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 */
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 if (features->type == TABLETPC2FG) {
390 /* need to reset back */
391 features->pktlen = WACOM_PKGLEN_TPC2FG;
394 if (features->type == MTSCREEN)
395 features->pktlen = WACOM_PKGLEN_MTOUCH;
397 if (features->type == BAMBOO_PT) {
398 /* need to reset back */
399 features->pktlen = WACOM_PKGLEN_BBTOUCH;
401 get_unaligned_le16(&report[i + 5]);
403 get_unaligned_le16(&report[i + 8]);
407 get_unaligned_le16(&report[i + 3]);
409 get_unaligned_le16(&report[i + 6]);
410 features->unit = report[i + 9];
411 features->unitExpo = report[i + 11];
415 /* penabled only accepts exact bytes of data */
416 if (features->type == TABLETPC2FG)
417 features->pktlen = WACOM_PKGLEN_GRAPHIRE;
418 features->device_type = BTN_TOOL_PEN;
420 get_unaligned_le16(&report[i + 3]);
427 if (usage == WCM_DESKTOP) {
429 int type = features->type;
431 if (type == TABLETPC2FG || type == MTSCREEN) {
433 get_unaligned_le16(&report[i + 3]);
435 get_unaligned_le16(&report[i + 6]);
437 } else if (type == BAMBOO_PT) {
439 get_unaligned_le16(&report[i + 3]);
441 get_unaligned_le16(&report[i + 6]);
447 get_unaligned_le16(&report[i + 3]);
452 get_unaligned_le16(&report[i + 3]);
458 case HID_USAGE_FINGER:
464 * Requiring Stylus Usage will ignore boot mouse
465 * X/Y values and some cases of invalid Digitizer X/Y
466 * values commonly reported.
468 case HID_USAGE_STYLUS:
473 case HID_USAGE_CONTACTMAX:
474 /* leave touch_max as is if predefined */
475 if (!features->touch_max)
476 wacom_retrieve_report_data(intf, features);
482 case HID_COLLECTION_END:
483 /* reset UsagePage and Finger */
490 case HID_COLLECTION_LOGICAL:
491 i += wacom_parse_logical_collection(&report[i],
505 static int wacom_set_device_mode(struct usb_interface *intf, int report_id, int length, int mode)
507 unsigned char *rep_data;
508 int error = -ENOMEM, limit = 0;
510 rep_data = kzalloc(length, GFP_KERNEL);
514 rep_data[0] = report_id;
518 error = wacom_set_report(intf, WAC_HID_FEATURE_REPORT,
519 report_id, rep_data, length, 1);
521 error = wacom_get_report(intf, WAC_HID_FEATURE_REPORT,
522 report_id, rep_data, length, 1);
523 } while ((error < 0 || rep_data[1] != mode) && limit++ < WAC_MSG_RETRIES);
527 return error < 0 ? error : 0;
531 * Switch the tablet into its most-capable mode. Wacom tablets are
532 * typically configured to power-up in a mode which sends mouse-like
533 * reports to the OS. To get absolute position, pressure data, etc.
534 * from the tablet, it is necessary to switch the tablet out of this
535 * mode and into one which sends the full range of tablet data.
537 static int wacom_query_tablet_data(struct usb_interface *intf, struct wacom_features *features)
539 if (features->device_type == BTN_TOOL_FINGER) {
540 if (features->type > TABLETPC) {
541 /* MT Tablet PC touch */
542 return wacom_set_device_mode(intf, 3, 4, 4);
544 } else if (features->device_type == BTN_TOOL_PEN) {
545 if (features->type <= BAMBOO_PT && features->type != WIRELESS) {
546 return wacom_set_device_mode(intf, 2, 2, 2);
553 static int wacom_retrieve_hid_descriptor(struct usb_interface *intf,
554 struct wacom_features *features)
557 struct usb_host_interface *interface = intf->cur_altsetting;
558 struct hid_descriptor *hid_desc;
560 /* default features */
561 features->device_type = BTN_TOOL_PEN;
562 features->x_fuzz = 4;
563 features->y_fuzz = 4;
564 features->pressure_fuzz = 0;
565 features->distance_fuzz = 0;
568 * The wireless device HID is basic and layout conflicts with
569 * other tablets (monitor and touch interface can look like pen).
