Remove custom ISSI lighting code (#22073)

* Remove CU75 custom lighting

* Remove LFK78 custom lighting

* Remove LFK87 custom lighting

* Remove LFKPad custom lighting

* Remove Mini1800 custom lighting

* Remove SMK65 custom lighting

* Remove LFK65-HS custom lighting

* Remove LFKeyboards custom lighting

* Remove Meira custom lighting

70 files changed, 11 insertions, 1943 deletions

diff --git a/keyboards/lfkeyboards/TWIlib.c b/keyboards/lfkeyboards/TWIlib.c
deleted file mode 100644
index 0d52322c64..0000000000
--- a/keyboards/lfkeyboards/TWIlib.c
+++ /dev/null
@@ -1,296 +0,0 @@
-/*
- * TWIlib.c
- *
- *  Created: 6/01/2014 10:41:33 PM
- *  Author: Chris Herring
- */
-
-#include <avr/io.h>
-#include <avr/interrupt.h>
-#include "TWIlib.h"
-#include <util/delay.h>
-#include "print.h"
-
-// Global transmit buffer
-volatile uint8_t *TWITransmitBuffer;
-// Global receive buffer
-volatile uint8_t TWIReceiveBuffer[RXMAXBUFLEN];
-// Buffer indexes
-volatile int TXBuffIndex; // Index of the transmit buffer. Is volatile, can change at any time.
-int RXBuffIndex; // Current index in the receive buffer
-// Buffer lengths
-int TXBuffLen; // The total length of the transmit buffer
-int RXBuffLen; // The total number of bytes to read (should be less than RXMAXBUFFLEN)
-
-TWIInfoStruct TWIInfo;
-
-void TWIInit(void)
-{
-	TWIInfo.mode = Ready;
-	TWIInfo.errorCode = 0xFF;
-	TWIInfo.repStart = 0;
-	// Set pre-scalers (no pre-scaling)
-	TWSR = 0;
-	// Set bit rate
-	TWBR = ((F_CPU / TWI_FREQ) - 16) / 2;
-	// Enable TWI and interrupt
-	TWCR = (1 << TWIE) | (1 << TWEN);
-}
-
-uint8_t isTWIReady(void)
-{
-	if ( (TWIInfo.mode == Ready) | (TWIInfo.mode == RepeatedStartSent) )
-	{
-		return 1;
-	}
-	else
-	{
-		if(TWIInfo.mode == Initializing){
-			switch(TWIInfo.errorCode){
-		        case TWI_SUCCESS:
-		        case TWI_NO_RELEVANT_INFO:
-		        	break;
-				case TWI_LOST_ARBIT:
-				case TWI_MT_DATA_NACK:
-					// Some kind of I2C error, reset and re-init
-		        	xprintf("I2C init error: %d\n", TWIInfo.errorCode);
-			        TWCR = (1 << TWINT)|(1 << TWSTO);
-		        	TWIInit();
-		        	break;
-		        default:
-		        	xprintf("Other i2c init error: %d\n", TWIInfo.errorCode);
-			}
-		}
-		return 0;
-	}
-}
-
-
-void TWITransmitData(void *const TXdata, uint8_t dataLen, uint8_t repStart, uint8_t blocking)
-{
-	// Wait until ready
-	while (!isTWIReady()) {_delay_us(1);}
-	// Reset the I2C stuff
-	TWCR = (1 << TWINT)|(1 << TWSTO);
-	TWIInit();
-	// Set repeated start mode
-	TWIInfo.repStart = repStart;
-	// Copy transmit info to global variables
-	TWITransmitBuffer = (uint8_t *)TXdata;
-	TXBuffLen = dataLen;
-	TXBuffIndex = 0;
-
-	// If a repeated start has been sent, then devices are already listening for an address
-	// and another start does not need to be sent.
-	if (TWIInfo.mode == RepeatedStartSent)
-	{
-		TWIInfo.mode = Initializing;
-		TWDR = TWITransmitBuffer[TXBuffIndex++]; // Load data to transmit buffer
-		TWISendTransmit(); // Send the data
-	}
-	else // Otherwise, just send the normal start signal to begin transmission.
-	{
-		TWIInfo.mode = Initializing;
-		TWISendStart();
-	}
-	if(blocking){
-		// Wait until ready
-		while (!isTWIReady()){_delay_us(1);}
-	}
-}
-
-
-// uint8_t TWITransmitData(void *const TXdata, uint8_t dataLen, uint8_t repStart)
-// {
-// 	if (dataLen <= TXMAXBUFLEN)
-// 	{
-// 		// Wait until ready
-// 		while (!isTWIReady()) {_delay_us(1);}
-// 		// Set repeated start mode
-// 		TWIInfo.repStart = repStart;
-// 		// Copy data into the transmit buffer
-// 		uint8_t *data = (uint8_t *)TXdata;
-// 		for (int i = 0; i < dataLen; i++)
-// 		{
-// 			TWITransmitBuffer[i] = data[i];
-// 		}
-// 		// Copy transmit info to global variables
-// 		TXBuffLen = dataLen;
-// 		TXBuffIndex = 0;
-
-// 		// If a repeated start has been sent, then devices are already listening for an address
-// 		// and another start does not need to be sent.
-// 		if (TWIInfo.mode == RepeatedStartSent)
-// 		{
-// 			TWIInfo.mode = Initializing;
-// 			TWDR = TWITransmitBuffer[TXBuffIndex++]; // Load data to transmit buffer
-// 			TWISendTransmit(); // Send the data
-// 		}
-// 		else // Otherwise, just send the normal start signal to begin transmission.
-// 		{
-// 			TWIInfo.mode = Initializing;
-// 			TWISendStart();
-// 		}
-
-// 	}
-// 	else
-// 	{
-// 		return 1; // return an error if data length is longer than buffer
-// 	}
-// 	return 0;
-// }
-
-uint8_t TWIReadData(uint8_t TWIaddr, uint8_t bytesToRead, uint8_t repStart)
-{
-	// Check if number of bytes to read can fit in the RXbuffer
-	if (bytesToRead < RXMAXBUFLEN)
-	{
-		// Reset buffer index and set RXBuffLen to the number of bytes to read
-		RXBuffIndex = 0;
-		RXBuffLen = bytesToRead;
-		// Create the one value array for the address to be transmitted
-		uint8_t TXdata[1];
-		// Shift the address and AND a 1 into the read write bit (set to write mode)
-		TXdata[0] = (TWIaddr << 1) | 0x01;
-		// Use the TWITransmitData function to initialize the transfer and address the slave
-		TWITransmitData(TXdata, 1, repStart, 0);
-	}
-	else
-	{
-		return 0;
-	}
-	return 1;
-}
-
-ISR (TWI_vect)
-{
-	switch (TWI_STATUS)
-	{
-		// ----\/ ---- MASTER TRANSMITTER OR WRITING ADDRESS ----\/ ----  //
-		case TWI_MT_SLAW_ACK: // SLA+W transmitted and ACK received
-		// Set mode to Master Transmitter
-		TWIInfo.mode = MasterTransmitter;
-		case TWI_START_SENT: // Start condition has been transmitted
-		case TWI_MT_DATA_ACK: // Data byte has been transmitted, ACK received
-			if (TXBuffIndex < TXBuffLen) // If there is more data to send
-			{
-				TWDR = TWITransmitBuffer[TXBuffIndex++]; // Load data to transmit buffer
-				TWIInfo.errorCode = TWI_NO_RELEVANT_INFO;
-				TWISendTransmit(); // Send the data
-			}
-			// This transmission is complete however do not release bus yet
-			else if (TWIInfo.repStart)
-			{
-				TWIInfo.errorCode = 0xFF;
-				TWISendStart();
-			}
-			// All transmissions are complete, exit
-			else
-			{
-				TWIInfo.mode = Ready;
-				TWIInfo.errorCode = 0xFF;
-				TWISendStop();
-			}
-			break;
-
-		// ----\/ ---- MASTER RECEIVER ----\/ ----  //
-
-		case TWI_MR_SLAR_ACK: // SLA+R has been transmitted, ACK has been received
-			// Switch to Master Receiver mode
-			TWIInfo.mode = MasterReceiver;
-			// If there is more than one byte to be read, receive data byte and return an ACK
-			if (RXBuffIndex < RXBuffLen-1)
-			{
-				TWIInfo.errorCode = TWI_NO_RELEVANT_INFO;
-				TWISendACK();
-			}
-			// Otherwise when a data byte (the only data byte) is received, return NACK
-			else
-			{
-				TWIInfo.errorCode = TWI_NO_RELEVANT_INFO;
-				TWISendNACK();
-			}
-			break;
-
-		case TWI_MR_DATA_ACK: // Data has been received, ACK has been transmitted.
-
-			/// -- HANDLE DATA BYTE --- ///
-			TWIReceiveBuffer[RXBuffIndex++] = TWDR;
-			// If there is more than one byte to be read, receive data byte and return an ACK
-			if (RXBuffIndex < RXBuffLen-1)
-			{
-				TWIInfo.errorCode = TWI_NO_RELEVANT_INFO;
-				TWISendACK();
-			}
-			// Otherwise when a data byte (the only data byte) is received, return NACK
-			else
-			{
-				TWIInfo.errorCode = TWI_NO_RELEVANT_INFO;
-				TWISendNACK();
-			}
-			break;
-
-		case TWI_MR_DATA_NACK: // Data byte has been received, NACK has been transmitted. End of transmission.
-
-			/// -- HANDLE DATA BYTE --- ///
-			TWIReceiveBuffer[RXBuffIndex++] = TWDR;
-			// This transmission is complete however do not release bus yet
-			if (TWIInfo.repStart)
-			{
-				TWIInfo.errorCode = 0xFF;
-				TWISendStart();
-			}
-			// All transmissions are complete, exit
-			else
-			{
-				TWIInfo.mode = Ready;
-				TWIInfo.errorCode = 0xFF;
-				TWISendStop();
-			}
-			break;
-
-		// ----\/ ---- MT and MR common ----\/ ---- //
-
-		case TWI_MR_SLAR_NACK: // SLA+R transmitted, NACK received
-		case TWI_MT_SLAW_NACK: // SLA+W transmitted, NACK received
-		case TWI_MT_DATA_NACK: // Data byte has been transmitted, NACK received
-		case TWI_LOST_ARBIT: // Arbitration has been lost
-			// Return error and send stop and set mode to ready
-			if (TWIInfo.repStart)
-			{
-				TWIInfo.errorCode = TWI_STATUS;
-				TWISendStart();
-			}
-			// All transmissions are complete, exit
-			else
-			{
-				TWIInfo.mode = Ready;
-				TWIInfo.errorCode = TWI_STATUS;
-				TWISendStop();
-			}
-			break;
-		case TWI_REP_START_SENT: // Repeated start has been transmitted
-			// Set the mode but DO NOT clear TWINT as the next data is not yet ready
-			TWIInfo.mode = RepeatedStartSent;
-			break;
-
-		// ----\/ ---- SLAVE RECEIVER ----\/ ----  //
-
-		// TODO  IMPLEMENT SLAVE RECEIVER FUNCTIONALITY
-
-		// ----\/ ---- SLAVE TRANSMITTER ----\/ ----  //
-
-		// TODO  IMPLEMENT SLAVE TRANSMITTER FUNCTIONALITY
-
-		// ----\/ ---- MISCELLANEOUS STATES ----\/ ----  //
-		case TWI_NO_RELEVANT_INFO: // It is not really possible to get into this ISR on this condition
-								   // Rather, it is there to be manually set between operations
-			break;
-		case TWI_ILLEGAL_START_STOP: // Illegal START/STOP, abort and return error
-			TWIInfo.errorCode = TWI_ILLEGAL_START_STOP;
-			TWIInfo.mode = Ready;
-			TWISendStop();
-			break;
-	}
-
-}
diff --git a/keyboards/lfkeyboards/TWIlib.h b/keyboards/lfkeyboards/TWIlib.h
deleted file mode 100644
index 8ba261c6e5..0000000000
--- a/keyboards/lfkeyboards/TWIlib.h
+++ /dev/null
@@ -1,71 +0,0 @@
-/*
- * TWIlib.h
- *
- * Created: 6/01/2014 10:38:42 PM
- *  Author: Chris Herring
- */
-
-
-#ifndef TWILIB_H_
-#define TWILIB_H_
-// TWI bit rate
-#define TWI_FREQ 400000
-// Get TWI status
-#define TWI_STATUS	(TWSR & 0xF8)
-// Transmit buffer length
-#define TXMAXBUFLEN 20
-// Receive buffer length
-#define RXMAXBUFLEN 20
-
-typedef enum {
-	Ready,
-	Initializing,
-	RepeatedStartSent,
-	MasterTransmitter,
-	MasterReceiver,
-	SlaceTransmitter,
-	SlaveReciever
-	} TWIMode;
-
- typedef struct TWIInfoStruct{
-	TWIMode mode;
-	uint8_t errorCode;
-	uint8_t repStart;
-	}TWIInfoStruct;
-
-extern TWIInfoStruct TWIInfo;
-
-// TWI Status Codes
-#define TWI_START_SENT			0x08 // Start sent
-#define TWI_REP_START_SENT		0x10 // Repeated Start sent
-// Master Transmitter Mode
-#define TWI_MT_SLAW_ACK			0x18 // SLA+W sent and ACK received
-#define TWI_MT_SLAW_NACK		0x20 // SLA+W sent and NACK received
-#define TWI_MT_DATA_ACK			0x28 // DATA sent and ACK received
-#define TWI_MT_DATA_NACK		0x30 // DATA sent and NACK received
-// Master Receiver Mode
-#define TWI_MR_SLAR_ACK			0x40 // SLA+R sent, ACK received
-#define TWI_MR_SLAR_NACK		0x48 // SLA+R sent, NACK received
-#define TWI_MR_DATA_ACK			0x50 // Data received, ACK returned
-#define TWI_MR_DATA_NACK		0x58 // Data received, NACK returned
-
-// Miscellaneous States
-#define TWI_LOST_ARBIT			0x38 // Arbitration has been lost
-#define TWI_NO_RELEVANT_INFO	0xF8 // No relevant information available
-#define TWI_ILLEGAL_START_STOP	0x00 // Illegal START or STOP condition has been detected
-#define TWI_SUCCESS				0xFF // Successful transfer, this state is impossible from TWSR as bit2 is 0 and read only
-
-
-#define TWISendStart()		(TWCR = (1<<TWINT)|(1<<TWSTA)|(1<<TWEN)|(1<<TWIE)) // Send the START signal, enable interrupts and TWI, clear TWINT flag to resume transfer.
-#define TWISendStop()		(TWCR = (1<<TWINT)|(1<<TWSTO)|(1<<TWEN)|(1<<TWIE)) // Send the STOP signal, enable interrupts and TWI, clear TWINT flag.
-#define TWISendTransmit()	(TWCR = (1<<TWINT)|(1<<TWEN)|(1<<TWIE)) // Used to resume a transfer, clear TWINT and ensure that TWI and interrupts are enabled.
-#define TWISendACK()		(TWCR = (1<<TWINT)|(1<<TWEN)|(1<<TWIE)|(1<<TWEA)) // FOR MR mode. Resume a transfer, ensure that TWI and interrupts are enabled and respond with an ACK if the device is addressed as a slave or after it receives a byte.
-#define TWISendNACK()		(TWCR = (1<<TWINT)|(1<<TWEN)|(1<<TWIE)) // FOR MR mode. Resume a transfer, ensure that TWI and interrupts are enabled but DO NOT respond with an ACK if the device is addressed as a slave or after it receives a byte.
-
-// Function declarations
-void TWITransmitData(void *const TXdata, uint8_t dataLen, uint8_t repStart, uint8_t blocking);
-void TWIInit(void);
-uint8_t TWIReadData(uint8_t TWIaddr, uint8_t bytesToRead, uint8_t repStart);
-uint8_t isTWIReady(void);
-
-#endif // TWICOMMS_H_
\ No newline at end of file
diff --git a/keyboards/lfkeyboards/issi.c b/keyboards/lfkeyboards/issi.c
deleted file mode 100644
index e675a59868..0000000000
--- a/keyboards/lfkeyboards/issi.c
+++ /dev/null
@@ -1,244 +0,0 @@
-#ifdef ISSI_ENABLE
-
-#include <stdlib.h>
-#include <stdint.h>
-#include <util/delay.h>
-#include <avr/sfr_defs.h>
-#include <avr/io.h>
-#include <util/twi.h>
-#include "issi.h"
-#include "print.h"
-#include "TWIlib.h"
-
-#define ISSI_ADDR_DEFAULT 0xE8
-
-#define ISSI_REG_CONFIG 0x00
-#define ISSI_REG_CONFIG_PICTUREMODE 0x00
-#define ISSI_REG_CONFIG_AUTOPLAYMODE 0x08
-
-#define ISSI_CONF_PICTUREMODE 0x00
-#define ISSI_CONF_AUTOFRAMEMODE 0x04
-#define ISSI_CONF_AUDIOMODE 0x08
-
-#define ISSI_REG_PICTUREFRAME 0x01
-
-#define ISSI_REG_SHUTDOWN 0x0A
-#define ISSI_REG_AUDIOSYNC 0x06
-
-#define ISSI_COMMANDREGISTER 0xFD
-#define ISSI_BANK_FUNCTIONREG 0x0B // helpfully called 'page nine'
-uint8_t control[8][9] = {
-    {0, 0, 0, 0, 0, 0, 0, 0, 0}, {0, 0, 0, 0, 0, 0, 0, 0, 0},
-    {0, 0, 0, 0, 0, 0, 0, 0, 0}, {0, 0, 0, 0, 0, 0, 0, 0, 0},
-    {0, 0, 0, 0, 0, 0, 0, 0, 0}, {0, 0, 0, 0, 0, 0, 0, 0, 0},
-    {0, 0, 0, 0, 0, 0, 0, 0, 0}, {0, 0, 0, 0, 0, 0, 0, 0, 0},
-};
-ISSIDeviceStruct *issi_devices[4] = {0, 0, 0, 0};
-
-#ifndef cbi
-#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))
-#endif
-
-#ifndef sbi
-#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))
-#endif
-
-#define I2C_WRITE 0
-#define F_SCL 400000UL // SCL frequency
-#define Prescaler 1
-#define TWBR_val ((((F_CPU / F_SCL) / Prescaler) - 16 ) / 2)
-
-uint8_t i2c_start(uint8_t address)
-{
-    // reset TWI control register
-    TWCR = 0;
-    // transmit START condition
-    TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
-    // wait for end of transmission
-    while( !(TWCR & (1<<TWINT)) );
-
-    // check if the start condition was successfully transmitted
-    if((TWSR & 0xF8) != TW_START){ return 1; }
-
-    // load slave address into data register
-    TWDR = address;
-    // start transmission of address
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    // wait for end of transmission
-    while( !(TWCR & (1<<TWINT)) );
-
-    // check if the device has acknowledged the READ / WRITE mode
-    uint8_t twst = TW_STATUS & 0xF8;
-    if ( (twst != TW_MT_SLA_ACK) && (twst != TW_MR_SLA_ACK) ) return 1;
-
-    return 0;
-}
-
-uint8_t i2c_write(uint8_t data)
-{
-    // load data into data register
-    TWDR = data;
-    // start transmission of data
-    TWCR = (1 << TWINT) | (1 << TWEN);
-    // wait for end of transmission
-    while (!(TWCR & (1 << TWINT)))
-        ;
-
-    if ((TWSR & 0xF8) != TW_MT_DATA_ACK) {
-        return 1;
-    }
-    return 0;
-}
-
-uint8_t i2c_transmit(uint8_t address, uint8_t* data, uint16_t length)
-{
-    TWBR = (uint8_t)TWBR_val;
-    if (i2c_start(address | I2C_WRITE))
-        return 1;
-    for (uint16_t i = 0; i < length; i++) {
-        if (i2c_write(data[i]))
-            return 1;
-    }
-    // transmit STOP condition
-    TWCR = (1 << TWINT) | (1 << TWEN) | (1 << TWSTO);
-    return 0;
-}
-
-void setFrame(uint8_t device, uint8_t frame)
-{
-    static uint8_t current_frame = -1;
-    if(current_frame != frame){
-        uint8_t payload[] = {
-            ISSI_ADDR_DEFAULT | device << 1,
-            ISSI_COMMANDREGISTER,
-            frame
-        };
-        TWITransmitData(payload, sizeof(payload), 0, 1);
-    }
-    // static uint8_t current_frame = 0xFF;
-    // if(current_frame == frame){
-    //     // return;
-    // }
-    // uint8_t payload[2] = { ISSI_COMMANDREGISTER, frame };
-    // i2c_transmit(ISSI_ADDR_DEFAULT | device << 1, payload, 2);
-    // current_frame = frame;
-}
-
-void writeRegister8(uint8_t device, uint8_t frame, uint8_t reg, uint8_t data)
-{
-    // Set the frame
-    setFrame(device, frame);
-
-    // Write to the register
-    uint8_t payload[] = {
-        ISSI_ADDR_DEFAULT | device << 1,
-        reg,
-        data
-    };
-    TWITransmitData(payload, sizeof(payload), 0, 1);
-}
-
-void activateLED(uint8_t matrix, uint8_t cx, uint8_t cy, uint8_t pwm)
-{
-    uint8_t device_addr = (matrix & 0x06) >> 1;
-    ISSIDeviceStruct *device = issi_devices[device_addr];
-    if(device == 0){
-        return;
-    }
-    // xprintf("activeLED: %02X %02X %02X %02X\n", matrix, cy, cx, pwm);
-    uint8_t x = cx - 1;  // funciton takes 1 based counts, but we need 0...
-    uint8_t y = cy - 1;  // creating them once for less confusion
-    uint8_t control_reg = (y << 1) | (matrix & 0x01);
-    if(pwm == 0){
-        cbi(device->led_ctrl[control_reg], x);
-        cbi(device->led_blink_ctrl[control_reg], x);
-     }else{
-        sbi(device->led_ctrl[control_reg], x);
-        sbi(device->led_blink_ctrl[control_reg], x);
-    }
-    uint8_t pwm_reg = 0;
-    switch(matrix & 0x01){
-        case 0:
-            pwm_reg = 0x00;
-            break;
-        case 1:
-            pwm_reg = 0x08;
-            break;
-    }
-    pwm_reg += (y << 4) + x;
-    device->led_pwm[pwm_reg] = pwm;
-    device->led_dirty = 1;
-}
-
-void update_issi(uint8_t device_addr, uint8_t blocking)
-{
-    // This seems to take about 6ms
-    ISSIDeviceStruct *device = issi_devices[device_addr];
-    if(device != 0){
-        if(device->fn_dirty){
-            device->fn_dirty = 0;
-            setFrame(device_addr, ISSI_BANK_FUNCTIONREG);
-            TWITransmitData(&device->fn_device_addr, sizeof(device->fn_registers) + 2, 0, 1);
-        }
-        if(device->led_dirty){
-            device->led_dirty = 0;
-            setFrame(device_addr, 0);
-            TWITransmitData(&device->led_device_addr, 0xB6, 0, blocking);
-        }
-    }
-}
-
-void issi_init(void)
-{
-    TWIInit();
-    for(uint8_t device_addr = 0; device_addr < 4; device_addr++){
-        // If this device has been previously allocated, free it
-        if(issi_devices[device_addr] != 0){
-            free(issi_devices[device_addr]);
-        }
-        // Try to shutdown the device, if this fails skip this device
-        writeRegister8(device_addr, ISSI_BANK_FUNCTIONREG, ISSI_REG_SHUTDOWN, 0x00);
-        while (!isTWIReady()){_delay_us(1);}
-        if(TWIInfo.errorCode != 0xFF){
-            xprintf("ISSI init failed %d %02X %02X\n", device_addr, TWIInfo.mode, TWIInfo.errorCode);
-            continue;
-        }
-        // Allocate the device structure - calloc zeros it for us
-        ISSIDeviceStruct *device = (ISSIDeviceStruct *)calloc(sizeof(ISSIDeviceStruct) * 2, 1);
-        issi_devices[device_addr] = device;
-        device->fn_device_addr = ISSI_ADDR_DEFAULT | device_addr << 1;
-        device->fn_register_addr = 0;
-        device->led_device_addr = ISSI_ADDR_DEFAULT | device_addr << 1;
-        device->led_register_addr = 0;
-        // set dirty bits so that all of the buffered data is written out
-        device->fn_dirty = 1;
-        device->led_dirty = 1;
-        update_issi(device_addr, 1);
-        // Set the function register to picture mode
-        // device->fn_reg[ISSI_REG_CONFIG] = ISSI_REG_CONFIG_PICTUREMODE;
-        writeRegister8(device_addr, ISSI_BANK_FUNCTIONREG, ISSI_REG_SHUTDOWN, 0x01);
-    }
-
-    // Shutdown and set all registers to 0
-    // writeRegister8(device_addr, ISSI_BANK_FUNCTIONREG, ISSI_REG_SHUTDOWN, 0x00);
-    // for(uint8_t bank = 0; bank <= 7; bank++){
-    //     for (uint8_t reg = 0x00; reg <= 0xB3; reg++) {
-    //         writeRegister8(device_addr, bank, reg, 0x00);
-    //     }
-    // }
-    // for (uint8_t reg = 0; reg <= 0x0C; reg++) {
-    //     writeRegister8(device_addr, ISSI_BANK_FUNCTIONREG, reg, 0x00);
-    // }
-    // writeRegister8(device_addr, ISSI_BANK_FUNCTIONREG, ISSI_REG_CONFIG, ISSI_REG_CONFIG_PICTUREMODE);
-    // writeRegister8(device_addr, ISSI_BANK_FUNCTIONREG, ISSI_REG_SHUTDOWN, 0x01);
-    // picture mode
-    // writeRegister8(ISSI_BANK_FUNCTIONREG, 0x01, 0x01);
-
-    //Enable blink
-    // writeRegister8(ISSI_BANK_FUNCTIONREG, 0x05, 0x48B);
-
-    //Enable Breath
-
-}
-
-#endif
\ No newline at end of file
diff --git a/keyboards/lfkeyboards/issi.h b/keyboards/lfkeyboards/issi.h
deleted file mode 100644
index 74379ddbc8..0000000000
--- a/keyboards/lfkeyboards/issi.h
+++ /dev/null
@@ -1,39 +0,0 @@
-#pragma once
-
-#ifdef ISSI_ENABLE
-
-typedef struct ISSIDeviceStruct{
-    uint8_t fn_dirty;       // function registers need to be resent
-    uint8_t fn_device_addr;
-    uint8_t fn_register_addr;
-    uint8_t fn_registers[13];
-    uint8_t led_dirty;      // LED data has changed and needs to be resent
-    uint8_t led_device_addr;
-    uint8_t led_register_addr;
-    uint8_t led_ctrl[18];
-    uint8_t led_blink_ctrl[18];
-    uint8_t led_pwm[144];
-}ISSIDeviceStruct;
-
-extern ISSIDeviceStruct *issi_devices[];
-
-// Low level commands- 'device' is the 2-bit i2c id.
-void issi_init(void);
-void set_shutdown(uint8_t device, uint8_t shutdown);
-void writeRegister8(uint8_t device, uint8_t frame, uint8_t reg, uint8_t data);
-
-// Higher level, no device is given, but it is calculated from 'matrix'
-// Each device has 2 blocks, max of 4 devices:
-//  Device  |   Block   =   Matrix
-//    0           A           0
-//    0           B           1
-//    1           A           2
-//    1           B           3
-//    2           A           4
-//    2           B           5
-//    3           A           6
-//    3           B           7
-void activateLED(uint8_t matrix, uint8_t cx, uint8_t cy, uint8_t pwm);
-void update_issi(uint8_t device_addr, uint8_t blocking);
-
-#endif
diff --git a/keyboards/lfkeyboards/lfk65_hs/config.h b/keyboards/lfkeyboards/lfk65_hs/config.h
index 221eee1bd4..7bc78f68d6 100644
--- a/keyboards/lfkeyboards/lfk65_hs/config.h
+++ b/keyboards/lfkeyboards/lfk65_hs/config.h
@@ -1,7 +1,5 @@
 #pragma once
 
