sound/soc/qcom/lpass-cdc-dma.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (c) 2021 The Linux Foundation. All rights reserved.
  *
  * lpass-cdc-dma.c -- ALSA SoC CDC DMA CPU DAI driver for QTi LPASS
  */

 #include <dt-bindings/sound/qcom,lpass.h>
 #include <linux/clk.h>
 #include <linux/module.h>
 #include <linux/export.h>
 #include <sound/soc.h>
 #include <sound/soc-dai.h>

 #include "lpass-lpaif-reg.h"
 #include "lpass.h"

 #define CODEC_MEM_HZ_NORMAL 153600000

 enum codec_dma_interfaces {
 	LPASS_CDC_DMA_INTERFACE1 = 1,
 	LPASS_CDC_DMA_INTERFACE2,
 	LPASS_CDC_DMA_INTERFACE3,
 	LPASS_CDC_DMA_INTERFACE4,
 	LPASS_CDC_DMA_INTERFACE5,
 	LPASS_CDC_DMA_INTERFACE6,
 	LPASS_CDC_DMA_INTERFACE7,
 	LPASS_CDC_DMA_INTERFACE8,
 	LPASS_CDC_DMA_INTERFACE9,
 	LPASS_CDC_DMA_INTERFACE10,
 };

 static void __lpass_get_dmactl_handle(struct snd_pcm_substream *substream, struct snd_soc_dai *dai,
 				      struct lpaif_dmactl **dmactl, int *id)
 {
 	struct snd_soc_pcm_runtime *soc_runtime = snd_soc_substream_to_rtd(substream);
 	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(soc_runtime, 0);
 	struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai);
 	struct snd_pcm_runtime *rt = substream->runtime;
 	struct lpass_pcm_data *pcm_data = rt->private_data;
 	const struct lpass_variant *v = drvdata->variant;
 	unsigned int dai_id = cpu_dai->driver->id;

 	switch (dai_id) {
 	case LPASS_CDC_DMA_RX0 ... LPASS_CDC_DMA_RX9:
 		*dmactl = drvdata->rxtx_rd_dmactl;
 		*id = pcm_data->dma_ch;
 		break;
 	case LPASS_CDC_DMA_TX0 ... LPASS_CDC_DMA_TX8:
 		*dmactl = drvdata->rxtx_wr_dmactl;
 		*id = pcm_data->dma_ch - v->rxtx_wrdma_channel_start;
 		break;
 	case LPASS_CDC_DMA_VA_TX0 ... LPASS_CDC_DMA_VA_TX8:
 		*dmactl = drvdata->va_wr_dmactl;
 		*id = pcm_data->dma_ch - v->va_wrdma_channel_start;
 		break;
 	default:
 		dev_err(soc_runtime->dev, "invalid dai id for dma ctl: %d\n", dai_id);
 		break;
 	}
 }

 static int __lpass_get_codec_dma_intf_type(int dai_id)
 {
 	int ret;

 	switch (dai_id) {
 	case LPASS_CDC_DMA_RX0:
 	case LPASS_CDC_DMA_TX0:
 	case LPASS_CDC_DMA_VA_TX0:
 		ret = LPASS_CDC_DMA_INTERFACE1;
 		break;
 	case LPASS_CDC_DMA_RX1:
 	case LPASS_CDC_DMA_TX1:
 	case LPASS_CDC_DMA_VA_TX1:
 		ret = LPASS_CDC_DMA_INTERFACE2;
 		break;
 	case LPASS_CDC_DMA_RX2:
 	case LPASS_CDC_DMA_TX2:
 	case LPASS_CDC_DMA_VA_TX2:
 		ret = LPASS_CDC_DMA_INTERFACE3;
 		break;
 	case LPASS_CDC_DMA_RX3:
 	case LPASS_CDC_DMA_TX3:
 	case LPASS_CDC_DMA_VA_TX3:
 		ret = LPASS_CDC_DMA_INTERFACE4;
 		break;
 	case LPASS_CDC_DMA_RX4:
 	case LPASS_CDC_DMA_TX4:
 	case LPASS_CDC_DMA_VA_TX4:
 		ret = LPASS_CDC_DMA_INTERFACE5;
 		break;
 	case LPASS_CDC_DMA_RX5:
 	case LPASS_CDC_DMA_TX5:
 	case LPASS_CDC_DMA_VA_TX5:
 		ret = LPASS_CDC_DMA_INTERFACE6;
 		break;
 	case LPASS_CDC_DMA_RX6:
 	case LPASS_CDC_DMA_TX6:
 	case LPASS_CDC_DMA_VA_TX6:
 		ret = LPASS_CDC_DMA_INTERFACE7;
 		break;
 	case LPASS_CDC_DMA_RX7:
 	case LPASS_CDC_DMA_TX7:
 	case LPASS_CDC_DMA_VA_TX7:
 		ret = LPASS_CDC_DMA_INTERFACE8;
 		break;
 	case LPASS_CDC_DMA_RX8:
 	case LPASS_CDC_DMA_TX8:
 	case LPASS_CDC_DMA_VA_TX8:
 		ret = LPASS_CDC_DMA_INTERFACE9;
 		break;
 	case LPASS_CDC_DMA_RX9:
 		ret  = LPASS_CDC_DMA_INTERFACE10;
 		break;
 	default:
 		ret = -EINVAL;
 		break;
 	}
 	return ret;
 }

