Initial import.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
bbahnsen
772
EdkModulePkg/Bus/Usb/UsbKb/Dxe/efikey.c
Normal file
772
EdkModulePkg/Bus/Usb/UsbKb/Dxe/efikey.c
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@@ -0,0 +1,772 @@
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/*++
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Copyright (c) 2006, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
|
||||
which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name:
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EfiKey.c
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Abstract:
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USB Keyboard Driver
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Revision History
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--*/
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#include "efikey.h"
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#include "keyboard.h"
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//
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// Prototypes
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// Driver model protocol interface
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//
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EFI_STATUS
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EFIAPI
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USBKeyboardDriverBindingEntryPoint (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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||||
);
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||||
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EFI_STATUS
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EFIAPI
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USBKeyboardDriverBindingSupported (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Controller,
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||||
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
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||||
);
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EFI_STATUS
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EFIAPI
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USBKeyboardDriverBindingStart (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Controller,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
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);
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|
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EFI_STATUS
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EFIAPI
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||||
USBKeyboardDriverBindingStop (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Controller,
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IN UINTN NumberOfChildren,
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IN EFI_HANDLE *ChildHandleBuffer
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);
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//
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// Simple Text In Protocol Interface
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//
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STATIC
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EFI_STATUS
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EFIAPI
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USBKeyboardReset (
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IN EFI_SIMPLE_TEXT_IN_PROTOCOL *This,
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IN BOOLEAN ExtendedVerification
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);
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STATIC
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EFI_STATUS
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EFIAPI
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USBKeyboardReadKeyStroke (
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IN EFI_SIMPLE_TEXT_IN_PROTOCOL *This,
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OUT EFI_INPUT_KEY *Key
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);
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STATIC
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VOID
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EFIAPI
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USBKeyboardWaitForKey (
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IN EFI_EVENT Event,
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IN VOID *Context
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);
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//
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// Helper functions
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//
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STATIC
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EFI_STATUS
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USBKeyboardCheckForKey (
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IN USB_KB_DEV *UsbKeyboardDevice
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);
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//
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// USB Keyboard Driver Global Variables
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//
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EFI_DRIVER_BINDING_PROTOCOL gUsbKeyboardDriverBinding = {
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USBKeyboardDriverBindingSupported,
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USBKeyboardDriverBindingStart,
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USBKeyboardDriverBindingStop,
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0x10,
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NULL,
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NULL
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};
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EFI_STATUS
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EFIAPI
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USBKeyboardDriverBindingSupported (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Controller,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
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)
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/*++
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Routine Description:
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Supported.
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Arguments:
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This - EFI_DRIVER_BINDING_PROTOCOL
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Controller - Controller handle
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RemainingDevicePath - EFI_DEVICE_PATH_PROTOCOL
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Returns:
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EFI_STATUS
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--*/
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{
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EFI_STATUS OpenStatus;
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EFI_USB_IO_PROTOCOL *UsbIo;
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EFI_STATUS Status;
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//
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// Check if USB_IO protocol is attached on the controller handle.
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//
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OpenStatus = gBS->OpenProtocol (
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Controller,
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&gEfiUsbIoProtocolGuid,
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(VOID **) &UsbIo,
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This->DriverBindingHandle,
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Controller,
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EFI_OPEN_PROTOCOL_BY_DRIVER
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);
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if (EFI_ERROR (OpenStatus)) {
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return OpenStatus;
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}
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//
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// Use the USB I/O protocol interface to check whether the Controller is
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// the Keyboard controller that can be managed by this driver.
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//
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Status = EFI_SUCCESS;
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if (!IsUSBKeyboard (UsbIo)) {
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Status = EFI_UNSUPPORTED;
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}
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gBS->CloseProtocol (
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Controller,
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&gEfiUsbIoProtocolGuid,
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This->DriverBindingHandle,
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Controller
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);
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return Status;
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}
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EFI_STATUS
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EFIAPI
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USBKeyboardDriverBindingStart (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Controller,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
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)
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/*++
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Routine Description:
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Start.
