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Commit aaa36d3a authored by Mark Brown's avatar Mark Brown
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Merge remote-tracking branch 'asoc/topic/tas5270' into asoc-next

parents 4c1c16d9 bd023ada
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Documentation/devicetree/bindings/sound/tas571x.txt
View file @ aaa36d3a
Texas Instruments TAS5711/TAS5717/TAS5719 stereo power amplifiers
Texas Instruments TAS5711/TAS5717/TAS5719/TAS5721 stereo power amplifiers
The codec is controlled through an I2C interface. It also has two other
signals that can be wired up to GPIOs: reset (strongly recommended), and
......@@ -6,7 +6,11 @@ powerdown (optional).
Required properties:
- compatible: "ti,tas5711", "ti,tas5717", or "ti,tas5719"
- compatible: should be one of the following:
- "ti,tas5711",
- "ti,tas5717",
- "ti,tas5719",
- "ti,tas5721"
- reg: The I2C address of the device
- #sound-dai-cells: must be equal to 0
......@@ -25,6 +29,8 @@ Optional properties:
- PVDD_B-supply: regulator phandle for the PVDD_B supply (5711)
- PVDD_C-supply: regulator phandle for the PVDD_C supply (5711)
- PVDD_D-supply: regulator phandle for the PVDD_D supply (5711)
- DRVDD-supply: regulator phandle for the DRVDD supply (5721)
- PVDD-supply: regulator phandle for the PVDD supply (5721)
Example:
......
Documentation/devicetree/bindings/sound/tas5720.txt 0 → 100644
View file @ aaa36d3a
Texas Instruments TAS5720 Mono Audio amplifier
The TAS5720 serial control bus communicates through the I2C protocol only. The
serial bus is also used for periodic codec fault checking/reporting during
audio playback. For more product information please see the links below:
http://www.ti.com/product/TAS5720L
http://www.ti.com/product/TAS5720M
Required properties:
- compatible : "ti,tas5720"
- reg : I2C slave address
- dvdd-supply : phandle to a 3.3-V supply for the digital circuitry
- pvdd-supply : phandle to a supply used for the Class-D amp and the analog
Example:
tas5720: tas5720@6c {
status = "okay";
compatible = "ti,tas5720";
reg = <0x6c>;
dvdd-supply = <&vdd_3v3_reg>;
pvdd-supply = <&amp_supply_reg>;
};
sound/soc/codecs/Kconfig
View file @ aaa36d3a
......@@ -127,6 +127,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_TAS2552 if I2C
select SND_SOC_TAS5086 if I2C
select SND_SOC_TAS571X if I2C
select SND_SOC_TAS5720 if I2C
select SND_SOC_TFA9879 if I2C
select SND_SOC_TLV320AIC23_I2C if I2C
select SND_SOC_TLV320AIC23_SPI if SPI_MASTER
......@@ -753,9 +754,16 @@ config SND_SOC_TAS5086
depends on I2C
config SND_SOC_TAS571X
tristate "Texas Instruments TAS5711/TAS5717/TAS5719 power amplifiers"
tristate "Texas Instruments TAS5711/TAS5717/TAS5719/TAS5721 power amplifiers"
depends on I2C
config SND_SOC_TAS5720
tristate "Texas Instruments TAS5720 Mono Audio amplifier"
depends on I2C
help
Enable support for Texas Instruments TAS5720L/M high-efficiency mono
Class-D audio power amplifiers.
config SND_SOC_TFA9879
tristate "NXP Semiconductors TFA9879 amplifier"
depends on I2C
......
sound/soc/codecs/Makefile
View file @ aaa36d3a
......@@ -132,6 +132,7 @@ snd-soc-stac9766-objs := stac9766.o
snd-soc-sti-sas-objs := sti-sas.o
snd-soc-tas5086-objs := tas5086.o
snd-soc-tas571x-objs := tas571x.o
snd-soc-tas5720-objs := tas5720.o
snd-soc-tfa9879-objs := tfa9879.o
snd-soc-tlv320aic23-objs := tlv320aic23.o
snd-soc-tlv320aic23-i2c-objs := tlv320aic23-i2c.o
......@@ -342,6 +343,7 @@ obj-$(CONFIG_SND_SOC_STI_SAS) += snd-soc-sti-sas.o
obj-$(CONFIG_SND_SOC_TAS2552) += snd-soc-tas2552.o
obj-$(CONFIG_SND_SOC_TAS5086) += snd-soc-tas5086.o
obj-$(CONFIG_SND_SOC_TAS571X) += snd-soc-tas571x.o
obj-$(CONFIG_SND_SOC_TAS5720) += snd-soc-tas5720.o
obj-$(CONFIG_SND_SOC_TFA9879) += snd-soc-tfa9879.o
obj-$(CONFIG_SND_SOC_TLV320AIC23) += snd-soc-tlv320aic23.o
obj-$(CONFIG_SND_SOC_TLV320AIC23_I2C) += snd-soc-tlv320aic23-i2c.o
......
sound/soc/codecs/tas571x.c
View file @ aaa36d3a
......@@ -4,6 +4,9 @@
* Copyright (C) 2015 Google, Inc.
