sound/soc/codecs/sdw-mockup.c - SHIFTPHONES/mainline/linux - Gitiles

 // SPDX-License-Identifier: GPL-2.0-only
 //
 // sdw-mockup.c -- a mockup SoundWire codec for tests where only the host
 // drives the bus.
 //
 // Copyright(c) 2021 Intel Corporation
 //
 //

 #include <linux/device.h>
 #include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/soundwire/sdw.h>
 #include <linux/soundwire/sdw_type.h>
 #include <linux/soundwire/sdw_registers.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
 #include <sound/soc.h>

 struct  sdw_mockup_priv {
 	struct sdw_slave *slave;
 };

 struct sdw_stream_data {
 	struct sdw_stream_runtime *sdw_stream;
 };

 static int sdw_mockup_component_probe(struct snd_soc_component *component)
 {
 	return 0;
 }

 static void sdw_mockup_component_remove(struct snd_soc_component *component)
 {
 }

 static const struct snd_soc_component_driver snd_soc_sdw_mockup_component = {
 	.probe = sdw_mockup_component_probe,
 	.remove = sdw_mockup_component_remove,
 };

 static int sdw_mockup_set_sdw_stream(struct snd_soc_dai *dai, void *sdw_stream,
 				     int direction)
 {
 	struct sdw_stream_data *stream;

 	if (!sdw_stream)
 		return 0;

 	stream = kzalloc(sizeof(*stream), GFP_KERNEL);
 	if (!stream)
 		return -ENOMEM;

 	stream->sdw_stream = sdw_stream;

 	/* Use tx_mask or rx_mask to configure stream tag and set dma_data */
 	if (direction == SNDRV_PCM_STREAM_PLAYBACK)
 		dai->playback_dma_data = stream;
 	else
 		dai->capture_dma_data = stream;

 	return 0;
 }

 static void sdw_mockup_shutdown(struct snd_pcm_substream *substream,
 				struct snd_soc_dai *dai)
 {
 	struct sdw_stream_data *stream;

 	stream = snd_soc_dai_get_dma_data(dai, substream);
 	snd_soc_dai_set_dma_data(dai, substream, NULL);
 	kfree(stream);
 }

 static int sdw_mockup_pcm_hw_params(struct snd_pcm_substream *substream,
 				    struct snd_pcm_hw_params *params,
 				    struct snd_soc_dai *dai)
 {
 	struct snd_soc_component *component = dai->component;
 	struct sdw_mockup_priv *sdw_mockup = snd_soc_component_get_drvdata(component);
 	struct sdw_stream_config stream_config;
 	struct sdw_port_config port_config;
 	enum sdw_data_direction direction;
 	struct sdw_stream_data *stream;
 	int num_channels;
 	int port;
 	int ret;

 	stream = snd_soc_dai_get_dma_data(dai, substream);
 	if (!stream)
 		return -EINVAL;

 	if (!sdw_mockup->slave)
 		return -EINVAL;

 	/* SoundWire specific configuration */
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 		direction = SDW_DATA_DIR_RX;
 		port = 1;
 	} else {
 		direction = SDW_DATA_DIR_TX;
 		port = 8;
 	}

 	stream_config.frame_rate = params_rate(params);
 	stream_config.ch_count = params_channels(params);
 	stream_config.bps = snd_pcm_format_width(params_format(params));
 	stream_config.direction = direction;

 	num_channels = params_channels(params);
 	port_config.ch_mask = (1 << num_channels) - 1;
 	port_config.num = port;

 	ret = sdw_stream_add_slave(sdw_mockup->slave, &stream_config,
 				   &port_config, 1, stream->sdw_stream);
 	if (ret)
 		dev_err(dai->dev, "Unable to configure port\n");

 	return ret;
 }

 static int sdw_mockup_pcm_hw_free(struct snd_pcm_substream *substream,
 				  struct snd_soc_dai *dai)
 {
 	struct snd_soc_component *component = dai->component;
 	struct sdw_mockup_priv *sdw_mockup = snd_soc_component_get_drvdata(component);
 	struct sdw_stream_data *stream =
 		snd_soc_dai_get_dma_data(dai, substream);

