developer | b11a539 | 2022-03-31 00:34:47 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: ISC |
| 2 | /* Copyright (C) 2019 MediaTek Inc. |
| 3 | * |
| 4 | * Author: Ryder Lee <ryder.lee@mediatek.com> |
| 5 | * Felix Fietkau <nbd@nbd.name> |
| 6 | */ |
| 7 | |
| 8 | #include <linux/of.h> |
| 9 | #include "mt7615.h" |
| 10 | #include "eeprom.h" |
| 11 | |
| 12 | static int mt7615_efuse_read(struct mt7615_dev *dev, u32 base, |
| 13 | u16 addr, u8 *data) |
| 14 | { |
| 15 | u32 val; |
| 16 | int i; |
| 17 | |
| 18 | val = mt76_rr(dev, base + MT_EFUSE_CTRL); |
| 19 | val &= ~(MT_EFUSE_CTRL_AIN | MT_EFUSE_CTRL_MODE); |
| 20 | val |= FIELD_PREP(MT_EFUSE_CTRL_AIN, addr & ~0xf); |
| 21 | val |= MT_EFUSE_CTRL_KICK; |
| 22 | mt76_wr(dev, base + MT_EFUSE_CTRL, val); |
| 23 | |
| 24 | if (!mt76_poll(dev, base + MT_EFUSE_CTRL, MT_EFUSE_CTRL_KICK, 0, 1000)) |
| 25 | return -ETIMEDOUT; |
| 26 | |
| 27 | udelay(2); |
| 28 | |
| 29 | val = mt76_rr(dev, base + MT_EFUSE_CTRL); |
| 30 | if ((val & MT_EFUSE_CTRL_AOUT) == MT_EFUSE_CTRL_AOUT || |
| 31 | WARN_ON_ONCE(!(val & MT_EFUSE_CTRL_VALID))) { |
| 32 | memset(data, 0x0, 16); |
| 33 | return 0; |
| 34 | } |
| 35 | |
| 36 | for (i = 0; i < 4; i++) { |
| 37 | val = mt76_rr(dev, base + MT_EFUSE_RDATA(i)); |
| 38 | put_unaligned_le32(val, data + 4 * i); |
| 39 | } |
| 40 | |
| 41 | return 0; |
| 42 | } |
| 43 | |
| 44 | static int mt7615_efuse_init(struct mt7615_dev *dev, u32 base) |
| 45 | { |
| 46 | int i, len = MT7615_EEPROM_SIZE; |
| 47 | void *buf; |
| 48 | u32 val; |
| 49 | |
| 50 | val = mt76_rr(dev, base + MT_EFUSE_BASE_CTRL); |
| 51 | if (val & MT_EFUSE_BASE_CTRL_EMPTY) |
| 52 | return 0; |
| 53 | |
| 54 | dev->mt76.otp.data = devm_kzalloc(dev->mt76.dev, len, GFP_KERNEL); |
| 55 | dev->mt76.otp.size = len; |
| 56 | if (!dev->mt76.otp.data) |
| 57 | return -ENOMEM; |
| 58 | |
| 59 | buf = dev->mt76.otp.data; |
| 60 | for (i = 0; i + 16 <= len; i += 16) { |
| 61 | int ret; |
| 62 | |
| 63 | ret = mt7615_efuse_read(dev, base, i, buf + i); |
| 64 | if (ret) |
| 65 | return ret; |
| 66 | } |
| 67 | |
| 68 | return 0; |
| 69 | } |
| 70 | |
| 71 | static int mt7615_eeprom_load(struct mt7615_dev *dev, u32 addr) |
| 72 | { |
| 73 | int ret; |
| 74 | |
| 75 | ret = mt76_eeprom_init(&dev->mt76, MT7615_EEPROM_FULL_SIZE); |
| 76 | if (ret < 0) |
| 77 | return ret; |
| 78 | |
| 79 | return mt7615_efuse_init(dev, addr); |
| 80 | } |
| 81 | |
| 82 | static int mt7615_check_eeprom(struct mt76_dev *dev) |
| 83 | { |
| 84 | u16 val = get_unaligned_le16(dev->eeprom.data); |
| 85 | |
| 86 | switch (val) { |
| 87 | case 0x7615: |
| 88 | case 0x7622: |
| 89 | case 0x7663: |
| 90 | return 0; |
| 91 | default: |
