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GUI: Fix Tomato RAF theme for all builds. Compilation typo.
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / drivers / net / wireless / ath / ath9k / ar9003_paprd.c
blob716db414c258f254263a47238f45aa9fd6c2d813
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 "ar9003_phy.h"
19
20 void ar9003_paprd_enable(struct ath_hw *ah, bool val)
21 {
22 REG_RMW_FIELD(ah, AR_PHY_PAPRD_CTRL0_B0,
23 AR_PHY_PAPRD_CTRL0_PAPRD_ENABLE, !!val);
24 REG_RMW_FIELD(ah, AR_PHY_PAPRD_CTRL0_B1,
25 AR_PHY_PAPRD_CTRL0_PAPRD_ENABLE, !!val);
26 REG_RMW_FIELD(ah, AR_PHY_PAPRD_CTRL0_B2,
27 AR_PHY_PAPRD_CTRL0_PAPRD_ENABLE, !!val);
28 }
29 EXPORT_SYMBOL(ar9003_paprd_enable);
30
31 static void ar9003_paprd_setup_single_table(struct ath_hw *ah)
32 {
33 struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep;
34 struct ar9300_modal_eep_header *hdr;
35 const u32 ctrl0[3] = {
36 AR_PHY_PAPRD_CTRL0_B0,
37 AR_PHY_PAPRD_CTRL0_B1,
38 AR_PHY_PAPRD_CTRL0_B2
39 };
40 const u32 ctrl1[3] = {
41 AR_PHY_PAPRD_CTRL1_B0,
42 AR_PHY_PAPRD_CTRL1_B1,
43 AR_PHY_PAPRD_CTRL1_B2
44 };
45 u32 am_mask, ht40_mask;
46 int i;
47
48 if (ah->curchan && IS_CHAN_5GHZ(ah->curchan))
49 hdr = &eep->modalHeader5G;
50 else
51 hdr = &eep->modalHeader2G;
52
53 am_mask = le32_to_cpu(hdr->papdRateMaskHt20);
54 ht40_mask = le32_to_cpu(hdr->papdRateMaskHt40);
55
56 REG_RMW_FIELD(ah, AR_PHY_PAPRD_AM2AM, AR_PHY_PAPRD_AM2AM_MASK, am_mask);
57 REG_RMW_FIELD(ah, AR_PHY_PAPRD_AM2PM, AR_PHY_PAPRD_AM2PM_MASK, am_mask);
58 REG_RMW_FIELD(ah, AR_PHY_PAPRD_HT40, AR_PHY_PAPRD_HT40_MASK, ht40_mask);
59
60 for (i = 0; i < 3; i++) {
61 REG_RMW_FIELD(ah, ctrl0[i],
62 AR_PHY_PAPRD_CTRL0_USE_SINGLE_TABLE_MASK, 1);
63 REG_RMW_FIELD(ah, ctrl1[i],
64 AR_PHY_PAPRD_CTRL1_ADAPTIVE_AM2PM_ENABLE, 1);
65 REG_RMW_FIELD(ah, ctrl1[i],
66 AR_PHY_PAPRD_CTRL1_ADAPTIVE_AM2AM_ENABLE, 1);
67 REG_RMW_FIELD(ah, ctrl1[i],
68 AR_PHY_PAPRD_CTRL1_ADAPTIVE_SCALING_ENA, 0);
69 REG_RMW_FIELD(ah, ctrl1[i],
70 AR_PHY_PAPRD_CTRL1_PA_GAIN_SCALE_FACT_MASK, 181);
71 REG_RMW_FIELD(ah, ctrl1[i],
72 AR_PHY_PAPRD_CTRL1_PAPRD_MAG_SCALE_FACT, 361);
73 REG_RMW_FIELD(ah, ctrl1[i],
74 AR_PHY_PAPRD_CTRL1_ADAPTIVE_SCALING_ENA, 0);
75 REG_RMW_FIELD(ah, ctrl0[i],
76 AR_PHY_PAPRD_CTRL0_PAPRD_MAG_THRSH, 3);
77 }
78
79 ar9003_paprd_enable(ah, false);
80
81 REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL1,
82 AR_PHY_PAPRD_TRAINER_CNTL1_CF_PAPRD_LB_SKIP, 0x30);
83 REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL1,
84 AR_PHY_PAPRD_TRAINER_CNTL1_CF_PAPRD_LB_ENABLE, 1);
85 REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL1,
86 AR_PHY_PAPRD_TRAINER_CNTL1_CF_PAPRD_TX_GAIN_FORCE, 1);
87 REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL1,
88 AR_PHY_PAPRD_TRAINER_CNTL1_CF_PAPRD_RX_BB_GAIN_FORCE, 0);
89 REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL1,
90 AR_PHY_PAPRD_TRAINER_CNTL1_CF_PAPRD_IQCORR_ENABLE, 0);
91 REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL1,
