linux-kernel - [RFCv2 PATCH 5/8] arm64: Adding arch-specific acpi_init_irq_alloc

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Date:	Mon, 13 Jul 2015 16:14:21 +0700
From:	Suravee Suthikulpanit <Suravee.Suthikulpanit@....com>
To:	<tglx@...utronix.de>, <marc.zyngier@....com>,
	<lorenzo.pieralisi@....com>, <hanjun.guo@...aro.org>,
	<tomasz.nowicki@...aro.org>
CC:	<rjw@...ysocki.net>, <al.stone@...aro.org>,
	<catalin.marinas@....com>, <will.deacon@....com>,
	<msalter@...hat.com>, <grant.likely@...aro.org>,
	<leo.duran@....com>, <sherry.hurwitz@....com>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <linux-acpi@...r.kernel.org>,
	Suravee Suthikulpanit <Suravee.Suthikulpanit@....com>
Subject: [RFCv2 PATCH 5/8] arm64: Adding arch-specific acpi_init_irq_alloc_info

This patch addes ARM64-specific hook for calling arch-specific
irq_domain_ops.ini_alloc_info() before allocating irqs.

Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@....com>
---
 arch/arm64/kernel/acpi.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/arm64/kernel/acpi.c b/arch/arm64/kernel/acpi.c
index d6463bb..f3709dc 100644
--- a/arch/arm64/kernel/acpi.c
+++ b/arch/arm64/kernel/acpi.c
@@ -20,6 +20,7 @@
 #include <linux/cpumask.h>
 #include <linux/init.h>
 #include <linux/irq.h>
+#include <linux/irqchip/arm-gic.h>
 #include <linux/irqdomain.h>
 #include <linux/memblock.h>
 #include <linux/of_fdt.h>
@@ -205,3 +206,15 @@ void __init acpi_boot_table_init(void)
 			disable_acpi();
 	}
 }
+
+int acpi_init_irq_alloc_info(struct irq_domain *domain, u32 gsi, unsigned int irq_type,
+			 void **info)
+{
+	int ret;
+	uint32_t data[3] = {GIC_INT_TYPE_GSI, gsi, irq_type};
+
+	if (domain && domain->ops->init_alloc_info)
+		ret = domain->ops->init_alloc_info(data, 3, NULL, info);
+
+	return 0;
+}
-- 
2.1.0

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