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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * HID driver for EVision devices4 * For now, only ignore bogus consumer reports5 * sent after the keyboard has been configured6 *7 * Copyright (c) 2022 Philippe Valembois8 */9 10#include <linux/device.h>11#include <linux/input.h>12#include <linux/hid.h>13#include <linux/module.h>14 15#include "hid-ids.h"16 17static int evision_input_mapping(struct hid_device *hdev, struct hid_input *hi,18 struct hid_field *field, struct hid_usage *usage,19 unsigned long **bit, int *max)20{21 if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)22 return 0;23 24 /* Ignore key down event */25 if ((usage->hid & HID_USAGE) >> 8 == 0x05)26 return -1;27 /* Ignore key up event */28 if ((usage->hid & HID_USAGE) >> 8 == 0x06)29 return -1;30 31 switch (usage->hid & HID_USAGE) {32 /* Ignore configuration saved event */33 case 0x0401: return -1;34 /* Ignore reset event */35 case 0x0402: return -1;36 }37 return 0;38}39 40static const struct hid_device_id evision_devices[] = {41 { HID_USB_DEVICE(USB_VENDOR_ID_EVISION, USB_DEVICE_ID_EVISION_ICL01) },42 { }43};44MODULE_DEVICE_TABLE(hid, evision_devices);45 46static struct hid_driver evision_driver = {47 .name = "evision",48 .id_table = evision_devices,49 .input_mapping = evision_input_mapping,50};51module_hid_driver(evision_driver);52 53MODULE_DESCRIPTION("HID driver for EVision devices");54MODULE_LICENSE("GPL");55