src/example_driver/example_driver.cc

// Copyright 2021 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "example_driver.h"

#include "greeter.h"

namespace example_driver {

zx::result<> ExampleDriver::Start() {
  // Initialize the driver compat service context.
  compat::Context::ConnectAndCreate(
      &context(), dispatcher(), fit::bind_member<&ExampleDriver::InitializeCompatService>(this));

  return zx::ok();
}

// Complete driver initialization using the driver compat service.
void ExampleDriver::InitializeCompatService(
    zx::result<std::shared_ptr<compat::Context>> compat_result) {
  if (!compat_result.is_ok()) {
    FDF_SLOG(ERROR, "Failed to create compat context.",
             KV("status", compat_result.status_string()));
    node().reset();
    return;
  }
  compat_context_ = std::move(*compat_result);
  child_ = compat::DeviceServer(std::string(name()), 0, compat_context_->TopologicalPath(name()));

  // Say hello
  FDF_SLOG(INFO, example_driver::greeting(name()).c_str());
  FDF_SLOG(INFO, example_driver::greeting(child_->topological_path()).c_str());
}

}  // namespace example_driver

FUCHSIA_DRIVER_RECORD_CPP_V2(driver::Record<example_driver::ExampleDriver>);