devm_regmap..._chip_fwnode(9)

📦 version 7.3.1, in nixpkgs unstable

✨ devm_regmap_add_irq_chip_fwnode ✨

okay so bestie, welcome to the Kernel API Manual 💖 this one's a resource-managed little queen — it's literally regmap_add_irq_chip_fwnode() but with devm vibes, meaning it cleans up after itself so you don't have to 🫶 and the file lives over in ./drivers/base/regmap, section 9 of the kernel docs, if you're keeping score 💅

🌸 SYNOPSIS 🌸

int devm_regmap_add_irq_chip_fwnode (struct device *dev , struct
       fwnode_handle *fwnode , struct regmap *map , int irq , int irq_flags ,
       int irq_base , const struct regmap_irq_chip *chip , struct
       regmap_irq_chip_data **data );

like, yeah, that's a whole lot of arguments, but we're gonna break every single one of them down below, no cap ✨

🎀 ARGUMENTS 🎀

  • dev — the device pointer that the irq_chip belongs to. it's giving "whose chip is this anyway" energy 👑
  • fwnode — the firmware node where the IRQ domain should be added to. that's the spot, bestie 🦋
  • map — the regmap for the device. your register map, your bestie 💜
  • irq — the IRQ the device uses to signal interrupts 🔥
  • irq_flags — the IRQF_ flags to use for the primary interrupt. yes, those flags, keep them safe 💅
  • irq_base — allocate at a specific IRQ number if irq_base > 0. very "I want it right there" of you 🎯
  • chip — configuration for the interrupt controller. the whole blueprint, honestly 🌈
  • data — runtime data structure for the controller, allocated on success. it only shows up if things go well, main character behavior 😭

⭐ DESCRIPTION ⭐

Returns 0 on success or an errno on failure. simple as that, no mystery 🍓

The regmap_irq_chip_data will be automatically released when the device is unbound — that's the whole devm slay, bestie, it cleans up so you literally cannot leak it 🙈

💀 SEE ALSO 💀

Kernel file ./drivers/base/regmap/regmap-irq.c

ngl, this whole page comes from ./drivers/base/regmap, dated October 2026, in the Kernel API Manual — so go read the neighbors too, iykyk 💖

and that's the vibe check, bestie — go forth and add your irq chips responsibly ✨🎀💅

📦 where this page comes from