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 #define MAXIQCAL        3
27 
28 struct coeff {
29 	int mag_coeff[AR9300_MAX_CHAINS][MAX_MEASUREMENT][MAXIQCAL];
30 	int phs_coeff[AR9300_MAX_CHAINS][MAX_MEASUREMENT][MAXIQCAL];
31 	int iqc_coeff[2];
32 };
33 
34 enum ar9003_cal_types {
35 	IQ_MISMATCH_CAL = BIT(0),
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 	default:
62 		ath_err(common, "Invalid calibration type\n");
63 		break;
64 	}
65 }
66 
67 /*
68  * Generic calibration routine.
69  * Recalibrate the lower PHY chips to account for temperature/environment
70  * changes.
71  */
72 static bool ar9003_hw_per_calibration(struct ath_hw *ah,
73 				      struct ath9k_channel *ichan,
74 				      u8 rxchainmask,
75 				      struct ath9k_cal_list *currCal)
76 {
77 	struct ath9k_hw_cal_data *caldata = ah->caldata;
78 	const struct ath9k_percal_data *cur_caldata = currCal->calData;
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 			return false;
85 
86 		/*
87 		* Accumulate cal measures for active chains
88 		*/
89 		cur_caldata->calCollect(ah);
90 		ah->cal_samples++;
91 
92 		if (ah->cal_samples >= cur_caldata->calNumSamples) {
93 			unsigned int i, numChains = 0;
94 			for (i = 0; i < AR9300_MAX_CHAINS; i++) {
95 				if (rxchainmask & (1 << i))
96 					numChains++;
97 			}
98 
99 			/*
100 			* Process accumulated data
101 			*/
102 			cur_caldata->calPostProc(ah, numChains);
103 
104 			/* Calibration has finished. */
105 			caldata->CalValid |= cur_caldata->calType;
106 			currCal->calState = CAL_DONE;
107 			return true;
108 		} else {
109 			/*
110 			 * Set-up collection of another sub-sample until we
111 			 * get desired number
112 			 */
113 			ar9003_hw_setup_calibration(ah, currCal);
114 		}
115 	} else if (!(caldata->CalValid & cur_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 false;
121 }
122 
123 static int ar9003_hw_calibrate(struct ath_hw *ah, struct ath9k_channel *chan,
124 			       u8 rxchainmask, bool longcal)
125 {
126 	bool iscaldone = true;
127 	struct ath9k_cal_list *currCal = ah->cal_list_curr;
128 	int ret;
129 
130 	/*
131 	 * For given calibration:
132 	 * 1. Call generic cal routine
133 	 * 2. When this cal is done (isCalDone) if we have more cals waiting
134 	 *    (eg after reset), mask this to upper layers by not propagating
135 	 *    isCalDone if it is set to TRUE.
136 	 *    Instead, change isCalDone to FALSE and setup the waiting cal(s)
137 	 *    to be run.
138 	 */
139 	if (currCal &&
140 	    (currCal->calState == CAL_RUNNING ||
141 	     currCal->calState == CAL_WAITING)) {
142 		iscaldone = ar9003_hw_per_calibration(ah, chan,
143 						      rxchainmask, currCal);
144 		if (iscaldone) {
145 			ah->cal_list_curr = currCal = currCal->calNext;
146 
147 			if (currCal->calState == CAL_WAITING) {
148 				iscaldone = false;
149 				ath9k_hw_reset_calibration(ah, currCal);
150 			}
151 		}
152 	}
153 
154 	/*
155 	 * Do NF cal only at longer intervals. Get the value from
156 	 * the previous NF cal and update history buffer.
157 	 */
158 	if (longcal && ath9k_hw_getnf(ah, chan)) {
159 		/*
160 		 * Load the NF from history buffer of the current channel.
161 		 * NF is slow time-variant, so it is OK to use a historical
162 		 * value.
163 		 */
164 		ret = ath9k_hw_loadnf(ah, ah->curchan);
165 		if (ret < 0)
166 			return ret;
167 
168 		/* start NF calibration, without updating BB NF register */
169 		ath9k_hw_start_nfcal(ah, false);
170 	}
171 
172 	return iscaldone;
173 }
174 
175 static void ar9003_hw_iqcal_collect(struct ath_hw *ah)
176 {
177 	int i;
178 
179 	/* Accumulate IQ cal measures for active chains */
180 	for (i = 0; i < AR5416_MAX_CHAINS; i++) {
181 		if (ah->txchainmask & BIT(i)) {
182 			ah->totalPowerMeasI[i] +=
183 				REG_READ(ah, AR_PHY_CAL_MEAS_0(i));
184 			ah->totalPowerMeasQ[i] +=
185 				REG_READ(ah, AR_PHY_CAL_MEAS_1(i));
186 			ah->totalIqCorrMeas[i] +=
187 				(int32_t) REG_READ(ah, AR_PHY_CAL_MEAS_2(i));
188 			ath_dbg(ath9k_hw_common(ah), CALIBRATE,
189 				"%d: Chn %d pmi=0x%08x;pmq=0x%08x;iqcm=0x%08x;\n",
190 				ah->cal_samples, i, ah->totalPowerMeasI[i],
191 				ah->totalPowerMeasQ[i],
192 				ah->totalIqCorrMeas[i]);
193 		}
194 	}
195 }
196 
197 static void ar9003_hw_iqcalibrate(struct ath_hw *ah, u8 numChains)
198 {
199 	struct ath_common *common = ath9k_hw_common(ah);
200 	u32 powerMeasQ, powerMeasI, iqCorrMeas;
201 	u32 qCoffDenom, iCoffDenom;
202 	int32_t qCoff, iCoff;
203 	int iqCorrNeg, i;
204 	static const u_int32_t offset_array[3] = {
205 		AR_PHY_RX_IQCAL_CORR_B0,
206 		AR_PHY_RX_IQCAL_CORR_B1,
207 		AR_PHY_RX_IQCAL_CORR_B2,
208 	};
209 
210 	for (i = 0; i < numChains; i++) {
211 		powerMeasI = ah->totalPowerMeasI[i];
212 		powerMeasQ = ah->totalPowerMeasQ[i];
213 		iqCorrMeas = ah->totalIqCorrMeas[i];
214 
215 		ath_dbg(common, CALIBRATE,
216 			"Starting IQ Cal and Correction for Chain %d\n", i);
217 
218 		ath_dbg(common, CALIBRATE,
219 			"Original: Chn %d iq_corr_meas = 0x%08x\n",
220 			i, ah->totalIqCorrMeas[i]);
221 
222 		iqCorrNeg = 0;
223 
224 		if (iqCorrMeas > 0x80000000) {
225 			iqCorrMeas = (0xffffffff - iqCorrMeas) + 1;
226 			iqCorrNeg = 1;
227 		}
228 
229 		ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_i = 0x%08x\n",
230 			i, powerMeasI);
231 		ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_q = 0x%08x\n",
232 			i, powerMeasQ);
233 		ath_dbg(common, CALIBRATE, "iqCorrNeg is 0x%08x\n", iqCorrNeg);
234 
235 		iCoffDenom = (powerMeasI / 2 + powerMeasQ / 2) / 256;
236 		qCoffDenom = powerMeasQ / 64;
237 
238 		if ((iCoffDenom != 0) && (qCoffDenom != 0)) {
239 			iCoff = iqCorrMeas / iCoffDenom;
240 			qCoff = powerMeasI / qCoffDenom - 64;
241 			ath_dbg(common, CALIBRATE, "Chn %d iCoff = 0x%08x\n",
242 				i, iCoff);
243 			ath_dbg(common, CALIBRATE, "Chn %d qCoff = 0x%08x\n",
244 				i, qCoff);
245 
246 			/* Force bounds on iCoff */
247 			if (iCoff >= 63)
248 				iCoff = 63;
249 			else if (iCoff <= -63)
250 				iCoff = -63;
251 
252 			/* Negate iCoff if iqCorrNeg == 0 */
253 			if (iqCorrNeg == 0x0)
254 				iCoff = -iCoff;
255 
256 			/* Force bounds on qCoff */
257 			if (qCoff >= 63)
258 				qCoff = 63;
259 			else if (qCoff <= -63)
260 				qCoff = -63;
261 
262 			iCoff = iCoff & 0x7f;
263 			qCoff = qCoff & 0x7f;
264 
265 			ath_dbg(common, CALIBRATE,
266 				"Chn %d : iCoff = 0x%x  qCoff = 0x%x\n",
267 				i, iCoff, qCoff);
268 			ath_dbg(common, CALIBRATE,
