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"
16 #include <linux/hid.h>
18 #define WAC_MSG_RETRIES 5
20 #define WAC_CMD_LED_CONTROL 0x20
21 #define WAC_CMD_ICON_START 0x21
22 #define WAC_CMD_ICON_XFER 0x23
23 #define WAC_CMD_ICON_BT_XFER 0x26
24 #define WAC_CMD_RETRIES 10
26 static int wacom_get_report(struct hid_device *hdev, u8 type, u8 id,
27 void *buf, size_t size, unsigned int retries)
32 retval = hid_hw_raw_request(hdev, id, buf, size, type,
34 } while ((retval == -ETIMEDOUT || retval == -EPIPE) && --retries);
39 static int wacom_set_report(struct hid_device *hdev, u8 type, u8 *buf,
40 size_t size, unsigned int retries)
45 retval = hid_hw_raw_request(hdev, buf[0], buf, size, type,
47 } while ((retval == -ETIMEDOUT || retval == -EPIPE) && --retries);
52 static int wacom_raw_event(struct hid_device *hdev, struct hid_report *report,
53 u8 *raw_data, int size)
55 struct wacom *wacom = hid_get_drvdata(hdev);
57 if (size > WACOM_PKGLEN_MAX)
60 memcpy(wacom->wacom_wac.data, raw_data, size);
62 wacom_wac_irq(&wacom->wacom_wac, size);
67 static int wacom_open(struct input_dev *dev)
69 struct wacom *wacom = input_get_drvdata(dev);
72 mutex_lock(&wacom->lock);
73 retval = hid_hw_open(wacom->hdev);
74 mutex_unlock(&wacom->lock);
79 static void wacom_close(struct input_dev *dev)
81 struct wacom *wacom = input_get_drvdata(dev);
83 mutex_lock(&wacom->lock);
84 hid_hw_close(wacom->hdev);
85 mutex_unlock(&wacom->lock);
89 * Calculate the resolution of the X or Y axis using hidinput_calc_abs_res.
91 static int wacom_calc_hid_res(int logical_extents, int physical_extents,
92 unsigned unit, int exponent)
94 struct hid_field field = {
95 .logical_maximum = logical_extents,
96 .physical_maximum = physical_extents,
98 .unit_exponent = exponent,
101 return hidinput_calc_abs_res(&field, ABS_X);
104 static void wacom_feature_mapping(struct hid_device *hdev,
105 struct hid_field *field, struct hid_usage *usage)
107 struct wacom *wacom = hid_get_drvdata(hdev);
108 struct wacom_features *features = &wacom->wacom_wac.features;
110 switch (usage->hid) {
111 case HID_DG_CONTACTMAX:
112 /* leave touch_max as is if predefined */
113 if (!features->touch_max)
114 features->touch_max = field->value[0];
120 * Interface Descriptor of wacom devices can be incomplete and
121 * inconsistent so wacom_features table is used to store stylus
122 * device's packet lengths, various maximum values, and tablet
123 * resolution based on product ID's.
125 * For devices that contain 2 interfaces, wacom_features table is
126 * inaccurate for the touch interface. Since the Interface Descriptor
127 * for touch interfaces has pretty complete data, this function exists
128 * to query tablet for this missing information instead of hard coding in
129 * an additional table.
131 * A typical Interface Descriptor for a stylus will contain a
132 * boot mouse application collection that is not of interest and this
133 * function will ignore it.
135 * It also contains a digitizer application collection that also is not
136 * of interest since any information it contains would be duplicate
137 * of what is in wacom_features. Usually it defines a report of an array
138 * of bytes that could be used as max length of the stylus packet returned.
139 * If it happens to define a Digitizer-Stylus Physical Collection then
140 * the X and Y logical values contain valid data but it is ignored.
142 * A typical Interface Descriptor for a touch interface will contain a
143 * Digitizer-Finger Physical Collection which will define both logical
144 * X/Y maximum as well as the physical size of tablet. Since touch
145 * interfaces haven't supported pressure or distance, this is enough
146 * information to override invalid values in the wacom_features table.
148 * Intuos5 touch interface and 3rd gen Bamboo Touch do not contain useful
149 * data. We deal with them after returning from this function.
151 static void wacom_usage_mapping(struct hid_device *hdev,
152 struct hid_field *field, struct hid_usage *usage)
154 struct wacom *wacom = hid_get_drvdata(hdev);
155 struct wacom_features *features = &wacom->wacom_wac.features;
156 bool finger = (field->logical == HID_DG_FINGER) ||
157 (field->physical == HID_DG_FINGER);
158 bool pen = (field->logical == HID_DG_STYLUS) ||
159 (field->physical == HID_DG_STYLUS);
162 * Requiring Stylus Usage will ignore boot mouse
163 * X/Y values and some cases of invalid Digitizer X/Y
164 * values commonly reported.
