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ASoC: wm8731: Overhaul of the driver

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Merge series from Mark Brown <broonie@kernel.org>:

This series contains a bunch of fairly minor changes which overhaul and
modernise the WM8731 driver, there should be no impact on the driver's
functionality.
This commit is contained in:
Mark Brown 2022-04-05 10:25:00 +01:00
commit 5c5c69e943
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
12 changed files with 323 additions and 257 deletions
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97
Documentation/devicetree/bindings/sound/wlf,wm8731.yaml Normal file
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@ -0,0 +1,97 @@
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/sound/wlf,wm8731.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Wolfson Microelectromics WM8731 audio CODEC
maintainers:
- patches@opensource.cirrus.com
description: |
Wolfson Microelectronics WM8731 audio CODEC
Pins on the device (for linking into audio routes):
* LOUT: Left Channel Line Output
* ROUT: Right Channel Line Output
* LHPOUT: Left Channel Headphone Output
* RHPOUT: Right Channel Headphone Output
* LLINEIN: Left Channel Line Input
* RLINEIN: Right Channel Line Input
* MICIN: Microphone Input
properties:
compatible:
enum:
- wlf,wm8731
reg:
maxItems: 1
"#sound-dai-cells":
const: 0
clocks:
description: Clock provider for MCLK pin.
maxItems: 1
clock-names:
items:
- const: mclk
AVDD-supply:
description: Analog power supply regulator on the AVDD pin.
HPVDD-supply:
description: Headphone power supply regulator on the HPVDD pin.
DBVDD-supply:
description: Digital buffer supply regulator for the DBVDD pin.
DCVDD-supply:
description: Digital core supply regulator for the DCVDD pin.
spi-max-frequency: true
additionalProperties: false
required:
- reg
- compatible
- AVDD-supply
- HPVDD-supply
- DBVDD-supply
- DCVDD-supply
examples:
- |
spi {
#address-cells = <1>;
#size-cells = <0>;
wm8731_i2c: codec@0 {
compatible = "wlf,wm8731";
reg = <0>;
spi-max-frequency = <12500000>;
AVDD-supply = <&avdd_reg>;
HPVDD-supply = <&hpvdd_reg>;
DCVDD-supply = <&dcvdd_reg>;
DBVDD-supply = <&dbvdd_reg>;
};
};
- |
i2c {
#address-cells = <1>;
#size-cells = <0>;
wm8731_spi: codec@1b {
compatible = "wlf,wm8731";
reg = <0x1b>;
AVDD-supply = <&avdd_reg>;
HPVDD-supply = <&hpvdd_reg>;
DCVDD-supply = <&dcvdd_reg>;
DBVDD-supply = <&dbvdd_reg>;
};
};

27
Documentation/devicetree/bindings/sound/wm8731.txt
View File

@ -1,27 +0,0 @@
WM8731 audio CODEC
This device supports both I2C and SPI (configured with pin strapping
on the board).
Required properties:
- compatible : "wlf,wm8731"
- reg : the I2C address of the device for I2C, the chip select
number for SPI.
Example:
wm8731: codec@1a {
compatible = "wlf,wm8731";
reg = <0x1a>;
};
Available audio endpoints for an audio-routing table:
* LOUT: Left Channel Line Output
* ROUT: Right Channel Line Output
* LHPOUT: Left Channel Headphone Output
* RHPOUT: Right Channel Headphone Output
* LLINEIN: Left Channel Line Input
* RLINEIN: Right Channel Line Input
* MICIN: Microphone Input

3
arch/arm/configs/multi_v5_defconfig
View File

@ -211,7 +211,8 @@ CONFIG_SND_ATMEL_SOC_WM8904=m
CONFIG_SND_AT91_SOC_SAM9X5_WM8731=m
CONFIG_SND_KIRKWOOD_SOC=y
CONFIG_SND_SOC_ALC5623=y
CONFIG_SND_SOC_WM8731=y
CONFIG_SND_SOC_WM8731_I2C=y
CONFIG_SND_SOC_WM8731_SPI=y
CONFIG_SND_SIMPLE_CARD=y
CONFIG_HID_DRAGONRISE=y
CONFIG_HID_GYRATION=y

