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Commit daef0885 authored by Karthikeyan Mani's avatar Karthikeyan Mani Committed by Sudheer Papothi
Browse files

asoc: codecs: Add swr dmic codec 



Add initial changes for supporting swr dmic
where each codec can support single mic recording
over soundwire port.

Change-Id: I0319bfb5c850d48b563f46d5dd77f21d4a83f029
Signed-off-by: default avatarKarthikeyan Mani <kmani@codeaurora.org>
parent f6b14a75

asoc/codecs/Kbuild

+7 −0
Original line number Diff line number Diff line
@@ -143,6 +143,10 @@ ifdef CONFIG_SND_SOC_WSA881X 
	WSA881X_OBJS += wsa881x-temp-sensor.o

endif



ifdef CONFIG_SND_SOC_SWR_DMIC

       SWR_DMIC_OBJS += swr-dmic.o

endif



ifdef CONFIG_SND_SOC_WSA881X_ANALOG

	WSA881X_ANALOG_OBJS += wsa881x-analog.o

	WSA881X_ANALOG_OBJS += wsa881x-tables-analog.o
@@ -242,6 +246,9 @@ wcd9335_dlkm-y := $(WCD9335_OBJS) 
obj-$(CONFIG_SND_SOC_WSA881X) += wsa881x_dlkm.o

wsa881x_dlkm-y := $(WSA881X_OBJS)



obj-$(CONFIG_SND_SOC_SWR_DMIC) += swr_dmic_dlkm.o

swr_dmic_dlkm-y := $(SWR_DMIC_OBJS)



obj-$(CONFIG_SND_SOC_WSA881X_ANALOG) += wsa881x_analog_dlkm.o

wsa881x_analog_dlkm-y := $(WSA881X_ANALOG_OBJS)

asoc/codecs/swr-dmic.c

0 → 100644
+718 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2019-2020, The Linux Foundation. All rights reserved.

 */



#include <linux/module.h>

#include <linux/init.h>

#include <linux/slab.h>

#include <linux/platform_device.h>

#include <linux/device.h>

#include <linux/printk.h>

#include <linux/bitops.h>

#include <linux/regulator/consumer.h>

#include <linux/pm_runtime.h>

#include <linux/delay.h>

#include <linux/kernel.h>

#include <linux/gpio.h>

#include <linux/of_gpio.h>

#include <linux/of_platform.h>

#include <linux/debugfs.h>

#include <soc/soundwire.h>

#include <sound/pcm.h>

#include <sound/pcm_params.h>

#include <sound/soc.h>

#include <sound/soc-dapm.h>

#include <sound/tlv.h>

#include <asoc/msm-cdc-pinctrl.h>

#include <dt-bindings/sound/audio-codec-port-types.h>

#include "swr-dmic.h"



#define itoa(x)               ('0' + x)

#define DAI_NAME_NUM_INDEX    11

#define AIF_NAME_NUM_INDEX    12

#define DEFAULT_CODEC_NAME    "swr_dmic_tx0"

#define DEFAULT_AIF_NAME      "SWR_DMIC_AIF0 Playback"



/*

 * Private data Structure for swr-dmic. All parameters related to

 * external mic codec needs to be defined here.

 */

struct swr_dmic_priv {

	struct device *dev;

	struct swr_device *swr_slave;

	struct snd_soc_component *component;

	struct snd_soc_component_driver *driver;

	struct snd_soc_dai_driver *dai_driver;

	struct device_node *swr_dmic_vdd_np;

	int tx_mode;

	u8 tx_master_port_map[SWR_DMIC_MAX_PORTS];

};



const char *codec_name_list[] = {

	"swr-dmic-01",

	"swr-dmic-02",

	"swr-dmic-03",

	"swr-dmic-04",

	"swr-dmic-05",

};



static int get_master_port(int val)

{

	int master_port = 0;



	switch(val) {

	case 0:

		master_port = SWRM_TX1_CH1;

		break;

	case 1:

		master_port = SWRM_TX1_CH2;

		break;

	case 2:

		master_port = SWRM_TX1_CH3;

		break;

	case 3:

		master_port = SWRM_TX1_CH4;

		break;

	case 4:

		master_port = SWRM_TX2_CH1;

		break;

	case 5:

		master_port = SWRM_TX2_CH2;

		break;

	case 6:

		master_port = SWRM_TX2_CH3;

		break;

	case 7:

		master_port = SWRM_TX2_CH4;

		break;

	case 8:

		master_port = SWRM_TX3_CH1;

		break;

	case 9:

		master_port = SWRM_TX3_CH2;

		break;

	case 10:

		master_port = SWRM_TX3_CH3;

		break;

	case 11:

		master_port = SWRM_TX3_CH4;

		break;

	case 12:

		master_port = SWRM_PCM_IN;

		break;

	default:

		master_port = SWRM_TX1_CH1;

		pr_debug("%s: undefined value, fall back to default master_port: %d\n",

			 __func__, master_port);

		break;

