4 files changed, 5 insertions, 136 deletions
diff --git a/keyboards/ymdk_np21/config.h b/keyboards/ymdk_np21/config.h
index 4a846f5e94..60c5277761 100644
--- a/keyboards/ymdk_np21/config.h
+++ b/keyboards/ymdk_np21/config.h
@@ -29,8 +29,10 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define PRODUCT         np21
 
 /* matrix size */
-#define MATRIX_ROWS 8
-#define MATRIX_COLS 15
+#define MATRIX_ROWS 4
+#define MATRIX_COLS 6
+#define MATRIX_ROW_PINS { B0, B1, B2, B3 }
+#define MATRIX_COL_PINS { A0, A1, A2, A3, A4, A5 }
 
 /* COL2ROW or ROW2COL */
 #define DIODE_DIRECTION COL2ROW
diff --git a/keyboards/ymdk_np21/matrix.c b/keyboards/ymdk_np21/matrix.c
deleted file mode 100644
index b2bfb2f0bb..0000000000
--- a/keyboards/ymdk_np21/matrix.c
+++ /dev/null
@@ -1,129 +0,0 @@
-/*
-Copyright 2017 Luiz Ribeiro <luizribeiro@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 <avr/io.h>
-#include <util/delay.h>
-
-#include "matrix.h"
-
-#ifndef DEBOUNCE
-#   define DEBOUNCE	5
-#endif
-
-static uint8_t debouncing = DEBOUNCE;
-
-static matrix_row_t matrix[MATRIX_ROWS];
-static matrix_row_t matrix_debouncing[MATRIX_ROWS];
-
-void matrix_set_row_status(uint8_t row);
-uint8_t bit_reverse(uint8_t x);
-
-void matrix_init(void) {
-    // all outputs for rows high
-    DDRB = 0xFF;
-    PORTB = 0xFF;
-    // all inputs for columns
-    DDRA = 0x00;
-    DDRC &= ~(0x111111<<2);
-    DDRD &= ~(1<<PIND7);
-    // all columns are pulled-up
-    PORTA = 0xFF;
-    PORTC |= (0b111111<<2);
-    PORTD |= (1<<PIND7);
-
-    // initialize matrix state: all keys off
-    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
-        matrix[row] = 0x00;
-        matrix_debouncing[row] = 0x00;
-    }
-
-    matrix_init_quantum();  // missing from original port by Luiz
-}
-
-uint8_t matrix_scan(void) {
-    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
-        matrix_set_row_status(row);
-        _delay_us(5);
-
-        matrix_row_t cols = (
-            // cols 0..7, PORTA 0 -> 7
-            (~PINA) & 0xFF
-        ) | (
-            // cols 8..13, PORTC 7 -> 0
-            bit_reverse((~PINC) & 0xFF) << 8
-        ) | (
-            // col 14, PORTD 7
-            ((~PIND) & (1 << PIND7)) << 7
-        );
-
-        if (matrix_debouncing[row] != cols) {
-            matrix_debouncing[row] = cols;
-            debouncing = DEBOUNCE;
-        }
-    }
-
-    if (debouncing) {
-        if (--debouncing) {
-            _delay_ms(1);
-        } else {
-            for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
-                matrix[i] = matrix_debouncing[i];
-            }
-        }
-    }
-
-    matrix_scan_quantum();  // also missing in original PS2AVRGB implementation
-
-    return 1;
-}
-
-__attribute__ ((weak))
-void matrix_scan_user(void) {};
-
-__attribute__ ((weak))
-void matrix_scan_kb(void) {
-  // Looping keyboard code goes here
-  // This runs every cycle (a lot)
-  matrix_scan_user();
-};
-
-__attribute__ ((weak))
-void matrix_init_user(void) {};
-
-__attribute__ ((weak))
-void matrix_init_kb(void) {
-  matrix_init_user();
-}
-// declarations
-void matrix_set_row_status(uint8_t row) {
-    DDRB = (1 << row);
-    PORTB = ~(1 << row);
-}
-
-uint8_t bit_reverse(uint8_t x) {
-    x = ((x >> 1) & 0x55) | ((x << 1) & 0xaa);
-    x = ((x >> 2) & 0x33) | ((x << 2) & 0xcc);
-    x = ((x >> 4) & 0x0f) | ((x << 4) & 0xf0);
-    return x;
-}
-
-inline matrix_row_t matrix_get_row(uint8_t row) {
-    return matrix[row];
-}
-
-void matrix_print(void) {
-}
diff --git a/keyboards/ymdk_np21/rules.mk b/keyboards/ymdk_np21/rules.mk
index 2bab3043e8..772bee9285 100644
--- a/keyboards/ymdk_np21/rules.mk
+++ b/keyboards/ymdk_np21/rules.mk
@@ -31,6 +31,4 @@ SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
 
 OPT_DEFS = -DDEBUG_LEVEL=0
 
-# custom matrix setup
-CUSTOM_MATRIX = yes
-SRC = matrix.c backlight.c
+SRC = backlight.c
diff --git a/keyboards/ymdk_np21/ymdk_np21.h b/keyboards/ymdk_np21/ymdk_np21.h
index 728406d6e5..2cd2d13c21 100644
--- a/keyboards/ymdk_np21/ymdk_np21.h
+++ b/keyboards/ymdk_np21/ymdk_np21.h
@@ -23,8 +23,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "keycode.h"
 #include "action.h"
 
-void matrix_init_user(void);  // TODO port this to other PS2AVRGB boards
-
 #define LAYOUT( \
     K01, K02, K03, K04, K05, K06, \
     K11, K12, K13, K14, K15, K16, \