Pileus Git - ~andy/linux/blob - 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 (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 _func_enter_;
 230
 231         pslv = PS_STATE(pslv);
 232
 233
 234         if (pwrpriv->btcoex_rfon) {
 235                 if (pslv < PS_STATE_S4)
 236                         pslv = PS_STATE_S3;
 237         }
 238
 239         if ((pwrpriv->rpwm == pslv)) {
 240                 RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_err_,
 241                          ("%s: Already set rpwm[0x%02X], new=0x%02X!\n", __func__, pwrpriv->rpwm, pslv));
 242                 return;
 243         }
 244
 245         if ((padapter->bSurpriseRemoved) ||
 246             (!padapter->hw_init_completed)) {
 247                 RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_err_,
 248                          ("%s: SurpriseRemoved(%d) hw_init_completed(%d)\n",
 249                          __func__, padapter->bSurpriseRemoved, padapter->hw_init_completed));
 250
 251                 pwrpriv->cpwm = PS_STATE_S4;
 252
 253                 return;
 254         }
 255
 256         if (padapter->bDriverStopped) {
 257                 RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_err_,
 258                          ("%s: change power state(0x%02X) when DriverStopped\n", __func__, pslv));
 259
 260                 if (pslv < PS_STATE_S2) {
 261                         RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_err_,
 262                                  ("%s: Reject to enter PS_STATE(0x%02X) lower than S2 when DriverStopped!!\n", __func__, pslv));
 263                         return;
 264                 }
 265         }
 266
 267         rpwm = pslv | pwrpriv->tog;
 268         RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_notice_,
 269                  ("rtw_set_rpwm: rpwm=0x%02x cpwm=0x%02x\n", rpwm, pwrpriv->cpwm));
 270
 271         pwrpriv->rpwm = pslv;
 272
 273         rtw_hal_set_hwreg(padapter, HW_VAR_SET_RPWM, (u8 *)(&rpwm));
 274
 275         pwrpriv->tog += 0x80;
 276         pwrpriv->cpwm = pslv;
 277
 278 _func_exit_;
 279 }
 280
 281 static u8 PS_RDY_CHECK(struct adapter *padapter)
 282 {
 283         u32 curr_time, delta_time;
 284         struct pwrctrl_priv     *pwrpriv = &padapter->pwrctrlpriv;
 285         struct mlme_priv        *pmlmepriv = &(padapter->mlmepriv);
 286
 287
 288         curr_time = jiffies;
 289         delta_time = curr_time - pwrpriv->DelayLPSLastTimeStamp;
 290
 291         if (delta_time < LPS_DELAY_TIME)
 292                 return false;
 293
 294         if ((check_fwstate(pmlmepriv, _FW_LINKED) == false) ||
 295             (check_fwstate(pmlmepriv, _FW_UNDER_SURVEY)) ||
 296             (check_fwstate(pmlmepriv, WIFI_AP_STATE)) ||
 297             (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE)) ||
 298             (check_fwstate(pmlmepriv, WIFI_ADHOC_STATE)))
 299                 return false;
 300         if (pwrpriv->bInSuspend)
 301                 return false;
 302         if ((padapter->securitypriv.dot11AuthAlgrthm == dot11AuthAlgrthm_8021X) && (padapter->securitypriv.binstallGrpkey == false)) {
 303                 DBG_88E("Group handshake still in progress !!!\n");
 304                 return false;
 305         }
 306         return true;
 307 }
 308
 309 void rtw_set_ps_mode(struct adapter *padapter, u8 ps_mode, u8 smart_ps, u8 bcn_ant_mode)
 310 {
 311         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 312 #ifdef CONFIG_88EU_P2P
 313         struct wifidirect_info  *pwdinfo = &(padapter->wdinfo);
 314 #endif /* CONFIG_88EU_P2P */
 315
 316 _func_enter_;
 317
 318         RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_notice_,
 319                  ("%s: PowerMode=%d Smart_PS=%d\n",
 320                   __func__, ps_mode, smart_ps));
 321
 322         if (ps_mode > PM_Card_Disable) {
 323                 RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_err_, ("ps_mode:%d error\n", ps_mode));
 324                 return;
 325         }
 326
 327         if (pwrpriv->pwr_mode == ps_mode) {
