drivers/staging/rtl8188eu/core/rtw_pwrctrl.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /******************************************************************************
   3  *
   4  * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
   5  *
   6  ******************************************************************************/
   7 #define _RTW_PWRCTRL_C_
   8
   9 #include <osdep_service.h>
  10 #include <drv_types.h>
  11 #include <osdep_intf.h>
  12 #include <usb_ops_linux.h>
  13 #include <linux/usb.h>
  14
  15 static int rtw_hw_suspend(struct adapter *padapter)
  16 {
  17         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
  18         struct net_device *pnetdev = padapter->pnetdev;
  19
  20         if ((!padapter->bup) || (padapter->bDriverStopped) ||
  21             (padapter->bSurpriseRemoved)) {
  22                 DBG_88E("padapter->bup=%d bDriverStopped=%d bSurpriseRemoved = %d\n",
  23                         padapter->bup, padapter->bDriverStopped,
  24                         padapter->bSurpriseRemoved);
  25                 goto error_exit;
  26         }
  27
  28         /* system suspend */
  29         LeaveAllPowerSaveMode(padapter);
  30
  31         DBG_88E("==> %s\n", __func__);
  32         mutex_lock(&pwrpriv->mutex_lock);
  33         pwrpriv->bips_processing = true;
  34         /* s1. */
  35         if (pnetdev) {
  36                 netif_carrier_off(pnetdev);
  37                 netif_tx_stop_all_queues(pnetdev);
  38         }
  39
  40         /* s2. */
  41         rtw_disassoc_cmd(padapter, 500, false);
  42
  43         /* s2-2.  indicate disconnect to os */
  44         {
  45                 struct  mlme_priv *pmlmepriv = &padapter->mlmepriv;
  46
  47                 if (check_fwstate(pmlmepriv, _FW_LINKED)) {
  48                         _clr_fwstate_(pmlmepriv, _FW_LINKED);
  49
  50                         led_control_8188eu(padapter, LED_CTL_NO_LINK);
  51
  52                         rtw_os_indicate_disconnect(padapter);
  53
  54                         /* donnot enqueue cmd */
  55                         rtw_lps_ctrl_wk_cmd(padapter, LPS_CTRL_DISCONNECT, 0);
  56                 }
  57         }
  58         /* s2-3. */
  59         rtw_free_assoc_resources(padapter);
  60
  61         /* s2-4. */
  62         rtw_free_network_queue(padapter, true);
  63         rtw_ips_dev_unload(padapter);
  64         pwrpriv->rf_pwrstate = rf_off;
  65         pwrpriv->bips_processing = false;
  66
  67         mutex_unlock(&pwrpriv->mutex_lock);
  68
  69         return 0;
  70
  71 error_exit:
  72         DBG_88E("%s, failed\n", __func__);
  73         return -1;
  74 }
  75
  76 static int rtw_hw_resume(struct adapter *padapter)
  77 {
  78         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
  79         struct net_device *pnetdev = padapter->pnetdev;
  80
  81         /* system resume */
  82         DBG_88E("==> %s\n", __func__);
  83         mutex_lock(&pwrpriv->mutex_lock);
  84         pwrpriv->bips_processing = true;
  85         rtw_reset_drv_sw(padapter);
  86
  87         if (ips_netdrv_open(rtw_netdev_priv(pnetdev)) != _SUCCESS) {
  88                 mutex_unlock(&pwrpriv->mutex_lock);
  89                 goto error_exit;
  90         }
  91
  92         netif_device_attach(pnetdev);
  93         netif_carrier_on(pnetdev);
  94
  95         if (!netif_queue_stopped(pnetdev))
  96                 netif_start_queue(pnetdev);
  97         else
  98                 netif_wake_queue(pnetdev);
  99
 100         pwrpriv->bkeepfwalive = false;
 101         pwrpriv->brfoffbyhw = false;
 102
 103         pwrpriv->rf_pwrstate = rf_on;
