75 lines
1.6 KiB
C
75 lines
1.6 KiB
C
/*
|
|
* 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);
|
|
}
|