sound/soc/qcom/qdsp6/q6apm-lpass-dais.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0
 // Copyright (c) 2021, Linaro Limited

 #include <dt-bindings/sound/qcom,q6dsp-lpass-ports.h>
 #include <linux/err.h>
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/device.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <sound/pcm.h>
 #include <sound/soc.h>
 #include <sound/pcm_params.h>
 #include "q6dsp-lpass-ports.h"
 #include "q6dsp-common.h"
 #include "audioreach.h"
 #include "q6apm.h"

 #define AUDIOREACH_BE_PCM_BASE	16

 struct q6apm_lpass_dai_data {
 	struct q6apm_graph *graph[APM_PORT_MAX];
 	bool is_port_started[APM_PORT_MAX];
 	struct audioreach_module_config module_config[APM_PORT_MAX];
 };

 static int q6dma_set_channel_map(struct snd_soc_dai *dai,
 				 unsigned int tx_num,
 				 const unsigned int *tx_ch_mask,
 				 unsigned int rx_num,
 				 const unsigned int *rx_ch_mask)
 {

 	struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
 	struct audioreach_module_config *cfg = &dai_data->module_config[dai->id];
 	int i;

 	switch (dai->id) {
 	case WSA_CODEC_DMA_TX_0:
 	case WSA_CODEC_DMA_TX_1:
 	case WSA_CODEC_DMA_TX_2:
 	case VA_CODEC_DMA_TX_0:
 	case VA_CODEC_DMA_TX_1:
 	case VA_CODEC_DMA_TX_2:
 	case TX_CODEC_DMA_TX_0:
 	case TX_CODEC_DMA_TX_1:
 	case TX_CODEC_DMA_TX_2:
 	case TX_CODEC_DMA_TX_3:
 	case TX_CODEC_DMA_TX_4:
 	case TX_CODEC_DMA_TX_5:
 		if (!tx_ch_mask) {
 			dev_err(dai->dev, "tx slot not found\n");
 			return -EINVAL;
 		}

 		if (tx_num > AR_PCM_MAX_NUM_CHANNEL) {
 			dev_err(dai->dev, "invalid tx num %d\n",
 				tx_num);
 			return -EINVAL;
 		}
 		for (i = 0; i < tx_num; i++)
 			cfg->channel_map[i] = tx_ch_mask[i];

 		break;
 	case WSA_CODEC_DMA_RX_0:
 	case WSA_CODEC_DMA_RX_1:
 	case RX_CODEC_DMA_RX_0:
 	case RX_CODEC_DMA_RX_1:
 	case RX_CODEC_DMA_RX_2:
 	case RX_CODEC_DMA_RX_3:
 	case RX_CODEC_DMA_RX_4:
 	case RX_CODEC_DMA_RX_5:
 	case RX_CODEC_DMA_RX_6:
 	case RX_CODEC_DMA_RX_7:
 		/* rx */
 		if (!rx_ch_mask) {
 			dev_err(dai->dev, "rx slot not found\n");
 			return -EINVAL;
 		}
 		if (rx_num > APM_PORT_MAX_AUDIO_CHAN_CNT) {
 			dev_err(dai->dev, "invalid rx num %d\n",
 				rx_num);
 			return -EINVAL;
 		}
 		for (i = 0; i < rx_num; i++)
 			cfg->channel_map[i] = rx_ch_mask[i];

 		break;
 	default:
 		dev_err(dai->dev, "%s: invalid dai id 0x%x\n",
 			__func__, dai->id);
 		return -EINVAL;
 	}

 	return 0;
 }

 static int q6hdmi_hw_params(struct snd_pcm_substream *substream,
 			    struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
 {
 	struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
 	struct audioreach_module_config *cfg = &dai_data->module_config[dai->id];
 	int channels = hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max;
 	int ret;

 	cfg->bit_width = params_width(params);
 	cfg->sample_rate = params_rate(params);
 	cfg->num_channels = channels;
 	audioreach_set_default_channel_mapping(cfg->channel_map, channels);

 	switch (dai->id) {
 	case DISPLAY_PORT_RX_0:
 		cfg->dp_idx = 0;
 		break;
 	case DISPLAY_PORT_RX_1 ... DISPLAY_PORT_RX_7:
 		cfg->dp_idx = dai->id - DISPLAY_PORT_RX_1 + 1;
 		break;
 	}

 	ret = q6dsp_get_channel_allocation(channels);
 	if (ret < 0)
 		return ret;

 	cfg->channel_allocation = ret;

