platform/x86: int3472: Split into 2 drivers

The intel_skl_int3472.ko module contains 2 separate drivers,
the int3472_discrete platform driver and the int3472_tps68470
I2C-driver.

These 2 drivers contain very little shared code, only
skl_int3472_get_acpi_buffer() and skl_int3472_fill_cldb() are
shared.

Split the module into 2 drivers, linking the little shared code
directly into both.

This will allow us to add soft-module dependencies for the
tps68470 clk, gpio and regulator drivers to the new
intel_skl_int3472_tps68470.ko to help with probe ordering issues
without causing these modules to get loaded on boards which only
use the int3472_discrete platform driver.

While at it also rename the .c and .h files to remove the
cumbersome intel_skl_int3472_ prefix.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20211203102857.44539-8-hdegoede@redhat.com

drivers/platform/x86/intel/int3472/Makefile

-obj-$(CONFIG_INTEL_SKL_INT3472)		+= intel_skl_int3472.o
-intel_skl_int3472-y			:= intel_skl_int3472_common.o \
-					   intel_skl_int3472_discrete.o \
-					   intel_skl_int3472_tps68470.o \
-					   intel_skl_int3472_clk_and_regulator.o
+obj-$(CONFIG_INTEL_SKL_INT3472)		+= intel_skl_int3472_discrete.o \
+					   intel_skl_int3472_tps68470.o
+intel_skl_int3472_discrete-y		:= discrete.o clk_and_regulator.o common.o
+intel_skl_int3472_tps68470-y		:= tps68470.o common.o

drivers/platform/x86/intel/int3472/intel_skl_int3472_clk_and_regulator.c → drivers/platform/x86/intel/int3472/clk_and_regulator.c

@@ -9,7 +9,7 @@
 #include <linux/regulator/driver.h>
 #include <linux/slab.h>
 
-#include "intel_skl_int3472_common.h"
+#include "common.h"
 
 /*
  * The regulators have to have .ops to be valid, but the only ops we actually

drivers/platform/x86/intel/int3472/intel_skl_int3472_common.c → drivers/platform/x86/intel/int3472/common.c

@@ -2,11 +2,9 @@
 /* Author: Dan Scally <djrscally@gmail.com> */
 
 #include <linux/acpi.h>
-#include <linux/i2c.h>
-#include <linux/platform_device.h>
 #include <linux/slab.h>
 
-#include "intel_skl_int3472_common.h"
+#include "common.h"
 
 union acpi_object *skl_int3472_get_acpi_buffer(struct acpi_device *adev, char *id)
 {
@@ -54,53 +52,3 @@ int skl_int3472_fill_cldb(struct acpi_device *adev, struct int3472_cldb *cldb)
 	kfree(obj);
 	return ret;
 }
-
-static const struct acpi_device_id int3472_device_id[] = {
-	{ "INT3472", 0 },
-	{ }
-};
-MODULE_DEVICE_TABLE(acpi, int3472_device_id);
-
-static struct platform_driver int3472_discrete = {
-	.driver = {
-		.name = "int3472-discrete",
-		.acpi_match_table = int3472_device_id,
-	},
-	.probe = skl_int3472_discrete_probe,
-	.remove = skl_int3472_discrete_remove,
-};
-
-static struct i2c_driver int3472_tps68470 = {
-	.driver = {
-		.name = "int3472-tps68470",
-		.acpi_match_table = int3472_device_id,
-	},
-	.probe_new = skl_int3472_tps68470_probe,
-};
-
-static int skl_int3472_init(void)
-{
-	int ret;
-
-	ret = platform_driver_register(&int3472_discrete);
-	if (ret)
-		return ret;
-
-	ret = i2c_register_driver(THIS_MODULE, &int3472_tps68470);
-	if (ret)
-		platform_driver_unregister(&int3472_discrete);
-
-	return ret;
-}
-module_init(skl_int3472_init);
-
-static void skl_int3472_exit(void)
-{
-	platform_driver_unregister(&int3472_discrete);
-	i2c_del_driver(&int3472_tps68470);
-}
-module_exit(skl_int3472_exit);
-
-MODULE_DESCRIPTION("Intel SkyLake INT3472 ACPI Device Driver");
-MODULE_AUTHOR("Daniel Scally <djrscally@gmail.com>");
-MODULE_LICENSE("GPL v2");

drivers/platform/x86/intel/int3472/intel_skl_int3472_common.h → drivers/platform/x86/intel/int3472/common.h

