1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | |
4 | Broadcom B43 wireless driver |
5 | |
6 | G PHY LO (LocalOscillator) Measuring and Control routines |
7 | |
8 | Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>, |
9 | Copyright (c) 2005, 2006 Stefano Brivio <stefano.brivio@polimi.it> |
10 | Copyright (c) 2005-2007 Michael Buesch <m@bues.ch> |
11 | Copyright (c) 2005, 2006 Danny van Dyk <kugelfang@gentoo.org> |
12 | Copyright (c) 2005, 2006 Andreas Jaggi <andreas.jaggi@waterwave.ch> |
13 | |
14 | |
15 | */ |
16 | |
17 | #include "b43.h" |
18 | #include "lo.h" |
19 | #include "phy_g.h" |
20 | #include "main.h" |
21 | |
22 | #include <linux/delay.h> |
23 | #include <linux/sched.h> |
24 | #include <linux/slab.h> |
25 | |
26 | |
27 | static struct b43_lo_calib *b43_find_lo_calib(struct b43_txpower_lo_control *lo, |
28 | const struct b43_bbatt *bbatt, |
29 | const struct b43_rfatt *rfatt) |
30 | { |
31 | struct b43_lo_calib *c; |
32 | |
33 | list_for_each_entry(c, &lo->calib_list, list) { |
34 | if (!b43_compare_bbatt(a: &c->bbatt, b: bbatt)) |
35 | continue; |
36 | if (!b43_compare_rfatt(a: &c->rfatt, b: rfatt)) |
37 | continue; |
38 | return c; |
39 | } |
40 | |
41 | return NULL; |
42 | } |
43 | |
44 | /* Write the LocalOscillator Control (adjust) value-pair. */ |
45 | static void b43_lo_write(struct b43_wldev *dev, struct b43_loctl *control) |
46 | { |
47 | struct b43_phy *phy = &dev->phy; |
48 | u16 value; |
49 | |
50 | if (B43_DEBUG) { |
51 | if (unlikely(abs(control->i) > 16 || abs(control->q) > 16)) { |
52 | b43dbg(wl: dev->wl, fmt: "Invalid LO control pair " |
53 | "(I: %d, Q: %d)\n" , control->i, control->q); |
54 | dump_stack(); |
55 | return; |
56 | } |
57 | } |
58 | B43_WARN_ON(phy->type != B43_PHYTYPE_G); |
59 | |
60 | value = (u8) (control->q); |
61 | value |= ((u8) (control->i)) << 8; |
62 | b43_phy_write(dev, B43_PHY_LO_CTL, value); |
63 | } |
64 | |
65 | static u16 lo_measure_feedthrough(struct b43_wldev *dev, |
66 | u16 lna, u16 pga, u16 trsw_rx) |
67 | { |
68 | struct b43_phy *phy = &dev->phy; |
69 | u16 rfover; |
70 | u16 feedthrough; |
71 | |
72 | if (phy->gmode) { |
73 | lna <<= B43_PHY_RFOVERVAL_LNA_SHIFT; |
74 | pga <<= B43_PHY_RFOVERVAL_PGA_SHIFT; |
75 | |
76 | B43_WARN_ON(lna & ~B43_PHY_RFOVERVAL_LNA); |
77 | B43_WARN_ON(pga & ~B43_PHY_RFOVERVAL_PGA); |
78 | /*FIXME This assertion fails B43_WARN_ON(trsw_rx & ~(B43_PHY_RFOVERVAL_TRSWRX | |
79 | B43_PHY_RFOVERVAL_BW)); |
80 | */ |
81 | trsw_rx &= (B43_PHY_RFOVERVAL_TRSWRX | B43_PHY_RFOVERVAL_BW); |
82 | |
83 | /* Construct the RF Override Value */ |
84 | rfover = B43_PHY_RFOVERVAL_UNK; |
85 | rfover |= pga; |
86 | rfover |= lna; |
87 | rfover |= trsw_rx; |
88 | if ((dev->dev->bus_sprom->boardflags_lo & B43_BFL_EXTLNA) |
89 | && phy->rev > 6) |
90 | rfover |= B43_PHY_RFOVERVAL_EXTLNA; |
91 | |
92 | b43_phy_write(dev, B43_PHY_PGACTL, value: 0xE300); |
93 | b43_phy_write(dev, B43_PHY_RFOVERVAL, value: rfover); |
94 | udelay(10); |
95 | rfover |= B43_PHY_RFOVERVAL_BW_LBW; |
96 | b43_phy_write(dev, B43_PHY_RFOVERVAL, value: rfover); |
97 | udelay(10); |
98 | rfover |= B43_PHY_RFOVERVAL_BW_LPF; |
99 | b43_phy_write(dev, B43_PHY_RFOVERVAL, value: rfover); |
100 | udelay(10); |
101 | b43_phy_write(dev, B43_PHY_PGACTL, value: 0xF300); |
102 | } else { |
103 | pga |= B43_PHY_PGACTL_UNKNOWN; |
104 | b43_phy_write(dev, B43_PHY_PGACTL, value: pga); |
105 | udelay(10); |
106 | pga |= B43_PHY_PGACTL_LOWBANDW; |
107 | b43_phy_write(dev, B43_PHY_PGACTL, value: pga); |
108 | udelay(10); |
109 | pga |= B43_PHY_PGACTL_LPF; |
110 | b43_phy_write(dev, B43_PHY_PGACTL, value: pga); |
111 | } |
112 | udelay(21); |
113 | feedthrough = b43_phy_read(dev, B43_PHY_LO_LEAKAGE); |
114 | |
115 | /* This is a good place to check if we need to relax a bit, |
116 | * as this is the main function called regularly |
117 | * in the LO calibration. */ |
118 | cond_resched(); |
119 | |
120 | return feedthrough; |
121 | } |
122 | |
123 | /* TXCTL Register and Value Table. |
124 | * Returns the "TXCTL Register". |
125 | * "value" is the "TXCTL Value". |
126 | * "pad_mix_gain" is the PAD Mixer Gain. |
127 | */ |
128 | static u16 lo_txctl_register_table(struct b43_wldev *dev, |
129 | u16 *value, u16 *pad_mix_gain) |
130 | { |
