2 * Copyright (c) 2010 Atheros Communications Inc.
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.
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.
18 #include "ar9003_phy.h"
20 void ar9003_paprd_enable(struct ath_hw
*ah
, bool val
)
22 struct ath_regulatory
*regulatory
= ath9k_hw_regulatory(ah
);
23 struct ath9k_channel
*chan
= ah
->curchan
;
26 ah
->paprd_table_write_done
= true;
28 ah
->eep_ops
->set_txpower(ah
, chan
,
29 ath9k_regd_get_ctl(regulatory
, chan
),
30 chan
->chan
->max_antenna_gain
* 2,
31 chan
->chan
->max_power
* 2,
32 min((u32
) MAX_RATE_POWER
,
33 (u32
) regulatory
->power_limit
), false);
36 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_CTRL0_B0
,
37 AR_PHY_PAPRD_CTRL0_PAPRD_ENABLE
, !!val
);
38 if (ah
->caps
.tx_chainmask
& BIT(1))
39 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_CTRL0_B1
,
40 AR_PHY_PAPRD_CTRL0_PAPRD_ENABLE
, !!val
);
41 if (ah
->caps
.tx_chainmask
& BIT(2))
42 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_CTRL0_B2
,
43 AR_PHY_PAPRD_CTRL0_PAPRD_ENABLE
, !!val
);
45 EXPORT_SYMBOL(ar9003_paprd_enable
);
47 static int ar9003_get_training_power_2g(struct ath_hw
*ah
)
49 struct ar9300_eeprom
*eep
= &ah
->eeprom
.ar9300_eep
;
50 struct ar9300_modal_eep_header
*hdr
= &eep
->modalHeader2G
;
51 unsigned int power
, scale
, delta
;
53 scale
= MS(le32_to_cpu(hdr
->papdRateMaskHt20
), AR9300_PAPRD_SCALE_1
);
54 power
= REG_READ_FIELD(ah
, AR_PHY_POWERTX_RATE5
,
55 AR_PHY_POWERTX_RATE5_POWERTXHT20_0
);
57 delta
= abs((int) ah
->paprd_target_power
- (int) power
);
67 static int ar9003_get_training_power_5g(struct ath_hw
*ah
)
69 struct ath_common
*common
= ath9k_hw_common(ah
);
70 struct ar9300_eeprom
*eep
= &ah
->eeprom
.ar9300_eep
;
71 struct ar9300_modal_eep_header
*hdr
= &eep
->modalHeader5G
;
72 struct ath9k_channel
*chan
= ah
->curchan
;
73 unsigned int power
, scale
, delta
;
75 if (chan
->channel
>= 5700)
76 scale
= MS(le32_to_cpu(hdr
->papdRateMaskHt20
),
77 AR9300_PAPRD_SCALE_1
);
78 else if (chan
->channel
>= 5400)
79 scale
= MS(le32_to_cpu(hdr
->papdRateMaskHt40
),
80 AR9300_PAPRD_SCALE_2
);
82 scale
= MS(le32_to_cpu(hdr
->papdRateMaskHt40
),
83 AR9300_PAPRD_SCALE_1
);
85 if (IS_CHAN_HT40(chan
))
86 power
= REG_READ_FIELD(ah
, AR_PHY_POWERTX_RATE8
,
87 AR_PHY_POWERTX_RATE8_POWERTXHT40_5
);
89 power
= REG_READ_FIELD(ah
, AR_PHY_POWERTX_RATE6
,
90 AR_PHY_POWERTX_RATE6_POWERTXHT20_5
);
93 delta
= abs((int) ah
->paprd_target_power
- (int) power
);
97 power
+= 2 * get_streams(common
->tx_chainmask
);
101 static int ar9003_paprd_setup_single_table(struct ath_hw
*ah
)
103 struct ath_common
*common
= ath9k_hw_common(ah
);
104 static const u32 ctrl0
[3] = {
105 AR_PHY_PAPRD_CTRL0_B0
,
106 AR_PHY_PAPRD_CTRL0_B1
,
107 AR_PHY_PAPRD_CTRL0_B2
109 static const u32 ctrl1
[3] = {
110 AR_PHY_PAPRD_CTRL1_B0
,
111 AR_PHY_PAPRD_CTRL1_B1
,