-#define BACKLIGHT_PWM_MAP {8, 16, 40, 55, 70, 128, 200, 255}
-
 /* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
 #define LOCKING_SUPPORT_ENABLE
 /* Locking resynchronize hack */
diff --git a/keyboards/lfkeyboards/lfk65_hs/info.json b/keyboards/lfkeyboards/lfk65_hs/info.json
index ca2e2c695b..0034fced4a 100644
--- a/keyboards/lfkeyboards/lfk65_hs/info.json
+++ b/keyboards/lfkeyboards/lfk65_hs/info.json
@@ -13,28 +13,6 @@
     "rows": ["B0", "B3", "B2", "B1", "F5"]
   },
   "diode_direction": "COL2ROW",
-  "backlight": {
-    "levels": 8
-  },
-  "rgblight": {
-    "hue_steps": 10,
-    "led_count": 20,
-    "animations": {
-      "breathing": true,
-      "rainbow_mood": true,
-      "rainbow_swirl": true,
-      "snake": true,
-      "knight": true,
-      "christmas": true,
-      "static_gradient": true,
-      "rgb_test": true,
-      "alternating": true,
-      "twinkle": true
-    }
-  },
-  "ws2812": {
-    "pin": "C7"
-  },
   "processor": "atmega32u4",
   "bootloader": "atmel-dfu",
   "layouts": {
diff --git a/keyboards/lfkeyboards/lfk65_hs/lfk65_hs.c b/keyboards/lfkeyboards/lfk65_hs/lfk65_hs.c
index 47ad655ddc..ee8d8b2e73 100644
--- a/keyboards/lfkeyboards/lfk65_hs/lfk65_hs.c
+++ b/keyboards/lfkeyboards/lfk65_hs/lfk65_hs.c
@@ -1,13 +1,10 @@
-#include <avr/sfr_defs.h>
-#include <avr/timer_avr.h>
-#include <avr/wdt.h>
 #include "lfk65_hs.h"
+#include <avr/wdt.h>
 
 bool process_record_kb(uint16_t keycode, keyrecord_t* record)
 {
     if (keycode == QK_BOOT) {
         reset_keyboard_kb();
-    } else {
     }
     return process_record_user(keycode, record);
 }
diff --git a/keyboards/lfkeyboards/lfk65_hs/lfk65_hs.h b/keyboards/lfkeyboards/lfk65_hs/lfk65_hs.h
index 2be617b404..90031022d3 100644
--- a/keyboards/lfkeyboards/lfk65_hs/lfk65_hs.h
+++ b/keyboards/lfkeyboards/lfk65_hs/lfk65_hs.h
@@ -1,8 +1,5 @@
 #pragma once
 
