673e4933a1
* Read sysfs entries, to get vsync timestamp from kernel. * External display continues to use in ueventThread. * A new thread, vsyncThread is created to read and send vsync timestamps to HAL. * Disable H/W VSYNC for MDP 5.x targets until kernel changes are complete. (cherry picked from commit a61a58cb775631cd3899211f6ff0aed232f5f3c0) Change-Id: I58e09a092f81d4ff78b8cb4072ff06d2500c6f53
124 lines
3.8 KiB
C++
124 lines
3.8 KiB
C++
/*
|
|
* Copyright (C) 2010 The Android Open Source Project
|
|
* Copyright (C) 2012, Code Aurora Forum. All rights reserved.
|
|
*
|
|
* Not a Contribution, Apache license notifications and license are
|
|
* retained for attribution purposes only.
|
|
|
|
* 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.
|
|
*/
|
|
|
|
// WARNING : Excessive logging, if VSYNC_DEBUG enabled
|
|
#define VSYNC_DEBUG 0
|
|
|
|
#include <utils/Log.h>
|
|
#include <fcntl.h>
|
|
#include <sys/resource.h>
|
|
#include <sys/prctl.h>
|
|
#include "hwc_utils.h"
|
|
#include "hwc_external.h"
|
|
#include "string.h"
|
|
|
|
#define PAGE_SIZE 4096
|
|
|
|
namespace qhwc {
|
|
|
|
static void *vsync_loop(void *param)
|
|
{
|
|
const char* vsync_timestamp_fb0 = "/sys/class/graphics/fb0/vsync_event";
|
|
const char* vsync_timestamp_fb1 = "/sys/class/graphics/fb1/vsync_event";
|
|
|
|
hwc_context_t * ctx = reinterpret_cast<hwc_context_t *>(param);
|
|
|
|
char thread_name[64] = "hwcVsyncThread";
|
|
prctl(PR_SET_NAME, (unsigned long) &thread_name, 0, 0, 0);
|
|
setpriority(PRIO_PROCESS, 0, HAL_PRIORITY_URGENT_DISPLAY);
|
|
|
|
static char vdata[PAGE_SIZE];
|
|
|
|
uint64_t cur_timestamp=0;
|
|
int32_t len = -1, fd_timestamp = -1;
|
|
bool fb1_vsync = false;
|
|
|
|
/* Currently read vsync timestamp from drivers
|
|
VSYNC=41800875994
|
|
*/
|
|
|
|
hwc_procs* proc = (hwc_procs*)ctx->device.reserved_proc[0];
|
|
|
|
do {
|
|
|
|
int hdmiconnected = ctx->mExtDisplay->getExternalDisplay();
|
|
|
|
// vsync for primary OR HDMI ?
|
|
if(ctx->mExtDisplay->isHDMIConfigured() &&
|
|
(hdmiconnected == EXTERN_DISPLAY_FB1)){
|
|
fb1_vsync = true;
|
|
} else {
|
|
fb1_vsync = false;
|
|
}
|
|
|
|
// try to open timestamp sysfs
|
|
if (fb1_vsync){
|
|
fd_timestamp = open(vsync_timestamp_fb1, O_RDONLY);
|
|
} else {
|
|
fd_timestamp = open(vsync_timestamp_fb0, O_RDONLY);
|
|
}
|
|
if (fd_timestamp < 0) {
|
|
ALOGE ("FATAL:%s:not able to open file:%s, %s", __FUNCTION__,
|
|
(fb1_vsync) ? vsync_timestamp_fb1 : vsync_timestamp_fb0,
|
|
strerror(errno));
|
|
return NULL;
|
|
}
|
|
|
|
// Open success - read now
|
|
len = read(fd_timestamp, vdata, PAGE_SIZE);
|
|
if (len < 0){
|
|
ALOGE ("FATAL:%s:not able to read file:%s, %s", __FUNCTION__,
|
|
(fb1_vsync) ? vsync_timestamp_fb1 : vsync_timestamp_fb0,
|
|
strerror(errno));
|
|
return NULL;
|
|
}
|
|
|
|
// extract timestamp
|
|
const char *str = vdata;
|
|
if (!strncmp(str, "VSYNC=", strlen("VSYNC="))) {
|
|
cur_timestamp = strtoull(str + strlen("VSYNC="), NULL, 0);
|
|
} else {
|
|
ALOGE ("FATAL:%s:timestamp data not in correct format",
|
|
__FUNCTION__);
|
|
}
|
|
// send timestamp to HAL
|
|
ALOGD_IF (VSYNC_DEBUG, "%s: timestamp %llu sent to HWC for %s",
|
|
__FUNCTION__, cur_timestamp, (fb1_vsync) ? "fb1" : "fb0");
|
|
proc->vsync(proc, 0, cur_timestamp);
|
|
|
|
// close open fds
|
|
close (fd_timestamp);
|
|
|
|
// reset fd
|
|
fd_timestamp = -1;
|
|
|
|
// repeat, whatever, you just did
|
|
} while (true);
|
|
}
|
|
|
|
void init_vsync_thread(hwc_context_t* ctx)
|
|
{
|
|
pthread_t vsync_thread;
|
|
ALOGI("Initializing VSYNC Thread");
|
|
pthread_create(&vsync_thread, NULL, vsync_loop, (void*) ctx);
|
|
}
|
|
|
|
}; //namespace
|