From: Frank Shi <shifu0...@thundersoft.com>

add tas2770 smart PA kernel driver

Signed-off-by: Frank Shi <shifu0...@thundersoft.com>
---
 sound/soc/codecs/Kconfig   |   5 +
 sound/soc/codecs/Makefile  |   2 +
 sound/soc/codecs/tas2770.c | 954 +++++++++++++++++++++++++++++++++++++++++++++
 sound/soc/codecs/tas2770.h | 166 ++++++++
 4 files changed, 1127 insertions(+)
 create mode 100644 sound/soc/codecs/tas2770.c
 create mode 100644 sound/soc/codecs/tas2770.h

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 8f3e787..cc92da3 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -111,6 +111,7 @@ config SND_SOC_ALL_CODECS
        select SND_SOC_STAC9766 if SND_SOC_AC97_BUS
        select SND_SOC_STI_SAS
        select SND_SOC_TAS2552 if I2C
+       select SND_SOC_TAS2770 if I2C
        select SND_SOC_TAS5086 if I2C
        select SND_SOC_TAS571X if I2C
        select SND_SOC_TFA9879 if I2C
@@ -652,6 +653,10 @@ config SND_SOC_TAS2552
        tristate "Texas Instruments TAS2552 Mono Audio amplifier"
        depends on I2C
 
+config SND_SOC_TAS2770
+       tristate "Texas Instruments TAS2770 speaker amplifier"
+       depends on I2C
+
 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 5305cc6..63b8488 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -116,6 +116,7 @@ snd-soc-stac9766-objs := stac9766.o
 snd-soc-sti-sas-objs := sti-sas.o
 snd-soc-tas5086-objs := tas5086.o
 snd-soc-tas571x-objs := tas571x.o
+snd-soc-tas2770-objs := tas2770.o
 snd-soc-tfa9879-objs := tfa9879.o
 snd-soc-tlv320aic23-objs := tlv320aic23.o
 snd-soc-tlv320aic23-i2c-objs := tlv320aic23-i2c.o
@@ -332,6 +333,7 @@ obj-$(CONFIG_SND_SOC_STI_SAS)       += snd-soc-sti-sas.o
 obj-$(CONFIG_SND_SOC_TAS2552)  += snd-soc-tas2552.o
 obj-$(CONFIG_SND_SOC_TAS5086)  += snd-soc-tas5086.o
 obj-$(CONFIG_SND_SOC_TAS571X)  += snd-soc-tas571x.o
+obj-$(CONFIG_SND_SOC_TAS2770) += snd-soc-tas2770.o
 obj-$(CONFIG_SND_SOC_TFA9879)  += snd-soc-tfa9879.o
 obj-$(CONFIG_SND_SOC_TLV320AIC23)      += snd-soc-tlv320aic23.o
 obj-$(CONFIG_SND_SOC_TLV320AIC23_I2C)  += snd-soc-tlv320aic23-i2c.o
diff --git a/sound/soc/codecs/tas2770.c b/sound/soc/codecs/tas2770.c
new file mode 100644
index 0000000..cc1481f
--- /dev/null
+++ b/sound/soc/codecs/tas2770.c
@@ -0,0 +1,954 @@
+/*
+ * SPDX-License-Identifier: GPL-2.0
+ *
+ * ALSA SoC Texas Instruments TAS2770 20-W Digital Input Mono Class-D
+ * Audio Amplifier with Speaker I/V Sense
+ *
+ * Copyright (C) 2016-2017 Texas Instruments Incorporated - http://www.ti.com/
+ *     Author: Tracy Yi <tracy...@ti.com>
+ *     Shi Fu <shifu0...@thundersoft.com>
+ */
+
+#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/pm_runtime.h>
+#include <linux/regulator/consumer.h>
+#include <linux/firmware.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 "tas2770.h"
+
+#define TAS2770_MDELAY 0xFFFFFFFE
+#define TAS2770_CHECK_PERIOD   5000    /* 5 second */
+
+static void tas2770_reset(struct tas2770_priv *tas2770)
+{
+       if (tas2770->reset_gpio) {
+               gpiod_set_value_cansleep(tas2770->reset_gpio, 0);
+               msleep(20);
+               gpiod_set_value_cansleep(tas2770->reset_gpio, 1);
+       }
+       snd_soc_component_write(tas2770->component, TAS2770_SW_RST,
+               TAS2770_RST);
+}
+
+static int tas2770_regmap_read(struct tas2770_priv *tas2770,
+                       unsigned int reg, unsigned int *value)
+{
+       int result = 0;
+       int retry_count = TAS2770_I2C_RETRY_COUNT;
+
+       while (retry_count--) {
+               result = snd_soc_component_read(tas2770->component, reg,
+                       value);
+               if (!result)
+                       break;
+
+               msleep(20);
+       }
+       if (!retry_count)
+               return -ETIMEDOUT;
+
+       return 0;
+}
+
+static int tas2770_set_bias_level(struct snd_soc_component *component,
+                                enum snd_soc_bias_level level)
+{
+       struct tas2770_priv *tas2770 =
+                       snd_soc_component_get_drvdata(component);
+
+       switch (level) {
+       case SND_SOC_BIAS_ON:
+               break;
+
+       case SND_SOC_BIAS_STANDBY:
+               snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
+                       TAS2770_PWR_CTRL_MASK,
+                       TAS2770_PWR_CTRL_ACTIVE);
+               tas2770->power_state = SND_SOC_BIAS_STANDBY;
+               break;
+
+       case SND_SOC_BIAS_PREPARE:
+               snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
+                       TAS2770_PWR_CTRL_MASK,
+                       TAS2770_PWR_CTRL_MUTE);
+               tas2770->power_state = SND_SOC_BIAS_PREPARE;
+               break;
+
+       case SND_SOC_BIAS_OFF:
+               snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
+                       TAS2770_PWR_CTRL_MASK,
+                       TAS2770_PWR_CTRL_SHUTDOWN);
