drivers/net/wireless/ath/ath9k_btcoex/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         TEMP_COMP_CAL = BIT(1),
  36 };
  37
  38 static void ar9003_hw_setup_calibration(struct ath_hw *ah,
  39                                         struct ath9k_cal_list *currCal)
  40 {
  41         struct ath_common *common = ath9k_hw_common(ah);
  42
  43         /* Select calibration to run */
  44         switch (currCal->calData->calType) {
  45         case IQ_MISMATCH_CAL:
  46                 /*
  47                  * Start calibration with
  48                  * 2^(INIT_IQCAL_LOG_COUNT_MAX+1) samples
  49                  */
  50                 REG_RMW_FIELD(ah, AR_PHY_TIMING4,
  51                               AR_PHY_TIMING4_IQCAL_LOG_COUNT_MAX,
  52                 currCal->calData->calCountMax);
  53                 REG_WRITE(ah, AR_PHY_CALMODE, AR_PHY_CALMODE_IQ);
  54
  55                 ath_dbg(common, CALIBRATE,
  56                         "starting IQ Mismatch Calibration\n");
  57
  58                 /* Kick-off cal */
  59                 REG_SET_BIT(ah, AR_PHY_TIMING4, AR_PHY_TIMING4_DO_CAL);
  60                 break;
  61         case TEMP_COMP_CAL:
  62                 REG_RMW_FIELD(ah, AR_PHY_65NM_CH0_THERM,
  63                               AR_PHY_65NM_CH0_THERM_LOCAL, 1);
  64                 REG_RMW_FIELD(ah, AR_PHY_65NM_CH0_THERM,
  65                               AR_PHY_65NM_CH0_THERM_START, 1);
  66
  67                 ath_dbg(common, CALIBRATE,
  68                         "starting Temperature Compensation Calibration\n");
  69                 break;
  70         }
  71 }
  72
  73 /*
  74  * Generic calibration routine.
  75  * Recalibrate the lower PHY chips to account for temperature/environment
  76  * changes.
  77  */
  78 static bool ar9003_hw_per_calibration(struct ath_hw *ah,
  79                                       struct ath9k_channel *ichan,
  80                                       u8 rxchainmask,
  81                                       struct ath9k_cal_list *currCal)
  82 {
  83         struct ath9k_hw_cal_data *caldata = ah->caldata;
  84         /* Cal is assumed not done until explicitly set below */
  85         bool iscaldone = false;
  86
  87         /* Calibration in progress. */
  88         if (currCal->calState == CAL_RUNNING) {
  89                 /* Check to see if it has finished. */
  90                 if (!(REG_READ(ah, AR_PHY_TIMING4) & AR_PHY_TIMING4_DO_CAL)) {
  91                         /*
  92                         * Accumulate cal measures for active chains
  93                         */
  94                         currCal->calData->calCollect(ah);
  95                         ah->cal_samples++;
  96
  97                         if (ah->cal_samples >=
  98                             currCal->calData->calNumSamples) {
  99                                 unsigned int i, numChains = 0;
 100                                 for (i = 0; i < AR9300_MAX_CHAINS; i++) {
 101                                         if (rxchainmask & (1 << i))
 102                                                 numChains++;
 103                                 }
 104
 105                                 /*
 106                                 * Process accumulated data
 107                                 */
 108                                 currCal->calData->calPostProc(ah, numChains);
 109
 110                                 /* Calibration has finished. */
 111                                 caldata->CalValid |= currCal->calData->calType;
 112                                 currCal->calState = CAL_DONE;
 113                                 iscaldone = true;
 114                         } else {
 115                         /*
 116                          * Set-up collection of another sub-sample until we
 117                          * get desired number
 118                          */
 119                         ar9003_hw_setup_calibration(ah, currCal);
 120                         }
 121                 }
 122         } else if (!(caldata->CalValid & currCal->calData->calType)) {
 123                 /* If current cal is marked invalid in channel, kick it off */
 124                 ath9k_hw_reset_calibration(ah, currCal);
 125         }
 126
 127         return iscaldone;
 128 }
 129
 130 static bool ar9003_hw_calibrate(struct ath_hw *ah,
 131                                 struct ath9k_channel *chan,
 132                                 u8 rxchainmask,
 133                                 bool longcal)
 134 {
 135         bool iscaldone = true;
 136         struct ath9k_cal_list *currCal = ah->cal_list_curr;
 137
 138         /*
 139          * For given calibration:
 140          * 1. Call generic cal routine
 141          * 2. When this cal is done (isCalDone) if we have more cals waiting
 142          *    (eg after reset), mask this to upper layers by not propagating
 143          *    isCalDone if it is set to TRUE.
 144          *    Instead, change isCalDone to FALSE and setup the waiting cal(s)
 145          *    to be run.
 146          */
 147         if (currCal &&
 148             (currCal->calState == CAL_RUNNING ||
 149              currCal->calState == CAL_WAITING)) {
 150                 iscaldone = ar9003_hw_per_calibration(ah, chan,
 151                                                       rxchainmask, currCal);
 152                 if (iscaldone) {
 153                         ah->cal_list_curr = currCal = currCal->calNext;
 154
 155                         if (currCal->calState == CAL_WAITING) {
 156                                 iscaldone = false;
 157                                 ath9k_hw_reset_calibration(ah, currCal);
 158                         }
 159                 }
 160         }
 161
 162         /*
 163          * Do NF cal only at longer intervals. Get the value from
 164          * the previous NF cal and update history buffer.
 165          */
 166         if (longcal && ath9k_btcoex_ath9k_hw_getnf(ah, chan)) {
 167                 /*
 168                  * Load the NF from history buffer of the current channel.
 169                  * NF is slow time-variant, so it is OK to use a historical
 170                  * value.
