Convert remaining PS2AVRGB boards to I2C WS2812 driver (#7245)

* Convert remaining PS2AVRGB boards to I2C WS2812 driver

* Add back functions to make the custom matrices happy

52 files changed, 138 insertions, 2539 deletions

diff --git a/keyboards/bfake/bfake.c b/keyboards/bfake/bfake.c
index 2160706fe..f7d006576 100644
--- a/keyboards/bfake/bfake.c
+++ b/keyboards/bfake/bfake.c
@@ -16,51 +16,34 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "bfake.h"
-#ifdef BACKLIGHT_ENABLE
-#include "backlight.h"
-#endif
-#ifdef RGBLIGHT_ENABLE
-#include "rgblight.h"
-#endif
-
-#include <avr/pgmspace.h>
-
-#include "action_layer.h"
-#include "i2c.h"
-#include "quantum.h"
-
-#ifdef RGBLIGHT_ENABLE
-extern rgblight_config_t rgblight_config;
-
-void rgblight_set(void) {
-    if (!rgblight_config.enable) {
-        for (uint8_t i = 0; i < RGBLED_NUM; i++) {
-            led[i].r = 0;
-            led[i].g = 0;
-            led[i].b = 0;
-        }
-    }
-
-    i2c_init();
-    i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
-}
-#endif
 
 __attribute__ ((weak))
-void matrix_scan_user(void) {
-}
+void matrix_scan_user(void) {}
 
 void backlight_init_ports(void) {
-	DDRD |= (1<<0 | 1<<1 | 1<<4 | 1<<6);
-	PORTD &= ~(1<<0 | 1<<1 | 1<<4 | 1<<6);
+	setPinOutput(D0);
+	setPinOutput(D1);
+	setPinOutput(D4);
+	setPinOutput(D6);
+
+	writePinLow(D0);
+	writePinLow(D1);
+	writePinLow(D4);
+	writePinLow(D6);
 }
 
 void backlight_set(uint8_t level) {
 	if (level == 0) {
 		// Turn out the lights
-		PORTD &= ~(1<<0 | 1<<1 | 1<<4 | 1<<6);
+		writePinLow(D0);
+		writePinLow(D1);
+		writePinLow(D4);
+		writePinLow(D6);
 	} else {
 		// Turn on the lights
-		PORTD |= (1<<0 | 1<<1 | 1<<4 | 1<<6);
+		writePinHigh(D0);
+		writePinHigh(D1);
+		writePinHigh(D4);
+		writePinHigh(D6);
 	}
 }
diff --git a/keyboards/bfake/i2c.c b/keyboards/bfake/i2c.c
deleted file mode 100644
index a4f952135..000000000
--- a/keyboards/bfake/i2c.c
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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/>.
-*/
-
-// Please do not modify this file 
-
-#include <avr/io.h>
-#include <util/twi.h>
-
-#include "i2c.h"
-
-void i2c_set_bitrate(uint16_t bitrate_khz) {
-    uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz);
-    if (bitrate_div >= 16) {
-        bitrate_div = (bitrate_div - 16) / 2;
-    }
-    TWBR = bitrate_div;
-}
-
-void i2c_init(void) {
-    // set pull-up resistors on I2C bus pins
-    PORTC |= 0b11;
-
-    i2c_set_bitrate(400);
-
-    // enable TWI (two-wire interface)
-    TWCR |= (1 << TWEN);
-
-    // enable TWI interrupt and slave address ACK
-    TWCR |= (1 << TWIE);
-    TWCR |= (1 << TWEA);
-}
-
-uint8_t i2c_start(uint8_t address) {
-    // reset TWI control register
-    TWCR = 0;
-
-    // begin transmission and wait for it to end
-    TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    // check if the start condition was successfully transmitted
-    if ((TWSR & 0xF8) != TW_START) {
-        return 1;
-    }
-
-    // transmit address and wait
-    TWDR = address;
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    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;
-}
-
-void i2c_stop(void) {
-    TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
-}
-
-uint8_t i2c_write(uint8_t data) {
-    TWDR = data;
-
-    // transmit data and wait
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    if ((TWSR & 0xF8) != TW_MT_DATA_ACK) {
-        return 1;
-    }
-
-    return 0;
-}
-
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) {
-    if (i2c_start(address)) {
-        return 1;
-    }
-
-    for (uint16_t i = 0; i < length; i++) {
-        if (i2c_write(data[i])) {
-            return 1;
-        }
-    }
-
-    i2c_stop();
-
-    return 0;
-}
diff --git a/keyboards/bfake/i2c.h b/keyboards/bfake/i2c.h
deleted file mode 100644
index 93a69c94d..000000000
--- a/keyboards/bfake/i2c.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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/>.
-*/
-
-// Please do not modify this file 
-
-#ifndef __I2C_H__
-#define __I2C_H__
-
-void i2c_init(void);
-void i2c_set_bitrate(uint16_t bitrate_khz);
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length);
-
-#endif
diff --git a/keyboards/bfake/rules.mk b/keyboards/bfake/rules.mk
index b5b3b852c..5963c9810 100644
--- a/keyboards/bfake/rules.mk
+++ b/keyboards/bfake/rules.mk
@@ -1,18 +1,3 @@
-# Copyright 2017 Luiz Ribeiro <luizribeiro@gmail.com>
-#
-# 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/>.
-
 # MCU name
 MCU = atmega32a
 
@@ -34,10 +19,10 @@ CONSOLE_ENABLE = yes
 COMMAND_ENABLE = yes
 BACKLIGHT_ENABLE = no
 RGBLIGHT_ENABLE = no
-RGBLIGHT_CUSTOM_DRIVER = yes
+WS2812_DRIVER = i2c
 
 OPT_DEFS = -DDEBUG_LEVEL=0
 
 # custom matrix setup
 CUSTOM_MATRIX = yes
-SRC = matrix.c i2c.c
+SRC = matrix.c
diff --git a/keyboards/jc65/v32a/i2c.c b/keyboards/jc65/v32a/i2c.c
deleted file mode 100644
index a4f952135..000000000
--- a/keyboards/jc65/v32a/i2c.c
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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/>.
-*/
-
-// Please do not modify this file 
-
-#include <avr/io.h>
-#include <util/twi.h>
-
-#include "i2c.h"
-
-void i2c_set_bitrate(uint16_t bitrate_khz) {
-    uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz);
-    if (bitrate_div >= 16) {
-        bitrate_div = (bitrate_div - 16) / 2;
-    }
-    TWBR = bitrate_div;
-}
-
-void i2c_init(void) {
-    // set pull-up resistors on I2C bus pins
-    PORTC |= 0b11;
-
-    i2c_set_bitrate(400);
-
-    // enable TWI (two-wire interface)
-    TWCR |= (1 << TWEN);
-
-    // enable TWI interrupt and slave address ACK
-    TWCR |= (1 << TWIE);
-    TWCR |= (1 << TWEA);
-}
-
-uint8_t i2c_start(uint8_t address) {
-    // reset TWI control register
-    TWCR = 0;
-
-    // begin transmission and wait for it to end
-    TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    // check if the start condition was successfully transmitted
-    if ((TWSR & 0xF8) != TW_START) {
-        return 1;
-    }
-
-    // transmit address and wait
-    TWDR = address;
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    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;
-}
-
-void i2c_stop(void) {
-    TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
-}
-
-uint8_t i2c_write(uint8_t data) {
-    TWDR = data;
-
-    // transmit data and wait
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    if ((TWSR & 0xF8) != TW_MT_DATA_ACK) {
-        return 1;
-    }
-
-    return 0;
-}
-
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) {
-    if (i2c_start(address)) {
-        return 1;
-    }
-
-    for (uint16_t i = 0; i < length; i++) {
-        if (i2c_write(data[i])) {
-            return 1;
-        }
-    }
-
-    i2c_stop();
-
-    return 0;
-}
diff --git a/keyboards/jc65/v32a/i2c.h b/keyboards/jc65/v32a/i2c.h
deleted file mode 100644
index 93a69c94d..000000000
--- a/keyboards/jc65/v32a/i2c.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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/>.
-*/
-
-// Please do not modify this file 
-
-#ifndef __I2C_H__
-#define __I2C_H__
-
-void i2c_init(void);
-void i2c_set_bitrate(uint16_t bitrate_khz);
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length);
-
-#endif
diff --git a/keyboards/jc65/v32a/rules.mk b/keyboards/jc65/v32a/rules.mk
index ee6efb3fa..18e7f1de9 100644
--- a/keyboards/jc65/v32a/rules.mk
+++ b/keyboards/jc65/v32a/rules.mk
@@ -1,18 +1,3 @@
-# Copyright 2017 Luiz Ribeiro <luizribeiro@gmail.com>
-#
-# 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/>.
-
 # MCU name
 MCU = atmega32a
 
@@ -34,10 +19,10 @@ CONSOLE_ENABLE = yes
 COMMAND_ENABLE = yes
 BACKLIGHT_ENABLE = yes
 RGBLIGHT_ENABLE = yes
-RGBLIGHT_CUSTOM_DRIVER = yes
+WS2812_DRIVER = i2c
 