+               tas2770->power_state = SND_SOC_BIAS_OFF;
+               break;
+
+       default:
+               dev_err(tas2770->dev,
+                               "wrong power level setting %d\n", level);
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+#ifdef CONFIG_PM
+static int tas2770_codec_suspend(struct snd_soc_component *component)
+{
+       int ret;
+
+       ret = tas2770_set_bias_level(component, SND_SOC_BIAS_OFF);
+       if (ret)
+               return -EINVAL;
+
+       return 0;
+}
+
+static int tas2770_codec_resume(struct snd_soc_component *component)
+{
+       int ret;
+
+       ret = tas2770_set_bias_level(component, SND_SOC_BIAS_STANDBY);
+       if (ret)
+               return -EINVAL;
+
+       return 0;
+}
+#else
+#define tas2770_codec_suspend NULL
+#define tas2770_codec_resume NULL
+#endif
+
+static const char * const tas2770_ASI1_src[] = {
+       "I2C offset", "Left", "Right", "LeftRightDiv2",
+};
+
+static SOC_ENUM_SINGLE_DECL(
+       tas2770_ASI1_src_enum, TAS2770_TDM_CFG_REG2,
+       4, tas2770_ASI1_src);
+
+static const struct snd_kcontrol_new tas2770_asi1_mux =
+       SOC_DAPM_ENUM("ASI1 Source", tas2770_ASI1_src_enum);
+
+static int tas2770_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 tas2770_priv *tas2770 =
+                       snd_soc_component_get_drvdata(component);
+       int ret;
+
+       switch (event) {
+       case SND_SOC_DAPM_POST_PMU:
+               ret = tas2770_set_bias_level(component,
+                       SND_SOC_BIAS_PREPARE);
+               if (ret)
+                       goto end;
+               break;
+       case SND_SOC_DAPM_PRE_PMD:
+               ret = tas2770_set_bias_level(component,
+                       SND_SOC_BIAS_OFF);
+               if (ret)
+                       goto end;
+               break;
+       default:
+               dev_err(tas2770->dev, "Not supported evevt\n");
+               return -EINVAL;
+       }
+
+end:
+       return ret;
+}
+
+static const struct snd_kcontrol_new isense_switch =
+       SOC_DAPM_SINGLE("Switch", TAS2770_PWR_CTRL, 3, 1, 1);
+static const struct snd_kcontrol_new vsense_switch =
+       SOC_DAPM_SINGLE("Switch", TAS2770_PWR_CTRL, 2, 1, 1);
+
+static const struct snd_soc_dapm_widget tas2770_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,
+                               &tas2770_asi1_mux),
+       SND_SOC_DAPM_SWITCH("ISENSE", TAS2770_PWR_CTRL, 3, 1,
+                       &isense_switch),
+       SND_SOC_DAPM_SWITCH("VSENSE", TAS2770_PWR_CTRL, 2, 1,
+                       &vsense_switch),
+       SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas2770_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 tas2770_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 tas2770_mute(struct snd_soc_dai *dai, int mute)
+{
+       struct snd_soc_component *component = dai->component;
+       int ret;
+
+       if (mute)
+               ret = tas2770_set_bias_level(component, SND_SOC_BIAS_PREPARE);
+       else
+               ret = tas2770_set_bias_level(component, SND_SOC_BIAS_STANDBY);
+
+       return ret;
+}
+
+static int tas2770_set_bitwidth(struct tas2770_priv *tas2770, int bitwidth)
+{
+       int ret;
+       struct snd_soc_component *component = tas2770->component;
+
+       switch (bitwidth) {
+       case SNDRV_PCM_FORMAT_S16_LE:
+               ret = snd_soc_component_update_bits(component,
+                       TAS2770_TDM_CFG_REG2,
+                       TAS2770_TDM_CFG_REG2_RXW_MASK,
+                       TAS2770_TDM_CFG_REG2_RXW_16BITS);
+               tas2770->v_sense_slot = tas2770->i_sense_slot + 2;
+               break;
+       case SNDRV_PCM_FORMAT_S24_LE:
+               ret = snd_soc_component_update_bits(component,
+                       TAS2770_TDM_CFG_REG2,
+                       TAS2770_TDM_CFG_REG2_RXW_MASK,
+                       TAS2770_TDM_CFG_REG2_RXW_24BITS);
+               tas2770->v_sense_slot = tas2770->i_sense_slot + 4;
+               break;
+       case SNDRV_PCM_FORMAT_S32_LE:
+               ret = snd_soc_component_update_bits(component,
+                       TAS2770_TDM_CFG_REG2,
+                       TAS2770_TDM_CFG_REG2_RXW_MASK,
+                       TAS2770_TDM_CFG_REG2_RXW_32BITS);
+               tas2770->v_sense_slot = tas2770->i_sense_slot + 4;
+               break;
+
+       default:
+               return -EINVAL;
+       }
+
+       tas2770->channel_size = bitwidth;
+
+       ret = snd_soc_component_update_bits(component,
+               TAS2770_TDM_CFG_REG5,
+               TAS2770_TDM_CFG_REG5_VSNS_MASK |
+               TAS2770_TDM_CFG_REG5_50_MASK,
+               TAS2770_TDM_CFG_REG5_VSNS_ENABLE |
+               tas2770->v_sense_slot);
+       if (ret)
+               goto end;
+       ret = snd_soc_component_update_bits(component,
+               TAS2770_TDM_CFG_REG6,
