/* * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved. * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of The Linux Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include <cutils/log.h> #include <fcntl.h> #include <sys/ioctl.h> #include <linux/fb.h> #include <linux/msm_mdp.h> #include "mdp_version.h" ANDROID_SINGLETON_STATIC_INSTANCE(qdutils::MDPVersion); namespace qdutils { MDPVersion::MDPVersion() { int fb_fd = open("/dev/graphics/fb0", O_RDWR); int mdp_version = MDP_V_UNKNOWN; char panel_type = 0; struct fb_fix_screeninfo fb_finfo; mMdpRev = 0; mRGBPipes = 0; mVGPipes = 0; mDMAPipes = 0; mFeatures = 0; //TODO get this from driver, default for A-fam to 8 mMDPDownscale = 8; mFd = fb_fd; if (ioctl(fb_fd, FBIOGET_FSCREENINFO, &fb_finfo) < 0) { ALOGE("FBIOGET_FSCREENINFO failed"); mdp_version = MDP_V_UNKNOWN; } else { if(!strncmp(fb_finfo.id, "msmfb", 5)) { char str_ver[4] = { 0 }; memcpy(str_ver, &fb_finfo.id[5], 3); str_ver[3] = '\0'; mdp_version = atoi(str_ver); //Normalize MDP version to ease comparison. //This is needed only because //MDP 3.0.3 reports value as 303 which //is more than all the others if (mdp_version < 100) mdp_version *= 10; mRGBPipes = mVGPipes = 2; } else if (!strncmp(fb_finfo.id, "mdssfb", 6)) { mdp_version = MDSS_V5; #ifdef MDSS_TARGET struct msmfb_metadata metadata; memset(&metadata, 0 , sizeof(metadata)); metadata.op = metadata_op_get_caps; if (ioctl(fb_fd, MSMFB_METADATA_GET, &metadata) == -1) { ALOGE("Error retrieving MDP revision and pipes info"); mdp_version = MDP_V_UNKNOWN; } else { mMdpRev = metadata.data.caps.mdp_rev; mRGBPipes = metadata.data.caps.rgb_pipes; mVGPipes = metadata.data.caps.vig_pipes; mDMAPipes = metadata.data.caps.dma_pipes; mFeatures = metadata.data.caps.features; if (metadata.data.caps.mdp_rev == MDP_V3_0_4){ mdp_version = MDP_V3_0_4; } } #endif } else { mdp_version = MDP_V_UNKNOWN; } /* Assumes panel type is 2nd element in '_' delimited id string */ char * ptype = strstr(fb_finfo.id, "_"); if (!ptype || (*(++ptype) == '\0')) { ALOGE("Invalid framebuffer info string: %s", fb_finfo.id); ptype = fb_finfo.id; } panel_type = *ptype; } mPanelType = panel_type; mMDPVersion = mdp_version; mHasOverlay = false; if((mMDPVersion >= MDP_V4_0) || (mMDPVersion == MDP_V_UNKNOWN) || (mMDPVersion == MDP_V3_0_4)) mHasOverlay = true; if(mMDPVersion >= MDSS_V5) { //TODO get this from driver mMDPDownscale = 4; char split[64]; FILE* fp = fopen("/sys/class/graphics/fb0/msm_fb_split", "r"); if(fp){ //Format "left right" space as delimiter if(fread(split, sizeof(char), 64, fp)) { mSplit.mLeft = atoi(split); ALOGI_IF(mSplit.mLeft, "Left Split=%d", mSplit.mLeft); char *rght = strpbrk(split, " "); if(rght) mSplit.mRight = atoi(rght + 1); ALOGI_IF(rght, "Right Split=%d", mSplit.mRight); } } else { ALOGE("Failed to open mdss_fb_split node"); } if(fp) fclose(fp); } } MDPVersion::~MDPVersion() { close(mFd); } bool MDPVersion::supportsDecimation() { return mFeatures & MDP_DECIMATION_EN; } uint32_t MDPVersion::getMaxMDPDownscale() { return mMDPDownscale; } bool MDPVersion::supportsBWC() { // BWC - Bandwidth Compression return (mFeatures & MDP_BWC_EN); } bool MDPVersion::is8x26() { // check for 8x26 variants // chip variants have same major number and minor numbers usually vary // for e.g., MDSS_MDP_HW_REV_101 is 0x10010000 // 1001 - major number // 0000 - minor number // 8x26 v1 minor number is 0000 // v2 minor number is 0001 etc.. if( mMdpRev >= MDSS_MDP_HW_REV_101 && mMdpRev < MDSS_MDP_HW_REV_102) { return true; } return false; } }; //namespace qdutils