| /* SPDX-License-Identifier: LGPL-2.0+ WITH Linux-syscall-note */ |
| /* |
| * userio: virtual serio device support |
| * Copyright (C) 2015 Red Hat |
| * Copyright (C) 2015 Lyude (Stephen Chandler Paul) <cpaul@redhat.com> |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU Lesser General Public License as published by the |
| * Free Software Foundation; either version 2 of the License, or (at your |
| * option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
| * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more |
| * details. |
| * |
| * This is the public header used for user-space communication with the userio |
| * driver. __attribute__((__packed__)) is used for all structs to keep ABI |
| * compatibility between all architectures. |
| */ |
| |
| #ifndef _USERIO_H |
| #define _USERIO_H |
| |
| #include <linux/types.h> |
| |
| enum userio_cmd_type { |
| USERIO_CMD_REGISTER = 0, |
| USERIO_CMD_SET_PORT_TYPE = 1, |
| USERIO_CMD_SEND_INTERRUPT = 2 |
| }; |
| |
| /* |
| * userio Commands |
| * All commands sent to /dev/userio are encoded using this structure. The type |
| * field should contain a USERIO_CMD* value that indicates what kind of command |
| * is being sent to userio. The data field should contain the accompanying |
| * argument for the command, if there is one. |
| */ |
| struct userio_cmd { |
| __u8 type; |
| __u8 data; |
| } __attribute__((__packed__)); |
| |
| #endif /* !_USERIO_H */ |
