drivers/net/wireless/mediatek/mt76/mt76x2_eeprom.c

   1 /*
   2  * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include <asm/unaligned.h>
  18 #include "mt76x2.h"
  19 #include "mt76x2_eeprom.h"
  20
  21 #define EE_FIELD(_name, _value) [MT_EE_##_name] = (_value) | 1
  22
  23 static int
  24 mt76x2_eeprom_copy(struct mt76x2_dev *dev, enum mt76x2_eeprom_field field,
  25                    void *dest, int len)
  26 {
  27         if (field + len > dev->mt76.eeprom.size)
  28                 return -1;
  29
  30         memcpy(dest, dev->mt76.eeprom.data + field, len);
  31         return 0;
  32 }
  33
  34 static int
  35 mt76x2_eeprom_get_macaddr(struct mt76x2_dev *dev)
  36 {
  37         void *src = dev->mt76.eeprom.data + MT_EE_MAC_ADDR;
  38
  39         memcpy(dev->mt76.macaddr, src, ETH_ALEN);
  40         return 0;
  41 }
  42
  43 static void
  44 mt76x2_eeprom_parse_hw_cap(struct mt76x2_dev *dev)
  45 {
  46         u16 val = mt76x2_eeprom_get(dev, MT_EE_NIC_CONF_0);
  47
  48         switch (FIELD_GET(MT_EE_NIC_CONF_0_BOARD_TYPE, val)) {
  49         case BOARD_TYPE_5GHZ:
  50                 dev->mt76.cap.has_5ghz = true;
  51                 break;
  52         case BOARD_TYPE_2GHZ:
  53                 dev->mt76.cap.has_2ghz = true;
  54                 break;
  55         default:
  56                 dev->mt76.cap.has_2ghz = true;
  57                 dev->mt76.cap.has_5ghz = true;
  58                 break;
  59         }
  60 }
  61
  62 static int
  63 mt76x2_efuse_read(struct mt76x2_dev *dev, u16 addr, u8 *data)
  64 {
  65         u32 val;
  66         int i;
  67
  68         val = mt76_rr(dev, MT_EFUSE_CTRL);
  69         val &= ~(MT_EFUSE_CTRL_AIN |
  70                  MT_EFUSE_CTRL_MODE);
  71         val |= FIELD_PREP(MT_EFUSE_CTRL_AIN, addr & ~0xf);
  72         val |= MT_EFUSE_CTRL_KICK;
  73         mt76_wr(dev, MT_EFUSE_CTRL, val);
  74
  75         if (!mt76_poll(dev, MT_EFUSE_CTRL, MT_EFUSE_CTRL_KICK, 0, 1000))
  76                 return -ETIMEDOUT;
  77
  78         udelay(2);
  79
  80         val = mt76_rr(dev, MT_EFUSE_CTRL);
  81         if ((val & MT_EFUSE_CTRL_AOUT) == MT_EFUSE_CTRL_AOUT) {
  82                 memset(data, 0xff, 16);
  83                 return 0;
  84         }
  85
  86         for (i = 0; i < 4; i++) {
  87                 val = mt76_rr(dev, MT_EFUSE_DATA(i));
  88                 put_unaligned_le32(val, data + 4 * i);
  89         }
  90
  91         return 0;
  92 }
  93
  94 static int
  95 mt76x2_get_efuse_data(struct mt76x2_dev *dev, void *buf, int len)
  96 {
  97         int ret, i;
  98
  99         for (i = 0; i + 16 <= len; i += 16) {
 100                 ret = mt76x2_efuse_read(dev, i, buf + i);
 101                 if (ret)
 102                         return ret;
 103         }
 104
 105         return 0;
 106 }
 107
 108 static bool
 109 mt76x2_has_cal_free_data(struct mt76x2_dev *dev, u8 *efuse)
 110 {
 111         u16 *efuse_w = (u16 *) efuse;
 112
 113         if (efuse_w[MT_EE_NIC_CONF_0] != 0)
 114                 return false;
 115
 116         if (efuse_w[MT_EE_XTAL_TRIM_1] == 0xffff)
 117                 return false;
 118
 119         if (efuse_w[MT_EE_TX_POWER_DELTA_BW40] != 0)
 120                 return false;
 121