 OPT_DEFS = -DDEBUG_LEVEL=0
 
 # custom matrix setup
 CUSTOM_MATRIX = yes
-SRC = matrix.c i2c.c
+SRC = matrix.c
diff --git a/keyboards/jc65/v32a/v32a.c b/keyboards/jc65/v32a/v32a.c
index 8176ade0a..9b1e07274 100644
--- a/keyboards/jc65/v32a/v32a.c
+++ b/keyboards/jc65/v32a/v32a.c
@@ -16,56 +16,36 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "v32a.h"
-#ifdef BACKLIGHT_ENABLE
-#include "backlight.h"
-#endif
-#ifdef RGBLIGHT_ENABLE
-#include "rgblight.h"
-#endif
-
-#include <avr/pgmspace.h>
-
-#include "action_layer.h"
-#include "i2c.h"
-#include "quantum.h"
-
-#ifdef RGBLIGHT_ENABLE
-extern rgblight_config_t rgblight_config;
-
-void rgblight_set(void) {
-    if (!rgblight_config.enable) {
-        for (uint8_t i = 0; i < RGBLED_NUM; i++) {
-            led[i].r = 0;
-            led[i].g = 0;
-            led[i].b = 0;
-        }
-    }
-
-    i2c_init();
-    i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
-}
-#endif
 
 __attribute__ ((weak))
-void matrix_scan_user(void) {
-#ifdef RGBLIGHT_ENABLE
-  rgblight_task();
-#endif
-}
+void matrix_scan_user(void) {}
 
 #ifdef BACKLIGHT_ENABLE
 void backlight_init_ports(void) {
-	DDRD |= (1<<0 | 1<<1 | 1<<4 | 1<<6);
-	PORTD &= ~(1<<0 | 1<<1 | 1<<4 | 1<<6);
+	setPinOutput(D0);
+	setPinOutput(D1);
+	setPinOutput(D4);
+	setPinOutput(D6);
+
+	writePinLow(D0);
+	writePinLow(D1);
+	writePinLow(D4);
+	writePinLow(D6);
 }
 
 void backlight_set(uint8_t level) {
 	if (level == 0) {
 		// Turn out the lights
-		PORTD &= ~(1<<0 | 1<<1 | 1<<4 | 1<<6);
+		writePinLow(D0);
+		writePinLow(D1);
+		writePinLow(D4);
+		writePinLow(D6);
 	} else {
 		// Turn on the lights
-		PORTD |= (1<<0 | 1<<1 | 1<<4 | 1<<6);
+		writePinHigh(D0);
+		writePinHigh(D1);
+		writePinHigh(D4);
+		writePinHigh(D6);
 	}
 }
 #endif
diff --git a/keyboards/jj50/i2c.c b/keyboards/jj50/i2c.c
deleted file mode 100644
index c27f3e3d1..000000000
--- a/keyboards/jj50/i2c.c
+++ /dev/null
@@ -1,104 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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 <avr/io.h>
-#include <util/twi.h>
-
-#include "i2c.h"
-
-void i2c_set_bitrate(uint16_t bitrate_khz) {
-    uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz);
-    if (bitrate_div >= 16) {
-        bitrate_div = (bitrate_div - 16) / 2;
-    }
-    TWBR = bitrate_div;
-}
-
-void i2c_init(void) {
-    // set pull-up resistors on I2C bus pins
-    PORTC |= 0b11;
-
-    i2c_set_bitrate(400);
-
-    // enable TWI (two-wire interface)
-    TWCR |= (1 << TWEN);
-
-    // enable TWI interrupt and slave address ACK
-    TWCR |= (1 << TWIE);
-    TWCR |= (1 << TWEA);
-}
-
-uint8_t i2c_start(uint8_t address) {
-    // reset TWI control register
-    TWCR = 0;
-
-    // begin transmission and wait for it to end
-    TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    // check if the start condition was successfully transmitted
-    if ((TWSR & 0xF8) != TW_START) {
-        return 1;
-    }
-
-    // transmit address and wait
-    TWDR = address;
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    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;
-}
-
-void i2c_stop(void) {
-    TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
-}
-
-uint8_t i2c_write(uint8_t data) {
-    TWDR = data;
-
-    // transmit data and wait
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    if ((TWSR & 0xF8) != TW_MT_DATA_ACK) {
-        return 1;
-    }
-
-    return 0;
-}
-
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) {
-    if (i2c_start(address)) {
-        return 1;
-    }
-
-    for (uint16_t i = 0; i < length; i++) {
-        if (i2c_write(data[i])) {
-            return 1;
-        }
-    }
-
-    i2c_stop();
-
-    return 0;
-}
diff --git a/keyboards/jj50/i2c.h b/keyboards/jj50/i2c.h
deleted file mode 100644
index 27c9d3d05..000000000
--- a/keyboards/jj50/i2c.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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 __I2C_H__
-#define __I2C_H__
-
-void i2c_init(void);
-void i2c_set_bitrate(uint16_t bitrate_khz);
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length);
-
-#endif
diff --git a/keyboards/jj50/jj50.c b/keyboards/jj50/jj50.c
index d4a70f68d..7c3cee95d 100644
--- a/keyboards/jj50/jj50.c
+++ b/keyboards/jj50/jj50.c
@@ -17,24 +17,20 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #include "jj50.h"
 
-#include <avr/pgmspace.h>
-
-#include "action_layer.h"
-#include "i2c.h"
-#include "quantum.h"
-
 #include "backlight.h"
 #include "backlight_custom.h"
 
-// for keyboard subdirectory level init functions
-// @Override
-void matrix_init_kb(void) {
-    // call user level keymaps, if any
-    matrix_init_user();
-}
+void matrix_init_kb(void) { matrix_init_user(); }
+
+__attribute__ ((weak))
+void matrix_init_user(void) {}
+
+void matrix_scan_kb(void) { matrix_scan_user(); }
+
+__attribute__ ((weak))
+void matrix_scan_user(void) {}
 
 #ifdef BACKLIGHT_ENABLE
-/// Overrides functions in `quantum.c`
 void backlight_init_ports(void) {
     b_led_init_ports();
 }
@@ -47,48 +43,3 @@ void backlight_set(uint8_t level) {
     b_led_set(level);
 }
 #endif
-
-#ifdef RGBLIGHT_ENABLE
-extern rgblight_config_t rgblight_config;
-
-// custom RGB driver
-void rgblight_set(void) {
-    if (!rgblight_config.enable) {
-        for (uint8_t i=0; i<RGBLED_NUM; i++) {
-            led[i].r = 0;
-            led[i].g = 0;
-            led[i].b = 0;
-        }
-    }
-    
-    i2c_init();
-    i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
-}
-
-bool rgb_init = false;
-
-void matrix_scan_kb(void) {
-    // if LEDs were previously on before poweroff, turn them back on
-    if (rgb_init == false && rgblight_config.enable) {
-        i2c_init();
-        i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
-        rgb_init = true;
-    }
-    
-    rgblight_task();
-#else
-    void matrix_scan_kb(void) {
-#endif
-        matrix_scan_user();
-        /* Nothing else for now. */
-    }
-    
-    __attribute__((weak)) // overridable
-    void matrix_init_user(void) {
-        
-    }
-    
-    __attribute__((weak)) // overridable
-    void matrix_scan_user(void) {
-        
-    }
diff --git a/keyboards/jj50/rules.mk b/keyboards/jj50/rules.mk
index b23b4becd..40473e6ec 100644
--- a/keyboards/jj50/rules.mk
+++ b/keyboards/jj50/rules.mk
@@ -1,19 +1,3 @@
-# Copyright 2017 Luiz Ribeiro <luizribeiro@gmail.com>
-# Modified 2018 Wayne Jones (WarmCatUK) <waynekjones@gmail.com>
-
-# 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/>.
-
 # MCU name
 MCU = atmega32a
 
@@ -35,22 +19,18 @@ CONSOLE_ENABLE = no
 COMMAND_ENABLE = yes
 BACKLIGHT_ENABLE = yes
 RGBLIGHT_ENABLE = yes
-RGBLIGHT_CUSTOM_DRIVER = yes
+WS2812_DRIVER = i2c
 NKRO_ENABLE = no
 # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
 
-
-DISABLE_WS2812 = no
-
 KEY_LOCK_ENABLE = yes
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
 SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
 
