/*
* Copyright (C) 2010 The Android Open Source Project
* Copyright (C) 2012-2014, 2016, 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 DEBUG 0
#include <fcntl.h>
#include <linux/msm_mdp.h>
#include <video/msm_hdmi_modes.h>
#include <linux/fb.h>
#include <sys/ioctl.h>
#include <cutils/properties.h>
#include "hwc_utils.h"
#include "hdmi.h"
#include "overlayUtils.h"
#include "overlay.h"
#include "qd_utils.h"
using namespace android;
using namespace qdutils;
namespace qhwc {
#define UNKNOWN_STRING "unknown"
#define SPD_NAME_LENGTH 16
/* The array gEDIDData contains a list of modes currently
* supported by HDMI and display, and modes that are not
* supported i.e. interlaced modes.
* In order to add support for a new mode, the mode must be
* appended to the end of the array.
*
* Each new entry must contain the following:
* -Mode: a video format defined in msm_hdmi_modes.h
* -Width: x resolution for the mode
* -Height: y resolution for the mode
* -FPS: the frame rate for the mode
* -Mode Order: the priority for the new mode that is used when determining
* the best mode when the HDMI display is connected.
*/
EDIDData gEDIDData [] = {
EDIDData(HDMI_VFRMT_1440x480i60_4_3, 1440, 480, 60, 1),
EDIDData(HDMI_VFRMT_1440x480i60_16_9, 1440, 480, 60, 2),
EDIDData(HDMI_VFRMT_1440x576i50_4_3, 1440, 576, 50, 3),
EDIDData(HDMI_VFRMT_1440x576i50_16_9, 1440, 576, 50, 4),
EDIDData(HDMI_VFRMT_1920x1080i60_16_9, 1920, 1080, 60, 5),
EDIDData(HDMI_VFRMT_640x480p60_4_3, 640, 480, 60, 6),
EDIDData(HDMI_VFRMT_720x480p60_4_3, 720, 480, 60, 7),
EDIDData(HDMI_VFRMT_720x480p60_16_9, 720, 480, 60, 8),
EDIDData(HDMI_VFRMT_720x576p50_4_3, 720, 576, 50, 9),
EDIDData(HDMI_VFRMT_720x576p50_16_9, 720, 576, 50, 10),
EDIDData(HDMI_VFRMT_800x600p60_4_3, 800, 600, 60, 11),
EDIDData(HDMI_VFRMT_848x480p60_16_9, 848, 480, 60, 12),
EDIDData(HDMI_VFRMT_1024x768p60_4_3, 1024, 768, 60, 13),
EDIDData(HDMI_VFRMT_1280x1024p60_5_4, 1280, 1024, 60, 14),
EDIDData(HDMI_VFRMT_1280x720p50_16_9, 1280, 720, 50, 15),
EDIDData(HDMI_VFRMT_1280x720p60_16_9, 1280, 720, 60, 16),
EDIDData(HDMI_VFRMT_1280x800p60_16_10, 1280, 800, 60, 17),
EDIDData(HDMI_VFRMT_1280x960p60_4_3, 1280, 960, 60, 18),
EDIDData(HDMI_VFRMT_1360x768p60_16_9, 1360, 768, 60, 19),
EDIDData(HDMI_VFRMT_1366x768p60_16_10, 1366, 768, 60, 20),
EDIDData(HDMI_VFRMT_1440x900p60_16_10, 1440, 900, 60, 21),
EDIDData(HDMI_VFRMT_1400x1050p60_4_3, 1400, 1050, 60, 22),
EDIDData(HDMI_VFRMT_1680x1050p60_16_10, 1680, 1050, 60, 23),
EDIDData(HDMI_VFRMT_1600x1200p60_4_3, 1600, 1200, 60, 24),
EDIDData(HDMI_VFRMT_1920x1080p24_16_9, 1920, 1080, 24, 25),
EDIDData(HDMI_VFRMT_1920x1080p25_16_9, 1920, 1080, 25, 26),
EDIDData(HDMI_VFRMT_1920x1080p30_16_9, 1920, 1080, 30, 27),
EDIDData(HDMI_VFRMT_1920x1080p50_16_9, 1920, 1080, 50, 28),
EDIDData(HDMI_VFRMT_1920x1080p60_16_9, 1920, 1080, 60, 29),
EDIDData(HDMI_VFRMT_1920x1200p60_16_10, 1920, 1200, 60, 30),
EDIDData(HDMI_VFRMT_2560x1600p60_16_9, 2560, 1600, 60, 31),
EDIDData(HDMI_VFRMT_3840x2160p24_16_9, 3840, 2160, 24, 32),
EDIDData(HDMI_VFRMT_3840x2160p25_16_9, 3840, 2160, 25, 33),
