ASoC: wm8804: Split out bus drivers

Simplify dependencies by using new style split out bus interfaces.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

6 files changed, 162 insertions, 126 deletions

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 064e6c18e109..1d17988df796 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -141,7 +141,8 @@ config SND_SOC_ALL_CODECS
         select SND_SOC_WM8770 if SPI_MASTER
         select SND_SOC_WM8776 if SND_SOC_I2C_AND_SPI
         select SND_SOC_WM8782
-        select SND_SOC_WM8804 if SND_SOC_I2C_AND_SPI
+        select SND_SOC_WM8804_I2C if I2C
+        select SND_SOC_WM8804_SPI if SPI_MASTER
         select SND_SOC_WM8900 if I2C
         select SND_SOC_WM8903 if I2C
         select SND_SOC_WM8904 if I2C
@@ -744,8 +745,19 @@ config SND_SOC_WM8782
         tristate
 
 config SND_SOC_WM8804
-        tristate "Wolfson Microelectronics WM8804 S/PDIF transceiver"
-        depends on SND_SOC_I2C_AND_SPI
+        tristate
+
+config SND_SOC_WM8804_I2C
+        tristate "Wolfson Microelectronics WM8804 S/PDIF transceiver I2C"
+        depends on I2C
+        select SND_SOC_WM8804
+        select REGMAP_I2C
+
+config SND_SOC_WM8804_SPI
+        tristate "Wolfson Microelectronics WM8804 S/PDIF transceiver SPI"
+        depends on SPI_MASTER
+        select SND_SOC_WM8804
+        select REGMAP_SPI
 
