diff options
Diffstat (limited to 'drivers/net/ethernet/freescale/enetc/enetc_pci_mdio.c')
| -rw-r--r-- | drivers/net/ethernet/freescale/enetc/enetc_pci_mdio.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pci_mdio.c b/drivers/net/ethernet/freescale/enetc/enetc_pci_mdio.c index a1b595bd7993..e108cac8288d 100644 --- a/drivers/net/ethernet/freescale/enetc/enetc_pci_mdio.c +++ b/drivers/net/ethernet/freescale/enetc/enetc_pci_mdio.c @@ -4,11 +4,35 @@ #include <linux/of_mdio.h> #include "enetc_pf.h" +#define NETC_EMDIO_VEN_ID 0x1131 +#define NETC_EMDIO_DEV_ID 0xee00 #define ENETC_MDIO_DEV_ID 0xee01 #define ENETC_MDIO_DEV_NAME "FSL PCIe IE Central MDIO" #define ENETC_MDIO_BUS_NAME ENETC_MDIO_DEV_NAME " Bus" #define ENETC_MDIO_DRV_NAME ENETC_MDIO_DEV_NAME " driver" +DEFINE_STATIC_KEY_FALSE(enetc_has_err050089); +EXPORT_SYMBOL_GPL(enetc_has_err050089); + +static void enetc_emdio_enable_err050089(struct pci_dev *pdev) +{ + if (pdev->vendor == PCI_VENDOR_ID_FREESCALE && + pdev->device == ENETC_MDIO_DEV_ID) { + static_branch_inc(&enetc_has_err050089); + dev_info(&pdev->dev, "Enabled ERR050089 workaround\n"); + } +} + +static void enetc_emdio_disable_err050089(struct pci_dev *pdev) +{ + if (pdev->vendor == PCI_VENDOR_ID_FREESCALE && + pdev->device == ENETC_MDIO_DEV_ID) { + static_branch_dec(&enetc_has_err050089); + if (!static_key_enabled(&enetc_has_err050089.key)) + dev_info(&pdev->dev, "Disabled ERR050089 workaround\n"); + } +} + static int enetc_pci_mdio_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { @@ -62,6 +86,8 @@ static int enetc_pci_mdio_probe(struct pci_dev *pdev, goto err_pci_mem_reg; } + enetc_emdio_enable_err050089(pdev); + err = of_mdiobus_register(bus, dev->of_node); if (err) goto err_mdiobus_reg; @@ -71,6 +97,7 @@ static int enetc_pci_mdio_probe(struct pci_dev *pdev, return 0; err_mdiobus_reg: + enetc_emdio_disable_err050089(pdev); pci_release_region(pdev, 0); err_pci_mem_reg: pci_disable_device(pdev); @@ -88,6 +115,9 @@ static void enetc_pci_mdio_remove(struct pci_dev *pdev) struct enetc_mdio_priv *mdio_priv; mdiobus_unregister(bus); + + enetc_emdio_disable_err050089(pdev); + mdio_priv = bus->priv; iounmap(mdio_priv->hw->port); pci_release_region(pdev, 0); @@ -96,6 +126,7 @@ static void enetc_pci_mdio_remove(struct pci_dev *pdev) static const struct pci_device_id enetc_pci_mdio_id_table[] = { { PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, ENETC_MDIO_DEV_ID) }, + { PCI_DEVICE(NETC_EMDIO_VEN_ID, NETC_EMDIO_DEV_ID) }, { 0, } /* End of table. */ }; MODULE_DEVICE_TABLE(pci, enetc_pci_mdio_id_table); |