| Uday Kiran Pichika | 2d3a307 | 2018-06-04 16:42:13 +0530 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2013, 2018 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 | |
| 30 | #include <unistd.h> |
| 31 | #include <gralloc_priv.h> |
| 32 | #include "qd_utils.h" |
| 33 | |
| 34 | static const int kFBNodeMax = 4; |
| 35 | namespace qdutils { |
| 36 | |
| 37 | static int getExternalNode(const char *type) { |
| 38 | FILE *displayDeviceFP = NULL; |
| 39 | char fbType[MAX_FRAME_BUFFER_NAME_SIZE]; |
| 40 | char msmFbTypePath[MAX_FRAME_BUFFER_NAME_SIZE]; |
| 41 | int j = 0; |
| 42 | |
| 43 | for(j = 0; j < kFBNodeMax; j++) { |
| 44 | snprintf (msmFbTypePath, sizeof(msmFbTypePath), |
| 45 | "/sys/devices/virtual/graphics/fb%d/msm_fb_type", j); |
| 46 | displayDeviceFP = fopen(msmFbTypePath, "r"); |
| 47 | if(displayDeviceFP) { |
| 48 | fread(fbType, sizeof(char), MAX_FRAME_BUFFER_NAME_SIZE, |
| 49 | displayDeviceFP); |
| 50 | if(strncmp(fbType, type, strlen(type)) == 0) { |
| 51 | ALOGD("%s: %s is at fb%d", __func__, type, j); |
| 52 | fclose(displayDeviceFP); |
| 53 | break; |
| 54 | } |
| 55 | fclose(displayDeviceFP); |
| 56 | } else { |
| 57 | ALOGE("%s: Failed to open fb node %s", __func__, msmFbTypePath); |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | if (j < kFBNodeMax) |
| 62 | return j; |
| 63 | else |
| 64 | ALOGE("%s: Failed to find %s node", __func__, type); |
| 65 | |
| 66 | return -1; |
| 67 | } |
| 68 | |
| 69 | int getHDMINode(void) { |
| 70 | return getExternalNode("dtv panel"); |
| 71 | } |
| 72 | |
| 73 | int getEdidRawData(char *buffer) |
| 74 | { |
| 75 | int size; |
| 76 | int edidFile; |
| 77 | char msmFbTypePath[MAX_FRAME_BUFFER_NAME_SIZE]; |
| 78 | int node_id = getHDMINode(); |
| 79 | |
| 80 | if (node_id < 0) { |
| 81 | ALOGE("%s no HDMI node found", __func__); |
| 82 | return 0; |
| 83 | } |
| 84 | |
| 85 | snprintf(msmFbTypePath, sizeof(msmFbTypePath), |
| 86 | "/sys/devices/virtual/graphics/fb%d/edid_raw_data", node_id); |
| 87 | |
| 88 | edidFile = open(msmFbTypePath, O_RDONLY, 0); |
| 89 | |
| 90 | if (edidFile < 0) { |
| 91 | ALOGE("%s no edid raw data found %s", __func__,msmFbTypePath); |
| 92 | return 0; |
| 93 | } |
| 94 | |
| 95 | size = (int)read(edidFile, (char*)buffer, EDID_RAW_DATA_SIZE); |
| 96 | close(edidFile); |
| 97 | return size; |
| 98 | } |
| 99 | |
| 100 | }; //namespace qdutils |