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 <m@bues.ch>
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>
37 #include <linux/slab.h>
40 static struct b43_lo_calib *b43_find_lo_calib(struct b43_txpower_lo_control *lo,
41 const struct b43_bbatt *bbatt,
42 const struct b43_rfatt *rfatt)
44 struct b43_lo_calib *c;
46 list_for_each_entry(c, &lo->calib_list, list) {
47 if (!b43_compare_bbatt(&c->bbatt, bbatt))
49 if (!b43_compare_rfatt(&c->rfatt, rfatt))
57 /* Write the LocalOscillator Control (adjust) value-pair. */
58 static void b43_lo_write(struct b43_wldev *dev, struct b43_loctl *control)
60 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);
71 B43_WARN_ON(phy->type != B43_PHYTYPE_G);
73 value = (u8) (control->q);
74 value |= ((u8) (control->i)) << 8;
75 b43_phy_write(dev, B43_PHY_LO_CTL, value);
78 static u16 lo_measure_feedthrough(struct b43_wldev *dev,
79 u16 lna, u16 pga, u16 trsw_rx)
81 struct b43_phy *phy = &dev->phy;
86 lna <<= B43_PHY_RFOVERVAL_LNA_SHIFT;
87 pga <<= B43_PHY_RFOVERVAL_PGA_SHIFT;
89 B43_WARN_ON(lna & ~B43_PHY_RFOVERVAL_LNA);
90 B43_WARN_ON(pga & ~B43_PHY_RFOVERVAL_PGA);
91 /*FIXME This assertion fails B43_WARN_ON(trsw_rx & ~(B43_PHY_RFOVERVAL_TRSWRX |
92 B43_PHY_RFOVERVAL_BW));
94 trsw_rx &= (B43_PHY_RFOVERVAL_TRSWRX | B43_PHY_RFOVERVAL_BW);
96 /* Construct the RF Override Value */
97 rfover = B43_PHY_RFOVERVAL_UNK;
101 if ((dev->dev->bus_sprom->boardflags_lo & B43_BFL_EXTLNA)
103 rfover |= B43_PHY_RFOVERVAL_EXTLNA;
105 b43_phy_write(dev, B43_PHY_PGACTL, 0xE300);
106 b43_phy_write(dev, B43_PHY_RFOVERVAL, rfover);
108 rfover |= B43_PHY_RFOVERVAL_BW_LBW;
109 b43_phy_write(dev, B43_PHY_RFOVERVAL, rfover);
111 rfover |= B43_PHY_RFOVERVAL_BW_LPF;
112 b43_phy_write(dev, B43_PHY_RFOVERVAL, rfover);
114 b43_phy_write(dev, B43_PHY_PGACTL, 0xF300);
116 pga |= B43_PHY_PGACTL_UNKNOWN;
117 b43_phy_write(dev, B43_PHY_PGACTL, pga);
119 pga |= B43_PHY_PGACTL_LOWBANDW;
120 b43_phy_write(dev, B43_PHY_PGACTL, pga);
122 pga |= B43_PHY_PGACTL_LPF;
123 b43_phy_write(dev, B43_PHY_PGACTL, pga);
126 feedthrough = b43_phy_read(dev, B43_PHY_LO_LEAKAGE);
128 /* This is a good place to check if we need to relax a bit,
129 * as this is the main function called regularly
130 * in the LO calibration. */
136 /* TXCTL Register and Value Table.
137 * Returns the "TXCTL Register".
138 * "value" is the "TXCTL Value".
139 * "pad_mix_gain" is the PAD Mixer Gain.
