[PATCH 2/2] ASoC: tas2764: Add the driver for the TAS2764

Dan Murphy
2020-09-30T16:38:43Z

Introduce the Texas Instruments TAS2764 amplifier driver
with I/V sense for loud speaker applications.

Signed-off-by: Dan Murphy <dmurphy@ti.com>
---
sound/soc/codecs/Kconfig | 5 +
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/tas2764.c | 683 +++++++++++++++++++++++++++++++++++++
sound/soc/codecs/tas2764.h | 88 +++++
4 files changed, 778 insertions(+)
create mode 100644 sound/soc/codecs/tas2764.c
create mode 100644 sound/soc/codecs/tas2764.h

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index a62e0fb467d9..34c6dd04b85a 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -195,6 +195,7 @@ config SND_SOC_ALL_CODECS
imply SND_SOC_STI_SAS
imply SND_SOC_TAS2552
imply SND_SOC_TAS2562
+ imply SND_SOC_TAS2764
imply SND_SOC_TAS2770
imply SND_SOC_TAS5086
imply SND_SOC_TAS571X
@@ -1303,6 +1304,10 @@ config SND_SOC_TAS2562
tristate "Texas Instruments TAS2562 Mono Audio amplifier"
depends on I2C

+config SND_SOC_TAS2764
+ tristate "Texas Instruments TAS2764 Mono Audio amplifier"
+ depends on I2C
+
config SND_SOC_TAS2770
tristate "Texas Instruments TAS2770 speaker amplifier"
depends on I2C
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 0404bc1ddcfb..11ce98c25d6c 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -304,6 +304,7 @@ snd-soc-simple-amplifier-objs := simple-amplifier.o
snd-soc-tpa6130a2-objs := tpa6130a2.o
snd-soc-tas2552-objs := tas2552.o
snd-soc-tas2562-objs := tas2562.o
+snd-soc-tas2764-objs := tas2764.o

obj-$(CONFIG_SND_SOC_88PM860X) += snd-soc-88pm860x.o
obj-$(CONFIG_SND_SOC_AB8500_CODEC) += snd-soc-ab8500-codec.o
@@ -517,6 +518,7 @@ obj-$(CONFIG_SND_SOC_STAC9766) += snd-soc-stac9766.o
obj-$(CONFIG_SND_SOC_STI_SAS) += snd-soc-sti-sas.o
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_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/tas2764.c b/sound/soc/codecs/tas2764.c
new file mode 100644
index 000000000000..5c34ed4809f9
--- /dev/null
+++ b/sound/soc/codecs/tas2764.c
@@ -0,0 +1,683 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Driver for the Texas Instruments TAS2764 CODEC
+// Copyright (C) 2020 Texas Instruments Inc.
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/i2c.h>
+#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.h>
+#include <linux/regmap.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/slab.h>
+#include <sound/soc.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/initval.h>
+#include <sound/tlv.h>
+
+#include "tas2764.h"
+
+struct tas2764_priv {
+ struct snd_soc_component *component;
+ struct gpio_desc *reset_gpio;
+ struct gpio_desc *sdz_gpio;
+ struct regmap *regmap;
+ struct device *dev;
+
+ int v_sense_slot;
+ int i_sense_slot;
+};
+
+static void tas2764_reset(struct tas2764_priv *tas2764)
+{
+ if (tas2764->reset_gpio) {
+ gpiod_set_value_cansleep(tas2764->reset_gpio, 0);
+ msleep(20);
+ gpiod_set_value_cansleep(tas2764->reset_gpio, 1);
+ }
+
+ snd_soc_component_write(tas2764->component, TAS2764_SW_RST,
+ TAS2764_RST);
+}
+
