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 0xa1
32 #define HID_COLLECTION_LOGICAL 0x02
33 #define HID_COLLECTION_END 0xc0
41 struct hid_descriptor
{
42 struct usb_descriptor_header header
;
47 __le16 wDescriptorLength
;
48 } __attribute__ ((packed
));
50 /* defines to get/set USB message */
51 #define USB_REQ_GET_REPORT 0x01
52 #define USB_REQ_SET_REPORT 0x09
54 #define WAC_HID_FEATURE_REPORT 0x03
55 #define WAC_MSG_RETRIES 5
57 #define WAC_CMD_LED_CONTROL 0x20
58 #define WAC_CMD_ICON_START 0x21
59 #define WAC_CMD_ICON_XFER 0x23
60 #define WAC_CMD_RETRIES 10
62 static int wacom_get_report(struct usb_interface
*intf
, u8 type
, u8 id
,
63 void *buf
, size_t size
, unsigned int retries
)
65 struct usb_device
*dev
= interface_to_usbdev(intf
);
69 retval
= usb_control_msg(dev
, usb_rcvctrlpipe(dev
, 0),
71 USB_DIR_IN
| USB_TYPE_CLASS
|
74 intf
->altsetting
[0].desc
.bInterfaceNumber
,
76 } while ((retval
== -ETIMEDOUT
|| retval
== -EPIPE
) && --retries
);
81 static int wacom_set_report(struct usb_interface
*intf
, u8 type
, u8 id
,
82 void *buf
, size_t size
, unsigned int retries
)
84 struct usb_device
*dev
= interface_to_usbdev(intf
);
88 retval
= usb_control_msg(dev
, usb_sndctrlpipe(dev
, 0),
90 USB_TYPE_CLASS
| USB_RECIP_INTERFACE
,
92 intf
->altsetting
[0].desc
.bInterfaceNumber
,
94 } while ((retval
== -ETIMEDOUT
|| retval
== -EPIPE
) && --retries
);
99 static void wacom_sys_irq(struct urb
*urb
)
101 struct wacom
*wacom
= urb
->context
;
104 switch (urb
->status
) {
111 /* this urb is terminated, clean up */
112 dbg("%s - urb shutting down with status: %d", __func__
, urb
->status
);
115 dbg("%s - nonzero urb status received: %d", __func__
, urb
->status
);
119 wacom_wac_irq(&wacom
->wacom_wac
, urb
->actual_length
);
122 usb_mark_last_busy(wacom
->usbdev
);
123 retval
= usb_submit_urb(urb
, GFP_ATOMIC
);
125 err ("%s - usb_submit_urb failed with result %d",
129 static int wacom_open(struct input_dev
*dev
)
131 struct wacom
*wacom
= input_get_drvdata(dev
);
134 if (usb_autopm_get_interface(wacom
->intf
) < 0)
137 mutex_lock(&wacom
->lock
);
139 if (usb_submit_urb(wacom
->irq
, GFP_KERNEL
)) {
145 wacom
->intf
->needs_remote_wakeup
= 1;
148 mutex_unlock(&wacom
->lock
);
149 usb_autopm_put_interface(wacom
->intf
);
153 static void wacom_close(struct input_dev
*dev
)
155 struct wacom
*wacom
= input_get_drvdata(dev
);
158 autopm_error
= usb_autopm_get_interface(wacom
->intf
);
160 mutex_lock(&wacom
->lock
);
161 usb_kill_urb(wacom
->irq
);
163 wacom
->intf
->needs_remote_wakeup
= 0;
164 mutex_unlock(&wacom
->lock
);
167 usb_autopm_put_interface(wacom
->intf
);
170 static int wacom_parse_logical_collection(unsigned char *report
,
171 struct wacom_features
*features
)
175 if (features
->type
== BAMBOO_PT
) {
177 /* Logical collection is only used by 3rd gen Bamboo Touch */
178 features
->pktlen
= WACOM_PKGLEN_BBTOUCH3
;
179 features
->device_type
= BTN_TOOL_FINGER
;
182 * Stylus and Touch have same active area
183 * so compute physical size based on stylus
184 * data before its overwritten.
