linux/drivers/net/wireless/rtlwifi/rtl8723com/phy_common.c
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   1/******************************************************************************
   2 *
   3 * Copyright(c) 2009-2014  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 "phy_common.h"
  28#include "../rtl8723ae/reg.h"
  29#include <linux/module.h>
  30
  31/* These routines are common to RTL8723AE and RTL8723bE */
  32
  33u32 rtl8723_phy_query_bb_reg(struct ieee80211_hw *hw,
  34                             u32 regaddr, u32 bitmask)
  35{
  36        struct rtl_priv *rtlpriv = rtl_priv(hw);
  37        u32 returnvalue, originalvalue, bitshift;
  38
  39        RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE,
  40                 "regaddr(%#x), bitmask(%#x)\n", regaddr, bitmask);
  41        originalvalue = rtl_read_dword(rtlpriv, regaddr);
  42        bitshift = rtl8723_phy_calculate_bit_shift(bitmask);
  43        returnvalue = (originalvalue & bitmask) >> bitshift;
  44
  45        RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE,
  46                 "BBR MASK = 0x%x Addr[0x%x]= 0x%x\n",
  47                  bitmask, regaddr, originalvalue);
  48
  49        return returnvalue;
  50}
  51EXPORT_SYMBOL_GPL(rtl8723_phy_query_bb_reg);
  52
  53void rtl8723_phy_set_bb_reg(struct ieee80211_hw *hw, u32 regaddr,
  54                              u32 bitmask, u32 data)
  55{
  56        struct rtl_priv *rtlpriv = rtl_priv(hw);
  57        u32 originalvalue, bitshift;
  58
  59        RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE,
  60                 "regaddr(%#x), bitmask(%#x), data(%#x)\n",
  61                  regaddr, bitmask, data);
  62
  63        if (bitmask != MASKDWORD) {
  64                originalvalue = rtl_read_dword(rtlpriv, regaddr);
  65                bitshift = rtl8723_phy_calculate_bit_shift(bitmask);
  66                data = ((originalvalue & (~bitmask)) | (data << bitshift));
  67        }
  68
  69        rtl_write_dword(rtlpriv, regaddr, data);
  70
  71        RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE,
  72                 "regaddr(%#x), bitmask(%#x), data(%#x)\n",
  73                  regaddr, bitmask, data);
  74}
  75EXPORT_SYMBOL_GPL(rtl8723_phy_set_bb_reg);
  76
  77u32 rtl8723_phy_calculate_bit_shift(u32 bitmask)
  78{
  79        u32 i;
  80
  81        for (i = 0; i <= 31; i++) {
  82                if (((bitmask >> i) & 0x1) == 1)
  83                        break;
  84        }
  85        return i;
  86}
  87EXPORT_SYMBOL_GPL(rtl8723_phy_calculate_bit_shift);
  88
  89u32 rtl8723_phy_rf_serial_read(struct ieee80211_hw *hw,
  90                               enum radio_path rfpath, u32 offset)
  91{
  92        struct rtl_priv *rtlpriv = rtl_priv(hw);
  93        struct rtl_phy *rtlphy = &(rtlpriv->phy);
  94        struct bb_reg_def *pphyreg = &rtlphy->phyreg_def[rfpath];
  95        u32 newoffset;
  96        u32 tmplong, tmplong2;
  97        u8 rfpi_enable = 0;
  98        u32 retvalue;
  99
 100        offset &= 0xff;
 101        newoffset = offset;
