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 /* Do NF cal only at longer intervals */ 163 if (longcal) { 164 /* 165 * Get the value from the previous NF cal and update 166 * history buffer. 167 */ 168 ath9k_hw_getnf(ah, chan); 169 170 /* 171 * Load the NF from history buffer of the current channel. 172 * NF is slow time-variant, so it is OK to use a historical 173 * value. 174 */ 175 ath9k_hw_loadnf(ah, ah->curchan); 176 177 /* start NF calibration, without updating BB NF register */ 178 ath9k_hw_start_nfcal(ah, false); 179 } 180 181 return iscaldone; 182 } 183 184 static void ar9003_hw_iqcal_collect(struct ath_hw *ah) 185 { 186 int i; 187 188 /* Accumulate IQ cal measures for active chains */ 189 for (i = 0; i < AR5416_MAX_CHAINS; i++) { 190 if (ah->txchainmask & BIT(i)) { 191 ah->totalPowerMeasI[i] += 192 REG_READ(ah, AR_PHY_CAL_MEAS_0(i)); 193 ah->totalPowerMeasQ[i] += 194 REG_READ(ah, AR_PHY_CAL_MEAS_1(i)); 195 ah->totalIqCorrMeas[i] += 196 (int32_t) REG_READ(ah, AR_PHY_CAL_MEAS_2(i)); 197 ath_dbg(ath9k_hw_common(ah), CALIBRATE, 198 "%d: Chn %d pmi=0x%08x;pmq=0x%08x;iqcm=0x%08x;\n", 199 ah->cal_samples, i, ah->totalPowerMeasI[i], 200 ah->totalPowerMeasQ[i], 201 ah->totalIqCorrMeas[i]); 202 } 203 } 204 } 205 206 static void ar9003_hw_iqcalibrate(struct ath_hw *ah, u8 numChains) 207 { 208 struct ath_common *common = ath9k_hw_common(ah); 209 u32 powerMeasQ, powerMeasI, iqCorrMeas; 210 u32 qCoffDenom, iCoffDenom; 211 int32_t qCoff, iCoff; 212 int iqCorrNeg, i; 213 static const u_int32_t offset_array[3] = { 214 AR_PHY_RX_IQCAL_CORR_B0, 215 AR_PHY_RX_IQCAL_CORR_B1, 216 AR_PHY_RX_IQCAL_CORR_B2, 217 }; 218 219 for (i = 0; i < numChains; i++) { 220 powerMeasI = ah->totalPowerMeasI[i]; 221 powerMeasQ = ah->totalPowerMeasQ[i]; 222 iqCorrMeas = ah->totalIqCorrMeas[i]; 223 224 ath_dbg(common, CALIBRATE, 225 "Starting IQ Cal and Correction for Chain %d\n", i); 226 227 ath_dbg(common, CALIBRATE, 228 "Original: Chn %d iq_corr_meas = 0x%08x\n", 229 i, ah->totalIqCorrMeas[i]); 230 231 iqCorrNeg = 0; 232 233 if (iqCorrMeas > 0x80000000) { 234 iqCorrMeas = (0xffffffff - iqCorrMeas) + 1; 235 iqCorrNeg = 1; 236 } 237 238 ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_i = 0x%08x\n", 239 i, powerMeasI); 240 ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_q = 0x%08x\n", 241 i, powerMeasQ); 242 ath_dbg(common, CALIBRATE, "iqCorrNeg is 0x%08x\n", iqCorrNeg); 243 244 iCoffDenom = (powerMeasI / 2 + powerMeasQ / 2) / 256; 245 qCoffDenom = powerMeasQ / 64; 246 247 if ((iCoffDenom != 0) && (qCoffDenom != 0)) { 248 iCoff = iqCorrMeas / iCoffDenom; 249 qCoff = powerMeasI / qCoffDenom - 64; 250 ath_dbg(common, CALIBRATE, "Chn %d iCoff = 0x%08x\n", 251 i, iCoff); 252 ath_dbg(common, CALIBRATE, "Chn %d qCoff = 0x%08x\n", 253 i, qCoff); 254 255 /* Force bounds on iCoff */ 256 if (iCoff >= 63) 257 iCoff = 63; 258 else if (iCoff <= -63) 259 iCoff = -63; 260 261 /* Negate iCoff if iqCorrNeg == 0 */ 262 if (iqCorrNeg == 0x0) 263 iCoff = -iCoff; 264 265 /* Force bounds on qCoff */ 266 if (qCoff >= 63) 267 qCoff = 63; 268 else if (qCoff <= -63) 269 qCoff = -63; 270 271 iCoff = iCoff & 0x7f; 272 qCoff = qCoff & 0x7f; 273 274 ath_dbg(common, CALIBRATE, 275 "Chn %d : iCoff = 0x%x qCoff = 0x%x\n", 276 i, iCoff, qCoff); 277 ath_dbg(common, CALIBRATE, 278 "Register offset (0x%04x) before update = 0x%x\n", 279 offset_array[i], 280 REG_READ(ah, offset_array[i])); 281 282 REG_RMW_FIELD(ah, offset_array[i], 283 AR_PHY_RX_IQCAL_CORR_IQCORR_Q_I_COFF, 284 iCoff); 