| /* |
| * drivers/input/tablet/wacom_sys.c |
| * |
| * USB Wacom tablet support - system specific code |
| */ |
| |
| /* |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| */ |
| |
| #include "wacom_wac.h" |
| #include "wacom.h" |
| #include <linux/input/mt.h> |
| |
| #define WAC_MSG_RETRIES 5 |
| #define WAC_CMD_RETRIES 10 |
| |
| #define DEV_ATTR_RW_PERM (S_IRUGO | S_IWUSR | S_IWGRP) |
| #define DEV_ATTR_WO_PERM (S_IWUSR | S_IWGRP) |
| #define DEV_ATTR_RO_PERM (S_IRUSR | S_IRGRP) |
| |
| static int wacom_get_report(struct hid_device *hdev, u8 type, u8 *buf, |
| size_t size, unsigned int retries) |
| { |
| int retval; |
| |
| do { |
| retval = hid_hw_raw_request(hdev, buf[0], buf, size, type, |
| HID_REQ_GET_REPORT); |
| } while ((retval == -ETIMEDOUT || retval == -EAGAIN) && --retries); |
| |
| if (retval < 0) |
| hid_err(hdev, "wacom_get_report: ran out of retries " |
| "(last error = %d)\n", retval); |
| |
| return retval; |
| } |
| |
| static int wacom_set_report(struct hid_device *hdev, u8 type, u8 *buf, |
| size_t size, unsigned int retries) |
| { |
| int retval; |
| |
| do { |
| retval = hid_hw_raw_request(hdev, buf[0], buf, size, type, |
| HID_REQ_SET_REPORT); |
| } while ((retval == -ETIMEDOUT || retval == -EAGAIN) && --retries); |
| |
| if (retval < 0) |
| hid_err(hdev, "wacom_set_report: ran out of retries " |
| "(last error = %d)\n", retval); |
| |
| return retval; |
| } |
| |
| static int wacom_raw_event(struct hid_device *hdev, struct hid_report *report, |
| u8 *raw_data, int size) |
| { |
| struct wacom *wacom = hid_get_drvdata(hdev); |
| |
| if (wacom->wacom_wac.features.type == BOOTLOADER) |
| return 0; |
| |
| if (size > WACOM_PKGLEN_MAX) |
| return 1; |
| |
| memcpy(wacom->wacom_wac.data, raw_data, size); |
| |
| wacom_wac_irq(&wacom->wacom_wac, size); |
| |
| return 0; |
| } |
| |
| static int wacom_open(struct input_dev *dev) |
| { |
| struct wacom *wacom = input_get_drvdata(dev); |
| |
| return hid_hw_open(wacom->hdev); |
| } |
| |
| static void wacom_close(struct input_dev *dev) |
| { |
| struct wacom *wacom = input_get_drvdata(dev); |
| |
| /* |
| * wacom->hdev should never be null, but surprisingly, I had the case |
| * once while unplugging the Wacom Wireless Receiver. |
| */ |
| if (wacom->hdev) |
| hid_hw_close(wacom->hdev); |
| } |
| |
| /* |
| * Calculate the resolution of the X or Y axis using hidinput_calc_abs_res. |
| */ |
| static int wacom_calc_hid_res(int logical_extents, int physical_extents, |
| unsigned unit, int exponent) |
| { |
| struct hid_field field = { |
| .logical_maximum = logical_extents, |
| .physical_maximum = physical_extents, |
| .unit = unit, |
| .unit_exponent = exponent, |
| }; |
| |
| return hidinput_calc_abs_res(&field, ABS_X); |
| } |
| |
| static void wacom_feature_mapping(struct hid_device *hdev, |
| struct hid_field *field, struct hid_usage *usage) |
| { |
| struct wacom *wacom = hid_get_drvdata(hdev); |
| struct wacom_features *features = &wacom->wacom_wac.features; |
| struct hid_data *hid_data = &wacom->wacom_wac.hid_data; |
| unsigned int equivalent_usage = wacom_equivalent_usage(usage->hid); |
| u8 *data; |
| int ret; |
| u32 n; |
| |
| switch (equivalent_usage) { |
| case WACOM_HID_WD_TOUCH_RING_SETTING: |
| wacom->generic_has_leds = true; |
| break; |
| case HID_DG_CONTACTMAX: |
| /* leave touch_max as is if predefined */ |
| if (!features->touch_max) { |
| /* read manually */ |
| n = hid_report_len(field->report); |
| data = hid_alloc_report_buf(field->report, GFP_KERNEL); |
| if (!data) |
| break; |
| data[0] = field->report->id; |
| ret = wacom_get_report(hdev, HID_FEATURE_REPORT, |
| data, n, WAC_CMD_RETRIES); |
| if (ret == n && features->type == HID_GENERIC) { |
| ret = hid_report_raw_event(hdev, |
| HID_FEATURE_REPORT, data, n, 0); |
| } else if (ret == 2 && features->type != HID_GENERIC) { |
| features->touch_max = data[1]; |
| } else { |
| features->touch_max = 16; |
| hid_warn(hdev, "wacom_feature_mapping: " |
| "could not get HID_DG_CONTACTMAX, " |
| "defaulting to %d\n", |
| features->touch_max); |
| } |
| kfree(data); |
| } |
| break; |
| case HID_DG_INPUTMODE: |
| /* Ignore if value index is out of bounds. */ |
| if (usage->usage_index >= field->report_count) { |
| dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n"); |
| break; |
| } |
| |
| hid_data->inputmode = field->report->id; |
| hid_data->inputmode_index = usage->usage_index; |
| break; |
| |
| case HID_UP_DIGITIZER: |
| if (field->report->id == 0x0B && |
| (field->application == WACOM_HID_G9_PEN || |
| field->application == WACOM_HID_G11_PEN)) { |
| wacom->wacom_wac.mode_report = field->report->id; |
| wacom->wacom_wac.mode_value = 0; |
| } |
| break; |
| |
| case WACOM_HID_WD_DATAMODE: |
| wacom->wacom_wac.mode_report = field->report->id; |
| wacom->wacom_wac.mode_value = 2; |
| break; |
| |
| case WACOM_HID_UP_G9: |
| case WACOM_HID_UP_G11: |
| if (field->report->id == 0x03 && |
| (field->application == WACOM_HID_G9_TOUCHSCREEN || |
| field->application == WACOM_HID_G11_TOUCHSCREEN)) { |
| wacom->wacom_wac.mode_report = field->report->id; |
| wacom->wacom_wac.mode_value = 0; |
| } |
| break; |
| case WACOM_HID_WD_OFFSETLEFT: |
| case WACOM_HID_WD_OFFSETTOP: |
| case WACOM_HID_WD_OFFSETRIGHT: |
| case WACOM_HID_WD_OFFSETBOTTOM: |
| /* read manually */ |
| n = hid_report_len(field->report); |
| data = hid_alloc_report_buf(field->report, GFP_KERNEL); |
| if (!data) |
| break; |
| data[0] = field->report->id; |
| ret = wacom_get_report(hdev, HID_FEATURE_REPORT, |
| data, n, WAC_CMD_RETRIES); |
| if (ret == n) { |
| ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, |
| data, n, 0); |
| } else { |
| hid_warn(hdev, "%s: could not retrieve sensor offsets\n", |
| __func__); |
| } |
| kfree(data); |
| break; |
| } |
| } |
| |
| /* |
| * Interface Descriptor of wacom devices can be incomplete and |
| * inconsistent so wacom_features table is used to store stylus |
| * device's packet lengths, various maximum values, and tablet |
| * resolution based on product ID's. |
| * |
| * For devices that contain 2 interfaces, wacom_features table is |
| * inaccurate for the touch interface. Since the Interface Descriptor |
| * for touch interfaces has pretty complete data, this function exists |
| * to query tablet for this missing information instead of hard coding in |
| * an additional table. |
| * |
| * A typical Interface Descriptor for a stylus will contain a |
| * boot mouse application collection that is not of interest and this |
| * function will ignore it. |
| * |
| * It also contains a digitizer application collection that also is not |
| * of interest since any information it contains would be duplicate |
| * of what is in wacom_features. Usually it defines a report of an array |
| * of bytes that could be used as max length of the stylus packet returned. |
| * If it happens to define a Digitizer-Stylus Physical Collection then |
| * the X and Y logical values contain valid data but it is ignored. |
| * |
| * A typical Interface Descriptor for a touch interface will contain a |
| * Digitizer-Finger Physical Collection which will define both logical |
| * X/Y maximum as well as the physical size of tablet. Since touch |
| * interfaces haven't supported pressure or distance, this is enough |
| * information to override invalid values in the wacom_features table. |
| * |
| * Intuos5 touch interface and 3rd gen Bamboo Touch do not contain useful |
| * data. We deal with them after returning from this function. |
| */ |
| static void wacom_usage_mapping(struct hid_device *hdev, |
| struct hid_field *field, struct hid_usage *usage) |
| { |
| struct wacom *wacom = hid_get_drvdata(hdev); |
| struct wacom_features *features = &wacom->wacom_wac.features; |
| bool finger = WACOM_FINGER_FIELD(field); |
| bool pen = WACOM_PEN_FIELD(field); |
| |
| /* |
| * Requiring Stylus Usage will ignore boot mouse |
| * X/Y values and some cases of invalid Digitizer X/Y |
| * values commonly reported. |
| */ |
| if (pen) |
| features->device_type |= WACOM_DEVICETYPE_PEN; |
| else if (finger) |
| features->device_type |= WACOM_DEVICETYPE_TOUCH; |
| else |
| return; |
| |
| /* |
| * Bamboo models do not support HID_DG_CONTACTMAX. |
| * And, Bamboo Pen only descriptor contains touch. |
| */ |
| if (features->type > BAMBOO_PT) { |
| /* ISDv4 touch devices at least supports one touch point */ |
| if (finger && !features->touch_max) |
| features->touch_max = 1; |
| } |
| |
| /* |
| * ISDv4 devices which predate HID's adoption of the |
| * HID_DG_BARELSWITCH2 usage use 0x000D0000 in its |
| * position instead. We can accurately detect if a |
| * usage with that value should be HID_DG_BARRELSWITCH2 |
| * based on the surrounding usages, which have remained |
| * constant across generations. |
| */ |
| if (features->type == HID_GENERIC && |
| usage->hid == 0x000D0000 && |
| field->application == HID_DG_PEN && |
| field->physical == HID_DG_STYLUS) { |
| int i = usage->usage_index; |
| |
| if (i-4 >= 0 && i+1 < field->maxusage && |
| field->usage[i-4].hid == HID_DG_TIPSWITCH && |
| field->usage[i-3].hid == HID_DG_BARRELSWITCH && |
| field->usage[i-2].hid == HID_DG_ERASER && |
| field->usage[i-1].hid == HID_DG_INVERT && |
| field->usage[i+1].hid == HID_DG_INRANGE) { |
| usage->hid = HID_DG_BARRELSWITCH2; |
| } |
| } |
| |
| /* 2nd-generation Intuos Pro Large has incorrect Y maximum */ |
| if (hdev->vendor == USB_VENDOR_ID_WACOM && |
| hdev->product == 0x0358 && |
| WACOM_PEN_FIELD(field) && |
| wacom_equivalent_usage(usage->hid) == HID_GD_Y) { |
| field->logical_maximum = 43200; |
| } |
| |
| switch (usage->hid) { |
| case HID_GD_X: |
