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.cior...@nxp.com>
Signed-off-by: Russell King <rmk+ker...@armlinux.org.uk>
---
drivers/net/phy/phylink.c | 37 +++++++++++++++++++++++++++++++++++++
include/linux/phylink.h | 3 +++
2 files changed, 40 insertions(+)
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
@@ -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.
diff --git a/include/linux/phylink.h b/include/linux/phylink.h
index 057f78263a46..1aad2aea4610 100644
--- a/include/linux/phylink.h
+++ b/include/linux/phylink.h
@@ -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,
--
2.20.1
