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20585702e8e1f489dd2b2fac02151c657bd93eea
android_vendor_qcom_opensou…/libhwcomposer/hwc.cpp
Naseer Ahmed 20585702e8 hwc: Don't lock eventControl for vsync events 
Locking here can lead to a delay in vsync disable/enable
where prepare/set is not yet completed. The HWC spec says that
eventControl needs to take effect immediately.
This lock was earlier present when we waited for SF to unblank
primary at startup and the vsync control ioctls could fail.
This is no longer necessary as we unblank primary on startup now.

Change-Id: I2bf18ae9235f8dd428a495a9a23af7f00f34ff1d
2013-07-11 11:22:41 -04:00

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/*
* Copyright (C) 2010 The Android Open Source Project
* Copyright (C) 2012-2013, The Linux Foundation. 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 ATRACE_TAG ATRACE_TAG_GRAPHICS
#include <fcntl.h>
#include <errno.h>
#include <cutils/log.h>
#include <cutils/atomic.h>
#include <EGL/egl.h>
#include <utils/Trace.h>
#include <sys/ioctl.h>
#include <overlay.h>
#include <overlayRotator.h>
#include <mdp_version.h>
#include "hwc_utils.h"
#include "hwc_fbupdate.h"
#include "hwc_mdpcomp.h"
#include "hwc_dump_layers.h"
#include "external.h"
#include "hwc_copybit.h"
#include "profiler.h"
using namespace qhwc;
using namespace overlay;
#define VSYNC_DEBUG 0
#define BLANK_DEBUG 1
static int hwc_device_open(const struct hw_module_t* module,
const char* name,
struct hw_device_t** device);
static struct hw_module_methods_t hwc_module_methods = {
open: hwc_device_open
};
hwc_module_t HAL_MODULE_INFO_SYM = {
common: {
tag: HARDWARE_MODULE_TAG,
version_major: 2,
version_minor: 0,
id: HWC_HARDWARE_MODULE_ID,
name: "Qualcomm Hardware Composer Module",
author: "CodeAurora Forum",
methods: &hwc_module_methods,
dso: 0,
reserved: {0},
}
};
/*
* Save callback functions registered to HWC
*/
static void hwc_registerProcs(struct hwc_composer_device_1* dev,
hwc_procs_t const* procs)
{
ALOGI("%s", __FUNCTION__);
hwc_context_t* ctx = (hwc_context_t*)(dev);
if(!ctx) {
ALOGE("%s: Invalid context", __FUNCTION__);
return;
}
ctx->proc = procs;
// Now that we have the functions needed, kick off
// the uevent & vsync threads
init_uevent_thread(ctx);
init_vsync_thread(ctx);
}
//Helper
static void reset(hwc_context_t *ctx, int numDisplays,
hwc_display_contents_1_t** displays) {
for(int i = 0; i < MAX_DISPLAYS; i++) {
hwc_display_contents_1_t *list = displays[i];
// XXX:SurfaceFlinger no longer guarantees that this
// value is reset on every prepare. However, for the layer
// cache we need to reset it.
