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196 lines
5.7 KiB
196 lines
5.7 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* HID driver for some samsung "special" devices |
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* |
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* Copyright (c) 1999 Andreas Gal |
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* Copyright (c) 2000-2005 Vojtech Pavlik <[email protected]> |
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* Copyright (c) 2005 Michael Haboustak <[email protected]> for Concept2, Inc |
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* Copyright (c) 2006-2007 Jiri Kosina |
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* Copyright (c) 2008 Jiri Slaby |
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* Copyright (c) 2010 Don Prince <[email protected]> |
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* |
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* This driver supports several HID devices: |
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* |
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* [0419:0001] Samsung IrDA remote controller (reports as Cypress USB Mouse). |
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* various hid report fixups for different variants. |
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* |
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* [0419:0600] Creative Desktop Wireless 6000 keyboard/mouse combo |
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* several key mappings used from the consumer usage page |
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* deviate from the USB HUT 1.12 standard. |
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*/ |
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/* |
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*/ |
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#include <linux/device.h> |
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#include <linux/usb.h> |
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#include <linux/hid.h> |
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#include <linux/module.h> |
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#include "hid-ids.h" |
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/* |
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* There are several variants for 0419:0001: |
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* |
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* 1. 184 byte report descriptor |
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* Vendor specific report #4 has a size of 48 bit, |
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* and therefore is not accepted when inspecting the descriptors. |
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* As a workaround we reinterpret the report as: |
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* Variable type, count 6, size 8 bit, log. maximum 255 |
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* The burden to reconstruct the data is moved into user space. |
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* |
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* 2. 203 byte report descriptor |
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* Report #4 has an array field with logical range 0..18 instead of 1..15. |
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* |
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* 3. 135 byte report descriptor |
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* Report #4 has an array field with logical range 0..17 instead of 1..14. |
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* |
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* 4. 171 byte report descriptor |
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* Report #3 has an array field with logical range 0..1 instead of 1..3. |
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*/ |
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static inline void samsung_irda_dev_trace(struct hid_device *hdev, |
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unsigned int rsize) |
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{ |
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hid_info(hdev, "fixing up Samsung IrDA %d byte report descriptor\n", |
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rsize); |
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} |
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static __u8 *samsung_irda_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
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unsigned int *rsize) |
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{ |
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if (*rsize == 184 && rdesc[175] == 0x25 && rdesc[176] == 0x40 && |
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rdesc[177] == 0x75 && rdesc[178] == 0x30 && |
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rdesc[179] == 0x95 && rdesc[180] == 0x01 && |
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rdesc[182] == 0x40) { |
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samsung_irda_dev_trace(hdev, 184); |
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rdesc[176] = 0xff; |
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rdesc[178] = 0x08; |
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rdesc[180] = 0x06; |
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rdesc[182] = 0x42; |
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} else |
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if (*rsize == 203 && rdesc[192] == 0x15 && rdesc[193] == 0x0 && |
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rdesc[194] == 0x25 && rdesc[195] == 0x12) { |
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samsung_irda_dev_trace(hdev, 203); |
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rdesc[193] = 0x1; |
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rdesc[195] = 0xf; |
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} else |
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if (*rsize == 135 && rdesc[124] == 0x15 && rdesc[125] == 0x0 && |
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rdesc[126] == 0x25 && rdesc[127] == 0x11) { |
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samsung_irda_dev_trace(hdev, 135); |
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rdesc[125] = 0x1; |
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rdesc[127] = 0xe; |
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} else |
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if (*rsize == 171 && rdesc[160] == 0x15 && rdesc[161] == 0x0 && |
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rdesc[162] == 0x25 && rdesc[163] == 0x01) { |
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samsung_irda_dev_trace(hdev, 171); |
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rdesc[161] = 0x1; |
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rdesc[163] = 0x3; |
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} |
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return rdesc; |
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} |
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#define samsung_kbd_mouse_map_key_clear(c) \ |
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hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c)) |
