Adds IS31FL3731 RGB Matrix Implementation (#2910)

* adds is31fl3731 rgb matrix implementation

* fix build script for force pushes

* allow bootloader size to be overwritten

* adds planck light implementation

* split led config into 2 arrays

* idk

* betterize register handling

* update planck implementation

* update planck

* refine rgb interface

* cleanup names, rgb matrix

* start documentation

* finish up docs

* add effects list

* clean-up merge

* add RGB_MATRIX_SKIP_FRAMES

* add support for at90usb1286 to bootloader options

19 files changed, 2336 insertions, 19 deletions

diff --git a/bootloader.mk b/bootloader.mk
index 55352f3d42..f30e38dd05 100644
--- a/bootloader.mk
+++ b/bootloader.mk
@@ -32,17 +32,32 @@
 ifeq ($(strip $(BOOTLOADER)), atmel-dfu)
     OPT_DEFS += -DBOOTLOADER_ATMEL_DFU
     OPT_DEFS += -DBOOTLOADER_DFU
-    BOOTLOADER_SIZE = 4096
+    ifeq ($(strip $(MCU)), atmega32u4)
+      BOOTLOADER_SIZE = 4096
+    endif
+    ifeq ($(strip $(MCU)), at90usb1286)
+      BOOTLOADER_SIZE = 8192
+    endif
 endif
 ifeq ($(strip $(BOOTLOADER)), lufa-dfu)
     OPT_DEFS += -DBOOTLOADER_LUFA_DFU
     OPT_DEFS += -DBOOTLOADER_DFU
-    BOOTLOADER_SIZE = 4096
+    ifeq ($(strip $(MCU)), atmega32u4)
+      BOOTLOADER_SIZE = 4096
+    endif
+    ifeq ($(strip $(MCU)), at90usb1286)
+      BOOTLOADER_SIZE = 8192
+    endif
 endif
 ifeq ($(strip $(BOOTLOADER)), qmk-dfu)
     OPT_DEFS += -DBOOTLOADER_QMK_DFU
     OPT_DEFS += -DBOOTLOADER_DFU
-    BOOTLOADER_SIZE = 4096
+    ifeq ($(strip $(MCU)), atmega32u4)
+      BOOTLOADER_SIZE = 4096
+    endif
+    ifeq ($(strip $(MCU)), at90usb1286)
+      BOOTLOADER_SIZE = 8192
+    endif
 endif
 ifeq ($(strip $(BOOTLOADER)), halfkay)
     OPT_DEFS += -DBOOTLOADER_HALFKAY
@@ -59,4 +74,4 @@ endif
 
 ifdef BOOTLOADER_SIZE
     OPT_DEFS += -DBOOTLOADER_SIZE=$(strip $(BOOTLOADER_SIZE))
-endif
\ No newline at end of file
+endif
diff --git a/common_features.mk b/common_features.mk
index 7bd43afdba..7ba7d48154 100644
--- a/common_features.mk
+++ b/common_features.mk
@@ -114,6 +114,15 @@ ifeq ($(strip $(RGBLIGHT_ENABLE)), yes)
     endif
 endif
 
