Commit 93eaceb0 authored by Russell King's avatar Russell King Committed by David S. Miller
Browse files

net: phylink: add interface to configure clause 22 PCS PHY 



Add an interface to configure the advertisement for a clause 22 PCS
PHY, and set the AN enable flag in the BMCR appropriately.

Reviewed-by: default avatarIoana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: default avatarRussell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 7137e18f

drivers/net/phy/phylink.c

+37 −0
Original line number Diff line number Diff line
@@ -2442,6 +2442,43 @@ int phylink_mii_c22_pcs_set_advertisement(struct mdio_device *pcs, 
}

EXPORT_SYMBOL_GPL(phylink_mii_c22_pcs_set_advertisement);



/**

 * phylink_mii_c22_pcs_config() - configure clause 22 PCS

 * @pcs: a pointer to a &struct mdio_device.

 * @mode: link autonegotiation mode

 * @interface: the PHY interface mode being configured

 * @advertising: the ethtool advertisement mask

 *

 * Configure a Clause 22 PCS PHY with the appropriate negotiation

 * parameters for the @mode, @interface and @advertising parameters.

 * Returns negative error number on failure, zero if the advertisement

 * has not changed, or positive if there is a change.

 */

int phylink_mii_c22_pcs_config(struct mdio_device *pcs, unsigned int mode,

			       phy_interface_t interface,

			       const unsigned long *advertising)

{

	bool changed;

	u16 bmcr;

	int ret;



	ret = phylink_mii_c22_pcs_set_advertisement(pcs, interface,

						    advertising);

	if (ret < 0)

		return ret;



	changed = ret > 0;



	bmcr = mode == MLO_AN_INBAND ? BMCR_ANENABLE : 0;

	ret = mdiobus_modify(pcs->bus, pcs->addr, MII_BMCR,

			     BMCR_ANENABLE, bmcr);

	if (ret < 0)

		return ret;



	return changed ? 1 : 0;

}

EXPORT_SYMBOL_GPL(phylink_mii_c22_pcs_config);



/**

 * phylink_mii_c22_pcs_an_restart() - restart 802.3z autonegotiation

 * @pcs: a pointer to a &struct mdio_device.

include/linux/phylink.h

+3 −0
Original line number Diff line number Diff line
@@ -478,6 +478,9 @@ void phylink_mii_c22_pcs_get_state(struct mdio_device *pcs, 
int phylink_mii_c22_pcs_set_advertisement(struct mdio_device *pcs,

					  phy_interface_t interface,

					  const unsigned long *advertising);

int phylink_mii_c22_pcs_config(struct mdio_device *pcs, unsigned int mode,

			       phy_interface_t interface,

			       const unsigned long *advertising);

void phylink_mii_c22_pcs_an_restart(struct mdio_device *pcs);



void phylink_mii_c45_pcs_get_state(struct mdio_device *pcs,