| Quellcodebibliothek Statistik Leitseite products/sources/formale Sprachen/C/Linux/include/linux/ (Open Source Betriebssystem Version 6.17.9©) Datei vom 24.10.2025 mit Größe 2 kB |
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Quelle libps2.h Sprache: C |
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/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef _LIBPS2_H #define _LIBPS2_H /* * Copyright (C) 1999-2002 Vojtech Pavlik * Copyright (C) 2004 Dmitry Torokhov */ #include <linux/bitops.h> #include <linux/interrupt.h> #include <linux/mutex.h> #include <linux/types.h> #include <linux/wait.h> struct ps2dev; /** * enum ps2_disposition - indicates how received byte should be handled * @PS2_PROCESS: pass to the main protocol handler, process normally * @PS2_IGNORE: skip the byte * @PS2_ERROR: do not process the byte, abort command in progress */ enum ps2_disposition { PS2_PROCESS, PS2_IGNORE, PS2_ERROR, }; typedef enum ps2_disposition (*ps2_pre_receive_handler_t)(struct ps2dev *, u8, unsigned int); typedef void (*ps2_receive_handler_t)(struct ps2dev *, u8); /** * struct ps2dev - represents a device using PS/2 protocol * @serio: a serio port used by the PS/2 device * @cmd_mutex: a mutex ensuring that only one command is executing at a time * @wait: a waitqueue used to signal completion from the serio interrupt handler * @flags: various internal flags indicating stages of PS/2 command execution * @cmdbuf: buffer holding command response * @cmdcnt: outstanding number of bytes of the command response * @nak: a byte transmitted by the device when it refuses command * @pre_receive_handler: checks communication errors and returns disposition * (&enum ps2_disposition) of the received data byte * @receive_handler: main handler of particular PS/2 protocol, such as keyboard * or mouse protocol */ struct ps2dev { struct serio *serio; struct mutex cmd_mutex; wait_queue_head_t wait; unsigned long flags; u8 cmdbuf[8]; u8 cmdcnt; u8 nak; ps2_pre_receive_handler_t pre_receive_handler; ps2_receive_handler_t receive_handler; }; void ps2_init(struct ps2dev *ps2dev, struct serio *serio, ps2_pre_receive_handler_t pre_receive_handler, ps2_receive_handler_t receive_handler); int ps2_sendbyte(struct ps2dev *ps2dev, u8 byte, unsigned int timeout); void ps2_drain(struct ps2dev *ps2dev, size_t maxbytes, unsigned int timeout); void ps2_begin_command(struct ps2dev *ps2dev); void ps2_end_command(struct ps2dev *ps2dev); int __ps2_command(struct ps2dev *ps2dev, u8 *param, unsigned int command); int ps2_command(struct ps2dev *ps2dev, u8 *param, unsigned int command); int ps2_sliced_command(struct ps2dev *ps2dev, u8 command); bool ps2_is_keyboard_id(u8 id); irqreturn_t ps2_interrupt(struct serio *serio, u8 data, unsigned int flags); #endif /* _LIBPS2_H */ ¤ Dauer der Verarbeitung: 0.27 Sekunden (vorverarbeitet) ¤*© Formatika GbR, Deutschland |
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2026-03-28