 171                  */
 172                 ath9k_hw_loadnf(ah, ah->curchan);
 173
 174                 /* start NF calibration, without updating BB NF register */
 175                 ath9k_hw_start_nfcal(ah, false);
 176         }
 177
 178         return iscaldone;
 179 }
 180
 181 static void ar9003_hw_iqcal_collect(struct ath_hw *ah)
 182 {
 183         int i;
 184
 185         /* Accumulate IQ cal measures for active chains */
 186         for (i = 0; i < AR5416_MAX_CHAINS; i++) {
 187                 if (ah->txchainmask & BIT(i)) {
 188                         ah->totalPowerMeasI[i] +=
 189                                 REG_READ(ah, AR_PHY_CAL_MEAS_0(i));
 190                         ah->totalPowerMeasQ[i] +=
 191                                 REG_READ(ah, AR_PHY_CAL_MEAS_1(i));
 192                         ah->totalIqCorrMeas[i] +=
 193                                 (int32_t) REG_READ(ah, AR_PHY_CAL_MEAS_2(i));
 194                         ath_dbg(ath9k_hw_common(ah), CALIBRATE,
 195                                 "%d: Chn %d pmi=0x%08x;pmq=0x%08x;iqcm=0x%08x;\n",
 196                                 ah->cal_samples, i, ah->totalPowerMeasI[i],
 197                                 ah->totalPowerMeasQ[i],
 198                                 ah->totalIqCorrMeas[i]);
 199                 }
 200         }
 201 }
 202
 203 static void ar9003_hw_iqcalibrate(struct ath_hw *ah, u8 numChains)
 204 {
 205         struct ath_common *common = ath9k_hw_common(ah);
 206         u32 powerMeasQ, powerMeasI, iqCorrMeas;
 207         u32 qCoffDenom, iCoffDenom;
 208         int32_t qCoff, iCoff;
 209         int iqCorrNeg, i;
 210         static const u_int32_t offset_array[3] = {
 211                 AR_PHY_RX_IQCAL_CORR_B0,
 212                 AR_PHY_RX_IQCAL_CORR_B1,
 213                 AR_PHY_RX_IQCAL_CORR_B2,
 214         };
 215
 216         for (i = 0; i < numChains; i++) {
 217                 powerMeasI = ah->totalPowerMeasI[i];
 218                 powerMeasQ = ah->totalPowerMeasQ[i];
 219                 iqCorrMeas = ah->totalIqCorrMeas[i];
 220
 221                 ath_dbg(common, CALIBRATE,
 222                         "Starting IQ Cal and Correction for Chain %d\n", i);
 223
 224                 ath_dbg(common, CALIBRATE,
 225                         "Original: Chn %d iq_corr_meas = 0x%08x\n",
 226                         i, ah->totalIqCorrMeas[i]);
 227
 228                 iqCorrNeg = 0;
 229
 230                 if (iqCorrMeas > 0x80000000) {
 231                         iqCorrMeas = (0xffffffff - iqCorrMeas) + 1;
 232                         iqCorrNeg = 1;
 233                 }
 234
 235                 ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_i = 0x%08x\n",
 236                         i, powerMeasI);
 237                 ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_q = 0x%08x\n",
 238                         i, powerMeasQ);
 239                 ath_dbg(common, CALIBRATE, "iqCorrNeg is 0x%08x\n", iqCorrNeg);
 240
 241                 iCoffDenom = (powerMeasI / 2 + powerMeasQ / 2) / 256;
 242                 qCoffDenom = powerMeasQ / 64;
 243
 244                 if ((iCoffDenom != 0) && (qCoffDenom != 0)) {
 245                         iCoff = iqCorrMeas / iCoffDenom;
 246                         qCoff = powerMeasI / qCoffDenom - 64;
 247                         ath_dbg(common, CALIBRATE, "Chn %d iCoff = 0x%08x\n",
 248                                 i, iCoff);
 249                         ath_dbg(common, CALIBRATE, "Chn %d qCoff = 0x%08x\n",
 250                                 i, qCoff);
 251
 252                         /* Force bounds on iCoff */
 253                         if (iCoff >= 63)
 254                                 iCoff = 63;
 255                         else if (iCoff <= -63)
 256                                 iCoff = -63;
 257
 258                         /* Negate iCoff if iqCorrNeg == 0 */
 259                         if (iqCorrNeg == 0x0)
 260                                 iCoff = -iCoff;
 261
 262                         /* Force bounds on qCoff */
 263                         if (qCoff >= 63)
 264                                 qCoff = 63;
 265                         else if (qCoff <= -63)
 266                                 qCoff = -63;
 267
 268                         iCoff = iCoff & 0x7f;
 269                         qCoff = qCoff & 0x7f;
 270
 271                         ath_dbg(common, CALIBRATE,
 272                                 "Chn %d : iCoff = 0x%x  qCoff = 0x%x\n",
 273                                 i, iCoff, qCoff);
 274                         ath_dbg(common, CALIBRATE,
 275                                 "Register offset (0x%04x) before update = 0x%x\n",
 276                                 offset_array[i],
 277                                 REG_READ(ah, offset_array[i]));
 278
 279                         REG_RMW_FIELD(ah, offset_array[i],
 280                                       AR_PHY_RX_IQCAL_CORR_IQCORR_Q_I_COFF,
 281                                       iCoff);
 282                         REG_RMW_FIELD(ah, offset_array[i],
 283                                       AR_PHY_RX_IQCAL_CORR_IQCORR_Q_Q_COFF,
 284                                       qCoff);
 285                         ath_dbg(common, CALIBRATE,
 286                                 "Register offset (0x%04x) QI COFF (bitfields 0x%08x) after update = 0x%x\n",
 287                                 offset_array[i],
 288                                 AR_PHY_RX_IQCAL_CORR_IQCORR_Q_I_COFF,
 289                                 REG_READ(ah, offset_array[i]));
 290                         ath_dbg(common, CALIBRATE,
 291                                 "Register offset (0x%04x) QQ COFF (bitfields 0x%08x) after update = 0x%x\n",
 292                                 offset_array[i],
 293                                 AR_PHY_RX_IQCAL_CORR_IQCORR_Q_Q_COFF,
 294                                 REG_READ(ah, offset_array[i]));
 295
 296                         ath_dbg(common, CALIBRATE,
 297                                 "IQ Cal and Correction done for Chain %d\n", i);
 298                 }
 299         }
 300
 301         REG_SET_BIT(ah, AR_PHY_RX_IQCAL_CORR_B0,
 302                     AR_PHY_RX_IQCAL_CORR_IQCORR_ENABLE);
 303         ath_dbg(common, CALIBRATE,
 304                 "IQ Cal and Correction (offset 0x%04x) enabled (bit position 0x%08x). New Value 0x%08x\n",
 305                 (unsigned) (AR_PHY_RX_IQCAL_CORR_B0),
 306                 AR_PHY_RX_IQCAL_CORR_IQCORR_ENABLE,
 307                 REG_READ(ah, AR_PHY_RX_IQCAL_CORR_B0));
 308 }
 309
 310 static const struct ath9k_percal_data iq_cal_single_sample = {
 311         IQ_MISMATCH_CAL,
 312         MIN_CAL_SAMPLES,
 313         PER_MAX_LOG_COUNT,
 314         ar9003_hw_iqcal_collect,
 315         ar9003_hw_iqcalibrate
 316 };
 317
 318 static void ar9003_hw_init_cal_settings(struct ath_hw *ah)
 319 {
 320         ah->iq_caldata.calData = &iq_cal_single_sample;
 321 }
 322
 323 /*
 324  * solve 4x4 linear equation used in loopback iq cal.
