[alsa-devel] [PATCH v7] ASoC: tas2552: Support TI TAS2552 Amplifier
Dan Murphy
dmurphy at ti.com
Mon Jul 14 22:10:45 CEST 2014
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 at ti.com>
---
v7 - Addressed pm_runtime comments, sorted and alphatized the Makefile
and Kconfg, removed "-codec", disable PLL at probe -
https://patchwork.kernel.org/patch/4535501/
v6 - Addressed comments from v5 also added PLL algorithim instead of
hard coding PLL registers - https://patchwork.kernel.org/patch/4476001/
v5 - Consolidated dai_fmt call back to write serial control register
once - https://patchwork.kernel.org/patch/4474531/
v4 - Added pm_runtime support, removed magical numbers, added regulator
support, changed from legacy gpio to new gpiod calls, fixed default register
values, flipped on battery tracking support and
added suspend/resume support - https://patchwork.kernel.org/patch/4465611/
v3 - Updated bindings doc per comments, rearranged probe pdata vs
np check - https://patchwork.kernel.org/patch/4453481/
v2 - Address RFC comments- Added regmap, and snd_soc calls
removed debug code, address checkpatch errors -https://patchwork.kernel.org/patch/4378281/
.../devicetree/bindings/sound/tas2552.txt | 26 +
include/sound/tas2552-plat.h | 25 +
sound/soc/codecs/Kconfig | 5 +
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/tas2552.c | 540 ++++++++++++++++++++
sound/soc/codecs/tas2552.h | 129 +++++
6 files changed, 727 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..55e2a0a
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/tas2552.txt
@@ -0,0 +1,26 @@
+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
+ - supply-*: Required supply regulators are:
+ "vbat" battery voltage
+ "iovdd" I/O Voltage
+ "avdd" Analog DAC Voltage
+
+Optional properties:
+ - enable-gpio - gpio pin to enable/disable the device
+
+Example:
+
+tas2552: tas2552 at 41 {
+ compatible = "ti,tas2552";
+ reg = <0x41>;
+ enable-gpio = <&gpio4 2 GPIO_ACTIVE_HIGH>;
+};
+
+For more product information please see the link below:
+http://www.ti.com/product/TAS2552
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 at 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..fbaa329 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -91,6 +91,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_STA350 if I2C
select SND_SOC_STA529 if I2C
select SND_SOC_STAC9766 if SND_SOC_AC97_BUS
+ select SND_SOC_TAS2552 if I2C
select SND_SOC_TAS5086 if I2C
select SND_SOC_TLV320AIC23_I2C if I2C
select SND_SOC_TLV320AIC23_SPI if SPI_MASTER
@@ -521,6 +522,10 @@ config SND_SOC_STA529
config SND_SOC_STAC9766
tristate
+config SND_SOC_TAS2552
+ tristate "Texas Instruments TAS2552 Mono Audio 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 1bd6e1c..3f20ecd 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
@@ -255,6 +256,7 @@ obj-$(CONFIG_SND_SOC_STA32X) += snd-soc-sta32x.o
obj-$(CONFIG_SND_SOC_STA350) += snd-soc-sta350.o
obj-$(CONFIG_SND_SOC_STA529) += snd-soc-sta529.o
obj-$(CONFIG_SND_SOC_STAC9766) += snd-soc-stac9766.o
+obj-$(CONFIG_SND_SOC_TAS2552) += snd-soc-tas2552.o
obj-$(CONFIG_SND_SOC_TAS5086) += snd-soc-tas5086.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/tas2552.c b/sound/soc/codecs/tas2552.c
