gpiod_hwgpio(9)

okay bestie, welcome to the gpiod_hwgpio(9) page from the Kernel API Manual ✨🦋 this one is short and sweet, and it is literally about getting the GPIO number relative to the chip 💅

🎀 NAME 🎀

gpiod_hwgpio — return the GPIO number of the passed descriptor relative to its chip 🫶

✨ SYNOPSIS ✨

int gpiod_hwgpio (const struct gpio_desc *desc );

💅 ARGUMENTS 💅

• desc — the GPIO descriptor 🌸

🌈 RETURN 🌈

you get back the hardware offset of the GPIO represented by the descriptor ✨ periodt, that's the return value 💖

🔥 SEE ALSO 🔥

okay so the kernel file on deck is ./drivers/gpio/gpiolib.c, and here is the whole friend group, no cap 👑

• gpio_to_desc(9)
• gpio_device_get_desc(9)
• desc_to_gpio(9)
• gpiod_to_chip(9)
• gpiod_to_gpio_device(9)
• gpio_device_get_base(9)
• gpio_device_get_label(9)
• gpio_device_get_chip(9)
• gpiochip_find_base_unlocked(9)
• gpiod_is_equal(9)
• gpiod_get_direction(9)
• gpiod_is_single_ended(9)
• gpiochip_query_valid_mask(9)
• gpiochip_get_data(9)
• gpiochip_remove(9)
• gpio_device_find(9)
• gpio_device_find_by_label(9)
• gpio_device_find_by_fwnode(9)
• gpio_device_get(9)
• gpio_device_put(9)
• gpio_device_to_device(9)
• gpiochip_set_hierarchical_irqchip(9)
• gpiochip_irq_domain_activate(9)
• gpiochip_irq_domain_deactivate(9)
• gpiochip_irq_map(9)
• gpiochip_add_irqchip(9)
• gpiochip_irqchip_remove(9)
• gpiochip_irqchip_add_domain(9)
• gpiochip_generic_request(9)
• gpiochip_generic_free(9)
• gpiochip_generic_config(9)
• gpiochip_add_pingroup_range(9)
• gpiochip_add_pin_range_with_pins(9)
• gpiochip_remove_pin_ranges(9)
• gpiochip_dup_line_label(9)
• gpiochip_request_own_desc(9)
• gpiochip_free_own_desc(9)
• gpio_set_debounce_timeout(9)
• gpiod_direction_input(9)
• gpiod_direction_output_raw(9)
• gpiod_direction_output(9)
• gpiod_enable_hw_timestamp_ns(9)
• gpiod_disable_hw_timestamp_ns(9)
• gpiod_set_config(9)
• gpiod_set_debounce(9)
• gpiod_set_transitory(9)
• gpiod_is_active_low(9)
• gpiod_toggle_active_low(9)
• gpiod_get_raw_value(9)
• gpiod_get_value(9)
• gpiod_get_raw_array_value(9)
• gpiod_get_array_value(9)
• gpiod_set_raw_value(9)
• gpiod_set_value_nocheck(9)
• gpiod_set_value(9)
• gpiod_set_raw_array_value(9)
• gpiod_set_array_value(9)
• gpiod_cansleep(9)
• gpiod_set_consumer_name(9)
• gpiod_is_shared(9)
• gpiod_to_irq(9)
• gpiochip_lock_as_irq(9)
• gpiochip_unlock_as_irq(9)
• gpiod_get_raw_value_cansleep(9)
• gpiod_get_value_cansleep(9)
• gpiod_get_raw_array_value_cansleep(9)
• gpiod_get_array_value_cansleep(9)
• gpiod_set_raw_value_cansleep(9)
• gpiod_set_value_cansleep(9)
• gpiod_set_raw_array_value_cansleep(9)
• gpiod_add_lookup_tables(9)
• gpiod_set_array_value_cansleep(9)
• gpiod_add_lookup_table(9)
• gpiod_remove_lookup_table(9)
• fwnode_gpiod_get_index(9)
• gpiod_count(9)
• gpiod_get(9)
• gpiod_get_optional(9)
• gpiod_configure_flags(9)
• gpiod_get_index(9)
• gpiod_get_index_optional(9)
• gpiod_hog(9)
• gpiochip_free_hogs(9)
• gpiod_get_array(9)
• gpiod_get_array_optional(9)
• gpiod_put(9)
• gpiod_put_array(9)

mwah, bestie 💋 — source/version: ./drivers/gpio · date: October 2026 · page: gpiod_hwgpio(9) 🎀