linux/drivers/net/wireless/realtek/rtlwifi/rtl8192cu/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 * The full GNU General Public License is included in this distribution in the
  15 * file called LICENSE.
  16 *
  17 * Contact Information:
  18 * wlanfae <wlanfae@realtek.com>
  19 * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
  20 * Hsinchu 300, Taiwan.
  21 *
  22 * Larry Finger <Larry.Finger@lwfinger.net>
  23 *
  24 *****************************************************************************/
  25
  26#include "../wifi.h"
  27#include "reg.h"
  28#include "def.h"
  29#include "phy.h"
  30#include "rf.h"
  31#include "dm.h"
  32
  33static bool _rtl92c_phy_rf6052_config_parafile(struct ieee80211_hw *hw);
  34
  35void rtl92cu_phy_rf6052_set_bandwidth(struct ieee80211_hw *hw, u8 bandwidth)
  36{
  37        struct rtl_priv *rtlpriv = rtl_priv(hw);
  38        struct rtl_phy *rtlphy = &(rtlpriv->phy);
  39
  40        switch (bandwidth) {
  41        case HT_CHANNEL_WIDTH_20:
  42                rtlphy->rfreg_chnlval[0] = ((rtlphy->rfreg_chnlval[0] &
  43                                             0xfffff3ff) | 0x0400);
  44                rtl_set_rfreg(hw, RF90_PATH_A, RF_CHNLBW, RFREG_OFFSET_MASK,
  45                              rtlphy->rfreg_chnlval[0]);
  46                break;
  47        case HT_CHANNEL_WIDTH_20_40:
  48                rtlphy->rfreg_chnlval[0] = ((rtlphy->rfreg_chnlval[0] &
  49                                             0xfffff3ff));
  50                rtl_set_rfreg(hw, RF90_PATH_A, RF_CHNLBW, RFREG_OFFSET_MASK,
  51                              rtlphy->rfreg_chnlval[0]);
  52                break;
  53        default:
  54                pr_err("unknown bandwidth: %#X\n", bandwidth);
  55                break;
  56        }
  57}
  58
  59void rtl92cu_phy_rf6052_set_cck_txpower(struct ieee80211_hw *hw,
  60                                        u8 *ppowerlevel)
  61{
  62        struct rtl_priv *rtlpriv = rtl_priv(hw);
  63        struct rtl_phy *rtlphy = &(rtlpriv->phy);
  64        struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
  65        struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
  66        u32 tx_agc[2] = { 0, 0 }, tmpval = 0;
  67        bool turbo_scanoff = false;
  68        u8 idx1, idx2;
  69        u8 *ptr;
  70
  71        if ((rtlefuse->eeprom_regulatory != 0) || (rtlefuse->external_pa))
  72                turbo_scanoff = true;
  73        if (mac->act_scanning) {
  74                tx_agc[RF90_PATH_A] = 0x3f3f3f3f;
  75                tx_agc[RF90_PATH_B] = 0x3f3f3f3f;
  76                for (idx1 = RF90_PATH_A; idx1 <= RF90_PATH_B; idx1++) {
  77                        tx_agc[idx1] = ppowerlevel[idx1] |
  78                            (ppowerlevel[idx1] << 8) |
  79                            (ppowerlevel[idx1] << 16) |
  80                            (ppowerlevel[idx1] << 24);
  81                        if (tx_agc[idx1] > 0x20 && rtlefuse->external_pa)
  82                                tx_agc[idx1] = 0x20;
  83                }
  84        } else {
  85                if (rtlpriv->dm.dynamic_txhighpower_lvl ==
  86                    TXHIGHPWRLEVEL_LEVEL1) {
  87                        tx_agc[RF90_PATH_A] = 0x10101010;
  88                        tx_agc[RF90_PATH_B] = 0x10101010;
  89                } else if (rtlpriv->dm.dynamic_txhighpower_lvl ==
  90                           TXHIGHPWRLEVEL_LEVEL2) {
  91                        tx_agc[RF90_PATH_A] = 0x00000000;
  92                        tx_agc[RF90_PATH_B] = 0x00000000;
  93                } else {
  94                        for (idx1 = RF90_PATH_A; idx1 <= RF90_PATH_B; idx1++) {
  95                                tx_agc[idx1] = ppowerlevel[idx1] |
  96                                    (ppowerlevel[idx1] << 8) |
  97                                    (ppowerlevel[idx1] << 16) |
  98                                    (ppowerlevel[idx1] << 24);
  99                        }
 100                        if (rtlefuse->eeprom_regulatory == 0) {
 101                                tmpval = (rtlphy->mcs_offset[0][6]) +
 102                                        (rtlphy->mcs_offset[0][7] <<  8);
 103                                tx_agc[RF90_PATH_A] += tmpval;
 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        tmpval = tx_agc[RF90_PATH_A] & 0xff;
 119        rtl_set_bbreg(hw, RTXAGC_A_CCK1_MCS32, MASKBYTE1, tmpval);
 120
 121        RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 122                "CCK PWR 1M (rf-A) = 0x%x (reg 0x%x)\n",
 123                tmpval, RTXAGC_A_CCK1_MCS32);
 124
 125        tmpval = tx_agc[RF90_PATH_A] >> 8;
 126        if (mac->mode == WIRELESS_MODE_B)
