1/* 2// Copyright (c) 2014 Intel Corporation 3// 4// Licensed under the Apache License, Version 2.0 (the "License"); 5// you may not use this file except in compliance with the License. 6// You may obtain a copy of the License at 7// 8// http://www.apache.org/licenses/LICENSE-2.0 9// 10// Unless required by applicable law or agreed to in writing, software 11// distributed under the License is distributed on an "AS IS" BASIS, 12// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13// See the License for the specific language governing permissions and 14// limitations under the License. 15*/ 16 17#include <common/utils/HwcTrace.h> 18#include <linux/psb_drm.h> 19#include <Hwcomposer.h> 20#include <ips/common/DrmControl.h> 21 22namespace android { 23namespace intel { 24 25DrmControl::DrmControl() 26 : mVideoExtCommand(0) 27{ 28} 29 30DrmControl::~DrmControl() 31{ 32} 33 34int DrmControl::getVideoExtCommand() 35{ 36 if (mVideoExtCommand) { 37 return mVideoExtCommand; 38 } 39 40 int fd = Hwcomposer::getInstance().getDrm()->getDrmFd(); 41 42 union drm_psb_extension_arg video_getparam_arg; 43 strncpy(video_getparam_arg.extension, 44 "lnc_video_getparam", sizeof(video_getparam_arg.extension)); 45 int ret = drmCommandWriteRead(fd, DRM_PSB_EXTENSION, 46 &video_getparam_arg, sizeof(video_getparam_arg)); 47 if (ret != 0) { 48 VLOGTRACE("failed to get video extension command"); 49 return 0; 50 } 51 52 mVideoExtCommand = video_getparam_arg.rep.driver_ioctl_offset; 53 54 return mVideoExtCommand; 55} 56 57} // namespace intel 58} // namespace android 59