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795f5e2c LR |
1 | /* |
2 | * Copyright (c) 2010 Atheros Communications Inc. | |
3 | * | |
4 | * Permission to use, copy, modify, and/or distribute this software for any | |
5 | * purpose with or without fee is hereby granted, provided that the above | |
6 | * copyright notice and this permission notice appear in all copies. | |
7 | * | |
8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
15 | */ | |
16 | ||
17 | #include "hw.h" | |
18 | #include "hw-ops.h" | |
19 | #include "ar9003_phy.h" | |
20 | ||
858b7e36 VT |
21 | #define MPASS 3 |
22 | #define MAX_MEASUREMENT 8 | |
23 | #define MAX_DIFFERENCE 10 | |
24 | ||
25 | struct coeff { | |
26 | int mag_coeff[AR9300_MAX_CHAINS][MAX_MEASUREMENT][MPASS]; | |
27 | int phs_coeff[AR9300_MAX_CHAINS][MAX_MEASUREMENT][MPASS]; | |
28 | int iqc_coeff[2]; | |
29 | }; | |
30 | ||
6497827f FF |
31 | enum ar9003_cal_types { |
32 | IQ_MISMATCH_CAL = BIT(0), | |
33 | TEMP_COMP_CAL = BIT(1), | |
34 | }; | |
35 | ||
795f5e2c LR |
36 | static void ar9003_hw_setup_calibration(struct ath_hw *ah, |
37 | struct ath9k_cal_list *currCal) | |
38 | { | |
4b01931e LR |
39 | struct ath_common *common = ath9k_hw_common(ah); |
40 | ||
41 | /* Select calibration to run */ | |
42 | switch (currCal->calData->calType) { | |
43 | case IQ_MISMATCH_CAL: | |
44 | /* | |
45 | * Start calibration with | |
46 | * 2^(INIT_IQCAL_LOG_COUNT_MAX+1) samples | |
47 | */ | |
48 | REG_RMW_FIELD(ah, AR_PHY_TIMING4, | |
49 | AR_PHY_TIMING4_IQCAL_LOG_COUNT_MAX, | |
50 | currCal->calData->calCountMax); | |
51 | REG_WRITE(ah, AR_PHY_CALMODE, AR_PHY_CALMODE_IQ); | |
52 | ||
226afe68 JP |
53 | ath_dbg(common, ATH_DBG_CALIBRATE, |
54 | "starting IQ Mismatch Calibration\n"); | |
4b01931e LR |
55 | |
56 | /* Kick-off cal */ | |
57 | REG_SET_BIT(ah, AR_PHY_TIMING4, AR_PHY_TIMING4_DO_CAL); | |
58 | break; | |
59 | case TEMP_COMP_CAL: | |
60 | REG_RMW_FIELD(ah, AR_PHY_65NM_CH0_THERM, | |
61 | AR_PHY_65NM_CH0_THERM_LOCAL, 1); | |
62 | REG_RMW_FIELD(ah, AR_PHY_65NM_CH0_THERM, | |
63 | AR_PHY_65NM_CH0_THERM_START, 1); | |
64 | ||
226afe68 JP |
65 | ath_dbg(common, ATH_DBG_CALIBRATE, |
66 | "starting Temperature Compensation Calibration\n"); | |
4b01931e | 67 | break; |
4b01931e | 68 | } |
795f5e2c LR |
69 | } |
70 | ||
df23acaa LR |
71 | /* |
72 | * Generic calibration routine. | |
73 | * Recalibrate the lower PHY chips to account for temperature/environment | |
74 | * changes. | |
75 | */ | |
76 | static bool ar9003_hw_per_calibration(struct ath_hw *ah, | |
77 | struct ath9k_channel *ichan, | |
78 | u8 rxchainmask, | |
79 | struct ath9k_cal_list *currCal) | |
80 | { | |
20bd2a09 | 81 | struct ath9k_hw_cal_data *caldata = ah->caldata; |
df23acaa LR |
82 | /* Cal is assumed not done until explicitly set below */ |
83 | bool iscaldone = false; | |
84 | ||
85 | /* Calibration in progress. */ | |
86 | if (currCal->calState == CAL_RUNNING) { | |
87 | /* Check to see if it has finished. */ | |
88 | if (!(REG_READ(ah, AR_PHY_TIMING4) & AR_PHY_TIMING4_DO_CAL)) { | |
89 | /* | |
90 | * Accumulate cal measures for active chains | |
91 | */ | |
92 | currCal->calData->calCollect(ah); | |
93 | ah->cal_samples++; | |
94 | ||
95 | if (ah->cal_samples >= | |
96 | currCal->calData->calNumSamples) { | |
97 | unsigned int i, numChains = 0; | |
98 | for (i = 0; i < AR9300_MAX_CHAINS; i++) { | |
99 | if (rxchainmask & (1 << i)) | |
100 | numChains++; | |
101 | } | |
102 | ||
103 | /* | |
104 | * Process accumulated data | |
105 | */ | |
106 | currCal->calData->calPostProc(ah, numChains); | |
107 | ||
108 | /* Calibration has finished. */ | |
20bd2a09 | 109 | caldata->CalValid |= currCal->calData->calType; |
df23acaa LR |
110 | currCal->calState = CAL_DONE; |
111 | iscaldone = true; | |
112 | } else { | |
113 | /* | |
114 | * Set-up collection of another sub-sample until we | |
115 | * get desired number | |
116 | */ | |
117 | ar9003_hw_setup_calibration(ah, currCal); | |
118 | } | |
119 | } | |
20bd2a09 | 120 | } else if (!(caldata->CalValid & currCal->calData->calType)) { |
df23acaa LR |
121 | /* If current cal is marked invalid in channel, kick it off */ |
122 | ath9k_hw_reset_calibration(ah, currCal); | |
123 | } | |
124 | ||
125 | return iscaldone; | |
126 | } | |
127 | ||
795f5e2c LR |
128 | static bool ar9003_hw_calibrate(struct ath_hw *ah, |
129 | struct ath9k_channel *chan, | |
130 | u8 rxchainmask, | |
131 | bool longcal) | |
132 | { | |
df23acaa LR |
133 | bool iscaldone = true; |