+ifeq ($(strip $(RGB_MATRIX_ENABLE)), yes)
+    OPT_DEFS += -DRGB_MATRIX_ENABLE
+    SRC += is31fl3731.c
+    SRC += TWIlib.c
+    SRC += $(QUANTUM_DIR)/color.c
+    SRC += $(QUANTUM_DIR)/rgb_matrix.c
+    CIE1931_CURVE = yes
+endif
+
 ifeq ($(strip $(TAP_DANCE_ENABLE)), yes)
     OPT_DEFS += -DTAP_DANCE_ENABLE
     SRC += $(QUANTUM_DIR)/process_keycode/process_tap_dance.c
diff --git a/docs/feature_rgb_matrix.md b/docs/feature_rgb_matrix.md
new file mode 100644
index 0000000000..dfc103247a
--- /dev/null
+++ b/docs/feature_rgb_matrix.md
@@ -0,0 +1,141 @@
+# RGB Matrix Lighting
+
+There is basic support for addressable RGB matrix lighting with the I2C IS31FL3731 RGB controller. To enable it, add this to your `rules.mk`:
+
+    RGB_MATRIX_ENABLE = yes
+
+Configure the hardware via your `config.h`:
+
+	// This is a 7-bit address, that gets left-shifted and bit 0
+	// set to 0 for write, 1 for read (as per I2C protocol)
+	// The address will vary depending on your wiring:
+	// 0b1110100 AD <-> GND
+	// 0b1110111 AD <-> VCC
+	// 0b1110101 AD <-> SCL
+	// 0b1110110 AD <-> SDA
+	#define DRIVER_ADDR_1 0b1110100
+	#define DRIVER_ADDR_2 0b1110110
+
+	#define DRIVER_COUNT 2
+	#define DRIVER_1_LED_TOTAL 25
+	#define DRIVER_2_LED_TOTAL 24
+	#define DRIVER_LED_TOTAL DRIVER_1_LED_TOTAL + DRIVER_2_LED_TOTAL
+
+Currently only 2 drivers are supported, but it would be trivial to support all 4 combinations.
+
+Define these arrays listing all the LEDs in your `<keyboard>.c`:
+
+	const is31_led g_is31_leds[DRIVER_LED_TOTAL] = {
+	/* Refer to IS31 manual for these locations
+	 *   driver
+	 *   |  R location
+	 *   |  |      G location
+	 *   |  |      |      B location
+	 *   |  |      |      | */
+	    {0, C1_3,  C2_3,  C3_3},
+	    ....
+	}
+
+Where `Cx_y` is the location of the LED in the matrix defined by [the datasheet](http://www.issi.com/WW/pdf/31FL3731.pdf). The `driver` is the index of the driver you defined in your `config.h` (`0` or `1` right now).
+
+	const rgb_led g_rgb_leds[DRIVER_LED_TOTAL] = {
+	/* {row | col << 4}
+	 *    |           {x=0..224, y=0..64}
+	 *    |              |               modifier
+	 *    |              |                 | */
+	    {{0|(0<<4)},   {20.36*0, 21.33*0}, 1},
+	    {{0|(1<<4)},   {20.36*1, 21.33*0}, 1},
+	    ....
+	}
+
+The format for the matrix position used in this array is `{row | (col << 4)}`. The `x` is between (inclusive) 0-224, and `y` is between (inclusive) 0-64. The easiest way to calculate these positions is:
+
+    x = 224 / ( NUMBER_OF_ROWS - 1 ) * ROW_POSITION
+    y = 64 / (NUMBER_OF_COLS - 1 ) * COL_POSITION
+
+Where all variables are decimels/floats.
+
+`modifier` is a boolean, whether or not a certain key is considered a modifier (used in some effects).
+
+## Keycodes
+
+All RGB keycodes are currently shared with the RGBLIGHT system:
+
+	* `RGB_TOG` - toggle
+	* `RGB_MOD` - cycle through modes
+	* `RGB_HUI` - increase hue
+	* `RGB_HUD` - decrease hue
+	* `RGB_SAI` - increase saturation
+	* `RGB_SAD` - decrease saturation
+	* `RGB_VAI` - increase value
+	* `RGB_VAD` - decrease value
+
+
+	* `RGB_MODE_*` keycodes will generally work, but are not currently mapped to the correct effects for the RGB Matrix system
+
+## RGB Matrix Effects
+
+These are the effects that are currently available:
+
+	enum rgb_matrix_effects {
+		RGB_MATRIX_SOLID_COLOR = 1,
+	    RGB_MATRIX_SOLID_REACTIVE,
+	    RGB_MATRIX_ALPHAS_MODS,
+	    RGB_MATRIX_DUAL_BEACON,
+	    RGB_MATRIX_GRADIENT_UP_DOWN,
+	    RGB_MATRIX_RAINDROPS,
+	    RGB_MATRIX_CYCLE_ALL,
+	    RGB_MATRIX_CYCLE_LEFT_RIGHT,
+	    RGB_MATRIX_CYCLE_UP_DOWN,
+	    RGB_MATRIX_RAINBOW_BEACON,
+	    RGB_MATRIX_RAINBOW_PINWHEELS,
+	    RGB_MATRIX_RAINBOW_MOVING_CHEVRON,
+	    RGB_MATRIX_JELLYBEAN_RAINDROPS,
+	#ifdef RGB_MATRIX_KEYPRESSES
+	    RGB_MATRIX_SPLASH,
+	    RGB_MATRIX_MULTISPLASH,
+	    RGB_MATRIX_SOLID_SPLASH,
+	    RGB_MATRIX_SOLID_MULTISPLASH,
+	#endif
+	    RGB_MATRIX_EFFECT_MAX
+	};
+
+## Custom layer effects
+
+Custom layer effects can be done by defining this in your `<keyboard>.c`:
+
+    void rgb_matrix_indicators_kb(void) {
+    	// rgb_matrix_set_color(index, red, green, blue);
+    }
+
+A similar function works in the keymap as `rgb_matrix_indicators_user`.
+
+## Additional `config.h` Options
+
+	#define RGB_MATRIX_KEYPRESSES // reacts to keypresses (will slow down matrix scan by a lot)
+	#define RGB_MATRIX_KEYRELEASES // reacts to keyreleases (not recommened)
+	#define RGB_DISABLE_AFTER_TIMEOUT 0 // number of ticks to wait until disabling effects
+	#define RGB_DISABLE_WHEN_USB_SUSPENDED false // turn off effects when suspended
+    #define RGB_MATRIX_SKIP_FRAMES 1 // number of frames to skip when displaying animations (0 is full effect)
+
+## EEPROM storage
+
+The EEPROM for it is currently shared with the RGBLIGHT system (it's generally assumed only one RGB would be used at a time), but could be configured to use its own 32bit address with:
+
+    #define EECONFIG_RGB_MATRIX (uint32_t *)16
+
+Where `16` is an unused index from `eeconfig.h`.
+
+## Suspended state
+
+To use the suspend feature, add this to your `<keyboard>.c`:
+
+	void suspend_power_down_kb(void)
+	{
+	    rgb_matrix_set_suspend_state(true);
+	}
+
+	void suspend_wakeup_init_kb(void)
+	{
+	    rgb_matrix_set_suspend_state(false);
+	}
diff --git a/drivers/avr/TWIlib.c b/drivers/avr/TWIlib.c
new file mode 100644
index 0000000000..b39e3054a5
--- /dev/null
+++ b/drivers/avr/TWIlib.c
@@ -0,0 +1,232 @@
+/*
+ * TWIlib.c
+ *
+ *  Created: 6/01/2014 10:41:33 PM
+ *  Author: Chris Herring
+ *  http://www.chrisherring.net/all/tutorial-interrupt-driven-twi-interface-for-avr-part1/
+ */ 
+
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include "TWIlib.h"
+#include "util/delay.h"
+
+void TWIInit()
+{
+	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()
+{
+	if ( (TWIInfo.mode == Ready) | (TWIInfo.mode == RepeatedStartSent) )
+	{
+		return 1;
+	}
+	else
+	{
+		return 0;
+	}
+}
+
+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);
+	}
+	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/drivers/avr/TWIlib.h b/drivers/avr/TWIlib.h
new file mode 100644
index 0000000000..23fd1f09aa
--- /dev/null
+++ b/drivers/avr/TWIlib.h
@@ -0,0 +1,82 @@
+/*
+ * TWIlib.h
+ *
+ * Created: 6/01/2014 10:38:42 PM
+ *  Author: Chris Herring
+ *  http://www.chrisherring.net/all/tutorial-interrupt-driven-twi-interface-for-avr-part1/
+ */ 
+
+
+#ifndef TWILIB_H_
+#define TWILIB_H_
+// TWI bit rate (was 100000)
+#define TWI_FREQ 400000
+// Get TWI status
+#define TWI_STATUS	(TWSR & 0xF8) 
+// Transmit buffer length
+#define TXMAXBUFLEN 20
+// Receive buffer length
+#define RXMAXBUFLEN 20
+// Global transmit buffer
+uint8_t TWITransmitBuffer[TXMAXBUFLEN];
+// 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)
+
+typedef enum {
+	Ready,
+	Initializing,
+	RepeatedStartSent,
+	MasterTransmitter,
+	MasterReceiver,
+	SlaceTransmitter,
+	SlaveReciever
+	} TWIMode;
+
+ typedef struct TWIInfoStruct{
+	TWIMode mode;
+	uint8_t errorCode;
+	uint8_t repStart;	
+	}TWIInfoStruct;
+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
+uint8_t TWITransmitData(void *const TXdata, uint8_t dataLen, uint8_t repStart);
+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/drivers/avr/is31fl3731.c b/drivers/avr/is31fl3731.c
new file mode 100644
index 0000000000..e5941cf41e
--- /dev/null
+++ b/drivers/avr/is31fl3731.c
@@ -0,0 +1,258 @@
+/* Copyright 2017 Jason Williams
+ * Copyright 2018 Jack Humbert
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * 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 "is31fl3731.h"
+#include <avr/interrupt.h>
+#include <avr/io.h>
+#include <util/delay.h>
+#include <string.h>
+#include "TWIlib.h"
+#include "progmem.h"
+
+// This is a 7-bit address, that gets left-shifted and bit 0
+// set to 0 for write, 1 for read (as per I2C protocol)
+// The address will vary depending on your wiring:
+// 0b1110100 AD <-> GND
+// 0b1110111 AD <-> VCC
+// 0b1110101 AD <-> SCL
+// 0b1110110 AD <-> SDA
+#define ISSI_ADDR_DEFAULT 0x74
+
+#define ISSI_REG_CONFIG  0x00
+#define ISSI_REG_CONFIG_PICTUREMODE 0x00
+#define ISSI_REG_CONFIG_AUTOPLAYMODE 0x08
+#define ISSI_REG_CONFIG_AUDIOPLAYMODE 0x18
+
+#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'
+
+// Transfer buffer for TWITransmitData()
+uint8_t g_twi_transfer_buffer[TXMAXBUFLEN];
+
+// These buffers match the IS31FL3731 PWM registers 0x24-0xB3.
+// Storing them like this is optimal for I2C transfers to the registers.
+// We could optimize this and take out the unused registers from these
+// buffers and the transfers in IS31FL3731_write_pwm_buffer() but it's
+// probably not worth the extra complexity.
+uint8_t g_pwm_buffer[DRIVER_COUNT][144];
+bool g_pwm_buffer_update_required = false;
+
+uint8_t g_led_control_registers[DRIVER_COUNT][18] = { { 0 }, { 0 } };
+bool g_led_control_registers_update_required = false;
+
+// This is the bit pattern in the LED control registers
+// (for matrix A, add one to register for matrix B)
+//
+//  reg -  b7  b6  b5  b4  b3  b2  b1  b0
+// 0x00 - R08,R07,R06,R05,R04,R03,R02,R01
+// 0x02 - G08,G07,G06,G05,G04,G03,G02,R00
+// 0x04 - B08,B07,B06,B05,B04,B03,G01,G00
+// 0x06 -  - , - , - , - , - ,B02,B01,B00
+// 0x08 -  - , - , - , - , - , - , - , -
+// 0x0A - B17,B16,B15, - , - , - , - , -
+// 0x0C - G17,G16,B14,B13,B12,B11,B10,B09
+// 0x0E - R17,G15,G14,G13,G12,G11,G10,G09
+// 0x10 - R16,R15,R14,R13,R12,R11,R10,R09
+
+
+void IS31FL3731_write_register( uint8_t addr, uint8_t reg, uint8_t data )
+{
+	g_twi_transfer_buffer[0] = (addr << 1) | 0x00;
+	g_twi_transfer_buffer[1] = reg;
+	g_twi_transfer_buffer[2] = data;
+
+	// Set the error code to have no relevant information
+	TWIInfo.errorCode = TWI_NO_RELEVANT_INFO;
+	// Continuously attempt to transmit data until a successful transmission occurs