+               TAS2770_TDM_CFG_REG6_ISNS_MASK |
+               TAS2770_TDM_CFG_REG6_50_MASK,
+               TAS2770_TDM_CFG_REG6_ISNS_ENABLE |
+               tas2770->i_sense_slot);
+
+end:
+       return ret;
+}
+
+static int tas2770_set_samplerate(struct tas2770_priv *tas2770,
+                                                               int samplerate)
+{
+       int ret;
+       struct snd_soc_component *component = tas2770->component;
+
+       switch (samplerate) {
+       case 48000:
+               ret = snd_soc_component_update_bits(component,
+                       TAS2770_TDM_CFG_REG0,
+                       TAS2770_TDM_CFG_REG0_SMP_MASK,
+                       TAS2770_TDM_CFG_REG0_SMP_48KHZ);
+               if (ret)
+                       goto end;
+               ret = snd_soc_component_update_bits(component,
+                       TAS2770_TDM_CFG_REG0,
+                       TAS2770_TDM_CFG_REG0_31_MASK,
+                       TAS2770_TDM_CFG_REG0_31_44_1_48KHZ);
+               if (ret)
+                       goto end;
+               break;
+       case 44100:
+               ret = snd_soc_component_update_bits(component,
+                       TAS2770_TDM_CFG_REG0,
+                       TAS2770_TDM_CFG_REG0_SMP_MASK,
+                       TAS2770_TDM_CFG_REG0_SMP_44_1KHZ);
+               if (ret)
+                       goto end;
+               ret = snd_soc_component_update_bits(component,
+                       TAS2770_TDM_CFG_REG0,
+                       TAS2770_TDM_CFG_REG0_31_MASK,
+                       TAS2770_TDM_CFG_REG0_31_44_1_48KHZ);
+               if (ret)
+                       goto end;
+               break;
+       case 96000:
+               ret = snd_soc_component_update_bits(component,
+                       TAS2770_TDM_CFG_REG0,
+                       TAS2770_TDM_CFG_REG0_SMP_MASK,
+                       TAS2770_TDM_CFG_REG0_SMP_48KHZ);
+               if (ret)
+                       goto end;
+               ret = snd_soc_component_update_bits(component,
+                       TAS2770_TDM_CFG_REG0,
+                       TAS2770_TDM_CFG_REG0_31_MASK,
+                       TAS2770_TDM_CFG_REG0_31_88_2_96KHZ);
+               break;
+       case 88200:
+               ret = snd_soc_component_update_bits(component,
+                       TAS2770_TDM_CFG_REG0,
+                       TAS2770_TDM_CFG_REG0_SMP_MASK,
+                       TAS2770_TDM_CFG_REG0_SMP_44_1KHZ);
+               if (ret)
+                       goto end;
+               ret = snd_soc_component_update_bits(component,
+                       TAS2770_TDM_CFG_REG0,
+                       TAS2770_TDM_CFG_REG0_31_MASK,
+                       TAS2770_TDM_CFG_REG0_31_88_2_96KHZ);
+               break;
+       case 19200:
+               ret = snd_soc_component_update_bits(component,
+                       TAS2770_TDM_CFG_REG0,
+                       TAS2770_TDM_CFG_REG0_SMP_MASK,
+                       TAS2770_TDM_CFG_REG0_SMP_48KHZ);
+               if (ret)
+                       goto end;
+               ret = snd_soc_component_update_bits(component,
+                       TAS2770_TDM_CFG_REG0,
+                       TAS2770_TDM_CFG_REG0_31_MASK,
+                       TAS2770_TDM_CFG_REG0_31_176_4_192KHZ);
+               if (ret)
+                       goto end;
+               break;
+       case 17640:
+               ret = snd_soc_component_update_bits(component,
+                       TAS2770_TDM_CFG_REG0,
+                       TAS2770_TDM_CFG_REG0_SMP_MASK,
+                       TAS2770_TDM_CFG_REG0_SMP_44_1KHZ);
+               if (ret)
+                       goto end;
+               ret = snd_soc_component_update_bits(component,
+                       TAS2770_TDM_CFG_REG0,
+                       TAS2770_TDM_CFG_REG0_31_MASK,
+                       TAS2770_TDM_CFG_REG0_31_176_4_192KHZ);
+               break;
+       default:
+               ret = -EINVAL;
+       }
+
+end:
+       if (!ret)
+               tas2770->sampling_rate = samplerate;
+       return ret;
+}
+
+static int tas2770_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 tas2770_priv *tas2770 =
+                       snd_soc_component_get_drvdata(component);
+       int ret;
+
+       ret = tas2770_set_bitwidth(tas2770, params_format(params));
+       if (ret < 0)
+               goto end;
+
+
+       ret = tas2770_set_samplerate(tas2770, params_rate(params));
+
+end:
+       return ret;
+}
+
+static int tas2770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+       u8 tdm_rx_start_slot = 0, asi_cfg_1 = 0;
+       int ret;
+       int value = 0;
+       struct snd_soc_component *component = dai->component;
+       struct tas2770_priv *tas2770 =
+                       snd_soc_component_get_drvdata(component);
+
