// SPDX-License-Identifier: GPL-2.0-or-later
/*
* TAS5086 ASoC codec driver
*
* Copyright (c) 2013 Daniel Mack <zonque@gmail.com>
*
* TODO:
* - implement DAPM and input muxing
* - implement modulation limit
* - implement non-default PWM start
*
* Note that this chip has a very unusual register layout, specifically
* because the registers are of unequal size, and multi-byte registers
* require bulk writes to take effect. Regmap does not support that kind
* of devices.
*
* Currently, the driver does not touch any of the registers >= 0x20, so
* it doesn't matter because the entire map can be accessed as 8-bit
* array. In case more features will be added in the future
* that require access to higher registers, the entire regmap H/W I/O
* routines have to be open-coded.
*/
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/spi/spi.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include <sound/tas5086.h>
#define TAS5086_PCM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
SNDRV_PCM_FMTBIT_S20_3LE | \
SNDRV_PCM_FMTBIT_S24_3LE)
#define TAS5086_PCM_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | \
SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 | \
SNDRV_PCM_RATE_192000)
/*
* TAS5086 registers
*/
#define TAS5086_CLOCK_CONTROL 0 x00 /* Clock control register */
#define TAS5086_CLOCK_RATE(val) (val << 5 )
#define TAS5086_CLOCK_RATE_MASK (0 x7 << 5 )
#define TAS5086_CLOCK_RATIO(val) (val << 2 )
#define TAS5086_CLOCK_RATIO_MASK (0 x7 << 2 )
#define TAS5086_CLOCK_SCLK_RATIO_48 (1 << 1 )
#define TAS5086_CLOCK_VALID (1 << 0 )
#define TAS5086_DEEMPH_MASK 0 x03
#define TAS5086_SOFT_MUTE_ALL 0 x3f
#define TAS5086_DEV_ID 0 x01 /* Device ID register */
#define TAS5086_ERROR_STATUS 0 x02 /* Error status register */
#define TAS5086_SYS_CONTROL_1 0 x03 /* System control register 1 */
#define TAS5086_SERIAL_DATA_IF 0 x04 /* Serial data interface register */
#define TAS5086_SYS_CONTROL_2 0 x05 /* System control register 2 */
#define TAS5086_SOFT_MUTE 0 x06 /* Soft mute register */
#define TAS5086_MASTER_VOL 0 x07 /* Master volume */
#define TAS5086_CHANNEL_VOL(X) (0 x08 + (X)) /* Channel 1-6 volume */
#define TAS5086_VOLUME_CONTROL 0 x09 /* Volume control register */
#define TAS5086_MOD_LIMIT 0 x10 /* Modulation limit register */
#define TAS5086_PWM_START 0 x18 /* PWM start register */
#define TAS5086_SURROUND 0 x19 /* Surround register */
#define TAS5086_SPLIT_CAP_CHARGE 0 x1a /* Split cap charge period register */
#define TAS5086_OSC_TRIM 0 x1b /* Oscillator trim register */
#define TAS5086_BKNDERR 0 x1c
#define TAS5086_INPUT_MUX 0 x20
#define TAS5086_PWM_OUTPUT_MUX 0 x25
#define TAS5086_MAX_REGISTER TAS5086_PWM_OUTPUT_MUX
#define TAS5086_PWM_START_MIDZ_FOR_START_1 (1 << 7 )
#define TAS5086_PWM_START_MIDZ_FOR_START_2 (1 << 6 )
#define TAS5086_PWM_START_CHANNEL_MASK (0 x3f)
/*
* Default TAS5086 power-up configuration
*/
static const struct reg_default tas5086_reg_defaults[] = {
{ 0 x00, 0 x6c },
{ 0 x01, 0 x03 },
{ 0 x02, 0 x00 },
{ 0 x03, 0 xa0 },
{ 0 x04, 0 x05 },
{ 0 x05, 0 x60 },
{ 0 x06, 0 x00 },
{ 0 x07, 0 xff },
{ 0 x08, 0 x30 },
{ 0 x09, 0 x30 },
{ 0 x0a, 0 x30 },
{ 0 x0b, 0 x30 },
{ 0 x0c, 0 x30 },
{ 0 x0d, 0 x30 },
{ 0 x0e, 0 xb1 },
{ 0 x0f, 0 x00 },
{ 0 x10, 0 x02 },
{ 0 x11, 0 x00 },
{ 0 x12, 0 x00 },
{ 0 x13, 0 x00 },
{ 0 x14, 0 x00 },
{ 0 x15, 0 x00 },
{ 0 x16, 0 x00 },
{ 0 x17, 0 x00 },
{ 0 x18, 0 x3f },
{ 0 x19, 0 x00 },
{ 0 x1a, 0 x18 },
{ 0 x1b, 0 x82 },
{ 0 x1c, 0 x05 },
};
static int tas5086_register_size(struct device *dev, unsigned int reg)
{
switch (reg) {
case TAS5086_CLOCK_CONTROL ... TAS5086_BKNDERR:
return 1 ;
case TAS5086_INPUT_MUX:
case TAS5086_PWM_OUTPUT_MUX:
return 4 ;
}
dev_err(dev, "Unsupported register address: %d\n" , reg);
return 0 ;
}
static bool tas5086_accessible_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case 0 x0f:
