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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * HID driver for some belkin "special" devices4 *5 * Copyright (c) 1999 Andreas Gal6 * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>7 * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc8 * Copyright (c) 2006-2007 Jiri Kosina9 * Copyright (c) 2008 Jiri Slaby10 */11 12/*13 */14 15#include <linux/device.h>16#include <linux/hid.h>17#include <linux/module.h>18 19#include "hid-ids.h"20 21#define BELKIN_HIDDEV 0x0122#define BELKIN_WKBD 0x0223 24#define belkin_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \25 EV_KEY, (c))26static int belkin_input_mapping(struct hid_device *hdev, struct hid_input *hi,27 struct hid_field *field, struct hid_usage *usage,28 unsigned long **bit, int *max)29{30 unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);31 32 if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER ||33 !(quirks & BELKIN_WKBD))34 return 0;35 36 switch (usage->hid & HID_USAGE) {37 case 0x03a: belkin_map_key_clear(KEY_SOUND); break;38 case 0x03b: belkin_map_key_clear(KEY_CAMERA); break;39 case 0x03c: belkin_map_key_clear(KEY_DOCUMENTS); break;40 default:41 return 0;42 }43 return 1;44}45 46static int belkin_probe(struct hid_device *hdev, const struct hid_device_id *id)47{48 unsigned long quirks = id->driver_data;49 int ret;50 51 hid_set_drvdata(hdev, (void *)quirks);52 53 ret = hid_parse(hdev);54 if (ret) {55 hid_err(hdev, "parse failed\n");56 goto err_free;57 }58 59 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT |60 ((quirks & BELKIN_HIDDEV) ? HID_CONNECT_HIDDEV_FORCE : 0));61 if (ret) {62 hid_err(hdev, "hw start failed\n");63 goto err_free;64 }65 66 return 0;67err_free:68 return ret;69}70 71static const struct hid_device_id belkin_devices[] = {72 { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM),73 .driver_data = BELKIN_HIDDEV },74 { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD),75 .driver_data = BELKIN_WKBD },76 { }77};78MODULE_DEVICE_TABLE(hid, belkin_devices);79 80static struct hid_driver belkin_driver = {81 .name = "belkin",82 .id_table = belkin_devices,83 .input_mapping = belkin_input_mapping,84 .probe = belkin_probe,85};86module_hid_driver(belkin_driver);87 88MODULE_DESCRIPTION("HID driver for some belkin \"special\" devices");89MODULE_LICENSE("GPL");90