Cregit: Linux 5.8: rtw

Contributors: 13
Author	Tokens	Token Proportion	Commits	Commit Proportion
Hans de Goede	5588	97.50%	1	5.00%
Nishka Dasgupta	43	0.75%	7	35.00%
Kees Cook	43	0.75%	1	5.00%
Arnd Bergmann	41	0.72%	2	10.00%
Aastha Gupta	4	0.07%	1	5.00%
Icenowy Zheng	2	0.03%	1	5.00%
Rasmus Villemoes	2	0.03%	1	5.00%
Nathan Chancellor	2	0.03%	1	5.00%
Jia-Ju Bai	2	0.03%	1	5.00%
Jeeeun Evans	1	0.02%	1	5.00%
Thomas Avery	1	0.02%	1	5.00%
Payal Kshirsagar	1	0.02%	1	5.00%
R Veera Kumar	1	0.02%	1	5.00%
Total	5731		20
// SPDX-License-Identifier: GPL-2.0
/******************************************************************************
 *
 * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
 *
 ******************************************************************************/
#define _RTW_PWRCTRL_C_

#include <drv_types.h>
#include <rtw_debug.h>
#include <hal_data.h>
#include <linux/jiffies.h>


void _ips_enter(struct adapter *padapter)
{
	struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);

	pwrpriv->bips_processing = true;

	/*  syn ips_mode with request */
	pwrpriv->ips_mode = pwrpriv->ips_mode_req;

	pwrpriv->ips_enter_cnts++;
	DBG_871X("==>ips_enter cnts:%d\n", pwrpriv->ips_enter_cnts);

	if (rf_off == pwrpriv->change_rfpwrstate) {
		pwrpriv->bpower_saving = true;
		DBG_871X("nolinked power save enter\n");

		if (pwrpriv->ips_mode == IPS_LEVEL_2)
			pwrpriv->bkeepfwalive = true;

		rtw_ips_pwr_down(padapter);
		pwrpriv->rf_pwrstate = rf_off;
	}
	pwrpriv->bips_processing = false;

}

void ips_enter(struct adapter *padapter)
{
	struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);


	hal_btcoex_IpsNotify(padapter, pwrpriv->ips_mode_req);

	mutex_lock(&pwrpriv->lock);
	_ips_enter(padapter);
	mutex_unlock(&pwrpriv->lock);
}

int _ips_leave(struct adapter *padapter)
{
	struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);
	int result = _SUCCESS;

	if ((pwrpriv->rf_pwrstate == rf_off) && (!pwrpriv->bips_processing)) {
		pwrpriv->bips_processing = true;
		pwrpriv->change_rfpwrstate = rf_on;
		pwrpriv->ips_leave_cnts++;
		DBG_871X("==>ips_leave cnts:%d\n", pwrpriv->ips_leave_cnts);

		result = rtw_ips_pwr_up(padapter);
		if (result == _SUCCESS) {
			pwrpriv->rf_pwrstate = rf_on;
		}
		DBG_871X("nolinked power save leave\n");

		DBG_871X("==> ips_leave.....LED(0x%08x)...\n", rtw_read32(padapter, 0x4c));
		pwrpriv->bips_processing = false;

		pwrpriv->bkeepfwalive = false;
		pwrpriv->bpower_saving = false;
	}

	return result;
}

int ips_leave(struct adapter *padapter)
{
	struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);
	int ret;

	if (!is_primary_adapter(padapter))
		return _SUCCESS;

	mutex_lock(&pwrpriv->lock);
	ret = _ips_leave(padapter);
	mutex_unlock(&pwrpriv->lock);

	if (_SUCCESS == ret)
		hal_btcoex_IpsNotify(padapter, IPS_NONE);

	return ret;
}

static bool rtw_pwr_unassociated_idle(struct adapter *adapter)
{
	struct adapter *buddy = adapter->pbuddy_adapter;
	struct mlme_priv *pmlmepriv = &(adapter->mlmepriv);
	struct xmit_priv *pxmit_priv = &adapter->xmitpriv;

	bool ret = false;

	if (adapter_to_pwrctl(adapter)->bpower_saving) {
		/* DBG_871X("%s: already in LPS or IPS mode\n", __func__); */
		goto exit;
	}

	if (time_before(jiffies, adapter_to_pwrctl(adapter)->ips_deny_time)) {
		/* DBG_871X("%s ips_deny_time\n", __func__); */
		goto exit;
	}

	if (check_fwstate(pmlmepriv, WIFI_ASOC_STATE|WIFI_SITE_MONITOR)
		|| check_fwstate(pmlmepriv, WIFI_UNDER_LINKING|WIFI_UNDER_WPS)
		|| check_fwstate(pmlmepriv, WIFI_AP_STATE)
		|| check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE|WIFI_ADHOC_STATE)
	)
		goto exit;

	/* consider buddy, if exist */
	if (buddy) {
		struct mlme_priv *b_pmlmepriv = &(buddy->mlmepriv);

		if (check_fwstate(b_pmlmepriv, WIFI_ASOC_STATE|WIFI_SITE_MONITOR)
			|| check_fwstate(b_pmlmepriv, WIFI_UNDER_LINKING|WIFI_UNDER_WPS)
			|| check_fwstate(b_pmlmepriv, WIFI_AP_STATE)
			|| check_fwstate(b_pmlmepriv, WIFI_ADHOC_MASTER_STATE|WIFI_ADHOC_STATE)
		)
			goto exit;
	}

	if (pxmit_priv->free_xmitbuf_cnt != NR_XMITBUFF ||
		pxmit_priv->free_xmit_extbuf_cnt != NR_XMIT_EXTBUFF) {
		DBG_871X_LEVEL(_drv_always_, "There are some pkts to transmit\n");
		DBG_871X_LEVEL(_drv_always_, "free_xmitbuf_cnt: %d, free_xmit_extbuf_cnt: %d\n",
			pxmit_priv->free_xmitbuf_cnt, pxmit_priv->free_xmit_extbuf_cnt);
		goto exit;
	}

	ret = true;

exit:
	return ret;
}


/*
 * ATTENTION:
 *rtw_ps_processor() doesn't handle LPS.
 */
void rtw_ps_processor(struct adapter *padapter)
{
	struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);
	struct dvobj_priv *psdpriv = padapter->dvobj;
	struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
	u32 ps_deny = 0;

