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