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Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[deliverable/linux.git] / drivers / net / wireless / ath / ath9k / ar9002_calib.c
1 /*
2 * Copyright (c) 2008-2011 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 "ar9002_phy.h"
20
21 #define AR9285_CLCAL_REDO_THRESH 1
22
23 enum ar9002_cal_types {
24 ADC_GAIN_CAL = BIT(0),
25 ADC_DC_CAL = BIT(1),
26 IQ_MISMATCH_CAL = BIT(2),
27 };
28
29 static bool ar9002_hw_is_cal_supported(struct ath_hw *ah,
30 struct ath9k_channel *chan,
31 enum ar9002_cal_types cal_type)
32 {
33 bool supported = false;
34 switch (ah->supp_cals & cal_type) {
35 case IQ_MISMATCH_CAL:
36 /* Run IQ Mismatch for non-CCK only */
37 if (!IS_CHAN_B(chan))
38 supported = true;
39 break;
40 case ADC_GAIN_CAL:
41 case ADC_DC_CAL:
42 /* Run ADC Gain Cal for non-CCK & non 2GHz-HT20 only */
43 if (!IS_CHAN_B(chan) &&
44 !((IS_CHAN_2GHZ(chan) || IS_CHAN_A_FAST_CLOCK(ah, chan)) &&
45 IS_CHAN_HT20(chan)))
46 supported = true;
47 break;
48 }
49 return supported;
50 }
51
52 static void ar9002_hw_setup_calibration(struct ath_hw *ah,
53 struct ath9k_cal_list *currCal)
54 {
55 struct ath_common *common = ath9k_hw_common(ah);
56
57 REG_RMW_FIELD(ah, AR_PHY_TIMING_CTRL4(0),
58 AR_PHY_TIMING_CTRL4_IQCAL_LOG_COUNT_MAX,
59 currCal->calData->calCountMax);
60
61 switch (currCal->calData->calType) {
62 case IQ_MISMATCH_CAL:
63 REG_WRITE(ah, AR_PHY_CALMODE, AR_PHY_CALMODE_IQ);
64 ath_dbg(common, CALIBRATE,
65 "starting IQ Mismatch Calibration\n");
66 break;
67 case ADC_GAIN_CAL:
68 REG_WRITE(ah, AR_PHY_CALMODE, AR_PHY_CALMODE_ADC_GAIN);
69 ath_dbg(common, CALIBRATE, "starting ADC Gain Calibration\n");
70 break;
71 case ADC_DC_CAL:
72 REG_WRITE(ah, AR_PHY_CALMODE, AR_PHY_CALMODE_ADC_DC_PER);
73 ath_dbg(common, CALIBRATE, "starting ADC DC Calibration\n");
74 break;
75 }
76
77 REG_SET_BIT(ah, AR_PHY_TIMING_CTRL4(0),
78 AR_PHY_TIMING_CTRL4_DO_CAL);
79 }
80
81 static bool ar9002_hw_per_calibration(struct ath_hw *ah,
82 struct ath9k_channel *ichan,
83 u8 rxchainmask,
84 struct ath9k_cal_list *currCal)
85 {
86 struct ath9k_hw_cal_data *caldata = ah->caldata;
87 bool iscaldone = false;
88
89 if (currCal->calState == CAL_RUNNING) {
90 if (!(REG_READ(ah, AR_PHY_TIMING_CTRL4(0)) &
91 AR_PHY_TIMING_CTRL4_DO_CAL)) {
92
93 currCal->calData->calCollect(ah);
94 ah->cal_samples++;
95
96 if (ah->cal_samples >=
97 currCal->calData->calNumSamples) {
98 int i, numChains = 0;
99 for (i = 0; i < AR5416_MAX_CHAINS; i++) {
100 if (rxchainmask & (1 << i))
101 numChains++;
102 }
103
104 currCal->calData->calPostProc(ah, numChains);
105 caldata->CalValid |= currCal->calData->calType;
106 currCal->calState = CAL_DONE;
107 iscaldone = true;
108 } else {
109 ar9002_hw_setup_calibration(ah, currCal);
110 }
111 }
112 } else if (!(caldata->CalValid & currCal->calData->calType)) {
113 ath9k_hw_reset_calibration(ah, currCal);
114 }
115
116 return iscaldone;
117 }
118
119 static void ar9002_hw_iqcal_collect(struct ath_hw *ah)
120 {
121 int i;
122
123 for (i = 0; i < AR5416_MAX_CHAINS; i++) {
124 ah->totalPowerMeasI[i] +=
125 REG_READ(ah, AR_PHY_CAL_MEAS_0(i));
126 ah->totalPowerMeasQ[i] +=
127 REG_READ(ah, AR_PHY_CAL_MEAS_1(i));
128 ah->totalIqCorrMeas[i] +=
129 (int32_t) REG_READ(ah, AR_PHY_CAL_MEAS_2(i));
130 ath_dbg(ath9k_hw_common(ah), CALIBRATE,
131 "%d: Chn %d pmi=0x%08x;pmq=0x%08x;iqcm=0x%08x;\n",
132 ah->cal_samples, i, ah->totalPowerMeasI[i],
133 ah->totalPowerMeasQ[i],
134 ah->totalIqCorrMeas[i]);
135 }
136 }
137
138 static void ar9002_hw_adc_gaincal_collect(struct ath_hw *ah)
139 {
140 int i;
141
142 for (i = 0; i < AR5416_MAX_CHAINS; i++) {
143 ah->totalAdcIOddPhase[i] +=
144 REG_READ(ah, AR_PHY_CAL_MEAS_0(i));
145 ah->totalAdcIEvenPhase[i] +=
146 REG_READ(ah, AR_PHY_CAL_MEAS_1(i));
147 ah->totalAdcQOddPhase[i] +=
148 REG_READ(ah, AR_PHY_CAL_MEAS_2(i));
149 ah->totalAdcQEvenPhase[i] +=
