drivers/net/wireless/ath/ath9k/ar9003_calib.c

   1 /*
   2  * Copyright (c) 2010-2011 Atheros Communications Inc.
   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 "hw.h"
  18 #include "hw-ops.h"
  19 #include "ar9003_phy.h"
  20 #include "ar9003_rtt.h"
  21 #include "ar9003_mci.h"
  22
  23 #define MAX_MEASUREMENT MAX_IQCAL_MEASUREMENT
  24 #define MAX_MAG_DELTA   11
  25 #define MAX_PHS_DELTA   10
  26
  27 struct coeff {
  28         int mag_coeff[AR9300_MAX_CHAINS][MAX_MEASUREMENT];
  29         int phs_coeff[AR9300_MAX_CHAINS][MAX_MEASUREMENT];
  30         int iqc_coeff[2];
  31 };
  32
  33 enum ar9003_cal_types {
  34         IQ_MISMATCH_CAL = BIT(0),
  35 };
  36
  37 static void ar9003_hw_setup_calibration(struct ath_hw *ah,
  38                                         struct ath9k_cal_list *currCal)
  39 {
  40         struct ath_common *common = ath9k_hw_common(ah);
  41
  42         /* Select calibration to run */
  43         switch (currCal->calData->calType) {
  44         case IQ_MISMATCH_CAL:
  45                 /*
  46                  * Start calibration with
  47                  * 2^(INIT_IQCAL_LOG_COUNT_MAX+1) samples
  48                  */
  49                 REG_RMW_FIELD(ah, AR_PHY_TIMING4,
  50                               AR_PHY_TIMING4_IQCAL_LOG_COUNT_MAX,
  51                               currCal->calData->calCountMax);
  52                 REG_WRITE(ah, AR_PHY_CALMODE, AR_PHY_CALMODE_IQ);
  53
  54                 ath_dbg(common, CALIBRATE,
  55                         "starting IQ Mismatch Calibration\n");
  56
  57                 /* Kick-off cal */
  58                 REG_SET_BIT(ah, AR_PHY_TIMING4, AR_PHY_TIMING4_DO_CAL);
  59                 break;
  60         default:
  61                 ath_err(common, "Invalid calibration type\n");
  62                 break;
  63         }
  64 }
  65
  66 /*
  67  * Generic calibration routine.
  68  * Recalibrate the lower PHY chips to account for temperature/environment
  69  * changes.
  70  */
  71 static bool ar9003_hw_per_calibration(struct ath_hw *ah,
  72                                       struct ath9k_channel *ichan,
  73                                       u8 rxchainmask,
  74                                       struct ath9k_cal_list *currCal)
  75 {
  76         struct ath9k_hw_cal_data *caldata = ah->caldata;
  77         /* Cal is assumed not done until explicitly set below */
  78         bool iscaldone = false;
  79
  80         /* Calibration in progress. */
  81         if (currCal->calState == CAL_RUNNING) {
  82                 /* Check to see if it has finished. */
  83                 if (!(REG_READ(ah, AR_PHY_TIMING4) & AR_PHY_TIMING4_DO_CAL)) {
  84                         /*
  85                         * Accumulate cal measures for active chains
  86                         */
  87                         currCal->calData->calCollect(ah);
  88                         ah->cal_samples++;
  89
  90                         if (ah->cal_samples >=
  91                             currCal->calData->calNumSamples) {
  92                                 unsigned int i, numChains = 0;
  93                                 for (i = 0; i < AR9300_MAX_CHAINS; i++) {
  94                                         if (rxchainmask & (1 << i))
  95                                                 numChains++;
  96                                 }
  97
  98                                 /*
  99                                 * Process accumulated data
 100                                 */
 101                                 currCal->calData->calPostProc(ah, numChains);
 102
 103                                 /* Calibration has finished. */
 104                                 caldata->CalValid |= currCal->calData->calType;
 105                                 currCal->calState = CAL_DONE;
 106                                 iscaldone = true;
 107                         } else {
 108                         /*
 109                          * Set-up collection of another sub-sample until we
 110                          * get desired number
 111                          */
 112                         ar9003_hw_setup_calibration(ah, currCal);
 113                         }
 114                 }
 115         } else if (!(caldata->CalValid & currCal->calData->calType)) {
 116                 /* If current cal is marked invalid in channel, kick it off */
 117                 ath9k_hw_reset_calibration(ah, currCal);
 118         }
 119
 120         return iscaldone;
 121 }
 122
 123 static bool ar9003_hw_calibrate(struct ath_hw *ah,
 124                                 struct ath9k_channel *chan,
 125                                 u8 rxchainmask,
 126                                 bool longcal)
 127 {
 128         bool iscaldone = true;
 129         struct ath9k_cal_list *currCal = ah->cal_list_curr;
 130
 131         /*
 132          * For given calibration:
 133          * 1. Call generic cal routine
 134          * 2. When this cal is done (isCalDone) if we have more cals waiting
 135          *    (eg after reset), mask this to upper layers by not propagating
 136          *    isCalDone if it is set to TRUE.
 137          *    Instead, change isCalDone to FALSE and setup the waiting cal(s)
 138          *    to be run.
 139          */
 140         if (currCal &&
 141             (currCal->calState == CAL_RUNNING ||
 142              currCal->calState == CAL_WAITING)) {
 143                 iscaldone = ar9003_hw_per_calibration(ah, chan,
 144                                                       rxchainmask, currCal);
 145                 if (iscaldone) {
 146                         ah->cal_list_curr = currCal = currCal->calNext;
 147
 148                         if (currCal->calState == CAL_WAITING) {
 149                                 iscaldone = false;
 150                                 ath9k_hw_reset_calibration(ah, currCal);
 151                         }
 152                 }
 153         }
 154
 155         /*
 156          * Do NF cal only at longer intervals. Get the value from
 157          * the previous NF cal and update history buffer.
 158          */
 159         if (longcal && ath9k_hw_getnf(ah, chan)) {
 160                 /*
 161                  * Load the NF from history buffer of the current channel.
 162                  * NF is slow time-variant, so it is OK to use a historical
 163                  * value.
 164                  */
 165                 ath9k_hw_loadnf(ah, ah->curchan);
 166
 167                 /* start NF calibration, without updating BB NF register */
 168                 ath9k_hw_start_nfcal(ah, false);
 169         }
 170
 171         return iscaldone;
 172 }
 173
 174 static void ar9003_hw_iqcal_collect(struct ath_hw *ah)
 175 {
 176         int i;
 177
 178         /* Accumulate IQ cal measures for active chains */
 179         for (i = 0; i < AR5416_MAX_CHAINS; i++) {
 180                 if (ah->txchainmask & BIT(i)) {
 181                         ah->totalPowerMeasI[i] +=
 182                                 REG_READ(ah, AR_PHY_CAL_MEAS_0(i));
 183                         ah->totalPowerMeasQ[i] +=
 184                                 REG_READ(ah, AR_PHY_CAL_MEAS_1(i));
 185                         ah->totalIqCorrMeas[i] +=
 186                                 (int32_t) REG_READ(ah, AR_PHY_CAL_MEAS_2(i));
 187                         ath_dbg(ath9k_hw_common(ah), CALIBRATE,
 188                                 "%d: Chn %d pmi=0x%08x;pmq=0x%08x;iqcm=0x%08x;\n",
 189                                 ah->cal_samples, i, ah->totalPowerMeasI[i],
 190                                 ah->totalPowerMeasQ[i],
 191                                 ah->totalIqCorrMeas[i]);
 192                 }
 193         }
 194 }
 195
 196 static void ar9003_hw_iqcalibrate(struct ath_hw *ah, u8 numChains)
 197 {
 198         struct ath_common *common = ath9k_hw_common(ah);
 199         u32 powerMeasQ, powerMeasI, iqCorrMeas;
 200         u32 qCoffDenom, iCoffDenom;
 201         int32_t qCoff, iCoff;
 202         int iqCorrNeg, i;
 203         static const u_int32_t offset_array[3] = {
 204                 AR_PHY_RX_IQCAL_CORR_B0,
 205                 AR_PHY_RX_IQCAL_CORR_B1,
 206                 AR_PHY_RX_IQCAL_CORR_B2,
 207         };
 208
 209         for (i = 0; i < numChains; i++) {
 210                 powerMeasI = ah->totalPowerMeasI[i];
 211                 powerMeasQ = ah->totalPowerMeasQ[i];
 212                 iqCorrMeas = ah->totalIqCorrMeas[i];
 213
 214                 ath_dbg(common, CALIBRATE,
 215                         "Starting IQ Cal and Correction for Chain %d\n", i);
 216
 217                 ath_dbg(common, CALIBRATE,
 218                         "Original: Chn %d iq_corr_meas = 0x%08x\n",
 219                         i, ah->totalIqCorrMeas[i]);
 220
 221                 iqCorrNeg = 0;
 222
 223                 if (iqCorrMeas > 0x80000000) {
 224                         iqCorrMeas = (0xffffffff - iqCorrMeas) + 1;
 225                         iqCorrNeg = 1;
 226                 }
 227
 228                 ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_i = 0x%08x\n",
 229                         i, powerMeasI);
 230                 ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_q = 0x%08x\n",
 231                         i, powerMeasQ);
