linux-kernel - [PATCH RESEND 05/14] gpio: ts4800: use generic device properties

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Message-Id: <20250812-gpio-mmio-gpio-conv-v1-5-8492f4a4c1e4@linaro.org>
Date: Tue, 12 Aug 2025 11:58:00 +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 05/14] gpio: ts4800: use generic device properties

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

Avoid pulling in linux/of.h by using the generic device properties.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
---
 drivers/gpio/gpio-ts4800.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/gpio/gpio-ts4800.c b/drivers/gpio/gpio-ts4800.c
index 86f7947ca9b2d23292c1e6660fe93c611e0cb837..f4ae87325393c909c66eda3bb7b2f849e645b7a4 100644
--- a/drivers/gpio/gpio-ts4800.c
+++ b/drivers/gpio/gpio-ts4800.c
@@ -7,8 +7,8 @@
 
 #include <linux/gpio/driver.h>
 #include <linux/module.h>
-#include <linux/of.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 
 #define DEFAULT_PIN_NUMBER      16
 #define INPUT_REG_OFFSET        0x00
@@ -17,7 +17,7 @@
 
 static int ts4800_gpio_probe(struct platform_device *pdev)
 {
-	struct device_node *node;
+	struct device *dev = &pdev->dev;
 	struct gpio_chip *chip;
 	void __iomem *base_addr;
 	int retval;
@@ -31,11 +31,7 @@ static int ts4800_gpio_probe(struct platform_device *pdev)
 	if (IS_ERR(base_addr))
 		return PTR_ERR(base_addr);
 
-	node = pdev->dev.of_node;
-	if (!node)
-		return -EINVAL;
-
-	retval = of_property_read_u32(node, "ngpios", &ngpios);
+	retval = device_property_read_u32(dev, "ngpios", &ngpios);
 	if (retval == -EINVAL)
 		ngpios = DEFAULT_PIN_NUMBER;
 	else if (retval)

-- 
2.48.1