luatos-soc-air101/platform/drivers/i2s/wm_i2s.c

#include <string.h>
#include "wm_include.h"
#include "wm_i2s.h"
#include "wm_irq.h"

#define FPGA_800_I2S     0
#define I2S_CLK          160000000
#define TEST_WITH_F401   0
#define APPEND_NUM       4

wm_i2s_buf_t  wm_i2s_buf[1] = { 0 };
static uint8_t tx_channel = 0, rx_channel = 0;
static wm_dma_desc g_dma_desc_tx[2];
static wm_dma_desc g_dma_desc_rx[2];

//master or slave
static void wm_i2s_set_mode(bool bl)
{
	tls_bitband_write(HR_I2S_CTRL, 28, bl);
}

//master or slave
#if 0
static uint32_t wm_i2s_get_mode(void)
{
	uint32_t reg;
	
	reg = tls_reg_read32(HR_I2S_CTRL);
	reg = reg>>28;
	
	return (reg & 0x1);
}
#endif

//i2s_stardard
void wm_i2s_set_format(uint32_t format)
{
	uint32_t reg;
	reg = tls_reg_read32(HR_I2S_CTRL);
	reg &= ~(0x3<<24);
	reg |= format;
	tls_reg_write32(HR_I2S_CTRL, reg);
}

void wm_i2s_left_channel_sel(bool bl)
{
	tls_bitband_write(HR_I2S_CTRL, 23, bl);
}

void wm_i2s_mono_select(bool bl)
{
	tls_bitband_write(HR_I2S_CTRL, 22, bl);
}

static void wm_i2s_rx_dma_enable(bool bl)
{
	tls_bitband_write(HR_I2S_CTRL, 21, bl);
}

void wm_i2s_tx_dma_enable(bool bl)
{
	tls_bitband_write(HR_I2S_CTRL, 20, bl);
}

static void wm_i2s_rx_fifo_clear()
{
	tls_bitband_write(HR_I2S_CTRL, 19, 1);
}

static void wm_i2s_tx_fifo_clear()
{
	tls_bitband_write(HR_I2S_CTRL, 18, 1);
}

#if 0
static void wm_i2s_left_zerocross_enable(bool bl)
{
	tls_bitband_write(HR_I2S_CTRL, 17, bl);
}

static void wm_i2s_right_zerocross_enable(bool bl)
{
	tls_bitband_write(HR_I2S_CTRL, 16, bl);
}
#endif

static void wm_i2s_set_rxth(uint8_t th)
{
	uint32_t reg;
	
	if(th > 7)
	{
		th = 7;
	}
	reg = tls_reg_read32(HR_I2S_CTRL);
	reg &= ~(0x7<<12);
	reg |= (th << 12);
	tls_reg_write32(HR_I2S_CTRL, reg);	
}

static void wm_i2s_set_txth(uint8_t th)
{
	uint32_t reg;
	
	if(th > 7)
	{
		th = 7;
	}	
	reg = tls_reg_read32(HR_I2S_CTRL);
	reg &= ~(0x7<<9);
	reg |= (th << 9);
	tls_reg_write32(HR_I2S_CTRL, reg);	
}

#if 0
static void wm_i2s_clk_inverse(bool bl)
{
	tls_bitband_write(HR_I2S_CTRL, 8, bl);
	tls_bitband_write(HR_I2S_CTRL, 15, bl);
}
#endif

void wm_i2s_set_word_len(uint8_t len)
{
	uint32_t reg;
    
	reg = tls_reg_read32(HR_I2S_CTRL);
	reg &= ~(0x3<<4);
	len = (len>>3) - 1;
	reg |= (len<<4);
	tls_reg_write32(HR_I2S_CTRL, reg);
}

#if 0
static void wm_i2s_set_mute(bool bl)
{
	tls_bitband_write(HR_I2S_CTRL, 3, bl);
}
#endif

void wm_i2s_rx_enable(bool bl)
{
	tls_bitband_write(HR_I2S_CTRL, 2, bl);
}

void wm_i2s_tx_enable(bool bl)
{
	tls_bitband_write(HR_I2S_CTRL, 1, bl);
}

void wm_i2s_enable(bool bl)
{
	tls_bitband_write(HR_I2S_CTRL, 0, bl);
}

#if 0
static void wm_i2s_lzc_int_mask(bool bl)
{
	tls_bitband_write(HR_I2S_INT_MASK, 9, bl);
}

static void wm_i2s_rzc_int_mask(bool bl)
{
	tls_bitband_write(HR_I2S_INT_MASK, 8, bl);
}

static void wm_i2s_txdone_int_mask(bool bl)
{
	tls_bitband_write(HR_I2S_INT_MASK, 7, bl);
}
#endif

static void wm_i2s_txth_int_mask(bool bl)
{
	tls_bitband_write(HR_I2S_INT_MASK, 6, bl);
}

#if 0
static void wm_i2s_txover_int_mask(bool bl)
{
	tls_bitband_write(HR_I2S_INT_MASK, 5, bl);
}

static void wm_i2s_txuderflow_int_mask(bool bl)
{
	tls_bitband_write(HR_I2S_INT_MASK, 4, bl);
}

static void wm_i2s_rxdone_int_mask(bool bl)
{
	tls_bitband_write(HR_I2S_INT_MASK, 3, bl);
}
#endif

static void wm_i2s_rxth_int_mask(bool bl)
{
	tls_bitband_write(HR_I2S_INT_MASK, 2, bl);
}