 232                 ath_dbg(common, CALIBRATE, "iqCorrNeg is 0x%08x\n", iqCorrNeg);
 233
 234                 iCoffDenom = (powerMeasI / 2 + powerMeasQ / 2) / 256;
 235                 qCoffDenom = powerMeasQ / 64;
 236
 237                 if ((iCoffDenom != 0) && (qCoffDenom != 0)) {
 238                         iCoff = iqCorrMeas / iCoffDenom;
 239                         qCoff = powerMeasI / qCoffDenom - 64;
 240                         ath_dbg(common, CALIBRATE, "Chn %d iCoff = 0x%08x\n",
 241                                 i, iCoff);
 242                         ath_dbg(common, CALIBRATE, "Chn %d qCoff = 0x%08x\n",
 243                                 i, qCoff);
 244
 245                         /* Force bounds on iCoff */
 246                         if (iCoff >= 63)
 247                                 iCoff = 63;
 248                         else if (iCoff <= -63)
 249                                 iCoff = -63;
 250
 251                         /* Negate iCoff if iqCorrNeg == 0 */
 252                         if (iqCorrNeg == 0x0)
 253                                 iCoff = -iCoff;
 254
 255                         /* Force bounds on qCoff */
 256                         if (qCoff >= 63)
 257                                 qCoff = 63;
 258                         else if (qCoff <= -63)
 259                                 qCoff = -63;
 260
 261                         iCoff = iCoff & 0x7f;
 262                         qCoff = qCoff & 0x7f;
 263
 264                         ath_dbg(common, CALIBRATE,
 265                                 "Chn %d : iCoff = 0x%x  qCoff = 0x%x\n",
 266                                 i, iCoff, qCoff);
 267                         ath_dbg(common, CALIBRATE,
 268                                 "Register offset (0x%04x) before update = 0x%x\n",
 269                                 offset_array[i],
 270                                 REG_READ(ah, offset_array[i]));
 271
 272                         if (AR_SREV_9565(ah) &&
 273                             (iCoff == 63 || qCoff == 63 ||
 274                              iCoff == -63 || qCoff == -63))
 275                                 return;
 276
 277                         REG_RMW_FIELD(ah, offset_array[i],
 278                                       AR_PHY_RX_IQCAL_CORR_IQCORR_Q_I_COFF,
 279                                       iCoff);
 280                         REG_RMW_FIELD(ah, offset_array[i],
 281                                       AR_PHY_RX_IQCAL_CORR_IQCORR_Q_Q_COFF,
 282                                       qCoff);
 283                         ath_dbg(common, CALIBRATE,
 284                                 "Register offset (0x%04x) QI COFF (bitfields 0x%08x) after update = 0x%x\n",
 285                                 offset_array[i],
 286                                 AR_PHY_RX_IQCAL_CORR_IQCORR_Q_I_COFF,
 287                                 REG_READ(ah, offset_array[i]));
 288                         ath_dbg(common, CALIBRATE,
 289                                 "Register offset (0x%04x) QQ COFF (bitfields 0x%08x) after update = 0x%x\n",
 290                                 offset_array[i],
 291                                 AR_PHY_RX_IQCAL_CORR_IQCORR_Q_Q_COFF,
 292                                 REG_READ(ah, offset_array[i]));
 293
 294                         ath_dbg(common, CALIBRATE,
 295                                 "IQ Cal and Correction done for Chain %d\n", i);
 296                 }
 297         }
 298
 299         REG_SET_BIT(ah, AR_PHY_RX_IQCAL_CORR_B0,
 300                     AR_PHY_RX_IQCAL_CORR_IQCORR_ENABLE);
 301         ath_dbg(common, CALIBRATE,
 302                 "IQ Cal and Correction (offset 0x%04x) enabled (bit position 0x%08x). New Value 0x%08x\n",
 303                 (unsigned) (AR_PHY_RX_IQCAL_CORR_B0),
 304                 AR_PHY_RX_IQCAL_CORR_IQCORR_ENABLE,
 305                 REG_READ(ah, AR_PHY_RX_IQCAL_CORR_B0));
 306 }
 307
 308 static const struct ath9k_percal_data iq_cal_single_sample = {
 309         IQ_MISMATCH_CAL,
 310         MIN_CAL_SAMPLES,
 311         PER_MAX_LOG_COUNT,
 312         ar9003_hw_iqcal_collect,
 313         ar9003_hw_iqcalibrate
 314 };
 315
 316 static void ar9003_hw_init_cal_settings(struct ath_hw *ah)
 317 {
 318         ah->iq_caldata.calData = &iq_cal_single_sample;
 319
 320         if (AR_SREV_9300_20_OR_LATER(ah)) {
 321                 ah->enabled_cals |= TX_IQ_CAL;
 322                 if (AR_SREV_9485_OR_LATER(ah) && !AR_SREV_9340(ah))
 323                         ah->enabled_cals |= TX_IQ_ON_AGC_CAL;
 324         }
 325
 326         ah->supp_cals = IQ_MISMATCH_CAL;
 327 }
 328
 329 #define OFF_UPPER_LT 24
 330 #define OFF_LOWER_LT 7
 331
 332 static bool ar9003_hw_dynamic_osdac_selection(struct ath_hw *ah,
 333                                               bool txiqcal_done)
 334 {
 335         struct ath_common *common = ath9k_hw_common(ah);
 336         int ch0_done, osdac_ch0, dc_off_ch0_i1, dc_off_ch0_q1, dc_off_ch0_i2,
 337                 dc_off_ch0_q2, dc_off_ch0_i3, dc_off_ch0_q3;
 338         int ch1_done, osdac_ch1, dc_off_ch1_i1, dc_off_ch1_q1, dc_off_ch1_i2,
 339                 dc_off_ch1_q2, dc_off_ch1_i3, dc_off_ch1_q3;
 340         int ch2_done, osdac_ch2, dc_off_ch2_i1, dc_off_ch2_q1, dc_off_ch2_i2,
 341                 dc_off_ch2_q2, dc_off_ch2_i3, dc_off_ch2_q3;
 342         bool status;
 343         u32 temp, val;
 344
 345         /*
 346          * Clear offset and IQ calibration, run AGC cal.
 347          */
 348         REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
 349                     AR_PHY_AGC_CONTROL_OFFSET_CAL);
 350         REG_CLR_BIT(ah, AR_PHY_TX_IQCAL_CONTROL_0,
 351                     AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL);
 352         REG_WRITE(ah, AR_PHY_AGC_CONTROL,
 353                   REG_READ(ah, AR_PHY_AGC_CONTROL) | AR_PHY_AGC_CONTROL_CAL);
 354
 355         status = ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL,
 356                                AR_PHY_AGC_CONTROL_CAL,
 357                                0, AH_WAIT_TIMEOUT);
 358         if (!status) {
 359                 ath_dbg(common, CALIBRATE,
 360                         "AGC cal without offset cal failed to complete in 1ms");
 361                 return false;
 362         }
 363
 364         /*
 365          * Allow only offset calibration and disable the others
 366          * (Carrier Leak calibration, TX Filter calibration and
 367          *  Peak Detector offset calibration).
 368          */
 369         REG_SET_BIT(ah, AR_PHY_AGC_CONTROL,
 370                     AR_PHY_AGC_CONTROL_OFFSET_CAL);
 371         REG_CLR_BIT(ah, AR_PHY_CL_CAL_CTL,
 372                     AR_PHY_CL_CAL_ENABLE);
 373         REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
 374                     AR_PHY_AGC_CONTROL_FLTR_CAL);
 375         REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
 376                     AR_PHY_AGC_CONTROL_PKDET_CAL);
 377
 378         ch0_done = 0;
 379         ch1_done = 0;
 380         ch2_done = 0;
 381
 382         while ((ch0_done == 0) || (ch1_done == 0) || (ch2_done == 0)) {
 383                 osdac_ch0 = (REG_READ(ah, AR_PHY_65NM_CH0_BB1) >> 30) & 0x3;
 384                 osdac_ch1 = (REG_READ(ah, AR_PHY_65NM_CH1_BB1) >> 30) & 0x3;
 385                 osdac_ch2 = (REG_READ(ah, AR_PHY_65NM_CH2_BB1) >> 30) & 0x3;
 386
 387                 REG_SET_BIT(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);
 388
 389                 REG_WRITE(ah, AR_PHY_AGC_CONTROL,
 390                           REG_READ(ah, AR_PHY_AGC_CONTROL) | AR_PHY_AGC_CONTROL_CAL);
 391
 392                 status = ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL,
 393                                        AR_PHY_AGC_CONTROL_CAL,
 394                                        0, AH_WAIT_TIMEOUT);
 395                 if (!status) {
 396                         ath_dbg(common, CALIBRATE,
 397                                 "DC offset cal failed to complete in 1ms");
 398                         return false;
 399                 }
 400
 401                 REG_CLR_BIT(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);
 402
 403                 /*
 404                  * High gain.
 405                  */
 406                 REG_WRITE(ah, AR_PHY_65NM_CH0_BB3,
 407                           ((REG_READ(ah, AR_PHY_65NM_CH0_BB3) & 0xfffffcff) | (1 << 8)));
 408                 REG_WRITE(ah, AR_PHY_65NM_CH1_BB3,
 409                           ((REG_READ(ah, AR_PHY_65NM_CH1_BB3) & 0xfffffcff) | (1 << 8)));
 410                 REG_WRITE(ah, AR_PHY_65NM_CH2_BB3,
 411                           ((REG_READ(ah, AR_PHY_65NM_CH2_BB3) & 0xfffffcff) | (1 << 8)));
 412
 413                 temp = REG_READ(ah, AR_PHY_65NM_CH0_BB3);
 414                 dc_off_ch0_i1 = (temp >> 26) & 0x1f;
 415                 dc_off_ch0_q1 = (temp >> 21) & 0x1f;
 416
 417                 temp = REG_READ(ah, AR_PHY_65NM_CH1_BB3);
 418                 dc_off_ch1_i1 = (temp >> 26) & 0x1f;
 419                 dc_off_ch1_q1 = (temp >> 21) & 0x1f;
 420
 421                 temp = REG_READ(ah, AR_PHY_65NM_CH2_BB3);
 422                 dc_off_ch2_i1 = (temp >> 26) & 0x1f;
 423                 dc_off_ch2_q1 = (temp >> 21) & 0x1f;
 424
 425                 /*
 426                  * Low gain.