131 | struct b43_phy *phy = &dev->phy; |
132 | u16 reg, v, padmix; |
133 | |
134 | if (phy->type == B43_PHYTYPE_B) { |
135 | v = 0x30; |
136 | if (phy->radio_rev <= 5) { |
137 | reg = 0x43; |
138 | padmix = 0; |
139 | } else { |
140 | reg = 0x52; |
141 | padmix = 5; |
142 | } |
143 | } else { |
144 | if (phy->rev >= 2 && phy->radio_rev == 8) { |
145 | reg = 0x43; |
146 | v = 0x10; |
147 | padmix = 2; |
148 | } else { |
149 | reg = 0x52; |
150 | v = 0x30; |
151 | padmix = 5; |
152 | } |
153 | } |
154 | if (value) |
155 | *value = v; |
156 | if (pad_mix_gain) |
157 | *pad_mix_gain = padmix; |
158 | |
159 | return reg; |
160 | } |
161 | |
162 | static void lo_measure_txctl_values(struct b43_wldev *dev) |
163 | { |
164 | struct b43_phy *phy = &dev->phy; |
165 | struct b43_phy_g *gphy = phy->g; |
166 | struct b43_txpower_lo_control *lo = gphy->lo_control; |
167 | u16 reg, mask; |
168 | u16 trsw_rx, pga; |
169 | u16 radio_pctl_reg; |
170 | |
171 | static const u8 tx_bias_values[] = { |
172 | 0x09, 0x08, 0x0A, 0x01, 0x00, |
173 | 0x02, 0x05, 0x04, 0x06, |
174 | }; |
175 | static const u8 tx_magn_values[] = { |
176 | 0x70, 0x40, |
177 | }; |
178 | |
179 | if (!has_loopback_gain(phy)) { |
180 | radio_pctl_reg = 6; |
181 | trsw_rx = 2; |
182 | pga = 0; |
183 | } else { |
184 | int lb_gain; /* Loopback gain (in dB) */ |
185 | |
186 | trsw_rx = 0; |
187 | lb_gain = gphy->max_lb_gain / 2; |
188 | if (lb_gain > 10) { |
189 | radio_pctl_reg = 0; |
190 | pga = abs(10 - lb_gain) / 6; |
191 | pga = clamp_val(pga, 0, 15); |
192 | } else { |
193 | int cmp_val; |
194 | int tmp; |
195 | |
196 | pga = 0; |
197 | cmp_val = 0x24; |
198 | if ((phy->rev >= 2) && |
199 | (phy->radio_ver == 0x2050) && (phy->radio_rev == 8)) |
200 | cmp_val = 0x3C; |
201 | tmp = lb_gain; |
202 | if ((10 - lb_gain) < cmp_val) |
203 | tmp = (10 - lb_gain); |
204 | if (tmp < 0) |
205 | tmp += 6; |
206 | else |
207 | tmp += 3; |
208 | cmp_val /= 4; |
209 | tmp /= 4; |
210 | if (tmp >= cmp_val) |
211 | radio_pctl_reg = cmp_val; |
212 | else |
213 | radio_pctl_reg = tmp; |
214 | } |
215 | } |
216 | b43_radio_maskset(dev, offset: 0x43, mask: 0xFFF0, set: radio_pctl_reg); |
217 | b43_gphy_set_baseband_attenuation(dev, baseband_attenuation: 2); |
218 | |
219 | reg = lo_txctl_register_table(dev, value: &mask, NULL); |
220 | mask = ~mask; |
221 | b43_radio_mask(dev, offset: reg, mask); |
222 | |
223 | if (has_tx_magnification(phy)) { |
224 | int i, j; |
225 | int feedthrough; |
226 | int min_feedth = 0xFFFF; |
227 | u8 tx_magn, tx_bias; |
228 | |
229 | for (i = 0; i < ARRAY_SIZE(tx_magn_values); i++) { |
230 | tx_magn = tx_magn_values[i]; |
231 | b43_radio_maskset(dev, offset: 0x52, mask: 0xFF0F, set: tx_magn); |
232 | for (j = 0; j < ARRAY_SIZE(tx_bias_values); j++) { |
233 | tx_bias = tx_bias_values[j]; |
234 | b43_radio_maskset(dev, offset: 0x52, mask: 0xFFF0, set: tx_bias); |
235 | feedthrough = |
236 | lo_measure_feedthrough(dev, lna: 0, pga, |
237 | trsw_rx); |
238 | if (feedthrough < min_feedth) { |
239 | lo->tx_bias = tx_bias; |
240 | lo->tx_magn = tx_magn; |
241 | min_feedth = feedthrough; |
242 | } |
243 | if (lo->tx_bias == 0) |
244 | break; |
245 | } |
246 | b43_radio_write16(dev, reg: 0x52, |
247 | value: (b43_radio_read16(dev, reg: 0x52) |
248 | & 0xFF00) | lo->tx_bias | lo-> |
249 | tx_magn); |
250 | } |
251 | } else { |
252 | lo->tx_magn = 0; |
253 | lo->tx_bias = 0; |
254 | b43_radio_mask(dev, offset: 0x52, mask: 0xFFF0); /* TX bias == 0 */ |
255 | } |
256 | lo->txctl_measured_time = jiffies; |
257 | } |
258 | |
259 | static void lo_read_power_vector(struct b43_wldev *dev) |
260 | { |
261 | struct b43_phy *phy = &dev->phy; |
262 | struct b43_phy_g *gphy = phy->g; |
263 | struct b43_txpower_lo_control *lo = gphy->lo_control; |
264 | int i; |
265 | u64 tmp; |
266 | u64 power_vector = 0; |
267 | |
268 | for (i = 0; i < 8; i += 2) { |
269 | tmp = b43_shm_read16(dev, routing: B43_SHM_SHARED, offset: 0x310 + i); |
270 | power_vector |= (tmp << (i * 8)); |
271 | /* Clear the vector on the device. */ |
272 | b43_shm_write16(dev, routing: B43_SHM_SHARED, offset: 0x310 + i, value: 0); |
273 | } |
274 | if (power_vector) |
275 | lo->power_vector = power_vector; |
276 | lo->pwr_vec_read_time = jiffies; |
277 | } |
278 | |
279 | /* 802.11/LO/GPHY/MeasuringGains */ |