| features->x_max = field->logical_maximum; |
| if (finger) { |
| features->x_phy = field->physical_maximum; |
| if ((features->type != BAMBOO_PT) && |
| (features->type != BAMBOO_TOUCH)) { |
| features->unit = field->unit; |
| features->unitExpo = field->unit_exponent; |
| } |
| } |
| break; |
| case HID_GD_Y: |
| features->y_max = field->logical_maximum; |
| if (finger) { |
| features->y_phy = field->physical_maximum; |
| if ((features->type != BAMBOO_PT) && |
| (features->type != BAMBOO_TOUCH)) { |
| features->unit = field->unit; |
| features->unitExpo = field->unit_exponent; |
| } |
| } |
| break; |
| case HID_DG_TIPPRESSURE: |
| if (pen) |
| features->pressure_max = field->logical_maximum; |
| break; |
| } |
| |
| if (features->type == HID_GENERIC) |
| wacom_wac_usage_mapping(hdev, field, usage); |
| } |
| |
| static void wacom_post_parse_hid(struct hid_device *hdev, |
| struct wacom_features *features) |
| { |
| struct wacom *wacom = hid_get_drvdata(hdev); |
| struct wacom_wac *wacom_wac = &wacom->wacom_wac; |
| |
| if (features->type == HID_GENERIC) { |
| /* Any last-minute generic device setup */ |
| if (wacom_wac->has_mode_change) { |
| if (wacom_wac->is_direct_mode) |
| features->device_type |= WACOM_DEVICETYPE_DIRECT; |
| else |
| features->device_type &= ~WACOM_DEVICETYPE_DIRECT; |
| } |
| |
| if (features->touch_max > 1) { |
| if (features->device_type & WACOM_DEVICETYPE_DIRECT) |
| input_mt_init_slots(wacom_wac->touch_input, |
| wacom_wac->features.touch_max, |
| INPUT_MT_DIRECT); |
| else |
| input_mt_init_slots(wacom_wac->touch_input, |
| wacom_wac->features.touch_max, |
| INPUT_MT_POINTER); |
| } |
| } |
| } |
| |
| static void wacom_parse_hid(struct hid_device *hdev, |
| struct wacom_features *features) |
| { |
| struct hid_report_enum *rep_enum; |
| struct hid_report *hreport; |
| int i, j; |
| |
| /* check features first */ |
| rep_enum = &hdev->report_enum[HID_FEATURE_REPORT]; |
| list_for_each_entry(hreport, &rep_enum->report_list, list) { |
| for (i = 0; i < hreport->maxfield; i++) { |
| /* Ignore if report count is out of bounds. */ |
| if (hreport->field[i]->report_count < 1) |
| continue; |
| |
| for (j = 0; j < hreport->field[i]->maxusage; j++) { |
| wacom_feature_mapping(hdev, hreport->field[i], |
| hreport->field[i]->usage + j); |
| } |
| } |
| } |
| |
| /* now check the input usages */ |
| rep_enum = &hdev->report_enum[HID_INPUT_REPORT]; |
| list_for_each_entry(hreport, &rep_enum->report_list, list) { |
| |
| if (!hreport->maxfield) |
| continue; |
| |
| for (i = 0; i < hreport->maxfield; i++) |
| for (j = 0; j < hreport->field[i]->maxusage; j++) |
| wacom_usage_mapping(hdev, hreport->field[i], |
| hreport->field[i]->usage + j); |
| } |
| |
| wacom_post_parse_hid(hdev, features); |
| } |
| |
| static int wacom_hid_set_device_mode(struct hid_device *hdev) |
| { |
| struct wacom *wacom = hid_get_drvdata(hdev); |
| struct hid_data *hid_data = &wacom->wacom_wac.hid_data; |
| struct hid_report *r; |
| struct hid_report_enum *re; |
| |
| if (hid_data->inputmode < 0) |
| return 0; |
| |
| re = &(hdev->report_enum[HID_FEATURE_REPORT]); |
| r = re->report_id_hash[hid_data->inputmode]; |
| if (r) { |
| r->field[0]->value[hid_data->inputmode_index] = 2; |
| hid_hw_request(hdev, r, HID_REQ_SET_REPORT); |
| } |
| return 0; |
| } |
| |
| static int wacom_set_device_mode(struct hid_device *hdev, |
| struct wacom_wac *wacom_wac) |
| { |
| u8 *rep_data; |
| struct hid_report *r; |
| struct hid_report_enum *re; |
| u32 length; |
| int error = -ENOMEM, limit = 0; |
| |
| if (wacom_wac->mode_report < 0) |
| return 0; |
| |
| re = &(hdev->report_enum[HID_FEATURE_REPORT]); |
| r = re->report_id_hash[wacom_wac->mode_report]; |
| if (!r) |
| return -EINVAL; |
| |
| rep_data = hid_alloc_report_buf(r, GFP_KERNEL); |
| if (!rep_data) |
| return -ENOMEM; |
| |
| length = hid_report_len(r); |
| |
| do { |
| rep_data[0] = wacom_wac->mode_report; |
| rep_data[1] = wacom_wac->mode_value; |
| |
| error = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, |
| length, 1); |
| if (error >= 0) |
| error = wacom_get_report(hdev, HID_FEATURE_REPORT, |
| rep_data, length, 1); |
| } while (error >= 0 && |
| rep_data[1] != wacom_wac->mode_report && |
| limit++ < WAC_MSG_RETRIES); |
| |
| kfree(rep_data); |
| |
| return error < 0 ? error : 0; |
| } |
| |
| static int wacom_bt_query_tablet_data(struct hid_device *hdev, u8 speed, |
| struct wacom_features *features) |
| { |
| struct wacom *wacom = hid_get_drvdata(hdev); |
| int ret; |
| u8 rep_data[2]; |
| |
| switch (features->type) { |
| case GRAPHIRE_BT: |
| rep_data[0] = 0x03; |
| rep_data[1] = 0x00; |
| ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2, |
| 3); |
| |
| if (ret >= 0) { |
| rep_data[0] = speed == 0 ? 0x05 : 0x06; |
| rep_data[1] = 0x00; |
| |
| ret = wacom_set_report(hdev, HID_FEATURE_REPORT, |
| rep_data, 2, 3); |
| |
| if (ret >= 0) { |
| wacom->wacom_wac.bt_high_speed = speed; |
| return 0; |
| } |
| } |
| |
| /* |
| * Note that if the raw queries fail, it's not a hard failure |
| * and it is safe to continue |
| */ |
| hid_warn(hdev, "failed to poke device, command %d, err %d\n", |
| rep_data[0], ret); |
| break; |
| case INTUOS4WL: |
| if (speed == 1) |
| wacom->wacom_wac.bt_features &= ~0x20; |
| else |
| wacom->wacom_wac.bt_features |= 0x20; |
| |
| rep_data[0] = 0x03; |
| rep_data[1] = wacom->wacom_wac.bt_features; |
| |
| ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2, |
| 1); |
| if (ret >= 0) |
| wacom->wacom_wac.bt_high_speed = speed; |
| break; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * Switch the tablet into its most-capable mode. Wacom tablets are |
| * typically configured to power-up in a mode which sends mouse-like |
| * reports to the OS. To get absolute position, pressure data, etc. |
| * from the tablet, it is necessary to switch the tablet out of this |
| * mode and into one which sends the full range of tablet data. |
| */ |
| static int _wacom_query_tablet_data(struct wacom *wacom) |
| { |
| struct hid_device *hdev = wacom->hdev; |
| struct wacom_wac *wacom_wac = &wacom->wacom_wac; |
| struct wacom_features *features = &wacom_wac->features; |
| |
| if (hdev->bus == BUS_BLUETOOTH) |
| return wacom_bt_query_tablet_data(hdev, 1, features); |
| |
| if (features->type != HID_GENERIC) { |
| if (features->device_type & WACOM_DEVICETYPE_TOUCH) { |
| if (features->type > TABLETPC) { |
| /* MT Tablet PC touch */ |
| wacom_wac->mode_report = 3; |
| wacom_wac->mode_value = 4; |
| } else if (features->type == WACOM_24HDT) { |
| wacom_wac->mode_report = 18; |
| wacom_wac->mode_value = 2; |
| } else if (features->type == WACOM_27QHDT) { |
| wacom_wac->mode_report = 131; |
| wacom_wac->mode_value = 2; |
| } else if (features->type == BAMBOO_PAD) { |
| wacom_wac->mode_report = 2; |
| wacom_wac->mode_value = 2; |
| } |
| } else if (features->device_type & WACOM_DEVICETYPE_PEN) { |
| if (features->type <= BAMBOO_PT) { |
| wacom_wac->mode_report = 2; |
| wacom_wac->mode_value = 2; |
| } |
| } |
| } |
| |
| wacom_set_device_mode(hdev, wacom_wac); |
| |
| if (features->type == HID_GENERIC) |
| return wacom_hid_set_device_mode(hdev); |
| |
| return 0; |
| } |
| |
| static void wacom_retrieve_hid_descriptor(struct hid_device *hdev, |
| struct wacom_features *features) |
| { |
| struct wacom *wacom = hid_get_drvdata(hdev); |
| struct usb_interface *intf = wacom->intf; |
| |
| /* default features */ |
| features->x_fuzz = 4; |
| features->y_fuzz = 4; |
| features->pressure_fuzz = 0; |
| features->distance_fuzz = 1; |
| features->tilt_fuzz = 1; |
| |
| /* |
| * The wireless device HID is basic and layout conflicts with |
| * other tablets (monitor and touch interface can look like pen). |
| * Skip the query for this type and modify defaults based on |
| * interface number. |
| */ |
| if (features->type == WIRELESS && intf) { |
| if (intf->cur_altsetting->desc.bInterfaceNumber == 0) |
| features->device_type = WACOM_DEVICETYPE_WL_MONITOR; |
| else |
| features->device_type = WACOM_DEVICETYPE_NONE; |
| return; |
| } |
| |
| wacom_parse_hid(hdev, features); |
| } |
| |
| struct wacom_hdev_data { |
| struct list_head list; |
| struct kref kref; |
| struct hid_device *dev; |
| struct wacom_shared shared; |
| }; |
| |
| static LIST_HEAD(wacom_udev_list); |
| static DEFINE_MUTEX(wacom_udev_list_lock); |
| |
| static bool compare_device_paths(struct hid_device *hdev_a, |
| struct hid_device *hdev_b, char separator) |
| { |
| int n1 = strrchr(hdev_a->phys, separator) - hdev_a->phys; |
| int n2 = strrchr(hdev_b->phys, separator) - hdev_b->phys; |
| |
| if (n1 != n2 || n1 <= 0 || n2 <= 0) |
| return false; |
| |
| return !strncmp(hdev_a->phys, hdev_b->phys, n1); |
| } |
| |
| static bool wacom_are_sibling(struct hid_device *hdev, |
| struct hid_device *sibling) |
| { |
| struct wacom *wacom = hid_get_drvdata(hdev); |
| struct wacom_features *features = &wacom->wacom_wac.features; |
| struct wacom *sibling_wacom = hid_get_drvdata(sibling); |
| struct wacom_features *sibling_features = &sibling_wacom->wacom_wac.features; |
| __u32 oVid = features->oVid ? features->oVid : hdev->vendor; |
| __u32 oPid = features->oPid ? features->oPid : hdev->product; |
| |
| /* The defined oVid/oPid must match that of the sibling */ |
| if (features->oVid != HID_ANY_ID && sibling->vendor != oVid) |
| return false; |
| if (features->oPid != HID_ANY_ID && sibling->product != oPid) |
| return false; |
| |
| /* |
| * Devices with the same VID/PID must share the same physical |
| * device path, while those with different VID/PID must share |
| * the same physical parent device path. |
| */ |