* Copyright (c) 2013 Daniel Mack <zonque@gmail.com>
*
* TAS5721 support:
* Copyright (C) 2016 Petr Kulhavy, Barix AG <petr@barix.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
......@@ -57,6 +60,10 @@ static int tas571x_register_size(struct tas571x_private *priv, unsigned int reg)
case TAS571X_CH1_VOL_REG:
case TAS571X_CH2_VOL_REG:
return priv->chip->vol_reg_size;
case TAS571X_INPUT_MUX_REG:
case TAS571X_CH4_SRC_SELECT_REG:
case TAS571X_PWM_MUX_REG:
return 4;
default:
return 1;
}
......@@ -167,6 +174,23 @@ static int tas571x_hw_params(struct snd_pcm_substream *substream,
TAS571X_SDI_FMT_MASK, val);
}
static int tas571x_mute(struct snd_soc_dai *dai, int mute)
{
struct snd_soc_codec *codec = dai->codec;
u8 sysctl2;
int ret;
sysctl2 = mute ? TAS571X_SYS_CTRL_2_SDN_MASK : 0;
ret = snd_soc_update_bits(codec,
TAS571X_SYS_CTRL_2_REG,
TAS571X_SYS_CTRL_2_SDN_MASK,
sysctl2);
usleep_range(1000, 2000);
return ret;
}
static int tas571x_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
......@@ -214,6 +238,7 @@ static int tas571x_set_bias_level(struct snd_soc_codec *codec,
static const struct snd_soc_dai_ops tas571x_dai_ops = {
.set_fmt = tas571x_set_dai_fmt,
.hw_params = tas571x_hw_params,
.digital_mute = tas571x_mute,
};
static const char *const tas5711_supply_names[] = {
......@@ -241,6 +266,26 @@ static const struct snd_kcontrol_new tas5711_controls[] = {
1, 1),
};
static const struct regmap_range tas571x_readonly_regs_range[] = {
regmap_reg_range(TAS571X_CLK_CTRL_REG, TAS571X_DEV_ID_REG),
};
static const struct regmap_range tas571x_volatile_regs_range[] = {
regmap_reg_range(TAS571X_CLK_CTRL_REG, TAS571X_ERR_STATUS_REG),
regmap_reg_range(TAS571X_OSC_TRIM_REG, TAS571X_OSC_TRIM_REG),
};
static const struct regmap_access_table tas571x_write_regs = {
.no_ranges = tas571x_readonly_regs_range,
.n_no_ranges = ARRAY_SIZE(tas571x_readonly_regs_range),
};
static const struct regmap_access_table tas571x_volatile_regs = {
.yes_ranges = tas571x_volatile_regs_range,
.n_yes_ranges = ARRAY_SIZE(tas571x_volatile_regs_range),
};
static const struct reg_default tas5711_reg_defaults[] = {
{ 0x04, 0x05 },
{ 0x05, 0x40 },
......@@ -260,6 +305,8 @@ static const struct regmap_config tas5711_regmap_config = {
.reg_defaults = tas5711_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(tas5711_reg_defaults),
.cache_type = REGCACHE_RBTREE,
.wr_table = &tas571x_write_regs,
.volatile_table = &tas571x_volatile_regs,
};
static const struct tas571x_chip tas5711_chip = {
......@@ -314,6 +361,8 @@ static const struct regmap_config tas5717_regmap_config = {
.reg_defaults = tas5717_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(tas5717_reg_defaults),
.cache_type = REGCACHE_RBTREE,
.wr_table = &tas571x_write_regs,
.volatile_table = &tas571x_volatile_regs,
};
/* This entry is reused for tas5719 as the software interface is identical. */
......@@ -326,6 +375,77 @@ static const struct tas571x_chip tas5717_chip = {
.vol_reg_size = 2,
};
static const char *const tas5721_supply_names[] = {
"AVDD",
"DVDD",
"DRVDD",
"PVDD",
};
static const struct snd_kcontrol_new tas5721_controls[] = {
SOC_SINGLE_TLV("Master Volume",
TAS571X_MVOL_REG,
0, 0xff, 1, tas5711_volume_tlv),
SOC_DOUBLE_R_TLV("Speaker Volume",
TAS571X_CH1_VOL_REG,
TAS571X_CH2_VOL_REG,
0, 0xff, 1, tas5711_volume_tlv),
