bc05ef0581
Metadata ioctl approach has limitations with respect to adding new capabilities in MDSS driver. Use sysfs node mechanism to obtain MDSS capabilities. (sysfs node: /sys/class/graphics/fb0/mdp/caps) Change-Id: Id7fe683c85b3acf182920d28abf62e9826ff1161
252 lines
8.5 KiB
C++
252 lines
8.5 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 <fcntl.h>
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#include <sys/ioctl.h>
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#include <linux/fb.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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int fb_fd = open("/dev/graphics/fb0", O_RDWR);
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char panel_type = 0;
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struct fb_fix_screeninfo fb_finfo;
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mMDPVersion = MDP_V_UNKNOWN;
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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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//TODO get this from driver, default for A-fam to 8
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mMDPDownscale = 8;
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mFd = fb_fd;
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if (ioctl(fb_fd, FBIOGET_FSCREENINFO, &fb_finfo) < 0) {
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ALOGE("FBIOGET_FSCREENINFO failed");
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} else {
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if(!strncmp(fb_finfo.id, "msmfb", 5)) {
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char str_ver[4] = { 0 };
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memcpy(str_ver, &fb_finfo.id[5], 3);
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str_ver[3] = '\0';
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mMDPVersion = atoi(str_ver);
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//Normalize MDP version to ease comparison.
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//This is needed only because
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//MDP 3.0.3 reports value as 303 which
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//is more than all the others
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if (mMDPVersion < 100)
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mMDPVersion *= 10;
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mRGBPipes = mVGPipes = 2;
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} else if (!strncmp(fb_finfo.id, "mdssfb", 6)) {
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mMDPVersion = MDSS_V5;
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if(!updateSysFsInfo()) {
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ALOGE("Unable to read updateSysFsInfo");
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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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}
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/* Assumes panel type is 2nd element in '_' delimited id string */
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char * ptype = strstr(fb_finfo.id, "_");
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if (!ptype || (*(++ptype) == '\0')) {
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ALOGE("Invalid framebuffer info string: %s", fb_finfo.id);
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ptype = fb_finfo.id;
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}
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panel_type = *ptype;
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}
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mPanelType = panel_type;
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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(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(rght, "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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}
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if(fp)
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fclose(fp);
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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 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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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_103) {
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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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