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linux/sound/soc/codecs/tas5086.c
Dmitry Torokhov 5f83ee4b1f
ASoC: tas5086: use sleeping variants of gpiod API 
The driver does not access reset GPIO in atomic contexts so it is usable
with GPIOs that may sleep during access. Switch to using
gpiod_set_value_cansleep().

Also the reset GPIO is configured as output at the time it is acquired,
there is no need to use gpiod_direction_output() when executing reset
sequence.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Link: https://patch.msgid.link/ZsPty8oNMQk4YTl1@google.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2024-08-20 12:59:17 +01:00

996 lines
28 KiB
C
Raw Blame History

// 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 0x00 /* Clock control register */
#define TAS5086_CLOCK_RATE(val) (val << 5)
#define TAS5086_CLOCK_RATE_MASK (0x7 << 5)
#define TAS5086_CLOCK_RATIO(val) (val << 2)
#define TAS5086_CLOCK_RATIO_MASK (0x7 << 2)
#define TAS5086_CLOCK_SCLK_RATIO_48 (1 << 1)
#define TAS5086_CLOCK_VALID (1 << 0)
#define TAS5086_DEEMPH_MASK 0x03
#define TAS5086_SOFT_MUTE_ALL 0x3f
#define TAS5086_DEV_ID 0x01 /* Device ID register */
#define TAS5086_ERROR_STATUS 0x02 /* Error status register */
#define TAS5086_SYS_CONTROL_1 0x03 /* System control register 1 */
#define TAS5086_SERIAL_DATA_IF 0x04 /* Serial data interface register */
#define TAS5086_SYS_CONTROL_2 0x05 /* System control register 2 */
#define TAS5086_SOFT_MUTE 0x06 /* Soft mute register */
#define TAS5086_MASTER_VOL 0x07 /* Master volume */
#define TAS5086_CHANNEL_VOL(X) (0x08 + (X)) /* Channel 1-6 volume */
#define TAS5086_VOLUME_CONTROL 0x09 /* Volume control register */
#define TAS5086_MOD_LIMIT 0x10 /* Modulation limit register */
#define TAS5086_PWM_START 0x18 /* PWM start register */
#define TAS5086_SURROUND 0x19 /* Surround register */
#define TAS5086_SPLIT_CAP_CHARGE 0x1a /* Split cap charge period register */
#define TAS5086_OSC_TRIM 0x1b /* Oscillator trim register */
#define TAS5086_BKNDERR 0x1c
#define TAS5086_INPUT_MUX 0x20
#define TAS5086_PWM_OUTPUT_MUX 0x25
#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 (0x3f)
/*
* Default TAS5086 power-up configuration
*/
static const struct reg_default tas5086_reg_defaults[] = {
{ 0x00, 0x6c },
{ 0x01, 0x03 },
{ 0x02, 0x00 },
{ 0x03, 0xa0 },
{ 0x04, 0x05 },
{ 0x05, 0x60 },
{ 0x06, 0x00 },
{ 0x07, 0xff },
{ 0x08, 0x30 },
{ 0x09, 0x30 },
{ 0x0a, 0x30 },
{ 0x0b, 0x30 },
{ 0x0c, 0x30 },
{ 0x0d, 0x30 },
{ 0x0e, 0xb1 },
{ 0x0f, 0x00 },
{ 0x10, 0x02 },
{ 0x11, 0x00 },
{ 0x12, 0x00 },
{ 0x13, 0x00 },
{ 0x14, 0x00 },
{ 0x15, 0x00 },
{ 0x16, 0x00 },
{ 0x17, 0x00 },
{ 0x18, 0x3f },
{ 0x19, 0x00 },
{ 0x1a, 0x18 },
{ 0x1b, 0x82 },
{ 0x1c, 0x05 },
};
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 0x0f:
case 0x11 ... 0x17:
case 0x1d ... 0x1f:
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 = 0x00;
break;
case SND_SOC_DAIFMT_I2S:
val = 0x03;
break;
case SND_SOC_DAIFMT_LEFT_J:
val = 0x06;
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 + 0x08);
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, 0x00);
if (ret < 0)
return ret;
/* start all channels */
ret = regmap_write(priv->regmap, TAS5086_SYS_CONTROL_2, 0x20);
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, 0xff, 1, tas5086_dac_tlv),
SOC_DOUBLE_R_TLV("Channel 1/2 Playback Volume",
TAS5086_CHANNEL_VOL(0), TAS5086_CHANNEL_VOL(1),
0, 0xff, 1, tas5086_dac_tlv),
SOC_DOUBLE_R_TLV("Channel 3/4 Playback Volume",
TAS5086_CHANNEL_VOL(2), TAS5086_CHANNEL_VOL(3),
0, 0xff, 1, tas5086_dac_tlv),
SOC_DOUBLE_R_TLV("Channel 5/6 Playback Volume",
TAS5086_CHANNEL_VOL(4), TAS5086_CHANNEL_VOL(5),
0, 0xff, 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, 0x60);
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, 0x30);
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 != 0x3) {
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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