1 files changed, 4 insertions, 23 deletions
diff --git a/hhkb/matrix.c b/hhkb/matrix.c
index d8dc9a7f8c..d95ee11350 100644
--- a/hhkb/matrix.c
+++ b/hhkb/matrix.c
@@ -1,10 +1,13 @@
 /*
  * scan matrix
  */
+#include <stdint.h>
+#include <stdbool.h>
 #include <avr/io.h>
 #include <util/delay.h>
 #include "matrix.h"
 #include "print.h"
+#include "util.h"
 
 // matrix is active low. (key on: 0/key off: 1)
 //
@@ -30,10 +33,6 @@ static uint8_t _matrix0[MATRIX_ROWS];
 static uint8_t _matrix1[MATRIX_ROWS];
 
 
-static bool matrix_has_ghost_in_row(int row);
-static int bit_pop(uint8_t bits);
-
-
 inline
 int matrix_rows(void)
 {
@@ -122,9 +121,6 @@ void matrix_print(void)
     for (int row = 0; row < matrix_rows(); row++) {
         phex(row); print(": ");
         pbin_reverse(matrix_get_row(row));
-        if (matrix_has_ghost_in_row(row)) {
-            print(" <ghost");
-        }
         print("\n");
     }
 }
@@ -133,22 +129,7 @@ int matrix_key_count(void)
 {
     int count = 0;
     for (int i = 0; i < MATRIX_ROWS; i++) {
-        count += bit_pop(matrix[i]);
+        count += bitpop(matrix[i]);
     }
     return count;
 }
-
-inline
-static bool matrix_has_ghost_in_row(int row)
-{
-    return false;
-}
-
-inline
-static int bit_pop(uint8_t bits)
-{
-    int c;
-    for (c = 0; bits; c++)
-        bits &= bits -1;
-    return c;
-}