1 /* 2 * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved. 3 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * * Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * * Redistributions in binary form must reproduce the above 10 * copyright notice, this list of conditions and the following 11 * disclaimer in the documentation and/or other materials provided 12 * with the distribution. 13 * * Neither the name of The Linux Foundation nor the names of its 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 26 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 #include <cutils/log.h> 30 #include <fcntl.h> 31 #include <sys/ioctl.h> 32 #include <linux/fb.h> 33 #include <linux/msm_mdp.h> 34 #include "mdp_version.h" 35 36 namespace android { 37 ANDROID_SINGLETON_STATIC_INSTANCE(qdutils::MDPVersion); 38 } 39 40 namespace qdutils { 41 42 MDPVersion::MDPVersion() 43 { 44 int fb_fd = open("/dev/graphics/fb0", O_RDWR); 45 int mdp_version = MDP_V_UNKNOWN; 46 char panel_type = 0; 47 struct fb_fix_screeninfo fb_finfo; 48 49 mMdpRev = 0; 50 mRGBPipes = mVGPipes = 0; 51 mDMAPipes = 0; 52 53 if (ioctl(fb_fd, FBIOGET_FSCREENINFO, &fb_finfo) < 0) { 54 ALOGE("FBIOGET_FSCREENINFO failed"); 55 mdp_version = MDP_V_UNKNOWN; 56 } else { 57 if(!strncmp(fb_finfo.id, "msmfb", 5)) { 58 char str_ver[4] = { 0 }; 59 memcpy(str_ver, &fb_finfo.id[5], 3); 60 str_ver[3] = '\0'; 61 mdp_version = atoi(str_ver); 62 63 //Normalize MDP version to ease comparison. 64 //This is needed only because 65 //MDP 3.0.3 reports value as 303 which 66 //is more than all the others 67 if (mdp_version < 100) 68 mdp_version *= 10; 69 70 mRGBPipes = mVGPipes = 2; 71 72 } else if (!strncmp(fb_finfo.id, "mdssfb", 6)) { 73 mdp_version = MDSS_V5; 74 #ifdef MDSS_TARGET 75 struct msmfb_metadata metadata; 76 memset(&metadata, 0 , sizeof(metadata)); 77 metadata.op = metadata_op_get_caps; 78 if (ioctl(fb_fd, MSMFB_METADATA_GET, &metadata) == -1) { 79 ALOGE("Error retrieving MDP revision and pipes info"); 80 mdp_version = MDP_V_UNKNOWN; 81 } else { 82 mMdpRev = metadata.data.caps.mdp_rev; 83 mRGBPipes = metadata.data.caps.rgb_pipes; 84 mVGPipes = metadata.data.caps.vig_pipes; 85 mDMAPipes = metadata.data.caps.dma_pipes; 86 } 87 #endif 88 } else { 89 mdp_version = MDP_V_UNKNOWN; 90 } 91 int len = strlen("msmfbXX_"); 92 if (mdp_version == MDP_V3_0_3) 93 len++; 94 panel_type = fb_finfo.id[len]; 95 96 } 97 close(fb_fd); 98 mMDPVersion = mdp_version; 99 mHasOverlay = false; 100 if((mMDPVersion >= MDP_V4_0) || (mMDPVersion == MDP_V_UNKNOWN)) 101 mHasOverlay = true; 102 mPanelType = panel_type; 103 } 104 }; //namespace qdutils 105 106