	}



	pr_debug("%s: master_port: %d\n", __func__, master_port);

	return master_port;

}



static int get_master_port_val(int master_port)

{

	int val = 0;



	switch (master_port) {

	case SWRM_TX1_CH1:

		val = 0;

		break;

	case SWRM_TX1_CH2:

		val = 1;

		break;

	case SWRM_TX1_CH3:

		val = 2;

		break;

	case SWRM_TX1_CH4:

		val = 3;

		break;

	case SWRM_TX2_CH1:

		val = 4;

		break;

	case SWRM_TX2_CH2:

		val = 5;

		break;

	case SWRM_TX2_CH3:

		val = 6;

		break;

	case SWRM_TX2_CH4:

		val = 7;

		break;

	case SWRM_TX3_CH1:

		val = 8;

		break;

	case SWRM_TX3_CH2:

		val = 9;

		break;

	case SWRM_TX3_CH3:

		val = 10;

		break;

	case SWRM_TX3_CH4:

		val = 11;

		break;

	case SWRM_PCM_IN:

		val = 12;

		break;

	default:

		val = 0;

		pr_debug("%s: undefined master_port:%d, fallback to default val: %d\n",

			 __func__, master_port, val);

		break;

	}



	pr_debug("%s: master_port:%d val: %d\n", __func__, master_port, val);

	return val;

}



static inline int swr_dmic_tx_get_slave_port_type_idx(const char *wname,

				      unsigned int *port_idx)

{

	u8 port_type;



	if (strnstr(wname, "HIFI", sizeof("HIFI")))

		port_type = SWR_DMIC_HIFI_PORT;

	else if (strnstr(wname, "LP", sizeof("LP")))

		port_type = SWR_DMIC_LP_PORT;

	else

		return -EINVAL;



	*port_idx = port_type;

	return 0;

}



static int swr_dmic_tx_master_port_get(struct snd_kcontrol *kcontrol,

					struct snd_ctl_elem_value *ucontrol)

{

	struct snd_soc_component *component =

				snd_soc_kcontrol_component(kcontrol);

	struct swr_dmic_priv *swr_dmic = snd_soc_component_get_drvdata(component);

	int ret = 0;

	int slave_port_idx;



	ret = swr_dmic_tx_get_slave_port_type_idx(kcontrol->id.name,

							&slave_port_idx);

	if (ret) {

		dev_dbg(component->dev, "%s: invalid port string\n", __func__);

		return ret;

	}



	if (slave_port_idx >= 0 &&

		slave_port_idx < SWR_DMIC_MAX_PORTS)

		ucontrol->value.integer.value[0] = get_master_port_val(

				swr_dmic->tx_master_port_map[slave_port_idx]);



	dev_dbg(component->dev, "%s: ucontrol->value.integer.value[0] = %ld\n",

			__func__, ucontrol->value.integer.value[0]);

	return 0;

}



static int swr_dmic_tx_master_port_put(struct snd_kcontrol *kcontrol,

					struct snd_ctl_elem_value *ucontrol)

{

	struct snd_soc_component *component =

				snd_soc_kcontrol_component(kcontrol);

	struct swr_dmic_priv *swr_dmic = snd_soc_component_get_drvdata(component);

	int ret = 0;

	int slave_port_idx;



	ret  = swr_dmic_tx_get_slave_port_type_idx(kcontrol->id.name,

							&slave_port_idx);

	if (ret) {

		dev_dbg(component->dev, "%s: invalid port string\n", __func__);

		return ret;

	}





	dev_dbg(component->dev, "%s: slave_port_idx: %d",

			__func__, slave_port_idx);

	dev_dbg(component->dev, "%s: ucontrol->value.enumerated.item[0] = %ld\n",

			__func__, ucontrol->value.enumerated.item[0]);

	if (slave_port_idx >= 0 &&

		slave_port_idx < SWR_DMIC_MAX_PORTS)

		swr_dmic->tx_master_port_map[slave_port_idx] =

				get_master_port(

					ucontrol->value.enumerated.item[0]);



	return 0;

