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Diffstat (limited to 'drivers/dma/idma64.h')
-rw-r--r--drivers/dma/idma64.h14
1 files changed, 5 insertions, 9 deletions
diff --git a/drivers/dma/idma64.h b/drivers/dma/idma64.h
index a4d99685a7c4..f6aeff0af8a5 100644
--- a/drivers/dma/idma64.h
+++ b/drivers/dma/idma64.h
@@ -16,6 +16,8 @@
#include <linux/spinlock.h>
#include <linux/types.h>
+#include <asm-generic/io-64-nonatomic-lo-hi.h>
+
#include "virt-dma.h"
/* Channel registers */
@@ -166,19 +168,13 @@ static inline void idma64c_writel(struct idma64_chan *idma64c, int offset,
static inline u64 idma64c_readq(struct idma64_chan *idma64c, int offset)
{
- u64 l, h;
-
- l = idma64c_readl(idma64c, offset);
- h = idma64c_readl(idma64c, offset + 4);
-
- return l | (h << 32);
+ return lo_hi_readq(idma64c->regs + offset);
}
static inline void idma64c_writeq(struct idma64_chan *idma64c, int offset,
u64 value)
{
- idma64c_writel(idma64c, offset, value);
- idma64c_writel(idma64c, offset + 4, value >> 32);
+ lo_hi_writeq(value, idma64c->regs + offset);
}
#define channel_readq(idma64c, reg) \
@@ -217,7 +213,7 @@ static inline void idma64_writel(struct idma64 *idma64, int offset, u32 value)
idma64_writel(idma64, IDMA64_##reg, (value))
/**
- * struct idma64_chip - representation of DesignWare DMA controller hardware
+ * struct idma64_chip - representation of iDMA 64-bit controller hardware
* @dev: struct device of the DMA controller
* @irq: irq line
* @regs: memory mapped I/O space