1 files changed, 29 insertions, 0 deletions

diff --git a/keyboards/keebio/foldkb/rev2_1/rev2_1.c b/keyboards/keebio/foldkb/rev2_1/rev2_1.c
new file mode 100644
index 0000000000..0fc47b1483
--- /dev/null
+++ b/keyboards/keebio/foldkb/rev2_1/rev2_1.c
@@ -0,0 +1,29 @@
+// Copyright 2025 Keebio (@keebio)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "quantum.h"
+
+void keyboard_pre_init_kb(void) {
+    // Disable the PD peripheral in pre-init because its pins are being used in the matrix:
+    PWR->CR3 |= PWR_CR3_UCPD_DBDIS;
+    // Call the corresponding _user() function (see https://docs.qmk.fm/#/custom_quantum_functions)
+    keyboard_pre_init_user();
+}
+
+bool encoder_update_kb(uint8_t index, bool clockwise) {
+    if (!encoder_update_user(index, clockwise)) { return false; }
+    if (index == 0) {
+        if (clockwise) {
+            tap_code(KC_VOLU);
+        } else {
+            tap_code(KC_VOLD);
+        }
+    } else if (index == 1) {
+        if (clockwise) {
+            tap_code(KC_PGDN);
+        } else {
+            tap_code(KC_PGUP);
+        }
+    }
+    return false;
+}