input_ff_create(9)

✨ input_ff_create(9) ✨

okay so bestie, you're in the Kernel API Manual and this one is input_ff_create — the origin story of every rumble, every controller shake, every "why is my gamepad vibrating rn" moment 💖 lowkey iconic.

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💅 NAME 💅

input_ff_create — create force-feedback device 🎮✨

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🦋 SYNOPSIS 🦋

int input_ff_create (struct input_dev *dev , unsigned int max_effects );

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🌸 ARGUMENTS 🌸

• dev — the input device that's gonna support force-feedback, your main character fr 🫶
• max_effects — the absolute maximum number of effects the device can handle, no cap ✨

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🎀 DESCRIPTION 🎀

So basically this function allocates all the necessary memory for the force feedback portion of an input device, and then it installs all the default handlers. It's giving "setting up the whole vibe" 💅

⚠️ heads up bestie: dev->ffbit should already be set up before you call this function. Don't come in unprepared, this is not a last-minute thing 😭

And once the ff device is created? You're not done. You still need to set up its upload, erase, playback and other handlers before registering the input device. It's a whole process, but you got this 🌈👑

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🔥 SEE ALSO 🔥

Kernel file ./drivers/input/ff-core.c plus these besties:

• input_ff_upload(9)
• input_ff_erase(9)
• input_ff_event(9)
• input_ff_destroy(9)

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🧚 lowkey obsessed with how this all lives in ./drivers/input — that's the neighborhood, iykyk 💜

okay that's the whole tea 🍓 this page came to you from the Kernel API Manual, source version vibes living at ./drivers/input, dated October 2026 — slay, go forth and make things rumble 💀✨🫶