sound/soc/amd/acp/acp-i2s.c - linux - Git at Google

 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
 //
 // This file is provided under a dual BSD/GPLv2 license. When using or
 // redistributing this file, you may do so under either license.
 //
 // Copyright(c) 2021 Advanced Micro Devices, Inc.
 //
 // Authors: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
 //

 /*
  * Generic Hardware interface for ACP Audio I2S controller
  */

 #include <linux/platform_device.h>
 #include <linux/module.h>
 #include <linux/err.h>
 #include <linux/io.h>
 #include <sound/pcm_params.h>
 #include <sound/soc.h>
 #include <sound/soc-dai.h>
 #include <linux/dma-mapping.h>

 #include "amd.h"

 #define DRV_NAME "acp_i2s_playcap"

 static int acp_i2s_hwparams(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params,
 			    struct snd_soc_dai *dai)
 {
 	struct device *dev = dai->component->dev;
 	struct acp_dev_data *adata;
 	u32 val;
 	u32 xfer_resolution;
 	u32 reg_val;

 	adata = snd_soc_dai_get_drvdata(dai);

 	/* These values are as per Hardware Spec */
 	switch (params_format(params)) {
 	case SNDRV_PCM_FORMAT_U8:
 	case SNDRV_PCM_FORMAT_S8:
 		xfer_resolution = 0x0;
 		break;
 	case SNDRV_PCM_FORMAT_S16_LE:
 		xfer_resolution = 0x02;
 		break;
 	case SNDRV_PCM_FORMAT_S24_LE:
 		xfer_resolution = 0x04;
 		break;
 	case SNDRV_PCM_FORMAT_S32_LE:
 		xfer_resolution = 0x05;
 		break;
 	default:
 		return -EINVAL;
 	}

 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 		switch (dai->driver->id) {
 		case I2S_BT_INSTANCE:
 			reg_val = ACP_BTTDM_ITER;
 			break;
 		case I2S_SP_INSTANCE:
 			reg_val = ACP_I2STDM_ITER;
 			break;
 		default:
 			dev_err(dev, "Invalid dai id %x\n", dai->driver->id);
 			return -EINVAL;
 		}
 	} else {
 		switch (dai->driver->id) {
 		case I2S_BT_INSTANCE:
 			reg_val = ACP_BTTDM_IRER;
 			break;
 		case I2S_SP_INSTANCE:
 			reg_val = ACP_I2STDM_IRER;
 			break;
 		default:
 			dev_err(dev, "Invalid dai id %x\n", dai->driver->id);
 			return -EINVAL;
 		}
 	}

 	val = readl(adata->acp_base + reg_val);
 	val &= ~ACP3x_ITER_IRER_SAMP_LEN_MASK;
 	val = val | (xfer_resolution  << 3);
 	writel(val, adata->acp_base + reg_val);

 	return 0;
 }

 static int acp_i2s_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai)
 {
 	struct acp_stream *stream = substream->runtime->private_data;
 	struct device *dev = dai->component->dev;
 	struct acp_dev_data *adata = dev_get_drvdata(dev);
 	u32 val, period_bytes, reg_val, ier_val, water_val, buf_size, buf_reg;

 	period_bytes = frames_to_bytes(substream->runtime, substream->runtime->period_size);
 	buf_size = frames_to_bytes(substream->runtime, substream->runtime->buffer_size);

