imgu_mmu_init(9)

📦 version 7.3.1, in nixpkgs unstable

💖 imgu_mmu_init (9) — Kernel API Manual, bestie edition 💖

okay so this page lives in the Kernel API Manual (that's the manual name, iykyk) and it's all about one little function that gets the IPU3 MMU block up and running. it's giving "first day on the job" energy — nothing works until this happens, fr fr.

✨ NAME ✨

imgu_mmu_init — initialize the IPU3 MMU block 💅

like, this is the glow-up moment for the MMU. it goes from "just some hardware" to "actually usable," periodt.

🦋 SYNOPSIS 🦋

struct imgu_mmu_info * imgu_mmu_init (struct device *parent , void
__iomem *base );

not me calling a function that hands you back a struct imgu_mmu_info * — that's the whole vibe. you feed it a parent device and a base address, and it hands you the keys to the MMU 👑

🎀 ARGUMENTS 🎀

  • parent — the struct device parent. yes, it's literally just the parent device. every icon needs a parent, and this one is struct device shaped 🫶
  • base — the IOMEM base of the hardware registers. this is where the registers live, so don't lose it, bestie 😭

⭐ RETURN ⭐

on a good day? a pointer to the IPU3 MMU private data pointer. slay 💅

on a bad day? an ERR_PTR on error. so like… check it before you go dereferencing, ok? no cap, that's the whole warning. an error pointer will absolutely ruin your day if you treat it like a real pointer 💀

🌈 SEE ALSO 🌈

the squad. the whole crew. they all live in the kernel file ./drivers/staging/media/ipu3/ipu3-mmu.c and honestly this friend group ate:

highkey a full roster. go read them all, iykyk 🧚

ngl, the exit function is in there for a reason — every main character has an arc, and every init has a matching exit 🌸

and that's the whole page, bestie! this one comes from ./drivers/staging/media/ipu3, dated October 2026 — so like, future vibes but make it kernel 🦋✨ mwah, go forth and initialize responsibly 💜

📦 where this page comes from