3 * Copyright (c) 2004-2010 Atheros Communications Inc.
8 // Permission to use, copy, modify, and/or distribute this software for any
9 // purpose with or without fee is hereby granted, provided that the above
10 // copyright notice and this permission notice appear in all copies.
12 // THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13 // WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14 // MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15 // ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16 // WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 // ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 // OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
25 * Implementation of system power management
28 #include "ar6000_drv.h"
29 #include <linux/inetdevice.h>
30 #include <linux/platform_device.h>
31 #include "wlan_config.h"
33 #ifdef CONFIG_HAS_WAKELOCK
34 #include <linux/wakelock.h>
37 #define WOW_ENABLE_MAX_INTERVAL 0
38 #define WOW_SET_SCAN_PARAMS 0
40 extern unsigned int wmitimeout;
41 extern wait_queue_head_t arEvent;
44 #ifdef CONFIG_HAS_WAKELOCK
45 struct wake_lock ar6k_suspend_wake_lock;
46 struct wake_lock ar6k_wow_wake_lock;
48 #endif /* CONFIG_PM */
51 extern void android_ar6k_check_wow_status(AR_SOFTC_T *ar, struct sk_buff *skb, A_BOOL isEvent);
53 #undef ATH_MODULE_NAME
54 #define ATH_MODULE_NAME pm
55 #define ATH_DEBUG_PM ATH_DEBUG_MAKE_MODULE_MASK(0)
58 static ATH_DEBUG_MASK_DESCRIPTION pm_debug_desc[] = {
59 { ATH_DEBUG_PM , "System power management"},
62 ATH_DEBUG_INSTANTIATE_MODULE_VAR(pm,
64 "System Power Management",
65 ATH_DEBUG_MASK_DEFAULTS | ATH_DEBUG_PM,
66 ATH_DEBUG_DESCRIPTION_COUNT(pm_debug_desc),
71 A_STATUS ar6000_exit_cut_power_state(AR_SOFTC_T *ar);
74 static void ar6k_send_asleep_event_to_app(AR_SOFTC_T *ar, A_BOOL asleep)
77 union iwreq_data wrqu;
79 snprintf(buf, sizeof(buf), "HOST_ASLEEP=%s", asleep ? "asleep" : "awake");
80 A_MEMZERO(&wrqu, sizeof(wrqu));
81 wrqu.data.length = strlen(buf);
82 wireless_send_event(ar->arNetDev, IWEVCUSTOM, &wrqu, buf);
85 static void ar6000_wow_resume(AR_SOFTC_T *ar)
87 if (ar->arWowState!= WLAN_WOW_STATE_NONE) {
88 A_UINT16 fg_start_period = (ar->scParams.fg_start_period==0) ? 1 : ar->scParams.fg_start_period;
89 A_UINT16 bg_period = (ar->scParams.bg_period==0) ? 60 : ar->scParams.bg_period;
90 WMI_SET_HOST_SLEEP_MODE_CMD hostSleepMode = {TRUE, FALSE};
91 ar->arWowState = WLAN_WOW_STATE_NONE;
92 #ifdef CONFIG_HAS_WAKELOCK
93 wake_lock_timeout(&ar6k_wow_wake_lock, 3*HZ);
95 if (wmi_set_host_sleep_mode_cmd(ar->arWmi, &hostSleepMode)!=A_OK) {
96 AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Fail to setup restore host awake\n"));
98 #if WOW_SET_SCAN_PARAMS
99 wmi_scanparams_cmd(ar->arWmi, fg_start_period,
100 ar->scParams.fg_end_period,
102 ar->scParams.minact_chdwell_time,
103 ar->scParams.maxact_chdwell_time,
104 ar->scParams.pas_chdwell_time,
105 ar->scParams.shortScanRatio,
