CEC: Add support for multiple ports to default HdmiCec
Bug: 185434120
Test: manual
Change-Id: I4e1a1f2ff7cb4530e8b223169d8efd452412089b
diff --git a/tv/cec/1.0/default/HdmiCecPort.cpp b/tv/cec/1.0/default/HdmiCecPort.cpp
new file mode 100755
index 0000000..73dda12
--- /dev/null
+++ b/tv/cec/1.0/default/HdmiCecPort.cpp
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * 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.
+ */
+#define LOG_TAG "android.hardware.tv.cec@1.0-impl"
+
+#include <android-base/logging.h>
+#include <errno.h>
+#include <linux/cec.h>
+#include <linux/ioctl.h>
+#include <sys/eventfd.h>
+#include <algorithm>
+
+#include "HdmiCecPort.h"
+
+namespace android {
+namespace hardware {
+namespace tv {
+namespace cec {
+namespace V1_0 {
+namespace implementation {
+
+HdmiCecPort::HdmiCecPort(unsigned int portId) {
+ mPortId = portId;
+ mCecFd = -1;
+ mExitFd = -1;
+}
+
+HdmiCecPort::~HdmiCecPort() {
+ release();
+}
+
+// Initialise the cec file descriptor
+Return<Result> HdmiCecPort::init(const char* path) {
+ mCecFd = open(path, O_RDWR);
+ if (mCecFd < 0) {
+ LOG(ERROR) << "Failed to open " << path << ", Error = " << strerror(errno);
+ return Result::FAILURE_NOT_SUPPORTED;
+ }
+ mExitFd = eventfd(0, EFD_NONBLOCK);
+ if (mExitFd < 0) {
+ LOG(ERROR) << "Failed to open eventfd, Error = " << strerror(errno);
+ release();
+ return Result::FAILURE_NOT_SUPPORTED;
+ }
+
+ // Ensure the CEC device supports required capabilities
+ struct cec_caps caps = {};
+ int ret = ioctl(mCecFd, CEC_ADAP_G_CAPS, &caps);
+ if (ret) {
+ LOG(ERROR) << "Unable to query cec adapter capabilities, Error = " << strerror(errno);
+ release();
+ return Result::FAILURE_NOT_SUPPORTED;
+ }
+
+ if (!(caps.capabilities & (CEC_CAP_LOG_ADDRS | CEC_CAP_TRANSMIT | CEC_CAP_PASSTHROUGH))) {
+ LOG(ERROR) << "Wrong cec adapter capabilities " << caps.capabilities;
+ release();
+ return Result::FAILURE_NOT_SUPPORTED;
+ }
+
+ uint32_t mode = CEC_MODE_INITIATOR | CEC_MODE_EXCL_FOLLOWER_PASSTHRU;
+ ret = ioctl(mCecFd, CEC_S_MODE, &mode);
+ if (ret) {
+ LOG(ERROR) << "Unable to set initiator mode, Error = " << strerror(errno);
+ release();
+ return Result::FAILURE_NOT_SUPPORTED;
+ }
+ return Result::SUCCESS;
+}
+
+Return<void> HdmiCecPort::release() {
+ if (mExitFd > 0) {
+ uint64_t tmp = 1;
+ write(mExitFd, &tmp, sizeof(tmp));
+ }
+ if (mExitFd > 0) {
+ close(mExitFd);
+ }
+ if (mCecFd > 0) {
+ close(mCecFd);
+ }
+ return Void();
+}
+} // namespace implementation
+} // namespace V1_0
+} // namespace cec
+} // namespace tv
+} // namespace hardware
+} // namespace android