summaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/mediatek/mt76/mt7996/eeprom.c
blob: 4a8237118287354f535e04cc633486bf1f06f5ef (plain)
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
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
// SPDX-License-Identifier: ISC
/*
 * Copyright (C) 2022 MediaTek Inc.
 */

#include <linux/firmware.h>
#include "mt7996.h"
#include "eeprom.h"

static int mt7996_check_eeprom(struct mt7996_dev *dev)
{
	u8 *eeprom = dev->mt76.eeprom.data;
	u16 val = get_unaligned_le16(eeprom);

	switch (val) {
	case 0x7990:
		return is_mt7996(&dev->mt76) ? 0 : -EINVAL;
	case 0x7992:
		return is_mt7992(&dev->mt76) ? 0 : -EINVAL;
	default:
		return -EINVAL;
	}
}

static char *mt7996_eeprom_name(struct mt7996_dev *dev)
{
	switch (mt76_chip(&dev->mt76)) {
	case 0x7990:
		return MT7996_EEPROM_DEFAULT;
	case 0x7992:
		return MT7992_EEPROM_DEFAULT;
	default:
		return MT7996_EEPROM_DEFAULT;
	}
}

static int
mt7996_eeprom_load_default(struct mt7996_dev *dev)
{
	u8 *eeprom = dev->mt76.eeprom.data;
	const struct firmware *fw = NULL;
	int ret;

	ret = request_firmware(&fw, mt7996_eeprom_name(dev), dev->mt76.dev);
	if (ret)
		return ret;

	if (!fw || !fw->data) {
		dev_err(dev->mt76.dev, "Invalid default bin\n");
		ret = -EINVAL;
		goto out;
	}

	memcpy(eeprom, fw->data, MT7996_EEPROM_SIZE);
	dev->flash_mode = true;

out:
	release_firmware(fw);

	return ret;
}

static int mt7996_eeprom_load(struct mt7996_dev *dev)
{
	int ret;

	ret = mt76_eeprom_init(&dev->mt76, MT7996_EEPROM_SIZE);
	if (ret < 0)
		return ret;

	if (ret) {
		dev->flash_mode = true;
	} else {
		u8 free_block_num;
		u32 block_num, i;
		u32 eeprom_blk_size = MT7996_EEPROM_BLOCK_SIZE;

		ret = mt7996_mcu_get_eeprom_free_block(dev, &free_block_num);
		if (ret < 0)
			return ret;

		/* efuse info isn't enough */
		if (free_block_num >= 59)
			return -EINVAL;

		/* read eeprom data from efuse */
		block_num = DIV_ROUND_UP(MT7996_EEPROM_SIZE, eeprom_blk_size);
		for (i = 0; i < block_num; i++) {
			ret = mt7996_mcu_get_eeprom(dev, i * eeprom_blk_size);
			if (ret < 0)
				return ret;
		}
	}

	return mt7996_check_eeprom(dev);
}

static int mt7996_eeprom_parse_efuse_hw_cap(struct mt7996_dev *dev)
{
#define MODE_HE_ONLY		BIT(0)
#define WTBL_SIZE_GROUP		GENMASK(31, 28)
	u32 cap = 0;
	int ret;

	ret = mt7996_mcu_get_chip_config(dev, &cap);
	if (ret)
		return ret;

	if (cap) {
		dev->has_eht = !(cap & MODE_HE_ONLY);
		dev->wtbl_size_group = u32_get_bits(cap, WTBL_SIZE_GROUP);
	}

	if (dev->wtbl_size_group < 2 || dev->wtbl_size_group > 4 ||
	    is_mt7992(&dev->mt76))
		dev->wtbl_size_group = 2; /* set default */

	return 0;
}

static int mt7996_eeprom_parse_band_config(struct mt7996_phy *phy)
{
	u8 *eeprom = phy->dev->mt76.eeprom.data;
	u32 val = eeprom[MT_EE_WIFI_CONF];
	int ret = 0;

	switch (phy->mt76->band_idx) {
	case MT_BAND1:
		val = FIELD_GET(MT_EE_WIFI_CONF1_BAND_SEL, val);
		break;
	case MT_BAND2:
		val = eeprom[MT_EE_WIFI_CONF + 1];
		val = FIELD_GET(MT_EE_WIFI_CONF2_BAND_SEL, val);
		break;
	default:
		val = FIELD_GET(MT_EE_WIFI_CONF0_BAND_SEL, val);
		break;
	}

	switch (val) {
	case MT_EE_BAND_SEL_2GHZ:
		phy->mt76->cap.has_2ghz = true;
		break;
	case MT_EE_BAND_SEL_5GHZ:
		phy->mt76->cap.has_5ghz = true;
		break;
	case MT_EE_BAND_SEL_6GHZ:
		phy->mt76->cap.has_6ghz = true;
		break;
	default:
		ret = -EINVAL;
		break;
	}