150 REG_READ(ah, AR_PHY_CAL_MEAS_3(i));
151
152 ath_dbg(ath9k_hw_common(ah), CALIBRATE,
153 "%d: Chn %d oddi=0x%08x; eveni=0x%08x; oddq=0x%08x; evenq=0x%08x;\n",
154 ah->cal_samples, i,
155 ah->totalAdcIOddPhase[i],
156 ah->totalAdcIEvenPhase[i],
157 ah->totalAdcQOddPhase[i],
158 ah->totalAdcQEvenPhase[i]);
159 }
160 }
161
162 static void ar9002_hw_adc_dccal_collect(struct ath_hw *ah)
163 {
164 int i;
165
166 for (i = 0; i < AR5416_MAX_CHAINS; i++) {
167 ah->totalAdcDcOffsetIOddPhase[i] +=
168 (int32_t) REG_READ(ah, AR_PHY_CAL_MEAS_0(i));
169 ah->totalAdcDcOffsetIEvenPhase[i] +=
170 (int32_t) REG_READ(ah, AR_PHY_CAL_MEAS_1(i));
171 ah->totalAdcDcOffsetQOddPhase[i] +=
172 (int32_t) REG_READ(ah, AR_PHY_CAL_MEAS_2(i));
173 ah->totalAdcDcOffsetQEvenPhase[i] +=
174 (int32_t) REG_READ(ah, AR_PHY_CAL_MEAS_3(i));
175
176 ath_dbg(ath9k_hw_common(ah), CALIBRATE,
177 "%d: Chn %d oddi=0x%08x; eveni=0x%08x; oddq=0x%08x; evenq=0x%08x;\n",
178 ah->cal_samples, i,
179 ah->totalAdcDcOffsetIOddPhase[i],
180 ah->totalAdcDcOffsetIEvenPhase[i],
181 ah->totalAdcDcOffsetQOddPhase[i],
182 ah->totalAdcDcOffsetQEvenPhase[i]);
183 }
184 }
185
186 static void ar9002_hw_iqcalibrate(struct ath_hw *ah, u8 numChains)
187 {
188 struct ath_common *common = ath9k_hw_common(ah);
189 u32 powerMeasQ, powerMeasI, iqCorrMeas;
190 u32 qCoffDenom, iCoffDenom;
191 int32_t qCoff, iCoff;
192 int iqCorrNeg, i;
193
194 for (i = 0; i < numChains; i++) {
195 powerMeasI = ah->totalPowerMeasI[i];
196 powerMeasQ = ah->totalPowerMeasQ[i];
197 iqCorrMeas = ah->totalIqCorrMeas[i];
198
199 ath_dbg(common, CALIBRATE,
200 "Starting IQ Cal and Correction for Chain %d\n",
201 i);
202
203 ath_dbg(common, CALIBRATE,
204 "Original: Chn %d iq_corr_meas = 0x%08x\n",
205 i, ah->totalIqCorrMeas[i]);
206
207 iqCorrNeg = 0;
208
209 if (iqCorrMeas > 0x80000000) {
210 iqCorrMeas = (0xffffffff - iqCorrMeas) + 1;
211 iqCorrNeg = 1;
212 }
213
214 ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_i = 0x%08x\n",
215 i, powerMeasI);
216 ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_q = 0x%08x\n",
217 i, powerMeasQ);
218 ath_dbg(common, CALIBRATE, "iqCorrNeg is 0x%08x\n", iqCorrNeg);
219
220 iCoffDenom = (powerMeasI / 2 + powerMeasQ / 2) / 128;
221 qCoffDenom = powerMeasQ / 64;
222
223 if ((powerMeasQ != 0) && (iCoffDenom != 0) &&
224 (qCoffDenom != 0)) {
225 iCoff = iqCorrMeas / iCoffDenom;
226 qCoff = powerMeasI / qCoffDenom - 64;
227 ath_dbg(common, CALIBRATE, "Chn %d iCoff = 0x%08x\n",
228 i, iCoff);
229 ath_dbg(common, CALIBRATE, "Chn %d qCoff = 0x%08x\n",
230 i, qCoff);
231
232 iCoff = iCoff & 0x3f;
233 ath_dbg(common, CALIBRATE,
234 "New: Chn %d iCoff = 0x%08x\n", i, iCoff);
235 if (iqCorrNeg == 0x0)
236 iCoff = 0x40 - iCoff;
237
238 if (qCoff > 15)
239 qCoff = 15;
240 else if (qCoff <= -16)
241 qCoff = -16;
242
243 ath_dbg(common, CALIBRATE,
244 "Chn %d : iCoff = 0x%x qCoff = 0x%x\n",
245 i, iCoff, qCoff);
246
247 REG_RMW_FIELD(ah, AR_PHY_TIMING_CTRL4(i),
248 AR_PHY_TIMING_CTRL4_IQCORR_Q_I_COFF,
249 iCoff);
250 REG_RMW_FIELD(ah, AR_PHY_TIMING_CTRL4(i),
251 AR_PHY_TIMING_CTRL4_IQCORR_Q_Q_COFF,
252 qCoff);
253 ath_dbg(common, CALIBRATE,
254 "IQ Cal and Correction done for Chain %d\n",
255 i);
256 }
257 }
258
259 REG_SET_BIT(ah, AR_PHY_TIMING_CTRL4(0),
260 AR_PHY_TIMING_CTRL4_IQCORR_ENABLE);
261 }
262
263 static void ar9002_hw_adc_gaincal_calibrate(struct ath_hw *ah, u8 numChains)
264 {
265 struct ath_common *common = ath9k_hw_common(ah);
266 u32 iOddMeasOffset, iEvenMeasOffset, qOddMeasOffset, qEvenMeasOffset;
267 u32 qGainMismatch, iGainMismatch, val, i;
268
269 for (i = 0; i < numChains; i++) {
270 iOddMeasOffset = ah->totalAdcIOddPhase[i];
271 iEvenMeasOffset = ah->totalAdcIEvenPhase[i];
272 qOddMeasOffset = ah->totalAdcQOddPhase[i];
273 qEvenMeasOffset = ah->totalAdcQEvenPhase[i];
274
275 ath_dbg(common, CALIBRATE,
276 "Starting ADC Gain Cal for Chain %d\n", i);