92 AR_PHY_PAPRD_TRAINER_CNTL1_CF_PAPRD_AGC2_SETTLING, 28);
93 REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL1,
94 AR_PHY_PAPRD_TRAINER_CNTL1_CF_CF_PAPRD_TRAIN_ENABLE, 1);
95 REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL2,
96 AR_PHY_PAPRD_TRAINER_CNTL2_CF_PAPRD_INIT_RX_BB_GAIN, 147);
97 REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3,
98 AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_FINE_CORR_LEN, 4);
99 REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3,
100 AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_COARSE_CORR_LEN, 4);
101 REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3,
102 AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_NUM_CORR_STAGES, 7);
103 REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3,
104 AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_MIN_LOOPBACK_DEL, 1);
105 REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3,
106 AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_QUICK_DROP, -6);
107 REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3,
108 AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_ADC_DESIRED_SIZE,
109 -15);
110 REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3,
111 AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_BBTXMIX_DISABLE, 1);
112 REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL4,
113 AR_PHY_PAPRD_TRAINER_CNTL4_CF_PAPRD_SAFETY_DELTA, 0);
114 REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL4,
115 AR_PHY_PAPRD_TRAINER_CNTL4_CF_PAPRD_MIN_CORR, 400);
116 REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL4,
117 AR_PHY_PAPRD_TRAINER_CNTL4_CF_PAPRD_NUM_TRAIN_SAMPLES,
118 100);
119 REG_RMW_FIELD(ah, AR_PHY_PAPRD_PRE_POST_SCALE_0_B0,
120 AR_PHY_PAPRD_PRE_POST_SCALING, 261376);
121 REG_RMW_FIELD(ah, AR_PHY_PAPRD_PRE_POST_SCALE_1_B0,
122 AR_PHY_PAPRD_PRE_POST_SCALING, 248079);
123 REG_RMW_FIELD(ah, AR_PHY_PAPRD_PRE_POST_SCALE_2_B0,
124 AR_PHY_PAPRD_PRE_POST_SCALING, 233759);
125 REG_RMW_FIELD(ah, AR_PHY_PAPRD_PRE_POST_SCALE_3_B0,
126 AR_PHY_PAPRD_PRE_POST_SCALING, 220464);
127 REG_RMW_FIELD(ah, AR_PHY_PAPRD_PRE_POST_SCALE_4_B0,
128 AR_PHY_PAPRD_PRE_POST_SCALING, 208194);
129 REG_RMW_FIELD(ah, AR_PHY_PAPRD_PRE_POST_SCALE_5_B0,
130 AR_PHY_PAPRD_PRE_POST_SCALING, 196949);
131 REG_RMW_FIELD(ah, AR_PHY_PAPRD_PRE_POST_SCALE_6_B0,
132 AR_PHY_PAPRD_PRE_POST_SCALING, 185706);
133 REG_RMW_FIELD(ah, AR_PHY_PAPRD_PRE_POST_SCALE_7_B0,
134 AR_PHY_PAPRD_PRE_POST_SCALING, 175487);
135 }
136
137 static void ar9003_paprd_get_gain_table(struct ath_hw *ah)
138 {
139 u32 *entry = ah->paprd_gain_table_entries;
140 u8 *index = ah->paprd_gain_table_index;
141 u32 reg = AR_PHY_TXGAIN_TABLE;
142 int i;
143
144 memset(entry, 0, sizeof(ah->paprd_gain_table_entries));
145 memset(index, 0, sizeof(ah->paprd_gain_table_index));
146
147 for (i = 0; i < 32; i++) {
148 entry[i] = REG_READ(ah, reg);
149 index[i] = (entry[i] >> 24) & 0xff;
150 reg += 4;
151 }
152 }
153
154 static unsigned int ar9003_get_desired_gain(struct ath_hw *ah, int chain,