106 ar->scParams.scanCtrlFlags,
107 ar->scParams.max_dfsch_act_time,
108 ar->scParams.maxact_scan_per_ssid);
110 (void)fg_start_period;
115 #if WOW_ENABLE_MAX_INTERVAL /* we don't do it if the power consumption is already good enough. */
116 if (wmi_listeninterval_cmd(ar->arWmi, ar->arListenIntervalT, ar->arListenIntervalB) == A_OK) {
119 ar6k_send_asleep_event_to_app(ar, FALSE);
120 AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("Resume WoW successfully\n"));
122 AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("WoW does not invoked. skip resume"));
124 ar->arWlanPowerState = WLAN_POWER_STATE_ON;
127 static void ar6000_wow_suspend(AR_SOFTC_T *ar)
129 #define WOW_LIST_ID 1
130 if (ar->arNetworkType != AP_NETWORK) {
131 /* Setup WoW for unicast & Arp request for our own IP
132 disable background scan. Set listen interval into 1000 TUs
133 Enable keepliave for 110 seconds
135 struct in_ifaddr **ifap = NULL;
136 struct in_ifaddr *ifa = NULL;
137 struct in_device *in_dev;
138 A_UINT8 macMask[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
140 WMI_ADD_WOW_PATTERN_CMD addWowCmd = { .filter = { 0 } };
141 WMI_DEL_WOW_PATTERN_CMD delWowCmd;
142 WMI_SET_HOST_SLEEP_MODE_CMD hostSleepMode = {FALSE, TRUE};
143 WMI_SET_WOW_MODE_CMD wowMode = { .enable_wow = TRUE,
144 .hostReqDelay = 500 };/*500 ms delay*/
146 if (ar->arWowState!= WLAN_WOW_STATE_NONE) {
147 AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("System already go into wow mode!\n"));
151 ar6000_TxDataCleanup(ar); /* IMPORTANT, otherwise there will be 11mA after listen interval as 1000*/
153 #if WOW_ENABLE_MAX_INTERVAL /* we don't do it if the power consumption is already good enough. */
154 if (wmi_listeninterval_cmd(ar->arWmi, A_MAX_WOW_LISTEN_INTERVAL, 0) == A_OK) {
158 #if WOW_SET_SCAN_PARAMS
159 status = wmi_scanparams_cmd(ar->arWmi, 0xFFFF, 0, 0xFFFF, 0, 0, 0, 0, 0, 0, 0);
161 /* clear up our WoW pattern first */
162 delWowCmd.filter_list_id = WOW_LIST_ID;
163 delWowCmd.filter_id = 0;
164 wmi_del_wow_pattern_cmd(ar->arWmi, &delWowCmd);
166 /* setup unicast packet pattern for WoW */
167 if (ar->arNetDev->dev_addr[1]) {
168 addWowCmd.filter_list_id = WOW_LIST_ID;
169 addWowCmd.filter_size = 6; /* MAC address */
170 addWowCmd.filter_offset = 0;
171 status = wmi_add_wow_pattern_cmd(ar->arWmi, &addWowCmd, ar->arNetDev->dev_addr, macMask, addWowCmd.filter_size);
172 if (status != A_OK) {
173 AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Fail to add WoW pattern\n"));
176 /* setup ARP request for our own IP */
177 if ((in_dev = __in_dev_get_rtnl(ar->arNetDev)) != NULL) {
178 for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL; ifap = &ifa->ifa_next) {
179 if (!strcmp(ar->arNetDev->name, ifa->ifa_label)) {
184 if (ifa && ifa->ifa_local) {
185 WMI_SET_IP_CMD ipCmd;
186 memset(&ipCmd, 0, sizeof(ipCmd));
187 ipCmd.ips[0] = ifa->ifa_local;
188 status = wmi_set_ip_cmd(ar->arWmi, &ipCmd);
