HID: Add driver for Holtek based keyboards with broken HID (ff9bf5a2) · Commits · e / devices / android_kernel_oneplus_sm7250

drivers/hid/Kconfig

+4 −2

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		@@ -200,10 +200,12 @@ config HID_EZKEY
		Support for Ezkey BTC 8193 keyboard.

		config HID_HOLTEK
		tristate "Holtek On Line Grip based game controller support"
		tristate "Holtek HID devices"
		depends on USB_HID
		---help---
		Say Y here if you have a Holtek On Line Grip based game controller.
		Support for Holtek based devices:
		- Holtek On Line Grip based game controller
		- Trust GXT 18 Gaming Keyboard

		config HOLTEK_FF
		bool "Holtek On Line Grip force feedback support"

drivers/hid/Makefile

+1 −0

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		@@ -48,6 +48,7 @@ obj-$(CONFIG_HID_EMS_FF) += hid-emsff.o
		obj-$(CONFIG_HID_ELECOM) += hid-elecom.o
		obj-$(CONFIG_HID_EZKEY) += hid-ezkey.o
		obj-$(CONFIG_HID_GYRATION) += hid-gyration.o
		obj-$(CONFIG_HID_HOLTEK) += hid-holtek-kbd.o
		obj-$(CONFIG_HID_HOLTEK) += hid-holtekff.o
		obj-$(CONFIG_HID_HYPERV_MOUSE) += hid-hyperv.o
		obj-$(CONFIG_HID_KENSINGTON) += hid-kensington.o

drivers/hid/hid-core.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1536,6 +1536,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
		{ HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
		{ HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
		{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK, USB_DEVICE_ID_HOLTEK_ON_LINE_GRIP) },
		{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD) },
		{ HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
		{ HID_USB_DEVICE(USB_VENDOR_ID_KEYTOUCH, USB_DEVICE_ID_KEYTOUCH_IEC) },
		{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },

drivers/hid/hid-holtek-kbd.c

0 → 100644

+183 −0

Original line number	Diff line number	Diff line
		/*
		* HID driver for Holtek keyboard
		* Copyright (c) 2012 Tom Harwood
		*/

		/*
		* 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 <linux/usb.h>

		#include "hid-ids.h"
		#include "usbhid/usbhid.h"

		/* Holtek based keyboards (USB ID 04d9:a055) have the following issues:
		* - The report descriptor specifies an excessively large number of consumer
		* usages (2^15), which is more than HID_MAX_USAGES. This prevents proper
		* parsing of the report descriptor.
		* - The report descriptor reports on caps/scroll/num lock key presses, but
		* doesn't have an LED output usage block.
		*
		* The replacement descriptor below fixes the number of consumer usages,
		* and provides an LED output usage block. LED output events are redirected
		* to the boot interface.
		*/

		static __u8 holtek_kbd_rdesc_fixed[] = {
		/* Original report descriptor, with reduced number of consumer usages */
		0x05, 0x01, /* Usage Page (Desktop), */
		0x09, 0x80, /* Usage (Sys Control), */
		0xA1, 0x01, /* Collection (Application), */
		0x85, 0x01, /* Report ID (1), */
		0x19, 0x81, /* Usage Minimum (Sys Power Down), */
		0x29, 0x83, /* Usage Maximum (Sys Wake Up), */
		0x15, 0x00, /* Logical Minimum (0), */
		0x25, 0x01, /* Logical Maximum (1), */
		0x95, 0x03, /* Report Count (3), */
		0x75, 0x01, /* Report Size (1), */
		0x81, 0x02, /* Input (Variable), */
		0x95, 0x01, /* Report Count (1), */
		0x75, 0x05, /* Report Size (5), */
		0x81, 0x01, /* Input (Constant), */
		0xC0, /* End Collection, */
		0x05, 0x0C, /* Usage Page (Consumer), */
		0x09, 0x01, /* Usage (Consumer Control), */
		0xA1, 0x01, /* Collection (Application), */
		0x85, 0x02, /* Report ID (2), */
		0x19, 0x00, /* Usage Minimum (00h), */
		0x2A, 0xFF, 0x2F, /* Usage Maximum (0x2FFF), previously 0x7FFF */
		0x15, 0x00, /* Logical Minimum (0), */
		0x26, 0xFF, 0x2F, /* Logical Maximum (0x2FFF),previously 0x7FFF*/
		0x95, 0x01, /* Report Count (1), */
		0x75, 0x10, /* Report Size (16), */
		0x81, 0x00, /* Input, */
		0xC0, /* End Collection, */
		0x05, 0x01, /* Usage Page (Desktop), */
		0x09, 0x06, /* Usage (Keyboard), */
		0xA1, 0x01, /* Collection (Application), */
		0x85, 0x03, /* Report ID (3), */
		0x95, 0x38, /* Report Count (56), */
		0x75, 0x01, /* Report Size (1), */
		0x15, 0x00, /* Logical Minimum (0), */
		0x25, 0x01, /* Logical Maximum (1), */
		0x05, 0x07, /* Usage Page (Keyboard), */
		0x19, 0xE0, /* Usage Minimum (KB Leftcontrol), */
		0x29, 0xE7, /* Usage Maximum (KB Right GUI), */
		0x19, 0x00, /* Usage Minimum (None), */
		0x29, 0x2F, /* Usage Maximum (KB Lboxbracket And Lbrace),*/
		0x81, 0x02, /* Input (Variable), */
		0xC0, /* End Collection, */
		0x05, 0x01, /* Usage Page (Desktop), */
		0x09, 0x06, /* Usage (Keyboard), */
		0xA1, 0x01, /* Collection (Application), */
		0x85, 0x04, /* Report ID (4), */
		0x95, 0x38, /* Report Count (56), */
		0x75, 0x01, /* Report Size (1), */
		0x15, 0x00, /* Logical Minimum (0), */
		0x25, 0x01, /* Logical Maximum (1), */
		0x05, 0x07, /* Usage Page (Keyboard), */
		0x19, 0x30, /* Usage Minimum (KB Rboxbracket And Rbrace),*/
		0x29, 0x67, /* Usage Maximum (KP Equals), */
		0x81, 0x02, /* Input (Variable), */
		0xC0, /* End Collection */