277
278 ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_odd_i = 0x%08x\n",
279 i, iOddMeasOffset);
280 ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_even_i = 0x%08x\n",
281 i, iEvenMeasOffset);
282 ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_odd_q = 0x%08x\n",
283 i, qOddMeasOffset);
284 ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_even_q = 0x%08x\n",
285 i, qEvenMeasOffset);
286
287 if (iOddMeasOffset != 0 && qEvenMeasOffset != 0) {
288 iGainMismatch =
289 ((iEvenMeasOffset * 32) /
290 iOddMeasOffset) & 0x3f;
291 qGainMismatch =
292 ((qOddMeasOffset * 32) /
293 qEvenMeasOffset) & 0x3f;
294
295 ath_dbg(common, CALIBRATE,
296 "Chn %d gain_mismatch_i = 0x%08x\n",
297 i, iGainMismatch);
298 ath_dbg(common, CALIBRATE,
299 "Chn %d gain_mismatch_q = 0x%08x\n",
300 i, qGainMismatch);
301
302 val = REG_READ(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(i));
303 val &= 0xfffff000;
304 val |= (qGainMismatch) | (iGainMismatch << 6);
305 REG_WRITE(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(i), val);
306
307 ath_dbg(common, CALIBRATE,
308 "ADC Gain Cal done for Chain %d\n", i);
309 }
310 }
311
312 REG_WRITE(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(0),
313 REG_READ(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(0)) |
314 AR_PHY_NEW_ADC_GAIN_CORR_ENABLE);
315 }
316
317 static void ar9002_hw_adc_dccal_calibrate(struct ath_hw *ah, u8 numChains)
318 {
319 struct ath_common *common = ath9k_hw_common(ah);
320 u32 iOddMeasOffset, iEvenMeasOffset, val, i;
321 int32_t qOddMeasOffset, qEvenMeasOffset, qDcMismatch, iDcMismatch;
322 const struct ath9k_percal_data *calData =
323 ah->cal_list_curr->calData;
324 u32 numSamples =
325 (1 << (calData->calCountMax + 5)) * calData->calNumSamples;
326
327 for (i = 0; i < numChains; i++) {
328 iOddMeasOffset = ah->totalAdcDcOffsetIOddPhase[i];
329 iEvenMeasOffset = ah->totalAdcDcOffsetIEvenPhase[i];
330 qOddMeasOffset = ah->totalAdcDcOffsetQOddPhase[i];
331 qEvenMeasOffset = ah->totalAdcDcOffsetQEvenPhase[i];
332
333 ath_dbg(common, CALIBRATE,
334 "Starting ADC DC Offset Cal for Chain %d\n", i);
335
336 ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_odd_i = %d\n",
337 i, iOddMeasOffset);
338 ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_even_i = %d\n",
339 i, iEvenMeasOffset);
340 ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_odd_q = %d\n",
341 i, qOddMeasOffset);
342 ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_even_q = %d\n",
343 i, qEvenMeasOffset);
344
345 iDcMismatch = (((iEvenMeasOffset - iOddMeasOffset) * 2) /
346 numSamples) & 0x1ff;
347 qDcMismatch = (((qOddMeasOffset - qEvenMeasOffset) * 2) /
348 numSamples) & 0x1ff;
349
350 ath_dbg(common, CALIBRATE,
351 "Chn %d dc_offset_mismatch_i = 0x%08x\n",
352 i, iDcMismatch);
353 ath_dbg(common, CALIBRATE,
354 "Chn %d dc_offset_mismatch_q = 0x%08x\n",
355 i, qDcMismatch);
356
357 val = REG_READ(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(i));
358 val &= 0xc0000fff;
359 val |= (qDcMismatch << 12) | (iDcMismatch << 21);
360 REG_WRITE(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(i), val);
361
362 ath_dbg(common, CALIBRATE,
363 "ADC DC Offset Cal done for Chain %d\n", i);
364 }
365
366 REG_WRITE(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(0),
367 REG_READ(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(0)) |
368 AR_PHY_NEW_ADC_DC_OFFSET_CORR_ENABLE);
369 }
370
371 static void ar9287_hw_olc_temp_compensation(struct ath_hw *ah)
372 {
373 u32 rddata;
374 int32_t delta, currPDADC, slope;
375
376 rddata = REG_READ(ah, AR_PHY_TX_PWRCTRL4);
377 currPDADC = MS(rddata, AR_PHY_TX_PWRCTRL_PD_AVG_OUT);
378
379 if (ah->initPDADC == 0 || currPDADC == 0) {
380 /*
381 * Zero value indicates that no frames have been transmitted
382 * yet, can't do temperature compensation until frames are
383 * transmitted.
