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Commit 6ef05eb7 authored by Andrew Lunn's avatar Andrew Lunn Committed by David S. Miller
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net: phy: marvell: Refactor setting downshift into a helper 



The 1116r has code to set downshift. Refactor this into a helper, so
in future other marvell PHYs can use it.

Signed-off-by: default avatarAndrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent fecd5e91

drivers/net/phy/marvell.c

+19 −5
Original line number Diff line number Diff line
@@ -58,6 +58,7 @@ 
#define MII_M1011_PHY_SCR			0x10

#define MII_M1011_PHY_SCR_DOWNSHIFT_EN		BIT(11)

#define MII_M1011_PHY_SCR_DOWNSHIFT_SHIFT	12

#define MII_M1011_PHY_SRC_DOWNSHIFT_MASK	0x7800

#define MII_M1011_PHY_SCR_MDI			(0x0 << 5)

#define MII_M1011_PHY_SCR_MDI_X			(0x1 << 5)

#define MII_M1011_PHY_SCR_AUTO_CROSS		(0x3 << 5)
@@ -263,6 +264,23 @@ static int marvell_set_polarity(struct phy_device *phydev, int polarity) 
	return 0;

}



static int marvell_set_downshift(struct phy_device *phydev, bool enable,

				 u8 retries)

{

	int reg;



	reg = phy_read(phydev, MII_M1011_PHY_SCR);

	if (reg < 0)

		return reg;



	reg &= MII_M1011_PHY_SRC_DOWNSHIFT_MASK;

	reg |= ((retries - 1) << MII_M1011_PHY_SCR_DOWNSHIFT_SHIFT);

	if (enable)

		reg |= MII_M1011_PHY_SCR_DOWNSHIFT_EN;



	return phy_write(phydev, MII_M1011_PHY_SCR, reg);

}



static int marvell_config_aneg(struct phy_device *phydev)

{

	int err;
@@ -643,7 +661,6 @@ static int marvell_config_init(struct phy_device *phydev) 


static int m88e1116r_config_init(struct phy_device *phydev)

{

	int temp;

	int err;



	err = genphy_soft_reset(phydev);
@@ -660,10 +677,7 @@ static int m88e1116r_config_init(struct phy_device *phydev) 
	if (err < 0)

		return err;



	temp = phy_read(phydev, MII_M1011_PHY_SCR);

	temp |= (7 << MII_M1011_PHY_SCR_DOWNSHIFT_SHIFT);

	temp |= MII_M1011_PHY_SCR_DOWNSHIFT_EN;

	err = phy_write(phydev, MII_M1011_PHY_SCR, temp);

	err = marvell_set_downshift(phydev, true, 8);

	if (err < 0)

		return err;