| /* arch/arm/mach-s3c2410/include/mach/gpio-fns.h |
| * |
| * Copyright (c) 2003-2009 Simtec Electronics |
| * Ben Dooks <ben@simtec.co.uk> |
| * |
| * S3C2410 - hardware |
| * |
| * 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. |
| */ |
| |
| #ifndef __MACH_GPIO_FNS_H |
| #define __MACH_GPIO_FNS_H __FILE__ |
| |
| /* These functions are in the to-be-removed category and it is strongly |
| * encouraged not to use these in new code. They will be marked deprecated |
| * very soon. |
| * |
| * Most of the functionality can be either replaced by the gpiocfg calls |
| * for the s3c platform or by the generic GPIOlib API. |
| * |
| * As of 2.6.35-rc, these will be removed, with the few drivers using them |
| * either replaced or given a wrapper until the calls can be removed. |
| */ |
| |
| #include <plat/gpio-cfg.h> |
| |
| static inline void s3c2410_gpio_cfgpin(unsigned int pin, unsigned int cfg) |
| { |
| /* 1:1 mapping between cfgpin and setcfg calls at the moment */ |
| s3c_gpio_cfgpin(pin, cfg); |
| } |
| |
| /* external functions for GPIO support |
| * |
| * These allow various different clients to access the same GPIO |
| * registers without conflicting. If your driver only owns the entire |
| * GPIO register, then it is safe to ioremap/__raw_{read|write} to it. |
| */ |
| |
| extern unsigned int s3c2410_gpio_getcfg(unsigned int pin); |
| |
| /* s3c2410_gpio_getirq |
| * |
| * turn the given pin number into the corresponding IRQ number |
| * |
| * returns: |
| * < 0 = no interrupt for this pin |
| * >=0 = interrupt number for the pin |
| */ |
| |
| extern int s3c2410_gpio_getirq(unsigned int pin); |
| |
| /* s3c2410_gpio_irqfilter |
| * |
| * set the irq filtering on the given pin |
| * |
| * on = 0 => disable filtering |
| * 1 => enable filtering |
| * |
| * config = S3C2410_EINTFLT_PCLK or S3C2410_EINTFLT_EXTCLK orred with |
| * width of filter (0 through 63) |
| * |
| * |
| */ |
| |
| extern int s3c2410_gpio_irqfilter(unsigned int pin, unsigned int on, |
| unsigned int config); |
| |
| /* s3c2410_gpio_pullup |
| * |
| * This call should be replaced with s3c_gpio_setpull(). |
| * |
| * As a note, there is currently no distinction between pull-up and pull-down |
| * in the s3c24xx series devices with only an on/off configuration. |
| */ |
| |
| /* s3c2410_gpio_pullup |
| * |
| * configure the pull-up control on the given pin |
| * |
| * to = 1 => disable the pull-up |
| * 0 => enable the pull-up |
| * |
| * eg; |
| * |
| * s3c2410_gpio_pullup(S3C2410_GPB(0), 0); |
| * s3c2410_gpio_pullup(S3C2410_GPE(8), 0); |
| */ |
| |
| extern void s3c2410_gpio_pullup(unsigned int pin, unsigned int to); |
| |
| extern void s3c2410_gpio_setpin(unsigned int pin, unsigned int to); |
| |
| extern unsigned int s3c2410_gpio_getpin(unsigned int pin); |
| |
| #endif /* __MACH_GPIO_FNS_H */ |
