79 lines
2.0 KiB
C
79 lines
2.0 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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