snd_hdac_re...ate_raw_once(9)

✨ NAME ✨

okay so bestie, meet snd_hdac_regmap_update_raw_once — straight out of the Kernel API Manual, and its whole personality is “initialize the register value only once.” 💅✨

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🌸 SYNOPSIS 🌸

int snd_hdac_regmap_update_raw_once (struct hdac_device *codec ,
unsigned int reg , unsigned int mask , unsigned int val );

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🎀 ARGUMENTS 🎀

• codec — the codec object, aka the lil device bestie we’re working with 🫶
• reg — pseudo register. yes ma’am, that’s the register spot ✨
• mask — bit mask to update 🔥
• val — value to update 💖

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🦋 DESCRIPTION 🦋

so here’s the vibe: this function performs the update of the register bits only once, when the register hasn’t been initialized yet. it’s giving one-time setup main character energy, no cap. 👑

it’s used in the HD-audio legacy driver — periodt. 💅

returns zero if successful, or a negative error code. that’s the whole mood. 😭🌿

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🌈 SEE ALSO 🌈

kernel file: ./sound/hda/core/regmap.c — yes, that’s the spot, iykyk 🧚

• snd_hdac_regmap_init(9)
• snd_hdac_regmap_exit(9)
• snd_hdac_regmap_add_vendor_verb(9)
• snd_hdac_regmap_write_raw(9)
• snd_hdac_regmap_read_raw(9)
• snd_hdac_regmap_update_raw(9)
• snd_hdac_regmap_sync(9)

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mwah 💋 this cutie’s source/version is ./sound/hda/core, dated October 2026 — iconic, fr fr. 🎀✨