ARM: orion/gpio: Get rid of unused first parameter in orion_gpio_init()

The OF node pointer is always NULL, get rid of unused parameter in
orion_gpio_init(). As a side effect it will allow to switch GPIO
library to the fwnode API, as well as in case of resurrecting it here
it should be fwnode_handle anyways.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>

arch/arm/mach-dove/irq.c

@@ -73,12 +73,12 @@ void __init dove_init_irq(void)
 	/*
 	 * Initialize gpiolib for GPIOs 0-71.
 	 */
-	orion_gpio_init(NULL, 0, 32, DOVE_GPIO_LO_VIRT_BASE, 0,
+	orion_gpio_init(0, 32, DOVE_GPIO_LO_VIRT_BASE, 0,
 			IRQ_DOVE_GPIO_START, gpio0_irqs);
 
-	orion_gpio_init(NULL, 32, 32, DOVE_GPIO_HI_VIRT_BASE, 0,
+	orion_gpio_init(32, 32, DOVE_GPIO_HI_VIRT_BASE, 0,
 			IRQ_DOVE_GPIO_START + 32, gpio1_irqs);
 
-	orion_gpio_init(NULL, 64, 8, DOVE_GPIO2_VIRT_BASE, 0,
+	orion_gpio_init(64, 8, DOVE_GPIO2_VIRT_BASE, 0,
 			IRQ_DOVE_GPIO_START + 64, gpio2_irqs);
 }

arch/arm/mach-mv78xx0/irq.c

@@ -67,7 +67,6 @@ void __init mv78xx0_init_irq(void)
 	 * registers for core #1 are at an offset of 0x18 from those of
 	 * core #0.)
 	 */
-	orion_gpio_init(NULL, 0, 32, GPIO_VIRT_BASE,
-			mv78xx0_core_index() ? 0x18 : 0,
+	orion_gpio_init(0, 32, GPIO_VIRT_BASE, mv78xx0_core_index() ? 0x18 : 0,
 			IRQ_MV78XX0_GPIO_START, gpio0_irqs);
 }

arch/arm/mach-orion5x/irq.c

@@ -49,6 +49,6 @@ void __init orion5x_init_irq(void)
 	/*
 	 * Initialize gpiolib for GPIOs 0-31.
 	 */
-	orion_gpio_init(NULL, 0, 32, GPIO_VIRT_BASE, 0,
+	orion_gpio_init(0, 32, GPIO_VIRT_BASE, 0,
 			IRQ_ORION5X_GPIO_START, gpio0_irqs);
 }

arch/arm/plat-orion/gpio.c

@@ -516,8 +516,7 @@ static void orion_gpio_mask_irq(struct irq_data *d)
 	irq_gc_unlock(gc);
 }
 
-void __init orion_gpio_init(struct device_node *np,
-			    int gpio_base, int ngpio,
+void __init orion_gpio_init(int gpio_base, int ngpio,
 			    void __iomem *base, int mask_offset,
 			    int secondary_irq_base,
 			    int irqs[4])
@@ -545,9 +544,6 @@ void __init orion_gpio_init(struct device_node *np,
 	ochip->chip.base = gpio_base;
 	ochip->chip.ngpio = ngpio;
 	ochip->chip.can_sleep = 0;
-#ifdef CONFIG_OF
-	ochip->chip.of_node = np;
-#endif
 	ochip->chip.dbg_show = orion_gpio_dbg_show;
 
 	spin_lock_init(&ochip->lock);
@@ -605,7 +601,7 @@ void __init orion_gpio_init(struct device_node *np,
 			       IRQ_NOREQUEST, IRQ_LEVEL | IRQ_NOPROBE);
 
 	/* Setup irq domain on top of the generic chip. */
-	ochip->domain = irq_domain_add_legacy(np,
+	ochip->domain = irq_domain_add_legacy(NULL,
 					      ochip->chip.ngpio,
 					      ochip->secondary_irq_base,
 					      ochip->secondary_irq_base,

arch/arm/plat-orion/include/plat/orion-gpio.h

@@ -30,8 +30,7 @@ int orion_gpio_led_blink_set(struct gpio_desc *desc, int state,
 void orion_gpio_set_valid(unsigned pin, int mode);
 
 /* Initialize gpiolib. */
-void __init orion_gpio_init(struct device_node *np,
-			    int gpio_base, int ngpio,
+void __init orion_gpio_init(int gpio_base, int ngpio,
 			    void __iomem *base, int mask_offset,
 			    int secondary_irq_base,
 			    int irq[4]);