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static int samsung_kbd_mouse_input_mapping(struct hid_device *hdev, |
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struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, |
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unsigned long **bit, int *max) |
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{ |
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struct usb_interface *intf = to_usb_interface(hdev->dev.parent); |
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unsigned short ifnum = intf->cur_altsetting->desc.bInterfaceNumber; |
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if (1 != ifnum || HID_UP_CONSUMER != (usage->hid & HID_USAGE_PAGE)) |
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return 0; |
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dbg_hid("samsung wireless keyboard/mouse input mapping event [0x%x]\n", |
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usage->hid & HID_USAGE); |
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switch (usage->hid & HID_USAGE) { |
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/* report 2 */ |
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case 0x183: samsung_kbd_mouse_map_key_clear(KEY_MEDIA); break; |
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case 0x195: samsung_kbd_mouse_map_key_clear(KEY_EMAIL); break; |
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case 0x196: samsung_kbd_mouse_map_key_clear(KEY_CALC); break; |
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case 0x197: samsung_kbd_mouse_map_key_clear(KEY_COMPUTER); break; |
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case 0x22b: samsung_kbd_mouse_map_key_clear(KEY_SEARCH); break; |
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case 0x22c: samsung_kbd_mouse_map_key_clear(KEY_WWW); break; |
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case 0x22d: samsung_kbd_mouse_map_key_clear(KEY_BACK); break; |
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case 0x22e: samsung_kbd_mouse_map_key_clear(KEY_FORWARD); break; |
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case 0x22f: samsung_kbd_mouse_map_key_clear(KEY_FAVORITES); break; |
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case 0x230: samsung_kbd_mouse_map_key_clear(KEY_REFRESH); break; |
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case 0x231: samsung_kbd_mouse_map_key_clear(KEY_STOP); break; |
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default: |
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return 0; |
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} |
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return 1; |
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} |
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static __u8 *samsung_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
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unsigned int *rsize) |
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{ |
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if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product) |
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rdesc = samsung_irda_report_fixup(hdev, rdesc, rsize); |
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return rdesc; |
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} |
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static int samsung_input_mapping(struct hid_device *hdev, struct hid_input *hi, |
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struct hid_field *field, struct hid_usage *usage, |
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unsigned long **bit, int *max) |
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{ |
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int ret = 0; |
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if (USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE == hdev->product) |
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ret = samsung_kbd_mouse_input_mapping(hdev, |
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hi, field, usage, bit, max); |
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return ret; |
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} |
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static int samsung_probe(struct hid_device *hdev, |
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const struct hid_device_id *id) |
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{ |
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int ret; |
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unsigned int cmask = HID_CONNECT_DEFAULT; |
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ret = hid_parse(hdev); |
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if (ret) { |
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hid_err(hdev, "parse failed\n"); |
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goto err_free; |
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} |
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if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product) { |
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if (hdev->rsize == 184) { |
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/* disable hidinput, force hiddev */ |
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cmask = (cmask & ~HID_CONNECT_HIDINPUT) | |
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HID_CONNECT_HIDDEV_FORCE; |
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} |
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} |
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ret = hid_hw_start(hdev, cmask); |
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if (ret) { |
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hid_err(hdev, "hw start failed\n"); |
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goto err_free; |
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} |
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return 0; |
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err_free: |
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return ret; |
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} |
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static const struct hid_device_id samsung_devices[] = { |
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{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) }, |
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{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(hid, samsung_devices); |
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static struct hid_driver samsung_driver = { |
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.name = "samsung", |
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.id_table = samsung_devices, |
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.report_fixup = samsung_report_fixup, |
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.input_mapping = samsung_input_mapping, |
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.probe = samsung_probe, |
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}; |
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module_hid_driver(samsung_driver); |
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MODULE_LICENSE("GPL");
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