1 /*
2 * Copyright (C) 2008 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 <hardware_legacy/vibrator.h>
17 #include "qemu.h"
18
19 #include <stdio.h>
20 #include <unistd.h>
21 #include <fcntl.h>
22 #include <errno.h>
23
24 #define THE_DEVICE "/sys/class/timed_output/vibrator/enable"
25
sendit(int timeout_ms)26 static int sendit(int timeout_ms)
27 {
28 int nwr, ret, fd;
29 char value[20];
30
31 #ifdef QEMU_HARDWARE
32 if (qemu_check()) {
33 return qemu_control_command( "vibrator:%d", timeout_ms );
34 }
35 #endif
36
37 fd = open(THE_DEVICE, O_RDWR);
38 if(fd < 0)
39 return errno;
40
41 nwr = sprintf(value, "%d\n", timeout_ms);
42 ret = write(fd, value, nwr);
43
44 close(fd);
45
46 return (ret == nwr) ? 0 : -1;
47 }
48
vibrator_on(int timeout_ms)49 int vibrator_on(int timeout_ms)
50 {
51 /* constant on, up to maximum allowed time */
52 return sendit(timeout_ms);
53 }
54
vibrator_off()55 int vibrator_off()
56 {
57 return sendit(0);
58 }
59