+       switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+       case SND_SOC_DAIFMT_CBS_CFS:
+               break;
+       default:
+               dev_err(tas2770->dev, "ASI format master is not found\n");
+               return -EINVAL;
+       }
+
+       switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+       case SND_SOC_DAIFMT_NB_NF:
+               asi_cfg_1 |= TAS2770_TDM_CFG_REG1_RX_RSING;
+               break;
+       case SND_SOC_DAIFMT_IB_NF:
+               asi_cfg_1 |= TAS2770_TDM_CFG_REG1_RX_FALING;
+               break;
+       default:
+               dev_err(tas2770->dev, "ASI format Inverse is not found\n");
+               return -EINVAL;
+       }
+
+       ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG1,
+               TAS2770_TDM_CFG_REG1_RX_MASK,
+               asi_cfg_1);
+       if (ret)
+               return ret;
+
+       switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+       case (SND_SOC_DAIFMT_I2S):
+               tdm_rx_start_slot = 1;
+               break;
+       case (SND_SOC_DAIFMT_DSP_A):
+               tdm_rx_start_slot = 0;
+               break;
+       case (SND_SOC_DAIFMT_DSP_B):
+               tdm_rx_start_slot = 1;
+               break;
+       case (SND_SOC_DAIFMT_LEFT_J):
+               tdm_rx_start_slot = 0;
+               break;
+       default:
+               dev_err(tas2770->dev,
+                       "DAI Format is not found, fmt=0x%x\n", fmt);
+               return -EINVAL;
+       }
+
+       ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG1,
+               TAS2770_TDM_CFG_REG1_MASK,
+       (tdm_rx_start_slot << TAS2770_TDM_CFG_REG1_51_SHIFT));
+       if (ret)
+               return ret;
+
+       value = snd_soc_component_read32(component, TAS2770_TDM_CFG_REG3);
+
+       tas2770->asi_format = fmt;
+
+       return 0;
+}
+
+static int tas2770_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 tas2770_priv *tas2770 =
+                       snd_soc_component_get_drvdata(component);
+       int left_slot, right_slot;
+       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;
+
+       ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG3,
+               TAS2770_TDM_CFG_REG3_30_MASK,
+               (left_slot << TAS2770_TDM_CFG_REG3_30_SHIFT));
+       if (ret)
+               return ret;
+       ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG3,
+               TAS2770_TDM_CFG_REG3_RXS_MASK,
+       (right_slot << TAS2770_TDM_CFG_REG3_RXS_SHIFT));
+       if (ret)
+               return ret;
+
+       switch (slot_width) {
+       case 16:
+               ret = snd_soc_component_update_bits(component,
+                       TAS2770_TDM_CFG_REG2,
+                       TAS2770_TDM_CFG_REG2_RXS_MASK,
+                       TAS2770_TDM_CFG_REG2_RXS_16BITS);
+       break;
+
+       case 24:
+               ret = snd_soc_component_update_bits(component,
+                       TAS2770_TDM_CFG_REG2,
+                       TAS2770_TDM_CFG_REG2_RXS_MASK,
+                       TAS2770_TDM_CFG_REG2_RXS_24BITS);
+       break;
+
+       case 32:
+               ret = snd_soc_component_update_bits(component,
+                       TAS2770_TDM_CFG_REG2,
+                       TAS2770_TDM_CFG_REG2_RXS_MASK,
+                       TAS2770_TDM_CFG_REG2_RXS_32BITS);
+       break;
+
+       case 0:
+       /* Do not change slot width */
+               ret = 0;
+       break;
+
+       default:
+               ret = -EINVAL;
+       }
+
+       if (!ret)
+               tas2770->slot_width = slot_width;
+
+       return ret;
+}
+
+static struct snd_soc_dai_ops tas2770_dai_ops = {
+       .digital_mute = tas2770_mute,
+       .hw_params  = tas2770_hw_params,
+       .set_fmt    = tas2770_set_fmt,
+       .set_tdm_slot = tas2770_set_dai_tdm_slot,
+};
+
+#define TAS2770_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
+               SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
+
+#define TAS2770_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
+                                          SNDRV_PCM_RATE_96000 |\
+                                           SNDRV_PCM_RATE_192000\
+                                         )
+
+static struct snd_soc_dai_driver tas2770_dai_driver[] = {
+       {
+               .name = "tas2770 ASI1",
+               .id = 0,
+               .playback = {
+                       .stream_name    = "ASI1 Playback",
+                       .channels_min   = 2,
+                       .channels_max   = 2,
+                       .rates      = TAS2770_RATES,
+                       .formats    = TAS2770_FORMATS,
+               },
+               .capture = {
+                       .stream_name    = "ASI1 Capture",
+                       .channels_min   = 0,
+                       .channels_max   = 2,
+                       .rates          = TAS2770_RATES,
