1// SPDX-License-Identifier: GPL-2.0-or-later
2/* ZD1211 USB-WLAN driver for Linux
3 *
4 * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
5 * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
6 */
7
8#include <linux/kernel.h>
9
10#include "zd_rf.h"
11#include "zd_usb.h"
12#include "zd_chip.h"
13
14static const u32 chan_rv[][2] = {
15 RF_CHANNEL( 1) = { 0x09ec00, 0x8cccc8 },
16 RF_CHANNEL( 2) = { 0x09ec00, 0x8cccd8 },
17 RF_CHANNEL( 3) = { 0x09ec00, 0x8cccc0 },
18 RF_CHANNEL( 4) = { 0x09ec00, 0x8cccd0 },
19 RF_CHANNEL( 5) = { 0x05ec00, 0x8cccc8 },
20 RF_CHANNEL( 6) = { 0x05ec00, 0x8cccd8 },
21 RF_CHANNEL( 7) = { 0x05ec00, 0x8cccc0 },
22 RF_CHANNEL( 8) = { 0x05ec00, 0x8cccd0 },
23 RF_CHANNEL( 9) = { 0x0dec00, 0x8cccc8 },
24 RF_CHANNEL(10) = { 0x0dec00, 0x8cccd8 },
25 RF_CHANNEL(11) = { 0x0dec00, 0x8cccc0 },
26 RF_CHANNEL(12) = { 0x0dec00, 0x8cccd0 },
27 RF_CHANNEL(13) = { 0x03ec00, 0x8cccc8 },
28 RF_CHANNEL(14) = { 0x03ec00, 0x866660 },
29};
30
31static const u32 std_rv[] = {
32 0x4ff821,
33 0xc5fbfc,
34 0x21ebfe,
35 0xafd401, /* freq shift 0xaad401 */
36 0x6cf56a,
37 0xe04073,
38 0x193d76,
39 0x9dd844,
40 0x500007,
41 0xd8c010,
42};
43
44static const u32 rv_init1[] = {
45 0x3c9000,
46 0xbfffff,
47 0x700000,
48 0xf15d58,
49};
50
51static const u32 rv_init2[] = {
52 0xf15d59,
53 0xf15d5c,
54 0xf15d58,
55};
56
57static const struct zd_ioreq16 ioreqs_sw[] = {
58 { ZD_CR128, 0x14 }, { ZD_CR129, 0x12 }, { ZD_CR130, 0x10 },
59 { ZD_CR38, 0x38 }, { ZD_CR136, 0xdf },
60};
61
62static int zd1211b_al7230b_finalize(struct zd_chip *chip)
63{
64 int r;
65 static const struct zd_ioreq16 ioreqs[] = {
66 { ZD_CR80, 0x30 }, { ZD_CR81, 0x30 }, { ZD_CR79, 0x58 },
67 { ZD_CR12, 0xf0 }, { ZD_CR77, 0x1b }, { ZD_CR78, 0x58 },
68 { ZD_CR203, 0x04 },
69 { },
70 { ZD_CR240, 0x80 },
71 };
72
73 r = zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
74 if (r)
75 return r;
76
77 if (chip->new_phy_layout) {
78 /* antenna selection? */
79 r = zd_iowrite16_locked(chip, value: 0xe5, ZD_CR9);
80 if (r)
81 return r;
82 }
83
84 return zd_iowrite16_locked(chip, value: 0x04, ZD_CR203);
85}
86
87static int zd1211_al7230b_init_hw(struct zd_rf *rf)
88{
89 int r;
90 struct zd_chip *chip = zd_rf_to_chip(rf);
91
92 /* All of these writes are identical to AL2230 unless otherwise
93 * specified */
94 static const struct zd_ioreq16 ioreqs_1[] = {
95 /* This one is 7230-specific, and happens before the rest */
96 { ZD_CR240, 0x57 },
97 { },
98
99 { ZD_CR15, 0x20 }, { ZD_CR23, 0x40 }, { ZD_CR24, 0x20 },
100 { ZD_CR26, 0x11 }, { ZD_CR28, 0x3e }, { ZD_CR29, 0x00 },
101 { ZD_CR44, 0x33 },
102 /* This value is different for 7230 (was: 0x2a) */
103 { ZD_CR106, 0x22 },
104 { ZD_CR107, 0x1a }, { ZD_CR109, 0x09 }, { ZD_CR110, 0x27 },
105 { ZD_CR111, 0x2b }, { ZD_CR112, 0x2b }, { ZD_CR119, 0x0a },
