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ASoC: pcm179x: Split into core and SPI parts

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The pcm179x family supports both SPI and I2C for configuration. This
patch splits the driver into core and SPI parts, in preparation for
I2C support.

Signed-off-by: Jacob Siverskog <jacob@teenage.engineering>
Reviewed-by: Johan Hovold <johan@kernel.org>
Acked-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jacob Siverskog 2016-01-22 13:39:53 +01:00 committed by Mark Brown
parent 92e963f50f
commit 1b347b6891
5 changed files with 99 additions and 43 deletions
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11
sound/soc/codecs/Kconfig
View File

@ -87,7 +87,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_ML26124 if I2C
select SND_SOC_NAU8825 if I2C
select SND_SOC_PCM1681 if I2C
select SND_SOC_PCM179X if SPI_MASTER
select SND_SOC_PCM179X_SPI if SPI_MASTER
select SND_SOC_PCM3008
select SND_SOC_PCM3168A_I2C if I2C
select SND_SOC_PCM3168A_SPI if SPI_MASTER
@ -527,8 +527,15 @@ config SND_SOC_PCM1681
depends on I2C
config SND_SOC_PCM179X
tristate "Texas Instruments PCM179X CODEC"
tristate
config SND_SOC_PCM179X_SPI
tristate "Texas Instruments PCM179X CODEC (SPI)"
depends on SPI_MASTER
select SND_SOC_PCM179X
help
Enable support for Texas Instruments PCM179x CODEC.
Select this if your PCM179x is connected via an SPI bus.
config SND_SOC_PCM3008
tristate

2
sound/soc/codecs/Makefile
View File

@ -81,6 +81,7 @@ snd-soc-ml26124-objs := ml26124.o
snd-soc-nau8825-objs := nau8825.o
snd-soc-pcm1681-objs := pcm1681.o
snd-soc-pcm179x-codec-objs := pcm179x.o
snd-soc-pcm179x-spi-objs := pcm179x-spi.o
snd-soc-pcm3008-objs := pcm3008.o
snd-soc-pcm3168a-objs := pcm3168a.o
snd-soc-pcm3168a-i2c-objs := pcm3168a-i2c.o
@ -285,6 +286,7 @@ obj-$(CONFIG_SND_SOC_ML26124) += snd-soc-ml26124.o
obj-$(CONFIG_SND_SOC_NAU8825) += snd-soc-nau8825.o
obj-$(CONFIG_SND_SOC_PCM1681) += snd-soc-pcm1681.o
obj-$(CONFIG_SND_SOC_PCM179X) += snd-soc-pcm179x-codec.o
obj-$(CONFIG_SND_SOC_PCM179X_SPI) += snd-soc-pcm179x-spi.o
obj-$(CONFIG_SND_SOC_PCM3008) += snd-soc-pcm3008.o
obj-$(CONFIG_SND_SOC_PCM3168A) += snd-soc-pcm3168a.o
obj-$(CONFIG_SND_SOC_PCM3168A_I2C) += snd-soc-pcm3168a-i2c.o

72
sound/soc/codecs/pcm179x-spi.c Normal file
View File

@ -0,0 +1,72 @@
/*
* PCM179X ASoC SPI driver
*
* Copyright (c) Amarula Solutions B.V. 2013
*
* Michael Trimarchi <michael@amarulasolutions.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 (at your option) any later version.
*
* 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/of.h>
#include <linux/spi/spi.h>
#include <linux/regmap.h>
#include "pcm179x.h"
static int pcm179x_spi_probe(struct spi_device *spi)
{
struct regmap *regmap;
int ret;
regmap = devm_regmap_init_spi(spi, &pcm179x_regmap_config);
if (IS_ERR(regmap)) {
ret = PTR_ERR(regmap);
dev_err(&spi->dev, "Failed to allocate regmap: %d\n", ret);
return ret;
}
return pcm179x_common_init(&spi->dev, regmap);
}
static int pcm179x_spi_remove(struct spi_device *spi)
{
return pcm179x_common_exit(&spi->dev);
}
static const struct of_device_id pcm179x_of_match[] = {
{ .compatible = "ti,pcm1792a", },
{ }
};
MODULE_DEVICE_TABLE(of, pcm179x_of_match);
static const struct spi_device_id pcm179x_spi_ids[] = {
{ "pcm179x", 0 },
{ },
};
MODULE_DEVICE_TABLE(spi, pcm179x_spi_ids);
static struct spi_driver pcm179x_spi_driver = {
.driver = {
.name = "pcm179x",
.of_match_table = of_match_ptr(pcm179x_of_match),
},
.id_table = pcm179x_spi_ids,
.probe = pcm179x_spi_probe,
.remove = pcm179x_spi_remove,
};
module_spi_driver(pcm179x_spi_driver);
MODULE_DESCRIPTION("ASoC PCM179X SPI driver");
MODULE_AUTHOR("Michael Trimarchi <michael@amarulasolutions.com>");
MODULE_LICENSE("GPL");

