Merge branch 'disintegrate-asm-generic' of git://git.infradead.org/users/dhowells/linux-headers into asm-generic

Patches from David Howells <dhowells@redhat.com>:

This is to complete part of the UAPI disintegration for which the
preparatory patches were pulled recently.

Note that there are some fixup patches which are at the base of the
branch aimed at you, plus all arches get the asm-generic branch merged in too.

* 'disintegrate-asm-generic' of git://git.infradead.org/users/dhowells/linux-headers:
  UAPI: (Scripted) Disintegrate include/asm-generic
  UAPI: Fix conditional header installation handling (notably kvm_para.h on m68k)
  c6x: remove c6x signal.h
  UAPI: Split compound conditionals containing __KERNEL__ in Arm64
  UAPI: Fix the guards on various asm/unistd.h files

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 110 insertions, 21 deletions

diff --git a/arch/arm/mach-pxa/irq.c b/arch/arm/mach-pxa/irq.c
index 5dae15ea6718..b6cc1816463e 100644
--- a/arch/arm/mach-pxa/irq.c
+++ b/arch/arm/mach-pxa/irq.c
@@ -17,6 +17,8 @@
 #include <linux/syscore_ops.h>
 #include <linux/io.h>
 #include <linux/irq.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
 
 #include <asm/exception.h>
 
@@ -25,8 +27,6 @@
 
 #include "generic.h"
 
-#define IRQ_BASE		io_p2v(0x40d00000)
-
 #define ICIP			(0x000)
 #define ICMR			(0x004)
 #define ICLR			(0x008)
@@ -48,22 +48,19 @@
  * This is for peripheral IRQs internal to the PXA chip.
  */
 
+static void __iomem *pxa_irq_base;
 static int pxa_internal_irq_nr;
-
-static inline int cpu_has_ipr(void)
-{
-	return !cpu_is_pxa25x();
-}
+static bool cpu_has_ipr;
 
 static inline void __iomem *irq_base(int i)
 {
-	static unsigned long phys_base[] = {
-		0x40d00000,
-		0x40d0009c,
-		0x40d00130,
+	static unsigned long phys_base_offset[] = {
+		0x0,
+		0x9c,
+		0x130,
 	};
 
-	return io_p2v(phys_base[i]);
+	return pxa_irq_base + phys_base_offset[i];
 }
 
 void pxa_mask_irq(struct irq_data *d)
@@ -96,8 +93,8 @@ asmlinkage void __exception_irq_entry icip_handle_irq(struct pt_regs *regs)
 	uint32_t icip, icmr, mask;
 
 	do {
-		icip = __raw_readl(IRQ_BASE + ICIP);
-		icmr = __raw_readl(IRQ_BASE + ICMR);
+		icip = __raw_readl(pxa_irq_base + ICIP);
+		icmr = __raw_readl(pxa_irq_base + ICMR);
 		mask = icip & icmr;
 
 		if (mask == 0)
@@ -128,6 +125,8 @@ void __init pxa_init_irq(int irq_nr, int (*fn)(struct irq_data *, unsigned int))
 	BUG_ON(irq_nr > MAX_INTERNAL_IRQS);
 
 	pxa_internal_irq_nr = irq_nr;
+	cpu_has_ipr = !cpu_is_pxa25x();
+	pxa_irq_base = io_p2v(0x40d00000);
 
 	for (n = 0; n < irq_nr; n += 32) {
 		void __iomem *base = irq_base(n >> 5);
@@ -136,8 +135,8 @@ void __init pxa_init_irq(int irq_nr, int (*fn)(struct irq_data *, unsigned int))
 		__raw_writel(0, base + ICLR);	/* all IRQs are IRQ, not FIQ */
 		for (i = n; (i < (n + 32)) && (i < irq_nr); i++) {
 			/* initialize interrupt priority */
-			if (cpu_has_ipr())
-				__raw_writel(i | IPR_VALID, IRQ_BASE + IPR(i));
+			if (cpu_has_ipr)
+				__raw_writel(i | IPR_VALID, pxa_irq_base + IPR(i));
 
 			irq = PXA_IRQ(i);
 			irq_set_chip_and_handler(irq, &pxa_internal_irq_chip,
@@ -168,9 +167,9 @@ static int pxa_irq_suspend(void)
 		__raw_writel(0, base + ICMR);
 	}
 