 122         if (efuse_w[MT_EE_TX_POWER_0_START_2G] == 0xffff)
 123                 return false;
 124
 125         if (efuse_w[MT_EE_TX_POWER_0_GRP3_TX_POWER_DELTA] != 0)
 126                 return false;
 127
 128         if (efuse_w[MT_EE_TX_POWER_0_GRP4_TSSI_SLOPE] == 0xffff)
 129                 return false;
 130
 131         return true;
 132 }
 133
 134 static void
 135 mt76x2_apply_cal_free_data(struct mt76x2_dev *dev, u8 *efuse)
 136 {
 137 #define GROUP_5G(_id)                                                      \
 138         MT_EE_TX_POWER_0_START_5G + MT_TX_POWER_GROUP_SIZE_5G * (_id),     \
 139         MT_EE_TX_POWER_0_START_5G + MT_TX_POWER_GROUP_SIZE_5G * (_id) + 1, \
 140         MT_EE_TX_POWER_1_START_5G + MT_TX_POWER_GROUP_SIZE_5G * (_id),     \
 141         MT_EE_TX_POWER_1_START_5G + MT_TX_POWER_GROUP_SIZE_5G * (_id) + 1
 142
 143         static const u8 cal_free_bytes[] = {
 144                 MT_EE_XTAL_TRIM_1,
 145                 MT_EE_TX_POWER_EXT_PA_5G + 1,
 146                 MT_EE_TX_POWER_0_START_2G,
 147                 MT_EE_TX_POWER_0_START_2G + 1,
 148                 MT_EE_TX_POWER_1_START_2G,
 149                 MT_EE_TX_POWER_1_START_2G + 1,
 150                 GROUP_5G(0),
 151                 GROUP_5G(1),
 152                 GROUP_5G(2),
 153                 GROUP_5G(3),
 154                 GROUP_5G(4),
 155                 GROUP_5G(5),
 156                 MT_EE_RF_2G_TSSI_OFF_TXPOWER,
 157                 MT_EE_RF_2G_RX_HIGH_GAIN + 1,
 158                 MT_EE_RF_5G_GRP0_1_RX_HIGH_GAIN,
 159                 MT_EE_RF_5G_GRP0_1_RX_HIGH_GAIN + 1,
 160                 MT_EE_RF_5G_GRP2_3_RX_HIGH_GAIN,
 161                 MT_EE_RF_5G_GRP2_3_RX_HIGH_GAIN + 1,
 162                 MT_EE_RF_5G_GRP4_5_RX_HIGH_GAIN,
 163                 MT_EE_RF_5G_GRP4_5_RX_HIGH_GAIN + 1,
 164         };
 165         u8 *eeprom = dev->mt76.eeprom.data;
 166         u8 prev_grp0[4] = {
 167                 eeprom[MT_EE_TX_POWER_0_START_5G],
 168                 eeprom[MT_EE_TX_POWER_0_START_5G + 1],
 169                 eeprom[MT_EE_TX_POWER_1_START_5G],
 170                 eeprom[MT_EE_TX_POWER_1_START_5G + 1]
 171         };
 172         u16 val;
 173         int i;
 174
 175         if (!mt76x2_has_cal_free_data(dev, efuse))
 176                 return;
 177
 178         for (i = 0; i < ARRAY_SIZE(cal_free_bytes); i++) {
 179                 int offset = cal_free_bytes[i];
 180
 181                 eeprom[offset] = efuse[offset];
 182         }
 183
 184         if (!(efuse[MT_EE_TX_POWER_0_START_5G] |
 185               efuse[MT_EE_TX_POWER_0_START_5G + 1]))
 186                 memcpy(eeprom + MT_EE_TX_POWER_0_START_5G, prev_grp0, 2);
 187         if (!(efuse[MT_EE_TX_POWER_1_START_5G] |
 188               efuse[MT_EE_TX_POWER_1_START_5G + 1]))
 189                 memcpy(eeprom + MT_EE_TX_POWER_1_START_5G, prev_grp0 + 2, 2);
 190
 191         val = get_unaligned_le16(efuse + MT_EE_BT_RCAL_RESULT);
 192         if (val != 0xffff)
 193                 eeprom[MT_EE_BT_RCAL_RESULT] = val & 0xff;
 194
 195         val = get_unaligned_le16(efuse + MT_EE_BT_VCDL_CALIBRATION);
 196         if (val != 0xffff)
 197                 eeprom[MT_EE_BT_VCDL_CALIBRATION + 1] = val >> 8;
 198
 199         val = get_unaligned_le16(efuse + MT_EE_BT_PMUCFG);
