linux-kernel - [PATCH 11/12] gpio: ep93xx: use new generic GPIO chip API

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Message-Id: <20250903-gpio-mmio-gpio-conv-part3-v1-11-ff346509f408@linaro.org>
Date: Wed, 03 Sep 2025 10:00:15 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>, Linus Walleij <linusw@...nel.org>, 
 Imre Kaloz <kaloz@...nwrt.org>, James Cowgill <james.cowgill@...ize.com>, 
 Matt Redfearn <matt.redfearn@...ize.com>, 
 Neil Jones <neil.jones@...ize.com>, 
 Nikolaos Pasaloukos <nikolaos.pasaloukos@...ize.com>
Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, 
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH 11/12] gpio: ep93xx: 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-ep93xx.c | 23 ++++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)

diff --git a/drivers/gpio/gpio-ep93xx.c b/drivers/gpio/gpio-ep93xx.c
index 08e5ae8bf4d1a80ca26680a3c7bff0b8039fa41a..c6c8170813331be567048980710226792b4b2a02 100644
--- a/drivers/gpio/gpio-ep93xx.c
+++ b/drivers/gpio/gpio-ep93xx.c
@@ -11,6 +11,7 @@
 
 #include <linux/bitops.h>
 #include <linux/gpio/driver.h>
+#include <linux/gpio/generic.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
@@ -31,11 +32,14 @@ struct ep93xx_gpio_irq_chip {
 
 struct ep93xx_gpio_chip {
 	void __iomem			*base;
-	struct gpio_chip		gc;
+	struct gpio_generic_chip	chip;
 	struct ep93xx_gpio_irq_chip	*eic;
 };
 
-#define to_ep93xx_gpio_chip(x) container_of(x, struct ep93xx_gpio_chip, gc)
+static struct ep93xx_gpio_chip *to_ep93xx_gpio_chip(struct gpio_chip *gc)
+{
+	return container_of(to_gpio_generic_chip(gc), struct ep93xx_gpio_chip, chip);
+}
 
 static struct ep93xx_gpio_irq_chip *to_ep93xx_gpio_irq_chip(struct gpio_chip *gc)
 {
@@ -267,7 +271,7 @@ static const struct irq_chip gpio_eic_irq_chip = {
 static int ep93xx_setup_irqs(struct platform_device *pdev,
 			     struct ep93xx_gpio_chip *egc)
 {
-	struct gpio_chip *gc = &egc->gc;
+	struct gpio_chip *gc = &egc->chip.gc;
 	struct device *dev = &pdev->dev;
 	struct gpio_irq_chip *girq = &gc->irq;
 	int ret, irq, i;
@@ -327,6 +331,7 @@ static int ep93xx_setup_irqs(struct platform_device *pdev,
 
 static int ep93xx_gpio_probe(struct platform_device *pdev)
 {
+	struct gpio_generic_chip_config config;
 	struct ep93xx_gpio_chip *egc;
 	struct gpio_chip *gc;
 	void __iomem *data;
@@ -345,8 +350,16 @@ static int ep93xx_gpio_probe(struct platform_device *pdev)
 	if (IS_ERR(dir))
 		return PTR_ERR(dir);
 
-	gc = &egc->gc;
-	ret = bgpio_init(gc, &pdev->dev, 1, data, NULL, NULL, dir, NULL, 0);
+	gc = &egc->chip.gc;
+
+	config = (typeof(config)){
+		.dev = &pdev->dev,
+		.sz = 1,
+		.dat = data,
+		.dirout = dir,
+	};
+
+	ret = gpio_generic_chip_init(&egc->chip, &config);
 	if (ret)
 		return dev_err_probe(&pdev->dev, ret, "unable to init generic GPIO\n");
 

-- 
2.48.1