	mutex_lock(&adapter_to_pwrctl(padapter)->lock);
	ps_deny = rtw_ps_deny_get(padapter);
	mutex_unlock(&adapter_to_pwrctl(padapter)->lock);
	if (ps_deny != 0) {
		DBG_871X(FUNC_ADPT_FMT ": ps_deny = 0x%08X, skip power save!\n",
			FUNC_ADPT_ARG(padapter), ps_deny);
		goto exit;
	}

	if (pwrpriv->bInSuspend) {/* system suspend or autosuspend */
		pdbgpriv->dbg_ps_insuspend_cnt++;
		DBG_871X("%s, pwrpriv->bInSuspend == true ignore this process\n", __func__);
		return;
	}

	pwrpriv->ps_processing = true;

	if (pwrpriv->ips_mode_req == IPS_NONE)
		goto exit;

	if (!rtw_pwr_unassociated_idle(padapter))
		goto exit;

	if ((pwrpriv->rf_pwrstate == rf_on) && ((pwrpriv->pwr_state_check_cnts%4) == 0)) {
		DBG_871X("==>%s\n", __func__);
		pwrpriv->change_rfpwrstate = rf_off;
		{
			ips_enter(padapter);
		}
	}
exit:
	pwrpriv->ps_processing = false;
}

static void pwr_state_check_handler(struct timer_list *t)
{
	struct pwrctrl_priv *pwrctrlpriv =
		from_timer(pwrctrlpriv, t, pwr_state_check_timer);
	struct adapter *padapter = pwrctrlpriv->adapter;

	rtw_ps_cmd(padapter);
}

void traffic_check_for_leave_lps(struct adapter *padapter, u8 tx, u32 tx_packets)
{
	static unsigned long start_time;
	static u32 xmit_cnt;
	u8 bLeaveLPS = false;
	struct mlme_priv *pmlmepriv = &padapter->mlmepriv;



	if (tx) { /* from tx */
		xmit_cnt += tx_packets;

		if (start_time == 0)
			start_time = jiffies;

		if (jiffies_to_msecs(jiffies - start_time) > 2000) { /*  2 sec == watch dog timer */
			if (xmit_cnt > 8) {
				if (adapter_to_pwrctl(padapter)->bLeisurePs
				    && (adapter_to_pwrctl(padapter)->pwr_mode != PS_MODE_ACTIVE)
				    && !(hal_btcoex_IsBtControlLps(padapter))) {
					DBG_871X("leave lps via Tx = %d\n", xmit_cnt);
					bLeaveLPS = true;
				}
			}

			start_time = jiffies;
			xmit_cnt = 0;
		}

	} else { /*  from rx path */
		if (pmlmepriv->LinkDetectInfo.NumRxUnicastOkInPeriod > 4/*2*/) {
			if (adapter_to_pwrctl(padapter)->bLeisurePs
			    && (adapter_to_pwrctl(padapter)->pwr_mode != PS_MODE_ACTIVE)
			    && !(hal_btcoex_IsBtControlLps(padapter))) {
				DBG_871X("leave lps via Rx = %d\n", pmlmepriv->LinkDetectInfo.NumRxUnicastOkInPeriod);
				bLeaveLPS = true;
			}
		}
	}

	if (bLeaveLPS)
		/* DBG_871X("leave lps via %s, Tx = %d, Rx = %d\n", tx?"Tx":"Rx", pmlmepriv->LinkDetectInfo.NumTxOkInPeriod, pmlmepriv->LinkDetectInfo.NumRxUnicastOkInPeriod); */
		/* rtw_lps_ctrl_wk_cmd(padapter, LPS_CTRL_LEAVE, 1); */
		rtw_lps_ctrl_wk_cmd(padapter, LPS_CTRL_LEAVE, tx?0:1);
}

/*
 * Description:
 *This function MUST be called under power lock protect
 *
 * Parameters
 *padapter
 *pslv			power state level, only could be PS_STATE_S0 ~ PS_STATE_S4
 *
 */
void rtw_set_rpwm(struct adapter *padapter, u8 pslv)
{
	u8 rpwm;
	struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);
	u8 cpwm_orig;

	pslv = PS_STATE(pslv);

	if (pwrpriv->brpwmtimeout) {
		DBG_871X("%s: RPWM timeout, force to set RPWM(0x%02X) again!\n", __func__, pslv);
	} else {
		if ((pwrpriv->rpwm == pslv)
			|| ((pwrpriv->rpwm >= PS_STATE_S2) && (pslv >= PS_STATE_S2))) {
			RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_err_,
				("%s: Already set rpwm[0x%02X], new = 0x%02X!\n", __func__, pwrpriv->rpwm, pslv));
			return;
		}
	}

	if ((padapter->bSurpriseRemoved) || !(padapter->hw_init_completed)) {
		RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_err_,
				 ("%s: SurpriseRemoved(%d) hw_init_completed(%d)\n",
				  __func__, padapter->bSurpriseRemoved, padapter->hw_init_completed));

		pwrpriv->cpwm = PS_STATE_S4;

		return;
	}

	if (padapter->bDriverStopped) {
		RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_err_,
				 ("%s: change power state(0x%02X) when DriverStopped\n", __func__, pslv));

		if (pslv < PS_STATE_S2) {
			RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_err_,
					 ("%s: Reject to enter PS_STATE(0x%02X) lower than S2 when DriverStopped!!\n", __func__, pslv));
			return;
		}
	}

	rpwm = pslv | pwrpriv->tog;
	/*  only when from PS_STATE S0/S1 to S2 and higher needs ACK */
	if ((pwrpriv->cpwm < PS_STATE_S2) && (pslv >= PS_STATE_S2))
		rpwm |= PS_ACK;
	RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_notice_,
			 ("rtw_set_rpwm: rpwm = 0x%02x cpwm = 0x%02x\n", rpwm, pwrpriv->cpwm));

	pwrpriv->rpwm = pslv;

	cpwm_orig = 0;
	if (rpwm & PS_ACK)
		rtw_hal_get_hwreg(padapter, HW_VAR_CPWM, &cpwm_orig);

	if (rpwm & PS_ACK)
		_set_timer(&pwrpriv->pwr_rpwm_timer, LPS_RPWM_WAIT_MS);
	rtw_hal_set_hwreg(padapter, HW_VAR_SET_RPWM, (u8 *)(&rpwm));

	pwrpriv->tog += 0x80;

	/*  No LPS 32K, No Ack */
	if (rpwm & PS_ACK) {
		unsigned long start_time;
		u8 cpwm_now;
		u8 poll_cnt = 0;

		start_time = jiffies;

