diff options
| author | Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> | 2014-11-28 15:55:16 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2014-12-03 17:07:30 +0100 |
| commit | affcab32e2f1d5aae331198b3db3ea70b8e49639 (patch) | |
| tree | 6907e164668a1680afe9a406aa30043eef79174e /arch | |
| parent | Linux 3.18-rc1 (diff) | |
| download | linux-affcab32e2f1d5aae331198b3db3ea70b8e49639.tar.xz linux-affcab32e2f1d5aae331198b3db3ea70b8e49639.zip | |
ARM: 8227/1: sa1100: switch to MULTI_IRQ_HANDLER
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. Also install this irq handler from sa1100_init_irq().
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm/mach-sa1100/irq.c | 20 |
2 files changed, 21 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 89c4b5ccc68d..2f3f1320c450 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -703,6 +703,7 @@ 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 2124f1fc2fbe..4a1bd5ebee1c 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(ffs(mask) - 1 + IRQ_GPIO0, 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(); } |