git.oblomov.eu Git - linux-2.6/blob - drivers/net/wireless/b43/lo.c

   1 /*
   2
   3   Broadcom B43 wireless driver
   4
   5   G PHY LO (LocalOscillator) Measuring and Control routines
   6
   7   Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
   8   Copyright (c) 2005, 2006 Stefano Brivio <stefano.brivio@polimi.it>
   9   Copyright (c) 2005-2007 Michael Buesch <mb@bu3sch.de>
  10   Copyright (c) 2005, 2006 Danny van Dyk <kugelfang@gentoo.org>
  11   Copyright (c) 2005, 2006 Andreas Jaggi <andreas.jaggi@waterwave.ch>
  12
  13   This program is free software; you can redistribute it and/or modify
  14   it under the terms of the GNU General Public License as published by
  15   the Free Software Foundation; either version 2 of the License, or
  16   (at your option) any later version.
  17
  18   This program is distributed in the hope that it will be useful,
  19   but WITHOUT ANY WARRANTY; without even the implied warranty of
  20   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21   GNU General Public License for more details.
  22
  23   You should have received a copy of the GNU General Public License
  24   along with this program; see the file COPYING.  If not, write to
  25   the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
  26   Boston, MA 02110-1301, USA.
  27
  28 */
  29
  30 #include "b43.h"
  31 #include "lo.h"
  32 #include "phy.h"
  33 #include "main.h"
  34
  35 #include <linux/delay.h>
  36 #include <linux/sched.h>
  37
  38
  39 /* Define to 1 to always calibrate all possible LO control pairs.
  40  * This is a workaround until we fix the partial LO calibration optimization. */
  41 #define B43_CALIB_ALL_LOCTLS    1
  42
  43
  44 /* Write the LocalOscillator Control (adjust) value-pair. */
  45 static void b43_lo_write(struct b43_wldev *dev, struct b43_loctl *control)
  46 {
  47         struct b43_phy *phy = &dev->phy;
  48         u16 value;
  49         u16 reg;
  50
  51         if (B43_DEBUG) {
  52                 if (unlikely(abs(control->i) > 16 || abs(control->q) > 16)) {
  53                         b43dbg(dev->wl, "Invalid LO control pair "
  54                                "(I: %d, Q: %d)\n", control->i, control->q);
  55                         dump_stack();
  56                         return;
  57                 }
  58         }
  59
  60         value = (u8) (control->q);
  61         value |= ((u8) (control->i)) << 8;
  62
  63         reg = (phy->type == B43_PHYTYPE_B) ? 0x002F : B43_PHY_LO_CTL;
  64         b43_phy_write(dev, reg, value);
  65 }
  66
  67 static int assert_rfatt_and_bbatt(const struct b43_rfatt *rfatt,
  68                                   const struct b43_bbatt *bbatt,
  69                                   struct b43_wldev *dev)
  70 {
  71         int err = 0;
  72
  73         /* Check the attenuation values against the LO control array sizes. */
  74         if (unlikely(rfatt->att >= B43_NR_RF)) {
  75                 b43err(dev->wl, "rfatt(%u) >= size of LO array\n", rfatt->att);
  76                 err = -EINVAL;
  77         }
  78         if (unlikely(bbatt->att >= B43_NR_BB)) {
  79                 b43err(dev->wl, "bbatt(%u) >= size of LO array\n", bbatt->att);
  80                 err = -EINVAL;
  81         }
  82
  83         return err;
  84 }
  85
  86 #if !B43_CALIB_ALL_LOCTLS
  87 static
  88 struct b43_loctl *b43_get_lo_g_ctl_nopadmix(struct b43_wldev *dev,
  89                                             const struct b43_rfatt *rfatt,
  90                                             const struct b43_bbatt *bbatt)
  91 {
  92         struct b43_phy *phy = &dev->phy;
  93         struct b43_txpower_lo_control *lo = phy->lo_control;
  94
  95         if (assert_rfatt_and_bbatt(rfatt, bbatt, dev))
  96                 return &(lo->no_padmix[0][0]);  /* Just prevent a crash */
  97         return &(lo->no_padmix[bbatt->att][rfatt->att]);
  98 }
  99 #endif /* !B43_CALIB_ALL_LOCTLS */
 100
 101 struct b43_loctl *b43_get_lo_g_ctl(struct b43_wldev *dev,
 102                                    const struct b43_rfatt *rfatt,
 103                                    const struct b43_bbatt *bbatt)
 104 {
 105         struct b43_phy *phy = &dev->phy;
 106         struct b43_txpower_lo_control *lo = phy->lo_control;
 107
 108         if (assert_rfatt_and_bbatt(rfatt, bbatt, dev))
 109                 return &(lo->no_padmix[0][0]);  /* Just prevent a crash */
 110         if (rfatt->with_padmix)
 111                 return &(lo->with_padmix[bbatt->att][rfatt->att]);
 112         return &(lo->no_padmix[bbatt->att][rfatt->att]);
 113 }
 114
 115 /* Call a function for every possible LO control value-pair. */
 116 static void b43_call_for_each_loctl(struct b43_wldev *dev,
 117                                     void (*func) (struct b43_wldev *,
 118                                                   struct b43_loctl *))
 119 {
 120         struct b43_phy *phy = &dev->phy;
 121         struct b43_txpower_lo_control *ctl = phy->lo_control;
 122         int i, j;
 123
 124         for (i = 0; i < B43_NR_BB; i++) {
 125                 for (j = 0; j < B43_NR_RF; j++)
 126                         func(dev, &(ctl->with_padmix[i][j]));
 127         }
 128         for (i = 0; i < B43_NR_BB; i++) {
 129                 for (j = 0; j < B43_NR_RF; j++)
 130                         func(dev, &(ctl->no_padmix[i][j]));
 131         }
 132 }
 133
 134 static u16 lo_b_r15_loop(struct b43_wldev *dev)
 135 {
 136         int i;
 137         u16 ret = 0;
 138
 139         for (i = 0; i < 10; i++) {
 140                 b43_phy_write(dev, 0x0015, 0xAFA0);
 141                 udelay(1);
 142                 b43_phy_write(dev, 0x0015, 0xEFA0);
 143                 udelay(10);
 144                 b43_phy_write(dev, 0x0015, 0xFFA0);
 145                 udelay(40);
 146                 ret += b43_phy_read(dev, 0x002C);
 147         }
 148
 149         return ret;
 150 }
 151
 152 void b43_lo_b_measure(struct b43_wldev *dev)
 153 {
 154         struct b43_phy *phy = &dev->phy;
 155         u16 regstack[12] = { 0 };
 156         u16 mls;
 157         u16 fval;
 158         int i, j;
 159
 160         regstack[0] = b43_phy_read(dev, 0x0015);
 161         regstack[1] = b43_radio_read16(dev, 0x0052) & 0xFFF0;
 162
 163         if (phy->radio_ver == 0x2053) {
