libhwc2.1: disconnect link between plane and crtc after power on

HWC cannot just assign a plane’s crtc from crtc-0 to crtc-1 directly,
and it must turn off the plane first

Bug: 277874775
Test: enable/disable DDC in translation app
Change-Id: I7771821fc618528f63610449c506ed93ec8a8ddc

1 files changed, 15 insertions, 0 deletions

diff --git a/libhwc2.1/libdisplayinterface/ExynosDisplayDrmInterface.cpp b/libhwc2.1/libdisplayinterface/ExynosDisplayDrmInterface.cpp
index af4facc..27d541b 100644
--- a/libhwc2.1/libdisplayinterface/ExynosDisplayDrmInterface.cpp
+++ b/libhwc2.1/libdisplayinterface/ExynosDisplayDrmInterface.cpp
@@ -2000,6 +2000,21 @@ int32_t ExynosDisplayDrmInterface::clearDisplayMode(DrmModeAtomicReq &drmReq)
     return NO_ERROR;
 }
 
+int32_t ExynosDisplayDrmInterface::triggerClearDisplayPlanes()
+{
+    ATRACE_CALL();
+    DrmModeAtomicReq drmReq(this);
+
+    clearDisplayPlanes(drmReq);
+    int ret = NO_ERROR;
+    if ((ret = drmReq.commit(0, true))) {
+        HWC_LOGE(mExynosDisplay, "%s:: Failed to commit pset ret=(%d)\n",
+                __func__, ret);
+        return ret;
+    }
+    return ret;
+}
+
 int32_t ExynosDisplayDrmInterface::clearDisplayPlanes(DrmModeAtomicReq &drmReq)
 {
     int ret = NO_ERROR;