| if (hdev->vendor == sibling->vendor && hdev->product == sibling->product) { |
| if (!compare_device_paths(hdev, sibling, '/')) |
| return false; |
| } else { |
| if (!compare_device_paths(hdev, sibling, '.')) |
| return false; |
| } |
| |
| /* Skip the remaining heuristics unless you are a HID_GENERIC device */ |
| if (features->type != HID_GENERIC) |
| return true; |
| |
| /* |
| * Direct-input devices may not be siblings of indirect-input |
| * devices. |
| */ |
| if ((features->device_type & WACOM_DEVICETYPE_DIRECT) && |
| !(sibling_features->device_type & WACOM_DEVICETYPE_DIRECT)) |
| return false; |
| |
| /* |
| * Indirect-input devices may not be siblings of direct-input |
| * devices. |
| */ |
| if (!(features->device_type & WACOM_DEVICETYPE_DIRECT) && |
| (sibling_features->device_type & WACOM_DEVICETYPE_DIRECT)) |
| return false; |
| |
| /* Pen devices may only be siblings of touch devices */ |
| if ((features->device_type & WACOM_DEVICETYPE_PEN) && |
| !(sibling_features->device_type & WACOM_DEVICETYPE_TOUCH)) |
| return false; |
| |
| /* Touch devices may only be siblings of pen devices */ |
| if ((features->device_type & WACOM_DEVICETYPE_TOUCH) && |
| !(sibling_features->device_type & WACOM_DEVICETYPE_PEN)) |
| return false; |
| |
| /* |
| * No reason could be found for these two devices to NOT be |
| * siblings, so there's a good chance they ARE siblings |
| */ |
| return true; |
| } |
| |
| static struct wacom_hdev_data *wacom_get_hdev_data(struct hid_device *hdev) |
| { |
| struct wacom_hdev_data *data; |
| |
| /* Try to find an already-probed interface from the same device */ |
| list_for_each_entry(data, &wacom_udev_list, list) { |
| if (compare_device_paths(hdev, data->dev, '/')) { |
| kref_get(&data->kref); |
| return data; |
| } |
| } |
| |
| /* Fallback to finding devices that appear to be "siblings" */ |
| list_for_each_entry(data, &wacom_udev_list, list) { |
| if (wacom_are_sibling(hdev, data->dev)) { |
| kref_get(&data->kref); |
| return data; |
| } |
| } |
| |
| return NULL; |
| } |
| |
| static void wacom_release_shared_data(struct kref *kref) |
| { |
| struct wacom_hdev_data *data = |
| container_of(kref, struct wacom_hdev_data, kref); |
| |
| mutex_lock(&wacom_udev_list_lock); |
| list_del(&data->list); |
| mutex_unlock(&wacom_udev_list_lock); |
| |
| kfree(data); |
| } |
| |
| static void wacom_remove_shared_data(void *res) |
| { |
| struct wacom *wacom = res; |
| struct wacom_hdev_data *data; |
| struct wacom_wac *wacom_wac = &wacom->wacom_wac; |
| |
| if (wacom_wac->shared) { |
| data = container_of(wacom_wac->shared, struct wacom_hdev_data, |
| shared); |
| |
| if (wacom_wac->shared->touch == wacom->hdev) |
| wacom_wac->shared->touch = NULL; |
| else if (wacom_wac->shared->pen == wacom->hdev) |
| wacom_wac->shared->pen = NULL; |
| |
| kref_put(&data->kref, wacom_release_shared_data); |
| wacom_wac->shared = NULL; |
| } |
| } |
| |
| static int wacom_add_shared_data(struct hid_device *hdev) |
| { |
| struct wacom *wacom = hid_get_drvdata(hdev); |
| struct wacom_wac *wacom_wac = &wacom->wacom_wac; |
| struct wacom_hdev_data *data; |
| int retval = 0; |
| |
| mutex_lock(&wacom_udev_list_lock); |
| |
| data = wacom_get_hdev_data(hdev); |
| if (!data) { |
| data = kzalloc(sizeof(struct wacom_hdev_data), GFP_KERNEL); |
| if (!data) { |
| retval = -ENOMEM; |
| goto out; |
| } |
| |
| kref_init(&data->kref); |
| data->dev = hdev; |
| list_add_tail(&data->list, &wacom_udev_list); |
| } |
| |
| wacom_wac->shared = &data->shared; |
| |
| retval = devm_add_action(&hdev->dev, wacom_remove_shared_data, wacom); |
| if (retval) { |
| mutex_unlock(&wacom_udev_list_lock); |
| wacom_remove_shared_data(wacom); |
| return retval; |
| } |
| |
| if (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH) |
| wacom_wac->shared->touch = hdev; |
| else if (wacom_wac->features.device_type & WACOM_DEVICETYPE_PEN) |
| wacom_wac->shared->pen = hdev; |
| |
| out: |
| mutex_unlock(&wacom_udev_list_lock); |
| return retval; |
| } |
| |
| static int wacom_led_control(struct wacom *wacom) |
| { |
| unsigned char *buf; |
| int retval; |
| unsigned char report_id = WAC_CMD_LED_CONTROL; |
| int buf_size = 9; |
| |
| if (!wacom->led.groups) |
| return -ENOTSUPP; |
| |
| if (wacom->wacom_wac.features.type == REMOTE) |
| return -ENOTSUPP; |
| |
| if (wacom->wacom_wac.pid) { /* wireless connected */ |
| report_id = WAC_CMD_WL_LED_CONTROL; |
| buf_size = 13; |
| } |
| else if (wacom->wacom_wac.features.type == INTUOSP2_BT) { |
| report_id = WAC_CMD_WL_INTUOSP2; |
| buf_size = 51; |
| } |
| buf = kzalloc(buf_size, GFP_KERNEL); |
| if (!buf) |
| return -ENOMEM; |
| |
| if (wacom->wacom_wac.features.type == HID_GENERIC) { |
| buf[0] = WAC_CMD_LED_CONTROL_GENERIC; |
| buf[1] = wacom->led.llv; |
| buf[2] = wacom->led.groups[0].select & 0x03; |
| |
| } else if ((wacom->wacom_wac.features.type >= INTUOS5S && |
| wacom->wacom_wac.features.type <= INTUOSPL)) { |
| /* |
| * Touch Ring and crop mark LED luminance may take on |
| * one of four values: |
| * 0 = Low; 1 = Medium; 2 = High; 3 = Off |
| */ |
| int ring_led = wacom->led.groups[0].select & 0x03; |
| int ring_lum = (((wacom->led.llv & 0x60) >> 5) - 1) & 0x03; |
| int crop_lum = 0; |
| unsigned char led_bits = (crop_lum << 4) | (ring_lum << 2) | (ring_led); |
| |
| buf[0] = report_id; |
| if (wacom->wacom_wac.pid) { |
| wacom_get_report(wacom->hdev, HID_FEATURE_REPORT, |
| buf, buf_size, WAC_CMD_RETRIES); |
| buf[0] = report_id; |
| buf[4] = led_bits; |
| } else |
| buf[1] = led_bits; |
| } |
| else if (wacom->wacom_wac.features.type == INTUOSP2_BT) { |
| buf[0] = report_id; |
| buf[4] = 100; // Power Connection LED (ORANGE) |
| buf[5] = 100; // BT Connection LED (BLUE) |
| buf[6] = 100; // Paper Mode (RED?) |
| buf[7] = 100; // Paper Mode (GREEN?) |
| buf[8] = 100; // Paper Mode (BLUE?) |
| buf[9] = wacom->led.llv; |
| buf[10] = wacom->led.groups[0].select & 0x03; |
| } |
| else { |
| int led = wacom->led.groups[0].select | 0x4; |
| |
| if (wacom->wacom_wac.features.type == WACOM_21UX2 || |
| wacom->wacom_wac.features.type == WACOM_24HD) |
| led |= (wacom->led.groups[1].select << 4) | 0x40; |
| |
| buf[0] = report_id; |
| buf[1] = led; |
| buf[2] = wacom->led.llv; |
| buf[3] = wacom->led.hlv; |
| buf[4] = wacom->led.img_lum; |
| } |
| |
| retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, buf_size, |
| WAC_CMD_RETRIES); |
| kfree(buf); |
| |
| return retval; |
| } |
| |
| static int wacom_led_putimage(struct wacom *wacom, int button_id, u8 xfer_id, |
| const unsigned len, const void *img) |
| { |
| unsigned char *buf; |
| int i, retval; |
| const unsigned chunk_len = len / 4; /* 4 chunks are needed to be sent */ |
| |
| buf = kzalloc(chunk_len + 3 , GFP_KERNEL); |
| if (!buf) |
| return -ENOMEM; |
| |
| /* Send 'start' command */ |
| buf[0] = WAC_CMD_ICON_START; |
| buf[1] = 1; |
| retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2, |
| WAC_CMD_RETRIES); |
| if (retval < 0) |
| goto out; |
| |
| buf[0] = xfer_id; |
| buf[1] = button_id & 0x07; |
| for (i = 0; i < 4; i++) { |
| buf[2] = i; |
| memcpy(buf + 3, img + i * chunk_len, chunk_len); |
| |
| retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, |
| buf, chunk_len + 3, WAC_CMD_RETRIES); |
| if (retval < 0) |
| break; |
| } |
| |
| /* Send 'stop' */ |
| buf[0] = WAC_CMD_ICON_START; |
| buf[1] = 0; |
| wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2, |
| WAC_CMD_RETRIES); |
| |
| out: |
| kfree(buf); |
| return retval; |
| } |
| |
| static ssize_t wacom_led_select_store(struct device *dev, int set_id, |
| const char *buf, size_t count) |
| { |
| struct hid_device *hdev = to_hid_device(dev); |
| struct wacom *wacom = hid_get_drvdata(hdev); |
| unsigned int id; |
| int err; |
| |
| err = kstrtouint(buf, 10, &id); |
| if (err) |
| return err; |
| |
| mutex_lock(&wacom->lock); |
| |
| wacom->led.groups[set_id].select = id & 0x3; |
| err = wacom_led_control(wacom); |
| |
| mutex_unlock(&wacom->lock); |
| |
| return err < 0 ? err : count; |
| } |
| |
| #define DEVICE_LED_SELECT_ATTR(SET_ID) \ |
| static ssize_t wacom_led##SET_ID##_select_store(struct device *dev, \ |
| struct device_attribute *attr, const char *buf, size_t count) \ |
| { \ |
| return wacom_led_select_store(dev, SET_ID, buf, count); \ |
| } \ |
| static ssize_t wacom_led##SET_ID##_select_show(struct device *dev, \ |
| struct device_attribute *attr, char *buf) \ |
| { \ |
| struct hid_device *hdev = to_hid_device(dev);\ |
| struct wacom *wacom = hid_get_drvdata(hdev); \ |
| return scnprintf(buf, PAGE_SIZE, "%d\n", \ |
| wacom->led.groups[SET_ID].select); \ |
| } \ |
| static DEVICE_ATTR(status_led##SET_ID##_select, DEV_ATTR_RW_PERM, \ |
| wacom_led##SET_ID##_select_show, \ |
| wacom_led##SET_ID##_select_store) |
| |
| DEVICE_LED_SELECT_ATTR(0); |
| DEVICE_LED_SELECT_ATTR(1); |
| |
| static ssize_t wacom_luminance_store(struct wacom *wacom, u8 *dest, |
| const char *buf, size_t count) |
| { |
| unsigned int value; |
| int err; |
| |
| err = kstrtouint(buf, 10, &value); |
| if (err) |
| return err; |
| |
| mutex_lock(&wacom->lock); |
| |
| *dest = value & 0x7f; |
| err = wacom_led_control(wacom); |
| |
| mutex_unlock(&wacom->lock); |
| |
| return err < 0 ? err : count; |
| } |
| |
| #define DEVICE_LUMINANCE_ATTR(name, field) \ |
| static ssize_t wacom_##name##_luminance_store(struct device *dev, \ |
| struct device_attribute *attr, const char *buf, size_t count) \ |
| { \ |
| struct hid_device *hdev = to_hid_device(dev);\ |
| struct wacom *wacom = hid_get_drvdata(hdev); \ |
| \ |
| return wacom_luminance_store(wacom, &wacom->led.field, \ |
| buf, count); \ |
| } \ |
| static ssize_t wacom_##name##_luminance_show(struct device *dev, \ |
