snd_hda_gen_stream_pm(9)

💅 NAME 💅

snd_hda_gen_stream_pm — the stream power management callback, bestie ✨

So like, it's the manual page snd_hda_gen_stream_pm(9) from the Kernel API Manual, and it's literally all about one lil' callback that handles power stuff for streams 🎀

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✨ SYNOPSIS ✨

void snd_hda_gen_stream_pm (struct hda_codec *codec , hda_nid_t nid ,
bool on );

That's the whole signature, no cap — returns void, takes three things, done 💅

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🫶 ARGUMENTS 🫶

• codec — the HDA codec 🎧 (yes, the codec, the main character)
• nid — the audio widget, iykyk 🌸
• on — the power on/off flag ⚡ like, is it on or is it off, that's the whole vibe

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🦋 DESCRIPTION 🦋

Okay so here's the tea ☕ — you set this thing in hda_codec_ops.stream_pm. That's literally its job. It's the callback that lives there 🎀

⚠️ But listen — it's only valid with the power_save_node flag. Not valid without it. No flag, no callback, periodt 💀

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🌈 SEE ALSO 🌈

Kernel file ./sound/hda/codecs/generic.c — go read it, it's giving lore 📖✨

And these iconic lil' functions, all together now, no skipping any of them bestie 🙈:

• 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_mute_led_cdev(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_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)

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✨ that's the whole page, you ate that ✨ 🍓

And finally, the cute lil' sign-off 🎀: this one lives in ./sound/hda/codecs, it's dated October 2026, and it's filed under the title snd_hda_gen_stream_pm(9). Slay, bye 💜🧚