| /* |
| * Copyright (c) 2012, Code Aurora Forum. 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 Code Aurora Forum, Inc. 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 <linux/fb.h> |
| #include "mdp_version.h" |
| |
| ANDROID_SINGLETON_STATIC_INSTANCE(qdutils::MDPVersion); |
| namespace qdutils { |
| |
| static int getMDPVersionFromFB() |
| { |
| int fb_fd = open("/dev/graphics/fb0", O_RDWR); |
| int mdp_version = MDP_V_UNKNOWN; |
| struct fb_fix_screeninfo fb_finfo; |
| 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; |
| |
| } else if (!strncmp(fb_finfo.id, "mdssfb", 6)) { |
| mdp_version = MDSS_V5; |
| } else { |
| mdp_version = MDP_V_UNKNOWN; |
| } |
| } |
| close(fb_fd); |
| return mdp_version; |
| } |
| |
| MDPVersion::MDPVersion() |
| { |
| mMDPVersion = getMDPVersionFromFB(); |
| if((mMDPVersion >= MDP_V4_0) || (mMDPVersion == MDP_V_UNKNOWN)) |
| mHasOverlay = true; |
| else |
| mHasOverlay = false; |
| } |
| }; //namespace qdutils |
| |