for_each_hwgpio(9)

✨ NAME ✨

okay so welcome to the Kernel API Manual page for for_each_hwgpio(9) — this one iterates over all GPIOs for a given chip. yes bestie, all of them. 💅

🌸 SYNOPSIS 🌸

for_each_hwgpio (_chip , _i , _label );

🎀 ARGUMENTS 🎀

• _chip — the chip to iterate over. that's the main character here 👑
• _i — the loop counter. bestie is counting every single pass 🔥
• _label — place to store the address of the label if the GPIO is requested. set it to NULL for unused GPIOs. no cap, unused means NULL 💀

🦋 SEE ALSO 🦋

go peek at the kernel file ./include/linux/gpio/driver.h — it's giving very important directory energy ✨ and also these faves:

• struct gpio_irq_chip(9)
• struct gpio_chip(9)
• for_each_hwgpio_in_range(9)
• for_each_requested_gpio_in_range(9)
• gpiochip_add_data(9)
• struct gpio_pin_range(9)

iykyk, the whole gpio friend group is here 🫶

mwah 💋 — source/version ./include/linux/gpio, date October 2026, manual for_each_hwgpio(9). slay and read responsibly 🎀