gmmk/pro/mike1808 keymap (#13398)

* Add gmmk/pro/mike1808 keymap

* Add licenses

* Update readme

* Add underglow support for rgb matrix layers

* Change FN to TT

* Fix rgb layer disabling during rgb settings change

* also clean up some code

1 files changed, 64 insertions, 0 deletions

diff --git a/keyboards/gmmk/pro/keymaps/mike1808/utils.c b/keyboards/gmmk/pro/keymaps/mike1808/utils.c
new file mode 100644
index 0000000000..35ae20b126
--- /dev/null
+++ b/keyboards/gmmk/pro/keymaps/mike1808/utils.c
@@ -0,0 +1,64 @@
+/* Copyright 2021 Mikael Manukyan <arm.localhost@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "utils.h"
+
+void store_rgb_state_to_eeprom() {
+    uint8_t mode  = rgb_matrix_get_mode();
+    uint8_t speed = rgb_matrix_get_speed();
+    HSV     color = rgb_matrix_get_hsv();
+
+    rgb_matrix_mode(mode);
+    rgb_matrix_set_speed(speed);
+    rgb_matrix_sethsv(color.h, color.s, color.v);
+}
+
+void press(KeyPressState *self) {
+    self->_count++;
+
+    dprintf("KPS: press: %d\n", self->_count);
+
+    // pressed the first time
+    if (self->_count == 1) {
+        self->hander(true);
+    }
+}
+
+void release(KeyPressState *self) {
+    self->_count--;
+
+    dprintf("KPS: release: %d\n", self->_count);
+
+    // all keys are relased
+    if (self->_count == 0) {
+        self->hander(false);
+    }
+}
+
+void reset(KeyPressState *self) {
+    self->_count = 0;
+}
+
+KeyPressState *NewKeyPressState(key_press_handler handler) {
+    KeyPressState *kps = (KeyPressState *)(malloc(sizeof(KeyPressState)));
+
+    kps->_count = 0;
+    kps->press = press;
+    kps->release = release;
+    kps->reset = reset;
+    kps->hander = handler;
+
+    return kps;
+}