1 files changed, 66 insertions, 0 deletions
diff --git a/src/soc/rockchip/common/gpio.c b/src/soc/rockchip/common/gpio.c
new file mode 100644
index 0000000000..6f30229817
--- /dev/null
+++ b/src/soc/rockchip/common/gpio.c
@@ -0,0 +1,66 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2014 Rockchip Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <arch/io.h>
+#include <console/console.h>
+#include <gpio.h>
+#include <soc/gpio.h>
+#include <soc/grf.h>
+#include <soc/soc.h>
+#include <stdlib.h>
+
+enum {
+	PULLNONE = 0,
+	PULLUP,
+	PULLDOWN
+};
+
+static void __gpio_input(gpio_t gpio, u32 pull)
+{
+	clrbits_le32(&gpio_port[gpio.port]->swporta_ddr, 1 << gpio.num);
+	if (is_pmu_gpio(gpio))
+		clrsetbits_le32(gpio_grf_reg(gpio), 3 << (gpio.idx * 2),
+				pull << (gpio.idx * 2));
+	else
+		write32(gpio_grf_reg(gpio), RK_CLRSETBITS(3 << (gpio.idx * 2),
+			pull << (gpio.idx * 2)));
+}
+
+void gpio_input(gpio_t gpio)
+{
+	__gpio_input(gpio, PULLNONE);
+}
+
+void gpio_input_pulldown(gpio_t gpio)
+{
+	__gpio_input(gpio, PULLDOWN);
+}
+
+void gpio_input_pullup(gpio_t gpio)
+{
+	__gpio_input(gpio, PULLUP);
+}
+
+int gpio_get(gpio_t gpio)
+{
+	return (read32(&gpio_port[gpio.port]->ext_porta) >> gpio.num) & 0x1;
+}
+
+void gpio_output(gpio_t gpio, int value)
+{
+	setbits_le32(&gpio_port[gpio.port]->swporta_ddr, 1 << gpio.num);
+	clrsetbits_le32(&gpio_port[gpio.port]->swporta_dr, 1 << gpio.num,
+							   !!value << gpio.num);
+}