drivers/hid/hid-samsung.c - LeafOS-Devices/android_kernel_samsung_exynos9820 - Gitiles

 /*
  *  HID driver for some samsung "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
  *  Copyright (c) 2010 Don Prince <dhprince.devel@yahoo.co.uk>
  *
  *
  *  This driver supports several HID devices:
  *
  *  [0419:0001] Samsung IrDA remote controller (reports as Cypress USB Mouse).
  *	various hid report fixups for different variants.
  *
  *  [0419:0600] Creative Desktop Wireless 6000 keyboard/mouse combo
  *	several key mappings used from the consumer usage page
  *	deviate from the USB HUT 1.12 standard.
  *
  */

 /*
  * 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/usb.h>
 #include <linux/hid.h>
 #include <linux/module.h>

 #include "hid-ids.h"

 /*
  * There are several variants for 0419:0001:
  *
  * 1. 184 byte report descriptor
  * Vendor specific report #4 has a size of 48 bit,
  * and therefore is not accepted when inspecting the descriptors.
  * As a workaround we reinterpret the report as:
  *   Variable type, count 6, size 8 bit, log. maximum 255
  * The burden to reconstruct the data is moved into user space.
  *
  * 2. 203 byte report descriptor
  * Report #4 has an array field with logical range 0..18 instead of 1..15.
  *
  * 3. 135 byte report descriptor
  * Report #4 has an array field with logical range 0..17 instead of 1..14.
  *
  * 4. 171 byte report descriptor
  * Report #3 has an array field with logical range 0..1 instead of 1..3.
  */
 static inline void samsung_irda_dev_trace(struct hid_device *hdev,
 		unsigned int rsize)
 {
 	hid_info(hdev, "fixing up Samsung IrDA %d byte report descriptor\n",
 		 rsize);
 }

 static __u8 *samsung_irda_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 		unsigned int *rsize)
 {
 	if (*rsize == 184 && rdesc[175] == 0x25 && rdesc[176] == 0x40 &&
 			rdesc[177] == 0x75 && rdesc[178] == 0x30 &&
 			rdesc[179] == 0x95 && rdesc[180] == 0x01 &&
 			rdesc[182] == 0x40) {
 		samsung_irda_dev_trace(hdev, 184);
 		rdesc[176] = 0xff;
 		rdesc[178] = 0x08;
 		rdesc[180] = 0x06;
 		rdesc[182] = 0x42;
 	} else
 	if (*rsize == 203 && rdesc[192] == 0x15 && rdesc[193] == 0x0 &&
 			rdesc[194] == 0x25 && rdesc[195] == 0x12) {
 		samsung_irda_dev_trace(hdev, 203);
 		rdesc[193] = 0x1;
 		rdesc[195] = 0xf;
 	} else
 	if (*rsize == 135 && rdesc[124] == 0x15 && rdesc[125] == 0x0 &&
 			rdesc[126] == 0x25 && rdesc[127] == 0x11) {
 		samsung_irda_dev_trace(hdev, 135);
 		rdesc[125] = 0x1;
 		rdesc[127] = 0xe;
 	} else
 	if (*rsize == 171 && rdesc[160] == 0x15 && rdesc[161] == 0x0 &&
 			rdesc[162] == 0x25 && rdesc[163] == 0x01) {
 		samsung_irda_dev_trace(hdev, 171);
 		rdesc[161] = 0x1;
 		rdesc[163] = 0x3;
 	}
 	return rdesc;
 }

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

 static int samsung_kbd_mouse_input_mapping(struct hid_device *hdev,
 	struct hid_input *hi, struct hid_field *field, struct hid_usage *usage,
 	unsigned long **bit, int *max)
 {
 	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 	unsigned short ifnum = intf->cur_altsetting->desc.bInterfaceNumber;

 	if (1 != ifnum || HID_UP_CONSUMER != (usage->hid & HID_USAGE_PAGE))
 		return 0;

 	dbg_hid("samsung wireless keyboard/mouse input mapping event [0x%x]\n",
 		usage->hid & HID_USAGE);

 	switch (usage->hid & HID_USAGE) {
 	/* report 2 */
 	case 0x183: samsung_kbd_mouse_map_key_clear(KEY_MEDIA); break;
 	case 0x195: samsung_kbd_mouse_map_key_clear(KEY_EMAIL);	break;
 	case 0x196: samsung_kbd_mouse_map_key_clear(KEY_CALC); break;
 	case 0x197: samsung_kbd_mouse_map_key_clear(KEY_COMPUTER); break;
 	case 0x22b: samsung_kbd_mouse_map_key_clear(KEY_SEARCH); break;
 	case 0x22c: samsung_kbd_mouse_map_key_clear(KEY_WWW); break;
 	case 0x22d: samsung_kbd_mouse_map_key_clear(KEY_BACK); break;
 	case 0x22e: samsung_kbd_mouse_map_key_clear(KEY_FORWARD); break;
 	case 0x22f: samsung_kbd_mouse_map_key_clear(KEY_FAVORITES); break;
 	case 0x230: samsung_kbd_mouse_map_key_clear(KEY_REFRESH); break;
 	case 0x231: samsung_kbd_mouse_map_key_clear(KEY_STOP); break;
 	default:
 		return 0;
 	}

