ath5k: Read Spur channels from EEPROM
[linux-2.6] / drivers / net / wireless / zd1211rw / zd_rf_al7230b.c
1 /* ZD1211 USB-WLAN driver for Linux
2  *
3  * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
4  * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19  */
20
21 #include <linux/kernel.h>
22
23 #include "zd_rf.h"
24 #include "zd_usb.h"
25 #include "zd_chip.h"
26
27 static const u32 chan_rv[][2] = {
28         RF_CHANNEL( 1) = { 0x09ec00, 0x8cccc8 },
29         RF_CHANNEL( 2) = { 0x09ec00, 0x8cccd8 },
30         RF_CHANNEL( 3) = { 0x09ec00, 0x8cccc0 },
31         RF_CHANNEL( 4) = { 0x09ec00, 0x8cccd0 },
32         RF_CHANNEL( 5) = { 0x05ec00, 0x8cccc8 },
33         RF_CHANNEL( 6) = { 0x05ec00, 0x8cccd8 },
34         RF_CHANNEL( 7) = { 0x05ec00, 0x8cccc0 },
35         RF_CHANNEL( 8) = { 0x05ec00, 0x8cccd0 },
36         RF_CHANNEL( 9) = { 0x0dec00, 0x8cccc8 },
37         RF_CHANNEL(10) = { 0x0dec00, 0x8cccd8 },
38         RF_CHANNEL(11) = { 0x0dec00, 0x8cccc0 },
39         RF_CHANNEL(12) = { 0x0dec00, 0x8cccd0 },
40         RF_CHANNEL(13) = { 0x03ec00, 0x8cccc8 },
41         RF_CHANNEL(14) = { 0x03ec00, 0x866660 },
42 };
43
44 static const u32 std_rv[] = {
45         0x4ff821,
46         0xc5fbfc,
47         0x21ebfe,
48         0xafd401, /* freq shift 0xaad401 */
49         0x6cf56a,
50         0xe04073,
51         0x193d76,
52         0x9dd844,
53         0x500007,
54         0xd8c010,
55 };
56
57 static const u32 rv_init1[] = {
58         0x3c9000,
59         0xbfffff,
60         0x700000,
61         0xf15d58,
62 };
63
64 static const u32 rv_init2[] = {
65         0xf15d59,
66         0xf15d5c,
67         0xf15d58,
68 };
69
70 static const struct zd_ioreq16 ioreqs_sw[] = {
71         { CR128, 0x14 }, { CR129, 0x12 }, { CR130, 0x10 },
72         { CR38,  0x38 }, { CR136, 0xdf },
73 };
74
75 static int zd1211b_al7230b_finalize(struct zd_chip *chip)
76 {
77         int r;
78         static const struct zd_ioreq16 ioreqs[] = {
79                 { CR80,  0x30 }, { CR81,  0x30 }, { CR79,  0x58 },
80                 { CR12,  0xf0 }, { CR77,  0x1b }, { CR78,  0x58 },
81                 { CR203, 0x04 },
82                 { },
83                 { CR240, 0x80 },
84         };
85
86         r = zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
87         if (r)
88                 return r;
89
90         if (chip->new_phy_layout) {
91                 /* antenna selection? */
92                 r = zd_iowrite16_locked(chip, 0xe5, CR9);
93                 if (r)
94                         return r;
95         }
96
97         return zd_iowrite16_locked(chip, 0x04, CR203);
98 }
99
100 static int zd1211_al7230b_init_hw(struct zd_rf *rf)
101 {
102         int r;
103         struct zd_chip *chip = zd_rf_to_chip(rf);
104
105         /* All of these writes are identical to AL2230 unless otherwise
106          * specified */
107         static const struct zd_ioreq16 ioreqs_1[] = {
108                 /* This one is 7230-specific, and happens before the rest */
109                 { CR240,  0x57 },
110                 { },
111
112                 { CR15,   0x20 }, { CR23,   0x40 }, { CR24,  0x20 },
113                 { CR26,   0x11 }, { CR28,   0x3e }, { CR29,  0x00 },
114                 { CR44,   0x33 },
115                 /* This value is different for 7230 (was: 0x2a) */
116                 { CR106,  0x22 },
117                 { CR107,  0x1a }, { CR109,  0x09 }, { CR110,  0x27 },
118                 { CR111,  0x2b }, { CR112,  0x2b }, { CR119,  0x0a },
119                 /* This happened further down in AL2230,
120                  * and the value changed (was: 0xe0) */
121                 { CR122,  0xfc },
122                 { CR10,   0x89 },
123                 /* for newest (3rd cut) AL2300 */
124                 { CR17,   0x28 },
125                 { CR26,   0x93 }, { CR34,   0x30 },
126                 /* for newest (3rd cut) AL2300 */
127                 { CR35,   0x3e },
128                 { CR41,   0x24 }, { CR44,   0x32 },
129                 /* for newest (3rd cut) AL2300 */
130                 { CR46,   0x96 },
131                 { CR47,   0x1e }, { CR79,   0x58 }, { CR80,  0x30 },
132                 { CR81,   0x30 }, { CR87,   0x0a }, { CR89,  0x04 },
133                 { CR92,   0x0a }, { CR99,   0x28 },
134                 /* This value is different for 7230 (was: 0x00) */
135                 { CR100,  0x02 },
136                 { CR101,  0x13 }, { CR102,  0x27 },
137                 /* This value is different for 7230 (was: 0x24) */
138                 { CR106,  0x22 },
139                 /* This value is different for 7230 (was: 0x2a) */
140                 { CR107,  0x3f },
141                 { CR109,  0x09 },
142                 /* This value is different for 7230 (was: 0x13) */
143                 { CR110,  0x1f },
144                 { CR111,  0x1f }, { CR112,  0x1f }, { CR113, 0x27 },
145                 { CR114,  0x27 },
146                 /* for newest (3rd cut) AL2300 */
147                 { CR115,  0x24 },
148                 /* This value is different for 7230 (was: 0x24) */
149                 { CR116,  0x3f },
150                 /* This value is different for 7230 (was: 0xf4) */
151                 { CR117,  0xfa },
152                 { CR118,  0xfc }, { CR119,  0x10 }, { CR120, 0x4f },
153                 { CR121,  0x77 }, { CR137,  0x88 },
154                 /* This one is 7230-specific */
155                 { CR138,  0xa8 },
156                 /* This value is different for 7230 (was: 0xff) */
157                 { CR252,  0x34 },
158                 /* This value is different for 7230 (was: 0xff) */
159                 { CR253,  0x34 },
160
161                 /* PLL_OFF */
162                 { CR251, 0x2f },
163         };
164
165         static const struct zd_ioreq16 ioreqs_2[] = {
166                 { CR251, 0x3f }, /* PLL_ON */
167                 { CR128, 0x14 }, { CR129, 0x12 }, { CR130, 0x10 },
168                 { CR38,  0x38 }, { CR136, 0xdf },
169         };
170
171         r = zd_iowrite16a_locked(chip, ioreqs_1, ARRAY_SIZE(ioreqs_1));
172         if (r)
173                 return r;
174
175         r = zd_rfwritev_cr_locked(chip, chan_rv[0], ARRAY_SIZE(chan_rv[0]));
176         if (r)
177                 return r;
178
179         r = zd_rfwritev_cr_locked(chip, std_rv, ARRAY_SIZE(std_rv));
180         if (r)
181                 return r;
182
183         r = zd_rfwritev_cr_locked(chip, rv_init1, ARRAY_SIZE(rv_init1));
184         if (r)
185                 return r;
186
187         r = zd_iowrite16a_locked(chip, ioreqs_2, ARRAY_SIZE(ioreqs_2));
188         if (r)
189                 return r;
190
191         r = zd_rfwritev_cr_locked(chip, rv_init2, ARRAY_SIZE(rv_init2));
192         if (r)
193                 return r;
194
195         r = zd_iowrite16_locked(chip, 0x06, CR203);
196         if (r)
197                 return r;
198         r = zd_iowrite16_locked(chip, 0x80, CR240);
199         if (r)
200                 return r;
201
202         return 0;
203 }
204
205 static int zd1211b_al7230b_init_hw(struct zd_rf *rf)
