Qualcomm APCS IPC driver

modulename: qcom-apcs-ipc-mailbox.ko

configname: CONFIG_QCOM_APCS_IPC

Linux Kernel Configuration
└─>Device Drivers
└─>Mailbox Hardware Support
└─>Qualcomm APCS IPC driver
In linux kernel since version 4.2 (release Date: 2015-08-30)  
Say y here to enable support for the APCS IPC mailbox driver,
providing an interface for invoking the inter-process communication
signals from the application processor to other masters.

source code:
depends
CONFIG_MAILBOX
CONFIG_ARCH_QCOM or CONFIG_COMPILE_TEST

is selected by
CONFIG_IPQ_APSS_6018