dmaengine: shdma: add chcr_write/read function
CHCR register position is not same in all DMAC.
This patch adds new "chcr_offset" to decide it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/drivers/dma/shdma.h b/drivers/dma/shdma.h
index 6c73b65..6f064ca 100644
--- a/drivers/dma/shdma.h
+++ b/drivers/dma/shdma.h
@@ -47,6 +47,7 @@
struct list_head node;
u32 __iomem *chan_reg;
u16 __iomem *dmars;
+ unsigned int chcr_offset;
};
#define to_sh_chan(chan) container_of(chan, struct sh_dmae_chan, common)