drivers/net/wireless/rtlwifi/rtl8192ce/rf.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2009-2012  Realtek Corporation.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  17  *
  18  * The full GNU General Public License is included in this distribution in the
  19  * file called LICENSE.
  20  *
  21  * Contact Information:
  22  * wlanfae <wlanfae@realtek.com>
  23  * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
  24  * Hsinchu 300, Taiwan.
  25  *
  26  * Larry Finger <Larry.Finger@lwfinger.net>
  27  *
  28  *****************************************************************************/
  29
  30 #include "../wifi.h"
  31 #include "reg.h"
  32 #include "def.h"
  33 #include "phy.h"
  34 #include "rf.h"
  35 #include "dm.h"
  36
  37 static bool _rtl92ce_phy_rf6052_config_parafile(struct ieee80211_hw *hw);
  38
  39 void rtl92ce_phy_rf6052_set_bandwidth(struct ieee80211_hw *hw, u8 bandwidth)
  40 {
  41         struct rtl_priv *rtlpriv = rtl_priv(hw);
  42         struct rtl_phy *rtlphy = &(rtlpriv->phy);
  43
  44         switch (bandwidth) {
  45         case HT_CHANNEL_WIDTH_20:
  46                 rtlphy->rfreg_chnlval[0] = ((rtlphy->rfreg_chnlval[0] &
  47                                              0xfffff3ff) | 0x0400);
  48                 rtl_set_rfreg(hw, RF90_PATH_A, RF_CHNLBW, RFREG_OFFSET_MASK,
  49                               rtlphy->rfreg_chnlval[0]);
  50                 break;
  51         case HT_CHANNEL_WIDTH_20_40:
  52                 rtlphy->rfreg_chnlval[0] = ((rtlphy->rfreg_chnlval[0] &
  53                                              0xfffff3ff));
  54                 rtl_set_rfreg(hw, RF90_PATH_A, RF_CHNLBW, RFREG_OFFSET_MASK,
  55                               rtlphy->rfreg_chnlval[0]);
  56                 break;
  57         default:
  58                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
  59                          "unknown bandwidth: %#X\n", bandwidth);
  60                 break;
  61         }
  62 }
  63
  64 void rtl92ce_phy_rf6052_set_cck_txpower(struct ieee80211_hw *hw,
  65                                         u8 *ppowerlevel)
  66 {
  67         struct rtl_priv *rtlpriv = rtl_priv(hw);
  68         struct rtl_phy *rtlphy = &(rtlpriv->phy);
  69         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
  70         struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
  71         u32 tx_agc[2] = {0, 0}, tmpval;
  72         bool turbo_scanoff = false;
  73         u8 idx1, idx2;
  74         u8 *ptr;
  75
  76         if (rtlefuse->eeprom_regulatory != 0)
  77                 turbo_scanoff = true;
  78
  79         if (mac->act_scanning) {
  80                 tx_agc[RF90_PATH_A] = 0x3f3f3f3f;
  81                 tx_agc[RF90_PATH_B] = 0x3f3f3f3f;
  82
  83                 if (turbo_scanoff) {
  84                         for (idx1 = RF90_PATH_A; idx1 <= RF90_PATH_B; idx1++) {
  85                                 tx_agc[idx1] = ppowerlevel[idx1] |
  86                                     (ppowerlevel[idx1] << 8) |
  87                                     (ppowerlevel[idx1] << 16) |
  88                                     (ppowerlevel[idx1] << 24);
  89                         }
  90                 }
  91         } else {
  92                 for (idx1 = RF90_PATH_A; idx1 <= RF90_PATH_B; idx1++) {
  93                         tx_agc[idx1] = ppowerlevel[idx1] |
  94                             (ppowerlevel[idx1] << 8) |
  95                             (ppowerlevel[idx1] << 16) |
