si570_calc_divs(9)

🎀 NAME 🎀

si570_calc_divs — the little function that does your clock divider math for you, bestie ✨

Oh, and real quick — this page lives in the Kernel API Manual, so you know it's the real deal. 💅

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🦋 SYNOPSIS 🦋

int si570_calc_divs (unsigned long frequency , struct clk_si570 *data ,
u64 *out_rfreq , unsigned int *out_n1 , unsigned int *out_hs_div );

Like, that's the whole vibe right there. Five args, one int back. Iconic.

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🌸 ARGUMENTS 🌸

Okay so here's the rundown on each one, no cap:

• frequency — the target frequency you're aiming for. The dream. The goal. Your main character number. 🔥
• data — the driver data structure. It's a struct clk_si570, and yes you must bring it, it's not optional. 🤝
• out_rfreq — the RFREG fractional multiplier, and heads up, this one's an output 💖 (it's a u64 *, so it writes back into whatever you point at).
• out_n1 — Clock divider N1, also an output ✨ (unsigned int *, get those pointers ready).
• out_hs_div — Clock divider HSDIV, another output 🫶 (also unsigned int *).

And bestie, listen — out_hs_div carries the return info too: Returns 0 on success, negative errno otherwise. So check it. Fr fr. 😭

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💜 DESCRIPTION 💜

So what does it actually do? It calculates the clock dividers (out_hs_div, out_n1) and the clock multiplier (out_rfreq) for a given target frequency. That's it. That's the whole job. And honestly? It ate. 👑

Like, you hand it a frequency, it does the math on the dividers and the multiplier, and it drops the answers into your output pointers. Respect the pipeline. 🌈

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⭐ SEE ALSO ⭐

Go read these next, iykyk:

• The kernel file ./drivers/clk/clk-si570.c — that's where the source lives, go peek 👀
• struct clk_si570_info(9)
• struct clk_si570(9)
• si570_get_divs(9)
• si570_get_defaults(9)
• si570_update_rfreq(9)
• si570_set_frequency(9)
• si570_set_frequency_small(9)

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That's the page, babes 💅 This lil' slice of kernel API manual goodness came from ./drivers/clk, dated October 2026 — and it's called si570_calc_divs(9), in case you forgot already 🙈. Go calculate some dividers, you've got this 🎀💖✨