 	switch (cmd) {
 	case SNDRV_PCM_TRIGGER_START:
 	case SNDRV_PCM_TRIGGER_RESUME:
 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 		stream->bytescount = acp_get_byte_count(adata, stream->dai_id, substream->stream);
 		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 			switch (dai->driver->id) {
 			case I2S_BT_INSTANCE:
 				water_val = ACP_BT_TX_INTR_WATERMARK_SIZE;
 				reg_val = ACP_BTTDM_ITER;
 				ier_val = ACP_BTTDM_IER;
 				buf_reg = ACP_BT_TX_RINGBUFSIZE;
 				break;
 			case I2S_SP_INSTANCE:
 				water_val = ACP_I2S_TX_INTR_WATERMARK_SIZE;
 				reg_val = ACP_I2STDM_ITER;
 				ier_val = ACP_I2STDM_IER;
 				buf_reg = ACP_I2S_TX_RINGBUFSIZE;
 				break;
 			default:
 				dev_err(dev, "Invalid dai id %x\n", dai->driver->id);
 				return -EINVAL;
 			}
 		} else {
 			switch (dai->driver->id) {
 			case I2S_BT_INSTANCE:
 				water_val = ACP_BT_RX_INTR_WATERMARK_SIZE;
 				reg_val = ACP_BTTDM_IRER;
 				ier_val = ACP_BTTDM_IER;
 				buf_reg = ACP_BT_RX_RINGBUFSIZE;
 				break;
 			case I2S_SP_INSTANCE:
 				water_val = ACP_I2S_RX_INTR_WATERMARK_SIZE;
 				reg_val = ACP_I2STDM_IRER;
 				ier_val = ACP_I2STDM_IER;
 				buf_reg = ACP_I2S_RX_RINGBUFSIZE;
 				break;
 			default:
 				dev_err(dev, "Invalid dai id %x\n", dai->driver->id);
 				return -EINVAL;
 			}
 		}
 		writel(period_bytes, adata->acp_base + water_val);
 		writel(buf_size, adata->acp_base + buf_reg);
 		val = readl(adata->acp_base + reg_val);
 		val = val | BIT(0);
 		writel(val, adata->acp_base + reg_val);
 		writel(1, adata->acp_base + ier_val);
 		return 0;
 	case SNDRV_PCM_TRIGGER_STOP:
 	case SNDRV_PCM_TRIGGER_SUSPEND:
 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 			switch (dai->driver->id) {
 			case I2S_BT_INSTANCE:
 				reg_val = ACP_BTTDM_ITER;
 				break;
 			case I2S_SP_INSTANCE:
 				reg_val = ACP_I2STDM_ITER;
 				break;
 			default:
 				dev_err(dev, "Invalid dai id %x\n", dai->driver->id);
 				return -EINVAL;
 			}

 		} else {
 			switch (dai->driver->id) {
 			case I2S_BT_INSTANCE:
 				reg_val = ACP_BTTDM_IRER;
 				break;
 			case I2S_SP_INSTANCE:
 				reg_val = ACP_I2STDM_IRER;
 				break;
 			default:
 				dev_err(dev, "Invalid dai id %x\n", dai->driver->id);
 				return -EINVAL;
 			}
 		}
 		val = readl(adata->acp_base + reg_val);
 		val = val & ~BIT(0);
 		writel(val, adata->acp_base + reg_val);

 		if (!(readl(adata->acp_base + ACP_BTTDM_ITER) & BIT(0)) &&
 		    !(readl(adata->acp_base + ACP_BTTDM_IRER) & BIT(0)))
 			writel(0, adata->acp_base + ACP_BTTDM_IER);
 		if (!(readl(adata->acp_base + ACP_I2STDM_ITER) & BIT(0)) &&
 		    !(readl(adata->acp_base + ACP_I2STDM_IRER) & BIT(0)))
 			writel(0, adata->acp_base + ACP_I2STDM_IER);
 		return 0;
 	default:
 		return -EINVAL;
 	}

 	return 0;
 }

 static int acp_i2s_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
 {
 	struct device *dev = dai->component->dev;
 	struct acp_dev_data *adata = dev_get_drvdata(dev);
 	struct acp_stream *stream = substream->runtime->private_data;
 	u32 reg_dma_size = 0, reg_fifo_size = 0, reg_fifo_addr = 0;
 	u32 phy_addr = 0, acp_fifo_addr = 0, ext_int_ctrl;
 	unsigned int dir = substream->stream;

 	switch (dai->driver->id) {
 	case I2S_SP_INSTANCE:
 		if (dir == SNDRV_PCM_STREAM_PLAYBACK) {
 			reg_dma_size = ACP_I2S_TX_DMA_SIZE;
 			acp_fifo_addr = ACP_SRAM_PTE_OFFSET +
 						SP_PB_FIFO_ADDR_OFFSET;
 			reg_fifo_addr =	ACP_I2S_TX_FIFOADDR;
 			reg_fifo_size = ACP_I2S_TX_FIFOSIZE;

