STRUCT DIO48E_GPIO(9)

✨ struct dio48e_gpio — your fave lil GPIO data structure ✨

Okay bestie, so this is a kernel API manual page — it lives in the Kernel API Manual family, and the star of the show today is a struct called struct dio48e_gpio. It's giving GPIO device private data structure energy 💅 — literally the little private clubhouse where the driver for this GPIO device keeps all its important stuff.

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🎀 NAME 🎀

struct dio48e_gpio — the GPIO device private data structure, no cap. This is where the driver stashes its state so it doesn't have to carry everything around in its pockets. 🫶

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🌸 SYNOPSIS 🌸

Here's the whole vibe, character for character, don't touch a single semicolon:

struct dio48e_gpio {
    raw_spinlock_t lock;
    struct regmap *map;
    void __iomem *regs;
    unsigned long flags;
    unsigned int irq_mask;
 };

Yes diva, that's the whole struct, and every single member matters — let's go member by member ✨

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🦋 Members 🦋

• lock — a raw_spinlock_t, and it's the synchronization lock to prevent I/O race conditions. Basically a bouncer at the door of the club so two threads don't barge in and trip over each other. Iconic behaviour. 🔥
• map — a struct regmap *, and it's the Regmap for the device. The glow-up registry for all the device's registers, iykyk.
• regs — a void __iomem *, described as the virtual mapping for device registers. This is the actual pointer into memory-mapped register land — where the hardware's realness lives. 👑
• flags — an unsigned long, holding the IRQ flags saved during locking. Very "keep the receipts" of this struct — it remembers what the interrupt flags were so nothing gets lost. 🧚
• irq_mask — an unsigned int, and it's the current IRQ mask state on the device. Literally tracking which interrupts are masked right now, fr fr. 🙈

Lowkey important: these are all members of one struct, so if you're poking at them, you're poking at this device's private data. Nothing here is optional in the description, bestie — it's all part of the package. 💖

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/gpio/gpio-104-dio-48e.c — go read the source, it's the main character. ⭐

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Okay that's the whole page! Sending you off with a cute little sign-off: this precious page came from the source path ./drivers/gpio, dated October 2026, and yes — that's the struct dio48e_gpio(9) manual page, wrapped up with a bow 🎀💜 Slay, go forth and read your registers responsibly. 🦋✨