		/*  polling cpwm */
		do {
			mdelay(1);
			poll_cnt++;
			rtw_hal_get_hwreg(padapter, HW_VAR_CPWM, &cpwm_now);
			if ((cpwm_orig ^ cpwm_now) & 0x80) {
				pwrpriv->cpwm = PS_STATE_S4;
				pwrpriv->cpwm_tog = cpwm_now & PS_TOGGLE;
				break;
			}

			if (jiffies_to_msecs(jiffies - start_time) > LPS_RPWM_WAIT_MS) {
				DBG_871X("%s: polling cpwm timeout! poll_cnt =%d, cpwm_orig =%02x, cpwm_now =%02x\n", __func__, poll_cnt, cpwm_orig, cpwm_now);
				_set_timer(&pwrpriv->pwr_rpwm_timer, 1);
				break;
			}
		} while (1);
	} else
		pwrpriv->cpwm = pslv;
}

static u8 PS_RDY_CHECK(struct adapter *padapter)
{
	unsigned long curr_time, delta_time;
	struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);
	struct mlme_priv *pmlmepriv = &(padapter->mlmepriv);

#if defined(CONFIG_WOWLAN) || defined(CONFIG_AP_WOWLAN)
	if (pwrpriv->bInSuspend && pwrpriv->wowlan_mode)
		return true;
	else if (pwrpriv->bInSuspend && pwrpriv->wowlan_ap_mode)
		return true;
	else if (pwrpriv->bInSuspend)
		return false;
#else
	if (pwrpriv->bInSuspend)
		return false;
#endif

	curr_time = jiffies;

	delta_time = curr_time - pwrpriv->DelayLPSLastTimeStamp;

	if (delta_time < LPS_DELAY_TIME)
		return false;

	if (check_fwstate(pmlmepriv, WIFI_SITE_MONITOR)
		|| check_fwstate(pmlmepriv, WIFI_UNDER_LINKING|WIFI_UNDER_WPS)
		|| check_fwstate(pmlmepriv, WIFI_AP_STATE)
		|| check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE|WIFI_ADHOC_STATE)
		|| rtw_is_scan_deny(padapter)
	)
		return false;

	if ((padapter->securitypriv.dot11AuthAlgrthm == dot11AuthAlgrthm_8021X) && !(padapter->securitypriv.binstallGrpkey)) {
		DBG_871X("Group handshake still in progress !!!\n");
		return false;
	}

	if (!rtw_cfg80211_pwr_mgmt(padapter))
		return false;

	return true;
}

void rtw_set_ps_mode(struct adapter *padapter, u8 ps_mode, u8 smart_ps, u8 bcn_ant_mode, const char *msg)
{
	struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);
#if defined(CONFIG_WOWLAN) || defined(CONFIG_AP_WOWLAN)
	struct debug_priv *pdbgpriv = &padapter->dvobj->drv_dbg;
#endif

	RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_notice_,
			 ("%s: PowerMode =%d Smart_PS =%d\n",
			  __func__, ps_mode, smart_ps));

	if (ps_mode > PM_Card_Disable) {
		RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_err_, ("ps_mode:%d error\n", ps_mode));
		return;
	}

	if (pwrpriv->pwr_mode == ps_mode)
		if (PS_MODE_ACTIVE == ps_mode)
			return;


	mutex_lock(&pwrpriv->lock);

	/* if (pwrpriv->pwr_mode == PS_MODE_ACTIVE) */
	if (ps_mode == PS_MODE_ACTIVE) {
		if (!(hal_btcoex_IsBtControlLps(padapter))
				|| (hal_btcoex_IsBtControlLps(padapter)
					&& !(hal_btcoex_IsLpsOn(padapter)))) {
			DBG_871X(FUNC_ADPT_FMT" Leave 802.11 power save - %s\n",
				FUNC_ADPT_ARG(padapter), msg);

			pwrpriv->pwr_mode = ps_mode;
			rtw_set_rpwm(padapter, PS_STATE_S4);

#if defined(CONFIG_WOWLAN) || defined(CONFIG_AP_WOWLAN)
			if (pwrpriv->wowlan_mode || pwrpriv->wowlan_ap_mode) {
				unsigned long start_time;
				u32 delay_ms;
				u8 val8;
				delay_ms = 20;
				start_time = jiffies;
				do {
					rtw_hal_get_hwreg(padapter, HW_VAR_SYS_CLKR, &val8);
					if (!(val8 & BIT(4))) { /* 0x08 bit4 = 1 --> in 32k, bit4 = 0 --> leave 32k */
						pwrpriv->cpwm = PS_STATE_S4;
						break;
					}
					if (jiffies_to_msecs(jiffies - start_time) > delay_ms) {
						DBG_871X("%s: Wait for FW 32K leave more than %u ms!!!\n",
								__func__, delay_ms);
						pdbgpriv->dbg_wow_leave_ps_fail_cnt++;
						break;
					}
					msleep(1);
				} while (1);
			}
#endif
			rtw_hal_set_hwreg(padapter, HW_VAR_H2C_FW_PWRMODE, (u8 *)(&ps_mode));
			pwrpriv->bFwCurrentInPSMode = false;

			hal_btcoex_LpsNotify(padapter, ps_mode);
		}
	} else {
		if ((PS_RDY_CHECK(padapter) && check_fwstate(&padapter->mlmepriv, WIFI_ASOC_STATE))
			|| ((hal_btcoex_IsBtControlLps(padapter))
				&& (hal_btcoex_IsLpsOn(padapter)))
			) {
			u8 pslv;

			DBG_871X(FUNC_ADPT_FMT" Enter 802.11 power save - %s\n",
				FUNC_ADPT_ARG(padapter), msg);

			hal_btcoex_LpsNotify(padapter, ps_mode);

			pwrpriv->bFwCurrentInPSMode = true;
			pwrpriv->pwr_mode = ps_mode;
			pwrpriv->smart_ps = smart_ps;
			pwrpriv->bcn_ant_mode = bcn_ant_mode;
			rtw_hal_set_hwreg(padapter, HW_VAR_H2C_FW_PWRMODE, (u8 *)(&ps_mode));

			pslv = PS_STATE_S2;
			if (pwrpriv->alives == 0)
				pslv = PS_STATE_S0;

			if (!(hal_btcoex_IsBtDisabled(padapter))
				&& (hal_btcoex_IsBtControlLps(padapter))) {
				u8 val8;

				val8 = hal_btcoex_LpsVal(padapter);
				if (val8 & BIT(4))
					pslv = PS_STATE_S2;
			}

