c65ec6186a
1. MDPVersion class can query the capabilities using sysfs node. Since sysfs node can be read with out opening framebuffer, it is no longer required. 2. New internal functions updatePanelInfo, updateSplitInfo are added. Change-Id: If506e600fb14401d8bf2361aac969c7e29a5d50a
266 lines
9.0 KiB
C++
266 lines
9.0 KiB
C++
/*
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* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of The Linux Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <cutils/log.h>
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#include <linux/msm_mdp.h>
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#include "mdp_version.h"
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#define DEBUG 0
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ANDROID_SINGLETON_STATIC_INSTANCE(qdutils::MDPVersion);
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namespace qdutils {
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#define TOKEN_PARAMS_DELIM "="
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MDPVersion::MDPVersion()
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{
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mMDPVersion = MDSS_V5;
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mMdpRev = 0;
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mRGBPipes = 0;
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mVGPipes = 0;
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mDMAPipes = 0;
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mFeatures = 0;
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mMDPUpscale = 0;
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mMDPDownscale = 0;
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mPanelType = NO_PANEL;
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if(!updatePanelInfo()) {
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ALOGE("Unable to read Primary Panel Information");
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}
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if(!updateSysFsInfo()) {
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ALOGE("Unable to read display sysfs node");
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}
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if (mMdpRev == MDP_V3_0_4){
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mMDPVersion = MDP_V3_0_4;
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}
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mHasOverlay = false;
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if((mMDPVersion >= MDP_V4_0) ||
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(mMDPVersion == MDP_V_UNKNOWN) ||
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(mMDPVersion == MDP_V3_0_4))
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mHasOverlay = true;
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if(!updateSplitInfo()) {
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ALOGE("Unable to read display split node");
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}
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}
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MDPVersion::~MDPVersion() {
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close(mFd);
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}
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int MDPVersion::tokenizeParams(char *inputParams, const char *delim,
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char* tokenStr[], int *idx) {
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char *tmp_token = NULL;
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char *temp_ptr;
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int ret = 0, index = 0;
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if (!inputParams) {
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return -1;
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}
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tmp_token = strtok_r(inputParams, delim, &temp_ptr);
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while (tmp_token != NULL) {
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tokenStr[index++] = tmp_token;
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tmp_token = strtok_r(NULL, " ", &temp_ptr);
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}
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*idx = index;
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return 0;
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}
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// This function reads the sysfs node to read the primary panel type
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// and updates information accordingly
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bool MDPVersion::updatePanelInfo() {
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FILE *displayDeviceFP = NULL;
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const int MAX_FRAME_BUFFER_NAME_SIZE = 128;
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char fbType[MAX_FRAME_BUFFER_NAME_SIZE];
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const char *strCmdPanel = "mipi dsi cmd panel";
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const char *strVideoPanel = "mipi dsi video panel";
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const char *strLVDSPanel = "lvds panel";
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const char *strEDPPanel = "edp panel";
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displayDeviceFP = fopen("/sys/class/graphics/fb0/msm_fb_type", "r");
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if(displayDeviceFP){
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fread(fbType, sizeof(char), MAX_FRAME_BUFFER_NAME_SIZE,
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displayDeviceFP);
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if(strncmp(fbType, strCmdPanel, strlen(strCmdPanel)) == 0) {
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mPanelType = MIPI_CMD_PANEL;
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}
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else if(strncmp(fbType, strVideoPanel, strlen(strVideoPanel)) == 0) {
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mPanelType = MIPI_VIDEO_PANEL;
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}
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else if(strncmp(fbType, strLVDSPanel, strlen(strLVDSPanel)) == 0) {
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mPanelType = LVDS_PANEL;
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}
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else if(strncmp(fbType, strEDPPanel, strlen(strEDPPanel)) == 0) {
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mPanelType = EDP_PANEL;
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}
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fclose(displayDeviceFP);
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return true;
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}else {
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return false;
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}
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}
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// This function reads the sysfs node to read MDP capabilities
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// and parses and updates information accordingly.
