54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* HID driver for EVision devices
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* For now, only ignore bogus consumer reports
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* sent after the keyboard has been configured
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*
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* Copyright (c) 2022 Philippe Valembois
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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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static int evision_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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/* Ignore key down event */
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if ((usage->hid & HID_USAGE) >> 8 == 0x05)
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return -1;
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/* Ignore key up event */
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if ((usage->hid & HID_USAGE) >> 8 == 0x06)
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return -1;
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switch (usage->hid & HID_USAGE) {
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/* Ignore configuration saved event */
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case 0x0401: return -1;
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/* Ignore reset event */
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case 0x0402: 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 evision_devices[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_EVISION, USB_DEVICE_ID_EVISION_ICL01) },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, evision_devices);
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static struct hid_driver evision_driver = {
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.name = "evision",
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.id_table = evision_devices,
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.input_mapping = evision_input_mapping,
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};
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module_hid_driver(evision_driver);
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MODULE_LICENSE("GPL");
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