gpio_generic_chip_set(9)

💅 gpio_generic_chip_set(9) — it's giving "Kernel API Manual" energy ✨

Okay so bestie, we're in the Kernel API Manual today and this one's a little function with big main-character energy. Buckle up 🎀

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🌸 NAME 🌸

gpio_generic_chip_set — sets the GPIO line value of the generic GPIO chip. That's it, that's the whole vibe 💖

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✨ SYNOPSIS ✨

int gpio_generic_chip_set (struct gpio_generic_chip *chip , unsigned int
offset , int value );

Look at her. Small, tidy, lowkey iconic 👑

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🦋 ARGUMENTS 🦋

• chip — the generic GPIO chip you're working with. Your girl, your chip 💜
• offset — the hardware offset of the line you wanna set. Important: it's the hardware one, not some other offset, okay? 😌
• value — the brand-new GPIO line value. Whatever you want her to be 🌈

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🔥 DESCRIPTION 🔥

So basically, some modules out here using the generic GPIO chip need to set line values inside their direction setters — but plot twist 😭 — they don't have access to the gpio-mmio symbols. So instead they go and use the function pointer in struct gpio_chip directly. Which is... not optimal, ngl. And apparently it can lead to crashes at run-time in some instances 💀💀

Enter our hero: this wrapper. It provides a safe interface for users 🫶

Not me reading "can lead to crashes at run-time" and immediately closing the direct function-pointer tab 🙈

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⭐ RETURN ⭐

• 0 on success 💚
• negative error number on failure 😭

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🧚 SEE ALSO 🧚

• Kernel file ./include/linux/gpio/generic.h struct
• gpio_generic_chip_config(9)
• struct gpio_generic_chip(9)
• gpio_generic_read_reg(9)
• gpio_generic_write_reg(9)

Go read them, fr fr, they're all part of the same little family 🍓

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And that's the whole page, bestie 🎀 from ./include/linux/gpio, dated October 2026, she's gpio_generic_chip_set(9) and she ate 💅✨ 🦋