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GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

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lai
2026-09-06 03:52:57 +08:00
commit b1928b41c0
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source/bootloader/u-boot-2020.01/arch/mips/mach-jz47xx/jz4780/gpio.c
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// SPDX-License-Identifier: GPL-2.0+
#include <config.h>
#include <common.h>
#include <asm/io.h>
#include <mach/jz4780.h>
int jz47xx_gpio_get_value(unsigned int gpio)
{
void __iomem *gpio_regs = (void __iomem *)GPIO_BASE;
int port = gpio / 32;
int pin = gpio % 32;
return readl(gpio_regs + GPIO_PXPIN(port)) & BIT(pin);
}
void jz47xx_gpio_direction_input(unsigned int gpio)
{
void __iomem *gpio_regs = (void __iomem *)GPIO_BASE;
int port = gpio / 32;
int pin = gpio % 32;
writel(BIT(pin), gpio_regs + GPIO_PXINTC(port));
writel(BIT(pin), gpio_regs + GPIO_PXMASKS(port));
writel(BIT(pin), gpio_regs + GPIO_PXPAT1S(port));
}
void jz47xx_gpio_direction_output(unsigned int gpio, int value)
{
void __iomem *gpio_regs = (void __iomem *)GPIO_BASE;
int port = gpio / 32;
int pin = gpio % 32;
writel(BIT(pin), gpio_regs + GPIO_PXINTC(port));
writel(BIT(pin), gpio_regs + GPIO_PXMASKS(port));
writel(BIT(pin), gpio_regs + GPIO_PXPAT1C(port));
writel(BIT(pin), gpio_regs +
(value ? GPIO_PXPAT0S(port) : GPIO_PXPAT0C(port)));
}