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fix a kmap leak in virtio_console
[linux/fpc-iii.git] / drivers / net / wireless / ath / ath9k / ar9003_calib.c
bloba352128c40ad370600df154ad868f48c5fe7854a
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 (i2_p_q2_a0_d1 > 0x1000)
659 i2_p_q2_a0_d1 = -((0x1fff - i2_p_q2_a0_d1) + 1);
660
661 if (iq_corr_a0_d1 > 0x800)
662 iq_corr_a0_d1 = -((0xfff - iq_corr_a0_d1) + 1);
663
664 i2_m_q2_a1_d0 = ((iq_res[2] >> 24) & 0xff) + ((iq_res[3] & 0xf) << 8);
665 i2_p_q2_a1_d0 = (iq_res[3] >> 4) & 0xfff;
666 iq_corr_a1_d0 = iq_res[4] & 0xfff;
667
668 if (i2_m_q2_a1_d0 > 0x800)
669 i2_m_q2_a1_d0 = -((0xfff - i2_m_q2_a1_d0) + 1);
670
671 if (i2_p_q2_a1_d0 > 0x800)
672 i2_p_q2_a1_d0 = -((0xfff - i2_p_q2_a1_d0) + 1);
673
674 if (iq_corr_a1_d0 > 0x800)
675 iq_corr_a1_d0 = -((0xfff - iq_corr_a1_d0) + 1);
676
677 i2_m_q2_a1_d1 = (iq_res[4] >> 12) & 0xfff;
678 i2_p_q2_a1_d1 = ((iq_res[4] >> 24) & 0xff) + ((iq_res[5] & 0xf) << 8);
679 iq_corr_a1_d1 = (iq_res[5] >> 4) & 0xfff;
680
681 if (i2_m_q2_a1_d1 > 0x800)
682 i2_m_q2_a1_d1 = -((0xfff - i2_m_q2_a1_d1) + 1);
683
684 if (i2_p_q2_a1_d1 > 0x800)
685 i2_p_q2_a1_d1 = -((0xfff - i2_p_q2_a1_d1) + 1);
686
687 if (iq_corr_a1_d1 > 0x800)
688 iq_corr_a1_d1 = -((0xfff - iq_corr_a1_d1) + 1);
689
690 if ((i2_p_q2_a0_d0 == 0) || (i2_p_q2_a0_d1 == 0) ||
691 (i2_p_q2_a1_d0 == 0) || (i2_p_q2_a1_d1 == 0)) {
692 ath_dbg(common, CALIBRATE,
693 "Divide by 0:\n"
694 "a0_d0=%d\n"
695 "a0_d1=%d\n"
696 "a2_d0=%d\n"
697 "a1_d1=%d\n",
698 i2_p_q2_a0_d0, i2_p_q2_a0_d1,
699 i2_p_q2_a1_d0, i2_p_q2_a1_d1);
700 return false;
701 }
702
703 if ((i2_p_q2_a0_d0 < 1024) || (i2_p_q2_a0_d0 > 2047) ||
704 (i2_p_q2_a1_d0 < 0) || (i2_p_q2_a1_d1 < 0) ||
705 (i2_p_q2_a0_d0 <= i2_m_q2_a0_d0) ||
706 (i2_p_q2_a0_d0 <= iq_corr_a0_d0) ||
707 (i2_p_q2_a0_d1 <= i2_m_q2_a0_d1) ||
708 (i2_p_q2_a0_d1 <= iq_corr_a0_d1) ||
709 (i2_p_q2_a1_d0 <= i2_m_q2_a1_d0) ||
710 (i2_p_q2_a1_d0 <= iq_corr_a1_d0) ||
711 (i2_p_q2_a1_d1 <= i2_m_q2_a1_d1) ||
712 (i2_p_q2_a1_d1 <= iq_corr_a1_d1)) {
713 return false;
714 }
715
716 mag_a0_d0 = (i2_m_q2_a0_d0 * res_scale) / i2_p_q2_a0_d0;
717 phs_a0_d0 = (iq_corr_a0_d0 * res_scale) / i2_p_q2_a0_d0;
718
719 mag_a0_d1 = (i2_m_q2_a0_d1 * res_scale) / i2_p_q2_a0_d1;
720 phs_a0_d1 = (iq_corr_a0_d1 * res_scale) / i2_p_q2_a0_d1;
721
722 mag_a1_d0 = (i2_m_q2_a1_d0 * res_scale) / i2_p_q2_a1_d0;
723 phs_a1_d0 = (iq_corr_a1_d0 * res_scale) / i2_p_q2_a1_d0;
724
725 mag_a1_d1 = (i2_m_q2_a1_d1 * res_scale) / i2_p_q2_a1_d1;
726 phs_a1_d1 = (iq_corr_a1_d1 * res_scale) / i2_p_q2_a1_d1;
727
728 /* w/o analog phase shift */
729 sin_2phi_1 = (((mag_a0_d0 - mag_a0_d1) * delpt_shift) / DELPT);
730 /* w/o analog phase shift */
731 cos_2phi_1 = (((phs_a0_d1 - phs_a0_d0) * delpt_shift) / DELPT);
732 /* w/ analog phase shift */
733 sin_2phi_2 = (((mag_a1_d0 - mag_a1_d1) * delpt_shift) / DELPT);
734 /* w/ analog phase shift */
735 cos_2phi_2 = (((phs_a1_d1 - phs_a1_d0) * delpt_shift) / DELPT);
736
737 /*
738 * force sin^2 + cos^2 = 1;
739 * find magnitude by approximation
740 */
741 mag1 = ar9003_hw_find_mag_approx(ah, cos_2phi_1, sin_2phi_1);
742 mag2 = ar9003_hw_find_mag_approx(ah, cos_2phi_2, sin_2phi_2);
743
744 if ((mag1 == 0) || (mag2 == 0)) {
745 ath_dbg(common, CALIBRATE, "Divide by 0: mag1=%d, mag2=%d\n",
746 mag1, mag2);
747 return false;
748 }
749
750 /* normalization sin and cos by mag */
751 sin_2phi_1 = (sin_2phi_1 * res_scale / mag1);
752 cos_2phi_1 = (cos_2phi_1 * res_scale / mag1);
753 sin_2phi_2 = (sin_2phi_2 * res_scale / mag2);
