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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 | // SPDX-License-Identifier: GPL-2.0
/*
* HID driver for Maltron L90
*
* Copyright (c) 1999 Andreas Gal
* Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
* Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
* Copyright (c) 2008 Jiri Slaby
* Copyright (c) 2012 David Dillow <dave@thedillows.org>
* Copyright (c) 2006-2013 Jiri Kosina
* Copyright (c) 2013 Colin Leitner <colin.leitner@gmail.com>
* Copyright (c) 2014-2016 Frank Praznik <frank.praznik@gmail.com>
* Copyright (c) 2010 Richard Nauber <Richard.Nauber@gmail.com>
* Copyright (c) 2016 Yuxuan Shui <yshuiv7@gmail.com>
* Copyright (c) 2018 William Whistler <wtbw@wtbw.co.uk>
*/
#include <linux/device.h>
#include <linux/hid.h>
#include <linux/module.h>
#include "hid-ids.h"
/* The original buggy USB descriptor */
static u8 maltron_rdesc_o[] = {
0x05, 0x01, /* Usage Page (Generic Desktop Ctrls) */
0x09, 0x80, /* Usage (Sys Control) */
0xA1, 0x01, /* Collection (Application) */
0x85, 0x02, /* Report ID (2) */
0x75, 0x01, /* Report Size (1) */
0x95, 0x01, /* Report Count (1) */
0x15, 0x00, /* Logical Minimum (0) */
0x25, 0x01, /* Logical Maximum (1) */
0x09, 0x82, /* Usage (Sys Sleep) */
0x81, 0x06, /* Input (Data,Var,Rel) */
0x09, 0x82, /* Usage (Sys Sleep) */
0x81, 0x06, /* Input (Data,Var,Rel) */
0x09, 0x83, /* Usage (Sys Wake Up) */
0x81, 0x06, /* Input (Data,Var,Rel) */
0x75, 0x05, /* Report Size (5) */
0x81, 0x01, /* Input (Const,Array,Abs) */
0xC0, /* End Collection */
0x05, 0x0C, /* Usage Page (Consumer) */
0x09, 0x01, /* Usage (Consumer Control) */
0xA1, 0x01, /* Collection (Application) */
0x85, 0x03, /* Report ID (3) */
0x95, 0x01, /* Report Count (1) */
0x75, 0x10, /* Report Size (16) */
0x19, 0x00, /* Usage Minimum (Unassigned) */
0x2A, 0xFF, 0x7F, /* Usage Maximum (0x7FFF) */
0x81, 0x00, /* Input (Data,Array,Abs) */
0xC0, /* End Collection */
0x06, 0x7F, 0xFF, /* Usage Page (Vendor Defined 0xFF7F) */
0x09, 0x01, /* Usage (0x01) */
0xA1, 0x01, /* Collection (Application) */
0x85, 0x04, /* Report ID (4) */
0x95, 0x01, /* Report Count (1) */
0x75, 0x10, /* Report Size (16) */
0x19, 0x00, /* Usage Minimum (0x00) */
0x2A, 0xFF, 0x7F, /* Usage Maximum (0x7FFF) */
0x81, 0x00, /* Input (Data,Array,Abs) */
0x75, 0x02, /* Report Size (2) */
0x25, 0x02, /* Logical Maximum (2) */
0x09, 0x90, /* Usage (0x90) */
0xB1, 0x02, /* Feature (Data,Var,Abs) */
0x75, 0x06, /* Report Size (6) */
0xB1, 0x01, /* Feature (Const,Array,Abs) */
0x75, 0x01, /* Report Size (1) */
0x25, 0x01, /* Logical Maximum (1) */
0x05, 0x08, /* Usage Page (LEDs) */
0x09, 0x2A, /* Usage (On-Line) */
0x91, 0x02, /* Output (Data,Var,Abs) */
0x09, 0x4B, /* Usage (Generic Indicator) */
0x91, 0x02, /* Output (Data,Var,Abs) */
0x75, 0x06, /* Report Size (6) */
0x95, 0x01, /* Report Count (1) */
0x91, 0x01, /* Output (Const,Array,Abs) */
0xC0 /* End Collection */
};
