1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
4 * All rights reserved.
5 *
6 * File: baseband.c
7 *
8 * Purpose: Implement functions to access baseband
9 *
10 * Author: Jerry Chen
11 *
12 * Date: Jun. 5, 2002
13 *
14 * Functions:
15 * vnt_get_frame_time - Calculate data frame transmitting time
16 * vnt_get_phy_field - Calculate PhyLength, PhyService and Phy
17 * Signal parameter for baseband Tx
18 * vnt_vt3184_init - VIA VT3184 baseband chip init code
19 *
20 * Revision History:
21 *
22 *
23 */
24
25 #include <linux/bits.h>
26 #include <linux/errno.h>
27 #include <linux/kernel.h>
28 #include "device.h"
29 #include "mac.h"
30 #include "baseband.h"
31 #include "rf.h"
32 #include "usbpipe.h"
33
34 static const u8 vnt_vt3184_agc[] = {
35 0x00, 0x00, 0x02, 0x02, 0x04, 0x04, 0x06, 0x06,
36 0x08, 0x08, 0x0a, 0x0a, 0x0c, 0x0c, 0x0e, 0x0e, /* 0x0f */
37 0x10, 0x10, 0x12, 0x12, 0x14, 0x14, 0x16, 0x16,
38 0x18, 0x18, 0x1a, 0x1a, 0x1c, 0x1c, 0x1e, 0x1e, /* 0x1f */
39 0x20, 0x20, 0x22, 0x22, 0x24, 0x24, 0x26, 0x26,
40 0x28, 0x28, 0x2a, 0x2a, 0x2c, 0x2c, 0x2e, 0x2e, /* 0x2f */
41 0x30, 0x30, 0x32, 0x32, 0x34, 0x34, 0x36, 0x36,
42 0x38, 0x38, 0x3a, 0x3a, 0x3c, 0x3c, 0x3e, 0x3e /* 0x3f */
43 };
44
45 static u8 vnt_vt3184_al2230[] = {
46 0x31, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00,
47 0x70, 0x45, 0x2a, 0x76, 0x00, 0x00, 0x80, 0x00, /* 0x0f */
48 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
49 0x00, 0x00, 0x00, 0x8e, 0x0a, 0x00, 0x00, 0x00, /* 0x1f */
50 0x00, 0x00, 0x00, 0x00, 0x00, 0x4a, 0x00, 0x00,
51 0x00, 0x00, 0x00, 0x00, 0x00, 0x4a, 0x00, 0x0c, /* 0x2f */
52 0x26, 0x5b, 0x00, 0x00, 0x00, 0x00, 0xaa, 0xaa,
53 0xff, 0xff, 0x79, 0x00, 0x00, 0x0b, 0x48, 0x04, /* 0x3f */
54 0x00, 0x08, 0x00, 0x08, 0x08, 0x14, 0x05, 0x09,
55 0x00, 0x00, 0x00, 0x00, 0x09, 0x73, 0x00, 0xc5, /* 0x4f */
56 0x00, 0x19, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
57 0x00, 0xd0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x5f */
58 0xe4, 0x80, 0x00, 0x00, 0x00, 0x00, 0x98, 0x0a,
59 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x01, 0x00, /* 0x6f */
60 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
61 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x7f */
62 0x8c, 0x01, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00,
63 0x08, 0x00, 0x1f, 0xb7, 0x88, 0x47, 0xaa, 0x00, /* 0x8f */
64 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xeb,
65 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, /* 0x9f */
66 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00,
67 0x18, 0x00, 0x00, 0x00, 0x00, 0x15, 0x00, 0x18, /* 0xaf */
68 0x38, 0x30, 0x00, 0x00, 0xff, 0x0f, 0xe4, 0xe2,
69 0x00, 0x00, 0x00, 0x03, 0x01, 0x00, 0x00, 0x00, /* 0xbf */
70 0x18, 0x20, 0x07, 0x18, 0xff, 0xff, 0x0e, 0x0a,
71 0x0e, 0x00, 0x82, 0xa7, 0x3c, 0x10, 0x30, 0x05, /* 0xcf */
72 0x40, 0x12, 0x00, 0x00, 0x10, 0x28, 0x80, 0x2a,