}



static int swr_dmic_vdd_ctrl(struct swr_dmic_priv *swr_dmic, bool enable)

{

	int ret = 0;



	if (swr_dmic->swr_dmic_vdd_np) {

		if (enable)

			ret = msm_cdc_pinctrl_select_active_state(

							swr_dmic->swr_dmic_vdd_np);

		else

			ret = msm_cdc_pinctrl_select_sleep_state(

							swr_dmic->swr_dmic_vdd_np);

		if (ret != 0)

			dev_err(swr_dmic->dev, "%s: Failed to turn state %d; ret=%d\n",

				__func__, enable, ret);

	} else {

		dev_err(swr_dmic->dev, "%s: invalid pinctrl node\n", __func__);

		ret = -EINVAL;

	}



	return ret;

}



static int dmic_swr_ctrl(struct snd_soc_dapm_widget *w,

			 struct snd_kcontrol *kcontrol, int event)

{

	int ret = 0;

	struct snd_soc_component *component =

			snd_soc_dapm_to_component(w->dapm);

	struct swr_dmic_priv *swr_dmic =

			snd_soc_component_get_drvdata(component);



	u8 num_ch = 1;

	u8 ch_mask = 0x01; // only DpnChannelEN1 register is available

	u8 port_type = 0;

	u32 ch_rate = 0;

	u8 num_port = 1;

	/*

	 * Port 1 is high quality / 2.4 or 3.072 Mbps

	 * Port 2 is listen low power / 0.6 or 0.768 Mbps

	 */

	u8 port_id = swr_dmic->tx_mode;

	port_type = swr_dmic->tx_master_port_map[port_id];



	switch (event) {

	case SND_SOC_DAPM_PRE_PMU:

		ret = swr_connect_port(swr_dmic->swr_slave, &port_id, num_port,

			&ch_mask, &ch_rate, &num_ch, &port_type);

		break;

	case SND_SOC_DAPM_POST_PMU:

		ret = swr_slvdev_datapath_control(swr_dmic->swr_slave,

			swr_dmic->swr_slave->dev_num, true);

		break;

	case SND_SOC_DAPM_PRE_PMD:

		ret = swr_slvdev_datapath_control(swr_dmic->swr_slave,

			swr_dmic->swr_slave->dev_num, false);

		break;

	case SND_SOC_DAPM_POST_PMD:

		ret = swr_disconnect_port(swr_dmic->swr_slave, &port_id,

					  num_port, &ch_mask, &port_type);

		break;

	};



	return ret;

}



static const char * const tx_mode_text_swr_mic[] = {

	"MIC_HIFI", "MIC_LP",

};



static int swr_mic_tx_mode_put(struct snd_kcontrol *kcontrol,

			       struct snd_ctl_elem_value *ucontrol)

{

	struct snd_soc_component *component =

			snd_soc_kcontrol_component(kcontrol);

	struct swr_dmic_priv *swr_dmic =

			snd_soc_component_get_drvdata(component);



	dev_dbg(component->dev, "%s: tx_mode  = %ld\n",

		__func__, ucontrol->value.integer.value[0]);



	swr_dmic->tx_mode =  ucontrol->value.integer.value[0];



	return 0;

}



static int swr_mic_tx_mode_get(struct snd_kcontrol *kcontrol,

			       struct snd_ctl_elem_value *ucontrol)

{

	struct snd_soc_component *component =

			snd_soc_kcontrol_component(kcontrol);

	struct swr_dmic_priv *swr_dmic =

			snd_soc_component_get_drvdata(component);



	ucontrol->value.integer.value[0] = swr_dmic->tx_mode;



	dev_dbg(component->dev, "%s: tx_mode = 0x%x\n", __func__,

			swr_dmic->tx_mode);



	return 0;