570 * Skip the query for this type and modify defaults based on
573 if (features->type == WIRELESS) {
574 if (intf->cur_altsetting->desc.bInterfaceNumber == 0) {
575 features->device_type = 0;
576 } else if (intf->cur_altsetting->desc.bInterfaceNumber == 2) {
577 features->device_type = BTN_TOOL_FINGER;
578 features->pktlen = WACOM_PKGLEN_BBTOUCH3;
582 /* only devices that support touch need to retrieve the info */
583 if (features->type < BAMBOO_PT) {
587 error = usb_get_extra_descriptor(interface, HID_DEVICET_HID, &hid_desc);
589 error = usb_get_extra_descriptor(&interface->endpoint[0],
590 HID_DEVICET_REPORT, &hid_desc);
593 "can not retrieve extra class descriptor\n");
597 error = wacom_parse_hid(intf, hid_desc, features);
600 wacom_fix_phy_from_hid(features);
606 struct wacom_usbdev_data {
607 struct list_head list;
609 struct usb_device *dev;
610 struct wacom_shared shared;
613 static LIST_HEAD(wacom_udev_list);
614 static DEFINE_MUTEX(wacom_udev_list_lock);
616 static struct wacom_usbdev_data *wacom_get_usbdev_data(struct usb_device *dev)
618 struct wacom_usbdev_data *data;
620 list_for_each_entry(data, &wacom_udev_list, list) {
621 if (data->dev == dev) {
622 kref_get(&data->kref);
630 static int wacom_add_shared_data(struct wacom_wac *wacom,
631 struct usb_device *dev)
633 struct wacom_usbdev_data *data;
636 mutex_lock(&wacom_udev_list_lock);
638 data = wacom_get_usbdev_data(dev);
640 data = kzalloc(sizeof(struct wacom_usbdev_data), GFP_KERNEL);
646 kref_init(&data->kref);
648 list_add_tail(&data->list, &wacom_udev_list);
651 wacom->shared = &data->shared;
654 mutex_unlock(&wacom_udev_list_lock);
658 static void wacom_release_shared_data(struct kref *kref)
660 struct wacom_usbdev_data *data =
661 container_of(kref, struct wacom_usbdev_data, kref);
663 mutex_lock(&wacom_udev_list_lock);
664 list_del(&data->list);
665 mutex_unlock(&wacom_udev_list_lock);
670 static void wacom_remove_shared_data(struct wacom_wac *wacom)
672 struct wacom_usbdev_data *data;
675 data = container_of(wacom->shared, struct wacom_usbdev_data, shared);
676 kref_put(&data->kref, wacom_release_shared_data);
677 wacom->shared = NULL;
681 static int wacom_led_control(struct wacom *wacom)
686 buf = kzalloc(9, GFP_KERNEL);
690 if (wacom->wacom_wac.features.type >= INTUOS5S &&
691 wacom->wacom_wac.features.type <= INTUOS5L) {
693 * Touch Ring and crop mark LED luminance may take on
694 * one of four values:
695 * 0 = Low; 1 = Medium; 2 = High; 3 = Off
697 int ring_led = wacom->led.select[0] & 0x03;
698 int ring_lum = (((wacom->led.llv & 0x60) >> 5) - 1) & 0x03;
701 buf[0] = WAC_CMD_LED_CONTROL;
702 buf[1] = (crop_lum << 4) | (ring_lum << 2) | (ring_led);
705 int led = wacom->led.select[0] | 0x4;
707 if (wacom->wacom_wac.features.type == WACOM_21UX2 ||
708 wacom->wacom_wac.features.type == WACOM_24HD)
709 led |= (wacom->led.select[1] << 4) | 0x40;
711 buf[0] = WAC_CMD_LED_CONTROL;
713 buf[2] = wacom->led.llv;
714 buf[3] = wacom->led.hlv;
715 buf[4] = wacom->led.img_lum;
718 retval = wacom_set_report(wacom->intf, 0x03, WAC_CMD_LED_CONTROL,
719 buf, 9, WAC_CMD_RETRIES);
725 static int wacom_led_putimage(struct wacom *wacom, int button_id, const void *img)
730 buf = kzalloc(259, GFP_KERNEL);
734 /* Send 'start' command */
735 buf[0] = WAC_CMD_ICON_START;
737 retval = wacom_set_report(wacom->intf, 0x03, WAC_CMD_ICON_START,
738 buf, 2, WAC_CMD_RETRIES);
742 buf[0] = WAC_CMD_ICON_XFER;
743 buf[1] = button_id & 0x07;
744 for (i = 0; i < 4; i++) {
746 memcpy(buf + 3, img + i * 256, 256);
748 retval = wacom_set_report(wacom->intf, 0x03, WAC_CMD_ICON_XFER,
749 buf, 259, WAC_CMD_RETRIES);
755 buf[0] = WAC_CMD_ICON_START;