 	return 1;
 }

 static int samsung_kbd_input_mapping(struct hid_device *hdev,
 	struct hid_input *hi, struct hid_field *field, struct hid_usage *usage,
 	unsigned long **bit, int *max)
 {
 	if (!(HID_UP_CONSUMER == (usage->hid & HID_USAGE_PAGE) ||
 			HID_UP_KEYBOARD == (usage->hid & HID_USAGE_PAGE)))
 		return 0;

 	dbg_hid("samsung wireless keyboard input mapping event [0x%x]\n",
 		usage->hid & HID_USAGE);

 	if (HID_UP_KEYBOARD == (usage->hid & HID_USAGE_PAGE)) {
 		switch (usage->hid & HID_USAGE) {
 		set_bit(EV_REP, hi->input->evbit);
 		/* Only for UK keyboard */
 		/* key found */
 #ifdef CONFIG_HID_KK_UPGRADE
 		case 0x32:
 			samsung_kbd_mouse_map_key_clear(KEY_KBDILLUMTOGGLE);
 			break;
 		case 0x64:
 			samsung_kbd_mouse_map_key_clear(KEY_BACKSLASH);
 			break;
 #else
 		case 0x32:
 			samsung_kbd_mouse_map_key_clear(KEY_BACKSLASH);
 			break;
 		case 0x64:
 			samsung_kbd_mouse_map_key_clear(KEY_102ND);
 			break;
 #endif
 		/* Only for BR keyboard */
 		case 0x87:
 			samsung_kbd_mouse_map_key_clear(KEY_RO);
 			break;
 		default:
 			return 0;
 		}
 	}

 	if (HID_UP_CONSUMER == (usage->hid & HID_USAGE_PAGE)) {
 		switch (usage->hid & HID_USAGE) {
 		/* report 2 */
 		/* MENU */
 		case 0x040:
 			samsung_kbd_mouse_map_key_clear(KEY_MENU);
 			break;
 		case 0x18a:
 			samsung_kbd_mouse_map_key_clear(KEY_MAIL);
 			break;
 		case 0x196:
 			samsung_kbd_mouse_map_key_clear(KEY_WWW);
 			break;
 		case 0x19e:
 			samsung_kbd_mouse_map_key_clear(KEY_SCREENLOCK);
 			break;
 		case 0x221:
 			samsung_kbd_mouse_map_key_clear(KEY_SEARCH);
 			break;
 		case 0x223:
 			samsung_kbd_mouse_map_key_clear(KEY_HOMEPAGE);
 			break;
 		/* RECENTAPPS */
 		case 0x301:
 			samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY1);
 			break;
 		/* APPLICATION */
 		case 0x302:
 			samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY2);
 			break;
 		/* Voice search */
 		case 0x305:
 			samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY4);
 			break;
 		/* QPANEL on/off */
 		case 0x306:
 			samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY5);
 			break;
 		/* SIP on/off */
 		case 0x307:
 			samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY3);
 			break;
 		/* LANG */
 		case 0x308:
 			samsung_kbd_mouse_map_key_clear(KEY_LANGUAGE);
 			break;
 		case 0x30a:
 			samsung_kbd_mouse_map_key_clear(KEY_BRIGHTNESSDOWN);
 			break;
 		case 0x30b:
 			samsung_kbd_mouse_map_key_clear(KEY_BRIGHTNESSUP);
 			break;
 		default:
 			return 0;
 		}
 	}

 	return 1;
 }

 static int samsung_gamepad_input_mapping(struct hid_device *hdev,
 	struct hid_input *hi, struct hid_field *field, struct hid_usage *usage,
 	unsigned long **bit, int *max)
 {
 	if (!(HID_UP_BUTTON == (usage->hid & HID_USAGE_PAGE) ||
 			HID_UP_CONSUMER == (usage->hid & HID_USAGE_PAGE)))
 		return 0;

 	dbg_hid("samsung wireless gamepad input mapping event [0x%x], %ld, %ld, [0x%x]\n",
 		usage->hid & HID_USAGE, hi->input->evbit[0], hi->input->absbit[0], usage->hid & HID_USAGE_PAGE);

 	if (HID_UP_BUTTON == (usage->hid & HID_USAGE_PAGE)) {
 		switch (usage->hid & HID_USAGE) {
 		case 0x01:
 			samsung_kbd_mouse_map_key_clear(BTN_A);
 			break;
 		case 0x02:
 			samsung_kbd_mouse_map_key_clear(BTN_B);
 			break;
 		case 0x03:
 			samsung_kbd_mouse_map_key_clear(BTN_C);
 			break;
 		case 0x04:
 			samsung_kbd_mouse_map_key_clear(BTN_X);
 			break;
 		case 0x05:
 			samsung_kbd_mouse_map_key_clear(BTN_Y);
 			break;
 		case 0x06:
 			samsung_kbd_mouse_map_key_clear(BTN_Z);
 			break;
 		case 0x07:
 			samsung_kbd_mouse_map_key_clear(BTN_TL);
 			break;
 		case 0x08:
 			samsung_kbd_mouse_map_key_clear(BTN_TR);
 			break;
 		case 0x09:
 			samsung_kbd_mouse_map_key_clear(BTN_TL2);
 			break;
 		case 0x0a:
 			samsung_kbd_mouse_map_key_clear(BTN_TR2);
 			break;
 		case 0x0b:
 			samsung_kbd_mouse_map_key_clear(BTN_SELECT);
 			break;
 		case 0x0c:
 			samsung_kbd_mouse_map_key_clear(BTN_START);
 			break;
 		case 0x0d:
 			samsung_kbd_mouse_map_key_clear(BTN_MODE);
 			break;
 		case 0x0e:
 			samsung_kbd_mouse_map_key_clear(BTN_THUMBL);
 			break;
 		case 0x0f:
 			samsung_kbd_mouse_map_key_clear(BTN_THUMBR);
 			break;
 		case 0x10:
 			samsung_kbd_mouse_map_key_clear(BTN_GAME);
 			break;
 		default:
 			return 0;
 		}
 	}

