Unify RGB and RGBW commands (#7297)

* Fix unicode in comments

Co-Authored-By: fauxpark <fauxpark@gmail.com>

* Remove separate RGBW implementation for a unified function

* Set White to 0 in RGBW LEDs

This is just to get this working, later, proper brightness can be handled elsewhere.

* Use us instead of nanoseconds(?) since it renders correctly on web

* Remove RGBW function from arm/ws2812.h

* Remove RGBW function from arm/ws2812.c

* Formatting changes

* Add doc info

2 files changed, 27 insertions, 4 deletions

diff --git a/quantum/rgb_matrix_drivers.c b/quantum/rgb_matrix_drivers.c
index 503f97014f..9729a3064e 100644
--- a/quantum/rgb_matrix_drivers.c
+++ b/quantum/rgb_matrix_drivers.c
@@ -112,6 +112,9 @@ static inline void setled(int i, uint8_t r, uint8_t g, uint8_t b) {
     led[i].r = r;
     led[i].g = g;
     led[i].b = b;
+#    ifdef RGBW
+    led[i].w = 0;
+#    endif
 }
 
 static void setled_all(uint8_t r, uint8_t g, uint8_t b) {
diff --git a/quantum/rgblight.c b/quantum/rgblight.c
index 1c197827f2..a4cbe513e1 100644
--- a/quantum/rgblight.c
+++ b/quantum/rgblight.c
@@ -126,6 +126,9 @@ void setrgb(uint8_t r, uint8_t g, uint8_t b, LED_TYPE *led1) {
     (*led1).r = r;
     (*led1).g = g;
     (*led1).b = b;
+#ifdef RGBW
+    (*led1).w = 0;
+#endif
 }
 
 void rgblight_check_config(void) {
@@ -514,6 +517,9 @@ void rgblight_setrgb(uint8_t r, uint8_t g, uint8_t b) {
         led[i].r = r;
         led[i].g = g;
         led[i].b = b;
+#ifdef RGBW
+        led[i].w = 0;
+#endif
     }
     rgblight_set();
 }
@@ -526,6 +532,9 @@ void rgblight_setrgb_at(uint8_t r, uint8_t g, uint8_t b, uint8_t index) {
     led[index].r = r;
     led[index].g = g;
     led[index].b = b;
+#ifdef RGBW
+    led[index].w = 0;
+#endif
     rgblight_set();
 }
 
@@ -560,6 +569,9 @@ void rgblight_setrgb_range(uint8_t r, uint8_t g, uint8_t b, uint8_t start, uint8
         led[i].r = r;
         led[i].g = g;
         led[i].b = b;
+#ifdef RGBW
+        led[i].w = 0;
+#endif
     }
     rgblight_set();
     wait_ms(1);
@@ -595,6 +607,9 @@ void rgblight_set(void) {
             led[i].r = 0;
             led[i].g = 0;
             led[i].b = 0;
+#    ifdef RGBW
+            led[i].w = 0;
+#    endif
         }
     }
 #    ifdef RGBLIGHT_LED_MAP
@@ -606,11 +621,7 @@ void rgblight_set(void) {
 #    else
     start_led = led + clipping_start_pos;
 #    endif
-#    ifdef RGBW
-    ws2812_setleds_rgbw(start_led, num_leds);
-#    else
     ws2812_setleds(start_led, num_leds);
-#    endif
 }
 #endif
 
@@ -908,6 +919,9 @@ void rgblight_effect_snake(animation_status_t *anim) {
         ledp->r        = 0;
         ledp->g        = 0;
         ledp->b        = 0;
+#    ifdef RGBW
+        ledp->w        = 0;
+#    endif
         for (j = 0; j < RGBLIGHT_EFFECT_SNAKE_LENGTH; j++) {
             k = pos + j * increment;
             if (k > RGBLED_NUM) {
@@ -965,6 +979,9 @@ void rgblight_effect_knight(animation_status_t *anim) {
         led[i].r = 0;
         led[i].g = 0;
         led[i].b = 0;
+#    ifdef RGBW
+        led[i].w = 0;
+#    endif
     }
     // Determine which LEDs should be lit up
     for (i = 0; i < RGBLIGHT_EFFECT_KNIGHT_LED_NUM; i++) {
@@ -976,6 +993,9 @@ void rgblight_effect_knight(animation_status_t *anim) {
             led[cur].r = 0;
             led[cur].g = 0;
             led[cur].b = 0;
+#    ifdef RGBW
+            led[cur].w = 0;
+#    endif
         }
     }
     rgblight_set();