/* The patched descriptor, allowing media key events to be accepted as valid */
static u8 maltron_rdesc[] = {
0x05, 0x01, /* Usage Page (Generic Desktop Ctrls) */
0x09, 0x80, /* Usage (Sys Control) */
0xA1, 0x01, /* Collection (Application) */
0x85, 0x02, /* Report ID (2) */
0x75, 0x01, /* Report Size (1) */
0x95, 0x01, /* Report Count (1) */
0x15, 0x00, /* Logical Minimum (0) */
0x25, 0x01, /* Logical Maximum (1) */
0x09, 0x82, /* Usage (Sys Sleep) */
0x81, 0x06, /* Input (Data,Var,Rel) */
0x09, 0x82, /* Usage (Sys Sleep) */
0x81, 0x06, /* Input (Data,Var,Rel) */
0x09, 0x83, /* Usage (Sys Wake Up) */
0x81, 0x06, /* Input (Data,Var,Rel) */
0x75, 0x05, /* Report Size (5) */
0x81, 0x01, /* Input (Const,Array,Abs) */
0xC0, /* End Collection */
0x05, 0x0C, /* Usage Page (Consumer) */
0x09, 0x01, /* Usage (Consumer Control) */
0xA1, 0x01, /* Collection (Application) */
0x85, 0x03, /* Report ID (3) */
0x15, 0x00, /* Logical Minimum (0) - changed */
0x26, 0xFF, 0x7F, /* Logical Maximum (32767) - changed */
0x95, 0x01, /* Report Count (1) */
0x75, 0x10, /* Report Size (16) */
0x19, 0x00, /* Usage Minimum (Unassigned) */
0x2A, 0xFF, 0x7F, /* Usage Maximum (0x7FFF) */
0x81, 0x00, /* Input (Data,Array,Abs) */
0xC0, /* End Collection */
0x06, 0x7F, 0xFF, /* Usage Page (Vendor Defined 0xFF7F) */
0x09, 0x01, /* Usage (0x01) */
0xA1, 0x01, /* Collection (Application) */
0x85, 0x04, /* Report ID (4) */
0x95, 0x01, /* Report Count (1) */
0x75, 0x10, /* Report Size (16) */
0x19, 0x00, /* Usage Minimum (0x00) */
0x2A, 0xFF, 0x7F, /* Usage Maximum (0x7FFF) */
0x81, 0x00, /* Input (Data,Array,Abs) */
0x75, 0x02, /* Report Size (2) */
0x25, 0x02, /* Logical Maximum (2) */
0x09, 0x90, /* Usage (0x90) */
0xB1, 0x02, /* Feature (Data,Var,Abs) */
0x75, 0x06, /* Report Size (6) */
0xB1, 0x01, /* Feature (Const,Array,Abs) */
0x75, 0x01, /* Report Size (1) */
0x25, 0x01, /* Logical Maximum (1) */
0x05, 0x08, /* Usage Page (LEDs) */
0x09, 0x2A, /* Usage (On-Line) */
0x91, 0x02, /* Output (Data,Var,Abs) */
0x09, 0x4B, /* Usage (Generic Indicator) */
0x91, 0x02, /* Output (Data,Var,Abs) */
0x75, 0x06, /* Report Size (6) */
0x95, 0x01, /* Report Count (1) */
0x91, 0x01, /* Output (Const,Array,Abs) */
0xC0 /* End Collection */
};
static __u8 *maltron_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
if (*rsize == sizeof(maltron_rdesc_o) &&
!memcmp(maltron_rdesc_o, rdesc, sizeof(maltron_rdesc_o))) {
hid_info(hdev, "Replacing Maltron L90 keyboard report descriptor\n");
*rsize = sizeof(maltron_rdesc);
return maltron_rdesc;
}
return rdesc;
}
static const struct hid_device_id maltron_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_MALTRON_KB)},
{ }
};
MODULE_DEVICE_TABLE(hid, maltron_devices);
static struct hid_driver maltron_driver = {
.name = "maltron",
.id_table = maltron_devices,
.report_fixup = maltron_report_fixup
};
module_hid_driver(maltron_driver);
MODULE_LICENSE("GPL");
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