v4l2_ctrl_su...scribe_event(9)

📦 version 7.3.1, in nixpkgs unstable

💖 NAME 💖

v4l2_ctrl_subdev_subscribe_event — okay so this is the helper function bestie, the little icon whose whole job is to help you implement a &struct v4l2_subdev_core_ops subscribe_event function that literally just subscribes control events ✨ no cap, that's the entire vibe.

And yes, you're reading the kernel API manual, that's the manual name, we're in kernel-land now 🧚

🌸 SYNOPSIS 🌸

int v4l2_ctrl_subdev_subscribe_event (struct v4l2_subdev *sd , struct v4l2_fh *fh , struct v4l2_event_subscription *sub );

🎀 ARGUMENTS 🎀

  • sd — pointer to struct v4l2_subdev 🦋
  • fh — pointer to struct v4l2_fh 💜
  • sub — pointer to struct v4l2_event_subscription 🍓

Three pointers, three structs, zero drama. Slay.

🔥 SEE ALSO 🔥

Kernel file ./include/media/v4l2-ctrls.h — and honestly the whole control-ops friend group shows up here, so lemme introduce everybody 💅

Like, that's the whole group chat, everyone's invited 🫶 iykyk.

ngl bestie, if you only remember one thing: this helper exists so your subscribe_event can be a one-liner that just subscribes control events. That's it. That's the function. Periodt 💅

⭐ and that's a wrap! this page lives in ./include/media, it's dated October 2026, and it's filed under v4l2_ctrl_su...scribe_event(9) — yes the title is literally abbreviated like that, she's mysterious, she's iconic, we love her 👑🎀💖

📦 where this page comes from