 	if (HID_UP_CONSUMER == (usage->hid & HID_USAGE_PAGE)) {
 		switch (usage->hid & HID_USAGE) {
 		case 0x040:
 			samsung_kbd_mouse_map_key_clear(KEY_MENU);
 			break;
 		case 0x223:
 			samsung_kbd_mouse_map_key_clear(KEY_HOMEPAGE);
 			break;
 		case 0x224:
 			samsung_kbd_mouse_map_key_clear(KEY_BACK);
 			break;

 		/* Screen Capture */
 		case 0x303:
 			samsung_kbd_mouse_map_key_clear(KEY_SYSRQ);
 			break;

 		default:
 			return 0;
 		}
 	}

 	return 1;
 }

 static int samsung_actionmouse_input_mapping(struct hid_device *hdev,
 	struct hid_input *hi, struct hid_field *field, struct hid_usage *usage,
 	unsigned long **bit, int *max)
 {

 	dbg_hid("samsung wireless actionmouse input mapping event [0x%x], [0x%x], %ld, %ld, [0x%x]\n",
 			usage->hid, usage->hid & HID_USAGE, hi->input->evbit[0], hi->input->absbit[0],
 			usage->hid & HID_USAGE_PAGE);

 	if (((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER) && ((usage->hid & HID_USAGE_PAGE) != HID_UP_BUTTON))
 		return 0;

 	switch (usage->hid & HID_USAGE) {
 	case 0x301:
 		samsung_kbd_mouse_map_key_clear(KEY_RECENT);
 		break;
 	default:
 		return 0;
 	}

 	return 1;
 }

 static int samsung_universal_kbd_input_mapping(struct hid_device *hdev,
 	struct hid_input *hi, struct hid_field *field, struct hid_usage *usage,
 	unsigned long **bit, int *max)
 {
 	if (!(HID_UP_CONSUMER == (usage->hid & HID_USAGE_PAGE) ||
 			HID_UP_KEYBOARD == (usage->hid & HID_USAGE_PAGE)))
 		return 0;

 	dbg_hid("samsung wireless keyboard input mapping event [0x%x]\n",
 		usage->hid & HID_USAGE);

 	if (HID_UP_KEYBOARD == (usage->hid & HID_USAGE_PAGE)) {
 		switch (usage->hid & HID_USAGE) {
 		set_bit(EV_REP, hi->input->evbit);
 		/* Only for UK keyboard */
 		/* key found */
 #ifdef CONFIG_HID_KK_UPGRADE
 		case 0x32:
 			samsung_kbd_mouse_map_key_clear(KEY_KBDILLUMTOGGLE);
 			break;
 		case 0x64:
 			samsung_kbd_mouse_map_key_clear(KEY_BACKSLASH);
 			break;
 #else
 		case 0x32:
 			samsung_kbd_mouse_map_key_clear(KEY_BACKSLASH);
 			break;
 		case 0x64:
 			samsung_kbd_mouse_map_key_clear(KEY_102ND);
 			break;
 #endif
 		/* Only for BR keyboard */
 		case 0x87:
 			samsung_kbd_mouse_map_key_clear(KEY_RO);
 			break;
 		default:
 			return 0;
 		}
 	}

