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authorIngo Molnar <mingo@elte.hu>2009-06-17 13:06:17 +0200
committerIngo Molnar <mingo@elte.hu>2009-06-17 13:06:17 +0200
commita3d06cc6aa3e765dc2bf98626f87272dcf641dca (patch)
treeaa3e49b58f08d6c0ea55cdca4fb5e6c8ba6ae333 /arch/arm/plat-s3c64xx/include/plat/dma-plat.h
parent0990b1c65729012a63e0eeca93aaaafea4e9a064 (diff)
parent65795efbd380a832ae508b04dba8f8e53f0b84d9 (diff)
Merge branch 'linus' into perfcounters/core
Conflicts: arch/x86/include/asm/kmap_types.h include/linux/mm.h include/asm-generic/kmap_types.h Merge reason: We crossed changes with kmap_types.h cleanups in mainline. Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/arm/plat-s3c64xx/include/plat/dma-plat.h')
-rw-r--r--arch/arm/plat-s3c64xx/include/plat/dma-plat.h70
1 files changed, 70 insertions, 0 deletions
diff --git a/arch/arm/plat-s3c64xx/include/plat/dma-plat.h b/arch/arm/plat-s3c64xx/include/plat/dma-plat.h
new file mode 100644
index 00000000000..0c30dd98672
--- /dev/null
+++ b/arch/arm/plat-s3c64xx/include/plat/dma-plat.h
@@ -0,0 +1,70 @@
+/* linux/arch/arm/plat-s3c64xx/include/plat/dma-plat.h
+ *
+ * Copyright 2009 Openmoko, Inc.
+ * Copyright 2009 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ * http://armlinux.simtec.co.uk/
+ *
+ * S3C64XX DMA core
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#define DMACH_LOW_LEVEL (1<<28) /* use this to specifiy hardware ch no */
+
+struct s3c64xx_dma_buff;
+
+/** s3c64xx_dma_buff - S3C64XX DMA buffer descriptor
+ * @next: Pointer to next buffer in queue or ring.
+ * @pw: Client provided identifier
+ * @lli: Pointer to hardware descriptor this buffer is associated with.
+ * @lli_dma: Hardare address of the descriptor.
+ */
+struct s3c64xx_dma_buff {
+ struct s3c64xx_dma_buff *next;
+
+ void *pw;
+ struct pl080_lli *lli;
+ dma_addr_t lli_dma;
+};
+
+struct s3c64xx_dmac;
+
+struct s3c2410_dma_chan {
+ unsigned char number; /* number of this dma channel */
+ unsigned char in_use; /* channel allocated */
+ unsigned char bit; /* bit for enable/disable/etc */
+ unsigned char hw_width;
+ unsigned char peripheral;
+
+ unsigned int flags;
+ enum s3c2410_dmasrc source;
+
+
+ dma_addr_t dev_addr;
+
+ struct s3c2410_dma_client *client;
+ struct s3c64xx_dmac *dmac; /* pointer to controller */
+
+ void __iomem *regs;
+
+ /* cdriver callbacks */
+ s3c2410_dma_cbfn_t callback_fn; /* buffer done callback */
+ s3c2410_dma_opfn_t op_fn; /* channel op callback */
+
+ /* buffer list and information */
+ struct s3c64xx_dma_buff *curr; /* current dma buffer */
+ struct s3c64xx_dma_buff *next; /* next buffer to load */
+ struct s3c64xx_dma_buff *end; /* end of queue */
+
+ /* note, when channel is running in circular mode, curr is the
+ * first buffer enqueued, end is the last and curr is where the
+ * last buffer-done event is set-at. The buffers are not freed
+ * and the last buffer hardware descriptor points back to the
+ * first.
+ */
+};
+
+#include <plat/dma-core.h>