 127                tmpval = tmpval & 0xff00ffff;
 128        rtl_set_bbreg(hw, RTXAGC_B_CCK11_A_CCK2_11, 0xffffff00, tmpval);
 129        RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 130                "CCK PWR 2~11M (rf-A) = 0x%x (reg 0x%x)\n",
 131                tmpval, RTXAGC_B_CCK11_A_CCK2_11);
 132        tmpval = tx_agc[RF90_PATH_B] >> 24;
 133        rtl_set_bbreg(hw, RTXAGC_B_CCK11_A_CCK2_11, MASKBYTE0, tmpval);
 134        RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 135                "CCK PWR 11M (rf-B) = 0x%x (reg 0x%x)\n",
 136                tmpval, RTXAGC_B_CCK11_A_CCK2_11);
 137        tmpval = tx_agc[RF90_PATH_B] & 0x00ffffff;
 138        rtl_set_bbreg(hw, RTXAGC_B_CCK1_55_MCS32, 0xffffff00, tmpval);
 139        RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 140                "CCK PWR 1~5.5M (rf-B) = 0x%x (reg 0x%x)\n",
 141                tmpval, RTXAGC_B_CCK1_55_MCS32);
 142}
 143
 144static void rtl92c_phy_get_power_base(struct ieee80211_hw *hw,
 145                                      u8 *ppowerlevel, u8 channel,
 146                                      u32 *ofdmbase, u32 *mcsbase)
 147{
 148        struct rtl_priv *rtlpriv = rtl_priv(hw);
 149        struct rtl_phy *rtlphy = &(rtlpriv->phy);
 150        struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
 151        u32 powerBase0, powerBase1;
 152        u8 legacy_pwrdiff = 0, ht20_pwrdiff = 0;
 153        u8 i, powerlevel[2];
 154
 155        for (i = 0; i < 2; i++) {
 156                powerlevel[i] = ppowerlevel[i];
 157                legacy_pwrdiff = rtlefuse->txpwr_legacyhtdiff[i][channel - 1];
 158                powerBase0 = powerlevel[i] + legacy_pwrdiff;
 159                powerBase0 = (powerBase0 << 24) | (powerBase0 << 16) |
 160                    (powerBase0 << 8) | powerBase0;
 161                *(ofdmbase + i) = powerBase0;
 162                RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 163                        " [OFDM power base index rf(%c) = 0x%x]\n",
 164                        i == 0 ? 'A' : 'B', *(ofdmbase + i));
 165        }
 166        for (i = 0; i < 2; i++) {
 167                if (rtlphy->current_chan_bw == HT_CHANNEL_WIDTH_20) {
 168                        ht20_pwrdiff = rtlefuse->txpwr_ht20diff[i][channel - 1];
 169                        powerlevel[i] += ht20_pwrdiff;
 170                }
 171                powerBase1 = powerlevel[i];
 172                powerBase1 = (powerBase1 << 24) |
 173                    (powerBase1 << 16) | (powerBase1 << 8) | powerBase1;
 174                *(mcsbase + i) = powerBase1;
 175                RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 176                        " [MCS power base index rf(%c) = 0x%x]\n",
 177                        i == 0 ? 'A' : 'B', *(mcsbase + i));
 178        }
 179}
 180
 181static void _rtl92c_get_txpower_writeval_by_regulatory(struct ieee80211_hw *hw,
 182                                                       u8 channel, u8 index,
 183                                                       u32 *powerBase0,
 184                                                       u32 *powerBase1,
 185                                                       u32 *p_outwriteval)
 186{
 187        struct rtl_priv *rtlpriv = rtl_priv(hw);
 188        struct rtl_phy *rtlphy = &(rtlpriv->phy);
 189        struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
 190        u8 i, chnlgroup = 0, pwr_diff_limit[4];
 191        u32 writeVal, customer_limit, rf;
 192
 193        for (rf = 0; rf < 2; rf++) {
 194                switch (rtlefuse->eeprom_regulatory) {
 195                case 0:
 196                        chnlgroup = 0;
 197                        writeVal = rtlphy->mcs_offset
 198                            [chnlgroup][index + (rf ? 8 : 0)]
 199                            + ((index < 2) ? powerBase0[rf] : powerBase1[rf]);
 200                        RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 201                                "RTK better performance,writeVal(%c) = 0x%x\n",
 202                                rf == 0 ? 'A' : 'B', writeVal);
 203                        break;
 204                case 1:
 205                        if (rtlphy->pwrgroup_cnt == 1)
 206                                chnlgroup = 0;
 207                        if (rtlphy->pwrgroup_cnt >= 3) {
 208                                if (channel <= 3)
 209                                        chnlgroup = 0;
 210                                else if (channel >= 4 && channel <= 9)
 211                                        chnlgroup = 1;
 212                                else if (channel > 9)
 213                                        chnlgroup = 2;
