EmbeddedPkg: Clarify the declaration of SerialPortSetControl()
Rework of PL011UartSetControl() as a consequence as well as update of function header comment blocks. 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@16251 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
committed by
oliviermartin
parent
5f81a62094
commit
ab71619108
@@ -29,15 +29,35 @@
|
||||
#include <Protocol/SerialIo.h>
|
||||
|
||||
/**
|
||||
Set the serial device control bits.
|
||||
|
||||
@return Always return EFI_UNSUPPORTED.
|
||||
Assert or deassert the control signals on a serial port.
|
||||
The following control signals are set according their bit settings :
|
||||
. Request to Send
|
||||
. Data Terminal Ready
|
||||
|
||||
@param[in] Control The following bits are taken into account :
|
||||
. EFI_SERIAL_REQUEST_TO_SEND : assert/deassert the
|
||||
"Request To Send" control signal if this bit is
|
||||
equal to one/zero.
|
||||
. EFI_SERIAL_DATA_TERMINAL_READY : assert/deassert
|
||||
the "Data Terminal Ready" control signal if this
|
||||
bit is equal to one/zero.
|
||||
. EFI_SERIAL_HARDWARE_LOOPBACK_ENABLE : enable/disable
|
||||
the hardware loopback if this bit is equal to
|
||||
one/zero.
|
||||
. EFI_SERIAL_SOFTWARE_LOOPBACK_ENABLE : not supported.
|
||||
. EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE : enable/
|
||||
disable the hardware flow control based on CTS (Clear
|
||||
To Send) and RTS (Ready To Send) control signals.
|
||||
|
||||
@retval RETURN_SUCCESS The new control bits were set on the serial device.
|
||||
@retval RETURN_UNSUPPORTED The serial device does not support this operation.
|
||||
|
||||
**/
|
||||
RETURN_STATUS
|
||||
EFIAPI
|
||||
SerialPortSetControl (
|
||||
IN UINT32 Control
|
||||
IN UINT32 Control
|
||||
);
|
||||
|
||||
/**
|
||||
|
Reference in New Issue
Block a user