linux-kernel - [PATCH RESEND 11/14] gpio: rda: use new generic GPIO chip API

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Message-Id: <20250812-gpio-mmio-gpio-conv-v1-11-aac41d656979@linaro.org>
Date: Tue, 12 Aug 2025 14:12:53 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>, Yinbo Zhu <zhuyinbo@...ngson.cn>, 
 Hoan Tran <hoan@...amperecomputing.com>, 
 Manivannan Sadhasivam <mani@...nel.org>, Yang Shen <shenyang39@...wei.com>
Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, linux-unisoc@...ts.infradead.org, 
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH RESEND 11/14] gpio: rda: use new generic GPIO chip API

From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>

Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
---
 drivers/gpio/gpio-rda.c | 35 +++++++++++++++++++++--------------
 1 file changed, 21 insertions(+), 14 deletions(-)

diff --git a/drivers/gpio/gpio-rda.c b/drivers/gpio/gpio-rda.c
index cb2f63eee2aa10a2708ec91dfd610ed1ea76917d..bcd85a2237a532b875df9470d972ac88b95a91cc 100644
--- a/drivers/gpio/gpio-rda.c
+++ b/drivers/gpio/gpio-rda.c
@@ -8,6 +8,7 @@
 
 #include <linux/bitops.h>
 #include <linux/gpio/driver.h>
+#include <linux/gpio/generic.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
@@ -35,7 +36,7 @@
 #define RDA_GPIO_BANK_NR	32
 
 struct rda_gpio {
-	struct gpio_chip chip;
+	struct gpio_generic_chip chip;
 	void __iomem *base;
 	spinlock_t lock;
 	int irq;
@@ -208,6 +209,7 @@ static const struct irq_chip rda_gpio_irq_chip = {
 
 static int rda_gpio_probe(struct platform_device *pdev)
 {
+	struct gpio_generic_chip_config config;
 	struct device *dev = &pdev->dev;
 	struct gpio_irq_chip *girq;
 	struct rda_gpio *rda_gpio;
@@ -235,24 +237,29 @@ static int rda_gpio_probe(struct platform_device *pdev)
 
 	spin_lock_init(&rda_gpio->lock);
 
-	ret = bgpio_init(&rda_gpio->chip, dev, 4,
-			 rda_gpio->base + RDA_GPIO_VAL,
-			 rda_gpio->base + RDA_GPIO_SET,
-			 rda_gpio->base + RDA_GPIO_CLR,
-			 rda_gpio->base + RDA_GPIO_OEN_SET_OUT,
-			 rda_gpio->base + RDA_GPIO_OEN_SET_IN,
-			 BGPIOF_READ_OUTPUT_REG_SET);
+	config = (typeof(config)){
+		.dev = dev,
+		.sz = 4,
+		.dat = rda_gpio->base + RDA_GPIO_VAL,
+		.set = rda_gpio->base + RDA_GPIO_SET,
+		.clr = rda_gpio->base + RDA_GPIO_CLR,
+		.dirout = rda_gpio->base + RDA_GPIO_OEN_SET_OUT,
+		.dirin = rda_gpio->base + RDA_GPIO_OEN_SET_IN,
+		.flags = BGPIOF_READ_OUTPUT_REG_SET,
+	};
+
+	ret = gpio_generic_chip_init(&rda_gpio->chip, &config);
 	if (ret) {
-		dev_err(dev, "bgpio_init failed\n");
+		dev_err(dev, "failed to initialize the generic GPIO chip\n");
 		return ret;
 	}
 
-	rda_gpio->chip.label = dev_name(dev);
-	rda_gpio->chip.ngpio = ngpios;
-	rda_gpio->chip.base = -1;
+	rda_gpio->chip.gc.label = dev_name(dev);
+	rda_gpio->chip.gc.ngpio = ngpios;
+	rda_gpio->chip.gc.base = -1;
 
 	if (rda_gpio->irq >= 0) {
-		girq = &rda_gpio->chip.irq;
+		girq = &rda_gpio->chip.gc.irq;
 		gpio_irq_chip_set_chip(girq, &rda_gpio_irq_chip);
 		girq->handler = handle_bad_irq;
 		girq->default_type = IRQ_TYPE_NONE;
@@ -269,7 +276,7 @@ static int rda_gpio_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, rda_gpio);
 
-	return devm_gpiochip_add_data(dev, &rda_gpio->chip, rda_gpio);
+	return devm_gpiochip_add_data(dev, &rda_gpio->chip.gc, rda_gpio);
 }
 
 static const struct of_device_id rda_gpio_of_match[] = {

-- 
2.48.1