drm_hwcomposer: Rework DrmMode class

Simplify code and raise-up clang-tidy level of DrmMode class
to 'normal'.

Signed-off-by: Roman Stratiienko <r.stratiienko@gmail.com>
diff --git a/hwc2_device/HwcDisplay.cpp b/hwc2_device/HwcDisplay.cpp
index 333857e..cfef776 100644
--- a/hwc2_device/HwcDisplay.cpp
+++ b/hwc2_device/HwcDisplay.cpp
@@ -301,25 +301,25 @@
   auto attribute = static_cast<HWC2::Attribute>(attribute_in);
   switch (attribute) {
     case HWC2::Attribute::Width:
-      *value = static_cast<int>(hwc_config.mode.h_display());
+      *value = static_cast<int>(hwc_config.mode.GetRawMode().hdisplay);
       break;
     case HWC2::Attribute::Height:
-      *value = static_cast<int>(hwc_config.mode.v_display());
+      *value = static_cast<int>(hwc_config.mode.GetRawMode().vdisplay);
       break;
     case HWC2::Attribute::VsyncPeriod:
       // in nanoseconds
-      *value = static_cast<int>(1E9 / hwc_config.mode.v_refresh());
+      *value = static_cast<int>(1E9 / hwc_config.mode.GetVRefresh());
       break;
     case HWC2::Attribute::DpiX:
       // Dots per 1000 inches
-      *value = mm_width ? static_cast<int>(hwc_config.mode.h_display() *
-                                           kUmPerInch / mm_width)
+      *value = mm_width ? int(hwc_config.mode.GetRawMode().hdisplay *
+                              kUmPerInch / mm_width)
                         : -1;
       break;
     case HWC2::Attribute::DpiY:
       // Dots per 1000 inches
-      *value = mm_height ? static_cast<int>(hwc_config.mode.v_display() *
-                                            kUmPerInch / mm_height)
+      *value = mm_height ? int(hwc_config.mode.GetRawMode().vdisplay *
+                               kUmPerInch / mm_height)
                          : -1;
       break;
 #if PLATFORM_SDK_VERSION > 29
@@ -451,7 +451,7 @@
   }
 
   auto PrevModeVsyncPeriodNs = static_cast<int>(
-      1E9 / GetPipe().connector->Get()->GetActiveMode().v_refresh());
+      1E9 / GetPipe().connector->Get()->GetActiveMode().GetVRefresh());
 
   auto mode_update_commited_ = false;
   if (staged_mode_ &&
@@ -459,8 +459,8 @@
     client_layer_.SetLayerDisplayFrame(
         (hwc_rect_t){.left = 0,
                      .top = 0,
-                     .right = static_cast<int>(staged_mode_->h_display()),
-                     .bottom = static_cast<int>(staged_mode_->v_display())});
+                     .right = int(staged_mode_->GetRawMode().hdisplay),
+                     .bottom = int(staged_mode_->GetRawMode().vdisplay)});
 
     configs_.active_config_id = staged_mode_config_id_;
 
diff --git a/hwc2_device/HwcDisplayConfigs.cpp b/hwc2_device/HwcDisplayConfigs.cpp
index 346572f..9727989 100644
--- a/hwc2_device/HwcDisplayConfigs.cpp
+++ b/hwc2_device/HwcDisplayConfigs.cpp
@@ -87,8 +87,10 @@
     /* Find group for the new mode or create new group */
     uint32_t group_found = 0;
     for (auto &hwc_config : hwc_configs) {
-      if (mode.h_display() == hwc_config.second.mode.h_display() &&
-          mode.v_display() == hwc_config.second.mode.v_display()) {
+      if (mode.GetRawMode().hdisplay ==
+              hwc_config.second.mode.GetRawMode().hdisplay &&
+          mode.GetRawMode().vdisplay ==
+              hwc_config.second.mode.GetRawMode().vdisplay) {
         group_found = hwc_config.second.group_id;
       }
     }
@@ -97,9 +99,9 @@
     }
 
     bool disabled = false;
-    if ((mode.flags() & DRM_MODE_FLAG_3D_MASK) != 0) {
+    if ((mode.GetRawMode().flags & DRM_MODE_FLAG_3D_MASK) != 0) {
       ALOGI("Disabling display mode %s (Modes with 3D flag aren't supported)",
-            mode.name().c_str());
+            mode.GetName().c_str());
       disabled = true;
     }
 
@@ -112,7 +114,7 @@
     };
 
     /* Chwck if the mode is preferred */
-    if ((mode.type() & DRM_MODE_TYPE_PREFERRED) != 0 &&
+    if ((mode.GetRawMode().type & DRM_MODE_TYPE_PREFERRED) != 0 &&
         preferred_config_id == 0) {
       preferred_config_id = last_config_id;
       preferred_config_group_id = group_found;
@@ -167,7 +169,7 @@
         ALOGI(
             "Group %i: Disabling display mode %s (This group should consist "
             "of %s modes)",
-            group, hwc_config.second.mode.name().c_str(),
+            group, hwc_config.second.mode.GetName().c_str(),
             group_contains_preferred_interlaced ? "interlaced" : "progressive");
 
         hwc_config.second.disabled = true;
@@ -183,13 +185,13 @@
     for (uint32_t m2 = first_config_id; m2 < last_config_id; m2++) {
       if (m1 != m2 && hwc_configs[m1].group_id == hwc_configs[m2].group_id &&
           !hwc_configs[m1].disabled && !hwc_configs[m2].disabled &&
-          fabsf(hwc_configs[m1].mode.v_refresh() -
-                hwc_configs[m2].mode.v_refresh()) < kMinFpsDelta) {
+          fabsf(hwc_configs[m1].mode.GetVRefresh() -
+                hwc_configs[m2].mode.GetVRefresh()) < kMinFpsDelta) {
         ALOGI(
             "Group %i: Disabling display mode %s (Refresh rate value is "
             "too close to existing mode %s)",
-            hwc_configs[m2].group_id, hwc_configs[m2].mode.name().c_str(),
-            hwc_configs[m1].mode.name().c_str());
+            hwc_configs[m2].group_id, hwc_configs[m2].mode.GetName().c_str(),
+            hwc_configs[m1].mode.GetName().c_str());
 
         hwc_configs[m2].disabled = true;
       }
diff --git a/hwc2_device/HwcDisplayConfigs.h b/hwc2_device/HwcDisplayConfigs.h
index 639b302..98067c1 100644
--- a/hwc2_device/HwcDisplayConfigs.h
+++ b/hwc2_device/HwcDisplayConfigs.h
@@ -29,11 +29,11 @@
 struct HwcDisplayConfig {
   uint32_t id{};
   uint32_t group_id{};
-  DrmMode mode;
+  DrmMode mode{};
   bool disabled{};
 
   bool IsInterlaced() const {
-    return (mode.flags() & DRM_MODE_FLAG_INTERLACE) != 0;
+    return (mode.GetRawMode().flags & DRM_MODE_FLAG_INTERLACE) != 0;
   }
 };