omap2_set_gpio_debounce(9)

🦋 omap2_set_gpio_debounce — low level gpio debounce time 🦋

okay so bestie, welcome to the omap2_set_gpio_debounce(9) page, straight out of the Kernel API Manual 💖 this one's a little low-level gem and honestly? kind of iconic. let's get into it ✨

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🌸 SYNOPSIS 🌸

int omap2_set_gpio_debounce (struct gpio_bank *bank , unsigned offset ,
       unsigned debounce );

like, three args, one int back, no cap 🫶

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🎀 ARGUMENTS 🎀

• bank — the gpio bank we're acting upon, aka the main character of this whole operation 👑
• offset — the gpio number on this bank, so you know exactly which lil guy we're talking about 🐣
• debounce — the debounce time to use, like the whole point of the function fr fr ⏱️

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💅 DESCRIPTION 💅

okay so here's the tea ☕ OMAP's debounce time is measured in 31us steps, and the formula goes like this:

<debounce time> = (GPIO_DEBOUNCINGTIME[7:0].DEBOUNCETIME + 1) x 31

so because the hardware thinks in those 31us chunks and you're out here thinking in actual time, we need to convert — and round up to the closest unit. highkey the rounding-up part matters, don't skip it 🙈✨

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🍓 RETURN 🍓

• 0 on success 🎉 slay
• negative error otherwise 😭 not slay

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/gpio/gpio-omap.c
• omap_clear_gpio_debounce(9) — the cleanup bestie, go check her out too 💜

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ngl this one's short and sweet, but every detail counts — the 31us steps, the [7:0] field, the + 1, the x 31, the rounding up, all of it. periodt 💅

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and that's the whole vibe bestie 🌈 this page lives in ./drivers/gpio, dated October 2026, and it's filed under omap2_set_gpio_debounce(9) in the Kernel API Manual — mwah, go debounce something 💖🎀🦋