diff options
Diffstat (limited to 'include/asm-arm/arch-s3c2410/gpio.h')
| -rw-r--r-- | include/asm-arm/arch-s3c2410/gpio.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/include/asm-arm/arch-s3c2410/gpio.h b/include/asm-arm/arch-s3c2410/gpio.h new file mode 100644 index 00000000000..b2bc7bfea63 --- /dev/null +++ b/include/asm-arm/arch-s3c2410/gpio.h @@ -0,0 +1,63 @@ +/* linux/include/asm-arm/arch-s3c2410/gpio.h + * + * Copyright (c) 2008 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * S3C2410 - GPIO lib support + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#define gpio_get_value __gpio_get_value +#define gpio_set_value __gpio_set_value +#define gpio_cansleep __gpio_cansleep + +#ifndef __ASM_ARCH_S3C2410_GPIO_H +#define __ASM_ARCH_S3C2410_GPIO_H + +#include <asm/irq.h> +#include <asm/hardware.h> +#include <asm/arch/regs-gpio.h> + +static inline int gpio_request(unsigned gpio, const char *label) +{ + return 0; +} + +static inline void gpio_free(unsigned gpio) +{ + return; +} + +static inline int gpio_direction_input(unsigned gpio) +{ + s3c2410_gpio_cfgpin(gpio, S3C2410_GPIO_INPUT); + return 0; +} + +static inline int gpio_direction_output(unsigned gpio, int value) +{ + s3c2410_gpio_cfgpin(gpio, S3C2410_GPIO_OUTPUT); + /* REVISIT can we write the value first, to avoid glitching? */ + s3c2410_gpio_setpin(gpio, value); + return 0; +} + +#define gpio_get_value(gpio) s3c2410_gpio_getpin(gpio) +#define gpio_set_value(gpio,value) s3c2410_gpio_setpin(gpio, value) + +#include <asm-generic/gpio.h> /* cansleep wrappers */ + +#ifdef CONFIG_CPU_S3C2400 +#define gpio_to_irq(gpio) s3c2400_gpio_getirq(gpio) +#else +#define gpio_to_irq(gpio) s3c2410_gpio_getirq(gpio) +#define irq_to_gpio(irq) s3c2410_irq_to_gpio(irq) +#endif + +/* FIXME implement irq_to_gpio() */ + +#include <asm-generic/gpio.h> |