linux-kernel - [PATCH 4/4] MIPS: txx9: gpio: use new line value setter callbacks

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Message-Id: <20250407-gpiochip-set-rv-mips-v1-4-e7f74a4eee2b@linaro.org>
Date: Mon, 07 Apr 2025 09:25:10 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Thomas Bogendoerfer <tsbogend@...ha.franken.de>, 
 Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>
Cc: linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-gpio@...r.kernel.org, 
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH 4/4] MIPS: txx9: gpio: 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 drivers to using
them.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
---
 arch/mips/kernel/gpio_txx9.c   | 8 +++++---
 arch/mips/txx9/generic/setup.c | 8 +++++---
 2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/arch/mips/kernel/gpio_txx9.c b/arch/mips/kernel/gpio_txx9.c
index 8c083612df9d..027fb57d0d79 100644
--- a/arch/mips/kernel/gpio_txx9.c
+++ b/arch/mips/kernel/gpio_txx9.c
@@ -32,14 +32,16 @@ static void txx9_gpio_set_raw(unsigned int offset, int value)
 	__raw_writel(val, &txx9_pioptr->dout);
 }
 
-static void txx9_gpio_set(struct gpio_chip *chip, unsigned int offset,
-			  int value)
+static int txx9_gpio_set(struct gpio_chip *chip, unsigned int offset,
+			 int value)
 {
 	unsigned long flags;
 	spin_lock_irqsave(&txx9_gpio_lock, flags);
 	txx9_gpio_set_raw(offset, value);
 	mmiowb();
 	spin_unlock_irqrestore(&txx9_gpio_lock, flags);
+
+	return 0;
 }
 
 static int txx9_gpio_dir_in(struct gpio_chip *chip, unsigned int offset)
@@ -68,7 +70,7 @@ static int txx9_gpio_dir_out(struct gpio_chip *chip, unsigned int offset,
 
 static struct gpio_chip txx9_gpio_chip = {
 	.get = txx9_gpio_get,
-	.set = txx9_gpio_set,
+	.set_rv = txx9_gpio_set,
 	.direction_input = txx9_gpio_dir_in,
 	.direction_output = txx9_gpio_dir_out,
 	.label = "TXx9",
diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c
index 1e67fecd466e..0586ca7668b4 100644
--- a/arch/mips/txx9/generic/setup.c
+++ b/arch/mips/txx9/generic/setup.c
@@ -603,8 +603,8 @@ static int txx9_iocled_get(struct gpio_chip *chip, unsigned int offset)
 	return !!(data->cur_val & (1 << offset));
 }
 
-static void txx9_iocled_set(struct gpio_chip *chip, unsigned int offset,
-			    int value)
+static int txx9_iocled_set(struct gpio_chip *chip, unsigned int offset,
+			   int value)
 {
 	struct txx9_iocled_data *data = gpiochip_get_data(chip);
 	unsigned long flags;
@@ -616,6 +616,8 @@ static void txx9_iocled_set(struct gpio_chip *chip, unsigned int offset,
 	writeb(data->cur_val, data->mmioaddr);
 	mmiowb();
 	spin_unlock_irqrestore(&txx9_iocled_lock, flags);
+
+	return 0;
 }
 
 static int txx9_iocled_dir_in(struct gpio_chip *chip, unsigned int offset)
@@ -653,7 +655,7 @@ void __init txx9_iocled_init(unsigned long baseaddr,
 	if (!iocled->mmioaddr)
 		goto out_free;
 	iocled->chip.get = txx9_iocled_get;
-	iocled->chip.set = txx9_iocled_set;
+	iocled->chip.set_rv = txx9_iocled_set;
 	iocled->chip.direction_input = txx9_iocled_dir_in;
 	iocled->chip.direction_output = txx9_iocled_dir_out;
 	iocled->chip.label = "iocled";

-- 
2.45.2