134 | struct ath9k_cal_list *currCal = ah->cal_list_curr; | |
135 | ||
136 | /* | |
137 | * For given calibration: | |
138 | * 1. Call generic cal routine | |
139 | * 2. When this cal is done (isCalDone) if we have more cals waiting | |
140 | * (eg after reset), mask this to upper layers by not propagating | |
141 | * isCalDone if it is set to TRUE. | |
142 | * Instead, change isCalDone to FALSE and setup the waiting cal(s) | |
143 | * to be run. | |
144 | */ | |
145 | if (currCal && | |
146 | (currCal->calState == CAL_RUNNING || | |
147 | currCal->calState == CAL_WAITING)) { | |
148 | iscaldone = ar9003_hw_per_calibration(ah, chan, | |
149 | rxchainmask, currCal); | |
150 | if (iscaldone) { | |
151 | ah->cal_list_curr = currCal = currCal->calNext; | |
152 | ||
153 | if (currCal->calState == CAL_WAITING) { | |
154 | iscaldone = false; | |
155 | ath9k_hw_reset_calibration(ah, currCal); | |
156 | } | |
157 | } | |
158 | } | |
795f5e2c | 159 | |
df23acaa LR |
160 | /* Do NF cal only at longer intervals */ |
161 | if (longcal) { | |
93697460 FF |
162 | /* |
163 | * Get the value from the previous NF cal and update | |
164 | * history buffer. | |
165 | */ | |
166 | ath9k_hw_getnf(ah, chan); | |
167 | ||
df23acaa LR |
168 | /* |
169 | * Load the NF from history buffer of the current channel. | |
170 | * NF is slow time-variant, so it is OK to use a historical | |
171 | * value. | |
172 | */ | |
173 | ath9k_hw_loadnf(ah, ah->curchan); | |
174 | ||
175 | /* start NF calibration, without updating BB NF register */ | |
00c86590 | 176 | ath9k_hw_start_nfcal(ah, false); |
df23acaa LR |
177 | } |
178 | ||
179 | return iscaldone; | |
795f5e2c LR |
180 | } |
181 | ||
590b7d2f LR |
182 | static void ar9003_hw_iqcal_collect(struct ath_hw *ah) |
183 | { | |
184 | int i; | |
185 | ||
186 | /* Accumulate IQ cal measures for active chains */ | |
187 | for (i = 0; i < AR5416_MAX_CHAINS; 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)); | |
226afe68 JP |
194 | ath_dbg(ath9k_hw_common(ah), ATH_DBG_CALIBRATE, |
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]); | |
590b7d2f LR |
199 | } |
200 | } | |
201 | ||
202 | static void ar9003_hw_iqcalibrate(struct ath_hw *ah, u8 numChains) | |
203 | { | |
204 | struct ath_common *common = ath9k_hw_common(ah); | |
205 | u32 powerMeasQ, powerMeasI, iqCorrMeas; | |
206 | u32 qCoffDenom, iCoffDenom; | |
207 | int32_t qCoff, iCoff; | |
208 | int iqCorrNeg, i; | |
07b2fa5a | 209 | static const u_int32_t offset_array[3] = { |
590b7d2f LR |
210 | AR_PHY_RX_IQCAL_CORR_B0, |
211 | AR_PHY_RX_IQCAL_CORR_B1, | |
212 | AR_PHY_RX_IQCAL_CORR_B2, | |
213 | }; | |
214 | ||
215 | for (i = 0; i < numChains; i++) { | |
216 | powerMeasI = ah->totalPowerMeasI[i]; | |
217 | powerMeasQ = ah->totalPowerMeasQ[i]; | |
218 | iqCorrMeas = ah->totalIqCorrMeas[i]; | |
219 | ||
226afe68 JP |
220 | ath_dbg(common, ATH_DBG_CALIBRATE, |
221 | "Starting IQ Cal and Correction for Chain %d\n", | |
222 | i); | |
590b7d2f | 223 | |
226afe68 JP |
224 | ath_dbg(common, ATH_DBG_CALIBRATE, |
225 | "Orignal: Chn %diq_corr_meas = 0x%08x\n", | |
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 | ||
226afe68 JP |
235 | ath_dbg(common, ATH_DBG_CALIBRATE, |
236 | "Chn %d pwr_meas_i = 0x%08x\n", i, powerMeasI); | |
237 | ath_dbg(common, ATH_DBG_CALIBRATE, | |
238 | "Chn %d pwr_meas_q = 0x%08x\n", i, powerMeasQ); | |
239 | ath_dbg(common, ATH_DBG_CALIBRATE, "iqCorrNeg is 0x%08x\n", | |
240 | iqCorrNeg); | |
590b7d2f LR |
241 | |
242 | iCoffDenom = (powerMeasI / 2 + powerMeasQ / 2) / 256; | |
243 | qCoffDenom = powerMeasQ / 64; | |
244 | ||
245 | if ((iCoffDenom != 0) && (qCoffDenom != 0)) { | |
246 | iCoff = iqCorrMeas / iCoffDenom; | |
247 | qCoff = powerMeasI / qCoffDenom - 64; | |
226afe68 JP |
248 | ath_dbg(common, ATH_DBG_CALIBRATE, |
249 | "Chn %d iCoff = 0x%08x\n", i, iCoff); | |
250 | ath_dbg(common, ATH_DBG_CALIBRATE, | |
251 | "Chn %d qCoff = 0x%08x\n", i, qCoff); | |
590b7d2f LR |
252 | |
253 | /* Force bounds on iCoff */ | |
254 | if (iCoff >= 63) | |
255 | iCoff = 63; | |
256 | else if (iCoff <= -63) | |
257 | iCoff = -63; | |
258 | ||
259 | /* Negate iCoff if iqCorrNeg == 0 */ | |
260 | if (iqCorrNeg == 0x0) | |
261 | iCoff = -iCoff; | |
262 | ||
263 | /* Force bounds on qCoff */ | |
264 | if (qCoff >= 63) | |
265 | qCoff = 63; | |
266 | else if (qCoff <= -63) | |
267 | qCoff = -63; | |
268 | ||
269 | iCoff = iCoff & 0x7f; | |
270 | qCoff = qCoff & 0x7f; | |
271 | ||
226afe68 JP |
272 | ath_dbg(common, ATH_DBG_CALIBRATE, |
