gpiochip_fwd_gpio_to_irq(9)

✨ gpiochip_fwd_gpio_to_irq(9) ✨

okay so real talk, this is a page straight out of the Kernel API Manual, bestie — gpiochip_fwd_gpio_to_irq(9), live from ./drivers/gpio, and we're about to make it make sense 💖

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🌸 NAME 🌸

gpiochip_fwd_gpio_to_irq — no cap, it returns the IRQ corresponding to a GPIO forwarder line 🎀

🦋 SYNOPSIS 🦋

int gpiochip_fwd_gpio_to_irq (struct gpiochip_fwd *fwd , unsigned int
offset );

like, that's the whole signature. short and iconic, honestly 👑

💅 ARGUMENTS 💅

• fwd — the GPIO forwarder itself. main character energy, this is the thing we're working with ✨
• offset — the offset of the line. yes, that offset, the one you want the IRQ for 🧚

🔥 RETURN 🔥

It gives you back the Linux IRQ corresponding to the passed line — slay 💜 — or an error code in case of error 😭 (fr fr, check it, don't just assume it worked).

ngl, "error code in case of error" is the most ominous sentence in kernel land but that's the deal 🙈 handle it.

🌈 SEE ALSO 🌈

The kernel file, bestie, right here:

• ./drivers/gpio/gpio-aggregator.c

and the whole friend group 🫶:

• gpiochip_fwd_get_gpiochip(9)
• gpiochip_fwd_get_data(9)
• gpiochip_fwd_gpio_request(9)
• gpiochip_fwd_gpio_get_direction(9)
• gpiochip_fwd_gpio_direction_output(9)
• gpiochip_fwd_gpio_direction_input(9)
• gpiochip_fwd_gpio_get(9)
• gpiochip_fwd_gpio_get_multiple(9)
• gpiochip_fwd_gpio_set(9)
• gpiochip_fwd_gpio_set_multiple(9)
• gpiochip_fwd_gpio_set_config(9)
• devm_gpiochip_fwd_alloc(9)
• gpiochip_fwd_desc_add(9)
• gpiochip_fwd_desc_free(9)
• gpiochip_fwd_register(9)
• gpiochip_fwd_create(9)

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and that's the vibe check ✅ this page lives in ./drivers/gpio, stamped October 2026, and it's titled gpiochip_fwd_gpio_to_irq(9) in the Kernel API Manual — go forth and slay your IRQs, bestie 💅💖✨