// SPDX-License-Identifier: GPL-2.0+ #include <linux/kernel.h> #include <linux/module.h> #include <linux/of.h> #include <linux/of_device.h> #include <linux/regmap.h> #include <linux/mfd/syscon.h> #include "cpsw.h" #define CTRL_MAC_LO_REG(offset, id) ((offset) + 0x8 * (id)) #define CTRL_MAC_HI_REG(offset, id) ((offset) + 0x8 * (id) + 0x4) 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, CTRL_MAC_LO_REG(offset, slave), &macid_lsb); regmap_read(syscon, CTRL_MAC_HI_REG(offset, slave), &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 cpsw_am33xx_cm_get_macid(struct device *dev, u16 offset, int slave, u8 *mac_addr) { u32 macid_lo; u32 macid_hi; 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, CTRL_MAC_LO_REG(offset, slave), &macid_lo); regmap_read(syscon, CTRL_MAC_HI_REG(offset, slave), &macid_hi); mac_addr[5] = (macid_lo >> 8) & 0xff; mac_addr[4] = macid_lo & 0xff; mac_addr[3] = (macid_hi >> 24) & 0xff; mac_addr[2] = (macid_hi >> 16) & 0xff; mac_addr[1] = (macid_hi >> 8) & 0xff; mac_addr[0] = macid_hi & 0xff; return 0; } int ti_cm_get_macid(struct device *dev, int slave, u8 *mac_addr) { if (of_machine_is_compatible("ti,dm8148")) return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr); if (of_machine_is_compatible("ti,am33xx")) return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr); if (of_device_is_compatible(dev->of_node, "ti,am3517-emac")) return davinci_emac_3517_get_macid(dev, 0x110, slave, mac_addr); if (of_device_is_compatible(dev->of_node, "ti,dm816-emac")) return cpsw_am33xx_cm_get_macid(dev, 0x30, slave, mac_addr); if (of_machine_is_compatible("ti,am43")) return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr); if (of_machine_is_compatible("ti,dra7")) return davinci_emac_3517_get_macid(dev, 0x514, slave, mac_addr); dev_info(dev, "incompatible machine/device type for reading mac address\n"); return -ENOENT; } EXPORT_SYMBOL_GPL(ti_cm_get_macid); MODULE_LICENSE("GPL");