 	if (!sdw_mockup->slave)
 		return -EINVAL;

 	sdw_stream_remove_slave(sdw_mockup->slave, stream->sdw_stream);
 	return 0;
 }

 static const struct snd_soc_dai_ops sdw_mockup_ops = {
 	.hw_params	= sdw_mockup_pcm_hw_params,
 	.hw_free	= sdw_mockup_pcm_hw_free,
 	.set_stream	= sdw_mockup_set_sdw_stream,
 	.shutdown	= sdw_mockup_shutdown,
 };

 static struct snd_soc_dai_driver sdw_mockup_dai[] = {
 	{
 		.name = "sdw-mockup-aif1",
 		.id = 1,
 		.playback = {
 			.stream_name = "DP1 Playback",
 			.channels_min = 1,
 			.channels_max = 2,
 		},
 		.capture = {
 			.stream_name = "DP8 Capture",
 			.channels_min = 1,
 			.channels_max = 2,
 		},
 		.ops = &sdw_mockup_ops,
 	},
 };

 static int sdw_mockup_update_status(struct sdw_slave *slave,
 				    enum sdw_slave_status status)
 {
 	return 0;
 }

 static int sdw_mockup_read_prop(struct sdw_slave *slave)
 {
 	struct sdw_slave_prop *prop = &slave->prop;
 	int nval;
 	int i, j;
 	u32 bit;
 	unsigned long addr;
 	struct sdw_dpn_prop *dpn;

 	prop->paging_support = false;

 	/*
 	 * first we need to allocate memory for set bits in port lists
 	 * the port allocation is completely arbitrary:
 	 * DP0 is not supported
 	 * DP1 is sink
 	 * DP8 is source
 	 */
 	prop->source_ports = BIT(8);
 	prop->sink_ports = BIT(1);

 	nval = hweight32(prop->source_ports);
 	prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval,
 					  sizeof(*prop->src_dpn_prop),
 					  GFP_KERNEL);
 	if (!prop->src_dpn_prop)
 		return -ENOMEM;

 	i = 0;
 	dpn = prop->src_dpn_prop;
 	addr = prop->source_ports;
 	for_each_set_bit(bit, &addr, 32) {
 		dpn[i].num = bit;
 		dpn[i].type = SDW_DPN_FULL;
 		dpn[i].simple_ch_prep_sm = true;
 		i++;
 	}

 	/* do this again for sink now */
 	nval = hweight32(prop->sink_ports);
 	prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval,
 					   sizeof(*prop->sink_dpn_prop),
 					   GFP_KERNEL);
 	if (!prop->sink_dpn_prop)
 		return -ENOMEM;

 	j = 0;
 	dpn = prop->sink_dpn_prop;
 	addr = prop->sink_ports;
 	for_each_set_bit(bit, &addr, 32) {
 		dpn[j].num = bit;
 		dpn[j].type = SDW_DPN_FULL;
 		dpn[j].simple_ch_prep_sm = true;
 		j++;
 	}

 	prop->simple_clk_stop_capable = true;

 	/* wake-up event */
 	prop->wake_capable = 0;

 	return 0;
 }

 static int sdw_mockup_bus_config(struct sdw_slave *slave,
 				 struct sdw_bus_params *params)
 {
 	return 0;
 }

 static int sdw_mockup_interrupt_callback(struct sdw_slave *slave,
 					 struct sdw_slave_intr_status *status)
 {
 	return 0;
 }

 static const struct sdw_slave_ops sdw_mockup_slave_ops = {
 	.read_prop = sdw_mockup_read_prop,
 	.interrupt_callback = sdw_mockup_interrupt_callback,
 	.update_status = sdw_mockup_update_status,
 	.bus_config = sdw_mockup_bus_config,
 };

 static int sdw_mockup_sdw_probe(struct sdw_slave *slave,
 				const struct sdw_device_id *id)
 {
 	struct device *dev = &slave->dev;
 	struct sdw_mockup_priv *sdw_mockup;
 	int ret;

