drivers/staging/rtl8723au/core/rtw_pwrctrl.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
   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  ******************************************************************************/
  15 #define _RTW_PWRCTRL_C_
  16
  17 #include <osdep_service.h>
  18 #include <drv_types.h>
  19 #include <osdep_intf.h>
  20 #include <rtl8723a_cmd.h>
  21 #include <rtw_sreset.h>
  22
  23 #include <rtl8723a_bt_intf.h>
  24 #include <usb_ops_linux.h>
  25
  26 void ips_enter23a(struct rtw_adapter * padapter)
  27 {
  28         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
  29
  30         down(&pwrpriv->lock);
  31
  32         pwrpriv->bips_processing = true;
  33
  34         /*  syn ips_mode with request */
  35         pwrpriv->ips_mode = pwrpriv->ips_mode_req;
  36
  37         pwrpriv->ips_enter23a_cnts++;
  38         DBG_8723A("==>ips_enter23a cnts:%d\n", pwrpriv->ips_enter23a_cnts);
  39         rtl8723a_BT_disable_coexist(padapter);
  40
  41         if (pwrpriv->change_rfpwrstate == rf_off) {
  42                 pwrpriv->bpower_saving = true;
  43                 DBG_8723A_LEVEL(_drv_always_, "nolinked power save enter\n");
  44
  45                 if (pwrpriv->ips_mode == IPS_LEVEL_2)
  46                         pwrpriv->bkeepfwalive = true;
  47
  48                 rtw_ips_pwr_down23a(padapter);
  49                 pwrpriv->rf_pwrstate = rf_off;
  50         }
  51         pwrpriv->bips_processing = false;
  52
  53         up(&pwrpriv->lock);
  54 }
  55
  56 int ips_leave23a(struct rtw_adapter * padapter)
  57 {
  58         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
  59         struct security_priv *psecuritypriv = &padapter->securitypriv;
  60         struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
  61         int result = _SUCCESS;
  62         int keyid;
  63
  64         down(&pwrpriv->lock);
  65
  66         if (pwrpriv->rf_pwrstate == rf_off && !pwrpriv->bips_processing) {
  67                 pwrpriv->bips_processing = true;
  68                 pwrpriv->change_rfpwrstate = rf_on;
  69                 pwrpriv->ips_leave23a_cnts++;
  70                 DBG_8723A("==>ips_leave23a cnts:%d\n",
  71                           pwrpriv->ips_leave23a_cnts);
  72
  73                 result = rtw_ips_pwr_up23a(padapter);
  74                 if (result == _SUCCESS)
  75                         pwrpriv->rf_pwrstate = rf_on;
  76
  77                 DBG_8723A_LEVEL(_drv_always_, "nolinked power save leave\n");
  78
  79                 if (psecuritypriv->dot11PrivacyAlgrthm ==
  80                     WLAN_CIPHER_SUITE_WEP40 ||
  81                     psecuritypriv->dot11PrivacyAlgrthm ==
  82                     WLAN_CIPHER_SUITE_WEP104) {
  83                         DBG_8723A("==>%s, channel(%d), processing(%x)\n",
  84                                   __func__, padapter->mlmeextpriv.cur_channel,
  85                                   pwrpriv->bips_processing);
  86                         set_channel_bwmode23a(padapter,
  87                                               padapter->mlmeextpriv.cur_channel,
  88                                               HAL_PRIME_CHNL_OFFSET_DONT_CARE,
  89                                               HT_CHANNEL_WIDTH_20);
  90                         for (keyid = 0; keyid < 4; keyid++) {
  91                                 if (pmlmepriv->key_mask & BIT(keyid)) {
  92                                         if (keyid ==
  93                                             psecuritypriv->dot11PrivacyKeyIndex)
  94                                                 result = rtw_set_key23a(padapter, psecuritypriv, keyid, 1);
  95                                         else
  96                                                 result = rtw_set_key23a(padapter, psecuritypriv, keyid, 0);
  97                                 }
  98                         }
  99                 }
 100
 101                 DBG_8723A("==> ips_leave23a.....LED(0x%08x)...\n",
 102                           rtl8723au_read32(padapter, 0x4c));
 103                 pwrpriv->bips_processing = false;
 104
 105                 pwrpriv->bkeepfwalive = false;