new file mode 100644
index 0000000..f0760af
--- /dev/null
+++ b/sound/soc/codecs/tas2552.c
@@ -0,0 +1,540 @@
+/*
+ * tas2552.c - ALSA SoC Texas Instruments TAS2552 Mono Audio Amplifier
+ *
+ * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com
+ *
+ * Author: Dan Murphy <dmurphy at 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/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.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, 0x22},
+ {TAS2552_CFG_3, 0x80},
+ {TAS2552_DOUT, 0x00},
+ {TAS2552_OUTPUT_DATA, 0xc0},
+ {TAS2552_PDM_CFG, 0x01},
+ {TAS2552_PGA_GAIN, 0x00},
+ {TAS2552_BOOST_PT_CTRL, 0x0f},
+ {TAS2552_RESERVED_0D, 0x00},
+ {TAS2552_LIMIT_RATE_HYS, 0x08},
+ {TAS2552_CFG_2, 0xef},
+ {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, 0x04},
+ {TAS2552_LIMIT_INT_COUNT, 0x00},
+ {TAS2552_EDGE_RATE_CTRL, 0x40},
+ {TAS2552_VBAT_DATA, 0x00},
+};
+
+#define TAS2552_NUM_SUPPLIES 3
+static const char *tas2552_supply_names[TAS2552_NUM_SUPPLIES] = {
+ "vbat", /* vbat voltage */
+ "iovdd", /* I/O Voltage */
+ "avdd", /* Analog DAC Voltage */
+};
+
+struct tas2552_data {
+ struct snd_soc_codec *codec;
+ struct regmap *regmap;
+ struct i2c_client *tas2552_client;
+ struct regulator_bulk_data supplies[TAS2552_NUM_SUPPLIES];
+ struct gpio_desc *enable_gpio;
+ unsigned char regs[TAS2552_VBAT_DATA];
+ unsigned int mclk;
+};
+
+static void tas2552_sw_shutdown(struct tas2552_data *tas_data, int sw_shutdown)
+{
+ u8 cfg1_reg;
+
+ if (sw_shutdown)
+ cfg1_reg = 0;
+ else
+ cfg1_reg = TAS2552_SWS_MASK;
+
+ snd_soc_update_bits(tas_data->codec, TAS2552_CFG_1,
+ TAS2552_SWS_MASK, cfg1_reg);
+}
+
+static int tas2552_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ struct tas2552_data *tas2552 = dev_get_drvdata(codec->dev);
+ int sample_rate, pll_clk;
+ int d;
+ u8 p, j;
+
+ /* Turn on Class D amplifier */
+ snd_soc_update_bits(codec, TAS2552_CFG_2, TAS2552_CLASSD_EN_MASK,
+ TAS2552_CLASSD_EN);
+
+ if (!tas2552->mclk)
+ return -EINVAL;
+
+ snd_soc_update_bits(codec, TAS2552_CFG_2, TAS2552_PLL_ENABLE, 0);
+
+ if (tas2552->mclk == TAS2552_245MHZ_CLK ||
+ tas2552->mclk == TAS2552_225MHZ_CLK) {
+ /* By pass the PLL configuration */
+ snd_soc_update_bits(codec, TAS2552_PLL_CTRL_2,
+ TAS2552_PLL_BYPASS_MASK,
+ TAS2552_PLL_BYPASS);
+ } else {
+ /* 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
+ */
+ p = snd_soc_read(codec, TAS2552_PLL_CTRL_1);
+ p = (p >> 7);
+ sample_rate = params_rate(params);
+
+ if (sample_rate == 48000)
+ pll_clk = TAS2552_245MHZ_CLK;
+ else if (sample_rate == 44100)
+ pll_clk = TAS2552_225MHZ_CLK;
+ else {
+ dev_vdbg(codec->dev, "Substream sample rate is not found %i\n",
+ params_rate(params));
+ return -EINVAL;
+ }
+
+ j = (pll_clk * 2 * (1 << p)) / tas2552->mclk;
+ d = (pll_clk * 2 * (1 << p)) % tas2552->mclk;
+
+ snd_soc_update_bits(codec, TAS2552_PLL_CTRL_1,
+ TAS2552_PLL_J_MASK, j);
+ snd_soc_write(codec, TAS2552_PLL_CTRL_2,
+ (d >> 7) & TAS2552_PLL_D_UPPER_MASK);
+ snd_soc_write(codec, TAS2552_PLL_CTRL_3,
+ d & TAS2552_PLL_D_LOWER_MASK);
+
+ }
+
+ snd_soc_update_bits(codec, TAS2552_CFG_2, TAS2552_PLL_ENABLE,
