/*
// Copyright (c) 2014 Intel Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
*/
#include <HwcTrace.h>
#include <linux/psb_drm.h>
#include <Hwcomposer.h>
#include <common/DrmControl.h>
namespace android {
namespace intel {
DrmControl::DrmControl()
: mVideoExtCommand(0)
{
}
DrmControl::~DrmControl()
{
}
int DrmControl::getVideoExtCommand()
{
if (mVideoExtCommand) {
return mVideoExtCommand;
}
int fd = Hwcomposer::getInstance().getDrm()->getDrmFd();
union drm_psb_extension_arg video_getparam_arg;
strncpy(video_getparam_arg.extension,
"lnc_video_getparam", sizeof(video_getparam_arg.extension));
int ret = drmCommandWriteRead(fd, DRM_PSB_EXTENSION,
&video_getparam_arg, sizeof(video_getparam_arg));
if (ret != 0) {
VTRACE("failed to get video extension command");
return 0;
}
mVideoExtCommand = video_getparam_arg.rep.driver_ioctl_offset;
return mVideoExtCommand;
}
} // namespace intel
} // namespace android