 			phy_addr = I2S_SP_TX_MEM_WINDOW_START + stream->reg_offset;
 			writel(phy_addr, adata->acp_base + ACP_I2S_TX_RINGBUFADDR);
 		} else {
 			reg_dma_size = ACP_I2S_RX_DMA_SIZE;
 			acp_fifo_addr = ACP_SRAM_PTE_OFFSET +
 						SP_CAPT_FIFO_ADDR_OFFSET;
 			reg_fifo_addr = ACP_I2S_RX_FIFOADDR;
 			reg_fifo_size = ACP_I2S_RX_FIFOSIZE;
 			phy_addr = I2S_SP_RX_MEM_WINDOW_START + stream->reg_offset;
 			writel(phy_addr, adata->acp_base + ACP_I2S_RX_RINGBUFADDR);
 		}
 		break;
 	case I2S_BT_INSTANCE:
 		if (dir == SNDRV_PCM_STREAM_PLAYBACK) {
 			reg_dma_size = ACP_BT_TX_DMA_SIZE;
 			acp_fifo_addr = ACP_SRAM_PTE_OFFSET +
 						BT_PB_FIFO_ADDR_OFFSET;
 			reg_fifo_addr = ACP_BT_TX_FIFOADDR;
 			reg_fifo_size = ACP_BT_TX_FIFOSIZE;

 			phy_addr = I2S_BT_TX_MEM_WINDOW_START + stream->reg_offset;
 			writel(phy_addr, adata->acp_base + ACP_BT_TX_RINGBUFADDR);
 		} else {
 			reg_dma_size = ACP_BT_RX_DMA_SIZE;
 			acp_fifo_addr = ACP_SRAM_PTE_OFFSET +
 						BT_CAPT_FIFO_ADDR_OFFSET;
 			reg_fifo_addr = ACP_BT_RX_FIFOADDR;
 			reg_fifo_size = ACP_BT_RX_FIFOSIZE;

 			phy_addr = I2S_BT_TX_MEM_WINDOW_START + stream->reg_offset;
 			writel(phy_addr, adata->acp_base + ACP_BT_RX_RINGBUFADDR);
 		}
 		break;
 	default:
 		dev_err(dev, "Invalid dai id %x\n", dai->driver->id);
 		return -EINVAL;
 	}

 	writel(DMA_SIZE, adata->acp_base + reg_dma_size);
 	writel(acp_fifo_addr, adata->acp_base + reg_fifo_addr);
 	writel(FIFO_SIZE, adata->acp_base + reg_fifo_size);

 	ext_int_ctrl = readl(adata->acp_base + ACP_EXTERNAL_INTR_CNTL);
 	ext_int_ctrl |= BIT(I2S_RX_THRESHOLD) | BIT(BT_RX_THRESHOLD)
 			| BIT(I2S_TX_THRESHOLD) | BIT(BT_TX_THRESHOLD);

 	writel(ext_int_ctrl, adata->acp_base + ACP_EXTERNAL_INTR_CNTL);

 	return 0;
 }

 static int acp_i2s_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
 {
 	struct acp_stream *stream = substream->runtime->private_data;
 	struct device *dev = dai->component->dev;
 	unsigned int dir = substream->stream;
 	unsigned int irq_bit = 0;