155 int target_power)
156 {
157 int olpc_gain_delta = 0;
158 int alpha_therm, alpha_volt;
159 int therm_cal_value, volt_cal_value;
160 int therm_value, volt_value;
161 int thermal_gain_corr, voltage_gain_corr;
162 int desired_scale, desired_gain = 0;
163 u32 reg;
164
165 REG_CLR_BIT(ah, AR_PHY_PAPRD_TRAINER_STAT1,
166 AR_PHY_PAPRD_TRAINER_STAT1_PAPRD_TRAIN_DONE);
167 desired_scale = REG_READ_FIELD(ah, AR_PHY_TPC_12,
168 AR_PHY_TPC_12_DESIRED_SCALE_HT40_5);
169 alpha_therm = REG_READ_FIELD(ah, AR_PHY_TPC_19,
170 AR_PHY_TPC_19_ALPHA_THERM);
171 alpha_volt = REG_READ_FIELD(ah, AR_PHY_TPC_19,
172 AR_PHY_TPC_19_ALPHA_VOLT);
173 therm_cal_value = REG_READ_FIELD(ah, AR_PHY_TPC_18,
174 AR_PHY_TPC_18_THERM_CAL_VALUE);
175 volt_cal_value = REG_READ_FIELD(ah, AR_PHY_TPC_18,
176 AR_PHY_TPC_18_VOLT_CAL_VALUE);
177 therm_value = REG_READ_FIELD(ah, AR_PHY_BB_THERM_ADC_4,
178 AR_PHY_BB_THERM_ADC_4_LATEST_THERM_VALUE);
179 volt_value = REG_READ_FIELD(ah, AR_PHY_BB_THERM_ADC_4,
180 AR_PHY_BB_THERM_ADC_4_LATEST_VOLT_VALUE);
181
182 if (chain == 0)
183 reg = AR_PHY_TPC_11_B0;
184 else if (chain == 1)
185 reg = AR_PHY_TPC_11_B1;
186 else
187 reg = AR_PHY_TPC_11_B2;
188
189 olpc_gain_delta = REG_READ_FIELD(ah, reg,
190 AR_PHY_TPC_11_OLPC_GAIN_DELTA);
191
192 if (olpc_gain_delta >= 128)
193 olpc_gain_delta = olpc_gain_delta - 256;
194
195 thermal_gain_corr = (alpha_therm * (therm_value - therm_cal_value) +
196 (256 / 2)) / 256;
197 voltage_gain_corr = (alpha_volt * (volt_value - volt_cal_value) +
198 (128 / 2)) / 128;
199 desired_gain = target_power - olpc_gain_delta - thermal_gain_corr -
200 voltage_gain_corr + desired_scale;
201
202 return desired_gain;
203 }
204
205 static void ar9003_tx_force_gain(struct ath_hw *ah, unsigned int gain_index)
206 {
207 int selected_gain_entry, txbb1dbgain, txbb6dbgain, txmxrgain;
208 int padrvgnA, padrvgnB, padrvgnC, padrvgnD;
209 u32 *gain_table_entries = ah->paprd_gain_table_entries;
210
211 selected_gain_entry = gain_table_entries[gain_index];
212 txbb1dbgain = selected_gain_entry & 0x7;
213 txbb6dbgain = (selected_gain_entry >> 3) & 0x3;
214 txmxrgain = (selected_gain_entry >> 5) & 0xf;
215 padrvgnA = (selected_gain_entry >> 9) & 0xf;
216 padrvgnB = (selected_gain_entry >> 13) & 0xf;
217 padrvgnC = (selected_gain_entry >> 17) & 0xf;
218 padrvgnD = (selected_gain_entry >> 21) & 0x3;
219
220 REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
221 AR_PHY_TX_FORCED_GAIN_FORCED_TXBB1DBGAIN, txbb1dbgain);
222 REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
223 AR_PHY_TX_FORCED_GAIN_FORCED_TXBB6DBGAIN, txbb6dbgain);
224 REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
225 AR_PHY_TX_FORCED_GAIN_FORCED_TXMXRGAIN, txmxrgain);
226 REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
227 AR_PHY_TX_FORCED_GAIN_FORCED_PADRVGNA, padrvgnA);
228 REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
229 AR_PHY_TX_FORCED_GAIN_FORCED_PADRVGNB, padrvgnB);