  96                             (ppowerlevel[idx1] << 24);
  97                 }
  98
  99                 if (rtlefuse->eeprom_regulatory == 0) {
 100                         tmpval = (rtlphy->mcs_offset[0][6]) +
 101                             (rtlphy->mcs_offset[0][7] << 8);
 102                         tx_agc[RF90_PATH_A] += tmpval;
 103
 104                         tmpval = (rtlphy->mcs_offset[0][14]) +
 105                                  (rtlphy->mcs_offset[0][15] << 24);
 106                         tx_agc[RF90_PATH_B] += tmpval;
 107                 }
 108         }
 109
 110         for (idx1 = RF90_PATH_A; idx1 <= RF90_PATH_B; idx1++) {
 111                 ptr = (u8 *) (&(tx_agc[idx1]));
 112                 for (idx2 = 0; idx2 < 4; idx2++) {
 113                         if (*ptr > RF6052_MAX_TX_PWR)
 114                                 *ptr = RF6052_MAX_TX_PWR;
 115                         ptr++;
 116                 }
 117         }
 118
 119         tmpval = tx_agc[RF90_PATH_A] & 0xff;
 120         rtl_set_bbreg(hw, RTXAGC_A_CCK1_MCS32, MASKBYTE1, tmpval);
 121
 122         RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 123                 "CCK PWR 1M (rf-A) = 0x%x (reg 0x%x)\n",
 124                 tmpval, RTXAGC_A_CCK1_MCS32);
 125
 126         tmpval = tx_agc[RF90_PATH_A] >> 8;
 127
 128         tmpval = tmpval & 0xff00ffff;
 129
 130         rtl_set_bbreg(hw, RTXAGC_B_CCK11_A_CCK2_11, 0xffffff00, tmpval);
 131
 132         RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 133                 "CCK PWR 2~11M (rf-A) = 0x%x (reg 0x%x)\n",
 134                 tmpval, RTXAGC_B_CCK11_A_CCK2_11);
 135
 136         tmpval = tx_agc[RF90_PATH_B] >> 24;
 137         rtl_set_bbreg(hw, RTXAGC_B_CCK11_A_CCK2_11, MASKBYTE0, tmpval);
 138
 139         RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 140                 "CCK PWR 11M (rf-B) = 0x%x (reg 0x%x)\n",
 141                 tmpval, RTXAGC_B_CCK11_A_CCK2_11);
 142
 143         tmpval = tx_agc[RF90_PATH_B] & 0x00ffffff;
 144         rtl_set_bbreg(hw, RTXAGC_B_CCK1_55_MCS32, 0xffffff00, tmpval);
 145
 146         RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 147                 "CCK PWR 1~5.5M (rf-B) = 0x%x (reg 0x%x)\n",
 148                 tmpval, RTXAGC_B_CCK1_55_MCS32);
 149 }
 150
 151 static void rtl92c_phy_get_power_base(struct ieee80211_hw *hw,
 152                                       u8 *ppowerlevel, u8 channel,
 153                                       u32 *ofdmbase, u32 *mcsbase)
 154 {
 155         struct rtl_priv *rtlpriv = rtl_priv(hw);
 156         struct rtl_phy *rtlphy = &(rtlpriv->phy);
 157         struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
 158         u32 powerBase0, powerBase1;
 159         u8 legacy_pwrdiff, ht20_pwrdiff;
 160         u8 i, powerlevel[2];
 161
 162         for (i = 0; i < 2; i++) {
 163                 powerlevel[i] = ppowerlevel[i];
 164                 legacy_pwrdiff = rtlefuse->txpwr_legacyhtdiff[i][channel - 1];
 165                 powerBase0 = powerlevel[i] + legacy_pwrdiff;
 166
 167                 powerBase0 = (powerBase0 << 24) | (powerBase0 << 16) |
 168                     (powerBase0 << 8) | powerBase0;
 169                 *(ofdmbase + i) = powerBase0;
 170                 RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 171                         " [OFDM power base index rf(%c) = 0x%x]\n",
 172                         i == 0 ? 'A' : 'B', *(ofdmbase + i));
 173         }
 174
 175         for (i = 0; i < 2; i++) {
 176                 if (rtlphy->current_chan_bw == HT_CHANNEL_WIDTH_20) {
