github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-24 23:22:31 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

r8169: add PHY c45 ops for MDIO_MMD_VENDOR2 registers

Browse Source 
The integrated PHYs on chip versions from RTL8168g allow to address
MDIO_MMD_VEND2 registers. All c22 standard registers are mapped to
MDIO_MMD_VEND2 registers. So far the paging mechanism is used to
address PHY registers. Add support for c45 ops to address MDIO_MMD_VEND2
registers directly, w/o the paging.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/d6f97eaa-0f13-468f-89cb-75a41087bc4a@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Heiner Kallweit 2025-02-13 20:15:42 +01:00 committed by Jakub Kicinski
parent 412723d54a
commit 853e80369c
1 changed files with 32 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
drivers/net/ethernet/realtek/r8169_main.c
View File

@ -5200,6 +5200,33 @@ static int r8169_mdio_write_reg(struct mii_bus *mii_bus, int phyaddr,
return 0;
}
static int r8169_mdio_read_reg_c45(struct mii_bus *mii_bus, int addr,
int devnum, int regnum)
{
struct rtl8169_private *tp = mii_bus->priv;
if (addr > 0)
return -ENODEV;
if (devnum == MDIO_MMD_VEND2 && regnum > MDIO_STAT2)
return r8168_phy_ocp_read(tp, regnum);
return 0;
}
static int r8169_mdio_write_reg_c45(struct mii_bus *mii_bus, int addr,
int devnum, int regnum, u16 val)
{
struct rtl8169_private *tp = mii_bus->priv;
if (addr > 0 || devnum != MDIO_MMD_VEND2 || regnum <= MDIO_STAT2)
return -ENODEV;
r8168_phy_ocp_write(tp, regnum, val);
return 0;
}
static int r8169_mdio_register(struct rtl8169_private *tp)
{
struct pci_dev *pdev = tp->pci_dev;
@ -5230,6 +5257,11 @@ static int r8169_mdio_register(struct rtl8169_private *tp)
new_bus->read = r8169_mdio_read_reg;
new_bus->write = r8169_mdio_write_reg;
if (tp->mac_version >= RTL_GIGA_MAC_VER_40) {
new_bus->read_c45 = r8169_mdio_read_reg_c45;
new_bus->write_c45 = r8169_mdio_write_reg_c45;
}
ret = devm_mdiobus_register(&pdev->dev, new_bus);
if (ret)
return ret;