diff --git a/common/action.c b/common/action.c
index 710300eb..6528cd46 100644
--- a/common/action.c
+++ b/common/action.c
@@ -26,6 +26,12 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "action.h"
 
 
+/* default layer indicates base layer */
+uint8_t default_layer = 0;
+/* current layer indicates active layer at this time */
+uint8_t current_layer = 0;
+
+
 static void process_action(keyrecord_t *record);
 static bool process_tapping(keyrecord_t *record);
 static void waiting_buffer_scan_tap(void);
@@ -203,12 +209,12 @@ void action_exec(keyevent_t event)
 
 static action_t get_action(key_t key)
 {
-    action_t action = keymap_get_action(current_layer, key.pos.row, key.pos.col);
+    action_t action = action_for_key(current_layer, key);
 
     /* Transparently use default layer */
     if (action.code == ACTION_TRANSPARENT) {
         // TODO: layer stacking
-        action = keymap_get_action(default_layer, key.pos.row, key.pos.col);
+        action = action_for_key(default_layer, key);
         debug("TRNASPARENT: "); debug_hex16(action.code); debug("\n");
     }
     return action;
@@ -509,12 +515,12 @@ static void process_action(keyrecord_t *record)
 
         /* Extentions */
         case ACT_MACRO:
+            // TODO
             break;
         case ACT_COMMAND:
             break;
         case ACT_FUNCTION:
-            // TODO
-            keymap_call_function(record, action.func.id, action.func.opt);
+            action_function(record, action.func.id, action.func.opt);
             break;
         default:
             break;
@@ -853,7 +859,7 @@ bool is_tap_key(key_t key)
  */
 static void debug_event(keyevent_t event)
 {
-    debug_hex16(event.key.raw);
+    debug_hex16((event.key.row<<8) | event.key.col);
     if (event.pressed) debug("d("); else debug("u(");
     debug_dec(event.time); debug(")");
 }
diff --git a/common/action.h b/common/action.h
index bb44049a..b9a6cb5b 100644
--- a/common/action.h
+++ b/common/action.h
@@ -21,10 +21,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "keycode.h"
 
 
-/* Execute action per keyevent */
-void action_exec(keyevent_t event);
-
-
 /* Struct to record event and tap count  */
 typedef struct {
     keyevent_t  event;
@@ -33,7 +29,7 @@ typedef struct {
 
 /* Action struct.
  *
- * In avr-gcc bit field seems to be assigned from LSB(bit0) to MSB(bit15). 
+ * In avr-gcc bit field seems to be assigned from LSB(bit0) to MSB(bit15).
  * AVR looks like a little endian in avr-gcc.
  *
  * NOTE: not portable across compiler/endianness?
@@ -79,6 +75,21 @@ typedef union {
 } action_t;
 
 
+
+/* layer used currently */
+extern uint8_t current_layer;
+/* layer to return or start with */
+extern uint8_t default_layer;
+
+/* Execute action per keyevent */
+void action_exec(keyevent_t event);
+
+/* action for key */
+action_t action_for_key(uint8_t layer, key_t key);
+
+/* user defined special function */
+void action_function(keyrecord_t *record, uint8_t id, uint8_t opt);
+
 /*
  * Utilities for actions.
  */
@@ -96,98 +107,97 @@ bool waiting_buffer_has_anykey_pressed(void);
 
 
 
