From 8edb12713ee82eab3614bd216b13f5a244da9fbf Mon Sep 17 00:00:00 2001 From: Corentin Labbe Date: Fri, 24 May 2019 10:20:14 +0200 Subject: [PATCH] net: ethernet: stmmac: dwmac-sun8i: Enable control of loopback This patch enable use of set_mac_loopback in dwmac-sun8i Signed-off-by: Corentin Labbe Signed-off-by: Jose Abreu Cc: Joao Pinto Cc: David S. Miller Cc: Giuseppe Cavallaro Cc: Alexandre Torgue Signed-off-by: David S. Miller --- drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c index ba124a4d..3c7b779 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c @@ -986,6 +986,18 @@ static void sun8i_dwmac_exit(struct platform_device *pdev, void *priv) regulator_disable(gmac->regulator); } +static void sun8i_dwmac_set_mac_loopback(void __iomem *ioaddr, bool enable) +{ + u32 value = readl(ioaddr + EMAC_BASIC_CTL0); + + if (enable) + value |= EMAC_LOOPBACK; + else + value &= ~EMAC_LOOPBACK; + + writel(value, ioaddr + EMAC_BASIC_CTL0); +} + static const struct stmmac_ops sun8i_dwmac_ops = { .core_init = sun8i_dwmac_core_init, .set_mac = sun8i_dwmac_set_mac, @@ -995,6 +1007,7 @@ static const struct stmmac_ops sun8i_dwmac_ops = { .flow_ctrl = sun8i_dwmac_flow_ctrl, .set_umac_addr = sun8i_dwmac_set_umac_addr, .get_umac_addr = sun8i_dwmac_get_umac_addr, + .set_mac_loopback = sun8i_dwmac_set_mac_loopback, }; static struct mac_device_info *sun8i_dwmac_setup(void *ppriv) -- 2.7.4