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Commit | Line | Data |
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795f5e2c | 1 | /* |
5b68138e | 2 | * Copyright (c) 2010-2011 Atheros Communications Inc. |
795f5e2c LR |
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" | |
324c74ad | 20 | #include "ar9003_rtt.h" |
3ebfcdc4 | 21 | #include "ar9003_mci.h" |
795f5e2c | 22 | |
5f0c04ea | 23 | #define MAX_MEASUREMENT MAX_IQCAL_MEASUREMENT |
3782c69d RM |
24 | #define MAX_MAG_DELTA 11 |
25 | #define MAX_PHS_DELTA 10 | |
858b7e36 VT |
26 | |
27 | struct coeff { | |
3782c69d RM |
28 | int mag_coeff[AR9300_MAX_CHAINS][MAX_MEASUREMENT]; |
29 | int phs_coeff[AR9300_MAX_CHAINS][MAX_MEASUREMENT]; | |
858b7e36 VT |
30 | int iqc_coeff[2]; |
31 | }; | |
32 | ||
6497827f FF |
33 | enum ar9003_cal_types { |
34 | IQ_MISMATCH_CAL = BIT(0), | |
35 | TEMP_COMP_CAL = BIT(1), | |
36 | }; | |
37 | ||
795f5e2c LR |
38 | static void ar9003_hw_setup_calibration(struct ath_hw *ah, |
39 | struct ath9k_cal_list *currCal) | |
40 | { | |
4b01931e LR |
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 | ||
d2182b69 | 55 | ath_dbg(common, CALIBRATE, |
226afe68 | 56 | "starting IQ Mismatch Calibration\n"); |
4b01931e LR |
57 | |
58 | /* Kick-off cal */ | |
59 | REG_SET_BIT(ah, AR_PHY_TIMING4, AR_PHY_TIMING4_DO_CAL); | |
60 | break; | |
61 | case TEMP_COMP_CAL: | |
62 | REG_RMW_FIELD(ah, AR_PHY_65NM_CH0_THERM, | |
63 | AR_PHY_65NM_CH0_THERM_LOCAL, 1); | |
64 | REG_RMW_FIELD(ah, AR_PHY_65NM_CH0_THERM, | |
65 | AR_PHY_65NM_CH0_THERM_START, 1); | |
66 | ||
d2182b69 | 67 | ath_dbg(common, CALIBRATE, |
226afe68 | 68 | "starting Temperature Compensation Calibration\n"); |
4b01931e | 69 | break; |
4b01931e | 70 | } |
795f5e2c LR |
71 | } |
72 | ||
df23acaa LR |
73 | /* |
74 | * Generic calibration routine. | |
75 | * Recalibrate the lower PHY chips to account for temperature/environment | |
76 | * changes. | |
77 | */ | |
78 | static bool ar9003_hw_per_calibration(struct ath_hw *ah, | |
79 | struct ath9k_channel *ichan, | |
80 | u8 rxchainmask, | |
81 | struct ath9k_cal_list *currCal) | |
82 | { | |
20bd2a09 | 83 | struct ath9k_hw_cal_data *caldata = ah->caldata; |
df23acaa LR |
84 | /* Cal is assumed not done until explicitly set below */ |
85 | bool iscaldone = false; | |
86 | ||
87 | /* Calibration in progress. */ | |
88 | if (currCal->calState == CAL_RUNNING) { | |
89 | /* Check to see if it has finished. */ | |
90 | if (!(REG_READ(ah, AR_PHY_TIMING4) & AR_PHY_TIMING4_DO_CAL)) { | |
91 | /* | |
92 | * Accumulate cal measures for active chains | |
93 | */ | |
94 | currCal->calData->calCollect(ah); | |
95 | ah->cal_samples++; | |
96 | ||
97 | if (ah->cal_samples >= | |
98 | currCal->calData->calNumSamples) { | |
99 | unsigned int i, numChains = 0; | |
100 | for (i = 0; i < AR9300_MAX_CHAINS; i++) { | |
101 | if (rxchainmask & (1 << i)) | |
102 | numChains++; | |
103 | } | |
104 | ||
105 | /* | |
106 | * Process accumulated data | |
107 | */ | |
108 | currCal->calData->calPostProc(ah, numChains); | |
109 | ||
110 | /* Calibration has finished. */ | |
20bd2a09 | 111 | caldata->CalValid |= currCal->calData->calType; |
df23acaa LR |
112 | currCal->calState = CAL_DONE; |
113 | iscaldone = true; | |
114 | } else { | |
115 | /* | |
116 | * Set-up collection of another sub-sample until we | |
117 | * get desired number | |
118 | */ | |
119 | ar9003_hw_setup_calibration(ah, currCal); | |
120 | } | |
121 | } | |
20bd2a09 | 122 | } else if (!(caldata->CalValid & currCal->calData->calType)) { |
df23acaa LR |
123 | /* If current cal is marked invalid in channel, kick it off */ |
124 | ath9k_hw_reset_calibration(ah, currCal); | |
125 | } | |
126 | ||
127 | return iscaldone; | |
128 | } | |
129 | ||
795f5e2c LR |
130 | static bool ar9003_hw_calibrate(struct ath_hw *ah, |
131 | struct ath9k_channel *chan, | |
132 | u8 rxchainmask, | |
133 | bool longcal) | |
134 | { | |
df23acaa LR |
135 | bool iscaldone = true; |
136 | struct ath9k_cal_list *currCal = ah->cal_list_curr; | |
137 | ||
138 | /* | |
139 | * For given calibration: | |
140 | * 1. Call generic cal routine | |
141 | * 2. When this cal is done (isCalDone) if we have more cals waiting | |
142 | * (eg after reset), mask this to upper layers by not propagating | |
143 | * isCalDone if it is set to TRUE. | |
144 | * Instead, change isCalDone to FALSE and setup the waiting cal(s) | |
145 | * to be run. | |
146 | */ | |
147 | if (currCal && | |
148 | (currCal->calState == CAL_RUNNING || | |
149 | currCal->calState == CAL_WAITING)) { | |
150 | iscaldone = ar9003_hw_per_calibration(ah, chan, | |
151 | rxchainmask, currCal); | |
152 | if (iscaldone) { | |
153 | ah->cal_list_curr = currCal = currCal->calNext; | |
154 | ||
155 | if (currCal->calState == CAL_WAITING) { | |
156 | iscaldone = false; | |
157 | ath9k_hw_reset_calibration(ah, currCal); | |
158 | } | |
159 | } | |
160 | } | |
795f5e2c | 161 | |
54717e53 RM |
162 | /* |
163 | * Do NF cal only at longer intervals. Get the value from | |