 	if (HID_UP_CONSUMER == (usage->hid & HID_USAGE_PAGE)) {
 		switch (usage->hid & HID_USAGE) {
 		/* report 2 */
 		/* MENU */
 		case 0x040:
 			samsung_kbd_mouse_map_key_clear(KEY_MENU);
 			break;
 		case 0x18a:
 			samsung_kbd_mouse_map_key_clear(KEY_MAIL);
 			break;
 		case 0x196:
 			samsung_kbd_mouse_map_key_clear(KEY_WWW);
 			break;
 		case 0x19e:
 			samsung_kbd_mouse_map_key_clear(KEY_SCREENLOCK);
 			break;
 		case 0x221:
 			samsung_kbd_mouse_map_key_clear(KEY_SEARCH);
 			break;
 		case 0x223:
 			samsung_kbd_mouse_map_key_clear(KEY_HOMEPAGE);
 			break;
 		/* RECENTAPPS */
 		case 0x301:
 			samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY1);
 			break;
 		/* APPLICATION */
 		case 0x302:
 			samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY2);
 			break;
 		/* Voice search */
 		case 0x305:
 			samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY4);
 			break;
 		/* QPANEL on/off */
 		case 0x306:
 			samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY5);
 			break;
 		/* SIP on/off */
 		case 0x307:
 			samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY3);
 			break;
 		/* LANG */
 		case 0x308:
 			samsung_kbd_mouse_map_key_clear(KEY_LANGUAGE);
 			break;
 		case 0x30a:
 			samsung_kbd_mouse_map_key_clear(KEY_BRIGHTNESSDOWN);
 			break;
 		case 0x070:
 			samsung_kbd_mouse_map_key_clear(KEY_BRIGHTNESSDOWN);
 			break;
 		case 0x30b:
 			samsung_kbd_mouse_map_key_clear(KEY_BRIGHTNESSUP);
 			break;
 		case 0x06f:
 			samsung_kbd_mouse_map_key_clear(KEY_BRIGHTNESSUP);
 			break;
 		/* S-Finder */
 		case 0x304:
 			samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY7);
 			break;
 		/* Screen Capture */
 		case 0x303:
 			samsung_kbd_mouse_map_key_clear(KEY_SYSRQ);
 			break;
 		/* Multi Window */
 		case 0x309:
 			samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY9);
 			break;
 		/* HotKey App 1 */
 		case 0x071:
 			samsung_kbd_mouse_map_key_clear(BTN_HOTKEY_APP1);
 			break;
 		/* HotKey App 2 */
 		case 0x072:
 			samsung_kbd_mouse_map_key_clear(BTN_HOTKEY_APP2);
 			break;
 		/* HotKey App 3 */
 		case 0x073:
 			samsung_kbd_mouse_map_key_clear(BTN_HOTKEY_APP3);
 			break;
 		/* Dex */
 		case 0x06e:
 			samsung_kbd_mouse_map_key_clear(KEY_DEX_ON);
 			break;
 		default:
 			return 0;
 		}
 	}

 	return 1;
 }

 static __u8 *samsung_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 	unsigned int *rsize)
 {
 	if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product)
 		rdesc = samsung_irda_report_fixup(hdev, rdesc, rsize);
 	return rdesc;
 }

 static int samsung_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 	struct hid_field *field, struct hid_usage *usage,
 	unsigned long **bit, int *max)
 {
 	int ret = 0;

 	if (USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE == hdev->product)
 		ret = samsung_kbd_mouse_input_mapping(hdev,
 			hi, field, usage, bit, max);
 	else if (hdev->product == USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD)
 		ret = samsung_kbd_input_mapping(hdev,
 			hi, field, usage, bit, max);
 	else if (hdev->product == USB_DEVICE_ID_SAMSUNG_WIRELESS_GAMEPAD)
 		ret = samsung_gamepad_input_mapping(hdev,
 			hi, field, usage, bit, max);
 	else if (hdev->product == USB_DEVICE_ID_SAMSUNG_WIRELESS_ACTIONMOUSE)
 		ret = samsung_actionmouse_input_mapping(hdev,
 			hi, field, usage, bit, max);
 	else if (hdev->product == USB_DEVICE_ID_SAMSUNG_WIRELESS_UNIVERSAL_KBD)
 		ret = samsung_universal_kbd_input_mapping(hdev,
 			hi, field, usage, bit, max);
 	else if (hdev->product == USB_DEVICE_ID_SAMSUNG_WIRELESS_MULTI_HOGP_KBD)
 		ret = samsung_universal_kbd_input_mapping(hdev,
 			hi, field, usage, bit, max);

 	return ret;
 }

 static int samsung_probe(struct hid_device *hdev,
 		const struct hid_device_id *id)
 {
 	int ret;
 	unsigned int cmask = HID_CONNECT_DEFAULT;

 	if (!(hid_is_usb(hdev) || hdev->bus == BUS_BLUETOOTH))
 		return -EINVAL;

 	ret = hid_parse(hdev);
 	if (ret) {
 		hid_err(hdev, "parse failed\n");
 		goto err_free;
 	}

 	if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product) {
 		if (hdev->rsize == 184) {
 			/* disable hidinput, force hiddev */
 			cmask = (cmask & ~HID_CONNECT_HIDINPUT) |
 				HID_CONNECT_HIDDEV_FORCE;
 		}
 	}

 	ret = hid_hw_start(hdev, cmask);
 	if (ret) {
 		hid_err(hdev, "hw start failed\n");
 		goto err_free;
 	}

 	return 0;
 err_free:
 	return ret;
 }

 static const struct hid_device_id samsung_devices[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SAMSUNG_ELECTRONICS, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD) },
 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SAMSUNG_ELECTRONICS, USB_DEVICE_ID_SAMSUNG_WIRELESS_GAMEPAD) },
 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SAMSUNG_ELECTRONICS, USB_DEVICE_ID_SAMSUNG_WIRELESS_ACTIONMOUSE) },
 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SAMSUNG_ELECTRONICS, USB_DEVICE_ID_SAMSUNG_WIRELESS_UNIVERSAL_KBD) },
 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SAMSUNG_ELECTRONICS, USB_DEVICE_ID_SAMSUNG_WIRELESS_MULTI_HOGP_KBD) },
 	{ }
 };
 MODULE_DEVICE_TABLE(hid, samsung_devices);

 static struct hid_driver samsung_driver = {
 	.name = "samsung",
 	.id_table = samsung_devices,
 	.report_fixup = samsung_report_fixup,
 	.input_mapping = samsung_input_mapping,
 	.probe = samsung_probe,
 };
 module_hid_driver(samsung_driver);