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Arguments:
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This - EFI_DRIVER_BINDING_PROTOCOL
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Controller - Controller handle
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RemainingDevicePath - EFI_DEVICE_PATH_PROTOCOL
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Returns:
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EFI_SUCCESS - Success
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EFI_OUT_OF_RESOURCES - Can't allocate memory
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EFI_UNSUPPORTED - The Start routine fail
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--*/
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{
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EFI_STATUS Status;
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EFI_USB_IO_PROTOCOL *UsbIo;
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USB_KB_DEV *UsbKeyboardDevice;
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UINT8 EndpointNumber;
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EFI_USB_ENDPOINT_DESCRIPTOR EndpointDescriptor;
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UINT8 Index;
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UINT8 EndpointAddr;
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UINT8 PollingInterval;
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UINT8 PacketSize;
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BOOLEAN Found;
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UsbKeyboardDevice = NULL;
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Found = FALSE;
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//
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// Open USB_IO Protocol
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//
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Status = gBS->OpenProtocol (
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Controller,
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&gEfiUsbIoProtocolGuid,
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(VOID **) &UsbIo,
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This->DriverBindingHandle,
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Controller,
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EFI_OPEN_PROTOCOL_BY_DRIVER
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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UsbKeyboardDevice = AllocateZeroPool (sizeof (USB_KB_DEV));
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if (UsbKeyboardDevice == NULL) {
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gBS->CloseProtocol (
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Controller,
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&gEfiUsbIoProtocolGuid,
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This->DriverBindingHandle,
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Controller
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);
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return EFI_OUT_OF_RESOURCES;
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}
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//
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// Get the Device Path Protocol on Controller's handle
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//
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Status = gBS->OpenProtocol (
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Controller,
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&gEfiDevicePathProtocolGuid,
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(VOID **) &UsbKeyboardDevice->DevicePath,
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This->DriverBindingHandle,
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Controller,
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EFI_OPEN_PROTOCOL_GET_PROTOCOL
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);
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if (EFI_ERROR (Status)) {
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gBS->FreePool (UsbKeyboardDevice);
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gBS->CloseProtocol (
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Controller,
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&gEfiUsbIoProtocolGuid,
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This->DriverBindingHandle,
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Controller
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);
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return Status;
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}
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//
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// Report that the usb keyboard is being enabled
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//
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KbdReportStatusCode (
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UsbKeyboardDevice->DevicePath,
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EFI_PROGRESS_CODE,
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(EFI_PERIPHERAL_KEYBOARD | EFI_P_PC_ENABLE)
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||||
);
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//
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// This is pretty close to keyboard detection, so log progress
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//
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KbdReportStatusCode (
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UsbKeyboardDevice->DevicePath,
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EFI_PROGRESS_CODE,
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(EFI_PERIPHERAL_KEYBOARD | EFI_P_PC_PRESENCE_DETECT)
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);
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//
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// Initialize UsbKeyboardDevice
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//
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UsbKeyboardDevice->UsbIo = UsbIo;
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//
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// Get interface & endpoint descriptor
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//
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UsbIo->UsbGetInterfaceDescriptor (
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UsbIo,
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&UsbKeyboardDevice->InterfaceDescriptor
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);
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EndpointNumber = UsbKeyboardDevice->InterfaceDescriptor.NumEndpoints;
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for (Index = 0; Index < EndpointNumber; Index++) {
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UsbIo->UsbGetEndpointDescriptor (
|
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UsbIo,
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Index,
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&EndpointDescriptor
|
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);
|
||||
|
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if ((EndpointDescriptor.Attributes & 0x03) == 0x03) {
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//
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// We only care interrupt endpoint here
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//
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CopyMem (&UsbKeyboardDevice->IntEndpointDescriptor, &EndpointDescriptor, sizeof (EndpointDescriptor));
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//UsbKeyboardDevice->IntEndpointDescriptor = EndpointDescriptor;
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Found = TRUE;
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}
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}
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if (!Found) {
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//
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// No interrupt endpoint found, then return unsupported.
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//
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gBS->FreePool (UsbKeyboardDevice);
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gBS->CloseProtocol (
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Controller,
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&gEfiUsbIoProtocolGuid,
|
||||
This->DriverBindingHandle,
|
||||
Controller
|
||||
);
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||||
return EFI_UNSUPPORTED;
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}
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UsbKeyboardDevice->Signature = USB_KB_DEV_SIGNATURE;
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UsbKeyboardDevice->SimpleInput.Reset = USBKeyboardReset;
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UsbKeyboardDevice->SimpleInput.ReadKeyStroke = USBKeyboardReadKeyStroke;
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Status = gBS->CreateEvent (
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EFI_EVENT_NOTIFY_WAIT,
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EFI_TPL_NOTIFY,
|
||||
USBKeyboardWaitForKey,
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||||
UsbKeyboardDevice,
|
||||
&(UsbKeyboardDevice->SimpleInput.WaitForKey)
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||||
);
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||||
|
||||
if (EFI_ERROR (Status)) {
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||||
gBS->FreePool (UsbKeyboardDevice);
|
||||
gBS->CloseProtocol (
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||||
Controller,
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&gEfiUsbIoProtocolGuid,
|
||||
This->DriverBindingHandle,
|
||||
Controller
|
||||
);
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return Status;
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}
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||||
|
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//
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// Install simple txt in protocol interface
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// for the usb keyboard device.
