linux-kernel - [PATCH 12/15] gpio: crystalcove: use new line value setter callbacks

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Message-Id: <20250310-gpiochip-set-conversion-v1-12-03798bb833eb@linaro.org>
Date: Mon, 10 Mar 2025 13:40:26 +0100
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Ray Jui <rjui@...adcom.com>, 
 Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>, 
 Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>, 
 Florian Fainelli <florian.fainelli@...adcom.com>, 
 Scott Branden <sbranden@...adcom.com>, 
 Matti Vaittinen <mazziesaccount@...il.com>, 
 Marek Vasut <marek.vasut+renesas@...il.com>, Michael Buesch <m@...s.ch>, 
 Thomas Richard <thomas.richard@...tlin.com>, 
 Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>, 
 Benson Leung <bleung@...omium.org>, Guenter Roeck <groeck@...omium.org>, 
 Andy Shevchenko <andy@...nel.org>, 
 Support Opensource <support.opensource@...semi.com>
Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-renesas-soc@...r.kernel.org, chrome-platform@...ts.linux.dev, 
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH 12/15] gpio: crystalcove: 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>
---
 drivers/gpio/gpio-crystalcove.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/gpio/gpio-crystalcove.c b/drivers/gpio/gpio-crystalcove.c
index 56effd0f50c7..8db7cca3a060 100644
--- a/drivers/gpio/gpio-crystalcove.c
+++ b/drivers/gpio/gpio-crystalcove.c
@@ -168,18 +168,18 @@ static int crystalcove_gpio_get(struct gpio_chip *chip, unsigned int gpio)
 	return val & 0x1;
 }
 
-static void crystalcove_gpio_set(struct gpio_chip *chip, unsigned int gpio, int value)
+static int crystalcove_gpio_set(struct gpio_chip *chip, unsigned int gpio, int value)
 {
 	struct crystalcove_gpio *cg = gpiochip_get_data(chip);
 	int reg = to_reg(gpio, CTRL_OUT);
 
 	if (reg < 0)
-		return;
+		return 0;
 
 	if (value)
-		regmap_update_bits(cg->regmap, reg, 1, 1);
-	else
-		regmap_update_bits(cg->regmap, reg, 1, 0);
+		return regmap_update_bits(cg->regmap, reg, 1, 1);
+
+	return regmap_update_bits(cg->regmap, reg, 1, 0);
 }
 
 static int crystalcove_irq_type(struct irq_data *data, unsigned int type)
@@ -349,7 +349,7 @@ static int crystalcove_gpio_probe(struct platform_device *pdev)
 	cg->chip.direction_input = crystalcove_gpio_dir_in;
 	cg->chip.direction_output = crystalcove_gpio_dir_out;
 	cg->chip.get = crystalcove_gpio_get;
-	cg->chip.set = crystalcove_gpio_set;
+	cg->chip.set_rv = crystalcove_gpio_set;
 	cg->chip.base = -1;
 	cg->chip.ngpio = CRYSTALCOVE_VGPIO_NUM;
 	cg->chip.can_sleep = true;

-- 
2.45.2