| // SPDX-License-Identifier: GPL-2.0+ |
| |
| #include <config.h> |
| #include <asm/io.h> |
| #include <linux/bitops.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))); |
| } |