STRUCT GPIO_ARRAY(9)

💅 struct gpio_array — the Kernel API Manual tea, bestie

okay so real talk, this page is about struct gpio_array, and the man page literally calls it an opaque descriptor for a structure of GPIO array attributes. Which like... sounds scary but it's just a little container that holds a bunch of GPIO descriptors together, iykyk 🎀

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✨ SYNOPSIS ✨

struct gpio_array {
    struct gpio_desc        **desc;
    unsigned int            size;
    struct gpio_device      *gdev;
    unsigned long           *get_mask;
    unsigned long           *set_mask;
    unsigned long           invert_mask[];
 };

look at her, living her best struct life 🌸

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🫶 Members (aka the cast of characters)

• desc — an array of pointers to the GPIO descriptors, the whole girl gang 💖
• size — how many elements are actually chillin' in desc
• gdev — the parent GPIO device, the mom friend of the group
• get_mask — the get mask used in the fastpath ⚡
• set_mask — the set mask used in the fastpath ⚡
• invert_mask — the invert mask used in the fastpath ⚡ (this one's literally an array of unsigned long, no size given up front, she's mysterious 💅)

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👑 Description

so this structure gets attached to struct gpiod_descs that you got from gpiod_get_array, and then you can pass it right back into the get/set array functions so you can activate the fast processing path if it applies. like, if it's applicable. no cap. 🔥

basically: grab your array, hand it back, and if the fastpath fits, she goes zoom ✨

ngl the whole point is speed, but only "if applicable" — so don't go assuming it's always doing the fast thing 🙈

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🌈 SEE ALSO

• Kernel file ./drivers/gpio/gpiolib.h
• struct gpio_device(9)
• struct gpio_desc(9)

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that's the whole page bestie, slay 💜

signed, sealed, delivered — straight from ./drivers/gpio, dated October 2026, and she's the struct gpio_array(9) page herself. periodt. 🦋