3 Broadcom B43 wireless driver
5 G PHY LO (LocalOscillator) Measuring and Control routines
7 Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
8 Copyright (c) 2005, 2006 Stefano Brivio <stefano.brivio@polimi.it>
9 Copyright (c) 2005-2007 Michael Buesch <mb@bu3sch.de>
10 Copyright (c) 2005, 2006 Danny van Dyk <kugelfang@gentoo.org>
11 Copyright (c) 2005, 2006 Andreas Jaggi <andreas.jaggi@waterwave.ch>
13 This program is free software; you can redistribute it and/or modify
14 it under the terms of the GNU General Public License as published by
15 the Free Software Foundation; either version 2 of the License, or
16 (at your option) any later version.
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 GNU General Public License for more details.
23 You should have received a copy of the GNU General Public License
24 along with this program; see the file COPYING. If not, write to
25 the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
26 Boston, MA 02110-1301, USA.
35 #include <linux/delay.h>
36 #include <linux/sched.h>
39 static struct b43_lo_calib * b43_find_lo_calib(struct b43_txpower_lo_control *lo,
40 const struct b43_bbatt *bbatt,
41 const struct b43_rfatt *rfatt)
43 struct b43_lo_calib *c;
45 list_for_each_entry(c, &lo->calib_list, list) {
46 if (!b43_compare_bbatt(&c->bbatt, bbatt))
48 if (!b43_compare_rfatt(&c->rfatt, rfatt))
56 /* Write the LocalOscillator Control (adjust) value-pair. */
57 static void b43_lo_write(struct b43_wldev *dev, struct b43_loctl *control)
59 struct b43_phy *phy = &dev->phy;
64 if (unlikely(abs(control->i) > 16 || abs(control->q) > 16)) {
65 b43dbg(dev->wl, "Invalid LO control pair "
66 "(I: %d, Q: %d)\n", control->i, control->q);
72 value = (u8) (control->q);
73 value |= ((u8) (control->i)) << 8;
75 reg = (phy->type == B43_PHYTYPE_B) ? 0x002F : B43_PHY_LO_CTL;
76 b43_phy_write(dev, reg, value);
79 static u16 lo_measure_feedthrough(struct b43_wldev *dev,
80 u16 lna, u16 pga, u16 trsw_rx)
82 struct b43_phy *phy = &dev->phy;
87 lna <<= B43_PHY_RFOVERVAL_LNA_SHIFT;
88 pga <<= B43_PHY_RFOVERVAL_PGA_SHIFT;
90 B43_WARN_ON(lna & ~B43_PHY_RFOVERVAL_LNA);
91 B43_WARN_ON(pga & ~B43_PHY_RFOVERVAL_PGA);
92 /*FIXME This assertion fails B43_WARN_ON(trsw_rx & ~(B43_PHY_RFOVERVAL_TRSWRX |
93 B43_PHY_RFOVERVAL_BW));
95 trsw_rx &= (B43_PHY_RFOVERVAL_TRSWRX | B43_PHY_RFOVERVAL_BW);
97 /* Construct the RF Override Value */
98 rfover = B43_PHY_RFOVERVAL_UNK;
102 if ((dev->dev->bus->sprom.boardflags_lo & B43_BFL_EXTLNA)
104 rfover |= B43_PHY_RFOVERVAL_EXTLNA;
106 b43_phy_write(dev, B43_PHY_PGACTL, 0xE300);
107 b43_phy_write(dev, B43_PHY_RFOVERVAL, rfover);
109 rfover |= B43_PHY_RFOVERVAL_BW_LBW;
110 b43_phy_write(dev, B43_PHY_RFOVERVAL, rfover);
112 rfover |= B43_PHY_RFOVERVAL_BW_LPF;
113 b43_phy_write(dev, B43_PHY_RFOVERVAL, rfover);
115 b43_phy_write(dev, B43_PHY_PGACTL, 0xF300);
117 pga |= B43_PHY_PGACTL_UNKNOWN;
118 b43_phy_write(dev, B43_PHY_PGACTL, pga);
120 pga |= B43_PHY_PGACTL_LOWBANDW;
121 b43_phy_write(dev, B43_PHY_PGACTL, pga);
123 pga |= B43_PHY_PGACTL_LPF;
124 b43_phy_write(dev, B43_PHY_PGACTL, pga);
127 feedthrough = b43_phy_read(dev, B43_PHY_LO_LEAKAGE);
129 /* This is a good place to check if we need to relax a bit,
130 * as this is the main function called regularly
131 * in the LO calibration. */
137 /* TXCTL Register and Value Table.