 328                 if (PS_MODE_ACTIVE == ps_mode)
 329                         return;
 330
 331                 if ((pwrpriv->smart_ps == smart_ps) &&
 332                     (pwrpriv->bcn_ant_mode == bcn_ant_mode))
 333                         return;
 334         }
 335
 336         /* if (pwrpriv->pwr_mode == PS_MODE_ACTIVE) */
 337         if (ps_mode == PS_MODE_ACTIVE) {
 338 #ifdef CONFIG_88EU_P2P
 339                 if (pwdinfo->opp_ps == 0) {
 340                         DBG_88E("rtw_set_ps_mode: Leave 802.11 power save\n");
 341                         pwrpriv->pwr_mode = ps_mode;
 342                         rtw_set_rpwm(padapter, PS_STATE_S4);
 343                         rtw_hal_set_hwreg(padapter, HW_VAR_H2C_FW_PWRMODE, (u8 *)(&ps_mode));
 344                         pwrpriv->bFwCurrentInPSMode = false;
 345                 }
 346         } else {
 347 #endif /* CONFIG_88EU_P2P */
 348                 if (PS_RDY_CHECK(padapter)) {
 349                         DBG_88E("%s: Enter 802.11 power save\n", __func__);
 350                         pwrpriv->bFwCurrentInPSMode = true;
 351                         pwrpriv->pwr_mode = ps_mode;
 352                         pwrpriv->smart_ps = smart_ps;
 353                         pwrpriv->bcn_ant_mode = bcn_ant_mode;
 354                         rtw_hal_set_hwreg(padapter, HW_VAR_H2C_FW_PWRMODE, (u8 *)(&ps_mode));
 355
 356 #ifdef CONFIG_88EU_P2P
 357                         /*  Set CTWindow after LPS */
 358                         if (pwdinfo->opp_ps == 1)
 359                                 p2p_ps_wk_cmd(padapter, P2P_PS_ENABLE, 0);
 360 #endif /* CONFIG_88EU_P2P */
 361
 362                         rtw_set_rpwm(padapter, PS_STATE_S2);
 363                 }
 364         }
 365
 366 _func_exit_;
 367 }
 368
 369 /*
 370  * Return:
 371  *      0:      Leave OK
 372  *      -1:     Timeout
 373  *      -2:     Other error
 374  */
 375 s32 LPS_RF_ON_check(struct adapter *padapter, u32 delay_ms)
 376 {
 377         u32 start_time;
 378         u8 bAwake = false;
 379         s32 err = 0;
 380
 381
 382         start_time = jiffies;
 383         while (1) {
 384                 rtw_hal_get_hwreg(padapter, HW_VAR_FWLPS_RF_ON, &bAwake);
 385                 if (bAwake)
 386                         break;
 387
 388                 if (padapter->bSurpriseRemoved) {
 389                         err = -2;
 390                         DBG_88E("%s: device surprise removed!!\n", __func__);
 391                         break;
 392                 }
 393
 394                 if (rtw_get_passing_time_ms(start_time) > delay_ms) {
 395                         err = -1;
 396                         DBG_88E("%s: Wait for FW LPS leave more than %u ms!!!\n", __func__, delay_ms);
 397                         break;
 398                 }
 399                 msleep(1);
 400         }
 401
 402         return err;
 403 }
 404
 405 /*  */
 406 /*      Description: */
 407 /*              Enter the leisure power save mode. */
 408 /*  */
 409 void LPS_Enter(struct adapter *padapter)
 410 {
 411         struct pwrctrl_priv     *pwrpriv = &padapter->pwrctrlpriv;
 412
 413 _func_enter_;
 414
 415         if (PS_RDY_CHECK(padapter) == false)
 416                 return;
 417
 418         if (pwrpriv->bLeisurePs) {
 419                 /*  Idle for a while if we connect to AP a while ago. */
 420                 if (pwrpriv->LpsIdleCount >= 2) { /*   4 Sec */
 421                         if (pwrpriv->pwr_mode == PS_MODE_ACTIVE) {
 422                                 pwrpriv->bpower_saving = true;
 423                                 DBG_88E("%s smart_ps:%d\n", __func__, pwrpriv->smart_ps);
 424                                 /* For Tenda W311R IOT issue */
 425                                 rtw_set_ps_mode(padapter, pwrpriv->power_mgnt, pwrpriv->smart_ps, 0);
 426                         }
 427                 } else {
 428                         pwrpriv->LpsIdleCount++;
 429                 }
 430         }
 431
 432 _func_exit_;
 433 }
 434
 435 #define LPS_LEAVE_TIMEOUT_MS 100
 436
 437 /*      Description: */
