linux-kernel - [PATCH 04/12] pinctrl: owl: use new GPIO line value setter callbacks

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Message-Id: <20250424-gpiochip-set-rv-pinctrl-part2-v1-4-504f91120b99@linaro.org>
Date: Thu, 24 Apr 2025 10:35:27 +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 04/12] pinctrl: owl: 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/actions/pinctrl-owl.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/pinctrl/actions/pinctrl-owl.c b/drivers/pinctrl/actions/pinctrl-owl.c
index d49b77dcfcff..86f3d5c69e36 100644
--- a/drivers/pinctrl/actions/pinctrl-owl.c
+++ b/drivers/pinctrl/actions/pinctrl-owl.c
@@ -598,7 +598,7 @@ static int owl_gpio_get(struct gpio_chip *chip, unsigned int offset)
 	return !!(val & BIT(offset));
 }
 
-static void owl_gpio_set(struct gpio_chip *chip, unsigned int offset, int value)
+static int owl_gpio_set(struct gpio_chip *chip, unsigned int offset, int value)
 {
 	struct owl_pinctrl *pctrl = gpiochip_get_data(chip);
 	const struct owl_gpio_port *port;
@@ -607,13 +607,15 @@ static void owl_gpio_set(struct gpio_chip *chip, unsigned int offset, int value)
 
 	port = owl_gpio_get_port(pctrl, &offset);
 	if (WARN_ON(port == NULL))
-		return;
+		return -ENODEV;
 
 	gpio_base = pctrl->base + port->offset;
 
 	raw_spin_lock_irqsave(&pctrl->lock, flags);
 	owl_gpio_update_reg(gpio_base + port->dat, offset, value);
 	raw_spin_unlock_irqrestore(&pctrl->lock, flags);
+
+	return 0;
 }
 
 static int owl_gpio_direction_input(struct gpio_chip *chip, unsigned int offset)
@@ -960,7 +962,7 @@ int owl_pinctrl_probe(struct platform_device *pdev,
 	pctrl->chip.direction_input  = owl_gpio_direction_input;
 	pctrl->chip.direction_output = owl_gpio_direction_output;
 	pctrl->chip.get = owl_gpio_get;
-	pctrl->chip.set = owl_gpio_set;
+	pctrl->chip.set_rv = owl_gpio_set;
 	pctrl->chip.request = owl_gpio_request;
 	pctrl->chip.free = owl_gpio_free;
 

-- 
2.45.2