Update USB keyboard driver to return scan code for Pause key.

Signed-off-by: vanjeff
Reviewed-by: erictian
Reviewed-by: niruiyu

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11656 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 5 insertions, 12 deletions

diff --git a/MdeModulePkg/Bus/Usb/UsbKbDxe/KeyBoard.c b/MdeModulePkg/Bus/Usb/UsbKbDxe/KeyBoard.c
index a205da0..a11333c 100644
--- a/MdeModulePkg/Bus/Usb/UsbKbDxe/KeyBoard.c
+++ b/MdeModulePkg/Bus/Usb/UsbKbDxe/KeyBoard.c
@@ -299,6 +299,10 @@ UINT8 ModifierValueToEfiScanCodeConvertionTable[] = {
   SCAN_F10,        // EFI_FUNCTION_KEY_TEN_MODIFIER

   SCAN_F11,        // EFI_FUNCTION_KEY_ELEVEN_MODIFIER

   SCAN_F12,        // EFI_FUNCTION_KEY_TWELVE_MODIFIER

+  SCAN_NULL,       // EFI_PRINT_MODIFIER

+  SCAN_NULL,       // EFI_SYS_REQUEST_MODIFIER

+  SCAN_NULL,       // EFI_SCROLL_LOCK_MODIFIER

+  SCAN_PAUSE       // EFI_PAUSE_MODIFIER

 };

 

 /**

@@ -1476,17 +1480,6 @@ USBParseKey (
       continue;

       break;

 

-    //

-    // PrintScreen, Pause/Break could not be retrieved via SimpleTextInEx protocol

-    //

-    case EFI_PAUSE_MODIFIER:

-    case EFI_BREAK_MODIFIER:

-      //

-      // Fall through

-      //

-      continue;

-      break;

-

     default:

       break;

     }

@@ -1569,7 +1562,7 @@ UsbKeyCodeToEfiInputKey (
   //

   // Make sure modifier of Key Descriptor is in the valid range according to UEFI spec.

   //

-  if (KeyDescriptor->Modifier > EFI_FUNCTION_KEY_TWELVE_MODIFIER) {

+  if (KeyDescriptor->Modifier > (sizeof (ModifierValueToEfiScanCodeConvertionTable) / sizeof (UINT8))) {

     return EFI_DEVICE_ERROR;

   }