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_COLLECTION 0xc0
39 struct hid_descriptor
{
40 struct usb_descriptor_header header
;
45 __le16 wDescriptorLength
;
46 } __attribute__ ((packed
));
48 /* defines to get/set USB message */
49 #define USB_REQ_GET_REPORT 0x01
50 #define USB_REQ_SET_REPORT 0x09
52 #define WAC_HID_FEATURE_REPORT 0x03
53 #define WAC_MSG_RETRIES 5
55 #define WAC_CMD_LED_CONTROL 0x20
56 #define WAC_CMD_ICON_START 0x21
57 #define WAC_CMD_ICON_XFER 0x23
58 #define WAC_CMD_RETRIES 10
60 static int wacom_get_report(struct usb_interface
*intf
, u8 type
, u8 id
,
61 void *buf
, size_t size
, unsigned int retries
)
63 struct usb_device
*dev
= interface_to_usbdev(intf
);
67 retval
= usb_control_msg(dev
, usb_rcvctrlpipe(dev
, 0),
69 USB_TYPE_CLASS
| USB_RECIP_INTERFACE
,
71 intf
->altsetting
[0].desc
.bInterfaceNumber
,
73 } while ((retval
== -ETIMEDOUT
|| retval
== -EPIPE
) && --retries
);
78 static int wacom_set_report(struct usb_interface
*intf
, u8 type
, u8 id
,
79 void *buf
, size_t size
, unsigned int retries
)
81 struct usb_device
*dev
= interface_to_usbdev(intf
);
85 retval
= usb_control_msg(dev
, usb_sndctrlpipe(dev
, 0),
87 USB_TYPE_CLASS
| USB_RECIP_INTERFACE
,
89 intf
->altsetting
[0].desc
.bInterfaceNumber
,
91 } while ((retval
== -ETIMEDOUT
|| retval
== -EPIPE
) && --retries
);
96 static void wacom_sys_irq(struct urb
*urb
)
98 struct wacom
*wacom
= urb
->context
;
101 switch (urb
->status
) {
108 /* this urb is terminated, clean up */
109 dbg("%s - urb shutting down with status: %d", __func__
, urb
->status
);
112 dbg("%s - nonzero urb status received: %d", __func__
, urb
->status
);
116 wacom_wac_irq(&wacom
->wacom_wac
, urb
->actual_length
);
119 usb_mark_last_busy(wacom
->usbdev
);
120 retval
= usb_submit_urb(urb
, GFP_ATOMIC
);
122 err ("%s - usb_submit_urb failed with result %d",
126 static int wacom_open(struct input_dev
*dev
)
128 struct wacom
*wacom
= input_get_drvdata(dev
);
131 if (usb_autopm_get_interface(wacom
->intf
) < 0)
134 mutex_lock(&wacom
->lock
);
136 if (usb_submit_urb(wacom
->irq
, GFP_KERNEL
)) {
142 wacom
->intf
->needs_remote_wakeup
= 1;
145 mutex_unlock(&wacom
->lock
);
146 usb_autopm_put_interface(wacom
->intf
);
150 static void wacom_close(struct input_dev
*dev
)
152 struct wacom
*wacom
= input_get_drvdata(dev
);
155 autopm_error
= usb_autopm_get_interface(wacom
->intf
);
157 mutex_lock(&wacom
->lock
);
158 usb_kill_urb(wacom
->irq
);
160 wacom
->intf
->needs_remote_wakeup
= 0;
161 mutex_unlock(&wacom
->lock
);
164 usb_autopm_put_interface(wacom
->intf
);
167 static int wacom_parse_hid(struct usb_interface
*intf
, struct hid_descriptor
*hid_desc
,
168 struct wacom_features
*features
)
170 struct usb_device
*dev
= interface_to_usbdev(intf
);
172 /* result has to be defined as int for some devices */
174 int i
= 0, usage
= WCM_UNDEFINED
, finger
= 0, pen
= 0;
175 unsigned char *report
;
177 report
= kzalloc(hid_desc
->wDescriptorLength
, GFP_KERNEL
);
181 /* retrive report descriptors */
183 result
= usb_control_msg(dev
, usb_rcvctrlpipe(dev
, 0),
