tuner_g_tuner(9)

💜 tuner_g_tuner — a Kernel API Manual moment

okay bestie, so this one lives in the Kernel API Manual and it's literally called tuner_g_tuner(9). the "g" is for get btw, iykyk. it's giving "hand me the tuner tea" energy and honestly? iconic.

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✨ NAME ✨

tuner_g_tuner — fill in tuner information 💅

like, that's the whole job. it fills in the tuner info. no cap.

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🦋 SYNOPSIS 🦋

int tuner_g_tuner (struct v4l2_subdev *sd , struct v4l2_tuner *vt );

that's the signature, copy it exactly please, i am begging 🫶

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🎀 ARGUMENTS 🎀

• sd — pointer to struct v4l2_subdev. yes bestie, the subdev. the main character of this whole situation.
• vt — pointer to struct v4l2_tuner. this is the one that comes back all filled in, like a glow-up but for a struct ✨

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🌸 DESCRIPTION 🌸

so when this returns, the structure vt will be all filled in with tuner information — but only if the tuner matches vt->type. like, it's gotta be the right match or nothing happens. vibe check first, info second 💖

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⭐ NOTE ⭐

vt->type has to be initialized before you call this. not optional, not a suggestion, it's the rule 🙈 and who does that init for you? either video_ioctl2 or the bridge driver. so like, somebody's already got you covered, but know that it's happening, okay? 😭

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👑 SEE ALSO 👑

the kernel file ./drivers/media/v4l2-core/tuner-core.c — go read it, it's tea ☕

and the whole squad:

• 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_lookup(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_s_tuner(9)

every single one, we don't skip the friends 💜

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that's the whole page bestie, slay 💅

source: ./drivers/media/v4l2-core — dated October 2026 🎀 mwah, see u in the next manpage 🦋✨