 427                  */
 428                 REG_WRITE(ah, AR_PHY_65NM_CH0_BB3,
 429                           ((REG_READ(ah, AR_PHY_65NM_CH0_BB3) & 0xfffffcff) | (2 << 8)));
 430                 REG_WRITE(ah, AR_PHY_65NM_CH1_BB3,
 431                           ((REG_READ(ah, AR_PHY_65NM_CH1_BB3) & 0xfffffcff) | (2 << 8)));
 432                 REG_WRITE(ah, AR_PHY_65NM_CH2_BB3,
 433                           ((REG_READ(ah, AR_PHY_65NM_CH2_BB3) & 0xfffffcff) | (2 << 8)));
 434
 435                 temp = REG_READ(ah, AR_PHY_65NM_CH0_BB3);
 436                 dc_off_ch0_i2 = (temp >> 26) & 0x1f;
 437                 dc_off_ch0_q2 = (temp >> 21) & 0x1f;
 438
 439                 temp = REG_READ(ah, AR_PHY_65NM_CH1_BB3);
 440                 dc_off_ch1_i2 = (temp >> 26) & 0x1f;
 441                 dc_off_ch1_q2 = (temp >> 21) & 0x1f;
 442
 443                 temp = REG_READ(ah, AR_PHY_65NM_CH2_BB3);
 444                 dc_off_ch2_i2 = (temp >> 26) & 0x1f;
 445                 dc_off_ch2_q2 = (temp >> 21) & 0x1f;
 446
 447                 /*
 448                  * Loopback.
 449                  */
 450                 REG_WRITE(ah, AR_PHY_65NM_CH0_BB3,
 451                           ((REG_READ(ah, AR_PHY_65NM_CH0_BB3) & 0xfffffcff) | (3 << 8)));
 452                 REG_WRITE(ah, AR_PHY_65NM_CH1_BB3,
 453                           ((REG_READ(ah, AR_PHY_65NM_CH1_BB3) & 0xfffffcff) | (3 << 8)));
 454                 REG_WRITE(ah, AR_PHY_65NM_CH2_BB3,
 455                           ((REG_READ(ah, AR_PHY_65NM_CH2_BB3) & 0xfffffcff) | (3 << 8)));
 456
 457                 temp = REG_READ(ah, AR_PHY_65NM_CH0_BB3);
 458                 dc_off_ch0_i3 = (temp >> 26) & 0x1f;
 459                 dc_off_ch0_q3 = (temp >> 21) & 0x1f;
 460
 461                 temp = REG_READ(ah, AR_PHY_65NM_CH1_BB3);
 462                 dc_off_ch1_i3 = (temp >> 26) & 0x1f;
 463                 dc_off_ch1_q3 = (temp >> 21) & 0x1f;
 464
 465                 temp = REG_READ(ah, AR_PHY_65NM_CH2_BB3);
 466                 dc_off_ch2_i3 = (temp >> 26) & 0x1f;
 467                 dc_off_ch2_q3 = (temp >> 21) & 0x1f;
 468
 469                 if ((dc_off_ch0_i1 > OFF_UPPER_LT) || (dc_off_ch0_i1 < OFF_LOWER_LT) ||
 470                     (dc_off_ch0_i2 > OFF_UPPER_LT) || (dc_off_ch0_i2 < OFF_LOWER_LT) ||
 471                     (dc_off_ch0_i3 > OFF_UPPER_LT) || (dc_off_ch0_i3 < OFF_LOWER_LT) ||
 472                     (dc_off_ch0_q1 > OFF_UPPER_LT) || (dc_off_ch0_q1 < OFF_LOWER_LT) ||
 473                     (dc_off_ch0_q2 > OFF_UPPER_LT) || (dc_off_ch0_q2 < OFF_LOWER_LT) ||
 474                     (dc_off_ch0_q3 > OFF_UPPER_LT) || (dc_off_ch0_q3 < OFF_LOWER_LT)) {
 475                         if (osdac_ch0 == 3) {
 476                                 ch0_done = 1;
 477                         } else {
 478                                 osdac_ch0++;
 479
 480                                 val = REG_READ(ah, AR_PHY_65NM_CH0_BB1) & 0x3fffffff;
 481                                 val |= (osdac_ch0 << 30);
 482                                 REG_WRITE(ah, AR_PHY_65NM_CH0_BB1, val);
 483
 484                                 ch0_done = 0;
 485                         }
 486                 } else {
 487                         ch0_done = 1;
 488                 }
 489
 490                 if ((dc_off_ch1_i1 > OFF_UPPER_LT) || (dc_off_ch1_i1 < OFF_LOWER_LT) ||
 491                     (dc_off_ch1_i2 > OFF_UPPER_LT) || (dc_off_ch1_i2 < OFF_LOWER_LT) ||
 492                     (dc_off_ch1_i3 > OFF_UPPER_LT) || (dc_off_ch1_i3 < OFF_LOWER_LT) ||
 493                     (dc_off_ch1_q1 > OFF_UPPER_LT) || (dc_off_ch1_q1 < OFF_LOWER_LT) ||
 494                     (dc_off_ch1_q2 > OFF_UPPER_LT) || (dc_off_ch1_q2 < OFF_LOWER_LT) ||
 495                     (dc_off_ch1_q3 > OFF_UPPER_LT) || (dc_off_ch1_q3 < OFF_LOWER_LT)) {
 496                         if (osdac_ch1 == 3) {
 497                                 ch1_done = 1;
 498                         } else {
 499                                 osdac_ch1++;
 500
 501                                 val = REG_READ(ah, AR_PHY_65NM_CH1_BB1) & 0x3fffffff;
 502                                 val |= (osdac_ch1 << 30);
 503                                 REG_WRITE(ah, AR_PHY_65NM_CH1_BB1, val);
 504
 505                                 ch1_done = 0;
 506                         }
 507                 } else {
 508                         ch1_done = 1;
 509                 }
 510
 511                 if ((dc_off_ch2_i1 > OFF_UPPER_LT) || (dc_off_ch2_i1 < OFF_LOWER_LT) ||
 512                     (dc_off_ch2_i2 > OFF_UPPER_LT) || (dc_off_ch2_i2 < OFF_LOWER_LT) ||
 513                     (dc_off_ch2_i3 > OFF_UPPER_LT) || (dc_off_ch2_i3 < OFF_LOWER_LT) ||
 514                     (dc_off_ch2_q1 > OFF_UPPER_LT) || (dc_off_ch2_q1 < OFF_LOWER_LT) ||
 515                     (dc_off_ch2_q2 > OFF_UPPER_LT) || (dc_off_ch2_q2 < OFF_LOWER_LT) ||
 516                     (dc_off_ch2_q3 > OFF_UPPER_LT) || (dc_off_ch2_q3 < OFF_LOWER_LT)) {
 517                         if (osdac_ch2 == 3) {
 518                                 ch2_done = 1;
 519                         } else {
 520                                 osdac_ch2++;
 521
 522                                 val = REG_READ(ah, AR_PHY_65NM_CH2_BB1) & 0x3fffffff;
 523                                 val |= (osdac_ch2 << 30);
 524                                 REG_WRITE(ah, AR_PHY_65NM_CH2_BB1, val);
 525
 526                                 ch2_done = 0;
 527                         }
 528                 } else {
 529                         ch2_done = 1;
 530                 }
 531         }
 532
 533         REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
 534                     AR_PHY_AGC_CONTROL_OFFSET_CAL);
 535         REG_SET_BIT(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);
 536
 537         /*
 538          * We don't need to check txiqcal_done here since it is always
 539          * set for AR9550.
 540          */
 541         REG_SET_BIT(ah, AR_PHY_TX_IQCAL_CONTROL_0,
 542                     AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL);
 543
 544         return true;
 545 }
 546
 547 /*
 548  * solve 4x4 linear equation used in loopback iq cal.
