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 * Static values for max X/Y and resolution of Pen interface is stored in
176 * features. This mean physical size of active area can be computed.
177 * This is useful to do when Pen and Touch have same active area of tablet.
178 * This means for Touch device, we only need to find max X/Y value and we
179 * have enough information to compute resolution of touch.
181 static void wacom_set_phy_from_res(struct wacom_features *features)
183 features->x_phy = (features->x_max * 100) / features->x_resolution;
184 features->y_phy = (features->y_max * 100) / features->y_resolution;
187 static int wacom_parse_logical_collection(unsigned char *report,
188 struct wacom_features *features)
192 if (features->type == BAMBOO_PT) {
194 /* Logical collection is only used by 3rd gen Bamboo Touch */
195 features->pktlen = WACOM_PKGLEN_BBTOUCH3;
196 features->device_type = BTN_TOOL_FINGER;
198 wacom_set_phy_from_res(features);
200 features->x_max = features->y_max =
201 get_unaligned_le16(&report[10]);
208 static void wacom_retrieve_report_data(struct usb_interface *intf,
209 struct wacom_features *features)
212 unsigned char *rep_data;
214 rep_data = kmalloc(2, GFP_KERNEL);
218 result = wacom_get_report(intf, WAC_HID_FEATURE_REPORT,
219 rep_data[0], rep_data, 2,
222 if (result >= 0 && rep_data[1] > 2)
223 features->touch_max = rep_data[1];
230 * Interface Descriptor of wacom devices can be incomplete and
231 * inconsistent so wacom_features table is used to store stylus
232 * device's packet lengths, various maximum values, and tablet
233 * resolution based on product ID's.
235 * For devices that contain 2 interfaces, wacom_features table is
236 * inaccurate for the touch interface. Since the Interface Descriptor
237 * for touch interfaces has pretty complete data, this function exists
238 * to query tablet for this missing information instead of hard coding in
239 * an additional table.
241 * A typical Interface Descriptor for a stylus will contain a
242 * boot mouse application collection that is not of interest and this
243 * function will ignore it.
245 * It also contains a digitizer application collection that also is not
246 * of interest since any information it contains would be duplicate
247 * of what is in wacom_features. Usually it defines a report of an array
248 * of bytes that could be used as max length of the stylus packet returned.
249 * If it happens to define a Digitizer-Stylus Physical Collection then
250 * the X and Y logical values contain valid data but it is ignored.
252 * A typical Interface Descriptor for a touch interface will contain a
253 * Digitizer-Finger Physical Collection which will define both logical
254 * X/Y maximum as well as the physical size of tablet. Since touch
255 * interfaces haven't supported pressure or distance, this is enough
256 * information to override invalid values in the wacom_features table.
258 * 3rd gen Bamboo Touch no longer define a Digitizer-Finger Pysical
259 * Collection. Instead they define a Logical Collection with a single
260 * Logical Maximum for both X and Y.
262 * Intuos5 touch interface does not contain useful data. We deal with
263 * this after returning from this function.
265 static int wacom_parse_hid(struct usb_interface *intf,
266 struct hid_descriptor *hid_desc,
267 struct wacom_features *features)
269 struct usb_device *dev = interface_to_usbdev(intf);
271 /* result has to be defined as int for some devices */
273 int i = 0, usage = WCM_UNDEFINED, finger = 0, pen = 0;
274 unsigned char *report;
276 report = kzalloc(hid_desc->wDescriptorLength, GFP_KERNEL);
280 /* retrive report descriptors */
282 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
283 USB_REQ_GET_DESCRIPTOR,