189 if (status != A_OK) {
190 AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Fail to setup IP for ARP agent\n"));
194 #ifndef ATH6K_CONFIG_OTA_MODE
195 wmi_powermode_cmd(ar->arWmi, REC_POWER);
198 status = wmi_set_wow_mode_cmd(ar->arWmi, &wowMode);
199 if (status != A_OK) {
200 AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Fail to enable wow mode\n"));
202 ar6k_send_asleep_event_to_app(ar, TRUE);
204 status = wmi_set_host_sleep_mode_cmd(ar->arWmi, &hostSleepMode);
205 if (status != A_OK) {
206 AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Fail to set host asleep\n"));
209 ar->arWowState = WLAN_WOW_STATE_SUSPENDING;
210 if (ar->arTxPending[ar->arControlEp]) {
211 A_UINT32 timeleft = wait_event_interruptible_timeout(arEvent,
212 ar->arTxPending[ar->arControlEp] == 0, wmitimeout * HZ);
213 if (!timeleft || signal_pending(current)) {
214 /* what can I do? wow resume at once */
215 AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Fail to setup WoW. Pending wmi control data %d\n", ar->arTxPending[ar->arControlEp]));
219 status = hifWaitForPendingRecv(ar->arHifDevice);
221 ar->arWowState = WLAN_WOW_STATE_SUSPENDED;
222 ar->arWlanPowerState = WLAN_POWER_STATE_WOW;
224 AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Not allowed to go to WOW at this moment.\n"));
228 A_STATUS ar6000_suspend_ev(void *context)
230 A_STATUS status = A_OK;
231 AR_SOFTC_T *ar = (AR_SOFTC_T *)context;
232 A_INT16 pmmode = ar->arSuspendConfig;
235 case WLAN_SUSPEND_WOW:
236 if (ar->arWmiReady && ar->arWlanState==WLAN_ENABLED && ar->arConnected) {
237 ar6000_wow_suspend(ar);
238 AR_DEBUG_PRINTF(ATH_DEBUG_PM,("%s:Suspend for wow mode %d\n", __func__, ar->arWlanPowerState));
240 pmmode = ar->arWow2Config;
241 goto wow_not_connected;
244 case WLAN_SUSPEND_CUT_PWR:
246 case WLAN_SUSPEND_CUT_PWR_IF_BT_OFF:
248 case WLAN_SUSPEND_DEEP_SLEEP:
251 status = ar6000_update_wlan_pwr_state(ar, WLAN_DISABLED, TRUE);
252 if (ar->arWlanPowerState==WLAN_POWER_STATE_ON ||
253 ar->arWlanPowerState==WLAN_POWER_STATE_WOW) {
254 AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("Strange suspend state for not wow mode %d", ar->arWlanPowerState));
256 AR_DEBUG_PRINTF(ATH_DEBUG_PM,("%s:Suspend for %d mode pwr %d status %d\n", __func__, pmmode, ar->arWlanPowerState, status));
257 status = (ar->arWlanPowerState == WLAN_POWER_STATE_CUT_PWR) ? A_OK : A_EBUSY;
261 ar->scan_triggered = 0;
265 A_STATUS ar6000_resume_ev(void *context)
267 AR_SOFTC_T *ar = (AR_SOFTC_T *)context;
268 A_UINT16 powerState = ar->arWlanPowerState;
270 #ifdef CONFIG_HAS_WAKELOCK
271 wake_lock(&ar6k_suspend_wake_lock);
273 AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("%s: enter previous state %d wowState %d\n", __func__, powerState, ar->arWowState));
274 switch (powerState) {
275 case WLAN_POWER_STATE_WOW:
276 ar6000_wow_resume(ar);
278 case WLAN_POWER_STATE_CUT_PWR:
280 case WLAN_POWER_STATE_DEEP_SLEEP:
281 ar6000_update_wlan_pwr_state(ar, WLAN_ENABLED, TRUE);