+                       .formats    = TAS2770_FORMATS,
+               },
+               .ops = &tas2770_dai_ops,
+               .symmetric_rates = 1,
+       },
+};
+
+static int tas2770_codec_probe(struct snd_soc_component *component)
+{
+       struct tas2770_priv *tas2770 =
+                       snd_soc_component_get_drvdata(component);
+
+       tas2770->component = component;
+
+       return 0;
+}
+
+static DECLARE_TLV_DB_SCALE(tas2770_digital_tlv, 1100, 50, 0);
+static DECLARE_TLV_DB_SCALE(tas2770_playback_volume, -12750, 50, 0);
+
+static const struct snd_kcontrol_new tas2770_snd_controls[] = {
+       SOC_SINGLE_TLV("Amp Output Gain", TAS2770_PLAY_CFG_REG0,
+               0, 0x14, 0,
+               tas2770_digital_tlv),
+       SOC_SINGLE_TLV("Playback Volume", TAS2770_PLAY_CFG_REG2,
+               0, TAS2770_PLAY_CFG_REG2_VMAX, 1,
+               tas2770_playback_volume),
+};
+
+static const struct snd_soc_component_driver soc_component_driver_tas2770 = {
+       .probe                  = tas2770_codec_probe,
+       .suspend                = tas2770_codec_suspend,
+       .resume                 = tas2770_codec_resume,
+       .set_bias_level = tas2770_set_bias_level,
+       .controls               = tas2770_snd_controls,
+       .num_controls           = ARRAY_SIZE(tas2770_snd_controls),
+       .dapm_widgets           = tas2770_dapm_widgets,
+       .num_dapm_widgets       = ARRAY_SIZE(tas2770_dapm_widgets),
+       .dapm_routes            = tas2770_audio_map,
+       .num_dapm_routes        = ARRAY_SIZE(tas2770_audio_map),
+       .idle_bias_on           = 1,
+       .endianness             = 1,
+       .non_legacy_dai_naming  = 1,
+};
+
+static int tas2770_register_codec(struct tas2770_priv *tas2770)
+{
+       return devm_snd_soc_register_component(tas2770->dev,
+               &soc_component_driver_tas2770,
+               tas2770_dai_driver, ARRAY_SIZE(tas2770_dai_driver));
+}
+
+static void tas2770_load_config(struct tas2770_priv *tas2770)
+{
+       int ret;
+       struct snd_soc_component *component = tas2770->component;
+
+       tas2770_reset(tas2770);
+       snd_soc_component_write(component, TAS2770_SW_RST,
+                       TAS2770_RST);
+
+       ret = tas2770_set_bitwidth(tas2770, tas2770->channel_size);
+       if (ret)
+               goto error_out;
+
+       ret = tas2770_set_samplerate(tas2770, tas2770->sampling_rate);
+       if (ret)
+               goto error_out;
+
+       ret = tas2770_set_bias_level(component, tas2770->power_state);
+       if (ret)
+               goto error_out;
+
+error_out:
+               return;
+}
+
+static const struct reg_default tas2770_reg_defaults[] = {
+       { TAS2770_PAGE, 0x00 },
+       { TAS2770_SW_RST, 0x00 },
+       { TAS2770_PWR_CTRL, 0x0e },
+       { TAS2770_PLAY_CFG_REG0, 0x10 },
+       { TAS2770_PLAY_CFG_REG1, 0x01 },
+       { TAS2770_PLAY_CFG_REG2, 0x00 },
+       { TAS2770_MSC_CFG_REG0, 0x07 },
+       { TAS2770_TDM_CFG_REG1, 0x02 },
+       { TAS2770_TDM_CFG_REG2, 0x0a },
+       { TAS2770_TDM_CFG_REG3, 0x10 },
+       { TAS2770_INT_MASK_REG0, 0xfc },
+       { TAS2770_INT_MASK_REG1, 0xb1 },
+       { TAS2770_INT_CFG, 0x05 },
+       { TAS2770_MISC_IRQ, 0x81 },
+       { TAS2770_CLK_CGF, 0x0c },
+
+};
+
+static bool tas2770_volatile(struct device *dev, unsigned int reg)
+{
+       switch (reg) {
+       case TAS2770_PAGE: /* regmap implementation requires this */
+       case TAS2770_SW_RST: /* always clears after write */
+       case TAS2770_BO_PRV_REG0:/* has a self clearing bit */
+       case TAS2770_LVE_INT_REG0:
+       case TAS2770_LVE_INT_REG1:
+       case TAS2770_LAT_INT_REG0:/* Sticky interrupt flags */
+       case TAS2770_LAT_INT_REG1:/* Sticky interrupt flags */
+       case TAS2770_VBAT_MSB:
+       case TAS2770_VBAT_LSB:
+       case TAS2770_TEMP_MSB:
+       case TAS2770_TEMP_LSB:
+               return true;
+       }
+       return false;
+}
+
+static bool tas2770_writeable(struct device *dev, unsigned int reg)
+{
+       switch (reg) {
+       case TAS2770_LVE_INT_REG0:
+       case TAS2770_LVE_INT_REG1:
+       case TAS2770_LAT_INT_REG0:
+       case TAS2770_LAT_INT_REG1:
+       case TAS2770_VBAT_MSB:
+       case TAS2770_VBAT_LSB:
+       case TAS2770_TEMP_MSB:
+       case TAS2770_TEMP_LSB:
+       case TAS2770_TDM_CLK_DETC:
+       case TAS2770_REV_AND_GPID:
+               return false;
+       }
+       return true;
+}
+
+static const struct regmap_range_cfg tas2770_regmap_ranges[] = {
+       {
+               .range_min = 0,
+               .range_max = 1 * 128,
+               .selector_reg = TAS2770_PAGE,
+               .selector_mask = 0xff,
+               .selector_shift = 0,
+               .window_start = 0,
+               .window_len = 128,
+       },
+};
+
+static const struct regmap_config tas2770_i2c_regmap = {
+       .reg_bits = 8,
