1e5a49c1eSTony Lindgren /* 2e5a49c1eSTony Lindgren * This program is free software; you can redistribute it and/or modify 3e5a49c1eSTony Lindgren * it under the terms of the GNU General Public License as published by 4e5a49c1eSTony Lindgren * the Free Software Foundation; either version 2 of the License, or 5e5a49c1eSTony Lindgren * (at your option) any later version. 6e5a49c1eSTony Lindgren * 7e5a49c1eSTony Lindgren * This program is distributed in the hope that it will be useful, 8e5a49c1eSTony Lindgren * but WITHOUT ANY WARRANTY; without even the implied warranty of 9e5a49c1eSTony Lindgren * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 10e5a49c1eSTony Lindgren * GNU General Public License for more details. 11e5a49c1eSTony Lindgren */ 12e5a49c1eSTony Lindgren 13e5a49c1eSTony Lindgren #include <linux/kernel.h> 14e5a49c1eSTony Lindgren #include <linux/module.h> 15e5a49c1eSTony Lindgren #include <linux/of.h> 16e5a49c1eSTony Lindgren #include <linux/of_device.h> 17e5a49c1eSTony Lindgren #include <linux/regmap.h> 18e5a49c1eSTony Lindgren #include <linux/mfd/syscon.h> 19e5a49c1eSTony Lindgren 20f86b4ae6SLad, Prabhakar #include "cpsw.h" 21f86b4ae6SLad, Prabhakar 22b6745f6eSMugunthan V N #define CTRL_MAC_LO_REG(offset, id) ((offset) + 0x8 * (id)) 23b6745f6eSMugunthan V N #define CTRL_MAC_HI_REG(offset, id) ((offset) + 0x8 * (id) + 0x4) 24e5a49c1eSTony Lindgren 25b6745f6eSMugunthan V N static int davinci_emac_3517_get_macid(struct device *dev, u16 offset, 26b6745f6eSMugunthan V N int slave, u8 *mac_addr) 27b6745f6eSMugunthan V N { 28b6745f6eSMugunthan V N u32 macid_lsb; 29b6745f6eSMugunthan V N u32 macid_msb; 30b6745f6eSMugunthan V N struct regmap *syscon; 31b6745f6eSMugunthan V N 32b6745f6eSMugunthan V N syscon = syscon_regmap_lookup_by_phandle(dev->of_node, "syscon"); 33b6745f6eSMugunthan V N if (IS_ERR(syscon)) { 34b6745f6eSMugunthan V N if (PTR_ERR(syscon) == -ENODEV) 35b6745f6eSMugunthan V N return 0; 36b6745f6eSMugunthan V N return PTR_ERR(syscon); 37b6745f6eSMugunthan V N } 38b6745f6eSMugunthan V N 39b6745f6eSMugunthan V N regmap_read(syscon, CTRL_MAC_LO_REG(offset, slave), &macid_lsb); 40b6745f6eSMugunthan V N regmap_read(syscon, CTRL_MAC_HI_REG(offset, slave), &macid_msb); 41b6745f6eSMugunthan V N 42b6745f6eSMugunthan V N mac_addr[0] = (macid_msb >> 16) & 0xff; 43b6745f6eSMugunthan V N mac_addr[1] = (macid_msb >> 8) & 0xff; 44b6745f6eSMugunthan V N mac_addr[2] = macid_msb & 0xff; 45b6745f6eSMugunthan V N mac_addr[3] = (macid_lsb >> 16) & 0xff; 46b6745f6eSMugunthan V N mac_addr[4] = (macid_lsb >> 8) & 0xff; 47b6745f6eSMugunthan V N mac_addr[5] = macid_lsb & 0xff; 48b6745f6eSMugunthan V N 49b6745f6eSMugunthan V N return 0; 50b6745f6eSMugunthan V N } 51b6745f6eSMugunthan V N 52b6745f6eSMugunthan V N static int cpsw_am33xx_cm_get_macid(struct device *dev, u16 offset, int slave, 53e5a49c1eSTony Lindgren u8 *mac_addr) 54e5a49c1eSTony Lindgren { 55e5a49c1eSTony Lindgren u32 macid_lo; 56e5a49c1eSTony Lindgren u32 macid_hi; 57e5a49c1eSTony Lindgren struct regmap *syscon; 58e5a49c1eSTony Lindgren 59e5a49c1eSTony Lindgren syscon = syscon_regmap_lookup_by_phandle(dev->of_node, "syscon"); 60e5a49c1eSTony Lindgren if (IS_ERR(syscon)) { 61e5a49c1eSTony Lindgren if (PTR_ERR(syscon) == -ENODEV) 62e5a49c1eSTony Lindgren return 0; 63e5a49c1eSTony Lindgren return PTR_ERR(syscon); 64e5a49c1eSTony Lindgren } 65e5a49c1eSTony Lindgren 66b6745f6eSMugunthan V N regmap_read(syscon, CTRL_MAC_LO_REG(offset, slave), &macid_lo); 67b6745f6eSMugunthan V N regmap_read(syscon, CTRL_MAC_HI_REG(offset, slave), &macid_hi); 68e5a49c1eSTony Lindgren 69e5a49c1eSTony Lindgren mac_addr[5] = (macid_lo >> 8) & 0xff; 70e5a49c1eSTony Lindgren mac_addr[4] = macid_lo & 0xff; 71e5a49c1eSTony Lindgren mac_addr[3] = (macid_hi >> 24) & 0xff; 72e5a49c1eSTony Lindgren mac_addr[2] = (macid_hi >> 16) & 0xff; 73e5a49c1eSTony Lindgren mac_addr[1] = (macid_hi >> 8) & 0xff; 74e5a49c1eSTony Lindgren mac_addr[0] = macid_hi & 0xff; 75e5a49c1eSTony Lindgren 76e5a49c1eSTony Lindgren return 0; 77e5a49c1eSTony Lindgren } 78b6745f6eSMugunthan V N 79b6745f6eSMugunthan V N int ti_cm_get_macid(struct device *dev, int slave, u8 *mac_addr) 80b6745f6eSMugunthan V N { 81b6745f6eSMugunthan V N if (of_machine_is_compatible("ti,am33xx")) 82b6745f6eSMugunthan V N return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr); 83b6745f6eSMugunthan V N 84b6745f6eSMugunthan V N if (of_device_is_compatible(dev->of_node, "ti,am3517-emac")) 85b6745f6eSMugunthan V N return davinci_emac_3517_get_macid(dev, 0x110, slave, mac_addr); 86b6745f6eSMugunthan V N 87b6745f6eSMugunthan V N if (of_device_is_compatible(dev->of_node, "ti,dm816-emac")) 88b6745f6eSMugunthan V N return cpsw_am33xx_cm_get_macid(dev, 0x30, slave, mac_addr); 89b6745f6eSMugunthan V N 90b6745f6eSMugunthan V N dev_err(dev, "incompatible machine/device type for reading mac address\n"); 91b6745f6eSMugunthan V N return -ENOENT; 92b6745f6eSMugunthan V N } 93b6745f6eSMugunthan V N EXPORT_SYMBOL_GPL(ti_cm_get_macid); 94e5a49c1eSTony Lindgren 95e5a49c1eSTony Lindgren MODULE_LICENSE("GPL"); 96