 200         if (val != 0xffff)
 201                 eeprom[MT_EE_BT_PMUCFG] = val & 0xff;
 202 }
 203
 204 static int mt76x2_check_eeprom(struct mt76x2_dev *dev)
 205 {
 206         u16 val = get_unaligned_le16(dev->mt76.eeprom.data);
 207
 208         if (!val)
 209                 val = get_unaligned_le16(dev->mt76.eeprom.data + MT_EE_PCI_ID);
 210
 211         switch (val) {
 212         case 0x7662:
 213         case 0x7612:
 214                 return 0;
 215         default:
 216                 dev_err(dev->mt76.dev, "EEPROM data check failed: %04x\n", val);
 217                 return -EINVAL;
 218         }
 219 }
 220
 221 static int
 222 mt76x2_eeprom_load(struct mt76x2_dev *dev)
 223 {
 224         void *efuse;
 225         int len = MT7662_EEPROM_SIZE;
 226         bool found;
 227         int ret;
 228
 229         ret = mt76_eeprom_init(&dev->mt76, len);
 230         if (ret < 0)
 231                 return ret;
 232
 233         found = ret;
 234         if (found)
 235                 found = !mt76x2_check_eeprom(dev);
 236
 237         dev->mt76.otp.data = devm_kzalloc(dev->mt76.dev, len, GFP_KERNEL);
 238         dev->mt76.otp.size = len;
 239         if (!dev->mt76.otp.data)
 240                 return -ENOMEM;
 241
 242         efuse = dev->mt76.otp.data;
 243
 244         if (mt76x2_get_efuse_data(dev, efuse, len))
 245                 goto out;
 246
 247         if (found) {
 248                 mt76x2_apply_cal_free_data(dev, efuse);
 249         } else {
 250                 /* FIXME: check if efuse data is complete */
 251                 found = true;
 252                 memcpy(dev->mt76.eeprom.data, efuse, len);
 253         }
 254
 255 out:
 256         if (!found)
 257                 return -ENOENT;
 258
 259         return 0;
 260 }
 261
 262 static inline int
 263 mt76x2_sign_extend(u32 val, unsigned int size)
 264 {
 265         bool sign = val & BIT(size - 1);
 266
 267         val &= BIT(size - 1) - 1;
 268
 269         return sign ? val : -val;
 270 }
 271
 272 static inline int
 273 mt76x2_sign_extend_optional(u32 val, unsigned int size)
 274 {
 275         bool enable = val & BIT(size);
 276
 277         return enable ? mt76x2_sign_extend(val, size) : 0;
 278 }
 279
 280 static bool
 281 field_valid(u8 val)
 282 {
 283         return val != 0 && val != 0xff;
 284 }
 285
 286 static void
 287 mt76x2_set_rx_gain_group(struct mt76x2_dev *dev, u8 val)
 288 {
 289         s8 *dest = dev->cal.rx.high_gain;
 290
 291         if (!field_valid(val)) {
 292                 dest[0] = 0;
 293                 dest[1] = 0;
 294                 return;
 295         }
 296
 297         dest[0] = mt76x2_sign_extend(val, 4);
 298         dest[1] = mt76x2_sign_extend(val >> 4, 4);
 299 }
 300
 301 static void
 302 mt76x2_set_rssi_offset(struct mt76x2_dev *dev, int chain, u8 val)
 303 {
 304         s8 *dest = dev->cal.rx.rssi_offset;
 305
 306         if (!field_valid(val)) {
 307                 dest[chain] = 0;
 308                 return;
 309         }
 310
 311         dest[chain] = mt76x2_sign_extend_optional(val, 7);
 312 }
 313
 314 static enum mt76x2_cal_channel_group
 315 mt76x2_get_cal_channel_group(int channel)
 316 {
 317         if (channel >= 184 && channel <= 196)
 318                 return MT_CH_5G_JAPAN;