754 cos_2phi_2 = (cos_2phi_2 * res_scale / mag2);
755
756 /* calculate IQ mismatch */
757 if (!ar9003_hw_solve_iq_cal(ah,
758 sin_2phi_1, cos_2phi_1,
759 sin_2phi_2, cos_2phi_2,
760 mag_a0_d0, phs_a0_d0,
761 mag_a1_d0,
762 phs_a1_d0, solved_eq)) {
763 ath_dbg(common, CALIBRATE,
764 "Call to ar9003_hw_solve_iq_cal() failed\n");
765 return false;
766 }
767
768 mag_tx = solved_eq[0];
769 phs_tx = solved_eq[1];
770 mag_rx = solved_eq[2];
771 phs_rx = solved_eq[3];
772
773 ath_dbg(common, CALIBRATE,
774 "chain %d: mag mismatch=%d phase mismatch=%d\n",
775 chain_idx, mag_tx/res_scale, phs_tx/res_scale);
776
777 if (res_scale == mag_tx) {
778 ath_dbg(common, CALIBRATE,
779 "Divide by 0: mag_tx=%d, res_scale=%d\n",
780 mag_tx, res_scale);
781 return false;
782 }
783
784 /* calculate and quantize Tx IQ correction factor */
785 mag_corr_tx = (mag_tx * res_scale) / (res_scale - mag_tx);
786 phs_corr_tx = -phs_tx;
787
788 q_q_coff = (mag_corr_tx * 128 / res_scale);
789 q_i_coff = (phs_corr_tx * 256 / res_scale);
790
791 ath_dbg(common, CALIBRATE, "tx chain %d: mag corr=%d phase corr=%d\n",
792 chain_idx, q_q_coff, q_i_coff);
793
794 if (q_i_coff < -63)
795 q_i_coff = -63;
796 if (q_i_coff > 63)
797 q_i_coff = 63;
798 if (q_q_coff < -63)
799 q_q_coff = -63;
800 if (q_q_coff > 63)
801 q_q_coff = 63;
802
803 iqc_coeff[0] = (q_q_coff * 128) + q_i_coff;
804
805 ath_dbg(common, CALIBRATE, "tx chain %d: iq corr coeff=%x\n",
806 chain_idx, iqc_coeff[0]);
807
808 if (-mag_rx == res_scale) {
809 ath_dbg(common, CALIBRATE,
810 "Divide by 0: mag_rx=%d, res_scale=%d\n",
811 mag_rx, res_scale);
812 return false;
813 }
814
815 /* calculate and quantize Rx IQ correction factors */
816 mag_corr_rx = (-mag_rx * res_scale) / (res_scale + mag_rx);
817 phs_corr_rx = -phs_rx;
818
819 q_q_coff = (mag_corr_rx * 128 / res_scale);
820 q_i_coff = (phs_corr_rx * 256 / res_scale);
821
822 ath_dbg(common, CALIBRATE, "rx chain %d: mag corr=%d phase corr=%d\n",
823 chain_idx, q_q_coff, q_i_coff);
824
825 if (q_i_coff < -63)
826 q_i_coff = -63;
827 if (q_i_coff > 63)
828 q_i_coff = 63;
829 if (q_q_coff < -63)
830 q_q_coff = -63;
831 if (q_q_coff > 63)
832 q_q_coff = 63;
833
834 iqc_coeff[1] = (q_q_coff * 128) + q_i_coff;
835
836 ath_dbg(common, CALIBRATE, "rx chain %d: iq corr coeff=%x\n",
837 chain_idx, iqc_coeff[1]);
838
839 return true;
840 }
841
842 static void ar9003_hw_detect_outlier(int *mp_coeff, int nmeasurement,
843 int max_delta)
844 {
845 int mp_max = -64, max_idx = 0;
846 int mp_min = 63, min_idx = 0;
847 int mp_avg = 0, i, outlier_idx = 0, mp_count = 0;
848
849 /* find min/max mismatch across all calibrated gains */
850 for (i = 0; i < nmeasurement; i++) {
851 if (mp_coeff[i] > mp_max) {
852 mp_max = mp_coeff[i];
853 max_idx = i;
854 } else if (mp_coeff[i] < mp_min) {
855 mp_min = mp_coeff[i];
856 min_idx = i;
857 }
858 }
859
860 /* find average (exclude max abs value) */
861 for (i = 0; i < nmeasurement; i++) {
862 if ((abs(mp_coeff[i]) < abs(mp_max)) ||
863 (abs(mp_coeff[i]) < abs(mp_min))) {
864 mp_avg += mp_coeff[i];
865 mp_count++;
866 }
867 }
868
869 /*
870 * finding mean magnitude/phase if possible, otherwise
871 * just use the last value as the mean
872 */
873 if (mp_count)
874 mp_avg /= mp_count;
875 else
876 mp_avg = mp_coeff[nmeasurement - 1];
877
878 /* detect outlier */
879 if (abs(mp_max - mp_min) > max_delta) {
880 if (abs(mp_max - mp_avg) > abs(mp_min - mp_avg))
881 outlier_idx = max_idx;
882 else
883 outlier_idx = min_idx;
884
885 mp_coeff[outlier_idx] = mp_avg;
