cs_dsp_coef...nd_read_ctrl(9)

📦 version 7.3.1, in nixpkgs unstable

💅 cs_dsp_coeff_lock_and_read_ctrl — like, the whole vibe

okay so bestie, welcome to the Kernel API Manual ✨ this is the page for cs_dsp_coeff_lock_and_read_ctrl(9), and honestly? she's a lil baddie with one job and she does it immaculately. let's get into it 🎀

✨ NAME ✨

cs_dsp_coeff_lock_and_read_ctrl — reads the given coefficient control into the given buffer 🫶 like, it takes the control, it takes your buffer, and it makes the data happen. no cap.

🌸 SYNOPSIS 🌸

int cs_dsp_coeff_lock_and_read_ctrl (struct cs_dsp_coeff_ctl *ctl ,
unsigned int off , void *buf , size_t len );

look at her. four parameters. zero drama. main character energy fr fr 💜

🦋 ARGUMENTS 🦋

  • ctl — pointer to the coefficient control 👑 this is the thing you're reading from, your little source of truth
  • off — the word offset at which the data should be read 📍 yes bestie, word offset, not byte offset, don't get it twisted
  • buf — the buffer where the data gets stored for the given control 🍓 she goes in the buffer
  • len — the length of the buffer, in bytes 📏 bytes this time, keep up, i believe in you

💖 DESCRIPTION 💖

So here's the tea: this is same as cs_dsp_coeff_read_ctrl ☕️ identical behaviour, no extra lore — except that it also takes pwr_lock 🔒

that's it. that's the whole difference. she locks, she reads, she serves 💅 the lock is the entire personality trait and honestly? iconic.

ngl if you were expecting a plot twist there isn't one, the lock IS the feature 🫶

⭐ RETURN ⭐

  • Zero for success 🎉 slay, you did it
  • a negative number on error 😭💀 yeah, that's the whole error reporting system, it's giving "we ball"

🌈 SEE ALSO 🌈

the girlies in the same file, all hanging out together — kernel file ./drivers/firmware/cirrus/cs_dsp.c is where the whole friend group lives 🧚

and that's the page babes 🎀 huge shoutout to source ./drivers/firmware/cirrus, dated October 2026 — she was born in the future and she's still out here reading coefficients. periodt. 💅✨🦋

📦 where this page comes from