[v1,4/5] ASoC: tas2781: Add tas2781 driver

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 79d2362ad055..73f1a32ce1b7 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -234,6 +234,8 @@  config SND_SOC_ALL_CODECS
 	imply SND_SOC_TAS2764
 	imply SND_SOC_TAS2770
 	imply SND_SOC_TAS2780
+	imply SND_SOC_TAS2781_LIB
+	imply SND_SOC_TAS2781
 	imply SND_SOC_TAS5086
 	imply SND_SOC_TAS571X
 	imply SND_SOC_TAS5720
@@ -1699,6 +1701,23 @@  config SND_SOC_TAS2780
 	  Enable support for Texas Instruments TAS2780 high-efficiency
 	  digital input mono Class-D audio power amplifiers.
 
+config SND_SOC_TAS2781_LIB
+	select CRC8
+	select REGMAP_I2C
+	tristate
+
+config SND_SOC_TAS2781
+	tristate "Texas Instruments TAS2781 speaker amplifier"
+	depends on I2C
+	select SND_SOC_TAS2781_LIB
+	select FW_TASDEVICE
+	help
+	  Enable support for Texas Instruments TAS2781 Smart Amplifier
+	  Digital input mono Class-D and DSP-inside audio power amplifiers.
+	  Note the TAS2781 driver implements a flexible and configurable
+	  algo coefficient setting, for one, two or even multiple TAS2781
+	  chips.
+
 config SND_SOC_TAS5086
 	tristate "Texas Instruments TAS5086 speaker amplifier"
 	depends on I2C
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 5cdbae88e6e3..fe58f2ae57c3 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -269,6 +269,8 @@  snd-soc-tas5805m-objs := tas5805m.o
 snd-soc-tas6424-objs := tas6424.o
 snd-soc-tda7419-objs := tda7419.o
 snd-soc-tas2770-objs := tas2770.o
+snd-soc-tas2781-lib-objs := tas2781-lib.o
+snd-soc-tas2781-objs := tas2781-i2c.o
 snd-soc-tfa9879-objs := tfa9879.o
 snd-soc-tfa989x-objs := tfa989x.o
 snd-soc-tlv320adc3xxx-objs := tlv320adc3xxx.o
@@ -633,6 +635,8 @@  obj-$(CONFIG_SND_SOC_TAS2552)	+= snd-soc-tas2552.o
 obj-$(CONFIG_SND_SOC_TAS2562)	+= snd-soc-tas2562.o
 obj-$(CONFIG_SND_SOC_TAS2764)	+= snd-soc-tas2764.o
 obj-$(CONFIG_SND_SOC_TAS2780)	+= snd-soc-tas2780.o
+obj-$(CONFIG_SND_SOC_TAS2781_LIB)	+= snd-soc-tas2781-lib.o
+obj-$(CONFIG_SND_SOC_TAS2781)	+= snd-soc-tas2781.o
 obj-$(CONFIG_SND_SOC_TAS5086)	+= snd-soc-tas5086.o
 obj-$(CONFIG_SND_SOC_TAS571X)	+= snd-soc-tas571x.o
 obj-$(CONFIG_SND_SOC_TAS5720)	+= snd-soc-tas5720.o
diff --git a/sound/soc/codecs/tas2781-i2c.c b/sound/soc/codecs/tas2781-i2c.c
new file mode 100644
index 000000000000..aba3733036af
--- /dev/null
+++ b/sound/soc/codecs/tas2781-i2c.c
@@ -0,0 +1,704 @@ 
+// SPDX-License-Identifier: GPL-2.0
+//
+// ALSA SoC Texas Instruments TAS2781 Audio Smart Amplifier
+//
+// Copyright (C) 2022 - 2023 Texas Instruments Incorporated
+// https://www.ti.com
+//
+// The TAS2781 driver implements a flexible and configurable
+// algo coefficient setting for one, two, or even multiple
+// TAS2781 chips.
+//
+// Author: Shenghao Ding <shenghao-ding@ti.com>
+// Author: Kevin Lu <kevin-lu@ti.com>
+//
+
+#include <linux/crc8.h>
+#include <linux/firmware.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/of_irq.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+#include <sound/tas2781.h>
+
+static const struct i2c_device_id tasdevice_id[] = {
+	{ "tas2781", TAS2781 },
+	{}
+};
+
+MODULE_DEVICE_TABLE(i2c, tasdevice_id);
+
+static const struct of_device_id tasdevice_of_match[] = {
+	{ .compatible = "ti,tas2781" },
+	{},
+};
+
+MODULE_DEVICE_TABLE(of, tasdevice_of_match);
+
+/**
+ * tas2781_digital_getvol - get the volum control
+ * @kcontrol: control pointer
+ * @ucontrol: User data
+ * Customer Kcontrol for tas2781 is primarily for regmap booking, paging
+ * depends on internal regmap mechanism.
+ * tas2781 contains book and page two-level register map, especially
+ * book switching will set the register BXXP00R7F, after switching to the
+ * correct book, then leverage the mechanism for paging to access the
+ * register.
