platform/x86: int3472: Split into 2 drivers
authorHans de Goede <hdegoede@redhat.com>
Fri, 3 Dec 2021 10:28:50 +0000 (11:28 +0100)
committerHans de Goede <hdegoede@redhat.com>
Mon, 13 Dec 2021 10:44:48 +0000 (11:44 +0100)
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
drivers/platform/x86/intel/int3472/clk_and_regulator.c [moved from drivers/platform/x86/intel/int3472/intel_skl_int3472_clk_and_regulator.c with 99% similarity]
drivers/platform/x86/intel/int3472/common.c [new file with mode: 0644]
drivers/platform/x86/intel/int3472/common.h [moved from drivers/platform/x86/intel/int3472/intel_skl_int3472_common.h with 94% similarity]
drivers/platform/x86/intel/int3472/discrete.c [moved from drivers/platform/x86/intel/int3472/intel_skl_int3472_discrete.c with 93% similarity]
drivers/platform/x86/intel/int3472/intel_skl_int3472_common.c [deleted file]
drivers/platform/x86/intel/int3472/tps68470.c [moved from drivers/platform/x86/intel/int3472/intel_skl_int3472_tps68470.c with 85% similarity]

index 2362e04..771e720 100644 (file)
@@ -1,5 +1,4 @@
-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
@@ -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
diff --git a/drivers/platform/x86/intel/int3472/common.c b/drivers/platform/x86/intel/int3472/common.c
new file mode 100644 (file)
index 0000000..350655a
--- /dev/null
@@ -0,0 +1,54 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Author: Dan Scally <djrscally@gmail.com> */
+
+#include <linux/acpi.h>
+#include <linux/slab.h>
+
+#include "common.h"
+
+union acpi_object *skl_int3472_get_acpi_buffer(struct acpi_device *adev, char *id)
+{
+       struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+       acpi_handle handle = adev->handle;
+       union acpi_object *obj;
+       acpi_status status;
+
+       status = acpi_evaluate_object(handle, id, NULL, &buffer);
+       if (ACPI_FAILURE(status))
+               return ERR_PTR(-ENODEV);
+
+       obj = buffer.pointer;
+       if (!obj)
+               return ERR_PTR(-ENODEV);
+
+       if (obj->type != ACPI_TYPE_BUFFER) {
+               acpi_handle_err(handle, "%s object is not an ACPI buffer\n", id);
+               kfree(obj);
+               return ERR_PTR(-EINVAL);
+       }
+
+       return obj;
+}
+
+int skl_int3472_fill_cldb(struct acpi_device *adev, struct int3472_cldb *cldb)
+{
+       union acpi_object *obj;
+       int ret;
+
+       obj = skl_int3472_get_acpi_buffer(adev, "CLDB");
+       if (IS_ERR(obj))
+               return PTR_ERR(obj);
+
+       if (obj->buffer.length > sizeof(*cldb)) {
+               acpi_handle_err(adev->handle, "The CLDB buffer is too large\n");
+               ret = -EINVAL;
+               goto out_free_obj;
+       }
+
+       memcpy(cldb, obj->buffer.pointer, obj->buffer.length);
+       ret = 0;
+
+out_free_obj:
+       kfree(obj);
+       return ret;
+}
@@ -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);
@@ -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 @@ err_put_sensor:
        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");
diff --git a/drivers/platform/x86/intel/int3472/intel_skl_int3472_common.c b/drivers/platform/x86/intel/int3472/intel_skl_int3472_common.c
deleted file mode 100644 (file)
index 497e74f..0000000
+++ /dev/null
@@ -1,106 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/* 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"
-
-union acpi_object *skl_int3472_get_acpi_buffer(struct acpi_device *adev, char *id)
-{
-       struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
-       acpi_handle handle = adev->handle;
-       union acpi_object *obj;
-       acpi_status status;
-
-       status = acpi_evaluate_object(handle, id, NULL, &buffer);
-       if (ACPI_FAILURE(status))
-               return ERR_PTR(-ENODEV);
-
-       obj = buffer.pointer;
-       if (!obj)
-               return ERR_PTR(-ENODEV);
-
-       if (obj->type != ACPI_TYPE_BUFFER) {
-               acpi_handle_err(handle, "%s object is not an ACPI buffer\n", id);
-               kfree(obj);
-               return ERR_PTR(-EINVAL);
-       }
-
-       return obj;
-}
-
-int skl_int3472_fill_cldb(struct acpi_device *adev, struct int3472_cldb *cldb)
-{
-       union acpi_object *obj;
-       int ret;
-
-       obj = skl_int3472_get_acpi_buffer(adev, "CLDB");
-       if (IS_ERR(obj))
-               return PTR_ERR(obj);
-
-       if (obj->buffer.length > sizeof(*cldb)) {
-               acpi_handle_err(adev->handle, "The CLDB buffer is too large\n");
-               ret = -EINVAL;
-               goto out_free_obj;
-       }
-
-       memcpy(cldb, obj->buffer.pointer, obj->buffer.length);
-       ret = 0;
-
-out_free_obj:
-       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");
@@ -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");