-
 /*
  * Action codes
  * ============
  * 16bit code: action_kind(4bit) + action_parameter(12bit)
  *
-Keyboard Keys
--------------
-ACT_LMODS(0000):
-0000|0000|000000|00    No action
-0000|0000|000000|01    Transparent
-0000|0000| keycode     Key
-0000|mods|000000|00    Left mods
-0000|mods| keycode     Key & Left mods
-
-ACT_RMODS(0001):
-0001|0000|000000|00    No action(not used)
-0001|0000|000000|01    Transparent(not used)
-0001|0000| keycode     Key(no used)
-0001|mods|000000|00    Right mods
-0001|mods| keycode     Key & Right mods
-
-ACT_LMODS_TAP(0010):
-0010|mods|000000|00    Left mods OneShot
-0010|mods|000000|01    (reserved)
-0010|mods|000000|10    (reserved)
-0010|mods|000000|11    (reserved)
-0010|mods| keycode     Left mods + tap Key
-
-ACT_RMODS_TAP(0011):
-0011|mods|000000|00    Right mods OneShot
-0011|mods|000000|01    (reserved)
-0011|mods|000000|10    (reserved)
-0011|mods|000000|11    (reserved)
-0011|mods| keycode     Right mods + tap Key
- 
-
-Other HID Usage
----------------
-This action handles other usages than keyboard.
-ACT_USAGE(0100):
-0100|00| usage(10)     System control(0x80) - General Desktop page(0x01)
-0100|01| usage(10)     Consumer control(0x01) - Consumer page(0x0C)
-0100|10| usage(10)     (reserved)
-0100|11| usage(10)     (reserved)
-
-
-Mouse Keys
-----------
-TODO: can be combined with 'Other HID Usage'? to save action kind id.
-ACT_MOUSEKEY(0110):
-0101|XXXX| keycode     Mouse key
-
-
-Layer Actions
--------------
-ACT_LAYER(1000):            Set layer
-ACT_LAYER_BIT(1001):        Bit-op layer
-
-1000|LLLL|0000 0000   set L to layer on press and set default on release(momentary)
-1000|LLLL|0000 0001   set L to layer on press
-1000|LLLL|0000 0010   set L to layer on release
-1000|----|0000 0011   set default to layer on both(return to default layer)
-1000|LLLL| keycode    set L to layer while hold and send key on tap
-1000|LLLL|1111 0000   set L to layer while hold and toggle on several taps
-1000|LLLL|1111 1111   set L to default and layer(on press)
-
-1001|BBBB|0000 0000   (not used)
-1001|BBBB|0000 0001   bit-xor layer with B on press
-1001|BBBB|0000 0010   bit-xor layer with B on release
-1001|BBBB|0000 0011   bit-xor layer with B on both(momentary)
-1001|BBBB| keycode    bit-xor layer with B while hold and send key on tap
-1001|BBBB|1111 0000   bit-xor layer with B while hold and toggle on several taps
-1001|BBBB|1111 1111   bit-xor default with B and set layer(on press)
-
-
-
-Extensions(11XX)
-----------------
-NOTE: NOT FIXED
-
-ACT_MACRO(1100):
-1100|opt | id(8)      Macro play?
-1100|1111| id(8)      Macro record?
-
-ACT_COMMAND(1110):
-1110|opt | id(8)      Built-in Command exec
-
-ACT_FUNCTION(1111):
-1111| address(12)     Function?
-1111|opt | id(8)      Function?
-
+ * Keyboard Keys
+ * -------------
+ * ACT_LMODS(0000):
+ * 0000|0000|000000|00    No action
+ * 0000|0000|000000|01    Transparent
+ * 0000|0000| keycode     Key
