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e4d6b795 MB |
1 | /* |
2 | ||
3 | Broadcom B43 wireless driver | |
4 | ||
5 | G PHY LO (LocalOscillator) Measuring and Control routines | |
6 | ||
7 | Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>, | |
8 | Copyright (c) 2005, 2006 Stefano Brivio <st3@riseup.net> | |
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> | |
12 | ||
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. | |
17 | ||
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. | |
22 | ||
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. | |
27 | ||
28 | */ | |
29 | ||
30 | #include "b43.h" | |
31 | #include "lo.h" | |
32 | #include "phy.h" | |
33 | #include "main.h" | |
34 | ||
35 | #include <linux/delay.h> | |
36 | #include <linux/sched.h> | |
37 | ||
38 | ||
39 | /* Define to 1 to always calibrate all possible LO control pairs. | |
40 | * This is a workaround until we fix the partial LO calibration optimization. */ | |
41 | #define B43_CALIB_ALL_LOCTLS 1 | |
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 | u16 reg; | |
50 | ||
51 | if (B43_DEBUG) { | |
52 | if (unlikely(abs(control->i) > 16 || abs(control->q) > 16)) { | |
53 | b43dbg(dev->wl, "Invalid LO control pair " | |
54 | "(I: %d, Q: %d)\n", control->i, control->q); | |
55 | dump_stack(); | |
56 | return; | |
57 | } | |
58 | } | |
59 | ||
60 | value = (u8) (control->q); | |
61 | value |= ((u8) (control->i)) << 8; | |
62 | ||
63 | reg = (phy->type == B43_PHYTYPE_B) ? 0x002F : B43_PHY_LO_CTL; | |
64 | b43_phy_write(dev, reg, value); | |
65 | } | |
66 | ||
67 | static int assert_rfatt_and_bbatt(const struct b43_rfatt *rfatt, | |
68 | const struct b43_bbatt *bbatt, | |
69 | struct b43_wldev *dev) | |
70 | { | |
71 | int err = 0; | |
72 | ||
73 | /* Check the attenuation values against the LO control array sizes. */ | |
74 | if (unlikely(rfatt->att >= B43_NR_RF)) { | |
75 | b43err(dev->wl, "rfatt(%u) >= size of LO array\n", rfatt->att); | |
76 | err = -EINVAL; | |
77 | } | |
78 | if (unlikely(bbatt->att >= B43_NR_BB)) { | |
79 | b43err(dev->wl, "bbatt(%u) >= size of LO array\n", bbatt->att); | |
80 | err = -EINVAL; | |
81 | } | |
82 | ||
83 | return err; | |
84 | } | |
85 | ||
86 | #if !B43_CALIB_ALL_LOCTLS | |
87 | static | |
88 | struct b43_loctl *b43_get_lo_g_ctl_nopadmix(struct b43_wldev *dev, | |
89 | const struct b43_rfatt *rfatt, | |
90 | const struct b43_bbatt *bbatt) | |
91 | { | |
92 | struct b43_phy *phy = &dev->phy; | |
93 | struct b43_txpower_lo_control *lo = phy->lo_control; | |
94 | ||
95 | if (assert_rfatt_and_bbatt(rfatt, bbatt, dev)) | |
96 | return &(lo->no_padmix[0][0]); /* Just prevent a crash */ | |
97 | return &(lo->no_padmix[bbatt->att][rfatt->att]); | |
98 | } | |
99 | #endif /* !B43_CALIB_ALL_LOCTLS */ | |
100 | ||
101 | struct b43_loctl *b43_get_lo_g_ctl(struct b43_wldev *dev, | |
102 | const struct b43_rfatt *rfatt, | |
103 | const struct b43_bbatt *bbatt) | |
104 | { | |
105 | struct b43_phy *phy = &dev->phy; | |
106 | struct b43_txpower_lo_control *lo = phy->lo_control; | |
107 | ||
108 | if (assert_rfatt_and_bbatt(rfatt, bbatt, dev)) | |
109 | return &(lo->no_padmix[0][0]); /* Just prevent a crash */ | |
110 | if (rfatt->with_padmix) | |
111 | return &(lo->with_padmix[bbatt->att][rfatt->att]); | |
112 | return &(lo->no_padmix[bbatt->att][rfatt->att]); | |
113 | } | |
114 | ||
115 | /* Call a function for every possible LO control value-pair. */ | |
116 | static void b43_call_for_each_loctl(struct b43_wldev *dev, | |
117 | void (*func) (struct b43_wldev *, | |
118 | struct b43_loctl *)) | |
119 | { | |
120 | struct b43_phy *phy = &dev->phy; | |
121 | struct b43_txpower_lo_control *ctl = phy->lo_control; | |
122 | int i, j; | |
123 | ||
124 | for (i = 0; i < B43_NR_BB; i++) { | |
125 | for (j = 0; j < B43_NR_RF; j++) | |
126 | func(dev, &(ctl->with_padmix[i][j])); | |
127 | } | |
128 | for (i = 0; i < B43_NR_BB; i++) { | |
129 | for (j = 0; j < B43_NR_RF; j++) | |
130 | func(dev, &(ctl->no_padmix[i][j])); | |
131 | } | |
132 | } | |
133 | ||
134 | static u16 lo_b_r15_loop(struct b43_wldev *dev) | |
135 | { | |
136 | int i; | |
137 | u16 ret = 0; | |
138 | ||
139 | for (i = 0; i < 10; i++) { | |
140 | b43_phy_write(dev, 0x0015, 0xAFA0); | |
141 | udelay(1); | |
142 | b43_phy_write(dev, 0x0015, 0xEFA0); | |
143 | udelay(10); | |
144 | b43_phy_write(dev, 0x0015, 0xFFA0); | |
145 | udelay(40); | |
146 | ret += b43_phy_read(dev, 0x002C); | |
147 | } | |
148 | ||
149 | return ret; | |
150 | } | |
151 | ||
152 | void b43_lo_b_measure(struct b43_wldev *dev) | |
153 | { | |
154 | struct b43_phy *phy = &dev->phy; | |
155 | u16 regstack[12] = { 0 }; | |
156 | u16 mls; | |
157 | u16 fval; | |
158 | int i, j; | |
159 | ||
160 | regstack[0] = b43_phy_read(dev, 0x0015); | |
161 | regstack[1] = b43_radio_read16(dev, 0x0052) & 0xFFF0; | |
162 | ||
163 | if (phy->radio_ver == 0x2053) { | |
164 | regstack[2] = b43_phy_read(dev, 0x000A); | |
165 | regstack[3] = b43_phy_read(dev, 0x002A); | |
166 | regstack[4] = b43_phy_read(dev, 0x0035); | |
167 | regstack[5] = b43_phy_read(dev, 0x0003); | |
168 | regstack[6] = b43_phy_read(dev, 0x0001); | |
169 | regstack[7] = b43_phy_read(dev, 0x0030); | |
170 | ||
171 | regstack[8] = b43_radio_read16(dev, 0x0043); | |
172 | regstack[9] = b43_radio_read16(dev, 0x007A); | |
173 | regstack[10] = b43_read16(dev, 0x03EC); | |
174 | regstack[11] = b43_radio_read16(dev, 0x0052) & 0x00F0; | |