 177                         ht20_pwrdiff = rtlefuse->txpwr_ht20diff[i][channel - 1];
 178                         powerlevel[i] += ht20_pwrdiff;
 179                 }
 180                 powerBase1 = powerlevel[i];
 181                 powerBase1 = (powerBase1 << 24) |
 182                     (powerBase1 << 16) | (powerBase1 << 8) | powerBase1;
 183
 184                 *(mcsbase + i) = powerBase1;
 185
 186                 RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 187                         " [MCS power base index rf(%c) = 0x%x]\n",
 188                         i == 0 ? 'A' : 'B', *(mcsbase + i));
 189         }
 190 }
 191
 192 static void _rtl92c_get_txpower_writeval_by_regulatory(struct ieee80211_hw *hw,
 193                                                        u8 channel, u8 index,
 194                                                        u32 *powerBase0,
 195                                                        u32 *powerBase1,
 196                                                        u32 *p_outwriteval)
 197 {
 198         struct rtl_priv *rtlpriv = rtl_priv(hw);
 199         struct rtl_phy *rtlphy = &(rtlpriv->phy);
 200         struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
 201         u8 i, chnlgroup = 0, pwr_diff_limit[4];
 202         u32 writeVal, customer_limit, rf;
 203
 204         for (rf = 0; rf < 2; rf++) {
 205                 switch (rtlefuse->eeprom_regulatory) {
 206                 case 0:
 207                         chnlgroup = 0;
 208
 209                         writeVal = rtlphy->mcs_offset[chnlgroup][index +
 210                             (rf ? 8 : 0)]
 211                             + ((index < 2) ? powerBase0[rf] : powerBase1[rf]);
 212
 213                         RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 214                                 "RTK better performance, writeVal(%c) = 0x%x\n",
 215                                 rf == 0 ? 'A' : 'B', writeVal);
 216                         break;
 217                 case 1:
 218                         if (rtlphy->current_chan_bw == HT_CHANNEL_WIDTH_20_40) {
 219                                 writeVal = ((index < 2) ? powerBase0[rf] :
 220                                             powerBase1[rf]);
 221
 222                                 RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 223                                         "Realtek regulatory, 40MHz, writeVal(%c) = 0x%x\n",
 224                                         rf == 0 ? 'A' : 'B', writeVal);
 225                         } else {
 226                                 if (rtlphy->pwrgroup_cnt == 1)
 227                                         chnlgroup = 0;
 228                                 if (rtlphy->pwrgroup_cnt >= 3) {
 229                                         if (channel <= 3)
 230                                                 chnlgroup = 0;
 231                                         else if (channel >= 4 && channel <= 9)
 232                                                 chnlgroup = 1;
 233                                         else if (channel > 9)
 234                                                 chnlgroup = 2;
 235                                         if (rtlphy->pwrgroup_cnt == 4)
 236                                                 chnlgroup++;
 237                                 }
 238
 239                                 writeVal = rtlphy->mcs_offset[chnlgroup]
 240                                     [index + (rf ? 8 : 0)] + ((index < 2) ?
