Intel Quadrature Encoder Peripheral driver

modulename: intel-qep.ko

configname: CONFIG_INTEL_QEP

Linux Kernel Configuration
└─>Device Drivers
└─>Counter support
└─>PCI support
└─>Intel Quadrature Encoder Peripheral driver
In linux kernel since version 5.2 (release Date: 2019-07-07)  
Select this option to enable the Intel Quadrature Encoder Peripheral
driver.

To compile this driver as a module, choose M here: the module
will be called intel-qep.

source code: