[PATCH 08/12] platform/x86: int3472: Split into 2 drivers

Hans de Goede
2021-10-08T16:25:35Z

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.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
Note git rename detection is failing for the new common.c but this is
just the old intel_skl_int3472_common.c with the driver registering
bits removed.
---
drivers/platform/x86/intel/int3472/Makefile | 9 +-
...lk_and_regulator.c => clk_and_regulator.c} | 2 +-
drivers/platform/x86/intel/int3472/common.c | 54 +++++++++
.../{intel_skl_int3472_common.h => common.h} | 3 -
...ntel_skl_int3472_discrete.c => discrete.c} | 28 ++++-
.../intel/int3472/intel_skl_int3472_common.c | 106 ------------------
...ntel_skl_int3472_tps68470.c => tps68470.c} | 23 +++-
7 files changed, 105 insertions(+), 120 deletions(-)
rename drivers/platform/x86/intel/int3472/{intel_skl_int3472_clk_and_regulator.c => clk_and_regulator.c} (99%)
create mode 100644 drivers/platform/x86/intel/int3472/common.c
rename drivers/platform/x86/intel/int3472/{intel_skl_int3472_common.h => common.h} (94%)
rename drivers/platform/x86/intel/int3472/{intel_skl_int3472_discrete.c => discrete.c} (93%)
delete mode 100644 drivers/platform/x86/intel/int3472/intel_skl_int3472_common.c
rename drivers/platform/x86/intel/int3472/{intel_skl_int3472_tps68470.c => tps68470.c} (86%)

diff --git a/drivers/platform/x86/intel/int3472/Makefile b/drivers/platform/x86/intel/int3472/Makefile
index 2362e04db18d..771e720528a0 100644
--- a/drivers/platform/x86/intel/int3472/Makefile
+++ b/drivers/platform/x86/intel/int3472/Makefile
@@ -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
diff --git a/drivers/platform/x86/intel/int3472/intel_skl_int3472_clk_and_regulator.c b/drivers/platform/x86/intel/int3472/clk_and_regulator.c
similarity index 99%
rename from drivers/platform/x86/intel/int3472/intel_skl_int3472_clk_and_regulator.c
rename to drivers/platform/x86/intel/int3472/clk_and_regulator.c
index 1700e7557a82..1cf958983e86 100644
--- a/drivers/platform/x86/intel/int3472/intel_skl_int3472_clk_and_regulator.c
+++ b/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
diff --git a/drivers/platform/x86/intel/int3472/common.c b/drivers/platform/x86/intel/int3472/common.c
new file mode 100644
index 000000000000..350655a9515b
--- /dev/null
+++ b/drivers/platform/x86/intel/int3472/common.c
@@ -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;
+}
diff --git a/drivers/platform/x86/intel/int3472/intel_skl_int3472_common.h b/drivers/platform/x86/intel/int3472/common.h
similarity index 94%
rename from drivers/platform/x86/intel/int3472/intel_skl_int3472_common.h
rename to drivers/platform/x86/intel/int3472/common.h
index 714fde73b524..d14944ee8586 100644
--- a/drivers/platform/x86/intel/int3472/intel_skl_int3472_common.h
+++ b/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);
diff --git a/drivers/platform/x86/intel/int3472/intel_skl_int3472_discrete.c b/drivers/platform/x86/intel/int3472/discrete.c
similarity index 93%
rename from drivers/platform/x86/intel/int3472/intel_skl_int3472_discrete.c
rename to drivers/platform/x86/intel/int3472/discrete.c
index 9fe0a2527e1c..d62d81cde6ef 100644
--- a/drivers/platform/x86/intel/int3472/intel_skl_int3472_discrete.c
+++ b/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");
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
index 497e74fba75f..000000000000
--- a/drivers/platform/x86/intel/int3472/intel_skl_int3472_common.c
+++ /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");
diff --git a/drivers/platform/x86/intel/int3472/intel_skl_int3472_tps68470.c b/drivers/platform/x86/intel/int3472/tps68470.c
similarity index 86%
rename from drivers/platform/x86/intel/int3472/intel_skl_int3472_tps68470.c
rename to drivers/platform/x86/intel/int3472/tps68470.c
index 42e688f4cad4..e95b0f50b384 100644
--- a/drivers/platform/x86/intel/int3472/intel_skl_int3472_tps68470.c
+++ b/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
@@ -102,7 +102,7 @@ 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;
@@ -142,3 +142,22 @@ 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");
--
2.31.1