141 static u16 lo_txctl_register_table(struct b43_wldev *dev,
142 u16 *value, u16 *pad_mix_gain)
144 struct b43_phy *phy = &dev->phy;
147 if (phy->type == B43_PHYTYPE_B) {
149 if (phy->radio_rev <= 5) {
157 if (phy->rev >= 2 && phy->radio_rev == 8) {
170 *pad_mix_gain = padmix;
175 static void lo_measure_txctl_values(struct b43_wldev *dev)
177 struct b43_phy *phy = &dev->phy;
178 struct b43_phy_g *gphy = phy->g;
179 struct b43_txpower_lo_control *lo = gphy->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 = gphy->max_lb_gain / 2;
203 pga = abs(10 - lb_gain) / 6;
204 pga = clamp_val(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_maskset(dev, 0x43, 0xFFF0, radio_pctl_reg);
230 b43_gphy_set_baseband_attenuation(dev, 2);
232 reg = lo_txctl_register_table(dev, &mask, NULL);
234 b43_radio_mask(dev, reg, mask);
236 if (has_tx_magnification(phy)) {
239 int min_feedth = 0xFFFF;
242 for (i = 0; i < ARRAY_SIZE(tx_magn_values); i++) {
243 tx_magn = tx_magn_values[i];
244 b43_radio_maskset(dev, 0x52, 0xFF0F, tx_magn);
245 for (j = 0; j < ARRAY_SIZE(tx_bias_values); j++) {
246 tx_bias = tx_bias_values[j];
247 b43_radio_maskset(dev, 0x52, 0xFFF0, tx_bias);
249 lo_measure_feedthrough(dev, 0, pga,
251 if (feedthrough < min_feedth) {
252 lo->tx_bias = tx_bias;
253 lo->tx_magn = tx_magn;
254 min_feedth = feedthrough;
256 if (lo->tx_bias == 0)
259 b43_radio_write16(dev, 0x52,
260 (b43_radio_read16(dev, 0x52)
261 & 0xFF00) | lo->tx_bias | lo->
267 b43_radio_mask(dev, 0x52, 0xFFF0); /* TX bias == 0 */
269 lo->txctl_measured_time = jiffies;
272 static void lo_read_power_vector(struct b43_wldev *dev)
274 struct b43_phy *phy = &dev->phy;
275 struct b43_phy_g *gphy = phy->g;
276 struct b43_txpower_lo_control *lo = gphy->lo_control;
279 u64 power_vector = 0;
281 for (i = 0; i < 8; i += 2) {
282 tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x310 + i);
283 power_vector |= (tmp << (i * 8));
284 /* Clear the vector on the device. */
285 b43_shm_write16(dev, B43_SHM_SHARED, 0x310 + i, 0);
288 lo->power_vector = power_vector;
289 lo->pwr_vec_read_time = jiffies;
292 /* 802.11/LO/GPHY/MeasuringGains */
293 static void lo_measure_gain_values(struct b43_wldev *dev,
294 s16 max_rx_gain, int use_trsw_rx)
296 struct b43_phy *phy = &dev->phy;
297 struct b43_phy_g *gphy = phy->g;
303 if (has_loopback_gain(phy)) {
307 trsw_rx_gain = gphy->trsw_rx_gain / 2;
308 if (max_rx_gain >= trsw_rx_gain) {
309 trsw_rx_gain = max_rx_gain - trsw_rx_gain;
312 trsw_rx_gain = max_rx_gain;
313 if (trsw_rx_gain < 9) {
314 gphy->lna_lod_gain = 0;
316 gphy->lna_lod_gain = 1;
319 trsw_rx_gain = clamp_val(trsw_rx_gain, 0, 0x2D);
320 gphy->pga_gain = trsw_rx_gain / 3;
321 if (gphy->pga_gain >= 5) {
328 gphy->trsw_rx_gain = 0x20;
329 if (max_rx_gain >= 0x14) {
330 gphy->lna_lod_gain = 1;
332 } else if (max_rx_gain >= 0x12) {
333 gphy->lna_lod_gain = 1;
