1 // SPDX-License-Identifier: ISC
2 /*
3  * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
4  * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
5  */
6 
7 #include "mt76x2.h"
8 #include "eeprom.h"
9 #include "../mt76x02_phy.h"
10 
11 static void
12 mt76x2_set_wlan_state(struct mt76x02_dev *dev, bool enable)
13 {
14 	u32 val = mt76_rr(dev, MT_WLAN_FUN_CTRL);
15 
16 	if (enable)
17 		val |= (MT_WLAN_FUN_CTRL_WLAN_EN |
18 			MT_WLAN_FUN_CTRL_WLAN_CLK_EN);
19 	else
20 		val &= ~(MT_WLAN_FUN_CTRL_WLAN_EN |
21 			 MT_WLAN_FUN_CTRL_WLAN_CLK_EN);
22 
23 	mt76_wr(dev, MT_WLAN_FUN_CTRL, val);
24 	udelay(20);
25 }
26 
27 void mt76x2_reset_wlan(struct mt76x02_dev *dev, bool enable)
28 {
29 	u32 val;
30 
31 	if (!enable)
32 		goto out;
33 
34 	val = mt76_rr(dev, MT_WLAN_FUN_CTRL);
35 
36 	val &= ~MT_WLAN_FUN_CTRL_FRC_WL_ANT_SEL;
37 
38 	if (val & MT_WLAN_FUN_CTRL_WLAN_EN) {
39 		val |= MT_WLAN_FUN_CTRL_WLAN_RESET_RF;
40 		mt76_wr(dev, MT_WLAN_FUN_CTRL, val);
41 		udelay(20);
42 
43 		val &= ~MT_WLAN_FUN_CTRL_WLAN_RESET_RF;
44 	}
45 
46 	mt76_wr(dev, MT_WLAN_FUN_CTRL, val);
47 	udelay(20);
48 
49 out:
50 	mt76x2_set_wlan_state(dev, enable);
51 }
52 EXPORT_SYMBOL_GPL(mt76x2_reset_wlan);
53 
54 void mt76_write_mac_initvals(struct mt76x02_dev *dev)
55 {
56 #define DEFAULT_PROT_CFG_CCK				\
57 	(FIELD_PREP(MT_PROT_CFG_RATE, 0x3) |		\
58 	 FIELD_PREP(MT_PROT_CFG_NAV, 1) |		\
59 	 FIELD_PREP(MT_PROT_CFG_TXOP_ALLOW, 0x3f) |	\
60 	 MT_PROT_CFG_RTS_THRESH)
61 
62 #define DEFAULT_PROT_CFG_OFDM				\
63 	(FIELD_PREP(MT_PROT_CFG_RATE, 0x2004) |		\
64 	 FIELD_PREP(MT_PROT_CFG_NAV, 1) |			\
65 	 FIELD_PREP(MT_PROT_CFG_TXOP_ALLOW, 0x3f) |	\
66 	 MT_PROT_CFG_RTS_THRESH)
67 
68 #define DEFAULT_PROT_CFG_20				\
69 	(FIELD_PREP(MT_PROT_CFG_RATE, 0x2004) |		\
70 	 FIELD_PREP(MT_PROT_CFG_CTRL, 1) |		\
71 	 FIELD_PREP(MT_PROT_CFG_NAV, 1) |			\
72 	 FIELD_PREP(MT_PROT_CFG_TXOP_ALLOW, 0x17))
73 
74 #define DEFAULT_PROT_CFG_40				\
75 	(FIELD_PREP(MT_PROT_CFG_RATE, 0x2084) |		\
76 	 FIELD_PREP(MT_PROT_CFG_CTRL, 1) |		\
77 	 FIELD_PREP(MT_PROT_CFG_NAV, 1) |			\
78 	 FIELD_PREP(MT_PROT_CFG_TXOP_ALLOW, 0x3f))
79 
80 	static const struct mt76_reg_pair vals[] = {
81 		/* Copied from MediaTek reference source */
82 		{ MT_PBF_SYS_CTRL,		0x00080c00 },
83 		{ MT_PBF_CFG,			0x1efebcff },
84 		{ MT_FCE_PSE_CTRL,		0x00000001 },
85 		{ MT_MAC_SYS_CTRL,		0x00000000 },
86 		{ MT_MAX_LEN_CFG,		0x003e3f00 },
87 		{ MT_AMPDU_MAX_LEN_20M1S,	0xaaa99887 },
88 		{ MT_AMPDU_MAX_LEN_20M2S,	0x000000aa },
89 		{ MT_XIFS_TIME_CFG,		0x33a40d0a },
90 		{ MT_BKOFF_SLOT_CFG,		0x00000209 },
91 		{ MT_TBTT_SYNC_CFG,		0x00422010 },
92 		{ MT_PWR_PIN_CFG,		0x00000000 },
93 		{ 0x1238,			0x001700c8 },
94 		{ MT_TX_SW_CFG0,		0x00101001 },
95 		{ MT_TX_SW_CFG1,		0x00010000 },
96 		{ MT_TX_SW_CFG2,		0x00000000 },
97 		{ MT_TXOP_CTRL_CFG,		0x0400583f },
98 		{ MT_TX_RTS_CFG,		0x00ffff20 },