EDIDData(HDMI_VFRMT_3840x2160p30_16_9, 3840, 2160, 30, 34),
EDIDData(HDMI_EVFRMT_4096x2160p24_16_9, 4096, 2160, 24, 35),
};
// Number of modes in gEDIDData
const int gEDIDCount = (sizeof(gEDIDData)/sizeof(gEDIDData)[0]);
int HDMIDisplay::configure() {
if(!openFrameBuffer()) {
ALOGE("%s: Failed to open FB: %d", __FUNCTION__, mFbNum);
return -1;
}
readCEUnderscanInfo();
readResolution();
// TODO: Move this to activate
/* Used for changing the resolution
* getUserMode will get the preferred
* mode set thru adb shell */
mCurrentMode = getUserMode();
if (mCurrentMode == -1) {
//Get the best mode and set
mCurrentMode = getBestMode();
}
setAttributes();
// set system property
property_set("hw.hdmiON", "1");
// Read the system property to determine if downscale feature is enabled.
char value[PROPERTY_VALUE_MAX];
mMDPDownscaleEnabled = false;
if(property_get("sys.hwc.mdp_downscale_enabled", value, "false")
&& !strcmp(value, "true")) {
mMDPDownscaleEnabled = true;
}
return 0;
}
void HDMIDisplay::getAttributes(uint32_t& width, uint32_t& height) {
uint32_t fps = 0;
getAttrForMode(width, height, fps);
}
int HDMIDisplay::teardown() {
closeFrameBuffer();
resetInfo();
// unset system property
property_set("hw.hdmiON", "0");
return 0;
}
HDMIDisplay::HDMIDisplay():mFd(-1),
mCurrentMode(-1), mModeCount(0), mPrimaryWidth(0), mPrimaryHeight(0),
mUnderscanSupported(false)
{
memset(&mVInfo, 0, sizeof(mVInfo));
mDisplayId = HWC_DISPLAY_EXTERNAL;
// Update the display if HDMI is connected as primary
if (isHDMIPrimaryDisplay()) {
mDisplayId = HWC_DISPLAY_PRIMARY;
}
mFbNum = overlay::Overlay::getInstance()->getFbForDpy(mDisplayId);
// disable HPD at start, it will be enabled later
// when the display powers on
// This helps for framework reboot or adb shell stop/start
writeHPDOption(0);
// for HDMI - retreive all the modes supported by the driver
if(mFbNum != -1) {
supported_video_mode_lut =
new msm_hdmi_mode_timing_info[HDMI_VFRMT_MAX];
// Populate the mode table for supported modes
MSM_HDMI_MODES_INIT_TIMINGS(supported_video_mode_lut);
MSM_HDMI_MODES_SET_SUPP_TIMINGS(supported_video_mode_lut,
MSM_HDMI_MODES_ALL);
// Update the Source Product Information
// Vendor Name
setSPDInfo("vendor_name", "ro.product.manufacturer");
// Product Description
setSPDInfo("product_description", "ro.product.name");
}
ALOGD_IF(DEBUG, "%s mDisplayId(%d) mFbNum(%d)",
__FUNCTION__, mDisplayId, mFbNum);
}
/* gets the product manufacturer and product name and writes it
* to the sysfs node, so that the driver can get that information
* Used to show QCOM 8974 instead of Input 1 for example
*/
void HDMIDisplay::setSPDInfo(const char* node, const char* property) {
char info[PROPERTY_VALUE_MAX];
ssize_t err = -1;
int spdFile = openDeviceNode(node, O_RDWR);
if (spdFile >= 0) {
memset(info, 0, sizeof(info));
property_get(property, info, UNKNOWN_STRING);
ALOGD_IF(DEBUG, "In %s: %s = %s",
__FUNCTION__, property, info);
if (strncmp(info, UNKNOWN_STRING, SPD_NAME_LENGTH)) {
err = write(spdFile, info, strlen(info));
if (err <= 0) {