335 } else if (max_rx_gain >= 0xF) {
336 gphy->lna_lod_gain = 1;
339 gphy->lna_lod_gain = 0;
344 tmp = b43_radio_read16(dev, 0x7A);
345 if (gphy->lna_lod_gain == 0)
349 b43_radio_write16(dev, 0x7A, tmp);
352 struct lo_g_saved_values {
362 u16 phy_dacctl_hwpctl;
365 u16 phy_hpwr_tssictl;
367 u16 phy_analogoverval;
379 /* Radio registers */
385 static void lo_measure_setup(struct b43_wldev *dev,
386 struct lo_g_saved_values *sav)
388 struct ssb_sprom *sprom = dev->dev->bus_sprom;
389 struct b43_phy *phy = &dev->phy;
390 struct b43_phy_g *gphy = phy->g;
391 struct b43_txpower_lo_control *lo = gphy->lo_control;
394 if (b43_has_hardware_pctl(dev)) {
395 sav->phy_lo_mask = b43_phy_read(dev, B43_PHY_LO_MASK);
396 sav->phy_extg_01 = b43_phy_read(dev, B43_PHY_EXTG(0x01));
397 sav->phy_dacctl_hwpctl = b43_phy_read(dev, B43_PHY_DACCTL);
398 sav->phy_cck_14 = b43_phy_read(dev, B43_PHY_CCK(0x14));
399 sav->phy_hpwr_tssictl = b43_phy_read(dev, B43_PHY_HPWR_TSSICTL);
401 b43_phy_set(dev, B43_PHY_HPWR_TSSICTL, 0x100);
402 b43_phy_set(dev, B43_PHY_EXTG(0x01), 0x40);
403 b43_phy_set(dev, B43_PHY_DACCTL, 0x40);
404 b43_phy_set(dev, B43_PHY_CCK(0x14), 0x200);
406 if (phy->type == B43_PHYTYPE_B &&
407 phy->radio_ver == 0x2050 && phy->radio_rev < 6) {
408 b43_phy_write(dev, B43_PHY_CCK(0x16), 0x410);
409 b43_phy_write(dev, B43_PHY_CCK(0x17), 0x820);
412 sav->phy_analogover = b43_phy_read(dev, B43_PHY_ANALOGOVER);
413 sav->phy_analogoverval =
414 b43_phy_read(dev, B43_PHY_ANALOGOVERVAL);
415 sav->phy_rfover = b43_phy_read(dev, B43_PHY_RFOVER);
416 sav->phy_rfoverval = b43_phy_read(dev, B43_PHY_RFOVERVAL);
417 sav->phy_classctl = b43_phy_read(dev, B43_PHY_CLASSCTL);
418 sav->phy_cck_3E = b43_phy_read(dev, B43_PHY_CCK(0x3E));
419 sav->phy_crs0 = b43_phy_read(dev, B43_PHY_CRS0);
421 b43_phy_mask(dev, B43_PHY_CLASSCTL, 0xFFFC);
422 b43_phy_mask(dev, B43_PHY_CRS0, 0x7FFF);
423 b43_phy_set(dev, B43_PHY_ANALOGOVER, 0x0003);
424 b43_phy_mask(dev, B43_PHY_ANALOGOVERVAL, 0xFFFC);
425 if (phy->type == B43_PHYTYPE_G) {
426 if ((phy->rev >= 7) &&
427 (sprom->boardflags_lo & B43_BFL_EXTLNA)) {
428 b43_phy_write(dev, B43_PHY_RFOVER, 0x933);
430 b43_phy_write(dev, B43_PHY_RFOVER, 0x133);
433 b43_phy_write(dev, B43_PHY_RFOVER, 0);
435 b43_phy_write(dev, B43_PHY_CCK(0x3E), 0);
437 sav->reg_3F4 = b43_read16(dev, 0x3F4);
438 sav->reg_3E2 = b43_read16(dev, 0x3E2);
439 sav->radio_43 = b43_radio_read16(dev, 0x43);
440 sav->radio_7A = b43_radio_read16(dev, 0x7A);
441 sav->phy_pgactl = b43_phy_read(dev, B43_PHY_PGACTL);
442 sav->phy_cck_2A = b43_phy_read(dev, B43_PHY_CCK(0x2A));
443 sav->phy_syncctl = b43_phy_read(dev, B43_PHY_SYNCCTL);
444 sav->phy_dacctl = b43_phy_read(dev, B43_PHY_DACCTL);
446 if (!has_tx_magnification(phy)) {
447 sav->radio_52 = b43_radio_read16(dev, 0x52);
448 sav->radio_52 &= 0x00F0;
450 if (phy->type == B43_PHYTYPE_B) {