 214                                if (rtlphy->current_chan_bw ==
 215                                    HT_CHANNEL_WIDTH_20)
 216                                        chnlgroup++;
 217                                else
 218                                        chnlgroup += 4;
 219                        }
 220                        writeVal = rtlphy->mcs_offset[chnlgroup][index +
 221                                        (rf ? 8 : 0)] +
 222                                        ((index < 2) ? powerBase0[rf] :
 223                                        powerBase1[rf]);
 224                        RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 225                                "Realtek regulatory, 20MHz, writeVal(%c) = 0x%x\n",
 226                                rf == 0 ? 'A' : 'B', writeVal);
 227                        break;
 228                case 2:
 229                        writeVal = ((index < 2) ? powerBase0[rf] :
 230                                   powerBase1[rf]);
 231                        RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 232                                "Better regulatory,writeVal(%c) = 0x%x\n",
 233                                rf == 0 ? 'A' : 'B', writeVal);
 234                        break;
 235                case 3:
 236                        chnlgroup = 0;
 237                        if (rtlphy->current_chan_bw ==
 238                            HT_CHANNEL_WIDTH_20_40) {
 239                                RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 240                                        "customer's limit, 40MHzrf(%c) = 0x%x\n",
 241                                        rf == 0 ? 'A' : 'B',
 242                                        rtlefuse->pwrgroup_ht40[rf]
 243                                        [channel - 1]);
 244                        } else {
 245                                RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 246                                        "customer's limit, 20MHz rf(%c) = 0x%x\n",
 247                                        rf == 0 ? 'A' : 'B',
 248                                        rtlefuse->pwrgroup_ht20[rf]
 249                                        [channel - 1]);
 250                        }
 251                        for (i = 0; i < 4; i++) {
 252                                pwr_diff_limit[i] = (u8) ((rtlphy->mcs_offset
 253                                    [chnlgroup][index + (rf ? 8 : 0)]
 254                                    & (0x7f << (i * 8))) >> (i * 8));
 255                                if (rtlphy->current_chan_bw ==
 256                                    HT_CHANNEL_WIDTH_20_40) {
 257                                        if (pwr_diff_limit[i] >
 258                                            rtlefuse->pwrgroup_ht40[rf]
 259                                                [channel - 1])
 260                                                pwr_diff_limit[i] = rtlefuse->
 261                                                    pwrgroup_ht40[rf]
 262                                                    [channel - 1];
 263                                } else {
 264                                        if (pwr_diff_limit[i] >
 265                                            rtlefuse->pwrgroup_ht20[rf]
 266                                                [channel - 1])
 267                                                pwr_diff_limit[i] =
 268                                                    rtlefuse->pwrgroup_ht20[rf]
 269                                                    [channel - 1];
 270                                }
 271                        }
 272                        customer_limit = (pwr_diff_limit[3] << 24) |
 273                            (pwr_diff_limit[2] << 16) |
 274                            (pwr_diff_limit[1] << 8) | (pwr_diff_limit[0]);
 275                        RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 276                                "Customer's limit rf(%c) = 0x%x\n",
 277                                rf == 0 ? 'A' : 'B', customer_limit);
 278                        writeVal = customer_limit + ((index < 2) ?
 279                                   powerBase0[rf] : powerBase1[rf]);
 280                        RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 281                                "Customer, writeVal rf(%c)= 0x%x\n",
 282                                rf == 0 ? 'A' : 'B', writeVal);
 283                        break;
 284                default:
 285                        chnlgroup = 0;
 286                        writeVal = rtlphy->mcs_offset[chnlgroup]
 287                                   [index + (rf ? 8 : 0)] + ((index < 2) ?
