linux-kernel - [PATCH 18/19] gpio: zynqmp-modepin: use new GPIO line value setter callbacks

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Message-Id: <20250709-gpiochip-set-rv-gpio-remaining-v1-18-b8950f69618d@linaro.org>
Date: Wed, 09 Jul 2025 08:41:55 +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 18/19] gpio: zynqmp-modepin: 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-zynqmp-modepin.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/gpio/gpio-zynqmp-modepin.c b/drivers/gpio/gpio-zynqmp-modepin.c
index 2f3c9ebfa78d1d6bc4624a614c316e4fbeae2aff..36a547d6fc5a5c100f81c72600e14d620a462cc5 100644
--- a/drivers/gpio/gpio-zynqmp-modepin.c
+++ b/drivers/gpio/gpio-zynqmp-modepin.c
@@ -57,8 +57,8 @@ static int modepin_gpio_get_value(struct gpio_chip *chip, unsigned int pin)
  *
  * Return:	None.
  */
-static void modepin_gpio_set_value(struct gpio_chip *chip, unsigned int pin,
-				   int state)
+static int modepin_gpio_set_value(struct gpio_chip *chip, unsigned int pin,
+				  int state)
 {
 	u32 bootpin_val = 0;
 	int ret;
@@ -77,6 +77,8 @@ static void modepin_gpio_set_value(struct gpio_chip *chip, unsigned int pin,
 	ret = zynqmp_pm_bootmode_write(bootpin_val);
 	if (ret)
 		pr_err("modepin: set value error %d for pin %d\n", ret, pin);
+
+	return ret;
 }
 
 /**
@@ -128,7 +130,7 @@ static int modepin_gpio_probe(struct platform_device *pdev)
 	chip->owner = THIS_MODULE;
 	chip->parent = &pdev->dev;
 	chip->get = modepin_gpio_get_value;
-	chip->set = modepin_gpio_set_value;
+	chip->set_rv = modepin_gpio_set_value;
 	chip->direction_input = modepin_gpio_dir_in;
 	chip->direction_output = modepin_gpio_dir_out;
 	chip->label = dev_name(&pdev->dev);

-- 
2.48.1