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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* HID driver for EVision devices
* For now, only ignore bogus consumer reports
* sent after the keyboard has been configured
*
* Copyright (c) 2022 Philippe Valembois
*/
#include <linux/device.h>
#include <linux/input.h>
#include <linux/hid.h>
#include <linux/module.h>
#include "hid-ids.h"
static int evision_input_mapping(struct hid_device *hdev, struct hid_input *hi,
struct hid_field *field, struct hid_usage *usage,
unsigned long **bit, int *max)
{
if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)
return 0;
/* Ignore key down event */
if ((usage->hid & HID_USAGE) >> 8 == 0x05)
return -1;
/* Ignore key up event */
if ((usage->hid & HID_USAGE) >> 8 == 0x06)
return -1;
switch (usage->hid & HID_USAGE) {
/* Ignore configuration saved event */
case 0x0401: return -1;
/* Ignore reset event */
case 0x0402: return -1;
}
return 0;
}
static const struct hid_device_id evision_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_EVISION, USB_DEVICE_ID_EVISION_ICL01) },
{ }
};
MODULE_DEVICE_TABLE(hid, evision_devices);
static struct hid_driver evision_driver = {
.name = "evision",
.id_table = evision_devices,
.input_mapping = evision_input_mapping,
};
module_hid_driver(evision_driver);
MODULE_DESCRIPTION("HID driver for EVision devices");
MODULE_LICENSE("GPL");
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