SOC_DOUBLE("Speaker Switch",
TAS571X_SOFT_MUTE_REG,
TAS571X_SOFT_MUTE_CH1_SHIFT, TAS571X_SOFT_MUTE_CH2_SHIFT,
1, 1),
};
static const struct reg_default tas5721_reg_defaults[] = {
{TAS571X_CLK_CTRL_REG, 0x6c},
{TAS571X_DEV_ID_REG, 0x00},
{TAS571X_ERR_STATUS_REG, 0x00},
{TAS571X_SYS_CTRL_1_REG, 0xa0},
{TAS571X_SDI_REG, 0x05},
{TAS571X_SYS_CTRL_2_REG, 0x40},
{TAS571X_SOFT_MUTE_REG, 0x00},
{TAS571X_MVOL_REG, 0xff},
{TAS571X_CH1_VOL_REG, 0x30},
{TAS571X_CH2_VOL_REG, 0x30},
{TAS571X_CH3_VOL_REG, 0x30},
{TAS571X_VOL_CFG_REG, 0x91},
{TAS571X_MODULATION_LIMIT_REG, 0x02},
{TAS571X_IC_DELAY_CH1_REG, 0xac},
{TAS571X_IC_DELAY_CH2_REG, 0x54},
{TAS571X_IC_DELAY_CH3_REG, 0xac},
{TAS571X_IC_DELAY_CH4_REG, 0x54},
{TAS571X_PWM_CH_SDN_GROUP_REG, 0x30},
{TAS571X_START_STOP_PERIOD_REG, 0x0f},
{TAS571X_OSC_TRIM_REG, 0x82},
{TAS571X_BKND_ERR_REG, 0x02},
{TAS571X_INPUT_MUX_REG, 0x17772},
{TAS571X_CH4_SRC_SELECT_REG, 0x4303},
{TAS571X_PWM_MUX_REG, 0x1021345},
};
static const struct regmap_config tas5721_regmap_config = {
.reg_bits = 8,
.val_bits = 32,
.max_register = 0xff,
.reg_read = tas571x_reg_read,
.reg_write = tas571x_reg_write,
.reg_defaults = tas5721_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(tas5721_reg_defaults),
.cache_type = REGCACHE_RBTREE,
.wr_table = &tas571x_write_regs,
.volatile_table = &tas571x_volatile_regs,
};
static const struct tas571x_chip tas5721_chip = {
.supply_names = tas5721_supply_names,
.num_supply_names = ARRAY_SIZE(tas5721_supply_names),
.controls = tas5711_controls,
.num_controls = ARRAY_SIZE(tas5711_controls),
.regmap_config = &tas5721_regmap_config,
.vol_reg_size = 1,
};
static const struct snd_soc_dapm_widget tas571x_dapm_widgets[] = {
SND_SOC_DAPM_DAC("DACL", NULL, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_DAC("DACR", NULL, SND_SOC_NOPM, 0, 0),
......@@ -386,11 +506,10 @@ static int tas571x_i2c_probe(struct i2c_client *client,
i2c_set_clientdata(client, priv);
of_id = of_match_device(tas571x_of_match, dev);
if (!of_id) {
dev_err(dev, "Unknown device type\n");
return -EINVAL;
}
priv->chip = of_id->data;
if (of_id)
priv->chip = of_id->data;
else
priv->chip = (void *) id->driver_data;
priv->mclk = devm_clk_get(dev, "mclk");
if (IS_ERR(priv->mclk) && PTR_ERR(priv->mclk) != -ENOENT) {
......@@ -445,10 +564,6 @@ static int tas571x_i2c_probe(struct i2c_client *client,
if (ret)
return ret;
ret = regmap_update_bits(priv->regmap, TAS571X_SYS_CTRL_2_REG,
TAS571X_SYS_CTRL_2_SDN_MASK, 0);
if (ret)
return ret;
memcpy(&priv->codec_driver, &tas571x_codec, sizeof(priv->codec_driver));
priv->codec_driver.controls = priv->chip->controls;
......@@ -486,14 +601,16 @@ static const struct of_device_id tas571x_of_match[] = {
{ .compatible = "ti,tas5711", .data = &tas5711_chip, },
{ .compatible = "ti,tas5717", .data = &tas5717_chip, },
{ .compatible = "ti,tas5719", .data = &tas5717_chip, },
{ .compatible = "ti,tas5721", .data = &tas5721_chip, },
{ }
};
MODULE_DEVICE_TABLE(of, tas571x_of_match);
static const struct i2c_device_id tas571x_i2c_id[] = {
{ "tas5711", 0 },
{ "tas5717", 0 },
{ "tas5719", 0 },
{ "tas5711", (kernel_ulong_t) &tas5711_chip },
{ "tas5717", (kernel_ulong_t) &tas5717_chip },
{ "tas5719", (kernel_ulong_t) &tas5717_chip },
{ "tas5721", (kernel_ulong_t) &tas5721_chip },
{ }
};
MODULE_DEVICE_TABLE(i2c, tas571x_i2c_id);
......