 static int __lpass_platform_codec_intf_init(struct snd_soc_dai *dai,
 					    struct snd_pcm_substream *substream)
 {
 	struct snd_soc_pcm_runtime *soc_runtime = snd_soc_substream_to_rtd(substream);
 	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(soc_runtime, 0);
 	struct lpaif_dmactl *dmactl = NULL;
 	struct device *dev = soc_runtime->dev;
 	int ret, id, codec_intf;
 	unsigned int dai_id = cpu_dai->driver->id;

 	codec_intf = __lpass_get_codec_dma_intf_type(dai_id);
 	if (codec_intf < 0) {
 		dev_err(dev, "failed to get codec_intf: %d\n", codec_intf);
 		return codec_intf;
 	}

 	__lpass_get_dmactl_handle(substream, dai, &dmactl, &id);
 	if (!dmactl)
 		return -EINVAL;

 	ret = regmap_fields_write(dmactl->codec_intf, id, codec_intf);
 	if (ret) {
 		dev_err(dev, "error writing to dmactl codec_intf reg field: %d\n", ret);
 		return ret;
 	}
 	ret = regmap_fields_write(dmactl->codec_fs_sel, id, 0x0);
 	if (ret) {
 		dev_err(dev, "error writing to dmactl codec_fs_sel reg field: %d\n", ret);
 		return ret;
 	}
 	ret = regmap_fields_write(dmactl->codec_fs_delay, id, 0x0);
 	if (ret) {
 		dev_err(dev, "error writing to dmactl codec_fs_delay reg field: %d\n", ret);
 		return ret;
 	}
 	ret = regmap_fields_write(dmactl->codec_pack, id, 0x1);
 	if (ret) {
 		dev_err(dev, "error writing to dmactl codec_pack reg field: %d\n", ret);
 		return ret;
 	}
 	ret = regmap_fields_write(dmactl->codec_enable, id, LPAIF_DMACTL_ENABLE_ON);
 	if (ret) {
 		dev_err(dev, "error writing to dmactl codec_enable reg field: %d\n", ret);
 		return ret;
 	}
 	return 0;
 }

 static int lpass_cdc_dma_daiops_startup(struct snd_pcm_substream *substream,
 				    struct snd_soc_dai *dai)
 {
 	struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai);
 	struct snd_soc_pcm_runtime *soc_runtime = snd_soc_substream_to_rtd(substream);

 	switch (dai->id) {
 	case LPASS_CDC_DMA_RX0 ... LPASS_CDC_DMA_RX9:
 	case LPASS_CDC_DMA_TX0 ... LPASS_CDC_DMA_TX8:
 		clk_set_rate(drvdata->codec_mem0, CODEC_MEM_HZ_NORMAL);
 		clk_prepare_enable(drvdata->codec_mem0);
 		break;
 	case LPASS_CDC_DMA_VA_TX0 ... LPASS_CDC_DMA_VA_TX0:
 		clk_set_rate(drvdata->va_mem0, CODEC_MEM_HZ_NORMAL);
 		clk_prepare_enable(drvdata->va_mem0);
 		break;
 	default:
 		dev_err(soc_runtime->dev, "%s: invalid  interface: %d\n", __func__, dai->id);
 		break;
 	}
 	return 0;
 }

