1 files changed, 53 insertions, 0 deletions
diff --git a/include/ec/gpio.h b/include/ec/gpio.h
new file mode 100644
index 0000000..82a9343
--- /dev/null
+++ b/include/ec/gpio.h
@@ -0,0 +1,53 @@
+/* Copyright 2013-2014 Google Corp.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * 	http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ * implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * @file gpio.h
+ *
+ * @brief Public interface of the EC GPIO device driver
+ *
+ */
+
+#ifndef __EC_GPIO_H_
+#define __EC_GPIO_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define EC_GPIO_INPUT  0
+#define EC_GPIO_OUTPUT 1
+#define EC_GPIO_PULLUP_DISABLE 0
+#define EC_GPIO_PULLUP_ENABLE  1
+
+// Sets up a GPIO as output or input.
+// Returns: <0 on error
+int ec_gpio_setup(EcGpioPort port, uint8_t pin,
+                  int is_output, int pullup_enable);
+
+// Reads the current value of an input GPIO.
+// Returns: GPIO value (0,1) or <0 on error.
+int ec_gpio_read(EcGpioPort port, uint8_t pin);
+
+// Sets the driving value of an output GPIO.  Port should already be set
+// to output mode.
+// Returns: <0 on error
+int ec_gpio_set(EcGpioPort port, uint8_t pin, int val);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  // __EC_GPIO_H_