// We can probably rethink that later on
if (LIKELY(list && list->numHwLayers > 1)) {
for(uint32_t j = 0; j < list->numHwLayers; j++) {
if(list->hwLayers[j].compositionType != HWC_FRAMEBUFFER_TARGET)
list->hwLayers[j].compositionType = HWC_FRAMEBUFFER;
}
}
if(ctx->mFBUpdate[i])
ctx->mFBUpdate[i]->reset();
if(ctx->mCopyBit[i])
ctx->mCopyBit[i]->reset();
if(ctx->mLayerRotMap[i])
ctx->mLayerRotMap[i]->reset();
}
}
//clear prev layer prop flags and realloc for current frame
static void reset_layer_prop(hwc_context_t* ctx, int dpy, int numAppLayers) {
if(ctx->layerProp[dpy]) {
delete[] ctx->layerProp[dpy];
ctx->layerProp[dpy] = NULL;
}
ctx->layerProp[dpy] = new LayerProp[numAppLayers];
}
static int display_commit(hwc_context_t *ctx, int dpy) {
struct mdp_display_commit commit_info;
memset(&commit_info, 0, sizeof(struct mdp_display_commit));
commit_info.flags = MDP_DISPLAY_COMMIT_OVERLAY;
if(ioctl(ctx->dpyAttr[dpy].fd, MSMFB_DISPLAY_COMMIT, &commit_info) == -1) {
ALOGE("%s: MSMFB_DISPLAY_COMMIT for dpy %d failed", __FUNCTION__,dpy);
return -errno;
}
return 0;
}
static int hwc_prepare_primary(hwc_composer_device_1 *dev,
hwc_display_contents_1_t *list) {
hwc_context_t* ctx = (hwc_context_t*)(dev);
const int dpy = HWC_DISPLAY_PRIMARY;
if (LIKELY(list && list->numHwLayers > 1) &&
ctx->dpyAttr[dpy].isActive) {
reset_layer_prop(ctx, dpy, list->numHwLayers - 1);
uint32_t last = list->numHwLayers - 1;
hwc_layer_1_t *fbLayer = &list->hwLayers[last];
if(fbLayer->handle) {
setListStats(ctx, list, dpy);
int fbZOrder = ctx->mMDPComp[dpy]->prepare(ctx, list);
if(fbZOrder >= 0)
ctx->mFBUpdate[dpy]->prepare(ctx, list, fbZOrder);
if (ctx->mMDP.version < qdutils::MDP_V4_0) {
if((fbZOrder >= 0) && ctx->mCopyBit[dpy])
ctx->mCopyBit[dpy]->prepare(ctx, list, dpy);
}
}
}
return 0;
}
static int hwc_prepare_external(hwc_composer_device_1 *dev,
hwc_display_contents_1_t *list, int dpy) {
hwc_context_t* ctx = (hwc_context_t*)(dev);
Locker::Autolock _l(ctx->mExtLock);
if (LIKELY(list && list->numHwLayers > 1) &&
ctx->dpyAttr[dpy].isActive &&
ctx->dpyAttr[dpy].connected) {
reset_layer_prop(ctx, dpy, list->numHwLayers - 1);
uint32_t last = list->numHwLayers - 1;
hwc_layer_1_t *fbLayer = &list->hwLayers[last];
if(!ctx->dpyAttr[dpy].isPause) {
if(fbLayer->handle) {
ctx->mExtDispConfiguring = false;
setListStats(ctx, list, dpy);
int fbZOrder = ctx->mMDPComp[dpy]->prepare(ctx, list);
if(ctx->deviceOrientation &&
ctx->listStats[dpy].isDisplayAnimating) {
fbZOrder = 0;
}
if(fbZOrder >= 0)
ctx->mFBUpdate[dpy]->prepare(ctx, list, fbZOrder);
/* Temporarily commenting out C2D until we support partial
copybit composition for mixed mode MDP
if((fbZOrder >= 0) && ctx->mCopyBit[dpy])
ctx->mCopyBit[dpy]->prepare(ctx, list, dpy);
*/
if(ctx->listStats[dpy].isDisplayAnimating) {
// Mark all app layers as HWC_OVERLAY for external during
// animation, so that SF doesnt draw it on FB
for(int i = 0 ;i < ctx->listStats[dpy].numAppLayers; i++) {
hwc_layer_1_t *layer = &list->hwLayers[i];
layer->compositionType = HWC_OVERLAY;
}
}
}
} else {
// External Display is in Pause state.
