linux-kernel - [PATCH 17/19] gpio: zynq: use new GPIO line value setter callbacks

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Message-Id: <20250709-gpiochip-set-rv-gpio-remaining-v1-17-b8950f69618d@linaro.org>
Date: Wed, 09 Jul 2025 08:41:54 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>, 
 Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>, 
 Andy Shevchenko <andy@...nel.org>, 
 Shubhrajyoti Datta <shubhrajyoti.datta@....com>, 
 Srinivas Neeli <srinivas.neeli@....com>, 
 Michal Simek <michal.simek@....com>, Nandor Han <nandor.han@...com>
Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 patches@...nsource.cirrus.com, linux-arm-kernel@...ts.infradead.org, 
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH 17/19] gpio: zynq: 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-zynq.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/gpio/gpio-zynq.c b/drivers/gpio/gpio-zynq.c
index 3dae63f3ea217780818ccb991ccba13ab18775db..b22b4e25c68dc19388dc2eb63504279e548c73b7 100644
--- a/drivers/gpio/gpio-zynq.c
+++ b/drivers/gpio/gpio-zynq.c
@@ -265,8 +265,8 @@ static int zynq_gpio_get_value(struct gpio_chip *chip, unsigned int pin)
  * upper 16 bits) based on the given pin number and sets the state of a
  * gpio pin to the specified value. The state is either 0 or non-zero.
  */
-static void zynq_gpio_set_value(struct gpio_chip *chip, unsigned int pin,
-				int state)
+static int zynq_gpio_set_value(struct gpio_chip *chip, unsigned int pin,
+			       int state)
 {
 	unsigned int reg_offset, bank_num, bank_pin_num;
 	struct zynq_gpio *gpio = gpiochip_get_data(chip);
@@ -290,6 +290,8 @@ static void zynq_gpio_set_value(struct gpio_chip *chip, unsigned int pin,
 		((state << bank_pin_num) | ZYNQ_GPIO_UPPER_MASK);
 
 	writel_relaxed(state, gpio->base_addr + reg_offset);
+
+	return 0;
 }
 
 /**
@@ -930,7 +932,7 @@ static int zynq_gpio_probe(struct platform_device *pdev)
 	chip->owner = THIS_MODULE;
 	chip->parent = &pdev->dev;
 	chip->get = zynq_gpio_get_value;
-	chip->set = zynq_gpio_set_value;
+	chip->set_rv = zynq_gpio_set_value;
 	chip->request = zynq_gpio_request;
 	chip->free = zynq_gpio_free;
 	chip->direction_input = zynq_gpio_dir_in;

-- 
2.48.1