164 | * the previous NF cal and update history buffer. | |
165 | */ | |
166 | if (longcal && ath9k_hw_getnf(ah, chan)) { | |
df23acaa LR |
167 | /* |
168 | * Load the NF from history buffer of the current channel. | |
169 | * NF is slow time-variant, so it is OK to use a historical | |
170 | * value. | |
171 | */ | |
172 | ath9k_hw_loadnf(ah, ah->curchan); | |
173 | ||
174 | /* start NF calibration, without updating BB NF register */ | |
00c86590 | 175 | ath9k_hw_start_nfcal(ah, false); |
df23acaa LR |
176 | } |
177 | ||
178 | return iscaldone; | |
795f5e2c LR |
179 | } |
180 | ||
590b7d2f LR |
181 | static void ar9003_hw_iqcal_collect(struct ath_hw *ah) |
182 | { | |
183 | int i; | |
184 | ||
185 | /* Accumulate IQ cal measures for active chains */ | |
186 | for (i = 0; i < AR5416_MAX_CHAINS; i++) { | |
5d48ae78 VT |
187 | if (ah->txchainmask & BIT(i)) { |
188 | ah->totalPowerMeasI[i] += | |
189 | REG_READ(ah, AR_PHY_CAL_MEAS_0(i)); | |
190 | ah->totalPowerMeasQ[i] += | |
191 | REG_READ(ah, AR_PHY_CAL_MEAS_1(i)); | |
192 | ah->totalIqCorrMeas[i] += | |
193 | (int32_t) REG_READ(ah, AR_PHY_CAL_MEAS_2(i)); | |
d2182b69 | 194 | ath_dbg(ath9k_hw_common(ah), CALIBRATE, |
5d48ae78 VT |
195 | "%d: Chn %d pmi=0x%08x;pmq=0x%08x;iqcm=0x%08x;\n", |
196 | ah->cal_samples, i, ah->totalPowerMeasI[i], | |
197 | ah->totalPowerMeasQ[i], | |
198 | ah->totalIqCorrMeas[i]); | |
199 | } | |
590b7d2f LR |
200 | } |
201 | } | |
202 | ||
203 | static void ar9003_hw_iqcalibrate(struct ath_hw *ah, u8 numChains) | |
204 | { | |
205 | struct ath_common *common = ath9k_hw_common(ah); | |
206 | u32 powerMeasQ, powerMeasI, iqCorrMeas; | |
207 | u32 qCoffDenom, iCoffDenom; | |
208 | int32_t qCoff, iCoff; | |
209 | int iqCorrNeg, i; | |
07b2fa5a | 210 | static const u_int32_t offset_array[3] = { |
590b7d2f LR |
211 | AR_PHY_RX_IQCAL_CORR_B0, |
212 | AR_PHY_RX_IQCAL_CORR_B1, | |
213 | AR_PHY_RX_IQCAL_CORR_B2, | |
214 | }; | |
215 | ||
216 | for (i = 0; i < numChains; i++) { | |
217 | powerMeasI = ah->totalPowerMeasI[i]; | |
218 | powerMeasQ = ah->totalPowerMeasQ[i]; | |
219 | iqCorrMeas = ah->totalIqCorrMeas[i]; | |
220 | ||
d2182b69 JP |
221 | ath_dbg(common, CALIBRATE, |
222 | "Starting IQ Cal and Correction for Chain %d\n", i); | |
590b7d2f | 223 | |
d2182b69 | 224 | ath_dbg(common, CALIBRATE, |
a9b2ce03 | 225 | "Original: Chn %d iq_corr_meas = 0x%08x\n", |
226afe68 | 226 | i, ah->totalIqCorrMeas[i]); |
590b7d2f LR |
227 | |
228 | iqCorrNeg = 0; | |
229 | ||
230 | if (iqCorrMeas > 0x80000000) { | |
231 | iqCorrMeas = (0xffffffff - iqCorrMeas) + 1; | |
232 | iqCorrNeg = 1; | |
233 | } | |
234 | ||
d2182b69 JP |
235 | ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_i = 0x%08x\n", |
236 | i, powerMeasI); | |
237 | ath_dbg(common, CALIBRATE, "Chn %d pwr_meas_q = 0x%08x\n", | |
238 | i, powerMeasQ); | |
239 | ath_dbg(common, CALIBRATE, "iqCorrNeg is 0x%08x\n", iqCorrNeg); | |
590b7d2f LR |
240 | |
241 | iCoffDenom = (powerMeasI / 2 + powerMeasQ / 2) / 256; | |
242 | qCoffDenom = powerMeasQ / 64; | |
243 | ||
244 | if ((iCoffDenom != 0) && (qCoffDenom != 0)) { | |
245 | iCoff = iqCorrMeas / iCoffDenom; | |
246 | qCoff = powerMeasI / qCoffDenom - 64; | |
d2182b69 JP |
247 | ath_dbg(common, CALIBRATE, "Chn %d iCoff = 0x%08x\n", |
248 | i, iCoff); | |
249 | ath_dbg(common, CALIBRATE, "Chn %d qCoff = 0x%08x\n", | |
250 | i, qCoff); | |
590b7d2f LR |
251 | |
252 | /* Force bounds on iCoff */ | |
253 | if (iCoff >= 63) | |
254 | iCoff = 63; | |
255 | else if (iCoff <= -63) | |
256 | iCoff = -63; | |
257 | ||
258 | /* Negate iCoff if iqCorrNeg == 0 */ | |
259 | if (iqCorrNeg == 0x0) | |
260 | iCoff = -iCoff; | |
261 | ||
262 | /* Force bounds on qCoff */ | |
263 | if (qCoff >= 63) | |
264 | qCoff = 63; | |
265 | else if (qCoff <= -63) | |
266 | qCoff = -63; | |
267 | ||
268 | iCoff = iCoff & 0x7f; | |
269 | qCoff = qCoff & 0x7f; | |
270 | ||
d2182b69 | 271 | ath_dbg(common, CALIBRATE, |
226afe68 JP |
272 | "Chn %d : iCoff = 0x%x qCoff = 0x%x\n", |
273 | i, iCoff, qCoff); | |
d2182b69 | 274 | ath_dbg(common, CALIBRATE, |
226afe68 JP |
275 | "Register offset (0x%04x) before update = 0x%x\n", |
276 | offset_array[i], | |
277 | REG_READ(ah, offset_array[i])); | |
590b7d2f LR |
278 | |
279 | REG_RMW_FIELD(ah, offset_array[i], | |
280 | AR_PHY_RX_IQCAL_CORR_IQCORR_Q_I_COFF, | |
281 | iCoff); | |
282 | REG_RMW_FIELD(ah, offset_array[i], | |
283 | AR_PHY_RX_IQCAL_CORR_IQCORR_Q_Q_COFF, | |
284 | qCoff); | |
d2182b69 | 285 | ath_dbg(common, CALIBRATE, |
226afe68 JP |
286 | "Register offset (0x%04x) QI COFF (bitfields 0x%08x) after update = 0x%x\n", |
287 | offset_array[i], | |
288 | AR_PHY_RX_IQCAL_CORR_IQCORR_Q_I_COFF, | |
289 | REG_READ(ah, offset_array[i])); | |
d2182b69 | 290 | ath_dbg(common, CALIBRATE, |
226afe68 JP |
291 | "Register offset (0x%04x) QQ COFF (bitfields 0x%08x) after update = 0x%x\n", |
292 | offset_array[i], | |
293 | AR_PHY_RX_IQCAL_CORR_IQCORR_Q_Q_COFF, | |
294 | REG_READ(ah, offset_array[i])); | |
