| Rafi Rubin | 94011f9 | 2008-11-19 15:54:46 +0100 | [diff] [blame] | 1 | /* |
| 2 | * HID driver for some ntrig "special" devices |
| 3 | * |
| 4 | * Copyright (c) 1999 Andreas Gal |
| 5 | * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz> |
| 6 | * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc |
| 7 | * Copyright (c) 2006-2007 Jiri Kosina |
| 8 | * Copyright (c) 2007 Paul Walmsley |
| 9 | * Copyright (c) 2008 Jiri Slaby |
| 10 | * Copyright (c) 2008 Rafi Rubin |
| 11 | * |
| 12 | */ |
| 13 | |
| 14 | /* |
| 15 | * This program is free software; you can redistribute it and/or modify it |
| 16 | * under the terms of the GNU General Public License as published by the Free |
| 17 | * Software Foundation; either version 2 of the License, or (at your option) |
| 18 | * any later version. |
| 19 | */ |
| 20 | |
| 21 | #include <linux/device.h> |
| 22 | #include <linux/hid.h> |
| 23 | #include <linux/module.h> |
| 24 | |
| 25 | #include "hid-ids.h" |
| 26 | |
| 27 | #define NTRIG_DUPLICATE_USAGES 0x001 |
| 28 | |
| 29 | #define nt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \ |
| 30 | EV_KEY, (c)) |
| 31 | |
| 32 | static int ntrig_input_mapping(struct hid_device *hdev, struct hid_input *hi, |
| 33 | struct hid_field *field, struct hid_usage *usage, |
| 34 | unsigned long **bit, int *max) |
| 35 | { |
| 36 | if ((usage->hid & HID_USAGE_PAGE) == HID_UP_DIGITIZER && |
| 37 | (usage->hid & 0xff) == 0x47) { |
| 38 | nt_map_key_clear(BTN_TOOL_DOUBLETAP); |
| 39 | return 1; |
| 40 | } |
| 41 | return 0; |
| 42 | } |
| 43 | |
| 44 | static int ntrig_input_mapped(struct hid_device *hdev, struct hid_input *hi, |
| 45 | struct hid_field *field, struct hid_usage *usage, |
| 46 | unsigned long **bit, int *max) |
| 47 | { |
| 48 | if (usage->type == EV_KEY || usage->type == EV_REL |
| 49 | || usage->type == EV_ABS) |
| 50 | clear_bit(usage->code, *bit); |
| 51 | |
| 52 | return 0; |
| 53 | } |
| 54 | static const struct hid_device_id ntrig_devices[] = { |
| 55 | { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN), |
| 56 | .driver_data = NTRIG_DUPLICATE_USAGES }, |
| 57 | { } |
| 58 | }; |
| 59 | MODULE_DEVICE_TABLE(hid, ntrig_devices); |
| 60 | |
| 61 | static struct hid_driver ntrig_driver = { |
| 62 | .name = "ntrig", |
| 63 | .id_table = ntrig_devices, |
| 64 | .input_mapping = ntrig_input_mapping, |
| 65 | .input_mapped = ntrig_input_mapped, |
| 66 | }; |
| 67 | |
| 68 | static int ntrig_init(void) |
| 69 | { |
| 70 | return hid_register_driver(&ntrig_driver); |
| 71 | } |
| 72 | |
| 73 | static void ntrig_exit(void) |
| 74 | { |
| 75 | hid_unregister_driver(&ntrig_driver); |
| 76 | } |
| 77 | |
| 78 | module_init(ntrig_init); |
| 79 | module_exit(ntrig_exit); |
| 80 | MODULE_LICENSE("GPL"); |