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[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: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Richard 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: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Brownell 2007-03-05 00:30:18 -08:00 committed by Linus Torvalds
parent 1ad7c31107
commit 0a938b9768
3 changed files with 19 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
arch/arm/Kconfig
View File

@ -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).

4
arch/avr32/Kconfig
View File

@ -22,6 +22,10 @@ config AVR32
config UID16
bool
config GENERIC_GPIO
bool
default y
config GENERIC_HARDIRQS
bool
default y

10
drivers/input/keyboard/Kconfig
View File

@ -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.