Interface Descriptor
307 * for touch interfaces has pretty complete data, this function exists
308 * to query tablet for this missing information instead of hard coding in
309 * an additional table.
311 * A typical Interface Descriptor for a stylus will contain a
312 * boot mouse application collection that is not of interest and this
313 * function will ignore it.
315 * It also contains a digitizer application collection that also is not
316 * of interest since any information it contains would be duplicate
317 * of what is in wacom_features. Usually it defines a report of an array
318 * of bytes that could be used as max length of the stylus packet returned.
319 * If it happens to define a Digitizer-Stylus Physical Collection then
320 * the X and Y logical values contain valid data but it is ignored.
322 * A typical Interface Descriptor for a touch interface will contain a
323 * Digitizer-Finger Physical Collection which will define both logical
324 * X/Y maximum as well as the physical size of tablet. Since touch
325 * interfaces haven't supported pressure or distance, this is enough
326 * information to override invalid values in the wacom_features table.
328 * 3rd gen Bamboo Touch no longer define a Digitizer-Finger Pysical
329 * Collection. Instead they define a Logical Collection with a single
330 * Logical Maximum for both X and Y.
332 * Intuos5 touch interface does not contain useful data. We deal with
333 * this after returning from this function.
335 static int wacom_parse_hid(struct usb_interface
*intf
,
336 struct hid_descriptor
*hid_desc
,
337 struct wacom_features
*features
)
339 struct usb_device
*dev
= interface_to_usbdev(intf
);
341 /* result has to be defined as int for some devices */
342 int result
= 0, touch_max
= 0;
343 int i
= 0, usage
= WCM_UNDEFINED
, finger
= 0, pen
= 0;
344 unsigned char *report
;
346 report
= kzalloc(hid_desc
->wDescriptorLength
, GFP_KERNEL
);
350 /* retrive report descriptors */
352 result
= usb_control_msg(dev
, usb_rcvctrlpipe(dev
, 0),
353 USB_REQ_GET_DESCRIPTOR
,
354 USB_RECIP_INTERFACE
| USB_DIR_IN
,
355 HID_DEVICET_REPORT
<< 8,
356 intf
->altsetting
[0].desc
.bInterfaceNumber
, /* interface */
358 hid_desc
->wDescriptorLength
,
360 } while (result
< 0 && limit
++ < WAC_MSG_RETRIES
);
362 /* No need to parse the Descriptor. It isn't an error though */
366 for (i
= 0; i
< hid_desc
->wDescriptorLength
; i
++) {
370 switch (report
[i
+ 1]) {
371 case HID_USAGE_PAGE_DIGITIZER
:
372 usage
= WCM_DIGITIZER
;
376 case HID_USAGE_PAGE_DESKTOP
:
384 switch (report
[i
+ 1]) {
386 if (usage
== WCM_DESKTOP
) {
388 features
->device_type
= BTN_TOOL_FINGER
;
389 /* touch device at least supports one touch point */
391 switch (features
->type
) {
393 features
->pktlen
= WACOM_PKGLEN_TPC2FG
;
398 features
->pktlen
= WACOM_PKGLEN_MTOUCH
;
402 features
->pktlen
= WACOM_PKGLEN_MTTPC
;
406 features
->pktlen
= WACOM_PKGLEN_BBTOUCH
;
410 features
->pktlen
= WACOM_PKGLEN_GRAPHIRE
;
414 switch (features
->type
) {
417 get_unaligned_le16(&report
[i
+ 5]);
419 get_unaligned_le16(&report
[i
+ 8]);
425 get_unaligned_le16(&report
[i
+ 3]);
427 get_unaligned_le16(&report
[i
+ 8]);
428 features
->unit
= report
[i
- 1];
429 features
->unitExpo
= report
[i
- 3];
435 get_unaligned_le16(&report
[i
+ 3]);
437 get_unaligned_le16(&report
[i
+ 6]);
438 features
->unit
= report
[i
+ 9];
439 features
->unitExpo
= report
[i
+ 11];
444 /* penabled only accepts exact bytes of data */
445 if (features
->type
>= TABLETPC
)
446 features
->pktlen
= WACOM_PKGLEN_GRAPHIRE
;
447 features
->device_type
= BTN_TOOL_PEN
;
449 get_unaligned_le16(&report
[i
+ 3]);
456 if (usage
== WCM_DESKTOP
) {
458 switch (features
->type
) {
463 get_unaligned_le16(&report
[i
+ 3]);
465 get_unaligned_le16(&report
[i
+ 6]);
471 get_unaligned_le16(&report
[i
+ 3]);
473 get_unaligned_le16(&report
[i
- 2]);
479 get_unaligned_le16(&report
[i
+ 3]);
481 get_unaligned_le16(&report
[i
+ 6]);
489 get_unaligned_le16(&report
[i
+ 3]);
495 get_unaligned_le16(&report
[i
+ 3]);
501 case HID_USAGE_FINGER
:
507 * Requiring Stylus Usage will ignore boot mouse
508 * X/Y values and some cases of invalid Digitizer X/Y
509 * values commonly reported.
