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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 #include <cutils/log.h>
     17 #include <errno.h>
     18 #include <fcntl.h>
     19 #include <hardware/lights.h>
     20 #include <pthread.h>
     21 #include <stdint.h>
     22 #include <stdlib.h>
     23 #include <string.h>
     24 #include <sys/ioctl.h>
     25 #include <sys/types.h>
     26 #include <unistd.h>
     27 
     28 #include "guest/libs/platform_support/api_level_fixes.h"
     29 
     30 static int set_light(struct light_device_t* dev,
     31                      struct light_state_t const* state) {
     32   ALOGI("%s: dev %p state %p", __FUNCTION__, dev, state);
     33   if (state) {
     34     ALOGI("%s: state value %d\n", __FUNCTION__, state->color);
     35   }
     36   return 0;
     37 }
     38 
     39 static int close_lights(struct light_device_t* dev) {
     40   free(dev);
     41   return 0;
     42 }
     43 
     44 static int open_lights(const struct hw_module_t* module,
     45                        char const* name __unused, struct hw_device_t** device) {
     46   struct light_device_t* dev = malloc(sizeof(struct light_device_t));
     47   if (dev == NULL) {
     48     return -EINVAL;
     49   }
     50   memset(dev, 0, sizeof(*dev));
     51 
     52   dev->common.tag = HARDWARE_DEVICE_TAG;
     53   dev->common.version = 0;
     54   dev->common.module = (struct hw_module_t*)module;
     55   dev->common.close = (int (*)(struct hw_device_t*))close_lights;
     56   dev->set_light = set_light;
     57   *device = (struct hw_device_t*)dev;
     58   return 0;
     59 }
     60 
     61 static struct hw_module_methods_t lights_module_methods = {
     62     VSOC_STATIC_INITIALIZER(open) open_lights,
     63 };
     64 
     65 struct hw_module_t HAL_MODULE_INFO_SYM = {
     66     VSOC_STATIC_INITIALIZER(tag) HARDWARE_MODULE_TAG,
     67     VSOC_STATIC_INITIALIZER(version_major) 1,
     68     VSOC_STATIC_INITIALIZER(version_minor) 0,
     69     VSOC_STATIC_INITIALIZER(id) LIGHTS_HARDWARE_MODULE_ID,
     70     VSOC_STATIC_INITIALIZER(name) "Android GCE lights Module",
     71     VSOC_STATIC_INITIALIZER(author) "Google",
     72     VSOC_STATIC_INITIALIZER(methods) & lights_module_methods,
     73 };
     74