 static void lpass_cdc_dma_daiops_shutdown(struct snd_pcm_substream *substream,
 				      struct snd_soc_dai *dai)
 {
 	struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai);
 	struct snd_soc_pcm_runtime *soc_runtime = snd_soc_substream_to_rtd(substream);

 	switch (dai->id) {
 	case LPASS_CDC_DMA_RX0 ... LPASS_CDC_DMA_RX9:
 	case LPASS_CDC_DMA_TX0 ... LPASS_CDC_DMA_TX8:
 		clk_disable_unprepare(drvdata->codec_mem0);
 		break;
 	case LPASS_CDC_DMA_VA_TX0 ... LPASS_CDC_DMA_VA_TX0:
 		clk_disable_unprepare(drvdata->va_mem0);
 		break;
 	default:
 		dev_err(soc_runtime->dev, "%s: invalid  interface: %d\n", __func__, dai->id);
 		break;
 	}
 }

 static int lpass_cdc_dma_daiops_hw_params(struct snd_pcm_substream *substream,
 				      struct snd_pcm_hw_params *params,
 				      struct snd_soc_dai *dai)
 {
 	struct snd_soc_pcm_runtime *soc_runtime = snd_soc_substream_to_rtd(substream);
 	struct lpaif_dmactl *dmactl = NULL;
 	unsigned int ret, regval;
 	unsigned int channels = params_channels(params);
 	int id;

 	switch (channels) {
 	case 1:
 		regval = LPASS_CDC_DMA_INTF_ONE_CHANNEL;
 		break;
 	case 2:
 		regval = LPASS_CDC_DMA_INTF_TWO_CHANNEL;
 		break;
 	case 4:
 		regval = LPASS_CDC_DMA_INTF_FOUR_CHANNEL;
 		break;
 	case 6:
 		regval = LPASS_CDC_DMA_INTF_SIX_CHANNEL;
 		break;
 	case 8:
 		regval = LPASS_CDC_DMA_INTF_EIGHT_CHANNEL;
 		break;
 	default:
 		dev_err(soc_runtime->dev, "invalid PCM config\n");
 		return -EINVAL;
 	}

 	__lpass_get_dmactl_handle(substream, dai, &dmactl, &id);
 	if (!dmactl)
 		return -EINVAL;

 	ret = regmap_fields_write(dmactl->codec_channel, id, regval);
 	if (ret) {
 		dev_err(soc_runtime->dev,
 			"error writing to dmactl codec_channel reg field: %d\n", ret);
 		return ret;
 	}
 	return 0;
 }

 static int lpass_cdc_dma_daiops_trigger(struct snd_pcm_substream *substream,
 				    int cmd, struct snd_soc_dai *dai)
 {
 	struct snd_soc_pcm_runtime *soc_runtime = snd_soc_substream_to_rtd(substream);
 	struct lpaif_dmactl *dmactl;
 	int ret = 0, id;

 	switch (cmd) {
 	case SNDRV_PCM_TRIGGER_START:
 	case SNDRV_PCM_TRIGGER_RESUME:
 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 		__lpass_platform_codec_intf_init(dai, substream);
 		break;
 	case SNDRV_PCM_TRIGGER_STOP:
 	case SNDRV_PCM_TRIGGER_SUSPEND:
 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 		__lpass_get_dmactl_handle(substream, dai, &dmactl, &id);
 		if (!dmactl)
 			return -EINVAL;

 		ret = regmap_fields_write(dmactl->codec_enable, id, LPAIF_DMACTL_ENABLE_OFF);
 		if (ret) {
 			dev_err(soc_runtime->dev,
 				"error writing to dmactl codec_enable reg: %d\n", ret);
 			return ret;
 		}
 		break;
 	default:
 		ret = -EINVAL;
 		dev_err(soc_runtime->dev, "%s: invalid %d interface\n", __func__, cmd);
 		break;
 	}
 	return ret;
 }

 const struct snd_soc_dai_ops asoc_qcom_lpass_cdc_dma_dai_ops = {
 	.startup	= lpass_cdc_dma_daiops_startup,
 	.shutdown	= lpass_cdc_dma_daiops_shutdown,
 	.hw_params	= lpass_cdc_dma_daiops_hw_params,
 	.trigger	= lpass_cdc_dma_daiops_trigger,
 };
 EXPORT_SYMBOL_GPL(asoc_qcom_lpass_cdc_dma_dai_ops);