 164                 regstack[2] = b43_phy_read(dev, 0x000A);
 165                 regstack[3] = b43_phy_read(dev, 0x002A);
 166                 regstack[4] = b43_phy_read(dev, 0x0035);
 167                 regstack[5] = b43_phy_read(dev, 0x0003);
 168                 regstack[6] = b43_phy_read(dev, 0x0001);
 169                 regstack[7] = b43_phy_read(dev, 0x0030);
 170
 171                 regstack[8] = b43_radio_read16(dev, 0x0043);
 172                 regstack[9] = b43_radio_read16(dev, 0x007A);
 173                 regstack[10] = b43_read16(dev, 0x03EC);
 174                 regstack[11] = b43_radio_read16(dev, 0x0052) & 0x00F0;
 175
 176                 b43_phy_write(dev, 0x0030, 0x00FF);
 177                 b43_write16(dev, 0x03EC, 0x3F3F);
 178                 b43_phy_write(dev, 0x0035, regstack[4] & 0xFF7F);
 179                 b43_radio_write16(dev, 0x007A, regstack[9] & 0xFFF0);
 180         }
 181         b43_phy_write(dev, 0x0015, 0xB000);
 182         b43_phy_write(dev, 0x002B, 0x0004);
 183
 184         if (phy->radio_ver == 0x2053) {
 185                 b43_phy_write(dev, 0x002B, 0x0203);
 186                 b43_phy_write(dev, 0x002A, 0x08A3);
 187         }
 188
 189         phy->minlowsig[0] = 0xFFFF;
 190
 191         for (i = 0; i < 4; i++) {
 192                 b43_radio_write16(dev, 0x0052, regstack[1] | i);
 193                 lo_b_r15_loop(dev);
 194         }
 195         for (i = 0; i < 10; i++) {
 196                 b43_radio_write16(dev, 0x0052, regstack[1] | i);
 197                 mls = lo_b_r15_loop(dev) / 10;
 198                 if (mls < phy->minlowsig[0]) {
 199                         phy->minlowsig[0] = mls;
 200                         phy->minlowsigpos[0] = i;
 201                 }
 202         }
 203         b43_radio_write16(dev, 0x0052, regstack[1] | phy->minlowsigpos[0]);
 204
 205         phy->minlowsig[1] = 0xFFFF;
 206
 207         for (i = -4; i < 5; i += 2) {
 208                 for (j = -4; j < 5; j += 2) {
 209                         if (j < 0)
 210                                 fval = (0x0100 * i) + j + 0x0100;
 211                         else
 212                                 fval = (0x0100 * i) + j;
 213                         b43_phy_write(dev, 0x002F, fval);
 214                         mls = lo_b_r15_loop(dev) / 10;
 215                         if (mls < phy->minlowsig[1]) {
 216                                 phy->minlowsig[1] = mls;
 217                                 phy->minlowsigpos[1] = fval;
 218                         }
 219                 }
 220         }
 221         phy->minlowsigpos[1] += 0x0101;
 222
 223         b43_phy_write(dev, 0x002F, phy->minlowsigpos[1]);
 224         if (phy->radio_ver == 0x2053) {
 225                 b43_phy_write(dev, 0x000A, regstack[2]);
 226                 b43_phy_write(dev, 0x002A, regstack[3]);
 227                 b43_phy_write(dev, 0x0035, regstack[4]);
 228                 b43_phy_write(dev, 0x0003, regstack[5]);
 229                 b43_phy_write(dev, 0x0001, regstack[6]);
 230                 b43_phy_write(dev, 0x0030, regstack[7]);
 231
 232                 b43_radio_write16(dev, 0x0043, regstack[8]);
 233                 b43_radio_write16(dev, 0x007A, regstack[9]);
 234
 235                 b43_radio_write16(dev, 0x0052,
 236                                   (b43_radio_read16(dev, 0x0052) & 0x000F)
 237                                   | regstack[11]);
 238
 239                 b43_write16(dev, 0x03EC, regstack[10]);
 240         }
 241         b43_phy_write(dev, 0x0015, regstack[0]);
 242 }
 243
 244 static u16 lo_measure_feedthrough(struct b43_wldev *dev,
 245                                   u16 lna, u16 pga, u16 trsw_rx)
 246 {
 247         struct b43_phy *phy = &dev->phy;
 248         u16 rfover;
 249         u16 feedthrough;
 250
 251         if (phy->gmode) {
 252                 lna <<= B43_PHY_RFOVERVAL_LNA_SHIFT;
 253                 pga <<= B43_PHY_RFOVERVAL_PGA_SHIFT;
 254
 255                 B43_WARN_ON(lna & ~B43_PHY_RFOVERVAL_LNA);
 256                 B43_WARN_ON(pga & ~B43_PHY_RFOVERVAL_PGA);
 257 /*FIXME This assertion fails            B43_WARN_ON(trsw_rx & ~(B43_PHY_RFOVERVAL_TRSWRX |
 258                                     B43_PHY_RFOVERVAL_BW));
 259 */
 260                 trsw_rx &= (B43_PHY_RFOVERVAL_TRSWRX | B43_PHY_RFOVERVAL_BW);
 261
 262                 /* Construct the RF Override Value */
 263                 rfover = B43_PHY_RFOVERVAL_UNK;
 264                 rfover |= pga;
 265                 rfover |= lna;
 266                 rfover |= trsw_rx;
 267                 if ((dev->dev->bus->sprom.boardflags_lo & B43_BFL_EXTLNA)
 268                     && phy->rev > 6)
 269                         rfover |= B43_PHY_RFOVERVAL_EXTLNA;
 270
 271                 b43_phy_write(dev, B43_PHY_PGACTL, 0xE300);
 272                 b43_phy_write(dev, B43_PHY_RFOVERVAL, rfover);
 273                 udelay(10);
 274                 rfover |= B43_PHY_RFOVERVAL_BW_LBW;
 275                 b43_phy_write(dev, B43_PHY_RFOVERVAL, rfover);
 276                 udelay(10);
 277                 rfover |= B43_PHY_RFOVERVAL_BW_LPF;
 278                 b43_phy_write(dev, B43_PHY_RFOVERVAL, rfover);
 279                 udelay(10);
 280                 b43_phy_write(dev, B43_PHY_PGACTL, 0xF300);
 281         } else {
 282                 pga |= B43_PHY_PGACTL_UNKNOWN;
 283                 b43_phy_write(dev, B43_PHY_PGACTL, pga);
 284                 udelay(10);
 285                 pga |= B43_PHY_PGACTL_LOWBANDW;
 286                 b43_phy_write(dev, B43_PHY_PGACTL, pga);
 287                 udelay(10);
 288                 pga |= B43_PHY_PGACTL_LPF;
 289                 b43_phy_write(dev, B43_PHY_PGACTL, pga);
 290         }
 291         udelay(21);
 292         feedthrough = b43_phy_read(dev, B43_PHY_LO_LEAKAGE);
 293
 294         /* This is a good place to check if we need to relax a bit,
 295          * as this is the main function called regularly
 296          * in the LO calibration. */
 297         cond_resched();
 298
 299         return feedthrough;
 300 }
 301
 302 /* TXCTL Register and Value Table.
 303  * Returns the "TXCTL Register".
 304  * "value" is the "TXCTL Value".
 305  * "pad_mix_gain" is the PAD Mixer Gain.