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// Usb keyboard is a hot plug device, and expected to work immediately
|
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// when plugging into system, so a HotPlugDeviceGuid is installed onto
|
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// the usb keyboard device handle, to distinguish it from other conventional
|
||||
// console devices.
|
||||
//
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||||
Status = gBS->InstallMultipleProtocolInterfaces (
|
||||
&Controller,
|
||||
&gEfiSimpleTextInProtocolGuid,
|
||||
&UsbKeyboardDevice->SimpleInput,
|
||||
&gEfiHotPlugDeviceGuid,
|
||||
NULL,
|
||||
NULL
|
||||
);
|
||||
if (EFI_ERROR (Status)) {
|
||||
gBS->CloseEvent (UsbKeyboardDevice->SimpleInput.WaitForKey);
|
||||
gBS->FreePool (UsbKeyboardDevice);
|
||||
gBS->CloseProtocol (
|
||||
Controller,
|
||||
&gEfiUsbIoProtocolGuid,
|
||||
This->DriverBindingHandle,
|
||||
Controller
|
||||
);
|
||||
return Status;
|
||||
}
|
||||
|
||||
//
|
||||
// Reset USB Keyboard Device
|
||||
//
|
||||
Status = UsbKeyboardDevice->SimpleInput.Reset (
|
||||
&UsbKeyboardDevice->SimpleInput,
|
||||
TRUE
|
||||
);
|
||||
if (EFI_ERROR (Status)) {
|
||||
gBS->UninstallMultipleProtocolInterfaces (
|
||||
Controller,
|
||||
&gEfiSimpleTextInProtocolGuid,
|
||||
&UsbKeyboardDevice->SimpleInput,
|
||||
&gEfiHotPlugDeviceGuid,
|
||||
NULL,
|
||||
NULL
|
||||
);
|
||||
gBS->CloseEvent (UsbKeyboardDevice->SimpleInput.WaitForKey);
|
||||
gBS->FreePool (UsbKeyboardDevice);
|
||||
gBS->CloseProtocol (
|
||||
Controller,
|
||||
&gEfiUsbIoProtocolGuid,
|
||||
This->DriverBindingHandle,
|
||||
Controller
|
||||
);
|
||||
return Status;
|
||||
}
|
||||
//
|
||||
// submit async interrupt transfer
|
||||
//
|
||||
EndpointAddr = UsbKeyboardDevice->IntEndpointDescriptor.EndpointAddress;
|
||||
PollingInterval = UsbKeyboardDevice->IntEndpointDescriptor.Interval;
|
||||
PacketSize = (UINT8) (UsbKeyboardDevice->IntEndpointDescriptor.MaxPacketSize);
|
||||
|
||||
Status = UsbIo->UsbAsyncInterruptTransfer (
|
||||
UsbIo,
|
||||
EndpointAddr,
|
||||
TRUE,
|
||||
PollingInterval,
|
||||
PacketSize,
|
||||
KeyboardHandler,
|
||||
UsbKeyboardDevice
|
||||
);
|
||||
|
||||
if (EFI_ERROR (Status)) {
|
||||
|
||||
gBS->UninstallMultipleProtocolInterfaces (
|
||||
Controller,
|
||||
&gEfiSimpleTextInProtocolGuid,
|
||||
&UsbKeyboardDevice->SimpleInput,
|
||||
&gEfiHotPlugDeviceGuid,
|
||||
NULL,
|
||||
NULL
|
||||
);
|
||||
gBS->CloseEvent (UsbKeyboardDevice->SimpleInput.WaitForKey);
|
||||
gBS->FreePool (UsbKeyboardDevice);
|
||||
gBS->CloseProtocol (
|
||||
Controller,
|
||||
&gEfiUsbIoProtocolGuid,
|
||||
This->DriverBindingHandle,
|
||||
Controller
|
||||
);
|
||||
return Status;
|
||||
}
|
||||
|
||||
UsbKeyboardDevice->ControllerNameTable = NULL;
|
||||
AddUnicodeString (
|
||||
"eng",
|
||||
gUsbKeyboardComponentName.SupportedLanguages,
|
||||
&UsbKeyboardDevice->ControllerNameTable,
|
||||
(CHAR16 *) L"Generic Usb Keyboard"
|
||||
);
|
||||
|
||||
return EFI_SUCCESS;
|
||||
}
|
||||
|
||||
|
||||
EFI_STATUS
|
||||
EFIAPI
|
||||
USBKeyboardDriverBindingStop (
|
||||
IN EFI_DRIVER_BINDING_PROTOCOL *This,
|
||||
IN EFI_HANDLE Controller,
|
||||
IN UINTN NumberOfChildren,
|
||||
IN EFI_HANDLE *ChildHandleBuffer
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
Stop.
