// SPDX-License-Identifier: GPL-2.0-or-later /* * HID driver for some ezkey "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/input.h> #include <linux/hid.h> #include <linux/module.h> #include "hid-ids.h" #define ez_map_rel(c) hid_map_usage(hi, usage, bit, max, EV_REL, (c)) #define ez_map_key(c) hid_map_usage(hi, usage, bit, max, EV_KEY, (c)) static int ez_input_mapping(struct hid_device *hdev, struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max) { if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER) return 0; switch (usage->hid & HID_USAGE) { case 0x230: ez_map_key(BTN_MOUSE); break; case 0x231: ez_map_rel(REL_WHEEL); break; /* * this keyboard has a scrollwheel implemented in * totally broken way. We map this usage temporarily * to HWHEEL and handle it in the event quirk handler */ case 0x232: ez_map_rel(REL_HWHEEL); break; default: return 0; } return 1; } static int ez_event(struct hid_device *hdev, struct hid_field *field, struct hid_usage *usage, __s32 value) { if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput || !usage->type) return 0; /* handle the temporary quirky mapping to HWHEEL */ if (usage->type == EV_REL && usage->code == REL_HWHEEL) { struct input_dev *input = field->hidinput->input; input_event(input, usage->type, REL_WHEEL, -value); return 1; } return 0; } static const struct hid_device_id ez_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) }, { } }; MODULE_DEVICE_TABLE(hid, ez_devices); static struct hid_driver ez_driver = { .name = "ezkey", .id_table = ez_devices, .input_mapping = ez_input_mapping, .event = ez_event, }; module_hid_driver(ez_driver); MODULE_LICENSE("GPL");