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authorMichael Buesch2008-07-25 01:46:11 -0700
committerLinus Torvalds2008-07-25 10:53:30 -0700
commit7444a72effa632fcd8edc566f880d96fe213c73b (patch)
tree89d3e70c22751a6b00091df2b4dce7202eb3b1f5 /arch
parentff1d5c2f0268f4e32103536e2e65480b5b7b6530 (diff)
gpiolib: allow user-selection
This patch adds functionality to the gpio-lib subsystem to make it possible to enable the gpio-lib code even if the architecture code didn't request to get it built in. The archtitecture code does still need to implement the gpiolib accessor functions in its asm/gpio.h file. This patch adds the implementations for x86 and PPC. With these changes it is possible to run generic GPIO expansion cards on every architecture that implements the trivial wrapper functions. Support for more architectures can easily be added. Signed-off-by: Michael Buesch <mb@bu3sch.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: David Brownell <david-b@pacbell.net> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jean Delvare <khali@linux-fr.org> Cc: Samuel Ortiz <sameo@openedhand.com> Cc: Kumar Gala <galak@gate.crashing.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/Kconfig8
-rw-r--r--arch/avr32/Kconfig2
-rw-r--r--arch/mips/Kconfig2
-rw-r--r--arch/powerpc/Kconfig1
-rw-r--r--arch/powerpc/platforms/52xx/Kconfig2
-rw-r--r--arch/powerpc/sysdev/qe_lib/Kconfig2
-rw-r--r--arch/x86/Kconfig1
7 files changed, 10 insertions, 8 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 6fb4f03369f2..dabb015aa40b 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -268,7 +268,7 @@ config ARCH_EP93XX
select GENERIC_GPIO
select HAVE_CLK
select HAVE_CLK
- select HAVE_GPIO_LIB
+ select ARCH_REQUIRE_GPIOLIB
help
This enables support for the Cirrus EP93xx series of CPUs.
@@ -447,7 +447,7 @@ config ARCH_PXA
select ARCH_MTD_XIP
select GENERIC_GPIO
select HAVE_CLK
- select HAVE_GPIO_LIB
+ select ARCH_REQUIRE_GPIOLIB
select GENERIC_TIME
select GENERIC_CLOCKEVENTS
select TICK_ONESHOT
@@ -479,7 +479,7 @@ config ARCH_SA1100
select GENERIC_CLOCKEVENTS
select HAVE_CLK
select TICK_ONESHOT
- select HAVE_GPIO_LIB
+ select ARCH_REQUIRE_GPIOLIB
help
Support for StrongARM 11x0 based boards.
@@ -522,7 +522,7 @@ config ARCH_OMAP
bool "TI OMAP"
select GENERIC_GPIO
select HAVE_CLK
- select HAVE_GPIO_LIB
+ select ARCH_REQUIRE_GPIOLIB
select GENERIC_TIME
select GENERIC_CLOCKEVENTS
help
diff --git a/arch/avr32/Kconfig b/arch/avr32/Kconfig
index df4adefedb42..7c239a916275 100644
--- a/arch/avr32/Kconfig
+++ b/arch/avr32/Kconfig
@@ -88,7 +88,7 @@ config PLATFORM_AT32AP
select SUBARCH_AVR32B
select MMU
select PERFORMANCE_COUNTERS
- select HAVE_GPIO_LIB
+ select ARCH_REQUIRE_GPIOLIB
select GENERIC_ALLOCATOR
#
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index b9c754f4070c..b4c4eaa5dd26 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -713,7 +713,7 @@ config CSRC_SB1250
config GPIO_TXX9
select GENERIC_GPIO
- select HAVE_GPIO_LIB
+ select ARCH_REQUIRE_GPIOLIB
bool
config CFE
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index de6b49cd6be8..fe88418167c5 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -110,6 +110,7 @@ config PPC
default y
select HAVE_DYNAMIC_FTRACE
select HAVE_FTRACE
+ select ARCH_WANT_OPTIONAL_GPIOLIB
select HAVE_IDE
select HAVE_IOREMAP_PROT
select HAVE_EFFICIENT_UNALIGNED_ACCESS
diff --git a/arch/powerpc/platforms/52xx/Kconfig b/arch/powerpc/platforms/52xx/Kconfig
index d664b1bce381..ccbd4958412e 100644
--- a/arch/powerpc/platforms/52xx/Kconfig
+++ b/arch/powerpc/platforms/52xx/Kconfig
@@ -48,6 +48,6 @@ config PPC_MPC5200_BUGFIX
config PPC_MPC5200_GPIO
bool "MPC5200 GPIO support"
depends on PPC_MPC52xx
- select HAVE_GPIO_LIB
+ select ARCH_REQUIRE_GPIOLIB
help
Enable gpiolib support for mpc5200 based boards
diff --git a/arch/powerpc/sysdev/qe_lib/Kconfig b/arch/powerpc/sysdev/qe_lib/Kconfig
index 4bb18f57901e..1ce546462be5 100644
--- a/arch/powerpc/sysdev/qe_lib/Kconfig
+++ b/arch/powerpc/sysdev/qe_lib/Kconfig
@@ -29,7 +29,7 @@ config QE_GPIO
bool "QE GPIO support"
depends on QUICC_ENGINE
select GENERIC_GPIO
- select HAVE_GPIO_LIB
+ select ARCH_REQUIRE_GPIOLIB
help
Say Y here if you're going to use hardware that connects to the
QE GPIOs.
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 66f3ab05b18c..e3cba0b45600 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -23,6 +23,7 @@ config X86
select HAVE_OPROFILE
select HAVE_IOREMAP_PROT
select HAVE_KPROBES
+ select ARCH_WANT_OPTIONAL_GPIOLIB if !X86_RDC321X
select HAVE_KRETPROBES
select HAVE_DYNAMIC_FTRACE
select HAVE_FTRACE