+ */
+static int tas2781_digital_getvol(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol);
+	struct tasdevice_priv *tas_priv = snd_soc_component_get_drvdata(codec);
+	struct soc_mixer_control *mc =
+		(struct soc_mixer_control *)kcontrol->private_value;
+
+	return tasdevice_digital_getvol(tas_priv, ucontrol, mc);
+}
+
+static int tas2781_digital_putvol(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol);
+	struct tasdevice_priv *tas_priv = snd_soc_component_get_drvdata(codec);
+	struct soc_mixer_control *mc =
+		(struct soc_mixer_control *)kcontrol->private_value;
+
+	return tasdevice_digital_putvol(tas_priv, ucontrol, mc);
+}
+
+static int tas2781_amp_getvol(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol);
+	struct tasdevice_priv *tas_priv = snd_soc_component_get_drvdata(codec);
+	struct soc_mixer_control *mc =
+		(struct soc_mixer_control *)kcontrol->private_value;
+
+	return tasdevice_amp_getvol(tas_priv, ucontrol, mc);
+}
+
+static int tas2781_amp_putvol(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol);
+	struct tasdevice_priv *tas_priv =
+		snd_soc_component_get_drvdata(codec);
+	struct soc_mixer_control *mc =
+		(struct soc_mixer_control *)kcontrol->private_value;
+
+	return tasdevice_amp_putvol(tas_priv, ucontrol, mc);
+}
+
+static const struct snd_kcontrol_new tas2781_snd_controls[] = {
+	SOC_SINGLE_RANGE_EXT_TLV("Amp Gain Volume", TAS2781_AMP_LEVEL,
+		1, 0, 20, 0, tas2781_amp_getvol,
+		tas2781_amp_putvol, amp_vol_tlv),
+	SOC_SINGLE_RANGE_EXT_TLV("Digital Volume", TAS2781_DVC_LVL,
+		0, 0, 200, 1, tas2781_digital_getvol,
+		tas2781_digital_putvol, dvc_tlv),
+};
+
+static int tasdevice_set_profile_id(struct snd_kcontrol *kcontrol,
+		struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol);
+	struct tasdevice_priv *tas_priv = snd_soc_component_get_drvdata(codec);
+
+	tas_priv->rcabin.profile_cfg_id = ucontrol->value.integer.value[0];
+
+	return 1;
+}
+
+static int tasdevice_info_programs(struct snd_kcontrol *kcontrol,
+			struct snd_ctl_elem_info *uinfo)
+{
+	struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol);
+	struct tasdevice_priv *tas_priv = snd_soc_component_get_drvdata(codec);
+	struct tasdevice_fw *tas_fw = tas_priv->fmw;
+
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = 1;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = (int)tas_fw->nr_programs;
+
+	return 0;
+}
+
+static int tasdevice_info_configurations(
+	struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
+{
+	struct snd_soc_component *codec =
+		snd_soc_kcontrol_component(kcontrol);
+	struct tasdevice_priv *tas_priv = snd_soc_component_get_drvdata(codec);
+	struct tasdevice_fw *tas_fw = tas_priv->fmw;
+
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = 1;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = (int)tas_fw->nr_configurations - 1;
+
+	return 0;
+}
+
+static int tasdevice_info_profile(struct snd_kcontrol *kcontrol,
+			struct snd_ctl_elem_info *uinfo)
+{
+	struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol);
+	struct tasdevice_priv *tas_priv = snd_soc_component_get_drvdata(codec);
+
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = 1;
+	uinfo->value.integer.min = 1;
+	uinfo->value.integer.max = max(0, tas_priv->rcabin.ncfgs);
+
+	return 0;
+}
+
+static int tasdevice_get_profile_id(struct snd_kcontrol *kcontrol,
+			struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol);
+	struct tasdevice_priv *tas_priv = snd_soc_component_get_drvdata(codec);
+
+	ucontrol->value.integer.value[0] = tas_priv->rcabin.profile_cfg_id;
+
+	return 0;
+}
+
+static int tasdevice_create_control(struct tasdevice_priv *tas_priv)
+{
+	struct snd_kcontrol_new *prof_ctrls;
+	int nr_controls = 1;
+	int mix_index = 0;
+	int ret;
+	char *name;
+
+	prof_ctrls = devm_kcalloc(tas_priv->dev, nr_controls,
+		sizeof(prof_ctrls[0]), GFP_KERNEL);
+	if (!prof_ctrls) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	/* Create a mixer item for selecting the active profile */
+	name = devm_kzalloc(tas_priv->dev, SNDRV_CTL_ELEM_ID_NAME_MAXLEN,
+		GFP_KERNEL);
+	if (!name) {
+		ret = -ENOMEM;
+		goto out;
+	}
+	scnprintf(name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN, "tasdev-profile-id");
+	prof_ctrls[mix_index].name = name;
+	prof_ctrls[mix_index].iface = SNDRV_CTL_ELEM_IFACE_MIXER;
+	prof_ctrls[mix_index].info = tasdevice_info_profile;
+	prof_ctrls[mix_index].get = tasdevice_get_profile_id;
+	prof_ctrls[mix_index].put = tasdevice_set_profile_id;
+	mix_index++;
+
+	ret = snd_soc_add_component_controls(tas_priv->codec,