169 if (finger && !features->touch_max)
170 /* touch device at least supports one touch point */
171 features->touch_max = 1;
173 switch (usage->hid) {
175 features->x_max = field->logical_maximum;
177 features->device_type = BTN_TOOL_FINGER;
178 features->x_phy = field->physical_maximum;
179 if (features->type != BAMBOO_PT) {
180 features->unit = field->unit;
181 features->unitExpo = field->unit_exponent;
184 features->device_type = BTN_TOOL_PEN;
188 features->y_max = field->logical_maximum;
190 features->y_phy = field->physical_maximum;
191 if (features->type != BAMBOO_PT) {
192 features->unit = field->unit;
193 features->unitExpo = field->unit_exponent;
197 case HID_DG_TIPPRESSURE:
199 features->pressure_max = field->logical_maximum;
204 static void wacom_parse_hid(struct hid_device *hdev,
205 struct wacom_features *features)
207 struct hid_report_enum *rep_enum;
208 struct hid_report *hreport;
211 /* check features first */
212 rep_enum = &hdev->report_enum[HID_FEATURE_REPORT];
213 list_for_each_entry(hreport, &rep_enum->report_list, list) {
214 for (i = 0; i < hreport->maxfield; i++) {
215 /* Ignore if report count is out of bounds. */
216 if (hreport->field[i]->report_count < 1)
219 for (j = 0; j < hreport->field[i]->maxusage; j++) {
220 wacom_feature_mapping(hdev, hreport->field[i],
221 hreport->field[i]->usage + j);
226 /* now check the input usages */
227 rep_enum = &hdev->report_enum[HID_INPUT_REPORT];
228 list_for_each_entry(hreport, &rep_enum->report_list, list) {
230 if (!hreport->maxfield)
233 for (i = 0; i < hreport->maxfield; i++)
234 for (j = 0; j < hreport->field[i]->maxusage; j++)
235 wacom_usage_mapping(hdev, hreport->field[i],
236 hreport->field[i]->usage + j);
240 static int wacom_set_device_mode(struct hid_device *hdev, int report_id,
241 int length, int mode)
243 unsigned char *rep_data;
244 int error = -ENOMEM, limit = 0;
246 rep_data = kzalloc(length, GFP_KERNEL);
251 rep_data[0] = report_id;
254 error = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data,
257 error = wacom_get_report(hdev, HID_FEATURE_REPORT,
258 report_id, rep_data, length, 1);
259 } while ((error < 0 || rep_data[1] != mode) && limit++ < WAC_MSG_RETRIES);
263 return error < 0 ? error : 0;
266 static int wacom_bt_query_tablet_data(struct hid_device *hdev, u8 speed,
267 struct wacom_features *features)
269 struct wacom *wacom = hid_get_drvdata(hdev);
273 switch (features->type) {
277 ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,
281 rep_data[0] = speed == 0 ? 0x05 : 0x06;
284 ret = wacom_set_report(hdev, HID_FEATURE_REPORT,
288 wacom->wacom_wac.bt_high_speed = speed;
294 * Note that if the raw queries fail, it's not a hard failure
295 * and it is safe to continue
297 hid_warn(hdev, "failed to poke device, command %d, err %d\n",
302 wacom->wacom_wac.bt_features &= ~0x20;
304 wacom->wacom_wac.bt_features |= 0x20;
307 rep_data[1] = wacom->wacom_wac.bt_features;
309 ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,
312 wacom->wacom_wac.bt_high_speed = speed;
320 * Switch the tablet into its most-capable mode. Wacom tablets are
321 * typically configured to power-up in a mode which sends mouse-like
322 * reports to the OS. To get absolute position, pressure data, etc.
323 * from the tablet, it is necessary to switch the tablet out of this
324 * mode and into one which sends the full range of tablet data.
326 static int wacom_query_tablet_data(struct hid_device *hdev,
327 struct wacom_features *features)
329 if (hdev->bus == BUS_BLUETOOTH)
330 return wacom_bt_query_tablet_data(hdev, 1, features);
332 if (features->device_type == BTN_TOOL_FINGER) {
333 if (features->type > TABLETPC) {
334 /* MT Tablet PC touch */
335 return wacom_set_device_mode(hdev, 3, 4, 4);
337 else if (features->type == WACOM_24HDT || features->type == CINTIQ_HYBRID) {
338 return wacom_set_device_mode(hdev, 18, 3, 2);
340 } else if (features->device_type == BTN_TOOL_PEN) {
341 if (features->type <= BAMBOO_PT && features->type != WIRELESS) {
342 return wacom_set_device_mode(hdev, 2, 2, 2);
349 static void wacom_retrieve_hid_descriptor(struct hid_device *hdev,
350 struct wacom_features *features)
352 struct wacom *wacom = hid_get_drvdata(hdev);
353 struct usb_interface *intf = wacom->intf;
355 /* default features */
356 features->device_type = BTN_TOOL_PEN;
357 features->x_fuzz = 4;
358 features->y_fuzz = 4;
359 features->pressure_fuzz = 0;
360 features->distance_fuzz = 0;
363 * The wireless device HID is basic and layout conflicts with
364 * other tablets (monitor and touch interface can look like pen).
