Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  *  HID driver for some ezkey "special" devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *  Copyright (c) 1999 Andreas Gal
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  *  Copyright (c) 2006-2007 Jiri Kosina
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  *  Copyright (c) 2008 Jiri Slaby
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/hid.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include "hid-ids.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define ez_map_rel(c)	hid_map_usage(hi, usage, bit, max, EV_REL, (c))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define ez_map_key(c)	hid_map_usage(hi, usage, bit, max, EV_KEY, (c))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) static int ez_input_mapping(struct hid_device *hdev, struct hid_input *hi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 		struct hid_field *field, struct hid_usage *usage,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 		unsigned long **bit, int *max)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	switch (usage->hid & HID_USAGE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	case 0x230: ez_map_key(BTN_MOUSE);	break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	case 0x231: ez_map_rel(REL_WHEEL);	break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	 * this keyboard has a scrollwheel implemented in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	 * totally broken way. We map this usage temporarily
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	 * to HWHEEL and handle it in the event quirk handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	case 0x232: ez_map_rel(REL_HWHEEL);	break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) static int ez_event(struct hid_device *hdev, struct hid_field *field,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 		struct hid_usage *usage, __s32 value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 			!usage->type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	/* handle the temporary quirky mapping to HWHEEL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	if (usage->type == EV_REL && usage->code == REL_HWHEEL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 		struct input_dev *input = field->hidinput->input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 		input_event(input, usage->type, REL_WHEEL, -value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 		return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) static const struct hid_device_id ez_devices[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 	{ HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) MODULE_DEVICE_TABLE(hid, ez_devices);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) static struct hid_driver ez_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 	.name = "ezkey",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 	.id_table = ez_devices,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 	.input_mapping = ez_input_mapping,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 	.event = ez_event,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) module_hid_driver(ez_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) MODULE_LICENSE("GPL");