+ * 0000|mods|000000|00    Left mods
+ * 0000|mods| keycode     Key & Left mods
+ *
+ * ACT_RMODS(0001):
+ * 0001|0000|000000|00    No action(not used)
+ * 0001|0000|000000|01    Transparent(not used)
+ * 0001|0000| keycode     Key(no used)
+ * 0001|mods|000000|00    Right mods
+ * 0001|mods| keycode     Key & Right mods
+ *
+ * ACT_LMODS_TAP(0010):
+ * 0010|mods|000000|00    Left mods OneShot
+ * 0010|mods|000000|01    (reserved)
+ * 0010|mods|000000|10    (reserved)
+ * 0010|mods|000000|11    (reserved)
+ * 0010|mods| keycode     Left mods + tap Key
+ *
+ * ACT_RMODS_TAP(0011):
+ * 0011|mods|000000|00    Right mods OneShot
+ * 0011|mods|000000|01    (reserved)
+ * 0011|mods|000000|10    (reserved)
+ * 0011|mods|000000|11    (reserved)
+ * 0011|mods| keycode     Right mods + tap Key
+ *
+ *
+ * Other HID Usage
+ * ---------------
+ * This action handles other usages than keyboard.
+ * ACT_USAGE(0100):
+ * 0100|00| usage(10)     System control(0x80) - General Desktop page(0x01)
+ * 0100|01| usage(10)     Consumer control(0x01) - Consumer page(0x0C)
+ * 0100|10| usage(10)     (reserved)
+ * 0100|11| usage(10)     (reserved)
+ *
+ *
+ * Mouse Keys
+ * ----------
+ * TODO: can be combined with 'Other HID Usage'? to save action kind id.
+ * ACT_MOUSEKEY(0110):
+ * 0101|XXXX| keycode     Mouse key
+ *
+ *
+ * Layer Actions
+ * -------------
+ * ACT_LAYER(1000):            Set layer
+ * ACT_LAYER_BIT(1001):        Bit-op layer
+ *
+ * 1000|LLLL|0000 0000   set L to layer on press and set default on release(momentary)
+ * 1000|LLLL|0000 0001   set L to layer on press
+ * 1000|LLLL|0000 0010   set L to layer on release
+ * 1000|----|0000 0011   set default to layer on both(return to default layer)
+ * 1000|LLLL| keycode    set L to layer while hold and send key on tap
+ * 1000|LLLL|1111 0000   set L to layer while hold and toggle on several taps
+ * 1000|LLLL|1111 1111   set L to default and layer(on press)
+ *
+ * 1001|BBBB|0000 0000   (not used)
+ * 1001|BBBB|0000 0001   bit-xor layer with B on press
+ * 1001|BBBB|0000 0010   bit-xor layer with B on release
+ * 1001|BBBB|0000 0011   bit-xor layer with B on both(momentary)
+ * 1001|BBBB| keycode    bit-xor layer with B while hold and send key on tap
+ * 1001|BBBB|1111 0000   bit-xor layer with B while hold and toggle on several taps
+ * 1001|BBBB|1111 1111   bit-xor default with B and set layer(on press)
+ *
+ *
+ *
+ * Extensions(11XX)
+ * ----------------
+ * NOTE: NOT FIXED
+ *
+ * ACT_MACRO(1100):
+ * 1100|opt | id(8)      Macro play?
+ * 1100|1111| id(8)      Macro record?
+ *
+ * ACT_COMMAND(1110):
+ * 1110|opt | id(8)      Built-in Command exec
+ *
+ * ACT_FUNCTION(1111):
+ * 1111| address(12)     Function?
+ * 1111|opt | id(8)      Function?
+ *
  */
 enum action_kind_id {
     ACT_LMODS           = 0b0000,
@@ -241,7 +251,7 @@ enum mods_codes {
 #define ACTION_RMOD_ONESHOT(mod)        ACTION(ACT_RMODS_TAP, MODS4(MOD_BIT(mod))<<8 | MODS_ONESHOT)
 
