Commit | Line | Data |
---|---|---|
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 | 278 | |
6f37ff96 RM |
279 | if (AR_SREV_9565(ah) && |
280 | (iCoff == 63 || qCoff == 63 || | |
281 | iCoff == -63 || qCoff == -63)) | |
282 | return; | |
283 | ||
590b7d2f LR |
284 | REG_RMW_FIELD(ah, offset_array[i], |
285 | AR_PHY_RX_IQCAL_CORR_IQCORR_Q_I_COFF, | |
286 | iCoff); | |
287 | REG_RMW_FIELD(ah, offset_array[i], | |
288 | AR_PHY_RX_IQCAL_CORR_IQCORR_Q_Q_COFF, | |
289 | qCoff); | |
d2182b69 | 290 | ath_dbg(common, CALIBRATE, |
226afe68 JP |
291 | "Register offset (0x%04x) QI COFF (bitfields 0x%08x) after update = 0x%x\n", |
292 | offset_array[i], | |
293 | AR_PHY_RX_IQCAL_CORR_IQCORR_Q_I_COFF, | |
294 | REG_READ(ah, offset_array[i])); | |
d2182b69 | 295 | ath_dbg(common, CALIBRATE, |
226afe68 JP |
296 | "Register offset (0x%04x) QQ COFF (bitfields 0x%08x) after update = 0x%x\n", |
297 | offset_array[i], | |
298 | AR_PHY_RX_IQCAL_CORR_IQCORR_Q_Q_COFF, | |
299 | REG_READ(ah, offset_array[i])); | |
300 | ||
d2182b69 | 301 | ath_dbg(common, CALIBRATE, |
226afe68 | 302 | "IQ Cal and Correction done for Chain %d\n", i); |
590b7d2f LR |
303 | } |
304 | } | |
305 | ||
306 | REG_SET_BIT(ah, AR_PHY_RX_IQCAL_CORR_B0, | |
307 | AR_PHY_RX_IQCAL_CORR_IQCORR_ENABLE); | |
d2182b69 | 308 | ath_dbg(common, CALIBRATE, |
226afe68 JP |
309 | "IQ Cal and Correction (offset 0x%04x) enabled (bit position 0x%08x). New Value 0x%08x\n", |
310 | (unsigned) (AR_PHY_RX_IQCAL_CORR_B0), | |
311 | AR_PHY_RX_IQCAL_CORR_IQCORR_ENABLE, | |
312 | REG_READ(ah, AR_PHY_RX_IQCAL_CORR_B0)); | |
590b7d2f LR |
313 | } |
314 | ||
315 | static const struct ath9k_percal_data iq_cal_single_sample = { | |
316 | IQ_MISMATCH_CAL, | |
317 | MIN_CAL_SAMPLES, | |
318 | PER_MAX_LOG_COUNT, | |
319 | ar9003_hw_iqcal_collect, | |
320 | ar9003_hw_iqcalibrate | |
321 | }; | |
322 | ||
795f5e2c LR |
323 | static void ar9003_hw_init_cal_settings(struct ath_hw *ah) |
324 | { | |
590b7d2f | 325 | ah->iq_caldata.calData = &iq_cal_single_sample; |
795f5e2c LR |
326 | } |
327 | ||
df23acaa LR |
328 | /* |
329 | * solve 4x4 linear equation used in loopback iq cal. | |
330 | */ | |
331 | static bool ar9003_hw_solve_iq_cal(struct ath_hw *ah, | |
332 | s32 sin_2phi_1, | |
333 | s32 cos_2phi_1, | |
334 | s32 sin_2phi_2, | |
335 | s32 cos_2phi_2, | |
336 | s32 mag_a0_d0, | |
337 | s32 phs_a0_d0, | |
338 | s32 mag_a1_d0, | |
339 | s32 phs_a1_d0, | |
340 | s32 solved_eq[]) | |
341 | { | |
342 | s32 f1 = cos_2phi_1 - cos_2phi_2, | |
343 | f3 = sin_2phi_1 - sin_2phi_2, | |
344 | f2; | |
345 | s32 mag_tx, phs_tx, mag_rx, phs_rx; | |
346 | const s32 result_shift = 1 << 15; | |
347 | struct ath_common *common = ath9k_hw_common(ah); | |
348 | ||
349 | f2 = (f1 * f1 + f3 * f3) / result_shift; | |
350 | ||
351 | if (!f2) { | |
d2182b69 | 352 | ath_dbg(common, CALIBRATE, "Divide by 0\n"); |
df23acaa LR |
353 | return false; |
354 | } | |
355 | ||
356 | /* mag mismatch, tx */ | |
357 | mag_tx = f1 * (mag_a0_d0 - mag_a1_d0) + f3 * (phs_a0_d0 - phs_a1_d0); | |
358 | /* phs mismatch, tx */ | |
359 | phs_tx = f3 * (-mag_a0_d0 + mag_a1_d0) + f1 * (phs_a0_d0 - phs_a1_d0); | |
360 | ||
361 | mag_tx = (mag_tx / f2); | |
362 | phs_tx = (phs_tx / f2); | |
363 | ||
364 | /* mag mismatch, rx */ | |
365 | mag_rx = mag_a0_d0 - (cos_2phi_1 * mag_tx + sin_2phi_1 * phs_tx) / | |
366 | result_shift; | |
367 | /* phs mismatch, rx */ | |
368 | phs_rx = phs_a0_d0 + (sin_2phi_1 * mag_tx - cos_2phi_1 * phs_tx) / | |
369 | result_shift; | |
370 | ||
371 | solved_eq[0] = mag_tx; | |
372 | solved_eq[1] = phs_tx; | |
373 | solved_eq[2] = mag_rx; | |
374 | solved_eq[3] = phs_rx; | |
375 | ||
376 | return true; | |
377 | } | |
378 | ||
379 | static s32 ar9003_hw_find_mag_approx(struct ath_hw *ah, s32 in_re, s32 in_im) | |
77d6d39a | 380 | { |
df23acaa LR |
381 | s32 abs_i = abs(in_re), |
382 | abs_q = abs(in_im), | |
