tuner_lookup(9)

🌸 tuner_lookup(9) — Kernel API Manual 🌸

okay so bestie, this is the tuner_lookup(9) page from the Kernel API Manual, and it is literally all about seeking for tuner adapters ✨. no cap, it's giving “find the radio and TV tuners on this I2C adapter” energy, and we're gonna walk through it together 🫶.

✨ NAME ✨

tuner_lookup — Seek for tuner adapters. that's the whole name, periodt 💅.

🎀 SYNOPSIS 🎀

void tuner_lookup (struct i2c_adapter *adap , struct tuner **radio ,
       struct tuner **tv );

💅 ARGUMENTS 💅

• adap — the i2c_adapter struct. yes ma'am, that's the adapter we're checking 🎀.
• radio — pointer to be filled if the adapter is radio 📻. it gets the radio answer, iykyk.
• tv — pointer to be filled if the adapter is TV 📺. same vibe, but for TV.

🦋 DESCRIPTION 🦋

okay so the actual job: search for existing radio and/or TV tuners on the given I2C adapter, and it's discarding demod-only adapters (tda9887) 🙈. like, bye demod-only, not today.

and here's the note bestie, highkey important: when this function is called from tuner_probe you can be certain no other devices will be added/deleted at the same time — I2C core protects against that, fr fr 🛡️✨.

🌈 SEE ALSO 🌈

Kernel file ./drivers/media/v4l2-core/tuner-core.c, plus all these iconique references:

• enum tuner_pad_index(9)
• enum if_vid_dec_pad_index(9)
• set_type(9)
• tuner_s_type_addr(9)
• tuner_s_config(9)
• tuner_probe(9)
• tuner_remove(9)
• check_mode(9)
• set_mode(9)
• set_freq(9)
• set_tv_freq(9)
• tuner_fixup_std(9)
• set_radio_freq(9)
• tuner_status(9)
• tuner_standby(9)
• tuner_g_frequency(9)
• tuner_g_tuner(9)
• tuner_s_tuner(9)

and that's it, bestie 🫶 — the source/version is ./drivers/media/v4l2-core, and this page is dated October 2026. mwah, go slay your tuner lookups 💖👑