--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+// Driver for the Texas Instruments TAS2780 Mono
+// Audio amplifier
+// Copyright (C) 2022 Texas Instruments Inc.
+
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/pm.h>
+#include <linux/i2c.h>
+#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
+#include <linux/regmap.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <sound/soc.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/tlv.h>
+
+#include "tas2780.h"
+
+struct tas2780_priv {
+ struct snd_soc_component *component;
+ struct gpio_desc *reset_gpio;
+ struct regmap *regmap;
+ struct device *dev;
+ int v_sense_slot;
+ int i_sense_slot;
+};
+
+static void tas2780_reset(struct tas2780_priv *tas2780)
+{
+ int ret = 0;
+
+ if (tas2780->reset_gpio) {
+ gpiod_set_value_cansleep(tas2780->reset_gpio, 0);
+ usleep_range(2000, 2050);
+ gpiod_set_value_cansleep(tas2780->reset_gpio, 1);
+ usleep_range(2000, 2050);
+ }
+
+ snd_soc_component_write(tas2780->component, TAS2780_SW_RST,
+ TAS2780_RST);
+ if (ret)
+ dev_err(tas2780->dev, "%s:errCode:0x%x Reset error!\n",
+ __func__, ret);
+}
+
+#ifdef CONFIG_PM
+static int tas2780_codec_suspend(struct snd_soc_component *component)
+{
+ struct tas2780_priv *tas2780 =
+ snd_soc_component_get_drvdata(component);
+ int ret = 0;
+
+ ret = snd_soc_component_update_bits(component, TAS2780_PWR_CTRL,
+ TAS2780_PWR_CTRL_MASK, TAS2780_PWR_CTRL_SHUTDOWN);
+ if (ret < 0) {
+ dev_err(tas2780->dev, "%s:errCode:0x%0x:power down error\n",
+ __func__, ret);
+ goto err;
+ }
+ ret = 0;
+ regcache_cache_only(tas2780->regmap, true);
+ regcache_mark_dirty(tas2780->regmap);
+err:
+ return ret;
+}
+
+static int tas2780_codec_resume(struct snd_soc_component *component)
+{
+ struct tas2780_priv *tas2780 =
+ snd_soc_component_get_drvdata(component);
+ int ret = 0;
+
+ ret = snd_soc_component_update_bits(component, TAS2780_PWR_CTRL,
+ TAS2780_PWR_CTRL_MASK, TAS2780_PWR_CTRL_ACTIVE);
+
+ if (ret < 0) {
+ dev_err(tas2780->dev, "%s:errCode:0x%0x:power down error\n",
+ __func__, ret);
+ goto err;
+ }
+ ret = 0;
+ regcache_cache_only(tas2780->regmap, false);
+ ret = regcache_sync(tas2780->regmap);
+err:
+ return ret;
+}
+#endif
+
+static const char * const tas2780_ASI1_src[] = {
+ "I2C offset", "Left", "Right", "LeftRightDiv2",
+};
+
+static SOC_ENUM_SINGLE_DECL(
+ tas2780_ASI1_src_enum, TAS2780_TDM_CFG2, 4, tas2780_ASI1_src);
+
+static const struct snd_kcontrol_new tas2780_asi1_mux =
+ SOC_DAPM_ENUM("ASI1 Source", tas2780_ASI1_src_enum);
+
+static const struct snd_kcontrol_new isense_switch =
+ SOC_DAPM_SINGLE("Switch", TAS2780_PWR_CTRL,
+ TAS2780_ISENSE_POWER_EN, 1, 1);
+static const struct snd_kcontrol_new vsense_switch =
+ SOC_DAPM_SINGLE("Switch", TAS2780_PWR_CTRL,
+ TAS2780_VSENSE_POWER_EN, 1, 1);
+
+static const struct snd_soc_dapm_widget tas2780_dapm_widgets[] = {
