STRUCT FF_RAMP_EFFECT(9)

💖 NAME 💖

okay so this is struct ff_ramp_effect(9) from the Kernel API Manual, and it literally defines the parameters of a ramp force-feedback effect ✨ no cap.

🌈 SYNOPSIS 🌈

       struct ff_ramp_effect {
           __s16 start_level;
           __s16 end_level;
           struct ff_envelope envelope;
        };

🎀 Members 🎀

• start_level — the beginning strength of the effect, and bestie yes it may be negative 🙈.
• end_level — the final strength of the effect, also may be negative, periodt 💅.
• envelope — the envelope data, that’s it, that’s the whole vibe 🎀.

🌸 SEE ALSO 🌸

Kernel file ./include/uapi/linux/input.h is the mothership for all this, and you should also peek at:

• struct input_absinfo(9)
• struct input_keymap_entry(9)
• EVIOCGMTSLOTS(9)
• EVIOCGMASK(9)
• EVIOCSMASK(9)
• struct ff_replay(9)
• struct ff_trigger(9)
• struct ff_envelope(9)
• struct ff_constant_effect(9)
• struct ff_condition_effect(9)
• struct ff_periodic_effect(9)
• struct ff_rumble_effect(9)
• struct ff_haptic_effect(9)
• struct ff_effect(9)

source/version: ./include/uapi/linux; date: October 2026; page: struct ff_ramp_effect(9) — mwah, stay iconic 🫶💖✨