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*******************************************************************************/
#include "voiceband/tdm/mvTdm.h"

/* defines */
#define INT_SAMPLE			2
#define BUFF_IS_FULL			1
#define BUFF_IS_EMPTY			0
#define FIRST_INT			1
#define TOTAL_BUFFERS			2
#define MV_TDM_NEXT_BUFFER(buf)		((buf + 1) % TOTAL_BUFFERS)
#define MV_TDM_PREV_BUFFER(buf, step) 	((TOTAL_BUFFERS + buf - step) % TOTAL_BUFFERS)
#define MV_TDM_CS			0
#define BUFF_INVALID			-1

/* static APIs */
static MV_STATUS mvTdmChInit(MV_U8 ch);
static MV_STATUS mvTdmChRemove(MV_U8 ch);
static MV_VOID mvTdmReset(MV_VOID);
static MV_VOID mvTdmDaisyChainModeSet(MV_VOID);
static MV_VOID mvTdmShowProperties(MV_VOID);
/* Tx */
static INLINE MV_STATUS mvTdmChTxLow(MV_U8 ch);
/* Rx */
static INLINE MV_STATUS mvTdmChRxLow(MV_U8 ch);

/* TDM channel info structure */
typedef struct _mv_tdm_ch_info {
	MV_U8 ch;
	MV_U8 *rxBuffVirt[TOTAL_BUFFERS], *txBuffVirt[TOTAL_BUFFERS];
	MV_ULONG rxBuffPhys[TOTAL_BUFFERS], txBuffPhys[TOTAL_BUFFERS];
	MV_U8 rxBuffFull[TOTAL_BUFFERS], txBuffFull[TOTAL_BUFFERS];
	MV_U8 rxCurrBuff, txCurrBuff;
	MV_U8 rxFirst;
} MV_TDM_CH_INFO;

/* globals */
static MV_U8 *rxAggrBuffVirt, *txAggrBuffVirt;
static MV_ULONG rxAggrBuffPhys, txAggrBuffPhys;
static MV_U8 rxInt, txInt;
static MV_16 rxFull, txEmpty;
static MV_U8 tdmEnable;
static MV_U8 spiMode;
static MV_U8 factor;
static MV_PCM_FORMAT pcmFormat;
static MV_BAND_MODE tdmBandMode;
static MV_TDM_CH_INFO *tdmChInfo[MV_TDM_TOTAL_CHANNELS] = { NULL, NULL };

static MV_U8 intLock;
static MV_U32 intRxCount;
static MV_U32 intTxCount;
static MV_U32 intRx0Count;
static MV_U32 intTx0Count;
static MV_U32 intRx1Count;
static MV_U32 intTx1Count;
static MV_U32 intRx0Miss;
static MV_U32 intTx0Miss;
static MV_U32 intRx1Miss;
static MV_U32 intTx1Miss;
static MV_U32 pcmRestartCount;

MV_STATUS mvTdmHalInit(MV_TDM_PARAMS *tdmParams, MV_TDM_HAL_DATA *halData)
{
	MV_U8 ch;
	MV_U32 pcmCtrlReg, nbDelay = 0, wbDelay = 0;
	MV_U32 chDelay[4] = { 0, 0, 0, 0 };

	MV_TRC_REC("->%s\n", __func__);
	mvTdmShowProperties();

	/* Init globals */
	rxInt = txInt = 0;
	rxFull = txEmpty = BUFF_INVALID;
	tdmEnable = 0, intLock = 0;
	spiMode = halData->spiMode;
	pcmFormat = tdmParams->pcmFormat;
	intRxCount = 0, intTxCount = 0;
	intRx0Count = 0, intTx0Count = 0;
	intRx1Count = 0, intTx1Count = 0;
	intRx0Miss = 0, intTx0Miss = 0;
	intRx1Miss = 0, intTx1Miss = 0;
	pcmRestartCount = 0;

	if (tdmParams->samplingPeriod > MV_TDM_MAX_SAMPLING_PERIOD)
		factor = 1;	/* use base sample period(10ms) */
	else
		factor = (tdmParams->samplingPeriod / MV_TDM_BASE_SAMPLING_PERIOD);

	/* Extract pcm format & band mode */
	if (pcmFormat == MV_PCM_FORMAT_4BYTES) {
		pcmFormat = MV_PCM_FORMAT_2BYTES;
		tdmBandMode = MV_WIDE_BAND;
	} else {
		tdmBandMode = MV_NARROW_BAND;
	}

	/* Allocate aggregated buffers for data transport */
	MV_TRC_REC("allocate %d bytes for aggregated buffer\n", MV_TDM_AGGR_BUFF_SIZE(pcmFormat, tdmBandMode, factor));
	rxAggrBuffVirt = (MV_U8 *) mvOsIoCachedMalloc(NULL, MV_TDM_AGGR_BUFF_SIZE(pcmFormat, tdmBandMode, factor),
						      &rxAggrBuffPhys, NULL);
	txAggrBuffVirt = (MV_U8 *) mvOsIoCachedMalloc(NULL, MV_TDM_AGGR_BUFF_SIZE(pcmFormat, tdmBandMode, factor),
						      &txAggrBuffPhys, NULL);
	if (!rxAggrBuffVirt || !txAggrBuffVirt) {
		mvOsPrintf("%s: Error malloc failed\n", __func__);
		return MV_NO_RESOURCE;
	}

	/* Clear buffers */
	memset(rxAggrBuffVirt, 0, MV_TDM_AGGR_BUFF_SIZE(pcmFormat, tdmBandMode, factor));
	memset(txAggrBuffVirt, 0, MV_TDM_AGGR_BUFF_SIZE(pcmFormat, tdmBandMode, factor));

