add error handling on usb related modules.

[mirror_edk2.git] / MdeModulePkg / Bus / Pci / EhciDxe / EhciReg.h

diff --git a/MdeModulePkg/Bus/Pci/EhciDxe/EhciReg.h b/MdeModulePkg/Bus/Pci/EhciDxe/EhciReg.h
index 15fd661e3ddf2624adc30a1cce9584bae995bab2..a995dc40c2e2fbb96b3af5a8d391716e0ce1f00c 100644 (file)
--- a/MdeModulePkg/Bus/Pci/EhciDxe/EhciReg.h
+++ b/MdeModulePkg/Bus/Pci/EhciDxe/EhciReg.h
@@ -160,6 +160,35 @@ EhcWriteOpReg (
   IN UINT32               Data\r
   );\r
 \r
+/**\r
+  Set one bit of the operational register while keeping other bits.\r
+\r
+  @param  Ehc          The EHCI device.\r
+  @param  Offset       The offset of the operational register.\r
+  @param  Bit          The bit mask of the register to set.\r
+\r
+**/\r
+VOID\r
+EhcSetOpRegBit (\r
+  IN USB2_HC_DEV          *Ehc,\r
+  IN UINT32               Offset,\r
+  IN UINT32               Bit\r
+  );\r
+\r
+/**\r
+  Clear one bit of the operational register while keeping other bits.\r
+\r
+  @param  Ehc          The EHCI device.\r
+  @param  Offset       The offset of the operational register.\r
+  @param  Bit          The bit mask of the register to clear.\r
+\r
+**/\r
+VOID\r
+EhcClearOpRegBit (\r
+  IN USB2_HC_DEV          *Ehc,\r
+  IN UINT32               Offset,\r
+  IN UINT32               Bit\r
+  );\r
 \r
 /**\r
   Add support for UEFI Over Legacy (UoL) feature, stop\r