case 0 x11 ... 0 x17:
case 0 x1d ... 0 x1f:
return false ;
default :
return true ;
}
}
static bool tas5086_volatile_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case TAS5086_DEV_ID:
case TAS5086_ERROR_STATUS:
return true ;
}
return false ;
}
static bool tas5086_writeable_reg(struct device *dev, unsigned int reg)
{
return tas5086_accessible_reg(dev, reg) && (reg != TAS5086_DEV_ID);
}
static int tas5086_reg_write(void *context, unsigned int reg,
unsigned int value)
{
struct i2c_client *client = context;
unsigned int i, size;
uint8_t buf[5 ];
int ret;
size = tas5086_register_size(&client->dev, reg);
if (size == 0 )
return -EINVAL;
buf[0 ] = reg;
for (i = size; i >= 1 ; --i) {
buf[i] = value;
value >>= 8 ;
}
ret = i2c_master_send(client, buf, size + 1 );
if (ret == size + 1 )
return 0 ;
else if (ret < 0 )
return ret;
else
return -EIO;
}
static int tas5086_reg_read(void *context, unsigned int reg,
unsigned int *value)
{
struct i2c_client *client = context;
uint8_t send_buf, recv_buf[4 ];
struct i2c_msg msgs[2 ];
unsigned int size;
unsigned int i;
int ret;
size = tas5086_register_size(&client->dev, reg);
if (size == 0 )
return -EINVAL;
send_buf = reg;
msgs[0 ].addr = client->addr;
msgs[0 ].len = sizeof (send_buf);
msgs[0 ].buf = &send_buf;
msgs[0 ].flags = 0 ;
msgs[1 ].addr = client->addr;
msgs[1 ].len = size;
msgs[1 ].buf = recv_buf;
msgs[1 ].flags = I2C_M_RD;
ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
if (ret < 0 )
return ret;
else if (ret != ARRAY_SIZE(msgs))
return -EIO;
*value = 0 ;
for (i = 0 ; i < size; i++) {
*value <<= 8 ;
*value |= recv_buf[i];
}
return 0 ;
}
static const char * const supply_names[] = {
"dvdd" , "avdd"
};
struct tas5086_private {
struct regmap *regmap;
unsigned int mclk, sclk;
unsigned int format;
bool deemph;
unsigned int charge_period;
unsigned int pwm_start_mid_z;
/* Current sample rate for de-emphasis control */
int rate;
/* GPIO driving Reset pin, if any */
struct gpio_desc *reset;
struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)];
};
static int tas5086_deemph[] = { 0 , 32000 , 44100 , 48000 };
static int tas5086_set_deemph(struct snd_soc_component *component)
{
struct tas5086_private *priv = snd_soc_component_get_drvdata(component);
int i, val = 0 ;
if (priv->deemph) {
for (i = 0 ; i < ARRAY_SIZE(tas5086_deemph); i++) {
if (tas5086_deemph[i] == priv->rate) {
val = i;
break ;
}
}
}
return regmap_update_bits(priv->regmap, TAS5086_SYS_CONTROL_1,
TAS5086_DEEMPH_MASK, val);
}
static int tas5086_get_deemph(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
struct tas5086_private *priv = snd_soc_component_get_drvdata(component);
ucontrol->value.integer.value[0 ] = priv->deemph;
return 0 ;
}
static int tas5086_put_deemph(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
struct tas5086_private *priv = snd_soc_component_get_drvdata(component);
priv->deemph = ucontrol->value.integer.value[0 ];
return tas5086_set_deemph(component);
}
static int tas5086_set_dai_sysclk(struct snd_soc_dai *codec_dai,
int clk_id, unsigned int freq, int dir)
{
struct snd_soc_component *component = codec_dai->component;
struct tas5086_private *priv = snd_soc_component_get_drvdata(component);
switch (clk_id) {
case TAS5086_CLK_IDX_MCLK:
priv->mclk = freq;
break ;
case TAS5086_CLK_IDX_SCLK:
priv->sclk = freq;
break ;
}
return 0 ;
}
static int tas5086_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int format)
{
struct snd_soc_component *component = codec_dai->component;
struct tas5086_private *priv = snd_soc_component_get_drvdata(component);
/* The TAS5086 can only be slave to all clocks */
if ((format & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) != SND_SOC_DAIFMT_CBC_CFC) {
dev_err(component->dev, "Invalid clocking mode\n" );
return -EINVAL;
}
/* we need to refer to the data format from hw_params() */