511 case HID_USAGE_STYLUS
:
516 case HID_USAGE_CONTACTMAX
:
517 /* leave touch_max as is if predefined */
518 if (!features
->touch_max
)
519 wacom_retrieve_report_data(intf
, features
);
525 case HID_COLLECTION_END
:
526 /* reset UsagePage and Finger */
533 case HID_COLLECTION_LOGICAL
:
534 i
+= wacom_parse_logical_collection(&report
[i
],
543 if (!features
->touch_max
&& touch_max
)
544 features
->touch_max
= touch_max
;
550 static int wacom_set_device_mode(struct usb_interface
*intf
, int report_id
, int length
, int mode
)
552 unsigned char *rep_data
;
553 int error
= -ENOMEM
, limit
= 0;
555 rep_data
= kzalloc(length
, GFP_KERNEL
);
560 rep_data
[0] = report_id
;
563 error
= wacom_set_report(intf
, WAC_HID_FEATURE_REPORT
,
564 report_id
, rep_data
, length
, 1);
566 error
= wacom_get_report(intf
, WAC_HID_FEATURE_REPORT
,
567 report_id
, rep_data
, length
, 1);
568 } while ((error
< 0 || rep_data
[1] != mode
) && limit
++ < WAC_MSG_RETRIES
);
572 return error
< 0 ? error
: 0;
576 * Switch the tablet into its most-capable mode. Wacom tablets are
577 * typically configured to power-up in a mode which sends mouse-like
578 * reports to the OS. To get absolute position, pressure data, etc.
579 * from the tablet, it is necessary to switch the tablet out of this
580 * mode and into one which sends the full range of tablet data.
582 static int wacom_query_tablet_data(struct usb_interface
*intf
, struct wacom_features
*features
)
584 if (features
->device_type
== BTN_TOOL_FINGER
) {
585 if (features
->type
> TABLETPC
) {
586 /* MT Tablet PC touch */
587 return wacom_set_device_mode(intf
, 3, 4, 4);
589 else if (features
->type
== WACOM_24HDT
) {
590 return wacom_set_device_mode(intf
, 18, 3, 2);
592 } else if (features
->device_type
== BTN_TOOL_PEN
) {
593 if (features
->type
<= BAMBOO_PT
&& features
->type
!= WIRELESS
) {
594 return wacom_set_device_mode(intf
, 2, 2, 2);
601 static int wacom_retrieve_hid_descriptor(struct usb_interface
*intf
,
602 struct wacom_features
*features
)
605 struct usb_host_interface
*interface
= intf
->cur_altsetting
;
606 struct hid_descriptor
*hid_desc
;
608 /* default features */
609 features
->device_type
= BTN_TOOL_PEN
;
610 features
->x_fuzz
= 4;
611 features
->y_fuzz
= 4;
612 features
->pressure_fuzz
= 0;
613 features
->distance_fuzz
= 0;
616 * The wireless device HID is basic and layout conflicts with
617 * other tablets (monitor and touch interface can look like pen).