 325  */
 326 static bool ar9003_hw_solve_iq_cal(struct ath_hw *ah,
 327                                    s32 sin_2phi_1,
 328                                    s32 cos_2phi_1,
 329                                    s32 sin_2phi_2,
 330                                    s32 cos_2phi_2,
 331                                    s32 mag_a0_d0,
 332                                    s32 phs_a0_d0,
 333                                    s32 mag_a1_d0,
 334                                    s32 phs_a1_d0,
 335                                    s32 solved_eq[])
 336 {
 337         s32 f1 = cos_2phi_1 - cos_2phi_2,
 338             f3 = sin_2phi_1 - sin_2phi_2,
 339             f2;
 340         s32 mag_tx, phs_tx, mag_rx, phs_rx;
 341         const s32 result_shift = 1 << 15;
 342         struct ath_common *common = ath9k_hw_common(ah);
 343
 344         f2 = (f1 * f1 + f3 * f3) / result_shift;
 345
 346         if (!f2) {
 347                 ath_dbg(common, CALIBRATE, "Divide by 0\n");
 348                 return false;
 349         }
 350
 351         /* mag mismatch, tx */
 352         mag_tx = f1 * (mag_a0_d0  - mag_a1_d0) + f3 * (phs_a0_d0 - phs_a1_d0);
 353         /* phs mismatch, tx */
 354         phs_tx = f3 * (-mag_a0_d0 + mag_a1_d0) + f1 * (phs_a0_d0 - phs_a1_d0);
 355
 356         mag_tx = (mag_tx / f2);
 357         phs_tx = (phs_tx / f2);
 358
 359         /* mag mismatch, rx */
 360         mag_rx = mag_a0_d0 - (cos_2phi_1 * mag_tx + sin_2phi_1 * phs_tx) /
 361                  result_shift;
 362         /* phs mismatch, rx */
 363         phs_rx = phs_a0_d0 + (sin_2phi_1 * mag_tx - cos_2phi_1 * phs_tx) /
 364                  result_shift;
 365
 366         solved_eq[0] = mag_tx;
 367         solved_eq[1] = phs_tx;
 368         solved_eq[2] = mag_rx;
 369         solved_eq[3] = phs_rx;
 370
 371         return true;
 372 }
 373
 374 static s32 ar9003_hw_find_mag_approx(struct ath_hw *ah, s32 in_re, s32 in_im)
 375 {
 376         s32 abs_i = abs(in_re),
 377             abs_q = abs(in_im),
 378             max_abs, min_abs;
 379
 380         if (abs_i > abs_q) {
 381                 max_abs = abs_i;
 382                 min_abs = abs_q;
 383         } else {
 384                 max_abs = abs_q;
 385                 min_abs = abs_i;
 386         }
 387
 388         return max_abs - (max_abs / 32) + (min_abs / 8) + (min_abs / 4);
 389 }
 390
 391 #define DELPT 32
 392
 393 static bool ar9003_hw_calc_iq_corr(struct ath_hw *ah,
 394                                    s32 chain_idx,
 395                                    const s32 iq_res[],
 396                                    s32 iqc_coeff[])
 397 {
 398         s32 i2_m_q2_a0_d0, i2_p_q2_a0_d0, iq_corr_a0_d0,
 399             i2_m_q2_a0_d1, i2_p_q2_a0_d1, iq_corr_a0_d1,
 400             i2_m_q2_a1_d0, i2_p_q2_a1_d0, iq_corr_a1_d0,
 401             i2_m_q2_a1_d1, i2_p_q2_a1_d1, iq_corr_a1_d1;
 402         s32 mag_a0_d0, mag_a1_d0, mag_a0_d1, mag_a1_d1,
 403             phs_a0_d0, phs_a1_d0, phs_a0_d1, phs_a1_d1,
 404             sin_2phi_1, cos_2phi_1,
 405             sin_2phi_2, cos_2phi_2;
 406         s32 mag_tx, phs_tx, mag_rx, phs_rx;
 407         s32 solved_eq[4], mag_corr_tx, phs_corr_tx, mag_corr_rx, phs_corr_rx,
 408             q_q_coff, q_i_coff;
 409         const s32 res_scale = 1 << 15;
 410         const s32 delpt_shift = 1 << 8;
 411         s32 mag1, mag2;
 412         struct ath_common *common = ath9k_hw_common(ah);
 413
 414         i2_m_q2_a0_d0 = iq_res[0] & 0xfff;
 415         i2_p_q2_a0_d0 = (iq_res[0] >> 12) & 0xfff;
 416         iq_corr_a0_d0 = ((iq_res[0] >> 24) & 0xff) + ((iq_res[1] & 0xf) << 8);
 417
 418         if (i2_m_q2_a0_d0 > 0x800)
 419                 i2_m_q2_a0_d0 = -((0xfff - i2_m_q2_a0_d0) + 1);
 420
 421         if (i2_p_q2_a0_d0 > 0x800)
 422                 i2_p_q2_a0_d0 = -((0xfff - i2_p_q2_a0_d0) + 1);
 423
 424         if (iq_corr_a0_d0 > 0x800)
 425                 iq_corr_a0_d0 = -((0xfff - iq_corr_a0_d0) + 1);
 426
 427         i2_m_q2_a0_d1 = (iq_res[1] >> 4) & 0xfff;
 428         i2_p_q2_a0_d1 = (iq_res[2] & 0xfff);
 429         iq_corr_a0_d1 = (iq_res[2] >> 12) & 0xfff;
 430
 431         if (i2_m_q2_a0_d1 > 0x800)
 432                 i2_m_q2_a0_d1 = -((0xfff - i2_m_q2_a0_d1) + 1);
 433
 434         if (i2_p_q2_a0_d1 > 0x800)
 435                 i2_p_q2_a0_d1 = -((0xfff - i2_p_q2_a0_d1) + 1);
 436
 437         if (iq_corr_a0_d1 > 0x800)
 438                 iq_corr_a0_d1 = -((0xfff - iq_corr_a0_d1) + 1);
 439
 440         i2_m_q2_a1_d0 = ((iq_res[2] >> 24) & 0xff) + ((iq_res[3] & 0xf) << 8);
 441         i2_p_q2_a1_d0 = (iq_res[3] >> 4) & 0xfff;
 442         iq_corr_a1_d0 = iq_res[4] & 0xfff;
 443
 444         if (i2_m_q2_a1_d0 > 0x800)
 445                 i2_m_q2_a1_d0 = -((0xfff - i2_m_q2_a1_d0) + 1);
 446
 447         if (i2_p_q2_a1_d0 > 0x800)
 448                 i2_p_q2_a1_d0 = -((0xfff - i2_p_q2_a1_d0) + 1);
 449
 450         if (iq_corr_a1_d0 > 0x800)
 451                 iq_corr_a1_d0 = -((0xfff - iq_corr_a1_d0) + 1);
 452
 453         i2_m_q2_a1_d1 = (iq_res[4] >> 12) & 0xfff;
 454         i2_p_q2_a1_d1 = ((iq_res[4] >> 24) & 0xff) + ((iq_res[5] & 0xf) << 8);
 455         iq_corr_a1_d1 = (iq_res[5] >> 4) & 0xfff;
 456
 457         if (i2_m_q2_a1_d1 > 0x800)
 458                 i2_m_q2_a1_d1 = -((0xfff - i2_m_q2_a1_d1) + 1);
 459
 460         if (i2_p_q2_a1_d1 > 0x800)
 461                 i2_p_q2_a1_d1 = -((0xfff - i2_p_q2_a1_d1) + 1);
 462
 463         if (iq_corr_a1_d1 > 0x800)
 464                 iq_corr_a1_d1 = -((0xfff - iq_corr_a1_d1) + 1);
