linux-kernel - [PATCH v3 05/10] gpio: aggregator: refactor the forwarder registration part

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Message-Id: <20250416-aaeon-up-board-pinctrl-support-v3-5-f40776bd06ee@bootlin.com>
Date: Wed, 16 Apr 2025 16:08:13 +0200
From: Thomas Richard <thomas.richard@...tlin.com>
To: Linus Walleij <linus.walleij@...aro.org>, 
 Andy Shevchenko <andriy.shevchenko@...ux.intel.com>, 
 Bartosz Golaszewski <brgl@...ev.pl>, 
 Geert Uytterhoeven <geert+renesas@...der.be>
Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 thomas.petazzoni@...tlin.com, DanieleCleri@...on.eu, GaryWang@...on.com.tw, 
 Thomas Richard <thomas.richard@...tlin.com>
Subject: [PATCH v3 05/10] gpio: aggregator: refactor the forwarder
 registration part

Add a new function gpiochip_fwd_register(), which finalizes the
initialization of the forwarder and registers the corresponding gpiochip.

Signed-off-by: Thomas Richard <thomas.richard@...tlin.com>
---
 drivers/gpio/gpio-aggregator.c | 22 ++++++++++++++++------
 1 file changed, 16 insertions(+), 6 deletions(-)

diff --git a/drivers/gpio/gpio-aggregator.c b/drivers/gpio/gpio-aggregator.c
index 4d6e41e02659..66ea3daafc03 100644
--- a/drivers/gpio/gpio-aggregator.c
+++ b/drivers/gpio/gpio-aggregator.c
@@ -566,6 +566,21 @@ static int gpiochip_fwd_add_gpio_desc(struct gpiochip_fwd *fwd,
 	return 0;
 }
 
+static int gpiochip_fwd_register(struct gpiochip_fwd *fwd)
+{
+	struct gpio_chip *chip = &fwd->chip;
+	int error;
+
+	if (chip->can_sleep)
+		mutex_init(&fwd->mlock);
+	else
+		spin_lock_init(&fwd->slock);
+
+	error = devm_gpiochip_add_data(chip->parent, chip, fwd);
+
+	return error;
+}
+
 /**
  * gpiochip_fwd_create() - Create a new GPIO forwarder
  * @dev: Parent device pointer
@@ -603,18 +618,13 @@ static struct gpiochip_fwd *gpiochip_fwd_create(struct device *dev,
 			return ERR_PTR(error);
 	}
 
-	if (chip->can_sleep)
-		mutex_init(&fwd->mlock);
-	else
-		spin_lock_init(&fwd->slock);
-
 	if (features & FWD_FEATURE_DELAY) {
 		error = gpiochip_fwd_setup_delay_line(dev, chip, fwd);
 		if (error)
 			return ERR_PTR(error);
 	}
 
-	error = devm_gpiochip_add_data(dev, chip, fwd);
+	error = gpiochip_fwd_register(fwd);
 	if (error)
 		return ERR_PTR(error);
 

-- 
2.39.5