please help to patch the DSDT (Alienware M17X R4)

[z1326]

hi,everyone,I tried to get OS X 10.10 Yosemite DP5 working on my Alienware M17X R4.The basic specifications are as following:

 

CPU: Intel Core i7-3610QM (Ivy Bridge)
Integrated Graphics: Intel HD Graphics 4000
Dedicated/Discrete Graphics: AMD 7970M (shown as HD7xxx in system information)
Memory: 16GB (4GB x 4)
NIC: Atheros AR8151 PCI-E Gigabit Ethernet Controller
Wi-Fi Card: killer N1103 
Audio: Sound Blaster Recon3Di
SATA1: Crucial C400 SED 256G
SATA2:WD 750G 7200prm
SATA 0DD: DVD Driver

 

Now I only got the HD4000 and AR8151 working.I'd like to block the 7970M (make the "HD7xxx" disappear in the system infomation) by modifing the DSDT and SSDT.Also I think by the modification of DSDT I can also get the AppleIntelPowerManagement and the Ivy-Bridge featrues (such as frequency control) working.But I failed to complete it.

 

Please help to patch the DSDT.(I'm not a native English speaker so sorry for my poor English     DSDT&SSDT.zip)

 These are the DSDT and SSDT extracted from AIDA64.