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bool MDPVersion::updateSysFsInfo() {
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FILE *sysfsFd;
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size_t len = 0;
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ssize_t read;
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char *line = NULL;
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char sysfsPath[255];
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memset(sysfsPath, 0, sizeof(sysfsPath));
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snprintf(sysfsPath , sizeof(sysfsPath),
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"/sys/class/graphics/fb0/mdp/caps");
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sysfsFd = fopen(sysfsPath, "rb");
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if (sysfsFd == NULL) {
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ALOGE("%s: sysFsFile file '%s' not found",
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__FUNCTION__, sysfsPath);
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return false;
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} else {
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while((read = getline(&line, &len, sysfsFd)) != -1) {
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int index=0;
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char *tokens[10];
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memset(tokens, 0, sizeof(tokens));
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// parse the line and update information accordingly
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if(!tokenizeParams(line, TOKEN_PARAMS_DELIM, tokens, &index)) {
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if(!strncmp(tokens[0], "hw_rev", strlen("hw_rev"))) {
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mMdpRev = atoi(tokens[1]);
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}
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else if(!strncmp(tokens[0], "rgb_pipes", strlen("rgb_pipes"))) {
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mRGBPipes = atoi(tokens[1]);
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}
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else if(!strncmp(tokens[0], "vig_pipes", strlen("vig_pipes"))) {
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mVGPipes = atoi(tokens[1]);
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}
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else if(!strncmp(tokens[0], "dma_pipes", strlen("dma_pipes"))) {
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mDMAPipes = atoi(tokens[1]);
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}
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else if(!strncmp(tokens[0], "max_downscale_ratio",
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strlen("max_downscale_ratio"))) {
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mMDPDownscale = atoi(tokens[1]);
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}
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else if(!strncmp(tokens[0], "max_upscale_ratio",
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strlen("max_upscale_ratio"))) {
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mMDPUpscale = atoi(tokens[1]);
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}
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else if(!strncmp(tokens[0], "features", strlen("features"))) {
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for(int i=1; i<index;i++) {
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if(!strncmp(tokens[i], "bwc", strlen("bwc"))) {
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mFeatures |= MDP_BWC_EN;
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}
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else if(!strncmp(tokens[i], "decimation",
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strlen("decimation"))) {
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mFeatures |= MDP_DECIMATION_EN;
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}
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}
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}
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}
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free(line);
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line = NULL;
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}
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fclose(sysfsFd);
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}
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ALOGD_IF(DEBUG, "%s: mMDPVersion: %d mMdpRev: %x mRGBPipes:%d,"
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"mVGPipes:%d", __FUNCTION__, mMDPVersion, mMdpRev,
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mRGBPipes, mVGPipes);
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ALOGD_IF(DEBUG, "%s:mDMAPipes:%d \t mMDPDownscale:%d, mFeatures:%d",
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__FUNCTION__, mDMAPipes, mMDPDownscale, mFeatures);
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return true;
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}
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// This function reads the sysfs node to read MDP capabilities
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// and parses and updates information accordingly.
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bool MDPVersion::updateSplitInfo() {
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if(mMDPVersion >= MDSS_V5) {
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char split[64] = {0};
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FILE* fp = fopen("/sys/class/graphics/fb0/msm_fb_split", "r");
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if(fp){
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//Format "left right" space as delimiter
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if(fread(split, sizeof(char), 64, fp)) {
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mSplit.mLeft = atoi(split);
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ALOGI_IF(mSplit.mLeft, "Left Split=%d", mSplit.mLeft);
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char *rght = strpbrk(split, " ");
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if(rght)
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mSplit.mRight = atoi(rght + 1);
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ALOGI_IF(mSplit.mRight, "Right Split=%d", mSplit.mRight);
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}
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} else {
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ALOGE("Failed to open mdss_fb_split node");
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return false;
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}
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if(fp)
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fclose(fp);
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}
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return true;
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}
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bool MDPVersion::supportsDecimation() {
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return mFeatures & MDP_DECIMATION_EN;
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}
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uint32_t MDPVersion::getMaxMDPDownscale() {
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return mMDPDownscale;
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}
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bool MDPVersion::supportsBWC() {
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// BWC - Bandwidth Compression
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return (mFeatures & MDP_BWC_EN);
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}
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bool MDPVersion::is8x26() {
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// check for 8x26 variants
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// chip variants have same major number and minor numbers usually vary
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// for e.g., MDSS_MDP_HW_REV_101 is 0x10010000
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// 1001 - major number
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// 0000 - minor number
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// 8x26 v1 minor number is 0000
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// v2 minor number is 0001 etc..
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if( mMdpRev >= MDSS_MDP_HW_REV_101 && mMdpRev < MDSS_MDP_HW_REV_102) {
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return true;
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}
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return false;
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}
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bool MDPVersion::is8x74v2() {
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if( mMdpRev >= MDSS_MDP_HW_REV_102 && mMdpRev < MDSS_MDP_HW_REV_200) {
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return true;
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}
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return false;
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}
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bool MDPVersion::is8x92() {
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if( mMdpRev >= MDSS_MDP_HW_REV_200 && mMdpRev < MDSS_MDP_HW_REV_206) {
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return true;
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}
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return false;
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}
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}; //namespace qdutils
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