 #include "quantum.h"
-#include "matrix.h"
-#include <avr/sfr_defs.h>
-#include <stdint.h>
 
 void reset_keyboard_kb(void);
diff --git a/keyboards/lfkeyboards/lfk65_hs/rules.mk b/keyboards/lfkeyboards/lfk65_hs/rules.mk
index 5589209fdd..e69de29bb2 100644
--- a/keyboards/lfkeyboards/lfk65_hs/rules.mk
+++ b/keyboards/lfkeyboards/lfk65_hs/rules.mk
@@ -1,2 +0,0 @@
-# Extra source files for IS3731 lighting
-SRC = TWIlib.c issi.c lighting.c
diff --git a/keyboards/lfkeyboards/lfk78/config.h b/keyboards/lfkeyboards/lfk78/config.h
index 89d9c4b243..99c3904213 100644
--- a/keyboards/lfkeyboards/lfk78/config.h
+++ b/keyboards/lfkeyboards/lfk78/config.h
@@ -17,8 +17,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
-#define BACKLIGHT_PWM_MAP { 8, 16, 40, 55, 70, 128, 200, 255 }
-
 #define AUDIO_PIN C6
 #define AUDIO_VOICES
 
diff --git a/keyboards/lfkeyboards/lfk78/keymaps/ca178858/keymap.c b/keyboards/lfkeyboards/lfk78/keymaps/ca178858/keymap.c
index f4d1e010ee..80e267e458 100644
--- a/keyboards/lfkeyboards/lfk78/keymaps/ca178858/keymap.c
+++ b/keyboards/lfkeyboards/lfk78/keymaps/ca178858/keymap.c
@@ -15,23 +15,6 @@ enum {
 
 bool spam_space = false;
 
-// {0x00000000, 0xFFFFFFFF, {0x0000, 0x0FFF, 0x0000}}, // base layer - green
-// {0x00000008, 0xFFFFFFF8, {0x07FF, 0x07FF, 0x0000}}, // CSGO layer - orange
-// {0x00000010, 0xFFFFFFF0, {0x0000, 0x0000, 0x0FFF}}, // function layer - blue
-// {0x00000020, 0xFFFFFFE0, {0x0FFF, 0x0000, 0x0FFF}}, // settings layer - magenta
-// {0xFFFFFFFF, 0xFFFFFFFF, {0x0FFF, 0x0FFF, 0x0FFF}}, // unknown layer - REQUIRED - white
-
-// Colors of the layer indicator LED
-// This list needs to define layer 0xFFFFFFFF, it is the end of the list, and the unknown layer
-const Layer_Info layer_info[] = {
-    // Layer     Mask           Red     Green   Blue
-    {0x00000000, 0xFFFFFFFF, {0x0000, 0x0FFF, 0x0000}}, // base layer - green
-    {0x00000002, 0xFFFFFFFE, {0x07FF, 0x07FF, 0x0000}}, // CSGO layer - orange
-    {0x00000004, 0xFFFFFFFC, {0x0000, 0x0000, 0x0FFF}}, // function layer - blue
-    {0x00000008, 0xFFFFFFE8, {0x0FFF, 0x0000, 0x0FFF}}, // settings layer - magenta
-    {0xFFFFFFFF, 0xFFFFFFFF, {0x0FFF, 0x0FFF, 0x0FFF}}, // unknown layer - REQUIRED - white
-};
-
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     /* Keymap BASE: (Base Layer) Default Layer
      * ,---------.  ,------------------------------------------------------------.  ,---------.
@@ -55,7 +38,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     ),
 
     [CS_GO] = LAYOUT_split_rshift(
-        _______, _______, QK_GESC,         _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,      _______,            F(0),        _______,
+        _______, _______, QK_GESC,         _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,      _______,            _______,     _______,
         _______, _______, _______,         _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,      _______,            _______,     _______,
         _______, _______, KC_LCTL,         _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,               _______,
         _______, _______, _______,         _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,                          _______,
diff --git a/keyboards/lfkeyboards/lfk78/keymaps/ca178858/rules.mk b/keyboards/lfkeyboards/lfk78/keymaps/ca178858/rules.mk
index 481ff1407b..732bfcfa8f 100644
--- a/keyboards/lfkeyboards/lfk78/keymaps/ca178858/rules.mk
+++ b/keyboards/lfkeyboards/lfk78/keymaps/ca178858/rules.mk
@@ -1,34 +1,3 @@
-BOOTMAGIC_ENABLE = no       # Enable Bootmagic Lite
-MOUSEKEY_ENABLE = no            # Mouse keys(+4700)
-EXTRAKEY_ENABLE = yes           # Audio control and System control(+450)
-CONSOLE_ENABLE = no             # Console for debug(+400)
-COMMAND_ENABLE = no             # Commands for debug and configuration
-NKRO_ENABLE = yes
-BACKLIGHT_ENABLE = yes          # Enable keyboard backlight functionality
-MIDI_ENABLE = no                # MIDI controls
-AUDIO_ENABLE = no              # Audio output on port C6
-UNICODE_ENABLE = no             # Unicode
-BLUETOOTH_ENABLE = no           # Disable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE = no           # Enable RGB underlight
-SLEEP_LED_ENABLE = yes
+AUDIO_ENABLE = no
 TAP_DANCE_ENABLE = yes
-
-ISSI_ENABLE = yes			# If the I2C pullup resistors aren't install this must be disabled
 WATCHDOG_ENABLE = yes		# Resets keyboard if matrix_scan isn't run every 250ms
-
-
-# # Set the LFK78 hardware version. This is defined in rules.mk, but can be overidden here if desired
-# #
-# # RevB - first public release, uses atmega32u4, has audio, ISSI matrix split between RGB and backlight
-# # RevC/D - at90usb1286, no audio, ISSI device 0 is backlight, 4 is RGB
-# #
-# # Set to B, C or D
-# LFK_REV = D
-
-# ifeq ($(LFK_REV), B)
-# 	MCU = atmega32u4
-# else
-# 	MCU = at90usb1286
-# endif
-# OPT_DEFS += -DLFK_REV_$(LFK_REV)
-# OPT_DEFS += -DUSB_PRODUCT=\"LFK_Rev$(LFK_REV)\"
diff --git a/keyboards/lfkeyboards/lfk78/keymaps/default/keymap.c b/keyboards/lfkeyboards/lfk78/keymaps/default/keymap.c
index 4b0a7e2196..d81ed91814 100644
--- a/keyboards/lfkeyboards/lfk78/keymaps/default/keymap.c
+++ b/keyboards/lfkeyboards/lfk78/keymaps/default/keymap.c
@@ -6,16 +6,6 @@ enum keymap_layout {
     SETTINGS
 };
 
-// Colors of the layer indicator LED
-// This list needs to define layer 0xFFFFFFFF, it is the end of the list, and the unknown layer
-const Layer_Info layer_info[] = {
-    // Layer      Mask          Red     Green   Blue
-    { 0x00000000, 0xFFFFFFFF, { 0x0000, 0x0FFF, 0x0000 } }, // base layer - green
-    { 0x00000002, 0xFFFFFFFE, { 0x0000, 0x0000, 0x0FFF } }, // function layer - blue
-    { 0x00000004, 0xFFFFFFFC, { 0x0FFF, 0x0000, 0x0FFF } }, // settings layer - magenta
-    { 0xFFFFFFFF, 0xFFFFFFFF, { 0x0FFF, 0x0FFF, 0x0FFF } }  // unknown layer - REQUIRED - white
-};
-
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     /* Keymap VANILLA: (Base Layer) Default Layer
      * ,---------.  ,------------------------------------------------------------.  ,---------.
diff --git a/keyboards/lfkeyboards/lfk78/keymaps/iso/keymap.c b/keyboards/lfkeyboards/lfk78/keymaps/iso/keymap.c
index 7db914604d..1f3ef6fc8e 100644
--- a/keyboards/lfkeyboards/lfk78/keymaps/iso/keymap.c
+++ b/keyboards/lfkeyboards/lfk78/keymaps/iso/keymap.c
@@ -6,16 +6,6 @@ enum keymap_layout {
     SETTINGS
 };
 
-// Colors of the layer indicator LED
-// This list needs to define layer 0xFFFFFFFF, it is the end of the list, and the unknown layer
-const Layer_Info layer_info[] = {
-    // Layer      Mask          Red     Green   Blue
-    { 0x00000000, 0xFFFFFFFF, { 0x0000, 0x0FFF, 0x0000 } }, // base layer - green
-    { 0x00000002, 0xFFFFFFFE, { 0x0000, 0x0000, 0x0FFF } }, // function layer - blue
-    { 0x00000004, 0xFFFFFFFC, { 0x0FFF, 0x0000, 0x0FFF } }, // settings layer - magenta
-    { 0xFFFFFFFF, 0xFFFFFFFF, { 0x0FFF, 0x0FFF, 0x0FFF } }  // unknown layer - REQUIRED - white
-};
-
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     /* Keymap VANILLA: (Base Layer) Default Layer
      * ,---------.  ,------------------------------------------------------------.  ,---------.
diff --git a/keyboards/lfkeyboards/lfk78/keymaps/split_bs_osx/keymap.c b/keyboards/lfkeyboards/lfk78/keymaps/split_bs_osx/keymap.c
index 00e292d61f..041c3cdfd0 100644
--- a/keyboards/lfkeyboards/lfk78/keymaps/split_bs_osx/keymap.c
+++ b/keyboards/lfkeyboards/lfk78/keymaps/split_bs_osx/keymap.c
@@ -6,16 +6,6 @@ enum keymap_layout {
     SETTINGS
 };
 
-// Colors of the layer indicator LED
-// This list needs to define layer 0xFFFFFFFF, it is the end of the list, and the unknown layer
-const Layer_Info layer_info[] = {
-    // Layer      Mask          Red     Green   Blue
-    { 0x00000000, 0xFFFFFFFF, { 0x0000, 0x0FFF, 0x0000 } }, // base layer - green
-    { 0x00000002, 0xFFFFFFFE, { 0x0000, 0x0000, 0x0FFF } }, // function layer - blue
-    { 0x00000004, 0xFFFFFFFC, { 0x0FFF, 0x0000, 0x0FFF } }, // settings layer - magenta
-    { 0xFFFFFFFF, 0xFFFFFFFF, { 0x0FFF, 0x0FFF, 0x0FFF } }  // unknown layer - REQUIRED - white
-};
-
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     /* Keymap VANILLA: (Base Layer) Default Layer
      * ,---------.  ,------------------------------------------------------------.  ,---------.
diff --git a/keyboards/lfkeyboards/lfk78/lfk78.c b/keyboards/lfkeyboards/lfk78/lfk78.c
index 3a10f51cb6..50f1505050 100644
--- a/keyboards/lfkeyboards/lfk78/lfk78.c
+++ b/keyboards/lfkeyboards/lfk78/lfk78.c
@@ -1,55 +1,19 @@
 #include "lfk78.h"
-
-#include <avr/timer_avr.h>
 #include <avr/wdt.h>
-#include "issi.h"
-#include "TWIlib.h"
-#include "lighting.h"
-
-#ifdef AUDIO_ENABLE
-#    include "audio.h"
-#endif
 
 uint16_t click_hz = CLICK_HZ;
 uint16_t click_time = CLICK_MS;
 uint8_t click_toggle = CLICK_ENABLED;
 
-__attribute__((weak))
-const Layer_Info layer_info[] = {
-    // Layer      Mask          Red     Green   Blue
-    { 0x00000000, 0xFFFFFFFF, { 0x0000, 0x0FFF, 0x0000 } }, // base layer - green
-    { 0x00000002, 0xFFFFFFFE, { 0x0000, 0x0000, 0x0FFF } }, // function layer - blue
-    { 0x00000004, 0xFFFFFFFC, { 0x0FFF, 0x0000, 0x0FFF } }, // settings layer - magenta
-    { 0xFFFFFFFF, 0xFFFFFFFF, { 0x0FFF, 0x0FFF, 0x0FFF } }  // unknown layer - REQUIRED - white
-};
-
 void matrix_init_kb(void) {
     matrix_init_user();
 
-    // Configure the Layer LED
-    // Set up 16 bit PWM: Fast PWM, mode 14, inverted
-    TCCR1A = _BV(COM1A1) | _BV(COM1A0) | _BV(COM1B1) | _BV(COM1B0) | _BV(COM1C1) | _BV(COM1C0) | _BV(WGM11);
-    TCCR1B = _BV(WGM13) | _BV(WGM12) | _BV(CS10);
-    ICR1 = 0xFFFF;
-    // PWM values - 0xFFFF = off, 0x0000 = max
-    OCR1A = 0x0FFF; // B5 - Red
-    OCR1B = 0x0000; // B6 - Green
-    OCR1C = 0x0000; // B7 - Blue
-    // Set as output
-    setPinOutput(B5);
-    setPinOutput(B6);
-    setPinOutput(B7);
-
 #ifndef AUDIO_ENABLE
     // If we're not using the audio pin, drive it low
     setPinOutput(C6);
     writePinLow(C6);
 #endif
 
-#ifdef ISSI_ENABLE
-    issi_init();
-#endif
-
 #ifdef WATCHDOG_ENABLE
     // This is done after turning the layer LED red, if we're caught in a loop
     // we should get a flashing red light
@@ -62,54 +26,6 @@ void matrix_scan_kb(void) {
     wdt_reset();
 #endif
 
-#ifdef ISSI_ENABLE
-    // switch/underglow lighting update
-    static uint32_t issi_device = 0;
-    static uint32_t twi_last_ready = 0;
-
-    if (twi_last_ready > 1000) {
-        // It's been way too long since the last ISSI update, reset the I2C bus and start again
-        dprintf("TWI failed to recover, TWI re-init\n");
-        twi_last_ready = 0;
-        TWIInit();
-        force_issi_refresh();
-    }
-
-    if (isTWIReady()) {
-        twi_last_ready = 0;
-        // If the i2c bus is available, kick off the issi update, alternate between devices
-        update_issi(issi_device, issi_device);
-
-        if (issi_device) {
-            issi_device = 0;
-        } else {
-            issi_device = 3;
-        }
-    } else {
-        twi_last_ready++;
-    }
-#endif
-
-    // Update layer indicator LED
-    //
-    // Not sure how else to reliably do this... TMK has the 'hook_layer_change'
-    // but can't find QMK equiv
-    static uint32_t layer_indicator = -1;
-
-    if (layer_indicator != layer_state) {
-        for (uint32_t i = 0; ; i++) {
-            // the layer_info list should end with layer 0xFFFFFFFF
-            // it will break this out of the loop and define the unknown layer color
-            if ((layer_info[i].layer == (layer_state & layer_info[i].mask)) || (layer_info[i].layer == 0xFFFFFFFF)) {
-                OCR1A = layer_info[i].color.red;
-                OCR1B = layer_info[i].color.green;
-                OCR1C = layer_info[i].color.blue;
-                layer_indicator = layer_state;
-                break;
-            }
-        }
-    }
-
     matrix_scan_user();
 }
 
@@ -144,34 +60,5 @@ void reset_keyboard_kb(void) {
     wdt_reset();
 #endif
 
-    OCR1A = 0x0000; // B5 - Red
-    OCR1B = 0x0FFF; // B6 - Green
-    OCR1C = 0x0FFF; // B7 - Blue
-
     reset_keyboard();
 }
-
-bool led_update_kb(led_t led_state) {
-    bool res = led_update_user(led_state);
-    if(res) {
-#ifdef ISSI_ENABLE
-#    ifdef CAPSLOCK_LED
-    if (led_state.caps_lock) {
-        activateLED(0, 3, 7, 255);
-    } else {
-        activateLED(0, 3, 7, 0);
-    }
-#    endif // CAPSLOCK_LED
-#endif // ISS_ENABLE
-
-    }
-    return res;
-}
-
-// LFK lighting info
-const uint8_t switch_matrices[] = { 0, 1 };
-const uint8_t rgb_matrices[] = { 6, 7 };
-const uint8_t rgb_sequence[] = {
-    12, 11, 10, 9, 16, 32, 31, 30, 28, 25, 24, 22, 21,
-    20, 19, 18, 17, 1, 2, 3, 4, 5, 6, 7, 8, 14, 13
-};
diff --git a/keyboards/lfkeyboards/lfk78/lfk78.h b/keyboards/lfkeyboards/lfk78/lfk78.h
index 1be53181cd..ee6f8d47e0 100644
--- a/keyboards/lfkeyboards/lfk78/lfk78.h
+++ b/keyboards/lfkeyboards/lfk78/lfk78.h
@@ -2,21 +2,6 @@
 
 #include "quantum.h"
 
