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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273// 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");