sdm: drm: Add support for default non-atomic mode

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

1 files changed, 137 insertions, 0 deletions

diff --git a/libdrmutils/drm_master.cpp b/libdrmutils/drm_master.cpp
new file mode 100644
index 00000000..f6a2e41f
--- /dev/null
+++ b/libdrmutils/drm_master.cpp
@@ -0,0 +1,137 @@
+/*
+* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are
+* met:
+*   * Redistributions of source code must retain the above copyright
+*     notice, this list of conditions and the following disclaimer.
+*   * Redistributions in binary form must reproduce the above
+*     copyright notice, this list of conditions and the following
+*     disclaimer in the documentation and/or other materials provided
+*     with the distribution.
+*   * Neither the name of The Linux Foundation nor the names of its
+*     contributors may be used to endorse or promote products derived
+*     from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+* ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <xf86drm.h>
+#include <xf86drmMode.h>
+#include <drm/drm_fourcc.h>
+
+#include <algorithm>
+#include <iterator>
+
+#include "drm_master.h"
+
+#define __CLASS__ "DRMMaster"
+
+using std::mutex;
+using std::lock_guard;
+using std::begin;
+using std::copy;
+using std::end;
+using std::fill;
+
+namespace drm_utils {
+
+DRMLogger *DRMLogger::s_instance = nullptr;
+DRMMaster *DRMMaster::s_instance = nullptr;
+mutex DRMMaster::s_lock;
+
+int DRMMaster::GetInstance(DRMMaster **master) {
+  lock_guard<mutex> obj(s_lock);
+
+  if (!s_instance) {
+    s_instance = new DRMMaster();
+    if (s_instance->Init() < 0) {
+      delete s_instance;
+      s_instance = nullptr;
+      return -ENODEV;
+    }
+  }
+
+  *master = s_instance;
+  return 0;
+}
+
+int DRMMaster::Init() {
+  dev_fd_ = drmOpen("msm_drm", nullptr);
+  if (dev_fd_ < 0) {
+    DRM_LOGE("%s::%s: drmOpen failed with error %d", __CLASS__, __FUNCTION__, dev_fd_);
+    return -ENODEV;
+  }
+
+  return 0;
+}
+
+DRMMaster::~DRMMaster() {
+  drmClose(dev_fd_);
+  dev_fd_ = -1;
+}
+
+int DRMMaster::CreateFbId(const DRMBuffer &drm_buffer, uint32_t *gem_handle, uint32_t *fb_id) {
+  int ret = drmPrimeFDToHandle(dev_fd_, drm_buffer.fd, gem_handle);
+  if (ret) {
+    DRM_LOGE("%s::%s: drmPrimeFDToHandle failed with error %d", __CLASS__, __FUNCTION__, ret);
+    return ret;
+  }
+
+  uint32_t gem_handles[4] = {0};
+  uint32_t pitches[4] = {0};
+  uint32_t offsets[4] = {0};
+  uint64_t modifier[4] = {0};
+
+  fill(begin(gem_handles), begin(gem_handles) + drm_buffer.num_planes, *gem_handle);
+  copy(begin(drm_buffer.stride), end(drm_buffer.stride), begin(pitches));
+  copy(begin(drm_buffer.offset), end(drm_buffer.offset), begin(offsets));
+  fill(begin(modifier), begin(modifier) + drm_buffer.num_planes, drm_buffer.drm_format_modifier);
+
+  ret = drmModeAddFB3(dev_fd_, drm_buffer.width, drm_buffer.height, drm_buffer.drm_format,
+                      gem_handles, pitches, offsets, modifier, fb_id, DRM_MODE_FB_MODIFIERS);
+  if (ret) {
+    DRM_LOGE("%s::%s: drmModeAddFB3 failed with error %d", __CLASS__, __FUNCTION__, ret);
+    struct drm_gem_close gem_close = {};
+    gem_close.handle = *gem_handle;
+    int ret1 = drmIoctl(dev_fd_, DRM_IOCTL_GEM_CLOSE, &gem_close);
+    if (ret1) {
+      DRM_LOGE("drmIoctl::DRM_IOCTL_GEM_CLOSE failed with error %d", ret1);
+    }
+  }
+
+  return ret;
+}
+
+int DRMMaster::RemoveFbId(uint32_t gem_handle, uint32_t fb_id) {
+  int ret = drmModeRmFB(dev_fd_, fb_id);
+  if (ret) {
+    DRM_LOGE("%s::%s: drmModeRmFB failed with error %d", __CLASS__, __FUNCTION__, ret);
+  }
+
+  struct drm_gem_close gem_close = {};
+  gem_close.handle = gem_handle;
+  ret = drmIoctl(dev_fd_, DRM_IOCTL_GEM_CLOSE, &gem_close);
+  if (ret) {
+    DRM_LOGE("drmIoctl::DRM_IOCTL_GEM_CLOSE failed with error %d", ret);
+  }
+
+  return ret;
+}
+
+}  // namespace drm_utils