 438 /*              Leave the leisure power save mode. */
 439 void LPS_Leave(struct adapter *padapter)
 440 {
 441         struct pwrctrl_priv     *pwrpriv = &padapter->pwrctrlpriv;
 442
 443 _func_enter_;
 444
 445         if (pwrpriv->bLeisurePs) {
 446                 if (pwrpriv->pwr_mode != PS_MODE_ACTIVE) {
 447                         rtw_set_ps_mode(padapter, PS_MODE_ACTIVE, 0, 0);
 448
 449                         if (pwrpriv->pwr_mode == PS_MODE_ACTIVE)
 450                                 LPS_RF_ON_check(padapter, LPS_LEAVE_TIMEOUT_MS);
 451                 }
 452         }
 453
 454         pwrpriv->bpower_saving = false;
 455
 456 _func_exit_;
 457 }
 458
 459 /*  */
 460 /*  Description: Leave all power save mode: LPS, FwLPS, IPS if needed. */
 461 /*  Move code to function by tynli. 2010.03.26. */
 462 /*  */
 463 void LeaveAllPowerSaveMode(struct adapter *Adapter)
 464 {
 465         struct mlme_priv        *pmlmepriv = &(Adapter->mlmepriv);
 466         u8      enqueue = 0;
 467
 468 _func_enter_;
 469
 470         if (check_fwstate(pmlmepriv, _FW_LINKED)) { /* connect */
 471                 p2p_ps_wk_cmd(Adapter, P2P_PS_DISABLE, enqueue);
 472
 473                 rtw_lps_ctrl_wk_cmd(Adapter, LPS_CTRL_LEAVE, enqueue);
 474         }
 475
 476 _func_exit_;
 477 }
 478
 479 void rtw_init_pwrctrl_priv(struct adapter *padapter)
 480 {
 481         struct pwrctrl_priv *pwrctrlpriv = &padapter->pwrctrlpriv;
 482
 483 _func_enter_;
 484
 485         _init_pwrlock(&pwrctrlpriv->lock);
 486         pwrctrlpriv->rf_pwrstate = rf_on;
 487         pwrctrlpriv->ips_enter_cnts = 0;
 488         pwrctrlpriv->ips_leave_cnts = 0;
 489         pwrctrlpriv->bips_processing = false;
 490
 491         pwrctrlpriv->ips_mode = padapter->registrypriv.ips_mode;
 492         pwrctrlpriv->ips_mode_req = padapter->registrypriv.ips_mode;
 493
 494         pwrctrlpriv->pwr_state_check_interval = RTW_PWR_STATE_CHK_INTERVAL;
 495         pwrctrlpriv->pwr_state_check_cnts = 0;
 496         pwrctrlpriv->bInternalAutoSuspend = false;
 497         pwrctrlpriv->bInSuspend = false;
 498         pwrctrlpriv->bkeepfwalive = false;
 499
 500         pwrctrlpriv->LpsIdleCount = 0;
 501         if (padapter->registrypriv.mp_mode == 1)
 502                 pwrctrlpriv->power_mgnt = PS_MODE_ACTIVE ;
 503         else
 504                 pwrctrlpriv->power_mgnt = padapter->registrypriv.power_mgnt;/*  PS_MODE_MIN; */
 505         pwrctrlpriv->bLeisurePs = (PS_MODE_ACTIVE != pwrctrlpriv->power_mgnt) ? true : false;
 506
 507         pwrctrlpriv->bFwCurrentInPSMode = false;
 508
 509         pwrctrlpriv->rpwm = 0;
 510         pwrctrlpriv->cpwm = PS_STATE_S4;
 511
 512         pwrctrlpriv->pwr_mode = PS_MODE_ACTIVE;
 513         pwrctrlpriv->smart_ps = padapter->registrypriv.smart_ps;
 514         pwrctrlpriv->bcn_ant_mode = 0;
 515
 516         pwrctrlpriv->tog = 0x80;
 517
 518         pwrctrlpriv->btcoex_rfon = false;
 519
 520         _init_timer(&(pwrctrlpriv->pwr_state_check_timer), padapter->pnetdev, pwr_state_check_handler, (u8 *)padapter);
 521
 522 _func_exit_;
 523 }
 524
 525 u8 rtw_interface_ps_func(struct adapter *padapter, enum hal_intf_ps_func efunc_id, u8 *val)
 526 {
 527         u8 bResult = true;
 528         rtw_hal_intf_ps_func(padapter, efunc_id, val);
 529
 530         return bResult;
 531 }
 532
 533
 534 inline void rtw_set_ips_deny(struct adapter *padapter, u32 ms)
 535 {
 536         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 537         pwrpriv->ips_deny_time = jiffies + rtw_ms_to_systime(ms);
 538 }
 539
 540 /*
 541 * rtw_pwr_wakeup - Wake the NIC up from: 1)IPS. 2)USB autosuspend
 542 * @adapter: pointer to struct adapter structure
 543 * @ips_deffer_ms: the ms wiil prevent from falling into IPS after wakeup
 544 * Return _SUCCESS or _FAIL
 545 */
 546
 547 int _rtw_pwr_wakeup(struct adapter *padapter, u32 ips_deffer_ms, const char *caller)
 548 {
 549         struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
 550         struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
 551         int ret = _SUCCESS;
 552
