drivers/staging/rtl8188eu/core/rtw_led.c

/******************************************************************************
 *
 * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 *
 ******************************************************************************/

#include <drv_types.h>
#include "rtw_led.h"

/*  */
/*	Description: */
/*		Callback function of LED BlinkTimer, */
/*		it just schedules to corresponding BlinkWorkItem/led_blink_hdl */
/*  */
void BlinkTimerCallback(unsigned long data)
{
	struct LED_871x *pLed = (struct LED_871x *)data;
	struct adapter *padapter = pLed->padapter;

	if ((padapter->bSurpriseRemoved) || (padapter->bDriverStopped))
		return;

	schedule_work(&(pLed->BlinkWorkItem));
}

/*  */
/*	Description: */
/*		Callback function of LED BlinkWorkItem. */
/*  */
void BlinkWorkItemCallback(struct work_struct *work)
{
	struct LED_871x *pLed = container_of(work, struct LED_871x, BlinkWorkItem);
	BlinkHandler(pLed);
}

/*  */
/*	Description: */
/*		Reset status of LED_871x object. */
/*  */
void ResetLedStatus(struct LED_871x *pLed)
{
	pLed->CurrLedState = RTW_LED_OFF; /*  Current LED state. */
	pLed->bLedOn = false; /*  true if LED is ON, false if LED is OFF. */

	pLed->bLedBlinkInProgress = false; /*  true if it is blinking, false o.w.. */
	pLed->bLedWPSBlinkInProgress = false;

	pLed->BlinkTimes = 0; /*  Number of times to toggle led state for blinking. */
	pLed->BlinkingLedState = LED_UNKNOWN; /*  Next state for blinking, either RTW_LED_ON or RTW_LED_OFF are. */

	pLed->bLedNoLinkBlinkInProgress = false;
	pLed->bLedLinkBlinkInProgress = false;
	pLed->bLedStartToLinkBlinkInProgress = false;
	pLed->bLedScanBlinkInProgress = false;
}

/*Description: */
/*		Initialize an LED_871x object. */
void InitLed871x(struct adapter *padapter, struct LED_871x *pLed)
{
	pLed->padapter = padapter;

	ResetLedStatus(pLed);

	setup_timer(&(pLed->BlinkTimer), BlinkTimerCallback,
		    (unsigned long)pLed);

	INIT_WORK(&(pLed->BlinkWorkItem), BlinkWorkItemCallback);
}


/*  */
/*	Description: */
/*		DeInitialize an LED_871x object. */
/*  */
void DeInitLed871x(struct LED_871x *pLed)
{
	cancel_work_sync(&(pLed->BlinkWorkItem));
	del_timer_sync(&(pLed->BlinkTimer));
	ResetLedStatus(pLed);
}

/*  */
/*	Description: */
/*		Implementation of LED blinking behavior. */
/*		It toggle off LED and schedule corresponding timer if necessary. */
/*  */

static void SwLedBlink1(struct LED_871x *pLed)
{
	struct adapter *padapter = pLed->padapter;
	struct mlme_priv *pmlmepriv = &(padapter->mlmepriv);
	u8 bStopBlinking = false;

	/*  Change LED according to BlinkingLedState specified. */
	if (pLed->BlinkingLedState == RTW_LED_ON) {
		SwLedOn(padapter, pLed);
		RT_TRACE(_module_rtl8712_led_c_, _drv_info_, ("Blinktimes (%d): turn on\n", pLed->BlinkTimes));
	} else {
		SwLedOff(padapter, pLed);
		RT_TRACE(_module_rtl8712_led_c_, _drv_info_, ("Blinktimes (%d): turn off\n", pLed->BlinkTimes));
	}

	if (padapter->pwrctrlpriv.rf_pwrstate != rf_on) {
		SwLedOff(padapter, pLed);
		ResetLedStatus(pLed);
		return;
	}

	switch (pLed->CurrLedState) {
	case LED_BLINK_SLOWLY:
		if (pLed->bLedOn)
			pLed->BlinkingLedState = RTW_LED_OFF;
		else
			pLed->BlinkingLedState = RTW_LED_ON;
		mod_timer(&pLed->BlinkTimer, jiffies +
			  msecs_to_jiffies(LED_BLINK_NO_LINK_INTERVAL_ALPHA));
		break;
	case LED_BLINK_NORMAL:
		if (pLed->bLedOn)
			pLed->BlinkingLedState = RTW_LED_OFF;
		else
			pLed->BlinkingLedState = RTW_LED_ON;
		mod_timer(&pLed->BlinkTimer, jiffies +
			  msecs_to_jiffies(LED_BLINK_LINK_INTERVAL_ALPHA));
		break;
	case LED_BLINK_SCAN:
		pLed->BlinkTimes--;
		if (pLed->BlinkTimes == 0)
			bStopBlinking = true;
		if (bStopBlinking) {
			if (check_fwstate(pmlmepriv, _FW_LINKED)) {
				pLed->bLedLinkBlinkInProgress = true;
				pLed->CurrLedState = LED_BLINK_NORMAL;
				if (pLed->bLedOn)
					pLed->BlinkingLedState = RTW_LED_OFF;
				else
					pLed->BlinkingLedState = RTW_LED_ON;
				mod_timer(&pLed->BlinkTimer, jiffies +
					  msecs_to_jiffies(LED_BLINK_LINK_INTERVAL_ALPHA));
				RT_TRACE(_module_rtl8712_led_c_, _drv_info_, ("CurrLedState %d\n", pLed->CurrLedState));
			} else if (!check_fwstate(pmlmepriv, _FW_LINKED)) {
				pLed->bLedNoLinkBlinkInProgress = true;
				pLed->CurrLedState = LED_BLINK_SLOWLY;
				if (pLed->bLedOn)
					pLed->BlinkingLedState = RTW_LED_OFF;
				else
					pLed->BlinkingLedState = RTW_LED_ON;
				mod_timer(&pLed->BlinkTimer, jiffies +
					  msecs_to_jiffies(LED_BLINK_NO_LINK_INTERVAL_ALPHA));
				RT_TRACE(_module_rtl8712_led_c_, _drv_info_, ("CurrLedState %d\n", pLed->CurrLedState));
			}
			pLed->bLedScanBlinkInProgress = false;
		} else {
			if (pLed->bLedOn)
				pLed->BlinkingLedState = RTW_LED_OFF;
			else
				pLed->BlinkingLedState = RTW_LED_ON;
			mod_timer(&pLed->BlinkTimer, jiffies +
				  msecs_to_jiffies(LED_BLINK_SCAN_INTERVAL_ALPHA));
		}
		break;
	case LED_BLINK_TXRX:
		pLed->BlinkTimes--;
		if (pLed->BlinkTimes == 0)
			bStopBlinking = true;
		if (bStopBlinking) {
			if (check_fwstate(pmlmepriv, _FW_LINKED)) {
				pLed->bLedLinkBlinkInProgress = true;
				pLed->CurrLedState = LED_BLINK_NORMAL;
				if (pLed->bLedOn)
					pLed->BlinkingLedState = RTW_LED_OFF;
				else
					pLed->BlinkingLedState = RTW_LED_ON;
				mod_timer(&pLed->BlinkTimer, jiffies +
					  msecs_to_jiffies(LED_BLINK_LINK_INTERVAL_ALPHA));
				RT_TRACE(_module_rtl8712_led_c_, _drv_info_, ("CurrLedState %d\n", pLed->CurrLedState));
			} else if (!check_fwstate(pmlmepriv, _FW_LINKED)) {
				pLed->bLedNoLinkBlinkInProgress = true;
				pLed->CurrLedState = LED_BLINK_SLOWLY;
				if (pLed->bLedOn)
					pLed->BlinkingLedState = RTW_LED_OFF;
				else
					pLed->BlinkingLedState = RTW_LED_ON;
				mod_timer(&pLed->BlinkTimer, jiffies +
					  msecs_to_jiffies(LED_BLINK_NO_LINK_INTERVAL_ALPHA));
				RT_TRACE(_module_rtl8712_led_c_, _drv_info_, ("CurrLedState %d\n", pLed->CurrLedState));
			}
			pLed->BlinkTimes = 0;
			pLed->bLedBlinkInProgress = false;
		} else {
			if (pLed->bLedOn)
				pLed->BlinkingLedState = RTW_LED_OFF;
			else
				pLed->BlinkingLedState = RTW_LED_ON;
			mod_timer(&pLed->BlinkTimer, jiffies +
				  msecs_to_jiffies(LED_BLINK_FASTER_INTERVAL_ALPHA));
		}
		break;
	case LED_BLINK_WPS:
		if (pLed->bLedOn)
			pLed->BlinkingLedState = RTW_LED_OFF;
		else
			pLed->BlinkingLedState = RTW_LED_ON;
		mod_timer(&pLed->BlinkTimer, jiffies +
			  msecs_to_jiffies(LED_BLINK_SCAN_INTERVAL_ALPHA));
		break;
	case LED_BLINK_WPS_STOP:	/* WPS success */
		if (pLed->BlinkingLedState == RTW_LED_ON)
			bStopBlinking = false;
		else
			bStopBlinking = true;

		if (bStopBlinking) {
			pLed->bLedLinkBlinkInProgress = true;
			pLed->CurrLedState = LED_BLINK_NORMAL;
			if (pLed->bLedOn)
				pLed->BlinkingLedState = RTW_LED_OFF;
			else
				pLed->BlinkingLedState = RTW_LED_ON;
			mod_timer(&pLed->BlinkTimer, jiffies +
				  msecs_to_jiffies(LED_BLINK_LINK_INTERVAL_ALPHA));
			RT_TRACE(_module_rtl8712_led_c_, _drv_info_, ("CurrLedState %d\n", pLed->CurrLedState));

			pLed->bLedWPSBlinkInProgress = false;
		} else {
			pLed->BlinkingLedState = RTW_LED_OFF;
			mod_timer(&pLed->BlinkTimer, jiffies +
				  msecs_to_jiffies(LED_BLINK_WPS_SUCCESS_INTERVAL_ALPHA));
		}
		break;
	default:
		break;
	}
}

 /* ALPHA, added by chiyoko, 20090106 */
static void SwLedControlMode1(struct adapter *padapter, enum LED_CTL_MODE LedAction)
{
	struct led_priv *ledpriv = &(padapter->ledpriv);
	struct LED_871x *pLed = &(ledpriv->SwLed0);
	struct mlme_priv *pmlmepriv = &(padapter->mlmepriv);

	switch (LedAction) {
	case LED_CTL_POWER_ON:
	case LED_CTL_START_TO_LINK:
	case LED_CTL_NO_LINK:
		if (!pLed->bLedNoLinkBlinkInProgress) {
			if (pLed->CurrLedState == LED_BLINK_SCAN || IS_LED_WPS_BLINKING(pLed))
				return;
			if (pLed->bLedLinkBlinkInProgress) {
				del_timer_sync(&(pLed->BlinkTimer));
				pLed->bLedLinkBlinkInProgress = false;
			}
			if (pLed->bLedBlinkInProgress) {
				del_timer_sync(&(pLed->BlinkTimer));
				pLed->bLedBlinkInProgress = false;
			}