273 | "Chn %d : iCoff = 0x%x qCoff = 0x%x\n", | |
274 | i, iCoff, qCoff); | |
275 | ath_dbg(common, ATH_DBG_CALIBRATE, | |
276 | "Register offset (0x%04x) before update = 0x%x\n", | |
277 | offset_array[i], | |
278 | REG_READ(ah, offset_array[i])); | |
590b7d2f LR |
279 | |
280 | REG_RMW_FIELD(ah, offset_array[i], | |
281 | AR_PHY_RX_IQCAL_CORR_IQCORR_Q_I_COFF, | |
282 | iCoff); | |
283 | REG_RMW_FIELD(ah, offset_array[i], | |
284 | AR_PHY_RX_IQCAL_CORR_IQCORR_Q_Q_COFF, | |
285 | qCoff); | |
226afe68 JP |
286 | ath_dbg(common, ATH_DBG_CALIBRATE, |
287 | "Register offset (0x%04x) QI COFF (bitfields 0x%08x) after update = 0x%x\n", | |
288 | offset_array[i], | |
289 | AR_PHY_RX_IQCAL_CORR_IQCORR_Q_I_COFF, | |
290 | REG_READ(ah, offset_array[i])); | |
291 | ath_dbg(common, ATH_DBG_CALIBRATE, | |
292 | "Register offset (0x%04x) QQ COFF (bitfields 0x%08x) after update = 0x%x\n", | |
293 | offset_array[i], | |
294 | AR_PHY_RX_IQCAL_CORR_IQCORR_Q_Q_COFF, | |
295 | REG_READ(ah, offset_array[i])); | |
296 | ||
297 | ath_dbg(common, ATH_DBG_CALIBRATE, | |
298 | "IQ Cal and Correction done for Chain %d\n", i); | |
590b7d2f LR |
299 | } |
300 | } | |
301 | ||
302 | REG_SET_BIT(ah, AR_PHY_RX_IQCAL_CORR_B0, | |
303 | AR_PHY_RX_IQCAL_CORR_IQCORR_ENABLE); | |
226afe68 JP |
304 | ath_dbg(common, ATH_DBG_CALIBRATE, |
305 | "IQ Cal and Correction (offset 0x%04x) enabled (bit position 0x%08x). New Value 0x%08x\n", | |
306 | (unsigned) (AR_PHY_RX_IQCAL_CORR_B0), | |
307 | AR_PHY_RX_IQCAL_CORR_IQCORR_ENABLE, | |
308 | REG_READ(ah, AR_PHY_RX_IQCAL_CORR_B0)); | |
590b7d2f LR |
309 | } |
310 | ||
311 | static const struct ath9k_percal_data iq_cal_single_sample = { | |
312 | IQ_MISMATCH_CAL, | |
313 | MIN_CAL_SAMPLES, | |
314 | PER_MAX_LOG_COUNT, | |
315 | ar9003_hw_iqcal_collect, | |
316 | ar9003_hw_iqcalibrate | |
317 | }; | |
318 | ||
795f5e2c LR |
319 | static void ar9003_hw_init_cal_settings(struct ath_hw *ah) |
320 | { | |
590b7d2f | 321 | ah->iq_caldata.calData = &iq_cal_single_sample; |
795f5e2c LR |
322 | } |
323 | ||
df23acaa LR |
324 | /* |
325 | * solve 4x4 linear equation used in loopback iq cal. | |
326 | */ | |
327 | static bool ar9003_hw_solve_iq_cal(struct ath_hw *ah, | |
328 | s32 sin_2phi_1, | |
329 | s32 cos_2phi_1, | |
330 | s32 sin_2phi_2, | |
331 | s32 cos_2phi_2, | |
332 | s32 mag_a0_d0, | |
333 | s32 phs_a0_d0, | |
334 | s32 mag_a1_d0, | |
335 | s32 phs_a1_d0, | |
336 | s32 solved_eq[]) | |
337 | { | |
338 | s32 f1 = cos_2phi_1 - cos_2phi_2, | |
339 | f3 = sin_2phi_1 - sin_2phi_2, | |
340 | f2; | |
341 | s32 mag_tx, phs_tx, mag_rx, phs_rx; | |
342 | const s32 result_shift = 1 << 15; | |
343 | struct ath_common *common = ath9k_hw_common(ah); | |
344 | ||
345 | f2 = (f1 * f1 + f3 * f3) / result_shift; | |
346 | ||
347 | if (!f2) { | |
226afe68 | 348 | ath_dbg(common, ATH_DBG_CALIBRATE, "Divide by 0\n"); |
df23acaa LR |
349 | return false; |
350 | } | |
351 | ||
352 | /* mag mismatch, tx */ | |
353 | mag_tx = f1 * (mag_a0_d0 - mag_a1_d0) + f3 * (phs_a0_d0 - phs_a1_d0); | |
354 | /* phs mismatch, tx */ | |
355 | phs_tx = f3 * (-mag_a0_d0 + mag_a1_d0) + f1 * (phs_a0_d0 - phs_a1_d0); | |
356 | ||
357 | mag_tx = (mag_tx / f2); | |
358 | phs_tx = (phs_tx / f2); | |
359 | ||
360 | /* mag mismatch, rx */ | |
361 | mag_rx = mag_a0_d0 - (cos_2phi_1 * mag_tx + sin_2phi_1 * phs_tx) / | |
362 | result_shift; | |
363 | /* phs mismatch, rx */ | |
364 | phs_rx = phs_a0_d0 + (sin_2phi_1 * mag_tx - cos_2phi_1 * phs_tx) / | |
365 | result_shift; | |
366 | ||
367 | solved_eq[0] = mag_tx; | |
368 | solved_eq[1] = phs_tx; | |
369 | solved_eq[2] = mag_rx; | |
370 | solved_eq[3] = phs_rx; | |
371 | ||
372 | return true; | |
373 | } | |
374 | ||
375 | static s32 ar9003_hw_find_mag_approx(struct ath_hw *ah, s32 in_re, s32 in_im) | |
77d6d39a | 376 | { |
df23acaa LR |
377 | s32 abs_i = abs(in_re), |
378 | abs_q = abs(in_im), | |
379 | max_abs, min_abs; | |
380 | ||
381 | if (abs_i > abs_q) { | |
382 | max_abs = abs_i; | |
383 | min_abs = abs_q; | |
384 | } else { | |
385 | max_abs = abs_q; | |
386 | min_abs = abs_i; | |
387 | } | |
388 | ||
389 | return max_abs - (max_abs / 32) + (min_abs / 8) + (min_abs / 4); | |
390 | } | |
391 | ||
392 | #define DELPT 32 | |
393 | ||
394 | static bool ar9003_hw_calc_iq_corr(struct ath_hw *ah, | |
395 | s32 chain_idx, | |
396 | const s32 iq_res[], | |
397 | s32 iqc_coeff[]) | |
398 | { | |
399 | s32 i2_m_q2_a0_d0, i2_p_q2_a0_d0, iq_corr_a0_d0, | |
400 | i2_m_q2_a0_d1, i2_p_q2_a0_d1, iq_corr_a0_d1, | |