-
 #OPT_DEFS = -DDEBUG_LEVEL=0
 
 # custom matrix setup
 CUSTOM_MATRIX = yes
-SRC = matrix.c i2c.c backlight.c
+SRC = matrix.c backlight.c
 
 LAYOUTS = ortho_5x12
diff --git a/keyboards/mechmini/v1/i2c.c b/keyboards/mechmini/v1/i2c.c
deleted file mode 100644
index c27f3e3d1..000000000
--- a/keyboards/mechmini/v1/i2c.c
+++ /dev/null
@@ -1,104 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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 <avr/io.h>
-#include <util/twi.h>
-
-#include "i2c.h"
-
-void i2c_set_bitrate(uint16_t bitrate_khz) {
-    uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz);
-    if (bitrate_div >= 16) {
-        bitrate_div = (bitrate_div - 16) / 2;
-    }
-    TWBR = bitrate_div;
-}
-
-void i2c_init(void) {
-    // set pull-up resistors on I2C bus pins
-    PORTC |= 0b11;
-
-    i2c_set_bitrate(400);
-
-    // enable TWI (two-wire interface)
-    TWCR |= (1 << TWEN);
-
-    // enable TWI interrupt and slave address ACK
-    TWCR |= (1 << TWIE);
-    TWCR |= (1 << TWEA);
-}
-
-uint8_t i2c_start(uint8_t address) {
-    // reset TWI control register
-    TWCR = 0;
-
-    // begin transmission and wait for it to end
-    TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    // check if the start condition was successfully transmitted
-    if ((TWSR & 0xF8) != TW_START) {
-        return 1;
-    }
-
-    // transmit address and wait
-    TWDR = address;
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    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;
-}
-
-void i2c_stop(void) {
-    TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
-}
-
-uint8_t i2c_write(uint8_t data) {
-    TWDR = data;
-
-    // transmit data and wait
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    if ((TWSR & 0xF8) != TW_MT_DATA_ACK) {
-        return 1;
-    }
-
-    return 0;
-}
-
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) {
-    if (i2c_start(address)) {
-        return 1;
-    }
-
-    for (uint16_t i = 0; i < length; i++) {
-        if (i2c_write(data[i])) {
-            return 1;
-        }
-    }
-
-    i2c_stop();
-
-    return 0;
-}
diff --git a/keyboards/mechmini/v1/i2c.h b/keyboards/mechmini/v1/i2c.h
deleted file mode 100644
index 194a82cab..000000000
--- a/keyboards/mechmini/v1/i2c.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-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 __I2C_H__
-#define __I2C_H__
-
-void i2c_init(void);
-void i2c_set_bitrate(uint16_t bitrate_khz);
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length);
-
-#endif
diff --git a/keyboards/mechmini/v1/rules.mk b/keyboards/mechmini/v1/rules.mk
index 3510ca6f3..ee023b43b 100644
--- a/keyboards/mechmini/v1/rules.mk
+++ b/keyboards/mechmini/v1/rules.mk
@@ -1,18 +1,3 @@
-# Copyright 2017 Luiz Ribeiro <luizribeiro@gmail.com>
-#
-# 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/>.
-
 # MCU name
 MCU = atmega32a
 
@@ -34,10 +19,10 @@ CONSOLE_ENABLE = yes
 COMMAND_ENABLE = yes
 BACKLIGHT_ENABLE = no
 RGBLIGHT_ENABLE = yes
-RGBLIGHT_CUSTOM_DRIVER = yes
+WS2812_DRIVER = i2c
 
 OPT_DEFS = -DDEBUG_LEVEL=0
 
 # custom matrix setup
 CUSTOM_MATRIX = yes
-SRC = matrix.c i2c.c
+SRC = matrix.c
diff --git a/keyboards/mechmini/v1/v1.c b/keyboards/mechmini/v1/v1.c
index 508d60c78..2c910d965 100644
--- a/keyboards/mechmini/v1/v1.c
+++ b/keyboards/mechmini/v1/v1.c
@@ -16,61 +16,13 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "v1.h"
-#include <avr/pgmspace.h>
-#include "action_layer.h"
-#include "i2c.h"
-#include "quantum.h"
-#include "rgblight.h"
 
-// for keyboard subdirectory level init functions
-// @Override
-void matrix_init_kb(void) {
-  // call user level keymaps, if any
-  matrix_init_user();
-}
+void matrix_init_kb(void) { matrix_init_user(); }
 
-#ifdef RGBLIGHT_ENABLE
-extern rgblight_config_t rgblight_config;
+__attribute__ ((weak))
+void matrix_init_user(void) {}
 
-// custom RGB driver
-void rgblight_set(void) {
-  if (!rgblight_config.enable) {
-    for (uint8_t i=0; i<RGBLED_NUM; i++) {
-      led[i].r = 0;
-      led[i].g = 0;
-      led[i].b = 0;
-    }
-  }
+void matrix_scan_kb(void) { matrix_scan_user(); }
 
-  i2c_init();
-  i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
-}
-
-bool rgb_init = false;
-
-void matrix_scan_kb(void) {
-  // if LEDs were previously on before poweroff, turn them back on
-  if (rgb_init == false && rgblight_config.enable) {
-    i2c_init();
-    i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
-    rgb_init = true;
-  }
-
-  rgblight_task();
-#else
-void matrix_scan_kb(void) {
-#endif
-  matrix_scan_user();
-  /* Nothing else for now. */
-}
-
-__attribute__((weak)) // overridable
-void matrix_init_user(void) {
-
-}
-
-
-__attribute__((weak)) // overridable
-void matrix_scan_user(void) {
-
-}
+__attribute__ ((weak))
+void matrix_scan_user(void) {}
diff --git a/keyboards/mehkee96/i2c.c b/keyboards/mehkee96/i2c.c
deleted file mode 100644
index a4f952135..000000000
--- a/keyboards/mehkee96/i2c.c
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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/>.
-*/
-
-// Please do not modify this file 
-
-#include <avr/io.h>
-#include <util/twi.h>
-
-#include "i2c.h"
-
-void i2c_set_bitrate(uint16_t bitrate_khz) {
-    uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz);
-    if (bitrate_div >= 16) {
-        bitrate_div = (bitrate_div - 16) / 2;
-    }
-    TWBR = bitrate_div;
-}
-
-void i2c_init(void) {
-    // set pull-up resistors on I2C bus pins
-    PORTC |= 0b11;
-
-    i2c_set_bitrate(400);
-
-    // enable TWI (two-wire interface)
-    TWCR |= (1 << TWEN);
-
-    // enable TWI interrupt and slave address ACK
-    TWCR |= (1 << TWIE);
-    TWCR |= (1 << TWEA);
-}
-
-uint8_t i2c_start(uint8_t address) {
-    // reset TWI control register
-    TWCR = 0;
-
-    // begin transmission and wait for it to end
-    TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    // check if the start condition was successfully transmitted
-    if ((TWSR & 0xF8) != TW_START) {
-        return 1;
-    }
-
-    // transmit address and wait
-    TWDR = address;
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    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;
-}
-
-void i2c_stop(void) {
-    TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
-}
-
-uint8_t i2c_write(uint8_t data) {
-    TWDR = data;
-
-    // transmit data and wait
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    if ((TWSR & 0xF8) != TW_MT_DATA_ACK) {
-        return 1;
-    }
-
-    return 0;
-}
-
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) {
-    if (i2c_start(address)) {
-        return 1;
-    }
-
-    for (uint16_t i = 0; i < length; i++) {
-        if (i2c_write(data[i])) {
-            return 1;
-        }
-    }
-
-    i2c_stop();
-
-    return 0;
-}
diff --git a/keyboards/mehkee96/i2c.h b/keyboards/mehkee96/i2c.h
deleted file mode 100644
index 7ce50cdb5..000000000
--- a/keyboards/mehkee96/i2c.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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/>.
-*/
-
-// Please do not modify this file
-
-#ifndef __I2C_H__
-#define __I2C_H__
-
-void i2c_init(void);
-void i2c_set_bitrate(uint16_t bitrate_khz);
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length);
-
-#endif
diff --git a/keyboards/mehkee96/mehkee96.c b/keyboards/mehkee96/mehkee96.c
index 604fad803..46427ec93 100644
--- a/keyboards/mehkee96/mehkee96.c
+++ b/keyboards/mehkee96/mehkee96.c
@@ -16,66 +16,13 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "mehkee96.h"
-#include "rgblight.h"
 
-#include <avr/pgmspace.h>
+void matrix_init_kb(void) { matrix_init_user(); }
 
-#include "action_layer.h"
-#include "i2c.h"
-#include "quantum.h"
+__attribute__ ((weak))
+void matrix_init_user(void) {}
 
-// for keyboard subdirectory level init functions
-// @Override
-void matrix_init_kb(void) {
-  // call user level keymaps, if any
-  matrix_init_user();
-}
+void matrix_scan_kb(void) { matrix_scan_user(); }
 