282 AR_DEBUG_PRINTF(ATH_DEBUG_PM,("%s:Resume for %d mode pwr %d\n", __func__, powerState, ar->arWlanPowerState));
284 case WLAN_POWER_STATE_ON:
287 AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Strange SDIO bus power mode!!\n"));
290 #ifdef CONFIG_HAS_WAKELOCK
291 wake_unlock(&ar6k_suspend_wake_lock);
296 void ar6000_check_wow_status(AR_SOFTC_T *ar, struct sk_buff *skb, A_BOOL isEvent)
298 if (ar->arWowState!=WLAN_WOW_STATE_NONE) {
299 if (ar->arWowState==WLAN_WOW_STATE_SUSPENDING) {
300 AR_DEBUG_PRINTF(ATH_DEBUG_PM,("\n%s: Received IRQ while we are wow suspending!!!\n\n", __func__));
303 /* Wow resume from irq interrupt */
304 AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("%s: WoW resume from irq thread status %d\n", __func__, ar->arWlanPowerState));
305 ar6000_wow_resume(ar);
308 android_ar6k_check_wow_status(ar, skb, isEvent);
313 A_STATUS ar6000_power_change_ev(void *context, A_UINT32 config)
315 AR_SOFTC_T *ar = (AR_SOFTC_T *)context;
316 A_STATUS status = A_OK;
318 AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("%s: power change event callback %d \n", __func__, config));
320 case HIF_DEVICE_POWER_UP:
321 ar6000_restart_endpoint(ar->arNetDev);
324 case HIF_DEVICE_POWER_DOWN:
325 case HIF_DEVICE_POWER_CUT:
332 static int ar6000_pm_probe(struct platform_device *pdev)
334 plat_setup_power(1,1);
338 static int ar6000_pm_remove(struct platform_device *pdev)
340 plat_setup_power(0,1);
344 static int ar6000_pm_suspend(struct platform_device *pdev, pm_message_t state)
349 static int ar6000_pm_resume(struct platform_device *pdev)
354 static struct platform_driver ar6000_pm_device = {
355 .probe = ar6000_pm_probe,
356 .remove = ar6000_pm_remove,
357 .suspend = ar6000_pm_suspend,
358 .resume = ar6000_pm_resume,
360 .name = "wlan_ar6000_pm",
363 #endif /* CONFIG_PM */
366 ar6000_setup_cut_power_state(struct ar6_softc *ar, AR6000_WLAN_STATE state)
368 A_STATUS status = A_OK;
369 HIF_DEVICE_POWER_CHANGE_TYPE config;
371 AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("%s: Cut power %d %d \n", __func__,state, ar->arWlanPowerState));
373 AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("Wlan OFF %d BT OFf %d \n", ar->arWlanOff, ar->arBTOff));
376 if (state == WLAN_ENABLED) {
377 /* Not in cut power state.. exit */
378 if (ar->arWlanPowerState != WLAN_POWER_STATE_CUT_PWR) {
382 plat_setup_power(1,0);
384 /* Change the state to ON */
385 ar->arWlanPowerState = WLAN_POWER_STATE_ON;
388 /* Indicate POWER_UP to HIF */
389 config = HIF_DEVICE_POWER_UP;
390 status = HIFConfigureDevice(ar->arHifDevice,
391 HIF_DEVICE_POWER_STATE_CHANGE,
393 sizeof(HIF_DEVICE_POWER_CHANGE_TYPE));
395 if (status == A_PENDING) {
397 /* Wait for WMI ready event */
398 A_UINT32 timeleft = wait_event_interruptible_timeout(arEvent,
399 (ar->arWmiReady == TRUE), wmitimeout * HZ);
400 if (!timeleft || signal_pending(current)) {
