| /* |
| * 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" |
| |
| #define DEBUG 0 |
| |
| ANDROID_SINGLETON_STATIC_INSTANCE(qdutils::MDPVersion); |
| namespace qdutils { |
| |
| #define TOKEN_PARAMS_DELIM "=" |
| |
| MDPVersion::MDPVersion() |
| { |
| int fb_fd = open("/dev/graphics/fb0", O_RDWR); |
| char panel_type = 0; |
| struct fb_fix_screeninfo fb_finfo; |
| |
| mMDPVersion = MDP_V_UNKNOWN; |
| mMdpRev = 0; |
| mRGBPipes = 0; |
| mVGPipes = 0; |
| mDMAPipes = 0; |
| mFeatures = 0; |
| mMDPUpscale = 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"); |
| } 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'; |
| mMDPVersion = 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 (mMDPVersion < 100) |
| mMDPVersion *= 10; |
| |
| mRGBPipes = mVGPipes = 2; |
| |
| } else if (!strncmp(fb_finfo.id, "mdssfb", 6)) { |
| mMDPVersion = MDSS_V5; |
| if(!updateSysFsInfo()) { |
| ALOGE("Unable to read updateSysFsInfo"); |
| } |
| if (mMdpRev == MDP_V3_0_4){ |
| mMDPVersion = MDP_V3_0_4; |
| } |
| } |
| |
| /* 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; |
| mHasOverlay = false; |
| if((mMDPVersion >= MDP_V4_0) || |
| (mMDPVersion == MDP_V_UNKNOWN) || |
| (mMDPVersion == MDP_V3_0_4)) |
| mHasOverlay = true; |
| if(mMDPVersion >= MDSS_V5) { |
| char split[64] = {0}; |
| 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); |
| } |
| |
| int MDPVersion::tokenizeParams(char *inputParams, const char *delim, |
| char* tokenStr[], int *idx) { |
| char *tmp_token = NULL; |
| char *temp_ptr; |
| int ret = 0, index = 0; |
| if (!inputParams) { |
| return -1; |
| } |
| tmp_token = strtok_r(inputParams, delim, &temp_ptr); |
| while (tmp_token != NULL) { |
| tokenStr[index++] = tmp_token; |
| tmp_token = strtok_r(NULL, " ", &temp_ptr); |
| } |
| *idx = index; |
| return 0; |
| } |
| |
| |
| // This function reads the sysfs node to read MDP capabilities |
| // and parses and updates information accordingly. |
| bool MDPVersion::updateSysFsInfo() { |
| FILE *sysfsFd; |
| size_t len = 0; |
| ssize_t read; |
| char *line = NULL; |
| char sysfsPath[255]; |
| memset(sysfsPath, 0, sizeof(sysfsPath)); |
| snprintf(sysfsPath , sizeof(sysfsPath), |
| "/sys/class/graphics/fb0/mdp/caps"); |
| |
| sysfsFd = fopen(sysfsPath, "rb"); |
| |
| if (sysfsFd == NULL) { |
| ALOGE("%s: sysFsFile file '%s' not found", |
| __FUNCTION__, sysfsPath); |
| return false; |
| } else { |
| while((read = getline(&line, &len, sysfsFd)) != -1) { |
| int index=0; |
| char *tokens[10]; |
| memset(tokens, 0, sizeof(tokens)); |
| |
| // parse the line and update information accordingly |
| if(!tokenizeParams(line, TOKEN_PARAMS_DELIM, tokens, &index)) { |
| if(!strncmp(tokens[0], "hw_rev", strlen("hw_rev"))) { |
| mMdpRev = atoi(tokens[1]); |
| } |
| else if(!strncmp(tokens[0], "rgb_pipes", strlen("rgb_pipes"))) { |
| mRGBPipes = atoi(tokens[1]); |
| } |
| else if(!strncmp(tokens[0], "vig_pipes", strlen("vig_pipes"))) { |
| mVGPipes = atoi(tokens[1]); |
| } |
| else if(!strncmp(tokens[0], "dma_pipes", strlen("dma_pipes"))) { |
| mDMAPipes = atoi(tokens[1]); |
| } |
| else if(!strncmp(tokens[0], "max_downscale_ratio", |
| strlen("max_downscale_ratio"))) { |
| mMDPDownscale = atoi(tokens[1]); |
| } |
| else if(!strncmp(tokens[0], "max_upscale_ratio", |
| strlen("max_upscale_ratio"))) { |
| mMDPUpscale = atoi(tokens[1]); |
| } |
| else if(!strncmp(tokens[0], "features", strlen("features"))) { |
| for(int i=1; i<index;i++) { |
| if(!strncmp(tokens[i], "bwc", strlen("bwc"))) { |
| mFeatures |= MDP_BWC_EN; |
| } |
| else if(!strncmp(tokens[i], "decimation", |
| strlen("decimation"))) { |
| mFeatures |= MDP_DECIMATION_EN; |
| } |
| } |
| } |
| } |
| free(line); |
| line = NULL; |
| } |
| fclose(sysfsFd); |
| } |
| ALOGD_IF(DEBUG, "%s: mMDPVersion: %d mMdpRev: %x mRGBPipes:%d," |
| "mVGPipes:%d", __FUNCTION__, mMDPVersion, mMdpRev, |
| mRGBPipes, mVGPipes); |
| ALOGD_IF(DEBUG, "%s:mDMAPipes:%d \t mMDPDownscale:%d, mFeatures:%d", |
| __FUNCTION__, mDMAPipes, mMDPDownscale, mFeatures); |
| return true; |
| } |
| |
| 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; |
| } |
| |
| bool MDPVersion::is8x74v2() { |
| if( mMdpRev >= MDSS_MDP_HW_REV_102 && mMdpRev < MDSS_MDP_HW_REV_103) { |
| return true; |
| } |
| return false; |
| } |
| |
| }; //namespace qdutils |
| |