MATRIX_MAX_COLS 32 drivers/input/keyboard/matrix_keypad.c uint32_t last_key_state[MATRIX_MAX_COLS]; MATRIX_MAX_COLS 121 drivers/input/keyboard/matrix_keypad.c uint32_t new_state[MATRIX_MAX_COLS]; MATRIX_MAX_COLS 13 include/linux/input/matrix_keypad.h (((col) & (MATRIX_MAX_COLS - 1)) << 16) |\