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

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Message-Id: <20250610-gpiochip-set-rv-gpio-v1-12-3a9a3c1472ff@linaro.org>
Date: Tue, 10 Jun 2025 14:33:22 +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 12/12] gpio: palmas: 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-palmas.c | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/drivers/gpio/gpio-palmas.c b/drivers/gpio/gpio-palmas.c
index 28dba7048509a3ef9c7972c1be53ea30adddabb0..a076daee00658a9e423a0d78f14ad48d61956d7a 100644
--- a/drivers/gpio/gpio-palmas.c
+++ b/drivers/gpio/gpio-palmas.c
@@ -54,12 +54,11 @@ static int palmas_gpio_get(struct gpio_chip *gc, unsigned offset)
 	return !!(val & BIT(offset));
 }
 
-static void palmas_gpio_set(struct gpio_chip *gc, unsigned offset,
-			int value)
+static int palmas_gpio_set(struct gpio_chip *gc, unsigned int offset,
+			   int value)
 {
 	struct palmas_gpio *pg = gpiochip_get_data(gc);
 	struct palmas *palmas = pg->palmas;
-	int ret;
 	unsigned int reg;
 	int gpio16 = (offset/8);
 
@@ -71,9 +70,7 @@ static void palmas_gpio_set(struct gpio_chip *gc, unsigned offset,
 		reg = (value) ?
 			PALMAS_GPIO_SET_DATA_OUT : PALMAS_GPIO_CLEAR_DATA_OUT;
 
-	ret = palmas_write(palmas, PALMAS_GPIO_BASE, reg, BIT(offset));
-	if (ret < 0)
-		dev_err(gc->parent, "Reg 0x%02x write failed, %d\n", reg, ret);
+	return palmas_write(palmas, PALMAS_GPIO_BASE, reg, BIT(offset));
 }
 
 static int palmas_gpio_output(struct gpio_chip *gc, unsigned offset,
@@ -89,7 +86,9 @@ static int palmas_gpio_output(struct gpio_chip *gc, unsigned offset,
 	reg = (gpio16) ? PALMAS_GPIO_DATA_DIR2 : PALMAS_GPIO_DATA_DIR;
 
 	/* Set the initial value */
-	palmas_gpio_set(gc, offset, value);
+	ret = palmas_gpio_set(gc, offset, value);
+	if (ret)
+		return ret;
 
 	ret = palmas_update_bits(palmas, PALMAS_GPIO_BASE, reg,
 				BIT(offset), BIT(offset));
@@ -166,7 +165,7 @@ static int palmas_gpio_probe(struct platform_device *pdev)
 	palmas_gpio->gpio_chip.direction_input = palmas_gpio_input;
 	palmas_gpio->gpio_chip.direction_output = palmas_gpio_output;
 	palmas_gpio->gpio_chip.to_irq = palmas_gpio_to_irq;
-	palmas_gpio->gpio_chip.set	= palmas_gpio_set;
+	palmas_gpio->gpio_chip.set_rv	= palmas_gpio_set;
 	palmas_gpio->gpio_chip.get	= palmas_gpio_get;
 	palmas_gpio->gpio_chip.parent = &pdev->dev;
 

-- 
2.48.1