269 				"Register offset (0x%04x) before update = 0x%x\n",
270 				offset_array[i],
271 				REG_READ(ah, offset_array[i]));
272 
273 			if (AR_SREV_9565(ah) &&
274 			    (iCoff == 63 || qCoff == 63 ||
275 			     iCoff == -63 || qCoff == -63))
276 				return;
277 
278 			REG_RMW_FIELD(ah, offset_array[i],
279 				      AR_PHY_RX_IQCAL_CORR_IQCORR_Q_I_COFF,
280 				      iCoff);
281 			REG_RMW_FIELD(ah, offset_array[i],
282 				      AR_PHY_RX_IQCAL_CORR_IQCORR_Q_Q_COFF,
283 				      qCoff);
284 			ath_dbg(common, CALIBRATE,
285 				"Register offset (0x%04x) QI COFF (bitfields 0x%08x) after update = 0x%x\n",
286 				offset_array[i],
287 				AR_PHY_RX_IQCAL_CORR_IQCORR_Q_I_COFF,
288 				REG_READ(ah, offset_array[i]));
289 			ath_dbg(common, CALIBRATE,
290 				"Register offset (0x%04x) QQ COFF (bitfields 0x%08x) after update = 0x%x\n",
291 				offset_array[i],
292 				AR_PHY_RX_IQCAL_CORR_IQCORR_Q_Q_COFF,
293 				REG_READ(ah, offset_array[i]));
294 
295 			ath_dbg(common, CALIBRATE,
296 				"IQ Cal and Correction done for Chain %d\n", i);
297 		}
298 	}
299 
300 	REG_SET_BIT(ah, AR_PHY_RX_IQCAL_CORR_B0,
301 		    AR_PHY_RX_IQCAL_CORR_IQCORR_ENABLE);
302 	ath_dbg(common, CALIBRATE,
303 		"IQ Cal and Correction (offset 0x%04x) enabled (bit position 0x%08x). New Value 0x%08x\n",
304 		(unsigned) (AR_PHY_RX_IQCAL_CORR_B0),
305 		AR_PHY_RX_IQCAL_CORR_IQCORR_ENABLE,
306 		REG_READ(ah, AR_PHY_RX_IQCAL_CORR_B0));
307 }
308 
309 static const struct ath9k_percal_data iq_cal_single_sample = {
310 	IQ_MISMATCH_CAL,
311 	MIN_CAL_SAMPLES,
312 	PER_MAX_LOG_COUNT,
313 	ar9003_hw_iqcal_collect,
314 	ar9003_hw_iqcalibrate
315 };
316 
317 static void ar9003_hw_init_cal_settings(struct ath_hw *ah)
318 {
319 	ah->iq_caldata.calData = &iq_cal_single_sample;
320 
321 	if (AR_SREV_9300_20_OR_LATER(ah)) {
322 		ah->enabled_cals |= TX_IQ_CAL;
323 		if (AR_SREV_9485_OR_LATER(ah) && !AR_SREV_9340(ah))
324 			ah->enabled_cals |= TX_IQ_ON_AGC_CAL;
325 	}
326 
327 	ah->supp_cals = IQ_MISMATCH_CAL;
328 }
329 
330 #define OFF_UPPER_LT 24
331 #define OFF_LOWER_LT 7
332 
333 static bool ar9003_hw_dynamic_osdac_selection(struct ath_hw *ah,
334 					      bool txiqcal_done)
335 {
336 	struct ath_common *common = ath9k_hw_common(ah);
337 	int ch0_done, osdac_ch0, dc_off_ch0_i1, dc_off_ch0_q1, dc_off_ch0_i2,
338 		dc_off_ch0_q2, dc_off_ch0_i3, dc_off_ch0_q3;
339 	int ch1_done, osdac_ch1, dc_off_ch1_i1, dc_off_ch1_q1, dc_off_ch1_i2,
340 		dc_off_ch1_q2, dc_off_ch1_i3, dc_off_ch1_q3;
341 	int ch2_done, osdac_ch2, dc_off_ch2_i1, dc_off_ch2_q1, dc_off_ch2_i2,
342 		dc_off_ch2_q2, dc_off_ch2_i3, dc_off_ch2_q3;
343 	bool status;
344 	u32 temp, val;
345 
346 	/*
347 	 * Clear offset and IQ calibration, run AGC cal.
348 	 */
349 	REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
350 		    AR_PHY_AGC_CONTROL_OFFSET_CAL);
351 	REG_CLR_BIT(ah, AR_PHY_TX_IQCAL_CONTROL_0,
352 		    AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL);
353 	REG_WRITE(ah, AR_PHY_AGC_CONTROL,
354 		  REG_READ(ah, AR_PHY_AGC_CONTROL) | AR_PHY_AGC_CONTROL_CAL);
355 
356 	status = ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL,
357 			       AR_PHY_AGC_CONTROL_CAL,
358 			       0, AH_WAIT_TIMEOUT);
359 	if (!status) {
360 		ath_dbg(common, CALIBRATE,
361 			"AGC cal without offset cal failed to complete in 1ms");
362 		return false;
363 	}
364 
365 	/*
366 	 * Allow only offset calibration and disable the others
367 	 * (Carrier Leak calibration, TX Filter calibration and
368 	 *  Peak Detector offset calibration).
369 	 */
370 	REG_SET_BIT(ah, AR_PHY_AGC_CONTROL,
371 		    AR_PHY_AGC_CONTROL_OFFSET_CAL);
372 	REG_CLR_BIT(ah, AR_PHY_CL_CAL_CTL,
373 		    AR_PHY_CL_CAL_ENABLE);
374 	REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
375 		    AR_PHY_AGC_CONTROL_FLTR_CAL);
376 	REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
377 		    AR_PHY_AGC_CONTROL_PKDET_CAL);
378 
379 	ch0_done = 0;
380 	ch1_done = 0;
381 	ch2_done = 0;
382 
383 	while ((ch0_done == 0) || (ch1_done == 0) || (ch2_done == 0)) {
384 		osdac_ch0 = (REG_READ(ah, AR_PHY_65NM_CH0_BB1) >> 30) & 0x3;
385 		osdac_ch1 = (REG_READ(ah, AR_PHY_65NM_CH1_BB1) >> 30) & 0x3;
386 		osdac_ch2 = (REG_READ(ah, AR_PHY_65NM_CH2_BB1) >> 30) & 0x3;
387 
388 		REG_SET_BIT(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);
389 
390 		REG_WRITE(ah, AR_PHY_AGC_CONTROL,
391 			  REG_READ(ah, AR_PHY_AGC_CONTROL) | AR_PHY_AGC_CONTROL_CAL);
392 
393 		status = ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL,
394 				       AR_PHY_AGC_CONTROL_CAL,
395 				       0, AH_WAIT_TIMEOUT);
396 		if (!status) {
397 			ath_dbg(common, CALIBRATE,
398 				"DC offset cal failed to complete in 1ms");
399 			return false;
400 		}
401 
402 		REG_CLR_BIT(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);
403 
404 		/*
405 		 * High gain.
406 		 */
407 		REG_WRITE(ah, AR_PHY_65NM_CH0_BB3,
408 			  ((REG_READ(ah, AR_PHY_65NM_CH0_BB3) & 0xfffffcff) | (1 << 8)));
409 		REG_WRITE(ah, AR_PHY_65NM_CH1_BB3,
410 			  ((REG_READ(ah, AR_PHY_65NM_CH1_BB3) & 0xfffffcff) | (1 << 8)));
411 		REG_WRITE(ah, AR_PHY_65NM_CH2_BB3,
412 			  ((REG_READ(ah, AR_PHY_65NM_CH2_BB3) & 0xfffffcff) | (1 << 8)));
413 
414 		temp = REG_READ(ah, AR_PHY_65NM_CH0_BB3);
415 		dc_off_ch0_i1 = (temp >> 26) & 0x1f;
416 		dc_off_ch0_q1 = (temp >> 21) & 0x1f;
417 
418 		temp = REG_READ(ah, AR_PHY_65NM_CH1_BB3);
419 		dc_off_ch1_i1 = (temp >> 26) & 0x1f;
420 		dc_off_ch1_q1 = (temp >> 21) & 0x1f;
421 
422 		temp = REG_READ(ah, AR_PHY_65NM_CH2_BB3);
423 		dc_off_ch2_i1 = (temp >> 26) & 0x1f;
424 		dc_off_ch2_q1 = (temp >> 21) & 0x1f;
425 
426 		/*
427 		 * Low gain.
428 		 */
429 		REG_WRITE(ah, AR_PHY_65NM_CH0_BB3,
430 			  ((REG_READ(ah, AR_PHY_65NM_CH0_BB3) & 0xfffffcff) | (2 << 8)));
431 		REG_WRITE(ah, AR_PHY_65NM_CH1_BB3,
432 			  ((REG_READ(ah, AR_PHY_65NM_CH1_BB3) & 0xfffffcff) | (2 << 8)));
433 		REG_WRITE(ah, AR_PHY_65NM_CH2_BB3,
434 			  ((REG_READ(ah, AR_PHY_65NM_CH2_BB3) & 0xfffffcff) | (2 << 8)));
435 
436 		temp = REG_READ(ah, AR_PHY_65NM_CH0_BB3);
437 		dc_off_ch0_i2 = (temp >> 26) & 0x1f;
438 		dc_off_ch0_q2 = (temp >> 21) & 0x1f;
439 
440 		temp = REG_READ(ah, AR_PHY_65NM_CH1_BB3);
441 		dc_off_ch1_i2 = (temp >> 26) & 0x1f;
442 		dc_off_ch1_q2 = (temp >> 21) & 0x1f;
443 
444 		temp = REG_READ(ah, AR_PHY_65NM_CH2_BB3);
445 		dc_off_ch2_i2 = (temp >> 26) & 0x1f;
446 		dc_off_ch2_q2 = (temp >> 21) & 0x1f;
447 
448 		/*
449 		 * Loopback.