+		prof_ctrls, nr_controls < mix_index ? nr_controls : mix_index);
+
+out:
+	return ret;
+}
+
+static int tasdevice_program_get(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol);
+	struct tasdevice_priv *tas_priv = snd_soc_component_get_drvdata(codec);
+
+	ucontrol->value.integer.value[0] = tas_priv->cur_prog;
+
+	return 0;
+}
+
+static int tasdevice_program_put(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol);
+	struct tasdevice_priv *tas_priv = snd_soc_component_get_drvdata(codec);
+	unsigned int nr_program = ucontrol->value.integer.value[0];
+
+	tas_priv->cur_prog = nr_program;
+
+	return 1;
+}
+
+static int tasdevice_configuration_get(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+
+	struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol);
+	struct tasdevice_priv *tas_priv = snd_soc_component_get_drvdata(codec);
+
+	ucontrol->value.integer.value[0] = tas_priv->cur_conf;
+
+	return 0;
+}
+
+static int tasdevice_configuration_put(
+	struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol);
+	struct tasdevice_priv *tas_priv = snd_soc_component_get_drvdata(codec);
+	unsigned int nr_configuration = ucontrol->value.integer.value[0];
+
+	tas_priv->cur_conf = nr_configuration;
+
+	return 1;
+}
+
+static int tasdevice_dsp_create_ctrls(
+	struct tasdevice_priv *tas_priv)
+{
+	struct snd_kcontrol_new *dsp_ctrls;
+	char *prog_name, *conf_name;
+	int nr_controls = 2;
+	int mix_index = 0;
+	int ret;
+
+	/* Alloc kcontrol via devm_kzalloc, which don't manually
+	 * free the kcontrol
+	 */
+	dsp_ctrls = devm_kcalloc(tas_priv->dev, nr_controls,
+		sizeof(dsp_ctrls[0]), GFP_KERNEL);
+	if (!dsp_ctrls) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	/* Create a mixer item for selecting the active profile */
+	prog_name = devm_kzalloc(tas_priv->dev,
+		SNDRV_CTL_ELEM_ID_NAME_MAXLEN, GFP_KERNEL);
+	conf_name = devm_kzalloc(tas_priv->dev, SNDRV_CTL_ELEM_ID_NAME_MAXLEN,
+		GFP_KERNEL);
+	if (!prog_name || !conf_name) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	scnprintf(prog_name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN,
+		"tasdev-prog-id");
+	dsp_ctrls[mix_index].name = prog_name;
+	dsp_ctrls[mix_index].iface = SNDRV_CTL_ELEM_IFACE_MIXER;
+	dsp_ctrls[mix_index].info = tasdevice_info_programs;
+	dsp_ctrls[mix_index].get = tasdevice_program_get;
+	dsp_ctrls[mix_index].put = tasdevice_program_put;
+	mix_index++;
+
+	scnprintf(conf_name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN,
+		"tasdev-conf-id");
+	dsp_ctrls[mix_index].name = conf_name;
+	dsp_ctrls[mix_index].iface = SNDRV_CTL_ELEM_IFACE_MIXER;
+	dsp_ctrls[mix_index].info = tasdevice_info_configurations;
+	dsp_ctrls[mix_index].get = tasdevice_configuration_get;
+	dsp_ctrls[mix_index].put = tasdevice_configuration_put;
+	mix_index++;
+
+	ret = snd_soc_add_component_controls(tas_priv->codec, dsp_ctrls,
+		nr_controls < mix_index ? nr_controls : mix_index);
+
+out:
+	return ret;
+}
+
+static void tasdevice_fw_ready(const struct firmware *fmw,
+	void *context)
+{
+	struct tasdevice_priv *tas_priv = (struct tasdevice_priv *)context;
+	int ret = 0;
+	int i;
+
+	mutex_lock(&tas_priv->codec_lock);
+
+	ret = tasdevice_rca_parser(tas_priv, fmw);
+	if (ret)
+		goto out;
+	tasdevice_create_control(tas_priv);
+
+	tasdevice_dsp_remove(tas_priv);
+	tasdevice_calbin_remove(tas_priv);
+	tas_priv->fw_state = TASDEVICE_DSP_FW_PENDING;
+	scnprintf(tas_priv->coef_binaryname, 64, "%s_coef.bin",
+		tas_priv->dev_name);
+	ret = tasdevice_dsp_parser(tas_priv);
+	if (ret) {
+		dev_err(tas_priv->dev, "dspfw load %s error\n",
+			tas_priv->coef_binaryname);
+		tas_priv->fw_state = TASDEVICE_DSP_FW_FAIL;
+		goto out;
+	}
+	tasdevice_dsp_create_ctrls(tas_priv);
+
+	tas_priv->fw_state = TASDEVICE_DSP_FW_ALL_OK;
+
+	/* If calibrated data occurs error, dsp will still works with default
+	 * calibrated data inside algo.
+	 */
+	for (i = 0; i < tas_priv->ndev; i++) {
+		scnprintf(tas_priv->cal_binaryname[i], 64, "%s_cal_0x%02x.bin",
+			tas_priv->dev_name, tas_priv->tasdevice[i].dev_addr);
+		ret = tas2781_load_calibration(tas_priv,
+			tas_priv->cal_binaryname[i], i);
+		if (ret != 0)
+			dev_err(tas_priv->dev,
+				"%s: load %s error, default will effect\n",
+				__func__, tas_priv->cal_binaryname[i]);
+	}
+
+	tasdevice_prmg_calibdata_load(tas_priv, 0);
+	tas_priv->cur_prog = 0;
+out:
+	if (tas_priv->fw_state == TASDEVICE_DSP_FW_FAIL) {
+		/*If DSP FW fail, kcontrol won't be created */
+		tasdevice_config_info_remove(tas_priv);
+		tasdevice_dsp_remove(tas_priv);
+	}
+	mutex_unlock(&tas_priv->codec_lock);
+	if (fmw)