4
sound/soc/atmel/Kconfig
View File

@ -42,9 +42,9 @@ config SND_ATMEL_SOC_SSC_DMA
config SND_AT91_SOC_SAM9G20_WM8731
tristate "SoC Audio support for WM8731-based At91sam9g20 evaluation board"
depends on ARCH_AT91 || COMPILE_TEST
depends on ATMEL_SSC && SND_SOC_I2C_AND_SPI
depends on ATMEL_SSC && I2C
select SND_ATMEL_SOC_SSC_PDC
select SND_SOC_WM8731
select SND_SOC_WM8731_I2C
help
Say Y if you want to add support for SoC audio on WM8731-based
AT91sam9g20 evaluation board.

2
sound/soc/au1x/Kconfig
View File

@ -58,7 +58,7 @@ config SND_SOC_DB1200
select SND_SOC_AC97_CODEC
select SND_SOC_WM9712
select SND_SOC_AU1XPSC_I2S
select SND_SOC_WM8731
select SND_SOC_WM8731_I2C
help
Select this option to enable audio (AC97 and I2S) on the
Alchemy/AMD/RMI/NetLogic Db1200, Db1550 and Db1300 evaluation boards.

18
sound/soc/codecs/Kconfig
View File

@ -265,7 +265,8 @@ config SND_SOC_ALL_CODECS
imply SND_SOC_WM8711
imply SND_SOC_WM8727
imply SND_SOC_WM8728
imply SND_SOC_WM8731
imply SND_SOC_WM8731_I2C
imply SND_SOC_WM8731_SPI
imply SND_SOC_WM8737
imply SND_SOC_WM8741
imply SND_SOC_WM8750
@ -1753,8 +1754,19 @@ config SND_SOC_WM8728
depends on SND_SOC_I2C_AND_SPI
config SND_SOC_WM8731
tristate "Wolfson Microelectronics WM8731 CODEC"
depends on SND_SOC_I2C_AND_SPI
tristate
config SND_SOC_WM8731_I2C
tristate "Wolfson Microelectronics WM8731 CODEC with I2C"
depends on I2C
select REGMAP
select SND_SOC_WM8731
config SND_SOC_WM8731_SPI
tristate "Wolfson Microelectronics WM8731 CODEC with SPI"
depends on SPI
select REGMAP
select SND_SOC_WM8731
config SND_SOC_WM8737
tristate "Wolfson Microelectronics WM8737 ADC"

4
sound/soc/codecs/Makefile
View File

@ -290,6 +290,8 @@ snd-soc-wm8711-objs := wm8711.o
snd-soc-wm8727-objs := wm8727.o
snd-soc-wm8728-objs := wm8728.o
snd-soc-wm8731-objs := wm8731.o
snd-soc-wm8731-i2c-objs := wm8731-i2c.o
snd-soc-wm8731-spi-objs := wm8731-spi.o
snd-soc-wm8737-objs := wm8737.o
snd-soc-wm8741-objs := wm8741.o
snd-soc-wm8750-objs := wm8750.o
@ -632,6 +634,8 @@ obj-$(CONFIG_SND_SOC_WM8711) += snd-soc-wm8711.o
obj-$(CONFIG_SND_SOC_WM8727) += snd-soc-wm8727.o
obj-$(CONFIG_SND_SOC_WM8728) += snd-soc-wm8728.o
obj-$(CONFIG_SND_SOC_WM8731) += snd-soc-wm8731.o
obj-$(CONFIG_SND_SOC_WM8731_I2C) += snd-soc-wm8731-i2c.o
obj-$(CONFIG_SND_SOC_WM8731_SPI) += snd-soc-wm8731-spi.o
obj-$(CONFIG_SND_SOC_WM8737) += snd-soc-wm8737.o
obj-$(CONFIG_SND_SOC_WM8741) += snd-soc-wm8741.o
obj-$(CONFIG_SND_SOC_WM8750) += snd-soc-wm8750.o

