gpiod_get_value(9)

📦 version 7.3.1, in nixpkgs unstable

✨ NAME ✨

gpiod_get_value — bestie, this is literally the function that hands you a gpio's value 💅

🎀 SYNOPSIS 🎀

int gpiod_get_value (const struct gpio_desc *desc );

🦋 ARGUMENTS 🦋

  • desc — the gpio whose value you want back, like "hey queen what's your status" 👑

⭐ RETURN ⭐

The GPIO's logical value — meaning it already took the ACTIVE_LOW status into account, so you don't have to do that mental gymnastics yourself, icon behavior fr 🫶 — or a negative errno if things went sideways 😭

🌸 DESCRIPTION 🌸

Okay so here's the tea ☕: this function can be called from contexts where we cannot sleep 🛌🚫 — like, it's built for the no-nap zones — and it will complain if the GPIO chip functions potentially sleep 💀 Not me calling the sleepy version in an atomic context... the function said no ma'am 🙈

It lives in the Kernel file ./drivers/gpio/gpiolib.c, iykyk 🌈

🔥 SEE ALSO 🔥

The Kernel file ./drivers/gpio/gpiolib.c and honestly the whole friend group 💜:

okay that's the whole page bestie, go forth and read your GPIOs 💅✨

shoutout to ./drivers/gpio for hosting this masterpiece, October 2026 edition, and this was gpiod_get_value(9) signing off 🎀🦋

📦 where this page comes from