get_int_hint
if (get_int_hint(codec, "gpio_mask", &spec->gpio_mask)) {
if (get_int_hint(codec, "gpio_dir", &spec->gpio_dir))
if (get_int_hint(codec, "gpio_data", &spec->gpio_data))
if (get_int_hint(codec, "eapd_mask", &spec->eapd_mask))
if (get_int_hint(codec, "gpio_mute", &spec->gpio_mute))
if (get_int_hint(codec, "gpio_led", &spec->gpio_led)) {
get_int_hint(codec, "gpio_led_polarity",