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Make the architecture gpio more readable 

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@8504 3c298f89-4303-0410-b956-a3cf2f4a3e73
master
Florian Fainelli 2007-08-27 10:36:29 +00:00
parent 1e35e6e87d
commit da5982b133
1 changed files with 11 additions and 4 deletions
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15
target/linux/rdc-2.6/files/arch/i386/mach-rdc/gpio.c
View File

@ -15,8 +15,12 @@
#include <linux/module.h>
#include <linux/delay.h>
#define RDC3210_CFGREG_ADDR 0x0CF8
#define RDC3210_CFGREG_DATA 0x0CFC
#include <asm/mach-rdc/rdc321x_defs.h>
static inline int rdc_gpio_is_valid(unsigned gpio)
{
return ((gpio > RDC_MAX_GPIO) ? 0 : 1);
}
static unsigned int rdc_gpio_read(unsigned gpio)
{
@ -47,7 +51,8 @@ static void rdc_gpio_write(unsigned int val)
int rdc_gpio_get_value(unsigned gpio)
{
return (gpio>0x3A?-EINVAL:(int)rdc_gpio_read(gpio));
if (rdc_gpio_is_valid(gpio))
return (int)rdc_gpio_read(gpio);
}
EXPORT_SYMBOL(rdc_gpio_get_value);
@ -55,7 +60,9 @@ void rdc_gpio_set_value(unsigned gpio, int value)
{
unsigned int val;
if (gpio > 0x3A) return;
if (!rdc_gpio_is_valid(gpio))
return;
val = rdc_gpio_read(gpio);
if (value)