73 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xdf */
74 0x00, 0xf3, 0x00, 0x00, 0x00, 0x10, 0x00, 0x12,
75 0x00, 0xf4, 0x00, 0xff, 0x79, 0x20, 0x30, 0x05, /* 0xef */
76 0x00, 0x3e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
77 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 /* 0xff */
78 };
79
80 /* {{RobertYu:20060515, new BB setting for VT3226D0 */
81 static const u8 vnt_vt3184_vt3226d0[] = {
82 0x31, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00,
83 0x70, 0x45, 0x2a, 0x76, 0x00, 0x00, 0x80, 0x00, /* 0x0f */
84 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
85 0x00, 0x00, 0x00, 0x8e, 0x0a, 0x00, 0x00, 0x00, /* 0x1f */
86 0x00, 0x00, 0x00, 0x00, 0x00, 0x4a, 0x00, 0x00,
87 0x00, 0x00, 0x00, 0x00, 0x00, 0x4a, 0x00, 0x0c, /* 0x2f */
88 0x26, 0x5b, 0x00, 0x00, 0x00, 0x00, 0xaa, 0xaa,
89 0xff, 0xff, 0x79, 0x00, 0x00, 0x0b, 0x48, 0x04, /* 0x3f */
90 0x00, 0x08, 0x00, 0x08, 0x08, 0x14, 0x05, 0x09,
91 0x00, 0x00, 0x00, 0x00, 0x09, 0x73, 0x00, 0xc5, /* 0x4f */
92 0x00, 0x19, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
93 0x00, 0xd0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x5f */
94 0xe4, 0x80, 0x00, 0x00, 0x00, 0x00, 0x98, 0x0a,
95 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x01, 0x00, /* 0x6f */
96 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
97 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x7f */
98 0x8c, 0x01, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00,
99 0x08, 0x00, 0x1f, 0xb7, 0x88, 0x47, 0xaa, 0x00, /* 0x8f */
100 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xeb,
101 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, /* 0x9f */
102 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00,
103 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, /* 0xaf */
104 0x38, 0x30, 0x00, 0x00, 0xff, 0x0f, 0xe4, 0xe2,
105 0x00, 0x00, 0x00, 0x03, 0x01, 0x00, 0x00, 0x00, /* 0xbf */
106 0x18, 0x20, 0x07, 0x18, 0xff, 0xff, 0x10, 0x0a,
107 0x0e, 0x00, 0x84, 0xa7, 0x3c, 0x10, 0x24, 0x05, /* 0xcf */
108 0x40, 0x12, 0x00, 0x00, 0x10, 0x28, 0x80, 0x2a,
109 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xdf */
110 0x00, 0xf3, 0x00, 0x00, 0x00, 0x10, 0x00, 0x10,
111 0x00, 0xf4, 0x00, 0xff, 0x79, 0x20, 0x30, 0x08, /* 0xef */
112 0x00, 0x3e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
113 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 /* 0xff */
114 };
115
116 struct vnt_threshold {
117 u8 bb_pre_ed_rssi;
118 u8 cr_201;
119 u8 cr_206;
120 };
121
122 static const struct vnt_threshold al2230_vnt_threshold[] = {
123 {0, 0x00, 0x30}, /* Max sensitivity */
124 {68, 0x00, 0x36},
125 {67, 0x00, 0x43},
126 {66, 0x00, 0x51},
127 {65, 0x00, 0x62},
128 {64, 0x00, 0x79},
129 {63, 0x00, 0x93},
130 {62, 0x00, 0xb9},
131 {61, 0x00, 0xe3},
132 {60, 0x01, 0x18},
133 {59, 0x01, 0x54},
134 {58, 0x01, 0xa0},
135 {57, 0x02, 0x20},
