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authorRob Herring <rob.herring@calxeda.com>2012-03-04 22:03:33 -0600
committerRob Herring <rob.herring@calxeda.com>2012-03-06 21:34:43 -0600
commitc334bc150524f833db3c76a0aaf55fb5044444e1 (patch)
treea29acb80a05bdca36547b973229582481727ee24 /arch/arm
parent41e32c906054be3a600cdeb69eb70350066e0a91 (diff)
downloadop-kernel-dev-c334bc150524f833db3c76a0aaf55fb5044444e1.zip
op-kernel-dev-c334bc150524f833db3c76a0aaf55fb5044444e1.tar.gz
ARM: make mach/io.h include optional
Add a kconfig option NEED_MACH_IO_H to conditionally include mach/io.h. Basing this on CONFIG_PCI and CONFIG_ISA doesn't quite work. Most ISA platforms don't need mach/io.h, but ebsa110 does. Most PCI platforms need mach/io.h for now, but ks8695 doesn't which means i/o accesses are broken. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Cc: Russell King <linux@arm.linux.org.uk> Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> Acked-by: Nicolas Pitre <nico@linaro.org>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/Kconfig23
-rw-r--r--arch/arm/include/asm/io.h5
2 files changed, 28 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index f2574fe..31a2ddc 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -217,6 +217,13 @@ config ARM_PATCH_PHYS_VIRT
this feature (eg, building a kernel for a single machine) and
you need to shrink the kernel to the minimal size.
+config NEED_MACH_IO_H
+ bool
+ help
+ Select this when mach/io.h is required to provide special
+ definitions for this platform. The need for mach/io.h should
+ be avoided when possible.
+
config NEED_MACH_MEMORY_H
bool
help
@@ -268,6 +275,7 @@ config ARCH_INTEGRATOR
select GENERIC_CLOCKEVENTS
select PLAT_VERSATILE
select PLAT_VERSATILE_FPGA_IRQ
+ select NEED_MACH_IO_H
select NEED_MACH_MEMORY_H
help
Support for ARM's Integrator platform.
@@ -403,6 +411,7 @@ config ARCH_EBSA110
select ISA
select NO_IOPORT
select ARCH_USES_GETTIMEOFFSET
+ select NEED_MACH_IO_H
select NEED_MACH_MEMORY_H
help
This is an evaluation board for the StrongARM processor available
@@ -429,6 +438,7 @@ config ARCH_FOOTBRIDGE
select FOOTBRIDGE
select GENERIC_CLOCKEVENTS
select HAVE_IDE
+ select NEED_MACH_IO_H
select NEED_MACH_MEMORY_H
help
Support for systems based on the DC21285 companion chip
@@ -481,6 +491,7 @@ config ARCH_IOP13XX
select PCI
select ARCH_SUPPORTS_MSI
select VMSPLIT_1G
+ select NEED_MACH_IO_H
select NEED_MACH_MEMORY_H
select NEED_RET_TO_USER
help
@@ -490,6 +501,7 @@ config ARCH_IOP32X
bool "IOP32x-based"
depends on MMU
select CPU_XSCALE
+ select NEED_MACH_IO_H
select NEED_RET_TO_USER
select PLAT_IOP
select PCI
@@ -502,6 +514,7 @@ config ARCH_IOP33X
bool "IOP33x-based"
depends on MMU
select CPU_XSCALE
+ select NEED_MACH_IO_H
select NEED_RET_TO_USER
select PLAT_IOP
select PCI
@@ -515,6 +528,7 @@ config ARCH_IXP23XX
select CPU_XSC3
select PCI
select ARCH_USES_GETTIMEOFFSET
+ select NEED_MACH_IO_H
select NEED_MACH_MEMORY_H
help
Support for Intel's IXP23xx (XScale) family of processors.
@@ -525,6 +539,7 @@ config ARCH_IXP2000
select CPU_XSCALE
select PCI
select ARCH_USES_GETTIMEOFFSET
+ select NEED_MACH_IO_H
select NEED_MACH_MEMORY_H
help
Support for Intel's IXP2400/2800 (XScale) family of processors.
@@ -538,6 +553,7 @@ config ARCH_IXP4XX
select GENERIC_CLOCKEVENTS
select HAVE_SCHED_CLOCK
select MIGHT_HAVE_PCI
+ select NEED_MACH_IO_H
select DMABOUNCE if PCI
help
Support for Intel's IXP4XX (XScale) family of processors.
@@ -548,6 +564,7 @@ config ARCH_DOVE
select PCI
select ARCH_REQUIRE_GPIOLIB
select GENERIC_CLOCKEVENTS
+ select NEED_MACH_IO_H
select PLAT_ORION
help
Support for the Marvell Dove SoC 88AP510
@@ -558,6 +575,7 @@ config ARCH_KIRKWOOD
select PCI
select ARCH_REQUIRE_GPIOLIB
select GENERIC_CLOCKEVENTS
+ select NEED_MACH_IO_H
select PLAT_ORION
help
Support for the following Marvell Kirkwood series SoCs:
@@ -582,6 +600,7 @@ config ARCH_MV78XX0
select PCI
select ARCH_REQUIRE_GPIOLIB
select GENERIC_CLOCKEVENTS
+ select NEED_MACH_IO_H
select PLAT_ORION
help
Support for the following Marvell MV78xx0 series SoCs:
@@ -651,6 +670,7 @@ config ARCH_TEGRA
select HAVE_SCHED_CLOCK
select HAVE_SMP
select MIGHT_HAVE_CACHE_L2X0
+ select NEED_MACH_IO_H if PCI
select ARCH_HAS_CPUFREQ
help
This enables support for NVIDIA Tegra based systems (Tegra APX,
@@ -745,6 +765,7 @@ config ARCH_RPC
select ARCH_SPARSEMEM_ENABLE
select ARCH_USES_GETTIMEOFFSET
select HAVE_IDE
+ select NEED_MACH_IO_H
select NEED_MACH_MEMORY_H
help
On the Acorn Risc-PC, Linux can support the internal IDE disk and
@@ -777,6 +798,7 @@ config ARCH_S3C2410
select CLKDEV_LOOKUP
select ARCH_USES_GETTIMEOFFSET
select HAVE_S3C2410_I2C if I2C
+ select NEED_MACH_IO_H
help
Samsung S3C2410X CPU based systems, such as the Simtec Electronics
BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
@@ -883,6 +905,7 @@ config ARCH_SHARK
select PCI
select ARCH_USES_GETTIMEOFFSET
select NEED_MACH_MEMORY_H
+ select NEED_MACH_IO_H
help
Support for the StrongARM based Digital DNARD machine, also known
as "Shark" (<http://www.shark-linux.de/shark.html>).
diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h
index 6f7555d..233034e 100644
--- a/arch/arm/include/asm/io.h
+++ b/arch/arm/include/asm/io.h
@@ -114,7 +114,12 @@ static inline void __iomem *__typesafe_io(unsigned long addr)
/*
* Now, pick up the machine-defined IO definitions
*/
+#ifdef CONFIG_NEED_MACH_IO_H
#include <mach/io.h>
+#else
+#define __io(a) ({ (void)(a); __typesafe_io(0); })
+#define __mem_pci(a) (a)
+#endif
/*
* This is the limit of PC card/PCI/ISA IO space, which is by default
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