QQ Royal Flush draw facing push (100nl)

The hand is probably pretty standard, but i figure ill post it anyway. Villain is running 54/7 with an af of .5 and a flop af of .3 over 150 hands. He seems really loose and is really passive.

Hold'em No Limit ($0.50/$1.00) - 2007-06-16 23:17:46
6-max Seat #3 is the button
Seat 1: Villain ($118.25)
Seat 2: Trichome ($205.00)
Seat 3: Hero ($133.00)
Seat 5: bntiger ($123.75)
Seat 6: madeleine2 ($94.00)
------------------------------
NEW HAND
bntiger: posts the small blind $0.50
madeleine2: posts the big blind $1.00
--- DEALING POCKETS
Hero is dealt [Qc,Qd]
Villain: calls $1.00
Trichome: folds
Hero: raises $5.00 to $6.00
bntiger: folds
madeleine2: folds
Villain: calls $5.00
--- DEALING FLOP [Jc,Kc,Tc]
Villain: checks
Hero: bets $10.00
Villain: goes all in $112.25
Hero: ???

He is so passive, what is he pushing here? Were slightly ahead against ak, behind against a flopped flush, ahead against the ace of clubs, although behind if it is ackx, and about even money against a set.

Is this always a call?

Is he a habitual limper then call the raise or a limp/ folder? I'm a little lost with what a 54/8 raises, surely that counts out all sets and AK? Which leaves any 2 pair, or the flopped flush. This would seem a strange line for Ac Xc with the king out. Would he call the flop with 8c 9c? umm poker stove please.

honestly, i dont remember too much, this hand was like two days ago, but preflop if i remember right, he played almost anything, it usually took an allin to get him to fold. I played almost 150 hands with him, at the time i think i had played less, and these stats are from what i have now. Then his vpip was probably higher, but otherwise his stats should have been about the same. my guess is his stats at the time of this hand were probably more like 72/8/.5, dont know how much of a difference that makes though.

however, he was up in money before this hand so he must not have been too horrible donking around. With him being soo passive, this is why his all in was confusing. maybe he was using the old "In no limit hold'em sometimes we vary our play" lol