206 {
207         int r;
208         struct zd_chip *chip = zd_rf_to_chip(rf);
209
210         static const struct zd_ioreq16 ioreqs_1[] = {
211                 { CR240, 0x57 }, { CR9,   0x9 },
212                 { },
213                 { CR10,  0x8b }, { CR15,  0x20 },
214                 { CR17,  0x2B }, /* for newest (3rd cut) AL2230 */
215                 { CR20,  0x10 }, /* 4N25->Stone Request */
216                 { CR23,  0x40 }, { CR24,  0x20 }, { CR26,  0x93 },
217                 { CR28,  0x3e }, { CR29,  0x00 },
218                 { CR33,  0x28 }, /* 5613 */
219                 { CR34,  0x30 },
220                 { CR35,  0x3e }, /* for newest (3rd cut) AL2230 */
221                 { CR41,  0x24 }, { CR44,  0x32 },
222                 { CR46,  0x99 }, /* for newest (3rd cut) AL2230 */
223                 { CR47,  0x1e },
224
225                 /* ZD1215 5610 */
226                 { CR48,  0x00 }, { CR49,  0x00 }, { CR51,  0x01 },
227                 { CR52,  0x80 }, { CR53,  0x7e }, { CR65,  0x00 },
228                 { CR66,  0x00 }, { CR67,  0x00 }, { CR68,  0x00 },
229                 { CR69,  0x28 },
230
231                 { CR79,  0x58 }, { CR80,  0x30 }, { CR81,  0x30 },
232                 { CR87,  0x0A }, { CR89,  0x04 },
233                 { CR90,  0x58 }, /* 5112 */
234                 { CR91,  0x00 }, /* 5613 */
235                 { CR92,  0x0a },
236                 { CR98,  0x8d }, /* 4804, for 1212 new algorithm */
237                 { CR99,  0x00 }, { CR100, 0x02 }, { CR101, 0x13 },
238                 { CR102, 0x27 },
239                 { CR106, 0x20 }, /* change to 0x24 for AL7230B */
240                 { CR109, 0x13 }, /* 4804, for 1212 new algorithm */
241                 { CR112, 0x1f },
242         };
243
244         static const struct zd_ioreq16 ioreqs_new_phy[] = {
245                 { CR107, 0x28 },
246                 { CR110, 0x1f }, /* 5127, 0x13->0x1f */
247                 { CR111, 0x1f }, /* 0x13 to 0x1f for AL7230B */
248                 { CR116, 0x2a }, { CR118, 0xfa }, { CR119, 0x12 },
249                 { CR121, 0x6c }, /* 5613 */
250         };
251
252         static const struct zd_ioreq16 ioreqs_old_phy[] = {
253                 { CR107, 0x24 },
254                 { CR110, 0x13 }, /* 5127, 0x13->0x1f */
255                 { CR111, 0x13 }, /* 0x13 to 0x1f for AL7230B */
256                 { CR116, 0x24 }, { CR118, 0xfc }, { CR119, 0x11 },
257                 { CR121, 0x6a }, /* 5613 */
258         };
259
260         static const struct zd_ioreq16 ioreqs_2[] = {
261                 { CR113, 0x27 }, { CR114, 0x27 }, { CR115, 0x24 },
262                 { CR117, 0xfa }, { CR120, 0x4f },
263                 { CR122, 0xfc }, /* E0->FCh at 4901 */
264                 { CR123, 0x57 }, /* 5613 */
265                 { CR125, 0xad }, /* 4804, for 1212 new algorithm */
266                 { CR126, 0x6c }, /* 5613 */
267                 { CR127, 0x03 }, /* 4804, for 1212 new algorithm */
268                 { CR130, 0x10 },
269                 { CR131, 0x00 }, /* 5112 */
270                 { CR137, 0x50 }, /* 5613 */
271                 { CR138, 0xa8 }, /* 5112 */
272                 { CR144, 0xac }, /* 5613 */
273                 { CR148, 0x40 }, /* 5112 */
274                 { CR149, 0x40 }, /* 4O07, 50->40 */
275                 { CR150, 0x1a }, /* 5112, 0C->1A */
276                 { CR252, 0x34 }, { CR253, 0x34 },
277                 { CR251, 0x2f }, /* PLL_OFF */
278         };
279
280         static const struct zd_ioreq16 ioreqs_3[] = {
