| /* |
| // 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 |