linux-kernel - [PATCH 07/12] gpio: msc313: use new GPIO line value setter callbacks

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Message-Id: <20250610-gpiochip-set-rv-gpio-v1-7-3a9a3c1472ff@linaro.org>
Date: Tue, 10 Jun 2025 14:33:17 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>, 
 Marek Behún <kabel@...nel.org>, 
 Conor Dooley <conor.dooley@...rochip.com>, 
 Daire McNamara <daire.mcnamara@...rochip.com>, 
 Daniel Palmer <daniel@...ngy.jp>, Romain Perier <romain.perier@...il.com>, 
 Avi Fishman <avifishman70@...il.com>, Tomer Maimon <tmaimon77@...il.com>, 
 Tali Perry <tali.perry1@...il.com>, Patrick Venture <venture@...gle.com>, 
 Nancy Yuen <yuenn@...gle.com>, Benjamin Fair <benjaminfair@...gle.com>, 
 Grygorii Strashko <grygorii.strashko@...com>, 
 Santosh Shilimkar <ssantosh@...nel.org>, Kevin Hilman <khilman@...nel.org>
Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-riscv@...ts.infradead.org, linux-arm-kernel@...ts.infradead.org, 
 openbmc@...ts.ozlabs.org, linux-omap@...r.kernel.org, 
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH 07/12] gpio: msc313: 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-msc313.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpio-msc313.c b/drivers/gpio/gpio-msc313.c
index 6db9e469e0dc254e791d497b89a4c6d329d0add4..992339a89d19840fc03ccf849972a83cb86415ae 100644
--- a/drivers/gpio/gpio-msc313.c
+++ b/drivers/gpio/gpio-msc313.c
@@ -486,7 +486,7 @@ struct msc313_gpio {
 	u8 *saved;
 };
 
-static void msc313_gpio_set(struct gpio_chip *chip, unsigned int offset, int value)
+static int msc313_gpio_set(struct gpio_chip *chip, unsigned int offset, int value)
 {
 	struct msc313_gpio *gpio = gpiochip_get_data(chip);
 	u8 gpioreg = readb_relaxed(gpio->base + gpio->gpio_data->offsets[offset]);
@@ -497,6 +497,8 @@ static void msc313_gpio_set(struct gpio_chip *chip, unsigned int offset, int val
 		gpioreg &= ~MSC313_GPIO_OUT;
 
 	writeb_relaxed(gpioreg, gpio->base + gpio->gpio_data->offsets[offset]);
+
+	return 0;
 }
 
 static int msc313_gpio_get(struct gpio_chip *chip, unsigned int offset)
@@ -656,7 +658,7 @@ static int msc313_gpio_probe(struct platform_device *pdev)
 	gpiochip->direction_input = msc313_gpio_direction_input;
 	gpiochip->direction_output = msc313_gpio_direction_output;
 	gpiochip->get = msc313_gpio_get;
-	gpiochip->set = msc313_gpio_set;
+	gpiochip->set_rv = msc313_gpio_set;
 	gpiochip->base = -1;
 	gpiochip->ngpio = gpio->gpio_data->num;
 	gpiochip->names = gpio->gpio_data->names;

-- 
2.48.1