drivers/hid/hid-penmount.c

0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002 /*
0003  *  HID driver for PenMount touchscreens
0004  *
0005  *  Copyright (c) 2014 Christian Gmeiner <christian.gmeiner <at> gmail.com>
0006  *
0007  *  based on hid-penmount copyrighted by
0008  *    PenMount Touch Solutions <penmount <at> seed.net.tw>
0009  */
0010
0011 /*
0012  */
0013
0014 #include <linux/module.h>
0015 #include <linux/hid.h>
0016 #include "hid-ids.h"
0017
0018 static int penmount_input_mapping(struct hid_device *hdev,
0019         struct hid_input *hi, struct hid_field *field,
0020         struct hid_usage *usage, unsigned long **bit, int *max)
0021 {
0022     if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
0023         if (((usage->hid - 1) & HID_USAGE) == 0) {
0024             hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
0025             return 1;
0026         } else {
0027             return -1;
0028         }
0029     }
0030
0031     return 0;
0032 }
0033
0034 static const struct hid_device_id penmount_devices[] = {
0035     { HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT, USB_DEVICE_ID_PENMOUNT_6000) },
0036     { }
0037 };
0038 MODULE_DEVICE_TABLE(hid, penmount_devices);
0039
0040 static struct hid_driver penmount_driver = {
0041     .name = "hid-penmount",
0042     .id_table = penmount_devices,
0043     .input_mapping = penmount_input_mapping,
0044 };
0045
0046 module_hid_driver(penmount_driver);
0047
0048 MODULE_AUTHOR("Christian Gmeiner <christian.gmeiner@gmail.com>");
0049 MODULE_DESCRIPTION("PenMount HID TouchScreen driver");
0050 MODULE_LICENSE("GPL");