230 REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
231 AR_PHY_TX_FORCED_GAIN_FORCED_PADRVGNC, padrvgnC);
232 REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
233 AR_PHY_TX_FORCED_GAIN_FORCED_PADRVGND, padrvgnD);
234 REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
235 AR_PHY_TX_FORCED_GAIN_FORCED_ENABLE_PAL, 0);
236 REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
237 AR_PHY_TX_FORCED_GAIN_FORCE_TX_GAIN, 0);
238 REG_RMW_FIELD(ah, AR_PHY_TPC_1, AR_PHY_TPC_1_FORCED_DAC_GAIN, 0);
239 REG_RMW_FIELD(ah, AR_PHY_TPC_1, AR_PHY_TPC_1_FORCE_DAC_GAIN, 0);
240 }
241
242 static inline int find_expn(int num)
243 {
244 return fls(num) - 1;
245 }
246
247 static inline int find_proper_scale(int expn, int N)
248 {
249 return (expn > N) ? expn - 10 : 0;
250 }
251
252 #define NUM_BIN 23
253
254 static bool create_pa_curve(u32 *data_L, u32 *data_U, u32 *pa_table, u16 *gain)
255 {
256 unsigned int thresh_accum_cnt;
257 int x_est[NUM_BIN + 1], Y[NUM_BIN + 1], theta[NUM_BIN + 1];
258 int PA_in[NUM_BIN + 1];
259 int B1_tmp[NUM_BIN + 1], B2_tmp[NUM_BIN + 1];
260 unsigned int B1_abs_max, B2_abs_max;
261 int max_index, scale_factor;
262 int y_est[NUM_BIN + 1];
263 int x_est_fxp1_nonlin, x_tilde[NUM_BIN + 1];
264 unsigned int x_tilde_abs;
265 int G_fxp, Y_intercept, order_x_by_y, M, I, L, sum_y_sqr, sum_y_quad;
266 int Q_x, Q_B1, Q_B2, beta_raw, alpha_raw, scale_B;
267 int Q_scale_B, Q_beta, Q_alpha, alpha, beta, order_1, order_2;
268 int order1_5x, order2_3x, order1_5x_rem, order2_3x_rem;
269 int y5, y3, tmp;
270 int theta_low_bin = 0;
271 int i;
272
273 /* disregard any bin that contains <= 16 samples */
274 thresh_accum_cnt = 16;
275 scale_factor = 5;
276 max_index = 0;
277 memset(theta, 0, sizeof(theta));
278 memset(x_est, 0, sizeof(x_est));
279 memset(Y, 0, sizeof(Y));
280 memset(y_est, 0, sizeof(y_est));
281 memset(x_tilde, 0, sizeof(x_tilde));
282
283 for (i = 0; i < NUM_BIN; i++) {
284 s32 accum_cnt, accum_tx, accum_rx, accum_ang;
285
286 /* number of samples */
287 accum_cnt = data_L[i] & 0xffff;
288
289 if (accum_cnt <= thresh_accum_cnt)
290 continue;
291
292 /* sum(tx amplitude) */
293 accum_tx = ((data_L[i] >> 16) & 0xffff) |
294 ((data_U[i] & 0x7ff) << 16);
295
296 /* sum(rx amplitude distance to lower bin edge) */
297 accum_rx = ((data_U[i] >> 11) & 0x1f) |
298 ((data_L[i + 23] & 0xffff) << 5);
299
300 /* sum(angles) */
301 accum_ang = ((data_L[i + 23] >> 16) & 0xffff) |
302 ((data_U[i + 23] & 0x7ff) << 16);
303
304 accum_tx <<= scale_factor;
305 accum_rx <<= scale_factor;
306 x_est[i + 1] = (((accum_tx + accum_cnt) / accum_cnt) + 32) >>
307 scale_factor;
308
309 Y[i + 1] = ((((accum_rx + accum_cnt) / accum_cnt) + 32) >>
310 scale_factor) +
311 (1 << scale_factor) * max_index + 16;
312
313 if (accum_ang >= (1 << 26))
314 accum_ang -= 1 << 27;
315
316 theta[i + 1] = ((accum_ang * (1 << scale_factor)) + accum_cnt) /
317 accum_cnt;
318
319 max_index++;
320 }
321
322 /*
323 * Find average theta of first 5 bin and all of those to same value.
