diff options
| author | Arnaud Patard <arnaud.patard@rtp-net.org> | 2008-07-08 23:07:48 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-07-09 23:31:42 +0100 |
| commit | 63f385cd1f649b3f4f2d59fc609e051981215fd7 (patch) | |
| tree | b0c1d0bf186c701284ba63dda9514cec333037a5 /arch | |
| parent | 543cf4cb3fe6f6cae3651ba918b9c56200b257d0 (diff) | |
| download | lwn-63f385cd1f649b3f4f2d59fc609e051981215fd7.tar.gz lwn-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/Kconfig | 4 | ||||
| -rw-r--r-- | arch/arm/plat-iop/gpio.c | 43 |
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); |