Loongson-1 Interrupt Controller

modulename: irq-ls1x.ko

configname: CONFIG_LS1X_IRQ

Linux Kernel Configuration
└─>Device Drivers
└─>IRQ chip support
└─>Loongson-1 Interrupt Controller
In linux kernel since version 5.1 (release Date: 2019-05-05)  
Support for the Loongson-1 platform Interrupt Controller.

source code:
selects
CONFIG_IRQ_DOMAIN
CONFIG_GENERIC_IRQ_CHIP