Add hardware keyboard color handling

src/board/system76/common/kbled.c

@@ -0,0 +1,54 @@
+#include <board/kbled.h>
+#include <common/macro.h>
+
+static int LEVEL_I = 1;
+static const uint8_t __code LEVELS[] = {
+    48,
+    72,
+    96,
+    144,
+    192,
+    255
+};
+
+static int COLOR_I = 0;
+static const uint32_t __code COLORS[] = {
+    0xFFFFFF,
+    0x0000FF,
+    0xFF0000,
+    0xFF00FF,
+    0x00FF00,
+    0x00FFFF,
+    0xFFFF00
+};
+
+void kbled_hotkey_color(void) {
+    if (COLOR_I < (ARRAY_SIZE(COLORS) - 1)) {
+        COLOR_I += 1;
+    } else {
+        COLOR_I = 0;
+    }
+    kbled_set_color(COLORS[COLOR_I]);
+}
+
+void kbled_hotkey_down(void) {
+    if (LEVEL_I > 0) {
+        LEVEL_I -= 1;
+    }
+    kbled_set(LEVELS[LEVEL_I]);
+}
+
+void kbled_hotkey_up(void) {
+    if (LEVEL_I < (ARRAY_SIZE(LEVELS) - 1)) {
+        LEVEL_I += 1;
+    }
+    kbled_set(LEVELS[LEVEL_I]);
+}
+
+void kbled_hotkey_toggle(void) {
+    if (kbled_get() == 0) {
+        kbled_set(LEVELS[LEVEL_I]);
+    } else {
+        kbled_set(0);
+    }
+}