99 		{ MT_TX_TIMEOUT_CFG,		0x000a2290 },
100 		{ MT_TX_RETRY_CFG,		0x47f01f0f },
101 		{ MT_EXP_ACK_TIME,		0x002c00dc },
102 		{ MT_TX_PROT_CFG6,		0xe3f42004 },
103 		{ MT_TX_PROT_CFG7,		0xe3f42084 },
104 		{ MT_TX_PROT_CFG8,		0xe3f42104 },
105 		{ MT_PIFS_TX_CFG,		0x00060fff },
106 		{ MT_RX_FILTR_CFG,		0x00015f97 },
107 		{ MT_LEGACY_BASIC_RATE,		0x0000017f },
108 		{ MT_HT_BASIC_RATE,		0x00004003 },
109 		{ MT_PN_PAD_MODE,		0x00000003 },
110 		{ MT_TXOP_HLDR_ET,		0x00000002 },
111 		{ 0xa44,			0x00000000 },
112 		{ MT_HEADER_TRANS_CTRL_REG,	0x00000000 },
113 		{ MT_TSO_CTRL,			0x00000000 },
114 		{ MT_AUX_CLK_CFG,		0x00000000 },
115 		{ MT_DACCLK_EN_DLY_CFG,		0x00000000 },
116 		{ MT_TX_ALC_CFG_4,		0x00000000 },
117 		{ MT_TX_ALC_VGA3,		0x00000000 },
118 		{ MT_TX_PWR_CFG_0,		0x3a3a3a3a },
119 		{ MT_TX_PWR_CFG_1,		0x3a3a3a3a },
120 		{ MT_TX_PWR_CFG_2,		0x3a3a3a3a },
121 		{ MT_TX_PWR_CFG_3,		0x3a3a3a3a },
122 		{ MT_TX_PWR_CFG_4,		0x3a3a3a3a },
123 		{ MT_TX_PWR_CFG_7,		0x3a3a3a3a },
124 		{ MT_TX_PWR_CFG_8,		0x0000003a },
125 		{ MT_TX_PWR_CFG_9,		0x0000003a },
126 		{ MT_EFUSE_CTRL,		0x0000d000 },
127 		{ MT_PAUSE_ENABLE_CONTROL1,	0x0000000a },
128 		{ MT_FCE_WLAN_FLOW_CONTROL1,	0x60401c18 },
129 		{ MT_WPDMA_DELAY_INT_CFG,	0x94ff0000 },
130 		{ MT_TX_SW_CFG3,		0x00000004 },
131 		{ MT_HT_FBK_TO_LEGACY,		0x00001818 },
132 		{ MT_VHT_HT_FBK_CFG1,		0xedcba980 },
133 		{ MT_PROT_AUTO_TX_CFG,		0x00830083 },
134 		{ MT_HT_CTRL_CFG,		0x000001ff },
135 		{ MT_TX_LINK_CFG,		0x00001020 },
136 	};
137 	struct mt76_reg_pair prot_vals[] = {
138 		{ MT_CCK_PROT_CFG,		DEFAULT_PROT_CFG_CCK },
139 		{ MT_OFDM_PROT_CFG,		DEFAULT_PROT_CFG_OFDM },
140 		{ MT_MM20_PROT_CFG,		DEFAULT_PROT_CFG_20 },
141 		{ MT_MM40_PROT_CFG,		DEFAULT_PROT_CFG_40 },
142 		{ MT_GF20_PROT_CFG,		DEFAULT_PROT_CFG_20 },
143 		{ MT_GF40_PROT_CFG,		DEFAULT_PROT_CFG_40 },
144 	};
145 
146 	mt76_wr_rp(dev, 0, vals, ARRAY_SIZE(vals));
147 	mt76_wr_rp(dev, 0, prot_vals, ARRAY_SIZE(prot_vals));
148 }
149 EXPORT_SYMBOL_GPL(mt76_write_mac_initvals);
150 
151 void mt76x2_init_txpower(struct mt76x02_dev *dev,
152 			 struct ieee80211_supported_band *sband)
153 {
154 	struct ieee80211_channel *chan;
155 	struct mt76x2_tx_power_info txp;
156 	struct mt76_rate_power t = {};
157 	int i;
158 
159 	for (i = 0; i < sband->n_channels; i++) {
160 		chan = &sband->channels[i];
161 
162 		mt76x2_get_power_info(dev, &txp, chan);
163 		mt76x2_get_rate_power(dev, &t, chan);
164 
165 		chan->orig_mpwr = mt76x02_get_max_rate_power(&t) +
166 				  txp.target_power;
167 		chan->orig_mpwr = DIV_ROUND_UP(chan->orig_mpwr, 2);
168 
169 		/* convert to combined output power on 2x2 devices */
170 		chan->orig_mpwr += 3;
171 		chan->max_power = min_t(int, chan->max_reg_power,
172 					chan->orig_mpwr);
173 	}
174 }
175 EXPORT_SYMBOL_GPL(mt76x2_init_txpower);
176