|
||||
|
||||
Arguments:
|
||||
This - EFI_DRIVER_BINDING_PROTOCOL
|
||||
Controller - Controller handle
|
||||
NumberOfChildren - Child handle number
|
||||
ChildHandleBuffer - Child handle buffer
|
||||
Returns:
|
||||
EFI_SUCCESS - Success
|
||||
EFI_UNSUPPORTED - Can't support
|
||||
--*/
|
||||
{
|
||||
EFI_STATUS Status;
|
||||
EFI_SIMPLE_TEXT_IN_PROTOCOL *SimpleInput;
|
||||
USB_KB_DEV *UsbKeyboardDevice;
|
||||
EFI_USB_IO_PROTOCOL *UsbIo;
|
||||
|
||||
Status = gBS->OpenProtocol (
|
||||
Controller,
|
||||
&gEfiSimpleTextInProtocolGuid,
|
||||
(VOID **) &SimpleInput,
|
||||
This->DriverBindingHandle,
|
||||
Controller,
|
||||
EFI_OPEN_PROTOCOL_BY_DRIVER
|
||||
);
|
||||
if (EFI_ERROR (Status)) {
|
||||
return EFI_UNSUPPORTED;
|
||||
}
|
||||
|
||||
//
|
||||
// Get USB_KB_DEV instance.
|
||||
//
|
||||
UsbKeyboardDevice = USB_KB_DEV_FROM_THIS (SimpleInput);
|
||||
|
||||
gBS->CloseProtocol (
|
||||
Controller,
|
||||
&gEfiSimpleTextInProtocolGuid,
|
||||
This->DriverBindingHandle,
|
||||
Controller
|
||||
);
|
||||
|
||||
UsbIo = UsbKeyboardDevice->UsbIo;
|
||||
//
|
||||
// Uninstall the Asyn Interrupt Transfer from this device
|
||||
// will disable the key data input from this device
|
||||
//
|
||||
KbdReportStatusCode (
|
||||
UsbKeyboardDevice->DevicePath,
|
||||
EFI_PROGRESS_CODE,
|
||||
(EFI_PERIPHERAL_KEYBOARD | EFI_P_PC_DISABLE)
|
||||
);
|
||||
|
||||
//
|
||||
// Destroy asynchronous interrupt transfer
|
||||
//
|
||||
UsbKeyboardDevice->UsbIo->UsbAsyncInterruptTransfer (
|
||||
UsbKeyboardDevice->UsbIo,
|
||||
UsbKeyboardDevice->IntEndpointDescriptor.EndpointAddress,
|
||||
FALSE,
|
||||
UsbKeyboardDevice->IntEndpointDescriptor.Interval,
|
||||
0,
|
||||
NULL,
|
||||
NULL
|
||||
);
|
||||
|
||||
gBS->CloseProtocol (
|
||||
Controller,
|
||||
&gEfiUsbIoProtocolGuid,
|
||||
This->DriverBindingHandle,
|
||||
Controller
|
||||
);
|
||||
|
||||
Status = gBS->UninstallMultipleProtocolInterfaces (
|
||||
Controller,
|
||||
&gEfiSimpleTextInProtocolGuid,
|
||||
&UsbKeyboardDevice->SimpleInput,
|
||||
&gEfiHotPlugDeviceGuid,
|
||||
NULL,
|
||||
NULL
|
||||
);
|
||||
//
|
||||
// free all the resources.