285 REG_RMW_FIELD(ah, offset_array[i], 286 AR_PHY_RX_IQCAL_CORR_IQCORR_Q_Q_COFF, 287 qCoff); 288 ath_dbg(common, CALIBRATE, 289 "Register offset (0x%04x) QI COFF (bitfields 0x%08x) after update = 0x%x\n", 290 offset_array[i], 291 AR_PHY_RX_IQCAL_CORR_IQCORR_Q_I_COFF, 292 REG_READ(ah, offset_array[i])); 293 ath_dbg(common, CALIBRATE, 294 "Register offset (0x%04x) QQ COFF (bitfields 0x%08x) after update = 0x%x\n", 295 offset_array[i], 296 AR_PHY_RX_IQCAL_CORR_IQCORR_Q_Q_COFF, 297 REG_READ(ah, offset_array[i])); 298 299 ath_dbg(common, CALIBRATE, 300 "IQ Cal and Correction done for Chain %d\n", i); 301 } 302 } 303 304 REG_SET_BIT(ah, AR_PHY_RX_IQCAL_CORR_B0, 305 AR_PHY_RX_IQCAL_CORR_IQCORR_ENABLE); 306 ath_dbg(common, CALIBRATE, 307 "IQ Cal and Correction (offset 0x%04x) enabled (bit position 0x%08x). New Value 0x%08x\n", 308 (unsigned) (AR_PHY_RX_IQCAL_CORR_B0), 309 AR_PHY_RX_IQCAL_CORR_IQCORR_ENABLE, 310 REG_READ(ah, AR_PHY_RX_IQCAL_CORR_B0)); 311 } 312 313 static const struct ath9k_percal_data iq_cal_single_sample = { 314 IQ_MISMATCH_CAL, 315 MIN_CAL_SAMPLES, 316 PER_MAX_LOG_COUNT, 317 ar9003_hw_iqcal_collect, 318 ar9003_hw_iqcalibrate 319 }; 320 321 static void ar9003_hw_init_cal_settings(struct ath_hw *ah) 322 { 323 ah->iq_caldata.calData = &iq_cal_single_sample; 324 } 325 326 /* 327 * solve 4x4 linear equation used in loopback iq cal. 328 */ 329 static bool ar9003_hw_solve_iq_cal(struct ath_hw *ah, 330 s32 sin_2phi_1, 331 s32 cos_2phi_1, 332 s32 sin_2phi_2, 333 s32 cos_2phi_2, 334 s32 mag_a0_d0, 335 s32 phs_a0_d0, 336 s32 mag_a1_d0, 337 s32 phs_a1_d0, 338 s32 solved_eq[]) 339 { 340 s32 f1 = cos_2phi_1 - cos_2phi_2, 341 f3 = sin_2phi_1 - sin_2phi_2, 342 f2; 343 s32 mag_tx, phs_tx, mag_rx, phs_rx; 344 const s32 result_shift = 1 << 15; 345 struct ath_common *common = ath9k_hw_common(ah); 346 347 f2 = (f1 * f1 + f3 * f3) / result_shift; 348 349 if (!f2) { 350 ath_dbg(common, CALIBRATE, "Divide by 0\n"); 351 return false; 352 } 353 354 /* mag mismatch, tx */ 355 mag_tx = f1 * (mag_a0_d0 - mag_a1_d0) + f3 * (phs_a0_d0 - phs_a1_d0); 356 /* phs mismatch, tx */ 357 phs_tx = f3 * (-mag_a0_d0 + mag_a1_d0) + f1 * (phs_a0_d0 - phs_a1_d0); 358 359 mag_tx = (mag_tx / f2); 360 phs_tx = (phs_tx / f2); 361 362 /* mag mismatch, rx */ 363 mag_rx = mag_a0_d0 - (cos_2phi_1 * mag_tx + sin_2phi_1 * phs_tx) / 364 result_shift; 365 /* phs mismatch, rx */ 366 phs_rx = phs_a0_d0 + (sin_2phi_1 * mag_tx - cos_2phi_1 * phs_tx) / 367 result_shift; 368 369 solved_eq[0] = mag_tx; 370 solved_eq[1] = phs_tx; 371 solved_eq[2] = mag_rx; 372 solved_eq[3] = phs_rx; 373 374 return true; 375 } 376 377 static s32 ar9003_hw_find_mag_approx(struct ath_hw *ah, s32 in_re, s32 in_im) 378 { 379 s32 abs_i = abs(in_re), 380 abs_q = abs(in_im), 381 max_abs, min_abs; 382 383 if (abs_i > abs_q) { 384 max_abs = abs_i; 385 min_abs = abs_q; 386 } else { 387 max_abs = abs_q; 388 min_abs = abs_i; 389 } 390 391 return max_abs - (max_abs / 32) + (min_abs / 8) + (min_abs / 4); 392 } 393 394 #define DELPT 32 395 396 static bool ar9003_hw_calc_iq_corr(struct ath_hw *ah, 397 s32 chain_idx, 398 const s32 iq_res[], 399 s32 iqc_coeff[]) 400 { 401 s32 i2_m_q2_a0_d0, i2_p_q2_a0_d0, iq_corr_a0_d0, 402 i2_m_q2_a0_d1, i2_p_q2_a0_d1, iq_corr_a0_d1, 403 i2_m_q2_a1_d0, i2_p_q2_a1_d0, iq_corr_a1_d0, 404 i2_m_q2_a1_d1, i2_p_q2_a1_d1, iq_corr_a1_d1; 405 s32 mag_a0_d0, mag_a1_d0, mag_a0_d1, mag_a1_d1, 406 phs_a0_d0, phs_a1_d0, phs_a0_d1, phs_a1_d1, 407 sin_2phi_1, cos_2phi_1, 408 sin_2phi_2, cos_2phi_2; 