mirror of
git://projects.qi-hardware.com/f32xbase.git
synced 2024-11-24 00:18:27 +02:00
3c9abdc65a
- f32x/Makefile (OBJS_om): rename gpio.o to gpio-s3c24xx.o - f32x/gpio-s3c24xx.h, f32x/gpio-s3c24xx.c, f32x/c2-om.c: renamed gpio.* to gpio-s3c24xx.* to
75 lines
1.3 KiB
C
75 lines
1.3 KiB
C
/*
|
|
* f32x/gpio-s3c24xx.h - Really primitive S3C244x GPIO access. Ports B-H only.
|
|
*
|
|
* Written 2008 by Werner Almesberger
|
|
* Copyright 2008 Werner Almesberger
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*/
|
|
|
|
/*
|
|
* Ports are numbered 0 = A, 1 = B, ...
|
|
*/
|
|
|
|
|
|
#ifndef GPIO_S3C24XX_H
|
|
#define GPIO_S3C24XX_H
|
|
|
|
|
|
#include <stdint.h>
|
|
|
|
|
|
volatile uint32_t *mem;
|
|
|
|
|
|
#define port_dat(port) mem[port*4+1]
|
|
#define port_con(port) mem[port*4]
|
|
|
|
|
|
static inline void gpio_high(unsigned port, unsigned bit)
|
|
{
|
|
port_dat(port) |= 1 << bit;
|
|
}
|
|
|
|
|
|
static inline void gpio_low(unsigned port, unsigned bit)
|
|
{
|
|
port_dat(port) &= ~(1 << bit);
|
|
}
|
|
|
|
|
|
static inline void gpio_set(unsigned port, unsigned bit, int value)
|
|
{
|
|
if (value)
|
|
gpio_high(port, bit);
|
|
else
|
|
gpio_low(port, bit);
|
|
}
|
|
|
|
|
|
static inline int gpio_get(unsigned port, unsigned bit)
|
|
{
|
|
return (port_dat(port) >> bit) & 1;
|
|
}
|
|
|
|
|
|
static inline void gpio_output(unsigned port, unsigned bit)
|
|
{
|
|
port_con(port) = (port_con(port) & ~(3 << bit*2)) | (1 << bit*2);
|
|
}
|
|
|
|
|
|
static inline void gpio_input(unsigned port, unsigned bit)
|
|
{
|
|
port_con(port) &= ~(3 << bit*2);
|
|
}
|
|
|
|
|
|
void gpio_init(void);
|
|
|
|
|
|
#endif /* !GPIO_S3C24XX_H */
|