+	//while ( TWIInfo.errorCode != 0xFF )
+	//{
+		TWITransmitData( g_twi_transfer_buffer, 3, 0 );
+	//}
+}
+
+void IS31FL3731_write_pwm_buffer( uint8_t addr, uint8_t *pwm_buffer )
+{
+	// assumes bank is already selected
+
+	// transmit PWM registers in 9 transfers of 16 bytes
+	// g_twi_transfer_buffer[] is 20 bytes
+
+	// set the I2C address
+	g_twi_transfer_buffer[0] = (addr << 1) | 0x00;
+
+	// iterate over the pwm_buffer contents at 16 byte intervals
+	for ( int i = 0; i < 144; i += 16 )
+	{
+		// set the first register, e.g. 0x24, 0x34, 0x44, etc.
+		g_twi_transfer_buffer[1] = 0x24 + i;
+		// copy the data from i to i+15
+		// device will auto-increment register for data after the first byte
+		// thus this sets registers 0x24-0x33, 0x34-0x43, etc. in one transfer
+		for ( int j = 0; j < 16; j++ )
+		{
+			g_twi_transfer_buffer[2 + j] = pwm_buffer[i + j];
+		}
+
+		// Set the error code to have no relevant information
+		TWIInfo.errorCode = TWI_NO_RELEVANT_INFO;
+		// Continuously attempt to transmit data until a successful transmission occurs
+		while ( TWIInfo.errorCode != 0xFF )
+		{
+			TWITransmitData( g_twi_transfer_buffer, 16 + 2, 0 );
+		}
+	}
+}
+
+void IS31FL3731_init( uint8_t addr )
+{
+	// In order to avoid the LEDs being driven with garbage data
+	// in the LED driver's PWM registers, first enable software shutdown,
+	// then set up the mode and other settings, clear the PWM registers,
+	// then disable software shutdown.
+
+	// select "function register" bank
+	IS31FL3731_write_register( addr, ISSI_COMMANDREGISTER, ISSI_BANK_FUNCTIONREG );
+
+	// enable software shutdown
+	IS31FL3731_write_register( addr, ISSI_REG_SHUTDOWN, 0x00 );
+	// this delay was copied from other drivers, might not be needed
+	_delay_ms( 10 );
+
+	// picture mode
+	IS31FL3731_write_register( addr, ISSI_REG_CONFIG, ISSI_REG_CONFIG_PICTUREMODE );
+	// display frame 0
+	IS31FL3731_write_register( addr, ISSI_REG_PICTUREFRAME, 0x00 );
+	// audio sync off
+	IS31FL3731_write_register( addr, ISSI_REG_AUDIOSYNC, 0x00 );
+
+	// select bank 0
+	IS31FL3731_write_register( addr, ISSI_COMMANDREGISTER, 0 );
+
+	// turn off all LEDs in the LED control register
+	for ( int i = 0x00; i <= 0x11; i++ )
+	{
+		IS31FL3731_write_register( addr, i, 0x00 );
+	}
+
+	// turn off all LEDs in the blink control register (not really needed)
+	for ( int i = 0x12; i <= 0x23; i++ )
+	{
+		IS31FL3731_write_register( addr, i, 0x00 );
+	}
+
+	// set PWM on all LEDs to 0
+	for ( int i = 0x24; i <= 0xB3; i++ )
+	{
+		IS31FL3731_write_register( addr, i, 0x00 );
+	}
+
+	// select "function register" bank
+	IS31FL3731_write_register( addr, ISSI_COMMANDREGISTER, ISSI_BANK_FUNCTIONREG );
+
+	// disable software shutdown
+	IS31FL3731_write_register( addr, ISSI_REG_SHUTDOWN, 0x01 );
+
+	// select bank 0 and leave it selected.
+	// most usage after initialization is just writing PWM buffers in bank 0
+	// as there's not much point in double-buffering
+	IS31FL3731_write_register( addr, ISSI_COMMANDREGISTER, 0 );
+}
+
+void IS31FL3731_set_color( int index, uint8_t red, uint8_t green, uint8_t blue )
+{
+	if ( index >= 0 && index < DRIVER_LED_TOTAL ) {
+		is31_led led = g_is31_leds[index];
+
+		// Subtract 0x24 to get the second index of g_pwm_buffer
+		g_pwm_buffer[led.driver][led.r - 0x24] = red;
+		g_pwm_buffer[led.driver][led.g - 0x24] = green;
+		g_pwm_buffer[led.driver][led.b - 0x24] = blue;
+		g_pwm_buffer_update_required = true;
+	}
+}
+
+void IS31FL3731_set_color_all( uint8_t red, uint8_t green, uint8_t blue )
+{
+	for ( int i = 0; i < DRIVER_LED_TOTAL; i++ )
+	{
+		IS31FL3731_set_color( i, red, green, blue );
+	}
+}
+
+void IS31FL3731_set_led_control_register( uint8_t index, bool red, bool green, bool blue )
+{
+	is31_led led = g_is31_leds[index];
+
+  uint8_t control_register_r = (led.r - 0x24) / 8;
+  uint8_t control_register_g = (led.g - 0x24) / 8;
+  uint8_t control_register_b = (led.b - 0x24) / 8;
+  uint8_t bit_r = (led.r - 0x24) % 8;
+  uint8_t bit_g = (led.g - 0x24) % 8;
+  uint8_t bit_b = (led.b - 0x24) % 8;
+
+	if ( red ) {
+		g_led_control_registers[led.driver][control_register_r] |= (1 << bit_r);
+	} else {
+		g_led_control_registers[led.driver][control_register_r] &= ~(1 << bit_r);
+	}
+	if ( green ) {
+		g_led_control_registers[led.driver][control_register_g] |= (1 << bit_g);
+	} else {
+		g_led_control_registers[led.driver][control_register_g] &= ~(1 << bit_g);
+	}
+	if ( blue ) {
+		g_led_control_registers[led.driver][control_register_b] |= (1 << bit_b);
+	} else {
+		g_led_control_registers[led.driver][control_register_b] &= ~(1 << bit_b);
+	}
+
+	g_led_control_registers_update_required = true;
+
+
+}
+
+void IS31FL3731_update_pwm_buffers( uint8_t addr1, uint8_t addr2 )
+{
+	if ( g_pwm_buffer_update_required )
+	{
+		IS31FL3731_write_pwm_buffer( addr1, g_pwm_buffer[0] );
+		IS31FL3731_write_pwm_buffer( addr2, g_pwm_buffer[1] );
+	}
+	g_pwm_buffer_update_required = false;
+}
+
+void IS31FL3731_update_led_control_registers( uint8_t addr1, uint8_t addr2 )
+{
+	if ( g_led_control_registers_update_required )
+	{
+		for ( int i=0; i<18; i++ )
+		{
+			IS31FL3731_write_register(addr1, i, g_led_control_registers[0][i] );
+			IS31FL3731_write_register(addr2, i, g_led_control_registers[1][i] );
+		}
+	}
+}
+
diff --git a/drivers/avr/is31fl3731.h b/drivers/avr/is31fl3731.h
new file mode 100644
index 0000000000..3d30fc67b7
--- /dev/null
+++ b/drivers/avr/is31fl3731.h
@@ -0,0 +1,214 @@
+/* Copyright 2017 Jason Williams
+ * Copyright 2018 Jack Humbert
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#ifndef IS31FL3731_DRIVER_H
+#define IS31FL3731_DRIVER_H
+
+#include <stdint.h>
+#include <stdbool.h>
+
+typedef struct is31_led {
+	uint8_t driver:2;
+  uint8_t r;
+  uint8_t g;
+  uint8_t b;
+} __attribute__((packed)) is31_led;
+
+extern const is31_led g_is31_leds[DRIVER_LED_TOTAL];
+
+void IS31FL3731_init( uint8_t addr );
+void IS31FL3731_write_register( uint8_t addr, uint8_t reg, uint8_t data );
+void IS31FL3731_write_pwm_buffer( uint8_t addr, uint8_t *pwm_buffer );
+
+void IS31FL3731_set_color( int index, uint8_t red, uint8_t green, uint8_t blue );
+void IS31FL3731_set_color_all( uint8_t red, uint8_t green, uint8_t blue );
+
+void IS31FL3731_set_led_control_register( uint8_t index, bool red, bool green, bool blue );
+
+// This should not be called from an interrupt
+// (eg. from a timer interrupt).
+// Call this while idle (in between matrix scans).
+// If the buffer is dirty, it will update the driver with the buffer.
+void IS31FL3731_update_pwm_buffers( uint8_t addr1, uint8_t addr2 );
+void IS31FL3731_update_led_control_registers( uint8_t addr1, uint8_t addr2 );
+
+#define C1_1  0x24
+#define C1_2  0x25
+#define C1_3  0x26
+#define C1_4  0x27
+#define C1_5  0x28
+#define C1_6  0x29
+#define C1_7  0x2A
+#define C1_8  0x2B
+
+#define C1_9  0x2C
+#define C1_10 0x2D
+#define C1_11 0x2E
+#define C1_12 0x2F
+#define C1_13 0x30
+#define C1_14 0x31
+#define C1_15 0x32
+#define C1_16 0x33
+
+#define C2_1  0x34
+#define C2_2  0x35
+#define C2_3  0x36
+#define C2_4  0x37
+#define C2_5  0x38
+#define C2_6  0x39
+#define C2_7  0x3A
+#define C2_8  0x3B
+
+#define C2_9  0x3C
+#define C2_10 0x3D
+#define C2_11 0x3E
+#define C2_12 0x3F
+#define C2_13 0x40
+#define C2_14 0x41
+#define C2_15 0x42
+#define C2_16 0x43
+
+#define C3_1  0x44
+#define C3_2  0x45
+#define C3_3  0x46
+#define C3_4  0x47
+#define C3_5  0x48
+#define C3_6  0x49
+#define C3_7  0x4A
+#define C3_8  0x4B
+
+#define C3_9  0x4C
+#define C3_10 0x4D
+#define C3_11 0x4E
+#define C3_12 0x4F
+#define C3_13 0x50
+#define C3_14 0x51
+#define C3_15 0x52
+#define C3_16 0x53
+
+#define C4_1  0x54
+#define C4_2  0x55
+#define C4_3  0x56
+#define C4_4  0x57
+#define C4_5  0x58
+#define C4_6  0x59
+#define C4_7  0x5A
+#define C4_8  0x5B
+
+#define C4_9  0x5C
+#define C4_10 0x5D
+#define C4_11 0x5E
+#define C4_12 0x5F
+#define C4_13 0x60
+#define C4_14 0x61
+#define C4_15 0x62
+#define C4_16 0x63
+
+#define C5_1  0x64
+#define C5_2  0x65
+#define C5_3  0x66
+#define C5_4  0x67
+#define C5_5  0x68
+#define C5_6  0x69
+#define C5_7  0x6A
+#define C5_8  0x6B
+
+#define C5_9  0x6C
+#define C5_10 0x6D
+#define C5_11 0x6E
+#define C5_12 0x6F
+#define C5_13 0x70
+#define C5_14 0x71
+#define C5_15 0x72
+#define C5_16 0x73
+
+#define C6_1  0x74
+#define C6_2  0x75
+#define C6_3  0x76
+#define C6_4  0x77
+#define C6_5  0x78
+#define C6_6  0x79
+#define C6_7  0x7A
+#define C6_8  0x7B
+
+#define C6_9  0x7C
+#define C6_10 0x7D
+#define C6_11 0x7E
+#define C6_12 0x7F
+#define C6_13 0x80
+#define C6_14 0x81
+#define C6_15 0x82
+#define C6_16 0x83
+
+#define C7_1  0x84
+#define C7_2  0x85
+#define C7_3  0x86
+#define C7_4  0x87
+#define C7_5  0x88
+#define C7_6  0x89
+#define C7_7  0x8A
+#define C7_8  0x8B
+
+#define C7_9  0x8C
+#define C7_10 0x8D
+#define C7_11 0x8E
+#define C7_12 0x8F
+#define C7_13 0x90
+#define C7_14 0x91
+#define C7_15 0x92
+#define C7_16 0x93
+
+#define C8_1  0x94
+#define C8_2  0x95
+#define C8_3  0x96
+#define C8_4  0x97
+#define C8_5  0x98
+#define C8_6  0x99
+#define C8_7  0x9A
+#define C8_8  0x9B
+
+#define C8_9  0x9C
+#define C8_10 0x9D
+#define C8_11 0x9E
+#define C8_12 0x9F
+#define C8_13 0xA0
+#define C8_14 0xA1
+#define C8_15 0xA2
+#define C8_16 0xA3
+
+#define C9_1  0xA4
+#define C9_2  0xA5
+#define C9_3  0xA6
+#define C9_4  0xA7
+#define C9_5  0xA8
+#define C9_6  0xA9
+#define C9_7  0xAA
+#define C9_8  0xAB
+
+#define C9_9  0xAC
+#define C9_10 0xAD
+#define C9_11 0xAE
+#define C9_12 0xAF
+#define C9_13 0xB0
+#define C9_14 0xB1
+#define C9_15 0xB2
+#define C9_16 0xB3
+
+
+
+#endif // IS31FL3731_DRIVER_H
diff --git a/keyboards/planck/light/config.h b/keyboards/planck/light/config.h
index 71c924904d..17c015ed0f 100644
--- a/keyboards/planck/light/config.h
+++ b/keyboards/planck/light/config.h
@@ -24,5 +24,22 @@
 
