d2e7e385fc
Rework the PL011UartGetControl() function removing a TODO by the way. Update of the header comment blocks of (PL011Uart|SerialPort)GetControl() functions. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ronald Cron <ronald.cron@arm.com> Reviewed-By: Olivier Martin <olivier.martin@arm.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16252 6f19259b-4bc3-4df7-8a09-765794883524
80 lines
1.9 KiB
C
80 lines
1.9 KiB
C
/** @file
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Extended Serial I/O Port library functions
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Copyright (c) 2012, ARM Ltd. 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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#include <Base.h>
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#include <Library/SerialPortLib.h>
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#include <Library/SerialPortExtLib.h>
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/**
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Set the serial device control bits.
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@return Always return RETURN_UNSUPPORTED.
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**/
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RETURN_STATUS
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EFIAPI
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SerialPortSetControl (
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IN UINT32 Control
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)
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{
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return RETURN_UNSUPPORTED;
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}
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/**
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Get the serial device control bits.
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@param Control Control signals read from the serial device.
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@retval EFI_SUCCESS The control bits were read from the serial device.
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@retval EFI_DEVICE_ERROR The serial device is not functioning correctly.
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**/
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RETURN_STATUS
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EFIAPI
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SerialPortGetControl (
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OUT UINT32 *Control
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)
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{
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if (SerialPortPoll ()) {
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// If a character is pending don't set EFI_SERIAL_INPUT_BUFFER_EMPTY
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*Control = EFI_SERIAL_OUTPUT_BUFFER_EMPTY;
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} else {
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*Control = EFI_SERIAL_INPUT_BUFFER_EMPTY | EFI_SERIAL_OUTPUT_BUFFER_EMPTY;
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}
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return RETURN_SUCCESS;
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}
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/**
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Set the serial device attributes.
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@return Always return RETURN_UNSUPPORTED.
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**/
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RETURN_STATUS
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EFIAPI
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SerialPortSetAttributes (
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IN OUT UINT64 *BaudRate,
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IN OUT UINT32 *ReceiveFifoDepth,
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IN OUT UINT32 *Timeout,
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IN OUT EFI_PARITY_TYPE *Parity,
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IN OUT UINT8 *DataBits,
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IN OUT EFI_STOP_BITS_TYPE *StopBits
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)
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{
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return RETURN_UNSUPPORTED;
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}
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