Commit 4e47d24a authored Sep 29, 2018 by Radhey Shyam Pandey Committed by Vinod Koul Nov 11, 2018

dmaengine: xilinx_dma: Introduce helper macro for preparing dma address

This patch introduces the xilinx_prep_dma_addr_t macro which prepares
dma_addr_t from hardware buffer descriptor LSB and MSB fields. It will
be used in simple dma 64-bit programming sequence.

Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Reviewed-by: Appana Durga Kedareswara Rao <appana.durga.rao@xilinx.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>

parent 91b43828

drivers/dma/xilinx/xilinx_dma.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -190,6 +190,8 @@
		/* AXI CDMA Specific Masks */
		#define XILINX_CDMA_CR_SGMODE BIT(3)

		#define xilinx_prep_dma_addr_t(addr) \
		((dma_addr_t)((u64)addr##_##msb << 32 \| (addr)))
		/**
		* struct xilinx_vdma_desc_hw - Hardware Descriptor
		* @next_desc: Next Descriptor Pointer @0x00