diff options
| author | Russell King <rmk+kernel@armlinux.org.uk> | 2020-07-21 12:04:51 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-07-21 15:46:51 -0700 |
| commit | 93eaceb0fcf87b7f70924f9da3ec27e3c73be53d (patch) | |
| tree | 49f780f8dfb3c20617cb86578df0c490a729eeec /drivers/net/phy | |
| parent | 7137e18f6f889a67046d5004e1690a32d7d2108d (diff) | |
| download | linux-93eaceb0fcf87b7f70924f9da3ec27e3c73be53d.tar.bz2 | |
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: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy')
| -rw-r--r-- | drivers/net/phy/phylink.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c index b57cd2142786..32b4bd6a5b55 100644 --- a/drivers/net/phy/phylink.c +++ b/drivers/net/phy/phylink.c @@ -2443,6 +2443,43 @@ 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. * |