 102        if (RT_CANNOT_IO(hw)) {
 103                RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "return all one\n");
 104                return 0xFFFFFFFF;
 105        }
 106        tmplong = rtl_get_bbreg(hw, RFPGA0_XA_HSSIPARAMETER2, MASKDWORD);
 107        if (rfpath == RF90_PATH_A)
 108                tmplong2 = tmplong;
 109        else
 110                tmplong2 = rtl_get_bbreg(hw, pphyreg->rfhssi_para2, MASKDWORD);
 111        tmplong2 = (tmplong2 & (~BLSSIREADADDRESS)) |
 112                   (newoffset << 23) | BLSSIREADEDGE;
 113        rtl_set_bbreg(hw, RFPGA0_XA_HSSIPARAMETER2, MASKDWORD,
 114                      tmplong & (~BLSSIREADEDGE));
 115        mdelay(1);
 116        rtl_set_bbreg(hw, pphyreg->rfhssi_para2, MASKDWORD, tmplong2);
 117        mdelay(2);
 118        if (rfpath == RF90_PATH_A)
 119                rfpi_enable = (u8) rtl_get_bbreg(hw, RFPGA0_XA_HSSIPARAMETER1,
 120                                                 BIT(8));
 121        else if (rfpath == RF90_PATH_B)
 122                rfpi_enable = (u8) rtl_get_bbreg(hw, RFPGA0_XB_HSSIPARAMETER1,
 123                                                 BIT(8));
 124        if (rfpi_enable)
 125                retvalue = rtl_get_bbreg(hw, pphyreg->rf_rbpi,
 126                                         BLSSIREADBACKDATA);
 127        else
 128                retvalue = rtl_get_bbreg(hw, pphyreg->rf_rb,
 129                                         BLSSIREADBACKDATA);
 130        RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE,
 131                 "RFR-%d Addr[0x%x]= 0x%x\n",
 132                  rfpath, pphyreg->rf_rb, retvalue);
 133        return retvalue;
 134}
 135EXPORT_SYMBOL_GPL(rtl8723_phy_rf_serial_read);
 136
 137void rtl8723_phy_rf_serial_write(struct ieee80211_hw *hw,
 138                                 enum radio_path rfpath,
 139                                 u32 offset, u32 data)
 140{
 141        u32 data_and_addr;
 142        u32 newoffset;
 143        struct rtl_priv *rtlpriv = rtl_priv(hw);
 144        struct rtl_phy *rtlphy = &(rtlpriv->phy);
 145        struct bb_reg_def *pphyreg = &rtlphy->phyreg_def[rfpath];
 146
 147        if (RT_CANNOT_IO(hw)) {
 148                RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "stop\n");
 149                return;
 150        }
 151        offset &= 0xff;
 152        newoffset = offset;
 153        data_and_addr = ((newoffset << 20) | (data & 0x000fffff)) & 0x0fffffff;
 154        rtl_set_bbreg(hw, pphyreg->rf3wire_offset, MASKDWORD, data_and_addr);
 155        RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE,
 156                 "RFW-%d Addr[0x%x]= 0x%x\n", rfpath,
 157                   pphyreg->rf3wire_offset, data_and_addr);
 158}
 159EXPORT_SYMBOL_GPL(rtl8723_phy_rf_serial_write);
 160
 161long rtl8723_phy_txpwr_idx_to_dbm(struct ieee80211_hw *hw,
 162                                  enum wireless_mode wirelessmode,
 163                                  u8 txpwridx)
 164{
 165        long offset;
 166        long pwrout_dbm;
 167
 168        switch (wirelessmode) {