450 		 */
451 		REG_WRITE(ah, AR_PHY_65NM_CH0_BB3,
452 			  ((REG_READ(ah, AR_PHY_65NM_CH0_BB3) & 0xfffffcff) | (3 << 8)));
453 		REG_WRITE(ah, AR_PHY_65NM_CH1_BB3,
454 			  ((REG_READ(ah, AR_PHY_65NM_CH1_BB3) & 0xfffffcff) | (3 << 8)));
455 		REG_WRITE(ah, AR_PHY_65NM_CH2_BB3,
456 			  ((REG_READ(ah, AR_PHY_65NM_CH2_BB3) & 0xfffffcff) | (3 << 8)));
457 
458 		temp = REG_READ(ah, AR_PHY_65NM_CH0_BB3);
459 		dc_off_ch0_i3 = (temp >> 26) & 0x1f;
460 		dc_off_ch0_q3 = (temp >> 21) & 0x1f;
461 
462 		temp = REG_READ(ah, AR_PHY_65NM_CH1_BB3);
463 		dc_off_ch1_i3 = (temp >> 26) & 0x1f;
464 		dc_off_ch1_q3 = (temp >> 21) & 0x1f;
465 
466 		temp = REG_READ(ah, AR_PHY_65NM_CH2_BB3);
467 		dc_off_ch2_i3 = (temp >> 26) & 0x1f;
468 		dc_off_ch2_q3 = (temp >> 21) & 0x1f;
469 
470 		if ((dc_off_ch0_i1 > OFF_UPPER_LT) || (dc_off_ch0_i1 < OFF_LOWER_LT) ||
471 		    (dc_off_ch0_i2 > OFF_UPPER_LT) || (dc_off_ch0_i2 < OFF_LOWER_LT) ||
472 		    (dc_off_ch0_i3 > OFF_UPPER_LT) || (dc_off_ch0_i3 < OFF_LOWER_LT) ||
473 		    (dc_off_ch0_q1 > OFF_UPPER_LT) || (dc_off_ch0_q1 < OFF_LOWER_LT) ||
474 		    (dc_off_ch0_q2 > OFF_UPPER_LT) || (dc_off_ch0_q2 < OFF_LOWER_LT) ||
475 		    (dc_off_ch0_q3 > OFF_UPPER_LT) || (dc_off_ch0_q3 < OFF_LOWER_LT)) {
476 			if (osdac_ch0 == 3) {
477 				ch0_done = 1;
478 			} else {
479 				osdac_ch0++;
480 
481 				val = REG_READ(ah, AR_PHY_65NM_CH0_BB1) & 0x3fffffff;
482 				val |= (osdac_ch0 << 30);
483 				REG_WRITE(ah, AR_PHY_65NM_CH0_BB1, val);
484 
485 				ch0_done = 0;
486 			}
487 		} else {
488 			ch0_done = 1;
489 		}
490 
491 		if ((dc_off_ch1_i1 > OFF_UPPER_LT) || (dc_off_ch1_i1 < OFF_LOWER_LT) ||
492 		    (dc_off_ch1_i2 > OFF_UPPER_LT) || (dc_off_ch1_i2 < OFF_LOWER_LT) ||
493 		    (dc_off_ch1_i3 > OFF_UPPER_LT) || (dc_off_ch1_i3 < OFF_LOWER_LT) ||
494 		    (dc_off_ch1_q1 > OFF_UPPER_LT) || (dc_off_ch1_q1 < OFF_LOWER_LT) ||
495 		    (dc_off_ch1_q2 > OFF_UPPER_LT) || (dc_off_ch1_q2 < OFF_LOWER_LT) ||
496 		    (dc_off_ch1_q3 > OFF_UPPER_LT) || (dc_off_ch1_q3 < OFF_LOWER_LT)) {
497 			if (osdac_ch1 == 3) {
498 				ch1_done = 1;
499 			} else {
500 				osdac_ch1++;
501 
502 				val = REG_READ(ah, AR_PHY_65NM_CH1_BB1) & 0x3fffffff;
503 				val |= (osdac_ch1 << 30);
504 				REG_WRITE(ah, AR_PHY_65NM_CH1_BB1, val);
505 
506 				ch1_done = 0;
507 			}
508 		} else {
509 			ch1_done = 1;
510 		}
511 
512 		if ((dc_off_ch2_i1 > OFF_UPPER_LT) || (dc_off_ch2_i1 < OFF_LOWER_LT) ||
513 		    (dc_off_ch2_i2 > OFF_UPPER_LT) || (dc_off_ch2_i2 < OFF_LOWER_LT) ||
514 		    (dc_off_ch2_i3 > OFF_UPPER_LT) || (dc_off_ch2_i3 < OFF_LOWER_LT) ||
515 		    (dc_off_ch2_q1 > OFF_UPPER_LT) || (dc_off_ch2_q1 < OFF_LOWER_LT) ||
516 		    (dc_off_ch2_q2 > OFF_UPPER_LT) || (dc_off_ch2_q2 < OFF_LOWER_LT) ||
517 		    (dc_off_ch2_q3 > OFF_UPPER_LT) || (dc_off_ch2_q3 < OFF_LOWER_LT)) {
518 			if (osdac_ch2 == 3) {
519 				ch2_done = 1;
520 			} else {
521 				osdac_ch2++;
522 
523 				val = REG_READ(ah, AR_PHY_65NM_CH2_BB1) & 0x3fffffff;
524 				val |= (osdac_ch2 << 30);
525 				REG_WRITE(ah, AR_PHY_65NM_CH2_BB1, val);
526 
527 				ch2_done = 0;
528 			}
529 		} else {
530 			ch2_done = 1;
531 		}
532 	}
533 
534 	REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
535 		    AR_PHY_AGC_CONTROL_OFFSET_CAL);
536 	REG_SET_BIT(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);
537 
538 	/*
539 	 * We don't need to check txiqcal_done here since it is always
540 	 * set for AR9550.
541 	 */
542 	REG_SET_BIT(ah, AR_PHY_TX_IQCAL_CONTROL_0,
543 		    AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL);
544 
545 	return true;
546 }
547 
548 /*
549  * solve 4x4 linear equation used in loopback iq cal.
550  */
551 static bool ar9003_hw_solve_iq_cal(struct ath_hw *ah,
552 				   s32 sin_2phi_1,
553 				   s32 cos_2phi_1,
554 				   s32 sin_2phi_2,
555 				   s32 cos_2phi_2,
556 				   s32 mag_a0_d0,
557 				   s32 phs_a0_d0,
558 				   s32 mag_a1_d0,
559 				   s32 phs_a1_d0,
560 				   s32 solved_eq[])
561 {
562 	s32 f1 = cos_2phi_1 - cos_2phi_2,
563 	    f3 = sin_2phi_1 - sin_2phi_2,
564 	    f2;
565 	s32 mag_tx, phs_tx, mag_rx, phs_rx;
566 	const s32 result_shift = 1 << 15;
567 	struct ath_common *common = ath9k_hw_common(ah);
568 
569 	f2 = ((f1 >> 3) * (f1 >> 3) + (f3 >> 3) * (f3 >> 3)) >> 9;
570 
571 	if (!f2) {
572 		ath_dbg(common, CALIBRATE, "Divide by 0\n");
573 		return false;
574 	}
575 
576 	/* mag mismatch, tx */
577 	mag_tx = f1 * (mag_a0_d0  - mag_a1_d0) + f3 * (phs_a0_d0 - phs_a1_d0);
578 	/* phs mismatch, tx */
579 	phs_tx = f3 * (-mag_a0_d0 + mag_a1_d0) + f1 * (phs_a0_d0 - phs_a1_d0);
580 
581 	mag_tx = (mag_tx / f2);
582 	phs_tx = (phs_tx / f2);
583 
584 	/* mag mismatch, rx */
585 	mag_rx = mag_a0_d0 - (cos_2phi_1 * mag_tx + sin_2phi_1 * phs_tx) /
586 		 result_shift;
587 	/* phs mismatch, rx */
588 	phs_rx = phs_a0_d0 + (sin_2phi_1 * mag_tx - cos_2phi_1 * phs_tx) /
589 		 result_shift;
590 
591 	solved_eq[0] = mag_tx;
592 	solved_eq[1] = phs_tx;
593 	solved_eq[2] = mag_rx;
594 	solved_eq[3] = phs_rx;
595 
596 	return true;
597 }
598 
599 static s32 ar9003_hw_find_mag_approx(struct ath_hw *ah, s32 in_re, s32 in_im)
600 {
601 	s32 abs_i = abs(in_re),
602 	    abs_q = abs(in_im),
603 	    max_abs, min_abs;
604 
605 	if (abs_i > abs_q) {
606 		max_abs = abs_i;
607 		min_abs = abs_q;
608 	} else {
609 		max_abs = abs_q;
610 		min_abs = abs_i;
611 	}
612 
613 	return max_abs - (max_abs / 32) + (min_abs / 8) + (min_abs / 4);
614 }
615 
616 #define DELPT 32
617 
618 static bool ar9003_hw_calc_iq_corr(struct ath_hw *ah,
619 				   s32 chain_idx,
620 				   const s32 iq_res[],
621 				   s32 iqc_coeff[])
622 {
623 	s32 i2_m_q2_a0_d0, i2_p_q2_a0_d0, iq_corr_a0_d0,
624 	    i2_m_q2_a0_d1, i2_p_q2_a0_d1, iq_corr_a0_d1,
625 	    i2_m_q2_a1_d0, i2_p_q2_a1_d0, iq_corr_a1_d0,
626 	    i2_m_q2_a1_d1, i2_p_q2_a1_d1, iq_corr_a1_d1;
627 	s32 mag_a0_d0, mag_a1_d0, mag_a0_d1, mag_a1_d1,
628 	    phs_a0_d0, phs_a1_d0, phs_a0_d1, phs_a1_d1,
629 	    sin_2phi_1, cos_2phi_1,
630 	    sin_2phi_2, cos_2phi_2;
631 	s32 mag_tx, phs_tx, mag_rx, phs_rx;
632 	s32 solved_eq[4], mag_corr_tx, phs_corr_tx, mag_corr_rx, phs_corr_rx,
633 	    q_q_coff, q_i_coff;
634 	const s32 res_scale = 1 << 15;
635 	const s32 delpt_shift = 1 << 8;
636 	s32 mag1, mag2;
637 	struct ath_common *common = ath9k_hw_common(ah);
638 
639 	i2_m_q2_a0_d0 = iq_res[0] & 0xfff;
640 	i2_p_q2_a0_d0 = (iq_res[0] >> 12) & 0xfff;
641 	iq_corr_a0_d0 = ((iq_res[0] >> 24) & 0xff) + ((iq_res[1] & 0xf) << 8);
642 
643 	if (i2_m_q2_a0_d0 > 0x800)
644 		i2_m_q2_a0_d0 = -((0xfff - i2_m_q2_a0_d0) + 1);
645 
646 	if (i2_p_q2_a0_d0 > 0x800)