757 wacom_set_report(wacom->intf, 0x03, WAC_CMD_ICON_START,
758 buf, 2, WAC_CMD_RETRIES);
765 static ssize_t wacom_led_select_store(struct device *dev, int set_id,
766 const char *buf, size_t count)
768 struct wacom *wacom = dev_get_drvdata(dev);
772 err = kstrtouint(buf, 10, &id);
776 mutex_lock(&wacom->lock);
778 wacom->led.select[set_id] = id & 0x3;
779 err = wacom_led_control(wacom);
781 mutex_unlock(&wacom->lock);
783 return err < 0 ? err : count;
786 #define DEVICE_LED_SELECT_ATTR(SET_ID) \
787 static ssize_t wacom_led##SET_ID##_select_store(struct device *dev, \
788 struct device_attribute *attr, const char *buf, size_t count) \
790 return wacom_led_select_store(dev, SET_ID, buf, count); \
792 static ssize_t wacom_led##SET_ID##_select_show(struct device *dev, \
793 struct device_attribute *attr, char *buf) \
795 struct wacom *wacom = dev_get_drvdata(dev); \
796 return snprintf(buf, 2, "%d\n", wacom->led.select[SET_ID]); \
798 static DEVICE_ATTR(status_led##SET_ID##_select, S_IWUSR | S_IRUSR, \
799 wacom_led##SET_ID##_select_show, \
800 wacom_led##SET_ID##_select_store)
802 DEVICE_LED_SELECT_ATTR(0);
803 DEVICE_LED_SELECT_ATTR(1);
805 static ssize_t wacom_luminance_store(struct wacom *wacom, u8 *dest,
806 const char *buf, size_t count)
811 err = kstrtouint(buf, 10, &value);
815 mutex_lock(&wacom->lock);
817 *dest = value & 0x7f;
818 err = wacom_led_control(wacom);
820 mutex_unlock(&wacom->lock);
822 return err < 0 ? err : count;
825 #define DEVICE_LUMINANCE_ATTR(name, field) \
826 static ssize_t wacom_##name##_luminance_store(struct device *dev, \
827 struct device_attribute *attr, const char *buf, size_t count) \
829 struct wacom *wacom = dev_get_drvdata(dev); \
831 return wacom_luminance_store(wacom, &wacom->led.field, \
834 static DEVICE_ATTR(name##_luminance, S_IWUSR, \
835 NULL, wacom_##name##_luminance_store)
837 DEVICE_LUMINANCE_ATTR(status0, llv);
838 DEVICE_LUMINANCE_ATTR(status1, hlv);
839 DEVICE_LUMINANCE_ATTR(buttons, img_lum);
841 static ssize_t wacom_button_image_store(struct device *dev, int button_id,
842 const char *buf, size_t count)
844 struct wacom *wacom = dev_get_drvdata(dev);
850 mutex_lock(&wacom->lock);
852 err = wacom_led_putimage(wacom, button_id, buf);
854 mutex_unlock(&wacom->lock);
856 return err < 0 ? err : count;
859 #define DEVICE_BTNIMG_ATTR(BUTTON_ID) \
860 static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev, \
861 struct device_attribute *attr, const char *buf, size_t count) \
863 return wacom_button_image_store(dev, BUTTON_ID, buf, count); \
865 static DEVICE_ATTR(button##BUTTON_ID##_rawimg, S_IWUSR, \
866 NULL, wacom_btnimg##BUTTON_ID##_store)
868 DEVICE_BTNIMG_ATTR(0);
869 DEVICE_BTNIMG_ATTR(1);
870 DEVICE_BTNIMG_ATTR(2);
871 DEVICE_BTNIMG_ATTR(3);
872 DEVICE_BTNIMG_ATTR(4);
873 DEVICE_BTNIMG_ATTR(5);
874 DEVICE_BTNIMG_ATTR(6);
875 DEVICE_BTNIMG_ATTR(7);
877 static struct attribute *cintiq_led_attrs[] = {
878 &dev_attr_status_led0_select.attr,
879 &dev_attr_status_led1_select.attr,
883 static struct attribute_group cintiq_led_attr_group = {
885 .attrs = cintiq_led_attrs,
888 static struct attribute *intuos4_led_attrs[] = {
889 &dev_attr_status0_luminance.attr,
890 &dev_attr_status1_luminance.attr,
891 &dev_attr_status_led0_select.attr,
892 &dev_attr_buttons_luminance.attr,
893 &dev_attr_button0_rawimg.attr,
894 &dev_attr_button1_rawimg.attr,
895 &dev_attr_button2_rawimg.attr,
896 &dev_attr_button3_rawimg.attr,
897 &dev_attr_button4_rawimg.attr,
898 &dev_attr_button5_rawimg.attr,
899 &dev_attr_button6_rawimg.attr,
900 &dev_attr_button7_rawimg.attr,
904 static struct attribute_group intuos4_led_attr_group = {
906 .attrs = intuos4_led_attrs,
909 static struct attribute *intuos5_led_attrs[] = {