+       .val_bits = 8,
+       .writeable_reg = tas2770_writeable,
+       .volatile_reg = tas2770_volatile,
+       .reg_defaults = tas2770_reg_defaults,
+       .num_reg_defaults = ARRAY_SIZE(tas2770_reg_defaults),
+       .cache_type = REGCACHE_RBTREE,
+       .ranges = tas2770_regmap_ranges,
+       .num_ranges = ARRAY_SIZE(tas2770_regmap_ranges),
+       .max_register = 1 * 128,
+};
+
+static irqreturn_t tas2770_irq_handler(int irq, void *dev_id)
+{
+       struct tas2770_priv *tas2770 = (struct tas2770_priv *)dev_id;
+       struct snd_soc_component *component = tas2770->component;
+       unsigned int device_status_1 = 0, device_status_2 = 0;
+       int result;
+
+       if (tas2770->runtime_suspend)
+               goto end;
+
+       if (tas2770->power_state == TAS2770_POWER_SHUTDOWN)
+               goto end;
+
+       result = snd_soc_component_write(component, TAS2770_INT_MASK_REG0,
+                               TAS2770_INT_MASK_REG0_DISABLE);
+       if (result)
+               goto reload;
+       result = snd_soc_component_write(component, TAS2770_INT_MASK_REG1,
+                               TAS2770_INT_MASK_REG1_DISABLE);
+       if (result)
+               goto reload;
+
+       result = tas2770_regmap_read(tas2770,
+                       TAS2770_LAT_INT_REG0, &device_status_1);
+       if (!result && (device_status_1 & 0x3)) {
+               if (device_status_1 &
+                       TAS2770_LAT_INT_REG0_OCE_FLG) {
+                       tas2770->err_code |= ERROR_OVER_CURRENT;
+                       dev_err(tas2770->dev, "SPK over current!\n");
+               } else {
+                       tas2770->err_code &= ~ERROR_OVER_CURRENT;
+               }
+
+               if (device_status_1 &
+                       TAS2770_LAT_INT_REG0_OTE_FLG) {
+                       tas2770->err_code |= ERROR_DIE_OVERTEMP;
+                       dev_err(tas2770->dev, "die over temperature!\n");
+               } else {
+                       tas2770->err_code &= ~ERROR_DIE_OVERTEMP;
+               }
+       }
+
+       result = tas2770_regmap_read(tas2770,
+                       TAS2770_LAT_INT_REG1, &device_status_2);
+       if (!result && (device_status_2 & 0x0f)) {
+               if (device_status_2 &
+                       TAS2770_LAT_INT_REG1_VBA_TOV) {
+                       tas2770->err_code |= ERROR_OVER_VOLTAGE;
+                       dev_err(tas2770->dev, "SPK over voltage!\n");
+               } else {
+                       tas2770->err_code &= ~ERROR_OVER_VOLTAGE;
+               }
+
+               if (device_status_2 &
+                       TAS2770_LAT_INT_REG1_VBA_TUV) {
+                       tas2770->err_code |= ERROR_UNDER_VOLTAGE;
+                       dev_err(tas2770->dev, "SPK under voltage!\n");
+               } else {
+                       tas2770->err_code &= ~ERROR_UNDER_VOLTAGE;
+               }
+
+               if (device_status_2 &
+                       TAS2770_LAT_INT_REG1_BOUT_FLG) {
+                       tas2770->err_code |= ERROR_BROWNOUT;
+                       dev_err(tas2770->dev, "brownout!\n");
+               } else {
+                       tas2770->err_code &= ~ERROR_BROWNOUT;
+               }
+       }
+
+       result = snd_soc_component_write(component,
+                       TAS2770_INT_MASK_REG0, TAS2770_INT_REG0_DEFAULT);
+       if (result)
+               goto reload;
+
+       result = snd_soc_component_write(component,
+                       TAS2770_INT_MASK_REG1, TAS2770_INT_REG1_DEFAULT);
+       if (result)
+               goto reload;
+
+       goto end;
+
+reload:
+       /* hardware reset and reload */
+       tas2770_load_config(tas2770);
+
+end:
+       return IRQ_HANDLED;
+}
+
+static int tas2770_parse_dt(struct device *dev, struct tas2770_priv *tas2770)
+{
+       int rc = 0;
+
+       rc = fwnode_property_read_u32(dev->fwnode, "ti,asi-format",
+                                       &tas2770->asi_format);
+       if (rc) {
+               dev_err(tas2770->dev, "Looking up %s property failed %d\n",
+                       "ti,asi-format", rc);
+               goto end;
+       }
+
+       rc = fwnode_property_read_u32(dev->fwnode, "ti,imon-slot-no",
+                       &tas2770->i_sense_slot);
+       if (rc) {
+               dev_err(tas2770->dev, "Looking up %s property failed %d\n",
+                       "ti,imon-slot-no", rc);
+               goto end;
+       }
+
+       rc = fwnode_property_read_u32(dev->fwnode, "ti,vmon-slot-no",
+                               &tas2770->v_sense_slot);
+       if (rc) {
+               dev_err(tas2770->dev, "Looking up %s property failed %d\n",
+                       "ti,vmon-slot-no", rc);
+               goto end;
+       }
+
+end:
+       return rc;
+}
+
+static int tas2770_i2c_probe(struct i2c_client *client,
+                       const struct i2c_device_id *id)