384 */
385 return;
386 } else {
387 slope = ah->eep_ops->get_eeprom(ah, EEP_TEMPSENSE_SLOPE);
388
389 if (slope == 0) { /* to avoid divide by zero case */
390 delta = 0;
391 } else {
392 delta = ((currPDADC - ah->initPDADC)*4) / slope;
393 }
394 REG_RMW_FIELD(ah, AR_PHY_CH0_TX_PWRCTRL11,
395 AR_PHY_TX_PWRCTRL_OLPC_TEMP_COMP, delta);
396 REG_RMW_FIELD(ah, AR_PHY_CH1_TX_PWRCTRL11,
397 AR_PHY_TX_PWRCTRL_OLPC_TEMP_COMP, delta);
398 }
399 }
400
401 static void ar9280_hw_olc_temp_compensation(struct ath_hw *ah)
402 {
403 u32 rddata, i;
404 int delta, currPDADC, regval;
405
406 rddata = REG_READ(ah, AR_PHY_TX_PWRCTRL4);
407 currPDADC = MS(rddata, AR_PHY_TX_PWRCTRL_PD_AVG_OUT);
408
409 if (ah->initPDADC == 0 || currPDADC == 0)
410 return;
411
412 if (ah->eep_ops->get_eeprom(ah, EEP_DAC_HPWR_5G))
413 delta = (currPDADC - ah->initPDADC + 4) / 8;
414 else
415 delta = (currPDADC - ah->initPDADC + 5) / 10;
416
417 if (delta != ah->PDADCdelta) {
418 ah->PDADCdelta = delta;
419 for (i = 1; i < AR9280_TX_GAIN_TABLE_SIZE; i++) {
420 regval = ah->originalGain[i] - delta;
421 if (regval < 0)
422 regval = 0;
423
424 REG_RMW_FIELD(ah,
425 AR_PHY_TX_GAIN_TBL1 + i * 4,
426 AR_PHY_TX_GAIN, regval);
427 }
428 }
429 }
430
431 static void ar9271_hw_pa_cal(struct ath_hw *ah, bool is_reset)
432 {
433 u32 regVal;
434 unsigned int i;
435 u32 regList[][2] = {
436 { 0x786c, 0 },
437 { 0x7854, 0 },
438 { 0x7820, 0 },
439 { 0x7824, 0 },
440 { 0x7868, 0 },
441 { 0x783c, 0 },
442 { 0x7838, 0 } ,
443 { 0x7828, 0 } ,
444 };
445
446 for (i = 0; i < ARRAY_SIZE(regList); i++)
447 regList[i][1] = REG_READ(ah, regList[i][0]);
448
449 regVal = REG_READ(ah, 0x7834);
450 regVal &= (~(0x1));
451 REG_WRITE(ah, 0x7834, regVal);
452 regVal = REG_READ(ah, 0x9808);
453 regVal |= (0x1 << 27);
454 REG_WRITE(ah, 0x9808, regVal);
455
456 /* 786c,b23,1, pwddac=1 */
457 REG_RMW_FIELD(ah, AR9285_AN_TOP3, AR9285_AN_TOP3_PWDDAC, 1);
458 /* 7854, b5,1, pdrxtxbb=1 */
459 REG_RMW_FIELD(ah, AR9285_AN_RXTXBB1, AR9285_AN_RXTXBB1_PDRXTXBB1, 1);
460 /* 7854, b7,1, pdv2i=1 */
461 REG_RMW_FIELD(ah, AR9285_AN_RXTXBB1, AR9285_AN_RXTXBB1_PDV2I, 1);
462 /* 7854, b8,1, pddacinterface=1 */
463 REG_RMW_FIELD(ah, AR9285_AN_RXTXBB1, AR9285_AN_RXTXBB1_PDDACIF, 1);
464 /* 7824,b12,0, offcal=0 */
465 REG_RMW_FIELD(ah, AR9285_AN_RF2G2, AR9285_AN_RF2G2_OFFCAL, 0);
466 /* 7838, b1,0, pwddb=0 */
467 REG_RMW_FIELD(ah, AR9285_AN_RF2G7, AR9285_AN_RF2G7_PWDDB, 0);
468 /* 7820,b11,0, enpacal=0 */
469 REG_RMW_FIELD(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_ENPACAL, 0);
470 /* 7820,b25,1, pdpadrv1=0 */
471 REG_RMW_FIELD(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_PDPADRV1, 0);
472 /* 7820,b24,0, pdpadrv2=0 */
473 REG_RMW_FIELD(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_PDPADRV2, 0);
474 /* 7820,b23,0, pdpaout=0 */
475 REG_RMW_FIELD(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_PDPAOUT, 0);
476 /* 783c,b14-16,7, padrvgn2tab_0=7 */
477 REG_RMW_FIELD(ah, AR9285_AN_RF2G8, AR9285_AN_RF2G8_PADRVGN2TAB0, 7);
478 /*
479 * 7838,b29-31,0, padrvgn1tab_0=0
480 * does not matter since we turn it off
481 */
482 REG_RMW_FIELD(ah, AR9285_AN_RF2G7, AR9285_AN_RF2G7_PADRVGN2TAB0, 0);
483
484 REG_RMW_FIELD(ah, AR9285_AN_RF2G3, AR9271_AN_RF2G3_CCOMP, 0xfff);
485
486 /* Set:
487 * localmode=1,bmode=1,bmoderxtx=1,synthon=1,
488 * txon=1,paon=1,oscon=1,synthon_force=1
489 */
490 REG_WRITE(ah, AR9285_AN_TOP2, 0xca0358a0);
491 udelay(30);
492 REG_RMW_FIELD(ah, AR9285_AN_RF2G6, AR9271_AN_RF2G6_OFFS, 0);
493
494 /* find off_6_1; */
495 for (i = 6; i > 0; i--) {
496 regVal = REG_READ(ah, 0x7834);
497 regVal |= (1 << (20 + i));
498 REG_WRITE(ah, 0x7834, regVal);
499 udelay(1);
500 /* regVal = REG_READ(ah, 0x7834); */
501 regVal &= (~(0x1 << (20 + i)));
502 regVal |= (MS(REG_READ(ah, 0x7840), AR9285_AN_RXTXBB1_SPARE9)
503 << (20 + i));
504 REG_WRITE(ah, 0x7834, regVal);
