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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 | ||
b6745f6e M |
22 | #define CTRL_MAC_LO_REG(offset, id) ((offset) + 0x8 * (id)) |
23 | #define CTRL_MAC_HI_REG(offset, id) ((offset) + 0x8 * (id) + 0x4) | |
e5a49c1e | 24 | |
b6745f6e M |
25 | static int davinci_emac_3517_get_macid(struct device *dev, u16 offset, |
26 | int slave, u8 *mac_addr) | |
27 | { | |
28 | u32 macid_lsb; | |
29 | u32 macid_msb; | |
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, CTRL_MAC_LO_REG(offset, slave), &macid_lsb); | |
40 | regmap_read(syscon, CTRL_MAC_HI_REG(offset, slave), &macid_msb); | |
41 | ||
42 | mac_addr[0] = (macid_msb >> 16) & 0xff; | |
43 | mac_addr[1] = (macid_msb >> 8) & 0xff; | |
44 | mac_addr[2] = macid_msb & 0xff; | |
45 | mac_addr[3] = (macid_lsb >> 16) & 0xff; | |
46 | mac_addr[4] = (macid_lsb >> 8) & 0xff; | |
47 | mac_addr[5] = macid_lsb & 0xff; | |
48 | ||
49 | return 0; | |
50 | } | |
51 | ||
52 | static int cpsw_am33xx_cm_get_macid(struct device *dev, u16 offset, int slave, | |
53 | u8 *mac_addr) | |
e5a49c1e TL |
54 | { |
55 | u32 macid_lo; | |
56 | u32 macid_hi; | |
57 | struct regmap *syscon; | |
58 | ||
59 | syscon = syscon_regmap_lookup_by_phandle(dev->of_node, "syscon"); | |
60 | if (IS_ERR(syscon)) { | |
61 | if (PTR_ERR(syscon) == -ENODEV) | |
62 | return 0; | |
63 | return PTR_ERR(syscon); | |
64 | } | |
65 | ||
b6745f6e M |
66 | regmap_read(syscon, CTRL_MAC_LO_REG(offset, slave), &macid_lo); |
67 | regmap_read(syscon, CTRL_MAC_HI_REG(offset, slave), &macid_hi); | |
e5a49c1e TL |
68 | |
69 | mac_addr[5] = (macid_lo >> 8) & 0xff; | |
70 | mac_addr[4] = macid_lo & 0xff; | |
71 | mac_addr[3] = (macid_hi >> 24) & 0xff; | |
72 | mac_addr[2] = (macid_hi >> 16) & 0xff; | |
73 | mac_addr[1] = (macid_hi >> 8) & 0xff; | |
74 | mac_addr[0] = macid_hi & 0xff; | |
75 | ||
76 | return 0; | |
77 | } | |
b6745f6e M |
78 | |
79 | int ti_cm_get_macid(struct device *dev, int slave, u8 *mac_addr) | |
80 | { | |
0db19b85 TL |
81 | if (of_machine_is_compatible("ti,dm8148")) |
82 | return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr); | |
83 | ||
b6745f6e M |
84 | if (of_machine_is_compatible("ti,am33xx")) |
85 | return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr); | |
86 | ||
87 | if (of_device_is_compatible(dev->of_node, "ti,am3517-emac")) | |
88 | return davinci_emac_3517_get_macid(dev, 0x110, slave, mac_addr); | |
89 | ||
90 | if (of_device_is_compatible(dev->of_node, "ti,dm816-emac")) | |
91 | return cpsw_am33xx_cm_get_macid(dev, 0x30, slave, mac_addr); | |
92 | ||
d230a11a M |
93 | if (of_machine_is_compatible("ti,am4372")) |
94 | return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr); | |
95 | ||
96 | if (of_machine_is_compatible("ti,dra7")) | |
97 | return davinci_emac_3517_get_macid(dev, 0x514, slave, mac_addr); | |
98 | ||
b6745f6e M |
99 | dev_err(dev, "incompatible machine/device type for reading mac address\n"); |
100 | return -ENOENT; | |
101 | } | |
102 | EXPORT_SYMBOL_GPL(ti_cm_get_macid); | |
e5a49c1e TL |
103 | |
104 | MODULE_LICENSE("GPL"); |