linux-kernel - [PATCH 16/16] pinctrl: amdisp: use new GPIO line value setter callbacks

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Message-Id: <20250612-gpiochip-set-rv-pinctrl-remaining-v1-16-556b0a530cd4@linaro.org>
Date: Thu, 12 Jun 2025 15:15:25 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Dvorkin Dmitry <dvorkin@...bo.com>, Wells Lu <wellslutw@...il.com>, 
 Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>, 
 Patrice Chotard <patrice.chotard@...s.st.com>, 
 Support Opensource <support.opensource@...semi.com>, 
 Baruch Siach <baruch@...s.co.il>, Sven Peter <sven@...nel.org>, 
 Janne Grunau <j@...nau.net>, Alyssa Rosenzweig <alyssa@...enzweig.io>, 
 Neal Gompa <neal@...pa.dev>, Viresh Kumar <vireshk@...nel.org>, 
 Lakshmi Sowjanya D <lakshmi.sowjanya.d@...el.com>, 
 Chen-Yu Tsai <wens@...e.org>, Jernej Skrabec <jernej.skrabec@...il.com>, 
 Samuel Holland <samuel@...lland.org>
Cc: linux-arm-kernel@...ts.infradead.org, linux-gpio@...r.kernel.org, 
 linux-kernel@...r.kernel.org, asahi@...ts.linux.dev, soc@...ts.linux.dev, 
 linux-sunxi@...ts.linux.dev, 
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH 16/16] pinctrl: amdisp: 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/pinctrl/pinctrl-amdisp.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-amdisp.c b/drivers/pinctrl/pinctrl-amdisp.c
index 9256ed67bb20e9eefef6c6574f1b60d71814cdc0..2e706bf8bcde0536b9e09614665d46130e12c406 100644
--- a/drivers/pinctrl/pinctrl-amdisp.c
+++ b/drivers/pinctrl/pinctrl-amdisp.c
@@ -117,7 +117,7 @@ static int amdisp_gpio_get(struct gpio_chip *gc, unsigned int gpio)
 	return !!(pin_reg & BIT(GPIO_CONTROL_PIN));
 }
 
-static void amdisp_gpio_set(struct gpio_chip *gc, unsigned int gpio, int value)
+static int amdisp_gpio_set(struct gpio_chip *gc, unsigned int gpio, int value)
 {
 	unsigned long flags;
 	u32 pin_reg;
@@ -131,6 +131,8 @@ static void amdisp_gpio_set(struct gpio_chip *gc, unsigned int gpio, int value)
 		pin_reg &= ~BIT(GPIO_CONTROL_PIN);
 	writel(pin_reg, pctrl->gpiobase + gpio_offset[gpio]);
 	raw_spin_unlock_irqrestore(&pctrl->lock, flags);
+
+	return 0;
 }
 
 static int amdisp_gpiochip_add(struct platform_device *pdev,
@@ -149,7 +151,7 @@ static int amdisp_gpiochip_add(struct platform_device *pdev,
 	gc->direction_input	= amdisp_gpio_direction_input;
 	gc->direction_output	= amdisp_gpio_direction_output;
 	gc->get			= amdisp_gpio_get;
-	gc->set			= amdisp_gpio_set;
+	gc->set_rv		= amdisp_gpio_set;
 	gc->base		= -1;
 	gc->ngpio		= ARRAY_SIZE(amdisp_range_pins);
 

-- 
2.48.1