505 }
506
507 regVal = (regVal >> 20) & 0x7f;
508
509 /* Update PA cal info */
510 if ((!is_reset) && (ah->pacal_info.prev_offset == regVal)) {
511 if (ah->pacal_info.max_skipcount < MAX_PACAL_SKIPCOUNT)
512 ah->pacal_info.max_skipcount =
513 2 * ah->pacal_info.max_skipcount;
514 ah->pacal_info.skipcount = ah->pacal_info.max_skipcount;
515 } else {
516 ah->pacal_info.max_skipcount = 1;
517 ah->pacal_info.skipcount = 0;
518 ah->pacal_info.prev_offset = regVal;
519 }
520
521 ENABLE_REGWRITE_BUFFER(ah);
522
523 regVal = REG_READ(ah, 0x7834);
524 regVal |= 0x1;
525 REG_WRITE(ah, 0x7834, regVal);
526 regVal = REG_READ(ah, 0x9808);
527 regVal &= (~(0x1 << 27));
528 REG_WRITE(ah, 0x9808, regVal);
529
530 for (i = 0; i < ARRAY_SIZE(regList); i++)
531 REG_WRITE(ah, regList[i][0], regList[i][1]);
532
533 REGWRITE_BUFFER_FLUSH(ah);
534 }
535
536 static inline void ar9285_hw_pa_cal(struct ath_hw *ah, bool is_reset)
537 {
538 struct ath_common *common = ath9k_hw_common(ah);
539 u32 regVal;
540 int i, offset, offs_6_1, offs_0;
541 u32 ccomp_org, reg_field;
542 u32 regList[][2] = {
543 { 0x786c, 0 },
544 { 0x7854, 0 },
545 { 0x7820, 0 },
546 { 0x7824, 0 },
547 { 0x7868, 0 },
548 { 0x783c, 0 },
549 { 0x7838, 0 },
550 };
551
552 ath_dbg(common, CALIBRATE, "Running PA Calibration\n");
553
554 /* PA CAL is not needed for high power solution */
555 if (ah->eep_ops->get_eeprom(ah, EEP_TXGAIN_TYPE) ==
556 AR5416_EEP_TXGAIN_HIGH_POWER)
557 return;
558
559 for (i = 0; i < ARRAY_SIZE(regList); i++)
560 regList[i][1] = REG_READ(ah, regList[i][0]);
561
562 regVal = REG_READ(ah, 0x7834);
563 regVal &= (~(0x1));
564 REG_WRITE(ah, 0x7834, regVal);
565 regVal = REG_READ(ah, 0x9808);
566 regVal |= (0x1 << 27);
567 REG_WRITE(ah, 0x9808, regVal);
568
569 REG_RMW_FIELD(ah, AR9285_AN_TOP3, AR9285_AN_TOP3_PWDDAC, 1);
570 REG_RMW_FIELD(ah, AR9285_AN_RXTXBB1, AR9285_AN_RXTXBB1_PDRXTXBB1, 1);
571 REG_RMW_FIELD(ah, AR9285_AN_RXTXBB1, AR9285_AN_RXTXBB1_PDV2I, 1);
572 REG_RMW_FIELD(ah, AR9285_AN_RXTXBB1, AR9285_AN_RXTXBB1_PDDACIF, 1);
573 REG_RMW_FIELD(ah, AR9285_AN_RF2G2, AR9285_AN_RF2G2_OFFCAL, 0);
574 REG_RMW_FIELD(ah, AR9285_AN_RF2G7, AR9285_AN_RF2G7_PWDDB, 0);
575 REG_RMW_FIELD(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_ENPACAL, 0);
576 REG_RMW_FIELD(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_PDPADRV1, 0);
577 REG_RMW_FIELD(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_PDPADRV2, 0);
578 REG_RMW_FIELD(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_PDPAOUT, 0);
579 REG_RMW_FIELD(ah, AR9285_AN_RF2G8, AR9285_AN_RF2G8_PADRVGN2TAB0, 7);
580 REG_RMW_FIELD(ah, AR9285_AN_RF2G7, AR9285_AN_RF2G7_PADRVGN2TAB0, 0);
581 ccomp_org = MS(REG_READ(ah, AR9285_AN_RF2G6), AR9285_AN_RF2G6_CCOMP);
582 REG_RMW_FIELD(ah, AR9285_AN_RF2G6, AR9285_AN_RF2G6_CCOMP, 0xf);
583
584 REG_WRITE(ah, AR9285_AN_TOP2, 0xca0358a0);
585 udelay(30);
586 REG_RMW_FIELD(ah, AR9285_AN_RF2G6, AR9285_AN_RF2G6_OFFS, 0);
587 REG_RMW_FIELD(ah, AR9285_AN_RF2G3, AR9285_AN_RF2G3_PDVCCOMP, 0);
588
589 for (i = 6; i > 0; i--) {
590 regVal = REG_READ(ah, 0x7834);
591 regVal |= (1 << (19 + i));
592 REG_WRITE(ah, 0x7834, regVal);
593 udelay(1);
594 regVal = REG_READ(ah, 0x7834);
595 regVal &= (~(0x1 << (19 + i)));
596 reg_field = MS(REG_READ(ah, 0x7840), AR9285_AN_RXTXBB1_SPARE9);
597 regVal |= (reg_field << (19 + i));
598 REG_WRITE(ah, 0x7834, regVal);
599 }
600
601 REG_RMW_FIELD(ah, AR9285_AN_RF2G3, AR9285_AN_RF2G3_PDVCCOMP, 1);
602 udelay(1);
603 reg_field = MS(REG_READ(ah, AR9285_AN_RF2G9), AR9285_AN_RXTXBB1_SPARE9);
604 REG_RMW_FIELD(ah, AR9285_AN_RF2G3, AR9285_AN_RF2G3_PDVCCOMP, reg_field);
605 offs_6_1 = MS(REG_READ(ah, AR9285_AN_RF2G6), AR9285_AN_RF2G6_OFFS);
606 offs_0 = MS(REG_READ(ah, AR9285_AN_RF2G3), AR9285_AN_RF2G3_PDVCCOMP);
607
608 offset = (offs_6_1<<1) | offs_0;
609 offset = offset - 0;
610 offs_6_1 = offset>>1;
611 offs_0 = offset & 1;