ALOGE("%s: file write failed for '%s'"
"err no = %d", __FUNCTION__, node, errno);
}
} else {
ALOGD_IF(DEBUG, "%s: property_get failed for SPD %s",
__FUNCTION__, node);
}
close(spdFile);
}
}
void HDMIDisplay::setHPD(uint32_t value) {
ALOGD_IF(DEBUG,"HPD enabled=%d", value);
writeHPDOption(value);
}
void HDMIDisplay::setActionSafeDimension(int w, int h) {
ALOGD_IF(DEBUG,"ActionSafe w=%d h=%d", w, h);
char actionsafeWidth[PROPERTY_VALUE_MAX];
char actionsafeHeight[PROPERTY_VALUE_MAX];
snprintf(actionsafeWidth, sizeof(actionsafeWidth), "%d", w);
property_set("persist.sys.actionsafe.width", actionsafeWidth);
snprintf(actionsafeHeight, sizeof(actionsafeHeight), "%d", h);
property_set("persist.sys.actionsafe.height", actionsafeHeight);
}
int HDMIDisplay::getModeCount() const {
ALOGD_IF(DEBUG,"HPD mModeCount=%d", mModeCount);
return mModeCount;
}
void HDMIDisplay::readCEUnderscanInfo()
{
int hdmiScanInfoFile = -1;
ssize_t len = -1;
char scanInfo[17];
char *ce_info_str = NULL;
char *save_ptr;
const char token[] = ", \n";
int ce_info = -1;
memset(scanInfo, 0, sizeof(scanInfo));
hdmiScanInfoFile = openDeviceNode("scan_info", O_RDONLY);
if (hdmiScanInfoFile < 0) {
return;
} else {
len = read(hdmiScanInfoFile, scanInfo, sizeof(scanInfo)-1);
ALOGD("%s: Scan Info string: %s length = %zu",
__FUNCTION__, scanInfo, len);
if (len <= 0) {
close(hdmiScanInfoFile);
ALOGE("%s: Scan Info file empty", __FUNCTION__);
return;
}
scanInfo[len] = '\0'; /* null terminate the string */
close(hdmiScanInfoFile);
}
/*
* The scan_info contains the three fields
* PT - preferred video format
* IT - video format
* CE video format - containing the underscan support information
*/
/* PT */
ce_info_str = strtok_r(scanInfo, token, &save_ptr);
if (ce_info_str) {
/* IT */
ce_info_str = strtok_r(NULL, token, &save_ptr);
if (ce_info_str) {
/* CE */
ce_info_str = strtok_r(NULL, token, &save_ptr);
if (ce_info_str)
ce_info = atoi(ce_info_str);
}
}
if (ce_info_str) {
// ce_info contains the underscan information
if (ce_info == HDMI_SCAN_ALWAYS_UNDERSCANED ||
ce_info == HDMI_SCAN_BOTH_SUPPORTED)
// if TV supported underscan, then driver will always underscan
// hence no need to apply action safe rectangle
mUnderscanSupported = true;
} else {
ALOGE("%s: scan_info string error", __FUNCTION__);
}
// Store underscan support info in a system property
const char* prop = (mUnderscanSupported) ? "1" : "0";
property_set("hw.underscan_supported", prop);
return;
}
HDMIDisplay::~HDMIDisplay()
{
delete [] supported_video_mode_lut;
closeFrameBuffer();
}
/*
* sets the fb_var_screeninfo from the hdmi_mode_timing_info
*/
void setDisplayTiming(struct fb_var_screeninfo &info,
const msm_hdmi_mode_timing_info* mode)
{
info.reserved[0] = 0;
info.reserved[1] = 0;
info.reserved[2] = 0;
#ifndef FB_METADATA_VIDEO_INFO_CODE_SUPPORT
info.reserved[3] = (info.reserved[3] & 0xFFFF) |
(mode->video_format << 16);
#endif
info.xoffset = 0;
info.yoffset = 0;
info.xres = mode->active_h;
info.yres = mode->active_v;
info.pixclock = (mode->pixel_freq)*1000;
info.vmode = mode->interlaced ?
