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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: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Heiner Kallweit 2019-08-15 14:12:55 +02:00 committed by David S. Miller
parent 2441ba4806
commit 5b3f13950c
1 changed files with 43 additions and 0 deletions
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43
drivers/net/phy/realtek.c
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@ -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",