365 * Skip the query for this type and modify defaults based on
368 if (features->type == WIRELESS) {
369 if (intf->cur_altsetting->desc.bInterfaceNumber == 0) {
370 features->device_type = 0;
371 } else if (intf->cur_altsetting->desc.bInterfaceNumber == 2) {
372 features->device_type = BTN_TOOL_FINGER;
373 features->pktlen = WACOM_PKGLEN_BBTOUCH3;
377 /* only devices that support touch need to retrieve the info */
378 if (features->type < BAMBOO_PT)
381 wacom_parse_hid(hdev, features);
384 struct wacom_hdev_data {
385 struct list_head list;
387 struct hid_device *dev;
388 struct wacom_shared shared;
391 static LIST_HEAD(wacom_udev_list);
392 static DEFINE_MUTEX(wacom_udev_list_lock);
394 static bool wacom_are_sibling(struct hid_device *hdev,
395 struct hid_device *sibling)
397 struct wacom *wacom = hid_get_drvdata(hdev);
398 struct wacom_features *features = &wacom->wacom_wac.features;
399 int vid = features->oVid;
400 int pid = features->oPid;
403 if (vid == 0 && pid == 0) {
408 if (vid != sibling->vendor || pid != sibling->product)
411 /* Compare the physical path. */
412 n1 = strrchr(hdev->phys, '.') - hdev->phys;
413 n2 = strrchr(sibling->phys, '.') - sibling->phys;
414 if (n1 != n2 || n1 <= 0 || n2 <= 0)
417 return !strncmp(hdev->phys, sibling->phys, n1);
420 static struct wacom_hdev_data *wacom_get_hdev_data(struct hid_device *hdev)
422 struct wacom_hdev_data *data;
424 list_for_each_entry(data, &wacom_udev_list, list) {
425 if (wacom_are_sibling(hdev, data->dev)) {
426 kref_get(&data->kref);
434 static int wacom_add_shared_data(struct hid_device *hdev)
436 struct wacom *wacom = hid_get_drvdata(hdev);
437 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
438 struct wacom_hdev_data *data;
441 mutex_lock(&wacom_udev_list_lock);
443 data = wacom_get_hdev_data(hdev);
445 data = kzalloc(sizeof(struct wacom_hdev_data), GFP_KERNEL);
451 kref_init(&data->kref);
453 list_add_tail(&data->list, &wacom_udev_list);
456 wacom_wac->shared = &data->shared;
459 mutex_unlock(&wacom_udev_list_lock);
463 static void wacom_release_shared_data(struct kref *kref)
465 struct wacom_hdev_data *data =
466 container_of(kref, struct wacom_hdev_data, kref);
468 mutex_lock(&wacom_udev_list_lock);
469 list_del(&data->list);
470 mutex_unlock(&wacom_udev_list_lock);
475 static void wacom_remove_shared_data(struct wacom_wac *wacom)
477 struct wacom_hdev_data *data;
480 data = container_of(wacom->shared, struct wacom_hdev_data, shared);
481 kref_put(&data->kref, wacom_release_shared_data);
482 wacom->shared = NULL;
486 static int wacom_led_control(struct wacom *wacom)
491 buf = kzalloc(9, GFP_KERNEL);
495 if (wacom->wacom_wac.features.type >= INTUOS5S &&
496 wacom->wacom_wac.features.type <= INTUOSPL) {
498 * Touch Ring and crop mark LED luminance may take on
499 * one of four values:
500 * 0 = Low; 1 = Medium; 2 = High; 3 = Off
502 int ring_led = wacom->led.select[0] & 0x03;
503 int ring_lum = (((wacom->led.llv & 0x60) >> 5) - 1) & 0x03;
506 buf[0] = WAC_CMD_LED_CONTROL;
507 buf[1] = (crop_lum << 4) | (ring_lum << 2) | (ring_led);
510 int led = wacom->led.select[0] | 0x4;
512 if (wacom->wacom_wac.features.type == WACOM_21UX2 ||
513 wacom->wacom_wac.features.type == WACOM_24HD)
514 led |= (wacom->led.select[1] << 4) | 0x40;
516 buf[0] = WAC_CMD_LED_CONTROL;
518 buf[2] = wacom->led.llv;
519 buf[3] = wacom->led.hlv;
520 buf[4] = wacom->led.img_lum;
523 retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 9,
530 static int wacom_led_putimage(struct wacom *wacom, int button_id, u8 xfer_id,
531 const unsigned len, const void *img)
535 const unsigned chunk_len = len / 4; /* 4 chunks are needed to be sent */
537 buf = kzalloc(chunk_len + 3 , GFP_KERNEL);
541 /* Send 'start' command */
542 buf[0] = WAC_CMD_ICON_START;
544 retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
550 buf[1] = button_id & 0x07;
551 for (i = 0; i < 4; i++) {
553 memcpy(buf + 3, img + i * chunk_len, chunk_len);