 549  */
 550 static bool ar9003_hw_solve_iq_cal(struct ath_hw *ah,
 551                                    s32 sin_2phi_1,
 552                                    s32 cos_2phi_1,
 553                                    s32 sin_2phi_2,
 554                                    s32 cos_2phi_2,
 555                                    s32 mag_a0_d0,
 556                                    s32 phs_a0_d0,
 557                                    s32 mag_a1_d0,
 558                                    s32 phs_a1_d0,
 559                                    s32 solved_eq[])
 560 {
 561         s32 f1 = cos_2phi_1 - cos_2phi_2,
 562             f3 = sin_2phi_1 - sin_2phi_2,
 563             f2;
 564         s32 mag_tx, phs_tx, mag_rx, phs_rx;
 565         const s32 result_shift = 1 << 15;
 566         struct ath_common *common = ath9k_hw_common(ah);
 567
 568         f2 = ((f1 >> 3) * (f1 >> 3) + (f3 >> 3) * (f3 >> 3)) >> 9;
 569
 570         if (!f2) {
 571                 ath_dbg(common, CALIBRATE, "Divide by 0\n");
 572                 return false;
 573         }
 574
 575         /* mag mismatch, tx */
 576         mag_tx = f1 * (mag_a0_d0  - mag_a1_d0) + f3 * (phs_a0_d0 - phs_a1_d0);
 577         /* phs mismatch, tx */
 578         phs_tx = f3 * (-mag_a0_d0 + mag_a1_d0) + f1 * (phs_a0_d0 - phs_a1_d0);
 579
 580         mag_tx = (mag_tx / f2);
 581         phs_tx = (phs_tx / f2);
 582
 583         /* mag mismatch, rx */
 584         mag_rx = mag_a0_d0 - (cos_2phi_1 * mag_tx + sin_2phi_1 * phs_tx) /
 585                  result_shift;
 586         /* phs mismatch, rx */
 587         phs_rx = phs_a0_d0 + (sin_2phi_1 * mag_tx - cos_2phi_1 * phs_tx) /
 588                  result_shift;
 589
 590         solved_eq[0] = mag_tx;
 591         solved_eq[1] = phs_tx;
 592         solved_eq[2] = mag_rx;
 593         solved_eq[3] = phs_rx;
 594
 595         return true;
 596 }
 597
 598 static s32 ar9003_hw_find_mag_approx(struct ath_hw *ah, s32 in_re, s32 in_im)
 599 {
 600         s32 abs_i = abs(in_re),
 601             abs_q = abs(in_im),
 602             max_abs, min_abs;
 603
 604         if (abs_i > abs_q) {
 605                 max_abs = abs_i;
 606                 min_abs = abs_q;
 607         } else {
 608                 max_abs = abs_q;
 609                 min_abs = abs_i;
 610         }
 611
 612         return max_abs - (max_abs / 32) + (min_abs / 8) + (min_abs / 4);
 613 }
 614
 615 #define DELPT 32
 616
 617 static bool ar9003_hw_calc_iq_corr(struct ath_hw *ah,
 618                                    s32 chain_idx,
 619                                    const s32 iq_res[],
 620                                    s32 iqc_coeff[])
 621 {
 622         s32 i2_m_q2_a0_d0, i2_p_q2_a0_d0, iq_corr_a0_d0,
 623             i2_m_q2_a0_d1, i2_p_q2_a0_d1, iq_corr_a0_d1,
 624             i2_m_q2_a1_d0, i2_p_q2_a1_d0, iq_corr_a1_d0,
 625             i2_m_q2_a1_d1, i2_p_q2_a1_d1, iq_corr_a1_d1;
 626         s32 mag_a0_d0, mag_a1_d0, mag_a0_d1, mag_a1_d1,
 627             phs_a0_d0, phs_a1_d0, phs_a0_d1, phs_a1_d1,
 628             sin_2phi_1, cos_2phi_1,
 629             sin_2phi_2, cos_2phi_2;
 630         s32 mag_tx, phs_tx, mag_rx, phs_rx;
 631         s32 solved_eq[4], mag_corr_tx, phs_corr_tx, mag_corr_rx, phs_corr_rx,
 632             q_q_coff, q_i_coff;
 633         const s32 res_scale = 1 << 15;
 634         const s32 delpt_shift = 1 << 8;
 635         s32 mag1, mag2;
 636         struct ath_common *common = ath9k_hw_common(ah);
 637
 638         i2_m_q2_a0_d0 = iq_res[0] & 0xfff;
 639         i2_p_q2_a0_d0 = (iq_res[0] >> 12) & 0xfff;
 640         iq_corr_a0_d0 = ((iq_res[0] >> 24) & 0xff) + ((iq_res[1] & 0xf) << 8);
 641
 642         if (i2_m_q2_a0_d0 > 0x800)
 643                 i2_m_q2_a0_d0 = -((0xfff - i2_m_q2_a0_d0) + 1);
 644
 645         if (i2_p_q2_a0_d0 > 0x800)
 646                 i2_p_q2_a0_d0 = -((0xfff - i2_p_q2_a0_d0) + 1);
 647
 648         if (iq_corr_a0_d0 > 0x800)
 649                 iq_corr_a0_d0 = -((0xfff - iq_corr_a0_d0) + 1);
 650
 651         i2_m_q2_a0_d1 = (iq_res[1] >> 4) & 0xfff;
 652         i2_p_q2_a0_d1 = (iq_res[2] & 0xfff);
 653         iq_corr_a0_d1 = (iq_res[2] >> 12) & 0xfff;
 654
 655         if (i2_m_q2_a0_d1 > 0x800)
 656                 i2_m_q2_a0_d1 = -((0xfff - i2_m_q2_a0_d1) + 1);
 657
 658         if (iq_corr_a0_d1 > 0x800)
 659                 iq_corr_a0_d1 = -((0xfff - iq_corr_a0_d1) + 1);
 660
 661         i2_m_q2_a1_d0 = ((iq_res[2] >> 24) & 0xff) + ((iq_res[3] & 0xf) << 8);
 662         i2_p_q2_a1_d0 = (iq_res[3] >> 4) & 0xfff;
 663         iq_corr_a1_d0 = iq_res[4] & 0xfff;
 664
 665         if (i2_m_q2_a1_d0 > 0x800)
 666                 i2_m_q2_a1_d0 = -((0xfff - i2_m_q2_a1_d0) + 1);
 667
 668         if (i2_p_q2_a1_d0 > 0x800)
 669                 i2_p_q2_a1_d0 = -((0xfff - i2_p_q2_a1_d0) + 1);
 670
 671         if (iq_corr_a1_d0 > 0x800)
 672                 iq_corr_a1_d0 = -((0xfff - iq_corr_a1_d0) + 1);
 673
 674         i2_m_q2_a1_d1 = (iq_res[4] >> 12) & 0xfff;
 675         i2_p_q2_a1_d1 = ((iq_res[4] >> 24) & 0xff) + ((iq_res[5] & 0xf) << 8);
 676         iq_corr_a1_d1 = (iq_res[5] >> 4) & 0xfff;
 677
 678         if (i2_m_q2_a1_d1 > 0x800)
 679                 i2_m_q2_a1_d1 = -((0xfff - i2_m_q2_a1_d1) + 1);
 680
 681         if (i2_p_q2_a1_d1 > 0x800)
 682                 i2_p_q2_a1_d1 = -((0xfff - i2_p_q2_a1_d1) + 1);
 683
 684         if (iq_corr_a1_d1 > 0x800)
 685                 iq_corr_a1_d1 = -((0xfff - iq_corr_a1_d1) + 1);
 686
 687         if ((i2_p_q2_a0_d0 == 0) || (i2_p_q2_a0_d1 == 0) ||
 688             (i2_p_q2_a1_d0 == 0) || (i2_p_q2_a1_d1 == 0)) {
 689                 ath_dbg(common, CALIBRATE,
 690                         "Divide by 0:\n"
 691                         "a0_d0=%d\n"
 692                         "a0_d1=%d\n"
 693                         "a2_d0=%d\n"
 694                         "a1_d1=%d\n",
 695                         i2_p_q2_a0_d0, i2_p_q2_a0_d1,
 696                         i2_p_q2_a1_d0, i2_p_q2_a1_d1);
 697                 return false;
 698         }
 699
 700         if ((i2_p_q2_a0_d0 < 1024) || (i2_p_q2_a0_d0 > 2047) ||
 701             (i2_p_q2_a1_d0 < 0) || (i2_p_q2_a1_d1 < 0) ||
 702             (i2_p_q2_a0_d0 <= i2_m_q2_a0_d0) ||
 703             (i2_p_q2_a0_d0 <= iq_corr_a0_d0) ||
 704             (i2_p_q2_a0_d1 <= i2_m_q2_a0_d1) ||
 705             (i2_p_q2_a0_d1 <= iq_corr_a0_d1) ||
 706             (i2_p_q2_a1_d0 <= i2_m_q2_a1_d0) ||
 707             (i2_p_q2_a1_d0 <= iq_corr_a1_d0) ||
 708             (i2_p_q2_a1_d1 <= i2_m_q2_a1_d1) ||
 709             (i2_p_q2_a1_d1 <= iq_corr_a1_d1)) {
 710                 return false;
 711         }
 712
 713         mag_a0_d0 = (i2_m_q2_a0_d0 * res_scale) / i2_p_q2_a0_d0;
 714         phs_a0_d0 = (iq_corr_a0_d0 * res_scale) / i2_p_q2_a0_d0;
 715
 716         mag_a0_d1 = (i2_m_q2_a0_d1 * res_scale) / i2_p_q2_a0_d1;
 717         phs_a0_d1 = (iq_corr_a0_d1 * res_scale) / i2_p_q2_a0_d1;
 718
 719         mag_a1_d0 = (i2_m_q2_a1_d0 * res_scale) / i2_p_q2_a1_d0;
 720         phs_a1_d0 = (iq_corr_a1_d0 * res_scale) / i2_p_q2_a1_d0;
 721
 722         mag_a1_d1 = (i2_m_q2_a1_d1 * res_scale) / i2_p_q2_a1_d1;
 723         phs_a1_d1 = (iq_corr_a1_d1 * res_scale) / i2_p_q2_a1_d1;
 724
 725         /* w/o analog phase shift */
 726         sin_2phi_1 = (((mag_a0_d0 - mag_a0_d1) * delpt_shift) / DELPT);
 727         /* w/o analog phase shift */
 728         cos_2phi_1 = (((phs_a0_d1 - phs_a0_d0) * delpt_shift) / DELPT);
 729         /* w/  analog phase shift */
 730         sin_2phi_2 = (((mag_a1_d0 - mag_a1_d1) * delpt_shift) / DELPT);
 731         /* w/  analog phase shift */
 732         cos_2phi_2 = (((phs_a1_d1 - phs_a1_d0) * delpt_shift) / DELPT);
 733
 734         /*
 735          * force sin^2 + cos^2 = 1;
 736          * find magnitude by approximation
 737          */
 738         mag1 = ar9003_hw_find_mag_approx(ah, cos_2phi_1, sin_2phi_1);
 739         mag2 = ar9003_hw_find_mag_approx(ah, cos_2phi_2, sin_2phi_2);
 740
 741         if ((mag1 == 0) || (mag2 == 0)) {
 742                 ath_dbg(common, CALIBRATE, "Divide by 0: mag1=%d, mag2=%d\n",
 743                         mag1, mag2);
 744                 return false;
 745         }
 746
 747         /* normalization sin and cos by mag */
 748         sin_2phi_1 = (sin_2phi_1 * res_scale / mag1);
 749         cos_2phi_1 = (cos_2phi_1 * res_scale / mag1);
 750         sin_2phi_2 = (sin_2phi_2 * res_scale / mag2);
 751         cos_2phi_2 = (cos_2phi_2 * res_scale / mag2);
 752
 753         /* calculate IQ mismatch */
 754         if (!ar9003_hw_solve_iq_cal(ah,
 755                              sin_2phi_1, cos_2phi_1,
 756                              sin_2phi_2, cos_2phi_2,
 757                              mag_a0_d0, phs_a0_d0,
 758                              mag_a1_d0,
 759                              phs_a1_d0, solved_eq)) {
 760                 ath_dbg(common, CALIBRATE,
 761                         "Call to ar9003_hw_solve_iq_cal() failed\n");
 762                 return false;
 763         }
 764
 765         mag_tx = solved_eq[0];