106 /* This happened further down in AL2230,
107 * and the value changed (was: 0xe0) */
108 { ZD_CR122, 0xfc },
109 { ZD_CR10, 0x89 },
110 /* for newest (3rd cut) AL2300 */
111 { ZD_CR17, 0x28 },
112 { ZD_CR26, 0x93 }, { ZD_CR34, 0x30 },
113 /* for newest (3rd cut) AL2300 */
114 { ZD_CR35, 0x3e },
115 { ZD_CR41, 0x24 }, { ZD_CR44, 0x32 },
116 /* for newest (3rd cut) AL2300 */
117 { ZD_CR46, 0x96 },
118 { ZD_CR47, 0x1e }, { ZD_CR79, 0x58 }, { ZD_CR80, 0x30 },
119 { ZD_CR81, 0x30 }, { ZD_CR87, 0x0a }, { ZD_CR89, 0x04 },
120 { ZD_CR92, 0x0a }, { ZD_CR99, 0x28 },
121 /* This value is different for 7230 (was: 0x00) */
122 { ZD_CR100, 0x02 },
123 { ZD_CR101, 0x13 }, { ZD_CR102, 0x27 },
124 /* This value is different for 7230 (was: 0x24) */
125 { ZD_CR106, 0x22 },
126 /* This value is different for 7230 (was: 0x2a) */
127 { ZD_CR107, 0x3f },
128 { ZD_CR109, 0x09 },
129 /* This value is different for 7230 (was: 0x13) */
130 { ZD_CR110, 0x1f },
131 { ZD_CR111, 0x1f }, { ZD_CR112, 0x1f }, { ZD_CR113, 0x27 },
132 { ZD_CR114, 0x27 },
133 /* for newest (3rd cut) AL2300 */
134 { ZD_CR115, 0x24 },
135 /* This value is different for 7230 (was: 0x24) */
136 { ZD_CR116, 0x3f },
137 /* This value is different for 7230 (was: 0xf4) */
138 { ZD_CR117, 0xfa },
139 { ZD_CR118, 0xfc }, { ZD_CR119, 0x10 }, { ZD_CR120, 0x4f },
140 { ZD_CR121, 0x77 }, { ZD_CR137, 0x88 },
141 /* This one is 7230-specific */
142 { ZD_CR138, 0xa8 },
143 /* This value is different for 7230 (was: 0xff) */
144 { ZD_CR252, 0x34 },
145 /* This value is different for 7230 (was: 0xff) */
146 { ZD_CR253, 0x34 },
147
148 /* PLL_OFF */
149 { ZD_CR251, 0x2f },
150 };
151
152 static const struct zd_ioreq16 ioreqs_2[] = {
153 { ZD_CR251, 0x3f }, /* PLL_ON */
154 { ZD_CR128, 0x14 }, { ZD_CR129, 0x12 }, { ZD_CR130, 0x10 },
155 { ZD_CR38, 0x38 }, { ZD_CR136, 0xdf },
156 };
157
158 r = zd_iowrite16a_locked(chip, ioreqs: ioreqs_1, ARRAY_SIZE(ioreqs_1));
159 if (r)
160 return r;
161
162 r = zd_rfwritev_cr_locked(chip, values: chan_rv[0], ARRAY_SIZE(chan_rv[0]));
163 if (r)
164 return r;
165
166 r = zd_rfwritev_cr_locked(chip, values: std_rv, ARRAY_SIZE(std_rv));
167 if (r)
168 return r;
169
170 r = zd_rfwritev_cr_locked(chip, values: rv_init1, ARRAY_SIZE(rv_init1));
171 if (r)
172 return r;
173
174 r = zd_iowrite16a_locked(chip, ioreqs: ioreqs_2, ARRAY_SIZE(ioreqs_2));
175 if (r)
176 return r;
177
178 r = zd_rfwritev_cr_locked(chip, values: rv_init2, ARRAY_SIZE(rv_init2));
179 if (r)
180 return r;
181
182 r = zd_iowrite16_locked(chip, value: 0x06, ZD_CR203);
183 if (r)
184 return r;
185 r = zd_iowrite16_locked(chip, value: 0x80, ZD_CR240);
186 if (r)
187 return r;
188
189 return 0;
190}
191
192static int zd1211b_al7230b_init_hw(struct zd_rf *rf)
193{
194 int r;
195 struct zd_chip *chip = zd_rf_to_chip(rf);
196
197 static const struct zd_ioreq16 ioreqs_1[] = {