138 * Returns the "TXCTL Register".
139 * "value" is the "TXCTL Value".
140 * "pad_mix_gain" is the PAD Mixer Gain.
142 static u16 lo_txctl_register_table(struct b43_wldev *dev,
143 u16 * value, u16 * pad_mix_gain)
145 struct b43_phy *phy = &dev->phy;
148 if (phy->type == B43_PHYTYPE_B) {
150 if (phy->radio_rev <= 5) {
158 if (phy->rev >= 2 && phy->radio_rev == 8) {
171 *pad_mix_gain = padmix;
176 static void lo_measure_txctl_values(struct b43_wldev *dev)
178 struct b43_phy *phy = &dev->phy;
179 struct b43_txpower_lo_control *lo = phy->lo_control;
184 static const u8 tx_bias_values[] = {
185 0x09, 0x08, 0x0A, 0x01, 0x00,
186 0x02, 0x05, 0x04, 0x06,
188 static const u8 tx_magn_values[] = {
192 if (!has_loopback_gain(phy)) {
197 int lb_gain; /* Loopback gain (in dB) */
200 lb_gain = phy->max_lb_gain / 2;
203 pga = abs(10 - lb_gain) / 6;
204 pga = limit_value(pga, 0, 15);
211 if ((phy->rev >= 2) &&
212 (phy->radio_ver == 0x2050) && (phy->radio_rev == 8))
215 if ((10 - lb_gain) < cmp_val)
216 tmp = (10 - lb_gain);
224 radio_pctl_reg = cmp_val;
226 radio_pctl_reg = tmp;
229 b43_radio_write16(dev, 0x43, (b43_radio_read16(dev, 0x43)
230 & 0xFFF0) | radio_pctl_reg);
231 b43_phy_set_baseband_attenuation(dev, 2);
233 reg = lo_txctl_register_table(dev, &mask, NULL);
235 b43_radio_write16(dev, reg, b43_radio_read16(dev, reg)
238 if (has_tx_magnification(phy)) {
241 int min_feedth = 0xFFFF;
244 for (i = 0; i < ARRAY_SIZE(tx_magn_values); i++) {
245 tx_magn = tx_magn_values[i];
246 b43_radio_write16(dev, 0x52,
247 (b43_radio_read16(dev, 0x52)
248 & 0xFF0F) | tx_magn);
249 for (j = 0; j < ARRAY_SIZE(tx_bias_values); j++) {
250 tx_bias = tx_bias_values[j];
251 b43_radio_write16(dev, 0x52,
252 (b43_radio_read16(dev, 0x52)
253 & 0xFFF0) | tx_bias);
255 lo_measure_feedthrough(dev, 0, pga,
257 if (feedthrough < min_feedth) {
258 lo->tx_bias = tx_bias;
259 lo->tx_magn = tx_magn;
260 min_feedth = feedthrough;
262 if (lo->tx_bias == 0)
265 b43_radio_write16(dev, 0x52,
266 (b43_radio_read16(dev, 0x52)
267 & 0xFF00) | lo->tx_bias | lo->
273 b43_radio_write16(dev, 0x52, b43_radio_read16(dev, 0x52)
274 & 0xFFF0); /* TX bias == 0 */
276 lo->txctl_measured_time = jiffies;
279 static void lo_read_power_vector(struct b43_wldev *dev)
281 struct b43_phy *phy = &dev->phy;
282 struct b43_txpower_lo_control *lo = phy->lo_control;
285 u64 power_vector = 0;
287 for (i = 0; i < 8; i += 2) {
288 tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x310 + i);
289 power_vector |= (tmp << (i * 8));
290 /* Clear the vector on the device. */
291 b43_shm_write16(dev, B43_SHM_SHARED, 0x310 + i, 0);
294 lo->power_vector = power_vector;
295 lo->pwr_vec_read_time = jiffies;
298 /* 802.11/LO/GPHY/MeasuringGains */
