Commit afd62209 authored by Ioana Ciornei's avatar Ioana Ciornei Committed by David S. Miller
Browse files

net: phylink: add helper function to decode USXGMII word 



With the new addition of the USXGMII link partner ability constants we
can now introduce a phylink helper that decodes the USXGMII word and
populates the appropriate fields in the phylink_link_state structure
based on them.

Signed-off-by: default avatarIoana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: default avatarRussell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d6043299

drivers/net/phy/phylink.c

+43 −0
Original line number Diff line number Diff line
@@ -2320,6 +2320,49 @@ static void phylink_decode_sgmii_word(struct phylink_link_state *state, 
		state->duplex = DUPLEX_HALF;

}



/**

 * phylink_decode_usxgmii_word() - decode the USXGMII word from a MAC PCS

 * @state: a pointer to a struct phylink_link_state.

 * @lpa: a 16 bit value which stores the USXGMII auto-negotiation word

 *

 * Helper for MAC PCS supporting the USXGMII protocol and the auto-negotiation

 * code word.  Decode the USXGMII code word and populate the corresponding fields

 * (speed, duplex) into the phylink_link_state structure.

 */

void phylink_decode_usxgmii_word(struct phylink_link_state *state,

				 uint16_t lpa)

{

	switch (lpa & MDIO_USXGMII_SPD_MASK) {

	case MDIO_USXGMII_10:

		state->speed = SPEED_10;

		break;

	case MDIO_USXGMII_100:

		state->speed = SPEED_100;

		break;

	case MDIO_USXGMII_1000:

		state->speed = SPEED_1000;

		break;

	case MDIO_USXGMII_2500:

		state->speed = SPEED_2500;

		break;

	case MDIO_USXGMII_5000:

		state->speed = SPEED_5000;

		break;

	case MDIO_USXGMII_10G:

		state->speed = SPEED_10000;

		break;

	default:

		state->link = false;

		return;

	}



	if (lpa & MDIO_USXGMII_FULL_DUPLEX)

		state->duplex = DUPLEX_FULL;

	else

		state->duplex = DUPLEX_HALF;

}

EXPORT_SYMBOL_GPL(phylink_decode_usxgmii_word);



/**

 * phylink_mii_c22_pcs_get_state() - read the MAC PCS state

 * @pcs: a pointer to a &struct mdio_device.

include/linux/phylink.h

+3 −0
Original line number Diff line number Diff line
@@ -490,4 +490,7 @@ void phylink_mii_c22_pcs_an_restart(struct mdio_device *pcs); 


void phylink_mii_c45_pcs_get_state(struct mdio_device *pcs,

				   struct phylink_link_state *state);



void phylink_decode_usxgmii_word(struct phylink_link_state *state,

				 uint16_t lpa);

#endif

CRA Git | Maintained and supported by SUSTech CRA and CCSE