| /* |
| * |
| * Copyright (c) 2004-2010 Atheros Communications Inc. |
| * All rights reserved. |
| * |
| * |
| // |
| // Permission to use, copy, modify, and/or distribute this software for any |
| // purpose with or without fee is hereby granted, provided that the above |
| // copyright notice and this permission notice appear in all copies. |
| // |
| // THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| // WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| // MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| // ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| // WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| // ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| // OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| // |
| // |
| * |
| */ |
| |
| /* |
| * Implementation of system power management |
| */ |
| |
| #include "ar6000_drv.h" |
| #include <linux/inetdevice.h> |
| #include <linux/platform_device.h> |
| #include "wlan_config.h" |
| |
| #ifdef CONFIG_HAS_WAKELOCK |
| #include <linux/wakelock.h> |
| #endif |
| |
| #define WOW_ENABLE_MAX_INTERVAL 0 |
| #define WOW_SET_SCAN_PARAMS 0 |
| |
| extern unsigned int wmitimeout; |
| extern wait_queue_head_t arEvent; |
| |
| #ifdef CONFIG_PM |
| #ifdef CONFIG_HAS_WAKELOCK |
| struct wake_lock ar6k_suspend_wake_lock; |
| struct wake_lock ar6k_wow_wake_lock; |
| #endif |
| #endif /* CONFIG_PM */ |
| |
| #ifdef ANDROID_ENV |
| extern void android_ar6k_check_wow_status(AR_SOFTC_T *ar, struct sk_buff *skb, A_BOOL isEvent); |
| #endif |
| #undef ATH_MODULE_NAME |
| #define ATH_MODULE_NAME pm |
| #define ATH_DEBUG_PM ATH_DEBUG_MAKE_MODULE_MASK(0) |
| |
| #ifdef DEBUG |
| static ATH_DEBUG_MASK_DESCRIPTION pm_debug_desc[] = { |
| { ATH_DEBUG_PM , "System power management"}, |
| }; |
| |
| ATH_DEBUG_INSTANTIATE_MODULE_VAR(pm, |
| "pm", |
| "System Power Management", |
| ATH_DEBUG_MASK_DEFAULTS | ATH_DEBUG_PM, |
| ATH_DEBUG_DESCRIPTION_COUNT(pm_debug_desc), |
| pm_debug_desc); |
| |
| #endif /* DEBUG */ |
| |
| A_STATUS ar6000_exit_cut_power_state(AR_SOFTC_T *ar); |
| |
| #ifdef CONFIG_PM |
| static void ar6k_send_asleep_event_to_app(AR_SOFTC_T *ar, A_BOOL asleep) |
| { |
| char buf[128]; |
| union iwreq_data wrqu; |
| |
| snprintf(buf, sizeof(buf), "HOST_ASLEEP=%s", asleep ? "asleep" : "awake"); |
| A_MEMZERO(&wrqu, sizeof(wrqu)); |
| wrqu.data.length = strlen(buf); |
| wireless_send_event(ar->arNetDev, IWEVCUSTOM, &wrqu, buf); |
| } |
| |
| static void ar6000_wow_resume(AR_SOFTC_T *ar) |
| { |
| if (ar->arWowState!= WLAN_WOW_STATE_NONE) { |
| A_UINT16 fg_start_period = (ar->scParams.fg_start_period==0) ? 1 : ar->scParams.fg_start_period; |
| A_UINT16 bg_period = (ar->scParams.bg_period==0) ? 60 : ar->scParams.bg_period; |
| WMI_SET_HOST_SLEEP_MODE_CMD hostSleepMode = {TRUE, FALSE}; |
| ar->arWowState = WLAN_WOW_STATE_NONE; |
| #ifdef CONFIG_HAS_WAKELOCK |
| wake_lock_timeout(&ar6k_wow_wake_lock, 3*HZ); |
| #endif |