sound/soc/codecs/tas571x.h
View file @ aaa36d3a
......@@ -13,6 +13,10 @@
#define _TAS571X_H
/* device registers */
#define TAS571X_CLK_CTRL_REG 0x00
#define TAS571X_DEV_ID_REG 0x01
#define TAS571X_ERR_STATUS_REG 0x02
#define TAS571X_SYS_CTRL_1_REG 0x03
#define TAS571X_SDI_REG 0x04
#define TAS571X_SDI_FMT_MASK 0x0f
......@@ -27,7 +31,25 @@
#define TAS571X_MVOL_REG 0x07
#define TAS571X_CH1_VOL_REG 0x08
#define TAS571X_CH2_VOL_REG 0x09
#define TAS571X_CH3_VOL_REG 0x0a
#define TAS571X_VOL_CFG_REG 0x0e
#define TAS571X_MODULATION_LIMIT_REG 0x10
#define TAS571X_IC_DELAY_CH1_REG 0x11
#define TAS571X_IC_DELAY_CH2_REG 0x12
#define TAS571X_IC_DELAY_CH3_REG 0x13
#define TAS571X_IC_DELAY_CH4_REG 0x14
#define TAS571X_PWM_CH_SDN_GROUP_REG 0x19 /* N/A on TAS5717, TAS5719 */
#define TAS571X_PWM_CH1_SDN_MASK (1<<0)
#define TAS571X_PWM_CH2_SDN_SHIFT (1<<1)
#define TAS571X_PWM_CH3_SDN_SHIFT (1<<2)
#define TAS571X_PWM_CH4_SDN_SHIFT (1<<3)
#define TAS571X_START_STOP_PERIOD_REG 0x1a
#define TAS571X_OSC_TRIM_REG 0x1b
#define TAS571X_BKND_ERR_REG 0x1c
#define TAS571X_INPUT_MUX_REG 0x20
#define TAS571X_CH4_SRC_SELECT_REG 0x21
#define TAS571X_PWM_MUX_REG 0x25
#endif /* _TAS571X_H */
sound/soc/codecs/tas5720.c 0 → 100644
View file @ aaa36d3a
/*
* tas5720.c - ALSA SoC Texas Instruments TAS5720 Mono Audio Amplifier
*
* Copyright (C)2015-2016 Texas Instruments Incorporated - http://www.ti.com
*
* Author: Andreas Dannenberg <dannenberg@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/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <linux/regulator/consumer.h>
#include <linux/delay.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/tlv.h>
#include "tas5720.h"
/* Define how often to check (and clear) the fault status register (in ms) */
#define TAS5720_FAULT_CHECK_INTERVAL 200
static const char * const tas5720_supply_names[] = {
"dvdd", /* Digital power supply. Connect to 3.3-V supply. */
"pvdd", /* Class-D amp and analog power supply (connected). */
};
#define TAS5720_NUM_SUPPLIES ARRAY_SIZE(tas5720_supply_names)
struct tas5720_data {
struct snd_soc_codec *codec;
struct regmap *regmap;
struct i2c_client *tas5720_client;
struct regulator_bulk_data supplies[TAS5720_NUM_SUPPLIES];
struct delayed_work fault_check_work;
unsigned int last_fault;
};
static int tas5720_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;
unsigned int rate = params_rate(params);
bool ssz_ds;
int ret;
switch (rate) {
case 44100:
case 48000:
ssz_ds = false;
break;
case 88200:
case 96000:
ssz_ds = true;
break;
default:
dev_err(codec->dev, "unsupported sample rate: %u\n", rate);
return -EINVAL;
}
ret = snd_soc_update_bits(codec, TAS5720_DIGITAL_CTRL1_REG,
TAS5720_SSZ_DS, ssz_ds);
if (ret < 0) {
dev_err(codec->dev, "error setting sample rate: %d\n", ret);
return ret;
}
return 0;
}
static int tas5720_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct snd_soc_codec *codec = dai->codec;
u8 serial_format;
int ret;
if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS) {
dev_vdbg(codec->dev, "DAI Format master is not found\n");
return -EINVAL;
}
switch (fmt & (SND_SOC_DAIFMT_FORMAT_MASK |
SND_SOC_DAIFMT_INV_MASK)) {
case (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF):
/* 1st data bit occur one BCLK cycle after the frame sync */
serial_format = TAS5720_SAIF_I2S;
break;
case (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_NB_NF):
/*
* Note that although the TAS5720 does not have a dedicated DSP
* mode it doesn't care about the LRCLK duty cycle during TDM
* operation. Therefore we can use the device's I2S mode with
* its delaying of the 1st data bit to receive DSP_A formatted
* data. See device datasheet for additional details.
*/
serial_format = TAS5720_SAIF_I2S;
break;
case (SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF):
/*
* Similar to DSP_A, we can use the fact that the TAS5720 does
* not care about the LRCLK duty cycle during TDM to receive
* DSP_B formatted data in LEFTJ mode (no delaying of the 1st
* data bit).
*/
serial_format = TAS5720_SAIF_LEFTJ;
break;
case (SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF):
/* No delay after the frame sync */
serial_format = TAS5720_SAIF_LEFTJ;
break;
default:
dev_vdbg(codec->dev, "DAI Format is not found\n");
return -EINVAL;
}
ret = snd_soc_update_bits(codec, TAS5720_DIGITAL_CTRL1_REG,
TAS5720_SAIF_FORMAT_MASK,
serial_format);
if (ret < 0) {
dev_err(codec->dev, "error setting SAIF format: %d\n", ret);
return ret;
}
return 0;
}
static int tas5720_set_dai_tdm_slot(struct snd_soc_dai *dai,
unsigned int tx_mask, unsigned int rx_mask,
int slots, int slot_width)
{
struct snd_soc_codec *codec = dai->codec;
unsigned int first_slot;
int ret;
if (!tx_mask) {
dev_err(codec->dev, "tx masks must not be 0\n");
return -EINVAL;
}
/*
* Determine the first slot that is being requested. We will only
* use the first slot that is found since the TAS5720 is a mono
* amplifier.