+static int tas2764_set_bias_level(struct snd_soc_component *component,
+ enum snd_soc_bias_level level)
+{
+ struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
+
+ switch (level) {
+ case SND_SOC_BIAS_ON:
+ snd_soc_component_update_bits(component, TAS2764_PWR_CTRL,
+ TAS2764_PWR_CTRL_MASK,
+ TAS2764_PWR_CTRL_ACTIVE);
+ break;
+ case SND_SOC_BIAS_STANDBY:
+ case SND_SOC_BIAS_PREPARE:
+ snd_soc_component_update_bits(component, TAS2764_PWR_CTRL,
+ TAS2764_PWR_CTRL_MASK,
+ TAS2764_PWR_CTRL_MUTE);
+ break;
+ case SND_SOC_BIAS_OFF:
+ snd_soc_component_update_bits(component, TAS2764_PWR_CTRL,
+ TAS2764_PWR_CTRL_MASK,
+ TAS2764_PWR_CTRL_SHUTDOWN);
+ break;
+
+ default:
+ dev_err(tas2764->dev,
+ "wrong power level setting %d\n", level);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int tas2764_codec_suspend(struct snd_soc_component *component)
+{
+ struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
+ int ret;
+
+ ret = snd_soc_component_update_bits(component, TAS2764_PWR_CTRL,
+ TAS2764_PWR_CTRL_MASK,
+ TAS2764_PWR_CTRL_SHUTDOWN);
+
+ if (ret < 0)
+ return ret;
+
+ if (tas2764->sdz_gpio)
+ gpiod_set_value_cansleep(tas2764->sdz_gpio, 0);
+
+ regcache_cache_only(tas2764->regmap, true);
+ regcache_mark_dirty(tas2764->regmap);
+
+ return 0;
+}
+
+static int tas2764_codec_resume(struct snd_soc_component *component)
+{
+ struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
+ int ret;
+
+ if (tas2764->sdz_gpio)
+ gpiod_set_value_cansleep(tas2764->sdz_gpio, 1);
+
+ ret = snd_soc_component_update_bits(component, TAS2764_PWR_CTRL,
+ TAS2764_PWR_CTRL_MASK,
+ TAS2764_PWR_CTRL_ACTIVE);
+
+ if (ret < 0)
+ return ret;
+
+ regcache_cache_only(tas2764->regmap, false);
+
+ return regcache_sync(tas2764->regmap);
+}
+#else
+#define tas2764_codec_suspend NULL
+#define tas2764_codec_resume NULL
+#endif
+
+static const char * const tas2764_ASI1_src[] = {
+ "I2C offset", "Left", "Right", "LeftRightDiv2",
+};
+
+static SOC_ENUM_SINGLE_DECL(
+ tas2764_ASI1_src_enum, TAS2764_TDM_CFG2, 4, tas2764_ASI1_src);
+
+static const struct snd_kcontrol_new tas2764_asi1_mux =
+ SOC_DAPM_ENUM("ASI1 Source", tas2764_ASI1_src_enum);
+
+static int tas2764_dac_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
+ struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
+ int ret;
+
+ switch (event) {
+ case SND_SOC_DAPM_POST_PMU:
+ ret = snd_soc_component_update_bits(component, TAS2764_PWR_CTRL,
+ TAS2764_PWR_CTRL_MASK,
+ TAS2764_PWR_CTRL_MUTE);
+ break;
+ case SND_SOC_DAPM_PRE_PMD:
+ ret = snd_soc_component_update_bits(component, TAS2764_PWR_CTRL,
+ TAS2764_PWR_CTRL_MASK,
+ TAS2764_PWR_CTRL_SHUTDOWN);
+ break;
+ default:
+ dev_err(tas2764->dev, "Not supported evevt\n");
+ return -EINVAL;
+ }
+
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static const struct snd_kcontrol_new isense_switch =
+ SOC_DAPM_SINGLE("Switch", TAS2764_PWR_CTRL, TAS2764_ISENSE_POWER_EN, 1, 1);
+static const struct snd_kcontrol_new vsense_switch =
+ SOC_DAPM_SINGLE("Switch", TAS2764_PWR_CTRL, TAS2764_VSENSE_POWER_EN, 1, 1);
+