// ToDo:
// Mark all application layers as OVERLAY so that
// GPU will not compose. This is done for power
// optimization
}
}
return 0;
}
static int hwc_prepare(hwc_composer_device_1 *dev, size_t numDisplays,
hwc_display_contents_1_t** displays)
{
int ret = 0;
hwc_context_t* ctx = (hwc_context_t*)(dev);
Locker::Autolock _l(ctx->mBlankLock);
reset(ctx, numDisplays, displays);
ctx->mOverlay->configBegin();
ctx->mRotMgr->configBegin();
Overlay::setDMAMode(Overlay::DMA_LINE_MODE);
for (int32_t i = numDisplays; i >= 0; i--) {
hwc_display_contents_1_t *list = displays[i];
switch(i) {
case HWC_DISPLAY_PRIMARY:
ret = hwc_prepare_primary(dev, list);
break;
case HWC_DISPLAY_EXTERNAL:
case HWC_DISPLAY_VIRTUAL:
ret = hwc_prepare_external(dev, list, i);
break;
default:
ret = -EINVAL;
}
}
ctx->mOverlay->configDone();
ctx->mRotMgr->configDone();
return ret;
}
static int hwc_eventControl(struct hwc_composer_device_1* dev, int dpy,
int event, int enable)
{
int ret = 0;
hwc_context_t* ctx = (hwc_context_t*)(dev);
switch(event) {
case HWC_EVENT_VSYNC:
if (ctx->vstate.enable == enable)
break;
ret = hwc_vsync_control(ctx, dpy, enable);
if(ret == 0)
ctx->vstate.enable = !!enable;
ALOGD_IF (VSYNC_DEBUG, "VSYNC state changed to %s",
(enable)?"ENABLED":"DISABLED");
break;
#ifdef QCOM_BSP
case HWC_EVENT_ORIENTATION:
if(dpy == HWC_DISPLAY_PRIMARY) {
Locker::Autolock _l(ctx->mBlankLock);
// store the primary display orientation
// will be used in hwc_video::configure to disable
// rotation animation on external display
ctx->deviceOrientation = enable;
}
break;
#endif
default:
ret = -EINVAL;
}
return ret;
}
static int hwc_blank(struct hwc_composer_device_1* dev, int dpy, int blank)
{
ATRACE_CALL();
hwc_context_t* ctx = (hwc_context_t*)(dev);
Locker::Autolock _l(ctx->mBlankLock);
int ret = 0;
ALOGD_IF(BLANK_DEBUG, "%s: %s display: %d", __FUNCTION__,
blank==1 ? "Blanking":"Unblanking", dpy);
if(blank) {
// free up all the overlay pipes in use
// when we get a blank for either display
// makes sure that all pipes are freed
ctx->mOverlay->configBegin();
ctx->mOverlay->configDone();
ctx->mRotMgr->clear();
}
switch(dpy) {
case HWC_DISPLAY_PRIMARY:
if(blank) {
ret = ioctl(ctx->dpyAttr[dpy].fd, FBIOBLANK,FB_BLANK_POWERDOWN);
if(ctx->dpyAttr[HWC_DISPLAY_VIRTUAL].connected == true) {
// Surfaceflinger does not send Blank/unblank event to hwc
// for virtual display, handle it explicitly when blank for
// primary is invoked, so that any pipes unset get committed
if (display_commit(ctx, HWC_DISPLAY_VIRTUAL) < 0) {
ret = -1;
ALOGE("%s:post failed for virtual display !!",
__FUNCTION__);
} else {
ctx->dpyAttr[HWC_DISPLAY_VIRTUAL].isActive = !blank;
}
}
} else {
ret = ioctl(ctx->dpyAttr[dpy].fd, FBIOBLANK, FB_BLANK_UNBLANK);
if(ctx->dpyAttr[HWC_DISPLAY_VIRTUAL].connected == true) {
