hwc2: Add support to read panel information from SKG HAL

- Implement GET_PANEL_RESOLUTION binder support. SKG HAL
will use this api to read the panel width and height
during boot time

CRs-Fixed: 2338141
Change-Id: I18e1c84f8c535cccefc8800d94971e6f535b2532

libqdutils/display_config.cpp

@@ -441,3 +441,22 @@ extern "C" int setStandByMode(int mode) {
     }
     return err;
 }
+
+extern "C"  int getPanelResolution(int *width, int *height) {
+    status_t err = (status_t) FAILED_TRANSACTION;
+    sp<IQService> binder = getBinder();
+    Parcel inParcel, outParcel;
+
+    if(binder != NULL) {
+        err = binder->dispatch(IQService::GET_PANEL_RESOLUTION,
+              &inParcel, &outParcel);
+        if(err != 0) {
+            ALOGE_IF(getBinder(), "%s() failed with err %d", __FUNCTION__, err);
+        } else {
+            *width = outParcel.readInt32();
+            *height = outParcel.readInt32();
+        }
+    }
+
+    return err;
+}

libqservice/IQService.h

@@ -80,6 +80,7 @@ public:
         GET_SUPPORTED_DSI_CLK = 38, // Get supported DSI Clk.
         GET_COMPOSER_STATUS = 39, // Get composer init status-true if primary display init is done
 	SET_STAND_BY_MODE = 40, //Set stand by mode for MDP hardware.
+        GET_PANEL_RESOLUTION = 41, // Get Panel Resolution
         COMMAND_LIST_END = 400,
     };
 

sdm/libs/hwc2/hwc_session.cpp

@@ -1113,6 +1113,10 @@ android::status_t HWCSession::notifyCallback(uint32_t command, const android::Pa
       status = SetStandByMode(input_parcel);
       break;
 
+    case qService::IQService::GET_PANEL_RESOLUTION:
+      status = GetPanelResolution(input_parcel, output_parcel);
+      break;
+
     default:
       DLOGW("QService command = %d is not supported", command);
       return -EINVAL;
@@ -1716,6 +1720,24 @@ android::status_t HWCSession::SetStandByMode(const android::Parcel *input_parcel
   return android::NO_ERROR;
 }
 
+android::status_t HWCSession::GetPanelResolution(const android::Parcel *input_parcel,
+                                                 android::Parcel *output_parcel) {
+  SCOPE_LOCK(locker_[HWC_DISPLAY_PRIMARY]);
+
+  if (!hwc_display_[HWC_DISPLAY_PRIMARY]) {
+    DLOGI("Primary display is not initialized");
+    return -EINVAL;
+  }
+  auto panel_width = 0u;
+  auto panel_height = 0u;
+
+  hwc_display_[HWC_DISPLAY_PRIMARY]->GetPanelResolution(&panel_width, &panel_height);
+  output_parcel->writeInt32(INT32(panel_width));
+  output_parcel->writeInt32(INT32(panel_height));
+
+  return android::NO_ERROR;
+}
+
 void HWCSession::Refresh(hwc2_display_t display) {
   SCOPE_LOCK(callbacks_lock_);
    callbacks_.Refresh(display);

sdm/libs/hwc2/hwc_session.h

@@ -254,6 +254,8 @@ class HWCSession : hwc2_device_t, HWCUEventListener, public qClient::BnQClient,
                                        android::Parcel *output_parcel);
   android::status_t getComposerStatus();
   android::status_t SetStandByMode(const android::Parcel *input_parcel);
+  android::status_t GetPanelResolution(const android::Parcel *input_parcel,
+                                       android::Parcel *output_parcel);
 
 
   void Refresh(hwc2_display_t display);