281                 { CR251, 0x7f }, /* PLL_ON */
282                 { CR128, 0x14 }, { CR129, 0x12 }, { CR130, 0x10 },
283                 { CR38,  0x38 }, { CR136, 0xdf },
284         };
285
286         r = zd_iowrite16a_locked(chip, ioreqs_1, ARRAY_SIZE(ioreqs_1));
287         if (r)
288                 return r;
289
290         if (chip->new_phy_layout)
291                 r = zd_iowrite16a_locked(chip, ioreqs_new_phy,
292                         ARRAY_SIZE(ioreqs_new_phy));
293         else
294                 r = zd_iowrite16a_locked(chip, ioreqs_old_phy,
295                         ARRAY_SIZE(ioreqs_old_phy));
296         if (r)
297                 return r;
298
299         r = zd_iowrite16a_locked(chip, ioreqs_2, ARRAY_SIZE(ioreqs_2));
300         if (r)
301                 return r;
302
303         r = zd_rfwritev_cr_locked(chip, chan_rv[0], ARRAY_SIZE(chan_rv[0]));
304         if (r)
305                 return r;
306
307         r = zd_rfwritev_cr_locked(chip, std_rv, ARRAY_SIZE(std_rv));
308         if (r)
309                 return r;
310
311         r = zd_rfwritev_cr_locked(chip, rv_init1, ARRAY_SIZE(rv_init1));
312         if (r)
313                 return r;
314
315         r = zd_iowrite16a_locked(chip, ioreqs_3, ARRAY_SIZE(ioreqs_3));
316         if (r)
317                 return r;
318
319         r = zd_rfwritev_cr_locked(chip, rv_init2, ARRAY_SIZE(rv_init2));
320         if (r)
321                 return r;
322
323         return zd1211b_al7230b_finalize(chip);
324 }
325
326 static int zd1211_al7230b_set_channel(struct zd_rf *rf, u8 channel)
327 {
328         int r;
329         const u32 *rv = chan_rv[channel-1];
330         struct zd_chip *chip = zd_rf_to_chip(rf);
331
332         static const struct zd_ioreq16 ioreqs[] = {
333                 /* PLL_ON */
334                 { CR251, 0x3f },
335                 { CR203, 0x06 }, { CR240, 0x08 },
336         };
337
338         r = zd_iowrite16_locked(chip, 0x57, CR240);
339         if (r)
340                 return r;
341
342         /* PLL_OFF */
343         r = zd_iowrite16_locked(chip, 0x2f, CR251);
344         if (r)
345                 return r;
346
347         r = zd_rfwritev_cr_locked(chip, std_rv, ARRAY_SIZE(std_rv));
348         if (r)
349                 return r;
350
351         r = zd_rfwrite_cr_locked(chip, 0x3c9000);
352         if (r)
353                 return r;
354         r = zd_rfwrite_cr_locked(chip, 0xf15d58);
355         if (r)
356                 return r;
357
358         r = zd_iowrite16a_locked(chip, ioreqs_sw, ARRAY_SIZE(ioreqs_sw));
359         if (r)
360                 return r;
361
362         r = zd_rfwritev_cr_locked(chip, rv, 2);
363         if (r)
364                 return r;
365
366         r = zd_rfwrite_cr_locked(chip, 0x3c9000);
367         if (r)
368                 return r;
369
370         return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
371 }
372
373 static int zd1211b_al7230b_set_channel(struct zd_rf *rf, u8 channel)
374 {
375         int r;
376         const u32 *rv = chan_rv[channel-1];
377         struct zd_chip *chip = zd_rf_to_chip(rf);
378
379         r = zd_iowrite16_locked(chip, 0x57, CR240);
380         if (r)
381                 return r;
382         r = zd_iowrite16_locked(chip, 0xe4, CR9);
383         if (r)
384                 return r;
385
386         /* PLL_OFF */
387         r = zd_iowrite16_locked(chip, 0x2f, CR251);
388         if (r)
389                 return r;
390         r = zd_rfwritev_cr_locked(chip, std_rv, ARRAY_SIZE(std_rv));
