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Commit 364e9d77 authored by Andrew Lunn's avatar Andrew Lunn Committed by David S. Miller
Browse files

net: dsa: mv88e6xxx: Power on/off SERDES on cmode change 



The 6390 family has a number of SERDES interfaces per port. When the
cmode changes, eg 1000Base-X to XAUI, the SERDES interface in use will
also change. Power down the old SERDES interface and power up the new
SERDES interface.

Signed-off-by: default avatarAndrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 2d2e1dd2

drivers/net/dsa/mv88e6xxx/port.c

+9 −0
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@ 


#include "chip.h"

#include "port.h"

#include "serdes.h"



int mv88e6xxx_port_read(struct mv88e6xxx_chip *chip, int port, int reg,

			u16 *val)
@@ -372,6 +373,10 @@ int mv88e6390x_port_set_cmode(struct mv88e6xxx_chip *chip, int port, 
		cmode = 0;

	}



	err = mv88e6390_serdes_power(chip, port, false);

	if (err)

		return err;



	if (cmode) {

		err = mv88e6xxx_port_read(chip, port, MV88E6XXX_PORT_STS, &reg);

		if (err)
@@ -383,6 +388,10 @@ int mv88e6390x_port_set_cmode(struct mv88e6xxx_chip *chip, int port, 
		err = mv88e6xxx_port_write(chip, port, MV88E6XXX_PORT_STS, reg);

		if (err)

			return err;



		err = mv88e6390_serdes_power(chip, port, true);

		if (err)

			return err;

	}



	chip->ports[port].cmode = cmode;