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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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f1918be1c1
The ITE8595 keyboard uses the HID_GD_RFKILL_BTN usage code from the Wireless Radio Controls Application Collection Microsoft has defined for Windows 8 and later. However it has a quirk, when the rfkill hotkey is pressed it does generate a report for the collection, but the reported value is always 0. Luckily it is the only button in this collection / report, and it sends a report on release only, so receiving a report means the button was pressed. This commit adds a hid-ite driver which watches for the Wireless Radio Controls Application Collection report and then reports a KEY_RFKILL event, ignoring the value, making the rfkill on this keyboard work. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
/*
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* HID driver for some ITE "special" devices
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* Copyright (c) 2017 Hans de Goede <hdegoede@redhat.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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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 ite_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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struct input_dev *input;
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if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput)
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return 0;
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input = field->hidinput->input;
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/*
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* The ITE8595 always reports 0 as value for the rfkill button. Luckily
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* it is the only button in its report, and it sends a report on
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* release only, so receiving a report means the button was pressed.
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*/
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if (usage->hid == HID_GD_RFKILL_BTN) {
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input_event(input, EV_KEY, KEY_RFKILL, 1);
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input_sync(input);
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input_event(input, EV_KEY, KEY_RFKILL, 0);
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input_sync(input);
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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 ite_devices[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_ITE, USB_DEVICE_ID_ITE8595) },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, ite_devices);
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static struct hid_driver ite_driver = {
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.name = "itetech",
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.id_table = ite_devices,
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.event = ite_event,
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};
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module_hid_driver(ite_driver);
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MODULE_LICENSE("GPL");
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