187 (features
->x_max
* features
->x_resolution
) / 100;
189 (features
->y_max
* features
->y_resolution
) / 100;
191 features
->x_max
= features
->y_max
=
192 get_unaligned_le16(&report
[10]);
200 * Interface Descriptor of wacom devices can be incomplete and
201 * inconsistent so wacom_features table is used to store stylus
202 * device's packet lengths, various maximum values, and tablet
203 * resolution based on product ID's.
205 * For devices that contain 2 interfaces, wacom_features table is
206 * inaccurate for the touch interface. Since the Interface Descriptor
207 * for touch interfaces has pretty complete data, this function exists
208 * to query tablet for this missing information instead of hard coding in
209 * an additional table.
211 * A typical Interface Descriptor for a stylus will contain a
212 * boot mouse application collection that is not of interest and this
213 * function will ignore it.
215 * It also contains a digitizer application collection that also is not
216 * of interest since any information it contains would be duplicate
217 * of what is in wacom_features. Usually it defines a report of an array
218 * of bytes that could be used as max length of the stylus packet returned.
219 * If it happens to define a Digitizer-Stylus Physical Collection then
220 * the X and Y logical values contain valid data but it is ignored.
222 * A typical Interface Descriptor for a touch interface will contain a
223 * Digitizer-Finger Physical Collection which will define both logical
224 * X/Y maximum as well as the physical size of tablet. Since touch
225 * interfaces haven't supported pressure or distance, this is enough
226 * information to override invalid values in the wacom_features table.
228 * 3rd gen Bamboo Touch no longer define a Digitizer-Finger Pysical
229 * Collection. Instead they define a Logical Collection with a single
230 * Logical Maximum for both X and Y.
232 static int wacom_parse_hid(struct usb_interface
*intf
,
233 struct hid_descriptor
*hid_desc
,
234 struct wacom_features
*features
)
236 struct usb_device
*dev
= interface_to_usbdev(intf
);
238 /* result has to be defined as int for some devices */
240 int i
= 0, usage
= WCM_UNDEFINED
, finger
= 0, pen
= 0;
241 unsigned char *report
;
243 report
= kzalloc(hid_desc
->wDescriptorLength
, GFP_KERNEL
);
247 /* retrive report descriptors */
249 result
= usb_control_msg(dev
, usb_rcvctrlpipe(dev
, 0),
250 USB_REQ_GET_DESCRIPTOR
,
251 USB_RECIP_INTERFACE
| USB_DIR_IN
,
252 HID_DEVICET_REPORT
<< 8,
253 intf
->altsetting
[0].desc
.bInterfaceNumber
, /* interface */
255 hid_desc
->wDescriptorLength
,
257 } while (result
< 0 && limit
++ < WAC_MSG_RETRIES
);
259 /* No need to parse the Descriptor. It isn't an error though */
263 for (i
= 0; i
< hid_desc
->wDescriptorLength
; i
++) {
267 switch (report
[i
+ 1]) {
268 case HID_USAGE_PAGE_DIGITIZER
:
269 usage
= WCM_DIGITIZER
;
273 case HID_USAGE_PAGE_DESKTOP
:
281 switch (report
[i
+ 1]) {
283 if (usage
== WCM_DESKTOP
) {
285 features
->device_type
= BTN_TOOL_FINGER
;
286 if (features
->type
== TABLETPC2FG
) {
287 /* need to reset back */
288 features
->pktlen
= WACOM_PKGLEN_TPC2FG
;
290 if (features
->type
== BAMBOO_PT
) {