555 retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT,
556 buf, chunk_len + 3, WAC_CMD_RETRIES);
562 buf[0] = WAC_CMD_ICON_START;
564 wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
572 static ssize_t wacom_led_select_store(struct device *dev, int set_id,
573 const char *buf, size_t count)
575 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
576 struct wacom *wacom = hid_get_drvdata(hdev);
580 err = kstrtouint(buf, 10, &id);
584 mutex_lock(&wacom->lock);
586 wacom->led.select[set_id] = id & 0x3;
587 err = wacom_led_control(wacom);
589 mutex_unlock(&wacom->lock);
591 return err < 0 ? err : count;
594 #define DEVICE_LED_SELECT_ATTR(SET_ID) \
595 static ssize_t wacom_led##SET_ID##_select_store(struct device *dev, \
596 struct device_attribute *attr, const char *buf, size_t count) \
598 return wacom_led_select_store(dev, SET_ID, buf, count); \
600 static ssize_t wacom_led##SET_ID##_select_show(struct device *dev, \
601 struct device_attribute *attr, char *buf) \
603 struct hid_device *hdev = container_of(dev, struct hid_device, dev);\
604 struct wacom *wacom = hid_get_drvdata(hdev); \
605 return snprintf(buf, 2, "%d\n", wacom->led.select[SET_ID]); \
607 static DEVICE_ATTR(status_led##SET_ID##_select, S_IWUSR | S_IRUSR, \
608 wacom_led##SET_ID##_select_show, \
609 wacom_led##SET_ID##_select_store)
611 DEVICE_LED_SELECT_ATTR(0);
612 DEVICE_LED_SELECT_ATTR(1);
614 static ssize_t wacom_luminance_store(struct wacom *wacom, u8 *dest,
615 const char *buf, size_t count)
620 err = kstrtouint(buf, 10, &value);
624 mutex_lock(&wacom->lock);
626 *dest = value & 0x7f;
627 err = wacom_led_control(wacom);
629 mutex_unlock(&wacom->lock);
631 return err < 0 ? err : count;
634 #define DEVICE_LUMINANCE_ATTR(name, field) \
635 static ssize_t wacom_##name##_luminance_store(struct device *dev, \
636 struct device_attribute *attr, const char *buf, size_t count) \
638 struct hid_device *hdev = container_of(dev, struct hid_device, dev);\
639 struct wacom *wacom = hid_get_drvdata(hdev); \
641 return wacom_luminance_store(wacom, &wacom->led.field, \
644 static DEVICE_ATTR(name##_luminance, S_IWUSR, \
645 NULL, wacom_##name##_luminance_store)
647 DEVICE_LUMINANCE_ATTR(status0, llv);
648 DEVICE_LUMINANCE_ATTR(status1, hlv);
649 DEVICE_LUMINANCE_ATTR(buttons, img_lum);
651 static ssize_t wacom_button_image_store(struct device *dev, int button_id,
652 const char *buf, size_t count)
654 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
655 struct wacom *wacom = hid_get_drvdata(hdev);
660 if (hdev->bus == BUS_BLUETOOTH) {
662 xfer_id = WAC_CMD_ICON_BT_XFER;
665 xfer_id = WAC_CMD_ICON_XFER;
671 mutex_lock(&wacom->lock);
673 err = wacom_led_putimage(wacom, button_id, xfer_id, len, buf);
675 mutex_unlock(&wacom->lock);
677 return err < 0 ? err : count;
680 #define DEVICE_BTNIMG_ATTR(BUTTON_ID) \
681 static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev, \
682 struct device_attribute *attr, const char *buf, size_t count) \
684 return wacom_button_image_store(dev, BUTTON_ID, buf, count); \
686 static DEVICE_ATTR(button##BUTTON_ID##_rawimg, S_IWUSR, \
687 NULL, wacom_btnimg##BUTTON_ID##_store)
689 DEVICE_BTNIMG_ATTR(0);
690 DEVICE_BTNIMG_ATTR(1);
691 DEVICE_BTNIMG_ATTR(2);
692 DEVICE_BTNIMG_ATTR(3);
693 DEVICE_BTNIMG_ATTR(4);
694 DEVICE_BTNIMG_ATTR(5);
695 DEVICE_BTNIMG_ATTR(6);
696 DEVICE_BTNIMG_ATTR(7);
698 static struct attribute *cintiq_led_attrs[] = {
699 &dev_attr_status_led0_select.attr,
700 &dev_attr_status_led1_select.attr,
704 static struct attribute_group cintiq_led_attr_group = {
706 .attrs = cintiq_led_attrs,
709 static struct attribute *intuos4_led_attrs[] = {
710 &dev_attr_status0_luminance.attr,
711 &dev_attr_status1_luminance.attr,
712 &dev_attr_status_led0_select.attr,
713 &dev_attr_buttons_luminance.attr,
714 &dev_attr_button0_rawimg.attr,
715 &dev_attr_button1_rawimg.attr,
716 &dev_attr_button2_rawimg.attr,
717 &dev_attr_button3_rawimg.attr,
718 &dev_attr_button4_rawimg.attr,
