MIPS: RB532: Move dev3 init code to devices.c

This code doesn't belong to gpio.c, as it's completely unrelated to
GPIO. As dev1 and dev2 init code is in devices.c, it seems to be a more
adequate place.
Signed-off-by: NPhil Sutter <n0-1@freewrt.org>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

arch/mips/rb532/devices.c

@@ -42,6 +42,34 @@
 
 extern unsigned int idt_cpu_freq;
 
+static struct mpmc_device dev3;
+
+void set_latch_u5(unsigned char or_mask, unsigned char nand_mask)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&dev3.lock, flags);
+
+	dev3.state = (dev3.state | or_mask) & ~nand_mask;
+	writeb(dev3.state, dev3.base);
+
+	spin_unlock_irqrestore(&dev3.lock, flags);
+}
+EXPORT_SYMBOL(set_latch_u5);
+
+unsigned char get_latch_u5(void)
+{
+	return dev3.state;
+}
+EXPORT_SYMBOL(get_latch_u5);
+
+static struct resource rb532_dev3_ctl_res[] = {
+	{
+		.name	= "dev3_ctl",
+		.flags	= IORESOURCE_MEM,
+	}
+};
+
 static struct resource korina_dev0_res[] = {
 	{
 		.name = "korina_regs",
@@ -314,6 +342,17 @@ static int __init plat_setup_devices(void)
 	nand_slot0_res[0].start = readl(IDT434_REG_BASE + DEV2BASE);
 	nand_slot0_res[0].end = nand_slot0_res[0].start + 0x1000;
 
+	/* Read the third (multi purpose) resources from the DC */
+	rb532_dev3_ctl_res[0].start = readl(IDT434_REG_BASE + DEV3BASE);
+	rb532_dev3_ctl_res[0].end = rb532_dev3_ctl_res[0].start + 0x1000;
+
+	dev3.base = ioremap_nocache(rb532_dev3_ctl_res[0].start, 0x1000);
+
+	if (!dev3.base) {
+		printk(KERN_ERR "rb532: cannot remap device controller 3\n");
+		return -ENXIO;
+	}
+
 	/* Initialise the NAND device */
 	rb532_nand_setup();
 

arch/mips/rb532/gpio.c

@@ -41,8 +41,6 @@ struct rb532_gpio_chip {
 	void __iomem	 *regbase;
 };
 
-struct mpmc_device dev3;
-
 static struct resource rb532_gpio_reg0_res[] = {
 	{
 		.name 	= "gpio_reg0",
@@ -52,13 +50,6 @@ static struct resource rb532_gpio_reg0_res[] = {
 	}
 };
 
-static struct resource rb532_dev3_ctl_res[] = {
-	{
-		.name	= "dev3_ctl",
-		.flags	= IORESOURCE_MEM,
-	}
-};
-
 void set_434_reg(unsigned reg_offs, unsigned bit, unsigned len, unsigned val)
 {
 	unsigned long flags;
@@ -86,25 +77,6 @@ unsigned get_434_reg(unsigned reg_offs)
 }
 EXPORT_SYMBOL(get_434_reg);
 
-void set_latch_u5(unsigned char or_mask, unsigned char nand_mask)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&dev3.lock, flags);
-
-	dev3.state = (dev3.state | or_mask) & ~nand_mask;
-	writeb(dev3.state, dev3.base);
-
-	spin_unlock_irqrestore(&dev3.lock, flags);
-}
-EXPORT_SYMBOL(set_latch_u5);
-
-unsigned char get_latch_u5(void)
-{
-	return dev3.state;
-}
-EXPORT_SYMBOL(get_latch_u5);
-
 /* rb532_set_bit - sanely set a bit
  *
  * bitval: new value for the bit
@@ -249,17 +221,6 @@ int __init rb532_gpio_init(void)
 	/* Register our GPIO chip */
 	gpiochip_add(&rb532_gpio_chip->chip);
 
-	rb532_dev3_ctl_res[0].start = readl(IDT434_REG_BASE + DEV3BASE);
-	rb532_dev3_ctl_res[0].end = rb532_dev3_ctl_res[0].start + 0x1000;
-
-	r = rb532_dev3_ctl_res;
-	dev3.base = ioremap_nocache(r->start, r->end - r->start);
-
-	if (!dev3.base) {
-		printk(KERN_ERR "rb532: cannot remap device controller 3\n");
-		return -ENXIO;
-	}
-
 	return 0;
 }
 arch_initcall(rb532_gpio_init);