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1// SPDX-License-Identifier: ISC2/* Copyright (C) 2020 MediaTek Inc. */3 4#include <linux/firmware.h>5#include "mt7915.h"6#include "eeprom.h"7 8static int mt7915_eeprom_load_precal(struct mt7915_dev *dev)9{10 struct mt76_dev *mdev = &dev->mt76;11 u8 *eeprom = mdev->eeprom.data;12 u32 offs = is_mt7915(&dev->mt76) ? MT_EE_DO_PRE_CAL : MT_EE_DO_PRE_CAL_V2;13 u32 size, val = eeprom[offs];14 int ret;15 16 if (!dev->flash_mode || !val)17 return 0;18 19 size = mt7915_get_cal_group_size(dev) + mt7915_get_cal_dpd_size(dev);20 21 dev->cal = devm_kzalloc(mdev->dev, size, GFP_KERNEL);22 if (!dev->cal)23 return -ENOMEM;24 25 offs = is_mt7915(&dev->mt76) ? MT_EE_PRECAL : MT_EE_PRECAL_V2;26 27 ret = mt76_get_of_data_from_mtd(mdev, dev->cal, offs, size);28 if (!ret)29 return ret;30 31 ret = mt76_get_of_data_from_nvmem(mdev, dev->cal, "precal", size);32 if (!ret)33 return ret;34 35 dev_warn(mdev->dev, "missing precal data, size=%d\n", size);36 devm_kfree(mdev->dev, dev->cal);37 dev->cal = NULL;38 39 return ret;40}41 42static int mt7915_check_eeprom(struct mt7915_dev *dev)43{44 u8 *eeprom = dev->mt76.eeprom.data;45 u16 val = get_unaligned_le16(eeprom);46 47#define CHECK_EEPROM_ERR(match) (match ? 0 : -EINVAL)48 switch (val) {49 case 0x7915:50 return CHECK_EEPROM_ERR(is_mt7915(&dev->mt76));51 case 0x7916:52 return CHECK_EEPROM_ERR(is_mt7916(&dev->mt76));53 case 0x7981:54 return CHECK_EEPROM_ERR(is_mt7981(&dev->mt76));55 case 0x7986:56 return CHECK_EEPROM_ERR(is_mt7986(&dev->mt76));57 default:58 return -EINVAL;59 }60}61 62static char *mt7915_eeprom_name(struct mt7915_dev *dev)63{64 switch (mt76_chip(&dev->mt76)) {65 case 0x7915:66 return dev->dbdc_support ?67 MT7915_EEPROM_DEFAULT_DBDC : MT7915_EEPROM_DEFAULT;68 case 0x7981:69 /* mt7981 only supports mt7976 and only in DBDC mode */70 return MT7981_EEPROM_MT7976_DEFAULT_DBDC;71 case 0x7986:72 switch (mt7915_check_adie(dev, true)) {73 case MT7976_ONE_ADIE_DBDC:74 return MT7986_EEPROM_MT7976_DEFAULT_DBDC;75 case MT7975_ONE_ADIE:76 return MT7986_EEPROM_MT7975_DEFAULT;77 case MT7976_ONE_ADIE:78 return MT7986_EEPROM_MT7976_DEFAULT;79 case MT7975_DUAL_ADIE:80 return MT7986_EEPROM_MT7975_DUAL_DEFAULT;81 case MT7976_DUAL_ADIE:82 return MT7986_EEPROM_MT7976_DUAL_DEFAULT;83 default:84 break;85 }86 return NULL;87 default:88 return MT7916_EEPROM_DEFAULT;89 }90}91 92static int93mt7915_eeprom_load_default(struct mt7915_dev *dev)94{95 u8 *eeprom = dev->mt76.eeprom.data;96 const struct firmware *fw = NULL;97 int ret;98 99 ret = request_firmware(&fw, mt7915_eeprom_name(dev), dev->mt76.dev);100 if (ret)101 return ret;102 103 if (!fw || !fw->data) {104 dev_err(dev->mt76.dev, "Invalid default bin\n");105 ret = -EINVAL;106 goto out;107 }108 109 memcpy(eeprom, fw->data, mt7915_eeprom_size(dev));110 dev->flash_mode = true;111 112out:113 release_firmware(fw);114 115 return ret;116}117 118static int mt7915_eeprom_load(struct mt7915_dev *dev)119{120 int ret;121 u16 eeprom_size = mt7915_eeprom_size(dev);122 123 ret = mt76_eeprom_init(&dev->mt76, eeprom_size);124 if (ret < 0)125 return ret;126 127 if (ret) {128 dev->flash_mode = true;129 } else {130 u8 free_block_num;131 u32 block_num, i;132 u32 eeprom_blk_size = MT7915_EEPROM_BLOCK_SIZE;133 134 ret = mt7915_mcu_get_eeprom_free_block(dev, &free_block_num);135 if (ret < 0)136 return ret;137 138 /* efuse info isn't enough */139 if (free_block_num >= 29)140 return -EINVAL;141 142 /* read eeprom data from efuse */143 block_num = DIV_ROUND_UP(eeprom_size, eeprom_blk_size);144 for (i = 0; i < block_num; i++) {145 ret = mt7915_mcu_get_eeprom(dev, i * eeprom_blk_size);146 if (ret < 0)147 return ret;148 }149 }150 151 return mt7915_check_eeprom(dev);152}153 154static void mt7915_eeprom_parse_band_config(struct mt7915_phy *phy)155{156 struct mt7915_dev *dev = phy->dev;157 u8 *eeprom = dev->mt76.eeprom.data;158 u8 band = phy->mt76->band_idx;159 u32 val;160 161 val = eeprom[MT_EE_WIFI_CONF + band];162 val = FIELD_GET(MT_EE_WIFI_CONF0_BAND_SEL, val);163 164 if (!is_mt7915(&dev->mt76)) {165 switch (val) {166 case MT_EE_V2_BAND_SEL_5GHZ:167 phy->mt76->cap.has_5ghz = true;168 return;169 case MT_EE_V2_BAND_SEL_6GHZ:170 phy->mt76->cap.has_6ghz = true;171 return;172 case MT_EE_V2_BAND_SEL_5GHZ_6GHZ:173 phy->mt76->cap.has_5ghz = true;174 phy->mt76->cap.has_6ghz = true;175 return;176 default:177 phy->mt76->cap.has_2ghz = true;178 return;179 }180 } else if (val == MT_EE_BAND_SEL_DEFAULT && dev->dbdc_support) {181 val = band ? MT_EE_BAND_SEL_5GHZ : MT_EE_BAND_SEL_2GHZ;182 }183 184 switch (val) {185 case MT_EE_BAND_SEL_5GHZ:186 phy->mt76->cap.has_5ghz = true;187 break;188 case MT_EE_BAND_SEL_2GHZ:189 phy->mt76->cap.has_2ghz = true;190 break;191 default:192 phy->mt76->cap.has_2ghz = true;193 phy->mt76->cap.has_5ghz = true;194 break;195 }196}197 198void mt7915_eeprom_parse_hw_cap(struct mt7915_dev *dev,199 struct mt7915_phy *phy)200{201 u8 path, nss, nss_max = 4, *eeprom = dev->mt76.eeprom.data;202 struct mt76_phy *mphy = phy->mt76;203 u8 band = phy->mt76->band_idx;204 205 mt7915_eeprom_parse_band_config(phy);206 207 /* read tx/rx path from eeprom */208 if (is_mt7915(&dev->mt76)) {209 path = FIELD_GET(MT_EE_WIFI_CONF0_TX_PATH,210 eeprom[MT_EE_WIFI_CONF]);211 } else {212 path = FIELD_GET(MT_EE_WIFI_CONF0_TX_PATH,213 eeprom[MT_EE_WIFI_CONF + band]);214 }215 216 if (!path || path > 4)217 path = 4;218 219 /* read tx/rx stream */220 nss = path;221 if (dev->dbdc_support) {222 if (is_mt7915(&dev->mt76)) {223 path = min_t(u8, path, 2);224 nss = FIELD_GET(MT_EE_WIFI_CONF3_TX_PATH_B0,225 eeprom[MT_EE_WIFI_CONF + 3]);226 if (band)227 nss = FIELD_GET(MT_EE_WIFI_CONF3_TX_PATH_B1,228 eeprom[MT_EE_WIFI_CONF + 3]);229 } else {230 nss = FIELD_GET(MT_EE_WIFI_CONF_STREAM_NUM,231 eeprom[MT_EE_WIFI_CONF + 2 + band]);232 }233 234 if (!is_mt798x(&dev->mt76))235 nss_max = 2;236 }237 238 if (!nss)239 nss = nss_max;240 nss = min_t(u8, min_t(u8, nss_max, nss), path);241 242 mphy->chainmask = BIT(path) - 1;243 if (band)244 mphy->chainmask <<= dev->chainshift;245 mphy->antenna_mask = BIT(nss) - 