STRUCT V4L2_FLASH_CTRL_DATA(9)

💖 struct v4l2_flash_ctrl_data(9) 💖

okay so bestie, welcome to the Kernel API Manual page for struct v4l2_flash_ctrl_data — yes it's a whole mouthful, and yes it's iconic. this is the lil data holder that carries your flash control initialization data, all filled in basing on the features declared by the LED flash class driver in the v4l2_flash_config. no cap, that's literally its whole job. 🫶

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✨ NAME ✨

struct v4l2_flash_ctrl_data — flash control initialization data, filled basing on the features declared by the LED flash class driver in the v4l2_flash_config. that's it, that's the vibe. 💅

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🌸 SYNOPSIS 🌸

struct v4l2_flash_ctrl_data {
    struct v4l2_ctrl_config config;
    u32 cid;
 };

like, look at her. two fields. main character energy only. ✨

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🎀 Members 🎀

okay so the members, let's go, one by one, no skipping, i would never 🫶

• config — initialization data for a control. that's the setup info, the little starter pack for your control, if you will. 🍓
• cid — contains the v4l2 flash control id if the config field was initialized, and 0 otherwise. so bestie, read it like this: if config got initialized, cid has the actual id; if not, it's 0. don't get it twisted. 💀

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🦋 SEE ALSO 🦋

the whole friend group, fr fr — and yes, the kernel file is literally part of the list:

• Kernel file ./include/media/v4l2-flash-led-class.h
• struct v4l2_flash_ops(9)
• struct v4l2_flash_config(9)
• struct v4l2_flash(9)
• v4l2_subdev_to_v4l2_flash(9)
• v4l2_ctrl_to_v4l2_flash(9)
• v4l2_flash_init(9)
• v4l2_flash_indicator_init(9)
• v4l2_flash_release(9)

go read them, bestie. iykyk. 👑

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that's the whole page, mwah 💋 this lil gem lives in ./include/media, dated October 2026, and it's filed under struct v4l2_flash_ctrl_data(9) — periodt. 🧚💜