-	if (cpu_has_ipr()) {
+	if (cpu_has_ipr) {
 		for (i = 0; i < pxa_internal_irq_nr; i++)
-			saved_ipr[i] = __raw_readl(IRQ_BASE + IPR(i));
+			saved_ipr[i] = __raw_readl(pxa_irq_base + IPR(i));
 	}
 
 	return 0;
@@ -187,11 +186,11 @@ static void pxa_irq_resume(void)
 		__raw_writel(0, base + ICLR);
 	}
 
-	if (cpu_has_ipr())
+	if (cpu_has_ipr)
 		for (i = 0; i < pxa_internal_irq_nr; i++)
-			__raw_writel(saved_ipr[i], IRQ_BASE + IPR(i));
+			__raw_writel(saved_ipr[i], pxa_irq_base + IPR(i));
 
-	__raw_writel(1, IRQ_BASE + ICCR);
+	__raw_writel(1, pxa_irq_base + ICCR);
 }
 #else
 #define pxa_irq_suspend		NULL
@@ -202,3 +201,93 @@ struct syscore_ops pxa_irq_syscore_ops = {
 	.suspend	= pxa_irq_suspend,
 	.resume		= pxa_irq_resume,
 };
+
+#ifdef CONFIG_OF
+static struct irq_domain *pxa_irq_domain;
+
+static int pxa_irq_map(struct irq_domain *h, unsigned int virq,
+		       irq_hw_number_t hw)
+{
+	void __iomem *base = irq_base(hw / 32);
+
+	/* initialize interrupt priority */
+	if (cpu_has_ipr)
+		__raw_writel(hw | IPR_VALID, pxa_irq_base + IPR(hw));
+
+	irq_set_chip_and_handler(hw, &pxa_internal_irq_chip,
+				 handle_level_irq);
+	irq_set_chip_data(hw, base);
+	set_irq_flags(hw, IRQF_VALID);
+
+	return 0;
+}
+
+static struct irq_domain_ops pxa_irq_ops = {
+	.map    = pxa_irq_map,
+	.xlate  = irq_domain_xlate_onecell,
+};
+
+static const struct of_device_id intc_ids[] __initconst = {
+	{ .compatible = "marvell,pxa-intc", },
+	{}
+};
+
+void __init pxa_dt_irq_init(int (*fn)(struct irq_data *, unsigned int))
+{
+	struct device_node *node;
+	const struct of_device_id *of_id;
+	struct pxa_intc_conf *conf;
+	struct resource res;
+	int n, ret;
+
+	node = of_find_matching_node(NULL, intc_ids);
+	if (!node) {
+		pr_err("Failed to find interrupt controller in arch-pxa\n");
+		return;
+	}
+	of_id = of_match_node(intc_ids, node);
+	conf = of_id->data;
+
+	ret = of_property_read_u32(node, "marvell,intc-nr-irqs",
+				   &pxa_internal_irq_nr);
+	if (ret) {
+		pr_err("Not found marvell,intc-nr-irqs property\n");
+		return;
+	}
+
+	ret = of_address_to_resource(node, 0, &res);
+	if (ret < 0) {
+		pr_err("No registers defined for node\n");
+		return;
+	}
+	pxa_irq_base = io_p2v(res.start);
+
+	if (of_find_property(node, "marvell,intc-priority", NULL))
+		cpu_has_ipr = 1;
+
+	ret = irq_alloc_descs(-1, 0, pxa_internal_irq_nr, 0);
+	if (ret < 0) {
+		pr_err("Failed to allocate IRQ numbers\n");
+		return;
+	}
+
+	pxa_irq_domain = irq_domain_add_legacy(node, pxa_internal_irq_nr, 0, 0,
+					       &pxa_irq_ops, NULL);
+	if (!pxa_irq_domain)
+		panic("Unable to add PXA IRQ domain\n");
+
+	irq_set_default_host(pxa_irq_domain);
+
+	for (n = 0; n < pxa_internal_irq_nr; n += 32) {
+		void __iomem *base = irq_base(n >> 5);
+
+		__raw_writel(0, base + ICMR);	/* disable all IRQs */
+		__raw_writel(0, base + ICLR);	/* all IRQs are IRQ, not FIQ */
+	}
+
+	/* only unmasked interrupts kick us out of idle */
+	__raw_writel(1, irq_base(0) + ICCR);
+
+	pxa_internal_irq_chip.irq_set_wake = fn;
+}
+#endif /* CONFIG_OF */