1 /*
2 * Copyright (c) 2012, Code Aurora Forum. 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 Code Aurora Forum, Inc. 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 <linux/fb.h>
32 #include "mdp_version.h"
33
34 ANDROID_SINGLETON_STATIC_INSTANCE(qdutils::MDPVersion);
35 namespace qdutils {
36
MDPVersion()37 MDPVersion::MDPVersion()
38 {
39 int fb_fd = open("/dev/graphics/fb0", O_RDWR);
40 int mdp_version = MDP_V_UNKNOWN;
41 char panel_type = 0;
42 struct fb_fix_screeninfo fb_finfo;
43 if (ioctl(fb_fd, FBIOGET_FSCREENINFO, &fb_finfo) < 0) {
44 ALOGE("FBIOGET_FSCREENINFO failed");
45 mdp_version = MDP_V_UNKNOWN;
46 } else {
47 if(!strncmp(fb_finfo.id, "msmfb", 5)) {
48 char str_ver[4] = { 0 };
49 memcpy(str_ver, &fb_finfo.id[5], 3);
50 str_ver[3] = '\0';
51 mdp_version = atoi(str_ver);
52
53 //Normalize MDP version to ease comparison.
54 //This is needed only because
55 //MDP 3.0.3 reports value as 303 which
56 //is more than all the others
57 if (mdp_version < 100)
58 mdp_version *= 10;
59
60 } else if (!strncmp(fb_finfo.id, "mdssfb", 6)) {
61 mdp_version = MDSS_V5;
62 } else {
63 mdp_version = MDP_V_UNKNOWN;
64 }
65 int len = strlen("msmfbXX_");
66 if (mdp_version == MDP_V3_0_3)
67 len++;
68 panel_type = fb_finfo.id[len];
69
70 }
71 close(fb_fd);
72 mMDPVersion = mdp_version;
73 mHasOverlay = false;
74 if((mMDPVersion >= MDP_V4_0) || (mMDPVersion == MDP_V_UNKNOWN))
75 mHasOverlay = true;
76 mPanelType = panel_type;
77 }
78 }; //namespace qdutils
79
80