886 }
887 }
888
889 static void ar9003_hw_tx_iqcal_load_avg_2_passes(struct ath_hw *ah,
890 struct coeff *coeff,
891 bool is_reusable)
892 {
893 int i, im, nmeasurement;
894 u32 tx_corr_coeff[MAX_MEASUREMENT][AR9300_MAX_CHAINS];
895 struct ath9k_hw_cal_data *caldata = ah->caldata;
896
897 memset(tx_corr_coeff, 0, sizeof(tx_corr_coeff));
898 for (i = 0; i < MAX_MEASUREMENT / 2; i++) {
899 tx_corr_coeff[i * 2][0] = tx_corr_coeff[(i * 2) + 1][0] =
900 AR_PHY_TX_IQCAL_CORR_COEFF_B0(i);
901 if (!AR_SREV_9485(ah)) {
902 tx_corr_coeff[i * 2][1] =
903 tx_corr_coeff[(i * 2) + 1][1] =
904 AR_PHY_TX_IQCAL_CORR_COEFF_B1(i);
905
906 tx_corr_coeff[i * 2][2] =
907 tx_corr_coeff[(i * 2) + 1][2] =
908 AR_PHY_TX_IQCAL_CORR_COEFF_B2(i);
909 }
910 }
911
912 /* Load the average of 2 passes */
913 for (i = 0; i < AR9300_MAX_CHAINS; i++) {
914 if (!(ah->txchainmask & (1 << i)))
915 continue;
916 nmeasurement = REG_READ_FIELD(ah,
917 AR_PHY_TX_IQCAL_STATUS_B0,
918 AR_PHY_CALIBRATED_GAINS_0);
919
920 if (nmeasurement > MAX_MEASUREMENT)
921 nmeasurement = MAX_MEASUREMENT;
922
923 /* detect outlier only if nmeasurement > 1 */
924 if (nmeasurement > 1) {
925 /* Detect magnitude outlier */
926 ar9003_hw_detect_outlier(coeff->mag_coeff[i],
927 nmeasurement, MAX_MAG_DELTA);
928
929 /* Detect phase outlier */
930 ar9003_hw_detect_outlier(coeff->phs_coeff[i],
931 nmeasurement, MAX_PHS_DELTA);
932 }
933
934 for (im = 0; im < nmeasurement; im++) {
935
936 coeff->iqc_coeff[0] = (coeff->mag_coeff[i][im] & 0x7f) |
937 ((coeff->phs_coeff[i][im] & 0x7f) << 7);
938
939 if ((im % 2) == 0)
940 REG_RMW_FIELD(ah, tx_corr_coeff[im][i],
941 AR_PHY_TX_IQCAL_CORR_COEFF_00_COEFF_TABLE,
942 coeff->iqc_coeff[0]);
943 else
944 REG_RMW_FIELD(ah, tx_corr_coeff[im][i],
945 AR_PHY_TX_IQCAL_CORR_COEFF_01_COEFF_TABLE,
946 coeff->iqc_coeff[0]);
947
948 if (caldata)
949 caldata->tx_corr_coeff[im][i] =
950 coeff->iqc_coeff[0];
951 }
952 if (caldata)
953 caldata->num_measures[i] = nmeasurement;
954 }
955
956 REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_3,
957 AR_PHY_TX_IQCAL_CONTROL_3_IQCORR_EN, 0x1);
958 REG_RMW_FIELD(ah, AR_PHY_RX_IQCAL_CORR_B0,
959 AR_PHY_RX_IQCAL_CORR_B0_LOOPBACK_IQCORR_EN, 0x1);
960
961 if (caldata) {
962 if (is_reusable)
963 set_bit(TXIQCAL_DONE, &caldata->cal_flags);
964 else
965 clear_bit(TXIQCAL_DONE, &caldata->cal_flags);
966 }
967
968 return;
969 }
970
971 static bool ar9003_hw_tx_iq_cal_run(struct ath_hw *ah)
972 {
973 struct ath_common *common = ath9k_hw_common(ah);
974 u8 tx_gain_forced;
975
976 tx_gain_forced = REG_READ_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
977 AR_PHY_TXGAIN_FORCE);
978 if (tx_gain_forced)
979 REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
980 AR_PHY_TXGAIN_FORCE, 0);
981
982 REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_START,
983 AR_PHY_TX_IQCAL_START_DO_CAL, 1);
984
985 if (!ath9k_hw_wait(ah, AR_PHY_TX_IQCAL_START,
986 AR_PHY_TX_IQCAL_START_DO_CAL, 0,
987 AH_WAIT_TIMEOUT)) {
988 ath_dbg(common, CALIBRATE, "Tx IQ Cal is not completed\n");
989 return false;
990 }
991 return true;
992 }
993
994 static void ar9003_hw_tx_iq_cal_post_proc(struct ath_hw *ah, bool is_reusable)
995 {
996 struct ath_common *common = ath9k_hw_common(ah);
997 const u32 txiqcal_status[AR9300_MAX_CHAINS] = {
998 AR_PHY_TX_IQCAL_STATUS_B0,
999 AR_PHY_TX_IQCAL_STATUS_B1,
1000 AR_PHY_TX_IQCAL_STATUS_B2,
1001 };
1002 const u_int32_t chan_info_tab[] = {
1003 AR_PHY_CHAN_INFO_TAB_0,
1004 AR_PHY_CHAN_INFO_TAB_1,
1005 AR_PHY_CHAN_INFO_TAB_2,
1006 };
1007 struct coeff coeff;
