hwc: Add binder API to control partial update
Expose binder API to control partial update dynamically. Partial
update feature cannot co-exist with post processing features
dependent on histogram data. With this API, OEM's can set their
preferences on these features on use case basis.
Change-Id: Iee3eaa1593e057b1a0b7d35e642352f7f02c460f
diff --git a/libhwcomposer/hwc_mdpcomp.cpp b/libhwcomposer/hwc_mdpcomp.cpp
index 975c195..98cd1f4 100644
--- a/libhwcomposer/hwc_mdpcomp.cpp
+++ b/libhwcomposer/hwc_mdpcomp.cpp
@@ -26,6 +26,7 @@
#include "hwc_ad.h"
#include <overlayRotator.h>
#include "hwc_copybit.h"
+#include "qd_utils.h"
using namespace overlay;
using namespace qdutils;
@@ -48,6 +49,7 @@
bool MDPComp::sSrcSplitEnabled = false;
int MDPComp::sMaxSecLayers = 1;
bool MDPComp::enablePartialUpdateForMDP3 = false;
+bool MDPComp::sIsPartialUpdateActive = true;
MDPComp* MDPComp::getObject(hwc_context_t *ctx, const int& dpy) {
if(qdutils::MDPVersion::getInstance().isSrcSplit()) {
sSrcSplitEnabled = true;
@@ -1264,7 +1266,7 @@
hwc_display_contents_1_t* list){
if(!qdutils::MDPVersion::getInstance().isPartialUpdateEnabled() ||
isSkipPresent(ctx, mDpy) || (list->flags & HWC_GEOMETRY_CHANGED) ||
- mDpy ) {
+ !sIsPartialUpdateActive || mDpy ) {
return false;
}
if(ctx->listStats[mDpy].secureUI)
@@ -2737,5 +2739,27 @@
return 0;
}
+int MDPComp::setPartialUpdatePref(hwc_context_t *ctx, bool enable) {
+ Locker::Autolock _l(ctx->mDrawLock);
+ const int fbNum = Overlay::getFbForDpy(Overlay::DPY_PRIMARY);
+ char path[MAX_SYSFS_FILE_PATH];
+ snprintf (path, sizeof(path), "sys/class/graphics/fb%d/dyn_pu", fbNum);
+ int fd = open(path, O_WRONLY);
+ if(fd < 0) {
+ ALOGE("%s: Failed to open sysfd node", __FUNCTION__);
+ return -1;
+ }
+ char value[4];
+ snprintf(value, sizeof(value), "%d", (int)enable);
+ ssize_t ret = write(fd, value, strlen(value));
+ if(ret <= 0) {
+ ALOGE("%s: Failed to write to sysfd nodes", __FUNCTION__);
+ close(fd);
+ return -1;
+ }
+ close(fd);
+ sIsPartialUpdateActive = enable;
+ return 0;
+}
}; //namespace