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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* HID driver for some belkin "special" devices
*
* Copyright (c) 1999 Andreas Gal
* Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
* Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
* Copyright (c) 2006-2007 Jiri Kosina
* Copyright (c) 2008 Jiri Slaby
*/
/*
*/
#include <linux/device.h>
#include <linux/hid.h>
#include <linux/module.h>
#include "hid-ids.h"
#define BELKIN_HIDDEV 0x01
#define BELKIN_WKBD 0x02
#define belkin_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \
EV_KEY, (c))
static int belkin_input_mapping(struct hid_device *hdev, struct hid_input *hi,
struct hid_field *field, struct hid_usage *usage,
unsigned long **bit, int *max)
{
unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER ||
!(quirks & BELKIN_WKBD))
return 0;
switch (usage->hid & HID_USAGE) {
case 0x03a: belkin_map_key_clear(KEY_SOUND); break;
case 0x03b: belkin_map_key_clear(KEY_CAMERA); break;
case 0x03c: belkin_map_key_clear(KEY_DOCUMENTS); break;
default:
return 0;
}
return 1;
}
static int belkin_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
unsigned long quirks = id->driver_data;
int ret;
hid_set_drvdata(hdev, (void *)quirks);
ret = hid_parse(hdev);
if (ret) {
hid_err(hdev, "parse failed\n");
goto err_free;
}
ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT |
((quirks & BELKIN_HIDDEV) ? HID_CONNECT_HIDDEV_FORCE : 0));
if (ret) {
hid_err(hdev, "hw start failed\n");
goto err_free;
}
return 0;
err_free:
return ret;
}
static const struct hid_device_id belkin_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM),
.driver_data = BELKIN_HIDDEV },
{ HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD),
.driver_data = BELKIN_WKBD },
{ }
};
MODULE_DEVICE_TABLE(hid, belkin_devices);
static struct hid_driver belkin_driver = {
.name = "belkin",
.id_table = belkin_devices,
.input_mapping = belkin_input_mapping,
.probe = belkin_probe,
};
module_hid_driver(belkin_driver);
MODULE_LICENSE("GPL");
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