zynq_gpio_dir_in(9)

📦 version 7.3.1, in nixpkgs unstable

💅 zynq_gpio_dir_in — a kernel API manual, bestie edition ✨

okay so bestie, we're deep in the zynq_gpio filesystem of the Kernel API Manual and this one is lowkey a glow-up moment for one single pin 💖

🌸 NAME 🌸

zynq_gpio_dir_in — Set the direction of the specified GPIO pin as input 🎀

like, you're telling a pin "hey girl, you're listening now, not talking" and honestly? iconic.

✨ SYNOPSIS ✨

int zynq_gpio_dir_in (struct gpio_chip *chip , unsigned int pin );

that's it. that's the whole vibe check. two arguments, one int coming back at you 🫶

🦋 ARGUMENTS 🦋

  • chip — the gpio_chip instance to be worked on, aka the main character we're operating on 💅
  • pin — the gpio pin number within the device, aka which specific little guy we're flipping to input mode 🌸

🔥 DESCRIPTION 🔥

so this function uses the read-modify-write sequence to set the direction of the gpio pin as input. no cap, that's the whole method: you read what's there, you modify the bits you care about, you write it back. the way that it just works 😭✨

👑 RETURN 👑

0 — always. every single time. 0. she's consistent, she's reliable, she never misses 💀💖

🌈 SEE ALSO 🌈

Kernel file ./drivers/gpio/gpio-zynq.c and the whole friend group:

iykyk, go read them all, they're all slay in their own way 🧚💜

ok that's the whole page bestie, go set some pins to input and periodt 💅

and that's a wrap, bestie! 🍓 this little page lives in ./drivers/gpio and the version/date stamp says October 2026 — so mark your calendar, screenshot it, send it to the group chat, and remember: zynq_gpio_dir_in(9) ate and left no crumbs 🔥👑⭐

📦 where this page comes from