From: dbaryshkov@gmail.com (Dmitry Eremin-Solenikov)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 01/10] ARM: sa1100: switch to MULTI_IRQ_HANDLER
Date: Sun, 15 Dec 2013 08:28:08 +0400 [thread overview]
Message-ID: <1387081697-21841-2-git-send-email-dbaryshkov@gmail.com> (raw)
In-Reply-To: <1387081697-21841-1-git-send-email-dbaryshkov@gmail.com>
Add sa1100_handle_irq implementating handle_irq for sa1100 platform.
It is more or less a translation of old assembly code from assembler to
plain C. Alsi install this irq handler from sa1100_init_irq().
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
---
arch/arm/Kconfig | 1 +
arch/arm/mach-sa1100/irq.c | 20 ++++++++++++++++++++
2 files changed, 21 insertions(+)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index c1f1a7e..14e907e 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -693,6 +693,7 @@ config ARCH_SA1100
select GENERIC_CLOCKEVENTS
select HAVE_IDE
select ISA
+ select MULTI_IRQ_HANDLER
select NEED_MACH_MEMORY_H
select SPARSE_IRQ
help
diff --git a/arch/arm/mach-sa1100/irq.c b/arch/arm/mach-sa1100/irq.c
index 2124f1fc..68e8f9d 100644
--- a/arch/arm/mach-sa1100/irq.c
+++ b/arch/arm/mach-sa1100/irq.c
@@ -20,6 +20,7 @@
#include <mach/hardware.h>
#include <mach/irqs.h>
#include <asm/mach/irq.h>
+#include <asm/exception.h>
#include "generic.h"
@@ -291,6 +292,23 @@ static int __init sa1100irq_init_devicefs(void)
device_initcall(sa1100irq_init_devicefs);
+static asmlinkage void __exception_irq_entry
+sa1100_handle_irq(struct pt_regs *regs)
+{
+ uint32_t icip, icmr, mask;
+
+ do {
+ icip = (ICIP);
+ icmr = (ICMR);
+ mask = icip & icmr;
+
+ if (mask == 0)
+ break;
+
+ handle_IRQ(fls(mask) - 1, regs);
+ } while (1);
+}
+
void __init sa1100_init_irq(void)
{
unsigned int irq;
@@ -338,5 +356,7 @@ void __init sa1100_init_irq(void)
irq_set_chip(IRQ_GPIO11_27, &sa1100_normal_chip);
irq_set_chained_handler(IRQ_GPIO11_27, sa1100_high_gpio_handler);
+ set_handle_irq(sa1100_handle_irq);
+
sa1100_init_gpio();
}
--
1.8.5.1
next prev parent reply other threads:[~2013-12-15 4:28 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-15 4:28 [PATCH v3 00/10] ARM: sa1100: improve irq handling Dmitry Eremin-Solenikov
2013-12-15 4:28 ` Dmitry Eremin-Solenikov [this message]
2013-12-15 4:28 ` [PATCH v3 02/10] ARM: sa1100: drop entry-macro.S Dmitry Eremin-Solenikov
2013-12-15 4:28 ` [PATCH v3 03/10] ARM: sa1100: add platform functions to handle PWER settings Dmitry Eremin-Solenikov
2013-12-15 4:28 ` [PATCH v3 04/10] arm: sa1100: use new functions that hide PWER access Dmitry Eremin-Solenikov
2013-12-15 4:28 ` [PATCH v3 05/10] arm: sa1100: use ioremap'ped access instead of direct register access Dmitry Eremin-Solenikov
2013-12-15 4:28 ` [PATCH v3 06/10] ARM: sa1100: enable IRQ domains Dmitry Eremin-Solenikov
2013-12-15 4:28 ` [PATCH v3 07/10] arm: sa1100: introduce irqdomains support Dmitry Eremin-Solenikov
2013-12-15 4:28 ` [PATCH v3 08/10] arm: sa1100: merge IRQ 11 to "normal" irq domain Dmitry Eremin-Solenikov
2013-12-15 4:28 ` [PATCH v3 09/10] arm: sa1100: switch to hwirq usage Dmitry Eremin-Solenikov
2013-12-15 4:28 ` [PATCH v3 10/10] ARM: locomo: don't clobber chip data for chained irq Dmitry Eremin-Solenikov
2013-12-20 9:25 ` [PATCH v3 00/10] ARM: sa1100: improve irq handling Linus Walleij
2013-12-20 11:15 ` Dmitry Eremin-Solenikov
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