Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /* ir-mce_kbd-decoder.c - A decoder for the RC6-ish keyboard/mouse IR protocol
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * used by the Microsoft Remote Keyboard for Windows Media Center Edition,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * referred to by Microsoft's Windows Media Center remote specification docs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * as "an internal protocol called MCIR-2".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * Copyright (C) 2011 by Jarod Wilson <jarod@redhat.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include "rc-core-priv.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14)  * This decoder currently supports:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15)  * - MCIR-2 29-bit IR signals used for mouse movement and buttons
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16)  * - MCIR-2 32-bit IR signals used for standard keyboard keys
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18)  * The media keys on the keyboard send RC-6 signals that are indistinguishable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19)  * from the keys of the same name on the stock MCE remote, and will be handled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20)  * by the standard RC-6 decoder, and be made available to the system via the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21)  * input device for the remote, rather than the keyboard/mouse one.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #define MCIR2_UNIT		333	/* us */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #define MCIR2_HEADER_NBITS	5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #define MCIR2_MOUSE_NBITS	29
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #define MCIR2_KEYBOARD_NBITS	32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #define MCIR2_PREFIX_PULSE	(8 * MCIR2_UNIT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #define MCIR2_PREFIX_SPACE	(1 * MCIR2_UNIT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #define MCIR2_MAX_LEN		(3 * MCIR2_UNIT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #define MCIR2_BIT_START		(1 * MCIR2_UNIT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #define MCIR2_BIT_END		(1 * MCIR2_UNIT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #define MCIR2_BIT_0		(1 * MCIR2_UNIT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #define MCIR2_BIT_SET		(2 * MCIR2_UNIT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #define MCIR2_MODE_MASK		0xf	/* for the header bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #define MCIR2_KEYBOARD_HEADER	0x4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #define MCIR2_MOUSE_HEADER	0x1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) #define MCIR2_MASK_KEYS_START	0xe0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) enum mce_kbd_mode {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	MCIR2_MODE_KEYBOARD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	MCIR2_MODE_MOUSE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	MCIR2_MODE_UNKNOWN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) enum mce_kbd_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	STATE_INACTIVE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	STATE_HEADER_BIT_START,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	STATE_HEADER_BIT_END,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	STATE_BODY_BIT_START,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	STATE_BODY_BIT_END,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	STATE_FINISHED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) static unsigned char kbd_keycodes[256] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_A,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	KEY_B,		KEY_C,		KEY_D,		KEY_E,		KEY_F,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	KEY_G,		KEY_H,		KEY_I,		KEY_J,		KEY_K,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	KEY_L,		KEY_M,		KEY_N,		KEY_O,		KEY_P,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	KEY_Q,		KEY_R,		KEY_S,		KEY_T,		KEY_U,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	KEY_V,		KEY_W,		KEY_X,		KEY_Y,		KEY_Z,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	KEY_1,		KEY_2,		KEY_3,		KEY_4,		KEY_5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	KEY_6,		KEY_7,		KEY_8,		KEY_9,		KEY_0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	KEY_ENTER,	KEY_ESC,	KEY_BACKSPACE,	KEY_TAB,	KEY_SPACE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	KEY_MINUS,	KEY_EQUAL,	KEY_LEFTBRACE,	KEY_RIGHTBRACE,	KEY_BACKSLASH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	KEY_BACKSLASH,	KEY_SEMICOLON,	KEY_APOSTROPHE,	KEY_GRAVE,	KEY_COMMA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	KEY_DOT,	KEY_SLASH,	KEY_CAPSLOCK,	KEY_F1,		KEY_F2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	KEY_F3,		KEY_F4,		KEY_F5,		KEY_F6,		KEY_F7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	KEY_F8,		KEY_F9,		KEY_F10,	KEY_F11,	KEY_F12,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	KEY_SYSRQ,	KEY_SCROLLLOCK,	KEY_PAUSE,	KEY_INSERT,	KEY_HOME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	KEY_PAGEUP,	KEY_DELETE,	KEY_END,	KEY_PAGEDOWN,	KEY_RIGHT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	KEY_LEFT,	KEY_DOWN,	KEY_UP,		KEY_NUMLOCK,	KEY_KPSLASH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	KEY_KPASTERISK,	KEY_KPMINUS,	KEY_KPPLUS,	KEY_KPENTER,	KEY_KP1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	KEY_KP2,	KEY_KP3,	KEY_KP4,	KEY_KP5,	KEY_KP6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	KEY_KP7,	KEY_KP8,	KEY_KP9,	KEY_KP0,	KEY_KPDOT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	KEY_102ND,	KEY_COMPOSE,	KEY_POWER,	KEY_KPEQUAL,	KEY_F13,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	KEY_F14,	KEY_F15,	KEY_F16,	KEY_F17,	KEY_F18,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	KEY_F19,	KEY_F20,	KEY_F21,	KEY_F22,	KEY_F23,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	KEY_F24,	KEY_OPEN,	KEY_HELP,	KEY_PROPS,	KEY_FRONT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	KEY_STOP,	KEY_AGAIN,	KEY_UNDO,	KEY_CUT,	KEY_COPY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	KEY_PASTE,	KEY_FIND,	KEY_MUTE,	KEY_VOLUMEUP,	KEY_VOLUMEDOWN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_KPCOMMA,	KEY_RESERVED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	KEY_RO,		KEY_KATAKANAHIRAGANA, KEY_YEN,	KEY_HENKAN,	KEY_MUHENKAN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	KEY_KPJPCOMMA,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_HANGUEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	KEY_HANJA,	KEY_KATAKANA,	KEY_HIRAGANA,	KEY_ZENKAKUHANKAKU, KEY_RESERVED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,	KEY_LEFTCTRL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	KEY_LEFTSHIFT,	KEY_LEFTALT,	KEY_LEFTMETA,	KEY_RIGHTCTRL,	KEY_RIGHTSHIFT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	KEY_RIGHTALT,	KEY_RIGHTMETA,	KEY_PLAYPAUSE,	KEY_STOPCD,	KEY_PREVIOUSSONG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	KEY_NEXTSONG,	KEY_EJECTCD,	KEY_VOLUMEUP,	KEY_VOLUMEDOWN,	KEY_MUTE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	KEY_WWW,	KEY_BACK,	KEY_FORWARD,	KEY_STOP,	KEY_FIND,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	KEY_SCROLLUP,	KEY_SCROLLDOWN,	KEY_EDIT,	KEY_SLEEP,	KEY_COFFEE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	KEY_REFRESH,	KEY_CALC,	KEY_RESERVED,	KEY_RESERVED,	KEY_RESERVED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	KEY_RESERVED
