spi: davinci: let DMA operation be specified on per-device basis

Let DMA operation be specified on a per-device basis instead of selecting it once during probe. A side effect of this is the need to combine the PIO and DMA buffer txrx_bufs routine. This is good since they anyway share some common functionality. Signed-off-by: Brian Niebuhr <bniebuhr@efjohnson.com> Tested-By: Michael Williamson <michael.williamson@criticallink.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
git-mirror · Nov 18, 2010 · 87467bd · 87467bd
1 parent 6dbd29b
commit 87467bd
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diff --git a/arch/arm/mach-davinci/include/mach/spi.h b/arch/arm/mach-davinci/include/mach/spi.h
@@ -41,6 +41,7 @@ struct davinci_spi_config {
 	u8	parity_enable;
 #define SPI_IO_TYPE_INTR	0
 #define SPI_IO_TYPE_POLL	1
+#define SPI_IO_TYPE_DMA		2
 	u8	io_type;
 	u8	timer_disable;
 	u8	c2tdelay;