 MODULE_LICENSE("GPL");
	/*
	* HID driver for some samsung "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
	* Copyright (c) 2010 Don Prince <dhprince.devel@yahoo.co.uk>
	*
	*
	* This driver supports several HID devices:
	*
	* [0419:0001] Samsung IrDA remote controller (reports as Cypress USB Mouse).
	* various hid report fixups for different variants.
	*
	* [0419:0600] Creative Desktop Wireless 6000 keyboard/mouse combo
	* several key mappings used from the consumer usage page
	* deviate from the USB HUT 1.12 standard.
	*
	*/

	/*
	* 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/usb.h>
	#include <linux/hid.h>
	#include <linux/module.h>

	#include "hid-ids.h"

	/*
	* There are several variants for 0419:0001:
	*
	* 1. 184 byte report descriptor
	* Vendor specific report #4 has a size of 48 bit,
	* and therefore is not accepted when inspecting the descriptors.
	* As a workaround we reinterpret the report as:
	* Variable type, count 6, size 8 bit, log. maximum 255
	* The burden to reconstruct the data is moved into user space.
	*
	* 2. 203 byte report descriptor
	* Report #4 has an array field with logical range 0..18 instead of 1..15.
	*
	* 3. 135 byte report descriptor
	* Report #4 has an array field with logical range 0..17 instead of 1..14.
	*
	* 4. 171 byte report descriptor
	* Report #3 has an array field with logical range 0..1 instead of 1..3.
	*/
	static inline void samsung_irda_dev_trace(struct hid_device *hdev,
	unsigned int rsize)
	{
	hid_info(hdev, "fixing up Samsung IrDA %d byte report descriptor\n",
	rsize);
	}

	static __u8 samsung_irda_report_fixup(struct hid_device hdev, __u8 *rdesc,
	unsigned int *rsize)
	{
	if (*rsize == 184 && rdesc[175] == 0x25 && rdesc[176] == 0x40 &&
	rdesc[177] == 0x75 && rdesc[178] == 0x30 &&
	rdesc[179] == 0x95 && rdesc[180] == 0x01 &&
	rdesc[182] == 0x40) {
	samsung_irda_dev_trace(hdev, 184);
	rdesc[176] = 0xff;
	rdesc[178] = 0x08;
	rdesc[180] = 0x06;
	rdesc[182] = 0x42;
	} else
	if (*rsize == 203 && rdesc[192] == 0x15 && rdesc[193] == 0x0 &&
	rdesc[194] == 0x25 && rdesc[195] == 0x12) {
	samsung_irda_dev_trace(hdev, 203);
	rdesc[193] = 0x1;
	rdesc[195] = 0xf;
	} else
	if (*rsize == 135 && rdesc[124] == 0x15 && rdesc[125] == 0x0 &&
	rdesc[126] == 0x25 && rdesc[127] == 0x11) {
	samsung_irda_dev_trace(hdev, 135);
	rdesc[125] = 0x1;
	rdesc[127] = 0xe;
	} else
	if (*rsize == 171 && rdesc[160] == 0x15 && rdesc[161] == 0x0 &&
	rdesc[162] == 0x25 && rdesc[163] == 0x01) {
	samsung_irda_dev_trace(hdev, 171);
	rdesc[161] = 0x1;
	rdesc[163] = 0x3;
	}
	return rdesc;
	}

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

	static int samsung_kbd_mouse_input_mapping(struct hid_device *hdev,
	struct hid_input hi, struct hid_field field, struct hid_usage *usage,
	unsigned long *bit, int max)
	{
	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
	unsigned short ifnum = intf->cur_altsetting->desc.bInterfaceNumber;

	if (1 != ifnum \|\| HID_UP_CONSUMER != (usage->hid & HID_USAGE_PAGE))
	return 0;

	dbg_hid("samsung wireless keyboard/mouse input mapping event [0x%x]\n",
	usage->hid & HID_USAGE);

	switch (usage->hid & HID_USAGE) {
	/* report 2 */
	case 0x183: samsung_kbd_mouse_map_key_clear(KEY_MEDIA); break;
	case 0x195: samsung_kbd_mouse_map_key_clear(KEY_EMAIL); break;
	case 0x196: samsung_kbd_mouse_map_key_clear(KEY_CALC); break;
	case 0x197: samsung_kbd_mouse_map_key_clear(KEY_COMPUTER); break;
	case 0x22b: samsung_kbd_mouse_map_key_clear(KEY_SEARCH); break;
	case 0x22c: samsung_kbd_mouse_map_key_clear(KEY_WWW); break;
	case 0x22d: samsung_kbd_mouse_map_key_clear(KEY_BACK); break;
	case 0x22e: samsung_kbd_mouse_map_key_clear(KEY_FORWARD); break;
	case 0x22f: samsung_kbd_mouse_map_key_clear(KEY_FAVORITES); break;
	case 0x230: samsung_kbd_mouse_map_key_clear(KEY_REFRESH); break;
	case 0x231: samsung_kbd_mouse_map_key_clear(KEY_STOP); break;
	default:
	return 0;
	}