383 | max_abs, min_abs; | |
384 | ||
385 | if (abs_i > abs_q) { | |
386 | max_abs = abs_i; | |
387 | min_abs = abs_q; | |
388 | } else { | |
389 | max_abs = abs_q; | |
390 | min_abs = abs_i; | |
391 | } | |
392 | ||
393 | return max_abs - (max_abs / 32) + (min_abs / 8) + (min_abs / 4); | |
394 | } | |
395 | ||
396 | #define DELPT 32 | |
397 | ||
398 | static bool ar9003_hw_calc_iq_corr(struct ath_hw *ah, | |
399 | s32 chain_idx, | |
400 | const s32 iq_res[], | |
401 | s32 iqc_coeff[]) | |
402 | { | |
403 | s32 i2_m_q2_a0_d0, i2_p_q2_a0_d0, iq_corr_a0_d0, | |
404 | i2_m_q2_a0_d1, i2_p_q2_a0_d1, iq_corr_a0_d1, | |
405 | i2_m_q2_a1_d0, i2_p_q2_a1_d0, iq_corr_a1_d0, | |
406 | i2_m_q2_a1_d1, i2_p_q2_a1_d1, iq_corr_a1_d1; | |
407 | s32 mag_a0_d0, mag_a1_d0, mag_a0_d1, mag_a1_d1, | |
408 | phs_a0_d0, phs_a1_d0, phs_a0_d1, phs_a1_d1, | |
409 | sin_2phi_1, cos_2phi_1, | |
410 | sin_2phi_2, cos_2phi_2; | |
411 | s32 mag_tx, phs_tx, mag_rx, phs_rx; | |
412 | s32 solved_eq[4], mag_corr_tx, phs_corr_tx, mag_corr_rx, phs_corr_rx, | |
413 | q_q_coff, q_i_coff; | |
414 | const s32 res_scale = 1 << 15; | |
415 | const s32 delpt_shift = 1 << 8; | |
416 | s32 mag1, mag2; | |
417 | struct ath_common *common = ath9k_hw_common(ah); | |
418 | ||
419 | i2_m_q2_a0_d0 = iq_res[0] & 0xfff; | |
420 | i2_p_q2_a0_d0 = (iq_res[0] >> 12) & 0xfff; | |
421 | iq_corr_a0_d0 = ((iq_res[0] >> 24) & 0xff) + ((iq_res[1] & 0xf) << 8); | |
422 | ||
423 | if (i2_m_q2_a0_d0 > 0x800) | |
424 | i2_m_q2_a0_d0 = -((0xfff - i2_m_q2_a0_d0) + 1); | |
425 | ||
426 | if (i2_p_q2_a0_d0 > 0x800) | |
427 | i2_p_q2_a0_d0 = -((0xfff - i2_p_q2_a0_d0) + 1); | |
428 | ||
429 | if (iq_corr_a0_d0 > 0x800) | |
430 | iq_corr_a0_d0 = -((0xfff - iq_corr_a0_d0) + 1); | |
431 | ||
432 | i2_m_q2_a0_d1 = (iq_res[1] >> 4) & 0xfff; | |
433 | i2_p_q2_a0_d1 = (iq_res[2] & 0xfff); | |
434 | iq_corr_a0_d1 = (iq_res[2] >> 12) & 0xfff; | |
435 | ||
436 | if (i2_m_q2_a0_d1 > 0x800) | |
437 | i2_m_q2_a0_d1 = -((0xfff - i2_m_q2_a0_d1) + 1); | |
438 | ||
439 | if (i2_p_q2_a0_d1 > 0x800) | |
440 | i2_p_q2_a0_d1 = -((0xfff - i2_p_q2_a0_d1) + 1); | |
441 | ||
442 | if (iq_corr_a0_d1 > 0x800) | |
443 | iq_corr_a0_d1 = -((0xfff - iq_corr_a0_d1) + 1); | |
444 | ||
445 | i2_m_q2_a1_d0 = ((iq_res[2] >> 24) & 0xff) + ((iq_res[3] & 0xf) << 8); | |
446 | i2_p_q2_a1_d0 = (iq_res[3] >> 4) & 0xfff; | |
447 | iq_corr_a1_d0 = iq_res[4] & 0xfff; | |
448 | ||
449 | if (i2_m_q2_a1_d0 > 0x800) | |
450 | i2_m_q2_a1_d0 = -((0xfff - i2_m_q2_a1_d0) + 1); | |
451 | ||
452 | if (i2_p_q2_a1_d0 > 0x800) | |
453 | i2_p_q2_a1_d0 = -((0xfff - i2_p_q2_a1_d0) + 1); | |
454 | ||
455 | if (iq_corr_a1_d0 > 0x800) | |
456 | iq_corr_a1_d0 = -((0xfff - iq_corr_a1_d0) + 1); | |
457 | ||
458 | i2_m_q2_a1_d1 = (iq_res[4] >> 12) & 0xfff; | |
459 | i2_p_q2_a1_d1 = ((iq_res[4] >> 24) & 0xff) + ((iq_res[5] & 0xf) << 8); | |
460 | iq_corr_a1_d1 = (iq_res[5] >> 4) & 0xfff; | |
461 | ||
462 | if (i2_m_q2_a1_d1 > 0x800) | |
463 | i2_m_q2_a1_d1 = -((0xfff - i2_m_q2_a1_d1) + 1); | |
464 | ||
465 | if (i2_p_q2_a1_d1 > 0x800) | |
466 | i2_p_q2_a1_d1 = -((0xfff - i2_p_q2_a1_d1) + 1); | |
467 | ||
468 | if (iq_corr_a1_d1 > 0x800) | |
469 | iq_corr_a1_d1 = -((0xfff - iq_corr_a1_d1) + 1); | |
470 | ||
471 | if ((i2_p_q2_a0_d0 == 0) || (i2_p_q2_a0_d1 == 0) || | |
472 | (i2_p_q2_a1_d0 == 0) || (i2_p_q2_a1_d1 == 0)) { | |
d2182b69 | 473 | ath_dbg(common, CALIBRATE, |
226afe68 JP |
474 | "Divide by 0:\n" |
475 | "a0_d0=%d\n" | |
476 | "a0_d1=%d\n" | |
477 | "a2_d0=%d\n" | |
478 | "a1_d1=%d\n", | |
479 | i2_p_q2_a0_d0, i2_p_q2_a0_d1, | |
480 | i2_p_q2_a1_d0, i2_p_q2_a1_d1); | |
df23acaa LR |
481 | return false; |
482 | } | |
483 | ||
484 | mag_a0_d0 = (i2_m_q2_a0_d0 * res_scale) / i2_p_q2_a0_d0; | |
485 | phs_a0_d0 = (iq_corr_a0_d0 * res_scale) / i2_p_q2_a0_d0; | |
486 | ||
487 | mag_a0_d1 = (i2_m_q2_a0_d1 * res_scale) / i2_p_q2_a0_d1; | |