1008 s32 iq_res[6];
1009 int i, im, j;
1010 int nmeasurement;
1011
1012 for (i = 0; i < AR9300_MAX_CHAINS; i++) {
1013 if (!(ah->txchainmask & (1 << i)))
1014 continue;
1015
1016 nmeasurement = REG_READ_FIELD(ah,
1017 AR_PHY_TX_IQCAL_STATUS_B0,
1018 AR_PHY_CALIBRATED_GAINS_0);
1019 if (nmeasurement > MAX_MEASUREMENT)
1020 nmeasurement = MAX_MEASUREMENT;
1021
1022 for (im = 0; im < nmeasurement; im++) {
1023 ath_dbg(common, CALIBRATE,
1024 "Doing Tx IQ Cal for chain %d\n", i);
1025
1026 if (REG_READ(ah, txiqcal_status[i]) &
1027 AR_PHY_TX_IQCAL_STATUS_FAILED) {
1028 ath_dbg(common, CALIBRATE,
1029 "Tx IQ Cal failed for chain %d\n", i);
1030 goto tx_iqcal_fail;
1031 }
1032
1033 for (j = 0; j < 3; j++) {
1034 u32 idx = 2 * j, offset = 4 * (3 * im + j);
1035
1036 REG_RMW_FIELD(ah,
1037 AR_PHY_CHAN_INFO_MEMORY,
1038 AR_PHY_CHAN_INFO_TAB_S2_READ,
1039 0);
1040
1041 /* 32 bits */
1042 iq_res[idx] = REG_READ(ah,
1043 chan_info_tab[i] +
1044 offset);
1045
1046 REG_RMW_FIELD(ah,
1047 AR_PHY_CHAN_INFO_MEMORY,
1048 AR_PHY_CHAN_INFO_TAB_S2_READ,
1049 1);
1050
1051 /* 16 bits */
1052 iq_res[idx + 1] = 0xffff & REG_READ(ah,
1053 chan_info_tab[i] + offset);
1054
1055 ath_dbg(common, CALIBRATE,
1056 "IQ_RES[%d]=0x%x IQ_RES[%d]=0x%x\n",
1057 idx, iq_res[idx], idx + 1,
1058 iq_res[idx + 1]);
1059 }
1060
1061 if (!ar9003_hw_calc_iq_corr(ah, i, iq_res,
1062 coeff.iqc_coeff)) {
1063 ath_dbg(common, CALIBRATE,
1064 "Failed in calculation of IQ correction\n");
1065 goto tx_iqcal_fail;
1066 }
1067
1068 coeff.mag_coeff[i][im] = coeff.iqc_coeff[0] & 0x7f;
1069 coeff.phs_coeff[i][im] =
1070 (coeff.iqc_coeff[0] >> 7) & 0x7f;
1071
1072 if (coeff.mag_coeff[i][im] > 63)
1073 coeff.mag_coeff[i][im] -= 128;
1074 if (coeff.phs_coeff[i][im] > 63)
1075 coeff.phs_coeff[i][im] -= 128;
1076 }
1077 }
1078 ar9003_hw_tx_iqcal_load_avg_2_passes(ah, &coeff, is_reusable);
1079
1080 return;
1081
1082 tx_iqcal_fail:
1083 ath_dbg(common, CALIBRATE, "Tx IQ Cal failed\n");
1084 return;
1085 }
1086
1087 static void ar9003_hw_tx_iq_cal_reload(struct ath_hw *ah)
1088 {
1089 struct ath9k_hw_cal_data *caldata = ah->caldata;
1090 u32 tx_corr_coeff[MAX_MEASUREMENT][AR9300_MAX_CHAINS];
1091 int i, im;
1092
1093 memset(tx_corr_coeff, 0, sizeof(tx_corr_coeff));
1094 for (i = 0; i < MAX_MEASUREMENT / 2; i++) {
1095 tx_corr_coeff[i * 2][0] = tx_corr_coeff[(i * 2) + 1][0] =
1096 AR_PHY_TX_IQCAL_CORR_COEFF_B0(i);
1097 if (!AR_SREV_9485(ah)) {
1098 tx_corr_coeff[i * 2][1] =
1099 tx_corr_coeff[(i * 2) + 1][1] =
1100 AR_PHY_TX_IQCAL_CORR_COEFF_B1(i);
1101
1102 tx_corr_coeff[i * 2][2] =
1103 tx_corr_coeff[(i * 2) + 1][2] =
1104 AR_PHY_TX_IQCAL_CORR_COEFF_B2(i);
1105 }
1106 }
1107
1108 for (i = 0; i < AR9300_MAX_CHAINS; i++) {
1109 if (!(ah->txchainmask & (1 << i)))
1110 continue;
1111
1112 for (im = 0; im < caldata->num_measures[i]; im++) {
1113 if ((im % 2) == 0)
1114 REG_RMW_FIELD(ah, tx_corr_coeff[im][i],
1115 AR_PHY_TX_IQCAL_CORR_COEFF_00_COEFF_TABLE,
1116 caldata->tx_corr_coeff[im][i]);
1117 else
1118 REG_RMW_FIELD(ah, tx_corr_coeff[im][i],
1119 AR_PHY_TX_IQCAL_CORR_COEFF_01_COEFF_TABLE,
1120 caldata->tx_corr_coeff[im][i]);
1121 }
1122 }
1123
1124 REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_3,
1125 AR_PHY_TX_IQCAL_CONTROL_3_IQCORR_EN, 0x1);
1126 REG_RMW_FIELD(ah, AR_PHY_RX_IQCAL_CORR_B0,
1127 AR_PHY_RX_IQCAL_CORR_B0_LOOPBACK_IQCORR_EN, 0x1);
1128 }
1129
1130 static void ar9003_hw_manual_peak_cal(struct ath_hw *ah, u8 chain, bool is_2g)
1131 {
1132 int offset[8] = {0}, total = 0, test;
1133 int agc_out, i;
1134