295 | ||
d2182b69 | 296 | ath_dbg(common, CALIBRATE, |
226afe68 | 297 | "IQ Cal and Correction done for Chain %d\n", i); |
590b7d2f LR |
298 | } |
299 | } | |
300 | ||
301 | REG_SET_BIT(ah, AR_PHY_RX_IQCAL_CORR_B0, | |
302 | AR_PHY_RX_IQCAL_CORR_IQCORR_ENABLE); | |
d2182b69 | 303 | ath_dbg(common, CALIBRATE, |
226afe68 JP |
304 | "IQ Cal and Correction (offset 0x%04x) enabled (bit position 0x%08x). New Value 0x%08x\n", |
305 | (unsigned) (AR_PHY_RX_IQCAL_CORR_B0), | |
306 | AR_PHY_RX_IQCAL_CORR_IQCORR_ENABLE, | |
307 | REG_READ(ah, AR_PHY_RX_IQCAL_CORR_B0)); | |
590b7d2f LR |
308 | } |
309 | ||
310 | static const struct ath9k_percal_data iq_cal_single_sample = { | |
311 | IQ_MISMATCH_CAL, | |
312 | MIN_CAL_SAMPLES, | |
313 | PER_MAX_LOG_COUNT, | |
314 | ar9003_hw_iqcal_collect, | |
315 | ar9003_hw_iqcalibrate | |
316 | }; | |
317 | ||
795f5e2c LR |
318 | static void ar9003_hw_init_cal_settings(struct ath_hw *ah) |
319 | { | |
590b7d2f | 320 | ah->iq_caldata.calData = &iq_cal_single_sample; |
795f5e2c LR |
321 | } |
322 | ||
df23acaa LR |
323 | /* |
324 | * solve 4x4 linear equation used in loopback iq cal. | |
325 | */ | |
326 | static bool ar9003_hw_solve_iq_cal(struct ath_hw *ah, | |
327 | s32 sin_2phi_1, | |
328 | s32 cos_2phi_1, | |
329 | s32 sin_2phi_2, | |
330 | s32 cos_2phi_2, | |
331 | s32 mag_a0_d0, | |
332 | s32 phs_a0_d0, | |
333 | s32 mag_a1_d0, | |
334 | s32 phs_a1_d0, | |
335 | s32 solved_eq[]) | |
336 | { | |
337 | s32 f1 = cos_2phi_1 - cos_2phi_2, | |
338 | f3 = sin_2phi_1 - sin_2phi_2, | |
339 | f2; | |
340 | s32 mag_tx, phs_tx, mag_rx, phs_rx; | |
341 | const s32 result_shift = 1 << 15; | |
342 | struct ath_common *common = ath9k_hw_common(ah); | |
343 | ||
344 | f2 = (f1 * f1 + f3 * f3) / result_shift; | |
345 | ||
346 | if (!f2) { | |
d2182b69 | 347 | ath_dbg(common, CALIBRATE, "Divide by 0\n"); |
df23acaa LR |
348 | return false; |
349 | } | |
350 | ||
351 | /* mag mismatch, tx */ | |
352 | mag_tx = f1 * (mag_a0_d0 - mag_a1_d0) + f3 * (phs_a0_d0 - phs_a1_d0); | |
353 | /* phs mismatch, tx */ | |
354 | phs_tx = f3 * (-mag_a0_d0 + mag_a1_d0) + f1 * (phs_a0_d0 - phs_a1_d0); | |
355 | ||
356 | mag_tx = (mag_tx / f2); | |
357 | phs_tx = (phs_tx / f2); | |
358 | ||
359 | /* mag mismatch, rx */ | |
360 | mag_rx = mag_a0_d0 - (cos_2phi_1 * mag_tx + sin_2phi_1 * phs_tx) / | |
361 | result_shift; | |
362 | /* phs mismatch, rx */ | |
363 | phs_rx = phs_a0_d0 + (sin_2phi_1 * mag_tx - cos_2phi_1 * phs_tx) / | |
364 | result_shift; | |
365 | ||
366 | solved_eq[0] = mag_tx; | |
367 | solved_eq[1] = phs_tx; | |
368 | solved_eq[2] = mag_rx; | |
369 | solved_eq[3] = phs_rx; | |
370 | ||
371 | return true; | |
372 | } | |
373 | ||
374 | static s32 ar9003_hw_find_mag_approx(struct ath_hw *ah, s32 in_re, s32 in_im) | |
77d6d39a | 375 | { |
df23acaa LR |
376 | s32 abs_i = abs(in_re), |
377 | abs_q = abs(in_im), | |
378 | max_abs, min_abs; | |
379 | ||
380 | if (abs_i > abs_q) { | |
381 | max_abs = abs_i; | |
382 | min_abs = abs_q; | |
383 | } else { | |
384 | max_abs = abs_q; | |
385 | min_abs = abs_i; | |
386 | } | |
387 | ||
388 | return max_abs - (max_abs / 32) + (min_abs / 8) + (min_abs / 4); | |
389 | } | |
390 | ||
391 | #define DELPT 32 | |
392 | ||
393 | static bool ar9003_hw_calc_iq_corr(struct ath_hw *ah, | |
394 | s32 chain_idx, | |
395 | const s32 iq_res[], | |
396 | s32 iqc_coeff[]) | |
397 | { | |
398 | s32 i2_m_q2_a0_d0, i2_p_q2_a0_d0, iq_corr_a0_d0, | |
399 | i2_m_q2_a0_d1, i2_p_q2_a0_d1, iq_corr_a0_d1, | |
400 | i2_m_q2_a1_d0, i2_p_q2_a1_d0, iq_corr_a1_d0, | |
401 | i2_m_q2_a1_d1, i2_p_q2_a1_d1, iq_corr_a1_d1; | |
402 | s32 mag_a0_d0, mag_a1_d0, mag_a0_d1, mag_a1_d1, | |
403 | phs_a0_d0, phs_a1_d0, phs_a0_d1, phs_a1_d1, | |
404 | sin_2phi_1, cos_2phi_1, | |
405 | sin_2phi_2, cos_2phi_2; | |
406 | s32 mag_tx, phs_tx, mag_rx, phs_rx; | |
407 | s32 solved_eq[4], mag_corr_tx, phs_corr_tx, mag_corr_rx, phs_corr_rx, | |
408 | q_q_coff, q_i_coff; | |
409 | const s32 res_scale = 1 << 15; | |
410 | const s32 delpt_shift = 1 << 8; | |
411 | s32 mag1, mag2; | |
412 | struct ath_common *common = ath9k_hw_common(ah); | |
413 | ||
414 | i2_m_q2_a0_d0 = iq_res[0] & 0xfff; | |
415 | i2_p_q2_a0_d0 = (iq_res[0] >> 12) & 0xfff; | |
416 | iq_corr_a0_d0 = ((iq_res[0] >> 24) & 0xff) + ((iq_res[1] & 0xf) << 8); | |
417 | ||
418 | if (i2_m_q2_a0_d0 > 0x800) | |
419 | i2_m_q2_a0_d0 = -((0xfff - i2_m_q2_a0_d0) + 1); | |
420 | ||
421 | if (i2_p_q2_a0_d0 > 0x800) | |
422 | i2_p_q2_a0_d0 = -((0xfff - i2_p_q2_a0_d0) + 1); | |
423 | ||
424 | if (iq_corr_a0_d0 > 0x800) | |
425 | iq_corr_a0_d0 = -((0xfff - iq_corr_a0_d0) + 1); | |
426 | ||
427 | i2_m_q2_a0_d1 = (iq_res[1] >> 4) & 0xfff; | |
428 | i2_p_q2_a0_d1 = (iq_res[2] & 0xfff); | |
429 | iq_corr_a0_d1 = (iq_res[2] >> 12) & 0xfff; | |
430 | ||
431 | if (i2_m_q2_a0_d1 > 0x800) | |
432 | i2_m_q2_a0_d1 = -((0xfff - i2_m_q2_a0_d1) + 1); | |
433 | ||
434 | if (i2_p_q2_a0_d1 > 0x800) | |
435 | i2_p_q2_a0_d1 = -((0xfff - i2_p_q2_a0_d1) + 1); | |
436 | ||