409 s32 mag_tx, phs_tx, mag_rx, phs_rx; 410 s32 solved_eq[4], mag_corr_tx, phs_corr_tx, mag_corr_rx, phs_corr_rx, 411 q_q_coff, q_i_coff; 412 const s32 res_scale = 1 << 15; 413 const s32 delpt_shift = 1 << 8; 414 s32 mag1, mag2; 415 struct ath_common *common = ath9k_hw_common(ah); 416 417 i2_m_q2_a0_d0 = iq_res[0] & 0xfff; 418 i2_p_q2_a0_d0 = (iq_res[0] >> 12) & 0xfff; 419 iq_corr_a0_d0 = ((iq_res[0] >> 24) & 0xff) + ((iq_res[1] & 0xf) << 8); 420 421 if (i2_m_q2_a0_d0 > 0x800) 422 i2_m_q2_a0_d0 = -((0xfff - i2_m_q2_a0_d0) + 1); 423 424 if (i2_p_q2_a0_d0 > 0x800) 425 i2_p_q2_a0_d0 = -((0xfff - i2_p_q2_a0_d0) + 1); 426 427 if (iq_corr_a0_d0 > 0x800) 428 iq_corr_a0_d0 = -((0xfff - iq_corr_a0_d0) + 1); 429 430 i2_m_q2_a0_d1 = (iq_res[1] >> 4) & 0xfff; 431 i2_p_q2_a0_d1 = (iq_res[2] & 0xfff); 432 iq_corr_a0_d1 = (iq_res[2] >> 12) & 0xfff; 433 434 if (i2_m_q2_a0_d1 > 0x800) 435 i2_m_q2_a0_d1 = -((0xfff - i2_m_q2_a0_d1) + 1); 436 437 if (i2_p_q2_a0_d1 > 0x800) 438 i2_p_q2_a0_d1 = -((0xfff - i2_p_q2_a0_d1) + 1); 439 440 if (iq_corr_a0_d1 > 0x800) 441 iq_corr_a0_d1 = -((0xfff - iq_corr_a0_d1) + 1); 442 443 i2_m_q2_a1_d0 = ((iq_res[2] >> 24) & 0xff) + ((iq_res[3] & 0xf) << 8); 444 i2_p_q2_a1_d0 = (iq_res[3] >> 4) & 0xfff; 445 iq_corr_a1_d0 = iq_res[4] & 0xfff; 446 447 if (i2_m_q2_a1_d0 > 0x800) 448 i2_m_q2_a1_d0 = -((0xfff - i2_m_q2_a1_d0) + 1); 449 450 if (i2_p_q2_a1_d0 > 0x800) 451 i2_p_q2_a1_d0 = -((0xfff - i2_p_q2_a1_d0) + 1); 452 453 if (iq_corr_a1_d0 > 0x800) 454 iq_corr_a1_d0 = -((0xfff - iq_corr_a1_d0) + 1); 455 456 i2_m_q2_a1_d1 = (iq_res[4] >> 12) & 0xfff; 457 i2_p_q2_a1_d1 = ((iq_res[4] >> 24) & 0xff) + ((iq_res[5] & 0xf) << 8); 458 iq_corr_a1_d1 = (iq_res[5] >> 4) & 0xfff; 459 460 if (i2_m_q2_a1_d1 > 0x800) 461 i2_m_q2_a1_d1 = -((0xfff - i2_m_q2_a1_d1) + 1); 462 463 if (i2_p_q2_a1_d1 > 0x800) 464 i2_p_q2_a1_d1 = -((0xfff - i2_p_q2_a1_d1) + 1); 465 466 if (iq_corr_a1_d1 > 0x800) 467 iq_corr_a1_d1 = -((0xfff - iq_corr_a1_d1) + 1); 468 469 if ((i2_p_q2_a0_d0 == 0) || (i2_p_q2_a0_d1 == 0) || 470 (i2_p_q2_a1_d0 == 0) || (i2_p_q2_a1_d1 == 0)) { 471 ath_dbg(common, CALIBRATE, 472 "Divide by 0:\n" 473 "a0_d0=%d\n" 474 "a0_d1=%d\n" 475 "a2_d0=%d\n" 476 "a1_d1=%d\n", 477 i2_p_q2_a0_d0, i2_p_q2_a0_d1, 478 i2_p_q2_a1_d0, i2_p_q2_a1_d1); 479 return false; 480 } 481 482 mag_a0_d0 = (i2_m_q2_a0_d0 * res_scale) / i2_p_q2_a0_d0; 483 phs_a0_d0 = (iq_corr_a0_d0 * res_scale) / i2_p_q2_a0_d0; 484 485 mag_a0_d1 = (i2_m_q2_a0_d1 * res_scale) / i2_p_q2_a0_d1; 486 phs_a0_d1 = (iq_corr_a0_d1 * res_scale) / i2_p_q2_a0_d1; 487 488 mag_a1_d0 = (i2_m_q2_a1_d0 * res_scale) / i2_p_q2_a1_d0; 489 phs_a1_d0 = (iq_corr_a1_d0 * res_scale) / i2_p_q2_a1_d0; 490 491 mag_a1_d1 = (i2_m_q2_a1_d1 * res_scale) / i2_p_q2_a1_d1; 492 phs_a1_d1 = (iq_corr_a1_d1 * res_scale) / i2_p_q2_a1_d1; 493 494 /* w/o analog phase shift */ 495 sin_2phi_1 = (((mag_a0_d0 - mag_a0_d1) * delpt_shift) / DELPT); 496 /* w/o analog phase shift */ 497 cos_2phi_1 = (((phs_a0_d1 - phs_a0_d0) * delpt_shift) / DELPT); 498 /* w/ analog phase shift */ 499 sin_2phi_2 = (((mag_a1_d0 - mag_a1_d1) * delpt_shift) / DELPT); 500 /* w/ analog phase shift */ 501 cos_2phi_2 = (((phs_a1_d1 - phs_a1_d0) * delpt_shift) / DELPT); 502 503 /* 504 * force sin^2 + cos^2 = 1; 505 * find magnitude by approximation 506 */ 507 mag1 = ar9003_hw_find_mag_approx(ah, cos_2phi_1, sin_2phi_1); 508 mag2 = ar9003_hw_find_mag_approx(ah, cos_2phi_2, sin_2phi_2); 509 510 if ((mag1 == 0) || (mag2 == 0)) { 511 ath_dbg(common, CALIBRATE, "Divide