HID: redragon: Fix modifier keys for Redragon Asura Keyboard (85455dd9) · Commits · 戴 / test

drivers/hid/Kconfig

+7 −0

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	@@ -574,6 +574,13 @@ config HID_MAYFLASH
	Say Y here if you have HJZ Mayflash PS3 game controller adapters		Say Y here if you have HJZ Mayflash PS3 game controller adapters
	and want to enable force feedback support.		and want to enable force feedback support.

			config HID_REDRAGON
			tristate "Redragon keyboards"
			depends on HID
			default !EXPERT
			---help---
			Support for Redragon keyboards that need fix-ups to work properly.

	config HID_MICROSOFT		config HID_MICROSOFT
	tristate "Microsoft non-fully HID-compliant devices"		tristate "Microsoft non-fully HID-compliant devices"
	depends on HID		depends on HID

drivers/hid/Makefile

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -86,6 +86,7 @@ hid-picolcd-$(CONFIG_DEBUG_FS) += hid-picolcd_debugfs.o

	obj-$(CONFIG_HID_PLANTRONICS) += hid-plantronics.o		obj-$(CONFIG_HID_PLANTRONICS) += hid-plantronics.o
	obj-$(CONFIG_HID_PRIMAX) += hid-primax.o		obj-$(CONFIG_HID_PRIMAX) += hid-primax.o
			obj-$(CONFIG_HID_REDRAGON) += hid-redragon.o
	obj-$(CONFIG_HID_RETRODE) += hid-retrode.o		obj-$(CONFIG_HID_RETRODE) += hid-retrode.o
	obj-$(CONFIG_HID_ROCCAT) += hid-roccat.o hid-roccat-common.o \		obj-$(CONFIG_HID_ROCCAT) += hid-roccat.o hid-roccat-common.o \
	hid-roccat-arvo.o hid-roccat-isku.o hid-roccat-kone.o \		hid-roccat-arvo.o hid-roccat-isku.o hid-roccat-kone.o \

drivers/hid/hid-ids.h

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -605,6 +605,7 @@
	#define USB_VENDOR_ID_JESS 0x0c45		#define USB_VENDOR_ID_JESS 0x0c45
	#define USB_DEVICE_ID_JESS_YUREX 0x1010		#define USB_DEVICE_ID_JESS_YUREX 0x1010
	#define USB_DEVICE_ID_ASUS_MD_5112 0x5112		#define USB_DEVICE_ID_ASUS_MD_5112 0x5112
			#define USB_DEVICE_ID_REDRAGON_ASURA 0x760b

	#define USB_VENDOR_ID_JESS2 0x0f30		#define USB_VENDOR_ID_JESS2 0x0f30
	#define USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD 0x0111		#define USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD 0x0111

drivers/hid/hid-redragon.c

0 → 100644

+86 −0

Original line number	Original line	Diff line number	Diff line
			/*
			* HID driver for Redragon keyboards
			*
			* Copyright (c) 2017 Robert Munteanu
			* SPDX-License-Identifier: GPL-2.0+
			*/

			/*
			* This program is free software; you can redistribute it and/or modify it
			* under the terms of the GNU General Public License as published by the Free
			* Software Foundation; either version 2 of the License, or (at your option)
			* any later version.
			*/

			#include <linux/device.h>
			#include <linux/hid.h>
			#include <linux/module.h>

			#include "hid-ids.h"


			/*
			* The Redragon Asura keyboard sends an incorrect HID descriptor.
			* At byte 100 it contains
			*
			* 0x81, 0x00
			*
			* which is Input (Data, Arr, Abs), but it should be
			*
			* 0x81, 0x02
			*
			* which is Input (Data, Var, Abs), which is consistent with the way
			* key codes are generated.
			*/

			static __u8 redragon_report_fixup(struct hid_device hdev, __u8 *rdesc,
			unsigned int *rsize)
			{
			if (*rsize >= 102 && rdesc[100] == 0x81 && rdesc[101] == 0x00) {
			dev_info(&hdev->dev, "Fixing Redragon ASURA report descriptor.\n");
			rdesc[101] = 0x02;
			}

			return rdesc;
			}

			static int redragon_probe(struct hid_device *dev,
			const struct hid_device_id *id)
			{
			int ret;

			ret = hid_parse(dev);
			if (ret) {
			hid_err(dev, "parse failed\n");
			return ret;
			}

			/* do not register unused input device */
			if (dev->maxapplication == 1)
			return 0;

			ret = hid_hw_start(dev, HID_CONNECT_DEFAULT);
			if (ret) {
			hid_err(dev, "hw start failed\n");
			return ret;
			}

			return 0;
			}
			static const struct hid_device_id redragon_devices[] = {
			{HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_REDRAGON_ASURA)},
			{}
			};

			MODULE_DEVICE_TABLE(hid, redragon_devices);

			static struct hid_driver redragon_driver = {
			.name = "redragon",
			.id_table = redragon_devices,
			.report_fixup = redragon_report_fixup,
			.probe = redragon_probe
			};

			module_hid_driver(redragon_driver);

			MODULE_LICENSE("GPL");

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