-typedef struct RGB_Color {
-    uint16_t red;
-    uint16_t green;
-    uint16_t blue;
-} RGB_Color;
-
-typedef struct Layer_Info {
-    uint32_t layer;
-    uint32_t mask;
-    RGB_Color color;
-} Layer_Info;
-
-extern const uint32_t layer_count;
-extern const Layer_Info layer_info[];
-
 #define CLICK_HZ 500
 #define CLICK_MS 2
 #define CLICK_ENABLED 0
diff --git a/keyboards/lfkeyboards/lfk78/post_rules.mk b/keyboards/lfkeyboards/lfk78/post_rules.mk
index 817a085f5e..1b087d7e1e 100644
--- a/keyboards/lfkeyboards/lfk78/post_rules.mk
+++ b/keyboards/lfkeyboards/lfk78/post_rules.mk
@@ -1,14 +1,3 @@
-# Extra source files for IS3731 lighting
-SRC += TWIlib.c issi.c lighting.c
-
-ifeq ($(strip $(ISSI_ENABLE)), yes)
-    OPT_DEFS += -DISSI_ENABLE
-endif
-
 ifeq ($(strip $(WATCHDOG_ENABLE)), yes)
     OPT_DEFS += -DWATCHDOG_ENABLE
 endif
-
-ifeq ($(strip $(CAPSLOCK_LED)), yes)
-    OPT_DEFS += -DCAPSLOCK_LED
-endif
diff --git a/keyboards/lfkeyboards/lfk78/revb/info.json b/keyboards/lfkeyboards/lfk78/revb/info.json
index 1431ce1cc6..ac98455afa 100644
--- a/keyboards/lfkeyboards/lfk78/revb/info.json
+++ b/keyboards/lfkeyboards/lfk78/revb/info.json
@@ -13,30 +13,6 @@
         "rows": ["B0", "B1", "B2", "B3", "B4", "F0", "F1", "F4", "F5", "F6"]
     },
     "diode_direction": "COL2ROW",
-    "backlight": {
-        "driver": "custom",
-        "levels": 8
-    },
-    "rgblight": {
-        "driver": "custom",
-        "hue_steps": 10,
-        "led_count": 31,
-        "animations": {
-            "breathing": true,
-            "rainbow_mood": true,
-            "rainbow_swirl": true,
-            "snake": true,
-            "knight": true,
-            "christmas": true,
-            "static_gradient": true,
-            "rgb_test": true,
-            "alternating": true,
-            "twinkle": true
-        }
-    },
-    "ws2812": {
-        "pin": "C7"
-    },
     "processor": "atmega32u4",
     "bootloader": "atmel-dfu",
     "layouts": {
diff --git a/keyboards/lfkeyboards/lfk78/revb/revb.c b/keyboards/lfkeyboards/lfk78/revb/revb.c
deleted file mode 100644
index d5b6b47b03..0000000000
--- a/keyboards/lfkeyboards/lfk78/revb/revb.c
+++ /dev/null
@@ -1,19 +0,0 @@
-#include "quantum.h"
-
-// Maps switch LEDs from Row/Col to ISSI matrix.
-// Value breakdown:
-//     Bit     | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
-//            /    \ ISSI Col  |    ISSI Row   |
-//          matrix idx
-const uint8_t switch_leds[MATRIX_ROWS][MATRIX_COLS] = {
-    {0x19, 0x18, 0x17, 0x16, 0x15, 0x14, 0x13, 0x12},
-    {0x29, 0x28, 0x27, 0x26, 0x25, 0x24, 0x23, 0x22},
-    {0x39, 0x38, 0x37, 0x36, 0x35, 0x34, 0x33, 0x32},
-    {0x49, 0x48, 0x47, 0x45, 0x44, 0x43, 0x42, 0x41},
-    {0x59, 0x58, 0x57, 0x56, 0x55, 0x51, 0xD6, 0xE5},
-    {0x11, 0x99, 0x98, 0x97, 0x96, 0x95, 0x94, 0x93},
-    {0x21, 0xA9, 0xA8, 0xA7, 0xA6, 0xA5, 0xA4, 0xA3},
-    {0x31, 0xB9, 0xB8, 0xB7, 0xB6, 0xB5, 0xB3, 0x00},
-    {0xC9, 0xC8, 0xC7, 0xC6, 0xC5, 0xC4, 0xC2, 0x00},
-    {0xE4, 0xE3, 0xE2, 0xE1, 0x92, 0x91, 0xA2, 0xA1}
-};
diff --git a/keyboards/lfkeyboards/lfk78/revc/info.json b/keyboards/lfkeyboards/lfk78/revc/info.json
index 980ffafc63..7bfaf8cac6 100644
--- a/keyboards/lfkeyboards/lfk78/revc/info.json
+++ b/keyboards/lfkeyboards/lfk78/revc/info.json
@@ -13,30 +13,6 @@
         "rows": ["D2", "D3", "D4", "D5", "D6"]
     },
     "diode_direction": "COL2ROW",
-    "backlight": {
-        "driver": "custom",
-        "levels": 8
-    },
-    "rgblight": {
-        "driver": "custom",
-        "hue_steps": 10,
-        "led_count": 27,
-        "animations": {
-            "breathing": true,
-            "rainbow_mood": true,
-            "rainbow_swirl": true,
-            "snake": true,
-            "knight": true,
-            "christmas": true,
-            "static_gradient": true,
-            "rgb_test": true,
-            "alternating": true,
-            "twinkle": true
-        }
-    },
-    "ws2812": {
-        "pin": "C7"
-    },
     "processor": "at90usb1286",
     "bootloader": "atmel-dfu",
     "layouts": {
diff --git a/keyboards/lfkeyboards/lfk78/revc/revc.c b/keyboards/lfkeyboards/lfk78/revc/revc.c
deleted file mode 100644
index a31aea365b..0000000000
--- a/keyboards/lfkeyboards/lfk78/revc/revc.c
+++ /dev/null
@@ -1,14 +0,0 @@
-#include "quantum.h"
-
-// Maps switch LEDs from Row/Col to ISSI matrix.
-// Value breakdown:
-//     Bit     | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
-//            /    \ ISSI Col  |    ISSI Row   |
-//          matrix idx
-const uint8_t switch_leds[MATRIX_ROWS][MATRIX_COLS] = {
-    {0x19, 0x18, 0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x99, 0x98, 0x97, 0x96, 0x95, 0x94, 0x93, 0x92, 0x91},
-    {0x29, 0x28, 0x27, 0x26, 0x25, 0x24, 0x23, 0x22, 0x21, 0xA9, 0xA8, 0xA7, 0xA6, 0xA5, 0xA4, 0xA3, 0xA2, 0xA1},
-    {0x39, 0x38, 0x37, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0xB9, 0xB8, 0xB7, 0xB6, 0xB5, 0xB3, 0x00, 0x00, 0x00},
-    {0x49, 0x48, 0x47, 0x00, 0x45, 0x44, 0x43, 0x42, 0x41, 0xC9, 0xC8, 0xC7, 0xC6, 0xC5, 0xC4, 0x00, 0xC2, 0x00},
-    {0x59, 0x58, 0x57, 0x56, 0x55, 0x00, 0x00, 0x00, 0x51, 0x00, 0x00, 0x00, 0xD6, 0xE5, 0xE4, 0xE3, 0xE2, 0xE1}
-};
diff --git a/keyboards/lfkeyboards/lfk78/revj/info.json b/keyboards/lfkeyboards/lfk78/revj/info.json
index 5ff7bcbbfd..f99df02ed9 100644
--- a/keyboards/lfkeyboards/lfk78/revj/info.json
+++ b/keyboards/lfkeyboards/lfk78/revj/info.json
@@ -13,30 +13,6 @@
         "rows": ["D2", "D3", "D4", "D5", "D6"]
     },
     "diode_direction": "COL2ROW",
-    "backlight": {
-        "driver": "custom",
-        "levels": 8
-    },
-    "rgblight": {
-        "driver": "custom",
-        "hue_steps": 10,
-        "led_count": 27,
-        "animations": {
-            "breathing": true,
-            "rainbow_mood": true,
-            "rainbow_swirl": true,
-            "snake": true,
-            "knight": true,
-            "christmas": true,
-            "static_gradient": true,
-            "rgb_test": true,
-            "alternating": true,
-            "twinkle": true
-        }
-    },
-    "ws2812": {
-        "pin": "C7"
-    },
     "processor": "at90usb646",
     "bootloader": "atmel-dfu",
     "layouts": {
diff --git a/keyboards/lfkeyboards/lfk78/revj/revj.c b/keyboards/lfkeyboards/lfk78/revj/revj.c
deleted file mode 100644
index a31aea365b..0000000000
--- a/keyboards/lfkeyboards/lfk78/revj/revj.c
+++ /dev/null
@@ -1,14 +0,0 @@
-#include "quantum.h"
-
-// Maps switch LEDs from Row/Col to ISSI matrix.
-// Value breakdown:
-//     Bit     | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
-//            /    \ ISSI Col  |    ISSI Row   |
-//          matrix idx
-const uint8_t switch_leds[MATRIX_ROWS][MATRIX_COLS] = {
-    {0x19, 0x18, 0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x99, 0x98, 0x97, 0x96, 0x95, 0x94, 0x93, 0x92, 0x91},
-    {0x29, 0x28, 0x27, 0x26, 0x25, 0x24, 0x23, 0x22, 0x21, 0xA9, 0xA8, 0xA7, 0xA6, 0xA5, 0xA4, 0xA3, 0xA2, 0xA1},
-    {0x39, 0x38, 0x37, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0xB9, 0xB8, 0xB7, 0xB6, 0xB5, 0xB3, 0x00, 0x00, 0x00},
-    {0x49, 0x48, 0x47, 0x00, 0x45, 0x44, 0x43, 0x42, 0x41, 0xC9, 0xC8, 0xC7, 0xC6, 0xC5, 0xC4, 0x00, 0xC2, 0x00},
-    {0x59, 0x58, 0x57, 0x56, 0x55, 0x00, 0x00, 0x00, 0x51, 0x00, 0x00, 0x00, 0xD6, 0xE5, 0xE4, 0xE3, 0xE2, 0xE1}
-};
diff --git a/keyboards/lfkeyboards/lfk78/rules.mk b/keyboards/lfkeyboards/lfk78/rules.mk
index 4e3f7b9256..82ffed96f5 100644
--- a/keyboards/lfkeyboards/lfk78/rules.mk
+++ b/keyboards/lfkeyboards/lfk78/rules.mk
@@ -7,13 +7,7 @@ EXTRAKEY_ENABLE = yes           # Audio control and System control
 CONSOLE_ENABLE = no             # Console for debug
 COMMAND_ENABLE = no             # Commands for debug and configuration
 NKRO_ENABLE = yes           # Enable N-Key Rollover
-BACKLIGHT_ENABLE = yes          # Enable keyboard backlight functionality
 AUDIO_ENABLE = no               # Audio output
-RGBLIGHT_ENABLE = yes           # Enable WS2812 RGB underlight.
-SLEEP_LED_ENABLE = yes
-
-ISSI_ENABLE = yes               # If the I2C pullup resistors aren't install this must be disabled
 WATCHDOG_ENABLE = no            # Resets keyboard if matrix_scan isn't run every 250ms
-CAPSLOCK_LED = no              # Toggle back light LED of Caps Lock
 
 DEFAULT_FOLDER = lfkeyboards/lfk78/revj
diff --git a/keyboards/lfkeyboards/lfk87/config.h b/keyboards/lfkeyboards/lfk87/config.h
index 20aba2ad6b..84c2fd11dc 100644
--- a/keyboards/lfkeyboards/lfk87/config.h
+++ b/keyboards/lfkeyboards/lfk87/config.h
@@ -20,8 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define AUDIO_VOICES
 #define AUDIO_PIN C6
 
-#define BACKLIGHT_PWM_MAP {2, 4, 8, 16, 40, 55, 70, 128, 200, 255}
-
 /* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
 #define LOCKING_SUPPORT_ENABLE
 /* Locking resynchronize hack */
diff --git a/keyboards/lfkeyboards/lfk87/info.json b/keyboards/lfkeyboards/lfk87/info.json
index 6a2d5eb796..0b53928421 100644
--- a/keyboards/lfkeyboards/lfk87/info.json
+++ b/keyboards/lfkeyboards/lfk87/info.json
@@ -8,15 +8,5 @@
     "pid": "0x6060",
     "device_version": "0.0.1"
   },
-  "backlight": {
-    "driver": "custom",
-    "levels": 10
-  },
-  "rgblight": {
-    "driver": "custom"
-  },
-  "ws2812": {
-    "pin": "F4"
-  },
   "community_layouts": ["tkl_ansi", "tkl_iso"]
 }
diff --git a/keyboards/lfkeyboards/lfk87/keymaps/ca178858/keymap.c b/keyboards/lfkeyboards/lfk87/keymaps/ca178858/keymap.c
index 0dfba1afac..3be46837c1 100644
--- a/keyboards/lfkeyboards/lfk87/keymaps/ca178858/keymap.c
+++ b/keyboards/lfkeyboards/lfk87/keymaps/ca178858/keymap.c
@@ -13,17 +13,6 @@ enum {
     TD_ESC_FUNC = 0,
 };
 
-// Colors of the layer indicator LED
-// This list needs to define layer 0xFFFFFFFF, it is the end of the list, and the unknown layer
-const Layer_Info layer_info[] = {
-    // Layer     Mask           Red     Green   Blue
-    {0x00000000, 0xFFFFFFF8, {0x00, 0xFF, 0x00}}, // base layers (VANILLA, DEFAULT_WKL, DEFAULT_OSX) - green
-    {0x00000008, 0xFFFFFFF8, {0x07FF, 0x07FF, 0x0000}}, // CSGO layer - orange
-    {0x00000010, 0xFFFFFFF0, {0x0000, 0x0000, 0x0FFF}}, // function layer - blue
-    {0x00000020, 0xFFFFFFE0, {0x0FFF, 0x0000, 0x0FFF}}, // settings layer - magenta
-    {0xFFFFFFFF, 0xFFFFFFFF, {0x0FFF, 0x0FFF, 0x0FFF}}, // unknown layer - REQUIRED - white
-};
-
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     /* Keymap VANILLA: (Base Layer) Default Layer
      * ,-----------------------------------------------------------------------------.
diff --git a/keyboards/lfkeyboards/lfk87/keymaps/ca178858/rules.mk b/keyboards/lfkeyboards/lfk87/keymaps/ca178858/rules.mk
index 8d2c18f6dd..eb12c33f4a 100644
--- a/keyboards/lfkeyboards/lfk87/keymaps/ca178858/rules.mk
+++ b/keyboards/lfkeyboards/lfk87/keymaps/ca178858/rules.mk
@@ -1,17 +1,2 @@
-BOOTMAGIC_ENABLE = no       # Enable Bootmagic Lite
-MOUSEKEY_ENABLE = no            # Mouse keys(+4700)
-EXTRAKEY_ENABLE = yes           # Audio control and System control(+450)
-CONSOLE_ENABLE = yes            # Console for debug(+400)
-COMMAND_ENABLE = yes            # Commands for debug and configuration
-NKRO_ENABLE = yes
-BACKLIGHT_ENABLE = yes          # Enable keyboard backlight functionality
-MIDI_ENABLE = no                # MIDI controls
-AUDIO_ENABLE = yes              # Audio output on port C6
-UNICODE_ENABLE = no             # Unicode
-BLUETOOTH_ENABLE = no           # Disable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE = yes           # Enable RGB underlight
-SLEEP_LED_ENABLE = yes
 TAP_DANCE_ENABLE = yes
-
-ISSI_ENABLE = yes			# If the I2C pullup resistors aren't install this must be disabled
 WATCHDOG_ENABLE = yes		# Resets keyboard if matrix_scan isn't run every 250ms
diff --git a/keyboards/lfkeyboards/lfk87/keymaps/default/keymap.c b/keyboards/lfkeyboards/lfk87/keymaps/default/keymap.c
index 2b1860fab3..b9057e9047 100644
--- a/keyboards/lfkeyboards/lfk87/keymaps/default/keymap.c
+++ b/keyboards/lfkeyboards/lfk87/keymaps/default/keymap.c
@@ -6,16 +6,6 @@ enum keymap_layout {
     SETTINGS,     // 0x10
 };
 