280 | static void lo_measure_gain_values(struct b43_wldev *dev, |
281 | s16 max_rx_gain, int use_trsw_rx) |
282 | { |
283 | struct b43_phy *phy = &dev->phy; |
284 | struct b43_phy_g *gphy = phy->g; |
285 | u16 tmp; |
286 | |
287 | if (max_rx_gain < 0) |
288 | max_rx_gain = 0; |
289 | |
290 | if (has_loopback_gain(phy)) { |
291 | int trsw_rx_gain; |
292 | |
293 | if (use_trsw_rx) { |
294 | trsw_rx_gain = gphy->trsw_rx_gain / 2; |
295 | if (max_rx_gain >= trsw_rx_gain) { |
296 | trsw_rx_gain = max_rx_gain - trsw_rx_gain; |
297 | } |
298 | } else |
299 | trsw_rx_gain = max_rx_gain; |
300 | if (trsw_rx_gain < 9) { |
301 | gphy->lna_lod_gain = 0; |
302 | } else { |
303 | gphy->lna_lod_gain = 1; |
304 | trsw_rx_gain -= 8; |
305 | } |
306 | trsw_rx_gain = clamp_val(trsw_rx_gain, 0, 0x2D); |
307 | gphy->pga_gain = trsw_rx_gain / 3; |
308 | if (gphy->pga_gain >= 5) { |
309 | gphy->pga_gain -= 5; |
310 | gphy->lna_gain = 2; |
311 | } else |
312 | gphy->lna_gain = 0; |
313 | } else { |
314 | gphy->lna_gain = 0; |
315 | gphy->trsw_rx_gain = 0x20; |
316 | if (max_rx_gain >= 0x14) { |
317 | gphy->lna_lod_gain = 1; |
318 | gphy->pga_gain = 2; |
319 | } else if (max_rx_gain >= 0x12) { |
320 | gphy->lna_lod_gain = 1; |
321 | gphy->pga_gain = 1; |
322 | } else if (max_rx_gain >= 0xF) { |
323 | gphy->lna_lod_gain = 1; |
324 | gphy->pga_gain = 0; |
325 | } else { |
326 | gphy->lna_lod_gain = 0; |
327 | gphy->pga_gain = 0; |
328 | } |
329 | } |
330 | |
331 | tmp = b43_radio_read16(dev, reg: 0x7A); |
332 | if (gphy->lna_lod_gain == 0) |
333 | tmp &= ~0x0008; |
334 | else |
335 | tmp |= 0x0008; |
336 | b43_radio_write16(dev, reg: 0x7A, value: tmp); |
337 | } |
338 | |
339 | struct lo_g_saved_values { |
340 | u8 old_channel; |
341 | |
342 | /* Core registers */ |
343 | u16 reg_3F4; |
344 | u16 reg_3E2; |
345 | |
346 | /* PHY registers */ |
347 | u16 phy_lo_mask; |
348 | u16 phy_extg_01; |
349 | u16 phy_dacctl_hwpctl; |
350 | u16 phy_dacctl; |
351 | u16 phy_cck_14; |
352 | u16 phy_hpwr_tssictl; |
353 | u16 phy_analogover; |
354 | u16 phy_analogoverval; |
355 | u16 phy_rfover; |
356 | u16 phy_rfoverval; |
357 | u16 phy_classctl; |
358 | u16 phy_cck_3E; |
359 | u16 phy_crs0; |
360 | u16 phy_pgactl; |
361 | u16 phy_cck_2A; |
362 | u16 phy_syncctl; |
363 | u16 phy_cck_30; |
364 | u16 phy_cck_06; |
365 | |
366 | /* Radio registers */ |
367 | u16 radio_43; |
368 | u16 radio_7A; |
369 | u16 radio_52; |
370 | }; |
371 | |
372 | static void lo_measure_setup(struct b43_wldev *dev, |
373 | struct lo_g_saved_values *sav) |
374 | { |
375 | struct ssb_sprom *sprom = dev->dev->bus_sprom; |
376 | struct b43_phy *phy = &dev->phy; |
377 | struct b43_phy_g *gphy = phy->g; |
378 | struct b43_txpower_lo_control *lo = gphy->lo_control; |
379 | u16 tmp; |
380 | |
381 | if (b43_has_hardware_pctl(dev)) { |
382 | sav->phy_lo_mask = b43_phy_read(dev, B43_PHY_LO_MASK); |
383 | sav->phy_extg_01 = b43_phy_read(dev, B43_PHY_EXTG(0x01)); |
384 | sav->phy_dacctl_hwpctl = b43_phy_read(dev, B43_PHY_DACCTL); |
385 | sav->phy_cck_14 = b43_phy_read(dev, B43_PHY_CCK(0x14)); |
386 | sav->phy_hpwr_tssictl = b43_phy_read(dev, B43_PHY_HPWR_TSSICTL); |
387 | |
388 | b43_phy_set(dev, B43_PHY_HPWR_TSSICTL, set: 0x100); |
389 | b43_phy_set(dev, B43_PHY_EXTG(0x01), set: 0x40); |
390 | b43_phy_set(dev, B43_PHY_DACCTL, set: 0x40); |
391 | b43_phy_set(dev, B43_PHY_CCK(0x14), set: 0x200); |
392 | } |
393 | if (phy->type == B43_PHYTYPE_B && |
394 | phy->radio_ver == 0x2050 && phy->radio_rev < 6) { |
395 | b43_phy_write(dev, B43_PHY_CCK(0x16), value: 0x410); |
396 | b43_phy_write(dev, B43_PHY_CCK(0x17), value: 0x820); |
397 | } |
398 | if (phy->rev >= 2) { |
399 | sav->phy_analogover = b43_phy_read(dev, B43_PHY_ANALOGOVER); |
400 | sav->phy_analogoverval = |
401 | b43_phy_read(dev, B43_PHY_ANALOGOVERVAL); |
402 | sav->phy_rfover = b43_phy_read(dev, B43_PHY_RFOVER); |
403 | sav->phy_rfoverval = b43_phy_read(dev, B43_PHY_RFOVERVAL); |
404 | sav->phy_classctl = b43_phy_read(dev, B43_PHY_CLASSCTL); |
405 | sav->phy_cck_3E = b43_phy_read(dev, B43_PHY_CCK(0x3E)); |
406 | sav->phy_crs0 = b43_phy_read(dev, B43_PHY_CRS0); |
407 | |
408 | b43_phy_mask(dev, B43_PHY_CLASSCTL, mask: 0xFFFC); |
409 | b43_phy_mask(dev, B43_PHY_CRS0, mask: 0x7FFF); |
