nau8825_calc_fll_param(9)

💅 nau8825_calc_fll_param — it's giving "calculate FLL parameters" ✨

okay so bestie, this one lives in the Kernel API Manual (section 9, iykyk — that's the kernel API section, we don't make the rules we just vibe with them). It's a little function that does exactly one thing and does it slay: it figures out your Fractional-N Locked Loop parameters so the codec can actually be configured. No cap, it's a math girlie. 🧮💖

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🌸 SYNOPSIS 🌸

int nau8825_calc_fll_param (unsigned int fll_in , unsigned int fs ,
       struct nau8825_fll *fll_param );

That's the whole signature, bestie. Don't touch it, don't "fix" it, it's perfect as is. 🫶

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🎀 ARGUMENTS 🎀

• fll_in — the external clock that's being fed into the codec. Like, that's the input signal coming from outside, the main character of the operation. ⏰
• fs — the sampling rate. literally the sample rate, bestie. the speed at which samples happen. you know this. 🙈
• fll_param — a pointer to the structure of FLL parameters. it's a struct nau8825_fll *, so it's been through some things, and this function is gonna fill it in. 👑

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✨ DESCRIPTION ✨

So the whole vibe of this function is: calculate FLL parameters to configure the codec. That's it! That's the job! It crunches the numbers so the codec can be configured properly, and then it tells you how it went. 💅

And the return value? Iconic behavior honestly:

Returns 0 for success or a negative error code. So if you see 0, she ate. 🌈 If you see something negative, uh, she's telling you something went wrong — that's your error code, go read it. 😭

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🦋 SEE ALSO 🦋

Bestie, this function runs with a whole friend group, fr fr. The kernel file in question is ./sound/soc/codecs/nau8825.c, and here's everyone it hangs out with:

• nau8825_sema_acquire(9)
• nau8825_sema_release(9)
• nau8825_sema_reset(9)
• nau8825_hpvol_ramp(9)
• nau8825_intlog10_dec3(9)
• nau8825_xtalk_sidetone(9)
• nau8825_set_tdm_slot(9)
• nau8825_enable_jack_detect(9)

go read all of them, they're all in ./sound/soc/codecs too, the squad stays together 💜

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And that's the page! Sourced from ./sound/soc/codecs, dated October 2026, sitting pretty in the Kernel API Manual. mwah 💋✨ go forth and configure that codec, bestie — you got this! 🎀🔥💖