401 | i2_m_q2_a1_d0, i2_p_q2_a1_d0, iq_corr_a1_d0, | |
402 | i2_m_q2_a1_d1, i2_p_q2_a1_d1, iq_corr_a1_d1; | |
403 | s32 mag_a0_d0, mag_a1_d0, mag_a0_d1, mag_a1_d1, | |
404 | phs_a0_d0, phs_a1_d0, phs_a0_d1, phs_a1_d1, | |
405 | sin_2phi_1, cos_2phi_1, | |
406 | sin_2phi_2, cos_2phi_2; | |
407 | s32 mag_tx, phs_tx, mag_rx, phs_rx; | |
408 | s32 solved_eq[4], mag_corr_tx, phs_corr_tx, mag_corr_rx, phs_corr_rx, | |
409 | q_q_coff, q_i_coff; | |
410 | const s32 res_scale = 1 << 15; | |
411 | const s32 delpt_shift = 1 << 8; | |
412 | s32 mag1, mag2; | |
413 | struct ath_common *common = ath9k_hw_common(ah); | |
414 | ||
415 | i2_m_q2_a0_d0 = iq_res[0] & 0xfff; | |
416 | i2_p_q2_a0_d0 = (iq_res[0] >> 12) & 0xfff; | |
417 | iq_corr_a0_d0 = ((iq_res[0] >> 24) & 0xff) + ((iq_res[1] & 0xf) << 8); | |
418 | ||
419 | if (i2_m_q2_a0_d0 > 0x800) | |
420 | i2_m_q2_a0_d0 = -((0xfff - i2_m_q2_a0_d0) + 1); | |
421 | ||
422 | if (i2_p_q2_a0_d0 > 0x800) | |
423 | i2_p_q2_a0_d0 = -((0xfff - i2_p_q2_a0_d0) + 1); | |
424 | ||
425 | if (iq_corr_a0_d0 > 0x800) | |
426 | iq_corr_a0_d0 = -((0xfff - iq_corr_a0_d0) + 1); | |
427 | ||
428 | i2_m_q2_a0_d1 = (iq_res[1] >> 4) & 0xfff; | |
429 | i2_p_q2_a0_d1 = (iq_res[2] & 0xfff); | |
430 | iq_corr_a0_d1 = (iq_res[2] >> 12) & 0xfff; | |
431 | ||
432 | if (i2_m_q2_a0_d1 > 0x800) | |
433 | i2_m_q2_a0_d1 = -((0xfff - i2_m_q2_a0_d1) + 1); | |
434 | ||
435 | if (i2_p_q2_a0_d1 > 0x800) | |
436 | i2_p_q2_a0_d1 = -((0xfff - i2_p_q2_a0_d1) + 1); | |
437 | ||
438 | if (iq_corr_a0_d1 > 0x800) | |
439 | iq_corr_a0_d1 = -((0xfff - iq_corr_a0_d1) + 1); | |
440 | ||
441 | i2_m_q2_a1_d0 = ((iq_res[2] >> 24) & 0xff) + ((iq_res[3] & 0xf) << 8); | |
442 | i2_p_q2_a1_d0 = (iq_res[3] >> 4) & 0xfff; | |
443 | iq_corr_a1_d0 = iq_res[4] & 0xfff; | |
444 | ||
445 | if (i2_m_q2_a1_d0 > 0x800) | |
446 | i2_m_q2_a1_d0 = -((0xfff - i2_m_q2_a1_d0) + 1); | |
447 | ||
448 | if (i2_p_q2_a1_d0 > 0x800) | |
449 | i2_p_q2_a1_d0 = -((0xfff - i2_p_q2_a1_d0) + 1); | |
450 | ||
451 | if (iq_corr_a1_d0 > 0x800) | |
452 | iq_corr_a1_d0 = -((0xfff - iq_corr_a1_d0) + 1); | |
453 | ||
454 | i2_m_q2_a1_d1 = (iq_res[4] >> 12) & 0xfff; | |
455 | i2_p_q2_a1_d1 = ((iq_res[4] >> 24) & 0xff) + ((iq_res[5] & 0xf) << 8); | |
456 | iq_corr_a1_d1 = (iq_res[5] >> 4) & 0xfff; | |
457 | ||
458 | if (i2_m_q2_a1_d1 > 0x800) | |
459 | i2_m_q2_a1_d1 = -((0xfff - i2_m_q2_a1_d1) + 1); | |
460 | ||
461 | if (i2_p_q2_a1_d1 > 0x800) | |
462 | i2_p_q2_a1_d1 = -((0xfff - i2_p_q2_a1_d1) + 1); | |
463 | ||
464 | if (iq_corr_a1_d1 > 0x800) | |
465 | iq_corr_a1_d1 = -((0xfff - iq_corr_a1_d1) + 1); | |
466 | ||
467 | if ((i2_p_q2_a0_d0 == 0) || (i2_p_q2_a0_d1 == 0) || | |
468 | (i2_p_q2_a1_d0 == 0) || (i2_p_q2_a1_d1 == 0)) { | |
226afe68 JP |
469 | ath_dbg(common, ATH_DBG_CALIBRATE, |
470 | "Divide by 0:\n" | |
471 | "a0_d0=%d\n" | |
472 | "a0_d1=%d\n" | |
473 | "a2_d0=%d\n" | |
474 | "a1_d1=%d\n", | |
475 | i2_p_q2_a0_d0, i2_p_q2_a0_d1, | |
476 | i2_p_q2_a1_d0, i2_p_q2_a1_d1); | |
df23acaa LR |
477 | return false; |
478 | } | |
479 | ||
480 | mag_a0_d0 = (i2_m_q2_a0_d0 * res_scale) / i2_p_q2_a0_d0; | |
481 | phs_a0_d0 = (iq_corr_a0_d0 * res_scale) / i2_p_q2_a0_d0; | |
482 | ||
483 | mag_a0_d1 = (i2_m_q2_a0_d1 * res_scale) / i2_p_q2_a0_d1; | |
484 | phs_a0_d1 = (iq_corr_a0_d1 * res_scale) / i2_p_q2_a0_d1; | |
485 | ||
486 | mag_a1_d0 = (i2_m_q2_a1_d0 * res_scale) / i2_p_q2_a1_d0; | |
487 | phs_a1_d0 = (iq_corr_a1_d0 * res_scale) / i2_p_q2_a1_d0; | |
488 | ||
489 | mag_a1_d1 = (i2_m_q2_a1_d1 * res_scale) / i2_p_q2_a1_d1; | |
490 | phs_a1_d1 = (iq_corr_a1_d1 * res_scale) / i2_p_q2_a1_d1; | |
491 | ||
492 | /* w/o analog phase shift */ | |
493 | sin_2phi_1 = (((mag_a0_d0 - mag_a0_d1) * delpt_shift) / DELPT); | |
494 | /* w/o analog phase shift */ | |
495 | cos_2phi_1 = (((phs_a0_d1 - phs_a0_d0) * delpt_shift) / DELPT); | |
496 | /* w/ analog phase shift */ | |
497 | sin_2phi_2 = (((mag_a1_d0 - mag_a1_d1) * delpt_shift) / DELPT); | |
498 | /* w/ analog phase shift */ | |
499 | cos_2phi_2 = (((phs_a1_d1 - phs_a1_d0) * delpt_shift) / DELPT); | |
500 | ||
501 | /* | |
502 | * force sin^2 + cos^2 = 1; | |
503 | * find magnitude by approximation | |
504 | */ | |
505 | mag1 = ar9003_hw_find_mag_approx(ah, cos_2phi_1, sin_2phi_1); | |
506 | mag2 = ar9003_hw_find_mag_approx(ah, cos_2phi_2, sin_2phi_2); | |
507 | ||
508 | if ((mag1 == 0) || (mag2 == 0)) { | |
226afe68 JP |
509 | ath_dbg(common, ATH_DBG_CALIBRATE, |
510 | "Divide by 0: mag1=%d, mag2=%d\n", | |