| if (wmi_set_host_sleep_mode_cmd(ar->arWmi, &hostSleepMode)!=A_OK) { |
| AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Fail to setup restore host awake\n")); |
| } |
| #if WOW_SET_SCAN_PARAMS |
| wmi_scanparams_cmd(ar->arWmi, fg_start_period, |
| ar->scParams.fg_end_period, |
| bg_period, |
| ar->scParams.minact_chdwell_time, |
| ar->scParams.maxact_chdwell_time, |
| ar->scParams.pas_chdwell_time, |
| ar->scParams.shortScanRatio, |
| ar->scParams.scanCtrlFlags, |
| ar->scParams.max_dfsch_act_time, |
| ar->scParams.maxact_scan_per_ssid); |
| #else |
| (void)fg_start_period; |
| (void)bg_period; |
| #endif |
| |
| |
| #if WOW_ENABLE_MAX_INTERVAL /* we don't do it if the power consumption is already good enough. */ |
| if (wmi_listeninterval_cmd(ar->arWmi, ar->arListenIntervalT, ar->arListenIntervalB) == A_OK) { |
| } |
| #endif |
| ar6k_send_asleep_event_to_app(ar, FALSE); |
| AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("Resume WoW successfully\n")); |
| } else { |
| AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("WoW does not invoked. skip resume")); |
| } |
| ar->arWlanPowerState = WLAN_POWER_STATE_ON; |
| } |
| |
| static void ar6000_wow_suspend(AR_SOFTC_T *ar) |
| { |
| #define WOW_LIST_ID 1 |
| if (ar->arNetworkType != AP_NETWORK) { |
| /* Setup WoW for unicast & Arp request for our own IP |
| disable background scan. Set listen interval into 1000 TUs |
| Enable keepliave for 110 seconds |
| */ |
| struct in_ifaddr **ifap = NULL; |
| struct in_ifaddr *ifa = NULL; |
| struct in_device *in_dev; |
| A_UINT8 macMask[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; |
| A_STATUS status; |
| WMI_ADD_WOW_PATTERN_CMD addWowCmd = { .filter = { 0 } }; |
| WMI_DEL_WOW_PATTERN_CMD delWowCmd; |
| WMI_SET_HOST_SLEEP_MODE_CMD hostSleepMode = {FALSE, TRUE}; |
| WMI_SET_WOW_MODE_CMD wowMode = { .enable_wow = TRUE, |
| .hostReqDelay = 500 };/*500 ms delay*/ |
| |
| if (ar->arWowState!= WLAN_WOW_STATE_NONE) { |
| AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("System already go into wow mode!\n")); |
| return; |
| } |
| |
| ar6000_TxDataCleanup(ar); /* IMPORTANT, otherwise there will be 11mA after listen interval as 1000*/ |
| |
| #if WOW_ENABLE_MAX_INTERVAL /* we don't do it if the power consumption is already good enough. */ |
| if (wmi_listeninterval_cmd(ar->arWmi, A_MAX_WOW_LISTEN_INTERVAL, 0) == A_OK) { |
| } |
| #endif |
| |
| #if WOW_SET_SCAN_PARAMS |
| status = wmi_scanparams_cmd(ar->arWmi, 0xFFFF, 0, 0xFFFF, 0, 0, 0, 0, 0, 0, 0); |
| #endif |
| /* clear up our WoW pattern first */ |
| delWowCmd.filter_list_id = WOW_LIST_ID; |
| delWowCmd.filter_id = 0; |
| wmi_del_wow_pattern_cmd(ar->arWmi, &delWowCmd); |
| |
| /* setup unicast packet pattern for WoW */ |
| if (ar->arNetDev->dev_addr[1]) { |
| addWowCmd.filter_list_id = WOW_LIST_ID; |
| addWowCmd.filter_size = 6; /* MAC address */ |
| addWowCmd.filter_offset = 0; |
| status = wmi_add_wow_pattern_cmd(ar->arWmi, &addWowCmd, ar->arNetDev->dev_addr, macMask, addWowCmd.filter_size); |
