v4l2_ctrl_request_setup(9)

🌸 NAME 🌸

Okay bestie, welcome to v4l2_ctrl_request_setup(9) from the Kernel API Manual ✨ This lil icon is a helper function to apply control values in a request. That’s literally the whole name vibe. 💅

✨ SYNOPSIS ✨

int v4l2_ctrl_request_setup (struct media_request *req , struct
       v4l2_ctrl_handler *parent );

🎀 ARGUMENTS 🎀

• req — the request. Literally the request object, bestie. 💌
• parent — the parent control handler ('priv' in media_request_object_find). Yes, that exact 'priv', no cap. 🫶

🦋 DESCRIPTION 🦋

Okay so this is a helper function to call the control handler’s s_ctrl callback with the control values contained in the request. It’s giving “apply the request’s control values, please” energy. ✨

⚠️ Important vibe check: this approach of applying control values in a request is only applicable to memory-to-memory devices. Don’t try to make it main character anywhere else. 💀

🌈 SEE ALSO 🌈

Here’s the whole squad — every single reference, no skipping, periodt. 👑

• Kernel file: ./include/media/v4l2-ctrls.h — the kernel file, literally.
• union v4l2_ctrl_ptr(9)
• v4l2_ctrl_ptr_create(9)
• struct v4l2_ctrl_ops(9)
• struct v4l2_ctrl_type_ops(9)
• v4l2_ctrl_notify_fnc(9)
• struct v4l2_ctrl(9)
• struct v4l2_ctrl_ref(9)
• struct v4l2_ctrl_handler(9)
• struct v4l2_ctrl_config(9)
• v4l2_ctrl_fill(9)
• v4l2_ctrl_handler_init_class(9)
• v4l2_ctrl_handler_init(9)
• v4l2_ctrl_handler_free(9)
• v4l2_ctrl_lock(9)
• v4l2_ctrl_unlock(9)
• __v4l2_ctrl_handler_setup(9)
• v4l2_ctrl_handler_setup(9)
• v4l2_ctrl_handler_log_status(9)
• v4l2_ctrl_new_custom(9)
• v4l2_ctrl_new_std(9)
• v4l2_ctrl_new_std_menu(9)
• v4l2_ctrl_new_std_menu_items(9)
• v4l2_ctrl_new_std_compound(9)
• v4l2_ctrl_new_int_menu(9)
• v4l2_ctrl_filter(9)
• v4l2_ctrl_add_handler(9)
• v4l2_ctrl_radio_filter(9)
• v4l2_ctrl_cluster(9)
• v4l2_ctrl_auto_cluster(9)
• v4l2_ctrl_find(9)
• v4l2_ctrl_activate(9)
• __v4l2_ctrl_grab(9)
• v4l2_ctrl_grab(9)
• __v4l2_ctrl_modify_range(9)
• v4l2_ctrl_modify_range(9)
• __v4l2_ctrl_modify_dimensions(9)
• v4l2_ctrl_modify_dimensions(9)
• v4l2_ctrl_notify(9)
• v4l2_ctrl_get_name(9)
• v4l2_ctrl_get_menu(9)
• v4l2_ctrl_get_int_menu(9)
• v4l2_ctrl_g_ctrl(9)
• __v4l2_ctrl_s_ctrl(9)
• v4l2_ctrl_s_ctrl(9)
• v4l2_ctrl_g_ctrl_int64(9)
• __v4l2_ctrl_s_ctrl_int64(9)
• v4l2_ctrl_s_ctrl_int64(9)
• __v4l2_ctrl_s_ctrl_string(9)
• v4l2_ctrl_s_ctrl_string(9)
• __v4l2_ctrl_s_ctrl_compound(9)
• v4l2_ctrl_s_ctrl_compound(9)
• v4l2_ctrl_replace(9)
• v4l2_ctrl_merge(9)
• v4l2_ctrl_log_status(9)
• v4l2_ctrl_subscribe_event(9)
• v4l2_ctrl_poll(9)
• v4l2_ctrl_request_complete(9)
• v4l2_ctrl_request_hdl_find(9)
• v4l2_ctrl_request_hdl_put(9)
• v4l2_ctrl_request_hdl_ctrl_find(9)
• v4l2_queryctrl(9)
• v4l2_query_ext_ctrl_to_v4l2_queryctrl(9)
• v4l2_query_ext_ctrl(9)
• v4l2_querymenu(9)
• v4l2_g_ctrl(9)
• v4l2_s_ctrl(9)
• v4l2_g_ext_ctrls(9)
• v4l2_try_ext_ctrls(9)
• v4l2_s_ext_ctrls(9)
• v4l2_ctrl_subdev_subscribe_event(9)
• v4l2_ctrl_subdev_log_status(9)
• v4l2_ctrl_new_fwnode_properties(9)
• v4l2_ctrl_type_op_equal(9)
• v4l2_ctrl_type_op_init(9)
• v4l2_ctrl_type_op_log(9)
• v4l2_ctrl_type_op_validate(9)

Source/version: ./include/media · Date: October 2026 · Page: v4l2_ctrl_request_setup(9) 💜 Byeee, go apply those control values responsibly 🫶✨