by 0: mag1=%d, mag2=%d\n", 512 mag1, mag2); 513 return false; 514 } 515 516 /* normalization sin and cos by mag */ 517 sin_2phi_1 = (sin_2phi_1 * res_scale / mag1); 518 cos_2phi_1 = (cos_2phi_1 * res_scale / mag1); 519 sin_2phi_2 = (sin_2phi_2 * res_scale / mag2); 520 cos_2phi_2 = (cos_2phi_2 * res_scale / mag2); 521 522 /* calculate IQ mismatch */ 523 if (!ar9003_hw_solve_iq_cal(ah, 524 sin_2phi_1, cos_2phi_1, 525 sin_2phi_2, cos_2phi_2, 526 mag_a0_d0, phs_a0_d0, 527 mag_a1_d0, 528 phs_a1_d0, solved_eq)) { 529 ath_dbg(common, CALIBRATE, 530 "Call to ar9003_hw_solve_iq_cal() failed\n"); 531 return false; 532 } 533 534 mag_tx = solved_eq[0]; 535 phs_tx = solved_eq[1]; 536 mag_rx = solved_eq[2]; 537 phs_rx = solved_eq[3]; 538 539 ath_dbg(common, CALIBRATE, 540 "chain %d: mag mismatch=%d phase mismatch=%d\n", 541 chain_idx, mag_tx/res_scale, phs_tx/res_scale); 542 543 if (res_scale == mag_tx) { 544 ath_dbg(common, CALIBRATE, 545 "Divide by 0: mag_tx=%d, res_scale=%d\n", 546 mag_tx, res_scale); 547 return false; 548 } 549 550 /* calculate and quantize Tx IQ correction factor */ 551 mag_corr_tx = (mag_tx * res_scale) / (res_scale - mag_tx); 552 phs_corr_tx = -phs_tx; 553 554 q_q_coff = (mag_corr_tx * 128 / res_scale); 555 q_i_coff = (phs_corr_tx * 256 / res_scale); 556 557 ath_dbg(common, CALIBRATE, "tx chain %d: mag corr=%d phase corr=%d\n", 558 chain_idx, q_q_coff, q_i_coff); 559 560 if (q_i_coff < -63) 561 q_i_coff = -63; 562 if (q_i_coff > 63) 563 q_i_coff = 63; 564 if (q_q_coff < -63) 565 q_q_coff = -63; 566 if (q_q_coff > 63) 567 q_q_coff = 63; 568 569 iqc_coeff[0] = (q_q_coff * 128) + q_i_coff; 570 571 ath_dbg(common, CALIBRATE, "tx chain %d: iq corr coeff=%x\n", 572 chain_idx, iqc_coeff[0]); 573 574 if (-mag_rx == res_scale) { 575 ath_dbg(common, CALIBRATE, 576 "Divide by 0: mag_rx=%d, res_scale=%d\n", 577 mag_rx, res_scale); 578 return false; 579 } 580 581 /* calculate and quantize Rx IQ correction factors */ 582 mag_corr_rx = (-mag_rx * res_scale) / (res_scale + mag_rx); 583 phs_corr_rx = -phs_rx; 584 585 q_q_coff = (mag_corr_rx * 128 / res_scale); 586 q_i_coff = (phs_corr_rx * 256 / res_scale); 587 588 ath_dbg(common, CALIBRATE, "rx chain %d: mag corr=%d phase corr=%d\n", 589 chain_idx, q_q_coff, q_i_coff); 590 591 if (q_i_coff < -63) 592 q_i_coff = -63; 593 if (q_i_coff > 63) 594 q_i_coff = 63; 595 if (q_q_coff < -63) 596 q_q_coff = -63; 597 if (q_q_coff > 63) 598 q_q_coff = 63; 599 600 iqc_coeff[1] = (q_q_coff * 128) + q_i_coff; 601 602 ath_dbg(common, CALIBRATE, "rx chain %d: iq corr coeff=%x\n", 603 chain_idx, iqc_coeff[1]); 604 605 return true; 606 } 607 608 static void ar9003_hw_detect_outlier(int *mp_coeff, int nmeasurement, 609 int max_delta) 610 { 611 int mp_max = -64, max_idx = 0; 612 int mp_min = 63, min_idx = 0; 613 int mp_avg = 0, i, outlier_idx = 0, mp_count = 0; 614 615 /* find min/max mismatch across all calibrated gains */ 616 for (i = 0; i < nmeasurement; i++) { 617 if (mp_coeff[i] > mp_max) { 618 mp_max = mp_coeff[i]; 619 max_idx = i; 620 } else if (mp_coeff[i] < mp_min) { 621 mp_min = mp_coeff[i]; 622 min_idx = i; 623 } 624 } 625 626 /* find average (exclude max abs value) */ 627 for (i = 0; i < nmeasurement; i++) { 628 if ((abs(mp_coeff[i]) < abs(mp_max)) || 629 (abs(mp_coeff[i]) < abs(mp_min))) { 630 mp_avg += mp_coeff[i]; 631 mp_count++; 632 } 633 } 634 635 /* 636 * finding mean magnitude/phase if possible, otherwise 637 * just use the last value as the mean 638 */ 639 if (mp_count) 640 mp_avg /= mp_count; 641 else 642 mp_avg = mp_coeff[nmeasurement - 1]; 643 644 /* detect outlier */ 645 if (abs(mp_max - mp_min) > max_delta) { 646 if (abs(mp_max - mp_avg) > abs(mp_min - mp_avg)) 647 outlier_idx = max_idx; 648 else 649 outlier_idx = min_idx; 650 651 mp_coeff[outlier_idx] = mp_avg; 652 } 653 } 654 655 static void ar9003_hw_tx_iqcal_load_avg_2_passes(struct ath_hw *ah, 656 u8 num_chains, 657 struct coeff *coeff, 658 bool is_reusable) 659 { 660 int i, im, nmeasurement; 661 u32 tx_corr_coeff[MAX_MEASUREMENT][AR9300_MAX_CHAINS]; 662 struct ath9k_hw_cal_data *caldata = ah->caldata; 663 664 memset(tx_corr_coeff, 0, sizeof(tx_corr_coeff)); 665 for (i = 0; i < MAX_MEASUREMENT / 2; i++) { 666 tx_corr_coeff[i * 2][0] = tx_corr_coeff[(i * 2) + 1][0] = 667 AR_PHY_TX_IQCAL_CORR_COEFF_B0(i); 668 if (!AR_SREV_9485(ah)) { 669 tx_corr_coeff[i * 2][1] = 670 tx_corr_coeff[(i * 2) + 1][1] = 671 AR_PHY_TX_IQCAL_CORR_COEFF_B1(i); 672 673 tx_corr_coeff[i * 2][2] = 674 tx_corr_coeff[(i * 2) + 1][2] = 675 AR_PHY_TX_IQCAL_CORR_COEFF_B2(i); 676 } 677 } 678 679 /* Load the average of 2 passes */ 680 for (i = 0; i < num_chains; i++) { 681 nmeasurement = REG_READ_FIELD(ah, 682 AR_PHY_TX_IQCAL_STATUS_B0, 683 AR_PHY_CALIBRATED_GAINS_0); 684 685 if (nmeasurement > MAX_MEASUREMENT) 686 nmeasurement = MAX_MEASUREMENT; 687 688 /* detect outlier only if nmeasurement > 1 */ 689 if (nmeasurement > 1) { 690 /* Detect magnitude outlier */ 691 ar9003_hw_detect_outlier(coeff->mag_coeff[i], 692 nmeasurement, MAX_MAG_DELTA); 693 694 /* Detect phase outlier */ 695 ar9003_hw_detect_outlier(coeff->phs_coeff[i], 696 nmeasurement, MAX_PHS_DELTA); 697 } 698 699 for (im = 0; im < nmeasurement; im++) { 700 701 coeff->iqc_coeff[0] = (coeff->mag_coeff[i][im] & 0x7f) | 702 ((coeff->phs_coeff[i][im] & 0x7f) << 7); 703 704 if ((im % 2) == 0) 705 REG_RMW_FIELD(ah, tx_corr_coeff[im][i], 706 AR_PHY_TX_IQCAL_CORR_COEFF_00_COEFF_TABLE, 707 coeff->iqc_coeff[0]); 708 else 709 REG_RMW_FIELD(ah, tx_corr_coeff[im][i], 710 AR_PHY_TX_IQCAL_CORR_COEFF_01_COEFF_TABLE, 711 coeff->iqc_coeff[0]); 712 713 if (caldata) 714 caldata->tx_corr_coeff[im][i] = 715 coeff->iqc_coeff[0]; 716 } 717 if (caldata) 718 caldata->num_measures[i] = nmeasurement; 719 } 720 721 REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_3, 722 AR_PHY_TX_IQCAL_CONTROL_3_IQCORR_EN, 0x1); 723 REG_RMW_FIELD(ah, AR_PHY_RX_IQCAL_CORR_B0, 724 AR_PHY_RX_IQCAL_CORR_B0_LOOPBACK_IQCORR_EN, 0x1); 725 726 if (caldata) 727 caldata->done_txiqcal_once = is_reusable; 728 729 return; 730 } 731 732 static bool ar9003_hw_tx_iq_cal_run(struct ath_hw *ah) 733 { 734 struct ath_common *common = ath9k_hw_common(ah); 735 u8 tx_gain_forced; 736 737 tx_gain_forced = REG_READ_FIELD(ah, AR_PHY_TX_FORCED_GAIN, 738 AR_PHY_TXGAIN_FORCE); 739 if (tx_gain_forced) 740 REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN, 741 AR_PHY_TXGAIN_FORCE, 0); 742 743 REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_START, 744 AR_PHY_TX_IQCAL_START_DO_CAL, 1); 745 746 if (!ath9k_hw_wait(ah, AR_PHY_TX_IQCAL_START, 747 AR_PHY_TX_IQCAL_START_DO_CAL, 0, 748 AH_WAIT_TIMEOUT)) { 749 ath_dbg(common, CALIBRATE, "Tx IQ Cal is not completed\n"); 750 return false; 751 } 752 return true; 753 } 754 755 static void ar9003_hw_tx_iq_cal_post_proc(struct ath_hw *ah, bool is_reusable) 756 { 757 struct ath_common *common = ath9k_hw_common(ah); 758 const u32 txiqcal_status[AR9300_MAX_CHAINS] = { 759 AR_PHY_TX_IQCAL_STATUS_B0, 760 AR_PHY_TX_IQCAL_STATUS_B1, 761 