451 sav->phy_cck_30 = b43_phy_read(dev, B43_PHY_CCK(0x30));
452 sav->phy_cck_06 = b43_phy_read(dev, B43_PHY_CCK(0x06));
453 b43_phy_write(dev, B43_PHY_CCK(0x30), 0x00FF);
454 b43_phy_write(dev, B43_PHY_CCK(0x06), 0x3F3F);
456 b43_write16(dev, 0x3E2, b43_read16(dev, 0x3E2)
459 b43_write16(dev, 0x3F4, b43_read16(dev, 0x3F4)
463 (phy->type == B43_PHYTYPE_G) ? B43_PHY_LO_MASK : B43_PHY_CCK(0x2E);
464 b43_phy_write(dev, tmp, 0x007F);
466 tmp = sav->phy_syncctl;
467 b43_phy_write(dev, B43_PHY_SYNCCTL, tmp & 0xFF7F);
469 b43_radio_write16(dev, 0x007A, tmp & 0xFFF0);
471 b43_phy_write(dev, B43_PHY_CCK(0x2A), 0x8A3);
472 if (phy->type == B43_PHYTYPE_G ||
473 (phy->type == B43_PHYTYPE_B &&
474 phy->radio_ver == 0x2050 && phy->radio_rev >= 6)) {
475 b43_phy_write(dev, B43_PHY_CCK(0x2B), 0x1003);
477 b43_phy_write(dev, B43_PHY_CCK(0x2B), 0x0802);
479 b43_dummy_transmission(dev, false, true);
480 b43_gphy_channel_switch(dev, 6, 0);
481 b43_radio_read16(dev, 0x51); /* dummy read */
482 if (phy->type == B43_PHYTYPE_G)
483 b43_phy_write(dev, B43_PHY_CCK(0x2F), 0);
485 /* Re-measure the txctl values, if needed. */
486 if (time_before(lo->txctl_measured_time,
487 jiffies - B43_LO_TXCTL_EXPIRE))
488 lo_measure_txctl_values(dev);
490 if (phy->type == B43_PHYTYPE_G && phy->rev >= 3) {
491 b43_phy_write(dev, B43_PHY_LO_MASK, 0xC078);
493 if (phy->type == B43_PHYTYPE_B)
494 b43_phy_write(dev, B43_PHY_CCK(0x2E), 0x8078);
496 b43_phy_write(dev, B43_PHY_LO_MASK, 0x8078);
500 static void lo_measure_restore(struct b43_wldev *dev,
501 struct lo_g_saved_values *sav)
503 struct b43_phy *phy = &dev->phy;
504 struct b43_phy_g *gphy = phy->g;
508 b43_phy_write(dev, B43_PHY_PGACTL, 0xE300);
509 tmp = (gphy->pga_gain << 8);
510 b43_phy_write(dev, B43_PHY_RFOVERVAL, tmp | 0xA0);
512 b43_phy_write(dev, B43_PHY_RFOVERVAL, tmp | 0xA2);
514 b43_phy_write(dev, B43_PHY_RFOVERVAL, tmp | 0xA3);
516 tmp = (gphy->pga_gain | 0xEFA0);
517 b43_phy_write(dev, B43_PHY_PGACTL, tmp);
519 if (phy->type == B43_PHYTYPE_G) {
521 b43_phy_write(dev, B43_PHY_CCK(0x2E), 0xC078);
523 b43_phy_write(dev, B43_PHY_CCK(0x2E), 0x8078);
525 b43_phy_write(dev, B43_PHY_CCK(0x2F), 0x0202);
527 b43_phy_write(dev, B43_PHY_CCK(0x2F), 0x0101);
529 b43_write16(dev, 0x3F4, sav->reg_3F4);
530 b43_phy_write(dev, B43_PHY_PGACTL, sav->phy_pgactl);
531 b43_phy_write(dev, B43_PHY_CCK(0x2A), sav->phy_cck_2A);
532 b43_phy_write(dev, B43_PHY_SYNCCTL, sav->phy_syncctl);
533 b43_phy_write(dev, B43_PHY_DACCTL, sav->phy_dacctl);
534 b43_radio_write16(dev, 0x43, sav->radio_43);
535 b43_radio_write16(dev, 0x7A, sav->radio_7A);
536 if (!has_tx_magnification(phy)) {
538 b43_radio_maskset(dev, 0x52, 0xFF0F, tmp);
540 b43_write16(dev, 0x3E2, sav->reg_3E2);
541 if (phy->type == B43_PHYTYPE_B &&
542 phy->radio_ver == 0x2050 && phy->radio_rev <= 5) {
543 b43_phy_write(dev, B43_PHY_CCK(0x30), sav->phy_cck_30);