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

 	dev_set_drvdata(dev, sdw_mockup);
 	sdw_mockup->slave = slave;

 	slave->is_mockup_device = true;

 	ret =  devm_snd_soc_register_component(dev,
 					       &snd_soc_sdw_mockup_component,
 					       sdw_mockup_dai,
 					       ARRAY_SIZE(sdw_mockup_dai));

 	return ret;
 }

 static int sdw_mockup_sdw_remove(struct sdw_slave *slave)
 {
 	return 0;
 }

 /*
  * Intel reserved parts ID with the following mapping expected:
  * 0xAAAA: generic full-duplex codec
  * 0xAA55: headset codec (mock-up of RT711/RT5682) - full-duplex
  * 0x55AA: amplifier (mock-up of RT1308/Maxim 98373) - playback only with
  * IV feedback
  * 0x5555: mic codec (mock-up of RT715) - capture-only
  */
 static const struct sdw_device_id sdw_mockup_id[] = {
 	SDW_SLAVE_ENTRY_EXT(0x0105, 0xAAAA, 0x0, 0, 0),
 	SDW_SLAVE_ENTRY_EXT(0x0105, 0xAA55, 0x0, 0, 0),
 	SDW_SLAVE_ENTRY_EXT(0x0105, 0x55AA, 0x0, 0, 0),
 	SDW_SLAVE_ENTRY_EXT(0x0105, 0x5555, 0x0, 0, 0),
 	{},
 };
 MODULE_DEVICE_TABLE(sdw, sdw_mockup_id);

 static struct sdw_driver sdw_mockup_sdw_driver = {
 	.driver = {
 		.name = "sdw-mockup",
 		.owner = THIS_MODULE,
 	},
 	.probe = sdw_mockup_sdw_probe,
 	.remove = sdw_mockup_sdw_remove,
 	.ops = &sdw_mockup_slave_ops,
 	.id_table = sdw_mockup_id,
 };
 module_sdw_driver(sdw_mockup_sdw_driver);

 MODULE_DESCRIPTION("ASoC SDW mockup codec driver");
 MODULE_AUTHOR("Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>");
 MODULE_LICENSE("GPL");
	// SPDX-License-Identifier: GPL-2.0-only
	//
	// sdw-mockup.c -- a mockup SoundWire codec for tests where only the host
	// drives the bus.
	//
	// Copyright(c) 2021 Intel Corporation
	//
	//

	#include <linux/device.h>
	#include <linux/mod_devicetable.h>
	#include <linux/module.h>
	#include <linux/soundwire/sdw.h>
	#include <linux/soundwire/sdw_type.h>
	#include <linux/soundwire/sdw_registers.h>
	#include <sound/core.h>
	#include <sound/pcm.h>
	#include <sound/pcm_params.h>
	#include <sound/soc.h>

	struct sdw_mockup_priv {
	struct sdw_slave *slave;
	};

	struct sdw_stream_data {
	struct sdw_stream_runtime *sdw_stream;
	};

	static int sdw_mockup_component_probe(struct snd_soc_component *component)
	{
	return 0;
	}

	static void sdw_mockup_component_remove(struct snd_soc_component *component)
	{
	}

	static const struct snd_soc_component_driver snd_soc_sdw_mockup_component = {
	.probe = sdw_mockup_component_probe,
	.remove = sdw_mockup_component_remove,
	};

	static int sdw_mockup_set_sdw_stream(struct snd_soc_dai dai, void sdw_stream,
	int direction)
	{
	struct sdw_stream_data *stream;

	if (!sdw_stream)
	return 0;

	stream = kzalloc(sizeof(*stream), GFP_KERNEL);
	if (!stream)
	return -ENOMEM;

	stream->sdw_stream = sdw_stream;