|
||||
//
|
||||
gBS->CloseEvent (UsbKeyboardDevice->RepeatTimer);
|
||||
gBS->CloseEvent (UsbKeyboardDevice->DelayedRecoveryEvent);
|
||||
gBS->CloseEvent ((UsbKeyboardDevice->SimpleInput).WaitForKey);
|
||||
|
||||
if (UsbKeyboardDevice->ControllerNameTable != NULL) {
|
||||
FreeUnicodeStringTable (UsbKeyboardDevice->ControllerNameTable);
|
||||
}
|
||||
|
||||
gBS->FreePool (UsbKeyboardDevice);
|
||||
|
||||
return Status;
|
||||
|
||||
}
|
||||
|
||||
|
||||
EFI_STATUS
|
||||
EFIAPI
|
||||
USBKeyboardReset (
|
||||
IN EFI_SIMPLE_TEXT_IN_PROTOCOL *This,
|
||||
IN BOOLEAN ExtendedVerification
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
Implements EFI_SIMPLE_TEXT_IN_PROTOCOL.Reset() function.
|
||||
|
||||
Arguments:
|
||||
This The EFI_SIMPLE_TEXT_IN_PROTOCOL instance.
|
||||
ExtendedVerification
|
||||
Indicates that the driver may perform a more exhaustive
|
||||
verification operation of the device during reset.
|
||||
|
||||
Returns:
|
||||
EFI_SUCCESS - Success
|
||||
EFI_DEVICE_ERROR - Hardware Error
|
||||
--*/
|
||||
{
|
||||
EFI_STATUS Status;
|
||||
USB_KB_DEV *UsbKeyboardDevice;
|
||||
EFI_USB_IO_PROTOCOL *UsbIo;
|
||||
|
||||
UsbKeyboardDevice = USB_KB_DEV_FROM_THIS (This);
|
||||
|
||||
UsbIo = UsbKeyboardDevice->UsbIo;
|
||||
|
||||
KbdReportStatusCode (
|
||||
UsbKeyboardDevice->DevicePath,
|
||||
EFI_PROGRESS_CODE,
|
||||
(EFI_PERIPHERAL_KEYBOARD | EFI_P_PC_RESET)
|
||||
);
|
||||
|
||||
//
|
||||
// Non Exhaustive reset:
|
||||
// only reset private data structures.
|
||||
//
|
||||
if (!ExtendedVerification) {
|
||||
//
|
||||
// Clear the key buffer of this Usb keyboard
|
||||
//
|
||||
KbdReportStatusCode (
|
||||
UsbKeyboardDevice->DevicePath,
|
||||
EFI_PROGRESS_CODE,
|
||||
(EFI_PERIPHERAL_KEYBOARD | EFI_P_KEYBOARD_PC_CLEAR_BUFFER)
|
||||
);
|
||||
|
||||
InitUSBKeyBuffer (&(UsbKeyboardDevice->KeyboardBuffer));
|
||||
UsbKeyboardDevice->CurKeyChar = 0;
|
||||
return EFI_SUCCESS;
|
||||
}
|
||||
|
||||
//
|
||||
// Exhaustive reset
|
||||
//
|
||||
Status = InitUSBKeyboard (UsbKeyboardDevice);
|
||||
UsbKeyboardDevice->CurKeyChar = 0;
|
||||
if (EFI_ERROR (Status)) {
|
||||
return EFI_DEVICE_ERROR;
|
||||
}
|
||||
|
||||
return EFI_SUCCESS;
|
||||
}
|
||||
|
||||
STATIC
|
||||
EFI_STATUS
|
||||
EFIAPI
|
||||
USBKeyboardReadKeyStroke (
|
||||
IN EFI_SIMPLE_TEXT_IN_PROTOCOL *This,
|
||||
OUT EFI_INPUT_KEY *Key
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
Implements EFI_SIMPLE_TEXT_IN_PROTOCOL.ReadKeyStroke() function.
|
||||
|
||||
Arguments:
|
||||
This The EFI_SIMPLE_TEXT_IN_PROTOCOL instance.
|
||||
Key A pointer to a buffer that is filled in with the keystroke
|
||||
information for the key that was pressed.