544 b43_phy_write(dev, B43_PHY_CCK(0x06), sav->phy_cck_06);
547 b43_phy_write(dev, B43_PHY_ANALOGOVER, sav->phy_analogover);
548 b43_phy_write(dev, B43_PHY_ANALOGOVERVAL,
549 sav->phy_analogoverval);
550 b43_phy_write(dev, B43_PHY_CLASSCTL, sav->phy_classctl);
551 b43_phy_write(dev, B43_PHY_RFOVER, sav->phy_rfover);
552 b43_phy_write(dev, B43_PHY_RFOVERVAL, sav->phy_rfoverval);
553 b43_phy_write(dev, B43_PHY_CCK(0x3E), sav->phy_cck_3E);
554 b43_phy_write(dev, B43_PHY_CRS0, sav->phy_crs0);
556 if (b43_has_hardware_pctl(dev)) {
557 tmp = (sav->phy_lo_mask & 0xBFFF);
558 b43_phy_write(dev, B43_PHY_LO_MASK, tmp);
559 b43_phy_write(dev, B43_PHY_EXTG(0x01), sav->phy_extg_01);
560 b43_phy_write(dev, B43_PHY_DACCTL, sav->phy_dacctl_hwpctl);
561 b43_phy_write(dev, B43_PHY_CCK(0x14), sav->phy_cck_14);
562 b43_phy_write(dev, B43_PHY_HPWR_TSSICTL, sav->phy_hpwr_tssictl);
564 b43_gphy_channel_switch(dev, sav->old_channel, 1);
567 struct b43_lo_g_statemachine {
570 int state_val_multiplier;
572 struct b43_loctl min_loctl;
575 /* Loop over each possible value in this state. */
576 static int lo_probe_possible_loctls(struct b43_wldev *dev,
577 struct b43_loctl *probe_loctl,
578 struct b43_lo_g_statemachine *d)
580 struct b43_phy *phy = &dev->phy;
581 struct b43_phy_g *gphy = phy->g;
582 struct b43_loctl test_loctl;
583 struct b43_loctl orig_loctl;
584 struct b43_loctl prev_loctl = {
593 static const struct b43_loctl modifiers[] = {
604 if (d->current_state == 0) {
607 } else if (d->current_state % 2 == 0) {
608 begin = d->current_state - 1;
609 end = d->current_state + 1;
611 begin = d->current_state - 2;
612 end = d->current_state + 2;
619 memcpy(&orig_loctl, probe_loctl, sizeof(struct b43_loctl));
621 d->current_state = i;
623 B43_WARN_ON(!(i >= 1 && i <= 8));
624 memcpy(&test_loctl, &orig_loctl, sizeof(struct b43_loctl));
625 test_loctl.i += modifiers[i - 1].i * d->state_val_multiplier;
626 test_loctl.q += modifiers[i - 1].q * d->state_val_multiplier;
627 if ((test_loctl.i != prev_loctl.i ||
628 test_loctl.q != prev_loctl.q) &&
629 (abs(test_loctl.i) <= 16 && abs(test_loctl.q) <= 16)) {
630 b43_lo_write(dev, &test_loctl);
631 feedth = lo_measure_feedthrough(dev, gphy->lna_gain,
634 if (feedth < d->lowest_feedth) {
635 memcpy(probe_loctl, &test_loctl,
636 sizeof(struct b43_loctl));
638 d->lowest_feedth = feedth;
639 if ((d->nr_measured < 2) &&
640 !has_loopback_gain(phy))
644 memcpy(&prev_loctl, &test_loctl, sizeof(prev_loctl));
651 d->current_state = i;
657 static void lo_probe_loctls_statemachine(struct b43_wldev *dev,
658 struct b43_loctl *loctl,
661 struct b43_phy *phy = &dev->phy;
662 struct b43_phy_g *gphy = phy->g;
663 struct b43_lo_g_statemachine d;
666 struct b43_loctl probe_loctl;
667 int max_repeat = 1, repeat_cnt = 0;
670 d.state_val_multiplier = 1;
671 if (has_loopback_gain(phy))