618 * Skip the query for this type and modify defaults based on
621 if (features
->type
== WIRELESS
) {
622 if (intf
->cur_altsetting
->desc
.bInterfaceNumber
== 0) {
623 features
->device_type
= 0;
624 } else if (intf
->cur_altsetting
->desc
.bInterfaceNumber
== 2) {
625 features
->device_type
= BTN_TOOL_FINGER
;
626 features
->pktlen
= WACOM_PKGLEN_BBTOUCH3
;
630 /* only devices that support touch need to retrieve the info */
631 if (features
->type
< BAMBOO_PT
) {
635 error
= usb_get_extra_descriptor(interface
, HID_DEVICET_HID
, &hid_desc
);
637 error
= usb_get_extra_descriptor(&interface
->endpoint
[0],
638 HID_DEVICET_REPORT
, &hid_desc
);
641 "can not retrieve extra class descriptor\n");
645 error
= wacom_parse_hid(intf
, hid_desc
, features
);
648 wacom_fix_phy_from_hid(features
);
654 struct wacom_usbdev_data
{
655 struct list_head list
;
657 struct usb_device
*dev
;
658 struct wacom_shared shared
;
661 static LIST_HEAD(wacom_udev_list
);
662 static DEFINE_MUTEX(wacom_udev_list_lock
);
664 static struct usb_device
*wacom_get_sibling(struct usb_device
*dev
, int vendor
, int product
)
667 struct usb_device
*sibling
;
669 if (vendor
== 0 && product
== 0)
672 if (dev
->parent
== NULL
)
675 usb_hub_for_each_child(dev
->parent
, port1
, sibling
) {
676 struct usb_device_descriptor
*d
;
680 d
= &sibling
->descriptor
;
681 if (d
->idVendor
== vendor
&& d
->idProduct
== product
)
688 static struct wacom_usbdev_data
*wacom_get_usbdev_data(struct usb_device
*dev
)
690 struct wacom_usbdev_data
*data
;
692 list_for_each_entry(data
, &wacom_udev_list
, list
) {
693 if (data
->dev
== dev
) {
694 kref_get(&data
->kref
);
702 static int wacom_add_shared_data(struct wacom_wac
*wacom
,
703 struct usb_device
*dev
)
705 struct wacom_usbdev_data
*data
;
708 mutex_lock(&wacom_udev_list_lock
);
710 data
= wacom_get_usbdev_data(dev
);
712 data
= kzalloc(sizeof(struct wacom_usbdev_data
), GFP_KERNEL
);
718 kref_init(&data
->kref
);
720 list_add_tail(&data
->list
, &wacom_udev_list
);
723 wacom
->shared
= &data
->shared
;
726 mutex_unlock(&wacom_udev_list_lock
);
730 static void wacom_release_shared_data(struct kref
*kref
)
732 struct wacom_usbdev_data
*data
=
733 container_of(kref
, struct wacom_usbdev_data
, kref
);
735 mutex_lock(&wacom_udev_list_lock
);
736 list_del(&data
->list
);
737 mutex_unlock(&wacom_udev_list_lock
);
742 static void wacom_remove_shared_data(struct wacom_wac
*wacom
)
744 struct wacom_usbdev_data
*data
;
747 data
= container_of(wacom
->shared
, struct wacom_usbdev_data
, shared
);
748 kref_put(&data
->kref
, wacom_release_shared_data
);
749 wacom
->shared
= NULL
;
753 static int wacom_led_control(struct wacom
*wacom
)
758 buf
= kzalloc(9, GFP_KERNEL
);
762 if (wacom
->wacom_wac
.features
.type
>= INTUOS5S
&&
763 wacom
->wacom_wac
.features
.type
<= INTUOS5L
) {
765 * Touch Ring and crop mark LED luminance may take on
766 * one of four values:
767 * 0 = Low; 1 = Medium; 2 = High; 3 = Off
769 int ring_led
= wacom
->led
