drivers/staging/rtl8188eu/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  * 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  *
  19  ******************************************************************************/
  20 #define _RTW_PWRCTRL_C_
  21
  22 #include <osdep_service.h>
  23 #include <drv_types.h>
  24 #include <osdep_intf.h>
  25 #include <linux/usb.h>
  26
  27 void ips_enter(struct adapter *padapter)
  28 {
  29         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
  30         struct xmit_priv *pxmit_priv = &padapter->xmitpriv;
  31
  32         if (padapter->registrypriv.mp_mode == 1)
  33                 return;
  34
  35         if (pxmit_priv->free_xmitbuf_cnt != NR_XMITBUFF ||
  36             pxmit_priv->free_xmit_extbuf_cnt != NR_XMIT_EXTBUFF) {
  37                 DBG_88E_LEVEL(_drv_info_, "There are some pkts to transmit\n");
  38                 DBG_88E_LEVEL(_drv_info_, "free_xmitbuf_cnt: %d, free_xmit_extbuf_cnt: %d\n",
  39                               pxmit_priv->free_xmitbuf_cnt, pxmit_priv->free_xmit_extbuf_cnt);
  40                 return;
  41         }
  42
  43         _enter_pwrlock(&pwrpriv->lock);
  44
  45         pwrpriv->bips_processing = true;
  46
  47         /*  syn ips_mode with request */
  48         pwrpriv->ips_mode = pwrpriv->ips_mode_req;
  49
  50         pwrpriv->ips_enter_cnts++;
  51         DBG_88E("==>ips_enter cnts:%d\n", pwrpriv->ips_enter_cnts);
  52         if (rf_off == pwrpriv->change_rfpwrstate) {
  53                 pwrpriv->bpower_saving = true;
  54                 DBG_88E_LEVEL(_drv_info_, "nolinked power save enter\n");
  55
  56                 if (pwrpriv->ips_mode == IPS_LEVEL_2)
  57                         pwrpriv->bkeepfwalive = true;
  58
  59                 rtw_ips_pwr_down(padapter);
  60                 pwrpriv->rf_pwrstate = rf_off;
  61         }
  62         pwrpriv->bips_processing = false;
  63
  64         _exit_pwrlock(&pwrpriv->lock);
  65 }
  66
  67 int ips_leave(struct adapter *padapter)
  68 {
  69         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
  70         struct security_priv *psecuritypriv = &(padapter->securitypriv);
  71         struct mlme_priv *pmlmepriv = &(padapter->mlmepriv);
  72         int result = _SUCCESS;
  73         int keyid;
  74
  75
  76         _enter_pwrlock(&pwrpriv->lock);
  77
  78         if ((pwrpriv->rf_pwrstate == rf_off) && (!pwrpriv->bips_processing)) {
  79                 pwrpriv->bips_processing = true;
  80                 pwrpriv->change_rfpwrstate = rf_on;
  81                 pwrpriv->ips_leave_cnts++;
  82                 DBG_88E("==>ips_leave cnts:%d\n", pwrpriv->ips_leave_cnts);
  83
  84                 result = rtw_ips_pwr_up(padapter);
  85                 if (result == _SUCCESS) {
  86                         pwrpriv->rf_pwrstate = rf_on;
  87                 }
  88                 DBG_88E_LEVEL(_drv_info_, "nolinked power save leave\n");
  89
  90                 if ((_WEP40_ == psecuritypriv->dot11PrivacyAlgrthm) || (_WEP104_ == psecuritypriv->dot11PrivacyAlgrthm)) {
  91                         DBG_88E("==>%s, channel(%d), processing(%x)\n", __func__, padapter->mlmeextpriv.cur_channel, pwrpriv->bips_processing);
  92                         set_channel_bwmode(padapter, padapter->mlmeextpriv.cur_channel, HAL_PRIME_CHNL_OFFSET_DONT_CARE, HT_CHANNEL_WIDTH_20);
  93                         for (keyid = 0; keyid < 4; keyid++) {
  94                                 if (pmlmepriv->key_mask & BIT(keyid)) {