719 &dev_attr_button5_rawimg.attr,
720 &dev_attr_button6_rawimg.attr,
721 &dev_attr_button7_rawimg.attr,
725 static struct attribute_group intuos4_led_attr_group = {
727 .attrs = intuos4_led_attrs,
730 static struct attribute *intuos5_led_attrs[] = {
731 &dev_attr_status0_luminance.attr,
732 &dev_attr_status_led0_select.attr,
736 static struct attribute_group intuos5_led_attr_group = {
738 .attrs = intuos5_led_attrs,
741 static int wacom_initialize_leds(struct wacom *wacom)
745 /* Initialize default values */
746 switch (wacom->wacom_wac.features.type) {
751 wacom->led.select[0] = 0;
752 wacom->led.select[1] = 0;
755 wacom->led.img_lum = 10;
756 error = sysfs_create_group(&wacom->hdev->dev.kobj,
757 &intuos4_led_attr_group);
762 wacom->led.select[0] = 0;
763 wacom->led.select[1] = 0;
766 wacom->led.img_lum = 0;
768 error = sysfs_create_group(&wacom->hdev->dev.kobj,
769 &cintiq_led_attr_group);
778 if (wacom->wacom_wac.features.device_type == BTN_TOOL_PEN) {
779 wacom->led.select[0] = 0;
780 wacom->led.select[1] = 0;
783 wacom->led.img_lum = 0;
785 error = sysfs_create_group(&wacom->hdev->dev.kobj,
786 &intuos5_led_attr_group);
797 "cannot create sysfs group err: %d\n", error);
800 wacom_led_control(wacom);
801 wacom->led_initialized = true;
806 static void wacom_destroy_leds(struct wacom *wacom)
808 if (!wacom->led_initialized)
811 wacom->led_initialized = false;
813 switch (wacom->wacom_wac.features.type) {
818 sysfs_remove_group(&wacom->hdev->dev.kobj,
819 &intuos4_led_attr_group);
824 sysfs_remove_group(&wacom->hdev->dev.kobj,
825 &cintiq_led_attr_group);
834 if (wacom->wacom_wac.features.device_type == BTN_TOOL_PEN)
835 sysfs_remove_group(&wacom->hdev->dev.kobj,
836 &intuos5_led_attr_group);
841 static enum power_supply_property wacom_battery_props[] = {
842 POWER_SUPPLY_PROP_STATUS,
843 POWER_SUPPLY_PROP_SCOPE,
844 POWER_SUPPLY_PROP_CAPACITY
847 static enum power_supply_property wacom_ac_props[] = {
848 POWER_SUPPLY_PROP_PRESENT,
849 POWER_SUPPLY_PROP_ONLINE,
850 POWER_SUPPLY_PROP_SCOPE,
853 static int wacom_battery_get_property(struct power_supply *psy,
854 enum power_supply_property psp,
855 union power_supply_propval *val)
857 struct wacom *wacom = container_of(psy, struct wacom, battery);
861 case POWER_SUPPLY_PROP_SCOPE:
862 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
864 case POWER_SUPPLY_PROP_CAPACITY:
866 wacom->wacom_wac.battery_capacity;
868 case POWER_SUPPLY_PROP_STATUS:
869 if (wacom->wacom_wac.bat_charging)
870 val->intval = POWER_SUPPLY_STATUS_CHARGING;
871 else if (wacom->wacom_wac.battery_capacity == 100 &&
872 wacom->wacom_wac.ps_connected)
873 val->intval = POWER_SUPPLY_STATUS_FULL;
875 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
885 static int wacom_ac_get_property(struct power_supply *psy,
886 enum power_supply_property psp,
887 union power_supply_propval *val)
889 struct wacom *wacom = container_of(psy, struct wacom, ac);
893 case POWER_SUPPLY_PROP_PRESENT:
895 case POWER_SUPPLY_PROP_ONLINE:
896 val->intval = wacom->wacom_wac.ps_connected;
898 case POWER_SUPPLY_PROP_SCOPE:
899 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
908 static int wacom_initialize_battery(struct wacom *wacom)
910 static atomic_t battery_no = ATOMIC_INIT(0);
914 if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) {
915 n = atomic_inc_return(&battery_no) - 1;
917 wacom->battery.properties = wacom_battery_props;
918 wacom->battery.num_properties = ARRAY_SIZE(wacom_battery_props);
919 wacom->battery.get_property = wacom_battery_get_property;
920 sprintf(wacom->wacom_wac.bat_name, "wacom_battery_%ld", n);
921 wacom->battery.name = wacom->wacom_wac.bat_name;
922 wacom->battery.type = POWER_SUPPLY_TYPE_BATTERY;
923 wacom->battery.use_for_apm = 0;
925 wacom->ac.properties = wacom_ac_props;
926 wacom->ac.num_properties = ARRAY_SIZE(wacom_ac_props);
927 wacom->ac.get_property = wacom_ac_get_property;
928 sprintf(wacom->wacom_wac.ac_name, "wacom_ac_%ld", n);
