KBL with DA7219 and MAX98357A in I2S Mode

modulename: snd-soc-kbl_da7219_max98357a.ko

configname: CONFIG_SND_SOC_INTEL_KBL_DA7219_MAX98357A_MACH

Linux Kernel Configuration
└─>Device Drivers
└─>Sound card support
└─>Advanced Linux Sound Architecture
└─>ALSA for SoC audio support
└─>Intel Machine drivers
└─>GPIO Support
└─>KBL with DA7219 and MAX98357A in I2S Mode
In linux kernel since version 3.10 (release Date: 2013-06-30)  
This adds support for ASoC Onboard Codec I2S machine driver. This will
create an alsa sound card for DA7219 + MAX98357A I2S audio codec.
Say Y if you have such a device.

source code:
sound/soc//intel/boards/