	return 1;
	}

	static int samsung_kbd_input_mapping(struct hid_device *hdev,
	struct hid_input hi, struct hid_field field, struct hid_usage *usage,
	unsigned long *bit, int max)
	{
	if (!(HID_UP_CONSUMER == (usage->hid & HID_USAGE_PAGE) \|\|
	HID_UP_KEYBOARD == (usage->hid & HID_USAGE_PAGE)))
	return 0;

	dbg_hid("samsung wireless keyboard input mapping event [0x%x]\n",
	usage->hid & HID_USAGE);

	if (HID_UP_KEYBOARD == (usage->hid & HID_USAGE_PAGE)) {
	switch (usage->hid & HID_USAGE) {
	set_bit(EV_REP, hi->input->evbit);
	/* Only for UK keyboard */
	/* key found */
	#ifdef CONFIG_HID_KK_UPGRADE
	case 0x32:
	samsung_kbd_mouse_map_key_clear(KEY_KBDILLUMTOGGLE);
	break;
	case 0x64:
	samsung_kbd_mouse_map_key_clear(KEY_BACKSLASH);
	break;
	#else
	case 0x32:
	samsung_kbd_mouse_map_key_clear(KEY_BACKSLASH);
	break;
	case 0x64:
	samsung_kbd_mouse_map_key_clear(KEY_102ND);
	break;
	#endif
	/* Only for BR keyboard */
	case 0x87:
	samsung_kbd_mouse_map_key_clear(KEY_RO);
	break;
	default:
	return 0;
	}
	}

	if (HID_UP_CONSUMER == (usage->hid & HID_USAGE_PAGE)) {
	switch (usage->hid & HID_USAGE) {
	/* report 2 */
	/* MENU */
	case 0x040:
	samsung_kbd_mouse_map_key_clear(KEY_MENU);
	break;
	case 0x18a:
	samsung_kbd_mouse_map_key_clear(KEY_MAIL);
	break;
	case 0x196:
	samsung_kbd_mouse_map_key_clear(KEY_WWW);
	break;
	case 0x19e:
	samsung_kbd_mouse_map_key_clear(KEY_SCREENLOCK);
	break;
	case 0x221:
	samsung_kbd_mouse_map_key_clear(KEY_SEARCH);
	break;
	case 0x223:
	samsung_kbd_mouse_map_key_clear(KEY_HOMEPAGE);
	break;
	/* RECENTAPPS */
	case 0x301:
	samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY1);
	break;
	/* APPLICATION */
	case 0x302:
	samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY2);
	break;
	/* Voice search */
	case 0x305:
	samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY4);
	break;
	/* QPANEL on/off */
	case 0x306:
	samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY5);
	break;
	/* SIP on/off */
	case 0x307:
	samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY3);
	break;
	/* LANG */
	case 0x308:
	samsung_kbd_mouse_map_key_clear(KEY_LANGUAGE);
	break;
	case 0x30a:
	samsung_kbd_mouse_map_key_clear(KEY_BRIGHTNESSDOWN);
	break;
	case 0x30b:
	samsung_kbd_mouse_map_key_clear(KEY_BRIGHTNESSUP);
	break;
	default:
	return 0;
	}
	}

	return 1;
	}

	static int samsung_gamepad_input_mapping(struct hid_device *hdev,
	struct hid_input hi, struct hid_field field, struct hid_usage *usage,
	unsigned long *bit, int max)
	{
	if (!(HID_UP_BUTTON == (usage->hid & HID_USAGE_PAGE) \|\|
	HID_UP_CONSUMER == (usage->hid & HID_USAGE_PAGE)))
	return 0;

	dbg_hid("samsung wireless gamepad input mapping event [0x%x], %ld, %ld, [0x%x]\n",
	usage->hid & HID_USAGE, hi->input->evbit[0], hi->input->absbit[0], usage->hid & HID_USAGE_PAGE);

	if (HID_UP_BUTTON == (usage->hid & HID_USAGE_PAGE)) {
	switch (usage->hid & HID_USAGE) {
	case 0x01:
	samsung_kbd_mouse_map_key_clear(BTN_A);
	break;
	case 0x02:
	samsung_kbd_mouse_map_key_clear(BTN_B);
	break;
	case 0x03:
	samsung_kbd_mouse_map_key_clear(BTN_C);
	break;
	case 0x04:
	samsung_kbd_mouse_map_key_clear(BTN_X);
	break;
	case 0x05:
	samsung_kbd_mouse_map_key_clear(BTN_Y);
	break;
	case 0x06:
	samsung_kbd_mouse_map_key_clear(BTN_Z);
	break;
	case 0x07:
	samsung_kbd_mouse_map_key_clear(BTN_TL);
	break;
	case 0x08:
	samsung_kbd_mouse_map_key_clear(BTN_TR);
	break;
	case 0x09:
	samsung_kbd_mouse_map_key_clear(BTN_TL2);
	break;
	case 0x0a:
	samsung_kbd_mouse_map_key_clear(BTN_TR2);
	break;
	case 0x0b:
	samsung_kbd_mouse_map_key_clear(BTN_SELECT);
	break;
	case 0x0c:
	samsung_kbd_mouse_map_key_clear(BTN_START);
	break;
	case 0x0d:
	samsung_kbd_mouse_map_key_clear(BTN_MODE);
	break;
	case 0x0e:
	samsung_kbd_mouse_map_key_clear(BTN_THUMBL);
	break;
	case 0x0f:
	samsung_kbd_mouse_map_key_clear(BTN_THUMBR);
	break;
	case 0x10:
	samsung_kbd_mouse_map_key_clear(BTN_GAME);
	break;
	default:
	return 0;
	}
	}