401 AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("ar6000 : Failed to get wmi ready \n"));
407 } else if (status == A_OK) {
408 ar6000_restart_endpoint(ar->arNetDev);
411 } else if (state == WLAN_DISABLED) {
414 /* Already in cut power state.. exit */
415 if (ar->arWlanPowerState == WLAN_POWER_STATE_CUT_PWR) {
418 ar6000_stop_endpoint(ar->arNetDev, TRUE, FALSE);
420 config = HIF_DEVICE_POWER_CUT;
421 status = HIFConfigureDevice(ar->arHifDevice,
422 HIF_DEVICE_POWER_STATE_CHANGE,
424 sizeof(HIF_DEVICE_POWER_CHANGE_TYPE));
426 plat_setup_power(0,0);
428 ar->arWlanPowerState = WLAN_POWER_STATE_CUT_PWR;
436 ar6000_setup_deep_sleep_state(struct ar6_softc *ar, AR6000_WLAN_STATE state)
438 A_STATUS status = A_OK;
440 AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("%s: Deep sleep %d %d \n", __func__,state, ar->arWlanPowerState));
442 AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("Wlan OFF %d BT OFf %d \n", ar->arWlanOff, ar->arBTOff));
445 WMI_SET_HOST_SLEEP_MODE_CMD hostSleepMode;
447 if (state == WLAN_ENABLED) {
448 A_UINT16 fg_start_period;
450 /* Not in deep sleep state.. exit */
451 if (ar->arWlanPowerState != WLAN_POWER_STATE_DEEP_SLEEP) {
452 if (ar->arWlanPowerState != WLAN_POWER_STATE_ON) {
453 AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Strange state when we resume from deep sleep %d\n", ar->arWlanPowerState));
458 fg_start_period = (ar->scParams.fg_start_period==0) ? 1 : ar->scParams.fg_start_period;
459 hostSleepMode.awake = TRUE;
460 hostSleepMode.asleep = FALSE;
462 if ((status=wmi_set_host_sleep_mode_cmd(ar->arWmi, &hostSleepMode)) != A_OK) {
466 /* Change the state to ON */
467 ar->arWlanPowerState = WLAN_POWER_STATE_ON;
469 /* Enable foreground scanning */
470 if ((status=wmi_scanparams_cmd(ar->arWmi, fg_start_period,
471 ar->scParams.fg_end_period,
472 ar->scParams.bg_period,
473 ar->scParams.minact_chdwell_time,
474 ar->scParams.maxact_chdwell_time,
475 ar->scParams.pas_chdwell_time,
476 ar->scParams.shortScanRatio,
477 ar->scParams.scanCtrlFlags,
478 ar->scParams.max_dfsch_act_time,
479 ar->scParams.maxact_scan_per_ssid)) != A_OK)
484 if (ar->arNetworkType != AP_NETWORK)
487 if (ar6000_connect_to_ap(ar) != A_OK) {
488 /* no need to report error if connection failed */
493 } else if (state == WLAN_DISABLED){
494 WMI_SET_WOW_MODE_CMD wowMode = { .enable_wow = FALSE };
496 /* Already in deep sleep state.. exit */
497 if (ar->arWlanPowerState != WLAN_POWER_STATE_ON) {
498 if (ar->arWlanPowerState != WLAN_POWER_STATE_DEEP_SLEEP) {
499 AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Strange state when we suspend for deep sleep %d\n", ar->arWlanPowerState));
504 if (ar->arNetworkType != AP_NETWORK)
506 /* Disconnect from the AP and disable foreground scanning */
507 AR6000_SPIN_LOCK(&ar->arLock, 0);
508 if (ar->arConnected == TRUE || ar->arConnectPending == TRUE) {
509 AR6000_SPIN_UNLOCK(&ar->arLock, 0);
510 wmi_disconnect_cmd(ar->arWmi);
512 AR6000_SPIN_UNLOCK(&ar->arLock, 0);