| struct device_attribute *attr, char *buf) \ |
| { \ |
| struct wacom *wacom = dev_get_drvdata(dev); \ |
| return scnprintf(buf, PAGE_SIZE, "%d\n", wacom->led.field); \ |
| } \ |
| static DEVICE_ATTR(name##_luminance, DEV_ATTR_RW_PERM, \ |
| wacom_##name##_luminance_show, \ |
| wacom_##name##_luminance_store) |
| |
| DEVICE_LUMINANCE_ATTR(status0, llv); |
| DEVICE_LUMINANCE_ATTR(status1, hlv); |
| DEVICE_LUMINANCE_ATTR(buttons, img_lum); |
| |
| static ssize_t wacom_button_image_store(struct device *dev, int button_id, |
| const char *buf, size_t count) |
| { |
| struct hid_device *hdev = to_hid_device(dev); |
| struct wacom *wacom = hid_get_drvdata(hdev); |
| int err; |
| unsigned len; |
| u8 xfer_id; |
| |
| if (hdev->bus == BUS_BLUETOOTH) { |
| len = 256; |
| xfer_id = WAC_CMD_ICON_BT_XFER; |
| } else { |
| len = 1024; |
| xfer_id = WAC_CMD_ICON_XFER; |
| } |
| |
| if (count != len) |
| return -EINVAL; |
| |
| mutex_lock(&wacom->lock); |
| |
| err = wacom_led_putimage(wacom, button_id, xfer_id, len, buf); |
| |
| mutex_unlock(&wacom->lock); |
| |
| return err < 0 ? err : count; |
| } |
| |
| #define DEVICE_BTNIMG_ATTR(BUTTON_ID) \ |
| static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev, \ |
| struct device_attribute *attr, const char *buf, size_t count) \ |
| { \ |
| return wacom_button_image_store(dev, BUTTON_ID, buf, count); \ |
| } \ |
| static DEVICE_ATTR(button##BUTTON_ID##_rawimg, DEV_ATTR_WO_PERM, \ |
| NULL, wacom_btnimg##BUTTON_ID##_store) |
| |
| DEVICE_BTNIMG_ATTR(0); |
| DEVICE_BTNIMG_ATTR(1); |
| DEVICE_BTNIMG_ATTR(2); |
| DEVICE_BTNIMG_ATTR(3); |
| DEVICE_BTNIMG_ATTR(4); |
| DEVICE_BTNIMG_ATTR(5); |
| DEVICE_BTNIMG_ATTR(6); |
| DEVICE_BTNIMG_ATTR(7); |
| |
| static struct attribute *cintiq_led_attrs[] = { |
| &dev_attr_status_led0_select.attr, |
| &dev_attr_status_led1_select.attr, |
| NULL |
| }; |
| |
| static struct attribute_group cintiq_led_attr_group = { |
| .name = "wacom_led", |
| .attrs = cintiq_led_attrs, |
| }; |
| |
| static struct attribute *intuos4_led_attrs[] = { |
| &dev_attr_status0_luminance.attr, |
| &dev_attr_status1_luminance.attr, |
| &dev_attr_status_led0_select.attr, |
| &dev_attr_buttons_luminance.attr, |
| &dev_attr_button0_rawimg.attr, |
| &dev_attr_button1_rawimg.attr, |
| &dev_attr_button2_rawimg.attr, |
| &dev_attr_button3_rawimg.attr, |
| &dev_attr_button4_rawimg.attr, |
| &dev_attr_button5_rawimg.attr, |
| &dev_attr_button6_rawimg.attr, |
| &dev_attr_button7_rawimg.attr, |
| NULL |
| }; |
| |
| static struct attribute_group intuos4_led_attr_group = { |
| .name = "wacom_led", |
| .attrs = intuos4_led_attrs, |
| }; |
| |
| static struct attribute *intuos5_led_attrs[] = { |
| &dev_attr_status0_luminance.attr, |
| &dev_attr_status_led0_select.attr, |
| NULL |
| }; |
| |
| static struct attribute_group intuos5_led_attr_group = { |
| .name = "wacom_led", |
| .attrs = intuos5_led_attrs, |
| }; |
| |
| static struct attribute *generic_led_attrs[] = { |
| &dev_attr_status0_luminance.attr, |
| &dev_attr_status_led0_select.attr, |
| NULL |
| }; |
| |
| static struct attribute_group generic_led_attr_group = { |
| .name = "wacom_led", |
| .attrs = generic_led_attrs, |
| }; |
| |
| struct wacom_sysfs_group_devres { |
| struct attribute_group *group; |
| struct kobject *root; |
| }; |
| |
| static void wacom_devm_sysfs_group_release(struct device *dev, void *res) |
| { |
| struct wacom_sysfs_group_devres *devres = res; |
| struct kobject *kobj = devres->root; |
| |
| dev_dbg(dev, "%s: dropping reference to %s\n", |
| __func__, devres->group->name); |
| sysfs_remove_group(kobj, devres->group); |
| } |
| |
| static int __wacom_devm_sysfs_create_group(struct wacom *wacom, |
| struct kobject *root, |
| struct attribute_group *group) |
| { |
| struct wacom_sysfs_group_devres *devres; |
| int error; |
| |
| devres = devres_alloc(wacom_devm_sysfs_group_release, |
| sizeof(struct wacom_sysfs_group_devres), |
| GFP_KERNEL); |
| if (!devres) |
| return -ENOMEM; |
| |
| devres->group = group; |
| devres->root = root; |
| |
| error = sysfs_create_group(devres->root, group); |
| if (error) { |
| devres_free(devres); |
| return error; |
| } |
| |
| devres_add(&wacom->hdev->dev, devres); |
| |
| return 0; |
| } |
| |
| static int wacom_devm_sysfs_create_group(struct wacom *wacom, |
| struct attribute_group *group) |
| { |
| return __wacom_devm_sysfs_create_group(wacom, &wacom->hdev->dev.kobj, |
| group); |
| } |
| |
| enum led_brightness wacom_leds_brightness_get(struct wacom_led *led) |
| { |
| struct wacom *wacom = led->wacom; |
| |
| if (wacom->led.max_hlv) |
| return led->hlv * LED_FULL / wacom->led.max_hlv; |
| |
| if (wacom->led.max_llv) |
| return led->llv * LED_FULL / wacom->led.max_llv; |
| |
| /* device doesn't support brightness tuning */ |
| return LED_FULL; |
| } |
| |
| static enum led_brightness __wacom_led_brightness_get(struct led_classdev *cdev) |
| { |
| struct wacom_led *led = container_of(cdev, struct wacom_led, cdev); |
| struct wacom *wacom = led->wacom; |
| |
| if (wacom->led.groups[led->group].select != led->id) |
| return LED_OFF; |
| |
| return wacom_leds_brightness_get(led); |
| } |
| |
| static int wacom_led_brightness_set(struct led_classdev *cdev, |
| enum led_brightness brightness) |
| { |
| struct wacom_led *led = container_of(cdev, struct wacom_led, cdev); |
| struct wacom *wacom = led->wacom; |
| int error; |
| |
| mutex_lock(&wacom->lock); |
| |
| if (!wacom->led.groups || (brightness == LED_OFF && |
| wacom->led.groups[led->group].select != led->id)) { |
| error = 0; |
| goto out; |
| } |
| |
| led->llv = wacom->led.llv = wacom->led.max_llv * brightness / LED_FULL; |
| led->hlv = wacom->led.hlv = wacom->led.max_hlv * brightness / LED_FULL; |
| |
| wacom->led.groups[led->group].select = led->id; |
| |
| error = wacom_led_control(wacom); |
| |
| out: |
| mutex_unlock(&wacom->lock); |
| |
| return error; |
| } |
| |
| static void wacom_led_readonly_brightness_set(struct led_classdev *cdev, |
| enum led_brightness brightness) |
| { |
| } |
| |
| static int wacom_led_register_one(struct device *dev, struct wacom *wacom, |
| struct wacom_led *led, unsigned int group, |
| unsigned int id, bool read_only) |
| { |
| int error; |
| char *name; |
| |
| name = devm_kasprintf(dev, GFP_KERNEL, |
| "%s::wacom-%d.%d", |
| dev_name(dev), |
| group, |
| id); |
| if (!name) |
| return -ENOMEM; |
| |
| if (!read_only) { |
| led->trigger.name = name; |
| error = devm_led_trigger_register(dev, &led->trigger); |
| if (error) { |
| hid_err(wacom->hdev, |
| "failed to register LED trigger %s: %d\n", |
| led->cdev.name, error); |
| return error; |
| } |
| } |
| |
| led->group = group; |
| led->id = id; |
| led->wacom = wacom; |
| led->llv = wacom->led.llv; |
| led->hlv = wacom->led.hlv; |
| led->cdev.name = name; |
| led->cdev.max_brightness = LED_FULL; |
| led->cdev.flags = LED_HW_PLUGGABLE; |
| led->cdev.brightness_get = __wacom_led_brightness_get; |
| if (!read_only) { |
| led->cdev.brightness_set_blocking = wacom_led_brightness_set; |
| led->cdev.default_trigger = led->cdev.name; |
| } else { |
| led->cdev.brightness_set = wacom_led_readonly_brightness_set; |
| } |
| |
| error = devm_led_classdev_register(dev, &led->cdev); |
| if (error) { |
| hid_err(wacom->hdev, |
| "failed to register LED %s: %d\n", |
| led->cdev.name, error); |
| led->cdev.name = NULL; |
| return error; |
| } |
| |
| return 0; |
| } |
| |
| static void wacom_led_groups_release_one(void *data) |
| { |
| struct wacom_group_leds *group = data; |
| |
| devres_release_group(group->dev, group); |
| } |
| |
| static int wacom_led_groups_alloc_and_register_one(struct device *dev, |
| struct wacom *wacom, |
| int group_id, int count, |
| bool read_only) |
| { |
| struct wacom_led *leds; |
| int i, error; |
| |
| if (group_id >= wacom->led.count || count <= 0) |
| return -EINVAL; |
| |
| if (!devres_open_group(dev, &wacom->led.groups[group_id], GFP_KERNEL)) |
| return -ENOMEM; |
| |
| leds = devm_kzalloc(dev, sizeof(struct wacom_led) * count, GFP_KERNEL); |
| if (!leds) { |
| error = -ENOMEM; |
| goto err; |
| } |
| |
| wacom->led.groups[group_id].leds = leds; |
| wacom->led.groups[group_id].count = count; |
| |
| for (i = 0; i < count; i++) { |
| error = wacom_led_register_one(dev, wacom, &leds[i], |
| group_id, i, read_only); |
| if (error) |
| goto err; |
| } |
| |
| wacom->led.groups[group_id].dev = dev; |
| |
| devres_close_group(dev, &wacom->led.groups[group_id]); |
| |
| /* |
| * There is a bug (?) in devm_led_classdev_register() in which its |
| * increments the refcount of the parent. If the parent is an input |
| * device, that means the ref count never reaches 0 when |
| * devm_input_device_release() gets called. |
| * This means that the LEDs are still there after disconnect. |
| * Manually force the release of the group so that the leds are released |
| * once we are done using them. |
| */ |
| error = devm_add_action_or_reset(&wacom->hdev->dev, |
| wacom_led_groups_release_one, |
| &wacom->led.groups[group_id]); |
| if (error) |
| return error; |
| |
| return 0; |
| |
| err: |
| devres_release_group(dev, &wacom->led.groups[group_id]); |
| return error; |
| } |
| |
| struct wacom_led *wacom_led_find(struct wacom *wacom, unsigned int group_id, |
| unsigned int id) |
| { |
| struct wacom_group_leds *group; |
| |
| if (group_id >= wacom->led.count) |
| return NULL; |
| |
| group = &wacom->led.groups[group_id]; |
| |
| if (!group->leds) |
| return NULL; |
| |
| id %= group->count; |
| |
| return &group->leds[id]; |
| } |
| |
| /** |
| * wacom_led_next: gives the next available led with a wacom trigger. |
| * |