+static const struct snd_soc_dapm_widget tas2764_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, &tas2764_asi1_mux),
+ SND_SOC_DAPM_SWITCH("ISENSE", TAS2764_PWR_CTRL, TAS2764_ISENSE_POWER_EN,
+ 1, &isense_switch),
+ SND_SOC_DAPM_SWITCH("VSENSE", TAS2764_PWR_CTRL, TAS2764_VSENSE_POWER_EN,
+ 1, &vsense_switch),
+ SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas2764_dac_event,
+ SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
+ SND_SOC_DAPM_OUTPUT("OUT"),
+ SND_SOC_DAPM_SIGGEN("VMON"),
+ SND_SOC_DAPM_SIGGEN("IMON")
+};
+
+static const struct snd_soc_dapm_route tas2764_audio_map[] = {
+ {"ASI1 Sel", "I2C offset", "ASI1"},
+ {"ASI1 Sel", "Left", "ASI1"},
+ {"ASI1 Sel", "Right", "ASI1"},
+ {"ASI1 Sel", "LeftRightDiv2", "ASI1"},
+ {"DAC", NULL, "ASI1 Sel"},
+ {"OUT", NULL, "DAC"},
+ {"ISENSE", "Switch", "IMON"},
+ {"VSENSE", "Switch", "VMON"},
+};
+
+static int tas2764_mute(struct snd_soc_dai *dai, int mute, int direction)
+{
+ struct snd_soc_component *component = dai->component;
+ int ret = snd_soc_component_update_bits(component, TAS2764_PWR_CTRL,
+ TAS2764_PWR_CTRL_MASK,
+ mute ? TAS2764_PWR_CTRL_MUTE : 0);
+
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int tas2764_set_bitwidth(struct tas2764_priv *tas2764, int bitwidth)
+{
+ struct snd_soc_component *component = tas2764->component;
+ int sense_en;
+ int val;
+ int ret;
+
+ switch (bitwidth) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ ret = snd_soc_component_update_bits(component,
+ TAS2764_TDM_CFG2,
+ TAS2764_TDM_CFG2_RXW_MASK,
+ TAS2764_TDM_CFG2_RXW_16BITS);
+ break;
+ case SNDRV_PCM_FORMAT_S24_LE:
+ ret = snd_soc_component_update_bits(component,
+ TAS2764_TDM_CFG2,
+ TAS2764_TDM_CFG2_RXW_MASK,
+ TAS2764_TDM_CFG2_RXW_24BITS);
+ break;
+ case SNDRV_PCM_FORMAT_S32_LE:
+ ret = snd_soc_component_update_bits(component,
+ TAS2764_TDM_CFG2,
+ TAS2764_TDM_CFG2_RXW_MASK,
+ TAS2764_TDM_CFG2_RXW_32BITS);
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ if (ret < 0)
+ return ret;
+
+ val = snd_soc_component_read(tas2764->component, TAS2764_PWR_CTRL);
+ if (val < 0)
+ return val;
+
+ if (val & (1 << TAS2764_VSENSE_POWER_EN))
+ sense_en = 0;
+ else
+ sense_en = TAS2764_TDM_CFG5_VSNS_ENABLE;
+
+ ret = snd_soc_component_update_bits(tas2764->component, TAS2764_TDM_CFG5,
+ TAS2764_TDM_CFG5_VSNS_ENABLE,
+ sense_en);
+ if (ret < 0)
+ return ret;
+
+ if (val & (1 << TAS2764_ISENSE_POWER_EN))
+ sense_en = 0;
+ else
+ sense_en = TAS2764_TDM_CFG6_ISNS_ENABLE;
+
+ ret = snd_soc_component_update_bits(tas2764->component, TAS2764_TDM_CFG6,
+ TAS2764_TDM_CFG6_ISNS_ENABLE,
+ sense_en);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int tas2764_set_samplerate(struct tas2764_priv *tas2764, int samplerate)
+{
+ struct snd_soc_component *component = tas2764->component;
+ int ramp_rate_val;
+ int ret;
+
+ switch (samplerate) {
+ case 48000:
+ ramp_rate_val = TAS2764_TDM_CFG0_SMP_48KHZ |
+ TAS2764_TDM_CFG0_44_1_48KHZ;
+ break;
+ case 44100:
+ ramp_rate_val = TAS2764_TDM_CFG0_SMP_44_1KHZ |
+ TAS2764_TDM_CFG0_44_1_48KHZ;
+ break;
+ case 96000:
+ ramp_rate_val = TAS2764_TDM_CFG0_SMP_48KHZ |
+ TAS2764_TDM_CFG0_88_2_96KHZ;
+ break;
+ case 88200:
+ ramp_rate_val = TAS2764_TDM_CFG0_SMP_44_1KHZ |
+ TAS2764_TDM_CFG0_88_2_96KHZ;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG0,
+ TAS2764_TDM_CFG0_SMP_MASK |
+ TAS2764_TDM_CFG0_MASK,
+ ramp_rate_val);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int tas2764_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 tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
+ int ret;
+
+ ret = tas2764_set_bitwidth(tas2764, params_format(params));
+ if (ret < 0)
+ return ret;
+
+ return tas2764_set_samplerate(tas2764, params_rate(params));
+}
+
+static int tas2764_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ struct snd_soc_component *component = dai->component;
+ struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
+ u8 tdm_rx_start_slot = 0, asi_cfg_1 = 0;
+ int ret;
+
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ asi_cfg_1 = TAS2764_TDM_CFG1_RX_RISING;
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ asi_cfg_1 = TAS2764_TDM_CFG1_RX_FALLING;
+ break;
+ default:
+ dev_err(tas2764->dev, "ASI format Inverse is not found\n");
+ return -EINVAL;
+ }
+
+ ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG1,
+ TAS2764_TDM_CFG1_RX_MASK,
+ asi_cfg_1);
+ if (ret < 0)
+ return ret;
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ case SND_SOC_DAIFMT_DSP_A:
+ tdm_rx_start_slot = 1;
+ break;
+ case SND_SOC_DAIFMT_DSP_B:
+ case SND_SOC_DAIFMT_LEFT_J:
+ tdm_rx_start_slot = 0;
+ break;
+ default:
+ dev_err(tas2764->dev,
+ "DAI Format is not found, fmt=0x%x\n", fmt);
+ return -EINVAL;
+ }
+
+ ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG1,
+ TAS2764_TDM_CFG1_MASK,
+ (tdm_rx_start_slot << TAS2764_TDM_CFG1_51_SHIFT));
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int tas2764_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 tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
+ int left_slot, right_slot;
+ int slots_cfg;
+ int slot_size;
+ int ret;
+
+ 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 << TAS2764_TDM_CFG3_RXS_SHIFT) | left_slot;
+
+ ret = snd_soc_component_write(component, TAS2764_TDM_CFG3, slots_cfg);
+ if (ret)
+ return ret;
+
+ switch (slot_width) {
+ case 16:
+ slot_size = TAS2764_TDM_CFG2_RXS_16BITS;
+ break;
+ case 24:
+ slot_size = TAS2764_TDM_CFG2_RXS_24BITS;
+ break;
+ case 32:
+ slot_size = TAS2764_TDM_CFG2_RXS_32BITS;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG2,
+ TAS2764_TDM_CFG2_RXS_MASK,
+ slot_size);
+ if (ret < 0)
+ return ret;
+
+ ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG5,
+ TAS2764_TDM_CFG5_50_MASK,
+ tas2764->v_sense_slot);
+ if (ret < 0)
+ return ret;
+
+ ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG6,
+ TAS2764_TDM_CFG6_50_MASK,
+ tas2764->i_sense_slot);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static struct snd_soc_dai_ops tas2764_dai_ops = {
+ .mute_stream = tas2764_mute,
+ .hw_params = tas2764_hw_params,
+ .set_fmt = tas2764_set_fmt,
+ .set_tdm_slot = tas2764_set_dai_tdm_slot,
+ .no_capture_mute = 1,