	/* Calculate CH(0/1) Delay Control for narrow/wideband modes */
	for (ch = 0; ch < MV_TDM_TOTAL_CHANNELS; ch++) {
		nbDelay = ((tdmParams->pcmSlot[ch] * PCM_SLOT_PCLK) + 1);
		wbDelay = (nbDelay + ((halData->frameTs / 2) * PCM_SLOT_PCLK)); /* Offset required by ZARLINK VE880 SLIC */
		chDelay[ch] = ((nbDelay << CH_RX_DELAY_OFFS) | (nbDelay << CH_TX_DELAY_OFFS));
		chDelay[(ch + 2)] = ((wbDelay << CH_RX_DELAY_OFFS) | (wbDelay << CH_TX_DELAY_OFFS));
	}

	/* Config TDM */
	MV_REG_BIT_RESET(TDM_SPI_MUX_REG, BIT0);	/* enable TDM/SPI interface */
	MV_REG_BIT_SET(TDM_MISC_REG, BIT0);		/* sw reset to TDM for 5181L-A1 & up */
	MV_REG_WRITE(INT_RESET_SELECT_REG, CLEAR_ON_ZERO);	/* int cause is not clear on read */
	MV_REG_WRITE(INT_EVENT_MASK_REG, 0x3ffff);	/* all interrupt bits latched in status */
	MV_REG_WRITE(INT_STATUS_MASK_REG, 0);	/* disable interrupts */
	MV_REG_WRITE(INT_STATUS_REG, 0);	/* clear int status register */

	/* Bypass clock divider */
	MV_REG_WRITE(PCM_CLK_RATE_DIV_REG, PCM_DIV_PASS);	/* PCM PCLK freq */

	MV_REG_WRITE(DUMMY_RX_WRITE_DATA_REG, 0);	/* Padding on Rx completion */
	MV_REG_BYTE_WRITE(SPI_GLOBAL_CTRL_REG, MV_REG_READ(SPI_GLOBAL_CTRL_REG) | SPI_GLOBAL_ENABLE);
	MV_REG_BYTE_WRITE(SPI_CLK_PRESCALAR_REG, SPI_CLK_2MHZ);	/* SPI SCLK freq */
	MV_REG_WRITE(FRAME_TIMESLOT_REG, (MV_U32)halData->frameTs); /* Number of timeslots (PCLK) */

	if (tdmBandMode == MV_NARROW_BAND) {
		pcmCtrlReg = (CONFIG_PCM_CRTL | (((MV_U8)pcmFormat - 1) << PCM_SAMPLE_SIZE_OFFS));
		MV_REG_WRITE(PCM_CTRL_REG, pcmCtrlReg);	/* PCM configuration */
		MV_REG_WRITE(CH_DELAY_CTRL_REG(0), chDelay[0]);	/* CH0 delay control register */
		MV_REG_WRITE(CH_DELAY_CTRL_REG(1), chDelay[1]);	/* CH1 delay control register */
	} else {		/* MV_WIDE_BAND */

		pcmCtrlReg = (CONFIG_WB_PCM_CRTL | (((MV_U8)pcmFormat - 1) << PCM_SAMPLE_SIZE_OFFS));
		MV_REG_WRITE(PCM_CTRL_REG, pcmCtrlReg);	/* PCM configuration - WB support */
		MV_REG_WRITE(CH_DELAY_CTRL_REG(0), chDelay[0]);	/* CH0 delay control register */
		MV_REG_WRITE(CH_DELAY_CTRL_REG(1), chDelay[1]);	/* CH1 delay control register */
		MV_REG_WRITE(CH_WB_DELAY_CTRL_REG(0), chDelay[2]);	/* CH0 WB delay control register */
		MV_REG_WRITE(CH_WB_DELAY_CTRL_REG(1), chDelay[3]);	/* CH1 WB delay control register */
	}

	/* Issue reset to codec(s) */
	MV_TRC_REC("reseting voice unit(s)\n");
	MV_REG_WRITE(MISC_CTRL_REG, 0);
	mvOsDelay(1);
	MV_REG_WRITE(MISC_CTRL_REG, 1);

	if (spiMode) {
		/* Configure TDM to work in daisy chain mode */
		mvTdmDaisyChainModeSet();
	}

	/* Initialize all HW units */
	for (ch = 0; ch < MV_TDM_TOTAL_CHANNELS; ch++) {
		if (mvTdmChInit(ch) != MV_OK) {
			mvOsPrintf("mvTdmChInit(%d) failed !\n", ch);
			return MV_ERROR;
		}
	}

	/* Enable SLIC/DAA interrupt detection(before pcm is active) */
	MV_REG_WRITE(INT_STATUS_MASK_REG, (MV_REG_READ(INT_STATUS_MASK_REG) | TDM_INT_SLIC));

	MV_TRC_REC("<-%s\n", __func__);
	return MV_OK;
}

static MV_STATUS mvTdmChInit(MV_U8 ch)
{
	MV_TDM_CH_INFO *chInfo;
	MV_U32 buff;

	MV_TRC_REC("->%s ch%d\n", __func__, ch);

	if (ch >= MV_TDM_TOTAL_CHANNELS) {
		mvOsPrintf("%s: error, channel(%d) exceeds maximum(%d)\n", __func__, ch, MV_TDM_TOTAL_CHANNELS);
		return MV_BAD_PARAM;
	}

	tdmChInfo[ch] = chInfo = (MV_TDM_CH_INFO *) mvOsMalloc(sizeof(MV_TDM_CH_INFO));
	if (!chInfo) {
		mvOsPrintf("%s: error malloc failed\n", __func__);
		return MV_NO_RESOURCE;
	}

	chInfo->ch = ch;