198 { ZD_CR240, 0x57 }, { ZD_CR9, 0x9 },
199 { },
200 { ZD_CR10, 0x8b }, { ZD_CR15, 0x20 },
201 { ZD_CR17, 0x2B }, /* for newest (3rd cut) AL2230 */
202 { ZD_CR20, 0x10 }, /* 4N25->Stone Request */
203 { ZD_CR23, 0x40 }, { ZD_CR24, 0x20 }, { ZD_CR26, 0x93 },
204 { ZD_CR28, 0x3e }, { ZD_CR29, 0x00 },
205 { ZD_CR33, 0x28 }, /* 5613 */
206 { ZD_CR34, 0x30 },
207 { ZD_CR35, 0x3e }, /* for newest (3rd cut) AL2230 */
208 { ZD_CR41, 0x24 }, { ZD_CR44, 0x32 },
209 { ZD_CR46, 0x99 }, /* for newest (3rd cut) AL2230 */
210 { ZD_CR47, 0x1e },
211
212 /* ZD1215 5610 */
213 { ZD_CR48, 0x00 }, { ZD_CR49, 0x00 }, { ZD_CR51, 0x01 },
214 { ZD_CR52, 0x80 }, { ZD_CR53, 0x7e }, { ZD_CR65, 0x00 },
215 { ZD_CR66, 0x00 }, { ZD_CR67, 0x00 }, { ZD_CR68, 0x00 },
216 { ZD_CR69, 0x28 },
217
218 { ZD_CR79, 0x58 }, { ZD_CR80, 0x30 }, { ZD_CR81, 0x30 },
219 { ZD_CR87, 0x0A }, { ZD_CR89, 0x04 },
220 { ZD_CR90, 0x58 }, /* 5112 */
221 { ZD_CR91, 0x00 }, /* 5613 */
222 { ZD_CR92, 0x0a },
223 { ZD_CR98, 0x8d }, /* 4804, for 1212 new algorithm */
224 { ZD_CR99, 0x00 }, { ZD_CR100, 0x02 }, { ZD_CR101, 0x13 },
225 { ZD_CR102, 0x27 },
226 { ZD_CR106, 0x20 }, /* change to 0x24 for AL7230B */
227 { ZD_CR109, 0x13 }, /* 4804, for 1212 new algorithm */
228 { ZD_CR112, 0x1f },
229 };
230
231 static const struct zd_ioreq16 ioreqs_new_phy[] = {
232 { ZD_CR107, 0x28 },
233 { ZD_CR110, 0x1f }, /* 5127, 0x13->0x1f */
234 { ZD_CR111, 0x1f }, /* 0x13 to 0x1f for AL7230B */
235 { ZD_CR116, 0x2a }, { ZD_CR118, 0xfa }, { ZD_CR119, 0x12 },
236 { ZD_CR121, 0x6c }, /* 5613 */
237 };
238
239 static const struct zd_ioreq16 ioreqs_old_phy[] = {
240 { ZD_CR107, 0x24 },
241 { ZD_CR110, 0x13 }, /* 5127, 0x13->0x1f */
242 { ZD_CR111, 0x13 }, /* 0x13 to 0x1f for AL7230B */
243 { ZD_CR116, 0x24 }, { ZD_CR118, 0xfc }, { ZD_CR119, 0x11 },
244 { ZD_CR121, 0x6a }, /* 5613 */
245 };
246
247 static const struct zd_ioreq16 ioreqs_2[] = {
248 { ZD_CR113, 0x27 }, { ZD_CR114, 0x27 }, { ZD_CR115, 0x24 },
249 { ZD_CR117, 0xfa }, { ZD_CR120, 0x4f },
250 { ZD_CR122, 0xfc }, /* E0->FCh at 4901 */
251 { ZD_CR123, 0x57 }, /* 5613 */
252 { ZD_CR125, 0xad }, /* 4804, for 1212 new algorithm */
253 { ZD_CR126, 0x6c }, /* 5613 */
254 { ZD_CR127, 0x03 }, /* 4804, for 1212 new algorithm */
255 { ZD_CR130, 0x10 },
256 { ZD_CR131, 0x00 }, /* 5112 */
257 { ZD_CR137, 0x50 }, /* 5613 */
258 { ZD_CR138, 0xa8 }, /* 5112 */
259 { ZD_CR144, 0xac }, /* 5613 */
260 { ZD_CR148, 0x40 }, /* 5112 */
261 { ZD_CR149, 0x40 }, /* 4O07, 50->40 */
262 { ZD_CR150, 0x1a }, /* 5112, 0C->1A */
263 { ZD_CR252, 0x34 }, { ZD_CR253, 0x34 },
264 { ZD_CR251, 0x2f }, /* PLL_OFF */
265 };
266
267 static const struct zd_ioreq16 ioreqs_3[] = {
268 { ZD_CR251, 0x7f }, /* PLL_ON */
269 { ZD_CR128, 0x14 }, { ZD_CR129, 0x12 }, { ZD_CR130, 0x10 },
270 { ZD_CR38, 0x38 }, { ZD_CR136, 0xdf },