324 * Curve is linear at that range.
325 */
326 for (i = 1; i < 6; i++)
327 theta_low_bin += theta[i];
328
329 theta_low_bin = theta_low_bin / 5;
330 for (i = 1; i < 6; i++)
331 theta[i] = theta_low_bin;
332
333 /* Set values at origin */
334 theta[0] = theta_low_bin;
335 for (i = 0; i <= max_index; i++)
336 theta[i] -= theta_low_bin;
337
338 x_est[0] = 0;
339 Y[0] = 0;
340 scale_factor = 8;
341
342 /* low signal gain */
343 if (x_est[6] == x_est[3])
344 return false;
345
346 G_fxp =
347 (((Y[6] - Y[3]) * 1 << scale_factor) +
348 (x_est[6] - x_est[3])) / (x_est[6] - x_est[3]);
349
350 /* prevent division by zero */
351 if (G_fxp == 0)
352 return false;
353
354 Y_intercept =
355 (G_fxp * (x_est[0] - x_est[3]) +
356 (1 << scale_factor)) / (1 << scale_factor) + Y[3];
357
358 for (i = 0; i <= max_index; i++)
359 y_est[i] = Y[i] - Y_intercept;
360
361 for (i = 0; i <= 3; i++) {
362 y_est[i] = i * 32;
363 x_est[i] = ((y_est[i] * 1 << scale_factor) + G_fxp) / G_fxp;
364 }
365
366 if (y_est[max_index] == 0)
367 return false;
368
369 x_est_fxp1_nonlin =
370 x_est[max_index] - ((1 << scale_factor) * y_est[max_index] +
371 G_fxp) / G_fxp;
372
373 order_x_by_y =
374 (x_est_fxp1_nonlin + y_est[max_index]) / y_est[max_index];
375
376 if (order_x_by_y == 0)
377 M = 10;
378 else if (order_x_by_y == 1)
379 M = 9;
380 else
381 M = 8;
382
383 I = (max_index > 15) ? 7 : max_index >> 1;
384 L = max_index - I;
385 scale_factor = 8;
386 sum_y_sqr = 0;
387 sum_y_quad = 0;
388 x_tilde_abs = 0;
389
390 for (i = 0; i <= L; i++) {
391 unsigned int y_sqr;
392 unsigned int y_quad;
393 unsigned int tmp_abs;
394
395 /* prevent division by zero */
396 if (y_est[i + I] == 0)
397 return false;
398
399 x_est_fxp1_nonlin =
400 x_est[i + I] - ((1 << scale_factor) * y_est[i + I] +
401 G_fxp) / G_fxp;
402
403 x_tilde[i] =
404 (x_est_fxp1_nonlin * (1 << M) + y_est[i + I]) / y_est[i +
405 I];
406 x_tilde[i] =
407 (x_tilde[i] * (1 << M) + y_est[i + I]) / y_est[i + I];
408 x_tilde[i] =
409 (x_tilde[i] * (1 << M) + y_est[i + I]) / y_est[i + I];
410 y_sqr =
411 (y_est[i + I] * y_est[i + I] +
412 (scale_factor * scale_factor)) / (scale_factor *
413 scale_factor);
414 tmp_abs = abs(x_tilde[i]);
415 if (tmp_abs > x_tilde_abs)
416 x_tilde_abs = tmp_abs;
417
418 y_quad = y_sqr * y_sqr;
419 sum_y_sqr = sum_y_sqr + y_sqr;
420 sum_y_quad = sum_y_quad + y_quad;
421 B1_tmp[i] = y_sqr * (L + 1);
422 B2_tmp[i] = y_sqr;
423 }
424
425 B1_abs_max = 0;
426 B2_abs_max = 0;
427 for (i = 0; i <= L; i++) {
428 int abs_val;
429
430 B1_tmp[i] -= sum_y_sqr;
431 B2_tmp[i] = sum_y_quad - sum_y_sqr * B2_tmp[i];
432
433 abs_val = abs(B1_tmp[i]);
434 if (abs_val > B1_abs_max)
435 B1_abs_max = abs_val;
436
437 abs_val = abs(B2_tmp[i]);