priv->format = format;
return 0 ;
}
static const int tas5086_sample_rates[] = {
32000 , 38000 , 44100 , 48000 , 88200 , 96000 , 176400 , 192000
};
static const int tas5086_ratios[] = {
64 , 128 , 192 , 256 , 384 , 512
};
static int index_in_array(const int *array, int len, int needle)
{
int i;
for (i = 0 ; i < len; i++)
if (array[i] == needle)
return i;
return -ENOENT;
}
static int tas5086_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 tas5086_private *priv = snd_soc_component_get_drvdata(component);
int val;
int ret;
priv->rate = params_rate(params);
/* Look up the sample rate and refer to the offset in the list */
val = index_in_array(tas5086_sample_rates,
ARRAY_SIZE(tas5086_sample_rates), priv->rate);
if (val < 0 ) {
dev_err(component->dev, "Invalid sample rate\n" );
return -EINVAL;
}
ret = regmap_update_bits(priv->regmap, TAS5086_CLOCK_CONTROL,
TAS5086_CLOCK_RATE_MASK,
TAS5086_CLOCK_RATE(val));
if (ret < 0 )
return ret;
/* MCLK / Fs ratio */
val = index_in_array(tas5086_ratios, ARRAY_SIZE(tas5086_ratios),
priv->mclk / priv->rate);
if (val < 0 ) {
dev_err(component->dev, "Invalid MCLK / Fs ratio\n" );
return -EINVAL;
}
ret = regmap_update_bits(priv->regmap, TAS5086_CLOCK_CONTROL,
TAS5086_CLOCK_RATIO_MASK,
TAS5086_CLOCK_RATIO(val));
if (ret < 0 )
return ret;
ret = regmap_update_bits(priv->regmap, TAS5086_CLOCK_CONTROL,
TAS5086_CLOCK_SCLK_RATIO_48,
(priv->sclk == 48 * priv->rate) ?
TAS5086_CLOCK_SCLK_RATIO_48 : 0 );
if (ret < 0 )
return ret;
/*
* The chip has a very unituitive register mapping and muxes information
* about data format and sample depth into the same register, but not on
* a logical bit-boundary. Hence, we have to refer to the format passed
* in the set_dai_fmt() callback and set up everything from here.
*
* First, determine the 'base' value, using the format ...
*/
switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_RIGHT_J:
val = 0 x00;
break ;
case SND_SOC_DAIFMT_I2S:
val = 0 x03;
break ;
case SND_SOC_DAIFMT_LEFT_J:
val = 0 x06;
break ;
default :
dev_err(component->dev, "Invalid DAI format\n" );
return -EINVAL;
}
/* ... then add the offset for the sample bit depth. */
switch (params_width(params)) {
case 16 :
val += 0 ;
break ;
case 20 :
val += 1 ;
break ;
case 24 :
val += 2 ;
break ;
default :
dev_err(component->dev, "Invalid bit width\n" );
return -EINVAL;
}
ret = regmap_write(priv->regmap, TAS5086_SERIAL_DATA_IF, val);
if (ret < 0 )
return ret;
/* clock is considered valid now */
ret = regmap_update_bits(priv->regmap, TAS5086_CLOCK_CONTROL,
TAS5086_CLOCK_VALID, TAS5086_CLOCK_VALID);
if (ret < 0 )
return ret;
return tas5086_set_deemph(component);
}
static int tas5086_mute_stream(struct snd_soc_dai *dai, int mute, int stream)
{
struct snd_soc_component *component = dai->component;
struct tas5086_private *priv = snd_soc_component_get_drvdata(component);
unsigned int val = 0 ;
if (mute)
val = TAS5086_SOFT_MUTE_ALL;
return regmap_write(priv->regmap, TAS5086_SOFT_MUTE, val);
}
static void tas5086_reset(struct tas5086_private *priv)
{
if (priv->reset) {
/* Reset codec - minimum assertion time is 400ns */
gpiod_set_value_cansleep(priv->reset, 1 );
udelay(1 );
gpiod_set_value_cansleep(priv->reset, 0 );
/* Codec needs ~15ms to wake up */
msleep(15 );
}
}
/* charge period values in microseconds */
static const int tas5086_charge_period[] = {
13000 , 16900 , 23400 , 31200 , 41600 , 54600 , 72800 , 96200 ,
130000 , 156000 , 234000 , 312000 , 416000 , 546000 , 728000 , 962000 ,
1300000 , 169000 , 2340000 , 3120000 , 4160000 , 5460000 , 7280000 , 9620000 ,
};
static int tas5086_init(struct device *dev, struct tas5086_private *priv)
{
int ret, i;
/*
* If any of the channels is configured to start in Mid-Z mode,
* configure 'part 1' of the PWM starts to use Mid-Z, and tell
* all configured mid-z channels to start under 'part 1'.