.select
[0] & 0x03;
770 int ring_lum
= (((wacom
->led
.llv
& 0x60) >> 5) - 1) & 0x03;
773 buf
[0] = WAC_CMD_LED_CONTROL
;
774 buf
[1] = (crop_lum
<< 4) | (ring_lum
<< 2) | (ring_led
);
777 int led
= wacom
->led
.select
[0] | 0x4;
779 if (wacom
->wacom_wac
.features
.type
== WACOM_21UX2
||
780 wacom
->wacom_wac
.features
.type
== WACOM_24HD
)
781 led
|= (wacom
->led
.select
[1] << 4) | 0x40;
783 buf
[0] = WAC_CMD_LED_CONTROL
;
785 buf
[2] = wacom
->led
.llv
;
786 buf
[3] = wacom
->led
.hlv
;
787 buf
[4] = wacom
->led
.img_lum
;
790 retval
= wacom_set_report(wacom
->intf
, 0x03, WAC_CMD_LED_CONTROL
,
791 buf
, 9, WAC_CMD_RETRIES
);
797 static int wacom_led_putimage(struct wacom
*wacom
, int button_id
, const void *img
)
802 buf
= kzalloc(259, GFP_KERNEL
);
806 /* Send 'start' command */
807 buf
[0] = WAC_CMD_ICON_START
;
809 retval
= wacom_set_report(wacom
->intf
, 0x03, WAC_CMD_ICON_START
,
810 buf
, 2, WAC_CMD_RETRIES
);
814 buf
[0] = WAC_CMD_ICON_XFER
;
815 buf
[1] = button_id
& 0x07;
816 for (i
= 0; i
< 4; i
++) {
818 memcpy(buf
+ 3, img
+ i
* 256, 256);
820 retval
= wacom_set_report(wacom
->intf
, 0x03, WAC_CMD_ICON_XFER
,
821 buf
, 259, WAC_CMD_RETRIES
);
827 buf
[0] = WAC_CMD_ICON_START
;
829 wacom_set_report(wacom
->intf
, 0x03, WAC_CMD_ICON_START
,
830 buf
, 2, WAC_CMD_RETRIES
);
837 static ssize_t
wacom_led_select_store(struct device
*dev
, int set_id
,
838 const char *buf
, size_t count
)
840 struct wacom
*wacom
= dev_get_drvdata(dev
);
844 err
= kstrtouint(buf
, 10, &id
);
848 mutex_lock(&wacom
->lock
);
850 wacom
->led
.select
[set_id
] = id
& 0x3;
851 err
= wacom_led_control(wacom
);
853 mutex_unlock(&wacom
->lock
);
855 return err
< 0 ? err
: count
;
858 #define DEVICE_LED_SELECT_ATTR(SET_ID) \
859 static ssize_t wacom_led##SET_ID##_select_store(struct device *dev, \
860 struct device_attribute *attr, const char *buf, size_t count) \
862 return wacom_led_select_store(dev, SET_ID, buf, count); \
864 static ssize_t wacom_led##SET_ID##_select_show(struct device *dev, \
865 struct device_attribute *attr, char *buf) \
867 struct wacom *wacom = dev_get_drvdata(dev); \
868 return snprintf(buf, 2, "%d\n", wacom->led.select[SET_ID]); \
870 static DEVICE_ATTR(status_led##SET_ID##_select, S_IWUSR | S_IRUSR, \
871 wacom_led##SET_ID##_select_show, \
872 wacom_led##SET_ID##_select_store)
874 DEVICE_LED_SELECT_ATTR(0);
875 DEVICE_LED_SELECT_ATTR(1);
877 static ssize_t
wacom_luminance_store(struct wacom
*wacom
, u8
*dest
,
878 const char *buf
, size_t count
)
883 err
= kstrtouint(buf
, 10, &value
);
887 mutex_lock(&wacom
->lock
);
889 *dest
= value
& 0x7f;
890 err
= wacom_led_control(wacom
);
892 mutex_unlock(&wacom
->lock
);
894 return err
< 0 ? err
: count
;
897 #define DEVICE_LUMINANCE_ATTR(name, field) \
898 static ssize_t wacom_##name##_luminance_store(struct device *dev, \
899 struct device_attribute *attr, const char *buf, size_t count) \
901 struct wacom *wacom = dev_get_drvdata(dev); \
903 return wacom_luminance_store(wacom, &wacom->led.field, \