284 USB_RECIP_INTERFACE | USB_DIR_IN,
285 HID_DEVICET_REPORT << 8,
286 intf->altsetting[0].desc.bInterfaceNumber, /* interface */
288 hid_desc->wDescriptorLength,
290 } while (result < 0 && limit++ < WAC_MSG_RETRIES);
292 /* No need to parse the Descriptor. It isn't an error though */
296 for (i = 0; i < hid_desc->wDescriptorLength; i++) {
300 switch (report[i + 1]) {
301 case HID_USAGE_PAGE_DIGITIZER:
302 usage = WCM_DIGITIZER;
306 case HID_USAGE_PAGE_DESKTOP:
314 switch (report[i + 1]) {
316 if (usage == WCM_DESKTOP) {
318 features->device_type = BTN_TOOL_FINGER;
319 if (features->type == TABLETPC2FG) {
320 /* need to reset back */
321 features->pktlen = WACOM_PKGLEN_TPC2FG;
324 if (features->type == MTSCREEN)
325 features->pktlen = WACOM_PKGLEN_MTOUCH;
327 if (features->type == BAMBOO_PT) {
328 /* need to reset back */
329 features->pktlen = WACOM_PKGLEN_BBTOUCH;
331 get_unaligned_le16(&report[i + 5]);
333 get_unaligned_le16(&report[i + 8]);
337 get_unaligned_le16(&report[i + 3]);
339 get_unaligned_le16(&report[i + 6]);
340 features->unit = report[i + 9];
341 features->unitExpo = report[i + 11];
345 /* penabled only accepts exact bytes of data */
346 if (features->type == TABLETPC2FG)
347 features->pktlen = WACOM_PKGLEN_GRAPHIRE;
348 features->device_type = BTN_TOOL_PEN;
350 get_unaligned_le16(&report[i + 3]);
357 if (usage == WCM_DESKTOP) {
359 int type = features->type;
361 if (type == TABLETPC2FG || type == MTSCREEN) {
363 get_unaligned_le16(&report[i + 3]);
365 get_unaligned_le16(&report[i + 6]);
367 } else if (type == BAMBOO_PT) {
369 get_unaligned_le16(&report[i + 3]);
371 get_unaligned_le16(&report[i + 6]);
377 get_unaligned_le16(&report[i + 3]);
382 get_unaligned_le16(&report[i + 3]);
388 case HID_USAGE_FINGER:
394 * Requiring Stylus Usage will ignore boot mouse
395 * X/Y values and some cases of invalid Digitizer X/Y
396 * values commonly reported.
398 case HID_USAGE_STYLUS:
403 case HID_USAGE_CONTACTMAX:
404 /* leave touch_max as is if predefined */
405 if (!features->touch_max)
406 wacom_retrieve_report_data(intf, features);
412 case HID_COLLECTION_END:
413 /* reset UsagePage and Finger */
420 case HID_COLLECTION_LOGICAL:
421 i += wacom_parse_logical_collection(&report[i],
435 static int wacom_query_tablet_data(struct usb_interface *intf, struct wacom_features *features)
437 unsigned char *rep_data;
438 int limit = 0, report_id = 2;
441 rep_data = kmalloc(4, GFP_KERNEL);
445 /* ask to report Wacom data */
446 if (features->device_type == BTN_TOOL_FINGER) {
447 /* if it is an MT Tablet PC touch */
448 if (features->type == TABLETPC2FG ||
449 features->type == MTSCREEN) {
456 error = wacom_set_report(intf,
457 WAC_HID_FEATURE_REPORT,
461 error = wacom_get_report(intf,
462 WAC_HID_FEATURE_REPORT,
465 } while ((error < 0 || rep_data[1] != 4) &&
466 limit++ < WAC_MSG_RETRIES);
468 } else if (features->type != TABLETPC &&
469 features->type != WIRELESS &&
470 features->device_type == BTN_TOOL_PEN) {
474 error = wacom_set_report(intf, WAC_HID_FEATURE_REPORT,
475 report_id, rep_data, 2, 1);
477 error = wacom_get_report(intf,
478 WAC_HID_FEATURE_REPORT,
479 report_id, rep_data, 2, 1);
480 } while ((error < 0 || rep_data[1] != 2) && limit++ < WAC_MSG_RETRIES);
485 return error < 0 ? error : 0;
488 static int wacom_retrieve_hid_descriptor(struct usb_interface *intf,
489 struct wacom_features *features)
492 struct usb_host_interface *interface = intf->cur_altsetting;
493 struct hid_descriptor *hid_desc;
495 /* default features */
496 features->device_type = BTN_TOOL_PEN;
497 features->x_fuzz = 4;
498 features->y_fuzz = 4;
499 features->pressure_fuzz = 0;
500 features->distance_fuzz = 0;
503 * The wireless device HID is basic and layout conflicts with
504 * other tablets (monitor and touch interface can look like pen).