FB_VMODE_INTERLACED : FB_VMODE_NONINTERLACED;
info.right_margin = mode->front_porch_h;
info.hsync_len = mode->pulse_width_h;
info.left_margin = mode->back_porch_h;
info.lower_margin = mode->front_porch_v;
info.vsync_len = mode->pulse_width_v;
info.upper_margin = mode->back_porch_v;
}
int HDMIDisplay::parseResolution(char* edidStr)
{
char delim = ',';
int count = 0;
char *start, *end;
// EDIDs are string delimited by ','
// Ex: 16,4,5,3,32,34,1
// Parse this string to get mode(int)
start = (char*) edidStr;
end = &delim;
while(*end == delim) {
mEDIDModes[count] = (int) strtol(start, &end, 10);
start = end+1;
count++;
}
ALOGD_IF(DEBUG, "In %s: count = %d", __FUNCTION__, count);
for (int i = 0; i < count; i++)
ALOGD_IF(DEBUG, "Mode[%d] = %d", i, mEDIDModes[i]);
return count;
}
bool HDMIDisplay::readResolution()
{
ssize_t len = -1;
char edidStr[128] = {'\0'};
int hdmiEDIDFile = openDeviceNode("edid_modes", O_RDONLY);
if (hdmiEDIDFile < 0) {
return false;
} else {
len = read(hdmiEDIDFile, edidStr, sizeof(edidStr)-1);
ALOGD_IF(DEBUG, "%s: EDID string: %s length = %zu",
__FUNCTION__, edidStr, len);
if (len <= 0) {
ALOGE("%s: edid_modes file empty", __FUNCTION__);
edidStr[0] = '\0';
}
else {
while (len > 1 && isspace(edidStr[len-1])) {
--len;
}
edidStr[len] = '\0';
}
close(hdmiEDIDFile);
}
if(len > 0) {
// Get EDID modes from the EDID strings
mModeCount = parseResolution(edidStr);
ALOGD_IF(DEBUG, "%s: mModeCount = %d", __FUNCTION__,
mModeCount);
}
return (len > 0);
}
bool HDMIDisplay::openFrameBuffer()
{
if (mFd == -1) {
char strDevPath[MAX_SYSFS_FILE_PATH];
snprintf(strDevPath, MAX_SYSFS_FILE_PATH, "/dev/graphics/fb%d", mFbNum);
mFd = open(strDevPath, O_RDWR);
if (mFd < 0)
ALOGE("%s: %s is not available", __FUNCTION__, strDevPath);
}
return (mFd > 0);
}
bool HDMIDisplay::closeFrameBuffer()
{
int ret = 0;
if(mFd >= 0) {
ret = close(mFd);
mFd = -1;
}
return (ret == 0);
}
// clears the vinfo, edid, best modes
void HDMIDisplay::resetInfo()
{
memset(&mVInfo, 0, sizeof(mVInfo));
memset(mEDIDModes, 0, sizeof(mEDIDModes));
mModeCount = 0;
mCurrentMode = -1;
mUnderscanSupported = false;
mXres = 0;
mYres = 0;
mVsyncPeriod = 0;
mMDPScalingMode = false;
// Reset the underscan supported system property
const char* prop = "0";
property_set("hw.underscan_supported", prop);
}
int HDMIDisplay::getModeOrder(int mode)
{
for (int dataIndex = 0; dataIndex < gEDIDCount; dataIndex++) {
if (gEDIDData[dataIndex].mMode == mode) {
return gEDIDData[dataIndex].mModeOrder;
}
}
