linux-kernel - [PATCH 07/12] gpio: tpic2810: use new GPIO line value setter callbacks

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Message-Id: <20250702-gpiochip-set-rv-gpio-round3-v1-7-0d23be74f71d@linaro.org>
Date: Wed, 02 Jul 2025 11:14:08 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>, 
 Thierry Reding <thierry.reding@...il.com>, 
 Jonathan Hunter <jonathanh@...dia.com>, Robert Richter <rric@...nel.org>, 
 Aaro Koskinen <aaro.koskinen@....fi>, 
 Andreas Kemnade <andreas@...nade.info>, Kevin Hilman <khilman@...libre.com>, 
 Roger Quadros <rogerq@...nel.org>, Tony Lindgren <tony@...mide.com>
Cc: linux-gpio@...r.kernel.org, linux-tegra@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org, 
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH 07/12] gpio: tpic2810: use new GPIO 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-tpic2810.c | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/drivers/gpio/gpio-tpic2810.c b/drivers/gpio/gpio-tpic2810.c
index e99725bd3d63d47ed6dbb800aacac14b1ee96b9c..d5b8568ab0613be56965448277704336fd520090 100644
--- a/drivers/gpio/gpio-tpic2810.c
+++ b/drivers/gpio/gpio-tpic2810.c
@@ -25,7 +25,7 @@ struct tpic2810 {
 	struct mutex lock;
 };
 
-static void tpic2810_set(struct gpio_chip *chip, unsigned offset, int value);
+static int tpic2810_set(struct gpio_chip *chip, unsigned int offset, int value);
 
 static int tpic2810_get_direction(struct gpio_chip *chip,
 				  unsigned offset)
@@ -38,8 +38,7 @@ static int tpic2810_direction_output(struct gpio_chip *chip,
 				     unsigned offset, int value)
 {
 	/* This device always output */
-	tpic2810_set(chip, offset, value);
-	return 0;
+	return tpic2810_set(chip, offset, value);
 }
 
 static void tpic2810_set_mask_bits(struct gpio_chip *chip, u8 mask, u8 bits)
@@ -61,15 +60,19 @@ static void tpic2810_set_mask_bits(struct gpio_chip *chip, u8 mask, u8 bits)
 	mutex_unlock(&gpio->lock);
 }
 
-static void tpic2810_set(struct gpio_chip *chip, unsigned offset, int value)
+static int tpic2810_set(struct gpio_chip *chip, unsigned int offset, int value)
 {
 	tpic2810_set_mask_bits(chip, BIT(offset), value ? BIT(offset) : 0);
+
+	return 0;
 }
 
-static void tpic2810_set_multiple(struct gpio_chip *chip, unsigned long *mask,
-				  unsigned long *bits)
+static int tpic2810_set_multiple(struct gpio_chip *chip, unsigned long *mask,
+				 unsigned long *bits)
 {
 	tpic2810_set_mask_bits(chip, *mask, *bits);
+
+	return 0;
 }
 
 static const struct gpio_chip template_chip = {
@@ -77,8 +80,8 @@ static const struct gpio_chip template_chip = {
 	.owner			= THIS_MODULE,
 	.get_direction		= tpic2810_get_direction,
 	.direction_output	= tpic2810_direction_output,
-	.set			= tpic2810_set,
-	.set_multiple		= tpic2810_set_multiple,
+	.set_rv			= tpic2810_set,
+	.set_multiple_rv	= tpic2810_set_multiple,
 	.base			= -1,
 	.ngpio			= 8,
 	.can_sleep		= true,

-- 
2.48.1