410 | b43_phy_set(dev, B43_PHY_ANALOGOVER, set: 0x0003); |
411 | b43_phy_mask(dev, B43_PHY_ANALOGOVERVAL, mask: 0xFFFC); |
412 | if (phy->type == B43_PHYTYPE_G) { |
413 | if ((phy->rev >= 7) && |
414 | (sprom->boardflags_lo & B43_BFL_EXTLNA)) { |
415 | b43_phy_write(dev, B43_PHY_RFOVER, value: 0x933); |
416 | } else { |
417 | b43_phy_write(dev, B43_PHY_RFOVER, value: 0x133); |
418 | } |
419 | } else { |
420 | b43_phy_write(dev, B43_PHY_RFOVER, value: 0); |
421 | } |
422 | b43_phy_write(dev, B43_PHY_CCK(0x3E), value: 0); |
423 | } |
424 | sav->reg_3F4 = b43_read16(dev, offset: 0x3F4); |
425 | sav->reg_3E2 = b43_read16(dev, offset: 0x3E2); |
426 | sav->radio_43 = b43_radio_read16(dev, reg: 0x43); |
427 | sav->radio_7A = b43_radio_read16(dev, reg: 0x7A); |
428 | sav->phy_pgactl = b43_phy_read(dev, B43_PHY_PGACTL); |
429 | sav->phy_cck_2A = b43_phy_read(dev, B43_PHY_CCK(0x2A)); |
430 | sav->phy_syncctl = b43_phy_read(dev, B43_PHY_SYNCCTL); |
431 | sav->phy_dacctl = b43_phy_read(dev, B43_PHY_DACCTL); |
432 | |
433 | if (!has_tx_magnification(phy)) { |
434 | sav->radio_52 = b43_radio_read16(dev, reg: 0x52); |
435 | sav->radio_52 &= 0x00F0; |
436 | } |
437 | if (phy->type == B43_PHYTYPE_B) { |
438 | sav->phy_cck_30 = b43_phy_read(dev, B43_PHY_CCK(0x30)); |
439 | sav->phy_cck_06 = b43_phy_read(dev, B43_PHY_CCK(0x06)); |
440 | b43_phy_write(dev, B43_PHY_CCK(0x30), value: 0x00FF); |
441 | b43_phy_write(dev, B43_PHY_CCK(0x06), value: 0x3F3F); |
442 | } else { |
443 | b43_write16(dev, offset: 0x3E2, value: b43_read16(dev, offset: 0x3E2) |
444 | | 0x8000); |
445 | } |
446 | b43_write16(dev, offset: 0x3F4, value: b43_read16(dev, offset: 0x3F4) |
447 | & 0xF000); |
448 | |
449 | tmp = |
450 | (phy->type == B43_PHYTYPE_G) ? B43_PHY_LO_MASK : B43_PHY_CCK(0x2E); |
451 | b43_phy_write(dev, reg: tmp, value: 0x007F); |
452 | |
453 | tmp = sav->phy_syncctl; |
454 | b43_phy_write(dev, B43_PHY_SYNCCTL, value: tmp & 0xFF7F); |
455 | tmp = sav->radio_7A; |
456 | b43_radio_write16(dev, reg: 0x007A, value: tmp & 0xFFF0); |
457 | |
458 | b43_phy_write(dev, B43_PHY_CCK(0x2A), value: 0x8A3); |
459 | if (phy->type == B43_PHYTYPE_G || |
460 | (phy->type == B43_PHYTYPE_B && |
461 | phy->radio_ver == 0x2050 && phy->radio_rev >= 6)) { |
462 | b43_phy_write(dev, B43_PHY_CCK(0x2B), value: 0x1003); |
463 | } else |
464 | b43_phy_write(dev, B43_PHY_CCK(0x2B), value: 0x0802); |
465 | if (phy->rev >= 2) |
466 | b43_dummy_transmission(dev, ofdm: false, pa_on: true); |
467 | b43_gphy_channel_switch(dev, channel: 6, synthetic_pu_workaround: 0); |
468 | b43_radio_read16(dev, reg: 0x51); /* dummy read */ |
469 | if (phy->type == B43_PHYTYPE_G) |
470 | b43_phy_write(dev, B43_PHY_CCK(0x2F), value: 0); |
471 | |
472 | /* Re-measure the txctl values, if needed. */ |
473 | if (time_before(lo->txctl_measured_time, |
474 | jiffies - B43_LO_TXCTL_EXPIRE)) |
475 | lo_measure_txctl_values(dev); |
476 | |
477 | if (phy->type == B43_PHYTYPE_G && phy->rev >= 3) { |
478 | b43_phy_write(dev, B43_PHY_LO_MASK, value: 0xC078); |
479 | } else { |
480 | if (phy->type == B43_PHYTYPE_B) |
481 | b43_phy_write(dev, B43_PHY_CCK(0x2E), value: 0x8078); |
482 | else |
483 | b43_phy_write(dev, B43_PHY_LO_MASK, value: 0x8078); |
484 | } |
485 | } |
486 | |
487 | static void lo_measure_restore(struct b43_wldev *dev, |
488 | struct lo_g_saved_values *sav) |
489 | { |
490 | struct b43_phy *phy = &dev->phy; |
491 | struct b43_phy_g *gphy = phy->g; |
492 | u16 tmp; |
493 | |
494 | if (phy->rev >= 2) { |
495 | b43_phy_write(dev, B43_PHY_PGACTL, value: 0xE300); |
496 | tmp = (gphy->pga_gain << 8); |
497 | b43_phy_write(dev, B43_PHY_RFOVERVAL, value: tmp | 0xA0); |
498 | udelay(5); |
499 | b43_phy_write(dev, B43_PHY_RFOVERVAL, value: tmp | 0xA2); |
500 | udelay(2); |
501 | b43_phy_write(dev, B43_PHY_RFOVERVAL, value: tmp | 0xA3); |
502 | } else { |
503 | tmp = (gphy->pga_gain | 0xEFA0); |
504 | b43_phy_write(dev, B43_PHY_PGACTL, value: tmp); |
505 | } |
506 | if (phy->type == B43_PHYTYPE_G) { |
507 | if (phy->rev >= 3) |
508 | b43_phy_write(dev, B43_PHY_CCK(0x2E), value: 0xC078); |
509 | else |
510 | b43_phy_write(dev, B43_PHY_CCK(0x2E), value: 0x8078); |
511 | if (phy->rev >= 2) |
512 | b43_phy_write(dev, B43_PHY_CCK(0x2F), value: 0x0202); |
513 | else |