 465
 466         if ((i2_p_q2_a0_d0 == 0) || (i2_p_q2_a0_d1 == 0) ||
 467             (i2_p_q2_a1_d0 == 0) || (i2_p_q2_a1_d1 == 0)) {
 468                 ath_dbg(common, CALIBRATE,
 469                         "Divide by 0:\n"
 470                         "a0_d0=%d\n"
 471                         "a0_d1=%d\n"
 472                         "a2_d0=%d\n"
 473                         "a1_d1=%d\n",
 474                         i2_p_q2_a0_d0, i2_p_q2_a0_d1,
 475                         i2_p_q2_a1_d0, i2_p_q2_a1_d1);
 476                 return false;
 477         }
 478
 479         mag_a0_d0 = (i2_m_q2_a0_d0 * res_scale) / i2_p_q2_a0_d0;
 480         phs_a0_d0 = (iq_corr_a0_d0 * res_scale) / i2_p_q2_a0_d0;
 481
 482         mag_a0_d1 = (i2_m_q2_a0_d1 * res_scale) / i2_p_q2_a0_d1;
 483         phs_a0_d1 = (iq_corr_a0_d1 * res_scale) / i2_p_q2_a0_d1;
 484
 485         mag_a1_d0 = (i2_m_q2_a1_d0 * res_scale) / i2_p_q2_a1_d0;
 486         phs_a1_d0 = (iq_corr_a1_d0 * res_scale) / i2_p_q2_a1_d0;
 487
 488         mag_a1_d1 = (i2_m_q2_a1_d1 * res_scale) / i2_p_q2_a1_d1;
 489         phs_a1_d1 = (iq_corr_a1_d1 * res_scale) / i2_p_q2_a1_d1;
 490
 491         /* w/o analog phase shift */
 492         sin_2phi_1 = (((mag_a0_d0 - mag_a0_d1) * delpt_shift) / DELPT);
 493         /* w/o analog phase shift */
 494         cos_2phi_1 = (((phs_a0_d1 - phs_a0_d0) * delpt_shift) / DELPT);
 495         /* w/  analog phase shift */
 496         sin_2phi_2 = (((mag_a1_d0 - mag_a1_d1) * delpt_shift) / DELPT);
 497         /* w/  analog phase shift */
 498         cos_2phi_2 = (((phs_a1_d1 - phs_a1_d0) * delpt_shift) / DELPT);
 499
 500         /*
 501          * force sin^2 + cos^2 = 1;
 502          * find magnitude by approximation
 503          */
 504         mag1 = ar9003_hw_find_mag_approx(ah, cos_2phi_1, sin_2phi_1);
 505         mag2 = ar9003_hw_find_mag_approx(ah, cos_2phi_2, sin_2phi_2);
 506
 507         if ((mag1 == 0) || (mag2 == 0)) {
 508                 ath_dbg(common, CALIBRATE, "Divide by 0: mag1=%d, mag2=%d\n",
 509                         mag1, mag2);
 510                 return false;
 511         }
 512
 513         /* normalization sin and cos by mag */
 514         sin_2phi_1 = (sin_2phi_1 * res_scale / mag1);
 515         cos_2phi_1 = (cos_2phi_1 * res_scale / mag1);
 516         sin_2phi_2 = (sin_2phi_2 * res_scale / mag2);
 517         cos_2phi_2 = (cos_2phi_2 * res_scale / mag2);
 518
 519         /* calculate IQ mismatch */
 520         if (!ar9003_hw_solve_iq_cal(ah,
 521                              sin_2phi_1, cos_2phi_1,
 522                              sin_2phi_2, cos_2phi_2,
 523                              mag_a0_d0, phs_a0_d0,
 524                              mag_a1_d0,
 525                              phs_a1_d0, solved_eq)) {
 526                 ath_dbg(common, CALIBRATE,
 527                         "Call to ar9003_hw_solve_iq_cal() failed\n");
 528                 return false;
 529         }
 530
 531         mag_tx = solved_eq[0];
 532         phs_tx = solved_eq[1];
 533         mag_rx = solved_eq[2];
 534         phs_rx = solved_eq[3];
 535
 536         ath_dbg(common, CALIBRATE,
 537                 "chain %d: mag mismatch=%d phase mismatch=%d\n",
 538                 chain_idx, mag_tx/res_scale, phs_tx/res_scale);
 539
 540         if (res_scale == mag_tx) {
 541                 ath_dbg(common, CALIBRATE,
 542                         "Divide by 0: mag_tx=%d, res_scale=%d\n",
 543                         mag_tx, res_scale);
 544                 return false;
 545         }
 546
 547         /* calculate and quantize Tx IQ correction factor */
 548         mag_corr_tx = (mag_tx * res_scale) / (res_scale - mag_tx);
 549         phs_corr_tx = -phs_tx;
 550
 551         q_q_coff = (mag_corr_tx * 128 / res_scale);
 552         q_i_coff = (phs_corr_tx * 256 / res_scale);
 553
 554         ath_dbg(common, CALIBRATE, "tx chain %d: mag corr=%d  phase corr=%d\n",
 555                 chain_idx, q_q_coff, q_i_coff);
 556
 557         if (q_i_coff < -63)
 558                 q_i_coff = -63;
 559         if (q_i_coff > 63)
 560                 q_i_coff = 63;
 561         if (q_q_coff < -63)
 562                 q_q_coff = -63;
 563         if (q_q_coff > 63)
 564                 q_q_coff = 63;
 565
 566         iqc_coeff[0] = (q_q_coff * 128) + q_i_coff;
 567
 568         ath_dbg(common, CALIBRATE, "tx chain %d: iq corr coeff=%x\n",
 569                 chain_idx, iqc_coeff[0]);
 570
 571         if (-mag_rx == res_scale) {
 572                 ath_dbg(common, CALIBRATE,
 573                         "Divide by 0: mag_rx=%d, res_scale=%d\n",
 574                         mag_rx, res_scale);
 575                 return false;
 576         }
 577
 578         /* calculate and quantize Rx IQ correction factors */
 579         mag_corr_rx = (-mag_rx * res_scale) / (res_scale + mag_rx);
 580         phs_corr_rx = -phs_rx;
 581
 582         q_q_coff = (mag_corr_rx * 128 / res_scale);
 583         q_i_coff = (phs_corr_rx * 256 / res_scale);
 584
 585         ath_dbg(common, CALIBRATE, "rx chain %d: mag corr=%d  phase corr=%d\n",
 586                 chain_idx, q_q_coff, q_i_coff);
 587
 588         if (q_i_coff < -63)
 589                 q_i_coff = -63;
 590         if (q_i_coff > 63)
 591                 q_i_coff = 63;
 592         if (q_q_coff < -63)
 593                 q_q_coff = -63;
 594         if (q_q_coff > 63)
 595                 q_q_coff = 63;
 596
 597         iqc_coeff[1] = (q_q_coff * 128) + q_i_coff;
