linux-kernel - [PATCH 2/4] ARM: sa1100/gpio: use new line value setter callbacks

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Message-Id: <20250407-gpiochip-set-rv-arm-v1-2-9e4a914c7fd4@linaro.org>
Date: Mon, 07 Apr 2025 09:09:19 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Andrew Lunn <andrew@...n.ch>, 
 Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>, 
 Gregory Clement <gregory.clement@...tlin.com>, 
 Russell King <linux@...linux.org.uk>, 
 Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>, Krzysztof Kozlowski <krzk@...nel.org>, 
 Alim Akhtar <alim.akhtar@...sung.com>
Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 linux-gpio@...r.kernel.org, linux-samsung-soc@...r.kernel.org, 
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH 2/4] ARM: sa1100/gpio: use new 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>
---
 arch/arm/common/sa1111.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c
index 9846f30990f7..70dca9937644 100644
--- a/arch/arm/common/sa1111.c
+++ b/arch/arm/common/sa1111.c
@@ -563,7 +563,7 @@ static int sa1111_gpio_get(struct gpio_chip *gc, unsigned offset)
 	return !!(readl_relaxed(reg + SA1111_GPIO_PXDRR) & mask);
 }
 
-static void sa1111_gpio_set(struct gpio_chip *gc, unsigned offset, int value)
+static int sa1111_gpio_set(struct gpio_chip *gc, unsigned int offset, int value)
 {
 	struct sa1111 *sachip = gc_to_sa1111(gc);
 	unsigned long flags;
@@ -574,6 +574,8 @@ static void sa1111_gpio_set(struct gpio_chip *gc, unsigned offset, int value)
 	sa1111_gpio_modify(reg + SA1111_GPIO_PXDWR, mask, value ? mask : 0);
 	sa1111_gpio_modify(reg + SA1111_GPIO_PXSSR, mask, value ? mask : 0);
 	spin_unlock_irqrestore(&sachip->lock, flags);
+
+	return 0;
 }
 
 static void sa1111_gpio_set_multiple(struct gpio_chip *gc, unsigned long *mask,
@@ -613,7 +615,7 @@ static int sa1111_setup_gpios(struct sa1111 *sachip)
 	sachip->gc.direction_input = sa1111_gpio_direction_input;
 	sachip->gc.direction_output = sa1111_gpio_direction_output;
 	sachip->gc.get = sa1111_gpio_get;
-	sachip->gc.set = sa1111_gpio_set;
+	sachip->gc.set_rv = sa1111_gpio_set;
 	sachip->gc.set_multiple = sa1111_gpio_set_multiple;
 	sachip->gc.to_irq = sa1111_gpio_to_irq;
 	sachip->gc.base = -1;

-- 
2.45.2