diff mbox series

[net-next,v4,3/5] net: phy: c45: add a separate function to read BASE-T1 abilities

Message ID 20230719064258.9746-4-eichest@gmail.com (mailing list archive)
State Accepted
Commit eba2e4c2faef618b6e33dfdba918c76727f891b5
Delegated to: Netdev Maintainers
Headers show
Series Add a driver for the Marvell 88Q2110 PHY | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 1741 this patch: 1741
netdev/cc_maintainers success CCed 8 of 8 maintainers
netdev/build_clang success Errors and warnings before: 1644 this patch: 1644
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 1750 this patch: 1750
netdev/checkpatch warning WARNING: line length of 83 exceeds 80 columns
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Stefan Eichenberger July 19, 2023, 6:42 a.m. UTC 
Add a separate function to read the BASE-T1 abilities. Some PHYs do not
indicate the availability of the extended BASE-T1 ability register, so
this function must be called separately.

Signed-off-by: Stefan Eichenberger <eichest@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
---
 drivers/net/phy/phy-c45.c | 44 +++++++++++++++++++++++++++------------
 include/linux/phy.h       |  1 +
 2 files changed, 32 insertions(+), 13 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/phy/phy-c45.c b/drivers/net/phy/phy-c45.c
index b73c428a15663..58a6bbbe8a70c 100644
--- a/drivers/net/phy/phy-c45.c
+++ b/drivers/net/phy/phy-c45.c
@@ -881,6 +881,36 @@  int genphy_c45_an_config_eee_aneg(struct phy_device *phydev)
 	return genphy_c45_write_eee_adv(phydev, phydev->advertising_eee);
 }
 
+/**
+ * genphy_c45_pma_baset1_read_abilities - read supported baset1 link modes from PMA
+ * @phydev: target phy_device struct
+ *
+ * Read the supported link modes from the extended BASE-T1 ability register
+ */
+int genphy_c45_pma_baset1_read_abilities(struct phy_device *phydev)
+{
+	int val;
+
+	val = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_PMA_PMD_BT1);
+	if (val < 0)
+		return val;
+
+	linkmode_mod_bit(ETHTOOL_LINK_MODE_10baseT1L_Full_BIT,
+			 phydev->supported,
+			 val & MDIO_PMA_PMD_BT1_B10L_ABLE);
+
+	val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_T1_STAT);
+	if (val < 0)
+		return val;
+
+	linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
+			 phydev->supported,
+			 val & MDIO_AN_STAT1_ABLE);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(genphy_c45_pma_baset1_read_abilities);
+
 /**
  * genphy_c45_pma_read_abilities - read supported link modes from PMA
  * @phydev: target phy_device struct
@@ -977,21 +1007,9 @@  int genphy_c45_pma_read_abilities(struct phy_device *phydev)
 		}
 
 		if (val & MDIO_PMA_EXTABLE_BT1) {
-			val = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_PMA_PMD_BT1);
+			val = genphy_c45_pma_baset1_read_abilities(phydev);
 			if (val < 0)
 				return val;
-
-			linkmode_mod_bit(ETHTOOL_LINK_MODE_10baseT1L_Full_BIT,
-					 phydev->supported,
-					 val & MDIO_PMA_PMD_BT1_B10L_ABLE);
-
-			val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_T1_STAT);
-			if (val < 0)
-				return val;
-
-			linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
-					 phydev->supported,
-					 val & MDIO_AN_STAT1_ABLE);
 		}
 	}
 
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 11c1e91563d47..b254848a9c99a 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -1826,6 +1826,7 @@  int genphy_c45_an_config_aneg(struct phy_device *phydev);
 int genphy_c45_an_disable_aneg(struct phy_device *phydev);
 int genphy_c45_read_mdix(struct phy_device *phydev);
 int genphy_c45_pma_read_abilities(struct phy_device *phydev);
+int genphy_c45_pma_baset1_read_abilities(struct phy_device *phydev);
 int genphy_c45_read_eee_abilities(struct phy_device *phydev);
 int genphy_c45_pma_baset1_read_master_slave(struct phy_device *phydev);
 int genphy_c45_read_status(struct phy_device *phydev);