69
sound/soc/codecs/wm8731-i2c.c Normal file
View File

@ -0,0 +1,69 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* wm8731-i2c.c -- WM8731 ALSA SoC Audio driver I2C code
*
* Copyright 2005 Openedhand Ltd.
* Copyright 2006-12 Wolfson Microelectronics, plc
*
* Author: Richard Purdie <richard@openedhand.com>
*
* Based on wm8753.c by Liam Girdwood
*/
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include "wm8731.h"
static const struct of_device_id wm8731_of_match[] = {
{ .compatible = "wlf,wm8731", },
{ }
};
MODULE_DEVICE_TABLE(of, wm8731_of_match);
static int wm8731_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct wm8731_priv *wm8731;
int ret;
wm8731 = devm_kzalloc(&i2c->dev, sizeof(struct wm8731_priv),
GFP_KERNEL);
if (wm8731 == NULL)
return -ENOMEM;
i2c_set_clientdata(i2c, wm8731);
wm8731->regmap = devm_regmap_init_i2c(i2c, &wm8731_regmap);
if (IS_ERR(wm8731->regmap)) {
ret = PTR_ERR(wm8731->regmap);
dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
ret);
return ret;
}
return wm8731_init(&i2c->dev, wm8731);
}
static const struct i2c_device_id wm8731_i2c_id[] = {
{ "wm8731", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, wm8731_i2c_id);
static struct i2c_driver wm8731_i2c_driver = {
.driver = {
.name = "wm8731",
.of_match_table = wm8731_of_match,
},
.probe = wm8731_i2c_probe,
.id_table = wm8731_i2c_id,
};
module_i2c_driver(wm8731_i2c_driver);
MODULE_DESCRIPTION("ASoC WM8731 driver - I2C");
MODULE_AUTHOR("Richard Purdie");
MODULE_LICENSE("GPL");

59
sound/soc/codecs/wm8731-spi.c Normal file
View File

@ -0,0 +1,59 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* wm8731.c -- WM8731 ALSA SoC Audio driver
*
* Copyright 2005 Openedhand Ltd.
* Copyright 2006-12 Wolfson Microelectronics, plc
*
* Author: Richard Purdie <richard@openedhand.com>
*
* Based on wm8753.c by Liam Girdwood
*/
#include <linux/spi/spi.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include "wm8731.h"
static const struct of_device_id wm8731_of_match[] = {
{ .compatible = "wlf,wm8731", },
{ }
};
MODULE_DEVICE_TABLE(of, wm8731_of_match);
static int wm8731_spi_probe(struct spi_device *spi)
{
struct wm8731_priv *wm8731;
int ret;
wm8731 = devm_kzalloc(&spi->dev, sizeof(*wm8731), GFP_KERNEL);
if (wm8731 == NULL)
return -ENOMEM;
spi_set_drvdata(spi, wm8731);
wm8731->regmap = devm_regmap_init_spi(spi, &wm8731_regmap);
if (IS_ERR(wm8731->regmap)) {
ret = PTR_ERR(wm8731->regmap);
dev_err(&spi->dev, "Failed to allocate register map: %d\n",
ret);
return ret;
}
return wm8731_init(&spi->dev, wm8731);
}
static struct spi_driver wm8731_spi_driver = {
.driver = {
.name = "wm8731",
.of_match_table = wm8731_of_match,
},
.probe = wm8731_spi_probe,
};
module_spi_driver(wm8731_spi_driver);
MODULE_DESCRIPTION("ASoC WM8731 driver - SPI");
MODULE_AUTHOR("Richard Purdie");
MODULE_LICENSE("GPL");