672 d.state_val_multiplier = 3;
674 memcpy(&d.min_loctl, loctl, sizeof(struct b43_loctl));
675 if (has_loopback_gain(phy))
678 b43_lo_write(dev, &d.min_loctl);
679 feedth = lo_measure_feedthrough(dev, gphy->lna_gain,
682 if (feedth < 0x258) {
687 feedth = lo_measure_feedthrough(dev, gphy->lna_gain,
691 d.lowest_feedth = feedth;
696 (d.current_state >= 0
697 && d.current_state <= 8));
698 memcpy(&probe_loctl, &d.min_loctl,
699 sizeof(struct b43_loctl));
701 lo_probe_possible_loctls(dev, &probe_loctl, &d);
704 if ((probe_loctl.i == d.min_loctl.i) &&
705 (probe_loctl.q == d.min_loctl.q))
707 memcpy(&d.min_loctl, &probe_loctl,
708 sizeof(struct b43_loctl));
710 } while (d.nr_measured < 24);
711 memcpy(loctl, &d.min_loctl, sizeof(struct b43_loctl));
713 if (has_loopback_gain(phy)) {
714 if (d.lowest_feedth > 0x1194)
716 else if (d.lowest_feedth < 0x5DC)
718 if (repeat_cnt == 0) {
719 if (d.lowest_feedth <= 0x5DC) {
720 d.state_val_multiplier = 1;
723 d.state_val_multiplier = 2;
724 } else if (repeat_cnt == 2)
725 d.state_val_multiplier = 1;
727 lo_measure_gain_values(dev, *max_rx_gain,
728 has_loopback_gain(phy));
729 } while (++repeat_cnt < max_repeat);
733 struct b43_lo_calib *b43_calibrate_lo_setting(struct b43_wldev *dev,
734 const struct b43_bbatt *bbatt,
735 const struct b43_rfatt *rfatt)
737 struct b43_phy *phy = &dev->phy;
738 struct b43_phy_g *gphy = phy->g;
739 struct b43_loctl loctl = {
744 struct b43_lo_calib *cal;
745 struct lo_g_saved_values uninitialized_var(saved_regs);
746 /* Values from the "TXCTL Register and Value Table" */
751 saved_regs.old_channel = phy->channel;
752 b43_mac_suspend(dev);
753 lo_measure_setup(dev, &saved_regs);
755 txctl_reg = lo_txctl_register_table(dev, &txctl_value, &pad_mix_gain);
757 b43_radio_maskset(dev, 0x43, 0xFFF0, rfatt->att);
758 b43_radio_maskset(dev, txctl_reg, ~txctl_value, (rfatt->with_padmix ? txctl_value :0));
760 max_rx_gain = rfatt->att * 2;
761 max_rx_gain += bbatt->att / 2;
762 if (rfatt->with_padmix)
763 max_rx_gain -= pad_mix_gain;
764 if (has_loopback_gain(phy))
765 max_rx_gain += gphy->max_lb_gain;
766 lo_measure_gain_values(dev, max_rx_gain,
767 has_loopback_gain(phy));
769 b43_gphy_set_baseband_attenuation(dev, bbatt->att);
770 lo_probe_loctls_statemachine(dev, &loctl, &max_rx_gain);
772 lo_measure_restore(dev, &saved_regs);
775 if (b43_debug(dev, B43_DBG_LO)) {
776 b43dbg(dev->wl, "LO: Calibrated for BB(%u), RF(%u,%u) "
778 bbatt->att, rfatt->att, rfatt->with_padmix,
782 cal = kmalloc(sizeof(*cal), GFP_KERNEL);
784 b43warn(dev->wl, "LO calib: out of memory\n");
787 memcpy(&cal->bbatt, bbatt, sizeof(*bbatt));
788 memcpy(&cal->rfatt, rfatt, sizeof(*rfatt));
789 memcpy(&cal->ctl, &loctl, sizeof(loctl));
790 cal->calib_time = jiffies;
791 INIT_LIST_HEAD(&cal->list);
796 /* Get a calibrated LO setting for the given attenuation values.
