7d476edfb3
Add support for booting up with default non-atomic mode
Add libdrmutils that currently has:
DRMMaster:
Creates a master DRM session
Converts ION handles to DRM FB_ID
DRMResMgr:
Enables a default display path by providing APIs for
connector id, crtc id, mode etc
Change-Id: I1dc697d2cc5e3fa744c99e2c9ddd57bf06e78c4f
CRs-fixed: 1114808
138 lines
4.3 KiB
C++
138 lines
4.3 KiB
C++
/*
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* Copyright (c) 2017, The Linux Foundation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of The Linux Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <xf86drm.h>
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#include <xf86drmMode.h>
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#include <drm/drm_fourcc.h>
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#include <algorithm>
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#include <iterator>
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#include "drm_master.h"
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#define __CLASS__ "DRMMaster"
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using std::mutex;
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using std::lock_guard;
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using std::begin;
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using std::copy;
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using std::end;
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using std::fill;
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namespace drm_utils {
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DRMLogger *DRMLogger::s_instance = nullptr;
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DRMMaster *DRMMaster::s_instance = nullptr;
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mutex DRMMaster::s_lock;
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int DRMMaster::GetInstance(DRMMaster **master) {
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lock_guard<mutex> obj(s_lock);
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if (!s_instance) {
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s_instance = new DRMMaster();
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if (s_instance->Init() < 0) {
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delete s_instance;
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s_instance = nullptr;
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return -ENODEV;
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}
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}
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*master = s_instance;
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return 0;
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}
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int DRMMaster::Init() {
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dev_fd_ = drmOpen("msm_drm", nullptr);
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if (dev_fd_ < 0) {
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DRM_LOGE("%s::%s: drmOpen failed with error %d", __CLASS__, __FUNCTION__, dev_fd_);
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return -ENODEV;
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}
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return 0;
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}
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DRMMaster::~DRMMaster() {
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drmClose(dev_fd_);
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dev_fd_ = -1;
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}
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int DRMMaster::CreateFbId(const DRMBuffer &drm_buffer, uint32_t *gem_handle, uint32_t *fb_id) {
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int ret = drmPrimeFDToHandle(dev_fd_, drm_buffer.fd, gem_handle);
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if (ret) {
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DRM_LOGE("%s::%s: drmPrimeFDToHandle failed with error %d", __CLASS__, __FUNCTION__, ret);
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return ret;
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}
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uint32_t gem_handles[4] = {0};
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uint32_t pitches[4] = {0};
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uint32_t offsets[4] = {0};
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uint64_t modifier[4] = {0};
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fill(begin(gem_handles), begin(gem_handles) + drm_buffer.num_planes, *gem_handle);
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copy(begin(drm_buffer.stride), end(drm_buffer.stride), begin(pitches));
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copy(begin(drm_buffer.offset), end(drm_buffer.offset), begin(offsets));
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fill(begin(modifier), begin(modifier) + drm_buffer.num_planes, drm_buffer.drm_format_modifier);
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ret = drmModeAddFB3(dev_fd_, drm_buffer.width, drm_buffer.height, drm_buffer.drm_format,
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gem_handles, pitches, offsets, modifier, fb_id, DRM_MODE_FB_MODIFIERS);
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if (ret) {
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DRM_LOGE("%s::%s: drmModeAddFB3 failed with error %d", __CLASS__, __FUNCTION__, ret);
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struct drm_gem_close gem_close = {};
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gem_close.handle = *gem_handle;
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int ret1 = drmIoctl(dev_fd_, DRM_IOCTL_GEM_CLOSE, &gem_close);
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if (ret1) {
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DRM_LOGE("drmIoctl::DRM_IOCTL_GEM_CLOSE failed with error %d", ret1);
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}
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}
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return ret;
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}
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int DRMMaster::RemoveFbId(uint32_t gem_handle, uint32_t fb_id) {
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int ret = drmModeRmFB(dev_fd_, fb_id);
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if (ret) {
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DRM_LOGE("%s::%s: drmModeRmFB failed with error %d", __CLASS__, __FUNCTION__, ret);
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}
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struct drm_gem_close gem_close = {};
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gem_close.handle = gem_handle;
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ret = drmIoctl(dev_fd_, DRM_IOCTL_GEM_CLOSE, &gem_close);
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if (ret) {
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DRM_LOGE("drmIoctl::DRM_IOCTL_GEM_CLOSE failed with error %d", ret);
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}
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return ret;
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}
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} // namespace drm_utils
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