437 | if (iq_corr_a0_d1 > 0x800) | |
438 | iq_corr_a0_d1 = -((0xfff - iq_corr_a0_d1) + 1); | |
439 | ||
440 | i2_m_q2_a1_d0 = ((iq_res[2] >> 24) & 0xff) + ((iq_res[3] & 0xf) << 8); | |
441 | i2_p_q2_a1_d0 = (iq_res[3] >> 4) & 0xfff; | |
442 | iq_corr_a1_d0 = iq_res[4] & 0xfff; | |
443 | ||
444 | if (i2_m_q2_a1_d0 > 0x800) | |
445 | i2_m_q2_a1_d0 = -((0xfff - i2_m_q2_a1_d0) + 1); | |
446 | ||
447 | if (i2_p_q2_a1_d0 > 0x800) | |
448 | i2_p_q2_a1_d0 = -((0xfff - i2_p_q2_a1_d0) + 1); | |
449 | ||
450 | if (iq_corr_a1_d0 > 0x800) | |
451 | iq_corr_a1_d0 = -((0xfff - iq_corr_a1_d0) + 1); | |
452 | ||
453 | i2_m_q2_a1_d1 = (iq_res[4] >> 12) & 0xfff; | |
454 | i2_p_q2_a1_d1 = ((iq_res[4] >> 24) & 0xff) + ((iq_res[5] & 0xf) << 8); | |
455 | iq_corr_a1_d1 = (iq_res[5] >> 4) & 0xfff; | |
456 | ||
457 | if (i2_m_q2_a1_d1 > 0x800) | |
458 | i2_m_q2_a1_d1 = -((0xfff - i2_m_q2_a1_d1) + 1); | |
459 | ||
460 | if (i2_p_q2_a1_d1 > 0x800) | |
461 | i2_p_q2_a1_d1 = -((0xfff - i2_p_q2_a1_d1) + 1); | |
462 | ||
463 | if (iq_corr_a1_d1 > 0x800) | |
464 | iq_corr_a1_d1 = -((0xfff - iq_corr_a1_d1) + 1); | |
465 | ||
466 | if ((i2_p_q2_a0_d0 == 0) || (i2_p_q2_a0_d1 == 0) || | |
467 | (i2_p_q2_a1_d0 == 0) || (i2_p_q2_a1_d1 == 0)) { | |
d2182b69 | 468 | ath_dbg(common, CALIBRATE, |
226afe68 JP |
469 | "Divide by 0:\n" |
470 | "a0_d0=%d\n" | |
471 | "a0_d1=%d\n" | |
472 | "a2_d0=%d\n" | |
473 | "a1_d1=%d\n", | |
474 | i2_p_q2_a0_d0, i2_p_q2_a0_d1, | |
475 | i2_p_q2_a1_d0, i2_p_q2_a1_d1); | |
df23acaa LR |
476 | return false; |
477 | } | |
478 | ||
479 | mag_a0_d0 = (i2_m_q2_a0_d0 * res_scale) / i2_p_q2_a0_d0; | |
480 | phs_a0_d0 = (iq_corr_a0_d0 * res_scale) / i2_p_q2_a0_d0; | |
481 | ||
482 | mag_a0_d1 = (i2_m_q2_a0_d1 * res_scale) / i2_p_q2_a0_d1; | |
483 | phs_a0_d1 = (iq_corr_a0_d1 * res_scale) / i2_p_q2_a0_d1; | |
484 | ||
485 | mag_a1_d0 = (i2_m_q2_a1_d0 * res_scale) / i2_p_q2_a1_d0; | |
486 | phs_a1_d0 = (iq_corr_a1_d0 * res_scale) / i2_p_q2_a1_d0; | |
487 | ||
488 | mag_a1_d1 = (i2_m_q2_a1_d1 * res_scale) / i2_p_q2_a1_d1; | |
489 | phs_a1_d1 = (iq_corr_a1_d1 * res_scale) / i2_p_q2_a1_d1; | |
490 | ||
491 | /* w/o analog phase shift */ | |
492 | sin_2phi_1 = (((mag_a0_d0 - mag_a0_d1) * delpt_shift) / DELPT); | |
493 | /* w/o analog phase shift */ | |
494 | cos_2phi_1 = (((phs_a0_d1 - phs_a0_d0) * delpt_shift) / DELPT); | |
495 | /* w/ analog phase shift */ | |
496 | sin_2phi_2 = (((mag_a1_d0 - mag_a1_d1) * delpt_shift) / DELPT); | |
497 | /* w/ analog phase shift */ | |
498 | cos_2phi_2 = (((phs_a1_d1 - phs_a1_d0) * delpt_shift) / DELPT); | |
499 | ||
500 | /* | |
501 | * force sin^2 + cos^2 = 1; | |
502 | * find magnitude by approximation | |
503 | */ | |
504 | mag1 = ar9003_hw_find_mag_approx(ah, cos_2phi_1, sin_2phi_1); | |
505 | mag2 = ar9003_hw_find_mag_approx(ah, cos_2phi_2, sin_2phi_2); | |
506 | ||
507 | if ((mag1 == 0) || (mag2 == 0)) { | |
d2182b69 | 508 | ath_dbg(common, CALIBRATE, "Divide by 0: mag1=%d, mag2=%d\n", |
226afe68 | 509 | mag1, mag2); |
df23acaa LR |
510 | return false; |
511 | } | |
512 | ||
513 | /* normalization sin and cos by mag */ | |
514 | sin_2phi_1 = (sin_2phi_1 * res_scale / mag1); | |
515 | cos_2phi_1 = (cos_2phi_1 * res_scale / mag1); | |
516 | sin_2phi_2 = (sin_2phi_2 * res_scale / mag2); | |
517 | cos_2phi_2 = (cos_2phi_2 * res_scale / mag2); | |
518 | ||
519 | /* calculate IQ mismatch */ | |
520 | if (!ar9003_hw_solve_iq_cal(ah, | |
521 | sin_2phi_1, cos_2phi_1, | |
522 | sin_2phi_2, cos_2phi_2, | |
523 | mag_a0_d0, phs_a0_d0, | |
524 | mag_a1_d0, | |
525 | phs_a1_d0, solved_eq)) { | |
d2182b69 JP |
526 | ath_dbg(common, CALIBRATE, |
527 | "Call to ar9003_hw_solve_iq_cal() failed\n"); | |
df23acaa LR |
528 | return false; |
529 | } | |
530 | ||
531 | mag_tx = solved_eq[0]; | |
532 | phs_tx = solved_eq[1]; | |
533 | mag_rx = solved_eq[2]; | |
534 | phs_rx = solved_eq[3]; | |
535 | ||
d2182b69 | 536 | ath_dbg(common, CALIBRATE, |
226afe68 JP |
537 | "chain %d: mag mismatch=%d phase mismatch=%d\n", |
538 | chain_idx, mag_tx/res_scale, phs_tx/res_scale); | |
df23acaa LR |
539 | |
540 | if (res_scale == mag_tx) { | |
d2182b69 | 541 | ath_dbg(common, CALIBRATE, |
226afe68 JP |
542 | "Divide by 0: mag_tx=%d, res_scale=%d\n", |
543 | mag_tx, res_scale); | |
df23acaa LR |
544 | return false; |
545 | } | |
546 | ||
547 | /* calculate and quantize Tx IQ correction factor */ | |
548 | mag_corr_tx = (mag_tx * res_scale) / (res_scale - mag_tx); | |
549 | phs_corr_tx = -phs_tx; | |
550 | ||
551 | q_q_coff = (mag_corr_tx * 128 / res_scale); | |
552 | q_i_coff = (phs_corr_tx * 256 / res_scale); | |
553 | ||
d2182b69 | 554 | ath_dbg(common, CALIBRATE, "tx chain %d: mag corr=%d phase corr=%d\n", |
226afe68 | 555 | chain_idx, q_q_coff, q_i_coff); |
df23acaa LR |
556 | |
557 | if (q_i_coff < -63) | |
558 | q_i_coff = -63; | |
559 | if (q_i_coff > 63) | |
560 | q_i_coff = 63; | |
561 | if (q_q_coff < -63) | |
562 | q_q_coff = -63; | |
563 | if (q_q_coff > 63) | |
564 | q_q_coff = 63; | |
565 | ||