612
613 if ((!is_reset) && (ah->pacal_info.prev_offset == offset)) {
614 if (ah->pacal_info.max_skipcount < MAX_PACAL_SKIPCOUNT)
615 ah->pacal_info.max_skipcount =
616 2 * ah->pacal_info.max_skipcount;
617 ah->pacal_info.skipcount = ah->pacal_info.max_skipcount;
618 } else {
619 ah->pacal_info.max_skipcount = 1;
620 ah->pacal_info.skipcount = 0;
621 ah->pacal_info.prev_offset = offset;
622 }
623
624 REG_RMW_FIELD(ah, AR9285_AN_RF2G6, AR9285_AN_RF2G6_OFFS, offs_6_1);
625 REG_RMW_FIELD(ah, AR9285_AN_RF2G3, AR9285_AN_RF2G3_PDVCCOMP, offs_0);
626
627 regVal = REG_READ(ah, 0x7834);
628 regVal |= 0x1;
629 REG_WRITE(ah, 0x7834, regVal);
630 regVal = REG_READ(ah, 0x9808);
631 regVal &= (~(0x1 << 27));
632 REG_WRITE(ah, 0x9808, regVal);
633
634 for (i = 0; i < ARRAY_SIZE(regList); i++)
635 REG_WRITE(ah, regList[i][0], regList[i][1]);
636
637 REG_RMW_FIELD(ah, AR9285_AN_RF2G6, AR9285_AN_RF2G6_CCOMP, ccomp_org);
638 }
639
640 static void ar9002_hw_pa_cal(struct ath_hw *ah, bool is_reset)
641 {
642 if (AR_SREV_9271(ah)) {
643 if (is_reset || !ah->pacal_info.skipcount)
644 ar9271_hw_pa_cal(ah, is_reset);
645 else
646 ah->pacal_info.skipcount--;
647 } else if (AR_SREV_9285_12_OR_LATER(ah)) {
648 if (is_reset || !ah->pacal_info.skipcount)
649 ar9285_hw_pa_cal(ah, is_reset);
650 else
651 ah->pacal_info.skipcount--;
652 }
653 }
654
655 static void ar9002_hw_olc_temp_compensation(struct ath_hw *ah)
656 {
657 if (OLC_FOR_AR9287_10_LATER)
658 ar9287_hw_olc_temp_compensation(ah);
659 else if (OLC_FOR_AR9280_20_LATER)
660 ar9280_hw_olc_temp_compensation(ah);
661 }
662
663 static bool ar9002_hw_calibrate(struct ath_hw *ah,
664 struct ath9k_channel *chan,
665 u8 rxchainmask,
666 bool longcal)
667 {
668 bool iscaldone = true;
669 struct ath9k_cal_list *currCal = ah->cal_list_curr;
670 bool nfcal, nfcal_pending = false;
671
672 nfcal = !!(REG_READ(ah, AR_PHY_AGC_CONTROL) & AR_PHY_AGC_CONTROL_NF);
673 if (ah->caldata)
674 nfcal_pending = ah->caldata->nfcal_pending;
675
676 if (currCal && !nfcal &&
677 (currCal->calState == CAL_RUNNING ||
678 currCal->calState == CAL_WAITING)) {
679 iscaldone = ar9002_hw_per_calibration(ah, chan,
680 rxchainmask, currCal);
681 if (iscaldone) {
682 ah->cal_list_curr = currCal = currCal->calNext;
683
684 if (currCal->calState == CAL_WAITING) {
685 iscaldone = false;
686 ath9k_hw_reset_calibration(ah, currCal);
687 }
688 }
689 }
690
691 /* Do NF cal only at longer intervals */
692 if (longcal || nfcal_pending) {
693 /*
694 * Get the value from the previous NF cal and update
695 * history buffer.
696 */
697 if (ath9k_hw_getnf(ah, chan)) {
698 /*
699 * Load the NF from history buffer of the current
700 * channel.
701 * NF is slow time-variant, so it is OK to use a
702 * historical value.
703 */
704 ath9k_hw_loadnf(ah, ah->curchan);
705 }
706
707 if (longcal) {
708 ath9k_hw_start_nfcal(ah, false);
709 /* Do periodic PAOffset Cal */
710 ar9002_hw_pa_cal(ah, false);
711 ar9002_hw_olc_temp_compensation(ah);
712 }
713 }
714
715 return iscaldone;
716 }
717
718 /* Carrier leakage Calibration fix */
719 static bool ar9285_hw_cl_cal(struct ath_hw *ah, struct ath9k_channel *chan)
720 {
721 struct ath_common *common = ath9k_hw_common(ah);
722
723 REG_SET_BIT(ah, AR_PHY_CL_CAL_CTL, AR_PHY_CL_CAL_ENABLE);
724 if (IS_CHAN_HT20(chan)) {
725 REG_SET_BIT(ah, AR_PHY_CL_CAL_CTL, AR_PHY_PARALLEL_CAL_ENABLE);
726 REG_SET_BIT(ah, AR_PHY_TURBO, AR_PHY_FC_DYN2040_EN);
727 REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
728 AR_PHY_AGC_CONTROL_FLTR_CAL);
729 REG_CLR_BIT(ah, AR_PHY_TPCRG1, AR_PHY_TPCRG1_PD_CAL_ENABLE);
730 REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_CAL);
731 if (!ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL,
732 AR_PHY_AGC_CONTROL_CAL, 0, AH_WAIT_TIMEOUT)) {
733 ath_dbg(common, CALIBRATE,
734 "offset calibration failed to complete in 1ms; noisy environment?\n");