112 AR_PHY_PAPRD_CTRL1_B2
117 if (IS_CHAN_2GHZ(ah
->curchan
))
118 training_power
= ar9003_get_training_power_2g(ah
);
120 training_power
= ar9003_get_training_power_5g(ah
);
122 if (training_power
< 0) {
123 ath_dbg(common
, ATH_DBG_CALIBRATE
,
124 "PAPRD target power delta out of range");
127 ah
->paprd_training_power
= training_power
;
128 ath_dbg(common
, ATH_DBG_CALIBRATE
,
129 "Training power: %d, Target power: %d\n",
130 ah
->paprd_training_power
, ah
->paprd_target_power
);
132 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_AM2AM
, AR_PHY_PAPRD_AM2AM_MASK
,
134 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_AM2PM
, AR_PHY_PAPRD_AM2PM_MASK
,
136 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_HT40
, AR_PHY_PAPRD_HT40_MASK
,
137 ah
->paprd_ratemask_ht40
);
139 for (i
= 0; i
< ah
->caps
.max_txchains
; i
++) {
140 REG_RMW_FIELD(ah
, ctrl0
[i
],
141 AR_PHY_PAPRD_CTRL0_USE_SINGLE_TABLE_MASK
, 1);
142 REG_RMW_FIELD(ah
, ctrl1
[i
],
143 AR_PHY_PAPRD_CTRL1_ADAPTIVE_AM2PM_ENABLE
, 1);
144 REG_RMW_FIELD(ah
, ctrl1
[i
],
145 AR_PHY_PAPRD_CTRL1_ADAPTIVE_AM2AM_ENABLE
, 1);
146 REG_RMW_FIELD(ah
, ctrl1
[i
],
147 AR_PHY_PAPRD_CTRL1_ADAPTIVE_SCALING_ENA
, 0);
148 REG_RMW_FIELD(ah
, ctrl1
[i
],
149 AR_PHY_PAPRD_CTRL1_PA_GAIN_SCALE_FACT_MASK
, 181);
150 REG_RMW_FIELD(ah
, ctrl1
[i
],
151 AR_PHY_PAPRD_CTRL1_PAPRD_MAG_SCALE_FACT
, 361);
152 REG_RMW_FIELD(ah
, ctrl1
[i
],
153 AR_PHY_PAPRD_CTRL1_ADAPTIVE_SCALING_ENA
, 0);
154 REG_RMW_FIELD(ah
, ctrl0
[i
],
155 AR_PHY_PAPRD_CTRL0_PAPRD_MAG_THRSH
, 3);
158 ar9003_paprd_enable(ah
, false);
160 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_TRAINER_CNTL1
,
161 AR_PHY_PAPRD_TRAINER_CNTL1_CF_PAPRD_LB_SKIP
, 0x30);
162 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_TRAINER_CNTL1
,
163 AR_PHY_PAPRD_TRAINER_CNTL1_CF_PAPRD_LB_ENABLE
, 1);
164 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_TRAINER_CNTL1
,
165 AR_PHY_PAPRD_TRAINER_CNTL1_CF_PAPRD_TX_GAIN_FORCE
, 1);
166 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_TRAINER_CNTL1
,
167 AR_PHY_PAPRD_TRAINER_CNTL1_CF_PAPRD_RX_BB_GAIN_FORCE
, 0);
168 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_TRAINER_CNTL1
,
169 AR_PHY_PAPRD_TRAINER_CNTL1_CF_PAPRD_IQCORR_ENABLE
, 0);
170 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_TRAINER_CNTL1
,
171 AR_PHY_PAPRD_TRAINER_CNTL1_CF_PAPRD_AGC2_SETTLING
, 28);
172 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_TRAINER_CNTL1
,
173 AR_PHY_PAPRD_TRAINER_CNTL1_CF_CF_PAPRD_TRAIN_ENABLE
, 1);
174 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_TRAINER_CNTL2
,
175 AR_PHY_PAPRD_TRAINER_CNTL2_CF_PAPRD_INIT_RX_BB_GAIN
, 147);
176 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_TRAINER_CNTL3
,
177 AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_FINE_CORR_LEN
, 4);
178 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_TRAINER_CNTL3
