Blackfin: bfin_dma.h: start a header for DMA MMR layout

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

2 files changed, 92 insertions, 34 deletions

diff --git a/arch/blackfin/include/asm/bfin_dma.h b/arch/blackfin/include/asm/bfin_dma.h
new file mode 100644
index 00000000000..d5112074414
--- /dev/null
+++ b/arch/blackfin/include/asm/bfin_dma.h
@@ -0,0 +1,91 @@
+/*
+ * bfin_dma.h - Blackfin DMA defines/structures/etc...
+ *
+ * Copyright 2004-2010 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __ASM_BFIN_DMA_H__
+#define __ASM_BFIN_DMA_H__
+
+#include <linux/types.h>
+
+/* DMA_CONFIG Masks */
+#define DMAEN			0x0001	/* DMA Channel Enable */
+#define WNR				0x0002	/* Channel Direction (W/R*) */
+#define WDSIZE_8		0x0000	/* Transfer Word Size = 8 */
+#define WDSIZE_16		0x0004	/* Transfer Word Size = 16 */
+#define WDSIZE_32		0x0008	/* Transfer Word Size = 32 */
+#define DMA2D			0x0010	/* DMA Mode (2D/1D*) */
+#define RESTART			0x0020	/* DMA Buffer Clear */
+#define DI_SEL			0x0040	/* Data Interrupt Timing Select */
+#define DI_EN			0x0080	/* Data Interrupt Enable */
+#define NDSIZE_0		0x0000	/* Next Descriptor Size = 0 (Stop/Autobuffer) */
+#define NDSIZE_1		0x0100	/* Next Descriptor Size = 1 */
+#define NDSIZE_2		0x0200	/* Next Descriptor Size = 2 */
+#define NDSIZE_3		0x0300	/* Next Descriptor Size = 3 */
+#define NDSIZE_4		0x0400	/* Next Descriptor Size = 4 */
+#define NDSIZE_5		0x0500	/* Next Descriptor Size = 5 */
+#define NDSIZE_6		0x0600	/* Next Descriptor Size = 6 */
+#define NDSIZE_7		0x0700	/* Next Descriptor Size = 7 */
+#define NDSIZE_8		0x0800	/* Next Descriptor Size = 8 */
+#define NDSIZE_9		0x0900	/* Next Descriptor Size = 9 */
+#define NDSIZE			0x0f00	/* Next Descriptor Size */
+#define DMAFLOW			0x7000	/* Flow Control */
+#define DMAFLOW_STOP	0x0000	/* Stop Mode */
+#define DMAFLOW_AUTO	0x1000	/* Autobuffer Mode */
+#define DMAFLOW_ARRAY	0x4000	/* Descriptor Array Mode */
+#define DMAFLOW_SMALL	0x6000	/* Small Model Descriptor List Mode */
+#define DMAFLOW_LARGE	0x7000	/* Large Model Descriptor List Mode */
+
+/* DMA_IRQ_STATUS Masks */
+#define DMA_DONE		0x0001	/* DMA Completion Interrupt Status */
+#define DMA_ERR			0x0002	/* DMA Error Interrupt Status */
+#define DFETCH			0x0004	/* DMA Descriptor Fetch Indicator */
+#define DMA_RUN			0x0008	/* DMA Channel Running Indicator */
+
+/*
+ * All Blackfin system MMRs are padded to 32bits even if the register
+ * itself is only 16bits.  So use a helper macro to streamline this.
+ */
+#define __BFP(m) u16 m; u16 __pad_##m
+
+/*
+ * bfin dma registers layout
+ */
+struct bfin_dma_regs {
+	u32 next_desc_ptr;
+	u32 start_addr;
+	__BFP(config);
+	u32 __pad0;
+	__BFP(x_count);
+	__BFP(x_modify);
+	__BFP(y_count);
+	__BFP(y_modify);
+	u32 curr_desc_ptr;
+	u32 curr_addr;
+	__BFP(irq_status);
+	__BFP(peripheral_map);
+	__BFP(curr_x_count);
+	u32 __pad1;
+	__BFP(curr_y_count);
+	u32 __pad2;
+};
+
+/*
+ * bfin handshake mdma registers layout
+ */
+struct bfin_hmdma_regs {
+	__BFP(control);
+	__BFP(ecinit);
+	__BFP(bcinit);
+	__BFP(ecurgent);
+	__BFP(ecoverflow);
+	__BFP(ecount);
+	__BFP(bcount);
+};
+
+#undef __BFP
+
+#endif
diff --git a/arch/blackfin/include/asm/dma.h b/arch/blackfin/include/asm/dma.h
index eedf3ca65ba..be862e7de78 100644
--- a/arch/blackfin/include/asm/dma.h
+++ b/arch/blackfin/include/asm/dma.h
@@ -14,40 +14,7 @@
 #include <asm/blackfin.h>
 #include <asm/page.h>
 #include <asm-generic/dma.h>
-
-/* DMA_CONFIG Masks */
-#define DMAEN			0x0001	/* DMA Channel Enable */
-#define WNR				0x0002	/* Channel Direction (W/R*) */
-#define WDSIZE_8		0x0000	/* Transfer Word Size = 8 */
-#define WDSIZE_16		0x0004	/* Transfer Word Size = 16 */
-#define WDSIZE_32		0x0008	/* Transfer Word Size = 32 */
-#define DMA2D			0x0010	/* DMA Mode (2D/1D*) */
-#define RESTART			0x0020	/* DMA Buffer Clear */
-#define DI_SEL			0x0040	/* Data Interrupt Timing Select */
-#define DI_EN			0x0080	/* Data Interrupt Enable */
-#define NDSIZE_0		0x0000	/* Next Descriptor Size = 0 (Stop/Autobuffer) */
-#define NDSIZE_1		0x0100	/* Next Descriptor Size = 1 */
-#define NDSIZE_2		0x0200	/* Next Descriptor Size = 2 */
-#define NDSIZE_3		0x0300	/* Next Descriptor Size = 3 */
-#define NDSIZE_4		0x0400	/* Next Descriptor Size = 4 */
-#define NDSIZE_5		0x0500	/* Next Descriptor Size = 5 */
-#define NDSIZE_6		0x0600	/* Next Descriptor Size = 6 */
-#define NDSIZE_7		0x0700	/* Next Descriptor Size = 7 */
-#define NDSIZE_8		0x0800	/* Next Descriptor Size = 8 */
-#define NDSIZE_9		0x0900	/* Next Descriptor Size = 9 */
-#define NDSIZE			0x0f00	/* Next Descriptor Size */
-#define DMAFLOW			0x7000	/* Flow Control */
-#define DMAFLOW_STOP	0x0000	/* Stop Mode */
-#define DMAFLOW_AUTO	0x1000	/* Autobuffer Mode */
-#define DMAFLOW_ARRAY	0x4000	/* Descriptor Array Mode */
-#define DMAFLOW_SMALL	0x6000	/* Small Model Descriptor List Mode */
-#define DMAFLOW_LARGE	0x7000	/* Large Model Descriptor List Mode */
-
-/* DMA_IRQ_STATUS Masks */
-#define DMA_DONE		0x0001	/* DMA Completion Interrupt Status */
-#define DMA_ERR			0x0002	/* DMA Error Interrupt Status */
-#define DFETCH			0x0004	/* DMA Descriptor Fetch Indicator */
-#define DMA_RUN			0x0008	/* DMA Channel Running Indicator */
+#include <asm/bfin_dma.h>
 
 /*-------------------------
  * config reg bits value