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) static void mce_kbd_rx_timeout(struct timer_list *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	struct ir_raw_event_ctrl *raw = from_timer(raw, t, mce_kbd.rx_timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	unsigned char maskcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	dev_dbg(&raw->dev->dev, "timer callback clearing all keys\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	spin_lock_irqsave(&raw->mce_kbd.keylock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	if (time_is_before_eq_jiffies(raw->mce_kbd.rx_timeout.expires)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 		for (i = 0; i < 7; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 			maskcode = kbd_keycodes[MCIR2_MASK_KEYS_START + i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 			input_report_key(raw->dev->input_dev, maskcode, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 		for (i = 0; i < MCIR2_MASK_KEYS_START; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 			input_report_key(raw->dev->input_dev, kbd_keycodes[i],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 					 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 		input_sync(raw->dev->input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	spin_unlock_irqrestore(&raw->mce_kbd.keylock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) static enum mce_kbd_mode mce_kbd_mode(struct mce_kbd_dec *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	switch (data->header & MCIR2_MODE_MASK) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	case MCIR2_KEYBOARD_HEADER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 		return MCIR2_MODE_KEYBOARD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	case MCIR2_MOUSE_HEADER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 		return MCIR2_MODE_MOUSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 		return MCIR2_MODE_UNKNOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) static void ir_mce_kbd_process_keyboard_data(struct rc_dev *dev, u32 scancode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	u8 keydata1  = (scancode >> 8) & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	u8 keydata2  = (scancode >> 16) & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	u8 shiftmask = scancode & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	unsigned char maskcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	int i, keystate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	dev_dbg(&dev->dev, "keyboard: keydata2 = 0x%02x, keydata1 = 0x%02x, shiftmask = 0x%02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 		keydata2, keydata1, shiftmask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	for (i = 0; i < 7; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 		maskcode = kbd_keycodes[MCIR2_MASK_KEYS_START + i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		if (shiftmask & (1 << i))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 			keystate = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 			keystate = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 		input_report_key(dev->input_dev, maskcode, keystate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	if (keydata1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 		input_report_key(dev->input_dev, kbd_keycodes[keydata1], 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	if (keydata2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 		input_report_key(dev->input_dev, kbd_keycodes[keydata2], 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	if (!keydata1 && !keydata2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		for (i = 0; i < MCIR2_MASK_KEYS_START; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 			input_report_key(dev->input_dev, kbd_keycodes[i], 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) static void ir_mce_kbd_process_mouse_data(struct rc_dev *dev, u32 scancode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	/* raw mouse coordinates */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	u8 xdata = (scancode >> 7) & 0x7f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	u8 ydata = (scancode >> 14) & 0x7f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	int x, y;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	/* mouse buttons */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	bool right = scancode & 0x40;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	bool left  = scancode & 0x20;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	if (xdata & 0x40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 		x = -((~xdata & 0x7f) + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 		x = xdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	if (ydata & 0x40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 		y = -((~ydata & 0x7f) + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 		y = ydata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	dev_dbg(&dev->dev, "mouse: x = %d, y = %d, btns = %s%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 		x, y, left ? "L" : "", right ? "R" : "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	input_report_rel(dev->input_dev, REL_X, x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	input_report_rel(dev->input_dev, REL_Y, y);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	input_report_key(dev->input_dev, BTN_LEFT, left);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	input_report_key(dev->input_dev, BTN_RIGHT, right);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)  * ir_mce_kbd_decode() - Decode one mce_kbd pulse or space
