Subject: [PATCH v2 3/4] powerpc/52xx: Get rid of of_node assignment

From: Andy Shevchenko <[email-masked]>
Date: Sat, 7 May 2022 13:01:46 +0300

Let GPIO library assign of_node from the parent device.
This allows to move GPIO library and drivers to use fwnode
APIs instead of being stuck with OF-only interfaces.

Signed-off-by: Andy Shevchenko <[email-masked]>
---
v2: no changes
 arch/powerpc/platforms/52xx/mpc52xx_gpt.c | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/arch/powerpc/platforms/52xx/mpc52xx_gpt.c b/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
index 2605b4667b39..ae47fdcc8a96 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
@@ -58,6 +58,7 @@
 #include <linux/of_platform.h>
 #include <linux/of_gpio.h>
 #include <linux/kernel.h>
+#include <linux/property.h>
 #include <linux/slab.h>
 #include <linux/fs.h>
 #include <linux/watchdog.h>
@@ -314,17 +315,15 @@ mpc52xx_gpt_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
 	return 0;
 }
 
-static void
-mpc52xx_gpt_gpio_setup(struct mpc52xx_gpt_priv *gpt, struct device_node *node)
+static void mpc52xx_gpt_gpio_setup(struct mpc52xx_gpt_priv *gpt)
 {
 	int rc;
 
-	/* Only setup GPIO if the device tree claims the GPT is
-	 * a GPIO controller */
-	if (!of_find_property(node, "gpio-controller", NULL))
+	/* Only setup GPIO if the device claims the GPT is a GPIO controller */
+	if (!device_property_present(gpt->dev, "gpio-controller"))
 		return;
 
-	gpt->gc.label = kasprintf(GFP_KERNEL, "%pOF", node);
+	gpt->gc.label = kasprintf(GFP_KERNEL, "%pfw", dev_fwnode(gpt->dev));
 	if (!gpt->gc.label) {
 		dev_err(gpt->dev, "out of memory\n");
 		return;
@@ -336,7 +335,7 @@ mpc52xx_gpt_gpio_setup(struct mpc52xx_gpt_priv *gpt, struct device_node *node)
 	gpt->gc.get = mpc52xx_gpt_gpio_get;
 	gpt->gc.set = mpc52xx_gpt_gpio_set;
 	gpt->gc.base = -1;
-	gpt->gc.of_node = node;
+	gpt->gc.parent = gpt->dev;
 
 	/* Setup external pin in GPIO mode */
 	clrsetbits_be32(&gpt->regs->mode, MPC52xx_GPT_MODE_MS_MASK,
@@ -349,8 +348,7 @@ mpc52xx_gpt_gpio_setup(struct mpc52xx_gpt_priv *gpt, struct device_node *node)
 	dev_dbg(gpt->dev, "%s() complete.\n", __func__);
 }
 #else /* defined(CONFIG_GPIOLIB) */
-static void
-mpc52xx_gpt_gpio_setup(struct mpc52xx_gpt_priv *p, struct device_node *np) { }
+static void mpc52xx_gpt_gpio_setup(struct mpc52xx_gpt_priv *gpt) { }
 #endif /* defined(CONFIG_GPIOLIB) */
 
 /***********************************************************************
@@ -727,7 +725,7 @@ static int mpc52xx_gpt_probe(struct platform_device *ofdev)
 
 	dev_set_drvdata(&ofdev->dev, gpt);
 
-	mpc52xx_gpt_gpio_setup(gpt, ofdev->dev.of_node);
+	mpc52xx_gpt_gpio_setup(gpt);
 	mpc52xx_gpt_irq_setup(gpt, ofdev->dev.of_node);
 
 	mutex_lock(&mpc52xx_gpt_list_mutex);
-- 
2.35.1