AR_PHY_TX_IQCAL_STATUS_B2, 762 }; 763 const u_int32_t chan_info_tab[] = { 764 AR_PHY_CHAN_INFO_TAB_0, 765 AR_PHY_CHAN_INFO_TAB_1, 766 AR_PHY_CHAN_INFO_TAB_2, 767 }; 768 struct coeff coeff; 769 s32 iq_res[6]; 770 u8 num_chains = 0; 771 int i, im, j; 772 int nmeasurement; 773 774 for (i = 0; i < AR9300_MAX_CHAINS; i++) { 775 if (ah->txchainmask & (1 << i)) 776 num_chains++; 777 } 778 779 for (i = 0; i < num_chains; i++) { 780 nmeasurement = REG_READ_FIELD(ah, 781 AR_PHY_TX_IQCAL_STATUS_B0, 782 AR_PHY_CALIBRATED_GAINS_0); 783 if (nmeasurement > MAX_MEASUREMENT) 784 nmeasurement = MAX_MEASUREMENT; 785 786 for (im = 0; im < nmeasurement; im++) { 787 ath_dbg(common, CALIBRATE, 788 "Doing Tx IQ Cal for chain %d\n", i); 789 790 if (REG_READ(ah, txiqcal_status[i]) & 791 AR_PHY_TX_IQCAL_STATUS_FAILED) { 792 ath_dbg(common, CALIBRATE, 793 "Tx IQ Cal failed for chain %d\n", i); 794 goto tx_iqcal_fail; 795 } 796 797 for (j = 0; j < 3; j++) { 798 u32 idx = 2 * j, offset = 4 * (3 * im + j); 799 800 REG_RMW_FIELD(ah, 801 AR_PHY_CHAN_INFO_MEMORY, 802 AR_PHY_CHAN_INFO_TAB_S2_READ, 803 0); 804 805 /* 32 bits */ 806 iq_res[idx] = REG_READ(ah, 807 chan_info_tab[i] + 808 offset); 809 810 REG_RMW_FIELD(ah, 811 AR_PHY_CHAN_INFO_MEMORY, 812 AR_PHY_CHAN_INFO_TAB_S2_READ, 813 1); 814 815 /* 16 bits */ 816 iq_res[idx + 1] = 0xffff & REG_READ(ah, 817 chan_info_tab[i] + offset); 818 819 ath_dbg(common, CALIBRATE, 820 "IQ_RES[%d]=0x%x IQ_RES[%d]=0x%x\n", 821 idx, iq_res[idx], idx + 1, 822 iq_res[idx + 1]); 823 } 824 825 if (!ar9003_hw_calc_iq_corr(ah, i, iq_res, 826 coeff.iqc_coeff)) { 827 ath_dbg(common, CALIBRATE, 828 "Failed in calculation of IQ correction\n"); 829 goto tx_iqcal_fail; 830 } 831 832 coeff.mag_coeff[i][im] = coeff.iqc_coeff[0] & 0x7f; 833 coeff.phs_coeff[i][im] = 834 (coeff.iqc_coeff[0] >> 7) & 0x7f; 835 836 if (coeff.mag_coeff[i][im] > 63) 837 coeff.mag_coeff[i][im] -= 128; 838 if (coeff.phs_coeff[i][im] > 63) 839 coeff.phs_coeff[i][im] -= 128; 840 } 841 } 842 ar9003_hw_tx_iqcal_load_avg_2_passes(ah, num_chains, 843 &coeff, is_reusable); 844 845 return; 846 847 tx_iqcal_fail: 848 ath_dbg(common, CALIBRATE, "Tx IQ Cal failed\n"); 849 return; 850 } 851 852 static void ar9003_hw_tx_iq_cal_reload(struct ath_hw *ah) 853 { 854 struct ath9k_hw_cal_data *caldata = ah->caldata; 855 u32 tx_corr_coeff[MAX_MEASUREMENT][AR9300_MAX_CHAINS]; 856 int i, im; 857 858 memset(tx_corr_coeff, 0, sizeof(tx_corr_coeff)); 859 for (i = 0; i < MAX_MEASUREMENT / 2; i++) { 860 tx_corr_coeff[i * 2][0] = tx_corr_coeff[(i * 2) + 1][0] = 861 AR_PHY_TX_IQCAL_CORR_COEFF_B0(i); 862 if (!AR_SREV_9485(ah)) { 863 tx_corr_coeff[i * 2][1] = 864 tx_corr_coeff[(i * 2) + 1][1] = 865 AR_PHY_TX_IQCAL_CORR_COEFF_B1(i); 866 867 tx_corr_coeff[i * 2][2] = 868 tx_corr_coeff[(i * 2) + 1][2] = 869 AR_PHY_TX_IQCAL_CORR_COEFF_B2(i); 870 } 871 } 872 873 for (i = 0; i < AR9300_MAX_CHAINS; i++) { 874 if (!(ah->txchainmask & (1 << i))) 875 continue; 876 877 for (im = 0; im < caldata->num_measures[i]; im++) { 878 if ((im % 2) == 0) 879 REG_RMW_FIELD(ah, tx_corr_coeff[im][i], 880 AR_PHY_TX_IQCAL_CORR_COEFF_00_COEFF_TABLE, 881 caldata->tx_corr_coeff[im][i]); 882 else 883 REG_RMW_FIELD(ah, tx_corr_coeff[im][i], 884 AR_PHY_TX_IQCAL_CORR_COEFF_01_COEFF_TABLE, 885 caldata->tx_corr_coeff[im][i]); 886 } 887 } 888 889 REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_3, 890 AR_PHY_TX_IQCAL_CONTROL_3_IQCORR_EN, 0x1); 891 REG_RMW_FIELD(ah, AR_PHY_RX_IQCAL_CORR_B0, 892 AR_PHY_RX_IQCAL_CORR_B0_LOOPBACK_IQCORR_EN, 0x1); 893 } 894 895 static bool ar9003_hw_rtt_restore(struct ath_hw *ah, struct ath9k_channel *chan) 896 { 897 struct ath9k_rtt_hist *hist; 898 u32 *table; 899 int i; 900 bool restore; 901 902 if (!ah->caldata) 903 return false; 904 905 hist = &ah->caldata->rtt_hist; 906 if (!hist->num_readings) 907 return false; 908 909 ar9003_hw_rtt_enable(ah); 910 ar9003_hw_rtt_set_mask(ah, 0x00); 911 for (i = 0; i < AR9300_MAX_CHAINS; i++) { 912 if (!