906 static DEVICE_ATTR(name##_luminance, S_IWUSR, \
907 NULL, wacom_##name##_luminance_store)
909 DEVICE_LUMINANCE_ATTR(status0
, llv
);
910 DEVICE_LUMINANCE_ATTR(status1
, hlv
);
911 DEVICE_LUMINANCE_ATTR(buttons
, img_lum
);
913 static ssize_t
wacom_button_image_store(struct device
*dev
, int button_id
,
914 const char *buf
, size_t count
)
916 struct wacom
*wacom
= dev_get_drvdata(dev
);
922 mutex_lock(&wacom
->lock
);
924 err
= wacom_led_putimage(wacom
, button_id
, buf
);
926 mutex_unlock(&wacom
->lock
);
928 return err
< 0 ? err
: count
;
931 #define DEVICE_BTNIMG_ATTR(BUTTON_ID) \
932 static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev, \
933 struct device_attribute *attr, const char *buf, size_t count) \
935 return wacom_button_image_store(dev, BUTTON_ID, buf, count); \
937 static DEVICE_ATTR(button##BUTTON_ID##_rawimg, S_IWUSR, \
938 NULL, wacom_btnimg##BUTTON_ID##_store)
940 DEVICE_BTNIMG_ATTR(0);
941 DEVICE_BTNIMG_ATTR(1);
942 DEVICE_BTNIMG_ATTR(2);
943 DEVICE_BTNIMG_ATTR(3);
944 DEVICE_BTNIMG_ATTR(4);
945 DEVICE_BTNIMG_ATTR(5);
946 DEVICE_BTNIMG_ATTR(6);
947 DEVICE_BTNIMG_ATTR(7);
949 static struct attribute
*cintiq_led_attrs
[] = {
950 &dev_attr_status_led0_select
.attr
,
951 &dev_attr_status_led1_select
.attr
,
955 static struct attribute_group cintiq_led_attr_group
= {
957 .attrs
= cintiq_led_attrs
,
960 static struct attribute
*intuos4_led_attrs
[] = {
961 &dev_attr_status0_luminance
.attr
,
962 &dev_attr_status1_luminance
.attr
,
963 &dev_attr_status_led0_select
.attr
,
964 &dev_attr_buttons_luminance
.attr
,
965 &dev_attr_button0_rawimg
.attr
,
966 &dev_attr_button1_rawimg
.attr
,
967 &dev_attr_button2_rawimg
.attr
,
968 &dev_attr_button3_rawimg
.attr
,
969 &dev_attr_button4_rawimg
.attr
,
970 &dev_attr_button5_rawimg
.attr
,
971 &dev_attr_button6_rawimg
.attr
,
972 &dev_attr_button7_rawimg
.attr
,
976 static struct attribute_group intuos4_led_attr_group
= {
978 .attrs
= intuos4_led_attrs
,
981 static struct attribute
*intuos5_led_attrs
[] = {
982 &dev_attr_status0_luminance
.attr
,
983 &dev_attr_status_led0_select
.attr
,
987 static struct attribute_group intuos5_led_attr_group
= {
989 .attrs
= intuos5_led_attrs
,
992 static int wacom_initialize_leds(struct wacom
*wacom
)
996 /* Initialize default values */
997 switch (wacom
->wacom_wac
.features
.type
) {
1001 wacom
->led
.select
[0] = 0;
1002 wacom
->led
.select
[1] = 0;
1003 wacom
->led
.llv
= 10;
1004 wacom
->led
.hlv
= 20;
1005 wacom
->led
.img_lum
= 10;
1006 error
= sysfs_create_group(&wacom
->intf
->dev
.kobj
,
1007 &intuos4_led_attr_group
);
1012 wacom
->led
.select
[0] = 0;
1013 wacom
->led
.select
[1] = 0;
1016 wacom
->led
.img_lum
= 0;
1018 error
= sysfs_create_group(&wacom
->intf
->dev
.kobj
,
1019 &cintiq_led_attr_group
);
1025 wacom
->led
.select
[0] = 0;
1026 wacom
->led
.select
[1] = 0;
1027 wacom
->led
.llv
= 32;
1029 wacom
->led
.img_lum
= 0;
1031 error
= sysfs_create_group(&wacom
->intf
->dev
.kobj
,
