1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
// SPDX-License-Identifier: ISC
#include <linux/of.h>
#include "mt7603.h"
#include "eeprom.h"
static int
mt7603_efuse_read(struct mt7603_dev *dev, u32 base, u16 addr, u8 *data)
{
u32 val;
int i;
val = mt76_rr(dev, base + MT_EFUSE_CTRL);
val &= ~(MT_EFUSE_CTRL_AIN |
MT_EFUSE_CTRL_MODE);
val |= FIELD_PREP(MT_EFUSE_CTRL_AIN, addr & ~0xf);
val |= MT_EFUSE_CTRL_KICK;
mt76_wr(dev, base + MT_EFUSE_CTRL, val);
if (!mt76_poll(dev, base + MT_EFUSE_CTRL, MT_EFUSE_CTRL_KICK, 0, 1000))
return -ETIMEDOUT;
udelay(2);
val = mt76_rr(dev, base + MT_EFUSE_CTRL);
if ((val & MT_EFUSE_CTRL_AOUT) == MT_EFUSE_CTRL_AOUT ||
WARN_ON_ONCE(!(val & MT_EFUSE_CTRL_VALID))) {
memset(data, 0xff, 16);
return 0;
}
for (i = 0; i < 4; i++) {
val = mt76_rr(dev, base + MT_EFUSE_RDATA(i));
put_unaligned_le32(val, data + 4 * i);
}
return 0;
}
static int
mt7603_efuse_init(struct mt7603_dev *dev)
{
u32 base = mt7603_reg_map(dev, MT_EFUSE_BASE);
int len = MT7603_EEPROM_SIZE;
void *buf;
int ret, i;
if (mt76_rr(dev, base + MT_EFUSE_BASE_CTRL) & MT_EFUSE_BASE_CTRL_EMPTY)
return 0;
dev->mt76.otp.data = devm_kzalloc(dev->mt76.dev, len, GFP_KERNEL);
dev->mt76.otp.size = len;
if (!dev->mt76.otp.data)
return -ENOMEM;
buf = dev->mt76.otp.data;
for (i = 0; i + 16 <= len; i += 16) {
ret = mt7603_efuse_read(dev, base, i, buf + i);
if (ret)
return ret;
}
return 0;
}
static bool
mt7603_has_cal_free_data(struct mt7603_dev *dev, u8 *efuse)
{
if (!efuse[MT_EE_TEMP_SENSOR_CAL])
return false;
if (get_unaligned_le16(efuse + MT_EE_TX_POWER_0_START_2G) == 0)
return false;
if (get_unaligned_le16(efuse + MT_EE_TX_POWER_1_START_2G) == 0)
return false;
if (!efuse[MT_EE_CP_FT_VERSION])
return false;
if (!efuse[MT_EE_XTAL_FREQ_OFFSET])
return false;
if (!efuse[MT_EE_XTAL_WF_RFCAL])
return false;
return true;
}
static void
mt7603_apply_cal_free_data(struct mt7603_dev *dev, u8 *efuse)
{
static const u8 cal_free_bytes[] = {
MT_EE_TEMP_SENSOR_CAL,
MT_EE_CP_FT_VERSION,
MT_EE_XTAL_FREQ_OFFSET,
MT_EE_XTAL_WF_RFCAL,
/* Skip for MT7628 */
MT_EE_TX_POWER_0_START_2G,
MT_EE_TX_POWER_0_START_2G + 1,
MT_EE_TX_POWER_1_START_2G,
MT_EE_TX_POWER_1_START_2G + 1,
};
struct device_node *np = dev->mt76.dev->of_node;
u8 *eeprom = dev->mt76.eeprom.data;
int n = ARRAY_SIZE(cal_free_bytes);
int i;
if (!np || !of_property_read_bool(np, "mediatek,eeprom-merge-otp"))
return;
if (!mt7603_has_cal_free_data(dev, efuse))
return;
if (is_mt7628(dev))
n -= 4;
for (i = 0; i < n; i++) {
int offset = cal_free_bytes[i];
eeprom[offset] = efuse[offset];
}
}
static int
mt7603_eeprom_load(struct mt7603_dev *dev)
{
int ret;
ret = mt76_eeprom_init(&dev->mt76, MT7603_EEPROM_SIZE);
if (ret < 0)
return ret;
return mt7603_efuse_init(dev);
}
static int mt7603_check_eeprom(struct mt76_dev *dev)
{
u16 val = get_unaligned_le16(dev->eeprom.data);
switch (val) {
case 0x7628:
case 0x7603:
return 0;
default:
return -EINVAL;
}
}
int mt7603_eeprom_init(struct mt7603_dev *dev)
{
int ret;
ret = mt7603_eeprom_load(dev);
if (ret < 0)
return ret;
if (dev->mt76.otp.data) {
if (mt7603_check_eeprom(&dev->mt76) == 0)
mt7603_apply_cal_free_data(dev, dev->mt76.otp.data);
else
memcpy(dev->mt76.eeprom.data, dev->mt76.otp.data,
MT7603_EEPROM_SIZE);
}
dev->mt76.cap.has_2ghz = true;
memcpy(dev->mt76.macaddr, dev->mt76.eeprom.data + MT_EE_MAC_ADDR,
ETH_ALEN);
mt76_eeprom_override(&dev->mt76);
return 0;
}
|
