From 4e47d24a908c882b94c3f60cec56f02ac4e9bcea Mon Sep 17 00:00:00 2001 From: Radhey Shyam Pandey Date: Sat, 29 Sep 2018 11:17:59 -0600 Subject: [PATCH] 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 Reviewed-by: Appana Durga Kedareswara Rao Signed-off-by: Vinod Koul --- drivers/dma/xilinx/xilinx_dma.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c index 06d1632ff1a2..153ca584eba5 100644 --- a/drivers/dma/xilinx/xilinx_dma.c +++ b/drivers/dma/xilinx/xilinx_dma.c @@ -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 -- 2.17.1