			pLed->bLedNoLinkBlinkInProgress = true;
			pLed->CurrLedState = LED_BLINK_SLOWLY;
			if (pLed->bLedOn)
				pLed->BlinkingLedState = RTW_LED_OFF;
			else
				pLed->BlinkingLedState = RTW_LED_ON;
			mod_timer(&pLed->BlinkTimer, jiffies +
				  msecs_to_jiffies(LED_BLINK_NO_LINK_INTERVAL_ALPHA));
		}
		break;
	case LED_CTL_LINK:
		if (!pLed->bLedLinkBlinkInProgress) {
			if (pLed->CurrLedState == LED_BLINK_SCAN || IS_LED_WPS_BLINKING(pLed))
				return;
			if (pLed->bLedNoLinkBlinkInProgress) {
				del_timer_sync(&(pLed->BlinkTimer));
				pLed->bLedNoLinkBlinkInProgress = false;
			}
			if (pLed->bLedBlinkInProgress) {
				del_timer_sync(&(pLed->BlinkTimer));
				pLed->bLedBlinkInProgress = false;
			}
			pLed->bLedLinkBlinkInProgress = true;
			pLed->CurrLedState = LED_BLINK_NORMAL;
			if (pLed->bLedOn)
				pLed->BlinkingLedState = RTW_LED_OFF;
			else
				pLed->BlinkingLedState = RTW_LED_ON;
			mod_timer(&pLed->BlinkTimer, jiffies +
				  msecs_to_jiffies(LED_BLINK_LINK_INTERVAL_ALPHA));
		}
		break;
	case LED_CTL_SITE_SURVEY:
		if ((pmlmepriv->LinkDetectInfo.bBusyTraffic) && (check_fwstate(pmlmepriv, _FW_LINKED))) {
			;
		} else if (!pLed->bLedScanBlinkInProgress) {
			if (IS_LED_WPS_BLINKING(pLed))
				return;
			if (pLed->bLedNoLinkBlinkInProgress) {
				del_timer_sync(&(pLed->BlinkTimer));
				pLed->bLedNoLinkBlinkInProgress = false;
			}
			if (pLed->bLedLinkBlinkInProgress) {
				del_timer_sync(&(pLed->BlinkTimer));
				 pLed->bLedLinkBlinkInProgress = false;
			}
			if (pLed->bLedBlinkInProgress) {
				del_timer_sync(&(pLed->BlinkTimer));
				pLed->bLedBlinkInProgress = false;
			}
			pLed->bLedScanBlinkInProgress = true;
			pLed->CurrLedState = LED_BLINK_SCAN;
			pLed->BlinkTimes = 24;
			if (pLed->bLedOn)
				pLed->BlinkingLedState = RTW_LED_OFF;
			else
				pLed->BlinkingLedState = RTW_LED_ON;
			mod_timer(&pLed->BlinkTimer, jiffies +
				  msecs_to_jiffies(LED_BLINK_SCAN_INTERVAL_ALPHA));
		 }
		break;
	case LED_CTL_TX:
	case LED_CTL_RX:
		if (!pLed->bLedBlinkInProgress) {
			if (pLed->CurrLedState == LED_BLINK_SCAN || IS_LED_WPS_BLINKING(pLed))
				return;
			if (pLed->bLedNoLinkBlinkInProgress) {
				del_timer_sync(&(pLed->BlinkTimer));
				pLed->bLedNoLinkBlinkInProgress = false;
			}
			if (pLed->bLedLinkBlinkInProgress) {
				del_timer_sync(&(pLed->BlinkTimer));
				pLed->bLedLinkBlinkInProgress = false;
			}
			pLed->bLedBlinkInProgress = true;
			pLed->CurrLedState = LED_BLINK_TXRX;
			pLed->BlinkTimes = 2;
			if (pLed->bLedOn)
				pLed->BlinkingLedState = RTW_LED_OFF;
			else
				pLed->BlinkingLedState = RTW_LED_ON;
			mod_timer(&pLed->BlinkTimer, jiffies +
				  msecs_to_jiffies(LED_BLINK_FASTER_INTERVAL_ALPHA));
		}
		break;
	case LED_CTL_START_WPS: /* wait until xinpin finish */
	case LED_CTL_START_WPS_BOTTON:
		 if (!pLed->bLedWPSBlinkInProgress) {
			if (pLed->bLedNoLinkBlinkInProgress) {
				del_timer_sync(&(pLed->BlinkTimer));
				pLed->bLedNoLinkBlinkInProgress = false;
			}
			if (pLed->bLedLinkBlinkInProgress) {
				del_timer_sync(&(pLed->BlinkTimer));
				 pLed->bLedLinkBlinkInProgress = false;
			}
			if (pLed->bLedBlinkInProgress) {
				del_timer_sync(&(pLed->BlinkTimer));
				pLed->bLedBlinkInProgress = false;
			}
			if (pLed->bLedScanBlinkInProgress) {
				del_timer_sync(&(pLed->BlinkTimer));
				pLed->bLedScanBlinkInProgress = false;
			}
			pLed->bLedWPSBlinkInProgress = true;
			pLed->CurrLedState = LED_BLINK_WPS;
			if (pLed->bLedOn)
				pLed->BlinkingLedState = RTW_LED_OFF;
			else
				pLed->BlinkingLedState = RTW_LED_ON;
			mod_timer(&pLed->BlinkTimer, jiffies +
				  msecs_to_jiffies(LED_BLINK_SCAN_INTERVAL_ALPHA));
		 }
		break;
	case LED_CTL_STOP_WPS:
		if (pLed->bLedNoLinkBlinkInProgress) {
			del_timer_sync(&(pLed->BlinkTimer));
			pLed->bLedNoLinkBlinkInProgress = false;
		}
		if (pLed->bLedLinkBlinkInProgress) {
			del_timer_sync(&(pLed->BlinkTimer));
			 pLed->bLedLinkBlinkInProgress = false;
		}
		if (pLed->bLedBlinkInProgress) {
			del_timer_sync(&(pLed->BlinkTimer));
			pLed->bLedBlinkInProgress = false;
		}
		if (pLed->bLedScanBlinkInProgress) {
			del_timer_sync(&(pLed->BlinkTimer));
			pLed->bLedScanBlinkInProgress = false;
		}
		if (pLed->bLedWPSBlinkInProgress)
			del_timer_sync(&(pLed->BlinkTimer));
		else
			pLed->bLedWPSBlinkInProgress = true;
		pLed->CurrLedState = LED_BLINK_WPS_STOP;
		if (pLed->bLedOn) {
			pLed->BlinkingLedState = RTW_LED_OFF;
			mod_timer(&pLed->BlinkTimer, jiffies +
				  msecs_to_jiffies(LED_BLINK_WPS_SUCCESS_INTERVAL_ALPHA));
		} else {
			pLed->BlinkingLedState = RTW_LED_ON;
			mod_timer(&pLed->BlinkTimer,
				  jiffies + msecs_to_jiffies(0));
		}
		break;
	case LED_CTL_STOP_WPS_FAIL:
		if (pLed->bLedWPSBlinkInProgress) {
			del_timer_sync(&(pLed->BlinkTimer));
			pLed->bLedWPSBlinkInProgress = false;
		}
		pLed->bLedNoLinkBlinkInProgress = true;
		pLed->CurrLedState = LED_BLINK_SLOWLY;
		if (pLed->bLedOn)
			pLed->BlinkingLedState = RTW_LED_OFF;
		else
			pLed->BlinkingLedState = RTW_LED_ON;
		mod_timer(&pLed->BlinkTimer, jiffies +
			  msecs_to_jiffies(LED_BLINK_NO_LINK_INTERVAL_ALPHA));
		break;
	case LED_CTL_POWER_OFF:
		pLed->CurrLedState = RTW_LED_OFF;
		pLed->BlinkingLedState = RTW_LED_OFF;
		if (pLed->bLedNoLinkBlinkInProgress) {
			del_timer_sync(&(pLed->BlinkTimer));
			pLed->bLedNoLinkBlinkInProgress = false;
		}
		if (pLed->bLedLinkBlinkInProgress) {
			del_timer_sync(&(pLed->BlinkTimer));
			pLed->bLedLinkBlinkInProgress = false;
		}
		if (pLed->bLedBlinkInProgress) {
			del_timer_sync(&(pLed->BlinkTimer));
			pLed->bLedBlinkInProgress = false;
		}
		if (pLed->bLedWPSBlinkInProgress) {
			del_timer_sync(&(pLed->BlinkTimer));
			pLed->bLedWPSBlinkInProgress = false;
		}
		if (pLed->bLedScanBlinkInProgress) {
			del_timer_sync(&(pLed->BlinkTimer));
			pLed->bLedScanBlinkInProgress = false;
		}
		SwLedOff(padapter, pLed);
		break;
	default:
		break;
	}