291 /* need to reset back */
292 features
->pktlen
= WACOM_PKGLEN_BBTOUCH
;
294 get_unaligned_le16(&report
[i
+ 5]);
296 get_unaligned_le16(&report
[i
+ 8]);
300 get_unaligned_le16(&report
[i
+ 3]);
302 get_unaligned_le16(&report
[i
+ 6]);
303 features
->unit
= report
[i
+ 9];
304 features
->unitExpo
= report
[i
+ 11];
308 /* penabled only accepts exact bytes of data */
309 if (features
->type
== TABLETPC2FG
)
310 features
->pktlen
= WACOM_PKGLEN_GRAPHIRE
;
311 features
->device_type
= BTN_TOOL_PEN
;
313 get_unaligned_le16(&report
[i
+ 3]);
320 if (usage
== WCM_DESKTOP
) {
322 features
->device_type
= BTN_TOOL_FINGER
;
323 if (features
->type
== TABLETPC2FG
) {
324 /* need to reset back */
325 features
->pktlen
= WACOM_PKGLEN_TPC2FG
;
327 get_unaligned_le16(&report
[i
+ 3]);
329 get_unaligned_le16(&report
[i
+ 6]);
331 } else if (features
->type
== BAMBOO_PT
) {
332 /* need to reset back */
333 features
->pktlen
= WACOM_PKGLEN_BBTOUCH
;
335 get_unaligned_le16(&report
[i
+ 3]);
337 get_unaligned_le16(&report
[i
+ 6]);
343 get_unaligned_le16(&report
[i
+ 3]);
347 /* penabled only accepts exact bytes of data */
348 if (features
->type
== TABLETPC2FG
)
349 features
->pktlen
= WACOM_PKGLEN_GRAPHIRE
;
350 features
->device_type
= BTN_TOOL_PEN
;
352 get_unaligned_le16(&report
[i
+ 3]);
358 case HID_USAGE_FINGER
:
364 * Requiring Stylus Usage will ignore boot mouse
365 * X/Y values and some cases of invalid Digitizer X/Y
366 * values commonly reported.
368 case HID_USAGE_STYLUS
:
375 case HID_COLLECTION_END
:
376 /* reset UsagePage and Finger */
383 case HID_COLLECTION_LOGICAL
:
384 i
+= wacom_parse_logical_collection(&report
[i
],
398 static int wacom_query_tablet_data(struct usb_interface
*intf
, struct wacom_features
*features
)
400 unsigned char *rep_data
;
401 int limit
= 0, report_id
= 2;
404 rep_data
= kmalloc(4, GFP_KERNEL
);
408 /* ask to report tablet data if it is MT Tablet PC or
410 if (features
->type
== TABLETPC2FG
) {
417 error
= wacom_set_report(intf
, WAC_HID_FEATURE_REPORT
,
418 report_id
, rep_data
, 4, 1);
420 error
= wacom_get_report(intf
,
421 WAC_HID_FEATURE_REPORT
,
422 report_id
, rep_data
, 4, 1);
423 } while ((error
< 0 || rep_data
[1] != 4) && limit
++ < WAC_MSG_RETRIES
);
424 } else if (features
->type
!= TABLETPC
&&
425 features
->device_type
== BTN_TOOL_PEN
) {
429 error
= wacom_set_report(intf
, WAC_HID_FEATURE_REPORT
,
430 report_id
, rep_data
, 2, 1);
432 error
= wacom_get_report(intf
,
433 WAC_HID_FEATURE_REPORT
,
434 report_id
, rep_data
, 2, 1);
435 } while ((error
< 0 || rep_data
[1] != 2) && limit
++ < WAC_MSG_RETRIES
);
440 return error
< 0 ? error
: 0;
443 static int wacom_retrieve_hid_descriptor(struct usb_interface
*intf
,
444 struct wacom_features
*features
)
447 struct usb_host_interface
*interface
= intf
->cur_altsetting
;
448 struct hid_descriptor
*hid_desc
;
450 /* default features */
451 features
->device_type
= BTN_TOOL_PEN
;
452 features
->x_fuzz
= 4;
453 features
->y_fuzz
= 4;
454 features
->pressure_fuzz
= 0;
455 features
->distance_fuzz
= 0;
457 /* only Tablet PCs and Bamboo P&T need to retrieve the info */
458 if ((features
->type
!= TABLETPC
) && (features
->type
!= TABLETPC2FG
) &&
459 (features
->type