}



static const struct soc_enum tx_mode_enum_swr_mic =

	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(tx_mode_text_swr_mic),

			    tx_mode_text_swr_mic);



static const char * const tx_master_port_text[] = {

	"SWRM_TX1_CH1", "SWRM_TX1_CH2", "SWRM_TX1_CH3", "SWRM_TX1_CH4",

	"SWRM_TX2_CH1", "SWRM_TX2_CH2", "SWRM_TX2_CH3", "SWRM_TX2_CH4",

	"SWRM_TX3_CH1", "SWRM_TX3_CH2", "SWRM_TX3_CH3", "SWRM_TX3_CH4",

	"SWRM_PCM_IN",

};



static const struct soc_enum tx_master_port_enum =

	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(tx_master_port_text),

				tx_master_port_text);



static const struct snd_kcontrol_new swr_dmic_snd_controls[] = {

	SOC_ENUM_EXT("TX MODE", tx_mode_enum_swr_mic,

			swr_mic_tx_mode_get, swr_mic_tx_mode_put),



	SOC_ENUM_EXT("HIFI PortMap", tx_master_port_enum,

		swr_dmic_tx_master_port_get, swr_dmic_tx_master_port_put),

	SOC_ENUM_EXT("LP PortMap", tx_master_port_enum,

		swr_dmic_tx_master_port_get, swr_dmic_tx_master_port_put),

};



static const struct snd_kcontrol_new dmic_switch[] = {

	SOC_DAPM_SINGLE("Switch", SND_SOC_NOPM, 0, 1, 0)

};



static const struct snd_soc_dapm_widget swr_dmic_dapm_widgets[] = {

	SND_SOC_DAPM_MIXER_E("DMIC_SWR_MIXER", SND_SOC_NOPM, 0, 0,

			dmic_switch, ARRAY_SIZE(dmic_switch), dmic_swr_ctrl,

			SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |

			SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD),



	SND_SOC_DAPM_INPUT("SWR_DMIC"),



	SND_SOC_DAPM_OUTPUT("SWR_DMIC_OUTPUT"),

};



static const struct snd_soc_dapm_route swr_dmic_audio_map[] = {

	{"SWR_DMIC_MIXER", "Switch", "SWR_DMIC"},

	{"SWR_DMIC_OUTPUT", NULL, "SWR_DMIC_MIXER"},

};



static int swr_dmic_codec_probe(struct snd_soc_component *component)

{

	struct swr_dmic_priv *swr_dmic =

			snd_soc_component_get_drvdata(component);



	if (!swr_dmic)

		return -EINVAL;



	swr_dmic->component = component;

	return 0;

}



static void swr_dmic_codec_remove(struct snd_soc_component *component)

{

	struct swr_dmic_priv *swr_dmic =

			snd_soc_component_get_drvdata(component);



	swr_dmic->component = NULL;

	return;

}



static const struct snd_soc_component_driver soc_codec_dev_swr_dmic = {

	.name = NULL,

	.probe = swr_dmic_codec_probe,

	.remove = swr_dmic_codec_remove,

	.controls = swr_dmic_snd_controls,

	.num_controls = ARRAY_SIZE(swr_dmic_snd_controls),

	.dapm_widgets = swr_dmic_dapm_widgets,

	.num_dapm_widgets = ARRAY_SIZE(swr_dmic_dapm_widgets),

	.dapm_routes = swr_dmic_audio_map,

	.num_dapm_routes = ARRAY_SIZE(swr_dmic_audio_map),

};



static struct snd_soc_dai_ops wsa_dai_ops = {

};



static struct snd_soc_dai_driver swr_dmic_dai[] = {

	{

		.name = "",

		.id = 0,

		.playback = {

			.stream_name = "",

			.rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |

				SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000 |

				SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000),

			.formats = (SNDRV_PCM_FMTBIT_S16_LE |

				SNDRV_PCM_FMTBIT_S24_LE |

				SNDRV_PCM_FMTBIT_S32_LE),

			.rate_max = 192000,

			.rate_min = 8000,

			.channels_min = 1,

			.channels_max = 2,

		},

		.ops = &wsa_dai_ops,

	},

};



static int swr_dmic_probe(struct swr_device *pdev)

{

	int ret = 0;

	struct swr_dmic_priv *swr_dmic;

	int i = 0;

	u8 devnum = 0;

	const char *swr_dmic_name_prefix_of = NULL;

	const char *swr_dmic_codec_name_of = NULL;

	struct snd_soc_component *component;

	char *dai_name;

	char *aif_name;



	swr_dmic = devm_kzalloc(&pdev->dev, sizeof(struct swr_dmic_priv),

			    GFP_KERNEL);

	if (!swr_dmic)

		return -ENOMEM;

	swr_dmic->swr_dmic_vdd_np = of_parse_phandle(pdev->dev.of_node,

					     "qcom,swr-dmic-vdd-node", 0);

	if (!swr_dmic->swr_dmic_vdd_np) {

		ret = -EINVAL;

		dev_dbg(&pdev->dev, "%s: Not using pinctrl\n", __func__);