+};
+
+#define TAS2764_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
+ SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
+
+#define TAS2764_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
+ SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_88200)
+
+static struct snd_soc_dai_driver tas2764_dai_driver[] = {
+ {
+ .name = "tas2764 ASI1",
+ .id = 0,
+ .playback = {
+ .stream_name = "ASI1 Playback",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = TAS2764_RATES,
+ .formats = TAS2764_FORMATS,
+ },
+ .capture = {
+ .stream_name = "ASI1 Capture",
+ .channels_min = 0,
+ .channels_max = 2,
+ .rates = TAS2764_RATES,
+ .formats = TAS2764_FORMATS,
+ },
+ .ops = &tas2764_dai_ops,
+ .symmetric_rates = 1,
+ },
+};
+
+static int tas2764_codec_probe(struct snd_soc_component *component)
+{
+ struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
+ int ret;
+
+ tas2764->component = component;
+
+ if (tas2764->sdz_gpio)
+ gpiod_set_value_cansleep(tas2764->sdz_gpio, 1);
+
+ tas2764_reset(tas2764);
+
+ ret = snd_soc_component_update_bits(tas2764->component, TAS2764_TDM_CFG5,
+ TAS2764_TDM_CFG5_VSNS_ENABLE, 0);
+ if (ret < 0)
+ return ret;
+
+ ret = snd_soc_component_update_bits(tas2764->component, TAS2764_TDM_CFG6,
+ TAS2764_TDM_CFG6_ISNS_ENABLE, 0);
+ if (ret < 0)
+ return ret;
+
+ ret = snd_soc_component_update_bits(component, TAS2764_PWR_CTRL,
+ TAS2764_PWR_CTRL_MASK,
+ TAS2764_PWR_CTRL_MUTE);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static DECLARE_TLV_DB_SCALE(tas2764_digital_tlv, 1100, 50, 0);
+static DECLARE_TLV_DB_SCALE(tas2764_playback_volume, -10000, 50, 0);
+
+static const struct snd_kcontrol_new tas2764_snd_controls[] = {
+ SOC_SINGLE_TLV("Speaker Volume", TAS2764_DVC, 0,
+ TAS2764_DVC_MAX, 1, tas2764_playback_volume),
+ SOC_SINGLE_TLV("Amp Gain Volume", TAS2764_CHNL_0, 0, 0x14, 0,
+ tas2764_digital_tlv),
+};
+
+static const struct snd_soc_component_driver soc_component_driver_tas2764 = {
+ .probe = tas2764_codec_probe,
+ .suspend = tas2764_codec_suspend,
+ .resume = tas2764_codec_resume,
+ .set_bias_level = tas2764_set_bias_level,
+ .controls = tas2764_snd_controls,
+ .num_controls = ARRAY_SIZE(tas2764_snd_controls),
+ .dapm_widgets = tas2764_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(tas2764_dapm_widgets),
+ .dapm_routes = tas2764_audio_map,
+ .num_dapm_routes = ARRAY_SIZE(tas2764_audio_map),
+ .idle_bias_on = 1,
+ .endianness = 1,
+ .non_legacy_dai_naming = 1,
+};
+
+static int tas2764_register_codec(struct tas2764_priv *tas2764)
+{
+ return devm_snd_soc_register_component(tas2764->dev,
+ &soc_component_driver_tas2764,
+ tas2764_dai_driver,
+ ARRAY_SIZE(tas2764_dai_driver));
+}
+
+static const struct reg_default tas2764_reg_defaults[] = {
+ { TAS2764_PAGE, 0x00 },
+ { TAS2764_SW_RST, 0x00 },
+ { TAS2764_PWR_CTRL, 0x1a },
+ { TAS2764_DVC, 0x00 },
+ { TAS2764_CHNL_0, 0x00 },
+ { TAS2764_TDM_CFG0, 0x09 },
+ { TAS2764_TDM_CFG1, 0x02 },
+ { TAS2764_TDM_CFG2, 0x0a },
+ { TAS2764_TDM_CFG3, 0x10 },
+ { TAS2764_TDM_CFG5, 0x42 },
+};
+
