/* * Copyright (C) 2008 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 <hardware_legacy/vibrator.h> #include "qemu.h" #include <stdio.h> #include <unistd.h> #include <fcntl.h> #include <errno.h> #define THE_DEVICE "/sys/class/timed_output/vibrator/enable" int vibrator_exists() { int fd; #ifdef QEMU_HARDWARE if (qemu_check()) { return 1; } #endif fd = open(THE_DEVICE, O_RDWR); if(fd < 0) return 0; close(fd); return 1; } static int sendit(int timeout_ms) { int nwr, ret, fd; char value[20]; #ifdef QEMU_HARDWARE if (qemu_check()) { return qemu_control_command( "vibrator:%d", timeout_ms ); } #endif fd = open(THE_DEVICE, O_RDWR); if(fd < 0) return errno; nwr = sprintf(value, "%d\n", timeout_ms); ret = write(fd, value, nwr); close(fd); return (ret == nwr) ? 0 : -1; } int vibrator_on(int timeout_ms) { /* constant on, up to maximum allowed time */ return sendit(timeout_ms); } int vibrator_off() { return sendit(0); }