175 | ||
176 | b43_phy_write(dev, 0x0030, 0x00FF); | |
177 | b43_write16(dev, 0x03EC, 0x3F3F); | |
178 | b43_phy_write(dev, 0x0035, regstack[4] & 0xFF7F); | |
179 | b43_radio_write16(dev, 0x007A, regstack[9] & 0xFFF0); | |
180 | } | |
181 | b43_phy_write(dev, 0x0015, 0xB000); | |
182 | b43_phy_write(dev, 0x002B, 0x0004); | |
183 | ||
184 | if (phy->radio_ver == 0x2053) { | |
185 | b43_phy_write(dev, 0x002B, 0x0203); | |
186 | b43_phy_write(dev, 0x002A, 0x08A3); | |
187 | } | |
188 | ||
189 | phy->minlowsig[0] = 0xFFFF; | |
190 | ||
191 | for (i = 0; i < 4; i++) { | |
192 | b43_radio_write16(dev, 0x0052, regstack[1] | i); | |
193 | lo_b_r15_loop(dev); | |
194 | } | |
195 | for (i = 0; i < 10; i++) { | |
196 | b43_radio_write16(dev, 0x0052, regstack[1] | i); | |
197 | mls = lo_b_r15_loop(dev) / 10; | |
198 | if (mls < phy->minlowsig[0]) { | |
199 | phy->minlowsig[0] = mls; | |
200 | phy->minlowsigpos[0] = i; | |
201 | } | |
202 | } | |
203 | b43_radio_write16(dev, 0x0052, regstack[1] | phy->minlowsigpos[0]); | |
204 | ||
205 | phy->minlowsig[1] = 0xFFFF; | |
206 | ||
207 | for (i = -4; i < 5; i += 2) { | |
208 | for (j = -4; j < 5; j += 2) { | |
209 | if (j < 0) | |
210 | fval = (0x0100 * i) + j + 0x0100; | |
211 | else | |
212 | fval = (0x0100 * i) + j; | |
213 | b43_phy_write(dev, 0x002F, fval); | |
214 | mls = lo_b_r15_loop(dev) / 10; | |
215 | if (mls < phy->minlowsig[1]) { | |
216 | phy->minlowsig[1] = mls; | |
217 | phy->minlowsigpos[1] = fval; | |
218 | } | |
219 | } | |
220 | } | |
221 | phy->minlowsigpos[1] += 0x0101; | |
222 | ||
223 | b43_phy_write(dev, 0x002F, phy->minlowsigpos[1]); | |
224 | if (phy->radio_ver == 0x2053) { | |
225 | b43_phy_write(dev, 0x000A, regstack[2]); | |
226 | b43_phy_write(dev, 0x002A, regstack[3]); | |
227 | b43_phy_write(dev, 0x0035, regstack[4]); | |
228 | b43_phy_write(dev, 0x0003, regstack[5]); | |
229 | b43_phy_write(dev, 0x0001, regstack[6]); | |
230 | b43_phy_write(dev, 0x0030, regstack[7]); | |
231 | ||
232 | b43_radio_write16(dev, 0x0043, regstack[8]); | |
233 | b43_radio_write16(dev, 0x007A, regstack[9]); | |
234 | ||
235 | b43_radio_write16(dev, 0x0052, | |
236 | (b43_radio_read16(dev, 0x0052) & 0x000F) | |
237 | | regstack[11]); | |
238 | ||
239 | b43_write16(dev, 0x03EC, regstack[10]); | |
240 | } | |
241 | b43_phy_write(dev, 0x0015, regstack[0]); | |
242 | } | |
243 | ||
244 | static u16 lo_measure_feedthrough(struct b43_wldev *dev, | |
245 | u16 lna, u16 pga, u16 trsw_rx) | |
246 | { | |
247 | struct b43_phy *phy = &dev->phy; | |
248 | u16 rfover; | |
249 | u16 feedthrough; | |
250 | ||
251 | if (phy->gmode) { | |
252 | lna <<= B43_PHY_RFOVERVAL_LNA_SHIFT; | |
253 | pga <<= B43_PHY_RFOVERVAL_PGA_SHIFT; | |
254 | ||
255 | B43_WARN_ON(lna & ~B43_PHY_RFOVERVAL_LNA); | |
256 | B43_WARN_ON(pga & ~B43_PHY_RFOVERVAL_PGA); | |
257 | /*FIXME This assertion fails B43_WARN_ON(trsw_rx & ~(B43_PHY_RFOVERVAL_TRSWRX | | |
258 | B43_PHY_RFOVERVAL_BW)); | |
259 | */ | |
260 | trsw_rx &= (B43_PHY_RFOVERVAL_TRSWRX | B43_PHY_RFOVERVAL_BW); | |
261 | ||
262 | /* Construct the RF Override Value */ | |
263 | rfover = B43_PHY_RFOVERVAL_UNK; | |
264 | rfover |= pga; | |
265 | rfover |= lna; | |
266 | rfover |= trsw_rx; | |
267 | if ((dev->dev->bus->sprom.r1.boardflags_lo & B43_BFL_EXTLNA) && | |
268 | phy->rev > 6) | |
269 | rfover |= B43_PHY_RFOVERVAL_EXTLNA; | |
270 | ||
271 | b43_phy_write(dev, B43_PHY_PGACTL, 0xE300); | |
272 | b43_phy_write(dev, B43_PHY_RFOVERVAL, rfover); | |
273 | udelay(10); | |
274 | rfover |= B43_PHY_RFOVERVAL_BW_LBW; | |
275 | b43_phy_write(dev, B43_PHY_RFOVERVAL, rfover); | |
276 | udelay(10); | |
277 | rfover |= B43_PHY_RFOVERVAL_BW_LPF; | |
278 | b43_phy_write(dev, B43_PHY_RFOVERVAL, rfover); | |
279 | udelay(10); | |
280 | b43_phy_write(dev, B43_PHY_PGACTL, 0xF300); | |
281 | } else { | |
282 | pga |= B43_PHY_PGACTL_UNKNOWN; | |
283 | b43_phy_write(dev, B43_PHY_PGACTL, pga); | |
284 | udelay(10); | |
285 | pga |= B43_PHY_PGACTL_LOWBANDW; | |
286 | b43_phy_write(dev, B43_PHY_PGACTL, pga); | |
287 | udelay(10); | |
288 | pga |= B43_PHY_PGACTL_LPF; | |
289 | b43_phy_write(dev, B43_PHY_PGACTL, pga); | |
290 | } | |
291 | udelay(21); | |
292 | feedthrough = b43_phy_read(dev, B43_PHY_LO_LEAKAGE); | |
293 | ||
294 | /* This is a good place to check if we need to relax a bit, | |
295 | * as this is the main function called regularly | |
296 | * in the LO calibration. */ | |
297 | cond_resched(); | |
298 | ||
299 | return feedthrough; | |
300 | } | |
301 | ||
302 | /* TXCTL Register and Value Table. | |
303 | * Returns the "TXCTL Register". | |
304 | * "value" is the "TXCTL Value". | |
305 | * "pad_mix_gain" is the PAD Mixer Gain. | |
306 | */ | |
307 | static u16 lo_txctl_register_table(struct b43_wldev *dev, | |
308 | u16 * value, u16 * pad_mix_gain) | |
309 | { | |
310 | struct b43_phy *phy = &dev->phy; | |
311 | u16 reg, v, padmix; | |
312 | ||
313 | if (phy->type == B43_PHYTYPE_B) { | |
314 | v = 0x30; | |
315 | if (phy->radio_rev <= 5) { | |
316 | reg = 0x43; | |
317 | padmix = 0; | |
318 | } else { | |
319 | reg = 0x52; | |
320 | padmix = 5; | |
321 | } | |
322 | } else { | |
323 | if (phy->rev >= 2 && phy->radio_rev == 8) { | |
324 | reg = 0x43; | |
325 | v = 0x10; | |
326 | padmix = 2; | |
327 | } else { | |
328 | reg = 0x52; | |
329 | v = 0x30; | |
330 | padmix = 5; | |
331 | } | |
332 | } | |
333 | if (value) | |
334 | *value = v; | |
335 | if (pad_mix_gain) | |
336 | *pad_mix_gain = padmix; | |
337 | ||
338 | return reg; | |
339 | } | |
340 | ||
341 | static void lo_measure_txctl_values(struct b43_wldev *dev) | |
342 | { | |
343 | struct b43_phy *phy = &dev->phy; | |
344 | struct b43_txpower_lo_control *lo = phy->lo_control; | |
345 | u16 reg, mask; | |
346 | u16 trsw_rx, pga; | |
347 | u16 radio_pctl_reg; | |
348 | ||
349 | static const u8 tx_bias_values[] = { | |
350 | 0x09, 0x08, 0x0A, 0x01, 0x00, | |
351 | 0x02, 0x05, 0x04, 0x06, | |
352 | }; | |
353 | static const u8 tx_magn_values[] = { | |
354 | 0x70, 0x40, | |
355 | }; | |
356 | ||
357 | if (!has_loopback_gain(phy)) { | |
358 | radio_pctl_reg = 6; | |
359 | trsw_rx = 2; | |
360 | pga = 0; | |
361 | } else { | |
362 | int lb_gain; /* Loopback gain (in dB) */ | |
363 | ||
364 | trsw_rx = 0; | |
365 | lb_gain = phy->max_lb_gain / 2; | |
366 | if (lb_gain > 10) { | |
367 | radio_pctl_reg = 0; | |
368 | pga = abs(10 - lb_gain) / 6; | |
369 | pga = limit_value(pga, 0, 15); | |
370 | } else { | |
371 | int cmp_val; | |
372 | int tmp; | |
373 | ||
374 | pga = 0; | |
375 | cmp_val = 0x24; | |
376 | if ((phy->rev >= 2) && | |
377 | (phy->radio_ver == 0x2050) && (phy->radio_rev == 8)) | |
378 | cmp_val = 0x3C; | |
379 | tmp = lb_gain; | |
380 | if ((10 - lb_gain) < cmp_val) | |
381 | tmp = (10 - lb_gain); | |
382 | if (tmp < 0) | |
383 | tmp += 6; | |
384 | else | |
385 | tmp += 3; | |
386 | cmp_val /= 4; | |
387 | tmp /= 4; | |
388 | if (tmp >= cmp_val) | |
389 | radio_pctl_reg = cmp_val; | |
390 | else | |
391 | radio_pctl_reg = tmp; | |
392 | } | |
393 | } | |
394 | b43_radio_write16(dev, 0x43, (b43_radio_read16(dev, 0x43) | |
395 | & 0xFFF0) | radio_pctl_reg); | |
396 | b43_phy_set_baseband_attenuation(dev, 2); | |
397 | ||
398 | reg = lo_txctl_register_table(dev, &mask, NULL); | |
399 | mask = ~mask; | |
400 | b43_radio_write16(dev, reg, b43_radio_read16(dev, reg) | |
401 | & mask); | |
402 | ||
403 | if (has_tx_magnification(phy)) { | |
404 | int i, j; | |
405 | int feedthrough; | |
406 | int min_feedth = 0xFFFF; | |
407 | u8 tx_magn, tx_bias; | |
408 | ||
409 | for (i = 0; i < ARRAY_SIZE(tx_magn_values); i++) { | |
410 | tx_magn = tx_magn_values[i]; | |
411 | b43_radio_write16(dev, 0x52, | |
412 | (b43_radio_read16(dev, 0x52) | |
413 | & 0xFF0F) | tx_magn); | |
414 | for (j = 0; j < ARRAY_SIZE(tx_bias_values); j++) { | |
415 | tx_bias = tx_bias_values[j]; | |
416 | b43_radio_write16(dev, 0x52, | |
417 | (b43_radio_read16(dev, 0x52) | |
418 | & 0xFFF0) | tx_bias); | |
419 | feedthrough = | |
420 | lo_measure_feedthrough(dev, 0, pga, | |
421 | trsw_rx); | |
422 | if (feedthrough < min_feedth) { | |
423 | lo->tx_bias = tx_bias; | |
424 | lo->tx_magn = tx_magn; | |
425 | min_feedth = feedthrough; | |
426 | } | |
427 | if (lo->tx_bias == 0) | |
428 | break; | |
429 | } | |
430 | b43_radio_write16(dev, 0x52, | |
431 | (b43_radio_read16(dev, 0x52) | |
432 | & 0xFF00) | lo->tx_bias | lo-> | |
433 | tx_magn); | |
434 | } | |
435 | } else { | |
436 | lo->tx_magn = 0; | |
437 | lo->tx_bias = 0; | |
438 | b43_radio_write16(dev, 0x52, b43_radio_read16(dev, 0x52) | |
439 | & 0xFFF0); /* TX bias == 0 */ | |
440 | } | |
441 | } | |
442 | ||
443 | static void lo_read_power_vector(struct b43_wldev *dev) | |
444 | { | |
445 | struct b43_phy *phy = &dev->phy; | |
446 | struct b43_txpower_lo_control *lo = phy->lo_control; | |
447 | u16 i; | |
448 | u64 tmp; | |
449 | u64 power_vector = 0; | |
450 | int rf_offset, bb_offset; | |
451 | struct b43_loctl *loctl; | |
452 | ||
453 | for (i = 0; i < 8; i += 2) { | |
454 | tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x310 + i); | |
455 | /* Clear the top byte. We get holes in the bitmap... */ | |
456 | tmp &= 0xFF; | |
457 | power_vector |= (tmp << (i * 8)); | |
458 | /* Clear the vector on the device. */ | |
459 | b43_shm_write16(dev, B43_SHM_SHARED, 0x310 + i, 0); | |
460 | } | |
461 | ||
462 | if (power_vector) | |
463 | lo->power_vector = power_vector; | |
464 | power_vector = lo->power_vector; | |
465 | ||
466 | for (i = 0; i < 64; i++) { | |
467 | if (power_vector & ((u64) 1ULL << i)) { | |
468 | /* Now figure out which b43_loctl corresponds | |
469 | * to this bit. | |
470 | */ | |
471 | rf_offset = i / lo->rfatt_list.len; | |
472 | bb_offset = i % lo->rfatt_list.len; //FIXME? | |
473 | loctl = | |
474 | b43_get_lo_g_ctl(dev, | |
475 | &lo->rfatt_list.list[rf_offset], | |
476 | &lo->bbatt_list.list[bb_offset]); | |
477 | /* And mark it as "used", as the device told us | |
478 | * through the bitmap it is using it. | |
479 | */ | |
480 | loctl->used = 1; | |
481 | } | |
482 | } | |
483 | } | |
484 | ||
485 | /* 802.11/LO/GPHY/MeasuringGains */ | |
486 | static void lo_measure_gain_values(struct b43_wldev *dev, | |
487 | s16 max_rx_gain, int use_trsw_rx) | |
488 | { | |
489 | struct b43_phy *phy = &dev->phy; | |
490 | u16 tmp; | |
491 | ||
492 | if (max_rx_gain < 0) | |
493 | max_rx_gain = 0; | |
494 | ||
495 | if (has_loopback_gain(phy)) { | |
496 | int trsw_rx = 0; | |
497 | int trsw_rx_gain; | |
498 | ||
499 | if (use_trsw_rx) { | |
500 | trsw_rx_gain = phy->trsw_rx_gain / 2; | |
501 | if (max_rx_gain >= trsw_rx_gain) { | |
502 | trsw_rx_gain = max_rx_gain - trsw_rx_gain; | |
503 | trsw_rx = 0x20; | |
504 | } | |
505 | } else | |
506 | trsw_rx_gain = max_rx_gain; | |
507 | if (trsw_rx_gain < 9) { | |
508 | phy->lna_lod_gain = 0; | |
509 | } else { | |
510 | phy->lna_lod_gain = 1; | |
511 | trsw_rx_gain -= 8; | |
512 | } | |
513 | trsw_rx_gain = limit_value(trsw_rx_gain, 0, 0x2D); | |
514 | phy->pga_gain = trsw_rx_gain / 3; | |
515 | if (phy->pga_gain >= 5) { | |
516 | phy->pga_gain -= 5; | |
517 | phy->lna_gain = 2; | |
518 | } else | |
519 | phy->lna_gain = 0; | |
520 | } else { | |
521 | phy->lna_gain = 0; | |
522 | phy->trsw_rx_gain = 0x20; | |
523 | if (max_rx_gain >= 0x14) { | |
524 | phy->lna_lod_gain = 1; | |
525 | phy->pga_gain = 2; | |
526 | } else if (max_rx_gain >= 0x12) { | |
527 | phy->lna_lod_gain = 1; | |
528 | phy->pga_gain = 1; | |
529 | } else if (max_rx_gain >= 0xF) { | |
530 | phy->lna_lod_gain = 1; | |
531 | phy->pga_gain = 0; | |
532 | } else { | |
533 | phy->lna_lod_gain = 0; | |
534 | phy->pga_gain = 0; | |
535 | } | |
536 | } | |
537 | ||
538 | tmp = b43_radio_read16(dev, 0x7A); | |
539 | if (phy->lna_lod_gain == 0) | |
540 | tmp &= ~0x0008; | |
541 | else | |
542 | tmp |= 0x0008; | |
543 | b43_radio_write16(dev, 0x7A, tmp); | |
544 | } | |
545 | ||
546 | struct lo_g_saved_values { | |
547 | u8 old_channel; | |
548 | ||
549 | /* Core registers */ | |
550 | u16 reg_3F4; | |
551 | u16 reg_3E2; | |
552 | ||
553 | /* PHY registers */ | |
554 | u16 phy_lo_mask; | |
555 | u16 phy_extg_01; | |
556 | u16 phy_dacctl_hwpctl; | |
557 | u16 phy_dacctl; | |
558 | u16 phy_base_14; | |
559 | u16 phy_hpwr_tssictl; | |
560 | u16 phy_analogover; | |
561 | u16 phy_analogoverval; | |
562 | u16 phy_rfover; | |
563 | u16 phy_rfoverval; | |
564 | u16 phy_classctl; | |
565 | u16 phy_base_3E; | |
566 | u16 phy_crs0; | |
567 | u16 phy_pgactl; | |
568 | u16 phy_base_2A; | |
569 | u16 phy_syncctl; | |
570 | u16 phy_base_30; | |
571 | u16 phy_base_06; | |
572 | ||
573 | /* Radio registers */ | |
574 | u16 radio_43; | |
575 | u16 radio_7A; | |
576 | u16 radio_52; | |
577 | }; | |
578 | ||
579 | static void lo_measure_setup(struct b43_wldev *dev, | |
580 | struct lo_g_saved_values *sav) | |
581 | { | |
582 | struct ssb_sprom *sprom = &dev->dev->bus->sprom; | |
583 | struct b43_phy *phy = &dev->phy; | |
584 | struct b43_txpower_lo_control *lo = phy->lo_control; | |
585 | u16 tmp; | |
586 | ||
587 | if (b43_has_hardware_pctl(phy)) { | |
588 | sav->phy_lo_mask = b43_phy_read(dev, B43_PHY_LO_MASK); | |
589 | sav->phy_extg_01 = b43_phy_read(dev, B43_PHY_EXTG(0x01)); | |
590 | sav->phy_dacctl_hwpctl = b43_phy_read(dev, B43_PHY_DACCTL); | |
591 | sav->phy_base_14 = b43_phy_read(dev, B43_PHY_BASE(0x14)); | |
592 | sav->phy_hpwr_tssictl = b43_phy_read(dev, B43_PHY_HPWR_TSSICTL); | |
593 | ||
594 | b43_phy_write(dev, B43_PHY_HPWR_TSSICTL, | |
595 | b43_phy_read(dev, B43_PHY_HPWR_TSSICTL) | |
596 | | 0x100); | |
597 | b43_phy_write(dev, B43_PHY_EXTG(0x01), | |
598 | b43_phy_read(dev, B43_PHY_EXTG(0x01)) | |
599 | | 0x40); | |
600 | b43_phy_write(dev, B43_PHY_DACCTL, | |
601 | b43_phy_read(dev, B43_PHY_DACCTL) | |
602 | | 0x40); | |
603 | b43_phy_write(dev, B43_PHY_BASE(0x14), | |
604 | b43_phy_read(dev, B43_PHY_BASE(0x14)) | |
605 | | 0x200); | |
606 | } | |
607 | if (phy->type == B43_PHYTYPE_B && | |
608 | phy->radio_ver == 0x2050 && phy->radio_rev < 6) { | |
609 | b43_phy_write(dev, B43_PHY_BASE(0x16), 0x410); | |
610 | b43_phy_write(dev, B43_PHY_BASE(0x17), 0x820); | |
611 | } | |
612 | if (!lo->rebuild && b43_has_hardware_pctl(phy)) | |
613 | lo_read_power_vector(dev); | |
614 | if (phy->rev >= 2) { | |
615 | sav->phy_analogover = b43_phy_read(dev, B43_PHY_ANALOGOVER); | |
616 | sav->phy_analogoverval = | |
617 | b43_phy_read(dev, B43_PHY_ANALOGOVERVAL); | |
618 | sav->phy_rfover = b43_phy_read(dev, B43_PHY_RFOVER); | |
619 | sav->phy_rfoverval = b43_phy_read(dev, B43_PHY_RFOVERVAL); | |
620 | sav->phy_classctl = b43_phy_read(dev, B43_PHY_CLASSCTL); | |
621 | sav->phy_base_3E = b43_phy_read(dev, B43_PHY_BASE(0x3E)); | |
622 | sav->phy_crs0 = b43_phy_read(dev, B43_PHY_CRS0); | |
623 | ||
624 | b43_phy_write(dev, B43_PHY_CLASSCTL, | |
625 | b43_phy_read(dev, B43_PHY_CLASSCTL) | |
626 | & 0xFFFC); | |
627 | b43_phy_write(dev, B43_PHY_CRS0, b43_phy_read(dev, B43_PHY_CRS0) | |
628 | & 0x7FFF); | |
629 | b43_phy_write(dev, B43_PHY_ANALOGOVER, | |
630 | b43_phy_read(dev, B43_PHY_ANALOGOVER) | |
631 | | 0x0003); | |
632 | b43_phy_write(dev, B43_PHY_ANALOGOVERVAL, | |
633 | b43_phy_read(dev, B43_PHY_ANALOGOVERVAL) | |
634 | & 0xFFFC); | |
635 | if (phy->type == B43_PHYTYPE_G) { | |
636 | if ((phy->rev >= 7) && | |
637 | (sprom->r1.boardflags_lo & B43_BFL_EXTLNA)) { | |
638 | b43_phy_write(dev, B43_PHY_RFOVER, 0x933); | |
639 | } else { | |
640 | b43_phy_write(dev, B43_PHY_RFOVER, 0x133); | |
641 | } | |
642 | } else { | |
643 | b43_phy_write(dev, B43_PHY_RFOVER, 0); | |
644 | } | |
645 | b43_phy_write(dev, B43_PHY_BASE(0x3E), 0); | |
646 | } | |
647 | sav->reg_3F4 = b43_read16(dev, 0x3F4); | |
648 | sav->reg_3E2 = b43_read16(dev, 0x3E2); | |
649 | sav->radio_43 = b43_radio_read16(dev, 0x43); | |
650 | sav->radio_7A = b43_radio_read16(dev, 0x7A); | |
651 | sav->phy_pgactl = b43_phy_read(dev, B43_PHY_PGACTL); | |
652 | sav->phy_base_2A = b43_phy_read(dev, B43_PHY_BASE(0x2A)); | |
653 | sav->phy_syncctl = b43_phy_read(dev, B43_PHY_SYNCCTL); | |
654 | sav->phy_dacctl = b43_phy_read(dev, B43_PHY_DACCTL); | |
655 | ||
656 | if (!has_tx_magnification(phy)) { | |
657 | sav->radio_52 = b43_radio_read16(dev, 0x52); | |
658 | sav->radio_52 &= 0x00F0; | |
659 | } | |
660 | if (phy->type == B43_PHYTYPE_B) { | |
661 | sav->phy_base_30 = b43_phy_read(dev, B43_PHY_BASE(0x30)); | |
662 | sav->phy_base_06 = b43_phy_read(dev, B43_PHY_BASE(0x06)); | |
663 | b43_phy_write(dev, B43_PHY_BASE(0x30), 0x00FF); | |
664 | b43_phy_write(dev, B43_PHY_BASE(0x06), 0x3F3F); | |
665 | } else { | |
666 | b43_write16(dev, 0x3E2, b43_read16(dev, 0x3E2) | |
667 | | 0x8000); | |
668 | } | |
669 | b43_write16(dev, 0x3F4, b43_read16(dev, 0x3F4) | |
670 | & 0xF000); | |
671 | ||
672 | tmp = | |
673 | (phy->type == B43_PHYTYPE_G) ? B43_PHY_LO_MASK : B43_PHY_BASE(0x2E); | |
674 | b43_phy_write(dev, tmp, 0x007F); | |
675 | ||
676 | tmp = sav->phy_syncctl; | |
677 | b43_phy_write(dev, B43_PHY_SYNCCTL, tmp & 0xFF7F); | |
678 | tmp = sav->radio_7A; | |
679 | b43_radio_write16(dev, 0x007A, tmp & 0xFFF0); | |
680 | ||
681 | b43_phy_write(dev, B43_PHY_BASE(0x2A), 0x8A3); | |
682 | if (phy->type == B43_PHYTYPE_G || | |
683 | (phy->type == B43_PHYTYPE_B && | |
684 | phy->radio_ver == 0x2050 && phy->radio_rev >= 6)) { | |
685 | b43_phy_write(dev, B43_PHY_BASE(0x2B), 0x1003); | |
686 | } else | |
687 | b43_phy_write(dev, B43_PHY_BASE(0x2B), 0x0802); | |
688 | if (phy->rev >= 2) | |
689 | b43_dummy_transmission(dev); | |
690 | b43_radio_selectchannel(dev, 6, 0); | |
691 | b43_radio_read16(dev, 0x51); /* dummy read */ | |
692 | if (phy->type == B43_PHYTYPE_G) | |
693 | b43_phy_write(dev, B43_PHY_BASE(0x2F), 0); | |
694 | if (lo->rebuild) | |
695 | lo_measure_txctl_values(dev); | |
696 | if (phy->type == B43_PHYTYPE_G && phy->rev >= 3) { | |
697 | b43_phy_write(dev, B43_PHY_LO_MASK, 0xC078); | |
698 | } else { | |
699 | if (phy->type == B43_PHYTYPE_B) | |
700 | b43_phy_write(dev, B43_PHY_BASE(0x2E), 0x8078); | |
701 | else | |
702 | b43_phy_write(dev, B43_PHY_LO_MASK, 0x8078); | |
703 | } | |
704 | } | |
705 | ||
706 | static void lo_measure_restore(struct b43_wldev *dev, | |
707 | struct lo_g_saved_values *sav) | |
708 | { | |
709 | struct b43_phy *phy = &dev->phy; | |
710 | struct b43_txpower_lo_control *lo = phy->lo_control; | |
711 | u16 tmp; | |
712 | ||
713 | if (phy->rev >= 2) { | |
714 | b43_phy_write(dev, B43_PHY_PGACTL, 0xE300); | |
715 | tmp = (phy->pga_gain << 8); | |
716 | b43_phy_write(dev, B43_PHY_RFOVERVAL, tmp | 0xA0); | |
717 | udelay(5); | |
718 | b43_phy_write(dev, B43_PHY_RFOVERVAL, tmp | 0xA2); | |
719 | udelay(2); | |
720 | b43_phy_write(dev, B43_PHY_RFOVERVAL, tmp | 0xA3); | |
721 | } else { | |
722 | tmp = (phy->pga_gain | 0xEFA0); | |
723 | b43_phy_write(dev, B43_PHY_PGACTL, tmp); | |
724 | } | |
725 | if (b43_has_hardware_pctl(phy)) { | |
726 | b43_gphy_dc_lt_init(dev); | |
727 | } else { | |
728 | if (lo->rebuild) | |
729 | b43_lo_g_adjust_to(dev, 3, 2, 0); | |
730 | else | |
731 | b43_lo_g_adjust(dev); | |
732 | } | |
733 | if (phy->type == B43_PHYTYPE_G) { | |
734 | if (phy->rev >= 3) | |
735 | b43_phy_write(dev, B43_PHY_BASE(0x2E), 0xC078); | |
736 | else | |
737 | b43_phy_write(dev, B43_PHY_BASE(0x2E), 0x8078); | |
738 | if (phy->rev >= 2) | |
739 | b43_phy_write(dev, B43_PHY_BASE(0x2F), 0x0202); | |
740 | else | |
741 | b43_phy_write(dev, B43_PHY_BASE(0x2F), 0x0101); | |
742 | } | |
743 | b43_write16(dev, 0x3F4, sav->reg_3F4); | |
744 | b43_phy_write(dev, B43_PHY_PGACTL, sav->phy_pgactl); | |
745 | b43_phy_write(dev, B43_PHY_BASE(0x2A), sav->phy_base_2A); | |
746 | b43_phy_write(dev, B43_PHY_SYNCCTL, sav->phy_syncctl); | |
747 | b43_phy_write(dev, B43_PHY_DACCTL, sav->phy_dacctl); | |
748 | b43_radio_write16(dev, 0x43, sav->radio_43); | |
749 | b43_radio_write16(dev, 0x7A, sav->radio_7A); | |
750 | if (!has_tx_magnification(phy)) { | |
751 | tmp = sav->radio_52; | |
752 | b43_radio_write16(dev, 0x52, (b43_radio_read16(dev, 0x52) | |
753 | & 0xFF0F) | tmp); | |
754 | } | |
755 | b43_write16(dev, 0x3E2, sav->reg_3E2); | |
756 | if (phy->type == B43_PHYTYPE_B && | |
757 | phy->radio_ver == 0x2050 && phy->radio_rev <= 5) { | |
758 | b43_phy_write(dev, B43_PHY_BASE(0x30), sav->phy_base_30); | |
759 | b43_phy_write(dev, B43_PHY_BASE(0x06), sav->phy_base_06); | |
760 | } | |
761 | if (phy->rev >= 2) { | |
762 | b43_phy_write(dev, B43_PHY_ANALOGOVER, sav->phy_analogover); | |
763 | b43_phy_write(dev, B43_PHY_ANALOGOVERVAL, | |
764 | sav->phy_analogoverval); | |
765 | b43_phy_write(dev, B43_PHY_CLASSCTL, sav->phy_classctl); | |
766 | b43_phy_write(dev, B43_PHY_RFOVER, sav->phy_rfover); | |
767 | b43_phy_write(dev, B43_PHY_RFOVERVAL, sav->phy_rfoverval); | |
768 | b43_phy_write(dev, B43_PHY_BASE(0x3E), sav->phy_base_3E); | |
769 | b43_phy_write(dev, B43_PHY_CRS0, sav->phy_crs0); | |
770 | } | |
771 | if (b43_has_hardware_pctl(phy)) { | |
772 | tmp = (sav->phy_lo_mask & 0xBFFF); | |
773 | b43_phy_write(dev, B43_PHY_LO_MASK, tmp); | |
774 | b43_phy_write(dev, B43_PHY_EXTG(0x01), sav->phy_extg_01); | |
775 | b43_phy_write(dev, B43_PHY_DACCTL, sav->phy_dacctl_hwpctl); | |
776 | b43_phy_write(dev, B43_PHY_BASE(0x14), sav->phy_base_14); | |
777 | b43_phy_write(dev, B43_PHY_HPWR_TSSICTL, sav->phy_hpwr_tssictl); | |
778 | } | |
779 | b43_radio_selectchannel(dev, sav->old_channel, 1); | |
780 | } | |
781 | ||
782 | struct b43_lo_g_statemachine { | |
783 | int current_state; | |
784 | int nr_measured; | |
785 | int state_val_multiplier; | |
786 | u16 lowest_feedth; | |
787 | struct b43_loctl min_loctl; | |
788 | }; | |
789 | ||
790 | /* Loop over each possible value in this state. */ | |
791 | static int lo_probe_possible_loctls(struct b43_wldev *dev, | |
792 | struct b43_loctl *probe_loctl, | |
793 | struct b43_lo_g_statemachine *d) | |
794 | { | |
795 | struct b43_phy *phy = &dev->phy; | |
796 | struct b43_txpower_lo_control *lo = phy->lo_control; | |
797 | struct b43_loctl test_loctl; | |
798 | struct b43_loctl orig_loctl; | |
799 | struct b43_loctl prev_loctl = { | |
800 | .i = -100, | |
801 | .q = -100, | |
802 | }; | |
803 | int i; | |
804 | int begin, end; | |
805 | int found_lower = 0; | |
806 | u16 feedth; | |
807 | ||
808 | static const struct b43_loctl modifiers[] = { | |
809 | {.i = 1,.q = 1,}, | |
810 | {.i = 1,.q = 0,}, | |
811 | {.i = 1,.q = -1,}, | |
812 | {.i = 0,.q = -1,}, | |
813 | {.i = -1,.q = -1,}, | |
814 | {.i = -1,.q = 0,}, | |
815 | {.i = -1,.q = 1,}, | |
816 | {.i = 0,.q = 1,}, | |
817 | }; | |
818 | ||
819 | if (d->current_state == 0) { | |
820 | begin = 1; | |
821 | end = 8; | |
822 | } else if (d->current_state % 2 == 0) { | |
823 | begin = d->current_state - 1; | |
824 | end = d->current_state + 1; | |
825 | } else { | |
826 | begin = d->current_state - 2; | |
827 | end = d->current_state + 2; | |
828 | } | |
829 | if (begin < 1) | |
830 | begin += 8; | |
831 | if (end > 8) | |
832 | end -= 8; | |
833 | ||
834 | memcpy(&orig_loctl, probe_loctl, sizeof(struct b43_loctl)); | |
835 | i = begin; | |
836 | d->current_state = i; | |
837 | while (1) { | |
838 | B43_WARN_ON(!(i >= 1 && i <= 8)); | |
839 | memcpy(&test_loctl, &orig_loctl, sizeof(struct b43_loctl)); | |
840 | test_loctl.i += modifiers[i - 1].i * d->state_val_multiplier; | |
841 | test_loctl.q += modifiers[i - 1].q * d->state_val_multiplier; | |
842 | if ((test_loctl.i != prev_loctl.i || | |
843 | test_loctl.q != prev_loctl.q) && | |
844 | (abs(test_loctl.i) <= 16 && abs(test_loctl.q) <= 16)) { | |
845 | b43_lo_write(dev, &test_loctl); | |
846 | feedth = lo_measure_feedthrough(dev, phy->lna_gain, | |
847 | phy->pga_gain, | |
848 | phy->trsw_rx_gain); | |
849 | if (feedth < d->lowest_feedth) { | |
850 | memcpy(probe_loctl, &test_loctl, | |
851 | sizeof(struct b43_loctl)); | |
852 | found_lower = 1; | |
853 | d->lowest_feedth = feedth; | |
854 | if ((d->nr_measured < 2) && | |
855 | (!has_loopback_gain(phy) || lo->rebuild)) | |
856 | break; | |
857 | } | |
858 | } | |
859 | memcpy(&prev_loctl, &test_loctl, sizeof(prev_loctl)); | |
860 | if (i == end) | |
861 | break; | |
862 | if (i == 8) | |
863 | i = 1; | |
864 | else | |
865 | i++; | |
866 | d->current_state = i; | |
867 | } | |
868 | ||
869 | return found_lower; | |
870 | } | |
871 | ||
872 | static void lo_probe_loctls_statemachine(struct b43_wldev *dev, | |
873 | struct b43_loctl *loctl, | |
874 | int *max_rx_gain) | |
875 | { | |
876 | struct b43_phy *phy = &dev->phy; | |
877 | struct b43_txpower_lo_control *lo = phy->lo_control; | |
878 | struct b43_lo_g_statemachine d; | |
879 | u16 feedth; | |
880 | int found_lower; | |
881 | struct b43_loctl probe_loctl; | |
882 | int max_repeat = 1, repeat_cnt = 0; | |
883 | ||
884 | d.nr_measured = 0; | |
885 | d.state_val_multiplier = 1; | |
886 | if (has_loopback_gain(phy) && !lo->rebuild) | |
887 | d.state_val_multiplier = 3; | |
888 | ||
889 | memcpy(&d.min_loctl, loctl, sizeof(struct b43_loctl)); | |
890 | if (has_loopback_gain(phy) && lo->rebuild) | |
891 | max_repeat = 4; | |
892 | do { | |
893 | b43_lo_write(dev, &d.min_loctl); | |
894 | feedth = lo_measure_feedthrough(dev, phy->lna_gain, | |
895 | phy->pga_gain, | |
896 | phy->trsw_rx_gain); | |
897 | if (!lo->rebuild && feedth < 0x258) { | |
898 | if (feedth >= 0x12C) | |
899 | *max_rx_gain += 6; | |
900 | else | |
901 | *max_rx_gain += 3; | |
902 | feedth = lo_measure_feedthrough(dev, phy->lna_gain, | |
903 | phy->pga_gain, | |
904 | phy->trsw_rx_gain); | |
905 | } | |
906 | d.lowest_feedth = feedth; | |
907 | ||
908 | d.current_state = 0; | |
909 | do { | |
910 | B43_WARN_ON(! | |
911 | (d.current_state >= 0 | |
912 | && d.current_state <= 8)); | |
913 | memcpy(&probe_loctl, &d.min_loctl, | |
914 | sizeof(struct b43_loctl)); | |
915 | found_lower = | |
916 | lo_probe_possible_loctls(dev, &probe_loctl, &d); | |
917 | if (!found_lower) | |
918 | break; | |
919 | if ((probe_loctl.i == d.min_loctl.i) && | |
920 | (probe_loctl.q == d.min_loctl.q)) | |
921 | break; | |
922 | memcpy(&d.min_loctl, &probe_loctl, | |
923 | sizeof(struct b43_loctl)); | |
924 | d.nr_measured++; | |
925 | } while (d.nr_measured < 24); | |
926 | memcpy(loctl, &d.min_loctl, sizeof(struct b43_loctl)); | |
927 | ||
928 | if (has_loopback_gain(phy)) { | |
929 | if (d.lowest_feedth > 0x1194) | |
930 | *max_rx_gain -= 6; | |
931 | else if (d.lowest_feedth < 0x5DC) | |
932 | *max_rx_gain += 3; | |
933 | if (repeat_cnt == 0) { | |
934 | if (d.lowest_feedth <= 0x5DC) { | |
935 | d.state_val_multiplier = 1; | |
936 | repeat_cnt++; | |
937 | } else | |
938 | d.state_val_multiplier = 2; | |
939 | } else if (repeat_cnt == 2) | |
940 | d.state_val_multiplier = 1; | |
941 | } | |
942 | lo_measure_gain_values(dev, *max_rx_gain, | |
943 | has_loopback_gain(phy)); | |
944 | } while (++repeat_cnt < max_repeat); | |
945 | } | |
946 | ||
947 | #if B43_CALIB_ALL_LOCTLS | |
948 | static const struct b43_rfatt b43_full_rfatt_list_items[] = { | |
949 | { .att = 0, .with_padmix = 0, }, | |
950 | { .att = 1, .with_padmix = 0, }, | |
951 | { .att = 2, .with_padmix = 0, }, | |
952 | { .att = 3, .with_padmix = 0, }, | |
953 | { .att = 4, .with_padmix = 0, }, | |
954 | { .att = 5, .with_padmix = 0, }, | |
955 | { .att = 6, .with_padmix = 0, }, | |
956 | { .att = 7, .with_padmix = 0, }, | |
957 | { .att = 8, .with_padmix = 0, }, | |
958 | { .att = 9, .with_padmix = 0, }, | |
959 | { .att = 10, .with_padmix = 0, }, | |
960 | { .att = 11, .with_padmix = 0, }, | |
961 | { .att = 12, .with_padmix = 0, }, | |
962 | { .att = 13, .with_padmix = 0, }, | |
963 | { .att = 14, .with_padmix = 0, }, | |
964 | { .att = 15, .with_padmix = 0, }, | |
965 | { .att = 0, .with_padmix = 1, }, | |
966 | { .att = 1, .with_padmix = 1, }, | |
967 | { .att = 2, .with_padmix = 1, }, | |
968 | { .att = 3, .with_padmix = 1, }, | |
969 | { .att = 4, .with_padmix = 1, }, | |
970 | { .att = 5, .with_padmix = 1, }, | |
971 | { .att = 6, .with_padmix = 1, }, | |
972 | { .att = 7, .with_padmix = 1, }, | |
973 | { .att = 8, .with_padmix = 1, }, | |
974 | { .att = 9, .with_padmix = 1, }, | |
975 | { .att = 10, .with_padmix = 1, }, | |
976 | { .att = 11, .with_padmix = 1, }, | |
977 | { .att = 12, .with_padmix = 1, }, | |
978 | { .att = 13, .with_padmix = 1, }, | |
979 | { .att = 14, .with_padmix = 1, }, | |
980 | { .att = 15, .with_padmix = 1, }, | |
981 | }; | |
982 | static const struct b43_rfatt_list b43_full_rfatt_list = { | |
983 | .list = b43_full_rfatt_list_items, | |
984 | .len = ARRAY_SIZE(b43_full_rfatt_list_items), | |
985 | }; | |
986 | ||
987 | static const struct b43_bbatt b43_full_bbatt_list_items[] = { | |
988 | { .att = 0, }, | |
989 | { .att = 1, }, | |
990 | { .att = 2, }, | |
991 | { .att = 3, }, | |
992 | { .att = 4, }, | |
993 | { .att = 5, }, | |
994 | { .att = 6, }, | |
995 | { .att = 7, }, | |
996 | { .att = 8, }, | |
997 | { .att = 9, }, | |
998 | { .att = 10, }, | |
999 | { .att = 11, }, | |
1000 | }; | |
1001 | static const struct b43_bbatt_list b43_full_bbatt_list = { | |
1002 | .list = b43_full_bbatt_list_items, | |
1003 | .len = ARRAY_SIZE(b43_full_bbatt_list_items), | |
1004 | }; | |
1005 | #endif /* B43_CALIB_ALL_LOCTLS */ | |
1006 | ||
1007 | static void lo_measure(struct b43_wldev *dev) | |
1008 | { | |
1009 | struct b43_phy *phy = &dev->phy; | |
1010 | struct b43_txpower_lo_control *lo = phy->lo_control; | |
1011 | struct b43_loctl loctl = { | |
1012 | .i = 0, | |
1013 | .q = 0, | |
1014 | }; | |
1015 | struct b43_loctl *ploctl; | |
1016 | int max_rx_gain; | |
1017 | int rfidx, bbidx; | |
1018 | const struct b43_bbatt_list *bbatt_list; | |
1019 | const struct b43_rfatt_list *rfatt_list; | |
1020 | ||
1021 | /* Values from the "TXCTL Register and Value Table" */ | |
1022 | u16 txctl_reg; | |
1023 | u16 txctl_value; | |
1024 | u16 pad_mix_gain; | |
1025 | ||
1026 | bbatt_list = &lo->bbatt_list; | |
1027 | rfatt_list = &lo->rfatt_list; | |
1028 | #if B43_CALIB_ALL_LOCTLS | |
1029 | bbatt_list = &b43_full_bbatt_list; | |
1030 | rfatt_list = &b43_full_rfatt_list; | |
1031 | #endif | |
1032 | ||
1033 | txctl_reg = lo_txctl_register_table(dev, &txctl_value, &pad_mix_gain); | |
1034 | ||
1035 | for (rfidx = 0; rfidx < rfatt_list->len; rfidx++) { | |
1036 | ||
1037 | b43_radio_write16(dev, 0x43, (b43_radio_read16(dev, 0x43) | |
1038 | & 0xFFF0) | | |
1039 | rfatt_list->list[rfidx].att); | |
1040 | b43_radio_write16(dev, txctl_reg, | |
1041 | (b43_radio_read16(dev, txctl_reg) | |
1042 | & ~txctl_value) | |
1043 | | (rfatt_list->list[rfidx].with_padmix ? | |
1044 | txctl_value : 0)); | |
1045 | ||
1046 | for (bbidx = 0; bbidx < bbatt_list->len; bbidx++) { | |
1047 | if (lo->rebuild) { | |
1048 | #if B43_CALIB_ALL_LOCTLS | |
1049 | ploctl = b43_get_lo_g_ctl(dev, | |
1050 | &rfatt_list->list[rfidx], | |
1051 | &bbatt_list->list[bbidx]); | |
1052 | #else | |
1053 | ploctl = b43_get_lo_g_ctl_nopadmix(dev, | |
1054 | &rfatt_list-> | |
1055 | list[rfidx], | |
1056 | &bbatt_list-> | |
1057 | list[bbidx]); | |
1058 | #endif | |
1059 | } else { | |
1060 | ploctl = b43_get_lo_g_ctl(dev, | |
1061 | &rfatt_list->list[rfidx], | |
1062 | &bbatt_list->list[bbidx]); | |
1063 | if (!ploctl->used) | |
1064 | continue; | |
1065 | } | |
1066 | memcpy(&loctl, ploctl, sizeof(loctl)); | |
1067 | loctl.i = 0; | |
1068 | loctl.q = 0; | |
1069 | ||
1070 | max_rx_gain = rfatt_list->list[rfidx].att * 2; | |
1071 | max_rx_gain += bbatt_list->list[bbidx].att / 2; | |
1072 | if (rfatt_list->list[rfidx].with_padmix) | |
1073 | max_rx_gain -= pad_mix_gain; | |
1074 | if (has_loopback_gain(phy)) | |
1075 | max_rx_gain += phy->max_lb_gain; | |
1076 | lo_measure_gain_values(dev, max_rx_gain, | |
1077 | has_loopback_gain(phy)); | |
1078 | ||
1079 | b43_phy_set_baseband_attenuation(dev, | |
1080 | bbatt_list->list[bbidx].att); | |
1081 | lo_probe_loctls_statemachine(dev, &loctl, &max_rx_gain); | |
1082 | if (phy->type == B43_PHYTYPE_B) { | |
1083 | loctl.i++; | |
1084 | loctl.q++; | |
1085 | } | |
1086 | b43_loctl_set_calibrated(&loctl, 1); | |
1087 | memcpy(ploctl, &loctl, sizeof(loctl)); | |
1088 | } | |
1089 | } | |
1090 | } | |
1091 | ||
1092 | #if B43_DEBUG | |
1093 | static void do_validate_loctl(struct b43_wldev *dev, struct b43_loctl *control) | |
1094 | { | |
1095 | const int is_initializing = (b43_status(dev) == B43_STAT_UNINIT); | |
1096 | int i = control->i; | |
1097 | int q = control->q; | |
1098 | ||
1099 | if (b43_loctl_is_calibrated(control)) { | |
1100 | if ((abs(i) > 16) || (abs(q) > 16)) | |
1101 | goto error; | |
1102 | } else { | |
1103 | if (control->used) | |
1104 | goto error; | |
1105 | if (dev->phy.lo_control->rebuild) { | |
1106 | control->i = 0; | |
1107 | control->q = 0; | |
1108 | if ((i != B43_LOCTL_POISON) || | |
1109 | (q != B43_LOCTL_POISON)) | |
1110 | goto error; | |
1111 | } | |
1112 | } | |
1113 | if (is_initializing && control->used) | |
1114 | goto error; | |
1115 | ||
1116 | return; | |
1117 | error: | |
1118 | b43err(dev->wl, "LO control pair validation failed " | |
1119 | "(I: %d, Q: %d, used %u, calib: %u, initing: %d)\n", | |
1120 | i, q, control->used, | |
1121 | b43_loctl_is_calibrated(control), | |
1122 | is_initializing); | |
1123 | } | |
1124 | ||
1125 | static void validate_all_loctls(struct b43_wldev *dev) | |
1126 | { | |
1127 | b43_call_for_each_loctl(dev, do_validate_loctl); | |
1128 | } | |
1129 | ||
1130 | static void do_reset_calib(struct b43_wldev *dev, struct b43_loctl *control) | |
1131 | { | |
1132 | if (dev->phy.lo_control->rebuild || | |
1133 | control->used) { | |
1134 | b43_loctl_set_calibrated(control, 0); | |
1135 | control->i = B43_LOCTL_POISON; | |
1136 | control->q = B43_LOCTL_POISON; | |
1137 | } | |
1138 | } | |
1139 | ||
1140 | static void reset_all_loctl_calibration_states(struct b43_wldev *dev) | |
1141 | { | |
1142 | b43_call_for_each_loctl(dev, do_reset_calib); | |
1143 | } | |
1144 | ||
1145 | #else /* B43_DEBUG */ | |
1146 | static inline void validate_all_loctls(struct b43_wldev *dev) { } | |
1147 | static inline void reset_all_loctl_calibration_states(struct b43_wldev *dev) { } | |
1148 | #endif /* B43_DEBUG */ | |
1149 | ||
1150 | void b43_lo_g_measure(struct b43_wldev *dev) | |
1151 | { | |
1152 | struct b43_phy *phy = &dev->phy; | |
1153 | struct lo_g_saved_values uninitialized_var(sav); | |
1154 | ||
1155 | B43_WARN_ON((phy->type != B43_PHYTYPE_B) && | |
1156 | (phy->type != B43_PHYTYPE_G)); | |
1157 | ||
1158 | sav.old_channel = phy->channel; | |
1159 | lo_measure_setup(dev, &sav); | |
1160 | reset_all_loctl_calibration_states(dev); | |
1161 | lo_measure(dev); | |
1162 | lo_measure_restore(dev, &sav); | |
1163 | ||
1164 | validate_all_loctls(dev); | |
1165 | ||
1166 | phy->lo_control->lo_measured = 1; | |
1167 | phy->lo_control->rebuild = 0; | |
1168 | } | |
1169 | ||
1170 | #if B43_DEBUG | |
1171 | static void validate_loctl_calibration(struct b43_wldev *dev, | |
1172 | struct b43_loctl *loctl, | |
1173 | struct b43_rfatt *rfatt, | |
1174 | struct b43_bbatt *bbatt) | |
1175 | { | |
1176 | if (b43_loctl_is_calibrated(loctl)) | |
1177 | return; | |
1178 | if (!dev->phy.lo_control->lo_measured) { | |
1179 | /* On init we set the attenuation values before we | |
1180 | * calibrated the LO. I guess that's OK. */ | |
1181 | return; | |
1182 | } | |
1183 | b43err(dev->wl, "Adjusting Local Oscillator to an uncalibrated " | |
1184 | "control pair: rfatt=%u,%spadmix bbatt=%u\n", | |
1185 | rfatt->att, | |
1186 | (rfatt->with_padmix) ? "" : "no-", | |
1187 | bbatt->att); | |
1188 | } | |
1189 | #else | |
1190 | static inline void validate_loctl_calibration(struct b43_wldev *dev, | |
1191 | struct b43_loctl *loctl, | |
1192 | struct b43_rfatt *rfatt, | |
1193 | struct b43_bbatt *bbatt) | |
1194 | { | |
1195 | } | |
1196 | #endif | |
1197 | ||
1198 | static inline void fixup_rfatt_for_txcontrol(struct b43_rfatt *rf, | |
1199 | u8 tx_control) | |
1200 | { | |
1201 | if (tx_control & B43_TXCTL_TXMIX) { | |
1202 | if (rf->att < 5) | |
1203 | rf->att = 4; | |
1204 | } | |
1205 | } | |
1206 | ||
1207 | void b43_lo_g_adjust(struct b43_wldev *dev) | |
1208 | { | |
1209 | struct b43_phy *phy = &dev->phy; | |
1210 | struct b43_rfatt rf; | |
1211 | struct b43_loctl *loctl; | |
1212 | ||
1213 | memcpy(&rf, &phy->rfatt, sizeof(rf)); | |
1214 | fixup_rfatt_for_txcontrol(&rf, phy->tx_control); | |
1215 | ||
1216 | loctl = b43_get_lo_g_ctl(dev, &rf, &phy->bbatt); | |
1217 | validate_loctl_calibration(dev, loctl, &rf, &phy->bbatt); | |
1218 | b43_lo_write(dev, loctl); | |
1219 | } | |
1220 | ||
1221 | void b43_lo_g_adjust_to(struct b43_wldev *dev, | |
1222 | u16 rfatt, u16 bbatt, u16 tx_control) | |
1223 | { | |
1224 | struct b43_rfatt rf; | |
1225 | struct b43_bbatt bb; | |
1226 | struct b43_loctl *loctl; | |
1227 | ||
1228 | memset(&rf, 0, sizeof(rf)); | |
1229 | memset(&bb, 0, sizeof(bb)); | |
1230 | rf.att = rfatt; | |
1231 | bb.att = bbatt; | |
1232 | fixup_rfatt_for_txcontrol(&rf, tx_control); | |
1233 | loctl = b43_get_lo_g_ctl(dev, &rf, &bb); | |
1234 | validate_loctl_calibration(dev, loctl, &rf, &bb); | |
1235 | b43_lo_write(dev, loctl); | |
1236 | } | |
1237 | ||
1238 | static void do_mark_unused(struct b43_wldev *dev, struct b43_loctl *control) | |
1239 | { | |
1240 | control->used = 0; | |
1241 | } | |
1242 | ||
1243 | void b43_lo_g_ctl_mark_all_unused(struct b43_wldev *dev) | |
1244 | { | |
1245 | struct b43_phy *phy = &dev->phy; | |
1246 | struct b43_txpower_lo_control *lo = phy->lo_control; | |
1247 | ||
1248 | b43_call_for_each_loctl(dev, do_mark_unused); | |
1249 | lo->rebuild = 1; | |
1250 | } | |
1251 | ||
1252 | void b43_lo_g_ctl_mark_cur_used(struct b43_wldev *dev) | |
1253 | { | |
1254 | struct b43_phy *phy = &dev->phy; | |
1255 | struct b43_rfatt rf; | |
1256 | ||
1257 | memcpy(&rf, &phy->rfatt, sizeof(rf)); | |
1258 | fixup_rfatt_for_txcontrol(&rf, phy->tx_control); | |
1259 | ||
1260 | b43_get_lo_g_ctl(dev, &rf, &phy->bbatt)->used = 1; | |
1261 | } |