| 92 | return -EINVAL; |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | static void |
| 97 | mt7615_eeprom_parse_hw_band_cap(struct mt7615_dev *dev) |
| 98 | { |
| 99 | u8 val, *eeprom = dev->mt76.eeprom.data; |
| 100 | |
| 101 | if (is_mt7663(&dev->mt76)) { |
| 102 | /* dual band */ |
| 103 | dev->mphy.cap.has_2ghz = true; |
| 104 | dev->mphy.cap.has_5ghz = true; |
| 105 | return; |
| 106 | } |
| 107 | |
| 108 | if (is_mt7622(&dev->mt76)) { |
| 109 | /* 2GHz only */ |
| 110 | dev->mphy.cap.has_2ghz = true; |
| 111 | return; |
| 112 | } |
| 113 | |
| 114 | if (is_mt7611(&dev->mt76)) { |
| 115 | /* 5GHz only */ |
| 116 | dev->mphy.cap.has_5ghz = true; |
| 117 | return; |
| 118 | } |
| 119 | |
| 120 | val = FIELD_GET(MT_EE_NIC_WIFI_CONF_BAND_SEL, |
| 121 | eeprom[MT_EE_WIFI_CONF]); |
| 122 | switch (val) { |
| 123 | case MT_EE_5GHZ: |
| 124 | dev->mphy.cap.has_5ghz = true; |
| 125 | break; |
| 126 | case MT_EE_2GHZ: |
| 127 | dev->mphy.cap.has_2ghz = true; |
| 128 | break; |
| 129 | case MT_EE_DBDC: |
| 130 | dev->dbdc_support = true; |
| 131 | fallthrough; |
| 132 | default: |
| 133 | dev->mphy.cap.has_2ghz = true; |
| 134 | dev->mphy.cap.has_5ghz = true; |
| 135 | break; |
| 136 | } |
| 137 | } |
| 138 | |
| 139 | static void mt7615_eeprom_parse_hw_cap(struct mt7615_dev *dev) |
| 140 | { |
| 141 | u8 *eeprom = dev->mt76.eeprom.data; |
| 142 | u8 tx_mask, max_nss; |
| 143 | |
| 144 | mt7615_eeprom_parse_hw_band_cap(dev); |
| 145 | |
| 146 | if (is_mt7663(&dev->mt76)) { |
| 147 | max_nss = 2; |
| 148 | tx_mask = FIELD_GET(MT_EE_HW_CONF1_TX_MASK, |
| 149 | eeprom[MT7663_EE_HW_CONF1]); |
| 150 | } else { |
| 151 | u32 val; |
| 152 | |
| 153 | /* read tx-rx mask from eeprom */ |
| 154 | val = mt76_rr(dev, MT_TOP_STRAP_STA); |
| 155 | max_nss = val & MT_TOP_3NSS ? 3 : 4; |
| 156 | |
| 157 | tx_mask = FIELD_GET(MT_EE_NIC_CONF_TX_MASK, |
| 158 | eeprom[MT_EE_NIC_CONF_0]); |
| 159 | } |
| 160 | if (!tx_mask || tx_mask > max_nss) |
| 161 | tx_mask = max_nss; |
| 162 | |
| 163 | dev->chainmask = BIT(tx_mask) - 1; |
| 164 | dev->mphy.antenna_mask = dev->chainmask; |
| 165 | dev->mphy.chainmask = dev->chainmask; |
| 166 | } |
| 167 | |
| 168 | static int mt7663_eeprom_get_target_power_index(struct mt7615_dev *dev, |
| 169 | struct ieee80211_channel *chan, |
| 170 | u8 chain_idx) |
| 171 | { |
| 172 | int index, group; |
| 173 | |
| 174 | if (chain_idx > 1) |
| 175 | return -EINVAL; |
| 176 | |
| 177 | if (chan->band == NL80211_BAND_2GHZ) |
| 178 | return MT7663_EE_TX0_2G_TARGET_POWER + (chain_idx << 4); |
| 179 | |
| 180 | group = mt7615_get_channel_group(chan->hw_value); |
| 181 | if (chain_idx == 1) |