647 		i2_p_q2_a0_d0 = -((0xfff - i2_p_q2_a0_d0) + 1);
648 
649 	if (iq_corr_a0_d0 > 0x800)
650 		iq_corr_a0_d0 = -((0xfff - iq_corr_a0_d0) + 1);
651 
652 	i2_m_q2_a0_d1 = (iq_res[1] >> 4) & 0xfff;
653 	i2_p_q2_a0_d1 = (iq_res[2] & 0xfff);
654 	iq_corr_a0_d1 = (iq_res[2] >> 12) & 0xfff;
655 
656 	if (i2_m_q2_a0_d1 > 0x800)
657 		i2_m_q2_a0_d1 = -((0xfff - i2_m_q2_a0_d1) + 1);
658 
659 	if (iq_corr_a0_d1 > 0x800)
660 		iq_corr_a0_d1 = -((0xfff - iq_corr_a0_d1) + 1);
661 
662 	i2_m_q2_a1_d0 = ((iq_res[2] >> 24) & 0xff) + ((iq_res[3] & 0xf) << 8);
663 	i2_p_q2_a1_d0 = (iq_res[3] >> 4) & 0xfff;
664 	iq_corr_a1_d0 = iq_res[4] & 0xfff;
665 
666 	if (i2_m_q2_a1_d0 > 0x800)
667 		i2_m_q2_a1_d0 = -((0xfff - i2_m_q2_a1_d0) + 1);
668 
669 	if (i2_p_q2_a1_d0 > 0x800)
670 		i2_p_q2_a1_d0 = -((0xfff - i2_p_q2_a1_d0) + 1);
671 
672 	if (iq_corr_a1_d0 > 0x800)
673 		iq_corr_a1_d0 = -((0xfff - iq_corr_a1_d0) + 1);
674 
675 	i2_m_q2_a1_d1 = (iq_res[4] >> 12) & 0xfff;
676 	i2_p_q2_a1_d1 = ((iq_res[4] >> 24) & 0xff) + ((iq_res[5] & 0xf) << 8);
677 	iq_corr_a1_d1 = (iq_res[5] >> 4) & 0xfff;
678 
679 	if (i2_m_q2_a1_d1 > 0x800)
680 		i2_m_q2_a1_d1 = -((0xfff - i2_m_q2_a1_d1) + 1);
681 
682 	if (i2_p_q2_a1_d1 > 0x800)
683 		i2_p_q2_a1_d1 = -((0xfff - i2_p_q2_a1_d1) + 1);
684 
685 	if (iq_corr_a1_d1 > 0x800)
686 		iq_corr_a1_d1 = -((0xfff - iq_corr_a1_d1) + 1);
687 
688 	if ((i2_p_q2_a0_d0 == 0) || (i2_p_q2_a0_d1 == 0) ||
689 	    (i2_p_q2_a1_d0 == 0) || (i2_p_q2_a1_d1 == 0)) {
690 		ath_dbg(common, CALIBRATE,
691 			"Divide by 0:\n"
692 			"a0_d0=%d\n"
693 			"a0_d1=%d\n"
694 			"a2_d0=%d\n"
695 			"a1_d1=%d\n",
696 			i2_p_q2_a0_d0, i2_p_q2_a0_d1,
697 			i2_p_q2_a1_d0, i2_p_q2_a1_d1);
698 		return false;
699 	}
700 
701 	if ((i2_p_q2_a0_d0 < 1024) || (i2_p_q2_a0_d0 > 2047) ||
702             (i2_p_q2_a1_d0 < 0) || (i2_p_q2_a1_d1 < 0) ||
703             (i2_p_q2_a0_d0 <= i2_m_q2_a0_d0) ||
704             (i2_p_q2_a0_d0 <= iq_corr_a0_d0) ||
705             (i2_p_q2_a0_d1 <= i2_m_q2_a0_d1) ||
706             (i2_p_q2_a0_d1 <= iq_corr_a0_d1) ||
707             (i2_p_q2_a1_d0 <= i2_m_q2_a1_d0) ||
708             (i2_p_q2_a1_d0 <= iq_corr_a1_d0) ||
709             (i2_p_q2_a1_d1 <= i2_m_q2_a1_d1) ||
710             (i2_p_q2_a1_d1 <= iq_corr_a1_d1)) {
711 		return false;
712 	}
713 
714 	mag_a0_d0 = (i2_m_q2_a0_d0 * res_scale) / i2_p_q2_a0_d0;
715 	phs_a0_d0 = (iq_corr_a0_d0 * res_scale) / i2_p_q2_a0_d0;
716 
717 	mag_a0_d1 = (i2_m_q2_a0_d1 * res_scale) / i2_p_q2_a0_d1;
718 	phs_a0_d1 = (iq_corr_a0_d1 * res_scale) / i2_p_q2_a0_d1;
719 
720 	mag_a1_d0 = (i2_m_q2_a1_d0 * res_scale) / i2_p_q2_a1_d0;
721 	phs_a1_d0 = (iq_corr_a1_d0 * res_scale) / i2_p_q2_a1_d0;
722 
723 	mag_a1_d1 = (i2_m_q2_a1_d1 * res_scale) / i2_p_q2_a1_d1;
724 	phs_a1_d1 = (iq_corr_a1_d1 * res_scale) / i2_p_q2_a1_d1;
725 
726 	/* w/o analog phase shift */
727 	sin_2phi_1 = (((mag_a0_d0 - mag_a0_d1) * delpt_shift) / DELPT);
728 	/* w/o analog phase shift */
729 	cos_2phi_1 = (((phs_a0_d1 - phs_a0_d0) * delpt_shift) / DELPT);
730 	/* w/  analog phase shift */
731 	sin_2phi_2 = (((mag_a1_d0 - mag_a1_d1) * delpt_shift) / DELPT);
732 	/* w/  analog phase shift */
733 	cos_2phi_2 = (((phs_a1_d1 - phs_a1_d0) * delpt_shift) / DELPT);
734 
735 	/*
736 	 * force sin^2 + cos^2 = 1;
737 	 * find magnitude by approximation
738 	 */
739 	mag1 = ar9003_hw_find_mag_approx(ah, cos_2phi_1, sin_2phi_1);
740 	mag2 = ar9003_hw_find_mag_approx(ah, cos_2phi_2, sin_2phi_2);
741 
742 	if ((mag1 == 0) || (mag2 == 0)) {
743 		ath_dbg(common, CALIBRATE, "Divide by 0: mag1=%d, mag2=%d\n",
744 			mag1, mag2);
745 		return false;
746 	}
747 
748 	/* normalization sin and cos by mag */
749 	sin_2phi_1 = (sin_2phi_1 * res_scale / mag1);
750 	cos_2phi_1 = (cos_2phi_1 * res_scale / mag1);
751 	sin_2phi_2 = (sin_2phi_2 * res_scale / mag2);
752 	cos_2phi_2 = (cos_2phi_2 * res_scale / mag2);
753 
754 	/* calculate IQ mismatch */
755 	if (!ar9003_hw_solve_iq_cal(ah,
756 			     sin_2phi_1, cos_2phi_1,
757 			     sin_2phi_2, cos_2phi_2,
758 			     mag_a0_d0, phs_a0_d0,
759 			     mag_a1_d0,
760 			     phs_a1_d0, solved_eq)) {
761 		ath_dbg(common, CALIBRATE,
762 			"Call to ar9003_hw_solve_iq_cal() failed\n");
763 		return false;
764 	}
765 
766 	mag_tx = solved_eq[0];
767 	phs_tx = solved_eq[1];
768 	mag_rx = solved_eq[2];
769 	phs_rx = solved_eq[3];
770 
771 	ath_dbg(common, CALIBRATE,
772 		"chain %d: mag mismatch=%d phase mismatch=%d\n",
773 		chain_idx, mag_tx/res_scale, phs_tx/res_scale);
774 
775 	if (res_scale == mag_tx) {
776 		ath_dbg(common, CALIBRATE,
777 			"Divide by 0: mag_tx=%d, res_scale=%d\n",
778 			mag_tx, res_scale);
779 		return false;
780 	}
781 
782 	/* calculate and quantize Tx IQ correction factor */
783 	mag_corr_tx = (mag_tx * res_scale) / (res_scale - mag_tx);
784 	phs_corr_tx = -phs_tx;
785 
786 	q_q_coff = (mag_corr_tx * 128 / res_scale);
787 	q_i_coff = (phs_corr_tx * 256 / res_scale);
788 
789 	ath_dbg(common, CALIBRATE, "tx chain %d: mag corr=%d  phase corr=%d\n",
790 		chain_idx, q_q_coff, q_i_coff);
791 
792 	if (q_i_coff < -63)
793 		q_i_coff = -63;
794 	if (q_i_coff > 63)
795 		q_i_coff = 63;
796 	if (q_q_coff < -63)
797 		q_q_coff = -63;
798 	if (q_q_coff > 63)
799 		q_q_coff = 63;
800 
801 	iqc_coeff[0] = (q_q_coff * 128) + (0x7f & q_i_coff);
802 
803 	ath_dbg(common, CALIBRATE, "tx chain %d: iq corr coeff=%x\n",
804 		chain_idx, iqc_coeff[0]);
805 
806 	if (-mag_rx == res_scale) {
807 		ath_dbg(common, CALIBRATE,
808 			"Divide by 0: mag_rx=%d, res_scale=%d\n",
809 			mag_rx, res_scale);
810 		return false;
811 	}
812 
813 	/* calculate and quantize Rx IQ correction factors */
814 	mag_corr_rx = (-mag_rx * res_scale) / (res_scale + mag_rx);
815 	phs_corr_rx = -phs_rx;
816 
817 	q_q_coff = (mag_corr_rx * 128 / res_scale);
818 	q_i_coff = (phs_corr_rx * 256 / res_scale);
819 
820 	ath_dbg(common, CALIBRATE, "rx chain %d: mag corr=%d  phase corr=%d\n",
821 		chain_idx, q_q_coff, q_i_coff);
822 
823 	if (q_i_coff < -63)
824 		q_i_coff = -63;
825 	if (q_i_coff > 63)
826 		q_i_coff = 63;
827 	if (q_q_coff < -63)
828 		q_q_coff = -63;
829 	if (q_q_coff > 63)
830 		q_q_coff = 63;
831 
832 	iqc_coeff[1] = (q_q_coff * 128) + (0x7f & q_i_coff);
833 
834 	ath_dbg(common, CALIBRATE, "rx chain %d: iq corr coeff=%x\n",
835 		chain_idx, iqc_coeff[1]);
836 
837 	return true;
838 }
839 
840 static void ar9003_hw_detect_outlier(int mp_coeff[][MAXIQCAL],
841 				     int nmeasurement,
842 				     int max_delta)
843 {
844 	int mp_max = -64, max_idx = 0;
845 	int mp_min = 63, min_idx = 0;
846 	int mp_avg = 0, i, outlier_idx = 0, mp_count = 0;