-// Colors of the layer indicator LED
-// This list needs to define layer 0xFFFFFFFF, it is the end of the list, and the unknown layer
-const Layer_Info layer_info[] = {
-    // Layer     Mask           Red     Green   Blue
-    {0x00000000, 0xFFFFFFFF, {0x00, 0xFF, 0x00}}, // base layers - green
-    {0x00000002, 0xFFFFFFFE, {0x00, 0x00, 0xFF}}, // function layer - blue
-    {0x00000004, 0xFFFFFFFC, {0xFF, 0x00, 0xFF}}, // settings layer - magenta
-    {0xFFFFFFFF, 0xFFFFFFFF, {0xFF, 0xFF, 0xFF}}, // unknown layer - REQUIRED - white
-};
-
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     /* Keymap VANILLA: (Base Layer) Default Layer
      * ,-----------------------------------------------------------------------------.
diff --git a/keyboards/lfkeyboards/lfk87/keymaps/default/rules.mk b/keyboards/lfkeyboards/lfk87/keymaps/default/rules.mk
index ec4ce1afba..bcd6b23d23 100644
--- a/keyboards/lfkeyboards/lfk87/keymaps/default/rules.mk
+++ b/keyboards/lfkeyboards/lfk87/keymaps/default/rules.mk
@@ -1,13 +1 @@
-BOOTMAGIC_ENABLE = no       # Enable Bootmagic Lite
-MOUSEKEY_ENABLE = no            # Mouse keys
-EXTRAKEY_ENABLE = yes           # Audio control and System control
-CONSOLE_ENABLE = no             # Console for debug
-COMMAND_ENABLE = no             # Commands for debug and configuration
-NKRO_ENABLE = yes
-BACKLIGHT_ENABLE = yes           # Enable keyboard backlight functionality
-AUDIO_ENABLE = yes              # Audio output
-RGBLIGHT_ENABLE = yes           # Enable RGB underlight
-SLEEP_LED_ENABLE = yes
-
-ISSI_ENABLE = yes			# If the I2C pullup resistors aren't install this must be disabled
 WATCHDOG_ENABLE = no		# Resets keyboard if matrix_scan isn't run every 250ms
diff --git a/keyboards/lfkeyboards/lfk87/keymaps/gbchk/keymap.c b/keyboards/lfkeyboards/lfk87/keymaps/gbchk/keymap.c
index 48726503ab..0191b3570f 100644
--- a/keyboards/lfkeyboards/lfk87/keymaps/gbchk/keymap.c
+++ b/keyboards/lfkeyboards/lfk87/keymaps/gbchk/keymap.c
@@ -6,16 +6,6 @@ enum keymap_layout {
     SETTINGS,     // 0x10
 };
 
-// Colors of the layer indicator LED
-// This list needs to define layer 0xFFFFFFFF, it is the end of the list, and the unknown layer
-const Layer_Info layer_info[] = {
-    // Layer     Mask           Red     Green   Blue
-    {0x00000000, 0xFFFFFFFF, {0x00, 0x00, 0x00}}, // base layers - off
-    {0x00000002, 0xFFFFFFFE, {0x00, 0x00, 0xFF}}, // function layer - blue
-    {0x00000004, 0xFFFFFFFC, {0xFF, 0x00, 0xFF}}, // settings layer - magenta
-    {0xFFFFFFFF, 0xFFFFFFFF, {0xFF, 0xFF, 0xFF}}, // unknown layer - REQUIRED - white
-};
-
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     /* Keymap VANILLA: (Base Layer) Default Layer
      * ,-----------------------------------------------------------------------------.
diff --git a/keyboards/lfkeyboards/lfk87/keymaps/gbchk/rules.mk b/keyboards/lfkeyboards/lfk87/keymaps/gbchk/rules.mk
index 01b8506d3a..bcd6b23d23 100644
--- a/keyboards/lfkeyboards/lfk87/keymaps/gbchk/rules.mk
+++ b/keyboards/lfkeyboards/lfk87/keymaps/gbchk/rules.mk
@@ -1,16 +1 @@
-BOOTMAGIC_ENABLE = no       # Enable Bootmagic Lite
-MOUSEKEY_ENABLE = no            # Mouse keys(+4700)
-EXTRAKEY_ENABLE = yes           # Audio control and System control(+450)
-CONSOLE_ENABLE = no             # Console for debug(+400)
-COMMAND_ENABLE = no             # Commands for debug and configuration
-NKRO_ENABLE = yes
-BACKLIGHT_ENABLE = yes           # Enable keyboard backlight functionality
-MIDI_ENABLE = no                # MIDI controls
-AUDIO_ENABLE = yes              # Audio output on port C6
-UNICODE_ENABLE = no             # Unicode
-BLUETOOTH_ENABLE = no           # Enable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE = yes           # Enable RGB underlight
-SLEEP_LED_ENABLE = yes
-
-ISSI_ENABLE = yes			# If the I2C pullup resistors aren't install this must be disabled
 WATCHDOG_ENABLE = no		# Resets keyboard if matrix_scan isn't run every 250ms
diff --git a/keyboards/lfkeyboards/lfk87/keymaps/iso/keymap.c b/keyboards/lfkeyboards/lfk87/keymaps/iso/keymap.c
index 56ca013b0d..510aa6730f 100644
--- a/keyboards/lfkeyboards/lfk87/keymaps/iso/keymap.c
+++ b/keyboards/lfkeyboards/lfk87/keymaps/iso/keymap.c
@@ -6,16 +6,6 @@ enum keymap_layout {
     SETTINGS,     // 0x04
 };
 
-// Colors of the layer indicator LED
-// This list needs to define layer 0xFFFFFFFF, it is the end of the list, and the unknown layer
-const Layer_Info layer_info[] = {
-    // Layer     Mask         Red   Green Blue
-    {0x00000000, 0xFFFFFFFF, {0x00, 0x00, 0x00}}, // base layer - off
-    {0x00000002, 0xFFFFFFFE, {0x00, 0x00, 0x7F}}, // function layer - blue
-    {0x00000004, 0xFFFFFFFC, {0x7F, 0x00, 0x00}}, // settings layer - red
-    {0xFFFFFFFF, 0xFFFFFFFF, {0x0F, 0x0F, 0x0F}}, // unknown layer - REQUIRED - white
-};
-
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     /* Keymap VANILLA: (Base Layer) Default Layer
      * ,-----------------------------------------------------------------------------.
diff --git a/keyboards/lfkeyboards/lfk87/keymaps/iso/rules.mk b/keyboards/lfkeyboards/lfk87/keymaps/iso/rules.mk
index 7baa40317a..a5f96a8317 100644
--- a/keyboards/lfkeyboards/lfk87/keymaps/iso/rules.mk
+++ b/keyboards/lfkeyboards/lfk87/keymaps/iso/rules.mk
@@ -1,13 +1,2 @@
-BOOTMAGIC_ENABLE = no       # Enable Bootmagic Lite
-MOUSEKEY_ENABLE = no            # Mouse keys
-EXTRAKEY_ENABLE = yes           # Audio control and System control
-CONSOLE_ENABLE = no             # Console for debug
-COMMAND_ENABLE = no             # Commands for debug and configuration
-NKRO_ENABLE = yes
-BACKLIGHT_ENABLE = yes          # Enable keyboard backlight functionality
-AUDIO_ENABLE = yes              # Audio output
-RGBLIGHT_ENABLE = yes           # Enable RGB underlight
-SLEEP_LED_ENABLE = yes
-
-ISSI_ENABLE = yes               # If the I2C pullup resistors aren't install this must be disabled
+AUDIO_ENABLE = yes
 WATCHDOG_ENABLE = no           # Resets keyboard if matrix_scan isn't run every 250ms
diff --git a/keyboards/lfkeyboards/lfk87/lfk87.c b/keyboards/lfkeyboards/lfk87/lfk87.c
index 3e95361a33..849f0ebcc5 100644
--- a/keyboards/lfkeyboards/lfk87/lfk87.c
+++ b/keyboards/lfkeyboards/lfk87/lfk87.c
@@ -1,42 +1,20 @@
-
-#include <avr/sfr_defs.h>
-#include <avr/timer_avr.h>
-#include <avr/wdt.h>
 #include "lfk87.h"
-#include "issi.h"
-#include "TWIlib.h"
-#include "lighting.h"
-#include "debug.h"
-#include "quantum.h"
+#include <avr/wdt.h>
 
 uint16_t click_hz = CLICK_HZ;
 uint16_t click_time = CLICK_MS;
 uint8_t click_toggle = CLICK_ENABLED;
 
-__attribute__((weak))
-const Layer_Info layer_info[] = {
-    // Layer     Mask           Red     Green   Blue
-    {0x00000000, 0xFFFFFFFF, {0x00, 0xFF, 0x00}}, // base layers - green
-    {0x00000002, 0xFFFFFFFE, {0x00, 0x00, 0xFF}}, // function layer - blue
-    {0x00000004, 0xFFFFFFFC, {0xFF, 0x00, 0xFF}}, // settings layer - magenta
-    {0xFFFFFFFF, 0xFFFFFFFF, {0xFF, 0xFF, 0xFF}}, // unknown layer - REQUIRED - white
-};
-
 void matrix_init_kb(void)
 {
     // put your keyboard start-up code here
     // runs once when the firmware starts up
     matrix_init_user();
-    set_rgb(31, 0x00, 0x00, 0x00);  // Caps lock
-    set_rgb(32, 0xFF, 0x00, 0x00);  // Layer indicator, start red
 #ifndef AUDIO_ENABLE
     // If we're not using the audio pin, drive it low
     setPinOutput(C6);
     writePinLow(C6);
 #endif
-#ifdef ISSI_ENABLE
-    issi_init();
-#endif
 #ifdef WATCHDOG_ENABLE
     // This is done after turning the layer LED red, if we're caught in a loop
     // we should get a flashing red light
@@ -49,49 +27,10 @@ void matrix_scan_kb(void)
 #ifdef WATCHDOG_ENABLE
     wdt_reset();
 #endif
-#ifdef ISSI_ENABLE
-    // switch/underglow lighting update
-    static uint32_t issi_device = 0;
-    static uint32_t twi_last_ready = 0;
-    if(twi_last_ready > 1000){
-        // Its been way too long since the last ISSI update, reset the I2C bus and start again
-        twi_last_ready = 0;
-        TWIInit();
-        force_issi_refresh();
-    }
-    if(isTWIReady()){
-        twi_last_ready = 0;
-        // If the i2c bus is available, kick off the issi update, alternate between devices
-        update_issi(issi_device, issi_device);
-        if(issi_device){
-            issi_device = 0;
-        }else{
-            issi_device = 3;
-        }
-    }else{
-        twi_last_ready++;
-    }
-#endif
-    // Update layer indicator LED
-    //
-    // Not sure how else to reliably do this... TMK has the 'hook_layer_change'
-    // but can't find QMK equiv
-    static uint32_t layer_indicator = -1;
-    if(layer_indicator != layer_state){
-        for(uint32_t i=0;; i++){
-            // the layer_info list should end with layer 0xFFFF
-            // it will break this out of the loop and define the unknown layer color
-            if((layer_info[i].layer == (layer_state & layer_info[i].mask)) || (layer_info[i].layer == 0xFFFFFFFF)){
-                set_rgb(32, layer_info[i].color.red, layer_info[i].color.green, layer_info[i].color.blue);
-                layer_indicator = layer_state;
-                break;
-            }
-        }
-    }
     matrix_scan_user();
 }
 
-void click(uint16_t freq, uint16_t duration){
+void clicking_notes(uint16_t freq, uint16_t duration){
 #ifdef AUDIO_ENABLE
     if(freq >= 100 && freq <= 20000 && duration < 100){
         play_note(freq, 10);
@@ -106,11 +45,10 @@ void click(uint16_t freq, uint16_t duration){
 bool process_record_kb(uint16_t keycode, keyrecord_t* record)
 {
     if (click_toggle && record->event.pressed){
-        click(click_hz, click_time);
+        clicking_notes(click_hz, click_time);
     }
     if (keycode == QK_BOOT) {
         reset_keyboard_kb();
-    } else {
     }
     return process_record_user(keycode, record);
 }
@@ -121,35 +59,5 @@ void reset_keyboard_kb(void){
     wdt_disable();
     wdt_reset();
 #endif
-    set_rgb(31, 0x00, 0xFF, 0xFF);
-    set_rgb(32, 0x00, 0xFF, 0xFF);
-    force_issi_refresh();
     reset_keyboard();
 }
-
-bool led_update_kb(led_t led_state) {
-    bool res = led_update_user(led_state);
-    if(res) {
-        // Set capslock LED to Blue
-        if (led_state.caps_lock) {
-            set_rgb(31, 0x00, 0x00, 0x7F);
-        } else{
-            set_rgb(31, 0x00, 0x00, 0x00);
-        }
-    }
-    return res;
-}
-
-// Lighting info, see lighting.h for details
-const uint8_t switch_matrices[] = {0, 1};
-const uint8_t rgb_matrices[] = {6, 7};
-
-// RGB Map:
-//   27  29  10   9   8   7   6
-// 26                                   5
-// 25                                   4
-// 24                                   3
-//   23  22  21  20  14  15  11   1   2
-const uint8_t rgb_sequence[] = {
-    27, 29, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 11, 15, 14, 20, 21, 22, 23, 24, 25, 26
-};
diff --git a/keyboards/lfkeyboards/lfk87/lfk87.h b/keyboards/lfkeyboards/lfk87/lfk87.h
index d17c1da26f..ee6f8d47e0 100644
--- a/keyboards/lfkeyboards/lfk87/lfk87.h
+++ b/keyboards/lfkeyboards/lfk87/lfk87.h
@@ -1,27 +1,10 @@
 #pragma once
 
 #include "quantum.h"
-#include "matrix.h"
-#include <avr/sfr_defs.h>
-
-typedef struct RGB_Color {
-    uint16_t red;
-    uint16_t green;
-    uint16_t blue;
-} RGB_Color;
-
-typedef struct Layer_Info {
-    uint32_t layer;
-    uint32_t mask;
-    RGB_Color color;
-} Layer_Info;
-
-extern const uint32_t layer_count;
-extern const Layer_Info layer_info[];
 
