[Keyboard] Fix RGBKB Pan Rev1 Encoder RGB handling (#13781)

keyboards/rgbkb/pan/pan.c

@@ -17,8 +17,54 @@
 #include "quantum.h"
 #include "rgb_matrix_types.h"
 
-
 #if defined RGB_MATRIX_ENABLE
+#    if defined(KEYBOARD_rgbkb_pan_rev1)
+#        include "ws2812.h"
+
+// LED color buffer
+LED_TYPE rgb_matrix_ws2812_array[DRIVER_LED_TOTAL];
+
+static void init(void) {}
+
+static void flush(void) {
+    // Assumes use of RGB_DI_PIN
+    ws2812_setleds(rgb_matrix_ws2812_array, DRIVER_LED_TOTAL);
+}
+
+// Set an led in the buffer to a color
+static inline void setled(int i, uint8_t r, uint8_t g, uint8_t b) {
+#        if defined(RGB_ENCODERS) || defined(STAGGERED_RGB_ENCODERS)
+    if (i == 0 || i == 1) {  // if encoder LEDs, change LEDs
+        rgb_matrix_ws2812_array[i].r = g;
+        rgb_matrix_ws2812_array[i].g = b;
+        rgb_matrix_ws2812_array[i].b = r;
+    } else
+#        endif
+    {
+        rgb_matrix_ws2812_array[i].r = r;
+        rgb_matrix_ws2812_array[i].g = g;
+        rgb_matrix_ws2812_array[i].b = b;
+    }
+#        ifdef RGBW
+    convert_rgb_to_rgbw(&rgb_matrix_ws2812_array[i]);
+#        endif
+}
+
+static void setled_all(uint8_t r, uint8_t g, uint8_t b) {
+    for (int i = 0; i < sizeof(rgb_matrix_ws2812_array) / sizeof(rgb_matrix_ws2812_array[0]); i++) {
+        setled(i, r, g, b);
+    }
+}
+
+const rgb_matrix_driver_t rgb_matrix_driver = {
+    .init          = init,
+    .flush         = flush,
+    .set_color     = setled,
+    .set_color_all = setled_all,
+};
+#    endif
+
+// clang-format off
     led_config_t g_led_config = { {
        { 2,  3,  4,  5,  6,  7,  8,  9,  10, 11, 12, 13, 14 },
        { 0, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15 },
@@ -85,4 +131,5 @@
         1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
 #    endif
     } };
+// clang-format on
 #endif

keyboards/rgbkb/pan/rev1/rules.mk

@@ -1,2 +1,5 @@
 # The default configuration is a atmega32a
 DEFAULT_FOLDER = rgbkb/pan/rev1/32a
+
+RGB_MATRIX_DRIVER = custom
+WS2812_DRIVER_REQUIRED := yes