			rtw_set_rpwm(padapter, pslv);
		}
	}

	mutex_unlock(&pwrpriv->lock);
}

/*
 * Return:
 *0:	Leave OK
 *-1:	Timeout
 *-2:	Other error
 */
s32 LPS_RF_ON_check(struct adapter *padapter, u32 delay_ms)
{
	unsigned long start_time;
	u8 bAwake = false;
	s32 err = 0;


	start_time = jiffies;
	while (1) {
		rtw_hal_get_hwreg(padapter, HW_VAR_FWLPS_RF_ON, &bAwake);
		if (bAwake)
			break;

		if (padapter->bSurpriseRemoved) {
			err = -2;
			DBG_871X("%s: device surprise removed!!\n", __func__);
			break;
		}

		if (jiffies_to_msecs(jiffies - start_time) > delay_ms) {
			err = -1;
			DBG_871X("%s: Wait for FW LPS leave more than %u ms!!!\n", __func__, delay_ms);
			break;
		}
		msleep(1);
	}

	return err;
}

/*  */
/* 	Description: */
/* 		Enter the leisure power save mode. */
/*  */
void LPS_Enter(struct adapter *padapter, const char *msg)
{
	struct dvobj_priv *dvobj = adapter_to_dvobj(padapter);
	struct pwrctrl_priv *pwrpriv = dvobj_to_pwrctl(dvobj);
	int n_assoc_iface = 0;
	char buf[32] = {0};

	if (hal_btcoex_IsBtControlLps(padapter))
		return;

	/* Skip lps enter request if number of assocated adapters is not 1 */
	if (check_fwstate(&(dvobj->padapters->mlmepriv), WIFI_ASOC_STATE))
		n_assoc_iface++;
	if (n_assoc_iface != 1)
		return;

	/* Skip lps enter request for adapter not port0 */
	if (get_iface_type(padapter) != IFACE_PORT0)
		return;

	if (!PS_RDY_CHECK(dvobj->padapters))
		return;

	if (pwrpriv->bLeisurePs) {
		/*  Idle for a while if we connect to AP a while ago. */
		if (pwrpriv->LpsIdleCount >= 2) { /*   4 Sec */
			if (pwrpriv->pwr_mode == PS_MODE_ACTIVE) {
				sprintf(buf, "WIFI-%s", msg);
				pwrpriv->bpower_saving = true;
				rtw_set_ps_mode(padapter, pwrpriv->power_mgnt, padapter->registrypriv.smart_ps, 0, buf);
			}
		} else
			pwrpriv->LpsIdleCount++;
	}

/* 	DBG_871X("-LeisurePSEnter\n"); */
}

/*  */
/* 	Description: */
/* 		Leave the leisure power save mode. */
/*  */
void LPS_Leave(struct adapter *padapter, const char *msg)
{
#define LPS_LEAVE_TIMEOUT_MS 100

	struct dvobj_priv *dvobj = adapter_to_dvobj(padapter);
	struct pwrctrl_priv *pwrpriv = dvobj_to_pwrctl(dvobj);
	char buf[32] = {0};

/* 	DBG_871X("+LeisurePSLeave\n"); */

	if (hal_btcoex_IsBtControlLps(padapter))
		return;

	if (pwrpriv->bLeisurePs) {
		if (pwrpriv->pwr_mode != PS_MODE_ACTIVE) {
			sprintf(buf, "WIFI-%s", msg);
			rtw_set_ps_mode(padapter, PS_MODE_ACTIVE, 0, 0, buf);

			if (pwrpriv->pwr_mode == PS_MODE_ACTIVE)
				LPS_RF_ON_check(padapter, LPS_LEAVE_TIMEOUT_MS);
		}
	}

	pwrpriv->bpower_saving = false;
/* 	DBG_871X("-LeisurePSLeave\n"); */

}

void LeaveAllPowerSaveModeDirect(struct adapter *Adapter)
{
	struct adapter *pri_padapter = GET_PRIMARY_ADAPTER(Adapter);
	struct mlme_priv *pmlmepriv = &(Adapter->mlmepriv);
	struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(Adapter);

	DBG_871X("%s.....\n", __func__);

	if (Adapter->bSurpriseRemoved) {
		DBG_871X(FUNC_ADPT_FMT ": bSurpriseRemoved =%d Skip!\n",
			FUNC_ADPT_ARG(Adapter), Adapter->bSurpriseRemoved);
		return;
	}

	if (check_fwstate(pmlmepriv, _FW_LINKED)) { /* connect */

		if (pwrpriv->pwr_mode == PS_MODE_ACTIVE) {
			DBG_871X("%s: Driver Already Leave LPS\n", __func__);
			return;
		}

		mutex_lock(&pwrpriv->lock);

		rtw_set_rpwm(Adapter, PS_STATE_S4);

		mutex_unlock(&pwrpriv->lock);

		rtw_lps_ctrl_wk_cmd(pri_padapter, LPS_CTRL_LEAVE, 0);
	} else {
		if (pwrpriv->rf_pwrstate == rf_off)
			if (!ips_leave(pri_padapter))
				DBG_871X("======> ips_leave fail.............\n");
	}
}

/*  */
/*  Description: Leave all power save mode: LPS, FwLPS, IPS if needed. */
/*  Move code to function by tynli. 2010.03.26. */
/*  */
void LeaveAllPowerSaveMode(struct adapter *Adapter)
{
	struct dvobj_priv *dvobj = adapter_to_dvobj(Adapter);
	u8 enqueue = 0;
	int n_assoc_iface = 0;

	if (!Adapter->bup) {
		DBG_871X(FUNC_ADPT_FMT ": bup =%d Skip!\n",
			FUNC_ADPT_ARG(Adapter), Adapter->bup);
		return;
	}

	if (Adapter->bSurpriseRemoved) {
		DBG_871X(FUNC_ADPT_FMT ": bSurpriseRemoved =%d Skip!\n",
			FUNC_ADPT_ARG(Adapter), Adapter->bSurpriseRemoved);
		return;
	}

	if (check_fwstate(&(dvobj->padapters->mlmepriv), WIFI_ASOC_STATE))
		n_assoc_iface++;

	if (n_assoc_iface) { /* connect */
		enqueue = 1;

		rtw_lps_ctrl_wk_cmd(Adapter, LPS_CTRL_LEAVE, enqueue);