*/
if (priv->pwm_start_mid_z)
regmap_write(priv->regmap, TAS5086_PWM_START,
TAS5086_PWM_START_MIDZ_FOR_START_1 |
priv->pwm_start_mid_z);
/* lookup and set split-capacitor charge period */
if (priv->charge_period == 0 ) {
regmap_write(priv->regmap, TAS5086_SPLIT_CAP_CHARGE, 0 );
} else {
i = index_in_array(tas5086_charge_period,
ARRAY_SIZE(tas5086_charge_period),
priv->charge_period);
if (i >= 0 )
regmap_write(priv->regmap, TAS5086_SPLIT_CAP_CHARGE,
i + 0 x08);
else
dev_warn(dev,
"Invalid split-cap charge period of %d ns.\n" ,
priv->charge_period);
}
/* enable factory trim */
ret = regmap_write(priv->regmap, TAS5086_OSC_TRIM, 0 x00);
if (ret < 0 )
return ret;
/* start all channels */
ret = regmap_write(priv->regmap, TAS5086_SYS_CONTROL_2, 0 x20);
if (ret < 0 )
return ret;
/* mute all channels for now */
ret = regmap_write(priv->regmap, TAS5086_SOFT_MUTE,
TAS5086_SOFT_MUTE_ALL);
if (ret < 0 )
return ret;
return 0 ;
}
/* TAS5086 controls */
static const DECLARE_TLV_DB_SCALE(tas5086_dac_tlv, -10350 , 50 , 1 );
static const struct snd_kcontrol_new tas5086_controls[] = {
SOC_SINGLE_TLV("Master Playback Volume" , TAS5086_MASTER_VOL,
0 , 0 xff, 1 , tas5086_dac_tlv),
SOC_DOUBLE_R_TLV("Channel 1/2 Playback Volume" ,
TAS5086_CHANNEL_VOL(0 ), TAS5086_CHANNEL_VOL(1 ),
0 , 0 xff, 1 , tas5086_dac_tlv),
SOC_DOUBLE_R_TLV("Channel 3/4 Playback Volume" ,
TAS5086_CHANNEL_VOL(2 ), TAS5086_CHANNEL_VOL(3 ),
0 , 0 xff, 1 , tas5086_dac_tlv),
SOC_DOUBLE_R_TLV("Channel 5/6 Playback Volume" ,
TAS5086_CHANNEL_VOL(4 ), TAS5086_CHANNEL_VOL(5 ),
0 , 0 xff, 1 , tas5086_dac_tlv),
SOC_SINGLE_BOOL_EXT("De-emphasis Switch" , 0 ,
tas5086_get_deemph, tas5086_put_deemph),
};
/* Input mux controls */
static const char *tas5086_dapm_sdin_texts[] =
{
"SDIN1-L" , "SDIN1-R" , "SDIN2-L" , "SDIN2-R" ,
"SDIN3-L" , "SDIN3-R" , "Ground (0)" , "nc"
};
static const struct soc_enum tas5086_dapm_input_mux_enum[] = {
SOC_ENUM_SINGLE(TAS5086_INPUT_MUX, 20 , 8 , tas5086_dapm_sdin_texts),
SOC_ENUM_SINGLE(TAS5086_INPUT_MUX, 16 , 8 , tas5086_dapm_sdin_texts),
SOC_ENUM_SINGLE(TAS5086_INPUT_MUX, 12 , 8 , tas5086_dapm_sdin_texts),
SOC_ENUM_SINGLE(TAS5086_INPUT_MUX, 8 , 8 , tas5086_dapm_sdin_texts),
SOC_ENUM_SINGLE(TAS5086_INPUT_MUX, 4 , 8 , tas5086_dapm_sdin_texts),
SOC_ENUM_SINGLE(TAS5086_INPUT_MUX, 0 , 8 , tas5086_dapm_sdin_texts),
};
static const struct snd_kcontrol_new tas5086_dapm_input_mux_controls[] = {
SOC_DAPM_ENUM("Channel 1 input" , tas5086_dapm_input_mux_enum[0 ]),
SOC_DAPM_ENUM("Channel 2 input" , tas5086_dapm_input_mux_enum[1 ]),
SOC_DAPM_ENUM("Channel 3 input" , tas5086_dapm_input_mux_enum[2 ]),
SOC_DAPM_ENUM("Channel 4 input" , tas5086_dapm_input_mux_enum[3 ]),
SOC_DAPM_ENUM("Channel 5 input" , tas5086_dapm_input_mux_enum[4 ]),
SOC_DAPM_ENUM("Channel 6 input" , tas5086_dapm_input_mux_enum[5 ]),
};
/* Output mux controls */
static const char *tas5086_dapm_channel_texts[] =
{ "Channel 1 Mux" , "Channel 2 Mux" , "Channel 3 Mux" ,
"Channel 4 Mux" , "Channel 5 Mux" , "Channel 6 Mux" };
static const struct soc_enum tas5086_dapm_output_mux_enum[] = {
SOC_ENUM_SINGLE(TAS5086_PWM_OUTPUT_MUX, 20 , 6 , tas5086_dapm_channel_texts),
SOC_ENUM_SINGLE(TAS5086_PWM_OUTPUT_MUX, 16 , 6 , tas5086_dapm_channel_texts),