511 | mag1, mag2); | |
df23acaa LR |
512 | return false; |
513 | } | |
514 | ||
515 | /* normalization sin and cos by mag */ | |
516 | sin_2phi_1 = (sin_2phi_1 * res_scale / mag1); | |
517 | cos_2phi_1 = (cos_2phi_1 * res_scale / mag1); | |
518 | sin_2phi_2 = (sin_2phi_2 * res_scale / mag2); | |
519 | cos_2phi_2 = (cos_2phi_2 * res_scale / mag2); | |
520 | ||
521 | /* calculate IQ mismatch */ | |
522 | if (!ar9003_hw_solve_iq_cal(ah, | |
523 | sin_2phi_1, cos_2phi_1, | |
524 | sin_2phi_2, cos_2phi_2, | |
525 | mag_a0_d0, phs_a0_d0, | |
526 | mag_a1_d0, | |
527 | phs_a1_d0, solved_eq)) { | |
226afe68 JP |
528 | ath_dbg(common, ATH_DBG_CALIBRATE, |
529 | "Call to ar9003_hw_solve_iq_cal() failed.\n"); | |
df23acaa LR |
530 | return false; |
531 | } | |
532 | ||
533 | mag_tx = solved_eq[0]; | |
534 | phs_tx = solved_eq[1]; | |
535 | mag_rx = solved_eq[2]; | |
536 | phs_rx = solved_eq[3]; | |
537 | ||
226afe68 JP |
538 | ath_dbg(common, ATH_DBG_CALIBRATE, |
539 | "chain %d: mag mismatch=%d phase mismatch=%d\n", | |
540 | chain_idx, mag_tx/res_scale, phs_tx/res_scale); | |
df23acaa LR |
541 | |
542 | if (res_scale == mag_tx) { | |
226afe68 JP |
543 | ath_dbg(common, ATH_DBG_CALIBRATE, |
544 | "Divide by 0: mag_tx=%d, res_scale=%d\n", | |
545 | mag_tx, res_scale); | |
df23acaa LR |
546 | return false; |
547 | } | |
548 | ||
549 | /* calculate and quantize Tx IQ correction factor */ | |
550 | mag_corr_tx = (mag_tx * res_scale) / (res_scale - mag_tx); | |
551 | phs_corr_tx = -phs_tx; | |
552 | ||
553 | q_q_coff = (mag_corr_tx * 128 / res_scale); | |
554 | q_i_coff = (phs_corr_tx * 256 / res_scale); | |
555 | ||
226afe68 JP |
556 | ath_dbg(common, ATH_DBG_CALIBRATE, |
557 | "tx chain %d: mag corr=%d phase corr=%d\n", | |
558 | chain_idx, q_q_coff, q_i_coff); | |
df23acaa LR |
559 | |
560 | if (q_i_coff < -63) | |
561 | q_i_coff = -63; | |
562 | if (q_i_coff > 63) | |
563 | q_i_coff = 63; | |
564 | if (q_q_coff < -63) | |
565 | q_q_coff = -63; | |
566 | if (q_q_coff > 63) | |
567 | q_q_coff = 63; | |
568 | ||
569 | iqc_coeff[0] = (q_q_coff * 128) + q_i_coff; | |
570 | ||
226afe68 JP |
571 | ath_dbg(common, ATH_DBG_CALIBRATE, |
572 | "tx chain %d: iq corr coeff=%x\n", | |
573 | chain_idx, iqc_coeff[0]); | |
df23acaa LR |
574 | |
575 | if (-mag_rx == res_scale) { | |
226afe68 JP |
576 | ath_dbg(common, ATH_DBG_CALIBRATE, |
577 | "Divide by 0: mag_rx=%d, res_scale=%d\n", | |
578 | mag_rx, res_scale); | |
df23acaa LR |
579 | return false; |
580 | } | |
581 | ||
582 | /* calculate and quantize Rx IQ correction factors */ | |
583 | mag_corr_rx = (-mag_rx * res_scale) / (res_scale + mag_rx); | |
584 | phs_corr_rx = -phs_rx; | |
585 | ||
586 | q_q_coff = (mag_corr_rx * 128 / res_scale); | |
587 | q_i_coff = (phs_corr_rx * 256 / res_scale); | |
588 | ||
226afe68 JP |
589 | ath_dbg(common, ATH_DBG_CALIBRATE, |
590 | "rx chain %d: mag corr=%d phase corr=%d\n", | |
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 | ||
226afe68 JP |
604 | ath_dbg(common, ATH_DBG_CALIBRATE, |
605 | "rx chain %d: iq corr coeff=%x\n", | |
606 | chain_idx, iqc_coeff[1]); | |
df23acaa LR |
607 | |
608 | return true; | |
609 | } | |
610 | ||
858b7e36 VT |
611 | static bool ar9003_hw_compute_closest_pass_and_avg(int *mp_coeff, int *mp_avg) |
612 | { | |
613 | int diff[MPASS]; | |
614 | ||
615 | diff[0] = abs(mp_coeff[0] - mp_coeff[1]); | |
616 | diff[1] = abs(mp_coeff[1] - mp_coeff[2]); | |
617 | diff[2] = abs(mp_coeff[2] - mp_coeff[0]); | |
618 | ||
0b2084bc VT |
619 | if (diff[0] > MAX_DIFFERENCE && |
620 | diff[1] > MAX_DIFFERENCE && | |
621 | diff[2] > MAX_DIFFERENCE) | |
858b7e36 VT |
622 | return false; |
623 | ||
624 | if (diff[0] <= diff[1] && diff[0] <= diff[2]) | |
625 | *mp_avg = (mp_coeff[0] + mp_coeff[1]) / 2; | |
626 | else if (diff[1] <= diff[2]) | |
627 | *mp_avg = (mp_coeff[1] + mp_coeff[2]) / 2; | |
628 | else | |
629 | *mp_avg = (mp_coeff[2] + mp_coeff[0]) / 2; | |
630 | ||
631 | return true; | |
632 | } | |
633 | ||
634 | static void ar9003_hw_tx_iqcal_load_avg_2_passes(struct ath_hw *ah, | |
635 | u8 num_chains, | |
636 | struct coeff *coeff) | |
637 | { | |
638 | struct ath_common *common = ath9k_hw_common(ah); | |
639 | int i, im, nmeasurement; | |
640 | int magnitude, phase; | |
641 | u32 tx_corr_coeff[MAX_MEASUREMENT][AR9300_MAX_CHAINS]; | |
642 | ||
643 | memset(tx_corr_coeff, 0, sizeof(tx_corr_coeff)); | |
644 | for (i = 0; i < MAX_MEASUREMENT / 2; i++) { | |
645 | tx_corr_coeff[i * 2][0] = tx_corr_coeff[(i * 2) + 1][0] = | |