+ SND_SOC_DAPM_AIF_IN("ASI1", "ASI1 Playback", 0, SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_MUX("ASI1 Sel", SND_SOC_NOPM, 0, 0, &tas2780_asi1_mux),
+ SND_SOC_DAPM_SWITCH("ISENSE", TAS2780_PWR_CTRL,
+ TAS2780_ISENSE_POWER_EN, 1, &isense_switch),
+ SND_SOC_DAPM_SWITCH("VSENSE", TAS2780_PWR_CTRL,
+ TAS2780_VSENSE_POWER_EN, 1, &vsense_switch),
+ SND_SOC_DAPM_OUTPUT("OUT"),
+ SND_SOC_DAPM_SIGGEN("VMON"),
+ SND_SOC_DAPM_SIGGEN("IMON")
+};
+
+static const struct snd_soc_dapm_route tas2780_audio_map[] = {
+ {"ASI1 Sel", "I2C offset", "ASI1"},
+ {"ASI1 Sel", "Left", "ASI1"},
+ {"ASI1 Sel", "Right", "ASI1"},
+ {"ASI1 Sel", "LeftRightDiv2", "ASI1"},
+ {"OUT", NULL, "ASI1 Sel"},
+ {"ISENSE", "Switch", "IMON"},
+ {"VSENSE", "Switch", "VMON"},
+};
+
+static int tas2780_mute(struct snd_soc_dai *dai, int mute, int direction)
+{
+ struct snd_soc_component *component = dai->component;
+ struct tas2780_priv *tas2780 =
+ snd_soc_component_get_drvdata(component);
+ int ret = 0;
+
+ ret = snd_soc_component_update_bits(component, TAS2780_PWR_CTRL,
+ TAS2780_PWR_CTRL_MASK,
+ mute ? TAS2780_PWR_CTRL_MUTE : 0);
+ if (ret < 0) {
+ dev_err(tas2780->dev, "%s: Failed to set powercontrol\n",
+ __func__);
+ goto err;
+ }
+ ret = 0;
+err:
+ return ret;
+}
+
+static int tas2780_set_bitwidth(struct tas2780_priv *tas2780, int bitwidth)
+{
+ struct snd_soc_component *component = tas2780->component;
+ int sense_en;
+ int val;
+ int ret;
+ int slot_size;
+
+ switch (bitwidth) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ ret = snd_soc_component_update_bits(component,
+ TAS2780_TDM_CFG2,
+ TAS2780_TDM_CFG2_RXW_MASK,
+ TAS2780_TDM_CFG2_RXW_16BITS);
+ slot_size = TAS2780_TDM_CFG2_RXS_16BITS;
+ break;
+ case SNDRV_PCM_FORMAT_S24_LE:
+ ret = snd_soc_component_update_bits(component,
+ TAS2780_TDM_CFG2,
+ TAS2780_TDM_CFG2_RXW_MASK,
+ TAS2780_TDM_CFG2_RXW_24BITS);
+ slot_size = TAS2780_TDM_CFG2_RXS_24BITS;
+ break;
+ case SNDRV_PCM_FORMAT_S32_LE:
+ ret = snd_soc_component_update_bits(component,
+ TAS2780_TDM_CFG2,
+ TAS2780_TDM_CFG2_RXW_MASK,
+ TAS2780_TDM_CFG2_RXW_32BITS);
+ slot_size = TAS2780_TDM_CFG2_RXS_32BITS;
+ break;
+
+ default:
+ ret = -EINVAL;
+ }
+
+ if (ret < 0) {
+ dev_err(tas2780->dev, "%s:errCode:0x%x set bitwidth error\n",
+ __func__, ret);
+ goto err;
+ }
+
+ ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG2,
+ TAS2780_TDM_CFG2_RXS_MASK, slot_size);
+ if (ret < 0) {
+ dev_err(tas2780->dev,
+ "%s:errCode:0x%x set RX slot size error\n",
+ __func__, ret);
+ goto err;
+ }
+
+ val = snd_soc_component_read(tas2780->component, TAS2780_PWR_CTRL);
+ if (val < 0) {
+ dev_err(tas2780->dev, "%s:errCode:0x%x read PWR_CTRL error\n",
+ __func__, val);
+ ret = val;
+ goto err;
+ }
+
+ if (val & (1 << TAS2780_VSENSE_POWER_EN))
+ sense_en = 0;
+ else
+ sense_en = TAS2780_TDM_CFG5_VSNS_ENABLE;
+
+ ret = snd_soc_component_update_bits(tas2780->component,
+ TAS2780_TDM_CFG5, TAS2780_TDM_CFG5_VSNS_ENABLE, sense_en);
+ if (ret < 0) {
+ dev_err(tas2780->dev, "%s:errCode:0x%x enable vSNS error\n",