797 * Might return a NULL pointer under OOM! */
799 struct b43_lo_calib *b43_get_calib_lo_settings(struct b43_wldev *dev,
800 const struct b43_bbatt *bbatt,
801 const struct b43_rfatt *rfatt)
803 struct b43_txpower_lo_control *lo = dev->phy.g->lo_control;
804 struct b43_lo_calib *c;
806 c = b43_find_lo_calib(lo, bbatt, rfatt);
809 /* Not in the list of calibrated LO settings.
810 * Calibrate it now. */
811 c = b43_calibrate_lo_setting(dev, bbatt, rfatt);
814 list_add(&c->list, &lo->calib_list);
819 void b43_gphy_dc_lt_init(struct b43_wldev *dev, bool update_all)
821 struct b43_phy *phy = &dev->phy;
822 struct b43_phy_g *gphy = phy->g;
823 struct b43_txpower_lo_control *lo = gphy->lo_control;
825 int rf_offset, bb_offset;
826 const struct b43_rfatt *rfatt;
827 const struct b43_bbatt *bbatt;
829 bool table_changed = false;
831 BUILD_BUG_ON(B43_DC_LT_SIZE != 32);
832 B43_WARN_ON(lo->rfatt_list.len * lo->bbatt_list.len > 64);
834 power_vector = lo->power_vector;
835 if (!update_all && !power_vector)
836 return; /* Nothing to do. */
838 /* Suspend the MAC now to avoid continuous suspend/enable
839 * cycles in the loop. */
840 b43_mac_suspend(dev);
842 for (i = 0; i < B43_DC_LT_SIZE * 2; i++) {
843 struct b43_lo_calib *cal;
847 if (!update_all && !(power_vector & (((u64)1ULL) << i)))
849 /* Update the table entry for this power_vector bit.
850 * The table rows are RFatt entries and columns are BBatt. */
851 bb_offset = i / lo->rfatt_list.len;
852 rf_offset = i % lo->rfatt_list.len;
853 bbatt = &(lo->bbatt_list.list[bb_offset]);
854 rfatt = &(lo->rfatt_list.list[rf_offset]);
856 cal = b43_calibrate_lo_setting(dev, bbatt, rfatt);
858 b43warn(dev->wl, "LO: Could not "
859 "calibrate DC table entry\n");
862 /*FIXME: Is Q really in the low nibble? */
863 val = (u8)(cal->ctl.q);
864 val |= ((u8)(cal->ctl.i)) << 4;
867 /* Get the index into the hardware DC LT. */
869 /* Change the table in memory. */
871 /* Change the high byte. */
872 lo->dc_lt[idx] = (lo->dc_lt[idx] & 0x00FF)
873 | ((val & 0x00FF) << 8);
875 /* Change the low byte. */
876 lo->dc_lt[idx] = (lo->dc_lt[idx] & 0xFF00)
879 table_changed = true;
882 /* The table changed in memory. Update the hardware table. */
883 for (i = 0; i < B43_DC_LT_SIZE; i++)
884 b43_phy_write(dev, 0x3A0 + i, lo->dc_lt[i]);
889 /* Fixup the RF attenuation value for the case where we are
890 * using the PAD mixer. */
891 static inline void b43_lo_fixup_rfatt(struct b43_rfatt *rf)
893 if (!rf->with_padmix)
895 if ((rf->att != 1) && (rf->att != 2) && (rf->att != 3))
899 void b43_lo_g_adjust(struct b43_wldev *dev)
901 struct b43_phy_g *gphy = dev->phy.g;
902 struct b43_lo_calib *cal;
