linux-kernel - [PATCH 3/3] gpio: xilinx: use generic device properties

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Message-ID: <20240930144804.75068-3-brgl@bgdev.pl>
Date: Mon, 30 Sep 2024 16:48:04 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Linus Walleij <linus.walleij@...aro.org>,
	Shubhrajyoti Datta <shubhrajyoti.datta@....com>,
	Srinivas Neeli <srinivas.neeli@....com>,
	Michal Simek <michal.simek@....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 3/3] gpio: xilinx: use generic device properties

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

OF-specific routines should not be used unless necessary. Generic device
properties are preferred so switch to using them in the driver code.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
---
 drivers/gpio/gpio-xilinx.c | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/drivers/gpio/gpio-xilinx.c b/drivers/gpio/gpio-xilinx.c
index d99824d42c77..41c552a58059 100644
--- a/drivers/gpio/gpio-xilinx.c
+++ b/drivers/gpio/gpio-xilinx.c
@@ -15,7 +15,6 @@
 #include <linux/io.h>
 #include <linux/irq.h>
 #include <linux/module.h>
-#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/slab.h>
@@ -564,7 +563,6 @@ static int xgpio_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct xgpio_instance *chip;
 	int status = 0;
-	struct device_node *np = dev->of_node;
 	u32 is_dual = 0;
 	u32 width[2];
 	u32 state[2];
@@ -579,7 +577,7 @@ static int xgpio_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, chip);
 
 	/* First, check if the device is dual-channel */
-	of_property_read_u32(np, "xlnx,is-dual", &is_dual);
+	device_property_read_u32(dev, "xlnx,is-dual", &is_dual);
 
 	/* Setup defaults */
 	memset32(width, 0, ARRAY_SIZE(width));
@@ -587,14 +585,14 @@ static int xgpio_probe(struct platform_device *pdev)
 	memset32(dir, 0xFFFFFFFF, ARRAY_SIZE(dir));
 
 	/* Update GPIO state shadow register with default value */
-	of_property_read_u32(np, "xlnx,dout-default", &state[0]);
-	of_property_read_u32(np, "xlnx,dout-default-2", &state[1]);
+	device_property_read_u32(dev, "xlnx,dout-default", &state[0]);
+	device_property_read_u32(dev, "xlnx,dout-default-2", &state[1]);
 
 	bitmap_from_arr32(chip->state, state, 64);
 
 	/* Update GPIO direction shadow register with default value */
-	of_property_read_u32(np, "xlnx,tri-default", &dir[0]);
-	of_property_read_u32(np, "xlnx,tri-default-2", &dir[1]);
+	device_property_read_u32(dev, "xlnx,tri-default", &dir[0]);
+	device_property_read_u32(dev, "xlnx,tri-default-2", &dir[1]);
 
 	bitmap_from_arr32(chip->dir, dir, 64);
 
@@ -602,13 +600,13 @@ static int xgpio_probe(struct platform_device *pdev)
 	 * Check device node and parent device node for device width
 	 * and assume default width of 32
 	 */
-	if (of_property_read_u32(np, "xlnx,gpio-width", &width[0]))
+	if (device_property_read_u32(dev, "xlnx,gpio-width", &width[0]))
 		width[0] = 32;
 
 	if (width[0] > 32)
 		return -EINVAL;
 
-	if (is_dual && of_property_read_u32(np, "xlnx,gpio2-width", &width[1]))
+	if (is_dual && device_property_read_u32(dev, "xlnx,gpio2-width", &width[1]))
 		width[1] = 32;
 
 	if (width[1] > 32)
-- 
2.43.0