 306  */
 307 static u16 lo_txctl_register_table(struct b43_wldev *dev,
 308                                    u16 * value, u16 * pad_mix_gain)
 309 {
 310         struct b43_phy *phy = &dev->phy;
 311         u16 reg, v, padmix;
 312
 313         if (phy->type == B43_PHYTYPE_B) {
 314                 v = 0x30;
 315                 if (phy->radio_rev <= 5) {
 316                         reg = 0x43;
 317                         padmix = 0;
 318                 } else {
 319                         reg = 0x52;
 320                         padmix = 5;
 321                 }
 322         } else {
 323                 if (phy->rev >= 2 && phy->radio_rev == 8) {
 324                         reg = 0x43;
 325                         v = 0x10;
 326                         padmix = 2;
 327                 } else {
 328                         reg = 0x52;
 329                         v = 0x30;
 330                         padmix = 5;
 331                 }
 332         }
 333         if (value)
 334                 *value = v;
 335         if (pad_mix_gain)
 336                 *pad_mix_gain = padmix;
 337
 338         return reg;
 339 }
 340
 341 static void lo_measure_txctl_values(struct b43_wldev *dev)
 342 {
 343         struct b43_phy *phy = &dev->phy;
 344         struct b43_txpower_lo_control *lo = phy->lo_control;
 345         u16 reg, mask;
 346         u16 trsw_rx, pga;
 347         u16 radio_pctl_reg;
 348
 349         static const u8 tx_bias_values[] = {
 350                 0x09, 0x08, 0x0A, 0x01, 0x00,
 351                 0x02, 0x05, 0x04, 0x06,
 352         };
 353         static const u8 tx_magn_values[] = {
 354                 0x70, 0x40,
 355         };
 356
 357         if (!has_loopback_gain(phy)) {
 358                 radio_pctl_reg = 6;
 359                 trsw_rx = 2;
 360                 pga = 0;
 361         } else {
 362                 int lb_gain;    /* Loopback gain (in dB) */
 363
 364                 trsw_rx = 0;
 365                 lb_gain = phy->max_lb_gain / 2;
 366                 if (lb_gain > 10) {
 367                         radio_pctl_reg = 0;
 368                         pga = abs(10 - lb_gain) / 6;
 369                         pga = limit_value(pga, 0, 15);
 370                 } else {
 371                         int cmp_val;
 372                         int tmp;
 373
 374                         pga = 0;
 375                         cmp_val = 0x24;
 376                         if ((phy->rev >= 2) &&
 377                             (phy->radio_ver == 0x2050) && (phy->radio_rev == 8))
 378                                 cmp_val = 0x3C;
 379                         tmp = lb_gain;
 380                         if ((10 - lb_gain) < cmp_val)
 381                                 tmp = (10 - lb_gain);
 382                         if (tmp < 0)
 383                                 tmp += 6;
 384                         else
 385                                 tmp += 3;
 386                         cmp_val /= 4;
 387                         tmp /= 4;
 388                         if (tmp >= cmp_val)
 389                                 radio_pctl_reg = cmp_val;
 390                         else
 391                                 radio_pctl_reg = tmp;
 392                 }
 393         }
 394         b43_radio_write16(dev, 0x43, (b43_radio_read16(dev, 0x43)
 395                                       & 0xFFF0) | radio_pctl_reg);
 396         b43_phy_set_baseband_attenuation(dev, 2);
 397
 398         reg = lo_txctl_register_table(dev, &mask, NULL);
 399         mask = ~mask;
 400         b43_radio_write16(dev, reg, b43_radio_read16(dev, reg)
 401                           & mask);
 402
 403         if (has_tx_magnification(phy)) {
 404                 int i, j;
 405                 int feedthrough;
 406                 int min_feedth = 0xFFFF;
 407                 u8 tx_magn, tx_bias;
 408
 409                 for (i = 0; i < ARRAY_SIZE(tx_magn_values); i++) {
 410                         tx_magn = tx_magn_values[i];
 411                         b43_radio_write16(dev, 0x52,
 412                                           (b43_radio_read16(dev, 0x52)
 413                                            & 0xFF0F) | tx_magn);
 414                         for (j = 0; j < ARRAY_SIZE(tx_bias_values); j++) {
 415                                 tx_bias = tx_bias_values[j];
 416                                 b43_radio_write16(dev, 0x52,
 417                                                   (b43_radio_read16(dev, 0x52)
 418                                                    & 0xFFF0) | tx_bias);
 419                                 feedthrough =
 420                                     lo_measure_feedthrough(dev, 0, pga,
 421                                                            trsw_rx);
 422                                 if (feedthrough < min_feedth) {
 423                                         lo->tx_bias = tx_bias;
 424                                         lo->tx_magn = tx_magn;
 425                                         min_feedth = feedthrough;
 426                                 }
 427                                 if (lo->tx_bias == 0)
 428                                         break;
 429                         }
 430                         b43_radio_write16(dev, 0x52,
 431                                           (b43_radio_read16(dev, 0x52)
 432                                            & 0xFF00) | lo->tx_bias | lo->
 433                                           tx_magn);
 434                 }
 435         } else {
 436                 lo->tx_magn = 0;
 437                 lo->tx_bias = 0;
 438                 b43_radio_write16(dev, 0x52, b43_radio_read16(dev, 0x52)
 439                                   & 0xFFF0);    /* TX bias == 0 */
 440         }
 441 }
 442
 443 static void lo_read_power_vector(struct b43_wldev *dev)
 444 {
 445         struct b43_phy *phy = &dev->phy;
 446         struct b43_txpower_lo_control *lo = phy->lo_control;
 447         u16 i;
 448         u64 tmp;
 449         u64 power_vector = 0;
 450         int rf_offset, bb_offset;
 451         struct b43_loctl *loctl;
 452
 453         for (i = 0; i < 8; i += 2) {
 454                 tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x310 + i);
 455                 /* Clear the top byte. We get holes in the bitmap... */
 456                 tmp &= 0xFF;
 457                 power_vector |= (tmp << (i * 8));
 458                 /* Clear the vector on the device. */
 459                 b43_shm_write16(dev, B43_SHM_SHARED, 0x310 + i, 0);
 460         }
 461
 462         if (power_vector)
 463                 lo->power_vector = power_vector;
 464         power_vector = lo->power_vector;
 465
 466         for (i = 0; i < 64; i++) {
 467                 if (power_vector & ((u64) 1ULL << i)) {
 468                         /* Now figure out which b43_loctl corresponds
 469                          * to this bit.
 470                          */
 471                         rf_offset = i / lo->rfatt_list.len;
 472                         bb_offset = i % lo->rfatt_list.len;     //FIXME?
 473                         loctl =
 474                             b43_get_lo_g_ctl(dev,
 475                                              &lo->rfatt_list.list[rf_offset],
 476                                              &lo->bbatt_list.list[bb_offset]);
 477                         /* And mark it as "used", as the device told us
 478                          * through the bitmap it is using it.