 598
 599         ath_dbg(common, CALIBRATE, "rx chain %d: iq corr coeff=%x\n",
 600                 chain_idx, iqc_coeff[1]);
 601
 602         return true;
 603 }
 604
 605 static void ar9003_hw_detect_outlier(int *mp_coeff, int nmeasurement,
 606                                      int max_delta)
 607 {
 608         int mp_max = -64, max_idx = 0;
 609         int mp_min = 63, min_idx = 0;
 610         int mp_avg = 0, i, outlier_idx = 0, mp_count = 0;
 611
 612         /* find min/max mismatch across all calibrated gains */
 613         for (i = 0; i < nmeasurement; i++) {
 614                 if (mp_coeff[i] > mp_max) {
 615                         mp_max = mp_coeff[i];
 616                         max_idx = i;
 617                 } else if (mp_coeff[i] < mp_min) {
 618                         mp_min = mp_coeff[i];
 619                         min_idx = i;
 620                 }
 621         }
 622
 623         /* find average (exclude max abs value) */
 624         for (i = 0; i < nmeasurement; i++) {
 625                 if ((abs(mp_coeff[i]) < abs(mp_max)) ||
 626                     (abs(mp_coeff[i]) < abs(mp_min))) {
 627                         mp_avg += mp_coeff[i];
 628                         mp_count++;
 629                 }
 630         }
 631
 632         /*
 633          * finding mean magnitude/phase if possible, otherwise
 634          * just use the last value as the mean
 635          */
 636         if (mp_count)
 637                 mp_avg /= mp_count;
 638         else
 639                 mp_avg = mp_coeff[nmeasurement - 1];
 640
 641         /* detect outlier */
 642         if (abs(mp_max - mp_min) > max_delta) {
 643                 if (abs(mp_max - mp_avg) > abs(mp_min - mp_avg))
 644                         outlier_idx = max_idx;
 645                 else
 646                         outlier_idx = min_idx;
 647
 648                 mp_coeff[outlier_idx] = mp_avg;
 649         }
 650 }
 651
 652 static void ar9003_hw_tx_iqcal_load_avg_2_passes(struct ath_hw *ah,
 653                                                  struct coeff *coeff,
 654                                                  bool is_reusable)
 655 {
 656         int i, im, nmeasurement;
 657         u32 tx_corr_coeff[MAX_MEASUREMENT][AR9300_MAX_CHAINS];
 658         struct ath9k_hw_cal_data *caldata = ah->caldata;
 659
 660         memset(tx_corr_coeff, 0, sizeof(tx_corr_coeff));
 661         for (i = 0; i < MAX_MEASUREMENT / 2; i++) {
 662                 tx_corr_coeff[i * 2][0] = tx_corr_coeff[(i * 2) + 1][0] =
 663                                         AR_PHY_TX_IQCAL_CORR_COEFF_B0(i);
 664                 if (!AR_SREV_9485(ah)) {
 665                         tx_corr_coeff[i * 2][1] =
 666                         tx_corr_coeff[(i * 2) + 1][1] =
 667                                         AR_PHY_TX_IQCAL_CORR_COEFF_B1(i);
 668
 669                         tx_corr_coeff[i * 2][2] =
 670                         tx_corr_coeff[(i * 2) + 1][2] =
 671                                         AR_PHY_TX_IQCAL_CORR_COEFF_B2(i);
 672                 }
 673         }
 674
 675         /* Load the average of 2 passes */
 676         for (i = 0; i < AR9300_MAX_CHAINS; i++) {
 677                 if (!(ah->txchainmask & (1 << i)))
 678                         continue;
 679                 nmeasurement = REG_READ_FIELD(ah,
 680                                 AR_PHY_TX_IQCAL_STATUS_B0,
 681                                 AR_PHY_CALIBRATED_GAINS_0);
 682
 683                 if (nmeasurement > MAX_MEASUREMENT)
 684                         nmeasurement = MAX_MEASUREMENT;
 685
 686                 /* detect outlier only if nmeasurement > 1 */
 687                 if (nmeasurement > 1) {
 688                         /* Detect magnitude outlier */
 689                         ar9003_hw_detect_outlier(coeff->mag_coeff[i],
 690                                         nmeasurement, MAX_MAG_DELTA);
 691
 692                         /* Detect phase outlier */
 693                         ar9003_hw_detect_outlier(coeff->phs_coeff[i],
 694                                         nmeasurement, MAX_PHS_DELTA);
 695                 }
 696
 697                 for (im = 0; im < nmeasurement; im++) {
 698
 699                         coeff->iqc_coeff[0] = (coeff->mag_coeff[i][im] & 0x7f) |
 700                                 ((coeff->phs_coeff[i][im] & 0x7f) << 7);
 701
 702                         if ((im % 2) == 0)
 703                                 REG_RMW_FIELD(ah, tx_corr_coeff[im][i],
 704                                         AR_PHY_TX_IQCAL_CORR_COEFF_00_COEFF_TABLE,
 705                                         coeff->iqc_coeff[0]);
 706                         else
 707                                 REG_RMW_FIELD(ah, tx_corr_coeff[im][i],
 708                                         AR_PHY_TX_IQCAL_CORR_COEFF_01_COEFF_TABLE,
 709                                         coeff->iqc_coeff[0]);
 710
 711                         if (caldata)
 712                                 caldata->tx_corr_coeff[im][i] =
 713                                         coeff->iqc_coeff[0];
 714                 }
 715                 if (caldata)
 716                         caldata->num_measures[i] = nmeasurement;
 717         }
 718
 719         REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_3,
 720                       AR_PHY_TX_IQCAL_CONTROL_3_IQCORR_EN, 0x1);
 721         REG_RMW_FIELD(ah, AR_PHY_RX_IQCAL_CORR_B0,
 722                       AR_PHY_RX_IQCAL_CORR_B0_LOOPBACK_IQCORR_EN, 0x1);
