STRUCT V4L2_FLASH_OPS(9)

🌸 struct v4l2_flash_ops(9) 🌸

okay bestie, welcome to the Kernel API Manual ✨ — this is the page for struct v4l2_flash_ops, aka the V4L2 flash operations bundle. Think of it as the little bundle of function pointers that tells the kernel "hey, here's how this flash hardware does its thing" 💅

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💖 NAME 💖

struct v4l2_flash_ops — V4L2 flash operations, no cap

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✨ SYNOPSIS ✨

struct v4l2_flash_ops {
    int (*external_strobe_set)(struct v4l2_flash *v4l2_flash, bool
enable);
    enum led_brightness (*intensity_to_led_brightness) (struct
v4l2_flash *v4l2_flash, s32 intensity);
    s32 (*led_brightness_to_intensity) (struct v4l2_flash *v4l2_flash,
enum led_brightness);
 };

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🎀 Members 🎀

• external_strobe_set — this is the one that sets up strobing the flash by asserting the hardware pin state 🫶 literal "flip the pin, make it strobe" energy.
• intensity_to_led_brightness — converts intensity into brightness, and it does it in a device specific manner 🦋 (iykyk — every chip has opinions).
• led_brightness_to_intensity — the reverse glow-up: converts brightness back to intensity, again in a device specific manner 💅

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👑 SEE ALSO 👑

Kernel file ./include/media/v4l2-flash-led-class.h, plus the whole friend group:

• struct v4l2_flash_ctrl_data(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)

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💀 reminder that these callbacks are device specific by design — the struct doesn't do the math for you, it just hands you the hooks. Slay responsibly 🧚

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and that's the whole page, bestie 💖 brought to you by ./include/media, dated October 2026 — struct v4l2_flash_ops(9), out ✌️🌈⭐