ALOGE("%s Mode not found: %d", __FUNCTION__, mode);
return -1;
}
/// Returns the user mode set(if any) using adb shell
int HDMIDisplay::getUserMode() {
/* Based on the property set the resolution */
char property_value[PROPERTY_VALUE_MAX];
property_get("hw.hdmi.resolution", property_value, "-1");
int mode = atoi(property_value);
// We dont support interlaced modes
if(isValidMode(mode) && !isInterlacedMode(mode)) {
ALOGD_IF(DEBUG, "%s: setting the HDMI mode = %d", __FUNCTION__, mode);
return mode;
}
return -1;
}
// Get the best mode for the current HD TV
int HDMIDisplay::getBestMode() {
int bestOrder = 0;
int bestMode = HDMI_VFRMT_640x480p60_4_3;
// for all the edid read, get the best mode
for(int i = 0; i < mModeCount; i++) {
int mode = mEDIDModes[i];
int order = getModeOrder(mode);
if (order > bestOrder) {
bestOrder = order;
bestMode = mode;
}
}
return bestMode;
}
inline bool HDMIDisplay::isValidMode(int ID)
{
bool valid = false;
for (int i = 0; i < mModeCount; i++) {
if(ID == mEDIDModes[i]) {
valid = true;
break;
}
}
return valid;
}
// returns true if the mode(ID) is interlaced mode format
bool HDMIDisplay::isInterlacedMode(int ID) {
bool interlaced = false;
switch(ID) {
case HDMI_VFRMT_1440x480i60_4_3:
case HDMI_VFRMT_1440x480i60_16_9:
case HDMI_VFRMT_1440x576i50_4_3:
case HDMI_VFRMT_1440x576i50_16_9:
case HDMI_VFRMT_1920x1080i60_16_9:
interlaced = true;
break;
default:
interlaced = false;
break;
}
return interlaced;
}
// Does a put_vscreen info on the HDMI interface which will update
// the configuration (resolution, timing info) to match mCurrentMode
void HDMIDisplay::activateDisplay()
{
int ret = 0;
ret = ioctl(mFd, FBIOGET_VSCREENINFO, &mVInfo);
if(ret < 0) {
ALOGD("In %s: FBIOGET_VSCREENINFO failed Err Str = %s", __FUNCTION__,
strerror(errno));
}
ALOGD_IF(DEBUG, "%s: GET Info<ID=%d %dx%d (%d,%d,%d),"
"(%d,%d,%d) %dMHz>", __FUNCTION__,
mVInfo.reserved[3], mVInfo.xres, mVInfo.yres,
mVInfo.right_margin, mVInfo.hsync_len, mVInfo.left_margin,
mVInfo.lower_margin, mVInfo.vsync_len, mVInfo.upper_margin,
mVInfo.pixclock/1000/1000);
const struct msm_hdmi_mode_timing_info *mode =
&supported_video_mode_lut[0];
for (unsigned int i = 0; i < HDMI_VFRMT_MAX; ++i) {
const struct msm_hdmi_mode_timing_info *cur =
&supported_video_mode_lut[i];
if (cur->video_format == (uint32_t)mCurrentMode) {
mode = cur;
break;
}
}
setDisplayTiming(mVInfo, mode);
ALOGD_IF(DEBUG, "%s: SET Info<ID=%d => Info<ID=%d %dx %d"
"(%d,%d,%d), (%d,%d,%d) %dMHz>", __FUNCTION__, mCurrentMode,