		LPS_Leave_check(Adapter);
	} else {
		if (adapter_to_pwrctl(Adapter)->rf_pwrstate == rf_off) {
			if (!ips_leave(Adapter))
				DBG_871X("======> ips_leave fail.............\n");
		}
	}
}

void LPS_Leave_check(
	struct adapter *padapter)
{
	struct pwrctrl_priv *pwrpriv;
	unsigned long	start_time;
	u8 bReady;

	pwrpriv = adapter_to_pwrctl(padapter);

	bReady = false;
	start_time = jiffies;

	cond_resched();

	while (1) {
		mutex_lock(&pwrpriv->lock);

		if (padapter->bSurpriseRemoved
			|| !(padapter->hw_init_completed)
			|| (pwrpriv->pwr_mode == PS_MODE_ACTIVE))
			bReady = true;

		mutex_unlock(&pwrpriv->lock);

		if (bReady)
			break;

		if (jiffies_to_msecs(jiffies - start_time) > 100) {
			DBG_871X("Wait for cpwm event  than 100 ms!!!\n");
			break;
		}
		msleep(1);
	}
}

/*
 * Caller:ISR handler...
 *
 * This will be called when CPWM interrupt is up.
 *
 * using to update cpwn of drv; and drv willl make a decision to up or down pwr level
 */
void cpwm_int_hdl(
	struct adapter *padapter,
	struct reportpwrstate_parm *preportpwrstate)
{
	struct pwrctrl_priv *pwrpriv;

	pwrpriv = adapter_to_pwrctl(padapter);

	mutex_lock(&pwrpriv->lock);

	if (pwrpriv->rpwm < PS_STATE_S2) {
		DBG_871X("%s: Redundant CPWM Int. RPWM = 0x%02X CPWM = 0x%02x\n", __func__, pwrpriv->rpwm, pwrpriv->cpwm);
		goto exit;
	}

	pwrpriv->cpwm = PS_STATE(preportpwrstate->state);
	pwrpriv->cpwm_tog = preportpwrstate->state & PS_TOGGLE;

	if (pwrpriv->cpwm >= PS_STATE_S2) {
		if (pwrpriv->alives & CMD_ALIVE)
			complete(&padapter->cmdpriv.cmd_queue_comp);

		if (pwrpriv->alives & XMIT_ALIVE)
			complete(&padapter->xmitpriv.xmit_comp);
	}

exit:
	mutex_unlock(&pwrpriv->lock);

	RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_notice_,
			 ("cpwm_int_hdl: cpwm = 0x%02x\n", pwrpriv->cpwm));
}

static void cpwm_event_callback(struct work_struct *work)
{
	struct pwrctrl_priv *pwrpriv = container_of(work, struct pwrctrl_priv, cpwm_event);
	struct dvobj_priv *dvobj = pwrctl_to_dvobj(pwrpriv);
	struct adapter *adapter = dvobj->if1;
	struct reportpwrstate_parm report;

	/* DBG_871X("%s\n", __func__); */

	report.state = PS_STATE_S2;
	cpwm_int_hdl(adapter, &report);
}

static void rpwmtimeout_workitem_callback(struct work_struct *work)
{
	struct adapter *padapter;
	struct dvobj_priv *dvobj;
	struct pwrctrl_priv *pwrpriv;


	pwrpriv = container_of(work, struct pwrctrl_priv, rpwmtimeoutwi);
	dvobj = pwrctl_to_dvobj(pwrpriv);
	padapter = dvobj->if1;
/* 	DBG_871X("+%s: rpwm = 0x%02X cpwm = 0x%02X\n", __func__, pwrpriv->rpwm, pwrpriv->cpwm); */

	mutex_lock(&pwrpriv->lock);
	if ((pwrpriv->rpwm == pwrpriv->cpwm) || (pwrpriv->cpwm >= PS_STATE_S2)) {
		DBG_871X("%s: rpwm = 0x%02X cpwm = 0x%02X CPWM done!\n", __func__, pwrpriv->rpwm, pwrpriv->cpwm);
		goto exit;
	}
	mutex_unlock(&pwrpriv->lock);

	if (rtw_read8(padapter, 0x100) != 0xEA) {
		struct reportpwrstate_parm report;

		report.state = PS_STATE_S2;
		DBG_871X("\n%s: FW already leave 32K!\n\n", __func__);
		cpwm_int_hdl(padapter, &report);

		return;
	}

	mutex_lock(&pwrpriv->lock);

	if ((pwrpriv->rpwm == pwrpriv->cpwm) || (pwrpriv->cpwm >= PS_STATE_S2)) {
		DBG_871X("%s: cpwm =%d, nothing to do!\n", __func__, pwrpriv->cpwm);
		goto exit;
	}
	pwrpriv->brpwmtimeout = true;
	rtw_set_rpwm(padapter, pwrpriv->rpwm);
	pwrpriv->brpwmtimeout = false;

exit:
	mutex_unlock(&pwrpriv->lock);
}

/*
 * This function is a timer handler, can't do any IO in it.
 */
static void pwr_rpwm_timeout_handler(struct timer_list *t)
{
	struct pwrctrl_priv *pwrpriv = from_timer(pwrpriv, t, pwr_rpwm_timer);

	DBG_871X("+%s: rpwm = 0x%02X cpwm = 0x%02X\n", __func__, pwrpriv->rpwm, pwrpriv->cpwm);

	if ((pwrpriv->rpwm == pwrpriv->cpwm) || (pwrpriv->cpwm >= PS_STATE_S2)) {
		DBG_871X("+%s: cpwm =%d, nothing to do!\n", __func__, pwrpriv->cpwm);
		return;
	}

	_set_workitem(&pwrpriv->rpwmtimeoutwi);
}

static inline void register_task_alive(struct pwrctrl_priv *pwrctrl, u32 tag)
{
	pwrctrl->alives |= tag;
}

static inline void unregister_task_alive(struct pwrctrl_priv *pwrctrl, u32 tag)
{
	pwrctrl->alives &= ~tag;
}