	/* Use tx_mask or rx_mask to configure stream tag and set dma_data */
	if (direction == SNDRV_PCM_STREAM_PLAYBACK)
	dai->playback_dma_data = stream;
	else
	dai->capture_dma_data = stream;

	return 0;
	}

	static void sdw_mockup_shutdown(struct snd_pcm_substream *substream,
	struct snd_soc_dai *dai)
	{
	struct sdw_stream_data *stream;

	stream = snd_soc_dai_get_dma_data(dai, substream);
	snd_soc_dai_set_dma_data(dai, substream, NULL);
	kfree(stream);
	}

	static int sdw_mockup_pcm_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params,
	struct snd_soc_dai *dai)
	{
	struct snd_soc_component *component = dai->component;
	struct sdw_mockup_priv *sdw_mockup = snd_soc_component_get_drvdata(component);
	struct sdw_stream_config stream_config;
	struct sdw_port_config port_config;
	enum sdw_data_direction direction;
	struct sdw_stream_data *stream;
	int num_channels;
	int port;
	int ret;

	stream = snd_soc_dai_get_dma_data(dai, substream);
	if (!stream)
	return -EINVAL;

	if (!sdw_mockup->slave)
	return -EINVAL;

	/* SoundWire specific configuration */
	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
	direction = SDW_DATA_DIR_RX;
	port = 1;
	} else {
	direction = SDW_DATA_DIR_TX;
	port = 8;
	}

	stream_config.frame_rate = params_rate(params);
	stream_config.ch_count = params_channels(params);
	stream_config.bps = snd_pcm_format_width(params_format(params));
	stream_config.direction = direction;

	num_channels = params_channels(params);
	port_config.ch_mask = (1 << num_channels) - 1;
	port_config.num = port;

	ret = sdw_stream_add_slave(sdw_mockup->slave, &stream_config,
	&port_config, 1, stream->sdw_stream);
	if (ret)
	dev_err(dai->dev, "Unable to configure port\n");

	return ret;
	}

	static int sdw_mockup_pcm_hw_free(struct snd_pcm_substream *substream,
	struct snd_soc_dai *dai)
	{
	struct snd_soc_component *component = dai->component;
	struct sdw_mockup_priv *sdw_mockup = snd_soc_component_get_drvdata(component);
	struct sdw_stream_data *stream =
	snd_soc_dai_get_dma_data(dai, substream);

	if (!sdw_mockup->slave)
	return -EINVAL;

	sdw_stream_remove_slave(sdw_mockup->slave, stream->sdw_stream);
	return 0;
	}

	static const struct snd_soc_dai_ops sdw_mockup_ops = {
	.hw_params = sdw_mockup_pcm_hw_params,
	.hw_free = sdw_mockup_pcm_hw_free,
	.set_stream = sdw_mockup_set_sdw_stream,
	.shutdown = sdw_mockup_shutdown,
	};

	static struct snd_soc_dai_driver sdw_mockup_dai[] = {
	{
	.name = "sdw-mockup-aif1",
	.id = 1,
	.playback = {
	.stream_name = "DP1 Playback",
	.channels_min = 1,
	.channels_max = 2,
	},
	.capture = {
	.stream_name = "DP8 Capture",
	.channels_min = 1,
	.channels_max = 2,
	},
	.ops = &sdw_mockup_ops,
	},
	};

	static int sdw_mockup_update_status(struct sdw_slave *slave,
	enum sdw_slave_status status)
	{
	return 0;
	}

	static int sdw_mockup_read_prop(struct sdw_slave *slave)
	{
	struct sdw_slave_prop *prop = &slave->prop;
	int nval;
	int i, j;
	u32 bit;
	unsigned long addr;
	struct sdw_dpn_prop *dpn;

	prop->paging_support = false;

	/*
	* first we need to allocate memory for set bits in port lists
	* the port allocation is completely arbitrary:
	* DP0 is not supported
	* DP1 is sink
	* DP8 is source
	*/
	prop->source_ports = BIT(8);
	prop->sink_ports = BIT(1);

	nval = hweight32(prop->source_ports);
	prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval,
	sizeof(*prop->src_dpn_prop),
	GFP_KERNEL);
	if (!prop->src_dpn_prop)
	return -ENOMEM;

	i = 0;
	dpn = prop->src_dpn_prop;
	addr = prop->source_ports;
	for_each_set_bit(bit, &addr, 32) {
	dpn[i].num = bit;
	dpn[i].type = SDW_DPN_FULL;
	dpn[i].simple_ch_prep_sm = true;
	i++;
	}