#if 0
static void wm_i2s_rx_overflow_int_mask(bool bl)
{
	tls_bitband_write(HR_I2S_INT_MASK, 1, bl);
}

static void wm_i2s_rx_uderflow_int_mask(bool bl)
{
	tls_bitband_write(HR_I2S_INT_MASK, 0, bl);
}
#endif

void wm_i2s_set_freq(uint32_t lr_freq, uint32_t mclk) 
{
	uint32_t div, mclk_div;
	uint32_t temp;
	uint8_t wdwidth, stereo;
    
	temp = I2S->CTRL;
	wdwidth = (((temp>>4)&0x03)+1)<<3;
	stereo = tls_bitband_read(HR_I2S_CTRL, 22) ? 1:2;
	stereo = 2;
    div = (I2S_CLK + lr_freq * wdwidth * stereo)/(lr_freq * wdwidth * stereo) - 1;
    
#if FPGA_800_I2S
	div = div/2;
#else
	div = div;
#endif

	//Mclk should be set bigger than sample_rate * 256.
	//mclk_div = I2S_CLK / ( freq*256 ) + 1;
	mclk_div = I2S_CLK / mclk;

	(mclk_div > 0x3F)?(mclk_div = 0x3F):(mclk_div = mclk_div);

	*(volatile uint32_t *)HR_CLK_I2S_CTL &= ~0x3FFFF;
	//set bclk div ,mclk div, inter clk be used, mclk enabled.
	*(volatile uint32_t *)HR_CLK_I2S_CTL |= (uint32_t)(div<<8 | mclk_div<<2 | 2);
}

#if 0
static void wm_i2s_set_freq_exclk(uint32_t freq, uint32_t exclk)
{
	uint32_t div;
	uint32_t temp;
	uint8_t wdwidth, stereo;
	
	temp = I2S->CTRL;
	wdwidth = (((temp>>4)&0x03)+1)<<3;
	stereo = tls_bitband_read(HR_I2S_CTRL, 22) ? 1:2;	
	div = (exclk * 2 + freq * wdwidth * stereo)/(2* freq * wdwidth * stereo) - 1;
	
	*(volatile uint32_t *)HR_CLK_I2S_CTL &= ~0x3FF00;
	*(volatile uint32_t *)HR_CLK_I2S_CTL |= (uint32_t)div<<8;	
	*(volatile uint32_t *)HR_CLK_I2S_CTL |= 0x01;
}
#endif

static void wm_i2s_int_clear_all(void)
{
	tls_reg_write32(HR_I2S_INT_SRC, 0x3FF);
}

static void wm_i2s_int_mask_all(void)
{
	tls_reg_write32(HR_I2S_INT_MASK, 0x3FF);
}

static void wm_i2s_dma_start(uint8_t ch)
{
	DMA_CHNLCTRL_REG(ch) = DMA_CHNL_CTRL_CHNL_ON;
}

#if 0
static void wm_i2s_dma_stop(uint8_t ch)
{
	if(DMA_CHNLCTRL_REG(ch) & DMA_CHNL_CTRL_CHNL_ON)
	{
		DMA_CHNLCTRL_REG(ch) |= DMA_CHNL_CTRL_CHNL_OFF;

		while(DMA_CHNLCTRL_REG(ch) & DMA_CHNL_CTRL_CHNL_ON);
	}
}
#endif

static void wm_i2s_module_reset(void)
{
	tls_bitband_write(HR_CLK_RST_CTL, 24, 0);
	tls_bitband_write(HR_CLK_RST_CTL, 24, 1);
}

static void wm_i2s_dma_tx_init(uint8_t ch, uint32_t count, int16_t *buf)
{	
	DMA_INTMASK_REG &= ~(0x02<<(ch*2));
	DMA_SRCADDR_REG(ch) = (uint32_t )buf;
	DMA_DESTADDR_REG(ch) = HR_I2S_TX;
	
	DMA_CTRL_REG(ch) = DMA_CTRL_SRC_ADDR_INC | DMA_CTRL_DATA_SIZE_WORD | DMA_CTRL_BURST_SIZE1;
	DMA_MODE_REG(ch) = DMA_MODE_SEL_I2S_TX | DMA_MODE_HARD_MODE;
	DMA_CTRL_REG(ch) &= ~0xFFFF00;
	DMA_CTRL_REG(ch) |= (count<<8);
}

static void wm_i2s_dma_rx_init(uint8_t ch, uint32_t count, int16_t * buf)
{
	
	DMA_INTMASK_REG &=~(0x02<<(ch*2));
	DMA_SRCADDR_REG(ch) = HR_I2S_RX;
	DMA_DESTADDR_REG(ch) = (uint32_t )buf;
	
	DMA_CTRL_REG(ch) = DMA_CTRL_DEST_ADDR_INC | DMA_CTRL_DATA_SIZE_WORD | DMA_CTRL_BURST_SIZE1;
	DMA_MODE_REG(ch) = DMA_MODE_SEL_I2S_RX | DMA_MODE_HARD_MODE;
	DMA_CTRL_REG(ch) &= ~0xFFFF00;
	DMA_CTRL_REG(ch) |= (count<<8);
}

