ASoC: wm8731: Factor out the I2C and SPI bus code into separate modules

Placing both the I2C and SPI code in the same module causes problems with
mixes of modular and non-modular builds of the buses so it's generally bad
practice. As with other drivers split the bus code out of the WM8731 driver
into separate modules.

Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220325153121.1598494-6-broonie@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 69 insertions, 0 deletions

diff --git a/sound/soc/codecs/wm8731-i2c.c b/sound/soc/codecs/wm8731-i2c.c
new file mode 100644
index 000000000000..c70f5db891e7
--- /dev/null
+++ b/sound/soc/codecs/wm8731-i2c.c
@@ -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");