184 USB_REQ_GET_DESCRIPTOR
,
185 USB_RECIP_INTERFACE
| USB_DIR_IN
,
186 HID_DEVICET_REPORT
<< 8,
187 intf
->altsetting
[0].desc
.bInterfaceNumber
, /* interface */
189 hid_desc
->wDescriptorLength
,
191 } while (result
< 0 && limit
++ < WAC_MSG_RETRIES
);
193 /* No need to parse the Descriptor. It isn't an error though */
197 for (i
= 0; i
< hid_desc
->wDescriptorLength
; i
++) {
201 switch (report
[i
+ 1]) {
202 case HID_USAGE_PAGE_DIGITIZER
:
203 usage
= WCM_DIGITIZER
;
207 case HID_USAGE_PAGE_DESKTOP
:
215 switch (report
[i
+ 1]) {
217 if (usage
== WCM_DESKTOP
) {
219 features
->device_type
= BTN_TOOL_FINGER
;
220 if (features
->type
== TABLETPC2FG
) {
221 /* need to reset back */
222 features
->pktlen
= WACOM_PKGLEN_TPC2FG
;
223 features
->device_type
= BTN_TOOL_DOUBLETAP
;
225 if (features
->type
== BAMBOO_PT
) {
226 /* need to reset back */
227 features
->pktlen
= WACOM_PKGLEN_BBTOUCH
;
228 features
->device_type
= BTN_TOOL_DOUBLETAP
;
230 get_unaligned_le16(&report
[i
+ 5]);
232 get_unaligned_le16(&report
[i
+ 8]);
236 get_unaligned_le16(&report
[i
+ 3]);
238 get_unaligned_le16(&report
[i
+ 6]);
239 features
->unit
= report
[i
+ 9];
240 features
->unitExpo
= report
[i
+ 11];
244 /* penabled only accepts exact bytes of data */
245 if (features
->type
== TABLETPC2FG
)
246 features
->pktlen
= WACOM_PKGLEN_GRAPHIRE
;
247 if (features
->type
== BAMBOO_PT
)
248 features
->pktlen
= WACOM_PKGLEN_BBFUN
;
249 features
->device_type
= BTN_TOOL_PEN
;
251 get_unaligned_le16(&report
[i
+ 3]);
254 } else if (usage
== WCM_DIGITIZER
) {
255 /* max pressure isn't reported
256 features->pressure_max = (unsigned short)
257 (report[i+4] << 8 | report[i + 3]);
259 features
->pressure_max
= 255;
265 if (usage
== WCM_DESKTOP
) {
267 features
->device_type
= BTN_TOOL_FINGER
;
268 if (features
->type
== TABLETPC2FG
) {
269 /* need to reset back */
270 features
->pktlen
= WACOM_PKGLEN_TPC2FG
;
271 features
->device_type
= BTN_TOOL_DOUBLETAP
;
273 get_unaligned_le16(&report
[i
+ 3]);
275 get_unaligned_le16(&report
[i
+ 6]);
277 } else if (features
->type
== BAMBOO_PT
) {
278 /* need to reset back */
279 features
->pktlen
= WACOM_PKGLEN_BBTOUCH
;
280 features
->device_type
= BTN_TOOL_DOUBLETAP
;
282 get_unaligned_le16(&report
[i
+ 3]);
284 get_unaligned_le16(&report
[i
+ 6]);
290 get_unaligned_le16(&report
[i
+ 3]);
294 /* penabled only accepts exact bytes of data */
295 if (features
->type
== TABLETPC2FG
)
296 features
->pktlen
= WACOM_PKGLEN_GRAPHIRE
;
297 if (features
->type
== BAMBOO_PT
)
298 features
->pktlen
= WACOM_PKGLEN_BBFUN
;
299 features
->device_type
= BTN_TOOL_PEN
;
301 get_unaligned_le16(&report
[i
+ 3]);
307 case HID_USAGE_FINGER
:
312 case HID_USAGE_STYLUS
:
317 case HID_USAGE_UNDEFINED
:
318 if (usage
== WCM_DESKTOP
&& finger
) /* capacity */
319 features
->pressure_max
=
320 get_unaligned_le16(&report
[i
+ 3]);
327 /* reset UsagePage and Finger */
339 static int wacom_query_tablet_data(struct usb_interface
*intf
, struct wacom_features
*features
)
341 unsigned char *rep_data
;
342 int limit
= 0, report_id
= 2;
345 rep_data