735 return false;
736 }
737 REG_CLR_BIT(ah, AR_PHY_TURBO, AR_PHY_FC_DYN2040_EN);
738 REG_CLR_BIT(ah, AR_PHY_CL_CAL_CTL, AR_PHY_PARALLEL_CAL_ENABLE);
739 REG_CLR_BIT(ah, AR_PHY_CL_CAL_CTL, AR_PHY_CL_CAL_ENABLE);
740 }
741 REG_CLR_BIT(ah, AR_PHY_ADC_CTL, AR_PHY_ADC_CTL_OFF_PWDADC);
742 REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_FLTR_CAL);
743 REG_SET_BIT(ah, AR_PHY_TPCRG1, AR_PHY_TPCRG1_PD_CAL_ENABLE);
744 REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_CAL);
745 if (!ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_CAL,
746 0, AH_WAIT_TIMEOUT)) {
747 ath_dbg(common, CALIBRATE,
748 "offset calibration failed to complete in 1ms; noisy environment?\n");
749 return false;
750 }
751
752 REG_SET_BIT(ah, AR_PHY_ADC_CTL, AR_PHY_ADC_CTL_OFF_PWDADC);
753 REG_CLR_BIT(ah, AR_PHY_CL_CAL_CTL, AR_PHY_CL_CAL_ENABLE);
754 REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_FLTR_CAL);
755
756 return true;
757 }
758
759 static bool ar9285_hw_clc(struct ath_hw *ah, struct ath9k_channel *chan)
760 {
761 int i;
762 u_int32_t txgain_max;
763 u_int32_t clc_gain, gain_mask = 0, clc_num = 0;
764 u_int32_t reg_clc_I0, reg_clc_Q0;
765 u_int32_t i0_num = 0;
766 u_int32_t q0_num = 0;
767 u_int32_t total_num = 0;
768 u_int32_t reg_rf2g5_org;
769 bool retv = true;
770
771 if (!(ar9285_hw_cl_cal(ah, chan)))
772 return false;
773
774 txgain_max = MS(REG_READ(ah, AR_PHY_TX_PWRCTRL7),
775 AR_PHY_TX_PWRCTRL_TX_GAIN_TAB_MAX);
776
777 for (i = 0; i < (txgain_max+1); i++) {
778 clc_gain = (REG_READ(ah, (AR_PHY_TX_GAIN_TBL1+(i<<2))) &
779 AR_PHY_TX_GAIN_CLC) >> AR_PHY_TX_GAIN_CLC_S;
780 if (!(gain_mask & (1 << clc_gain))) {
781 gain_mask |= (1 << clc_gain);
782 clc_num++;
783 }
784 }
785
786 for (i = 0; i < clc_num; i++) {
787 reg_clc_I0 = (REG_READ(ah, (AR_PHY_CLC_TBL1 + (i << 2)))
788 & AR_PHY_CLC_I0) >> AR_PHY_CLC_I0_S;
789 reg_clc_Q0 = (REG_READ(ah, (AR_PHY_CLC_TBL1 + (i << 2)))
790 & AR_PHY_CLC_Q0) >> AR_PHY_CLC_Q0_S;
791 if (reg_clc_I0 == 0)
792 i0_num++;
793
794 if (reg_clc_Q0 == 0)
795 q0_num++;
796 }
797 total_num = i0_num + q0_num;
798 if (total_num > AR9285_CLCAL_REDO_THRESH) {
799 reg_rf2g5_org = REG_READ(ah, AR9285_RF2G5);
800 if (AR_SREV_9285E_20(ah)) {
801 REG_WRITE(ah, AR9285_RF2G5,
802 (reg_rf2g5_org & AR9285_RF2G5_IC50TX) |
803 AR9285_RF2G5_IC50TX_XE_SET);
804 } else {
805 REG_WRITE(ah, AR9285_RF2G5,
806 (reg_rf2g5_org & AR9285_RF2G5_IC50TX) |
807 AR9285_RF2G5_IC50TX_SET);
808 }
809 retv = ar9285_hw_cl_cal(ah, chan);
810 REG_WRITE(ah, AR9285_RF2G5, reg_rf2g5_org);
811 }
812 return retv;
813 }
814
815 static bool ar9002_hw_init_cal(struct ath_hw *ah, struct ath9k_channel *chan)
816 {
817 struct ath_common *common = ath9k_hw_common(ah);
818
819 if (AR_SREV_9271(ah)) {
820 if (!ar9285_hw_cl_cal(ah, chan))
821 return false;
822 } else if (AR_SREV_9285(ah) && AR_SREV_9285_12_OR_LATER(ah)) {
823 if (!ar9285_hw_clc(ah, chan))
824 return false;
825 } else {
826 if (AR_SREV_9280_20_OR_LATER(ah)) {
827 if (!AR_SREV_9287_11_OR_LATER(ah))
828 REG_CLR_BIT(ah, AR_PHY_ADC_CTL,
829 AR_PHY_ADC_CTL_OFF_PWDADC);
830 REG_SET_BIT(ah, AR_PHY_AGC_CONTROL,
831 AR_PHY_AGC_CONTROL_FLTR_CAL);
832 }
833
834 /* Calibrate the AGC */
835 REG_WRITE(ah, AR_PHY_AGC_CONTROL,
836 REG_READ(ah, AR_PHY_AGC_CONTROL) |
837 AR_PHY_AGC_CONTROL_CAL);
838
839 /* Poll for offset calibration complete */
840 if (!ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL,
841 AR_PHY_AGC_CONTROL_CAL,
842 0, AH_WAIT_TIMEOUT)) {
843 ath_dbg(common, CALIBRATE,
844 "offset calibration failed to complete in 1ms; noisy environment?\n");
845 return false;
846 }
847
848 if (AR_SREV_9280_20_OR_LATER(ah)) {
849 if (!AR_SREV_9287_11_OR_LATER(ah))
850 REG_SET_BIT(ah, AR_PHY_ADC_CTL,
851 AR_PHY_ADC_CTL_OFF_PWDADC);
852 REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
853 AR_PHY_AGC_CONTROL_FLTR_CAL);
854 }
855 }
856
857 /* Do PA Calibration */