516 ar->scan_triggered = 0;
518 if ((status=wmi_scanparams_cmd(ar->arWmi, 0xFFFF, 0, 0, 0, 0, 0, 0, 0, 0, 0)) != A_OK) {
522 /* make sure we disable wow for deep sleep */
523 if ((status=wmi_set_wow_mode_cmd(ar->arWmi, &wowMode))!=A_OK)
528 ar6000_TxDataCleanup(ar);
529 #ifndef ATH6K_CONFIG_OTA_MODE
530 wmi_powermode_cmd(ar->arWmi, REC_POWER);
533 hostSleepMode.awake = FALSE;
534 hostSleepMode.asleep = TRUE;
535 if ((status=wmi_set_host_sleep_mode_cmd(ar->arWmi, &hostSleepMode))!=A_OK) {
538 if (ar->arTxPending[ar->arControlEp]) {
539 A_UINT32 timeleft = wait_event_interruptible_timeout(arEvent,
540 ar->arTxPending[ar->arControlEp] == 0, wmitimeout * HZ);
541 if (!timeleft || signal_pending(current)) {
546 status = hifWaitForPendingRecv(ar->arHifDevice);
548 ar->arWlanPowerState = WLAN_POWER_STATE_DEEP_SLEEP;
553 AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Fail to enter/exit deep sleep %d\n", state));
560 ar6000_update_wlan_pwr_state(struct ar6_softc *ar, AR6000_WLAN_STATE state, A_BOOL pmEvent)
562 A_STATUS status = A_OK;
563 A_UINT16 powerState, oldPowerState;
564 AR6000_WLAN_STATE oldstate = ar->arWlanState;
565 A_BOOL wlanOff = ar->arWlanOff;
567 A_BOOL btOff = ar->arBTOff;
568 #endif /* CONFIG_PM */
570 if ((state!=WLAN_DISABLED && state!=WLAN_ENABLED)) {
574 if (ar->bIsDestroyProgress) {
578 if (down_interruptible(&ar->arSem)) {
582 if (ar->bIsDestroyProgress) {
587 ar->arWlanState = wlanOff ? WLAN_DISABLED : state;
588 oldPowerState = ar->arWlanPowerState;
589 if (state == WLAN_ENABLED) {
590 powerState = ar->arWlanPowerState;
591 AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("WLAN PWR set to ENABLE^^\n"));
593 if (powerState == WLAN_POWER_STATE_DEEP_SLEEP) {
594 status = ar6000_setup_deep_sleep_state(ar, WLAN_ENABLED);
595 } else if (powerState == WLAN_POWER_STATE_CUT_PWR) {
596 status = ar6000_setup_cut_power_state(ar, WLAN_ENABLED);
600 else if (pmEvent && wlanOff) {
601 A_BOOL allowCutPwr = ((!ar->arBTSharing) || btOff);
602 if ((powerState==WLAN_POWER_STATE_CUT_PWR) && (!allowCutPwr)) {
603 /* Come out of cut power */
604 ar6000_setup_cut_power_state(ar, WLAN_ENABLED);
605 status = ar6000_setup_deep_sleep_state(ar, WLAN_DISABLED);
608 #endif /* CONFIG_PM */
609 } else if (state == WLAN_DISABLED) {
610 AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("WLAN PWR set to DISABLED~\n"));
611 powerState = WLAN_POWER_STATE_DEEP_SLEEP;
613 if (pmEvent) { /* disable due to suspend */
614 A_BOOL suspendCutPwr = (ar->arSuspendConfig == WLAN_SUSPEND_CUT_PWR ||
615 (ar->arSuspendConfig == WLAN_SUSPEND_WOW &&
616 ar->arWow2Config==WLAN_SUSPEND_CUT_PWR));
617 A_BOOL suspendCutIfBtOff = ((ar->arSuspendConfig ==
618 WLAN_SUSPEND_CUT_PWR_IF_BT_OFF ||
619 (ar->arSuspendConfig == WLAN_SUSPEND_WOW &&
620 ar->arWow2Config==WLAN_SUSPEND_CUT_PWR_IF_BT_OFF)) &&
621 (!ar->arBTSharing || btOff));
622 if ((suspendCutPwr) ||
623 (suspendCutIfBtOff) ||