ctx->dpyAttr[HWC_DISPLAY_VIRTUAL].isActive = !blank;
}
}
break;
case HWC_DISPLAY_EXTERNAL:
if(blank) {
// call external framebuffer commit on blank,
// so that any pipe unsets gets committed
if (display_commit(ctx, dpy) < 0) {
ret = -1;
ALOGE("%s:post failed for external display !! ",
__FUNCTION__);
}
} else {
}
break;
default:
return -EINVAL;
}
// Enable HPD here, as during bootup unblank is called
// when SF is completely initialized
ctx->mExtDisplay->setHPD(1);
if(ret == 0){
ctx->dpyAttr[dpy].isActive = !blank;
} else {
ALOGE("%s: Failed in %s display: %d error:%s", __FUNCTION__,
blank==1 ? "blanking":"unblanking", dpy, strerror(errno));
return ret;
}
ALOGD_IF(BLANK_DEBUG, "%s: Done %s display: %d", __FUNCTION__,
blank==1 ? "blanking":"unblanking", dpy);
return 0;
}
static int hwc_query(struct hwc_composer_device_1* dev,
int param, int* value)
{
hwc_context_t* ctx = (hwc_context_t*)(dev);
int supported = HWC_DISPLAY_PRIMARY_BIT;
switch (param) {
case HWC_BACKGROUND_LAYER_SUPPORTED:
// Not supported for now
value[0] = 0;
break;
case HWC_DISPLAY_TYPES_SUPPORTED:
if(ctx->mMDP.hasOverlay)
supported |= HWC_DISPLAY_EXTERNAL_BIT;
value[0] = supported;
break;
default:
return -EINVAL;
}
return 0;
}
static int hwc_set_primary(hwc_context_t *ctx, hwc_display_contents_1_t* list) {
ATRACE_CALL();
int ret = 0;
const int dpy = HWC_DISPLAY_PRIMARY;
if (LIKELY(list) && ctx->dpyAttr[dpy].isActive) {
uint32_t last = list->numHwLayers - 1;
hwc_layer_1_t *fbLayer = &list->hwLayers[last];
int fd = -1; //FenceFD from the Copybit(valid in async mode)
bool copybitDone = false;
if(ctx->mCopyBit[dpy])
copybitDone = ctx->mCopyBit[dpy]->draw(ctx, list, dpy, &fd);
if(list->numHwLayers > 1)
hwc_sync(ctx, list, dpy, fd);
// Dump the layers for primary
if(ctx->mHwcDebug[dpy])
ctx->mHwcDebug[dpy]->dumpLayers(list);
if (!ctx->mMDPComp[dpy]->draw(ctx, list)) {
ALOGE("%s: MDPComp draw failed", __FUNCTION__);
ret = -1;
}
//TODO We dont check for SKIP flag on this layer because we need PAN
//always. Last layer is always FB
private_handle_t *hnd = (private_handle_t *)fbLayer->handle;
if(copybitDone) {
hnd = ctx->mCopyBit[dpy]->getCurrentRenderBuffer();
}
if(hnd) {
if (!ctx->mFBUpdate[dpy]->draw(ctx, hnd)) {
ALOGE("%s: FBUpdate draw failed", __FUNCTION__);
ret = -1;
}
}
if (display_commit(ctx, dpy) < 0) {
ALOGE("%s: display commit fail!", __FUNCTION__);
ret = -1;
}
}
closeAcquireFds(list);
return ret;
}
static int hwc_set_external(hwc_context_t *ctx,
hwc_display_contents_1_t* list, int dpy)
{
ATRACE_CALL();
int ret = 0;
Locker::Autolock _l(ctx->mExtLock);
if (LIKELY(list) && ctx->dpyAttr[dpy].isActive &&
ctx->dpyAttr[dpy].connected) {
if(!ctx->dpyAttr[dpy].isPause) {
uint32_t last = list->numHwLayers - 1;
hwc_layer_1_t *fbLayer = &list->hwLayers[last];
int fd = -1; //FenceFD from the Copybit(valid in async mode)
