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MdeModulePkg/Ps2Kb: ReadKeyStrokeEx always return key state 

Today's implementation only return key state when there is key.
But when user doesn't press any key, the key state cannot be
returned.

The patch changes the ReadKeyStrokeEx() to always return the
key state even there is no key pressed.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
This commit is contained in:
Ruiyu Ni 2018-01-16 16:21:42 +08:00
parent c095341cc4
commit c9e6803cf4
3 changed files with 54 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
MdeModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdCtrller.c
View File

@ -1,7 +1,7 @@
/** @file
Routines that access 8042 keyboard controller
Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
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
@ -1104,6 +1104,38 @@ UpdateStatusLights (
return Status;
}
/**
Initialize the key state.
@param ConsoleIn The KEYBOARD_CONSOLE_IN_DEV instance.
@param KeyState A pointer to receive the key state information.
**/
VOID
InitializeKeyState (
IN KEYBOARD_CONSOLE_IN_DEV *ConsoleIn,
OUT EFI_KEY_STATE *KeyState
)
{
KeyState->KeyShiftState = EFI_SHIFT_STATE_VALID
| (ConsoleIn->LeftCtrl ? EFI_LEFT_CONTROL_PRESSED : 0)
| (ConsoleIn->RightCtrl ? EFI_RIGHT_CONTROL_PRESSED : 0)
| (ConsoleIn->LeftAlt ? EFI_LEFT_ALT_PRESSED : 0)
| (ConsoleIn->RightAlt ? EFI_RIGHT_ALT_PRESSED : 0)
| (ConsoleIn->LeftShift ? EFI_LEFT_SHIFT_PRESSED : 0)
| (ConsoleIn->RightShift ? EFI_RIGHT_SHIFT_PRESSED : 0)
| (ConsoleIn->LeftLogo ? EFI_LEFT_LOGO_PRESSED : 0)
| (ConsoleIn->RightLogo ? EFI_RIGHT_LOGO_PRESSED : 0)
| (ConsoleIn->Menu ? EFI_MENU_KEY_PRESSED : 0)
| (ConsoleIn->SysReq ? EFI_SYS_REQ_PRESSED : 0)
;
KeyState->KeyToggleState = EFI_TOGGLE_STATE_VALID
| (ConsoleIn->CapsLock ? EFI_CAPS_LOCK_ACTIVE : 0)
| (ConsoleIn->NumLock ? EFI_NUM_LOCK_ACTIVE : 0)
| (ConsoleIn->ScrollLock ? EFI_SCROLL_LOCK_ACTIVE : 0)
| (ConsoleIn->IsSupportPartialKey ? EFI_KEY_STATE_EXPOSED : 0)
;
}
/**
Get scancode from scancode buffer and translate into EFI-scancode and unicode defined by EFI spec.
@ -1316,27 +1348,9 @@ KeyGetchar (
//
// Save the Shift/Toggle state
//
KeyData.KeyState.KeyShiftState = (UINT32) (EFI_SHIFT_STATE_VALID
| (ConsoleIn->LeftCtrl ? EFI_LEFT_CONTROL_PRESSED : 0)
| (ConsoleIn->RightCtrl ? EFI_RIGHT_CONTROL_PRESSED : 0)
| (ConsoleIn->LeftAlt ? EFI_LEFT_ALT_PRESSED : 0)
| (ConsoleIn->RightAlt ? EFI_RIGHT_ALT_PRESSED : 0)
| (ConsoleIn->LeftShift ? EFI_LEFT_SHIFT_PRESSED : 0)
| (ConsoleIn->RightShift ? EFI_RIGHT_SHIFT_PRESSED : 0)
| (ConsoleIn->LeftLogo ? EFI_LEFT_LOGO_PRESSED : 0)
| (ConsoleIn->RightLogo ? EFI_RIGHT_LOGO_PRESSED : 0)
| (ConsoleIn->Menu ? EFI_MENU_KEY_PRESSED : 0)
| (ConsoleIn->SysReq ? EFI_SYS_REQ_PRESSED : 0)
);
KeyData.KeyState.KeyToggleState = (EFI_KEY_TOGGLE_STATE) (EFI_TOGGLE_STATE_VALID
| (ConsoleIn->CapsLock ? EFI_CAPS_LOCK_ACTIVE : 0)
| (ConsoleIn->NumLock ? EFI_NUM_LOCK_ACTIVE : 0)
| (ConsoleIn->ScrollLock ? EFI_SCROLL_LOCK_ACTIVE : 0)
| (ConsoleIn->IsSupportPartialKey ? EFI_KEY_STATE_EXPOSED : 0)
);
KeyData.Key.ScanCode = SCAN_NULL;
KeyData.Key.UnicodeChar = CHAR_NULL;
InitializeKeyState (ConsoleIn, &KeyData.KeyState);
KeyData.Key.ScanCode = SCAN_NULL;
KeyData.Key.UnicodeChar = CHAR_NULL;
//
// Key Pad "/" shares the same scancode as that of "/" except Key Pad "/" has E0 prefix

6
MdeModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KbdTextIn.c
View File

@ -2,7 +2,7 @@
Routines implements SIMPLE_TEXT_IN protocol's interfaces based on 8042 interfaces
provided by Ps2KbdCtrller.c.
Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
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
@ -165,6 +165,10 @@ KeyboardReadKeyStrokeWorker (
Status = EFI_DEVICE_ERROR;
} else {
Status = PopEfikeyBufHead (&ConsoleInDev->EfiKeyQueue, KeyData);
if (Status == EFI_NOT_READY) {
ZeroMem (&KeyData->Key, sizeof (KeyData->Key));
InitializeKeyState (ConsoleInDev, &KeyData->KeyState);
}
}
gBS->RestoreTPL (OldTpl);

14
MdeModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.h
View File

@ -1,7 +1,7 @@
/** @file
PS/2 keyboard driver header file
Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
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
@ -566,4 +566,16 @@ IsKeyRegistered (
IN EFI_KEY_DATA *InputData
);
/**
Initialize the key state.
@param ConsoleIn The KEYBOARD_CONSOLE_IN_DEV instance.
@param KeyState A pointer to receive the key state information.
**/
VOID
InitializeKeyState (
IN KEYBOARD_CONSOLE_IN_DEV *ConsoleIn,
OUT EFI_KEY_STATE *KeyState
);
#endif