 104         pwrpriv->bips_processing = false;
 105
 106         mutex_unlock(&pwrpriv->mutex_lock);
 107
 108         return 0;
 109 error_exit:
 110         DBG_88E("%s, Open net dev failed\n", __func__);
 111         return -1;
 112 }
 113
 114 void ips_enter(struct adapter *padapter)
 115 {
 116         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 117         struct xmit_priv *pxmit_priv = &padapter->xmitpriv;
 118
 119         if (padapter->registrypriv.mp_mode == 1)
 120                 return;
 121
 122         if (pxmit_priv->free_xmitbuf_cnt != NR_XMITBUFF ||
 123             pxmit_priv->free_xmit_extbuf_cnt != NR_XMIT_EXTBUFF) {
 124                 DBG_88E_LEVEL(_drv_info_, "There are some pkts to transmit\n");
 125                 DBG_88E_LEVEL(_drv_info_, "free_xmitbuf_cnt: %d, free_xmit_extbuf_cnt: %d\n",
 126                               pxmit_priv->free_xmitbuf_cnt, pxmit_priv->free_xmit_extbuf_cnt);
 127                 return;
 128         }
 129
 130         mutex_lock(&pwrpriv->mutex_lock);
 131
 132         pwrpriv->bips_processing = true;
 133
 134         /*  syn ips_mode with request */
 135         pwrpriv->ips_mode = pwrpriv->ips_mode_req;
 136
 137         pwrpriv->ips_enter_cnts++;
 138         DBG_88E("==>%s:%d\n", __func__, pwrpriv->ips_enter_cnts);
 139         if (rf_off == pwrpriv->change_rfpwrstate) {
 140                 pwrpriv->bpower_saving = true;
 141                 DBG_88E_LEVEL(_drv_info_, "nolinked power save enter\n");
 142
 143                 if (pwrpriv->ips_mode == IPS_LEVEL_2)
 144                         pwrpriv->bkeepfwalive = true;
 145
 146                 rtw_ips_pwr_down(padapter);
 147                 pwrpriv->rf_pwrstate = rf_off;
 148         }
 149         pwrpriv->bips_processing = false;
 150
 151         mutex_unlock(&pwrpriv->mutex_lock);
 152 }
 153
 154 int ips_leave(struct adapter *padapter)
 155 {
 156         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 157         struct security_priv *psecuritypriv = &padapter->securitypriv;
 158         struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
 159         int result = _SUCCESS;
 160         int keyid;
 161
 162         mutex_lock(&pwrpriv->mutex_lock);
 163
 164         if ((pwrpriv->rf_pwrstate == rf_off) && (!pwrpriv->bips_processing)) {
 165                 pwrpriv->bips_processing = true;
 166                 pwrpriv->change_rfpwrstate = rf_on;
 167                 pwrpriv->ips_leave_cnts++;
 168                 DBG_88E("==>%s:%d\n", __func__, pwrpriv->ips_leave_cnts);
 169
 170                 result = rtw_ips_pwr_up(padapter);
 171                 if (result == _SUCCESS)
 172                         pwrpriv->rf_pwrstate = rf_on;
 173
 174                 DBG_88E_LEVEL(_drv_info_, "nolinked power save leave\n");
 175
 176                 if ((psecuritypriv->dot11PrivacyAlgrthm == _WEP40_) || (psecuritypriv->dot11PrivacyAlgrthm == _WEP104_)) {
 177                         DBG_88E("==>%s, channel(%d), processing(%x)\n", __func__, padapter->mlmeextpriv.cur_channel, pwrpriv->bips_processing);
 178                         set_channel_bwmode(padapter, padapter->mlmeextpriv.cur_channel, HAL_PRIME_CHNL_OFFSET_DONT_CARE, HT_CHANNEL_WIDTH_20);
 179                         for (keyid = 0; keyid < 4; keyid++) {
 180                                 if (pmlmepriv->key_mask & BIT(keyid)) {
 181                                         if (keyid == psecuritypriv->dot11PrivacyKeyIndex)
 182                                                 result = rtw_set_key(padapter, psecuritypriv, keyid, 1);
 183                                         else
 184                                                 result = rtw_set_key(padapter, psecuritypriv, keyid, 0);