bool copybitDone = false;
if(ctx->mCopyBit[dpy])
copybitDone = ctx->mCopyBit[dpy]->draw(ctx, list, dpy, &fd);
if(list->numHwLayers > 1)
hwc_sync(ctx, list, dpy, fd);
// Dump the layers for external
if(ctx->mHwcDebug[dpy])
ctx->mHwcDebug[dpy]->dumpLayers(list);
if (!ctx->mMDPComp[dpy]->draw(ctx, list)) {
ALOGE("%s: MDPComp draw failed", __FUNCTION__);
ret = -1;
}
int extOnlyLayerIndex =
ctx->listStats[dpy].extOnlyLayerIndex;
private_handle_t *hnd = (private_handle_t *)fbLayer->handle;
if(extOnlyLayerIndex!= -1) {
hwc_layer_1_t *extLayer = &list->hwLayers[extOnlyLayerIndex];
hnd = (private_handle_t *)extLayer->handle;
} else if(copybitDone) {
hnd = ctx->mCopyBit[dpy]->getCurrentRenderBuffer();
}
if(hnd && !isYuvBuffer(hnd)) {
if (!ctx->mFBUpdate[dpy]->draw(ctx, hnd)) {
ALOGE("%s: FBUpdate::draw fail!", __FUNCTION__);
ret = -1;
}
}
}
if (display_commit(ctx, dpy) < 0) {
ALOGE("%s: display commit fail!", __FUNCTION__);
ret = -1;
}
}
closeAcquireFds(list);
return ret;
}
static int hwc_set(hwc_composer_device_1 *dev,
size_t numDisplays,
hwc_display_contents_1_t** displays)
{
int ret = 0;
hwc_context_t* ctx = (hwc_context_t*)(dev);
Locker::Autolock _l(ctx->mBlankLock);
for (uint32_t i = 0; i <= numDisplays; i++) {
hwc_display_contents_1_t* list = displays[i];
switch(i) {
case HWC_DISPLAY_PRIMARY:
ret = hwc_set_primary(ctx, list);
break;
case HWC_DISPLAY_EXTERNAL:
case HWC_DISPLAY_VIRTUAL:
/* ToDo: We are using hwc_set_external path for both External and
Virtual displays on HWC1.1. Eventually, we will have
separate functions when we move to HWC1.2
*/
ret = hwc_set_external(ctx, list, i);
break;
default:
ret = -EINVAL;
}
}
// This is only indicative of how many times SurfaceFlinger posts
// frames to the display.
CALC_FPS();
MDPComp::resetIdleFallBack();
ctx->mVideoTransFlag = false;
return ret;
}
int hwc_getDisplayConfigs(struct hwc_composer_device_1* dev, int disp,
uint32_t* configs, size_t* numConfigs) {
int ret = 0;
hwc_context_t* ctx = (hwc_context_t*)(dev);
//in 1.1 there is no way to choose a config, report as config id # 0
//This config is passed to getDisplayAttributes. Ignore for now.
switch(disp) {
case HWC_DISPLAY_PRIMARY:
if(*numConfigs > 0) {
configs[0] = 0;
*numConfigs = 1;
}
ret = 0; //NO_ERROR
break;
case HWC_DISPLAY_EXTERNAL:
ret = -1; //Not connected
if(ctx->dpyAttr[HWC_DISPLAY_EXTERNAL].connected) {
ret = 0; //NO_ERROR
if(*numConfigs > 0) {
configs[0] = 0;
*numConfigs = 1;
}
}
break;
}
return ret;
}
int hwc_getDisplayAttributes(struct hwc_composer_device_1* dev, int disp,
uint32_t config, const uint32_t* attributes, int32_t* values) {
hwc_context_t* ctx = (hwc_context_t*)(dev);
//If hotpluggable displays are inactive return error
if(disp == HWC_DISPLAY_EXTERNAL && !ctx->dpyAttr[disp].connected) {
return -1;
}
//From HWComposer
static const uint32_t DISPLAY_ATTRIBUTES[] = {
