STRUCT FIMC_ISP(9)

🦋 struct_fimc_isp(9) — the FIMC-IS ISP data structure 🦋

okay bestie, so this is straight out of the Kernel API Manual (section 9, kernel space, no cap) and it's literally the glow-up blueprint for struct fimc_isp, the FIMC-IS ISP data structure. think of it as the main character's whole personality laid out in C. 💅

✨ SYNOPSIS ✨

here's the whole fit, verbatim, not a single field out of place:

struct fimc_isp {
    struct platform_device          *pdev;
    struct v4l2_subdev              subdev;
    struct media_pad                subdev_pads[FIMC_ISP_SD_PADS_NUM];
    struct v4l2_mbus_framefmt       src_fmt;
    struct v4l2_mbus_framefmt       sink_fmt;
    struct v4l2_ctrl                *test_pattern;
    struct fimc_isp_ctrls           ctrls;
    struct mutex                    video_lock;
    struct mutex                    subdev_lock;
    unsigned int                    cac_margin_x;
    unsigned int                    cac_margin_y;
    unsigned long                   state;
    struct fimc_is_video            video_capture;
};

like, look at her. she's beautiful. 🎀

🌸 Members 🌸

okay so let's meet the cast, member by member, no one gets skipped:

• pdev — pointer to the FIMC-IS platform device. the anchor, the origin story.
• subdev — the ISP v4l2_subdev. iconic V4L2 representation.
• subdev_pads — the ISP subdev media pads. it's an array, [FIMC_ISP_SD_PADS_NUM] of them, and that number is literally in the synopsis so don't come for me.
• src_fmt — source mediabus format. where the pixels are coming from, iykyk.
• sink_fmt — sink mediabus format. where they're going. the destination vibe.
• test_pattern — test pattern controls. yes, a struct v4l2_ctrl *, yes it's a pointer, and yes we stan a debugging feature.
• ctrls — the struct fimc_isp_ctrls v4l2 controls structure. all the knobs live here.
• video_lock — a struct mutex that serializes video device operations. one at a time, bestie, please. 🔒
• subdev_lock — a struct mutex that serializes subdev operations. same energy, different lock.
• cac_margin_x — horizontal CAC margin in pixels. an unsigned int, obviously.
• cac_margin_y — vertical CAC margin in pixels. the y-axis twin of the line above. 🫶
• state — driver state flags, chillin' as an unsigned long.
• video_capture — the ISP block video capture device, a struct fimc_is_video. the whole reason we're here tbh. 📸

🔥 SEE ALSO 🔥

• Kernel file ./drivers/media/platform/samsung/exynos4-is/fimc-isp.h — go read the source, that's where the lore lives
• struct fimc_isp_frame(9)
• struct fimc_is_video(9)

and that's the whole page, periodt. 💖 shoutout to the source ./drivers/media/platform/samsu... and the October 2026 date, and of course to struct fimc_isp(9) herself — see you in the kernel, bestie. 🌈👑