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/*
* Copyright (C) 2011 CyanogenMod Project
* Copyright (C) 2011 Daniel Hillenbrand
*
* 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 <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/ioctl.h>
#define LOG_NDEBUG 0
#define LOG_TAG "tspdrv"
#include <utils/Log.h>
#include "tspdrv.h"
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;
}
int sendit(int timeout_ms)
{
int nwr, ret, fd, tspd, tspret, actuators;
char value[20];
tspd = open(TSPDRV_DEVICE, O_RDWR);
if(tspd < 0) {
LOGE("failed on opening /dev/tspdrv\n");
} else {
LOGV("opened device /dev/tspdrv\n");
}
/* send tspdrv magic number */
tspret = ioctl(tspd, TSPDRV_MAGIC_NUMBER);
if(tspret != 0) {
LOGE("TSPDRV_MAGIC_NUMBER error\n");
} else {
LOGV("TSPDRV_MAGIC_NUMBER success\n");
}
/* get number of actuators */
actuators = ioctl(tspd, TSPDRV_GET_NUM_ACTUATORS);
if(actuators < 1) {
LOGE("TSPDRV_GET_NUM_ACTUATORS error, no actuators available\n");
} else {
LOGV("TSPDRV_GET_NUM_ACTUATORS success, actuators = %d\n", actuators);
if(timeout_ms > 0) {
/* enable tspdrv amp */
tspret = ioctl(tspd, TSPDRV_ENABLE_AMP, actuators);
if(tspret != 0) {
LOGE("TSPDRV_ENABLE_AMP error\n");
} else {
LOGV("TSPDRV_ENABLE_AMP success\n");
}
}
}
fd = open(THE_DEVICE, O_RDWR);
if(fd < 0)
return errno;
LOGV("timeout_ms: %d\n", timeout_ms);
nwr = sprintf(value, "%d\n", timeout_ms);
ret = write(fd, value, nwr);
if(timeout_ms == 0) {
/* stop tspdrv kernel timer */
tspret = ioctl(tspd, TSPDRV_STOP_KERNEL_TIMER);
if(tspret != 0) {
LOGE("TSPDRV_STOP_KERNEL_TIMER error\n");
} else {
LOGV("TSPDRV_STOP_KERNEL_TIMER success\n");
}
/* disable tspdrv amp */
if(actuators >= 1) {
tspret = ioctl(tspd, TSPDRV_DISABLE_AMP, actuators);
if(tspret != 0) {
LOGE("TSPDRV_DISABLE_AMP error\n");
} else {
LOGV("TSPDRV_DISABLE_AMP success\n");
}
}
}
close(tspd);
close(fd);
return (ret == nwr) ? 0 : -1;
}
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