 	switch (dai->driver->id) {
 	case I2S_SP_INSTANCE:
 		if (dir == SNDRV_PCM_STREAM_PLAYBACK) {
 			irq_bit = BIT(I2S_TX_THRESHOLD);
 			stream->pte_offset = ACP_SRAM_SP_PB_PTE_OFFSET;
 			stream->fifo_offset = SP_PB_FIFO_ADDR_OFFSET;
 		} else {
 			irq_bit = BIT(I2S_RX_THRESHOLD);
 			stream->pte_offset = ACP_SRAM_SP_CP_PTE_OFFSET;
 			stream->fifo_offset = SP_CAPT_FIFO_ADDR_OFFSET;
 		}
 		break;
 	case I2S_BT_INSTANCE:
 		if (dir == SNDRV_PCM_STREAM_PLAYBACK) {
 			irq_bit = BIT(BT_TX_THRESHOLD);
 			stream->pte_offset = ACP_SRAM_BT_PB_PTE_OFFSET;
 			stream->fifo_offset = BT_PB_FIFO_ADDR_OFFSET;
 		} else {
 			irq_bit = BIT(BT_RX_THRESHOLD);
 			stream->pte_offset = ACP_SRAM_BT_CP_PTE_OFFSET;
 			stream->fifo_offset = BT_CAPT_FIFO_ADDR_OFFSET;
 		}
 		break;
 	default:
 		dev_err(dev, "Invalid dai id %x\n", dai->driver->id);
 		return -EINVAL;
 	}

 	/* Save runtime dai configuration in stream */
 	stream->id = dai->driver->id + dir;
 	stream->dai_id = dai->driver->id;
 	stream->irq_bit = irq_bit;

 	return 0;
 }

 const struct snd_soc_dai_ops asoc_acp_cpu_dai_ops = {
 	.startup = acp_i2s_startup,
 	.hw_params = acp_i2s_hwparams,
 	.prepare = acp_i2s_prepare,
 	.trigger = acp_i2s_trigger,
 };
 EXPORT_SYMBOL_NS_GPL(asoc_acp_cpu_dai_ops, SND_SOC_ACP_COMMON);

 int asoc_acp_i2s_probe(struct snd_soc_dai *dai)
 {
 	struct device *dev = dai->component->dev;
 	struct acp_dev_data *adata = dev_get_drvdata(dev);
 	unsigned int val;

 	if (!adata->acp_base) {
 		dev_err(dev, "I2S base is NULL\n");
 		return -EINVAL;
 	}

 	val = readl(adata->acp_base + ACP_I2S_PIN_CONFIG);
 	if (val != I2S_MODE) {
 		dev_err(dev, "I2S Mode not supported val %x\n", val);
 		return -EINVAL;
 	}

 	return 0;
 }
 EXPORT_SYMBOL_NS_GPL(asoc_acp_i2s_probe, SND_SOC_ACP_COMMON);

 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_ALIAS(DRV_NAME);
	// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
	//
	// This file is provided under a dual BSD/GPLv2 license. When using or
	// redistributing this file, you may do so under either license.
	//
	// Copyright(c) 2021 Advanced Micro Devices, Inc.
	//
	// Authors: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
	//

	/*
	* Generic Hardware interface for ACP Audio I2S controller
	*/

	#include <linux/platform_device.h>
	#include <linux/module.h>
	#include <linux/err.h>
	#include <linux/io.h>
	#include <sound/pcm_params.h>
	#include <sound/soc.h>
	#include <sound/soc-dai.h>
	#include <linux/dma-mapping.h>

	#include "amd.h"

	#define DRV_NAME "acp_i2s_playcap"

	static int acp_i2s_hwparams(struct snd_pcm_substream substream, struct snd_pcm_hw_params params,
	struct snd_soc_dai *dai)
	{
	struct device *dev = dai->component->dev;
	struct acp_dev_data *adata;
	u32 val;
	u32 xfer_resolution;
	u32 reg_val;

	adata = snd_soc_dai_get_drvdata(dai);

	/* These values are as per Hardware Spec */
	switch (params_format(params)) {
	case SNDRV_PCM_FORMAT_U8:
	case SNDRV_PCM_FORMAT_S8:
	xfer_resolution = 0x0;
	break;
	case SNDRV_PCM_FORMAT_S16_LE:
	xfer_resolution = 0x02;
	break;
	case SNDRV_PCM_FORMAT_S24_LE:
	xfer_resolution = 0x04;
	break;
	case SNDRV_PCM_FORMAT_S32_LE:
	xfer_resolution = 0x05;
	break;
	default:
	return -EINVAL;
	}

