56 static void __activate_col(struct matrix_keypad *keypad, int col, bool on)  in __activate_col()  argument
59 		gpiod_direction_output(keypad->col_gpios[col], 1);  in __activate_col()
61 		gpiod_set_value_cansleep(keypad->col_gpios[col], 0);  in __activate_col()
63 			gpiod_direction_input(keypad->col_gpios[col]);  in __activate_col()
67 static void activate_col(struct matrix_keypad *keypad, int col, bool on)  in activate_col()  argument
69 	__activate_col(keypad, col, on);  in activate_col()
77 	int col;  in activate_all_cols()  local
79 	for (col = 0; col < keypad->num_col_gpios; col++)  in activate_all_cols()
80 		__activate_col(keypad, col, on);  in activate_all_cols()
114 	int row, col, code;  in matrix_keypad_scan()  local
125 	for (col = 0; col < keypad->num_col_gpios; col++) {  in matrix_keypad_scan()
127 		activate_col(keypad, col, true);  in matrix_keypad_scan()
130 			new_state[col] |=  in matrix_keypad_scan()
133 		activate_col(keypad, col, false);  in matrix_keypad_scan()
136 	for (col = 0; col < keypad->num_col_gpios; col++) {  in matrix_keypad_scan()
139 		bits_changed = keypad->last_key_state[col] ^ new_state[col];  in matrix_keypad_scan()
147 			code = MATRIX_SCAN_CODE(row, col, keypad->row_shift);  in matrix_keypad_scan()
151 					 new_state[col] & (1 << row));  in matrix_keypad_scan()