*/
first_slot = __ffs(tx_mask);
if (first_slot > 7) {
dev_err(codec->dev, "slot selection out of bounds (%u)\n",
first_slot);
return -EINVAL;
}
/* Enable manual TDM slot selection (instead of I2C ID based) */
ret = snd_soc_update_bits(codec, TAS5720_DIGITAL_CTRL1_REG,
TAS5720_TDM_CFG_SRC, TAS5720_TDM_CFG_SRC);
if (ret < 0)
goto error_snd_soc_update_bits;
/* Configure the TDM slot to process audio from */
ret = snd_soc_update_bits(codec, TAS5720_DIGITAL_CTRL2_REG,
TAS5720_TDM_SLOT_SEL_MASK, first_slot);
if (ret < 0)
goto error_snd_soc_update_bits;
return 0;
error_snd_soc_update_bits:
dev_err(codec->dev, "error configuring TDM mode: %d\n", ret);
return ret;
}
static int tas5720_mute(struct snd_soc_dai *dai, int mute)
{
struct snd_soc_codec *codec = dai->codec;
int ret;
ret = snd_soc_update_bits(codec, TAS5720_DIGITAL_CTRL2_REG,
TAS5720_MUTE, mute ? TAS5720_MUTE : 0);
if (ret < 0) {
dev_err(codec->dev, "error (un-)muting device: %d\n", ret);
return ret;
}
return 0;
}
static void tas5720_fault_check_work(struct work_struct *work)
{
struct tas5720_data *tas5720 = container_of(work, struct tas5720_data,
fault_check_work.work);
struct device *dev = tas5720->codec->dev;
unsigned int curr_fault;
int ret;
ret = regmap_read(tas5720->regmap, TAS5720_FAULT_REG, &curr_fault);
if (ret < 0) {
dev_err(dev, "failed to read FAULT register: %d\n", ret);
goto out;
}
/* Check/handle all errors except SAIF clock errors */
curr_fault &= TAS5720_OCE | TAS5720_DCE | TAS5720_OTE;
/*
* Only flag errors once for a given occurrence. This is needed as
* the TAS5720 will take time clearing the fault condition internally
* during which we don't want to bombard the system with the same
* error message over and over.
*/
if ((curr_fault & TAS5720_OCE) && !(tas5720->last_fault & TAS5720_OCE))
dev_crit(dev, "experienced an over current hardware fault\n");
if ((curr_fault & TAS5720_DCE) && !(tas5720->last_fault & TAS5720_DCE))
dev_crit(dev, "experienced a DC detection fault\n");
if ((curr_fault & TAS5720_OTE) && !(tas5720->last_fault & TAS5720_OTE))
dev_crit(dev, "experienced an over temperature fault\n");
/* Store current fault value so we can detect any changes next time */
tas5720->last_fault = curr_fault;
if (!curr_fault)
goto out;
/*
* Periodically toggle SDZ (shutdown bit) H->L->H to clear any latching
* faults as long as a fault condition persists. Always going through
* the full sequence no matter the first return value to minimizes
* chances for the device to end up in shutdown mode.
*/
ret = regmap_write_bits(tas5720->regmap, TAS5720_POWER_CTRL_REG,
TAS5720_SDZ, 0);
if (ret < 0)
dev_err(dev, "failed to write POWER_CTRL register: %d\n", ret);
ret = regmap_write_bits(tas5720->regmap, TAS5720_POWER_CTRL_REG,
TAS5720_SDZ, TAS5720_SDZ);
if (ret < 0)
dev_err(dev, "failed to write POWER_CTRL register: %d\n", ret);
out:
/* Schedule the next fault check at the specified interval */
schedule_delayed_work(&tas5720->fault_check_work,
msecs_to_jiffies(TAS5720_FAULT_CHECK_INTERVAL));
}
static int tas5720_codec_probe(struct snd_soc_codec *codec)
{
struct tas5720_data *tas5720 = snd_soc_codec_get_drvdata(codec);
unsigned int device_id;
int ret;
tas5720->codec = codec;
ret = regulator_bulk_enable(ARRAY_SIZE(tas5720->supplies),
tas5720->supplies);
if (ret != 0) {
dev_err(codec->dev, "failed to enable supplies: %d\n", ret);
return ret;
}
ret = regmap_read(tas5720->regmap, TAS5720_DEVICE_ID_REG, &device_id);
if (ret < 0) {
dev_err(codec->dev, "failed to read device ID register: %d\n",
ret);
goto probe_fail;
}
if (device_id != TAS5720_DEVICE_ID) {
dev_err(codec->dev, "wrong device ID. expected: %u read: %u\n",
TAS5720_DEVICE_ID, device_id);
ret = -ENODEV;
goto probe_fail;
}
/* Set device to mute */
ret = snd_soc_update_bits(codec, TAS5720_DIGITAL_CTRL2_REG,
TAS5720_MUTE, TAS5720_MUTE);
if (ret < 0)
goto error_snd_soc_update_bits;
/*
* Enter shutdown mode - our default when not playing audio - to
* minimize current consumption. On the TAS5720 there is no real down
* side doing so as all device registers are preserved and the wakeup
* of the codec is rather quick which we do using a dapm widget.
