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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 | // SPDX-License-Identifier: GPL-2.0+ /* * HID driver for ViewSonic devices not fully compliant with HID standard * * Copyright (c) 2017 Nikolai Kondrashov */ /* * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free * Software Foundation; either version 2 of the License, or (at your option) * any later version. */ #include <linux/device.h> #include <linux/hid.h> #include <linux/module.h> #include "hid-ids.h" /* Size of the original descriptor of PD1011 signature pad */ #define PD1011_RDESC_ORIG_SIZE 408 /* Fixed report descriptor of PD1011 signature pad */ static __u8 pd1011_rdesc_fixed[] = { 0x05, 0x0D, /* Usage Page (Digitizer), */ 0x09, 0x02, /* Usage (Pen), */ 0xA1, 0x01, /* Collection (Application), */ 0x85, 0x02, /* Report ID (2), */ 0x09, 0x20, /* Usage (Stylus), */ 0xA0, /* Collection (Physical), */ 0x75, 0x10, /* Report Size (16), */ 0x95, 0x01, /* Report Count (1), */ 0xA4, /* Push, */ 0x05, 0x01, /* Usage Page (Desktop), */ 0x65, 0x13, /* Unit (Inch), */ 0x55, 0xFD, /* Unit Exponent (-3), */ 0x34, /* Physical Minimum (0), */ 0x09, 0x30, /* Usage (X), */ 0x46, 0x5D, 0x21, /* Physical Maximum (8541), */ 0x27, 0x80, 0xA9, 0x00, 0x00, /* Logical Maximum (43392), */ 0x81, 0x02, /* Input (Variable), */ 0x09, 0x31, /* Usage (Y), */ 0x46, 0xDA, 0x14, /* Physical Maximum (5338), */ 0x26, 0xF0, 0x69, /* Logical Maximum (27120), */ 0x81, 0x02, /* Input (Variable), */ 0xB4, /* Pop, */ 0x14, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x75, 0x01, /* Report Size (1), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x03, /* Input (Constant, Variable), */ 0x09, 0x32, /* Usage (In Range), */ 0x09, 0x42, /* Usage (Tip Switch), */ 0x95, 0x02, /* Report Count (2), */ 0x81, 0x02, /* Input (Variable), */ 0x95, 0x05, /* Report Count (5), */ 0x81, 0x03, /* Input (Constant, Variable), */ 0x75, 0x10, /* Report Size (16), */ 0x95, 0x01, /* Report Count (1), */ 0x09, 0x30, /* Usage (Tip Pressure), */ 0x15, 0x05, /* Logical Minimum (5), */ 0x26, 0xFF, 0x07, /* Logical Maximum (2047), */ 0x81, 0x02, /* Input (Variable), */ 0x75, 0x10, /* Report Size (16), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x03, /* Input (Constant, Variable), */ 0xC0, /* End Collection, */ 0xC0 /* End Collection */ }; static __u8 *viewsonic_report_fixup(struct hid_device *hdev, __u8 *rdesc, unsigned int *rsize) { switch (hdev->product) { case USB_DEVICE_ID_VIEWSONIC_PD1011: case USB_DEVICE_ID_SIGNOTEC_VIEWSONIC_PD1011: if (*rsize == PD1011_RDESC_ORIG_SIZE) { rdesc = pd1011_rdesc_fixed; *rsize = sizeof(pd1011_rdesc_fixed); } break; } return rdesc; } static const struct hid_device_id viewsonic_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_VIEWSONIC, USB_DEVICE_ID_VIEWSONIC_PD1011) }, { HID_USB_DEVICE(USB_VENDOR_ID_SIGNOTEC, USB_DEVICE_ID_SIGNOTEC_VIEWSONIC_PD1011) }, { } }; MODULE_DEVICE_TABLE(hid, viewsonic_devices); static struct hid_driver viewsonic_driver = { .name = "viewsonic", .id_table = viewsonic_devices, .report_fixup = viewsonic_report_fixup, }; module_hid_driver(viewsonic_driver); MODULE_LICENSE("GPL"); |