= kmalloc(4, GFP_KERNEL
);
349 /* ask to report tablet data if it is MT Tablet PC or
351 if (features
->type
== TABLETPC2FG
) {
358 error
= wacom_set_report(intf
, WAC_HID_FEATURE_REPORT
,
359 report_id
, rep_data
, 4, 1);
361 error
= wacom_get_report(intf
,
362 WAC_HID_FEATURE_REPORT
,
363 report_id
, rep_data
, 4, 1);
364 } while ((error
< 0 || rep_data
[1] != 4) && limit
++ < WAC_MSG_RETRIES
);
365 } else if (features
->type
!= TABLETPC
) {
369 error
= wacom_set_report(intf
, WAC_HID_FEATURE_REPORT
,
370 report_id
, rep_data
, 2, 1);
372 error
= wacom_get_report(intf
,
373 WAC_HID_FEATURE_REPORT
,
374 report_id
, rep_data
, 2, 1);
375 } while ((error
< 0 || rep_data
[1] != 2) && limit
++ < WAC_MSG_RETRIES
);
380 return error
< 0 ? error
: 0;
383 static int wacom_retrieve_hid_descriptor(struct usb_interface
*intf
,
384 struct wacom_features
*features
)
387 struct usb_host_interface
*interface
= intf
->cur_altsetting
;
388 struct hid_descriptor
*hid_desc
;
390 /* default features */
391 features
->device_type
= BTN_TOOL_PEN
;
392 features
->x_fuzz
= 4;
393 features
->y_fuzz
= 4;
394 features
->pressure_fuzz
= 0;
395 features
->distance_fuzz
= 0;
397 /* only Tablet PCs and Bamboo P&T need to retrieve the info */
398 if ((features
->type
!= TABLETPC
) && (features
->type
!= TABLETPC2FG
) &&
399 (features
->type
!= BAMBOO_PT
))
402 if (usb_get_extra_descriptor(interface
, HID_DEVICET_HID
, &hid_desc
)) {
403 if (usb_get_extra_descriptor(&interface
->endpoint
[0],
404 HID_DEVICET_REPORT
, &hid_desc
)) {
405 printk("wacom: can not retrieve extra class descriptor\n");
410 error
= wacom_parse_hid(intf
, hid_desc
, features
);
418 struct wacom_usbdev_data
{
419 struct list_head list
;
421 struct usb_device
*dev
;
422 struct wacom_shared shared
;
425 static LIST_HEAD(wacom_udev_list
);
426 static DEFINE_MUTEX(wacom_udev_list_lock
);
428 static struct wacom_usbdev_data
*wacom_get_usbdev_data(struct usb_device
*dev
)
430 struct wacom_usbdev_data
*data
;
432 list_for_each_entry(data
, &wacom_udev_list
, list
) {
433 if (data
->dev
== dev
) {
434 kref_get(&data
->kref
);
442 static int wacom_add_shared_data(struct wacom_wac
*wacom
,
443 struct usb_device
*dev
)
445 struct wacom_usbdev_data
*data
;
448 mutex_lock(&wacom_udev_list_lock
);
450 data
= wacom_get_usbdev_data(dev
);
452 data
= kzalloc(sizeof(struct wacom_usbdev_data
), GFP_KERNEL
);
458 kref_init(&data
->kref
);
460 list_add_tail(&data
->list
, &wacom_udev_list
);
463 wacom
->shared
= &data
->shared
;
466 mutex_unlock(&wacom_udev_list_lock
);
470 static void wacom_release_shared_data(struct kref
*kref
)
472 struct wacom_usbdev_data
*data
=
473 container_of(kref
, struct wacom_usbdev_data
, kref
);
475 mutex_lock(&wacom_udev_list_lock
);
476 list_del(&data
->list
);
477 mutex_unlock(&wacom_udev_list_lock
);
482 static void wacom_remove_shared_data(struct wacom_wac
*wacom
)
484 struct wacom_usbdev_data
*data
;
487 data
= container_of(wacom
->shared
, struct wacom_usbdev_data
, shared
);
488 kref_put(&data
->kref
, wacom_release_shared_data
);
489 wacom
->shared