*/
ret = snd_soc_update_bits(codec, TAS5720_POWER_CTRL_REG,
TAS5720_SDZ, 0);
if (ret < 0)
goto error_snd_soc_update_bits;
INIT_DELAYED_WORK(&tas5720->fault_check_work, tas5720_fault_check_work);
return 0;
error_snd_soc_update_bits:
dev_err(codec->dev, "error configuring device registers: %d\n", ret);
probe_fail:
regulator_bulk_disable(ARRAY_SIZE(tas5720->supplies),
tas5720->supplies);
return ret;
}
static int tas5720_codec_remove(struct snd_soc_codec *codec)
{
struct tas5720_data *tas5720 = snd_soc_codec_get_drvdata(codec);
int ret;
cancel_delayed_work_sync(&tas5720->fault_check_work);
ret = regulator_bulk_disable(ARRAY_SIZE(tas5720->supplies),
tas5720->supplies);
if (ret < 0)
dev_err(codec->dev, "failed to disable supplies: %d\n", ret);
return ret;
};
static int tas5720_dac_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
struct tas5720_data *tas5720 = snd_soc_codec_get_drvdata(codec);
int ret;
if (event & SND_SOC_DAPM_POST_PMU) {
/* Take TAS5720 out of shutdown mode */
ret = snd_soc_update_bits(codec, TAS5720_POWER_CTRL_REG,
TAS5720_SDZ, TAS5720_SDZ);
if (ret < 0) {
dev_err(codec->dev, "error waking codec: %d\n", ret);
return ret;
}
/*
* Observe codec shutdown-to-active time. The datasheet only
* lists a nominal value however just use-it as-is without
* additional padding to minimize the delay introduced in
* starting to play audio (actually there is other setup done
* by the ASoC framework that will provide additional delays,
* so we should always be safe).
*/
msleep(25);
/* Turn on TAS5720 periodic fault checking/handling */
tas5720->last_fault = 0;
schedule_delayed_work(&tas5720->fault_check_work,
msecs_to_jiffies(TAS5720_FAULT_CHECK_INTERVAL));
} else if (event & SND_SOC_DAPM_PRE_PMD) {
/* Disable TAS5720 periodic fault checking/handling */
cancel_delayed_work_sync(&tas5720->fault_check_work);
/* Place TAS5720 in shutdown mode to minimize current draw */
ret = snd_soc_update_bits(codec, TAS5720_POWER_CTRL_REG,
TAS5720_SDZ, 0);
if (ret < 0) {
dev_err(codec->dev, "error shutting down codec: %d\n",
ret);
return ret;
}
}
return 0;
}
#ifdef CONFIG_PM
static int tas5720_suspend(struct snd_soc_codec *codec)
{
struct tas5720_data *tas5720 = snd_soc_codec_get_drvdata(codec);
int ret;
regcache_cache_only(tas5720->regmap, true);
regcache_mark_dirty(tas5720->regmap);
ret = regulator_bulk_disable(ARRAY_SIZE(tas5720->supplies),
tas5720->supplies);
if (ret < 0)
dev_err(codec->dev, "failed to disable supplies: %d\n", ret);
return ret;
}
static int tas5720_resume(struct snd_soc_codec *codec)
{
struct tas5720_data *tas5720 = snd_soc_codec_get_drvdata(codec);
int ret;
ret = regulator_bulk_enable(ARRAY_SIZE(tas5720->supplies),
tas5720->supplies);
if (ret < 0) {
dev_err(codec->dev, "failed to enable supplies: %d\n", ret);
return ret;
}
regcache_cache_only(tas5720->regmap, false);
ret = regcache_sync(tas5720->regmap);
if (ret < 0) {
dev_err(codec->dev, "failed to sync regcache: %d\n", ret);
return ret;
}
return 0;
}
#else
#define tas5720_suspend NULL
#define tas5720_resume NULL
#endif
static bool tas5720_is_volatile_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case TAS5720_DEVICE_ID_REG:
case TAS5720_FAULT_REG:
return true;
default:
return false;
}
}
static const struct regmap_config tas5720_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = TAS5720_MAX_REG,
.cache_type = REGCACHE_RBTREE,
.volatile_reg = tas5720_is_volatile_reg,
};
/*
* DAC analog gain. There are four discrete values to select from, ranging
* from 19.2 dB to 26.3dB.