266
sound/soc/codecs/wm8731.c
View File

@ -15,13 +15,9 @@
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/spi/spi.h>
#include <linux/of_device.h>
#include <linux/mutex.h>
#include <linux/clk.h>
#include <sound/core.h>
#include <sound/pcm.h>
@ -32,7 +28,6 @@
#include "wm8731.h"
#define WM8731_NUM_SUPPLIES 4
static const char *wm8731_supply_names[WM8731_NUM_SUPPLIES] = {
"AVDD",
"HPVDD",
@ -40,21 +35,6 @@ static const char *wm8731_supply_names[WM8731_NUM_SUPPLIES] = {
"DBVDD",
};
/* codec private data */
struct wm8731_priv {
struct regmap *regmap;
struct clk *mclk;
struct regulator_bulk_data supplies[WM8731_NUM_SUPPLIES];
const struct snd_pcm_hw_constraint_list *constraints;
unsigned int sysclk;
int sysclk_type;
int playback_fs;
bool deemph;
struct mutex lock;
};
/*
* wm8731 register cache
*/
@ -429,12 +409,11 @@ static int wm8731_set_dai_fmt(struct snd_soc_dai *codec_dai,
struct snd_soc_component *component = codec_dai->component;
u16 iface = 0;
/* set master/slave audio interface */
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
case SND_SOC_DAIFMT_CBP_CFP:
iface |= 0x0040;
break;
case SND_SOC_DAIFMT_CBS_CFS:
case SND_SOC_DAIFMT_CBC_CFC:
break;
default:
return -EINVAL;
@ -570,11 +549,39 @@ static struct snd_soc_dai_driver wm8731_dai = {
.symmetric_rate = 1,
};
static int wm8731_request_supplies(struct device *dev,
struct wm8731_priv *wm8731)
static const struct snd_soc_component_driver soc_component_dev_wm8731 = {
.set_bias_level = wm8731_set_bias_level,
.controls = wm8731_snd_controls,
.num_controls = ARRAY_SIZE(wm8731_snd_controls),
.dapm_widgets = wm8731_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(wm8731_dapm_widgets),
.dapm_routes = wm8731_intercon,
.num_dapm_routes = ARRAY_SIZE(wm8731_intercon),
.suspend_bias_off = 1,
.idle_bias_on = 1,
.use_pmdown_time = 1,
.endianness = 1,
.non_legacy_dai_naming = 1,
};
int wm8731_init(struct device *dev, struct wm8731_priv *wm8731)
{
int ret = 0, i;
wm8731->mclk = devm_clk_get(dev, "mclk");
if (IS_ERR(wm8731->mclk)) {
ret = PTR_ERR(wm8731->mclk);
if (ret == -ENOENT) {
wm8731->mclk = NULL;
dev_warn(dev, "Assuming static MCLK\n");
} else {
dev_err(dev, "Failed to get MCLK: %d\n", ret);
return ret;
}
}
mutex_init(&wm8731->lock);
for (i = 0; i < ARRAY_SIZE(wm8731->supplies); i++)
wm8731->supplies[i].supply = wm8731_supply_names[i];
@ -592,13 +599,6 @@ static int wm8731_request_supplies(struct device *dev,
return ret;
}
return 0;
}
static int wm8731_hw_init(struct device *dev, struct wm8731_priv *wm8731)
{
int ret = 0;
ret = wm8731_reset(wm8731->regmap);
if (ret < 0) {
dev_err(dev, "Failed to issue reset: %d\n", ret);
@ -619,36 +619,24 @@ static int wm8731_hw_init(struct device *dev, struct wm8731_priv *wm8731)
regcache_mark_dirty(wm8731->regmap);
ret = devm_snd_soc_register_component(dev,
&soc_component_dev_wm8731, &wm8731_dai, 1);
if (ret != 0) {
dev_err(dev, "Failed to register CODEC: %d\n", ret);
goto err_regulator_enable;
}
return 0;
err_regulator_enable:
/* Regulators will be enabled by bias management */
regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
return ret;
}
EXPORT_SYMBOL_GPL(wm8731_init);
static const struct snd_soc_component_driver soc_component_dev_wm8731 = {
.set_bias_level = wm8731_set_bias_level,
.controls = wm8731_snd_controls,
.num_controls = ARRAY_SIZE(wm8731_snd_controls),
.dapm_widgets = wm8731_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(wm8731_dapm_widgets),
.dapm_routes = wm8731_intercon,
.num_dapm_routes = ARRAY_SIZE(wm8731_intercon),
.suspend_bias_off = 1,
.idle_bias_on = 1,
.use_pmdown_time = 1,
.endianness = 1,
.non_legacy_dai_naming = 1,
};
static const struct of_device_id wm8731_of_match[] = {
{ .compatible = "wlf,wm8731", },
{ }
};
MODULE_DEVICE_TABLE(of, wm8731_of_match);
