v4l_enable_media_source(9)

💅 v4l_enable_media_source(9) — like, the Kernel API Manual page, bestie 🎀

okay so real talk, this is the page for v4l_enable_media_source, straight out of the Kernel API Manual. It's short, it's sweet, it's giving "one job and it does it well" energy ✨

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🌸 NAME 🌸

v4l_enable_media_source — grab the media source for exclusive use, but only if it's actually free 👑

🦋 SYNOPSIS 🦋

int v4l_enable_media_source (struct video_device *vdev );

✨ ARGUMENTS ✨

• vdev — a pointer to struct video_device. that's it, that's the whole argument, she's low maintenance 💅

💖 DESCRIPTION 💖

so here's the vibe: this interface calls the enable_source handler to figure out whether the media source is free for use. that's the whole question, "is anyone using this?" 🫶

the enable_source handler is the one carrying the actual responsibility here — it checks whether the media source is free and starts a pipeline between the media source and the media entity that's associated with the video device. no cap, that's a whole two-step and the handler owns both of them 🎀

important note, bestie: this interface is meant to be called from the v4l2-core and dvb-core interfaces that change the source configuration. like, that's its whole social circle. periodt. 💀

🔥 RETURN 🔥

it returns zero on success, or a negative error code if things did not slay 😭

🌈 SEE ALSO 🌈

• the kernel file ./include/media/v4l2-mc.h 👑
• v4l2_mc_create_media_graph(9)
• v4l_disable_media_source(9)
• v4l2_create_fwnode_links_to_pad(9)
• v4l2_create_fwnode_links(9)
• v4l2_pipeline_pm_get(9)
• v4l2_pipeline_pm_put(9)
• v4l2_pipeline_link_notify(9)

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and that's the whole page, fr fr 💜 this little icon lives over in ./include/media, dated October 2026 — so go read the others, iykyk 🧚⭐