*/
static const DECLARE_TLV_DB_RANGE(dac_analog_tlv,
0x0, 0x0, TLV_DB_SCALE_ITEM(1920, 0, 0),
0x1, 0x1, TLV_DB_SCALE_ITEM(2070, 0, 0),
0x2, 0x2, TLV_DB_SCALE_ITEM(2350, 0, 0),
0x3, 0x3, TLV_DB_SCALE_ITEM(2630, 0, 0),
);
/*
* DAC digital volumes. From -103.5 to 24 dB in 0.5 dB steps. Note that
* setting the gain below -100 dB (register value <0x7) is effectively a MUTE
* as per device datasheet.
*/
static DECLARE_TLV_DB_SCALE(dac_tlv, -10350, 50, 0);
static const struct snd_kcontrol_new tas5720_snd_controls[] = {
SOC_SINGLE_TLV("Speaker Driver Playback Volume",
TAS5720_VOLUME_CTRL_REG, 0, 0xff, 0, dac_tlv),
SOC_SINGLE_TLV("Speaker Driver Analog Gain", TAS5720_ANALOG_CTRL_REG,
TAS5720_ANALOG_GAIN_SHIFT, 3, 0, dac_analog_tlv),
};
static const struct snd_soc_dapm_widget tas5720_dapm_widgets[] = {
SND_SOC_DAPM_AIF_IN("DAC IN", "Playback", 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas5720_dac_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_OUTPUT("OUT")
};
static const struct snd_soc_dapm_route tas5720_audio_map[] = {
{ "DAC", NULL, "DAC IN" },
{ "OUT", NULL, "DAC" },
};
static struct snd_soc_codec_driver soc_codec_dev_tas5720 = {
.probe = tas5720_codec_probe,
.remove = tas5720_codec_remove,
.suspend = tas5720_suspend,
.resume = tas5720_resume,
.controls = tas5720_snd_controls,
.num_controls = ARRAY_SIZE(tas5720_snd_controls),
.dapm_widgets = tas5720_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(tas5720_dapm_widgets),
.dapm_routes = tas5720_audio_map,
.num_dapm_routes = ARRAY_SIZE(tas5720_audio_map),
};
/* PCM rates supported by the TAS5720 driver */
#define TAS5720_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
/* Formats supported by TAS5720 driver */
#define TAS5720_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S18_3LE |\
SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE)
static struct snd_soc_dai_ops tas5720_speaker_dai_ops = {
.hw_params = tas5720_hw_params,
.set_fmt = tas5720_set_dai_fmt,
.set_tdm_slot = tas5720_set_dai_tdm_slot,
.digital_mute = tas5720_mute,
};
/*
* TAS5720 DAI structure
*
* Note that were are advertising .playback.channels_max = 2 despite this being
* a mono amplifier. The reason for that is that some serial ports such as TI's
* McASP module have a minimum number of channels (2) that they can output.
* Advertising more channels than we have will allow us to interface with such
* a serial port without really any negative side effects as the TAS5720 will
* simply ignore any extra channel(s) asides from the one channel that is
* configured to be played back.
*/
static struct snd_soc_dai_driver tas5720_dai[] = {
{
.name = "tas5720-amplifier",
.playback = {
.stream_name = "Playback",
.channels_min = 1,
.channels_max = 2,
.rates = TAS5720_RATES,
.formats = TAS5720_FORMATS,
},
.ops = &tas5720_speaker_dai_ops,
},
};
static int tas5720_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct device *dev = &client->dev;
struct tas5720_data *data;
int ret;
int i;
data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
data->tas5720_client = client;
data->regmap = devm_regmap_init_i2c(client, &tas5720_regmap_config);
if (IS_ERR(data->regmap)) {
ret = PTR_ERR(data->regmap);
dev_err(dev, "failed to allocate register map: %d\n", ret);
return ret;
}
for (i = 0; i < ARRAY_SIZE(data->supplies); i++)
data->supplies[i].supply = tas5720_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);
return ret;
}
dev_set_drvdata(dev, data);
ret = snd_soc_register_codec(&client->dev,
&soc_codec_dev_tas5720,
tas5720_dai, ARRAY_SIZE(tas5720_dai));
if (ret < 0) {
dev_err(dev, "failed to register codec: %d\n", ret);