static const struct regmap_config wm8731_regmap = {
const struct regmap_config wm8731_regmap = {
.reg_bits = 7,
.val_bits = 9,
@ -659,171 +647,7 @@ static const struct regmap_config wm8731_regmap = {
.reg_defaults = wm8731_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(wm8731_reg_defaults),
};
#if defined(CONFIG_SPI_MASTER)
static int wm8731_spi_probe(struct spi_device *spi)
{
struct wm8731_priv *wm8731;
int ret;
wm8731 = devm_kzalloc(&spi->dev, sizeof(*wm8731), GFP_KERNEL);
if (wm8731 == NULL)
return -ENOMEM;
wm8731->mclk = devm_clk_get(&spi->dev, "mclk");
if (IS_ERR(wm8731->mclk)) {
ret = PTR_ERR(wm8731->mclk);
if (ret == -ENOENT) {
wm8731->mclk = NULL;
dev_warn(&spi->dev, "Assuming static MCLK\n");
} else {
dev_err(&spi->dev, "Failed to get MCLK: %d\n",
ret);
return ret;
}
}
mutex_init(&wm8731->lock);
spi_set_drvdata(spi, wm8731);
ret = wm8731_request_supplies(&spi->dev, wm8731);
if (ret != 0)
return ret;
wm8731->regmap = devm_regmap_init_spi(spi, &wm8731_regmap);
if (IS_ERR(wm8731->regmap)) {
ret = PTR_ERR(wm8731->regmap);
dev_err(&spi->dev, "Failed to allocate register map: %d\n",
ret);
return ret;
}
ret = wm8731_hw_init(&spi->dev, wm8731);
if (ret != 0)
return ret;
ret = devm_snd_soc_register_component(&spi->dev,
&soc_component_dev_wm8731, &wm8731_dai, 1);
if (ret != 0) {
dev_err(&spi->dev, "Failed to register CODEC: %d\n", ret);
return ret;
}
return 0;
}
static struct spi_driver wm8731_spi_driver = {
.driver = {
.name = "wm8731",
.of_match_table = wm8731_of_match,
},
.probe = wm8731_spi_probe,
};
#endif /* CONFIG_SPI_MASTER */
#if IS_ENABLED(CONFIG_I2C)
static int wm8731_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct wm8731_priv *wm8731;
int ret;
wm8731 = devm_kzalloc(&i2c->dev, sizeof(struct wm8731_priv),
GFP_KERNEL);
if (wm8731 == NULL)
return -ENOMEM;
wm8731->mclk = devm_clk_get(&i2c->dev, "mclk");
if (IS_ERR(wm8731->mclk)) {
ret = PTR_ERR(wm8731->mclk);
if (ret == -ENOENT) {
wm8731->mclk = NULL;
dev_warn(&i2c->dev, "Assuming static MCLK\n");
} else {
dev_err(&i2c->dev, "Failed to get MCLK: %d\n",
ret);
return ret;
}
}
mutex_init(&wm8731->lock);
i2c_set_clientdata(i2c, wm8731);
ret = wm8731_request_supplies(&i2c->dev, wm8731);
if (ret != 0)
return ret;
wm8731->regmap = devm_regmap_init_i2c(i2c, &wm8731_regmap);
if (IS_ERR(wm8731->regmap)) {
ret = PTR_ERR(wm8731->regmap);
dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
ret);
return ret;
}
ret = wm8731_hw_init(&i2c->dev, wm8731);
if (ret != 0)
return ret;
ret = devm_snd_soc_register_component(&i2c->dev,
&soc_component_dev_wm8731, &wm8731_dai, 1);
if (ret != 0) {
dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret);
return ret;
}
return 0;
}
static const struct i2c_device_id wm8731_i2c_id[] = {
{ "wm8731", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, wm8731_i2c_id);
static struct i2c_driver wm8731_i2c_driver = {
.driver = {
.name = "wm8731",
.of_match_table = wm8731_of_match,
},
.probe = wm8731_i2c_probe,
.id_table = wm8731_i2c_id,
};
#endif
static int __init wm8731_modinit(void)
{
int ret = 0;
#if IS_ENABLED(CONFIG_I2C)
ret = i2c_add_driver(&wm8731_i2c_driver);
if (ret != 0) {
printk(KERN_ERR "Failed to register WM8731 I2C driver: %d\n",
ret);
}
#endif
#if defined(CONFIG_SPI_MASTER)
ret = spi_register_driver(&wm8731_spi_driver);
if (ret != 0) {
printk(KERN_ERR "Failed to register WM8731 SPI driver: %d\n",
ret);
}
#endif
return ret;
}
module_init(wm8731_modinit);
static void __exit wm8731_exit(void)
{
#if IS_ENABLED(CONFIG_I2C)
i2c_del_driver(&wm8731_i2c_driver);
#endif
#if defined(CONFIG_SPI_MASTER)
spi_unregister_driver(&wm8731_spi_driver);
#endif
}
module_exit(wm8731_exit);
EXPORT_SYMBOL_GPL(wm8731_regmap);
MODULE_DESCRIPTION("ASoC WM8731 driver");
MODULE_AUTHOR("Richard Purdie");

