snd_hdac_override_parm(9)

💅 snd_hdac_override_parm(9) — like, the Kernel API Manual page you didn't know you needed

okay so bestie, welcome to the Kernel API Manual ✨ and today's main character is snd_hdac_override_parm — the little function that lets you override read-only parameters. yes, you heard me. read-only. we're bending the rules today, no cap 🫶

✨ NAME ✨

snd_hdac_override_parm — override read-only parameters 💅

🌸 SYNOPSIS 🌸

int snd_hdac_override_parm (struct hdac_device *codec , hda_nid_t nid ,
unsigned int parm , unsigned int val );

🎀 ARGUMENTS 🎀

okay so here's the cast of characters, and yes they all matter:

• codec — the codec object 🧚 she's the whole reason we're here.
• nid — the NID for the parameter. literally the address of the thing you're poking.
• parm — the parameter to change. the actual vibe you're editing.
• val — the parameter value to overwrite. this is the new value, the glow-up, the fresh fit 🔥

👑 SEE ALSO 👑

Kernel file ./sound/hda/core/device.c — go read her, she's iconic 💖

the whole group chat, in order, fr fr:

• snd_hdac_device_init(9)
• snd_hdac_device_exit(9)
• snd_hdac_device_register(9)
• snd_hdac_device_unregister(9)
• snd_hdac_device_set_chip_name(9)
• snd_hdac_codec_modalias(9)
• snd_hdac_make_cmd(9)
• snd_hdac_exec_verb(9)
• snd_hdac_read(9)
• _snd_hdac_read_parm(9)
• snd_hdac_read_parm_uncached(9)
• snd_hdac_get_sub_nodes(9)
• snd_hdac_refresh_widgets(9)
• snd_hdac_get_connections(9)
• snd_hdac_power_up(9)
• snd_hdac_power_down(9)
• snd_hdac_power_up_pm(9)
• snd_hdac_power_down_pm(9)
• snd_hdac_stream_format_bits(9)
• snd_hdac_stream_format(9)
• snd_hdac_spdif_stream_format(9)
• snd_hdac_query_supported_pcm(9)
• snd_hdac_is_supported_format(9)
• snd_hdac_codec_read(9)
• snd_hdac_codec_write(9)
• snd_hdac_check_power_state(9)
• snd_hdac_sync_power_state(9)

and that's the whole page, bestie 🦋 this little number lives at ./sound/hda/core, dated October 2026 🌈 stay hydrated, back up your configs, and go override something read-only 💜✨