 #define NO_USB_STARTUP_CHECK
 
+#define PLANCK_MIT_LAYOUT
 
-#endif
\ No newline at end of file
+// This is a 7-bit address, that gets left-shifted and bit 0
+// set to 0 for write, 1 for read (as per I2C protocol)
+// The address will vary depending on your wiring:
+// 0b1110100 AD <-> GND
+// 0b1110111 AD <-> VCC
+// 0b1110101 AD <-> SCL
+// 0b1110110 AD <-> SDA
+#define DRIVER_ADDR_1 0b1110100
+#define DRIVER_ADDR_2 0b1110110
+
+#define DRIVER_COUNT 2
+#define DRIVER_1_LED_TOTAL 25
+#define DRIVER_2_LED_TOTAL 24
+#define DRIVER_LED_TOTAL DRIVER_1_LED_TOTAL + DRIVER_2_LED_TOTAL
+
+
+#endif
diff --git a/keyboards/planck/light/light.c b/keyboards/planck/light/light.c
index 96261616c3..cef57c5e69 100644
--- a/keyboards/planck/light/light.c
+++ b/keyboards/planck/light/light.c
@@ -1,5 +1,4 @@
-/* Copyright 2017 Jason Williams
- * Copyright 2017 Jack Humbert
+/* Copyright 2017 Jack Humbert
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -17,6 +16,127 @@
 
 #include "light.h"
 