| * returns the next available struct wacom_led which has its default trigger |
| * or the current one if none is available. |
| */ |
| struct wacom_led *wacom_led_next(struct wacom *wacom, struct wacom_led *cur) |
| { |
| struct wacom_led *next_led; |
| int group, next; |
| |
| if (!wacom || !cur) |
| return NULL; |
| |
| group = cur->group; |
| next = cur->id; |
| |
| do { |
| next_led = wacom_led_find(wacom, group, ++next); |
| if (!next_led || next_led == cur) |
| return next_led; |
| } while (next_led->cdev.trigger != &next_led->trigger); |
| |
| return next_led; |
| } |
| |
| static void wacom_led_groups_release(void *data) |
| { |
| struct wacom *wacom = data; |
| |
| wacom->led.groups = NULL; |
| wacom->led.count = 0; |
| } |
| |
| static int wacom_led_groups_allocate(struct wacom *wacom, int count) |
| { |
| struct device *dev = &wacom->hdev->dev; |
| struct wacom_group_leds *groups; |
| int error; |
| |
| groups = devm_kzalloc(dev, sizeof(struct wacom_group_leds) * count, |
| GFP_KERNEL); |
| if (!groups) |
| return -ENOMEM; |
| |
| error = devm_add_action_or_reset(dev, wacom_led_groups_release, wacom); |
| if (error) |
| return error; |
| |
| wacom->led.groups = groups; |
| wacom->led.count = count; |
| |
| return 0; |
| } |
| |
| static int wacom_leds_alloc_and_register(struct wacom *wacom, int group_count, |
| int led_per_group, bool read_only) |
| { |
| struct device *dev; |
| int i, error; |
| |
| if (!wacom->wacom_wac.pad_input) |
| return -EINVAL; |
| |
| dev = &wacom->wacom_wac.pad_input->dev; |
| |
| error = wacom_led_groups_allocate(wacom, group_count); |
| if (error) |
| return error; |
| |
| for (i = 0; i < group_count; i++) { |
| error = wacom_led_groups_alloc_and_register_one(dev, wacom, i, |
| led_per_group, |
| read_only); |
| if (error) |
| return error; |
| } |
| |
| return 0; |
| } |
| |
| int wacom_initialize_leds(struct wacom *wacom) |
| { |
| int error; |
| |
| if (!(wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD)) |
| return 0; |
| |
| /* Initialize default values */ |
| switch (wacom->wacom_wac.features.type) { |
| case HID_GENERIC: |
| if (!wacom->generic_has_leds) |
| return 0; |
| wacom->led.llv = 100; |
| wacom->led.max_llv = 100; |
| |
| error = wacom_leds_alloc_and_register(wacom, 1, 4, false); |
| if (error) { |
| hid_err(wacom->hdev, |
| "cannot create leds err: %d\n", error); |
| return error; |
| } |
| |
| error = wacom_devm_sysfs_create_group(wacom, |
| &generic_led_attr_group); |
| break; |
| |
| case INTUOS4S: |
| case INTUOS4: |
| case INTUOS4WL: |
| case INTUOS4L: |
| wacom->led.llv = 10; |
| wacom->led.hlv = 20; |
| wacom->led.max_llv = 127; |
| wacom->led.max_hlv = 127; |
| wacom->led.img_lum = 10; |
| |
| error = wacom_leds_alloc_and_register(wacom, 1, 4, false); |
| if (error) { |
| hid_err(wacom->hdev, |
| "cannot create leds err: %d\n", error); |
| return error; |
| } |
| |
| error = wacom_devm_sysfs_create_group(wacom, |
| &intuos4_led_attr_group); |
| break; |
| |
| case WACOM_24HD: |
| case WACOM_21UX2: |
| wacom->led.llv = 0; |
| wacom->led.hlv = 0; |
| wacom->led.img_lum = 0; |
| |
| error = wacom_leds_alloc_and_register(wacom, 2, 4, false); |
| if (error) { |
| hid_err(wacom->hdev, |
| "cannot create leds err: %d\n", error); |
| return error; |
| } |
| |
| error = wacom_devm_sysfs_create_group(wacom, |
| &cintiq_led_attr_group); |
| break; |
| |
| case INTUOS5S: |
| case INTUOS5: |
| case INTUOS5L: |
| case INTUOSPS: |
| case INTUOSPM: |
| case INTUOSPL: |
| wacom->led.llv = 32; |
| wacom->led.max_llv = 96; |
| |
| error = wacom_leds_alloc_and_register(wacom, 1, 4, false); |
| if (error) { |
| hid_err(wacom->hdev, |
| "cannot create leds err: %d\n", error); |
| return error; |
| } |
| |
| error = wacom_devm_sysfs_create_group(wacom, |
| &intuos5_led_attr_group); |
| break; |
| |
| case INTUOSP2_BT: |
| wacom->led.llv = 50; |
| wacom->led.max_llv = 100; |
| error = wacom_leds_alloc_and_register(wacom, 1, 4, false); |
| if (error) { |
| hid_err(wacom->hdev, |
| "cannot create leds err: %d\n", error); |
| return error; |
| } |
| return 0; |
| |
| case REMOTE: |
| wacom->led.llv = 255; |
| wacom->led.max_llv = 255; |
| error = wacom_led_groups_allocate(wacom, 5); |
| if (error) { |
| hid_err(wacom->hdev, |
| "cannot create leds err: %d\n", error); |
| return error; |
| } |
| return 0; |
| |
| default: |
| return 0; |
| } |
| |
| if (error) { |
| hid_err(wacom->hdev, |
| "cannot create sysfs group err: %d\n", error); |
| return error; |
| } |
| |
| return 0; |
| } |
| |
| static void wacom_init_work(struct work_struct *work) |
| { |
| struct wacom *wacom = container_of(work, struct wacom, init_work.work); |
| |
| _wacom_query_tablet_data(wacom); |
| wacom_led_control(wacom); |
| } |
| |
| static void wacom_query_tablet_data(struct wacom *wacom) |
| { |
| schedule_delayed_work(&wacom->init_work, msecs_to_jiffies(1000)); |
| } |
| |
| static enum power_supply_property wacom_battery_props[] = { |
| POWER_SUPPLY_PROP_MODEL_NAME, |
| POWER_SUPPLY_PROP_PRESENT, |
| POWER_SUPPLY_PROP_STATUS, |
| POWER_SUPPLY_PROP_SCOPE, |
| POWER_SUPPLY_PROP_CAPACITY |
| }; |
| |
| static int wacom_battery_get_property(struct power_supply *psy, |
| enum power_supply_property psp, |
| union power_supply_propval *val) |
| { |
| struct wacom_battery *battery = power_supply_get_drvdata(psy); |
| int ret = 0; |
| |
| switch (psp) { |
| case POWER_SUPPLY_PROP_MODEL_NAME: |
| val->strval = battery->wacom->wacom_wac.name; |
| break; |
| case POWER_SUPPLY_PROP_PRESENT: |
| val->intval = battery->bat_connected; |
| break; |
| case POWER_SUPPLY_PROP_SCOPE: |
| val->intval = POWER_SUPPLY_SCOPE_DEVICE; |
| break; |
| case POWER_SUPPLY_PROP_CAPACITY: |
| val->intval = battery->battery_capacity; |
| break; |
| case POWER_SUPPLY_PROP_STATUS: |
| if (battery->bat_status != WACOM_POWER_SUPPLY_STATUS_AUTO) |
| val->intval = battery->bat_status; |
| else if (battery->bat_charging) |
| val->intval = POWER_SUPPLY_STATUS_CHARGING; |
| else if (battery->battery_capacity == 100 && |
| battery->ps_connected) |
| val->intval = POWER_SUPPLY_STATUS_FULL; |
| else if (battery->ps_connected) |
| val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; |
| else |
| val->intval = POWER_SUPPLY_STATUS_DISCHARGING; |
| break; |
| default: |
| ret = -EINVAL; |
| break; |
| } |
| |
| return ret; |
| } |
| |
| static int __wacom_initialize_battery(struct wacom *wacom, |
| struct wacom_battery *battery) |
| { |
| static atomic_t battery_no = ATOMIC_INIT(0); |
| struct device *dev = &wacom->hdev->dev; |
| struct power_supply_config psy_cfg = { .drv_data = battery, }; |
| struct power_supply *ps_bat; |
| struct power_supply_desc *bat_desc = &battery->bat_desc; |
| unsigned long n; |
| int error; |
| |
| if (!devres_open_group(dev, bat_desc, GFP_KERNEL)) |
| return -ENOMEM; |
| |
| battery->wacom = wacom; |
| |
| n = atomic_inc_return(&battery_no) - 1; |
| |
| bat_desc->properties = wacom_battery_props; |
| bat_desc->num_properties = ARRAY_SIZE(wacom_battery_props); |
| bat_desc->get_property = wacom_battery_get_property; |
| sprintf(battery->bat_name, "wacom_battery_%ld", n); |
| bat_desc->name = battery->bat_name; |
| bat_desc->type = POWER_SUPPLY_TYPE_USB; |
| bat_desc->use_for_apm = 0; |
| |
| ps_bat = devm_power_supply_register(dev, bat_desc, &psy_cfg); |
| if (IS_ERR(ps_bat)) { |
| error = PTR_ERR(ps_bat); |
| goto err; |
| } |
| |
| power_supply_powers(ps_bat, &wacom->hdev->dev); |
| |
| battery->battery = ps_bat; |
| |
| devres_close_group(dev, bat_desc); |
| return 0; |
| |
| err: |
| devres_release_group(dev, bat_desc); |
| return error; |
| } |
| |
| static int wacom_initialize_battery(struct wacom *wacom) |
| { |
| if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) |
| return __wacom_initialize_battery(wacom, &wacom->battery); |
| |
| return 0; |
| } |
| |
| static void wacom_destroy_battery(struct wacom *wacom) |
| { |
| if (wacom->battery.battery) { |
| devres_release_group(&wacom->hdev->dev, |
| &wacom->battery.bat_desc); |
| wacom->battery.battery = NULL; |
| } |
| } |
| |
| static ssize_t wacom_show_speed(struct device *dev, |
| struct device_attribute |
| *attr, char *buf) |
| { |
| struct hid_device *hdev = to_hid_device(dev); |
| struct wacom *wacom = hid_get_drvdata(hdev); |
| |
| return snprintf(buf, PAGE_SIZE, "%i\n", wacom->wacom_wac.bt_high_speed); |
| } |
| |
| static ssize_t wacom_store_speed(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct hid_device *hdev = to_hid_device(dev); |
| struct wacom *wacom = hid_get_drvdata(hdev); |
| u8 new_speed; |
| |
| if (kstrtou8(buf, 0, &new_speed)) |
| return -EINVAL; |
| |
| if (new_speed != 0 && new_speed != 1) |
| return -EINVAL; |
| |
| wacom_bt_query_tablet_data(hdev, new_speed, &wacom->wacom_wac.features); |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(speed, DEV_ATTR_RW_PERM, |
| wacom_show_speed, wacom_store_speed); |
| |
| |
| static ssize_t wacom_show_remote_mode(struct kobject *kobj, |
| struct kobj_attribute *kattr, |
| char *buf, int index) |
| { |
| struct device *dev = kobj_to_dev(kobj->parent); |
| struct hid_device *hdev = to_hid_device(dev); |
| struct wacom *wacom = hid_get_drvdata(hdev); |
| u8 mode; |
| |
| mode = wacom->led.groups[index].select; |
| return sprintf(buf, "%d\n", mode < 3 ? mode : -1); |
| } |
| |
| #define DEVICE_EKR_ATTR_GROUP(SET_ID) \ |
| static ssize_t wacom_show_remote##SET_ID##_mode(struct kobject *kobj, \ |
| struct kobj_attribute *kattr, char *buf) \ |
| { \ |
| return wacom_show_remote_mode(kobj, kattr, buf, SET_ID); \ |
| } \ |
| static struct kobj_attribute remote##SET_ID##_mode_attr = { \ |
| .attr = {.name = "remote_mode", \ |