514 | b43_phy_write(dev, B43_PHY_CCK(0x2F), value: 0x0101); |
515 | } |
516 | b43_write16(dev, offset: 0x3F4, value: sav->reg_3F4); |
517 | b43_phy_write(dev, B43_PHY_PGACTL, value: sav->phy_pgactl); |
518 | b43_phy_write(dev, B43_PHY_CCK(0x2A), value: sav->phy_cck_2A); |
519 | b43_phy_write(dev, B43_PHY_SYNCCTL, value: sav->phy_syncctl); |
520 | b43_phy_write(dev, B43_PHY_DACCTL, value: sav->phy_dacctl); |
521 | b43_radio_write16(dev, reg: 0x43, value: sav->radio_43); |
522 | b43_radio_write16(dev, reg: 0x7A, value: sav->radio_7A); |
523 | if (!has_tx_magnification(phy)) { |
524 | tmp = sav->radio_52; |
525 | b43_radio_maskset(dev, offset: 0x52, mask: 0xFF0F, set: tmp); |
526 | } |
527 | b43_write16(dev, offset: 0x3E2, value: sav->reg_3E2); |
528 | if (phy->type == B43_PHYTYPE_B && |
529 | phy->radio_ver == 0x2050 && phy->radio_rev <= 5) { |
530 | b43_phy_write(dev, B43_PHY_CCK(0x30), value: sav->phy_cck_30); |
531 | b43_phy_write(dev, B43_PHY_CCK(0x06), value: sav->phy_cck_06); |
532 | } |
533 | if (phy->rev >= 2) { |
534 | b43_phy_write(dev, B43_PHY_ANALOGOVER, value: sav->phy_analogover); |
535 | b43_phy_write(dev, B43_PHY_ANALOGOVERVAL, |
536 | value: sav->phy_analogoverval); |
537 | b43_phy_write(dev, B43_PHY_CLASSCTL, value: sav->phy_classctl); |
538 | b43_phy_write(dev, B43_PHY_RFOVER, value: sav->phy_rfover); |
539 | b43_phy_write(dev, B43_PHY_RFOVERVAL, value: sav->phy_rfoverval); |
540 | b43_phy_write(dev, B43_PHY_CCK(0x3E), value: sav->phy_cck_3E); |
541 | b43_phy_write(dev, B43_PHY_CRS0, value: sav->phy_crs0); |
542 | } |
543 | if (b43_has_hardware_pctl(dev)) { |
544 | tmp = (sav->phy_lo_mask & 0xBFFF); |
545 | b43_phy_write(dev, B43_PHY_LO_MASK, value: tmp); |
546 | b43_phy_write(dev, B43_PHY_EXTG(0x01), value: sav->phy_extg_01); |
547 | b43_phy_write(dev, B43_PHY_DACCTL, value: sav->phy_dacctl_hwpctl); |
548 | b43_phy_write(dev, B43_PHY_CCK(0x14), value: sav->phy_cck_14); |
549 | b43_phy_write(dev, B43_PHY_HPWR_TSSICTL, value: sav->phy_hpwr_tssictl); |
550 | } |
551 | b43_gphy_channel_switch(dev, channel: sav->old_channel, synthetic_pu_workaround: 1); |
552 | } |
553 | |
554 | struct b43_lo_g_statemachine { |
555 | int current_state; |
556 | int nr_measured; |
557 | int state_val_multiplier; |
558 | u16 lowest_feedth; |
559 | struct b43_loctl min_loctl; |
560 | }; |
561 | |
562 | /* Loop over each possible value in this state. */ |
563 | static int lo_probe_possible_loctls(struct b43_wldev *dev, |
564 | struct b43_loctl *probe_loctl, |
565 | struct b43_lo_g_statemachine *d) |
566 | { |
567 | struct b43_phy *phy = &dev->phy; |
568 | struct b43_phy_g *gphy = phy->g; |
569 | struct b43_loctl test_loctl; |
570 | struct b43_loctl orig_loctl; |
571 | struct b43_loctl prev_loctl = { |
572 | .i = -100, |
573 | .q = -100, |
574 | }; |
575 | int i; |
576 | int begin, end; |
577 | int found_lower = 0; |
578 | u16 feedth; |
579 | |
580 | static const struct b43_loctl modifiers[] = { |
581 | {.i = 1,.q = 1,}, |
582 | {.i = 1,.q = 0,}, |
583 | {.i = 1,.q = -1,}, |
584 | {.i = 0,.q = -1,}, |
585 | {.i = -1,.q = -1,}, |
586 | {.i = -1,.q = 0,}, |
587 | {.i = -1,.q = 1,}, |
588 | {.i = 0,.q = 1,}, |
589 | }; |
590 | |
591 | if (d->current_state == 0) { |
592 | begin = 1; |
593 | end = 8; |
594 | } else if (d->current_state % 2 == 0) { |
595 | begin = d->current_state - 1; |
596 | end = d->current_state + 1; |
597 | } else { |
598 | begin = d->current_state - 2; |
599 | end = d->current_state + 2; |
600 | } |
601 | if (begin < 1) |
602 | begin += 8; |
603 | if (end > 8) |
604 | end -= 8; |
605 | |
606 | memcpy(&orig_loctl, probe_loctl, sizeof(struct b43_loctl)); |
607 | i = begin; |
608 | d->current_state = i; |
609 | while (1) { |
610 | B43_WARN_ON(!(i >= 1 && i <= 8)); |
611 | memcpy(&test_loctl, &orig_loctl, sizeof(struct b43_loctl)); |
612 | test_loctl.i += modifiers[i - 1].i * d->state_val_multiplier; |
613 | test_loctl.q += modifiers[i - 1].q * d->state_val_multiplier; |
614 | if ((test_loctl.i != prev_loctl.i || |
615 | test_loctl.q != prev_loctl.q) && |
616 | (abs(test_loctl.i) <= 16 && abs(test_loctl.q) <= 16)) { |
617 | b43_lo_write(dev, control: &test_loctl); |
618 | feedth = lo_measure_feedthrough(dev, lna: gphy->lna_gain, |
619 | pga: gphy->pga_gain, |
620 | trsw_rx: gphy->trsw_rx_gain); |
