STRUCT FDP1_FMT(9)

💅 struct fdp1_fmt(9) — the inside scoop

okay so bestie, welcome to struct fdp1_fmt(9)</kbd></pink> — no wait, it's just struct fdp1_fmt(9)`, the manual page for The FDP1 internal format data. yes that's the whole vibe: it's a C struct that holds the tea on how the FDP1 hardware wants its formats laid out. internal format data, main character energy only 🎀

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✨ NAME ✨

struct fdp1_fmt — the FDP1 internal format data 🦋

like, the format struct. the one that knows things. iykyk.

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🌸 SYNOPSIS 🌸

here's the whole struct, character for character, do not touch:

struct fdp1_fmt {
    u32 fourcc;
    u8 bpp[3];
    u8 num_planes;
    u8 hsub;
    u8 vsub;
    u8 fmt;
    bool swap_yc;
    bool swap_uv;
    u8 swap;
    u8 types;
 };

look at her. ten fields. iconic. 👑

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🧚 Members 🧚

okay so let's go through every single one because we do NOT skip members in this house:

• fourcc — the fourcc code, and its whole job is to match the V4L2 API. like it's the ID that lets V4L2 recognise her 💖
• bpp — bits per pixel per plane. yes, per plane, so it's an array of 3. maths girlie 🍓
• num_planes — number of planes. how many planes we're dealing with, fr fr.
• hsub — horizontal subsampling factor. the horizontal situation ✨
• vsub — vertical subsampling factor. and the vertical one. balanced, as all things should be 🌈
• fmt — a 7-bit format code for the fdp1 hardware. seven bits. not eight. seven. don't come for me, that's just what it is 💀
• swap_yc — the Y and C components are swapped, aka Y comes before C. order matters bestie 🫶
• swap_uv — the U and V components are swapped, aka V comes before U. same energy, different letters 😭
• swap — swap register control. that's it, that's the description, she's mysterious like that 🙈
• types — types of queue this format is applicable to. plural types. queue applicability. very demure 🌸

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👑 SEE ALSO 👑

• Kernel file ./drivers/media/platform/renesas/rcar_fdp1.c — go read the source, that's where she lives 💜

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lowkey reminder: every field above is doing real work in the FDP1 driver, so if you're poking at this struct, keep the names and types exactly as written. no cap. 🔥

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and that's the page!! 🎀 this lil manual comes from ./drivers/media/platform/renesas, dated October 2026, and it's page struct fdp1_fmt(9) of the Kernel API Manual — mwah, slay, bye bestie 💅✨