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78 lines
2.0 KiB
78 lines
2.0 KiB
// 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 <[email protected]> |
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* Copyright (c) 2005 Michael Haboustak <[email protected]> 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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