1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
4 * Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl>
5 */
6
7#ifndef __MT7601U_EEPROM_H
8#define __MT7601U_EEPROM_H
9
10struct mt7601u_dev;
11
12#define MT7601U_EE_MAX_VER 0x0d
13#define MT7601U_EEPROM_SIZE 256
14
15#define MT7601U_DEFAULT_TX_POWER 6
16
17enum mt76_eeprom_field {
18 MT_EE_CHIP_ID = 0x00,
19 MT_EE_VERSION_FAE = 0x02,
20 MT_EE_VERSION_EE = 0x03,
21 MT_EE_MAC_ADDR = 0x04,
22 MT_EE_NIC_CONF_0 = 0x34,
23 MT_EE_NIC_CONF_1 = 0x36,
24 MT_EE_COUNTRY_REGION = 0x39,
25 MT_EE_FREQ_OFFSET = 0x3a,
26 MT_EE_NIC_CONF_2 = 0x42,
27
28 MT_EE_LNA_GAIN = 0x44,
29 MT_EE_RSSI_OFFSET = 0x46,
30
31 MT_EE_TX_POWER_DELTA_BW40 = 0x50,
32 MT_EE_TX_POWER_OFFSET = 0x52,
33
34 MT_EE_TX_TSSI_SLOPE = 0x6e,
35 MT_EE_TX_TSSI_OFFSET_GROUP = 0x6f,
36 MT_EE_TX_TSSI_OFFSET = 0x76,
37
38 MT_EE_TX_TSSI_TARGET_POWER = 0xd0,
39 MT_EE_REF_TEMP = 0xd1,
40 MT_EE_FREQ_OFFSET_COMPENSATION = 0xdb,
41 MT_EE_TX_POWER_BYRATE_BASE = 0xde,
42
43 MT_EE_USAGE_MAP_START = 0x1e0,
44 MT_EE_USAGE_MAP_END = 0x1fc,
45};
46
47#define MT_EE_NIC_CONF_0_RX_PATH GENMASK(3, 0)
48#define MT_EE_NIC_CONF_0_TX_PATH GENMASK(7, 4)
49#define MT_EE_NIC_CONF_0_BOARD_TYPE GENMASK(13, 12)
50
51#define MT_EE_NIC_CONF_1_HW_RF_CTRL BIT(0)
52#define MT_EE_NIC_CONF_1_TEMP_TX_ALC BIT(1)
53#define MT_EE_NIC_CONF_1_LNA_EXT_2G BIT(2)
54#define MT_EE_NIC_CONF_1_LNA_EXT_5G BIT(3)
55#define MT_EE_NIC_CONF_1_TX_ALC_EN BIT(13)
56
57#define MT_EE_NIC_CONF_2_RX_STREAM GENMASK(3, 0)
58#define MT_EE_NIC_CONF_2_TX_STREAM GENMASK(7, 4)
59#define MT_EE_NIC_CONF_2_HW_ANTDIV BIT(8)
60#define MT_EE_NIC_CONF_2_XTAL_OPTION GENMASK(10, 9)
61#define MT_EE_NIC_CONF_2_TEMP_DISABLE BIT(11)
62#define MT_EE_NIC_CONF_2_COEX_METHOD GENMASK(15, 13)
63
64#define MT_EE_TX_POWER_BYRATE(i) (MT_EE_TX_POWER_BYRATE_BASE + \
65 (i) * 4)
66
67#define MT_EFUSE_USAGE_MAP_SIZE (MT_EE_USAGE_MAP_END - \
68 MT_EE_USAGE_MAP_START + 1)
69
70enum mt7601u_eeprom_access_modes {
71 MT_EE_READ = 0,
72 MT_EE_PHYSICAL_READ = 1,
73};
74
75struct power_per_rate {
76 u8 raw; /* validated s6 value */
77 s8 bw20; /* sign-extended int */
78 s8 bw40; /* sign-extended int */
79};
80
81/* Power per rate - one value per two rates */
82struct mt7601u_rate_power {
83 struct power_per_rate cck[2];
84 struct power_per_rate ofdm[4];
85 struct power_per_rate ht[4];
86};
87
88struct reg_channel_bounds {
89 u8 start;
90 u8 num;
91};
92
93struct mt7601u_eeprom_params {
94 bool tssi_enabled;
95 u8 rf_freq_off;
96 s8 rssi_offset[2];
97 s8 ref_temp;
98 s8 lna_gain;
99
100 u8 chan_pwr[14];
101 struct mt7601u_rate_power power_rate_table;
102 s8 real_cck_bw20[2];
103
104 /* TSSI stuff - only with internal TX ALC */
105 struct tssi_data {
106 int tx0_delta_offset;
107 u8 slope;
108 u8 offset[3];
109 } tssi_data;
110
111 struct reg_channel_bounds reg;
112};
113
114int mt7601u_eeprom_init(struct mt7601u_dev *dev);
115
116static inline u32 s6_validate(u32 reg)
117{
118 WARN_ON(reg & ~GENMASK(5, 0));
119 return reg & GENMASK(5, 0);
120}
121
122static inline int s6_to_int(u32 reg)
123{
124 int s6;
125
126 s6 = s6_validate(reg);
127 if (s6 & BIT(5))
128 s6 -= BIT(6);
129
130 return s6;
131}
132
133static inline u32 int_to_s6(int val)
134{
135 if (val < -0x20)
136 return 0x20;
137 if (val > 0x1f)
138 return 0x1f;
139
140 return val & 0x3f;
141}
142
143#endif
144

source code of linux/drivers/net/wireless/mediatek/mt7601u/eeprom.h