488 | phs_a0_d1 = (iq_corr_a0_d1 * res_scale) / i2_p_q2_a0_d1; | |
489 | ||
490 | mag_a1_d0 = (i2_m_q2_a1_d0 * res_scale) / i2_p_q2_a1_d0; | |
491 | phs_a1_d0 = (iq_corr_a1_d0 * res_scale) / i2_p_q2_a1_d0; | |
492 | ||
493 | mag_a1_d1 = (i2_m_q2_a1_d1 * res_scale) / i2_p_q2_a1_d1; | |
494 | phs_a1_d1 = (iq_corr_a1_d1 * res_scale) / i2_p_q2_a1_d1; | |
495 | ||
496 | /* w/o analog phase shift */ | |
497 | sin_2phi_1 = (((mag_a0_d0 - mag_a0_d1) * delpt_shift) / DELPT); | |
498 | /* w/o analog phase shift */ | |
499 | cos_2phi_1 = (((phs_a0_d1 - phs_a0_d0) * delpt_shift) / DELPT); | |
500 | /* w/ analog phase shift */ | |
501 | sin_2phi_2 = (((mag_a1_d0 - mag_a1_d1) * delpt_shift) / DELPT); | |
502 | /* w/ analog phase shift */ | |
503 | cos_2phi_2 = (((phs_a1_d1 - phs_a1_d0) * delpt_shift) / DELPT); | |
504 | ||
505 | /* | |
506 | * force sin^2 + cos^2 = 1; | |
507 | * find magnitude by approximation | |
508 | */ | |
509 | mag1 = ar9003_hw_find_mag_approx(ah, cos_2phi_1, sin_2phi_1); | |
510 | mag2 = ar9003_hw_find_mag_approx(ah, cos_2phi_2, sin_2phi_2); | |
511 | ||
512 | if ((mag1 == 0) || (mag2 == 0)) { | |
d2182b69 | 513 | ath_dbg(common, CALIBRATE, "Divide by 0: mag1=%d, mag2=%d\n", |
226afe68 | 514 | mag1, mag2); |
df23acaa LR |
515 | return false; |
516 | } | |
517 | ||
518 | /* normalization sin and cos by mag */ | |
519 | sin_2phi_1 = (sin_2phi_1 * res_scale / mag1); | |
520 | cos_2phi_1 = (cos_2phi_1 * res_scale / mag1); | |
521 | sin_2phi_2 = (sin_2phi_2 * res_scale / mag2); | |
522 | cos_2phi_2 = (cos_2phi_2 * res_scale / mag2); | |
523 | ||
524 | /* calculate IQ mismatch */ | |
525 | if (!ar9003_hw_solve_iq_cal(ah, | |
526 | sin_2phi_1, cos_2phi_1, | |
527 | sin_2phi_2, cos_2phi_2, | |
528 | mag_a0_d0, phs_a0_d0, | |
529 | mag_a1_d0, | |
530 | phs_a1_d0, solved_eq)) { | |
d2182b69 JP |
531 | ath_dbg(common, CALIBRATE, |
532 | "Call to ar9003_hw_solve_iq_cal() failed\n"); | |
df23acaa LR |
533 | return false; |
534 | } | |
535 | ||
536 | mag_tx = solved_eq[0]; | |
537 | phs_tx = solved_eq[1]; | |
538 | mag_rx = solved_eq[2]; | |
539 | phs_rx = solved_eq[3]; | |
540 | ||
d2182b69 | 541 | ath_dbg(common, CALIBRATE, |
226afe68 JP |
542 | "chain %d: mag mismatch=%d phase mismatch=%d\n", |
543 | chain_idx, mag_tx/res_scale, phs_tx/res_scale); | |
df23acaa LR |
544 | |
545 | if (res_scale == mag_tx) { | |
d2182b69 | 546 | ath_dbg(common, CALIBRATE, |
226afe68 JP |
547 | "Divide by 0: mag_tx=%d, res_scale=%d\n", |
548 | mag_tx, res_scale); | |
df23acaa LR |
549 | return false; |
550 | } | |
551 | ||
552 | /* calculate and quantize Tx IQ correction factor */ | |
553 | mag_corr_tx = (mag_tx * res_scale) / (res_scale - mag_tx); | |
554 | phs_corr_tx = -phs_tx; | |
555 | ||
556 | q_q_coff = (mag_corr_tx * 128 / res_scale); | |
557 | q_i_coff = (phs_corr_tx * 256 / res_scale); | |
558 | ||
d2182b69 | 559 | ath_dbg(common, CALIBRATE, "tx chain %d: mag corr=%d phase corr=%d\n", |
226afe68 | 560 | chain_idx, q_q_coff, q_i_coff); |
df23acaa LR |
561 | |
562 | if (q_i_coff < -63) | |
563 | q_i_coff = -63; | |
564 | if (q_i_coff > 63) | |
565 | q_i_coff = 63; | |
566 | if (q_q_coff < -63) | |
567 | q_q_coff = -63; | |
568 | if (q_q_coff > 63) | |
569 | q_q_coff = 63; | |
570 | ||
571 | iqc_coeff[0] = (q_q_coff * 128) + q_i_coff; | |
572 | ||
d2182b69 | 573 | ath_dbg(common, CALIBRATE, "tx chain %d: iq corr coeff=%x\n", |
226afe68 | 574 | chain_idx, iqc_coeff[0]); |
df23acaa LR |
575 | |
576 | if (-mag_rx == res_scale) { | |
d2182b69 | 577 | ath_dbg(common, CALIBRATE, |
226afe68 JP |
578 | "Divide by 0: mag_rx=%d, res_scale=%d\n", |
579 | mag_rx, res_scale); | |
df23acaa LR |
580 | return false; |
581 | } | |
582 | ||
583 | /* calculate and quantize Rx IQ correction factors */ | |
584 | mag_corr_rx = (-mag_rx * res_scale) / (res_scale + mag_rx); | |
585 | phs_corr_rx = -phs_rx; | |
586 | ||
