default or selected kernelversion does not have config value CONFIG_MCS_FIR.
Result is shown for kernelversion 6.7-rc3
MosChip MCS7780 IrDA-USB dongle
modulename: mcs7780.ko
configname: CONFIG_MCS_FIR
Linux Kernel Configuration
└─>Device Drivers
└─>Staging drivers
└─>IrDA (infrared) subsystem support
└─>Infrared-port device drivers
└─>MosChip MCS7780 IrDA-USB dongle
In linux kernel since version 2.6.18 (release Date: 2006-09-19)
Say Y or M here if you want to build support for the MosChip
MCS7780 IrDA-USB bridge device driver.
USB bridge based on the MosChip MCS7780 don't conform to the
IrDA-USB device class specification, and therefore need their
own specific driver. Those dongles support SIR and FIR (4Mbps)
speeds.
To compile it as a module, choose M here: the module will be called
mcs7780.
MCS7780 IrDA-USB bridge device driver.
USB bridge based on the MosChip MCS7780 don't conform to the
IrDA-USB device class specification, and therefore need their
own specific driver. Those dongles support SIR and FIR (4Mbps)
speeds.
To compile it as a module, choose M here: the module will be called
mcs7780.