HWC_DISPLAY_VSYNC_PERIOD,
HWC_DISPLAY_WIDTH,
HWC_DISPLAY_HEIGHT,
HWC_DISPLAY_DPI_X,
HWC_DISPLAY_DPI_Y,
HWC_DISPLAY_NO_ATTRIBUTE,
};
const int NUM_DISPLAY_ATTRIBUTES = (sizeof(DISPLAY_ATTRIBUTES) /
sizeof(DISPLAY_ATTRIBUTES)[0]);
for (size_t i = 0; i < NUM_DISPLAY_ATTRIBUTES - 1; i++) {
switch (attributes[i]) {
case HWC_DISPLAY_VSYNC_PERIOD:
values[i] = ctx->dpyAttr[disp].vsync_period;
break;
case HWC_DISPLAY_WIDTH:
values[i] = ctx->dpyAttr[disp].xres;
ALOGD("%s disp = %d, width = %d",__FUNCTION__, disp,
ctx->dpyAttr[disp].xres);
break;
case HWC_DISPLAY_HEIGHT:
values[i] = ctx->dpyAttr[disp].yres;
ALOGD("%s disp = %d, height = %d",__FUNCTION__, disp,
ctx->dpyAttr[disp].yres);
break;
case HWC_DISPLAY_DPI_X:
values[i] = (int32_t) (ctx->dpyAttr[disp].xdpi*1000.0);
break;
case HWC_DISPLAY_DPI_Y:
values[i] = (int32_t) (ctx->dpyAttr[disp].ydpi*1000.0);
break;
default:
ALOGE("Unknown display attribute %d",
attributes[i]);
return -EINVAL;
}
}
return 0;
}
void hwc_dump(struct hwc_composer_device_1* dev, char *buff, int buff_len)
{
hwc_context_t* ctx = (hwc_context_t*)(dev);
android::String8 aBuf("");
dumpsys_log(aBuf, "Qualcomm HWC state:\n");
dumpsys_log(aBuf, " MDPVersion=%d\n", ctx->mMDP.version);
dumpsys_log(aBuf, " DisplayPanel=%c\n", ctx->mMDP.panel);
for(int dpy = 0; dpy < MAX_DISPLAYS; dpy++) {
if(ctx->mMDPComp[dpy])
ctx->mMDPComp[dpy]->dump(aBuf);
}
char ovDump[2048] = {'\0'};
ctx->mOverlay->getDump(ovDump, 2048);
dumpsys_log(aBuf, ovDump);
ovDump[0] = '\0';
ctx->mRotMgr->getDump(ovDump, 1024);
dumpsys_log(aBuf, ovDump);
strlcpy(buff, aBuf.string(), buff_len);
}
static int hwc_device_close(struct hw_device_t *dev)
{
if(!dev) {
ALOGE("%s: NULL device pointer", __FUNCTION__);
return -1;
}
closeContext((hwc_context_t*)dev);
free(dev);
return 0;
}
static int hwc_device_open(const struct hw_module_t* module, const char* name,
struct hw_device_t** device)
{
int status = -EINVAL;
if (!strcmp(name, HWC_HARDWARE_COMPOSER)) {
struct hwc_context_t *dev;
dev = (hwc_context_t*)malloc(sizeof(*dev));
memset(dev, 0, sizeof(*dev));
//Initialize hwc context
initContext(dev);
//Setup HWC methods
dev->device.common.tag = HARDWARE_DEVICE_TAG;
dev->device.common.version = HWC_DEVICE_API_VERSION_1_1;
dev->device.common.module = const_cast<hw_module_t*>(module);
dev->device.common.close = hwc_device_close;
dev->device.prepare = hwc_prepare;
dev->device.set = hwc_set;
dev->device.eventControl = hwc_eventControl;
dev->device.blank = hwc_blank;
dev->device.query = hwc_query;
dev->device.registerProcs = hwc_registerProcs;
dev->device.dump = hwc_dump;
dev->device.getDisplayConfigs = hwc_getDisplayConfigs;
dev->device.getDisplayAttributes = hwc_getDisplayAttributes;
*device = &dev->device.common;
status = 0;
}
return status;
}
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