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Commit edc7ccbb authored by Andrew Lunn's avatar Andrew Lunn Committed by David S. Miller
Browse files

net: phy: Add helper to convert MII ADV register to a linkmode 



The phy_mii_ioctl can be used to write a value into the MII_ADVERTISE
register in the PHY. Since this changes the state of the PHY, we need
to make the same change to phydev->advertising. Add a helper which can
convert the register value to a linkmode.

Signed-off-by: default avatarAndrew Lunn <andrew@lunn.ch>
Reviewed-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Reviewed-by: default avatarMaxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c4fabb8b

include/linux/mii.h

+31 −0
Original line number Diff line number Diff line
@@ -303,6 +303,37 @@ static inline u32 mii_lpa_to_ethtool_lpa_x(u32 lpa) 
	return result | mii_adv_to_ethtool_adv_x(lpa);

}



/**

 * mii_adv_to_linkmode_adv_t

 * @advertising:pointer to destination link mode.

 * @adv: value of the MII_ADVERTISE register

 *

 * A small helper function that translates MII_ADVERTISE bits

 * to linkmode advertisement settings.

 */

static inline void mii_adv_to_linkmode_adv_t(unsigned long *advertising,

					     u32 adv)

{

	linkmode_zero(advertising);



	if (adv & ADVERTISE_10HALF)

		linkmode_set_bit(ETHTOOL_LINK_MODE_10baseT_Half_BIT,

				 advertising);

	if (adv & ADVERTISE_10FULL)

		linkmode_set_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT,

				 advertising);

	if (adv & ADVERTISE_100HALF)

		linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT,

				 advertising);

	if (adv & ADVERTISE_100FULL)

		linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT,

				 advertising);

	if (adv & ADVERTISE_PAUSE_CAP)

		linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT, advertising);

	if (adv & ADVERTISE_PAUSE_ASYM)

		linkmode_set_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, advertising);

}



/**

 * mii_advertise_flowctrl - get flow control advertisement flags

 * @cap: Flow control capabilities (FLOW_CTRL_RX, FLOW_CTRL_TX or both)