text: /*
   * Copyright (C) 2017 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 <cutils/log.h>
  #include <errno.h>
  #include <fcntl.h>
  #include <hardware/lights.h>
  #include <pthread.h>
  #include <stdint.h>
  #include <stdlib.h>
  #include <string.h>
  #include <sys/ioctl.h>
  #include <sys/types.h>
  #include <unistd.h>
  
  #include "guest/libs/platform_support/api_level_fixes.h"
  
  static int set_light(struct light_device_t* dev,
                       struct light_state_t const* state) {
    ALOGI("%s: dev %p state %p", __FUNCTION__, dev, state);
    if (state) {
      ALOGI("%s: state value %d\n", __FUNCTION__, state->color);
    }
    return 0;
  }
  
  static int close_lights(struct light_device_t* dev) {
    free(dev);
    return 0;
  }
  
  static int open_lights(const struct hw_module_t* module,
                         char const* name __unused, struct hw_device_t** device) {
    struct light_device_t* dev = malloc(sizeof(struct light_device_t));
    if (dev == NULL) {
      return -EINVAL;
    }
    memset(dev, 0, sizeof(*dev));
  
    dev->common.tag = HARDWARE_DEVICE_TAG;
    dev->common.version = 0;
    dev->common.module = (struct hw_module_t*)module;
    dev->common.close = (int (*)(struct hw_device_t*))close_lights;
    dev->set_light = set_light;
    *device = (struct hw_device_t*)dev;
    return 0;
  }
  
  static struct hw_module_methods_t lights_module_methods = {
      VSOC_STATIC_INITIALIZER(open) open_lights,
  };
  
  struct hw_module_t HAL_MODULE_INFO_SYM = {
      VSOC_STATIC_INITIALIZER(tag) HARDWARE_MODULE_TAG,
      VSOC_STATIC_INITIALIZER(version_major) 1,
      VSOC_STATIC_INITIALIZER(version_minor) 0,
      VSOC_STATIC_INITIALIZER(id) LIGHTS_HARDWARE_MODULE_ID,
      VSOC_STATIC_INITIALIZER(name) "Android GCE lights Module",
      VSOC_STATIC_INITIALIZER(author) "Google",
      VSOC_STATIC_INITIALIZER(methods) & lights_module_methods,
  };
  