 169        case WIRELESS_MODE_B:
 170                offset = -7;
 171                break;
 172        case WIRELESS_MODE_G:
 173        case WIRELESS_MODE_N_24G:
 174        default:
 175                offset = -8;
 176                break;
 177        }
 178        pwrout_dbm = txpwridx / 2 + offset;
 179        return pwrout_dbm;
 180}
 181EXPORT_SYMBOL_GPL(rtl8723_phy_txpwr_idx_to_dbm);
 182
 183void rtl8723_phy_init_bb_rf_reg_def(struct ieee80211_hw *hw)
 184{
 185        struct rtl_priv *rtlpriv = rtl_priv(hw);
 186        struct rtl_phy *rtlphy = &(rtlpriv->phy);
 187
 188        rtlphy->phyreg_def[RF90_PATH_A].rfintfs = RFPGA0_XAB_RFINTERFACESW;
 189        rtlphy->phyreg_def[RF90_PATH_B].rfintfs = RFPGA0_XAB_RFINTERFACESW;
 190        rtlphy->phyreg_def[RF90_PATH_C].rfintfs = RFPGA0_XCD_RFINTERFACESW;
 191        rtlphy->phyreg_def[RF90_PATH_D].rfintfs = RFPGA0_XCD_RFINTERFACESW;
 192
 193        rtlphy->phyreg_def[RF90_PATH_A].rfintfi = RFPGA0_XAB_RFINTERFACERB;
 194        rtlphy->phyreg_def[RF90_PATH_B].rfintfi = RFPGA0_XAB_RFINTERFACERB;
 195        rtlphy->phyreg_def[RF90_PATH_C].rfintfi = RFPGA0_XCD_RFINTERFACERB;
 196        rtlphy->phyreg_def[RF90_PATH_D].rfintfi = RFPGA0_XCD_RFINTERFACERB;
 197
 198        rtlphy->phyreg_def[RF90_PATH_A].rfintfo = RFPGA0_XA_RFINTERFACEOE;
 199        rtlphy->phyreg_def[RF90_PATH_B].rfintfo = RFPGA0_XB_RFINTERFACEOE;
 200
 201        rtlphy->phyreg_def[RF90_PATH_A].rfintfe = RFPGA0_XA_RFINTERFACEOE;
 202        rtlphy->phyreg_def[RF90_PATH_B].rfintfe = RFPGA0_XB_RFINTERFACEOE;
 203
 204        rtlphy->phyreg_def[RF90_PATH_A].rf3wire_offset =
 205                            RFPGA0_XA_LSSIPARAMETER;
 206        rtlphy->phyreg_def[RF90_PATH_B].rf3wire_offset =
 207                            RFPGA0_XB_LSSIPARAMETER;
 208
 209        rtlphy->phyreg_def[RF90_PATH_A].rflssi_select = rFPGA0_XAB_RFPARAMETER;
 210        rtlphy->phyreg_def[RF90_PATH_B].rflssi_select = rFPGA0_XAB_RFPARAMETER;
 211        rtlphy->phyreg_def[RF90_PATH_C].rflssi_select = rFPGA0_XCD_RFPARAMETER;
 212        rtlphy->phyreg_def[RF90_PATH_D].rflssi_select = rFPGA0_XCD_RFPARAMETER;
 213
 214        rtlphy->phyreg_def[RF90_PATH_A].rftxgain_stage = RFPGA0_TXGAINSTAGE;
 215        rtlphy->phyreg_def[RF90_PATH_B].rftxgain_stage = RFPGA0_TXGAINSTAGE;
 216        rtlphy->phyreg_def[RF90_PATH_C].rftxgain_stage = RFPGA0_TXGAINSTAGE;
 217        rtlphy->phyreg_def[RF90_PATH_D].rftxgain_stage = RFPGA0_TXGAINSTAGE;
 218
 219        rtlphy->phyreg_def[RF90_PATH_A].rfhssi_para1 = RFPGA0_XA_HSSIPARAMETER1;
 220        rtlphy->phyreg_def[RF90_PATH_B].rfhssi_para1 = RFPGA0_XB_HSSIPARAMETER1;
 221
 222        rtlphy->phyreg_def[RF90_PATH_A].rfhssi_para2 = RFPGA0_XA_HSSIPARAMETER2;
 223        rtlphy->phyreg_def[RF90_PATH_B].rfhssi_para2 = RFPGA0_XB_HSSIPARAMETER2;
 224
 225        rtlphy->phyreg_def[RF90_PATH_A].rfsw_ctrl = RFPGA0_XAB_SWITCHCONTROL;
 226        rtlphy->phyreg_def[RF90_PATH_B].rfsw_ctrl = RFPGA0_XAB_SWITCHCONTROL;
 227        rtlphy->phyreg_def[RF90_PATH_C].rfsw_ctrl = RFPGA0_XCD_SWITCHCONTROL;