+		release_firmware(fmw);
+}
+
+static int tasdevice_dapm_event(struct snd_soc_dapm_widget *w,
+			struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_component *codec = snd_soc_dapm_to_component(w->dapm);
+	struct tasdevice_priv *tas_priv = snd_soc_component_get_drvdata(codec);
+	int state = 0;
+
+	/* Codec Lock Hold */
+	mutex_lock(&tas_priv->codec_lock);
+	if (event == SND_SOC_DAPM_PRE_PMD)
+		state = 1;
+	tasdevice_tuning_switch(tas_priv, state);
+	/* Codec Lock Release*/
+	mutex_unlock(&tas_priv->codec_lock);
+
+	return 0;
+}
+
+static const struct snd_soc_dapm_widget tasdevice_dapm_widgets[] = {
+	SND_SOC_DAPM_AIF_IN("ASI", "ASI Playback", 0, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_AIF_OUT_E("ASI OUT", "ASI Capture", 0, SND_SOC_NOPM,
+		0, 0, tasdevice_dapm_event,
+		SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
+	SND_SOC_DAPM_SPK("SPK", tasdevice_dapm_event),
+	SND_SOC_DAPM_OUTPUT("OUT"),
+	SND_SOC_DAPM_INPUT("DMIC")
+};
+
+static const struct snd_soc_dapm_route tasdevice_audio_map[] = {
+	{"SPK", NULL, "ASI"},
+	{"OUT", NULL, "SPK"},
+	{"ASI OUT", NULL, "DMIC"}
+};
+
+static int tasdevice_startup(struct snd_pcm_substream *substream,
+						struct snd_soc_dai *dai)
+{
+	struct snd_soc_component *codec = dai->component;
+	struct tasdevice_priv *tas_priv = snd_soc_component_get_drvdata(codec);
+	int ret = 0;
+
+	if (tas_priv->fw_state != TASDEVICE_DSP_FW_ALL_OK) {
+		dev_err(tas_priv->dev, "DSP bin file not loaded\n");
+		ret = -EINVAL;
+	}
+
+	return ret;
+}
+
+static int tasdevice_hw_params(struct snd_pcm_substream *substream,
+	struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
+{
+	struct tasdevice_priv *tas_priv = snd_soc_dai_get_drvdata(dai);
+	unsigned int slot_width;
+	unsigned int fsrate;
+	int bclk_rate;
+	int rc = 0;
+
+	fsrate = params_rate(params);
+	switch (fsrate) {
+	case 48000:
+	case 44100:
+		break;
+	default:
+		dev_err(tas_priv->dev, "%s: incorrect sample rate = %u\n",
+			__func__, fsrate);
+		rc = -EINVAL;
+		goto out;
+	}
+
+	slot_width = params_width(params);
+	switch (slot_width) {
+	case 16:
+	case 20:
+	case 24:
+	case 32:
+		break;
+	default:
+		dev_err(tas_priv->dev, "%s: incorrect slot width = %u\n",
+			__func__, slot_width);
+		rc = -EINVAL;
+		goto out;
+	}
+
+	bclk_rate = snd_soc_params_to_bclk(params);
+	if (bclk_rate < 0) {
+		dev_err(tas_priv->dev, "%s: incorrect bclk rate = %d\n",
+			__func__, bclk_rate);
+		rc = bclk_rate;
+		goto out;
+	}
+
+out:
+	return rc;
+}
+
+static int tasdevice_set_dai_sysclk(struct snd_soc_dai *codec_dai,
+	int clk_id, unsigned int freq, int dir)
+{
+	struct tasdevice_priv *tas_priv = snd_soc_dai_get_drvdata(codec_dai);
+
+	tas_priv->sysclk = freq;
+
+	return 0;
+}
+
+static const struct snd_soc_dai_ops tasdevice_dai_ops = {
+	.startup = tasdevice_startup,
+	.hw_params = tasdevice_hw_params,
+	.set_sysclk = tasdevice_set_dai_sysclk,
+};
+
+static struct snd_soc_dai_driver tasdevice_dai_driver[] = {
+	{
+		.name = "tas2781_codec",
+		.id = 0,
+		.playback = {
+			.stream_name = "Playback",
+			.channels_min = 1,
+			.channels_max = 4,
+			.rates	 = TASDEVICE_RATES,
+			.formats	= TASDEVICE_FORMATS,
+		},
+		.capture = {
+			.stream_name = "Capture",
+			.channels_min = 1,
+			.channels_max = 4,
+			.rates	 = TASDEVICE_RATES,
+			.formats	= TASDEVICE_FORMATS,
+		},
+		.ops = &tasdevice_dai_ops,
+		.symmetric_rate = 1,
+	},
+};
+
+static int tasdevice_codec_probe(struct snd_soc_component *codec)
+{
+	struct tasdevice_priv *tas_priv = snd_soc_component_get_drvdata(codec);
+
+	return tascodec_init(tas_priv, codec, tasdevice_fw_ready);
+}
+
+static void tasdevice_deinit(void *context)
+{
+	struct tasdevice_priv *tas_priv = (struct tasdevice_priv *) context;
+
+	tasdevice_config_info_remove(tas_priv);
+	tasdevice_dsp_remove(tas_priv);
+	tasdevice_calbin_remove(tas_priv);
+	tas_priv->fw_state = TASDEVICE_DSP_FW_PENDING;
+}
+
+static void tasdevice_codec_remove(
+	struct snd_soc_component *codec)
+{
+	struct tasdevice_priv *tas_priv = snd_soc_component_get_drvdata(codec);
+
+	tasdevice_deinit(tas_priv);
+}
+
+static const struct snd_soc_component_driver
+	soc_codec_driver_tasdevice = {
+	.probe			= tasdevice_codec_probe,
+	.remove			= tasdevice_codec_remove,
+	.controls		= tas2781_snd_controls,
+	.num_controls		= ARRAY_SIZE(tas2781_snd_controls),
+	.dapm_widgets		= tasdevice_dapm_widgets,
+	.num_dapm_widgets	= ARRAY_SIZE(tasdevice_dapm_widgets),
+	.dapm_routes		= tasdevice_audio_map,
+	.num_dapm_routes	= ARRAY_SIZE(tasdevice_audio_map),
+	.idle_bias_on		= 1,
+	.endianness		= 1,