 553         if (pwrpriv->ips_deny_time < jiffies + rtw_ms_to_systime(ips_deffer_ms))
 554                 pwrpriv->ips_deny_time = jiffies + rtw_ms_to_systime(ips_deffer_ms);
 555
 556 {
 557         u32 start = jiffies;
 558         if (pwrpriv->ps_processing) {
 559                 DBG_88E("%s wait ps_processing...\n", __func__);
 560                 while (pwrpriv->ps_processing && rtw_get_passing_time_ms(start) <= 3000)
 561                         msleep(10);
 562                 if (pwrpriv->ps_processing)
 563                         DBG_88E("%s wait ps_processing timeout\n", __func__);
 564                 else
 565                         DBG_88E("%s wait ps_processing done\n", __func__);
 566         }
 567 }
 568
 569         /* System suspend is not allowed to wakeup */
 570         if ((!pwrpriv->bInternalAutoSuspend) && (pwrpriv->bInSuspend)) {
 571                 ret = _FAIL;
 572                 goto exit;
 573         }
 574
 575         /* block??? */
 576         if ((pwrpriv->bInternalAutoSuspend)  && (padapter->net_closed)) {
 577                 ret = _FAIL;
 578                 goto exit;
 579         }
 580
 581         /* I think this should be check in IPS, LPS, autosuspend functions... */
 582         if (check_fwstate(pmlmepriv, _FW_LINKED)) {
 583                 ret = _SUCCESS;
 584                 goto exit;
 585         }
 586         if (rf_off == pwrpriv->rf_pwrstate) {
 587                 DBG_88E("%s call ips_leave....\n", __func__);
 588                 if (_FAIL ==  ips_leave(padapter)) {
 589                         DBG_88E("======> ips_leave fail.............\n");
 590                         ret = _FAIL;
 591                         goto exit;
 592                 }
 593         }
 594
 595         /* TODO: the following checking need to be merged... */
 596         if (padapter->bDriverStopped || !padapter->bup ||
 597             !padapter->hw_init_completed) {
 598                 DBG_88E("%s: bDriverStopped=%d, bup=%d, hw_init_completed =%u\n"
 599                         , caller
 600                         , padapter->bDriverStopped
 601                         , padapter->bup
 602                         , padapter->hw_init_completed);
 603                 ret = false;
 604                 goto exit;
 605         }
 606
 607 exit:
 608         if (pwrpriv->ips_deny_time < jiffies + rtw_ms_to_systime(ips_deffer_ms))
 609                 pwrpriv->ips_deny_time = jiffies + rtw_ms_to_systime(ips_deffer_ms);
 610         return ret;
 611 }
 612
 613 int rtw_pm_set_lps(struct adapter *padapter, u8 mode)
 614 {
 615         int     ret = 0;
 616         struct pwrctrl_priv *pwrctrlpriv = &padapter->pwrctrlpriv;
 617
 618         if (mode < PS_MODE_NUM) {
 619                 if (pwrctrlpriv->power_mgnt != mode) {
 620                         if (PS_MODE_ACTIVE == mode)
 621                                 LeaveAllPowerSaveMode(padapter);
 622                         else
 623                                 pwrctrlpriv->LpsIdleCount = 2;
 624                         pwrctrlpriv->power_mgnt = mode;
 625                         pwrctrlpriv->bLeisurePs = (PS_MODE_ACTIVE != pwrctrlpriv->power_mgnt) ? true : false;
 626                 }
 627         } else {
 628                 ret = -EINVAL;
 629         }
 630
 631         return ret;
 632 }
 633
 634 int rtw_pm_set_ips(struct adapter *padapter, u8 mode)
 635 {
 636         struct pwrctrl_priv *pwrctrlpriv = &padapter->pwrctrlpriv;
 637
 638         if (mode == IPS_NORMAL || mode == IPS_LEVEL_2) {
 639                 rtw_ips_mode_req(pwrctrlpriv, mode);
 640                 DBG_88E("%s %s\n", __func__, mode == IPS_NORMAL ? "IPS_NORMAL" : "IPS_LEVEL_2");
 641                 return 0;
 642         } else if (mode == IPS_NONE) {
 643                 rtw_ips_mode_req(pwrctrlpriv, mode);
 644                 DBG_88E("%s %s\n", __func__, "IPS_NONE");
 645                 if ((padapter->bSurpriseRemoved == 0) && (_FAIL == rtw_pwr_wakeup(padapter)))
 646                         return -EFAULT;
 647         } else {
 648                 return -EINVAL;
 649         }
 650         return 0;
 651 }