1032 &intuos5_led_attr_group
);
1040 dev_err(&wacom
->intf
->dev
,
1041 "cannot create sysfs group err: %d\n", error
);
1044 wacom_led_control(wacom
);
1049 static void wacom_destroy_leds(struct wacom
*wacom
)
1051 switch (wacom
->wacom_wac
.features
.type
) {
1055 sysfs_remove_group(&wacom
->intf
->dev
.kobj
,
1056 &intuos4_led_attr_group
);
1061 sysfs_remove_group(&wacom
->intf
->dev
.kobj
,
1062 &cintiq_led_attr_group
);
1068 sysfs_remove_group(&wacom
->intf
->dev
.kobj
,
1069 &intuos5_led_attr_group
);
1074 static enum power_supply_property wacom_battery_props
[] = {
1075 POWER_SUPPLY_PROP_CAPACITY
1078 static int wacom_battery_get_property(struct power_supply
*psy
,
1079 enum power_supply_property psp
,
1080 union power_supply_propval
*val
)
1082 struct wacom
*wacom
= container_of(psy
, struct wacom
, battery
);
1086 case POWER_SUPPLY_PROP_CAPACITY
:
1088 wacom
->wacom_wac
.battery_capacity
* 100 / 31;
1098 static int wacom_initialize_battery(struct wacom
*wacom
)
1102 if (wacom
->wacom_wac
.features
.quirks
& WACOM_QUIRK_MONITOR
) {
1103 wacom
->battery
.properties
= wacom_battery_props
;
1104 wacom
->battery
.num_properties
= ARRAY_SIZE(wacom_battery_props
);
1105 wacom
->battery
.get_property
= wacom_battery_get_property
;
1106 wacom
->battery
.name
= "wacom_battery";
1107 wacom
->battery
.type
= POWER_SUPPLY_TYPE_BATTERY
;
1108 wacom
->battery
.use_for_apm
= 0;
1110 error
= power_supply_register(&wacom
->usbdev
->dev
,
1114 power_supply_powers(&wacom
->battery
,
1115 &wacom
->usbdev
->dev
);
1121 static void wacom_destroy_battery(struct wacom
*wacom
)
1123 if (wacom
->wacom_wac
.features
.quirks
& WACOM_QUIRK_MONITOR
&&
1124 wacom
->battery
.dev
) {
1125 power_supply_unregister(&wacom
->battery
);
1126 wacom
->battery
.dev
= NULL
;
1130 static int wacom_register_input(struct wacom
*wacom
)
1132 struct input_dev
*input_dev
;
1133 struct usb_interface
*intf
= wacom
->intf
;
1134 struct usb_device
*dev
= interface_to_usbdev(intf
);
1135 struct wacom_wac
*wacom_wac
= &(wacom
->wacom_wac
);
1138 input_dev
= input_allocate_device();
1144 input_dev
->name
= wacom_wac
->name
;
1145 input_dev
->dev
.parent
= &intf
->dev
;
1146 input_dev
->open
= wacom_open
;
1147 input_dev
->close
= wacom_close
;
1148 usb_to_input_id(dev
, &input_dev
->id
);
1149 input_set_drvdata(input_dev
, wacom
);
1151 wacom_wac
->input
= input_dev
;
1152 error
= wacom_setup_input_capabilities(input_dev
, wacom_wac
);
1156 error
= input_register_device(input_dev
);
1163 input_free_device(input_dev
);
1164 wacom_wac
->input
= NULL
;
1169 static void wacom_wireless_work(struct work_struct
*work
)
1171 struct wacom
*wacom
= container_of(work
, struct wacom
, work
);
1172 struct usb_device
*usbdev
= wacom
->usbdev
;
1173 struct wacom_wac
*wacom_wac
= &wacom
->wacom_wac
;
1174 struct wacom
*wacom1
, *wacom2
;
1175 struct wacom_wac
*wacom_wac1
, *wacom_wac2
;
1179 * Regardless if this is a disconnect or a new tablet,
1180 * remove any existing input and battery devices.