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)  * @dev:	the struct rc_dev descriptor of the device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)  * @ev:		the struct ir_raw_event descriptor of the pulse/space
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)  * This function returns -EINVAL if the pulse violates the state machine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) static int ir_mce_kbd_decode(struct rc_dev *dev, struct ir_raw_event ev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	struct mce_kbd_dec *data = &dev->raw->mce_kbd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	u32 scancode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	unsigned long delay;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	struct lirc_scancode lsc = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	if (!is_timing_event(ev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 		if (ev.reset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 			data->state = STATE_INACTIVE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	if (!geq_margin(ev.duration, MCIR2_UNIT, MCIR2_UNIT / 2))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) again:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	dev_dbg(&dev->dev, "started at state %i (%uus %s)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 		data->state, ev.duration, TO_STR(ev.pulse));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	if (!geq_margin(ev.duration, MCIR2_UNIT, MCIR2_UNIT / 2))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	switch (data->state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	case STATE_INACTIVE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 		if (!ev.pulse)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 		/* Note: larger margin on first pulse since each MCIR2_UNIT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 		   is quite short and some hardware takes some time to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 		   adjust to the signal */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 		if (!eq_margin(ev.duration, MCIR2_PREFIX_PULSE, MCIR2_UNIT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 		data->state = STATE_HEADER_BIT_START;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 		data->count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 		data->header = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	case STATE_HEADER_BIT_START:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 		if (geq_margin(ev.duration, MCIR2_MAX_LEN, MCIR2_UNIT / 2))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 		data->header <<= 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 		if (ev.pulse)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 			data->header |= 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 		data->count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 		data->state = STATE_HEADER_BIT_END;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	case STATE_HEADER_BIT_END:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 		decrease_duration(&ev, MCIR2_BIT_END);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 		if (data->count != MCIR2_HEADER_NBITS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 			data->state = STATE_HEADER_BIT_START;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 			goto again;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 		switch (mce_kbd_mode(data)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 		case MCIR2_MODE_KEYBOARD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 			data->wanted_bits = MCIR2_KEYBOARD_NBITS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 		case MCIR2_MODE_MOUSE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 			data->wanted_bits = MCIR2_MOUSE_NBITS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 		default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 			dev_dbg(&dev->dev, "not keyboard or mouse data\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 			goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 		data->count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 		data->body = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 		data->state = STATE_BODY_BIT_START;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 		goto again;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	case STATE_BODY_BIT_START:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 		if (geq_margin(ev.duration, MCIR2_MAX_LEN, MCIR2_UNIT / 2))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 		data->body <<= 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 		if (ev.pulse)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 			data->body |= 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 		data->count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 		data->state = STATE_BODY_BIT_END;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 	case STATE_BODY_BIT_END:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 		if (data->count == data->wanted_bits)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 			data->state = STATE_FINISHED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 			data->state = STATE_BODY_BIT_START;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 		decrease_duration(&ev, MCIR2_BIT_END);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 		goto again;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 	case STATE_FINISHED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 		if (ev.pulse)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 		switch (data->wanted_bits) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 		case MCIR2_KEYBOARD_NBITS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 			scancode = data->body & 0xffffff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 			dev_dbg(&dev->dev, "keyboard data 0x%08x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 				data->body);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 			spin_lock(&data->keylock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 			if (scancode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 				delay = usecs_to_jiffies(dev->timeout) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 					msecs_to_jiffies(100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 				mod_timer(&data->rx_timeout, jiffies + delay);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 			} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 				del_timer(&data->rx_timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 			/* Pass data to keyboard buffer parser */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 			ir_mce_kbd_process_keyboard_data(dev, scancode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 			