1;246 dev->chainmask |= mphy->chainmask;247 dev->chainshift = hweight8(dev->mphy.chainmask);248}249 250int mt7915_eeprom_init(struct mt7915_dev *dev)251{252 int ret;253 254 ret = mt7915_eeprom_load(dev);255 if (ret < 0) {256 if (ret != -EINVAL)257 return ret;258 259 dev_warn(dev->mt76.dev, "eeprom load fail, use default bin\n");260 ret = mt7915_eeprom_load_default(dev);261 if (ret)262 return ret;263 }264 265 mt7915_eeprom_load_precal(dev);266 mt7915_eeprom_parse_hw_cap(dev, &dev->phy);267 memcpy(dev->mphy.macaddr, dev->mt76.eeprom.data + MT_EE_MAC_ADDR,268 ETH_ALEN);269 270 mt76_eeprom_override(&dev->mphy);271 272 return 0;273}274 275int mt7915_eeprom_get_target_power(struct mt7915_dev *dev,276 struct ieee80211_channel *chan,277 u8 chain_idx)278{279 u8 *eeprom = dev->mt76.eeprom.data;280 int index, target_power;281 bool tssi_on, is_7976;282 283 if (chain_idx > 3)284 return -EINVAL;285 286 tssi_on = mt7915_tssi_enabled(dev, chan->band);287 is_7976 = mt7915_check_adie(dev, false) || is_mt7916(&dev->mt76);288 289 if (chan->band == NL80211_BAND_2GHZ) {290 if (is_7976) {291 index = MT_EE_TX0_POWER_2G_V2 + chain_idx;292 target_power = eeprom[index];293 } else {294 index = MT_EE_TX0_POWER_2G + chain_idx * 3;295 target_power = eeprom[index];296 297 if (!tssi_on)298 target_power += eeprom[index + 1];299 }300 } else if (chan->band == NL80211_BAND_5GHZ) {301 int group = mt7915_get_channel_group_5g(chan->hw_value, is_7976);302 303 if (is_7976) {304 index = MT_EE_TX0_POWER_5G_V2 + chain_idx * 5;305 target_power = eeprom[index + group];306 } else {307 index = MT_EE_TX0_POWER_5G + chain_idx * 12;308 target_power = eeprom[index + group];309 310 if (!tssi_on)311 target_power += eeprom[index + 8];312 }313 } else {314 int group = mt7915_get_channel_group_6g(chan->hw_value);315 316 index = MT_EE_TX0_POWER_6G_V2 + chain_idx * 8;317 target_power = is_7976 ? eeprom[index + group] : 0;318 }319 320 return target_power;321}322 323s8 mt7915_eeprom_get_power_delta(struct mt7915_dev *dev, int band)324{325 u8 *eeprom = dev->mt76.eeprom.data;326 u32 val, offs;327 s8 delta;328 bool is_7976 = mt7915_check_adie(dev, false) || is_mt7916(&dev->mt76);329 330 if (band == NL80211_BAND_2GHZ)331 offs = is_7976 ? MT_EE_RATE_DELTA_2G_V2 : MT_EE_RATE_DELTA_2G;332 else if (band == NL80211_BAND_5GHZ)333 offs = is_7976 ? MT_EE_RATE_DELTA_5G_V2 : MT_EE_RATE_DELTA_5G;334 else335 offs = is_7976 ? MT_EE_RATE_DELTA_6G_V2 : 0;336 337 val = eeprom[offs];338 339 if (!offs || !(val & MT_EE_RATE_DELTA_EN))340 return 0;341 342 delta = FIELD_GET(MT_EE_RATE_DELTA_MASK, val);343 344 return val & MT_EE_RATE_DELTA_SIGN ? delta : -delta;345}346 347const u8 mt7915_sku_group_len[] = {348 [SKU_CCK] = 4,349 [SKU_OFDM] = 8,350 [SKU_HT_BW20] = 8,351 [SKU_HT_BW40] = 9,352 [SKU_VHT_BW20] = 12,353 [SKU_VHT_BW40] = 12,354 [SKU_VHT_BW80] = 12,355 [SKU_VHT_BW160] = 12,356 [SKU_HE_RU26] = 12,357 [SKU_HE_RU52] = 12,358 [SKU_HE_RU106] = 12,359 [SKU_HE_RU242] = 12,360 [SKU_HE_RU484] = 12,361 [SKU_HE_RU996] = 12,362 [SKU_HE_RU2x996] = 12363};364