linux-kernel - [PATCH 08/12] gpio: max732x: use new GPIO line value setter callbacks

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Message-Id: <20250506-gpiochip-set-rv-gpio-part3-v1-8-0fbdea5a9667@linaro.org>
Date: Tue, 06 May 2025 11:01:51 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>, Vladimir Zapolskiy <vz@...ia.com>, 
 Piotr Wojtaszczyk <piotr.wojtaszczyk@...esys.com>, 
 Charles Keepax <ckeepax@...nsource.cirrus.com>, 
 Richard Fitzgerald <rf@...nsource.cirrus.com>, 
 Andy Shevchenko <andy@...nel.org>
Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, linux-sound@...r.kernel.org, 
 patches@...nsource.cirrus.com, 
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH 08/12] gpio: max732x: 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/gpio/gpio-max732x.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/drivers/gpio/gpio-max732x.c b/drivers/gpio/gpio-max732x.c
index 49d362907bc7d..d5ffedb086af4 100644
--- a/drivers/gpio/gpio-max732x.c
+++ b/drivers/gpio/gpio-max732x.c
@@ -225,16 +225,19 @@ static void max732x_gpio_set_mask(struct gpio_chip *gc, unsigned off, int mask,
 	mutex_unlock(&chip->lock);
 }
 
-static void max732x_gpio_set_value(struct gpio_chip *gc, unsigned off, int val)
+static int max732x_gpio_set_value(struct gpio_chip *gc, unsigned int off,
+				  int val)
 {
 	unsigned base = off & ~0x7;
 	uint8_t mask = 1u << (off & 0x7);
 
 	max732x_gpio_set_mask(gc, base, mask, val << (off & 0x7));
+
+	return 0;
 }
 
-static void max732x_gpio_set_multiple(struct gpio_chip *gc,
-				      unsigned long *mask, unsigned long *bits)
+static int max732x_gpio_set_multiple(struct gpio_chip *gc,
+				     unsigned long *mask, unsigned long *bits)
 {
 	unsigned mask_lo = mask[0] & 0xff;
 	unsigned mask_hi = (mask[0] >> 8) & 0xff;
@@ -243,6 +246,8 @@ static void max732x_gpio_set_multiple(struct gpio_chip *gc,
 		max732x_gpio_set_mask(gc, 0, mask_lo, bits[0] & 0xff);
 	if (mask_hi)
 		max732x_gpio_set_mask(gc, 8, mask_hi, (bits[0] >> 8) & 0xff);
+
+	return 0;
 }
 
 static int max732x_gpio_direction_input(struct gpio_chip *gc, unsigned off)
@@ -580,8 +585,8 @@ static int max732x_setup_gpio(struct max732x_chip *chip,
 		gc->direction_input = max732x_gpio_direction_input;
 	if (chip->dir_output) {
 		gc->direction_output = max732x_gpio_direction_output;
-		gc->set = max732x_gpio_set_value;
-		gc->set_multiple = max732x_gpio_set_multiple;
+		gc->set_rv = max732x_gpio_set_value;
+		gc->set_multiple_rv = max732x_gpio_set_multiple;
 	}
 	gc->get = max732x_gpio_get_value;
 	gc->can_sleep = true;

-- 
2.45.2