  95                                         if (keyid == psecuritypriv->dot11PrivacyKeyIndex)
  96                                                 result = rtw_set_key(padapter, psecuritypriv, keyid, 1);
  97                                         else
  98                                                 result = rtw_set_key(padapter, psecuritypriv, keyid, 0);
  99                                 }
 100                         }
 101                 }
 102
 103                 DBG_88E("==> ips_leave.....LED(0x%08x)...\n", rtw_read32(padapter, 0x4c));
 104                 pwrpriv->bips_processing = false;
 105
 106                 pwrpriv->bkeepfwalive = false;
 107                 pwrpriv->bpower_saving = false;
 108         }
 109
 110         _exit_pwrlock(&pwrpriv->lock);
 111
 112         return result;
 113 }
 114
 115 static bool rtw_pwr_unassociated_idle(struct adapter *adapter)
 116 {
 117         struct adapter *buddy = adapter->pbuddy_adapter;
 118         struct mlme_priv *pmlmepriv = &(adapter->mlmepriv);
 119 #ifdef CONFIG_88EU_P2P
 120         struct wifidirect_info  *pwdinfo = &(adapter->wdinfo);
 121 #endif
 122
 123         bool ret = false;
 124
 125         if (time_after_eq(adapter->pwrctrlpriv.ips_deny_time, jiffies))
 126                 goto exit;
 127
 128         if (check_fwstate(pmlmepriv, WIFI_ASOC_STATE|WIFI_SITE_MONITOR) ||
 129             check_fwstate(pmlmepriv, WIFI_UNDER_LINKING|WIFI_UNDER_WPS) ||
 130             check_fwstate(pmlmepriv, WIFI_AP_STATE) ||
 131             check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE|WIFI_ADHOC_STATE) ||
 132 #if defined(CONFIG_88EU_P2P)
 133             !rtw_p2p_chk_state(pwdinfo, P2P_STATE_NONE))
 134 #else
 135             0)
 136 #endif
 137                 goto exit;
 138
 139         /* consider buddy, if exist */
 140         if (buddy) {
 141                 struct mlme_priv *b_pmlmepriv = &(buddy->mlmepriv);
 142                 #ifdef CONFIG_88EU_P2P
 143                 struct wifidirect_info *b_pwdinfo = &(buddy->wdinfo);
 144                 #endif
 145
 146                 if (check_fwstate(b_pmlmepriv, WIFI_ASOC_STATE|WIFI_SITE_MONITOR) ||
 147                     check_fwstate(b_pmlmepriv, WIFI_UNDER_LINKING|WIFI_UNDER_WPS) ||
 148                     check_fwstate(b_pmlmepriv, WIFI_AP_STATE) ||
 149                     check_fwstate(b_pmlmepriv, WIFI_ADHOC_MASTER_STATE|WIFI_ADHOC_STATE) ||
 150 #if defined(CONFIG_88EU_P2P)
 151                     !rtw_p2p_chk_state(b_pwdinfo, P2P_STATE_NONE))
 152 #else
 153                     0)
 154 #endif
 155                         goto exit;
 156         }
 157         ret = true;
 158
 159 exit:
 160         return ret;
 161 }
 162
 163 void rtw_ps_processor(struct adapter *padapter)
 164 {
 165         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 166         struct mlme_priv *pmlmepriv = &(padapter->mlmepriv);
 167         enum rt_rf_power_state rfpwrstate;
 168
 169         pwrpriv->ps_processing = true;
 170
 171         if (pwrpriv->bips_processing)
 172                 goto exit;
 173
 174         if (padapter->pwrctrlpriv.bHWPwrPindetect) {
 175                 rfpwrstate = RfOnOffDetect(padapter);
 176                 DBG_88E("@@@@- #2  %s==> rfstate:%s\n", __func__, (rfpwrstate == rf_on) ? "rf_on" : "rf_off");
 177
 178                 if (rfpwrstate != pwrpriv->rf_pwrstate) {
 179                         if (rfpwrstate == rf_off) {
 180                                 pwrpriv->change_rfpwrstate = rf_off;