1135 REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_GAINSTAGES(chain),
1136 AR_PHY_65NM_RXRF_GAINSTAGES_RX_OVERRIDE, 0x1);
1137 REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_GAINSTAGES(chain),
1138 AR_PHY_65NM_RXRF_GAINSTAGES_LNAON_CALDC, 0x0);
1139 if (is_2g)
1140 REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_GAINSTAGES(chain),
1141 AR_PHY_65NM_RXRF_GAINSTAGES_LNA2G_GAIN_OVR, 0x0);
1142 else
1143 REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_GAINSTAGES(chain),
1144 AR_PHY_65NM_RXRF_GAINSTAGES_LNA5G_GAIN_OVR, 0x0);
1145
1146 REG_RMW_FIELD(ah, AR_PHY_65NM_RXTX2(chain),
1147 AR_PHY_65NM_RXTX2_RXON_OVR, 0x1);
1148 REG_RMW_FIELD(ah, AR_PHY_65NM_RXTX2(chain),
1149 AR_PHY_65NM_RXTX2_RXON, 0x0);
1150
1151 REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1152 AR_PHY_65NM_RXRF_AGC_AGC_OVERRIDE, 0x1);
1153 REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1154 AR_PHY_65NM_RXRF_AGC_AGC_ON_OVR, 0x1);
1155 REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1156 AR_PHY_65NM_RXRF_AGC_AGC_CAL_OVR, 0x1);
1157
1158 if (AR_SREV_9330_11(ah)) {
1159 REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1160 AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR, 0x0);
1161 } else {
1162 if (is_2g)
1163 REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1164 AR_PHY_65NM_RXRF_AGC_AGC2G_DBDAC_OVR, 0x0);
1165 else
1166 REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1167 AR_PHY_65NM_RXRF_AGC_AGC5G_DBDAC_OVR, 0x0);
1168 }
1169
1170 for (i = 6; i > 0; i--) {
1171 offset[i] = BIT(i - 1);
1172 test = total + offset[i];
1173
1174 if (is_2g)
1175 REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1176 AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR,
1177 test);
1178 else
1179 REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1180 AR_PHY_65NM_RXRF_AGC_AGC5G_CALDAC_OVR,
1181 test);
1182 udelay(100);
1183 agc_out = REG_READ_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1184 AR_PHY_65NM_RXRF_AGC_AGC_OUT);
1185 offset[i] = (agc_out) ? 0 : 1;
1186 total += (offset[i] << (i - 1));
1187 }
1188
1189 if (is_2g)
1190 REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1191 AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR, total);
1192 else
1193 REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1194 AR_PHY_65NM_RXRF_AGC_AGC5G_CALDAC_OVR, total);
1195
1196 REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_GAINSTAGES(chain),
1197 AR_PHY_65NM_RXRF_GAINSTAGES_RX_OVERRIDE, 0);
1198 REG_RMW_FIELD(ah, AR_PHY_65NM_RXTX2(chain),
1199 AR_PHY_65NM_RXTX2_RXON_OVR, 0);
1200 REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1201 AR_PHY_65NM_RXRF_AGC_AGC_CAL_OVR, 0);
1202 }
1203
1204 static void ar9003_hw_do_pcoem_manual_peak_cal(struct ath_hw *ah,
1205 struct ath9k_channel *chan,
1206 bool run_rtt_cal)
1207 {
1208 struct ath9k_hw_cal_data *caldata = ah->caldata;
1209 int i;
1210
1211 if (!AR_SREV_9462(ah) && !AR_SREV_9565(ah) && !AR_SREV_9485(ah))
1212 return;
1213
1214 if ((ah->caps.hw_caps & ATH9K_HW_CAP_RTT) && !run_rtt_cal)
1215 return;
1216
1217 for (i = 0; i < AR9300_MAX_CHAINS; i++) {
1218 if (!(ah->rxchainmask & (1 << i)))
1219 continue;
1220 ar9003_hw_manual_peak_cal(ah, i, IS_CHAN_2GHZ(chan));
1221 }
1222
1223 if (caldata)
1224 set_bit(SW_PKDET_DONE, &caldata->cal_flags);
1225
1226 if ((ah->caps.hw_caps & ATH9K_HW_CAP_RTT) && caldata) {
1227 if (IS_CHAN_2GHZ(chan)){
1228 caldata->caldac[0] = REG_READ_FIELD(ah,
1229 AR_PHY_65NM_RXRF_AGC(0),
1230 AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR);