ATTRIBUTE_ISR void i2s_I2S_IRQHandler(void)
{	
	volatile uint32_t temp;
	volatile uint8_t fifo_level, cnt;	
	csi_kernel_intrpt_enter();
	/* TxTH*/
	if ((M32(HR_I2S_INT_SRC) >> 6) & 0x1)
	{	
		if (wm_i2s_buf->txtail < wm_i2s_buf->txlen)
		{
			for(fifo_level = ((I2S->INT_STATUS >> 4)& 0x0F),temp = 0; temp < 8-fifo_level; temp++)
			{
				tls_reg_write32(HR_I2S_TX, wm_i2s_buf->txbuf[wm_i2s_buf->txtail++]);
				if (wm_i2s_buf->txtail >= wm_i2s_buf->txlen)
				{
					wm_i2s_buf->txtail = 0;
					wm_i2s_buf->txdata_done = 1;
					tls_bitband_write(HR_I2S_INT_MASK, 6, 1);
					break;
				}
			}
		}
		//printf("s\n");
        tls_reg_write32(HR_I2S_INT_SRC, 0x40);
	}
	/*LZC */
	if (tls_bitband_read(HR_I2S_INT_SRC, 9))
	{
        tls_reg_write32(HR_I2S_INT_SRC, 0x200);
	}
	/*RZC */
	if (tls_bitband_read(HR_I2S_INT_SRC, 8) )
	{
        tls_reg_write32(HR_I2S_INT_SRC, 0x100);
	}
	/* Tx Done*/
	if (tls_bitband_read(HR_I2S_INT_SRC, 7) )
	{
        tls_reg_write32(HR_I2S_INT_SRC, 0x80);
	}
	/*TXOV*/
	if (tls_bitband_read(HR_I2S_INT_SRC, 5) )
	{
        tls_reg_write32(HR_I2S_INT_SRC, 0x20);
	}
	/*TXUD*/
	if (tls_bitband_read(HR_I2S_INT_SRC, 4) )
	{
		tls_reg_write32(HR_I2S_INT_SRC, 0x10);		
	}
	/* Rx Done*/
	if (tls_bitband_read(HR_I2S_INT_SRC, 3) )
	{
        tls_reg_write32(HR_I2S_INT_SRC, 0x08);
	}	
	/* RxTH */
	if (tls_bitband_read(HR_I2S_INT_SRC, 2) )
	{		
		for(cnt = (I2S->INT_STATUS & 0x0F),temp = 0; temp < cnt; temp++)
		{
			if (wm_i2s_buf->rxhead < wm_i2s_buf->rxlen)
			{
				wm_i2s_buf->rxbuf[wm_i2s_buf->rxhead++] = I2S->RX;
				if (wm_i2s_buf->rxhead >= wm_i2s_buf->rxlen)
				{
					wm_i2s_buf->rxhead = 0;
					wm_i2s_buf->rxdata_ready = 1;
					tls_bitband_write(HR_I2S_INT_MASK, 2, 1);
					break;
				}
			}
		}
        tls_reg_write32(HR_I2S_INT_SRC, 0x04);
	}
	/*RXOV*/
	if (tls_bitband_read(HR_I2S_INT_SRC, 1) )
	{
        tls_reg_write32(HR_I2S_INT_SRC, 0x02);
	}
	/*RXUD*/
	if (tls_bitband_read(HR_I2S_INT_SRC, 0) )
	{
        tls_reg_write32(HR_I2S_INT_SRC, 0x01);
	}
	csi_kernel_intrpt_exit();
}

void i2s_DMA_TX_Channel_IRQHandler(void *p)
{
	wm_dma_handler_type *hdma = (wm_dma_handler_type *)p;
	wm_dma_desc *dma_desc = &g_dma_desc_tx[0];
	if(p)
	{
		if(wm_i2s_buf->txdata_done)
		{
			wm_i2s_buf->txdata_done = 0;
			dma_desc[1].valid |= (1 << 31);
			if(hdma->XferCpltCallback)
			{
				hdma->XferCpltCallback(hdma);
			}
		}
		else
		{
			wm_i2s_buf->txdata_done = 1;
			dma_desc[0].valid |= (1 << 31);
			if(hdma->XferHalfCpltCallback)
			{
				hdma->XferHalfCpltCallback(hdma);
			}
		}
	}
	else
	{
		wm_i2s_buf->txdata_done = 1;
	}
}

void i2s_DMA_RX_Channel_IRQHandler(void *p)
{	
	wm_dma_handler_type *hdma = (wm_dma_handler_type *)p;
	wm_dma_desc *dma_desc = &g_dma_desc_rx[0];
	if(p)
	{
		if(wm_i2s_buf->rxdata_ready)
		{
			wm_i2s_buf->rxdata_ready = 0;
			dma_desc[1].valid |= (1 << 31);
			if(hdma->XferCpltCallback)
			{
				hdma->XferCpltCallback(hdma);
			}
		}
		else
		{
			wm_i2s_buf->rxdata_ready = 1;
			dma_desc[0].valid |= (1 << 31);
			if(hdma->XferHalfCpltCallback)
			{
				hdma->XferHalfCpltCallback(hdma);
			}
		}
	}
	else
	{
		wm_i2s_buf->rxdata_ready = 1;
	}
}

void wm_i2s_register_callback(tls_i2s_callback callback)
{
	wm_i2s_buf->tx_callback = callback;
}