|
||||
|
||||
Returns:
|
||||
EFI_SUCCESS - Success
|
||||
--*/
|
||||
{
|
||||
USB_KB_DEV *UsbKeyboardDevice;
|
||||
EFI_STATUS Status;
|
||||
UINT8 KeyChar;
|
||||
|
||||
UsbKeyboardDevice = USB_KB_DEV_FROM_THIS (This);
|
||||
|
||||
//
|
||||
// if there is no saved ASCII byte, fetch it
|
||||
// by calling USBKeyboardCheckForKey().
|
||||
//
|
||||
if (UsbKeyboardDevice->CurKeyChar == 0) {
|
||||
Status = USBKeyboardCheckForKey (UsbKeyboardDevice);
|
||||
if (EFI_ERROR (Status)) {
|
||||
return Status;
|
||||
}
|
||||
}
|
||||
|
||||
Key->UnicodeChar = 0;
|
||||
Key->ScanCode = SCAN_NULL;
|
||||
|
||||
KeyChar = UsbKeyboardDevice->CurKeyChar;
|
||||
|
||||
UsbKeyboardDevice->CurKeyChar = 0;
|
||||
|
||||
//
|
||||
// Translate saved ASCII byte into EFI_INPUT_KEY
|
||||
//
|
||||
Status = USBKeyCodeToEFIScanCode (UsbKeyboardDevice, KeyChar, Key);
|
||||
|
||||
return Status;
|
||||
|
||||
}
|
||||
|
||||
STATIC
|
||||
VOID
|
||||
EFIAPI
|
||||
USBKeyboardWaitForKey (
|
||||
IN EFI_EVENT Event,
|
||||
IN VOID *Context
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
Handler function for WaitForKey event.
|
||||
|
||||
Arguments:
|
||||
Event Event to be signaled when a key is pressed.
|
||||
Context Points to USB_KB_DEV instance.
|
||||
|
||||
Returns:
|
||||
VOID
|
||||
--*/
|
||||
{
|
||||
USB_KB_DEV *UsbKeyboardDevice;
|
||||
|
||||
UsbKeyboardDevice = (USB_KB_DEV *) Context;
|
||||
|
||||
if (UsbKeyboardDevice->CurKeyChar == 0) {
|
||||
|
||||
if (EFI_ERROR (USBKeyboardCheckForKey (UsbKeyboardDevice))) {
|
||||
return ;
|
||||
}
|
||||
}
|
||||
//
|
||||
// If has key pending, signal the event.
|
||||
//
|
||||
gBS->SignalEvent (Event);
|
||||
}
|
||||
|
||||
|
||||
STATIC
|
||||
EFI_STATUS
|
||||
USBKeyboardCheckForKey (
|
||||
IN USB_KB_DEV *UsbKeyboardDevice
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
Check whether there is key pending.
|
||||
|
||||
Arguments:
|
||||
UsbKeyboardDevice The USB_KB_DEV instance.
|
||||
|
||||
Returns:
|
||||
EFI_SUCCESS - Success
|
||||
--*/
|
||||
{
|
||||
EFI_STATUS Status;
|
||||
UINT8 KeyChar;
|
||||
|
||||
//
|
||||
// Fetch raw data from the USB keyboard input,
|
||||
// and translate it into ASCII data.
|
||||
//
|
||||
Status = USBParseKey (UsbKeyboardDevice, &KeyChar);
|
||||
if (EFI_ERROR (Status)) {
|
||||
return Status;
|
||||
}
|
||||
|
||||
UsbKeyboardDevice->CurKeyChar = KeyChar;
|
||||
return EFI_SUCCESS;
|
||||
}
|
||||
|
||||
VOID
|
||||
KbdReportStatusCode (
|
||||
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,
|
||||
IN EFI_STATUS_CODE_TYPE CodeType,
|
||||
IN EFI_STATUS_CODE_VALUE Value
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
Report Status Code in Usb Bot Driver
|
||||
|
||||
Arguments:
|
||||
DevicePath - Use this to get Device Path
|
||||
CodeType - Status Code Type
|
||||
CodeValue - Status Code Value
|
||||
|
||||
Returns:
|
||||
None
|
||||
|
||||
--*/
|
||||
{
|
||||
|
||||
REPORT_STATUS_CODE_WITH_DEVICE_PATH (
|
||||
CodeType,
|
||||
Value,
|
||||
DevicePath
|
||||
);
|
||||
}
|
||||
Reference in New Issue
Block a user