	}

	swr_set_dev_data(pdev, swr_dmic);



	swr_dmic->swr_slave = pdev;



	ret = of_property_read_string(pdev->dev.of_node, "qcom,swr-dmic-prefix",

				&swr_dmic_name_prefix_of);

	if (ret) {

		dev_dbg(&pdev->dev, "%s: Looking up %s property in node %s failed\n",

		__func__, "qcom,swr-dmic-prefix",

		pdev->dev.of_node->full_name);

		goto err;

	}



	ret = of_property_read_string(pdev->dev.of_node, "qcom,codec-name",

				&swr_dmic_codec_name_of);

	if (ret) {

		dev_dbg(&pdev->dev, "%s: Looking up %s property in node %s failed\n",

		__func__, "qcom,codec-name",

		pdev->dev.of_node->full_name);

		goto err;

	}



	swr_dmic_vdd_ctrl(swr_dmic, true);

	/*

	 * Add 5msec delay to provide sufficient time for

	 * soundwire auto enumeration of slave devices as

	 * as per HW requirement.

	 */

	usleep_range(5000, 5010);

	ret = swr_get_logical_dev_num(pdev, pdev->addr, &devnum);

	if (ret) {

		dev_dbg(&pdev->dev,

			"%s get devnum %d for dev addr %lx failed\n",

			__func__, devnum, pdev->addr);

		goto dev_err;

	}

	pdev->dev_num = devnum;



	swr_dmic->driver = devm_kzalloc(&pdev->dev,

			sizeof(struct snd_soc_component_driver), GFP_KERNEL);

	if (!swr_dmic->driver) {

		ret = -ENOMEM;

		goto dev_err;

	}



	memcpy(swr_dmic->driver, &soc_codec_dev_swr_dmic,

			sizeof(struct snd_soc_component_driver));

	swr_dmic->driver->name = devm_kzalloc(&pdev->dev,

			strlen(swr_dmic_codec_name_of), GFP_KERNEL);

	if (!swr_dmic->driver->name) {

		ret = -ENOMEM;

		goto dev_err;

	}



	for (i = 0; i < ARRAY_SIZE(codec_name_list); i++) {

		if (!strcmp(swr_dmic_codec_name_of, codec_name_list[i]))

			break;

	}

	if (i == ARRAY_SIZE(codec_name_list))

		goto dev_err;



	swr_dmic->dai_driver = devm_kzalloc(&pdev->dev,

			sizeof(struct snd_soc_dai_driver), GFP_KERNEL);

	if (!swr_dmic->dai_driver) {

		ret = -ENOMEM;

		goto dev_err;

	}



	memcpy(swr_dmic->dai_driver, swr_dmic_dai,

			sizeof(struct snd_soc_dai_driver));

	dai_name = devm_kzalloc(&pdev->dev, strlen(DEFAULT_CODEC_NAME),

			GFP_KERNEL);

	if (!dai_name) {

		ret = -ENOMEM;

		goto dev_err;

	}



	memcpy(dai_name, DEFAULT_CODEC_NAME, strlen(DEFAULT_CODEC_NAME));

	dai_name[DAI_NAME_NUM_INDEX] = itoa(i);

	swr_dmic->dai_driver->name = dai_name;

	swr_dmic->dai_driver->id = i;

	aif_name = devm_kzalloc(&pdev->dev, strlen(DEFAULT_AIF_NAME),

			GFP_KERNEL);

	if (!aif_name) {

		ret = -ENOMEM;

		goto dev_err;

	}



	memcpy(aif_name, DEFAULT_AIF_NAME, strlen(DEFAULT_AIF_NAME));

	aif_name[AIF_NAME_NUM_INDEX] = itoa(i);

	swr_dmic->dai_driver->playback.stream_name = aif_name;



	ret = snd_soc_register_component(&pdev->dev, swr_dmic->driver,

				swr_dmic->dai_driver, 1);

	if (ret) {

		dev_err(&pdev->dev, "%s: Codec registration failed\n",

			__func__);

		goto dev_err;

	}



	component = snd_soc_lookup_component(&pdev->dev,

						swr_dmic->driver->name);

	swr_dmic->component = component;

	component->name_prefix = devm_kzalloc(&pdev->dev,

					strlen(swr_dmic_name_prefix_of),

	   GFP_KERNEL);

	if (!component->name_prefix) {

		ret = -ENOMEM;

		goto dev_err;

	}



	return 0;



dev_err:

	swr_dmic_vdd_ctrl(swr_dmic, false);

	swr_remove_device(pdev);

err:

	return ret;