	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
	switch (dai->driver->id) {
	case I2S_BT_INSTANCE:
	reg_val = ACP_BTTDM_ITER;
	break;
	case I2S_SP_INSTANCE:
	reg_val = ACP_I2STDM_ITER;
	break;
	default:
	dev_err(dev, "Invalid dai id %x\n", dai->driver->id);
	return -EINVAL;
	}
	} else {
	switch (dai->driver->id) {
	case I2S_BT_INSTANCE:
	reg_val = ACP_BTTDM_IRER;
	break;
	case I2S_SP_INSTANCE:
	reg_val = ACP_I2STDM_IRER;
	break;
	default:
	dev_err(dev, "Invalid dai id %x\n", dai->driver->id);
	return -EINVAL;
	}
	}

	val = readl(adata->acp_base + reg_val);
	val &= ~ACP3x_ITER_IRER_SAMP_LEN_MASK;
	val = val \| (xfer_resolution << 3);
	writel(val, adata->acp_base + reg_val);

	return 0;
	}

	static int acp_i2s_trigger(struct snd_pcm_substream substream, int cmd, struct snd_soc_dai dai)
	{
	struct acp_stream *stream = substream->runtime->private_data;
	struct device *dev = dai->component->dev;
	struct acp_dev_data *adata = dev_get_drvdata(dev);
	u32 val, period_bytes, reg_val, ier_val, water_val, buf_size, buf_reg;

	period_bytes = frames_to_bytes(substream->runtime, substream->runtime->period_size);
	buf_size = frames_to_bytes(substream->runtime, substream->runtime->buffer_size);

	switch (cmd) {
	case SNDRV_PCM_TRIGGER_START:
	case SNDRV_PCM_TRIGGER_RESUME:
	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
	stream->bytescount = acp_get_byte_count(adata, stream->dai_id, substream->stream);
	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
	switch (dai->driver->id) {
	case I2S_BT_INSTANCE:
	water_val = ACP_BT_TX_INTR_WATERMARK_SIZE;
	reg_val = ACP_BTTDM_ITER;
	ier_val = ACP_BTTDM_IER;
	buf_reg = ACP_BT_TX_RINGBUFSIZE;
	break;
	case I2S_SP_INSTANCE:
	water_val = ACP_I2S_TX_INTR_WATERMARK_SIZE;
	reg_val = ACP_I2STDM_ITER;
	ier_val = ACP_I2STDM_IER;
	buf_reg = ACP_I2S_TX_RINGBUFSIZE;
	break;
	default:
	dev_err(dev, "Invalid dai id %x\n", dai->driver->id);
	return -EINVAL;
	}
	} else {
	switch (dai->driver->id) {
	case I2S_BT_INSTANCE:
	water_val = ACP_BT_RX_INTR_WATERMARK_SIZE;
	reg_val = ACP_BTTDM_IRER;
	ier_val = ACP_BTTDM_IER;
	buf_reg = ACP_BT_RX_RINGBUFSIZE;
	break;
	case I2S_SP_INSTANCE:
	water_val = ACP_I2S_RX_INTR_WATERMARK_SIZE;
	reg_val = ACP_I2STDM_IRER;
	ier_val = ACP_I2STDM_IER;
	buf_reg = ACP_I2S_RX_RINGBUFSIZE;
	break;
	default:
	dev_err(dev, "Invalid dai id %x\n", dai->driver->id);
	return -EINVAL;
	}
	}
	writel(period_bytes, adata->acp_base + water_val);
	writel(buf_size, adata->acp_base + buf_reg);
	val = readl(adata->acp_base + reg_val);
	val = val \| BIT(0);
	writel(val, adata->acp_base + reg_val);
	writel(1, adata->acp_base + ier_val);
	return 0;
	case SNDRV_PCM_TRIGGER_STOP:
	case SNDRV_PCM_TRIGGER_SUSPEND:
	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
	switch (dai->driver->id) {
	case I2S_BT_INSTANCE:
	reg_val = ACP_BTTDM_ITER;
	break;
	case I2S_SP_INSTANCE:
	reg_val = ACP_I2STDM_ITER;
	break;
	default:
	dev_err(dev, "Invalid dai id %x\n", dai->driver->id);
	return -EINVAL;
	}