 MODULE_DESCRIPTION("QTi LPASS CDC DMA Driver");
 MODULE_LICENSE("GPL");
	// SPDX-License-Identifier: GPL-2.0-only
	/*
	* Copyright (c) 2021 The Linux Foundation. All rights reserved.
	*
	* lpass-cdc-dma.c -- ALSA SoC CDC DMA CPU DAI driver for QTi LPASS
	*/

	#include <dt-bindings/sound/qcom,lpass.h>
	#include <linux/clk.h>
	#include <linux/module.h>
	#include <linux/export.h>
	#include <sound/soc.h>
	#include <sound/soc-dai.h>

	#include "lpass-lpaif-reg.h"
	#include "lpass.h"

	#define CODEC_MEM_HZ_NORMAL 153600000

	enum codec_dma_interfaces {
	LPASS_CDC_DMA_INTERFACE1 = 1,
	LPASS_CDC_DMA_INTERFACE2,
	LPASS_CDC_DMA_INTERFACE3,
	LPASS_CDC_DMA_INTERFACE4,
	LPASS_CDC_DMA_INTERFACE5,
	LPASS_CDC_DMA_INTERFACE6,
	LPASS_CDC_DMA_INTERFACE7,
	LPASS_CDC_DMA_INTERFACE8,
	LPASS_CDC_DMA_INTERFACE9,
	LPASS_CDC_DMA_INTERFACE10,
	};

	static void __lpass_get_dmactl_handle(struct snd_pcm_substream substream, struct snd_soc_dai dai,
	struct lpaif_dmactl *dmactl, int id)
	{
	struct snd_soc_pcm_runtime *soc_runtime = snd_soc_substream_to_rtd(substream);
	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(soc_runtime, 0);
	struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai);
	struct snd_pcm_runtime *rt = substream->runtime;
	struct lpass_pcm_data *pcm_data = rt->private_data;
	const struct lpass_variant *v = drvdata->variant;
	unsigned int dai_id = cpu_dai->driver->id;

	switch (dai_id) {
	case LPASS_CDC_DMA_RX0 ... LPASS_CDC_DMA_RX9:
	*dmactl = drvdata->rxtx_rd_dmactl;
	*id = pcm_data->dma_ch;
	break;
	case LPASS_CDC_DMA_TX0 ... LPASS_CDC_DMA_TX8:
	*dmactl = drvdata->rxtx_wr_dmactl;
	*id = pcm_data->dma_ch - v->rxtx_wrdma_channel_start;
	break;
	case LPASS_CDC_DMA_VA_TX0 ... LPASS_CDC_DMA_VA_TX8:
	*dmactl = drvdata->va_wr_dmactl;
	*id = pcm_data->dma_ch - v->va_wrdma_channel_start;
	break;
	default:
	dev_err(soc_runtime->dev, "invalid dai id for dma ctl: %d\n", dai_id);
	break;
	}
	}

	static int __lpass_get_codec_dma_intf_type(int dai_id)
	{
	int ret;

