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

4 files changed, 10 insertions, 206 deletions

diff --git a/keyboards/percent/skog/i2c.c b/keyboards/percent/skog/i2c.c
deleted file mode 100644
index a4f9521352..0000000000
--- 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 ada8cc7bf1..0000000000
--- 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 b8439906b8..2b0c1154dd 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 3d1eb0e1a1..8678d483a7 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) {
-
-}