[Ozone-Drm] More LOG cleanup

Make all the LOGs that follow DRM calls PLOGs since we're interested in
the error message.

Also add a few more LOGs during device probing just in case we end up in
odd states where the DRM device is controlled by another process and
we're trying to take ownership.

BUG=none

Review URL: https://codereview.chromium.org/991963002

Cr-Commit-Position: refs/heads/master@{#319716}

ui/ozone/platform/drm/gpu/drm_gpu_display_manager.cc

@@ -336,14 +336,14 @@ bool DrmGpuDisplayManager::GetHDCPState(const DrmDisplaySnapshot& output,
   ScopedDrmConnectorPtr connector(
       output.drm()->GetConnector(output.connector()));
   if (!connector) {
-    LOG(ERROR) << "Failed to get connector " << output.connector();
+    PLOG(ERROR) << "Failed to get connector " << output.connector();
     return false;
   }
 
   ScopedDrmPropertyPtr hdcp_property(
       output.drm()->GetProperty(connector.get(), kContentProtection));
   if (!hdcp_property) {
-    LOG(ERROR) << "'" << kContentProtection << "' property doesn't exist.";
+    PLOG(ERROR) << "'" << kContentProtection << "' property doesn't exist.";
     return false;
   }
 
@@ -369,14 +369,14 @@ bool DrmGpuDisplayManager::SetHDCPState(const DrmDisplaySnapshot& output,
   ScopedDrmConnectorPtr connector(
       output.drm()->GetConnector(output.connector()));
   if (!connector) {
-    LOG(ERROR) << "Failed to get connector " << output.connector();
+    PLOG(ERROR) << "Failed to get connector " << output.connector();
     return false;
   }
 
   ScopedDrmPropertyPtr hdcp_property(
       output.drm()->GetProperty(connector.get(), kContentProtection));
   if (!hdcp_property) {
-    LOG(ERROR) << "'" << kContentProtection << "' property doesn't exist.";
+    PLOG(ERROR) << "'" << kContentProtection << "' property doesn't exist.";
     return false;
   }
 

ui/ozone/platform/drm/gpu/drm_util.cc

@@ -129,7 +129,7 @@ bool MapDumbBuffer(int fd, uint32_t handle, uint32_t size, void** pixels) {
 
 void ForceInitializationOfPrimaryDisplay(const scoped_refptr<DrmDevice>& drm,
                                          ScreenManager* screen_manager) {
-  LOG(WARNING) << "Forcing initialization of primary display.";
+  VLOG(2) << "Forcing initialization of primary display.";
   ScopedVector<HardwareDisplayControllerInfo> displays =
       GetAvailableDisplayControllerInfos(drm->get_fd());
 
@@ -159,8 +159,10 @@ base::FilePath GetPrimaryDisplayCardPath() {
       break;
 
     int fd = open(card_path.c_str(), O_RDWR | O_CLOEXEC);
-    if (fd < 0)
+    if (fd < 0) {
+      VPLOG(1) << "Failed to open '" << card_path << "'";
       continue;
+    }
 
     memset(&res, 0, sizeof(struct drm_mode_card_res));
     int ret = drmIoctl(fd, DRM_IOCTL_MODE_GETRESOURCES, &res);
@@ -168,6 +170,8 @@ base::FilePath GetPrimaryDisplayCardPath() {
     if (ret == 0 && res.count_crtcs > 0) {
       return base::FilePath(card_path);
     }
+
+    VPLOG_IF(1, ret) << "Failed to get DRM resources for '" << card_path << "'";
   }
 
   return base::FilePath();

ui/ozone/platform/drm/gpu/gbm_buffer.cc

@@ -75,7 +75,7 @@ bool GbmPixmap::Initialize() {
   // especially when sharing buffers via DMABUF.
   dma_buf_ = gbm_bo_get_fd(buffer_->bo());
   if (dma_buf_ < 0) {
-    LOG(ERROR) << "Failed to export buffer to dma_buf";
+    PLOG(ERROR) << "Failed to export buffer to dma_buf";
     return false;
   }
   return true;

ui/ozone/platform/drm/gpu/gbm_buffer_base.cc

@@ -29,7 +29,7 @@ GbmBufferBase::GbmBufferBase(const scoped_refptr<DrmDevice>& drm,
       !drm_->AddFramebuffer(gbm_bo_get_width(bo), gbm_bo_get_height(bo),
                             kColorDepth, kPixelDepth, gbm_bo_get_stride(bo),
                             gbm_bo_get_handle(bo).u32, &framebuffer_))
-    LOG(ERROR) << "Failed to register buffer";
+    PLOG(ERROR) << "Failed to register buffer";
 }
 
 GbmBufferBase::~GbmBufferBase() {

ui/ozone/platform/drm/gpu/gbm_device.cc

@@ -27,7 +27,7 @@ bool GbmDevice::Initialize() {
 
   device_ = gbm_create_device(get_fd());
   if (!device_) {
-    LOG(ERROR) << "Unable to initialize GBM";
+    PLOG(ERROR) << "Unable to initialize GBM";
     return false;
   }
 

ui/ozone/platform/drm/gpu/hardware_display_plane_manager.cc

@@ -75,7 +75,7 @@ bool HardwareDisplayPlaneManager::Initialize(DrmDevice* drm) {
 
   ScopedDrmPlaneResPtr plane_resources(drmModeGetPlaneResources(drm->get_fd()));
   if (!plane_resources) {
-    LOG(ERROR) << "Failed to get plane resources.";
+    PLOG(ERROR) << "Failed to get plane resources";
     return false;
   }
 
@@ -90,7 +90,7 @@ bool HardwareDisplayPlaneManager::Initialize(DrmDevice* drm) {
     ScopedDrmPlanePtr drm_plane(
         drmModeGetPlane(drm->get_fd(), plane_resources->planes[i]));
     if (!drm_plane) {
-      LOG(ERROR) << "Failed to get plane " << i << ".";
+      PLOG(ERROR) << "Failed to get plane " << i;
       return false;
     }
     plane_ids.insert(drm_plane->plane_id);