 181                                 pwrpriv->brfoffbyhw = true;
 182                                 padapter->bCardDisableWOHSM = true;
 183                                 rtw_hw_suspend(padapter);
 184                         } else {
 185                                 pwrpriv->change_rfpwrstate = rf_on;
 186                                 rtw_hw_resume(padapter);
 187                         }
 188                         DBG_88E("current rf_pwrstate(%s)\n", (pwrpriv->rf_pwrstate == rf_off) ? "rf_off" : "rf_on");
 189                 }
 190                 pwrpriv->pwr_state_check_cnts++;
 191         }
 192
 193         if (pwrpriv->ips_mode_req == IPS_NONE)
 194                 goto exit;
 195
 196         if (!rtw_pwr_unassociated_idle(padapter))
 197                 goto exit;
 198
 199         if ((pwrpriv->rf_pwrstate == rf_on) && ((pwrpriv->pwr_state_check_cnts%4) == 0)) {
 200                 DBG_88E("==>%s .fw_state(%x)\n", __func__, get_fwstate(pmlmepriv));
 201                 pwrpriv->change_rfpwrstate = rf_off;
 202
 203                 ips_enter(padapter);
 204         }
 205 exit:
 206         rtw_set_pwr_state_check_timer(&padapter->pwrctrlpriv);
 207         pwrpriv->ps_processing = false;
 208         return;
 209 }
 210
 211 static void pwr_state_check_handler(void *FunctionContext)
 212 {
 213         struct adapter *padapter = (struct adapter *)FunctionContext;
 214         rtw_ps_cmd(padapter);
 215 }
 216
 217 /*
 218  *
 219  * Parameters
 220  *      padapter
 221  *      pslv                    power state level, only could be PS_STATE_S0 ~ PS_STATE_S4
 222  *
 223  */
 224 void rtw_set_rpwm(struct adapter *padapter, u8 pslv)
 225 {
 226         u8      rpwm;
 227         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 228
 229         pslv = PS_STATE(pslv);
 230
 231         if (pwrpriv->btcoex_rfon) {
 232                 if (pslv < PS_STATE_S4)
 233                         pslv = PS_STATE_S3;
 234         }
 235
 236         if ((pwrpriv->rpwm == pslv)) {
 237                 RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_err_,
 238                          ("%s: Already set rpwm[0x%02X], new=0x%02X!\n", __func__, pwrpriv->rpwm, pslv));
 239                 return;
 240         }
 241
 242         if ((padapter->bSurpriseRemoved) ||
 243             (!padapter->hw_init_completed)) {
 244                 RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_err_,
 245                          ("%s: SurpriseRemoved(%d) hw_init_completed(%d)\n",
 246                          __func__, padapter->bSurpriseRemoved, padapter->hw_init_completed));
 247
 248                 pwrpriv->cpwm = PS_STATE_S4;
 249
 250                 return;
 251         }
 252
 253         if (padapter->bDriverStopped) {
 254                 RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_err_,
 255                          ("%s: change power state(0x%02X) when DriverStopped\n", __func__, pslv));
 256
 257                 if (pslv < PS_STATE_S2) {
 258                         RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_err_,
 259                                  ("%s: Reject to enter PS_STATE(0x%02X) lower than S2 when DriverStopped!!\n", __func__, pslv));
 260                         return;
 261                 }
 262         }
 263
 264         rpwm = pslv | pwrpriv->tog;
 265         RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_notice_,
 266                  ("rtw_set_rpwm: rpwm=0x%02x cpwm=0x%02x\n", rpwm, pwrpriv->cpwm));
 267
 268         pwrpriv->rpwm = pslv;