136 {56, 0x02, 0xa0},
137 {55, 0x03, 0x00},
138 {53, 0x06, 0x00},
139 {51, 0x09, 0x00},
140 {49, 0x0e, 0x00},
141 {47, 0x15, 0x00},
142 {46, 0x1a, 0x00},
143 {45, 0xff, 0x00}
144 };
145
146 static const struct vnt_threshold vt3226_vnt_threshold[] = {
147 {0, 0x00, 0x24}, /* Max sensitivity */
148 {68, 0x00, 0x2d},
149 {67, 0x00, 0x36},
150 {66, 0x00, 0x43},
151 {65, 0x00, 0x52},
152 {64, 0x00, 0x68},
153 {63, 0x00, 0x80},
154 {62, 0x00, 0x9c},
155 {61, 0x00, 0xc0},
156 {60, 0x00, 0xea},
157 {59, 0x01, 0x30},
158 {58, 0x01, 0x70},
159 {57, 0x01, 0xb0},
160 {56, 0x02, 0x30},
161 {55, 0x02, 0xc0},
162 {53, 0x04, 0x00},
163 {51, 0x07, 0x00},
164 {49, 0x0a, 0x00},
165 {47, 0x11, 0x00},
166 {45, 0x18, 0x00},
167 {43, 0x26, 0x00},
168 {42, 0x36, 0x00},
169 {41, 0xff, 0x00}
170 };
171
172 static const struct vnt_threshold vt3342_vnt_threshold[] = {
173 {0, 0x00, 0x38}, /* Max sensitivity */
174 {66, 0x00, 0x43},
175 {65, 0x00, 0x52},
176 {64, 0x00, 0x68},
177 {63, 0x00, 0x80},
178 {62, 0x00, 0x9c},
179 {61, 0x00, 0xc0},
180 {60, 0x00, 0xea},
181 {59, 0x01, 0x30},
182 {58, 0x01, 0x70},
183 {57, 0x01, 0xb0},
184 {56, 0x02, 0x30},
185 {55, 0x02, 0xc0},
186 {53, 0x04, 0x00},
187 {51, 0x07, 0x00},
188 {49, 0x0a, 0x00},
189 {47, 0x11, 0x00},
190 {45, 0x18, 0x00},
191 {43, 0x26, 0x00},
192 {42, 0x36, 0x00},
193 {41, 0xff, 0x00}
194 };
195
196 /*
197 * Description: Set Antenna mode
198 *
199 * Parameters:
200 * In:
201 * priv - Device Structure
202 * antenna_mode - Antenna Mode
203 * Out:
204 * none
205 *
206 * Return Value: none
207 *
208 */
vnt_set_antenna_mode(struct vnt_private * priv,u8 antenna_mode)209 int vnt_set_antenna_mode(struct vnt_private *priv, u8 antenna_mode)
210 {
211 switch (antenna_mode) {
212 case ANT_TXA:
213 case ANT_TXB:
214 break;
215 case ANT_RXA:
216 priv->bb_rx_conf &= 0xFC;
217 break;
218 case ANT_RXB:
219 priv->bb_rx_conf &= 0xFE;
220 priv->bb_rx_conf |= 0x02;
221 break;
222 }
223
224 return vnt_control_out(priv, MESSAGE_TYPE_SET_ANTMD,
225 (u16)antenna_mode, 0, 0, NULL);
226 }
227
228 /*
229 * Description: Set Antenna mode
230 *
231 * Parameters:
232 * In:
233 * pDevice - Device Structure
234 * byAntennaMode - Antenna Mode
235 * Out:
236 * none
237 *
238 * Return Value: none
239 *
240 */
241
vnt_vt3184_init(struct vnt_private * priv)242 int vnt_vt3184_init(struct vnt_private *priv)
243 {
244 int ret;
245 u16 length;
246 u8 *addr = NULL;
247 const u8 *c_addr;
248 u8 data;
249
250 ret = vnt_control_in(priv, MESSAGE_TYPE_READ, 0, MESSAGE_REQUEST_EEPROM,
251 EEP_MAX_CONTEXT_SIZE, priv->eeprom);
252 if (ret)
253 goto end;
254
255 priv->rf_type = priv->eeprom[EEP_OFS_RFTYPE];
256
257 dev_dbg(&priv->usb->dev, "RF Type %d\n", priv->rf_type);
258
259 if ((priv->rf_type == RF_AL2230) ||
260 (priv->rf_type == RF_AL2230S) ||
261 (priv->rf_type == RF_AIROHA7230)) {
262 priv->bb_rx_conf = vnt_vt3184_al2230[10];