505 * Skip the query for this type and modify defaults based on
508 if (features->type == WIRELESS) {
509 if (intf->cur_altsetting->desc.bInterfaceNumber == 0) {
510 features->device_type = 0;
511 } else if (intf->cur_altsetting->desc.bInterfaceNumber == 2) {
512 features->device_type = BTN_TOOL_DOUBLETAP;
513 features->pktlen = WACOM_PKGLEN_BBTOUCH3;
517 /* only devices that support touch need to retrieve the info */
518 if (features->type != TABLETPC &&
519 features->type != TABLETPC2FG &&
520 features->type != BAMBOO_PT &&
521 features->type != MTSCREEN) {
525 error = usb_get_extra_descriptor(interface, HID_DEVICET_HID, &hid_desc);
527 error = usb_get_extra_descriptor(&interface->endpoint[0],
528 HID_DEVICET_REPORT, &hid_desc);
531 "can not retrieve extra class descriptor\n");
535 error = wacom_parse_hid(intf, hid_desc, features);
543 struct wacom_usbdev_data {
544 struct list_head list;
546 struct usb_device *dev;
547 struct wacom_shared shared;
550 static LIST_HEAD(wacom_udev_list);
551 static DEFINE_MUTEX(wacom_udev_list_lock);
553 static struct wacom_usbdev_data *wacom_get_usbdev_data(struct usb_device *dev)
555 struct wacom_usbdev_data *data;
557 list_for_each_entry(data, &wacom_udev_list, list) {
558 if (data->dev == dev) {
559 kref_get(&data->kref);
567 static int wacom_add_shared_data(struct wacom_wac *wacom,
568 struct usb_device *dev)
570 struct wacom_usbdev_data *data;
573 mutex_lock(&wacom_udev_list_lock);
575 data = wacom_get_usbdev_data(dev);
577 data = kzalloc(sizeof(struct wacom_usbdev_data), GFP_KERNEL);
583 kref_init(&data->kref);
585 list_add_tail(&data->list, &wacom_udev_list);
588 wacom->shared = &data->shared;
591 mutex_unlock(&wacom_udev_list_lock);
595 static void wacom_release_shared_data(struct kref *kref)
597 struct wacom_usbdev_data *data =
598 container_of(kref, struct wacom_usbdev_data, kref);
600 mutex_lock(&wacom_udev_list_lock);
601 list_del(&data->list);
602 mutex_unlock(&wacom_udev_list_lock);
607 static void wacom_remove_shared_data(struct wacom_wac *wacom)
609 struct wacom_usbdev_data *data;
612 data = container_of(wacom->shared, struct wacom_usbdev_data, shared);
613 kref_put(&data->kref, wacom_release_shared_data);
614 wacom->shared = NULL;
618 static int wacom_led_control(struct wacom *wacom)
623 buf = kzalloc(9, GFP_KERNEL);
627 if (wacom->wacom_wac.features.type >= INTUOS5S &&
628 wacom->wacom_wac.features.type <= INTUOS5L) {
630 * Touch Ring and crop mark LED luminance may take on
631 * one of four values:
632 * 0 = Low; 1 = Medium; 2 = High; 3 = Off
634 int ring_led = wacom->led.select[0] & 0x03;
635 int ring_lum = (((wacom->led.llv & 0x60) >> 5) - 1) & 0x03;
638 buf[0] = WAC_CMD_LED_CONTROL;
639 buf[1] = (crop_lum << 4) | (ring_lum << 2) | (ring_led);
642 int led = wacom->led.select[0] | 0x4;
644 if (wacom->wacom_wac.features.type == WACOM_21UX2 ||
645 wacom->wacom_wac.features.type == WACOM_24HD)
646 led |= (wacom->led.select[1] << 4) | 0x40;
648 buf[0] = WAC_CMD_LED_CONTROL;
650 buf[2] = wacom->led.llv;
651 buf[3] = wacom->led.hlv;
652 buf[4] = wacom->led.img_lum;
655 retval = wacom_set_report(wacom->intf, 0x03, WAC_CMD_LED_CONTROL,
656 buf, 9, WAC_CMD_RETRIES);
662 static int wacom_led_putimage(struct wacom *wacom, int button_id, const void *img)
667 buf = kzalloc(259, GFP_KERNEL);
671 /* Send 'start' command */
672 buf[0] = WAC_CMD_ICON_START;
674 retval = wacom_set_report(wacom->intf, 0x03, WAC_CMD_ICON_START,
675 buf, 2, WAC_CMD_RETRIES);
679 buf[0] = WAC_CMD_ICON_XFER;
680 buf[1] = button_id & 0x07;
681 for (i = 0; i < 4; i++) {
683 memcpy(buf + 3, img + i * 256, 256);
