Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1174 insertions, 0 deletions

diff --git a/drivers/staging/rtl8723bs/core/rtw_pwrctrl.c b/drivers/staging/rtl8723bs/core/rtw_pwrctrl.c
new file mode 100644
index 0000000000..a392d5b4ca
--- /dev/null
+++ b/drivers/staging/rtl8723bs/core/rtw_pwrctrl.c
@@ -0,0 +1,1174 @@
+// SPDX-License-Identifier: GPL-2.0
+/******************************************************************************
+ *
+ * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
+ *
+ ******************************************************************************/
+#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++;
+
+	if (rf_off == pwrpriv->change_rfpwrstate) {
+		pwrpriv->bpower_saving = true;
+
+		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++;
+
+		result = rtw_ips_pwr_up(padapter);
+		if (result == _SUCCESS) {
+			pwrpriv->rf_pwrstate = rf_on;
+		}
+		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 (ret == _SUCCESS)
+		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)
+		goto exit;
+
+	if (time_before(jiffies, adapter_to_pwrctl(adapter)->ips_deny_time))
+		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) {
+		netdev_dbg(adapter->pnetdev,
+			   "There are some pkts to transmit\n");
+		netdev_dbg(adapter->pnetdev,
+			   "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)
+		goto exit;
+
+	if (pwrpriv->bInSuspend) {/* system suspend or autosuspend */
+		pdbgpriv->dbg_ps_insuspend_cnt++;
+		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)) {
+		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))) {
+					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)))
+				bLeaveLPS = true;
+		}
+	}
+
+	if (bLeaveLPS)
+		/* 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) {
+		if (pwrpriv->rpwm == pslv ||
+		    (pwrpriv->rpwm >= PS_STATE_S2 && pslv >= PS_STATE_S2))
+			return;
+
+	}
+
+	if ((padapter->bSurpriseRemoved) || !(padapter->hw_init_completed)) {
+		pwrpriv->cpwm = PS_STATE_S4;
+
+		return;
+	}
+
+	if (padapter->bDriverStopped) {
+		if (pslv < PS_STATE_S2)
+			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;
+
+	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) {
+				_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 (pwrpriv->bInSuspend)
+		return false;
+
+	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)
+		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 (ps_mode > PM_Card_Disable)
+		return;
+
+	if (pwrpriv->pwr_mode == ps_mode)
+		if (ps_mode == PS_MODE_ACTIVE)
+			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)))) {
+			pwrpriv->pwr_mode = ps_mode;
+			rtw_set_rpwm(padapter, PS_STATE_S4);
+
+			rtw_hal_set_hwreg(padapter, HW_VAR_H2C_FW_PWRMODE, (u8 *)(&ps_mode));
+			pwrpriv->fw_current_in_ps_mode = 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;
+
+			hal_btcoex_LpsNotify(padapter, ps_mode);
+
+			pwrpriv->fw_current_in_ps_mode = 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;
+			break;
+		}
+
+		if (jiffies_to_msecs(jiffies - start_time) > delay_ms) {
+			err = -1;
+			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) {
+				scnprintf(buf, sizeof(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++;
+	}
+}
+
+/*  */
+/* 	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};
+
+	if (hal_btcoex_IsBtControlLps(padapter))
+		return;
+
+	if (pwrpriv->bLeisurePs) {
+		if (pwrpriv->pwr_mode != PS_MODE_ACTIVE) {
+			scnprintf(buf, sizeof(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;
+}
+
+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);
+
+	if (Adapter->bSurpriseRemoved)
+		return;
+
+	if (check_fwstate(pmlmepriv, _FW_LINKED)) { /* connect */
+
+		if (pwrpriv->pwr_mode == PS_MODE_ACTIVE)
+			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)
+			ips_leave(pri_padapter);
+	}
+}
+
+/*  */
+/*  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)
+		return;
+
+	if (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) {
+			ips_leave(Adapter);
+		}
+	}
+}
+
+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)
+			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)
+		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);
+
+}
+
+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;
+
+	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;
+
+	mutex_lock(&pwrpriv->lock);
+	if ((pwrpriv->rpwm == pwrpriv->cpwm) || (pwrpriv->cpwm >= PS_STATE_S2))
+		goto exit;
+
+	mutex_unlock(&pwrpriv->lock);
+
+	if (rtw_read8(padapter, 0x100) != 0xEA) {
+		struct reportpwrstate_parm report;
+
+		report.state = PS_STATE_S2;
+		cpwm_int_hdl(padapter, &report);
+
+		return;
+	}
+
+	mutex_lock(&pwrpriv->lock);
+
+	if ((pwrpriv->rpwm == pwrpriv->cpwm) || (pwrpriv->cpwm >= PS_STATE_S2))
+		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);
+
+	if ((pwrpriv->rpwm == pwrpriv->cpwm) || (pwrpriv->cpwm >= PS_STATE_S2))
+		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->fw_current_in_ps_mode) {
+		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 (res == _FAIL)
+		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->fw_current_in_ps_mode) {
+		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->fw_current_in_ps_mode) {
+		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 (res == _FAIL)
+		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->fw_current_in_ps_mode) {
+		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 (res == _FAIL)
+		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->fw_current_in_ps_mode) {
+		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->fw_current_in_ps_mode) {
+		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->fw_current_in_ps_mode = 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;
+}
+
+
+void rtw_free_pwrctrl_priv(struct adapter *adapter)
+{
+}
+
+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)
+		while (pwrpriv->ps_processing && jiffies_to_msecs(jiffies - start) <= 3000)
+			mdelay(10);
+
+	if (!(pwrpriv->bInternalAutoSuspend) && pwrpriv->bInSuspend)
+		while (pwrpriv->bInSuspend && jiffies_to_msecs(jiffies - start) <= 3000
+		)
+			mdelay(10);
+
+	/* 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) {
+		{
+			if (ips_leave(padapter) == _FAIL) {
+				ret = _FAIL;
+				goto exit;
+			}
+		}
+	}
+
+	/* TODO: the following checking need to be merged... */
+	if (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 (mode == PS_MODE_ACTIVE)
+				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);
+		return 0;
+	} else if (mode == IPS_NONE) {
+		rtw_ips_mode_req(pwrctrlpriv, mode);
+		if ((padapter->bSurpriseRemoved == 0) && (rtw_pwr_wakeup(padapter) == _FAIL))
+			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;
+
+	pwrpriv = adapter_to_pwrctl(padapter);
+
+	mutex_lock(&pwrpriv->lock);
+	pwrpriv->ps_deny |= BIT(reason);
+	mutex_unlock(&pwrpriv->lock);
+}
+
+/*
+ * ATTENTION:
+ *This function will request pwrctrl LOCK!
+ */
+void rtw_ps_deny_cancel(struct adapter *padapter, enum ps_deny_reason reason)
+{
+	struct pwrctrl_priv *pwrpriv;
+
+	pwrpriv = adapter_to_pwrctl(padapter);
+
+	mutex_lock(&pwrpriv->lock);
+	pwrpriv->ps_deny &= ~BIT(reason);
+	mutex_unlock(&pwrpriv->lock);
+}
+
+/*
+ * 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;
+}