1231 caldata->caldac[1] = REG_READ_FIELD(ah,
1232 AR_PHY_65NM_RXRF_AGC(1),
1233 AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR);
1234 } else {
1235 caldata->caldac[0] = REG_READ_FIELD(ah,
1236 AR_PHY_65NM_RXRF_AGC(0),
1237 AR_PHY_65NM_RXRF_AGC_AGC5G_CALDAC_OVR);
1238 caldata->caldac[1] = REG_READ_FIELD(ah,
1239 AR_PHY_65NM_RXRF_AGC(1),
1240 AR_PHY_65NM_RXRF_AGC_AGC5G_CALDAC_OVR);
1241 }
1242 }
1243 }
1244
1245 static void ar9003_hw_cl_cal_post_proc(struct ath_hw *ah, bool is_reusable)
1246 {
1247 u32 cl_idx[AR9300_MAX_CHAINS] = { AR_PHY_CL_TAB_0,
1248 AR_PHY_CL_TAB_1,
1249 AR_PHY_CL_TAB_2 };
1250 struct ath9k_hw_cal_data *caldata = ah->caldata;
1251 bool txclcal_done = false;
1252 int i, j;
1253
1254 if (!caldata || !(ah->enabled_cals & TX_CL_CAL))
1255 return;
1256
1257 txclcal_done = !!(REG_READ(ah, AR_PHY_AGC_CONTROL) &
1258 AR_PHY_AGC_CONTROL_CLC_SUCCESS);
1259
1260 if (test_bit(TXCLCAL_DONE, &caldata->cal_flags)) {
1261 for (i = 0; i < AR9300_MAX_CHAINS; i++) {
1262 if (!(ah->txchainmask & (1 << i)))
1263 continue;
1264 for (j = 0; j < MAX_CL_TAB_ENTRY; j++)
1265 REG_WRITE(ah, CL_TAB_ENTRY(cl_idx[i]),
1266 caldata->tx_clcal[i][j]);
1267 }
1268 } else if (is_reusable && txclcal_done) {
1269 for (i = 0; i < AR9300_MAX_CHAINS; i++) {
1270 if (!(ah->txchainmask & (1 << i)))
1271 continue;
1272 for (j = 0; j < MAX_CL_TAB_ENTRY; j++)
1273 caldata->tx_clcal[i][j] =
1274 REG_READ(ah, CL_TAB_ENTRY(cl_idx[i]));
1275 }
1276 set_bit(TXCLCAL_DONE, &caldata->cal_flags);
1277 }
1278 }
1279
1280 static bool ar9003_hw_init_cal_pcoem(struct ath_hw *ah,
1281 struct ath9k_channel *chan)
1282 {
1283 struct ath_common *common = ath9k_hw_common(ah);
1284 struct ath9k_hw_cal_data *caldata = ah->caldata;
1285 bool txiqcal_done = false;
1286 bool is_reusable = true, status = true;
1287 bool run_rtt_cal = false, run_agc_cal;
1288 bool rtt = !!(ah->caps.hw_caps & ATH9K_HW_CAP_RTT);
1289 u32 rx_delay = 0;
1290 u32 agc_ctrl = 0, agc_supp_cals = AR_PHY_AGC_CONTROL_OFFSET_CAL |
1291 AR_PHY_AGC_CONTROL_FLTR_CAL |
1292 AR_PHY_AGC_CONTROL_PKDET_CAL;
1293
1294 /* Use chip chainmask only for calibration */
1295 ar9003_hw_set_chain_masks(ah, ah->caps.rx_chainmask, ah->caps.tx_chainmask);
1296
1297 if (rtt) {
1298 if (!ar9003_hw_rtt_restore(ah, chan))
1299 run_rtt_cal = true;
1300
1301 if (run_rtt_cal)
1302 ath_dbg(common, CALIBRATE, "RTT calibration to be done\n");
1303 }
1304
1305 run_agc_cal = run_rtt_cal;
1306
1307 if (run_rtt_cal) {
1308 ar9003_hw_rtt_enable(ah);
1309 ar9003_hw_rtt_set_mask(ah, 0x00);
1310 ar9003_hw_rtt_clear_hist(ah);
1311 }
1312
1313 if (rtt) {
1314 if (!run_rtt_cal) {
1315 agc_ctrl = REG_READ(ah, AR_PHY_AGC_CONTROL);
1316 agc_supp_cals &= agc_ctrl;
1317 agc_ctrl &= ~(AR_PHY_AGC_CONTROL_OFFSET_CAL |
1318 AR_PHY_AGC_CONTROL_FLTR_CAL |
1319 AR_PHY_AGC_CONTROL_PKDET_CAL);
1320 REG_WRITE(ah, AR_PHY_AGC_CONTROL, agc_ctrl);
1321 } else {
1322 if (ah->ah_flags & AH_FASTCC)
1323 run_agc_cal = true;
1324 }
1325 }
1326
1327 if (ah->enabled_cals & TX_CL_CAL) {
1328 if (caldata && test_bit(TXCLCAL_DONE, &caldata->cal_flags))
1329 REG_CLR_BIT(ah, AR_PHY_CL_CAL_CTL,
1330 AR_PHY_CL_CAL_ENABLE);
1331 else {
1332 REG_SET_BIT(ah, AR_PHY_CL_CAL_CTL,
1333 AR_PHY_CL_CAL_ENABLE);
1334 run_agc_cal = true;
1335 }
1336 }
1337
1338 if ((IS_CHAN_HALF_RATE(chan) || IS_CHAN_QUARTER_RATE(chan)) ||
1339 !(ah->enabled_cals & TX_IQ_CAL))
1340 goto skip_tx_iqcal;
1341
1342 /* Do Tx IQ Calibration */
1343 REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_1,
1344 AR_PHY_TX_IQCAL_CONTROL_1_IQCORR_I_Q_COFF_DELPT,