	/* Per channel TDM init */
	MV_REG_WRITE(CH_ENABLE_REG(ch), CH_DISABLE);	/* disable channel (enable in pcm start) */
	MV_REG_WRITE(CH_SAMPLE_REG(ch), CONFIG_CH_SAMPLE(tdmBandMode, factor));	/* set total samples and int sample */

	for (buff = 0; buff < TOTAL_BUFFERS; buff++) {
		/* Buffers must be 32B aligned */
		chInfo->rxBuffVirt[buff] =
		    (MV_U8 *) mvOsIoUncachedMalloc(NULL, MV_TDM_CH_BUFF_SIZE(pcmFormat, tdmBandMode, factor),
						   &(chInfo->rxBuffPhys[buff]), NULL);
		chInfo->rxBuffFull[buff] = BUFF_IS_EMPTY;

		chInfo->txBuffVirt[buff] =
		    (MV_U8 *) mvOsIoUncachedMalloc(NULL, MV_TDM_CH_BUFF_SIZE(pcmFormat, tdmBandMode, factor),
						   &(chInfo->txBuffPhys[buff]), NULL);
		chInfo->txBuffFull[buff] = BUFF_IS_FULL;

		memset(chInfo->txBuffVirt[buff], 0, MV_TDM_CH_BUFF_SIZE(pcmFormat, tdmBandMode, factor));

		if (((MV_ULONG) chInfo->rxBuffVirt[buff] | chInfo->rxBuffPhys[buff] |
		     (MV_ULONG) chInfo->txBuffVirt[buff] | chInfo->txBuffPhys[buff]) & 0x1f) {
			mvOsPrintf("%s: error, unaligned buffer allocation\n", __func__);
		}
	}

	MV_TRC_REC("<-%s\n", __func__);
	return MV_OK;
}

MV_VOID mvTdmRelease(MV_VOID)
{
	MV_U8 ch;

	MV_TRC_REC("->%s\n", __func__);

	/* Free Rx/Tx aggregated buffers */
	mvOsIoCachedFree(NULL, MV_TDM_AGGR_BUFF_SIZE(pcmFormat, tdmBandMode, factor), rxAggrBuffPhys,
			 rxAggrBuffVirt, 0);
	mvOsIoCachedFree(NULL, MV_TDM_AGGR_BUFF_SIZE(pcmFormat, tdmBandMode, factor), txAggrBuffPhys,
			 txAggrBuffVirt, 0);

	/* Release HW channel resources */
	for (ch = 0; ch < MV_TDM_TOTAL_CHANNELS; ch++)
		mvTdmChRemove(ch);

	MV_TRC_REC("<-%s\n", __func__);
}

static MV_STATUS mvTdmChRemove(MV_U8 ch)
{
	MV_TDM_CH_INFO *chInfo;
	MV_U8 buff;

	MV_TRC_REC("->%s ch%d\n", __func__, ch);

	if (ch >= MV_TDM_TOTAL_CHANNELS) {
		mvOsPrintf("%s: error, channel(%d) exceeds maximum(%d)\n", __func__, ch, MV_TDM_TOTAL_CHANNELS);
		return MV_BAD_PARAM;
	}

	chInfo = tdmChInfo[ch];

	for (buff = 0; buff < TOTAL_BUFFERS; buff++) {
		mvOsIoUncachedFree(NULL, MV_TDM_CH_BUFF_SIZE(pcmFormat, tdmBandMode, factor), chInfo->rxBuffPhys[buff],
				   chInfo->rxBuffVirt[buff], 0);
		mvOsIoUncachedFree(NULL, MV_TDM_CH_BUFF_SIZE(pcmFormat, tdmBandMode, factor), chInfo->txBuffPhys[buff],
				   chInfo->txBuffVirt[buff], 0);
	}

	mvOsFree(chInfo);

	MV_TRC_REC("<-%s ch%d\n", __func__, ch);
	return MV_OK;
}

static MV_VOID mvTdmReset(MV_VOID)
{
	MV_TDM_CH_INFO *chInfo;
	MV_U8 buff, ch;

	MV_TRC_REC("->%s\n", __func__);

	/* Reset globals */
	rxInt = txInt = 0;
	rxFull = txEmpty = BUFF_INVALID;

	for (ch = 0; ch < MV_TDM_TOTAL_CHANNELS; ch++) {
		chInfo = tdmChInfo[ch];
		chInfo->rxFirst = FIRST_INT;
		chInfo->txCurrBuff = chInfo->rxCurrBuff = 0;
		for (buff = 0; buff < TOTAL_BUFFERS; buff++) {
			chInfo->rxBuffFull[buff] = BUFF_IS_EMPTY;
			chInfo->txBuffFull[buff] = BUFF_IS_FULL;

		}
	}

	MV_TRC_REC("<-%s\n", __func__);
	return;
}

MV_VOID mvTdmPcmStart(MV_VOID)
{
	MV_TDM_CH_INFO *chInfo;
	MV_U8 ch;

	MV_TRC_REC("->%s\n", __func__);

	tdmEnable = 1;		/* TDM is enabled  */
	intLock = 0;
	mvTdmReset();

	for (ch = 0; ch < MV_TDM_TOTAL_CHANNELS; ch++) {
		chInfo = tdmChInfo[ch];

		/* Set Tx buff */
		MV_REG_WRITE(CH_TX_ADDR_REG(ch), chInfo->txBuffPhys[chInfo->txCurrBuff]);
		MV_REG_BYTE_WRITE(CH_BUFF_OWN_REG(ch) + TX_OWN_BYTE_OFFS, OWN_BY_HW);

		/* Set Rx buff */
		MV_REG_WRITE(CH_RX_ADDR_REG(ch), chInfo->rxBuffPhys[chInfo->rxCurrBuff]);
		MV_REG_BYTE_WRITE(CH_BUFF_OWN_REG(ch) + RX_OWN_BYTE_OFFS, OWN_BY_HW);

	}

	/* Enable Tx */
	MV_REG_BYTE_WRITE(CH_ENABLE_REG(0) + TX_ENABLE_BYTE_OFFS, CH_ENABLE);
	MV_REG_BYTE_WRITE(CH_ENABLE_REG(1) + TX_ENABLE_BYTE_OFFS, CH_ENABLE);

	/* Enable Rx */
	MV_REG_BYTE_WRITE(CH_ENABLE_REG(0) + RX_ENABLE_BYTE_OFFS, CH_ENABLE);
	MV_REG_BYTE_WRITE(CH_ENABLE_REG(1) + RX_ENABLE_BYTE_OFFS, CH_ENABLE);

