1 files changed, 29 insertions, 0 deletions
diff --git a/include/i2c.h b/include/i2c.h
new file mode 100644
index 0000000000..34076b1f34
--- /dev/null
+++ b/include/i2c.h
@@ -0,0 +1,29 @@
+/* Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/* I2C interface for Chrome EC */
+
+#ifndef __CROS_EC_I2C_H
+#define __CROS_EC_I2C_H
+
+#include "common.h"
+
+/* Flags for slave address field, in addition to the 8-bit address */
+#define I2C_FLAG_BIG_ENDIAN 0x100  /* 16 byte values are MSB-first */
+
+/* Initializes the module. */
+int i2c_init(void);
+
+/* Reads a 16-bit register from the slave at 8-bit slave address
+ * <slaveaddr>, at the specified 8-bit <offset> in the slave's address
+ * space. */
+int i2c_read16(int port, int slave_addr, int offset, int* data);
+
+/* Writes a 16-bit register to the slave at 8-bit slave address
+ * <slaveaddr>, at the specified 8-bit <offset> in the slave's address
+ * space. */
+int i2c_write16(int port, int slave_addr, int offset, int data);
+
+#endif  /* __CROS_EC_I2C_H */