 185                                 }
 186                         }
 187                 }
 188
 189                 DBG_88E("==> %s.....LED(0x%08x)...\n", __func__, usb_read32(padapter, 0x4c));
 190                 pwrpriv->bips_processing = false;
 191
 192                 pwrpriv->bkeepfwalive = false;
 193                 pwrpriv->bpower_saving = false;
 194         }
 195
 196         mutex_unlock(&pwrpriv->mutex_lock);
 197
 198         return result;
 199 }
 200
 201 static bool rtw_pwr_unassociated_idle(struct adapter *adapter)
 202 {
 203         struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
 204
 205         if (time_after_eq(adapter->pwrctrlpriv.ips_deny_time, jiffies))
 206                 return false;
 207
 208         if (check_fwstate(pmlmepriv, WIFI_ASOC_STATE | WIFI_SITE_MONITOR) ||
 209             check_fwstate(pmlmepriv, WIFI_UNDER_LINKING | WIFI_UNDER_WPS) ||
 210             check_fwstate(pmlmepriv, WIFI_AP_STATE) ||
 211             check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE | WIFI_ADHOC_STATE))
 212                 return false;
 213
 214         return true;
 215 }
 216
 217 void rtw_ps_processor(struct adapter *padapter)
 218 {
 219         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 220         struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
 221         enum rt_rf_power_state rfpwrstate;
 222
 223         pwrpriv->ps_processing = true;
 224
 225         if (pwrpriv->bips_processing)
 226                 goto exit;
 227
 228         if (padapter->pwrctrlpriv.bHWPwrPindetect) {
 229                 rfpwrstate = RfOnOffDetect(padapter);
 230                 DBG_88E("@@@@- #2  %s==> rfstate:%s\n", __func__, (rfpwrstate == rf_on) ? "rf_on" : "rf_off");
 231
 232                 if (rfpwrstate != pwrpriv->rf_pwrstate) {
 233                         if (rfpwrstate == rf_off) {
 234                                 pwrpriv->change_rfpwrstate = rf_off;
 235                                 pwrpriv->brfoffbyhw = true;
 236                                 rtw_hw_suspend(padapter);
 237                         } else {
 238                                 pwrpriv->change_rfpwrstate = rf_on;
 239                                 rtw_hw_resume(padapter);
 240                         }
 241                         DBG_88E("current rf_pwrstate(%s)\n", (pwrpriv->rf_pwrstate == rf_off) ? "rf_off" : "rf_on");
 242                 }
 243                 pwrpriv->pwr_state_check_cnts++;
 244         }
 245
 246         if (pwrpriv->ips_mode_req == IPS_NONE)
 247                 goto exit;
 248
 249         if (!rtw_pwr_unassociated_idle(padapter))
 250                 goto exit;
 251
 252         if ((pwrpriv->rf_pwrstate == rf_on) && ((pwrpriv->pwr_state_check_cnts % 4) == 0)) {
 253                 DBG_88E("==>%s .fw_state(%x)\n", __func__, get_fwstate(pmlmepriv));
 254                 pwrpriv->change_rfpwrstate = rf_off;
 255
 256                 ips_enter(padapter);
 257         }
 258 exit:
 259         rtw_set_pwr_state_check_timer(&padapter->pwrctrlpriv);
 260         pwrpriv->ps_processing = false;
 261 }
 262
 263 static void pwr_state_check_handler(struct timer_list *t)
 264 {
 265         struct adapter *padapter =
 266                 from_timer(padapter, t,
 267                            pwrctrlpriv.pwr_state_check_timer);
 268
 269         rtw_ps_cmd(padapter);
 270 }
 271
 272 /*
 273  *
 274  * Parameters
 275  *      padapter
 276  *      pslv                    power state level, only could be PS_STATE_S0 ~ PS_STATE_S4
 277  *
 278  */
 279 void rtw_set_rpwm(struct adapter *padapter, u8 pslv)
 280 {
