ASoC: codecs: tlv320aic3x: add SPI support

Added SPI support.
Signed-off-by: Jiri Prchal <jiri.prchal@aksignal.cz>
Link: https://lore.kernel.org/r/20210406142439.102396-5-jiri.prchal@aksignal.czSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/Kconfig

@@ -219,6 +219,7 @@ config SND_SOC_ALL_CODECS
 	imply SND_SOC_TLV320AIC32X4_I2C
 	imply SND_SOC_TLV320AIC32X4_SPI
 	imply SND_SOC_TLV320AIC3X_I2C
+	imply SND_SOC_TLV320AIC3X_SPI
 	imply SND_SOC_TPA6130A2
 	imply SND_SOC_TLV320DAC33
 	imply SND_SOC_TSCS42XX
@@ -1454,6 +1455,12 @@ config SND_SOC_TLV320AIC3X_I2C
 	select SND_SOC_TLV320AIC3X
 	select REGMAP_I2C
 
+config SND_SOC_TLV320AIC3X_SPI
+	tristate "Texas Instruments TLV320AIC3x audio CODECs - SPI"
+	depends on SPI_MASTER
+	select SND_SOC_TLV320AIC3X
+	select REGMAP_SPI
+
 config SND_SOC_TLV320DAC33
 	tristate
 	depends on I2C

sound/soc/codecs/Makefile

@@ -239,6 +239,7 @@ snd-soc-tlv320aic32x4-i2c-objs := tlv320aic32x4-i2c.o
 snd-soc-tlv320aic32x4-spi-objs := tlv320aic32x4-spi.o
 snd-soc-tlv320aic3x-objs := tlv320aic3x.o
 snd-soc-tlv320aic3x-i2c-objs := tlv320aic3x-i2c.o
+snd-soc-tlv320aic3x-spi-objs := tlv320aic3x-spi.o
 snd-soc-tlv320dac33-objs := tlv320dac33.o
 snd-soc-tlv320adcx140-objs := tlv320adcx140.o
 snd-soc-tscs42xx-objs := tscs42xx.o
@@ -560,6 +561,7 @@ obj-$(CONFIG_SND_SOC_TLV320AIC32X4_I2C)	+= snd-soc-tlv320aic32x4-i2c.o
 obj-$(CONFIG_SND_SOC_TLV320AIC32X4_SPI)	+= snd-soc-tlv320aic32x4-spi.o
 obj-$(CONFIG_SND_SOC_TLV320AIC3X)	+= snd-soc-tlv320aic3x.o
 obj-$(CONFIG_SND_SOC_TLV320AIC3X_I2C)	+= snd-soc-tlv320aic3x-i2c.o
+obj-$(CONFIG_SND_SOC_TLV320AIC3X_SPI)	+= snd-soc-tlv320aic3x-spi.o
 obj-$(CONFIG_SND_SOC_TLV320DAC33)	+= snd-soc-tlv320dac33.o
 obj-$(CONFIG_SND_SOC_TLV320ADCX140)	+= snd-soc-tlv320adcx140.o
 obj-$(CONFIG_SND_SOC_TSCS42XX)	+= snd-soc-tscs42xx.o

sound/soc/codecs/tlv320aic3x-spi.c

+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * ALSA SoC TLV320AIC3x codec driver SPI interface
+ *
+ * Author:      Arun KS, <arunks@mistralsolutions.com>
+ * Copyright:   (C) 2008 Mistral Solutions Pvt Ltd.,
+ *
+ * Based on sound/soc/codecs/wm8731.c by Richard Purdie
+ *
+ */
+
+#include <linux/spi/spi.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+#include <sound/soc.h>
+
+#include "tlv320aic3x.h"
+
+static int aic3x_spi_probe(struct spi_device *spi)
+{
+	struct regmap *regmap;
+	struct regmap_config config;
+	const struct spi_device_id *id = spi_get_device_id(spi);
+
+	config = aic3x_regmap;
+	config.reg_bits = 7;
+	config.pad_bits = 1;
+	config.val_bits = 8;
+	config.read_flag_mask = 0x01;
+
+	dev_dbg(&spi->dev, "probing tlv320aic3x spi device\n");
+
+	regmap = devm_regmap_init_spi(spi, &config);
+	return aic3x_probe(&spi->dev, regmap, id->driver_data);
+}
+
+static int aic3x_spi_remove(struct spi_device *spi)
+{
+	return aic3x_remove(&spi->dev);
+}
+
+static const struct spi_device_id aic3x_spi_id[] = {
+	{ "tlv320aic3x", AIC3X_MODEL_3X },
+	{ "tlv320aic33", AIC3X_MODEL_33 },
+	{ "tlv320aic3007", AIC3X_MODEL_3007 },
+	{ "tlv320aic3104", AIC3X_MODEL_3104 },
+	{ }
+};
+MODULE_DEVICE_TABLE(spi, aic3x_spi_id);
+
+static const struct of_device_id aic3x_of_id[] = {
+	{ .compatible = "ti,tlv320aic3x", },
+	{ .compatible = "ti,tlv320aic33" },
+	{ .compatible = "ti,tlv320aic3007" },
+	{ .compatible = "ti,tlv320aic3104" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, aic3x_of_id);
+
+static struct spi_driver aic3x_spi_driver = {
+	.driver = {
+		.name = "tlv320aic3x",
+		.owner = THIS_MODULE,
+		.of_match_table = aic3x_of_id,
+	},
+	.probe = aic3x_spi_probe,
+	.remove = aic3x_spi_remove,
+	.id_table = aic3x_spi_id,
+};
+
+module_spi_driver(aic3x_spi_driver);
+
+MODULE_DESCRIPTION("ASoC TLV320AIC3x codec driver SPI");
+MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>");
+MODULE_LICENSE("GPL");