 479                          */
 480                         loctl->used = 1;
 481                 }
 482         }
 483 }
 484
 485 /* 802.11/LO/GPHY/MeasuringGains */
 486 static void lo_measure_gain_values(struct b43_wldev *dev,
 487                                    s16 max_rx_gain, int use_trsw_rx)
 488 {
 489         struct b43_phy *phy = &dev->phy;
 490         u16 tmp;
 491
 492         if (max_rx_gain < 0)
 493                 max_rx_gain = 0;
 494
 495         if (has_loopback_gain(phy)) {
 496                 int trsw_rx = 0;
 497                 int trsw_rx_gain;
 498
 499                 if (use_trsw_rx) {
 500                         trsw_rx_gain = phy->trsw_rx_gain / 2;
 501                         if (max_rx_gain >= trsw_rx_gain) {
 502                                 trsw_rx_gain = max_rx_gain - trsw_rx_gain;
 503                                 trsw_rx = 0x20;
 504                         }
 505                 } else
 506                         trsw_rx_gain = max_rx_gain;
 507                 if (trsw_rx_gain < 9) {
 508                         phy->lna_lod_gain = 0;
 509                 } else {
 510                         phy->lna_lod_gain = 1;
 511                         trsw_rx_gain -= 8;
 512                 }
 513                 trsw_rx_gain = limit_value(trsw_rx_gain, 0, 0x2D);
 514                 phy->pga_gain = trsw_rx_gain / 3;
 515                 if (phy->pga_gain >= 5) {
 516                         phy->pga_gain -= 5;
 517                         phy->lna_gain = 2;
 518                 } else
 519                         phy->lna_gain = 0;
 520         } else {
 521                 phy->lna_gain = 0;
 522                 phy->trsw_rx_gain = 0x20;
 523                 if (max_rx_gain >= 0x14) {
 524                         phy->lna_lod_gain = 1;
 525                         phy->pga_gain = 2;
 526                 } else if (max_rx_gain >= 0x12) {
 527                         phy->lna_lod_gain = 1;
 528                         phy->pga_gain = 1;
 529                 } else if (max_rx_gain >= 0xF) {
 530                         phy->lna_lod_gain = 1;
 531                         phy->pga_gain = 0;
 532                 } else {
 533                         phy->lna_lod_gain = 0;
 534                         phy->pga_gain = 0;
 535                 }
 536         }
 537
 538         tmp = b43_radio_read16(dev, 0x7A);
 539         if (phy->lna_lod_gain == 0)
 540                 tmp &= ~0x0008;
 541         else
 542                 tmp |= 0x0008;
 543         b43_radio_write16(dev, 0x7A, tmp);
 544 }
 545
 546 struct lo_g_saved_values {
 547         u8 old_channel;
 548
 549         /* Core registers */
 550         u16 reg_3F4;
 551         u16 reg_3E2;
 552
 553         /* PHY registers */
 554         u16 phy_lo_mask;
 555         u16 phy_extg_01;
 556         u16 phy_dacctl_hwpctl;
 557         u16 phy_dacctl;
 558         u16 phy_cck_14;
 559         u16 phy_hpwr_tssictl;
 560         u16 phy_analogover;
 561         u16 phy_analogoverval;
 562         u16 phy_rfover;
 563         u16 phy_rfoverval;
 564         u16 phy_classctl;
 565         u16 phy_cck_3E;
 566         u16 phy_crs0;
 567         u16 phy_pgactl;
 568         u16 phy_cck_2A;
 569         u16 phy_syncctl;
 570         u16 phy_cck_30;
 571         u16 phy_cck_06;
 572
 573         /* Radio registers */
 574         u16 radio_43;
 575         u16 radio_7A;
 576         u16 radio_52;
 577 };
 578
 579 static void lo_measure_setup(struct b43_wldev *dev,
 580                              struct lo_g_saved_values *sav)
 581 {
 582         struct ssb_sprom *sprom = &dev->dev->bus->sprom;
 583         struct b43_phy *phy = &dev->phy;
 584         struct b43_txpower_lo_control *lo = phy->lo_control;
 585         u16 tmp;
 586
 587         if (b43_has_hardware_pctl(phy)) {
 588                 sav->phy_lo_mask = b43_phy_read(dev, B43_PHY_LO_MASK);
 589                 sav->phy_extg_01 = b43_phy_read(dev, B43_PHY_EXTG(0x01));
 590                 sav->phy_dacctl_hwpctl = b43_phy_read(dev, B43_PHY_DACCTL);
 591                 sav->phy_cck_14 = b43_phy_read(dev, B43_PHY_CCK(0x14));
 592                 sav->phy_hpwr_tssictl = b43_phy_read(dev, B43_PHY_HPWR_TSSICTL);
 593
 594                 b43_phy_write(dev, B43_PHY_HPWR_TSSICTL,
 595                               b43_phy_read(dev, B43_PHY_HPWR_TSSICTL)
 596                               | 0x100);
 597                 b43_phy_write(dev, B43_PHY_EXTG(0x01),
 598                               b43_phy_read(dev, B43_PHY_EXTG(0x01))
 599                               | 0x40);
 600                 b43_phy_write(dev, B43_PHY_DACCTL,
 601                               b43_phy_read(dev, B43_PHY_DACCTL)
 602                               | 0x40);
 603                 b43_phy_write(dev, B43_PHY_CCK(0x14),
 604                               b43_phy_read(dev, B43_PHY_CCK(0x14))
 605                               | 0x200);
 606         }
 607         if (phy->type == B43_PHYTYPE_B &&
 608             phy->radio_ver == 0x2050 && phy->radio_rev < 6) {
 609                 b43_phy_write(dev, B43_PHY_CCK(0x16), 0x410);
 610                 b43_phy_write(dev, B43_PHY_CCK(0x17), 0x820);
 611         }
 612         if (!lo->rebuild && b43_has_hardware_pctl(phy))
 613                 lo_read_power_vector(dev);
 614         if (phy->rev >= 2) {
 615                 sav->phy_analogover = b43_phy_read(dev, B43_PHY_ANALOGOVER);
 616                 sav->phy_analogoverval =
 617                     b43_phy_read(dev, B43_PHY_ANALOGOVERVAL);
 618                 sav->phy_rfover = b43_phy_read(dev, B43_PHY_RFOVER);
 619                 sav->phy_rfoverval = b43_phy_read(dev, B43_PHY_RFOVERVAL);
 620                 sav->phy_classctl = b43_phy_read(dev, B43_PHY_CLASSCTL);
 621                 sav->phy_cck_3E = b43_phy_read(dev, B43_PHY_CCK(0x3E));
 622                 sav->phy_crs0 = b43_phy_read(dev, B43_PHY_CRS0);
 623
 624                 b43_phy_write(dev, B43_PHY_CLASSCTL,
 625                               b43_phy_read(dev, B43_PHY_CLASSCTL)
 626                               & 0xFFFC);
 627                 b43_phy_write(dev, B43_PHY_CRS0, b43_phy_read(dev, B43_PHY_CRS0)
 628                               & 0x7FFF);
 629                 b43_phy_write(dev, B43_PHY_ANALOGOVER,
 630                               b43_phy_read(dev, B43_PHY_ANALOGOVER)
 631                               | 0x0003);
 632                 b43_phy_write(dev, B43_PHY_ANALOGOVERVAL,