299 static void lo_measure_gain_values(struct b43_wldev *dev,
300 s16 max_rx_gain, int use_trsw_rx)
302 struct b43_phy *phy = &dev->phy;
308 if (has_loopback_gain(phy)) {
313 trsw_rx_gain = phy->trsw_rx_gain / 2;
314 if (max_rx_gain >= trsw_rx_gain) {
315 trsw_rx_gain = max_rx_gain - trsw_rx_gain;
319 trsw_rx_gain = max_rx_gain;
320 if (trsw_rx_gain < 9) {
321 phy->lna_lod_gain = 0;
323 phy->lna_lod_gain = 1;
326 trsw_rx_gain = limit_value(trsw_rx_gain, 0, 0x2D);
327 phy->pga_gain = trsw_rx_gain / 3;
328 if (phy->pga_gain >= 5) {
335 phy->trsw_rx_gain = 0x20;
336 if (max_rx_gain >= 0x14) {
337 phy->lna_lod_gain = 1;
339 } else if (max_rx_gain >= 0x12) {
340 phy->lna_lod_gain = 1;
342 } else if (max_rx_gain >= 0xF) {
343 phy->lna_lod_gain = 1;
346 phy->lna_lod_gain = 0;
351 tmp = b43_radio_read16(dev, 0x7A);
352 if (phy->lna_lod_gain == 0)
356 b43_radio_write16(dev, 0x7A, tmp);
359 struct lo_g_saved_values {
369 u16 phy_dacctl_hwpctl;
372 u16 phy_hpwr_tssictl;
374 u16 phy_analogoverval;
386 /* Radio registers */
392 static void lo_measure_setup(struct b43_wldev *dev,
393 struct lo_g_saved_values *sav)
395 struct ssb_sprom *sprom = &dev->dev->bus->sprom;
396 struct b43_phy *phy = &dev->phy;
397 struct b43_txpower_lo_control *lo = phy->lo_control;
400 if (b43_has_hardware_pctl(phy)) {
401 sav->phy_lo_mask = b43_phy_read(dev, B43_PHY_LO_MASK);
402 sav->phy_extg_01 = b43_phy_read(dev, B43_PHY_EXTG(0x01));
403 sav->phy_dacctl_hwpctl = b43_phy_read(dev, B43_PHY_DACCTL);
404 sav->phy_cck_14 = b43_phy_read(dev, B43_PHY_CCK(0x14));
405 sav->phy_hpwr_tssictl = b43_phy_read(dev, B43_PHY_HPWR_TSSICTL);
407 b43_phy_write(dev, B43_PHY_HPWR_TSSICTL,
408 b43_phy_read(dev, B43_PHY_HPWR_TSSICTL)
410 b43_phy_write(dev, B43_PHY_EXTG(0x01),
411 b43_phy_read(dev, B43_PHY_EXTG(0x01))
413 b43_phy_write(dev, B43_PHY_DACCTL,
414 b43_phy_read(dev, B43_PHY_DACCTL)
416 b43_phy_write(dev, B43_PHY_CCK(0x14),
417 b43_phy_read(dev, B43_PHY_CCK(0x14))
420 if (phy->type == B43_PHYTYPE_B &&
421 phy->radio_ver == 0x2050 && phy->radio_rev < 6) {
422 b43_phy_write(dev, B43_PHY_CCK(0x16), 0x410);
423 b43_phy_write(dev, B43_PHY_CCK(0x17), 0x820);
426 sav->phy_analogover = b43_phy_read(dev, B43_PHY_ANALOGOVER);
427 sav->phy_analogoverval =
428 b43_phy_read(dev, B43_PHY_ANALOGOVERVAL);
429 sav->phy_rfover = b43_phy_read(dev, B43_PHY_RFOVER);
430 sav->phy_rfoverval = b43_phy_read(dev, B43_PHY_RFOVERVAL);
431 sav->phy_classctl = b43_phy_read(dev, B43_PHY_CLASSCTL);
432 sav->phy_cck_3E = b43_phy_read(dev, B43_PHY_CCK(0x3E));
433 sav->phy_crs0 = b43_phy_read(dev, B43_PHY_CRS0);
435 b43_phy_write(dev, B43_PHY_CLASSCTL,
436 b43_phy_read(dev, B43_PHY_CLASSCTL)
438 b43_phy_write(dev, B43_PHY_CRS0, b43_phy_read(dev, B43_PHY_CRS0)
