cmdq_pkt_write_mask_subsys(9)

📦 version 7.3.1, in nixpkgs unstable

💅 cmdq_pkt_write_mask_subsys — Kernel API Manual ✨

Okay bestie, so this is a page from the Kernel API Manual, and it's about cmdq_pkt_write_mask_subsys(9) — literally the function that appends a write command with a mask to the CMDQ packet, except it does it with subsys. Two for the price of one, no cap. 🎀

🌸 NAME 🌸

cmdq_pkt_write_mask_subsys — append write command with mask to the CMDQ packet with subsys. That's it, that's the whole vibe. 💖

✨ SYNOPSIS ✨

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

She takes six things and returns an int. Iconic signature, honestly. 🫶

💅 ARGUMENTS 💅

  • pkt — the CMDQ packet. Your main character. Everything gets appended to her. 👑
  • subsys — the CMDQ sub system code. It's a u8, so keep it cute and small. ⭐
  • pa_base — unused parameter. Yep. She's there, she's in the signature, she does nothing. We still respect her. 💀
  • offset — register offset from CMDQ sub system. A u16, so mind your range. 🌸
  • value — the specified target register value. This is the value. That's the whole job. 💖
  • mask — the specified target register mask. The specified one. Not any other mask. 🔥

🦋 RETURN 🦋

0 for success; else the error code is returned. So like — zero means slay, anything else means go read your error code, bestie. 😭

🌈 SEE ALSO 🌈

The lore lives in the kernel file ./include/linux/soc/mediatek/mtk-cmdq.h — go read it, iykyk. 📖

And here's the whole friend group, fr fr:

Lowkey a whole squad. Go say hi to all of them. 🫶

✨ and that's the page!! ✨ This lil beauty comes from ./include/linux/soc/mediatek, dated October 2026, and she's filed under cmdq_pkt_write_mask_subsys(9) forever. Bye bestie, go append some masked writes 💅💖🎀

📦 where this page comes from