 633                               b43_phy_read(dev, B43_PHY_ANALOGOVERVAL)
 634                               & 0xFFFC);
 635                 if (phy->type == B43_PHYTYPE_G) {
 636                         if ((phy->rev >= 7) &&
 637                             (sprom->boardflags_lo & B43_BFL_EXTLNA)) {
 638                                 b43_phy_write(dev, B43_PHY_RFOVER, 0x933);
 639                         } else {
 640                                 b43_phy_write(dev, B43_PHY_RFOVER, 0x133);
 641                         }
 642                 } else {
 643                         b43_phy_write(dev, B43_PHY_RFOVER, 0);
 644                 }
 645                 b43_phy_write(dev, B43_PHY_CCK(0x3E), 0);
 646         }
 647         sav->reg_3F4 = b43_read16(dev, 0x3F4);
 648         sav->reg_3E2 = b43_read16(dev, 0x3E2);
 649         sav->radio_43 = b43_radio_read16(dev, 0x43);
 650         sav->radio_7A = b43_radio_read16(dev, 0x7A);
 651         sav->phy_pgactl = b43_phy_read(dev, B43_PHY_PGACTL);
 652         sav->phy_cck_2A = b43_phy_read(dev, B43_PHY_CCK(0x2A));
 653         sav->phy_syncctl = b43_phy_read(dev, B43_PHY_SYNCCTL);
 654         sav->phy_dacctl = b43_phy_read(dev, B43_PHY_DACCTL);
 655
 656         if (!has_tx_magnification(phy)) {
 657                 sav->radio_52 = b43_radio_read16(dev, 0x52);
 658                 sav->radio_52 &= 0x00F0;
 659         }
 660         if (phy->type == B43_PHYTYPE_B) {
 661                 sav->phy_cck_30 = b43_phy_read(dev, B43_PHY_CCK(0x30));
 662                 sav->phy_cck_06 = b43_phy_read(dev, B43_PHY_CCK(0x06));
 663                 b43_phy_write(dev, B43_PHY_CCK(0x30), 0x00FF);
 664                 b43_phy_write(dev, B43_PHY_CCK(0x06), 0x3F3F);
 665         } else {
 666                 b43_write16(dev, 0x3E2, b43_read16(dev, 0x3E2)
 667                             | 0x8000);
 668         }
 669         b43_write16(dev, 0x3F4, b43_read16(dev, 0x3F4)
 670                     & 0xF000);
 671
 672         tmp =
 673             (phy->type == B43_PHYTYPE_G) ? B43_PHY_LO_MASK : B43_PHY_CCK(0x2E);
 674         b43_phy_write(dev, tmp, 0x007F);
 675
 676         tmp = sav->phy_syncctl;
 677         b43_phy_write(dev, B43_PHY_SYNCCTL, tmp & 0xFF7F);
 678         tmp = sav->radio_7A;
 679         b43_radio_write16(dev, 0x007A, tmp & 0xFFF0);
 680
 681         b43_phy_write(dev, B43_PHY_CCK(0x2A), 0x8A3);
 682         if (phy->type == B43_PHYTYPE_G ||
 683             (phy->type == B43_PHYTYPE_B &&
 684              phy->radio_ver == 0x2050 && phy->radio_rev >= 6)) {
 685                 b43_phy_write(dev, B43_PHY_CCK(0x2B), 0x1003);
 686         } else
 687                 b43_phy_write(dev, B43_PHY_CCK(0x2B), 0x0802);
 688         if (phy->rev >= 2)
 689                 b43_dummy_transmission(dev);
 690         b43_radio_selectchannel(dev, 6, 0);
 691         b43_radio_read16(dev, 0x51);    /* dummy read */
 692         if (phy->type == B43_PHYTYPE_G)
 693                 b43_phy_write(dev, B43_PHY_CCK(0x2F), 0);
 694         if (lo->rebuild)
 695                 lo_measure_txctl_values(dev);
 696         if (phy->type == B43_PHYTYPE_G && phy->rev >= 3) {
 697                 b43_phy_write(dev, B43_PHY_LO_MASK, 0xC078);
 698         } else {
 699                 if (phy->type == B43_PHYTYPE_B)
 700                         b43_phy_write(dev, B43_PHY_CCK(0x2E), 0x8078);
 701                 else
 702                         b43_phy_write(dev, B43_PHY_LO_MASK, 0x8078);
 703         }
 704 }
 705
 706 static void lo_measure_restore(struct b43_wldev *dev,
 707                                struct lo_g_saved_values *sav)
 708 {
 709         struct b43_phy *phy = &dev->phy;
 710         struct b43_txpower_lo_control *lo = phy->lo_control;
 711         u16 tmp;
 712
 713         if (phy->rev >= 2) {
 714                 b43_phy_write(dev, B43_PHY_PGACTL, 0xE300);
 715                 tmp = (phy->pga_gain << 8);
 716                 b43_phy_write(dev, B43_PHY_RFOVERVAL, tmp | 0xA0);
 717                 udelay(5);
 718                 b43_phy_write(dev, B43_PHY_RFOVERVAL, tmp | 0xA2);
 719                 udelay(2);
 720                 b43_phy_write(dev, B43_PHY_RFOVERVAL, tmp | 0xA3);
 721         } else {
 722                 tmp = (phy->pga_gain | 0xEFA0);
 723                 b43_phy_write(dev, B43_PHY_PGACTL, tmp);
 724         }
 725         if (b43_has_hardware_pctl(phy)) {
 726                 b43_gphy_dc_lt_init(dev);
 727         } else {
 728                 if (lo->rebuild)
 729                         b43_lo_g_adjust_to(dev, 3, 2, 0);
 730                 else
 731                         b43_lo_g_adjust(dev);
 732         }
 733         if (phy->type == B43_PHYTYPE_G) {
 734                 if (phy->rev >= 3)
 735                         b43_phy_write(dev, B43_PHY_CCK(0x2E), 0xC078);
 736                 else
 737                         b43_phy_write(dev, B43_PHY_CCK(0x2E), 0x8078);
 738                 if (phy->rev >= 2)
 739                         b43_phy_write(dev, B43_PHY_CCK(0x2F), 0x0202);
 740                 else
 741                         b43_phy_write(dev, B43_PHY_CCK(0x2F), 0x0101);
 742         }
 743         b43_write16(dev, 0x3F4, sav->reg_3F4);
 744         b43_phy_write(dev, B43_PHY_PGACTL, sav->phy_pgactl);
 745         b43_phy_write(dev, B43_PHY_CCK(0x2A), sav->phy_cck_2A);
 746         b43_phy_write(dev, B43_PHY_SYNCCTL, sav->phy_syncctl);
 747         b43_phy_write(dev, B43_PHY_DACCTL, sav->phy_dacctl);
 748         b43_radio_write16(dev, 0x43, sav->radio_43);
 749         b43_radio_write16(dev, 0x7A, sav->radio_7A);
 750         if (!has_tx_magnification(phy)) {
 751                 tmp = sav->radio_52;
 752                 b43_radio_write16(dev, 0x52, (b43_radio_read16(dev, 0x52)
 753                                               & 0xFF0F) | tmp);
 754         }
 755         b43_write16(dev, 0x3E2, sav->reg_3E2);
 756         if (phy->type == B43_PHYTYPE_B &&
 757             phy->radio_ver == 0x2050 && phy->radio_rev <= 5) {
 758                 b43_phy_write(dev, B43_PHY_CCK(0x30), sav->phy_cck_30);
 759                 b43_phy_write(dev, B43_PHY_CCK(0x06), sav->phy_cck_06);
 760         }
 761         if (phy->rev >= 2) {
 762                 b43_phy_write(dev, B43_PHY_ANALOGOVER, sav->phy_analogover);
 763                 b43_phy_write(dev, B43_PHY_ANALOGOVERVAL,
 764                               sav->phy_analogoverval);