+{
+       struct tas2770_priv *tas2770;
+       int result;
+
+       tas2770 = devm_kzalloc(&client->dev,
+               sizeof(struct tas2770_priv), GFP_KERNEL);
+       if (!tas2770)
+               return -ENOMEM;
+       tas2770->dev = &client->dev;
+       tas2770->irq_gpio = client->irq;
+
+       i2c_set_clientdata(client, tas2770);
+       dev_set_drvdata(&client->dev, tas2770);
+       tas2770->power_state = TAS2770_POWER_SHUTDOWN;
+
+       tas2770->regmap = devm_regmap_init_i2c(client, &tas2770_i2c_regmap);
+       if (IS_ERR(tas2770->regmap)) {
+               result = PTR_ERR(tas2770->regmap);
+               dev_err(&client->dev, "Failed to allocate register map: %d\n",
+                                       result);
+               goto end;
+       }
+
+       if (client->dev.of_node) {
+               result = tas2770_parse_dt(&client->dev, tas2770);
+               if (result) {
+                       dev_err(tas2770->dev, "%s: Failed to parse 
devicetree\n",
+                               __func__);
+                       goto end;
+               }
+       }
+
+       tas2770->reset_gpio = devm_gpiod_get_optional(tas2770->dev,
+                                                         "reset-gpio",
+                                                     GPIOD_OUT_HIGH);
+               if (IS_ERR(tas2770->reset_gpio)) {
+                       if (PTR_ERR(tas2770->reset_gpio) == -EPROBE_DEFER) {
+                               tas2770->reset_gpio = NULL;
+                               return -EPROBE_DEFER;
+                       }
+               }
+
+       if (tas2770->irq_gpio > 0) {
+               result = devm_request_threaded_irq(tas2770->dev,
+                          tas2770->irq_gpio,
+                          NULL, tas2770_irq_handler,
+                          IRQF_TRIGGER_FALLING | IRQF_ONESHOT, client->name,
+                          tas2770);
+               if (result) {
+                       dev_err(tas2770->dev, "Unable to request IRQ\n");
+                       return result;
+               }
+       }
+
+       tas2770->channel_size = 0;
+       tas2770->slot_width = 0;
+
+       tas2770_reset(tas2770);
+
+       result = tas2770_register_codec(tas2770);
+       if (result)
+               dev_err(tas2770->dev, "Register codec failed.\n");
+
+end:
+       return result;
+}
+
+static int tas2770_i2c_remove(struct i2c_client *client)
+{
+       pm_runtime_disable(&client->dev);
+       return 0;
+}
+
+
+static const struct i2c_device_id tas2770_i2c_id[] = {
+       { "tas2770", 0},
+       { }
+};
+MODULE_DEVICE_TABLE(i2c, tas2770_i2c_id);
+
+#if defined(CONFIG_OF)
+static const struct of_device_id tas2770_of_match[] = {
+       { .compatible = "ti,tas2770" },
+       {},
+};
+MODULE_DEVICE_TABLE(of, tas2770_of_match);
+#endif
+
+static struct i2c_driver tas2770_i2c_driver = {
+       .driver = {
+               .name   = "tas2770",
+               .owner  = THIS_MODULE,
+               .of_match_table = of_match_ptr(tas2770_of_match),
+       },
+       .probe      = tas2770_i2c_probe,
+       .remove     = tas2770_i2c_remove,
+       .id_table   = tas2770_i2c_id,
+};
+
+module_i2c_driver(tas2770_i2c_driver);
+
+MODULE_AUTHOR("Shi Fu <shifu0...@thundersoft.com>");
+MODULE_DESCRIPTION("TAS2770 I2C Smart Amplifier driver");
+MODULE_LICENSE("GPL v2");
diff --git a/sound/soc/codecs/tas2770.h b/sound/soc/codecs/tas2770.h
new file mode 100644
index 0000000..bf59dc2
--- /dev/null
+++ b/sound/soc/codecs/tas2770.h
@@ -0,0 +1,166 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * ALSA SoC TAS2770 codec driver
+ *
+ *  Copyright (C) 2016-2017 Texas Instruments Incorporated - http://www.ti.com/
+ */
+#ifndef __TAS2770__
+#define __TAS2770__
+
+/* Book Control Register (available in page0 of each book) */
+#define TAS2770_BOOKCTL_PAGE            0
+#define TAS2770_BOOKCTL_REG         127
+#define TAS2770_REG(page, reg)        ((page * 128) + reg)
+    /* Page */
+#define TAS2770_PAGE  TAS2770_REG(0X0, 0x00)
+#define TAS2770_PAGE_PAGE_MASK  255
+    /* Software Reset */
+#define TAS2770_SW_RST  TAS2770_REG(0X0, 0x01)
+#define TAS2770_RST  BIT(0)
+    /* Power Control */
+#define TAS2770_PWR_CTRL  TAS2770_REG(0X0, 0x02)
+#define TAS2770_PWR_CTRL_MASK  0x3
+#define TAS2770_PWR_CTRL_ACTIVE  0x0
+#define TAS2770_PWR_CTRL_MUTE  BIT(0)
+#define TAS2770_PWR_CTRL_SHUTDOWN  0x2
+    /* Playback Configuration Reg0 */
+#define TAS2770_PLAY_CFG_REG0  TAS2770_REG(0X0, 0x03)
+    /* Playback Configuration Reg1 */
+#define TAS2770_PLAY_CFG_REG1  TAS2770_REG(0X0, 0x04)
+    /* Playback Configuration Reg2 */
+#define TAS2770_PLAY_CFG_REG2  TAS2770_REG(0X0, 0x05)
+#define TAS2770_PLAY_CFG_REG2_VMAX 0xc9
+    /* Misc Configuration Reg0 */
+#define TAS2770_MSC_CFG_REG0  TAS2770_REG(0X0, 0x07)
+    /* TDM Configuration Reg0 */
