From: Tony Lindgren Date: Thu, 15 Jan 2015 22:45:13 +0000 (-0800) Subject: net: davinci_emac: Fix ioremap for devices with MDIO within the EMAC address space X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a1594321a9bc55ad44e02b27773cb0ed05837531;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git net: davinci_emac: Fix ioremap for devices with MDIO within the EMAC address space Some devices like dm816x have the MDIO registers within the first EMAC instance address space. Let's fix the issue by allowing to pass an optional second IO range for the EMAC control register area. Cc: Brian Hutchinson Cc: Felipe Balbi Signed-off-by: Tony Lindgren Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c index e44c8d84a3c6..1e5ea81504f0 100644 --- a/drivers/net/ethernet/ti/davinci_emac.c +++ b/drivers/net/ethernet/ti/davinci_emac.c @@ -1890,7 +1890,7 @@ davinci_emac_of_get_pdata(struct platform_device *pdev, struct emac_priv *priv) static int davinci_emac_probe(struct platform_device *pdev) { int rc = 0; - struct resource *res; + struct resource *res, *res_ctrl; struct net_device *ndev; struct emac_priv *priv; unsigned long hw_ram_addr; @@ -1949,11 +1949,20 @@ static int davinci_emac_probe(struct platform_device *pdev) rc = PTR_ERR(priv->remap_addr); goto no_pdata; } + + res_ctrl = platform_get_resource(pdev, IORESOURCE_MEM, 1); + if (res_ctrl) { + priv->ctrl_base = + devm_ioremap_resource(&pdev->dev, res_ctrl); + if (IS_ERR(priv->ctrl_base)) + goto no_pdata; + } else { + priv->ctrl_base = priv->remap_addr + pdata->ctrl_mod_reg_offset; + } + priv->emac_base = priv->remap_addr + pdata->ctrl_reg_offset; ndev->base_addr = (unsigned long)priv->remap_addr; - priv->ctrl_base = priv->remap_addr + pdata->ctrl_mod_reg_offset; - hw_ram_addr = pdata->hw_ram_addr; if (!hw_ram_addr) hw_ram_addr = (u32 __force)res->start + pdata->ctrl_ram_offset;