Commit b63584c8 authored by Heiner Kallweit's avatar Heiner Kallweit Committed by David S. Miller
Browse files

net: phy: c45: add and use genphy_c45_read_eee_cap2 



Add and use genphy_c45_read_eee_cap2(), complementing
genphy_c45_read_eee_cap1().

Signed-off-by: default avatarHeiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ef6ee3a3

drivers/net/phy/phy-c45.c

+31 −0
Original line number Diff line number Diff line
@@ -830,6 +830,30 @@ static int genphy_c45_read_eee_cap1(struct phy_device *phydev) 
	return 0;

}



/**

 * genphy_c45_read_eee_cap2 - read supported EEE link modes from register 3.21

 * @phydev: target phy_device struct

 */

static int genphy_c45_read_eee_cap2(struct phy_device *phydev)

{

	int val;



	/* IEEE 802.3-2022 45.2.3.11 EEE control and capability 2

	 * (Register 3.21)

	 */

	val = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE2);

	if (val < 0)

		return val;



	/* IEEE 802.3-2022 45.2.3.11 says 9 bits are reserved. */

	if (val == 0xffff)

		return 0;



	mii_eee_cap2_mod_linkmode_sup_t(phydev->supported_eee, val);



	return 0;

}



/**

 * genphy_c45_read_eee_abilities - read supported EEE link modes

 * @phydev: target phy_device struct
@@ -848,6 +872,13 @@ int genphy_c45_read_eee_abilities(struct phy_device *phydev) 
			return val;

	}



	/* Same for cap2 (3.21) */

	if (linkmode_intersects(phydev->supported, PHY_EEE_CAP2_FEATURES)) {

		val = genphy_c45_read_eee_cap2(phydev);

		if (val)

			return val;

	}



	if (linkmode_test_bit(ETHTOOL_LINK_MODE_10baseT1L_Full_BIT,

			      phydev->supported)) {

		/* IEEE 802.3cg-2019 45.2.1.186b 10BASE-T1L PMA status register