!= BAMBOO_PT
))
462 if (usb_get_extra_descriptor(interface
, HID_DEVICET_HID
, &hid_desc
)) {
463 if (usb_get_extra_descriptor(&interface
->endpoint
[0],
464 HID_DEVICET_REPORT
, &hid_desc
)) {
465 printk("wacom: can not retrieve extra class descriptor\n");
470 error
= wacom_parse_hid(intf
, hid_desc
, features
);
478 struct wacom_usbdev_data
{
479 struct list_head list
;
481 struct usb_device
*dev
;
482 struct wacom_shared shared
;
485 static LIST_HEAD(wacom_udev_list
);
486 static DEFINE_MUTEX(wacom_udev_list_lock
);
488 static struct wacom_usbdev_data
*wacom_get_usbdev_data(struct usb_device
*dev
)
490 struct wacom_usbdev_data
*data
;
492 list_for_each_entry(data
, &wacom_udev_list
, list
) {
493 if (data
->dev
== dev
) {
494 kref_get(&data
->kref
);
502 static int wacom_add_shared_data(struct wacom_wac
*wacom
,
503 struct usb_device
*dev
)
505 struct wacom_usbdev_data
*data
;
508 mutex_lock(&wacom_udev_list_lock
);
510 data
= wacom_get_usbdev_data(dev
);
512 data
= kzalloc(sizeof(struct wacom_usbdev_data
), GFP_KERNEL
);
518 kref_init(&data
->kref
);
520 list_add_tail(&data
->list
, &wacom_udev_list
);
523 wacom
->shared
= &data
->shared
;
526 mutex_unlock(&wacom_udev_list_lock
);
530 static void wacom_release_shared_data(struct kref
*kref
)
532 struct wacom_usbdev_data
*data
=
533 container_of(kref
, struct wacom_usbdev_data
, kref
);
535 mutex_lock(&wacom_udev_list_lock
);
536 list_del(&data
->list
);
537 mutex_unlock(&wacom_udev_list_lock
);
542 static void wacom_remove_shared_data(struct wacom_wac
*wacom
)
544 struct wacom_usbdev_data
*data
;
547 data
= container_of(wacom
->shared
, struct wacom_usbdev_data
, shared
);
548 kref_put(&data
->kref
, wacom_release_shared_data
);
549 wacom
->shared
= NULL
;
553 static int wacom_led_control(struct wacom
*wacom
)
558 buf
= kzalloc(9, GFP_KERNEL
);
562 if (wacom
->wacom_wac
.features
.type
== WACOM_21UX2
||
563 wacom
->wacom_wac
.features
.type
== WACOM_24HD
)
564 led
= (wacom
->led
.select
[1] << 4) | 0x40;
566 led
|= wacom
->led
.select
[0] | 0x4;
568 buf
[0] = WAC_CMD_LED_CONTROL
;
570 buf
[2] = wacom
->led
.llv
;
571 buf
[3] = wacom
->led
.hlv
;
572 buf
[4] = wacom
->led
.img_lum
;
574 retval
= wacom_set_report(wacom
->intf
, 0x03, WAC_CMD_LED_CONTROL
,
575 buf
, 9, WAC_CMD_RETRIES
);
581 static int wacom_led_putimage(struct wacom
*wacom
, int button_id
, const void *img
)
586 buf
= kzalloc(259, GFP_KERNEL
);
590 /* Send 'start' command */
591 buf
[0] = WAC_CMD_ICON_START
;
593 retval
= wacom_set_report(wacom
->intf
, 0x03, WAC_CMD_ICON_START
,
594 buf
, 2, WAC_CMD_RETRIES
);
598 buf
[0] = WAC_CMD_ICON_XFER
;
599 buf
[1] = button_id
& 0x07;
600 for (i
= 0; i
< 4; i
++) {
602 memcpy(buf
+ 3, img
+ i
* 256, 256);
604 retval
= wacom_set_report(wacom
->intf
, 0x03, WAC_CMD_ICON_XFER
,
605 buf
, 259, WAC_CMD_RETRIES
);
611 buf
[0] = WAC_CMD_ICON_START
;
613 wacom_set_report(wacom
->intf
, 0x03, WAC_CMD_ICON_START
,
614 buf
, 2, WAC_CMD_RETRIES
);
621 static ssize_t
wacom_led_select_store(struct device
*dev
, int set_id
,
622 const char *buf
, size_t count
)
624 struct wacom
*wacom
= dev_get_drvdata(dev
);
628 err
= kstrtouint(buf
, 10, &id
);
632 mutex_lock(&wacom
->lock
);
634 wacom
->led
.select
[set_id