 #define CLICK_HZ 500
 #define CLICK_MS 2
 #define CLICK_ENABLED 0
 
 void reset_keyboard_kb(void);
-void click(uint16_t freq, uint16_t duration);
+void clicking_notes(uint16_t freq, uint16_t duration);
diff --git a/keyboards/lfkeyboards/lfk87/post_rules.mk b/keyboards/lfkeyboards/lfk87/post_rules.mk
index 044d9754f1..1b087d7e1e 100644
--- a/keyboards/lfkeyboards/lfk87/post_rules.mk
+++ b/keyboards/lfkeyboards/lfk87/post_rules.mk
@@ -1,7 +1,3 @@
-ifeq ($(strip $(ISSI_ENABLE)), yes)
-    OPT_DEFS += -DISSI_ENABLE
-endif
-
 ifeq ($(strip $(WATCHDOG_ENABLE)), yes)
     OPT_DEFS += -DWATCHDOG_ENABLE
 endif
diff --git a/keyboards/lfkeyboards/lfk87/reva/info.json b/keyboards/lfkeyboards/lfk87/reva/info.json
index ad3ad7f877..95b5ff81b7 100644
--- a/keyboards/lfkeyboards/lfk87/reva/info.json
+++ b/keyboards/lfkeyboards/lfk87/reva/info.json
@@ -6,22 +6,6 @@
         "rows": ["D2", "D3", "D4", "D5", "D6", "D7"]
     },
     "diode_direction": "COL2ROW",
-    "rgblight": {
-        "hue_steps": 10,
-        "led_count": 25,
-        "animations": {
-            "breathing": true,
-            "rainbow_mood": true,
-            "rainbow_swirl": true,
-            "snake": true,
-            "knight": true,
-            "christmas": true,
-            "static_gradient": true,
-            "rgb_test": true,
-            "alternating": true,
-            "twinkle": true
-        }
-    },
     "layouts": {
         "LAYOUT_tkl_ansi": {
             "layout": [
diff --git a/keyboards/lfkeyboards/lfk87/reva/reva.c b/keyboards/lfkeyboards/lfk87/reva/reva.c
deleted file mode 100644
index 86289c7a01..0000000000
--- a/keyboards/lfkeyboards/lfk87/reva/reva.c
+++ /dev/null
@@ -1,16 +0,0 @@
-#include "quantum.h"
-
-// Maps switch LEDs from Row/Col to ISSI matrix.
-// Value breakdown:
-//     Bit     | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
-//             |   | ISSI Col  |    ISSI Row   |
-//             /   |
-//             Device
-const uint8_t switch_leds[MATRIX_ROWS][MATRIX_COLS] = {
-    {0x19, 0x00, 0x18, 0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x99, 0x98, 0x97, 0x96, 0x95, 0x94, 0x93},
-    {0x92, 0x91, 0x29, 0x28, 0x27, 0x26, 0x25, 0x24, 0x23, 0x22, 0x21, 0xA9, 0xA8, 0xA7, 0xA6, 0xA5, 0xA4},
-    {0xA3, 0xA2, 0xA1, 0x39, 0x38, 0x37, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0xB9, 0xB8, 0xB7, 0xB6, 0xB5},
-    {0xB3, 0x49, 0x48, 0x47, 0x45, 0x44, 0x43, 0x42, 0x41, 0xC9, 0xC8, 0xC7, 0xC6, 0x00, 0x00, 0x00, 0x00},
-    {0xC5, 0x00, 0xC4, 0xC2, 0x59, 0x58, 0x57, 0x56, 0x55, 0x51, 0xD6, 0xE5, 0xE4, 0x00, 0x00, 0xE3, 0x00},
-    {0xE2, 0xE1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}
-};
diff --git a/keyboards/lfkeyboards/lfk87/revc/info.json b/keyboards/lfkeyboards/lfk87/revc/info.json
index cf627facdf..cf8c74397f 100644
--- a/keyboards/lfkeyboards/lfk87/revc/info.json
+++ b/keyboards/lfkeyboards/lfk87/revc/info.json
@@ -6,22 +6,6 @@
         "rows": ["F2", "D7", "D6", "D5", "D4", "D3", "F3"]
     },
     "diode_direction": "COL2ROW",
-    "rgblight": {
-        "hue_steps": 10,
-        "led_count": 24,
-        "animations": {
-            "breathing": true,
-            "rainbow_mood": true,
-            "rainbow_swirl": true,
-            "snake": true,
-            "knight": true,
-            "christmas": true,
-            "static_gradient": true,
-            "rgb_test": true,
-            "alternating": true,
-            "twinkle": true
-        }
-    },
     "layouts": {
         "LAYOUT_tkl_ansi": {
             "layout": [
diff --git a/keyboards/lfkeyboards/lfk87/revc/revc.c b/keyboards/lfkeyboards/lfk87/revc/revc.c
deleted file mode 100644
index f14a1f38e5..0000000000
--- a/keyboards/lfkeyboards/lfk87/revc/revc.c
+++ /dev/null
@@ -1,17 +0,0 @@
-#include "quantum.h"
-
-// Maps switch LEDs from Row/Col to ISSI matrix.
-// Value breakdown:
-//     Bit     | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
-//             |   | ISSI Col  |    ISSI Row   |
-//             /   |
-//             Device
-const uint8_t switch_leds[MATRIX_ROWS][MATRIX_COLS] = {
-    {0x18, 0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x99, 0x98, 0x97, 0x96, 0x00, 0x95, 0x94, 0x93},
-    {0x29, 0x28, 0x27, 0x26, 0x25, 0x24, 0x23, 0x22, 0x21, 0xA9, 0xA8, 0xA7, 0x00, 0xA6, 0xA5, 0xA4},
-    {0xA2, 0xA1, 0x39, 0x38, 0x37, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0xB9, 0xB8, 0xB7, 0xB6, 0xB5},
-    {0x49, 0x48, 0x47, 0x45, 0x44, 0x43, 0x42, 0x41, 0xC9, 0xC8, 0xC7, 0xC6, 0x00, 0x00, 0x00, 0x00},
-    {0x00, 0xC4, 0xC2, 0x59, 0x58, 0x57, 0x56, 0x55, 0x51, 0xD6, 0xE5, 0xE4, 0x00, 0x00, 0xE3, 0x00},
-    {0xB3, 0xC5, 0xE2, 0xE1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
-    {0x19, 0x92, 0x91, 0xA3, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}
-};
diff --git a/keyboards/lfkeyboards/lfk87/rules.mk b/keyboards/lfkeyboards/lfk87/rules.mk
index 154e03fe77..3a1399d693 100644
--- a/keyboards/lfkeyboards/lfk87/rules.mk
+++ b/keyboards/lfkeyboards/lfk87/rules.mk
@@ -8,15 +8,7 @@ EXTRAKEY_ENABLE = yes           # Audio control and System control
 CONSOLE_ENABLE = no             # Console for debug
 COMMAND_ENABLE = no             # Commands for debug and configuration
 NKRO_ENABLE = yes           # Enable N-Key Rollover
-BACKLIGHT_ENABLE = yes          # Enable keyboard backlight functionality
 AUDIO_ENABLE = yes              # Audio output
-RGBLIGHT_ENABLE = yes           # Enable RGB underlight
-SLEEP_LED_ENABLE = yes
-
-ISSI_ENABLE = yes			# If the I2C pullup resistors aren't install this must be disabled
 WATCHDOG_ENABLE = no		# Resets keyboard if matrix_scan isn't run every 250ms
 
-# Extra source files for IS3731 lighting
-SRC += TWIlib.c issi.c lighting.c
-
 DEFAULT_FOLDER = lfkeyboards/lfk78/revc
diff --git a/keyboards/lfkeyboards/lfkpad/info.json b/keyboards/lfkeyboards/lfkpad/info.json
index a3910b0df5..0a41696cdc 100644
--- a/keyboards/lfkeyboards/lfkpad/info.json
+++ b/keyboards/lfkeyboards/lfkpad/info.json
@@ -8,26 +8,6 @@
         "pid": "0x3231",
         "device_version": "0.0.1"
     },
-    "rgblight": {
-        "driver": "custom",
-        "hue_steps": 10,
-        "led_count": 28,
-        "animations": {
-            "breathing": true,
-            "rainbow_mood": true,
-            "rainbow_swirl": true,
-            "snake": true,
-            "knight": true,
-            "christmas": true,
-            "static_gradient": true,
-            "rgb_test": true,
-            "alternating": true,
-            "twinkle": true
-        }
-    },
-    "ws2812": {
-        "pin": "C7"
-    },
     "matrix_pins": {
         "cols": ["F1", "F0", "D4", "D6"],
         "rows": ["D5", "F4", "F6", "F7", "C7", "C6"]
diff --git a/keyboards/lfkeyboards/lfkpad/keymaps/pascalpfeil/keymap.c b/keyboards/lfkeyboards/lfkpad/keymaps/pascalpfeil/keymap.c
index 94f66e78b2..466adfea47 100644
--- a/keyboards/lfkeyboards/lfkpad/keymaps/pascalpfeil/keymap.c
+++ b/keyboards/lfkeyboards/lfkpad/keymaps/pascalpfeil/keymap.c
@@ -56,18 +56,3 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
             _______,      _______, _______
     ),
 };
-
-const uint8_t number_leds[] = {8, 9, 10, 11, 12, 13, 15, 16, 17};
-const uint8_t number_leds_size = ARRAY_SIZE(number_leds);
-
-bool led_update_user(led_t led_state) {
-    for (uint8_t i = 0; i < number_leds_size; i++)
-        if (led_state.num_lock)
-            // set to whatever the other leds are doing
-            // this is needed so that upon disabling num lock, the leds don't stay red 
-            rgblight_sethsv_at(rgblight_get_hue(), rgblight_get_sat(), rgblight_get_val(), numer_leds[i]); 
-        else
-            rgblight_setrgb_at(RGB_RED, numer_leds[i]); // set to red
-
-    return true;
-}
diff --git a/keyboards/lfkeyboards/lfkpad/lfkpad.c b/keyboards/lfkeyboards/lfkpad/lfkpad.c
index 7d8dd865fb..8769c2c531 100644
--- a/keyboards/lfkeyboards/lfkpad/lfkpad.c
+++ b/keyboards/lfkeyboards/lfkpad/lfkpad.c
@@ -1,18 +1,9 @@
 #include "quantum.h"
-
-#include <avr/timer_avr.h>
 #include <avr/wdt.h>
-#include "issi.h"
-#include "TWIlib.h"
-#include "lighting.h"
 
 void matrix_init_kb(void) {
     matrix_init_user();
 
-#ifdef ISSI_ENABLE
-    issi_init();
-#endif
-
 #ifdef WATCHDOG_ENABLE
     // This is done after turning the layer LED red, if we're caught in a loop
     // we should get a flashing red light
@@ -25,48 +16,5 @@ void matrix_scan_kb(void) {
     wdt_reset();
 #endif
 
