v4l2_event_queue(9)

✨ v4l2_event_queue(9) ✨

okay so bestie, welcome to the Kernel API Manual entry for v4l2_event_queue 💅 this one is short and sweet and honestly kind of iconic — no cap 💖

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🦋 NAME 🦋

v4l2_event_queue — queue events to a video device. like, you're literally sliding an event into the video device's DMs 📨✨

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🌸 SYNOPSIS 🌸

void v4l2_event_queue (struct video_device *vdev , const struct
       v4l2_event *ev );

like yes it's void, it returns nothing, it just does the thing and dips 🫶

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🎀 ARGUMENTS 🎀

• vdev — pointer to struct video_device. this is the video device in question, the main character of this whole operation 👑
• ev — pointer to struct v4l2_event. the event itself, the payload, the moment 🍓

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💜 DESCRIPTION 💜

The event will be queued for all struct v4l2_fh file handlers. all of them. every single one. no favorites, no picking who gets it — the event goes out to the whole group chat fr fr 💌

NOTE: 🫶 the driver's only responsibility is to fill in the type and the data fields. the other fields will be filled in by V4L2. so like, don't overthink it, bestie — do your two little fields and let V4L2 handle the rest ✨

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🌈 SEE ALSO 🌈

kernel file ./include/media/v4l2-event.h plus the whole friend group, iykyk:

• struct v4l2_kevent(9)
• struct v4l2_subscribed_event_ops(9)
• struct v4l2_subscribed_event(9)
• v4l2_event_dequeue(9)
• v4l2_event_queue_fh(9)
• v4l2_event_wake_all(9)
• v4l2_event_pending(9)
• v4l2_event_subscribe(9)
• v4l2_event_unsubscribe(9)
• v4l2_event_unsubscribe_all(9)
• v4l2_event_subdev_unsubscribe(9)
• v4l2_src_change_event_subscribe(9)
• v4l2_src_change_event_subdev_subscribe(9)

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and that's the whole page bestie, short king energy 💀💖 it lives in ./include/media, dated October 2026, and it's part of the Kernel API Manual — go forth and queue those events, slay 👑✨🌸