mode->video_format, mVInfo.xres, mVInfo.yres,
mVInfo.right_margin, mVInfo.hsync_len, mVInfo.left_margin,
mVInfo.lower_margin, mVInfo.vsync_len, mVInfo.upper_margin,
mVInfo.pixclock/1000/1000);
#ifdef FB_METADATA_VIDEO_INFO_CODE_SUPPORT
struct msmfb_metadata metadata;
memset(&metadata, 0 , sizeof(metadata));
metadata.op = metadata_op_vic;
metadata.data.video_info_code = mode->video_format;
if (ioctl(mFd, MSMFB_METADATA_SET, &metadata) == -1) {
ALOGD("In %s: MSMFB_METADATA_SET failed Err Str = %s",
__FUNCTION__, strerror(errno));
}
#endif
mVInfo.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_ALL | FB_ACTIVATE_FORCE;
ret = ioctl(mFd, FBIOPUT_VSCREENINFO, &mVInfo);
if(ret < 0) {
ALOGD("In %s: FBIOPUT_VSCREENINFO failed Err Str = %s",
__FUNCTION__, strerror(errno));
}
}
bool HDMIDisplay::writeHPDOption(int userOption) const
{
bool ret = true;
if(mFbNum != -1) {
int hdmiHPDFile = openDeviceNode("hpd", O_RDWR);
if (hdmiHPDFile >= 0) {
ssize_t err = -1;
ALOGD_IF(DEBUG, "%s: option = %d",
__FUNCTION__, userOption);
if(userOption)
err = write(hdmiHPDFile, "1", 2);
else
err = write(hdmiHPDFile, "0" , 2);
if (err <= 0) {
ALOGE("%s: file write failed 'hpd'", __FUNCTION__);
ret = false;
}
close(hdmiHPDFile);
}
}
return ret;
}
void HDMIDisplay::setAttributes() {
uint32_t fps = 0;
// Always set dpyAttr res to mVInfo res
getAttrForMode(mXres, mYres, fps);
mMDPScalingMode = false;
if(overlay::Overlay::getInstance()->isUIScalingOnExternalSupported()
&& mMDPDownscaleEnabled) {
// if primary resolution is more than the hdmi resolution
// configure dpy attr to primary resolution and set MDP
// scaling mode
// Restrict this upto 1080p resolution max, if target does not
// support source split feature.
uint32_t primaryArea = mPrimaryWidth * mPrimaryHeight;
if(((primaryArea) > (mXres * mYres)) &&
(((primaryArea) <= SUPPORTED_DOWNSCALE_AREA) ||
qdutils::MDPVersion::getInstance().isSrcSplit())) {
// tmpW and tmpH will hold the primary dimensions before we
// update the aspect ratio if necessary.
int tmpW = mPrimaryWidth;
int tmpH = mPrimaryHeight;
// HDMI is always in landscape, so always assign the higher
// dimension to hdmi's xres
if(mPrimaryHeight > mPrimaryWidth) {
tmpW = mPrimaryHeight;
tmpH = mPrimaryWidth;
}
// The aspect ratios of the external and primary displays
// can be different. As a result, directly assigning primary
// resolution could lead to an incorrect final image.
// We get around this by calculating a new resolution by
// keeping aspect ratio intact.
