diff options
Diffstat (limited to 'recipes/linux/linux-kexecboot-2.6.24/tosa/0021-Add-an-empty-drivers-gpio-directory-for-gpiolib-infr.patch')
| -rw-r--r-- | recipes/linux/linux-kexecboot-2.6.24/tosa/0021-Add-an-empty-drivers-gpio-directory-for-gpiolib-infr.patch | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/recipes/linux/linux-kexecboot-2.6.24/tosa/0021-Add-an-empty-drivers-gpio-directory-for-gpiolib-infr.patch b/recipes/linux/linux-kexecboot-2.6.24/tosa/0021-Add-an-empty-drivers-gpio-directory-for-gpiolib-infr.patch new file mode 100644 index 0000000000..3f8512128a --- /dev/null +++ b/recipes/linux/linux-kexecboot-2.6.24/tosa/0021-Add-an-empty-drivers-gpio-directory-for-gpiolib-infr.patch @@ -0,0 +1,121 @@ +From b77665c545bc260d2b93add129413e4a724d7e6e Mon Sep 17 00:00:00 2001 +From: David Brownell <dbrownell@users.sourceforge.net> +Date: Fri, 18 Jan 2008 00:35:00 +0300 +Subject: [PATCH 21/64] Add an empty drivers/gpio directory for gpiolib infrastructure and GPIO + expanders. It will be populated by later patches. + +This won't be the only place to hold such gpio_chip code. Many external chips +add a few GPIOs as secondary functionality (such as MFD drivers) and platform +code frequently needs to closely integrate GPIO and IRQ support. + +This is placed *early* in the build/link sequence since it's common for other +drivers to depend on GPIOs to do their work, so they must be initialized early +in the device_initcall() sequence. + +Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> +Acked-by: Jean Delvare <khali@linux-fr.org> +Cc: Eric Miao <eric.miao@marvell.com> +Cc: Sam Ravnborg <sam@ravnborg.org> +Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> +Cc: Philipp Zabel <philipp.zabel@gmail.com> +Cc: Russell King <rmk@arm.linux.org.uk> +Cc: Ben Gardner <bgardner@wabtec.com> +Signed-off-by: Andrew Morton <akpm@linux-foundation.org> +--- + arch/arm/Kconfig | 2 ++ + drivers/Kconfig | 2 ++ + drivers/Makefile | 1 + + drivers/gpio/Kconfig | 32 ++++++++++++++++++++++++++++++++ + drivers/gpio/Makefile | 3 +++ + 5 files changed, 40 insertions(+), 0 deletions(-) + create mode 100644 drivers/gpio/Kconfig + create mode 100644 drivers/gpio/Makefile + +diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig +index 10faf9c..06ca241 100644 +--- a/arch/arm/Kconfig ++++ b/arch/arm/Kconfig +@@ -1042,6 +1042,8 @@ source "drivers/i2c/Kconfig" + + source "drivers/spi/Kconfig" + ++source "drivers/gpio/Kconfig" ++ + source "drivers/w1/Kconfig" + + source "drivers/power/Kconfig" +diff --git a/drivers/Kconfig b/drivers/Kconfig +index f4076d9..90e295a 100644 +--- a/drivers/Kconfig ++++ b/drivers/Kconfig +@@ -52,6 +52,8 @@ source "drivers/i2c/Kconfig" + + source "drivers/spi/Kconfig" + ++source "drivers/gpio/Kconfig" ++ + source "drivers/w1/Kconfig" + + source "drivers/power/Kconfig" +diff --git a/drivers/Makefile b/drivers/Makefile +index 8cb37e3..8e5101f 100644 +--- a/drivers/Makefile ++++ b/drivers/Makefile +@@ -5,6 +5,7 @@ + # Rewritten to use lists instead of if-statements. + # + ++obj-$(CONFIG_HAVE_GPIO_LIB) += gpio/ + obj-$(CONFIG_PCI) += pci/ + obj-$(CONFIG_PARISC) += parisc/ + obj-$(CONFIG_RAPIDIO) += rapidio/ +diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig +new file mode 100644 +index 0000000..560687c +--- /dev/null ++++ b/drivers/gpio/Kconfig +@@ -0,0 +1,32 @@ ++# ++# GPIO infrastructure and expanders ++# ++ ++config HAVE_GPIO_LIB ++ bool ++ help ++ Platforms select gpiolib if they use this infrastructure ++ for all their GPIOs, usually starting with ones integrated ++ into SOC processors. ++ ++menu "GPIO Support" ++ depends on HAVE_GPIO_LIB ++ ++config DEBUG_GPIO ++ bool "Debug GPIO calls" ++ depends on DEBUG_KERNEL ++ help ++ Say Y here to add some extra checks and diagnostics to GPIO calls. ++ The checks help ensure that GPIOs have been properly initialized ++ before they are used and that sleeping calls aren not made from ++ nonsleeping contexts. They can make bitbanged serial protocols ++ slower. The diagnostics help catch the type of setup errors ++ that are most common when setting up new platforms or boards. ++ ++# put expanders in the right section, in alphabetical order ++ ++comment "I2C GPIO expanders:" ++ ++comment "SPI GPIO expanders:" ++ ++endmenu +diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile +new file mode 100644 +index 0000000..cdbba6b +--- /dev/null ++++ b/drivers/gpio/Makefile +@@ -0,0 +1,3 @@ ++# gpio support: dedicated expander chips, etc ++ ++ccflags-$(CONFIG_DEBUG_GPIO) += -DDEBUG +-- +1.5.3.8 + |