 281         u8 rpwm;
 282         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 283
 284         pslv = PS_STATE(pslv);
 285
 286         if (pwrpriv->btcoex_rfon) {
 287                 if (pslv < PS_STATE_S4)
 288                         pslv = PS_STATE_S3;
 289         }
 290
 291         if (pwrpriv->rpwm == pslv) {
 292                 RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_err_,
 293                          ("%s: Already set rpwm[0x%02X], new=0x%02X!\n", __func__, pwrpriv->rpwm, pslv));
 294                 return;
 295         }
 296
 297         if ((padapter->bSurpriseRemoved) ||
 298             (!padapter->hw_init_completed)) {
 299                 RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_err_,
 300                          ("%s: SurpriseRemoved(%d) hw_init_completed(%d)\n",
 301                          __func__, padapter->bSurpriseRemoved, padapter->hw_init_completed));
 302
 303                 pwrpriv->cpwm = PS_STATE_S4;
 304
 305                 return;
 306         }
 307
 308         if (padapter->bDriverStopped) {
 309                 RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_err_,
 310                          ("%s: change power state(0x%02X) when DriverStopped\n", __func__, pslv));
 311
 312                 if (pslv < PS_STATE_S2) {
 313                         RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_err_,
 314                                  ("%s: Reject to enter PS_STATE(0x%02X) lower than S2 when DriverStopped!!\n", __func__, pslv));
 315                         return;
 316                 }
 317         }
 318
 319         rpwm = pslv | pwrpriv->tog;
 320         RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_notice_,
 321                  ("%s: rpwm=0x%02x cpwm=0x%02x\n", __func__, rpwm, pwrpriv->cpwm));
 322
 323         pwrpriv->rpwm = pslv;
 324
 325         rtw_hal_set_hwreg(padapter, HW_VAR_SET_RPWM, (u8 *)(&rpwm));
 326
 327         pwrpriv->tog += 0x80;
 328         pwrpriv->cpwm = pslv;
 329 }
 330
 331 static u8 PS_RDY_CHECK(struct adapter *padapter)
 332 {
 333         unsigned long curr_time, delta_time;
 334         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 335         struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
 336
 337         curr_time = jiffies;
 338         delta_time = curr_time - pwrpriv->DelayLPSLastTimeStamp;
 339
 340         if (delta_time < LPS_DELAY_TIME)
 341                 return false;
 342
 343         if ((!check_fwstate(pmlmepriv, _FW_LINKED)) ||
 344             (check_fwstate(pmlmepriv, _FW_UNDER_SURVEY)) ||
 345             (check_fwstate(pmlmepriv, WIFI_AP_STATE)) ||
 346             (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE)) ||
 347             (check_fwstate(pmlmepriv, WIFI_ADHOC_STATE)))
 348                 return false;
 349         if (pwrpriv->bInSuspend)
 350                 return false;
 351         if (padapter->securitypriv.dot11AuthAlgrthm == dot11AuthAlgrthm_8021X &&
 352             !padapter->securitypriv.binstallGrpkey) {
 353                 DBG_88E("Group handshake still in progress !!!\n");
 354                 return false;
 355         }
 356         return true;
 357 }
 358
 359 void rtw_set_ps_mode(struct adapter *padapter, u8 ps_mode, u8 smart_ps, u8 bcn_ant_mode)
 360 {
 361         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 362
 363         RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_notice_,
 364                  ("%s: PowerMode=%d Smart_PS=%d\n",
 365                   __func__, ps_mode, smart_ps));
 366
 367         if (ps_mode > PM_Card_Disable) {
