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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2008-11-29 11:40:28 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-11-29 18:42:40 +0000
commitdcea83adc666061864b82c96e059dffe7268b512 (patch)
tree4882086842f53bee3f6c655e6a3283effd3fbdff /arch/arm/include/asm
parentc72e005b099302b3c6bee8381396199b77b6dd4f (diff)
[ARM] Hide ISA DMA API when ISA_DMA_API is unset
When ISA_DMA_API is unset, we're not implementing the ISA DMA API, so there's no point in publishing the prototypes via asm/dma.h, nor including the machine dependent parts of that API. This allows us to remove a lot of mach/dma.h files which don't contain any useful code. Unfortunately though, some platforms put their own private non-ISA definitions into mach/dma.h, so we leave these behind and fix the appropriate #include statments. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include/asm')
-rw-r--r--arch/arm/include/asm/dma.h23
1 files changed, 16 insertions, 7 deletions
diff --git a/arch/arm/include/asm/dma.h b/arch/arm/include/asm/dma.h
index 6a4d44a5b45..06419980dde 100644
--- a/arch/arm/include/asm/dma.h
+++ b/arch/arm/include/asm/dma.h
@@ -1,13 +1,7 @@
#ifndef __ASM_ARM_DMA_H
#define __ASM_ARM_DMA_H
-typedef unsigned int dmach_t;
-
-#include <linux/spinlock.h>
#include <asm/memory.h>
-#include <asm/system.h>
-#include <asm/scatterlist.h>
-#include <mach/dma.h>
/*
* This is the maximum virtual address which can be DMA'd from.
@@ -16,6 +10,19 @@ typedef unsigned int dmach_t;
#define MAX_DMA_ADDRESS 0xffffffff
#endif
+#ifdef CONFIG_ISA_DMA_API
+/*
+ * This is used to support drivers written for the x86 ISA DMA API.
+ * It should not be re-used except for that purpose.
+ */
+#include <linux/spinlock.h>
+#include <asm/system.h>
+#include <asm/scatterlist.h>
+
+typedef unsigned int dmach_t;
+
+#include <mach/dma.h>
+
/*
* DMA modes
*/
@@ -141,4 +148,6 @@ extern int isa_dma_bridge_buggy;
#define isa_dma_bridge_buggy (0)
#endif
-#endif /* _ARM_DMA_H */
+#endif /* CONFIG_ISA_DMA_API */
+
+#endif /* __ASM_ARM_DMA_H */