/*
 * Description:
 *Check if the fw_pwrstate is okay for I/O.
 *If not (cpwm is less than S2), then the sub-routine
 *will raise the cpwm to be greater than or equal to S2.
 *
 *Calling Context: Passive
 *
 *Constraint:
 *	1. this function will request pwrctrl->lock
 *
 * Return Value:
 *_SUCCESS	hardware is ready for I/O
 *_FAIL		can't I/O right now
 */
s32 rtw_register_task_alive(struct adapter *padapter, u32 task)
{
	s32 res;
	struct pwrctrl_priv *pwrctrl;
	u8 pslv;

	res = _SUCCESS;
	pwrctrl = adapter_to_pwrctl(padapter);
	pslv = PS_STATE_S2;

	mutex_lock(&pwrctrl->lock);

	register_task_alive(pwrctrl, task);

	if (pwrctrl->bFwCurrentInPSMode) {
		RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_notice_,
				 ("%s: task = 0x%x cpwm = 0x%02x alives = 0x%08x\n",
				  __func__, task, pwrctrl->cpwm, pwrctrl->alives));

		if (pwrctrl->cpwm < pslv) {
			if (pwrctrl->cpwm < PS_STATE_S2)
				res = _FAIL;
			if (pwrctrl->rpwm < pslv)
				rtw_set_rpwm(padapter, pslv);
		}
	}

	mutex_unlock(&pwrctrl->lock);

	if (_FAIL == res)
		if (pwrctrl->cpwm >= PS_STATE_S2)
			res = _SUCCESS;

	return res;
}

/*
 * Description:
 *If task is done, call this func. to power down firmware again.
 *
 *Constraint:
 *	1. this function will request pwrctrl->lock
 *
 * Return Value:
 *none
 */
void rtw_unregister_task_alive(struct adapter *padapter, u32 task)
{
	struct pwrctrl_priv *pwrctrl;
	u8 pslv;

	pwrctrl = adapter_to_pwrctl(padapter);
	pslv = PS_STATE_S0;

	if (!(hal_btcoex_IsBtDisabled(padapter))
	    && hal_btcoex_IsBtControlLps(padapter)) {
		u8 val8;

		val8 = hal_btcoex_LpsVal(padapter);
		if (val8 & BIT(4))
			pslv = PS_STATE_S2;
	}

	mutex_lock(&pwrctrl->lock);

	unregister_task_alive(pwrctrl, task);

	if ((pwrctrl->pwr_mode != PS_MODE_ACTIVE)
	    && pwrctrl->bFwCurrentInPSMode) {
		RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_notice_,
				 ("%s: cpwm = 0x%02x alives = 0x%08x\n",
				  __func__, pwrctrl->cpwm, pwrctrl->alives));

		if (pwrctrl->cpwm > pslv)
			if ((pslv >= PS_STATE_S2) || (pwrctrl->alives == 0))
				rtw_set_rpwm(padapter, pslv);

	}

	mutex_unlock(&pwrctrl->lock);
}

/*
 * Caller: rtw_xmit_thread
 *
 * Check if the fw_pwrstate is okay for xmit.
 * If not (cpwm is less than S3), then the sub-routine
 * will raise the cpwm to be greater than or equal to S3.
 *
 * Calling Context: Passive
 *
 * Return Value:
 * _SUCCESS	rtw_xmit_thread can write fifo/txcmd afterwards.
 * _FAIL		rtw_xmit_thread can not do anything.
 */
s32 rtw_register_tx_alive(struct adapter *padapter)
{
	s32 res;
	struct pwrctrl_priv *pwrctrl;
	u8 pslv;

	res = _SUCCESS;
	pwrctrl = adapter_to_pwrctl(padapter);
	pslv = PS_STATE_S2;

	mutex_lock(&pwrctrl->lock);

	register_task_alive(pwrctrl, XMIT_ALIVE);

	if (pwrctrl->bFwCurrentInPSMode) {
		RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_notice_,
				 ("rtw_register_tx_alive: cpwm = 0x%02x alives = 0x%08x\n",
				  pwrctrl->cpwm, pwrctrl->alives));

		if (pwrctrl->cpwm < pslv) {
			if (pwrctrl->cpwm < PS_STATE_S2)
				res = _FAIL;
			if (pwrctrl->rpwm < pslv)
				rtw_set_rpwm(padapter, pslv);
		}
	}

	mutex_unlock(&pwrctrl->lock);

	if (_FAIL == res)
		if (pwrctrl->cpwm >= PS_STATE_S2)
			res = _SUCCESS;

	return res;
}

/*
 * Caller: rtw_cmd_thread
 *
 * Check if the fw_pwrstate is okay for issuing cmd.
 * If not (cpwm should be is less than S2), then the sub-routine
 * will raise the cpwm to be greater than or equal to S2.
 *
 * Calling Context: Passive
 *
 * Return Value:
 *_SUCCESS	rtw_cmd_thread can issue cmds to firmware afterwards.
 *_FAIL		rtw_cmd_thread can not do anything.
 */
s32 rtw_register_cmd_alive(struct adapter *padapter)
{
	s32 res;
	struct pwrctrl_priv *pwrctrl;
	u8 pslv;

	res = _SUCCESS;
	pwrctrl = adapter_to_pwrctl(padapter);
	pslv = PS_STATE_S2;

	mutex_lock(&pwrctrl->lock);

	register_task_alive(pwrctrl, CMD_ALIVE);

	if (pwrctrl->bFwCurrentInPSMode) {
		RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_info_,
				 ("rtw_register_cmd_alive: cpwm = 0x%02x alives = 0x%08x\n",
				  pwrctrl->cpwm, pwrctrl->alives));

		if (pwrctrl->cpwm < pslv) {
			if (pwrctrl->cpwm < PS_STATE_S2)
				res = _FAIL;
			if (pwrctrl->rpwm < pslv)
				rtw_set_rpwm(padapter, pslv);
		}
	}

	mutex_unlock(&pwrctrl->lock);

	if (_FAIL == res)
		if (pwrctrl->cpwm >= PS_STATE_S2)
			res = _SUCCESS;

	return res;
}

/*
 * Caller: ISR
 *
 * If ISR's txdone,
 * No more pkts for TX,
 * Then driver shall call this fun. to power down firmware again.
 */
void rtw_unregister_tx_alive(struct adapter *padapter)
{
	struct pwrctrl_priv *pwrctrl;
	u8 pslv;

	pwrctrl = adapter_to_pwrctl(padapter);
	pslv = PS_STATE_S0;

	if (!(hal_btcoex_IsBtDisabled(padapter))
		&& hal_btcoex_IsBtControlLps(padapter)) {
		u8 val8;

		val8 = hal_btcoex_LpsVal(padapter);
		if (val8 & BIT(4))
			pslv = PS_STATE_S2;
	}

	mutex_lock(&pwrctrl->lock);

	unregister_task_alive(pwrctrl, XMIT_ALIVE);

	if ((pwrctrl->pwr_mode != PS_MODE_ACTIVE)
		&& pwrctrl->bFwCurrentInPSMode) {
		RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_notice_,
				 ("%s: cpwm = 0x%02x alives = 0x%08x\n",
				  __func__, pwrctrl->cpwm, pwrctrl->alives));

		if (pwrctrl->cpwm > pslv)
			if ((pslv >= PS_STATE_S2) || (pwrctrl->alives == 0))
				rtw_set_rpwm(padapter, pslv);
	}