 config SND_SOC_WM8900
         tristate
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 69b8666d187a..7acb6c174cb4 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -145,6 +145,8 @@ snd-soc-wm8770-objs := wm8770.o
 snd-soc-wm8776-objs := wm8776.o
 snd-soc-wm8782-objs := wm8782.o
 snd-soc-wm8804-objs := wm8804.o
+snd-soc-wm8804-i2c-objs := wm8804-i2c.o
+snd-soc-wm8804-spi-objs := wm8804-spi.o
 snd-soc-wm8900-objs := wm8900.o
 snd-soc-wm8903-objs := wm8903.o
 snd-soc-wm8904-objs := wm8904.o
@@ -323,6 +325,8 @@ obj-$(CONFIG_SND_SOC_WM8770)	+= snd-soc-wm8770.o
 obj-$(CONFIG_SND_SOC_WM8776)    += snd-soc-wm8776.o
 obj-$(CONFIG_SND_SOC_WM8782)    += snd-soc-wm8782.o
 obj-$(CONFIG_SND_SOC_WM8804)    += snd-soc-wm8804.o
+obj-$(CONFIG_SND_SOC_WM8804_I2C) += snd-soc-wm8804-i2c.o
+obj-$(CONFIG_SND_SOC_WM8804_SPI) += snd-soc-wm8804-spi.o
 obj-$(CONFIG_SND_SOC_WM8900)    += snd-soc-wm8900.o
 obj-$(CONFIG_SND_SOC_WM8903)    += snd-soc-wm8903.o
 obj-$(CONFIG_SND_SOC_WM8904)    += snd-soc-wm8904.o
diff --git a/sound/soc/codecs/wm8804-i2c.c b/sound/soc/codecs/wm8804-i2c.c
new file mode 100644
index 000000000000..5bd4af2b4059
--- /dev/null
+++ b/sound/soc/codecs/wm8804-i2c.c
@@ -0,0 +1,64 @@
+/*
+ * wm8804-i2c.c  --  WM8804 S/PDIF transceiver driver - I2C
+ *
+ * Copyright 2015 Cirrus Logic Inc
+ *
+ * Author: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/i2c.h>
+
+#include "wm8804.h"
+
+static int wm8804_i2c_probe(struct i2c_client *i2c,
+                            const struct i2c_device_id *id)
+{
+        struct regmap *regmap;
+
+        regmap = devm_regmap_init_i2c(i2c, &wm8804_regmap_config);
+        if (IS_ERR(regmap))
+                return PTR_ERR(regmap);
+
+        return wm8804_probe(&i2c->dev, regmap);
+}
+
+static int wm8804_i2c_remove(struct i2c_client *i2c)
+{
+        wm8804_remove(&i2c->dev);
+        return 0;
+}
+
+static const struct i2c_device_id wm8804_i2c_id[] = {
+        { "wm8804", 0 },
+        { }
+};
+MODULE_DEVICE_TABLE(i2c, wm8804_i2c_id);
+
+static const struct of_device_id wm8804_of_match[] = {
+        { .compatible = "wlf,wm8804", },
+        { }
+};
+MODULE_DEVICE_TABLE(of, wm8804_of_match);
+
+static struct i2c_driver wm8804_i2c_driver = {
+        .driver = {
+                .name = "wm8804",
+                .owner = THIS_MODULE,
+                .of_match_table = wm8804_of_match,
+        },
+        .probe = wm8804_i2c_probe,
+        .remove = wm8804_i2c_remove,
+        .id_table = wm8804_i2c_id
+};
+
+module_i2c_driver(wm8804_i2c_driver);
+
+MODULE_DESCRIPTION("ASoC WM8804 driver - I2C");
+MODULE_AUTHOR("Charles Keepax <ckeepax@opensource.wolfsonmicro.com>");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/codecs/wm8804-spi.c b/sound/soc/codecs/wm8804-spi.c
new file mode 100644
index 000000000000..287e11e90794
--- /dev/null
+++ b/sound/soc/codecs/wm8804-spi.c
@@ -0,0 +1,56 @@
+/*
+ * wm8804-spi.c  --  WM8804 S/PDIF transceiver driver - SPI
+ *
+ * Copyright 2015 Cirrus Logic Inc
+ *
+ * Author: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/spi/spi.h>
+
+#include "wm8804.h"
+
+static int wm8804_spi_probe(struct spi_device *spi)
+{
+        struct regmap *regmap;
+
+        regmap = devm_regmap_init_spi(spi, &wm8804_regmap_config);
+        if (IS_ERR(regmap))
+                return PTR_ERR(regmap);
+
+        return wm8804_probe(&spi->dev, regmap);
+}
+
+static int wm8804_spi_remove(struct spi_device *spi)
+{
+        wm8804_remove(&spi->dev);
+        return 0;
+}
+
+static const struct of_device_id wm8804_of_match[] = {
+        { .compatible = "wlf,wm8804", },
+        { }
+};
+MODULE_DEVICE_TABLE(of, wm8804_of_match);
+
+static struct spi_driver wm8804_spi_driver = {
+        .driver = {
+                .name = "wm8804",
+                .owner = THIS_MODULE,
+                .of_match_table = wm8804_of_match,
+        },
+        .probe = wm8804_spi_probe,
+        .remove = wm8804_spi_remove
+};
+
+module_spi_driver(wm8804_spi_driver);
+
+MODULE_DESCRIPTION("ASoC WM8804 driver - SPI");
+MODULE_AUTHOR("Charles Keepax <ckeepax@opensource.wolfsonmicro.com>");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/codecs/wm8804.c b/sound/soc/codecs/wm8804.c
index b2b0e68f707e..b5a04fc5060f 100644
--- a/sound/soc/codecs/wm8804.c
+++ b/sound/soc/codecs/wm8804.c
@@ -15,10 +15,7 @@
 #include <linux/init.h>
 #include <linux/delay.h>
 #include <linux/pm.h>
-#include <linux/i2c.h>
 #include <linux/of_device.h>
-#include <linux/spi/spi.h>
-#include <linux/regmap.h>
 #include <linux/regulator/consumer.h>
 #include <linux/slab.h>
 #include <sound/core.h>
@@ -518,7 +515,7 @@ static int wm8804_set_bias_level(struct snd_soc_codec *codec,
         return 0;
 }
 