 241                                                               powerBase0[rf] :
 242                                                               powerBase1[rf]);
 243
 244                                 RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 245                                         "Realtek regulatory, 20MHz, writeVal(%c) = 0x%x\n",
 246                                         rf == 0 ? 'A' : 'B', writeVal);
 247                         }
 248                         break;
 249                 case 2:
 250                         writeVal =
 251                             ((index < 2) ? powerBase0[rf] : powerBase1[rf]);
 252
 253                         RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 254                                 "Better regulatory, writeVal(%c) = 0x%x\n",
 255                                 rf == 0 ? 'A' : 'B', writeVal);
 256                         break;
 257                 case 3:
 258                         chnlgroup = 0;
 259
 260                         if (rtlphy->current_chan_bw == HT_CHANNEL_WIDTH_20_40) {
 261                                 RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 262                                         "customer's limit, 40MHz rf(%c) = 0x%x\n",
 263                                         rf == 0 ? 'A' : 'B',
 264                                         rtlefuse->pwrgroup_ht40[rf][channel -
 265                                                                     1]);
 266                         } else {
 267                                 RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 268                                         "customer's limit, 20MHz rf(%c) = 0x%x\n",
 269                                         rf == 0 ? 'A' : 'B',
 270                                         rtlefuse->pwrgroup_ht20[rf][channel -
 271                                                                     1]);
 272                         }
 273                         for (i = 0; i < 4; i++) {
 274                                 pwr_diff_limit[i] = (u8) ((rtlphy->mcs_offset
 275                                           [chnlgroup][index +
 276                                           (rf ? 8 : 0)] & (0x7f << (i * 8))) >>
 277                                           (i * 8));
 278
 279                                 if (rtlphy->current_chan_bw ==
 280                                     HT_CHANNEL_WIDTH_20_40) {
 281                                         if (pwr_diff_limit[i] >
 282                                             rtlefuse->
 283                                             pwrgroup_ht40[rf][channel - 1])
 284                                                 pwr_diff_limit[i] =
 285                                                     rtlefuse->pwrgroup_ht40[rf]
 286                                                     [channel - 1];
 287                                 } else {
 288                                         if (pwr_diff_limit[i] >
 289                                             rtlefuse->
 290                                             pwrgroup_ht20[rf][channel - 1])
 291                                                 pwr_diff_limit[i] =
 292                                                     rtlefuse->pwrgroup_ht20[rf]
 293                                                     [channel - 1];
 294                                 }
 295                         }
 296
 297                         customer_limit = (pwr_diff_limit[3] << 24) |
 298                             (pwr_diff_limit[2] << 16) |
 299                             (pwr_diff_limit[1] << 8) | (pwr_diff_limit[0]);
 300
 301                         RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 302                                 "Customer's limit rf(%c) = 0x%x\n",
 303                                 rf == 0 ? 'A' : 'B', customer_limit);
 304
 305                         writeVal = customer_limit +
 306                             ((index < 2) ? powerBase0[rf] : powerBase1[rf]);
 307
 308                         RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 309                                 "Customer, writeVal rf(%c)= 0x%x\n",
 310                                 rf == 0 ? 'A' : 'B', writeVal);
 311                         break;