}



static int swr_dmic_remove(struct swr_device *pdev)

{

	struct swr_dmic_priv *swr_dmic;



	swr_dmic = swr_get_dev_data(pdev);

	if (!swr_dmic) {

		dev_err(&pdev->dev, "%s: swr_dmic is NULL\n", __func__);

		return -EINVAL;

	}



	snd_soc_unregister_component(&pdev->dev);

	swr_set_dev_data(pdev, NULL);

	return 0;

}



static int swr_dmic_up(struct swr_device *pdev)

{

	int ret = 0;

	struct swr_dmic_priv *swr_dmic;



	swr_dmic = swr_get_dev_data(pdev);

	if (!swr_dmic) {

		dev_err(&pdev->dev, "%s: swr_dmic is NULL\n", __func__);

		return -EINVAL;

	}

	swr_dmic_vdd_ctrl(swr_dmic, true);



	return ret;

}



static int swr_dmic_down(struct swr_device *pdev)

{

	struct swr_dmic_priv *swr_dmic;

	int ret = 0;



	swr_dmic = swr_get_dev_data(pdev);

	if (!swr_dmic) {

		dev_err(&pdev->dev, "%s: swr_dmic is NULL\n", __func__);

		return -EINVAL;

	}

	swr_dmic_vdd_ctrl(swr_dmic, false);



	return ret;

}



static int swr_dmic_reset(struct swr_device *pdev)

{

	struct swr_dmic_priv *swr_dmic;

	u8 retry = 5;

	u8 devnum = 0;



	swr_dmic = swr_get_dev_data(pdev);

	if (!swr_dmic) {

		dev_err(&pdev->dev, "%s: swr_dmic is NULL\n", __func__);

		return -EINVAL;

	}



	while (swr_get_logical_dev_num(pdev, pdev->addr, &devnum) && retry--) {

		/* Retry after 1 msec delay */

		usleep_range(1000, 1100);

	}

	pdev->dev_num = devnum;



	return 0;

}



#ifdef CONFIG_PM_SLEEP

static int swr_dmic_suspend(struct device *dev)

{

	dev_dbg(dev, "%s: system suspend\n", __func__);

	return 0;

}



static int swr_dmic_resume(struct device *dev)

{

	struct swr_dmic_priv *swr_dmic = swr_get_dev_data(to_swr_device(dev));



	if (!swr_dmic) {

		dev_err(dev, "%s: swr_dmic private data is NULL\n", __func__);

		return -EINVAL;

	}

	dev_dbg(dev, "%s: system resume\n", __func__);

	return 0;

}

#endif /* CONFIG_PM_SLEEP */



static const struct dev_pm_ops swr_dmic_pm_ops = {

	SET_SYSTEM_SLEEP_PM_OPS(swr_dmic_suspend, swr_dmic_resume)

};



static const struct swr_device_id swr_dmic_id[] = {

	{"swr-dmic", 0},

	{}

};



static const struct of_device_id swr_dmic_dt_match[] = {

	{

		.compatible = "qcom,swr-dmic",

	},

	{}

};



static struct swr_driver swr_dmic_driver = {

	.driver = {

		.name = "swr-dmic",

		.owner = THIS_MODULE,

		.pm = &swr_dmic_pm_ops,

		.of_match_table = swr_dmic_dt_match,

	},

	.probe = swr_dmic_probe,

	.remove = swr_dmic_remove,

	.id_table = swr_dmic_id,

	.device_up = swr_dmic_up,

	.device_down = swr_dmic_down,

	.reset_device = swr_dmic_reset,

};



static int __init swr_dmic_init(void)

{

	return swr_driver_register(&swr_dmic_driver);

}



static void __exit swr_dmic_exit(void)

{

	swr_driver_unregister(&swr_dmic_driver);

}



module_init(swr_dmic_init);

module_exit(swr_dmic_exit);



MODULE_DESCRIPTION("SWR DMIC driver");

MODULE_LICENSE("GPL v2");

asoc/codecs/swr-dmic.h

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Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-only */

/* Copyright (c) 2019-2020, The Linux Foundation. All rights reserved.

 */



#ifndef _SWR_DMIC_H

#define _SWR_DMIC_H



#include <sound/soc.h>

#include <sound/info.h>



enum {

	SWR_DMIC_HIFI_PORT = 0,

	SWR_DMIC_LP_PORT,

	SWR_DMIC_MAX_PORTS,

};



#endif /* _SWR_DMIC_H */