projects / mirror_ubuntu-jammy-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| e5a49c1e TL |
1 | /* |
| 2 | * This program is free software; you can redistribute it and/or modify | |
| 3 | * it under the terms of the GNU General Public License as published by | |
| 4 | * the Free Software Foundation; either version 2 of the License, or | |
| 5 | * (at your option) any later version. | |
| 6 | * | |
| 7 | * This program is distributed in the hope that it will be useful, | |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 10 | * GNU General Public License for more details. | |
| 11 | */ | |
| 12 | ||
| 13 | #include <linux/kernel.h> | |
| 14 | #include <linux/module.h> | |
| 15 | #include <linux/of.h> | |
| 16 | #include <linux/of_device.h> | |
| 17 | #include <linux/regmap.h> | |
| 18 | #include <linux/mfd/syscon.h> | |
| 19 | ||
| f86b4ae6 LP |
20 | #include "cpsw.h" |
| 21 | ||
| e5a49c1e TL |
22 | #define AM33XX_CTRL_MAC_LO_REG(offset, id) ((offset) + 0x8 * (id)) |
| 23 | #define AM33XX_CTRL_MAC_HI_REG(offset, id) ((offset) + 0x8 * (id) + 0x4) | |
| 24 | ||
| 25 | int cpsw_am33xx_cm_get_macid(struct device *dev, u16 offset, int slave, | |
| 26 | u8 *mac_addr) | |
| 27 | { | |
| 28 | u32 macid_lo; | |
| 29 | u32 macid_hi; | |
| 30 | struct regmap *syscon; | |
| 31 | ||
| 32 | syscon = syscon_regmap_lookup_by_phandle(dev->of_node, "syscon"); | |
| 33 | if (IS_ERR(syscon)) { | |
| 34 | if (PTR_ERR(syscon) == -ENODEV) | |
| 35 | return 0; | |
| 36 | return PTR_ERR(syscon); | |
| 37 | } | |
| 38 | ||
| 39 | regmap_read(syscon, AM33XX_CTRL_MAC_LO_REG(offset, slave), | |
| 40 | &macid_lo); | |
| 41 | regmap_read(syscon, AM33XX_CTRL_MAC_HI_REG(offset, slave), | |
| 42 | &macid_hi); | |
| 43 | ||
| 44 | mac_addr[5] = (macid_lo >> 8) & 0xff; | |
| 45 | mac_addr[4] = macid_lo & 0xff; | |
| 46 | mac_addr[3] = (macid_hi >> 24) & 0xff; | |
| 47 | mac_addr[2] = (macid_hi >> 16) & 0xff; | |
| 48 | mac_addr[1] = (macid_hi >> 8) & 0xff; | |
| 49 | mac_addr[0] = macid_hi & 0xff; | |
| 50 | ||
| 51 | return 0; | |
| 52 | } | |
| 53 | EXPORT_SYMBOL_GPL(cpsw_am33xx_cm_get_macid); | |
| 54 | ||
| 55 | MODULE_LICENSE("GPL"); |