 106                 pwrpriv->bpower_saving = false;
 107         }
 108
 109         up(&pwrpriv->lock);
 110
 111         return result;
 112 }
 113
 114
 115 static bool rtw_pwr_unassociated_idle(struct rtw_adapter *adapter)
 116 {
 117         struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
 118         struct xmit_priv *pxmit_priv = &adapter->xmitpriv;
 119
 120         bool ret = false;
 121
 122         if (time_after_eq(adapter->pwrctrlpriv.ips_deny_time, jiffies))
 123                 goto exit;
 124
 125         if (check_fwstate(pmlmepriv, WIFI_ASOC_STATE|WIFI_SITE_MONITOR) ||
 126             check_fwstate(pmlmepriv, WIFI_UNDER_LINKING|WIFI_UNDER_WPS) ||
 127             check_fwstate(pmlmepriv, WIFI_AP_STATE) ||
 128             check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE|WIFI_ADHOC_STATE)){
 129                 goto exit;
 130         }
 131
 132         if (pxmit_priv->free_xmitbuf_cnt != NR_XMITBUFF ||
 133                 pxmit_priv->free_xmit_extbuf_cnt != NR_XMIT_EXTBUFF) {
 134                 DBG_8723A_LEVEL(_drv_always_,
 135                                 "There are some pkts to transmit\n");
 136                 DBG_8723A_LEVEL(_drv_info_, "free_xmitbuf_cnt: %d, "
 137                                 "free_xmit_extbuf_cnt: %d\n",
 138                                 pxmit_priv->free_xmitbuf_cnt,
 139                                 pxmit_priv->free_xmit_extbuf_cnt);
 140                 goto exit;
 141         }
 142
 143         ret = true;
 144
 145 exit:
 146         return ret;
 147 }
 148
 149 void rtw_ps_processor23a(struct rtw_adapter*padapter)
 150 {
 151         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 152         struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
 153         enum rt_rf_power_state rfpwrstate;
 154
 155         pwrpriv->ps_processing = true;
 156
 157         if (pwrpriv->bips_processing == true)
 158                 goto exit;
 159
 160         if (padapter->pwrctrlpriv.bHWPwrPindetect) {
 161                 rfpwrstate = RfOnOffDetect23a(padapter);
 162                 DBG_8723A("@@@@- #2  %s ==> rfstate:%s\n", __func__,
 163                           (rfpwrstate == rf_on)?"rf_on":"rf_off");
 164
 165                 if (rfpwrstate!= pwrpriv->rf_pwrstate) {
 166                         if (rfpwrstate == rf_off) {
 167                                 pwrpriv->change_rfpwrstate = rf_off;
 168                                 padapter->bCardDisableWOHSM = true;
 169                                 rtw_hw_suspend23a(padapter);
 170                         } else {
 171                                 pwrpriv->change_rfpwrstate = rf_on;
 172                                 rtw_hw_resume23a(padapter);
 173                         }
 174                         DBG_8723A("current rf_pwrstate(%s)\n",
 175                                   (pwrpriv->rf_pwrstate == rf_off) ?
 176                                   "rf_off":"rf_on");
 177                 }
 178                 pwrpriv->pwr_state_check_cnts ++;
 179         }
 180
 181         if (pwrpriv->ips_mode_req == IPS_NONE)
 182                 goto exit;
 183
 184         if (rtw_pwr_unassociated_idle(padapter) == false)
 185                 goto exit;
 186
 187         if (pwrpriv->rf_pwrstate == rf_on &&
 188             (pwrpriv->pwr_state_check_cnts % 4) == 0) {
 189                 DBG_8723A("==>%s .fw_state(%x)\n", __func__,
 190                           get_fwstate(pmlmepriv));
 191                 pwrpriv->change_rfpwrstate = rf_off;
 192                 ips_enter23a(padapter);
 193         }
 194 exit:
 195         rtw_set_pwr_state_check_timer(&padapter->pwrctrlpriv);
 196         pwrpriv->ps_processing = false;
 197         return;
 198 }
 199
 200 static void pwr_state_check_handler(unsigned long data)
 201 {
 202         struct rtw_adapter *padapter = (struct rtw_adapter *)data;
 203         rtw_ps_cmd23a(padapter);
 204 }
 205
 206 /*
 207  *
 208  * Parameters
 209  *   padapter
 210  *   pslv       power state level, only could be PS_STATE_S0 ~ PS_STATE_S4
 211  *
 212  */
 213 void rtw_set_rpwm23a(struct rtw_adapter *padapter, u8 pslv)
