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- // SPDX-License-Identifier: GPL-2.0
- /*
- * HID driver for Maltron L90
- *
- * Copyright (c) 1999 Andreas Gal
- * Copyright (c) 2000-2005 Vojtech Pavlik <[email protected]>
- * Copyright (c) 2005 Michael Haboustak <[email protected]> for Concept2, Inc
- * Copyright (c) 2008 Jiri Slaby
- * Copyright (c) 2012 David Dillow <[email protected]>
- * Copyright (c) 2006-2013 Jiri Kosina
- * Copyright (c) 2013 Colin Leitner <[email protected]>
- * Copyright (c) 2014-2016 Frank Praznik <[email protected]>
- * Copyright (c) 2010 Richard Nauber <[email protected]>
- * Copyright (c) 2016 Yuxuan Shui <[email protected]>
- * Copyright (c) 2018 William Whistler <[email protected]>
- */
- #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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