	/* Enable Tx interrupts */
	MV_REG_WRITE(INT_STATUS_REG, MV_REG_READ(INT_STATUS_REG) & (~(TDM_INT_TX(0) | TDM_INT_TX(1))));
	MV_REG_WRITE(INT_STATUS_MASK_REG, (MV_REG_READ(INT_STATUS_MASK_REG) | TDM_INT_TX(0) | TDM_INT_TX(1)));

	/* Enable Rx interrupts */
	MV_REG_WRITE(INT_STATUS_REG, (MV_REG_READ(INT_STATUS_REG) & (~(TDM_INT_RX(0) | TDM_INT_RX(1)))));
	MV_REG_WRITE(INT_STATUS_MASK_REG, (MV_REG_READ(INT_STATUS_MASK_REG) | TDM_INT_RX(0) | TDM_INT_RX(1)));

	MV_TRC_REC("<-%s\n", __func__);
}

MV_VOID mvTdmPcmStop(MV_VOID)
{
	MV_TRC_REC("->%s\n", __func__);

	tdmEnable = 0;
	mvTdmReset();

	/* Mask all interrpts except SLIC/DAA */
	/*MV_REG_WRITE(INT_STATUS_MASK_REG, (MV_U32)TDM_INT_SLIC);*/

	MV_TRC_REC("<-%s\n", __func__);
}

MV_STATUS mvTdmTx(MV_U8 *tdmTxBuff)
{
	MV_TDM_CH_INFO *chInfo;
	MV_U8 ch;
	MV_U8 *pTdmTxBuff;

	MV_TRC_REC("->%s\n", __func__);

	/* Sanity check */
	if (tdmTxBuff != txAggrBuffVirt) {
		mvOsPrintf("%s: Error, invalid Tx buffer !!!\n", __func__);
		return MV_ERROR;
	}

	if (!tdmEnable) {
		mvOsPrintf("%s: Error, no active Tx channels are available\n", __func__);
		return MV_ERROR;
	}

	if (txEmpty == BUFF_INVALID) {
		MV_TRC_REC("%s: Tx not ready\n", __func__);
		return MV_NOT_READY;
	}

	for (ch = 0; ch < MV_TDM_TOTAL_CHANNELS; ch++) {
		chInfo = tdmChInfo[ch];
		MV_TRC_REC("ch%d: fill buf %d with %d bytes\n", ch, txEmpty,
			   MV_TDM_CH_BUFF_SIZE(pcmFormat, tdmBandMode, factor));
		chInfo->txBuffFull[txEmpty] = BUFF_IS_FULL;
		pTdmTxBuff = tdmTxBuff + (ch * MV_TDM_CH_BUFF_SIZE(pcmFormat, tdmBandMode, factor));
		/* Copy data from voice engine buffer to DMA */
		mvOsMemcpy(chInfo->txBuffVirt[txEmpty], pTdmTxBuff,
			   MV_TDM_CH_BUFF_SIZE(pcmFormat, tdmBandMode, factor));
	}

	txEmpty = BUFF_INVALID;

	MV_TRC_REC("<-%s\n", __func__);
	return MV_OK;
}

MV_STATUS mvTdmRx(MV_U8 *tdmRxBuff)
{
	MV_TDM_CH_INFO *chInfo;
	MV_U8 ch;
	MV_U8 *pTdmRxBuff;

	MV_TRC_REC("->%s\n", __func__);

	/* Sanity check */
	if (tdmRxBuff != rxAggrBuffVirt) {
		mvOsPrintf("%s: invalid Rx buffer !!!\n", __func__);
		return MV_ERROR;
	}

	if (!tdmEnable) {
		mvOsPrintf("%s: Error, no active Rx channels are available\n", __func__);
		return MV_ERROR;
	}

	if (rxFull == BUFF_INVALID) {
		MV_TRC_REC("%s: Rx not ready\n", __func__);
		return MV_NOT_READY;
	}

	for (ch = 0; ch < MV_TDM_TOTAL_CHANNELS; ch++) {
		chInfo = tdmChInfo[ch];
		chInfo->rxBuffFull[rxFull] = BUFF_IS_EMPTY;
		MV_TRC_REC("%s get Rx buffer(%d) for channel(%d)\n", __func__, rxFull, ch);
		pTdmRxBuff = tdmRxBuff + (ch * MV_TDM_CH_BUFF_SIZE(pcmFormat, tdmBandMode, factor));
		/* Copy data from DMA to voice engine buffer */
		mvOsMemcpy(pTdmRxBuff, chInfo->rxBuffVirt[rxFull], MV_TDM_CH_BUFF_SIZE(pcmFormat, tdmBandMode, factor));
	}

	rxFull = BUFF_INVALID;
	MV_TRC_REC("<-%s\n", __func__);
	return MV_OK;
}

/* Low level TDM interrupt service routine */
MV_32 mvTdmIntLow(MV_TDM_INT_INFO *tdmIntInfo)
{
	MV_U32 statusReg, maskReg, statusAndMask;
	MV_32 ret = 0;
	MV_32 intTxMiss = -1;
	MV_32 intRxMiss = -1;
	MV_U8 ch;

	MV_TRC_REC("->%s\n", __func__);

	/* Read Status & mask registers */
	statusReg = MV_REG_READ(INT_STATUS_REG);
	maskReg = MV_REG_READ(INT_STATUS_MASK_REG);
	MV_TRC_REC("CAUSE(0x%x), MASK(0x%x)\n", statusReg, maskReg);

	/* Refer only to unmasked bits */
	statusAndMask = statusReg & maskReg;

	/* Reset params */
	tdmIntInfo->tdmRxBuff = NULL;
	tdmIntInfo->tdmTxBuff = NULL;
	tdmIntInfo->intType = MV_EMPTY_INT;
	tdmIntInfo->cs = MV_TDM_CS;