929 wacom->ac.name = wacom->wacom_wac.ac_name;
930 wacom->ac.type = POWER_SUPPLY_TYPE_MAINS;
931 wacom->ac.use_for_apm = 0;
933 error = power_supply_register(&wacom->hdev->dev,
938 power_supply_powers(&wacom->battery, &wacom->hdev->dev);
940 error = power_supply_register(&wacom->hdev->dev, &wacom->ac);
942 power_supply_unregister(&wacom->battery);
946 power_supply_powers(&wacom->ac, &wacom->hdev->dev);
952 static void wacom_destroy_battery(struct wacom *wacom)
954 if ((wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
955 wacom->battery.dev) {
956 power_supply_unregister(&wacom->battery);
957 wacom->battery.dev = NULL;
958 power_supply_unregister(&wacom->ac);
959 wacom->ac.dev = NULL;
963 static ssize_t wacom_show_speed(struct device *dev,
964 struct device_attribute
967 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
968 struct wacom *wacom = hid_get_drvdata(hdev);
970 return snprintf(buf, PAGE_SIZE, "%i\n", wacom->wacom_wac.bt_high_speed);
973 static ssize_t wacom_store_speed(struct device *dev,
974 struct device_attribute *attr,
975 const char *buf, size_t count)
977 struct hid_device *hdev = container_of(dev, struct hid_device, dev);
978 struct wacom *wacom = hid_get_drvdata(hdev);
981 if (kstrtou8(buf, 0, &new_speed))
984 if (new_speed != 0 && new_speed != 1)
987 wacom_bt_query_tablet_data(hdev, new_speed, &wacom->wacom_wac.features);
992 static DEVICE_ATTR(speed, S_IRUGO | S_IWUSR | S_IWGRP,
993 wacom_show_speed, wacom_store_speed);
995 static struct input_dev *wacom_allocate_input(struct wacom *wacom)
997 struct input_dev *input_dev;
998 struct hid_device *hdev = wacom->hdev;
999 struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1001 input_dev = input_allocate_device();
1005 input_dev->name = wacom_wac->name;
1006 input_dev->phys = hdev->phys;
1007 input_dev->dev.parent = &hdev->dev;
1008 input_dev->open = wacom_open;
1009 input_dev->close = wacom_close;
1010 input_dev->uniq = hdev->uniq;
1011 input_dev->id.bustype = hdev->bus;
1012 input_dev->id.vendor = hdev->vendor;
1013 input_dev->id.product = hdev->product;
1014 input_dev->id.version = hdev->version;
1015 input_set_drvdata(input_dev, wacom);
1020 static void wacom_unregister_inputs(struct wacom *wacom)
1022 if (wacom->wacom_wac.input)
1023 input_unregister_device(wacom->wacom_wac.input);
1024 if (wacom->wacom_wac.pad_input)
1025 input_unregister_device(wacom->wacom_wac.pad_input);
1026 wacom->wacom_wac.input = NULL;
1027 wacom->wacom_wac.pad_input = NULL;
1030 static int wacom_register_inputs(struct wacom *wacom)
1032 struct input_dev *input_dev, *pad_input_dev;
1033 struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1036 input_dev = wacom_allocate_input(wacom);
1037 pad_input_dev = wacom_allocate_input(wacom);
1038 if (!input_dev || !pad_input_dev) {
1043 wacom_wac->input = input_dev;
1044 wacom_wac->pad_input = pad_input_dev;
1045 wacom_wac->pad_input->name = wacom_wac->pad_name;
1047 error = wacom_setup_input_capabilities(input_dev, wacom_wac);
1051 error = input_register_device(input_dev);
1055 error = wacom_setup_pad_input_capabilities(pad_input_dev, wacom_wac);
1057 /* no pad in use on this interface */
1058 input_free_device(pad_input_dev);
1059 wacom_wac->pad_input = NULL;
1060 pad_input_dev = NULL;
1062 error = input_register_device(pad_input_dev);
1070 input_unregister_device(input_dev);
1073 wacom_wac->input = NULL;
1074 wacom_wac->pad_input = NULL;
1077 input_free_device(input_dev);
1079 input_free_device(pad_input_dev);
1083 static void wacom_wireless_work(struct work_struct *work)
1085 struct wacom *wacom = container_of(work, struct wacom, work);
1086 struct usb_device *usbdev = wacom->usbdev;
1087 struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1088 struct hid_device *hdev1, *hdev2;
1089 struct wacom *wacom1, *wacom2;
1090 struct wacom_wac *wacom_wac1, *wacom_wac2;
1094 * Regardless if this is a disconnect or a new tablet,
1095 * remove any existing input and battery devices.