685 retval = wacom_set_report(wacom->intf, 0x03, WAC_CMD_ICON_XFER,
686 buf, 259, WAC_CMD_RETRIES);
692 buf[0] = WAC_CMD_ICON_START;
694 wacom_set_report(wacom->intf, 0x03, WAC_CMD_ICON_START,
695 buf, 2, WAC_CMD_RETRIES);
702 static ssize_t wacom_led_select_store(struct device *dev, int set_id,
703 const char *buf, size_t count)
705 struct wacom *wacom = dev_get_drvdata(dev);
709 err = kstrtouint(buf, 10, &id);
713 mutex_lock(&wacom->lock);
715 wacom->led.select[set_id] = id & 0x3;
716 err = wacom_led_control(wacom);
718 mutex_unlock(&wacom->lock);
720 return err < 0 ? err : count;
723 #define DEVICE_LED_SELECT_ATTR(SET_ID) \
724 static ssize_t wacom_led##SET_ID##_select_store(struct device *dev, \
725 struct device_attribute *attr, const char *buf, size_t count) \
727 return wacom_led_select_store(dev, SET_ID, buf, count); \
729 static ssize_t wacom_led##SET_ID##_select_show(struct device *dev, \
730 struct device_attribute *attr, char *buf) \
732 struct wacom *wacom = dev_get_drvdata(dev); \
733 return snprintf(buf, 2, "%d\n", wacom->led.select[SET_ID]); \
735 static DEVICE_ATTR(status_led##SET_ID##_select, S_IWUSR | S_IRUSR, \
736 wacom_led##SET_ID##_select_show, \
737 wacom_led##SET_ID##_select_store)
739 DEVICE_LED_SELECT_ATTR(0);
740 DEVICE_LED_SELECT_ATTR(1);
742 static ssize_t wacom_luminance_store(struct wacom *wacom, u8 *dest,
743 const char *buf, size_t count)
748 err = kstrtouint(buf, 10, &value);
752 mutex_lock(&wacom->lock);
754 *dest = value & 0x7f;
755 err = wacom_led_control(wacom);
757 mutex_unlock(&wacom->lock);
759 return err < 0 ? err : count;
762 #define DEVICE_LUMINANCE_ATTR(name, field) \
763 static ssize_t wacom_##name##_luminance_store(struct device *dev, \
764 struct device_attribute *attr, const char *buf, size_t count) \
766 struct wacom *wacom = dev_get_drvdata(dev); \
768 return wacom_luminance_store(wacom, &wacom->led.field, \
771 static DEVICE_ATTR(name##_luminance, S_IWUSR, \
772 NULL, wacom_##name##_luminance_store)
774 DEVICE_LUMINANCE_ATTR(status0, llv);
775 DEVICE_LUMINANCE_ATTR(status1, hlv);
776 DEVICE_LUMINANCE_ATTR(buttons, img_lum);
778 static ssize_t wacom_button_image_store(struct device *dev, int button_id,
779 const char *buf, size_t count)
781 struct wacom *wacom = dev_get_drvdata(dev);
787 mutex_lock(&wacom->lock);
789 err = wacom_led_putimage(wacom, button_id, buf);
791 mutex_unlock(&wacom->lock);
793 return err < 0 ? err : count;
796 #define DEVICE_BTNIMG_ATTR(BUTTON_ID) \
797 static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev, \
798 struct device_attribute *attr, const char *buf, size_t count) \
800 return wacom_button_image_store(dev, BUTTON_ID, buf, count); \
802 static DEVICE_ATTR(button##BUTTON_ID##_rawimg, S_IWUSR, \
803 NULL, wacom_btnimg##BUTTON_ID##_store)
805 DEVICE_BTNIMG_ATTR(0);
806 DEVICE_BTNIMG_ATTR(1);
807 DEVICE_BTNIMG_ATTR(2);
808 DEVICE_BTNIMG_ATTR(3);
809 DEVICE_BTNIMG_ATTR(4);
810 DEVICE_BTNIMG_ATTR(5);
811 DEVICE_BTNIMG_ATTR(6);
812 DEVICE_BTNIMG_ATTR(7);
814 static struct attribute *cintiq_led_attrs[] = {
815 &dev_attr_status_led0_select.attr,
816 &dev_attr_status_led1_select.attr,
820 static struct attribute_group cintiq_led_attr_group = {
822 .attrs = cintiq_led_attrs,
825 static struct attribute *intuos4_led_attrs[] = {
826 &dev_attr_status0_luminance.attr,
827 &dev_attr_status1_luminance.attr,
828 &dev_attr_status_led0_select.attr,
829 &dev_attr_buttons_luminance.attr,
830 &dev_attr_button0_rawimg.attr,
831 &dev_attr_button1_rawimg.attr,
832 &dev_attr_button2_rawimg.attr,
833 &dev_attr_button3_rawimg.attr,
834 &dev_attr_button4_rawimg.attr,
835 &dev_attr_button5_rawimg.attr,
836 &dev_attr_button6_rawimg.attr,
