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 cherry "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/hid.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include "hid-ids.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)  * Cherry Cymotion keyboard have an invalid HID report descriptor,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)  * that needs fixing before we can parse it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) static __u8 *ch_report_fixup(struct hid_device *hdev, __u8 *rdesc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 		unsigned int *rsize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	if (*rsize >= 18 && rdesc[11] == 0x3c && rdesc[12] == 0x02) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 		hid_info(hdev, "fixing up Cherry Cymotion report descriptor\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 		rdesc[11] = rdesc[16] = 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 		rdesc[12] = rdesc[17] = 0x03;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	return rdesc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define ch_map_key_clear(c)	hid_map_usage_clear(hi, usage, bit, max, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 					EV_KEY, (c))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static int ch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 		struct hid_field *field, struct hid_usage *usage,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 		unsigned long **bit, int *max)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	switch (usage->hid & HID_USAGE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	case 0x301: ch_map_key_clear(KEY_PROG1);	break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	case 0x302: ch_map_key_clear(KEY_PROG2);	break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	case 0x303: ch_map_key_clear(KEY_PROG3);	break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) static const struct hid_device_id ch_devices[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
^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) MODULE_DEVICE_TABLE(hid, ch_devices);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) static struct hid_driver ch_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 	.name = "cherry",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 	.id_table = ch_devices,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 	.report_fixup = ch_report_fixup,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 	.input_mapping = ch_input_mapping,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) module_hid_driver(ch_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) MODULE_LICENSE("GPL");