440 b43_phy_write(dev, B43_PHY_ANALOGOVER,
441 b43_phy_read(dev, B43_PHY_ANALOGOVER)
443 b43_phy_write(dev, B43_PHY_ANALOGOVERVAL,
444 b43_phy_read(dev, B43_PHY_ANALOGOVERVAL)
446 if (phy->type == B43_PHYTYPE_G) {
447 if ((phy->rev >= 7) &&
448 (sprom->boardflags_lo & B43_BFL_EXTLNA)) {
449 b43_phy_write(dev, B43_PHY_RFOVER, 0x933);
451 b43_phy_write(dev, B43_PHY_RFOVER, 0x133);
454 b43_phy_write(dev, B43_PHY_RFOVER, 0);
456 b43_phy_write(dev, B43_PHY_CCK(0x3E), 0);
458 sav->reg_3F4 = b43_read16(dev, 0x3F4);
459 sav->reg_3E2 = b43_read16(dev, 0x3E2);
460 sav->radio_43 = b43_radio_read16(dev, 0x43);
461 sav->radio_7A = b43_radio_read16(dev, 0x7A);
462 sav->phy_pgactl = b43_phy_read(dev, B43_PHY_PGACTL);
463 sav->phy_cck_2A = b43_phy_read(dev, B43_PHY_CCK(0x2A));
464 sav->phy_syncctl = b43_phy_read(dev, B43_PHY_SYNCCTL);
465 sav->phy_dacctl = b43_phy_read(dev, B43_PHY_DACCTL);
467 if (!has_tx_magnification(phy)) {
468 sav->radio_52 = b43_radio_read16(dev, 0x52);
469 sav->radio_52 &= 0x00F0;
471 if (phy->type == B43_PHYTYPE_B) {
472 sav->phy_cck_30 = b43_phy_read(dev, B43_PHY_CCK(0x30));
473 sav->phy_cck_06 = b43_phy_read(dev, B43_PHY_CCK(0x06));
474 b43_phy_write(dev, B43_PHY_CCK(0x30), 0x00FF);
475 b43_phy_write(dev, B43_PHY_CCK(0x06), 0x3F3F);
477 b43_write16(dev, 0x3E2, b43_read16(dev, 0x3E2)
480 b43_write16(dev, 0x3F4, b43_read16(dev, 0x3F4)
484 (phy->type == B43_PHYTYPE_G) ? B43_PHY_LO_MASK : B43_PHY_CCK(0x2E);
485 b43_phy_write(dev, tmp, 0x007F);
487 tmp = sav->phy_syncctl;
488 b43_phy_write(dev, B43_PHY_SYNCCTL, tmp & 0xFF7F);
490 b43_radio_write16(dev, 0x007A, tmp & 0xFFF0);
492 b43_phy_write(dev, B43_PHY_CCK(0x2A), 0x8A3);
493 if (phy->type == B43_PHYTYPE_G ||
494 (phy->type == B43_PHYTYPE_B &&
495 phy->radio_ver == 0x2050 && phy->radio_rev >= 6)) {
496 b43_phy_write(dev, B43_PHY_CCK(0x2B), 0x1003);
498 b43_phy_write(dev, B43_PHY_CCK(0x2B), 0x0802);
500 b43_dummy_transmission(dev);
501 b43_radio_selectchannel(dev, 6, 0);
502 b43_radio_read16(dev, 0x51); /* dummy read */
503 if (phy->type == B43_PHYTYPE_G)
504 b43_phy_write(dev, B43_PHY_CCK(0x2F), 0);
506 /* Re-measure the txctl values, if needed. */
507 if (time_before(lo->txctl_measured_time,
508 jiffies - B43_LO_TXCTL_EXPIRE))
509 lo_measure_txctl_values(dev);
511 if (phy->type == B43_PHYTYPE_G && phy->rev >= 3) {
512 b43_phy_write(dev, B43_PHY_LO_MASK, 0xC078);
514 if (phy->type == B43_PHYTYPE_B)
515 b43_phy_write(dev, B43_PHY_CCK(0x2E), 0x8078);
517 b43_phy_write(dev, B43_PHY_LO_MASK, 0x8078);
521 static void lo_measure_restore(struct b43_wldev *dev,
522 struct lo_g_saved_values *sav)
524 struct b43_phy *phy = &dev->phy;
528 b43_phy_write(dev, B43_PHY_PGACTL, 0xE300);