 288                                   powerBase0[rf] : powerBase1[rf]);
 289                        RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 290                                "RTK better performance, writeValrf(%c) = 0x%x\n",
 291                                rf == 0 ? 'A' : 'B', writeVal);
 292                        break;
 293                }
 294                if (rtlpriv->dm.dynamic_txhighpower_lvl ==
 295                    TXHIGHPWRLEVEL_LEVEL1)
 296                        writeVal = 0x14141414;
 297                else if (rtlpriv->dm.dynamic_txhighpower_lvl ==
 298                         TXHIGHPWRLEVEL_LEVEL2)
 299                        writeVal = 0x00000000;
 300                if (rtlpriv->dm.dynamic_txhighpower_lvl == TXHIGHPWRLEVEL_BT1)
 301                        writeVal = writeVal - 0x06060606;
 302                *(p_outwriteval + rf) = writeVal;
 303        }
 304}
 305
 306static void _rtl92c_write_ofdm_power_reg(struct ieee80211_hw *hw,
 307                                         u8 index, u32 *pValue)
 308{
 309        struct rtl_priv *rtlpriv = rtl_priv(hw);
 310        struct rtl_phy *rtlphy = &(rtlpriv->phy);
 311        u16 regoffset_a[6] = {
 312                RTXAGC_A_RATE18_06, RTXAGC_A_RATE54_24,
 313                RTXAGC_A_MCS03_MCS00, RTXAGC_A_MCS07_MCS04,
 314                RTXAGC_A_MCS11_MCS08, RTXAGC_A_MCS15_MCS12
 315        };
 316        u16 regoffset_b[6] = {
 317                RTXAGC_B_RATE18_06, RTXAGC_B_RATE54_24,
 318                RTXAGC_B_MCS03_MCS00, RTXAGC_B_MCS07_MCS04,
 319                RTXAGC_B_MCS11_MCS08, RTXAGC_B_MCS15_MCS12
 320        };
 321        u8 i, rf, pwr_val[4];
 322        u32 writeVal;
 323        u16 regoffset;
 324
 325        for (rf = 0; rf < 2; rf++) {
 326                writeVal = pValue[rf];
 327                for (i = 0; i < 4; i++) {
 328                        pwr_val[i] = (u8)((writeVal & (0x7f << (i * 8))) >>
 329                                          (i * 8));
 330                        if (pwr_val[i] > RF6052_MAX_TX_PWR)
 331                                pwr_val[i] = RF6052_MAX_TX_PWR;
 332                }
 333                writeVal = (pwr_val[3] << 24) | (pwr_val[2] << 16) |
 334                    (pwr_val[1] << 8) | pwr_val[0];
 335                if (rf == 0)
 336                        regoffset = regoffset_a[index];
 337                else
 338                        regoffset = regoffset_b[index];
 339                rtl_set_bbreg(hw, regoffset, MASKDWORD, writeVal);
 340                RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
 341                        "Set 0x%x = %08x\n", regoffset, writeVal);
 342                if (((get_rf_type(rtlphy) == RF_2T2R) &&
 343                     (regoffset == RTXAGC_A_MCS15_MCS12 ||
 344                      regoffset == RTXAGC_B_MCS15_MCS12)) ||
 345                    ((get_rf_type(rtlphy) != RF_2T2R) &&
 346                     (regoffset == RTXAGC_A_MCS07_MCS04 ||
 347                      regoffset == RTXAGC_B_MCS07_MCS04))) {
 348                        writeVal = pwr_val[3];
 349                        if (regoffset == RTXAGC_A_MCS15_MCS12 ||
 350                            regoffset == RTXAGC_A_MCS07_MCS04)
 351                                regoffset = 0xc90;
 352                        if (regoffset == RTXAGC_B_MCS15_MCS12 ||
 353                            regoffset == RTXAGC_B_MCS07_MCS04)
 354                                regoffset = 0xc98;
 355                        for (i = 0; i < 3; i++) {
 356                                if (i != 2)
 357                                        writeVal = (writeVal > 8) ?
 358                                                   (writeVal - 8) : 0;
 359                                else
 360                                        writeVal = (writeVal > 6) ?
