1 files changed, 63 insertions, 0 deletions
diff --git a/src/soc/nvidia/tegra/gpio.h b/src/soc/nvidia/tegra/gpio.h
new file mode 100644
index 0000000000..b62dc90906
--- /dev/null
+++ b/src/soc/nvidia/tegra/gpio.h
@@ -0,0 +1,63 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2013 Google 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef __SOC_NVIDIA_TEGRA_GPIO_H__
+#define __SOC_NVIDIA_TEGRA_GPIO_H__
+
+#include <stdint.h>
+
+/* Higher level functions for common GPIO configurations. */
+
+void gpio_input(int gpio_index, int pinmux_index);
+void gpio_input_pullup(int gpio_index, int pinmux_index);
+void gpio_input_pulldown(int gpio_index, int pinmux_index);
+void gpio_output(int gpio_index, int pinmux_index, int value);
+
+/* Functions to modify specific GPIO control values. */
+
+enum gpio_mode {
+	GPIO_MODE_SPIO = 0,
+	GPIO_MODE_GPIO = 1
+};
+void gpio_set_mode(int gpio_index, enum gpio_mode);
+int gpio_get_mode(int gpio_index);
+
+// Lock a GPIO with extreme caution since they can't be unlocked.
+void gpio_set_lock(int gpio_index);
+int gpio_get_lock(int gpio_index);
+
+void gpio_set_out_enable(int gpio_index, int enable);
+int gpio_get_out_enable(int gpio_index);
+
+void gpio_set_out_value(int gpio_index, int value);
+int gpio_get_out_value(int gpio_index);
+
+int gpio_get_in_value(int gpio_index);
+
+int gpio_get_int_status(int gpio_index);
+
+void gpio_set_int_enable(int gpio_index, int enable);
+int gpio_get_int_enable(int gpio_index);
+
+void gpio_set_int_level(int gpio_index, int high_rise, int edge, int delta);
+void gpio_get_int_level(int gpio_index, int *high_rise, int *edge, int *delta);
+
+void gpio_set_int_clear(int gpio_index);
+
+#endif	/* __SOC_NVIDIA_TEGRA_GPIO_H__ */