User configurable right->left swipe (dim) power
User configurable left->right swipe (brighten) power
sysfs paths:
/sys/module/sweep2wake/parameters/s2d_enabled
/sys/module/sweep2wake/parameters/up_kcal
/sys/module/sweep2wake/parameters/down_kcal

User must disable s2w/s2s while using. Great for insta-privacy :D