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authorArnaud Patard <arnaud.patard@rtp-net.org>2008-07-09 00:07:48 +0200
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-07-10 00:31:42 +0200
commit63f385cd1f649b3f4f2d59fc609e051981215fd7 (patch)
treeb0c1d0bf186c701284ba63dda9514cec333037a5 /arch
parentLinux 2.6.26-rc8 (diff)
downloadlinux-63f385cd1f649b3f4f2d59fc609e051981215fd7.tar.xz
linux-63f385cd1f649b3f4f2d59fc609e051981215fd7.zip
[ARM] 5160/1: IOP3XX: gpio/gpiolib support
This patch brings support for gpio/gpiolib framework to Intel IOP3xx platforms. Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org> Acked-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/Kconfig4
-rw-r--r--arch/arm/plat-iop/gpio.c43
2 files changed, 47 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index b786e68914d4..63ef7cf852a7 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -299,6 +299,8 @@ config ARCH_IOP32X
depends on MMU
select PLAT_IOP
select PCI
+ select GENERIC_GPIO
+ select HAVE_GPIO_LIB
help
Support for Intel's 80219 and IOP32X (XScale) family of
processors.
@@ -308,6 +310,8 @@ config ARCH_IOP33X
depends on MMU
select PLAT_IOP
select PCI
+ select GENERIC_GPIO
+ select HAVE_GPIO_LIB
help
Support for Intel's IOP33X (XScale) family of processors.
diff --git a/arch/arm/plat-iop/gpio.c b/arch/arm/plat-iop/gpio.c
index eda436083417..640e498c12ef 100644
--- a/arch/arm/plat-iop/gpio.c
+++ b/arch/arm/plat-iop/gpio.c
@@ -11,6 +11,10 @@
*/
#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/gpio.h>
#include <asm/hardware/iop3xx.h>
void gpio_line_config(int line, int direction)
@@ -46,3 +50,42 @@ void gpio_line_set(int line, int value)
local_irq_restore(flags);
}
EXPORT_SYMBOL(gpio_line_set);
+
+static int iop3xx_gpio_direction_input(struct gpio_chip *chip, unsigned gpio)
+{
+ gpio_line_config(gpio, GPIO_IN);
+ return 0;
+}
+
+static int iop3xx_gpio_direction_output(struct gpio_chip *chip, unsigned gpio, int level)
+{
+ gpio_line_set(gpio, level);
+ gpio_line_config(gpio, GPIO_OUT);
+ return 0;
+}
+
+static int iop3xx_gpio_get_value(struct gpio_chip *chip, unsigned gpio)
+{
+ return gpio_line_get(gpio);
+}
+
+static void iop3xx_gpio_set_value(struct gpio_chip *chip, unsigned gpio, int value)
+{
+ gpio_line_set(gpio, value);
+}
+
+static struct gpio_chip iop3xx_chip = {
+ .label = "iop3xx",
+ .direction_input = iop3xx_gpio_direction_input,
+ .get = iop3xx_gpio_get_value,
+ .direction_output = iop3xx_gpio_direction_output,
+ .set = iop3xx_gpio_set_value,
+ .base = 0,
+ .ngpio = IOP3XX_N_GPIOS,
+};
+
+static int __init iop3xx_gpio_setup(void)
+{
+ return gpiochip_add(&iop3xx_chip);
+}
+arch_initcall(iop3xx_gpio_setup);