646 | AR_PHY_TX_IQCAL_CORR_COEFF_B0(i); | |
647 | if (!AR_SREV_9485(ah)) { | |
648 | tx_corr_coeff[i * 2][1] = | |
649 | tx_corr_coeff[(i * 2) + 1][1] = | |
650 | AR_PHY_TX_IQCAL_CORR_COEFF_B1(i); | |
651 | ||
652 | tx_corr_coeff[i * 2][2] = | |
653 | tx_corr_coeff[(i * 2) + 1][2] = | |
654 | AR_PHY_TX_IQCAL_CORR_COEFF_B2(i); | |
655 | } | |
656 | } | |
657 | ||
658 | /* Load the average of 2 passes */ | |
659 | for (i = 0; i < num_chains; i++) { | |
660 | if (AR_SREV_9485(ah)) | |
661 | nmeasurement = REG_READ_FIELD(ah, | |
662 | AR_PHY_TX_IQCAL_STATUS_B0_9485, | |
663 | AR_PHY_CALIBRATED_GAINS_0); | |
664 | else | |
665 | nmeasurement = REG_READ_FIELD(ah, | |
666 | AR_PHY_TX_IQCAL_STATUS_B0, | |
667 | AR_PHY_CALIBRATED_GAINS_0); | |
668 | ||
669 | if (nmeasurement > MAX_MEASUREMENT) | |
670 | nmeasurement = MAX_MEASUREMENT; | |
671 | ||
672 | for (im = 0; im < nmeasurement; im++) { | |
673 | /* | |
674 | * Determine which 2 passes are closest and compute avg | |
675 | * magnitude | |
676 | */ | |
677 | if (!ar9003_hw_compute_closest_pass_and_avg(coeff->mag_coeff[i][im], | |
678 | &magnitude)) | |
679 | goto disable_txiqcal; | |
680 | ||
681 | /* | |
682 | * Determine which 2 passes are closest and compute avg | |
683 | * phase | |
684 | */ | |
685 | if (!ar9003_hw_compute_closest_pass_and_avg(coeff->phs_coeff[i][im], | |
686 | &phase)) | |
687 | goto disable_txiqcal; | |
688 | ||
689 | coeff->iqc_coeff[0] = (magnitude & 0x7f) | | |
690 | ((phase & 0x7f) << 7); | |
691 | ||
692 | if ((im % 2) == 0) | |
693 | REG_RMW_FIELD(ah, tx_corr_coeff[im][i], | |
694 | AR_PHY_TX_IQCAL_CORR_COEFF_00_COEFF_TABLE, | |
695 | coeff->iqc_coeff[0]); | |
696 | else | |
697 | REG_RMW_FIELD(ah, tx_corr_coeff[im][i], | |
698 | AR_PHY_TX_IQCAL_CORR_COEFF_01_COEFF_TABLE, | |
699 | coeff->iqc_coeff[0]); | |
700 | } | |
701 | } | |
702 | ||
703 | REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_3, | |
704 | AR_PHY_TX_IQCAL_CONTROL_3_IQCORR_EN, 0x1); | |
705 | REG_RMW_FIELD(ah, AR_PHY_RX_IQCAL_CORR_B0, | |
706 | AR_PHY_RX_IQCAL_CORR_B0_LOOPBACK_IQCORR_EN, 0x1); | |
707 | ||
708 | return; | |
709 | ||
710 | disable_txiqcal: | |
711 | REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_3, | |
712 | AR_PHY_TX_IQCAL_CONTROL_3_IQCORR_EN, 0x0); | |
713 | REG_RMW_FIELD(ah, AR_PHY_RX_IQCAL_CORR_B0, | |
714 | AR_PHY_RX_IQCAL_CORR_B0_LOOPBACK_IQCORR_EN, 0x0); | |
715 | ||
716 | ath_dbg(common, ATH_DBG_CALIBRATE, "TX IQ Cal disabled\n"); | |
717 | } | |
718 | ||
0b2084bc VT |
719 | static void ar9003_hw_tx_iq_cal(struct ath_hw *ah) |
720 | { | |
721 | struct ath_common *common = ath9k_hw_common(ah); | |
722 | static const u32 txiqcal_status[AR9300_MAX_CHAINS] = { | |
723 | AR_PHY_TX_IQCAL_STATUS_B0, | |
724 | AR_PHY_TX_IQCAL_STATUS_B1, | |
725 | AR_PHY_TX_IQCAL_STATUS_B2, | |
726 | }; | |
727 | static const u32 chan_info_tab[] = { | |
728 | AR_PHY_CHAN_INFO_TAB_0, | |
729 | AR_PHY_CHAN_INFO_TAB_1, | |
730 | AR_PHY_CHAN_INFO_TAB_2, | |
731 | }; | |
732 | struct coeff coeff; | |
733 | s32 iq_res[6]; | |
734 | s32 i, j, ip, im, nmeasurement; | |
735 | u8 nchains = get_streams(common->tx_chainmask); | |
736 | ||
737 | for (ip = 0; ip < MPASS; ip++) { | |
738 | REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_1, | |
739 | AR_PHY_TX_IQCAQL_CONTROL_1_IQCORR_I_Q_COFF_DELPT, | |
740 | DELPT); | |
741 | REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_START, | |
742 | AR_PHY_TX_IQCAL_START_DO_CAL, | |
743 | AR_PHY_TX_IQCAL_START_DO_CAL); | |
744 | ||
745 | if (!ath9k_hw_wait(ah, AR_PHY_TX_IQCAL_START, | |
746 | AR_PHY_TX_IQCAL_START_DO_CAL, | |
747 | 0, AH_WAIT_TIMEOUT)) { | |
748 | ath_dbg(common, ATH_DBG_CALIBRATE, | |
749 | "Tx IQ Cal not complete.\n"); | |
750 | goto TX_IQ_CAL_FAILED; | |
751 | } | |
752 | ||
753 | nmeasurement = REG_READ_FIELD(ah, AR_PHY_TX_IQCAL_STATUS_B0, | |
754 | AR_PHY_CALIBRATED_GAINS_0); | |
755 | if (nmeasurement > MAX_MEASUREMENT) | |
756 | nmeasurement = MAX_MEASUREMENT; | |
757 | ||
758 | for (i = 0; i < nchains; i++) { | |
759 | ath_dbg(common, ATH_DBG_CALIBRATE, | |
760 | "Doing Tx IQ Cal for chain %d.\n", i); | |
761 | for (im = 0; im < nmeasurement; im++) { | |
762 | if (REG_READ(ah, txiqcal_status[i]) & | |
763 | AR_PHY_TX_IQCAL_STATUS_FAILED) { | |
764 | ath_dbg(common, ATH_DBG_CALIBRATE, | |
765 | "Tx IQ Cal failed for chain %d.\n", i); | |
766 | goto TX_IQ_CAL_FAILED; | |
767 | } | |
768 | ||
769 | for (j = 0; j < 3; j++) { | |
770 | u8 idx = 2 * j, | |
771 | offset = 4 * (3 * im + j); | |
