drivers/staging/vt6656/baseband.c

   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  */
 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
 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  */
 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
 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  */
 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
 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
 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