 765                 b43_phy_write(dev, B43_PHY_CLASSCTL, sav->phy_classctl);
 766                 b43_phy_write(dev, B43_PHY_RFOVER, sav->phy_rfover);
 767                 b43_phy_write(dev, B43_PHY_RFOVERVAL, sav->phy_rfoverval);
 768                 b43_phy_write(dev, B43_PHY_CCK(0x3E), sav->phy_cck_3E);
 769                 b43_phy_write(dev, B43_PHY_CRS0, sav->phy_crs0);
 770         }
 771         if (b43_has_hardware_pctl(phy)) {
 772                 tmp = (sav->phy_lo_mask & 0xBFFF);
 773                 b43_phy_write(dev, B43_PHY_LO_MASK, tmp);
 774                 b43_phy_write(dev, B43_PHY_EXTG(0x01), sav->phy_extg_01);
 775                 b43_phy_write(dev, B43_PHY_DACCTL, sav->phy_dacctl_hwpctl);
 776                 b43_phy_write(dev, B43_PHY_CCK(0x14), sav->phy_cck_14);
 777                 b43_phy_write(dev, B43_PHY_HPWR_TSSICTL, sav->phy_hpwr_tssictl);
 778         }
 779         b43_radio_selectchannel(dev, sav->old_channel, 1);
 780 }
 781
 782 struct b43_lo_g_statemachine {
 783         int current_state;
 784         int nr_measured;
 785         int state_val_multiplier;
 786         u16 lowest_feedth;
 787         struct b43_loctl min_loctl;
 788 };
 789
 790 /* Loop over each possible value in this state. */
 791 static int lo_probe_possible_loctls(struct b43_wldev *dev,
 792                                     struct b43_loctl *probe_loctl,
 793                                     struct b43_lo_g_statemachine *d)
 794 {
 795         struct b43_phy *phy = &dev->phy;
 796         struct b43_txpower_lo_control *lo = phy->lo_control;
 797         struct b43_loctl test_loctl;
 798         struct b43_loctl orig_loctl;
 799         struct b43_loctl prev_loctl = {
 800                 .i = -100,
 801                 .q = -100,
 802         };
 803         int i;
 804         int begin, end;
 805         int found_lower = 0;
 806         u16 feedth;
 807
 808         static const struct b43_loctl modifiers[] = {
 809                 {.i = 1,.q = 1,},
 810                 {.i = 1,.q = 0,},
 811                 {.i = 1,.q = -1,},
 812                 {.i = 0,.q = -1,},
 813                 {.i = -1,.q = -1,},
 814                 {.i = -1,.q = 0,},
 815                 {.i = -1,.q = 1,},
 816                 {.i = 0,.q = 1,},
 817         };
 818
 819         if (d->current_state == 0) {
 820                 begin = 1;
 821                 end = 8;
 822         } else if (d->current_state % 2 == 0) {
 823                 begin = d->current_state - 1;
 824                 end = d->current_state + 1;
 825         } else {
 826                 begin = d->current_state - 2;
 827                 end = d->current_state + 2;
 828         }
 829         if (begin < 1)
 830                 begin += 8;
 831         if (end > 8)
 832                 end -= 8;
 833
 834         memcpy(&orig_loctl, probe_loctl, sizeof(struct b43_loctl));
 835         i = begin;
 836         d->current_state = i;
 837         while (1) {
 838                 B43_WARN_ON(!(i >= 1 && i <= 8));
 839                 memcpy(&test_loctl, &orig_loctl, sizeof(struct b43_loctl));
 840                 test_loctl.i += modifiers[i - 1].i * d->state_val_multiplier;
 841                 test_loctl.q += modifiers[i - 1].q * d->state_val_multiplier;
 842                 if ((test_loctl.i != prev_loctl.i ||
 843                      test_loctl.q != prev_loctl.q) &&
 844                     (abs(test_loctl.i) <= 16 && abs(test_loctl.q) <= 16)) {
 845                         b43_lo_write(dev, &test_loctl);
 846                         feedth = lo_measure_feedthrough(dev, phy->lna_gain,
 847                                                         phy->pga_gain,
 848                                                         phy->trsw_rx_gain);
 849                         if (feedth < d->lowest_feedth) {
 850                                 memcpy(probe_loctl, &test_loctl,
 851                                        sizeof(struct b43_loctl));
 852                                 found_lower = 1;
 853                                 d->lowest_feedth = feedth;
 854                                 if ((d->nr_measured < 2) &&
 855                                     (!has_loopback_gain(phy) || lo->rebuild))
 856                                         break;
 857                         }
 858                 }
 859                 memcpy(&prev_loctl, &test_loctl, sizeof(prev_loctl));
 860                 if (i == end)
 861                         break;
 862                 if (i == 8)
 863                         i = 1;
 864                 else
 865                         i++;
 866                 d->current_state = i;
 867         }
 868
 869         return found_lower;
 870 }
 871
 872 static void lo_probe_loctls_statemachine(struct b43_wldev *dev,
 873                                          struct b43_loctl *loctl,
 874                                          int *max_rx_gain)
 875 {
 876         struct b43_phy *phy = &dev->phy;
 877         struct b43_txpower_lo_control *lo = phy->lo_control;
 878         struct b43_lo_g_statemachine d;
 879         u16 feedth;
 880         int found_lower;
 881         struct b43_loctl probe_loctl;
 882         int max_repeat = 1, repeat_cnt = 0;
 883
 884         d.nr_measured = 0;
 885         d.state_val_multiplier = 1;
 886         if (has_loopback_gain(phy) && !lo->rebuild)
 887                 d.state_val_multiplier = 3;
 888
 889         memcpy(&d.min_loctl, loctl, sizeof(struct b43_loctl));
 890         if (has_loopback_gain(phy) && lo->rebuild)
 891                 max_repeat = 4;
 892         do {
 893                 b43_lo_write(dev, &d.min_loctl);
 894                 feedth = lo_measure_feedthrough(dev, phy->lna_gain,
 895                                                 phy->pga_gain,
 896                                                 phy->trsw_rx_gain);
 897                 if (!lo->rebuild && feedth < 0x258) {
 898                         if (feedth >= 0x12C)
 899                                 *max_rx_gain += 6;
 900                         else
 901                                 *max_rx_gain += 3;
 902                         feedth = lo_measure_feedthrough(dev, phy->lna_gain,
 903                                                         phy->pga_gain,
 904                                                         phy->trsw_rx_gain);
 905                 }
 906                 d.lowest_feedth = feedth;
 907
 908                 d.current_state = 0;