+};
+
+static void tasdevice_parse_dt(struct tasdevice_priv *tas_priv)
+{
+	struct i2c_client *client = (struct i2c_client *)tas_priv->client;
+	unsigned int dev_addrs[max_chn];
+	int rc, i, ndev;
+
+	if (tas_priv->isacpi) {
+		ndev = device_property_read_u32_array(&client->dev,
+			"ti,audio-slots", NULL, 0);
+		if (ndev <= 0) {
+			ndev = 1;
+			dev_addrs[0] = client->addr;
+		} else {
+			ndev = (ndev < ARRAY_SIZE(dev_addrs))
+				? ndev : ARRAY_SIZE(dev_addrs);
+			ndev = device_property_read_u32_array(&client->dev,
+				"ti,audio-slots", dev_addrs, ndev);
+		}
+
+		tas_priv->irq_info.irq_gpio =
+			acpi_dev_gpio_irq_get(ACPI_COMPANION(&client->dev), 0);
+	} else {
+		struct device_node *np = tas_priv->dev->of_node;
+
+		ndev = of_property_read_variable_u32_array(np,
+			"ti,audio-slots", dev_addrs, 0, ARRAY_SIZE(dev_addrs));
+		if (ndev <= 0) {
+			ndev = 1;
+			dev_addrs[0] = client->addr;
+		}
+		tas_priv->irq_info.irq_gpio = of_irq_get(np, 0);
+	}
+	tas_priv->ndev = ndev;
+	for (i = 0; i < ndev; i++)
+		tas_priv->tasdevice[i].dev_addr = dev_addrs[i];
+
+	if (ndev > 1) {
+		rc = device_property_read_u32(&client->dev,
+			"ti,broadcast-addr",
+			&(tas_priv->glb_addr.dev_addr));
+		if (rc) {
+			dev_err(tas_priv->dev,
+				"Looking up broadcast-addr failed %d\n", rc);
+			tas_priv->glb_addr.dev_addr = 0;
+		}
+	}
+
+	tas_priv->reset = devm_gpiod_get_optional(&client->dev,
+			"reset-gpios", GPIOD_OUT_HIGH);
+	if (IS_ERR(tas_priv->reset))
+		dev_err(tas_priv->dev, "%s Can't get reset GPIO\n",
+			__func__);
+
+	strcpy(tas_priv->dev_name, tasdevice_id[tas_priv->chip_id].name);
+
+	if (gpio_is_valid(tas_priv->irq_info.irq_gpio)) {
+		rc = gpio_request(tas_priv->irq_info.irq_gpio,
+				"AUDEV-IRQ");
+		if (!rc) {
+			gpio_direction_input(
+				tas_priv->irq_info.irq_gpio);
+
+			tas_priv->irq_info.irq =
+				gpio_to_irq(tas_priv->irq_info.irq_gpio);
+		} else
+			dev_err(tas_priv->dev, "%s: GPIO %d request error\n",
+				__func__, tas_priv->irq_info.irq_gpio);
+	} else
+		dev_err(tas_priv->dev,
+			"Looking up irq-gpio property failed %d\n",
+			tas_priv->irq_info.irq_gpio);
+}
+
+static int tasdevice_i2c_probe(struct i2c_client *i2c)
+{
+	const struct i2c_device_id *id = i2c_match_id(tasdevice_id, i2c);
+	const struct acpi_device_id *acpi_id;
+	struct tasdevice_priv *tas_priv;
+	int ret;
+
+	tas_priv = tasdevice_kzalloc(i2c);
+	if (!tas_priv)
+		return -ENOMEM;
+
+	if (ACPI_HANDLE(&i2c->dev)) {
+		acpi_id = acpi_match_device(i2c->dev.driver->acpi_match_table,
+				&i2c->dev);
+		if (!acpi_id) {
+			dev_err(&i2c->dev, "No driver data\n");
+			ret = -EINVAL;
+			goto err;
+		}
+		tas_priv->chip_id = acpi_id->driver_data;
+		tas_priv->isacpi = true;
+	} else {
+		tas_priv->chip_id = id ? id->driver_data : 0;
+		tas_priv->isacpi = false;
+	}
+
+	tasdevice_parse_dt(tas_priv);
+
+	ret = tasdevice_init(tas_priv);
+	if (ret)
+		goto err;
+
+	ret = devm_snd_soc_register_component(tas_priv->dev,
+		&soc_codec_driver_tasdevice,
+		tasdevice_dai_driver, ARRAY_SIZE(tasdevice_dai_driver));
+	if (ret) {
+		dev_err(tas_priv->dev, "%s: codec register error:0x%08x\n",
+			__func__, ret);
+		goto err;
+	}
+err:
+	if (ret < 0)
+		tasdevice_remove(tas_priv);
+	return ret;
+}
+
+static void tasdevice_i2c_remove(struct i2c_client *client)
+{
+	struct tasdevice_priv *tas_priv = i2c_get_clientdata(client);
+
+	tasdevice_remove(tas_priv);
+}
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id tasdevice_acpi_match[] = {
+	{ "TAS2781", TAS2781 },
+	{},
+};
+
+MODULE_DEVICE_TABLE(acpi, tasdevice_acpi_match);
+#endif
+
+static struct i2c_driver tasdevice_i2c_driver = {
+	.driver = {
+		.name = "tas2781-codec",
+		.owner = THIS_MODULE,
+		.of_match_table = of_match_ptr(tasdevice_of_match),
+#ifdef CONFIG_ACPI
+		.acpi_match_table = ACPI_PTR(tasdevice_acpi_match),
+#endif
+	},
+	.probe	= tasdevice_i2c_probe,
+	.remove = tasdevice_i2c_remove,
+	.id_table = tasdevice_id,
+};
+
+module_i2c_driver(tasdevice_i2c_driver);
+
+MODULE_AUTHOR("Shenghao Ding <shenghao-ding@ti.com>");
+MODULE_AUTHOR("Kevin Lu <kevin-lu@ti.com>");
+MODULE_DESCRIPTION("ASoC TAS2781 Driver");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(FW_TASDEVICE);
diff --git a/sound/soc/codecs/tas2781-lib.c b/sound/soc/codecs/tas2781-lib.c
new file mode 100644
index 000000000000..8b0f66cea4fe
--- /dev/null
+++ b/sound/soc/codecs/tas2781-lib.c
@@ -0,0 +1,582 @@ 
+// SPDX-License-Identifier: GPL-2.0
+//
+// tas2781-lib.c -- TAS2781 Common functions for HDA and ASoC Audio drivers
+//
+// Copyright 2023 Texas Instruments, Inc.