,
179 AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_COARSE_CORR_LEN
, 4);
180 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_TRAINER_CNTL3
,
181 AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_NUM_CORR_STAGES
, 7);
182 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_TRAINER_CNTL3
,
183 AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_MIN_LOOPBACK_DEL
, 1);
184 if (AR_SREV_9485(ah
))
185 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_TRAINER_CNTL3
,
186 AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_QUICK_DROP
,
189 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_TRAINER_CNTL3
,
190 AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_QUICK_DROP
,
192 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_TRAINER_CNTL3
,
193 AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_ADC_DESIRED_SIZE
,
195 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_TRAINER_CNTL3
,
196 AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_BBTXMIX_DISABLE
, 1);
197 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_TRAINER_CNTL4
,
198 AR_PHY_PAPRD_TRAINER_CNTL4_CF_PAPRD_SAFETY_DELTA
, 0);
199 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_TRAINER_CNTL4
,
200 AR_PHY_PAPRD_TRAINER_CNTL4_CF_PAPRD_MIN_CORR
, 400);
201 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_TRAINER_CNTL4
,
202 AR_PHY_PAPRD_TRAINER_CNTL4_CF_PAPRD_NUM_TRAIN_SAMPLES
,
204 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_PRE_POST_SCALE_0_B0
,
205 AR_PHY_PAPRD_PRE_POST_SCALING
, 261376);
206 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_PRE_POST_SCALE_1_B0
,
207 AR_PHY_PAPRD_PRE_POST_SCALING
, 248079);
208 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_PRE_POST_SCALE_2_B0
,
209 AR_PHY_PAPRD_PRE_POST_SCALING
, 233759);
210 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_PRE_POST_SCALE_3_B0
,
211 AR_PHY_PAPRD_PRE_POST_SCALING
, 220464);
212 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_PRE_POST_SCALE_4_B0
,
213 AR_PHY_PAPRD_PRE_POST_SCALING
, 208194);
214 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_PRE_POST_SCALE_5_B0
,
215 AR_PHY_PAPRD_PRE_POST_SCALING
, 196949);
216 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_PRE_POST_SCALE_6_B0
,
217 AR_PHY_PAPRD_PRE_POST_SCALING
, 185706);
218 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_PRE_POST_SCALE_7_B0
,
219 AR_PHY_PAPRD_PRE_POST_SCALING
, 175487);
223 static void ar9003_paprd_get_gain_table(struct ath_hw
*ah
)
225 u32
*entry
= ah
->paprd_gain_table_entries
;
226 u8
*index
= ah
->paprd_gain_table_index
;
227 u32 reg
= AR_PHY_TXGAIN_TABLE
;
230 memset(entry
, 0, sizeof(ah
->paprd_gain_table_entries
));
231 memset(index
, 0, sizeof(ah
->paprd_gain_table_index
));
233 for (i
= 0; i
< 32; i
++) {
234 entry
[i
] = REG_READ(ah
, reg
);
235 index
[i
] = (entry
[i
] >> 24) & 0xff;