1183 wacom_destroy_battery(wacom
);
1185 /* Stylus interface */
1186 wacom1
= usb_get_intfdata(usbdev
->config
->interface
[1]);
1187 wacom_wac1
= &(wacom1
->wacom_wac
);
1188 if (wacom_wac1
->input
)
1189 input_unregister_device(wacom_wac1
->input
);
1190 wacom_wac1
->input
= NULL
;
1192 /* Touch interface */
1193 wacom2
= usb_get_intfdata(usbdev
->config
->interface
[2]);
1194 wacom_wac2
= &(wacom2
->wacom_wac
);
1195 if (wacom_wac2
->input
)
1196 input_unregister_device(wacom_wac2
->input
);
1197 wacom_wac2
->input
= NULL
;
1199 if (wacom_wac
->pid
== 0) {
1200 dev_info(&wacom
->intf
->dev
, "wireless tablet disconnected\n");
1202 const struct usb_device_id
*id
= wacom_ids
;
1204 dev_info(&wacom
->intf
->dev
,
1205 "wireless tablet connected with PID %x\n",
1208 while (id
->match_flags
) {
1209 if (id
->idVendor
== USB_VENDOR_ID_WACOM
&&
1210 id
->idProduct
== wacom_wac
->pid
)
1215 if (!id
->match_flags
) {
1216 dev_info(&wacom
->intf
->dev
,
1217 "ignoring unknown PID.\n");
1221 /* Stylus interface */
1222 wacom_wac1
->features
=
1223 *((struct wacom_features
*)id
->driver_info
);
1224 wacom_wac1
->features
.device_type
= BTN_TOOL_PEN
;
1225 error
= wacom_register_input(wacom1
);
1229 /* Touch interface */
1230 wacom_wac2
->features
=
1231 *((struct wacom_features
*)id
->driver_info
);
1232 wacom_wac2
->features
.pktlen
= WACOM_PKGLEN_BBTOUCH3
;
1233 wacom_wac2
->features
.device_type
= BTN_TOOL_FINGER
;
1234 wacom_set_phy_from_res(&wacom_wac2
->features
);
1235 wacom_wac2
->features
.x_max
= wacom_wac2
->features
.y_max
= 4096;
1236 error
= wacom_register_input(wacom2
);
1240 error
= wacom_initialize_battery(wacom
);
1248 input_unregister_device(wacom_wac2
->input
);
1249 wacom_wac2
->input
= NULL
;
1251 input_unregister_device(wacom_wac1
->input
);
1252 wacom_wac1
->input
= NULL
;
1257 static int wacom_probe(struct usb_interface
*intf
, const struct usb_device_id
*id
)
1259 struct usb_device
*dev
= interface_to_usbdev(intf
);
1260 struct usb_endpoint_descriptor
*endpoint
;
1261 struct wacom
*wacom
;
1262 struct wacom_wac
*wacom_wac
;
1263 struct wacom_features
*features
;
1266 if (!id
->driver_info
)
1269 wacom
= kzalloc(sizeof(struct wacom
), GFP_KERNEL
);
1273 wacom_wac
= &wacom
->wacom_wac
;
1274 wacom_wac
->features
= *((struct wacom_features
*)id
->driver_info
);
1275 features
= &wacom_wac
->features
;
1276 if (features
->pktlen
> WACOM_PKGLEN_MAX
) {
1281 wacom_wac
->data
= usb_alloc_coherent(dev
, WACOM_PKGLEN_MAX
,
1282 GFP_KERNEL
, &wacom
->data_dma
);
1283 if (!wacom_wac
->data
) {
1288 wacom
->irq
= usb_alloc_urb(0, GFP_KERNEL
);
1294 wacom
->usbdev
= dev
;
1296 mutex_init(&wacom
->lock
);
1297 INIT_WORK(&wacom
->work
, wacom_wireless_work
);
1298 usb_make_path(dev
, wacom
->phys
, sizeof(wacom
->phys
));
1299 strlcat(wacom
->phys
, "/input0", sizeof(wacom
->phys
));
1301 endpoint
= &intf
->cur_altsetting
->endpoint
[0].desc
;
1303 /* Retrieve the physical and logical size for touch devices */
1304 error
= wacom_retrieve_hid_descriptor(intf
, features
);
1309 * Intuos5 has no useful data about its touch interface in its
1310 * HID descriptor. If this is the touch interface (wMaxPacketSize
1311 * of WACOM_PKGLEN_BBTOUCH3), override the table values.
1313 if (features
->type
>= INTUOS5S
&& features
->type
<= INTUOS5L
) {
1314 if (endpoint
->wMaxPacketSize
== WACOM_PKGLEN_BBTOUCH3
) {
1315 features
->device_type
= BTN_TOOL_FINGER
;
1316 features
->pktlen
= WACOM_PKGLEN_BBTOUCH3
;
1318 wacom_set_phy_from_res(features
);
1320 features
->x_max
= 4096;
1321 features
->y_max
= 4096;
1323 features
->device_type
= BTN_TOOL_PEN
;
1327 wacom_setup_device_quirks(features
);
1329 strlcpy(wacom_wac
->name
, features
->name
, sizeof(wacom_wac
->name
));
1331 if (features
->quirks
& WACOM_QUIRK_MULTI_INPUT
) {
1332 struct usb_device
*other_dev
;
1334 /* Append the device type to the name */
1335 strlcat(wacom_wac
->name
,
1336 features
->device_type
== BTN_TOOL_PEN
?