1098 wacom_destroy_battery(wacom);
1100 /* Stylus interface */
1101 hdev1 = usb_get_intfdata(usbdev->config->interface[1]);
1102 wacom1 = hid_get_drvdata(hdev1);
1103 wacom_wac1 = &(wacom1->wacom_wac);
1104 wacom_unregister_inputs(wacom1);
1106 /* Touch interface */
1107 hdev2 = usb_get_intfdata(usbdev->config->interface[2]);
1108 wacom2 = hid_get_drvdata(hdev2);
1109 wacom_wac2 = &(wacom2->wacom_wac);
1110 wacom_unregister_inputs(wacom2);
1112 if (wacom_wac->pid == 0) {
1113 hid_info(wacom->hdev, "wireless tablet disconnected\n");
1114 wacom_wac1->shared->type = 0;
1116 const struct hid_device_id *id = wacom_ids;
1118 hid_info(wacom->hdev, "wireless tablet connected with PID %x\n",
1122 if (id->vendor == USB_VENDOR_ID_WACOM &&
1123 id->product == wacom_wac->pid)
1129 hid_info(wacom->hdev, "ignoring unknown PID.\n");
1133 /* Stylus interface */
1134 wacom_wac1->features =
1135 *((struct wacom_features *)id->driver_data);
1136 wacom_wac1->features.device_type = BTN_TOOL_PEN;
1137 snprintf(wacom_wac1->name, WACOM_NAME_MAX, "%s (WL) Pen",
1138 wacom_wac1->features.name);
1139 snprintf(wacom_wac1->pad_name, WACOM_NAME_MAX, "%s (WL) Pad",
1140 wacom_wac1->features.name);
1141 wacom_wac1->shared->touch_max = wacom_wac1->features.touch_max;
1142 wacom_wac1->shared->type = wacom_wac1->features.type;
1143 error = wacom_register_inputs(wacom1);
1147 /* Touch interface */
1148 if (wacom_wac1->features.touch_max ||
1149 wacom_wac1->features.type == INTUOSHT) {
1150 wacom_wac2->features =
1151 *((struct wacom_features *)id->driver_data);
1152 wacom_wac2->features.pktlen = WACOM_PKGLEN_BBTOUCH3;
1153 wacom_wac2->features.device_type = BTN_TOOL_FINGER;
1154 wacom_wac2->features.x_max = wacom_wac2->features.y_max = 4096;
1155 if (wacom_wac2->features.touch_max)
1156 snprintf(wacom_wac2->name, WACOM_NAME_MAX,
1157 "%s (WL) Finger",wacom_wac2->features.name);
1159 snprintf(wacom_wac2->name, WACOM_NAME_MAX,
1160 "%s (WL) Pad",wacom_wac2->features.name);
1161 snprintf(wacom_wac2->pad_name, WACOM_NAME_MAX,
1162 "%s (WL) Pad", wacom_wac2->features.name);
1163 error = wacom_register_inputs(wacom2);
1167 if (wacom_wac1->features.type == INTUOSHT &&
1168 wacom_wac1->features.touch_max)
1169 wacom_wac->shared->touch_input = wacom_wac2->input;
1172 error = wacom_initialize_battery(wacom);
1180 wacom_unregister_inputs(wacom1);
1181 wacom_unregister_inputs(wacom2);
1186 * Not all devices report physical dimensions from HID.
1187 * Compute the default from hardcoded logical dimension
1188 * and resolution before driver overwrites them.
1190 static void wacom_set_default_phy(struct wacom_features *features)
1192 if (features->x_resolution) {
1193 features->x_phy = (features->x_max * 100) /
1194 features->x_resolution;
1195 features->y_phy = (features->y_max * 100) /
1196 features->y_resolution;
1200 static void wacom_calculate_res(struct wacom_features *features)
1202 features->x_resolution = wacom_calc_hid_res(features->x_max,
1205 features->unitExpo);
1206 features->y_resolution = wacom_calc_hid_res(features->y_max,
1209 features->unitExpo);
1212 static int wacom_hid_report_len(struct hid_report *report)
1214 /* equivalent to DIV_ROUND_UP(report->size, 8) + !!(report->id > 0) */
1215 return ((report->size - 1) >> 3) + 1 + (report->id > 0);
1218 static size_t wacom_compute_pktlen(struct hid_device *hdev)
1220 struct hid_report_enum *report_enum;
1221 struct hid_report *report;
1224 report_enum = hdev->report_enum + HID_INPUT_REPORT;
1226 list_for_each_entry(report, &report_enum->report_list, list) {
1227 size_t report_size = wacom_hid_report_len(report);
1228 if (report_size > size)
1235 static int wacom_probe(struct hid_device *hdev,
1236 const struct hid_device_id *id)
1238 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
1239 struct usb_device *dev = interface_to_usbdev(intf);
1240 struct wacom *wacom;
1241 struct wacom_wac *wacom_wac;
1242 struct wacom_features *features;
1245 if (!id->driver_data)
1248 wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
1252 hid_set_drvdata(hdev, wacom);
1255 /* ask for the report descriptor to be loaded by HID */
1256 error = hid_parse(hdev);
1258 hid_err(hdev, "parse failed\n");
1262 wacom_wac = &wacom->wacom_wac;
1263 wacom_wac->features = *((struct wacom_features *)id->driver_data);
1264 features = &wacom_wac->features;
1265 features->pktlen = wacom_compute_pktlen(hdev);
1266 if (features->pktlen > WACOM_PKGLEN_MAX) {
1271 if (features->check_for_hid_type && features->hid_type != hdev->type) {
1276 wacom->usbdev = dev;
1278 mutex_init(&wacom->lock);
1279 INIT_WORK(&wacom->work, wacom_wireless_work);
1281 /* set the default size in case we do not get them from hid */
1282 wacom_set_default_phy(features);
1284 /* Retrieve the physical and logical size for touch devices */
1285 wacom_retrieve_hid_descriptor(hdev, features);
1288 * Intuos5 has no useful data about its touch interface in its
1289 * HID descriptor. If this is the touch interface (PacketSize
1290 * of WACOM_PKGLEN_BBTOUCH3), override the table values.
1292 if (features->type >= INTUOS5S && features->type <= INTUOSHT) {
1293 if (features->pktlen == WACOM_PKGLEN_BBTOUCH3) {
1294 features->device_type = BTN_TOOL_FINGER;
1296 features->x_max = 4096;
1297 features->y_max = 4096;
1299 features->device_type = BTN_TOOL_PEN;
1304 * Same thing for Bamboo 3rd gen.
