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| author | Peter Ujfalusi <peter.ujfalusi@ti.com> | 2012-09-14 14:05:47 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-09-22 17:12:45 +0200 |
| commit | ec8b5e48c03790a68cb875fe5064007a9cbdfdd0 (patch) | |
| tree | 18c572345b2c54d3d50f234e0e913d9f227363ba /drivers/dma/ep93xx_dma.c | |
| parent | dmaengine: omap: Add support for pause/resume in cyclic dma mode (diff) | |
| download | linux-ec8b5e48c03790a68cb875fe5064007a9cbdfdd0.tar.xz linux-ec8b5e48c03790a68cb875fe5064007a9cbdfdd0.zip | |
dmaengine: Pass flags via device_prep_dma_cyclic() callback
Change the parameter list of device_prep_dma_cyclic() so the DMA drivers
can receive the flags coming from clients.
This feature can be used during audio operation to disable all audio
related interrupts when the DMA_PREP_INTERRUPT is cleared from the flags.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Vinod Koul <vinod.koul@linux.intel.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/dma/ep93xx_dma.c')
| -rw-r--r-- | drivers/dma/ep93xx_dma.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/dma/ep93xx_dma.c b/drivers/dma/ep93xx_dma.c index c64917ec313d..493735b9b2c9 100644 --- a/drivers/dma/ep93xx_dma.c +++ b/drivers/dma/ep93xx_dma.c @@ -1120,6 +1120,7 @@ fail: * @buf_len: length of the buffer (in bytes) * @period_len: lenght of a single period * @dir: direction of the operation + * @flags: tx descriptor status flags * @context: operation context (ignored) * * Prepares a descriptor for cyclic DMA operation. This means that once the @@ -1133,7 +1134,8 @@ fail: static struct dma_async_tx_descriptor * ep93xx_dma_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t dma_addr, size_t buf_len, size_t period_len, - enum dma_transfer_direction dir, void *context) + enum dma_transfer_direction dir, unsigned long flags, + void *context) { struct ep93xx_dma_chan *edmac = to_ep93xx_dma_chan(chan); struct ep93xx_dma_desc *desc, *first; |