+//
+// Author: Shenghao Ding <shenghao-ding@ti.com>
+
+#include <linux/crc8.h>
+#include <linux/firmware.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/of_irq.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+#include <sound/tas2781.h>
+
+#define TASDEVICE_CRC8_POLYNOMIAL	0x4d
+
+static const struct regmap_range_cfg tasdevice_ranges[] = {
+	{
+		.range_min = 0,
+		.range_max = 256 * 128,
+		.selector_reg = TASDEVICE_PAGE_SELECT,
+		.selector_mask = 0xff,
+		.selector_shift = 0,
+		.window_start = 0,
+		.window_len = 128,
+	},
+};
+
+static const struct regmap_config tasdevice_regmap = {
+	.reg_bits = 16,
+	.val_bits = 8,
+	.cache_type = REGCACHE_RBTREE,
+	.ranges = tasdevice_ranges,
+	.num_ranges = ARRAY_SIZE(tasdevice_ranges),
+	.max_register = 256 * 128,
+};
+
+static int tasdevice_change_chn_book(struct tasdevice_priv *tas_priv,
+	enum channel chn, int book)
+{
+	struct i2c_client *client = (struct i2c_client *)tas_priv->client;
+	int ret = 0;
+	int i;
+
+	if (chn < tas_priv->ndev) {
+		struct tasdevice *tasdev = &tas_priv->tasdevice[chn];
+
+		if (tas_priv->glb_addr.ref_cnt != 0) {
+			tas_priv->glb_addr.ref_cnt = 0;
+			tas_priv->glb_addr.cur_book = -1;
+		}
+		client->addr = tasdev->dev_addr;
+		if (tasdev->cur_book != book) {
+			ret = regmap_write(tas_priv->regmap,
+				TASDEVICE_BOOKCTL_REG, book);
+			if (ret < 0) {
+				dev_err(tas_priv->dev, "%s, E=%d\n",
+					__func__, ret);
+				goto out;
+			}
+			tasdev->cur_book = book;
+		}
+	} else if (chn == tas_priv->ndev) {
+		struct global_addr *glb_addr = &tas_priv->glb_addr;
+
+		/* Chn == device number will enable global broadcast mode*/
+		if (tas_priv->glb_addr.ref_cnt == 0)
+			for (i = 0; i < tas_priv->ndev; i++)
+				tas_priv->tasdevice[i].cur_book = -1;
+		client->addr = glb_addr->dev_addr;
+		if (glb_addr->cur_book != book) {
+			ret = regmap_write(tas_priv->regmap,
+				TASDEVICE_BOOKCTL_REG, book);
+			if (ret < 0) {
+				dev_err(tas_priv->dev, "%s, book%x, E=%d\n",
+					__func__, book, ret);
+				goto out;
+			}
+			glb_addr->cur_book = book;
+		}
+
+		glb_addr->ref_cnt++;
+	} else {
+		ret = -EINVAL;
+		dev_err(tas_priv->dev, "%s, no such channel(%d)\n", __func__,
+			chn);
+	}
+
+out:
+	return ret;
+}
+
+int tasdevice_dev_read(struct tasdevice_priv *tas_priv,
+	enum channel chn, unsigned int reg, unsigned int *val)
+{
+	int ret = 0;
+
+	if (chn < tas_priv->ndev) {
+		ret = tasdevice_change_chn_book(tas_priv, chn,
+			TASDEVICE_BOOK_ID(reg));
+		if (ret < 0)
+			goto out;
+
+		ret = regmap_read(tas_priv->regmap, TASDEVICE_PGRG(reg), val);
+		if (ret < 0)
+			dev_err(tas_priv->dev, "%s, E=%d\n", __func__, ret);
+	} else {
+		ret = -EINVAL;
+		dev_err(tas_priv->dev, "%s, no such channel(%d)\n", __func__,
+			chn);
+	}
+
+out:
+	return ret;
+}
+EXPORT_SYMBOL_GPL(tasdevice_dev_read);
+
+int tasdevice_dev_write(struct tasdevice_priv *tas_priv,
+	enum channel chn, unsigned int reg, unsigned int value)
+{
+	int ret = 0;
+
+	/* chn <= tas_dev->ndev will support global broadcast mode*/
+	if (chn <= tas_priv->ndev) {
+		ret = tasdevice_change_chn_book(tas_priv, chn,
+			TASDEVICE_BOOK_ID(reg));
+		if (ret < 0)
+			goto out;
+
+		ret = regmap_write(tas_priv->regmap, TASDEVICE_PGRG(reg),
+			value);
+		if (ret < 0)
+			dev_err(tas_priv->dev, "%s, E=%d\n", __func__, ret);
+	} else {
+		ret = -EINVAL;
+		dev_err(tas_priv->dev, "%s, no such channel(%d)\n", __func__,
+			chn);
+	}
+
+out:
+	return ret;
+}
+EXPORT_SYMBOL_GPL(tasdevice_dev_write);
+
+int tasdevice_dev_bulk_write(
+	struct tasdevice_priv *tas_priv, enum channel chn,
+	unsigned int reg, unsigned char *data,
+	unsigned int len)
+{
+	int ret = 0;
+
+	/* chn <= tas_dev->ndev will support global broadcast mode*/
+	if (chn <= tas_priv->ndev) {
+		ret = tasdevice_change_chn_book(tas_priv, chn,
+			TASDEVICE_BOOK_ID(reg));
+		if (ret < 0)
+			goto out;
+
+		ret = regmap_bulk_write(tas_priv->regmap, TASDEVICE_PGRG(reg),
+			data, len);
+		if (ret < 0)
+			dev_err(tas_priv->dev, "%s, E=%d\n", __func__, ret);
+	} else {
+		ret = -EINVAL;
+		dev_err(tas_priv->dev, "%s, no such channel(%d)\n", __func__,
+			chn);
+	}
+
+out:
+	return ret;
+}
+EXPORT_SYMBOL_GPL(tasdevice_dev_bulk_write);
+
+int tasdevice_dev_bulk_read(struct tasdevice_priv *tas_priv,
+	enum channel chn, unsigned int reg, unsigned char *data,
+	unsigned int len)
+{
+	int ret = 0;
+
+	if (chn < tas_priv->ndev) {
+		ret = tasdevice_change_chn_book(tas_priv, chn,
+			TASDEVICE_BOOK_ID(reg));
+		if (ret < 0)
+			goto out;
+
+		ret = regmap_bulk_read(tas_priv->regmap, TASDEVICE_PGRG(reg),
+			data, len);
+		if (ret < 0)
+			dev_err(tas_priv->dev, "%s, E=%d\n", __func__, ret);
+	} else
+		dev_err(tas_priv->dev, "%s, no such channel(%d)\n", __func__,
+			chn);
+
+out:
+	return ret;
+}
+EXPORT_SYMBOL_GPL(tasdevice_dev_bulk_read);
+
+int tasdevice_dev_update_bits(
+	struct tasdevice_priv *tas_priv, enum channel chn,
+	unsigned int reg, unsigned int mask, unsigned int value)
+{
+	int ret = 0;
+
+	/* update-bits can't support global broadcast mode,
+	 * because this operation contains a reading operation
+	 * for register value. In global mode, reading register
+	 * from all of the tas2781 will cause confusion.
