[PATCH v3] ASoC: tas2552: Support TI TAS2552 Amplifier

Dan Murphy
2014-07-02T13:30:52Z

Support the TI TAS2552 Class D amplifier.

The TAS2552 is a high efficiency Class-D audio
power amplifier with advanced battery current
management and an integrated Class-G boost
The device constantly measures the
current and voltage across the load and provides a
digital stream of this information.

Signed-off-by: Dan Murphy <dmurphy@ti.com>
---

v3 - Updated bindings doc per comments, rearranged probe pdata vs
np check - https://patchwork.kernel.org/patch/4453481/

.../devicetree/bindings/sound/tas2552.txt | 22 +
include/sound/tas2552-plat.h | 25 ++
sound/soc/codecs/Kconfig | 5 +
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/tas2552.c | 463 ++++++++++++++++++++
sound/soc/codecs/tas2552.h | 75 ++++
6 files changed, 592 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/tas2552.txt
create mode 100644 include/sound/tas2552-plat.h
create mode 100644 sound/soc/codecs/tas2552.c
create mode 100644 sound/soc/codecs/tas2552.h

diff --git a/Documentation/devicetree/bindings/sound/tas2552.txt b/Documentation/devicetree/bindings/sound/tas2552.txt
new file mode 100644
index 0000000..ada8fd4
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/tas2552.txt
@@ -0,0 +1,22 @@
+Texas Instruments - tas2552 Codec module
+
+The tas2552 serial control bus communicates through I2C protocols
+
+Required properties:
+
+- compatible - One of:
+ "ti,tas2552" - TAS2552
+
+- reg - I2C slave address
+
+Optional properties:
+
+- power-gpio - gpio pin to enable/disable the device
+
+Example:
+
+tas2552: tas2552@41 {
+ compatible = "ti,tas2552";
+ reg = <0x41>;
+ enable-gpio = <&gpio4 2 GPIO_ACTIVE_HIGH>;
+};
diff --git a/include/sound/tas2552-plat.h b/include/sound/tas2552-plat.h
new file mode 100644
index 0000000..65e7627
--- /dev/null
+++ b/include/sound/tas2552-plat.h
@@ -0,0 +1,25 @@
+/*
+ * TAS2552 driver platform header
+ *
+ * Copyright (C) 2014 Texas Instruments Inc.
+ *
+ * Author: Dan Murphy <dmurphy@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#ifndef TAS2552_PLAT_H
+#define TAS2552_PLAT_H
+
+struct tas2552_platform_data {
+ int enable_gpio;
+};
+
+#endif
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 0b9571c..cc09261 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -99,6 +99,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_TLV320AIC32X4 if I2C
select SND_SOC_TLV320AIC3X if I2C
select SND_SOC_TPA6130A2 if I2C
+ select SND_SOC_TAS2552 if I2C
select SND_SOC_TLV320DAC33 if I2C
select SND_SOC_TWL4030 if TWL4030_CORE
select SND_SOC_TWL6040 if TWL6040_CORE
@@ -754,4 +755,8 @@ config SND_SOC_TPA6130A2
tristate "Texas Instruments TPA6130A2 headphone amplifier"
depends on I2C

+config SND_SOC_TAS2552
+ tristate "Texas Instruments TAS2552 Mono Audio amplifier"
+ depends on I2C
+
endmenu
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 1bd6e1c..33bc7228 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -162,6 +162,7 @@ snd-soc-wm-hubs-objs := wm_hubs.o
# Amp
snd-soc-max9877-objs := max9877.o
snd-soc-tpa6130a2-objs := tpa6130a2.o
+snd-soc-tas2552-objs := tas2552.o