int wm_i2s_port_init(I2S_InitDef *opts)
{
	I2S_InitDef opt = { I2S_MODE_MASTER, I2S_CTRL_STEREO, I2S_RIGHT_CHANNEL, I2S_Standard, I2S_DataFormat_16, 8000, 5000000 };
	
	if(NULL != opts)
	{
		memcpy(&opt, opts, sizeof(I2S_InitDef));
	}

	wm_i2s_module_reset();
    
    tls_reg_write32(HR_I2S_CTRL, 0);
    wm_i2s_set_mode(opt.I2S_Mode_MS);
	wm_i2s_int_clear_all();
	wm_i2s_int_mask_all();

	wm_i2s_mono_select(opt.I2S_Mode_SS);
	wm_i2s_left_channel_sel(opt.I2S_Mode_LR);
	wm_i2s_set_format(opt.I2S_Trans_STD);
	wm_i2s_set_word_len(opt.I2S_DataFormat);
	wm_i2s_set_freq(opt.I2S_AudioFreq, opt.I2S_MclkFreq);
	wm_i2s_set_txth(4);
	wm_i2s_set_rxth(4);

//    tx_channel = tls_dma_request(WM_I2S_TX_DMA_CHANNEL, TLS_DMA_FLAGS_CHANNEL_SEL(TLS_DMA_SEL_I2S_TX) | TLS_DMA_FLAGS_HARD_MODE);
//	rx_channel = tls_dma_request(WM_I2S_RX_DMA_CHANNEL, TLS_DMA_FLAGS_CHANNEL_SEL(TLS_DMA_SEL_I2S_RX) | TLS_DMA_FLAGS_HARD_MODE);
//
//	if (tx_channel == 0 || rx_channel == 0)
//    {
//        return WM_FAILED;
//    }
//    if (tls_dma_stop(tx_channel) || tls_dma_stop(rx_channel))
//    {
//        return WM_FAILED;
//    }
//
//    tls_dma_irq_register(tx_channel, i2s_DMA_TX_Channel_IRQHandler, NULL, TLS_DMA_IRQ_TRANSFER_DONE);
//    tls_dma_irq_register(rx_channel, i2s_DMA_RX_Channel_IRQHandler, NULL, TLS_DMA_IRQ_TRANSFER_DONE);

	return WM_SUCCESS;
}

void wm_i2s_tx_rx_stop(void)
{
//	if( I2S_MODE_MASTER==wm_i2s_get_mode() )
//	{
//		int i;
//
//		for(i = 0; i < APPEND_NUM; i++)
//		{
//			tls_reg_write32(HR_I2S_TX, 0x00);
//		}
//		wm_i2s_tx_enable(1);
//		while( tls_reg_read32(HR_I2S_STATUS)&0xF0 );
//	}
	wm_i2s_tx_enable(0);
	wm_i2s_rx_enable(0);
	
	tls_dma_free(tx_channel);
	tls_dma_free(rx_channel);
	
	wm_i2s_enable(0);
}

int wm_i2s_tx_int(int16_t *data, uint16_t len, int16_t *next_data)
{	
	volatile uint32_t temp;
	volatile uint8_t fifo_level;

	if((data == NULL) || (len == 0)) {
		return  WM_FAILED;
	}
	wm_i2s_buf->txlen = (uint32_t)len;
	wm_i2s_buf->txtail = 0;
	wm_i2s_buf->txbuf = (uint32_t *)data;
	wm_i2s_buf->txdata_done = 0;

	wm_i2s_set_mode(I2S_MODE_MASTER);
	wm_i2s_txth_int_mask(0);
	wm_i2s_tx_fifo_clear();
	tls_irq_enable(I2S_IRQn);
	wm_i2s_tx_enable(1);

	for(fifo_level = ((I2S->INT_STATUS >> 4)& 0x0F),temp = 0; temp < 8-fifo_level; temp++)
	{
		tls_reg_write32(HR_I2S_TX, wm_i2s_buf->txbuf[wm_i2s_buf->txtail++]);
	}
	wm_i2s_enable(1);

	if((wm_i2s_buf->tx_callback != NULL) && (next_data != NULL))
	{
		wm_i2s_buf->tx_callback((uint32_t *)next_data, &len);
	}
	while( wm_i2s_buf->txdata_done == 0 );
	while( tls_reg_read32(HR_I2S_STATUS)&0xF0 );
	
	return WM_SUCCESS;
}

int wm_i2s_tx_dma(int16_t *data, uint16_t len, int16_t *next_data)
{		
	if((data == NULL) || (len == 0)) {
			return  WM_FAILED;
	}
	wm_i2s_buf->txdata_done = 0;
	
	wm_i2s_set_mode(I2S_MODE_MASTER);
	wm_i2s_dma_tx_init(tx_channel, len*4, data);
	wm_i2s_dma_start(tx_channel);
	wm_i2s_tx_dma_enable(1);
	wm_i2s_tx_enable(1);
	wm_i2s_enable(1);

	if((wm_i2s_buf->tx_callback != NULL) && (next_data != NULL))
	{
		wm_i2s_buf->tx_callback((uint32_t *)next_data, &len);
	}
	while( wm_i2s_buf->txdata_done == 0 );
	while( tls_reg_read32(HR_I2S_STATUS)&0xF0 );