 228        rtlphy->phyreg_def[RF90_PATH_D].rfsw_ctrl = RFPGA0_XCD_SWITCHCONTROL;
 229
 230        rtlphy->phyreg_def[RF90_PATH_A].rfagc_control1 = ROFDM0_XAAGCCORE1;
 231        rtlphy->phyreg_def[RF90_PATH_B].rfagc_control1 = ROFDM0_XBAGCCORE1;
 232        rtlphy->phyreg_def[RF90_PATH_C].rfagc_control1 = ROFDM0_XCAGCCORE1;
 233        rtlphy->phyreg_def[RF90_PATH_D].rfagc_control1 = ROFDM0_XDAGCCORE1;
 234
 235        rtlphy->phyreg_def[RF90_PATH_A].rfagc_control2 = ROFDM0_XAAGCCORE2;
 236        rtlphy->phyreg_def[RF90_PATH_B].rfagc_control2 = ROFDM0_XBAGCCORE2;
 237        rtlphy->phyreg_def[RF90_PATH_C].rfagc_control2 = ROFDM0_XCAGCCORE2;
 238        rtlphy->phyreg_def[RF90_PATH_D].rfagc_control2 = ROFDM0_XDAGCCORE2;
 239
 240        rtlphy->phyreg_def[RF90_PATH_A].rfrxiq_imbal = ROFDM0_XARXIQIMBALANCE;
 241        rtlphy->phyreg_def[RF90_PATH_B].rfrxiq_imbal = ROFDM0_XBRXIQIMBALANCE;
 242        rtlphy->phyreg_def[RF90_PATH_C].rfrxiq_imbal = ROFDM0_XCRXIQIMBANLANCE;
 243        rtlphy->phyreg_def[RF90_PATH_D].rfrxiq_imbal = ROFDM0_XDRXIQIMBALANCE;
 244
 245        rtlphy->phyreg_def[RF90_PATH_A].rfrx_afe = ROFDM0_XARXAFE;
 246        rtlphy->phyreg_def[RF90_PATH_B].rfrx_afe = ROFDM0_XBRXAFE;
 247        rtlphy->phyreg_def[RF90_PATH_C].rfrx_afe = ROFDM0_XCRXAFE;
 248        rtlphy->phyreg_def[RF90_PATH_D].rfrx_afe = ROFDM0_XDRXAFE;
 249
 250        rtlphy->phyreg_def[RF90_PATH_A].rftxiq_imbal = ROFDM0_XATXIQIMBALANCE;
 251        rtlphy->phyreg_def[RF90_PATH_B].rftxiq_imbal = ROFDM0_XBTXIQIMBALANCE;
 252        rtlphy->phyreg_def[RF90_PATH_C].rftxiq_imbal = ROFDM0_XCTXIQIMBALANCE;
 253        rtlphy->phyreg_def[RF90_PATH_D].rftxiq_imbal = ROFDM0_XDTXIQIMBALANCE;
 254
 255        rtlphy->phyreg_def[RF90_PATH_A].rftx_afe = ROFDM0_XATXAFE;
 256        rtlphy->phyreg_def[RF90_PATH_B].rftx_afe = ROFDM0_XBTXAFE;
 257        rtlphy->phyreg_def[RF90_PATH_C].rftx_afe = ROFDM0_XCTXAFE;
 258        rtlphy->phyreg_def[RF90_PATH_D].rftx_afe = ROFDM0_XDTXAFE;
 259
 260        rtlphy->phyreg_def[RF90_PATH_A].rf_rb = RFPGA0_XA_LSSIREADBACK;
 261        rtlphy->phyreg_def[RF90_PATH_B].rf_rb = RFPGA0_XB_LSSIREADBACK;
 262        rtlphy->phyreg_def[RF90_PATH_C].rf_rb = RFPGA0_XC_LSSIREADBACK;
 263        rtlphy->phyreg_def[RF90_PATH_D].rf_rb = RFPGA0_XD_LSSIREADBACK;
 264
 265        rtlphy->phyreg_def[RF90_PATH_A].rf_rbpi = TRANSCEIVEA_HSPI_READBACK;
 266        rtlphy->phyreg_def[RF90_PATH_B].rf_rbpi = TRANSCEIVEB_HSPI_READBACK;
 267}
 268EXPORT_SYMBOL_GPL(rtl8723_phy_init_bb_rf_reg_def);
 269
 270bool rtl8723_phy_set_sw_chnl_cmdarray(struct swchnlcmd *cmdtable,
 271                                      u32 cmdtableidx,
 272                                      u32 cmdtablesz,
 273                                      enum swchnlcmd_id cmdid,
 274                                      u32 para1, u32 para2,
 275                                      u32 msdelay)
 276{
 277        struct swchnlcmd *pcmd;
 278
 279        if (cmdtable == NULL) {
 280                RT_ASSERT(false, "cmdtable cannot be NULL.\n");
 281                return false;
 282        }
 283
