HISC is the interface that connected the main Soc processor ( Also called Applciation Processor AP) to the modem ( 3G or 4G if there are two modems separately )

HSIC is uses the standard USB core library. And it is standard given by usb.org. The HSIC by itself consumes very less power and is one of the very power efficient and space efficient ways of interconnecting chips. Currently common to Qualcomm and Sammy Exynos architectures.

The reason seeing too many HSIC wake lock and other wake ups is due to the fact that the HSIC interface is waken up by modem (resulting modem scenarios are also so many) .

Also one important reason is EFS sync.
A concept : that the new modem architectures doesn't support a flash storage.(Saves lot of cost to manufacturer) .So every time modem needs to store something , it wakes up hisc interface and ask the AP (Main processor) to store it for him in his flash.

So this CP storing via AP is a fairy frequent activity even during suspend/deep sleep mode. Remember modem is periodically awake to do "Cell Update message" all the time.

I see the concern over this L2_hsic wake lock. I can say at this point that it is quite natural activity. and a necessary evil for smooth working of your modem( network 2g,3g,4g ) subsystem.

Every company including Sammy have some kind of power optimization done in the HSIC. So they taking care of this we considering fairy high battery drainer issue. .

If it is too high, modem/network can be blamed , if too many frequent network ( too many cell re-selection activity due to low RF reception) changes force the modem to do more activity, thus waking AP to do the work of storing its data over HSIC.

noticed the following reading on my bedroom wall socket:
current_now: 1698
current_avg: 700
current_max: 700

i tested with office socket 1 (cable from box):
current_now: 1698
current_avg: 1300
current_max: 1300

i tested with office socket 1 (cable from yoobao -- but mine is a very long one)
current_now: 1698
current_avg: 1800
current_max: 1800

i tested with office socket 2 (cable from box):
current_now: 1698
current_avg: 1200
current_max: 1200

i tested with office socket 1 (cable from box) - 10 minutes later:
current_now: 1698
current_avg: 1000
current_max: 1000

i do wonder how accurate is the reading.... coz i noticed reading can change when you turn off power on the socket and then turn it back on...

or does that mean i have problem with my charger?

700 for home wall socket... meaning my wall socket is lousy?