irq_domain_xlate_onetwocell(9)

📦 version 7.3.1, in nixpkgs unstable

💅 irq_domain_xlate_onetwocell(9) — like, the whole vibe

okay so bestie, welcome to the Kernel API Manual ✨ we're literally looking at irq_domain_xlate_onetwocell(9) today and honestly? she's a niche little queen but she serves 🎀

🌸 NAME 🌸

irq_domain_xlate_onetwocell — the generic xlate for one-or-two cell bindings, no cap 💫

✨ SYNOPSIS ✨

int irq_domain_xlate_onetwocell (struct irq_domain *d , struct
device_node *ctrlr , const u32 *intspec , unsigned int intsize ,
unsigned long *out_hwirq , unsigned int *out_type );

like, that's the whole signature — she takes six things and hands you back an int 🫶

🦋 ARGUMENTS 🦋

  • d — the interrupt domain that's involved in the translation. your main character domain fr 💅
  • ctrlr — the device tree node for the device whose interrupt is being translated. iykyk 🌈
  • intspec — the interrupt specifier data from the device tree. the raw tea ☕
  • intsize — the number of entries in intspec. like, how many cells we're working with 🧚
  • out_hwirq — pointer to storage for the hardware interrupt number. this is where the hwirq goes to live 🎀
  • out_type — pointer to storage for the interrupt type. the vibe check destination 💖

🔥 DESCRIPTION 🔥

so this is a Device Tree IRQ specifier translation function 📟✨ and she works with either one or two cell bindings — emphasis on either, bestie — where the cell values map directly to the hwirq number and the linux irq flags. like, direct. no middleman. no drama. periodt 💀

⭐ NOTE ⭐

🚨 ok this is the important part, listen up: don't use this function unless your interrupt controller explicitly supports both one and two cell bindings. For the majority of controllers, the _onecell or _twocell variants above should be used. like, don't be out here using the flexible one just because she's flexible 🙈💀

👑 SEE ALSO 👑

Kernel file ./kernel/irq/irqdomain.c — and literally the whole extended friend group 🫶:

and that's the page, bestie 💜 this one came from ./kernel/irq, dated October 2026, and she's filed under irq_domain_xlate_onetwocell(9) — slay, go translate some interrupts responsibly 🌸✨🎀

📦 where this page comes from