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
36namespace android {
37ANDROID_SINGLETON_STATIC_INSTANCE(qdutils::MDPVersion);
38}
39
40namespace qdutils {
41
42MDPVersion::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