blob: b8db0bf2bc30b7c9cace92639f31f12cf2b55c98 [file] [log] [blame]
/*
* Copyright (c) 2012, The Linux Foundation. All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "idle_invalidator.h"
#include <unistd.h>
#include <poll.h>
#include <string.h>
#include <fcntl.h>
#include <cutils/properties.h>
#define II_DEBUG 0
#define IDLE_NOTIFY_PATH "/sys/devices/virtual/graphics/fb0/idle_notify"
#define IDLE_TIME_PATH "/sys/devices/virtual/graphics/fb0/idle_time"
static const char *threadName = "IdleInvalidator";
InvalidatorHandler IdleInvalidator::mHandler = NULL;
android::sp<IdleInvalidator> IdleInvalidator::sInstance(0);
IdleInvalidator::IdleInvalidator(): Thread(false), mHwcContext(0),
mTimeoutEventFd(-1) {
ALOGD_IF(II_DEBUG, "IdleInvalidator::%s", __FUNCTION__);
}
IdleInvalidator::~IdleInvalidator() {
if(mTimeoutEventFd >= 0) {
close(mTimeoutEventFd);
}
}
int IdleInvalidator::init(InvalidatorHandler reg_handler, void* user_data) {
mHandler = reg_handler;
mHwcContext = user_data;
// Open a sysfs node to receive the timeout notification from driver.
mTimeoutEventFd = open(IDLE_NOTIFY_PATH, O_RDONLY);
if (mTimeoutEventFd < 0) {
ALOGE ("%s:not able to open %s node %s",
__FUNCTION__, IDLE_NOTIFY_PATH, strerror(errno));
return -1;
}
int defaultIdleTime = 70; //ms
char property[PROPERTY_VALUE_MAX] = {0};
if((property_get("debug.mdpcomp.idletime", property, NULL) > 0)) {
defaultIdleTime = atoi(property);
}
if(not setIdleTimeout(defaultIdleTime)) {
close(mTimeoutEventFd);
mTimeoutEventFd = -1;
return -1;
}
//Triggers the threadLoop to run, if not already running.
run(threadName, android::PRIORITY_LOWEST);
return 0;
}
bool IdleInvalidator::setIdleTimeout(const uint32_t& timeout) {
ALOGD_IF(II_DEBUG, "IdleInvalidator::%s timeout %d",
__FUNCTION__, timeout);
// Open a sysfs node to send the timeout value to driver.
int fd = open(IDLE_TIME_PATH, O_WRONLY);
if (fd < 0) {
ALOGE ("%s:Unable to open %s node %s",
__FUNCTION__, IDLE_TIME_PATH, strerror(errno));
return false;
}
char strSleepTime[64];
snprintf(strSleepTime, sizeof(strSleepTime), "%d", timeout);
// Notify driver about the timeout value
ssize_t len = pwrite(fd, strSleepTime, strlen(strSleepTime), 0);
if(len < -1) {
ALOGE ("%s:Unable to write into %s node %s",
__FUNCTION__, IDLE_TIME_PATH, strerror(errno));
close(fd);
return false;
}
close(fd);
return true;
}
bool IdleInvalidator::threadLoop() {
ALOGD_IF(II_DEBUG, "IdleInvalidator::%s", __FUNCTION__);
struct pollfd pFd;
pFd.fd = mTimeoutEventFd;
if (pFd.fd >= 0)
pFd.events = POLLPRI | POLLERR;
// Poll for an timeout event from driver
int err = poll(&pFd, 1, -1);
if(err > 0) {
if (pFd.revents & POLLPRI) {
char data[64];
// Consume the node by reading it
ssize_t len = pread(pFd.fd, data, 64, 0);
ALOGD_IF(II_DEBUG, "IdleInvalidator::%s Idle Timeout fired len %zd",
__FUNCTION__, len);
mHandler((void*)mHwcContext);
}
}
return true;
}
int IdleInvalidator::readyToRun() {
ALOGD_IF(II_DEBUG, "IdleInvalidator::%s", __FUNCTION__);
return 0; /*NO_ERROR*/
}
void IdleInvalidator::onFirstRef() {
ALOGD_IF(II_DEBUG, "IdleInvalidator::%s", __FUNCTION__);
}
IdleInvalidator *IdleInvalidator::getInstance() {
ALOGD_IF(II_DEBUG, "IdleInvalidator::%s", __FUNCTION__);
if(sInstance.get() == NULL)
sInstance = new IdleInvalidator();
return sInstance.get();
}