ASoC: pcm179x: Split into core and SPI parts

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>

1 files changed, 11 insertions, 41 deletions

diff --git a/sound/soc/codecs/pcm179x.c b/sound/soc/codecs/pcm179x.c
index a56c7b767d90..8f20f70af23e 100644
--- a/sound/soc/codecs/pcm179x.c
+++ b/sound/soc/codecs/pcm179x.c
@@ -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 = 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;
-	}
+	pcm179x->regmap = regmap;
+	dev_set_drvdata(dev, pcm179x);
 
-	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>");