 214 {
 215         u8 rpwm;
 216         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 217
 218         pslv = PS_STATE(pslv);
 219
 220         if (pwrpriv->btcoex_rfon) {
 221                 if (pslv < PS_STATE_S4)
 222                         pslv = PS_STATE_S3;
 223         }
 224
 225         if (pwrpriv->rpwm == pslv) {
 226                 RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_err_,
 227                         ("%s: Already set rpwm[0x%02X], new = 0x%02X!\n",
 228                          __func__, pwrpriv->rpwm, pslv));
 229                 return;
 230         }
 231
 232         if (padapter->bSurpriseRemoved == true ||
 233             padapter->hw_init_completed == false) {
 234                 RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_err_,
 235                          ("%s: SurpriseRemoved(%d) hw_init_completed(%d)\n",
 236                           __func__, padapter->bSurpriseRemoved,
 237                           padapter->hw_init_completed));
 238
 239                 pwrpriv->cpwm = PS_STATE_S4;
 240
 241                 return;
 242         }
 243
 244         if (padapter->bDriverStopped == true) {
 245                 RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_err_,
 246                          ("%s: change power state(0x%02X) when DriverStopped\n",
 247                           __func__, pslv));
 248
 249                 if (pslv < PS_STATE_S2) {
 250                         RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_err_,
 251                                  ("%s: Reject to enter PS_STATE(0x%02X) lower "
 252                                   "than S2 when DriverStopped!!\n",
 253                                   __func__, pslv));
 254                         return;
 255                 }
 256         }
 257
 258         rpwm = pslv | pwrpriv->tog;
 259         RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_notice_,
 260                  ("rtw_set_rpwm23a: rpwm = 0x%02x cpwm = 0x%02x\n",
 261                   rpwm, pwrpriv->cpwm));
 262
 263         pwrpriv->rpwm = pslv;
 264
 265         rtl8723a_set_rpwm(padapter, rpwm);
 266
 267         pwrpriv->tog += 0x80;
 268         pwrpriv->cpwm = pslv;
 269 }
 270
 271 static bool PS_RDY_CHECK(struct rtw_adapter * padapter)
 272 {
 273         unsigned long delta_time;
 274         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 275         struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
 276
 277         delta_time = jiffies - pwrpriv->DelayLPSLastTimeStamp;
 278
 279         if (delta_time < LPS_DELAY_TIME)
 280                 return false;
 281
 282         if (!check_fwstate(pmlmepriv, _FW_LINKED) ||
 283             check_fwstate(pmlmepriv, _FW_UNDER_SURVEY) ||
 284             check_fwstate(pmlmepriv, WIFI_AP_STATE) ||
 285             check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) ||
 286             check_fwstate(pmlmepriv, WIFI_ADHOC_STATE))
 287                 return false;
 288         if (pwrpriv->bInSuspend)
 289                 return false;
 290         if (padapter->securitypriv.dot11AuthAlgrthm == dot11AuthAlgrthm_8021X &&
 291             !padapter->securitypriv.binstallGrpkey) {
 292                 DBG_8723A("Group handshake still in progress !!!\n");
 293                 return false;
 294         }
 295         if (!rtw_cfg80211_pwr_mgmt(padapter))
 296                 return false;
 297
 298         return true;
 299 }
 300
 301 void rtw_set_ps_mode23a(struct rtw_adapter *padapter, u8 ps_mode,
 302                         u8 smart_ps, u8 bcn_ant_mode)
 303 {
 304         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 305
 306         RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_notice_,
 307                          ("%s: PowerMode =%d Smart_PS =%d\n",
 308                           __func__, ps_mode, smart_ps));
 309
 310         if (ps_mode > PM_Card_Disable) {
 311                 RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_err_,
 312                          ("ps_mode:%d error\n", ps_mode));
 313                 return;
 314         }
 315
 316         if (pwrpriv->pwr_mode == ps_mode) {