 361                                                   (writeVal - 6) : 0;
 362                                rtl_write_byte(rtlpriv, (u32)(regoffset + i),
 363                                              (u8)writeVal);
 364                        }
 365                }
 366        }
 367}
 368
 369void rtl92cu_phy_rf6052_set_ofdm_txpower(struct ieee80211_hw *hw,
 370                                         u8 *ppowerlevel, u8 channel)
 371{
 372        u32 writeVal[2], powerBase0[2], powerBase1[2];
 373        u8 index = 0;
 374
 375        rtl92c_phy_get_power_base(hw, ppowerlevel,
 376                                  channel, &powerBase0[0], &powerBase1[0]);
 377        for (index = 0; index < 6; index++) {
 378                _rtl92c_get_txpower_writeval_by_regulatory(hw,
 379                                                           channel, index,
 380                                                           &powerBase0[0],
 381                                                           &powerBase1[0],
 382                                                           &writeVal[0]);
 383                _rtl92c_write_ofdm_power_reg(hw, index, &writeVal[0]);
 384        }
 385}
 386
 387bool rtl92cu_phy_rf6052_config(struct ieee80211_hw *hw)
 388{
 389        struct rtl_priv *rtlpriv = rtl_priv(hw);
 390        struct rtl_phy *rtlphy = &(rtlpriv->phy);
 391        bool rtstatus = true;
 392        u8 b_reg_hwparafile = 1;
 393
 394        if (rtlphy->rf_type == RF_1T1R)
 395                rtlphy->num_total_rfpath = 1;
 396        else
 397                rtlphy->num_total_rfpath = 2;
 398        if (b_reg_hwparafile == 1)
 399                rtstatus = _rtl92c_phy_rf6052_config_parafile(hw);
 400        return rtstatus;
 401}
 402
 403static bool _rtl92c_phy_rf6052_config_parafile(struct ieee80211_hw *hw)
 404{
 405        struct rtl_priv *rtlpriv = rtl_priv(hw);
 406        struct rtl_phy *rtlphy = &(rtlpriv->phy);
 407        u32 u4_regvalue = 0;
 408        u8 rfpath;
 409        bool rtstatus = true;
 410        struct bb_reg_def *pphyreg;
 411
 412        for (rfpath = 0; rfpath < rtlphy->num_total_rfpath; rfpath++) {
 413                pphyreg = &rtlphy->phyreg_def[rfpath];
 414                switch (rfpath) {
 415                case RF90_PATH_A:
 416                case RF90_PATH_C:
 417                        u4_regvalue = rtl_get_bbreg(hw, pphyreg->rfintfs,
 418                                                    BRFSI_RFENV);
 419                        break;
 420                case RF90_PATH_B:
 421                case RF90_PATH_D:
 422                        u4_regvalue = rtl_get_bbreg(hw, pphyreg->rfintfs,
 423                                                    BRFSI_RFENV << 16);
 424                        break;
 425                }
 426                rtl_set_bbreg(hw, pphyreg->rfintfe, BRFSI_RFENV << 16, 0x1);
 427                udelay(1);
 428                rtl_set_bbreg(hw, pphyreg->rfintfo, BRFSI_RFENV, 0x1);
 429                udelay(1);
 430                rtl_set_bbreg(hw, pphyreg->rfhssi_para2,
 431                              B3WIREADDREAALENGTH, 0x0);
 432                udelay(1);
 433                rtl_set_bbreg(hw, pphyreg->rfhssi_para2, B3WIREDATALENGTH, 0x0);
 434                udelay(1);
 435                switch (rfpath) {
 436                case RF90_PATH_A:
 437                case RF90_PATH_B:
 438                        rtstatus = rtl92cu_phy_config_rf_with_headerfile(hw,
 439                                        (enum radio_path) rfpath);
 440                        break;
 441                case RF90_PATH_C:
 442                        break;
 443                case RF90_PATH_D:
 444                        break;
 445                }
 446                switch (rfpath) {
 447                case RF90_PATH_A:
 448                case RF90_PATH_C:
 449                        rtl_set_bbreg(hw, pphyreg->rfintfs,
 450                                      BRFSI_RFENV, u4_regvalue);
 451                        break;
 452                case RF90_PATH_B:
 453                case RF90_PATH_D:
 454                        rtl_set_bbreg(hw, pphyreg->rfintfs,
 455                                      BRFSI_RFENV << 16, u4_regvalue);
 456                        break;
 457                }
 458                if (!rtstatus) {
 459                        RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
 460                                 "Radio[%d] Fail!!\n", rfpath);
 461                        goto phy_rf_cfg_fail;
 462                }
 463        }
 464        RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE, "<---\n");
 465phy_rf_cfg_fail:
 466        return rtstatus;
 467}
 468