	} else {
	switch (dai->driver->id) {
	case I2S_BT_INSTANCE:
	reg_val = ACP_BTTDM_IRER;
	break;
	case I2S_SP_INSTANCE:
	reg_val = ACP_I2STDM_IRER;
	break;
	default:
	dev_err(dev, "Invalid dai id %x\n", dai->driver->id);
	return -EINVAL;
	}
	}
	val = readl(adata->acp_base + reg_val);
	val = val & ~BIT(0);
	writel(val, adata->acp_base + reg_val);

	if (!(readl(adata->acp_base + ACP_BTTDM_ITER) & BIT(0)) &&
	!(readl(adata->acp_base + ACP_BTTDM_IRER) & BIT(0)))
	writel(0, adata->acp_base + ACP_BTTDM_IER);
	if (!(readl(adata->acp_base + ACP_I2STDM_ITER) & BIT(0)) &&
	!(readl(adata->acp_base + ACP_I2STDM_IRER) & BIT(0)))
	writel(0, adata->acp_base + ACP_I2STDM_IER);
	return 0;
	default:
	return -EINVAL;
	}

	return 0;
	}

	static int acp_i2s_prepare(struct snd_pcm_substream substream, struct snd_soc_dai dai)
	{
	struct device *dev = dai->component->dev;
	struct acp_dev_data *adata = dev_get_drvdata(dev);
	struct acp_stream *stream = substream->runtime->private_data;
	u32 reg_dma_size = 0, reg_fifo_size = 0, reg_fifo_addr = 0;
	u32 phy_addr = 0, acp_fifo_addr = 0, ext_int_ctrl;
	unsigned int dir = substream->stream;

	switch (dai->driver->id) {
	case I2S_SP_INSTANCE:
	if (dir == SNDRV_PCM_STREAM_PLAYBACK) {
	reg_dma_size = ACP_I2S_TX_DMA_SIZE;
	acp_fifo_addr = ACP_SRAM_PTE_OFFSET +
	SP_PB_FIFO_ADDR_OFFSET;
	reg_fifo_addr = ACP_I2S_TX_FIFOADDR;
	reg_fifo_size = ACP_I2S_TX_FIFOSIZE;

	phy_addr = I2S_SP_TX_MEM_WINDOW_START + stream->reg_offset;
	writel(phy_addr, adata->acp_base + ACP_I2S_TX_RINGBUFADDR);
	} else {
	reg_dma_size = ACP_I2S_RX_DMA_SIZE;
	acp_fifo_addr = ACP_SRAM_PTE_OFFSET +
	SP_CAPT_FIFO_ADDR_OFFSET;
	reg_fifo_addr = ACP_I2S_RX_FIFOADDR;
	reg_fifo_size = ACP_I2S_RX_FIFOSIZE;
	phy_addr = I2S_SP_RX_MEM_WINDOW_START + stream->reg_offset;
	writel(phy_addr, adata->acp_base + ACP_I2S_RX_RINGBUFADDR);
	}
	break;
	case I2S_BT_INSTANCE:
	if (dir == SNDRV_PCM_STREAM_PLAYBACK) {
	reg_dma_size = ACP_BT_TX_DMA_SIZE;
	acp_fifo_addr = ACP_SRAM_PTE_OFFSET +
	BT_PB_FIFO_ADDR_OFFSET;
	reg_fifo_addr = ACP_BT_TX_FIFOADDR;
	reg_fifo_size = ACP_BT_TX_FIFOSIZE;

	phy_addr = I2S_BT_TX_MEM_WINDOW_START + stream->reg_offset;
	writel(phy_addr, adata->acp_base + ACP_BT_TX_RINGBUFADDR);
	} else {
	reg_dma_size = ACP_BT_RX_DMA_SIZE;
	acp_fifo_addr = ACP_SRAM_PTE_OFFSET +
	BT_CAPT_FIFO_ADDR_OFFSET;
	reg_fifo_addr = ACP_BT_RX_FIFOADDR;
	reg_fifo_size = ACP_BT_RX_FIFOSIZE;