+ __func__, ret);
+ goto err;
+ }
+
+ if (val & (1 << TAS2780_ISENSE_POWER_EN))
+ sense_en = 0;
+ else
+ sense_en = TAS2780_TDM_CFG6_ISNS_ENABLE;
+
+ ret = snd_soc_component_update_bits(tas2780->component,
+ TAS2780_TDM_CFG6, TAS2780_TDM_CFG6_ISNS_ENABLE, sense_en);
+ if (ret < 0) {
+ dev_err(tas2780->dev, "%s:errCode:0x%x enable iSNS error\n",
+ __func__, ret);
+ goto err;
+ }
+ ret = 0;
+err:
+ return ret;
+}
+
+static int tas2780_set_samplerate(
+ struct tas2780_priv *tas2780, int samplerate)
+{
+ struct snd_soc_component *component = tas2780->component;
+ int ramp_rate_val;
+ int ret;
+
+ switch (samplerate) {
+ case 48000:
+ ramp_rate_val = TAS2780_TDM_CFG0_SMP_48KHZ |
+ TAS2780_TDM_CFG0_44_1_48KHZ;
+ break;
+ case 44100:
+ ramp_rate_val = TAS2780_TDM_CFG0_SMP_44_1KHZ |
+ TAS2780_TDM_CFG0_44_1_48KHZ;
+ break;
+ case 96000:
+ ramp_rate_val = TAS2780_TDM_CFG0_SMP_48KHZ |
+ TAS2780_TDM_CFG0_88_2_96KHZ;
+ break;
+ case 88200:
+ ramp_rate_val = TAS2780_TDM_CFG0_SMP_44_1KHZ |
+ TAS2780_TDM_CFG0_88_2_96KHZ;
+ break;
+ default:
+ return -EINVAL;
+ }
+ ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG0,
+ TAS2780_TDM_CFG0_SMP_MASK | TAS2780_TDM_CFG0_MASK,
+ ramp_rate_val);
+ if (ret < 0) {
+ dev_err(tas2780->dev,
+ "%s:errCode:0x%x Failed to set ramp_rate_val\n",
+ __func__, ret);
+ goto err;
+ }
+ ret = 0;
+err:
+ return ret;
+}
+
+static int tas2780_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 tas2780_priv *tas2780 =
+ snd_soc_component_get_drvdata(component);
+ int ret;
+
+ ret = tas2780_set_bitwidth(tas2780, params_format(params));
+ if (ret < 0)
+ return ret;
+
+ return tas2780_set_samplerate(tas2780, params_rate(params));
+}
+
+static int tas2780_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ struct snd_soc_component *component = dai->component;
+ struct tas2780_priv *tas2780 =
+ snd_soc_component_get_drvdata(component);
+ u8 tdm_rx_start_slot = 0, asi_cfg_1 = 0;
+ int iface;
+ int ret = 0;
+
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ asi_cfg_1 = TAS2780_TDM_CFG1_RX_RISING;
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ asi_cfg_1 = TAS2780_TDM_CFG1_RX_FALLING;
+ break;
+ default:
+ dev_err(tas2780->dev, "ASI format Inverse is not found\n");
+ return -EINVAL;
+ }
+
+ ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG1,
+ TAS2780_TDM_CFG1_RX_MASK, asi_cfg_1);
+ if (ret < 0) {
+ dev_err(tas2780->dev,
+ "%s:errCode:0x%x Failed to set asi_cfg_1\n",
+ __func__, ret);
+ goto err;
+ }
+
+ if (((fmt & SND_SOC_DAIFMT_FORMAT_MASK) == SND_SOC_DAIFMT_I2S)
+ || ((fmt & SND_SOC_DAIFMT_FORMAT_MASK)
+ == SND_SOC_DAIFMT_DSP_A)){
+ iface = TAS2780_TDM_CFG2_SCFG_I2S;
+ tdm_rx_start_slot = 1;
+ } else {
+ if (((fmt & SND_SOC_DAIFMT_FORMAT_MASK)
+ == SND_SOC_DAIFMT_DSP_B)
+ || ((fmt & SND_SOC_DAIFMT_FORMAT_MASK)
+ == SND_SOC_DAIFMT_LEFT_J)) {
+ iface = TAS2780_TDM_CFG2_SCFG_LEFT_J;
+ tdm_rx_start_slot = 0;
+ } else {
