linux-kernel - [PATCH 08/15] gpio: bt8xx: use new line value setter callbacks

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Message-Id: <20250310-gpiochip-set-conversion-v1-8-03798bb833eb@linaro.org>
Date: Mon, 10 Mar 2025 13:40:22 +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 08/15] gpio: bt8xx: 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-bt8xx.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/gpio/gpio-bt8xx.c b/drivers/gpio/gpio-bt8xx.c
index 173da7bbfc98..7c9e81fea37a 100644
--- a/drivers/gpio/gpio-bt8xx.c
+++ b/drivers/gpio/gpio-bt8xx.c
@@ -119,8 +119,7 @@ static int bt8xxgpio_gpio_direction_output(struct gpio_chip *gpio,
 	return 0;
 }
 
-static void bt8xxgpio_gpio_set(struct gpio_chip *gpio,
-			    unsigned nr, int val)
+static int bt8xxgpio_gpio_set(struct gpio_chip *gpio, unsigned int nr, int val)
 {
 	struct bt8xxgpio *bg = gpiochip_get_data(gpio);
 	u32 data;
@@ -133,6 +132,8 @@ static void bt8xxgpio_gpio_set(struct gpio_chip *gpio,
 	else
 		data &= ~(1 << nr);
 	bgwrite(data, BT848_GPIO_DATA);
+
+	return 0;
 }
 
 static void bt8xxgpio_gpio_setup(struct bt8xxgpio *bg)
@@ -144,7 +145,7 @@ static void bt8xxgpio_gpio_setup(struct bt8xxgpio *bg)
 	c->direction_input = bt8xxgpio_gpio_direction_input;
 	c->get = bt8xxgpio_gpio_get;
 	c->direction_output = bt8xxgpio_gpio_direction_output;
-	c->set = bt8xxgpio_gpio_set;
+	c->set_rv = bt8xxgpio_gpio_set;
 	c->dbg_show = NULL;
 	c->base = modparam_gpiobase;
 	c->ngpio = BT8XXGPIO_NR_GPIOS;

-- 
2.45.2