uboot-phytec
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committed 83d290c56fa// SPDX-License-Identifier: GPL-2.0+/* * Copyright (C) 2012 Stefan Roese <sr@denx.de> *//* * Driver for SPEAr600 GPIO controller */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;}