587 | q_q_coff = (mag_corr_rx * 128 / res_scale); | |
588 | q_i_coff = (phs_corr_rx * 256 / res_scale); | |
589 | ||
d2182b69 | 590 | ath_dbg(common, CALIBRATE, "rx chain %d: mag corr=%d phase corr=%d\n", |
226afe68 | 591 | chain_idx, q_q_coff, q_i_coff); |
df23acaa LR |
592 | |
593 | if (q_i_coff < -63) | |
594 | q_i_coff = -63; | |
595 | if (q_i_coff > 63) | |
596 | q_i_coff = 63; | |
597 | if (q_q_coff < -63) | |
598 | q_q_coff = -63; | |
599 | if (q_q_coff > 63) | |
600 | q_q_coff = 63; | |
601 | ||
602 | iqc_coeff[1] = (q_q_coff * 128) + q_i_coff; | |
603 | ||
d2182b69 | 604 | ath_dbg(common, CALIBRATE, "rx chain %d: iq corr coeff=%x\n", |
226afe68 | 605 | chain_idx, iqc_coeff[1]); |
df23acaa LR |
606 | |
607 | return true; | |
608 | } | |
609 | ||
3782c69d RM |
610 | static void ar9003_hw_detect_outlier(int *mp_coeff, int nmeasurement, |
611 | int max_delta) | |
858b7e36 | 612 | { |
3782c69d RM |
613 | int mp_max = -64, max_idx = 0; |
614 | int mp_min = 63, min_idx = 0; | |
e948b99d | 615 | int mp_avg = 0, i, outlier_idx = 0, mp_count = 0; |
3782c69d RM |
616 | |
617 | /* find min/max mismatch across all calibrated gains */ | |
618 | for (i = 0; i < nmeasurement; i++) { | |
3782c69d RM |
619 | if (mp_coeff[i] > mp_max) { |
620 | mp_max = mp_coeff[i]; | |
621 | max_idx = i; | |
622 | } else if (mp_coeff[i] < mp_min) { | |
623 | mp_min = mp_coeff[i]; | |
624 | min_idx = i; | |
625 | } | |
626 | } | |
858b7e36 | 627 | |
3782c69d RM |
628 | /* find average (exclude max abs value) */ |
629 | for (i = 0; i < nmeasurement; i++) { | |
630 | if ((abs(mp_coeff[i]) < abs(mp_max)) || | |
e948b99d | 631 | (abs(mp_coeff[i]) < abs(mp_min))) { |
3782c69d | 632 | mp_avg += mp_coeff[i]; |
e948b99d RM |
633 | mp_count++; |
634 | } | |
3782c69d | 635 | } |
e948b99d RM |
636 | |
637 | /* | |
638 | * finding mean magnitude/phase if possible, otherwise | |
639 | * just use the last value as the mean | |
640 | */ | |
641 | if (mp_count) | |
642 | mp_avg /= mp_count; | |
643 | else | |
644 | mp_avg = mp_coeff[nmeasurement - 1]; | |
858b7e36 | 645 | |
3782c69d RM |
646 | /* detect outlier */ |
647 | if (abs(mp_max - mp_min) > max_delta) { | |
648 | if (abs(mp_max - mp_avg) > abs(mp_min - mp_avg)) | |
649 | outlier_idx = max_idx; | |
650 | else | |
651 | outlier_idx = min_idx; | |
e9c10469 RM |
652 | |
653 | mp_coeff[outlier_idx] = mp_avg; | |
3782c69d | 654 | } |
858b7e36 VT |
655 | } |
656 | ||
657 | static void ar9003_hw_tx_iqcal_load_avg_2_passes(struct ath_hw *ah, | |
34013524 RM |
658 | struct coeff *coeff, |
659 | bool is_reusable) | |
858b7e36 | 660 | { |
858b7e36 | 661 | int i, im, nmeasurement; |
858b7e36 | 662 | u32 tx_corr_coeff[MAX_MEASUREMENT][AR9300_MAX_CHAINS]; |
5f0c04ea | 663 | struct ath9k_hw_cal_data *caldata = ah->caldata; |
858b7e36 VT |
664 | |
665 | memset(tx_corr_coeff, 0, sizeof(tx_corr_coeff)); | |
666 | for (i = 0; i < MAX_MEASUREMENT / 2; i++) { | |
667 | tx_corr_coeff[i * 2][0] = tx_corr_coeff[(i * 2) + 1][0] = | |
668 | AR_PHY_TX_IQCAL_CORR_COEFF_B0(i); | |
669 | if (!AR_SREV_9485(ah)) { | |
670 | tx_corr_coeff[i * 2][1] = | |
671 | tx_corr_coeff[(i * 2) + 1][1] = | |
672 | AR_PHY_TX_IQCAL_CORR_COEFF_B1(i); | |
673 | ||
674 | tx_corr_coeff[i * 2][2] = | |
675 | tx_corr_coeff[(i * 2) + 1][2] = | |
676 | AR_PHY_TX_IQCAL_CORR_COEFF_B2(i); | |
677 | } | |
678 | } | |
679 | ||
680 | /* Load the average of 2 passes */ | |
4fb7175b RM |
681 | for (i = 0; i < AR9300_MAX_CHAINS; i++) { |
682 | if (!(ah->txchainmask & (1 << i))) | |
683 | continue; | |
3782c69d RM |
684 | nmeasurement = REG_READ_FIELD(ah, |
685 | AR_PHY_TX_IQCAL_STATUS_B0, | |
686 | AR_PHY_CALIBRATED_GAINS_0); | |
858b7e36 VT |
687 | |
688 | if (nmeasurement > MAX_MEASUREMENT) | |
689 | nmeasurement = MAX_MEASUREMENT; | |
690 | ||
3782c69d RM |
691 | /* detect outlier only if nmeasurement > 1 */ |
692 | if (nmeasurement > 1) { | |