+const is31_led g_is31_leds[DRIVER_LED_TOTAL] = {
+/* Refer to IS31 manual for these locations
+ *   driver
+ *   |  R location
+ *   |  |      G location
+ *   |  |      |      B location
+ *   |  |      |      | */
+    {0, C1_3,  C2_3,  C3_3},
+    {0, C1_4,  C2_4,  C3_4},
+    {0, C1_5,  C2_5,  C3_5},
+    {0, C1_11, C2_11, C3_11},
+    {0, C1_12, C2_12, C3_12},
+    {0, C1_13, C2_13, C3_13},
+    {1, C1_3,  C2_3,  C3_3},
+    {1, C1_4,  C2_4,  C3_4},
+    {1, C1_5,  C2_5,  C3_5},
+    {1, C1_11, C2_11, C3_11},
+    {1, C1_12, C2_12, C3_12},
+    {1, C1_13, C2_13, C3_13},
+
+    {0, C1_6,  C2_6,  C3_6},
+    {0, C1_7,  C2_7,  C3_7},
+    {0, C1_8,  C2_8,  C3_8},
+    {0, C1_14, C2_14, C3_14},
+    {0, C1_15, C2_15, C3_15},
+    {0, C1_16, C2_16, C3_16},
+    {1, C1_6,  C2_6,  C3_6},
+    {1, C1_7,  C2_7,  C3_7},
+    {1, C1_8,  C2_8,  C3_8},
+    {1, C1_14, C2_14, C3_14},
+    {1, C1_15, C2_15, C3_15},
+    {1, C1_16, C2_16, C3_16},
+
+    {0, C9_1,  C8_1,  C7_1},
+    {0, C9_2,  C8_2,  C7_2},
+    {0, C9_3,  C8_3,  C7_3},
+    {0, C9_9,  C8_9,  C7_9},
+    {0, C9_10, C8_10, C7_10},
+    {0, C9_11, C8_11, C7_11},
+    {1, C9_1,  C8_1,  C7_1},
+    {1, C9_2,  C8_2,  C7_2},
+    {1, C9_3,  C8_3,  C7_3},
+    {1, C9_9,  C8_9,  C7_9},
+    {1, C9_10, C8_10, C7_10},
+    {1, C9_11, C8_11, C7_11},
+
+    {0, C9_4,  C8_4,  C7_4},
+    {0, C9_5,  C8_5,  C7_5},
+    {0, C9_6,  C8_6,  C7_6},
+    {0, C9_12, C8_12, C7_12},
+    {0, C9_13, C8_13, C7_13},
+    {0, C9_14, C8_14, C7_14},
+    {0, C9_15, C8_15, C6_14}, // middle 2u switch
+    {1, C9_4,  C8_4,  C7_4},
+    {1, C9_5,  C8_5,  C7_5},
+    {1, C9_6,  C8_6,  C7_6},
+    {1, C9_12, C8_12, C7_12},
+    {1, C9_13, C8_13, C7_13},
+    {1, C9_14, C8_14, C7_14}
+};
+
+const rgb_led g_rgb_leds[DRIVER_LED_TOTAL] = {
+
+    /*{row | col << 4}
+      |             {x=0..224, y=0..64}
+      |              |                 modifier
+      |              |                 | */
+    {{0|(0<<4)},   {20.36*0, 21.33*0}, 1},
+    {{0|(1<<4)},   {20.36*1, 21.33*0}, 0},
+    {{0|(2<<4)},   {20.36*2, 21.33*0}, 0},
+    {{0|(3<<4)},   {20.36*3, 21.33*0}, 0},
+    {{0|(4<<4)},   {20.36*4, 21.33*0}, 0},
+    {{0|(5<<4)},   {20.36*5, 21.33*0}, 0},
+    {{0|(6<<4)},   {20.36*6, 21.33*0}, 0},
+    {{0|(7<<4)},   {20.36*7, 21.33*0}, 0},
+    {{0|(8<<4)},   {20.36*8, 21.33*0}, 0},
+    {{0|(9<<4)},   {20.36*9, 21.33*0}, 0},
+    {{0|(10<<4)},  {20.36*10,21.33*0}, 0},
+    {{0|(11<<4)},  {20.36*11,21.33*0}, 1},
+
+    {{1|(0<<4)},   {20.36*0, 21.33*1}, 1},
+    {{1|(1<<4)},   {20.36*1, 21.33*1}, 0},
+    {{1|(2<<4)},   {20.36*2, 21.33*1}, 0},
+    {{1|(3<<4)},   {20.36*3, 21.33*1}, 0},
+    {{1|(4<<4)},   {20.36*4, 21.33*1}, 0},
+    {{1|(5<<4)},   {20.36*5, 21.33*1}, 0},
+    {{1|(6<<4)},   {20.36*6, 21.33*1}, 0},
+    {{1|(7<<4)},   {20.36*7, 21.33*1}, 0},
+    {{1|(8<<4)},   {20.36*8, 21.33*1}, 0},
+    {{1|(9<<4)},   {20.36*9, 21.33*1}, 0},
+    {{1|(10<<4)},  {20.36*10,21.33*1}, 0},
+    {{1|(11<<4)},  {20.36*11,21.33*1}, 1},
+
+    {{2|(0<<4)},   {20.36*0, 21.33*2}, 1},
+    {{2|(1<<4)},   {20.36*1, 21.33*2}, 0},
+    {{2|(2<<4)},   {20.36*2, 21.33*2}, 0},
+    {{2|(3<<4)},   {20.36*3, 21.33*2}, 0},
+    {{2|(4<<4)},   {20.36*4, 21.33*2}, 0},
+    {{2|(5<<4)},   {20.36*5, 21.33*2}, 0},
+    {{2|(6<<4)},   {20.36*6, 21.33*2}, 0},
+    {{2|(7<<4)},   {20.36*7, 21.33*2}, 0},
+    {{2|(8<<4)},   {20.36*8, 21.33*2}, 0},
+    {{2|(9<<4)},   {20.36*9, 21.33*2}, 0},
+    {{2|(10<<4)},  {20.36*10,21.33*2}, 0},
+    {{2|(11<<4)},  {20.36*11,21.33*2}, 1},
+
+    {{3|(0<<4)},   {20.36*0, 21.33*3}, 1},
+    {{3|(1<<4)},   {20.36*1, 21.33*3}, 1},
+    {{3|(2<<4)},   {20.36*2, 21.33*3}, 1},
+    {{3|(3<<4)},   {20.36*3, 21.33*3}, 1},
+    {{3|(4<<4)},   {20.36*4, 21.33*3}, 1},
+    {{3|(5<<4)},   {20.36*5, 21.33*3}, 0},
+    {{3|(5<<4)},   {20.36*5.5,21.33*3}, 0},
+    {{3|(6<<4)},   {20.36*6, 21.33*3}, 0},
+    {{3|(7<<4)},   {20.36*7, 21.33*3}, 1},
+    {{3|(8<<4)},   {20.36*8, 21.33*3}, 1},
+    {{3|(9<<4)},   {20.36*9, 21.33*3}, 1},
+    {{3|(10<<4)},  {20.36*10,21.33*3}, 1},
+    {{3|(11<<4)},  {20.36*11,21.33*3}, 1}
+};
+
 void matrix_init_kb(void) {
 
     // Turn status LED on
@@ -27,13 +147,22 @@ void matrix_init_kb(void) {
 }
 
 bool process_record_kb(uint16_t keycode, keyrecord_t *record)
-{   
+{
     return process_record_user(keycode, record);
 }
 
-uint16_t backlight_task_counter = 0;
-
 void matrix_scan_kb(void)
 {
     matrix_scan_user();
-}
\ No newline at end of file
+}
+
+void suspend_power_down_kb(void)
+{
+    rgb_matrix_set_suspend_state(true);
+}
+
+void suspend_wakeup_init_kb(void)
+{
+    rgb_matrix_set_suspend_state(false);
+}
+
diff --git a/keyboards/planck/light/light.h b/keyboards/planck/light/light.h
index 111f198654..a395f30e88 100644
--- a/keyboards/planck/light/light.h
+++ b/keyboards/planck/light/light.h
@@ -1,5 +1,4 @@
-/* Copyright 2017 Jason Williams
- * Copyright 2017 Jack Humbert
+/* Copyright 2017 Jack Humbert
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -19,5 +18,6 @@
 #define LIGHT_H
 
 #include "planck.h"
+#include "rgb_matrix.h"
 
 #endif
\ No newline at end of file
diff --git a/keyboards/planck/light/rules.mk b/keyboards/planck/light/rules.mk
index 3d7006b526..c10b8fd1da 100644
--- a/keyboards/planck/light/rules.mk
+++ b/keyboards/planck/light/rules.mk
@@ -1,7 +1,5 @@
 MIDI_ENABLE = yes
 AUDIO_ENABLE = yes           # Audio output on port C6
-MOUSEKEY_ENABLE = no       # Mouse keys(+4700)
-NKRO_ENABLE = yes            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-BACKLIGHT_ENABLE = yes      # Enable keyboard backlight functionality
+RGB_MATRIX_ENABLE = yes
 
 MCU = at90usb1286
\ No newline at end of file
diff --git a/keyboards/planck/rules.mk b/keyboards/planck/rules.mk
index 511c06d708..e194dcd511 100644
--- a/keyboards/planck/rules.mk
+++ b/keyboards/planck/rules.mk
@@ -48,7 +48,7 @@ ifeq ($(strip $(KEYBOARD)), planck/rev5)
     BOOTLOADER = qmk-dfu
 endif
 ifeq ($(strip $(KEYBOARD)), planck/light)
-    BOOTLOADER = qmk-dfu
+    BOOTLOADER = atmel-dfu
 endif
 
 # Interrupt driven control endpoint task(+60)
diff --git a/quantum/color.c b/quantum/color.c
new file mode 100644
index 0000000000..8ede053e71
--- /dev/null
+++ b/quantum/color.c
@@ -0,0 +1,87 @@
+/* Copyright 2017 Jason Williams
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * 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 "color.h"
+#include "led_tables.h"
+#include "progmem.h"
+
+RGB hsv_to_rgb( HSV hsv )
+{
+	RGB rgb;
+	uint8_t region, p, q, t;
+	uint16_t h, s, v, remainder;
+
+	if ( hsv.s == 0 )
+	{
+		rgb.r = hsv.v;
+		rgb.g = hsv.v;
+		rgb.b = hsv.v;
+		return rgb;
+	}
+
+	h = hsv.h;
+	s = hsv.s;
+	v = hsv.v;
+
+	region = h / 43;
+	remainder = (h - (region * 43)) * 6;
+
+	p = (v * (255 - s)) >> 8;
+	q = (v * (255 - ((s * remainder) >> 8))) >> 8;
+	t = (v * (255 - ((s * (255 - remainder)) >> 8))) >> 8;
+
+	switch ( region )
+	{
+		case 0:
+			rgb.r = v;
+			rgb.g = t;
+			rgb.b = p;
+			break;
+		case 1:
+			rgb.r = q;
+			rgb.g = v;
+			rgb.b = p;
+			break;
+		case 2:
+			rgb.r = p;
+			rgb.g = v;
+			rgb.b = t;
+			break;
+		case 3:
+			rgb.r = p;
+			rgb.g = q;
+			rgb.b = v;
+			break;
+		case 4:
+			rgb.r = t;
+			rgb.g = p;
+			rgb.b = v;
+			break;
+		default:
+			rgb.r = v;
+			rgb.g = p;
+			rgb.b = q;
+			break;
+	}
+
+	rgb.r = pgm_read_byte( &CIE1931_CURVE[rgb.r] );
+	rgb.g = pgm_read_byte( &CIE1931_CURVE[rgb.g] );
+	rgb.b = pgm_read_byte( &CIE1931_CURVE[rgb.b] );
+
+	return rgb;
+}
+
diff --git a/quantum/color.h b/quantum/color.h
new file mode 100644
index 0000000000..9d51d45adb
--- /dev/null
+++ b/quantum/color.h
@@ -0,0 +1,55 @@
+/* Copyright 2017 Jason Williams
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#ifndef COLOR_H
+#define COLOR_H
+
+#include <stdint.h>
+#include <stdbool.h>
+
+
+#if defined(__GNUC__)
+#define PACKED __attribute__ ((__packed__))
+#else
+#define PACKED
+#endif
+
+#if defined(_MSC_VER)
+#pragma pack( push, 1 )
+#endif
+
+typedef struct PACKED
+{
+	uint8_t r;
+	uint8_t g;
+	uint8_t b;
+} RGB;
+
+typedef struct PACKED
+{
+	uint8_t h;
+	uint8_t s;
+	uint8_t v;
+} HSV;
+
+#if defined(_MSC_VER)
+#pragma pack( pop )
+#endif
+
+RGB hsv_to_rgb( HSV hsv );
+
+#endif // COLOR_H
diff --git a/quantum/quantum.c b/quantum/quantum.c
index 2662e5ef1c..e1bc8b242e 100644
--- a/quantum/quantum.c
+++ b/quantum/quantum.c
@@ -230,6 +230,9 @@ bool process_record_quantum(keyrecord_t *record) {
       process_clicky(keycode, record) &&
   #endif //AUDIO_CLICKY
     process_record_kb(keycode, record) &&
+  #if defined(RGB_MATRIX_ENABLE) && defined(RGB_MATRIX_KEYPRESSES)
+    process_rgb_matrix(keycode, record) &&
+  #endif
   #if defined(MIDI_ENABLE) && defined(MIDI_ADVANCED)
     process_midi(keycode, record) &&
   #endif
@@ -307,7 +310,7 @@ bool process_record_quantum(keyrecord_t *record) {
     }
     return false;
   #endif
-  #ifdef RGBLIGHT_ENABLE
+  #if defined(RGBLIGHT_ENABLE) || defined(RGB_MATRIX_ENABLE)
   case RGB_TOG:
     if (record->event.pressed) {
       rgblight_toggle();
@@ -835,9 +838,18 @@ void matrix_init_quantum() {
   #ifdef AUDIO_ENABLE
     audio_init();
   #endif
+  #ifdef RGB_MATRIX_ENABLE
+    rgb_matrix_init_drivers();
+  #endif
   matrix_init_kb();
 }
 