+	 */
+	if (chn < tas_priv->ndev) {
+		ret = tasdevice_change_chn_book(tas_priv, chn,
+			TASDEVICE_BOOK_ID(reg));
+		if (ret < 0)
+			goto out;
+
+		ret = regmap_update_bits(tas_priv->regmap,
+			TASDEVICE_PGRG(reg), mask, value);
+		if (ret < 0)
+			dev_err(tas_priv->dev, "%s, E=%d\n", __func__, ret);
+	} else {
+		dev_err(tas_priv->dev, "%s, no such channel(%d)\n", __func__,
+			chn);
+		ret = -EINVAL;
+	}
+
+out:
+	return ret;
+}
+EXPORT_SYMBOL_GPL(tasdevice_dev_update_bits);
+
+/* Only register write and bulk write support global mode
+ * Other cases, such as bits update, register read and bulk
+ * only support device-by-device operation
+ */
+static void tas2781_set_global_mode(struct tasdevice_priv *tas_priv)
+{
+	int i, ret;
+
+	for (i = 0; i < tas_priv->ndev; i++) {
+		ret = tasdevice_dev_update_bits(tas_priv, i,
+			TAS2781_MISC_CFG2, TAS2781_GLOBAL_ADDR_MASK,
+			TAS2781_GLOBAL_ADDR_ENABLE);
+		if (ret < 0) {
+			dev_err(tas_priv->dev, "%s: chn %d set glb fail, %d\n",
+				__func__, i, ret);
+			continue;
+		}
+	}
+}
+
+struct tasdevice_priv *tasdevice_kzalloc(struct i2c_client *i2c)
+{
+	struct tasdevice_priv *tas_priv;
+
+	tas_priv = devm_kzalloc(&i2c->dev, sizeof(*tas_priv), GFP_KERNEL);
+	if (!tas_priv)
+		return NULL;
+	tas_priv->dev = &i2c->dev;
+	tas_priv->client = (void *)i2c;
+
+	return tas_priv;
+}
+EXPORT_SYMBOL_GPL(tasdevice_kzalloc);
+
+void tas2781_reset(struct tasdevice_priv *tas_dev)
+{
+	int ret, i;
+
+	if (tas_dev->reset) {
+		gpiod_set_value_cansleep(tas_dev->reset, 0);
+		usleep_range(500, 1000);
+		gpiod_set_value_cansleep(tas_dev->reset, 1);
+	} else {
+		for (i = 0; i < tas_dev->ndev; i++) {
+			ret = tasdevice_dev_write(tas_dev, i,
+				TAS2781_REG_SWRESET,
+				TAS2781_REG_SWRESET_RESET);
+			if (ret < 0)
+				dev_err(tas_dev->dev,
+					"dev %d swreset fail, %d\n",
+					i, ret);
+		}
+	}
+	usleep_range(1000, 1050);
+}
+EXPORT_SYMBOL_GPL(tas2781_reset);
+
+int tascodec_init(struct tasdevice_priv *tas_priv, void *codec,
+	void (*cont)(const struct firmware *fw, void *context))
+{
+	int ret = 0;
+
+	/* Codec Lock Hold to ensure that codec_probe and firmware parsing and
+	 * loading do not simultaneously execute.
+	 */
+	mutex_lock(&tas_priv->codec_lock);
+
+	scnprintf(tas_priv->rca_binaryname, 64, "%srca%d.bin",
+		tas_priv->dev_name, tas_priv->ndev);
+	crc8_populate_msb(tas_priv->crc8_lkp_tbl, TASDEVICE_CRC8_POLYNOMIAL);
+	tas_priv->codec = codec;
+	ret = request_firmware_nowait(THIS_MODULE, FW_ACTION_UEVENT,
+		tas_priv->rca_binaryname, tas_priv->dev, GFP_KERNEL, tas_priv,
+		cont);
+	if (ret)
+		dev_err(tas_priv->dev, "request_firmware_nowait err:0x%08x\n",
+			ret);
+
+	tas2781_reset(tas_priv);
+	if (tas_priv->set_global_mode)
+		tas_priv->set_global_mode(tas_priv);
+
+	/* Codec Lock Release*/
+	mutex_unlock(&tas_priv->codec_lock);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(tascodec_init);
+
+int tasdevice_init(struct tasdevice_priv *tas_priv)
+{
+	int ret = 0;
+	int i;
+
+	tas_priv->regmap = devm_regmap_init_i2c(tas_priv->client,
+		&tasdevice_regmap);
+	if (IS_ERR(tas_priv->regmap)) {
+		ret = PTR_ERR(tas_priv->regmap);
+		dev_err(tas_priv->dev, "Failed to allocate register map: %d\n",
+			ret);
+		goto out;
+	}
+
+	tas_priv->cur_prog = -1;
+	tas_priv->cur_conf = -1;
+
+	for (i = 0; i < tas_priv->ndev; i++) {
+		tas_priv->tasdevice[i].cur_book = -1;
+		tas_priv->tasdevice[i].cur_prog = -1;
+		tas_priv->tasdevice[i].cur_conf = -1;
+	}
+
+	if (tas_priv->glb_addr.dev_addr != 0
+		&& tas_priv->glb_addr.dev_addr < 0x7F)
+		tas_priv->set_global_mode = tas2781_set_global_mode;
+	dev_set_drvdata(tas_priv->dev, tas_priv);
+
+	mutex_init(&tas_priv->codec_lock);
+
+out:
+	return ret;
+}
+EXPORT_SYMBOL_GPL(tasdevice_init);
+
+static void tasdev_dsp_prog_blk_remove(struct tasdevice_prog *prog)
+{
+	struct tasdevice_data *im;
+	struct tasdev_blk *blk;
+	unsigned int nr_blk;
+
+	if (!prog)
+		return;
+
+	im = &(prog->dev_data);
+
+	if (!im->dev_blks)
+		return;
+
+	for (nr_blk = 0; nr_blk < im->nr_blk; nr_blk++) {
+		blk = &(im->dev_blks[nr_blk]);
+		kfree(blk->data);
+	}
+	kfree(im->dev_blks);
+}
+
+static void tasdev_dsp_prog_remove(struct tasdevice_prog *prog,
+	unsigned short nr)
+{
+	int i;
+
+	for (i = 0; i < nr; i++)
+		tasdev_dsp_prog_blk_remove(&prog[i]);
+	kfree(prog);
+}
+
+static void tasdev_dsp_cfg_blk_remove(struct tasdevice_config *cfg)
+{
+	struct tasdevice_data *im;
+	struct tasdev_blk *blk;
+	unsigned int nr_blk;
+