		/* LED usage for the boot protocol interface */
		0x05, 0x01, /* Usage Page (Desktop), */
		0x09, 0x06, /* Usage (Keyboard), */
		0xA1, 0x01, /* Collection (Application), */
		0x05, 0x08, /* Usage Page (LED), */
		0x19, 0x01, /* Usage Minimum (01h), */
		0x29, 0x03, /* Usage Maximum (03h), */
		0x15, 0x00, /* Logical Minimum (0), */
		0x25, 0x01, /* Logical Maximum (1), */
		0x75, 0x01, /* Report Size (1), */
		0x95, 0x03, /* Report Count (3), */
		0x91, 0x02, /* Output (Variable), */
		0x95, 0x05, /* Report Count (5), */
		0x91, 0x01, /* Output (Constant), */
		0xC0, /* End Collection */
		};

		static __u8 holtek_kbd_report_fixup(struct hid_device hdev, __u8 *rdesc,
		unsigned int *rsize)
		{
		struct usb_interface *intf = to_usb_interface(hdev->dev.parent);

		if (intf->cur_altsetting->desc.bInterfaceNumber == 1) {
		rdesc = holtek_kbd_rdesc_fixed;
		*rsize = sizeof(holtek_kbd_rdesc_fixed);
		}
		return rdesc;
		}

		static int holtek_kbd_input_event(struct input_dev *dev, unsigned int type,
		unsigned int code,
		int value)
		{
		struct hid_device *hid = input_get_drvdata(dev);
		struct usb_device *usb_dev = hid_to_usb_dev(hid);

		/* Locate the boot interface, to receive the LED change events */
		struct usb_interface *boot_interface = usb_ifnum_to_if(usb_dev, 0);

		struct hid_device *boot_hid = usb_get_intfdata(boot_interface);
		struct hid_input *boot_hid_input = list_first_entry(&boot_hid->inputs,
		struct hid_input, list);

		return boot_hid_input->input->event(boot_hid_input->input, type, code,
		value);
		}

		static int holtek_kbd_probe(struct hid_device *hdev,
		const struct hid_device_id *id)
		{
		struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
		int ret = hid_parse(hdev);

		if (!ret)
		ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);

		if (!ret && intf->cur_altsetting->desc.bInterfaceNumber == 1) {
		struct hid_input *hidinput;
		list_for_each_entry(hidinput, &hdev->inputs, list) {
		hidinput->input->event = holtek_kbd_input_event;
		}
		}

		return ret;
		}

		static const struct hid_device_id holtek_kbd_devices[] = {
		{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
		USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD) },
		{ }
		};
		MODULE_DEVICE_TABLE(hid, holtek_kbd_devices);

		static struct hid_driver holtek_kbd_driver = {
		.name = "holtek_kbd",
		.id_table = holtek_kbd_devices,
		.report_fixup = holtek_kbd_report_fixup,
		.probe = holtek_kbd_probe
		};

		static int __init holtek_kbd_init(void)
		{
		return hid_register_driver(&holtek_kbd_driver);
		}

		static void __exit holtek_kbd_exit(void)
		{
		hid_unregister_driver(&holtek_kbd_driver);
		}

		module_exit(holtek_kbd_exit);
		module_init(holtek_kbd_init);
		MODULE_LICENSE("GPL");

drivers/hid/hid-ids.h

+3 −0

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		@@ -404,6 +404,9 @@
		#define USB_VENDOR_ID_HOLTEK 0x1241
		#define USB_DEVICE_ID_HOLTEK_ON_LINE_GRIP 0x5015

		#define USB_VENDOR_ID_HOLTEK_ALT 0x04d9
		#define USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD 0xa055

		#define USB_VENDOR_ID_IMATION 0x0718
		#define USB_DEVICE_ID_DISC_STAKKA 0xd000