/*
 *************************************************************************
 * Ralink Tech Inc.
 * 5F., No.36, Taiyuan St., Jhubei City,
 * Hsinchu County 302,
 * Taiwan, R.O.C.
 *
 * (c) Copyright 2002-2007, Ralink Technology, Inc.
 *
 * This program is free software; you can redistribute it and/or modify  * 
 * it under the terms of the GNU General Public License as published by  * 
 * the Free Software Foundation; either version 2 of the License, or     * 
 * (at your option) any later version.                                   * 
 *                                                                       * 
 * 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.                          * 
 *                                                                       * 
 * You should have received a copy of the GNU General Public License     * 
 * along with this program; if not, write to the                         * 
 * Free Software Foundation, Inc.,                                       * 
 * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             * 
 *                                                                       * 
 *************************************************************************

	Module Name:
	rt_rf.c

	Abstract:
	Ralink Wireless driver RF related functions

	Revision History:
	Who         When          What
	--------    ----------    ----------------------------------------------
*/


#include "rt_config.h"


#ifdef RTMP_RF_RW_SUPPORT
/*
	========================================================================
	
	Routine Description: Write RT30xx RF register through MAC

	Arguments:

	Return Value:

	IRQL = 
	
	Note:
	
	========================================================================
*/
NDIS_STATUS RT30xxWriteRFRegister(
	IN	PRTMP_ADAPTER	pAd,
	IN	UCHAR			regID,
	IN	UCHAR			value)
{
	RF_CSR_CFG_STRUC	rfcsr = { { 0 } };
	UINT				i = 0;



	{
		ASSERT((regID <= pAd->chipCap.MaxNumOfRfId)); /* R0~R31 or R63*/

		do
		{
			RTMP_IO_READ32(pAd, RF_CSR_CFG, &rfcsr.word);

			if (!rfcsr.field.RF_CSR_KICK)
				break;
			i++;
		}
		while ((i < RETRY_LIMIT) && (!RTMP_TEST_FLAG(pAd, fRTMP_ADAPTER_NIC_NOT_EXIST)));

		if ((i == RETRY_LIMIT) || (RTMP_TEST_FLAG(pAd, fRTMP_ADAPTER_NIC_NOT_EXIST)))
		{
			DBGPRINT_RAW(RT_DEBUG_ERROR, ("Retry count exhausted or device removed!!!\n"));
			return STATUS_UNSUCCESSFUL;
		}

		rfcsr.field.RF_CSR_WR = 1;
		rfcsr.field.RF_CSR_KICK = 1;
		rfcsr.field.TESTCSR_RFACC_REGNUM = regID; /* R0~R31*/
		rfcsr.field.RF_CSR_DATA = value;
		
		RTMP_IO_WRITE32(pAd, RF_CSR_CFG, rfcsr.word);
	}

	return NDIS_STATUS_SUCCESS;
}


/*
	========================================================================
	
	Routine Description: Read RT30xx RF register through MAC

	Arguments:

	Return Value:

	IRQL = 
	
	Note:
	
	========================================================================
*/
NDIS_STATUS RT30xxReadRFRegister(
	IN	PRTMP_ADAPTER	pAd,
	IN	UCHAR			regID,
	IN	PUCHAR			pValue)
{
	RF_CSR_CFG_STRUC	rfcsr = { { 0 } };
	UINT				i=0, k=0;




	{
		ASSERT((regID <= pAd->chipCap.MaxNumOfRfId)); /* R0~R63*/

		for (i=0; i<MAX_BUSY_COUNT; i++)
		{
			RTMP_IO_READ32(pAd, RF_CSR_CFG, &rfcsr.word);

			if (rfcsr.field.RF_CSR_KICK == BUSY)									
			{																
				continue;													
			}																
			rfcsr.word = 0;
			rfcsr.field.RF_CSR_WR = 0;
			rfcsr.field.RF_CSR_KICK = 1;
			rfcsr.field.TESTCSR_RFACC_REGNUM = regID;
			RTMP_IO_WRITE32(pAd, RF_CSR_CFG, rfcsr.word);
			for (k=0; k<MAX_BUSY_COUNT; k++)
			{
				RTMP_IO_READ32(pAd, RF_CSR_CFG, &rfcsr.word);

				if (rfcsr.field.RF_CSR_KICK == IDLE)
					break;
			}
			if ((rfcsr.field.RF_CSR_KICK == IDLE) &&
				(rfcsr.field.TESTCSR_RFACC_REGNUM == regID))
			{
				*pValue = (UCHAR)(rfcsr.field.RF_CSR_DATA);
				break;
			}
		}
		if (rfcsr.field.RF_CSR_KICK == BUSY)
		{																	
			DBGPRINT_ERR(("RF read R%d=0x%X fail, i[%d], k[%d]\n", regID, rfcsr.word,i,k));
			return STATUS_UNSUCCESSFUL;
		}
	}

	return STATUS_SUCCESS;
}


VOID NICInitRFRegisters(
	IN RTMP_ADAPTER *pAd)
{
	if (pAd->chipOps.AsicRfInit)
		pAd->chipOps.AsicRfInit(pAd);
}


#endif /* RTMP_RF_RW_SUPPORT */