529 tmp = (phy->pga_gain << 8);
530 b43_phy_write(dev, B43_PHY_RFOVERVAL, tmp | 0xA0);
532 b43_phy_write(dev, B43_PHY_RFOVERVAL, tmp | 0xA2);
534 b43_phy_write(dev, B43_PHY_RFOVERVAL, tmp | 0xA3);
536 tmp = (phy->pga_gain | 0xEFA0);
537 b43_phy_write(dev, B43_PHY_PGACTL, tmp);
539 if (phy->type == B43_PHYTYPE_G) {
541 b43_phy_write(dev, B43_PHY_CCK(0x2E), 0xC078);
543 b43_phy_write(dev, B43_PHY_CCK(0x2E), 0x8078);
545 b43_phy_write(dev, B43_PHY_CCK(0x2F), 0x0202);
547 b43_phy_write(dev, B43_PHY_CCK(0x2F), 0x0101);
549 b43_write16(dev, 0x3F4, sav->reg_3F4);
550 b43_phy_write(dev, B43_PHY_PGACTL, sav->phy_pgactl);
551 b43_phy_write(dev, B43_PHY_CCK(0x2A), sav->phy_cck_2A);
552 b43_phy_write(dev, B43_PHY_SYNCCTL, sav->phy_syncctl);
553 b43_phy_write(dev, B43_PHY_DACCTL, sav->phy_dacctl);
554 b43_radio_write16(dev, 0x43, sav->radio_43);
555 b43_radio_write16(dev, 0x7A, sav->radio_7A);
556 if (!has_tx_magnification(phy)) {
558 b43_radio_write16(dev, 0x52, (b43_radio_read16(dev, 0x52)
561 b43_write16(dev, 0x3E2, sav->reg_3E2);
562 if (phy->type == B43_PHYTYPE_B &&
563 phy->radio_ver == 0x2050 && phy->radio_rev <= 5) {
564 b43_phy_write(dev, B43_PHY_CCK(0x30), sav->phy_cck_30);
565 b43_phy_write(dev, B43_PHY_CCK(0x06), sav->phy_cck_06);
568 b43_phy_write(dev, B43_PHY_ANALOGOVER, sav->phy_analogover);
569 b43_phy_write(dev, B43_PHY_ANALOGOVERVAL,
570 sav->phy_analogoverval);
571 b43_phy_write(dev, B43_PHY_CLASSCTL, sav->phy_classctl);
572 b43_phy_write(dev, B43_PHY_RFOVER, sav->phy_rfover);
573 b43_phy_write(dev, B43_PHY_RFOVERVAL, sav->phy_rfoverval);
574 b43_phy_write(dev, B43_PHY_CCK(0x3E), sav->phy_cck_3E);
575 b43_phy_write(dev, B43_PHY_CRS0, sav->phy_crs0);
577 if (b43_has_hardware_pctl(phy)) {
578 tmp = (sav->phy_lo_mask & 0xBFFF);
579 b43_phy_write(dev, B43_PHY_LO_MASK, tmp);
580 b43_phy_write(dev, B43_PHY_EXTG(0x01), sav->phy_extg_01);
581 b43_phy_write(dev, B43_PHY_DACCTL, sav->phy_dacctl_hwpctl);
582 b43_phy_write(dev, B43_PHY_CCK(0x14), sav->phy_cck_14);
583 b43_phy_write(dev, B43_PHY_HPWR_TSSICTL, sav->phy_hpwr_tssictl);
585 b43_radio_selectchannel(dev, sav->old_channel, 1);
588 struct b43_lo_g_statemachine {
591 int state_val_multiplier;
593 struct b43_loctl min_loctl;
596 /* Loop over each possible value in this state. */
597 static int lo_probe_possible_loctls(struct b43_wldev *dev,
598 struct b43_loctl *probe_loctl,
599 struct b43_lo_g_statemachine *d)
601 struct b43_phy *phy = &dev->phy;
602 struct b43_loctl test_loctl;
603 struct b43_loctl orig_loctl;
604 struct b43_loctl prev_loctl = {
613 static const struct b43_loctl modifiers[] = {
624 if (d->current_state == 0) {
627 } else if (d->current_state % 2 == 0) {
628 begin = d->current_state - 1;