 269
 270         rtw_hal_set_hwreg(padapter, HW_VAR_SET_RPWM, (u8 *)(&rpwm));
 271
 272         pwrpriv->tog += 0x80;
 273         pwrpriv->cpwm = pslv;
 274 }
 275
 276 static u8 PS_RDY_CHECK(struct adapter *padapter)
 277 {
 278         u32 curr_time, delta_time;
 279         struct pwrctrl_priv     *pwrpriv = &padapter->pwrctrlpriv;
 280         struct mlme_priv        *pmlmepriv = &(padapter->mlmepriv);
 281
 282
 283         curr_time = jiffies;
 284         delta_time = curr_time - pwrpriv->DelayLPSLastTimeStamp;
 285
 286         if (delta_time < LPS_DELAY_TIME)
 287                 return false;
 288
 289         if ((check_fwstate(pmlmepriv, _FW_LINKED) == false) ||
 290             (check_fwstate(pmlmepriv, _FW_UNDER_SURVEY)) ||
 291             (check_fwstate(pmlmepriv, WIFI_AP_STATE)) ||
 292             (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE)) ||
 293             (check_fwstate(pmlmepriv, WIFI_ADHOC_STATE)))
 294                 return false;
 295         if (pwrpriv->bInSuspend)
 296                 return false;
 297         if ((padapter->securitypriv.dot11AuthAlgrthm == dot11AuthAlgrthm_8021X) && (padapter->securitypriv.binstallGrpkey == false)) {
 298                 DBG_88E("Group handshake still in progress !!!\n");
 299                 return false;
 300         }
 301         return true;
 302 }
 303
 304 void rtw_set_ps_mode(struct adapter *padapter, u8 ps_mode, u8 smart_ps, u8 bcn_ant_mode)
 305 {
 306         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 307 #ifdef CONFIG_88EU_P2P
 308         struct wifidirect_info  *pwdinfo = &(padapter->wdinfo);
 309 #endif /* CONFIG_88EU_P2P */
 310
 311         RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_notice_,
 312                  ("%s: PowerMode=%d Smart_PS=%d\n",
 313                   __func__, ps_mode, smart_ps));
 314
 315         if (ps_mode > PM_Card_Disable) {
 316                 RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_err_, ("ps_mode:%d error\n", ps_mode));
 317                 return;
 318         }
 319
 320         if (pwrpriv->pwr_mode == ps_mode) {
 321                 if (PS_MODE_ACTIVE == ps_mode)
 322                         return;
 323
 324                 if ((pwrpriv->smart_ps == smart_ps) &&
 325                     (pwrpriv->bcn_ant_mode == bcn_ant_mode))
 326                         return;
 327         }
 328
 329         /* if (pwrpriv->pwr_mode == PS_MODE_ACTIVE) */
 330         if (ps_mode == PS_MODE_ACTIVE) {
 331 #ifdef CONFIG_88EU_P2P
 332                 if (pwdinfo->opp_ps == 0) {
 333                         DBG_88E("rtw_set_ps_mode: Leave 802.11 power save\n");
 334                         pwrpriv->pwr_mode = ps_mode;
 335                         rtw_set_rpwm(padapter, PS_STATE_S4);
 336                         rtw_hal_set_hwreg(padapter, HW_VAR_H2C_FW_PWRMODE, (u8 *)(&ps_mode));
 337                         pwrpriv->bFwCurrentInPSMode = false;
 338                 }
 339         } else {
 340 #endif /* CONFIG_88EU_P2P */
 341                 if (PS_RDY_CHECK(padapter)) {
 342                         DBG_88E("%s: Enter 802.11 power save\n", __func__);
 343                         pwrpriv->bFwCurrentInPSMode = true;
 344                         pwrpriv->pwr_mode = ps_mode;
 345                         pwrpriv->smart_ps = smart_ps;
 346                         pwrpriv->bcn_ant_mode = bcn_ant_mode;
 347                         rtw_hal_set_hwreg(padapter, HW_VAR_H2C_FW_PWRMODE, (u8 *)(&ps_mode));
 348
 349 #ifdef CONFIG_88EU_P2P