 	return 0;
 }

 static int q6dma_hw_params(struct snd_pcm_substream *substream,
 			   struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
 {
 	struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
 	struct audioreach_module_config *cfg = &dai_data->module_config[dai->id];
 	int channels = hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max;

 	cfg->bit_width = params_width(params);
 	cfg->sample_rate = params_rate(params);
 	cfg->num_channels = channels;
 	audioreach_set_default_channel_mapping(cfg->channel_map, channels);

 	return 0;
 }

 static void q6apm_lpass_dai_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
 {
 	struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
 	int rc;

 	if (dai_data->is_port_started[dai->id]) {
 		rc = q6apm_graph_stop(dai_data->graph[dai->id]);
 		dai_data->is_port_started[dai->id] = false;
 		if (rc < 0)
 			dev_err(dai->dev, "fail to close APM port (%d)\n", rc);
 	}

 	if (dai_data->graph[dai->id]) {
 		q6apm_graph_close(dai_data->graph[dai->id]);
 		dai_data->graph[dai->id] = NULL;
 	}
 }

 static int q6apm_lpass_dai_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
 {
 	struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
 	struct audioreach_module_config *cfg = &dai_data->module_config[dai->id];
 	struct q6apm_graph *graph;
 	int graph_id = dai->id;
 	int rc;

 	if (dai_data->is_port_started[dai->id]) {
 		q6apm_graph_stop(dai_data->graph[dai->id]);
 		dai_data->is_port_started[dai->id] = false;

 		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 			q6apm_graph_close(dai_data->graph[dai->id]);
 			dai_data->graph[dai->id] = NULL;
 		}
 	}

 	/**
 	 * It is recommend to load DSP with source graph first and then sink
 	 * graph, so sequence for playback and capture will be different
 	 */
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 		graph = q6apm_graph_open(dai->dev, NULL, dai->dev, graph_id);
 		if (IS_ERR(graph)) {
 			dev_err(dai->dev, "Failed to open graph (%d)\n", graph_id);
 			rc = PTR_ERR(graph);
 			return rc;
 		}
 		dai_data->graph[graph_id] = graph;
 	}

 	cfg->direction = substream->stream;
 	rc = q6apm_graph_media_format_pcm(dai_data->graph[dai->id], cfg);
 	if (rc) {
 		dev_err(dai->dev, "Failed to set media format %d\n", rc);
 		goto err;
 	}

 	rc = q6apm_graph_prepare(dai_data->graph[dai->id]);
 	if (rc) {
 		dev_err(dai->dev, "Failed to prepare Graph %d\n", rc);
 		goto err;
 	}

 	rc = q6apm_graph_start(dai_data->graph[dai->id]);
 	if (rc < 0) {
 		dev_err(dai->dev, "fail to start APM port %x\n", dai->id);
 		goto err;
 	}
 	dai_data->is_port_started[dai->id] = true;

 	return 0;
 err:
 	q6apm_graph_close(dai_data->graph[dai->id]);
 	dai_data->graph[dai->id] = NULL;
 	return rc;
 }

 static int q6apm_lpass_dai_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
 {
 	struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
 	struct q6apm_graph *graph;
 	int graph_id = dai->id;

 	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
 		graph = q6apm_graph_open(dai->dev, NULL, dai->dev, graph_id);
 		if (IS_ERR(graph)) {
 			dev_err(dai->dev, "Failed to open graph (%d)\n", graph_id);
 			return PTR_ERR(graph);
 		}
 		dai_data->graph[graph_id] = graph;
 	}

 	return 0;
 }

 static int q6i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 {
 	struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
 	struct audioreach_module_config *cfg = &dai_data->module_config[dai->id];

 	cfg->fmt = fmt;

 	return 0;
 }

 static const struct snd_soc_dai_ops q6dma_ops = {
 	.prepare	= q6apm_lpass_dai_prepare,
 	.startup	= q6apm_lpass_dai_startup,
 	.shutdown	= q6apm_lpass_dai_shutdown,
 	.set_channel_map  = q6dma_set_channel_map,
 	.hw_params        = q6dma_hw_params,
 };

 static const struct snd_soc_dai_ops q6i2s_ops = {
 	.prepare	= q6apm_lpass_dai_prepare,
 	.startup	= q6apm_lpass_dai_startup,
 	.shutdown	= q6apm_lpass_dai_shutdown,
 	.set_channel_map  = q6dma_set_channel_map,
 	.hw_params        = q6dma_hw_params,
 };