 
-/* 
+/*
  * Switch layer
  */
 enum layer_codes {
@@ -258,7 +268,7 @@ enum layer_vals_default {
     DEFAULT_ON_BOTH = 3,
 };
 
-/* 
+/*
  * return to default layer
  */
 #define ACTION_LAYER_DEFAULT                    ACTION_LAYER_DEFAULT_R
@@ -288,7 +298,7 @@ enum layer_vals_default {
 /* set default layer on both press and release */
 #define ACTION_LAYER_SET_DEFAULT(layer)         ACTION(ACT_LAYER, (layer)<<8 | LAYER_CHANGE_DEFAULT)
 
-/* 
+/*
  * Bit-op layer
  */
 /* bit-xor on both press and release */
diff --git a/common/keyboard.c b/common/keyboard.c
index 2c88b3e4..e4bc3dc8 100644
--- a/common/keyboard.c
+++ b/common/keyboard.c
@@ -85,7 +85,7 @@ void keyboard_task(void)
             for (uint8_t c = 0; c < MATRIX_COLS; c++) {
                 if (matrix_change & ((matrix_row_t)1<<c)) {
                     action_exec((keyevent_t){
-                        .key.pos  = (keypos_t){ .row = r, .col = c },
+                        .key = (key_t){ .row = r, .col = c },
                         .pressed = (matrix_row & (1<<c)),
                         .time = (timer_read() | 1) /* time should not be 0 */
                     });
diff --git a/common/keyboard.h b/common/keyboard.h
index e1cab311..78cb2403 100644
--- a/common/keyboard.h
+++ b/common/keyboard.h
@@ -30,12 +30,6 @@ extern "C" {
 typedef struct {
     uint8_t col;
     uint8_t row;
-} keypos_t;
-
-// TODO: need raw? keypos_t -> key_t?
-typedef union {
-    uint16_t raw;
-    keypos_t pos;
 } key_t;
 
 /* key event */
@@ -46,20 +40,20 @@ typedef struct {
 } keyevent_t;
 
 /* equivalent test of key_t */
-#define KEYEQ(keya, keyb)       ((keya).raw == (keyb).raw)
+#define KEYEQ(keya, keyb)       ((keya).row == (keyb).row && (keya).col == (keyb).col)
 
 /* (time == 0) means no event and assumes matrix has no 255 line. */
-#define IS_NOEVENT(event)       ((event).time == 0 || ((event).key.pos.row == 255 && (event).key.pos.col == 255))
+#define IS_NOEVENT(event)       ((event).time == 0 || ((event).key.row == 255 && (event).key.col == 255))
 
 #define NOEVENT                 (keyevent_t){           \
-    .key.pos = (keypos_t){ .row = 255, .col = 255 },    \
+    .key = (key_t){ .row = 255, .col = 255 },           \
     .pressed = false,                                   \
     .time = 0                                           \
 }
 
 /* tick event */
 #define TICK                    (keyevent_t){           \
-    .key.pos = (keypos_t){ .row = 255, .col = 255 },    \
+    .key = (key_t){ .row = 255, .col = 255 },           \
     .pressed = false,                                   \
     .time = (timer_read() | 1)                          \
 }
diff --git a/common/keymap.c b/common/keymap.c
index 2782ea9d..07861581 100644
--- a/common/keymap.c
+++ b/common/keymap.c
@@ -20,11 +20,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "action.h"
 
 
-/* layer */
-uint8_t default_layer = 0;
-uint8_t current_layer = 0;
-
-
 action_t keymap_keycode_to_action(uint8_t keycode)
 {
     action_t action;
@@ -60,10 +55,10 @@ action_t keymap_keycode_to_action(uint8_t keycode)
 #ifndef NO_LEGACY_KEYMAP_SUPPORT
 /* legacy support with weak reference */
 __attribute__ ((weak))
-action_t keymap_get_action(uint8_t layer, uint8_t row, uint8_t col)
+action_t action_for_key(uint8_t layer, key_t key)
 {
     /* convert from legacy keycode to action */
-    uint8_t keycode = keymap_get_keycode(layer, row, col);
+    uint8_t keycode = keymap_get_keycode(layer, key.row, key.col);
     action_t action;
     switch (keycode) {
         case KC_FN0 ... KC_FN31:
@@ -84,6 +79,6 @@ action_t keymap_get_action(uint8_t layer, uint8_t row, uint8_t col)
 #endif
 
 __attribute__ ((weak))
-void keymap_call_function(keyrecord_t *event, uint8_t id, uint8_t opt)
+void action_function(keyrecord_t *event, uint8_t id, uint8_t opt)
 {
 }
diff --git a/common/keymap.h b/common/keymap.h
index ee36eab8..63bf1448 100644
--- a/common/keymap.h
+++ b/common/keymap.h
@@ -23,13 +23,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "action.h"
 