	/* Handle SLIC/DAA int */
	if (statusAndMask & SLIC_INT_BIT) {
		MV_TRC_REC("Phone interrupt !!!\n");
		tdmIntInfo->intType |= MV_PHONE_INT;
	}
#if 0
	/* Return in case TDM is disabled */
	if (!tdmEnable) {
		MV_TRC_REC("TDM is disabled - quit low level ISR\n");
		MV_REG_WRITE(INT_STATUS_REG, ~statusReg);
		return;
	}
#endif
	if (statusAndMask & DMA_ABORT_BIT) {
		mvOsPrintf("DMA data abort. Address: 0x%08x, Info: 0x%08x\n",
			   MV_REG_READ(DMA_ABORT_ADDR_REG), MV_REG_READ(DMA_ABORT_INFO_REG));
		tdmIntInfo->intType |= MV_DMA_ERROR_INT;
	}

	for (ch = 0; ch < MV_TDM_TOTAL_CHANNELS; ch++) {

		/* Give next buff to TDM and set curr buff as empty */
		if ((statusAndMask & TX_BIT(ch)) && tdmEnable && !intLock) {
			MV_TRC_REC("Tx interrupt(ch%d) !!!\n", ch);

			intTxCount++;
			if (ch == 0) {
				intTx0Count++;
				if (intTx0Count <= intTx1Count) {
					intTxMiss = 0;
					intTx0Miss++;
				}
			} else {
				intTx1Count++;
				if (intTx1Count < intTx0Count) {
					intTxMiss = 1;
					intTx1Miss++;
				}
			}

			/* MV_OK -> Tx is done for both channels */
			if (mvTdmChTxLow(ch) == MV_OK) {
				MV_TRC_REC("Assign Tx aggregate buffer for further processing\n");
				tdmIntInfo->tdmTxBuff = txAggrBuffVirt;
				tdmIntInfo->intType |= MV_TX_INT;
			}
		}
	}

	for (ch = 0; ch < MV_TDM_TOTAL_CHANNELS; ch++) {

		if ((statusAndMask & RX_BIT(ch)) && tdmEnable && !intLock) {
			MV_TRC_REC("Rx interrupt(ch%d) !!!\n", ch);

			intRxCount++;
			if (ch == 0) {
				intRx0Count++;
				if (intRx0Count <= intRx1Count) {
					intRxMiss = 0;
					intRx0Miss++;
				}
			} else {
				intRx1Count++;
				if (intRx1Count < intRx0Count) {
					intRxMiss = 1;
					intRx1Miss++;
				}
			}

			/* MV_OK -> Rx is done for both channels */
			if (mvTdmChRxLow(ch) == MV_OK) {
				MV_TRC_REC("Assign Rx aggregate buffer for further processing\n");
				tdmIntInfo->tdmRxBuff = rxAggrBuffVirt;
				tdmIntInfo->intType |= MV_RX_INT;
			}
		}
	}

	for (ch = 0; ch < MV_TDM_TOTAL_CHANNELS; ch++) {

		if (statusAndMask & TX_UNDERFLOW_BIT(ch)) {

			MV_TRC_REC("Tx underflow(ch%d) - checking for root cause...\n", ch);
			if (tdmEnable) {
				MV_TRC_REC("Tx underflow ERROR\n");
				tdmIntInfo->intType |= MV_TX_ERROR_INT;
				if (!(statusAndMask & TX_BIT(ch))) {
					ret = -1;
					/* MV_OK -> Tx is done for both channels */
					if (mvTdmChTxLow(ch) == MV_OK) {
						MV_TRC_REC("Assign Tx aggregate buffer for further processing\n");
						tdmIntInfo->tdmTxBuff = txAggrBuffVirt;
						tdmIntInfo->intType |= MV_TX_INT;
					}
				}
			} else {
				MV_TRC_REC("Expected Tx underflow(not an error)\n");
					MV_REG_WRITE(INT_STATUS_MASK_REG,
						     MV_REG_READ(INT_STATUS_MASK_REG) & (~(TDM_INT_TX(ch))));
			}
		}


		if (statusAndMask & RX_OVERFLOW_BIT(ch)) {
			MV_TRC_REC("Rx overflow(ch%d) - checking for root cause...\n", ch);
			if (tdmEnable) {
				MV_TRC_REC("Rx overflow ERROR\n");
				tdmIntInfo->intType |= MV_RX_ERROR_INT;
				if (!(statusAndMask & RX_BIT(ch))) {
					ret = -1;
					/* MV_OK -> Rx is done for both channels */
					if (mvTdmChRxLow(ch) == MV_OK) {
						MV_TRC_REC("Assign Rx aggregate buffer for further processing\n");
						tdmIntInfo->tdmRxBuff = rxAggrBuffVirt;
						tdmIntInfo->intType |= MV_RX_INT;
					}
				}
			} else {
				MV_TRC_REC("Expected Rx overflow(not an error)\n");
				MV_REG_WRITE(INT_STATUS_MASK_REG,
					     MV_REG_READ(INT_STATUS_MASK_REG) & (~(TDM_INT_RX(ch))));
			}
		}
	}

	/* clear TDM interrupts */
	MV_REG_WRITE(INT_STATUS_REG, ~statusReg);

	/* Check if interrupt was missed -> restart */
	if  (intTxMiss != -1)  {
		MV_TRC_REC("Missing Tx Interrupt Detected ch%d!!!\n", intTxMiss);
		if (intTxMiss)
			intTx1Count = intTx0Count;
		else
			intTx0Count  = (intTx1Count + 1);
		ret = -1;
	}

	if  (intRxMiss != -1)  {
		MV_TRC_REC("Missing Rx Interrupt Detected ch%d!!!\n", intRxMiss);
		if (intRxMiss)
			intRx1Count = intRx0Count;
		else
			intRx0Count  = (intRx1Count + 1);
		ret = -1;
	}

	if (ret == -1) {
		intLock = 1;
		pcmRestartCount++;
	}

	MV_TRC_REC("<-%s\n", __func__);
	return ret;
}

static INLINE MV_STATUS mvTdmChTxLow(MV_U8 ch)
{
	MV_U32 max_poll = 0;
	MV_TDM_CH_INFO *chInfo = tdmChInfo[ch];