| if (status != A_OK) { |
| AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Fail to add WoW pattern\n")); |
| } |
| } |
| /* setup ARP request for our own IP */ |
| if ((in_dev = __in_dev_get_rtnl(ar->arNetDev)) != NULL) { |
| for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL; ifap = &ifa->ifa_next) { |
| if (!strcmp(ar->arNetDev->name, ifa->ifa_label)) { |
| break; /* found */ |
| } |
| } |
| } |
| if (ifa && ifa->ifa_local) { |
| WMI_SET_IP_CMD ipCmd; |
| memset(&ipCmd, 0, sizeof(ipCmd)); |
| ipCmd.ips[0] = ifa->ifa_local; |
| status = wmi_set_ip_cmd(ar->arWmi, &ipCmd); |
| if (status != A_OK) { |
| AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Fail to setup IP for ARP agent\n")); |
| } |
| } |
| |
| #ifndef ATH6K_CONFIG_OTA_MODE |
| wmi_powermode_cmd(ar->arWmi, REC_POWER); |
| #endif |
| |
| status = wmi_set_wow_mode_cmd(ar->arWmi, &wowMode); |
| if (status != A_OK) { |
| AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Fail to enable wow mode\n")); |
| } |
| ar6k_send_asleep_event_to_app(ar, TRUE); |
| |
| status = wmi_set_host_sleep_mode_cmd(ar->arWmi, &hostSleepMode); |
| if (status != A_OK) { |
| AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Fail to set host asleep\n")); |
| } |
| |
| ar->arWowState = WLAN_WOW_STATE_SUSPENDING; |
| if (ar->arTxPending[ar->arControlEp]) { |
| A_UINT32 timeleft = wait_event_interruptible_timeout(arEvent, |
| ar->arTxPending[ar->arControlEp] == 0, wmitimeout * HZ); |
| if (!timeleft || signal_pending(current)) { |
| /* what can I do? wow resume at once */ |
| AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Fail to setup WoW. Pending wmi control data %d\n", ar->arTxPending[ar->arControlEp])); |
| } |
| } |
| |
| status = hifWaitForPendingRecv(ar->arHifDevice); |
| |
| ar->arWowState = WLAN_WOW_STATE_SUSPENDED; |
| ar->arWlanPowerState = WLAN_POWER_STATE_WOW; |
| } else { |
| AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Not allowed to go to WOW at this moment.\n")); |
| } |
| } |
| |
| A_STATUS ar6000_suspend_ev(void *context) |
| { |
| A_STATUS status = A_OK; |
| AR_SOFTC_T *ar = (AR_SOFTC_T *)context; |
| A_INT16 pmmode = ar->arSuspendConfig; |
| wow_not_connected: |
| switch (pmmode) { |
| case WLAN_SUSPEND_WOW: |
| if (ar->arWmiReady && ar->arWlanState==WLAN_ENABLED && ar->arConnected) { |
| ar6000_wow_suspend(ar); |
| AR_DEBUG_PRINTF(ATH_DEBUG_PM,("%s:Suspend for wow mode %d\n", __func__, ar->arWlanPowerState)); |
| } else { |
| pmmode = ar->arWow2Config; |
| goto wow_not_connected; |
| } |
| break; |
| case WLAN_SUSPEND_CUT_PWR: |
| /* fall through */ |
| case WLAN_SUSPEND_CUT_PWR_IF_BT_OFF: |
| /* fall through */ |
| case WLAN_SUSPEND_DEEP_SLEEP: |
| /* fall through */ |
| default: |
| status = ar6000_update_wlan_pwr_state(ar, WLAN_DISABLED, TRUE); |
| if (ar->arWlanPowerState==WLAN_POWER_STATE_ON || |
| ar->arWlanPowerState==WLAN_POWER_STATE_WOW) { |
| AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("Strange suspend state for not wow mode %d", ar->arWlanPowerState)); |
| } |
| AR_DEBUG_PRINTF(ATH_DEBUG_PM,("%s:Suspend for %d mode pwr %d status %d\n", __func__, pmmode, ar->arWlanPowerState, status)); |
| status = (ar->arWlanPowerState == WLAN_POWER_STATE_CUT_PWR) ? A_OK : A_EBUSY; |
| break; |
| } |
| |
| ar->scan_triggered = 0; |
| return status; |
| } |
| |
| A_STATUS ar6000_resume_ev(void *context) |
| { |
| AR_SOFTC_T *ar = (AR_SOFTC_T *)context; |
| A_UINT16 powerState = ar->arWlanPowerState; |
| |
| #ifdef CONFIG_HAS_WAKELOCK |
| wake_lock(&ar6k_suspend_wake_lock); |
| #endif |
| AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("%s: enter previous state %d wowState %d\n", __func__, powerState, ar->arWowState)); |
| switch (powerState) { |
| case WLAN_POWER_STATE_WOW: |
| ar6000_wow_resume(ar); |
| break; |
| case WLAN_POWER_STATE_CUT_PWR: |
| /* fall through */ |
| case WLAN_POWER_STATE_DEEP_SLEEP: |
| ar6000_update_wlan_pwr_state(ar, WLAN_ENABLED, TRUE); |
| AR_DEBUG_PRINTF(ATH_DEBUG_PM,("%s:Resume for %d mode pwr %d\n", __func__, powerState, ar->arWlanPowerState)); |
| break; |
| case WLAN_POWER_STATE_ON: |
| break; |
| default: |
| AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Strange SDIO bus power mode!!\n")); |
| break; |
| } |
| #ifdef CONFIG_HAS_WAKELOCK |
| wake_unlock(&ar6k_suspend_wake_lock); |
| #endif |
| return A_OK; |
| } |
| |
| void ar6000_check_wow_status(AR_SOFTC_T *ar, struct sk_buff *skb, A_BOOL isEvent) |
| { |
| if (ar->arWowState!=WLAN_WOW_STATE_NONE) { |
| if (ar->arWowState==WLAN_WOW_STATE_SUSPENDING) { |
| AR_DEBUG_PRINTF(ATH_DEBUG_PM,("\n%s: Received IRQ while we are wow suspending!!!\n\n", __func__)); |
| return; |
| } |
| /* Wow resume from irq interrupt */ |
| AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("%s: WoW resume from irq thread status %d\n", __func__, ar->arWlanPowerState)); |
| ar6000_wow_resume(ar); |
| } else { |
| #ifdef ANDROID_ENV |
| android_ar6k_check_wow_status(ar, skb, isEvent); |
| #endif |
| } |
| } |
| |
| A_STATUS ar6000_power_change_ev(void *context, A_UINT32 config) |
| { |
| AR_SOFTC_T *ar = (AR_SOFTC_T *)context; |
| A_STATUS status = A_OK; |
| |
| AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("%s: power change event callback %d \n", __func__, config)); |
| switch (config) { |
| case HIF_DEVICE_POWER_UP: |
| ar6000_restart_endpoint(ar->arNetDev); |
| status = A_OK; |
| break; |
| case HIF_DEVICE_POWER_DOWN: |
| case HIF_DEVICE_POWER_CUT: |
| status = A_OK; |
| break; |
| } |
| return status; |
| } |
| |
| static int ar6000_pm_probe(struct platform_device *pdev) |
| { |
| plat_setup_power(1,1); |
| return 0; |
| } |
| |
| static int ar6000_pm_remove(struct platform_device *pdev) |
| { |
| plat_setup_power(0,1); |
| return 0; |
| } |
| |
| static int ar6000_pm_suspend(struct platform_device *pdev, pm_message_t state) |
| { |
| return 0; |
| } |
| |
| static int ar6000_pm_resume(struct platform_device *pdev) |
| { |