+ dev_err(tas2780->dev,
+ "%s:DAI Format is not found, fmt=0x%x\n",
+ __func__, fmt);
+ ret = -EINVAL;
+ goto err;
+ }
+ }
+ ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG1,
+ TAS2780_TDM_CFG1_MASK,
+ (tdm_rx_start_slot << TAS2780_TDM_CFG1_51_SHIFT));
+ if (ret < 0) {
+ dev_err(tas2780->dev,
+ "%s:errCode:0x%x Failed to set tdm_rx_start_slot\n",
+ __func__, ret);
+ goto err;
+ }
+
+ ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG2,
+ TAS2780_TDM_CFG2_SCFG_MASK, iface);
+ if (ret < 0) {
+ dev_err(tas2780->dev, "%s:errCode:0x%x Failed to set iface\n",
+ __func__, ret);
+ goto err;
+ }
+ ret = 0;
+err:
+ return ret;
+}
+
+static int tas2780_set_dai_tdm_slot(struct snd_soc_dai *dai,
+ unsigned int tx_mask,
+ unsigned int rx_mask,
+ int slots, int slot_width)
+{
+ struct snd_soc_component *component = dai->component;
+ struct tas2780_priv *tas2780 =
+ snd_soc_component_get_drvdata(component);
+ int left_slot, right_slot;
+ int slots_cfg;
+ int slot_size;
+ int ret = 0;
+
+ if (tx_mask == 0 || rx_mask != 0)
+ return -EINVAL;
+
+ if (slots == 1) {
+ if (tx_mask != 1)
+ return -EINVAL;
+ left_slot = 0;
+ right_slot = 0;
+ } else {
+ left_slot = __ffs(tx_mask);
+ tx_mask &= ~(1 << left_slot);
+ if (tx_mask == 0) {
+ right_slot = left_slot;
+ } else {
+ right_slot = __ffs(tx_mask);
+ tx_mask &= ~(1 << right_slot);
+ }
+ }
+
+ if (tx_mask != 0 || left_slot >= slots || right_slot >= slots)
+ return -EINVAL;
+
+ slots_cfg = (right_slot << TAS2780_TDM_CFG3_RXS_SHIFT) | left_slot;
+ ret = snd_soc_component_write(component, TAS2780_TDM_CFG3, slots_cfg);
+ if (ret) {
+ dev_err(tas2780->dev,
+ "%s:errCode:0x%x Failed to set slots_cfg\n",
+ __func__, ret);
+ goto err;
+ }
+
+ switch (slot_width) {
+ case 16:
+ slot_size = TAS2780_TDM_CFG2_RXS_16BITS;
+ break;
+ case 24:
+ slot_size = TAS2780_TDM_CFG2_RXS_24BITS;
+ break;
+ case 32:
+ slot_size = TAS2780_TDM_CFG2_RXS_32BITS;
+ break;
+ default:
+ ret = -EINVAL;
+ goto err;
+ }
+
+ ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG2,
+ TAS2780_TDM_CFG2_RXS_MASK, slot_size);
+ if (ret < 0) {
+ dev_err(tas2780->dev,
+ "%s:errCode:0x%x Failed to set slot_size\n",
+ __func__, ret);
+ goto err;
+ }
+
+ ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG5,
+ TAS2780_TDM_CFG5_50_MASK, tas2780->v_sense_slot);
+ if (ret < 0) {
+ dev_err(tas2780->dev,
+ "%s:errCode:0x%x Failed to set v_sense_slot\n",
+ __func__, ret);
+ goto err;
+ }
+
+ ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG6,
+ TAS2780_TDM_CFG6_50_MASK, tas2780->i_sense_slot);
+ if (ret < 0) {
+ dev_err(tas2780->dev,
+ "%s:errCode:0x%x Failed to set i_sense_slot\n",
+ __func__, ret);
+ goto err;
+ }
+ ret = 0;
+err:
+ return ret;
+}
+
+static const struct snd_soc_dai_ops tas2780_dai_ops = {
+ .mute_stream = tas2780_mute,
+ .hw_params = tas2780_hw_params,
+ .set_fmt = tas2780_set_fmt,
+ .set_tdm_slot = tas2780_set_dai_tdm_slot,
+ .no_capture_mute = 1,
+};
+
