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