] = id
& 0x3;
635 err
= wacom_led_control(wacom
);
637 mutex_unlock(&wacom
->lock
);
639 return err
< 0 ? err
: count
;
642 #define DEVICE_LED_SELECT_ATTR(SET_ID) \
643 static ssize_t wacom_led##SET_ID##_select_store(struct device *dev, \
644 struct device_attribute *attr, const char *buf, size_t count) \
646 return wacom_led_select_store(dev, SET_ID, buf, count); \
648 static ssize_t wacom_led##SET_ID##_select_show(struct device *dev, \
649 struct device_attribute *attr, char *buf) \
651 struct wacom *wacom = dev_get_drvdata(dev); \
652 return snprintf(buf, 2, "%d\n", wacom->led.select[SET_ID]); \
654 static DEVICE_ATTR(status_led##SET_ID##_select, S_IWUSR | S_IRUSR, \
655 wacom_led##SET_ID##_select_show, \
656 wacom_led##SET_ID##_select_store)
658 DEVICE_LED_SELECT_ATTR(0);
659 DEVICE_LED_SELECT_ATTR(1);
661 static ssize_t
wacom_luminance_store(struct wacom
*wacom
, u8
*dest
,
662 const char *buf
, size_t count
)
667 err
= kstrtouint(buf
, 10, &value
);
671 mutex_lock(&wacom
->lock
);
673 *dest
= value
& 0x7f;
674 err
= wacom_led_control(wacom
);
676 mutex_unlock(&wacom
->lock
);
678 return err
< 0 ? err
: count
;
681 #define DEVICE_LUMINANCE_ATTR(name, field) \
682 static ssize_t wacom_##name##_luminance_store(struct device *dev, \
683 struct device_attribute *attr, const char *buf, size_t count) \
685 struct wacom *wacom = dev_get_drvdata(dev); \
687 return wacom_luminance_store(wacom, &wacom->led.field, \
690 static DEVICE_ATTR(name##_luminance, S_IWUSR, \
691 NULL, wacom_##name##_luminance_store)
693 DEVICE_LUMINANCE_ATTR(status0
, llv
);
694 DEVICE_LUMINANCE_ATTR(status1
, hlv
);
695 DEVICE_LUMINANCE_ATTR(buttons
, img_lum
);
697 static ssize_t
wacom_button_image_store(struct device
*dev
, int button_id
,
698 const char *buf
, size_t count
)
700 struct wacom
*wacom
= dev_get_drvdata(dev
);
706 mutex_lock(&wacom
->lock
);
708 err
= wacom_led_putimage(wacom
, button_id
, buf
);
710 mutex_unlock(&wacom
->lock
);
712 return err
< 0 ? err
: count
;
715 #define DEVICE_BTNIMG_ATTR(BUTTON_ID) \
716 static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev, \
717 struct device_attribute *attr, const char *buf, size_t count) \
719 return wacom_button_image_store(dev, BUTTON_ID, buf, count); \
721 static DEVICE_ATTR(button##BUTTON_ID##_rawimg, S_IWUSR, \
722 NULL, wacom_btnimg##BUTTON_ID##_store)
724 DEVICE_BTNIMG_ATTR(0);
725 DEVICE_BTNIMG_ATTR(1);
726 DEVICE_BTNIMG_ATTR(2);
727 DEVICE_BTNIMG_ATTR(3);
728 DEVICE_BTNIMG_ATTR(4);
729 DEVICE_BTNIMG_ATTR(5);
730 DEVICE_BTNIMG_ATTR(6);
731 DEVICE_BTNIMG_ATTR(7);
733 static struct attribute
*cintiq_led_attrs
[] = {
734 &dev_attr_status_led0_select
.attr
,
735 &dev_attr_status_led1_select
.attr
,
739 static struct attribute_group cintiq_led_attr_group
= {
741 .attrs
= cintiq_led_attrs
,
744 static struct attribute
*intuos4_led_attrs
[] = {
745 &dev_attr_status0_luminance
.attr
,
746 &dev_attr_status1_luminance
.attr
,
747 &dev_attr_status_led0_select
.attr
,
748 &dev_attr_buttons_luminance
.attr
,
749 &dev_attr_button0_rawimg
.attr
,
750 &dev_attr_button1_rawimg
.attr
,
751 &dev_attr_button2_rawimg
.attr
,
752 &dev_attr_button3_rawimg
.attr
,
753 &dev_attr_button4_rawimg
.attr
,
754 &dev_attr_button5_rawimg
