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/*
* Copyright (C) 2016 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.
*/
#include "led_manager.h"
#include <base/logging.h>
namespace android {
std::unique_ptr<LedManager> g_led_manager;
LedManager::LedManager() {}
LedManager::~LedManager() {}
// static
LedManager* LedManager::GetLedManager() {
if (!g_led_manager) {
g_led_manager.reset(new LedManager());
}
return g_led_manager.get();
}
bool LedManager::RegisterDriver(
std::unique_ptr<LedDriverInfoBase> driver_info) {
std::string key = driver_info->Compat();
driver_infos_[key] = std::move(driver_info);
return true;
}
bool LedManager::RegisterLedSysfs(const std::string& name, const std::string& led_name) {
if (leds_.count(name))
return false;
leds_[name].name = led_name;
return true;
}
std::unique_ptr<Led> LedManager::OpenLed(const std::string& name) {
auto led_it = leds_.find(name);
if (led_it == leds_.end()) {
LOG(WARNING) << "LedManager: Led not found. " << name;
return nullptr;
}
// Check its not alread in use
if (led_it->second.driver_) {
LOG(WARNING) << "LedManager: Led in use. " << name;
return nullptr;
}
// Find a driver.
auto driver_info_it = driver_infos_.find("LEDSYSFS");
// Fail if there is no driver.
if (driver_info_it == driver_infos_.end()) {
LOG(WARNING) << "LedManager: Failed to find driver " << name;
return nullptr;
}
std::unique_ptr<LedDriverInterface> driver(driver_info_it->second->Probe());
// Set pin mux
if (!led_it->second.mux.empty()) {
//TODO(leecam): Enable pin muxing
}
if (!driver->Init(led_it->second.name)) {
LOG(WARNING) << "LedManager: Failed to init driver " << name;
return nullptr;
}
led_it->second.driver_ = std::move(driver);
return std::unique_ptr<Led>(new Led(&(led_it->second)));
}
std::vector<std::string> LedManager::GetLeds() {
std::vector<std::string> leds;
for (auto& i : leds_)
leds.push_back(i.first);
return leds;
}
bool LedManager::HasLed(const std::string& name) {
return leds_.count(name);
}
} // namespace android
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