837 &dev_attr_button7_rawimg.attr,
841 static struct attribute_group intuos4_led_attr_group = {
843 .attrs = intuos4_led_attrs,
846 static struct attribute *intuos5_led_attrs[] = {
847 &dev_attr_status0_luminance.attr,
848 &dev_attr_status_led0_select.attr,
852 static struct attribute_group intuos5_led_attr_group = {
854 .attrs = intuos5_led_attrs,
857 static int wacom_initialize_leds(struct wacom *wacom)
861 /* Initialize default values */
862 switch (wacom->wacom_wac.features.type) {
865 wacom->led.select[0] = 0;
866 wacom->led.select[1] = 0;
869 wacom->led.img_lum = 10;
870 error = sysfs_create_group(&wacom->intf->dev.kobj,
871 &intuos4_led_attr_group);
876 wacom->led.select[0] = 0;
877 wacom->led.select[1] = 0;
880 wacom->led.img_lum = 0;
882 error = sysfs_create_group(&wacom->intf->dev.kobj,
883 &cintiq_led_attr_group);
889 wacom->led.select[0] = 0;
890 wacom->led.select[1] = 0;
893 wacom->led.img_lum = 0;
895 error = sysfs_create_group(&wacom->intf->dev.kobj,
896 &intuos5_led_attr_group);
904 dev_err(&wacom->intf->dev,
905 "cannot create sysfs group err: %d\n", error);
908 wacom_led_control(wacom);
913 static void wacom_destroy_leds(struct wacom *wacom)
915 switch (wacom->wacom_wac.features.type) {
918 sysfs_remove_group(&wacom->intf->dev.kobj,
919 &intuos4_led_attr_group);
924 sysfs_remove_group(&wacom->intf->dev.kobj,
925 &cintiq_led_attr_group);
931 sysfs_remove_group(&wacom->intf->dev.kobj,
932 &intuos5_led_attr_group);
937 static enum power_supply_property wacom_battery_props[] = {
938 POWER_SUPPLY_PROP_CAPACITY
941 static int wacom_battery_get_property(struct power_supply *psy,
942 enum power_supply_property psp,
943 union power_supply_propval *val)
945 struct wacom *wacom = container_of(psy, struct wacom, battery);
949 case POWER_SUPPLY_PROP_CAPACITY:
951 wacom->wacom_wac.battery_capacity * 100 / 31;
961 static int wacom_initialize_battery(struct wacom *wacom)
965 if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_MONITOR) {
966 wacom->battery.properties = wacom_battery_props;
967 wacom->battery.num_properties = ARRAY_SIZE(wacom_battery_props);
968 wacom->battery.get_property = wacom_battery_get_property;
969 wacom->battery.name = "wacom_battery";
970 wacom->battery.type = POWER_SUPPLY_TYPE_BATTERY;
971 wacom->battery.use_for_apm = 0;
973 error = power_supply_register(&wacom->usbdev->dev,
980 static void wacom_destroy_battery(struct wacom *wacom)
982 if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_MONITOR)
983 power_supply_unregister(&wacom->battery);
986 static int wacom_register_input(struct wacom *wacom)
988 struct input_dev *input_dev;
989 struct usb_interface *intf = wacom->intf;
990 struct usb_device *dev = interface_to_usbdev(intf);
991 struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
994 input_dev = input_allocate_device();
1000 input_dev->name = wacom_wac->name;
1001 input_dev->dev.parent = &intf->dev;
1002 input_dev->open = wacom_open;
1003 input_dev->close = wacom_close;
1004 usb_to_input_id(dev, &input_dev->id);
1005 input_set_drvdata(input_dev, wacom);
1007 wacom_wac->input = input_dev;
1008 error = wacom_setup_input_capabilities(input_dev, wacom_wac);
1012 error = input_register_device(input_dev);
1019 input_free_device(input_dev);
1020 wacom_wac->input = NULL;
1025 static void wacom_wireless_work(struct work_struct *work)
1027 struct wacom *wacom = container_of(work, struct wacom, work);
1028 struct usb_device *usbdev = wacom->usbdev;
1029 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1032 * Regardless if this is a disconnect or a new tablet,
1033 * remove any existing input devices.
