linux-kernel - [PATCH v2 1/2] gpiolib-of: Make of_gpio_get_count() take firmware node as a parameter

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Message-ID: <20240229145303.3801332-2-andriy.shevchenko@linux.intel.com>
Date: Thu, 29 Feb 2024 16:51:38 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
	linux-gpio@...r.kernel.org,
	linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Bartosz Golaszewski <brgl@...ev.pl>,
	Chris Packham <Chris.Packham@...iedtelesis.co.nz>
Subject: [PATCH v2 1/2] gpiolib-of: Make of_gpio_get_count() take firmware node as a parameter

Make of_gpio_get_count() take firmware node as a parameter in order
to be aligned with other functions and decouple from unused device
pointer. The latter helps to create a common fwnode_gpio_count()
in the future.

While at it, rename to be of_gpio_count() to be aligned with the others.

Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/gpio/gpiolib-of.c | 13 ++++++-------
 drivers/gpio/gpiolib-of.h |  5 +++--
 drivers/gpio/gpiolib.c    |  2 +-
 3 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
index e35a9c7da4ee..c0eae8924074 100644
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c
@@ -68,7 +68,7 @@ static int of_gpio_named_count(const struct device_node *np,
 
 /**
  * of_gpio_spi_cs_get_count() - special GPIO counting for SPI
- * @dev:    Consuming device
+ * @np:    Consuming device node
  * @con_id: Function within the GPIO consumer
  *
  * Some elder GPIO controllers need special quirks. Currently we handle
@@ -78,10 +78,8 @@ static int of_gpio_named_count(const struct device_node *np,
  * the counting of "cs-gpios" to count "gpios" transparent to the
  * driver.
  */
-static int of_gpio_spi_cs_get_count(struct device *dev, const char *con_id)
+static int of_gpio_spi_cs_get_count(const struct device_node *np, const char *con_id)
 {
-	struct device_node *np = dev->of_node;
-
 	if (!IS_ENABLED(CONFIG_SPI_MASTER))
 		return 0;
 	if (!con_id || strcmp(con_id, "cs"))
@@ -93,13 +91,14 @@ static int of_gpio_spi_cs_get_count(struct device *dev, const char *con_id)
 	return of_gpio_named_count(np, "gpios");
 }
 
-int of_gpio_get_count(struct device *dev, const char *con_id)
+int of_gpio_count(const struct fwnode_handle *fwnode, const char *con_id)
 {
+	const struct device_node *np = to_of_node(fwnode);
 	int ret;
 	char propname[32];
 	unsigned int i;
 
-	ret = of_gpio_spi_cs_get_count(dev, con_id);
+	ret = of_gpio_spi_cs_get_count(np, con_id);
 	if (ret > 0)
 		return ret;
 
@@ -111,7 +110,7 @@ int of_gpio_get_count(struct device *dev, const char *con_id)
 			snprintf(propname, sizeof(propname), "%s",
 				 gpio_suffixes[i]);
 
-		ret = of_gpio_named_count(dev->of_node, propname);
+		ret = of_gpio_named_count(np, propname);
 		if (ret > 0)
 			break;
 	}
diff --git a/drivers/gpio/gpiolib-of.h b/drivers/gpio/gpiolib-of.h
index 6b3a5347c5d9..19988c1354fa 100644
--- a/drivers/gpio/gpiolib-of.h
+++ b/drivers/gpio/gpiolib-of.h
@@ -9,6 +9,7 @@
 #include <linux/notifier.h>
 
 struct device;
+struct fwnode_handle;
 
 struct gpio_chip;
 struct gpio_desc;
@@ -21,7 +22,7 @@ struct gpio_desc *of_find_gpio(struct device_node *np,
 			       unsigned long *lookupflags);
 int of_gpiochip_add(struct gpio_chip *gc);
 void of_gpiochip_remove(struct gpio_chip *gc);
-int of_gpio_get_count(struct device *dev, const char *con_id);
+int of_gpio_count(const struct fwnode_handle *fwnode, const char *con_id);
 #else
 static inline struct gpio_desc *of_find_gpio(struct device_node *np,
 					     const char *con_id,
@@ -32,7 +33,7 @@ static inline struct gpio_desc *of_find_gpio(struct device_node *np,
 }
 static inline int of_gpiochip_add(struct gpio_chip *gc) { return 0; }
 static inline void of_gpiochip_remove(struct gpio_chip *gc) { }
-static inline int of_gpio_get_count(struct device *dev, const char *con_id)
+static inline int of_gpio_count(const struct fwnode_handle *fwnode, const char *con_id)
 {
 	return 0;
 }
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 5fa3bf7b55bd..a93271b3d538 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -4285,7 +4285,7 @@ int gpiod_count(struct device *dev, const char *con_id)
 	int count = -ENOENT;
 
 	if (is_of_node(fwnode))
-		count = of_gpio_get_count(dev, con_id);
+		count = of_gpio_count(fwnode, con_id);
 	else if (is_acpi_node(fwnode))
 		count = acpi_gpio_count(dev, con_id);
 	else if (is_software_node(fwnode))
-- 
2.43.0.rc1.1.gbec44491f096