SOC_ENUM_SINGLE(TAS5086_PWM_OUTPUT_MUX, 12 , 6 , tas5086_dapm_channel_texts),
SOC_ENUM_SINGLE(TAS5086_PWM_OUTPUT_MUX, 8 , 6 , tas5086_dapm_channel_texts),
SOC_ENUM_SINGLE(TAS5086_PWM_OUTPUT_MUX, 4 , 6 , tas5086_dapm_channel_texts),
SOC_ENUM_SINGLE(TAS5086_PWM_OUTPUT_MUX, 0 , 6 , tas5086_dapm_channel_texts),
};
static const struct snd_kcontrol_new tas5086_dapm_output_mux_controls[] = {
SOC_DAPM_ENUM("PWM1 Output" , tas5086_dapm_output_mux_enum[0 ]),
SOC_DAPM_ENUM("PWM2 Output" , tas5086_dapm_output_mux_enum[1 ]),
SOC_DAPM_ENUM("PWM3 Output" , tas5086_dapm_output_mux_enum[2 ]),
SOC_DAPM_ENUM("PWM4 Output" , tas5086_dapm_output_mux_enum[3 ]),
SOC_DAPM_ENUM("PWM5 Output" , tas5086_dapm_output_mux_enum[4 ]),
SOC_DAPM_ENUM("PWM6 Output" , tas5086_dapm_output_mux_enum[5 ]),
};
static const struct snd_soc_dapm_widget tas5086_dapm_widgets[] = {
SND_SOC_DAPM_INPUT("SDIN1-L" ),
SND_SOC_DAPM_INPUT("SDIN1-R" ),
SND_SOC_DAPM_INPUT("SDIN2-L" ),
SND_SOC_DAPM_INPUT("SDIN2-R" ),
SND_SOC_DAPM_INPUT("SDIN3-L" ),
SND_SOC_DAPM_INPUT("SDIN3-R" ),
SND_SOC_DAPM_INPUT("SDIN4-L" ),
SND_SOC_DAPM_INPUT("SDIN4-R" ),
SND_SOC_DAPM_OUTPUT("PWM1" ),
SND_SOC_DAPM_OUTPUT("PWM2" ),
SND_SOC_DAPM_OUTPUT("PWM3" ),
SND_SOC_DAPM_OUTPUT("PWM4" ),
SND_SOC_DAPM_OUTPUT("PWM5" ),
SND_SOC_DAPM_OUTPUT("PWM6" ),
SND_SOC_DAPM_MUX("Channel 1 Mux" , SND_SOC_NOPM, 0 , 0 ,
&tas5086_dapm_input_mux_controls[0 ]),
SND_SOC_DAPM_MUX("Channel 2 Mux" , SND_SOC_NOPM, 0 , 0 ,
&tas5086_dapm_input_mux_controls[1 ]),
SND_SOC_DAPM_MUX("Channel 3 Mux" , SND_SOC_NOPM, 0 , 0 ,
&tas5086_dapm_input_mux_controls[2 ]),
SND_SOC_DAPM_MUX("Channel 4 Mux" , SND_SOC_NOPM, 0 , 0 ,
&tas5086_dapm_input_mux_controls[3 ]),
SND_SOC_DAPM_MUX("Channel 5 Mux" , SND_SOC_NOPM, 0 , 0 ,
&tas5086_dapm_input_mux_controls[4 ]),
SND_SOC_DAPM_MUX("Channel 6 Mux" , SND_SOC_NOPM, 0 , 0 ,
&tas5086_dapm_input_mux_controls[5 ]),
SND_SOC_DAPM_MUX("PWM1 Mux" , SND_SOC_NOPM, 0 , 0 ,
&tas5086_dapm_output_mux_controls[0 ]),
SND_SOC_DAPM_MUX("PWM2 Mux" , SND_SOC_NOPM, 0 , 0 ,
&tas5086_dapm_output_mux_controls[1 ]),
SND_SOC_DAPM_MUX("PWM3 Mux" , SND_SOC_NOPM, 0 , 0 ,
&tas5086_dapm_output_mux_controls[2 ]),
SND_SOC_DAPM_MUX("PWM4 Mux" , SND_SOC_NOPM, 0 , 0 ,
&tas5086_dapm_output_mux_controls[3 ]),
SND_SOC_DAPM_MUX("PWM5 Mux" , SND_SOC_NOPM, 0 , 0 ,
&tas5086_dapm_output_mux_controls[4 ]),
SND_SOC_DAPM_MUX("PWM6 Mux" , SND_SOC_NOPM, 0 , 0 ,
&tas5086_dapm_output_mux_controls[5 ]),
};
static const struct snd_soc_dapm_route tas5086_dapm_routes[] = {
/* SDIN inputs -> channel muxes */
{ "Channel 1 Mux" , "SDIN1-L" , "SDIN1-L" },
{ "Channel 1 Mux" , "SDIN1-R" , "SDIN1-R" },
{ "Channel 1 Mux" , "SDIN2-L" , "SDIN2-L" },
{ "Channel 1 Mux" , "SDIN2-R" , "SDIN2-R" },
{ "Channel 1 Mux" , "SDIN3-L" , "SDIN3-L" },
{ "Channel 1 Mux" , "SDIN3-R" , "SDIN3-R" },
{ "Channel 2 Mux" , "SDIN1-L" , "SDIN1-L" },
{ "Channel 2 Mux" , "SDIN1-R" , "SDIN1-R" },
{ "Channel 2 Mux" , "SDIN2-L" , "SDIN2-L" },
{ "Channel 2 Mux" , "SDIN2-R" , "SDIN2-R" },
{ "Channel 2 Mux" , "SDIN3-L" , "SDIN3-L" },
{ "Channel 2 Mux" , "SDIN3-R" , "SDIN3-R" },
{ "Channel 2 Mux" , "SDIN1-L" , "SDIN1-L" },
{ "Channel 2 Mux" , "SDIN1-R" , "SDIN1-R" },