+#define TAS2780_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
+ SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
+
+#define TAS2780_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
+ SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_88200)
+
+static struct snd_soc_dai_driver tas2780_dai_driver[] = {
+ {
+ .name = "tas2780 ASI1",
+ .id = 0,
+ .playback = {
+ .stream_name = "ASI1 Playback",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = TAS2780_RATES,
+ .formats = TAS2780_FORMATS,
+ },
+ .capture = {
+ .stream_name = "ASI1 Capture",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = TAS2780_RATES,
+ .formats = TAS2780_FORMATS,
+ },
+ .ops = &tas2780_dai_ops,
+ .symmetric_rate = 1,
+ },
+};
+
+static int tas2780_codec_probe(struct snd_soc_component *component)
+{
+ struct tas2780_priv *tas2780 =
+ snd_soc_component_get_drvdata(component);
+ int ret = 0;
+
+ tas2780->component = component;
+
+ tas2780_reset(tas2780);
+ ret = snd_soc_component_update_bits(component,
+ TAS2780_IC_CFG, TAS2780_IC_CFG_MASK,
+ TAS2780_IC_CFG_ENABLE);
+ if (ret < 0)
+ dev_err(tas2780->dev, "%s:errCode:0x%0x\n",
+ __func__, ret);
+
+ return ret;
+}
+
+static DECLARE_TLV_DB_SCALE(tas2780_digital_tlv, 1100, 50, 0);
+static DECLARE_TLV_DB_SCALE(tas2780_playback_volume, -10000, 50, 0);
+
+static const struct snd_kcontrol_new tas2780_snd_controls[] = {
+ SOC_SINGLE_TLV("Speaker Volume", TAS2780_DVC, 0,
+ TAS2780_DVC_MAX, 1, tas2780_playback_volume),
+ SOC_SINGLE_TLV("Amp Gain Volume", TAS2780_CHNL_0, 0, 0x14, 0,
+ tas2780_digital_tlv),
+};
+
+static const struct snd_soc_component_driver soc_component_driver_tas2780 = {
+ .probe = tas2780_codec_probe,
+#ifdef CONFIG_PM
+ .suspend = tas2780_codec_suspend,
+ .resume = tas2780_codec_resume,
+#endif
+ .controls = tas2780_snd_controls,
+ .num_controls = ARRAY_SIZE(tas2780_snd_controls),
+ .dapm_widgets = tas2780_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(tas2780_dapm_widgets),
+ .dapm_routes = tas2780_audio_map,
+ .num_dapm_routes = ARRAY_SIZE(tas2780_audio_map),
+ .idle_bias_on = 1,
+ .endianness = 1,
+};
+
+static const struct reg_default tas2780_reg_defaults[] = {
+ { TAS2780_PAGE, 0x00 },
+ { TAS2780_SW_RST, 0x00 },
+ { TAS2780_PWR_CTRL, 0x1a },
+ { TAS2780_DVC, 0x00 },
+ { TAS2780_CHNL_0, 0x00 },
+ { TAS2780_TDM_CFG0, 0x09 },
+ { TAS2780_TDM_CFG1, 0x02 },
+ { TAS2780_TDM_CFG2, 0x0a },
+ { TAS2780_TDM_CFG3, 0x10 },
+ { TAS2780_TDM_CFG5, 0x42 },
+};
+
+static const struct regmap_range_cfg tas2780_regmap_ranges[] = {
+ {
+ .range_min = 0,
+ .range_max = 1 * 128,
+ .selector_reg = TAS2780_PAGE,
+ .selector_mask = 0xff,
+ .selector_shift = 0,
+ .window_start = 0,
+ .window_len = 128,
+ },
+};
+
+static const struct regmap_config tas2780_i2c_regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .reg_defaults = tas2780_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(tas2780_reg_defaults),
+ .cache_type = REGCACHE_RBTREE,
