From 8089a96f601bdfe3e1b41d14bb703aafaf1b8f34 Mon Sep 17 00:00:00 2001 From: Iyappan Subramanian Date: Mon, 25 Jul 2016 17:12:41 -0700 Subject: drivers: net: xgene: Add backward compatibility This patch adds xgene_enet_check_phy_hanlde() function that checks whether MDIO driver is probed successfully and sets pdata->mdio_driver to true. If MDIO driver is not probed, ethernet driver falls back to backward compatibility mode. Since enum xgene_enet_cmd is used by MDIO driver, removing this from ethernet driver. Signed-off-by: Iyappan Subramanian Tested-by: Fushen Chen Tested-by: Toan Le Signed-off-by: David S. Miller --- drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c') diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c b/drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c index 03a70c58bb9d..d12e9cbae820 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c @@ -366,7 +366,9 @@ static void xgene_sgmac_init(struct xgene_enet_pdata *p) u32 cfg_bypass_reg, rx_dv_gate_reg; u32 data, offset; - xgene_sgmac_reset(p); + if (!(p->enet_id == XGENE_ENET2 && p->mdio_driver)) + xgene_sgmac_reset(p); + xgene_sgmii_enable_autoneg(p); xgene_sgmac_set_speed(p); xgene_sgmac_set_mac_addr(p); @@ -445,6 +447,11 @@ static int xgene_enet_reset(struct xgene_enet_pdata *p) if (!xgene_ring_mgr_init(p)) return -ENODEV; + if (p->mdio_driver && p->enet_id == XGENE_ENET2) { + xgene_enet_config_ring_if_assoc(p); + return 0; + } + if (p->enet_id == XGENE_ENET2) xgene_enet_wr_clkrst_csr(p, XGENET_CONFIG_REG_ADDR, SGMII_EN); -- cgit v1.2.3-59-g8ed1b