Messages in this thread Patch in this message | | | From | Andy Shevchenko <> | Subject | [PATCHv2 01/11] dmaengine: introduce is_slave_direction function | Date | Thu, 10 Jan 2013 10:52:56 +0200 |
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This function helps to distinguish the slave type of transfer by checking the direction parameter.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> --- include/linux/dmaengine.h | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 4ca9cf7..bfcdecb 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -621,6 +621,11 @@ static inline int dmaengine_slave_config(struct dma_chan *chan, (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( struct dma_chan *chan, dma_addr_t buf, size_t len, enum dma_transfer_direction dir, unsigned long flags) -- 1.7.10.4
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