 319         if (channel <= 48)
 320                 return MT_CH_5G_UNII_1;
 321         if (channel <= 64)
 322                 return MT_CH_5G_UNII_2;
 323         if (channel <= 114)
 324                 return MT_CH_5G_UNII_2E_1;
 325         if (channel <= 144)
 326                 return MT_CH_5G_UNII_2E_2;
 327         return MT_CH_5G_UNII_3;
 328 }
 329
 330 static u8
 331 mt76x2_get_5g_rx_gain(struct mt76x2_dev *dev, u8 channel)
 332 {
 333         enum mt76x2_cal_channel_group group;
 334
 335         group = mt76x2_get_cal_channel_group(channel);
 336         switch (group) {
 337         case MT_CH_5G_JAPAN:
 338                 return mt76x2_eeprom_get(dev, MT_EE_RF_5G_GRP0_1_RX_HIGH_GAIN);
 339         case MT_CH_5G_UNII_1:
 340                 return mt76x2_eeprom_get(dev, MT_EE_RF_5G_GRP0_1_RX_HIGH_GAIN) >> 8;
 341         case MT_CH_5G_UNII_2:
 342                 return mt76x2_eeprom_get(dev, MT_EE_RF_5G_GRP2_3_RX_HIGH_GAIN);
 343         case MT_CH_5G_UNII_2E_1:
 344                 return mt76x2_eeprom_get(dev, MT_EE_RF_5G_GRP2_3_RX_HIGH_GAIN) >> 8;
 345         case MT_CH_5G_UNII_2E_2:
 346                 return mt76x2_eeprom_get(dev, MT_EE_RF_5G_GRP4_5_RX_HIGH_GAIN);
 347         default:
 348                 return mt76x2_eeprom_get(dev, MT_EE_RF_5G_GRP4_5_RX_HIGH_GAIN) >> 8;
 349         }
 350 }
 351
 352 void mt76x2_read_rx_gain(struct mt76x2_dev *dev)
 353 {
 354         struct ieee80211_channel *chan = dev->mt76.chandef.chan;
 355         int channel = chan->hw_value;
 356         s8 lna_5g[3], lna_2g;
 357         u8 lna;
 358         u16 val;
 359
 360         if (chan->band == NL80211_BAND_2GHZ)
 361                 val = mt76x2_eeprom_get(dev, MT_EE_RF_2G_RX_HIGH_GAIN) >> 8;
 362         else
 363                 val = mt76x2_get_5g_rx_gain(dev, channel);
 364
 365         mt76x2_set_rx_gain_group(dev, val);
 366
 367         if (chan->band == NL80211_BAND_2GHZ) {
 368                 val = mt76x2_eeprom_get(dev, MT_EE_RSSI_OFFSET_2G_0);
 369                 mt76x2_set_rssi_offset(dev, 0, val);
 370                 mt76x2_set_rssi_offset(dev, 1, val >> 8);
 371         } else {
 372                 val = mt76x2_eeprom_get(dev, MT_EE_RSSI_OFFSET_5G_0);
 373                 mt76x2_set_rssi_offset(dev, 0, val);
 374                 mt76x2_set_rssi_offset(dev, 1, val >> 8);
 375         }
 376
 377         val = mt76x2_eeprom_get(dev, MT_EE_LNA_GAIN);
 378         lna_2g = val & 0xff;
 379         lna_5g[0] = val >> 8;
 380
 381         val = mt76x2_eeprom_get(dev, MT_EE_RSSI_OFFSET_2G_1);
 382         lna_5g[1] = val >> 8;
 383
 384         val = mt76x2_eeprom_get(dev, MT_EE_RSSI_OFFSET_5G_1);
 385         lna_5g[2] = val >> 8;
 386
 387         if (!field_valid(lna_5g[1]))
 388                 lna_5g[1] = lna_5g[0];
 389
 390         if (!field_valid(lna_5g[2]))
 391                 lna_5g[2] = lna_5g[0];
 392
 393         dev->cal.rx.mcu_gain =  (lna_2g & 0xff);
 394         dev->cal.rx.mcu_gain |= (lna_5g[0] & 0xff) << 8;
 395         dev->cal.rx.mcu_gain |= (lna_5g[1] & 0xff) << 16;
 396         dev->cal.rx.mcu_gain |= (lna_5g[2] & 0xff) << 24;
 397
 398         val = mt76x2_eeprom_get(dev, MT_EE_NIC_CONF_1);
 399         if (val & MT_EE_NIC_CONF_1_LNA_EXT_2G)
 400                 lna_2g = 0;