240 static unsigned int ar9003_get_desired_gain(struct ath_hw
*ah
, int chain
,
243 int olpc_gain_delta
= 0;
244 int alpha_therm
, alpha_volt
;
245 int therm_cal_value
, volt_cal_value
;
246 int therm_value
, volt_value
;
247 int thermal_gain_corr
, voltage_gain_corr
;
248 int desired_scale
, desired_gain
= 0;
251 REG_CLR_BIT(ah
, AR_PHY_PAPRD_TRAINER_STAT1
,
252 AR_PHY_PAPRD_TRAINER_STAT1_PAPRD_TRAIN_DONE
);
253 desired_scale
= REG_READ_FIELD(ah
, AR_PHY_TPC_12
,
254 AR_PHY_TPC_12_DESIRED_SCALE_HT40_5
);
255 alpha_therm
= REG_READ_FIELD(ah
, AR_PHY_TPC_19
,
256 AR_PHY_TPC_19_ALPHA_THERM
);
257 alpha_volt
= REG_READ_FIELD(ah
, AR_PHY_TPC_19
,
258 AR_PHY_TPC_19_ALPHA_VOLT
);
259 therm_cal_value
= REG_READ_FIELD(ah
, AR_PHY_TPC_18
,
260 AR_PHY_TPC_18_THERM_CAL_VALUE
);
261 volt_cal_value
= REG_READ_FIELD(ah
, AR_PHY_TPC_18
,
262 AR_PHY_TPC_18_VOLT_CAL_VALUE
);
263 therm_value
= REG_READ_FIELD(ah
, AR_PHY_BB_THERM_ADC_4
,
264 AR_PHY_BB_THERM_ADC_4_LATEST_THERM_VALUE
);
265 volt_value
= REG_READ_FIELD(ah
, AR_PHY_BB_THERM_ADC_4
,
266 AR_PHY_BB_THERM_ADC_4_LATEST_VOLT_VALUE
);
269 reg
= AR_PHY_TPC_11_B0
;
271 reg
= AR_PHY_TPC_11_B1
;
273 reg
= AR_PHY_TPC_11_B2
;
275 olpc_gain_delta
= REG_READ_FIELD(ah
, reg
,
276 AR_PHY_TPC_11_OLPC_GAIN_DELTA
);
278 if (olpc_gain_delta
>= 128)
279 olpc_gain_delta
= olpc_gain_delta
- 256;
281 thermal_gain_corr
= (alpha_therm
* (therm_value
- therm_cal_value
) +
283 voltage_gain_corr
= (alpha_volt
* (volt_value
- volt_cal_value
) +
285 desired_gain
= target_power
- olpc_gain_delta
- thermal_gain_corr
-
286 voltage_gain_corr
+ desired_scale
;
291 static void ar9003_tx_force_gain(struct ath_hw
*ah
, unsigned int gain_index
)
293 int selected_gain_entry
, txbb1dbgain
, txbb6dbgain
, txmxrgain
;
294 int padrvgnA
, padrvgnB
, padrvgnC
, padrvgnD
;
295 u32
*gain_table_entries
= ah
->paprd_gain_table_entries
;
297 selected_gain_entry
= gain_table_entries
[gain_index
];
298 txbb1dbgain
= selected_gain_entry
& 0x7;
299 txbb6dbgain
= (selected_gain_entry
>> 3) & 0x3;
300 txmxrgain
= (selected_gain_entry
>> 5) & 0xf;
301 padrvgnA
= (selected_gain_entry
>> 9) & 0xf;
302 padrvgnB
= (selected_gain_entry
>> 13) & 0xf;
303 padrvgnC
= (selected_gain_entry
>> 17) & 0xf;
304 padrvgnD
= (selected_gain_entry
>> 21) & 0x3;
306 REG_RMW_FIELD(ah
, AR_PHY_TX_FORCED_GAIN
,
307 AR_PHY_TX_FORCED_GAIN_FORCED_TXBB1DBGAIN
, txbb1dbgain
);
308 REG_RMW_FIELD(ah
, AR_PHY_TX_FORCED_GAIN
,
309 AR_PHY_TX_FORCED_GAIN_FORCED_TXBB6DBGAIN
, txbb6dbgain
);
310 REG_RMW_FIELD(ah
, AR_PHY_TX_FORCED_GAIN
,
311 AR_PHY_TX_FORCED_GAIN_FORCED_TXMXRGAIN
, txmxrgain
);
312 REG_RMW_FIELD(ah
, AR_PHY_TX_FORCED_GAIN
,
313 AR_PHY_TX_FORCED_GAIN_FORCED_PADRVGNA
, padrvgnA
);
314 REG_RMW_FIELD(ah
, AR_PHY_TX_FORCED_GAIN
,
315 AR_PHY_TX_FORCED_GAIN_FORCED_PADRVGNB
, padrvgnB
);
316 REG_RMW_FIELD(ah
, AR_PHY_TX_FORCED_GAIN
,