-#ifdef RGBLIGHT_ENABLE
-extern rgblight_config_t rgblight_config;
-
-// custom RGB driver
-void rgblight_set(void) {
-  if (!rgblight_config.enable) {
-    for (uint8_t i=0; i<RGBLED_NUM; i++) {
-      led[i].r = 0;
-      led[i].g = 0;
-      led[i].b = 0;
-    }
-  }
-
-  i2c_init();
-  i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
-}
-
-bool rgb_init = false;
-
-void matrix_scan_kb(void) {
-  // if LEDs were previously on before poweroff, turn them back on
-  if (rgb_init == false && rgblight_config.enable) {
-    i2c_init();
-    i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
-    rgb_init = true;
-  }
-
-#ifdef RGBLIGHT_ANIMATION
-  rgblight_task();
-#endif
-
-#else
-void matrix_scan_kb(void) {
-#endif
-  matrix_scan_user();
-  /* Nothing else for now. */
-}
-
-__attribute__((weak)) // overridable
-void matrix_init_user(void) {
-
-}
-
-
-__attribute__((weak)) // overridable
-void matrix_scan_user(void) {
-
-}
+__attribute__ ((weak))
+void matrix_scan_user(void) {}
diff --git a/keyboards/mehkee96/rules.mk b/keyboards/mehkee96/rules.mk
index 244dd2141..1cbd02948 100644
--- a/keyboards/mehkee96/rules.mk
+++ b/keyboards/mehkee96/rules.mk
@@ -21,10 +21,10 @@ CONSOLE_ENABLE = yes	# Console for debug(+400)
 COMMAND_ENABLE = yes    # Commands for debug and configuration
 BACKLIGHT_ENABLE = no  # Enable keyboard backlight functionality
 RGBLIGHT_ENABLE = yes
-RGBLIGHT_CUSTOM_DRIVER = yes
+WS2812_DRIVER = i2c
 
 OPT_DEFS = -DDEBUG_LEVEL=0
 
 # custom matrix setup
 CUSTOM_MATRIX = yes
-SRC = matrix.c i2c.c
+SRC = matrix.c
diff --git a/keyboards/mt40/i2c.c b/keyboards/mt40/i2c.c
deleted file mode 100644
index c27f3e3d1..000000000
--- a/keyboards/mt40/i2c.c
+++ /dev/null
@@ -1,104 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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 <avr/io.h>
-#include <util/twi.h>
-
-#include "i2c.h"
-
-void i2c_set_bitrate(uint16_t bitrate_khz) {
-    uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz);
-    if (bitrate_div >= 16) {
-        bitrate_div = (bitrate_div - 16) / 2;
-    }
-    TWBR = bitrate_div;
-}
-
-void i2c_init(void) {
-    // set pull-up resistors on I2C bus pins
-    PORTC |= 0b11;
-
-    i2c_set_bitrate(400);
-
-    // enable TWI (two-wire interface)
-    TWCR |= (1 << TWEN);
-
-    // enable TWI interrupt and slave address ACK
-    TWCR |= (1 << TWIE);
-    TWCR |= (1 << TWEA);
-}
-
-uint8_t i2c_start(uint8_t address) {
-    // reset TWI control register
-    TWCR = 0;
-
-    // begin transmission and wait for it to end
-    TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    // check if the start condition was successfully transmitted
-    if ((TWSR & 0xF8) != TW_START) {
-        return 1;
-    }
-
-    // transmit address and wait
-    TWDR = address;
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    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;
-}
-
-void i2c_stop(void) {
-    TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
-}
-
-uint8_t i2c_write(uint8_t data) {
-    TWDR = data;
-
-    // transmit data and wait
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    if ((TWSR & 0xF8) != TW_MT_DATA_ACK) {
-        return 1;
-    }
-
-    return 0;
-}
-
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) {
-    if (i2c_start(address)) {
-        return 1;
-    }
-
-    for (uint16_t i = 0; i < length; i++) {
-        if (i2c_write(data[i])) {
-            return 1;
-        }
-    }
-
-    i2c_stop();
-
-    return 0;
-}
diff --git a/keyboards/mt40/i2c.h b/keyboards/mt40/i2c.h
deleted file mode 100644
index 27c9d3d05..000000000
--- a/keyboards/mt40/i2c.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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 __I2C_H__
-#define __I2C_H__
-
-void i2c_init(void);
-void i2c_set_bitrate(uint16_t bitrate_khz);
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length);
-
-#endif
diff --git a/keyboards/mt40/mt40.c b/keyboards/mt40/mt40.c
index 555689f87..dd079e7d8 100644
--- a/keyboards/mt40/mt40.c
+++ b/keyboards/mt40/mt40.c
@@ -13,32 +13,5 @@
  * 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 "mt40.h"
-#include "rgblight.h"
-
-#include <avr/pgmspace.h>
-
-#include "action_layer.h"
-#include "i2c.h"
-#include "quantum.h"
-
-extern rgblight_config_t rgblight_config;
 
-void rgblight_set(void) {
-    if (!rgblight_config.enable) {
-        for (uint8_t i = 0; i < RGBLED_NUM; i++) {
-            led[i].r = 0;
-            led[i].g = 0;
-            led[i].b = 0;
-        }
-    }
-
-    i2c_init();
-    i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
-}
-
-__attribute__ ((weak))
-void matrix_scan_kb(void) {
-    rgblight_task();
-    matrix_init_user();
-}
+#include "mt40.h"
diff --git a/keyboards/mt40/rules.mk b/keyboards/mt40/rules.mk
index 19410bc6e..0cbf90c67 100644
--- a/keyboards/mt40/rules.mk
+++ b/keyboards/mt40/rules.mk
@@ -24,14 +24,14 @@ AUDIO_ENABLE ?= no      # Audio output on port C6
 UNICODE_ENABLE ?= no    # Unicode
 BLUETOOTH_ENABLE ?= no  # Enable Bluetooth with the Adafruit EZ-Key HID
 RGBLIGHT_ENABLE ?= yes  # Enable WS2812 RGB underlight. 
-RGBLIGHT_CUSTOM_DRIVER = yes
+WS2812_DRIVER = i2c
 TAP_DANCE_ENABLE = no
 
 OPT_DEFS = -DDEBUG_LEVEL=0
 
 # custom matrix setup
 CUSTOM_MATRIX = yes
-SRC = matrix.c i2c.c
+SRC = matrix.c
 
 LAYOUTS = planck_mit
 LAYOUTS_HAS_RGB = no
diff --git a/keyboards/percent/canoe/canoe.c b/keyboards/percent/canoe/canoe.c
index a7427e152..e59b0dd7b 100644
--- a/keyboards/percent/canoe/canoe.c
+++ b/keyboards/percent/canoe/canoe.c
@@ -16,81 +16,43 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "canoe.h"
-#ifdef BACKLIGHT_ENABLE
-#include "backlight.h"
-#endif
-#ifdef RGBLIGHT_ENABLE
-#include "i2c.h"
-#include "rgblight.h"
-#endif
+
+void matrix_init_kb(void) { matrix_init_user(); }
+
+__attribute__ ((weak))
+void matrix_init_user(void) {}
+
+void matrix_scan_kb(void) { matrix_scan_user(); }
+
+__attribute__ ((weak))
+void matrix_scan_user(void) {}
 
 #ifdef BACKLIGHT_ENABLE
 void backlight_set(uint8_t level) {
 	if (level == 0) {
 		// Turn out the lights
-		PORTD &= ~(1<<0 | 1<<1 | 1<<4 | 1<<6);
+		writePinLow(D0);
+		writePinLow(D1);
+		writePinLow(D4);
+		writePinLow(D6);
 	} else {
 		// Turn on the lights
-		PORTD |= (1<<0 | 1<<1 | 1<<4 | 1<<6);
+		writePinHigh(D0);
+		writePinHigh(D1);
+		writePinHigh(D4);
+		writePinHigh(D6);
 	}
 }
 