693 | /* Detect magnitude outlier */ | |
694 | ar9003_hw_detect_outlier(coeff->mag_coeff[i], | |
695 | nmeasurement, MAX_MAG_DELTA); | |
858b7e36 | 696 | |
3782c69d RM |
697 | /* Detect phase outlier */ |
698 | ar9003_hw_detect_outlier(coeff->phs_coeff[i], | |
699 | nmeasurement, MAX_PHS_DELTA); | |
700 | } | |
858b7e36 | 701 | |
3782c69d RM |
702 | for (im = 0; im < nmeasurement; im++) { |
703 | ||
704 | coeff->iqc_coeff[0] = (coeff->mag_coeff[i][im] & 0x7f) | | |
705 | ((coeff->phs_coeff[i][im] & 0x7f) << 7); | |
858b7e36 VT |
706 | |
707 | if ((im % 2) == 0) | |
708 | REG_RMW_FIELD(ah, tx_corr_coeff[im][i], | |
709 | AR_PHY_TX_IQCAL_CORR_COEFF_00_COEFF_TABLE, | |
710 | coeff->iqc_coeff[0]); | |
711 | else | |
712 | REG_RMW_FIELD(ah, tx_corr_coeff[im][i], | |
713 | AR_PHY_TX_IQCAL_CORR_COEFF_01_COEFF_TABLE, | |
714 | coeff->iqc_coeff[0]); | |
5f0c04ea RM |
715 | |
716 | if (caldata) | |
717 | caldata->tx_corr_coeff[im][i] = | |
718 | coeff->iqc_coeff[0]; | |
858b7e36 | 719 | } |
5f0c04ea RM |
720 | if (caldata) |
721 | caldata->num_measures[i] = nmeasurement; | |
858b7e36 VT |
722 | } |
723 | ||
724 | REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_3, | |
725 | AR_PHY_TX_IQCAL_CONTROL_3_IQCORR_EN, 0x1); | |
726 | REG_RMW_FIELD(ah, AR_PHY_RX_IQCAL_CORR_B0, | |
727 | AR_PHY_RX_IQCAL_CORR_B0_LOOPBACK_IQCORR_EN, 0x1); | |
34013524 | 728 | |
5f0c04ea | 729 | if (caldata) |
34013524 | 730 | caldata->done_txiqcal_once = is_reusable; |
858b7e36 VT |
731 | |
732 | return; | |
858b7e36 VT |
733 | } |
734 | ||
3782c69d | 735 | static bool ar9003_hw_tx_iq_cal_run(struct ath_hw *ah) |
0b2084bc VT |
736 | { |
737 | struct ath_common *common = ath9k_hw_common(ah); | |
858b7e36 VT |
738 | u8 tx_gain_forced; |
739 | ||
858b7e36 VT |
740 | tx_gain_forced = REG_READ_FIELD(ah, AR_PHY_TX_FORCED_GAIN, |
741 | AR_PHY_TXGAIN_FORCE); | |
742 | if (tx_gain_forced) | |
743 | REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN, | |
744 | AR_PHY_TXGAIN_FORCE, 0); | |
745 | ||
3782c69d RM |
746 | REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_START, |
747 | AR_PHY_TX_IQCAL_START_DO_CAL, 1); | |
748 | ||
749 | if (!ath9k_hw_wait(ah, AR_PHY_TX_IQCAL_START, | |
750 | AR_PHY_TX_IQCAL_START_DO_CAL, 0, | |
751 | AH_WAIT_TIMEOUT)) { | |
d2182b69 | 752 | ath_dbg(common, CALIBRATE, "Tx IQ Cal is not completed\n"); |
3782c69d RM |
753 | return false; |
754 | } | |
755 | return true; | |
858b7e36 VT |
756 | } |
757 | ||
34013524 | 758 | static void ar9003_hw_tx_iq_cal_post_proc(struct ath_hw *ah, bool is_reusable) |
858b7e36 VT |
759 | { |
760 | struct ath_common *common = ath9k_hw_common(ah); | |
761 | const u32 txiqcal_status[AR9300_MAX_CHAINS] = { | |
3782c69d | 762 | AR_PHY_TX_IQCAL_STATUS_B0, |
858b7e36 VT |
763 | AR_PHY_TX_IQCAL_STATUS_B1, |
764 | AR_PHY_TX_IQCAL_STATUS_B2, | |
765 | }; | |
766 | const u_int32_t chan_info_tab[] = { | |
767 | AR_PHY_CHAN_INFO_TAB_0, | |
768 | AR_PHY_CHAN_INFO_TAB_1, | |
769 | AR_PHY_CHAN_INFO_TAB_2, | |
770 | }; | |
771 | struct coeff coeff; | |
772 | s32 iq_res[6]; | |
3782c69d | 773 | int i, im, j; |
858b7e36 VT |
774 | int nmeasurement; |
775 | ||
776 | for (i = 0; i < AR9300_MAX_CHAINS; i++) { | |
4fb7175b RM |
777 | if (!(ah->txchainmask & (1 << i))) |
778 | continue; | |
858b7e36 | 779 | |
3782c69d RM |
780 | nmeasurement = REG_READ_FIELD(ah, |
781 | AR_PHY_TX_IQCAL_STATUS_B0, | |
782 | AR_PHY_CALIBRATED_GAINS_0); | |
783 | if (nmeasurement > MAX_MEASUREMENT) | |
784 | nmeasurement = MAX_MEASUREMENT; | |
858b7e36 | 785 | |
3782c69d | 786 | for (im = 0; im < nmeasurement; im++) { |
d2182b69 JP |
787 | ath_dbg(common, CALIBRATE, |
788 | "Doing Tx IQ Cal for chain %d\n", i); | |
858b7e36 | 789 | |
3782c69d RM |
790 | if (REG_READ(ah, txiqcal_status[i]) & |
791 | AR_PHY_TX_IQCAL_STATUS_FAILED) { | |
d2182b69 JP |
792 | ath_dbg(common, CALIBRATE, |
793 | "Tx IQ Cal failed for chain %d\n", i); | |