| .mode = DEV_ATTR_RO_PERM}, \ |
| .show = wacom_show_remote##SET_ID##_mode, \ |
| }; \ |
| static struct attribute *remote##SET_ID##_serial_attrs[] = { \ |
| &remote##SET_ID##_mode_attr.attr, \ |
| NULL \ |
| }; \ |
| static struct attribute_group remote##SET_ID##_serial_group = { \ |
| .name = NULL, \ |
| .attrs = remote##SET_ID##_serial_attrs, \ |
| } |
| |
| DEVICE_EKR_ATTR_GROUP(0); |
| DEVICE_EKR_ATTR_GROUP(1); |
| DEVICE_EKR_ATTR_GROUP(2); |
| DEVICE_EKR_ATTR_GROUP(3); |
| DEVICE_EKR_ATTR_GROUP(4); |
| |
| static int wacom_remote_create_attr_group(struct wacom *wacom, __u32 serial, |
| int index) |
| { |
| int error = 0; |
| struct wacom_remote *remote = wacom->remote; |
| |
| remote->remotes[index].group.name = devm_kasprintf(&wacom->hdev->dev, |
| GFP_KERNEL, |
| "%d", serial); |
| if (!remote->remotes[index].group.name) |
| return -ENOMEM; |
| |
| error = __wacom_devm_sysfs_create_group(wacom, remote->remote_dir, |
| &remote->remotes[index].group); |
| if (error) { |
| remote->remotes[index].group.name = NULL; |
| hid_err(wacom->hdev, |
| "cannot create sysfs group err: %d\n", error); |
| return error; |
| } |
| |
| return 0; |
| } |
| |
| static int wacom_cmd_unpair_remote(struct wacom *wacom, unsigned char selector) |
| { |
| const size_t buf_size = 2; |
| unsigned char *buf; |
| int retval; |
| |
| buf = kzalloc(buf_size, GFP_KERNEL); |
| if (!buf) |
| return -ENOMEM; |
| |
| buf[0] = WAC_CMD_DELETE_PAIRING; |
| buf[1] = selector; |
| |
| retval = wacom_set_report(wacom->hdev, HID_OUTPUT_REPORT, buf, |
| buf_size, WAC_CMD_RETRIES); |
| kfree(buf); |
| |
| return retval; |
| } |
| |
| static ssize_t wacom_store_unpair_remote(struct kobject *kobj, |
| struct kobj_attribute *attr, |
| const char *buf, size_t count) |
| { |
| unsigned char selector = 0; |
| struct device *dev = kobj_to_dev(kobj->parent); |
| struct hid_device *hdev = to_hid_device(dev); |
| struct wacom *wacom = hid_get_drvdata(hdev); |
| int err; |
| |
| if (!strncmp(buf, "*\n", 2)) { |
| selector = WAC_CMD_UNPAIR_ALL; |
| } else { |
| hid_info(wacom->hdev, "remote: unrecognized unpair code: %s\n", |
| buf); |
| return -1; |
| } |
| |
| mutex_lock(&wacom->lock); |
| |
| err = wacom_cmd_unpair_remote(wacom, selector); |
| mutex_unlock(&wacom->lock); |
| |
| return err < 0 ? err : count; |
| } |
| |
| static struct kobj_attribute unpair_remote_attr = { |
| .attr = {.name = "unpair_remote", .mode = 0200}, |
| .store = wacom_store_unpair_remote, |
| }; |
| |
| static const struct attribute *remote_unpair_attrs[] = { |
| &unpair_remote_attr.attr, |
| NULL |
| }; |
| |
| static void wacom_remotes_destroy(void *data) |
| { |
| struct wacom *wacom = data; |
| struct wacom_remote *remote = wacom->remote; |
| |
| if (!remote) |
| return; |
| |
| kobject_put(remote->remote_dir); |
| kfifo_free(&remote->remote_fifo); |
| wacom->remote = NULL; |
| } |
| |
| static int wacom_initialize_remotes(struct wacom *wacom) |
| { |
| int error = 0; |
| struct wacom_remote *remote; |
| int i; |
| |
| if (wacom->wacom_wac.features.type != REMOTE) |
| return 0; |
| |
| remote = devm_kzalloc(&wacom->hdev->dev, sizeof(*wacom->remote), |
| GFP_KERNEL); |
| if (!remote) |
| return -ENOMEM; |
| |
| wacom->remote = remote; |
| |
| spin_lock_init(&remote->remote_lock); |
| |
| error = kfifo_alloc(&remote->remote_fifo, |
| 5 * sizeof(struct wacom_remote_data), |
| GFP_KERNEL); |
| if (error) { |
| hid_err(wacom->hdev, "failed allocating remote_fifo\n"); |
| return -ENOMEM; |
| } |
| |
| remote->remotes[0].group = remote0_serial_group; |
| remote->remotes[1].group = remote1_serial_group; |
| remote->remotes[2].group = remote2_serial_group; |
| remote->remotes[3].group = remote3_serial_group; |
| remote->remotes[4].group = remote4_serial_group; |
| |
| remote->remote_dir = kobject_create_and_add("wacom_remote", |
| &wacom->hdev->dev.kobj); |
| if (!remote->remote_dir) |
| return -ENOMEM; |
| |
| error = sysfs_create_files(remote->remote_dir, remote_unpair_attrs); |
| |
| if (error) { |
| hid_err(wacom->hdev, |
| "cannot create sysfs group err: %d\n", error); |
| return error; |
| } |
| |
| for (i = 0; i < WACOM_MAX_REMOTES; i++) { |
| wacom->led.groups[i].select = WACOM_STATUS_UNKNOWN; |
| remote->remotes[i].serial = 0; |
| } |
| |
| error = devm_add_action_or_reset(&wacom->hdev->dev, |
| wacom_remotes_destroy, wacom); |
| if (error) |
| return error; |
| |
| return 0; |
| } |
| |
| static struct input_dev *wacom_allocate_input(struct wacom *wacom) |
| { |
| struct input_dev *input_dev; |
| struct hid_device *hdev = wacom->hdev; |
| struct wacom_wac *wacom_wac = &(wacom->wacom_wac); |
| |
| input_dev = devm_input_allocate_device(&hdev->dev); |
| if (!input_dev) |
| return NULL; |
| |
| input_dev->name = wacom_wac->features.name; |
| input_dev->phys = hdev->phys; |
| input_dev->dev.parent = &hdev->dev; |
| input_dev->open = wacom_open; |
| input_dev->close = wacom_close; |
| input_dev->uniq = hdev->uniq; |
| input_dev->id.bustype = hdev->bus; |
| input_dev->id.vendor = hdev->vendor; |
| input_dev->id.product = wacom_wac->pid ? wacom_wac->pid : hdev->product; |
| input_dev->id.version = hdev->version; |
| input_set_drvdata(input_dev, wacom); |
| |
| return input_dev; |
| } |
| |
| static int wacom_allocate_inputs(struct wacom *wacom) |
| { |
| struct wacom_wac *wacom_wac = &(wacom->wacom_wac); |
| |
| wacom_wac->pen_input = wacom_allocate_input(wacom); |
| wacom_wac->touch_input = wacom_allocate_input(wacom); |
| wacom_wac->pad_input = wacom_allocate_input(wacom); |
| if (!wacom_wac->pen_input || |
| !wacom_wac->touch_input || |
| !wacom_wac->pad_input) |
| return -ENOMEM; |
| |
| wacom_wac->pen_input->name = wacom_wac->pen_name; |
| wacom_wac->touch_input->name = wacom_wac->touch_name; |
| wacom_wac->pad_input->name = wacom_wac->pad_name; |
| |
| return 0; |
| } |
| |
| static int wacom_setup_inputs(struct wacom *wacom) |
| { |
| struct input_dev *pen_input_dev, *touch_input_dev, *pad_input_dev; |
| struct wacom_wac *wacom_wac = &(wacom->wacom_wac); |
| int error = 0; |
| |
| pen_input_dev = wacom_wac->pen_input; |
| touch_input_dev = wacom_wac->touch_input; |
| pad_input_dev = wacom_wac->pad_input; |
| |
| if (!pen_input_dev || !touch_input_dev || !pad_input_dev) |
| return -EINVAL; |
| |
| error = wacom_setup_pen_input_capabilities(pen_input_dev, wacom_wac); |
| if (error) { |
| /* no pen in use on this interface */ |
| input_free_device(pen_input_dev); |
| wacom_wac->pen_input = NULL; |
| pen_input_dev = NULL; |
| } |
| |
| error = wacom_setup_touch_input_capabilities(touch_input_dev, wacom_wac); |
| if (error) { |
| /* no touch in use on this interface */ |
| input_free_device(touch_input_dev); |
| wacom_wac->touch_input = NULL; |
| touch_input_dev = NULL; |
| } |
| |
| error = wacom_setup_pad_input_capabilities(pad_input_dev, wacom_wac); |
| if (error) { |
| /* no pad events using this interface */ |
| input_free_device(pad_input_dev); |
| wacom_wac->pad_input = NULL; |
| pad_input_dev = NULL; |
| } |
| |
| return 0; |
| } |
| |
| static int wacom_register_inputs(struct wacom *wacom) |
| { |
| struct input_dev *pen_input_dev, *touch_input_dev, *pad_input_dev; |
| struct wacom_wac *wacom_wac = &(wacom->wacom_wac); |
| int error = 0; |
| |
| pen_input_dev = wacom_wac->pen_input; |
| touch_input_dev = wacom_wac->touch_input; |
| pad_input_dev = wacom_wac->pad_input; |
| |
| if (pen_input_dev) { |
| error = input_register_device(pen_input_dev); |
| if (error) |
| goto fail; |
| } |
| |
| if (touch_input_dev) { |
| error = input_register_device(touch_input_dev); |
| if (error) |
| goto fail; |
| } |
| |
| if (pad_input_dev) { |
| error = input_register_device(pad_input_dev); |
| if (error) |
| goto fail; |
| } |
| |
| return 0; |
| |
| fail: |
| wacom_wac->pad_input = NULL; |
| wacom_wac->touch_input = NULL; |
| wacom_wac->pen_input = NULL; |
| return error; |
| } |
| |
| /* |
| * Not all devices report physical dimensions from HID. |
| * Compute the default from hardcoded logical dimension |
| * and resolution before driver overwrites them. |
| */ |
| static void wacom_set_default_phy(struct wacom_features *features) |
| { |
| if (features->x_resolution) { |
| features->x_phy = (features->x_max * 100) / |
| features->x_resolution; |
| features->y_phy = (features->y_max * 100) / |
| features->y_resolution; |
| } |
| } |
| |
| static void wacom_calculate_res(struct wacom_features *features) |
| { |
| /* set unit to "100th of a mm" for devices not reported by HID */ |
| if (!features->unit) { |
| features->unit = 0x11; |
| features->unitExpo = -3; |
| } |
| |
| features->x_resolution = wacom_calc_hid_res(features->x_max, |
| features->x_phy, |
| features->unit, |
| features->unitExpo); |
| features->y_resolution = wacom_calc_hid_res(features->y_max, |
| features->y_phy, |
| features->unit, |
| features->unitExpo); |
| } |
| |
| void wacom_battery_work(struct work_struct *work) |
| { |
| struct wacom *wacom = container_of(work, struct wacom, battery_work); |
| |
| if ((wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) && |
| !wacom->battery.battery) { |
| wacom_initialize_battery(wacom); |
| } |
| else if (!(wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) && |
| wacom->battery.battery) { |
| wacom_destroy_battery(wacom); |
| } |
| } |
| |
| static size_t wacom_compute_pktlen(struct hid_device *hdev) |
| { |
| struct hid_report_enum *report_enum; |
| struct hid_report *report; |
| size_t size = 0; |
| |
| report_enum = hdev->report_enum + HID_INPUT_REPORT; |
| |
| list_for_each_entry(report, &report_enum->report_list, list) { |
| size_t report_size = hid_report_len(report); |
| if (report_size > size) |
