xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

net: phy: make phy_(read|write)_mmd() generic MMD accessors

Browse Source 
Make phy_(read|write)_mmd() generic 802.3 clause 45 register accessors
for both Clause 22 and Clause 45 PHYs, using either the direct register
reading for Clause 45, or the indirect method for Clause 22 PHYs.
Allow this behaviour to be overriden by PHY drivers where necessary.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Russell King
2017-03-21 16:36:43 +00:00
committed by David S. Miller
parent 9860118b58
commit 1ee6b9bc62
2 changed files with 49 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
drivers/net/phy/phy-core.c
View File

@@ -69,11 +69,18 @@ EXPORT_SYMBOL(phy_read_mmd_indirect);
*/
int phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum)
{
if (!phydev->is_c45)
return -EOPNOTSUPP;
if (regnum > (u16)~0 || devad > 32)
return -EINVAL;
return mdiobus_read(phydev->mdio.bus, phydev->mdio.addr,
MII_ADDR_C45 | (devad << 16) | (regnum & 0xffff));
if (phydev->drv->read_mmd)
return phydev->drv->read_mmd(phydev, devad, regnum);
if (phydev->is_c45) {
u32 addr = MII_ADDR_C45 | (devad << 16) | (regnum & 0xffff);
return mdiobus_read(phydev->mdio.bus, phydev->mdio.addr, addr);
}
return phy_read_mmd_indirect(phydev, regnum, devad);
}
EXPORT_SYMBOL(phy_read_mmd);
@@ -125,11 +132,21 @@ EXPORT_SYMBOL(phy_write_mmd_indirect);
*/
int phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val)
{
if (!phydev->is_c45)
return -EOPNOTSUPP;
if (regnum > (u16)~0 || devad > 32)
return -EINVAL;
regnum = MII_ADDR_C45 | ((devad & 0x1f) << 16) | (regnum & 0xffff);
if (phydev->drv->read_mmd)
return phydev->drv->write_mmd(phydev, devad, regnum, val);
return mdiobus_write(phydev->mdio.bus, phydev->mdio.addr, regnum, val);
if (phydev->is_c45) {
u32 addr = MII_ADDR_C45 | (devad << 16) | (regnum & 0xffff);
return mdiobus_write(phydev->mdio.bus, phydev->mdio.addr,
addr, val);
}
phy_write_mmd_indirect(phydev, regnum, devad, val);
return 0;
}
EXPORT_SYMBOL(phy_write_mmd);