+ .ranges = tas2780_regmap_ranges,
+ .num_ranges = ARRAY_SIZE(tas2780_regmap_ranges),
+ .max_register = 1 * 128,
+};
+
+static int tas2780_parse_dt(struct device *dev, struct tas2780_priv *tas2780)
+{
+ int ret = 0;
+
+ tas2780->reset_gpio = devm_gpiod_get_optional(tas2780->dev, "reset",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(tas2780->reset_gpio)) {
+ if (PTR_ERR(tas2780->reset_gpio) == -EPROBE_DEFER) {
+ tas2780->reset_gpio = NULL;
+ return -EPROBE_DEFER;
+ }
+ }
+
+ ret = fwnode_property_read_u32(dev->fwnode, "ti,imon-slot-no",
+ &tas2780->i_sense_slot);
+ if (ret)
+ tas2780->i_sense_slot = 0;
+
+ ret = fwnode_property_read_u32(dev->fwnode, "ti,vmon-slot-no",
+ &tas2780->v_sense_slot);
+ if (ret)
+ tas2780->v_sense_slot = 2;
+
+ return 0;
+}
+
+static int tas2780_i2c_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct tas2780_priv *tas2780;
+ int result;
+
+ tas2780 = devm_kzalloc(&client->dev, sizeof(struct tas2780_priv),
+ GFP_KERNEL);
+ if (!tas2780)
+ return -ENOMEM;
+ tas2780->dev = &client->dev;
+ i2c_set_clientdata(client, tas2780);
+ dev_set_drvdata(&client->dev, tas2780);
+
+ tas2780->regmap = devm_regmap_init_i2c(client, &tas2780_i2c_regmap);
+ if (IS_ERR(tas2780->regmap)) {
+ result = PTR_ERR(tas2780->regmap);
+ dev_err(&client->dev, "Failed to allocate register map: %d\n",
+ result);
+ return result;
+ }
+
+ if (client->dev.of_node) {
+ result = tas2780_parse_dt(&client->dev, tas2780);
+ if (result) {
+ dev_err(tas2780->dev,
+ "%s: Failed to parse devicetree\n", __func__);
+ return result;
+ }
+ }
+
+ return devm_snd_soc_register_component(tas2780->dev,
+ &soc_component_driver_tas2780, tas2780_dai_driver,
+ ARRAY_SIZE(tas2780_dai_driver));
+}
+
+static const struct i2c_device_id tas2780_i2c_id[] = {
+ { "tas2780", 0},
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, tas2780_i2c_id);
+
+#if defined(CONFIG_OF)
+static const struct of_device_id tas2780_of_match[] = {
+ { .compatible = "ti,tas2780" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, tas2780_of_match);
+#endif
+
+static struct i2c_driver tas2780_i2c_driver = {
+ .driver = {
+ .name = "tas2780",
+ .of_match_table = of_match_ptr(tas2780_of_match),
+ },
+ .probe = tas2780_i2c_probe,
+ .id_table = tas2780_i2c_id,
+};
+module_i2c_driver(tas2780_i2c_driver);
+
+MODULE_AUTHOR("Raphael Xu <raphael-xu@ti.com>");
+MODULE_DESCRIPTION("TAS2780 I2C Smart Amplifier driver");
+MODULE_LICENSE("GPL");
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * TAS2780.h - ALSA SoC Texas Instruments TAS2780 Mono Audio Amplifier
+ *
+ * Copyright (C) 2020-2022 Texas Instruments Incorporated - https://www.ti.com
+ *
+ * Author: Raphael Xu <raphael-xu@ti.com>
+ */
+
+#ifndef __TAS2780_H__
+#define __TAS2780_H__
+
+/* Book Control Register */
+#define TAS2780_BOOKCTL_PAGE 0
+#define TAS2780_BOOKCTL_REG 127
+#define TAS2780_REG(page, reg) ((page * 128) + reg)
+
+/* Page */
