/* * HID driver for some ntrig "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 * Copyright (c) 2008 Rafi Rubin * */ /* * 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" #define NTRIG_DUPLICATE_USAGES 0x001 #define nt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \ EV_KEY, (c)) static int ntrig_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_DIGITIZER && (usage->hid & 0xff) == 0x47) { nt_map_key_clear(BTN_TOOL_DOUBLETAP); return 1; } return 0; } static int ntrig_input_mapped(struct hid_device *hdev, struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max) { if (usage->type == EV_KEY || usage->type == EV_REL || usage->type == EV_ABS) clear_bit(usage->code, *bit); return 0; } static const struct hid_device_id ntrig_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN), .driver_data = NTRIG_DUPLICATE_USAGES }, { } }; MODULE_DEVICE_TABLE(hid, ntrig_devices); static struct hid_driver ntrig_driver = { .name = "ntrig", .id_table = ntrig_devices, .input_mapping = ntrig_input_mapping, .input_mapped = ntrig_input_mapped, }; static int ntrig_init(void) { return hid_register_driver(&ntrig_driver); } static void ntrig_exit(void) { hid_unregister_driver(&ntrig_driver); } module_init(ntrig_init); module_exit(ntrig_exit); MODULE_LICENSE("GPL"); HID_COMPAT_LOAD_DRIVER(ntrig);