271 };
272
273 r = zd_iowrite16a_locked(chip, ioreqs: ioreqs_1, ARRAY_SIZE(ioreqs_1));
274 if (r)
275 return r;
276
277 if (chip->new_phy_layout)
278 r = zd_iowrite16a_locked(chip, ioreqs: ioreqs_new_phy,
279 ARRAY_SIZE(ioreqs_new_phy));
280 else
281 r = zd_iowrite16a_locked(chip, ioreqs: ioreqs_old_phy,
282 ARRAY_SIZE(ioreqs_old_phy));
283 if (r)
284 return r;
285
286 r = zd_iowrite16a_locked(chip, ioreqs: ioreqs_2, ARRAY_SIZE(ioreqs_2));
287 if (r)
288 return r;
289
290 r = zd_rfwritev_cr_locked(chip, values: chan_rv[0], ARRAY_SIZE(chan_rv[0]));
291 if (r)
292 return r;
293
294 r = zd_rfwritev_cr_locked(chip, values: std_rv, ARRAY_SIZE(std_rv));
295 if (r)
296 return r;
297
298 r = zd_rfwritev_cr_locked(chip, values: rv_init1, ARRAY_SIZE(rv_init1));
299 if (r)
300 return r;
301
302 r = zd_iowrite16a_locked(chip, ioreqs: ioreqs_3, ARRAY_SIZE(ioreqs_3));
303 if (r)
304 return r;
305
306 r = zd_rfwritev_cr_locked(chip, values: rv_init2, ARRAY_SIZE(rv_init2));
307 if (r)
308 return r;
309
310 return zd1211b_al7230b_finalize(chip);
311}
312
313static int zd1211_al7230b_set_channel(struct zd_rf *rf, u8 channel)
314{
315 int r;
316 const u32 *rv = chan_rv[channel-1];
317 struct zd_chip *chip = zd_rf_to_chip(rf);
318
319 static const struct zd_ioreq16 ioreqs[] = {
320 /* PLL_ON */
321 { ZD_CR251, 0x3f },
322 { ZD_CR203, 0x06 }, { ZD_CR240, 0x08 },
323 };
324
325 r = zd_iowrite16_locked(chip, value: 0x57, ZD_CR240);
326 if (r)
327 return r;
328
329 /* PLL_OFF */
330 r = zd_iowrite16_locked(chip, value: 0x2f, ZD_CR251);
331 if (r)
332 return r;
333
334 r = zd_rfwritev_cr_locked(chip, values: std_rv, ARRAY_SIZE(std_rv));
335 if (r)
336 return r;
337
338 r = zd_rfwrite_cr_locked(chip, value: 0x3c9000);
339 if (r)
340 return r;
341 r = zd_rfwrite_cr_locked(chip, value: 0xf15d58);
342 if (r)
343 return r;
344
345 r = zd_iowrite16a_locked(chip, ioreqs: ioreqs_sw, ARRAY_SIZE(ioreqs_sw));
346 if (r)
347 return r;
348
349 r = zd_rfwritev_cr_locked(chip, values: rv, count: 2);
350 if (r)
351 return r;
352
353 r = zd_rfwrite_cr_locked(chip, value: 0x3c9000);
354 if (r)
355 return r;
356
357 return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
358}
359
360static int zd1211b_al7230b_set_channel(struct zd_rf *rf, u8 channel)
361{
362 int r;
363 const u32 *rv = chan_rv[channel-1];
364 struct zd_chip *chip = zd_rf_to_chip(rf);
365
366 r = zd_iowrite16_locked(chip, value: 0x57, ZD_CR240);
367 if (r)
368 return r;
369 r = zd_iowrite16_locked(chip, value: 0xe4, ZD_CR9);
370 if (r)
371 return r;
372
373 /* PLL_OFF */
374 r = zd_iowrite16_locked(chip, value: 0x2f, ZD_CR251);
375 if (r)
376 return r;
377 r = zd_rfwritev_cr_locked(chip, values: std_rv, ARRAY_SIZE(std_rv));
378 if (r)
379 return r;
380
381 r = zd_rfwrite_cr_locked(chip, value: 0x3c9000);
382 if (r)
383 return r;