-static int wm8804_remove(struct snd_soc_codec *codec)
+static int wm8804_codec_remove(struct snd_soc_codec *codec)
 {
         struct wm8804_priv *wm8804;
         int i;
@@ -531,7 +528,7 @@ static int wm8804_remove(struct snd_soc_codec *codec)
         return 0;
 }
 
-static int wm8804_probe(struct snd_soc_codec *codec)
+static int wm8804_codec_probe(struct snd_soc_codec *codec)
 {
         struct wm8804_priv *wm8804;
         int i, id1, id2, ret;
@@ -649,8 +646,8 @@ static struct snd_soc_dai_driver wm8804_dai = {
 };
 
 static const struct snd_soc_codec_driver soc_codec_dev_wm8804 = {
-        .probe = wm8804_probe,
-        .remove = wm8804_remove,
+        .probe = wm8804_codec_probe,
+        .remove = wm8804_codec_remove,
         .set_bias_level = wm8804_set_bias_level,
         .idle_bias_off = true,
 
@@ -658,13 +655,7 @@ static const struct snd_soc_codec_driver soc_codec_dev_wm8804 = {
         .num_controls = ARRAY_SIZE(wm8804_snd_controls),
 };
 
-static const struct of_device_id wm8804_of_match[] = {
-        { .compatible = "wlf,wm8804", },
-        { }
-};
-MODULE_DEVICE_TABLE(of, wm8804_of_match);
-
-static const struct regmap_config wm8804_regmap_config = {
+const struct regmap_config wm8804_regmap_config = {
         .reg_bits = 8,
         .val_bits = 8,
 
@@ -675,128 +666,30 @@ static const struct regmap_config wm8804_regmap_config = {
         .reg_defaults = wm8804_reg_defaults,
         .num_reg_defaults = ARRAY_SIZE(wm8804_reg_defaults),
 };
+EXPORT_SYMBOL_GPL(wm8804_regmap_config);
 
-#if defined(CONFIG_SPI_MASTER)
-static int wm8804_spi_probe(struct spi_device *spi)
+int wm8804_probe(struct device *dev, struct regmap *regmap)
 {
         struct wm8804_priv *wm8804;
-        int ret;
 
-        wm8804 = devm_kzalloc(&spi->dev, sizeof *wm8804, GFP_KERNEL);
+        wm8804 = devm_kzalloc(dev, sizeof(*wm8804), GFP_KERNEL);
         if (!wm8804)
                 return -ENOMEM;
 
-        wm8804->regmap = devm_regmap_init_spi(spi, &wm8804_regmap_config);
-        if (IS_ERR(wm8804->regmap)) {
-                ret = PTR_ERR(wm8804->regmap);
-                return ret;
-        }
-
-        spi_set_drvdata(spi, wm8804);
+        dev_set_drvdata(dev, wm8804);
 
-        ret = snd_soc_register_codec(&spi->dev,
-                                     &soc_codec_dev_wm8804, &wm8804_dai, 1);
-
-        return ret;
-}
-
-static int wm8804_spi_remove(struct spi_device *spi)
-{
-        snd_soc_unregister_codec(&spi->dev);
-        return 0;
-}
-
-static struct spi_driver wm8804_spi_driver = {
-        .driver = {
-                .name = "wm8804",
-                .owner = THIS_MODULE,
-                .of_match_table = wm8804_of_match,
-        },
-        .probe = wm8804_spi_probe,
-        .remove = wm8804_spi_remove
-};
-#endif
-
-#if IS_ENABLED(CONFIG_I2C)
-static int wm8804_i2c_probe(struct i2c_client *i2c,
-                            const struct i2c_device_id *id)
-{
-        struct wm8804_priv *wm8804;
-        int ret;
-
-        wm8804 = devm_kzalloc(&i2c->dev, sizeof *wm8804, GFP_KERNEL);
-        if (!wm8804)
-                return -ENOMEM;
+        wm8804->regmap = regmap;
 