| 182 | index = MT7663_EE_TX1_5G_G0_TARGET_POWER; |
| 183 | else |
| 184 | index = MT7663_EE_TX0_5G_G0_TARGET_POWER; |
| 185 | |
| 186 | return index + group * 3; |
| 187 | } |
| 188 | |
| 189 | int mt7615_eeprom_get_target_power_index(struct mt7615_dev *dev, |
| 190 | struct ieee80211_channel *chan, |
| 191 | u8 chain_idx) |
| 192 | { |
| 193 | int index; |
| 194 | |
| 195 | if (is_mt7663(&dev->mt76)) |
| 196 | return mt7663_eeprom_get_target_power_index(dev, chan, |
| 197 | chain_idx); |
| 198 | |
| 199 | if (chain_idx > 3) |
| 200 | return -EINVAL; |
| 201 | |
| 202 | /* TSSI disabled */ |
| 203 | if (mt7615_ext_pa_enabled(dev, chan->band)) { |
| 204 | if (chan->band == NL80211_BAND_2GHZ) |
| 205 | return MT_EE_EXT_PA_2G_TARGET_POWER; |
| 206 | else |
| 207 | return MT_EE_EXT_PA_5G_TARGET_POWER; |
| 208 | } |
| 209 | |
| 210 | /* TSSI enabled */ |
| 211 | if (chan->band == NL80211_BAND_2GHZ) { |
| 212 | index = MT_EE_TX0_2G_TARGET_POWER + chain_idx * 6; |
| 213 | } else { |
| 214 | int group = mt7615_get_channel_group(chan->hw_value); |
| 215 | |
| 216 | switch (chain_idx) { |
| 217 | case 1: |
| 218 | index = MT_EE_TX1_5G_G0_TARGET_POWER; |
| 219 | break; |
| 220 | case 2: |
| 221 | index = MT_EE_TX2_5G_G0_TARGET_POWER; |
| 222 | break; |
| 223 | case 3: |
| 224 | index = MT_EE_TX3_5G_G0_TARGET_POWER; |
| 225 | break; |
| 226 | case 0: |
| 227 | default: |
| 228 | index = MT_EE_TX0_5G_G0_TARGET_POWER; |
| 229 | break; |
| 230 | } |
| 231 | index += 5 * group; |
| 232 | } |
| 233 | |
| 234 | return index; |
| 235 | } |
| 236 | |
| 237 | int mt7615_eeprom_get_power_delta_index(struct mt7615_dev *dev, |
| 238 | enum nl80211_band band) |
| 239 | { |
| 240 | /* assume the first rate has the highest power offset */ |
| 241 | if (is_mt7663(&dev->mt76)) { |
| 242 | if (band == NL80211_BAND_2GHZ) |
| 243 | return MT_EE_TX0_5G_G0_TARGET_POWER; |
| 244 | else |
| 245 | return MT7663_EE_5G_RATE_POWER; |
| 246 | } |
| 247 | |
| 248 | if (band == NL80211_BAND_2GHZ) |
| 249 | return MT_EE_2G_RATE_POWER; |
| 250 | else |
| 251 | return MT_EE_5G_RATE_POWER; |
| 252 | } |
| 253 | |
| 254 | static void mt7615_apply_cal_free_data(struct mt7615_dev *dev) |
| 255 | { |
| 256 | static const u16 ical[] = { |
| 257 | 0x53, 0x54, 0x55, 0x56, 0x57, 0x5c, 0x5d, 0x62, 0x63, 0x68, |
| 258 | 0x69, 0x6e, 0x6f, 0x73, 0x74, 0x78, 0x79, 0x82, 0x83, 0x87, |
| 259 | 0x88, 0x8c, 0x8d, 0x91, 0x92, 0x96, 0x97, 0x9b, 0x9c, 0xa0, |
| 260 | 0xa1, 0xaa, 0xab, 0xaf, 0xb0, 0xb4, 0xb5, 0xb9, 0xba, 0xf4, |
| 261 | 0xf7, 0xff, |
| 262 | 0x140, 0x141, 0x145, 0x146, 0x14a, 0x14b, 0x154, 0x155, 0x159, |
| 263 | 0x15a, 0x15e, 0x15f, 0x163, 0x164, 0x168, 0x169, 0x16d, 0x16e, |
