snd_hda_jack_detect_enable(9)

💖 snd_hda_jack_detect_enable(9) 💖

okay bestie so we're in the Kernel API Manual today and the star of the show is snd_hda_jack_detect_enable — literally the glow-up button for jack detection ✨

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🌸 NAME 🌸

snd_hda_jack_detect_enable — turn on the jack detection on the pin you point at, no cap 🎀

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🦋 SYNOPSIS 🦋

int snd_hda_jack_detect_enable (struct hda_codec *codec , hda_nid_t nid
, int dev_id );

it's giving "three args, one int back," very demure, very minimal 💅

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✨ ARGUMENTS ✨

• codec — the HDA codec itself, your main character struct 🫶
• nid — the pin NID where you want jack detection switched on 🔥
• dev_id — the pin device entry id, the little number that tells things apart 👑

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💜 DESCRIPTION 💜

so what does it actually do? it enables jack detection using the default callback — that's the built-in one, nothing custom, iykyk 🌈

Returns 0 if it worked, or a negative error code if it didn't 😭 like, no in-between, no vibes-based answer, just zero-or-negative, periodt.

ngl bestie, always check that return value. negative error codes are the opps 💀

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🎀 SEE ALSO 🎀

the whole friend group lives in the kernel file ./sound/hda/common/jack.c — go say hi to all of them 💖

• is_jack_detectable(9)
• snd_hda_jack_tbl_get_mst(9)
• snd_hda_jack_tbl_get_from_tag(9)
• snd_hda_jack_tbl_new(9)
• snd_hda_jack_set_dirty_all(9)
• snd_hda_jack_pin_sense(9)
• snd_hda_jack_detect_state_mst(9)
• snd_hda_jack_detect_enable_callback_mst(9)
• snd_hda_jack_set_gating_jack(9)
• snd_hda_jack_bind_keymap(9)
• snd_hda_jack_set_button_state(9)
• snd_hda_jack_report_sync(9)
• snd_hda_jack_add_kctl_mst(9)
• snd_hda_jack_add_kctls(9)
• snd_hda_jack_unsol_event(9)
• snd_hda_jack_poll_all(9)

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and that's the tea 🍓 this icon lives in ./sound/hda/common, dated October 2026 — screenshot it, cite it, slay 💅💜