diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2013-01-10 10:52:56 +0200 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2013-01-12 05:07:21 -0800 |
| commit | 61cc13a51bcff737ce02d2047834171c0365b00d (patch) | |
| tree | fc7c2d9708d63f82259c6b6bc1df0650050d01c2 | |
| parent | 21fe3c5245647d200a7ba25d42b80d21c578a8dc (diff) | |
dmaengine: introduce is_slave_direction function
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>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| -rw-r--r-- | include/linux/dmaengine.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 4ca9cf73ad3..bfcdecb5d87 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) |