snd_soc_component_test_bits(9)

📦 version 7.3.1, in nixpkgs unstable

💅 snd_soc_component_test_bits(9) — Kernel API Manual 🎀

okay bestie, welcome to the snd_soc_component_test_bits page ✨ this is from the Kernel API Manual, and honestly? it's a lil cutie. no cap.

✨ NAME ✨

snd_soc_component_test_bits — test a register for change 🌸

🦋 SYNOPSIS 🦋

int snd_soc_component_test_bits (struct snd_soc_component *component ,
unsigned int reg , unsigned int mask , unsigned int value );

like, that's the whole signature. four args, one int back. slay.

💖 ARGUMENTS 💖

  • component — the component. that's it. that's the description. she's self-explanatory and she knows it 💅
  • reg — the register you wanna test 🔍
  • mask — the mask that says which bits we're testing, iykyk 🎀
  • value — the value you're testing against ⭐

🌈 DESCRIPTION 🌈

so the vibe here is: you take a register, you hand it a new value, and it checks whether that new value is different from the old value. that's the whole gig. change detection, main character energy 👑

literally it's just "did this thing actually move or not" and honestly? relatable.

🔥 RETURN 🔥

  • 1 if there's a change 🔥
  • otherwise 0 💀

periodt. binary. no in-between.

🫶 SEE ALSO 🫶

it lives in the kernel file ./sound/soc/soc-component.c, and here's the whole friend group 🧚:

ngl this page is short but she ate. test those bits, bestie 💜

okay and finally, the lil sign-off: this one's filed under ./sound/soc and stamped October 2026 🌸 mwah, go read some registers 💖

📦 where this page comes from