snd_hdac_regmap_read(9)

💖 snd_hdac_regmap_read(9) 💖

okay so bestie, welcome to the snd_hdac_regmap_read page — it's from the Kernel API Manual (yes, the actual kernel one, we're fancy now) and honestly it's giving "small function, big responsibilities" ✨

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🌸 NAME 🌸

snd_hdac_regmap_read — read a verb, but with caching, bestie 💅 the cache is the whole point, don't sleep on it

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🦋 SYNOPSIS 🦋

int snd_hdac_regmap_read (struct hdac_device *codec , hda_nid_t nid ,
       unsigned int verb , unsigned int *val );

like, four arguments, one int back, no cap 🫶

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🎀 ARGUMENTS 🎀

• codec — the HD-audio codec, your main character in this whole situation 👑
• nid — the codec NID (it's the node id, and yes you need it, don't skip it)
• verb — the verb you wanna read, literally the thing you're asking about 🔥
• val — a pointer where the value gets stored, that's where the good stuff lands 💖

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✨ DESCRIPTION ✨

so the vibe here is you're reading a verb, and the caching is doing its lil thing behind the scenes 🧚

⚠️ real talk though: if you're trying to read an amp value, use snd_hda_regmap_get_amp instead. that's the one for amps. iykyk 💀

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💀 RETURN 💀

• 0 — slay, it worked 💅
• a negative error code — not slay, something went wrong 😭

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🌈 SEE ALSO 🌈

kernel file ./include/sound/hda_regmap.h (yeah, that's where the header lives 🍓) and all these besties:

• snd_hdac_regmap_encode_verb(9)
• snd_hdac_regmap_encode_amp(9)
• snd_hdac_regmap_encode_amp_stereo(9)
• snd_hdac_regmap_write(9)
• snd_hdac_regmap_update(9)
• snd_hdac_regmap_get_amp(9)
• snd_hdac_regmap_update_amp(9)
• snd_hdac_regmap_get_amp_stereo(9)
• snd_hdac_regmap_update_amp_stereo(9)
• snd_hdac_regmap_sync_node(9)

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and that's the whole page, bestie 🫶 mwah 💋 this one came from ./include/sound, October 2026 vintage — stay iconic, go read some verbs ⭐👑