910 &dev_attr_status0_luminance.attr,
911 &dev_attr_status_led0_select.attr,
915 static struct attribute_group intuos5_led_attr_group = {
917 .attrs = intuos5_led_attrs,
920 static int wacom_initialize_leds(struct wacom *wacom)
924 /* Initialize default values */
925 switch (wacom->wacom_wac.features.type) {
929 wacom->led.select[0] = 0;
930 wacom->led.select[1] = 0;
933 wacom->led.img_lum = 10;
934 error = sysfs_create_group(&wacom->intf->dev.kobj,
935 &intuos4_led_attr_group);
940 wacom->led.select[0] = 0;
941 wacom->led.select[1] = 0;
944 wacom->led.img_lum = 0;
946 error = sysfs_create_group(&wacom->intf->dev.kobj,
947 &cintiq_led_attr_group);
953 wacom->led.select[0] = 0;
954 wacom->led.select[1] = 0;
957 wacom->led.img_lum = 0;
959 error = sysfs_create_group(&wacom->intf->dev.kobj,
960 &intuos5_led_attr_group);
968 dev_err(&wacom->intf->dev,
969 "cannot create sysfs group err: %d\n", error);
972 wacom_led_control(wacom);
977 static void wacom_destroy_leds(struct wacom *wacom)
979 switch (wacom->wacom_wac.features.type) {
983 sysfs_remove_group(&wacom->intf->dev.kobj,
984 &intuos4_led_attr_group);
989 sysfs_remove_group(&wacom->intf->dev.kobj,
990 &cintiq_led_attr_group);
996 sysfs_remove_group(&wacom->intf->dev.kobj,
997 &intuos5_led_attr_group);
1002 static enum power_supply_property wacom_battery_props[] = {
1003 POWER_SUPPLY_PROP_CAPACITY
1006 static int wacom_battery_get_property(struct power_supply *psy,
1007 enum power_supply_property psp,
1008 union power_supply_propval *val)
1010 struct wacom *wacom = container_of(psy, struct wacom, battery);
1014 case POWER_SUPPLY_PROP_CAPACITY:
1016 wacom->wacom_wac.battery_capacity * 100 / 31;
1026 static int wacom_initialize_battery(struct wacom *wacom)
1030 if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_MONITOR) {
1031 wacom->battery.properties = wacom_battery_props;
1032 wacom->battery.num_properties = ARRAY_SIZE(wacom_battery_props);
1033 wacom->battery.get_property = wacom_battery_get_property;
1034 wacom->battery.name = "wacom_battery";
1035 wacom->battery.type = POWER_SUPPLY_TYPE_BATTERY;
1036 wacom->battery.use_for_apm = 0;
1038 error = power_supply_register(&wacom->usbdev->dev,
1042 power_supply_powers(&wacom->battery,
1043 &wacom->usbdev->dev);
1049 static void wacom_destroy_battery(struct wacom *wacom)
1051 if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_MONITOR &&
1052 wacom->battery.dev) {
1053 power_supply_unregister(&wacom->battery);
1054 wacom->battery.dev = NULL;
1058 static int wacom_register_input(struct wacom *wacom)
1060 struct input_dev *input_dev;
1061 struct usb_interface *intf = wacom->intf;
1062 struct usb_device *dev = interface_to_usbdev(intf);
1063 struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1066 input_dev = input_allocate_device();
1072 input_dev->name = wacom_wac->name;
1073 input_dev->dev.parent = &intf->dev;
1074 input_dev->open = wacom_open;
1075 input_dev->close = wacom_close;
1076 usb_to_input_id(dev, &input_dev->id);
1077 input_set_drvdata(input_dev, wacom);
1079 wacom_wac->input = input_dev;
1080 error = wacom_setup_input_capabilities(input_dev, wacom_wac);
1084 error = input_register_device(input_dev);
1091 input_free_device(input_dev);
1092 wacom_wac->input = NULL;
1097 static void wacom_wireless_work(struct work_struct *work)
1099 struct wacom *wacom = container_of(work, struct wacom, work);
1100 struct usb_device *usbdev = wacom->usbdev;
1101 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1102 struct wacom *wacom1, *wacom2;
1103 struct wacom_wac *wacom_wac1, *wacom_wac2;
1107 * Regardless if this is a disconnect or a new tablet,
1108 * remove any existing input and battery devices.