629 end = d->current_state + 1;
631 begin = d->current_state - 2;
632 end = d->current_state + 2;
639 memcpy(&orig_loctl, probe_loctl, sizeof(struct b43_loctl));
641 d->current_state = i;
643 B43_WARN_ON(!(i >= 1 && i <= 8));
644 memcpy(&test_loctl, &orig_loctl, sizeof(struct b43_loctl));
645 test_loctl.i += modifiers[i - 1].i * d->state_val_multiplier;
646 test_loctl.q += modifiers[i - 1].q * d->state_val_multiplier;
647 if ((test_loctl.i != prev_loctl.i ||
648 test_loctl.q != prev_loctl.q) &&
649 (abs(test_loctl.i) <= 16 && abs(test_loctl.q) <= 16)) {
650 b43_lo_write(dev, &test_loctl);
651 feedth = lo_measure_feedthrough(dev, phy->lna_gain,
654 if (feedth < d->lowest_feedth) {
655 memcpy(probe_loctl, &test_loctl,
656 sizeof(struct b43_loctl));
658 d->lowest_feedth = feedth;
659 if ((d->nr_measured < 2) &&
660 !has_loopback_gain(phy))
664 memcpy(&prev_loctl, &test_loctl, sizeof(prev_loctl));
671 d->current_state = i;
677 static void lo_probe_loctls_statemachine(struct b43_wldev *dev,
678 struct b43_loctl *loctl,
681 struct b43_phy *phy = &dev->phy;
682 struct b43_lo_g_statemachine d;
685 struct b43_loctl probe_loctl;
686 int max_repeat = 1, repeat_cnt = 0;
689 d.state_val_multiplier = 1;
690 if (has_loopback_gain(phy))
691 d.state_val_multiplier = 3;
693 memcpy(&d.min_loctl, loctl, sizeof(struct b43_loctl));
694 if (has_loopback_gain(phy))
697 b43_lo_write(dev, &d.min_loctl);
698 feedth = lo_measure_feedthrough(dev, phy->lna_gain,
701 if (feedth < 0x258) {
706 feedth = lo_measure_feedthrough(dev, phy->lna_gain,
710 d.lowest_feedth = feedth;
715 (d.current_state >= 0
716 && d.current_state <= 8));
717 memcpy(&probe_loctl, &d.min_loctl,
718 sizeof(struct b43_loctl));
720 lo_probe_possible_loctls(dev, &probe_loctl, &d);
723 if ((probe_loctl.i == d.min_loctl.i) &&
724 (probe_loctl.q == d.min_loctl.q))
726 memcpy(&d.min_loctl, &probe_loctl,
727 sizeof(struct b43_loctl));
729 } while (d.nr_measured < 24);
730 memcpy(loctl, &d.min_loctl, sizeof(struct b43_loctl));
732 if (has_loopback_gain(phy)) {
733 if (d.lowest_feedth > 0x1194)
735 else if (d.lowest_feedth < 0x5DC)
737 if (repeat_cnt == 0) {
738 if (d.lowest_feedth <= 0x5DC) {
739 d.state_val_multiplier = 1;
742 d.state_val_multiplier = 2;
743 } else if (repeat_cnt == 2)
744 d.state_val_multiplier = 1;
746 lo_measure_gain_values(dev, *max_rx_gain,
747 has_loopback_gain(phy));
748 } while (++repeat_cnt < max_repeat);
752 struct b43_lo_calib * b43_calibrate_lo_setting(struct b43_wldev *dev,
753 const struct b43_bbatt *bbatt,
754 const struct b43_rfatt *rfatt)
756 struct b43_phy *phy = &dev->phy;
757 struct b43_loctl loctl = {
762 struct b43_lo_calib *cal;
763 struct lo_g_saved_values uninitialized_var(saved_regs);
