cdns_i2c_isr(9)

📦 version 7.3.1, in nixpkgs unstable

✨ cdns_i2c_isr(9) ✨

okay so bestie, welcome to the Kernel API Manual 🎀 this one's a little function with a big job and honestly? it's giving gatekeeper of the whole I2C vibe. let's get into it 💅

🌸 NAME 🌸

cdns_i2c_isr — the interrupt handler for the I2C device, no cap 🔥

🦋 SYNOPSIS 🦋

irqreturn_t cdns_i2c_isr (int irq , void *ptr );

💖 ARGUMENTS 💖

  • irq — the irq number for the I2C device. that's the little knock at the door that says "hey, something happened" 🫶
  • ptr — a void pointer to the cdns_i2c structure. it's your backstage pass to everything the driver knows ✨

👑 DESCRIPTION 👑

so what does it actually do? it passes control to the slave or the master, depending on what the i2c controller's current role is. literally that simple — the function checks who's on duty and hands over the aux accordingly 🎀 one handler, two possible lanes, main character energy either way 💅

⭐ RETURN ⭐

IRQ_HANDLED — always. every single time. it ate and left no crumbs 👑 like yes bestie, the interrupt was handled, we promise 🙈

💜 SEE ALSO 💜

peep the kernel file at ./drivers/i2c/busses/i2c-cadence.c for the whole friend group 🧚 and while you're there, say hi to:

ok that's the whole page bestie, go forth and handle those interrupts 💖

sign-off time 🎀 this cutie lives in ./drivers/i2c/busses, and this page is from October 2026 — mwah, ily, go read the source 🫶✨

📦 where this page comes from