1 /****************************************************************************** 2 * 3 * Copyright (C) 2014 Google, Inc. 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ******************************************************************************/ 18 19 #include <signal.h> 20 #include <time.h> 21 22 #include "base.h" 23 #include "support/hal.h" 24 25 static bool set_wake_alarm(uint64_t delay_millis, bool should_wake, alarm_cb cb, void *data); 26 static int acquire_wake_lock(const char *lock_name); 27 static int release_wake_lock(const char *lock_name); 28 29 static const bluetooth_device_t *bt_device; 30 31 static bt_os_callouts_t callouts = { 32 sizeof(bt_os_callouts_t), 33 set_wake_alarm, 34 acquire_wake_lock, 35 release_wake_lock, 36 }; 37 38 bool hal_open(bt_callbacks_t *callbacks) { 39 hw_module_t *module; 40 if (hw_get_module(BT_STACK_MODULE_ID, (hw_module_t const **)&module)) { 41 return false; 42 } 43 44 hw_device_t *device; 45 if (module->methods->open(module, BT_STACK_MODULE_ID, &device)) { 46 return false; 47 } 48 49 bt_device = (bluetooth_device_t *)device; 50 bt_interface = bt_device->get_bluetooth_interface(); 51 if (!bt_interface) { 52 bt_device->common.close((hw_device_t *)&bt_device->common); 53 bt_device = NULL; 54 return false; 55 } 56 57 bool success = (bt_interface->init(callbacks) == BT_STATUS_SUCCESS); 58 success = success && (bt_interface->set_os_callouts(&callouts) == BT_STATUS_SUCCESS); 59 return success; 60 } 61 62 void hal_close() { 63 if (bt_interface) { 64 bt_interface->cleanup(); 65 bt_interface = NULL; 66 } 67 68 if (bt_device) { 69 bt_device->common.close((hw_device_t *)&bt_device->common); 70 bt_device = NULL; 71 } 72 } 73 74 static bool set_wake_alarm(uint64_t delay_millis, bool should_wake, alarm_cb cb, void *data) { 75 static timer_t timer; 76 static bool timer_created; 77 78 if (!timer_created) { 79 struct sigevent sigevent; 80 memset(&sigevent, 0, sizeof(sigevent)); 81 sigevent.sigev_notify = SIGEV_THREAD; 82 sigevent.sigev_notify_function = (void (*)(union sigval))cb; 83 sigevent.sigev_value.sival_ptr = data; 84 timer_create(CLOCK_MONOTONIC, &sigevent, &timer); 85 timer_created = true; 86 } 87 88 struct itimerspec new_value; 89 new_value.it_value.tv_sec = delay_millis / 1000; 90 new_value.it_value.tv_nsec = (delay_millis % 1000) * 1000 * 1000; 91 new_value.it_interval.tv_sec = 0; 92 new_value.it_interval.tv_nsec = 0; 93 timer_settime(timer, 0, &new_value, NULL); 94 95 return true; 96 } 97 98 static int acquire_wake_lock(const char *lock_name) { 99 return BT_STATUS_SUCCESS; 100 } 101 102 static int release_wake_lock(const char *lock_name) { 103 return BT_STATUS_SUCCESS; 104 } 105
