android_hardware_qcom_display/libhwcomposer/hwc_uevents.cpp
Pawan Kumar 9d12887c02 libhwcomposer: Fix UI freeze on 8660 on HDMI cable connect
-In 3 layer bypass case on hdmi cable connection, UI freezes.
-Overlay state change from OV_BYPASS_3_LAYER to OV_UI_MIRROR
directly not possible on 8660 as BF pipe is not available.
-Add support to change overlay state via OV_CLOSED to make pipe free
 OV_BYPASS_3_LAYER-->OV_CLOSED-->OV_UI_MIRROR
-Move processUEventOnline to prepare thread.

Change-Id: I29c657ab799d1cd4ad52adcf6a8f86d18e76bcf9
CRs-Fixed: 386335

Conflicts:

	libhwcomposer/hwc_utils.h

Conflicts:
	libhwcomposer/hwc_utils.cpp
2012-10-14 15:47:48 -07:00

95 lines
2.8 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.
*/
#define DEBUG 0
#include <hardware_legacy/uevent.h>
#include <utils/Log.h>
#include <sys/resource.h>
#include <sys/prctl.h>
#include <string.h>
#include <stdlib.h>
#include "hwc_utils.h"
#include "hwc_external.h"
#define PAGE_SIZE 4096
namespace qhwc {
static void handle_uevent(hwc_context_t* ctx, const char* udata, int len)
{
int vsync = 0;
int64_t timestamp = 0;
const char *str = udata;
if(!strcasestr(str, "@/devices/virtual/graphics/fb")) {
ALOGD_IF(DEBUG, "%s: Not Ext Disp Event ", __FUNCTION__);
return;
}
// parse HDMI events
// The event will be of the form:
// change@/devices/virtual/graphics/fb1 ACTION=change
// DEVPATH=/devices/virtual/graphics/fb1
// SUBSYSTEM=graphics HDCP_STATE=FAIL MAJOR=29
// for now just parsing onlin/offline info is enough
str = udata;
if(!(strncmp(str,"online@",strlen("online@")))) {
strncpy(ctx->mHDMIEvent,str,strlen(str));
ctx->hdmi_pending = true;
//Invalidate
hwc_procs* proc = (hwc_procs*)ctx->device.reserved_proc[0];
if(!proc) {
ALOGE("%s: HWC proc not registered", __FUNCTION__);
} else {
proc->invalidate(proc);
}
} else if(!(strncmp(str,"offline@",strlen("offline@")))) {
ctx->hdmi_pending = false;
ctx->mExtDisplay->processUEventOffline(str);
}
}
static void *uevent_loop(void *param)
{
int len = 0;
static char udata[PAGE_SIZE];
hwc_context_t * ctx = reinterpret_cast<hwc_context_t *>(param);
char thread_name[64] = "hwcUeventThread";
prctl(PR_SET_NAME, (unsigned long) &thread_name, 0, 0, 0);
setpriority(PRIO_PROCESS, 0, HAL_PRIORITY_URGENT_DISPLAY);
uevent_init();
while(1) {
len = uevent_next_event(udata, sizeof(udata) - 2);
handle_uevent(ctx, udata, len);
}
return NULL;
}
void init_uevent_thread(hwc_context_t* ctx)
{
pthread_t uevent_thread;
ALOGI("Initializing UEvent Listener Thread");
pthread_create(&uevent_thread, NULL, uevent_loop, (void*) ctx);
}
}; //namespace