= NULL
;
493 static int wacom_led_control(struct wacom
*wacom
)
498 buf
= kzalloc(9, GFP_KERNEL
);
502 buf
[0] = WAC_CMD_LED_CONTROL
;
503 buf
[1] = wacom
->led
.select
>= 0 ? wacom
->led
.select
| 4 : 0;
504 buf
[2] = wacom
->led
.llv
;
505 buf
[3] = wacom
->led
.hlv
;
506 buf
[4] = wacom
->led
.img_lum
;
508 retval
= wacom_set_report(wacom
->intf
, 0x03, WAC_CMD_LED_CONTROL
,
509 buf
, 9, WAC_CMD_RETRIES
);
515 static int wacom_led_putimage(struct wacom
*wacom
, int button_id
, const void *img
)
520 buf
= kzalloc(259, GFP_KERNEL
);
524 /* Send 'start' command */
525 buf
[0] = WAC_CMD_ICON_START
;
527 retval
= wacom_set_report(wacom
->intf
, 0x03, WAC_CMD_ICON_START
,
528 buf
, 2, WAC_CMD_RETRIES
);
532 buf
[0] = WAC_CMD_ICON_XFER
;
533 buf
[1] = button_id
& 0x07;
534 for (i
= 0; i
< 4; i
++) {
536 memcpy(buf
+ 3, img
+ i
* 256, 256);
538 retval
= wacom_set_report(wacom
->intf
, 0x03, WAC_CMD_ICON_XFER
,
539 buf
, 259, WAC_CMD_RETRIES
);
545 buf
[0] = WAC_CMD_ICON_START
;
547 wacom_set_report(wacom
->intf
, 0x03, WAC_CMD_ICON_START
,
548 buf
, 2, WAC_CMD_RETRIES
);
555 static ssize_t
wacom_led_select_store(struct device
*dev
,
556 struct device_attribute
*attr
,
557 const char *buf
, size_t count
)
559 struct wacom
*wacom
= dev_get_drvdata(dev
);
563 err
= kstrtouint(buf
, 10, &id
);
567 mutex_lock(&wacom
->lock
);
569 wacom
->led
.select
= id
;
570 err
= wacom_led_control(wacom
);
572 mutex_unlock(&wacom
->lock
);
574 return err
< 0 ? err
: count
;
577 static DEVICE_ATTR(status_led_select
, S_IWUSR
, NULL
, wacom_led_select_store
);
579 static ssize_t
wacom_luminance_store(struct wacom
*wacom
, u8
*dest
,
580 const char *buf
, size_t count
)
585 err
= kstrtouint(buf
, 10, &value
);
589 mutex_lock(&wacom
->lock
);
591 *dest
= value
& 0x7f;
592 err
= wacom_led_control(wacom
);
594 mutex_unlock(&wacom
->lock
);
596 return err
< 0 ? err
: count
;
599 #define DEVICE_LUMINANCE_ATTR(name, field) \
600 static ssize_t wacom_##name##_luminance_store(struct device *dev, \
601 struct device_attribute *attr, const char *buf, size_t count) \
603 struct wacom *wacom = dev_get_drvdata(dev); \
605 return wacom_luminance_store(wacom, &wacom->led.field, \
608 static DEVICE_ATTR(name##_luminance, S_IWUSR, \
609 NULL, wacom_##name##_luminance_store)
611 DEVICE_LUMINANCE_ATTR(status0
, llv
);
612 DEVICE_LUMINANCE_ATTR(status1
, hlv
);
613 DEVICE_LUMINANCE_ATTR(buttons
, img_lum
);
615 static ssize_t
wacom_button_image_store(struct device
*dev
, int button_id
,
616 const char *buf
, size_t count
)
618 struct wacom
*wacom
= dev_get_drvdata(dev
);
624 mutex_lock(&wacom
->lock
);
626 err
= wacom_led_putimage(wacom
, button_id
, buf
);
628 mutex_unlock(&wacom
->lock
);
630 return err
< 0 ? err
: count
;
633 #define DEVICE_BTNIMG_ATTR(BUTTON_ID) \
634 static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev, \
635 struct device_attribute *attr, const char *buf, size_t count) \
637 return wacom_button_image_store(dev, BUTTON_ID, buf, count); \
639 static DEVICE_ATTR(button##BUTTON_ID##_rawimg, S_IWUSR, \
640 NULL, wacom_btnimg##BUTTON_ID##_store)