905 memcpy(&rf, &gphy->rfatt, sizeof(rf));
906 b43_lo_fixup_rfatt(&rf);
908 cal = b43_get_calib_lo_settings(dev, &gphy->bbatt, &rf);
911 b43_lo_write(dev, &cal->ctl);
914 void b43_lo_g_adjust_to(struct b43_wldev *dev,
915 u16 rfatt, u16 bbatt, u16 tx_control)
919 struct b43_lo_calib *cal;
921 memset(&rf, 0, sizeof(rf));
922 memset(&bb, 0, sizeof(bb));
925 b43_lo_fixup_rfatt(&rf);
926 cal = b43_get_calib_lo_settings(dev, &bb, &rf);
929 b43_lo_write(dev, &cal->ctl);
932 /* Periodic LO maintanance work */
933 void b43_lo_g_maintanance_work(struct b43_wldev *dev)
935 struct b43_phy *phy = &dev->phy;
936 struct b43_phy_g *gphy = phy->g;
937 struct b43_txpower_lo_control *lo = gphy->lo_control;
939 unsigned long expire;
940 struct b43_lo_calib *cal, *tmp;
941 bool current_item_expired = false;
947 hwpctl = b43_has_hardware_pctl(dev);
950 /* Read the power vector and update it, if needed. */
951 expire = now - B43_LO_PWRVEC_EXPIRE;
952 if (time_before(lo->pwr_vec_read_time, expire)) {
953 lo_read_power_vector(dev);
954 b43_gphy_dc_lt_init(dev, 0);
956 //FIXME Recalc the whole DC table from time to time?
961 /* Search for expired LO settings. Remove them.
962 * Recalibrate the current setting, if expired. */
963 expire = now - B43_LO_CALIB_EXPIRE;
964 list_for_each_entry_safe(cal, tmp, &lo->calib_list, list) {
965 if (!time_before(cal->calib_time, expire))
967 /* This item expired. */
968 if (b43_compare_bbatt(&cal->bbatt, &gphy->bbatt) &&
969 b43_compare_rfatt(&cal->rfatt, &gphy->rfatt)) {
970 B43_WARN_ON(current_item_expired);
971 current_item_expired = true;
973 if (b43_debug(dev, B43_DBG_LO)) {
974 b43dbg(dev->wl, "LO: Item BB(%u), RF(%u,%u), "
975 "I=%d, Q=%d expired\n",
976 cal->bbatt.att, cal->rfatt.att,
977 cal->rfatt.with_padmix,
978 cal->ctl.i, cal->ctl.q);
980 list_del(&cal->list);
983 if (current_item_expired || unlikely(list_empty(&lo->calib_list))) {
984 /* Recalibrate currently used LO setting. */
985 if (b43_debug(dev, B43_DBG_LO))
986 b43dbg(dev->wl, "LO: Recalibrating current LO setting\n");
987 cal = b43_calibrate_lo_setting(dev, &gphy->bbatt, &gphy->rfatt);
989 list_add(&cal->list, &lo->calib_list);
990 b43_lo_write(dev, &cal->ctl);
992 b43warn(dev->wl, "Failed to recalibrate current LO setting\n");
996 void b43_lo_g_cleanup(struct b43_wldev *dev)
998 struct b43_txpower_lo_control *lo = dev->phy.g->lo_control;
999 struct b43_lo_calib *cal, *tmp;
1003 list_for_each_entry_safe(cal, tmp, &lo->calib_list, list) {
1004 list_del(&cal->list);
1009 /* LO Initialization */
1010 void b43_lo_g_init(struct b43_wldev *dev)
1012 if (b43_has_hardware_pctl(dev)) {
1013 lo_read_power_vector(dev);
1014 b43_gphy_dc_lt_init(dev, 1);