621 | if (feedth < d->lowest_feedth) { |
622 | memcpy(probe_loctl, &test_loctl, |
623 | sizeof(struct b43_loctl)); |
624 | found_lower = 1; |
625 | d->lowest_feedth = feedth; |
626 | if ((d->nr_measured < 2) && |
627 | !has_loopback_gain(phy)) |
628 | break; |
629 | } |
630 | } |
631 | memcpy(&prev_loctl, &test_loctl, sizeof(prev_loctl)); |
632 | if (i == end) |
633 | break; |
634 | if (i == 8) |
635 | i = 1; |
636 | else |
637 | i++; |
638 | d->current_state = i; |
639 | } |
640 | |
641 | return found_lower; |
642 | } |
643 | |
644 | static void lo_probe_loctls_statemachine(struct b43_wldev *dev, |
645 | struct b43_loctl *loctl, |
646 | int *max_rx_gain) |
647 | { |
648 | struct b43_phy *phy = &dev->phy; |
649 | struct b43_phy_g *gphy = phy->g; |
650 | struct b43_lo_g_statemachine d; |
651 | u16 feedth; |
652 | int found_lower; |
653 | struct b43_loctl probe_loctl; |
654 | int max_repeat = 1, repeat_cnt = 0; |
655 | |
656 | d.nr_measured = 0; |
657 | d.state_val_multiplier = 1; |
658 | if (has_loopback_gain(phy)) |
659 | d.state_val_multiplier = 3; |
660 | |
661 | memcpy(&d.min_loctl, loctl, sizeof(struct b43_loctl)); |
662 | if (has_loopback_gain(phy)) |
663 | max_repeat = 4; |
664 | do { |
665 | b43_lo_write(dev, control: &d.min_loctl); |
666 | feedth = lo_measure_feedthrough(dev, lna: gphy->lna_gain, |
667 | pga: gphy->pga_gain, |
668 | trsw_rx: gphy->trsw_rx_gain); |
669 | if (feedth < 0x258) { |
670 | if (feedth >= 0x12C) |
671 | *max_rx_gain += 6; |
672 | else |
673 | *max_rx_gain += 3; |
674 | feedth = lo_measure_feedthrough(dev, lna: gphy->lna_gain, |
675 | pga: gphy->pga_gain, |
676 | trsw_rx: gphy->trsw_rx_gain); |
677 | } |
678 | d.lowest_feedth = feedth; |
679 | |
680 | d.current_state = 0; |
681 | do { |
682 | B43_WARN_ON(! |
683 | (d.current_state >= 0 |
684 | && d.current_state <= 8)); |
685 | memcpy(&probe_loctl, &d.min_loctl, |
686 | sizeof(struct b43_loctl)); |
687 | found_lower = |
688 | lo_probe_possible_loctls(dev, probe_loctl: &probe_loctl, d: &d); |
689 | if (!found_lower) |
690 | break; |
691 | if ((probe_loctl.i == d.min_loctl.i) && |
692 | (probe_loctl.q == d.min_loctl.q)) |
693 | break; |
694 | memcpy(&d.min_loctl, &probe_loctl, |
695 | sizeof(struct b43_loctl)); |
696 | d.nr_measured++; |
697 | } while (d.nr_measured < 24); |
698 | memcpy(loctl, &d.min_loctl, sizeof(struct b43_loctl)); |
699 | |
700 | if (has_loopback_gain(phy)) { |
701 | if (d.lowest_feedth > 0x1194) |
702 | *max_rx_gain -= 6; |
703 | else if (d.lowest_feedth < 0x5DC) |
704 | *max_rx_gain += 3; |
705 | if (repeat_cnt == 0) { |
706 | if (d.lowest_feedth <= 0x5DC) { |
707 | d.state_val_multiplier = 1; |
708 | repeat_cnt++; |
709 | } else |
710 | d.state_val_multiplier = 2; |
711 | } else if (repeat_cnt == 2) |
712 | d.state_val_multiplier = 1; |
713 | } |
714 | lo_measure_gain_values(dev, max_rx_gain: *max_rx_gain, |
715 | has_loopback_gain(phy)); |
716 | } while (++repeat_cnt < max_repeat); |
717 | } |
718 | |
719 | static |
720 | struct b43_lo_calib *b43_calibrate_lo_setting(struct b43_wldev *dev, |
721 | const struct b43_bbatt *bbatt, |
722 | const struct b43_rfatt *rfatt) |
723 | { |
724 | struct b43_phy *phy = &dev->phy; |
725 | struct b43_phy_g *gphy = phy->g; |
726 | struct b43_loctl loctl = { |
727 | .i = 0, |
728 | .q = 0, |
729 | }; |
730 | int max_rx_gain; |
731 | struct b43_lo_calib *cal; |
732 | struct lo_g_saved_values saved_regs; |
733 | /* Values from the "TXCTL Register and Value Table" */ |
734 | u16 txctl_reg; |
735 | u16 txctl_value; |
736 | u16 pad_mix_gain; |
737 | |
738 | saved_regs.old_channel = phy->channel; |
739 | b43_mac_suspend(dev); |
740 | lo_measure_setup(dev, sav: &saved_regs); |
741 | |
742 | txctl_reg = lo_txctl_register_table(dev, value: &txctl_value, pad_mix_gain: &pad_mix_gain); |
743 | |
744 | b43_radio_maskset(dev, offset: 0x43, mask: 0xFFF0, set: rfatt->att); |
745 | b43_radio_maskset(dev, offset: txctl_reg, mask: ~txctl_value, set: (rfatt->with_padmix ? txctl_value :0)); |
746 | |
747 | max_rx_gain = rfatt->att * 2; |
748 | max_rx_gain += bbatt->att / 2; |
749 | if (rfatt->with_padmix) |
750 | max_rx_gain -= pad_mix_gain; |
751 | if (has_loopback_gain(phy)) |
752 | max_rx_gain += gphy->max_lb_gain; |
753 | lo_measure_gain_values(dev, max_rx_gain, |
754 | has_loopback_gain(phy)); |
755 | |
756 | b43_gphy_set_baseband_attenuation(dev, baseband_attenuation: bbatt->att); |
757 | lo_probe_loctls_statemachine(dev, loctl: &loctl, max_rx_gain: &max_rx_gain); |
758 | |
759 | lo_measure_restore(dev, sav: &saved_regs); |
760 | b43_mac_enable(dev); |
761 | |
762 | if (b43_debug(dev, feature: B43_DBG_LO)) { |
763 | b43dbg(wl: dev->wl, fmt: "LO: Calibrated for BB(%u), RF(%u,%u) " |
764 | "=> I=%d Q=%d\n" , |
765 | bbatt->att, rfatt->att, rfatt->with_padmix, |
766 | loctl.i, loctl.q); |
767 | } |
768 | |
769 | cal = kmalloc(size: sizeof(*cal), GFP_KERNEL); |
770 | if (!cal) { |
771 | b43warn(wl: dev->wl, fmt: "LO calib: out of memory\n" ); |
772 | return NULL; |
773 | } |
774 | memcpy(&cal->bbatt, bbatt, sizeof(*bbatt)); |
775 | memcpy(&cal->rfatt, rfatt, sizeof(*rfatt)); |
776 | memcpy(&cal->ctl, &loctl, sizeof(loctl)); |
777 | cal->calib_time = jiffies; |
778 | INIT_LIST_HEAD(list: &cal->list); |
779 | |
780 | return cal; |
781 | } |
782 | |
783 | /* Get a calibrated LO setting for the given attenuation values. |
784 | * Might return a NULL pointer under OOM! */ |
785 | static |
786 | struct b43_lo_calib *b43_get_calib_lo_settings(struct b43_wldev *dev, |
787 | const struct b43_bbatt *bbatt, |
788 | const struct b43_rfatt *rfatt) |
789 | { |
790 | struct b43_txpower_lo_control *lo = dev->phy.g->lo_control; |
791 | struct b43_lo_calib *c; |
792 | |
793 | c = b43_find_lo_calib(lo, bbatt, rfatt); |
794 | if (c) |
795 | return c; |
796 | /* Not in the list of calibrated LO settings. |
797 | * Calibrate it now. */ |
798 | c = b43_calibrate_lo_setting(dev, bbatt, rfatt); |
799 | if (!c) |
800 | return NULL; |
801 | list_add(new: &c->list, head: &lo->calib_list); |
802 | |
803 | return c; |
804 | } |
805 | |
806 | void b43_gphy_dc_lt_init(struct b43_wldev *dev, bool update_all) |
807 | { |
808 | struct b43_phy *phy = &dev->phy; |
809 | struct b43_phy_g *gphy = phy->g; |
810 | struct b43_txpower_lo_control *lo = gphy->lo_control; |
811 | int i; |
812 | int rf_offset, bb_offset; |
813 | const struct b43_rfatt *rfatt; |
814 | const struct b43_bbatt *bbatt; |
815 | u64 power_vector; |
816 | bool table_changed = false; |
817 | |
818 | BUILD_BUG_ON(B43_DC_LT_SIZE != 32); |
819 | B43_WARN_ON(lo->rfatt_list.len * lo->bbatt_list.len > 64); |
820 | |
821 | power_vector = lo->power_vector; |
822 | if (!update_all && !power_vector) |
823 | return; /* Nothing to do. */ |
824 | |
825 | /* Suspend the MAC now to avoid continuous suspend/enable |
826 | * cycles in the loop. */ |
827 | b43_mac_suspend(dev); |
828 | |
829 | for (i = 0; i < B43_DC_LT_SIZE * 2; i++) { |
830 | struct b43_lo_calib *cal; |
831 | int idx; |
832 | u16 val; |
833 | |
834 | if (!update_all && !(power_vector & (((u64)1ULL) << i))) |
835 | continue; |
836 | /* Update the table entry for this power_vector bit. |
837 | * The table rows are RFatt entries and columns are BBatt. */ |
838 | bb_offset = i / lo->rfatt_list.len; |
839 | rf_offset = i % lo->rfatt_list.len; |
840 | bbatt = &(lo->bbatt_list.list[bb_offset]); |
841 | rfatt = &(lo->rfatt_list.list[rf_offset]); |
842 | |
843 | cal = b43_calibrate_lo_setting(dev, bbatt, rfatt); |
844 | if (!cal) { |
845 | b43warn(wl: dev->wl, fmt: "LO: Could not " |
846 | "calibrate DC table entry\n" ); |
847 | continue; |
848 | } |
849 | /*FIXME: Is Q really in the low nibble? */ |
850 | val = (u8)(cal->ctl.q); |
851 | val |= ((u8)(cal->ctl.i)) << 4; |
852 | kfree(objp: cal); |
853 | |
854 | /* Get the index into the hardware DC LT. */ |
855 | idx = i / 2; |
856 | /* Change the table in memory. */ |
857 | if (i % 2) { |
858 | /* Change the high byte. */ |
859 | lo->dc_lt[idx] = (lo->dc_lt[idx] & 0x00FF) |
860 | | ((val & 0x00FF) << 8); |
861 | } else { |
862 | /* Change the low byte. */ |
863 | lo->dc_lt[idx] = (lo->dc_lt[idx] & 0xFF00) |
864 | | (val & 0x00FF); |
865 | } |
866 | table_changed = true; |
867 | } |
868 | if (table_changed) { |
869 | /* The table changed in memory. Update the hardware table. */ |
870 | for (i = 0; i < B43_DC_LT_SIZE; i++) |
871 | b43_phy_write(dev, reg: 0x3A0 + i, value: lo->dc_lt[i]); |
872 | } |
873 | b43_mac_enable(dev); |
874 | } |
875 | |
876 | /* Fixup the RF attenuation value for the case where we are |