 766         phs_tx = solved_eq[1];
 767         mag_rx = solved_eq[2];
 768         phs_rx = solved_eq[3];
 769
 770         ath_dbg(common, CALIBRATE,
 771                 "chain %d: mag mismatch=%d phase mismatch=%d\n",
 772                 chain_idx, mag_tx/res_scale, phs_tx/res_scale);
 773
 774         if (res_scale == mag_tx) {
 775                 ath_dbg(common, CALIBRATE,
 776                         "Divide by 0: mag_tx=%d, res_scale=%d\n",
 777                         mag_tx, res_scale);
 778                 return false;
 779         }
 780
 781         /* calculate and quantize Tx IQ correction factor */
 782         mag_corr_tx = (mag_tx * res_scale) / (res_scale - mag_tx);
 783         phs_corr_tx = -phs_tx;
 784
 785         q_q_coff = (mag_corr_tx * 128 / res_scale);
 786         q_i_coff = (phs_corr_tx * 256 / res_scale);
 787
 788         ath_dbg(common, CALIBRATE, "tx chain %d: mag corr=%d  phase corr=%d\n",
 789                 chain_idx, q_q_coff, q_i_coff);
 790
 791         if (q_i_coff < -63)
 792                 q_i_coff = -63;
 793         if (q_i_coff > 63)
 794                 q_i_coff = 63;
 795         if (q_q_coff < -63)
 796                 q_q_coff = -63;
 797         if (q_q_coff > 63)
 798                 q_q_coff = 63;
 799
 800         iqc_coeff[0] = (q_q_coff * 128) + q_i_coff;
 801
 802         ath_dbg(common, CALIBRATE, "tx chain %d: iq corr coeff=%x\n",
 803                 chain_idx, iqc_coeff[0]);
 804
 805         if (-mag_rx == res_scale) {
 806                 ath_dbg(common, CALIBRATE,
 807                         "Divide by 0: mag_rx=%d, res_scale=%d\n",
 808                         mag_rx, res_scale);
 809                 return false;
 810         }
 811
 812         /* calculate and quantize Rx IQ correction factors */
 813         mag_corr_rx = (-mag_rx * res_scale) / (res_scale + mag_rx);
 814         phs_corr_rx = -phs_rx;
 815
 816         q_q_coff = (mag_corr_rx * 128 / res_scale);
 817         q_i_coff = (phs_corr_rx * 256 / res_scale);
 818
 819         ath_dbg(common, CALIBRATE, "rx chain %d: mag corr=%d  phase corr=%d\n",
 820                 chain_idx, q_q_coff, q_i_coff);
 821
 822         if (q_i_coff < -63)
 823                 q_i_coff = -63;
 824         if (q_i_coff > 63)
 825                 q_i_coff = 63;
 826         if (q_q_coff < -63)
 827                 q_q_coff = -63;
 828         if (q_q_coff > 63)
 829                 q_q_coff = 63;
 830
 831         iqc_coeff[1] = (q_q_coff * 128) + q_i_coff;
 832
 833         ath_dbg(common, CALIBRATE, "rx chain %d: iq corr coeff=%x\n",
 834                 chain_idx, iqc_coeff[1]);
 835
 836         return true;
 837 }
 838
 839 static void ar9003_hw_detect_outlier(int *mp_coeff, int nmeasurement,
 840                                      int max_delta)
 841 {
 842         int mp_max = -64, max_idx = 0;
 843         int mp_min = 63, min_idx = 0;
 844         int mp_avg = 0, i, outlier_idx = 0, mp_count = 0;
 845
 846         /* find min/max mismatch across all calibrated gains */
 847         for (i = 0; i < nmeasurement; i++) {
 848                 if (mp_coeff[i] > mp_max) {
 849                         mp_max = mp_coeff[i];
 850                         max_idx = i;
 851                 } else if (mp_coeff[i] < mp_min) {
 852                         mp_min = mp_coeff[i];
 853                         min_idx = i;
 854                 }
 855         }
 856
 857         /* find average (exclude max abs value) */
 858         for (i = 0; i < nmeasurement; i++) {
 859                 if ((abs(mp_coeff[i]) < abs(mp_max)) ||
 860                     (abs(mp_coeff[i]) < abs(mp_min))) {
 861                         mp_avg += mp_coeff[i];
 862                         mp_count++;
 863                 }
 864         }
 865
 866         /*
 867          * finding mean magnitude/phase if possible, otherwise
 868          * just use the last value as the mean
 869          */
 870         if (mp_count)
 871                 mp_avg /= mp_count;
 872         else
 873                 mp_avg = mp_coeff[nmeasurement - 1];
 874
 875         /* detect outlier */
 876         if (abs(mp_max - mp_min) > max_delta) {
 877                 if (abs(mp_max - mp_avg) > abs(mp_min - mp_avg))
 878                         outlier_idx = max_idx;
 879                 else
 880                         outlier_idx = min_idx;
 881
 882                 mp_coeff[outlier_idx] = mp_avg;
 883         }
 884 }
 885
 886 static void ar9003_hw_tx_iq_cal_outlier_detection(struct ath_hw *ah,
 887                                                   struct coeff *coeff,
 888                                                   bool is_reusable)
 889 {
 890         int i, im, nmeasurement;
 891         u32 tx_corr_coeff[MAX_MEASUREMENT][AR9300_MAX_CHAINS];
 892         struct ath9k_hw_cal_data *caldata = ah->caldata;
 893
 894         memset(tx_corr_coeff, 0, sizeof(tx_corr_coeff));
 895         for (i = 0; i < MAX_MEASUREMENT / 2; i++) {
 896                 tx_corr_coeff[i * 2][0] = tx_corr_coeff[(i * 2) + 1][0] =
 897                                         AR_PHY_TX_IQCAL_CORR_COEFF_B0(i);
 898                 if (!AR_SREV_9485(ah)) {
 899                         tx_corr_coeff[i * 2][1] =
 900                         tx_corr_coeff[(i * 2) + 1][1] =
 901                                         AR_PHY_TX_IQCAL_CORR_COEFF_B1(i);
 902
 903                         tx_corr_coeff[i * 2][2] =
 904                         tx_corr_coeff[(i * 2) + 1][2] =
 905                                         AR_PHY_TX_IQCAL_CORR_COEFF_B2(i);
 906                 }
 907         }
 908
 909         /* Load the average of 2 passes */
 910         for (i = 0; i < AR9300_MAX_CHAINS; i++) {
 911                 if (!(ah->txchainmask & (1 << i)))
 912                         continue;
 913                 nmeasurement = REG_READ_FIELD(ah,
 914                                 AR_PHY_TX_IQCAL_STATUS_B0,
 915                                 AR_PHY_CALIBRATED_GAINS_0);
 916
 917                 if (nmeasurement > MAX_MEASUREMENT)
 918                         nmeasurement = MAX_MEASUREMENT;
 919
 920                 /* detect outlier only if nmeasurement > 1 */
 921                 if (nmeasurement > 1) {
 922                         /* Detect magnitude outlier */
 923                         ar9003_hw_detect_outlier(coeff->mag_coeff[i],
 924                                         nmeasurement, MAX_MAG_DELTA);
 925
 926                         /* Detect phase outlier */
 927                         ar9003_hw_detect_outlier(coeff->phs_coeff[i],
 928                                         nmeasurement, MAX_PHS_DELTA);
 929                 }
 930
 931                 for (im = 0; im < nmeasurement; im++) {
 932
 933                         coeff->iqc_coeff[0] = (coeff->mag_coeff[i][im] & 0x7f) |
 934                                 ((coeff->phs_coeff[i][im] & 0x7f) << 7);
 935
 936                         if ((im % 2) == 0)
 937                                 REG_RMW_FIELD(ah, tx_corr_coeff[im][i],
 938                                         AR_PHY_TX_IQCAL_CORR_COEFF_00_COEFF_TABLE,
 939                                         coeff->iqc_coeff[0]);
 940                         else
 941                                 REG_RMW_FIELD(ah, tx_corr_coeff[im][i],
 942                                         AR_PHY_TX_IQCAL_CORR_COEFF_01_COEFF_TABLE,
 943                                         coeff->iqc_coeff[0]);
 944
 945                         if (caldata)
 946                                 caldata->tx_corr_coeff[im][i] =
 947                                         coeff->iqc_coeff[0];
 948                 }
 949                 if (caldata)
 950                         caldata->num_measures[i] = nmeasurement;
 951         }
 952
 953         REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_3,
 954                       AR_PHY_TX_IQCAL_CONTROL_3_IQCORR_EN, 0x1);
 955         REG_RMW_FIELD(ah, AR_PHY_RX_IQCAL_CORR_B0,
 956                       AR_PHY_RX_IQCAL_CORR_B0_LOOPBACK_IQCORR_EN, 0x1);
 957
 958         if (caldata) {
 959                 if (is_reusable)
 960                         set_bit(TXIQCAL_DONE, &caldata->cal_flags);
 961                 else
 962                         clear_bit(TXIQCAL_DONE, &caldata->cal_flags);
 963         }
 964
 965         return;
 966 }
 967
 968 static bool ar9003_hw_tx_iq_cal_run(struct ath_hw *ah)
 969 {
 970         struct ath_common *common = ath9k_hw_common(ah);
 971         u8 tx_gain_forced;
 972
 973         tx_gain_forced = REG_READ_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
 974                                         AR_PHY_TXGAIN_FORCE);
 975         if (tx_gain_forced)
 976                 REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
 977                               AR_PHY_TXGAIN_FORCE, 0);
 978
 979         REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_START,
 980                       AR_PHY_TX_IQCAL_START_DO_CAL, 1);
 981
 982         if (!ath9k_hw_wait(ah, AR_PHY_TX_IQCAL_START,
