// SPDX-License-Identifier: GPL-2.0-or-later/* *  HID driver for some cherry "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 */ /* */ #include <linux/device.h>#include <linux/hid.h>#include <linux/module.h> #include "hid-ids.h" /* * Cherry Cymotion keyboard have an invalid HID report descriptor, * that needs fixing before we can parse it. */static const __u8 *ch_report_fixup(struct hid_device *hdev, __u8 *rdesc,		unsigned int *rsize){	if (*rsize >= 18 && rdesc[11] == 0x3c && rdesc[12] == 0x02) {		hid_info(hdev, "fixing up Cherry Cymotion report descriptor\n");		rdesc[11] = rdesc[16] = 0xff;		rdesc[12] = rdesc[17] = 0x03;	}	return rdesc;} #define ch_map_key_clear(c)	hid_map_usage_clear(hi, usage, bit, max, \					EV_KEY, (c))static int ch_input_mapping(struct hid_device *hdev, struct hid_input *hi,		struct hid_field *field, struct hid_usage *usage,		unsigned long **bit, int *max){	if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)		return 0; 	switch (usage->hid & HID_USAGE) {	case 0x301: ch_map_key_clear(KEY_PROG1);	break;	case 0x302: ch_map_key_clear(KEY_PROG2);	break;	case 0x303: ch_map_key_clear(KEY_PROG3);	break;	default:		return 0;	} 	return 1;} static const struct hid_device_id ch_devices[] = {	{ HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },	{ HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },	{ }};MODULE_DEVICE_TABLE(hid, ch_devices); static struct hid_driver ch_driver = {	.name = "cherry",	.id_table = ch_devices,	.report_fixup = ch_report_fixup,	.input_mapping = ch_input_mapping,};module_hid_driver(ch_driver); MODULE_DESCRIPTION("HID driver for some cherry \"special\" devices");MODULE_LICENSE("GPL");