	switch (dai_id) {
	case LPASS_CDC_DMA_RX0:
	case LPASS_CDC_DMA_TX0:
	case LPASS_CDC_DMA_VA_TX0:
	ret = LPASS_CDC_DMA_INTERFACE1;
	break;
	case LPASS_CDC_DMA_RX1:
	case LPASS_CDC_DMA_TX1:
	case LPASS_CDC_DMA_VA_TX1:
	ret = LPASS_CDC_DMA_INTERFACE2;
	break;
	case LPASS_CDC_DMA_RX2:
	case LPASS_CDC_DMA_TX2:
	case LPASS_CDC_DMA_VA_TX2:
	ret = LPASS_CDC_DMA_INTERFACE3;
	break;
	case LPASS_CDC_DMA_RX3:
	case LPASS_CDC_DMA_TX3:
	case LPASS_CDC_DMA_VA_TX3:
	ret = LPASS_CDC_DMA_INTERFACE4;
	break;
	case LPASS_CDC_DMA_RX4:
	case LPASS_CDC_DMA_TX4:
	case LPASS_CDC_DMA_VA_TX4:
	ret = LPASS_CDC_DMA_INTERFACE5;
	break;
	case LPASS_CDC_DMA_RX5:
	case LPASS_CDC_DMA_TX5:
	case LPASS_CDC_DMA_VA_TX5:
	ret = LPASS_CDC_DMA_INTERFACE6;
	break;
	case LPASS_CDC_DMA_RX6:
	case LPASS_CDC_DMA_TX6:
	case LPASS_CDC_DMA_VA_TX6:
	ret = LPASS_CDC_DMA_INTERFACE7;
	break;
	case LPASS_CDC_DMA_RX7:
	case LPASS_CDC_DMA_TX7:
	case LPASS_CDC_DMA_VA_TX7:
	ret = LPASS_CDC_DMA_INTERFACE8;
	break;
	case LPASS_CDC_DMA_RX8:
	case LPASS_CDC_DMA_TX8:
	case LPASS_CDC_DMA_VA_TX8:
	ret = LPASS_CDC_DMA_INTERFACE9;
	break;
	case LPASS_CDC_DMA_RX9:
	ret = LPASS_CDC_DMA_INTERFACE10;
	break;
	default:
	ret = -EINVAL;
	break;
	}
	return ret;
	}

	static int __lpass_platform_codec_intf_init(struct snd_soc_dai *dai,
	struct snd_pcm_substream *substream)
	{
	struct snd_soc_pcm_runtime *soc_runtime = snd_soc_substream_to_rtd(substream);
	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(soc_runtime, 0);
	struct lpaif_dmactl *dmactl = NULL;
	struct device *dev = soc_runtime->dev;
	int ret, id, codec_intf;
	unsigned int dai_id = cpu_dai->driver->id;

	codec_intf = __lpass_get_codec_dma_intf_type(dai_id);
	if (codec_intf < 0) {
	dev_err(dev, "failed to get codec_intf: %d\n", codec_intf);
	return codec_intf;
	}

	__lpass_get_dmactl_handle(substream, dai, &dmactl, &id);
	if (!dmactl)
	return -EINVAL;

	ret = regmap_fields_write(dmactl->codec_intf, id, codec_intf);
	if (ret) {
	dev_err(dev, "error writing to dmactl codec_intf reg field: %d\n", ret);
	return ret;
	}
	ret = regmap_fields_write(dmactl->codec_fs_sel, id, 0x0);
	if (ret) {
	dev_err(dev, "error writing to dmactl codec_fs_sel reg field: %d\n", ret);
	return ret;
	}
	ret = regmap_fields_write(dmactl->codec_fs_delay, id, 0x0);
	if (ret) {
	dev_err(dev, "error writing to dmactl codec_fs_delay reg field: %d\n", ret);
	return ret;
	}
	ret = regmap_fields_write(dmactl->codec_pack, id, 0x1);
	if (ret) {
	dev_err(dev, "error writing to dmactl codec_pack reg field: %d\n", ret);
	return ret;
	}
	ret = regmap_fields_write(dmactl->codec_enable, id, LPAIF_DMACTL_ENABLE_ON);
	if (ret) {
	dev_err(dev, "error writing to dmactl codec_enable reg field: %d\n", ret);
	return ret;
	}
	return 0;
	}

	static int lpass_cdc_dma_daiops_startup(struct snd_pcm_substream *substream,
	struct snd_soc_dai *dai)
	{
	struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai);
	struct snd_soc_pcm_runtime *soc_runtime = snd_soc_substream_to_rtd(substream);

	switch (dai->id) {
	case LPASS_CDC_DMA_RX0 ... LPASS_CDC_DMA_RX9:
	case LPASS_CDC_DMA_TX0 ... LPASS_CDC_DMA_TX8:
	clk_set_rate(drvdata->codec_mem0, CODEC_MEM_HZ_NORMAL);
	clk_prepare_enable(drvdata->codec_mem0);
	break;
	case LPASS_CDC_DMA_VA_TX0 ... LPASS_CDC_DMA_VA_TX0:
	clk_set_rate(drvdata->va_mem0, CODEC_MEM_HZ_NORMAL);
	clk_prepare_enable(drvdata->va_mem0);
	break;
	default:
	dev_err(soc_runtime->dev, "%s: invalid interface: %d\n", __func__, dai->id);
	break;
	}
	return 0;
	}