-#ifdef ISSI_ENABLE
-    // switch/underglow lighting update
-    static uint32_t issi_device = 0;
-    static uint32_t twi_last_ready = 0;
-
-    if (twi_last_ready > 1000) {
-        // It's been way too long since the last ISSI update, reset the I2C bus and start again
-        dprintf("TWI failed to recover, TWI re-init\n");
-        twi_last_ready = 0;
-        TWIInit();
-        force_issi_refresh();
-    }
-
-    if (isTWIReady()) {
-        twi_last_ready = 0;
-        // If the i2c bus is available, kick off the issi update, alternate between devices
-        update_issi(issi_device, issi_device);
-
-        if (issi_device) {
-            issi_device = 0;
-        } else {
-            issi_device = 3;
-        }
-    } else {
-        twi_last_ready++;
-    }
-#endif
-
     matrix_scan_user();
 }
-
-// LFK lighting info
-const uint8_t rgb_matrices[] = { 0, 1 };
-const uint8_t rgb_sequence[] = {
-    32,  1,  2,  3,
-    31, 30,  5,  6,
-    28, 27,  7,
-    17, 18,  9,  8,
-    19, 21, 11,
-      22,   14, 12,
-    16,         26,
-     4,         25,
-    13,         24,
-          20
-};
diff --git a/keyboards/lfkeyboards/lfkpad/post_rules.mk b/keyboards/lfkeyboards/lfkpad/post_rules.mk
index 044d9754f1..1b087d7e1e 100644
--- a/keyboards/lfkeyboards/lfkpad/post_rules.mk
+++ b/keyboards/lfkeyboards/lfkpad/post_rules.mk
@@ -1,7 +1,3 @@
-ifeq ($(strip $(ISSI_ENABLE)), yes)
-    OPT_DEFS += -DISSI_ENABLE
-endif
-
 ifeq ($(strip $(WATCHDOG_ENABLE)), yes)
     OPT_DEFS += -DWATCHDOG_ENABLE
 endif
diff --git a/keyboards/lfkeyboards/lfkpad/rules.mk b/keyboards/lfkeyboards/lfkpad/rules.mk
index ec8efa88bf..996d454d74 100644
--- a/keyboards/lfkeyboards/lfkpad/rules.mk
+++ b/keyboards/lfkeyboards/lfkpad/rules.mk
@@ -7,12 +7,5 @@ EXTRAKEY_ENABLE = yes        # Audio control and System control
 CONSOLE_ENABLE = no          # Console for debug
 COMMAND_ENABLE = no          # Commands for debug and configuration
 NKRO_ENABLE = no            # Enable N-Key Rollover
-BACKLIGHT_ENABLE = no        # Enable keyboard backlight functionality
-RGBLIGHT_ENABLE = yes        # Enable keyboard RGB underglow
 AUDIO_ENABLE = no            # Audio output
-SLEEP_LED_ENABLE = yes
-
-ISSI_ENABLE = yes            # If the I2C pullup resistors aren't installed this must be disabled
 WATCHDOG_ENABLE = no         # Resets keyboard if matrix_scan() isn't run every 250ms
-
-SRC = TWIlib.c issi.c lighting.c
diff --git a/keyboards/lfkeyboards/lighting.c b/keyboards/lfkeyboards/lighting.c
deleted file mode 100644
index 5f3ab46e46..0000000000
--- a/keyboards/lfkeyboards/lighting.c
+++ /dev/null
@@ -1,158 +0,0 @@
-#ifdef ISSI_ENABLE
-
-
-#include <avr/sfr_defs.h>
-#include <avr/timer_avr.h>
-#include <avr/wdt.h>
-#include "quantum.h"
-// #include "lfk87.h"
-#include "issi.h"
-#include "TWIlib.h"
-#include "lighting.h"
-#include "debug.h"
-#include "rgblight.h"
-
-
-extern rgblight_config_t rgblight_config; // Declared in rgblight.c
-
-#ifdef BACKLIGHT_ENABLE
-    const uint8_t backlight_pwm_map[BACKLIGHT_LEVELS] = BACKLIGHT_PWM_MAP;
-#endif
-
-// RGB# to ISSI matrix, this is the same across all revisions
-const uint8_t rgb_leds[][3][2] = {
-        {{0, 0}, {0, 0}, {0, 0}},
-        {{1, 1}, {2, 3}, {2, 4}},   // RGB1/RGB17
-        {{2, 1}, {2, 2}, {3, 4}},   // RGB2/RGB18
-        {{3, 1}, {3, 2}, {3, 3}},   // RGB3/RGB19
-        {{4, 1}, {4, 2}, {4, 3}},   // RGB4/RGB20
-        {{5, 1}, {5, 2}, {5, 3}},   // RGB5/RGB21
-        {{6, 1}, {6, 2}, {6, 3}},   // RGB6/RGB22
-        {{7, 1}, {7, 2}, {7, 3}},   // RGB6/RGB23
-        {{8, 1}, {8, 2}, {8, 3}},   // RGB8/RGB24
-        {{1, 9}, {1, 8}, {1, 7}},   // RGB9/RGB25
-        {{2, 9}, {2, 8}, {2, 7}},   // RGB10/RGB26
-        {{3, 9}, {3, 8}, {3, 7}},   // RGB11/RGB27
-        {{4, 9}, {4, 8}, {4, 7}},   // RGB12/RGB28
-        {{5, 9}, {5, 8}, {5, 7}},   // RGB13/RGB29
-        {{6, 9}, {6, 8}, {6, 7}},   // RGB14/RGB30
-        {{7, 9}, {7, 8}, {6, 6}},   // RGB15/RGB31
-        {{8, 9}, {7, 7}, {7, 6}}    // RGB16/RGB32
-    };
-
-void set_rgb(uint8_t rgb_led, uint8_t red, uint8_t green, uint8_t blue){
-#ifdef RGBLIGHT_ENABLE
-    uint8_t matrix = rgb_matrices[0];
-    if(rgb_led >= 17){
-        matrix = rgb_matrices[1];
-        rgb_led -= 16;
-    }
-    if(rgb_leds[rgb_led][0][1] != 0){
-        activateLED(matrix, rgb_leds[rgb_led][0][0], rgb_leds[rgb_led][0][1], red);
-    }
-    if(rgb_leds[rgb_led][1][1] != 0){
-        activateLED(matrix, rgb_leds[rgb_led][1][0], rgb_leds[rgb_led][1][1], green);
-    }
-    if(rgb_leds[rgb_led][2][1] != 0){
-        activateLED(matrix, rgb_leds[rgb_led][2][0], rgb_leds[rgb_led][2][1], blue);
-    }
-#endif
-}
-
-void backlight_set(uint8_t level){
-#ifdef BACKLIGHT_ENABLE
-    uint8_t pwm_value = 0;
-    if(level >= BACKLIGHT_LEVELS){
-        level = BACKLIGHT_LEVELS;
-    }
-    if(level > 0){
-        pwm_value = backlight_pwm_map[level-1];
-    }
-    for(int x = 1; x <= 9; x++){
-        for(int y = 1; y <= 9; y++){
-            activateLED(switch_matrices[0], x, y, pwm_value);
-            activateLED(switch_matrices[1], x, y, pwm_value);
-        }
-    }
-#endif
-}
-
-void set_underglow(uint8_t red, uint8_t green, uint8_t blue){
-#ifdef RGBLIGHT_ENABLE
-    for(uint8_t x = 1; x <= 32; x++){
-        set_rgb(x, red, green, blue);
-    }
-#endif
-}
-
-
-void rgblight_set(void) {
-#ifdef RGBLIGHT_ENABLE
-    for(uint8_t i = 0; (i < sizeof(rgb_sequence)) && (i < RGBLED_NUM); i++){
-        if(rgblight_config.enable){
-            set_rgb(rgb_sequence[i], led[i].r, led[i].g, led[i].b);
-        }else{
-            set_rgb(rgb_sequence[i], 0, 0, 0);
-        }
-    }
-#endif
-}
-
-void set_backlight_by_keymap(uint8_t col, uint8_t row){
-#ifdef RGBLIGHT_ENABLE
-    uint8_t lookup_value = switch_leds[row][col];
-    uint8_t matrix = switch_matrices[0];
-    if(lookup_value & 0x80){
-        matrix = switch_matrices[1];
-    }
-    issi_devices[0]->led_dirty = 1;
-    uint8_t led_col = (lookup_value & 0x70) >> 4;
-    uint8_t led_row = lookup_value & 0x0F;
-    activateLED(matrix, led_col, led_row, 255);
-#endif
-}
-
-void force_issi_refresh(void){
-#ifdef ISSI_ENABLE
-    issi_devices[0]->led_dirty = true;
-    update_issi(0, true);
-    issi_devices[3]->led_dirty = true;
-    update_issi(3, true);
-#endif
-}
-
-void led_test(void){
-#ifdef ISSI_ENABLE
-#ifdef WATCHDOG_ENABLE
-    // This test take a long time to run, disable the WTD until its complete
-    wdt_disable();
-#endif
-    backlight_set(0);
-    set_underglow(0, 0, 0);
-    force_issi_refresh();
-    set_underglow(0, 0, 0);
-    for(uint8_t x = 0; x < sizeof(rgb_sequence); x++){
-        set_rgb(rgb_sequence[x], 255, 0, 0);
-        force_issi_refresh();
-        _delay_ms(250);
-        set_rgb(rgb_sequence[x], 0, 255, 0);
-        force_issi_refresh();
-        _delay_ms(250);
-        set_rgb(rgb_sequence[x], 0, 0, 255);
-        force_issi_refresh();
-        _delay_ms(250);
-        set_rgb(rgb_sequence[x], 0, 0, 0);
-        force_issi_refresh();
-    }
-#ifdef WATCHDOG_ENABLE
-    wdt_enable(WDTO_250MS);
-#endif
-#endif
-}
-
-void backlight_init_ports(void){
-    issi_init();
-}
-
-#endif
-
diff --git a/keyboards/lfkeyboards/lighting.h b/keyboards/lfkeyboards/lighting.h
deleted file mode 100644
index cb07755c53..0000000000
--- a/keyboards/lfkeyboards/lighting.h
+++ /dev/null
@@ -1,49 +0,0 @@
-#pragma once
-
-// rgb_sequence[RGBLED_NUM]
-//
-// Array used for sequential lighting effects.
-//
-// Example LFK78 RevC+ RGB Map:
-//   27  29  10   9   8   7   6
-// 26                                   5
-// 25                                   4
-// 24                                   3
-//   23  22  21  20  14  15  11   1   2
-//
-// const uint8_t rgb_sequence[] = {
-//     27, 29, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1,
-//     11, 15, 14, 20, 21, 22, 23, 24, 25, 26
-// };
-extern const uint8_t rgb_sequence[RGBLED_NUM];
-
-// switch_matrices[]
-//
-// The ISSI matrices for switch backlighting
-//
-// Example LFK78 RevC+ - ISSI Device 0, banks 0 and 1:
-// switch_matrices[] = {0, 1};
-extern const uint8_t switch_matrices[];
-
-// rgb_matrices[]
-// The ISSI matrices for RGB Underglow
-//
-// Example LFK78 RevC+ - ISSI Device 3, banks 0 and 1:
-// rgb_matrices[] = {6, 7};
-extern const uint8_t rgb_matrices[];
-
-// switch_leds[MATRIX_ROWS][MATRIX_COLS]
-// Maps switch LEDs from Row/Col to ISSI matrix.
-// Value breakdown:
-//     Bit     | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
-//             |   | ISSI Col  |    ISSI Row   |
-//             |   |
-//             Device
-extern const uint8_t switch_leds[MATRIX_ROWS][MATRIX_COLS];
-
-void led_test(void);
-void force_issi_refresh(void);
-void set_backlight(uint8_t level);
-void set_underglow(uint8_t red, uint8_t green, uint8_t blue);
-void set_rgb(uint8_t rgb_led, uint8_t red, uint8_t green, uint8_t blue);
-void set_backlight_by_keymap(uint8_t col, uint8_t row);
diff --git a/keyboards/lfkeyboards/mini1800/config.h b/keyboards/lfkeyboards/mini1800/config.h
index 20aba2ad6b..84c2fd11dc 100644
--- a/keyboards/lfkeyboards/mini1800/config.h
+++ b/keyboards/lfkeyboards/mini1800/config.h
@@ -20,8 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define AUDIO_VOICES
 #define AUDIO_PIN C6
 
-#define BACKLIGHT_PWM_MAP {2, 4, 8, 16, 40, 55, 70, 128, 200, 255}
-
 /* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
 #define LOCKING_SUPPORT_ENABLE
 /* Locking resynchronize hack */
diff --git a/keyboards/lfkeyboards/mini1800/info.json b/keyboards/lfkeyboards/mini1800/info.json
index 6737c1baca..35bb1c15a8 100644
--- a/keyboards/lfkeyboards/mini1800/info.json
+++ b/keyboards/lfkeyboards/mini1800/info.json
@@ -13,30 +13,6 @@
         "rows": ["D7", "E1", "F2", "F0", "F1"]
     },
     "diode_direction": "COL2ROW",
-    "backlight": {
-        "driver": "custom",
-        "levels": 10
-    },
-    "rgblight": {
-        "driver": "custom",
-        "hue_steps": 10,
-        "led_count": 26,
-        "animations": {
-            "breathing": true,
-            "rainbow_mood": true,
-            "rainbow_swirl": true,
-            "snake": true,
-            "knight": true,
-            "christmas": true,
-            "static_gradient": true,
-            "rgb_test": true,
-            "alternating": true,
-            "twinkle": true
-        }
-    },
-    "ws2812": {
-        "pin": "F4"
-    },
     "layouts": {
         "LAYOUT": {
             "layout": [
diff --git a/keyboards/lfkeyboards/mini1800/keymaps/ca178858/keymap.c b/keyboards/lfkeyboards/mini1800/keymaps/ca178858/keymap.c
index 75abdc258c..9e3927f545 100644
--- a/keyboards/lfkeyboards/mini1800/keymaps/ca178858/keymap.c
+++ b/keyboards/lfkeyboards/mini1800/keymaps/ca178858/keymap.c
@@ -12,16 +12,6 @@ enum {
     TD_SPC_SPAM
 };
 
-// Colors of the layer indicator LED
-// This list needs to define layer 0xFFFFFFFF, it is the end of the list, and the unknown layer
-const Layer_Info layer_info[] = {
-    // Layer     Mask           Red     Green   Blue
-    {0x00000000, 0xFFFFFFFF, {0x00, 0xFF, 0x00}}, // base layers - green
-    {0x00000002, 0xFFFFFFFE, {0x00, 0x00, 0xFF}}, // function layer - blue
-    {0x00000004, 0xFFFFFFFC, {0xFF, 0x00, 0xFF}}, // settings layer - magenta
-    {0xFFFFFFFF, 0xFFFFFFFF, {0xFF, 0xFF, 0xFF}}, // unknown layer - REQUIRED - white
-};
-
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     /* Keymap VANILLA: (Base Layer) Default Layer
      * ,-----------------------------------------------------------------------------.
diff --git a/keyboards/lfkeyboards/mini1800/keymaps/default/keymap.c b/keyboards/lfkeyboards/mini1800/keymaps/default/keymap.c
index 7341bdc053..c2abd12843 100644
--- a/keyboards/lfkeyboards/mini1800/keymaps/default/keymap.c
+++ b/keyboards/lfkeyboards/mini1800/keymaps/default/keymap.c
@@ -6,16 +6,6 @@ enum keymap_layout {
     SETTINGS,     // 0x10
 };
 
-// Colors of the layer indicator LED
-// This list needs to define layer 0xFFFFFFFF, it is the end of the list, and the unknown layer
-const Layer_Info layer_info[] = {
-    // Layer     Mask           Red     Green   Blue
-    {0x00000000, 0xFFFFFFFF, {0x00, 0xFF, 0x00}}, // base layers - green
-    {0x00000002, 0xFFFFFFFE, {0x00, 0x00, 0xFF}}, // function layer - blue
-    {0x00000004, 0xFFFFFFFC, {0xFF, 0x00, 0xFF}}, // settings layer - magenta
-    {0xFFFFFFFF, 0xFFFFFFFF, {0xFF, 0xFF, 0xFF}}, // unknown layer - REQUIRED - white
-};
-
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     /* Keymap VANILLA: (Base Layer) Default Layer
      * ,-----------------------------------------------------------------------------.
diff --git a/keyboards/lfkeyboards/mini1800/mini1800.c b/keyboards/lfkeyboards/mini1800/mini1800.c
index e1fa3a988d..2ca87cfdb6 100644
--- a/keyboards/lfkeyboards/mini1800/mini1800.c
+++ b/keyboards/lfkeyboards/mini1800/mini1800.c
@@ -1,47 +1,22 @@
-
-#include <avr/sfr_defs.h>
-#include <avr/timer_avr.h>
-#include <avr/wdt.h>
 #include "mini1800.h"
-#include "issi.h"
-#include "TWIlib.h"
-#include "lighting.h"
-#include "debug.h"
-
-#include "quantum.h"
+#include <avr/wdt.h>
 
 uint16_t click_hz = CLICK_HZ;
 uint16_t click_time = CLICK_MS;
 uint8_t click_toggle = CLICK_ENABLED;
 float my_song[][2] = SONG(ZELDA_PUZZLE);
 
-// Colors of the layer indicator LED
-// This list needs to define layer 0xFFFFFFFF, it is the end of the list, and the unknown layer
-__attribute__((weak))
-const Layer_Info layer_info[] = {
-    // Layer     Mask           Red     Green   Blue
-    {0x00000000, 0xFFFFFFFF, {0x00, 0xFF, 0x00}}, // base layers - green
-    {0x00000002, 0xFFFFFFFE, {0x00, 0x00, 0xFF}}, // function layer - blue
-    {0x00000004, 0xFFFFFFFC, {0xFF, 0x00, 0xFF}}, // settings layer - magenta
-    {0xFFFFFFFF, 0xFFFFFFFF, {0xFF, 0xFF, 0xFF}}, // unknown layer - REQUIRED - white
-};
-
 void matrix_init_kb(void)
 {
     // put your keyboard start-up code here
     // runs once when the firmware starts up
     matrix_init_user();
-    set_rgb(31, 0x00, 0x00, 0x00);  // Caps lock
-    set_rgb(32, 0xFF, 0x00, 0x00);  // Layer indicator, start red
 #ifndef AUDIO_ENABLE
     // If we're not using the audio pin, drive it low
     setPinOutput(C6);
     writePinLow(C6);
 #endif
     _delay_ms(500);
-#ifdef ISSI_ENABLE
-    issi_init();
-#endif
 #ifdef WATCHDOG_ENABLE
     // This is done after turning the layer LED red, if we're caught in a loop
     // we should get a flashing red light
@@ -54,45 +29,6 @@ void matrix_scan_kb(void)
 #ifdef WATCHDOG_ENABLE
     wdt_reset();
 #endif
-#ifdef ISSI_ENABLE
-    // switch/underglow lighting update
-    static uint32_t issi_device = 0;
-    static uint32_t twi_last_ready = 0;
-    if(twi_last_ready > 1000){
-        // Its been way too long since the last ISSI update, reset the I2C bus and start again
-        twi_last_ready = 0;
-        TWIInit();
-        force_issi_refresh();
-    }
-    if(isTWIReady()){
-        twi_last_ready = 0;
-        // If the i2c bus is available, kick off the issi update, alternate between devices
-        update_issi(issi_device, issi_device);
-        if(issi_device){
-            issi_device = 0;
-        }else{
-            issi_device = 3;
-        }
-    }else{
-        twi_last_ready++;
-    }
-#endif
-    // Update layer indicator LED
-    //
-    // Not sure how else to reliably do this... TMK has the 'hook_layer_change'
-    // but can't find QMK equiv
-    static uint32_t layer_indicator = -1;
-    if(layer_indicator != layer_state){
-        for(uint32_t i=0;; i++){
-            // the layer_info list should end with layer 0xFFFF
-            // it will break this out of the loop and define the unknown layer color
-            if((layer_info[i].layer == (layer_state & layer_info[i].mask)) || (layer_info[i].layer == 0xFFFFFFFF)){
-                set_rgb(32, layer_info[i].color.red, layer_info[i].color.green, layer_info[i].color.blue);
-                layer_indicator = layer_state;
-                break;
-            }
-        }
-    }
     matrix_scan_user();
 }
 