 350                         /*  Set CTWindow after LPS */
 351                         if (pwdinfo->opp_ps == 1)
 352                                 p2p_ps_wk_cmd(padapter, P2P_PS_ENABLE, 0);
 353 #endif /* CONFIG_88EU_P2P */
 354
 355                         rtw_set_rpwm(padapter, PS_STATE_S2);
 356                 }
 357         }
 358 }
 359
 360 /*
 361  * Return:
 362  *      0:      Leave OK
 363  *      -1:     Timeout
 364  *      -2:     Other error
 365  */
 366 s32 LPS_RF_ON_check(struct adapter *padapter, u32 delay_ms)
 367 {
 368         u32 start_time;
 369         u8 bAwake = false;
 370         s32 err = 0;
 371
 372
 373         start_time = jiffies;
 374         while (1) {
 375                 rtw_hal_get_hwreg(padapter, HW_VAR_FWLPS_RF_ON, &bAwake);
 376                 if (bAwake)
 377                         break;
 378
 379                 if (padapter->bSurpriseRemoved) {
 380                         err = -2;
 381                         DBG_88E("%s: device surprise removed!!\n", __func__);
 382                         break;
 383                 }
 384
 385                 if (rtw_get_passing_time_ms(start_time) > delay_ms) {
 386                         err = -1;
 387                         DBG_88E("%s: Wait for FW LPS leave more than %u ms!!!\n", __func__, delay_ms);
 388                         break;
 389                 }
 390                 msleep(1);
 391         }
 392
 393         return err;
 394 }
 395
 396 /*  */
 397 /*      Description: */
 398 /*              Enter the leisure power save mode. */
 399 /*  */
 400 void LPS_Enter(struct adapter *padapter)
 401 {
 402         struct pwrctrl_priv     *pwrpriv = &padapter->pwrctrlpriv;
 403
 404         if (PS_RDY_CHECK(padapter) == false)
 405                 return;
 406
 407         if (pwrpriv->bLeisurePs) {
 408                 /*  Idle for a while if we connect to AP a while ago. */
 409                 if (pwrpriv->LpsIdleCount >= 2) { /*   4 Sec */
 410                         if (pwrpriv->pwr_mode == PS_MODE_ACTIVE) {
 411                                 pwrpriv->bpower_saving = true;
 412                                 DBG_88E("%s smart_ps:%d\n", __func__, pwrpriv->smart_ps);
 413                                 /* For Tenda W311R IOT issue */
 414                                 rtw_set_ps_mode(padapter, pwrpriv->power_mgnt, pwrpriv->smart_ps, 0);
 415                         }
 416                 } else {
 417                         pwrpriv->LpsIdleCount++;
 418                 }
 419         }
 420 }
 421
 422 #define LPS_LEAVE_TIMEOUT_MS 100
 423
 424 /*      Description: */
 425 /*              Leave the leisure power save mode. */
 426 void LPS_Leave(struct adapter *padapter)
 427 {
 428         struct pwrctrl_priv     *pwrpriv = &padapter->pwrctrlpriv;
 429
 430         if (pwrpriv->bLeisurePs) {
 431                 if (pwrpriv->pwr_mode != PS_MODE_ACTIVE) {
 432                         rtw_set_ps_mode(padapter, PS_MODE_ACTIVE, 0, 0);
 433
 434                         if (pwrpriv->pwr_mode == PS_MODE_ACTIVE)
 435                                 LPS_RF_ON_check(padapter, LPS_LEAVE_TIMEOUT_MS);
 436                 }
 437         }
 438
 439         pwrpriv->bpower_saving = false;
 440 }
 441
 442 /*  */
 443 /*  Description: Leave all power save mode: LPS, FwLPS, IPS if needed. */
 444 /*  Move code to function by tynli. 2010.03.26. */
 445 /*  */
 446 void LeaveAllPowerSaveMode(struct adapter *Adapter)
 447 {
 448         struct mlme_priv        *pmlmepriv = &(Adapter->mlmepriv);
