Move Ergodox EZ RGB Light code to custom driver (#7309)

* Move Ergodox EZ RGB code to custom driver

Also implements full addressing of Ergodox EZ's LED Strip, as written by seebs
Co-authored-by: Seebs <seebs@seebs.net>

* Make Clipping range accessible for custom drivers

* Remove RGBW_BB_TWI from driver and docs

* Revert changes to clipping range support

* Use just rgblight_set instead of full custom driver

* Convert to i2c_master commands

* Rename rgblight driver and clean up includes

1 files changed, 2 insertions, 127 deletions

diff --git a/drivers/avr/ws2812.c b/drivers/avr/ws2812.c
index dc7e8d48a..82d985c20 100644
--- a/drivers/avr/ws2812.c
+++ b/drivers/avr/ws2812.c
@@ -36,108 +36,6 @@
 void ws2812_sendarray(uint8_t *array, uint16_t length);
 void ws2812_sendarray_mask(uint8_t *array, uint16_t length, uint8_t pinmask);
 
-#ifdef RGBW_BB_TWI
-
-// Port for the I2C
-#    define I2C_DDR DDRD
-#    define I2C_PIN PIND
-#    define I2C_PORT PORTD
-
-// Pins to be used in the bit banging
-#    define I2C_CLK 0
-#    define I2C_DAT 1
-
-#    define I2C_DATA_HI()           \
-        I2C_DDR &= ~(1 << I2C_DAT); \
-        I2C_PORT |= (1 << I2C_DAT);
-#    define I2C_DATA_LO()          \
-        I2C_DDR |= (1 << I2C_DAT); \
-        I2C_PORT &= ~(1 << I2C_DAT);
-
-#    define I2C_CLOCK_HI()          \
-        I2C_DDR &= ~(1 << I2C_CLK); \
-        I2C_PORT |= (1 << I2C_CLK);
-#    define I2C_CLOCK_LO()         \
-        I2C_DDR |= (1 << I2C_CLK); \
-        I2C_PORT &= ~(1 << I2C_CLK);
-
-#    define I2C_DELAY 1
-
-void I2C_WriteBit(unsigned char c) {
-    if (c > 0) {
-        I2C_DATA_HI();
-    } else {
-        I2C_DATA_LO();
-    }
-
-    I2C_CLOCK_HI();
-    _delay_us(I2C_DELAY);
-
-    I2C_CLOCK_LO();
-    _delay_us(I2C_DELAY);
-
-    if (c > 0) {
-        I2C_DATA_LO();
-    }
-
-    _delay_us(I2C_DELAY);
-}
-
-// Inits bitbanging port, must be called before using the functions below
-//
-void I2C_Init(void) {
-    I2C_PORT &= ~((1 << I2C_DAT) | (1 << I2C_CLK));
-
-    I2C_CLOCK_HI();
-    I2C_DATA_HI();
-
-    _delay_us(I2C_DELAY);
-}
-
-// Send a START Condition
-//
-void I2C_Start(void) {
-    // set both to high at the same time
-    I2C_DDR &= ~((1 << I2C_DAT) | (1 << I2C_CLK));
-    _delay_us(I2C_DELAY);
-
-    I2C_DATA_LO();
-    _delay_us(I2C_DELAY);
-
-    I2C_CLOCK_LO();
-    _delay_us(I2C_DELAY);
-}
-
-// Send a STOP Condition
-//
-void I2C_Stop(void) {
-    I2C_CLOCK_HI();
-    _delay_us(I2C_DELAY);
-
-    I2C_DATA_HI();
-    _delay_us(I2C_DELAY);
-}
-
-// write a byte to the I2C slave device
-//
-unsigned char I2C_Write(unsigned char c) {
-    for (char i = 0; i < 8; i++) {
-        I2C_WriteBit(c & 128);
-
-        c <<= 1;
-    }
-
-    I2C_WriteBit(0);
-    _delay_us(I2C_DELAY);
-    _delay_us(I2C_DELAY);
-
-    // _delay_us(I2C_DELAY);
-    // return I2C_ReadBit();
-    return 0;
-}
-
-#endif
-
 // Setleds for standard RGB
 void inline ws2812_setleds(LED_TYPE *ledarray, uint16_t leds) {
     // ws2812_setleds_pin(ledarray,leds, _BV(ws2812_pin));
@@ -145,38 +43,15 @@ void inline ws2812_setleds(LED_TYPE *ledarray, uint16_t leds) {
 }
 
 void inline ws2812_setleds_pin(LED_TYPE *ledarray, uint16_t leds, uint8_t pinmask) {
-#ifdef RGBW_BB_TWI
-    uint8_t sreg_prev, twcr_prev;
-    sreg_prev = SREG;
-    twcr_prev = TWCR;
-    cli();
-    TWCR &= ~(1 << TWEN);
-    I2C_Init();
-    I2C_Start();
-    I2C_Write(0x84);
-    uint16_t datlen = leds << 2;
-    uint8_t  curbyte;
-    uint8_t *data = (uint8_t *)ledarray;
-    while (datlen--) {
-        curbyte = *data++;
-        I2C_Write(curbyte);
-    }
-    I2C_Stop();
-    SREG = sreg_prev;
-    TWCR = twcr_prev;
-#endif
-    // ws2812_DDRREG |= pinmask; // Enable DDR
     // new universal format (DDR)
     _SFR_IO8((RGB_DI_PIN >> 4) + 1) |= pinmask;
 
     ws2812_sendarray_mask((uint8_t *)ledarray, leds * sizeof(LED_TYPE), pinmask);
 
-#ifndef RGBW_BB_TWI
-#    ifdef RGBW
+#ifdef RGBW
     _delay_us(80);
-#    else
+#else
     _delay_us(50);
-#    endif
 #endif
 }