317 AR_PHY_TX_FORCED_GAIN_FORCED_PADRVGNC
, padrvgnC
);
318 REG_RMW_FIELD(ah
, AR_PHY_TX_FORCED_GAIN
,
319 AR_PHY_TX_FORCED_GAIN_FORCED_PADRVGND
, padrvgnD
);
320 REG_RMW_FIELD(ah
, AR_PHY_TX_FORCED_GAIN
,
321 AR_PHY_TX_FORCED_GAIN_FORCED_ENABLE_PAL
, 0);
322 REG_RMW_FIELD(ah
, AR_PHY_TX_FORCED_GAIN
,
323 AR_PHY_TX_FORCED_GAIN_FORCE_TX_GAIN
, 0);
324 REG_RMW_FIELD(ah
, AR_PHY_TPC_1
, AR_PHY_TPC_1_FORCED_DAC_GAIN
, 0);
325 REG_RMW_FIELD(ah
, AR_PHY_TPC_1
, AR_PHY_TPC_1_FORCE_DAC_GAIN
, 0);
328 static inline int find_expn(int num
)
333 static inline int find_proper_scale(int expn
, int N
)
335 return (expn
> N
) ? expn
- 10 : 0;
340 static bool create_pa_curve(u32
*data_L
, u32
*data_U
, u32
*pa_table
, u16
*gain
)
342 unsigned int thresh_accum_cnt
;
343 int x_est
[NUM_BIN
+ 1], Y
[NUM_BIN
+ 1], theta
[NUM_BIN
+ 1];
344 int PA_in
[NUM_BIN
+ 1];
345 int B1_tmp
[NUM_BIN
+ 1], B2_tmp
[NUM_BIN
+ 1];
346 unsigned int B1_abs_max
, B2_abs_max
;
347 int max_index
, scale_factor
;
348 int y_est
[NUM_BIN
+ 1];
349 int x_est_fxp1_nonlin
, x_tilde
[NUM_BIN
+ 1];
350 unsigned int x_tilde_abs
;
351 int G_fxp
, Y_intercept
, order_x_by_y
, M
, I
, L
, sum_y_sqr
, sum_y_quad
;
352 int Q_x
, Q_B1
, Q_B2
, beta_raw
, alpha_raw
, scale_B
;
353 int Q_scale_B
, Q_beta
, Q_alpha
, alpha
, beta
, order_1
, order_2
;
354 int order1_5x
, order2_3x
, order1_5x_rem
, order2_3x_rem
;
356 int theta_low_bin
= 0;
359 /* disregard any bin that contains <= 16 samples */
360 thresh_accum_cnt
= 16;
363 memset(theta
, 0, sizeof(theta
));
364 memset(x_est
, 0, sizeof(x_est
));
365 memset(Y
, 0, sizeof(Y
));
366 memset(y_est
, 0, sizeof(y_est
));
367 memset(x_tilde
, 0, sizeof(x_tilde
));
369 for (i
= 0; i
< NUM_BIN
; i
++) {
370 s32 accum_cnt
, accum_tx
, accum_rx
, accum_ang
;
372 /* number of samples */
373 accum_cnt
= data_L
[i
] & 0xffff;
375 if (accum_cnt
<= thresh_accum_cnt
)
378 /* sum(tx amplitude) */
379 accum_tx
= ((data_L
[i
] >> 16) & 0xffff) |
380 ((data_U
[i
] & 0x7ff) << 16);
382 /* sum(rx amplitude distance to lower bin edge) */
383 accum_rx
= ((data_U
[i
] >> 11) & 0x1f) |
384 ((data_L
[i
+ 23] & 0xffff) << 5);
387 accum_ang
= ((data_L
[i
+ 23] >> 16) & 0xffff) |
388 ((data_U
[i
+ 23] & 0x7ff) << 16);
390 accum_tx
<<= scale_factor
;
391 accum_rx
<<= scale_factor
;
392 x_est
[i
+ 1] = (((accum_tx
+ accum_cnt
) / accum_cnt
) + 32) >>
395 Y
[i
+ 1] = ((((accum_rx
+ accum_cnt
) / accum_cnt
) + 32) >>
397 (1 << scale_factor
) * max_index
+ 16;
399 if (accum_ang
>= (1 << 26))
400 accum_ang
-= 1 << 27;
402 theta
[i
+ 1] = ((accum_ang
* (1 << scale_factor
)) + accum_cnt
) /
409 * Find average theta of first 5 bin and all of those to same value.
410 * Curve is linear at that range.
412 for (i
= 1; i
< 6; i
++)
413 theta_low_bin
+= theta
[i
];
415 theta_low_bin
= theta_low_bin
/ 5;
416 for (i
= 1; i
< 6; i
++)
417 theta
[i
] = theta_low_bin
;
