Commit 1fe30b49 authored by Jiri Kosina's avatar Jiri Kosina
Browse files

Merge branch 'for-5.18/razer' into for-linus 

- driver for Razer Blackwidow keyboards (Jelle van der Waa)
parents 5d3ab413 047b6188

drivers/hid/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -931,6 +931,13 @@ config PLAYSTATION_FF 
	  Say Y here if you would like to enable force feedback support for

	  PlayStation game controllers.



config HID_RAZER

	tristate "Razer non-fully HID-compliant devices"

	depends on HID

	help

	Support for Razer devices that are not fully compliant with the

	HID standard.



config HID_PRIMAX

	tristate "Primax non-fully HID-compliant devices"

	depends on HID

drivers/hid/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -99,6 +99,7 @@ hid-picolcd-$(CONFIG_DEBUG_FS) += hid-picolcd_debugfs.o 
obj-$(CONFIG_HID_PLANTRONICS)	+= hid-plantronics.o

obj-$(CONFIG_HID_PLAYSTATION)	+= hid-playstation.o

obj-$(CONFIG_HID_PRIMAX)	+= hid-primax.o

obj-$(CONFIG_HID_RAZER)	+= hid-razer.o

obj-$(CONFIG_HID_REDRAGON)	+= hid-redragon.o

obj-$(CONFIG_HID_RETRODE)	+= hid-retrode.o

obj-$(CONFIG_HID_ROCCAT)	+= hid-roccat.o hid-roccat-common.o \

drivers/hid/hid-ids.h

+3 −0
Original line number Diff line number Diff line
@@ -1038,6 +1038,9 @@ 
#define I2C_PRODUCT_ID_RAYDIUM_3118	0x3118



#define USB_VENDOR_ID_RAZER            0x1532

#define USB_DEVICE_ID_RAZER_BLACKWIDOW_ULTIMATE   0x010D

#define USB_DEVICE_ID_RAZER_BLACKWIDOW            0x010e

#define USB_DEVICE_ID_RAZER_BLACKWIDOW_CLASSIC    0x011b

#define USB_DEVICE_ID_RAZER_BLADE_14   0x011D



#define USB_VENDOR_ID_REALTEK		0x0bda

drivers/hid/hid-razer.c

0 → 100644
+125 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0+

/*

 *  HID driver for gaming keys on Razer Blackwidow gaming keyboards

 *  Macro Key Keycodes: M1 = 191, M2 = 192, M3 = 193, M4 = 194, M5 = 195

 *

 *  Copyright (c) 2021 Jelle van der Waa <jvanderwaa@redhat.com>

 */



#include <linux/device.h>

#include <linux/hid.h>

#include <linux/module.h>

#include <linux/random.h>

#include <linux/sched.h>

#include <linux/usb.h>

#include <linux/wait.h>



#include "hid-ids.h"



#define map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c))



#define RAZER_BLACKWIDOW_TRANSFER_BUF_SIZE	91



static bool macro_key_remapping = 1;

module_param(macro_key_remapping, bool, 0644);

MODULE_PARM_DESC(macro_key_remapping, " on (Y) off (N)");





static unsigned char blackwidow_init[RAZER_BLACKWIDOW_TRANSFER_BUF_SIZE] = {

	0x00,

	0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x04,

	0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

	0x04, 0x00

};



static int razer_input_mapping(struct hid_device *hdev,

		struct hid_input *hi, struct hid_field *field,

		struct hid_usage *usage, unsigned long **bit, int *max)

{



	if (!macro_key_remapping)

		return 0;



	if ((usage->hid & HID_UP_KEYBOARD) != HID_UP_KEYBOARD)

		return 0;



	switch (usage->hid & ~HID_UP_KEYBOARD) {

	case 0x68:

		map_key_clear(KEY_MACRO1);

		return 1;

	case 0x69:

		map_key_clear(KEY_MACRO2);

		return 1;

	case 0x6a:

		map_key_clear(KEY_MACRO3);

		return 1;

	case 0x6b:

		map_key_clear(KEY_MACRO4);

		return 1;

	case 0x6c:

		map_key_clear(KEY_MACRO5);

		return 1;

	}



	return 0;

}



static int razer_probe(struct hid_device *hdev, const struct hid_device_id *id)

{

	char *buf;

	int ret = 0;



	ret = hid_parse(hdev);

	if (ret)

		return ret;



	/*

	 * Only send the enable macro keys command for the third device

	 * identified as mouse input.

	 */

	if (hdev->type == HID_TYPE_USBMOUSE) {

		buf = kmemdup(blackwidow_init, RAZER_BLACKWIDOW_TRANSFER_BUF_SIZE, GFP_KERNEL);

		if (buf == NULL)

			return -ENOMEM;



		ret = hid_hw_raw_request(hdev, 0, buf, RAZER_BLACKWIDOW_TRANSFER_BUF_SIZE,

				HID_FEATURE_REPORT, HID_REQ_SET_REPORT);

		if (ret != RAZER_BLACKWIDOW_TRANSFER_BUF_SIZE)

			hid_err(hdev, "failed to enable macro keys: %d\n", ret);



		kfree(buf);

	}



	return hid_hw_start(hdev, HID_CONNECT_DEFAULT);

}



static const struct hid_device_id razer_devices[] = {

	{ HID_USB_DEVICE(USB_VENDOR_ID_RAZER,

		USB_DEVICE_ID_RAZER_BLACKWIDOW) },

	{ HID_USB_DEVICE(USB_VENDOR_ID_RAZER,

		USB_DEVICE_ID_RAZER_BLACKWIDOW_CLASSIC) },

	{ HID_USB_DEVICE(USB_VENDOR_ID_RAZER,

		USB_DEVICE_ID_RAZER_BLACKWIDOW_ULTIMATE) },

	{ }

};

MODULE_DEVICE_TABLE(hid, razer_devices);



static struct hid_driver razer_driver = {

	.name = "razer",

	.id_table = razer_devices,

	.input_mapping = razer_input_mapping,

	.probe = razer_probe,

};

module_hid_driver(razer_driver);



MODULE_AUTHOR("Jelle van der Waa <jvanderwaa@redhat.com>");

MODULE_LICENSE("GPL");