27
sound/soc/codecs/wm8731.h
View File

@ -12,6 +12,13 @@
#ifndef _WM8731_H
#define _WM8731_H
#include <linux/mutex.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
struct clk;
struct snd_pcm_hw_constraint_list;
/* WM8731 register space */
#define WM8731_LINVOL 0x00
@ -33,4 +40,24 @@
#define WM8731_DAI 0
#define WM8731_NUM_SUPPLIES 4
/* codec private data */
struct wm8731_priv {
struct regmap *regmap;
struct clk *mclk;
struct regulator_bulk_data supplies[WM8731_NUM_SUPPLIES];
const struct snd_pcm_hw_constraint_list *constraints;
unsigned int sysclk;
int sysclk_type;
int playback_fs;
bool deemph;
struct mutex lock;
};
extern const struct regmap_config wm8731_regmap;
int wm8731_init(struct device *dev, struct wm8731_priv *wm8731);
#endif

4
sound/soc/pxa/Kconfig
View File

@ -45,7 +45,7 @@ config SND_PXA2XX_SOC_CORGI
tristate "SoC Audio support for Sharp Zaurus SL-C7x0"
depends on SND_PXA2XX_SOC && PXA_SHARP_C7xx && I2C
select SND_PXA2XX_SOC_I2S
select SND_SOC_WM8731
select SND_SOC_WM8731_I2C
help
Say Y if you want to add support for SoC audio on Sharp
Zaurus SL-C7x0 models (Corgi, Shepherd, Husky).
@ -71,7 +71,7 @@ config SND_PXA2XX_SOC_POODLE
tristate "SoC Audio support for Poodle"
depends on SND_PXA2XX_SOC && MACH_POODLE && I2C
select SND_PXA2XX_SOC_I2S
select SND_SOC_WM8731
select SND_SOC_WM8731_I2C
help
Say Y if you want to add support for SoC audio on Sharp
Zaurus SL-5600 model (Poodle).