+ TAS2552_PLL_ENABLE);
+
+ return 0;
+}
+
+static int tas2552_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ u8 serial_format;
+ u8 serial_control_mask;
+
+ 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:
+ dev_vdbg(codec->dev, "DAI Format master is not found\n");
+ return -EINVAL;
+ }
+
+ serial_control_mask = TAS2552_BIT_CLK_MASK | TAS2552_WORD_CLK_MASK;
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ serial_format &= TAS2552_DAIFMT_I2S_MASK;
+ 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:
+ dev_vdbg(codec->dev, "DAI Format is not found\n");
+ return -EINVAL;
+ }
+
+ if (fmt & SND_SOC_DAIFMT_FORMAT_MASK)
+ serial_control_mask |= TAS2552_DATA_FORMAT_MASK;
+
+ snd_soc_update_bits(codec, TAS2552_SER_CTRL_1, serial_control_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 *tas2552 = dev_get_drvdata(codec->dev);
+
+ tas2552->mclk = freq;
+
+ return 0;
+}
+
+static int tas2552_mute(struct snd_soc_dai *dai, int mute)
+{
+ u8 cfg1_reg;
+ 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;
+}
+
+#ifdef CONFIG_PM_RUNTIME
+static int tas2552_runtime_suspend(struct device *dev)
+{
+ struct tas2552_data *tas2552 = dev_get_drvdata(dev);
+
+ tas2552_sw_shutdown(tas2552, 0);
+
+ if (tas2552->enable_gpio)
+ gpiod_set_value(tas2552->enable_gpio, 0);
+
+ regcache_cache_only(tas2552->regmap, true);
+ regcache_mark_dirty(tas2552->regmap);
+
+ return 0;
+}
+
+static int tas2552_runtime_resume(struct device *dev)
+{
+ struct tas2552_data *tas2552 = dev_get_drvdata(dev);
+
+ if (tas2552->enable_gpio)
+ gpiod_set_value(tas2552->enable_gpio, 1);
+
+ tas2552_sw_shutdown(tas2552, 1);
+
+ regcache_cache_only(tas2552->regmap, false);
+ regcache_sync(tas2552->regmap);
+
+ return 0;
+}
+#endif
+
+static const struct dev_pm_ops tas2552_pm = {
+ SET_RUNTIME_PM_OPS(tas2552_runtime_suspend, tas2552_runtime_resume,
+ NULL)
+};
+
+static void tas2552_shutdown(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_codec *codec = dai->codec;
+
+ snd_soc_update_bits(codec, TAS2552_CFG_2, TAS2552_PLL_ENABLE, 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,
+ .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 const struct reg_default tas2552_init_regs[] = {
+ { TAS2552_RESERVED_0D, 0xc0 },
+};
+
+static int tas2552_codec_probe(struct snd_soc_codec *codec)
+{
+ struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec);
+ int ret;
+
+ tas2552->codec = codec;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies),
+ tas2552->supplies);
+
+ if (ret != 0) {
+ dev_err(codec->dev, "Failed to enable supplies: %d\n",
+ ret);
+ return ret;
+ }
+
+ if (tas2552->enable_gpio)
+ gpiod_set_value(tas2552->enable_gpio, 1);
+
+ ret = pm_runtime_get_sync(codec->dev);
+ if (ret < 0) {
+ dev_err(codec->dev, "Enabling device failed: %d\n",
+ ret);
+ goto probe_fail;
+ }
+
+ snd_soc_write(codec, TAS2552_CFG_1, TAS2552_MUTE_MASK |
+ TAS2552_PLL_SRC_BCLK);
+ snd_soc_write(codec, TAS2552_CFG_3, TAS2552_I2S_OUT_SEL |
+ TAS2552_DIN_SRC_SEL_AVG_L_R | TAS2552_88_96KHZ);
+ snd_soc_write(codec, TAS2552_DOUT, TAS2552_PDM_DATA_I);
+ snd_soc_write(codec, TAS2552_OUTPUT_DATA, TAS2552_PDM_DATA_V_I | 0x8);