772 | ||
773 | REG_RMW_FIELD(ah, AR_PHY_CHAN_INFO_MEMORY, | |
774 | AR_PHY_CHAN_INFO_TAB_S2_READ, | |
775 | 0); | |
776 | ||
777 | /* 32 bits */ | |
778 | iq_res[idx] = REG_READ(ah, | |
779 | chan_info_tab[i] + | |
780 | offset); | |
781 | ||
782 | REG_RMW_FIELD(ah, AR_PHY_CHAN_INFO_MEMORY, | |
783 | AR_PHY_CHAN_INFO_TAB_S2_READ, | |
784 | 1); | |
785 | ||
786 | /* 16 bits */ | |
787 | iq_res[idx+1] = 0xffff & REG_READ(ah, | |
788 | chan_info_tab[i] + | |
789 | offset); | |
790 | ||
791 | ath_dbg(common, ATH_DBG_CALIBRATE, | |
792 | "IQ RES[%d]=0x%x IQ_RES[%d]=0x%x\n", | |
793 | idx, iq_res[idx], idx+1, iq_res[idx+1]); | |
794 | } | |
795 | ||
796 | if (!ar9003_hw_calc_iq_corr(ah, i, iq_res, | |
797 | coeff.iqc_coeff)) { | |
798 | ath_dbg(common, ATH_DBG_CALIBRATE, | |
799 | "Failed in calculation of IQ correction.\n"); | |
800 | goto TX_IQ_CAL_FAILED; | |
801 | } | |
802 | coeff.mag_coeff[i][im][ip] = | |
803 | coeff.iqc_coeff[0] & 0x7f; | |
804 | coeff.phs_coeff[i][im][ip] = | |
805 | (coeff.iqc_coeff[0] >> 7) & 0x7f; | |
806 | ||
807 | if (coeff.mag_coeff[i][im][ip] > 63) | |
808 | coeff.mag_coeff[i][im][ip] -= 128; | |
809 | if (coeff.phs_coeff[i][im][ip] > 63) | |
810 | coeff.phs_coeff[i][im][ip] -= 128; | |
811 | ||
812 | } | |
813 | } | |
814 | } | |
815 | ||
816 | ar9003_hw_tx_iqcal_load_avg_2_passes(ah, nchains, &coeff); | |
817 | ||
818 | return; | |
819 | ||
820 | TX_IQ_CAL_FAILED: | |
821 | ath_dbg(common, ATH_DBG_CALIBRATE, "Tx IQ Cal failed\n"); | |
822 | } | |
823 | ||
858b7e36 VT |
824 | static void ar9003_hw_tx_iq_cal_run(struct ath_hw *ah) |
825 | { | |
826 | u8 tx_gain_forced; | |
827 | ||
828 | REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_1_9485, | |
829 | AR_PHY_TX_IQCAQL_CONTROL_1_IQCORR_I_Q_COFF_DELPT, DELPT); | |
830 | tx_gain_forced = REG_READ_FIELD(ah, AR_PHY_TX_FORCED_GAIN, | |
831 | AR_PHY_TXGAIN_FORCE); | |
832 | if (tx_gain_forced) | |
833 | REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN, | |
834 | AR_PHY_TXGAIN_FORCE, 0); | |
835 | ||
836 | REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_START_9485, | |
837 | AR_PHY_TX_IQCAL_START_DO_CAL_9485, 1); | |
838 | } | |
839 | ||
840 | static void ar9003_hw_tx_iq_cal_post_proc(struct ath_hw *ah) | |
841 | { | |
842 | struct ath_common *common = ath9k_hw_common(ah); | |
843 | const u32 txiqcal_status[AR9300_MAX_CHAINS] = { | |
844 | AR_PHY_TX_IQCAL_STATUS_B0_9485, | |
845 | AR_PHY_TX_IQCAL_STATUS_B1, | |
846 | AR_PHY_TX_IQCAL_STATUS_B2, | |
847 | }; | |
848 | const u_int32_t chan_info_tab[] = { | |
849 | AR_PHY_CHAN_INFO_TAB_0, | |
850 | AR_PHY_CHAN_INFO_TAB_1, | |
851 | AR_PHY_CHAN_INFO_TAB_2, | |
852 | }; | |
853 | struct coeff coeff; | |
854 | s32 iq_res[6]; | |
855 | u8 num_chains = 0; | |
856 | int i, ip, im, j; | |
857 | int nmeasurement; | |
858 | ||
859 | for (i = 0; i < AR9300_MAX_CHAINS; i++) { | |
860 | if (ah->txchainmask & (1 << i)) | |
861 | num_chains++; | |
862 | } | |
863 | ||
864 | for (ip = 0; ip < MPASS; ip++) { | |
865 | for (i = 0; i < num_chains; i++) { | |
866 | nmeasurement = REG_READ_FIELD(ah, | |
867 | AR_PHY_TX_IQCAL_STATUS_B0_9485, | |
868 | AR_PHY_CALIBRATED_GAINS_0); | |
869 | if (nmeasurement > MAX_MEASUREMENT) | |
870 | nmeasurement = MAX_MEASUREMENT; | |
871 | ||
872 | for (im = 0; im < nmeasurement; im++) { | |
873 | ath_dbg(common, ATH_DBG_CALIBRATE, | |
874 | "Doing Tx IQ Cal for chain %d.\n", i); | |
875 | ||
876 | if (REG_READ(ah, txiqcal_status[i]) & | |
877 | AR_PHY_TX_IQCAL_STATUS_FAILED) { | |
878 | ath_dbg(common, ATH_DBG_CALIBRATE, | |
879 | "Tx IQ Cal failed for chain %d.\n", i); | |
880 | goto tx_iqcal_fail; | |
881 | } | |
882 | ||
883 | for (j = 0; j < 3; j++) { | |
884 | u32 idx = 2 * j, offset = 4 * (3 * im + j); | |
885 | ||
886 | REG_RMW_FIELD(ah, | |
887 | AR_PHY_CHAN_INFO_MEMORY, | |
888 | AR_PHY_CHAN_INFO_TAB_S2_READ, | |
889 | 0); | |
890 | ||
891 | /* 32 bits */ | |
892 | iq_res[idx] = REG_READ(ah, | |
893 | chan_info_tab[i] + | |
894 | offset); | |
895 | ||
896 | REG_RMW_FIELD(ah, | |
897 | AR_PHY_CHAN_INFO_MEMORY, | |
898 | AR_PHY_CHAN_INFO_TAB_S2_READ, | |
899 | 1); | |
900 | ||
901 | /* 16 bits */ | |
902 | iq_res[idx + 1] = 0xffff & REG_READ(ah, | |
903 | chan_info_tab[i] + offset); | |
904 | ||
905 | ath_dbg(common, ATH_DBG_CALIBRATE, | |
906 | "IQ RES[%d]=0x%x" | |
907 | "IQ_RES[%d]=0x%x\n", | |
908 | idx, iq_res[idx], idx + 1, | |
909 | iq_res[idx + 1]); | |
910 | } | |
911 | ||
912 | if (!ar9003_hw_calc_iq_corr(ah, i, iq_res, | |
