Add submodule dependency filesHEADmaster

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec

1 files changed, 89 insertions, 0 deletions

diff --git a/roms/u-boot/drivers/gpio/spear_gpio.c b/roms/u-boot/drivers/gpio/spear_gpio.c
new file mode 100644
index 000000000..4e4cd1254
--- /dev/null
+++ b/roms/u-boot/drivers/gpio/spear_gpio.c
@@ -0,0 +1,89 @@
+// 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(&regs->gpiodir);
+
+	if (direction == GPIO_DIRECTION_OUT)
+		val |= 1 << gpio;
+	else
+		val &= ~(1 << gpio);
+
+	writel(val, &regs->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, &regs->gpiodata[DATA_REG_ADDR(gpio)]);
+	else
+		writel(0, &regs->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(&regs->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;
+}