(ah->rxchainmask & (1 << i))) 913 continue; 914 table = &hist->table[i][hist->num_readings][0]; 915 ar9003_hw_rtt_load_hist(ah, i, table); 916 } 917 restore = ar9003_hw_rtt_force_restore(ah); 918 ar9003_hw_rtt_disable(ah); 919 920 return restore; 921 } 922 923 static bool ar9003_hw_init_cal(struct ath_hw *ah, 924 struct ath9k_channel *chan) 925 { 926 struct ath_common *common = ath9k_hw_common(ah); 927 struct ath9k_hw_cal_data *caldata = ah->caldata; 928 bool txiqcal_done = false, txclcal_done = false; 929 bool is_reusable = true, status = true; 930 bool run_rtt_cal = false, run_agc_cal; 931 bool rtt = !!(ah->caps.hw_caps & ATH9K_HW_CAP_RTT); 932 bool mci = !!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI); 933 u32 agc_ctrl = 0, agc_supp_cals = AR_PHY_AGC_CONTROL_OFFSET_CAL | 934 AR_PHY_AGC_CONTROL_FLTR_CAL | 935 AR_PHY_AGC_CONTROL_PKDET_CAL; 936 int i, j; 937 u32 cl_idx[AR9300_MAX_CHAINS] = { AR_PHY_CL_TAB_0, 938 AR_PHY_CL_TAB_1, 939 AR_PHY_CL_TAB_2 }; 940 941 if (rtt) { 942 if (!ar9003_hw_rtt_restore(ah, chan)) 943 run_rtt_cal = true; 944 945 ath_dbg(common, CALIBRATE, "RTT restore %s\n", 946 run_rtt_cal ? "failed" : "succeed"); 947 } 948 run_agc_cal = run_rtt_cal; 949 950 if (run_rtt_cal) { 951 ar9003_hw_rtt_enable(ah); 952 ar9003_hw_rtt_set_mask(ah, 0x00); 953 ar9003_hw_rtt_clear_hist(ah); 954 } 955 956 if (rtt && !run_rtt_cal) { 957 agc_ctrl = REG_READ(ah, AR_PHY_AGC_CONTROL); 958 agc_supp_cals &= agc_ctrl; 959 agc_ctrl &= ~(AR_PHY_AGC_CONTROL_OFFSET_CAL | 960 AR_PHY_AGC_CONTROL_FLTR_CAL | 961 AR_PHY_AGC_CONTROL_PKDET_CAL); 962 REG_WRITE(ah, AR_PHY_AGC_CONTROL, agc_ctrl); 963 } 964 965 if (ah->enabled_cals & TX_CL_CAL) { 966 if (caldata && caldata->done_txclcal_once) 967 REG_CLR_BIT(ah, AR_PHY_CL_CAL_CTL, 968 AR_PHY_CL_CAL_ENABLE); 969 else { 970 REG_SET_BIT(ah, AR_PHY_CL_CAL_CTL, 971 AR_PHY_CL_CAL_ENABLE); 972 run_agc_cal = true; 973 } 974 } 975 976 if (!(ah->enabled_cals & TX_IQ_CAL)) 977 goto skip_tx_iqcal; 978 979 /* Do Tx IQ Calibration */ 980 REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_1, 981 AR_PHY_TX_IQCAL_CONTROL_1_IQCORR_I_Q_COFF_DELPT, 982 DELPT); 983 984 /* 985 * For AR9485 or later chips, TxIQ cal runs as part of 986 * AGC calibration 987 */ 988 if (ah->enabled_cals & TX_IQ_ON_AGC_CAL) { 989 if (caldata && !caldata->done_txiqcal_once) 990 REG_SET_BIT(ah, AR_PHY_TX_IQCAL_CONTROL_0, 991 AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL); 992 else 993 REG_CLR_BIT(ah, AR_PHY_TX_IQCAL_CONTROL_0, 994 AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL); 995 txiqcal_done = run_agc_cal = true; 996 goto skip_tx_iqcal; 997 } else if (caldata && !caldata->done_txiqcal_once) 998 run_agc_cal = true; 999 1000 if (mci && IS_CHAN_2GHZ(chan) && run_agc_cal) 1001 ar9003_mci_init_cal_req(ah, &is_reusable); 1002 1003 txiqcal_done = ar9003_hw_tx_iq_cal_run(ah); 1004 REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_DIS); 1005 udelay(5); 1006 REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN); 1007 1008 skip_tx_iqcal: 1009 if (run_agc_cal || !