// SPDX-License-Identifier: GPL-2.0-or-later /* * HID driver for some belkin "special" devices * * Copyright (c) 1999 Andreas Gal * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz> * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc * Copyright (c) 2006-2007 Jiri Kosina * Copyright (c) 2008 Jiri Slaby */ /* */ #include <linux/device.h> #include <linux/hid.h> #include <linux/module.h> #include "hid-ids.h" #define BELKIN_HIDDEV 0x01 #define BELKIN_WKBD 0x02 #define belkin_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \ EV_KEY, (c)) static int belkin_input_mapping(struct hid_device *hdev, struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max) { unsigned long quirks = (unsigned long)hid_get_drvdata(hdev); if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER || !(quirks & BELKIN_WKBD)) return 0; switch (usage->hid & HID_USAGE) { case 0x03a: belkin_map_key_clear(KEY_SOUND); break; case 0x03b: belkin_map_key_clear(KEY_CAMERA); break; case 0x03c: belkin_map_key_clear(KEY_DOCUMENTS); break; default: return 0; } return 1; } static int belkin_probe(struct hid_device *hdev, const struct hid_device_id *id) { unsigned long quirks = id->driver_data; int ret; hid_set_drvdata(hdev, (void *)quirks); ret = hid_parse(hdev); if (ret) { hid_err(hdev, "parse failed\n"); goto err_free; } ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT | ((quirks & BELKIN_HIDDEV) ? HID_CONNECT_HIDDEV_FORCE : 0)); if (ret) { hid_err(hdev, "hw start failed\n"); goto err_free; } return 0; err_free: return ret; } static const struct hid_device_id belkin_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM), .driver_data = BELKIN_HIDDEV }, { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD), .driver_data = BELKIN_WKBD }, { } }; MODULE_DEVICE_TABLE(hid, belkin_devices); static struct hid_driver belkin_driver = { .name = "belkin", .id_table = belkin_devices, .input_mapping = belkin_input_mapping, .probe = belkin_probe, }; module_hid_driver(belkin_driver); MODULE_LICENSE("GPL");