[ARM] 3487/1: IXP4xx: Support non-PCI systems

Patch from Deepak Saxena

This patch allows for the addition of IXP4xx systems that do not make
use of the PCI interface by moving the CONFIG_PCI symbol selection to
be platform-specific instead of for all of IXP4xx. If at least one machine
with PCI support is built, the PCI code will be compiled in, but when
building !PCI, this will drastically shrink the kernel size.

Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

3 files changed, 16 insertions, 4 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 1dbf6ddb300d..08b7cc900cae 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -150,8 +150,6 @@ config ARCH_IOP3XX
 
 config ARCH_IXP4XX
         bool "IXP4xx-based"
-        select DMABOUNCE
-        select PCI
         help
           Support for Intel's IXP4XX (XScale) family of processors.
 
diff --git a/arch/arm/mach-ixp4xx/Kconfig b/arch/arm/mach-ixp4xx/Kconfig
index 5bf50a2a737d..2a39f9e481ad 100644
--- a/arch/arm/mach-ixp4xx/Kconfig
+++ b/arch/arm/mach-ixp4xx/Kconfig
@@ -11,6 +11,7 @@ comment "IXP4xx Platforms"
 config MACH_NSLU2
         bool
         prompt "Linksys NSLU2"
+        select PCI
         help
           Say 'Y' here if you want your kernel to support Linksys's
           NSLU2 NAS device. For more information on this platform,
@@ -18,6 +19,7 @@ config MACH_NSLU2
 
 config ARCH_AVILA
         bool "Avila"
+        select PCI
         help
           Say 'Y' here if you want your kernel to support the Gateworks
           Avila Network Platform. For more information on this platform,
@@ -25,6 +27,7 @@ config ARCH_AVILA
 
 config ARCH_ADI_COYOTE
         bool "Coyote"
+        select PCI
         help
           Say 'Y' here if you want your kernel to support the ADI 
           Engineering Coyote Gateway Reference Platform. For more
@@ -32,6 +35,7 @@ config ARCH_ADI_COYOTE
 
 config ARCH_IXDP425
         bool "IXDP425"
+        select PCI
         help
           Say 'Y' here if you want your kernel to support Intel's 
           IXDP425 Development Platform (Also known as Richfield).  
@@ -39,6 +43,7 @@ config ARCH_IXDP425
 
 config MACH_IXDPG425
         bool "IXDPG425"
+        select PCI
         help
           Say 'Y' here if you want your kernel to support Intel's
           IXDPG425 Development Platform (Also known as Montajade).
@@ -46,6 +51,7 @@ config MACH_IXDPG425
 
 config MACH_IXDP465
         bool "IXDP465"
+        select PCI
         help
           Say 'Y' here if you want your kernel to support Intel's
           IXDP465 Development Platform (Also known as BMP).
@@ -72,6 +78,7 @@ config ARCH_PRPMC1100
 config MACH_NAS100D
         bool
         prompt "NAS100D"
+        select PCI
         help
           Say 'Y' here if you want your kernel to support Iomega's
           NAS 100d device. For more information on this platform,
@@ -96,6 +103,7 @@ config CPU_IXP46X
 config MACH_GTWX5715
         bool "Gemtek WX5715 (Linksys WRV54G)"
         depends on ARCH_IXP4XX
+        select PCI
         help
                 This board is currently inside the Linksys WRV54G Gateways.
 
@@ -110,11 +118,16 @@ config MACH_GTWX5715
                 "High Speed" UART is n/c (as far as I can tell)
                 20 Pin ARM/Xscale JTAG interface on J2
 
-
 comment "IXP4xx Options"
 
+config DMABOUNCE
+        bool
+        default y
+        depends on PCI
+
 config IXP4XX_INDIRECT_PCI
         bool "Use indirect PCI memory access"
+        depends on PCI
         help
           IXP4xx provides two methods of accessing PCI memory space:
 
diff --git a/arch/arm/mach-ixp4xx/Makefile b/arch/arm/mach-ixp4xx/Makefile
index 0471044fa179..5a4aaa0e0a09 100644
--- a/arch/arm/mach-ixp4xx/Makefile
+++ b/arch/arm/mach-ixp4xx/Makefile
@@ -2,8 +2,9 @@
 # Makefile for the linux kernel.
 #
 
-obj-y   += common.o common-pci.o 
+obj-y   += common.o
 
+obj-$(CONFIG_PCI)               += common-pci.o
 obj-$(CONFIG_ARCH_IXDP4XX)      += ixdp425-pci.o ixdp425-setup.o
 obj-$(CONFIG_MACH_IXDPG425)     += ixdpg425-pci.o coyote-setup.o
 obj-$(CONFIG_ARCH_ADI_COYOTE)   += coyote-pci.o coyote-setup.o