(ah->ah_flags & AH_FASTCC)) { 1010 /* Calibrate the AGC */ 1011 REG_WRITE(ah, AR_PHY_AGC_CONTROL, 1012 REG_READ(ah, AR_PHY_AGC_CONTROL) | 1013 AR_PHY_AGC_CONTROL_CAL); 1014 1015 /* Poll for offset calibration complete */ 1016 status = ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL, 1017 AR_PHY_AGC_CONTROL_CAL, 1018 0, AH_WAIT_TIMEOUT); 1019 } 1020 1021 if (mci && IS_CHAN_2GHZ(chan) && run_agc_cal) 1022 ar9003_mci_init_cal_done(ah); 1023 1024 if (rtt && !run_rtt_cal) { 1025 agc_ctrl |= agc_supp_cals; 1026 REG_WRITE(ah, AR_PHY_AGC_CONTROL, agc_ctrl); 1027 } 1028 1029 if (!status) { 1030 if (run_rtt_cal) 1031 ar9003_hw_rtt_disable(ah); 1032 1033 ath_dbg(common, CALIBRATE, 1034 "offset calibration failed to complete in 1ms; noisy environment?\n"); 1035 return false; 1036 } 1037 1038 if (txiqcal_done) 1039 ar9003_hw_tx_iq_cal_post_proc(ah, is_reusable); 1040 else if (caldata && caldata->done_txiqcal_once) 1041 ar9003_hw_tx_iq_cal_reload(ah); 1042 1043 #define CL_TAB_ENTRY(reg_base) (reg_base + (4 * j)) 1044 if (caldata && (ah->enabled_cals & TX_CL_CAL)) { 1045 txclcal_done = !!(REG_READ(ah, AR_PHY_AGC_CONTROL) & 1046 AR_PHY_AGC_CONTROL_CLC_SUCCESS); 1047 if (caldata->done_txclcal_once) { 1048 for (i = 0; i < AR9300_MAX_CHAINS; i++) { 1049 if (!(ah->txchainmask & (1 << i))) 1050 continue; 1051 for (j = 0; j < MAX_CL_TAB_ENTRY; j++) 1052 REG_WRITE(ah, CL_TAB_ENTRY(cl_idx[i]), 1053 caldata->tx_clcal[i][j]); 1054 } 1055 } else if (is_reusable && txclcal_done) { 1056 for (i = 0; i < AR9300_MAX_CHAINS; i++) { 1057 if (!(ah->txchainmask & (1 << i))) 1058 continue; 1059 for (j = 0; j < MAX_CL_TAB_ENTRY; j++) 1060 caldata->tx_clcal[i][j] = 1061 REG_READ(ah, 1062 CL_TAB_ENTRY(cl_idx[i])); 1063 } 1064 caldata->done_txclcal_once = true; 1065 } 1066 } 1067 #undef CL_TAB_ENTRY 1068 1069 if (run_rtt_cal && caldata) { 1070 struct ath9k_rtt_hist *hist = &caldata->rtt_hist; 1071 if (is_reusable && (hist->num_readings < RTT_HIST_MAX)) { 1072 u32 *table; 1073 1074 hist->num_readings++; 1075 for (i = 0; i < AR9300_MAX_CHAINS; i++) { 1076 if (!(ah->rxchainmask & (1 << i))) 1077 continue; 1078 table = &hist->table[i][hist->num_readings][0]; 1079 ar9003_hw_rtt_fill_hist(ah, i, table); 1080 } 1081 } 1082 1083 ar9003_hw_rtt_disable(ah); 1084 } 1085 1086 /* Initialize list pointers */ 1087 ah->cal_list = ah->cal_list_last = ah->cal_list_curr = NULL; 1088 ah->supp_cals = IQ_MISMATCH_CAL; 1089 1090 if (ah->supp_cals & IQ_MISMATCH_CAL) { 1091 INIT_CAL(&ah->iq_caldata); 1092 INSERT_CAL(ah, &ah->iq_caldata); 1093 ath_dbg(common, CALIBRATE, "enabling IQ Calibration\n"); 1094 } 1095 1096 if (ah->supp_cals & TEMP_COMP_CAL) { 1097 INIT_CAL(&ah->tempCompCalData); 1098 INSERT_CAL(ah, &ah->tempCompCalData); 1099 ath_dbg(common, CALIBRATE, 1100 "enabling Temperature Compensation Calibration\n"); 1101 } 1102 1103 /* Initialize current pointer to first element in list */ 1104 ah->cal_list_curr = ah->cal_list; 1105 1106 if (ah->cal_list_curr) 1107 ath9k_hw_reset_calibration(ah, ah->cal_list_curr); 1108 1109 if (caldata) 1110 caldata->CalValid = 0; 1111 1112 return true; 1113 } 1114 1115 void ar9003_hw_attach_calib_ops(struct ath_hw *ah) 1116 { 1117 struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah); 1118 struct ath_hw_ops *ops = ath9k_hw_ops(ah); 1119 1120 priv_ops->init_cal_settings = ar9003_hw_init_cal_settings; 1121 priv_ops->init_cal = ar9003_hw_init_cal; 1122 priv_ops->setup_calibration = ar9003_hw_setup_calibration; 1123 1124 ops->calibrate = ar9003_hw_calibrate; 1125 } 1126