 909                 do {
 910                         B43_WARN_ON(!
 911                                     (d.current_state >= 0
 912                                      && d.current_state <= 8));
 913                         memcpy(&probe_loctl, &d.min_loctl,
 914                                sizeof(struct b43_loctl));
 915                         found_lower =
 916                             lo_probe_possible_loctls(dev, &probe_loctl, &d);
 917                         if (!found_lower)
 918                                 break;
 919                         if ((probe_loctl.i == d.min_loctl.i) &&
 920                             (probe_loctl.q == d.min_loctl.q))
 921                                 break;
 922                         memcpy(&d.min_loctl, &probe_loctl,
 923                                sizeof(struct b43_loctl));
 924                         d.nr_measured++;
 925                 } while (d.nr_measured < 24);
 926                 memcpy(loctl, &d.min_loctl, sizeof(struct b43_loctl));
 927
 928                 if (has_loopback_gain(phy)) {
 929                         if (d.lowest_feedth > 0x1194)
 930                                 *max_rx_gain -= 6;
 931                         else if (d.lowest_feedth < 0x5DC)
 932                                 *max_rx_gain += 3;
 933                         if (repeat_cnt == 0) {
 934                                 if (d.lowest_feedth <= 0x5DC) {
 935                                         d.state_val_multiplier = 1;
 936                                         repeat_cnt++;
 937                                 } else
 938                                         d.state_val_multiplier = 2;
 939                         } else if (repeat_cnt == 2)
 940                                 d.state_val_multiplier = 1;
 941                 }
 942                 lo_measure_gain_values(dev, *max_rx_gain,
 943                                        has_loopback_gain(phy));
 944         } while (++repeat_cnt < max_repeat);
 945 }
 946
 947 #if B43_CALIB_ALL_LOCTLS
 948 static const struct b43_rfatt b43_full_rfatt_list_items[] = {
 949         { .att = 0, .with_padmix = 0, },
 950         { .att = 1, .with_padmix = 0, },
 951         { .att = 2, .with_padmix = 0, },
 952         { .att = 3, .with_padmix = 0, },
 953         { .att = 4, .with_padmix = 0, },
 954         { .att = 5, .with_padmix = 0, },
 955         { .att = 6, .with_padmix = 0, },
 956         { .att = 7, .with_padmix = 0, },
 957         { .att = 8, .with_padmix = 0, },
 958         { .att = 9, .with_padmix = 0, },
 959         { .att = 10, .with_padmix = 0, },
 960         { .att = 11, .with_padmix = 0, },
 961         { .att = 12, .with_padmix = 0, },
 962         { .att = 13, .with_padmix = 0, },
 963         { .att = 14, .with_padmix = 0, },
 964         { .att = 15, .with_padmix = 0, },
 965         { .att = 0, .with_padmix = 1, },
 966         { .att = 1, .with_padmix = 1, },
 967         { .att = 2, .with_padmix = 1, },
 968         { .att = 3, .with_padmix = 1, },
 969         { .att = 4, .with_padmix = 1, },
 970         { .att = 5, .with_padmix = 1, },
 971         { .att = 6, .with_padmix = 1, },
 972         { .att = 7, .with_padmix = 1, },
 973         { .att = 8, .with_padmix = 1, },
 974         { .att = 9, .with_padmix = 1, },
 975         { .att = 10, .with_padmix = 1, },
 976         { .att = 11, .with_padmix = 1, },
 977         { .att = 12, .with_padmix = 1, },
 978         { .att = 13, .with_padmix = 1, },
 979         { .att = 14, .with_padmix = 1, },
 980         { .att = 15, .with_padmix = 1, },
 981 };
 982 static const struct b43_rfatt_list b43_full_rfatt_list = {
 983         .list           = b43_full_rfatt_list_items,
 984         .len            = ARRAY_SIZE(b43_full_rfatt_list_items),
 985 };
 986
 987 static const struct b43_bbatt b43_full_bbatt_list_items[] = {
 988         { .att = 0, },
 989         { .att = 1, },
 990         { .att = 2, },
 991         { .att = 3, },
 992         { .att = 4, },
 993         { .att = 5, },
 994         { .att = 6, },
 995         { .att = 7, },
 996         { .att = 8, },
 997         { .att = 9, },
 998         { .att = 10, },
 999         { .att = 11, },
1000 };
1001 static const struct b43_bbatt_list b43_full_bbatt_list = {
1002         .list           = b43_full_bbatt_list_items,
1003         .len            = ARRAY_SIZE(b43_full_bbatt_list_items),
1004 };
1005 #endif /* B43_CALIB_ALL_LOCTLS */
1006
1007 static void lo_measure(struct b43_wldev *dev)
1008 {
1009         struct b43_phy *phy = &dev->phy;
1010         struct b43_txpower_lo_control *lo = phy->lo_control;
1011         struct b43_loctl loctl = {
1012                 .i = 0,
1013                 .q = 0,
1014         };
1015         struct b43_loctl *ploctl;
1016         int max_rx_gain;
1017         int rfidx, bbidx;
1018         const struct b43_bbatt_list *bbatt_list;
1019         const struct b43_rfatt_list *rfatt_list;
1020
1021         /* Values from the "TXCTL Register and Value Table" */
1022         u16 txctl_reg;
1023         u16 txctl_value;
1024         u16 pad_mix_gain;
1025
1026         bbatt_list = &lo->bbatt_list;
1027         rfatt_list = &lo->rfatt_list;
1028 #if B43_CALIB_ALL_LOCTLS
1029         bbatt_list = &b43_full_bbatt_list;
1030         rfatt_list = &b43_full_rfatt_list;
1031 #endif
1032
1033         txctl_reg = lo_txctl_register_table(dev, &txctl_value, &pad_mix_gain);
1034
1035         for (rfidx = 0; rfidx < rfatt_list->len; rfidx++) {
1036
1037                 b43_radio_write16(dev, 0x43, (b43_radio_read16(dev, 0x43)
1038                                               & 0xFFF0) |
1039                                   rfatt_list->list[rfidx].att);
1040                 b43_radio_write16(dev, txctl_reg,
1041                                   (b43_radio_read16(dev, txctl_reg)
1042                                    & ~txctl_value)
1043                                   | (rfatt_list->list[rfidx].with_padmix ?