-        wm8804->regmap = devm_regmap_init_i2c(i2c, &wm8804_regmap_config);
-        if (IS_ERR(wm8804->regmap)) {
-                ret = PTR_ERR(wm8804->regmap);
-                return ret;
-        }
-
-        i2c_set_clientdata(i2c, wm8804);
-
-        ret = snd_soc_register_codec(&i2c->dev,
-                                     &soc_codec_dev_wm8804, &wm8804_dai, 1);
-        return ret;
-}
-
-static int wm8804_i2c_remove(struct i2c_client *i2c)
-{
-        snd_soc_unregister_codec(&i2c->dev);
-        return 0;
-}
-
-static const struct i2c_device_id wm8804_i2c_id[] = {
-        { "wm8804", 0 },
-        { }
-};
-MODULE_DEVICE_TABLE(i2c, wm8804_i2c_id);
-
-static struct i2c_driver wm8804_i2c_driver = {
-        .driver = {
-                .name = "wm8804",
-                .owner = THIS_MODULE,
-                .of_match_table = wm8804_of_match,
-        },
-        .probe = wm8804_i2c_probe,
-        .remove = wm8804_i2c_remove,
-        .id_table = wm8804_i2c_id
-};
-#endif
-
-static int __init wm8804_modinit(void)
-{
-        int ret = 0;
-
-#if IS_ENABLED(CONFIG_I2C)
-        ret = i2c_add_driver(&wm8804_i2c_driver);
-        if (ret) {
-                printk(KERN_ERR "Failed to register wm8804 I2C driver: %d\n",
-                       ret);
-        }
-#endif
-#if defined(CONFIG_SPI_MASTER)
-        ret = spi_register_driver(&wm8804_spi_driver);
-        if (ret != 0) {
-                printk(KERN_ERR "Failed to register wm8804 SPI driver: %d\n",
-                       ret);
-        }
-#endif
-        return ret;
+        return snd_soc_register_codec(dev, &soc_codec_dev_wm8804,
+                                      &wm8804_dai, 1);
 }
-module_init(wm8804_modinit);
+EXPORT_SYMBOL_GPL(wm8804_probe);
 
-static void __exit wm8804_exit(void)
+void wm8804_remove(struct device *dev)
 {
-#if IS_ENABLED(CONFIG_I2C)
-        i2c_del_driver(&wm8804_i2c_driver);
-#endif
-#if defined(CONFIG_SPI_MASTER)
-        spi_unregister_driver(&wm8804_spi_driver);
-#endif
+        snd_soc_unregister_codec(dev);
 }
-module_exit(wm8804_exit);
+EXPORT_SYMBOL_GPL(wm8804_remove);
 
 MODULE_DESCRIPTION("ASoC WM8804 driver");
 MODULE_AUTHOR("Dimitris Papastamos <dp@opensource.wolfsonmicro.com>");
diff --git a/sound/soc/codecs/wm8804.h b/sound/soc/codecs/wm8804.h
index e72d4f4ba6b1..a39a2563dc67 100644
--- a/sound/soc/codecs/wm8804.h
+++ b/sound/soc/codecs/wm8804.h
@@ -13,6 +13,8 @@
 #ifndef _WM8804_H
 #define _WM8804_H
 
+#include <linux/regmap.h>
+
 /*
  * Register values.
  */
@@ -62,4 +64,9 @@
 #define WM8804_MCLKDIV_256FS                    0
 #define WM8804_MCLKDIV_128FS                    1
 
+extern const struct regmap_config wm8804_regmap_config;
+
+int wm8804_probe(struct device *dev, struct regmap *regmap);
+void wm8804_remove(struct device *dev);
+
 #endif  /* _WM8804_H */