cmdq_pkt_write_mask(9)

📦 version 7.3.1, in nixpkgs unstable

✨ cmdq_pkt_write_mask(9) ✨

okay so bestie, this is a page from the Kernel API Manual and it's literally about cmdq_pkt_write_mask — appending a write command with a mask to the CMDQ packet 💅 no cap, that's the whole NAME section, we move.

🌸 SYNOPSIS 🌸

int cmdq_pkt_write_mask (struct cmdq_pkt *pkt , u8 subsys , u16 offset ,
u32 value , u32 mask );

that's it. that's the signature. it returns an int, she's giving "I might fail and I'll tell you why" energy 🎀

🦋 ARGUMENTS 🦋

  • pkt — the CMDQ packet 💖 literally the packet you're stuffing this command into.
  • subsys — the CMDQ sub system code 🔥 it's a u8, so keep it cute and small.
  • offset — register offset from CMDQ sub system ✨ a u16, iykyk.
  • value — the specified target register value 👑 this is the actual number you want in there.
  • mask — the specified target register mask 🌈 the mask that decides which bits of value actually get to be main character.

⭐ RETURN ⭐

0 for success 🫶 otherwise the error code is returned — so like, check it, don't just vibe past it 😭

fr fr: 0 means slay, anything else means something went sideways and you should look at the error code.

🧚 SEE ALSO 🧚

Kernel file ./include/linux/soc/mediatek/mtk-cmdq.h 💜 — go read it, it's giving source of truth.

then the whole friend group, and yes we're listing every single one because the original said so:

that's the whole page, bestie 💅 this cutie lives at ./include/linux/soc/mediatek, dated October 2026, and she answers to cmdq_pkt_write_mask(9) — mwah, go write some masked registers 🎀✨

📦 where this page comes from