Lines Matching refs:DMA

8 - SSP PIO and SSP DMA data transfers.
41 The "pxa2xx_spi_master.enable_dma" field informs the driver that SSP DMA should
42 be used.  This caused the driver to acquire two DMA channels: rx_channel and
43 tx_channel.  The rx_channel has a higher DMA service priority the tx_channel.
44 See the "PXA2xx Developer Manual" section "DMA Controller".
67 	.enable_dma = 1, /* Enables NSSP DMA */
120 The "pxa2xx_spi_chip.dma_burst_size" field is used to configure PXA2xx DMA
122 the PXA2xx "Developer Manual" sections on the DMA controller and SSP Controllers
216 DMA and PIO I/O Support
218 The pxa2xx_spi driver supports both DMA and interrupt driven PIO message
219 transfers.  The driver defaults to PIO mode and DMA transfers must be enabled
220 by setting the "enable_dma" flag in the "pxa2xx_spi_master" structure.  The DMA
221 mode supports both coherent and stream based DMA mappings.
234 	use coherent DMA mode
237 	use streaming DMA mode