 368                 RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_err_, ("ps_mode:%d error\n", ps_mode));
 369                 return;
 370         }
 371
 372         if (pwrpriv->pwr_mode == ps_mode) {
 373                 if (ps_mode == PS_MODE_ACTIVE)
 374                         return;
 375
 376                 if ((pwrpriv->smart_ps == smart_ps) &&
 377                     (pwrpriv->bcn_ant_mode == bcn_ant_mode))
 378                         return;
 379         }
 380
 381         /* if (pwrpriv->pwr_mode == PS_MODE_ACTIVE) */
 382         if (ps_mode == PS_MODE_ACTIVE) {
 383                 if (PS_RDY_CHECK(padapter)) {
 384                         DBG_88E("%s: Enter 802.11 power save\n", __func__);
 385                         pwrpriv->bFwCurrentInPSMode = true;
 386                         pwrpriv->pwr_mode = ps_mode;
 387                         pwrpriv->smart_ps = smart_ps;
 388                         pwrpriv->bcn_ant_mode = bcn_ant_mode;
 389                         rtw_hal_set_hwreg(padapter, HW_VAR_H2C_FW_PWRMODE, (u8 *)(&ps_mode));
 390                         rtw_set_rpwm(padapter, PS_STATE_S2);
 391                 }
 392         }
 393 }
 394
 395 /*
 396  * Return:
 397  *      0:      Leave OK
 398  *      -1:     Timeout
 399  *      -2:     Other error
 400  */
 401 s32 LPS_RF_ON_check(struct adapter *padapter, u32 delay_ms)
 402 {
 403         unsigned long start_time;
 404         u8 bAwake = false;
 405         s32 err = 0;
 406
 407         start_time = jiffies;
 408         while (1) {
 409                 rtw_hal_get_hwreg(padapter, HW_VAR_FWLPS_RF_ON, &bAwake);
 410                 if (bAwake)
 411                         break;
 412
 413                 if (padapter->bSurpriseRemoved) {
 414                         err = -2;
 415                         DBG_88E("%s: device surprise removed!!\n", __func__);
 416                         break;
 417                 }
 418
 419                 if (jiffies_to_msecs(jiffies - start_time) > delay_ms) {
 420                         err = -1;
 421                         DBG_88E("%s: Wait for FW LPS leave more than %u ms!!!\n", __func__, delay_ms);
 422                         break;
 423                 }
 424                 msleep(1);
 425         }
 426
 427         return err;
 428 }
 429
 430 /*  */
 431 /*      Description: */
 432 /*              Enter the leisure power save mode. */
 433 /*  */
 434 void LPS_Enter(struct adapter *padapter)
 435 {
 436         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 437
 438         if (!PS_RDY_CHECK(padapter))
 439                 return;
 440
 441         if (pwrpriv->bLeisurePs) {
 442                 /*  Idle for a while if we connect to AP a while ago. */
 443                 if (pwrpriv->LpsIdleCount >= 2) { /*   4 Sec */
 444                         if (pwrpriv->pwr_mode == PS_MODE_ACTIVE) {
 445                                 pwrpriv->bpower_saving = true;
 446                                 DBG_88E("%s smart_ps:%d\n", __func__, pwrpriv->smart_ps);
 447                                 /* For Tenda W311R IOT issue */
 448                                 rtw_set_ps_mode(padapter, pwrpriv->power_mgnt, pwrpriv->smart_ps, 0);
 449                         }
 450                 } else {
 451                         pwrpriv->LpsIdleCount++;
 452                 }
 453         }
 454 }
 455
 456 #define LPS_LEAVE_TIMEOUT_MS 100
 457
 458 /*      Description: */
 459 /*              Leave the leisure power save mode. */
 460 void LPS_Leave(struct adapter *padapter)
 461 {
 462         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 463
 464         if (pwrpriv->bLeisurePs) {
 465                 if (pwrpriv->pwr_mode != PS_MODE_ACTIVE) {