	mutex_unlock(&pwrctrl->lock);
}

/*
 * Caller: ISR
 *
 * If all commands have been done,
 * and no more command to do,
 * then driver shall call this fun. to power down firmware again.
 */
void rtw_unregister_cmd_alive(struct adapter *padapter)
{
	struct pwrctrl_priv *pwrctrl;
	u8 pslv;

	pwrctrl = adapter_to_pwrctl(padapter);
	pslv = PS_STATE_S0;

	if (!(hal_btcoex_IsBtDisabled(padapter))
	    && hal_btcoex_IsBtControlLps(padapter)) {
		u8 val8;

		val8 = hal_btcoex_LpsVal(padapter);
		if (val8 & BIT(4))
			pslv = PS_STATE_S2;
	}

	mutex_lock(&pwrctrl->lock);

	unregister_task_alive(pwrctrl, CMD_ALIVE);

	if ((pwrctrl->pwr_mode != PS_MODE_ACTIVE)
	    && pwrctrl->bFwCurrentInPSMode) {
		RT_TRACE(_module_rtl871x_pwrctrl_c_, _drv_info_,
				 ("%s: cpwm = 0x%02x alives = 0x%08x\n",
				  __func__, pwrctrl->cpwm, pwrctrl->alives));

		if (pwrctrl->cpwm > pslv) {
			if ((pslv >= PS_STATE_S2) || (pwrctrl->alives == 0))
				rtw_set_rpwm(padapter, pslv);
		}
	}

	mutex_unlock(&pwrctrl->lock);
}

void rtw_init_pwrctrl_priv(struct adapter *padapter)
{
	struct pwrctrl_priv *pwrctrlpriv = adapter_to_pwrctl(padapter);

	mutex_init(&pwrctrlpriv->lock);
	pwrctrlpriv->rf_pwrstate = rf_on;
	pwrctrlpriv->ips_enter_cnts = 0;
	pwrctrlpriv->ips_leave_cnts = 0;
	pwrctrlpriv->bips_processing = false;

	pwrctrlpriv->ips_mode = padapter->registrypriv.ips_mode;
	pwrctrlpriv->ips_mode_req = padapter->registrypriv.ips_mode;

	pwrctrlpriv->pwr_state_check_interval = RTW_PWR_STATE_CHK_INTERVAL;
	pwrctrlpriv->pwr_state_check_cnts = 0;
	pwrctrlpriv->bInternalAutoSuspend = false;
	pwrctrlpriv->bInSuspend = false;
	pwrctrlpriv->bkeepfwalive = false;

	pwrctrlpriv->LpsIdleCount = 0;
	pwrctrlpriv->power_mgnt = padapter->registrypriv.power_mgnt;/*  PS_MODE_MIN; */
	pwrctrlpriv->bLeisurePs = pwrctrlpriv->power_mgnt != PS_MODE_ACTIVE;

	pwrctrlpriv->bFwCurrentInPSMode = false;

	pwrctrlpriv->rpwm = 0;
	pwrctrlpriv->cpwm = PS_STATE_S4;

	pwrctrlpriv->pwr_mode = PS_MODE_ACTIVE;
	pwrctrlpriv->smart_ps = padapter->registrypriv.smart_ps;
	pwrctrlpriv->bcn_ant_mode = 0;
	pwrctrlpriv->dtim = 0;

	pwrctrlpriv->tog = 0x80;

	rtw_hal_set_hwreg(padapter, HW_VAR_SET_RPWM, (u8 *)(&pwrctrlpriv->rpwm));

	_init_workitem(&pwrctrlpriv->cpwm_event, cpwm_event_callback, NULL);

	pwrctrlpriv->brpwmtimeout = false;
	pwrctrlpriv->adapter = padapter;
	_init_workitem(&pwrctrlpriv->rpwmtimeoutwi, rpwmtimeout_workitem_callback, NULL);
	timer_setup(&pwrctrlpriv->pwr_rpwm_timer, pwr_rpwm_timeout_handler, 0);
	timer_setup(&pwrctrlpriv->pwr_state_check_timer,
		    pwr_state_check_handler, 0);

	pwrctrlpriv->wowlan_mode = false;
	pwrctrlpriv->wowlan_ap_mode = false;

#ifdef CONFIG_PNO_SUPPORT
	pwrctrlpriv->pno_inited = false;
	pwrctrlpriv->pnlo_info = NULL;
	pwrctrlpriv->pscan_info = NULL;
	pwrctrlpriv->pno_ssid_list = NULL;
	pwrctrlpriv->pno_in_resume = true;
#endif
}


void rtw_free_pwrctrl_priv(struct adapter *adapter)
{
#ifdef CONFIG_PNO_SUPPORT
	if (pwrctrlpriv->pnlo_info != NULL)
		printk("****** pnlo_info memory leak********\n");

	if (pwrctrlpriv->pscan_info != NULL)
		printk("****** pscan_info memory leak********\n");

	if (pwrctrlpriv->pno_ssid_list != NULL)
		printk("****** pno_ssid_list memory leak********\n");
#endif
}

inline void rtw_set_ips_deny(struct adapter *padapter, u32 ms)
{
	struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);
	pwrpriv->ips_deny_time = jiffies + msecs_to_jiffies(ms);
}

/*
* rtw_pwr_wakeup - Wake the NIC up from: 1)IPS. 2)USB autosuspend
* @adapter: pointer to struct adapter structure
* @ips_deffer_ms: the ms will prevent from falling into IPS after wakeup
* Return _SUCCESS or _FAIL
*/

int _rtw_pwr_wakeup(struct adapter *padapter, u32 ips_deffer_ms, const char *caller)
{
	struct dvobj_priv *dvobj = adapter_to_dvobj(padapter);
	struct pwrctrl_priv *pwrpriv = dvobj_to_pwrctl(dvobj);
	struct mlme_priv *pmlmepriv;
	int ret = _SUCCESS;
	unsigned long start = jiffies;
	unsigned long deny_time = jiffies + msecs_to_jiffies(ips_deffer_ms);

	/* for LPS */
	LeaveAllPowerSaveMode(padapter);

