gpio: tc3589x: use new GPIO line value setter callbacks

struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.

Link: https://lore.kernel.org/r/20250625-gpiochip-set-rv-gpio-round2-v1-12-bc110a3b52ff@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

diff --git a/drivers/gpio/gpio-tc3589x.c b/drivers/gpio/gpio-tc3589x.c
index e62ee7e56908f9125ccb6deb21130a5d9043fbde..0bd32809fd682bac7b16b1f251887abebb44acdc 100644 (file)
--- a/drivers/gpio/gpio-tc3589x.c
+++ b/drivers/gpio/gpio-tc3589x.c
@@ -49,7 +49,7 @@ static int tc3589x_gpio_get(struct gpio_chip *chip, unsigned int offset)
        return !!(ret & mask);
 }
 
-static void tc3589x_gpio_set(struct gpio_chip *chip, unsigned int offset, int val)
+static int tc3589x_gpio_set(struct gpio_chip *chip, unsigned int offset, int val)
 {
        struct tc3589x_gpio *tc3589x_gpio = gpiochip_get_data(chip);
        struct tc3589x *tc3589x = tc3589x_gpio->tc3589x;
@@ -57,7 +57,7 @@ static void tc3589x_gpio_set(struct gpio_chip *chip, unsigned int offset, int va
        unsigned int pos = offset % 8;
        u8 data[] = {val ? BIT(pos) : 0, BIT(pos)};
 
-       tc3589x_block_write(tc3589x, reg, ARRAY_SIZE(data), data);
+       return tc3589x_block_write(tc3589x, reg, ARRAY_SIZE(data), data);
 }
 
 static int tc3589x_gpio_direction_output(struct gpio_chip *chip,
@@ -67,8 +67,11 @@ static int tc3589x_gpio_direction_output(struct gpio_chip *chip,
        struct tc3589x *tc3589x = tc3589x_gpio->tc3589x;
        u8 reg = TC3589x_GPIODIR0 + offset / 8;
        unsigned int pos = offset % 8;
+       int ret;
 
-       tc3589x_gpio_set(chip, offset, val);
+       ret = tc3589x_gpio_set(chip, offset, val);
+       if (ret)
+               return ret;
 
        return tc3589x_set_bits(tc3589x, reg, BIT(pos), BIT(pos));
 }
@@ -146,7 +149,7 @@ static const struct gpio_chip template_chip = {
        .label                  = "tc3589x",
        .owner                  = THIS_MODULE,
        .get                    = tc3589x_gpio_get,
-       .set                    = tc3589x_gpio_set,
+       .set_rv                 = tc3589x_gpio_set,
        .direction_output       = tc3589x_gpio_direction_output,
        .direction_input        = tc3589x_gpio_direction_input,
        .get_direction          = tc3589x_gpio_get_direction,