 
-// TODO: move to action.h?
-/* layer used currently */
-extern uint8_t current_layer;
-/* layer to return or start with */
-extern uint8_t default_layer;
-
-
 /* translates key_t to keycode */
 uint8_t keymap_key_to_keycode(uint8_t layer, key_t key);
 /* translates keycode to action */
@@ -38,22 +31,12 @@ action_t keymap_keycode_to_action(uint8_t keycode);
 action_t keymap_fn_to_action(uint8_t keycode);
 
 
-/* action for key */
-// TODO: should use struct key_t? move to action.h?
-action_t keymap_get_action(uint8_t layer, uint8_t row, uint8_t col);
-
-/* user defined special function */
-void keymap_call_function(keyrecord_t *record, uint8_t id, uint8_t opt);
-
-
 
 #ifndef NO_LEGACY_KEYMAP_SUPPORT
 /* keycode of key */
 uint8_t keymap_get_keycode(uint8_t layer, uint8_t row, uint8_t col);
-
 /* layer to move during press Fn key */
 uint8_t keymap_fn_layer(uint8_t fn_bits);
-
 /* keycode to send when release Fn key without using */
 uint8_t keymap_fn_keycode(uint8_t fn_bits);
 #endif
diff --git a/keyboard/gh60/keymap.c b/keyboard/gh60/keymap.c
index d2da5052..a17c11fc 100644
--- a/keyboard/gh60/keymap.c
+++ b/keyboard/gh60/keymap.c
@@ -165,7 +165,7 @@ static const uint16_t PROGMEM fn_actions[] = {
 /* translates key to keycode */
 uint8_t keymap_key_to_keycode(uint8_t layer, key_t key)
 {
-    return pgm_read_byte(&keymaps[(layer)][(key.pos.row)][(key.pos.col)]);
+    return pgm_read_byte(&keymaps[(layer)][(key.row)][(key.col)]);
 }
 
 /* translates Fn index to action */
@@ -181,11 +181,8 @@ action_t keymap_fn_to_action(uint8_t keycode)
 }
 
 /* convert key to action */
-action_t keymap_get_action(uint8_t layer, uint8_t row, uint8_t col)
+action_t action_for_key(uint8_t layer, key_t key)
 {
-    key_t key;
-    key.pos.row = row;
-    key.pos.col = col;
     uint8_t keycode = keymap_key_to_keycode(layer, key);
     switch (keycode) {
         case KC_FN0 ... KC_FN31:
diff --git a/keyboard/hhkb/keymap.c b/keyboard/hhkb/keymap.c
index a5b6d3ac..ef21282f 100644
--- a/keyboard/hhkb/keymap.c
+++ b/keyboard/hhkb/keymap.c
@@ -314,7 +314,7 @@ void keymap_call_function(keyrecord_t *record, uint8_t id, uint8_t opt)
 /* translates key to keycode */
 uint8_t keymap_key_to_keycode(uint8_t layer, key_t key)
 {
-    return pgm_read_byte(&keymaps[(layer)][(key.pos.row)][(key.pos.col)]);
+    return pgm_read_byte(&keymaps[(layer)][(key.row)][(key.col)]);
 }
 
 /* translates Fn index to action */
@@ -330,11 +330,8 @@ action_t keymap_fn_to_action(uint8_t keycode)
 }
 
 /* convert key to action */
-action_t keymap_get_action(uint8_t layer, uint8_t row, uint8_t col)
+action_t action_for_key(uint8_t layer, key_t key)
 {
-    key_t key;
-    key.pos.row = row;
-    key.pos.col = col;
     uint8_t keycode = keymap_key_to_keycode(layer, key);
     switch (keycode) {
         case KC_FN0 ... KC_FN31: