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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>, | |
1f21ad2a | 8 | Copyright (c) 2005, 2006 Stefano Brivio <stefano.brivio@polimi.it> |
e4d6b795 MB |
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 | ||
f5eda47f MB |
39 | static struct b43_lo_calib * b43_find_lo_calib(struct b43_txpower_lo_control *lo, |
40 | const struct b43_bbatt *bbatt, | |
41 | const struct b43_rfatt *rfatt) | |
42 | { | |
43 | struct b43_lo_calib *c; | |
44 | ||
45 | list_for_each_entry(c, &lo->calib_list, list) { | |
46 | if (!b43_compare_bbatt(&c->bbatt, bbatt)) | |
47 | continue; | |
48 | if (!b43_compare_rfatt(&c->rfatt, rfatt)) | |
49 | continue; | |
50 | return c; | |
51 | } | |
e4d6b795 | 52 | |
f5eda47f MB |
53 | return NULL; |
54 | } | |
e4d6b795 MB |
55 | |
56 | /* Write the LocalOscillator Control (adjust) value-pair. */ | |
57 | static void b43_lo_write(struct b43_wldev *dev, struct b43_loctl *control) | |
58 | { | |
59 | struct b43_phy *phy = &dev->phy; | |
60 | u16 value; | |
e4d6b795 MB |
61 | |
62 | if (B43_DEBUG) { | |
63 | if (unlikely(abs(control->i) > 16 || abs(control->q) > 16)) { | |
64 | b43dbg(dev->wl, "Invalid LO control pair " | |
65 | "(I: %d, Q: %d)\n", control->i, control->q); | |
66 | dump_stack(); | |
67 | return; | |
68 | } | |
69 | } | |
f4440e8a | 70 | B43_WARN_ON(phy->type != B43_PHYTYPE_G); |
e4d6b795 MB |
71 | |
72 | value = (u8) (control->q); | |
73 | value |= ((u8) (control->i)) << 8; | |
f4440e8a | 74 | b43_phy_write(dev, B43_PHY_LO_CTL, value); |
e4d6b795 MB |
75 | } |
76 | ||
e4d6b795 MB |
77 | static u16 lo_measure_feedthrough(struct b43_wldev *dev, |
78 | u16 lna, u16 pga, u16 trsw_rx) | |
79 | { | |
80 | struct b43_phy *phy = &dev->phy; | |
81 | u16 rfover; | |
82 | u16 feedthrough; | |
83 | ||
84 | if (phy->gmode) { | |
85 | lna <<= B43_PHY_RFOVERVAL_LNA_SHIFT; | |
86 | pga <<= B43_PHY_RFOVERVAL_PGA_SHIFT; | |
87 | ||
88 | B43_WARN_ON(lna & ~B43_PHY_RFOVERVAL_LNA); | |
89 | B43_WARN_ON(pga & ~B43_PHY_RFOVERVAL_PGA); | |
90 | /*FIXME This assertion fails B43_WARN_ON(trsw_rx & ~(B43_PHY_RFOVERVAL_TRSWRX | | |
91 | B43_PHY_RFOVERVAL_BW)); | |
92 | */ | |
93 | trsw_rx &= (B43_PHY_RFOVERVAL_TRSWRX | B43_PHY_RFOVERVAL_BW); | |
94 | ||
95 | /* Construct the RF Override Value */ | |
96 | rfover = B43_PHY_RFOVERVAL_UNK; | |
97 | rfover |= pga; | |
98 | rfover |= lna; | |
99 | rfover |= trsw_rx; | |
95de2841 LF |
100 | if ((dev->dev->bus->sprom.boardflags_lo & B43_BFL_EXTLNA) |
101 | && phy->rev > 6) | |
e4d6b795 MB |
102 | rfover |= B43_PHY_RFOVERVAL_EXTLNA; |
103 | ||
104 | b43_phy_write(dev, B43_PHY_PGACTL, 0xE300); | |
105 | b43_phy_write(dev, B43_PHY_RFOVERVAL, rfover); | |
106 | udelay(10); | |
107 | rfover |= B43_PHY_RFOVERVAL_BW_LBW; | |
108 | b43_phy_write(dev, B43_PHY_RFOVERVAL, rfover); | |
109 | udelay(10); | |
110 | rfover |= B43_PHY_RFOVERVAL_BW_LPF; | |
111 | b43_phy_write(dev, B43_PHY_RFOVERVAL, rfover); | |
112 | udelay(10); | |
113 | b43_phy_write(dev, B43_PHY_PGACTL, 0xF300); | |
114 | } else { | |
115 | pga |= B43_PHY_PGACTL_UNKNOWN; | |
116 | b43_phy_write(dev, B43_PHY_PGACTL, pga); | |
117 | udelay(10); | |
118 | pga |= B43_PHY_PGACTL_LOWBANDW; | |
119 | b43_phy_write(dev, B43_PHY_PGACTL, pga); | |
120 | udelay(10); | |
121 | pga |= B43_PHY_PGACTL_LPF; | |
122 | b43_phy_write(dev, B43_PHY_PGACTL, pga); | |
123 | } | |
124 | udelay(21); | |
125 | feedthrough = b43_phy_read(dev, B43_PHY_LO_LEAKAGE); | |
126 | ||
127 | /* This is a good place to check if we need to relax a bit, | |
128 | * as this is the main function called regularly | |
129 | * in the LO calibration. */ | |
130 | cond_resched(); | |
131 | ||
132 | return feedthrough; | |
133 | } | |
134 | ||
135 | /* TXCTL Register and Value Table. | |
136 | * Returns the "TXCTL Register". | |
137 | * "value" is the "TXCTL Value". | |
138 | * "pad_mix_gain" is the PAD Mixer Gain. | |
139 | */ | |
140 | static u16 lo_txctl_register_table(struct b43_wldev *dev, | |
141 | u16 * value, u16 * pad_mix_gain) | |
142 | { | |
143 | struct b43_phy *phy = &dev->phy; | |
144 | u16 reg, v, padmix; | |
145 | ||
146 | if (phy->type == B43_PHYTYPE_B) { | |
147 | v = 0x30; | |
148 | if (phy->radio_rev <= 5) { | |
149 | reg = 0x43; | |
150 | padmix = 0; | |
151 | } else { | |
152 | reg = 0x52; | |
153 | padmix = 5; | |
154 | } | |
155 | } else { | |
156 | if (phy->rev >= 2 && phy->radio_rev == 8) { | |
157 | reg = 0x43; | |
158 | v = 0x10; | |
159 | padmix = 2; | |
160 | } else { | |
161 | reg = 0x52; | |
162 | v = 0x30; | |
163 | padmix = 5; | |
164 | } | |
165 | } | |
166 | if (value) | |
167 | *value = v; | |
168 | if (pad_mix_gain) | |
169 | *pad_mix_gain = padmix; | |
170 | ||
171 | return reg; | |
172 | } | |
173 | ||
174 | static void lo_measure_txctl_values(struct b43_wldev *dev) | |
175 | { | |
176 | struct b43_phy *phy = &dev->phy; | |
177 | struct b43_txpower_lo_control *lo = phy->lo_control; | |
178 | u16 reg, mask; | |
179 | u16 trsw_rx, pga; | |
180 | u16 radio_pctl_reg; | |
181 | ||
182 | static const u8 tx_bias_values[] = { | |
183 | 0x09, 0x08, 0x0A, 0x01, 0x00, | |
184 | 0x02, 0x05, 0x04, 0x06, | |
185 | }; | |
186 | static const u8 tx_magn_values[] = { | |
187 | 0x70, 0x40, | |
188 | }; | |
189 | ||
190 | if (!has_loopback_gain(phy)) { | |
191 | radio_pctl_reg = 6; | |
192 | trsw_rx = 2; | |
193 | pga = 0; | |
194 | } else { | |
195 | int lb_gain; /* Loopback gain (in dB) */ | |
196 | ||
197 | trsw_rx = 0; | |
198 | lb_gain = phy->max_lb_gain / 2; | |
199 | if (lb_gain > 10) { | |
200 | radio_pctl_reg = 0; | |
201 | pga = abs(10 - lb_gain) / 6; | |
202 | pga = limit_value(pga, 0, 15); | |
203 | } else { | |
204 | int cmp_val; | |
205 | int tmp; | |
206 | ||
207 | pga = 0; | |
208 | cmp_val = 0x24; | |
209 | if ((phy->rev >= 2) && | |
210 | (phy->radio_ver == 0x2050) && (phy->radio_rev == 8)) | |
211 | cmp_val = 0x3C; | |
212 | tmp = lb_gain; | |
213 | if ((10 - lb_gain) < cmp_val) | |
214 | tmp = (10 - lb_gain); | |
215 | if (tmp < 0) | |
216 | tmp += 6; | |
217 | else | |
218 | tmp += 3; | |
219 | cmp_val /= 4; | |
220 | tmp /= 4; | |
221 | if (tmp >= cmp_val) | |
222 | radio_pctl_reg = cmp_val; | |
223 | else | |
224 | radio_pctl_reg = tmp; | |
225 | } | |
226 | } | |
227 | b43_radio_write16(dev, 0x43, (b43_radio_read16(dev, 0x43) | |
228 | & 0xFFF0) | radio_pctl_reg); | |
229 | b43_phy_set_baseband_attenuation(dev, 2); | |
230 | ||
231 | reg = lo_txctl_register_table(dev, &mask, NULL); | |
232 | mask = ~mask; | |
233 | b43_radio_write16(dev, reg, b43_radio_read16(dev, reg) | |
234 | & mask); | |
235 | ||
236 | if (has_tx_magnification(phy)) { | |
237 | int i, j; | |
238 | int feedthrough; | |
239 | int min_feedth = 0xFFFF; | |
240 | u8 tx_magn, tx_bias; | |
241 | ||
242 | for (i = 0; i < ARRAY_SIZE(tx_magn_values); i++) { | |
243 | tx_magn = tx_magn_values[i]; | |
244 | b43_radio_write16(dev, 0x52, | |
245 | (b43_radio_read16(dev, 0x52) | |
246 | & 0xFF0F) | tx_magn); | |
247 | for (j = 0; j < ARRAY_SIZE(tx_bias_values); j++) { | |
248 | tx_bias = tx_bias_values[j]; | |
249 | b43_radio_write16(dev, 0x52, | |
250 | (b43_radio_read16(dev, 0x52) | |
251 | & 0xFFF0) | tx_bias); | |
252 | feedthrough = | |
253 | lo_measure_feedthrough(dev, 0, pga, | |
254 | trsw_rx); | |
255 | if (feedthrough < min_feedth) { | |
256 | lo->tx_bias = tx_bias; | |
257 | lo->tx_magn = tx_magn; | |
258 | min_feedth = feedthrough; | |
259 | } | |
260 | if (lo->tx_bias == 0) | |
261 | break; | |
262 | } | |
263 | b43_radio_write16(dev, 0x52, | |
264 | (b43_radio_read16(dev, 0x52) | |
265 | & 0xFF00) | lo->tx_bias | lo-> | |
266 | tx_magn); | |
267 | } | |
268 | } else { | |
269 | lo->tx_magn = 0; | |
270 | lo->tx_bias = 0; | |
271 | b43_radio_write16(dev, 0x52, b43_radio_read16(dev, 0x52) | |
272 | & 0xFFF0); /* TX bias == 0 */ | |
273 | } | |
f5eda47f | 274 | lo->txctl_measured_time = jiffies; |
e4d6b795 MB |
275 | } |
276 | ||
277 | static void lo_read_power_vector(struct b43_wldev *dev) | |
278 | { | |
279 | struct b43_phy *phy = &dev->phy; | |
280 | struct b43_txpower_lo_control *lo = phy->lo_control; | |
f5eda47f | 281 | int i; |
e4d6b795 MB |
282 | u64 tmp; |
283 | u64 power_vector = 0; | |
e4d6b795 MB |
284 | |
285 | for (i = 0; i < 8; i += 2) { | |
286 | tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x310 + i); | |
e4d6b795 MB |
287 | power_vector |= (tmp << (i * 8)); |
288 | /* Clear the vector on the device. */ | |
289 | b43_shm_write16(dev, B43_SHM_SHARED, 0x310 + i, 0); | |
290 | } | |
e4d6b795 MB |
291 | if (power_vector) |
292 | lo->power_vector = power_vector; | |
f5eda47f | 293 | lo->pwr_vec_read_time = jiffies; |
e4d6b795 MB |
294 | } |
295 | ||
296 | /* 802.11/LO/GPHY/MeasuringGains */ | |
297 | static void lo_measure_gain_values(struct b43_wldev *dev, | |
298 | s16 max_rx_gain, int use_trsw_rx) | |
299 | { | |
300 | struct b43_phy *phy = &dev->phy; | |
301 | u16 tmp; | |
302 | ||
303 | if (max_rx_gain < 0) | |
304 | max_rx_gain = 0; | |
305 | ||
306 | if (has_loopback_gain(phy)) { | |
307 | int trsw_rx = 0; | |
308 | int trsw_rx_gain; | |
309 | ||
310 | if (use_trsw_rx) { | |
311 | trsw_rx_gain = phy->trsw_rx_gain / 2; | |
312 | if (max_rx_gain >= trsw_rx_gain) { | |
313 | trsw_rx_gain = max_rx_gain - trsw_rx_gain; | |
314 | trsw_rx = 0x20; | |
315 | } | |
316 | } else | |
317 | trsw_rx_gain = max_rx_gain; | |
318 | if (trsw_rx_gain < 9) { | |
319 | phy->lna_lod_gain = 0; | |
320 | } else { | |
321 | phy->lna_lod_gain = 1; | |
322 | trsw_rx_gain -= 8; | |
323 | } | |
324 | trsw_rx_gain = limit_value(trsw_rx_gain, 0, 0x2D); | |
325 | phy->pga_gain = trsw_rx_gain / 3; | |
326 | if (phy->pga_gain >= 5) { | |
327 | phy->pga_gain -= 5; | |
328 | phy->lna_gain = 2; | |
329 | } else | |
330 | phy->lna_gain = 0; | |
331 | } else { | |
332 | phy->lna_gain = 0; | |
333 | phy->trsw_rx_gain = 0x20; | |
334 | if (max_rx_gain >= 0x14) { | |
335 | phy->lna_lod_gain = 1; | |
336 | phy->pga_gain = 2; | |
337 | } else if (max_rx_gain >= 0x12) { | |
338 | phy->lna_lod_gain = 1; | |
339 | phy->pga_gain = 1; | |
340 | } else if (max_rx_gain >= 0xF) { | |
341 | phy->lna_lod_gain = 1; | |
342 | phy->pga_gain = 0; | |
343 | } else { | |
344 | phy->lna_lod_gain = 0; | |
345 | phy->pga_gain = 0; | |
346 | } | |
347 | } | |
348 | ||
349 | tmp = b43_radio_read16(dev, 0x7A); | |
350 | if (phy->lna_lod_gain == 0) | |
351 | tmp &= ~0x0008; | |
352 | else | |
353 | tmp |= 0x0008; | |
354 | b43_radio_write16(dev, 0x7A, tmp); | |
355 | } | |
356 | ||
357 | struct lo_g_saved_values { | |
358 | u8 old_channel; | |
359 | ||
360 | /* Core registers */ | |
361 | u16 reg_3F4; | |
362 | u16 reg_3E2; | |
363 | ||
364 | /* PHY registers */ | |
365 | u16 phy_lo_mask; | |
366 | u16 phy_extg_01; | |
367 | u16 phy_dacctl_hwpctl; | |
368 | u16 phy_dacctl; | |
5250703e | 369 | u16 phy_cck_14; |
e4d6b795 MB |
370 | u16 phy_hpwr_tssictl; |
371 | u16 phy_analogover; | |
372 | u16 phy_analogoverval; | |
373 | u16 phy_rfover; | |
374 | u16 phy_rfoverval; | |
375 | u16 phy_classctl; | |
5250703e | 376 | u16 phy_cck_3E; |
e4d6b795 MB |
377 | u16 phy_crs0; |
378 | u16 phy_pgactl; | |
5250703e | 379 | u16 phy_cck_2A; |
e4d6b795 | 380 | u16 phy_syncctl; |
5250703e MB |
381 | u16 phy_cck_30; |
382 | u16 phy_cck_06; | |
e4d6b795 MB |
383 | |
384 | /* Radio registers */ | |
385 | u16 radio_43; | |
386 | u16 radio_7A; | |
387 | u16 radio_52; | |
388 | }; | |
389 | ||
390 | static void lo_measure_setup(struct b43_wldev *dev, | |
391 | struct lo_g_saved_values *sav) | |
392 | { | |
393 | struct ssb_sprom *sprom = &dev->dev->bus->sprom; | |
394 | struct b43_phy *phy = &dev->phy; | |
395 | struct b43_txpower_lo_control *lo = phy->lo_control; | |
396 | u16 tmp; | |
397 | ||
398 | if (b43_has_hardware_pctl(phy)) { | |
399 | sav->phy_lo_mask = b43_phy_read(dev, B43_PHY_LO_MASK); | |
400 | sav->phy_extg_01 = b43_phy_read(dev, B43_PHY_EXTG(0x01)); | |
401 | sav->phy_dacctl_hwpctl = b43_phy_read(dev, B43_PHY_DACCTL); | |
5250703e | 402 | sav->phy_cck_14 = b43_phy_read(dev, B43_PHY_CCK(0x14)); |
e4d6b795 MB |
403 | sav->phy_hpwr_tssictl = b43_phy_read(dev, B43_PHY_HPWR_TSSICTL); |
404 | ||
405 | b43_phy_write(dev, B43_PHY_HPWR_TSSICTL, | |
406 | b43_phy_read(dev, B43_PHY_HPWR_TSSICTL) | |
407 | | 0x100); | |
408 | b43_phy_write(dev, B43_PHY_EXTG(0x01), | |
409 | b43_phy_read(dev, B43_PHY_EXTG(0x01)) | |
410 | | 0x40); | |
411 | b43_phy_write(dev, B43_PHY_DACCTL, | |
412 | b43_phy_read(dev, B43_PHY_DACCTL) | |
413 | | 0x40); | |
5250703e MB |
414 | b43_phy_write(dev, B43_PHY_CCK(0x14), |
415 | b43_phy_read(dev, B43_PHY_CCK(0x14)) | |
e4d6b795 MB |
416 | | 0x200); |
417 | } | |
418 | if (phy->type == B43_PHYTYPE_B && | |
419 | phy->radio_ver == 0x2050 && phy->radio_rev < 6) { | |
5250703e MB |
420 | b43_phy_write(dev, B43_PHY_CCK(0x16), 0x410); |
421 | b43_phy_write(dev, B43_PHY_CCK(0x17), 0x820); | |
e4d6b795 | 422 | } |
e4d6b795 MB |
423 | if (phy->rev >= 2) { |
424 | sav->phy_analogover = b43_phy_read(dev, B43_PHY_ANALOGOVER); | |
425 | sav->phy_analogoverval = | |
426 | b43_phy_read(dev, B43_PHY_ANALOGOVERVAL); | |
427 | sav->phy_rfover = b43_phy_read(dev, B43_PHY_RFOVER); | |
428 | sav->phy_rfoverval = b43_phy_read(dev, B43_PHY_RFOVERVAL); | |
429 | sav->phy_classctl = b43_phy_read(dev, B43_PHY_CLASSCTL); | |
5250703e | 430 | sav->phy_cck_3E = b43_phy_read(dev, B43_PHY_CCK(0x3E)); |
e4d6b795 MB |
431 | sav->phy_crs0 = b43_phy_read(dev, B43_PHY_CRS0); |
432 | ||
433 | b43_phy_write(dev, B43_PHY_CLASSCTL, | |
434 | b43_phy_read(dev, B43_PHY_CLASSCTL) | |
435 | & 0xFFFC); | |
436 | b43_phy_write(dev, B43_PHY_CRS0, b43_phy_read(dev, B43_PHY_CRS0) | |
437 | & 0x7FFF); | |
438 | b43_phy_write(dev, B43_PHY_ANALOGOVER, | |
439 | b43_phy_read(dev, B43_PHY_ANALOGOVER) | |
440 | | 0x0003); | |
441 | b43_phy_write(dev, B43_PHY_ANALOGOVERVAL, | |
442 | b43_phy_read(dev, B43_PHY_ANALOGOVERVAL) | |
443 | & 0xFFFC); | |
444 | if (phy->type == B43_PHYTYPE_G) { | |
445 | if ((phy->rev >= 7) && | |
95de2841 | 446 | (sprom->boardflags_lo & B43_BFL_EXTLNA)) { |
e4d6b795 MB |
447 | b43_phy_write(dev, B43_PHY_RFOVER, 0x933); |
448 | } else { | |
449 | b43_phy_write(dev, B43_PHY_RFOVER, 0x133); | |
450 | } | |
451 | } else { | |
452 | b43_phy_write(dev, B43_PHY_RFOVER, 0); | |
453 | } | |
5250703e | 454 | b43_phy_write(dev, B43_PHY_CCK(0x3E), 0); |
e4d6b795 MB |
455 | } |
456 | sav->reg_3F4 = b43_read16(dev, 0x3F4); | |
457 | sav->reg_3E2 = b43_read16(dev, 0x3E2); | |
458 | sav->radio_43 = b43_radio_read16(dev, 0x43); | |
459 | sav->radio_7A = b43_radio_read16(dev, 0x7A); | |
460 | sav->phy_pgactl = b43_phy_read(dev, B43_PHY_PGACTL); | |
5250703e | 461 | sav->phy_cck_2A = b43_phy_read(dev, B43_PHY_CCK(0x2A)); |
e4d6b795 MB |
462 | sav->phy_syncctl = b43_phy_read(dev, B43_PHY_SYNCCTL); |
463 | sav->phy_dacctl = b43_phy_read(dev, B43_PHY_DACCTL); | |
464 | ||
465 | if (!has_tx_magnification(phy)) { | |
466 | sav->radio_52 = b43_radio_read16(dev, 0x52); | |
467 | sav->radio_52 &= 0x00F0; | |
468 | } | |
469 | if (phy->type == B43_PHYTYPE_B) { | |
5250703e MB |
470 | sav->phy_cck_30 = b43_phy_read(dev, B43_PHY_CCK(0x30)); |
471 | sav->phy_cck_06 = b43_phy_read(dev, B43_PHY_CCK(0x06)); | |
472 | b43_phy_write(dev, B43_PHY_CCK(0x30), 0x00FF); | |
473 | b43_phy_write(dev, B43_PHY_CCK(0x06), 0x3F3F); | |
e4d6b795 MB |
474 | } else { |
475 | b43_write16(dev, 0x3E2, b43_read16(dev, 0x3E2) | |
476 | | 0x8000); | |
477 | } | |
478 | b43_write16(dev, 0x3F4, b43_read16(dev, 0x3F4) | |
479 | & 0xF000); | |
480 | ||
481 | tmp = | |
5250703e | 482 | (phy->type == B43_PHYTYPE_G) ? B43_PHY_LO_MASK : B43_PHY_CCK(0x2E); |
e4d6b795 MB |
483 | b43_phy_write(dev, tmp, 0x007F); |
484 | ||
485 | tmp = sav->phy_syncctl; | |
486 | b43_phy_write(dev, B43_PHY_SYNCCTL, tmp & 0xFF7F); | |
487 | tmp = sav->radio_7A; | |
488 | b43_radio_write16(dev, 0x007A, tmp & 0xFFF0); | |
489 | ||
5250703e | 490 | b43_phy_write(dev, B43_PHY_CCK(0x2A), 0x8A3); |
e4d6b795 MB |
491 | if (phy->type == B43_PHYTYPE_G || |
492 | (phy->type == B43_PHYTYPE_B && | |
493 | phy->radio_ver == 0x2050 && phy->radio_rev >= 6)) { | |
5250703e | 494 | b43_phy_write(dev, B43_PHY_CCK(0x2B), 0x1003); |
e4d6b795 | 495 | } else |
5250703e | 496 | b43_phy_write(dev, B43_PHY_CCK(0x2B), 0x0802); |
e4d6b795 MB |
497 | if (phy->rev >= 2) |
498 | b43_dummy_transmission(dev); | |
499 | b43_radio_selectchannel(dev, 6, 0); | |
500 | b43_radio_read16(dev, 0x51); /* dummy read */ | |
501 | if (phy->type == B43_PHYTYPE_G) | |
5250703e | 502 | b43_phy_write(dev, B43_PHY_CCK(0x2F), 0); |
f5eda47f MB |
503 | |
504 | /* Re-measure the txctl values, if needed. */ | |
505 | if (time_before(lo->txctl_measured_time, | |
506 | jiffies - B43_LO_TXCTL_EXPIRE)) | |
e4d6b795 | 507 | lo_measure_txctl_values(dev); |
f5eda47f | 508 | |
e4d6b795 MB |
509 | if (phy->type == B43_PHYTYPE_G && phy->rev >= 3) { |
510 | b43_phy_write(dev, B43_PHY_LO_MASK, 0xC078); | |
511 | } else { | |
512 | if (phy->type == B43_PHYTYPE_B) | |
5250703e | 513 | b43_phy_write(dev, B43_PHY_CCK(0x2E), 0x8078); |
e4d6b795 MB |
514 | else |
515 | b43_phy_write(dev, B43_PHY_LO_MASK, 0x8078); | |
516 | } | |
517 | } | |
518 | ||
519 | static void lo_measure_restore(struct b43_wldev *dev, | |
520 | struct lo_g_saved_values *sav) | |
521 | { | |
522 | struct b43_phy *phy = &dev->phy; | |
e4d6b795 MB |
523 | u16 tmp; |
524 | ||
525 | if (phy->rev >= 2) { | |
526 | b43_phy_write(dev, B43_PHY_PGACTL, 0xE300); | |
527 | tmp = (phy->pga_gain << 8); | |
528 | b43_phy_write(dev, B43_PHY_RFOVERVAL, tmp | 0xA0); | |
529 | udelay(5); | |
530 | b43_phy_write(dev, B43_PHY_RFOVERVAL, tmp | 0xA2); | |
531 | udelay(2); | |
532 | b43_phy_write(dev, B43_PHY_RFOVERVAL, tmp | 0xA3); | |
533 | } else { | |
534 | tmp = (phy->pga_gain | 0xEFA0); | |
535 | b43_phy_write(dev, B43_PHY_PGACTL, tmp); | |
536 | } | |
e4d6b795 MB |
537 | if (phy->type == B43_PHYTYPE_G) { |
538 | if (phy->rev >= 3) | |
5250703e | 539 | b43_phy_write(dev, B43_PHY_CCK(0x2E), 0xC078); |
e4d6b795 | 540 | else |
5250703e | 541 | b43_phy_write(dev, B43_PHY_CCK(0x2E), 0x8078); |
e4d6b795 | 542 | if (phy->rev >= 2) |
5250703e | 543 | b43_phy_write(dev, B43_PHY_CCK(0x2F), 0x0202); |
e4d6b795 | 544 | else |
5250703e | 545 | b43_phy_write(dev, B43_PHY_CCK(0x2F), 0x0101); |
e4d6b795 MB |
546 | } |
547 | b43_write16(dev, 0x3F4, sav->reg_3F4); | |
548 | b43_phy_write(dev, B43_PHY_PGACTL, sav->phy_pgactl); | |
5250703e | 549 | b43_phy_write(dev, B43_PHY_CCK(0x2A), sav->phy_cck_2A); |
e4d6b795 MB |
550 | b43_phy_write(dev, B43_PHY_SYNCCTL, sav->phy_syncctl); |
551 | b43_phy_write(dev, B43_PHY_DACCTL, sav->phy_dacctl); | |
552 | b43_radio_write16(dev, 0x43, sav->radio_43); | |
553 | b43_radio_write16(dev, 0x7A, sav->radio_7A); | |
554 | if (!has_tx_magnification(phy)) { | |
555 | tmp = sav->radio_52; | |
556 | b43_radio_write16(dev, 0x52, (b43_radio_read16(dev, 0x52) | |
557 | & 0xFF0F) | tmp); | |
558 | } | |
559 | b43_write16(dev, 0x3E2, sav->reg_3E2); | |
560 | if (phy->type == B43_PHYTYPE_B && | |
561 | phy->radio_ver == 0x2050 && phy->radio_rev <= 5) { | |
5250703e MB |
562 | b43_phy_write(dev, B43_PHY_CCK(0x30), sav->phy_cck_30); |
563 | b43_phy_write(dev, B43_PHY_CCK(0x06), sav->phy_cck_06); | |
e4d6b795 MB |
564 | } |
565 | if (phy->rev >= 2) { | |
566 | b43_phy_write(dev, B43_PHY_ANALOGOVER, sav->phy_analogover); | |
567 | b43_phy_write(dev, B43_PHY_ANALOGOVERVAL, | |
568 | sav->phy_analogoverval); | |
569 | b43_phy_write(dev, B43_PHY_CLASSCTL, sav->phy_classctl); | |
570 | b43_phy_write(dev, B43_PHY_RFOVER, sav->phy_rfover); | |
571 | b43_phy_write(dev, B43_PHY_RFOVERVAL, sav->phy_rfoverval); | |
5250703e | 572 | b43_phy_write(dev, B43_PHY_CCK(0x3E), sav->phy_cck_3E); |
e4d6b795 MB |
573 | b43_phy_write(dev, B43_PHY_CRS0, sav->phy_crs0); |
574 | } | |
575 | if (b43_has_hardware_pctl(phy)) { | |
576 | tmp = (sav->phy_lo_mask & 0xBFFF); | |
577 | b43_phy_write(dev, B43_PHY_LO_MASK, tmp); | |
578 | b43_phy_write(dev, B43_PHY_EXTG(0x01), sav->phy_extg_01); | |
579 | b43_phy_write(dev, B43_PHY_DACCTL, sav->phy_dacctl_hwpctl); | |
5250703e | 580 | b43_phy_write(dev, B43_PHY_CCK(0x14), sav->phy_cck_14); |
e4d6b795 MB |
581 | b43_phy_write(dev, B43_PHY_HPWR_TSSICTL, sav->phy_hpwr_tssictl); |
582 | } | |
583 | b43_radio_selectchannel(dev, sav->old_channel, 1); | |
584 | } | |
585 | ||
586 | struct b43_lo_g_statemachine { | |
587 | int current_state; | |
588 | int nr_measured; | |
589 | int state_val_multiplier; | |
590 | u16 lowest_feedth; | |
591 | struct b43_loctl min_loctl; | |
592 | }; | |
593 | ||
594 | /* Loop over each possible value in this state. */ | |
595 | static int lo_probe_possible_loctls(struct b43_wldev *dev, | |
596 | struct b43_loctl *probe_loctl, | |
597 | struct b43_lo_g_statemachine *d) | |
598 | { | |
599 | struct b43_phy *phy = &dev->phy; | |
e4d6b795 MB |
600 | struct b43_loctl test_loctl; |
601 | struct b43_loctl orig_loctl; | |
602 | struct b43_loctl prev_loctl = { | |
603 | .i = -100, | |
604 | .q = -100, | |
605 | }; | |
606 | int i; | |
607 | int begin, end; | |
608 | int found_lower = 0; | |
609 | u16 feedth; | |
610 | ||
611 | static const struct b43_loctl modifiers[] = { | |
612 | {.i = 1,.q = 1,}, | |
613 | {.i = 1,.q = 0,}, | |
614 | {.i = 1,.q = -1,}, | |
615 | {.i = 0,.q = -1,}, | |
616 | {.i = -1,.q = -1,}, | |
617 | {.i = -1,.q = 0,}, | |
618 | {.i = -1,.q = 1,}, | |
619 | {.i = 0,.q = 1,}, | |
620 | }; | |
621 | ||
622 | if (d->current_state == 0) { | |
623 | begin = 1; | |
624 | end = 8; | |
625 | } else if (d->current_state % 2 == 0) { | |
626 | begin = d->current_state - 1; | |
627 | end = d->current_state + 1; | |
628 | } else { | |
629 | begin = d->current_state - 2; | |
630 | end = d->current_state + 2; | |
631 | } | |
632 | if (begin < 1) | |
633 | begin += 8; | |
634 | if (end > 8) | |
635 | end -= 8; | |
636 | ||
637 | memcpy(&orig_loctl, probe_loctl, sizeof(struct b43_loctl)); | |
638 | i = begin; | |
639 | d->current_state = i; | |
640 | while (1) { | |
641 | B43_WARN_ON(!(i >= 1 && i <= 8)); | |
642 | memcpy(&test_loctl, &orig_loctl, sizeof(struct b43_loctl)); | |
643 | test_loctl.i += modifiers[i - 1].i * d->state_val_multiplier; | |
644 | test_loctl.q += modifiers[i - 1].q * d->state_val_multiplier; | |
645 | if ((test_loctl.i != prev_loctl.i || | |
646 | test_loctl.q != prev_loctl.q) && | |
647 | (abs(test_loctl.i) <= 16 && abs(test_loctl.q) <= 16)) { | |
648 | b43_lo_write(dev, &test_loctl); | |
649 | feedth = lo_measure_feedthrough(dev, phy->lna_gain, | |
650 | phy->pga_gain, | |
651 | phy->trsw_rx_gain); | |
652 | if (feedth < d->lowest_feedth) { | |
653 | memcpy(probe_loctl, &test_loctl, | |
654 | sizeof(struct b43_loctl)); | |
655 | found_lower = 1; | |
656 | d->lowest_feedth = feedth; | |
657 | if ((d->nr_measured < 2) && | |
f5eda47f | 658 | !has_loopback_gain(phy)) |
e4d6b795 MB |
659 | break; |
660 | } | |
661 | } | |
662 | memcpy(&prev_loctl, &test_loctl, sizeof(prev_loctl)); | |
663 | if (i == end) | |
664 | break; | |
665 | if (i == 8) | |
666 | i = 1; | |
667 | else | |
668 | i++; | |
669 | d->current_state = i; | |
670 | } | |
671 | ||
672 | return found_lower; | |
673 | } | |
674 | ||
675 | static void lo_probe_loctls_statemachine(struct b43_wldev *dev, | |
676 | struct b43_loctl *loctl, | |
677 | int *max_rx_gain) | |
678 | { | |
679 | struct b43_phy *phy = &dev->phy; | |
e4d6b795 MB |
680 | struct b43_lo_g_statemachine d; |
681 | u16 feedth; | |
682 | int found_lower; | |
683 | struct b43_loctl probe_loctl; | |
684 | int max_repeat = 1, repeat_cnt = 0; | |
685 | ||
686 | d.nr_measured = 0; | |
687 | d.state_val_multiplier = 1; | |
f5eda47f | 688 | if (has_loopback_gain(phy)) |
e4d6b795 MB |
689 | d.state_val_multiplier = 3; |
690 | ||
691 | memcpy(&d.min_loctl, loctl, sizeof(struct b43_loctl)); | |
f5eda47f | 692 | if (has_loopback_gain(phy)) |
e4d6b795 MB |
693 | max_repeat = 4; |
694 | do { | |
695 | b43_lo_write(dev, &d.min_loctl); | |
696 | feedth = lo_measure_feedthrough(dev, phy->lna_gain, | |
697 | phy->pga_gain, | |
698 | phy->trsw_rx_gain); | |
f5eda47f | 699 | if (feedth < 0x258) { |
e4d6b795 MB |
700 | if (feedth >= 0x12C) |
701 | *max_rx_gain += 6; | |
702 | else | |
703 | *max_rx_gain += 3; | |
704 | feedth = lo_measure_feedthrough(dev, phy->lna_gain, | |
705 | phy->pga_gain, | |
706 | phy->trsw_rx_gain); | |
707 | } | |
708 | d.lowest_feedth = feedth; | |
709 | ||
710 | d.current_state = 0; | |
711 | do { | |
712 | B43_WARN_ON(! | |
713 | (d.current_state >= 0 | |
714 | && d.current_state <= 8)); | |
715 | memcpy(&probe_loctl, &d.min_loctl, | |
716 | sizeof(struct b43_loctl)); | |
717 | found_lower = | |
718 | lo_probe_possible_loctls(dev, &probe_loctl, &d); | |
719 | if (!found_lower) | |
720 | break; | |
721 | if ((probe_loctl.i == d.min_loctl.i) && | |
722 | (probe_loctl.q == d.min_loctl.q)) | |
723 | break; | |
724 | memcpy(&d.min_loctl, &probe_loctl, | |
725 | sizeof(struct b43_loctl)); | |
726 | d.nr_measured++; | |
727 | } while (d.nr_measured < 24); | |
728 | memcpy(loctl, &d.min_loctl, sizeof(struct b43_loctl)); | |
729 | ||
730 | if (has_loopback_gain(phy)) { | |
731 | if (d.lowest_feedth > 0x1194) | |
732 | *max_rx_gain -= 6; | |
733 | else if (d.lowest_feedth < 0x5DC) | |
734 | *max_rx_gain += 3; | |
735 | if (repeat_cnt == 0) { | |
736 | if (d.lowest_feedth <= 0x5DC) { | |
737 | d.state_val_multiplier = 1; | |
738 | repeat_cnt++; | |
739 | } else | |
740 | d.state_val_multiplier = 2; | |
741 | } else if (repeat_cnt == 2) | |
742 | d.state_val_multiplier = 1; | |
743 | } | |
744 | lo_measure_gain_values(dev, *max_rx_gain, | |
745 | has_loopback_gain(phy)); | |
746 | } while (++repeat_cnt < max_repeat); | |
747 | } | |
748 | ||
f5eda47f MB |
749 | static |
750 | struct b43_lo_calib * b43_calibrate_lo_setting(struct b43_wldev *dev, | |
751 | const struct b43_bbatt *bbatt, | |
752 | const struct b43_rfatt *rfatt) | |
e4d6b795 MB |
753 | { |
754 | struct b43_phy *phy = &dev->phy; | |
e4d6b795 MB |
755 | struct b43_loctl loctl = { |
756 | .i = 0, | |
757 | .q = 0, | |
758 | }; | |
e4d6b795 | 759 | int max_rx_gain; |
f5eda47f MB |
760 | struct b43_lo_calib *cal; |
761 | struct lo_g_saved_values uninitialized_var(saved_regs); | |
e4d6b795 MB |
762 | /* Values from the "TXCTL Register and Value Table" */ |
763 | u16 txctl_reg; | |
764 | u16 txctl_value; | |
765 | u16 pad_mix_gain; | |
766 | ||
f5eda47f MB |
767 | saved_regs.old_channel = phy->channel; |
768 | b43_mac_suspend(dev); | |
769 | lo_measure_setup(dev, &saved_regs); | |
e4d6b795 MB |
770 | |
771 | txctl_reg = lo_txctl_register_table(dev, &txctl_value, &pad_mix_gain); | |
772 | ||
f5eda47f MB |
773 | b43_radio_write16(dev, 0x43, |
774 | (b43_radio_read16(dev, 0x43) & 0xFFF0) | |
775 | | rfatt->att); | |
776 | b43_radio_write16(dev, txctl_reg, | |
777 | (b43_radio_read16(dev, txctl_reg) & ~txctl_value) | |
778 | | (rfatt->with_padmix) ? txctl_value : 0); | |
e4d6b795 | 779 | |
f5eda47f MB |
780 | max_rx_gain = rfatt->att * 2; |
781 | max_rx_gain += bbatt->att / 2; | |
782 | if (rfatt->with_padmix) | |
783 | max_rx_gain -= pad_mix_gain; | |
784 | if (has_loopback_gain(phy)) | |
785 | max_rx_gain += phy->max_lb_gain; | |
786 | lo_measure_gain_values(dev, max_rx_gain, | |
787 | has_loopback_gain(phy)); | |
788 | ||
789 | b43_phy_set_baseband_attenuation(dev, bbatt->att); | |
790 | lo_probe_loctls_statemachine(dev, &loctl, &max_rx_gain); | |
791 | ||
792 | lo_measure_restore(dev, &saved_regs); | |
793 | b43_mac_enable(dev); | |
794 | ||
795 | if (b43_debug(dev, B43_DBG_LO)) { | |
796 | b43dbg(dev->wl, "LO: Calibrated for BB(%u), RF(%u,%u) " | |
797 | "=> I=%d Q=%d\n", | |
798 | bbatt->att, rfatt->att, rfatt->with_padmix, | |
799 | loctl.i, loctl.q); | |
e4d6b795 | 800 | } |
e4d6b795 | 801 | |
f5eda47f MB |
802 | cal = kmalloc(sizeof(*cal), GFP_KERNEL); |
803 | if (!cal) { | |
804 | b43warn(dev->wl, "LO calib: out of memory\n"); | |
805 | return NULL; | |
e4d6b795 | 806 | } |
f5eda47f MB |
807 | memcpy(&cal->bbatt, bbatt, sizeof(*bbatt)); |
808 | memcpy(&cal->rfatt, rfatt, sizeof(*rfatt)); | |
809 | memcpy(&cal->ctl, &loctl, sizeof(loctl)); | |
810 | cal->calib_time = jiffies; | |
811 | INIT_LIST_HEAD(&cal->list); | |
812 | ||
813 | return cal; | |
e4d6b795 MB |
814 | } |
815 | ||
f5eda47f MB |
816 | /* Get a calibrated LO setting for the given attenuation values. |
817 | * Might return a NULL pointer under OOM! */ | |
818 | static | |
819 | struct b43_lo_calib * b43_get_calib_lo_settings(struct b43_wldev *dev, | |
820 | const struct b43_bbatt *bbatt, | |
821 | const struct b43_rfatt *rfatt) | |
e4d6b795 | 822 | { |
f5eda47f MB |
823 | struct b43_txpower_lo_control *lo = dev->phy.lo_control; |
824 | struct b43_lo_calib *c; | |
825 | ||
826 | c = b43_find_lo_calib(lo, bbatt, rfatt); | |
827 | if (c) | |
828 | return c; | |
829 | /* Not in the list of calibrated LO settings. | |
830 | * Calibrate it now. */ | |
831 | c = b43_calibrate_lo_setting(dev, bbatt, rfatt); | |
832 | if (!c) | |
833 | return NULL; | |
834 | list_add(&c->list, &lo->calib_list); | |
835 | ||
836 | return c; | |
e4d6b795 MB |
837 | } |
838 | ||
f5eda47f | 839 | void b43_gphy_dc_lt_init(struct b43_wldev *dev, bool update_all) |
e4d6b795 MB |
840 | { |
841 | struct b43_phy *phy = &dev->phy; | |
f5eda47f MB |
842 | struct b43_txpower_lo_control *lo = phy->lo_control; |
843 | int i; | |
844 | int rf_offset, bb_offset; | |
845 | const struct b43_rfatt *rfatt; | |
846 | const struct b43_bbatt *bbatt; | |
847 | u64 power_vector; | |
848 | bool table_changed = 0; | |
e4d6b795 | 849 | |
f5eda47f MB |
850 | BUILD_BUG_ON(B43_DC_LT_SIZE != 32); |
851 | B43_WARN_ON(lo->rfatt_list.len * lo->bbatt_list.len > 64); | |
e4d6b795 | 852 | |
f5eda47f MB |
853 | power_vector = lo->power_vector; |
854 | if (!update_all && !power_vector) | |
855 | return; /* Nothing to do. */ | |
856 | ||
857 | /* Suspend the MAC now to avoid continuous suspend/enable | |
858 | * cycles in the loop. */ | |
859 | b43_mac_suspend(dev); | |
860 | ||
861 | for (i = 0; i < B43_DC_LT_SIZE * 2; i++) { | |
862 | struct b43_lo_calib *cal; | |
863 | int idx; | |
864 | u16 val; | |
865 | ||
866 | if (!update_all && !(power_vector & (((u64)1ULL) << i))) | |
867 | continue; | |
868 | /* Update the table entry for this power_vector bit. | |
869 | * The table rows are RFatt entries and columns are BBatt. */ | |
870 | bb_offset = i / lo->rfatt_list.len; | |
871 | rf_offset = i % lo->rfatt_list.len; | |
872 | bbatt = &(lo->bbatt_list.list[bb_offset]); | |
873 | rfatt = &(lo->rfatt_list.list[rf_offset]); | |
874 | ||
875 | cal = b43_calibrate_lo_setting(dev, bbatt, rfatt); | |
876 | if (!cal) { | |
877 | b43warn(dev->wl, "LO: Could not " | |
878 | "calibrate DC table entry\n"); | |
879 | continue; | |
880 | } | |
881 | /*FIXME: Is Q really in the low nibble? */ | |
882 | val = (u8)(cal->ctl.q); | |
883 | val |= ((u8)(cal->ctl.i)) << 4; | |
884 | kfree(cal); | |
885 | ||
886 | /* Get the index into the hardware DC LT. */ | |
887 | idx = i / 2; | |
888 | /* Change the table in memory. */ | |
889 | if (i % 2) { | |
890 | /* Change the high byte. */ | |
891 | lo->dc_lt[idx] = (lo->dc_lt[idx] & 0x00FF) | |
892 | | ((val & 0x00FF) << 8); | |
893 | } else { | |
894 | /* Change the low byte. */ | |
895 | lo->dc_lt[idx] = (lo->dc_lt[idx] & 0xFF00) | |
896 | | (val & 0x00FF); | |
897 | } | |
898 | table_changed = 1; | |
e4d6b795 | 899 | } |
f5eda47f MB |
900 | if (table_changed) { |
901 | /* The table changed in memory. Update the hardware table. */ | |
902 | for (i = 0; i < B43_DC_LT_SIZE; i++) | |
903 | b43_phy_write(dev, 0x3A0 + i, lo->dc_lt[i]); | |
904 | } | |
905 | b43_mac_enable(dev); | |
e4d6b795 | 906 | } |
e4d6b795 | 907 | |
f5eda47f MB |
908 | /* Fixup the RF attenuation value for the case where we are |
909 | * using the PAD mixer. */ | |
910 | static inline void b43_lo_fixup_rfatt(struct b43_rfatt *rf) | |
e4d6b795 | 911 | { |
f5eda47f MB |
912 | if (!rf->with_padmix) |
913 | return; | |
914 | if ((rf->att != 1) && (rf->att != 2) && (rf->att != 3)) | |
915 | rf->att = 4; | |
e4d6b795 MB |
916 | } |
917 | ||
918 | void b43_lo_g_adjust(struct b43_wldev *dev) | |
919 | { | |
920 | struct b43_phy *phy = &dev->phy; | |
f5eda47f | 921 | struct b43_lo_calib *cal; |
e4d6b795 | 922 | struct b43_rfatt rf; |
e4d6b795 MB |
923 | |
924 | memcpy(&rf, &phy->rfatt, sizeof(rf)); | |
f5eda47f | 925 | b43_lo_fixup_rfatt(&rf); |
e4d6b795 | 926 | |
f5eda47f MB |
927 | cal = b43_get_calib_lo_settings(dev, &phy->bbatt, &rf); |
928 | if (!cal) | |
929 | return; | |
930 | b43_lo_write(dev, &cal->ctl); | |
e4d6b795 MB |
931 | } |
932 | ||
933 | void b43_lo_g_adjust_to(struct b43_wldev *dev, | |
934 | u16 rfatt, u16 bbatt, u16 tx_control) | |
935 | { | |
936 | struct b43_rfatt rf; | |
937 | struct b43_bbatt bb; | |
f5eda47f | 938 | struct b43_lo_calib *cal; |
e4d6b795 MB |
939 | |
940 | memset(&rf, 0, sizeof(rf)); | |
941 | memset(&bb, 0, sizeof(bb)); | |
942 | rf.att = rfatt; | |
943 | bb.att = bbatt; | |
f5eda47f MB |
944 | b43_lo_fixup_rfatt(&rf); |
945 | cal = b43_get_calib_lo_settings(dev, &bb, &rf); | |
946 | if (!cal) | |
947 | return; | |
948 | b43_lo_write(dev, &cal->ctl); | |
e4d6b795 MB |
949 | } |
950 | ||
f5eda47f MB |
951 | /* Periodic LO maintanance work */ |
952 | void b43_lo_g_maintanance_work(struct b43_wldev *dev) | |
e4d6b795 | 953 | { |
f5eda47f MB |
954 | struct b43_phy *phy = &dev->phy; |
955 | struct b43_txpower_lo_control *lo = phy->lo_control; | |
956 | unsigned long now; | |
957 | unsigned long expire; | |
958 | struct b43_lo_calib *cal, *tmp; | |
959 | bool current_item_expired = 0; | |
960 | bool hwpctl; | |
961 | ||
962 | if (!lo) | |
963 | return; | |
964 | now = jiffies; | |
965 | hwpctl = b43_has_hardware_pctl(phy); | |
966 | ||
967 | if (hwpctl) { | |
968 | /* Read the power vector and update it, if needed. */ | |
969 | expire = now - B43_LO_PWRVEC_EXPIRE; | |
970 | if (time_before(lo->pwr_vec_read_time, expire)) { | |
971 | lo_read_power_vector(dev); | |
972 | b43_gphy_dc_lt_init(dev, 0); | |
973 | } | |
974 | //FIXME Recalc the whole DC table from time to time? | |
975 | } | |
976 | ||
977 | if (hwpctl) | |
978 | return; | |
979 | /* Search for expired LO settings. Remove them. | |
980 | * Recalibrate the current setting, if expired. */ | |
981 | expire = now - B43_LO_CALIB_EXPIRE; | |
982 | list_for_each_entry_safe(cal, tmp, &lo->calib_list, list) { | |
983 | if (!time_before(cal->calib_time, expire)) | |
984 | continue; | |
985 | /* This item expired. */ | |
986 | if (b43_compare_bbatt(&cal->bbatt, &phy->bbatt) && | |
987 | b43_compare_rfatt(&cal->rfatt, &phy->rfatt)) { | |
988 | B43_WARN_ON(current_item_expired); | |
989 | current_item_expired = 1; | |
990 | } | |
991 | if (b43_debug(dev, B43_DBG_LO)) { | |
992 | b43dbg(dev->wl, "LO: Item BB(%u), RF(%u,%u), " | |
993 | "I=%d, Q=%d expired\n", | |
994 | cal->bbatt.att, cal->rfatt.att, | |
995 | cal->rfatt.with_padmix, | |
996 | cal->ctl.i, cal->ctl.q); | |
997 | } | |
998 | list_del(&cal->list); | |
999 | kfree(cal); | |
1000 | } | |
1001 | if (current_item_expired || unlikely(list_empty(&lo->calib_list))) { | |
1002 | /* Recalibrate currently used LO setting. */ | |
1003 | if (b43_debug(dev, B43_DBG_LO)) | |
1004 | b43dbg(dev->wl, "LO: Recalibrating current LO setting\n"); | |
1005 | cal = b43_calibrate_lo_setting(dev, &phy->bbatt, &phy->rfatt); | |
1006 | if (cal) { | |
1007 | list_add(&cal->list, &lo->calib_list); | |
1008 | b43_lo_write(dev, &cal->ctl); | |
1009 | } else | |
1010 | b43warn(dev->wl, "Failed to recalibrate current LO setting\n"); | |
1011 | } | |
e4d6b795 MB |
1012 | } |
1013 | ||
f5eda47f | 1014 | void b43_lo_g_cleanup(struct b43_wldev *dev) |
e4d6b795 | 1015 | { |
f5eda47f MB |
1016 | struct b43_txpower_lo_control *lo = dev->phy.lo_control; |
1017 | struct b43_lo_calib *cal, *tmp; | |
e4d6b795 | 1018 | |
f5eda47f MB |
1019 | if (!lo) |
1020 | return; | |
1021 | list_for_each_entry_safe(cal, tmp, &lo->calib_list, list) { | |
1022 | list_del(&cal->list); | |
1023 | kfree(cal); | |
1024 | } | |
e4d6b795 MB |
1025 | } |
1026 | ||
f5eda47f MB |
1027 | /* LO Initialization */ |
1028 | void b43_lo_g_init(struct b43_wldev *dev) | |
e4d6b795 MB |
1029 | { |
1030 | struct b43_phy *phy = &dev->phy; | |
e4d6b795 | 1031 | |
f5eda47f MB |
1032 | if (b43_has_hardware_pctl(phy)) { |
1033 | lo_read_power_vector(dev); | |
1034 | b43_gphy_dc_lt_init(dev, 1); | |
1035 | } | |
e4d6b795 | 1036 | } |