	return ret;
}

int mt7996_eeprom_parse_hw_cap(struct mt7996_dev *dev, struct mt7996_phy *phy)
{
	u8 path, rx_path, nss, band_idx = phy->mt76->band_idx;
	u8 *eeprom = dev->mt76.eeprom.data;
	struct mt76_phy *mphy = phy->mt76;
	int max_path = 5, max_nss = 4;
	int ret;

	switch (band_idx) {
	case MT_BAND1:
		path = FIELD_GET(MT_EE_WIFI_CONF2_TX_PATH_BAND1,
				 eeprom[MT_EE_WIFI_CONF + 2]);
		rx_path = FIELD_GET(MT_EE_WIFI_CONF3_RX_PATH_BAND1,
				    eeprom[MT_EE_WIFI_CONF + 3]);
		nss = FIELD_GET(MT_EE_WIFI_CONF5_STREAM_NUM_BAND1,
				eeprom[MT_EE_WIFI_CONF + 5]);
		break;
	case MT_BAND2:
		path = FIELD_GET(MT_EE_WIFI_CONF2_TX_PATH_BAND2,
				 eeprom[MT_EE_WIFI_CONF + 2]);
		rx_path = FIELD_GET(MT_EE_WIFI_CONF4_RX_PATH_BAND2,
				    eeprom[MT_EE_WIFI_CONF + 4]);
		nss = FIELD_GET(MT_EE_WIFI_CONF5_STREAM_NUM_BAND2,
				eeprom[MT_EE_WIFI_CONF + 5]);
		break;
	default:
		path = FIELD_GET(MT_EE_WIFI_CONF1_TX_PATH_BAND0,
				 eeprom[MT_EE_WIFI_CONF + 1]);
		rx_path = FIELD_GET(MT_EE_WIFI_CONF3_RX_PATH_BAND0,
				    eeprom[MT_EE_WIFI_CONF + 3]);
		nss = FIELD_GET(MT_EE_WIFI_CONF4_STREAM_NUM_BAND0,
				eeprom[MT_EE_WIFI_CONF + 4]);
		break;
	}

	if (!path || path > max_path)
		path = max_path;

	if (!nss || nss > max_nss)
		nss = max_nss;

	nss = min_t(u8, nss, path);

	if (path != rx_path)
		phy->has_aux_rx = true;

	mphy->antenna_mask = BIT(nss) - 1;
	mphy->chainmask = (BIT(path) - 1) << dev->chainshift[band_idx];
	dev->chainmask |= mphy->chainmask;
	if (band_idx < MT_BAND2)
		dev->chainshift[band_idx + 1] = dev->chainshift[band_idx] +
						hweight16(mphy->chainmask);

	ret = mt7996_eeprom_parse_efuse_hw_cap(dev);
	if (ret)
		return ret;

	return mt7996_eeprom_parse_band_config(phy);
}

int mt7996_eeprom_init(struct mt7996_dev *dev)
{
	int ret;

	ret = mt7996_eeprom_load(dev);
	if (ret < 0) {
		if (ret != -EINVAL)
			return ret;

		dev_warn(dev->mt76.dev, "eeprom load fail, use default bin\n");
		ret = mt7996_eeprom_load_default(dev);
		if (ret)
			return ret;
	}

	ret = mt7996_eeprom_parse_hw_cap(dev, &dev->phy);
	if (ret < 0)
		return ret;

	memcpy(dev->mphy.macaddr, dev->mt76.eeprom.data + MT_EE_MAC_ADDR, ETH_ALEN);
	mt76_eeprom_override(&dev->mphy);

	return 0;
}

int mt7996_eeprom_get_target_power(struct mt7996_dev *dev,
				   struct ieee80211_channel *chan)
{
	u8 *eeprom = dev->mt76.eeprom.data;
	int target_power;

	if (chan->band == NL80211_BAND_5GHZ)
		target_power = eeprom[MT_EE_TX0_POWER_5G +
				      mt7996_get_channel_group_5g(chan->hw_value)];
	else if (chan->band == NL80211_BAND_6GHZ)
		target_power = eeprom[MT_EE_TX0_POWER_6G +
				      mt7996_get_channel_group_6g(chan->hw_value)];
	else
		target_power = eeprom[MT_EE_TX0_POWER_2G];

	return target_power;
}

s8 mt7996_eeprom_get_power_delta(struct mt7996_dev *dev, int band)
{
	u8 *eeprom = dev->mt76.eeprom.data;
	u32 val;
	s8 delta;

	if (band == NL80211_BAND_5GHZ)
		val = eeprom[MT_EE_RATE_DELTA_5G];
	else if (band == NL80211_BAND_6GHZ)
		val = eeprom[MT_EE_RATE_DELTA_6G];
	else
		val = eeprom[MT_EE_RATE_DELTA_2G];

	if (!(val & MT_EE_RATE_DELTA_EN))
		return 0;

	delta = FIELD_GET(MT_EE_RATE_DELTA_MASK, val);

	return val & MT_EE_RATE_DELTA_SIGN ? delta : -delta;
}