 312                 default:
 313                         chnlgroup = 0;
 314                         writeVal = rtlphy->mcs_offset[chnlgroup]
 315                             [index + (rf ? 8 : 0)]
 316                             + ((index < 2) ? powerBase0[rf] : powerBase1[rf]);
 317
 318                         RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 319                                 "RTK better performance, writeVal rf(%c) = 0x%x\n",
 320                                 rf == 0 ? 'A' : 'B', writeVal);
 321                         break;
 322                 }
 323
 324                 if (rtlpriv->dm.dynamic_txhighpower_lvl == TXHIGHPWRLEVEL_BT1)
 325                         writeVal = writeVal - 0x06060606;
 326                 else if (rtlpriv->dm.dynamic_txhighpower_lvl ==
 327                          TXHIGHPWRLEVEL_BT2)
 328                         writeVal = writeVal - 0x0c0c0c0c;
 329                 *(p_outwriteval + rf) = writeVal;
 330         }
 331 }
 332
 333 static void _rtl92c_write_ofdm_power_reg(struct ieee80211_hw *hw,
 334                                          u8 index, u32 *pValue)
 335 {
 336         struct rtl_priv *rtlpriv = rtl_priv(hw);
 337         struct rtl_phy *rtlphy = &(rtlpriv->phy);
 338
 339         u16 regoffset_a[6] = {
 340                 RTXAGC_A_RATE18_06, RTXAGC_A_RATE54_24,
 341                 RTXAGC_A_MCS03_MCS00, RTXAGC_A_MCS07_MCS04,
 342                 RTXAGC_A_MCS11_MCS08, RTXAGC_A_MCS15_MCS12
 343         };
 344         u16 regoffset_b[6] = {
 345                 RTXAGC_B_RATE18_06, RTXAGC_B_RATE54_24,
 346                 RTXAGC_B_MCS03_MCS00, RTXAGC_B_MCS07_MCS04,
 347                 RTXAGC_B_MCS11_MCS08, RTXAGC_B_MCS15_MCS12
 348         };
 349         u8 i, rf, pwr_val[4];
 350         u32 writeVal;
 351         u16 regoffset;
 352
 353         for (rf = 0; rf < 2; rf++) {
 354                 writeVal = pValue[rf];
 355                 for (i = 0; i < 4; i++) {
 356                         pwr_val[i] = (u8) ((writeVal & (0x7f <<
 357                                                         (i * 8))) >> (i * 8));
 358
 359                         if (pwr_val[i] > RF6052_MAX_TX_PWR)
 360                                 pwr_val[i] = RF6052_MAX_TX_PWR;
 361                 }
 362                 writeVal = (pwr_val[3] << 24) | (pwr_val[2] << 16) |
 363                     (pwr_val[1] << 8) | pwr_val[0];
 364
 365                 if (rf == 0)
 366                         regoffset = regoffset_a[index];
 367                 else
 368                         regoffset = regoffset_b[index];
 369                 rtl_set_bbreg(hw, regoffset, MASKDWORD, writeVal);
 370
 371                 RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 372                         "Set 0x%x = %08x\n", regoffset, writeVal);
 373
 374                 if (((get_rf_type(rtlphy) == RF_2T2R) &&
 375                      (regoffset == RTXAGC_A_MCS15_MCS12 ||
 376                       regoffset == RTXAGC_B_MCS15_MCS12)) ||
 377                     ((get_rf_type(rtlphy) != RF_2T2R) &&
 378                      (regoffset == RTXAGC_A_MCS07_MCS04 ||
 379                       regoffset == RTXAGC_B_MCS07_MCS04))) {
 380
 381                         writeVal = pwr_val[3];
 382                         if (regoffset == RTXAGC_A_MCS15_MCS12 ||
 383                             regoffset == RTXAGC_A_MCS07_MCS04)
 384                                 regoffset = 0xc90;
 385                         if (regoffset == RTXAGC_B_MCS15_MCS12 ||
 386                             regoffset == RTXAGC_B_MCS07_MCS04)
 387                                 regoffset = 0xc98;
 388
 389                         for (i = 0; i < 3; i++) {
 390                                 writeVal = (writeVal > 6) ? (writeVal - 6) : 0;
 391                                 rtl_write_byte(rtlpriv, (u32) (regoffset + i),
 392                                                (u8) writeVal);
 393                         }
 394                 }
 395         }
 396 }
 397
 398 void rtl92ce_phy_rf6052_set_ofdm_txpower(struct ieee80211_hw *hw,
 399                                         u8 *ppowerlevel, u8 channel)
 400 {
 401         u32 writeVal[2], powerBase0[2], powerBase1[2];
 402         u8 index;
 403
 404         rtl92c_phy_get_power_base(hw, ppowerlevel,