 static const struct snd_soc_dai_ops q6hdmi_ops = {
 	.prepare	= q6apm_lpass_dai_prepare,
 	.startup	= q6apm_lpass_dai_startup,
 	.shutdown	= q6apm_lpass_dai_shutdown,
 	.hw_params	= q6hdmi_hw_params,
 	.set_fmt	= q6i2s_set_fmt,
 };

 static const struct snd_soc_component_driver q6apm_lpass_dai_component = {
 	.name = "q6apm-be-dai-component",
 	.of_xlate_dai_name = q6dsp_audio_ports_of_xlate_dai_name,
 	.be_pcm_base = AUDIOREACH_BE_PCM_BASE,
 	.use_dai_pcm_id = true,
 };

 static int q6apm_lpass_dai_dev_probe(struct platform_device *pdev)
 {
 	struct q6dsp_audio_port_dai_driver_config cfg;
 	struct q6apm_lpass_dai_data *dai_data;
 	struct snd_soc_dai_driver *dais;
 	struct device *dev = &pdev->dev;
 	int num_dais;

 	dai_data = devm_kzalloc(dev, sizeof(*dai_data), GFP_KERNEL);
 	if (!dai_data)
 		return -ENOMEM;

 	dev_set_drvdata(dev, dai_data);

 	memset(&cfg, 0, sizeof(cfg));
 	cfg.q6i2s_ops = &q6i2s_ops;
 	cfg.q6dma_ops = &q6dma_ops;
 	cfg.q6hdmi_ops = &q6hdmi_ops;
 	dais = q6dsp_audio_ports_set_config(dev, &cfg, &num_dais);

 	return devm_snd_soc_register_component(dev, &q6apm_lpass_dai_component, dais, num_dais);
 }

 #ifdef CONFIG_OF
 static const struct of_device_id q6apm_lpass_dai_device_id[] = {
 	{ .compatible = "qcom,q6apm-lpass-dais" },
 	{},
 };
 MODULE_DEVICE_TABLE(of, q6apm_lpass_dai_device_id);
 #endif

 static struct platform_driver q6apm_lpass_dai_platform_driver = {
 	.driver = {
 		.name = "q6apm-lpass-dais",
 		.of_match_table = of_match_ptr(q6apm_lpass_dai_device_id),
 	},
 	.probe = q6apm_lpass_dai_dev_probe,
 };
 module_platform_driver(q6apm_lpass_dai_platform_driver);

 MODULE_DESCRIPTION("AUDIOREACH APM LPASS dai driver");
 MODULE_LICENSE("GPL");
	// SPDX-License-Identifier: GPL-2.0
	// Copyright (c) 2021, Linaro Limited

	#include <dt-bindings/sound/qcom,q6dsp-lpass-ports.h>
	#include <linux/err.h>
	#include <linux/init.h>
	#include <linux/module.h>
	#include <linux/device.h>
	#include <linux/platform_device.h>
	#include <linux/slab.h>
	#include <sound/pcm.h>
	#include <sound/soc.h>
	#include <sound/pcm_params.h>
	#include "q6dsp-lpass-ports.h"
	#include "q6dsp-common.h"
	#include "audioreach.h"
	#include "q6apm.h"

	#define AUDIOREACH_BE_PCM_BASE 16

	struct q6apm_lpass_dai_data {
	struct q6apm_graph *graph[APM_PORT_MAX];
	bool is_port_started[APM_PORT_MAX];
	struct audioreach_module_config module_config[APM_PORT_MAX];
	};

	static int q6dma_set_channel_map(struct snd_soc_dai *dai,
	unsigned int tx_num,
	const unsigned int *tx_ch_mask,
	unsigned int rx_num,
	const unsigned int *rx_ch_mask)
	{

	struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
	struct audioreach_module_config *cfg = &dai_data->module_config[dai->id];
	int i;

	switch (dai->id) {
	case WSA_CODEC_DMA_TX_0:
	case WSA_CODEC_DMA_TX_1:
	case WSA_CODEC_DMA_TX_2:
	case VA_CODEC_DMA_TX_0:
	case VA_CODEC_DMA_TX_1:
	case VA_CODEC_DMA_TX_2:
	case TX_CODEC_DMA_TX_0:
	case TX_CODEC_DMA_TX_1:
	case TX_CODEC_DMA_TX_2:
	case TX_CODEC_DMA_TX_3:
	case TX_CODEC_DMA_TX_4:
	case TX_CODEC_DMA_TX_5:
	if (!tx_ch_mask) {
	dev_err(dai->dev, "tx slot not found\n");
	return -EINVAL;
	}