 void backlight_init_ports(void) {
-	DDRD |= (1<<0 | 1<<1 | 1<<4 | 1<<6);
-	PORTD &= ~(1<<0 | 1<<1 | 1<<4 | 1<<6);
-}
-
-#endif
-
-// for keyboard subdirectory level init functions
-// @Override
-void matrix_init_kb(void) {
-  // call user level keymaps, if any
-  matrix_init_user();
-}
-
-#ifdef RGBLIGHT_ENABLE
-extern rgblight_config_t rgblight_config;
-
-// custom RGB driver
-void rgblight_set(void) {
-  if (!rgblight_config.enable) {
-    for (uint8_t i=0; i<RGBLED_NUM; i++) {
-      led[i].r = 0;
-      led[i].g = 0;
-      led[i].b = 0;
-    }
-  }
-
-  i2c_init();
-  i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
+	setPinOutput(D0);
+	setPinOutput(D1);
+	setPinOutput(D4);
+	setPinOutput(D6);
+
+	writePinLow(D0);
+	writePinLow(D1);
+	writePinLow(D4);
+	writePinLow(D6);
 }
-
-bool rgb_init = false;
-
-void matrix_scan_kb(void) {
-  // if LEDs were previously on before poweroff, turn them back on
-  if (rgb_init == false && rgblight_config.enable) {
-    i2c_init();
-    i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
-    rgb_init = true;
-  }
-
-  rgblight_task();
-#else
-void matrix_scan_kb(void) {
 #endif
-  matrix_scan_user();
-  /* Nothing else for now. */
-}
-
-__attribute__((weak)) // overridable
-void matrix_init_user(void) {
-
-}
-
-
-__attribute__((weak)) // overridable
-void matrix_scan_user(void) {
-
-}
diff --git a/keyboards/percent/canoe/i2c.c b/keyboards/percent/canoe/i2c.c
deleted file mode 100644
index a4f952135..000000000
--- a/keyboards/percent/canoe/i2c.c
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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/>.
-*/
-
-// Please do not modify this file 
-
-#include <avr/io.h>
-#include <util/twi.h>
-
-#include "i2c.h"
-
-void i2c_set_bitrate(uint16_t bitrate_khz) {
-    uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz);
-    if (bitrate_div >= 16) {
-        bitrate_div = (bitrate_div - 16) / 2;
-    }
-    TWBR = bitrate_div;
-}
-
-void i2c_init(void) {
-    // set pull-up resistors on I2C bus pins
-    PORTC |= 0b11;
-
-    i2c_set_bitrate(400);
-
-    // enable TWI (two-wire interface)
-    TWCR |= (1 << TWEN);
-
-    // enable TWI interrupt and slave address ACK
-    TWCR |= (1 << TWIE);
-    TWCR |= (1 << TWEA);
-}
-
-uint8_t i2c_start(uint8_t address) {
-    // reset TWI control register
-    TWCR = 0;
-
-    // begin transmission and wait for it to end
-    TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    // check if the start condition was successfully transmitted
-    if ((TWSR & 0xF8) != TW_START) {
-        return 1;
-    }
-
-    // transmit address and wait
-    TWDR = address;
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    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;
-}
-
-void i2c_stop(void) {
-    TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
-}
-
-uint8_t i2c_write(uint8_t data) {
-    TWDR = data;
-
-    // transmit data and wait
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    if ((TWSR & 0xF8) != TW_MT_DATA_ACK) {
-        return 1;
-    }
-
-    return 0;
-}
-
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) {
-    if (i2c_start(address)) {
-        return 1;
-    }
-
-    for (uint16_t i = 0; i < length; i++) {
-        if (i2c_write(data[i])) {
-            return 1;
-        }
-    }
-
-    i2c_stop();
-
-    return 0;
-}
diff --git a/keyboards/percent/canoe/i2c.h b/keyboards/percent/canoe/i2c.h
deleted file mode 100644
index 93a69c94d..000000000
--- a/keyboards/percent/canoe/i2c.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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/>.
-*/
-
-// Please do not modify this file 
-
-#ifndef __I2C_H__
-#define __I2C_H__
-
-void i2c_init(void);
-void i2c_set_bitrate(uint16_t bitrate_khz);
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length);
-
-#endif
diff --git a/keyboards/percent/canoe/rules.mk b/keyboards/percent/canoe/rules.mk
index e3269b94d..bb14269a2 100644
--- a/keyboards/percent/canoe/rules.mk
+++ b/keyboards/percent/canoe/rules.mk
@@ -1,18 +1,3 @@
-# Copyright 2017 Luiz Ribeiro <luizribeiro@gmail.com>
-#
-# 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/>.
-
 # MCU name
 MCU = atmega32a
 
@@ -34,12 +19,12 @@ CONSOLE_ENABLE = yes
 COMMAND_ENABLE = yes
 BACKLIGHT_ENABLE = no
 RGBLIGHT_ENABLE = yes
-RGBLIGHT_CUSTOM_DRIVER = yes
+WS2812_DRIVER = i2c
 
 OPT_DEFS = -DDEBUG_LEVEL=0
 
 # custom matrix setup
 CUSTOM_MATRIX = yes
-SRC = matrix.c i2c.c
+SRC = matrix.c
 
-LAYOUTS = 65_ansi_blocker
\ No newline at end of file
+LAYOUTS = 65_ansi_blocker
diff --git a/keyboards/percent/skog/i2c.c b/keyboards/percent/skog/i2c.c
deleted file mode 100644
index a4f952135..000000000
--- a/keyboards/percent/skog/i2c.c
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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/>.
-*/
-
-// Please do not modify this file 
-
-#include <avr/io.h>
-#include <util/twi.h>
-
-#include "i2c.h"
-
-void i2c_set_bitrate(uint16_t bitrate_khz) {
-    uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz);
-    if (bitrate_div >= 16) {
-        bitrate_div = (bitrate_div - 16) / 2;
-    }
-    TWBR = bitrate_div;
-}
-
-void i2c_init(void) {
-    // set pull-up resistors on I2C bus pins
-    PORTC |= 0b11;
-
-    i2c_set_bitrate(400);
-
-    // enable TWI (two-wire interface)
-    TWCR |= (1 << TWEN);
-
-    // enable TWI interrupt and slave address ACK
-    TWCR |= (1 << TWIE);
-    TWCR |= (1 << TWEA);
-}
-
-uint8_t i2c_start(uint8_t address) {
-    // reset TWI control register
-    TWCR = 0;
-
-    // begin transmission and wait for it to end
-    TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    // check if the start condition was successfully transmitted
-    if ((TWSR & 0xF8) != TW_START) {
-        return 1;
-    }
-
-    // transmit address and wait
-    TWDR = address;
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    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;
-}
-
-void i2c_stop(void) {
-    TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
-}
-
-uint8_t i2c_write(uint8_t data) {
-    TWDR = data;
-
-    // transmit data and wait
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    if ((TWSR & 0xF8) != TW_MT_DATA_ACK) {
-        return 1;
-    }
-
-    return 0;
-}
-
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) {
-    if (i2c_start(address)) {
-        return 1;
-    }
-
-    for (uint16_t i = 0; i < length; i++) {
-        if (i2c_write(data[i])) {
-            return 1;
-        }
-    }
-
-    i2c_stop();
-
-    return 0;
-}
diff --git a/keyboards/percent/skog/i2c.h b/keyboards/percent/skog/i2c.h
deleted file mode 100644
index ada8cc7bf..000000000
--- a/keyboards/percent/skog/i2c.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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/>.
-*/
-
-// Please do not modify this file 
-
-#pragma once
-
-void i2c_init(void);
-void i2c_set_bitrate(uint16_t bitrate_khz);
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length);
-
diff --git a/keyboards/percent/skog/rules.mk b/keyboards/percent/skog/rules.mk
index b8439906b..2b0c1154d 100644
--- a/keyboards/percent/skog/rules.mk
+++ b/keyboards/percent/skog/rules.mk
@@ -1,18 +1,3 @@
-# Copyright 2018 Jumail Mundekkat / MxBlue
-#
-# 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/>.
-
 # MCU name
 MCU = atmega32a
 
@@ -34,9 +19,9 @@ CONSOLE_ENABLE = yes
 COMMAND_ENABLE = yes
 BACKLIGHT_ENABLE = yes
 RGBLIGHT_ENABLE = yes
+WS2812_DRIVER = i2c
 
 BACKLIGHT_CUSTOM_DRIVER = yes
-RGBLIGHT_CUSTOM_DRIVER = yes
 
 OPT_DEFS = -DDEBUG_LEVEL=0
 
@@ -45,4 +30,4 @@ SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
 
 # custom matrix setup
 CUSTOM_MATRIX = yes
-SRC = matrix.c i2c.c backlight.c
+SRC = matrix.c backlight.c
diff --git a/keyboards/percent/skog/skog.c b/keyboards/percent/skog/skog.c
index 3d1eb0e1a..8678d483a 100644
--- a/keyboards/percent/skog/skog.c
+++ b/keyboards/percent/skog/skog.c
@@ -19,23 +19,18 @@ ps2avrGB support code by Kenneth A. (bminiex/.[ch])
 
 #include "skog.h"
 
-#include "rgblight.h"
+#include "backlight.h"
+#include "backlight_custom.h"
 
-#include <avr/pgmspace.h>
+void matrix_init_kb(void) { matrix_init_user(); }
 
-#include "action_layer.h"
-#include "i2c.h"
-#include "quantum.h"
+__attribute__ ((weak))
+void matrix_init_user(void) {}
 
-#include "backlight.h"
-#include "backlight_custom.h"
+void matrix_scan_kb(void) { matrix_scan_user(); }
 
-// for keyboard subdirectory level init functions
-// @Override
-void matrix_init_kb(void) {
-  // call user level keymaps, if any
-  matrix_init_user();
-}
+__attribute__ ((weak))
+void matrix_scan_user(void) {}
 
 #ifdef BACKLIGHT_ENABLE
 /// Overrides functions in `quantum.c`
@@ -51,48 +46,3 @@ void backlight_set(uint8_t level) {
   b_led_set(level);
 }
 #endif
-
-#ifdef RGBLIGHT_ENABLE
-extern rgblight_config_t rgblight_config;
-
-// custom RGB driver
-void rgblight_set(void) {
-  if (!rgblight_config.enable) {
-    for (uint8_t i=0; i<RGBLED_NUM; i++) {
-      led[i].r = 0;
-      led[i].g = 0;
-      led[i].b = 0;
-    }
-  }
-
-  i2c_init();
-  i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
-}
-
-bool rgb_init = false;
-
-void matrix_scan_kb(void) {
-  // if LEDs were previously on before poweroff, turn them back on
-  if (rgb_init == false && rgblight_config.enable) {
-    i2c_init();
-    i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
-    rgb_init = true;
-  }
-
-  rgblight_task();
-#else
-void matrix_scan_kb(void) {
-#endif
-  matrix_scan_user();
-  /* Nothing else for now. */
-}
-
-__attribute__((weak)) // overridable
-void matrix_init_user(void) {
-
-}
-
-__attribute__((weak)) // overridable
-void matrix_scan_user(void) {
-
-}
diff --git a/keyboards/winkeyless/bmini/bmini.c b/keyboards/winkeyless/bmini/bmini.c
index 35800358c..87a31d052 100644
--- a/keyboards/winkeyless/bmini/bmini.c
+++ b/keyboards/winkeyless/bmini/bmini.c
@@ -16,30 +16,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "bmini.h"
-#include "rgblight.h"
-
-#include <avr/pgmspace.h>
-
-#include "action_layer.h"
-#include "i2c.h"
-#include "quantum.h"
-
-extern rgblight_config_t rgblight_config;
-
-void rgblight_set(void) {
-    if (!rgblight_config.enable) {
-        for (uint8_t i = 0; i < RGBLED_NUM; i++) {
-            led[i].r = 0;
-            led[i].g = 0;
-            led[i].b = 0;
-        }
-    }
-
-    i2c_init();
-    i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
-}
 