+uint8_t rgb_matrix_task_counter = 0;
+
+#ifndef RGB_MATRIX_SKIP_FRAMES
+  #define RGB_MATRIX_SKIP_FRAMES 1
+#endif
+
 void matrix_scan_quantum() {
   #if defined(AUDIO_ENABLE)
     matrix_scan_music();
@@ -855,9 +867,16 @@ void matrix_scan_quantum() {
     backlight_task();
   #endif
 
+  #ifdef RGB_MATRIX_ENABLE
+    rgb_matrix_task();
+    if (rgb_matrix_task_counter == 0) {
+      rgb_matrix_update_pwm_buffers();
+    }
+    rgb_matrix_task_counter = ((rgb_matrix_task_counter + 1) % (RGB_MATRIX_SKIP_FRAMES + 1));
+  #endif
+
   matrix_scan_kb();
 }
-
 #if defined(BACKLIGHT_ENABLE) && defined(BACKLIGHT_PIN)
 
 static const uint8_t backlight_pin = BACKLIGHT_PIN;
diff --git a/quantum/quantum.h b/quantum/quantum.h
index 195f578de9..2958a0abd0 100644
--- a/quantum/quantum.h
+++ b/quantum/quantum.h
@@ -27,9 +27,15 @@
 #ifdef BACKLIGHT_ENABLE
     #include "backlight.h"
 #endif
+#if !defined(RGBLIGHT_ENABLE) && !defined(RGB_MATRIX_ENABLE) 
+	#include "rgb.h"
+#endif
 #ifdef RGBLIGHT_ENABLE
   #include "rgblight.h"
 #endif
+#ifdef RGB_MATRIX_ENABLE
+	#include "rgb_matrix.h"
+#endif
 #include "action_layer.h"
 #include "eeconfig.h"
 #include <stddef.h>
diff --git a/quantum/rgb.h b/quantum/rgb.h
new file mode 100644
index 0000000000..fbdda293f4
--- /dev/null
+++ b/quantum/rgb.h
@@ -0,0 +1,47 @@
+/* Copyright 2017 Jack Humbert
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef RGB_H
+#define RGB_H
+
+__attribute__((weak))
+void rgblight_toggle(void) {};
+
+__attribute__((weak))
+void rgblight_step(void) {};
+
+__attribute__((weak))
+void rgblight_step_reverse(void) {};
+
+__attribute__((weak))
+void rgblight_increase_hue(void) {};
+
+__attribute__((weak))
+void rgblight_decrease_hue(void) {};
+
+__attribute__((weak))
+void rgblight_increase_sat(void) {};
+
+__attribute__((weak))
+void rgblight_decrease_sat(void) {};
+
+__attribute__((weak))
+void rgblight_increase_val(void) {};
+
+__attribute__((weak))
+void rgblight_decrease_val(void) {};
+
+#endif
\ No newline at end of file
diff --git a/quantum/rgb_matrix.c b/quantum/rgb_matrix.c
new file mode 100644
index 0000000000..6cb0478f71
--- /dev/null
+++ b/quantum/rgb_matrix.c
@@ -0,0 +1,873 @@
+/* Copyright 2017 Jason Williams
+ * Copyright 2017 Jack Humbert
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * 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 "rgb_matrix.h"
+#include <avr/io.h>
+#include "TWIlib.h"
+#include <util/delay.h>
+#include <avr/interrupt.h>
+#include "progmem.h"
+#include "config.h"
+#include "eeprom.h"
+#include "lufa.h"
+#include <math.h>
+
+rgb_config_t rgb_matrix_config;
+
+#ifndef RGB_DISABLE_AFTER_TIMEOUT
+    #define RGB_DISABLE_AFTER_TIMEOUT 0
+#endif
+
+#ifndef RGB_DISABLE_WHEN_USB_SUSPENDED
+    #define RGB_DISABLE_WHEN_USB_SUSPENDED false
+#endif
+
+#ifndef EECONFIG_RGB_MATRIX
+    #define EECONFIG_RGB_MATRIX EECONFIG_RGBLIGHT
+#endif
+
+bool g_suspend_state = false;
+
+// Global tick at 20 Hz
+uint32_t g_tick = 0;
+
+// Ticks since this key was last hit.
+uint8_t g_key_hit[DRIVER_LED_TOTAL];
+
+// Ticks since any key was last hit.
+uint32_t g_any_key_hit = 0;
+
+#ifndef PI
+#define PI 3.14159265
+#endif
+
+uint32_t eeconfig_read_rgb_matrix(void) {
+  return eeprom_read_dword(EECONFIG_RGB_MATRIX);
+}
+void eeconfig_update_rgb_matrix(uint32_t val) {
+  eeprom_update_dword(EECONFIG_RGB_MATRIX, val);
+}
+void eeconfig_update_rgb_matrix_default(void) {
+  dprintf("eeconfig_update_rgb_matrix_default\n");
+  rgb_matrix_config.enable = 1;
+  rgb_matrix_config.mode = RGB_MATRIX_CYCLE_LEFT_RIGHT;
+  rgb_matrix_config.hue = 0;
+  rgb_matrix_config.sat = 255;
+  rgb_matrix_config.val = 255;
+  eeconfig_update_rgb_matrix(rgb_matrix_config.raw);
+}
+void eeconfig_debug_rgb_matrix(void) {
+  dprintf("rgb_matrix_config eprom\n");
+  dprintf("rgb_matrix_config.enable = %d\n", rgb_matrix_config.enable);
+  dprintf("rgb_matrix_config.mode = %d\n", rgb_matrix_config.mode);
+  dprintf("rgb_matrix_config.hue = %d\n", rgb_matrix_config.hue);
+  dprintf("rgb_matrix_config.sat = %d\n", rgb_matrix_config.sat);
+  dprintf("rgb_matrix_config.val = %d\n", rgb_matrix_config.val);
+}
+
+// Last led hit
+#define LED_HITS_TO_REMEMBER 8
+uint8_t g_last_led_hit[LED_HITS_TO_REMEMBER] = {255};
+uint8_t g_last_led_count = 0;
+
+void map_row_column_to_led( uint8_t row, uint8_t column, uint8_t *led_i, uint8_t *led_count) {
+    rgb_led led;
+    *led_count = 0;
+
+    for (uint8_t i = 0; i < DRIVER_LED_TOTAL; i++) {
+        // map_index_to_led(i, &led);
+        led = g_rgb_leds[i];
+        if (row == led.matrix_co.row && column == led.matrix_co.col) {
+            led_i[*led_count] = i;
+            (*led_count)++;
+        }
+    }
+}
+
+
+void rgb_matrix_update_pwm_buffers(void) {
+    IS31FL3731_update_pwm_buffers( DRIVER_ADDR_1, DRIVER_ADDR_2 );
+    IS31FL3731_update_led_control_registers( DRIVER_ADDR_1, DRIVER_ADDR_2 );
+}
+
+void rgb_matrix_set_color( int index, uint8_t red, uint8_t green, uint8_t blue ) {
+    IS31FL3731_set_color( index, red, green, blue );
+}
+
+void rgb_matrix_set_color_all( uint8_t red, uint8_t green, uint8_t blue ) {
+    IS31FL3731_set_color_all( red, green, blue );
+}
+
+
+bool process_rgb_matrix(uint16_t keycode, keyrecord_t *record) {
+    if ( record->event.pressed ) {
+        uint8_t led[8], led_count;
+        map_row_column_to_led(record->event.key.row, record->event.key.col, led, &led_count);
+        if (led_count > 0) {
+            for (uint8_t i = LED_HITS_TO_REMEMBER; i > 1; i--) {
+                g_last_led_hit[i - 1] = g_last_led_hit[i - 2];
+            }
+            g_last_led_hit[0] = led[0];
+            g_last_led_count = MIN(LED_HITS_TO_REMEMBER, g_last_led_count + 1);
+        }
+        for(uint8_t i = 0; i < led_count; i++)
+            g_key_hit[led[i]] = 0;
+        g_any_key_hit = 0;
+    } else {
+        #ifdef RGB_MATRIX_KEYRELEASES
+        uint8_t led[8], led_count;
+        map_row_column_to_led(record->event.key.row, record->event.key.col, led, &led_count);
+        for(uint8_t i = 0; i < led_count; i++)
+            g_key_hit[led[i]] = 255;
+
+        g_any_key_hit = 255;
+        #endif
+    }
+    return true;
+}
+
+void rgb_matrix_set_suspend_state(bool state) {
+    g_suspend_state = state;
+}
+
+void rgb_matrix_test(void) {
+    // Mask out bits 4 and 5
+    // This 2-bit value will stay the same for 16 ticks.
+    switch ( (g_tick & 0x30) >> 4 )
+    {
+        case 0:
+        {
+            rgb_matrix_set_color_all( 20, 0, 0 );
+            break;
+        }
+        case 1:
+        {
+            rgb_matrix_set_color_all( 0, 20, 0 );
+            break;
+        }
+        case 2:
+        {
+            rgb_matrix_set_color_all( 0, 0, 20 );
+            break;
+        }
+        case 3:
+        {
+            rgb_matrix_set_color_all( 20, 20, 20 );
+            break;
+        }
+    }
+}
+
+// This tests the LEDs
+// Note that it will change the LED control registers
+// in the LED drivers, and leave them in an invalid
+// state for other backlight effects.
+// ONLY USE THIS FOR TESTING LEDS!
+void rgb_matrix_single_LED_test(void) {
+    static uint8_t color = 0; // 0,1,2 for R,G,B
+    static uint8_t row = 0;
+    static uint8_t column = 0;
+
+    static uint8_t tick = 0;
+    tick++;
+
+    if ( tick > 2 )
+    {
+        tick = 0;
+        column++;
+    }
+    if ( column > MATRIX_COLS )
+    {
+        column = 0;
+        row++;
+    }
+    if ( row > MATRIX_ROWS )
+    {
+        row = 0;
+        color++;
+    }
+    if ( color > 2 )
+    {
+        color = 0;
+    }
+
+    uint8_t led[8], led_count;
+    map_row_column_to_led(row,column,led,&led_count);
+    for(uint8_t i = 0; i < led_count; i++) {
+        rgb_matrix_set_color_all( 40, 40, 40 );
+        rgb_matrix_test_led( led[i], color==0, color==1, color==2 );
+    }
+}
+
+// All LEDs off
+void rgb_matrix_all_off(void) { 
+    rgb_matrix_set_color_all( 0, 0, 0 );
+}
+
+// Solid color
+void rgb_matrix_solid_color(void) {
+    HSV hsv = { .h = rgb_matrix_config.hue, .s = rgb_matrix_config.sat, .v = rgb_matrix_config.val };
+    RGB rgb = hsv_to_rgb( hsv );
+    rgb_matrix_set_color_all( rgb.r, rgb.g, rgb.b );
+}
+
+void rgb_matrix_solid_reactive(void) {
+	// Relies on hue being 8-bit and wrapping
+	for ( int i=0; i<DRIVER_LED_TOTAL; i++ )
+	{
+		uint16_t offset2 = g_key_hit[i]<<2;
+		offset2 = (offset2<=130) ? (130-offset2) : 0;
+
+		HSV hsv = { .h = rgb_matrix_config.hue+offset2, .s = 255, .v = rgb_matrix_config.val };
+		RGB rgb = hsv_to_rgb( hsv );
+		rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
+	}
+}
+
+// alphas = color1, mods = color2
+void rgb_matrix_alphas_mods(void) {
+ 
+    RGB rgb1 = hsv_to_rgb( (HSV){ .h = rgb_matrix_config.hue, .s = rgb_matrix_config.sat, .v = rgb_matrix_config.val } );
+    RGB rgb2 = hsv_to_rgb( (HSV){ .h = (rgb_matrix_config.hue + 180) % 360, .s = rgb_matrix_config.sat, .v = rgb_matrix_config.val } );
+
+    rgb_led led;
+    for (int i = 0; i < DRIVER_LED_TOTAL; i++) {
+        led = g_rgb_leds[i];
+        if ( led.matrix_co.raw < 0xFF ) {
+            if ( led.modifier )
+            {
+                rgb_matrix_set_color( i, rgb2.r, rgb2.g, rgb2.b );
+            }
+            else
+            {
+                rgb_matrix_set_color( i, rgb1.r, rgb1.g, rgb1.b );
+            }
+        }
+    }
+}
+
+void rgb_matrix_gradient_up_down(void) {
+    int16_t h1 = rgb_matrix_config.hue;
+    int16_t h2 = (rgb_matrix_config.hue + 180) % 360;
+    int16_t deltaH = h2 - h1;
+
+    // Take the shortest path between hues
+    if ( deltaH > 127 )
+    {
+        deltaH -= 256;
+    }
+    else if ( deltaH < -127 )
+    {
+        deltaH += 256;
+    }
+    // Divide delta by 4, this gives the delta per row
+    deltaH /= 4;
+
+    int16_t s1 = rgb_matrix_config.sat;
+    int16_t s2 = rgb_matrix_config.hue;
+    int16_t deltaS = ( s2 - s1 ) / 4;
+
+    HSV hsv = { .h = 0, .s = 255, .v = rgb_matrix_config.val };
+    RGB rgb;
+    Point point;
+    for ( int i=0; i<DRIVER_LED_TOTAL; i++ )
+    {
+        // map_led_to_point( i, &point );
+        point = g_rgb_leds[i].point;
+        // The y range will be 0..64, map this to 0..4
+        uint8_t y = (point.y>>4);
+        // Relies on hue being 8-bit and wrapping
+        hsv.h = rgb_matrix_config.hue + ( deltaH * y );
+        hsv.s = rgb_matrix_config.sat + ( deltaS * y );
+        rgb = hsv_to_rgb( hsv );
+        rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
+    }
+}
+
+void rgb_matrix_raindrops(bool initialize) {
+    int16_t h1 = rgb_matrix_config.hue;
+    int16_t h2 = (rgb_matrix_config.hue + 180) % 360;
+    int16_t deltaH = h2 - h1;
+    deltaH /= 4;
+
+    // Take the shortest path between hues
+    if ( deltaH > 127 )
+    {
+        deltaH -= 256;
+    }
+    else if ( deltaH < -127 )
+    {
+        deltaH += 256;
+    }
+
+    int16_t s1 = rgb_matrix_config.sat;
