ATTR_SHOW_FN      300 drivers/input/keyboard/gpio_keys.c ATTR_SHOW_FN(keys, EV_KEY, false);
ATTR_SHOW_FN      301 drivers/input/keyboard/gpio_keys.c ATTR_SHOW_FN(switches, EV_SW, false);
ATTR_SHOW_FN      302 drivers/input/keyboard/gpio_keys.c ATTR_SHOW_FN(disabled_keys, EV_KEY, true);
ATTR_SHOW_FN      303 drivers/input/keyboard/gpio_keys.c ATTR_SHOW_FN(disabled_switches, EV_SW, true);