764 /* Values from the "TXCTL Register and Value Table" */
769 saved_regs.old_channel = phy->channel;
770 b43_mac_suspend(dev);
771 lo_measure_setup(dev, &saved_regs);
773 txctl_reg = lo_txctl_register_table(dev, &txctl_value, &pad_mix_gain);
775 b43_radio_write16(dev, 0x43,
776 (b43_radio_read16(dev, 0x43) & 0xFFF0)
778 b43_radio_write16(dev, txctl_reg,
779 (b43_radio_read16(dev, txctl_reg) & ~txctl_value)
780 | (rfatt->with_padmix) ? txctl_value : 0);
782 max_rx_gain = rfatt->att * 2;
783 max_rx_gain += bbatt->att / 2;
784 if (rfatt->with_padmix)
785 max_rx_gain -= pad_mix_gain;
786 if (has_loopback_gain(phy))
787 max_rx_gain += phy->max_lb_gain;
788 lo_measure_gain_values(dev, max_rx_gain,
789 has_loopback_gain(phy));
791 b43_phy_set_baseband_attenuation(dev, bbatt->att);
792 lo_probe_loctls_statemachine(dev, &loctl, &max_rx_gain);
794 lo_measure_restore(dev, &saved_regs);
797 if (b43_debug(dev, B43_DBG_LO)) {
798 b43dbg(dev->wl, "LO: Calibrated for BB(%u), RF(%u,%u) "
800 bbatt->att, rfatt->att, rfatt->with_padmix,
804 cal = kmalloc(sizeof(*cal), GFP_KERNEL);
806 b43warn(dev->wl, "LO calib: out of memory\n");
809 memcpy(&cal->bbatt, bbatt, sizeof(*bbatt));
810 memcpy(&cal->rfatt, rfatt, sizeof(*rfatt));
811 memcpy(&cal->ctl, &loctl, sizeof(loctl));
812 cal->calib_time = jiffies;
813 INIT_LIST_HEAD(&cal->list);
818 /* Get a calibrated LO setting for the given attenuation values.
819 * Might return a NULL pointer under OOM! */
821 struct b43_lo_calib * b43_get_calib_lo_settings(struct b43_wldev *dev,
822 const struct b43_bbatt *bbatt,
823 const struct b43_rfatt *rfatt)
825 struct b43_txpower_lo_control *lo = dev->phy.lo_control;
826 struct b43_lo_calib *c;
828 c = b43_find_lo_calib(lo, bbatt, rfatt);
831 /* Not in the list of calibrated LO settings.
832 * Calibrate it now. */
833 c = b43_calibrate_lo_setting(dev, bbatt, rfatt);
836 list_add(&c->list, &lo->calib_list);
841 void b43_gphy_dc_lt_init(struct b43_wldev *dev, bool update_all)
843 struct b43_phy *phy = &dev->phy;
844 struct b43_txpower_lo_control *lo = phy->lo_control;
846 int rf_offset, bb_offset;
847 const struct b43_rfatt *rfatt;
848 const struct b43_bbatt *bbatt;
850 bool table_changed = 0;
852 BUILD_BUG_ON(B43_DC_LT_SIZE != 32);
853 B43_WARN_ON(lo->rfatt_list.len * lo->bbatt_list.len > 64);
855 power_vector = lo->power_vector;
856 if (!update_all && !power_vector)
857 return; /* Nothing to do. */
859 /* Suspend the MAC now to avoid continuous suspend/enable
860 * cycles in the loop. */
861 b43_mac_suspend(dev);
863 for (i = 0; i < B43_DC_LT_SIZE * 2; i++) {
864 struct b43_lo_calib *cal;
868 if (!update_all && !(power_vector & (((u64)1ULL) << i)))
870 /* Update the table entry for this power_vector bit.