+#define TAS2780_PAGE TAS2780_REG(0X0, 0x00)
+#define TAS2780_PAGE_PAGE_MASK 255
+
+/* Software Reset */
+#define TAS2780_SW_RST TAS2780_REG(0X0, 0x01)
+#define TAS2780_RST BIT(0)
+
+/* Power Control */
+#define TAS2780_PWR_CTRL TAS2780_REG(0X0, 0x02)
+#define TAS2780_PWR_CTRL_MASK GENMASK(1, 0)
+#define TAS2780_PWR_CTRL_ACTIVE 0x0
+#define TAS2780_PWR_CTRL_MUTE BIT(0)
+#define TAS2780_PWR_CTRL_SHUTDOWN BIT(1)
+
+#define TAS2780_VSENSE_POWER_EN 3
+#define TAS2780_ISENSE_POWER_EN 4
+
+/* Digital Volume Control */
+#define TAS2780_DVC TAS2780_REG(0X0, 0x1a)
+#define TAS2780_DVC_MAX 0xc9
+
+#define TAS2780_CHNL_0 TAS2780_REG(0X0, 0x03)
+
+/* TDM Configuration Reg0 */
+#define TAS2780_TDM_CFG0 TAS2780_REG(0X0, 0x08)
+#define TAS2780_TDM_CFG0_SMP_MASK BIT(5)
+#define TAS2780_TDM_CFG0_SMP_48KHZ 0x0
+#define TAS2780_TDM_CFG0_SMP_44_1KHZ BIT(5)
+#define TAS2780_TDM_CFG0_MASK GENMASK(3, 1)
+#define TAS2780_TDM_CFG0_44_1_48KHZ BIT(3)
+#define TAS2780_TDM_CFG0_88_2_96KHZ (BIT(3) | BIT(1))
+
+/* TDM Configuration Reg1 */
+#define TAS2780_TDM_CFG1 TAS2780_REG(0X0, 0x09)
+#define TAS2780_TDM_CFG1_MASK GENMASK(5, 1)
+#define TAS2780_TDM_CFG1_51_SHIFT 1
+#define TAS2780_TDM_CFG1_RX_MASK BIT(0)
+#define TAS2780_TDM_CFG1_RX_RISING 0x0
+#define TAS2780_TDM_CFG1_RX_FALLING BIT(0)
+
+/* TDM Configuration Reg2 */
+#define TAS2780_TDM_CFG2 TAS2780_REG(0X0, 0x0a)
+#define TAS2780_TDM_CFG2_RXW_MASK GENMASK(3, 2)
+#define TAS2780_TDM_CFG2_RXW_16BITS 0x0
+#define TAS2780_TDM_CFG2_RXW_24BITS BIT(3)
+#define TAS2780_TDM_CFG2_RXW_32BITS (BIT(3) | BIT(2))
+#define TAS2780_TDM_CFG2_RXS_MASK GENMASK(1, 0)
+#define TAS2780_TDM_CFG2_RXS_16BITS 0x0
+#define TAS2780_TDM_CFG2_RXS_24BITS BIT(0)
+#define TAS2780_TDM_CFG2_RXS_32BITS BIT(1)
+#define TAS2780_TDM_CFG2_SCFG_MASK GENMASK(5, 4)
+#define TAS2780_TDM_CFG2_SCFG_I2S 0x0
+#define TAS2780_TDM_CFG2_SCFG_LEFT_J BIT(4)
+#define TAS2780_TDM_CFG2_SCFG_RIGHT_J BIT(5)
+
+/* TDM Configuration Reg3 */
+#define TAS2780_TDM_CFG3 TAS2780_REG(0X0, 0x0c)
+#define TAS2780_TDM_CFG3_RXS_MASK GENMASK(7, 4)
+#define TAS2780_TDM_CFG3_RXS_SHIFT 0x4
+#define TAS2780_TDM_CFG3_MASK GENMASK(3, 0)
+
+/* TDM Configuration Reg4 */
+#define TAS2780_TDM_CFG4 TAS2780_REG(0X0, 0x0d)
+#define TAS2780_TDM_CFG4_TX_OFFSET_MASK GENMASK(3, 1)
+
+/* TDM Configuration Reg5 */
+#define TAS2780_TDM_CFG5 TAS2780_REG(0X0, 0x0e)
+#define TAS2780_TDM_CFG5_VSNS_MASK BIT(6)
+#define TAS2780_TDM_CFG5_VSNS_ENABLE BIT(6)
+#define TAS2780_TDM_CFG5_50_MASK GENMASK(5, 0)
+
+/* TDM Configuration Reg6 */
+#define TAS2780_TDM_CFG6 TAS2780_REG(0X0, 0x0f)
+#define TAS2780_TDM_CFG6_ISNS_MASK BIT(6)
+#define TAS2780_TDM_CFG6_ISNS_ENABLE BIT(6)
+#define TAS2780_TDM_CFG6_50_MASK GENMASK(5, 0)
+
+/* IC CFG */
+#define TAS2780_IC_CFG TAS2780_REG(0X0, 0x5c)
+#define TAS2780_IC_CFG_MASK GENMASK(7, 6)
+#define TAS2780_IC_CFG_ENABLE (BIT(7) | BIT(6))
+
+#endif /* __TAS2780_H__ */
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