// SPDX-License-Identifier: GPL-2.0-only /* ir-mce_kbd-decoder.c - A decoder for the RC6-ish keyboard/mouse IR protocol * used by the Microsoft Remote Keyboard for Windows Media Center Edition, * referred to by Microsoft's Windows Media Center remote specification docs * as "an internal protocol called MCIR-2". * * Copyright (C) 2011 by Jarod Wilson <[email protected]> */ #include <linux/module.h> #include "rc-core-priv.h" /* * This decoder currently supports: * - MCIR-2 29-bit IR signals used for mouse movement and buttons * - MCIR-2 32-bit IR signals used for standard keyboard keys * * The media keys on the keyboard send RC-6 signals that are indistinguishable * from the keys of the same name on the stock MCE remote, and will be handled * by the standard RC-6 decoder, and be made available to the system via the * input device for the remote, rather than the keyboard/mouse one. */ #define MCIR2_UNIT … #define MCIR2_HEADER_NBITS … #define MCIR2_MOUSE_NBITS … #define MCIR2_KEYBOARD_NBITS … #define MCIR2_PREFIX_PULSE … #define MCIR2_PREFIX_SPACE … #define MCIR2_MAX_LEN … #define MCIR2_BIT_START … #define MCIR2_BIT_END … #define MCIR2_BIT_0 … #define MCIR2_BIT_SET … #define MCIR2_MODE_MASK … #define MCIR2_KEYBOARD_HEADER … #define MCIR2_MOUSE_HEADER … #define MCIR2_MASK_KEYS_START … enum mce_kbd_mode { … }; enum mce_kbd_state { … }; static unsigned char kbd_keycodes[256] = …; static void mce_kbd_rx_timeout(struct timer_list *t) { … } static enum mce_kbd_mode mce_kbd_mode(struct mce_kbd_dec *data) { … } static void ir_mce_kbd_process_keyboard_data(struct rc_dev *dev, u32 scancode) { … } static void ir_mce_kbd_process_mouse_data(struct rc_dev *dev, u32 scancode) { … } /** * ir_mce_kbd_decode() - Decode one mce_kbd pulse or space * @dev: the struct rc_dev descriptor of the device * @ev: the struct ir_raw_event descriptor of the pulse/space * * This function returns -EINVAL if the pulse violates the state machine */ static int ir_mce_kbd_decode(struct rc_dev *dev, struct ir_raw_event ev) { … } static int ir_mce_kbd_register(struct rc_dev *dev) { … } static int ir_mce_kbd_unregister(struct rc_dev *dev) { … } static const struct ir_raw_timings_manchester ir_mce_kbd_timings = …; /** * ir_mce_kbd_encode() - Encode a scancode as a stream of raw events * * @protocol: protocol to encode * @scancode: scancode to encode * @events: array of raw ir events to write into * @max: maximum size of @events * * Returns: The number of events written. * -ENOBUFS if there isn't enough space in the array to fit the * encoding. In this case all @max events will have been written. */ static int ir_mce_kbd_encode(enum rc_proto protocol, u32 scancode, struct ir_raw_event *events, unsigned int max) { … } static struct ir_raw_handler mce_kbd_handler = …; static int __init ir_mce_kbd_decode_init(void) { … } static void __exit ir_mce_kbd_decode_exit(void) { … } module_init(…) …; module_exit(ir_mce_kbd_decode_exit); MODULE_LICENSE(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …;
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