| return 0; |
| } |
| |
| static struct platform_driver ar6000_pm_device = { |
| .probe = ar6000_pm_probe, |
| .remove = ar6000_pm_remove, |
| .suspend = ar6000_pm_suspend, |
| .resume = ar6000_pm_resume, |
| .driver = { |
| .name = "wlan_ar6000_pm", |
| }, |
| }; |
| #endif /* CONFIG_PM */ |
| |
| A_STATUS |
| ar6000_setup_cut_power_state(struct ar6_softc *ar, AR6000_WLAN_STATE state) |
| { |
| A_STATUS status = A_OK; |
| HIF_DEVICE_POWER_CHANGE_TYPE config; |
| |
| AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("%s: Cut power %d %d \n", __func__,state, ar->arWlanPowerState)); |
| #ifdef CONFIG_PM |
| AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("Wlan OFF %d BT OFf %d \n", ar->arWlanOff, ar->arBTOff)); |
| #endif |
| do { |
| if (state == WLAN_ENABLED) { |
| /* Not in cut power state.. exit */ |
| if (ar->arWlanPowerState != WLAN_POWER_STATE_CUT_PWR) { |
| break; |
| } |
| |
| plat_setup_power(1,0); |
| |
| /* Change the state to ON */ |
| ar->arWlanPowerState = WLAN_POWER_STATE_ON; |
| |
| |
| /* Indicate POWER_UP to HIF */ |
| config = HIF_DEVICE_POWER_UP; |
| status = HIFConfigureDevice(ar->arHifDevice, |
| HIF_DEVICE_POWER_STATE_CHANGE, |
| &config, |
| sizeof(HIF_DEVICE_POWER_CHANGE_TYPE)); |
| |
| if (status == A_PENDING) { |
| #ifdef ANDROID_ENV |
| /* Wait for WMI ready event */ |
| A_UINT32 timeleft = wait_event_interruptible_timeout(arEvent, |
| (ar->arWmiReady == TRUE), wmitimeout * HZ); |
| if (!timeleft || signal_pending(current)) { |
| AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("ar6000 : Failed to get wmi ready \n")); |
| status = A_ERROR; |
| break; |
| } |
| #endif |
| status = A_OK; |
| } else if (status == A_OK) { |
| ar6000_restart_endpoint(ar->arNetDev); |
| status = A_OK; |
| } |
| } else if (state == WLAN_DISABLED) { |
| |
| |
| /* Already in cut power state.. exit */ |
| if (ar->arWlanPowerState == WLAN_POWER_STATE_CUT_PWR) { |
| break; |
| } |
| ar6000_stop_endpoint(ar->arNetDev, TRUE, FALSE); |
| |
| config = HIF_DEVICE_POWER_CUT; |
| status = HIFConfigureDevice(ar->arHifDevice, |
| HIF_DEVICE_POWER_STATE_CHANGE, |
| &config, |
| sizeof(HIF_DEVICE_POWER_CHANGE_TYPE)); |
| |
| plat_setup_power(0,0); |
| |
| ar->arWlanPowerState = WLAN_POWER_STATE_CUT_PWR; |
| } |
| } while (0); |
| |
| return status; |
| } |
| |
| A_STATUS |
| ar6000_setup_deep_sleep_state(struct ar6_softc *ar, AR6000_WLAN_STATE state) |
| { |
| A_STATUS status = A_OK; |
| |
| AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("%s: Deep sleep %d %d \n", __func__,state, ar->arWlanPowerState)); |
| #ifdef CONFIG_PM |
| AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("Wlan OFF %d BT OFf %d \n", ar->arWlanOff, ar->arBTOff)); |
| #endif |
| do { |
| WMI_SET_HOST_SLEEP_MODE_CMD hostSleepMode; |
| |
| if (state == WLAN_ENABLED) { |
| A_UINT16 fg_start_period; |
| |
| /* Not in deep sleep state.. exit */ |
| if (ar->arWlanPowerState != WLAN_POWER_STATE_DEEP_SLEEP) { |
| if (ar->arWlanPowerState != WLAN_POWER_STATE_ON) { |
| AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Strange state when we resume from deep sleep %d\n", ar->arWlanPowerState)); |
| } |
| break; |
| } |
| |
| fg_start_period = (ar->scParams.fg_start_period==0) ? 1 : ar->scParams.fg_start_period; |
| hostSleepMode.awake = TRUE; |
| hostSleepMode.asleep = FALSE; |
| |
| if ((status=wmi_set_host_sleep_mode_cmd(ar->arWmi, &hostSleepMode)) != A_OK) { |
| break; |
| } |
| |
| /* Change the state to ON */ |
| ar->arWlanPowerState = WLAN_POWER_STATE_ON; |
| |
| /* Enable foreground scanning */ |
| if ((status=wmi_scanparams_cmd(ar->arWmi, fg_start_period, |
| ar->scParams.fg_end_period, |
| ar->scParams.bg_period, |
| ar->scParams.minact_chdwell_time, |
| ar->scParams.maxact_chdwell_time, |
| ar->scParams.pas_chdwell_time, |
| ar->scParams.shortScanRatio, |
| ar->scParams.scanCtrlFlags, |
| ar->scParams.max_dfsch_act_time, |
| ar->scParams.maxact_scan_per_ssid)) != A_OK) |
| { |
| break; |
| } |
| |
| if (ar->arNetworkType != AP_NETWORK) |
| { |
| if (ar->arSsidLen) { |
| if (ar6000_connect_to_ap(ar) != A_OK) { |
| /* no need to report error if connection failed */ |
| break; |
| } |
| } |
| } |
| } else if (state == WLAN_DISABLED){ |
| WMI_SET_WOW_MODE_CMD wowMode = { .enable_wow = FALSE }; |
| |
| /* Already in deep sleep state.. exit */ |
| if (ar->arWlanPowerState != WLAN_POWER_STATE_ON) { |
| if (ar->arWlanPowerState != WLAN_POWER_STATE_DEEP_SLEEP) { |
| AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Strange state when we suspend for deep sleep %d\n", ar->arWlanPowerState)); |
| } |
| break; |
| } |
| |
| if (ar->arNetworkType != AP_NETWORK) |
| { |
| /* Disconnect from the AP and disable foreground scanning */ |
| AR6000_SPIN_LOCK(&ar->arLock, 0); |
| if (ar->arConnected == TRUE || ar->arConnectPending == TRUE) { |
| AR6000_SPIN_UNLOCK(&ar->arLock, 0); |
| wmi_disconnect_cmd(ar->arWmi); |
| } else { |
| AR6000_SPIN_UNLOCK(&ar->arLock, 0); |
| } |
| } |
| |
| ar->scan_triggered = 0; |
| |
| if ((status=wmi_scanparams_cmd(ar->arWmi, 0xFFFF, 0, 0, 0, 0, 0, 0, 0, 0, 0)) != A_OK) { |
| break; |
| } |
| |
| /* make sure we disable wow for deep sleep */ |
| if ((status=wmi_set_wow_mode_cmd(ar->arWmi, &wowMode))!=A_OK) |
| { |
| break; |
| } |
| |
| ar6000_TxDataCleanup(ar); |
| #ifndef ATH6K_CONFIG_OTA_MODE |
| wmi_powermode_cmd(ar->arWmi, REC_POWER); |
| #endif |
| |
| hostSleepMode.awake = FALSE; |
| hostSleepMode.asleep = TRUE; |
| if ((status=wmi_set_host_sleep_mode_cmd(ar->arWmi, &hostSleepMode))!=A_OK) { |
| break; |
| } |
| if (ar->arTxPending[ar->arControlEp]) { |
| A_UINT32 timeleft = wait_event_interruptible_timeout(arEvent, |
| ar->arTxPending[ar->arControlEp] == 0, wmitimeout * HZ); |
| if (!timeleft || signal_pending(current)) { |
| status = A_ERROR; |
| break; |
| } |
| } |
| status = hifWaitForPendingRecv(ar->arHifDevice); |
| |
| ar->arWlanPowerState = WLAN_POWER_STATE_DEEP_SLEEP; |
| } |
| } while (0); |
| |
| if (status!=A_OK) { |
| AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Fail to enter/exit deep sleep %d\n", state)); |
| } |
| |
| return status; |
| } |
| |
| A_STATUS |
| ar6000_update_wlan_pwr_state(struct ar6_softc *ar, AR6000_WLAN_STATE state, A_BOOL pmEvent) |
| { |
| A_STATUS status = A_OK; |
| A_UINT16 powerState, oldPowerState; |
| AR6000_WLAN_STATE oldstate = ar->arWlanState; |
| A_BOOL wlanOff = ar->arWlanOff; |
| #ifdef CONFIG_PM |
| A_BOOL btOff = ar->arBTOff; |
| #endif /* CONFIG_PM */ |
| |
| if ((state!=WLAN_DISABLED && state!=WLAN_ENABLED)) { |
| return A_ERROR; |
| } |
| |
| if (ar->bIsDestroyProgress) { |
| return A_EBUSY; |
| } |
| |
| if (down_interruptible(&ar->arSem)) { |
| return A_ERROR; |
| } |
| |
| if (ar->bIsDestroyProgress) { |
| up(&ar->arSem); |
| return A_EBUSY; |
| } |
| |
| ar->arWlanState = wlanOff ? WLAN_DISABLED : state; |
| oldPowerState = ar->arWlanPowerState; |
| if (state == WLAN_ENABLED) { |
| powerState = ar->arWlanPowerState; |
| AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("WLAN PWR set to ENABLE^^\n")); |
| if (!wlanOff) { |
| if (powerState == WLAN_POWER_STATE_DEEP_SLEEP) { |
| status = ar6000_setup_deep_sleep_state(ar, WLAN_ENABLED); |
| } else if (powerState == WLAN_POWER_STATE_CUT_PWR) { |
| status = ar6000_setup_cut_power_state(ar, WLAN_ENABLED); |
| } |
| } |
| #ifdef CONFIG_PM |
| else if (pmEvent && wlanOff) { |
| A_BOOL allowCutPwr = ((!ar->arBTSharing) || btOff); |
| if ((powerState==WLAN_POWER_STATE_CUT_PWR) && (!allowCutPwr)) { |
| /* Come out of cut power */ |
| ar6000_setup_cut_power_state(ar, WLAN_ENABLED); |
| status = ar6000_setup_deep_sleep_state(ar, WLAN_DISABLED); |
| } |
| } |
| #endif /* CONFIG_PM */ |
| } else if (state == WLAN_DISABLED) { |
| AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("WLAN PWR set to DISABLED~\n")); |
| powerState = WLAN_POWER_STATE_DEEP_SLEEP; |
| #ifdef CONFIG_PM |
| if (pmEvent) { /* disable due to suspend */ |
| A_BOOL suspendCutPwr = (ar->arSuspendConfig == WLAN_SUSPEND_CUT_PWR || |
| (ar->arSuspendConfig == WLAN_SUSPEND_WOW && |
| ar->arWow2Config==WLAN_SUSPEND_CUT_PWR)); |
| A_BOOL suspendCutIfBtOff = ((ar->arSuspendConfig == |
| WLAN_SUSPEND_CUT_PWR_IF_BT_OFF || |
| (ar->arSuspendConfig == WLAN_SUSPEND_WOW && |
| ar->arWow2Config==WLAN_SUSPEND_CUT_PWR_IF_BT_OFF)) && |
| (!ar->arBTSharing || btOff)); |
| if ((suspendCutPwr) || |
| (suspendCutIfBtOff) || |
| (ar->arWlanState==WLAN_POWER_STATE_CUT_PWR)) |
| { |
| powerState = WLAN_POWER_STATE_CUT_PWR; |
| } |
| } else { |
| if ((wlanOff) && |
| (ar->arWlanOffConfig == WLAN_OFF_CUT_PWR) && |
| (!ar->arBTSharing || btOff)) |
| { |
| /* For BT clock sharing designs, CUT_POWER depend on BT state */ |
| powerState = WLAN_POWER_STATE_CUT_PWR; |
| } |
| } |
| #endif /* CONFIG_PM */ |
| |
| if (powerState == WLAN_POWER_STATE_DEEP_SLEEP) { |
| if (ar->arWlanPowerState == WLAN_POWER_STATE_CUT_PWR) { |
| AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("Load firmware before set to deep sleep\n")); |