 405                                   channel, &powerBase0[0], &powerBase1[0]);
 406
 407         for (index = 0; index < 6; index++) {
 408                 _rtl92c_get_txpower_writeval_by_regulatory(hw,
 409                                                            channel, index,
 410                                                            &powerBase0[0],
 411                                                            &powerBase1[0],
 412                                                            &writeVal[0]);
 413
 414                 _rtl92c_write_ofdm_power_reg(hw, index, &writeVal[0]);
 415         }
 416 }
 417
 418 bool rtl92ce_phy_rf6052_config(struct ieee80211_hw *hw)
 419 {
 420         struct rtl_priv *rtlpriv = rtl_priv(hw);
 421         struct rtl_phy *rtlphy = &(rtlpriv->phy);
 422
 423         if (rtlphy->rf_type == RF_1T1R)
 424                 rtlphy->num_total_rfpath = 1;
 425         else
 426                 rtlphy->num_total_rfpath = 2;
 427
 428         return _rtl92ce_phy_rf6052_config_parafile(hw);
 429
 430 }
 431
 432 static bool _rtl92ce_phy_rf6052_config_parafile(struct ieee80211_hw *hw)
 433 {
 434         struct rtl_priv *rtlpriv = rtl_priv(hw);
 435         struct rtl_phy *rtlphy = &(rtlpriv->phy);
 436         u32 u4_regvalue = 0;
 437         u8 rfpath;
 438         bool rtstatus = true;
 439         struct bb_reg_def *pphyreg;
 440
 441         for (rfpath = 0; rfpath < rtlphy->num_total_rfpath; rfpath++) {
 442
 443                 pphyreg = &rtlphy->phyreg_def[rfpath];
 444
 445                 switch (rfpath) {
 446                 case RF90_PATH_A:
 447                 case RF90_PATH_C:
 448                         u4_regvalue = rtl_get_bbreg(hw, pphyreg->rfintfs,
 449                                                     BRFSI_RFENV);
 450                         break;
 451                 case RF90_PATH_B:
 452                 case RF90_PATH_D:
 453                         u4_regvalue = rtl_get_bbreg(hw, pphyreg->rfintfs,
 454                                                     BRFSI_RFENV << 16);
 455                         break;
 456                 }
 457
 458                 rtl_set_bbreg(hw, pphyreg->rfintfe, BRFSI_RFENV << 16, 0x1);
 459                 udelay(1);
 460
 461                 rtl_set_bbreg(hw, pphyreg->rfintfo, BRFSI_RFENV, 0x1);
 462                 udelay(1);
 463
 464                 rtl_set_bbreg(hw, pphyreg->rfhssi_para2,
 465                               B3WIREADDREAALENGTH, 0x0);
 466                 udelay(1);
 467
 468                 rtl_set_bbreg(hw, pphyreg->rfhssi_para2, B3WIREDATALENGTH, 0x0);
 469                 udelay(1);
 470
 471                 switch (rfpath) {
 472                 case RF90_PATH_A:
 473                         rtstatus = rtl92c_phy_config_rf_with_headerfile(hw,
 474                                                 (enum radio_path)rfpath);
 475                         break;
 476                 case RF90_PATH_B:
 477                         rtstatus = rtl92c_phy_config_rf_with_headerfile(hw,
 478                                                 (enum radio_path)rfpath);
 479                         break;
 480                 case RF90_PATH_C:
 481                         break;
 482                 case RF90_PATH_D:
 483                         break;
 484                 }
 485
 486                 switch (rfpath) {
 487                 case RF90_PATH_A:
 488                 case RF90_PATH_C:
 489                         rtl_set_bbreg(hw, pphyreg->rfintfs,
 490                                       BRFSI_RFENV, u4_regvalue);
 491                         break;
 492                 case RF90_PATH_B:
 493                 case RF90_PATH_D:
 494                         rtl_set_bbreg(hw, pphyreg->rfintfs,
 495                                       BRFSI_RFENV << 16, u4_regvalue);
 496                         break;
 497                 }
 498
 499                 if (!rtstatus) {
 500                         RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
 501                                  "Radio[%d] Fail!!\n", rfpath);
 502                         return false;
 503                 }
 504
 505         }
 506
 507         RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE, "<---\n");
 508         return rtstatus;
 509 }