 449         u8      enqueue = 0;
 450
 451         if (check_fwstate(pmlmepriv, _FW_LINKED)) { /* connect */
 452                 p2p_ps_wk_cmd(Adapter, P2P_PS_DISABLE, enqueue);
 453
 454                 rtw_lps_ctrl_wk_cmd(Adapter, LPS_CTRL_LEAVE, enqueue);
 455         }
 456 }
 457
 458 void rtw_init_pwrctrl_priv(struct adapter *padapter)
 459 {
 460         struct pwrctrl_priv *pwrctrlpriv = &padapter->pwrctrlpriv;
 461
 462         _init_pwrlock(&pwrctrlpriv->lock);
 463         pwrctrlpriv->rf_pwrstate = rf_on;
 464         pwrctrlpriv->ips_enter_cnts = 0;
 465         pwrctrlpriv->ips_leave_cnts = 0;
 466         pwrctrlpriv->bips_processing = false;
 467
 468         pwrctrlpriv->ips_mode = padapter->registrypriv.ips_mode;
 469         pwrctrlpriv->ips_mode_req = padapter->registrypriv.ips_mode;
 470
 471         pwrctrlpriv->pwr_state_check_interval = RTW_PWR_STATE_CHK_INTERVAL;
 472         pwrctrlpriv->pwr_state_check_cnts = 0;
 473         pwrctrlpriv->bInternalAutoSuspend = false;
 474         pwrctrlpriv->bInSuspend = false;
 475         pwrctrlpriv->bkeepfwalive = false;
 476
 477         pwrctrlpriv->LpsIdleCount = 0;
 478         if (padapter->registrypriv.mp_mode == 1)
 479                 pwrctrlpriv->power_mgnt = PS_MODE_ACTIVE ;
 480         else
 481                 pwrctrlpriv->power_mgnt = padapter->registrypriv.power_mgnt;/*  PS_MODE_MIN; */
 482         pwrctrlpriv->bLeisurePs = (PS_MODE_ACTIVE != pwrctrlpriv->power_mgnt) ? true : false;
 483
 484         pwrctrlpriv->bFwCurrentInPSMode = false;
 485
 486         pwrctrlpriv->rpwm = 0;
 487         pwrctrlpriv->cpwm = PS_STATE_S4;
 488
 489         pwrctrlpriv->pwr_mode = PS_MODE_ACTIVE;
 490         pwrctrlpriv->smart_ps = padapter->registrypriv.smart_ps;
 491         pwrctrlpriv->bcn_ant_mode = 0;
 492
 493         pwrctrlpriv->tog = 0x80;
 494
 495         pwrctrlpriv->btcoex_rfon = false;
 496
 497         _init_timer(&(pwrctrlpriv->pwr_state_check_timer), padapter->pnetdev, pwr_state_check_handler, (u8 *)padapter);
 498 }
 499
 500 inline void rtw_set_ips_deny(struct adapter *padapter, u32 ms)
 501 {
 502         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 503         pwrpriv->ips_deny_time = jiffies + rtw_ms_to_systime(ms);
 504 }
 505
 506 /*
 507 * rtw_pwr_wakeup - Wake the NIC up from: 1)IPS. 2)USB autosuspend
 508 * @adapter: pointer to struct adapter structure
 509 * @ips_deffer_ms: the ms will prevent from falling into IPS after wakeup
 510 * Return _SUCCESS or _FAIL
 511 */
 512
 513 int _rtw_pwr_wakeup(struct adapter *padapter, u32 ips_deffer_ms, const char *caller)
 514 {
 515         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 516         struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
 517         unsigned long expires;
 518         int ret = _SUCCESS;
 519
 520         expires = jiffies + rtw_ms_to_systime(ips_deffer_ms);
 521         if (time_before(pwrpriv->ips_deny_time, expires))
 522                 pwrpriv->ips_deny_time = jiffies + rtw_ms_to_systime(ips_deffer_ms);
 523
 524 {
 525         u32 start = jiffies;
 526         if (pwrpriv->ps_processing) {
 527                 DBG_88E("%s wait ps_processing...\n", __func__);
 528                 while (pwrpriv->ps_processing && rtw_get_passing_time_ms(start) <= 3000)
 529                         msleep(10);
 530                 if (pwrpriv->ps_processing)
 531                         DBG_88E("%s wait ps_processing timeout\n", __func__);
 532                 else