 983                         AR_PHY_TX_IQCAL_START_DO_CAL, 0,
 984                         AH_WAIT_TIMEOUT)) {
 985                 ath_dbg(common, CALIBRATE, "Tx IQ Cal is not completed\n");
 986                 return false;
 987         }
 988         return true;
 989 }
 990
 991 static void ar9003_hw_tx_iq_cal_post_proc(struct ath_hw *ah, bool is_reusable)
 992 {
 993         struct ath_common *common = ath9k_hw_common(ah);
 994         const u32 txiqcal_status[AR9300_MAX_CHAINS] = {
 995                 AR_PHY_TX_IQCAL_STATUS_B0,
 996                 AR_PHY_TX_IQCAL_STATUS_B1,
 997                 AR_PHY_TX_IQCAL_STATUS_B2,
 998         };
 999         const u_int32_t chan_info_tab[] = {
1000                 AR_PHY_CHAN_INFO_TAB_0,
1001                 AR_PHY_CHAN_INFO_TAB_1,
1002                 AR_PHY_CHAN_INFO_TAB_2,
1003         };
1004         struct coeff coeff;
1005         s32 iq_res[6];
1006         int i, im, j;
1007         int nmeasurement;
1008
1009         for (i = 0; i < AR9300_MAX_CHAINS; i++) {
1010                 if (!(ah->txchainmask & (1 << i)))
1011                         continue;
1012
1013                 nmeasurement = REG_READ_FIELD(ah,
1014                                 AR_PHY_TX_IQCAL_STATUS_B0,
1015                                 AR_PHY_CALIBRATED_GAINS_0);
1016                 if (nmeasurement > MAX_MEASUREMENT)
1017                         nmeasurement = MAX_MEASUREMENT;
1018
1019                 for (im = 0; im < nmeasurement; im++) {
1020                         ath_dbg(common, CALIBRATE,
1021                                 "Doing Tx IQ Cal for chain %d\n", i);
1022
1023                         if (REG_READ(ah, txiqcal_status[i]) &
1024                                         AR_PHY_TX_IQCAL_STATUS_FAILED) {
1025                                 ath_dbg(common, CALIBRATE,
1026                                         "Tx IQ Cal failed for chain %d\n", i);
1027                                 goto tx_iqcal_fail;
1028                         }
1029
1030                         for (j = 0; j < 3; j++) {
1031                                 u32 idx = 2 * j, offset = 4 * (3 * im + j);
1032
1033                                 REG_RMW_FIELD(ah,
1034                                                 AR_PHY_CHAN_INFO_MEMORY,
1035                                                 AR_PHY_CHAN_INFO_TAB_S2_READ,
1036                                                 0);
1037
1038                                 /* 32 bits */
1039                                 iq_res[idx] = REG_READ(ah,
1040                                                 chan_info_tab[i] +
1041                                                 offset);
1042
1043                                 REG_RMW_FIELD(ah,
1044                                                 AR_PHY_CHAN_INFO_MEMORY,
1045                                                 AR_PHY_CHAN_INFO_TAB_S2_READ,
1046                                                 1);
1047
1048                                 /* 16 bits */
1049                                 iq_res[idx + 1] = 0xffff & REG_READ(ah,
1050                                                 chan_info_tab[i] + offset);
1051
1052                                 ath_dbg(common, CALIBRATE,
1053                                         "IQ_RES[%d]=0x%x IQ_RES[%d]=0x%x\n",
1054                                         idx, iq_res[idx], idx + 1,
1055                                         iq_res[idx + 1]);
1056                         }
1057
1058                         if (!ar9003_hw_calc_iq_corr(ah, i, iq_res,
1059                                                 coeff.iqc_coeff)) {
1060                                 ath_dbg(common, CALIBRATE,
1061                                         "Failed in calculation of IQ correction\n");
1062                                 goto tx_iqcal_fail;
1063                         }
1064
1065                         coeff.mag_coeff[i][im] = coeff.iqc_coeff[0] & 0x7f;
1066                         coeff.phs_coeff[i][im] =
1067                                 (coeff.iqc_coeff[0] >> 7) & 0x7f;
1068
1069                         if (coeff.mag_coeff[i][im] > 63)
1070                                 coeff.mag_coeff[i][im] -= 128;
1071                         if (coeff.phs_coeff[i][im] > 63)
1072                                 coeff.phs_coeff[i][im] -= 128;
1073                 }
1074         }
1075         ar9003_hw_tx_iq_cal_outlier_detection(ah, &coeff, is_reusable);
1076
1077         return;
1078
1079 tx_iqcal_fail:
1080         ath_dbg(common, CALIBRATE, "Tx IQ Cal failed\n");
1081         return;
1082 }
1083
1084 static void ar9003_hw_tx_iq_cal_reload(struct ath_hw *ah)
1085 {
1086         struct ath9k_hw_cal_data *caldata = ah->caldata;
1087         u32 tx_corr_coeff[MAX_MEASUREMENT][AR9300_MAX_CHAINS];
1088         int i, im;
1089
1090         memset(tx_corr_coeff, 0, sizeof(tx_corr_coeff));
1091         for (i = 0; i < MAX_MEASUREMENT / 2; i++) {
1092                 tx_corr_coeff[i * 2][0] = tx_corr_coeff[(i * 2) + 1][0] =
1093                                         AR_PHY_TX_IQCAL_CORR_COEFF_B0(i);
1094                 if (!AR_SREV_9485(ah)) {
1095                         tx_corr_coeff[i * 2][1] =
1096                         tx_corr_coeff[(i * 2) + 1][1] =
1097                                         AR_PHY_TX_IQCAL_CORR_COEFF_B1(i);
1098
1099                         tx_corr_coeff[i * 2][2] =
1100                         tx_corr_coeff[(i * 2) + 1][2] =
1101                                         AR_PHY_TX_IQCAL_CORR_COEFF_B2(i);
1102                 }
1103         }
1104
1105         for (i = 0; i < AR9300_MAX_CHAINS; i++) {
1106                 if (!(ah->txchainmask & (1 << i)))
1107                         continue;
1108
1109                 for (im = 0; im < caldata->num_measures[i]; im++) {
1110                         if ((im % 2) == 0)
1111                                 REG_RMW_FIELD(ah, tx_corr_coeff[im][i],
1112                                      AR_PHY_TX_IQCAL_CORR_COEFF_00_COEFF_TABLE,
1113                                      caldata->tx_corr_coeff[im][i]);
1114                         else
1115                                 REG_RMW_FIELD(ah, tx_corr_coeff[im][i],
1116                                      AR_PHY_TX_IQCAL_CORR_COEFF_01_COEFF_TABLE,
1117                                      caldata->tx_corr_coeff[im][i]);
1118                 }
1119         }
1120
1121         REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_3,
1122                       AR_PHY_TX_IQCAL_CONTROL_3_IQCORR_EN, 0x1);
1123         REG_RMW_FIELD(ah, AR_PHY_RX_IQCAL_CORR_B0,
1124                       AR_PHY_RX_IQCAL_CORR_B0_LOOPBACK_IQCORR_EN, 0x1);
1125 }
1126
1127 static void ar9003_hw_manual_peak_cal(struct ath_hw *ah, u8 chain, bool is_2g)
1128 {
1129         int offset[8] = {0}, total = 0, test;
1130         int agc_out, i;
1131
1132         REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_GAINSTAGES(chain),
1133                       AR_PHY_65NM_RXRF_GAINSTAGES_RX_OVERRIDE, 0x1);
1134         REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_GAINSTAGES(chain),
1135                       AR_PHY_65NM_RXRF_GAINSTAGES_LNAON_CALDC, 0x0);
1136         if (is_2g)
1137                 REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_GAINSTAGES(chain),
1138                               AR_PHY_65NM_RXRF_GAINSTAGES_LNA2G_GAIN_OVR, 0x0);
1139         else
1140                 REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_GAINSTAGES(chain),
1141                               AR_PHY_65NM_RXRF_GAINSTAGES_LNA5G_GAIN_OVR, 0x0);
1142
1143         REG_RMW_FIELD(ah, AR_PHY_65NM_RXTX2(chain),
1144                       AR_PHY_65NM_RXTX2_RXON_OVR, 0x1);
1145         REG_RMW_FIELD(ah, AR_PHY_65NM_RXTX2(chain),
1146                       AR_PHY_65NM_RXTX2_RXON, 0x0);
1147
1148         REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1149                       AR_PHY_65NM_RXRF_AGC_AGC_OVERRIDE, 0x1);
1150         REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1151                       AR_PHY_65NM_RXRF_AGC_AGC_ON_OVR, 0x1);
1152         REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1153                       AR_PHY_65NM_RXRF_AGC_AGC_CAL_OVR, 0x1);
1154
1155         if (AR_SREV_9330_11(ah)) {
1156                 REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1157                               AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR, 0x0);
1158         } else {
1159                 if (is_2g)
1160                         REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1161                                       AR_PHY_65NM_RXRF_AGC_AGC2G_DBDAC_OVR, 0x0);
1162                 else
1163                         REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1164                                       AR_PHY_65NM_RXRF_AGC_AGC5G_DBDAC_OVR, 0x0);
1165         }
1166
1167         for (i = 6; i > 0; i--) {
1168                 offset[i] = BIT(i - 1);
1169                 test = total + offset[i];