847 
848 	/* find min/max mismatch across all calibrated gains */
849 	for (i = 0; i < nmeasurement; i++) {
850 		if (mp_coeff[i][0] > mp_max) {
851 			mp_max = mp_coeff[i][0];
852 			max_idx = i;
853 		} else if (mp_coeff[i][0] < mp_min) {
854 			mp_min = mp_coeff[i][0];
855 			min_idx = i;
856 		}
857 	}
858 
859 	/* find average (exclude max abs value) */
860 	for (i = 0; i < nmeasurement; i++) {
861 		if ((abs(mp_coeff[i][0]) < abs(mp_max)) ||
862 		    (abs(mp_coeff[i][0]) < abs(mp_min))) {
863 			mp_avg += mp_coeff[i][0];
864 			mp_count++;
865 		}
866 	}
867 
868 	/*
869 	 * finding mean magnitude/phase if possible, otherwise
870 	 * just use the last value as the mean
871 	 */
872 	if (mp_count)
873 		mp_avg /= mp_count;
874 	else
875 		mp_avg = mp_coeff[nmeasurement - 1][0];
876 
877 	/* detect outlier */
878 	if (abs(mp_max - mp_min) > max_delta) {
879 		if (abs(mp_max - mp_avg) > abs(mp_min - mp_avg))
880 			outlier_idx = max_idx;
881 		else
882 			outlier_idx = min_idx;
883 
884 		mp_coeff[outlier_idx][0] = mp_avg;
885 	}
886 }
887 
888 static void ar9003_hw_tx_iq_cal_outlier_detection(struct ath_hw *ah,
889 						  struct coeff *coeff,
890 						  bool is_reusable)
891 {
892 	int i, im, nmeasurement;
893 	int magnitude, phase;
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 		/*
924 		 * Skip normal outlier detection for AR9550.
925 		 */
926 		if (!AR_SREV_9550(ah)) {
927 			/* detect outlier only if nmeasurement > 1 */
928 			if (nmeasurement > 1) {
929 				/* Detect magnitude outlier */
930 				ar9003_hw_detect_outlier(coeff->mag_coeff[i],
931 							 nmeasurement,
932 							 MAX_MAG_DELTA);
933 
934 				/* Detect phase outlier */
935 				ar9003_hw_detect_outlier(coeff->phs_coeff[i],
936 							 nmeasurement,
937 							 MAX_PHS_DELTA);
938 			}
939 		}
940 
941 		for (im = 0; im < nmeasurement; im++) {
942 			magnitude = coeff->mag_coeff[i][im][0];
943 			phase = coeff->phs_coeff[i][im][0];
944 
945 			coeff->iqc_coeff[0] =
946 				(phase & 0x7f) | ((magnitude & 0x7f) << 7);
947 
948 			if ((im % 2) == 0)
949 				REG_RMW_FIELD(ah, tx_corr_coeff[im][i],
950 					AR_PHY_TX_IQCAL_CORR_COEFF_00_COEFF_TABLE,
951 					coeff->iqc_coeff[0]);
952 			else
953 				REG_RMW_FIELD(ah, tx_corr_coeff[im][i],
954 					AR_PHY_TX_IQCAL_CORR_COEFF_01_COEFF_TABLE,
955 					coeff->iqc_coeff[0]);
956 
957 			if (caldata)
958 				caldata->tx_corr_coeff[im][i] =
959 					coeff->iqc_coeff[0];
960 		}
961 		if (caldata)
962 			caldata->num_measures[i] = nmeasurement;
963 	}
964 
965 	REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_3,
966 		      AR_PHY_TX_IQCAL_CONTROL_3_IQCORR_EN, 0x1);
967 	REG_RMW_FIELD(ah, AR_PHY_RX_IQCAL_CORR_B0,
968 		      AR_PHY_RX_IQCAL_CORR_B0_LOOPBACK_IQCORR_EN, 0x1);
969 
970 	if (caldata) {
971 		if (is_reusable)
972 			set_bit(TXIQCAL_DONE, &caldata->cal_flags);
973 		else
974 			clear_bit(TXIQCAL_DONE, &caldata->cal_flags);
975 	}
976 
977 	return;
978 }
979 
980 static bool ar9003_hw_tx_iq_cal_run(struct ath_hw *ah)
981 {
982 	struct ath_common *common = ath9k_hw_common(ah);
983 	u8 tx_gain_forced;
984 
985 	tx_gain_forced = REG_READ_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
986 					AR_PHY_TXGAIN_FORCE);
987 	if (tx_gain_forced)
988 		REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
989 			      AR_PHY_TXGAIN_FORCE, 0);
990 
991 	REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_START,
992 		      AR_PHY_TX_IQCAL_START_DO_CAL, 1);
993 
994 	if (!ath9k_hw_wait(ah, AR_PHY_TX_IQCAL_START,
995 			AR_PHY_TX_IQCAL_START_DO_CAL, 0,
996 			AH_WAIT_TIMEOUT)) {
997 		ath_dbg(common, CALIBRATE, "Tx IQ Cal is not completed\n");
998 		return false;
999 	}
1000 	return true;
1001 }
1002 
1003 static void __ar955x_tx_iq_cal_sort(struct ath_hw *ah,
1004 				    struct coeff *coeff,
1005 				    int i, int nmeasurement)
1006 {
1007 	struct ath_common *common = ath9k_hw_common(ah);
1008 	int im, ix, iy, temp;
1009 
1010 	for (im = 0; im < nmeasurement; im++) {
1011 		for (ix = 0; ix < MAXIQCAL - 1; ix++) {
1012 			for (iy = ix + 1; iy <= MAXIQCAL - 1; iy++) {
1013 				if (coeff->mag_coeff[i][im][iy] <
1014 				    coeff->mag_coeff[i][im][ix]) {
1015 					temp = coeff->mag_coeff[i][im][ix];
1016 					coeff->mag_coeff[i][im][ix] =
1017 						coeff->mag_coeff[i][im][iy];
1018 					coeff->mag_coeff[i][im][iy] = temp;
1019 				}
1020 				if (coeff->phs_coeff[i][im][iy] <
1021 				    coeff->phs_coeff[i][im][ix]) {
1022 					temp = coeff->phs_coeff[i][im][ix];
1023 					coeff->phs_coeff[i][im][ix] =
1024 						coeff->phs_coeff[i][im][iy];
1025 					coeff->phs_coeff[i][im][iy] = temp;
1026 				}
1027 			}
1028 		}
1029 		coeff->mag_coeff[i][im][0] = coeff->mag_coeff[i][im][MAXIQCAL / 2];
1030 		coeff->phs_coeff[i][im][0] = coeff->phs_coeff[i][im][MAXIQCAL / 2];
1031 
1032 		ath_dbg(common, CALIBRATE,
1033 			"IQCAL: Median [ch%d][gain%d]: mag = %d phase = %d\n",
1034 			i, im,
1035 			coeff->mag_coeff[i][im][0],
1036 			coeff->phs_coeff[i][im][0]);
1037 	}
1038 }
1039 
1040 static bool ar955x_tx_iq_cal_median(struct ath_hw *ah,
1041 				    struct coeff *coeff,
1042 				    int iqcal_idx,
1043 				    int nmeasurement)
1044 {
1045 	int i;
1046 
1047 	if ((iqcal_idx + 1) != MAXIQCAL)
1048 		return false;
1049 
1050 	for (i = 0; i < AR9300_MAX_CHAINS; i++) {
1051 		__ar955x_tx_iq_cal_sort(ah, coeff, i, nmeasurement);
1052 	}
1053 
1054 	return true;
1055 }
1056 
1057 static void ar9003_hw_tx_iq_cal_post_proc(struct ath_hw *ah,
1058 					  int iqcal_idx,
1059 					  bool is_reusable)
1060 {
1061 	struct ath_common *common = ath9k_hw_common(ah);
1062 	const u32 txiqcal_status[AR9300_MAX_CHAINS] = {
1063 		AR_PHY_TX_IQCAL_STATUS_B0,
1064 		AR_PHY_TX_IQCAL_STATUS_B1,
1065 		AR_PHY_TX_IQCAL_STATUS_B2,
1066 	};
1067 	const u_int32_t chan_info_tab[] = {
1068 		AR_PHY_CHAN_INFO_TAB_0,
1069 		AR_PHY_CHAN_INFO_TAB_1,
1070 		AR_PHY_CHAN_INFO_TAB_2,
1071 	};
1072 	static struct coeff coeff;
1073 	s32 iq_res[6];
1074 	int i, im, j;
1075 	int nmeasurement = 0;
1076 	bool outlier_detect = true;
1077 
1078 	for (i = 0; i < AR9300_MAX_CHAINS; i++) {
1079 		if (!(ah->txchainmask & (1 << i)))
1080 			continue;
1081 
1082 		nmeasurement = REG_READ_FIELD(ah,
1083 				AR_PHY_TX_IQCAL_STATUS_B0,
1084 				AR_PHY_CALIBRATED_GAINS_0);
1085 		if (nmeasurement > MAX_MEASUREMENT)
1086 			nmeasurement = MAX_MEASUREMENT;
1087 
1088 		for (im = 0; im < nmeasurement; im++) {
1089 			ath_dbg(common, CALIBRATE,
1090 				"Doing Tx IQ Cal for chain %d\n", i);
1091 
1092 			if (REG_READ(ah, txiqcal_status[i]) &
1093 					AR_PHY_TX_IQCAL_STATUS_FAILED) {