obj-$(CONFIG_SND_SOC_88PM860X) += snd-soc-88pm860x.o
obj-$(CONFIG_SND_SOC_AB8500_CODEC) += snd-soc-ab8500-codec.o
@@ -325,3 +326,4 @@ obj-$(CONFIG_SND_SOC_WM_HUBS) += snd-soc-wm-hubs.o
# Amp
obj-$(CONFIG_SND_SOC_MAX9877) += snd-soc-max9877.o
obj-$(CONFIG_SND_SOC_TPA6130A2) += snd-soc-tpa6130a2.o
+obj-$(CONFIG_SND_SOC_TAS2552) += snd-soc-tas2552.o
diff --git a/sound/soc/codecs/tas2552.c b/sound/soc/codecs/tas2552.c
new file mode 100644
index 0000000..79b8212
--- /dev/null
+++ b/sound/soc/codecs/tas2552.c
@@ -0,0 +1,463 @@
+/*
+ * ALSA SoC Texas Instruments TAS2552 Mono Audio Amplifier
+ *
+ * Copyright (C) 2014 Texas Instruments Inc.
+ *
+ * Author: Dan Murphy <dmurphy@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/device.h>
+#include <linux/i2c.h>
+#include <linux/gpio.h>
+#include <linux/of_gpio.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/tlv.h>
+#include <sound/tas2552-plat.h>
+
+#include "tas2552.h"
+
+static struct reg_default tas2552_reg_defs[] = {
+ {TAS2552_CFG_1, 0x16},
+ {TAS2552_CFG_3, 0x5E},
+ {TAS2552_DOUT, 0x00},
+ {TAS2552_OUTPUT_DATA, 0xC8},
+ {TAS2552_PDM_CFG, 0x02},
+ {TAS2552_PGA_GAIN, 0x10},
+ {TAS2552_BOOST_PT_CTRL, 0x0F},
+ {TAS2552_LIMIT_LVL_CTRL, 0x0C},
+ {TAS2552_LIMIT_RATE_HYS, 0x20},
+ {TAS2552_CFG_2, 0xEA},
+ {TAS2552_SER_CTRL_1, 0x00},
+ {TAS2552_SER_CTRL_2, 0x00},
+ {TAS2552_PLL_CTRL_1, 0x10},
+ {TAS2552_PLL_CTRL_2, 0x00},
+ {TAS2552_PLL_CTRL_3, 0x00},
+ {TAS2552_BTIP, 0x8f},
+ {TAS2552_BTS_CTRL, 0x80},
+ {TAS2552_LIMIT_RELEASE, 0x05},
+ {TAS2552_LIMIT_INT_COUNT, 0x00},
+ {TAS2552_EDGE_RATE_CTRL, 0x40},
+ {TAS2552_VBAT_DATA, 0x00},
+};
+
+struct tas2552_data {
+ struct mutex mutex;
+ struct snd_soc_codec *codec;
+ struct regmap *regmap;
+ struct i2c_client *tas2552_client;
+ unsigned char regs[TAS2552_VBAT_DATA];
+ int power_gpio;
+ u8 power_state:1;
+};
+
+static int tas2552_power(struct tas2552_data *data, u8 power)
+{
+ int ret = 0;
+
+ BUG_ON(data->tas2552_client == NULL);
+
+ mutex_lock(&data->mutex);
+ if (power == data->power_state)
+ goto exit;
+
+ if (power) {
+ if (data->power_gpio >= 0)
+ gpio_set_value(data->power_gpio, 1);
+
+ data->power_state = 1;
+ } else {
+ if (data->power_gpio >= 0)
+ gpio_set_value(data->power_gpio, 0);
+
+ data->power_state = 0;
+ }
+
+exit:
+ mutex_unlock(&data->mutex);
+ return ret;
+}
+
+static void tas2552_sw_shutdown(struct tas2552_data *tas_data, int sw_shutdown)
+{
+ u8 cfg1_reg = 0x0;
+
+ if (sw_shutdown)
+ cfg1_reg |= (sw_shutdown << 1);
+ else
+ cfg1_reg &= ~TAS2552_SWS_MASK;
+
+ snd_soc_update_bits(tas_data->codec, TAS2552_CFG_1,
+ TAS2552_SWS_MASK, cfg1_reg);
+}
+
+static void tas2552_init(struct snd_soc_codec *codec)
+{
+ snd_soc_write(codec, TAS2552_CFG_1, 0x16);
+ snd_soc_write(codec, TAS2552_CFG_3, 0x5E);
+ snd_soc_write(codec, TAS2552_DOUT, 0x00);
+ snd_soc_write(codec, TAS2552_OUTPUT_DATA, 0xC8);
+ snd_soc_write(codec, TAS2552_PDM_CFG, 0x02);
+ snd_soc_write(codec, TAS2552_PGA_GAIN, 0x10);
+ snd_soc_write(codec, TAS2552_BOOST_PT_CTRL, 0x0F);
+ snd_soc_write(codec, TAS2552_LIMIT_LVL_CTRL, 0x0C);
+ snd_soc_write(codec, TAS2552_LIMIT_RATE_HYS, 0x20);
+ snd_soc_write(codec, TAS2552_CFG_2, 0xEA);
+}
+
+static int tas2552_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ u8 wclk_reg;
+ struct snd_soc_codec *codec = dai->codec;