@@ -115,7 +51,6 @@ bool process_record_kb(uint16_t keycode, keyrecord_t* record)
     }
     if (keycode == QK_BOOT) {
         reset_keyboard_kb();
-    } else {
     }
     return process_record_user(keycode, record);
 }
@@ -126,49 +61,5 @@ void reset_keyboard_kb(void){
     wdt_disable();
     wdt_reset();
 #endif
-    set_rgb(31, 0x00, 0xFF, 0xFF);
-    set_rgb(32, 0x00, 0xFF, 0xFF);
-    force_issi_refresh();
     reset_keyboard();
 }
-
-bool led_update_kb(led_t led_state) {
-    bool res = led_update_user(led_state);
-    if(res) {
-        // Set capslock LED to Blue
-        if (led_state.caps_lock) {
-            set_rgb(31, 0x00, 0x00, 0x7F);
-        } else{
-            set_rgb(31, 0x00, 0x00, 0x00);
-        }
-    }
-    return res;
-}
-
-// Lighting info, see lighting.h for details
-const uint8_t switch_matrices[] = {0, 1};
-const uint8_t rgb_matrices[] = {6, 7};
-
-// RGB Map:
-//   27  29  10   9   8   7   6
-// 26                                   5
-// 25                                   4
-// 24                                   3
-//   23  22  21  20  14  15  11   1   2
-const uint8_t rgb_sequence[] = {
-    30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 1, 2, 3, 4, 5, 6, 7, 8, 13, 14, 15, 16
-};
-
-// Maps switch LEDs from Row/Col to ISSI matrix.
-// Value breakdown:
-//     Bit     | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
-//             |   | ISSI Col  |    ISSI Row   |
-//             /   |
-//             Device
-const uint8_t switch_leds[MATRIX_ROWS][MATRIX_COLS] = {
-    {0x19, 0x18, 0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x99, 0x98, 0x97, 0x96, 0x00, 0x95, 0x94, 0x93, 0x92, 0x91},
-    {0x29, 0x28, 0x27, 0x26, 0x25, 0x24, 0x23, 0x22, 0x21, 0xA9, 0xA8, 0xA7, 0xA6, 0xA5, 0xB6, 0xA4, 0xA3, 0xA2, 0xA1},
-    {0x39, 0x38, 0x37, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0xB9, 0xB8, 0xB7, 0x00, 0x00, 0x00, 0xB5, 0xB3, 0x49, 0x48},
-    {0x47, 0x00, 0x45, 0x44, 0x43, 0x42, 0x41, 0xC9, 0xC8, 0xC7, 0xC6, 0xC5, 0xC4, 0x00, 0xC2, 0x59, 0x58, 0x57, 0x56},
-    {0x55, 0x51, 0xD6, 0x00, 0x00, 0xE5, 0x00, 0x00, 0x00, 0x00, 0xE4, 0xE3, 0xE2, 0x00, 0xE1, 0x00, 0x00, 0x00, 0x00}
-};
diff --git a/keyboards/lfkeyboards/mini1800/mini1800.h b/keyboards/lfkeyboards/mini1800/mini1800.h
index c412058096..36797efd8f 100644
--- a/keyboards/lfkeyboards/mini1800/mini1800.h
+++ b/keyboards/lfkeyboards/mini1800/mini1800.h
@@ -1,22 +1,6 @@
 #pragma once
 
-#include "matrix.h"
-#include <avr/sfr_defs.h>
-
-typedef struct RGB_Color {
-    uint16_t red;
-    uint16_t green;
-    uint16_t blue;
-} RGB_Color;
-
-typedef struct Layer_Info {
-    uint32_t layer;
-    uint32_t mask;
-    RGB_Color color;
-} Layer_Info;
-
-extern const uint32_t layer_count;
-extern const Layer_Info layer_info[];
+#include "quantum.h"
 
 #define CLICK_HZ 500
 #define CLICK_MS 2
diff --git a/keyboards/lfkeyboards/mini1800/reva/post_rules.mk b/keyboards/lfkeyboards/mini1800/reva/post_rules.mk
index 044d9754f1..1b087d7e1e 100644
--- a/keyboards/lfkeyboards/mini1800/reva/post_rules.mk
+++ b/keyboards/lfkeyboards/mini1800/reva/post_rules.mk
@@ -1,7 +1,3 @@
-ifeq ($(strip $(ISSI_ENABLE)), yes)
-    OPT_DEFS += -DISSI_ENABLE
-endif
-
 ifeq ($(strip $(WATCHDOG_ENABLE)), yes)
     OPT_DEFS += -DWATCHDOG_ENABLE
 endif
diff --git a/keyboards/lfkeyboards/mini1800/reva/rules.mk b/keyboards/lfkeyboards/mini1800/reva/rules.mk
index 473bcb10ae..fa0a6ab5b7 100644
--- a/keyboards/lfkeyboards/mini1800/reva/rules.mk
+++ b/keyboards/lfkeyboards/mini1800/reva/rules.mk
@@ -7,13 +7,5 @@ EXTRAKEY_ENABLE = yes       # Audio control and System control
 CONSOLE_ENABLE = no         # Console for debug
 COMMAND_ENABLE = no         # Commands for debug and configuration
 NKRO_ENABLE = yes           # Enable N-Key Rollover
-BACKLIGHT_ENABLE = yes      # Enable keyboard backlight functionality
-RGBLIGHT_ENABLE = yes       # Enable keyboard RGB underglow
 AUDIO_ENABLE = yes          # Audio output
-SLEEP_LED_ENABLE = yes
-
-ISSI_ENABLE = yes           # If the I2C pullup resistors aren't install this must be disabled
 WATCHDOG_ENABLE = yes       # Resets keyboard if matrix_scan isn't run every 250ms
-
-# Extra source files for IS3731 lighting
-SRC = TWIlib.c issi.c lighting.c
diff --git a/keyboards/lfkeyboards/mini1800/revc/post_rules.mk b/keyboards/lfkeyboards/mini1800/revc/post_rules.mk
index 044d9754f1..1b087d7e1e 100644
--- a/keyboards/lfkeyboards/mini1800/revc/post_rules.mk
+++ b/keyboards/lfkeyboards/mini1800/revc/post_rules.mk
@@ -1,7 +1,3 @@
-ifeq ($(strip $(ISSI_ENABLE)), yes)
-    OPT_DEFS += -DISSI_ENABLE
-endif
-
 ifeq ($(strip $(WATCHDOG_ENABLE)), yes)
     OPT_DEFS += -DWATCHDOG_ENABLE
 endif
diff --git a/keyboards/lfkeyboards/mini1800/revc/rules.mk b/keyboards/lfkeyboards/mini1800/revc/rules.mk
index 473bcb10ae..fa0a6ab5b7 100644
--- a/keyboards/lfkeyboards/mini1800/revc/rules.mk
+++ b/keyboards/lfkeyboards/mini1800/revc/rules.mk
@@ -7,13 +7,5 @@ EXTRAKEY_ENABLE = yes       # Audio control and System control
 CONSOLE_ENABLE = no         # Console for debug
 COMMAND_ENABLE = no         # Commands for debug and configuration
 NKRO_ENABLE = yes           # Enable N-Key Rollover
-BACKLIGHT_ENABLE = yes      # Enable keyboard backlight functionality
-RGBLIGHT_ENABLE = yes       # Enable keyboard RGB underglow
 AUDIO_ENABLE = yes          # Audio output
-SLEEP_LED_ENABLE = yes
-
-ISSI_ENABLE = yes           # If the I2C pullup resistors aren't install this must be disabled
 WATCHDOG_ENABLE = yes       # Resets keyboard if matrix_scan isn't run every 250ms
-
-# Extra source files for IS3731 lighting
-SRC = TWIlib.c issi.c lighting.c
diff --git a/keyboards/lfkeyboards/smk65/keymaps/default/rules.mk b/keyboards/lfkeyboards/smk65/keymaps/default/rules.mk
deleted file mode 100644
index 1f0147bd38..0000000000
--- a/keyboards/lfkeyboards/smk65/keymaps/default/rules.mk
+++ /dev/null
@@ -1,8 +0,0 @@
-# Build Options
-#   change yes to no to disable
-#
-AUDIO_ENABLE = no              # Audio output
-RGBLIGHT_ENABLE = no           # Enable keyboard RGB underglow
-
-ISSI_ENABLE = no               # If the I2C pullup resistors aren't install this must be disabled
-WATCHDOG_ENABLE = no           # Resets keyboard if matrix_scan isn't run every 250ms
diff --git a/keyboards/lfkeyboards/smk65/keymaps/iso/rules.mk b/keyboards/lfkeyboards/smk65/keymaps/iso/rules.mk
deleted file mode 100644
index 1f0147bd38..0000000000
--- a/keyboards/lfkeyboards/smk65/keymaps/iso/rules.mk
+++ /dev/null
@@ -1,8 +0,0 @@
-# Build Options
-#   change yes to no to disable
-#
-AUDIO_ENABLE = no              # Audio output
-RGBLIGHT_ENABLE = no           # Enable keyboard RGB underglow
-
-ISSI_ENABLE = no               # If the I2C pullup resistors aren't install this must be disabled
-WATCHDOG_ENABLE = no           # Resets keyboard if matrix_scan isn't run every 250ms
diff --git a/keyboards/lfkeyboards/smk65/post_rules.mk b/keyboards/lfkeyboards/smk65/post_rules.mk
index 044d9754f1..1b087d7e1e 100644
--- a/keyboards/lfkeyboards/smk65/post_rules.mk
+++ b/keyboards/lfkeyboards/smk65/post_rules.mk
@@ -1,7 +1,3 @@
-ifeq ($(strip $(ISSI_ENABLE)), yes)
-    OPT_DEFS += -DISSI_ENABLE
-endif
-
 ifeq ($(strip $(WATCHDOG_ENABLE)), yes)
     OPT_DEFS += -DWATCHDOG_ENABLE
 endif
diff --git a/keyboards/lfkeyboards/smk65/revb/config.h b/keyboards/lfkeyboards/smk65/revb/config.h
index c758caa92c..38b0529178 100644
--- a/keyboards/lfkeyboards/smk65/revb/config.h
+++ b/keyboards/lfkeyboards/smk65/revb/config.h
@@ -30,8 +30,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define AUDIO_VOICES
 #define AUDIO_PIN C6
 
-#define BACKLIGHT_PWM_MAP {8, 16, 40, 55, 70, 128, 200, 255}
-
 /* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
 #define LOCKING_SUPPORT_ENABLE
 /* Locking resynchronize hack */
diff --git a/keyboards/lfkeyboards/smk65/revb/info.json b/keyboards/lfkeyboards/smk65/revb/info.json
index 39df87cc23..148465d27d 100644
--- a/keyboards/lfkeyboards/smk65/revb/info.json
+++ b/keyboards/lfkeyboards/smk65/revb/info.json
@@ -2,29 +2,6 @@
     "usb": {
         "pid": "0x565B"
     },
-    "backlight": {
-        "levels": 8
-    },
-    "rgblight": {
-        "driver": "custom",
-        "hue_steps": 10,
-        "led_count": 20,
-        "animations": {
-            "breathing": true,
-            "rainbow_mood": true,
-            "rainbow_swirl": true,
-            "snake": true,
-            "knight": true,
-            "christmas": true,
-            "static_gradient": true,
-            "rgb_test": true,
-            "alternating": true,
-            "twinkle": true
-        }
-    },
-    "ws2812": {
-        "pin": "C7"
-    },
     "processor": "at90usb646",
     "bootloader": "atmel-dfu",
     "layout_aliases": {
diff --git a/keyboards/lfkeyboards/smk65/revb/revb.c b/keyboards/lfkeyboards/smk65/revb/revb.c
index 32dbce8fd5..8eb9b9afe2 100644
--- a/keyboards/lfkeyboards/smk65/revb/revb.c
+++ b/keyboards/lfkeyboards/smk65/revb/revb.c
@@ -12,14 +12,8 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#include <avr/sfr_defs.h>
-#include <avr/timer_avr.h>
-#include <avr/wdt.h>
 #include "revb.h"
-#include "debug.h"
-#include "issi.h"
-#include "TWIlib.h"
-#include "lighting.h"
+#include <avr/wdt.h>
 
 uint16_t click_hz = CLICK_HZ;
 uint16_t click_time = CLICK_MS;
@@ -40,10 +34,6 @@ void matrix_init_kb(void)
     setPinOutput(C6);
     writePinLow(C6);
 #endif
-
-#ifdef ISSI_ENABLE
-    issi_init();
-#endif
 }
 
 void matrix_scan_kb(void)
@@ -75,7 +65,6 @@ bool process_record_kb(uint16_t keycode, keyrecord_t* record)
     }
     if (keycode == QK_BOOT) {
         reset_keyboard_kb();
-    } else {
     }
     return process_record_user(keycode, record);
 }
@@ -88,27 +77,3 @@ void reset_keyboard_kb(void){
 #endif
     reset_keyboard();
 }
-
-// LFK lighting info
-const uint8_t switch_matrices[] = {0, 1};
-const uint8_t rgb_matrices[] = {6, 7};
-// const uint8_t rgb_sequence[] = {
-//     14, 24, 23, 22, 21, 20, 19, 18, 26, 25, 28, 29,
-//     30, 31, 32, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13
-// };
-const uint8_t rgb_sequence[] = {
-    25, 28, 29,
-    30, 31, 32, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
-};
-// Maps switch LEDs from Row/Col to ISSI matrix.
-// Value breakdown:
-//     Bit     | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
-//            /    \ ISSI Col  |    ISSI Row   |
-//          matrix idx
-// const uint8_t switch_leds[MATRIX_ROWS][MATRIX_COLS] =
-// KEYMAP(
-//   0x19, 0x18,   0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x99, 0x98, 0x97, 0x96, 0x95, 0x94,   0x93,   0x92, 0x91,
-//   0x29, 0x28,    0x27,  0x26, 0x25, 0x24, 0x23, 0x22, 0x21, 0xA9, 0xA8, 0xA7, 0xA6, 0xA5, 0xA4, 0xA3,   0xA2, 0xA1,
-//   0x39, 0x38,      0x37,  0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0xB9, 0xB8, 0xB7, 0xB6, 0xB5,     0xB3,
-//   0x49, 0x48,    0x47,     0x45, 0x44, 0x43, 0x42, 0x41, 0xC9, 0xC8, 0xC7, 0xC6, 0xC5,          0xC4,   0xC2,
-//   0x59, 0x58,   0x57,  0x56,  0x55,             0x51,                   0xD6, 0xE5, 0xE4,         0xE3, 0xE2, 0xE1);
diff --git a/keyboards/lfkeyboards/smk65/revb/revb.h b/keyboards/lfkeyboards/smk65/revb/revb.h
index 6b63eb7944..61973b0b9d 100644
--- a/keyboards/lfkeyboards/smk65/revb/revb.h
+++ b/keyboards/lfkeyboards/smk65/revb/revb.h
@@ -15,23 +15,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #pragma once
 
 #include "quantum.h"
-#include "matrix.h"
-#include <avr/sfr_defs.h>
-
-typedef struct RGB_Color {
-    uint16_t red;
-    uint16_t green;
-    uint16_t blue;
-} RGB_Color;
-
-typedef struct Layer_Info {
-    uint32_t layer;
-    uint32_t mask;
-    RGB_Color color;
-} Layer_Info;
-
-extern const uint32_t layer_count;
-extern const Layer_Info layer_info[];
 
 #define CLICK_HZ 500
 #define CLICK_MS 2
diff --git a/keyboards/lfkeyboards/smk65/revb/rules.mk b/keyboards/lfkeyboards/smk65/revb/rules.mk
index 1bd6ebc6a6..e69de29bb2 100644
--- a/keyboards/lfkeyboards/smk65/revb/rules.mk
+++ b/keyboards/lfkeyboards/smk65/revb/rules.mk
@@ -1,9 +0,0 @@
-# Build Options
-#   change yes to no to disable
-#
-BACKLIGHT_ENABLE = no           # Enable keyboard backlight functionality
-RGBLIGHT_ENABLE = no            # Enable keyboard RGB underglow
-AUDIO_ENABLE = no               # Audio output
-
-# Extra source files for IS3731 lighting
-SRC += TWIlib.c issi.c lighting.c
diff --git a/keyboards/lfkeyboards/smk65/revf/info.json b/keyboards/lfkeyboards/smk65/revf/info.json
index 50c039b76c..63e9d0abc7 100644
--- a/keyboards/lfkeyboards/smk65/revf/info.json
+++ b/keyboards/lfkeyboards/smk65/revf/info.json
@@ -4,10 +4,6 @@
     },
     "processor": "atmega32u4",
     "bootloader": "halfkay",
-    "rgblight": {
-        "driver": "custom",
-        "led_count": 28
-    },
     "layouts": {
         "LAYOUT_65_ansi": {
             "layout": [
diff --git a/keyboards/lfkeyboards/smk65/revf/rules.mk b/keyboards/lfkeyboards/smk65/revf/rules.mk
index e372473a50..e69de29bb2 100644
--- a/keyboards/lfkeyboards/smk65/revf/rules.mk
+++ b/keyboards/lfkeyboards/smk65/revf/rules.mk
@@ -1,4 +0,0 @@
-# Build Options
-#   change yes to no to disable
-#
-RGBLIGHT_ENABLE = no        	# TODO: Enable keyboard RGB underglow