linux-kernel - [PATCH 06/22] Input: ad7879 - use device core to create driver-specific device attributes

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Date:   Fri, 28 Jul 2023 17:51:15 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     linux-input@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Michael Hennerich <michael.hennerich@...log.com>
Subject: [PATCH 06/22] Input: ad7879 - use device core to create driver-specific device attributes

Instead of creating driver-specific device attributes with
devm_device_add_group() have device core do this by setting up dev_groups
pointer in the driver structure.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---
 drivers/input/touchscreen/ad7879-i2c.c |  7 ++++---
 drivers/input/touchscreen/ad7879-spi.c |  7 ++++---
 drivers/input/touchscreen/ad7879.c     | 10 ++++++----
 drivers/input/touchscreen/ad7879.h     |  3 +++
 4 files changed, 17 insertions(+), 10 deletions(-)

diff --git a/drivers/input/touchscreen/ad7879-i2c.c b/drivers/input/touchscreen/ad7879-i2c.c
index feaa6f8b01ed..5c094ab74698 100644
--- a/drivers/input/touchscreen/ad7879-i2c.c
+++ b/drivers/input/touchscreen/ad7879-i2c.c
@@ -58,9 +58,10 @@ MODULE_DEVICE_TABLE(of, ad7879_i2c_dt_ids);
 
 static struct i2c_driver ad7879_i2c_driver = {
 	.driver = {
-		.name	= "ad7879",
-		.pm	= &ad7879_pm_ops,
-		.of_match_table = of_match_ptr(ad7879_i2c_dt_ids),
+		.name		= "ad7879",
+		.dev_groups	= ad7879_groups,
+		.pm		= &ad7879_pm_ops,
+		.of_match_table	= of_match_ptr(ad7879_i2c_dt_ids),
 	},
 	.probe		= ad7879_i2c_probe,
 	.id_table	= ad7879_id,
diff --git a/drivers/input/touchscreen/ad7879-spi.c b/drivers/input/touchscreen/ad7879-spi.c
index 50e889846800..064968fe57cf 100644
--- a/drivers/input/touchscreen/ad7879-spi.c
+++ b/drivers/input/touchscreen/ad7879-spi.c
@@ -56,9 +56,10 @@ MODULE_DEVICE_TABLE(of, ad7879_spi_dt_ids);
 
 static struct spi_driver ad7879_spi_driver = {
 	.driver = {
-		.name	= "ad7879",
-		.pm	= &ad7879_pm_ops,
-		.of_match_table = of_match_ptr(ad7879_spi_dt_ids),
+		.name		= "ad7879",
+		.dev_groups	= ad7879_groups,
+		.pm		= &ad7879_pm_ops,
+		.of_match_table	= of_match_ptr(ad7879_spi_dt_ids),
 	},
 	.probe		= ad7879_spi_probe,
 };
diff --git a/drivers/input/touchscreen/ad7879.c b/drivers/input/touchscreen/ad7879.c
index e850853328f1..e5d69bf2276e 100644
--- a/drivers/input/touchscreen/ad7879.c
+++ b/drivers/input/touchscreen/ad7879.c
@@ -391,6 +391,12 @@ static const struct attribute_group ad7879_attr_group = {
 	.attrs = ad7879_attributes,
 };
 
+const struct attribute_group *ad7879_groups[] = {
+	&ad7879_attr_group,
+	NULL
+};
+EXPORT_SYMBOL_GPL(ad7879_groups);
+
 #ifdef CONFIG_GPIOLIB
 static int ad7879_gpio_direction_input(struct gpio_chip *chip,
 					unsigned gpio)
@@ -612,10 +618,6 @@ int ad7879_probe(struct device *dev, struct regmap *regmap,
 
 	__ad7879_disable(ts);
 
-	err = devm_device_add_group(dev, &ad7879_attr_group);
-	if (err)
-		return err;
-
 	err = ad7879_gpio_add(ts);
 	if (err)
 		return err;
diff --git a/drivers/input/touchscreen/ad7879.h b/drivers/input/touchscreen/ad7879.h
index ae8aa1428e56..d71a8e787290 100644
--- a/drivers/input/touchscreen/ad7879.h
+++ b/drivers/input/touchscreen/ad7879.h
@@ -8,11 +8,14 @@
 #ifndef _AD7879_H_
 #define _AD7879_H_
 
+#include <linux/pm.h>
 #include <linux/types.h>
 
+struct attribute_group;
 struct device;
 struct regmap;
 
+extern const struct attribute_group *ad7879_groups[];
 extern const struct dev_pm_ops ad7879_pm_ops;
 
 int ad7879_probe(struct device *dev, struct regmap *regmap,
-- 
2.41.0.487.g6d72f3e995-goog