 723
 724         if (caldata)
 725                 caldata->done_txiqcal_once = is_reusable;
 726
 727         return;
 728 }
 729
 730 static bool ar9003_hw_tx_iq_cal_run(struct ath_hw *ah)
 731 {
 732         struct ath_common *common = ath9k_hw_common(ah);
 733         u8 tx_gain_forced;
 734
 735         tx_gain_forced = REG_READ_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
 736                                         AR_PHY_TXGAIN_FORCE);
 737         if (tx_gain_forced)
 738                 REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
 739                               AR_PHY_TXGAIN_FORCE, 0);
 740
 741         REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_START,
 742                       AR_PHY_TX_IQCAL_START_DO_CAL, 1);
 743
 744         if (!ath9k_btcoex_ath9k_hw_wait(ah, AR_PHY_TX_IQCAL_START,
 745                         AR_PHY_TX_IQCAL_START_DO_CAL, 0,
 746                         AH_WAIT_TIMEOUT)) {
 747                 ath_dbg(common, CALIBRATE, "Tx IQ Cal is not completed\n");
 748                 return false;
 749         }
 750         return true;
 751 }
 752
 753 static void ar9003_hw_tx_iq_cal_post_proc(struct ath_hw *ah, bool is_reusable)
 754 {
 755         struct ath_common *common = ath9k_hw_common(ah);
 756         const u32 txiqcal_status[AR9300_MAX_CHAINS] = {
 757                 AR_PHY_TX_IQCAL_STATUS_B0,
 758                 AR_PHY_TX_IQCAL_STATUS_B1,
 759                 AR_PHY_TX_IQCAL_STATUS_B2,
 760         };
 761         const u_int32_t chan_info_tab[] = {
 762                 AR_PHY_CHAN_INFO_TAB_0,
 763                 AR_PHY_CHAN_INFO_TAB_1,
 764                 AR_PHY_CHAN_INFO_TAB_2,
 765         };
 766         struct coeff coeff;
 767         s32 iq_res[6];
 768         int i, im, j;
 769         int nmeasurement;
 770
 771         for (i = 0; i < AR9300_MAX_CHAINS; i++) {
 772                 if (!(ah->txchainmask & (1 << i)))
 773                         continue;
 774
 775                 nmeasurement = REG_READ_FIELD(ah,
 776                                 AR_PHY_TX_IQCAL_STATUS_B0,
 777                                 AR_PHY_CALIBRATED_GAINS_0);
 778                 if (nmeasurement > MAX_MEASUREMENT)
 779                         nmeasurement = MAX_MEASUREMENT;
 780
 781                 for (im = 0; im < nmeasurement; im++) {
 782                         ath_dbg(common, CALIBRATE,
 783                                 "Doing Tx IQ Cal for chain %d\n", i);
 784
 785                         if (REG_READ(ah, txiqcal_status[i]) &
 786                                         AR_PHY_TX_IQCAL_STATUS_FAILED) {
 787                                 ath_dbg(common, CALIBRATE,
 788                                         "Tx IQ Cal failed for chain %d\n", i);
 789                                 goto tx_iqcal_fail;
 790                         }
 791
 792                         for (j = 0; j < 3; j++) {
 793                                 u32 idx = 2 * j, offset = 4 * (3 * im + j);
 794
 795                                 REG_RMW_FIELD(ah,
 796                                                 AR_PHY_CHAN_INFO_MEMORY,
 797                                                 AR_PHY_CHAN_INFO_TAB_S2_READ,
 798                                                 0);
 799
 800                                 /* 32 bits */
 801                                 iq_res[idx] = REG_READ(ah,
 802                                                 chan_info_tab[i] +
 803                                                 offset);
 804
 805                                 REG_RMW_FIELD(ah,
 806                                                 AR_PHY_CHAN_INFO_MEMORY,
 807                                                 AR_PHY_CHAN_INFO_TAB_S2_READ,
 808                                                 1);
 809
 810                                 /* 16 bits */
 811                                 iq_res[idx + 1] = 0xffff & REG_READ(ah,
 812                                                 chan_info_tab[i] + offset);
 813
 814                                 ath_dbg(common, CALIBRATE,
 815                                         "IQ_RES[%d]=0x%x IQ_RES[%d]=0x%x\n",
 816                                         idx, iq_res[idx], idx + 1,
 817                                         iq_res[idx + 1]);
 818                         }
 819
 820                         if (!ar9003_hw_calc_iq_corr(ah, i, iq_res,
 821                                                 coeff.iqc_coeff)) {
 822                                 ath_dbg(common, CALIBRATE,
 823                                         "Failed in calculation of IQ correction\n");
 824                                 goto tx_iqcal_fail;
 825                         }
 826
 827                         coeff.mag_coeff[i][im] = coeff.iqc_coeff[0] & 0x7f;
 828                         coeff.phs_coeff[i][im] =
 829                                 (coeff.iqc_coeff[0] >> 7) & 0x7f;
 830
 831                         if (coeff.mag_coeff[i][im] > 63)
 832                                 coeff.mag_coeff[i][im] -= 128;
 833                         if (coeff.phs_coeff[i][im] > 63)
 834                                 coeff.phs_coeff[i][im] -= 128;
 835                 }
 836         }
 837         ar9003_hw_tx_iqcal_load_avg_2_passes(ah, &coeff, is_reusable);
 838
 839         return;
 840
 841 tx_iqcal_fail:
 842         ath_dbg(common, CALIBRATE, "Tx IQ Cal failed\n");
 843         return;
 844 }
 845
 846 static void ar9003_hw_tx_iq_cal_reload(struct ath_hw *ah)