419 /* Set values at origin */
420 theta
[0] = theta_low_bin
;
421 for (i
= 0; i
<= max_index
; i
++)
422 theta
[i
] -= theta_low_bin
;
428 /* low signal gain */
429 if (x_est
[6] == x_est
[3])
433 (((Y
[6] - Y
[3]) * 1 << scale_factor
) +
434 (x_est
[6] - x_est
[3])) / (x_est
[6] - x_est
[3]);
436 /* prevent division by zero */
441 (G_fxp
* (x_est
[0] - x_est
[3]) +
442 (1 << scale_factor
)) / (1 << scale_factor
) + Y
[3];
444 for (i
= 0; i
<= max_index
; i
++)
445 y_est
[i
] = Y
[i
] - Y_intercept
;
447 for (i
= 0; i
<= 3; i
++) {
449 x_est
[i
] = ((y_est
[i
] * 1 << scale_factor
) + G_fxp
) / G_fxp
;
452 if (y_est
[max_index
] == 0)
456 x_est
[max_index
] - ((1 << scale_factor
) * y_est
[max_index
] +
460 (x_est_fxp1_nonlin
+ y_est
[max_index
]) / y_est
[max_index
];
462 if (order_x_by_y
== 0)
464 else if (order_x_by_y
== 1)
469 I
= (max_index
> 15) ? 7 : max_index
>> 1;
476 for (i
= 0; i
<= L
; i
++) {
479 unsigned int tmp_abs
;
481 /* prevent division by zero */
482 if (y_est
[i
+ I
] == 0)
486 x_est
[i
+ I
] - ((1 << scale_factor
) * y_est
[i
+ I
] +
490 (x_est_fxp1_nonlin
* (1 << M
) + y_est
[i
+ I
]) / y_est
[i
+
493 (x_tilde
[i
] * (1 << M
) + y_est
[i
+ I
]) / y_est
[i
+ I
];
495 (x_tilde
[i
] * (1 << M
) + y_est
[i
+ I
]) / y_est
[i
+ I
];
497 (y_est
[i
+ I
] * y_est
[i
+ I
] +
498 (scale_factor
* scale_factor
)) / (scale_factor
*
500 tmp_abs
= abs(x_tilde
[i
]);
501 if (tmp_abs
> x_tilde_abs
)
502 x_tilde_abs
= tmp_abs
;
504 y_quad
= y_sqr
* y_sqr
;
505 sum_y_sqr
= sum_y_sqr
+ y_sqr
;
506 sum_y_quad
= sum_y_quad
+ y_quad
;
507 B1_tmp
[i
] = y_sqr
* (L
+ 1);
513 for (i
= 0; i
<= L
; i
++) {
516 B1_tmp
[i
] -= sum_y_sqr
;
517 B2_tmp
[i
] = sum_y_quad
- sum_y_sqr
* B2_tmp
[i
];
519 abs_val
= abs(B1_tmp
[i
]);
520 if (abs_val
> B1_abs_max
)
521 B1_abs_max
= abs_val
;
523 abs_val
= abs(B2_tmp
[i
]);
524 if (abs_val
> B2_abs_max
)
525 B2_abs_max
= abs_val
;
528 Q_x
= find_proper_scale(find_expn(x_tilde_abs
), 10);
529 Q_B1
= find_proper_scale(find_expn(B1_abs_max
), 10);
530 Q_B2
= find_proper_scale(find_expn(B2_abs_max
), 10);
534 for (i
= 0; i
<= L
; i
++) {
535 x_tilde
[i
] = x_tilde
[i
] / (1 << Q_x
);
536 B1_tmp
[i
] = B1_tmp
[i
] / (1 << Q_B1
);
537 B2_tmp
[i
] = B2_tmp
[i
] / (1 << Q_B2
);
538 beta_raw
= beta_raw
+ B1_tmp
[i
] * x_tilde
[i
];
539 alpha_raw
= alpha_raw
+ B2_tmp
[i
] * x_tilde
[i
];
543 ((sum_y_quad
/ scale_factor
) * (L
+ 1) -
544 (sum_y_sqr
/ scale_factor
) * sum_y_sqr
) * scale_factor
;
546 Q_scale_B
= find_proper_scale(find_expn(abs(scale_B
)), 10);
547 scale_B
= scale_B
/ (1 << Q_scale_B
);
550 Q_beta
= find_proper_scale(find_expn(abs(beta_raw
)), 10);
551 Q_alpha
= find_proper_scale(find_expn(abs(alpha_raw
)), 10);
552 beta_raw
= beta_raw
/ (1 << Q_beta
);
553 alpha_raw
= alpha_raw
/ (1 << Q_alpha
);
554 alpha
= (alpha_raw
<< 10) / scale_B
;
555 beta
= (beta_raw