3782c69d RM |
794 | goto tx_iqcal_fail; |
795 | } | |
858b7e36 | 796 | |
3782c69d RM |
797 | for (j = 0; j < 3; j++) { |
798 | u32 idx = 2 * j, offset = 4 * (3 * im + j); | |
858b7e36 | 799 | |
3782c69d | 800 | REG_RMW_FIELD(ah, |
858b7e36 VT |
801 | AR_PHY_CHAN_INFO_MEMORY, |
802 | AR_PHY_CHAN_INFO_TAB_S2_READ, | |
803 | 0); | |
804 | ||
3782c69d RM |
805 | /* 32 bits */ |
806 | iq_res[idx] = REG_READ(ah, | |
807 | chan_info_tab[i] + | |
808 | offset); | |
858b7e36 | 809 | |
3782c69d | 810 | REG_RMW_FIELD(ah, |
858b7e36 VT |
811 | AR_PHY_CHAN_INFO_MEMORY, |
812 | AR_PHY_CHAN_INFO_TAB_S2_READ, | |
813 | 1); | |
814 | ||
3782c69d RM |
815 | /* 16 bits */ |
816 | iq_res[idx + 1] = 0xffff & REG_READ(ah, | |
817 | chan_info_tab[i] + offset); | |
858b7e36 | 818 | |
d2182b69 JP |
819 | ath_dbg(common, CALIBRATE, |
820 | "IQ_RES[%d]=0x%x IQ_RES[%d]=0x%x\n", | |
3782c69d RM |
821 | idx, iq_res[idx], idx + 1, |
822 | iq_res[idx + 1]); | |
823 | } | |
858b7e36 | 824 | |
3782c69d RM |
825 | if (!ar9003_hw_calc_iq_corr(ah, i, iq_res, |
826 | coeff.iqc_coeff)) { | |
d2182b69 JP |
827 | ath_dbg(common, CALIBRATE, |
828 | "Failed in calculation of IQ correction\n"); | |
3782c69d RM |
829 | goto tx_iqcal_fail; |
830 | } | |
858b7e36 | 831 | |
3782c69d RM |
832 | coeff.mag_coeff[i][im] = coeff.iqc_coeff[0] & 0x7f; |
833 | coeff.phs_coeff[i][im] = | |
834 | (coeff.iqc_coeff[0] >> 7) & 0x7f; | |
858b7e36 | 835 | |
3782c69d RM |
836 | if (coeff.mag_coeff[i][im] > 63) |
837 | coeff.mag_coeff[i][im] -= 128; | |
838 | if (coeff.phs_coeff[i][im] > 63) | |
839 | coeff.phs_coeff[i][im] -= 128; | |
858b7e36 VT |
840 | } |
841 | } | |
4fb7175b | 842 | ar9003_hw_tx_iqcal_load_avg_2_passes(ah, &coeff, is_reusable); |
858b7e36 VT |
843 | |
844 | return; | |
845 | ||
846 | tx_iqcal_fail: | |
d2182b69 | 847 | ath_dbg(common, CALIBRATE, "Tx IQ Cal failed\n"); |
858b7e36 VT |
848 | return; |
849 | } | |
5f0c04ea RM |
850 | |
851 | static void ar9003_hw_tx_iq_cal_reload(struct ath_hw *ah) | |
852 | { | |
853 | struct ath9k_hw_cal_data *caldata = ah->caldata; | |
854 | u32 tx_corr_coeff[MAX_MEASUREMENT][AR9300_MAX_CHAINS]; | |
855 | int i, im; | |
856 | ||
857 | memset(tx_corr_coeff, 0, sizeof(tx_corr_coeff)); | |
858 | for (i = 0; i < MAX_MEASUREMENT / 2; i++) { | |
859 | tx_corr_coeff[i * 2][0] = tx_corr_coeff[(i * 2) + 1][0] = | |
860 | AR_PHY_TX_IQCAL_CORR_COEFF_B0(i); | |
861 | if (!AR_SREV_9485(ah)) { | |
862 | tx_corr_coeff[i * 2][1] = | |
863 | tx_corr_coeff[(i * 2) + 1][1] = | |
864 | AR_PHY_TX_IQCAL_CORR_COEFF_B1(i); | |
865 | ||
866 | tx_corr_coeff[i * 2][2] = | |
867 | tx_corr_coeff[(i * 2) + 1][2] = | |
868 | AR_PHY_TX_IQCAL_CORR_COEFF_B2(i); | |
869 | } | |
870 | } | |
871 | ||
872 | for (i = 0; i < AR9300_MAX_CHAINS; i++) { | |
873 | if (!(ah->txchainmask & (1 << i))) | |
874 | continue; | |
875 | ||
876 | for (im = 0; im < caldata->num_measures[i]; im++) { | |
877 | if ((im % 2) == 0) | |
878 | REG_RMW_FIELD(ah, tx_corr_coeff[im][i], | |
879 | AR_PHY_TX_IQCAL_CORR_COEFF_00_COEFF_TABLE, | |
880 | caldata->tx_corr_coeff[im][i]); | |
881 | else | |
882 | REG_RMW_FIELD(ah, tx_corr_coeff[im][i], | |
883 | AR_PHY_TX_IQCAL_CORR_COEFF_01_COEFF_TABLE, | |
884 | caldata->tx_corr_coeff[im][i]); | |
885 | } | |
886 | } | |
887 | ||
888 | REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_3, | |
889 | AR_PHY_TX_IQCAL_CONTROL_3_IQCORR_EN, 0x1); | |
890 | REG_RMW_FIELD(ah, AR_PHY_RX_IQCAL_CORR_B0, | |
891 | AR_PHY_RX_IQCAL_CORR_B0_LOOPBACK_IQCORR_EN, 0x1); | |
892 | } | |
893 | ||
df23acaa LR |
894 | static bool ar9003_hw_init_cal(struct ath_hw *ah, |
895 | struct ath9k_channel *chan) | |
896 | { | |
897 | struct ath_common *common = ath9k_hw_common(ah); | |
5f0c04ea | 898 | struct ath9k_hw_cal_data *caldata = ah->caldata; |
77a5a664 | 899 | bool txiqcal_done = false, txclcal_done = false; |
324c74ad RM |
