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nexedi
linux
Commits
42f70b95
Commit
42f70b95
authored
Aug 29, 2004
by
Russell King
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[SERIAL] Move XR16C850 Tx/Rx trigger level setup to startup code
parent
f5b17e99
Changes
1
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17 additions
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17 deletions
+17
-17
drivers/serial/8250.c
drivers/serial/8250.c
+17
-17
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drivers/serial/8250.c
View file @
42f70b95
...
...
@@ -1258,6 +1258,23 @@ static int serial8250_startup(struct uart_port *port)
return
-
ENODEV
;
}
/*
* For a XR16C850, we need to set the trigger levels
*/
if
(
up
->
port
.
type
==
PORT_16850
)
{
unsigned
char
fctr
;
serial_outp
(
up
,
UART_LCR
,
0xbf
);
fctr
=
serial_inp
(
up
,
UART_FCTR
)
&
~
(
UART_FCTR_RX
|
UART_FCTR_TX
);
serial_outp
(
up
,
UART_FCTR
,
fctr
|
UART_FCTR_TRGD
|
UART_FCTR_RX
);
serial_outp
(
up
,
UART_TRG
,
UART_TRG_96
);
serial_outp
(
up
,
UART_FCTR
,
fctr
|
UART_FCTR_TRGD
|
UART_FCTR_TX
);
serial_outp
(
up
,
UART_TRG
,
UART_TRG_96
);
serial_outp
(
up
,
UART_LCR
,
0
);
}
/*
* If the "interrupt" for this port doesn't correspond with any
* hardware interrupt, we use a timer-based system. The original
...
...
@@ -1593,23 +1610,6 @@ serial8250_pm(struct uart_port *port, unsigned int state,
*/
serial_outp
(
up
,
UART_LCR
,
0xBF
);
serial_outp
(
up
,
UART_EFR
,
0
);
/*
* For a XR16C850, we need to set the trigger levels
*/
if
(
up
->
port
.
type
==
PORT_16850
)
{
unsigned
char
fctr
;
fctr
=
serial_inp
(
up
,
UART_FCTR
)
&
~
(
UART_FCTR_RX
|
UART_FCTR_TX
);
serial_outp
(
up
,
UART_FCTR
,
fctr
|
UART_FCTR_TRGD
|
UART_FCTR_RX
);
serial_outp
(
up
,
UART_TRG
,
UART_TRG_96
);
serial_outp
(
up
,
UART_FCTR
,
fctr
|
UART_FCTR_TRGD
|
UART_FCTR_TX
);
serial_outp
(
up
,
UART_TRG
,
UART_TRG_96
);
}
serial_outp
(
up
,
UART_LCR
,
0
);
}
...
...
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