+
+ /* Setting DAC clock dividers based on substream sample rate. */
+ switch (params_rate(params)) {
+ case 8000:
+ wclk_reg = TAS2552_8KHZ;
+ break;
+ case 11025:
+ wclk_reg = TAS2552_11_12KHZ;
+ break;
+ case 16000:
+ wclk_reg = TAS2552_16KHZ;
+ break;
+ case 32000:
+ wclk_reg = TAS2552_32KHZ;
+ break;
+ case 22050:
+ case 24000:
+ wclk_reg = TAS2552_22_24KHZ;
+ break;
+ case 44100:
+ case 48000:
+ wclk_reg = TAS2552_44_48KHZ;
+ break;
+ case 96000:
+ wclk_reg = TAS2552_88_96KHZ;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ snd_soc_update_bits(codec, TAS2552_CFG_3, TAS2552_WCLK_MASK, wclk_reg);
+
+ return 0;
+}
+
+static int tas2552_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ u8 serial_format;
+ struct snd_soc_codec *codec = dai->codec;
+
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBS_CFS:
+ serial_format = 0x00;
+ break;
+ case SND_SOC_DAIFMT_CBS_CFM:
+ serial_format = TAS2552_WORD_CLK_MASK;
+ break;
+ case SND_SOC_DAIFMT_CBM_CFS:
+ serial_format = TAS2552_BIT_CLK_MASK;
+ break;
+ case SND_SOC_DAIFMT_CBM_CFM:
+ serial_format = (TAS2552_BIT_CLK_MASK | TAS2552_WORD_CLK_MASK);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ snd_soc_update_bits(codec, TAS2552_SER_CTRL_1,
+ (TAS2552_BIT_CLK_MASK | TAS2552_WORD_CLK_MASK),
+ serial_format);
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ serial_format = 0x0;
+ break;
+ case SND_SOC_DAIFMT_DSP_A:
+ serial_format = TAS2552_DAIFMT_DSP;
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ serial_format = TAS2552_DAIFMT_RIGHT_J;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ serial_format = TAS2552_DAIFMT_LEFT_J;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ snd_soc_update_bits(codec, TAS2552_SER_CTRL_1, TAS2552_DATA_FORMAT_MASK,
+ serial_format);
+
+ return 0;
+}
+
+static int tas2552_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
+ unsigned int freq, int dir)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ struct tas2552_data *data = dev_get_drvdata(dai->dev);
+
+ /* Fill in the PLL control registers for J & D
+ * PLL_CLK = (.5 * freq * J.D) / 2^p
+ * Need to fill in J and D here based on incoming freq
+ */
+
+ tas2552_sw_shutdown(data, 1);
+
+ snd_soc_update_bits(codec, TAS2552_CFG_2, TAS2552_PLL_ENABLE, 0);
+
+ snd_soc_write(codec, TAS2552_PLL_CTRL_1, 0x10);
+ snd_soc_write(codec, TAS2552_PLL_CTRL_2, 0x00);
+ snd_soc_write(codec, TAS2552_PLL_CTRL_3, 0x00);
+
+ snd_soc_update_bits(codec, TAS2552_CFG_2, TAS2552_PLL_ENABLE,
+ TAS2552_PLL_ENABLE);
+
+ tas2552_sw_shutdown(data, 0);
+
+ return 0;
+}
+
+static int tas2552_mute(struct snd_soc_dai *dai, int mute)
+{
+ u8 cfg1_reg = 0x0;
+ struct snd_soc_codec *codec = dai->codec;
+
+ if (mute)
+ cfg1_reg |= TAS2552_MUTE_MASK;
+ else
+ cfg1_reg &= ~TAS2552_MUTE_MASK;
+
+ snd_soc_update_bits(codec, TAS2552_CFG_1, TAS2552_MUTE_MASK, cfg1_reg);
+
+ return 0;
+}
+
+static int tas2552_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec);
+
+ tas2552_sw_shutdown(tas2552, 1);
+ tas2552_power(tas2552, 1);
+
+ /* Turn on Class D amplifier */
+ snd_soc_update_bits(codec, TAS2552_CFG_2, TAS2552_CLASSD_EN_MASK,
+ TAS2552_CLASSD_EN);
+
+ tas2552_sw_shutdown(tas2552, 0);
+
+ return 0;
+}
+
+static void tas2552_shutdown(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec);