 __attribute__ ((weak))
-void matrix_scan_user(void) {
-    rgblight_task();
-}
+void matrix_scan_user(void) {}
diff --git a/keyboards/winkeyless/bmini/i2c.c b/keyboards/winkeyless/bmini/i2c.c
deleted file mode 100644
index a4f952135..000000000
--- a/keyboards/winkeyless/bmini/i2c.c
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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/>.
-*/
-
-// Please do not modify this file 
-
-#include <avr/io.h>
-#include <util/twi.h>
-
-#include "i2c.h"
-
-void i2c_set_bitrate(uint16_t bitrate_khz) {
-    uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz);
-    if (bitrate_div >= 16) {
-        bitrate_div = (bitrate_div - 16) / 2;
-    }
-    TWBR = bitrate_div;
-}
-
-void i2c_init(void) {
-    // set pull-up resistors on I2C bus pins
-    PORTC |= 0b11;
-
-    i2c_set_bitrate(400);
-
-    // enable TWI (two-wire interface)
-    TWCR |= (1 << TWEN);
-
-    // enable TWI interrupt and slave address ACK
-    TWCR |= (1 << TWIE);
-    TWCR |= (1 << TWEA);
-}
-
-uint8_t i2c_start(uint8_t address) {
-    // reset TWI control register
-    TWCR = 0;
-
-    // begin transmission and wait for it to end
-    TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    // check if the start condition was successfully transmitted
-    if ((TWSR & 0xF8) != TW_START) {
-        return 1;
-    }
-
-    // transmit address and wait
-    TWDR = address;
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    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;
-}
-
-void i2c_stop(void) {
-    TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
-}
-
-uint8_t i2c_write(uint8_t data) {
-    TWDR = data;
-
-    // transmit data and wait
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    if ((TWSR & 0xF8) != TW_MT_DATA_ACK) {
-        return 1;
-    }
-
-    return 0;
-}
-
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) {
-    if (i2c_start(address)) {
-        return 1;
-    }
-
-    for (uint16_t i = 0; i < length; i++) {
-        if (i2c_write(data[i])) {
-            return 1;
-        }
-    }
-
-    i2c_stop();
-
-    return 0;
-}
diff --git a/keyboards/winkeyless/bmini/i2c.h b/keyboards/winkeyless/bmini/i2c.h
deleted file mode 100644
index 93a69c94d..000000000
--- a/keyboards/winkeyless/bmini/i2c.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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/>.
-*/
-
-// Please do not modify this file 
-
-#ifndef __I2C_H__
-#define __I2C_H__
-
-void i2c_init(void);
-void i2c_set_bitrate(uint16_t bitrate_khz);
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length);
-
-#endif
diff --git a/keyboards/winkeyless/bmini/rules.mk b/keyboards/winkeyless/bmini/rules.mk
index 8cfc81056..7822bd830 100644
--- a/keyboards/winkeyless/bmini/rules.mk
+++ b/keyboards/winkeyless/bmini/rules.mk
@@ -1,18 +1,3 @@
-# Copyright 2017 Luiz Ribeiro <luizribeiro@gmail.com>
-#
-# 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/>.
-
 # MCU name
 MCU = atmega32a
 
@@ -34,10 +19,10 @@ CONSOLE_ENABLE = yes
 COMMAND_ENABLE = yes
 BACKLIGHT_ENABLE = no
 RGBLIGHT_ENABLE = yes
-RGBLIGHT_CUSTOM_DRIVER = yes
+WS2812_DRIVER = i2c
 
 OPT_DEFS = -DDEBUG_LEVEL=0
 
 # custom matrix setup
 CUSTOM_MATRIX = yes
-SRC = matrix.c i2c.c
+SRC = matrix.c
diff --git a/keyboards/winkeyless/bminiex/bminiex.c b/keyboards/winkeyless/bminiex/bminiex.c
index d9b05aba5..11315b921 100644
--- a/keyboards/winkeyless/bminiex/bminiex.c
+++ b/keyboards/winkeyless/bminiex/bminiex.c
@@ -16,24 +16,10 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "bminiex.h"
-#include "rgblight.h"
-
-#include <avr/pgmspace.h>
-
-#include "action_layer.h"
-#include "i2c.h"
-#include "quantum.h"
 
 #include "backlight.h"
 #include "backlight_custom.h"
 
-// for keyboard subdirectory level init functions
-// @Override
-void matrix_init_kb(void) {
-  // call user level keymaps, if any
-  matrix_init_user();
-}
-
 #ifdef BACKLIGHT_ENABLE
 /// Overrides functions in `quantum.c`
 void backlight_init_ports(void) {
@@ -48,50 +34,3 @@ void backlight_set(uint8_t level) {
   b_led_set(level);
 }
 #endif
-
-#ifdef RGBLIGHT_ENABLE
-extern rgblight_config_t rgblight_config;
-
-// custom RGB driver
-void rgblight_set(void) {
-  if (!rgblight_config.enable) {
-    for (uint8_t i=0; i<RGBLED_NUM; i++) {
-      led[i].r = 0;
-      led[i].g = 0;
-      led[i].b = 0;
-    }
-  }
-
-  i2c_init();
-  i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
-}
-
-bool rgb_init = false;
-
-void matrix_scan_kb(void) {
-  // if LEDs were previously on before poweroff, turn them back on
-  if (rgb_init == false && rgblight_config.enable) {
-    i2c_init();
-    i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
-    rgb_init = true;
-  }
-
-  rgblight_task();
-#else
-void matrix_scan_kb(void) {
-#endif
-  matrix_scan_user();
-  /* Nothing else for now. */
-}
-
-__attribute__((weak)) // overridable
-void matrix_init_user(void) {
-
-}
-
-__attribute__((weak)) // overridable
-void matrix_scan_user(void) {
-
-}
-
-
diff --git a/keyboards/winkeyless/bminiex/i2c.c b/keyboards/winkeyless/bminiex/i2c.c
deleted file mode 100644
index a4f952135..000000000
--- a/keyboards/winkeyless/bminiex/i2c.c
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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/>.
-*/
-
-// Please do not modify this file 
-
-#include <avr/io.h>
-#include <util/twi.h>
-
-#include "i2c.h"
-
-void i2c_set_bitrate(uint16_t bitrate_khz) {
-    uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz);
-    if (bitrate_div >= 16) {
-        bitrate_div = (bitrate_div - 16) / 2;
-    }
-    TWBR = bitrate_div;
-}
-
-void i2c_init(void) {
-    // set pull-up resistors on I2C bus pins
-    PORTC |= 0b11;
-
-    i2c_set_bitrate(400);
-
-    // enable TWI (two-wire interface)
-    TWCR |= (1 << TWEN);
-
-    // enable TWI interrupt and slave address ACK
-    TWCR |= (1 << TWIE);
-    TWCR |= (1 << TWEA);
-}
-
-uint8_t i2c_start(uint8_t address) {
-    // reset TWI control register
-    TWCR = 0;
-
-    // begin transmission and wait for it to end
-    TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    // check if the start condition was successfully transmitted
-    if ((TWSR & 0xF8) != TW_START) {
-        return 1;
-    }
-
-    // transmit address and wait
-    TWDR = address;
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    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;
-}
-
-void i2c_stop(void) {
-    TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
-}
-
-uint8_t i2c_write(uint8_t data) {
-    TWDR = data;
-
-    // transmit data and wait
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    if ((TWSR & 0xF8) != TW_MT_DATA_ACK) {
-        return 1;
-    }
-
-    return 0;
-}
-
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) {
-    if (i2c_start(address)) {
-        return 1;
-    }
-
-    for (uint16_t i = 0; i < length; i++) {
-        if (i2c_write(data[i])) {
-            return 1;
-        }
-    }
-
-    i2c_stop();
-
-    return 0;
-}
diff --git a/keyboards/winkeyless/bminiex/i2c.h b/keyboards/winkeyless/bminiex/i2c.h
deleted file mode 100644
index ada8cc7bf..000000000
--- a/keyboards/winkeyless/bminiex/i2c.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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/>.
-*/
-
-// Please do not modify this file 
-
-#pragma once
-
-void i2c_init(void);
-void i2c_set_bitrate(uint16_t bitrate_khz);
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length);
-
diff --git a/keyboards/winkeyless/bminiex/rules.mk b/keyboards/winkeyless/bminiex/rules.mk
index 24e434879..39a77bda1 100644
--- a/keyboards/winkeyless/bminiex/rules.mk
+++ b/keyboards/winkeyless/bminiex/rules.mk
@@ -1,18 +1,3 @@
-# Copyright 2017 Luiz Ribeiro <luizribeiro@gmail.com>
-#
-# 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/>.
-
 # MCU name
 MCU = atmega32a
 