| 264 | 0x172, 0x173, 0x17c, 0x17d, 0x181, 0x182, 0x186, 0x187, 0x18b, |
| 265 | 0x18c |
| 266 | }; |
| 267 | static const u16 ical_nocheck[] = { |
| 268 | 0x110, 0x111, 0x112, 0x113, 0x114, 0x115, 0x116, 0x117, 0x118, |
| 269 | 0x1b5, 0x1b6, 0x1b7, 0x3ac, 0x3ad, 0x3ae, 0x3af, 0x3b0, 0x3b1, |
| 270 | 0x3b2 |
| 271 | }; |
| 272 | u8 *eeprom = dev->mt76.eeprom.data; |
| 273 | u8 *otp = dev->mt76.otp.data; |
| 274 | int i; |
| 275 | |
| 276 | if (!otp) |
| 277 | return; |
| 278 | |
| 279 | for (i = 0; i < ARRAY_SIZE(ical); i++) |
| 280 | if (!otp[ical[i]]) |
| 281 | return; |
| 282 | |
| 283 | for (i = 0; i < ARRAY_SIZE(ical); i++) |
| 284 | eeprom[ical[i]] = otp[ical[i]]; |
| 285 | |
| 286 | for (i = 0; i < ARRAY_SIZE(ical_nocheck); i++) |
| 287 | eeprom[ical_nocheck[i]] = otp[ical_nocheck[i]]; |
| 288 | } |
| 289 | |
| 290 | static void mt7622_apply_cal_free_data(struct mt7615_dev *dev) |
| 291 | { |
| 292 | static const u16 ical[] = { |
| 293 | 0x53, 0x54, 0x55, 0x56, 0xf4, 0xf7, 0x144, 0x156, 0x15b |
| 294 | }; |
| 295 | u8 *eeprom = dev->mt76.eeprom.data; |
| 296 | u8 *otp = dev->mt76.otp.data; |
| 297 | int i; |
| 298 | |
| 299 | if (!otp) |
| 300 | return; |
| 301 | |
| 302 | for (i = 0; i < ARRAY_SIZE(ical); i++) { |
| 303 | if (!otp[ical[i]]) |
| 304 | continue; |
| 305 | |
| 306 | eeprom[ical[i]] = otp[ical[i]]; |
| 307 | } |
| 308 | } |
| 309 | |
| 310 | static void mt7615_cal_free_data(struct mt7615_dev *dev) |
| 311 | { |
| 312 | struct device_node *np = dev->mt76.dev->of_node; |
| 313 | |
| 314 | if (!np || !of_property_read_bool(np, "mediatek,eeprom-merge-otp")) |
| 315 | return; |
| 316 | |
| 317 | switch (mt76_chip(&dev->mt76)) { |
| 318 | case 0x7622: |
| 319 | mt7622_apply_cal_free_data(dev); |
| 320 | break; |
| 321 | case 0x7615: |
| 322 | case 0x7611: |
| 323 | mt7615_apply_cal_free_data(dev); |
| 324 | break; |
| 325 | } |
| 326 | } |
| 327 | |
| 328 | int mt7615_eeprom_init(struct mt7615_dev *dev, u32 addr) |
| 329 | { |
| 330 | int ret; |
| 331 | |
| 332 | ret = mt7615_eeprom_load(dev, addr); |
| 333 | if (ret < 0) |
| 334 | return ret; |
| 335 | |
| 336 | ret = mt7615_check_eeprom(&dev->mt76); |
| 337 | if (ret && dev->mt76.otp.data) { |
| 338 | memcpy(dev->mt76.eeprom.data, dev->mt76.otp.data, |
| 339 | MT7615_EEPROM_SIZE); |
| 340 | } else { |
| 341 | dev->flash_eeprom = true; |
| 342 | mt7615_cal_free_data(dev); |
| 343 | } |
| 344 | |
| 345 | mt7615_eeprom_parse_hw_cap(dev); |
| 346 | memcpy(dev->mphy.macaddr, dev->mt76.eeprom.data + MT_EE_MAC_ADDR, |
| 347 | ETH_ALEN); |
| 348 | |
| 349 | mt76_eeprom_override(&dev->mphy); |
| 350 | |
| 351 | return 0; |
| 352 | } |
| 353 | EXPORT_SYMBOL_GPL(mt7615_eeprom_init); |