 847 {
 848         struct ath9k_hw_cal_data *caldata = ah->caldata;
 849         u32 tx_corr_coeff[MAX_MEASUREMENT][AR9300_MAX_CHAINS];
 850         int i, im;
 851
 852         memset(tx_corr_coeff, 0, sizeof(tx_corr_coeff));
 853         for (i = 0; i < MAX_MEASUREMENT / 2; i++) {
 854                 tx_corr_coeff[i * 2][0] = tx_corr_coeff[(i * 2) + 1][0] =
 855                                         AR_PHY_TX_IQCAL_CORR_COEFF_B0(i);
 856                 if (!AR_SREV_9485(ah)) {
 857                         tx_corr_coeff[i * 2][1] =
 858                         tx_corr_coeff[(i * 2) + 1][1] =
 859                                         AR_PHY_TX_IQCAL_CORR_COEFF_B1(i);
 860
 861                         tx_corr_coeff[i * 2][2] =
 862                         tx_corr_coeff[(i * 2) + 1][2] =
 863                                         AR_PHY_TX_IQCAL_CORR_COEFF_B2(i);
 864                 }
 865         }
 866
 867         for (i = 0; i < AR9300_MAX_CHAINS; i++) {
 868                 if (!(ah->txchainmask & (1 << i)))
 869                         continue;
 870
 871                 for (im = 0; im < caldata->num_measures[i]; im++) {
 872                         if ((im % 2) == 0)
 873                                 REG_RMW_FIELD(ah, tx_corr_coeff[im][i],
 874                                      AR_PHY_TX_IQCAL_CORR_COEFF_00_COEFF_TABLE,
 875                                      caldata->tx_corr_coeff[im][i]);
 876                         else
 877                                 REG_RMW_FIELD(ah, tx_corr_coeff[im][i],
 878                                      AR_PHY_TX_IQCAL_CORR_COEFF_01_COEFF_TABLE,
 879                                      caldata->tx_corr_coeff[im][i]);
 880                 }
 881         }
 882
 883         REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_3,
 884                       AR_PHY_TX_IQCAL_CONTROL_3_IQCORR_EN, 0x1);
 885         REG_RMW_FIELD(ah, AR_PHY_RX_IQCAL_CORR_B0,
 886                       AR_PHY_RX_IQCAL_CORR_B0_LOOPBACK_IQCORR_EN, 0x1);
 887 }
 888
 889 static bool ar9003_hw_init_cal(struct ath_hw *ah,
 890                                struct ath9k_channel *chan)
 891 {
 892         struct ath_common *common = ath9k_hw_common(ah);
 893         struct ath9k_hw_cal_data *caldata = ah->caldata;
 894         bool txiqcal_done = false, txclcal_done = false;
 895         bool is_reusable = true, status = true;
 896         bool run_rtt_cal = false, run_agc_cal;
 897         bool rtt = !!(ah->caps.hw_caps & ATH9K_HW_CAP_RTT);
 898         u32 agc_ctrl = 0, agc_supp_cals = AR_PHY_AGC_CONTROL_OFFSET_CAL |
 899                                           AR_PHY_AGC_CONTROL_FLTR_CAL   |
 900                                           AR_PHY_AGC_CONTROL_PKDET_CAL;
 901         int i, j;
 902         u32 cl_idx[AR9300_MAX_CHAINS] = { AR_PHY_CL_TAB_0,
 903                                           AR_PHY_CL_TAB_1,
 904                                           AR_PHY_CL_TAB_2 };
 905
 906         if (rtt) {
 907                 if (!ar9003_hw_rtt_restore(ah, chan))
 908                         run_rtt_cal = true;
 909
 910                 if (run_rtt_cal)
 911                         ath_dbg(common, CALIBRATE,
 912                                 "RTT calibration to be done\n");
 913         }
 914
 915         run_agc_cal = run_rtt_cal;
 916
 917         if (run_rtt_cal) {
 918                 ar9003_hw_rtt_enable(ah);
 919                 ar9003_hw_rtt_set_mask(ah, 0x00);
 920                 ar9003_hw_rtt_clear_hist(ah);
 921         }
 922
 923         if (rtt && !run_rtt_cal) {
 924                 agc_ctrl = REG_READ(ah, AR_PHY_AGC_CONTROL);
 925                 agc_supp_cals &= agc_ctrl;
 926                 agc_ctrl &= ~(AR_PHY_AGC_CONTROL_OFFSET_CAL |
 927                              AR_PHY_AGC_CONTROL_FLTR_CAL |
 928                              AR_PHY_AGC_CONTROL_PKDET_CAL);
 929                 REG_WRITE(ah, AR_PHY_AGC_CONTROL, agc_ctrl);
 930         }
 931
 932         if (ah->enabled_cals & TX_CL_CAL) {
 933                 if (caldata && caldata->done_txclcal_once)
 934                         REG_CLR_BIT(ah, AR_PHY_CL_CAL_CTL,
 935                                     AR_PHY_CL_CAL_ENABLE);
 936                 else {
 937                         REG_SET_BIT(ah, AR_PHY_CL_CAL_CTL,
 938                                     AR_PHY_CL_CAL_ENABLE);
 939                         run_agc_cal = true;
 940                 }
 941         }
 942
 943         if (!(ah->enabled_cals & TX_IQ_CAL))
 944                 goto skip_tx_iqcal;
 945
 946         /* Do Tx IQ Calibration */
 947         REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_1,
 948                       AR_PHY_TX_IQCAL_CONTROL_1_IQCORR_I_Q_COFF_DELPT,
 949                       DELPT);
 950
 951         /*
 952          * For AR9485 or later chips, TxIQ cal runs as part of
 953          * AGC calibration
 954          */
 955         if (ah->enabled_cals & TX_IQ_ON_AGC_CAL) {
 956                 if (caldata && !caldata->done_txiqcal_once)
 957                         REG_SET_BIT(ah, AR_PHY_TX_IQCAL_CONTROL_0,
 958                                     AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL);
 959                 else
 960                         REG_CLR_BIT(ah, AR_PHY_TX_IQCAL_CONTROL_0,
 961                                     AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL);
 962                 txiqcal_done = run_agc_cal = true;
 963                 goto skip_tx_iqcal;
