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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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83 lines
2.1 KiB
C
83 lines
2.1 KiB
C
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/*
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* HID driver for some ntrig "special" devices
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*
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* Copyright (c) 1999 Andreas Gal
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* Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
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* Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
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* Copyright (c) 2006-2007 Jiri Kosina
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* Copyright (c) 2007 Paul Walmsley
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* Copyright (c) 2008 Jiri Slaby
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* Copyright (c) 2008 Rafi Rubin
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*
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*/
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/*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*/
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#include <linux/device.h>
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#include <linux/hid.h>
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#include <linux/module.h>
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#include "hid-ids.h"
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#define NTRIG_DUPLICATE_USAGES 0x001
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#define nt_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \
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EV_KEY, (c))
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static int ntrig_input_mapping(struct hid_device *hdev, struct hid_input *hi,
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struct hid_field *field, struct hid_usage *usage,
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unsigned long **bit, int *max)
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{
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if ((usage->hid & HID_USAGE_PAGE) == HID_UP_DIGITIZER &&
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(usage->hid & 0xff) == 0x47) {
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nt_map_key_clear(BTN_TOOL_DOUBLETAP);
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return 1;
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}
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return 0;
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}
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static int ntrig_input_mapped(struct hid_device *hdev, struct hid_input *hi,
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struct hid_field *field, struct hid_usage *usage,
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unsigned long **bit, int *max)
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{
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if (usage->type == EV_KEY || usage->type == EV_REL
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|| usage->type == EV_ABS)
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clear_bit(usage->code, *bit);
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return 0;
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}
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static const struct hid_device_id ntrig_devices[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN),
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.driver_data = NTRIG_DUPLICATE_USAGES },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, ntrig_devices);
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static struct hid_driver ntrig_driver = {
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.name = "ntrig",
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.id_table = ntrig_devices,
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.input_mapping = ntrig_input_mapping,
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.input_mapped = ntrig_input_mapped,
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};
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static int ntrig_init(void)
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{
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return hid_register_driver(&ntrig_driver);
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}
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static void ntrig_exit(void)
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{
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hid_unregister_driver(&ntrig_driver);
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}
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module_init(ntrig_init);
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module_exit(ntrig_exit);
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MODULE_LICENSE("GPL");
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HID_COMPAT_LOAD_DRIVER(ntrig);
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