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-rw-r--r--include/asm-arm/arch-pxa/dma.h26
1 files changed, 14 insertions, 12 deletions
diff --git a/include/asm-arm/arch-pxa/dma.h b/include/asm-arm/arch-pxa/dma.h
index 3e88a2a02a0f..a008150abc59 100644
--- a/include/asm-arm/arch-pxa/dma.h
+++ b/include/asm-arm/arch-pxa/dma.h
@@ -24,27 +24,29 @@ typedef struct pxa_dma_desc {
volatile u32 dcmd; /* DCMD value for the current transfer */
} pxa_dma_desc;
+typedef enum {
+ DMA_PRIO_HIGH = 0,
+ DMA_PRIO_MEDIUM = 1,
+ DMA_PRIO_LOW = 2
+} pxa_dma_prio;
+
#if defined(CONFIG_PXA27x)
#define PXA_DMA_CHANNELS 32
-#define PXA_DMA_NBCH(prio) ((prio == DMA_PRIO_LOW) ? 16 : 8)
-typedef enum {
- DMA_PRIO_HIGH = 0,
- DMA_PRIO_MEDIUM = 8,
- DMA_PRIO_LOW = 16
-} pxa_dma_prio;
+#define pxa_for_each_dma_prio(ch, prio) \
+for ( \
+ ch = prio * 4; \
+ ch != (4 << prio) + 16; \
+ ch = (ch + 1 == (4 << prio)) ? (prio * 4 + 16) : (ch + 1) \
+)
#elif defined(CONFIG_PXA25x)
#define PXA_DMA_CHANNELS 16
-#define PXA_DMA_NBCH(prio) ((prio == DMA_PRIO_LOW) ? 8 : 4)
-typedef enum {
- DMA_PRIO_HIGH = 0,
- DMA_PRIO_MEDIUM = 4,
- DMA_PRIO_LOW = 8
-} pxa_dma_prio;
+#define pxa_for_each_dma_prio(ch, prio) \
+ for (ch = prio * 4; ch != (4 << prio); ch++)
#endif