S3C24XX driver with FIQ pseudo-DMA
configname: CONFIG_SPI_S3C24XX_FIQ
Linux Kernel Configuration
└─>Device Drivers
└─>SPI support
└─>S3C24XX driver with FIQ pseudo-DMA
In linux kernel since version 2.6.33 (release Date: 2010-02-24)
Enable FIQ support for the S3C24XX SPI driver to provide pseudo
DMA by using the fast-interrupt request framework, This allows
the driver to get DMA-like performance when there are either
no free DMA channels, or when doing transfers that required both
TX and RX data paths.
DMA by using the fast-interrupt request framework, This allows
the driver to get DMA-like performance when there are either
no free DMA channels, or when doing transfers that required both
TX and RX data paths.