1094 				ath_dbg(common, CALIBRATE,
1095 					"Tx IQ Cal failed for chain %d\n", i);
1096 				goto tx_iqcal_fail;
1097 			}
1098 
1099 			for (j = 0; j < 3; j++) {
1100 				u32 idx = 2 * j, offset = 4 * (3 * im + j);
1101 
1102 				REG_RMW_FIELD(ah,
1103 						AR_PHY_CHAN_INFO_MEMORY,
1104 						AR_PHY_CHAN_INFO_TAB_S2_READ,
1105 						0);
1106 
1107 				/* 32 bits */
1108 				iq_res[idx] = REG_READ(ah,
1109 						chan_info_tab[i] +
1110 						offset);
1111 
1112 				REG_RMW_FIELD(ah,
1113 						AR_PHY_CHAN_INFO_MEMORY,
1114 						AR_PHY_CHAN_INFO_TAB_S2_READ,
1115 						1);
1116 
1117 				/* 16 bits */
1118 				iq_res[idx + 1] = 0xffff & REG_READ(ah,
1119 						chan_info_tab[i] + offset);
1120 
1121 				ath_dbg(common, CALIBRATE,
1122 					"IQ_RES[%d]=0x%x IQ_RES[%d]=0x%x\n",
1123 					idx, iq_res[idx], idx + 1,
1124 					iq_res[idx + 1]);
1125 			}
1126 
1127 			if (!ar9003_hw_calc_iq_corr(ah, i, iq_res,
1128 						coeff.iqc_coeff)) {
1129 				ath_dbg(common, CALIBRATE,
1130 					"Failed in calculation of IQ correction\n");
1131 				goto tx_iqcal_fail;
1132 			}
1133 
1134 			coeff.phs_coeff[i][im][iqcal_idx] =
1135 				coeff.iqc_coeff[0] & 0x7f;
1136 			coeff.mag_coeff[i][im][iqcal_idx] =
1137 				(coeff.iqc_coeff[0] >> 7) & 0x7f;
1138 
1139 			if (coeff.mag_coeff[i][im][iqcal_idx] > 63)
1140 				coeff.mag_coeff[i][im][iqcal_idx] -= 128;
1141 			if (coeff.phs_coeff[i][im][iqcal_idx] > 63)
1142 				coeff.phs_coeff[i][im][iqcal_idx] -= 128;
1143 		}
1144 	}
1145 
1146 	if (AR_SREV_9550(ah))
1147 		outlier_detect = ar955x_tx_iq_cal_median(ah, &coeff,
1148 							 iqcal_idx, nmeasurement);
1149 	if (outlier_detect)
1150 		ar9003_hw_tx_iq_cal_outlier_detection(ah, &coeff, is_reusable);
1151 
1152 	return;
1153 
1154 tx_iqcal_fail:
1155 	ath_dbg(common, CALIBRATE, "Tx IQ Cal failed\n");
1156 	return;
1157 }
1158 
1159 static void ar9003_hw_tx_iq_cal_reload(struct ath_hw *ah)
1160 {
1161 	struct ath9k_hw_cal_data *caldata = ah->caldata;
1162 	u32 tx_corr_coeff[MAX_MEASUREMENT][AR9300_MAX_CHAINS];
1163 	int i, im;
1164 
1165 	memset(tx_corr_coeff, 0, sizeof(tx_corr_coeff));
1166 	for (i = 0; i < MAX_MEASUREMENT / 2; i++) {
1167 		tx_corr_coeff[i * 2][0] = tx_corr_coeff[(i * 2) + 1][0] =
1168 					AR_PHY_TX_IQCAL_CORR_COEFF_B0(i);
1169 		if (!AR_SREV_9485(ah)) {
1170 			tx_corr_coeff[i * 2][1] =
1171 			tx_corr_coeff[(i * 2) + 1][1] =
1172 					AR_PHY_TX_IQCAL_CORR_COEFF_B1(i);
1173 
1174 			tx_corr_coeff[i * 2][2] =
1175 			tx_corr_coeff[(i * 2) + 1][2] =
1176 					AR_PHY_TX_IQCAL_CORR_COEFF_B2(i);
1177 		}
1178 	}
1179 
1180 	for (i = 0; i < AR9300_MAX_CHAINS; i++) {
1181 		if (!(ah->txchainmask & (1 << i)))
1182 			continue;
1183 
1184 		for (im = 0; im < caldata->num_measures[i]; im++) {
1185 			if ((im % 2) == 0)
1186 				REG_RMW_FIELD(ah, tx_corr_coeff[im][i],
1187 				     AR_PHY_TX_IQCAL_CORR_COEFF_00_COEFF_TABLE,
1188 				     caldata->tx_corr_coeff[im][i]);
1189 			else
1190 				REG_RMW_FIELD(ah, tx_corr_coeff[im][i],
1191 				     AR_PHY_TX_IQCAL_CORR_COEFF_01_COEFF_TABLE,
1192 				     caldata->tx_corr_coeff[im][i]);
1193 		}
1194 	}
1195 
1196 	REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_3,
1197 		      AR_PHY_TX_IQCAL_CONTROL_3_IQCORR_EN, 0x1);
1198 	REG_RMW_FIELD(ah, AR_PHY_RX_IQCAL_CORR_B0,
1199 		      AR_PHY_RX_IQCAL_CORR_B0_LOOPBACK_IQCORR_EN, 0x1);
1200 }
1201 
1202 static void ar9003_hw_manual_peak_cal(struct ath_hw *ah, u8 chain, bool is_2g)
1203 {
1204 	int offset[8] = {0}, total = 0, test;
1205 	int agc_out, i, peak_detect_threshold = 0;
1206 
1207 	if (AR_SREV_9550(ah) || AR_SREV_9531(ah))
1208 		peak_detect_threshold = 8;
1209 	else if (AR_SREV_9561(ah))
1210 		peak_detect_threshold = 11;
1211 
1212 	/*
1213 	 * Turn off LNA/SW.
1214 	 */
1215 	REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_GAINSTAGES(chain),
1216 		      AR_PHY_65NM_RXRF_GAINSTAGES_RX_OVERRIDE, 0x1);
1217 	REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_GAINSTAGES(chain),
1218 		      AR_PHY_65NM_RXRF_GAINSTAGES_LNAON_CALDC, 0x0);
1219 
1220 	if (AR_SREV_9003_PCOEM(ah) || AR_SREV_9330_11(ah)) {
1221 		if (is_2g)
1222 			REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_GAINSTAGES(chain),
1223 				      AR_PHY_65NM_RXRF_GAINSTAGES_LNA2G_GAIN_OVR, 0x0);
1224 		else
1225 			REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_GAINSTAGES(chain),
1226 				      AR_PHY_65NM_RXRF_GAINSTAGES_LNA5G_GAIN_OVR, 0x0);
1227 	}
1228 
1229 	/*
1230 	 * Turn off RXON.
1231 	 */
1232 	REG_RMW_FIELD(ah, AR_PHY_65NM_RXTX2(chain),
1233 		      AR_PHY_65NM_RXTX2_RXON_OVR, 0x1);
1234 	REG_RMW_FIELD(ah, AR_PHY_65NM_RXTX2(chain),
1235 		      AR_PHY_65NM_RXTX2_RXON, 0x0);
1236 
1237 	/*
1238 	 * Turn on AGC for cal.
1239 	 */
1240 	REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1241 		      AR_PHY_65NM_RXRF_AGC_AGC_OVERRIDE, 0x1);
1242 	REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1243 		      AR_PHY_65NM_RXRF_AGC_AGC_ON_OVR, 0x1);
1244 	REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1245 		      AR_PHY_65NM_RXRF_AGC_AGC_CAL_OVR, 0x1);
1246 
1247 	if (AR_SREV_9330_11(ah))
1248 		REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1249 			      AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR, 0x0);
1250 
1251 	if (is_2g)
1252 		REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1253 			      AR_PHY_65NM_RXRF_AGC_AGC2G_DBDAC_OVR,
1254 			      peak_detect_threshold);
1255 	else
1256 		REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1257 			      AR_PHY_65NM_RXRF_AGC_AGC5G_DBDAC_OVR,
1258 			      peak_detect_threshold);
1259 
1260 	for (i = 6; i > 0; i--) {
1261 		offset[i] = BIT(i - 1);
1262 		test = total + offset[i];
1263 
1264 		if (is_2g)
1265 			REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1266 				      AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR,
1267 				      test);
1268 		else
1269 			REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1270 				      AR_PHY_65NM_RXRF_AGC_AGC5G_CALDAC_OVR,
1271 				      test);
1272 		udelay(100);
1273 		agc_out = REG_READ_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1274 					 AR_PHY_65NM_RXRF_AGC_AGC_OUT);
1275 		offset[i] = (agc_out) ? 0 : 1;
1276 		total += (offset[i] << (i - 1));
1277 	}
1278 
1279 	if (is_2g)
1280 		REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1281 			      AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR, total);
1282 	else
1283 		REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1284 			      AR_PHY_65NM_RXRF_AGC_AGC5G_CALDAC_OVR, total);
1285 
1286 	/*
1287 	 * Turn on LNA.
