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-rw-r--r--include/linux/sh_dma.h24
1 files changed, 13 insertions, 11 deletions
diff --git a/include/linux/sh_dma.h b/include/linux/sh_dma.h
index b7b43b82231..56b97eed28a 100644
--- a/include/linux/sh_dma.h
+++ b/include/linux/sh_dma.h
@@ -95,19 +95,21 @@ struct sh_dmae_pdata {
};
/* DMAOR definitions */
-#define DMAOR_AE 0x00000004
+#define DMAOR_AE 0x00000004 /* Address Error Flag */
#define DMAOR_NMIF 0x00000002
-#define DMAOR_DME 0x00000001
+#define DMAOR_DME 0x00000001 /* DMA Master Enable */
/* Definitions for the SuperH DMAC */
-#define DM_INC 0x00004000
-#define DM_DEC 0x00008000
-#define DM_FIX 0x0000c000
-#define SM_INC 0x00001000
-#define SM_DEC 0x00002000
-#define SM_FIX 0x00003000
-#define CHCR_DE 0x00000001
-#define CHCR_TE 0x00000002
-#define CHCR_IE 0x00000004
+#define DM_INC 0x00004000 /* Destination addresses are incremented */
+#define DM_DEC 0x00008000 /* Destination addresses are decremented */
+#define DM_FIX 0x0000c000 /* Destination address is fixed */
+#define SM_INC 0x00001000 /* Source addresses are incremented */
+#define SM_DEC 0x00002000 /* Source addresses are decremented */
+#define SM_FIX 0x00003000 /* Source address is fixed */
+#define RS_AUTO 0x00000400 /* Auto Request */
+#define RS_ERS 0x00000800 /* DMA extended resource selector */
+#define CHCR_DE 0x00000001 /* DMA Enable */
+#define CHCR_TE 0x00000002 /* Transfer End Flag */
+#define CHCR_IE 0x00000004 /* Interrupt Enable */
#endif