<< 10) / scale_B
;
556 order_1
= 3 * M
- Q_x
- Q_B1
- Q_beta
+ 10 + Q_scale_B
;
557 order_2
= 3 * M
- Q_x
- Q_B2
- Q_alpha
+ 10 + Q_scale_B
;
558 order1_5x
= order_1
/ 5;
559 order2_3x
= order_2
/ 3;
560 order1_5x_rem
= order_1
- 5 * order1_5x
;
561 order2_3x_rem
= order_2
- 3 * order2_3x
;
563 for (i
= 0; i
< PAPRD_TABLE_SZ
; i
++) {
565 y5
= ((beta
* tmp
) >> 6) >> order1_5x
;
566 y5
= (y5
* tmp
) >> order1_5x
;
567 y5
= (y5
* tmp
) >> order1_5x
;
568 y5
= (y5
* tmp
) >> order1_5x
;
569 y5
= (y5
* tmp
) >> order1_5x
;
570 y5
= y5
>> order1_5x_rem
;
571 y3
= (alpha
* tmp
) >> order2_3x
;
572 y3
= (y3
* tmp
) >> order2_3x
;
573 y3
= (y3
* tmp
) >> order2_3x
;
574 y3
= y3
>> order2_3x_rem
;
575 PA_in
[i
] = y5
+ y3
+ (256 * tmp
) / G_fxp
;
578 tmp
= PA_in
[i
] - PA_in
[i
- 1];
581 PA_in
[i
- 1] + (PA_in
[i
- 1] -
585 PA_in
[i
] = (PA_in
[i
] < 1400) ? PA_in
[i
] : 1400;
591 for (i
= 0; i
<= L
; i
++) {
593 ((theta
[i
+ I
] << M
) + y_est
[i
+ I
]) / y_est
[i
+ I
];
595 ((theta_tilde
<< M
) + y_est
[i
+ I
]) / y_est
[i
+ I
];
597 ((theta_tilde
<< M
) + y_est
[i
+ I
]) / y_est
[i
+ I
];
598 beta_raw
= beta_raw
+ B1_tmp
[i
] * theta_tilde
;
599 alpha_raw
= alpha_raw
+ B2_tmp
[i
] * theta_tilde
;
602 Q_beta
= find_proper_scale(find_expn(abs(beta_raw
)), 10);
603 Q_alpha
= find_proper_scale(find_expn(abs(alpha_raw
)), 10);
604 beta_raw
= beta_raw
/ (1 << Q_beta
);
605 alpha_raw
= alpha_raw
/ (1 << Q_alpha
);
607 alpha
= (alpha_raw
<< 10) / scale_B
;
608 beta
= (beta_raw
<< 10) / scale_B
;
609 order_1
= 3 * M
- Q_x
- Q_B1
- Q_beta
+ 10 + Q_scale_B
+ 5;
610 order_2
= 3 * M
- Q_x
- Q_B2
- Q_alpha
+ 10 + Q_scale_B
+ 5;
611 order1_5x
= order_1
/ 5;
612 order2_3x
= order_2
/ 3;
613 order1_5x_rem
= order_1
- 5 * order1_5x
;
614 order2_3x_rem
= order_2
- 3 * order2_3x
;
616 for (i
= 0; i
< PAPRD_TABLE_SZ
; i
++) {
619 /* pa_table[4] is calculated from PA_angle for i=5 */
625 y5
= (((beta
* tmp
- 64) >> 6) -
626 (1 << order1_5x
)) / (1 << order1_5x
);
628 y5
= ((((beta
* tmp
- 64) >> 6) +
629 (1 << order1_5x
)) / (1 << order1_5x
));
631 y5
= (y5
* tmp
) / (1 << order1_5x
);
632 y5
= (y5
* tmp
) / (1 << order1_5x
);
633 y5
= (y5
* tmp
) / (1 << order1_5x
);
634 y5
= (y5
* tmp
) / (1 << order1_5x
);
635 y5
= y5
/ (1 << order1_5x_rem
);
639 (1 << order2_3x
)) / (1 << order2_3x
);
642 (1 << order2_3x
)) / (1 << order2_3x
);
643 y3
= (y3
* tmp
) / (1 << order2_3x
);
644 y3
= (y3
* tmp
) / (1 << order2_3x
);
645 y3
= y3
/ (1 << order2_3x_rem
);
653 else if (PA_angle
> 150)
657 pa_table
[i
] = ((PA_in
[i
] & 0x7ff) << 11) + (PA_angle
& 0x7ff);
659 PA_angle
= (PA_angle
+ 2) >> 1;
660 pa_table
[i
- 1] = ((PA_in
[i
- 1] & 0x7ff) << 11) +
669 void ar9003_paprd_populate_single_table(struct ath_hw
*ah
,
670 struct ath9k_hw_cal_data
*caldata
,
673 u32
*paprd_table_val
= caldata
->pa_table
[chain
];
674 u32 small_signal_gain
= caldata