900 | bool is_reusable = true, status = true; |
901 | bool run_rtt_cal = false, run_agc_cal; | |
902 | bool rtt = !!(ah->caps.hw_caps & ATH9K_HW_CAP_RTT); | |
903 | u32 agc_ctrl = 0, agc_supp_cals = AR_PHY_AGC_CONTROL_OFFSET_CAL | | |
904 | AR_PHY_AGC_CONTROL_FLTR_CAL | | |
905 | AR_PHY_AGC_CONTROL_PKDET_CAL; | |
8ad74c4d | 906 | int i, j; |
77a5a664 RM |
907 | u32 cl_idx[AR9300_MAX_CHAINS] = { AR_PHY_CL_TAB_0, |
908 | AR_PHY_CL_TAB_1, | |
909 | AR_PHY_CL_TAB_2 }; | |
910 | ||
324c74ad RM |
911 | if (rtt) { |
912 | if (!ar9003_hw_rtt_restore(ah, chan)) | |
913 | run_rtt_cal = true; | |
914 | ||
8a90555f SM |
915 | if (run_rtt_cal) |
916 | ath_dbg(common, CALIBRATE, "RTT calibration to be done\n"); | |
324c74ad | 917 | } |
8a90555f | 918 | |
324c74ad RM |
919 | run_agc_cal = run_rtt_cal; |
920 | ||
921 | if (run_rtt_cal) { | |
922 | ar9003_hw_rtt_enable(ah); | |
923 | ar9003_hw_rtt_set_mask(ah, 0x00); | |
924 | ar9003_hw_rtt_clear_hist(ah); | |
925 | } | |
926 | ||
927 | if (rtt && !run_rtt_cal) { | |
928 | agc_ctrl = REG_READ(ah, AR_PHY_AGC_CONTROL); | |
929 | agc_supp_cals &= agc_ctrl; | |
930 | agc_ctrl &= ~(AR_PHY_AGC_CONTROL_OFFSET_CAL | | |
931 | AR_PHY_AGC_CONTROL_FLTR_CAL | | |
932 | AR_PHY_AGC_CONTROL_PKDET_CAL); | |
933 | REG_WRITE(ah, AR_PHY_AGC_CONTROL, agc_ctrl); | |
934 | } | |
935 | ||
8ad74c4d | 936 | if (ah->enabled_cals & TX_CL_CAL) { |
77a5a664 RM |
937 | if (caldata && caldata->done_txclcal_once) |
938 | REG_CLR_BIT(ah, AR_PHY_CL_CAL_CTL, | |
939 | AR_PHY_CL_CAL_ENABLE); | |
324c74ad | 940 | else { |
77a5a664 RM |
941 | REG_SET_BIT(ah, AR_PHY_CL_CAL_CTL, |
942 | AR_PHY_CL_CAL_ENABLE); | |
324c74ad RM |
943 | run_agc_cal = true; |
944 | } | |
77a5a664 | 945 | } |
df23acaa | 946 | |
8ad74c4d RM |
947 | if (!(ah->enabled_cals & TX_IQ_CAL)) |
948 | goto skip_tx_iqcal; | |
949 | ||
c5395b67 | 950 | /* Do Tx IQ Calibration */ |
3782c69d RM |
951 | REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_1, |
952 | AR_PHY_TX_IQCAL_CONTROL_1_IQCORR_I_Q_COFF_DELPT, | |
953 | DELPT); | |
858b7e36 | 954 | |
3782c69d RM |
955 | /* |
956 | * For AR9485 or later chips, TxIQ cal runs as part of | |
957 | * AGC calibration | |
958 | */ | |
8ad74c4d | 959 | if (ah->enabled_cals & TX_IQ_ON_AGC_CAL) { |
5f0c04ea RM |
960 | if (caldata && !caldata->done_txiqcal_once) |
961 | REG_SET_BIT(ah, AR_PHY_TX_IQCAL_CONTROL_0, | |
962 | AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL); | |
963 | else | |
964 | REG_CLR_BIT(ah, AR_PHY_TX_IQCAL_CONTROL_0, | |
965 | AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL); | |
324c74ad | 966 | txiqcal_done = run_agc_cal = true; |
8ad74c4d | 967 | goto skip_tx_iqcal; |
324c74ad RM |
968 | } else if (caldata && !caldata->done_txiqcal_once) |
969 | run_agc_cal = true; | |
970 | ||
5955b2b0 | 971 | if (ath9k_hw_mci_is_enabled(ah) && IS_CHAN_2GHZ(chan) && run_agc_cal) |
f2f408ef | 972 | ar9003_mci_init_cal_req(ah, &is_reusable); |
3ebfcdc4 | 973 | |
e5d821a4 FF |
974 | if (!(IS_CHAN_HALF_RATE(chan) || IS_CHAN_QUARTER_RATE(chan))) { |
975 | txiqcal_done = ar9003_hw_tx_iq_cal_run(ah); | |
976 | REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_DIS); | |
977 | udelay(5); | |
978 | REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN); | |
979 | } | |
c5395b67 | 980 | |
8ad74c4d | 981 | skip_tx_iqcal: |
a126ff51 | 982 | if (run_agc_cal || !(ah->ah_flags & AH_FASTCC)) { |
324c74ad RM |
983 | /* Calibrate the AGC */ |
984 | REG_WRITE(ah, AR_PHY_AGC_CONTROL, | |
985 | REG_READ(ah, AR_PHY_AGC_CONTROL) | | |
986 | AR_PHY_AGC_CONTROL_CAL); | |
987 | ||
988 | /* Poll for offset calibration complete */ | |
989 | status = ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL, | |
990 | AR_PHY_AGC_CONTROL_CAL, | |
991 | 0, AH_WAIT_TIMEOUT); | |
992 | } | |
3ebfcdc4 | 993 | |
5955b2b0 | 994 | if (ath9k_hw_mci_is_enabled(ah) && IS_CHAN_2GHZ(chan) && run_agc_cal) |