 533                         DBG_88E("%s wait ps_processing done\n", __func__);
 534         }
 535 }
 536
 537         /* System suspend is not allowed to wakeup */
 538         if ((!pwrpriv->bInternalAutoSuspend) && (pwrpriv->bInSuspend)) {
 539                 ret = _FAIL;
 540                 goto exit;
 541         }
 542
 543         /* block??? */
 544         if ((pwrpriv->bInternalAutoSuspend)  && (padapter->net_closed)) {
 545                 ret = _FAIL;
 546                 goto exit;
 547         }
 548
 549         /* I think this should be check in IPS, LPS, autosuspend functions... */
 550         if (check_fwstate(pmlmepriv, _FW_LINKED)) {
 551                 ret = _SUCCESS;
 552                 goto exit;
 553         }
 554         if (rf_off == pwrpriv->rf_pwrstate) {
 555                 DBG_88E("%s call ips_leave....\n", __func__);
 556                 if (_FAIL ==  ips_leave(padapter)) {
 557                         DBG_88E("======> ips_leave fail.............\n");
 558                         ret = _FAIL;
 559                         goto exit;
 560                 }
 561         }
 562
 563         /* TODO: the following checking need to be merged... */
 564         if (padapter->bDriverStopped || !padapter->bup ||
 565             !padapter->hw_init_completed) {
 566                 DBG_88E("%s: bDriverStopped=%d, bup=%d, hw_init_completed =%u\n"
 567                         , caller
 568                         , padapter->bDriverStopped
 569                         , padapter->bup
 570                         , padapter->hw_init_completed);
 571                 ret = false;
 572                 goto exit;
 573         }
 574
 575 exit:
 576         expires = jiffies + rtw_ms_to_systime(ips_deffer_ms);
 577         if (time_before(pwrpriv->ips_deny_time, expires))
 578                 pwrpriv->ips_deny_time = jiffies + rtw_ms_to_systime(ips_deffer_ms);
 579         return ret;
 580 }
 581
 582 int rtw_pm_set_lps(struct adapter *padapter, u8 mode)
 583 {
 584         int     ret = 0;
 585         struct pwrctrl_priv *pwrctrlpriv = &padapter->pwrctrlpriv;
 586
 587         if (mode < PS_MODE_NUM) {
 588                 if (pwrctrlpriv->power_mgnt != mode) {
 589                         if (PS_MODE_ACTIVE == mode)
 590                                 LeaveAllPowerSaveMode(padapter);
 591                         else
 592                                 pwrctrlpriv->LpsIdleCount = 2;
 593                         pwrctrlpriv->power_mgnt = mode;
 594                         pwrctrlpriv->bLeisurePs = (PS_MODE_ACTIVE != pwrctrlpriv->power_mgnt) ? true : false;
 595                 }
 596         } else {
 597                 ret = -EINVAL;
 598         }
 599
 600         return ret;
 601 }
 602
 603 int rtw_pm_set_ips(struct adapter *padapter, u8 mode)
 604 {
 605         struct pwrctrl_priv *pwrctrlpriv = &padapter->pwrctrlpriv;
 606
 607         if (mode == IPS_NORMAL || mode == IPS_LEVEL_2) {
 608                 rtw_ips_mode_req(pwrctrlpriv, mode);
 609                 DBG_88E("%s %s\n", __func__, mode == IPS_NORMAL ? "IPS_NORMAL" : "IPS_LEVEL_2");
 610                 return 0;
 611         } else if (mode == IPS_NONE) {
 612                 rtw_ips_mode_req(pwrctrlpriv, mode);
 613                 DBG_88E("%s %s\n", __func__, "IPS_NONE");
 614                 if ((padapter->bSurpriseRemoved == 0) && (_FAIL == rtw_pwr_wakeup(padapter)))
 615                         return -EFAULT;
 616         } else {
 617                 return -EINVAL;
 618         }
 619         return 0;
 620 }