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

mcu/riscv/drivers/gpio/Makefile

@@ -0,0 +1 @@
+SRCS-y += gpio.c

mcu/riscv/drivers/gpio/gpio.c

@@ -0,0 +1,26 @@
+/* #define REG_IORW_DEBUG */
+#include <io.h>
+#include <platform.h>
+
+unsigned long get_gpio_base(int group)
+{
+	return GPIO0_BASE + (group << 12);
+}
+
+
+void gpio_set_dir(int group, int bit, int dir)
+{
+	unsigned long base = get_gpio_base(group);
+	unsigned int v = readl(base + GPIO_DIR);
+	v &= ~(1 << bit);
+	v |= dir << bit;
+	writel(v, base + GPIO_DIR);
+}
+
+void gpio_set_data(int group, int bit, int data)
+{
+	unsigned long base = get_gpio_base(group);
+	unsigned long data_addr = (base + (1 << (bit + 2)));
+
+	writel(data << bit, data_addr);
+}