1044                                      txctl_value : 0));
1045
1046                 for (bbidx = 0; bbidx < bbatt_list->len; bbidx++) {
1047                         if (lo->rebuild) {
1048 #if B43_CALIB_ALL_LOCTLS
1049                                 ploctl = b43_get_lo_g_ctl(dev,
1050                                                           &rfatt_list->list[rfidx],
1051                                                           &bbatt_list->list[bbidx]);
1052 #else
1053                                 ploctl = b43_get_lo_g_ctl_nopadmix(dev,
1054                                                                    &rfatt_list->
1055                                                                    list[rfidx],
1056                                                                    &bbatt_list->
1057                                                                    list[bbidx]);
1058 #endif
1059                         } else {
1060                                 ploctl = b43_get_lo_g_ctl(dev,
1061                                                           &rfatt_list->list[rfidx],
1062                                                           &bbatt_list->list[bbidx]);
1063                                 if (!ploctl->used)
1064                                         continue;
1065                         }
1066                         memcpy(&loctl, ploctl, sizeof(loctl));
1067                         loctl.i = 0;
1068                         loctl.q = 0;
1069
1070                         max_rx_gain = rfatt_list->list[rfidx].att * 2;
1071                         max_rx_gain += bbatt_list->list[bbidx].att / 2;
1072                         if (rfatt_list->list[rfidx].with_padmix)
1073                                 max_rx_gain -= pad_mix_gain;
1074                         if (has_loopback_gain(phy))
1075                                 max_rx_gain += phy->max_lb_gain;
1076                         lo_measure_gain_values(dev, max_rx_gain,
1077                                                has_loopback_gain(phy));
1078
1079                         b43_phy_set_baseband_attenuation(dev,
1080                                                          bbatt_list->list[bbidx].att);
1081                         lo_probe_loctls_statemachine(dev, &loctl, &max_rx_gain);
1082                         if (phy->type == B43_PHYTYPE_B) {
1083                                 loctl.i++;
1084                                 loctl.q++;
1085                         }
1086                         b43_loctl_set_calibrated(&loctl, 1);
1087                         memcpy(ploctl, &loctl, sizeof(loctl));
1088                 }
1089         }
1090 }
1091
1092 #if B43_DEBUG
1093 static void do_validate_loctl(struct b43_wldev *dev, struct b43_loctl *control)
1094 {
1095         const int is_initializing = (b43_status(dev) == B43_STAT_UNINIT);
1096         int i = control->i;
1097         int q = control->q;
1098
1099         if (b43_loctl_is_calibrated(control)) {
1100                 if ((abs(i) > 16) || (abs(q) > 16))
1101                         goto error;
1102         } else {
1103                 if (control->used)
1104                         goto error;
1105                 if (dev->phy.lo_control->rebuild) {
1106                         control->i = 0;
1107                         control->q = 0;
1108                         if ((i != B43_LOCTL_POISON) ||
1109                             (q != B43_LOCTL_POISON))
1110                                 goto error;
1111                 }
1112         }
1113         if (is_initializing && control->used)
1114                 goto error;
1115
1116         return;
1117 error:
1118         b43err(dev->wl, "LO control pair validation failed "
1119                "(I: %d, Q: %d, used %u, calib: %u, initing: %d)\n",
1120                i, q, control->used,
1121                b43_loctl_is_calibrated(control),
1122                is_initializing);
1123 }
1124
1125 static void validate_all_loctls(struct b43_wldev *dev)
1126 {
1127         b43_call_for_each_loctl(dev, do_validate_loctl);
1128 }
1129
1130 static void do_reset_calib(struct b43_wldev *dev, struct b43_loctl *control)
1131 {
1132         if (dev->phy.lo_control->rebuild ||
1133             control->used) {
1134                 b43_loctl_set_calibrated(control, 0);
1135                 control->i = B43_LOCTL_POISON;
1136                 control->q = B43_LOCTL_POISON;
1137         }
1138 }
1139
1140 static void reset_all_loctl_calibration_states(struct b43_wldev *dev)
1141 {
1142         b43_call_for_each_loctl(dev, do_reset_calib);
1143 }
1144
1145 #else /* B43_DEBUG */
1146 static inline void validate_all_loctls(struct b43_wldev *dev) { }
1147 static inline void reset_all_loctl_calibration_states(struct b43_wldev *dev) { }
1148 #endif /* B43_DEBUG */
1149
1150 void b43_lo_g_measure(struct b43_wldev *dev)
1151 {
1152         struct b43_phy *phy = &dev->phy;
1153         struct lo_g_saved_values uninitialized_var(sav);
1154
1155         B43_WARN_ON((phy->type != B43_PHYTYPE_B) &&
1156                     (phy->type != B43_PHYTYPE_G));
1157
1158         sav.old_channel = phy->channel;
1159         lo_measure_setup(dev, &sav);
1160         reset_all_loctl_calibration_states(dev);
1161         lo_measure(dev);
1162         lo_measure_restore(dev, &sav);
1163
1164         validate_all_loctls(dev);
1165
1166         phy->lo_control->lo_measured = 1;
1167         phy->lo_control->rebuild = 0;
1168 }
1169
1170 #if B43_DEBUG
1171 static void validate_loctl_calibration(struct b43_wldev *dev,
1172                                        struct b43_loctl *loctl,
1173                                        struct b43_rfatt *rfatt,
1174                                        struct b43_bbatt *bbatt)
1175 {
1176         if (b43_loctl_is_calibrated(loctl))
1177                 return;
1178         if (!dev->phy.lo_control->lo_measured) {
1179                 /* On init we set the attenuation values before we
1180                  * calibrated the LO. I guess that's OK. */
1181                 return;
1182         }
1183         b43err(dev->wl, "Adjusting Local Oscillator to an uncalibrated "
1184                "control pair: rfatt=%u,%spadmix bbatt=%u\n",
1185                rfatt->att,
1186                (rfatt->with_padmix) ? "" : "no-",
1187                bbatt->att);
1188 }
1189 #else
1190 static inline void validate_loctl_calibration(struct b43_wldev *dev,
1191                                               struct b43_loctl *loctl,
1192                                               struct b43_rfatt *rfatt,
1193                                               struct b43_bbatt *bbatt)
1194 {
1195 }
1196 #endif
1197
1198 static inline void fixup_rfatt_for_txcontrol(struct b43_rfatt *rf,
1199                                              u8 tx_control)
1200 {
1201         if (tx_control & B43_TXCTL_TXMIX) {
1202                 if (rf->att < 5)
1203                         rf->att = 4;
1204         }
1205 }
1206
1207 void b43_lo_g_adjust(struct b43_wldev *dev)
1208 {
1209         struct b43_phy *phy = &dev->phy;
1210         struct b43_rfatt rf;
1211         struct b43_loctl *loctl;
1212
1213         memcpy(&rf, &phy->rfatt, sizeof(rf));
1214         fixup_rfatt_for_txcontrol(&rf, phy->tx_control);
1215
1216         loctl = b43_get_lo_g_ctl(dev, &rf, &phy->bbatt);
1217         validate_loctl_calibration(dev, loctl, &rf, &phy->bbatt);
1218         b43_lo_write(dev, loctl);
1219 }
1220
1221 void b43_lo_g_adjust_to(struct b43_wldev *dev,
1222                         u16 rfatt, u16 bbatt, u16 tx_control)
1223 {
1224         struct b43_rfatt rf;
1225         struct b43_bbatt bb;
1226         struct b43_loctl *loctl;
1227
1228         memset(&rf, 0, sizeof(rf));
1229         memset(&bb, 0, sizeof(bb));
1230         rf.att = rfatt;
1231         bb.att = bbatt;
1232         fixup_rfatt_for_txcontrol(&rf, tx_control);
1233         loctl = b43_get_lo_g_ctl(dev, &rf, &bb);
1234         validate_loctl_calibration(dev, loctl, &rf, &bb);
1235         b43_lo_write(dev, loctl);
1236 }
1237
1238 static void do_mark_unused(struct b43_wldev *dev, struct b43_loctl *control)
1239 {
1240         control->used = 0;
1241 }
1242
1243 void b43_lo_g_ctl_mark_all_unused(struct b43_wldev *dev)
1244 {
1245         struct b43_phy *phy = &dev->phy;
1246         struct b43_txpower_lo_control *lo = phy->lo_control;
1247
1248         b43_call_for_each_loctl(dev, do_mark_unused);
1249         lo->rebuild = 1;
1250 }
1251
1252 void b43_lo_g_ctl_mark_cur_used(struct b43_wldev *dev)
1253 {
1254         struct b43_phy *phy = &dev->phy;
1255         struct b43_rfatt rf;
1256
1257         memcpy(&rf, &phy->rfatt, sizeof(rf));
1258         fixup_rfatt_for_txcontrol(&rf, phy->tx_control);
1259
1260         b43_get_lo_g_ctl(dev, &rf, &phy->bbatt)->used = 1;
1261 }