1 /* 2 * Copyright (C) 2012 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 17 #define LOG_TAG "emulator PowerHAL" 18 #include <utils/Log.h> 19 20 #include <hardware/hardware.h> 21 #include <hardware/power.h> 22 #include <hardware/qemud.h> 23 #include <fcntl.h> 24 #include <errno.h> 25 26 static int qemud_fd; 27 28 static void power_qemu_init(struct power_module *module) 29 { 30 qemud_fd = qemud_channel_open("hw-control"); 31 32 if (qemud_fd < 0) 33 ALOGE("Error connecting to qemud hw-control service\n"); 34 } 35 36 static void power_qemu_set_interactive(struct power_module *module, int on) 37 { 38 int r; 39 40 r = qemud_channel_send(qemud_fd, on ? "power:screen_state:wake" 41 : "power:screen_state:standby", -1); 42 43 if (r < 0) 44 ALOGE("Error sending power command to qemud hw-control service\n"); 45 } 46 47 static struct hw_module_methods_t power_qemu_module_methods = { 48 .open = NULL, 49 }; 50 51 struct power_module HAL_MODULE_INFO_SYM = { 52 .common = { 53 .tag = HARDWARE_MODULE_TAG, 54 .version_major = 1, 55 .version_minor = 0, 56 .id = POWER_HARDWARE_MODULE_ID, 57 .name = "Emulator Power HAL", 58 .author = "The Android Open Source Project", 59 .methods = &power_qemu_module_methods, 60 }, 61 62 .init = power_qemu_init, 63 .setInteractive = power_qemu_set_interactive, 64 }; 65