.attr
,
755 &dev_attr_button6_rawimg
.attr
,
756 &dev_attr_button7_rawimg
.attr
,
760 static struct attribute_group intuos4_led_attr_group
= {
762 .attrs
= intuos4_led_attrs
,
765 static int wacom_initialize_leds(struct wacom
*wacom
)
769 /* Initialize default values */
770 switch (wacom
->wacom_wac
.features
.type
) {
773 wacom
->led
.select
[0] = 0;
774 wacom
->led
.select
[1] = 0;
777 wacom
->led
.img_lum
= 10;
778 error
= sysfs_create_group(&wacom
->intf
->dev
.kobj
,
779 &intuos4_led_attr_group
);
784 wacom
->led
.select
[0] = 0;
785 wacom
->led
.select
[1] = 0;
788 wacom
->led
.img_lum
= 0;
790 error
= sysfs_create_group(&wacom
->intf
->dev
.kobj
,
791 &cintiq_led_attr_group
);
799 dev_err(&wacom
->intf
->dev
,
800 "cannot create sysfs group err: %d\n", error
);
803 wacom_led_control(wacom
);
808 static void wacom_destroy_leds(struct wacom
*wacom
)
810 switch (wacom
->wacom_wac
.features
.type
) {
813 sysfs_remove_group(&wacom
->intf
->dev
.kobj
,
814 &intuos4_led_attr_group
);
819 sysfs_remove_group(&wacom
->intf
->dev
.kobj
,
820 &cintiq_led_attr_group
);
825 static int wacom_register_input(struct wacom
*wacom
)
827 struct input_dev
*input_dev
;
828 struct usb_interface
*intf
= wacom
->intf
;
829 struct usb_device
*dev
= interface_to_usbdev(intf
);
830 struct wacom_wac
*wacom_wac
= &(wacom
->wacom_wac
);
833 input_dev
= input_allocate_device();
837 input_dev
->name
= wacom_wac
->name
;
838 input_dev
->dev
.parent
= &intf
->dev
;
839 input_dev
->open
= wacom_open
;
840 input_dev
->close
= wacom_close
;
841 usb_to_input_id(dev
, &input_dev
->id
);
842 input_set_drvdata(input_dev
, wacom
);
844 wacom_wac
->input
= input_dev
;
845 wacom_setup_input_capabilities(input_dev
, wacom_wac
);
847 error
= input_register_device(input_dev
);
849 input_free_device(input_dev
);
850 wacom_wac
->input
= NULL
;
856 static int wacom_probe(struct usb_interface
*intf
, const struct usb_device_id
*id
)
858 struct usb_device
*dev
= interface_to_usbdev(intf
);
859 struct usb_endpoint_descriptor
*endpoint
;
861 struct wacom_wac
*wacom_wac
;
862 struct wacom_features
*features
;
865 if (!id
->driver_info
)
868 wacom
= kzalloc(sizeof(struct wacom
), GFP_KERNEL
);
870 wacom_wac
= &wacom
->wacom_wac
;
871 wacom_wac
->features
= *((struct wacom_features
*)id
->driver_info
);
872 features
= &wacom_wac
->features
;
873 if (features
->pktlen
> WACOM_PKGLEN_MAX
) {
878 wacom_wac
->data
= usb_alloc_coherent(dev
, WACOM_PKGLEN_MAX
,
879 GFP_KERNEL
, &wacom
->data_dma
);
880 if (!wacom_wac
->data
) {
885 wacom
->irq
= usb_alloc_urb(0, GFP_KERNEL
);
893 mutex_init(&wacom
->lock
);
894 usb_make_path(dev
, wacom
->phys
, sizeof(wacom
->phys
));
895 strlcat(wacom
->phys
, "/input0", sizeof(wacom
->phys
));
897 endpoint
= &intf
->cur_altsetting
->endpoint
[0].desc
;
899 /* Retrieve the physical and logical size for OEM devices */
900 error
= wacom_retrieve_hid_descriptor(intf
, features
);
904 wacom_setup_device_quirks(features
);
906 strlcpy(wacom_wac
->name
, features
->name
, sizeof(wacom_wac
->name
));
908 if (features
->quirks
& WACOM_QUIRK_MULTI_INPUT
) {
909 /* Append the device type to the name */
910 strlcat(wacom_wac
->name
,
911 features
->device_type
== BTN_TOOL_PEN
?