f2f408ef | 995 | ar9003_mci_init_cal_done(ah); |
3ebfcdc4 | 996 | |
324c74ad RM |
997 | if (rtt && !run_rtt_cal) { |
998 | agc_ctrl |= agc_supp_cals; | |
999 | REG_WRITE(ah, AR_PHY_AGC_CONTROL, agc_ctrl); | |
1000 | } | |
1001 | ||
1002 | if (!status) { | |
1003 | if (run_rtt_cal) | |
1004 | ar9003_hw_rtt_disable(ah); | |
1005 | ||
d2182b69 JP |
1006 | ath_dbg(common, CALIBRATE, |
1007 | "offset calibration failed to complete in 1ms; noisy environment?\n"); | |
df23acaa LR |
1008 | return false; |
1009 | } | |
1010 | ||
3782c69d | 1011 | if (txiqcal_done) |
34013524 | 1012 | ar9003_hw_tx_iq_cal_post_proc(ah, is_reusable); |
5f0c04ea RM |
1013 | else if (caldata && caldata->done_txiqcal_once) |
1014 | ar9003_hw_tx_iq_cal_reload(ah); | |
858b7e36 | 1015 | |
77a5a664 | 1016 | #define CL_TAB_ENTRY(reg_base) (reg_base + (4 * j)) |
8ad74c4d | 1017 | if (caldata && (ah->enabled_cals & TX_CL_CAL)) { |
77a5a664 RM |
1018 | txclcal_done = !!(REG_READ(ah, AR_PHY_AGC_CONTROL) & |
1019 | AR_PHY_AGC_CONTROL_CLC_SUCCESS); | |
1020 | if (caldata->done_txclcal_once) { | |
1021 | for (i = 0; i < AR9300_MAX_CHAINS; i++) { | |
1022 | if (!(ah->txchainmask & (1 << i))) | |
1023 | continue; | |
1024 | for (j = 0; j < MAX_CL_TAB_ENTRY; j++) | |
1025 | REG_WRITE(ah, CL_TAB_ENTRY(cl_idx[i]), | |
1026 | caldata->tx_clcal[i][j]); | |
1027 | } | |
1028 | } else if (is_reusable && txclcal_done) { | |
1029 | for (i = 0; i < AR9300_MAX_CHAINS; i++) { | |
1030 | if (!(ah->txchainmask & (1 << i))) | |
1031 | continue; | |
1032 | for (j = 0; j < MAX_CL_TAB_ENTRY; j++) | |
1033 | caldata->tx_clcal[i][j] = | |
1034 | REG_READ(ah, | |
1035 | CL_TAB_ENTRY(cl_idx[i])); | |
1036 | } | |
1037 | caldata->done_txclcal_once = true; | |
1038 | } | |
1039 | } | |
1040 | #undef CL_TAB_ENTRY | |
1041 | ||
324c74ad | 1042 | if (run_rtt_cal && caldata) { |
8a90555f SM |
1043 | if (is_reusable) { |
1044 | if (!ath9k_hw_rfbus_req(ah)) | |
1045 | ath_err(ath9k_hw_common(ah), | |
1046 | "Could not stop baseband\n"); | |
1047 | else | |
1048 | ar9003_hw_rtt_fill_hist(ah); | |
324c74ad | 1049 | |
8a90555f | 1050 | ath9k_hw_rfbus_done(ah); |
324c74ad RM |
1051 | } |
1052 | ||
1053 | ar9003_hw_rtt_disable(ah); | |
1054 | } | |
1055 | ||
df23acaa LR |
1056 | /* Initialize list pointers */ |
1057 | ah->cal_list = ah->cal_list_last = ah->cal_list_curr = NULL; | |
6497827f | 1058 | ah->supp_cals = IQ_MISMATCH_CAL; |
df23acaa | 1059 | |
6497827f | 1060 | if (ah->supp_cals & IQ_MISMATCH_CAL) { |
df23acaa LR |
1061 | INIT_CAL(&ah->iq_caldata); |
1062 | INSERT_CAL(ah, &ah->iq_caldata); | |
d2182b69 | 1063 | ath_dbg(common, CALIBRATE, "enabling IQ Calibration\n"); |
df23acaa LR |
1064 | } |
1065 | ||
6497827f | 1066 | if (ah->supp_cals & TEMP_COMP_CAL) { |
df23acaa LR |
1067 | INIT_CAL(&ah->tempCompCalData); |
1068 | INSERT_CAL(ah, &ah->tempCompCalData); | |
d2182b69 JP |
1069 | ath_dbg(common, CALIBRATE, |
1070 | "enabling Temperature Compensation Calibration\n"); | |
df23acaa LR |
1071 | } |
1072 | ||
1073 | /* Initialize current pointer to first element in list */ | |
1074 | ah->cal_list_curr = ah->cal_list; | |
1075 | ||
1076 | if (ah->cal_list_curr) | |
1077 | ath9k_hw_reset_calibration(ah, ah->cal_list_curr); | |
1078 | ||
5f0c04ea RM |
1079 | if (caldata) |
1080 | caldata->CalValid = 0; | |
df23acaa LR |
1081 | |
1082 | return true; | |
77d6d39a LR |
1083 | } |
1084 | ||
795f5e2c LR |
1085 | void ar9003_hw_attach_calib_ops(struct ath_hw *ah) |
1086 | { | |
1087 | struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah); | |
1088 | struct ath_hw_ops *ops = ath9k_hw_ops(ah); | |
1089 | ||
1090 | priv_ops->init_cal_settings = ar9003_hw_init_cal_settings; | |
1091 | priv_ops->init_cal = ar9003_hw_init_cal; | |
1092 | priv_ops->setup_calibration = ar9003_hw_setup_calibration; | |
795f5e2c LR |
1093 | |
1094 | ops->calibrate = ar9003_hw_calibrate; | |
1095 | } |