1170
1171                 if (is_2g)
1172                         REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1173                                       AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR,
1174                                       test);
1175                 else
1176                         REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1177                                       AR_PHY_65NM_RXRF_AGC_AGC5G_CALDAC_OVR,
1178                                       test);
1179                 udelay(100);
1180                 agc_out = REG_READ_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1181                                          AR_PHY_65NM_RXRF_AGC_AGC_OUT);
1182                 offset[i] = (agc_out) ? 0 : 1;
1183                 total += (offset[i] << (i - 1));
1184         }
1185
1186         if (is_2g)
1187                 REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1188                               AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR, total);
1189         else
1190                 REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1191                               AR_PHY_65NM_RXRF_AGC_AGC5G_CALDAC_OVR, total);
1192
1193         REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_GAINSTAGES(chain),
1194                       AR_PHY_65NM_RXRF_GAINSTAGES_RX_OVERRIDE, 0);
1195         REG_RMW_FIELD(ah, AR_PHY_65NM_RXTX2(chain),
1196                       AR_PHY_65NM_RXTX2_RXON_OVR, 0);
1197         REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1198                       AR_PHY_65NM_RXRF_AGC_AGC_CAL_OVR, 0);
1199 }
1200
1201 static void ar9003_hw_do_pcoem_manual_peak_cal(struct ath_hw *ah,
1202                                                struct ath9k_channel *chan,
1203                                                bool run_rtt_cal)
1204 {
1205         struct ath9k_hw_cal_data *caldata = ah->caldata;
1206         int i;
1207
1208         if (!AR_SREV_9462(ah) && !AR_SREV_9565(ah) && !AR_SREV_9485(ah))
1209                 return;
1210
1211         if ((ah->caps.hw_caps & ATH9K_HW_CAP_RTT) && !run_rtt_cal)
1212                 return;
1213
1214         for (i = 0; i < AR9300_MAX_CHAINS; i++) {
1215                 if (!(ah->rxchainmask & (1 << i)))
1216                         continue;
1217                 ar9003_hw_manual_peak_cal(ah, i, IS_CHAN_2GHZ(chan));
1218         }
1219
1220         if (caldata)
1221                 set_bit(SW_PKDET_DONE, &caldata->cal_flags);
1222
1223         if ((ah->caps.hw_caps & ATH9K_HW_CAP_RTT) && caldata) {
1224                 if (IS_CHAN_2GHZ(chan)){
1225                         caldata->caldac[0] = REG_READ_FIELD(ah,
1226                                                     AR_PHY_65NM_RXRF_AGC(0),
1227                                                     AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR);
1228                         caldata->caldac[1] = REG_READ_FIELD(ah,
1229                                                     AR_PHY_65NM_RXRF_AGC(1),
1230                                                     AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR);
1231                 } else {
1232                         caldata->caldac[0] = REG_READ_FIELD(ah,
1233                                                     AR_PHY_65NM_RXRF_AGC(0),
1234                                                     AR_PHY_65NM_RXRF_AGC_AGC5G_CALDAC_OVR);
1235                         caldata->caldac[1] = REG_READ_FIELD(ah,
1236                                                     AR_PHY_65NM_RXRF_AGC(1),
1237                                                     AR_PHY_65NM_RXRF_AGC_AGC5G_CALDAC_OVR);
1238                 }
1239         }
1240 }
1241
1242 static void ar9003_hw_cl_cal_post_proc(struct ath_hw *ah, bool is_reusable)
1243 {
1244         u32 cl_idx[AR9300_MAX_CHAINS] = { AR_PHY_CL_TAB_0,
1245                                           AR_PHY_CL_TAB_1,
1246                                           AR_PHY_CL_TAB_2 };
1247         struct ath9k_hw_cal_data *caldata = ah->caldata;
1248         bool txclcal_done = false;
1249         int i, j;
1250
1251         if (!caldata || !(ah->enabled_cals & TX_CL_CAL))
1252                 return;
1253
1254         txclcal_done = !!(REG_READ(ah, AR_PHY_AGC_CONTROL) &
1255                           AR_PHY_AGC_CONTROL_CLC_SUCCESS);
1256
1257         if (test_bit(TXCLCAL_DONE, &caldata->cal_flags)) {
1258                 for (i = 0; i < AR9300_MAX_CHAINS; i++) {
1259                         if (!(ah->txchainmask & (1 << i)))
1260                                 continue;
1261                         for (j = 0; j < MAX_CL_TAB_ENTRY; j++)
1262                                 REG_WRITE(ah, CL_TAB_ENTRY(cl_idx[i]),
1263                                           caldata->tx_clcal[i][j]);
1264                 }
1265         } else if (is_reusable && txclcal_done) {
1266                 for (i = 0; i < AR9300_MAX_CHAINS; i++) {
1267                         if (!(ah->txchainmask & (1 << i)))
1268                                 continue;
1269                         for (j = 0; j < MAX_CL_TAB_ENTRY; j++)
1270                                 caldata->tx_clcal[i][j] =
1271                                         REG_READ(ah, CL_TAB_ENTRY(cl_idx[i]));
1272                 }
1273                 set_bit(TXCLCAL_DONE, &caldata->cal_flags);
1274         }
1275 }
1276
1277 static bool ar9003_hw_init_cal_pcoem(struct ath_hw *ah,
1278                                      struct ath9k_channel *chan)
1279 {
1280         struct ath_common *common = ath9k_hw_common(ah);
1281         struct ath9k_hw_cal_data *caldata = ah->caldata;
1282         bool txiqcal_done = false;
1283         bool is_reusable = true, status = true;
1284         bool run_rtt_cal = false, run_agc_cal;
1285         bool rtt = !!(ah->caps.hw_caps & ATH9K_HW_CAP_RTT);
1286         u32 rx_delay = 0;
1287         u32 agc_ctrl = 0, agc_supp_cals = AR_PHY_AGC_CONTROL_OFFSET_CAL |
1288                                           AR_PHY_AGC_CONTROL_FLTR_CAL   |
1289                                           AR_PHY_AGC_CONTROL_PKDET_CAL;
1290
1291         /* Use chip chainmask only for calibration */
1292         ar9003_hw_set_chain_masks(ah, ah->caps.rx_chainmask, ah->caps.tx_chainmask);
1293
1294         if (rtt) {
1295                 if (!ar9003_hw_rtt_restore(ah, chan))
1296                         run_rtt_cal = true;
1297
1298                 if (run_rtt_cal)
1299                         ath_dbg(common, CALIBRATE, "RTT calibration to be done\n");
1300         }
1301
1302         run_agc_cal = run_rtt_cal;
1303
1304         if (run_rtt_cal) {
1305                 ar9003_hw_rtt_enable(ah);
1306                 ar9003_hw_rtt_set_mask(ah, 0x00);
1307                 ar9003_hw_rtt_clear_hist(ah);
1308         }
1309
1310         if (rtt) {
1311                 if (!run_rtt_cal) {
1312                         agc_ctrl = REG_READ(ah, AR_PHY_AGC_CONTROL);
1313                         agc_supp_cals &= agc_ctrl;
1314                         agc_ctrl &= ~(AR_PHY_AGC_CONTROL_OFFSET_CAL |
1315                                       AR_PHY_AGC_CONTROL_FLTR_CAL |
1316                                       AR_PHY_AGC_CONTROL_PKDET_CAL);
1317                         REG_WRITE(ah, AR_PHY_AGC_CONTROL, agc_ctrl);
1318                 } else {
1319                         if (ah->ah_flags & AH_FASTCC)
1320                                 run_agc_cal = true;
1321                 }
1322         }
1323
1324         if (ah->enabled_cals & TX_CL_CAL) {
1325                 if (caldata && test_bit(TXCLCAL_DONE, &caldata->cal_flags))
1326                         REG_CLR_BIT(ah, AR_PHY_CL_CAL_CTL,
1327                                     AR_PHY_CL_CAL_ENABLE);
1328                 else {
1329                         REG_SET_BIT(ah, AR_PHY_CL_CAL_CTL,
1330                                     AR_PHY_CL_CAL_ENABLE);
1331                         run_agc_cal = true;
1332                 }
1333         }
1334
1335         if ((IS_CHAN_HALF_RATE(chan) || IS_CHAN_QUARTER_RATE(chan)) ||
1336             !(ah->enabled_cals & TX_IQ_CAL))
1337                 goto skip_tx_iqcal;
1338
1339         /* Do Tx IQ Calibration */
1340         REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_1,
1341                       AR_PHY_TX_IQCAL_CONTROL_1_IQCORR_I_Q_COFF_DELPT,
1342                       DELPT);
1343
1344         /*
1345          * For AR9485 or later chips, TxIQ cal runs as part of
1346          * AGC calibration
1347          */
1348         if (ah->enabled_cals & TX_IQ_ON_AGC_CAL) {
1349                 if (caldata && !test_bit(TXIQCAL_DONE, &caldata->cal_flags))
1350                         REG_SET_BIT(ah, AR_PHY_TX_IQCAL_CONTROL_0,
1351                                     AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL);
1352                 else
1353                         REG_CLR_BIT(ah, AR_PHY_TX_IQCAL_CONTROL_0,
1354                                     AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL);