	if (tx_num > AR_PCM_MAX_NUM_CHANNEL) {
	dev_err(dai->dev, "invalid tx num %d\n",
	tx_num);
	return -EINVAL;
	}
	for (i = 0; i < tx_num; i++)
	cfg->channel_map[i] = tx_ch_mask[i];

	break;
	case WSA_CODEC_DMA_RX_0:
	case WSA_CODEC_DMA_RX_1:
	case RX_CODEC_DMA_RX_0:
	case RX_CODEC_DMA_RX_1:
	case RX_CODEC_DMA_RX_2:
	case RX_CODEC_DMA_RX_3:
	case RX_CODEC_DMA_RX_4:
	case RX_CODEC_DMA_RX_5:
	case RX_CODEC_DMA_RX_6:
	case RX_CODEC_DMA_RX_7:
	/* rx */
	if (!rx_ch_mask) {
	dev_err(dai->dev, "rx slot not found\n");
	return -EINVAL;
	}
	if (rx_num > APM_PORT_MAX_AUDIO_CHAN_CNT) {
	dev_err(dai->dev, "invalid rx num %d\n",
	rx_num);
	return -EINVAL;
	}
	for (i = 0; i < rx_num; i++)
	cfg->channel_map[i] = rx_ch_mask[i];

	break;
	default:
	dev_err(dai->dev, "%s: invalid dai id 0x%x\n",
	__func__, dai->id);
	return -EINVAL;
	}

	return 0;
	}

	static int q6hdmi_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params params, struct snd_soc_dai dai)
	{
	struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
	struct audioreach_module_config *cfg = &dai_data->module_config[dai->id];
	int channels = hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max;
	int ret;

	cfg->bit_width = params_width(params);
	cfg->sample_rate = params_rate(params);
	cfg->num_channels = channels;
	audioreach_set_default_channel_mapping(cfg->channel_map, channels);

	switch (dai->id) {
	case DISPLAY_PORT_RX_0:
	cfg->dp_idx = 0;
	break;
	case DISPLAY_PORT_RX_1 ... DISPLAY_PORT_RX_7:
	cfg->dp_idx = dai->id - DISPLAY_PORT_RX_1 + 1;
	break;
	}

	ret = q6dsp_get_channel_allocation(channels);
	if (ret < 0)
	return ret;

	cfg->channel_allocation = ret;

	return 0;
	}

	static int q6dma_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params params, struct snd_soc_dai dai)
	{
	struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
	struct audioreach_module_config *cfg = &dai_data->module_config[dai->id];
	int channels = hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max;

	cfg->bit_width = params_width(params);
	cfg->sample_rate = params_rate(params);
	cfg->num_channels = channels;
	audioreach_set_default_channel_mapping(cfg->channel_map, channels);

	return 0;
	}

	static void q6apm_lpass_dai_shutdown(struct snd_pcm_substream substream, struct snd_soc_dai dai)
	{
	struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
	int rc;

	if (dai_data->is_port_started[dai->id]) {
	rc = q6apm_graph_stop(dai_data->graph[dai->id]);
	dai_data->is_port_started[dai->id] = false;
	if (rc < 0)
	dev_err(dai->dev, "fail to close APM port (%d)\n", rc);
	}

	if (dai_data->graph[dai->id]) {
	q6apm_graph_close(dai_data->graph[dai->id]);
	dai_data->graph[dai->id] = NULL;
	}
	}

	static int q6apm_lpass_dai_prepare(struct snd_pcm_substream substream, struct snd_soc_dai dai)
	{
	struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
	struct audioreach_module_config *cfg = &dai_data->module_config[dai->id];
	struct q6apm_graph *graph;
	int graph_id = dai->id;
	int rc;

	if (dai_data->is_port_started[dai->id]) {
	q6apm_graph_stop(dai_data->graph[dai->id]);
	dai_data->is_port_started[dai->id] = false;

	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
	q6apm_graph_close(dai_data->graph[dai->id]);
	dai_data->graph[dai->id] = NULL;
	}
	}

