1df5fb2d83
This driver is used to simulate a keyboard. For example, user could read GPIO setting or data from RAM address. If the value matches the expected pattern, it could trigger a key pressed event. User needs to implement hooks of PLATFORM_VIRTUAL_KBD_PROTOCOL. There're 4 hooks in this protocol. Register(): Quote the interface that user needs. For example, user needs to locate GPIO protocol if he wants to simulate a GPIO value as a key. Reset(): Do the initialization before reading value. Query(): Read value. If the value matches the expected pattern, trigger a key pressed event. Clear(): Clean the value if necessary. Cc: Leif Lindholm <leif.lindholm@linaro.org> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
/** @file
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Copyright (c) 2018, Linaro. All rights reserved.
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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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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**/
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#ifndef __PLATFORM_VIRTUAL_KEYBOARD_H__
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#define __PLATFORM_VIRTUAL_KEYBOARD_H__
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//
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// Protocol interface structure
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//
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typedef struct _PLATFORM_VIRTUAL_KBD_PROTOCOL PLATFORM_VIRTUAL_KBD_PROTOCOL;
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typedef struct _VIRTUAL_KBD_KEY VIRTUAL_KBD_KEY;
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#define VIRTUAL_KEYBOARD_KEY_SIGNATURE SIGNATURE_32 ('v', 'k', 'b', 'd')
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struct _VIRTUAL_KBD_KEY {
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UINTN Signature;
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EFI_INPUT_KEY Key;
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};
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typedef
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EFI_STATUS
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(EFIAPI *PLATFORM_VIRTUAL_KBD_REGISTER) (
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IN VOID
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);
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typedef
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EFI_STATUS
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(EFIAPI *PLATFORM_VIRTUAL_KBD_RESET) (
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IN VOID
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);
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typedef
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BOOLEAN
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(EFIAPI *PLATFORM_VIRTUAL_KBD_QUERY) (
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IN VIRTUAL_KBD_KEY *VirtualKey
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);
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typedef
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EFI_STATUS
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(EFIAPI *PLATFORM_VIRTUAL_KBD_CLEAR) (
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IN VIRTUAL_KBD_KEY *VirtualKey
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);
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struct _PLATFORM_VIRTUAL_KBD_PROTOCOL {
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PLATFORM_VIRTUAL_KBD_REGISTER Register;
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PLATFORM_VIRTUAL_KBD_RESET Reset;
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PLATFORM_VIRTUAL_KBD_QUERY Query;
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PLATFORM_VIRTUAL_KBD_CLEAR Clear;
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};
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extern EFI_GUID gPlatformVirtualKeyboardProtocolGuid;
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#endif /* __PLATFORM_VIRTUAL_KEYBOARD_H__ */
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