/* * 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) 2007 Paul Walmsley * Copyright (c) 2008 Jiri Slaby */ /* * 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/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 void ch_report_fixup(struct hid_device *hdev, __u8 *rdesc, unsigned int rsize) { if (rsize >= 17 && rdesc[11] == 0x3c && rdesc[12] == 0x02) { dev_info(&hdev->dev, "fixing up Cherry Cymotion report " "descriptor\n"); rdesc[11] = rdesc[16] = 0xff; rdesc[12] = rdesc[17] = 0x03; } } #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) }, { } }; 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, }; static int ch_init(void) { return hid_register_driver(&ch_driver); } static void ch_exit(void) { hid_unregister_driver(&ch_driver); } module_init(ch_init); module_exit(ch_exit); MODULE_LICENSE("GPL");