[Keymap] Drashna updates for 0.19 (#19175)

* Fix up bastardkb boards since blackpill support is officially added.
  * Check for blackpill version, not elite c.
  * Add checks in chibiOS config since multiple ARM controllers supported.
  * Rework rules.mk for keymaps to better handle arm vs avr support
* Start moving away from `matrix_*_*` functions.
  * `housekeeping_task_*` instead of `matrix_scan_*`
  * `keyboard_(pre|post)_init_*` instead of `matrix_init_*` 
* Add ℂℴmⅈℂ unicode input method.
* Clean up unicode code to be more compact and flexible.
* Remove/move Pro Micro LED commands to userspace and better filter them
* Fixup OLED code
  * Use newer quantum keycode functions/preprocessors rather than manual bit manipulation
  * Make unicode mode render much more compact/simple.
* Make qmk secrets more self contained
* Remove custom implementation of split watchdog

keyboards/keebio/iris/keymaps/drashna/config.h

@@ -30,7 +30,9 @@
 #    define RGBLIGHT_EFFECT_KNIGHT_LENGTH 2
 #    define RGBLIGHT_EFFECT_SNAKE_LENGTH 2
 
-#    define RGBLIGHT_LIMIT_VAL 225
+#    ifndef RGBLIGHT_LIMIT_VAL
+#       define RGBLIGHT_LIMIT_VAL 225
+#    endif
 #endif  // RGBLIGHT_ENABLE
 
 #ifdef AUDIO_ENABLE
@@ -49,12 +51,14 @@
 #    define QMK_SPEAKER C6
 #endif
 
-#undef PRODUCT
 #if defined(KEYBOARD_keebio_iris_rev2)
+#    undef PRODUCT
 #    define PRODUCT "Drashna Hacked Iris Rev 2"
 #elif defined(KEYBOARD_keebio_iris_rev3)
+#    undef PRODUCT
 #    define PRODUCT "Drashna Hacked Iris Rev 3"
 #elif defined(KEYBOARD_keebio_iris_rev4)
+#    undef PRODUCT
 #    define PRODUCT "Drashna Hacked Iris Rev 4"
 #endif
 

keyboards/keebio/iris/keymaps/drashna/keymap.c

@@ -101,16 +101,6 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 };
 // clang-format on
 
-void matrix_init_keymap(void) {
-#ifndef CONVERT_TO_PROTON_C
-    setPinOutput(D5);
-    writePinHigh(D5);
-
-    setPinOutput(B0);
-    writePinHigh(B0);
-#endif
-}
-
 void keyboard_post_init_keymap(void) {
 #if BACKLIGHT_ENABLE
     backlight_enable();

keyboards/keebio/iris/keymaps/drashna/rules.mk

@@ -14,7 +14,3 @@ INDICATOR_LIGHTS            = no
 RGBLIGHT_STARTUP_ANIMATION  = no
 CUSTOM_UNICODE_ENABLE       = no
 CUSTOM_SPLIT_TRANSPORT_SYNC = no
-
-ifneq ($(strip $(KEYBOARD)), keebio/iris/rev6)
-   RGBLIGHT_ENABLE    = yes
-endif