877 | * using the PAD mixer. */ |
878 | static inline void b43_lo_fixup_rfatt(struct b43_rfatt *rf) |
879 | { |
880 | if (!rf->with_padmix) |
881 | return; |
882 | if ((rf->att != 1) && (rf->att != 2) && (rf->att != 3)) |
883 | rf->att = 4; |
884 | } |
885 | |
886 | void b43_lo_g_adjust(struct b43_wldev *dev) |
887 | { |
888 | struct b43_phy_g *gphy = dev->phy.g; |
889 | struct b43_lo_calib *cal; |
890 | struct b43_rfatt rf; |
891 | |
892 | memcpy(&rf, &gphy->rfatt, sizeof(rf)); |
893 | b43_lo_fixup_rfatt(rf: &rf); |
894 | |
895 | cal = b43_get_calib_lo_settings(dev, bbatt: &gphy->bbatt, rfatt: &rf); |
896 | if (!cal) |
897 | return; |
898 | b43_lo_write(dev, control: &cal->ctl); |
899 | } |
900 | |
901 | void b43_lo_g_adjust_to(struct b43_wldev *dev, |
902 | u16 rfatt, u16 bbatt, u16 tx_control) |
903 | { |
904 | struct b43_rfatt rf; |
905 | struct b43_bbatt bb; |
906 | struct b43_lo_calib *cal; |
907 | |
908 | memset(&rf, 0, sizeof(rf)); |
909 | memset(&bb, 0, sizeof(bb)); |
910 | rf.att = rfatt; |
911 | bb.att = bbatt; |
912 | b43_lo_fixup_rfatt(rf: &rf); |
913 | cal = b43_get_calib_lo_settings(dev, bbatt: &bb, rfatt: &rf); |
914 | if (!cal) |
915 | return; |
916 | b43_lo_write(dev, control: &cal->ctl); |
917 | } |
918 | |
919 | /* Periodic LO maintenance work */ |
920 | void b43_lo_g_maintenance_work(struct b43_wldev *dev) |
921 | { |
922 | struct b43_phy *phy = &dev->phy; |
923 | struct b43_phy_g *gphy = phy->g; |
924 | struct b43_txpower_lo_control *lo = gphy->lo_control; |
925 | unsigned long now; |
926 | unsigned long expire; |
927 | struct b43_lo_calib *cal, *tmp; |
928 | bool current_item_expired = false; |
929 | bool hwpctl; |
930 | |
931 | if (!lo) |
932 | return; |
933 | now = jiffies; |
934 | hwpctl = b43_has_hardware_pctl(dev); |
935 | |
936 | if (hwpctl) { |
937 | /* Read the power vector and update it, if needed. */ |
938 | expire = now - B43_LO_PWRVEC_EXPIRE; |
939 | if (time_before(lo->pwr_vec_read_time, expire)) { |
940 | lo_read_power_vector(dev); |
941 | b43_gphy_dc_lt_init(dev, update_all: 0); |
942 | } |
943 | //FIXME Recalc the whole DC table from time to time? |
944 | } |
945 | |
946 | if (hwpctl) |
947 | return; |
948 | /* Search for expired LO settings. Remove them. |
949 | * Recalibrate the current setting, if expired. */ |
950 | expire = now - B43_LO_CALIB_EXPIRE; |
951 | list_for_each_entry_safe(cal, tmp, &lo->calib_list, list) { |
952 | if (!time_before(cal->calib_time, expire)) |
953 | continue; |
954 | /* This item expired. */ |
955 | if (b43_compare_bbatt(a: &cal->bbatt, b: &gphy->bbatt) && |
956 | b43_compare_rfatt(a: &cal->rfatt, b: &gphy->rfatt)) { |
957 | B43_WARN_ON(current_item_expired); |
958 | current_item_expired = true; |
959 | } |
960 | if (b43_debug(dev, feature: B43_DBG_LO)) { |
961 | b43dbg(wl: dev->wl, fmt: "LO: Item BB(%u), RF(%u,%u), " |
962 | "I=%d, Q=%d expired\n" , |
963 | cal->bbatt.att, cal->rfatt.att, |
964 | cal->rfatt.with_padmix, |
965 | cal->ctl.i, cal->ctl.q); |
966 | } |
967 | list_del(entry: &cal->list); |
968 | kfree(objp: cal); |
969 | } |
970 | if (current_item_expired || unlikely(list_empty(&lo->calib_list))) { |
971 | /* Recalibrate currently used LO setting. */ |
972 | if (b43_debug(dev, feature: B43_DBG_LO)) |
973 | b43dbg(wl: dev->wl, fmt: "LO: Recalibrating current LO setting\n" ); |
974 | cal = b43_calibrate_lo_setting(dev, bbatt: &gphy->bbatt, rfatt: &gphy->rfatt); |
975 | if (cal) { |
976 | list_add(new: &cal->list, head: &lo->calib_list); |
977 | b43_lo_write(dev, control: &cal->ctl); |
978 | } else |
979 | b43warn(wl: dev->wl, fmt: "Failed to recalibrate current LO setting\n" ); |
980 | } |
981 | } |
982 | |
983 | void b43_lo_g_cleanup(struct b43_wldev *dev) |
984 | { |
985 | struct b43_txpower_lo_control *lo = dev->phy.g->lo_control; |
986 | struct b43_lo_calib *cal, *tmp; |
987 | |
988 | if (!lo) |
989 | return; |
990 | list_for_each_entry_safe(cal, tmp, &lo->calib_list, list) { |
991 | list_del(entry: &cal->list); |
992 | kfree(objp: cal); |
993 | } |
994 | } |
995 | |
996 | /* LO Initialization */ |
997 | void b43_lo_g_init(struct b43_wldev *dev) |
998 | { |
999 | if (b43_has_hardware_pctl(dev)) { |
1000 | lo_read_power_vector(dev); |
1001 | b43_gphy_dc_lt_init(dev, update_all: 1); |
1002 | } |
1003 | } |
1004 | |