566 | iqc_coeff[0] = (q_q_coff * 128) + q_i_coff; | |
567 | ||
d2182b69 | 568 | ath_dbg(common, CALIBRATE, "tx chain %d: iq corr coeff=%x\n", |
226afe68 | 569 | chain_idx, iqc_coeff[0]); |
df23acaa LR |
570 | |
571 | if (-mag_rx == res_scale) { | |
d2182b69 | 572 | ath_dbg(common, CALIBRATE, |
226afe68 JP |
573 | "Divide by 0: mag_rx=%d, res_scale=%d\n", |
574 | mag_rx, res_scale); | |
df23acaa LR |
575 | return false; |
576 | } | |
577 | ||
578 | /* calculate and quantize Rx IQ correction factors */ | |
579 | mag_corr_rx = (-mag_rx * res_scale) / (res_scale + mag_rx); | |
580 | phs_corr_rx = -phs_rx; | |
581 | ||
582 | q_q_coff = (mag_corr_rx * 128 / res_scale); | |
583 | q_i_coff = (phs_corr_rx * 256 / res_scale); | |
584 | ||
d2182b69 | 585 | ath_dbg(common, CALIBRATE, "rx chain %d: mag corr=%d phase corr=%d\n", |
226afe68 | 586 | chain_idx, q_q_coff, q_i_coff); |
df23acaa LR |
587 | |
588 | if (q_i_coff < -63) | |
589 | q_i_coff = -63; | |
590 | if (q_i_coff > 63) | |
591 | q_i_coff = 63; | |
592 | if (q_q_coff < -63) | |
593 | q_q_coff = -63; | |
594 | if (q_q_coff > 63) | |
595 | q_q_coff = 63; | |
596 | ||
597 | iqc_coeff[1] = (q_q_coff * 128) + q_i_coff; | |
598 | ||
d2182b69 | 599 | ath_dbg(common, CALIBRATE, "rx chain %d: iq corr coeff=%x\n", |
226afe68 | 600 | chain_idx, iqc_coeff[1]); |
df23acaa LR |
601 | |
602 | return true; | |
603 | } | |
604 | ||
3782c69d RM |
605 | static void ar9003_hw_detect_outlier(int *mp_coeff, int nmeasurement, |
606 | int max_delta) | |
858b7e36 | 607 | { |
3782c69d RM |
608 | int mp_max = -64, max_idx = 0; |
609 | int mp_min = 63, min_idx = 0; | |
e948b99d | 610 | int mp_avg = 0, i, outlier_idx = 0, mp_count = 0; |
3782c69d RM |
611 | |
612 | /* find min/max mismatch across all calibrated gains */ | |
613 | for (i = 0; i < nmeasurement; i++) { | |
3782c69d RM |
614 | if (mp_coeff[i] > mp_max) { |
615 | mp_max = mp_coeff[i]; | |
616 | max_idx = i; | |
617 | } else if (mp_coeff[i] < mp_min) { | |
618 | mp_min = mp_coeff[i]; | |
619 | min_idx = i; | |
620 | } | |
621 | } | |
858b7e36 | 622 | |
3782c69d RM |
623 | /* find average (exclude max abs value) */ |
624 | for (i = 0; i < nmeasurement; i++) { | |
625 | if ((abs(mp_coeff[i]) < abs(mp_max)) || | |
e948b99d | 626 | (abs(mp_coeff[i]) < abs(mp_min))) { |
3782c69d | 627 | mp_avg += mp_coeff[i]; |
e948b99d RM |
628 | mp_count++; |
629 | } | |
3782c69d | 630 | } |
e948b99d RM |
631 | |
632 | /* | |
633 | * finding mean magnitude/phase if possible, otherwise | |
634 | * just use the last value as the mean | |
635 | */ | |
636 | if (mp_count) | |
637 | mp_avg /= mp_count; | |
638 | else | |
639 | mp_avg = mp_coeff[nmeasurement - 1]; | |
858b7e36 | 640 | |
3782c69d RM |
641 | /* detect outlier */ |
642 | if (abs(mp_max - mp_min) > max_delta) { | |
643 | if (abs(mp_max - mp_avg) > abs(mp_min - mp_avg)) | |
644 | outlier_idx = max_idx; | |
645 | else | |
646 | outlier_idx = min_idx; | |
e9c10469 RM |
647 | |
648 | mp_coeff[outlier_idx] = mp_avg; | |
3782c69d | 649 | } |
858b7e36 VT |
650 | } |
651 | ||
652 | static void ar9003_hw_tx_iqcal_load_avg_2_passes(struct ath_hw *ah, | |
34013524 RM |
653 | struct coeff *coeff, |
654 | bool is_reusable) | |
858b7e36 | 655 | { |
858b7e36 | 656 | int i, im, nmeasurement; |
858b7e36 | 657 | u32 tx_corr_coeff[MAX_MEASUREMENT][AR9300_MAX_CHAINS]; |
5f0c04ea | 658 | struct ath9k_hw_cal_data *caldata = ah->caldata; |
858b7e36 VT |
659 | |
660 | memset(tx_corr_coeff, 0, sizeof(tx_corr_coeff)); | |
661 | for (i = 0; i < MAX_MEASUREMENT / 2; i++) { | |
662 | tx_corr_coeff[i * 2][0] = tx_corr_coeff[(i * 2) + 1][0] = | |
663 | AR_PHY_TX_IQCAL_CORR_COEFF_B0(i); | |
664 | if (!AR_SREV_9485(ah)) { | |
665 | tx_corr_coeff[i * 2][1] = | |
666 | tx_corr_coeff[(i * 2) + 1][1] = | |
667 | AR_PHY_TX_IQCAL_CORR_COEFF_B1(i); | |
668 | ||
669 | tx_corr_coeff[i * 2][2] = | |
670 | tx_corr_coeff[(i * 2) + 1][2] = | |
671 | AR_PHY_TX_IQCAL_CORR_COEFF_B2(i); | |
672 | } | |
673 | } | |
674 | ||
675 | /* Load the average of 2 passes */ | |
4fb7175b RM |
676 | for (i = 0; i < AR9300_MAX_CHAINS; i++) { |
677 | if (!(ah->txchainmask & (1 << i))) | |
678 | continue; | |
3782c69d RM |
679 | nmeasurement = REG_READ_FIELD(ah, |
680 | AR_PHY_TX_IQCAL_STATUS_B0, | |
681 | AR_PHY_CALIBRATED_GAINS_0); | |
858b7e36 VT |
682 | |
683 | if (nmeasurement > MAX_MEASUREMENT) | |
684 | nmeasurement = MAX_MEASUREMENT; | |
685 | ||
3782c69d RM |
686 | /* detect outlier only if nmeasurement > 1 */ |
687 | if (nmeasurement > 1) { | |
688 | /* Detect magnitude outlier */ | |
689 | ar9003_hw_detect_outlier(coeff->mag_coeff[i], | |
690 | nmeasurement, MAX_MAG_DELTA); | |
858b7e36 | 691 | |
3782c69d RM |
692 | /* Detect phase outlier */ |
693 | ar9003_hw_detect_outlier(coeff->phs_coeff[i], | |
694 | nmeasurement, MAX_PHS_DELTA); | |
695 | } | |
858b7e36 | 696 | |
3782c69d RM |
697 | for (im = 0; im < nmeasurement; im++) { |
698 | ||
699 | coeff->iqc_coeff[0] = (coeff->mag_coeff[i][im] & 0x7f) | | |
700 | ((coeff->phs_coeff[i][im] & 0x7f) << 7); | |
