Input: tsc2004/5 - use device core to create driver-specific device attributes

Instead of creating driver-specific device attributes with
sysfs_create_group() have device core do this by setting up dev_groups
pointer in the driver structure.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20230729005133.1095051-21-dmitry.torokhov@gmail.comSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/touchscreen/tsc2004.c

@@ -64,6 +64,7 @@ MODULE_DEVICE_TABLE(of, tsc2004_of_match);
 static struct i2c_driver tsc2004_driver = {
 	.driver = {
 		.name		= "tsc2004",
+		.dev_groups	= tsc200x_groups,
 		.of_match_table	= of_match_ptr(tsc2004_of_match),
 		.pm		= pm_sleep_ptr(&tsc200x_pm_ops),
 	},

drivers/input/touchscreen/tsc2005.c

@@ -80,6 +80,7 @@ MODULE_DEVICE_TABLE(of, tsc2005_of_match);
 static struct spi_driver tsc2005_driver = {
 	.driver	= {
 		.name		= "tsc2005",
+		.dev_groups	= tsc200x_groups,
 		.of_match_table	= of_match_ptr(tsc2005_of_match),
 		.pm		= pm_sleep_ptr(&tsc200x_pm_ops),
 	},

drivers/input/touchscreen/tsc200x-core.c

@@ -356,6 +356,12 @@ static const struct attribute_group tsc200x_attr_group = {
 	.attrs		= tsc200x_attrs,
 };
 
+const struct attribute_group *tsc200x_groups[] = {
+	&tsc200x_attr_group,
+	NULL
+};
+EXPORT_SYMBOL_GPL(tsc200x_groups);
+
 static void tsc200x_esd_work(struct work_struct *work)
 {
 	struct tsc200x *ts = container_of(work, struct tsc200x, esd_work.work);
@@ -553,25 +559,17 @@ int tsc200x_probe(struct device *dev, int irq, const struct input_id *tsc_id,
 		return error;
 
 	dev_set_drvdata(dev, ts);
-	error = sysfs_create_group(&dev->kobj, &tsc200x_attr_group);
-	if (error) {
-		dev_err(dev,
-			"Failed to create sysfs attributes, err: %d\n", error);
-		goto disable_regulator;
-	}
 
 	error = input_register_device(ts->idev);
 	if (error) {
 		dev_err(dev,
 			"Failed to register input device, err: %d\n", error);
-		goto err_remove_sysfs;
+		goto disable_regulator;
 	}
 
 	irq_set_irq_wake(irq, 1);
 	return 0;
 
-err_remove_sysfs:
-	sysfs_remove_group(&dev->kobj, &tsc200x_attr_group);
 disable_regulator:
 	regulator_disable(ts->vio);
 	return error;
@@ -582,8 +580,6 @@ void tsc200x_remove(struct device *dev)
 {
 	struct tsc200x *ts = dev_get_drvdata(dev);
 
-	sysfs_remove_group(&dev->kobj, &tsc200x_attr_group);
-
 	regulator_disable(ts->vio);
 }
 EXPORT_SYMBOL_GPL(tsc200x_remove);

drivers/input/touchscreen/tsc200x-core.h

@@ -70,6 +70,7 @@
 
 extern const struct regmap_config tsc200x_regmap_config;
 extern const struct dev_pm_ops tsc200x_pm_ops;
+extern const struct attribute_group *tsc200x_groups[];
 
 int tsc200x_probe(struct device *dev, int irq, const struct input_id *tsc_id,
 		  struct regmap *regmap,