2874c5fd28
Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
79 lines
2 KiB
C
79 lines
2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* HID driver for some ezkey "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 <vojtech@suse.cz>
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* Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> 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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*/
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/*
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*/
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#include <linux/device.h>
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#include <linux/input.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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#define ez_map_rel(c) hid_map_usage(hi, usage, bit, max, EV_REL, (c))
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#define ez_map_key(c) hid_map_usage(hi, usage, bit, max, EV_KEY, (c))
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static int ez_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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if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)
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return 0;
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switch (usage->hid & HID_USAGE) {
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case 0x230: ez_map_key(BTN_MOUSE); break;
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case 0x231: ez_map_rel(REL_WHEEL); break;
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/*
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* this keyboard has a scrollwheel implemented in
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* totally broken way. We map this usage temporarily
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* to HWHEEL and handle it in the event quirk handler
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*/
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case 0x232: ez_map_rel(REL_HWHEEL); 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 int ez_event(struct hid_device *hdev, struct hid_field *field,
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struct hid_usage *usage, __s32 value)
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{
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if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput ||
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!usage->type)
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return 0;
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/* handle the temporary quirky mapping to HWHEEL */
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if (usage->type == EV_REL && usage->code == REL_HWHEEL) {
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struct input_dev *input = field->hidinput->input;
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input_event(input, usage->type, REL_WHEEL, -value);
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return 1;
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}
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return 0;
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}
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static const struct hid_device_id ez_devices[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, ez_devices);
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static struct hid_driver ez_driver = {
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.name = "ezkey",
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.id_table = ez_devices,
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.input_mapping = ez_input_mapping,
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.event = ez_event,
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};
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module_hid_driver(ez_driver);
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MODULE_LICENSE("GPL");
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