+    int16_t s2 = rgb_matrix_config.sat;
+    int16_t deltaS = ( s2 - s1 ) / 4;
+
+    HSV hsv;
+    RGB rgb;
+
+    // Change one LED every tick
+    uint8_t led_to_change = ( g_tick & 0x000 ) == 0 ? rand() % DRIVER_LED_TOTAL : 255;
+
+    for ( int i=0; i<DRIVER_LED_TOTAL; i++ )
+    {
+        // If initialize, all get set to random colors
+        // If not, all but one will stay the same as before.
+        if ( initialize || i == led_to_change )
+        {
+            hsv.h = h1 + ( deltaH * ( rand() & 0x03 ) );
+            hsv.s = s1 + ( deltaS * ( rand() & 0x03 ) );
+            // Override brightness with global brightness control
+            hsv.v = rgb_matrix_config.val;
+
+            rgb = hsv_to_rgb( hsv );
+            rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
+        }
+    }
+}
+
+void rgb_matrix_cycle_all(void) {
+    uint8_t offset = g_tick & 0xFF;
+
+    rgb_led led;
+
+    // Relies on hue being 8-bit and wrapping
+    for ( int i=0; i<DRIVER_LED_TOTAL; i++ )
+    {
+        // map_index_to_led(i, &led);
+        led = g_rgb_leds[i];
+        if (led.matrix_co.raw < 0xFF) {
+            uint16_t offset2 = g_key_hit[i]<<2;
+            offset2 = (offset2<=63) ? (63-offset2) : 0;
+
+            HSV hsv = { .h = offset+offset2, .s = 255, .v = rgb_matrix_config.val };
+            RGB rgb = hsv_to_rgb( hsv );
+            rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
+        }
+    }
+}
+
+void rgb_matrix_cycle_left_right(void) {
+    uint8_t offset = g_tick & 0xFF;
+    HSV hsv = { .h = 0, .s = 255, .v = rgb_matrix_config.val };
+    RGB rgb;
+    Point point;
+    rgb_led led;
+    for ( int i=0; i<DRIVER_LED_TOTAL; i++ )
+    {
+        // map_index_to_led(i, &led);
+        led = g_rgb_leds[i];
+        if (led.matrix_co.raw < 0xFF) {
+            uint16_t offset2 = g_key_hit[i]<<2;
+            offset2 = (offset2<=63) ? (63-offset2) : 0;
+
+            // map_led_to_point( i, &point );
+            point = g_rgb_leds[i].point;
+            // Relies on hue being 8-bit and wrapping
+            hsv.h = point.x + offset + offset2;
+            rgb = hsv_to_rgb( hsv );
+            rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
+        }
+    }
+}
+
+void rgb_matrix_cycle_up_down(void) {
+    uint8_t offset = g_tick & 0xFF;
+    HSV hsv = { .h = 0, .s = 255, .v = rgb_matrix_config.val };
+    RGB rgb;
+    Point point;
+    rgb_led led;
+    for ( int i=0; i<DRIVER_LED_TOTAL; i++ )
+    {
+        // map_index_to_led(i, &led);
+        led = g_rgb_leds[i];
+        if (led.matrix_co.raw < 0xFF) {
+            uint16_t offset2 = g_key_hit[i]<<2;
+            offset2 = (offset2<=63) ? (63-offset2) : 0;
+
+            // map_led_to_point( i, &point );
+            point = g_rgb_leds[i].point;
+            // Relies on hue being 8-bit and wrapping
+            hsv.h = point.y + offset + offset2;
+            rgb = hsv_to_rgb( hsv );
+            rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
+        }
+    }
+}
+
+
+void rgb_matrix_dual_beacon(void) {
+    HSV hsv = { .h = rgb_matrix_config.hue, .s = rgb_matrix_config.sat, .v = rgb_matrix_config.val };
+    RGB rgb;
+    rgb_led led;
+    for (uint8_t i = 0; i < DRIVER_LED_TOTAL; i++) {
+        led = g_rgb_leds[i];
+        hsv.h = ((led.point.y - 32.0)* cos(g_tick * PI / 128) / 32 + (led.point.x - 112.0) * sin(g_tick * PI / 128) / (112)) * (180) + rgb_matrix_config.hue;
+        rgb = hsv_to_rgb( hsv );
+        rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
+    }
+}
+
+void rgb_matrix_rainbow_beacon(void) {
+    HSV hsv = { .h = rgb_matrix_config.hue, .s = rgb_matrix_config.sat, .v = rgb_matrix_config.val };
+    RGB rgb;
+    rgb_led led;
+    for (uint8_t i = 0; i < DRIVER_LED_TOTAL; i++) {
+        led = g_rgb_leds[i];
+        hsv.h = 1.5 * (led.point.y - 32.0)* cos(g_tick * PI / 128) + 1.5 * (led.point.x - 112.0) * sin(g_tick * PI / 128) + rgb_matrix_config.hue;
+        rgb = hsv_to_rgb( hsv );
+        rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
+    }
+}
+
+void rgb_matrix_rainbow_pinwheels(void) {
+    HSV hsv = { .h = rgb_matrix_config.hue, .s = rgb_matrix_config.sat, .v = rgb_matrix_config.val };
+    RGB rgb;
+    rgb_led led;
+    for (uint8_t i = 0; i < DRIVER_LED_TOTAL; i++) {
+        led = g_rgb_leds[i];
+        hsv.h = 2 * (led.point.y - 32.0)* cos(g_tick * PI / 128) + 2 * (66 - abs(led.point.x - 112.0)) * sin(g_tick * PI / 128) + rgb_matrix_config.hue;
+        rgb = hsv_to_rgb( hsv );
+        rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
+    }
+}
+
+void rgb_matrix_rainbow_moving_chevron(void) {
+    HSV hsv = { .h = rgb_matrix_config.hue, .s = rgb_matrix_config.sat, .v = rgb_matrix_config.val };
+    RGB rgb;
+    rgb_led led;
+    for (uint8_t i = 0; i < DRIVER_LED_TOTAL; i++) {
+        led = g_rgb_leds[i];
+        // uint8_t r = g_tick;
+        uint8_t r = 32;
+        hsv.h = 1.5 * abs(led.point.y - 32.0)* sin(r * PI / 128) + 1.5 * (led.point.x - (g_tick / 256.0 * 224)) * cos(r * PI / 128) + rgb_matrix_config.hue;
+        rgb = hsv_to_rgb( hsv );
+        rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
+    }
+}
+
+
+void rgb_matrix_jellybean_raindrops( bool initialize ) {
+    HSV hsv;
+    RGB rgb;
+
+    // Change one LED every tick
+    uint8_t led_to_change = ( g_tick & 0x000 ) == 0 ? rand() % DRIVER_LED_TOTAL : 255;
+
+    for ( int i=0; i<DRIVER_LED_TOTAL; i++ )
+    {
+        // If initialize, all get set to random colors
+        // If not, all but one will stay the same as before.
+        if ( initialize || i == led_to_change )
+        {
+            hsv.h = rand() & 0xFF;
+            hsv.s = rand() & 0xFF;
+            // Override brightness with global brightness control
+            hsv.v = rgb_matrix_config.val;
+
+            rgb = hsv_to_rgb( hsv );
+            rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
+        }
+    }
+}
+
+void rgb_matrix_multisplash(void) {
+    // if (g_any_key_hit < 0xFF) {
+        HSV hsv = { .h = rgb_matrix_config.hue, .s = rgb_matrix_config.sat, .v = rgb_matrix_config.val };
+        RGB rgb;
+        rgb_led led;
+        for (uint8_t i = 0; i < DRIVER_LED_TOTAL; i++) {
+            led = g_rgb_leds[i];
+            uint16_t c = 0, d = 0;
+            rgb_led last_led;
+            // if (g_last_led_count) {
+                for (uint8_t last_i = 0; last_i < g_last_led_count; last_i++) {
+                    last_led = g_rgb_leds[g_last_led_hit[last_i]];
+                    uint16_t dist = (uint16_t)sqrt(pow(led.point.x - last_led.point.x, 2) + pow(led.point.y - last_led.point.y, 2));
+                    uint16_t effect = (g_key_hit[g_last_led_hit[last_i]] << 2) - dist;
+                    c += MIN(MAX(effect, 0), 255);
+                    d += 255 - MIN(MAX(effect, 0), 255);
+                }
+            // } else {
+            //     d = 255;
+            // }
+            hsv.h = (rgb_matrix_config.hue + c) % 256;
+            hsv.v = MAX(MIN(d, 255), 0);
+            rgb = hsv_to_rgb( hsv );
+            rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
+        }
+    // } else {
+        // rgb_matrix_set_color_all( 0, 0, 0 );
+    // }
+}
+
+
+void rgb_matrix_splash(void) {
+    g_last_led_count = MIN(g_last_led_count, 1);
+    rgb_matrix_multisplash();
+}
+
+
+void rgb_matrix_solid_multisplash(void) {
+    // if (g_any_key_hit < 0xFF) {
+        HSV hsv = { .h = rgb_matrix_config.hue, .s = rgb_matrix_config.sat, .v = rgb_matrix_config.val };
+        RGB rgb;
+        rgb_led led;
+        for (uint8_t i = 0; i < DRIVER_LED_TOTAL; i++) {
+            led = g_rgb_leds[i];
+            uint16_t d = 0;
+            rgb_led last_led;
+            // if (g_last_led_count) {
+                for (uint8_t last_i = 0; last_i < g_last_led_count; last_i++) {
+                    last_led = g_rgb_leds[g_last_led_hit[last_i]];
+                    uint16_t dist = (uint16_t)sqrt(pow(led.point.x - last_led.point.x, 2) + pow(led.point.y - last_led.point.y, 2));
+                    uint16_t effect = (g_key_hit[g_last_led_hit[last_i]] << 2) - dist;
+                    d += 255 - MIN(MAX(effect, 0), 255);
+                }
+            // } else {
+            //     d = 255;
+            // }
+            hsv.v = MAX(MIN(d, 255), 0);
+            rgb = hsv_to_rgb( hsv );
+            rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
+        }
+    // } else {
+        // rgb_matrix_set_color_all( 0, 0, 0 );
+    // }
+}
+
+
+void rgb_matrix_solid_splash(void) {
+    g_last_led_count = MIN(g_last_led_count, 1);
+    rgb_matrix_solid_multisplash();
+}
+
+
+// Needs eeprom access that we don't have setup currently
+
+void rgb_matrix_custom(void) {
+//     HSV hsv;
+//     RGB rgb;
+//     for ( int i=0; i<DRIVER_LED_TOTAL; i++ )
+//     {
+//         backlight_get_key_color(i, &hsv);
+//         // Override brightness with global brightness control
+//         hsv.v = rgb_matrix_config.val;
+//         rgb = hsv_to_rgb( hsv );
+//         rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
+//     }
+}
+
+void rgb_matrix_task(void) {
+	if (!rgb_matrix_config.enable) {
+    	rgb_matrix_all_off();
+    	return;
+    }
+    // delay 1 second before driving LEDs or doing anything else
+    static uint8_t startup_tick = 0;
+    if ( startup_tick < 20 ) {
+        startup_tick++;
+        return;
+    }
+
+    g_tick++;
+
+    if ( g_any_key_hit < 0xFFFFFFFF ) {
+        g_any_key_hit++;
+    }
+
+    for ( int led = 0; led < DRIVER_LED_TOTAL; led++ ) {
+        if ( g_key_hit[led] < 255 ) {
+            if (g_key_hit[led] == 254)
+                g_last_led_count = MAX(g_last_led_count - 1, 0);
+            g_key_hit[led]++;
+        }
+    }
+
+    // Factory default magic value
+    if ( rgb_matrix_config.mode == 255 ) {
+        rgb_matrix_test();
+        return;
+    }
+
+    // Ideally we would also stop sending zeros to the LED driver PWM buffers
+    // while suspended and just do a software shutdown. This is a cheap hack for now.
+    bool suspend_backlight = ((g_suspend_state && RGB_DISABLE_WHEN_USB_SUSPENDED) ||
+            (RGB_DISABLE_AFTER_TIMEOUT > 0 && g_any_key_hit > RGB_DISABLE_AFTER_TIMEOUT * 60 * 20));
+    uint8_t effect = suspend_backlight ? 0 : rgb_matrix_config.mode;
+
+    // Keep track of the effect used last time,
+    // detect change in effect, so each effect can
+    // have an optional initialization.
+    static uint8_t effect_last = 255;
+    bool initialize = effect != effect_last;
+    effect_last = effect;
+
+    // this gets ticked at 20 Hz.
+    // each effect can opt to do calculations
+    // and/or request PWM buffer updates.
+    switch ( effect ) {
+        case RGB_MATRIX_SOLID_COLOR:
+            rgb_matrix_solid_color();
+            break;
+        case RGB_MATRIX_SOLID_REACTIVE:
