ARM: make mach/gpio.h headers optional
Most platforms don't need mach/gpio.h and it prevents multi-platform
kernel images. Add CONFIG_NEED_MACH_GPIO_H and make platforns select it
if they need gpio.h. This is platforms that define __GPIOLIB_COMPLEX
or have lots of implicit includes pulled in by mach/gpio.h.
at91 and omap have gpio clean-up pending and can drop
CONFIG_NEED_MACH_GPIO_H once that is in.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Russell King <linux@arm.linux.org.uk>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index c5f9ae5..4f5652d 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -202,6 +202,13 @@
this feature (eg, building a kernel for a single machine) and
you need to shrink the kernel to the minimal size.
+config NEED_MACH_GPIO_H
+ bool
+ help
+ Select this when mach/gpio.h is required to provide special
+ definitions for this platform. The need for mach/gpio.h should
+ be avoided when possible.
+
config NEED_MACH_IO_H
bool
help
@@ -345,6 +352,7 @@
select HAVE_CLK
select CLKDEV_LOOKUP
select IRQ_DOMAIN
+ select NEED_MACH_GPIO_H
select NEED_MACH_IO_H if PCCARD
help
This enables support for systems based on Atmel
@@ -523,6 +531,7 @@
bool "IOP32x-based"
depends on MMU
select CPU_XSCALE
+ select NEED_MACH_GPIO_H
select NEED_MACH_IO_H
select NEED_RET_TO_USER
select PLAT_IOP
@@ -536,6 +545,7 @@
bool "IOP33x-based"
depends on MMU
select CPU_XSCALE
+ select NEED_MACH_GPIO_H
select NEED_MACH_IO_H
select NEED_RET_TO_USER
select PLAT_IOP
@@ -645,6 +655,7 @@
select PLAT_PXA
select SPARSE_IRQ
select GENERIC_ALLOCATOR
+ select NEED_MACH_GPIO_H
help
Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
@@ -733,6 +744,7 @@
select MULTI_IRQ_HANDLER
select ARM_CPU_SUSPEND if PM
select HAVE_IDE
+ select NEED_MACH_GPIO_H
help
Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
@@ -795,6 +807,7 @@
select CLKDEV_LOOKUP
select ARCH_REQUIRE_GPIOLIB
select HAVE_IDE
+ select NEED_MACH_GPIO_H
select NEED_MACH_MEMORY_H
select SPARSE_IRQ
help
@@ -810,6 +823,7 @@
select HAVE_S3C2410_I2C if I2C
select HAVE_S3C_RTC if RTC_CLASS
select HAVE_S3C2410_WATCHDOG if WATCHDOG
+ select NEED_MACH_GPIO_H
select NEED_MACH_IO_H
help
Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
@@ -837,6 +851,7 @@
select SAMSUNG_GPIOLIB_4BIT
select HAVE_S3C2410_I2C if I2C
select HAVE_S3C2410_WATCHDOG if WATCHDOG
+ select NEED_MACH_GPIO_H
help
Samsung S3C64XX series based systems
@@ -851,6 +866,7 @@
select GENERIC_CLOCKEVENTS
select HAVE_S3C2410_I2C if I2C
select HAVE_S3C_RTC if RTC_CLASS
+ select NEED_MACH_GPIO_H
help
Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
SMDK6450.
@@ -865,6 +881,7 @@
select HAVE_S3C2410_I2C if I2C
select HAVE_S3C_RTC if RTC_CLASS
select HAVE_S3C2410_WATCHDOG if WATCHDOG
+ select NEED_MACH_GPIO_H
help
Samsung S5PC100 series based systems
@@ -882,6 +899,7 @@
select HAVE_S3C2410_I2C if I2C
select HAVE_S3C_RTC if RTC_CLASS
select HAVE_S3C2410_WATCHDOG if WATCHDOG
+ select NEED_MACH_GPIO_H
select NEED_MACH_MEMORY_H
help
Samsung S5PV210/S5PC110 series based systems
@@ -899,6 +917,7 @@
select HAVE_S3C_RTC if RTC_CLASS
select HAVE_S3C2410_I2C if I2C
select HAVE_S3C2410_WATCHDOG if WATCHDOG
+ select NEED_MACH_GPIO_H
select NEED_MACH_MEMORY_H
help
Support for SAMSUNG's EXYNOS SoCs (EXYNOS4/5)
@@ -971,6 +990,7 @@
select GENERIC_ALLOCATOR
select GENERIC_IRQ_CHIP
select ARCH_HAS_HOLES_MEMORYMODEL
+ select NEED_MACH_GPIO_H
help
Support for TI's DaVinci platform.
@@ -983,6 +1003,7 @@
select CLKSRC_MMIO
select GENERIC_CLOCKEVENTS
select ARCH_HAS_HOLES_MEMORYMODEL
+ select NEED_MACH_GPIO_H
help
Support for TI's OMAP platform (OMAP1/2/3/4).