+static const struct regmap_range_cfg tas2764_regmap_ranges[] = {
+ {
+ .range_min = 0,
+ .range_max = 1 * 128,
+ .selector_reg = TAS2764_PAGE,
+ .selector_mask = 0xff,
+ .selector_shift = 0,
+ .window_start = 0,
+ .window_len = 128,
+ },
+};
+
+static const struct regmap_config tas2764_i2c_regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .reg_defaults = tas2764_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(tas2764_reg_defaults),
+ .cache_type = REGCACHE_RBTREE,
+ .ranges = tas2764_regmap_ranges,
+ .num_ranges = ARRAY_SIZE(tas2764_regmap_ranges),
+ .max_register = 1 * 128,
+};
+
+static int tas2764_parse_dt(struct device *dev, struct tas2764_priv *tas2764)
+{
+ int ret = 0;
+
+ tas2764->reset_gpio = devm_gpiod_get_optional(tas2764->dev, "reset",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(tas2764->reset_gpio)) {
+ if (PTR_ERR(tas2764->reset_gpio) == -EPROBE_DEFER) {
+ tas2764->reset_gpio = NULL;
+ return -EPROBE_DEFER;
+ }
+ }
+
+ tas2764->sdz_gpio = devm_gpiod_get_optional(dev, "shutdown", GPIOD_OUT_HIGH);
+ if (IS_ERR(tas2764->sdz_gpio)) {
+ if (PTR_ERR(tas2764->sdz_gpio) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+
+ tas2764->sdz_gpio = NULL;
+ }
+
+ ret = fwnode_property_read_u32(dev->fwnode, "ti,imon-slot-no",
+ &tas2764->i_sense_slot);
+ if (ret)
+ tas2764->i_sense_slot = 0;
+
+ ret = fwnode_property_read_u32(dev->fwnode, "ti,vmon-slot-no",
+ &tas2764->v_sense_slot);
+ if (ret)
+ tas2764->v_sense_slot = 2;
+
+ return 0;
+}
+
+static int tas2764_i2c_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct tas2764_priv *tas2764;
+ int result;
+
+ tas2764 = devm_kzalloc(&client->dev, sizeof(struct tas2764_priv),
+ GFP_KERNEL);
+ if (!tas2764)
+ return -ENOMEM;
+
+ tas2764->dev = &client->dev;
+ i2c_set_clientdata(client, tas2764);
+ dev_set_drvdata(&client->dev, tas2764);
+
+ tas2764->regmap = devm_regmap_init_i2c(client, &tas2764_i2c_regmap);
+ if (IS_ERR(tas2764->regmap)) {
+ result = PTR_ERR(tas2764->regmap);
+ dev_err(&client->dev, "Failed to allocate register map: %d\n",
+ result);
+ return result;
+ }
+
+ if (client->dev.of_node) {
+ result = tas2764_parse_dt(&client->dev, tas2764);
+ if (result) {
+ dev_err(tas2764->dev, "%s: Failed to parse devicetree\n",
+ __func__);
+ return result;
+ }
+ }
+
+ return tas2764_register_codec(tas2764);
+}
+
+static const struct i2c_device_id tas2764_i2c_id[] = {
+ { "tas2764", 0},
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, tas2764_i2c_id);
+
+#if defined(CONFIG_OF)
+static const struct of_device_id tas2764_of_match[] = {
+ { .compatible = "ti,tas2764" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, tas2764_of_match);
+#endif
+
+static struct i2c_driver tas2764_i2c_driver = {
+ .driver = {
+ .name = "tas2764",
+ .of_match_table = of_match_ptr(tas2764_of_match),
+ },
+ .probe = tas2764_i2c_probe,
+ .id_table = tas2764_i2c_id,
+};
+module_i2c_driver(tas2764_i2c_driver);
+
+MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>");
+MODULE_DESCRIPTION("TAS2764 I2C Smart Amplifier driver");
+MODULE_LICENSE("GPL v2");
