__v4l2_devi...subdev_nodes(9)

✨ __v4l2_device_register_subdev_nodes(9) ✨

okay so first things first, the manual name is Kernel API Manual and this whole page is about the __v4l2_device_register_subdev_nodes function — yes that's a lot of words, we love her anyway 💖

🎀 NAME 🎀

__v4l2_device_register_subdev_nodes — registers device nodes for all the subdevs of the v4l2 device that are marked with the %V4L2_SUBDEV_FL_HAS_DEVNODE flag. that's it, that's the whole vibe check 🌸

🌈 SYNOPSIS 🌈

int __v4l2_device_register_subdev_nodes (struct v4l2_device *v4l2_dev,
                                         bool read_only);

🦋 ARGUMENTS 🦋

• v4l2_dev — pointer to struct v4l2_device. literally just the v4l2 device you're working with, bestie ✨
• read_only — the subdevices read-only flag. True to register the subdevices' device nodes in read-only mode, false to allow full access to the subdevice userspace API. so like… do you trust them or not 👀

👑 SEE ALSO 👑

Kernel file ./include/media/v4l2-device.h, plus all these icons, no cap:

• struct v4l2_device(9)
• v4l2_device_get(9)
• v4l2_device_put(9)
• v4l2_device_register(9)
• v4l2_device_set_name(9)
• v4l2_device_disconnect(9)
• v4l2_device_unregister(9)
• v4l2_device_register_subdev(9)
• v4l2_device_unregister_subdev(9)
• v4l2_device_register_subdev_nodes(9)
• v4l2_device_register_ro_subdev_nodes(9)
• v4l2_subdev_notify(9)
• v4l2_device_supports_requests(9)
• v4l2_device_for_each_subdev(9)
• __v4l2_device_call_subdevs_p(9)
• __v4l2_device_call_subdevs(9)
• __v4l2_device_call_subdevs_until_err_p(9)
• __v4l2_device_call_subdevs_until_err(9)
• v4l2_device_call_all(9)
• v4l2_device_call_until_err(9)
• v4l2_device_mask_call_all(9)
• v4l2_device_mask_call_until_err(9)
• v4l2_device_has_op(9)
• v4l2_device_mask_has_op(9)

that's the whole page, you ate that 🫶 and yes, this icon dropped from ./include/media in October 2026, so go forth and register those subdev nodes, bestie — read-only or full access, your call 💅⭐