1306 if ((features->type == BAMBOO_PT) &&
1307 (features->pktlen == WACOM_PKGLEN_BBTOUCH3) &&
1308 (features->device_type == BTN_TOOL_PEN)) {
1309 features->device_type = BTN_TOOL_FINGER;
1311 features->x_max = 4096;
1312 features->y_max = 4096;
1315 if (hdev->bus == BUS_BLUETOOTH)
1316 features->quirks |= WACOM_QUIRK_BATTERY;
1318 wacom_setup_device_quirks(features);
1320 /* set unit to "100th of a mm" for devices not reported by HID */
1321 if (!features->unit) {
1322 features->unit = 0x11;
1323 features->unitExpo = -3;
1325 wacom_calculate_res(features);
1327 strlcpy(wacom_wac->name, features->name, sizeof(wacom_wac->name));
1328 snprintf(wacom_wac->pad_name, sizeof(wacom_wac->pad_name),
1329 "%s Pad", features->name);
1331 if (features->quirks & WACOM_QUIRK_MULTI_INPUT) {
1332 /* Append the device type to the name */
1333 if (features->device_type != BTN_TOOL_FINGER)
1334 strlcat(wacom_wac->name, " Pen", WACOM_NAME_MAX);
1335 else if (features->touch_max)
1336 strlcat(wacom_wac->name, " Finger", WACOM_NAME_MAX);
1338 strlcat(wacom_wac->name, " Pad", WACOM_NAME_MAX);
1340 error = wacom_add_shared_data(hdev);
1345 error = wacom_initialize_leds(wacom);
1349 if (!(features->quirks & WACOM_QUIRK_MONITOR) &&
1350 (features->quirks & WACOM_QUIRK_BATTERY)) {
1351 error = wacom_initialize_battery(wacom);
1356 if (!(features->quirks & WACOM_QUIRK_NO_INPUT)) {
1357 error = wacom_register_inputs(wacom);
1362 if (hdev->bus == BUS_BLUETOOTH) {
1363 error = device_create_file(&hdev->dev, &dev_attr_speed);
1366 "can't create sysfs speed attribute err: %d\n",
1370 /* Note that if query fails it is not a hard failure */
1371 wacom_query_tablet_data(hdev, features);
1373 /* Regular HID work starts now */
1374 error = hid_hw_start(hdev, HID_CONNECT_HIDRAW);
1376 hid_err(hdev, "hw start failed\n");
1380 if (features->quirks & WACOM_QUIRK_MONITOR)
1381 error = hid_hw_open(hdev);
1383 if (wacom_wac->features.type == INTUOSHT && wacom_wac->features.touch_max) {
1384 if (wacom_wac->features.device_type == BTN_TOOL_FINGER)
1385 wacom_wac->shared->touch_input = wacom_wac->input;
1390 fail5: if (hdev->bus == BUS_BLUETOOTH)
1391 device_remove_file(&hdev->dev, &dev_attr_speed);
1392 wacom_unregister_inputs(wacom);
1393 fail4: wacom_destroy_battery(wacom);
1394 fail3: wacom_destroy_leds(wacom);
1395 fail2: wacom_remove_shared_data(wacom_wac);
1396 fail1: kfree(wacom);
1397 hid_set_drvdata(hdev, NULL);
1401 static void wacom_remove(struct hid_device *hdev)
1403 struct wacom *wacom = hid_get_drvdata(hdev);
1407 cancel_work_sync(&wacom->work);
1408 wacom_unregister_inputs(wacom);
1409 if (hdev->bus == BUS_BLUETOOTH)
1410 device_remove_file(&hdev->dev, &dev_attr_speed);
1411 wacom_destroy_battery(wacom);
1412 wacom_destroy_leds(wacom);
1413 wacom_remove_shared_data(&wacom->wacom_wac);
1415 hid_set_drvdata(hdev, NULL);
1420 static int wacom_resume(struct hid_device *hdev)
1422 struct wacom *wacom = hid_get_drvdata(hdev);
1423 struct wacom_features *features = &wacom->wacom_wac.features;
1425 mutex_lock(&wacom->lock);
1427 /* switch to wacom mode first */
1428 wacom_query_tablet_data(hdev, features);
1429 wacom_led_control(wacom);
1431 mutex_unlock(&wacom->lock);
1436 static int wacom_reset_resume(struct hid_device *hdev)
1438 return wacom_resume(hdev);
1440 #endif /* CONFIG_PM */
1442 static struct hid_driver wacom_driver = {
1444 .id_table = wacom_ids,
1445 .probe = wacom_probe,
1446 .remove = wacom_remove,
1448 .resume = wacom_resume,
1449 .reset_resume = wacom_reset_resume,
1451 .raw_event = wacom_raw_event,
1453 module_hid_driver(wacom_driver);
1455 MODULE_VERSION(DRIVER_VERSION);
1456 MODULE_AUTHOR(DRIVER_AUTHOR);
1457 MODULE_DESCRIPTION(DRIVER_DESC);
1458 MODULE_LICENSE(DRIVER_LICENSE);