 401         if (val & MT_EE_NIC_CONF_1_LNA_EXT_5G)
 402                 memset(lna_5g, 0, sizeof(lna_5g));
 403
 404         if (chan->band == NL80211_BAND_2GHZ)
 405                 lna = lna_2g;
 406         else if (channel <= 64)
 407                 lna = lna_5g[0];
 408         else if (channel <= 128)
 409                 lna = lna_5g[1];
 410         else
 411                 lna = lna_5g[2];
 412
 413         if (lna == 0xff)
 414                 lna = 0;
 415
 416         dev->cal.rx.lna_gain = mt76x2_sign_extend(lna, 8);
 417 }
 418
 419 static s8
 420 mt76x2_rate_power_val(u8 val)
 421 {
 422         if (!field_valid(val))
 423                 return 0;
 424
 425         return mt76x2_sign_extend_optional(val, 7);
 426 }
 427
 428 void mt76x2_get_rate_power(struct mt76x2_dev *dev, struct mt76_rate_power *t,
 429                            struct ieee80211_channel *chan)
 430 {
 431         bool is_5ghz;
 432         u16 val;
 433
 434         is_5ghz = chan->band == NL80211_BAND_5GHZ;
 435
 436         memset(t, 0, sizeof(*t));
 437
 438         val = mt76x2_eeprom_get(dev, MT_EE_TX_POWER_CCK);
 439         t->cck[0] = t->cck[1] = mt76x2_rate_power_val(val);
 440         t->cck[2] = t->cck[3] = mt76x2_rate_power_val(val >> 8);
 441
 442         if (is_5ghz)
 443                 val = mt76x2_eeprom_get(dev, MT_EE_TX_POWER_OFDM_5G_6M);
 444         else
 445                 val = mt76x2_eeprom_get(dev, MT_EE_TX_POWER_OFDM_2G_6M);
 446         t->ofdm[0] = t->ofdm[1] = mt76x2_rate_power_val(val);
 447         t->ofdm[2] = t->ofdm[3] = mt76x2_rate_power_val(val >> 8);
 448
 449         if (is_5ghz)
 450                 val = mt76x2_eeprom_get(dev, MT_EE_TX_POWER_OFDM_5G_24M);
 451         else
 452                 val = mt76x2_eeprom_get(dev, MT_EE_TX_POWER_OFDM_2G_24M);
 453         t->ofdm[4] = t->ofdm[5] = mt76x2_rate_power_val(val);
 454         t->ofdm[6] = t->ofdm[7] = mt76x2_rate_power_val(val >> 8);
 455
 456         val = mt76x2_eeprom_get(dev, MT_EE_TX_POWER_HT_MCS0);
 457         t->ht[0] = t->ht[1] = mt76x2_rate_power_val(val);
 458         t->ht[2] = t->ht[3] = mt76x2_rate_power_val(val >> 8);
 459
 460         val = mt76x2_eeprom_get(dev, MT_EE_TX_POWER_HT_MCS4);
 461         t->ht[4] = t->ht[5] = mt76x2_rate_power_val(val);
 462         t->ht[6] = t->ht[7] = mt76x2_rate_power_val(val >> 8);
 463
 464         val = mt76x2_eeprom_get(dev, MT_EE_TX_POWER_HT_MCS8);
 465         t->ht[8] = t->ht[9] = mt76x2_rate_power_val(val);
 466         t->ht[10] = t->ht[11] = mt76x2_rate_power_val(val >> 8);
 467
 468         val = mt76x2_eeprom_get(dev, MT_EE_TX_POWER_HT_MCS12);
 469         t->ht[12] = t->ht[13] = mt76x2_rate_power_val(val);
 470         t->ht[14] = t->ht[15] = mt76x2_rate_power_val(val >> 8);
 471
 472         val = mt76x2_eeprom_get(dev, MT_EE_TX_POWER_VHT_MCS0);
 473         t->vht[0] = t->vht[1] = mt76x2_rate_power_val(val);
 474         t->vht[2] = t->vht[3] = mt76x2_rate_power_val(val >> 8);
 475
 476         val = mt76x2_eeprom_get(dev, MT_EE_TX_POWER_VHT_MCS4);
 477         t->vht[4] = t->vht[5] = mt76x2_rate_power_val(val);
 478         t->vht[6] = t->vht[7] = mt76x2_rate_power_val(val >> 8);
 479
 480         val = mt76x2_eeprom_get(dev, MT_EE_TX_POWER_VHT_MCS8);
 481         if (!is_5ghz)