1111 wacom_destroy_battery(wacom);
1113 /* Stylus interface */
1114 wacom1 = usb_get_intfdata(usbdev->config->interface[1]);
1115 wacom_wac1 = &(wacom1->wacom_wac);
1116 if (wacom_wac1->input)
1117 input_unregister_device(wacom_wac1->input);
1118 wacom_wac1->input = NULL;
1120 /* Touch interface */
1121 wacom2 = usb_get_intfdata(usbdev->config->interface[2]);
1122 wacom_wac2 = &(wacom2->wacom_wac);
1123 if (wacom_wac2->input)
1124 input_unregister_device(wacom_wac2->input);
1125 wacom_wac2->input = NULL;
1127 if (wacom_wac->pid == 0) {
1128 dev_info(&wacom->intf->dev, "wireless tablet disconnected\n");
1130 const struct usb_device_id *id = wacom_ids;
1132 dev_info(&wacom->intf->dev,
1133 "wireless tablet connected with PID %x\n",
1136 while (id->match_flags) {
1137 if (id->idVendor == USB_VENDOR_ID_WACOM &&
1138 id->idProduct == wacom_wac->pid)
1143 if (!id->match_flags) {
1144 dev_info(&wacom->intf->dev,
1145 "ignoring unknown PID.\n");
1149 /* Stylus interface */
1150 wacom_wac1->features =
1151 *((struct wacom_features *)id->driver_info);
1152 wacom_wac1->features.device_type = BTN_TOOL_PEN;
1153 error = wacom_register_input(wacom1);
1157 /* Touch interface */
1158 wacom_wac2->features =
1159 *((struct wacom_features *)id->driver_info);
1160 wacom_wac2->features.pktlen = WACOM_PKGLEN_BBTOUCH3;
1161 wacom_wac2->features.device_type = BTN_TOOL_FINGER;
1162 wacom_set_phy_from_res(&wacom_wac2->features);
1163 wacom_wac2->features.x_max = wacom_wac2->features.y_max = 4096;
1164 error = wacom_register_input(wacom2);
1168 error = wacom_initialize_battery(wacom);
1176 input_unregister_device(wacom_wac2->input);
1177 wacom_wac2->input = NULL;
1179 input_unregister_device(wacom_wac1->input);
1180 wacom_wac1->input = NULL;
1185 static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *id)
1187 struct usb_device *dev = interface_to_usbdev(intf);
1188 struct usb_endpoint_descriptor *endpoint;
1189 struct wacom *wacom;
1190 struct wacom_wac *wacom_wac;
1191 struct wacom_features *features;
1194 if (!id->driver_info)
1197 wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
1201 wacom_wac = &wacom->wacom_wac;
1202 wacom_wac->features = *((struct wacom_features *)id->driver_info);
1203 features = &wacom_wac->features;
1204 if (features->pktlen > WACOM_PKGLEN_MAX) {
1209 wacom_wac->data = usb_alloc_coherent(dev, WACOM_PKGLEN_MAX,
1210 GFP_KERNEL, &wacom->data_dma);
1211 if (!wacom_wac->data) {
1216 wacom->irq = usb_alloc_urb(0, GFP_KERNEL);
1222 wacom->usbdev = dev;
1224 mutex_init(&wacom->lock);
1225 INIT_WORK(&wacom->work, wacom_wireless_work);
1226 usb_make_path(dev, wacom->phys, sizeof(wacom->phys));
1227 strlcat(wacom->phys, "/input0", sizeof(wacom->phys));
1229 endpoint = &intf->cur_altsetting->endpoint[0].desc;
1231 /* Retrieve the physical and logical size for touch devices */
1232 error = wacom_retrieve_hid_descriptor(intf, features);
1237 * Intuos5 has no useful data about its touch interface in its
1238 * HID descriptor. If this is the touch interface (wMaxPacketSize
1239 * of WACOM_PKGLEN_BBTOUCH3), override the table values.