{ "Channel 2 Mux" , "SDIN2-L" , "SDIN2-L" },
{ "Channel 2 Mux" , "SDIN2-R" , "SDIN2-R" },
{ "Channel 2 Mux" , "SDIN3-L" , "SDIN3-L" },
{ "Channel 2 Mux" , "SDIN3-R" , "SDIN3-R" },
{ "Channel 3 Mux" , "SDIN1-L" , "SDIN1-L" },
{ "Channel 3 Mux" , "SDIN1-R" , "SDIN1-R" },
{ "Channel 3 Mux" , "SDIN2-L" , "SDIN2-L" },
{ "Channel 3 Mux" , "SDIN2-R" , "SDIN2-R" },
{ "Channel 3 Mux" , "SDIN3-L" , "SDIN3-L" },
{ "Channel 3 Mux" , "SDIN3-R" , "SDIN3-R" },
{ "Channel 4 Mux" , "SDIN1-L" , "SDIN1-L" },
{ "Channel 4 Mux" , "SDIN1-R" , "SDIN1-R" },
{ "Channel 4 Mux" , "SDIN2-L" , "SDIN2-L" },
{ "Channel 4 Mux" , "SDIN2-R" , "SDIN2-R" },
{ "Channel 4 Mux" , "SDIN3-L" , "SDIN3-L" },
{ "Channel 4 Mux" , "SDIN3-R" , "SDIN3-R" },
{ "Channel 5 Mux" , "SDIN1-L" , "SDIN1-L" },
{ "Channel 5 Mux" , "SDIN1-R" , "SDIN1-R" },
{ "Channel 5 Mux" , "SDIN2-L" , "SDIN2-L" },
{ "Channel 5 Mux" , "SDIN2-R" , "SDIN2-R" },
{ "Channel 5 Mux" , "SDIN3-L" , "SDIN3-L" },
{ "Channel 5 Mux" , "SDIN3-R" , "SDIN3-R" },
{ "Channel 6 Mux" , "SDIN1-L" , "SDIN1-L" },
{ "Channel 6 Mux" , "SDIN1-R" , "SDIN1-R" },
{ "Channel 6 Mux" , "SDIN2-L" , "SDIN2-L" },
{ "Channel 6 Mux" , "SDIN2-R" , "SDIN2-R" },
{ "Channel 6 Mux" , "SDIN3-L" , "SDIN3-L" },
{ "Channel 6 Mux" , "SDIN3-R" , "SDIN3-R" },
/* Channel muxes -> PWM muxes */
{ "PWM1 Mux" , "Channel 1 Mux" , "Channel 1 Mux" },
{ "PWM2 Mux" , "Channel 1 Mux" , "Channel 1 Mux" },
{ "PWM3 Mux" , "Channel 1 Mux" , "Channel 1 Mux" },
{ "PWM4 Mux" , "Channel 1 Mux" , "Channel 1 Mux" },
{ "PWM5 Mux" , "Channel 1 Mux" , "Channel 1 Mux" },
{ "PWM6 Mux" , "Channel 1 Mux" , "Channel 1 Mux" },
{ "PWM1 Mux" , "Channel 2 Mux" , "Channel 2 Mux" },
{ "PWM2 Mux" , "Channel 2 Mux" , "Channel 2 Mux" },
{ "PWM3 Mux" , "Channel 2 Mux" , "Channel 2 Mux" },
{ "PWM4 Mux" , "Channel 2 Mux" , "Channel 2 Mux" },
{ "PWM5 Mux" , "Channel 2 Mux" , "Channel 2 Mux" },
{ "PWM6 Mux" , "Channel 2 Mux" , "Channel 2 Mux" },
{ "PWM1 Mux" , "Channel 3 Mux" , "Channel 3 Mux" },
{ "PWM2 Mux" , "Channel 3 Mux" , "Channel 3 Mux" },
{ "PWM3 Mux" , "Channel 3 Mux" , "Channel 3 Mux" },
{ "PWM4 Mux" , "Channel 3 Mux" , "Channel 3 Mux" },
{ "PWM5 Mux" , "Channel 3 Mux" , "Channel 3 Mux" },
{ "PWM6 Mux" , "Channel 3 Mux" , "Channel 3 Mux" },
{ "PWM1 Mux" , "Channel 4 Mux" , "Channel 4 Mux" },
{ "PWM2 Mux" , "Channel 4 Mux" , "Channel 4 Mux" },
{ "PWM3 Mux" , "Channel 4 Mux" , "Channel 4 Mux" },
{ "PWM4 Mux" , "Channel 4 Mux" , "Channel 4 Mux" },
{ "PWM5 Mux" , "Channel 4 Mux" , "Channel 4 Mux" },
{ "PWM6 Mux" , "Channel 4 Mux" , "Channel 4 Mux" },
{ "PWM1 Mux" , "Channel 5 Mux" , "Channel 5 Mux" },
{ "PWM2 Mux" , "Channel 5 Mux" , "Channel 5 Mux" },
{ "PWM3 Mux" , "Channel 5 Mux" , "Channel 5 Mux" },
{ "PWM4 Mux" , "Channel 5 Mux" , "Channel 5 Mux" },
{ "PWM5 Mux" , "Channel 5 Mux" , "Channel 5 Mux" },
{ "PWM6 Mux" , "Channel 5 Mux" , "Channel 5 Mux" },
{ "PWM1 Mux" , "Channel 6 Mux" , "Channel 6 Mux" },
{ "PWM2 Mux" , "Channel 6 Mux" , "Channel 6 Mux" },
{ "PWM3 Mux" , "Channel 6 Mux" , "Channel 6 Mux" },
{ "PWM4 Mux" , "Channel 6 Mux" , "Channel 6 Mux" },
{ "PWM5 Mux" , "Channel 6 Mux" , "Channel 6 Mux" },
{ "PWM6 Mux" , "Channel 6 Mux" , "Channel 6 Mux" },
/* The PWM muxes are directly connected to the PWM outputs */