642 DEVICE_BTNIMG_ATTR(0);
643 DEVICE_BTNIMG_ATTR(1);
644 DEVICE_BTNIMG_ATTR(2);
645 DEVICE_BTNIMG_ATTR(3);
646 DEVICE_BTNIMG_ATTR(4);
647 DEVICE_BTNIMG_ATTR(5);
648 DEVICE_BTNIMG_ATTR(6);
649 DEVICE_BTNIMG_ATTR(7);
651 static struct attribute
*wacom_led_attrs
[] = {
652 &dev_attr_status0_luminance
.attr
,
653 &dev_attr_status1_luminance
.attr
,
654 &dev_attr_status_led_select
.attr
,
655 &dev_attr_buttons_luminance
.attr
,
656 &dev_attr_button0_rawimg
.attr
,
657 &dev_attr_button1_rawimg
.attr
,
658 &dev_attr_button2_rawimg
.attr
,
659 &dev_attr_button3_rawimg
.attr
,
660 &dev_attr_button4_rawimg
.attr
,
661 &dev_attr_button5_rawimg
.attr
,
662 &dev_attr_button6_rawimg
.attr
,
663 &dev_attr_button7_rawimg
.attr
,
667 static struct attribute_group wacom_led_attr_group
= {
669 .attrs
= wacom_led_attrs
,
672 static int wacom_initialize_leds(struct wacom
*wacom
)
676 if (wacom
->wacom_wac
.features
.type
>= INTUOS4
&&
677 wacom
->wacom_wac
.features
.type
<= INTUOS4L
) {
679 /* Initialize default values */
680 wacom
->led
.select
= 0;
683 wacom
->led
.img_lum
= 10;
684 wacom_led_control(wacom
);
686 error
= sysfs_create_group(&wacom
->intf
->dev
.kobj
,
687 &wacom_led_attr_group
);
689 dev_err(&wacom
->intf
->dev
,
690 "cannot create sysfs group err: %d\n", error
);
698 static void wacom_destroy_leds(struct wacom
*wacom
)
700 if (wacom
->wacom_wac
.features
.type
>= INTUOS4
&&
701 wacom
->wacom_wac
.features
.type
<= INTUOS4L
) {
702 sysfs_remove_group(&wacom
->intf
->dev
.kobj
,
703 &wacom_led_attr_group
);
707 static int wacom_probe(struct usb_interface
*intf
, const struct usb_device_id
*id
)
709 struct usb_device
*dev
= interface_to_usbdev(intf
);
710 struct usb_endpoint_descriptor
*endpoint
;
712 struct wacom_wac
*wacom_wac
;
713 struct wacom_features
*features
;
714 struct input_dev
*input_dev
;
717 if (!id
->driver_info
)
720 wacom
= kzalloc(sizeof(struct wacom
), GFP_KERNEL
);
721 input_dev
= input_allocate_device();
722 if (!wacom
|| !input_dev
) {
727 wacom_wac
= &wacom
->wacom_wac
;
728 wacom_wac
->features
= *((struct wacom_features
*)id
->driver_info
);
729 features
= &wacom_wac
->features
;
730 if (features
->pktlen
> WACOM_PKGLEN_MAX
) {
735 wacom_wac
->data
= usb_alloc_coherent(dev
, WACOM_PKGLEN_MAX
,
736 GFP_KERNEL
, &wacom
->data_dma
);
737 if (!wacom_wac
->data
) {
742 wacom
->irq
= usb_alloc_urb(0, GFP_KERNEL
);
750 mutex_init(&wacom
->lock
);
751 usb_make_path(dev
, wacom
->phys
, sizeof(wacom
->phys
));
752 strlcat(wacom
->phys
, "/input0", sizeof(wacom
->phys
));
754 wacom_wac
->input
= input_dev
;
756 endpoint
= &intf
->cur_altsetting
->endpoint
[0].desc
;
758 /* Retrieve the physical and logical size for OEM devices */
759 error
= wacom_retrieve_hid_descriptor(intf
, features
);
763 wacom_setup_device_quirks(features
);
765 strlcpy(wacom_wac
->name
, features
->name
, sizeof(wacom_wac
->name
));
767 if (features
->quirks
& WACOM_QUIRK_MULTI_INPUT
) {
768 /* Append the device type to the name */
769 strlcat(wacom_wac
->name
,
770 features
->device_type
== BTN_TOOL_PEN
?
