Intel SST (LPE) Driver

modulename: snd-intel-sst.ko

configname: CONFIG_SND_INTEL_SST

Linux Kernel Configuration
└─>Device Drivers
└─>Staging drivers
└─>Intel SST (LPE) Driver
In linux kernel since version 2.6.37 (release Date: 2011-01-04)  
Say Y here to include support for the Intel(R) MID SST DSP driver
On other PC platforms if you are unsure answer 'N'

source code:
drivers/staging/intel_sst/