+	if (cfg) {
+		im = &(cfg->dev_data);
+
+		if (!im->dev_blks)
+			return;
+
+		for (nr_blk = 0; nr_blk < im->nr_blk; nr_blk++) {
+			blk = &(im->dev_blks[nr_blk]);
+			kfree(blk->data);
+		}
+		kfree(im->dev_blks);
+	}
+}
+
+static void tasdev_dsp_cfg_remove(struct tasdevice_config *config,
+	unsigned short nr)
+{
+	int i;
+
+	for (i = 0; i < nr; i++)
+		tasdev_dsp_cfg_blk_remove(&config[i]);
+	kfree(config);
+}
+
+void tasdevice_dsp_remove(void *context)
+{
+	struct tasdevice_priv *tas_dev = (struct tasdevice_priv *) context;
+	struct tasdevice_fw *tas_fmw = tas_dev->fmw;
+
+	if (!tas_dev->fmw)
+		return;
+
+	if (tas_fmw->programs)
+		tasdev_dsp_prog_remove(tas_fmw->programs,
+			tas_fmw->nr_programs);
+	if (tas_fmw->configs)
+		tasdev_dsp_cfg_remove(tas_fmw->configs,
+			tas_fmw->nr_configurations);
+	kfree(tas_fmw);
+	tas_dev->fmw = NULL;
+}
+EXPORT_SYMBOL_GPL(tasdevice_dsp_remove);
+
+void tasdevice_remove(struct tasdevice_priv *tas_priv)
+{
+	if (gpio_is_valid(tas_priv->irq_info.irq_gpio))
+		gpio_free(tas_priv->irq_info.irq_gpio);
+	kfree(tas_priv->acpi_subsystem_id);
+	mutex_destroy(&tas_priv->codec_lock);
+}
+EXPORT_SYMBOL_GPL(tasdevice_remove);
+
+static int tasdevice_clamp(int val, int max, unsigned int invert)
+{
+	if (val > max)
+		val = max;
+	if (invert)
+		val = max - val;
+	if (val < 0)
+		val = 0;
+	return val;
+}
+
+int tasdevice_amp_putvol(struct tasdevice_priv *tas_priv,
+	struct snd_ctl_elem_value *ucontrol, struct soc_mixer_control *mc)
+{
+	unsigned int invert = mc->invert;
+	unsigned char mask;
+	int max = mc->max;
+	int err_cnt = 0;
+	int val, i, ret;
+
+	mask = (1 << fls(max)) - 1;
+	mask <<= mc->shift;
+	val = tasdevice_clamp(ucontrol->value.integer.value[0], max, invert);
+	for (i = 0; i < tas_priv->ndev; i++) {
+		ret = tasdevice_dev_update_bits(tas_priv, i,
+			mc->reg, mask, (unsigned int)(val << mc->shift));
+		if (!ret)
+			continue;
+		err_cnt++;
+		dev_err(tas_priv->dev, "set AMP vol error in dev %d\n", i);
+	}
+
+	/* All the devices set error, return 0 */
+	return (err_cnt == tas_priv->ndev) ? 0 : 1;
+}
+EXPORT_SYMBOL_GPL(tasdevice_amp_putvol);
+
+int tasdevice_amp_getvol(struct tasdevice_priv *tas_priv,
+	struct snd_ctl_elem_value *ucontrol, struct soc_mixer_control *mc)
+{
+	unsigned int invert = mc->invert;
+	unsigned char mask = 0;
+	int max = mc->max;
+	int ret = 0;
+	int val;
+
+	/* Read the primary device */
+	ret = tasdevice_dev_read(tas_priv, 0, mc->reg, &val);
+	if (ret) {
+		dev_err(tas_priv->dev, "%s, get AMP vol error\n", __func__);
+		goto out;
+	}
+
+	mask = (1 << fls(max)) - 1;
+	mask <<= mc->shift;
+	val = (val & mask) >> mc->shift;
+	val = tasdevice_clamp(val, max, invert);
+	ucontrol->value.integer.value[0] = val;
+
+out:
+	return ret;
+
+}
+EXPORT_SYMBOL_GPL(tasdevice_amp_getvol);
+
+int tasdevice_digital_putvol(struct tasdevice_priv *tas_priv,
+	struct snd_ctl_elem_value *ucontrol, struct soc_mixer_control *mc)
+{
+	unsigned int invert = mc->invert;
+	int max = mc->max;
+	int err_cnt = 0;
+	int ret = 1;
+	int val, i;
+
+	val = tasdevice_clamp(ucontrol->value.integer.value[0], max, invert);
+
+	if (tas_priv->set_global_mode) {
+		ret = tasdevice_dev_write(tas_priv, tas_priv->ndev,
+			mc->reg, (unsigned int)val);
+		if (ret)
+			dev_err(tas_priv->dev, "%s, error in global mode\n",
+				__func__);
+	}
+
+	if (!tas_priv->set_global_mode || ret != 0) {
+		for (i = 0; i < tas_priv->ndev; i++) {
+			ret = tasdevice_dev_write(tas_priv, i, mc->reg,
+				(unsigned int)val);
+			if (!ret)
+				continue;
+			err_cnt++;
+			dev_err(tas_priv->dev,
+				"set digital vol err in dev %d\n", i);
+		}
+	}
+
+	/* All the devices set error, return 0 */
+	return (err_cnt == tas_priv->ndev) ? 0 : 1;
+
+}
+EXPORT_SYMBOL_GPL(tasdevice_digital_putvol);
+
+int tasdevice_digital_getvol(struct tasdevice_priv *tas_priv,
+	struct snd_ctl_elem_value *ucontrol, struct soc_mixer_control *mc)
+{
+	unsigned int invert = mc->invert;
+	int max = mc->max;
+	int ret, val;
+
+	/* Read the primary device as the whole */
+	ret = tasdevice_dev_read(tas_priv, 0, mc->reg, &val);
+	if (ret) {
+		dev_err(tas_priv->dev, "%s, get digital vol error\n",
+			__func__);
+		goto out;
+	}
+
+	val = tasdevice_clamp(val, max, invert);
+	ucontrol->value.integer.value[0] = val;
+
+out:
+	return ret;
+
+}
+EXPORT_SYMBOL_GPL(tasdevice_digital_getvol);
+
+MODULE_DESCRIPTION("TAS2781 library");
+MODULE_AUTHOR("Shenghao Ding, TI, <shenghao-ding@ti.com>");
+MODULE_LICENSE("GPL");