858b7e36 VT |
701 | |
702 | if ((im % 2) == 0) | |
703 | REG_RMW_FIELD(ah, tx_corr_coeff[im][i], | |
704 | AR_PHY_TX_IQCAL_CORR_COEFF_00_COEFF_TABLE, | |
705 | coeff->iqc_coeff[0]); | |
706 | else | |
707 | REG_RMW_FIELD(ah, tx_corr_coeff[im][i], | |
708 | AR_PHY_TX_IQCAL_CORR_COEFF_01_COEFF_TABLE, | |
709 | coeff->iqc_coeff[0]); | |
5f0c04ea RM |
710 | |
711 | if (caldata) | |
712 | caldata->tx_corr_coeff[im][i] = | |
713 | coeff->iqc_coeff[0]; | |
858b7e36 | 714 | } |
5f0c04ea RM |
715 | if (caldata) |
716 | caldata->num_measures[i] = nmeasurement; | |
858b7e36 VT |
717 | } |
718 | ||
719 | REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_3, | |
720 | AR_PHY_TX_IQCAL_CONTROL_3_IQCORR_EN, 0x1); | |
721 | REG_RMW_FIELD(ah, AR_PHY_RX_IQCAL_CORR_B0, | |
722 | AR_PHY_RX_IQCAL_CORR_B0_LOOPBACK_IQCORR_EN, 0x1); | |
34013524 | 723 | |
5f0c04ea | 724 | if (caldata) |
34013524 | 725 | caldata->done_txiqcal_once = is_reusable; |
858b7e36 VT |
726 | |
727 | return; | |
858b7e36 VT |
728 | } |
729 | ||
3782c69d | 730 | static bool ar9003_hw_tx_iq_cal_run(struct ath_hw *ah) |
0b2084bc VT |
731 | { |
732 | struct ath_common *common = ath9k_hw_common(ah); | |
858b7e36 VT |
733 | u8 tx_gain_forced; |
734 | ||
858b7e36 VT |
735 | tx_gain_forced = REG_READ_FIELD(ah, AR_PHY_TX_FORCED_GAIN, |
736 | AR_PHY_TXGAIN_FORCE); | |
737 | if (tx_gain_forced) | |
738 | REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN, | |
739 | AR_PHY_TXGAIN_FORCE, 0); | |
740 | ||
3782c69d RM |
741 | REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_START, |
742 | AR_PHY_TX_IQCAL_START_DO_CAL, 1); | |
743 | ||
744 | if (!ath9k_hw_wait(ah, AR_PHY_TX_IQCAL_START, | |
745 | AR_PHY_TX_IQCAL_START_DO_CAL, 0, | |
746 | AH_WAIT_TIMEOUT)) { | |
d2182b69 | 747 | ath_dbg(common, CALIBRATE, "Tx IQ Cal is not completed\n"); |
3782c69d RM |
748 | return false; |
749 | } | |
750 | return true; | |
858b7e36 VT |
751 | } |
752 | ||
34013524 | 753 | static void ar9003_hw_tx_iq_cal_post_proc(struct ath_hw *ah, bool is_reusable) |
858b7e36 VT |
754 | { |
755 | struct ath_common *common = ath9k_hw_common(ah); | |
756 | const u32 txiqcal_status[AR9300_MAX_CHAINS] = { | |
3782c69d | 757 | AR_PHY_TX_IQCAL_STATUS_B0, |
858b7e36 VT |
758 | AR_PHY_TX_IQCAL_STATUS_B1, |
759 | AR_PHY_TX_IQCAL_STATUS_B2, | |
760 | }; | |
761 | const u_int32_t chan_info_tab[] = { | |
762 | AR_PHY_CHAN_INFO_TAB_0, | |
763 | AR_PHY_CHAN_INFO_TAB_1, | |
764 | AR_PHY_CHAN_INFO_TAB_2, | |
765 | }; | |
766 | struct coeff coeff; | |
767 | s32 iq_res[6]; | |
3782c69d | 768 | int i, im, j; |
858b7e36 VT |
769 | int nmeasurement; |
770 | ||
771 | for (i = 0; i < AR9300_MAX_CHAINS; i++) { | |
4fb7175b RM |
772 | if (!(ah->txchainmask & (1 << i))) |
773 | continue; | |
858b7e36 | 774 | |
3782c69d RM |
775 | nmeasurement = REG_READ_FIELD(ah, |
776 | AR_PHY_TX_IQCAL_STATUS_B0, | |
777 | AR_PHY_CALIBRATED_GAINS_0); | |
778 | if (nmeasurement > MAX_MEASUREMENT) | |
779 | nmeasurement = MAX_MEASUREMENT; | |
858b7e36 | 780 | |
3782c69d | 781 | for (im = 0; im < nmeasurement; im++) { |
d2182b69 JP |
782 | ath_dbg(common, CALIBRATE, |
783 | "Doing Tx IQ Cal for chain %d\n", i); | |
858b7e36 | 784 | |
3782c69d RM |
785 | if (REG_READ(ah, txiqcal_status[i]) & |
786 | AR_PHY_TX_IQCAL_STATUS_FAILED) { | |
d2182b69 JP |
787 | ath_dbg(common, CALIBRATE, |
788 | "Tx IQ Cal failed for chain %d\n", i); | |
3782c69d RM |
789 | goto tx_iqcal_fail; |
790 | } | |
858b7e36 | 791 | |
3782c69d RM |
792 | for (j = 0; j < 3; j++) { |
793 | u32 idx = 2 * j, offset = 4 * (3 * im + j); | |
858b7e36 | 794 | |
3782c69d | 795 | REG_RMW_FIELD(ah, |
858b7e36 VT |
796 | AR_PHY_CHAN_INFO_MEMORY, |
797 | AR_PHY_CHAN_INFO_TAB_S2_READ, | |
798 | 0); | |
799 | ||
3782c69d RM |
800 | /* 32 bits */ |
801 | iq_res[idx] = REG_READ(ah, | |
802 | chan_info_tab[i] + | |
803 | offset); | |
858b7e36 | 804 | |
3782c69d | 805 | REG_RMW_FIELD(ah, |
858b7e36 VT |
806 | AR_PHY_CHAN_INFO_MEMORY, |
807 | AR_PHY_CHAN_INFO_TAB_S2_READ, | |
808 | 1); | |
809 | ||
3782c69d RM |
810 | /* 16 bits */ |
811 | iq_res[idx + 1] = 0xffff & REG_READ(ah, | |
812 | chan_info_tab[i] + offset); | |
858b7e36 | 813 | |
d2182b69 JP |
814 | ath_dbg(common, CALIBRATE, |
815 | "IQ_RES[%d]=0x%x IQ_RES[%d]=0x%x\n", | |
3782c69d RM |
816 | idx, iq_res[idx], idx + 1, |
817 | iq_res[idx + 1]); | |
818 | } | |
858b7e36 | 819 | |
3782c69d RM |
820 | if (!ar9003_hw_calc_iq_corr(ah, i, iq_res, |
821 | coeff.iqc_coeff)) { | |
d2182b69 JP |
822 | ath_dbg(common, CALIBRATE, |
823 | "Failed in calculation of IQ correction\n"); | |
3782c69d RM |
824 | goto tx_iqcal_fail; |
825 | } | |
858b7e36 | 826 | |
3782c69d RM |
827 | coeff.mag_coeff[i][im] = coeff.iqc_coeff[0] & 0x7f; |
828 | coeff.phs_coeff[i][im] = | |
829 | (coeff.iqc_coeff[0] >> 7) & 0x7f; | |
858b7e36 | 830 | |
3782c69d RM |
831 | if (coeff.mag_coeff[i][im] > 63) |
832 | coeff.mag_coeff[i][im] -= 128; | |
833 | if (coeff.phs_coeff[i][im] > 63) | |
834 | coeff.phs_coeff[i][im] -= 128; | |
858b7e36 VT |