	static void lpass_cdc_dma_daiops_shutdown(struct snd_pcm_substream *substream,
	struct snd_soc_dai *dai)
	{
	struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai);
	struct snd_soc_pcm_runtime *soc_runtime = snd_soc_substream_to_rtd(substream);

	switch (dai->id) {
	case LPASS_CDC_DMA_RX0 ... LPASS_CDC_DMA_RX9:
	case LPASS_CDC_DMA_TX0 ... LPASS_CDC_DMA_TX8:
	clk_disable_unprepare(drvdata->codec_mem0);
	break;
	case LPASS_CDC_DMA_VA_TX0 ... LPASS_CDC_DMA_VA_TX0:
	clk_disable_unprepare(drvdata->va_mem0);
	break;
	default:
	dev_err(soc_runtime->dev, "%s: invalid interface: %d\n", __func__, dai->id);
	break;
	}
	}

	static int lpass_cdc_dma_daiops_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params,
	struct snd_soc_dai *dai)
	{
	struct snd_soc_pcm_runtime *soc_runtime = snd_soc_substream_to_rtd(substream);
	struct lpaif_dmactl *dmactl = NULL;
	unsigned int ret, regval;
	unsigned int channels = params_channels(params);
	int id;

	switch (channels) {
	case 1:
	regval = LPASS_CDC_DMA_INTF_ONE_CHANNEL;
	break;
	case 2:
	regval = LPASS_CDC_DMA_INTF_TWO_CHANNEL;
	break;
	case 4:
	regval = LPASS_CDC_DMA_INTF_FOUR_CHANNEL;
	break;
	case 6:
	regval = LPASS_CDC_DMA_INTF_SIX_CHANNEL;
	break;
	case 8:
	regval = LPASS_CDC_DMA_INTF_EIGHT_CHANNEL;
	break;
	default:
	dev_err(soc_runtime->dev, "invalid PCM config\n");
	return -EINVAL;
	}

	__lpass_get_dmactl_handle(substream, dai, &dmactl, &id);
	if (!dmactl)
	return -EINVAL;

	ret = regmap_fields_write(dmactl->codec_channel, id, regval);
	if (ret) {
	dev_err(soc_runtime->dev,
	"error writing to dmactl codec_channel reg field: %d\n", ret);
	return ret;
	}
	return 0;
	}

	static int lpass_cdc_dma_daiops_trigger(struct snd_pcm_substream *substream,
	int cmd, struct snd_soc_dai *dai)
	{
	struct snd_soc_pcm_runtime *soc_runtime = snd_soc_substream_to_rtd(substream);
	struct lpaif_dmactl *dmactl;
	int ret = 0, id;

	switch (cmd) {
	case SNDRV_PCM_TRIGGER_START:
	case SNDRV_PCM_TRIGGER_RESUME:
	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
	__lpass_platform_codec_intf_init(dai, substream);
	break;
	case SNDRV_PCM_TRIGGER_STOP:
	case SNDRV_PCM_TRIGGER_SUSPEND:
	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
	__lpass_get_dmactl_handle(substream, dai, &dmactl, &id);
	if (!dmactl)
	return -EINVAL;

	ret = regmap_fields_write(dmactl->codec_enable, id, LPAIF_DMACTL_ENABLE_OFF);
	if (ret) {
	dev_err(soc_runtime->dev,
	"error writing to dmactl codec_enable reg: %d\n", ret);
	return ret;
	}
	break;
	default:
	ret = -EINVAL;
	dev_err(soc_runtime->dev, "%s: invalid %d interface\n", __func__, cmd);
	break;
	}
	return ret;
	}

	const struct snd_soc_dai_ops asoc_qcom_lpass_cdc_dma_dai_ops = {
	.startup = lpass_cdc_dma_daiops_startup,
	.shutdown = lpass_cdc_dma_daiops_shutdown,
	.hw_params = lpass_cdc_dma_daiops_hw_params,
	.trigger = lpass_cdc_dma_daiops_trigger,
	};
	EXPORT_SYMBOL_GPL(asoc_qcom_lpass_cdc_dma_dai_ops);

	MODULE_DESCRIPTION("QTi LPASS CDC DMA Driver");
	MODULE_LICENSE("GPL");