	/* IPS still bound with primary adapter */
	padapter = GET_PRIMARY_ADAPTER(padapter);
	pmlmepriv = &padapter->mlmepriv;

	if (time_before(pwrpriv->ips_deny_time, deny_time))
		pwrpriv->ips_deny_time = deny_time;


	if (pwrpriv->ps_processing) {
		DBG_871X("%s wait ps_processing...\n", __func__);
		while (pwrpriv->ps_processing && jiffies_to_msecs(jiffies - start) <= 3000)
			mdelay(10);
		if (pwrpriv->ps_processing)
			DBG_871X("%s wait ps_processing timeout\n", __func__);
		else
			DBG_871X("%s wait ps_processing done\n", __func__);
	}

	if (!(pwrpriv->bInternalAutoSuspend) && pwrpriv->bInSuspend) {
		DBG_871X("%s wait bInSuspend...\n", __func__);
		while (pwrpriv->bInSuspend
			&& jiffies_to_msecs(jiffies - start) <= 3000
		) {
			mdelay(10);
		}
		if (pwrpriv->bInSuspend)
			DBG_871X("%s wait bInSuspend timeout\n", __func__);
		else
			DBG_871X("%s wait bInSuspend done\n", __func__);
	}

	/* System suspend is not allowed to wakeup */
	if (!(pwrpriv->bInternalAutoSuspend) && pwrpriv->bInSuspend) {
		ret = _FAIL;
		goto exit;
	}

	/* block??? */
	if (pwrpriv->bInternalAutoSuspend  && padapter->net_closed) {
		ret = _FAIL;
		goto exit;
	}

	/* I think this should be check in IPS, LPS, autosuspend functions... */
	if (check_fwstate(pmlmepriv, _FW_LINKED)) {
		ret = _SUCCESS;
		goto exit;
	}

	if (rf_off == pwrpriv->rf_pwrstate) {
		{
			DBG_8192C("%s call ips_leave....\n", __func__);
			if (_FAIL ==  ips_leave(padapter)) {
				DBG_8192C("======> ips_leave fail.............\n");
				ret = _FAIL;
				goto exit;
			}
		}
	}

	/* TODO: the following checking need to be merged... */
	if (padapter->bDriverStopped
		|| !padapter->bup
		|| !padapter->hw_init_completed
	) {
		DBG_8192C("%s: bDriverStopped =%d, bup =%d, hw_init_completed =%u\n"
			, caller
			, padapter->bDriverStopped
			, padapter->bup
			, padapter->hw_init_completed);
		ret = false;
		goto exit;
	}

exit:
	deny_time = jiffies + msecs_to_jiffies(ips_deffer_ms);
	if (time_before(pwrpriv->ips_deny_time, deny_time))
		pwrpriv->ips_deny_time = deny_time;
	return ret;

}

int rtw_pm_set_lps(struct adapter *padapter, u8 mode)
{
	int	ret = 0;
	struct pwrctrl_priv *pwrctrlpriv = adapter_to_pwrctl(padapter);

	if (mode < PS_MODE_NUM) {
		if (pwrctrlpriv->power_mgnt != mode) {
			if (PS_MODE_ACTIVE == mode)
				LeaveAllPowerSaveMode(padapter);
			else
				pwrctrlpriv->LpsIdleCount = 2;

			pwrctrlpriv->power_mgnt = mode;
			pwrctrlpriv->bLeisurePs =
				pwrctrlpriv->power_mgnt != PS_MODE_ACTIVE;
		}
	} else
		ret = -EINVAL;

	return ret;
}

int rtw_pm_set_ips(struct adapter *padapter, u8 mode)
{
	struct pwrctrl_priv *pwrctrlpriv = adapter_to_pwrctl(padapter);

	if (mode == IPS_NORMAL || mode == IPS_LEVEL_2) {
		rtw_ips_mode_req(pwrctrlpriv, mode);
		DBG_871X("%s %s\n", __func__, mode == IPS_NORMAL?"IPS_NORMAL":"IPS_LEVEL_2");
		return 0;
	} else if (mode == IPS_NONE) {
		rtw_ips_mode_req(pwrctrlpriv, mode);
		DBG_871X("%s %s\n", __func__, "IPS_NONE");
		if ((padapter->bSurpriseRemoved == 0) && (_FAIL == rtw_pwr_wakeup(padapter)))
			return -EFAULT;
	} else
		return -EINVAL;

	return 0;
}

/*
 * ATTENTION:
 *This function will request pwrctrl LOCK!
 */
void rtw_ps_deny(struct adapter *padapter, enum PS_DENY_REASON reason)
{
	struct pwrctrl_priv *pwrpriv;

/* 	DBG_871X("+" FUNC_ADPT_FMT ": Request PS deny for %d (0x%08X)\n", */
/* 		FUNC_ADPT_ARG(padapter), reason, BIT(reason)); */

	pwrpriv = adapter_to_pwrctl(padapter);

	mutex_lock(&pwrpriv->lock);
	if (pwrpriv->ps_deny & BIT(reason)) {
		DBG_871X(FUNC_ADPT_FMT ": [WARNING] Reason %d had been set before!!\n",
			FUNC_ADPT_ARG(padapter), reason);
	}
	pwrpriv->ps_deny |= BIT(reason);
	mutex_unlock(&pwrpriv->lock);

/* 	DBG_871X("-" FUNC_ADPT_FMT ": Now PS deny for 0x%08X\n", */
/* 		FUNC_ADPT_ARG(padapter), pwrpriv->ps_deny); */
}

/*
 * ATTENTION:
 *This function will request pwrctrl LOCK!
 */
void rtw_ps_deny_cancel(struct adapter *padapter, enum PS_DENY_REASON reason)
{
	struct pwrctrl_priv *pwrpriv;


/* 	DBG_871X("+" FUNC_ADPT_FMT ": Cancel PS deny for %d(0x%08X)\n", */
/* 		FUNC_ADPT_ARG(padapter), reason, BIT(reason)); */

	pwrpriv = adapter_to_pwrctl(padapter);

	mutex_lock(&pwrpriv->lock);
	if ((pwrpriv->ps_deny & BIT(reason)) == 0) {
		DBG_871X(FUNC_ADPT_FMT ": [ERROR] Reason %d had been canceled before!!\n",
			FUNC_ADPT_ARG(padapter), reason);
	}
	pwrpriv->ps_deny &= ~BIT(reason);
	mutex_unlock(&pwrpriv->lock);

/* 	DBG_871X("-" FUNC_ADPT_FMT ": Now PS deny for 0x%08X\n", */
/* 		FUNC_ADPT_ARG(padapter), pwrpriv->ps_deny); */
}

/*
 * ATTENTION:
 *Before calling this function pwrctrl lock should be occupied already,
 *otherwise it may return incorrect value.
 */
u32 rtw_ps_deny_get(struct adapter *padapter)
{
	return adapter_to_pwrctl(padapter)->ps_deny;
}
rtw_pwrctrl.c