	return WM_SUCCESS;
}

int wm_i2s_tx_dma_link(int16_t *data, uint16_t len, int16_t *next_data)
{	
	if((data == NULL) || (next_data == NULL) || (len == 0)) {
			return  WM_FAILED;
	}
	uint32_t dma_ctrl;
	wm_dma_desc dma_desc[2];
	
	wm_i2s_buf->txdata_done = 0;	
	wm_i2s_set_mode(I2S_MODE_MASTER);
	
	dma_ctrl = DMA_CTRL_SRC_ADDR_INC | DMA_CTRL_DATA_SIZE_WORD | DMA_CTRL_BURST_SIZE1;
	dma_ctrl &= ~ 0xFFFF00;
	dma_ctrl |= ((len*2)<<8);

	dma_desc[0].next = &dma_desc[1];
	dma_desc[0].dest_addr = HR_I2S_TX;
	dma_desc[0].src_addr = (unsigned int)data;
	dma_desc[0].dma_ctrl = dma_ctrl>>1;
	dma_desc[0].valid = 0x80000000;

	dma_desc[1].next = &dma_desc[0];
	dma_desc[1].dest_addr = HR_I2S_TX;
	dma_desc[1].src_addr = (unsigned int)next_data;
	dma_desc[1].dma_ctrl = dma_ctrl>>1;
	dma_desc[1].valid = 0x80000000;
	
	DMA_INTMASK_REG &= ~(0x02<<(tx_channel*2));
	DMA_MODE_REG(tx_channel) = DMA_MODE_SEL_I2S_TX | DMA_MODE_CHAIN_MODE | DMA_MODE_HARD_MODE | (1<<6);
	tls_reg_write32(HR_DMA_CHNL0_LINK_DEST_ADDR + 0x30*tx_channel, (uint32_t)dma_desc);
	
	wm_i2s_dma_start(tx_channel);
	wm_i2s_tx_dma_enable(1);
	wm_i2s_tx_enable(1);
	wm_i2s_enable(1);

	while(1)
	{
		if( dma_desc[0].valid == 0 )
		{
			dma_desc[0].valid = 0x80000000;
			if(wm_i2s_buf->tx_callback != NULL)
			{
				wm_i2s_buf->tx_callback((uint32_t *)data, &len);
			}
		}
		if( dma_desc[1].valid == 0 )
		{
			dma_desc[1].valid = 0x80000000;
			if(wm_i2s_buf->tx_callback != NULL)
			{
				wm_i2s_buf->tx_callback((uint32_t *)next_data, &len);
			}
		}
		/* todo: a way to break this rountine */
		if( len == 0xFFFF )
		{
			break;
		}
	}

	return WM_SUCCESS;
}

int wm_i2s_rx_int(int16_t *data, uint16_t len)
{	
	if((data == NULL) || (len == 0)) {
			return  WM_FAILED;
	}
	wm_i2s_buf->rxbuf = (uint32_t *)data;
	wm_i2s_buf->rxlen = (uint32_t)len;
	wm_i2s_buf->rxhead = 0;
	wm_i2s_buf->rxdata_ready = 0;

    wm_i2s_set_mode(I2S_MODE_SLAVE);	
	wm_i2s_rxth_int_mask(0);
	wm_i2s_rx_fifo_clear();
	tls_irq_enable(I2S_IRQn);
	wm_i2s_rx_enable(1);	
	wm_i2s_enable(1);
	
	while( wm_i2s_buf->rxdata_ready == 0 );

	return WM_SUCCESS;
}

int wm_i2s_rx_dma(int16_t *data, uint16_t len)
{	
	if((data == NULL) || (len == 0)) {
			return  WM_FAILED;
	}
	wm_i2s_buf->rxdata_ready = 0;
	
	wm_i2s_set_mode(I2S_MODE_SLAVE);
	wm_i2s_dma_rx_init(rx_channel, len*4, data);
	wm_i2s_dma_start(rx_channel);
	wm_i2s_rx_dma_enable(1);	
	wm_i2s_rx_enable(1);	
	wm_i2s_enable(1);

	while( wm_i2s_buf->rxdata_ready == 0 );

	return WM_SUCCESS;
}

int wm_i2s_tx_rx_int(I2S_InitDef *opts, int16_t *data_tx, int16_t *data_rx, uint16_t len)
{
	if((data_tx == NULL) || (data_rx == NULL) || (len == 0)) {
		return  WM_FAILED;
	}
	wm_i2s_buf->txbuf = (uint32_t *)data_tx;
	wm_i2s_buf->txlen = (uint32_t)len;
	wm_i2s_buf->txtail = 0;
	wm_i2s_buf->txdata_done = 0;

	wm_i2s_buf->rxbuf = (uint32_t *)data_rx;
	wm_i2s_buf->rxlen = (uint32_t)len;
	wm_i2s_buf->rxhead = 0;
	wm_i2s_buf->rxdata_ready = 0;
	
    wm_i2s_set_mode(opts->I2S_Mode_MS);
#if TEST_WITH_F401
	( opts->I2S_Trans_STD==I2S_Standard || opts->I2S_Trans_STD==I2S_Standard_MSB )?(wm_i2s_clk_inverse(0)):(wm_i2s_clk_inverse(1));
#endif
	wm_i2s_txth_int_mask(0);
    wm_i2s_rxth_int_mask(0);
	tls_irq_enable(I2S_IRQn);
	wm_i2s_tx_enable(1);
    wm_i2s_rx_enable(1);
	wm_i2s_enable(1);