+            rgb_matrix_solid_reactive();
+            break;
+        case RGB_MATRIX_ALPHAS_MODS:
+            rgb_matrix_alphas_mods();
+            break;
+        case RGB_MATRIX_DUAL_BEACON:
+            rgb_matrix_dual_beacon();
+            break;
+        case RGB_MATRIX_GRADIENT_UP_DOWN:
+            rgb_matrix_gradient_up_down();
+            break;
+        case RGB_MATRIX_RAINDROPS:
+            rgb_matrix_raindrops( initialize );
+            break;
+        case RGB_MATRIX_CYCLE_ALL:
+            rgb_matrix_cycle_all();
+            break;
+        case RGB_MATRIX_CYCLE_LEFT_RIGHT:
+            rgb_matrix_cycle_left_right();
+            break;
+        case RGB_MATRIX_CYCLE_UP_DOWN:
+            rgb_matrix_cycle_up_down();
+            break;
+        case RGB_MATRIX_RAINBOW_BEACON:
+            rgb_matrix_rainbow_beacon();
+            break;
+        case RGB_MATRIX_RAINBOW_PINWHEELS:
+            rgb_matrix_rainbow_pinwheels();
+            break;
+        case RGB_MATRIX_RAINBOW_MOVING_CHEVRON:
+            rgb_matrix_rainbow_moving_chevron();
+            break;
+        case RGB_MATRIX_JELLYBEAN_RAINDROPS:
+            rgb_matrix_jellybean_raindrops( initialize );
+            break;
+        #ifdef RGB_MATRIX_KEYPRESSES
+            case RGB_MATRIX_SPLASH:
+                rgb_matrix_splash();
+                break;
+            case RGB_MATRIX_MULTISPLASH:
+                rgb_matrix_multisplash();
+                break;
+            case RGB_MATRIX_SOLID_SPLASH:
+                rgb_matrix_solid_splash();
+                break;
+            case RGB_MATRIX_SOLID_MULTISPLASH:
+                rgb_matrix_solid_multisplash();
+                break;
+        #endif
+        default:
+            rgb_matrix_custom();
+            break;
+    }
+
+    if ( ! suspend_backlight ) {
+        rgb_matrix_indicators();
+    }
+
+}
+
+void rgb_matrix_indicators(void) {
+    rgb_matrix_indicators_kb();
+    rgb_matrix_indicators_user();
+}
+
+__attribute__((weak))
+void rgb_matrix_indicators_kb(void) {}
+
+__attribute__((weak))
+void rgb_matrix_indicators_user(void) {}
+
+
+// void rgb_matrix_set_indicator_index( uint8_t *index, uint8_t row, uint8_t column )
+// {
+//  if ( row >= MATRIX_ROWS )
+//  {
+//      // Special value, 255=none, 254=all
+//      *index = row;
+//  }
+//  else
+//  {
+//      // This needs updated to something like
+//      // uint8_t led[8], led_count;
+//      // map_row_column_to_led(row,column,led,&led_count);
+//      // for(uint8_t i = 0; i < led_count; i++)
+//      map_row_column_to_led( row, column, index );
+//  }
+// }
+
+void rgb_matrix_init_drivers(void) {
+    //sei();
+
+    // Initialize TWI
+    TWIInit();
+    IS31FL3731_init( DRIVER_ADDR_1 );
+    IS31FL3731_init( DRIVER_ADDR_2 );
+
+    for ( int index = 0; index < DRIVER_LED_TOTAL; index++ ) {
+        bool enabled = true;
+        // This only caches it for later
+        IS31FL3731_set_led_control_register( index, enabled, enabled, enabled );
+    }
+    // This actually updates the LED drivers
+    IS31FL3731_update_led_control_registers( DRIVER_ADDR_1, DRIVER_ADDR_2 );
+
+    // TODO: put the 1 second startup delay here?
+
+    // clear the key hits
+    for ( int led=0; led<DRIVER_LED_TOTAL; led++ ) {
+        g_key_hit[led] = 255;
+    }
+
+
+    if (!eeconfig_is_enabled()) {
+        dprintf("rgb_matrix_init_drivers eeconfig is not enabled.\n");
+        eeconfig_init();
+        eeconfig_update_rgb_matrix_default();
+    }
+    rgb_matrix_config.raw = eeconfig_read_rgb_matrix();
+    if (!rgb_matrix_config.mode) {
+        dprintf("rgb_matrix_init_drivers rgb_matrix_config.mode = 0. Write default values to EEPROM.\n");
+        eeconfig_update_rgb_matrix_default();
+        rgb_matrix_config.raw = eeconfig_read_rgb_matrix();
+    }
+    eeconfig_debug_rgb_matrix(); // display current eeprom values
+}
+
+// Deals with the messy details of incrementing an integer
+uint8_t increment( uint8_t value, uint8_t step, uint8_t min, uint8_t max ) {
+    int16_t new_value = value;
+    new_value += step;
+    return MIN( MAX( new_value, min ), max );
+}
+
+uint8_t decrement( uint8_t value, uint8_t step, uint8_t min, uint8_t max ) {
+    int16_t new_value = value;
+    new_value -= step;
+    return MIN( MAX( new_value, min ), max );
+}
+
+// void *backlight_get_custom_key_color_eeprom_address( uint8_t led )
+// {
+//     // 3 bytes per color
+//     return EECONFIG_RGB_MATRIX + ( led * 3 );
+// }
+
+// void backlight_get_key_color( uint8_t led, HSV *hsv )
+// {
+//     void *address = backlight_get_custom_key_color_eeprom_address( led );
+//     hsv->h = eeprom_read_byte(address);
+//     hsv->s = eeprom_read_byte(address+1);
+//     hsv->v = eeprom_read_byte(address+2);
+// }
+
+// void backlight_set_key_color( uint8_t row, uint8_t column, HSV hsv )
+// {
+//     uint8_t led[8], led_count;
+//     map_row_column_to_led(row,column,led,&led_count);
+//     for(uint8_t i = 0; i < led_count; i++) {
+//         if ( led[i] < DRIVER_LED_TOTAL )
+//         {
+//             void *address = backlight_get_custom_key_color_eeprom_address(led[i]);
+//             eeprom_update_byte(address, hsv.h);
+//             eeprom_update_byte(address+1, hsv.s);
+//             eeprom_update_byte(address+2, hsv.v);
+//         }
+//     }
+// }
+
+void rgb_matrix_test_led( uint8_t index, bool red, bool green, bool blue ) {
+    for ( int i=0; i<DRIVER_LED_TOTAL; i++ )
+    {
+        if ( i == index )
+        {
+            IS31FL3731_set_led_control_register( i, red, green, blue );
+        }
+        else
+        {
+            IS31FL3731_set_led_control_register( i, false, false, false );
+        }
+    }
+}
+
+uint32_t rgb_matrix_get_tick(void) {
+    return g_tick;
+}
+
+void rgblight_toggle(void) {
+	rgb_matrix_config.enable ^= 1;
+    eeconfig_update_rgb_matrix(rgb_matrix_config.raw);
+}
+
+void rgblight_step(void) {
+    rgb_matrix_config.mode++;
+    if (rgb_matrix_config.mode >= RGB_MATRIX_EFFECT_MAX)
+        rgb_matrix_config.mode = 1;
+    eeconfig_update_rgb_matrix(rgb_matrix_config.raw);
+}
+
+void rgblight_step_reverse(void) {
+    rgb_matrix_config.mode--;
+    if (rgb_matrix_config.mode <= 1)
+        rgb_matrix_config.mode = (RGB_MATRIX_EFFECT_MAX - 1);
+    eeconfig_update_rgb_matrix(rgb_matrix_config.raw);
+}
+
+void rgblight_increase_hue(void) {
+    rgb_matrix_config.hue = increment( rgb_matrix_config.hue, 8, 0, 255 );
+    eeconfig_update_rgb_matrix(rgb_matrix_config.raw);
+}
+
+void rgblight_decrease_hue(void) {
+    rgb_matrix_config.hue = decrement( rgb_matrix_config.hue, 8, 0, 255 );
+    eeconfig_update_rgb_matrix(rgb_matrix_config.raw);
+}
+
+void rgblight_increase_sat(void) {
+    rgb_matrix_config.sat = increment( rgb_matrix_config.sat, 8, 0, 255 );
+    eeconfig_update_rgb_matrix(rgb_matrix_config.raw);
+}
+
+void rgblight_decrease_sat(void) {
+    rgb_matrix_config.sat = decrement( rgb_matrix_config.sat, 8, 0, 255 );
+    eeconfig_update_rgb_matrix(rgb_matrix_config.raw);
+}
+
+void rgblight_increase_val(void) {
+    rgb_matrix_config.val = increment( rgb_matrix_config.val, 8, 0, 255 );
+    eeconfig_update_rgb_matrix(rgb_matrix_config.raw);
+}
+
+void rgblight_decrease_val(void) {
+    rgb_matrix_config.val = decrement( rgb_matrix_config.val, 8, 0, 255 );
+    eeconfig_update_rgb_matrix(rgb_matrix_config.raw);
+}
+
+void rgblight_mode(uint8_t mode) {
+    rgb_matrix_config.mode = mode;
+    eeconfig_update_rgb_matrix(rgb_matrix_config.raw);
+}
+
+uint32_t rgblight_get_mode(void) {
+    return rgb_matrix_config.mode;
+}
diff --git a/quantum/rgb_matrix.h b/quantum/rgb_matrix.h
new file mode 100644
index 0000000000..ef93c6d5cb
--- /dev/null
+++ b/quantum/rgb_matrix.h
@@ -0,0 +1,135 @@
+/* Copyright 2017 Jason Williams
+ * Copyright 2017 Jack Humbert
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef RGB_MATRIX_H
+#define RGB_MATRIX_H
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "color.h"
+#include "is31fl3731.h"
+#include "quantum.h"
+
+typedef struct Point {
+	uint8_t x;
+	uint8_t y;
+} __attribute__((packed)) Point;
+
+typedef struct rgb_led {
+	union {
+		uint8_t raw;
+		struct {
+			uint8_t row:4; // 16 max
+			uint8_t col:4; // 16 max
+		};
+	} matrix_co;
+	Point point;
+	uint8_t modifier:1;
+} __attribute__((packed)) rgb_led;
+
+
+extern const rgb_led g_rgb_leds[DRIVER_LED_TOTAL];
+
+typedef struct
+{
+	HSV color;
+	uint8_t index;
+} rgb_indicator;
+
+typedef union {
+  uint32_t raw;
+  struct {
+    bool     enable  :1;
+    uint8_t  mode    :6;
+    uint16_t hue     :9;
+    uint8_t  sat     :8;
+    uint8_t  val     :8;
+  };
+} rgb_config_t;
+
+enum rgb_matrix_effects {
+	RGB_MATRIX_SOLID_COLOR = 1,
+    RGB_MATRIX_SOLID_REACTIVE,
+    RGB_MATRIX_ALPHAS_MODS,
+    RGB_MATRIX_DUAL_BEACON,
+    RGB_MATRIX_GRADIENT_UP_DOWN,
+    RGB_MATRIX_RAINDROPS,
+    RGB_MATRIX_CYCLE_ALL,
+    RGB_MATRIX_CYCLE_LEFT_RIGHT,
+    RGB_MATRIX_CYCLE_UP_DOWN,
+    RGB_MATRIX_RAINBOW_BEACON,
+    RGB_MATRIX_RAINBOW_PINWHEELS,
+    RGB_MATRIX_RAINBOW_MOVING_CHEVRON,
+    RGB_MATRIX_JELLYBEAN_RAINDROPS,
+#ifdef RGB_MATRIX_KEYPRESSES
+    RGB_MATRIX_SPLASH,
+    RGB_MATRIX_MULTISPLASH,
+    RGB_MATRIX_SOLID_SPLASH,
+    RGB_MATRIX_SOLID_MULTISPLASH,
+#endif
+    RGB_MATRIX_EFFECT_MAX
+};
+
+void rgb_matrix_set_color( int index, uint8_t red, uint8_t green, uint8_t blue );
+
+// This runs after another backlight effect and replaces
+// colors already set
+void rgb_matrix_indicators(void);
+void rgb_matrix_indicators_kb(void);
+void rgb_matrix_indicators_user(void);
+
+void rgb_matrix_single_LED_test(void);
+
+void rgb_matrix_init_drivers(void);
+
+void rgb_matrix_set_suspend_state(bool state);
+void rgb_matrix_set_indicator_state(uint8_t state);
+
+
+void rgb_matrix_task(void);
+
+// This should not be called from an interrupt
+// (eg. from a timer interrupt).
+// Call this while idle (in between matrix scans).
+// If the buffer is dirty, it will update the driver with the buffer.
+void rgb_matrix_update_pwm_buffers(void);
+
+bool process_rgb_matrix(uint16_t keycode, keyrecord_t *record);
+
+void rgb_matrix_increase(void);
+void rgb_matrix_decrease(void);
+
+// void *backlight_get_key_color_eeprom_address(uint8_t led);
+// void backlight_get_key_color( uint8_t led, HSV *hsv );
+// void backlight_set_key_color( uint8_t row, uint8_t column, HSV hsv );
+
+void rgb_matrix_test_led( uint8_t index, bool red, bool green, bool blue );
+uint32_t rgb_matrix_get_tick(void);
+
+void rgblight_toggle(void);
+void rgblight_step(void);
+void rgblight_step_reverse(void);
+void rgblight_increase_hue(void);
+void rgblight_decrease_hue(void);
+void rgblight_increase_sat(void);
+void rgblight_decrease_sat(void);
+void rgblight_increase_val(void);
+void rgblight_decrease_val(void);
+void rgblight_mode(uint8_t mode);
+uint32_t rgblight_get_mode(void);
+
+#endif