1036 /* Stylus interface */
1037 wacom = usb_get_intfdata(usbdev->config->interface[1]);
1038 if (wacom->wacom_wac.input)
1039 input_unregister_device(wacom->wacom_wac.input);
1040 wacom->wacom_wac.input = NULL;
1042 /* Touch interface */
1043 wacom = usb_get_intfdata(usbdev->config->interface[2]);
1044 if (wacom->wacom_wac.input)
1045 input_unregister_device(wacom->wacom_wac.input);
1046 wacom->wacom_wac.input = NULL;
1048 if (wacom_wac->pid == 0) {
1049 dev_info(&wacom->intf->dev, "wireless tablet disconnected\n");
1051 const struct usb_device_id *id = wacom_ids;
1053 dev_info(&wacom->intf->dev,
1054 "wireless tablet connected with PID %x\n",
1057 while (id->match_flags) {
1058 if (id->idVendor == USB_VENDOR_ID_WACOM &&
1059 id->idProduct == wacom_wac->pid)
1064 if (!id->match_flags) {
1065 dev_info(&wacom->intf->dev,
1066 "ignoring unknown PID.\n");
1070 /* Stylus interface */
1071 wacom = usb_get_intfdata(usbdev->config->interface[1]);
1072 wacom_wac = &wacom->wacom_wac;
1073 wacom_wac->features =
1074 *((struct wacom_features *)id->driver_info);
1075 wacom_wac->features.device_type = BTN_TOOL_PEN;
1076 wacom_register_input(wacom);
1078 /* Touch interface */
1079 wacom = usb_get_intfdata(usbdev->config->interface[2]);
1080 wacom_wac = &wacom->wacom_wac;
1081 wacom_wac->features =
1082 *((struct wacom_features *)id->driver_info);
1083 wacom_wac->features.pktlen = WACOM_PKGLEN_BBTOUCH3;
1084 wacom_wac->features.device_type = BTN_TOOL_FINGER;
1085 wacom_set_phy_from_res(&wacom_wac->features);
1086 wacom_wac->features.x_max = wacom_wac->features.y_max = 4096;
1087 wacom_register_input(wacom);
1091 static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *id)
1093 struct usb_device *dev = interface_to_usbdev(intf);
1094 struct usb_endpoint_descriptor *endpoint;
1095 struct wacom *wacom;
1096 struct wacom_wac *wacom_wac;
1097 struct wacom_features *features;
1100 if (!id->driver_info)
1103 wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
1107 wacom_wac = &wacom->wacom_wac;
1108 wacom_wac->features = *((struct wacom_features *)id->driver_info);
1109 features = &wacom_wac->features;
1110 if (features->pktlen > WACOM_PKGLEN_MAX) {
1115 wacom_wac->data = usb_alloc_coherent(dev, WACOM_PKGLEN_MAX,
1116 GFP_KERNEL, &wacom->data_dma);
1117 if (!wacom_wac->data) {
1122 wacom->irq = usb_alloc_urb(0, GFP_KERNEL);
1128 wacom->usbdev = dev;
1130 mutex_init(&wacom->lock);
1131 INIT_WORK(&wacom->work, wacom_wireless_work);
1132 usb_make_path(dev, wacom->phys, sizeof(wacom->phys));
1133 strlcat(wacom->phys, "/input0", sizeof(wacom->phys));
1135 endpoint = &intf->cur_altsetting->endpoint[0].desc;
1137 /* Retrieve the physical and logical size for touch devices */
1138 error = wacom_retrieve_hid_descriptor(intf, features);
1143 * Intuos5 has no useful data about its touch interface in its
1144 * HID descriptor. If this is the touch interface (wMaxPacketSize
1145 * of WACOM_PKGLEN_BBTOUCH3), override the table values.