| ar6000_setup_cut_power_state(ar, WLAN_ENABLED); |
| } |
| status = ar6000_setup_deep_sleep_state(ar, WLAN_DISABLED); |
| } else if (powerState == WLAN_POWER_STATE_CUT_PWR) { |
| status = ar6000_setup_cut_power_state(ar, WLAN_DISABLED); |
| } |
| |
| } |
| |
| if (status!=A_OK) { |
| AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Fail to setup WLAN state %d\n", ar->arWlanState)); |
| ar->arWlanState = oldstate; |
| } else if (status == A_OK) { |
| WMI_REPORT_SLEEP_STATE_EVENT wmiSleepEvent, *pSleepEvent = NULL; |
| if ((ar->arWlanPowerState == WLAN_POWER_STATE_ON) && (oldPowerState != WLAN_POWER_STATE_ON)) { |
| wmiSleepEvent.sleepState = WMI_REPORT_SLEEP_STATUS_IS_AWAKE; |
| pSleepEvent = &wmiSleepEvent; |
| } else if ((ar->arWlanPowerState != WLAN_POWER_STATE_ON) && (oldPowerState == WLAN_POWER_STATE_ON)) { |
| wmiSleepEvent.sleepState = WMI_REPORT_SLEEP_STATUS_IS_DEEP_SLEEP; |
| pSleepEvent = &wmiSleepEvent; |
| } |
| if (pSleepEvent) { |
| AR_DEBUG_PRINTF(ATH_DEBUG_PM, ("SENT WLAN Sleep Event %d\n", wmiSleepEvent.sleepState)); |
| ar6000_send_event_to_app(ar, WMI_REPORT_SLEEP_STATE_EVENTID, (A_UINT8*)pSleepEvent, |
| sizeof(WMI_REPORT_SLEEP_STATE_EVENTID)); |
| } |
| } |
| up(&ar->arSem); |
| return status; |
| } |
| |
| A_STATUS |
| ar6000_set_bt_hw_state(struct ar6_softc *ar, A_UINT32 enable) |
| { |
| #ifdef CONFIG_PM |
| A_BOOL off = (enable == 0); |
| A_STATUS status; |
| if (ar->arBTOff == off) { |
| return A_OK; |
| } |
| ar->arBTOff = off; |
| status = ar6000_update_wlan_pwr_state(ar, ar->arWlanOff ? WLAN_DISABLED : WLAN_ENABLED, FALSE); |
| return status; |
| #else |
| return A_OK; |
| #endif |
| } |
| |
| A_STATUS |
| ar6000_set_wlan_state(struct ar6_softc *ar, AR6000_WLAN_STATE state) |
| { |
| A_STATUS status; |
| A_BOOL off = (state == WLAN_DISABLED); |
| if (ar->arWlanOff == off) { |
| return A_OK; |
| } |
| ar->arWlanOff = off; |
| status = ar6000_update_wlan_pwr_state(ar, state, FALSE); |
| return status; |
| } |
| |
| void ar6000_pm_init() |
| { |
| A_REGISTER_MODULE_DEBUG_INFO(pm); |
| #ifdef CONFIG_PM |
| #ifdef CONFIG_HAS_WAKELOCK |
| wake_lock_init(&ar6k_suspend_wake_lock, WAKE_LOCK_SUSPEND, "ar6k_suspend"); |
| wake_lock_init(&ar6k_wow_wake_lock, WAKE_LOCK_SUSPEND, "ar6k_wow"); |
| #endif |
| /* |
| * Register ar6000_pm_device into system. |
| * We should also add platform_device into the first item of array |
| * of devices[] in file arch/xxx/mach-xxx/board-xxxx.c |
| */ |
| if (platform_driver_register(&ar6000_pm_device)) { |
| AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("ar6000: fail to register the power control driver.\n")); |
| } |
| #endif /* CONFIG_PM */ |
| } |
| |
| void ar6000_pm_exit() |
| { |
| #ifdef CONFIG_PM |
| platform_driver_unregister(&ar6000_pm_device); |
| #ifdef CONFIG_HAS_WAKELOCK |
| wake_lock_destroy(&ar6k_suspend_wake_lock); |
| wake_lock_destroy(&ar6k_wow_wake_lock); |
| #endif |
| #endif /* CONFIG_PM */ |
| } |