384 r = zd_rfwrite_cr_locked(chip, value: 0xf15d58);
385 if (r)
386 return r;
387
388 r = zd_iowrite16a_locked(chip, ioreqs: ioreqs_sw, ARRAY_SIZE(ioreqs_sw));
389 if (r)
390 return r;
391
392 r = zd_rfwritev_cr_locked(chip, values: rv, count: 2);
393 if (r)
394 return r;
395
396 r = zd_rfwrite_cr_locked(chip, value: 0x3c9000);
397 if (r)
398 return r;
399
400 r = zd_iowrite16_locked(chip, value: 0x7f, ZD_CR251);
401 if (r)
402 return r;
403
404 return zd1211b_al7230b_finalize(chip);
405}
406
407static int zd1211_al7230b_switch_radio_on(struct zd_rf *rf)
408{
409 struct zd_chip *chip = zd_rf_to_chip(rf);
410 static const struct zd_ioreq16 ioreqs[] = {
411 { ZD_CR11, 0x00 },
412 { ZD_CR251, 0x3f },
413 };
414
415 return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
416}
417
418static int zd1211b_al7230b_switch_radio_on(struct zd_rf *rf)
419{
420 struct zd_chip *chip = zd_rf_to_chip(rf);
421 static const struct zd_ioreq16 ioreqs[] = {
422 { ZD_CR11, 0x00 },
423 { ZD_CR251, 0x7f },
424 };
425
426 return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
427}
428
429static int al7230b_switch_radio_off(struct zd_rf *rf)
430{
431 struct zd_chip *chip = zd_rf_to_chip(rf);
432 static const struct zd_ioreq16 ioreqs[] = {
433 { ZD_CR11, 0x04 },
434 { ZD_CR251, 0x2f },
435 };
436
437 return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
438}
439
440/* ZD1211B+AL7230B 6m band edge patching differs slightly from other
441 * configurations */
442static int zd1211b_al7230b_patch_6m(struct zd_rf *rf, u8 channel)
443{
444 struct zd_chip *chip = zd_rf_to_chip(rf);
445 struct zd_ioreq16 ioreqs[] = {
446 { ZD_CR128, 0x14 }, { ZD_CR129, 0x12 },
447 };
448
449 /* FIXME: Channel 11 is not the edge for all regulatory domains. */
450 if (channel == 1) {
451 ioreqs[0].value = 0x0e;
452 ioreqs[1].value = 0x10;
453 } else if (channel == 11) {
454 ioreqs[0].value = 0x10;
455 ioreqs[1].value = 0x10;
456 }
457
458 dev_dbg_f(zd_chip_dev(chip), "patching for channel %d\n", channel);
459 return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
460}
461
462int zd_rf_init_al7230b(struct zd_rf *rf)
463{
464 struct zd_chip *chip = zd_rf_to_chip(rf);
465
466 if (zd_chip_is_zd1211b(chip)) {
467 rf->init_hw = zd1211b_al7230b_init_hw;
468 rf->switch_radio_on = zd1211b_al7230b_switch_radio_on;
469 rf->set_channel = zd1211b_al7230b_set_channel;
470 rf->patch_6m_band_edge = zd1211b_al7230b_patch_6m;
471 } else {
472 rf->init_hw = zd1211_al7230b_init_hw;
473 rf->switch_radio_on = zd1211_al7230b_switch_radio_on;
474 rf->set_channel = zd1211_al7230b_set_channel;
475 rf->patch_6m_band_edge = zd_rf_generic_patch_6m;
476 rf->patch_cck_gain = 1;
477 }
478
479 rf->switch_radio_off = al7230b_switch_radio_off;
480
481 return 0;
482}
483

source code of linux/drivers/net/wireless/zydas/zd1211rw/zd_rf_al7230b.c