 317                 if (PS_MODE_ACTIVE == ps_mode)
 318                         return;
 319
 320                 if (pwrpriv->smart_ps == smart_ps &&
 321                     pwrpriv->bcn_ant_mode == bcn_ant_mode)
 322                         return;
 323         }
 324
 325         if (ps_mode == PS_MODE_ACTIVE) {
 326                 DBG_8723A("rtw_set_ps_mode23a: Leave 802.11 power save\n");
 327
 328                 pwrpriv->pwr_mode = ps_mode;
 329                 rtw_set_rpwm23a(padapter, PS_STATE_S4);
 330                 rtl8723a_set_FwPwrMode_cmd(padapter, ps_mode);
 331                 pwrpriv->bFwCurrentInPSMode = false;
 332         } else {
 333                 if (PS_RDY_CHECK(padapter) ||
 334                     rtl8723a_BT_using_antenna_1(padapter)) {
 335                         DBG_8723A("%s: Enter 802.11 power save\n", __func__);
 336
 337                         pwrpriv->bFwCurrentInPSMode = true;
 338                         pwrpriv->pwr_mode = ps_mode;
 339                         pwrpriv->smart_ps = smart_ps;
 340                         pwrpriv->bcn_ant_mode = bcn_ant_mode;
 341                         rtl8723a_set_FwPwrMode_cmd(padapter, ps_mode);
 342
 343                         rtw_set_rpwm23a(padapter, PS_STATE_S2);
 344                 }
 345         }
 346 }
 347
 348 /*
 349  * Return:
 350  *      0:      Leave OK
 351  *      -1:     Timeout
 352  *      -2:     Other error
 353  */
 354 s32 LPS_RF_ON_check23a(struct rtw_adapter *padapter, u32 delay_ms)
 355 {
 356         unsigned long start_time, end_time;
 357         u8 bAwake = false;
 358         s32 err = 0;
 359
 360         start_time = jiffies;
 361         end_time = start_time + msecs_to_jiffies(delay_ms);
 362
 363         while (1)
 364         {
 365                 bAwake = rtl8723a_get_fwlps_rf_on(padapter);
 366                 if (bAwake == true)
 367                         break;
 368
 369                 if (padapter->bSurpriseRemoved == true) {
 370                         err = -2;
 371                         DBG_8723A("%s: device surprise removed!!\n", __func__);
 372                         break;
 373                 }
 374
 375                 if (time_after(jiffies, end_time)) {
 376                         err = -1;
 377                         DBG_8723A("%s: Wait for FW LPS leave more than %u "
 378                                   "ms!\n", __func__, delay_ms);
 379                         break;
 380                 }
 381                 udelay(100);
 382         }
 383
 384         return err;
 385 }
 386
 387 /*      Description: */
 388 /*              Enter the leisure power save mode. */
 389 void LPS_Enter23a(struct rtw_adapter *padapter)
 390 {
 391         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 392
 393         if (!PS_RDY_CHECK(padapter))
 394                 return;
 395
 396         if (pwrpriv->bLeisurePs) {
 397                 /*  Idle for a while if we connect to AP a while ago. */
 398                 if (pwrpriv->LpsIdleCount >= 2) { /*   4 Sec */
 399                         if (pwrpriv->pwr_mode == PS_MODE_ACTIVE) {
 400                                 pwrpriv->bpower_saving = true;
 401                                 DBG_8723A("%s smart_ps:%d\n", __func__,
 402                                           pwrpriv->smart_ps);
 403                                 /* For Tenda W311R IOT issue */
 404                                 rtw_set_ps_mode23a(padapter,
 405                                                    pwrpriv->power_mgnt,
 406                                                    pwrpriv->smart_ps, 0);
 407                         }
 408                 } else
 409                         pwrpriv->LpsIdleCount++;
 410         }
 411 }
 412
 413 /*      Description: */
 414 /*              Leave the leisure power save mode. */
 415 void LPS_Leave23a(struct rtw_adapter *padapter)
 416 {
 417 #define LPS_LEAVE_TIMEOUT_MS 100
 418
 419         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 420
 421         if (pwrpriv->bLeisurePs) {
 422                 if (pwrpriv->pwr_mode != PS_MODE_ACTIVE) {
 423                         rtw_set_ps_mode23a(padapter, PS_MODE_ACTIVE, 0, 0);
