linux-kernel - [PATCH 06/12] gpio: f7188: use new line value setter callbacks

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Message-Id: <20250407-gpiochip-set-rv-gpio-part1-v1-6-78399683ca38@linaro.org>
Date: Mon, 07 Apr 2025 09:13:15 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>, Orson Zhai <orsonzhai@...il.com>, 
 Baolin Wang <baolin.wang@...ux.alibaba.com>, 
 Chunyan Zhang <zhang.lyra@...il.com>, Andy Shevchenko <andy@...nel.org>, 
 Peter Tyser <ptyser@...-inc.com>
Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH 06/12] gpio: f7188: use new line value setter callbacks

From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>

struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
---
 drivers/gpio/gpio-f7188x.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/gpio/gpio-f7188x.c b/drivers/gpio/gpio-f7188x.c
index 3875fd940ccb..dfcd3634f279 100644
--- a/drivers/gpio/gpio-f7188x.c
+++ b/drivers/gpio/gpio-f7188x.c
@@ -159,7 +159,8 @@ static int f7188x_gpio_direction_in(struct gpio_chip *chip, unsigned offset);
 static int f7188x_gpio_get(struct gpio_chip *chip, unsigned offset);
 static int f7188x_gpio_direction_out(struct gpio_chip *chip,
 				     unsigned offset, int value);
-static void f7188x_gpio_set(struct gpio_chip *chip, unsigned offset, int value);
+static int f7188x_gpio_set(struct gpio_chip *chip, unsigned int offset,
+			   int value);
 static int f7188x_gpio_set_config(struct gpio_chip *chip, unsigned offset,
 				  unsigned long config);
 
@@ -172,7 +173,7 @@ static int f7188x_gpio_set_config(struct gpio_chip *chip, unsigned offset,
 			.direction_input  = f7188x_gpio_direction_in,	\
 			.get              = f7188x_gpio_get,		\
 			.direction_output = f7188x_gpio_direction_out,	\
-			.set              = f7188x_gpio_set,		\
+			.set_rv           = f7188x_gpio_set,		\
 			.set_config	  = f7188x_gpio_set_config,	\
 			.base             = -1,				\
 			.ngpio            = _ngpio,			\
@@ -391,7 +392,8 @@ static int f7188x_gpio_direction_out(struct gpio_chip *chip,
 	return 0;
 }
 
-static void f7188x_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+static int f7188x_gpio_set(struct gpio_chip *chip, unsigned int offset,
+			   int value)
 {
 	int err;
 	struct f7188x_gpio_bank *bank = gpiochip_get_data(chip);
@@ -400,7 +402,8 @@ static void f7188x_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
 
 	err = superio_enter(sio->addr);
 	if (err)
-		return;
+		return err;
+
 	superio_select(sio->addr, sio->device);
 
 	data_out = superio_inb(sio->addr, f7188x_gpio_data_out(bank->regbase));
@@ -411,6 +414,8 @@ static void f7188x_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
 	superio_outb(sio->addr, f7188x_gpio_data_out(bank->regbase), data_out);
 
 	superio_exit(sio->addr);
+
+	return 0;
 }
 
 static int f7188x_gpio_set_config(struct gpio_chip *chip, unsigned offset,

-- 
2.45.2