913 | coeff.iqc_coeff)) { | |
914 | ath_dbg(common, ATH_DBG_CALIBRATE, | |
915 | "Failed in calculation of IQ correction.\n"); | |
916 | goto tx_iqcal_fail; | |
917 | } | |
918 | ||
919 | coeff.mag_coeff[i][im][ip] = | |
920 | coeff.iqc_coeff[0] & 0x7f; | |
921 | coeff.phs_coeff[i][im][ip] = | |
922 | (coeff.iqc_coeff[0] >> 7) & 0x7f; | |
923 | ||
924 | if (coeff.mag_coeff[i][im][ip] > 63) | |
925 | coeff.mag_coeff[i][im][ip] -= 128; | |
926 | if (coeff.phs_coeff[i][im][ip] > 63) | |
927 | coeff.phs_coeff[i][im][ip] -= 128; | |
928 | } | |
929 | } | |
930 | } | |
931 | ar9003_hw_tx_iqcal_load_avg_2_passes(ah, num_chains, &coeff); | |
932 | ||
933 | return; | |
934 | ||
935 | tx_iqcal_fail: | |
936 | ath_dbg(common, ATH_DBG_CALIBRATE, "Tx IQ Cal failed\n"); | |
937 | return; | |
938 | } | |
df23acaa LR |
939 | static bool ar9003_hw_init_cal(struct ath_hw *ah, |
940 | struct ath9k_channel *chan) | |
941 | { | |
942 | struct ath_common *common = ath9k_hw_common(ah); | |
e758ff8f | 943 | struct ath9k_hw_capabilities *pCap = &ah->caps; |
a9d85fbd | 944 | int val; |
df23acaa | 945 | |
a9d85fbd | 946 | val = REG_READ(ah, AR_ENT_OTP); |
226afe68 | 947 | ath_dbg(common, ATH_DBG_CALIBRATE, "ath9k: AR_ENT_OTP 0x%x\n", val); |
a9d85fbd | 948 | |
e758ff8f VT |
949 | /* Configure rx/tx chains before running AGC/TxiQ cals */ |
950 | if (val & AR_ENT_OTP_CHAIN2_DISABLE) | |
a9d85fbd SB |
951 | ar9003_hw_set_chain_masks(ah, 0x3, 0x3); |
952 | else | |
e758ff8f VT |
953 | ar9003_hw_set_chain_masks(ah, pCap->rx_chainmask, |
954 | pCap->tx_chainmask); | |
df23acaa | 955 | |
c5395b67 | 956 | /* Do Tx IQ Calibration */ |
858b7e36 VT |
957 | if (AR_SREV_9485(ah)) |
958 | ar9003_hw_tx_iq_cal_run(ah); | |
959 | else | |
960 | ar9003_hw_tx_iq_cal(ah); | |
961 | ||
c5395b67 LR |
962 | REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_DIS); |
963 | udelay(5); | |
964 | REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN); | |
965 | ||
df23acaa LR |
966 | /* Calibrate the AGC */ |
967 | REG_WRITE(ah, AR_PHY_AGC_CONTROL, | |
968 | REG_READ(ah, AR_PHY_AGC_CONTROL) | | |
969 | AR_PHY_AGC_CONTROL_CAL); | |
970 | ||
971 | /* Poll for offset calibration complete */ | |
972 | if (!ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_CAL, | |
973 | 0, AH_WAIT_TIMEOUT)) { | |
226afe68 JP |
974 | ath_dbg(common, ATH_DBG_CALIBRATE, |
975 | "offset calibration failed to complete in 1ms; noisy environment?\n"); | |
df23acaa LR |
976 | return false; |
977 | } | |
978 | ||
858b7e36 VT |
979 | if (AR_SREV_9485(ah)) |
980 | ar9003_hw_tx_iq_cal_post_proc(ah); | |
981 | ||
df23acaa LR |
982 | /* Revert chainmasks to their original values before NF cal */ |
983 | ar9003_hw_set_chain_masks(ah, ah->rxchainmask, ah->txchainmask); | |
984 | ||
00c86590 FF |
985 | ath9k_hw_start_nfcal(ah, true); |
986 | ||
df23acaa LR |
987 | /* Initialize list pointers */ |
988 | ah->cal_list = ah->cal_list_last = ah->cal_list_curr = NULL; | |
6497827f | 989 | ah->supp_cals = IQ_MISMATCH_CAL; |
df23acaa | 990 | |
6497827f | 991 | if (ah->supp_cals & IQ_MISMATCH_CAL) { |
df23acaa LR |
992 | INIT_CAL(&ah->iq_caldata); |
993 | INSERT_CAL(ah, &ah->iq_caldata); | |
226afe68 JP |
994 | ath_dbg(common, ATH_DBG_CALIBRATE, |
995 | "enabling IQ Calibration.\n"); | |
df23acaa LR |
996 | } |
997 | ||
6497827f | 998 | if (ah->supp_cals & TEMP_COMP_CAL) { |
df23acaa LR |
999 | INIT_CAL(&ah->tempCompCalData); |
1000 | INSERT_CAL(ah, &ah->tempCompCalData); | |
226afe68 JP |
1001 | ath_dbg(common, ATH_DBG_CALIBRATE, |
1002 | "enabling Temperature Compensation Calibration.\n"); | |
df23acaa LR |
1003 | } |
1004 | ||
1005 | /* Initialize current pointer to first element in list */ | |
1006 | ah->cal_list_curr = ah->cal_list; | |
1007 | ||
1008 | if (ah->cal_list_curr) | |
1009 | ath9k_hw_reset_calibration(ah, ah->cal_list_curr); | |
1010 | ||
20bd2a09 FF |
1011 | if (ah->caldata) |
1012 | ah->caldata->CalValid = 0; | |
df23acaa LR |
1013 | |
1014 | return true; | |
77d6d39a LR |
1015 | } |
1016 | ||
795f5e2c LR |
1017 | void ar9003_hw_attach_calib_ops(struct ath_hw *ah) |
1018 | { | |
1019 | struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah); | |
1020 | struct ath_hw_ops *ops = ath9k_hw_ops(ah); | |
1021 | ||
1022 | priv_ops->init_cal_settings = ar9003_hw_init_cal_settings; | |
1023 | priv_ops->init_cal = ar9003_hw_init_cal; | |
1024 | priv_ops->setup_calibration = ar9003_hw_setup_calibration; | |
795f5e2c LR |
1025 | |
1026 | ops->calibrate = ar9003_hw_calibrate; | |
1027 | } |