 964         } else if (caldata && !caldata->done_txiqcal_once)
 965                 run_agc_cal = true;
 966
 967         if (ath9k_hw_mci_is_enabled(ah) && IS_CHAN_2GHZ(chan) && run_agc_cal)
 968                 ar9003_mci_init_cal_req(ah, &is_reusable);
 969
 970         txiqcal_done = ar9003_hw_tx_iq_cal_run(ah);
 971         REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_DIS);
 972         udelay(5);
 973         REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);
 974
 975 skip_tx_iqcal:
 976         if (run_agc_cal || !(ah->ah_flags & AH_FASTCC)) {
 977                 /* Calibrate the AGC */
 978                 REG_WRITE(ah, AR_PHY_AGC_CONTROL,
 979                           REG_READ(ah, AR_PHY_AGC_CONTROL) |
 980                           AR_PHY_AGC_CONTROL_CAL);
 981
 982                 /* Poll for offset calibration complete */
 983                 status = ath9k_btcoex_ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL,
 984                                        AR_PHY_AGC_CONTROL_CAL,
 985                                        0, AH_WAIT_TIMEOUT);
 986         }
 987
 988         if (ath9k_hw_mci_is_enabled(ah) && IS_CHAN_2GHZ(chan) && run_agc_cal)
 989                 ar9003_mci_init_cal_done(ah);
 990
 991         if (rtt && !run_rtt_cal) {
 992                 agc_ctrl |= agc_supp_cals;
 993                 REG_WRITE(ah, AR_PHY_AGC_CONTROL, agc_ctrl);
 994         }
 995
 996         if (!status) {
 997                 if (run_rtt_cal)
 998                         ar9003_hw_rtt_disable(ah);
 999
1000                 ath_dbg(common, CALIBRATE,
1001                         "offset calibration failed to complete in 1ms; noisy environment?\n");
1002                 return false;
1003         }
1004
1005         if (txiqcal_done)
1006                 ar9003_hw_tx_iq_cal_post_proc(ah, is_reusable);
1007         else if (caldata && caldata->done_txiqcal_once)
1008                 ar9003_hw_tx_iq_cal_reload(ah);
1009
1010 #define CL_TAB_ENTRY(reg_base)  (reg_base + (4 * j))
1011         if (caldata && (ah->enabled_cals & TX_CL_CAL)) {
1012                 txclcal_done = !!(REG_READ(ah, AR_PHY_AGC_CONTROL) &
1013                                            AR_PHY_AGC_CONTROL_CLC_SUCCESS);
1014                 if (caldata->done_txclcal_once) {
1015                         for (i = 0; i < AR9300_MAX_CHAINS; i++) {
1016                                 if (!(ah->txchainmask & (1 << i)))
1017                                         continue;
1018                                 for (j = 0; j < MAX_CL_TAB_ENTRY; j++)
1019                                         REG_WRITE(ah, CL_TAB_ENTRY(cl_idx[i]),
1020                                                   caldata->tx_clcal[i][j]);
1021                         }
1022                 } else if (is_reusable && txclcal_done) {
1023                         for (i = 0; i < AR9300_MAX_CHAINS; i++) {
1024                                 if (!(ah->txchainmask & (1 << i)))
1025                                         continue;
1026                                 for (j = 0; j < MAX_CL_TAB_ENTRY; j++)
1027                                         caldata->tx_clcal[i][j] =
1028                                                 REG_READ(ah,
1029                                                   CL_TAB_ENTRY(cl_idx[i]));
1030                         }
1031                         caldata->done_txclcal_once = true;
1032                 }
1033         }
1034 #undef CL_TAB_ENTRY
1035
1036         if (run_rtt_cal && caldata) {
1037                 if (is_reusable) {
1038                         if (!ath9k_hw_rfbus_req(ah))
1039                                 ath_err(ath9k_hw_common(ah),
1040                                         "Could not stop baseband\n");
1041                         else
1042                                 ar9003_hw_rtt_fill_hist(ah);
1043
1044                         ath9k_hw_rfbus_done(ah);
1045                 }
1046
1047                 ar9003_hw_rtt_disable(ah);
1048         }
1049
1050         /* Initialize list pointers */
1051         ah->cal_list = ah->cal_list_last = ah->cal_list_curr = NULL;
1052         ah->supp_cals = IQ_MISMATCH_CAL;
1053
1054         if (ah->supp_cals & IQ_MISMATCH_CAL) {
1055                 INIT_CAL(&ah->iq_caldata);
1056                 INSERT_CAL(ah, &ah->iq_caldata);
1057                 ath_dbg(common, CALIBRATE, "enabling IQ Calibration\n");
1058         }
1059
1060         if (ah->supp_cals & TEMP_COMP_CAL) {
1061                 INIT_CAL(&ah->tempCompCalData);
1062                 INSERT_CAL(ah, &ah->tempCompCalData);
1063                 ath_dbg(common, CALIBRATE,
1064                         "enabling Temperature Compensation Calibration\n");
1065         }
1066
1067         /* Initialize current pointer to first element in list */
1068         ah->cal_list_curr = ah->cal_list;
1069
1070         if (ah->cal_list_curr)
1071                 ath9k_hw_reset_calibration(ah, ah->cal_list_curr);
1072
1073         if (caldata)
1074                 caldata->CalValid = 0;
1075
1076         return true;
1077 }
1078
1079 void ar9003_hw_attach_calib_ops(struct ath_hw *ah)
1080 {
1081         struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah);
1082         struct ath_hw_ops *ops = ath9k_hw_ops(ah);
1083
1084         priv_ops->init_cal_settings = ar9003_hw_init_cal_settings;
1085         priv_ops->init_cal = ar9003_hw_init_cal;
1086         priv_ops->setup_calibration = ar9003_hw_setup_calibration;
1087
1088         ops->calibrate = ar9003_hw_calibrate;
1089 }