	/**
	* It is recommend to load DSP with source graph first and then sink
	* graph, so sequence for playback and capture will be different
	*/
	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
	graph = q6apm_graph_open(dai->dev, NULL, dai->dev, graph_id);
	if (IS_ERR(graph)) {
	dev_err(dai->dev, "Failed to open graph (%d)\n", graph_id);
	rc = PTR_ERR(graph);
	return rc;
	}
	dai_data->graph[graph_id] = graph;
	}

	cfg->direction = substream->stream;
	rc = q6apm_graph_media_format_pcm(dai_data->graph[dai->id], cfg);
	if (rc) {
	dev_err(dai->dev, "Failed to set media format %d\n", rc);
	goto err;
	}

	rc = q6apm_graph_prepare(dai_data->graph[dai->id]);
	if (rc) {
	dev_err(dai->dev, "Failed to prepare Graph %d\n", rc);
	goto err;
	}

	rc = q6apm_graph_start(dai_data->graph[dai->id]);
	if (rc < 0) {
	dev_err(dai->dev, "fail to start APM port %x\n", dai->id);
	goto err;
	}
	dai_data->is_port_started[dai->id] = true;

	return 0;
	err:
	q6apm_graph_close(dai_data->graph[dai->id]);
	dai_data->graph[dai->id] = NULL;
	return rc;
	}

	static int q6apm_lpass_dai_startup(struct snd_pcm_substream substream, struct snd_soc_dai dai)
	{
	struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
	struct q6apm_graph *graph;
	int graph_id = dai->id;

	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
	graph = q6apm_graph_open(dai->dev, NULL, dai->dev, graph_id);
	if (IS_ERR(graph)) {
	dev_err(dai->dev, "Failed to open graph (%d)\n", graph_id);
	return PTR_ERR(graph);
	}
	dai_data->graph[graph_id] = graph;
	}

	return 0;
	}

	static int q6i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
	{
	struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
	struct audioreach_module_config *cfg = &dai_data->module_config[dai->id];

	cfg->fmt = fmt;

	return 0;
	}

	static const struct snd_soc_dai_ops q6dma_ops = {
	.prepare = q6apm_lpass_dai_prepare,
	.startup = q6apm_lpass_dai_startup,
	.shutdown = q6apm_lpass_dai_shutdown,
	.set_channel_map = q6dma_set_channel_map,
	.hw_params = q6dma_hw_params,
	};

	static const struct snd_soc_dai_ops q6i2s_ops = {
	.prepare = q6apm_lpass_dai_prepare,
	.startup = q6apm_lpass_dai_startup,
	.shutdown = q6apm_lpass_dai_shutdown,
	.set_channel_map = q6dma_set_channel_map,
	.hw_params = q6dma_hw_params,
	};

	static const struct snd_soc_dai_ops q6hdmi_ops = {
	.prepare = q6apm_lpass_dai_prepare,
	.startup = q6apm_lpass_dai_startup,
	.shutdown = q6apm_lpass_dai_shutdown,
	.hw_params = q6hdmi_hw_params,
	.set_fmt = q6i2s_set_fmt,
	};

	static const struct snd_soc_component_driver q6apm_lpass_dai_component = {
	.name = "q6apm-be-dai-component",
	.of_xlate_dai_name = q6dsp_audio_ports_of_xlate_dai_name,
	.be_pcm_base = AUDIOREACH_BE_PCM_BASE,
	.use_dai_pcm_id = true,
	};

	static int q6apm_lpass_dai_dev_probe(struct platform_device *pdev)
	{
	struct q6dsp_audio_port_dai_driver_config cfg;
	struct q6apm_lpass_dai_data *dai_data;
	struct snd_soc_dai_driver *dais;
	struct device *dev = &pdev->dev;
	int num_dais;

	dai_data = devm_kzalloc(dev, sizeof(*dai_data), GFP_KERNEL);
	if (!dai_data)
	return -ENOMEM;

	dev_set_drvdata(dev, dai_data);

	memset(&cfg, 0, sizeof(cfg));
	cfg.q6i2s_ops = &q6i2s_ops;
	cfg.q6dma_ops = &q6dma_ops;
	cfg.q6hdmi_ops = &q6hdmi_ops;
	dais = q6dsp_audio_ports_set_config(dev, &cfg, &num_dais);

	return devm_snd_soc_register_component(dev, &q6apm_lpass_dai_component, dais, num_dais);
	}

	#ifdef CONFIG_OF
	static const struct of_device_id q6apm_lpass_dai_device_id[] = {
	{ .compatible = "qcom,q6apm-lpass-dais" },
	{},
	};
	MODULE_DEVICE_TABLE(of, q6apm_lpass_dai_device_id);
	#endif

	static struct platform_driver q6apm_lpass_dai_platform_driver = {
	.driver = {
	.name = "q6apm-lpass-dais",
	.of_match_table = of_match_ptr(q6apm_lpass_dai_device_id),
	},
	.probe = q6apm_lpass_dai_dev_probe,
	};
	module_platform_driver(q6apm_lpass_dai_platform_driver);

	MODULE_DESCRIPTION("AUDIOREACH APM LPASS dai driver");
	MODULE_LICENSE("GPL");