struct_ff_rumble_effect(9) suse man page | unix.com

STRUCT 
FF_RUMBLE_EFF(9) 					  Input Subsystem					   STRUCT FF_RUMBLE_EFF(9)

NAME
       struct_ff_rumble_effect - defines parameters of a periodic force-feedback effect

SYNOPSIS
       struct ff_rumble_effect {
	 __u16 strong_magnitude;
	 __u16 weak_magnitude;
       };

MEMBERS
       strong_magnitude
	   magnitude of the heavy motor

       weak_magnitude
	   magnitude of the light one

DESCRIPTION
       Some rumble pads have two motors of different weight. Strong_magnitude represents the magnitude of the vibration generated by the heavy
       one.

COPYRIGHT
Kernel Hackers Manual 2.6.					     July 2010						   STRUCT FF_RUMBLE_EFF(9)