FF_CUSTOM
[FF_CUSTOM] = "FF_CUSTOM",
compat_effect->u.periodic.waveform == FF_CUSTOM)
if (effect->type != FF_PERIODIC || periodic->waveform != FF_CUSTOM) {
input_set_capability(vib->input, EV_FF, FF_CUSTOM);
input_set_capability(haptics->input_dev, EV_FF, FF_CUSTOM);
if (effect->u.periodic.waveform != FF_CUSTOM) {
effect->u.periodic.waveform == FF_CUSTOM)
#define FF_WAVEFORM_MAX FF_CUSTOM