 466                         rtw_set_ps_mode(padapter, PS_MODE_ACTIVE, 0, 0);
 467
 468                         if (pwrpriv->pwr_mode == PS_MODE_ACTIVE)
 469                                 LPS_RF_ON_check(padapter, LPS_LEAVE_TIMEOUT_MS);
 470                 }
 471         }
 472
 473         pwrpriv->bpower_saving = false;
 474 }
 475
 476 /*  */
 477 /*  Description: Leave all power save mode: LPS, FwLPS, IPS if needed. */
 478 /*  Move code to function by tynli. 2010.03.26. */
 479 /*  */
 480 void LeaveAllPowerSaveMode(struct adapter *Adapter)
 481 {
 482         struct mlme_priv *pmlmepriv = &Adapter->mlmepriv;
 483         u8 enqueue = 0;
 484
 485         if (check_fwstate(pmlmepriv, _FW_LINKED))
 486                 rtw_lps_ctrl_wk_cmd(Adapter, LPS_CTRL_LEAVE, enqueue);
 487 }
 488
 489 void rtw_init_pwrctrl_priv(struct adapter *padapter)
 490 {
 491         struct pwrctrl_priv *pwrctrlpriv = &padapter->pwrctrlpriv;
 492
 493         mutex_init(&pwrctrlpriv->mutex_lock);
 494         pwrctrlpriv->rf_pwrstate = rf_on;
 495         pwrctrlpriv->ips_enter_cnts = 0;
 496         pwrctrlpriv->ips_leave_cnts = 0;
 497         pwrctrlpriv->bips_processing = false;
 498
 499         pwrctrlpriv->ips_mode = padapter->registrypriv.ips_mode;
 500         pwrctrlpriv->ips_mode_req = padapter->registrypriv.ips_mode;
 501
 502         pwrctrlpriv->pwr_state_check_interval = RTW_PWR_STATE_CHK_INTERVAL;
 503         pwrctrlpriv->pwr_state_check_cnts = 0;
 504         pwrctrlpriv->bInternalAutoSuspend = false;
 505         pwrctrlpriv->bInSuspend = false;
 506         pwrctrlpriv->bkeepfwalive = false;
 507
 508         pwrctrlpriv->LpsIdleCount = 0;
 509         if (padapter->registrypriv.mp_mode == 1)
 510                 pwrctrlpriv->power_mgnt = PS_MODE_ACTIVE;
 511         else
 512                 pwrctrlpriv->power_mgnt = padapter->registrypriv.power_mgnt;/*  PS_MODE_MIN; */
 513         pwrctrlpriv->bLeisurePs = (pwrctrlpriv->power_mgnt != PS_MODE_ACTIVE);
 514
 515         pwrctrlpriv->bFwCurrentInPSMode = false;
 516
 517         pwrctrlpriv->rpwm = 0;
 518         pwrctrlpriv->cpwm = PS_STATE_S4;
 519
 520         pwrctrlpriv->pwr_mode = PS_MODE_ACTIVE;
 521         pwrctrlpriv->smart_ps = padapter->registrypriv.smart_ps;
 522         pwrctrlpriv->bcn_ant_mode = 0;
 523
 524         pwrctrlpriv->tog = 0x80;
 525
 526         pwrctrlpriv->btcoex_rfon = false;
 527
 528         timer_setup(&pwrctrlpriv->pwr_state_check_timer,
 529                     pwr_state_check_handler, 0);
 530 }
 531
 532 /*
 533  * rtw_pwr_wakeup - Wake the NIC up from: 1)IPS. 2)USB autosuspend
 534  * @adapter: pointer to struct adapter structure
 535  * @ips_deffer_ms: the ms will prevent from falling into IPS after wakeup
 536  * Return _SUCCESS or _FAIL
 537  */
 538
 539 int _rtw_pwr_wakeup(struct adapter *padapter, u32 ips_deffer_ms, const char *caller)
 540 {
 541         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 542         struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
 543         unsigned long expires;
 544         unsigned long start;
 545         int ret = _SUCCESS;
 546
 547         expires = jiffies + msecs_to_jiffies(ips_deffer_ms);
 548         if (time_before(pwrpriv->ips_deny_time, expires))
 549                 pwrpriv->ips_deny_time = jiffies + msecs_to_jiffies(ips_deffer_ms);
 550
 551         start = jiffies;
 552         if (pwrpriv->ps_processing) {
 553                 DBG_88E("%s wait ps_processing...\n", __func__);
 554                 while (pwrpriv->ps_processing &&
 555                        jiffies_to_msecs(jiffies - start) <= 3000)
 556                         udelay(1500);
