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Commit 5b3f1395 authored by Heiner Kallweit's avatar Heiner Kallweit Committed by David S. Miller
Browse files

net: phy: realtek: add support for EEE registers on integrated PHY's 



EEE-related registers on newer integrated PHY's have the standard
layout, but are accessible not via MMD but via vendor-specific
registers. Emulating the standard MMD registers allows to use the
generic functions for EEE control.

Signed-off-by: default avatarHeiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 2441ba48

drivers/net/phy/realtek.c

+43 −0
Original line number Diff line number Diff line
@@ -266,6 +266,45 @@ static int rtl8366rb_config_init(struct phy_device *phydev) 
	return ret;

}



static int rtlgen_read_mmd(struct phy_device *phydev, int devnum, u16 regnum)

{

	int ret;



	if (devnum == MDIO_MMD_PCS && regnum == MDIO_PCS_EEE_ABLE) {

		rtl821x_write_page(phydev, 0xa5c);

		ret = __phy_read(phydev, 0x12);

		rtl821x_write_page(phydev, 0);

	} else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_ADV) {

		rtl821x_write_page(phydev, 0xa5d);

		ret = __phy_read(phydev, 0x10);

		rtl821x_write_page(phydev, 0);

	} else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_LPABLE) {

		rtl821x_write_page(phydev, 0xa5d);

		ret = __phy_read(phydev, 0x11);

		rtl821x_write_page(phydev, 0);

	} else {

		ret = -EOPNOTSUPP;

	}



	return ret;

}



static int rtlgen_write_mmd(struct phy_device *phydev, int devnum, u16 regnum,

			    u16 val)

{

	int ret;



	if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_ADV) {

		rtl821x_write_page(phydev, 0xa5d);

		ret = __phy_write(phydev, 0x10, val);

		rtl821x_write_page(phydev, 0);

	} else {

		ret = -EOPNOTSUPP;

	}



	return ret;

}



static int rtl8125_get_features(struct phy_device *phydev)

{

	int val;
@@ -422,6 +461,8 @@ static struct phy_driver realtek_drvs[] = { 
		.resume		= genphy_resume,

		.read_page	= rtl821x_read_page,

		.write_page	= rtl821x_write_page,

		.read_mmd	= rtlgen_read_mmd,

		.write_mmd	= rtlgen_write_mmd,

	}, {

		.name		= "RTL8125 2.5Gbps internal",

		.match_phy_device = rtl8125_match_phy_device,
@@ -432,6 +473,8 @@ static struct phy_driver realtek_drvs[] = { 
		.resume		= genphy_resume,

		.read_page	= rtl821x_read_page,

		.write_page	= rtl821x_write_page,

		.read_mmd	= rtlgen_read_mmd,

		.write_mmd	= rtlgen_write_mmd,

	}, {

		PHY_ID_MATCH_EXACT(0x001cc961),

		.name		= "RTL8366RB Gigabit Ethernet",