	MV_TRC_REC("->%s ch%d\n", __func__, ch);

	/* count tx interrupts */
	txInt++;
	MV_TRC_REC("txInt(%d)\n", txInt);

	if (chInfo->txBuffFull[chInfo->txCurrBuff] == BUFF_IS_FULL)
		MV_TRC_REC("curr buff full for hw [MMP ok]\n");
	else
		MV_TRC_REC("curr buf is empty [MMP miss write]\n");

	/* Change buffers */
	chInfo->txCurrBuff = MV_TDM_NEXT_BUFFER(chInfo->txCurrBuff);

	/* Mark next buff to be transmitted by HW as empty. Give it to the HW
	   for next frame. The app need to write the data before HW takes it.  */
	chInfo->txBuffFull[chInfo->txCurrBuff] = BUFF_IS_EMPTY;
	MV_TRC_REC("->%s clear buf(%d) for channel(%d)\n", __func__, chInfo->txCurrBuff, ch);

	/* Poll on SW ownership (single check) */
	MV_TRC_REC("start poll for SW ownership\n");
	while (((MV_REG_BYTE_READ(CH_BUFF_OWN_REG(chInfo->ch) + TX_OWN_BYTE_OFFS) & OWNER_MASK) == OWN_BY_HW)
	       && (max_poll < 2000)) {
		mvOsUDelay(1);
		max_poll++;
	}
	if (max_poll == 2000) {
		MV_TRC_REC("poll timeout (~2ms)\n");
		return MV_TIMEOUT;
	} else {
		MV_TRC_REC("tx-low poll stop ok\n");
	}
	MV_TRC_REC("ch%d, start tx buff %d\n", ch, chInfo->txCurrBuff);

	/*Set TX buff address (must be 32 byte aligned) */
	MV_REG_WRITE(CH_TX_ADDR_REG(chInfo->ch), chInfo->txBuffPhys[chInfo->txCurrBuff]);

	/* Set HW ownership */
	MV_REG_BYTE_WRITE(CH_BUFF_OWN_REG(chInfo->ch) + TX_OWN_BYTE_OFFS, OWN_BY_HW);

	/* Enable Tx */
	MV_REG_BYTE_WRITE(CH_ENABLE_REG(chInfo->ch) + TX_ENABLE_BYTE_OFFS, CH_ENABLE);

	MV_TRC_REC("<-%s\n", __func__);

	/* Did we get the required amount of irqs for Tx wakeup ? */
	if (txInt < MV_TDM_INT_COUNTER) {
		return MV_NOT_READY;
	} else {
		txInt = 0;
		txEmpty = chInfo->txCurrBuff;
		return MV_OK;
	}
}

static INLINE MV_STATUS mvTdmChRxLow(MV_U8 ch)
{
	MV_U32 max_poll = 0;
	MV_TDM_CH_INFO *chInfo = tdmChInfo[ch];

	MV_TRC_REC("->%s ch%d\n", __func__, ch);

	if (chInfo->rxFirst)
		chInfo->rxFirst = !FIRST_INT;
	else
		rxInt++;

	MV_TRC_REC("rxInt(%d)\n", rxInt);

	if (chInfo->rxBuffFull[chInfo->rxCurrBuff] == BUFF_IS_EMPTY)
		MV_TRC_REC("curr buff empty for hw [MMP ok]\n");
	else
		MV_TRC_REC("curr buf is full [MMP miss read]\n");

	/* Mark last buff that was received by HW as full. Give next buff to HW for */
	/* next frame. The app need to read the data before next irq */
	chInfo->rxBuffFull[chInfo->rxCurrBuff] = BUFF_IS_FULL;

	/* Change buffers */
	chInfo->rxCurrBuff = MV_TDM_NEXT_BUFFER(chInfo->rxCurrBuff);

	/* Poll on SW ownership (single check) */
	MV_TRC_REC("start poll for ownership\n");
	while (((MV_REG_BYTE_READ(CH_BUFF_OWN_REG(chInfo->ch) + RX_OWN_BYTE_OFFS) & OWNER_MASK) == OWN_BY_HW)
	       && (max_poll < 2000)) {
		mvOsUDelay(1);
		max_poll++;
	}
	if (max_poll == 2000) {
		MV_TRC_REC("poll timeout (~2ms)\n");
		return MV_TIMEOUT;
	} else {
		MV_TRC_REC("poll stop ok\n");
	}
	MV_TRC_REC("%s ch%d, start rx buff %d\n", __func__, ch, chInfo->rxCurrBuff);

	/* Set RX buff address (must be 32 byte aligned) */
	MV_REG_WRITE(CH_RX_ADDR_REG(chInfo->ch), chInfo->rxBuffPhys[chInfo->rxCurrBuff]);

	/* Set HW ownership */
	MV_REG_BYTE_WRITE(CH_BUFF_OWN_REG(chInfo->ch) + RX_OWN_BYTE_OFFS, OWN_BY_HW);

	/* Enable Rx */
	MV_REG_BYTE_WRITE(CH_ENABLE_REG(chInfo->ch) + RX_ENABLE_BYTE_OFFS, CH_ENABLE);

	MV_TRC_REC("<-%s\n", __func__);

	/* Did we get the required amount of irqs for Rx wakeup ? */
	if (rxInt < MV_TDM_INT_COUNTER) {
		return MV_NOT_READY;
	} else {
		rxInt = 0;
		rxFull = MV_TDM_PREV_BUFFER(chInfo->rxCurrBuff, 2);
		MV_TRC_REC("buff %d is FULL for ch0\n", rxFull);
		MV_TRC_REC("buff %d is FULL for ch1\n", rxFull);
		return MV_OK;
	}
}