438 if (abs_val > B2_abs_max)
439 B2_abs_max = abs_val;
440 }
441
442 Q_x = find_proper_scale(find_expn(x_tilde_abs), 10);
443 Q_B1 = find_proper_scale(find_expn(B1_abs_max), 10);
444 Q_B2 = find_proper_scale(find_expn(B2_abs_max), 10);
445
446 beta_raw = 0;
447 alpha_raw = 0;
448 for (i = 0; i <= L; i++) {
449 x_tilde[i] = x_tilde[i] / (1 << Q_x);
450 B1_tmp[i] = B1_tmp[i] / (1 << Q_B1);
451 B2_tmp[i] = B2_tmp[i] / (1 << Q_B2);
452 beta_raw = beta_raw + B1_tmp[i] * x_tilde[i];
453 alpha_raw = alpha_raw + B2_tmp[i] * x_tilde[i];
454 }
455
456 scale_B =
457 ((sum_y_quad / scale_factor) * (L + 1) -
458 (sum_y_sqr / scale_factor) * sum_y_sqr) * scale_factor;
459
460 Q_scale_B = find_proper_scale(find_expn(abs(scale_B)), 10);
461 scale_B = scale_B / (1 << Q_scale_B);
462 if (scale_B == 0)
463 return false;
464 Q_beta = find_proper_scale(find_expn(abs(beta_raw)), 10);
465 Q_alpha = find_proper_scale(find_expn(abs(alpha_raw)), 10);
466 beta_raw = beta_raw / (1 << Q_beta);
467 alpha_raw = alpha_raw / (1 << Q_alpha);
468 alpha = (alpha_raw << 10) / scale_B;
469 beta = (beta_raw << 10) / scale_B;
470 order_1 = 3 * M - Q_x - Q_B1 - Q_beta + 10 + Q_scale_B;
471 order_2 = 3 * M - Q_x - Q_B2 - Q_alpha + 10 + Q_scale_B;
472 order1_5x = order_1 / 5;
473 order2_3x = order_2 / 3;
474 order1_5x_rem = order_1 - 5 * order1_5x;
475 order2_3x_rem = order_2 - 3 * order2_3x;
476
477 for (i = 0; i < PAPRD_TABLE_SZ; i++) {
478 tmp = i * 32;
479 y5 = ((beta * tmp) >> 6) >> order1_5x;
480 y5 = (y5 * tmp) >> order1_5x;
481 y5 = (y5 * tmp) >> order1_5x;
482 y5 = (y5 * tmp) >> order1_5x;
483 y5 = (y5 * tmp) >> order1_5x;
484 y5 = y5 >> order1_5x_rem;
485 y3 = (alpha * tmp) >> order2_3x;
486 y3 = (y3 * tmp) >> order2_3x;
487 y3 = (y3 * tmp) >> order2_3x;
488 y3 = y3 >> order2_3x_rem;
489 PA_in[i] = y5 + y3 + (256 * tmp) / G_fxp;
490
491 if (i >= 2) {
492 tmp = PA_in[i] - PA_in[i - 1];
493 if (tmp < 0)
494 PA_in[i] =
495 PA_in[i - 1] + (PA_in[i - 1] -
496 PA_in[i - 2]);
497 }
498
499 PA_in[i] = (PA_in[i] < 1400) ? PA_in[i] : 1400;
500 }
501
502 beta_raw = 0;
503 alpha_raw = 0;
504
505 for (i = 0; i <= L; i++) {
506 int theta_tilde =
507 ((theta[i + I] << M) + y_est[i + I]) / y_est[i + I];
508 theta_tilde =
509 ((theta_tilde << M) + y_est[i + I]) / y_est[i + I];
510 theta_tilde =
511 ((theta_tilde << M) + y_est[i + I]) / y_est[i + I];
512 beta_raw = beta_raw + B1_tmp[i] * theta_tilde;
513 alpha_raw = alpha_raw + B2_tmp[i] * theta_tilde;
514 }
515
516 Q_beta = find_proper_scale(find_expn(abs(beta_raw)), 10);
517 Q_alpha = find_proper_scale(find_expn(abs(alpha_raw)), 10);
518 beta_raw = beta_raw / (1 << Q_beta);
519 alpha_raw = alpha_raw / (1 << Q_alpha);
520
