cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

hid-penmount.c (1253B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/*
      3 *  HID driver for PenMount touchscreens
      4 *
      5 *  Copyright (c) 2014 Christian Gmeiner <christian.gmeiner <at> gmail.com>
      6 *
      7 *  based on hid-penmount copyrighted by
      8 *    PenMount Touch Solutions <penmount <at> seed.net.tw>
      9 */
     10
     11/*
     12 */
     13
     14#include <linux/module.h>
     15#include <linux/hid.h>
     16#include "hid-ids.h"
     17
     18static int penmount_input_mapping(struct hid_device *hdev,
     19		struct hid_input *hi, struct hid_field *field,
     20		struct hid_usage *usage, unsigned long **bit, int *max)
     21{
     22	if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
     23		if (((usage->hid - 1) & HID_USAGE) == 0) {
     24			hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
     25			return 1;
     26		} else {
     27			return -1;
     28		}
     29	}
     30
     31	return 0;
     32}
     33
     34static const struct hid_device_id penmount_devices[] = {
     35	{ HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT, USB_DEVICE_ID_PENMOUNT_6000) },
     36	{ }
     37};
     38MODULE_DEVICE_TABLE(hid, penmount_devices);
     39
     40static struct hid_driver penmount_driver = {
     41	.name = "hid-penmount",
     42	.id_table = penmount_devices,
     43	.input_mapping = penmount_input_mapping,
     44};
     45
     46module_hid_driver(penmount_driver);
     47
     48MODULE_AUTHOR("Christian Gmeiner <christian.gmeiner@gmail.com>");
     49MODULE_DESCRIPTION("PenMount HID TouchScreen driver");
     50MODULE_LICENSE("GPL");