/****************************
**        SPI Stuff        **
****************************/

static MV_VOID mvTdmSetCurrentUnit(MV_32 cs)
{
	if (!spiMode) {
		if (!cs)
			MV_REG_WRITE(PCM_CTRL_REG, (MV_REG_READ(PCM_CTRL_REG) & ~CS_CTRL));
		else
			MV_REG_WRITE(PCM_CTRL_REG, (MV_REG_READ(PCM_CTRL_REG) | CS_CTRL));
	} else
		MV_REG_WRITE(PCM_CTRL_REG, (MV_REG_READ(PCM_CTRL_REG) & ~CS_CTRL));
}

static MV_VOID mvTdmDaisyChainModeSet(MV_VOID)
{
	mvOsPrintf("Setting Daisy Chain Mode\n");
	while ((MV_REG_READ(SPI_CTRL_REG) & SPI_STAT_MASK) == SPI_ACTIVE)
		continue;
	MV_REG_WRITE(SPI_CODEC_CMD_LO_REG, (0x80 << 8) | 0);
	MV_REG_WRITE(SPI_CODEC_CTRL_REG, TRANSFER_BYTES(2) | ENDIANESS_MSB_MODE | WR_MODE | CLK_SPEED_LO_DIV);
	MV_REG_WRITE(SPI_CTRL_REG, MV_REG_READ(SPI_CTRL_REG) | SPI_ACTIVE);
	/* Poll for ready indication */
	while ((MV_REG_READ(SPI_CTRL_REG) & SPI_STAT_MASK) == SPI_ACTIVE)
		continue;
}

MV_STATUS mvTdmSpiWrite(MV_U8 *cmdBuff, MV_U8 cmdSize, MV_U8 *dataBuff, MV_U8 dataSize, MV_U8 cs)
{
	MV_U32 i, val1 = 0, val2 = 0, cmd;

	/*MV_TRC_REC("%s: cs = %d val1 = 0x%x val2 = 0x%x\n",__func__,cs, val1, val2); */

	/* Poll for ready indication */
	while ((MV_REG_READ(SPI_CTRL_REG) & SPI_STAT_MASK) == SPI_ACTIVE)
		continue;

	if (cmdSize > 0)
		val1 = (MV_U32) (cmdBuff[0] & 0xff);

	if (cmdSize > 1)
		val1 |= (MV_U32) (cmdBuff[1] << 8);

	if (cmdSize > 2)
		val2 = (MV_U32) (cmdBuff[2] & 0xff);

	mvTdmSetCurrentUnit(cs);

	/* Prepare codec control parameters for command transmission */
	cmd = TRANSFER_BYTES(cmdSize) | ENDIANESS_MSB_MODE | WR_MODE | CLK_SPEED_LO_DIV;

	MV_REG_WRITE(SPI_CODEC_CMD_LO_REG, val1);
	MV_REG_WRITE(SPI_CODEC_CMD_HI_REG, val2);
	MV_REG_WRITE(SPI_CODEC_CTRL_REG, cmd);

	/* Activate */
	MV_REG_WRITE(SPI_CTRL_REG, MV_REG_READ(SPI_CTRL_REG) | SPI_ACTIVE);

	/* Poll for ready indication */
	while ((MV_REG_READ(SPI_CTRL_REG) & SPI_STAT_MASK) == SPI_ACTIVE)
		continue;

	/* Update the command to 1 data byte transfer */
	cmd = TRANSFER_BYTES(1) | ENDIANESS_MSB_MODE | WR_MODE | CLK_SPEED_LO_DIV;

	for (i = 0; i < dataSize; i++) {
		val1 = dataBuff[i];

		mvTdmSetCurrentUnit(cs);

		MV_REG_WRITE(SPI_CODEC_CMD_LO_REG, val1);
		MV_REG_WRITE(SPI_CODEC_CTRL_REG, cmd);

		/* Activate */
		MV_REG_WRITE(SPI_CTRL_REG, MV_REG_READ(SPI_CTRL_REG) | SPI_ACTIVE);

		/* Poll for ready indication */
		while ((MV_REG_READ(SPI_CTRL_REG) & SPI_STAT_MASK) == SPI_ACTIVE)
			continue;
	}

	return MV_OK;
}

MV_STATUS mvTdmSpiRead(MV_U8 *cmdBuff, MV_U8 cmdSize, MV_U8 *dataBuff, MV_U8 dataSize, MV_U8 cs)
{
	MV_U32 val1 = 0, val2 = 0, cmd;
	MV_U32 data;

	/*MV_TRC_REC("%s: cs = %d val1 = 0x%x val2 = 0x%x\n",__func__,cs, val1, val2); */

	if (dataSize > 2) {
		mvOsPrintf("%s: Error, exceeded max read size(%d)\n", __func__, dataSize);
		return MV_ERROR;
	}

	/* Poll for ready indication */
	while ((MV_REG_READ(SPI_CTRL_REG) & SPI_STAT_MASK) == SPI_ACTIVE)
		continue;

	val1 = (MV_U32) (cmdBuff[0] & 0xff);

	if (cmdSize > 1)
		val1 |= (MV_U32) (cmdBuff[1] << 8);

	if (cmdSize > 2)
		val2 = (MV_U32) (cmdBuff[2] & 0xff);

	if (cmdSize > 3)
		val2 = (MV_U32) (cmdBuff[3] << 8);

	mvTdmSetCurrentUnit(cs);

	/* Prepare codec control parameters for command transmission */
	if (dataSize == 1)
		cmd = TRANSFER_BYTES(cmdSize) | ENDIANESS_MSB_MODE | RD_MODE | READ_1_BYTE | CLK_SPEED_LO_DIV;
	else
		cmd = TRANSFER_BYTES(cmdSize) | ENDIANESS_MSB_MODE | RD_MODE | READ_2_BYTE | CLK_SPEED_LO_DIV;

	MV_REG_WRITE(SPI_CODEC_CMD_LO_REG, val1);
	MV_REG_WRITE(SPI_CODEC_CMD_HI_REG, val2);
	MV_REG_WRITE(SPI_CODEC_CTRL_REG, cmd);

	/* Activate */
	MV_REG_WRITE(SPI_CTRL_REG, MV_REG_READ(SPI_CTRL_REG) | SPI_ACTIVE);

	/* Poll for ready indication */
	while ((MV_REG_READ(SPI_CTRL_REG) & SPI_STAT_MASK) == SPI_ACTIVE)
		continue;

