irqchip/davinci-cp-intc: Remove public header

There are no more users of irq-davinci-cp-intc.h (da830.c doesn't use
any of its symbols). Remove the header and make the driver stop using the
config structure.

[ tglx: Mop up coding style ]

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20250304131815.86549-1-brgl@bgdev.pl

Author: Bartosz Golaszewski

arch/arm/mach-davinci/da830.c

@@ -11,7 +11,6 @@
 #include <linux/gpio.h>
 #include <linux/init.h>
 #include <linux/io.h>
-#include <linux/irqchip/irq-davinci-cp-intc.h>
 
 #include <clocksource/timer-davinci.h>
 

drivers/irqchip/irq-davinci-cp-intc.c

@@ -11,7 +11,6 @@
 #include <linux/init.h>
 #include <linux/irq.h>
 #include <linux/irqchip.h>
-#include <linux/irqchip/irq-davinci-cp-intc.h>
 #include <linux/irqdomain.h>
 #include <linux/io.h>
 #include <linux/of.h>
@@ -154,24 +153,20 @@ static const struct irq_domain_ops davinci_cp_intc_irq_domain_ops = {
 	.xlate = irq_domain_xlate_onetwocell,
 };
 
-static int __init
-davinci_cp_intc_do_init(const struct davinci_cp_intc_config *config,
-			struct device_node *node)
+static int __init davinci_cp_intc_do_init(struct resource *res, unsigned int num_irqs,
+					  struct device_node *node)
 {
-	unsigned int num_regs = BITS_TO_LONGS(config->num_irqs);
+	unsigned int num_regs = BITS_TO_LONGS(num_irqs);
 	int offset, irq_base;
 	void __iomem *req;
 
-	req = request_mem_region(config->reg.start,
-				 resource_size(&config->reg),
-				 "davinci-cp-intc");
+	req = request_mem_region(res->start, resource_size(res), "davinci-cp-intc");
 	if (!req) {
 		pr_err("%s: register range busy\n", __func__);
 		return -EBUSY;
 	}
 
-	davinci_cp_intc_base = ioremap(config->reg.start,
-				       resource_size(&config->reg));
+	davinci_cp_intc_base = ioremap(res->start, resource_size(res));
 	if (!davinci_cp_intc_base) {
 		pr_err("%s: unable to ioremap register range\n", __func__);
 		return -EINVAL;
@@ -184,37 +179,33 @@ davinci_cp_intc_do_init(const struct davinci_cp_intc_config *config,
 
 	/* Disable system interrupts */
 	for (offset = 0; offset < num_regs; offset++)
-		davinci_cp_intc_write(~0,
-			DAVINCI_CP_INTC_SYS_ENABLE_CLR(offset));
+		davinci_cp_intc_write(~0, DAVINCI_CP_INTC_SYS_ENABLE_CLR(offset));
 
 	/* Set to normal mode, no nesting, no priority hold */
 	davinci_cp_intc_write(0, DAVINCI_CP_INTC_CTRL);
 	davinci_cp_intc_write(0, DAVINCI_CP_INTC_HOST_CTRL);
 
 	/* Clear system interrupt status */
 	for (offset = 0; offset < num_regs; offset++)
-		davinci_cp_intc_write(~0,
-			DAVINCI_CP_INTC_SYS_STAT_CLR(offset));
+		davinci_cp_intc_write(~0, DAVINCI_CP_INTC_SYS_STAT_CLR(offset));
 
 	/* Enable nIRQ (what about nFIQ?) */
 	davinci_cp_intc_write(1, DAVINCI_CP_INTC_HOST_ENABLE_IDX_SET);
 
+	/* 4 channels per register */
+	num_regs = (num_irqs + 3) >> 2;
 	/* Default all priorities to channel 7. */
-	num_regs = (config->num_irqs + 3) >> 2;	/* 4 channels per register */
 	for (offset = 0; offset < num_regs; offset++)
-		davinci_cp_intc_write(0x07070707,
-			DAVINCI_CP_INTC_CHAN_MAP(offset));
+		davinci_cp_intc_write(0x07070707, DAVINCI_CP_INTC_CHAN_MAP(offset));
 
-	irq_base = irq_alloc_descs(-1, 0, config->num_irqs, 0);
+	irq_base = irq_alloc_descs(-1, 0, num_irqs, 0);
 	if (irq_base < 0) {
-		pr_err("%s: unable to allocate interrupt descriptors: %d\n",
-		       __func__, irq_base);
+		pr_err("%s: unable to allocate interrupt descriptors: %d\n", __func__, irq_base);
 		return irq_base;
 	}
 
-	davinci_cp_intc_irq_domain = irq_domain_add_legacy(
-					node, config->num_irqs, irq_base, 0,
-					&davinci_cp_intc_irq_domain_ops, NULL);
+	davinci_cp_intc_irq_domain = irq_domain_add_legacy(node, num_irqs, irq_base, 0,
+							   &davinci_cp_intc_irq_domain_ops, NULL);
 
 	if (!davinci_cp_intc_irq_domain) {
 		pr_err("%s: unable to create an interrupt domain\n", __func__);
@@ -229,31 +220,25 @@ davinci_cp_intc_do_init(const struct davinci_cp_intc_config *config,
 	return 0;
 }
 
-int __init davinci_cp_intc_init(const struct davinci_cp_intc_config *config)
-{
-	return davinci_cp_intc_do_init(config, NULL);
-}
-
 static int __init davinci_cp_intc_of_init(struct device_node *node,
 					  struct device_node *parent)
 {
-	struct davinci_cp_intc_config config = { };
+	unsigned int num_irqs;
+	struct resource res;
 	int ret;
 
-	ret = of_address_to_resource(node, 0, &config.reg);
+	ret = of_address_to_resource(node, 0, &res);
 	if (ret) {
-		pr_err("%s: unable to get the register range from device-tree\n",
-		       __func__);
+		pr_err("%s: unable to get the register range from device-tree\n", __func__);
 		return ret;
 	}
 
-	ret = of_property_read_u32(node, "ti,intc-size", &config.num_irqs);
+	ret = of_property_read_u32(node, "ti,intc-size", &num_irqs);
 	if (ret) {
-		pr_err("%s: unable to read the 'ti,intc-size' property\n",
-		       __func__);
+		pr_err("%s: unable to read the 'ti,intc-size' property\n", __func__);
 		return ret;
 	}
 
-	return davinci_cp_intc_do_init(&config, node);
+	return davinci_cp_intc_do_init(&res, num_irqs, node);
 }
 IRQCHIP_DECLARE(cp_intc, "ti,cp-intc", davinci_cp_intc_of_init);