linux-kernel - [PATCH 02/12] pinctrl: axp209: use new GPIO line value setter callbacks

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Message-Id: <20250424-gpiochip-set-rv-pinctrl-part2-v1-2-504f91120b99@linaro.org>
Date: Thu, 24 Apr 2025 10:35:25 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Basavaraj Natikar <Basavaraj.Natikar@....com>, 
 Shyam Sundar S K <Shyam-sundar.S-k@....com>, 
 Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>, Chen-Yu Tsai <wens@...e.org>, 
 Maxime Coquelin <mcoquelin.stm32@...il.com>, 
 Alexandre Torgue <alexandre.torgue@...s.st.com>, 
 Andreas Färber <afaerber@...e.de>, 
 Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>, 
 Paul Cercueil <paul@...pouillou.net>, 
 Steen Hegelund <Steen.Hegelund@...rochip.com>, 
 Daniel Machon <daniel.machon@...rochip.com>, UNGLinuxDriver@...rochip.com, 
 Ludovic Desroches <ludovic.desroches@...rochip.com>, 
 Nicolas Ferre <nicolas.ferre@...rochip.com>, 
 Alexandre Belloni <alexandre.belloni@...tlin.com>, 
 Claudiu Beznea <claudiu.beznea@...on.dev>, Andrew Lunn <andrew@...n.ch>, 
 Gregory Clement <gregory.clement@...tlin.com>, 
 Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>, 
 Krzysztof Kozlowski <krzk@...nel.org>, 
 Sylwester Nawrocki <s.nawrocki@...sung.com>, 
 Alim Akhtar <alim.akhtar@...sung.com>
Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-stm32@...md-mailman.stormreply.com, 
 linux-arm-kernel@...ts.infradead.org, linux-actions@...ts.infradead.org, 
 linux-mips@...r.kernel.org, linux-samsung-soc@...r.kernel.org, 
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH 02/12] pinctrl: axp209: 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-axp209.c | 29 +++++++++++++----------------
 1 file changed, 13 insertions(+), 16 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-axp209.c b/drivers/pinctrl/pinctrl-axp209.c
index 2b4805e74eed..28ff846d263a 100644
--- a/drivers/pinctrl/pinctrl-axp209.c
+++ b/drivers/pinctrl/pinctrl-axp209.c
@@ -192,34 +192,31 @@ static int axp20x_gpio_get_direction(struct gpio_chip *chip,
 static int axp20x_gpio_output(struct gpio_chip *chip, unsigned int offset,
 			      int value)
 {
-	chip->set(chip, offset, value);
-
-	return 0;
+	return chip->set_rv(chip, offset, value);
 }
 
-static void axp20x_gpio_set(struct gpio_chip *chip, unsigned int offset,
-			    int value)
+static int axp20x_gpio_set(struct gpio_chip *chip, unsigned int offset,
+			   int value)
 {
 	struct axp20x_pctl *pctl = gpiochip_get_data(chip);
 	int reg;
 
 	/* AXP209 has GPIO3 status sharing the settings register */
 	if (offset == 3) {
-		regmap_update_bits(pctl->regmap, AXP20X_GPIO3_CTRL,
-				   AXP20X_GPIO3_FUNCTIONS,
-				   value ? AXP20X_GPIO3_FUNCTION_OUT_HIGH :
-				   AXP20X_GPIO3_FUNCTION_OUT_LOW);
-		return;
+		return regmap_update_bits(pctl->regmap, AXP20X_GPIO3_CTRL,
+					  AXP20X_GPIO3_FUNCTIONS,
+					  value ?
+						AXP20X_GPIO3_FUNCTION_OUT_HIGH :
+						AXP20X_GPIO3_FUNCTION_OUT_LOW);
 	}
 
 	reg = axp20x_gpio_get_reg(offset);
 	if (reg < 0)
-		return;
+		return reg;
 
-	regmap_update_bits(pctl->regmap, reg,
-			   AXP20X_GPIO_FUNCTIONS,
-			   value ? AXP20X_GPIO_FUNCTION_OUT_HIGH :
-			   AXP20X_GPIO_FUNCTION_OUT_LOW);
+	return regmap_update_bits(pctl->regmap, reg, AXP20X_GPIO_FUNCTIONS,
+				  value ? AXP20X_GPIO_FUNCTION_OUT_HIGH :
+					  AXP20X_GPIO_FUNCTION_OUT_LOW);
 }
 
 static int axp20x_pmx_set(struct pinctrl_dev *pctldev, unsigned int offset,
@@ -468,7 +465,7 @@ static int axp20x_pctl_probe(struct platform_device *pdev)
 	pctl->chip.owner		= THIS_MODULE;
 	pctl->chip.get			= axp20x_gpio_get;
 	pctl->chip.get_direction	= axp20x_gpio_get_direction;
-	pctl->chip.set			= axp20x_gpio_set;
+	pctl->chip.set_rv		= axp20x_gpio_set;
 	pctl->chip.direction_input	= pinctrl_gpio_direction_input;
 	pctl->chip.direction_output	= axp20x_gpio_output;
 

-- 
2.45.2