{ "PWM1" , NULL, "PWM1 Mux" },
{ "PWM2" , NULL, "PWM2 Mux" },
{ "PWM3" , NULL, "PWM3 Mux" },
{ "PWM4" , NULL, "PWM4 Mux" },
{ "PWM5" , NULL, "PWM5 Mux" },
{ "PWM6" , NULL, "PWM6 Mux" },
};
static const struct snd_soc_dai_ops tas5086_dai_ops = {
.hw_params = tas5086_hw_params,
.set_sysclk = tas5086_set_dai_sysclk,
.set_fmt = tas5086_set_dai_fmt,
.mute_stream = tas5086_mute_stream,
};
static struct snd_soc_dai_driver tas5086_dai = {
.name = "tas5086-hifi" ,
.playback = {
.stream_name = "Playback" ,
.channels_min = 2 ,
.channels_max = 6 ,
.rates = TAS5086_PCM_RATES,
.formats = TAS5086_PCM_FORMATS,
},
.ops = &tas5086_dai_ops,
};
#ifdef CONFIG_PM
static int tas5086_soc_suspend(struct snd_soc_component *component)
{
struct tas5086_private *priv = snd_soc_component_get_drvdata(component);
int ret;
/* Shut down all channels */
ret = regmap_write(priv->regmap, TAS5086_SYS_CONTROL_2, 0 x60);
if (ret < 0 )
return ret;
regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);
return 0 ;
}
static int tas5086_soc_resume(struct snd_soc_component *component)
{
struct tas5086_private *priv = snd_soc_component_get_drvdata(component);
int ret;
ret = regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
if (ret < 0 )
return ret;
tas5086_reset(priv);
regcache_mark_dirty(priv->regmap);
ret = tas5086_init(component->dev, priv);
if (ret < 0 )
return ret;
ret = regcache_sync(priv->regmap);
if (ret < 0 )
return ret;
return 0 ;
}
#else
#define tas5086_soc_suspend NULL
#define tas5086_soc_resume NULL
#endif /* CONFIG_PM */
#ifdef CONFIG_OF
static const struct of_device_id tas5086_dt_ids[] = {
{ .compatible = "ti,tas5086" , },
{ }
};
MODULE_DEVICE_TABLE(of, tas5086_dt_ids);
#endif
static int tas5086_probe(struct snd_soc_component *component)
{
struct tas5086_private *priv = snd_soc_component_get_drvdata(component);
int i, ret;
ret = regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
if (ret < 0 ) {
dev_err(component->dev, "Failed to enable regulators: %d\n" , ret);
return ret;
}
priv->pwm_start_mid_z = 0 ;
priv->charge_period = 1300000 ; /* hardware default is 1300 ms */
if (of_match_device(of_match_ptr(tas5086_dt_ids), component->dev)) {
struct device_node *of_node = component->dev->of_node;
of_property_read_u32(of_node, "ti,charge-period" ,
&priv->charge_period);
for (i = 0 ; i < 6 ; i++) {
char name[25 ];
snprintf(name, sizeof (name),
"ti,mid-z-channel-%d" , i + 1 );
if (of_property_read_bool(of_node, name))
priv->pwm_start_mid_z |= 1 << i;
}
}
tas5086_reset(priv);
ret = tas5086_init(component->dev, priv);
if (ret < 0 )
goto exit_disable_regulators;
/* set master volume to 0 dB */
ret = regmap_write(priv->regmap, TAS5086_MASTER_VOL, 0 x30);
if (ret < 0 )
goto exit_disable_regulators;
return 0 ;
exit_disable_regulators:
regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);
return ret;
}
static void tas5086_remove(struct snd_soc_component *component)
{
struct tas5086_private *priv = snd_soc_component_get_drvdata(component);
if (priv->reset) {
/* Set codec to the reset state */
gpiod_set_value_cansleep(priv->reset, 1 );
}
regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);
};
