William Whistler | af8cd70 | 2019-01-14 17:50:07 +0000 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | /* |
| 3 | * HID driver for Maltron L90 |
| 4 | * |
| 5 | * Copyright (c) 1999 Andreas Gal |
| 6 | * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz> |
| 7 | * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc |
| 8 | * Copyright (c) 2008 Jiri Slaby |
| 9 | * Copyright (c) 2012 David Dillow <dave@thedillows.org> |
| 10 | * Copyright (c) 2006-2013 Jiri Kosina |
| 11 | * Copyright (c) 2013 Colin Leitner <colin.leitner@gmail.com> |
| 12 | * Copyright (c) 2014-2016 Frank Praznik <frank.praznik@gmail.com> |
| 13 | * Copyright (c) 2010 Richard Nauber <Richard.Nauber@gmail.com> |
| 14 | * Copyright (c) 2016 Yuxuan Shui <yshuiv7@gmail.com> |
| 15 | * Copyright (c) 2018 William Whistler <wtbw@wtbw.co.uk> |
| 16 | */ |
| 17 | |
| 18 | #include <linux/device.h> |
| 19 | #include <linux/hid.h> |
| 20 | #include <linux/module.h> |
| 21 | |
| 22 | #include "hid-ids.h" |
| 23 | |
| 24 | /* The original buggy USB descriptor */ |
| 25 | static u8 maltron_rdesc_o[] = { |
| 26 | 0x05, 0x01, /* Usage Page (Generic Desktop Ctrls) */ |
| 27 | 0x09, 0x80, /* Usage (Sys Control) */ |
| 28 | 0xA1, 0x01, /* Collection (Application) */ |
| 29 | 0x85, 0x02, /* Report ID (2) */ |
| 30 | 0x75, 0x01, /* Report Size (1) */ |
| 31 | 0x95, 0x01, /* Report Count (1) */ |
| 32 | 0x15, 0x00, /* Logical Minimum (0) */ |
| 33 | 0x25, 0x01, /* Logical Maximum (1) */ |
| 34 | 0x09, 0x82, /* Usage (Sys Sleep) */ |
| 35 | 0x81, 0x06, /* Input (Data,Var,Rel) */ |
| 36 | 0x09, 0x82, /* Usage (Sys Sleep) */ |
| 37 | 0x81, 0x06, /* Input (Data,Var,Rel) */ |
| 38 | 0x09, 0x83, /* Usage (Sys Wake Up) */ |
| 39 | 0x81, 0x06, /* Input (Data,Var,Rel) */ |
| 40 | 0x75, 0x05, /* Report Size (5) */ |
| 41 | 0x81, 0x01, /* Input (Const,Array,Abs) */ |
| 42 | 0xC0, /* End Collection */ |
| 43 | 0x05, 0x0C, /* Usage Page (Consumer) */ |
| 44 | 0x09, 0x01, /* Usage (Consumer Control) */ |
| 45 | 0xA1, 0x01, /* Collection (Application) */ |
| 46 | 0x85, 0x03, /* Report ID (3) */ |
| 47 | 0x95, 0x01, /* Report Count (1) */ |
| 48 | 0x75, 0x10, /* Report Size (16) */ |
| 49 | 0x19, 0x00, /* Usage Minimum (Unassigned) */ |
| 50 | 0x2A, 0xFF, 0x7F, /* Usage Maximum (0x7FFF) */ |
| 51 | 0x81, 0x00, /* Input (Data,Array,Abs) */ |
| 52 | 0xC0, /* End Collection */ |
| 53 | 0x06, 0x7F, 0xFF, /* Usage Page (Vendor Defined 0xFF7F) */ |
| 54 | 0x09, 0x01, /* Usage (0x01) */ |
| 55 | 0xA1, 0x01, /* Collection (Application) */ |
| 56 | 0x85, 0x04, /* Report ID (4) */ |
| 57 | 0x95, 0x01, /* Report Count (1) */ |
| 58 | 0x75, 0x10, /* Report Size (16) */ |
| 59 | 0x19, 0x00, /* Usage Minimum (0x00) */ |
| 60 | 0x2A, 0xFF, 0x7F, /* Usage Maximum (0x7FFF) */ |
| 61 | 0x81, 0x00, /* Input (Data,Array,Abs) */ |
| 62 | 0x75, 0x02, /* Report Size (2) */ |
| 63 | 0x25, 0x02, /* Logical Maximum (2) */ |
| 64 | 0x09, 0x90, /* Usage (0x90) */ |
| 65 | 0xB1, 0x02, /* Feature (Data,Var,Abs) */ |
| 66 | 0x75, 0x06, /* Report Size (6) */ |
| 67 | 0xB1, 0x01, /* Feature (Const,Array,Abs) */ |
| 68 | 0x75, 0x01, /* Report Size (1) */ |
| 69 | 0x25, 0x01, /* Logical Maximum (1) */ |
| 70 | 0x05, 0x08, /* Usage Page (LEDs) */ |
| 71 | 0x09, 0x2A, /* Usage (On-Line) */ |
| 72 | 0x91, 0x02, /* Output (Data,Var,Abs) */ |
| 73 | 0x09, 0x4B, /* Usage (Generic Indicator) */ |
| 74 | 0x91, 0x02, /* Output (Data,Var,Abs) */ |
| 75 | 0x75, 0x06, /* Report Size (6) */ |
| 76 | 0x95, 0x01, /* Report Count (1) */ |
| 77 | 0x91, 0x01, /* Output (Const,Array,Abs) */ |
| 78 | 0xC0 /* End Collection */ |
| 79 | }; |
| 80 | |
| 81 | /* The patched descriptor, allowing media key events to be accepted as valid */ |