+ snd_soc_write(codec, TAS2552_PDM_CFG, TAS2552_PDM_BCLK_SEL);
+ snd_soc_write(codec, TAS2552_BOOST_PT_CTRL, TAS2552_APT_DELAY_200 |
+ TAS2552_APT_THRESH_2_1_7);
+
+ ret = regmap_register_patch(tas2552->regmap, tas2552_init_regs,
+ ARRAY_SIZE(tas2552_init_regs));
+ if (ret != 0) {
+ dev_err(codec->dev, "Failed to write init registers: %d\n",
+ ret);
+ goto patch_fail;
+ }
+
+ snd_soc_write(codec, TAS2552_CFG_2, TAS2552_CLASSD_EN |
+ TAS2552_BOOST_EN | TAS2552_APT_EN |
+ TAS2552_LIM_EN);
+ return 0;
+
+patch_fail:
+ pm_runtime_put(codec->dev);
+probe_fail:
+ if (tas2552->enable_gpio)
+ gpiod_set_value(tas2552->enable_gpio, 0);
+
+ regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies),
+ tas2552->supplies);
+ return -EIO;
+}
+
+static int tas2552_codec_remove(struct snd_soc_codec *codec)
+{
+ struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec);
+
+ if (tas2552->enable_gpio)
+ gpiod_set_value(tas2552->enable_gpio, 0);
+
+ return 0;
+};
+
+#ifdef CONFIG_PM
+static int tas2552_suspend(struct snd_soc_codec *codec)
+{
+ struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec);
+ int ret;
+
+ ret = regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies),
+ tas2552->supplies);
+
+ if (ret != 0)
+ dev_err(codec->dev, "Failed to disable supplies: %d\n",
+ ret);
+ return 0;
+}
+
+static int tas2552_resume(struct snd_soc_codec *codec)
+{
+ struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec);
+ int ret;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies),
+ tas2552->supplies);
+
+ if (ret != 0) {
+ dev_err(codec->dev, "Failed to enable supplies: %d\n",
+ ret);
+ }
+
+ return 0;
+}
+#else
+#define tas2552_suspend NULL
+#define tas2552_resume NULL
+#endif
+
+static struct snd_soc_codec_driver soc_codec_dev_tas2552 = {
+ .probe = tas2552_codec_probe,
+ .remove = tas2552_codec_remove,
+ .suspend = tas2552_suspend,
+ .resume = tas2552_resume,
+ .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;
+ int ret;
+ int i;
+
+ dev = &client->dev;
+ data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
+ if (data == NULL)
+ return -ENOMEM;
+
+ data->enable_gpio = devm_gpiod_get(dev, "enable");
+ if (IS_ERR(data->enable_gpio)) {
+ ret = PTR_ERR(data->enable_gpio);
+ if (ret != -ENOENT && ret != -ENOSYS)
+ return ret;
+
+ data->enable_gpio = NULL;
+ } else {
+ gpiod_direction_output(data->enable_gpio, 0);
+ }
+
+ 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;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(data->supplies); i++)
+ data->supplies[i].supply = tas2552_supply_names[i];
+
+ ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->supplies),
+ data->supplies);
+ if (ret != 0)
+ dev_err(dev, "Failed to request supplies: %d\n", ret);
+
+ pm_runtime_set_active(&client->dev);
+ pm_runtime_set_autosuspend_delay(&client->dev, 1000);
+ pm_runtime_use_autosuspend(&client->dev);
+ pm_runtime_enable(&client->dev);
+ pm_runtime_mark_last_busy(&client->dev);
+ pm_runtime_put_sync_autosuspend(&client->dev);
+
+ dev_set_drvdata(&client->dev, data);
+
+ 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;
+}
+
