1 files changed, 78 insertions, 0 deletions
diff --git a/src/usr/i2c/mux_i2c.C b/src/usr/i2c/mux_i2c.C
new file mode 100644
index 000000000..39447a14c
--- /dev/null
+++ b/src/usr/i2c/mux_i2c.C
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+/* IBM_PROLOG_BEGIN_TAG                                                   */
+/* This is an automatically generated prolog.                             */
+/*                                                                        */
+/* $Source: src/usr/i2c/mux_i2c.C $                                       */
+/*                                                                        */
+/* OpenPOWER HostBoot Project                                             */
+/*                                                                        */
+/* Contributors Listed Below - COPYRIGHT 2011,2018                        */
+/* [+] International Business Machines 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.                         */
+/*                                                                        */
+/* IBM_PROLOG_END_TAG                                                     */
+
+/**
+ * @file mux_i2c.C
+ *
+ * @brief I2C MUX utility functions
+ *
+ */
+
+// -----------------------------------------------------------------------------
+// Includes
+// -----------------------------------------------------------------------------
+#include "mux_i2c.H"
+
+// -----------------------------------------------------------------------------
+// Trace definitions
+// -----------------------------------------------------------------------------
+extern trace_desc_t* g_trac_i2c;
+
+namespace MUX_I2C
+{
+
+using namespace TARGETING;
+
+// Register the presence detect for the I2C MUX
+DEVICE_REGISTER_ROUTE( DeviceFW::READ,
+                       DeviceFW::PRESENT,
+                       TARGETING::TYPE_I2C_MUX,
+                       i2cMuxPresenceDetect );
+
+
+// ------------------------------------------------------------------
+// i2cMuxPresenceDetect
+// ------------------------------------------------------------------
+errlHndl_t i2cMuxPresenceDetect(DeviceFW::OperationType i_opType,
+                                TargetHandle_t          i_target,
+                                void*   io_isPresentBuffer,
+                                size_t& io_isPresentBufferSize,
+                                int64_t i_accessType,
+                                va_list i_args)
+{
+    TRACDCOMP(g_trac_i2c, ENTER_MRK"i2cMuxPresenceDetect()");
+
+    // Always return true
+    bool l_present = true;
+    memcpy(io_isPresentBuffer, &l_present, sizeof(l_present));
+    io_isPresentBufferSize = sizeof(l_present);
+
+    TRACDCOMP(g_trac_i2c, EXIT_MRK"i2cMuxPresenceDetect()");
+
+    return nullptr;
+}
+
+
+}  // namespace MUX_I2C