mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-18 18:59:44 +00:00
336d4615f8
At present dm/device.h includes the linux-compatible features. This requires including linux/compat.h which in turn includes a lot of headers. One of these is malloc.h which we thus end up including in every file in U-Boot. Apart from the inefficiency of this, it is problematic for sandbox which needs to use the system malloc() in some files. Move the compatibility features into a separate header file. Signed-off-by: Simon Glass <sjg@chromium.org>
89 lines
1.5 KiB
C
89 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2012 Stefan Roese <sr@denx.de>
|
|
*/
|
|
|
|
/*
|
|
* Driver for SPEAr600 GPIO controller
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <malloc.h>
|
|
#include <asm/arch/hardware.h>
|
|
#include <asm/gpio.h>
|
|
#include <asm/io.h>
|
|
#include <errno.h>
|
|
|
|
static int gpio_direction(unsigned gpio,
|
|
enum gpio_direction direction)
|
|
{
|
|
struct gpio_regs *regs = (struct gpio_regs *)CONFIG_GPIO_BASE;
|
|
u32 val;
|
|
|
|
val = readl(®s->gpiodir);
|
|
|
|
if (direction == GPIO_DIRECTION_OUT)
|
|
val |= 1 << gpio;
|
|
else
|
|
val &= ~(1 << gpio);
|
|
|
|
writel(val, ®s->gpiodir);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int gpio_set_value(unsigned gpio, int value)
|
|
{
|
|
struct gpio_regs *regs = (struct gpio_regs *)CONFIG_GPIO_BASE;
|
|
|
|
if (value)
|
|
writel(1 << gpio, ®s->gpiodata[DATA_REG_ADDR(gpio)]);
|
|
else
|
|
writel(0, ®s->gpiodata[DATA_REG_ADDR(gpio)]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int gpio_get_value(unsigned gpio)
|
|
{
|
|
struct gpio_regs *regs = (struct gpio_regs *)CONFIG_GPIO_BASE;
|
|
u32 val;
|
|
|
|
val = readl(®s->gpiodata[DATA_REG_ADDR(gpio)]);
|
|
|
|
return !!val;
|
|
}
|
|
|
|
int gpio_request(unsigned gpio, const char *label)
|
|
{
|
|
if (gpio >= SPEAR_GPIO_COUNT)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int gpio_free(unsigned gpio)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void gpio_toggle_value(unsigned gpio)
|
|
{
|
|
gpio_set_value(gpio, !gpio_get_value(gpio));
|
|
}
|
|
|
|
int gpio_direction_input(unsigned gpio)
|
|
{
|
|
return gpio_direction(gpio, GPIO_DIRECTION_IN);
|
|
}
|
|
|
|
int gpio_direction_output(unsigned gpio, int value)
|
|
{
|
|
int ret = gpio_direction(gpio, GPIO_DIRECTION_OUT);
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
gpio_set_value(gpio, value);
|
|
return 0;
|
|
}
|