From: Tony Lindgren Date: Wed, 28 Jan 2015 19:33:06 +0000 (-0800) Subject: net: davinci_emac: Get device MAC on 3517 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f276c0ce5d9256bb87e65f88ddea28a6a5eafdb2;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git net: davinci_emac: Get device MAC on 3517 Looks like on 3517 davinci_emac MAC address registers have a different layout compared to dm816x and am33xx. Let's add a function to get the 3517 MAC address. Signed-off-by: Tony Lindgren Signed-off-by: David S. Miller --- diff --git a/arch/arm/boot/dts/am3517.dtsi b/arch/arm/boot/dts/am3517.dtsi index 5a452fdd7c5d..c90724bded10 100644 --- a/arch/arm/boot/dts/am3517.dtsi +++ b/arch/arm/boot/dts/am3517.dtsi @@ -31,6 +31,7 @@ status = "disabled"; reg = <0x5c000000 0x30000>; interrupts = <67 68 69 70>; + syscon = <&omap3_scm_general>; ti,davinci-ctrl-reg-offset = <0x10000>; ti,davinci-ctrl-mod-reg-offset = <0>; ti,davinci-ctrl-ram-offset = <0x20000>; diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c index a7169384ff6e..aeebc0a7bf47 100644 --- a/drivers/net/ethernet/ti/davinci_emac.c +++ b/drivers/net/ethernet/ti/davinci_emac.c @@ -52,6 +52,7 @@ #include #include #include +#include #include #include #include @@ -65,6 +66,7 @@ #include #include #include +#include #include #include @@ -1880,6 +1882,33 @@ davinci_emac_of_get_pdata(struct platform_device *pdev, struct emac_priv *priv) return pdata; } +static int davinci_emac_3517_get_macid(struct device *dev, u16 offset, + int slave, u8 *mac_addr) +{ + u32 macid_lsb; + u32 macid_msb; + struct regmap *syscon; + + syscon = syscon_regmap_lookup_by_phandle(dev->of_node, "syscon"); + if (IS_ERR(syscon)) { + if (PTR_ERR(syscon) == -ENODEV) + return 0; + return PTR_ERR(syscon); + } + + regmap_read(syscon, offset, &macid_lsb); + regmap_read(syscon, offset + 4, &macid_msb); + + mac_addr[0] = (macid_msb >> 16) & 0xff; + mac_addr[1] = (macid_msb >> 8) & 0xff; + mac_addr[2] = macid_msb & 0xff; + mac_addr[3] = (macid_lsb >> 16) & 0xff; + mac_addr[4] = (macid_lsb >> 8) & 0xff; + mac_addr[5] = macid_lsb & 0xff; + + return 0; +} + static int davinci_emac_try_get_mac(struct platform_device *pdev, int instance, u8 *mac_addr) { @@ -1888,7 +1917,11 @@ static int davinci_emac_try_get_mac(struct platform_device *pdev, if (!pdev->dev.of_node) return error; - if (of_device_is_compatible(pdev->dev.of_node, "ti,dm816-emac")) + if (of_device_is_compatible(pdev->dev.of_node, "ti,am3517-emac")) + error = davinci_emac_3517_get_macid(&pdev->dev, 0x110, + 0, mac_addr); + else if (of_device_is_compatible(pdev->dev.of_node, + "ti,dm816-emac")) error = cpsw_am33xx_cm_get_macid(&pdev->dev, 0x30, instance, mac_addr);