Commit fd8825cd authored by Raju Lakkaraju's avatar Raju Lakkaraju Committed by David S. Miller
Browse files

net: phy: mxl-gpy: Add PHY Auto/MDI/MDI-X set driver for GPY211 chips 



Add support for MDI-X status and configuration for GPY211 chips

Signed-off-by: default avatarRaju Lakkaraju <Raju.Lakkaraju@microchip.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 7a495dde

drivers/net/phy/mxl-gpy.c

+71 −1
Original line number Diff line number Diff line
@@ -29,6 +29,10 @@ 
#define PHY_ID_GPY241BM		0x67C9DE80

#define PHY_ID_GPY245B		0x67C9DEC0



#define PHY_CTL1		0x13

#define PHY_CTL1_MDICD		BIT(3)

#define PHY_CTL1_MDIAB		BIT(2)

#define PHY_CTL1_AMDIX		BIT(0)

#define PHY_MIISTAT		0x18	/* MII state */

#define PHY_IMASK		0x19	/* interrupt mask */

#define PHY_ISTAT		0x1A	/* interrupt status */
@@ -59,6 +63,13 @@ 
#define PHY_FWV_MAJOR_MASK	GENMASK(11, 8)

#define PHY_FWV_MINOR_MASK	GENMASK(7, 0)



#define PHY_PMA_MGBT_POLARITY	0x82

#define PHY_MDI_MDI_X_MASK	GENMASK(1, 0)

#define PHY_MDI_MDI_X_NORMAL	0x3

#define PHY_MDI_MDI_X_AB	0x2

#define PHY_MDI_MDI_X_CD	0x1

#define PHY_MDI_MDI_X_CROSS	0x0



/* SGMII */

#define VSPEC1_SGMII_CTRL	0x08

#define VSPEC1_SGMII_CTRL_ANEN	BIT(12)		/* Aneg enable */
@@ -289,6 +300,33 @@ static bool gpy_sgmii_aneg_en(struct phy_device *phydev) 
	return (ret & VSPEC1_SGMII_CTRL_ANEN) ? true : false;

}



static int gpy_config_mdix(struct phy_device *phydev, u8 ctrl)

{

	int ret;

	u16 val;



	switch (ctrl) {

	case ETH_TP_MDI_AUTO:

		val = PHY_CTL1_AMDIX;

		break;

	case ETH_TP_MDI_X:

		val = (PHY_CTL1_MDIAB | PHY_CTL1_MDICD);

		break;

	case ETH_TP_MDI:

		val = 0;

		break;

	default:

		return 0;

	}



	ret =  phy_modify(phydev, PHY_CTL1, PHY_CTL1_AMDIX | PHY_CTL1_MDIAB |

			  PHY_CTL1_MDICD, val);

	if (ret < 0)

		return ret;



	return genphy_c45_restart_aneg(phydev);

}



static int gpy_config_aneg(struct phy_device *phydev)

{

	bool changed = false;
@@ -304,6 +342,10 @@ static int gpy_config_aneg(struct phy_device *phydev) 
			: genphy_c45_pma_setup_forced(phydev);

	}



	ret = gpy_config_mdix(phydev,  phydev->mdix_ctrl);

	if (ret < 0)

		return ret;



	ret = genphy_c45_an_config_aneg(phydev);

	if (ret < 0)

		return ret;
@@ -370,6 +412,34 @@ static int gpy_config_aneg(struct phy_device *phydev) 
			      VSPEC1_SGMII_CTRL_ANRS, VSPEC1_SGMII_CTRL_ANRS);

}



static int gpy_update_mdix(struct phy_device *phydev)

{

	int ret;



	ret = phy_read(phydev, PHY_CTL1);

	if (ret < 0)

		return ret;



	if (ret & PHY_CTL1_AMDIX)

		phydev->mdix_ctrl = ETH_TP_MDI_AUTO;

	else

		if (ret & PHY_CTL1_MDICD || ret & PHY_CTL1_MDIAB)

			phydev->mdix_ctrl = ETH_TP_MDI_X;

		else

			phydev->mdix_ctrl = ETH_TP_MDI;



	ret = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, PHY_PMA_MGBT_POLARITY);

	if (ret < 0)

		return ret;



	if ((ret & PHY_MDI_MDI_X_MASK) < PHY_MDI_MDI_X_NORMAL)

		phydev->mdix = ETH_TP_MDI_X;

	else

		phydev->mdix = ETH_TP_MDI;



	return 0;

}



static int gpy_update_interface(struct phy_device *phydev)

{

	int ret;
@@ -421,7 +491,7 @@ static int gpy_update_interface(struct phy_device *phydev) 
			return ret;

	}



	return 0;

	return gpy_update_mdix(phydev);

}



static int gpy_read_status(struct phy_device *phydev)