ppc: Add common APIs.

It'll be easier to add support for new PPCs if we make a generic API.

BUG=None
BRANCH=None
TEST=make -j buildall

Change-Id: I9aac1750eb4c163eb2b94aa8975c797f86d0a25a
Signed-off-by: Aseda Aboagye <aaboagye@google.com>
Reviewed-on: https://chromium-review.googlesource.com/791499
Commit-Ready: Aseda Aboagye <aaboagye@chromium.org>
Tested-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Shawn N <shawnn@chromium.org>

1 files changed, 40 insertions, 0 deletions

diff --git a/include/usbc_ppc.h b/include/usbc_ppc.h
new file mode 100644
index 0000000000..0af3e766e3
--- /dev/null
+++ b/include/usbc_ppc.h
@@ -0,0 +1,40 @@
+/* Copyright 2017 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.
+ */
+
+#ifndef __CROS_EC_USBC_PPC_H
+#define __CROS_EC_USBC_PPC_H
+
+#include "common.h"
+
+
+/* Common APIs for USB Type-C Power Path Controllers (PPC) */
+
+/**
+ * Is the port sourcing Vbus?
+ *
+ * @param port: The type c port.
+ * @return 1 if sourcing Vbus, 0 if not.
+ */
+int ppc_is_sourcing_vbus(int port);
+
+/**
+ * Allow current to flow into the system.
+ *
+ * @param port: The Type-C port's FET to open.
+ * @param enable: 1: Turn on the FET, 0: turn off the FET.
+ * @return EC_SUCCESS on success, error otherwise.
+ */
+int ppc_vbus_sink_enable(int port, int enable);
+
+/**
+ * Allow current out of the system.
+ *
+ * @param port: The Type-C port's FET to open.
+ * @param enable: 1: Turn on the FET, 0: turn off the FET.
+ * @return EC_SUCCESS on success, error otherwise.
+ */
+int ppc_vbus_source_enable(int port, int enable);
+
+#endif /* !defined(__CROS_EC_USBC_PPC_H) */