 557                 if (pwrpriv->ps_processing)
 558                         DBG_88E("%s wait ps_processing timeout\n", __func__);
 559                 else
 560                         DBG_88E("%s wait ps_processing done\n", __func__);
 561         }
 562
 563         /* System suspend is not allowed to wakeup */
 564         if ((!pwrpriv->bInternalAutoSuspend) && (pwrpriv->bInSuspend)) {
 565                 ret = _FAIL;
 566                 goto exit;
 567         }
 568
 569         /* block??? */
 570         if ((pwrpriv->bInternalAutoSuspend)  && (padapter->net_closed)) {
 571                 ret = _FAIL;
 572                 goto exit;
 573         }
 574
 575         /* I think this should be check in IPS, LPS, autosuspend functions... */
 576         if (check_fwstate(pmlmepriv, _FW_LINKED)) {
 577                 ret = _SUCCESS;
 578                 goto exit;
 579         }
 580         if (rf_off == pwrpriv->rf_pwrstate) {
 581                 DBG_88E("%s call ips_leave....\n", __func__);
 582                 if (ips_leave(padapter) ==  _FAIL) {
 583                         DBG_88E("======> ips_leave fail.............\n");
 584                         ret = _FAIL;
 585                         goto exit;
 586                 }
 587         }
 588
 589         /* TODO: the following checking need to be merged... */
 590         if (padapter->bDriverStopped || !padapter->bup ||
 591             !padapter->hw_init_completed) {
 592                 DBG_88E("%s: bDriverStopped=%d, bup=%d, hw_init_completed =%u\n"
 593                         , caller
 594                         , padapter->bDriverStopped
 595                         , padapter->bup
 596                         , padapter->hw_init_completed);
 597                 ret = false;
 598                 goto exit;
 599         }
 600
 601 exit:
 602         expires = jiffies + msecs_to_jiffies(ips_deffer_ms);
 603         if (time_before(pwrpriv->ips_deny_time, expires))
 604                 pwrpriv->ips_deny_time = jiffies + msecs_to_jiffies(ips_deffer_ms);
 605         return ret;
 606 }
 607
 608 int rtw_pm_set_lps(struct adapter *padapter, u8 mode)
 609 {
 610         int ret = 0;
 611         struct pwrctrl_priv *pwrctrlpriv = &padapter->pwrctrlpriv;
 612
 613         if (mode < PS_MODE_NUM) {
 614                 if (pwrctrlpriv->power_mgnt != mode) {
 615                         if (mode == PS_MODE_ACTIVE)
 616                                 LeaveAllPowerSaveMode(padapter);
 617                         else
 618                                 pwrctrlpriv->LpsIdleCount = 2;
 619                         pwrctrlpriv->power_mgnt = mode;
 620                         pwrctrlpriv->bLeisurePs = (pwrctrlpriv->power_mgnt != PS_MODE_ACTIVE);
 621                 }
 622         } else {
 623                 ret = -EINVAL;
 624         }
 625
 626         return ret;
 627 }
 628
 629 int rtw_pm_set_ips(struct adapter *padapter, u8 mode)
 630 {
 631         struct pwrctrl_priv *pwrctrlpriv = &padapter->pwrctrlpriv;
 632
 633         if (mode == IPS_NORMAL || mode == IPS_LEVEL_2) {
 634                 rtw_ips_mode_req(pwrctrlpriv, mode);
 635                 DBG_88E("%s %s\n", __func__, mode == IPS_NORMAL ? "IPS_NORMAL" : "IPS_LEVEL_2");
 636                 return 0;
 637         } else if (mode == IPS_NONE) {
 638                 rtw_ips_mode_req(pwrctrlpriv, mode);
 639                 DBG_88E("%s %s\n", __func__, "IPS_NONE");
 640                 if ((padapter->bSurpriseRemoved == 0) && (rtw_pwr_wakeup(padapter) == _FAIL))
 641                         return -EFAULT;
 642         } else {
 643                 return -EINVAL;
 644         }
 645         return 0;
 646 }