[Sound-open-firmware] [PATCH 1/8] core: dma: Add DMA copy API.

[Keyon Jie]

From: Liam Girdwood <liam.r.girdwood at linux.intel.com>

This API allows clients to manually inform the DMAC when they need more
data copied. The DMAC can then copy the desired amount of data.

Signed-off-by: Liam Girdwood <liam.r.girdwood at linux.intel.com>
---
 src/include/reef/dma.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/include/reef/dma.h b/src/include/reef/dma.h
index 77f8f71..80ff8d4 100644
--- a/src/include/reef/dma.h
+++ b/src/include/reef/dma.h
@@ -94,6 +94,7 @@ struct dma_ops {
 
 	int (*start)(struct dma *dma, int channel);
 	int (*stop)(struct dma *dma, int channel);
+	int (*copy)(struct dma *dma, int channel, int bytes);
 	int (*pause)(struct dma *dma, int channel);
 	int (*release)(struct dma *dma, int channel);
 	int (*status)(struct dma *dma, int channel,
@@ -183,6 +184,11 @@ static inline int dma_stop(struct dma *dma, int channel)
 	return dma->ops->stop(dma, channel);
 }
 
+static inline int dma_copy(struct dma *dma, int channel, int bytes)
+{
+	return dma->ops->copy(dma, channel, bytes);
+}
+
 static inline int dma_pause(struct dma *dma, int channel)
 {
 	return dma->ops->pause(dma, channel);
-- 
2.11.0