	while( wm_i2s_buf->txdata_done == 0 || wm_i2s_buf->rxdata_ready == 0);
	while( tls_reg_read32(HR_I2S_STATUS)&0xF0 );
	
	return WM_SUCCESS;
}

int wm_i2s_tx_rx_dma(I2S_InitDef *opts, int16_t *data_tx, int16_t *data_rx, uint16_t len)
{	
	if((data_tx == NULL) || (data_rx == NULL) || (len == 0)) {
			return  WM_FAILED;
	}
	wm_i2s_buf->txdata_done = 0;
	wm_i2s_buf->rxdata_ready = 0;
	
	wm_i2s_set_mode(opts->I2S_Mode_MS);
#if TEST_WITH_F401	
	( opts->I2S_Trans_STD==I2S_Standard || opts->I2S_Trans_STD==I2S_Standard_MSB )?(wm_i2s_clk_inverse(0)):(wm_i2s_clk_inverse(1));
#endif
	wm_i2s_tx_dma_enable(1);
    wm_i2s_rx_dma_enable(1);
    wm_i2s_tx_enable(1);
	wm_i2s_rx_enable(1);
    wm_i2s_dma_tx_init(tx_channel, len*4, data_tx);
    wm_i2s_dma_rx_init(rx_channel, len*4, data_rx);
	wm_i2s_dma_start(tx_channel);
    wm_i2s_dma_start(rx_channel);
	wm_i2s_enable(1);

	while( wm_i2s_buf->txdata_done == 0 || wm_i2s_buf->rxdata_ready == 0);
	while( tls_reg_read32(HR_I2S_STATUS)&0xF0 );
	
	return WM_SUCCESS;
}
int wm_i2s_receive_dma(wm_dma_handler_type *hdma, uint16_t *data, uint16_t len)
{
	uint32_t dma_ctrl;
	wm_dma_desc *dma_desc = &g_dma_desc_rx[0];
	uint16_t *next_data = &data[(len/2)];
	if((data == NULL) || (len == 0)) {
		return  WM_FAILED;
	}

	wm_i2s_buf->rxdata_ready = 0;
	//wm_i2s_set_mode(I2S_MODE_SLAVE);

	if(rx_channel)
	{
		tls_dma_free(rx_channel);
	}

	rx_channel = tls_dma_request(WM_I2S_RX_DMA_CHANNEL, TLS_DMA_FLAGS_CHANNEL_SEL(TLS_DMA_SEL_I2S_RX) | TLS_DMA_FLAGS_HARD_MODE);

	if (rx_channel == 0xFF)
	{
		return WM_FAILED;
	}
	hdma->channel = rx_channel;
	if (tls_dma_stop(rx_channel))
	{
		return WM_FAILED;
	}

    tls_dma_irq_register(rx_channel, i2s_DMA_RX_Channel_IRQHandler, hdma, TLS_DMA_IRQ_TRANSFER_DONE);

	dma_ctrl = DMA_CTRL_DEST_ADDR_INC | DMA_CTRL_DATA_SIZE_WORD | DMA_CTRL_BURST_SIZE1;
	dma_ctrl &= ~ 0xFFFF00;
	dma_ctrl |= ((len)<<8); //half length of data

	dma_desc[0].next = &dma_desc[1];
	dma_desc[0].dest_addr = (unsigned int)data;
	dma_desc[0].src_addr = HR_I2S_RX;
	dma_desc[0].dma_ctrl = dma_ctrl>>1;
	dma_desc[0].valid = 0x80000000;

	dma_desc[1].next = &dma_desc[0];
	dma_desc[1].dest_addr = (unsigned int)next_data;
	dma_desc[1].src_addr = HR_I2S_RX;
	dma_desc[1].dma_ctrl = dma_ctrl>>1;
	dma_desc[1].valid = 0x80000000;

	DMA_INTMASK_REG &= ~(0x02<<(rx_channel*2));
	DMA_MODE_REG(rx_channel) = DMA_MODE_SEL_I2S_RX | DMA_MODE_CHAIN_MODE | DMA_MODE_HARD_MODE | DMA_MODE_CHAIN_LINK_EN;
	tls_reg_write32(HR_DMA_CHNL0_LINK_DEST_ADDR + 0x30*rx_channel, (uint32_t)dma_desc);

	wm_i2s_dma_start(rx_channel);
	wm_i2s_rx_dma_enable(1);
	wm_i2s_rx_enable(1);
	wm_i2s_enable(1);
	return WM_SUCCESS;
}
int wm_i2s_transmit_dma(wm_dma_handler_type *hdma, uint16_t *data, uint16_t len)
{
	uint32_t dma_ctrl;
	wm_dma_desc *dma_desc = &g_dma_desc_tx[0];
	uint16_t *next_data = &data[(len/2)];
	if((data == NULL) || (len == 0)) {
		return  WM_FAILED;
	}

	wm_i2s_buf->txdata_done = 0;
	//wm_i2s_set_mode(I2S_MODE_MASTER);

	if(tx_channel)
	{
		tls_dma_free(tx_channel);
	}

	tx_channel = tls_dma_request(WM_I2S_TX_DMA_CHANNEL, TLS_DMA_FLAGS_CHANNEL_SEL(TLS_DMA_SEL_I2S_TX) | TLS_DMA_FLAGS_HARD_MODE);

