Commit 61cc13a5 authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Vinod Koul

dmaengine: introduce is_slave_direction function

This function helps to distinguish the slave type of transfer by checking the
direction parameter.
Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent 21fe3c52
...@@ -621,6 +621,11 @@ static inline int dmaengine_slave_config(struct dma_chan *chan, ...@@ -621,6 +621,11 @@ static inline int dmaengine_slave_config(struct dma_chan *chan,
(unsigned long)config); (unsigned long)config);
} }
static inline bool is_slave_direction(enum dma_transfer_direction direction)
{
return (direction == DMA_MEM_TO_DEV) || (direction == DMA_DEV_TO_MEM);
}
static inline struct dma_async_tx_descriptor *dmaengine_prep_slave_single( static inline struct dma_async_tx_descriptor *dmaengine_prep_slave_single(
struct dma_chan *chan, dma_addr_t buf, size_t len, struct dma_chan *chan, dma_addr_t buf, size_t len,
enum dma_transfer_direction dir, unsigned long flags) enum dma_transfer_direction dir, unsigned long flags)
......
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