return ret;
}
return 0;
}
static int tas5720_remove(struct i2c_client *client)
{
struct device *dev = &client->dev;
snd_soc_unregister_codec(dev);
return 0;
}
static const struct i2c_device_id tas5720_id[] = {
{ "tas5720", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, tas5720_id);
#if IS_ENABLED(CONFIG_OF)
static const struct of_device_id tas5720_of_match[] = {
{ .compatible = "ti,tas5720", },
{ },
};
MODULE_DEVICE_TABLE(of, tas5720_of_match);
#endif
static struct i2c_driver tas5720_i2c_driver = {
.driver = {
.name = "tas5720",
.of_match_table = of_match_ptr(tas5720_of_match),
},
.probe = tas5720_probe,
.remove = tas5720_remove,
.id_table = tas5720_id,
};
module_i2c_driver(tas5720_i2c_driver);
MODULE_AUTHOR("Andreas Dannenberg <dannenberg@ti.com>");
MODULE_DESCRIPTION("TAS5720 Audio amplifier driver");
MODULE_LICENSE("GPL");
sound/soc/codecs/tas5720.h 0 → 100644
View file @ aaa36d3a
/*
* tas5720.h - ALSA SoC Texas Instruments TAS5720 Mono Audio Amplifier
*
* Copyright (C)2015-2016 Texas Instruments Incorporated - http://www.ti.com
*
* Author: Andreas Dannenberg <dannenberg@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 __TAS5720_H__
#define __TAS5720_H__
/* Register Address Map */
#define TAS5720_DEVICE_ID_REG 0x00
#define TAS5720_POWER_CTRL_REG 0x01
#define TAS5720_DIGITAL_CTRL1_REG 0x02
#define TAS5720_DIGITAL_CTRL2_REG 0x03
#define TAS5720_VOLUME_CTRL_REG 0x04
#define TAS5720_ANALOG_CTRL_REG 0x06
#define TAS5720_FAULT_REG 0x08
#define TAS5720_DIGITAL_CLIP2_REG 0x10
#define TAS5720_DIGITAL_CLIP1_REG 0x11
#define TAS5720_MAX_REG TAS5720_DIGITAL_CLIP1_REG
/* TAS5720_DEVICE_ID_REG */
#define TAS5720_DEVICE_ID 0x01
/* TAS5720_POWER_CTRL_REG */
#define TAS5720_DIG_CLIP_MASK GENMASK(7, 2)
#define TAS5720_SLEEP BIT(1)
#define TAS5720_SDZ BIT(0)
/* TAS5720_DIGITAL_CTRL1_REG */
#define TAS5720_HPF_BYPASS BIT(7)
#define TAS5720_TDM_CFG_SRC BIT(6)
#define TAS5720_SSZ_DS BIT(3)
#define TAS5720_SAIF_RIGHTJ_24BIT (0x0)
#define TAS5720_SAIF_RIGHTJ_20BIT (0x1)
#define TAS5720_SAIF_RIGHTJ_18BIT (0x2)
#define TAS5720_SAIF_RIGHTJ_16BIT (0x3)
#define TAS5720_SAIF_I2S (0x4)
#define TAS5720_SAIF_LEFTJ (0x5)
#define TAS5720_SAIF_FORMAT_MASK GENMASK(2, 0)
/* TAS5720_DIGITAL_CTRL2_REG */
#define TAS5720_MUTE BIT(4)
#define TAS5720_TDM_SLOT_SEL_MASK GENMASK(2, 0)
/* TAS5720_ANALOG_CTRL_REG */
#define TAS5720_PWM_RATE_6_3_FSYNC (0x0 << 4)
#define TAS5720_PWM_RATE_8_4_FSYNC (0x1 << 4)
#define TAS5720_PWM_RATE_10_5_FSYNC (0x2 << 4)
#define TAS5720_PWM_RATE_12_6_FSYNC (0x3 << 4)
#define TAS5720_PWM_RATE_14_7_FSYNC (0x4 << 4)
#define TAS5720_PWM_RATE_16_8_FSYNC (0x5 << 4)
#define TAS5720_PWM_RATE_20_10_FSYNC (0x6 << 4)
#define TAS5720_PWM_RATE_24_12_FSYNC (0x7 << 4)
#define TAS5720_PWM_RATE_MASK GENMASK(6, 4)
#define TAS5720_ANALOG_GAIN_19_2DBV (0x0 << 2)
#define TAS5720_ANALOG_GAIN_20_7DBV (0x1 << 2)
#define TAS5720_ANALOG_GAIN_23_5DBV (0x2 << 2)
#define TAS5720_ANALOG_GAIN_26_3DBV (0x3 << 2)
#define TAS5720_ANALOG_GAIN_MASK GENMASK(3, 2)
#define TAS5720_ANALOG_GAIN_SHIFT (0x2)
/* TAS5720_FAULT_REG */
#define TAS5720_OC_THRESH_100PCT (0x0 << 4)
#define TAS5720_OC_THRESH_75PCT (0x1 << 4)
#define TAS5720_OC_THRESH_50PCT (0x2 << 4)
#define TAS5720_OC_THRESH_25PCT (0x3 << 4)
#define TAS5720_OC_THRESH_MASK GENMASK(5, 4)
#define TAS5720_CLKE BIT(3)
#define TAS5720_OCE BIT(2)
#define TAS5720_DCE BIT(1)
#define TAS5720_OTE BIT(0)
#define TAS5720_FAULT_MASK GENMASK(3, 0)
/* TAS5720_DIGITAL_CLIP1_REG */
#define TAS5720_CLIP1_MASK GENMASK(7, 2)
#define TAS5720_CLIP1_SHIFT (0x2)
#endif /* __TAS5720_H__ */
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