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authorRussell King <rmk+kernel@armlinux.org.uk>2020-07-21 12:04:51 +0100
committerDavid S. Miller <davem@davemloft.net>2020-07-21 15:46:51 -0700
commit93eaceb0fcf87b7f70924f9da3ec27e3c73be53d (patch)
tree49f780f8dfb3c20617cb86578df0c490a729eeec /drivers/net/phy
parent7137e18f6f889a67046d5004e1690a32d7d2108d (diff)
downloadlinux-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.c37
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.
*