1338 sizeof(wacom_wac
->name
));
1341 other_dev
= wacom_get_sibling(dev
, features
->oVid
, features
->oPid
);
1342 if (other_dev
== NULL
|| wacom_get_usbdev_data(other_dev
) == NULL
)
1344 error
= wacom_add_shared_data(wacom_wac
, other_dev
);
1349 usb_fill_int_urb(wacom
->irq
, dev
,
1350 usb_rcvintpipe(dev
, endpoint
->bEndpointAddress
),
1351 wacom_wac
->data
, features
->pktlen
,
1352 wacom_sys_irq
, wacom
, endpoint
->bInterval
);
1353 wacom
->irq
->transfer_dma
= wacom
->data_dma
;
1354 wacom
->irq
->transfer_flags
|= URB_NO_TRANSFER_DMA_MAP
;
1356 error
= wacom_initialize_leds(wacom
);
1360 if (!(features
->quirks
& WACOM_QUIRK_NO_INPUT
)) {
1361 error
= wacom_register_input(wacom
);
1366 /* Note that if query fails it is not a hard failure */
1367 wacom_query_tablet_data(intf
, features
);
1369 usb_set_intfdata(intf
, wacom
);
1371 if (features
->quirks
& WACOM_QUIRK_MONITOR
) {
1372 if (usb_submit_urb(wacom
->irq
, GFP_KERNEL
))
1378 fail5
: wacom_destroy_leds(wacom
);
1379 fail4
: wacom_remove_shared_data(wacom_wac
);
1380 fail3
: usb_free_urb(wacom
->irq
);
1381 fail2
: usb_free_coherent(dev
, WACOM_PKGLEN_MAX
, wacom_wac
->data
, wacom
->data_dma
);
1382 fail1
: kfree(wacom
);
1386 static void wacom_disconnect(struct usb_interface
*intf
)
1388 struct wacom
*wacom
= usb_get_intfdata(intf
);
1390 usb_set_intfdata(intf
, NULL
);
1392 usb_kill_urb(wacom
->irq
);
1393 cancel_work_sync(&wacom
->work
);
1394 if (wacom
->wacom_wac
.input
)
1395 input_unregister_device(wacom
->wacom_wac
.input
);
1396 wacom_destroy_battery(wacom
);
1397 wacom_destroy_leds(wacom
);
1398 usb_free_urb(wacom
->irq
);
1399 usb_free_coherent(interface_to_usbdev(intf
), WACOM_PKGLEN_MAX
,
1400 wacom
->wacom_wac
.data
, wacom
->data_dma
);
1401 wacom_remove_shared_data(&wacom
->wacom_wac
);
1405 static int wacom_suspend(struct usb_interface
*intf
, pm_message_t message
)
1407 struct wacom
*wacom
= usb_get_intfdata(intf
);
1409 mutex_lock(&wacom
->lock
);
1410 usb_kill_urb(wacom
->irq
);
1411 mutex_unlock(&wacom
->lock
);
1416 static int wacom_resume(struct usb_interface
*intf
)
1418 struct wacom
*wacom
= usb_get_intfdata(intf
);
1419 struct wacom_features
*features
= &wacom
->wacom_wac
.features
;
1422 mutex_lock(&wacom
->lock
);
1424 /* switch to wacom mode first */
1425 wacom_query_tablet_data(intf
, features
);
1426 wacom_led_control(wacom
);
1428 if ((wacom
->open
|| features
->quirks
& WACOM_QUIRK_MONITOR
)
1429 && usb_submit_urb(wacom
->irq
, GFP_NOIO
) < 0)
1432 mutex_unlock(&wacom
->lock
);
1437 static int wacom_reset_resume(struct usb_interface
*intf
)
1439 return wacom_resume(intf
);
1442 static struct usb_driver wacom_driver
= {
1444 .id_table
= wacom_ids
,
1445 .probe
= wacom_probe
,
1446 .disconnect
= wacom_disconnect
,
1447 .suspend
= wacom_suspend
,
1448 .resume
= wacom_resume
,
1449 .reset_resume
= wacom_reset_resume
,
1450 .supports_autosuspend
= 1,
1453 module_usb_driver(wacom_driver
);