composer: Add support to read panel info

- Implement GET_PANEL_RESOLUTION binder support. Clients
can use this api to read the panel width and height
during boot time.

Change-Id: I81d223cd94eca36f685721ef7f8fcc2985457886

5 files changed, 51 insertions, 0 deletions

diff --git a/composer/hwc_session.cpp b/composer/hwc_session.cpp
index a1c48c61..f0a0b44d 100644
--- a/composer/hwc_session.cpp
+++ b/composer/hwc_session.cpp
@@ -1719,6 +1719,14 @@ android::status_t HWCSession::notifyCallback(uint32_t command, const android::Pa
       status = SetStandByMode(input_parcel);
       break;
 
+    case qService::IQService::GET_PANEL_RESOLUTION:
+      if (!input_parcel || !output_parcel) {
+        DLOGE("QService command = %d: input_parcel and output_parcel needed.", command);
+        break;
+      }
+      status = GetPanelResolution(input_parcel, output_parcel);
+      break;
+
     default:
       DLOGW("QService command = %d is not supported.", command);
       break;
@@ -2496,6 +2504,24 @@ void HWCSession::Refresh(hwc2_display_t display) {
   callbacks_.Refresh(display);
 }
 
+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;
+}
+
 android::status_t HWCSession::GetVisibleDisplayRect(const android::Parcel *input_parcel,
                                                     android::Parcel *output_parcel) {
   int disp_idx = GetDisplayIndex(input_parcel->readInt32());
diff --git a/composer/hwc_session.h b/composer/hwc_session.h
index acd8844d..140f009f 100644
--- a/composer/hwc_session.h
+++ b/composer/hwc_session.h
@@ -492,6 +492,8 @@ class HWCSession : hwc2_device_t, HWCUEventListener, public qClient::BnQClient,
   android::status_t SetColorModeFromClient(const android::Parcel *input_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);
   android::status_t SetQSyncMode(const android::Parcel *input_parcel);
   android::status_t SetIdlePC(const android::Parcel *input_parcel);
   android::status_t RefreshScreen(const android::Parcel *input_parcel);
diff --git a/libqdutils/display_config.cpp b/libqdutils/display_config.cpp
index 0157a536..dc590e95 100644
--- a/libqdutils/display_config.cpp
+++ b/libqdutils/display_config.cpp
@@ -409,3 +409,22 @@ 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;
+}
diff --git a/libqdutils/display_config.h b/libqdutils/display_config.h
index 81f22d75..d3f75d56 100644
--- a/libqdutils/display_config.h
+++ b/libqdutils/display_config.h
@@ -173,6 +173,9 @@ int setPanelLuminanceAttributes(int dpy, float min_lum, float max_lum);
 // Sets display standy mode
 extern "C" int setStandByMode(int mode);
 
+// Get Panel Resolution
+extern "C" int getPanelResolution(int *width, int *height);
+
 }; //namespace
 
 
diff --git a/libqservice/IQService.h b/libqservice/IQService.h
index 473de12b..c7283ac3 100644
--- a/libqservice/IQService.h
+++ b/libqservice/IQService.h
@@ -80,6 +80,7 @@ public:
       SET_BRIGHTNESS_SCALE = 48,               // Set brightness scale ratio
       SET_COLOR_SAMPLING_ENABLED = 49,         // Toggle the collection of display color stats
       SET_STAND_BY_MODE = 50,                  // Set stand by mode for MDP hardware
+      GET_PANEL_RESOLUTION = 51,               // Get Panel Resolution
       COMMAND_LIST_END = 400,
     };