835 | } |
836 | } | |
4fb7175b | 837 | ar9003_hw_tx_iqcal_load_avg_2_passes(ah, &coeff, is_reusable); |
858b7e36 VT |
838 | |
839 | return; | |
840 | ||
841 | tx_iqcal_fail: | |
d2182b69 | 842 | ath_dbg(common, CALIBRATE, "Tx IQ Cal failed\n"); |
858b7e36 VT |
843 | return; |
844 | } | |
5f0c04ea RM |
845 | |
846 | static void ar9003_hw_tx_iq_cal_reload(struct ath_hw *ah) | |
847 | { | |
848 | struct ath9k_hw_cal_data *caldata = ah->caldata; | |
849 | u32 tx_corr_coeff[MAX_MEASUREMENT][AR9300_MAX_CHAINS]; | |
850 | int i, im; | |
851 | ||
852 | memset(tx_corr_coeff, 0, sizeof(tx_corr_coeff)); | |
853 | for (i = 0; i < MAX_MEASUREMENT / 2; i++) { | |
854 | tx_corr_coeff[i * 2][0] = tx_corr_coeff[(i * 2) + 1][0] = | |
855 | AR_PHY_TX_IQCAL_CORR_COEFF_B0(i); | |
856 | if (!AR_SREV_9485(ah)) { | |
857 | tx_corr_coeff[i * 2][1] = | |
858 | tx_corr_coeff[(i * 2) + 1][1] = | |
859 | AR_PHY_TX_IQCAL_CORR_COEFF_B1(i); | |
860 | ||
861 | tx_corr_coeff[i * 2][2] = | |
862 | tx_corr_coeff[(i * 2) + 1][2] = | |
863 | AR_PHY_TX_IQCAL_CORR_COEFF_B2(i); | |
864 | } | |
865 | } | |
866 | ||
867 | for (i = 0; i < AR9300_MAX_CHAINS; i++) { | |
868 | if (!(ah->txchainmask & (1 << i))) | |
869 | continue; | |
870 | ||
871 | for (im = 0; im < caldata->num_measures[i]; im++) { | |
872 | if ((im % 2) == 0) | |
873 | REG_RMW_FIELD(ah, tx_corr_coeff[im][i], | |
874 | AR_PHY_TX_IQCAL_CORR_COEFF_00_COEFF_TABLE, | |
875 | caldata->tx_corr_coeff[im][i]); | |
876 | else | |
877 | REG_RMW_FIELD(ah, tx_corr_coeff[im][i], | |
878 | AR_PHY_TX_IQCAL_CORR_COEFF_01_COEFF_TABLE, | |
879 | caldata->tx_corr_coeff[im][i]); | |
880 | } | |
881 | } | |
882 | ||
883 | REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_3, | |
884 | AR_PHY_TX_IQCAL_CONTROL_3_IQCORR_EN, 0x1); | |
885 | REG_RMW_FIELD(ah, AR_PHY_RX_IQCAL_CORR_B0, | |
886 | AR_PHY_RX_IQCAL_CORR_B0_LOOPBACK_IQCORR_EN, 0x1); | |
887 | } | |
888 | ||
df23acaa LR |
889 | static bool ar9003_hw_init_cal(struct ath_hw *ah, |
890 | struct ath9k_channel *chan) | |
891 | { | |
892 | struct ath_common *common = ath9k_hw_common(ah); | |
5f0c04ea | 893 | struct ath9k_hw_cal_data *caldata = ah->caldata; |
77a5a664 | 894 | bool txiqcal_done = false, txclcal_done = false; |
324c74ad RM |
895 | bool is_reusable = true, status = true; |
896 | bool run_rtt_cal = false, run_agc_cal; | |
897 | bool rtt = !!(ah->caps.hw_caps & ATH9K_HW_CAP_RTT); | |
898 | u32 agc_ctrl = 0, agc_supp_cals = AR_PHY_AGC_CONTROL_OFFSET_CAL | | |
899 | AR_PHY_AGC_CONTROL_FLTR_CAL | | |
900 | AR_PHY_AGC_CONTROL_PKDET_CAL; | |
8ad74c4d | 901 | int i, j; |
77a5a664 RM |
902 | u32 cl_idx[AR9300_MAX_CHAINS] = { AR_PHY_CL_TAB_0, |
903 | AR_PHY_CL_TAB_1, | |
904 | AR_PHY_CL_TAB_2 }; | |
905 | ||
324c74ad RM |
906 | if (rtt) { |
907 | if (!ar9003_hw_rtt_restore(ah, chan)) | |
908 | run_rtt_cal = true; | |
909 | ||
8a90555f SM |
910 | if (run_rtt_cal) |
911 | ath_dbg(common, CALIBRATE, "RTT calibration to be done\n"); | |
324c74ad | 912 | } |
8a90555f | 913 | |
324c74ad RM |
914 | run_agc_cal = run_rtt_cal; |
915 | ||
916 | if (run_rtt_cal) { | |
917 | ar9003_hw_rtt_enable(ah); | |
918 | ar9003_hw_rtt_set_mask(ah, 0x00); | |
919 | ar9003_hw_rtt_clear_hist(ah); | |
920 | } | |
921 | ||
922 | if (rtt && !run_rtt_cal) { | |
923 | agc_ctrl = REG_READ(ah, AR_PHY_AGC_CONTROL); | |
924 | agc_supp_cals &= agc_ctrl; | |
925 | agc_ctrl &= ~(AR_PHY_AGC_CONTROL_OFFSET_CAL | | |
926 | AR_PHY_AGC_CONTROL_FLTR_CAL | | |
927 | AR_PHY_AGC_CONTROL_PKDET_CAL); | |
928 | REG_WRITE(ah, AR_PHY_AGC_CONTROL, agc_ctrl); | |
929 | } | |
930 | ||
8ad74c4d | 931 | if (ah->enabled_cals & TX_CL_CAL) { |
77a5a664 RM |
932 | if (caldata && caldata->done_txclcal_once) |
933 | REG_CLR_BIT(ah, AR_PHY_CL_CAL_CTL, | |
934 | AR_PHY_CL_CAL_ENABLE); | |
324c74ad | 935 | else { |
77a5a664 RM |
936 | REG_SET_BIT(ah, AR_PHY_CL_CAL_CTL, |
937 | AR_PHY_CL_CAL_ENABLE); | |
324c74ad RM |
938 | run_agc_cal = true; |
939 | } | |
77a5a664 | 940 | } |
df23acaa | 941 | |
8ad74c4d RM |
942 | if (!(ah->enabled_cals & TX_IQ_CAL)) |
943 | goto skip_tx_iqcal; | |
944 | ||
c5395b67 | 945 | /* Do Tx IQ Calibration */ |
3782c69d RM |
946 | REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_1, |
947 | AR_PHY_TX_IQCAL_CONTROL_1_IQCORR_I_Q_COFF_DELPT, | |
948 | DELPT); | |
858b7e36 | 949 | |
3782c69d RM |
950 | /* |
951 | * For AR9485 or later chips, TxIQ cal runs as part of | |
952 | * AGC calibration | |
953 | */ | |
8ad74c4d | 954 | if (ah->enabled_cals & TX_IQ_ON_AGC_CAL) { |
5f0c04ea RM |
955 | if (caldata && !caldata->done_txiqcal_once) |
956 | REG_SET_BIT(ah, AR_PHY_TX_IQCAL_CONTROL_0, | |
957 | AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL); | |
958 | else | |
959 | REG_CLR_BIT(ah, AR_PHY_TX_IQCAL_CONTROL_0, | |
960 | AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL); | |
324c74ad | 961 | txiqcal_done = run_agc_cal = true; |
8ad74c4d | 962 | goto skip_tx_iqcal; |
324c74ad RM |
963 | } else if (caldata && !caldata->done_txiqcal_once) |
964 | run_agc_cal = true; | |