1147 if (features->type >= INTUOS5S && features->type <= INTUOS5L) {
1148 if (endpoint->wMaxPacketSize == WACOM_PKGLEN_BBTOUCH3) {
1149 features->device_type = BTN_TOOL_FINGER;
1150 features->pktlen = WACOM_PKGLEN_BBTOUCH3;
1153 (features->x_max * 100) / features->x_resolution;
1155 (features->y_max * 100) / features->y_resolution;
1157 features->x_max = 4096;
1158 features->y_max = 4096;
1160 features->device_type = BTN_TOOL_PEN;
1164 wacom_setup_device_quirks(features);
1166 strlcpy(wacom_wac->name, features->name, sizeof(wacom_wac->name));
1168 if (features->quirks & WACOM_QUIRK_MULTI_INPUT) {
1169 /* Append the device type to the name */
1170 strlcat(wacom_wac->name,
1171 features->device_type == BTN_TOOL_PEN ?
1173 sizeof(wacom_wac->name));
1175 error = wacom_add_shared_data(wacom_wac, dev);
1180 usb_fill_int_urb(wacom->irq, dev,
1181 usb_rcvintpipe(dev, endpoint->bEndpointAddress),
1182 wacom_wac->data, features->pktlen,
1183 wacom_sys_irq, wacom, endpoint->bInterval);
1184 wacom->irq->transfer_dma = wacom->data_dma;
1185 wacom->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1187 error = wacom_initialize_leds(wacom);
1191 error = wacom_initialize_battery(wacom);
1195 if (!(features->quirks & WACOM_QUIRK_NO_INPUT)) {
1196 error = wacom_register_input(wacom);
1201 /* Note that if query fails it is not a hard failure */
1202 wacom_query_tablet_data(intf, features);
1204 usb_set_intfdata(intf, wacom);
1206 if (features->quirks & WACOM_QUIRK_MONITOR) {
1207 if (usb_submit_urb(wacom->irq, GFP_KERNEL))
1213 fail6: wacom_destroy_battery(wacom);
1214 fail5: wacom_destroy_leds(wacom);
1215 fail4: wacom_remove_shared_data(wacom_wac);
1216 fail3: usb_free_urb(wacom->irq);
1217 fail2: usb_free_coherent(dev, WACOM_PKGLEN_MAX, wacom_wac->data, wacom->data_dma);
1218 fail1: kfree(wacom);
1222 static void wacom_disconnect(struct usb_interface *intf)
1224 struct wacom *wacom = usb_get_intfdata(intf);
1226 usb_set_intfdata(intf, NULL);
1228 usb_kill_urb(wacom->irq);
1229 cancel_work_sync(&wacom->work);
1230 if (wacom->wacom_wac.input)
1231 input_unregister_device(wacom->wacom_wac.input);
1232 wacom_destroy_battery(wacom);
1233 wacom_destroy_leds(wacom);
1234 usb_free_urb(wacom->irq);
1235 usb_free_coherent(interface_to_usbdev(intf), WACOM_PKGLEN_MAX,
1236 wacom->wacom_wac.data, wacom->data_dma);
1237 wacom_remove_shared_data(&wacom->wacom_wac);
1241 static int wacom_suspend(struct usb_interface *intf, pm_message_t message)
1243 struct wacom *wacom = usb_get_intfdata(intf);
1245 mutex_lock(&wacom->lock);
1246 usb_kill_urb(wacom->irq);
1247 mutex_unlock(&wacom->lock);
1252 static int wacom_resume(struct usb_interface *intf)
1254 struct wacom *wacom = usb_get_intfdata(intf);
1255 struct wacom_features *features = &wacom->wacom_wac.features;
1258 mutex_lock(&wacom->lock);
1260 /* switch to wacom mode first */
1261 wacom_query_tablet_data(intf, features);
1262 wacom_led_control(wacom);
1264 if ((wacom->open || features->quirks & WACOM_QUIRK_MONITOR)
1265 && usb_submit_urb(wacom->irq, GFP_NOIO) < 0)
1268 mutex_unlock(&wacom->lock);
1273 static int wacom_reset_resume(struct usb_interface *intf)
1275 return wacom_resume(intf);
1278 static struct usb_driver wacom_driver = {
1280 .id_table = wacom_ids,
1281 .probe = wacom_probe,
1282 .disconnect = wacom_disconnect,
1283 .suspend = wacom_suspend,
1284 .resume = wacom_resume,
1285 .reset_resume = wacom_reset_resume,
1286 .supports_autosuspend = 1,
1289 module_usb_driver(wacom_driver);