263 length = sizeof(vnt_vt3184_al2230);
264 addr = vnt_vt3184_al2230;
265
266 if (priv->rf_type == RF_AIROHA7230)
267 addr[0xd7] = 0x06;
268
269 priv->bb_vga[0] = 0x1c;
270 priv->bb_vga[1] = 0x10;
271 priv->bb_vga[2] = 0x0;
272 priv->bb_vga[3] = 0x0;
273
274 } else if ((priv->rf_type == RF_VT3226) ||
275 (priv->rf_type == RF_VT3226D0) ||
276 (priv->rf_type == RF_VT3342A0)) {
277 priv->bb_rx_conf = vnt_vt3184_vt3226d0[10];
278 length = sizeof(vnt_vt3184_vt3226d0);
279 c_addr = vnt_vt3184_vt3226d0;
280
281 priv->bb_vga[0] = 0x20;
282 priv->bb_vga[1] = 0x10;
283 priv->bb_vga[2] = 0x0;
284 priv->bb_vga[3] = 0x0;
285
286 /* Fix VT3226 DFC system timing issue */
287 ret = vnt_mac_reg_bits_on(priv, MAC_REG_SOFTPWRCTL2,
288 SOFTPWRCTL_RFLEOPT);
289 if (ret)
290 goto end;
291 } else {
292 goto end;
293 }
294
295 if (addr)
296 c_addr = addr;
297
298 ret = vnt_control_out_blocks(priv, VNT_REG_BLOCK_SIZE,
299 MESSAGE_REQUEST_BBREG, length, c_addr);
300 if (ret)
301 goto end;
302
303 ret = vnt_control_out(priv, MESSAGE_TYPE_WRITE, 0,
304 MESSAGE_REQUEST_BBAGC,
305 sizeof(vnt_vt3184_agc), vnt_vt3184_agc);
306 if (ret)
307 goto end;
308
309 if ((priv->rf_type == RF_VT3226) ||
310 (priv->rf_type == RF_VT3342A0) ||
311 (priv->rf_type == RF_VT3226D0)) {
312 data = (priv->rf_type == RF_VT3226D0) ? 0x11 : 0x23;
313
314 ret = vnt_control_out_u8(priv, MESSAGE_REQUEST_MACREG,
315 MAC_REG_ITRTMSET, data);
316 if (ret)
317 goto end;
318
319 ret = vnt_mac_reg_bits_on(priv, MAC_REG_PAPEDELAY, BIT(0));
320 if (ret)
321 goto end;
322 }
323
324 ret = vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x04, 0x7f);
325 if (ret)
326 goto end;
327
328 ret = vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x0d, 0x01);
329 if (ret)
330 goto end;
331
332 ret = vnt_rf_table_download(priv);
333 if (ret)
334 goto end;
335
336 /* Fix for TX USB resets from vendors driver */
337 ret = vnt_control_in(priv, MESSAGE_TYPE_READ, USB_REG4,
338 MESSAGE_REQUEST_MEM, sizeof(data), &data);
339 if (ret)
340 goto end;
341
342 data |= 0x2;
343
344 ret = vnt_control_out(priv, MESSAGE_TYPE_WRITE, USB_REG4,
345 MESSAGE_REQUEST_MEM, sizeof(data), &data);
346
347 end:
348 return ret;
349 }
350
351 /*
352 * Description: Set ShortSlotTime mode
353 *
354 * Parameters:
355 * In:
356 * priv - Device Structure
357 * Out:
358 * none
359 *
360 * Return Value: none
361 *
362 */
vnt_set_short_slot_time(struct vnt_private * priv)363 int vnt_set_short_slot_time(struct vnt_private *priv)
364 {
365 int ret = 0;
366 u8 bb_vga = 0;
367
368 if (priv->short_slot_time)
369 priv->bb_rx_conf &= 0xdf;
370 else
371 priv->bb_rx_conf |= 0x20;
372
373 ret = vnt_control_in_u8(priv, MESSAGE_REQUEST_BBREG, 0xe7, &bb_vga);
374 if (ret)
375 return ret;
376
377 if (bb_vga == priv->bb_vga[0])
378 priv->bb_rx_conf |= 0x20;
379
380 return vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x0a,
381 priv->bb_rx_conf);
