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
MDPVersion()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