linux/drivers/net/wireless/rtlwifi/rtl8192ce/rf.c
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   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
  37static bool _rtl92ce_phy_rf6052_config_parafile(struct ieee80211_hw *hw);
  38
  39void 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
  64void 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
 151static 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
 192static 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
 333static 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
 398void 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
 418bool 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
 432static 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}
 510