+
+ tas2552_sw_shutdown(tas2552, 1);
+ tas2552_power(tas2552, 0);
+}
+
+static struct snd_soc_dai_ops tas2552_speaker_dai_ops = {
+ .hw_params = tas2552_hw_params,
+ .set_sysclk = tas2552_set_dai_sysclk,
+ .set_fmt = tas2552_set_dai_fmt,
+ .startup = tas2552_startup,
+ .shutdown = tas2552_shutdown,
+ .digital_mute = tas2552_mute,
+};
+
+/* Formats supported by TAS2552 driver. */
+#define TAS2552_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
+ SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
+
+/* TAS2552 dai structure. */
+static struct snd_soc_dai_driver tas2552_dai[] = {
+ {
+ .name = "tas2552-amplifier",
+ .playback = {
+ .stream_name = "Speaker",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = TAS2552_FORMATS,
+ },
+ .ops = &tas2552_speaker_dai_ops,
+ },
+};
+
+/*
+ * DAC digital volumes. From -7 to 24 dB in 1 dB steps
+ */
+static DECLARE_TLV_DB_SCALE(dac_tlv, -7, 100, 24);
+
+static const struct snd_kcontrol_new tas2552_snd_controls[] = {
+ SOC_SINGLE_TLV("Speaker Driver Playback Volume",
+ TAS2552_PGA_GAIN, 0, 0x1f, 1, dac_tlv),
+};
+
+static int tas2552_codec_probe(struct snd_soc_codec *codec)
+{
+ struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec);
+
+ tas2552->codec = codec;
+ tas2552_power(tas2552, 1);
+ tas2552_init(codec);
+
+ return 0;
+}
+
+static int tas2552_codec_remove(struct snd_soc_codec *codec)
+{
+ struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec);
+
+ tas2552_power(tas2552, 0);
+
+ return 0;
+};
+
+static struct snd_soc_codec_driver soc_codec_dev_tas2552 = {
+ .probe = tas2552_codec_probe,
+ .remove = tas2552_codec_remove,
+ .controls = tas2552_snd_controls,
+ .num_controls = ARRAY_SIZE(tas2552_snd_controls),
+};
+
+static const struct regmap_config tas2552_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+
+ .max_register = TAS2552_MAX_REG,
+ .reg_defaults = tas2552_reg_defs,
+ .num_reg_defaults = ARRAY_SIZE(tas2552_reg_defs),
+ .cache_type = REGCACHE_RBTREE,
+};
+
+static int tas2552_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct device *dev;
+ struct tas2552_data *data;
+ struct tas2552_platform_data *pdata = client->dev.platform_data;
+ struct device_node *np = client->dev.of_node;
+ int ret;
+
+ dev = &client->dev;
+ data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
+ if (data == NULL)
+ return -ENOMEM;
+
+ if (np) {
+ data->power_gpio = of_get_named_gpio(np, "enable-gpio", 0);
+ } else if (pdata) {
+ data->power_gpio = pdata->enable_gpio;
+ } else {
+ dev_err(dev, "Platform or dev tree data not set\n");
+ return -ENODEV;
+ }
+
+ data->regmap = devm_regmap_init_i2c(client, &tas2552_regmap_config);
+ if (IS_ERR(data->regmap)) {
+ ret = PTR_ERR(data->regmap);
+ dev_err(&client->dev, "Failed to allocate register map: %d\n",
+ ret);
+ return ret;
+ }
+
+ data->tas2552_client = client;
+ data->regmap = devm_regmap_init_i2c(client, &tas2552_regmap_config);
+ if (IS_ERR(data->regmap)) {
+ ret = PTR_ERR(data->regmap);
+ dev_err(&client->dev, "Failed to allocate register map: %d\n",
+ ret);
+ return ret;
+ }
+
+ dev_set_drvdata(&client->dev, data);
+
+ mutex_init(&data->mutex);
+
+ if (data->power_gpio >= 0) {
+ ret = devm_gpio_request(dev, data->power_gpio,
+ "tas2552 enable");
+ if (ret < 0) {
+ dev_err(dev, "Failed to request power GPIO (%d)\n",
