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 18 static 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 34 static const struct hid_device_id penmount_devices[] = { 35 { HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT, USB_DEVICE_ID_PENMOUNT_6000) }, 36 { } 37 }; 38 MODULE_DEVICE_TABLE(hid, penmount_devices); 39 40 static struct hid_driver penmount_driver = { 41 .name = "hid-penmount", 42 .id_table = penmount_devices, 43 .input_mapping = penmount_input_mapping, 44 }; 45 46 module_hid_driver(penmount_driver); 47 48 MODULE_AUTHOR("Christian Gmeiner <christian.gmeiner@gmail.com>"); 49 MODULE_DESCRIPTION("PenMount HID TouchScreen driver"); 50 MODULE_LICENSE("GPL"); 51