+#define TAS2770_TDM_CFG_REG0  TAS2770_REG(0X0, 0x0A)
+#define TAS2770_TDM_CFG_REG0_SMP_MASK  BIT(5)
+#define TAS2770_TDM_CFG_REG0_SMP_48KHZ  0x0
+#define TAS2770_TDM_CFG_REG0_SMP_44_1KHZ  BIT(5)
+#define TAS2770_TDM_CFG_REG0_31_MASK  0xe
+#define TAS2770_TDM_CFG_REG0_31_44_1_48KHZ  0x6
+#define TAS2770_TDM_CFG_REG0_31_88_2_96KHZ  0x8
+#define TAS2770_TDM_CFG_REG0_31_176_4_192KHZ  0xa
+    /* TDM Configuration Reg1 */
+#define TAS2770_TDM_CFG_REG1  TAS2770_REG(0X0, 0x0B)
+#define TAS2770_TDM_CFG_REG1_MASK 0x3e
+#define TAS2770_TDM_CFG_REG1_51_SHIFT  1
+#define TAS2770_TDM_CFG_REG1_RX_MASK  BIT(0)
+#define TAS2770_TDM_CFG_REG1_RX_RSING  0x0
+#define TAS2770_TDM_CFG_REG1_RX_FALING  BIT(0)
+    /* TDM Configuration Reg2 */
+#define TAS2770_TDM_CFG_REG2  TAS2770_REG(0X0, 0x0C)
+#define TAS2770_TDM_CFG_REG2_RXW_MASK  0xc
+#define TAS2770_TDM_CFG_REG2_RXW_16BITS  0x0
+#define TAS2770_TDM_CFG_REG2_RXW_24BITS  0x8
+#define TAS2770_TDM_CFG_REG2_RXW_32BITS  0xc
+#define TAS2770_TDM_CFG_REG2_RXS_MASK    0x3
+#define TAS2770_TDM_CFG_REG2_RXS_16BITS  0x0
+#define TAS2770_TDM_CFG_REG2_RXS_24BITS  BIT(0)
+#define TAS2770_TDM_CFG_REG2_RXS_32BITS  0x2
+    /* TDM Configuration Reg3 */
+#define TAS2770_TDM_CFG_REG3  TAS2770_REG(0X0, 0x0D)
+#define TAS2770_TDM_CFG_REG3_RXS_MASK  0xf0
+#define TAS2770_TDM_CFG_REG3_RXS_SHIFT 0x4
+#define TAS2770_TDM_CFG_REG3_30_MASK  0xf
+#define TAS2770_TDM_CFG_REG3_30_SHIFT 0
+    /* TDM Configuration Reg5 */
+#define TAS2770_TDM_CFG_REG5  TAS2770_REG(0X0, 0x0F)
+#define TAS2770_TDM_CFG_REG5_VSNS_MASK  BIT(6)
+#define TAS2770_TDM_CFG_REG5_VSNS_ENABLE  BIT(6)
+#define TAS2770_TDM_CFG_REG5_50_MASK  0x3f
+    /* TDM Configuration Reg6 */
+#define TAS2770_TDM_CFG_REG6  TAS2770_REG(0X0, 0x10)
+#define TAS2770_TDM_CFG_REG6_ISNS_MASK  BIT(6)
+#define TAS2770_TDM_CFG_REG6_ISNS_ENABLE  BIT(6)
+#define TAS2770_TDM_CFG_REG6_50_MASK  0x3f
+    /* Brown Out Prevention Reg0 */
+#define TAS2770_BO_PRV_REG0  TAS2770_REG(0X0, 0x1B)
+    /* Interrupt MASK Reg0 */
+#define TAS2770_INT_MASK_REG0  TAS2770_REG(0X0, 0x20)
+#define TAS2770_INT_REG0_DEFAULT  0xfc
+#define TAS2770_INT_MASK_REG0_DISABLE 0xff
+    /* Interrupt MASK Reg1 */
+#define TAS2770_INT_MASK_REG1  TAS2770_REG(0X0, 0x21)
+#define TAS2770_INT_REG1_DEFAULT  0xb1
+#define TAS2770_INT_MASK_REG1_DISABLE 0xff
+    /* Live-Interrupt Reg0 */
+#define TAS2770_LVE_INT_REG0  TAS2770_REG(0X0, 0x22)
+    /* Live-Interrupt Reg1 */
+#define TAS2770_LVE_INT_REG1  TAS2770_REG(0X0, 0x23)
+    /* Latched-Interrupt Reg0 */
+#define TAS2770_LAT_INT_REG0  TAS2770_REG(0X0, 0x24)
+#define TAS2770_LAT_INT_REG0_OCE_FLG  BIT(1)
+#define TAS2770_LAT_INT_REG0_OTE_FLG  BIT(0)
+    /* Latched-Interrupt Reg1 */
+#define TAS2770_LAT_INT_REG1  TAS2770_REG(0X0, 0x25)
+#define TAS2770_LAT_INT_REG1_VBA_TOV  BIT(3)
+#define TAS2770_LAT_INT_REG1_VBA_TUV  BIT(2)
+#define TAS2770_LAT_INT_REG1_BOUT_FLG  BIT(1)
+    /* VBAT MSB */
+#define TAS2770_VBAT_MSB  TAS2770_REG(0X0, 0x27)
+    /* VBAT LSB */
+#define TAS2770_VBAT_LSB  TAS2770_REG(0X0, 0x28)
+    /* TEMP MSB */
+#define TAS2770_TEMP_MSB  TAS2770_REG(0X0, 0x29)
+    /* TEMP LSB */
+#define TAS2770_TEMP_LSB  TAS2770_REG(0X0, 0x2A)
+    /* Interrupt Configuration */
+#define TAS2770_INT_CFG  TAS2770_REG(0X0, 0x30)
+    /* Misc IRQ */
+#define TAS2770_MISC_IRQ  TAS2770_REG(0X0, 0x32)
+    /* Clock Configuration */
+#define TAS2770_CLK_CGF  TAS2770_REG(0X0, 0x3C)
+    /* TDM Clock detection monitor */
+#define TAS2770_TDM_CLK_DETC  TAS2770_REG(0X0, 0x77)
+    /* Revision and PG ID */
+#define TAS2770_REV_AND_GPID  TAS2770_REG(0X0, 0x7D)
+
+#define TAS2770_POWER_ACTIVE 0
+#define TAS2770_POWER_MUTE 1
+#define TAS2770_POWER_SHUTDOWN 2
+#define ERROR_OVER_CURRENT  0x0000001
+#define ERROR_DIE_OVERTEMP  0x0000002
+#define ERROR_OVER_VOLTAGE  0x0000004
+#define ERROR_UNDER_VOLTAGE 0x0000008
+#define ERROR_BROWNOUT      0x0000010
+#define ERROR_CLASSD_PWR    0x0000020
+#define TAS2770_SLOT_16BIT  16
+#define TAS2770_SLOT_32BIT  32
+#define TAS2770_I2C_RETRY_COUNT      3
+
+struct tas2770_register {
+       int book;
+       int page;
+       int reg;
+};
+
+struct tas2770_dai_cfg {
+       unsigned int dai_fmt;
+       unsigned int tdm_delay;
+};
+
+struct tas2770_priv {
+       struct device *dev;
+       struct regmap *regmap;
+       struct snd_soc_codec *codec;
+       struct snd_soc_component *component;
+       struct mutex dev_lock;
+       struct hrtimer mtimer;
+       int power_state;
+       int asi_format;
+       struct gpio_desc *reset_gpio;
+       int irq_gpio;
+       bool irq_enable;
+       int sampling_rate;
+       int frame_size;
+       int channel_size;
+       int slot_width;
+       int v_sense_slot;
+       int i_sense_slot;
+       bool runtime_suspend;
+       unsigned int err_code;
+       struct mutex codec_lock;
+};
+
+#endif /* __TAS2770__ */
-- 
2.7.4

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