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  * 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 static const struct vnt_threshold vt3342_vnt_threshold[] = {
 171         {0, 0x00, 0x38},        /* Max sensitivity */
 172         {66, 0x00, 0x43},
 173         {65, 0x00, 0x52},
 174         {64, 0x00, 0x68},
 175         {63, 0x00, 0x80},
 176         {62, 0x00, 0x9c},
 177         {61, 0x00, 0xc0},
 178         {60, 0x00, 0xea},
 179         {59, 0x01, 0x30},
 180         {58, 0x01, 0x70},
 181         {57, 0x01, 0xb0},
 182         {56, 0x02, 0x30},
 183         {55, 0x02, 0xc0},
 184         {53, 0x04, 0x00},
 185         {51, 0x07, 0x00},
 186         {49, 0x0a, 0x00},
 187         {47, 0x11, 0x00},
 188         {45, 0x18, 0x00},
 189         {43, 0x26, 0x00},
 190         {42, 0x36, 0x00},
 191         {41, 0xff, 0x00}
 192 };
 193
 194 /*
 195  * Description: Set Antenna mode
 196  *
 197  * Parameters:
 198  *  In:
 199  *      priv            - Device Structure
 200  *      antenna_mode    - Antenna Mode
 201  *  Out:
 202  *      none
 203  *
 204  * Return Value: none
 205  *
 206  */
 207 int vnt_set_antenna_mode(struct vnt_private *priv, u8 antenna_mode)
 208 {
 209         switch (antenna_mode) {
 210         case ANT_TXA:
 211         case ANT_TXB:
 212                 break;
 213         case ANT_RXA:
 214                 priv->bb_rx_conf &= 0xFC;
 215                 break;
 216         case ANT_RXB:
 217                 priv->bb_rx_conf &= 0xFE;
 218                 priv->bb_rx_conf |= 0x02;
 219                 break;
 220         }
 221
 222         return vnt_control_out(priv, MESSAGE_TYPE_SET_ANTMD,
 223                                (u16)antenna_mode, 0, 0, NULL);
 224 }
 225
 226 /*
 227  * Description: Set Antenna mode
 228  *
 229  * Parameters:
 230  *  In:
 231  *      pDevice          - Device Structure
 232  *      byAntennaMode    - Antenna Mode
 233  *  Out:
 234  *      none
 235  *
 236  * Return Value: none
 237  *
 238  */
 239
 240 int vnt_vt3184_init(struct vnt_private *priv)
 241 {
 242         int ret;
 243         u16 length;
 244         u8 *addr = NULL;
 245         const u8 *c_addr;
 246         u8 data;
 247
 248         ret = vnt_control_in(priv, MESSAGE_TYPE_READ, 0, MESSAGE_REQUEST_EEPROM,
 249                              EEP_MAX_CONTEXT_SIZE, priv->eeprom);
 250         if (ret)
 251                 goto end;
 252
 253         priv->rf_type = priv->eeprom[EEP_OFS_RFTYPE];
 254
 255         dev_dbg(&priv->usb->dev, "RF Type %d\n", priv->rf_type);
 256
 257         if ((priv->rf_type == RF_AL2230) ||
 258             (priv->rf_type == RF_AL2230S) ||
 259             (priv->rf_type == RF_AIROHA7230)) {
 260                 priv->bb_rx_conf = vnt_vt3184_al2230[10];
 261                 length = sizeof(vnt_vt3184_al2230);
 262                 addr = vnt_vt3184_al2230;
 263
 264                 if (priv->rf_type == RF_AIROHA7230)
 265                         addr[0xd7] = 0x06;
 266
 267                 priv->bb_vga[0] = 0x1c;
 268                 priv->bb_vga[1] = 0x10;
 269                 priv->bb_vga[2] = 0x0;
 270                 priv->bb_vga[3] = 0x0;
 271
 272         } else if ((priv->rf_type == RF_VT3226) ||
 273                    (priv->rf_type == RF_VT3226D0) ||
 274                    (priv->rf_type == RF_VT3342A0)) {
 275                 priv->bb_rx_conf = vnt_vt3184_vt3226d0[10];
 276                 length = sizeof(vnt_vt3184_vt3226d0);
 277                 c_addr = vnt_vt3184_vt3226d0;
 278
 279                 priv->bb_vga[0] = 0x20;
 280                 priv->bb_vga[1] = 0x10;
 281                 priv->bb_vga[2] = 0x0;
 282                 priv->bb_vga[3] = 0x0;
 283
 284                 /* Fix VT3226 DFC system timing issue */
 285                 ret = vnt_mac_reg_bits_on(priv, MAC_REG_SOFTPWRCTL2,
 286                                           SOFTPWRCTL_RFLEOPT);
 287                 if (ret)
 288                         goto end;
 289         } else {
 290                 goto end;
 291         }
 292
 293         if (addr)
 294                 c_addr = addr;
 295
 296         ret = vnt_control_out_blocks(priv, VNT_REG_BLOCK_SIZE,
 297                                      MESSAGE_REQUEST_BBREG, length, c_addr);
 298         if (ret)
 299                 goto end;
 300
 301         ret = vnt_control_out(priv, MESSAGE_TYPE_WRITE, 0,
 302                               MESSAGE_REQUEST_BBAGC,
 303                               sizeof(vnt_vt3184_agc), vnt_vt3184_agc);
 304         if (ret)
 305                 goto end;
 306
 307         if ((priv->rf_type == RF_VT3226) ||
 308             (priv->rf_type == RF_VT3342A0) ||
 309             (priv->rf_type == RF_VT3226D0)) {
 310                 data = (priv->rf_type == RF_VT3226D0) ? 0x11 : 0x23;
 311
 312                 ret = vnt_control_out_u8(priv, MESSAGE_REQUEST_MACREG,
 313                                          MAC_REG_ITRTMSET, data);
 314                 if (ret)
 315                         goto end;
 316
 317                 ret = vnt_mac_reg_bits_on(priv, MAC_REG_PAPEDELAY, BIT(0));
 318                 if (ret)
 319                         goto end;
 320         }
 321
