[Sound-open-firmware] [PATCH 2/8] core: dma: Add channel size to DMA platform data

[Keyon Jie]

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

Some DMACs have an array of register elements to config and control
DMA channels. Provide a mapping here so that FW can easily calculate
the correct channel offset.

Signed-off-by: Liam Girdwood <liam.r.girdwood at linux.intel.com>
---
 src/include/reef/dma.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/include/reef/dma.h b/src/include/reef/dma.h
index 80ff8d4..13af20c 100644
--- a/src/include/reef/dma.h
+++ b/src/include/reef/dma.h
@@ -119,6 +119,7 @@ struct dma_plat_data {
 	uint32_t base;
 	uint32_t channels;
 	uint32_t irq;
+	uint32_t chan_size;
 	void *drv_plat_data;
 };
 
@@ -145,6 +146,10 @@ struct dma *dma_get(int dmac_id);
 	dma->plat_data.base
 #define dma_irq(dma) \
 	dma->plat_data.irq
+#define dma_chan_size(dma) \
+	dma->plat_data.chan_size
+#define dma_chan_base(dma, chan) \
+	(dma->plat_data.base + chan * dma->plat_data.chan_size)
 
 /* DMA API
  * Programming flow is :-
-- 
2.11.0