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authorMika Westerberg <mika.westerberg@linux.intel.com>2013-01-22 12:26:29 +0200
committerMark Brown <broonie@opensource.wolfsonmicro.com>2013-02-08 12:15:28 +0000
commit5928808ef623347e0d4aa22327b992e9e125b6ad (patch)
tree224237a53eaa3e75c093430f967d5f2bd255f1f4 /include/linux/spi
parentcd7bed00340475ee72a013a070e200e065085ef3 (diff)
spi/pxa2xx: add support for DMA engine
To be able to use DMA with this driver on non-PXA platforms we implement support for the generic DMA engine API. This lets user to use different DMA engines with little or no modification to the driver. Request lines and channel numbers can be passed to the driver from the platform specific data. The DMA engine implementation will be selected by default even on PXA platform. User can select the legacy DMA API by enabling Kconfig option CONFIG_SPI_PXA2XX_PXADMA. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Lu Cao <lucao@marvell.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'include/linux/spi')
-rw-r--r--include/linux/spi/pxa2xx_spi.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/spi/pxa2xx_spi.h b/include/linux/spi/pxa2xx_spi.h
index d6d2b4d557f8..e5cbbc4c57f7 100644
--- a/include/linux/spi/pxa2xx_spi.h
+++ b/include/linux/spi/pxa2xx_spi.h
@@ -29,6 +29,12 @@ struct pxa2xx_spi_master {
u16 num_chipselect;
u8 enable_dma;
+ /* DMA engine specific config */
+ int rx_chan_id;
+ int tx_chan_id;
+ int rx_slave_id;
+ int tx_slave_id;
+
/* For non-PXA arches */
struct ssp_device ssp;
};