+ data->power_gpio);
+ goto err_gpio;
+ }
+ gpio_direction_output(data->power_gpio, 0);
+ }
+
+ ret = snd_soc_register_codec(&client->dev,
+ &soc_codec_dev_tas2552,
+ tas2552_dai, ARRAY_SIZE(tas2552_dai));
+ if (ret < 0)
+ dev_err(&client->dev, "Failed to register codec: %d\n", ret);
+
+ return 0;
+
+err_gpio:
+ data->tas2552_client = NULL;
+ return ret;
+}
+
+static int tas2552_i2c_remove(struct i2c_client *client)
+{
+ snd_soc_unregister_codec(&client->dev);
+ return 0;
+}
+
+static const struct i2c_device_id tas2552_id[] = {
+ { "tas2552-codec", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, tas2552_id);
+
+#if IS_ENABLED(CONFIG_OF)
+static const struct of_device_id tas2552_of_match[] = {
+ { .compatible = "ti,tas2552", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, tas2552_of_match);
+#endif
+
+static struct i2c_driver tas2552_i2c_driver = {
+ .driver = {
+ .name = "tas2552-codec",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(tas2552_of_match),
+ },
+ .probe = tas2552_probe,
+ .remove = tas2552_i2c_remove,
+ .id_table = tas2552_id,
+};
+
+module_i2c_driver(tas2552_i2c_driver);
+
+MODULE_AUTHOR("Dan Muprhy <dmurphy@ti.com>");
+MODULE_DESCRIPTION("TAS2552 Audio amplifier driver");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/codecs/tas2552.h b/sound/soc/codecs/tas2552.h
new file mode 100644
index 0000000..174c64d
--- /dev/null
+++ b/sound/soc/codecs/tas2552.h
@@ -0,0 +1,75 @@
+/*
+ * ALSA SoC Texas Instruments TAS2552 Mono Audio Amplifier
+ *
+ * Copyright (C) 2014 Texas Instruments Inc.
+ *
+ * Author: Dan Murphy <dmurphy@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#ifndef __TAS2552_H__
+#define __TAS2552_H__
+
+/* Register Address Map */
+#define TAS2552_DEVICE_STATUS 0x00
+#define TAS2552_CFG_1 0x01
+#define TAS2552_CFG_2 0x02
+#define TAS2552_CFG_3 0x03
+#define TAS2552_DOUT 0x04
+#define TAS2552_SER_CTRL_1 0x05
+#define TAS2552_SER_CTRL_2 0x06
+#define TAS2552_OUTPUT_DATA 0x07
+#define TAS2552_PLL_CTRL_1 0x08
+#define TAS2552_PLL_CTRL_2 0x09
+#define TAS2552_PLL_CTRL_3 0x0a
+#define TAS2552_BTIP 0x0b
+#define TAS2552_BTS_CTRL 0x0c
+#define TAS2552_LIMIT_LVL_CTRL 0x0d
+#define TAS2552_LIMIT_RATE_HYS 0x0e
+#define TAS2552_LIMIT_RELEASE 0x0f
+#define TAS2552_LIMIT_INT_COUNT 0x10
+#define TAS2552_PDM_CFG 0x11
+#define TAS2552_PGA_GAIN 0x12
+#define TAS2552_EDGE_RATE_CTRL 0x13
+#define TAS2552_BOOST_PT_CTRL 0x14
+#define TAS2552_VER_NUM 0x16
+#define TAS2552_VBAT_DATA 0x19
+#define TAS2552_MAX_REG 0x20
+
+/* CFG1 Register Masks */
+#define TAS2552_MUTE_MASK (1 << 2)
+#define TAS2552_SWS_MASK (1 << 1)
+#define TAS2552_WCLK_MASK 0x07
+#define TAS2552_CLASSD_EN_MASK (1 << 7)
+#define TAS2552_CLASSD_EN 0x80
+
+#define TAS2552_PLL_ENABLE (1 << 3)
+
+/* CFG3 Register Masks */
+#define TAS2552_WORD_CLK_MASK 0x80
+#define TAS2552_BIT_CLK_MASK 0x40
+#define TAS2552_DATA_FORMAT_MASK 0x0c
+
+#define TAS2552_DAIFMT_DSP 0x04
+#define TAS2552_DAIFMT_RIGHT_J 0x08
+#define TAS2552_DAIFMT_LEFT_J 0x0c
+
+/* WCLK Dividers */
+#define TAS2552_8KHZ 0x00
+#define TAS2552_11_12KHZ 0x01
+#define TAS2552_16KHZ 0x02
+#define TAS2552_22_24KHZ 0x03
+#define TAS2552_32KHZ 0x04
+#define TAS2552_44_48KHZ 0x05
+#define TAS2552_88_96KHZ 0x06
+#define TAS2552_176_192KHZ 0x07
+
+#endif
--
1.7.9.5