858 ar9002_hw_pa_cal(ah, true);
859
860 if (ah->caldata)
861 ah->caldata->nfcal_pending = true;
862
863 ah->cal_list = ah->cal_list_last = ah->cal_list_curr = NULL;
864
865 /* Enable IQ, ADC Gain and ADC DC offset CALs */
866 if (AR_SREV_9100(ah) || AR_SREV_9160_10_OR_LATER(ah)) {
867 ah->supp_cals = IQ_MISMATCH_CAL;
868
869 if (AR_SREV_9160_10_OR_LATER(ah))
870 ah->supp_cals |= ADC_GAIN_CAL | ADC_DC_CAL;
871
872 if (AR_SREV_9287(ah))
873 ah->supp_cals &= ~ADC_GAIN_CAL;
874
875 if (ar9002_hw_is_cal_supported(ah, chan, ADC_GAIN_CAL)) {
876 INIT_CAL(&ah->adcgain_caldata);
877 INSERT_CAL(ah, &ah->adcgain_caldata);
878 ath_dbg(common, CALIBRATE,
879 "enabling ADC Gain Calibration\n");
880 }
881
882 if (ar9002_hw_is_cal_supported(ah, chan, ADC_DC_CAL)) {
883 INIT_CAL(&ah->adcdc_caldata);
884 INSERT_CAL(ah, &ah->adcdc_caldata);
885 ath_dbg(common, CALIBRATE,
886 "enabling ADC DC Calibration\n");
887 }
888
889 if (ar9002_hw_is_cal_supported(ah, chan, IQ_MISMATCH_CAL)) {
890 INIT_CAL(&ah->iq_caldata);
891 INSERT_CAL(ah, &ah->iq_caldata);
892 ath_dbg(common, CALIBRATE, "enabling IQ Calibration\n");
893 }
894
895 ah->cal_list_curr = ah->cal_list;
896
897 if (ah->cal_list_curr)
898 ath9k_hw_reset_calibration(ah, ah->cal_list_curr);
899 }
900
901 if (ah->caldata)
902 ah->caldata->CalValid = 0;
903
904 return true;
905 }
906
907 static const struct ath9k_percal_data iq_cal_multi_sample = {
908 IQ_MISMATCH_CAL,
909 MAX_CAL_SAMPLES,
910 PER_MIN_LOG_COUNT,
911 ar9002_hw_iqcal_collect,
912 ar9002_hw_iqcalibrate
913 };
914 static const struct ath9k_percal_data iq_cal_single_sample = {
915 IQ_MISMATCH_CAL,
916 MIN_CAL_SAMPLES,
917 PER_MAX_LOG_COUNT,
918 ar9002_hw_iqcal_collect,
919 ar9002_hw_iqcalibrate
920 };
921 static const struct ath9k_percal_data adc_gain_cal_multi_sample = {
922 ADC_GAIN_CAL,
923 MAX_CAL_SAMPLES,
924 PER_MIN_LOG_COUNT,
925 ar9002_hw_adc_gaincal_collect,
926 ar9002_hw_adc_gaincal_calibrate
927 };
928 static const struct ath9k_percal_data adc_gain_cal_single_sample = {
929 ADC_GAIN_CAL,
930 MIN_CAL_SAMPLES,
931 PER_MAX_LOG_COUNT,
932 ar9002_hw_adc_gaincal_collect,
933 ar9002_hw_adc_gaincal_calibrate
934 };
935 static const struct ath9k_percal_data adc_dc_cal_multi_sample = {
936 ADC_DC_CAL,
937 MAX_CAL_SAMPLES,
938 PER_MIN_LOG_COUNT,
939 ar9002_hw_adc_dccal_collect,
940 ar9002_hw_adc_dccal_calibrate
941 };
942 static const struct ath9k_percal_data adc_dc_cal_single_sample = {
943 ADC_DC_CAL,
944 MIN_CAL_SAMPLES,
945 PER_MAX_LOG_COUNT,
946 ar9002_hw_adc_dccal_collect,
947 ar9002_hw_adc_dccal_calibrate
948 };
949
950 static void ar9002_hw_init_cal_settings(struct ath_hw *ah)
951 {
952 if (AR_SREV_9100(ah)) {
953 ah->iq_caldata.calData = &iq_cal_multi_sample;
954 ah->supp_cals = IQ_MISMATCH_CAL;
955 return;
956 }
957
958 if (AR_SREV_9160_10_OR_LATER(ah)) {
959 if (AR_SREV_9280_20_OR_LATER(ah)) {
960 ah->iq_caldata.calData = &iq_cal_single_sample;
961 ah->adcgain_caldata.calData =
962 &adc_gain_cal_single_sample;
963 ah->adcdc_caldata.calData =
964 &adc_dc_cal_single_sample;
965 } else {
966 ah->iq_caldata.calData = &iq_cal_multi_sample;
967 ah->adcgain_caldata.calData =
968 &adc_gain_cal_multi_sample;
969 ah->adcdc_caldata.calData =
970 &adc_dc_cal_multi_sample;
971 }
972 ah->supp_cals = ADC_GAIN_CAL | ADC_DC_CAL | IQ_MISMATCH_CAL;
973
974 if (AR_SREV_9287(ah))
975 ah->supp_cals &= ~ADC_GAIN_CAL;
976 }
977 }
978
979 void ar9002_hw_attach_calib_ops(struct ath_hw *ah)
980 {
981 struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah);
982 struct ath_hw_ops *ops = ath9k_hw_ops(ah);
983
984 priv_ops->init_cal_settings = ar9002_hw_init_cal_settings;
985 priv_ops->init_cal = ar9002_hw_init_cal;
986 priv_ops->setup_calibration = ar9002_hw_setup_calibration;
987
988 ops->calibrate = ar9002_hw_calibrate;
989 }
Linux kernel - Deliverables
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