521 alpha = (alpha_raw << 10) / scale_B;
522 beta = (beta_raw << 10) / scale_B;
523 order_1 = 3 * M - Q_x - Q_B1 - Q_beta + 10 + Q_scale_B + 5;
524 order_2 = 3 * M - Q_x - Q_B2 - Q_alpha + 10 + Q_scale_B + 5;
525 order1_5x = order_1 / 5;
526 order2_3x = order_2 / 3;
527 order1_5x_rem = order_1 - 5 * order1_5x;
528 order2_3x_rem = order_2 - 3 * order2_3x;
529
530 for (i = 0; i < PAPRD_TABLE_SZ; i++) {
531 int PA_angle;
532
533 /* pa_table[4] is calculated from PA_angle for i=5 */
534 if (i == 4)
535 continue;
536
537 tmp = i * 32;
538 if (beta > 0)
539 y5 = (((beta * tmp - 64) >> 6) -
540 (1 << order1_5x)) / (1 << order1_5x);
541 else
542 y5 = ((((beta * tmp - 64) >> 6) +
543 (1 << order1_5x)) / (1 << order1_5x));
544
545 y5 = (y5 * tmp) / (1 << order1_5x);
546 y5 = (y5 * tmp) / (1 << order1_5x);
547 y5 = (y5 * tmp) / (1 << order1_5x);
548 y5 = (y5 * tmp) / (1 << order1_5x);
549 y5 = y5 / (1 << order1_5x_rem);
550
551 if (beta > 0)
552 y3 = (alpha * tmp -
553 (1 << order2_3x)) / (1 << order2_3x);
554 else
555 y3 = (alpha * tmp +
556 (1 << order2_3x)) / (1 << order2_3x);
557 y3 = (y3 * tmp) / (1 << order2_3x);
558 y3 = (y3 * tmp) / (1 << order2_3x);
559 y3 = y3 / (1 << order2_3x_rem);
560
561 if (i < 4) {
562 PA_angle = 0;
563 } else {
564 PA_angle = y5 + y3;
565 if (PA_angle < -150)
566 PA_angle = -150;
567 else if (PA_angle > 150)
568 PA_angle = 150;
569 }
570
571 pa_table[i] = ((PA_in[i] & 0x7ff) << 11) + (PA_angle & 0x7ff);
572 if (i == 5) {
573 PA_angle = (PA_angle + 2) >> 1;
574 pa_table[i - 1] = ((PA_in[i - 1] & 0x7ff) << 11) +
575 (PA_angle & 0x7ff);
576 }
577 }
578
579 *gain = G_fxp;
580 return true;
581 }
582
583 void ar9003_paprd_populate_single_table(struct ath_hw *ah,
584 struct ath9k_hw_cal_data *caldata,
585 int chain)
586 {
587 u32 *paprd_table_val = caldata->pa_table[chain];
588 u32 small_signal_gain = caldata->small_signal_gain[chain];
589 u32 training_power;
590 u32 reg = 0;
591 int i;
592
593 training_power =
594 REG_READ_FIELD(ah, AR_PHY_POWERTX_RATE5,
595 AR_PHY_POWERTX_RATE5_POWERTXHT20_0);
596 training_power -= 4;
597
598 if (chain == 0)
599 reg = AR_PHY_PAPRD_MEM_TAB_B0;
600 else if (chain == 1)
601 reg = AR_PHY_PAPRD_MEM_TAB_B1;
602 else if (chain == 2)
603 reg = AR_PHY_PAPRD_MEM_TAB_B2;
604
605 for (i = 0; i < PAPRD_TABLE_SZ; i++) {
606 REG_WRITE(ah, reg, paprd_table_val[i]);
607 reg = reg + 4;
608 }
609
610 if (chain == 0)
611 reg = AR_PHY_PA_GAIN123_B0;
612 else if (chain == 1)
613 reg = AR_PHY_PA_GAIN123_B1;
614 else
615 reg = AR_PHY_PA_GAIN123_B2;
616
617 REG_RMW_FIELD(ah, reg, AR_PHY_PA_GAIN123_PA_GAIN1, small_signal_gain);
618
619 REG_RMW_FIELD(ah, AR_PHY_PAPRD_CTRL1_B0,
620 AR_PHY_PAPRD_CTRL1_PAPRD_POWER_AT_AM2AM_CAL,
621 training_power);
