[Keyboard] Add Geistmaschine Geist (#20117)

Co-authored-by: jack <0x6a73@protonmail.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/keyboards/geistmaschine/geist/geist.c b/keyboards/geistmaschine/geist/geist.c
new file mode 100644
index 0000000000..2f6825e2ee
--- /dev/null
+++ b/keyboards/geistmaschine/geist/geist.c
@@ -0,0 +1,21 @@
+// Copyright 2022 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "quantum.h"
+
+// This will be overridden by encoder map in all default keymaps, but serves as a catch-all for user keymaps that may omit the map.
+#if defined (ENCODER_ENABLE) && !defined (ENCODER_MAP_ENABLE)
+bool encoder_update_kb(uint8_t index, bool clockwise) {
+    if (!encoder_update_user(index, clockwise)) {
+      return false; /* Don't process further events if user function exists and returns false */
+    }
+    if (index == 0) { /* First encoder */
+        if (clockwise) {
+            tap_code_delay(KC_VOLU, 10);
+        } else {
+            tap_code_delay(KC_VOLD, 10);
+        }
+    }
+    return true;
+}
+#endif
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