965 | ||
5955b2b0 | 966 | if (ath9k_hw_mci_is_enabled(ah) && IS_CHAN_2GHZ(chan) && run_agc_cal) |
f2f408ef | 967 | ar9003_mci_init_cal_req(ah, &is_reusable); |
3ebfcdc4 | 968 | |
e5d821a4 FF |
969 | if (!(IS_CHAN_HALF_RATE(chan) || IS_CHAN_QUARTER_RATE(chan))) { |
970 | txiqcal_done = ar9003_hw_tx_iq_cal_run(ah); | |
971 | REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_DIS); | |
972 | udelay(5); | |
973 | REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN); | |
974 | } | |
c5395b67 | 975 | |
8ad74c4d | 976 | skip_tx_iqcal: |
a126ff51 | 977 | if (run_agc_cal || !(ah->ah_flags & AH_FASTCC)) { |
324c74ad RM |
978 | /* Calibrate the AGC */ |
979 | REG_WRITE(ah, AR_PHY_AGC_CONTROL, | |
980 | REG_READ(ah, AR_PHY_AGC_CONTROL) | | |
981 | AR_PHY_AGC_CONTROL_CAL); | |
982 | ||
983 | /* Poll for offset calibration complete */ | |
984 | status = ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL, | |
985 | AR_PHY_AGC_CONTROL_CAL, | |
986 | 0, AH_WAIT_TIMEOUT); | |
987 | } | |
3ebfcdc4 | 988 | |
5955b2b0 | 989 | if (ath9k_hw_mci_is_enabled(ah) && IS_CHAN_2GHZ(chan) && run_agc_cal) |
f2f408ef | 990 | ar9003_mci_init_cal_done(ah); |
3ebfcdc4 | 991 | |
324c74ad RM |
992 | if (rtt && !run_rtt_cal) { |
993 | agc_ctrl |= agc_supp_cals; | |
994 | REG_WRITE(ah, AR_PHY_AGC_CONTROL, agc_ctrl); | |
995 | } | |
996 | ||
997 | if (!status) { | |
998 | if (run_rtt_cal) | |
999 | ar9003_hw_rtt_disable(ah); | |
1000 | ||
d2182b69 JP |
1001 | ath_dbg(common, CALIBRATE, |
1002 | "offset calibration failed to complete in 1ms; noisy environment?\n"); | |
df23acaa LR |
1003 | return false; |
1004 | } | |
1005 | ||
3782c69d | 1006 | if (txiqcal_done) |
34013524 | 1007 | ar9003_hw_tx_iq_cal_post_proc(ah, is_reusable); |
5f0c04ea RM |
1008 | else if (caldata && caldata->done_txiqcal_once) |
1009 | ar9003_hw_tx_iq_cal_reload(ah); | |
858b7e36 | 1010 | |
77a5a664 | 1011 | #define CL_TAB_ENTRY(reg_base) (reg_base + (4 * j)) |
8ad74c4d | 1012 | if (caldata && (ah->enabled_cals & TX_CL_CAL)) { |
77a5a664 RM |
1013 | txclcal_done = !!(REG_READ(ah, AR_PHY_AGC_CONTROL) & |
1014 | AR_PHY_AGC_CONTROL_CLC_SUCCESS); | |
1015 | if (caldata->done_txclcal_once) { | |
1016 | for (i = 0; i < AR9300_MAX_CHAINS; i++) { | |
1017 | if (!(ah->txchainmask & (1 << i))) | |
1018 | continue; | |
1019 | for (j = 0; j < MAX_CL_TAB_ENTRY; j++) | |
1020 | REG_WRITE(ah, CL_TAB_ENTRY(cl_idx[i]), | |
1021 | caldata->tx_clcal[i][j]); | |
1022 | } | |
1023 | } else if (is_reusable && txclcal_done) { | |
1024 | for (i = 0; i < AR9300_MAX_CHAINS; i++) { | |
1025 | if (!(ah->txchainmask & (1 << i))) | |
1026 | continue; | |
1027 | for (j = 0; j < MAX_CL_TAB_ENTRY; j++) | |
1028 | caldata->tx_clcal[i][j] = | |
1029 | REG_READ(ah, | |
1030 | CL_TAB_ENTRY(cl_idx[i])); | |
1031 | } | |
1032 | caldata->done_txclcal_once = true; | |
1033 | } | |
1034 | } | |
1035 | #undef CL_TAB_ENTRY | |
1036 | ||
324c74ad | 1037 | if (run_rtt_cal && caldata) { |
8a90555f SM |
1038 | if (is_reusable) { |
1039 | if (!ath9k_hw_rfbus_req(ah)) | |
1040 | ath_err(ath9k_hw_common(ah), | |
1041 | "Could not stop baseband\n"); | |
1042 | else | |
1043 | ar9003_hw_rtt_fill_hist(ah); | |
324c74ad | 1044 | |
8a90555f | 1045 | ath9k_hw_rfbus_done(ah); |
324c74ad RM |
1046 | } |
1047 | ||
1048 | ar9003_hw_rtt_disable(ah); | |
1049 | } | |
1050 | ||
df23acaa LR |
1051 | /* Initialize list pointers */ |
1052 | ah->cal_list = ah->cal_list_last = ah->cal_list_curr = NULL; | |
6497827f | 1053 | ah->supp_cals = IQ_MISMATCH_CAL; |
df23acaa | 1054 | |
6497827f | 1055 | if (ah->supp_cals & IQ_MISMATCH_CAL) { |
df23acaa LR |
1056 | INIT_CAL(&ah->iq_caldata); |
1057 | INSERT_CAL(ah, &ah->iq_caldata); | |
d2182b69 | 1058 | ath_dbg(common, CALIBRATE, "enabling IQ Calibration\n"); |
df23acaa LR |
1059 | } |
1060 | ||
6497827f | 1061 | if (ah->supp_cals & TEMP_COMP_CAL) { |
df23acaa LR |
1062 | INIT_CAL(&ah->tempCompCalData); |
1063 | INSERT_CAL(ah, &ah->tempCompCalData); | |
d2182b69 JP |
1064 | ath_dbg(common, CALIBRATE, |
1065 | "enabling Temperature Compensation Calibration\n"); | |
df23acaa LR |
1066 | } |
1067 | ||
1068 | /* Initialize current pointer to first element in list */ | |
1069 | ah->cal_list_curr = ah->cal_list; | |
1070 | ||
1071 | if (ah->cal_list_curr) | |
1072 | ath9k_hw_reset_calibration(ah, ah->cal_list_curr); | |
1073 | ||
5f0c04ea RM |
1074 | if (caldata) |
1075 | caldata->CalValid = 0; | |
df23acaa LR |
1076 | |
1077 | return true; | |
77d6d39a LR |
1078 | } |
1079 | ||
795f5e2c LR |
1080 | void ar9003_hw_attach_calib_ops(struct ath_hw *ah) |
1081 | { | |
1082 | struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah); | |
1083 | struct ath_hw_ops *ops = ath9k_hw_ops(ah); | |
1084 | ||
1085 | priv_ops->init_cal_settings = ar9003_hw_init_cal_settings; | |
1086 | priv_ops->init_cal = ar9003_hw_init_cal; | |
1087 | priv_ops->setup_calibration = ar9003_hw_setup_calibration; | |
795f5e2c LR |
1088 | |
1089 | ops->calibrate = ar9003_hw_calibrate; | |
1090 | } |