 284        if (cmdtableidx >= cmdtablesz)
 285                return false;
 286
 287        pcmd = cmdtable + cmdtableidx;
 288        pcmd->cmdid = cmdid;
 289        pcmd->para1 = para1;
 290        pcmd->para2 = para2;
 291        pcmd->msdelay = msdelay;
 292        return true;
 293}
 294EXPORT_SYMBOL_GPL(rtl8723_phy_set_sw_chnl_cmdarray);
 295
 296void rtl8723_phy_path_a_fill_iqk_matrix(struct ieee80211_hw *hw,
 297                                        bool iqk_ok,
 298                                        long result[][8],
 299                                        u8 final_candidate,
 300                                        bool btxonly)
 301{
 302        u32 oldval_0, x, tx0_a, reg;
 303        long y, tx0_c;
 304
 305        if (final_candidate == 0xFF) {
 306                return;
 307        } else if (iqk_ok) {
 308                oldval_0 = (rtl_get_bbreg(hw, ROFDM0_XATXIQIMBALANCE,
 309                                          MASKDWORD) >> 22) & 0x3FF;
 310                x = result[final_candidate][0];
 311                if ((x & 0x00000200) != 0)
 312                        x = x | 0xFFFFFC00;
 313                tx0_a = (x * oldval_0) >> 8;
 314                rtl_set_bbreg(hw, ROFDM0_XATXIQIMBALANCE, 0x3FF, tx0_a);
 315                rtl_set_bbreg(hw, ROFDM0_ECCATHRESHOLD, BIT(31),
 316                              ((x * oldval_0 >> 7) & 0x1));
 317                y = result[final_candidate][1];
 318                if ((y & 0x00000200) != 0)
 319                        y = y | 0xFFFFFC00;
 320                tx0_c = (y * oldval_0) >> 8;
 321                rtl_set_bbreg(hw, ROFDM0_XCTXAFE, 0xF0000000,
 322                              ((tx0_c & 0x3C0) >> 6));
 323                rtl_set_bbreg(hw, ROFDM0_XATXIQIMBALANCE, 0x003F0000,
 324                              (tx0_c & 0x3F));
 325                rtl_set_bbreg(hw, ROFDM0_ECCATHRESHOLD, BIT(29),
 326                              ((y * oldval_0 >> 7) & 0x1));
 327                if (btxonly)
 328                        return;
 329                reg = result[final_candidate][2];
 330                rtl_set_bbreg(hw, ROFDM0_XARXIQIMBALANCE, 0x3FF, reg);
 331                reg = result[final_candidate][3] & 0x3F;
 332                rtl_set_bbreg(hw, ROFDM0_XARXIQIMBALANCE, 0xFC00, reg);
 333                reg = (result[final_candidate][3] >> 6) & 0xF;
 334                rtl_set_bbreg(hw, 0xca0, 0xF0000000, reg);
 335        }
 336}
 337EXPORT_SYMBOL_GPL(rtl8723_phy_path_a_fill_iqk_matrix);
 338
 339void rtl8723_save_adda_registers(struct ieee80211_hw *hw, u32 *addareg,
 340                                 u32 *addabackup, u32 registernum)
 341{
 342        u32 i;
 343
 344        for (i = 0; i < registernum; i++)
 345                addabackup[i] = rtl_get_bbreg(hw, addareg[i], MASKDWORD);
 346}
 347EXPORT_SYMBOL_GPL(rtl8723_save_adda_registers);
 348
 349void rtl8723_phy_save_mac_registers(struct ieee80211_hw *hw,
 350                                    u32 *macreg, u32 *macbackup)
 351{
 352        struct rtl_priv *rtlpriv = rtl_priv(hw);
 353        u32 i;
 354
