vimc_ent_sd_register(9)

💅 vimc_ent_sd_register — Kernel API Manual, but make it make sense ✨

okay so bestie, listen — the manual name for this one is vimc_ent_sd_register(9), and it's literally the glow-up function for subdev nodes in the VIMC topology. Let's get into it 🎀

🌸 NAME 🌸

vimc_ent_sd_register — initialize and register a subdev node. that's it, that's the vibe 🦋

✨ SYNOPSIS ✨

int vimc_ent_sd_register (struct vimc_ent_device *ved , struct
v4l2_subdev *sd , struct v4l2_device *v4l2_dev , const char *const name
, u32 function , u16 num_pads , struct media_pad *pads , const struct
v4l2_subdev_internal_ops *int_ops , const struct v4l2_subdev_ops *sd_ops
);

like yes it's a long function signature but we don't gatekeep here 💅 it returns an int, and it takes a lot of stuff, all listed below, no cap.

🫶 ARGUMENTS 🫶

• ved — the vimc_ent_device struct to be initialize. she's getting set up 💖
• sd — the v4l2_subdev struct to be initialize and registered. yes she gets both treatments ✨
• v4l2_dev — the v4l2 device to register the v4l2_subdev with. matching them up fr fr 🎀
• name — name of the sub-device. Please notice that the name must be unique. not me stressing this — the manpage says notice it, so we notice it 😭🙈
• function — media entity function, defined by the MEDIA_ENT_F_* macros. iconic macro family ngl 🔥
• num_pads — number of pads to initialize 🦋
• pads — the array of pads of the entity, and heads up: the caller should set the flags of the pads. that's on you bestie, not her 💀
• int_ops — pointer to struct v4l2_subdev_internal_ops. 🎀
• sd_ops — pointer to struct v4l2_subdev_ops. ⭐

🌈 DESCRIPTION 🌈

Helper function initialize and register the struct vimc_ent_device and struct v4l2_subdev which represents a subdev node in the topology. she's giving main character energy in the topology, lowkey carrying the whole node setup 🫶👑

💜 SEE ALSO 💜

• Kernel file ./drivers/media/test-drivers/vimc/vimc-common.h 📁
• vimc_colorimetry_clamp(9), struct vimc_pix_map(9), struct vimc_ent_device(9), struct vimc_device(9), struct vimc_ent_type(9), struct vimc_ent_config(9), vimc_is_source(9), vimc_pix_map_by_index(9), vimc_mbus_code_by_index(9), vimc_pix_map_by_code(9), vimc_pix_map_by_pixelformat(9), vimc_vdev_link_validate(9) — the whole friend group, go say hi 💖

ok that's the whole page, every argument and reference accounted for, nothing skipped, iykyk ✨

and that's a wrap bestie 🎀 this cutie comes from the kernel source path ./drivers/media/test-drivers/vimc, dated October 2026, and it lives under the vimc_ent_sd_register(9) name — slay, go register some subdevs responsibly 💅💖