+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", 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",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(tas2552_of_match),
+ .pm = &tas2552_pm,
+ },
+ .probe = tas2552_probe,
+ .remove = tas2552_i2c_remove,
+ .id_table = tas2552_id,
+};
+
+module_i2c_driver(tas2552_i2c_driver);
+
+MODULE_AUTHOR("Dan Muprhy <dmurphy at 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..6cea8f3
--- /dev/null
+++ b/sound/soc/codecs/tas2552.h
@@ -0,0 +1,129 @@
+/*
+ * tas2552.h - ALSA SoC Texas Instruments TAS2552 Mono Audio Amplifier
+ *
+ * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com
+ *
+ * Author: Dan Murphy <dmurphy at 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_RESERVED_0D 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)
+
+/* CFG2 Register Masks */
+#define TAS2552_CLASSD_EN (1 << 7)
+#define TAS2552_BOOST_EN (1 << 6)
+#define TAS2552_APT_EN (1 << 5)
+#define TAS2552_PLL_ENABLE (1 << 3)
+#define TAS2552_LIM_EN (1 << 2)
+#define TAS2552_IVSENSE_EN (1 << 1)
+
+/* CFG3 Register Masks */
+#define TAS2552_WORD_CLK_MASK (1 << 7)
+#define TAS2552_BIT_CLK_MASK (1 << 6)
+#define TAS2552_DATA_FORMAT_MASK (0x11 << 2)
+
+#define TAS2552_DAIFMT_I2S_MASK 0xf3
+#define TAS2552_DAIFMT_DSP (1 << 3)
+#define TAS2552_DAIFMT_RIGHT_J (1 << 4)
+#define TAS2552_DAIFMT_LEFT_J (0x11 << 3)
+
+#define TAS2552_PLL_SRC_MCLK 0x00
+#define TAS2552_PLL_SRC_BCLK (1 << 3)
+#define TAS2552_PLL_SRC_IVCLKIN (1 << 4)
+#define TAS2552_PLL_SRC_1_8_FIXED (0x11 << 3)
+
+#define TAS2552_DIN_SRC_SEL_MUTED 0x00
+#define TAS2552_DIN_SRC_SEL_LEFT (1 << 4)
+#define TAS2552_DIN_SRC_SEL_RIGHT (1 << 5)
+#define TAS2552_DIN_SRC_SEL_AVG_L_R (0x11 << 4)
+
+#define TAS2552_PDM_IN_SEL (1 << 5)
+#define TAS2552_I2S_OUT_SEL (1 << 6)
+#define TAS2552_ANALOG_IN_SEL (1 << 7)
+
+/* CFG3 WCLK Dividers */
+#define TAS2552_8KHZ 0x00
+#define TAS2552_11_12KHZ (1 << 1)
+#define TAS2552_16KHZ (1 << 2)
+#define TAS2552_22_24KHZ (1 << 3)
+#define TAS2552_32KHZ (1 << 4)
+#define TAS2552_44_48KHZ (1 << 5)
+#define TAS2552_88_96KHZ (1 << 6)
+#define TAS2552_176_192KHZ (1 << 7)
+
+/* OUTPUT_DATA register */
+#define TAS2552_PDM_DATA_I 0x00
+#define TAS2552_PDM_DATA_V (1 << 6)
+#define TAS2552_PDM_DATA_I_V (1 << 7)
+#define TAS2552_PDM_DATA_V_I (0x11 << 6)
+
+/* PDM CFG Register */
+#define TAS2552_PDM_DATA_ES_RISE 0x4
+
+#define TAS2552_PDM_PLL_CLK_SEL 0x00
+#define TAS2552_PDM_IV_CLK_SEL (1 << 1)
+#define TAS2552_PDM_BCLK_SEL (1 << 2)
+#define TAS2552_PDM_MCLK_SEL (1 << 3)
+
+/* Boost pass-through register */
+#define TAS2552_APT_DELAY_50 0x00
+#define TAS2552_APT_DELAY_75 (1 << 1)
+#define TAS2552_APT_DELAY_125 (1 << 2)
+#define TAS2552_APT_DELAY_200 (1 << 3)
+
+#define TAS2552_APT_THRESH_2_5 0x00
+#define TAS2552_APT_THRESH_1_7 (1 << 3)
+#define TAS2552_APT_THRESH_1_4_1_1 (1 << 4)
+#define TAS2552_APT_THRESH_2_1_7 (0x11 << 2)
+
+/* PLL Control Register */
+#define TAS2552_245MHZ_CLK 24576000
+#define TAS2552_225MHZ_CLK 22579200
+#define TAS2552_PLL_J_MASK 0x7f
+#define TAS2552_PLL_D_UPPER_MASK 0x3f
+#define TAS2552_PLL_D_LOWER_MASK 0xff
+#define TAS2552_PLL_BYPASS_MASK 0x80
+#define TAS2552_PLL_BYPASS 0x80
+
+#endif
--
1.7.9.5
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