static const struct snd_soc_component_driver soc_component_dev_tas5086 = {
.probe = tas5086_probe,
.remove = tas5086_remove,
.suspend = tas5086_soc_suspend,
.resume = tas5086_soc_resume,
.controls = tas5086_controls,
.num_controls = ARRAY_SIZE(tas5086_controls),
.dapm_widgets = tas5086_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(tas5086_dapm_widgets),
.dapm_routes = tas5086_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(tas5086_dapm_routes),
.idle_bias_on = 1 ,
.use_pmdown_time = 1 ,
.endianness = 1 ,
};
static const struct i2c_device_id tas5086_i2c_id[] = {
{ "tas5086" },
{ }
};
MODULE_DEVICE_TABLE(i2c, tas5086_i2c_id);
static const struct regmap_config tas5086_regmap = {
.reg_bits = 8 ,
.val_bits = 32 ,
.max_register = TAS5086_MAX_REGISTER,
.reg_defaults = tas5086_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(tas5086_reg_defaults),
.cache_type = REGCACHE_RBTREE,
.volatile_reg = tas5086_volatile_reg,
.writeable_reg = tas5086_writeable_reg,
.readable_reg = tas5086_accessible_reg,
.reg_read = tas5086_reg_read,
.reg_write = tas5086_reg_write,
};
static int tas5086_i2c_probe(struct i2c_client *i2c)
{
struct tas5086_private *priv;
struct device *dev = &i2c->dev;
int i, ret;
priv = devm_kzalloc(dev, sizeof (*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
for (i = 0 ; i < ARRAY_SIZE(supply_names); i++)
priv->supplies[i].supply = supply_names[i];
ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(priv->supplies),
priv->supplies);
if (ret < 0 ) {
dev_err(dev, "Failed to get regulators: %d\n" , ret);
return ret;
}
priv->regmap = devm_regmap_init(dev, NULL, i2c, &tas5086_regmap);
if (IS_ERR(priv->regmap)) {
ret = PTR_ERR(priv->regmap);
dev_err(&i2c->dev, "Failed to create regmap: %d\n" , ret);
return ret;
}
i2c_set_clientdata(i2c, priv);
/* Request line asserted */
priv->reset = devm_gpiod_get_optional(dev, "reset" , GPIOD_OUT_HIGH);
if (IS_ERR(priv->reset))
return PTR_ERR(priv->reset);
gpiod_set_consumer_name(priv->reset, "TAS5086 Reset" );
ret = regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
if (ret < 0 ) {
dev_err(dev, "Failed to enable regulators: %d\n" , ret);
return ret;
}
tas5086_reset(priv);
/* The TAS5086 always returns 0x03 in its TAS5086_DEV_ID register */
ret = regmap_read(priv->regmap, TAS5086_DEV_ID, &i);
if (ret == 0 && i != 0 x3) {
dev_err(dev,
"Failed to identify TAS5086 codec (got %02x)\n" , i);
ret = -ENODEV;
}
/*
* The chip has been identified, so we can turn off the power
* again until the dai link is set up.
*/
regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);
if (ret == 0 )
ret = devm_snd_soc_register_component(&i2c->dev,
&soc_component_dev_tas5086,
&tas5086_dai, 1 );
return ret;
}
static void tas5086_i2c_remove(struct i2c_client *i2c)
{}
static struct i2c_driver tas5086_i2c_driver = {
.driver = {
.name = "tas5086" ,
.of_match_table = of_match_ptr(tas5086_dt_ids),
},
.id_table = tas5086_i2c_id,
.probe = tas5086_i2c_probe,
.remove = tas5086_i2c_remove,
};
module_i2c_driver(tas5086_i2c_driver);
MODULE_AUTHOR("Daniel Mack <zonque@gmail.com>" );
MODULE_DESCRIPTION("Texas Instruments TAS5086 ALSA SoC Codec Driver" );
MODULE_LICENSE("GPL" );
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