 355        for (i = 0; i < (IQK_MAC_REG_NUM - 1); i++)
 356                macbackup[i] = rtl_read_byte(rtlpriv, macreg[i]);
 357        macbackup[i] = rtl_read_dword(rtlpriv, macreg[i]);
 358}
 359EXPORT_SYMBOL_GPL(rtl8723_phy_save_mac_registers);
 360
 361void rtl8723_phy_reload_adda_registers(struct ieee80211_hw *hw,
 362                                       u32 *addareg, u32 *addabackup,
 363                                       u32 regiesternum)
 364{
 365        u32 i;
 366
 367        for (i = 0; i < regiesternum; i++)
 368                rtl_set_bbreg(hw, addareg[i], MASKDWORD, addabackup[i]);
 369}
 370EXPORT_SYMBOL_GPL(rtl8723_phy_reload_adda_registers);
 371
 372void rtl8723_phy_reload_mac_registers(struct ieee80211_hw *hw,
 373                                      u32 *macreg, u32 *macbackup)
 374{
 375        struct rtl_priv *rtlpriv = rtl_priv(hw);
 376        u32 i;
 377
 378        for (i = 0; i < (IQK_MAC_REG_NUM - 1); i++)
 379                rtl_write_byte(rtlpriv, macreg[i], (u8) macbackup[i]);
 380        rtl_write_dword(rtlpriv, macreg[i], macbackup[i]);
 381}
 382EXPORT_SYMBOL_GPL(rtl8723_phy_reload_mac_registers);
 383
 384void rtl8723_phy_path_adda_on(struct ieee80211_hw *hw, u32 *addareg,
 385                              bool is_patha_on, bool is2t)
 386{
 387        u32 pathon;
 388        u32 i;
 389
 390        pathon = is_patha_on ? 0x04db25a4 : 0x0b1b25a4;
 391        if (!is2t) {
 392                pathon = 0x0bdb25a0;
 393                rtl_set_bbreg(hw, addareg[0], MASKDWORD, 0x0b1b25a0);
 394        } else {
 395                rtl_set_bbreg(hw, addareg[0], MASKDWORD, pathon);
 396        }
 397
 398        for (i = 1; i < IQK_ADDA_REG_NUM; i++)
 399                rtl_set_bbreg(hw, addareg[i], MASKDWORD, pathon);
 400}
 401EXPORT_SYMBOL_GPL(rtl8723_phy_path_adda_on);
 402
 403void rtl8723_phy_mac_setting_calibration(struct ieee80211_hw *hw,
 404                                         u32 *macreg, u32 *macbackup)
 405{
 406        struct rtl_priv *rtlpriv = rtl_priv(hw);
 407        u32 i = 0;
 408
 409        rtl_write_byte(rtlpriv, macreg[i], 0x3F);
 410
 411        for (i = 1; i < (IQK_MAC_REG_NUM - 1); i++)
 412                rtl_write_byte(rtlpriv, macreg[i],
 413                               (u8) (macbackup[i] & (~BIT(3))));
 414        rtl_write_byte(rtlpriv, macreg[i], (u8) (macbackup[i] & (~BIT(5))));
 415}
 416EXPORT_SYMBOL_GPL(rtl8723_phy_mac_setting_calibration);
 417
 418void rtl8723_phy_path_a_standby(struct ieee80211_hw *hw)
 419{
 420        rtl_set_bbreg(hw, 0xe28, MASKDWORD, 0x0);
 421        rtl_set_bbreg(hw, 0x840, MASKDWORD, 0x00010000);
 422        rtl_set_bbreg(hw, 0xe28, MASKDWORD, 0x80800000);
 423}
 424EXPORT_SYMBOL_GPL(rtl8723_phy_path_a_standby);
 425
 426void rtl8723_phy_pi_mode_switch(struct ieee80211_hw *hw, bool pi_mode)
 427{
 428        u32 mode;
 429
 430        mode = pi_mode ? 0x01000100 : 0x01000000;
 431        rtl_set_bbreg(hw, 0x820, MASKDWORD, mode);
 432        rtl_set_bbreg(hw, 0x828, MASKDWORD, mode);
 433}
 434EXPORT_SYMBOL_GPL(rtl8723_phy_pi_mode_switch);
 435