 482                 val >>= 8;
 483         t->vht[8] = t->vht[9] = mt76x2_rate_power_val(val >> 8);
 484 }
 485
 486 int mt76x2_get_max_rate_power(struct mt76_rate_power *r)
 487 {
 488         int i;
 489         s8 ret = 0;
 490
 491         for (i = 0; i < sizeof(r->all); i++)
 492                 ret = max(ret, r->all[i]);
 493
 494         return ret;
 495 }
 496
 497 static void
 498 mt76x2_get_power_info_2g(struct mt76x2_dev *dev, struct mt76x2_tx_power_info *t,
 499                          struct ieee80211_channel *chan, int chain, int offset)
 500 {
 501         int channel = chan->hw_value;
 502         int delta_idx;
 503         u8 data[6];
 504         u16 val;
 505
 506         if (channel < 6)
 507                 delta_idx = 3;
 508         else if (channel < 11)
 509                 delta_idx = 4;
 510         else
 511                 delta_idx = 5;
 512
 513         mt76x2_eeprom_copy(dev, offset, data, sizeof(data));
 514
 515         t->chain[chain].tssi_slope = data[0];
 516         t->chain[chain].tssi_offset = data[1];
 517         t->chain[chain].target_power = data[2];
 518         t->chain[chain].delta = mt76x2_sign_extend_optional(data[delta_idx], 7);
 519
 520         val = mt76x2_eeprom_get(dev, MT_EE_RF_2G_TSSI_OFF_TXPOWER);
 521         t->target_power = val >> 8;
 522 }
 523
 524 static void
 525 mt76x2_get_power_info_5g(struct mt76x2_dev *dev, struct mt76x2_tx_power_info *t,
 526                          struct ieee80211_channel *chan, int chain, int offset)
 527 {
 528         int channel = chan->hw_value;
 529         enum mt76x2_cal_channel_group group;
 530         int delta_idx;
 531         u16 val;
 532         u8 data[5];
 533
 534         group = mt76x2_get_cal_channel_group(channel);
 535         offset += group * MT_TX_POWER_GROUP_SIZE_5G;
 536
 537         if (channel >= 192)
 538                 delta_idx = 4;
 539         else if (channel >= 184)
 540                 delta_idx = 3;
 541         else if (channel < 44)
 542                 delta_idx = 3;
 543         else if (channel < 52)
 544                 delta_idx = 4;
 545         else if (channel < 58)
 546                 delta_idx = 3;
 547         else if (channel < 98)
 548                 delta_idx = 4;
 549         else if (channel < 106)
 550                 delta_idx = 3;
 551         else if (channel < 116)
 552                 delta_idx = 4;
 553         else if (channel < 130)
 554                 delta_idx = 3;
 555         else if (channel < 149)
 556                 delta_idx = 4;
 557         else if (channel < 157)
 558                 delta_idx = 3;
 559         else
 560                 delta_idx = 4;
 561
 562         mt76x2_eeprom_copy(dev, offset, data, sizeof(data));
 563
 564         t->chain[chain].tssi_slope = data[0];
 565         t->chain[chain].tssi_offset = data[1];
 566         t->chain[chain].target_power = data[2];
 567         t->chain[chain].delta = mt76x2_sign_extend_optional(data[delta_idx], 7);
 568
 569         val = mt76x2_eeprom_get(dev, MT_EE_RF_2G_RX_HIGH_GAIN);
 570         t->target_power = val & 0xff;
 571 }
 572
 573 void mt76x2_get_power_info(struct mt76x2_dev *dev,
 574                            struct mt76x2_tx_power_info *t,
 575                            struct ieee80211_channel *chan)
 576 {