	if (HID_UP_CONSUMER == (usage->hid & HID_USAGE_PAGE)) {
	switch (usage->hid & HID_USAGE) {
	case 0x040:
	samsung_kbd_mouse_map_key_clear(KEY_MENU);
	break;
	case 0x223:
	samsung_kbd_mouse_map_key_clear(KEY_HOMEPAGE);
	break;
	case 0x224:
	samsung_kbd_mouse_map_key_clear(KEY_BACK);
	break;

	/* Screen Capture */
	case 0x303:
	samsung_kbd_mouse_map_key_clear(KEY_SYSRQ);
	break;

	default:
	return 0;
	}
	}

	return 1;
	}

	static int samsung_actionmouse_input_mapping(struct hid_device *hdev,
	struct hid_input hi, struct hid_field field, struct hid_usage *usage,
	unsigned long *bit, int max)
	{

	dbg_hid("samsung wireless actionmouse input mapping event [0x%x], [0x%x], %ld, %ld, [0x%x]\n",
	usage->hid, usage->hid & HID_USAGE, hi->input->evbit[0], hi->input->absbit[0],
	usage->hid & HID_USAGE_PAGE);

	if (((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER) && ((usage->hid & HID_USAGE_PAGE) != HID_UP_BUTTON))
	return 0;

	switch (usage->hid & HID_USAGE) {
	case 0x301:
	samsung_kbd_mouse_map_key_clear(KEY_RECENT);
	break;
	default:
	return 0;
	}

	return 1;
	}

	static int samsung_universal_kbd_input_mapping(struct hid_device *hdev,
	struct hid_input hi, struct hid_field field, struct hid_usage *usage,
	unsigned long *bit, int max)
	{
	if (!(HID_UP_CONSUMER == (usage->hid & HID_USAGE_PAGE) \|\|
	HID_UP_KEYBOARD == (usage->hid & HID_USAGE_PAGE)))
	return 0;

	dbg_hid("samsung wireless keyboard input mapping event [0x%x]\n",
	usage->hid & HID_USAGE);

	if (HID_UP_KEYBOARD == (usage->hid & HID_USAGE_PAGE)) {
	switch (usage->hid & HID_USAGE) {
	set_bit(EV_REP, hi->input->evbit);
	/* Only for UK keyboard */
	/* key found */
	#ifdef CONFIG_HID_KK_UPGRADE
	case 0x32:
	samsung_kbd_mouse_map_key_clear(KEY_KBDILLUMTOGGLE);
	break;
	case 0x64:
	samsung_kbd_mouse_map_key_clear(KEY_BACKSLASH);
	break;
	#else
	case 0x32:
	samsung_kbd_mouse_map_key_clear(KEY_BACKSLASH);
	break;
	case 0x64:
	samsung_kbd_mouse_map_key_clear(KEY_102ND);
	break;
	#endif
	/* Only for BR keyboard */
	case 0x87:
	samsung_kbd_mouse_map_key_clear(KEY_RO);
	break;
	default:
	return 0;
	}
	}