1288 	 */
1289 	REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_GAINSTAGES(chain),
1290 		      AR_PHY_65NM_RXRF_GAINSTAGES_RX_OVERRIDE, 0);
1291 	/*
1292 	 * Turn off RXON.
1293 	 */
1294 	REG_RMW_FIELD(ah, AR_PHY_65NM_RXTX2(chain),
1295 		      AR_PHY_65NM_RXTX2_RXON_OVR, 0);
1296 	/*
1297 	 * Turn off peak detect calibration.
1298 	 */
1299 	REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
1300 		      AR_PHY_65NM_RXRF_AGC_AGC_CAL_OVR, 0);
1301 }
1302 
1303 static void ar9003_hw_do_pcoem_manual_peak_cal(struct ath_hw *ah,
1304 					       struct ath9k_channel *chan,
1305 					       bool run_rtt_cal)
1306 {
1307 	struct ath9k_hw_cal_data *caldata = ah->caldata;
1308 	int i;
1309 
1310 	if ((ah->caps.hw_caps & ATH9K_HW_CAP_RTT) && !run_rtt_cal)
1311 		return;
1312 
1313 	for (i = 0; i < AR9300_MAX_CHAINS; i++) {
1314 		if (!(ah->rxchainmask & (1 << i)))
1315 			continue;
1316 		ar9003_hw_manual_peak_cal(ah, i, IS_CHAN_2GHZ(chan));
1317 	}
1318 
1319 	if (caldata)
1320 		set_bit(SW_PKDET_DONE, &caldata->cal_flags);
1321 
1322 	if ((ah->caps.hw_caps & ATH9K_HW_CAP_RTT) && caldata) {
1323 		if (IS_CHAN_2GHZ(chan)){
1324 			caldata->caldac[0] = REG_READ_FIELD(ah,
1325 						    AR_PHY_65NM_RXRF_AGC(0),
1326 						    AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR);
1327 			caldata->caldac[1] = REG_READ_FIELD(ah,
1328 						    AR_PHY_65NM_RXRF_AGC(1),
1329 						    AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR);
1330 		} else {
1331 			caldata->caldac[0] = REG_READ_FIELD(ah,
1332 						    AR_PHY_65NM_RXRF_AGC(0),
1333 						    AR_PHY_65NM_RXRF_AGC_AGC5G_CALDAC_OVR);
1334 			caldata->caldac[1] = REG_READ_FIELD(ah,
1335 						    AR_PHY_65NM_RXRF_AGC(1),
1336 						    AR_PHY_65NM_RXRF_AGC_AGC5G_CALDAC_OVR);
1337 		}
1338 	}
1339 }
1340 
1341 static void ar9003_hw_cl_cal_post_proc(struct ath_hw *ah, bool is_reusable)
1342 {
1343 	u32 cl_idx[AR9300_MAX_CHAINS] = { AR_PHY_CL_TAB_0,
1344 					  AR_PHY_CL_TAB_1,
1345 					  AR_PHY_CL_TAB_2 };
1346 	struct ath9k_hw_cal_data *caldata = ah->caldata;
1347 	bool txclcal_done = false;
1348 	int i, j;
1349 
1350 	if (!caldata || !(ah->enabled_cals & TX_CL_CAL))
1351 		return;
1352 
1353 	txclcal_done = !!(REG_READ(ah, AR_PHY_AGC_CONTROL) &
1354 			  AR_PHY_AGC_CONTROL_CLC_SUCCESS);
1355 
1356 	if (test_bit(TXCLCAL_DONE, &caldata->cal_flags)) {
1357 		for (i = 0; i < AR9300_MAX_CHAINS; i++) {
1358 			if (!(ah->txchainmask & (1 << i)))
1359 				continue;
1360 			for (j = 0; j < MAX_CL_TAB_ENTRY; j++)
1361 				REG_WRITE(ah, CL_TAB_ENTRY(cl_idx[i]),
1362 					  caldata->tx_clcal[i][j]);
1363 		}
1364 	} else if (is_reusable && txclcal_done) {
1365 		for (i = 0; i < AR9300_MAX_CHAINS; i++) {
1366 			if (!(ah->txchainmask & (1 << i)))
1367 				continue;
1368 			for (j = 0; j < MAX_CL_TAB_ENTRY; j++)
1369 				caldata->tx_clcal[i][j] =
1370 					REG_READ(ah, CL_TAB_ENTRY(cl_idx[i]));
1371 		}
1372 		set_bit(TXCLCAL_DONE, &caldata->cal_flags);
1373 	}
1374 }
1375 
1376 static void ar9003_hw_init_cal_common(struct ath_hw *ah)
1377 {
1378 	struct ath9k_hw_cal_data *caldata = ah->caldata;
1379 
1380 	/* Initialize list pointers */
1381 	ah->cal_list = ah->cal_list_last = ah->cal_list_curr = NULL;
1382 
1383 	INIT_CAL(&ah->iq_caldata);
1384 	INSERT_CAL(ah, &ah->iq_caldata);
1385 
1386 	/* Initialize current pointer to first element in list */
1387 	ah->cal_list_curr = ah->cal_list;
1388 
1389 	if (ah->cal_list_curr)
1390 		ath9k_hw_reset_calibration(ah, ah->cal_list_curr);
1391 
1392 	if (caldata)
1393 		caldata->CalValid = 0;
1394 }
1395 
1396 static bool ar9003_hw_init_cal_pcoem(struct ath_hw *ah,
1397 				     struct ath9k_channel *chan)
1398 {
1399 	struct ath_common *common = ath9k_hw_common(ah);
1400 	struct ath9k_hw_cal_data *caldata = ah->caldata;
1401 	bool txiqcal_done = false;
1402 	bool is_reusable = true, status = true;
1403 	bool run_rtt_cal = false, run_agc_cal;
1404 	bool rtt = !!(ah->caps.hw_caps & ATH9K_HW_CAP_RTT);
1405 	u32 rx_delay = 0;
1406 	u32 agc_ctrl = 0, agc_supp_cals = AR_PHY_AGC_CONTROL_OFFSET_CAL |
1407 					  AR_PHY_AGC_CONTROL_FLTR_CAL   |
1408 					  AR_PHY_AGC_CONTROL_PKDET_CAL;
1409 
1410 	/* Use chip chainmask only for calibration */
1411 	ar9003_hw_set_chain_masks(ah, ah->caps.rx_chainmask, ah->caps.tx_chainmask);
1412 
1413 	if (rtt) {
1414 		if (!ar9003_hw_rtt_restore(ah, chan))
1415 			run_rtt_cal = true;
1416 
1417 		if (run_rtt_cal)
1418 			ath_dbg(common, CALIBRATE, "RTT calibration to be done\n");
1419 	}
1420 
1421 	run_agc_cal = run_rtt_cal;
1422 
1423 	if (run_rtt_cal) {
1424 		ar9003_hw_rtt_enable(ah);
1425 		ar9003_hw_rtt_set_mask(ah, 0x00);
1426 		ar9003_hw_rtt_clear_hist(ah);
1427 	}
1428 
1429 	if (rtt) {
1430 		if (!run_rtt_cal) {
1431 			agc_ctrl = REG_READ(ah, AR_PHY_AGC_CONTROL);
1432 			agc_supp_cals &= agc_ctrl;
1433 			agc_ctrl &= ~(AR_PHY_AGC_CONTROL_OFFSET_CAL |
1434 				      AR_PHY_AGC_CONTROL_FLTR_CAL |
1435 				      AR_PHY_AGC_CONTROL_PKDET_CAL);
1436 			REG_WRITE(ah, AR_PHY_AGC_CONTROL, agc_ctrl);
1437 		} else {
1438 			if (ah->ah_flags & AH_FASTCC)
1439 				run_agc_cal = true;
1440 		}
1441 	}
1442 
1443 	if (ah->enabled_cals & TX_CL_CAL) {
1444 		if (caldata && test_bit(TXCLCAL_DONE, &caldata->cal_flags))
1445 			REG_CLR_BIT(ah, AR_PHY_CL_CAL_CTL,
1446 				    AR_PHY_CL_CAL_ENABLE);
1447 		else {
1448 			REG_SET_BIT(ah, AR_PHY_CL_CAL_CTL,
1449 				    AR_PHY_CL_CAL_ENABLE);
1450 			run_agc_cal = true;
1451 		}
1452 	}
1453 
1454 	if ((IS_CHAN_HALF_RATE(chan) || IS_CHAN_QUARTER_RATE(chan)) ||
1455 	    !(ah->enabled_cals & TX_IQ_CAL))
1456 		goto skip_tx_iqcal;
1457 
1458 	/* Do Tx IQ Calibration */
1459 	REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_1,
1460 		      AR_PHY_TX_IQCAL_CONTROL_1_IQCORR_I_Q_COFF_DELPT,
1461 		      DELPT);
1462 
1463 	/*
1464 	 * For AR9485 or later chips, TxIQ cal runs as part of
1465 	 * AGC calibration
1466 	 */
1467 	if (ah->enabled_cals & TX_IQ_ON_AGC_CAL) {
1468 		if (caldata && !test_bit(TXIQCAL_DONE, &caldata->cal_flags))
1469 			REG_SET_BIT(ah, AR_PHY_TX_IQCAL_CONTROL_0,
1470 				    AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL);
1471 		else
1472 			REG_CLR_BIT(ah, AR_PHY_TX_IQCAL_CONTROL_0,
1473 				    AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL);
1474 		txiqcal_done = run_agc_cal = true;
1475 	}
1476 
1477 skip_tx_iqcal:
1478 	if (ath9k_hw_mci_is_enabled(ah) && IS_CHAN_2GHZ(chan) && run_agc_cal)
1479 		ar9003_mci_init_cal_req(ah, &is_reusable);
1480 
1481 	if (REG_READ(ah, AR_PHY_CL_CAL_CTL) & AR_PHY_CL_CAL_ENABLE) {
1482 		rx_delay = REG_READ(ah, AR_PHY_RX_DELAY);
1483 		/* Disable BB_active */