	phy_addr = I2S_BT_TX_MEM_WINDOW_START + stream->reg_offset;
	writel(phy_addr, adata->acp_base + ACP_BT_RX_RINGBUFADDR);
	}
	break;
	default:
	dev_err(dev, "Invalid dai id %x\n", dai->driver->id);
	return -EINVAL;
	}

	writel(DMA_SIZE, adata->acp_base + reg_dma_size);
	writel(acp_fifo_addr, adata->acp_base + reg_fifo_addr);
	writel(FIFO_SIZE, adata->acp_base + reg_fifo_size);

	ext_int_ctrl = readl(adata->acp_base + ACP_EXTERNAL_INTR_CNTL);
	ext_int_ctrl \|= BIT(I2S_RX_THRESHOLD) \| BIT(BT_RX_THRESHOLD)
	\| BIT(I2S_TX_THRESHOLD) \| BIT(BT_TX_THRESHOLD);

	writel(ext_int_ctrl, adata->acp_base + ACP_EXTERNAL_INTR_CNTL);

	return 0;
	}

	static int acp_i2s_startup(struct snd_pcm_substream substream, struct snd_soc_dai dai)
	{
	struct acp_stream *stream = substream->runtime->private_data;
	struct device *dev = dai->component->dev;
	unsigned int dir = substream->stream;
	unsigned int irq_bit = 0;

	switch (dai->driver->id) {
	case I2S_SP_INSTANCE:
	if (dir == SNDRV_PCM_STREAM_PLAYBACK) {
	irq_bit = BIT(I2S_TX_THRESHOLD);
	stream->pte_offset = ACP_SRAM_SP_PB_PTE_OFFSET;
	stream->fifo_offset = SP_PB_FIFO_ADDR_OFFSET;
	} else {
	irq_bit = BIT(I2S_RX_THRESHOLD);
	stream->pte_offset = ACP_SRAM_SP_CP_PTE_OFFSET;
	stream->fifo_offset = SP_CAPT_FIFO_ADDR_OFFSET;
	}
	break;
	case I2S_BT_INSTANCE:
	if (dir == SNDRV_PCM_STREAM_PLAYBACK) {
	irq_bit = BIT(BT_TX_THRESHOLD);
	stream->pte_offset = ACP_SRAM_BT_PB_PTE_OFFSET;
	stream->fifo_offset = BT_PB_FIFO_ADDR_OFFSET;
	} else {
	irq_bit = BIT(BT_RX_THRESHOLD);
	stream->pte_offset = ACP_SRAM_BT_CP_PTE_OFFSET;
	stream->fifo_offset = BT_CAPT_FIFO_ADDR_OFFSET;
	}
	break;
	default:
	dev_err(dev, "Invalid dai id %x\n", dai->driver->id);
	return -EINVAL;
	}

	/* Save runtime dai configuration in stream */
	stream->id = dai->driver->id + dir;
	stream->dai_id = dai->driver->id;
	stream->irq_bit = irq_bit;

	return 0;
	}

	const struct snd_soc_dai_ops asoc_acp_cpu_dai_ops = {
	.startup = acp_i2s_startup,
	.hw_params = acp_i2s_hwparams,
	.prepare = acp_i2s_prepare,
	.trigger = acp_i2s_trigger,
	};
	EXPORT_SYMBOL_NS_GPL(asoc_acp_cpu_dai_ops, SND_SOC_ACP_COMMON);

	int asoc_acp_i2s_probe(struct snd_soc_dai *dai)
	{
	struct device *dev = dai->component->dev;
	struct acp_dev_data *adata = dev_get_drvdata(dev);
	unsigned int val;

	if (!adata->acp_base) {
	dev_err(dev, "I2S base is NULL\n");
	return -EINVAL;
	}

	val = readl(adata->acp_base + ACP_I2S_PIN_CONFIG);
	if (val != I2S_MODE) {
	dev_err(dev, "I2S Mode not supported val %x\n", val);
	return -EINVAL;
	}

	return 0;
	}
	EXPORT_SYMBOL_NS_GPL(asoc_acp_i2s_probe, SND_SOC_ACP_COMMON);

	MODULE_LICENSE("Dual BSD/GPL");
	MODULE_ALIAS(DRV_NAME);