main thread log: Add set display rotation event

If this ever cause problem, we can see this event around the
suspicious timestamp in main thread event dump.

BUG=b:329545142
TEST=Trigger SetDisplayRotation, then cras_test_client --dump_main

Change-Id: Iab00e81895ec8a42c083d6a51240ac7159fa72ec
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/adhd/+/5541554
Commit-Queue: ChromeOS Auto Retry <[email protected]>
Reviewed-by: Curtis Malainey <[email protected]>
Tested-by: [email protected] <[email protected]>
Reviewed-by: Yu-Hsuan Hsu <[email protected]>
Reviewed-by: Li-Yu Yu <[email protected]>
Tested-by: Hsinyu Chao <[email protected]>

Author: Hsin-yu Chao

cras/deprecated/cras_test_client/cras_test_client.c

@@ -1338,6 +1338,9 @@ static void show_mainlog_tag(const struct main_thread_event_log* log,
     case MAIN_THREAD_OUTPUT_NODE_VOLUME:
       printf("%-30s dev %u volume %u\n", "OUTPUT_NODE_VOLUME", data1, data2);
       break;
+    case MAIN_THREAD_SET_DISPLAY_ROTATION:
+      printf("%-30s id %u rotation %u\n", "SET_DISPLAY_ROTATION", data1, data2);
+      break;
     case MAIN_THREAD_SET_OUTPUT_USER_MUTE:
       printf("%-30s mute %u\n", "SET_OUTPUT_USER_MUTE", data1);
       break;

cras/include/cras_types.h

@@ -362,6 +362,8 @@ enum MAIN_THREAD_LOG_EVENTS {
   MAIN_THREAD_INPUT_NODE_GAIN,
   // When output node volume changes.
   MAIN_THREAD_OUTPUT_NODE_VOLUME,
+  // When display rotation is set.
+  MAIN_THREAD_SET_DISPLAY_ROTATION,
   // When output mute state is set.
   MAIN_THREAD_SET_OUTPUT_USER_MUTE,
   // When system resumes and notifies CRAS.

cras/src/server/cras_dbus_control.c

@@ -317,6 +317,8 @@ static DBusHandlerResult handle_set_display_rotation(DBusConnection* conn,
     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
   }
 
+  MAINLOG(main_log, MAIN_THREAD_SET_DISPLAY_ROTATION, id, rotation, 0);
+
   if (!cras_validate_screen_rotation(rotation)) {
     syslog(LOG_WARNING, "Invalid display rotation received: %u", rotation);
   } else {