diff --git a/sound/soc/codecs/tas2764.h b/sound/soc/codecs/tas2764.h
new file mode 100644
index 000000000000..8cdb035ca074
--- /dev/null
+++ b/sound/soc/codecs/tas2764.h
@@ -0,0 +1,88 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * tas2764.h - ALSA SoC Texas Instruments TAS2764 Mono Audio Amplifier
+ *
+ * Copyright (C) 2020 Texas Instruments Incorporated - https://www.ti.com
+ *
+ * Author: Dan Murphy <dmurphy@ti.com>
+ */
+
+#ifndef __TAS2764__
+#define __TAS2764__
+
+/* Book Control Register */
+#define TAS2764_BOOKCTL_PAGE 0
+#define TAS2764_BOOKCTL_REG 127
+#define TAS2764_REG(page, reg) ((page * 128) + reg)
+
+/* Page */
+#define TAS2764_PAGE TAS2764_REG(0X0, 0x00)
+#define TAS2764_PAGE_PAGE_MASK 255
+
+/* Software Reset */
+#define TAS2764_SW_RST TAS2764_REG(0X0, 0x01)
+#define TAS2764_RST BIT(0)
+
+/* Power Control */
+#define TAS2764_PWR_CTRL TAS2764_REG(0X0, 0x02)
+#define TAS2764_PWR_CTRL_MASK GENMASK(1, 0)
+#define TAS2764_PWR_CTRL_ACTIVE 0x0
+#define TAS2764_PWR_CTRL_MUTE BIT(0)
+#define TAS2764_PWR_CTRL_SHUTDOWN BIT(1)
+
+#define TAS2764_VSENSE_POWER_EN 3
+#define TAS2764_ISENSE_POWER_EN 4
+
+/* Digital Volume Control */
+#define TAS2764_DVC TAS2764_REG(0X0, 0x1a)
+#define TAS2764_DVC_MAX 0xc9
+
+#define TAS2764_CHNL_0 TAS2764_REG(0X0, 0x03)
+
+/* TDM Configuration Reg0 */
+#define TAS2764_TDM_CFG0 TAS2764_REG(0X0, 0x08)
+#define TAS2764_TDM_CFG0_SMP_MASK BIT(5)
+#define TAS2764_TDM_CFG0_SMP_48KHZ 0x0
+#define TAS2764_TDM_CFG0_SMP_44_1KHZ BIT(5)
+#define TAS2764_TDM_CFG0_MASK GENMASK(3, 1)
+#define TAS2764_TDM_CFG0_44_1_48KHZ BIT(3)
+#define TAS2764_TDM_CFG0_88_2_96KHZ (BIT(3) | BIT(1))
+
+/* TDM Configuration Reg1 */
+#define TAS2764_TDM_CFG1 TAS2764_REG(0X0, 0x09)
+#define TAS2764_TDM_CFG1_MASK GENMASK(5, 1)
+#define TAS2764_TDM_CFG1_51_SHIFT 1
+#define TAS2764_TDM_CFG1_RX_MASK BIT(0)
+#define TAS2764_TDM_CFG1_RX_RISING 0x0
+#define TAS2764_TDM_CFG1_RX_FALLING BIT(0)
+
+/* TDM Configuration Reg2 */
+#define TAS2764_TDM_CFG2 TAS2764_REG(0X0, 0x0a)
+#define TAS2764_TDM_CFG2_RXW_MASK GENMASK(3, 2)
+#define TAS2764_TDM_CFG2_RXW_16BITS 0x0
+#define TAS2764_TDM_CFG2_RXW_24BITS BIT(3)
+#define TAS2764_TDM_CFG2_RXW_32BITS (BIT(3) | BIT(2))
+#define TAS2764_TDM_CFG2_RXS_MASK GENMASK(1, 0)
+#define TAS2764_TDM_CFG2_RXS_16BITS 0x0
+#define TAS2764_TDM_CFG2_RXS_24BITS BIT(0)
+#define TAS2764_TDM_CFG2_RXS_32BITS BIT(1)
+
+/* TDM Configuration Reg3 */
+#define TAS2764_TDM_CFG3 TAS2764_REG(0X0, 0x0c)
+#define TAS2764_TDM_CFG3_RXS_MASK GENMASK(7, 4)
+#define TAS2764_TDM_CFG3_RXS_SHIFT 0x4
+#define TAS2764_TDM_CFG3_MASK GENMASK(3, 0)
+
+/* TDM Configuration Reg5 */
+#define TAS2764_TDM_CFG5 TAS2764_REG(0X0, 0x0e)
+#define TAS2764_TDM_CFG5_VSNS_MASK BIT(6)
+#define TAS2764_TDM_CFG5_VSNS_ENABLE BIT(6)
+#define TAS2764_TDM_CFG5_50_MASK GENMASK(5, 0)
+
+/* TDM Configuration Reg6 */
+#define TAS2764_TDM_CFG6 TAS2764_REG(0X0, 0x0f)
+#define TAS2764_TDM_CFG6_ISNS_MASK BIT(6)
+#define TAS2764_TDM_CFG6_ISNS_ENABLE BIT(6)
+#define TAS2764_TDM_CFG6_50_MASK GENMASK(5, 0)
+
+#endif /* __TAS2764__ */
--
2.28.0.585.ge1cfff676549