1484 		REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_DIS);
1485 		udelay(5);
1486 		REG_WRITE(ah, AR_PHY_RX_DELAY, AR_PHY_RX_DELAY_DELAY);
1487 		REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);
1488 	}
1489 
1490 	if (run_agc_cal || !(ah->ah_flags & AH_FASTCC)) {
1491 		/* Calibrate the AGC */
1492 		REG_WRITE(ah, AR_PHY_AGC_CONTROL,
1493 			  REG_READ(ah, AR_PHY_AGC_CONTROL) |
1494 			  AR_PHY_AGC_CONTROL_CAL);
1495 
1496 		/* Poll for offset calibration complete */
1497 		status = ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL,
1498 				       AR_PHY_AGC_CONTROL_CAL,
1499 				       0, AH_WAIT_TIMEOUT);
1500 
1501 		ar9003_hw_do_pcoem_manual_peak_cal(ah, chan, run_rtt_cal);
1502 	}
1503 
1504 	if (REG_READ(ah, AR_PHY_CL_CAL_CTL) & AR_PHY_CL_CAL_ENABLE) {
1505 		REG_WRITE(ah, AR_PHY_RX_DELAY, rx_delay);
1506 		udelay(5);
1507 	}
1508 
1509 	if (ath9k_hw_mci_is_enabled(ah) && IS_CHAN_2GHZ(chan) && run_agc_cal)
1510 		ar9003_mci_init_cal_done(ah);
1511 
1512 	if (rtt && !run_rtt_cal) {
1513 		agc_ctrl |= agc_supp_cals;
1514 		REG_WRITE(ah, AR_PHY_AGC_CONTROL, agc_ctrl);
1515 	}
1516 
1517 	if (!status) {
1518 		if (run_rtt_cal)
1519 			ar9003_hw_rtt_disable(ah);
1520 
1521 		ath_dbg(common, CALIBRATE,
1522 			"offset calibration failed to complete in %d ms; noisy environment?\n",
1523 			AH_WAIT_TIMEOUT / 1000);
1524 		return false;
1525 	}
1526 
1527 	if (txiqcal_done)
1528 		ar9003_hw_tx_iq_cal_post_proc(ah, 0, is_reusable);
1529 	else if (caldata && test_bit(TXIQCAL_DONE, &caldata->cal_flags))
1530 		ar9003_hw_tx_iq_cal_reload(ah);
1531 
1532 	ar9003_hw_cl_cal_post_proc(ah, is_reusable);
1533 
1534 	if (run_rtt_cal && caldata) {
1535 		if (is_reusable) {
1536 			if (!ath9k_hw_rfbus_req(ah)) {
1537 				ath_err(ath9k_hw_common(ah),
1538 					"Could not stop baseband\n");
1539 			} else {
1540 				ar9003_hw_rtt_fill_hist(ah);
1541 
1542 				if (test_bit(SW_PKDET_DONE, &caldata->cal_flags))
1543 					ar9003_hw_rtt_load_hist(ah);
1544 			}
1545 
1546 			ath9k_hw_rfbus_done(ah);
1547 		}
1548 
1549 		ar9003_hw_rtt_disable(ah);
1550 	}
1551 
1552 	/* Revert chainmask to runtime parameters */
1553 	ar9003_hw_set_chain_masks(ah, ah->rxchainmask, ah->txchainmask);
1554 
1555 	ar9003_hw_init_cal_common(ah);
1556 
1557 	return true;
1558 }
1559 
1560 static bool do_ar9003_agc_cal(struct ath_hw *ah)
1561 {
1562 	struct ath_common *common = ath9k_hw_common(ah);
1563 	bool status;
1564 
1565 	REG_WRITE(ah, AR_PHY_AGC_CONTROL,
1566 		  REG_READ(ah, AR_PHY_AGC_CONTROL) |
1567 		  AR_PHY_AGC_CONTROL_CAL);
1568 
1569 	status = ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL,
1570 			       AR_PHY_AGC_CONTROL_CAL,
1571 			       0, AH_WAIT_TIMEOUT);
1572 	if (!status) {
1573 		ath_dbg(common, CALIBRATE,
1574 			"offset calibration failed to complete in %d ms,"
1575 			"noisy environment?\n",
1576 			AH_WAIT_TIMEOUT / 1000);
1577 		return false;
1578 	}
1579 
1580 	return true;
1581 }
1582 
1583 static bool ar9003_hw_init_cal_soc(struct ath_hw *ah,
1584 				   struct ath9k_channel *chan)
1585 {
1586 	bool txiqcal_done = false;
1587 	bool status = true;
1588 	bool run_agc_cal = false, sep_iq_cal = false;
1589 	int i = 0;
1590 
1591 	/* Use chip chainmask only for calibration */
1592 	ar9003_hw_set_chain_masks(ah, ah->caps.rx_chainmask, ah->caps.tx_chainmask);
1593 
1594 	if (ah->enabled_cals & TX_CL_CAL) {
1595 		REG_SET_BIT(ah, AR_PHY_CL_CAL_CTL, AR_PHY_CL_CAL_ENABLE);
1596 		run_agc_cal = true;
1597 	}
1598 
1599 	if (IS_CHAN_HALF_RATE(chan) || IS_CHAN_QUARTER_RATE(chan))
1600 		goto skip_tx_iqcal;
1601 
1602 	/* Do Tx IQ Calibration */
1603 	REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_1,
1604 		      AR_PHY_TX_IQCAL_CONTROL_1_IQCORR_I_Q_COFF_DELPT,
1605 		      DELPT);
1606 
1607 	/*
1608 	 * For AR9485 or later chips, TxIQ cal runs as part of
1609 	 * AGC calibration. Specifically, AR9550 in SoC chips.
1610 	 */
1611 	if (ah->enabled_cals & TX_IQ_ON_AGC_CAL) {
1612 		if (REG_READ_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_0,
1613 				   AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL)) {
1614 				txiqcal_done = true;
1615 		} else {
1616 			txiqcal_done = false;
1617 		}
1618 		run_agc_cal = true;
1619 	} else {
1620 		sep_iq_cal = true;
1621 		run_agc_cal = true;
1622 	}
1623 
1624 	/*
1625 	 * In the SoC family, this will run for AR9300, AR9331 and AR9340.
1626 	 */
1627 	if (sep_iq_cal) {
1628 		txiqcal_done = ar9003_hw_tx_iq_cal_run(ah);
1629 		REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_DIS);
1630 		udelay(5);
1631 		REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);
1632 	}
1633 
1634 	if (AR_SREV_9550(ah) && IS_CHAN_2GHZ(chan)) {
1635 		if (!ar9003_hw_dynamic_osdac_selection(ah, txiqcal_done))
1636 			return false;
1637 	}
1638 
1639 skip_tx_iqcal:
1640 	if (run_agc_cal || !(ah->ah_flags & AH_FASTCC)) {
1641 		for (i = 0; i < AR9300_MAX_CHAINS; i++) {
1642 			if (!(ah->rxchainmask & (1 << i)))
1643 				continue;
1644 
1645 			ar9003_hw_manual_peak_cal(ah, i,
1646 						  IS_CHAN_2GHZ(chan));
1647 		}
1648 
1649 		/*
1650 		 * For non-AR9550 chips, we just trigger AGC calibration
1651 		 * in the HW, poll for completion and then process
1652 		 * the results.
1653 		 *
1654 		 * For AR955x, we run it multiple times and use
1655 		 * median IQ correction.
1656 		 */
1657 		if (!AR_SREV_9550(ah)) {
1658 			status = do_ar9003_agc_cal(ah);
1659 			if (!status)
1660 				return false;
1661 
1662 			if (txiqcal_done)
1663 				ar9003_hw_tx_iq_cal_post_proc(ah, 0, false);
1664 		} else {
1665 			if (!txiqcal_done) {
1666 				status = do_ar9003_agc_cal(ah);
1667 				if (!status)
1668 					return false;
1669 			} else {
1670 				for (i = 0; i < MAXIQCAL; i++) {
1671 					status = do_ar9003_agc_cal(ah);
1672 					if (!status)
1673 						return false;
1674 					ar9003_hw_tx_iq_cal_post_proc(ah, i, false);
1675 				}
1676 			}
1677 		}
1678 	}
1679 
1680 	/* Revert chainmask to runtime parameters */
1681 	ar9003_hw_set_chain_masks(ah, ah->rxchainmask, ah->txchainmask);
1682 
1683 	ar9003_hw_init_cal_common(ah);
1684 
1685 	return true;
1686 }
1687 
1688 void ar9003_hw_attach_calib_ops(struct ath_hw *ah)
1689 {
1690 	struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah);
1691 	struct ath_hw_ops *ops = ath9k_hw_ops(ah);
1692 
1693 	if (AR_SREV_9003_PCOEM(ah))
1694 		priv_ops->init_cal = ar9003_hw_init_cal_pcoem;
1695 	else
1696 		priv_ops->init_cal = ar9003_hw_init_cal_soc;
1697 
1698 	priv_ops->init_cal_settings = ar9003_hw_init_cal_settings;
1699 	priv_ops->setup_calibration = ar9003_hw_setup_calibration;
1700 
1701 	ops->calibrate = ar9003_hw_calibrate;
1702 }
1703