| size = report_size; |
| } |
| |
| return size; |
| } |
| |
| static void wacom_update_name(struct wacom *wacom, const char *suffix) |
| { |
| struct wacom_wac *wacom_wac = &wacom->wacom_wac; |
| struct wacom_features *features = &wacom_wac->features; |
| char name[WACOM_NAME_MAX]; |
| |
| /* Generic devices name unspecified */ |
| if ((features->type == HID_GENERIC) && !strcmp("Wacom HID", features->name)) { |
| char *product_name = wacom->hdev->name; |
| |
| if (hid_is_usb(wacom->hdev)) { |
| struct usb_interface *intf = to_usb_interface(wacom->hdev->dev.parent); |
| struct usb_device *dev = interface_to_usbdev(intf); |
| product_name = dev->product; |
| } |
| |
| if (wacom->hdev->bus == BUS_I2C) { |
| snprintf(name, sizeof(name), "%s %X", |
| features->name, wacom->hdev->product); |
| } else if (strstr(product_name, "Wacom") || |
| strstr(product_name, "wacom") || |
| strstr(product_name, "WACOM")) { |
| strlcpy(name, product_name, sizeof(name)); |
| } else { |
| snprintf(name, sizeof(name), "Wacom %s", product_name); |
| } |
| |
| /* strip out excess whitespaces */ |
| while (1) { |
| char *gap = strstr(name, " "); |
| if (gap == NULL) |
| break; |
| /* shift everything including the terminator */ |
| memmove(gap, gap+1, strlen(gap)); |
| } |
| |
| /* get rid of trailing whitespace */ |
| if (name[strlen(name)-1] == ' ') |
| name[strlen(name)-1] = '\0'; |
| } else { |
| strlcpy(name, features->name, sizeof(name)); |
| } |
| |
| snprintf(wacom_wac->name, sizeof(wacom_wac->name), "%s%s", |
| name, suffix); |
| |
| /* Append the device type to the name */ |
| snprintf(wacom_wac->pen_name, sizeof(wacom_wac->pen_name), |
| "%s%s Pen", name, suffix); |
| snprintf(wacom_wac->touch_name, sizeof(wacom_wac->touch_name), |
| "%s%s Finger", name, suffix); |
| snprintf(wacom_wac->pad_name, sizeof(wacom_wac->pad_name), |
| "%s%s Pad", name, suffix); |
| } |
| |
| static void wacom_release_resources(struct wacom *wacom) |
| { |
| struct hid_device *hdev = wacom->hdev; |
| |
| if (!wacom->resources) |
| return; |
| |
| devres_release_group(&hdev->dev, wacom); |
| |
| wacom->resources = false; |
| |
| wacom->wacom_wac.pen_input = NULL; |
| wacom->wacom_wac.touch_input = NULL; |
| wacom->wacom_wac.pad_input = NULL; |
| } |
| |
| static void wacom_set_shared_values(struct wacom_wac *wacom_wac) |
| { |
| if (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH) { |
| wacom_wac->shared->type = wacom_wac->features.type; |
| wacom_wac->shared->touch_input = wacom_wac->touch_input; |
| } |
| |
| if (wacom_wac->has_mute_touch_switch) { |
| wacom_wac->shared->has_mute_touch_switch = true; |
| wacom_wac->shared->is_touch_on = true; |
| } |
| |
| if (wacom_wac->shared->has_mute_touch_switch && |
| wacom_wac->shared->touch_input) { |
| set_bit(EV_SW, wacom_wac->shared->touch_input->evbit); |
| input_set_capability(wacom_wac->shared->touch_input, EV_SW, |
| SW_MUTE_DEVICE); |
| } |
| } |
| |
| static int wacom_parse_and_register(struct wacom *wacom, bool wireless) |
| { |
| struct wacom_wac *wacom_wac = &wacom->wacom_wac; |
| struct wacom_features *features = &wacom_wac->features; |
| struct hid_device *hdev = wacom->hdev; |
| int error; |
| unsigned int connect_mask = HID_CONNECT_HIDRAW; |
| |
| features->pktlen = wacom_compute_pktlen(hdev); |
| if (features->pktlen > WACOM_PKGLEN_MAX) |
| return -EINVAL; |
| |
| if (!devres_open_group(&hdev->dev, wacom, GFP_KERNEL)) |
| return -ENOMEM; |
| |
| wacom->resources = true; |
| |
| error = wacom_allocate_inputs(wacom); |
| if (error) |
| goto fail; |
| |
| /* |
| * Bamboo Pad has a generic hid handling for the Pen, and we switch it |
| * into debug mode for the touch part. |
| * We ignore the other interfaces. |
| */ |
| if (features->type == BAMBOO_PAD) { |
| if (features->pktlen == WACOM_PKGLEN_PENABLED) { |
| features->type = HID_GENERIC; |
| } else if ((features->pktlen != WACOM_PKGLEN_BPAD_TOUCH) && |
| (features->pktlen != WACOM_PKGLEN_BPAD_TOUCH_USB)) { |
| error = -ENODEV; |
| goto fail; |
| } |
| } |
| |
| /* set the default size in case we do not get them from hid */ |
| wacom_set_default_phy(features); |
| |
| /* Retrieve the physical and logical size for touch devices */ |
| wacom_retrieve_hid_descriptor(hdev, features); |
| wacom_setup_device_quirks(wacom); |
| |
| if (features->device_type == WACOM_DEVICETYPE_NONE && |
| features->type != WIRELESS) { |
| error = features->type == HID_GENERIC ? -ENODEV : 0; |
| |
| dev_warn(&hdev->dev, "Unknown device_type for '%s'. %s.", |
| hdev->name, |
| error ? "Ignoring" : "Assuming pen"); |
| |
| if (error) |
| goto fail; |
| |
| features->device_type |= WACOM_DEVICETYPE_PEN; |
| } |
| |
| wacom_calculate_res(features); |
| |
| wacom_update_name(wacom, wireless ? " (WL)" : ""); |
| |
| /* pen only Bamboo neither support touch nor pad */ |
| if ((features->type == BAMBOO_PEN) && |
| ((features->device_type & WACOM_DEVICETYPE_TOUCH) || |
| (features->device_type & WACOM_DEVICETYPE_PAD))) { |
| error = -ENODEV; |
| goto fail; |
| } |
| |
| error = wacom_add_shared_data(hdev); |
| if (error) |
| goto fail; |
| |
| if (!(features->device_type & WACOM_DEVICETYPE_WL_MONITOR) && |
| (features->quirks & WACOM_QUIRK_BATTERY)) { |
| error = wacom_initialize_battery(wacom); |
| if (error) |
| goto fail; |
| } |
| |
| error = wacom_setup_inputs(wacom); |
| if (error) |
| goto fail; |
| |
| if (features->type == HID_GENERIC) |
| connect_mask |= HID_CONNECT_DRIVER; |
| |
| /* Regular HID work starts now */ |
| error = hid_hw_start(hdev, connect_mask); |
| if (error) { |
| hid_err(hdev, "hw start failed\n"); |
| goto fail; |
| } |
| |
| error = wacom_register_inputs(wacom); |
| if (error) |
| goto fail; |
| |
| if (wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD) { |
| error = wacom_initialize_leds(wacom); |
| if (error) |
| goto fail; |
| |
| error = wacom_initialize_remotes(wacom); |
| if (error) |
| goto fail; |
| } |
| |
| if (!wireless) { |
| /* Note that if query fails it is not a hard failure */ |
| wacom_query_tablet_data(wacom); |
| } |
| |
| /* touch only Bamboo doesn't support pen */ |
| if ((features->type == BAMBOO_TOUCH) && |
| (features->device_type & WACOM_DEVICETYPE_PEN)) { |
| cancel_delayed_work_sync(&wacom->init_work); |
| _wacom_query_tablet_data(wacom); |
| error = -ENODEV; |
| goto fail_quirks; |
| } |
| |
| if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR) { |
| error = hid_hw_open(hdev); |
| if (error) { |
| hid_err(hdev, "hw open failed\n"); |
| goto fail_quirks; |
| } |
| } |
| |
| wacom_set_shared_values(wacom_wac); |
| devres_close_group(&hdev->dev, wacom); |
| |
| return 0; |
| |
| fail_quirks: |
| hid_hw_stop(hdev); |
| fail: |
| wacom_release_resources(wacom); |
| return error; |
| } |
| |
| static void wacom_wireless_work(struct work_struct *work) |
| { |
| struct wacom *wacom = container_of(work, struct wacom, wireless_work); |
| struct usb_device *usbdev = wacom->usbdev; |
| struct wacom_wac *wacom_wac = &wacom->wacom_wac; |
| struct hid_device *hdev1, *hdev2; |
| struct wacom *wacom1, *wacom2; |
| struct wacom_wac *wacom_wac1, *wacom_wac2; |
| int error; |
| |
| /* |
| * Regardless if this is a disconnect or a new tablet, |
| * remove any existing input and battery devices. |
| */ |
| |
| wacom_destroy_battery(wacom); |
| |
| if (!usbdev) |
| return; |
| |
| /* Stylus interface */ |
| hdev1 = usb_get_intfdata(usbdev->config->interface[1]); |
| wacom1 = hid_get_drvdata(hdev1); |
| wacom_wac1 = &(wacom1->wacom_wac); |
| wacom_release_resources(wacom1); |
| |
| /* Touch interface */ |
| hdev2 = usb_get_intfdata(usbdev->config->interface[2]); |
| wacom2 = hid_get_drvdata(hdev2); |
| wacom_wac2 = &(wacom2->wacom_wac); |
| wacom_release_resources(wacom2); |
| |
| if (wacom_wac->pid == 0) { |
| hid_info(wacom->hdev, "wireless tablet disconnected\n"); |
| } else { |
| const struct hid_device_id *id = wacom_ids; |
| |
| hid_info(wacom->hdev, "wireless tablet connected with PID %x\n", |
| wacom_wac->pid); |
| |
| while (id->bus) { |
| if (id->vendor == USB_VENDOR_ID_WACOM && |
| id->product == wacom_wac->pid) |
| break; |
| id++; |
| } |
| |
| if (!id->bus) { |
| hid_info(wacom->hdev, "ignoring unknown PID.\n"); |
| return; |
| } |
| |
| /* Stylus interface */ |
| wacom_wac1->features = |
| *((struct wacom_features *)id->driver_data); |
| |
| wacom_wac1->pid = wacom_wac->pid; |
| hid_hw_stop(hdev1); |
| error = wacom_parse_and_register(wacom1, true); |
| if (error) |
| goto fail; |
| |
| /* Touch interface */ |
| if (wacom_wac1->features.touch_max || |
| (wacom_wac1->features.type >= INTUOSHT && |
| wacom_wac1->features.type <= BAMBOO_PT)) { |
| wacom_wac2->features = |
| *((struct wacom_features *)id->driver_data); |
| wacom_wac2->pid = wacom_wac->pid; |
| hid_hw_stop(hdev2); |
| error = wacom_parse_and_register(wacom2, true); |
| if (error) |
| goto fail; |
| } |
| |
| strlcpy(wacom_wac->name, wacom_wac1->name, |
| sizeof(wacom_wac->name)); |
| error = wacom_initialize_battery(wacom); |
| if (error) |
| goto fail; |
| } |
| |
| return; |
| |
| fail: |
| wacom_release_resources(wacom1); |
| wacom_release_resources(wacom2); |
| return; |
| } |
| |
| static void wacom_remote_destroy_battery(struct wacom *wacom, int index) |
| { |
| struct wacom_remote *remote = wacom->remote; |
| |
| if (remote->remotes[index].battery.battery) { |
| devres_release_group(&wacom->hdev->dev, |
| &remote->remotes[index].battery.bat_desc); |
| remote->remotes[index].battery.battery = NULL; |
| remote->remotes[index].active_time = 0; |
| } |
| } |
| |
| static void wacom_remote_destroy_one(struct wacom *wacom, unsigned int index) |
| { |
| struct wacom_remote *remote = wacom->remote; |