	if (tx_channel == 0xFF)
	{
		return WM_FAILED;
	}
	hdma->channel = tx_channel;
	if (tls_dma_stop(tx_channel))
	{
		return WM_FAILED;
	}

	tls_dma_irq_register(tx_channel, i2s_DMA_TX_Channel_IRQHandler, hdma, TLS_DMA_IRQ_TRANSFER_DONE);

	dma_ctrl = DMA_CTRL_SRC_ADDR_INC | DMA_CTRL_DATA_SIZE_WORD | DMA_CTRL_BURST_SIZE1;
	dma_ctrl &= ~ 0xFFFF00;
	dma_ctrl |= ((len)<<8); //half length of data

	dma_desc[0].next = &dma_desc[1];
	dma_desc[0].dest_addr = HR_I2S_TX;
	dma_desc[0].src_addr = (unsigned int)data;
	dma_desc[0].dma_ctrl = dma_ctrl>>1;
	dma_desc[0].valid = 0x80000000;

	dma_desc[1].next = &dma_desc[0];
	dma_desc[1].dest_addr = HR_I2S_TX;
	dma_desc[1].src_addr = (unsigned int)next_data;
	dma_desc[1].dma_ctrl = dma_ctrl>>1;
	dma_desc[1].valid = 0x80000000;

	DMA_INTMASK_REG &= ~(0x02<<(tx_channel*2));
	DMA_MODE_REG(tx_channel) = DMA_MODE_SEL_I2S_TX | DMA_MODE_CHAIN_MODE | DMA_MODE_HARD_MODE | DMA_MODE_CHAIN_LINK_EN;
	tls_reg_write32(HR_DMA_CHNL0_LINK_DEST_ADDR + 0x30*tx_channel, (uint32_t)dma_desc);

	wm_i2s_dma_start(tx_channel);
	wm_i2s_tx_dma_enable(1);
	wm_i2s_tx_enable(1);
	wm_i2s_enable(1);
	return WM_SUCCESS;
}

int wm_i2s_tranceive_dma(uint32_t i2s_mode, wm_dma_handler_type *hdma_tx, wm_dma_handler_type *hdma_rx, uint16_t *data_tx, uint16_t *data_rx, uint16_t len)
{
	uint32_t dma_ctrl;
	wm_dma_desc *dma_desc_tx = &g_dma_desc_tx[0];
	wm_dma_desc *dma_desc_rx = &g_dma_desc_rx[0];
	uint16_t *next_data_tx = &data_tx[(len/2)];
	uint16_t *next_data_rx = &data_rx[(len/2)];
	if((data_tx == NULL) || (data_rx == NULL) || (len == 0)) {
		return  WM_FAILED;
	}

	wm_i2s_buf->txdata_done = 0;
	wm_i2s_buf->rxdata_ready = 0;
	wm_i2s_set_mode(i2s_mode);

	if(tx_channel)
	{
		tls_dma_free(tx_channel);
	}

	tx_channel = tls_dma_request(WM_I2S_TX_DMA_CHANNEL, TLS_DMA_FLAGS_CHANNEL_SEL(TLS_DMA_SEL_I2S_TX) | TLS_DMA_FLAGS_HARD_MODE);

	if (tx_channel == 0xFF)
	{
		return WM_FAILED;
	}
	hdma_tx->channel = tx_channel;
	if (tls_dma_stop(tx_channel))
	{
		return WM_FAILED;
	}

	tls_dma_irq_register(tx_channel, i2s_DMA_TX_Channel_IRQHandler, hdma_tx, TLS_DMA_IRQ_TRANSFER_DONE);

	dma_ctrl = DMA_CTRL_SRC_ADDR_INC | DMA_CTRL_DATA_SIZE_WORD | DMA_CTRL_BURST_SIZE1;
	dma_ctrl &= ~ 0xFFFF00;
	dma_ctrl |= ((len)<<8); //half length of data

	dma_desc_tx[0].next = &dma_desc_tx[1];
	dma_desc_tx[0].dest_addr = HR_I2S_TX;
	dma_desc_tx[0].src_addr = (unsigned int)data_tx;
	dma_desc_tx[0].dma_ctrl = dma_ctrl>>1;
	dma_desc_tx[0].valid = 0x80000000;

	dma_desc_tx[1].next = &dma_desc_tx[0];
	dma_desc_tx[1].dest_addr = HR_I2S_TX;
	dma_desc_tx[1].src_addr = (unsigned int)next_data_tx;
	dma_desc_tx[1].dma_ctrl = dma_ctrl>>1;
	dma_desc_tx[1].valid = 0x80000000;

//	DMA_INTMASK_REG |= (0x03<<(tx_channel*2));
	DMA_MODE_REG(tx_channel) = DMA_MODE_SEL_I2S_TX | DMA_MODE_CHAIN_MODE | DMA_MODE_HARD_MODE | DMA_MODE_CHAIN_LINK_EN;
	tls_reg_write32(HR_DMA_CHNL0_LINK_DEST_ADDR + 0x30*tx_channel, (uint32_t)dma_desc_tx);

	if(rx_channel)
	{
		tls_dma_free(rx_channel);
	}

	rx_channel = tls_dma_request(WM_I2S_RX_DMA_CHANNEL, TLS_DMA_FLAGS_CHANNEL_SEL(TLS_DMA_SEL_I2S_RX) | TLS_DMA_FLAGS_HARD_MODE);