@@ -36,7 +21,7 @@ COMMAND_ENABLE = no
 BACKLIGHT_ENABLE = yes
 BACKLIGHT_CUSTOM_DRIVER = yes
 RGBLIGHT_ENABLE = yes
-RGBLIGHT_CUSTOM_DRIVER = yes
+WS2812_DRIVER = i2c
 TAP_DANCE_ENABLE = no
 
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
@@ -46,4 +31,4 @@ OPT_DEFS = -DDEBUG_LEVEL=0
 
 # custom matrix setup
 CUSTOM_MATRIX = yes
-SRC = matrix.c i2c.c backlight.c
+SRC = matrix.c backlight.c
diff --git a/keyboards/ymd75/i2c.c b/keyboards/ymd75/i2c.c
deleted file mode 100644
index c27f3e3d1..000000000
--- a/keyboards/ymd75/i2c.c
+++ /dev/null
@@ -1,104 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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 <avr/io.h>
-#include <util/twi.h>
-
-#include "i2c.h"
-
-void i2c_set_bitrate(uint16_t bitrate_khz) {
-    uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz);
-    if (bitrate_div >= 16) {
-        bitrate_div = (bitrate_div - 16) / 2;
-    }
-    TWBR = bitrate_div;
-}
-
-void i2c_init(void) {
-    // set pull-up resistors on I2C bus pins
-    PORTC |= 0b11;
-
-    i2c_set_bitrate(400);
-
-    // enable TWI (two-wire interface)
-    TWCR |= (1 << TWEN);
-
-    // enable TWI interrupt and slave address ACK
-    TWCR |= (1 << TWIE);
-    TWCR |= (1 << TWEA);
-}
-
-uint8_t i2c_start(uint8_t address) {
-    // reset TWI control register
-    TWCR = 0;
-
-    // begin transmission and wait for it to end
-    TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    // check if the start condition was successfully transmitted
-    if ((TWSR & 0xF8) != TW_START) {
-        return 1;
-    }
-
-    // transmit address and wait
-    TWDR = address;
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    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;
-}
-
-void i2c_stop(void) {
-    TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
-}
-
-uint8_t i2c_write(uint8_t data) {
-    TWDR = data;
-
-    // transmit data and wait
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    if ((TWSR & 0xF8) != TW_MT_DATA_ACK) {
-        return 1;
-    }
-
-    return 0;
-}
-
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) {
-    if (i2c_start(address)) {
-        return 1;
-    }
-
-    for (uint16_t i = 0; i < length; i++) {
-        if (i2c_write(data[i])) {
-            return 1;
-        }
-    }
-
-    i2c_stop();
-
-    return 0;
-}
diff --git a/keyboards/ymd75/i2c.h b/keyboards/ymd75/i2c.h
deleted file mode 100644
index 27c9d3d05..000000000
--- a/keyboards/ymd75/i2c.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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 __I2C_H__
-#define __I2C_H__
-
-void i2c_init(void);
-void i2c_set_bitrate(uint16_t bitrate_khz);
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length);
-
-#endif
diff --git a/keyboards/ymd75/rules.mk b/keyboards/ymd75/rules.mk
index 7bee20173..0c1c9110c 100644
--- a/keyboards/ymd75/rules.mk
+++ b/keyboards/ymd75/rules.mk
@@ -1,19 +1,3 @@
-# Copyright 2017 Luiz Ribeiro <luizribeiro@gmail.com>
-# Modified 2018 Wayne Jones (WarmCatUK) <waynekjones@gmail.com>
-
-# 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/>.
-
 # MCU name
 MCU = atmega32a
 
@@ -35,7 +19,7 @@ CONSOLE_ENABLE = no
 COMMAND_ENABLE = yes
 BACKLIGHT_ENABLE = yes
 RGBLIGHT_ENABLE = yes
-RGBLIGHT_CUSTOM_DRIVER = yes
+WS2812_DRIVER = i2c
 NKRO_ENABLE = no
 # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
 
@@ -51,4 +35,4 @@ SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
 
 # custom matrix setup
 CUSTOM_MATRIX = yes
-SRC = matrix.c i2c.c backlight.c
+SRC = matrix.c backlight.c
diff --git a/keyboards/ymd75/ymd75.c b/keyboards/ymd75/ymd75.c
index 2259dfa5f..74f7c6a49 100644
--- a/keyboards/ymd75/ymd75.c
+++ b/keyboards/ymd75/ymd75.c
@@ -16,23 +16,19 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "ymd75.h"
-//#include "rgblight.h"
-
-#include <avr/pgmspace.h>
-
-#include "action_layer.h"
-#include "i2c.h"
-#include "quantum.h"
 
 #include "backlight.h"
 #include "backlight_custom.h"
 
-// for keyboard subdirectory level init functions
-// @Override
-void matrix_init_kb(void) {
-    // call user level keymaps, if any
-    matrix_init_user();
-}
+void matrix_init_kb(void) { matrix_init_user(); }
+
+__attribute__ ((weak))
+void matrix_init_user(void) {}
+
+void matrix_scan_kb(void) { matrix_scan_user(); }
+
+__attribute__ ((weak))
+void matrix_scan_user(void) {}
 
 #ifdef BACKLIGHT_ENABLE
 /// Overrides functions in `quantum.c`
@@ -48,48 +44,3 @@ void backlight_set(uint8_t level) {
     b_led_set(level);
 }
 #endif
-
-#ifdef RGBLIGHT_ENABLE
-extern rgblight_config_t rgblight_config;
-
-// custom RGB driver
-void rgblight_set(void) {
-    if (!rgblight_config.enable) {
-        for (uint8_t i=0; i<RGBLED_NUM; i++) {
-            led[i].r = 0;
-            led[i].g = 0;
-            led[i].b = 0;
-        }
-    }
-    
-    i2c_init();
-    i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
-}
-
-bool rgb_init = false;
-
-void matrix_scan_kb(void) {
-    // if LEDs were previously on before poweroff, turn them back on
-    if (rgb_init == false && rgblight_config.enable) {
-        i2c_init();
-        i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
-        rgb_init = true;
-    }
-    
-    rgblight_task();
-#else
-    void matrix_scan_kb(void) {
-#endif
-        matrix_scan_user();
-        /* Nothing else for now. */
-    }
-    
-    __attribute__((weak)) // overridable
-    void matrix_init_user(void) {
-        
-    }
-    
-    __attribute__((weak)) // overridable
-    void matrix_scan_user(void) {
-        
-    }
diff --git a/keyboards/ymd96/i2c.c b/keyboards/ymd96/i2c.c
deleted file mode 100644
index c27f3e3d1..000000000
--- a/keyboards/ymd96/i2c.c
+++ /dev/null
@@ -1,104 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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 <avr/io.h>
-#include <util/twi.h>
-
-#include "i2c.h"
-
-void i2c_set_bitrate(uint16_t bitrate_khz) {
-    uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz);
-    if (bitrate_div >= 16) {
-        bitrate_div = (bitrate_div - 16) / 2;
-    }
-    TWBR = bitrate_div;
-}
-
-void i2c_init(void) {
-    // set pull-up resistors on I2C bus pins
-    PORTC |= 0b11;
-
-    i2c_set_bitrate(400);
-
-    // enable TWI (two-wire interface)
-    TWCR |= (1 << TWEN);
-
-    // enable TWI interrupt and slave address ACK
-    TWCR |= (1 << TWIE);
-    TWCR |= (1 << TWEA);
-}
-
-uint8_t i2c_start(uint8_t address) {
-    // reset TWI control register
-    TWCR = 0;
-
-    // begin transmission and wait for it to end
-    TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    // check if the start condition was successfully transmitted
-    if ((TWSR & 0xF8) != TW_START) {
-        return 1;
-    }
-
-    // transmit address and wait
-    TWDR = address;
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    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;
-}
-
-void i2c_stop(void) {
-    TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
-}
-
-uint8_t i2c_write(uint8_t data) {
-    TWDR = data;
-
-    // transmit data and wait
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    if ((TWSR & 0xF8) != TW_MT_DATA_ACK) {
-        return 1;
-    }
-
-    return 0;
-}
-
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) {
-    if (i2c_start(address)) {
-        return 1;
-    }
-
-    for (uint16_t i = 0; i < length; i++) {
-        if (i2c_write(data[i])) {
-            return 1;
-        }
-    }
-
-    i2c_stop();
-
-    return 0;
-}
diff --git a/keyboards/ymd96/i2c.h b/keyboards/ymd96/i2c.h
deleted file mode 100644
index 27c9d3d05..000000000
--- a/keyboards/ymd96/i2c.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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 __I2C_H__
-#define __I2C_H__
-
-void i2c_init(void);
-void i2c_set_bitrate(uint16_t bitrate_khz);
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length);
-
-#endif
diff --git a/keyboards/ymd96/rules.mk b/keyboards/ymd96/rules.mk
index 96441e1b3..19d9fd81a 100644
--- a/keyboards/ymd96/rules.mk
+++ b/keyboards/ymd96/rules.mk
@@ -1,18 +1,3 @@
-# Copyright 2017 Luiz Ribeiro <luizribeiro@gmail.com>
-#
-# 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/>.
-
 # MCU name
 MCU = atmega32a
 