52
sound/soc/codecs/pcm179x.c
View File

@ -20,7 +20,6 @@
#include <linux/slab.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/spi/spi.h>
#include <sound/core.h>
#include <sound/pcm.h>
@ -29,7 +28,6 @@
#include <sound/soc.h>
#include <sound/tlv.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include "pcm179x.h"
@ -194,13 +192,7 @@ static struct snd_soc_dai_driver pcm179x_dai = {
.ops = &pcm179x_dai_ops,
};
static const struct of_device_id pcm179x_of_match[] = {
{ .compatible = "ti,pcm1792a", },
{ }
};
MODULE_DEVICE_TABLE(of, pcm179x_of_match);
static const struct regmap_config pcm179x_regmap = {
const struct regmap_config pcm179x_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = 23,
@ -209,6 +201,7 @@ static const struct regmap_config pcm179x_regmap = {
.writeable_reg = pcm179x_writeable_reg,
.readable_reg = pcm179x_accessible_reg,
};
EXPORT_SYMBOL_GPL(pcm179x_regmap_config);
static struct snd_soc_codec_driver soc_codec_dev_pcm179x = {
.controls = pcm179x_controls,
@ -219,52 +212,29 @@ static struct snd_soc_codec_driver soc_codec_dev_pcm179x = {
.num_dapm_routes = ARRAY_SIZE(pcm179x_dapm_routes),
};
static int pcm179x_spi_probe(struct spi_device *spi)
int pcm179x_common_init(struct device *dev, struct regmap *regmap)
{
struct pcm179x_private *pcm179x;
int ret;
pcm179x = devm_kzalloc(&spi->dev, sizeof(struct pcm179x_private),
pcm179x = devm_kzalloc(dev, sizeof(struct pcm179x_private),
GFP_KERNEL);
if (!pcm179x)
return -ENOMEM;
spi_set_drvdata(spi, pcm179x);
pcm179x->regmap = regmap;
dev_set_drvdata(dev, pcm179x);
pcm179x->regmap = devm_regmap_init_spi(spi, &pcm179x_regmap);
if (IS_ERR(pcm179x->regmap)) {
ret = PTR_ERR(pcm179x->regmap);
dev_err(&spi->dev, "Failed to register regmap: %d\n", ret);
return ret;
}
return snd_soc_register_codec(&spi->dev,
return snd_soc_register_codec(dev,
&soc_codec_dev_pcm179x, &pcm179x_dai, 1);
}
EXPORT_SYMBOL_GPL(pcm179x_common_init);
static int pcm179x_spi_remove(struct spi_device *spi)
int pcm179x_common_exit(struct device *dev)
{
snd_soc_unregister_codec(&spi->dev);
snd_soc_unregister_codec(dev);
return 0;
}
static const struct spi_device_id pcm179x_spi_ids[] = {
{ "pcm179x", 0 },
{ },
};
MODULE_DEVICE_TABLE(spi, pcm179x_spi_ids);
static struct spi_driver pcm179x_codec_driver = {
.driver = {
.name = "pcm179x",
.of_match_table = of_match_ptr(pcm179x_of_match),
},
.id_table = pcm179x_spi_ids,
.probe = pcm179x_spi_probe,
.remove = pcm179x_spi_remove,
};
module_spi_driver(pcm179x_codec_driver);
EXPORT_SYMBOL_GPL(pcm179x_common_exit);
MODULE_DESCRIPTION("ASoC PCM179X driver");
MODULE_AUTHOR("Michael Trimarchi <michael@amarulasolutions.com>");

5
sound/soc/codecs/pcm179x.h
View File

@ -24,4 +24,9 @@
#define PCM1792A_FORMATS (SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S24_LE | \
SNDRV_PCM_FMTBIT_S16_LE)
extern const struct regmap_config pcm179x_regmap_config;
int pcm179x_common_init(struct device *dev, struct regmap *regmap);
int pcm179x_common_exit(struct device *dev);
#endif