913 sizeof(wacom_wac
->name
));
915 error
= wacom_add_shared_data(wacom_wac
, dev
);
920 usb_fill_int_urb(wacom
->irq
, dev
,
921 usb_rcvintpipe(dev
, endpoint
->bEndpointAddress
),
922 wacom_wac
->data
, features
->pktlen
,
923 wacom_sys_irq
, wacom
, endpoint
->bInterval
);
924 wacom
->irq
->transfer_dma
= wacom
->data_dma
;
925 wacom
->irq
->transfer_flags
|= URB_NO_TRANSFER_DMA_MAP
;
927 error
= wacom_initialize_leds(wacom
);
931 error
= wacom_register_input(wacom
);
935 /* Note that if query fails it is not a hard failure */
936 wacom_query_tablet_data(intf
, features
);
938 usb_set_intfdata(intf
, wacom
);
941 fail5
: wacom_destroy_leds(wacom
);
942 fail4
: wacom_remove_shared_data(wacom_wac
);
943 fail3
: usb_free_urb(wacom
->irq
);
944 fail2
: usb_free_coherent(dev
, WACOM_PKGLEN_MAX
, wacom_wac
->data
, wacom
->data_dma
);
949 static void wacom_disconnect(struct usb_interface
*intf
)
951 struct wacom
*wacom
= usb_get_intfdata(intf
);
953 usb_set_intfdata(intf
, NULL
);
955 usb_kill_urb(wacom
->irq
);
956 input_unregister_device(wacom
->wacom_wac
.input
);
957 wacom_destroy_leds(wacom
);
958 usb_free_urb(wacom
->irq
);
959 usb_free_coherent(interface_to_usbdev(intf
), WACOM_PKGLEN_MAX
,
960 wacom
->wacom_wac
.data
, wacom
->data_dma
);
961 wacom_remove_shared_data(&wacom
->wacom_wac
);
965 static int wacom_suspend(struct usb_interface
*intf
, pm_message_t message
)
967 struct wacom
*wacom
= usb_get_intfdata(intf
);
969 mutex_lock(&wacom
->lock
);
970 usb_kill_urb(wacom
->irq
);
971 mutex_unlock(&wacom
->lock
);
976 static int wacom_resume(struct usb_interface
*intf
)
978 struct wacom
*wacom
= usb_get_intfdata(intf
);
979 struct wacom_features
*features
= &wacom
->wacom_wac
.features
;
982 mutex_lock(&wacom
->lock
);
984 /* switch to wacom mode first */
985 wacom_query_tablet_data(intf
, features
);
986 wacom_led_control(wacom
);
988 if (wacom
->open
&& usb_submit_urb(wacom
->irq
, GFP_NOIO
) < 0)
991 mutex_unlock(&wacom
->lock
);
996 static int wacom_reset_resume(struct usb_interface
*intf
)
998 return wacom_resume(intf
);
1001 static struct usb_driver wacom_driver
= {
1003 .id_table
= wacom_ids
,
1004 .probe
= wacom_probe
,
1005 .disconnect
= wacom_disconnect
,
1006 .suspend
= wacom_suspend
,
1007 .resume
= wacom_resume
,
1008 .reset_resume
= wacom_reset_resume
,
1009 .supports_autosuspend
= 1,
1012 module_usb_driver(wacom_driver
);