772 sizeof(wacom_wac
->name
));
774 error
= wacom_add_shared_data(wacom_wac
, dev
);
779 input_dev
->name
= wacom_wac
->name
;
780 input_dev
->dev
.parent
= &intf
->dev
;
781 input_dev
->open
= wacom_open
;
782 input_dev
->close
= wacom_close
;
783 usb_to_input_id(dev
, &input_dev
->id
);
784 input_set_drvdata(input_dev
, wacom
);
786 wacom_setup_input_capabilities(input_dev
, wacom_wac
);
788 usb_fill_int_urb(wacom
->irq
, dev
,
789 usb_rcvintpipe(dev
, endpoint
->bEndpointAddress
),
790 wacom_wac
->data
, features
->pktlen
,
791 wacom_sys_irq
, wacom
, endpoint
->bInterval
);
792 wacom
->irq
->transfer_dma
= wacom
->data_dma
;
793 wacom
->irq
->transfer_flags
|= URB_NO_TRANSFER_DMA_MAP
;
795 error
= wacom_initialize_leds(wacom
);
799 error
= input_register_device(input_dev
);
803 /* Note that if query fails it is not a hard failure */
804 wacom_query_tablet_data(intf
, features
);
806 usb_set_intfdata(intf
, wacom
);
809 fail5
: wacom_destroy_leds(wacom
);
810 fail4
: wacom_remove_shared_data(wacom_wac
);
811 fail3
: usb_free_urb(wacom
->irq
);
812 fail2
: usb_free_coherent(dev
, WACOM_PKGLEN_MAX
, wacom_wac
->data
, wacom
->data_dma
);
813 fail1
: input_free_device(input_dev
);
818 static void wacom_disconnect(struct usb_interface
*intf
)
820 struct wacom
*wacom
= usb_get_intfdata(intf
);
822 usb_set_intfdata(intf
, NULL
);
824 usb_kill_urb(wacom
->irq
);
825 input_unregister_device(wacom
->wacom_wac
.input
);
826 wacom_destroy_leds(wacom
);
827 usb_free_urb(wacom
->irq
);
828 usb_free_coherent(interface_to_usbdev(intf
), WACOM_PKGLEN_MAX
,
829 wacom
->wacom_wac
.data
, wacom
->data_dma
);
830 wacom_remove_shared_data(&wacom
->wacom_wac
);
834 static int wacom_suspend(struct usb_interface
*intf
, pm_message_t message
)
836 struct wacom
*wacom
= usb_get_intfdata(intf
);
838 mutex_lock(&wacom
->lock
);
839 usb_kill_urb(wacom
->irq
);
840 mutex_unlock(&wacom
->lock
);
845 static int wacom_resume(struct usb_interface
*intf
)
847 struct wacom
*wacom
= usb_get_intfdata(intf
);
848 struct wacom_features
*features
= &wacom
->wacom_wac
.features
;
851 mutex_lock(&wacom
->lock
);
853 /* switch to wacom mode first */
854 wacom_query_tablet_data(intf
, features
);
855 wacom_led_control(wacom
);
857 if (wacom
->open
&& usb_submit_urb(wacom
->irq
, GFP_NOIO
) < 0)
860 mutex_unlock(&wacom
->lock
);
865 static int wacom_reset_resume(struct usb_interface
*intf
)
867 return wacom_resume(intf
);
870 static struct usb_driver wacom_driver
= {
872 .id_table
= wacom_ids
,
873 .probe
= wacom_probe
,
874 .disconnect
= wacom_disconnect
,
875 .suspend
= wacom_suspend
,
876 .resume
= wacom_resume
,
877 .reset_resume
= wacom_reset_resume
,
878 .supports_autosuspend
= 1,
881 static int __init
wacom_init(void)
885 result
= usb_register(&wacom_driver
);
887 printk(KERN_INFO KBUILD_MODNAME
": " DRIVER_VERSION
":"
892 static void __exit
wacom_exit(void)
894 usb_deregister(&wacom_driver
);
897 module_init(wacom_init
);
898 module_exit(wacom_exit
);