	RT_TRACE(_module_rtl8712_led_c_, _drv_info_, ("Led %d\n", pLed->CurrLedState));
}

/*  */
/*	Description: */
/*		Handler function of LED Blinking. */
/*  */
void BlinkHandler(struct LED_871x *pLed)
{
	struct adapter *padapter = pLed->padapter;

	if ((padapter->bSurpriseRemoved) || (padapter->bDriverStopped))
		return;

	SwLedBlink1(pLed);
}

void LedControl8188eu(struct adapter *padapter, enum LED_CTL_MODE LedAction)
{
	struct led_priv *ledpriv = &(padapter->ledpriv);

	if ((padapter->bSurpriseRemoved) || (padapter->bDriverStopped) ||
	   (!padapter->hw_init_completed))
		return;

	if (!ledpriv->bRegUseLed)
		return;

	if ((padapter->pwrctrlpriv.rf_pwrstate != rf_on &&
	     padapter->pwrctrlpriv.rfoff_reason > RF_CHANGE_BY_PS) &&
	    (LedAction == LED_CTL_TX || LedAction == LED_CTL_RX ||
	     LedAction == LED_CTL_SITE_SURVEY ||
	     LedAction == LED_CTL_LINK ||
	     LedAction == LED_CTL_NO_LINK ||
	     LedAction == LED_CTL_POWER_ON))
		return;

	SwLedControlMode1(padapter, LedAction);
}