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 <tony@atomide.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -31,6 +31,7 @@
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status = "disabled";
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reg = <0x5c000000 0x30000>;
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interrupts = <67 68 69 70>;
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syscon = <&omap3_scm_general>;
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ti,davinci-ctrl-reg-offset = <0x10000>;
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ti,davinci-ctrl-mod-reg-offset = <0>;
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ti,davinci-ctrl-ram-offset = <0x20000>;
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@ -52,6 +52,7 @@
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#include <linux/dma-mapping.h>
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#include <linux/clk.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include <linux/semaphore.h>
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#include <linux/phy.h>
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#include <linux/bitops.h>
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@ -65,6 +66,7 @@
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#include <linux/of_mdio.h>
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#include <linux/of_irq.h>
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#include <linux/of_net.h>
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#include <linux/mfd/syscon.h>
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#include <asm/irq.h>
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#include <asm/page.h>
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@ -1880,6 +1882,33 @@ davinci_emac_of_get_pdata(struct platform_device *pdev, struct emac_priv *priv)
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return pdata;
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}
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static int davinci_emac_3517_get_macid(struct device *dev, u16 offset,
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int slave, u8 *mac_addr)
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{
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u32 macid_lsb;
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u32 macid_msb;
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struct regmap *syscon;
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syscon = syscon_regmap_lookup_by_phandle(dev->of_node, "syscon");
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if (IS_ERR(syscon)) {
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if (PTR_ERR(syscon) == -ENODEV)
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return 0;
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return PTR_ERR(syscon);
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}
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regmap_read(syscon, offset, &macid_lsb);
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regmap_read(syscon, offset + 4, &macid_msb);
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mac_addr[0] = (macid_msb >> 16) & 0xff;
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mac_addr[1] = (macid_msb >> 8) & 0xff;
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mac_addr[2] = macid_msb & 0xff;
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mac_addr[3] = (macid_lsb >> 16) & 0xff;
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mac_addr[4] = (macid_lsb >> 8) & 0xff;
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mac_addr[5] = macid_lsb & 0xff;
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return 0;
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}
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static int davinci_emac_try_get_mac(struct platform_device *pdev,
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int instance, u8 *mac_addr)
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{
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@ -1888,7 +1917,11 @@ static int davinci_emac_try_get_mac(struct platform_device *pdev,
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if (!pdev->dev.of_node)
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return error;
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if (of_device_is_compatible(pdev->dev.of_node, "ti,dm816-emac"))
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if (of_device_is_compatible(pdev->dev.of_node, "ti,am3517-emac"))
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error = davinci_emac_3517_get_macid(&pdev->dev, 0x110,
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0, mac_addr);
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else if (of_device_is_compatible(pdev->dev.of_node,
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"ti,dm816-emac"))
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error = cpsw_am33xx_cm_get_macid(&pdev->dev, 0x30,
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instance,
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mac_addr);
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