add via layout for aek2 usb pcb (qmk#11125)

keyboards/kb_elmo/aek2_usb/config.h

@@ -47,3 +47,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define LOCKING_SUPPORT_ENABLE
 /* Locking resynchronize hack */
 #define LOCKING_RESYNC_ENABLE
+
+/* reduce VIA layer count because of EEPROM size */
+#define DYNAMIC_KEYMAP_LAYER_COUNT 2

keyboards/kb_elmo/aek2_usb/keymaps/via/keymap.c

@@ -0,0 +1,36 @@
+/* Copyright 2020 kb-elmo<[email protected]>
+ *
+ * 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 QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    /* Base */
+    [0] = LAYOUT(
+        KC_ESC,           KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,     KC_PSCR, KC_SLCK, KC_PAUS,                               KC_MPLY,
+        KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS, KC_EQL,  KC_BSPC,    KC_INS,  KC_HOME, KC_PGUP,    KC_NLCK, KC_PEQL, KC_PSLS, KC_PAST,
+        KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC, KC_RBRC, KC_BSLS,    KC_DEL,  KC_END,  KC_PGDN,    KC_P7,   KC_P8,   KC_P9,   KC_PMNS,
+        KC_LCAP, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT,          KC_ENT,                                   KC_P4,   KC_P5,   KC_P6,   KC_PPLS,
+        KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH,                   KC_RSFT,             KC_UP,               KC_P1,   KC_P2,   KC_P3,
+        KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC,                                      KC_RALT, MO(1),   KC_RCTL,    KC_LEFT, KC_DOWN, KC_RGHT,    KC_P0,            KC_PDOT, KC_PENT
+    ),
+    [1] = LAYOUT(
+        KC_TRNS,          KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,    KC_TRNS, KC_TRNS, KC_TRNS,                               KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,    KC_TRNS, KC_TRNS, KC_TRNS,    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,    KC_TRNS, KC_TRNS, KC_TRNS,    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_TRNS,                                  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_VOLD, KC_VOLU, KC_MUTE, KC_MPRV, KC_MNXT, KC_MPLY,                   KC_TRNS,             KC_TRNS,             KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS,                            KC_TRNS,                                     KC_TRNS, KC_TRNS, KC_TRNS,    KC_TRNS, KC_TRNS, KC_TRNS,    KC_TRNS,          KC_TRNS, KC_TRNS
+    )
+};

keyboards/kb_elmo/aek2_usb/keymaps/via/rules.mk

@@ -0,0 +1 @@
+VIA_ENABLE = yes