hwc_rect r = {0, 0, 0, 0};
qdutils::getAspectRatioPosition(tmpW, tmpH, mXres, mYres, r);
uint32_t newExtW = r.right - r.left;
uint32_t newExtH = r.bottom - r.top;
uint32_t alignedExtW;
uint32_t alignedExtH;
// On 8994 and below targets MDP supports only 4X downscaling,
// Restricting selected external resolution to be exactly 4X
// greater resolution than actual external resolution
uint32_t maxMDPDownScale =
qdutils::MDPVersion::getInstance().getMaxMDPDownscale();
if((mXres * mYres * maxMDPDownScale) < (newExtW * newExtH)) {
float upScaleFactor = (float)maxMDPDownScale / 2.0f;
newExtW = (int)((float)mXres * upScaleFactor);
newExtH = (int)((float)mYres * upScaleFactor);
}
// Align it down so that the new aligned resolution does not
// exceed the maxMDPDownscale factor
alignedExtW = overlay::utils::aligndown(newExtW, 4);
alignedExtH = overlay::utils::aligndown(newExtH, 4);
mXres = alignedExtW;
mYres = alignedExtH;
// Set External Display MDP Downscale mode indicator
mMDPScalingMode = true;
}
}
ALOGD_IF(DEBUG_MDPDOWNSCALE, "Selected external resolution [%d X %d] "
"maxMDPDownScale %d mMDPScalingMode %d srcSplitEnabled %d "
"MDPDownscale feature %d",
mXres, mYres,
qdutils::MDPVersion::getInstance().getMaxMDPDownscale(),
mMDPScalingMode, qdutils::MDPVersion::getInstance().isSrcSplit(),
mMDPDownscaleEnabled);
mVsyncPeriod = (int) 1000000000l / fps;
ALOGD_IF(DEBUG, "%s xres=%d, yres=%d", __FUNCTION__, mXres, mYres);
}
void HDMIDisplay::getAttrForMode(uint32_t& width, uint32_t& height,
uint32_t& fps) {
for (int dataIndex = 0; dataIndex < gEDIDCount; dataIndex++) {
if (gEDIDData[dataIndex].mMode == mCurrentMode) {
width = gEDIDData[dataIndex].mWidth;
height = gEDIDData[dataIndex].mHeight;
fps = gEDIDData[dataIndex].mFps;
return;
}
}
ALOGE("%s Unable to get attributes for %d", __FUNCTION__, mCurrentMode);
}
/* returns the fd related to the node specified*/
int HDMIDisplay::openDeviceNode(const char* node, int fileMode) const {
char sysFsFilePath[MAX_SYSFS_FILE_PATH];
memset(sysFsFilePath, 0, sizeof(sysFsFilePath));
snprintf(sysFsFilePath , sizeof(sysFsFilePath),
"/sys/devices/virtual/graphics/fb%d/%s",
mFbNum, node);
int fd = open(sysFsFilePath, fileMode, 0);
if (fd < 0) {
ALOGE("%s: file '%s' not found : ret = %d err str: %s",
__FUNCTION__, sysFsFilePath, fd, strerror(errno));
}
return fd;
}
bool HDMIDisplay::isHDMIPrimaryDisplay() {
int hdmiNode = qdutils::getHDMINode();
return (hdmiNode == HWC_DISPLAY_PRIMARY);
}
int HDMIDisplay::getConnectedState() {
int ret = -1;
int mFbNum = qdutils::getHDMINode();
int connectedNode = openDeviceNode("connected", O_RDONLY);
if(connectedNode >= 0) {
char opStr[4];
ssize_t bytesRead = read(connectedNode, opStr, sizeof(opStr) - 1);
if(bytesRead > 0) {
opStr[bytesRead] = '\0';
ret = atoi(opStr);
ALOGD_IF(DEBUG, "%s: Read %d from connected", __FUNCTION__, ret);
} else if(bytesRead == 0) {
ALOGE("%s: HDMI connected node empty", __FUNCTION__);
} else {
ALOGE("%s: Read from HDMI connected node failed with error %s",
__FUNCTION__, strerror(errno));
}
close(connectedNode);
} else {
ALOGD("%s: /sys/class/graphics/fb%d/connected could not be opened : %s",
__FUNCTION__, mFbNum, strerror(errno));
}
return ret;
}
void HDMIDisplay::setPrimaryAttributes(uint32_t primaryWidth,
uint32_t primaryHeight) {
mPrimaryHeight = primaryHeight;
mPrimaryWidth = primaryWidth;
}
};