meson_calc_reg_and_bit(9)

💅 meson_calc_reg_and_bit(9) — the Kernel API Manual moment

okay so bestie, welcome to the Kernel API Manual entry for meson_calc_reg_and_bit(9) ✨ this is the little helper that literally does the math so you don't have to — it figures out the register and the bit for a pin 🎀

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✨ NAME ✨

meson_calc_reg_and_bit — calculate register and bit for a pin 🧚

no cap, that's the whole job. it computes. it slays. periodt 💅

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🦋 SYNOPSIS 🦋

void meson_calc_reg_and_bit (const struct meson_bank *bank , unsigned
       int pin , enum meson_reg_type reg_type , unsigned int *reg , unsigned
       int *bit );

look at that signature. iconic. it returns void because it doesn't hand you a value back — it fills in the pointers you gave it 😌

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🌸 ARGUMENTS 🌸

• bank — the bank that's holding your pin 🏦 like, which bank is it in, bestie
• pin — the pin number 🔢 the actual number of the pin you're obsessed with
• reg_type — the type of register you need (pull-enable, pull, etc...) 🎀 yes it's one of those meson_reg_type situations
• reg — the computed register offset 📍 this is where the answer lands
• bit — the computed bit ⭐ and this is where the other answer lands

heads up: reg and bit are unsigned int * — they're output params, so the function writes into them. you bring the pointers, it brings the math 🫶

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/pinctrl/meson/pinctrl-meson.c — go read the source, it's giving main character energy 📖
• meson_get_bank(9) — the sibling function, the way that they're a matched set 😭💖

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and that's the whole vibe check 🌈 ngl this one is short and sweet — the manual page lives at ./drivers/pinctrl/meson, dated October 2026, and it's the meson_calc_reg_and_bit(9) page you just read 💜 byeee, go calculate some registers 🦋✨