@@ -37,7 +22,7 @@ BACKLIGHT_ENABLE = yes
 BACKLIGHT_CUSTOM_DRIVER = yes
 
 RGBLIGHT_ENABLE = yes
-RGBLIGHT_CUSTOM_DRIVER = yes
+WS2812_DRIVER = i2c
 
 KEY_LOCK_ENABLE = yes
 
@@ -48,4 +33,4 @@ OPT_DEFS = -DDEBUG_LEVEL=0
 
 # custom matrix setup
 CUSTOM_MATRIX = yes
-SRC = matrix.c i2c.c backlight.c
+SRC = matrix.c backlight.c
diff --git a/keyboards/ymd96/ymd96.c b/keyboards/ymd96/ymd96.c
index b0bf6128f..546a4c6e3 100644
--- a/keyboards/ymd96/ymd96.c
+++ b/keyboards/ymd96/ymd96.c
@@ -18,22 +18,18 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #include "ymd96.h"
 
-#include <avr/pgmspace.h>
+#include "backlight.h"
+#include "backlight_custom.h"
 
-#include "action_layer.h"
-#include "quantum.h"
+void matrix_init_kb(void) { matrix_init_user(); }
 
-#include "i2c.h"
+__attribute__ ((weak))
+void matrix_init_user(void) {}
 
-#include "backlight.h"
-#include "backlight_custom.h"
+void matrix_scan_kb(void) { matrix_scan_user(); }
 
-// for keyboard subdirectory level init functions
-// @Override
-void matrix_init_kb(void) {
-  // call user level keymaps, if any
-  matrix_init_user();
-}
+__attribute__ ((weak))
+void matrix_scan_user(void) {}
 
 #ifdef BACKLIGHT_ENABLE
 /// Overrides functions in `quantum.c`
@@ -49,49 +45,3 @@ void backlight_set(uint8_t level) {
   b_led_set(level);
 }
 #endif
-
-#ifdef RGBLIGHT_ENABLE
-extern rgblight_config_t rgblight_config;
-
-// custom RGB driver
-void rgblight_set(void) {
-  if (!rgblight_config.enable) {
-    for (uint8_t i=0; i<RGBLED_NUM; i++) {
-      led[i].r = 0;
-      led[i].g = 0;
-      led[i].b = 0;
-    }
-  }
-
-  i2c_init();
-  i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
-}
-
-bool rgb_init = false;
-
-void matrix_scan_kb(void) {
-  // if LEDs were previously on before poweroff, turn them back on
-  if (rgb_init == false && rgblight_config.enable) {
-    i2c_init();
-    i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
-    rgb_init = true;
-  }
-
-  rgblight_task();
-#else
-void matrix_scan_kb(void) {
-#endif
-  matrix_scan_user();
-  /* Nothing else for now. */
-}
-
-__attribute__((weak)) // overridable
-void matrix_init_user(void) {
-
-}
-
-
-__attribute__((weak)) // overridable
-void matrix_scan_user(void) {
-
-}
diff --git a/keyboards/ymdk_np21/i2c.c b/keyboards/ymdk_np21/i2c.c
deleted file mode 100644
index c27f3e3d1..000000000
--- a/keyboards/ymdk_np21/i2c.c
+++ /dev/null
@@ -1,104 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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 <avr/io.h>
-#include <util/twi.h>
-
-#include "i2c.h"
-
-void i2c_set_bitrate(uint16_t bitrate_khz) {
-    uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz);
-    if (bitrate_div >= 16) {
-        bitrate_div = (bitrate_div - 16) / 2;
-    }
-    TWBR = bitrate_div;
-}
-
-void i2c_init(void) {
-    // set pull-up resistors on I2C bus pins
-    PORTC |= 0b11;
-
-    i2c_set_bitrate(400);
-
-    // enable TWI (two-wire interface)
-    TWCR |= (1 << TWEN);
-
-    // enable TWI interrupt and slave address ACK
-    TWCR |= (1 << TWIE);
-    TWCR |= (1 << TWEA);
-}
-
-uint8_t i2c_start(uint8_t address) {
-    // reset TWI control register
-    TWCR = 0;
-
-    // begin transmission and wait for it to end
-    TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    // check if the start condition was successfully transmitted
-    if ((TWSR & 0xF8) != TW_START) {
-        return 1;
-    }
-
-    // transmit address and wait
-    TWDR = address;
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    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;
-}
-
-void i2c_stop(void) {
-    TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
-}
-
-uint8_t i2c_write(uint8_t data) {
-    TWDR = data;
-
-    // transmit data and wait
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    if ((TWSR & 0xF8) != TW_MT_DATA_ACK) {
-        return 1;
-    }
-
-    return 0;
-}
-
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) {
-    if (i2c_start(address)) {
-        return 1;
-    }
-
-    for (uint16_t i = 0; i < length; i++) {
-        if (i2c_write(data[i])) {
-            return 1;
-        }
-    }
-
-    i2c_stop();
-
-    return 0;
-}
diff --git a/keyboards/ymdk_np21/i2c.h b/keyboards/ymdk_np21/i2c.h
deleted file mode 100644
index 27c9d3d05..000000000
--- a/keyboards/ymdk_np21/i2c.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com>
-
-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 __I2C_H__
-#define __I2C_H__
-
-void i2c_init(void);
-void i2c_set_bitrate(uint16_t bitrate_khz);
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length);
-
-#endif
diff --git a/keyboards/ymdk_np21/rules.mk b/keyboards/ymdk_np21/rules.mk
index 634b9c69c..2bab3043e 100644
--- a/keyboards/ymdk_np21/rules.mk
+++ b/keyboards/ymdk_np21/rules.mk
@@ -1,18 +1,3 @@
-# Copyright 2017 Luiz Ribeiro <luizribeiro@gmail.com>
-#
-# 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/>.
-
 # MCU name
 MCU = atmega32a
 
@@ -37,8 +22,7 @@ BACKLIGHT_ENABLE = yes
 BACKLIGHT_CUSTOM_DRIVER = yes
 
 RGBLIGHT_ENABLE = yes
-RGBLIGHT_CUSTOM_DRIVER = yes
-# DISABLE_WS2812 = no
+WS2812_DRIVER = i2c
 
 KEY_LOCK_ENABLE = yes
 
@@ -49,4 +33,4 @@ OPT_DEFS = -DDEBUG_LEVEL=0
 
 # custom matrix setup
 CUSTOM_MATRIX = yes
-SRC = matrix.c i2c.c backlight.c
+SRC = matrix.c backlight.c
diff --git a/keyboards/ymdk_np21/ymdk_np21.c b/keyboards/ymdk_np21/ymdk_np21.c
index c1b11b404..f2b3d46da 100644
--- a/keyboards/ymdk_np21/ymdk_np21.c
+++ b/keyboards/ymdk_np21/ymdk_np21.c
@@ -18,25 +18,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #include "ymdk_np21.h"
 
-#include <avr/pgmspace.h>
-
-#include "action_layer.h"
-#include "quantum.h"
-
-#include "i2c.h"
-
 #include "backlight.h"
 #include "backlight_custom.h"
 
-extern rgblight_config_t rgblight_config;
-
-// for keyboard subdirectory level init functions
-// @Override
-void matrix_init_kb(void) {
-  // call user level keymaps, if any
-  matrix_init_user();
-}
-
 #ifdef BACKLIGHT_ENABLE
 /// Overrides functions in `quantum.c`
 void backlight_init_ports(void) {
@@ -51,32 +35,3 @@ void backlight_set(uint8_t level) {
   b_led_set(level);
 }
 #endif
-
-// custom RGB driver
-void rgblight_set(void) {
-  if (!rgblight_config.enable) {
-    for (uint8_t i=0; i<RGBLED_NUM; i++) {
-      led[i].r = 0;
-      led[i].g = 0;
-      led[i].b = 0;
-    }
-  }
-
-  i2c_init();
-  i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
-}
-
-bool rgb_init = false;
-void matrix_scan_kb(void) {
-  // if LEDs were previously on before poweroff, turn them back on
-  if (rgb_init == false && rgblight_config.enable) {
-    i2c_init();
-    i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
-    rgb_init = true;
-  }
-
-  rgblight_task();
-  /* Nothing else for now. */
-
-  matrix_scan_user();
-}