* Problems with DMA in the pxa2xx_spi driver
@ 2007-05-07 20:35 Johnnie Peters
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From: Johnnie Peters @ 2007-05-07 20:35 UTC (permalink / raw)
To: linux-kernel
Hi All,
I have written a SPI protocol driver to connect a data acquisition chip
to a character based interface to read and write the device. It works
well in PIO mode and I am trying to get it to work with DMA.
To enable the DMA I am setting enable_dma in the pxa2xx_psi_chip struct
and dma_burst_size to 16 in the pxa2xx_spi_chip structure under the
board master file arch/arm/mach-pxa/xxxx.c.
Other than that I have not really changed anything. I had assumed since
DMA code has been in the driver a while that DMA would just work. I
must be missing some setup data I need.
Any help would be appreciated,
Johnnie
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2007-05-07 20:35 Problems with DMA in the pxa2xx_spi driver Johnnie Peters
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