 424
 425                         if (pwrpriv->pwr_mode == PS_MODE_ACTIVE)
 426                                 LPS_RF_ON_check23a(padapter,
 427                                                    LPS_LEAVE_TIMEOUT_MS);
 428                 }
 429         }
 430
 431         pwrpriv->bpower_saving = false;
 432 }
 433
 434 /*  Description: Leave all power save mode: LPS, FwLPS, IPS if needed. */
 435 /*  Move code to function by tynli. 2010.03.26. */
 436 void LeaveAllPowerSaveMode23a(struct rtw_adapter *Adapter)
 437 {
 438         struct mlme_priv *pmlmepriv = &Adapter->mlmepriv;
 439         u8 enqueue = 0;
 440
 441         /* DBG_8723A("%s.....\n", __func__); */
 442         if (check_fwstate(pmlmepriv, _FW_LINKED))
 443                 rtw_lps_ctrl_wk_cmd23a(Adapter, LPS_CTRL_LEAVE, enqueue);
 444 }
 445
 446 void rtw_init_pwrctrl_priv23a(struct rtw_adapter *padapter)
 447 {
 448         struct pwrctrl_priv *pwrctrlpriv = &padapter->pwrctrlpriv;
 449
 450         sema_init(&pwrctrlpriv->lock, 1);
 451         pwrctrlpriv->rf_pwrstate = rf_on;
 452         pwrctrlpriv->ips_enter23a_cnts = 0;
 453         pwrctrlpriv->ips_leave23a_cnts = 0;
 454         pwrctrlpriv->bips_processing = false;
 455
 456         pwrctrlpriv->ips_mode = padapter->registrypriv.ips_mode;
 457         pwrctrlpriv->ips_mode_req = padapter->registrypriv.ips_mode;
 458
 459         pwrctrlpriv->pwr_state_check_interval = RTW_PWR_STATE_CHK_INTERVAL;
 460         pwrctrlpriv->pwr_state_check_cnts = 0;
 461         pwrctrlpriv->bInSuspend = false;
 462         pwrctrlpriv->bkeepfwalive = false;
 463
 464         pwrctrlpriv->LpsIdleCount = 0;
 465
 466         /*  PS_MODE_MIN; */
 467         pwrctrlpriv->power_mgnt = padapter->registrypriv.power_mgnt;
 468         pwrctrlpriv->bLeisurePs =
 469                 (PS_MODE_ACTIVE != pwrctrlpriv->power_mgnt)?true:false;
 470
 471         pwrctrlpriv->bFwCurrentInPSMode = false;
 472
 473         pwrctrlpriv->rpwm = 0;
 474         pwrctrlpriv->cpwm = PS_STATE_S4;
 475
 476         pwrctrlpriv->pwr_mode = PS_MODE_ACTIVE;
 477         pwrctrlpriv->smart_ps = padapter->registrypriv.smart_ps;
 478         pwrctrlpriv->bcn_ant_mode = 0;
 479
 480         pwrctrlpriv->tog = 0x80;
 481
 482         pwrctrlpriv->btcoex_rfon = false;
 483
 484         setup_timer(&pwrctrlpriv->pwr_state_check_timer,
 485                     pwr_state_check_handler, (unsigned long)padapter);
 486 }
 487
 488 void rtw_free_pwrctrl_priv(struct rtw_adapter *adapter)
 489 {
 490 }
 491
 492 inline void rtw_set_ips_deny23a(struct rtw_adapter *padapter, u32 ms)
 493 {
 494         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 495         pwrpriv->ips_deny_time = jiffies + msecs_to_jiffies(ms);
 496 }
 497
 498 /*
 499 * rtw_pwr_wakeup - Wake the NIC up from: 1)IPS. 2)USB autosuspend
 500 * @adapter: pointer to _adapter structure
 501 * @ips_deffer_ms: the ms will prevent from falling into IPS after wakeup
 502 * Return _SUCCESS or _FAIL
 503 */
 504
 505 int _rtw_pwr_wakeup23a(struct rtw_adapter *padapter, u32 ips_deffer_ms, const char *caller)
 506 {
 507         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 508         struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
 509         int ret = _SUCCESS;
 510         unsigned long start = jiffies;
 511         unsigned long new_deny_time;
 512
 513         new_deny_time = jiffies + msecs_to_jiffies(ips_deffer_ms);
 514
 515         if (time_before(pwrpriv->ips_deny_time, new_deny_time))
 516                 pwrpriv->ips_deny_time = new_deny_time;
 517
 518         if (pwrpriv->ps_processing) {
 519                 DBG_8723A("%s wait ps_processing...\n", __func__);
 520                 while (pwrpriv->ps_processing &&
 521                        jiffies_to_msecs(jiffies - start) <= 3000)
 522                         msleep(10);
 523                 if (pwrpriv->ps_processing)
 524                         DBG_8723A("%s wait ps_processing timeout\n", __func__);
 525                 else
 526                         DBG_8723A("%s wait ps_processing done\n", __func__);
 527         }
 528
 529         if (rtw_sreset_inprogress(padapter)) {
