1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2012 Stefan Roese <sr@denx.de>
7 * Driver for SPEAr600 GPIO controller
11 #include <asm/arch/hardware.h>
16 static int gpio_direction(unsigned gpio,
17 enum gpio_direction direction)
19 struct gpio_regs *regs = (struct gpio_regs *)CONFIG_GPIO_BASE;
22 val = readl(®s->gpiodir);
24 if (direction == GPIO_DIRECTION_OUT)
29 writel(val, ®s->gpiodir);
34 int gpio_set_value(unsigned gpio, int value)
36 struct gpio_regs *regs = (struct gpio_regs *)CONFIG_GPIO_BASE;
39 writel(1 << gpio, ®s->gpiodata[DATA_REG_ADDR(gpio)]);
41 writel(0, ®s->gpiodata[DATA_REG_ADDR(gpio)]);
46 int gpio_get_value(unsigned gpio)
48 struct gpio_regs *regs = (struct gpio_regs *)CONFIG_GPIO_BASE;
51 val = readl(®s->gpiodata[DATA_REG_ADDR(gpio)]);
56 int gpio_request(unsigned gpio, const char *label)
58 if (gpio >= SPEAR_GPIO_COUNT)
64 int gpio_free(unsigned gpio)
69 void gpio_toggle_value(unsigned gpio)
71 gpio_set_value(gpio, !gpio_get_value(gpio));
74 int gpio_direction_input(unsigned gpio)
76 return gpio_direction(gpio, GPIO_DIRECTION_IN);
79 int gpio_direction_output(unsigned gpio, int value)
81 int ret = gpio_direction(gpio, GPIO_DIRECTION_OUT);
86 gpio_set_value(gpio, value);