624 (ar->arWlanState==WLAN_POWER_STATE_CUT_PWR))
626 powerState = WLAN_POWER_STATE_CUT_PWR;
630 (ar->arWlanOffConfig == WLAN_OFF_CUT_PWR) &&
631 (!ar->arBTSharing || btOff))
633 /* For BT clock sharing designs, CUT_POWER depend on BT state */
634 powerState = WLAN_POWER_STATE_CUT_PWR;
637 #endif /* CONFIG_PM */
639 if (powerState == WLAN_POWER_STATE_DEEP_SLEEP) {
640 if (ar->arWlanPowerState == WLAN_POWER_STATE_CUT_PWR) {
641 AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("Load firmware before set to deep sleep\n"));
642 ar6000_setup_cut_power_state(ar, WLAN_ENABLED);
644 status = ar6000_setup_deep_sleep_state(ar, WLAN_DISABLED);
645 } else if (powerState == WLAN_POWER_STATE_CUT_PWR) {
646 status = ar6000_setup_cut_power_state(ar, WLAN_DISABLED);
652 AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Fail to setup WLAN state %d\n", ar->arWlanState));
653 ar->arWlanState = oldstate;
654 } else if (status == A_OK) {
655 WMI_REPORT_SLEEP_STATE_EVENT wmiSleepEvent, *pSleepEvent = NULL;
656 if ((ar->arWlanPowerState == WLAN_POWER_STATE_ON) && (oldPowerState != WLAN_POWER_STATE_ON)) {
657 wmiSleepEvent.sleepState = WMI_REPORT_SLEEP_STATUS_IS_AWAKE;
658 pSleepEvent = &wmiSleepEvent;
659 } else if ((ar->arWlanPowerState != WLAN_POWER_STATE_ON) && (oldPowerState == WLAN_POWER_STATE_ON)) {
660 wmiSleepEvent.sleepState = WMI_REPORT_SLEEP_STATUS_IS_DEEP_SLEEP;
661 pSleepEvent = &wmiSleepEvent;
664 AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("SENT WLAN Sleep Event %d\n", wmiSleepEvent.sleepState));
665 ar6000_send_event_to_app(ar, WMI_REPORT_SLEEP_STATE_EVENTID, (A_UINT8*)pSleepEvent,
666 sizeof(WMI_REPORT_SLEEP_STATE_EVENTID));
674 ar6000_set_bt_hw_state(struct ar6_softc *ar, A_UINT32 enable)
677 A_BOOL off = (enable == 0);
679 if (ar->arBTOff == off) {
683 status = ar6000_update_wlan_pwr_state(ar, ar->arWlanOff ? WLAN_DISABLED : WLAN_ENABLED, FALSE);
691 ar6000_set_wlan_state(struct ar6_softc *ar, AR6000_WLAN_STATE state)
694 A_BOOL off = (state == WLAN_DISABLED);
695 if (ar->arWlanOff == off) {
699 status = ar6000_update_wlan_pwr_state(ar, state, FALSE);
703 void ar6000_pm_init()
705 A_REGISTER_MODULE_DEBUG_INFO(pm);
707 #ifdef CONFIG_HAS_WAKELOCK
708 wake_lock_init(&ar6k_suspend_wake_lock, WAKE_LOCK_SUSPEND, "ar6k_suspend");
709 wake_lock_init(&ar6k_wow_wake_lock, WAKE_LOCK_SUSPEND, "ar6k_wow");
712 * Register ar6000_pm_device into system.
713 * We should also add platform_device into the first item of array
714 * of devices[] in file arch/xxx/mach-xxx/board-xxxx.c
716 if (platform_driver_register(&ar6000_pm_device)) {
717 AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("ar6000: fail to register the power control driver.\n"));
719 #endif /* CONFIG_PM */
722 void ar6000_pm_exit()
725 platform_driver_unregister(&ar6000_pm_device);
726 #ifdef CONFIG_HAS_WAKELOCK
727 wake_lock_destroy(&ar6k_suspend_wake_lock);
728 wake_lock_destroy(&ar6k_wow_wake_lock);
730 #endif /* CONFIG_PM */