 530                 DBG_8723A("%s wait sreset_inprogress...\n", __func__);
 531                 while (rtw_sreset_inprogress(padapter) &&
 532                        jiffies_to_msecs(jiffies - start) <= 4000)
 533                         msleep(10);
 534                 if (rtw_sreset_inprogress(padapter))
 535                         DBG_8723A("%s wait sreset_inprogress timeout\n",
 536                                   __func__);
 537                 else
 538                         DBG_8723A("%s wait sreset_inprogress done\n", __func__);
 539         }
 540
 541         if (pwrpriv->bInSuspend) {
 542                 DBG_8723A("%s wait bInSuspend...\n", __func__);
 543                 while (pwrpriv->bInSuspend &&
 544                        (jiffies_to_msecs(jiffies - start) <= 3000)) {
 545                         msleep(10);
 546                 }
 547                 if (pwrpriv->bInSuspend)
 548                         DBG_8723A("%s wait bInSuspend timeout\n", __func__);
 549                 else
 550                         DBG_8723A("%s wait bInSuspend done\n", __func__);
 551         }
 552
 553         /* System suspend is not allowed to wakeup */
 554         if (pwrpriv->bInSuspend) {
 555                 ret = _FAIL;
 556                 goto exit;
 557         }
 558
 559         /* I think this should be check in IPS, LPS, autosuspend functions... */
 560         if (check_fwstate(pmlmepriv, _FW_LINKED)) {
 561                 ret = _SUCCESS;
 562                 goto exit;
 563         }
 564
 565         if (rf_off == pwrpriv->rf_pwrstate) {
 566                 DBG_8723A("%s call ips_leave23a....\n", __func__);
 567                 if (ips_leave23a(padapter)== _FAIL) {
 568                         DBG_8723A("======> ips_leave23a fail.............\n");
 569                         ret = _FAIL;
 570                         goto exit;
 571                 }
 572         }
 573
 574         /* TODO: the following checking need to be merged... */
 575         if (padapter->bDriverStopped || !padapter->bup ||
 576             !padapter->hw_init_completed) {
 577                 DBG_8723A("%s: bDriverStopped =%d, bup =%d, hw_init_completed "
 578                           "=%u\n", caller, padapter->bDriverStopped,
 579                           padapter->bup, padapter->hw_init_completed);
 580                 ret = _FAIL;
 581                 goto exit;
 582         }
 583
 584 exit:
 585         new_deny_time = jiffies + msecs_to_jiffies(ips_deffer_ms);
 586         if (time_before(pwrpriv->ips_deny_time, new_deny_time))
 587                 pwrpriv->ips_deny_time = new_deny_time;
 588         return ret;
 589 }
 590
 591 int rtw_pm_set_lps23a(struct rtw_adapter *padapter, u8 mode)
 592 {
 593         int ret = 0;
 594         struct pwrctrl_priv *pwrctrlpriv = &padapter->pwrctrlpriv;
 595
 596         if (mode < PS_MODE_NUM) {
 597                 if (pwrctrlpriv->power_mgnt != mode) {
 598                         if (PS_MODE_ACTIVE == mode)
 599                                 LeaveAllPowerSaveMode23a(padapter);
 600                         else
 601                                 pwrctrlpriv->LpsIdleCount = 2;
 602                         pwrctrlpriv->power_mgnt = mode;
 603                         pwrctrlpriv->bLeisurePs =
 604                                 (PS_MODE_ACTIVE != pwrctrlpriv->power_mgnt) ?
 605                                 true:false;
 606                 }
 607         } else
 608                 ret = -EINVAL;
 609
 610         return ret;
 611 }
 612
 613 int rtw_pm_set_ips23a(struct rtw_adapter *padapter, u8 mode)
 614 {
 615         struct pwrctrl_priv *pwrctrlpriv = &padapter->pwrctrlpriv;
 616
 617         if (mode != IPS_NORMAL && mode != IPS_LEVEL_2 && mode != IPS_NONE)
 618                 return -EINVAL;
 619
 620         pwrctrlpriv->ips_mode_req = mode;
 621         if (mode == IPS_NONE) {
 622                 DBG_8723A("%s %s\n", __func__, "IPS_NONE");
 623                 if (padapter->bSurpriseRemoved == 0 &&
 624                     rtw_pwr_wakeup(padapter) == _FAIL)
 625                         return -EFAULT;
 626         }
 627
 628         return 0;
 629 }