Use FIFO/DMA if available
configname: CONFIG_PARPORT_PC_FIFO
Linux Kernel Configuration
└─>Device Drivers
└─>Parallel port support
└─>Use FIFO/DMA if available
In linux kernel since version 2.6.20 (release Date: 2007-02-04)
Many parallel port chipsets provide hardware that can speed up
printing. Say Y here if you want to take advantage of that.
As well as actually having a FIFO, or DMA capability, the kernel
will need to know which IRQ the parallel port has. By default,
parallel port interrupts will not be used, and so neither will the
FIFO. See <file:Documentation/admin-guide/parport.rst> to find out how to
specify which IRQ/DMA to use.
printing. Say Y here if you want to take advantage of that.
As well as actually having a FIFO, or DMA capability, the kernel
will need to know which IRQ the parallel port has. By default,
parallel port interrupts will not be used, and so neither will the
FIFO. See <file:Documentation/admin-guide/parport.rst> to find out how to
specify which IRQ/DMA to use.