1345 DELPT);
1346
1347 /*
1348 * For AR9485 or later chips, TxIQ cal runs as part of
1349 * AGC calibration
1350 */
1351 if (ah->enabled_cals & TX_IQ_ON_AGC_CAL) {
1352 if (caldata && !test_bit(TXIQCAL_DONE, &caldata->cal_flags))
1353 REG_SET_BIT(ah, AR_PHY_TX_IQCAL_CONTROL_0,
1354 AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL);
1355 else
1356 REG_CLR_BIT(ah, AR_PHY_TX_IQCAL_CONTROL_0,
1357 AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL);
1358 txiqcal_done = run_agc_cal = true;
1359 }
1360
1361 skip_tx_iqcal:
1362 if (ath9k_hw_mci_is_enabled(ah) && IS_CHAN_2GHZ(chan) && run_agc_cal)
1363 ar9003_mci_init_cal_req(ah, &is_reusable);
1364
1365 if (REG_READ(ah, AR_PHY_CL_CAL_CTL) & AR_PHY_CL_CAL_ENABLE) {
1366 rx_delay = REG_READ(ah, AR_PHY_RX_DELAY);
1367 /* Disable BB_active */
1368 REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_DIS);
1369 udelay(5);
1370 REG_WRITE(ah, AR_PHY_RX_DELAY, AR_PHY_RX_DELAY_DELAY);
1371 REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);
1372 }
1373
1374 if (run_agc_cal || !(ah->ah_flags & AH_FASTCC)) {
1375 /* Calibrate the AGC */
1376 REG_WRITE(ah, AR_PHY_AGC_CONTROL,
1377 REG_READ(ah, AR_PHY_AGC_CONTROL) |
1378 AR_PHY_AGC_CONTROL_CAL);
1379
1380 /* Poll for offset calibration complete */
1381 status = ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL,
1382 AR_PHY_AGC_CONTROL_CAL,
1383 0, AH_WAIT_TIMEOUT);
1384
1385 ar9003_hw_do_pcoem_manual_peak_cal(ah, chan, run_rtt_cal);
1386 }
1387
1388 if (REG_READ(ah, AR_PHY_CL_CAL_CTL) & AR_PHY_CL_CAL_ENABLE) {
1389 REG_WRITE(ah, AR_PHY_RX_DELAY, rx_delay);
1390 udelay(5);
1391 }
1392
1393 if (ath9k_hw_mci_is_enabled(ah) && IS_CHAN_2GHZ(chan) && run_agc_cal)
1394 ar9003_mci_init_cal_done(ah);
1395
1396 if (rtt && !run_rtt_cal) {
1397 agc_ctrl |= agc_supp_cals;
1398 REG_WRITE(ah, AR_PHY_AGC_CONTROL, agc_ctrl);
1399 }
1400
1401 if (!status) {
1402 if (run_rtt_cal)
1403 ar9003_hw_rtt_disable(ah);
1404
1405 ath_dbg(common, CALIBRATE,
1406 "offset calibration failed to complete in %d ms; noisy environment?\n",
1407 AH_WAIT_TIMEOUT / 1000);
1408 return false;
1409 }
1410
1411 if (txiqcal_done)
1412 ar9003_hw_tx_iq_cal_post_proc(ah, is_reusable);
1413 else if (caldata && test_bit(TXIQCAL_DONE, &caldata->cal_flags))
1414 ar9003_hw_tx_iq_cal_reload(ah);
1415
1416 ar9003_hw_cl_cal_post_proc(ah, is_reusable);
1417
1418 if (run_rtt_cal && caldata) {
1419 if (is_reusable) {
1420 if (!ath9k_hw_rfbus_req(ah)) {
1421 ath_err(ath9k_hw_common(ah),
1422 "Could not stop baseband\n");
1423 } else {
1424 ar9003_hw_rtt_fill_hist(ah);
1425
1426 if (test_bit(SW_PKDET_DONE, &caldata->cal_flags))
1427 ar9003_hw_rtt_load_hist(ah);
1428 }
1429
1430 ath9k_hw_rfbus_done(ah);
1431 }
1432
1433 ar9003_hw_rtt_disable(ah);
1434 }
1435
1436 /* Revert chainmask to runtime parameters */
1437 ar9003_hw_set_chain_masks(ah, ah->rxchainmask, ah->txchainmask);
1438
1439 /* Initialize list pointers */
1440 ah->cal_list = ah->cal_list_last = ah->cal_list_curr = NULL;
1441
1442 INIT_CAL(&ah->iq_caldata);
1443 INSERT_CAL(ah, &ah->iq_caldata);
1444 ath_dbg(common, CALIBRATE, "enabling IQ Calibration\n");
1445
1446 /* Initialize current pointer to first element in list */
1447 ah->cal_list_curr = ah->cal_list;
1448
1449 if (ah->cal_list_curr)
1450 ath9k_hw_reset_calibration(ah, ah->cal_list_curr);
1451
1452 if (caldata)
1453 caldata->CalValid = 0;
1454
1455 return true;
1456 }
1457
1458 static bool ar9003_hw_init_cal_soc(struct ath_hw *ah,
1459 struct ath9k_channel *chan)
1460 {