	/* Read the data received from codec */
	data = MV_REG_READ(SPI_CODEC_READ_DATA_REG);
	dataBuff[dataSize - 1] = (data & 0xff);

	if (dataSize == 2)
		dataBuff[0] = ((data & 0xff00) >> 8);

	return MV_OK;
}

/******************
** Debug Display **
******************/
MV_VOID mvOsRegDump(MV_U32 reg)
{
	mvOsPrintf("0x%05x: %08x\n", reg, MV_REG_READ(reg));
}

MV_VOID mvTdmRegsDump(MV_VOID)
{
	MV_U8 i;
	MV_TDM_CH_INFO *chInfo;

	mvOsPrintf("TDM Control:\n");
	mvOsRegDump(TDM_SPI_MUX_REG);
	mvOsRegDump(INT_RESET_SELECT_REG);
	mvOsRegDump(INT_STATUS_MASK_REG);
	mvOsRegDump(INT_STATUS_REG);
	mvOsRegDump(INT_EVENT_MASK_REG);
	mvOsRegDump(PCM_CTRL_REG);
	mvOsRegDump(TIMESLOT_CTRL_REG);
	mvOsRegDump(PCM_CLK_RATE_DIV_REG);
	mvOsRegDump(FRAME_TIMESLOT_REG);
	mvOsRegDump(DUMMY_RX_WRITE_DATA_REG);
	mvOsRegDump(MISC_CTRL_REG);
	mvOsPrintf("TDM Channel Control:\n");
	for (i = 0; i < MV_TDM_TOTAL_CHANNELS; i++) {
		mvOsRegDump(CH_DELAY_CTRL_REG(i));
		mvOsRegDump(CH_SAMPLE_REG(i));
		mvOsRegDump(CH_DBG_REG(i));
		mvOsRegDump(CH_TX_CUR_ADDR_REG(i));
		mvOsRegDump(CH_RX_CUR_ADDR_REG(i));
		mvOsRegDump(CH_ENABLE_REG(i));
		mvOsRegDump(CH_BUFF_OWN_REG(i));
		mvOsRegDump(CH_TX_ADDR_REG(i));
		mvOsRegDump(CH_RX_ADDR_REG(i));
	}
	mvOsPrintf("TDM interrupts:\n");
	mvOsRegDump(INT_EVENT_MASK_REG);
	mvOsRegDump(INT_STATUS_MASK_REG);
	mvOsRegDump(INT_STATUS_REG);
	for (i = 0; i < MV_TDM_TOTAL_CHANNELS; i++) {
		mvOsPrintf("ch%d info:\n", i);
		chInfo = tdmChInfo[i];
		mvOsPrintf("RX buffs:\n");
		mvOsPrintf("buff0: virt=%p phys=%p\n", chInfo->rxBuffVirt[0], (MV_U32 *) (chInfo->rxBuffPhys[0]));
		mvOsPrintf("buff1: virt=%p phys=%p\n", chInfo->rxBuffVirt[1], (MV_U32 *) (chInfo->rxBuffPhys[1]));
		mvOsPrintf("TX buffs:\n");
		mvOsPrintf("buff0: virt=%p phys=%p\n", chInfo->txBuffVirt[0], (MV_U32 *) (chInfo->txBuffPhys[0]));
		mvOsPrintf("buff1: virt=%p phys=%p\n", chInfo->txBuffVirt[1], (MV_U32 *) (chInfo->txBuffPhys[1]));
	}
}

static MV_VOID mvTdmShowProperties(MV_VOID)
{
	mvOsPrintf("TDM dual channel device rev 0x%x\n", MV_REG_READ(TDM_REV_REG));
}

MV_U8 currRxSampleGet(MV_U8 ch)
{
	return (MV_REG_BYTE_READ(CH_DBG_REG(ch) + 1));
}

MV_U8 currTxSampleGet(MV_U8 ch)
{
	return (MV_REG_BYTE_READ(CH_DBG_REG(ch) + 3));
}

MV_VOID mvTdmIntEnable(MV_VOID)
{
	MV_REG_WRITE(INT_STATUS_MASK_REG, (MV_REG_READ(INT_STATUS_MASK_REG) | TDM_INT_SLIC));
}

MV_VOID mvTdmIntDisable(MV_VOID)
{
	MV_U32 val = ~TDM_INT_SLIC;

	MV_TRC_REC("->%s\n", __func__);

	MV_REG_WRITE(INT_STATUS_MASK_REG, (MV_REG_READ(INT_STATUS_MASK_REG) & val));

	MV_TRC_REC("<-%s\n", __func__);
}

MV_VOID mvTdmPcmIfReset(MV_VOID)
{
	MV_TRC_REC("->%s\n", __func__);

	MV_REG_BIT_RESET(PCM_CTRL_REG, BIT0);

	/* Wait a bit - might be fine tuned */
	mvOsDelay(10);

	MV_REG_WRITE(TDM_MISC_REG, 0);

	/* Wait a bit more - might be fine tuned */
	mvOsDelay(100);

	MV_TRC_REC("<-%s\n", __func__);
}

#ifdef MV_TDM_EXT_STATS
MV_VOID mvTdmExtStatsGet(MV_TDM_EXTENDED_STATS* tdmExtStats)
{
	tdmExtStats->intRxCount = intRxCount;
	tdmExtStats->intTxCount = intTxCount;
	tdmExtStats->intRx0Count = intRx0Count;
	tdmExtStats->intTx0Count = intTx0Count;
	tdmExtStats->intRx1Count = intRx1Count;
	tdmExtStats->intTx1Count = intTx1Count;
	tdmExtStats->intRx0Miss = intRx0Miss;
	tdmExtStats->intTx0Miss = intTx0Miss;
	tdmExtStats->intRx1Miss = intRx1Miss;
	tdmExtStats->intTx1Miss = intTx1Miss;
	tdmExtStats->pcmRestartCount = pcmRestartCount;

	return;
}
#endif