@@ -105,9 +105,6 @@ struct int3472_discrete_device {
 	struct gpiod_lookup_table gpios;
 };
 
-int skl_int3472_discrete_probe(struct platform_device *pdev);
-int skl_int3472_discrete_remove(struct platform_device *pdev);
-int skl_int3472_tps68470_probe(struct i2c_client *client);
 union acpi_object *skl_int3472_get_acpi_buffer(struct acpi_device *adev,
 					       char *id);
 int skl_int3472_fill_cldb(struct acpi_device *adev, struct int3472_cldb *cldb);

drivers/platform/x86/intel/int3472/intel_skl_int3472_discrete.c → drivers/platform/x86/intel/int3472/discrete.c

@@ -14,7 +14,7 @@
 #include <linux/platform_device.h>
 #include <linux/uuid.h>
 
-#include "intel_skl_int3472_common.h"
+#include "common.h"
 
 /*
  * 79234640-9e10-4fea-a5c1-b5aa8b19756f
@@ -332,7 +332,9 @@ static int skl_int3472_parse_crs(struct int3472_discrete_device *int3472)
 	return 0;
 }
 
-int skl_int3472_discrete_probe(struct platform_device *pdev)
+static int skl_int3472_discrete_remove(struct platform_device *pdev);
+
+static int skl_int3472_discrete_probe(struct platform_device *pdev)
 {
 	struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);
 	struct int3472_discrete_device *int3472;
@@ -395,7 +397,7 @@ int skl_int3472_discrete_probe(struct platform_device *pdev)
 	return ret;
 }
 
-int skl_int3472_discrete_remove(struct platform_device *pdev)
+static int skl_int3472_discrete_remove(struct platform_device *pdev)
 {
 	struct int3472_discrete_device *int3472 = platform_get_drvdata(pdev);
 
@@ -411,3 +413,23 @@ int skl_int3472_discrete_remove(struct platform_device *pdev)
 
 	return 0;
 }
+
+static const struct acpi_device_id int3472_device_id[] = {
+	{ "INT3472", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, int3472_device_id);
+
+static struct platform_driver int3472_discrete = {
+	.driver = {
+		.name = "int3472-discrete",
+		.acpi_match_table = int3472_device_id,
+	},
+	.probe = skl_int3472_discrete_probe,
+	.remove = skl_int3472_discrete_remove,
+};
+module_platform_driver(int3472_discrete);
+
+MODULE_DESCRIPTION("Intel SkyLake INT3472 ACPI Discrete Device Driver");
+MODULE_AUTHOR("Daniel Scally <djrscally@gmail.com>");
+MODULE_LICENSE("GPL v2");

drivers/platform/x86/intel/int3472/intel_skl_int3472_tps68470.c → drivers/platform/x86/intel/int3472/tps68470.c

@@ -7,7 +7,7 @@
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
 
-#include "intel_skl_int3472_common.h"
+#include "common.h"
 
 #define DESIGNED_FOR_CHROMEOS		1
 #define DESIGNED_FOR_WINDOWS		2
@@ -95,7 +95,7 @@ static int skl_int3472_tps68470_calc_type(struct acpi_device *adev)
 	return DESIGNED_FOR_WINDOWS;
 }
 
-int skl_int3472_tps68470_probe(struct i2c_client *client)
+static int skl_int3472_tps68470_probe(struct i2c_client *client)
 {
 	struct acpi_device *adev = ACPI_COMPANION(&client->dev);
 	struct regmap *regmap;
@@ -135,3 +135,22 @@ int skl_int3472_tps68470_probe(struct i2c_client *client)
 
 	return ret;
 }
+
+static const struct acpi_device_id int3472_device_id[] = {
+	{ "INT3472", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, int3472_device_id);
+
+static struct i2c_driver int3472_tps68470 = {
+	.driver = {
+		.name = "int3472-tps68470",
+		.acpi_match_table = int3472_device_id,
+	},
+	.probe_new = skl_int3472_tps68470_probe,
+};
+module_i2c_driver(int3472_tps68470);
+
+MODULE_DESCRIPTION("Intel SkyLake INT3472 ACPI TPS68470 Device Driver");
+MODULE_AUTHOR("Daniel Scally <djrscally@gmail.com>");
+MODULE_LICENSE("GPL v2");