871 * The table rows are RFatt entries and columns are BBatt. */
872 bb_offset = i / lo->rfatt_list.len;
873 rf_offset = i % lo->rfatt_list.len;
874 bbatt = &(lo->bbatt_list.list[bb_offset]);
875 rfatt = &(lo->rfatt_list.list[rf_offset]);
877 cal = b43_calibrate_lo_setting(dev, bbatt, rfatt);
879 b43warn(dev->wl, "LO: Could not "
880 "calibrate DC table entry\n");
883 /*FIXME: Is Q really in the low nibble? */
884 val = (u8)(cal->ctl.q);
885 val |= ((u8)(cal->ctl.i)) << 4;
888 /* Get the index into the hardware DC LT. */
890 /* Change the table in memory. */
892 /* Change the high byte. */
893 lo->dc_lt[idx] = (lo->dc_lt[idx] & 0x00FF)
894 | ((val & 0x00FF) << 8);
896 /* Change the low byte. */
897 lo->dc_lt[idx] = (lo->dc_lt[idx] & 0xFF00)
903 /* The table changed in memory. Update the hardware table. */
904 for (i = 0; i < B43_DC_LT_SIZE; i++)
905 b43_phy_write(dev, 0x3A0 + i, lo->dc_lt[i]);
910 /* Fixup the RF attenuation value for the case where we are
911 * using the PAD mixer. */
912 static inline void b43_lo_fixup_rfatt(struct b43_rfatt *rf)
914 if (!rf->with_padmix)
916 if ((rf->att != 1) && (rf->att != 2) && (rf->att != 3))
920 void b43_lo_g_adjust(struct b43_wldev *dev)
922 struct b43_phy *phy = &dev->phy;
923 struct b43_lo_calib *cal;
926 memcpy(&rf, &phy->rfatt, sizeof(rf));
927 b43_lo_fixup_rfatt(&rf);
929 cal = b43_get_calib_lo_settings(dev, &phy->bbatt, &rf);
932 b43_lo_write(dev, &cal->ctl);
935 void b43_lo_g_adjust_to(struct b43_wldev *dev,
936 u16 rfatt, u16 bbatt, u16 tx_control)
940 struct b43_lo_calib *cal;
942 memset(&rf, 0, sizeof(rf));
943 memset(&bb, 0, sizeof(bb));
946 b43_lo_fixup_rfatt(&rf);
947 cal = b43_get_calib_lo_settings(dev, &bb, &rf);
950 b43_lo_write(dev, &cal->ctl);
953 /* Periodic LO maintanance work */
954 void b43_lo_g_maintanance_work(struct b43_wldev *dev)
956 struct b43_phy *phy = &dev->phy;
957 struct b43_txpower_lo_control *lo = phy->lo_control;
959 unsigned long expire;
960 struct b43_lo_calib *cal, *tmp;
961 bool current_item_expired = 0;
967 hwpctl = b43_has_hardware_pctl(phy);
970 /* Read the power vector and update it, if needed. */
971 expire = now - B43_LO_PWRVEC_EXPIRE;
972 if (time_before(lo->pwr_vec_read_time, expire)) {
973 lo_read_power_vector(dev);
974 b43_gphy_dc_lt_init(dev, 0);
976 //FIXME Recalc the whole DC table from time to time?
981 /* Search for expired LO settings. Remove them.
982 * Recalibrate the current setting, if expired. */
983 expire = now - B43_LO_CALIB_EXPIRE;
984 list_for_each_entry_safe(cal, tmp, &lo->calib_list, list) {
985 if (!time_before(cal->calib_time, expire))
987 /* This item expired. */
988 if (b43_compare_bbatt(&cal->bbatt, &phy->bbatt) &&
989 b43_compare_rfatt(&cal->rfatt, &phy->rfatt)) {
990 B43_WARN_ON(current_item_expired);
991 current_item_expired = 1;
993 if (b43_debug(dev, B43_DBG_LO)) {
994 b43dbg(dev->wl, "LO: Item BB(%u), RF(%u,%u), "
995 "I=%d, Q=%d expired\n",
996 cal->bbatt.att, cal->rfatt.att,
997 cal->rfatt.with_padmix,
998 cal->ctl.i, cal->ctl.q);
1000 list_del(&cal->list);
1003 if (current_item_expired || unlikely(list_empty(&lo->calib_list))) {
1004 /* Recalibrate currently used LO setting. */
1005 if (b43_debug(dev, B43_DBG_LO))
1006 b43dbg(dev->wl, "LO: Recalibrating current LO setting\n");
1007 cal = b43_calibrate_lo_setting(dev, &phy->bbatt, &phy->rfatt);
1009 list_add(&cal->list, &lo->calib_list);
1010 b43_lo_write(dev, &cal->ctl);
1012 b43warn(dev->wl, "Failed to recalibrate current LO setting\n");
1016 void b43_lo_g_cleanup(struct b43_wldev *dev)
1018 struct b43_txpower_lo_control *lo = dev->phy.lo_control;
1019 struct b43_lo_calib *cal, *tmp;
1023 list_for_each_entry_safe(cal, tmp, &lo->calib_list, list) {
1024 list_del(&cal->list);
1029 /* LO Initialization */
1030 void b43_lo_g_init(struct b43_wldev *dev)
1032 struct b43_phy *phy = &dev->phy;
1034 if (b43_has_hardware_pctl(phy)) {
1035 lo_read_power_vector(dev);
1036 b43_gphy_dc_lt_init(dev, 1);