382 }
383
vnt_set_vga_gain_offset(struct vnt_private * priv,u8 data)384 int vnt_set_vga_gain_offset(struct vnt_private *priv, u8 data)
385 {
386 int ret;
387
388 ret = vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0xE7, data);
389 if (ret)
390 return ret;
391
392 /* patch for 3253B0 Baseband with Cardbus module */
393 if (priv->short_slot_time)
394 priv->bb_rx_conf &= 0xdf; /* 1101 1111 */
395 else
396 priv->bb_rx_conf |= 0x20; /* 0010 0000 */
397
398 return vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x0a,
399 priv->bb_rx_conf);
400 }
401
402 /*
403 * Description: vnt_set_deep_sleep
404 *
405 * Parameters:
406 * In:
407 * priv - Device Structure
408 * Out:
409 * none
410 *
411 * Return Value: none
412 *
413 */
vnt_set_deep_sleep(struct vnt_private * priv)414 int vnt_set_deep_sleep(struct vnt_private *priv)
415 {
416 int ret = 0;
417
418 /* CR12 */
419 ret = vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x0c, 0x17);
420 if (ret)
421 return ret;
422
423 /* CR13 */
424 return vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x0d, 0xB9);
425 }
426
vnt_exit_deep_sleep(struct vnt_private * priv)427 int vnt_exit_deep_sleep(struct vnt_private *priv)
428 {
429 int ret = 0;
430
431 /* CR12 */
432 ret = vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x0c, 0x00);
433 if (ret)
434 return ret;
435
436 /* CR13 */
437 return vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x0d, 0x01);
438 }
439
vnt_update_pre_ed_threshold(struct vnt_private * priv,int scanning)440 int vnt_update_pre_ed_threshold(struct vnt_private *priv, int scanning)
441 {
442 const struct vnt_threshold *threshold = NULL;
443 u8 length;
444 u8 cr_201, cr_206;
445 u8 ed_inx;
446 int ret;
447
448 switch (priv->rf_type) {
449 case RF_AL2230:
450 case RF_AL2230S:
451 case RF_AIROHA7230:
452 threshold = al2230_vnt_threshold;
453 length = ARRAY_SIZE(al2230_vnt_threshold);
454 break;
455
456 case RF_VT3226:
457 case RF_VT3226D0:
458 threshold = vt3226_vnt_threshold;
459 length = ARRAY_SIZE(vt3226_vnt_threshold);
460 break;
461
462 case RF_VT3342A0:
463 threshold = vt3342_vnt_threshold;
464 length = ARRAY_SIZE(vt3342_vnt_threshold);
465 break;
466 }
467
468 if (!threshold)
469 return -EINVAL;
470
471 for (ed_inx = scanning ? 0 : length - 1; ed_inx > 0; ed_inx--) {
472 if (priv->bb_pre_ed_rssi <= threshold[ed_inx].bb_pre_ed_rssi)
473 break;
474 }
475
476 cr_201 = threshold[ed_inx].cr_201;
477 cr_206 = threshold[ed_inx].cr_206;
478
479 if (ed_inx == priv->bb_pre_ed_index && !scanning)
480 return 0;
481
482 priv->bb_pre_ed_index = ed_inx;
483
484 dev_dbg(&priv->usb->dev, "%s bb_pre_ed_rssi %d\n",
485 __func__, priv->bb_pre_ed_rssi);
486
487 ret = vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0xc9, cr_201);
488 if (ret)
489 return ret;
490
491 return vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0xce, cr_206);
492 }
493
494
