snd_hda_gen...ute_led_cdev(9)

💖 NAME 💖

snd_hda_gen_add_mute_led_cdev — okay so basically this function creates a LED classdev and enables it as your vmaster mute LED ✨

(also this page lives in the Kernel API Manual, and yes the header up top got truncated to snd_hda_gen...ute_led_cdev(9) because apparently even man pages have a character limit 😭 the full name is the one right above, we're fine)

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🌸 SYNOPSIS 🌸

int snd_hda_gen_add_mute_led_cdev (struct hda_codec *codec , int
       (*callback)(struct led_classdev *, enum led_brightness) );

that's the whole signature bestie, don't panic 🫶

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🎀 ARGUMENTS 🎀

• codec — the HDA codec 💅 like, the actual codec you're attaching the LED to
• callback — the callback for LED classdev brightness_set_blocking 🔥 that's the function that gets called to set brightness

ngl there's only two args here and that's genuinely it. short king of a function, we love to see it 👑

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🦋 SEE ALSO 🦋

the kernel file lives at ./sound/hda/codecs/generic.c — go read it, it's giving main character energy 💜 and while you're there, here's the whole friend group, no cap, all of them, not skipping a single one:

• snd_hda_gen_spec_init(9)
• snd_hda_gen_add_kctl(9)
• snd_hda_get_path_idx(9)
• snd_hda_get_path_from_idx(9)
• snd_hda_add_new_path(9)
• snd_hda_activate_path(9)
• snd_hda_gen_add_micmute_led_cdev(9)
• snd_hda_gen_fix_pin_power(9)
• snd_hda_gen_update_outputs(9)
• snd_hda_gen_hp_automute(9)
• snd_hda_gen_line_automute(9)
• snd_hda_gen_mic_autoswitch(9)
• snd_hda_gen_path_power_filter(9)
• snd_hda_gen_stream_pm(9)
• snd_hda_gen_shutup_speakers(9)
• snd_hda_gen_parse_auto_config(9)
• snd_hda_gen_build_controls(9)
• snd_hda_gen_build_pcms(9)
• snd_hda_gen_init(9)
• snd_hda_gen_remove(9)
• snd_hda_gen_check_power_status(9)

like literally the entire extended cast, iykyk 🌈

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okay that's the whole page — ily, go blink that mute LED 🌟

✿ about this page ✿ it's from ./sound/hda/codecs, dated October 2026, and that's the Kernel API Manual signing off 💅✨🎀