parport_ip32_frob_control(9)

📦 version 7.3.1, in nixpkgs unstable

💅 parport_ip32_frob_control(9) — Kernel API Manual 🎀

okay bestie, so this is a page straight out of the Kernel API Manual (yes, that manual, the one your professor keeps flexing about) and it's literally about poking bits in a hardware register. main character energy for a function nobody outside the parallel-port squad has heard of. let's get into it ✨

✨ NAME ✨

parport_ip32_frob_control — change bits from the DCR register 💅

no cap, that's the whole vibe: you're going in and flipping specific bits in the DCR and leaving everything else exactly where it was. surgical. precise. iconic.

🌸 SYNOPSIS 🌸

unsigned char parport_ip32_frob_control (struct parport *p , unsigned
char mask , unsigned char val );

look at her. returns an unsigned char, takes a struct parport *, an unsigned char mask and an unsigned char val. three args, one return, no drama 🦋

🫶 ARGUMENTS 🫶

  • p — pointer to struct parport. yes queen, you need the port first, that's just how it is 🙈
  • mask — bit mask of bits to change. this is the "which ones are we touching" list ✨
  • val — new value for changed bits. the "what are we setting them to" answer 💖

🔥 DESCRIPTION 🔥

okay so the tea is: this function is like __parport_ip32_frob_control's more responsible sibling. the difference? this one only allows you to change the value of DCR_STROBE, DCR_AUTOFD, DCR_nINIT, and DCR_SELECT. that's it. that's the whole guest list and the bouncer is not negotiable 💀

so if you were hoping to go feral on the other DCR bits — nope, not through this door, bestie. four bits. four. and honestly? that's a vibe check the kernel passes every time 👑

💜 SEE ALSO 💜

so the Kernel file is ./drivers/parport/parport_ip32.c and the first thing on the list is struct — and then bestie, buckle up, the whole extended friend group shows up 🫶

like, the entire friend group chat got added to the see-also. iykyk 💖

💀 reminder bestie: those four DCR bits are the only ones this one will touch — if you need the full send, that's the __parport_ip32_frob_control page's business, not ours 🍓

✨ that's the page!! ✨ sign-off time: this lil beauty lives in ./drivers/parport and is dated October 2026 — so yes, it's giving future-dated slay, no notes, periodt 💅🎀🦋

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