Commit 0a938b97 authored by David Brownell's avatar David Brownell Committed by Linus Torvalds
Browse files

[PATCH] add CONFIG_GENERIC_GPIO 



Most drivers using GPIOs already know they are running on a system that
supports the generic GPIO calls, because of other platform dependencies.
But the generic GPIO-based LED and input button drivers can't know that.

So this patch adds a Kconfig hook, GENERIC_GPIO, to mark the platforms
where <asm/gpio.h> will do the right thing.  Currently that's a bunch of
ARMs, and AVR32; more are on the way.

It also fixes a dependency bug for the gpio button input driver; it was
wrong to start with, now it covers all platforms with GENERIC_GPIO.

Signed-off-by: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
Acked-by: default avatarRichard Purdie <rpurdie@rpsys.net>
Cc: Arnaud Patard <arnaud.patard@rtp-net.org>
Cc: <raph@8d.com>
Cc: <msvoboda@ra.rockwell.com>
Cc: pHilipp Zabel <philipp.zabel@gmail.com>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Dmitry Torokhov <dtor@mail.ru>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 1ad7c311

arch/arm/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -21,6 +21,10 @@ config ARM 
config SYS_SUPPORTS_APM_EMULATION

	bool



config GENERIC_GPIO

	bool

	default n



config GENERIC_TIME

	bool

	default n
@@ -163,6 +167,7 @@ config ARCH_VERSATILE 


config ARCH_AT91

	bool "Atmel AT91"

	select GENERIC_GPIO

	help

	  This enables support for systems based on the Atmel AT91RM9200

	  and AT91SAM9xxx processors.
@@ -304,6 +309,7 @@ config ARCH_PXA 
	bool "PXA2xx-based"

	depends on MMU

	select ARCH_MTD_XIP

	select GENERIC_GPIO

	select GENERIC_TIME

	help

	  Support for Intel's PXA2XX processor line.
@@ -325,11 +331,13 @@ config ARCH_SA1100 
	select ISA

	select ARCH_DISCONTIGMEM_ENABLE

	select ARCH_MTD_XIP

	select GENERIC_GPIO

	help

	  Support for StrongARM 11x0 based boards.



config ARCH_S3C2410

	bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"

	select GENERIC_GPIO

	help

	  Samsung S3C2410X CPU based systems, such as the Simtec Electronics

	  BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
@@ -354,6 +362,7 @@ config ARCH_LH7A40X 


config ARCH_OMAP

	bool "TI OMAP"

	select GENERIC_GPIO

	help

	  Support for TI's OMAP platform (OMAP1 and OMAP2).

arch/avr32/Kconfig

+4 −0
Original line number Diff line number Diff line
@@ -22,6 +22,10 @@ config AVR32 
config UID16

	bool



config GENERIC_GPIO

	bool

	default y



config GENERIC_HARDIRQS

	bool

	default y

drivers/input/keyboard/Kconfig

+6 −4
Original line number Diff line number Diff line
@@ -215,14 +215,16 @@ config KEYBOARD_AAED2000 
	  module will be called aaed2000_kbd.



config KEYBOARD_GPIO

	tristate "Buttons on CPU GPIOs (PXA)"

	depends on (ARCH_SA1100 || ARCH_PXA || ARCH_S3C2410)

	tristate "GPIO Buttons"

	depends on GENERIC_GPIO

	help

	  This driver implements support for buttons connected

	  directly to GPIO pins of SA1100, PXA or S3C24xx CPUs.

	  to GPIO pins of various CPUs (and some other chips).



	  Say Y here if your device has buttons connected

	  directly to GPIO pins of the CPU.

	  directly to such GPIO pins.  Your board-specific

	  setup logic must also provide a platform device,

	  with configuration data saying which GPIOs are used.



	  To compile this driver as a module, choose M here: the

	  module will be called gpio-keys.

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