 577         u16 bw40, bw80;
 578
 579         memset(t, 0, sizeof(*t));
 580
 581         bw40 = mt76x2_eeprom_get(dev, MT_EE_TX_POWER_DELTA_BW40);
 582         bw80 = mt76x2_eeprom_get(dev, MT_EE_TX_POWER_DELTA_BW80);
 583
 584         if (chan->band == NL80211_BAND_5GHZ) {
 585                 bw40 >>= 8;
 586                 mt76x2_get_power_info_5g(dev, t, chan, 0,
 587                                          MT_EE_TX_POWER_0_START_5G);
 588                 mt76x2_get_power_info_5g(dev, t, chan, 1,
 589                                          MT_EE_TX_POWER_1_START_5G);
 590         } else {
 591                 mt76x2_get_power_info_2g(dev, t, chan, 0,
 592                                          MT_EE_TX_POWER_0_START_2G);
 593                 mt76x2_get_power_info_2g(dev, t, chan, 1,
 594                                          MT_EE_TX_POWER_1_START_2G);
 595         }
 596
 597         if (mt76x2_tssi_enabled(dev) || !field_valid(t->target_power))
 598                 t->target_power = t->chain[0].target_power;
 599
 600         t->delta_bw40 = mt76x2_rate_power_val(bw40);
 601         t->delta_bw80 = mt76x2_rate_power_val(bw80);
 602 }
 603
 604 int mt76x2_get_temp_comp(struct mt76x2_dev *dev, struct mt76x2_temp_comp *t)
 605 {
 606         enum nl80211_band band = dev->mt76.chandef.chan->band;
 607         u16 val, slope;
 608         u8 bounds;
 609
 610         memset(t, 0, sizeof(*t));
 611
 612         val = mt76x2_eeprom_get(dev, MT_EE_NIC_CONF_1);
 613         if (!(val & MT_EE_NIC_CONF_1_TEMP_TX_ALC))
 614                 return -EINVAL;
 615
 616         if (!mt76x2_ext_pa_enabled(dev, band))
 617                 return -EINVAL;
 618
 619         val = mt76x2_eeprom_get(dev, MT_EE_TX_POWER_EXT_PA_5G) >> 8;
 620         if (!(val & BIT(7)))
 621                 return -EINVAL;
 622
 623         t->temp_25_ref = val & 0x7f;
 624         if (band == NL80211_BAND_5GHZ) {
 625                 slope = mt76x2_eeprom_get(dev, MT_EE_RF_TEMP_COMP_SLOPE_5G);
 626                 bounds = mt76x2_eeprom_get(dev, MT_EE_TX_POWER_EXT_PA_5G);
 627         } else {
 628                 slope = mt76x2_eeprom_get(dev, MT_EE_RF_TEMP_COMP_SLOPE_2G);
 629                 bounds = mt76x2_eeprom_get(dev, MT_EE_TX_POWER_DELTA_BW80) >> 8;
 630         }
 631
 632         t->high_slope = slope & 0xff;
 633         t->low_slope = slope >> 8;
 634         t->lower_bound = 0 - (bounds & 0xf);
 635         t->upper_bound = (bounds >> 4) & 0xf;
 636
 637         return 0;
 638 }
 639
 640 bool mt76x2_ext_pa_enabled(struct mt76x2_dev *dev, enum nl80211_band band)
 641 {
 642         u16 conf0 = mt76x2_eeprom_get(dev, MT_EE_NIC_CONF_0);
 643
 644         if (band == NL80211_BAND_5GHZ)
 645                 return !(conf0 & MT_EE_NIC_CONF_0_PA_INT_5G);
 646         else
 647                 return !(conf0 & MT_EE_NIC_CONF_0_PA_INT_2G);
 648 }
 649
 650 int mt76x2_eeprom_init(struct mt76x2_dev *dev)
 651 {
 652         int ret;
 653
 654         ret = mt76x2_eeprom_load(dev);
 655         if (ret)
 656                 return ret;
 657
 658         mt76x2_eeprom_parse_hw_cap(dev);
 659         mt76x2_eeprom_get_macaddr(dev);
 660         mt76_eeprom_override(&dev->mt76);
 661         dev->mt76.macaddr[0] &= ~BIT(1);
 662
 663         return 0;
 664 }