| u32 serial = remote->remotes[index].serial; |
| int i; |
| unsigned long flags; |
| |
| for (i = 0; i < WACOM_MAX_REMOTES; i++) { |
| if (remote->remotes[i].serial == serial) { |
| |
| spin_lock_irqsave(&remote->remote_lock, flags); |
| remote->remotes[i].registered = false; |
| spin_unlock_irqrestore(&remote->remote_lock, flags); |
| |
| wacom_remote_destroy_battery(wacom, i); |
| |
| if (remote->remotes[i].group.name) |
| devres_release_group(&wacom->hdev->dev, |
| &remote->remotes[i]); |
| |
| remote->remotes[i].serial = 0; |
| remote->remotes[i].group.name = NULL; |
| wacom->led.groups[i].select = WACOM_STATUS_UNKNOWN; |
| } |
| } |
| } |
| |
| static int wacom_remote_create_one(struct wacom *wacom, u32 serial, |
| unsigned int index) |
| { |
| struct wacom_remote *remote = wacom->remote; |
| struct device *dev = &wacom->hdev->dev; |
| int error, k; |
| |
| /* A remote can pair more than once with an EKR, |
| * check to make sure this serial isn't already paired. |
| */ |
| for (k = 0; k < WACOM_MAX_REMOTES; k++) { |
| if (remote->remotes[k].serial == serial) |
| break; |
| } |
| |
| if (k < WACOM_MAX_REMOTES) { |
| remote->remotes[index].serial = serial; |
| return 0; |
| } |
| |
| if (!devres_open_group(dev, &remote->remotes[index], GFP_KERNEL)) |
| return -ENOMEM; |
| |
| error = wacom_remote_create_attr_group(wacom, serial, index); |
| if (error) |
| goto fail; |
| |
| remote->remotes[index].input = wacom_allocate_input(wacom); |
| if (!remote->remotes[index].input) { |
| error = -ENOMEM; |
| goto fail; |
| } |
| remote->remotes[index].input->uniq = remote->remotes[index].group.name; |
| remote->remotes[index].input->name = wacom->wacom_wac.pad_name; |
| |
| if (!remote->remotes[index].input->name) { |
| error = -EINVAL; |
| goto fail; |
| } |
| |
| error = wacom_setup_pad_input_capabilities(remote->remotes[index].input, |
| &wacom->wacom_wac); |
| if (error) |
| goto fail; |
| |
| remote->remotes[index].serial = serial; |
| |
| error = input_register_device(remote->remotes[index].input); |
| if (error) |
| goto fail; |
| |
| error = wacom_led_groups_alloc_and_register_one( |
| &remote->remotes[index].input->dev, |
| wacom, index, 3, true); |
| if (error) |
| goto fail; |
| |
| remote->remotes[index].registered = true; |
| |
| devres_close_group(dev, &remote->remotes[index]); |
| return 0; |
| |
| fail: |
| devres_release_group(dev, &remote->remotes[index]); |
| remote->remotes[index].serial = 0; |
| return error; |
| } |
| |
| static int wacom_remote_attach_battery(struct wacom *wacom, int index) |
| { |
| struct wacom_remote *remote = wacom->remote; |
| int error; |
| |
| if (!remote->remotes[index].registered) |
| return 0; |
| |
| if (remote->remotes[index].battery.battery) |
| return 0; |
| |
| if (!remote->remotes[index].active_time) |
| return 0; |
| |
| if (wacom->led.groups[index].select == WACOM_STATUS_UNKNOWN) |
| return 0; |
| |
| error = __wacom_initialize_battery(wacom, |
| &wacom->remote->remotes[index].battery); |
| if (error) |
| return error; |
| |
| return 0; |
| } |
| |
| static void wacom_remote_work(struct work_struct *work) |
| { |
| struct wacom *wacom = container_of(work, struct wacom, remote_work); |
| struct wacom_remote *remote = wacom->remote; |
| ktime_t kt = ktime_get(); |
| struct wacom_remote_data data; |
| unsigned long flags; |
| unsigned int count; |
| u32 serial; |
| int i; |
| |
| spin_lock_irqsave(&remote->remote_lock, flags); |
| |
| count = kfifo_out(&remote->remote_fifo, &data, sizeof(data)); |
| |
| if (count != sizeof(data)) { |
| hid_err(wacom->hdev, |
| "workitem triggered without status available\n"); |
| spin_unlock_irqrestore(&remote->remote_lock, flags); |
| return; |
| } |
| |
| if (!kfifo_is_empty(&remote->remote_fifo)) |
| wacom_schedule_work(&wacom->wacom_wac, WACOM_WORKER_REMOTE); |
| |
| spin_unlock_irqrestore(&remote->remote_lock, flags); |
| |
| for (i = 0; i < WACOM_MAX_REMOTES; i++) { |
| serial = data.remote[i].serial; |
| if (data.remote[i].connected) { |
| |
| if (kt - remote->remotes[i].active_time > WACOM_REMOTE_BATTERY_TIMEOUT |
| && remote->remotes[i].active_time != 0) |
| wacom_remote_destroy_battery(wacom, i); |
| |
| if (remote->remotes[i].serial == serial) { |
| wacom_remote_attach_battery(wacom, i); |
| continue; |
| } |
| |
| if (remote->remotes[i].serial) |
| wacom_remote_destroy_one(wacom, i); |
| |
| wacom_remote_create_one(wacom, serial, i); |
| |
| } else if (remote->remotes[i].serial) { |
| wacom_remote_destroy_one(wacom, i); |
| } |
| } |
| } |
| |
| static void wacom_mode_change_work(struct work_struct *work) |
| { |
| struct wacom *wacom = container_of(work, struct wacom, mode_change_work); |
| struct wacom_shared *shared = wacom->wacom_wac.shared; |
| struct wacom *wacom1 = NULL; |
| struct wacom *wacom2 = NULL; |
| bool is_direct = wacom->wacom_wac.is_direct_mode; |
| int error = 0; |
| |
| if (shared->pen) { |
| wacom1 = hid_get_drvdata(shared->pen); |
| wacom_release_resources(wacom1); |
| hid_hw_stop(wacom1->hdev); |
| wacom1->wacom_wac.has_mode_change = true; |
| wacom1->wacom_wac.is_direct_mode = is_direct; |
| } |
| |
| if (shared->touch) { |
| wacom2 = hid_get_drvdata(shared->touch); |
| wacom_release_resources(wacom2); |
| hid_hw_stop(wacom2->hdev); |
| wacom2->wacom_wac.has_mode_change = true; |
| wacom2->wacom_wac.is_direct_mode = is_direct; |
| } |
| |
| if (wacom1) { |
| error = wacom_parse_and_register(wacom1, false); |
| if (error) |
| return; |
| } |
| |
| if (wacom2) { |
| error = wacom_parse_and_register(wacom2, false); |
| if (error) |
| return; |
| } |
| |
| return; |
| } |
| |
| static int wacom_probe(struct hid_device *hdev, |
| const struct hid_device_id *id) |
| { |
| struct wacom *wacom; |
| struct wacom_wac *wacom_wac; |
| struct wacom_features *features; |
| int error; |
| |
| if (!id->driver_data) |
| return -EINVAL; |
| |
| hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; |
| |
| /* hid-core sets this quirk for the boot interface */ |
| hdev->quirks &= ~HID_QUIRK_NOGET; |
| |
| wacom = devm_kzalloc(&hdev->dev, sizeof(struct wacom), GFP_KERNEL); |
| if (!wacom) |
| return -ENOMEM; |
| |
| hid_set_drvdata(hdev, wacom); |
| wacom->hdev = hdev; |
| |
| wacom_wac = &wacom->wacom_wac; |
| wacom_wac->features = *((struct wacom_features *)id->driver_data); |
| features = &wacom_wac->features; |
| |
| if (features->check_for_hid_type && features->hid_type != hdev->type) { |
| error = -ENODEV; |
| goto fail; |
| } |
| |
| wacom_wac->hid_data.inputmode = -1; |
| wacom_wac->mode_report = -1; |
| |
| if (hid_is_usb(hdev)) { |
| struct usb_interface *intf = to_usb_interface(hdev->dev.parent); |
| struct usb_device *dev = interface_to_usbdev(intf); |
| |
| wacom->usbdev = dev; |
| wacom->intf = intf; |
| } |
| |
| mutex_init(&wacom->lock); |
| INIT_DELAYED_WORK(&wacom->init_work, wacom_init_work); |
| INIT_WORK(&wacom->wireless_work, wacom_wireless_work); |
| INIT_WORK(&wacom->battery_work, wacom_battery_work); |
| INIT_WORK(&wacom->remote_work, wacom_remote_work); |
| INIT_WORK(&wacom->mode_change_work, wacom_mode_change_work); |
| |
| /* ask for the report descriptor to be loaded by HID */ |
| error = hid_parse(hdev); |
| if (error) { |
| hid_err(hdev, "parse failed\n"); |
| goto fail; |
| } |
| |
| if (features->type == BOOTLOADER) { |
| hid_warn(hdev, "Using device in hidraw-only mode"); |
| return hid_hw_start(hdev, HID_CONNECT_HIDRAW); |
| } |
| |
| error = wacom_parse_and_register(wacom, false); |
| if (error) |
| goto fail; |
| |
| if (hdev->bus == BUS_BLUETOOTH) { |
| error = device_create_file(&hdev->dev, &dev_attr_speed); |
| if (error) |
| hid_warn(hdev, |
| "can't create sysfs speed attribute err: %d\n", |
| error); |
| } |
| |
| return 0; |
| |
| fail: |
| hid_set_drvdata(hdev, NULL); |
| return error; |
| } |
| |
| static void wacom_remove(struct hid_device *hdev) |
| { |
| struct wacom *wacom = hid_get_drvdata(hdev); |
| struct wacom_wac *wacom_wac = &wacom->wacom_wac; |
| struct wacom_features *features = &wacom_wac->features; |
| |
| if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR) |
| hid_hw_close(hdev); |
| |
| hid_hw_stop(hdev); |
| |
| cancel_delayed_work_sync(&wacom->init_work); |
| cancel_work_sync(&wacom->wireless_work); |
| cancel_work_sync(&wacom->battery_work); |
| cancel_work_sync(&wacom->remote_work); |
| cancel_work_sync(&wacom->mode_change_work); |
| if (hdev->bus == BUS_BLUETOOTH) |
| device_remove_file(&hdev->dev, &dev_attr_speed); |
| |
| /* make sure we don't trigger the LEDs */ |
| wacom_led_groups_release(wacom); |
| |
| if (wacom->wacom_wac.features.type != REMOTE) |
| wacom_release_resources(wacom); |
| |
| hid_set_drvdata(hdev, NULL); |
| } |
| |
| #ifdef CONFIG_PM |
| static int wacom_resume(struct hid_device *hdev) |
| { |
| struct wacom *wacom = hid_get_drvdata(hdev); |
| |
| mutex_lock(&wacom->lock); |
| |
| /* switch to wacom mode first */ |
| _wacom_query_tablet_data(wacom); |
| wacom_led_control(wacom); |
| |
| mutex_unlock(&wacom->lock); |
| |
| return 0; |
| } |
| |
| static int wacom_reset_resume(struct hid_device *hdev) |
| { |
| return wacom_resume(hdev); |
| } |
| #endif /* CONFIG_PM */ |
| |
| static struct hid_driver wacom_driver = { |
| .name = "wacom", |
| .id_table = wacom_ids, |
| .probe = wacom_probe, |
| .remove = wacom_remove, |
| .report = wacom_wac_report, |
| #ifdef CONFIG_PM |
| .resume = wacom_resume, |
| .reset_resume = wacom_reset_resume, |
| #endif |
| .raw_event = wacom_raw_event, |
| }; |
| module_hid_driver(wacom_driver); |
| |
| MODULE_VERSION(DRIVER_VERSION); |
| MODULE_AUTHOR(DRIVER_AUTHOR); |
| MODULE_DESCRIPTION(DRIVER_DESC); |
| MODULE_LICENSE("GPL"); |