1461 struct ath_common *common = ath9k_hw_common(ah);
1462 struct ath9k_hw_cal_data *caldata = ah->caldata;
1463 bool txiqcal_done = false;
1464 bool is_reusable = true, status = true;
1465 bool run_agc_cal = false, sep_iq_cal = false;
1466
1467 /* Use chip chainmask only for calibration */
1468 ar9003_hw_set_chain_masks(ah, ah->caps.rx_chainmask, ah->caps.tx_chainmask);
1469
1470 if (ah->enabled_cals & TX_CL_CAL) {
1471 REG_SET_BIT(ah, AR_PHY_CL_CAL_CTL, AR_PHY_CL_CAL_ENABLE);
1472 run_agc_cal = true;
1473 }
1474
1475 if (IS_CHAN_HALF_RATE(chan) || IS_CHAN_QUARTER_RATE(chan))
1476 goto skip_tx_iqcal;
1477
1478 /* Do Tx IQ Calibration */
1479 REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_1,
1480 AR_PHY_TX_IQCAL_CONTROL_1_IQCORR_I_Q_COFF_DELPT,
1481 DELPT);
1482
1483 /*
1484 * For AR9485 or later chips, TxIQ cal runs as part of
1485 * AGC calibration. Specifically, AR9550 in SoC chips.
1486 */
1487 if (ah->enabled_cals & TX_IQ_ON_AGC_CAL) {
1488 txiqcal_done = true;
1489 run_agc_cal = true;
1490 } else {
1491 sep_iq_cal = true;
1492 run_agc_cal = true;
1493 }
1494
1495 /*
1496 * In the SoC family, this will run for AR9300, AR9331 and AR9340.
1497 */
1498 if (sep_iq_cal) {
1499 txiqcal_done = ar9003_hw_tx_iq_cal_run(ah);
1500 REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_DIS);
1501 udelay(5);
1502 REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);
1503 }
1504
1505 if (AR_SREV_9550(ah) && IS_CHAN_2GHZ(chan)) {
1506 if (!ar9003_hw_dynamic_osdac_selection(ah, txiqcal_done))
1507 return false;
1508 }
1509
1510 skip_tx_iqcal:
1511 if (run_agc_cal || !(ah->ah_flags & AH_FASTCC)) {
1512 if (AR_SREV_9330_11(ah))
1513 ar9003_hw_manual_peak_cal(ah, 0, IS_CHAN_2GHZ(chan));
1514
1515 /* Calibrate the AGC */
1516 REG_WRITE(ah, AR_PHY_AGC_CONTROL,
1517 REG_READ(ah, AR_PHY_AGC_CONTROL) |
1518 AR_PHY_AGC_CONTROL_CAL);
1519
1520 /* Poll for offset calibration complete */
1521 status = ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL,
1522 AR_PHY_AGC_CONTROL_CAL,
1523 0, AH_WAIT_TIMEOUT);
1524 }
1525
1526 if (!status) {
1527 ath_dbg(common, CALIBRATE,
1528 "offset calibration failed to complete in %d ms; noisy environment?\n",
1529 AH_WAIT_TIMEOUT / 1000);
1530 return false;
1531 }
1532
1533 if (txiqcal_done)
1534 ar9003_hw_tx_iq_cal_post_proc(ah, is_reusable);
1535
1536 /* Revert chainmask to runtime parameters */
1537 ar9003_hw_set_chain_masks(ah, ah->rxchainmask, ah->txchainmask);
1538
1539 /* Initialize list pointers */
1540 ah->cal_list = ah->cal_list_last = ah->cal_list_curr = NULL;
1541
1542 INIT_CAL(&ah->iq_caldata);
1543 INSERT_CAL(ah, &ah->iq_caldata);
1544 ath_dbg(common, CALIBRATE, "enabling IQ Calibration\n");
1545
1546 /* Initialize current pointer to first element in list */
1547 ah->cal_list_curr = ah->cal_list;
1548
1549 if (ah->cal_list_curr)
1550 ath9k_hw_reset_calibration(ah, ah->cal_list_curr);
1551
1552 if (caldata)
1553 caldata->CalValid = 0;
1554
1555 return true;
1556 }
1557
1558 void ar9003_hw_attach_calib_ops(struct ath_hw *ah)
1559 {
1560 struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah);
1561 struct ath_hw_ops *ops = ath9k_hw_ops(ah);
1562
1563 if (AR_SREV_9485(ah) || AR_SREV_9462(ah) || AR_SREV_9565(ah))
1564 priv_ops->init_cal = ar9003_hw_init_cal_pcoem;
1565 else
1566 priv_ops->init_cal = ar9003_hw_init_cal_soc;
1567
1568 priv_ops->init_cal_settings = ar9003_hw_init_cal_settings;
1569 priv_ops->setup_calibration = ar9003_hw_setup_calibration;
1570
1571 ops->calibrate = ar9003_hw_calibrate;
1572 }
Linux with added FPC-III support