622
623 REG_RMW_FIELD(ah, AR_PHY_PAPRD_CTRL1_B1,
624 AR_PHY_PAPRD_CTRL1_PAPRD_POWER_AT_AM2AM_CAL,
625 training_power);
626
627 REG_RMW_FIELD(ah, AR_PHY_PAPRD_CTRL1_B2,
628 AR_PHY_PAPRD_CTRL1_PAPRD_POWER_AT_AM2AM_CAL,
629 training_power);
630 }
631 EXPORT_SYMBOL(ar9003_paprd_populate_single_table);
632
633 int ar9003_paprd_setup_gain_table(struct ath_hw *ah, int chain)
634 {
635
636 unsigned int i, desired_gain, gain_index;
637 unsigned int train_power;
638
639 train_power = REG_READ_FIELD(ah, AR_PHY_POWERTX_RATE5,
640 AR_PHY_POWERTX_RATE5_POWERTXHT20_0);
641
642 train_power = train_power - 4;
643
644 desired_gain = ar9003_get_desired_gain(ah, chain, train_power);
645
646 gain_index = 0;
647 for (i = 0; i < 32; i++) {
648 if (ah->paprd_gain_table_index[i] >= desired_gain)
649 break;
650 gain_index++;
651 }
652
653 ar9003_tx_force_gain(ah, gain_index);
654
655 REG_CLR_BIT(ah, AR_PHY_PAPRD_TRAINER_STAT1,
656 AR_PHY_PAPRD_TRAINER_STAT1_PAPRD_TRAIN_DONE);
657
658 return 0;
659 }
660 EXPORT_SYMBOL(ar9003_paprd_setup_gain_table);
661
662 int ar9003_paprd_create_curve(struct ath_hw *ah,
663 struct ath9k_hw_cal_data *caldata, int chain)
664 {
665 u16 *small_signal_gain = &caldata->small_signal_gain[chain];
666 u32 *pa_table = caldata->pa_table[chain];
667 u32 *data_L, *data_U;
668 int i, status = 0;
669 u32 *buf;
670 u32 reg;
671
672 memset(caldata->pa_table[chain], 0, sizeof(caldata->pa_table[chain]));
673
674 buf = kmalloc(2 * 48 * sizeof(u32), GFP_ATOMIC);
675 if (!buf)
676 return -ENOMEM;
677
678 data_L = &buf[0];
679 data_U = &buf[48];
680
681 REG_CLR_BIT(ah, AR_PHY_CHAN_INFO_MEMORY,
682 AR_PHY_CHAN_INFO_MEMORY_CHANINFOMEM_S2_READ);
683
684 reg = AR_PHY_CHAN_INFO_TAB_0;
685 for (i = 0; i < 48; i++)
686 data_L[i] = REG_READ(ah, reg + (i << 2));
687
688 REG_SET_BIT(ah, AR_PHY_CHAN_INFO_MEMORY,
689 AR_PHY_CHAN_INFO_MEMORY_CHANINFOMEM_S2_READ);
690
691 for (i = 0; i < 48; i++)
692 data_U[i] = REG_READ(ah, reg + (i << 2));
693
694 if (!create_pa_curve(data_L, data_U, pa_table, small_signal_gain))
695 status = -2;
696
697 REG_CLR_BIT(ah, AR_PHY_PAPRD_TRAINER_STAT1,
698 AR_PHY_PAPRD_TRAINER_STAT1_PAPRD_TRAIN_DONE);
699
700 kfree(buf);
701
702 return status;
703 }
704 EXPORT_SYMBOL(ar9003_paprd_create_curve);
705
706 int ar9003_paprd_init_table(struct ath_hw *ah)
707 {
708 ar9003_paprd_setup_single_table(ah);
709 ar9003_paprd_get_gain_table(ah);
710 return 0;
711 }
712 EXPORT_SYMBOL(ar9003_paprd_init_table);
713
714 bool ar9003_paprd_is_done(struct ath_hw *ah)
715 {
716 return !!REG_READ_FIELD(ah, AR_PHY_PAPRD_TRAINER_STAT1,
717 AR_PHY_PAPRD_TRAINER_STAT1_PAPRD_TRAIN_DONE);
718 }
719 EXPORT_SYMBOL(ar9003_paprd_is_done);
Tomato firmware and modifications.