	if (HID_UP_CONSUMER == (usage->hid & HID_USAGE_PAGE)) {
	switch (usage->hid & HID_USAGE) {
	/* report 2 */
	/* MENU */
	case 0x040:
	samsung_kbd_mouse_map_key_clear(KEY_MENU);
	break;
	case 0x18a:
	samsung_kbd_mouse_map_key_clear(KEY_MAIL);
	break;
	case 0x196:
	samsung_kbd_mouse_map_key_clear(KEY_WWW);
	break;
	case 0x19e:
	samsung_kbd_mouse_map_key_clear(KEY_SCREENLOCK);
	break;
	case 0x221:
	samsung_kbd_mouse_map_key_clear(KEY_SEARCH);
	break;
	case 0x223:
	samsung_kbd_mouse_map_key_clear(KEY_HOMEPAGE);
	break;
	/* RECENTAPPS */
	case 0x301:
	samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY1);
	break;
	/* APPLICATION */
	case 0x302:
	samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY2);
	break;
	/* Voice search */
	case 0x305:
	samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY4);
	break;
	/* QPANEL on/off */
	case 0x306:
	samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY5);
	break;
	/* SIP on/off */
	case 0x307:
	samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY3);
	break;
	/* LANG */
	case 0x308:
	samsung_kbd_mouse_map_key_clear(KEY_LANGUAGE);
	break;
	case 0x30a:
	samsung_kbd_mouse_map_key_clear(KEY_BRIGHTNESSDOWN);
	break;
	case 0x070:
	samsung_kbd_mouse_map_key_clear(KEY_BRIGHTNESSDOWN);
	break;
	case 0x30b:
	samsung_kbd_mouse_map_key_clear(KEY_BRIGHTNESSUP);
	break;
	case 0x06f:
	samsung_kbd_mouse_map_key_clear(KEY_BRIGHTNESSUP);
	break;
	/* S-Finder */
	case 0x304:
	samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY7);
	break;
	/* Screen Capture */
	case 0x303:
	samsung_kbd_mouse_map_key_clear(KEY_SYSRQ);
	break;
	/* Multi Window */
	case 0x309:
	samsung_kbd_mouse_map_key_clear(BTN_TRIGGER_HAPPY9);
	break;
	/* HotKey App 1 */
	case 0x071:
	samsung_kbd_mouse_map_key_clear(BTN_HOTKEY_APP1);
	break;
	/* HotKey App 2 */
	case 0x072:
	samsung_kbd_mouse_map_key_clear(BTN_HOTKEY_APP2);
	break;
	/* HotKey App 3 */
	case 0x073:
	samsung_kbd_mouse_map_key_clear(BTN_HOTKEY_APP3);
	break;
	/* Dex */
	case 0x06e:
	samsung_kbd_mouse_map_key_clear(KEY_DEX_ON);
	break;
	default:
	return 0;
	}
	}

	return 1;
	}

	static __u8 samsung_report_fixup(struct hid_device hdev, __u8 *rdesc,
	unsigned int *rsize)
	{
	if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product)
	rdesc = samsung_irda_report_fixup(hdev, rdesc, rsize);
	return rdesc;
	}

	static int samsung_input_mapping(struct hid_device hdev, struct hid_input hi,
	struct hid_field field, struct hid_usage usage,
	unsigned long *bit, int max)
	{
	int ret = 0;

	if (USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE == hdev->product)
	ret = samsung_kbd_mouse_input_mapping(hdev,
	hi, field, usage, bit, max);
	else if (hdev->product == USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD)
	ret = samsung_kbd_input_mapping(hdev,
	hi, field, usage, bit, max);
	else if (hdev->product == USB_DEVICE_ID_SAMSUNG_WIRELESS_GAMEPAD)
	ret = samsung_gamepad_input_mapping(hdev,
	hi, field, usage, bit, max);
	else if (hdev->product == USB_DEVICE_ID_SAMSUNG_WIRELESS_ACTIONMOUSE)
	ret = samsung_actionmouse_input_mapping(hdev,
	hi, field, usage, bit, max);
	else if (hdev->product == USB_DEVICE_ID_SAMSUNG_WIRELESS_UNIVERSAL_KBD)
	ret = samsung_universal_kbd_input_mapping(hdev,
	hi, field, usage, bit, max);
	else if (hdev->product == USB_DEVICE_ID_SAMSUNG_WIRELESS_MULTI_HOGP_KBD)
	ret = samsung_universal_kbd_input_mapping(hdev,
	hi, field, usage, bit, max);

	return ret;
	}

	static int samsung_probe(struct hid_device *hdev,
	const struct hid_device_id *id)
	{
	int ret;
	unsigned int cmask = HID_CONNECT_DEFAULT;

	if (!(hid_is_usb(hdev) \|\| hdev->bus == BUS_BLUETOOTH))
	return -EINVAL;

	ret = hid_parse(hdev);
	if (ret) {
	hid_err(hdev, "parse failed\n");
	goto err_free;
	}

	if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product) {
	if (hdev->rsize == 184) {
	/* disable hidinput, force hiddev */
	cmask = (cmask & ~HID_CONNECT_HIDINPUT) \|
	HID_CONNECT_HIDDEV_FORCE;
	}
	}

	ret = hid_hw_start(hdev, cmask);
	if (ret) {
	hid_err(hdev, "hw start failed\n");
	goto err_free;
	}

	return 0;
	err_free:
	return ret;
	}

	static const struct hid_device_id samsung_devices[] = {
	{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
	{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SAMSUNG_ELECTRONICS, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD) },
	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SAMSUNG_ELECTRONICS, USB_DEVICE_ID_SAMSUNG_WIRELESS_GAMEPAD) },
	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SAMSUNG_ELECTRONICS, USB_DEVICE_ID_SAMSUNG_WIRELESS_ACTIONMOUSE) },
	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SAMSUNG_ELECTRONICS, USB_DEVICE_ID_SAMSUNG_WIRELESS_UNIVERSAL_KBD) },
	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SAMSUNG_ELECTRONICS, USB_DEVICE_ID_SAMSUNG_WIRELESS_MULTI_HOGP_KBD) },
	{ }
	};
	MODULE_DEVICE_TABLE(hid, samsung_devices);

	static struct hid_driver samsung_driver = {
	.name = "samsung",
	.id_table = samsung_devices,
	.report_fixup = samsung_report_fixup,
	.input_mapping = samsung_input_mapping,
	.probe = samsung_probe,
	};
	module_hid_driver(samsung_driver);

	MODULE_LICENSE("GPL");