	if (rx_channel == 0xFF)
	{
		return WM_FAILED;
	}
	hdma_rx->channel = rx_channel;
	if (tls_dma_stop(rx_channel))
	{
		return WM_FAILED;
	}

    tls_dma_irq_register(rx_channel, i2s_DMA_RX_Channel_IRQHandler, hdma_rx, TLS_DMA_IRQ_TRANSFER_DONE);

	dma_ctrl = DMA_CTRL_DEST_ADDR_INC | DMA_CTRL_DATA_SIZE_WORD | DMA_CTRL_BURST_SIZE1;
	dma_ctrl &= ~ 0xFFFF00;
	dma_ctrl |= ((len)<<8); //half length of data

	dma_desc_rx[0].next = &dma_desc_rx[1];
	dma_desc_rx[0].dest_addr = (unsigned int)data_rx;
	dma_desc_rx[0].src_addr = HR_I2S_RX;
	dma_desc_rx[0].dma_ctrl = dma_ctrl>>1;
	dma_desc_rx[0].valid = 0x80000000;

	dma_desc_rx[1].next = &dma_desc_rx[0];
	dma_desc_rx[1].dest_addr = (unsigned int)next_data_rx;
	dma_desc_rx[1].src_addr = HR_I2S_RX;
	dma_desc_rx[1].dma_ctrl = dma_ctrl>>1;
	dma_desc_rx[1].valid = 0x80000000;

//	DMA_INTMASK_REG &= ~(0x02<<(rx_channel*2));
	DMA_MODE_REG(rx_channel) = DMA_MODE_SEL_I2S_RX | DMA_MODE_CHAIN_MODE | DMA_MODE_HARD_MODE | DMA_MODE_CHAIN_LINK_EN;
	tls_reg_write32(HR_DMA_CHNL0_LINK_DEST_ADDR + 0x30*rx_channel, (uint32_t)dma_desc_rx);

	wm_i2s_dma_start(rx_channel);
	wm_i2s_rx_dma_enable(1);
	wm_i2s_rx_enable(1);

	wm_i2s_dma_start(tx_channel);
	wm_i2s_tx_dma_enable(1);
	wm_i2s_tx_enable(1);
	wm_i2s_enable(1);
	return WM_SUCCESS;
}

/**
  *******************************************************
  *               TEST CODE IS BELOW
  *******************************************************
  */

#if 0

#define UNIT_SIZE   2*1024
#define PCM_ADDRDSS 0x100000
#define FIRM_SIZE   940

int16_t data_1[2][UNIT_SIZE];


void i2s_demo_callback_play(int16_t *data, uint32_t *len)
{
	static int number = 0;

	tls_fls_read(PCM_ADDRDSS+number*UNIT_SIZE*2, data, UNIT_SIZE*2);

	number ++;
	if( number > FIRM_SIZE/UNIT_SIZE/1024/2 )
	{
		number = 0;
		*len = 0xFFFF;
	}
	printf("%d, %x\n", number, data[0]);
}

void wm_i2s_play_demo(void)
{
	wm_i2s_ck_config(WM_IO_PB_08);
	wm_i2s_ws_config(WM_IO_PB_09);
	wm_i2s_di_config(WM_IO_PB_10);
	wm_i2s_do_config(WM_IO_PB_11);

	wm_i2s_mclk_config(WM_IO_PA_00);
	
	//wm_i2c_scl_config(WM_IO_PA_01);
	//wm_i2c_sda_config(WM_IO_PA_04);

	//CodecInit();
	//CodecSetSampleRate(cur_sample_rate);

	//CodecMute(1);
	//CodecMute(0);

	I2S_InitDef i2s_config = { I2S_MODE_MASTER, I2S_CTRL_MONO, I2S_RIGHT_CHANNEL, I2S_Standard, I2S_DataFormat_16, 8000, 5000000 };
	int i;
	
	wm_i2s_port_init(&i2s_config);
	wm_i2s_register_callback(i2s_demo_callback_play);
	memset(data_1[0], 1, sizeof(data_1[0]));
	memset(data_1[1], 2, sizeof(data_1[1]));
	
	printf("1\n");
	//wm_i2s_tx_int(data_1[0], UNIT_SIZE, data_1[1]);
	
	//wm_i2s_tx_dma(data_1[0], UNIT_SIZE, data_1[1]);
	
	//wm_i2s_tx_dma_link(data_1[0], UNIT_SIZE, data_1[1]);
	
	//wm_i2s_rx_int(data_1[0], UNIT_SIZE);
	//for( i=0; i<UNIT_SIZE; i++ ) { printf("%x\n", data_1[0][i]); }

	//wm_i2s_rx_dma(data_1[0], UNIT_SIZE);
	//for( i=0; i<UNIT_SIZE; i++ ) { printf("%x\n", data_1[0][i]); }

	//wm_i2s_tx_rx_int(&i2s_config, data_1[0], data_1[1], UNIT_SIZE);
	//for( i=0; i<UNIT_SIZE; i++ ) { printf("%x\n", data_1[1][i]); }

	wm_i2s_tx_rx_dma(&i2s_config, data_1[0], data_1[1], UNIT_SIZE);
	for( i=0; i<UNIT_SIZE; i++ ) { printf("%x\n", data_1[1][i]); }
	
	printf("2\n");

	wm_i2s_tx_rx_stop();
	printf("stop\n");
}

#endif