391         if (r)
392                 return r;
393
394         r = zd_rfwrite_cr_locked(chip, 0x3c9000);
395         if (r)
396                 return r;
397         r = zd_rfwrite_cr_locked(chip, 0xf15d58);
398         if (r)
399                 return r;
400
401         r = zd_iowrite16a_locked(chip, ioreqs_sw, ARRAY_SIZE(ioreqs_sw));
402         if (r)
403                 return r;
404
405         r = zd_rfwritev_cr_locked(chip, rv, 2);
406         if (r)
407                 return r;
408
409         r = zd_rfwrite_cr_locked(chip, 0x3c9000);
410         if (r)
411                 return r;
412
413         r = zd_iowrite16_locked(chip, 0x7f, CR251);
414         if (r)
415                 return r;
416
417         return zd1211b_al7230b_finalize(chip);
418 }
419
420 static int zd1211_al7230b_switch_radio_on(struct zd_rf *rf)
421 {
422         struct zd_chip *chip = zd_rf_to_chip(rf);
423         static const struct zd_ioreq16 ioreqs[] = {
424                 { CR11,  0x00 },
425                 { CR251, 0x3f },
426         };
427
428         return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
429 }
430
431 static int zd1211b_al7230b_switch_radio_on(struct zd_rf *rf)
432 {
433         struct zd_chip *chip = zd_rf_to_chip(rf);
434         static const struct zd_ioreq16 ioreqs[] = {
435                 { CR11,  0x00 },
436                 { CR251, 0x7f },
437         };
438
439         return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
440 }
441
442 static int al7230b_switch_radio_off(struct zd_rf *rf)
443 {
444         struct zd_chip *chip = zd_rf_to_chip(rf);
445         static const struct zd_ioreq16 ioreqs[] = {
446                 { CR11,  0x04 },
447                 { CR251, 0x2f },
448         };
449
450         return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
451 }
452
453 /* ZD1211B+AL7230B 6m band edge patching differs slightly from other
454  * configurations */
455 static int zd1211b_al7230b_patch_6m(struct zd_rf *rf, u8 channel)
456 {
457         struct zd_chip *chip = zd_rf_to_chip(rf);
458         struct zd_ioreq16 ioreqs[] = {
459                 { CR128, 0x14 }, { CR129, 0x12 },
460         };
461
462         /* FIXME: Channel 11 is not the edge for all regulatory domains. */
463         if (channel == 1) {
464                 ioreqs[0].value = 0x0e;
465                 ioreqs[1].value = 0x10;
466         } else if (channel == 11) {
467                 ioreqs[0].value = 0x10;
468                 ioreqs[1].value = 0x10;
469         }
470
471         dev_dbg_f(zd_chip_dev(chip), "patching for channel %d\n", channel);
472         return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
473 }
474
475 int zd_rf_init_al7230b(struct zd_rf *rf)
476 {
477         struct zd_chip *chip = zd_rf_to_chip(rf);
478
479         if (zd_chip_is_zd1211b(chip)) {
480                 rf->init_hw = zd1211b_al7230b_init_hw;
481                 rf->switch_radio_on = zd1211b_al7230b_switch_radio_on;
482                 rf->set_channel = zd1211b_al7230b_set_channel;
483                 rf->patch_6m_band_edge = zd1211b_al7230b_patch_6m;
484         } else {
485                 rf->init_hw = zd1211_al7230b_init_hw;
486                 rf->switch_radio_on = zd1211_al7230b_switch_radio_on;
487                 rf->set_channel = zd1211_al7230b_set_channel;
488                 rf->patch_6m_band_edge = zd_rf_generic_patch_6m;
489                 rf->patch_cck_gain = 1;
490         }
491
492         rf->switch_radio_off = al7230b_switch_radio_off;
493
494         return 0;
495 }