spin_unlock(&data->keylock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 			lsc.rc_proto = RC_PROTO_MCIR2_KBD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 		case MCIR2_MOUSE_NBITS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 			scancode = data->body & 0x1fffff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 			dev_dbg(&dev->dev, "mouse data 0x%06x\n", scancode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 			/* Pass data to mouse buffer parser */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 			ir_mce_kbd_process_mouse_data(dev, scancode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 			lsc.rc_proto = RC_PROTO_MCIR2_MSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 		default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 			dev_dbg(&dev->dev, "not keyboard or mouse data\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 			goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 		lsc.scancode = scancode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 		lirc_scancode_event(dev, &lsc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 		data->state = STATE_INACTIVE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 		input_event(dev->input_dev, EV_MSC, MSC_SCAN, scancode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 		input_sync(dev->input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 	dev_dbg(&dev->dev, "failed at state %i (%uus %s)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 		data->state, ev.duration, TO_STR(ev.pulse));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 	data->state = STATE_INACTIVE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 	return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) static int ir_mce_kbd_register(struct rc_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 	struct mce_kbd_dec *mce_kbd = &dev->raw->mce_kbd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 	timer_setup(&mce_kbd->rx_timeout, mce_kbd_rx_timeout, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 	spin_lock_init(&mce_kbd->keylock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) static int ir_mce_kbd_unregister(struct rc_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 	struct mce_kbd_dec *mce_kbd = &dev->raw->mce_kbd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 	del_timer_sync(&mce_kbd->rx_timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) static const struct ir_raw_timings_manchester ir_mce_kbd_timings = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 	.leader_pulse	= MCIR2_PREFIX_PULSE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) 	.invert		= 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 	.clock		= MCIR2_UNIT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 	.trailer_space	= MCIR2_UNIT * 10,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388)  * ir_mce_kbd_encode() - Encode a scancode as a stream of raw events
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390)  * @protocol:   protocol to encode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391)  * @scancode:   scancode to encode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)  * @events:     array of raw ir events to write into
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)  * @max:        maximum size of @events
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395)  * Returns:     The number of events written.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)  *              -ENOBUFS if there isn't enough space in the array to fit the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)  *              encoding. In this case all @max events will have been written.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) static int ir_mce_kbd_encode(enum rc_proto protocol, u32 scancode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) 			     struct ir_raw_event *events, unsigned int max)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) 	struct ir_raw_event *e = events;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) 	int len, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) 	u64 raw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) 	if (protocol == RC_PROTO_MCIR2_KBD) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) 		raw = scancode |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) 		      ((u64)MCIR2_KEYBOARD_HEADER << MCIR2_KEYBOARD_NBITS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) 		len = MCIR2_KEYBOARD_NBITS + MCIR2_HEADER_NBITS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) 		raw = scancode |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) 		      ((u64)MCIR2_MOUSE_HEADER << MCIR2_MOUSE_NBITS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) 		len = MCIR2_MOUSE_NBITS + MCIR2_HEADER_NBITS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) 	ret = ir_raw_gen_manchester(&e, max, &ir_mce_kbd_timings, len, raw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) 	if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) 	return e - events;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) static struct ir_raw_handler mce_kbd_handler = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) 	.protocols	= RC_PROTO_BIT_MCIR2_KBD | RC_PROTO_BIT_MCIR2_MSE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) 	.decode		= ir_mce_kbd_decode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) 	.encode		= ir_mce_kbd_encode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) 	.raw_register	= ir_mce_kbd_register,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) 	.raw_unregister	= ir_mce_kbd_unregister,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) 	.carrier	= 36000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) 	.min_timeout	= MCIR2_MAX_LEN + MCIR2_UNIT / 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) static int __init ir_mce_kbd_decode_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) 	ir_raw_handler_register(&mce_kbd_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) 	printk(KERN_INFO "IR MCE Keyboard/mouse protocol handler initialized\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) static void __exit ir_mce_kbd_decode_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) 	ir_raw_handler_unregister(&mce_kbd_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) module_init(ir_mce_kbd_decode_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) module_exit(ir_mce_kbd_decode_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) MODULE_AUTHOR("Jarod Wilson <jarod@redhat.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) MODULE_DESCRIPTION("MCE Keyboard/mouse IR protocol decoder");