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
86 lines
2.5 KiB
C++
86 lines
2.5 KiB
C++
/*
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* Copyright (C) 2010 The Android Open Source Project
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* Copyright (C) 2012, Code Aurora Forum. All rights reserved.
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*
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* Not a Contribution, Apache license notifications and license are
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* retained for attribution purposes only.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define DEBUG 0
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#include <hardware_legacy/uevent.h>
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#include <utils/Log.h>
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#include <sys/resource.h>
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#include <sys/prctl.h>
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#include <string.h>
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#include <stdlib.h>
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#include "hwc_utils.h"
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#include "hwc_external.h"
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#define PAGE_SIZE 4096
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namespace qhwc {
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static void handle_uevent(hwc_context_t* ctx, const char* udata, int len)
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{
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int vsync = 0;
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int64_t timestamp = 0;
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const char *str = udata;
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if(!strcasestr(str, "@/devices/virtual/graphics/fb")) {
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ALOGD_IF(DEBUG, "%s: Not Ext Disp Event ", __FUNCTION__);
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return;
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}
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// parse HDMI events
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// The event will be of the form:
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// change@/devices/virtual/graphics/fb1 ACTION=change
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// DEVPATH=/devices/virtual/graphics/fb1
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// SUBSYSTEM=graphics HDCP_STATE=FAIL MAJOR=29
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// for now just parsing onlin/offline info is enough
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str = udata;
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if(!(strncmp(str,"online@",strlen("online@")))) {
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ctx->mExtDisplay->processUEventOnline(str);
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} else if(!(strncmp(str,"offline@",strlen("offline@")))) {
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ctx->mExtDisplay->processUEventOffline(str);
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}
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}
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static void *uevent_loop(void *param)
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{
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int len = 0;
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static char udata[PAGE_SIZE];
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hwc_context_t * ctx = reinterpret_cast<hwc_context_t *>(param);
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char thread_name[64] = "hwcUeventThread";
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prctl(PR_SET_NAME, (unsigned long) &thread_name, 0, 0, 0);
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setpriority(PRIO_PROCESS, 0, HAL_PRIORITY_URGENT_DISPLAY);
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uevent_init();
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while(1) {
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len = uevent_next_event(udata, sizeof(udata) - 2);
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handle_uevent(ctx, udata, len);
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}
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return NULL;
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}
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void init_uevent_thread(hwc_context_t* ctx)
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{
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pthread_t uevent_thread;
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ALOGI("Initializing UEvent Listener Thread");
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pthread_create(&uevent_thread, NULL, uevent_loop, (void*) ctx);
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}
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}; //namespace
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