 322         ret = vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x04, 0x7f);
 323         if (ret)
 324                 goto end;
 325
 326         ret = vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x0d, 0x01);
 327         if (ret)
 328                 goto end;
 329
 330         ret = vnt_rf_table_download(priv);
 331         if (ret)
 332                 goto end;
 333
 334         /* Fix for TX USB resets from vendors driver */
 335         ret = vnt_control_in(priv, MESSAGE_TYPE_READ, USB_REG4,
 336                              MESSAGE_REQUEST_MEM, sizeof(data), &data);
 337         if (ret)
 338                 goto end;
 339
 340         data |= 0x2;
 341
 342         ret = vnt_control_out(priv, MESSAGE_TYPE_WRITE, USB_REG4,
 343                               MESSAGE_REQUEST_MEM, sizeof(data), &data);
 344
 345 end:
 346         return ret;
 347 }
 348
 349 /*
 350  * Description: Set ShortSlotTime mode
 351  *
 352  * Parameters:
 353  *  In:
 354  *      priv    - Device Structure
 355  *  Out:
 356  *      none
 357  *
 358  * Return Value: none
 359  *
 360  */
 361 int vnt_set_short_slot_time(struct vnt_private *priv)
 362 {
 363         int ret = 0;
 364         u8 bb_vga = 0;
 365
 366         if (priv->short_slot_time)
 367                 priv->bb_rx_conf &= 0xdf;
 368         else
 369                 priv->bb_rx_conf |= 0x20;
 370
 371         ret = vnt_control_in_u8(priv, MESSAGE_REQUEST_BBREG, 0xe7, &bb_vga);
 372         if (ret)
 373                 return ret;
 374
 375         if (bb_vga == priv->bb_vga[0])
 376                 priv->bb_rx_conf |= 0x20;
 377
 378         return vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x0a,
 379                                   priv->bb_rx_conf);
 380 }
 381
 382 int vnt_set_vga_gain_offset(struct vnt_private *priv, u8 data)
 383 {
 384         int ret;
 385
 386         ret = vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0xE7, data);
 387         if (ret)
 388                 return ret;
 389
 390         /* patch for 3253B0 Baseband with Cardbus module */
 391         if (priv->short_slot_time)
 392                 priv->bb_rx_conf &= 0xdf; /* 1101 1111 */
 393         else
 394                 priv->bb_rx_conf |= 0x20; /* 0010 0000 */
 395
 396         return vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x0a,
 397                                   priv->bb_rx_conf);
 398 }
 399
 400 /*
 401  * Description: vnt_set_deep_sleep
 402  *
 403  * Parameters:
 404  *  In:
 405  *      priv    - Device Structure
 406  *  Out:
 407  *      none
 408  *
 409  * Return Value: none
 410  *
 411  */
 412 int vnt_set_deep_sleep(struct vnt_private *priv)
 413 {
 414         int ret = 0;
 415
 416         /* CR12 */
 417         ret = vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x0c, 0x17);
 418         if (ret)
 419                 return ret;
 420
 421         /* CR13 */
 422         return vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x0d, 0xB9);
 423 }
 424
 425 int vnt_exit_deep_sleep(struct vnt_private *priv)
 426 {
 427         int ret = 0;
 428
 429         /* CR12 */
 430         ret = vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x0c, 0x00);
 431         if (ret)
 432                 return ret;
 433
 434         /* CR13 */
 435         return vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x0d, 0x01);
 436 }
 437
 438 int vnt_update_pre_ed_threshold(struct vnt_private *priv, int scanning)
 439 {
 440         const struct vnt_threshold *threshold = NULL;
 441         u8 length;
 442         u8 cr_201, cr_206;
 443         u8 ed_inx;
 444         int ret;
 445
 446         switch (priv->rf_type) {
 447         case RF_AL2230:
 448         case RF_AL2230S:
 449         case RF_AIROHA7230:
 450                 threshold = al2230_vnt_threshold;
 451                 length = ARRAY_SIZE(al2230_vnt_threshold);
 452                 break;
 453
 454         case RF_VT3226:
 455         case RF_VT3226D0:
 456                 threshold = vt3226_vnt_threshold;
 457                 length = ARRAY_SIZE(vt3226_vnt_threshold);
 458                 break;
 459
 460         case RF_VT3342A0:
 461                 threshold = vt3342_vnt_threshold;
 462                 length = ARRAY_SIZE(vt3342_vnt_threshold);
 463                 break;
 464         }
 465
 466         if (!threshold)
 467                 return -EINVAL;
 468
 469         for (ed_inx = scanning ? 0 : length - 1; ed_inx > 0; ed_inx--) {
 470                 if (priv->bb_pre_ed_rssi <= threshold[ed_inx].bb_pre_ed_rssi)
 471                         break;
 472         }
 473
 474         cr_201 = threshold[ed_inx].cr_201;
 475         cr_206 = threshold[ed_inx].cr_206;
 476
 477         if (ed_inx == priv->bb_pre_ed_index && !scanning)
 478                 return 0;
 479
 480         priv->bb_pre_ed_index = ed_inx;
 481
 482         dev_dbg(&priv->usb->dev, "%s bb_pre_ed_rssi %d\n",
 483                 __func__, priv->bb_pre_ed_rssi);
 484
 485         ret = vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0xc9, cr_201);
 486         if (ret)
 487                 return ret;
 488
 489         return vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0xce, cr_206);
 490 }
 491