STRUCT IXP4XX_GPIO(9)

💖 struct ixp4xx_gpio(9) 💖

okay so bestie, welcome to the Kernel API Manual — today's main character is struct ixp4xx_gpio, no cap ✨

🌸 NAME 🌸

struct ixp4xx_gpio — the IXP4 GPIO state container. that's it, that's the vibe. it holds the state. it contains it. slay 💅

🦋 SYNOPSIS 🦋

struct ixp4xx_gpio {
    struct gpio_generic_chip chip;
    struct device *dev;
    void __iomem *base;
    unsigned long long irq_edge;
 };

literally just copy that into your brain, it's giving clean struct energy 🎀

🎀 Members 🎀

• chip — the generic GPIO chip for this instance 🫶 like, this one's the actual chip doing chip things for this particular instance, iykyk.
• dev — the containing device for this instance. it's the device that's holding this whole thing down, main character energy fr fr 👑
• base — the remapped I/O-memory base. yes bestie, remapped. I/O memory. base. 💜
• irq_edge — okay this one's cute: each bit represents an IRQ 🔥 where 1 means edge-triggered and 0 means level triggered. one bit per IRQ, no cap, that's the whole system 🧚

not me being obsessed with a bitfield-adjacent situation 😭 each bit = one IRQ, and the value tells you which trigger type it's on. periodt.

⭐ SEE ALSO ⭐

• Kernel file ./drivers/gpio/gpio-ixp4xx.c — go read it, it's iconic 🌈

and that's the whole page bestie!! 💖 this one came from ./drivers/gpio, dated October 2026, and the manual header on it is struct ixp4xx_gpio(9) — mwah, bye 🍓💋