->small_signal_gain
[chain
];
675 u32 training_power
= ah
->paprd_training_power
;
680 reg
= AR_PHY_PAPRD_MEM_TAB_B0
;
682 reg
= AR_PHY_PAPRD_MEM_TAB_B1
;
684 reg
= AR_PHY_PAPRD_MEM_TAB_B2
;
686 for (i
= 0; i
< PAPRD_TABLE_SZ
; i
++) {
687 REG_WRITE(ah
, reg
, paprd_table_val
[i
]);
692 reg
= AR_PHY_PA_GAIN123_B0
;
694 reg
= AR_PHY_PA_GAIN123_B1
;
696 reg
= AR_PHY_PA_GAIN123_B2
;
698 REG_RMW_FIELD(ah
, reg
, AR_PHY_PA_GAIN123_PA_GAIN1
, small_signal_gain
);
700 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_CTRL1_B0
,
701 AR_PHY_PAPRD_CTRL1_PAPRD_POWER_AT_AM2AM_CAL
,
704 if (ah
->caps
.tx_chainmask
& BIT(1))
705 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_CTRL1_B1
,
706 AR_PHY_PAPRD_CTRL1_PAPRD_POWER_AT_AM2AM_CAL
,
709 if (ah
->caps
.tx_chainmask
& BIT(2))
710 REG_RMW_FIELD(ah
, AR_PHY_PAPRD_CTRL1_B2
,
711 AR_PHY_PAPRD_CTRL1_PAPRD_POWER_AT_AM2AM_CAL
,
714 EXPORT_SYMBOL(ar9003_paprd_populate_single_table
);
716 int ar9003_paprd_setup_gain_table(struct ath_hw
*ah
, int chain
)
718 unsigned int i
, desired_gain
, gain_index
;
719 unsigned int train_power
= ah
->paprd_training_power
;
721 desired_gain
= ar9003_get_desired_gain(ah
, chain
, train_power
);
724 for (i
= 0; i
< 32; i
++) {
725 if (ah
->paprd_gain_table_index
[i
] >= desired_gain
)
730 ar9003_tx_force_gain(ah
, gain_index
);
732 REG_CLR_BIT(ah
, AR_PHY_PAPRD_TRAINER_STAT1
,
733 AR_PHY_PAPRD_TRAINER_STAT1_PAPRD_TRAIN_DONE
);
737 EXPORT_SYMBOL(ar9003_paprd_setup_gain_table
);
739 int ar9003_paprd_create_curve(struct ath_hw
*ah
,
740 struct ath9k_hw_cal_data
*caldata
, int chain
)
742 u16
*small_signal_gain
= &caldata
->small_signal_gain
[chain
];
743 u32
*pa_table
= caldata
->pa_table
[chain
];
744 u32
*data_L
, *data_U
;
749 memset(caldata
->pa_table
[chain
], 0, sizeof(caldata
->pa_table
[chain
]));
751 buf
= kmalloc(2 * 48 * sizeof(u32
), GFP_ATOMIC
);
758 REG_CLR_BIT(ah
, AR_PHY_CHAN_INFO_MEMORY
,
759 AR_PHY_CHAN_INFO_MEMORY_CHANINFOMEM_S2_READ
);
761 reg
= AR_PHY_CHAN_INFO_TAB_0
;
762 for (i
= 0; i
< 48; i
++)
763 data_L
[i
] = REG_READ(ah
, reg
+ (i
<< 2));
765 REG_SET_BIT(ah
, AR_PHY_CHAN_INFO_MEMORY
,
766 AR_PHY_CHAN_INFO_MEMORY_CHANINFOMEM_S2_READ
);
768 for (i
= 0; i
< 48; i
++)
769 data_U
[i
] = REG_READ(ah
, reg
+ (i
<< 2));
771 if (!create_pa_curve(data_L
, data_U
, pa_table
, small_signal_gain
))
774 REG_CLR_BIT(ah
, AR_PHY_PAPRD_TRAINER_STAT1
,
775 AR_PHY_PAPRD_TRAINER_STAT1_PAPRD_TRAIN_DONE
);
781 EXPORT_SYMBOL(ar9003_paprd_create_curve
);
783 int ar9003_paprd_init_table(struct ath_hw
*ah
)
787 ret
= ar9003_paprd_setup_single_table(ah
);
791 ar9003_paprd_get_gain_table(ah
);
794 EXPORT_SYMBOL(ar9003_paprd_init_table
);
796 bool ar9003_paprd_is_done(struct ath_hw
*ah
)
798 return !!REG_READ_FIELD(ah
, AR_PHY_PAPRD_TRAINER_STAT1
,
799 AR_PHY_PAPRD_TRAINER_STAT1_PAPRD_TRAIN_DONE
);
801 EXPORT_SYMBOL(ar9003_paprd_is_done
);