	/* do this again for sink now */
	nval = hweight32(prop->sink_ports);
	prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval,
	sizeof(*prop->sink_dpn_prop),
	GFP_KERNEL);
	if (!prop->sink_dpn_prop)
	return -ENOMEM;

	j = 0;
	dpn = prop->sink_dpn_prop;
	addr = prop->sink_ports;
	for_each_set_bit(bit, &addr, 32) {
	dpn[j].num = bit;
	dpn[j].type = SDW_DPN_FULL;
	dpn[j].simple_ch_prep_sm = true;
	j++;
	}

	prop->simple_clk_stop_capable = true;

	/* wake-up event */
	prop->wake_capable = 0;

	return 0;
	}

	static int sdw_mockup_bus_config(struct sdw_slave *slave,
	struct sdw_bus_params *params)
	{
	return 0;
	}

	static int sdw_mockup_interrupt_callback(struct sdw_slave *slave,
	struct sdw_slave_intr_status *status)
	{
	return 0;
	}

	static const struct sdw_slave_ops sdw_mockup_slave_ops = {
	.read_prop = sdw_mockup_read_prop,
	.interrupt_callback = sdw_mockup_interrupt_callback,
	.update_status = sdw_mockup_update_status,
	.bus_config = sdw_mockup_bus_config,
	};

	static int sdw_mockup_sdw_probe(struct sdw_slave *slave,
	const struct sdw_device_id *id)
	{
	struct device *dev = &slave->dev;
	struct sdw_mockup_priv *sdw_mockup;
	int ret;

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

	dev_set_drvdata(dev, sdw_mockup);
	sdw_mockup->slave = slave;

	slave->is_mockup_device = true;

	ret = devm_snd_soc_register_component(dev,
	&snd_soc_sdw_mockup_component,
	sdw_mockup_dai,
	ARRAY_SIZE(sdw_mockup_dai));

	return ret;
	}

	static int sdw_mockup_sdw_remove(struct sdw_slave *slave)
	{
	return 0;
	}

	/*
	* Intel reserved parts ID with the following mapping expected:
	* 0xAAAA: generic full-duplex codec
	* 0xAA55: headset codec (mock-up of RT711/RT5682) - full-duplex
	* 0x55AA: amplifier (mock-up of RT1308/Maxim 98373) - playback only with
	* IV feedback
	* 0x5555: mic codec (mock-up of RT715) - capture-only
	*/
	static const struct sdw_device_id sdw_mockup_id[] = {
	SDW_SLAVE_ENTRY_EXT(0x0105, 0xAAAA, 0x0, 0, 0),
	SDW_SLAVE_ENTRY_EXT(0x0105, 0xAA55, 0x0, 0, 0),
	SDW_SLAVE_ENTRY_EXT(0x0105, 0x55AA, 0x0, 0, 0),
	SDW_SLAVE_ENTRY_EXT(0x0105, 0x5555, 0x0, 0, 0),
	{},
	};
	MODULE_DEVICE_TABLE(sdw, sdw_mockup_id);

	static struct sdw_driver sdw_mockup_sdw_driver = {
	.driver = {
	.name = "sdw-mockup",
	.owner = THIS_MODULE,
	},
	.probe = sdw_mockup_sdw_probe,
	.remove = sdw_mockup_sdw_remove,
	.ops = &sdw_mockup_slave_ops,
	.id_table = sdw_mockup_id,
	};
	module_sdw_driver(sdw_mockup_sdw_driver);

	MODULE_DESCRIPTION("ASoC SDW mockup codec driver");
	MODULE_AUTHOR("Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>");
	MODULE_LICENSE("GPL");