1355                 txiqcal_done = run_agc_cal = true;
1356         }
1357
1358 skip_tx_iqcal:
1359         if (ath9k_hw_mci_is_enabled(ah) && IS_CHAN_2GHZ(chan) && run_agc_cal)
1360                 ar9003_mci_init_cal_req(ah, &is_reusable);
1361
1362         if (REG_READ(ah, AR_PHY_CL_CAL_CTL) & AR_PHY_CL_CAL_ENABLE) {
1363                 rx_delay = REG_READ(ah, AR_PHY_RX_DELAY);
1364                 /* Disable BB_active */
1365                 REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_DIS);
1366                 udelay(5);
1367                 REG_WRITE(ah, AR_PHY_RX_DELAY, AR_PHY_RX_DELAY_DELAY);
1368                 REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);
1369         }
1370
1371         if (run_agc_cal || !(ah->ah_flags & AH_FASTCC)) {
1372                 /* Calibrate the AGC */
1373                 REG_WRITE(ah, AR_PHY_AGC_CONTROL,
1374                           REG_READ(ah, AR_PHY_AGC_CONTROL) |
1375                           AR_PHY_AGC_CONTROL_CAL);
1376
1377                 /* Poll for offset calibration complete */
1378                 status = ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL,
1379                                        AR_PHY_AGC_CONTROL_CAL,
1380                                        0, AH_WAIT_TIMEOUT);
1381
1382                 ar9003_hw_do_pcoem_manual_peak_cal(ah, chan, run_rtt_cal);
1383         }
1384
1385         if (REG_READ(ah, AR_PHY_CL_CAL_CTL) & AR_PHY_CL_CAL_ENABLE) {
1386                 REG_WRITE(ah, AR_PHY_RX_DELAY, rx_delay);
1387                 udelay(5);
1388         }
1389
1390         if (ath9k_hw_mci_is_enabled(ah) && IS_CHAN_2GHZ(chan) && run_agc_cal)
1391                 ar9003_mci_init_cal_done(ah);
1392
1393         if (rtt && !run_rtt_cal) {
1394                 agc_ctrl |= agc_supp_cals;
1395                 REG_WRITE(ah, AR_PHY_AGC_CONTROL, agc_ctrl);
1396         }
1397
1398         if (!status) {
1399                 if (run_rtt_cal)
1400                         ar9003_hw_rtt_disable(ah);
1401
1402                 ath_dbg(common, CALIBRATE,
1403                         "offset calibration failed to complete in %d ms; noisy environment?\n",
1404                         AH_WAIT_TIMEOUT / 1000);
1405                 return false;
1406         }
1407
1408         if (txiqcal_done)
1409                 ar9003_hw_tx_iq_cal_post_proc(ah, is_reusable);
1410         else if (caldata && test_bit(TXIQCAL_DONE, &caldata->cal_flags))
1411                 ar9003_hw_tx_iq_cal_reload(ah);
1412
1413         ar9003_hw_cl_cal_post_proc(ah, is_reusable);
1414
1415         if (run_rtt_cal && caldata) {
1416                 if (is_reusable) {
1417                         if (!ath9k_hw_rfbus_req(ah)) {
1418                                 ath_err(ath9k_hw_common(ah),
1419                                         "Could not stop baseband\n");
1420                         } else {
1421                                 ar9003_hw_rtt_fill_hist(ah);
1422
1423                                 if (test_bit(SW_PKDET_DONE, &caldata->cal_flags))
1424                                         ar9003_hw_rtt_load_hist(ah);
1425                         }
1426
1427                         ath9k_hw_rfbus_done(ah);
1428                 }
1429
1430                 ar9003_hw_rtt_disable(ah);
1431         }
1432
1433         /* Revert chainmask to runtime parameters */
1434         ar9003_hw_set_chain_masks(ah, ah->rxchainmask, ah->txchainmask);
1435
1436         /* Initialize list pointers */
1437         ah->cal_list = ah->cal_list_last = ah->cal_list_curr = NULL;
1438
1439         INIT_CAL(&ah->iq_caldata);
1440         INSERT_CAL(ah, &ah->iq_caldata);
1441         ath_dbg(common, CALIBRATE, "enabling IQ Calibration\n");
1442
1443         /* Initialize current pointer to first element in list */
1444         ah->cal_list_curr = ah->cal_list;
1445
1446         if (ah->cal_list_curr)
1447                 ath9k_hw_reset_calibration(ah, ah->cal_list_curr);
1448
1449         if (caldata)
1450                 caldata->CalValid = 0;
1451
1452         return true;
1453 }
1454
1455 static bool ar9003_hw_init_cal_soc(struct ath_hw *ah,
1456                                    struct ath9k_channel *chan)
1457 {
1458         struct ath_common *common = ath9k_hw_common(ah);
1459         struct ath9k_hw_cal_data *caldata = ah->caldata;
1460         bool txiqcal_done = false;
1461         bool status = true;
1462         bool run_agc_cal = false, sep_iq_cal = false;
1463
1464         /* Use chip chainmask only for calibration */
1465         ar9003_hw_set_chain_masks(ah, ah->caps.rx_chainmask, ah->caps.tx_chainmask);
1466
1467         if (ah->enabled_cals & TX_CL_CAL) {
1468                 REG_SET_BIT(ah, AR_PHY_CL_CAL_CTL, AR_PHY_CL_CAL_ENABLE);
1469                 run_agc_cal = true;
1470         }
1471
1472         if (IS_CHAN_HALF_RATE(chan) || IS_CHAN_QUARTER_RATE(chan))
1473                 goto skip_tx_iqcal;
1474
1475         /* Do Tx IQ Calibration */
1476         REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_1,
1477                       AR_PHY_TX_IQCAL_CONTROL_1_IQCORR_I_Q_COFF_DELPT,
1478                       DELPT);
1479
1480         /*
1481          * For AR9485 or later chips, TxIQ cal runs as part of
1482          * AGC calibration. Specifically, AR9550 in SoC chips.
1483          */
1484         if (ah->enabled_cals & TX_IQ_ON_AGC_CAL) {
1485                 if (REG_READ_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_0,
1486                                    AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL)) {
1487                                 txiqcal_done = true;
1488                 } else {
1489                         txiqcal_done = false;
1490                 }
1491                 run_agc_cal = true;
1492         } else {
1493                 sep_iq_cal = true;
1494                 run_agc_cal = true;
1495         }
1496
1497         /*
1498          * In the SoC family, this will run for AR9300, AR9331 and AR9340.
1499          */
1500         if (sep_iq_cal) {
1501                 txiqcal_done = ar9003_hw_tx_iq_cal_run(ah);
1502                 REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_DIS);
1503                 udelay(5);
1504                 REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);
1505         }
1506
1507         if (AR_SREV_9550(ah) && IS_CHAN_2GHZ(chan)) {
1508                 if (!ar9003_hw_dynamic_osdac_selection(ah, txiqcal_done))
1509                         return false;
1510         }
1511
1512 skip_tx_iqcal:
1513         if (run_agc_cal || !(ah->ah_flags & AH_FASTCC)) {
1514                 if (AR_SREV_9330_11(ah))
1515                         ar9003_hw_manual_peak_cal(ah, 0, IS_CHAN_2GHZ(chan));
1516
1517                 /* Calibrate the AGC */
1518                 REG_WRITE(ah, AR_PHY_AGC_CONTROL,
1519                           REG_READ(ah, AR_PHY_AGC_CONTROL) |
1520                           AR_PHY_AGC_CONTROL_CAL);
1521
1522                 /* Poll for offset calibration complete */
1523                 status = ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL,
1524                                        AR_PHY_AGC_CONTROL_CAL,
1525                                        0, AH_WAIT_TIMEOUT);
1526         }
1527
1528         if (!status) {
1529                 ath_dbg(common, CALIBRATE,
1530                         "offset calibration failed to complete in %d ms; noisy environment?\n",
1531                         AH_WAIT_TIMEOUT / 1000);
1532                 return false;
1533         }
1534
1535         if (txiqcal_done)
1536                 ar9003_hw_tx_iq_cal_post_proc(ah, false);
1537
1538         /* Revert chainmask to runtime parameters */
1539         ar9003_hw_set_chain_masks(ah, ah->rxchainmask, ah->txchainmask);
1540
1541         /* Initialize list pointers */
1542         ah->cal_list = ah->cal_list_last = ah->cal_list_curr = NULL;
1543
1544         INIT_CAL(&ah->iq_caldata);
1545         INSERT_CAL(ah, &ah->iq_caldata);
1546         ath_dbg(common, CALIBRATE, "enabling IQ Calibration\n");
1547
1548         /* Initialize current pointer to first element in list */
1549         ah->cal_list_curr = ah->cal_list;
1550
1551         if (ah->cal_list_curr)
1552                 ath9k_hw_reset_calibration(ah, ah->cal_list_curr);
1553
1554         if (caldata)
1555                 caldata->CalValid = 0;
1556
1557         return true;
1558 }
1559
1560 void ar9003_hw_attach_calib_ops(struct ath_hw *ah)
1561 {
1562         struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah);
1563         struct ath_hw_ops *ops = ath9k_hw_ops(ah);
1564
1565         if (AR_SREV_9485(ah) || AR_SREV_9462(ah) || AR_SREV_9565(ah))
1566                 priv_ops->init_cal = ar9003_hw_init_cal_pcoem;
1567         else
1568                 priv_ops->init_cal = ar9003_hw_init_cal_soc;
1569
1570         priv_ops->init_cal_settings = ar9003_hw_init_cal_settings;
1571         priv_ops->setup_calibration = ar9003_hw_setup_calibration;
1572
1573         ops->calibrate = ar9003_hw_calibrate;
1574 }