STRUCT AT91_GPIO_CHIP(9)

💖 struct at91_gpio_chip(9) 💖

okay bestie so this is a page straight outta the Kernel API Manual and it's literally all about struct at91_gpio_chip — the at91 gpio chip. no cap, that's the whole vibe. let's get into it 🎀

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✨ NAME ✨

struct at91_gpio_chip — at91 gpio chip. that's it, that's the name, she's iconic and she knows it 💅

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🌸 SYNOPSIS 🌸

here's the whole struct laid out for you, character for character, do not touch:

struct at91_gpio_chip {
    struct gpio_chip        chip;
    struct pinctrl_gpio_range range;
    struct at91_gpio_chip   *next;
    int pioc_hwirq;
    int pioc_virq;
    void __iomem            *regbase;
    struct clk              *clock;
    const struct at91_pinctrl_mux_ops *ops;
    u32 wakeups;
    u32 backups;
    u32 id;
 };

like, look at her. eleven members. main character energy fr fr 🧚

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🦋 Members 🦋

okay so every single field, one by one, no skipping, we're doing this properly:

• chip — the gpio chip. like, the actual gpio chip. that's the whole point bestie 💖
• range — the gpio range. she's ranging, that's her job ✨
• next — the bank that shares the same clock. siblings! sharing! we love a clock-sharing household 🫶
• pioc_hwirq — the PIO bank interrupt identifier on AIC. hardware-y. very real 🔥
• pioc_virq — the PIO bank Linux virtual interrupt. the virtual one, the software bestie of the one above 💜
• regbase — the PIO bank virtual address. it's a void __iomem *, so like, handle with care 🙈
• clock — the associated clock. the clock she's associated with. slay ⭐
• ops — the at91 pinctrl mux ops. it's a const struct at91_pinctrl_mux_ops *, and it's const so don't even think about it 💀
• wakeups — wakeup interrupts. the ones that wake you up, rude but necessary 🌈
• backups — interrupts disabled in suspend. napping interrupts, honestly same 😭
• id — the gpio chip identifier. her little name tag 🎀

ngl, every one of those members matters — this is not a "skim it" situation, this is a "read the whole struct" situation 💖

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💜 SEE ALSO 💜

go look at the kernel file ./drivers/pinctrl/pinctrl-at91.c — it's where all the lore lives, iykyk. and also these absolute icons:

• struct at91_pmx_func(9)
• struct at91_pmx_pin(9)
• struct at91_pin_group(9)
• struct at91_pinctrl_mux_ops(9)

read them all, in that order, bestie. you'll be so smart 🦋✨

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okay that's the page!! mwah 💋 this lil beauty lives under ./drivers/pinctrl and she's dated October 2026 — so like, future girlboss behaviour honestly 👑⭐ thanks for reading, love you, bye 🫶💖🎀