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 000000000000..d51120744148
--- /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 eedf3ca65ba2..be862e7de784 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