| 82 | static u8 maltron_rdesc[] = { |
| 83 | 0x05, 0x01, /* Usage Page (Generic Desktop Ctrls) */ |
| 84 | 0x09, 0x80, /* Usage (Sys Control) */ |
| 85 | 0xA1, 0x01, /* Collection (Application) */ |
| 86 | 0x85, 0x02, /* Report ID (2) */ |
| 87 | 0x75, 0x01, /* Report Size (1) */ |
| 88 | 0x95, 0x01, /* Report Count (1) */ |
| 89 | 0x15, 0x00, /* Logical Minimum (0) */ |
| 90 | 0x25, 0x01, /* Logical Maximum (1) */ |
| 91 | 0x09, 0x82, /* Usage (Sys Sleep) */ |
| 92 | 0x81, 0x06, /* Input (Data,Var,Rel) */ |
| 93 | 0x09, 0x82, /* Usage (Sys Sleep) */ |
| 94 | 0x81, 0x06, /* Input (Data,Var,Rel) */ |
| 95 | 0x09, 0x83, /* Usage (Sys Wake Up) */ |
| 96 | 0x81, 0x06, /* Input (Data,Var,Rel) */ |
| 97 | 0x75, 0x05, /* Report Size (5) */ |
| 98 | 0x81, 0x01, /* Input (Const,Array,Abs) */ |
| 99 | 0xC0, /* End Collection */ |
| 100 | 0x05, 0x0C, /* Usage Page (Consumer) */ |
| 101 | 0x09, 0x01, /* Usage (Consumer Control) */ |
| 102 | 0xA1, 0x01, /* Collection (Application) */ |
| 103 | 0x85, 0x03, /* Report ID (3) */ |
| 104 | 0x15, 0x00, /* Logical Minimum (0) - changed */ |
| 105 | 0x26, 0xFF, 0x7F, /* Logical Maximum (32767) - changed */ |
| 106 | 0x95, 0x01, /* Report Count (1) */ |
| 107 | 0x75, 0x10, /* Report Size (16) */ |
| 108 | 0x19, 0x00, /* Usage Minimum (Unassigned) */ |
| 109 | 0x2A, 0xFF, 0x7F, /* Usage Maximum (0x7FFF) */ |
| 110 | 0x81, 0x00, /* Input (Data,Array,Abs) */ |
| 111 | 0xC0, /* End Collection */ |
| 112 | 0x06, 0x7F, 0xFF, /* Usage Page (Vendor Defined 0xFF7F) */ |
| 113 | 0x09, 0x01, /* Usage (0x01) */ |
| 114 | 0xA1, 0x01, /* Collection (Application) */ |
| 115 | 0x85, 0x04, /* Report ID (4) */ |
| 116 | 0x95, 0x01, /* Report Count (1) */ |
| 117 | 0x75, 0x10, /* Report Size (16) */ |
| 118 | 0x19, 0x00, /* Usage Minimum (0x00) */ |
| 119 | 0x2A, 0xFF, 0x7F, /* Usage Maximum (0x7FFF) */ |
| 120 | 0x81, 0x00, /* Input (Data,Array,Abs) */ |
| 121 | 0x75, 0x02, /* Report Size (2) */ |
| 122 | 0x25, 0x02, /* Logical Maximum (2) */ |
| 123 | 0x09, 0x90, /* Usage (0x90) */ |
| 124 | 0xB1, 0x02, /* Feature (Data,Var,Abs) */ |
| 125 | 0x75, 0x06, /* Report Size (6) */ |
| 126 | 0xB1, 0x01, /* Feature (Const,Array,Abs) */ |
| 127 | 0x75, 0x01, /* Report Size (1) */ |
| 128 | 0x25, 0x01, /* Logical Maximum (1) */ |
| 129 | 0x05, 0x08, /* Usage Page (LEDs) */ |
| 130 | 0x09, 0x2A, /* Usage (On-Line) */ |
| 131 | 0x91, 0x02, /* Output (Data,Var,Abs) */ |
| 132 | 0x09, 0x4B, /* Usage (Generic Indicator) */ |
| 133 | 0x91, 0x02, /* Output (Data,Var,Abs) */ |
| 134 | 0x75, 0x06, /* Report Size (6) */ |
| 135 | 0x95, 0x01, /* Report Count (1) */ |
| 136 | 0x91, 0x01, /* Output (Const,Array,Abs) */ |
| 137 | 0xC0 /* End Collection */ |
| 138 | }; |
| 139 | |
| 140 | static __u8 *maltron_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
| 141 | unsigned int *rsize) |
| 142 | { |
| 143 | if (*rsize == sizeof(maltron_rdesc_o) && |
| 144 | !memcmp(maltron_rdesc_o, rdesc, sizeof(maltron_rdesc_o))) { |
| 145 | hid_info(hdev, "Replacing Maltron L90 keyboard report descriptor\n"); |
| 146 | *rsize = sizeof(maltron_rdesc); |
| 147 | return maltron_rdesc; |
| 148 | } |
| 149 | return rdesc; |
| 150 | } |
| 151 | |
| 152 | static const struct hid_device_id maltron_devices[] = { |
| 153 | { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_MALTRON_KB)}, |
| 154 | { } |
| 155 | }; |
| 156 | MODULE_DEVICE_TABLE(hid, maltron_devices); |
| 157 | |
| 158 | static struct hid_driver maltron_driver = { |
| 159 | .name = "maltron", |
| 160 | .id_table = maltron_devices, |
| 161 | .report_fixup = maltron_report_fixup |
| 162 | }; |
| 163 | module_hid_driver(maltron_driver); |
| 164 | |
| 165 | MODULE_LICENSE("GPL"); |