1241 if (features->type >= INTUOS5S && features->type <= INTUOS5L) {
1242 if (endpoint->wMaxPacketSize == WACOM_PKGLEN_BBTOUCH3) {
1243 features->device_type = BTN_TOOL_FINGER;
1244 features->pktlen = WACOM_PKGLEN_BBTOUCH3;
1246 wacom_set_phy_from_res(features);
1248 features->x_max = 4096;
1249 features->y_max = 4096;
1251 features->device_type = BTN_TOOL_PEN;
1255 wacom_setup_device_quirks(features);
1257 strlcpy(wacom_wac->name, features->name, sizeof(wacom_wac->name));
1259 if (features->quirks & WACOM_QUIRK_MULTI_INPUT) {
1260 /* Append the device type to the name */
1261 strlcat(wacom_wac->name,
1262 features->device_type == BTN_TOOL_PEN ?
1264 sizeof(wacom_wac->name));
1266 error = wacom_add_shared_data(wacom_wac, dev);
1271 usb_fill_int_urb(wacom->irq, dev,
1272 usb_rcvintpipe(dev, endpoint->bEndpointAddress),
1273 wacom_wac->data, features->pktlen,
1274 wacom_sys_irq, wacom, endpoint->bInterval);
1275 wacom->irq->transfer_dma = wacom->data_dma;
1276 wacom->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1278 error = wacom_initialize_leds(wacom);
1282 if (!(features->quirks & WACOM_QUIRK_NO_INPUT)) {
1283 error = wacom_register_input(wacom);
1288 /* Note that if query fails it is not a hard failure */
1289 wacom_query_tablet_data(intf, features);
1291 usb_set_intfdata(intf, wacom);
1293 if (features->quirks & WACOM_QUIRK_MONITOR) {
1294 if (usb_submit_urb(wacom->irq, GFP_KERNEL))
1300 fail5: wacom_destroy_leds(wacom);
1301 fail4: wacom_remove_shared_data(wacom_wac);
1302 fail3: usb_free_urb(wacom->irq);
1303 fail2: usb_free_coherent(dev, WACOM_PKGLEN_MAX, wacom_wac->data, wacom->data_dma);
1304 fail1: kfree(wacom);
1308 static void wacom_disconnect(struct usb_interface *intf)
1310 struct wacom *wacom = usb_get_intfdata(intf);
1312 usb_set_intfdata(intf, NULL);
1314 usb_kill_urb(wacom->irq);
1315 cancel_work_sync(&wacom->work);
1316 if (wacom->wacom_wac.input)
1317 input_unregister_device(wacom->wacom_wac.input);
1318 wacom_destroy_battery(wacom);
1319 wacom_destroy_leds(wacom);
1320 usb_free_urb(wacom->irq);
1321 usb_free_coherent(interface_to_usbdev(intf), WACOM_PKGLEN_MAX,
1322 wacom->wacom_wac.data, wacom->data_dma);
1323 wacom_remove_shared_data(&wacom->wacom_wac);
1327 static int wacom_suspend(struct usb_interface *intf, pm_message_t message)
1329 struct wacom *wacom = usb_get_intfdata(intf);
1331 mutex_lock(&wacom->lock);
1332 usb_kill_urb(wacom->irq);
1333 mutex_unlock(&wacom->lock);
1338 static int wacom_resume(struct usb_interface *intf)
1340 struct wacom *wacom = usb_get_intfdata(intf);
1341 struct wacom_features *features = &wacom->wacom_wac.features;
1344 mutex_lock(&wacom->lock);
1346 /* switch to wacom mode first */
1347 wacom_query_tablet_data(intf, features);
1348 wacom_led_control(wacom);
1350 if ((wacom->open || features->quirks & WACOM_QUIRK_MONITOR)
1351 && usb_submit_urb(wacom->irq, GFP_NOIO) < 0)
1354 mutex_unlock(&wacom->lock);
1359 static int wacom_reset_resume(struct usb_interface *intf)
1361 return wacom_resume(intf);
1364 static struct usb_driver wacom_driver = {
1366 .id_table = wacom_ids,
1367 .probe = wacom_probe,
1368 .disconnect = wacom_disconnect,
1369 .suspend = wacom_suspend,
1370 .resume = wacom_resume,
1371 .reset_resume = wacom_reset_resume,
1372 .supports_autosuspend = 1,
1375 module_usb_driver(wacom_driver);